34results about How to "Solve sealing difficulties" patented technology

The invention discloses an experimental device for gas permeation under complex conditions. The experimental device is characterized by comprising a sealing loading box, a permeation test piece, a loading device, an oil pressure sealing system, a gas supplying system and a gas balancing system, wherein the loading device is used for loading the permeation test piece to enable the permeation test piece to be in a predetermined stress state; under the assistance of the oil pressure sealing system, a first pressure chamber comprises a rectangular frame, force transmission columns, side baffle plates and the outer side surface of the permeation test piece, and a second pressure chamber comprises the side baffle plates and the inner side surface of the permeation test piece; under the effect of gas pressure difference, gas in the first pressure chamber gradually permeates into the second pressure chamber, so that the permeation law of the gas around holes can be researched. The experimental device can be used for enabling coal and rock masses to be in a stress state similar to field conditions, and the influence of the breaking situations of the coal and rock masses around the holes in the permeation law can be considered, so that the experimental device has great significance on the research on the permeation, absorption and resolution law of the gas in the coal and rock masses around roadways under the complex conditions.

The invention discloses a driving motor liquid cooling device and a manufacturing method thereof, and the driving motor. The driving motor liquid cooling device comprises a motor shell part. The motor shell part comprises a hollow cavity which is formed by a circumference wall. The circumference wall of the motor shell part possesses a cooling liquid channel formed through lost pattern casting. The cooling liquid channel possesses a bending portion. The manufacturing method comprises the following steps that integral casting molding of the motor shell is performed; a cooling liquid channel shape entity model is removed from the motor shell after casting molding; the cooling liquid channel and at least two holes which are connected with the cooling liquid channel are integrally formed in the motor shell. Because of a one-piece cooling structure, problems that existing internal and external water jacket assembling is complex and sealing is difficult to be achieved can be solved; cost is reduced and production efficiency is increased.

The invention provides a concrete impermeability test method and a test apparatus thereof. The test method comprises the following steps: fixedly connecting one end of a pre-embedded pressure leading tube with a concrete sample through pouring, connecting the other end of the pre-embedded pressure leading tube with a water tube, allowing pressure water to go through the pre-embedded pressure leading tube and to enter test concrete, and determining the water pressure of the water tube, which is the test pressure, when water infiltrates from the periphery of the concrete sample. The invention also relates to the concrete impermeability test apparatus. The method and the apparatus are adopted to carry out concrete sample impermeability test without sealing the sample, so the problem of difficult sealing between the sample and a frame test mold in the concrete sample impermeability test process is solved, the success rate of impermeability tests is improved, the operating flow is simplified, the test time is shortened, the water seepage path is visually reflected, and the practicality of an impermeability tester in engineering is improved.

The invention discloses a rock core holder for a mud dynamic pollution experiment. The holder comprises a sleeve, first and second plugs and a membrane, the first and second plugs are detachably connected to the two ends of the sleeve respectively, the membrane is arranged in the sleeve and forms a cylindrical structure coaxial with the sleeve, a hollow area formed by the membrane in a surroundingmode is a rock core clamping area, a confining pressure area is arranged between the outer wall of the membrane and the inner wall of the sleeve, and a pressurizing opening communicated with the confining pressure area is formed in the surface of the sleeve. The provided rock core holder for the mud dynamic pollution experiment can solve the problems that simulation of the mud dynamic pollution experiment has a large error and limited in accuracy, the special-purposed rock core holder is realized for the mud dynamic pollution experiment, and objective parameters in the experiment process aresimulated more accurately.

The invention aims to provide a tower-type cyclone flow test device for converting axial compression into radial sealing. The device comprises a pressure stabilizing cylinder, a convex-concave cover plate and a cross-shaped pressing plate, the pressure stabilizing cylinder and the convex-concave cover plate are fixed together through a fastener, the convex-concave cover plate adopts a convex stepon the inner cavity surface, and adopts a stepped design on the outer cavity surface. A center hole is formed in the center of the convex-concave cover plate, a conical-column-shaped rubber plug and atower-type cyclone are arranged in the center hole, the axial position of the tower-type cyclone is fixed through a small flat end face of a step, the convex step and the edge of the center hole adopt an air inlet angle in smooth transition, a cross pressing plate is fixed to the convex-concave cover plate, and a hole is formed in the middle of the cross pressing plate. And the middle part of thetower-type cyclone is arranged in a hole in the middle part of the cross pressing plate. An O-shaped ring is compact and reliable in sealing in the formed triangular annular belt space, axial pressing is converted into radial sealing, and the problem that a flow test is difficult to seal due to the fact that the unnecessary axial installation end face of a current tower type cyclone becomes smaller and smaller is effectively solved.

The invention relates to an electromotor combined with a pressure vessel. The electromotor comprises an electromotor shell, a rotating shaft, a stator, a rotor, a shaft extension end cover, a non-shaft extension end cover, a terminal box, a terminal box cover, a terminal board and electric connection components, wherein the terminal board and the electric connection components are arranged in the terminal box, and connection components are arranged at the two ends of the electromotor shell. The electromotor is characterized in that a bearing hole in the non-extension shaft end cover does not penetrate through the outer end face, a shaft sleeve is fixed to the outer end face of the shaft extension end cover in a sealed mode, a flange is fixed to the other end of the shaft sleeve in a sealed mode, the shaft extension end of the rotating shaft penetrates through the shaft extension end cover and the shaft sleeve and extends out of the flange, sealing elements are arranged between the connection components of the shaft extension end cover, the non-shaft extension end cover and the electromotor shell, and a sealing element is arranged between the terminal board and the terminal box. The rotating shaft of the electromotor is used as the rotating shaft of a stirrer of the pressure vessel, the pressure in the pressure vessel shifts into the electromotor through the shaft sleeve, and the problem that the pressure vessel is difficult to seal is well solved through the good sealing performance of the electromotor shell and all the components. The electromotor is suitable for high-pressure operation environments.

The invention provides a single-stage gravity pump organic Rankine power generation and heat supply combined system and a cycle of the combined system, wherein the combined system comprises a circulation power generation closed loop formed by sequentially connecting an evaporator, an expansion machine and a condenser, the expansion machine is externally connected with a power generator, the condenser comprises an organic working medium pipeline and a circulation water pipeline, low-boiling-point organic working media release heat to circulation water in the condenser, the circulation water pipeline is connected with a floor heating pipeline through a regulating valve, the floor heating pipeline is then connected with the circulation water pipeline through a circulation water pump, and a floor heating closed loop is formed; the circulation power generation closed loop and the floor heating closed loop form the combined system. The pressure difference of the organic working media is utilized for replacing working medium conveying equipment of a working medium pump, the heat energy is directly converted into the pressure difference required by the circulation, and the working medium pressurization and the application of the conveying equipment are avoided.

The device discloses an experiment device for gas permeation around a round hole. The experiment device is characterized by comprising a sealing load box, a permeation specimen, an oil pressure sealing system, a gas supply system and a gas balance system. On the basis that a permeation rule of coal and rock mass around the round hole can be considered to be axisymmetric, the device takes one part for an experiment so as to reflect the overall permeation property of surrounding rocks. Relative to a whole-section experiment device, the device can carry out a large-scale experimental study. The device enables the specimen to be in a stress state similar to that under site conditions through simple loading and can consider the influence of breaking conditions of the coal and rock mass around the round hole to the permeation rule. The device has the characteristics of simple structure and low experiment cost. The device has important meaning for studying gas permeation, adsorption and analysis rules in the coal and rock mass under the particular stress condition around the round hole.

The invention provides a metal flat tube supporting body, a battery/electrolytic cell and a battery stack structure. The metal flat pipe supporting body structure comprises a closed end, a porous structure, a fuel gas flow channel and an open end. The closed end and the open end are respectively positioned at two ends of the porous structure; the fuel gas flow channel is arranged in the porous structure and is used for circulating fuel gas; the closed end is of a compact structure and is used for sealing the first end of the fuel gas flow channel. According to the structure provided by the invention, the closed end and the open end are in contact with the electrolyte layer, so the purpose of self-sealing is achieved, and the sealing problem existing in the metal-supported solid oxide fuelcell is effectively solved.

The invention relates to a multiple-blade closed air valve which comprises a square valve body, a plurality of blades and sealing rings, wherein rows of openings are formed in sequence in the square valve body, and the end part of each opening is arc-shaped; the blades are correspondingly arranged in the openings through first fixing components, and the end parts of all the blades are arranged to be arc-shaped, and are matched with the openings; and the sealing rings are arranged on the outer sides of the blades through second fixing components in a surrounding manner, and are in contact with the inner wall of the square valve body. The multiple-blade closed air valve provided by the invention can effectively solve the problem of leakage hazards between the blades, between the blades and the square valve body, and at the right-angle end parts of the blades, and has a good sealing effect.

The invention provides a bamboo joint tube type solid oxide fuel cell/electrolytic cell with one self-sealed end and a preparation method of a cell/electrolytic cell stack thereof, and the preparation method comprises the following steps: taking ceramic powder with different properties in a hydrogen environment as a raw material for preparing a support body to obtain a tubular metal ceramic support body blank with a closed end; and then preparing an insulating layer on the surface of the annular tube wall of the support body blank, and preparing a plurality of single batteries connected in series on the surface of the insulating layer, so that a plurality of single battery structures are prepared on the surface of the metal ceramic circular tube-shaped support body. By adopting the screen printing technology, the film forming speed of a plurality of single cell series structures on the support body is effectively improved, the preparation efficiency is effectively improved, the preparation method is simplified, the preparation cost is saved, and commercialized popularization of the solid oxide fuel cell is facilitated.

The invention belongs to the technical field of stirring, and particularly relates to a self-excited oscillation annular jet stirring system. The problem that the traditional stirring equipment is difficult to seal due to a motor shaft is solved. The stirring system comprises a stirring kettle shell, an oscillation jet annular stirring device, a medium inlet, a supernatant outlet, a jet liquid pipeline, a diaphragm pressure pump and a medium outlet, wherein the oscillation jet annular stirring device is arranged in the stirring kettle shell, the medium inlet is formed in the top of the stirring kettle shell, the supernatant outlet is formed in one side of the upper part of the stirring kettle shell, the medium outlet is formed in the lower part of the stirring kettle shell, and the supernatant outlet is connected to an inlet of the oscillation jet annular stirring device through the diaphragm pressure pump andthe jet liquid pipeline. According to the self-excited oscillation annular jet flow stirring device, no paddle or blade is used, strong shear flow cannot be generated, and flora and molecular structures of related organic solutions cannot be damaged.

The invention relates to a sealing system of a radiation chamber furnace tube of a tube-type heating furnace, and belongs to the technical field of tube-type heating furnace sealing. The sealing system comprises a furnace top sliding plate arranged around the furnace tube, wherein the furnace top sliding plate is used for slip connection with a furnace top; a sealing element surrounding the furnace tube is arranged on the furnace top sliding plate; a heat preservation sleeve is arranged above the sealing element around the furnace tube; a sealing box is arranged outside the sealing element andthe heat preservation sleeve; the heat preservation sleeve extends out from the sealing box; the sealing element comprises a sealing base; the bottom of the sealing base is connected to the furnace top sliding plate; a taper hole is formed in the sealing base in a longitudinal direction and penetrates the sealing base; a taper sealing element is arranged in the taper hole and is matched with thetaper hole; the upper end of the taper hole has a big opening; the taper sealing element is set as split type taper sealing elements arranged around the furnace tube; the split type sealing elements are not fixedly connected to each other; a pressure plate is arranged above the sealing base; and the heat preservation sleeve is arranged above the pressure plate. The radiation chamber furnace tube sealing system has a simple structure and a good sealing effect.

The invention discloses a magnetorheological fluid flow mode rheological property testing device. The device comprises a housing and an inner core, an annular gap is formed between the housing and theinner core, an annular piston is arranged in the annular gap, the two ends of the annular piston are in sealed butt joint with the inner wall and the outer wall of the annular gap respectively, a slot is formed in the middle section of the annular piston, the slot and the inner wall and the outer wall of the annular gap jointly define a containing cavity used for containing magnetorheological fluid, and the annular piston can move back and forth in the annular gap under the action of a driving mechanism so as to drive the magnetorheological fluid to move synchronously. The housing or the inner core is provided with a coil winding, the coil winding is connected with an external current source through a wire, the coil winding generates an electromagnetic field after being electrified, and the generated electromagnetic field can radially and uniformly penetrate the whole section of annular gap; and pressure sensors are respectively mounted at the two sensor mounting holes in the outer side of the housing. Compared with the prior art, the magnetorheological fluid flow mode rheological property testing device has the advantages that a rheological property testing scheme under a magnetorheological fluid flowing mode is provided, and the testing accuracy is guaranteed.

The invention discloses a square shell-and-tube heat exchanger. The square shell-and-tube heat exchanger comprises a heat exchanger shell, an upper connector and a lower connector, wherein the upper connector is connected to the top of the heat exchanger shell, the lower connector is connected to the bottom of the heat exchanger shell, the heat exchanger shell is square, the two ends of the heat exchanger shell are open, a left side plate of the shell serves as a tube plate, and the outer side face of the tube plate is connected with a semicircular tube bundle; the semicircular tube bundle comprises a plurality of semicircular tubes which are not communicated with one another; a plurality of rows of U-shaped heat exchange tubes are connected in the shell, two communicating ends of each heat exchange tube are correspondingly communicated with two adjacent rows of tube holes in the tube plate, and the two communicating ends of each heat exchange tube are correspondingly communicated withtwo adjacent semicircular tubes; the semicircular pipes at the top end of the semicircular pipe bundle are communicated with a liquid inlet, and the semicircular pipes at the bottom end are communicated with a liquid outlet; and heat exchange liquid enters the heat exchange pipes through the liquid inlet and flows out of the liquid outlet. According to the square shell-and-tube heat exchanger, the more heat exchange tubes can be connected under the same length, so that the problem that the multi-flow heat exchange tubes are difficult to seal is solved.

The invention relates to the technical field of vacuum coating equipment, and provides a magnet rotating target gun. The gun comprises a target material, a substrate and a magnetic control assembly which are sequentially arranged in a target gun cavity from top to bottom, and the magnetic control assembly comprises an outer ring magnet, a center magnet arranged in the center of the outer ring magnet and a coating layer coating the outer ring magnet and the center magnet. A driving device connected with the magnetic control assembly is additionally arranged, the driving device drives the magnetic control assembly to rotate or reciprocate, the substrate comprises an upper plate and a lower plate, a sealed cooling cavity is formed between the upper plate and the lower plate, and the lower portion of the substrate is connected with the target gun cavity in a sealed mode through a first sealing ring. By means of the technical scheme, the problem that in the prior art, the target material etching utilization rate is low is solved.

The present invention relates to an automatic heating thermostatic device for fuel vehicle, in particular, it relates to a heating thermostatic device for diesel vehicle. Said invention adopts PTC sleeve to heat the whole fuel sucking pipe, and the inside and outside of the heating pipe soaked in the fuel are covered with metal pipe or plastic pipe, and its bottom end is welded and sealed. Said automatic heating thermostatic device is identical to the ordinary fuel sucking pipe in installation, i. e. uses the screw thread to make connection so as to solve the problems of only heating fuel sucking pipe part and difficult in sealing of heating material and electrode. The adoption of said automatic heating thermostatic device can completely melt the condensated diesel oil being in fuel sucking pipe within few minutes.