415results about "Vacuum gauges" patented technology

The invention relates to the technical field of data cleaning, in particular to a medical cyclotron vacuum chamber leakage monitoring method, which comprises the following steps: acquiring the vacuum degree at each moment in a vacuum chamber, the operating power of a vacuum pump at each moment and the magnetic field intensity at each moment in real time when a medical cyclotron operates; dividing all moments into a plurality of monitoring time periods; determining the monitoring sensitivity of each monitoring time period; determining a power influence index at any moment; determining a relative amplitude difference of each monitoring time period; determining a magnetic field influence index at any moment; determining a measurement distance between any moment and other moments; and performing data cleaning on the vacuum degrees at all moments by adopting an anomaly detection algorithm, and monitoring chamber leakage of the vacuum chamber in combination with a deep learning model. According to the invention, the interference of redundant information in the data is reduced, and the accuracy of chamber leakage monitoring of the vacuum chamber is improved.

To measure a capacitance between electrodes of a sensor chip without influencing a parasitic capacitance or stray capacitance of a cable.SOLUTION: A diaphragm vacuum gauge comprises: a sensor chip 1 that comprises a first electrode formed on a pedestal, and a second electrode formed so as to face the first electrode on a diaphragm arranged across a gap from the pedestal, and in which an interval between the first and second electrodes changes according to the displacement of the diaphragm due to the pressure of a medium to be measured; an operational amplifier A1 that converts a current output from the first electrode into a voltage and amplifies it; and a coaxial cable 21 that connects the first electrode and the operational amplifier A1. The first electrode is connected to a virtual ground of the operational amplifier A1 through a core wire 22 of the coaxial cable 21.SELECTED DRAWING: Figure 3

The invention discloses a metal diaphragm capacitor composite vacuum gauge, and relates to the technical field of vacuum gauges, the metal diaphragm capacitor composite vacuum gauge comprises a vacuum gauge body and a control module, the lower side of the vacuum gauge body is fixedly connected with a lower sealing block, the lower side of the lower sealing block is fixedly connected with a connecting pipe, and the connecting pipe is communicated with the interior of the vacuum gauge body. The upper side of the inner wall of the vacuum gauge body is fixedly connected with an electrode, the lower side of the electrode is provided with a capacitor diaphragm, the electrode is not in contact with the capacitor diaphragm, a buffer cavity is formed in the connecting pipe, a buffer mechanism is arranged in the buffer cavity, and a detection mechanism is arranged on the outer side of the connecting pipe. According to the invention, through the arrangement of the connecting pipe, the gas channel and the stop block, high-speed gas upwelling can be effectively blocked when gas flow recoil occurs, instantaneous impact on the capacitor diaphragm is relieved, reading deviation or device damage caused by diaphragm deformation quantity overrun is avoided, and the system has the characteristics of high practicability and improvement of the adaptability of the system to complex working conditions.

The invention relates to the technical field of vacuum measurement, in particular to a multi-sealing-cavity MEMS capacitor thin film vacuum gauge, and is characterized in that a silicon substrate is arranged above substrate glass and is bonded with the substrate glass; a pressure sensing film is obtained in the middle of the silicon substrate in a photoetching and dry etching mode; a fixed metal electrode is obtained in the middle of the substrate glass in a photoetching and sputter coating mode; a capacitance gap is formed between the fixed metal electrode and the pressure sensing film; photoetching and corroding the silicon substrate, forming a working sealing cavity above the pressure sensing film, and respectively forming a first cavity and a second cavity above two sides of the pressure sensing film; getter blocks are arranged in the first chamber and the second chamber; and the sealing glass is arranged above the silicon substrate. On the premise that the size of the vacuum gauge is not obviously increased, the multiple chambers are arranged to form the sealing cavity, the air suction capacity is improved, high vacuum obtaining and long-term maintaining performance of the sealing cavity of the vacuum gauge are ensured, and the long-term stability of the vacuum gauge is greatly improved.

The invention relates to the technical field of pressure detection, in particular to a single crystal furnace vacuum pipeline pressure measuring method and device. The method comprises the following steps: quantifying temperature deviation of a vacuum pipeline in a crystal growth process; carrying out matching analysis on the temperature data and the growth trend of the growth rate, and carrying out time delay identification on the temperature data and the growth rate through a matching section group; dynamic compensation of temperature lag is analyzed according to the relation between temperature data in the crystal growth process and the time delay change of the growth rate and the deviation change of pressure, and a delay compensation index is determined; and performing temperature data compensation according to the delay compensation index and the temperature offset to obtain current adjustment pressure measurement data. The dynamic accompanying condition of the temperature and the crystal growth is analyzed, the time delay compensation is determined through the accompanying time delay degree, the temperature data is compensated in combination with the temperature deviation, and the pressure is adjusted, so that the measured pressure data can more truly reflect the pressure condition in the crystal growth process, and the pressure measurement precision is improved.

The invention relates to a vacuum switch arc extinguish chamber vacuum degree on-line detection system and method. The system comprises a laser induction module which comprises a laser, a dichroscope, a coupling lens, a conduction optical fiber and an LIBS probe which are arranged in sequence; the plasma light collection module comprises a collection optical fiber, a collection lens, a dichroscope, a conduction optical fiber and an LIBS probe which are arranged in sequence, and the collection optical fiber is connected with the collection and detection module; the acquisition and detection module comprises a spectral measurement unit and a PC end, and the spectral measurement unit is connected with the collection optical fiber and the PC end; and the delay subsystem is respectively connected with the spectral measurement unit and the laser. Compared with the prior art, the online vacuum degree detection device has the advantages of online vacuum degree detection and the like.

The utility model relates to the technical field of vacuum detection of coated products, and discloses a detection device with a protection function, which comprises a vacuum coating machine, a vacuum gauge is arranged on the surface of the vacuum coating machine, a protection assembly and a release assembly are arranged on the surface of the vacuum coating machine, and the protection assembly comprises a fixed plate, a movable plate and a movable plate, the detection device comprises a fixed plate and a protection assembly, the fixed plate is fixed to the surface of a vacuum coating machine, a first spring is fixed to the bottom of the fixed plate, a protection frame is arranged at the bottom of the first spring, and the protection frame is slidably connected to the surface of the vacuum coating machine. The side, away from the slope, of the clamping block abuts against the side, away from the slope, of the limiting block, the limiting block limits the clamping block, the protection frame is stabilized, the protection frame completely covers the vacuum gauge, the protection frame can protect the vacuum gauge, and it is avoided that the vacuum gauge is mistakenly touched to be damaged, and use is affected.

The invention relates to a vacuum gauge matching circuit for measuring a capacitance value by using double pulse signals and a measurement method, belongs to the field of vacuum gauges, solves the problem of low measurement accuracy caused by reading drifting and temperature drifting in the prior art, and comprises a pulse signal generator, a signal amplification circuit and a signal processing module, wherein the pulse signal generator is used for generating pulse signals which are respectively connected to an annular electrode and a circular electrode of a fixed electrode of the vacuum gauge and connected to the signal processing module; the signal amplification circuit comprises a first signal amplifier and a second signal amplifier which are used for respectively obtaining electric signals on an annular electrode and a circular electrode of a fixed electrode of the vacuum gauge and respectively amplifying the obtained electric signals; and the signal processing module is used for processing the two paths of electric signals output by the signal amplification circuit and the pulse signal, and calculating the vacuum degree based on a processing result. Simple and accurate vacuum degree measurement is realized.

The invention belongs to the technical field of testing devices, and discloses a maintenance testing device for a vacuum valve and a testing method thereof.The maintenance testing device comprises a first vacuum pressure gauge, a second vacuum pressure gauge, a vacuum cavity, a mass flow meter, a control box, a gas pressure adjusting and switching jig and a connector; the first vacuum pressure gauge and the second vacuum pressure gauge are both installed at the top of the vacuum cavity, the switching jig and the connector are installed at one end of the vacuum cavity, the bearing assembly is arranged below the switching jig and the connector, the supporting frame is arranged below the vacuum cavity, and the mass flow meter, the control box and the gas pressure adjusting device are installed in the supporting frame. Through the testing device, off-line valve detection can be carried out, pressure control testing and position control can be conveniently carried out on the valve, the testing efficiency of the valve is improved, the testing device further has the advantage of being small in occupied area, and the testing device can be matched with different jigs to operate valves of different specifications, so that the adaptability of the device is improved.

The invention discloses an overpressure protection device for a vacuum gauge, and relates to the technical field of overpressure protection of vacuum gauges.The overpressure protection device comprises a main pipe and a control module, a sealing cover is fixedly connected to the right side of the main pipe, three openings are formed in the right side of the sealing cover, and a first fixing pipe is fixedly connected to the inner wall of the opening in the upper portion of the right side of the sealing cover; an exhaust port is formed in the upper side of the middle of the first fixing pipe, a pressure valve is fixedly connected to the inner wall of the first fixing pipe, and a sealing mechanism and a pressure reduction mechanism are arranged in two openings in the lower portion of the right side of the sealing cover correspondingly. And by arranging a second fixing pipe, a telescopic rod and an elastic rod, when the air pressure rises, a mechanical displacement conversion mode can be used for synchronously amplifying and transmitting force to a pressing rod, the induction precision and response sensitivity of the piezoelectric module are enhanced, and the vacuum gauge has the characteristics that the practicability is high, and the use reliability of the vacuum gauge is effectively improved.

The invention relates to a device and a method for detecting the vacuum degree of a vacuum switch arc extinguish chamber based on a photomultiplier. The device comprises a plasma excitation module used for exciting a plasma signal in the vacuum switch arc extinguish chamber to be detected; the photomultiplier detection module is used for detecting a plasma signal, acquiring the plasma signal by providing focusing voltage and accelerating voltage, and converting the plasma signal into a current signal; the signal conversion module is used for converting the current signal into a voltage signal; the detection module is used for extracting characteristic parameters from the voltage signals, judging the vacuum degree interval of the arc extinguish chamber of the vacuum switch to be detected, and calculating the vacuum degree of the arc extinguish chamber of the vacuum switch to be detected according to a preset fitting relation curve; and the control module is used for controlling the plasma excitation module to perform excitation and optimizing control on the plasma excitation module according to the calculated vacuum degree result. Compared with the prior art, the method has the advantages of reducing hardware cost and use cost and the like.

Disclosed example pressure transducers include: a pressure housing comprising a first cavity; a fluid input line configured to provide a fluid to the first cavity; a first pressure measurement assembly having a first type and configured to output a first measurement signal based on a pressure of the fluid in the first cavity; a second pressure measurement assembly having a second type and configured to output a second measurement signal based on the pressure of the fluid in the first cavity; and a controller configured to determine the pressure of the fluid in the first cavity based on the first measurement signal when the pressure is within a first range and determine the pressure of the fluid in the first cavity based on the second measurement signal when the pressure is within a second range.

The invention discloses a dynamic calculation method based on piezoresistance-resistance composite vacuum transmitter switching, and relates to the technical field of vacuum transmitters, and the method comprises the steps: obtaining a vacuum degree trend coefficient through a piezoresistance gauge vacuum degree acceleration and a resistance gauge vacuum degree acceleration; obtaining a sensitivity compensation coefficient and a vacuum degree change coefficient based on the vacuum degree trend coefficient, then obtaining a vacuum degree change abnormal coefficient based on the vacuum degree change coefficient, and finally determining the final vacuum degree based on the vacuum degree trend coefficient, the sensitivity compensation coefficient and the vacuum degree change abnormal coefficient. The output voltage of the piezoresistance-resistance composite vacuum transmitter can be obtained through the vacuum degree, the signal output smoothness can be effectively improved, the measurement accuracy is improved, and seamless signal connection is achieved.

The invention discloses a method, a device and equipment for determining a vacuum degree threshold value, a medium and a product, and relates to the technical field of electron beam measurement, and the method for determining the vacuum degree threshold value comprises the steps: carrying out the vacuum pumping operation of a transmission cavity after the transmission cavity of a charged particle beam imaging device transmits a target wafer; the vacuum degrees of the transmission cavity at multiple moments in the vacuumizing operation execution process are obtained; a target first vacuum degree curve matched with the vacuum degrees at the multiple moments is searched from all first vacuum degree curves in a database, and the database comprises the multiple first vacuum degree curves and corresponding vacuum degree stable values; each first vacuum degree curve is used for representing the change trend of the vacuum degree of the transmission cavity after the wafers with different deflation amounts are transmitted into the transmission cavity; and determining a vacuum degree stable value corresponding to the target first vacuum degree curve as a target vacuum degree threshold value of the transmission cavity corresponding to the target wafer.

The invention discloses a capacitive semiconductor miniature vacuum gauge and a vacuum detection method, and the vacuum gauge achieves the high precision, miniaturization and low power consumption of vacuum measurement through the combination of the electrical amplification characteristic of a semiconductor device and a capacitive sensing principle, makes full use of the compatibility of a standard CMOS technology, and improves the measurement precision. The air pressure sensing module and the signal processing unit are vertically integrated, so that the manufacturing process is simplified, the production cost is reduced, the reliability and the mass production potential of the device are remarkably improved, the measurement range is further widened and the sensitivity is optimized by adjusting the geometric parameters of the electrode, and the sensor has important practical value and wide commercial prospect and is worthy of popularization and application. And an efficient and economic solution is provided for the development of the next generation of miniature vacuum gauges.

The invention discloses a vacuum-vertical shaft-electroosmosis combined dehydration test device for waste mud, and belongs to the technical field of geotechnical tests. The device is composed of a modular model cylinder, a direct-current power supply system, a measuring system, a vacuum pump and a vertical vacuum drainage body. The model cylinder is formed by connecting a top cylinder, a middle cylinder and a bottom cylinder through bolts and stacking sealing rings, the height can be flexibly adjusted, and good air tightness is kept. And the cylinder side is provided with a standard quick-plug interface, so that a vacuum meter and a pore pressure sensor can be conveniently connected. An anode electrode plate and a cathode electrode plate which are connected with a direct-current power supply are respectively arranged on the top surface and the bottom surface of the slurry, and the vertical vacuum drainage body penetrates through the bottom horizontal drainage layer and is fixed on the positioning frame to form a vacuum-vertical shaft combined drainage channel. The device effectively overcomes the problems of vacuum pressure transmission attenuation, overlong drainage path, non-uniform electroosmosis dehydration and the like through the coupling effect of vacuum, the vertical shaft and electroosmosis, can realize accurate research on different depth dehydration mechanisms of slurry, and has the advantages of rapid dehydration, simplicity and convenience in operation, environmental protection and high efficiency.

A method for inverting true mass content of water ice in lunar soil using a lunar soil water molecule analyzer (LSWMA) includes: obtaining weight data of a lunar soil sample, temperature data of a sample receiving container that receives the lunar soil sample, and duration of a transfer process of the lunar soil sample; obtaining measurement data of total pressure of the water vapor; calculating a sublimation loss based on a sublimation rate and the duration of the transfer process, and estimating a relative sublimation loss rate; correcting the measurement data of the total pressure of the water and obtaining true pressure data of the water vapor; and calculating, based on the true pressure data of the water vapor, mass of the water vapor, and further calculating mass content of water ice in lunar soil.

The utility model discloses a vacuum degree control device which comprises a vertical pipe, the bottom of the vertical pipe is arranged in a sealed mode, the upper end of the vertical pipe is communicated with a transverse pipe, a vacuum sensor used for measuring the vacuum degree in the transverse pipe is installed on the transverse pipe, the transverse pipe is communicated with a first connecting pipe, and the first connecting pipe is communicated with a vacuumizing opening of reaction equipment through a first hose. The first connecting pipe is provided with a first valve, the lower end of the vertical pipe is communicated with a second connecting pipe, the second connecting pipe is communicated with an air inlet of the vacuum pump through a second hose, and the second connecting pipe is provided with a second valve; according to the utility model, the vertical pipe, the horizontal pipe, the vacuum sensor, the vacuum breaking valve, the first valve and the second valve are arranged, so that vacuum degree control operation can be carried out on any experimental equipment, the whole mechanism is simple, the manufacturing cost is low, and later overhaul and maintenance are facilitated.

The present invention relates to the field of vacuum monitoring technology, and in particular to a vacuum preloading soil vacuum degree monitoring system and method, the monitoring system comprising: a plurality of acquisition modules, a plurality of vacuum degree sensors, a first comparison module generation module, a second comparison module, a marking module, a division module, a third comparison module and an adjustment module; obtaining the preloading data of each monitoring point in the target area, and determining whether the preloading conditions of each monitoring point meet the preset standards; analyzing the preloading data of each monitoring point, and classifying and marking each monitoring point according to the analysis results; dividing the target area into regions according to the classification and marking results, and determining the actual operation mode of each vacuum pump according to the regional division results. The present invention can effectively identify problems existing in the preloading process, timely adjust the operation mode of the vacuum pump, ensure the optimization of the preloading effect, improve the utilization rate of equipment such as vacuum pumps, and reduce resource waste.

The utility model provides a low vacuum pressure transmitter which comprises a shell base, a sleeve and a cover body, the sleeve is installed at one end of the base, the cover body is installed at one end of the sleeve, and a ceramic capacitance sensor, a circuit board support and a transmitter circuit board are installed in a cavity formed by the base, the sleeve and the cover body. The transmitter circuit board is connected with the ceramic capacitance sensor through a wire, a signal output port of the transmitter circuit board is connected with a 15Pin / D-Sub connector located outside the cover body through a shielding wire, a detection channel is arranged in the shell base, and the detection channel is communicated with the position of the ceramic capacitance sensor. The pressure transmitter adopts the ceramic capacitance sensor, so that the product precision and stability can be ensured, and the transmitter is convenient in overall structural design and installation, low in cost and convenient to popularize and apply.

To provide a method for manufacturing a vacuum pressure sensor, a device including the vacuum pressure sensor, and / or a system including the vacuum pressure sensor.SOLUTION: The vacuum pressure sensor can comprise a weld ring and a header element welded to the weld ring. The header element may comprise one or more header pins hermetically sealed to the header element, a piezoresistive sensing element coupled to the header element and electrically coupled to the one or more header pins, a corrugated diaphragm coupled to the header element and the weld ring, the corrugated diaphragm defining, with the header element, a cavity configured to contain a material, and a plastic spacer disposed within the cavity. The vacuum pressure sensor may comprise a protruding sharp edge or a substantially flat edge without corner breaks of at least a portion of the header element in physical contact with the metal plate.SELECTED DRAWING: Figure 1

A single vacuum source is used for multiple high flow rate subsystems in an inkjet printer to control the dispersal of satellite droplets during ink ejection while printing and ensuring that the substrates are sufficiently flat for the printing process. This reduces cost and layout requirements, provides a simplified control structure, and allows integration of a centralized liquid removal system and a single vacuum source. Accordingly the printing quality, robustness, and versatility of inkjet printers is improved.

The present invention discloses a metal diaphragm capacitor compound vacuum gauge, which includes a first housing, a second housing and an external connection pipe. The external connection pipe is fixedly connected to the bottoms of the first housing and the second housing, and an inner housing is inserted between the first housing and the second housing; a metal pipe is fixedly inserted at the top of the inner housing, and a first diaphragm and a second diaphragm are respectively arranged on both sides of the inner housing. A first electrode is attached to the side of the first diaphragm away from the metal pipe, and a first electrode tube is fixedly connected to the side of the first electrode close to the first housing. The present invention utilizes the principle of pure mechanical properties to achieve full-range, medium-high vacuum degree and high-precision measurement with the cooperation of two metal diaphragm capacitor sensor cores. The product adopts the principle of metal diaphragm capacitor, featuring high precision and fast response; it uses stainless steel material, has good corrosion resistance, can meet the use under different gases and different working conditions, does not require preheating, can directly measure different gases, is simple to maintain and has good repeatability of the product.

The utility model discloses a cup body temperature measuring table which comprises a table frame, a rotatable rotating disc is arranged on the table frame, the rotating disc is connected with a rotation driving mechanism, a plurality of temperature measuring mechanisms are arranged on the rotating disc, each temperature measuring mechanism comprises a fixing frame, a plurality of temperature measuring rings are arranged in the fixing frame, and a plurality of temperature sensors are arranged on the inner wall of each temperature measuring ring. And the temperature measuring mechanisms are uniformly arranged on the rotating disc at intervals, so that the angles between the fixing frames are the same. The rotation driving mechanism can drive the rotating disc to rotate, so that the temperature measuring mechanisms at different positions of the rotating disc can rotate to the feeding position. And the temperature measuring mechanisms are uniformly distributed, and the moving time of each temperature measuring mechanism is the same, so that uniform operation of feeding operation is facilitated, and the feeding process of temperature measurement is more automatic and more intelligent. When the vacuum cup is placed in the temperature measuring device, the temperature can be measured, the temperature can be measured after the rotating disc rotates by one circle, and the time in the transferring and feeding process can be shortened.

The utility model discloses an automatic monitoring device which comprises an acquisition base, a communication base and a locking assembly. An acquisition plate is arranged in the acquisition base, and at least one probe assembly is connected to the acquisition plate; a forwarding module is arranged in the communication base, and the forwarding module is in data connection with the acquisition board; the locking assembly is used for locking the communication base on the acquisition base and comprises a fixed disc and a limiting plate, the fixed disc is connected with the acquisition base, and the limiting plate is movably arranged on the communication base; wherein a limiting groove with a side opening is formed in the fixing disc, the limiting plate can move between a locking position where the limiting plate stretches into the limiting groove and an avoiding position where the limiting plate is in avoiding with the limiting groove, and the limiting plate is limited by the limiting groove in the vertical direction when stretching into the limiting groove through the side opening. According to the utility model, the communication base can be locked on the fixed disc, and the communication base has the advantages of convenient assembly and strong practicability.

The present invention discloses a vacuum preloading soil multi-depth integrated vacuum degree monitoring device, including a collection base, a plurality of vacuum detection tubes and a plurality of transfer tubes, the collection base is placed on the soil surface and below the preloading sealing film corresponding to the detection hole, a plurality of vacuum detection tubes are installed in the detection hole at intervals up and down, and the transfer tube is connected to the upper and lower vacuum detection tubes; the vacuum detection tube includes a columnar tube body, a pressure sensor and a cable, the columnar tube body has an installation cavity and a pressure detection cavity, the installation cavity is arranged above the pressure detection cavity, the pressure sensor is installed in the installation cavity and the probe of the pressure sensor extends downward into the pressure detection cavity, the cable is arranged in the columnar tube body to supply power to the pressure sensor; the outer wall of the pressure detection cavity is provided with a plurality of vents and a water-proof and breathable film wrapped around the outside of the vents, and the pressure detection cavity maintains pressure communication with the soil through the vents and the water-proof and breathable film. The present invention has the advantages of accurate installation position and simple construction operation.

This invention discloses a vacuum glass, relating to the field of glass product technology. The vacuum glass includes a glass body and a vacuum sensing probe. The glass body includes a first glass layer, a second glass layer, and a sealing edge. A gap is provided between the first and second glass layers, and the sealing edge seals the periphery of the gap, forming a vacuum cavity. The vacuum cavity is formed by welding solder in a vacuum environment. The vacuum sensor probe is disposed within the vacuum cavity and is used to detect the vacuum level of the vacuum cavity. A data processor is disposed outside the vacuum cavity and is wired or wirelessly connected to the sensing probe to receive data transmitted by the vacuum sensing probe. By placing a vacuum sensing probe within the vacuum cavity inside the vacuum glass, the vacuum level inside the vacuum glass can be detected conveniently and quickly, enabling efficient detection of the vacuum glass.

The utility model discloses a performance detection device for a vacuum arc-extinguishing chamber, which comprises a supporting plate, a supporting plate and an insulation detection transformer, the supporting plate is arranged at the top of the supporting plate, the insulation detection transformer is arranged at the bottom of the supporting plate, the supporting plate is movably provided with a vertical clamping plate, the vertical clamping plate is provided with a horizontal slot, and the vertical clamping plate is provided with a horizontal slot. The top of the clamping plate is provided with a fastener which extends downwards into the slot, and the supporting plate is provided with a moving contact reciprocating pulling member which is located at the upper part of the supporting plate. The utility model belongs to the technical field of vacuum arc-extinguishing chamber performance detection devices, and particularly relates to a performance detection device for a vacuum arc-extinguishing chamber.

The utility model discloses a formation and capacity grading negative pressure device which comprises an argon bottle, a vacuum generator and a gas washing bottle, the argon bottle is communicated with the vacuum generator through a first pipeline, and the vacuum generator is communicated with the gas washing bottle through a second pipeline. And the vacuum generator is used for converting gas in the argon bottle from positive pressure to negative pressure. And a second gas valve is mounted on the first pipeline between the argon bottle and the vacuum generator. And an air filter is arranged on the second pipeline between the vacuum generator and the gas washing bottle. The argon bottle provides a gas source, the gas source is converted into negative pressure through the vacuum generator, and waste gas generated during formation and capacity grading of the sodium-ion battery is pumped out. Meanwhile, argon is used as protective gas to effectively prevent waste gas of the battery cell from polluting an interface, so that various properties of the battery cell are improved. And the whole module is simple in structure, modular operation can be realized, and the cost is relatively low while the production efficiency of the battery cell is improved.

The invention relates to the technical field of petroleum pipes in the water and petroleum industry, in particular to a U-shaped thermos bottle type petroleum casing pipe for a geothermal well, which comprises an inner-layer casing pipe, an outer-layer casing pipe and a vacuum module. The inner-layer sleeve and the outer-layer sleeve are both of a hollow cylindrical structure, the outer-layer sleeve is connected with the inner-layer sleeve through two annular connecting pieces to form a vacuum interlayer, the outer wall of the outer-layer sleeve is provided with a through hole and an NPT bolt, the NPT bolt is used for vacuumizing the vacuum interlayer, the outer wall of the outer-layer sleeve is provided with a vacuum degree module, and the vacuum degree module is connected with the outer-layer sleeve. The vacuum degree module comprises a shell, an air bag, a sealing ring, a spring and a vacuum ruler and is used for monitoring the vacuum degree of the vacuum interlayer in real time. According to the thermos bottle type petroleum casing pipe for the U-shaped geothermal well, the design is similar to a thermos bottle, heat conduction can be effectively reduced, the heat preservation effect of the inner-layer casing pipe is improved, meanwhile, the monitoring module is arranged, the thermos bottle type petroleum casing pipe is suitable for the high-temperature geothermal environment, and the exploitation efficiency and safety of the geothermal well are improved.