Showing papers on "Bellows published in 2014"

Low Vibration Cryocooled System for Low Temperature Microscopy and Spectroscopy Applications

Abstract: A vertical support rigidly mounted to a planar base positions and supports a cryocooler expander unit off axis and away from a sample to be examined. The sample support is likewise rigidly mounted to the planar base with a rigidly mounted sample housing therein. The cryocooler expander unit is suspended in the vertical support by spring dampening bearings. A pair of opposing flexible vacuum bellows connects the cryocooler expander unit to the sample housing and vertical support. This configuration isolates the sample from vibration. Flexible thermal links associated with a predictive electronic closed loop control sequence maintains sample temperature.

Research of the Elastic Properties of Bellows Made in SLS Technology

Abstract: The article contains the result of studies on the effects of selected geometrical parameters of elastic bellows on their elastic properties. Bellows models were produced with using additive technology, selective laser sintering SLS, where the material used to build models was polyamide PA 2200. Based on the measurements of elastic deformation coefficients of each models bellows were determined. Comparing the results of the measurements there was found a significant effect of the thickness, number of corrugations and their length on the value of the coefficient of elasticity.

Apparatus and method for dispensing a fluid

Abstract: A fluid transfer assembly comprises a housing for accommodating a fluid A bellows member disposed in the housing defines an opening therethrough adapted to be in fluid communication with an applicator assembly The bellows member is adapted to operatively engage the applicator assembly for extension in a first direction and contraction in a second direction The bellows member seals against the inner surface of the housing during extension and contraction for defining a variable volume chamber with the housing Expansion of the bellows member in the first direction reduces the chamber volume for generating positive pressure in the housing and forcing fluid through a valve to the applicator assembly Contraction of the bellows member in the second direction increases the chamber volume for generating negative pressure within the housing for drawing fluid into the chamber

A compact bellows-driven diamond anvil cell for high-pressure, low-temperature magnetic measurements

Abstract: We present the design of an efficient bellows-controlled diamond anvil cell that is optimized for use inside the bores of high-field superconducting magnets in helium-3 cryostats, dilution refrigerators, and commercial physical property measurement systems. Design of this non-magnetic pressure cell focuses on in situ pressure tuning and measurement by means of a helium-filled bellows actuator and fiber-coupled ruby fluorescence spectroscopy, respectively. We demonstrate the utility of this pressure cell with ac susceptibility measurements of superconducting, ferromagnetic, and antiferromagnetic phase transitions to pressures exceeding 8 GPa. This cell provides an opportunity to probe charge and magnetic order continuously and with high resolution in the three-dimensional Magnetic Field–Pressure–Temperature parameter space.

Filter element and air filter

Abstract: A filter element has a filter bellows and at least one support element arranged on the filter bellows that supports the filter element relative to a filter housing in which the filter element is to be arranged The at least one support element is arranged on at least one edge of the filter bellows and projects outwardly past the filter bellows The at least one support element is detachably or non-detachably attached on the filter bellows directly or indirectly The at least one support element is preferably arranged on a corner of the filter bellows and projects past all sides of the filter bellows adjoining the corner An air filter with a filter housing is furnished with the filter element

Film Formation Device

Abstract: A film formation device includes: a processing vessel; a mounting stand installed within the processing vessel and configured to mount a substrate thereon; an elevating shaft installed so as to extend in an up-down direction while supporting the mounting stand and connected to an external elevator mechanism through a through-hole formed in the processing vessel; a bellows installed between the processing vessel and the elevator mechanism and configured to cover a periphery of the elevating shaft at a lateral side of the elevating shaft; a lid member disposed so as to surround the elevating shaft with a gap left between a lateral circumferential surface of the elevating shaft and the lid member; and a purge gas supply part configured to supply a purge gas into the bellows so that a gas flow from the bellows toward the processing vessel through the gap is formed.

A mechanical seal

Abstract: A seal (1) which is designed to be inserted between a rotating shaft (2) and a fixed housing (3) having an opening (6), through which the shaft (2) is introduced, in particular for a engine coolant circulation pump and which comprises: a collar (31) which is designed to the shaft (2) to fit; a first sealing ring (8) which is secured to the collar (31); a pot (10) which is configured to fit in said opening (6); and a second sealing ring (9), which by means of a bellows (24) of elastomeric material with said pot (10); wherein said first and second sealing rings (8, 9) cooperate with each other under the elastic means (33) which are arranged between the pot (10) and the second sealing ring (9), axial force exerted frontally; and wherein said gasket being characterized in that said bellows (10) to said cup (10) in an angularly free manner is connected.

Air suspension device mounted in vehicles e.g. road or rail vehicles, has air spring cover that is air-tightly fixed on air spring bellows as hybrid cap, respectively at upper portion and lower portion of vehicle chassis

Abstract: The device has an air spring cover that is fixed to the vehicle chassis (1). An air spring bellows (2) made of elastomeric material is connected to the air spring cover. A working chamber (5) is filled with compressed air. A rolling fold is formed in the air spring bellows and/or rolled on the air spring cover. The air spring cover is air-tightly fixed on the air spring bellows as a hybrid cap, respectively at the upper portion (3) made of aluminum and the lower portion (4) made of steel of the vehicle chassis.

Filter Device, Especially an Air Filter

Abstract: A filter device comprises a filter element that is comprised of at least two radially nested filter bellows, wherein at least one filter bellows is to be flown through in the radial direction and a flow space for the fluid is formed between the filter bellows. Each filter bellows is embodied as a star-shaped filter with filter folds arranged in a star shape. On at least one end face of the filter element a sealing ring is arranged between a filter bellows and the filter housing.

Joint movement device

Abstract: When air is forced out from bellows (211-213) of a finger joint movement part (110j)(j=1, …, 5) by an adjustment part (180), the air pressure in the bellows falls. When the air pressure falls in this manner, the bellows contract while the angle of intersection expands between the direction faced by one end of the bellows and the direction faced by the other end. As a result, the first to third joints are in a state of joint extension. When air is forcefully supplied to the bellows (211-213) by the adjustment part (180), the air pressure inside the bellows rises. When the air pressure rises in this manner, annular grooves of the bellows, which are equivalent to the bent sides of the joint, are restrained by a restraining member in the bellows, and the bellows therefore expand into a substantially arcuate shape while the angle of intersection narrows between the direction faced by one end of the bellows and the direction faced by the other end. As a result, the first to third joints are in a state of joint bending. Therefore, joint movement can be performed appropriately.

Current-assisted titanium alloy bellows hot-forming tool and method

Abstract: The invention relates to a current-assisted titanium alloy bellows hot-forming die and method, relates to a bellows hot-forming tool and method and solves the technical problem that integral heating in the plastic hot-forming process causes heat loss. The tool comprises an argon cylinder, a gas pipe, an axial loading shaft, an axial loading device fixing plate, a gas cylinder, an axial loading sleeve, a sleeve support plate, a bench, a positioning plate, positioning nuts, positioning studs, a sealing device, an electrifying device, a metal die frame, and a ceramic die. The method includes: keeping the temperature of 600-900 DEG C and inner air pressure 0.1-0.5MPa of a pipe billet for 100-250s, assembling the die, keeping the inner air pressure 2.0-3.0MPa of the pipe billet for 200-400s, powering off, relieving air pressure, and cooling to obtain a titanium alloy bellows. The die and method belonging to the field of bellows production have the advantages that heat loss consumed for the die during integral heating in the traditional plastic hot-forming process is avoided.

Analysis Device, Analysis Method, and Program

Abstract: Arithmetic processing is used to construct an image depicting the geometry of a wire harness (20) that comprises a partially corrugated tube (23) and an electrical wire (21) located inside said partially corrugated tube (23), said partially corrugated tube (23) comprising hollow tubular sections (23a) and bellows sections (23b) joined together. Each bellows section (23b) has the following: side walls that comprise a series of alternating mountain folds and valley folds; and a hollow interior bounded by said side walls.

Sensor for detecting pressure waves in a liquid

Abstract: An optical pressure sensor device (1) comprises: - a chamber (2) filled with pressure transfer medium and having at least one window (4) transparent to pressure waves; - an optical fibre (7) with a Fibre Bragg Grating (8); - a first pressure-sensitive mounting assembly (100) arranged within the chamber, holding the optical fibre; - a second pressure-sensitive mounting assembly (200) arranged within the chamber, holding the optical fibre. - The first pressure-sensitive mounting assembly, the second pressure- sensitive mounting assembly, and a static pressure compensation assembly (300) comprise pairs of bellows arranged on opposite sides of the fibre (7). - The bellows (310, 320) of the static pressure compensation assembly have their interior in fluid communication with the pressure transfer medium in the chamber via a choke channel (314, 324), and have very low static stiffness.

Air levitation vehicle

Abstract: The invention discloses an air levitation vehicle, which consists of an elevated expressway and a levitation vehicle, wherein the elevated expressway consists of a strip-shaped top plate, left and right cantilever beams connected with the left and right edges of the strip-shaped top plate, power supply contact lines below the left and right cantilever beams, a transverse beam for fixing the cantilever beams, and left and right brackets for supporting the transverse beam; the levitation vehicle consists of an air bellows, a draught fan, driving equipment, interior power supply equipment, an operating and controlling device and a carriage; the air bellows is a rectangular box which is open on the upper side and consists of four side walls and one bottom plate; the upper opening is buckled in the lower surface of the top plate of the elevated expressway; the bottom plate of the air bellows is used for pulling the carriage below for carrying passengers up through connecting rods; pantographs are arranged symmetrically outside the left side wall and the right side wall of the air bellows, and are connected with the contact lines and the interior power supply equipment. The air levitation vehicle has the advantages of low manufacturing cost, low noise, low energy consumption, low pollution, high speed, high stability, safety and comfort, and is suitable for interurban railways and urban railways as well as enterprises, communities and fairgrounds.

Protection device for blind string

Abstract: Disclosed is a protection device for a blind string. The protection device includes a bellows tube provided in a tubular structure, allowing the blind string to pass through an inner part thereof, and having a length increased or reduced in a longitudinal direction of the blind string, a first module coupled with a lower end portion of the bellows tube and having an inner part to which an end portion of the blind string is locked, and a second module decoupled from the first module at an upper portion of the first module while the bellows tube is interposed between the first module and the second module, such that the bellows tube is folded. The bellows tube has a difference in the thickness of the skin thereof such that the bellows tube is automatically spread due to elasticity thereof when the second module is moved up from the first module.

Direct burial inside and outside pressure automatic alarming bellow expansion joint

Abstract: The invention discloses a direct burial inside and outside pressure automatic alarming bellow expansion joint which comprises a shell, a bellows, an end pipe and an extension tube. The direct burial inside and outside pressure automatic alarming bellow expansion joint is characterized in that the bellows is formed by connecting a working bellows and a partition bellows in series, wherein the working bellows and the partition bellows are equal in parameter. An opposite end is provided with a connection pipe, an alarm pipe is arranged on the connection pipe and the outer end of the alarm pipe is connected with a valve, a pressure gauge and a sensor, wherein the valve, the pressure gauge and the sensor are used in cooperation with a system. The expansion joint is applied to a city heat power pipe network, is capable of achieving on-site monitoring and remote monitoring alarming and convenient to maintain, prolongs the service life, greatly reduces operation cost, improves economic benefits and facilitates protection of the environment.

Bellows seal electromagnetic valve

Abstract: A bellows seal electromagnetic valve comprises a valve body assembly, a valve clack assembly, a bellows assembly, a valve cover assembly, an electromagnet and a support A valve body is provided with a medium inlet and a medium outlet, the valve clack assembly and the bellows assembly are arranged in a valve body upper cavity after being assembled, the valve body upper cavity is pressed through a valve cover and sealed through a seal gasket, and a closed cavity is formed between the valve body and the bellows assembly so that it can be ensured that corrosive media are prevented from making contact with a valve rod and an armature A valve cover upper end hole is filled with V type packing, so that it is ensured that the media can not leak out after a bellows is damaged An outer shell formed by combining austenitic stainless steel with permeability alloy is arranged outside the electromagnet, a coil assembly is arranged inside the outer shell and pressed through a concentrating flux plate and a pressing sleeve, the upper portion of the outer shell is pressed through a coil shell cover and sealed through an O-shaped ring, and a lead of a coil is led out through a cable leading-out device The support is used for connecting the electromagnet with the valve cover The bellows seal electromagnetic valve can be used for controlling the high-temperature, corrosive, poisonous and harmful media, and can meet the requirements of nuclear chemical engineering and the requirements of nuclear waste processing systems

Estimation of parasitic losses in a proposed mesoscale resonant engine: Experiment and model

Abstract: A resonant engine in which the piston-cylinder assembly is replaced by a flexible cavity is realized at the mesoscale using flexible metal bellows to demonstrate the feasibility of the concept. A four stroke motoring technique is developed and measurements are performed to determine parasitic losses. A non-linear lumped parameter model is developed to evaluate the engine performance. Experimentally, the heat transfer and friction effects are separated by varying the engine speed and operating frequency. The engine energy flow diagram showing the energy distribution among various parasitic elements reveals that the friction loss in the bellows is smaller than the sliding friction loss in a typical piston-cylinder assembly.

The optimal design of bellows using a novel discrete particle swarm optimisation algorithm

Abstract: This paper describes a successful adaptation of a discrete particle swarm optimisation DPSO to optimal design of bellows. EJMA standard and engineering practices-based mathematical model of unreinforced U-shaped bellows are established. An n-DPSO and scheme of constraint levels with huge value penalty are proposed to reproduce new particles and keep the best particles. Through benchmark problems, the obtained optimal results demonstrate that the approach clearly outperforms those from literatures. The bellows with diameters of 100 mm to 1,500 mm at 0.6 MPa to 1.6 MPa are designed by the approach and established mathematical model, the optimal solutions show that they are much better than those of bellows in-service and highly close to theoretical solutions. It is concluded that the established mathematical models are reasonable and the approach can be adopted in bellow design as it yields rational, reliable, time-saving and economically practical designs.

Device for orientation of solar energy receiver

Abstract: FIELD: power engineering.SUBSTANCE: device for orientation of a solar energy receiver comprises a mechanism of orientation by zenith and a mechanism of orientation by azimuth, comprising a reservoir with a working liquid, according to the solution the reservoir is made as cylindrical and is equipped with an azimuthal guide block, representing at least one helical slot, made on the inner surface of the reservoir, the mechanism of orientation by azimuth comprises a shaft with splints, arranged along the axis of symmetry of the reservoir, a float fixed on the slot as capable of movement along splints, a bellows with permanent difference of levels of inlet and outlet holes, fixed on the float, at the same time the inlet hole is submerged into a working fluid, and the outlet hole is removed outside the limits of the reservoir, on the side surface of the float there is at least one cross beam of the azimuthal guide block fixed with a roller at the end, arranged in the helical slot of the reservoir; the device additionally comprises a mechanism of orientation by zenith, comprises a stem kinematically connected with the shaft, a pusher made as capable of reciprocal movement, at the same time the ends of the stem and the pusher are connected hingedly with a receiver of solar energy.EFFECT: increased reliability of a device due to simplified design and accuracy of orientation of a solar collector to the Sun due to usage of a bellows clock mechanism providing for smooth even rotation.2 cl, 8 dwg

Solar drying system collecting, storing and supplying heat

Abstract: Disclosed is a solar drying system collecting, storing and supplying heat. The solar drying system comprises a solar greenhouse, a solar energy storage stand, an air condenser, a wet dust collector, pipelines, valves and fans. The solar greenhouse, the solar energy storage stand, the air condenser and the wet dust collector are connected through the pipelines. The building structure of the solar greenhouse is a frame structure. A floor of the solar greenhouse is a concrete perforated plate. The solar energy storage stand comprises an upper bellows, a lower bellows, a plurality of solar heat collecting and storing pipes and a sealing chamber. The air condenser is in a cylinder structure. An air inlet and an air outlet are formed in the side of the cylinder. Air boxes are arranged at an upper cylinder opening and a lower cylinder opening and communicated through an air tube. The other air inlet is formed under the floor of the solar greenhouse. Another two air outlets are formed upon the floor. The air inlet and one air outlet of the solar greenhouse, the upper air box of the solar energy storage stand and the upper air box and the air outlet of the air condenser are all communicated through the pipelines. The lower air box of the air condenser is connected with the wet dust collector.

Bellows hot plastic coating processing technology

Abstract: The invention relates to the technical field of a pipeline anti-corrosive technique, in particular to a bellows hot plastic coating processing technology. The bellows hot plastic coating processing technology comprises the steps of acid pickling rust removing, base material preheating, plasticizer preparing, plastic coating, solidifying, cooling and the like. According to the bellows hot plastic coating processing technology, the inner surface and the outer surface of a bellows respectively form a plastic anti-corrosive layer in a plastic coating mode, the soil erosion resistant performance is the strongest, the thickness of a hot plastic coating layer can be more than 0.35 mm, attaching force between the hot plastic coating layer and a substrate is very strong, and the attaching force will not be reduced during long-time use. The bellows hot plastic coating processing technology has the advantages that mechanical strength is high, pressure bearing ability is high, insulating ability of electric appliances is high, hardness of the outer surface is high, the outer surface is smooth, the friction coefficient is small, the water absorption is low, and a use temperature range is large.

Maintenance-free directly buried two-way external pressure bellows compensator

Abstract: The invention discloses a maintenance-free directly buried two-way internal pressure bellows compensator, which comprises adapters, reinforcing rings, bellows, an intermediate connector, a flow guide pipe, an outer pipe, a protective pipe, thermal insulation material and short pipes. The ends of the adapters, which are provided with flanges, are inwardly fitted in the hole of the outer pipe, and the flanges are provided with seal rings which are matched with the outer pipe to form a shaft seal structure. Both ends of each of the symmetrically arranged bellows are respectively coaxially and tightly connected with the intermediate connector and one of the adapters, and the flow guide pipe is connected with the two inner pipes to form a two-way internal pressure compensation structure. The protective pipe is sleeved on the outer pipe, the thermal insulation material is filled in the gap between the outer pipe and the protective pipe, in addition, the short pipes are coaxially connected with the outward end surfaces of the flanges of the adapters, the thermal insulation material is filled between the fitted sections of the short pipes and the adapters as well, and the thermal insulation materials at the two positions are formed into an overall outer thermal insulation structure. Retainer rings are fixedly connected with the orifices of both ends of the outer pipe to form an axial anti-separation structure for the outer pipe. After being buried underground along with a pipeline network, the maintenance-free directly buried two-way internal pressure bellows compensator can achieve the purposes of stable thermal insulation structure position, reliable shaft seal, flexible compensation, no leakage and easiness in realizing maintenance-freeness within the lifetime.

Flexible conduit assembly

Abstract: A flexible conduit assembly for transmitting exhaust from a combustion engine to an atmosphere includes first and second conduits and a coupler for coupling the first and second conduits. The coupler includes a bellows, a flexible intermediate element surrounding the bellows, first and second flanges disposed over the intermediate element, and an outer insulating element surrounding the intermediate element and supported by the flanges. The coupler further includes first and second extensions coupled to the intermediate element and projecting outwardly from the intermediate element. The first extension spaces the first flange from the intermediate element to define a first air gap, and the second extension spaces the second flange from the intermediate element to define a second air gap. The first and second flanges dispose a portion of the outer element above the intermediate element to define a third air gap.

Fluid expansion chamber with protected bellow

Abstract: An electric submersible pumping system includes a motor filled with motor lubricant, a pump driven by the motor, and a fluid expansion chamber connected to the motor. The fluid expansion chamber includes a seal bag filled with a seal bag lubricant and a bellows contained within the seal bag. The bellows includes an interior in fluid communication with the motor and an exterior in fluid communication with the seal bag lubricant.

Cabin air pneumatic spring valve unit and electropneumatic compressed air system

Abstract: The invention relates to a cabin air suspension valve unit (4). While such cabin air suspension valve units are equipped in accordance with the prior art by a mechanical level control, the invention proposes that the cabin air suspension valve unit (4) by electrically controlled solenoid valves (17, 25a, 25b, 48) has that of a control unit (5) are driven, and the ventilation of the air suspension bellows (7, 9, 11, 12) carry, on which is a driver's cab supported. Optionally via the cabin air suspension valve unit (4) by means of a further solenoid valve (49) carried out the ventilation of an air spring (42) of a driver's seat (43). The invention can be used for driver's cabs of commercial vehicles.