111results about How to "Check tightness" patented technology

The invention relates to a well cementation cement sheath performance simulation experiment device and an experiment method. The experiment device comprises one set of cement cake circulation device, one set of cement sheath performance detection device and one set of cementing face shearing force experiment device. The experiment method comprises the following steps of: simulating the manufacture process of a well cementation test sample under the practical underground warm-pressing condition; detecting the sealing performance and the corrosion resistance of the cement ring; detecting the sealing performance and the corrosion performance of the cement ring; and detecting cementing face shearing force between a casing pipe test sample and the cement sheath and cementing face shearing force between the cement sheath and a stratum test sample. According to the invention, because the adopted casing pipe test sample has the same size and the material with the casing pipe material applied in the practical well cementation, the adopted stratum test sample is a standard artificial stratum test sample, the porosity-permeability characteristic, the strength characteristic, and the fluid characteristic and the like of the adopted stratum test sample are same with the stratum characteristic in the practical well, the invention can be used for truly simulating the dynamic variation of full-size well cementation, and the simulation condition is accurate. The invention can be widely applied in simulation experiments of various well-cementation dynamic variations.

The invention discloses an air spring testing device which comprises a working table (1), a first cylinder (2) connected with an air source, a tension and pressure sensor (3) and a grating ruler displacement sensor (5). A piston rod of the first cylinder (2) can push a tested air spring to extend and contact, the grating ruler displacement sensor (5) is used for measuring the route of the air spring (4), and a controller (6) and a displayer (7) are arranged on the working table (1). The air spring testing device can perform detection on airtightness, accuracy, service life and force value changing during the route of the air spring.

A device for testing at least one pressure sensor, by applying a pressure signal, the device testing the operativeness of the pressure sensor as a function of the pressure signal. In addition, it is provided that the device tests the tightness of the pressure sensor as a function of the pressure signal.

The invention provides a method and a device for detecting sound leakage and an electronic device. The method comprises the steps of controlling the telephone receiver of the electronic device to playa test signal; starting a recording function of a noise-reducing microphone and controlling a pickup hole in the noise-reducing microphone to enter a preset state; obtaining recording data obtained by the noise-reducing microphone when the pickup hole is in the preset state; and detecting the sound leakage based on the recording data. The method for detecting sound leakage can detect the sealingperformance of the microphone efficiently.

The invention relates to an open hole packer tester. The open hole packer tester comprises a sleeve; two end parts of the sleeve are respectively provided with a borehole gland in sealed connection with the sleeve; a first borehole gland is provided with a first pressurizing nozzle; an open hole packer is arranged in the sleeve; the end part of the open hole packer is provided with an open hole packer gland; a first open hole packer gland and a second open hole packer gland are in sealed connection with the open hole packer and corresponding borehole glands respectively to form a first annulus and a second annulus on the two end parts of the sleeve; the first pressurizing nozzle penetrates through the first borehole gland and is communicated with the first annulus; the second open hole packer gland is provided with a second pressurizing nozzle communicated with the open hole packer; a simulated borehole is arranged between the open hole packer and the sleeve. The sealing property of the open hole packer can be tested on the ground by the open hole packer tester, the cost is low, and the operation is simple.

The invention relates to a method for detecting the sealing performance of LED packing glue. The method comprises the following steps that (1) glue A and glue B are mixed, and then bubble discharging, glue pouring and heating solidification are carried out; (2) a solidified light bead is soaked in red ink to be stewed, then the glue impregnation condition of the red ink is observed under a microscope. The method is high in accuracy, simple to operate, and suitable for detecting the sealing performance of the LED packing glue.

The invention provides a device for detecting the leak tightness of an inner water tank of a vacuum-tube solar water heater, which belongs to the field of heat generation and application. The detecting device comprises a fixed chuck 1, a movable chuck 2 and a compaction device 3, wherein both the fixed chuck 1 and the movable chuck 2 are toroidal components which are fixedly provided with reinforcing ribs; the fixed chuck 1 is arranged on a detection slot 7, and the movable chuck 2 is fixed on an end plate of the detection slot 7; mounting slots 13 are respectively arranged at the same positions of the circumferences of the fixed chuck 1 and the movable chuck 2; and the mounting slot 13 is provided with a screw fastening device 14. The device is simple to operate, can avoid missed detection and interference on detection which is caused by water-inlet pipe joints and water-outlet pipe joints on the water tank, and detect the leak tightness of the inner water tank under the condition of higher pressure.

An apparatus for detecting the sealability of a lithium ion cell comprises a container which is filled with a detecting liquid, a clamp and a high-pressure-gas joint member. The clamp can carry a lithium ion cell to be detected and put it into said container. One end of the high-pressure-gas joint member is connected to an injecting hole of the lithium ion cell to be detected and the other end is connected to a high-pressure gas supply. The detecting apparatus also comprises an elevator which can move the lithium ion cell into and out the detecting liquid within the container.

The invention belongs to the technical field of a detection device, and relates to a sealing property detection device for a submersible pump. A pressure tank body and a guide bar at the outside of the tank body are fixed on a pedestal of a box; a tank cover of the pressure tank is slidingly arranged on the guide bar which is arranged between a top board and the tank body, and can be lifted and dropped driven by a cylinder; the tank body and the tank cover are locked together through an automatic locking device; the lower side of a vertical mounting board fixed on the bottom surface of the tank cover is provided with a supporting plate, a submersible pump positioning clamp and a bulkhead; the bulkhead is driven by the cylinder to move in the lateral direction and is used for blocking an oil chamber detection joint of the submersible pump; the middle part of the tank cover is provided with a bulkhead which is driven by the cylinder to move up and down and is used for blocking a motor chamber detection joint for the submersible pump; and the side wall of the tank cover is provided with a cable slot and a cable sealing locking block. The sealing property detection device for a submersible pump has the advantages of being accurate in the control motion, being high in detection precision, having more detection items, and being suitable for high accuracy detection of the submersible pump.

The invention provides a high temperature and high pressure step-by-step packing and unpacking multi-stage fracturing tubular column and an application method thereof. According to the fracturing tubular column, in the fracturing construction process, controllable packers and sand blasters which correspond to a target construction stage position and are used in a matched mode can be opened when ball fracturing is conducted only once, and the fracturing construction process can be simpler and more convenient; step-by-step packing of a packer at the fracturing construction stage position, non-packing of a packer at the non-construction stage position and step-by-step unpacking of a packer at the constructed stage position can be achieved, sealing performance of the packer at each stage can be effectively checked, times of repeated packing and unpacking of the packers is reduced, sealing efficiency of all the packers of the tubular column is improved, and after fracturing construction is ended, the tubular column is easy to pull out.

The invention relates to a portable protective airtight door air-tightness detection device which includes a gas source, pressure measuring equipment, a portable console, and a portable hyper-pressure chamber. The portable hyper-pressure chamber includes a sealing plate and sealing pipes at the two ends of the sealing plate. When the gas source supplies gas to the sealing pipes under control of the portable console, the sealing pipes expand and push against the sealing plate and a frame of a detected airtight door. A hyper-pressure chamber is formed by the sealing plate, the detected airtight door and the frame of the detected airtight door. The pressure measuring equipment tests the pressure change when gas is injected into the hyper-pressure chamber at a certain speed. With the device adopted, the detection efficiency of air-tightness of protective airtight doors (including airtight doors) in workshops is improved greatly, and the problem that it is impossible to detect the air-tightness of a single-frame protective airtight door on a project site at present in our country is solved. The detection device can be widely used in independent and rapid detection of air-tightness of protective equipment.

The embodiment of the invention discloses an air conditioner detecting device and relates to the technical field of electronic engineering. The problem that a large noise is generated when nitrogen is discharged out of an air conditioning pipe can be solved. The air conditioner detecting device includes an inflatable branch, at least one air conditioner branch, an exhaust branch and a control module; the inflatable branch, the at least one air conditioner branch and the exhaust branch are all connected with the control module; the at least one air conditioner branch is connected with an air conditioner, the inflatable branch includes a nitrogen bottle, and the exhaust branch includes a capillary tube; The control module is used for controlling the inflatable branch to be in the conducting state, controlling the nitrogen bottle to output nitrogen and controlling the exhaust branch to be in a closed state after the at least one air conditioner branch is connected with the air conditioner and for controlling the inflatable branch to be in the closed state and controlling the nitrogen bottle to stop nitrogen outputting after the value of the pressure in the air conditioner is larger than a first pressure value; after the first preset time, the exhaust branch is controlled to be in a conducting state. The air conditioner detecting device is applied in the installation and testing of air conditioners.

The invention discloses a sealing performance testing device and method, and the device comprises a machine platform which is provided with an object placement groove. A sealing upper cover which is used for closing the object placement groove is disposed above the object placement groove. The device also comprises a sealing assembly which is disposed in the object placement groove, and comprises a sealing ring and a drive cylinder in transmission connection with the sealing ring; a positioning assembly which is disposed in the object placement groove, and comprises a support with a stepped surface; a vacuum pumping apparatus which is disposed in the object placement groove and is used for the vacuum pumping of a sealed cavity formed by the object placement groove and the sealing upper cover; and a detection assembly which is disposed in the object placement groove and comprises a first air pressure inductor, wherein the first air pressure inductor is used for detecting the air pressure value of the sealed cavity formed by the object placement groove and the sealing upper cover. According to the invention, the device is simple in structure and is low in cost. The method is high in safety factor, is good in testing efficiency, and is high in testing precision.

The invention discloses a sealing property detecting device and method for a fuel cell membrane electrode. The device comprises a mold assembly, a press fitting system, an air supply system, and a detection system. The mold assembly includes a first mold, a second mold, a first gasket and a second gasket hole. The first mold is provided with a first receiving groove, a first inlet flow channel, and a second inlet flow channel. The second mold is provided with a second receiving groove of a second gas diffusion layer and a first outlet flow channel. The press fitting system is connected with the mold assembly. The air supply system is connected with the first inlet flow channel and the second inlet flow channel; and a first control valve and a second control valve that correspond to the first inlet flow channel and the second inlet flow channel one by one are arranged between the first inlet flow channel and the second inlet flow channel and the air supply system. The detection system is connected with the first outlet channel; and a third control valve is arranged between the first outlet flow channel and the detection system. No polar plate needs to be installed in membrane electrode detection; and the operation time is short. The leakage and blow-by detection of the membrane electrode are carried out simultaneously.

The invention discloses a device for detecting the airtightness of a workpiece, which belongs to the field of airtightness detection. The device comprises a vacuum box, a helium mass spectrometer leakdetector, a first vacuum pump, an air blowing assembly and a helium filling assembly, the vacuum box comprises an upper box cover and a lower box plate, a vacuum cavity is formed between the upper box cover and the lower box plate, an air inlet of the helium mass spectrometer leak detector is communicated with the vacuum cavity, and an air outlet of the helium mass spectrometer leak detector is communicated with an air inlet of the first vacuum pump; the air blowing assembly comprises an air blowing bottle, a first pressure regulating valve and a first electromagnetic valve, the air blowing bottle is communicated with an air inlet of the first pressure regulating valve, an air outlet of the first pressure regulating valve is communicated with an air inlet of the first electromagnetic valve, and an air outlet of the first electromagnetic valve is communicated with the vacuum cavity. According to the device provided by the invention, high-speed flowing gas is blown in through the gas blowing assembly, and the gas has a driving effect on residual helium in the vacuum cavity, so that the residual helium is rapidly cleaned under the vacuumizing effect of the first vacuum pump.

The invention provides an automobile vacuum pump performance detecting method and device, and belongs to the field of automobile performance detecting. According to the detecting method, the detecting device of an automobile vacuum pump is used for comprehensively detecting the vacuum performance, the vacuum sealing performance, the overspeed performance, the high-temperature resisting performance, the low-temperature starting performance, the variable speed durable performance, the vibration durable performance, the noise performance and the corrosion resisting performance of the automobile vacuum pump, whether the performance conforms to the regulation or not is judged according to related parameters, and accordingly the production quality of the automobile vacuum pump is effectively improved. The detecting device is used for achieving the detecting method. The detecting method and device are overall in performance detecting, and all performance of the automobile vacuum pump can be effectively detected.

The invention, which belongs to the field of the hydraulic technology, discloses a sealing detecting tool for double oil pipes. The detecting tool comprises an outer detecting assembly and an inner detecting assembly. The inner detecting assembly includes an inner choke plug and an inner joint; the inner choke plug is in sealing connection with one end of a to-be-detected inner oil pipe; the innerjoint is in sealing connection with the other end of the to-be-detected inner oil pipe; a first joint is arranged at the inner joint and is used for communication with the to-be-detected inner oil pipe. The outer detecting assembly includes an outer choke plug and an outer joint; the outer choke plug sleeves the inner choke plug in a sealing manner and is used for sealing connection with one endof a to-be-detected outer oil pipe; the outer joint sleeving the outer joint is used for sealing connection with the other end of the to-be-detected outer oil pipe; and a second joint is arranged at the outer joint and is used for communication with annular space between the to-be-detected outer oil pipe and the to-be-detected inner oil pipe. Therefore, the sealing detecting tool is used for sealing detection of the double oil pipes.

The invention relates to the technical field of ships and warships, in particular to a flange connecting cabin penetration pipe fitting. The flange connecting cabin penetration pipe fitting comprises a fixing flange, a connecting sleeve, a sleeve, a sealing gasket, a screwing-in flange and insulation cylinders, wherein first connecting holes are formed in the fixing flange; the fixing flange is fixedly connected with one end of the connecting sleeve; a connecting part of the fixing flange and the connecting sleeve is sealed. An insulation layer is arranged at the inner wall of the connecting sleeve; the connecting sleeve passes through the sleeve; the connecting sleeve is fixedly connected with the sleeve. Second connecting holes are formed in the screwing-in flange; the screwing-in flange is fixed with the other end of the connecting sleeve; the sealing gasket is arranged between an end opening of the connecting sleeve and the screwing-in flange. The insulation cylinders are embedded in the first connecting holes and the second connecting holes. The flange connecting cabin penetration pipe fitting provided by the embodiment has the advantages that the sealing performance of the cabin penetration pipe fitting is good; a galvanic coupling loop formed between the flange cabin fittings and a ship or warship casing can be avoided; the corrosion of the ship or warship casing is prevented; the service life of the ship or warship casing is prolonged.

The invention discloses a positive pressure sealing performance test device and method for a syringe. The detection device comprises a first support frame, a second support frame, a telescopic rod, and a weight frame, wherein the upper end of the first support frame is provided with a first mounting part for mounting a syringe; the second support frame is located at one side of the first support frame, and the upper end of the second support frame is provided with a second mounting part; the telescopic rod is located on the second mounting part of the second support frame, the output end of the telescopic rod faces the first support frame, and the output of the telescopic rod is used for providing an axial force for a core rod of the syringe on the first support frame; the weight frame comprises a hook and a weight carrying tray, the hook is detachably connected to the core rod of the syringe, the weight carrying tray is used to carry a weight, and the weight on the weight carrying tray is used to provide a lateral force for the core rod of the syringe. The positive pressure sealing performance test device for the syringe disclosed by the invention can effectively detect the sealing performance of the syringe when the syringe is subjected to the axial force and the lateral force at the same time, and the detection method is simple and easy to operate.

The invention relates to equipment capable of detecting quality of a degradable plastic bag, which comprises a detection machine body, a motor cavity is formed in the detection machine body, a detection cavity is formed in the upper end wall of the motor cavity in a communicating mode, and a transmission cavity is formed in the right end wall of the motor cavity in a communicating mode; the equipment is mainly applied to detection of the quality attribute of the degradable plastic bag, and a pushing mechanism is triggered through movement of the threaded sliding block in the detection process,so that the compression resistance abutting block abuts against the plastic bag, and the purpose of detecting the compressive strength is achieved; a reversing mechanism is triggered through induction of a driving block and an induction block, it is guaranteed that unqualified products can be placed in a classified mode, a fan is driven to rotate through meshing of a driven gear and a driving gear, then the sealing performance of the products is detected, and meanwhile an eccentric wheel is driven to rotate in a reciprocating mode through meshing of a long gear and a transmission gear, and further, unqualified products are crushed by the crushing cutter and then are placed in the crushing cavity.

The invention relates to a method for detecting the tension of a round-link chain on a scraper conveyer. The method is characterized by comprising the steps as follows: S1, collecting tension information of at least one link of the round-link chain; S2, sending the tension information in a wireless manner; S3, receiving the tension information through at least one wireless receiving device in a preset range around the round-link chain. According to the method, data are transmitted in the wireless manner, so that the tension and the working state of the round-link chain can be monitored in real time.