A pressure sensor air tightness detection device

Abstract

The present invention discloses a pressure sensor air tightness detection device, and the present invention relates to the field of sensor air tightness detection technology. The pressure sensor air tightness detection device comprises a bearing platform and an L-shaped frame fixedly connected to the upper end face of the bearing platform, the upper end face of the bearing platform is fixedly connected with an annular platform, a self-clamping placement part for placing multiple pressure sensors equidistantly in the circumferential direction is installed on the annular platform, a booster part is installed at the lower part of the transverse section of the L-shaped frame, the booster part comprises a columnar cylinder, a multi-stage synchronous connection mechanism comprises a plurality of connecting telescopic rods fixedly connected to the upper end face of the bearing platform equidistantly in the circumferential direction through a fixed plate, one end of the connecting rod group away from the rectangular frame is hinged with the multi-stage connection component, and a limiting block for limiting the connecting rod group is fixedly connected to the side of the rectangular frame away from the columnar cylinder. The present invention can simultaneously connect multiple pressure sensors, and can also perform multi-stage connection and compression on the pressure sensors, simplifying the connection steps and facilitating continuous detection of the pressure sensors.

Description

Technical Field

[0001] The invention relates to the technical field of air tightness detection of sensors, and in particular to an air tightness detection device for a pressure sensor. Background Art

[0002] A pressure sensor is a sensor used to measure the pressure of liquid or gas. They usually convert pressure into a measurable electrical signal, which can be used to monitor and control pressure changes in various systems. Pressure sensors play an important role in many industrial applications, such as automobiles, medical equipment, industrial automation, aerospace and other fields. The air tightness test of pressure sensors is an important link to ensure that the sensor can operate reliably under different pressure conditions. The main purpose of the air tightness test is to confirm that the sensor and its housing have no leaks and can maintain its performance in the expected operating environment.

[0003] Currently, existing air tightness testing equipment usually uses a connection method of manually rotating the threads on the pressure sensor when testing and connecting the pressure sensor. However, this connection method is cumbersome to operate when continuously testing multiple pressure sensors, and can only be connected to one pressure sensor at a time, which affects the batch testing speed of the pressure sensors. Summary of the invention

[0004] The present invention provides a pressure sensor air tightness detection device, which solves the technical problems that the existing connection method for air tightness detection of pressure sensors is mostly spiral connection, which is cumbersome and time-consuming for continuous detection of multiple pressure sensors, and can only be connected to one pressure sensor at a time, affecting the batch detection speed of pressure sensors.

[0005] The present invention provides a pressure sensor air tightness detection device, comprising a bearing platform and an L-shaped frame fixedly connected to the upper end surface of the bearing platform, wherein the upper end surface of the bearing platform is fixedly connected to an annular platform, and a self-clamping placement part for placing a plurality of pressure sensors equidistantly in the circumferential direction is installed on the annular platform, and a booster part is installed at the lower part of the transverse section of the L-shaped frame, and a multi-stage synchronous connection mechanism for quickly and simultaneously connecting with a plurality of pressure sensors in multiple stages is installed on the booster part and the bearing platform, wherein the booster part comprises a columnar cylinder, and the multi-stage synchronous connection mechanism comprises a plurality of fixed plates equidistantly fixed to the upper end surface of the bearing platform in the circumferential direction. A connecting telescopic rod is arranged on the surface, a multi-stage connecting component is installed at one end of the connecting telescopic rod away from the fixed plate, and a connecting component for pushing the multi-stage connecting component to move simultaneously so as to connect with the pressure sensor at the same time is arranged on the outside of the cylindrical tube and the multi-stage connecting component, the connecting component includes a rectangular frame fixedly connected to the outside of the cylindrical tube through a connecting column, a plurality of connecting rod groups corresponding to the multi-stage connecting component are hingedly connected to the outside of the rectangular frame at equidistant intervals in the circumferential direction, the end of the connecting rod group away from the rectangular frame is hinged to the multi-stage connecting component, and a limit block for limiting the connecting rod group is fixedly connected to the side of the rectangular frame away from the cylindrical tube.

[0006] In a possible implementation, the multi-stage connecting component includes an outer fitting part arranged at the end of the telescopic rod and a docking part arranged inside the outer fitting part, the outer fitting part includes a sleeve fixedly connected to the end of the telescopic rod, the sleeve is fixedly connected to an elastic sealing ring on a side away from the telescopic rod, and a plurality of elastic arc-shaped clamping plates sleeved on the outside of the elastic sealing ring are fixedly connected to the side of the sleeve away from the telescopic rod at circumferentially equidistant intervals, the outer wall of the elastic arc-shaped clamping plate is fixedly connected to a wedge plate, the outside of the sleeve is slidably connected to a slip ring for cooperating with the wedge plate, and the connecting rod group is hinged to the outside of the slip ring.

[0007] In a possible implementation, the docking piece includes an elastic tube slidably connected to the inside of the sleeve, a plurality of strip grooves are equidistantly provided on the outside of the elastic tube in the circumferential direction, a plurality of fixed blocks corresponding to the strip grooves are equidistantly fixedly connected to the circumferential inner wall of the sleeve, a top spring is fixedly connected between the fixed blocks and the strip grooves, an annular groove is provided on the side of the elastic tube away from the telescopic rod, and the circumferential groove wall on the side close to the axis is conical.

[0008] In a possible implementation, one end of the elastic tube close to the columnar tube is connected to a flexible connecting tube, and one end of the flexible connecting tube close to the columnar tube is connected to the columnar tube.

[0009] In a possible implementation, the booster part also includes an electric telescopic rod fixedly connected to the lower end surface of the transverse section of the L-shaped frame, the lower end of the electric telescopic rod is symmetrically fixedly connected to the spring telescopic rod through a cross bar, the cylindrical tube is fixedly connected to the lower end of the spring telescopic rod, a top plug is slidably connected inside the cylindrical tube, the upper part of the top plug is fixedly connected to the top rod, and the lower part of the top plug is fixedly connected to a plurality of arc-shaped plugging pieces corresponding to the flexible connecting pipe at equidistant intervals around the circumference.

[0010] In a possible implementation, the self-clamping placement portion includes a ring frame fixedly connected to an annular table by a support, and two concentrically arranged annular vertical plates are fixedly connected to the upper end surface of the ring frame. A plurality of notch-shaped placement grooves for placing pressure sensors are circumferentially equidistantly provided on the two annular vertical plates, and a plurality of clamping assemblies corresponding to the notch-shaped placement grooves are circumferentially equidistantly provided on the ring frame, and a pull-down assembly for driving the clamping assembly to operate is installed at the lower part of the ring frame.

[0011] In one possible implementation, the clamping assembly includes a spring telescopic column that is symmetrically fixedly connected to the ring frame through a support plate and is located at a notch-shaped placement groove, the proximal ends of the two spring telescopic columns are fixedly connected with an arc-shaped clip, the side of the support plate is hinged with a top touch plate, and the side of the arc-shaped clip close to the top touch plate is fixedly connected with a stop block.

[0012] In one possible implementation, the pull-down assembly includes a plurality of pull columns that are circumferentially equidistantly penetrate and are slidably connected to the ring frame and correspond to the top contact rods, the upper ends of the pull columns are fixedly connected to a U-shaped frame, the sides of the top contact plate are provided with sliding grooves, the opposite sides of the vertical sections of the U-shaped frame are fixedly connected to sliding columns that are slidably arranged in the sliding grooves, the lower ends of the pull columns are commonly fixedly connected to an annular plate, the circumferential inner wall of the annular plate is fixedly connected to a cross beam, the upper end surface of the cross beam and located directly below the columnar tube is slidably connected to a pressure block through a compression spring.

[0013] It can be seen from the above technical solutions that the present invention has the following advantages:

[0014] In the present invention, a plurality of multi-stage connection components are pushed and connected with a plurality of circumferentially arranged pressure sensors at the same time through the combination of a rectangular frame and a connecting rod group, so that the connection of a plurality of pressure sensors can be detected at a time, thereby speeding up the continuous detection speed of the pressure sensors.

[0015] In the present invention, the elastic tube in the multi-stage connecting component is matched and abutted against the port of the pressure sensor, and then the elastic sealing ring is movably sleeved on the outside of the joint between the elastic tube and the pressure sensor, thereby quickly completing the connection with the pressure sensor and performing multi-stage connection at the same time, which greatly enhances the sealing performance of the connection with the pressure sensor.

[0016] In the present invention, a plurality of pressure sensors are arranged circumferentially and concentrically with the pressurizing part, and then the connection points are pressed at multiple levels during the process of simultaneously connecting the pressure sensors, thereby improving the stability of the pressure sensors when connected.

[0017] In the present invention, the boosting part cooperates with the self-clamping placement part while operating to simultaneously drive multiple pairs of arc-shaped clamps to move closer to each other, thereby automatically clamping and limiting multiple pressure sensors in placement at the same time, thereby ensuring the stability of the pressure sensors during detection.

[0018] In the present invention, by combining the operation steps of placing, clamping and limiting, docking and connecting, and multi-stage connecting and pressing the pressure sensor together, the time for detecting the pressure sensor is greatly shortened and the continuous detection speed of the pressure sensor is accelerated. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0020] Figure 1 This is a schematic structural diagram of the pressure sensor air tightness detection device provided by the present invention.

[0021] Figure 2 This is a schematic diagram of the connection structure between the boosting unit and the multi-stage synchronous communication mechanism provided by the present invention.

[0022] Figure 3 This is a schematic cross-sectional structure diagram of the multi-stage synchronous communication mechanism provided by the present invention.

[0023] Figure 4 This is a partial structural schematic diagram of the multi-stage synchronous communication mechanism provided by the present invention.

[0024] Figure 5 This is a schematic cross-sectional structure diagram of a multi-stage connected component provided by the present invention.

[0025] Figure 6 This is a schematic cross-sectional view of a partial structure of the self-clamping placement portion provided by the present invention.

[0026] Figure 7 The present invention provides Figure 6 Schematic diagram of the enlarged structure of part A in the figure.

[0027] Figure 8 This is a schematic cross-sectional structure diagram of the supercharging part provided by the present invention.

[0028] The above drawings include the following reference numerals:

[0029] 1. Loading platform; 2. L-shaped frame; 3. Ring-shaped platform; 4. Self-clamping placement part; 41. Ring frame; 42. Ring vertical plate; 43. Notch-shaped placement groove; 44. Clamping assembly; 441. Spring telescopic column; 442. Arc-shaped clip; 443. Top contact plate; 444. Stop block; 45. Pull-down assembly; 451. Pull column; 452. U-shaped frame; 453. Sliding groove; 454. Sliding column; 455. Ring plate; 456. Crossbeam; 457. Pressure block; 5. Pressurization part; 51. Columnar tube; 52. Electric telescopic rod; 53. Spring telescopic rod; 5 4. Ejector plug; 55. Ejector rod; 56. Arc-shaped plug; 6. Multi-stage synchronous connecting mechanism; 61. Connecting telescopic rod; 62. Multi-stage connecting component; 621. Outer casing; 6211. Sleeve; 6212. Elastic sealing ring; 6213. Elastic arc-shaped clamp; 6214. Wedge plate; 6215. Slip ring; 622. Butt joint; 6221. Elastic tube; 6222. Strip groove; 6223. Ejector spring; 6224. Annular groove; 63. Same connection component; 631. Rectangular frame; 632. Connecting rod group; 633. Limit block; 7. Flexible connecting pipe. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0031] See also Figure 1 The present invention provides a technical solution: a pressure sensor air tightness detection device, comprising a carrier platform 1 and an L-shaped frame 2 fixedly connected to the upper end surface of the carrier platform 1, the upper end surface of the carrier platform 1 is fixedly connected to an annular platform 3, the annular platform 3 is equipped with a self-clamping placement part 4 for placing multiple pressure sensors equidistantly in the circumferential direction, a boosting part 5 is installed at the lower part of the transverse section of the L-shaped frame 2, and a multi-stage synchronous connection mechanism 6 for quickly and simultaneously connecting with multiple pressure sensors in multiple stages is installed on the boosting part 5 and the carrier platform 1.

[0032] See also Figure 2 and Figure 8In this embodiment, the booster part 5 includes an electric telescopic rod 52 fixedly connected to the lower end surface of the transverse section of the L-shaped frame 2, the lower end of the electric telescopic rod 52 is symmetrically fixedly connected to the spring telescopic rod 53 through a cross bar, the lower end of the spring telescopic rod 53 is fixedly connected to a columnar tube 51, the inside of the columnar tube 51 is slidably connected to a top plug 54, the upper part of the top plug 54 is fixedly connected to a top rod 55, and the lower part of the top plug 54 is fixedly connected to a plurality of arc-shaped plugging pieces 56 at equal intervals on the circumference.

[0033] See also Figure 2 , Figure 3 and Figure 4 In this embodiment, the multi-stage synchronous communication mechanism 6 includes a plurality of connecting telescopic rods 61 fixedly connected to the upper end surface of the supporting platform 1 at equal intervals in the circumferential direction through a fixing plate, a multi-stage communication component 62 is installed on the end of the connecting telescopic rod 61 away from the fixing plate, and a connecting component 63 for pushing the multi-stage communication component 62 to move simultaneously so that it can be connected with the pressure sensor at the same time is arranged on the outside of the columnar tube 51 and the multi-stage communication component 62. The connecting component 63 includes a rectangular frame 631 fixedly connected to the outside of the columnar tube 51 through a connecting column, and a plurality of connecting rod groups 632 corresponding to the multi-stage communication component 62 are hingedly connected to the outside of the rectangular frame 631 at equal intervals in the circumferential direction, and one end of the connecting rod group 632 away from the rectangular frame 631 is hinged to the multi-stage communication component 62, and a limiting block 633 for limiting the connecting rod group 632 is fixedly connected to the side of the rectangular frame 631 away from the columnar tube 51.

[0034] See also Figure 3 , Figure 4 and Figure 5The multi-stage connecting component 62 includes an outer sleeve 621 disposed at the end of the connecting telescopic rod 61 and a docking component 622 disposed inside the outer sleeve 621. The outer sleeve 621 includes a sleeve 6211 fixedly connected to the end of the connecting telescopic rod 61. The sleeve 6211 is fixedly connected to an elastic sealing ring 6212 on one side away from the connecting telescopic rod 61. The sleeve 6211 is fixedly connected to a plurality of elastic arc-shaped clamping plates 6213 sleeved on the outside of the elastic sealing ring 6212 at equidistant intervals in the circumferential direction on one side away from the connecting telescopic rod 61. The outer wall of the elastic arc-shaped clamping plate 6213 is fixedly connected to a wedge plate 6214. The sleeve 6211 is slidably connected to a slip ring 6215 for cooperating with the wedge plate 6214 on the outside. The connecting rod group 632 Hinge-connected to the outside of the slip ring 6215, the docking piece 622 includes an elastic tube 6221 slidably connected to the inside of the sleeve 6211, a plurality of strip grooves 6222 are equidistantly provided on the outside of the elastic tube 6221, a plurality of fixed blocks corresponding to the strip grooves 6222 are equidistantly fixedly connected to the circumferential inner wall of the sleeve 6211, a top spring 6223 is fixedly connected between the fixed blocks and the strip grooves 6222, an annular groove 6224 is provided on the side of the elastic tube 6221 away from the telescopic rod 61, the circumferential groove wall of the annular groove 6224 on the side close to the axis is conical, the end of the elastic tube 6221 close to the cylindrical tube 51 is connected to the flexible connecting tube 7, and the end of the flexible connecting tube 7 close to the cylindrical tube 51 is connected to the cylindrical tube 51.

[0035] A plurality of pressure sensors to be detected are arranged circumferentially and placed in the self-clamping placement part 4 in sequence, and then the electric telescopic rod 52 is controlled to extend to push the spring telescopic rod 53 downward, and the spring telescopic rod 53 then drives the columnar tube 51 downward, and the columnar tube 51 drives the rectangular frame 631 downward, and the rectangular frame 631 pushes the connecting rod to gradually tilt during the downward movement, and the connecting rod pushes the multi-stage connecting component 62 to move away from the center of the annular table 3 during the movement, until the multi-stage connecting component 62 hits the pressure sensor port, and then the connecting rod continues to push the slip ring 6215 to move, and the slip ring 6215 then hits the inclined surface of the wedge plate 6214 and drives the sleeve 6211 to move as a whole, and the sleeve 6211 then pushes the elastic tube 6221 to move through the top spring 6223, and the elastic tube 62 21 moves, and then the annular groove 6224 is sleeved against the port of the pressure sensor, so that the elastic tube 6221 is connected with the port of the pressure sensor, and then the connecting rod continues to push the slip ring 6215 to move, and the movement of the slip ring 6215 pushes the sleeve 6211 to move, until the sleeve 6211 drives the elastic sealing ring 6212 to move to the external position of the connection between the elastic tube 6221 and the pressure sensor, and then the slip ring 6215 moves and squeezes with the inclined surface of the wedge plate 6214 to cause the elastic arc clamping plate 6213 to deform and shrink. During the shrinking process of the elastic arc clamping plate 6213, the elastic sealing ring 6212 is squeezed to shrink, so that the elastic sealing ring 6212 is tightly wrapped around the outside of the connection between the elastic tube 6221 and the pressure sensor, thereby repeatedly enhancing the sealing when connected with the pressure sensor.

[0036] After the multi-stage connecting assembly 62 is fully connected with the pressure sensor, the connecting rod becomes horizontal and contacts with the limit block 633, the cylindrical tube 51 stops moving downward, the electric telescopic rod 52 continues to extend and drives the cross bar to move downward and contact with the push rod 55, the push rod 55 is then pushed downward, and the push rod 55 then drives the pressure plug to move downward. During the downward movement of the pressure plug, the gas in the cylindrical tube 51 is pressed into the flexible connecting pipe 7, then into the elastic tube 6221, and finally into the pressure sensor. When the pressure plug moves down to the bottom of the cylindrical tube 51 cavity, all the gas in the cylindrical tube 51 is pressed into the pressure sensor. At this time, the pressure plug also drives the arc plug 56 to move downward and contact the port position at the connection point between the flexible connecting pipe 7 and the cylindrical tube 51, so as to separate the flexible connecting pipe 7 from the cylindrical tube 51, so that the pressure sensor always maintains a high pressure state. Finally, the air tightness of the pressure sensor can be detected by observing whether the value of the pressure sensor changes.

[0037] See also Figure 2 , Figure 3 and Figure 6In this embodiment, the self-clamping placement part 4 includes a ring frame 41 fixedly connected to the annular table 3 through a support, and two concentrically arranged annular vertical plates 42 are fixedly connected to the upper end surface of the ring frame 41. A plurality of notch-shaped placement grooves 43 for placing pressure sensors are equidistantly provided on the two annular vertical plates 42 in the circumferential direction, and a plurality of clamping components 44 corresponding to the notch-shaped placement grooves 43 are equidistantly provided on the ring frame 41 in the circumferential direction, and a pull-down component 45 for driving the clamping component 44 to operate is installed at the lower part of the ring frame 41.

[0038] See also Figure 3 , Figure 6 and Figure 7 The clamping assembly 44 includes spring telescopic columns 441 which are symmetrically fixedly connected to the ring frame 41 through a support plate and located at the notch-shaped placement groove 43. The proximal ends of the two spring telescopic columns 441 are fixedly connected with arc-shaped clips 442. A top touch plate 443 is hinged on the side of the support plate. A stop block 444 is fixedly connected to the side of the arc-shaped clip 442 close to the top touch plate 443.

[0039] See also Figure 3 and Figure 6 The pull-down assembly 45 includes a plurality of pull columns 451 which are circumferentially equidistantly penetrated and slidably connected to the ring frame 41 and correspond to the top contact rods. The upper end of the pull column 451 is fixedly connected to a U-shaped frame 452. A sliding groove 453 is provided on the side of the top contact plate 443. A sliding column 454 which is slidably arranged in the sliding groove 453 is fixedly connected to the opposite side of the vertical section of the U-shaped frame 452. The lower ends of the pull columns 451 are fixedly connected to an annular plate 455. A crossbeam 456 is fixedly connected to the circumferential inner wall of the annular plate 455. A pressure block 457 is slidably connected to the upper end surface of the crossbeam 456 and is located directly below the columnar tube 51 through a compression spring.

[0040] When testing the pressure sensor, it will be placed in the notch-shaped placement groove 43 in sequence to be arranged circumferentially. When the booster part 5 runs and the columnar tube 51 moves downward, the self-clamping placement part 4 will be triggered to run synchronously. During the downward movement of the columnar tube 51, it will contact the pressure block 457 and push the pressure block 457 to move downward synchronously. The pressure block 457 then pushes the cross connecting rod downward through the compression spring, and the cross beam 456 then drives the annular plate 455 downward. The downward movement of the annular plate 455 drives the pull column 451 downward, and the pull column 451 then drives the sliding column 454 downward through the U-shaped frame 452 The sliding column 454 then pulls the top contact plate 443 to rotate around the support plate. During the rotation of the top contact plate 443, the end of the top contact plate 443 close to the arc-shaped clip 442 will abut against the outer arc surface of the arc-shaped clip 442, and squeeze the outer arc surface of the arc-shaped clip 442 so that the two corresponding arc-shaped clips 442 move closer to each other until the arc-shaped clips 442 abut against the outside of the pressure sensor. At this time, the top contact plate 443 also rotates to abut against the stop block 444, so that the pressure sensor being placed can be clamped and limited, thereby ensuring the stability of the pressure sensor when placed.

[0041] During operation, firstly, multiple pressure sensors are arranged circumferentially equidistantly and placed in the self-clamping placement part 4, and then the boosting part 5 is controlled to operate. During the operation of the boosting part 5, the multi-stage synchronous connecting mechanism 6 and the self-clamping placement part 4 are triggered respectively. When the multi-stage synchronous connecting mechanism 6 is in operation, it automatically connects with multiple pressure sensors at the same time, which simplifies the connection steps. At the same time, multi-stage sealing connection can be performed, which greatly enhances the sealing strength of the pressure sensor connection. When the self-clamping placement part 4 is in operation, it automatically clamps and limits the pressure sensor in place to ensure its stability during placement. During the operation of the boosting part 5, the gas inside it is gradually pressed into the pressure sensor. Finally, by observing the numerical changes of the pressure sensor, it can be detected whether its air tightness is qualified.

[0042] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0043] In addition, the terms "first", "second", "number one", "number two" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "number one", "number two" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure sensor air tightness detection device, comprising a support platform (1) and an L-shaped frame (2) fixedly connected to the upper end surface of the support platform (1), characterized in that: The upper end surface of the bearing platform (1) is fixedly connected to an annular platform (3), and a self-clamping placement portion (4) for placing a plurality of pressure sensors equidistantly in the circumferential direction is installed on the annular platform (3); a booster portion (5) is installed at the lower part of the transverse section of the L-shaped frame (2), and a multi-stage synchronous communication mechanism (6) for quickly and simultaneously performing multi-stage communication with a plurality of pressure sensors is installed on the booster portion (5) and the bearing platform (1); The pressurizing unit (5) comprises a cylindrical tube (51); The multi-stage synchronous communication mechanism (6) comprises a plurality of connecting telescopic rods (61) fixedly connected to the upper end surface of the support platform (1) at equal intervals in the circumferential direction through a fixing plate, a multi-stage communication component (62) is installed at one end of the connecting telescopic rod (61) away from the fixing plate, and a connecting component (63) for pushing the multi-stage communication component (62) to move simultaneously so as to make it communicate with the pressure sensor simultaneously is arranged on the outside of the columnar tube (51) and the multi-stage communication component (62); The connecting component (63) comprises a rectangular frame (631) fixedly connected to the outside of the columnar tube (51) through a connecting column, a plurality of connecting rod groups (632) corresponding to the multi-stage connecting component (62) are hingedly connected to the outside of the rectangular frame (631) at equal intervals in the circumferential direction, one end of the connecting rod group (632) away from the rectangular frame (631) is hingedly connected to the multi-stage connecting component (62), and a limiting block (633) for limiting the position of the connecting rod group (632) is fixedly connected to the side of the rectangular frame (631) away from the columnar tube (51); The multi-stage connecting component (62) comprises an outer sleeve (621) arranged at the end of the connecting telescopic rod (61) and a docking component (622) arranged inside the outer sleeve (621), wherein the outer sleeve (621) comprises a sleeve (6211) fixedly connected to the end of the connecting telescopic rod (61), wherein the sleeve (6211) is fixedly connected to an elastic sealing ring (6212) on a side away from the connecting telescopic rod (61), and the sleeve (6211) is further away from the connecting telescopic rod (61). A plurality of elastic arc-shaped clamping plates (6213) sleeved on the outside of the elastic sealing ring (6212) are fixedly connected to one side of the connecting telescopic rod (61) at equal distances in the circumferential direction; a wedge-shaped plate (6214) is fixedly connected to the outer wall of the elastic arc-shaped clamping plate (6213); a slip ring (6215) for cooperating with the wedge-shaped plate (6214) is slidably connected to the outside of the sleeve (6211); and the connecting rod group (632) is hinged to the outside of the slip ring (6215); The docking member (622) comprises an elastic tube (6221) slidably connected to the inside of the sleeve (6211); a plurality of strip grooves (6222) are equidistantly provided on the outside of the elastic tube (6221); a plurality of fixed blocks corresponding to the strip grooves (6222) are equidistantly fixedly connected to the circumferential inner wall of the sleeve (6211); a top spring (6223) is fixedly connected between the fixed blocks and the strip grooves (6222); an annular groove (6224) is provided on the side of the elastic tube (6221) away from the telescopic rod (61); and the circumferential groove wall of the annular groove (6224) on the side close to the axis is conical.

2. A pressure sensor air tightness detection device according to claim 1, characterized in that: One end of the elastic tube (6221) close to the columnar tube (51) is connected to a flexible connecting tube (7), and one end of the flexible connecting tube (7) close to the columnar tube (51) is connected to the columnar tube (51).

3. A pressure sensor air tightness detection device according to claim 2, characterized in that: The booster section (5) further comprises an electric telescopic rod (52) fixedly connected to the lower end surface of the transverse section of the L-shaped frame (2); the lower end of the electric telescopic rod (52) is symmetrically fixedly connected to a spring telescopic rod (53) via a transverse rod; the columnar tube (51) is fixedly connected to the lower end of the spring telescopic rod (53); a top plug (54) is slidably connected inside the columnar tube (51); a top rod (55) is fixedly connected to the upper part of the top plug (54); and a plurality of arc-shaped plugging pieces (56) corresponding to the flexible connecting pipe (7) are fixedly connected to the lower part of the top plug (54) at equal intervals around the circumference.

4. The pressure sensor air tightness detection device according to claim 1, characterized in that: The self-clamping placement part (4) comprises a ring frame (41) fixedly connected to the annular platform (3) through a support, the upper end surface of the ring frame (41) is fixedly connected to two concentrically arranged annular vertical plates (42), a plurality of notch-shaped placement grooves (43) for placing pressure sensors are equidistantly provided on the two annular vertical plates (42) in the circumferential direction, a plurality of clamping assemblies (44) corresponding to the notch-shaped placement grooves (43) are equidistantly provided on the ring frame (41), and a pull-down assembly (45) for driving the clamping assembly (44) to operate is installed at the lower part of the ring frame (41).

5. The pressure sensor air tightness detection device according to claim 4, characterized in that: The clamping assembly (44) comprises a spring telescopic column (441) which is symmetrically fixedly connected to the ring frame (41) through a support plate and is located at the notch-shaped placement groove (43); the adjacent ends of the two spring telescopic columns (441) are fixedly connected with an arc-shaped clamping piece (442); the side of the support plate is hinged with a top contact plate (443); and the side of the arc-shaped clamping piece (442) close to the top contact plate (443) is fixedly connected with a stop block (444).

6. A pressure sensor air tightness detection device according to claim 5, characterized in that: The pull-down assembly (45) comprises a plurality of pull columns (451) which are equidistantly circumferentially penetrated and slidably connected to the ring frame (41) and correspond to the top contact rods; the upper ends of the pull columns (451) are fixedly connected to a U-shaped frame (452); a sliding groove (453) is provided on the side of the top contact plate (443); a sliding column (454) which is slidably arranged in the sliding groove (453) is fixedly connected to the opposite side of the vertical section of the U-shaped frame (452); the lower ends of the pull columns (451) are fixedly connected to an annular plate (455); a crossbeam (456) is fixedly connected to the circumferential inner wall of the annular plate (455); and a pressure block (457) is slidably connected to the upper end surface of the crossbeam (456) and located directly below the columnar tube (51) through a compression spring.

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