Magnetic suspension bearing rotor core pressing device and application method thereof

Abstract

The invention relates to the field of bearing processing, in particular to a magnetic suspension bearing rotor core pressing device which comprises a workbench and a rotor core body, the rotor core body comprises a shell, a rotating table matched with the rotor core body is installed on the workbench, an iron core set is installed in the shell, a tool ring is installed on the iron core set, and a support is fixedly connected to the workbench. A pressing mounting mechanism for mounting a pressing tool is mounted on the bracket; the pressing installation mechanism comprises a control box, a pressurizing device is installed in the control box, the movable end of the pressurizing device is fixedly connected with a pressurizing plate, and the lower end of the pressurizing plate is connected with a pair of clamping blocks through an electric guide rail. A mounting hole is formed in the middle of the pressurizing plate, a rotating arm is rotationally connected into the mounting hole, and an early warning unit is arranged between the pressing tool and the shell, so that automatic pressing of the rotor iron core is achieved, marking liquid is injected into the sealed space after pressing, an alarm can be given in time when a fastener is loosened, the pressing tool can be rapidly replaced, and the working efficiency is improved. And the device adapts to rotor cores of different models.

Description

Technical Field

[0001] The present invention relates to a magnetic suspension bearing rotor core clamping device and a use method thereof, and in particular to a magnetic suspension bearing rotor core clamping device and a use method thereof applied in the field of bearing processing. Background Art

[0002] As a new type of high-performance bearing that uses magnetic field force to suspend the shaft and load in space without mechanical friction and lubrication, magnetic bearings are widely used in modern industry. The stable suspension and precise positioning of its rotor rely on the coordinated work of multiple components, among which the rotor core clamping fixture is one of the key components to ensure the stable operation of magnetic bearings.

[0003] In the prior art, the design of the magnetic bearing rotor core clamping tooling is mainly focused on providing a stable clamping force to prevent the rotor core from loosening or shifting during operation. This device usually uses a mechanical clamping structure, such as bolts, nuts and other fasteners, to firmly fix the rotor core to the bearing seat or bracket. By adjusting the preload of the fastener, the degree of clamping of the rotor core can be accurately controlled.

[0004] The Chinese invention patent CN109940545B specification discloses a bearing installer. The bearing installer provided by the invention uses electromagnetic method to press the bearing, the bearing is evenly stressed, and the bearing installation process does not require manual knocking, which protects the safety of the staff. The Chinese invention patent CN114850816A specification discloses a bearing installation clamping structure, which belongs to the field of bearing installation technology, and includes a base, a slide, a fixed seat, a guide rail and a first push rod. The bearing installation clamping structure disclosed in the invention adopts an assembly line operation mode to install the planetary shaft, which greatly improves the installation efficiency. At the same time, the cooperation between various devices can effectively improve the assembly accuracy and reduce the scrap rate.

[0005] The existing rotor core clamping tooling is prone to loosening defects after long-term use, which in turn causes the clamping force to decrease and the rotor core to loosen. This loosening not only affects the stability and accuracy of the equipment, but may also cause increased noise and vibration, and even cause failures. The current rotor core clamping tooling is not easy to detect when it is loose, and it is inconvenient to provide an early warning when it is loose. Summary of the invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that the existing rotor core clamping tooling is prone to loosening defects after long-term use, which in turn causes the clamping force to decrease and the rotor core to loosen. This loosening not only affects the stability and accuracy of the equipment, but may also cause increased noise, increased vibration, and even cause failures. The current rotor core clamping tooling is not easy to detect when it is loose, and it is inconvenient to issue an early warning when it is loose.

[0007] In order to solve the above problems, the present invention provides a magnetic bearing rotor core clamping device, comprising a workbench and a rotor core body, the rotor core body comprising a shell, a rotating table matching the rotor core body is installed on the workbench, a core group is installed in the shell, a tooling ring is installed on the core group, a bracket is fixedly connected to the workbench, and a clamping installation mechanism for installing a clamping tool is installed on the bracket; The clamping installation mechanism includes a control box, in which a pressurizing device is installed, a pressurizing plate is fixedly connected to the movable end of the pressurizing device, and a pair of clamping blocks are connected to the lower end of the pressurizing plate through an electric guide rail; A mounting hole is provided in the middle of the pressure plate, and a rotating arm is rotatably connected in the mounting hole. The rotating arm includes a main arm plate. A motor matching the main arm plate is installed in the control box, and a telescopic shaft is connected between the power output end of the motor and the main arm plate; a pair of movable platforms are connected to the lower end of the main arm plate through an electric slide rail, and a pressure block is fixedly connected to the lower end of the movable platform; The clamping tooling includes a pressing ring body, the lower end of which is paved with an elastic rubber layer, a plurality of evenly distributed through holes are opened at the lower end, a sealing cover is clamped at the opening of the through holes, and an air hole communicating with the through holes is opened at the side end of the pressing ring body, and a hot melt tube is inserted into the air hole; An early warning unit is provided between the clamping tooling and the shell, and the early warning unit includes a hollow bolt, which passes through the tooling ring and is threadedly connected to the shell, a positioning column is inserted in the middle of the hollow bolt, and both ends of the positioning column are respectively connected to the shell and the sealing cover, and the top end of the hollow bolt is fixedly connected to a piston cover matching the through hole, and a sealed space is formed between the piston cover and the sealing cover, and the sealed space is filled with marking liquid.

[0008] In the above-mentioned magnetic bearing rotor core clamping device, it is convenient to realize the automated installation of the clamping tooling, and the clamping tooling is convenient for detecting the looseness of the tooling ring.

[0009] As a further improvement of the present application, a cross slot is provided at the top of the sealing cover, a wiring plug matching the pressure sensor is installed in the middle of the cross slot, an auxiliary motor is fixedly connected to the pressure block, and the power output end of the auxiliary motor is connected to an adjusting head matching the sealing cover through an electric extension rod.

[0010] As a further improvement of the present application, a pair of mounting grooves are opened on the inner wall of the clamping block, and a heater and an infusion tube are respectively installed in the pair of mounting grooves. A nozzle matching the air hole is installed at the output end of the infusion tube, and a joint is installed at the upper end of the pressure plate, and the joint and the nozzle are communicated through the infusion tube.

[0011] As a further improvement of the present application, a pressure sensor is installed in the sealing cover, and a detection end of the pressure sensor is located in the through hole.

[0012] As another improvement of the present application, the marking fluid includes a colored liquid and a colored sealing oil.

[0013] As another improved supplement of the present application, the hot melt tube includes an outer tube and an inner tube. The outer tube is made of heat-resistant material and is clamped with the inner wall of the pore. The inner tube is made of hot melt material and has a melting temperature of 60 degrees Celsius.

[0014] As yet another improved supplement of the present application, the marking fluid includes a colored liquid and a colored sealing oil.

[0015] As another improved supplement of the present application, the hot melt tube includes an outer tube and an inner tube. The outer tube is made of heat-resistant material and is clamped with the inner wall of the pore. The inner tube is made of hot melt material and has a melting temperature of 60 degrees Celsius.

[0016] It also includes an auxiliary clamping system, which includes a processor, and the processor is connected to a control module, a monitoring module, a data processing module and a data storage module; The control module is used to receive and process data from the monitoring module and automatically control the pressing and installing mechanism according to preset algorithms and logics; The monitoring module is used to monitor and collect working status data of the clamping tooling in real time; The data processing module is used to process and analyze the data collected by the monitoring module, and determine whether the clamping tooling is loose or has other abnormal conditions according to the preset alarm threshold; The data storage module is used to store the data collected by the monitoring module and the results calculated by the processing module.

[0017] The use method of the magnetic bearing rotor core clamping device includes: A1, install the clamping tooling, clamp the clamping tooling with a pair of clamping blocks, and use the electric guide rail to adjust the position of the clamping blocks to ensure that the main body of the pressing ring is aligned with the tooling ring; start the pressurizing device through the control box, drive the pressurizing plate to press down, so that the elastic rubber layer contacts the tooling ring to form a preliminary compression; A2, Sealed space construction and marking liquid injection; adjust the position of the clamp block to match and dock the nozzle position with the air hole position; then the nozzle injects the marking liquid into the air hole through the infusion tube to fill the sealed space between the piston cover and the sealing cover until the pressure detection value reaches the set value; Then adjust the position of the clamp block to match the position of the heater with the air hole, and heat the hot melt tube through the heater to melt it; The clamping block is reset, and then the rotating rotor core body is driven to rotate by a set angle, and then the above work is repeated until multiple sealing spaces are filled with marking liquid; A3, pressing and adjusting, start the motor to drive the rotating arm to rotate to the set angle, then turn on the pressurizing device to make the pressing block apply uniform pressure to the position of the sealing space; at this time, detect the change of the pressure detection value. If the pressure detection value changes to outside the set value range, the sealing cover is rotated by controlling the adjustment head to adjust the position of the sealing cover, and then adjust the hydraulic pressure in the sealing space to within the set range; A4, insert the protective gasket covering the sealing cover into the opening of the through hole to complete the compression installation; when the equipment is in use, remove the protective gasket, and then connect the pressure sensor to monitor the sealing space during use.

[0018] In summary, this solution facilitates the automated clamping of the rotor core. After clamping, marking liquid is injected into the sealed space, and then the pressure detection value after filling with the marking liquid is detected by the pressure sensor. The alarm threshold is set according to the pressure detection value so that an alarm can be given in time when the fastener is loose. The clamping tooling can be quickly replaced to adapt to different types of rotor cores. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional diagram of the device according to the first embodiment of the present application; Figure 2 for Figure 1 The structural diagram at A in the middle; Figure 3 This is a side sectional view of the device according to the first embodiment of the present application; Figure 4 for Figure 3 The structural diagram at B in the middle; Figure 5 for Figure 4 Schematic diagram of the structure at C in the middle; Figure 6 This is a front cross-sectional view of the device according to the first embodiment of the present application; Figure 7 This is a block diagram of the auxiliary clamping system of the second embodiment of the present application; Figure 8 This is a flow chart of the method of use of the third implementation method of this application.

[0020] Description of the numbers in the figure: 1. Rotor core body; 11. Shell; 12. Fixture ring; 2. Bracket; 3. Pressing and mounting mechanism; 31. Control box; 32. Pressure plate; 33. Clamp; 4. Rotating arm; 41. Main arm plate; 42. Movable platform; 43. Pressing block; 44. Auxiliary motor; 45. Adjusting head; 5. Pressing tool; 51. Pressing ring body; 52. Elastic rubber layer; 53. Sealing cover; 54. Hot melt pipe; 6. Early warning unit; 61. Hollow bolt; 62. Positioning column; 63. Piston cover. DETAILED DESCRIPTION

[0021] The following is a detailed description of three implementation methods of the present application in conjunction with the accompanying drawings.

[0022] The first implementation method: Figure 1-6 It is shown that a magnetic suspension bearing rotor core clamping device comprises a workbench and a rotor core body 1, a rotating table matching the rotor core body is installed on the workbench, the rotating table is used to place the rotor core body 1 and drive it to rotate, the rotor core body comprises a shell 11, a core group is installed in the shell 11, a tooling ring 12 is installed on the core group, the tooling ring 12 is a prior art, and the tooling ring 12 is used to clamp and fix the core group; A bracket 2 is fixedly connected to the workbench, and a clamping installation mechanism 3 for installing a clamping tool 5 is installed on the bracket 2; The clamping installation mechanism 3 includes a control box 31, in which a pressurizing device is installed, and a pressurizing plate 32 is fixedly connected to the movable end of the pressurizing device, and a pair of clamping blocks 33 are connected to the lower end of the pressurizing plate 32 through an electric guide rail; a pair of mounting grooves are provided on the inner wall of the clamping block 33, and a heater and an infusion tube are respectively installed in the pair of mounting grooves, and a nozzle matching the air hole is installed at the output end of the infusion tube, and a joint is installed at the upper end of the pressurizing plate 32, and the joint and the nozzle are communicated through the infusion tube; the heater is used to heat the hot melt tube 54 to melt it; the nozzle is used to inject a marking liquid into the air hole, so that the marking liquid is filled in the sealed space; A mounting hole is provided in the middle of the pressure plate 32, and a rotating arm 4 is rotatably connected in the mounting hole. The rotating arm 4 includes a main arm plate 41. A motor matching the main arm plate 41 is installed in the control box 31, and a telescopic shaft is connected between the power output end of the motor and the main arm plate 41; the motor is used to drive the rotating arm 4 to rotate; The lower end of the main arm plate 41 is connected to a pair of movable platforms 42 through an electric slide rail, and the lower end of the movable platform 42 is fixedly connected to a pressing block 43; The clamping tool 5 includes a pressing ring body 51, the lower end of which is paved with an elastic rubber layer 52, a plurality of evenly distributed through holes are provided at the lower end of the pressing ring body 51, a sealing cover 53 is clamped at the opening of the through holes, an air hole communicating with the through holes is provided at the side end of the pressing ring body 51, a hot melt tube 54 is inserted into the air hole; a pressure sensor is installed in the sealing cover 53, and the detection end of the pressure sensor is located in the through hole; A cross groove is provided at the top of the sealing cover 53, and a wiring plug matching the pressure sensor is installed in the middle of the cross groove. An auxiliary motor 44 is fixedly connected to the pressure block 43, and the power output end of the auxiliary motor 44 is connected to an adjusting head 45 matching the sealing cover 53 through an electric extension rod. The adjusting head 45 includes a cross shaft, and a docking joint matching the wiring plug is installed in the middle of the cross shaft. The adjusting head 45 is used to rotate the sealing cover 53 to adjust the position of the sealing cover 53.

[0023] An early warning unit 6 is provided between the clamping tool 5 and the housing 11. The early warning unit 6 includes a hollow bolt 61. The hollow bolt 61 passes through the tooling ring 12 and is threadedly connected to the housing 11. A positioning column 62 is inserted in the middle of the hollow bolt 61. Both ends of the positioning column 62 are respectively connected to the housing 11 and the sealing cover 53. One end of the positioning column 62 is fixedly connected to the housing 11, and the other end of the positioning column 62 is threadedly connected to the sealing cover 53. A threaded groove is provided at the bottom of the sealing cover 53. A piston cover 63 matching the through hole is fixedly connected to the top of the hollow bolt 61. A sealed space is formed between the piston cover 63 and the sealing cover 53, and the sealed space is filled with a marking liquid. The elastic rubber layer 52 is used for buffering and sealing the sealed space. After the clamping tool 5 is installed, the top of the piston cover 63 is located in the through hole. When the preload between the tooling ring 12 and the core is reduced, the tooling ring 12 floats or vibrates, causing the piston cover 63 to squeeze the marking liquid in the sealing space, causing the pressure sensor at the sealing cover 53 to detect the pressure value, thereby determining that the clamping tooling 5 is loose; When the device is used without connecting the pressure sensor, when the preload force is reduced and the vibration amplitude of the tooling ring 12 is large, the hydraulic pressure in the sealed space is too large, and when the hot melt tube 54 is pushed outward, the marking liquid leaks out, and the tooling ring 12 can be judged to be loose by detecting the liquid leakage through the externally arranged sensor; A person skilled in the art selects a suitable sensor in the prior art to be installed externally to detect leakage; This solution facilitates the automated clamping of the rotor core. After clamping, a marking liquid is injected into the sealed space. The pressure detection value after filling with the marking liquid is then detected by a pressure sensor, and an alarm threshold is set according to the pressure detection value, so that an alarm can be issued in time when the fastener is loose. The clamping tool 5 can be quickly replaced to adapt to different types of rotor cores.

[0024] The third implementation method: Figure 1-7 As shown, it also includes an auxiliary clamping system, which includes a processor, and the processor is connected to a control module, a monitoring module, a data processing module and a data storage module; The control module is used to receive and process data from the monitoring module, and automatically control the clamping installation mechanism 3 according to the preset algorithm and logic. Through the connection with the motor, electric guide rail and other equipment, the control module can realize the precise adjustment of the position, pressure and rotation angle of the clamping tooling.

[0025] The monitoring module is used to monitor and collect the working status data of the clamping tool in real time, including parameters such as clamping force, clamping position, and temperature. It collects data in real time and transmits it to the control module through connection with pressure sensors, temperature sensors and other equipment; during the injection of marking liquid, the monitoring module can also monitor the pressure changes of the pressure sensor to ensure that the filling amount of marking liquid meets the requirements.

[0026] The data processing module is used to process and analyze the data collected by the monitoring module, and determine whether the clamping tooling is loose or has other abnormal conditions according to the preset alarm threshold. When an abnormal condition is detected, the data processing module will send a command to the control module to trigger the alarm mechanism.

[0027] The data storage module is used to store the data collected by the monitoring module and the results calculated by the processing module.

[0028] The control module realizes precise control of the position and clamping pressure of the clamping tool 5 by connecting to the motor and electric guide rails. The monitoring module monitors the working status of the clamping process in real time by connecting to the pressure sensor and temperature sensor. The data processing module receives the data from the monitoring module, processes and analyzes it, and determines whether the clamping tool is loose or has other abnormal conditions. When an abnormal condition is detected, the data processing module sends a command to the control module to trigger the alarm mechanism.

[0029] The third implementation method: Figure 8 It is shown that the specific use method of the magnetic bearing rotor core clamping device includes: A1, install the clamping tool 5, clamp the clamping tool 5 with a pair of clamping blocks 33, and use the electric guide rail to adjust the position of the clamping blocks 33 to ensure that the pressure ring body 51 is aligned with the tooling ring 12; start the pressure device through the control box 31, drive the pressure plate 32 to press down, so that the elastic rubber layer 52 contacts the tooling ring 12 to form a preliminary compression; A2, sealed space construction and marking liquid injection; adjust the position of the clamp block 33 so that the nozzle position matches and docks with the air hole position; then the nozzle injects the marking liquid into the air hole through the infusion tube to fill the sealed space between the piston cover 63 and the sealing cover 53 until the pressure detection value reaches the set value; Then adjust the position of the clamp block 33 so that the heater matches the position of the air hole, and heat the hot melt tube 54 through the heater to melt it; The clamp block 33 is reset, and then the rotating rotor core body 1 is driven to rotate by a set angle, and then the above work is repeated until the multiple sealed spaces are filled with the marking liquid; A3, pressing and adjusting, start the motor to drive the rotating arm 4 to rotate to a set angle, then turn on the pressurizing device, so that the pressing block 43 applies uniform pressure to the position of the sealing space; at this time, detect the change of the pressure detection value. If the pressure detection value changes to outside the set value range, the sealing cover 53 is rotated by controlling the regulating head 45 to adjust the position of the sealing cover 53, thereby adjusting the hydraulic pressure in the sealing space to within the set range; A4, insert the protective gasket covering the sealing cover 53 into the opening of the through hole to complete the compression installation; when the equipment is in use, remove the protective gasket, and then connect the pressure sensor to monitor the sealed space during use.

[0030] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A magnetic bearing rotor core clamping device, comprising a workbench and a rotor core body (1), wherein a rotating table matching the rotor core body (1) is mounted on the workbench, wherein the rotor core body (1) comprises a housing (11), wherein a core group is mounted in the housing (11), and a tooling ring (12) is mounted on the core group, wherein: A bracket (2) is fixedly connected to the workbench, and a clamping installation mechanism (3) for installing a clamping tool (5) is installed on the bracket (2); The clamping installation mechanism (3) comprises a control box (31), a pressurizing device is installed in the control box (31), a movable end of the pressurizing device is fixedly connected to a pressurizing plate (32), and the lower end of the pressurizing plate (32) is connected to a pair of clamping blocks (33) via an electric guide rail; A mounting hole is provided in the middle of the pressure plate (32), a rotating arm (4) is rotatably connected in the mounting hole, the rotating arm (4) comprises a main arm plate (41), a motor matching the main arm plate (41) is installed in the control box (31), a telescopic shaft is connected between the power output end of the motor and the main arm plate (41); the lower end of the main arm plate (41) is connected to a pair of movable platforms (42) via electric slide rails, and the lower end of the movable platform (42) is fixedly connected to a pressure block (43); The clamping tool (5) comprises a pressing ring body (51), the lower end of which is provided with an elastic rubber layer (52), the lower end of which is provided with a plurality of evenly distributed through holes, the openings of which are clamped with sealing covers (53), and the side end of which is provided with air holes communicating with the through holes, wherein a hot melt tube (54) is inserted into the air holes; An early warning unit (6) is provided between the clamping tool (5) and the housing (11), the early warning unit (6) comprising a hollow bolt (61), the hollow bolt (61) passing through the tool ring (12) and being threadedly connected to the housing (11), a positioning column (62) being inserted into the middle of the hollow bolt (61), the two ends of the positioning column (62) being respectively connected to the housing (11) and the sealing cover (53), the top end of the hollow bolt (61) being fixedly connected to a piston cover (63) matching the through hole, a sealed space being formed between the piston cover (63) and the sealing cover (53), the sealed space being filled with a marking liquid.

2. The magnetic bearing rotor core clamping device according to claim 1, characterized in that: A cross slot is formed at the top of the sealing cover (53), and a wiring plug matching the pressure sensor is installed in the middle of the cross slot. An auxiliary motor (44) is fixedly connected to the pressing block (43), and a power output end of the auxiliary motor (44) is connected to an adjusting head (45) matching the sealing cover (53) via an electric extension rod.

3. The magnetic bearing rotor core clamping device according to claim 2, characterized in that: A pair of mounting grooves are provided on the inner wall of the clamping block (33), a heater and an infusion tube are respectively installed in the pair of mounting grooves, a nozzle matching the air hole is installed at the output end of the infusion tube, a joint is installed at the upper end of the pressure plate (32), and the joint is connected to the nozzle through the infusion tube.

4. The magnetic bearing rotor core clamping device according to claim 3, characterized in that: A pressure sensor is installed in the sealing cover (53), and a detection end of the pressure sensor is located in the through hole.

5. The magnetic bearing rotor core clamping device according to claim 4, characterized in that: The marking fluid comprises a colored liquid and a colored sealing oil.

6. The magnetic bearing rotor core clamping device according to claim 5, characterized in that: The hot-melt tube (54) comprises an outer tube and an inner tube, the outer tube is made of a heat-resistant material and is clamped to the inner wall of the pore, the inner tube is made of a hot-melt material, and the melting temperature of the inner tube is 60 degrees Celsius.

7. The magnetic bearing rotor core clamping device according to claim 6, characterized in that: It also includes an auxiliary clamping system, which includes a processor, and the processor is connected to a control module, a monitoring module, a data processing module and a data storage module; The control module is used to receive and process data from the monitoring module and automatically control the pressing and installing mechanism (3) according to a preset algorithm and logic; The monitoring module is used to monitor and collect working status data of the pressing tool in real time; The data processing module is used to process and analyze the data collected by the monitoring module, and determine whether the clamping tool is loose or has other abnormal conditions according to the preset alarm threshold; The data storage module is used to store the data collected by the monitoring module and the results calculated by the processing module.

8. A method for using the magnetic bearing rotor core clamping device according to claim 7, characterized in that: Specific usage methods include: A1, installing the clamping tool (5), clamping the clamping tool (5) with a pair of clamping blocks (33), and adjusting the position of the clamping blocks (33) by using an electric guide rail to ensure that the pressing ring body (51) is aligned with the tooling ring (12); starting the pressure device through the control box (31), driving the pressure plate (32) to press down, so that the elastic rubber layer (52) and the tooling ring (12) are in contact to form a preliminary compression; A2, construction of a sealed space and injection of a marking liquid; adjusting the position of the clamping block (33) so that the position of the nozzle matches and connects with the position of the air hole; then the nozzle injects the marking liquid into the air hole through the infusion tube to fill the sealed space between the piston cover (63) and the sealing cover (53) until the pressure detection value reaches the set value; The position of the clamp (33) is then adjusted so that the heater matches the position of the air hole, and the hot melt tube (54) is heated by the heater to melt it; The clamping block (33) is reset, and then the rotating rotor core body (1) is driven to rotate by a set angle, and the above steps are repeated until the multiple sealed spaces are filled with the marking liquid; A3, pressing and adjusting, starting the motor to drive the rotating arm (4) to rotate to a set angle, then turning on the pressure device, so that the pressure block (43) applies uniform pressure to the position of the sealing space; at this time, detecting the change of the pressure detection value, if the pressure detection value changes to outside the set value range, then controlling the adjustment head (45) to work, so that the sealing cover (53) rotates to adjust the position of the sealing cover (53), thereby adjusting the hydraulic pressure in the sealing space to within the set range; A4, insert the protective gasket covering the sealing cover (53) into the opening of the through hole to complete the compression installation; when the device is used, remove the protective gasket, and then connect the pressure sensor to monitor the sealing space during use.

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