CN214465229U - Connecting device for pressure sensor detection - Google Patents

Abstract

The utility model provides a pressure sensor detects uses connecting device, be equipped with the execution jar of cavity in including and arrange the piston in the execution jar cavity in, the sealed sliding connection of cavity inner wall of piston and execution jar, the piston is cut apart into the cavity and is held the chamber for the variable sealed pressure chamber of volume and volume is variable, sealed pressure chamber and first voltage source interface intercommunication, hold the chamber and pass through pipeline and second voltage source interface intercommunication. The utility model discloses a sealed pressure chamber lets in pressure medium so that produce hold the fastening force of chamber volume change and press from both sides tightly in order to place the sealed clamp of response end at the pressure sensor who holds in the chamber, pressure sensor's response end and piston up end shape form working pressure chamber to make pressure sensor's response end and the sealed intercommunication of working pressure medium, compare in the loading and unloading mode of the hammering of jumbo size screw thread and multiunit screw thread, this high pressure locking formula connecting device installation is light swift, can realize the automation mechanized operation, played laborsaving efficient effect.

Description

Connecting device for pressure sensor detection

Technical Field

The utility model relates to a pressure sensor among the pressure check-up, the detection technology field detects and uses connecting device.

Background

At present, when a large-volume pressure sensor (high-pressure sensor) performs pressure verification and detection, a large-size thread or a plurality of groups of threads are usually connected with a pressure source in a fastening mode, and the large-size thread or the plurality of groups of threads generate enough fastening acting force so as to meet the sealing requirement of working pressure. In the use, the large-size screw thread often uses the loading and unloading mode of hammering, and the installation is dismantled inconveniently, and produces great noise easily, and is very unsuitable indoor operation, and the loading and unloading process operation of multiunit screw thread is complicated loaded down with trivial details, wastes time and energy.

SUMMERY OF THE UTILITY MODEL

In order to solve the one or more problems, the utility model provides a pressure sensor detects and uses connecting device.

The utility model adopts the following technical scheme:

a pressure sensor detection connecting device, comprising:

the actuating cylinder (1) is provided with a cavity in the cylinder body;

the piston (3) is arranged in the cavity of the execution cylinder (1) and is in sealed sliding connection with the inner wall of the cavity, the piston (3) divides the cavity into a sealed pressure cavity (7) with variable volume and an accommodating cavity (9) with variable volume, and the sealed pressure cavity (7) is used for generating fastening force for changing the volume of the accommodating cavity (9) so as to seal and clamp the sensing end of a pressure sensor arranged in the accommodating cavity (9);

a first pressure source connection (13) which communicates with the sealing pressure chamber (7) via a first line;

and a second pressure source interface (21) which is communicated to the accommodating cavity (9) through a second pipeline and provides detection pressure for the pressure sensor.

In the connecting device for detecting the pressure sensor, the first pipeline is arranged in the piston (3) or the side wall of the actuating cylinder (1); the second line is arranged in the piston (3).

In the connecting device for detecting the pressure sensor, the second pipeline is communicated with a groove (312) arranged on the upper end surface of the piston (3), and the groove (312) is over against the sensing end of the pressure sensor.

In the connecting device for detecting the pressure sensor, the bottom surface of the piston (3) is provided with two stages of annular steps (316) with high outside and low inside, and the annular steps (316) and the inner wall and the inner bottom surface of the cylinder body of the execution cylinder (1) surround to form an annular sealing pressure cavity (7).

In the connecting device for detecting the pressure sensor, the upper part of the execution cylinder (1) is provided with a limiting block (5) which is used for penetrating and abutting against the pressure sensor, the lower part of the limiting block (5) is connected with the upper part of the cylinder body of the execution cylinder (1) in a rotating and nesting mode, and the sensing end of the pressure sensor and the upper end face of the piston (3) are tightly sealed and pressed to form a working pressure cavity (6).

In the connecting device for detecting the pressure sensor, a cylinder body of the actuating cylinder (1) comprises a lower cylinder body (11) and an upper cylinder body (12), and the upper cylinder body (12) and the lower cylinder body (11) are connected and fixed by a plurality of long bolts (15) arranged at intervals along the circumferential direction; an annular groove is arranged in the middle of the inner wall of the upper cylinder body (12) and serves as a limiting ring groove (121), a plurality of arc notches (122) communicated with the limiting ring groove (121) are arranged on the upper portion of the inner wall of the upper cylinder body (12) at equal intervals, and the arc notches (122) are matched with arc protrusions (51) arranged on the periphery of the lower portion of the limiting block (5).

In the connecting device for detecting the pressure sensor, the left side or the right side of each circular arc notch (122) of the upper cylinder body (12) is provided with a stop pin (123), and the lower end of the stop pin (123) extends into a limit ring groove (121) of the upper cylinder body (12).

In the connecting device for detecting the pressure sensor, the top surface of the limiting block (5) is uniformly provided with at least one position mark (53), the top surface of the upper cylinder body (12) is provided with an open position mark (124) and an off position mark (125), the position mark (53) of the limiting block (5) is aligned with the open position mark (124) of the upper cylinder body (12), and the arc bulge (51) of the limiting block (5) is aligned with the arc notch (122) of the upper cylinder body (12); the position mark (53) of the rotated limiting block (5) is aligned with the closing mark (125) of the upper cylinder body (12), and the arc-shaped protrusion (51) is embedded into the limiting ring groove (121).

In the connecting device for detecting the pressure sensor, the edge of the bottom surface of the upper cylinder body (12) extends inwards relative to the inner wall of the lower cylinder body (11) to form an annular piston limiting surface (126), and an annular limiting step (315) is arranged on the periphery of the upper end of the piston (3).

In the connecting device for detecting the pressure sensor, the area of the bottom surface of the lower cylinder body (11) contacted with the sealing pressure cavity (7) is larger than the area of the end surface of the sensing end of the pressure sensor contacted with the working pressure cavity (6), or

The area of the bottom surface of the piston (3) in contact with the sealing pressure chamber (7) is larger than the area of the end surface of the piston (3) of the pressure sensor in contact with the working pressure chamber (6).

In the connecting device for detecting the pressure sensor, the area of the bottom surface of the lower cylinder body (11) contacted with the sealing pressure cavity (7) is three times to ten times of the area of the end surface of the sensing end of the pressure sensor contacted with the working pressure cavity (6), or

The area of the bottom surface of the piston (3) in contact with the sealing pressure chamber (7) is three to ten times larger than the area of the end surface of the piston (3) of the pressure sensor in contact with the working pressure chamber (6).

In the above-described pressure sensor detection connecting device,

the first pressure source interface (13) is communicated with the sealed pressure cavity (7) through a first pipeline to inject pressure liquid medium; the second pressure source interface (21) is communicated with the accommodating cavity (9) through a second pipeline and provides liquid detection pressure for the pressure sensor.

In the connecting device for detecting the pressure sensor, the piston (3) comprises a piston body (31) and a piston rod (32) which are integrally connected, the piston rod (32) penetrates through the bottom of the actuating cylinder (1) and is fixed on a supporting base (2), and the second pipeline penetrates through the piston body (31) and the piston rod (32) and is communicated with a second pressure source interface (21) arranged on the supporting base (2).

The connecting device for detecting the pressure sensor is also provided with a reset mechanism (4), wherein the reset mechanism (4) is of an annular spring structure and is arranged between the supporting base (2) and the bottom of the lower cylinder body (11).

The connecting device for detecting the pressure sensor further comprises at least one positioning pin (8), at least one pin hole (112) is formed in the bottom of the cylinder body of the execution cylinder (1), a positioning hole (24) which is aligned with the pin hole (112) is formed in the top of the supporting base (2), the upper end of the positioning pin (8) is fixedly installed in the pin hole (112), and the lower end of the positioning pin (8) is accommodated in the positioning hole (24) in a sliding mode.

In the connecting device for detecting the pressure sensor, the piston (3) comprises a piston body (31) and a piston rod (32) which are integrally connected, the piston rod (32) penetrates through the bottom of the actuating cylinder (1) and is in sealing sliding connection with a supporting base (2), the supporting base (2) is fixedly connected with the actuating cylinder (1), and the second pipeline penetrates through the piston body (31) and the piston rod (32) and is communicated with a second pressure source interface (21) arranged on the supporting base (2).

The connecting device for detecting the pressure sensor is also provided with a reset mechanism (4), wherein the reset mechanism (4) is of an annular spring structure and is arranged between the support base (2) and the piston (3) or between the bottom of the execution cylinder (1) and the piston (3).

The utility model discloses owing to take above design, have following characteristics:

1) the device of the utility model is characterized in that pressure medium is introduced into a sealing pressure cavity formed between a cylinder body of an execution cylinder and a piston, and the sealing pressure cavity is used for generating fastening force for changing the volume of a containing cavity (namely, the execution cylinder and the piston slide relatively) so as to seal and clamp the sensing end of a pressure sensor placed in the containing cavity; then the sensing end of the pressure sensor and the upper end face of the piston are tightly sealed to form a working pressure cavity, and pressure medium is introduced into the working pressure cavity, because the pressure-bearing area of the fastening pressure is several times of that of the working pressure, the fastening force generated by the smaller fastening pressure on the pressure-bearing surface is greater than the sum of the working pressure and the acting force of the reset mechanism, the fastening pressure ensures that the sensing end of the pressure sensor and the working pressure cavity are reliably sealed; compared with hammering of large-size threads and loading and unloading modes of multiple groups of threads, the high-pressure locking type connecting device is easy and quick to install, can realize automatic operation, and has the effects of labor saving and high efficiency.

2) Through set up two-stage annular step at the piston body bottom surface of piston, when sealed pressure chamber did not let in pressure medium, under canceling release mechanical system's effect, the cylinder body of execution jar is contradicted with the annular step that is located inner periphery that is equipped with on the piston body bottom surface of piston, and the annular step that is located the periphery that is equipped with on the piston body bottom surface encloses with cylinder body inner wall, interior bottom surface and forms sealed pressure chamber to guarantee that initial fastening pressure initial value is greater than canceling release mechanical system's effort.

3) The edge of the bottom surface of the upper cylinder body of the execution cylinder is provided with a piston limiting surface, and is matched with a limiting step arranged on the periphery of the upper end of the piston body, so that the working stroke of the reset mechanism is limited in a normal working range, and the phenomenon that the piston is damaged due to misoperation of applying fastening pressure to the cylinder body or the piston when the limiting block is not placed in the execution cylinder is prevented, and even the execution cylinder and the piston fall off is avoided.

4) The piston is fixed on the supporting base, and the execution cylinder is prevented from rotating relative to the piston by passing through at least one positioning pin between the execution cylinder and the supporting base.

Drawings

Fig. 1 is a schematic structural view of the connection device for detecting a pressure sensor of the present invention;

FIG. 2A is a longitudinal sectional view of the cylinder body of the connecting device for detecting a pressure sensor of the present invention;

FIG. 2B is a top view of the cylinder block;

fig. 3A is a schematic perspective view of a limiting block of the connection device for detecting a pressure sensor according to the present invention;

FIG. 3B is a schematic view of the installation of a stop block;

FIG. 3C is a schematic view of the stopper being disassembled;

fig. 4 is the working state diagram of the connection device for detecting pressure sensor of the present invention.

The main labels are as follows:

01-a pressure sensor;

1-execution cylinder, 11-lower cylinder body, 111-overflow hole, 112-pin hole, 113-piston mounting hole and 114-cylinder body annular groove; 12-an upper cylinder body, 121-a limiting ring groove, 122-an arc notch, 123-a stop pin, 124-an open position mark, 125-an off position mark and 126-a piston limiting surface; 13-a first voltage source interface; 14-long bolt; 15-a first conduit;

2-a support base, 21-a second pressure source interface, 22-a base annular groove, 23-a threaded hole and 24-a positioning hole;

3-piston, 31-piston body, 311-second conduit, 312-groove, 313-first seal, 314-second seal, 315-limit step, 316-annular step; 32-piston rod, 321-third seal;

4-a reset mechanism;

5-a limiting block, 51-a circular arc bulge, 52-an anti-skid bulge and 53-a position mark;

6-working pressure chamber; 7-sealing the pressure chamber; 8-a positioning pin; 9-containing cavity.

Detailed Description

At present, when a large-size pressure sensor (a high-pressure sensor) is used for pressure verification and detection, the large-size threads or the fastening connection mode of multiple groups of threaded parts adopted by a connection pressure source have the defects of complex and tedious operation, inconvenience in disassembly, easiness in noise generation, time and labor waste and the like. In order to solve the problems, the utility model provides a connecting device for pressure sensor detection, the device includes execution cylinder and piston, be equipped with the cavity in the cylinder body of execution cylinder, the piston is arranged in the cavity of cylinder body and with the sealed sliding connection of cavity inner wall, the piston divides the cavity of execution cylinder into variable volume sealed pressure chamber and variable volume holding chamber, sealed pressure chamber and first voltage source interface intercommunication, it is used for producing the fastening force that makes the holding chamber volume change in order to press from both sides tightly the induction end seal of the pressure sensor placed in holding chamber; the second pressure source interface is used for providing detection pressure for the pressure sensor, and the second pressure source interface is communicated with the accommodating cavity through a second pipeline.

The connecting device reliably and hermetically communicates the sensing end of the pressure sensor with the second pressure source by utilizing the difference between the fastening pressure and the working pressure acting on the pressure sensor, namely firstly, a pressure medium is introduced into a sealed pressure cavity formed between a cylinder body of an execution cylinder and a piston body of a piston, so that the volume of an accommodating cavity is changed (the execution cylinder moves relative to the piston in the axial direction) to hermetically clamp the sensing end of the pressure sensor, and the sensing end of the pressure sensor is hermetically communicated with the second pressure source; then, pressure medium is introduced into a working pressure cavity formed between the piston body and the sensing end of the pressure sensor, and as the pressure-bearing area of the fastening pressure is several times of that of the working pressure, the fastening force generated by the smaller fastening pressure on the cylinder body or the pressure-bearing surface of the piston (the fastening force born by the cylinder body is transmitted to the pressure sensor) is greater than the sum of the working pressure and the restoring force of the resetting mechanism, and at the moment, the sensing end of the pressure sensor is still reliably sealed with the working pressure cavity; after the work is finished, after the fastening pressure is released, the execution cylinder or the piston is reset under the restoring force action of the reset mechanism, the pressure acting on the pressure sensor is relieved, and the pressure sensor can be taken out quickly. Compared with hammering of large-size threads and loading and unloading modes of multiple groups of threads, the high-pressure locking type connecting device is easy and quick to install, can realize automatic operation, and has the effects of labor saving and high efficiency.

The following describes the connecting device for pressure sensor detection in detail with reference to the following embodiments and accompanying drawings. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The utility model discloses in each embodiment, first voltage source interface, second voltage source interface are different voltage source interfaces, and first pipeline, second pipeline are different pipelines, and first, second do not refer to precedence order, divide and express to correspond and divide for the differentiation of being convenient for.

An embodiment of the utility model provides a pressure sensor detects uses connecting device, include:

the actuating cylinder 1 is provided with a cavity in the cylinder body;

the piston 3 is arranged in the cavity of the actuating cylinder 1 and is in sealed sliding connection with the inner wall of the cavity, the piston 3 divides the cavity into a sealing pressure cavity 7 with variable volume and an accommodating cavity 9 with variable volume, and the sealing pressure cavity 7 is used for generating fastening force for changing the volume of the accommodating cavity 9 so as to seal and clamp the sensing end of a pressure sensor arranged in the accommodating cavity 9;

a first pressure source connection 13 which communicates with the sealing pressure chamber 7 via a first line;

and a second pressure source interface 21 which is communicated to the accommodating cavity 9 through a second pipeline and provides detection pressure for the pressure sensor.

Optionally, the first pipeline is arranged in the piston 3, or the first pipeline is arranged on the side wall of the actuating cylinder 1;

the second line is arranged in the piston 3.

Optionally, the second path of the tube is communicated with a groove 312 arranged on the upper end surface of the piston 3, and the groove 312 faces the sensing end of the pressure sensor.

Optionally, the bottom surface of the piston 3 is provided with two-stage annular steps 316 with a high outer part and a low inner part, and the annular steps 316 and the inner wall and the inner bottom surface of the cylinder body of the actuating cylinder 1 surround to form an annular sealing pressure chamber 7.

Optionally, the upper portion of the actuating cylinder 1 is provided with a limiting block 5, the limiting block 5 is used for being sleeved and abutted against the pressure sensor, the lower portion of the limiting block 5 is rotatably arranged on the upper portion of the cylinder body of the actuating cylinder 1, and the limiting block and the upper portion of the cylinder body are matched to compress the pressure sensor so as to seal and compress the sensing end of the pressure sensor and the upper end face of the piston 3 to form a working pressure cavity 6.

Optionally, the cylinder body of the actuating cylinder 1 includes a lower cylinder body 11 and an upper cylinder body 12, and the upper cylinder body 12 and the lower cylinder body 11 are connected and fixed by a plurality of long bolts 15 arranged at intervals along the circumferential direction; an annular groove is arranged in the middle of the inner wall of the upper cylinder body 12 and serves as a limiting ring groove 121, a plurality of arc notches 122 communicated with the limiting ring groove 121 are arranged on the upper portion of the inner wall of the upper cylinder body 12 at equal intervals, and the arc notches 122 are matched with the arc protrusions 51 arranged on the periphery of the lower portion of the limiting block 5.

Optionally, a stop pin 123 is disposed on the left side or the right side of each circular arc notch 122 of the upper cylinder 12, and the lower end of the stop pin 123 extends into the limit ring groove 121 of the upper cylinder 12.

Optionally, at least one position mark 53 is uniformly arranged on the top surface of the limiting block 5, an open position mark 124 and an off position mark 125 are arranged on the top surface of the upper cylinder 12, the position mark 53 of the limiting block 5 is aligned with the open position mark 124 of the upper cylinder 12, and the circular arc protrusion 51 of the limiting block 5 is aligned with the circular arc notch 122 of the upper cylinder 12; the position mark 53 of the rotated limiting block 5 is aligned with the closing mark 125 of the upper cylinder body 12, and the arc protrusion 51 is embedded into the limiting ring groove 121.

Optionally, the bottom edge of the upper cylinder 12 extends inward relative to the inner wall of the lower cylinder 11 to form an annular piston limiting surface 126, and an annular limiting step 315 is disposed on the outer periphery of the upper end of the piston 3.

Optionally, the area of the bottom surface of the lower cylinder 11 in contact with the sealing pressure chamber 7 is larger than the area of the end surface of the sensing end of the pressure sensor in contact with the working pressure chamber 6, or

The area of the bottom surface of the piston 3 in contact with the sealing pressure chamber 7 is larger than the area of the end surface of the piston 3 of the pressure sensor in contact with the working pressure chamber 6.

Alternatively, the area of the bottom surface of the lower cylinder 11 in contact with the sealing pressure chamber 7 is three to ten times the area of the end surface of the sensing end of the pressure sensor in contact with the working pressure chamber 6, or

The area of the bottom surface of the piston 3 in contact with the seal pressure chamber 7 is three to ten times larger than the area of the end surface of the piston 3 of the pressure sensor in contact with the working pressure chamber 6.

Optionally, the first pressure source interface 13 injects pressure fluid into the sealed pressure chamber 7 through a first pipe;

the second pressure source port 21 is communicated to the accommodating cavity 9 through a second pipeline to provide liquid detection pressure for the pressure sensor.

According to the above-mentioned embodiment, a connecting device for pressure sensor detection is provided, the piston 3 comprises a piston body 31 and a piston rod 32 which are integrally connected, the piston rod 32 penetrates through the bottom of the actuating cylinder 1 and is fixed on a supporting base 2, and the second pipeline penetrates through the piston body 31 and the piston rod 32 and is communicated with a second pressure source interface 21 arranged on the supporting base 2.

Optionally, a reset mechanism 4 is further provided, and the reset mechanism 4 is of an annular spring structure and is disposed between the support base 2 and the bottom of the lower cylinder 11.

Optionally, the hydraulic cylinder further comprises at least one positioning pin 8, the bottom of the cylinder body of the actuating cylinder 1 is provided with at least one pin hole 112, the top of the support base 2 is provided with a positioning hole 24 aligned with the pin hole 112, the upper end of the positioning pin 8 is fixedly installed in the pin hole 112, and the lower end of the positioning pin 8 is slidably accommodated in the positioning hole 24.

According to the above-mentioned embodiment, a connecting device for pressure sensor detection is provided, in which the piston 3 includes a piston body 31 and a piston rod 32 that are integrally connected, the piston rod 32 penetrates through the bottom of the actuating cylinder 1 and is in sliding sealing connection with a support base 2, the support base 2 is fixedly connected with the actuating cylinder 1, and the second pipeline penetrates through the piston body 31 and the piston rod 32 and is communicated with a second pressure source port 21 that is disposed on the support base 2.

Optionally, a return mechanism 4 is further provided, and the return mechanism 4 is of an annular spring structure and is disposed between the support base 2 and the piston 3, or disposed between the bottom of the actuating cylinder 1 and the piston 3.

The embodiment of the utility model provides a through let in pressure medium in the sealed pressure chamber that forms between the cylinder body of carrying out the jar and the piston, sealed pressure chamber is used for producing the fastening force that makes the holding chamber volume change (namely carrying out jar and piston relative slip) in order to press from both sides tightly the induction end seal of the pressure sensor of placing in holding the intracavity; then the sensing end of the pressure sensor and the upper end face of the piston are tightly sealed to form a working pressure cavity, and pressure medium is introduced into the working pressure cavity, because the pressure-bearing area of the fastening pressure is several times of that of the working pressure, the fastening force generated by the smaller fastening pressure on the pressure-bearing surface is greater than the sum of the working pressure and the acting force of the reset mechanism, the fastening pressure ensures that the sensing end of the pressure sensor and the working pressure cavity are reliably sealed; compared with hammering of large-size threads and loading and unloading modes of multiple groups of threads, the high-pressure locking type connecting device is easy and quick to install, can realize automatic operation, and has the effects of labor saving and high efficiency.

The embodiment of the utility model provides a through set up two-stage annular step in the piston body bottom surface of piston, when sealed pressure chamber did not let in pressure medium, under canceling release mechanical system's effect, the cylinder body of execution jar is contradicted with the annular step that is located interior week that is equipped with on the piston body bottom surface of piston, and the annular step that is located the periphery that is equipped with on the piston body bottom surface surrounds with cylinder body inner wall, interior bottom surface and forms sealed pressure chamber to guarantee that originated fastening pressure initial value is greater than canceling release mechanical system's effort.

The embodiment of the utility model provides a last cylinder body bottom surface edge through carrying out the jar sets up the spacing face of piston to with the spacing step cooperation that piston body upper end periphery was equipped with, in order to inject canceling release mechanical system's working stroke in normal operating range, when preventing to appear carrying out not placing the stopper in the jar, exert fastening pressure's maloperation and lead to damaging the piston to cylinder body or piston promptly, make carrying out jar and piston drop even.

The embodiment of the utility model provides a piston is fixed on supporting pedestal, through at least one locating pin between execution jar and supporting pedestal to prevent to execute the jar and rotate for the piston relatively.

Example one

Referring to fig. 1, in this embodiment, the connection device for detecting the pressure sensor includes an execution cylinder 1 with a cavity therein, a piston 3 disposed in the cavity of the execution cylinder 1, a support base 2 fixedly connected with the piston 3, and a limit block 5 embedded in an upper portion of the execution cylinder 1, the piston 3 is in sealed sliding connection with an inner wall of the cavity of the execution cylinder 1, the piston 3 divides the cavity of the execution cylinder 1 into a sealed pressure chamber 7 with a variable volume and an accommodating chamber 9 with a variable volume, a cylinder body of the execution cylinder 1 is provided with a first pressure source interface 13 communicated with the sealed pressure chamber 7, and the first pressure source interface 13 is used for connecting a first pressure source, which is communicated with the sealed pressure chamber 7 through a first pipeline 15 disposed on a side wall of the execution cylinder 1; a second pressure source interface 21 communicated with the accommodating cavity 9 is arranged on the supporting base 2, the accommodating cavity 9 is used for accommodating the pressure sensor 01 and is communicated with the second pressure source interface 21 through a second pipeline 311 arranged in the piston 3, and the second pressure source interface 21 is used for being connected with a second pressure source and providing detection pressure for the pressure sensor 01; the limiting block 5 is used for being sleeved and abutted against the pressure sensor 01, and the lower part of the limiting block is rotatably arranged at the upper part of the cylinder body of the actuating cylinder 1; when the sealing pressure cavity 7 is filled with pressure medium through the first pressure source interface 13, fastening force generated by the pressure medium acts on the actuating cylinder 1, the actuating cylinder 1 moves axially relative to the piston 3 and then compresses the pressure sensor 01 through the limiting block 5 in a matching manner, so that the volume of the accommodating cavity 9 is changed to seal and clamp the sensing end of the pressure sensor arranged in the accommodating cavity 9, at the moment, the upper end surface of the piston 3 is sealed and compressed with the sensing end of the pressure sensor 01 to form a working pressure cavity 6, and the working pressure cavity 6 is communicated with the second pressure source interface 21 through the second pipeline 311.

Referring to fig. 2A and 2B, the longitudinal section of the piston 3 is a T-shaped structure with a wide top and a narrow bottom, and includes a piston body 31 and a piston rod 32 that are integrally connected, the bottom of the cylinder body of the actuating cylinder 1 is provided with a piston mounting hole 113, the piston rod 32 passes through the piston mounting hole 113 and is fixedly connected with the support base 2, the piston body 31 is located in the cylinder body, the outer periphery of the piston body 31 is provided with a first sealing member 313 (e.g., a sealing ring or a combined sealing member), the outer wall of the piston body 31 is slidably and sealingly contacted with the inner wall of the cylinder body, the outer periphery of the piston rod 32 is provided with a second sealing member 314 (e.g., a sealing ring or a combined sealing member), and the outer wall of the piston rod 32 is slidably and sealingly contacted with the inner wall of the piston mounting hole 113; the second pipeline 311 is located inside the piston 3 and penetrates through the piston body 31 and the piston rod 32, the lower end of the second pipeline 311 is communicated with a second pressure source interface 21 arranged on the support base 2, the upper end of the second pipeline 311 is communicated with a groove 312 arranged at the top of the piston body 31, the groove 312 is in sealing contact with a sensing end of the pressure sensor 01 to form a working pressure chamber 6, and the second pressure source enters the working pressure chamber 6 through the second pressure source interface 21 and the second pipeline 311 to apply a preset working pressure to the sensing end of the pressure sensor 01. Preferably, a third sealing member 321, for example, a sealing ring, is embedded inside the groove 312 to prevent leakage of the pressure medium inside the working pressure chamber 6; in case of pressure medium leakage, the lower cylinder body 11 of the actuating cylinder 1 is provided with an overflow hole 111, the overflow hole 111 is arranged at the upper half part of the lower cylinder body 11 and is always communicated with the accommodating cavity 9, and the pressure medium leakage condition can be quickly observed and timely processed through the overflow hole 111.

Further, in this embodiment, the pressure sensor detection connecting device is further provided with a reset mechanism 4, and the reset mechanism 4 is arranged between the support base 2 and the bottom of the cylinder body of the actuating cylinder 1 and is used for resetting the actuating cylinder 1. After the pressure in the sealed pressure cavity 7 is released, the actuating cylinder 1 moves upwards under the action of the reset mechanism 4, so that the actuating cylinder contacts with the fastening force of the pressure sensor 01, and the pressure sensor 01 and the limiting block 5 can be conveniently taken out.

The bottom surface of the piston body 31 of the piston 3 is provided with two stages of annular steps 316, and the annular steps and the inner wall and the inner bottom surface of the cylinder body of the execution cylinder 1 surround to form an annular sealing pressure cavity 7. Referring to fig. 2A, when no pressure medium is introduced, under the action of the reset mechanism 4 between the bottom of the actuating cylinder 1 and the support base 2, the cylinder body of the actuating cylinder 1 is abutted against the annular step which is arranged on the bottom surface of the piston body 31 of the piston 3 and is positioned on the inner periphery, and the annular step which is arranged on the bottom surface of the piston body 31 and is positioned on the outer periphery surrounds the inner wall and the inner bottom surface of the cylinder body to form a sealing pressure chamber 7, so that the initial value of the fastening pressure is ensured to be greater than the reverse acting force of the reset mechanism; when pressure medium is introduced, the pressure medium enters the sealed pressure cavity 7, the generated fastening pressure acts on the bottom surface of the cylinder body, and the fastening pressure pushes the execution cylinder 1 to move downwards to compress the reset mechanism 4 because the piston 3 is fixed, so that the sealed pressure cavity 7 is increased to a cavity between the two-stage annular step 316 on the bottom surface of the piston body 31 and the inner wall and the inner bottom surface of the cylinder body, the pressure bearing area of the fastening pressure is correspondingly increased, and the thrust applied to the execution cylinder 1 is also correspondingly increased.

Further, a cylinder body annular groove 114 is formed in the bottom of the actuating cylinder 1 around the periphery of the piston mounting hole 113, correspondingly, a base annular groove 22 aligned with the cylinder body annular groove 114 is formed in the top of the support base 2, the upper end and the lower end of the reset mechanism 4 are respectively arranged in the cylinder body annular groove 114 and the base annular groove 22, the piston 3 is fixed on the support base 2, the cylinder body of the actuating cylinder 1 is limited between the piston body 31 and the support base 2, and the reset mechanism 4 is limited between the bottom of the cylinder body and the support base 2.

In this embodiment, the return mechanism 4 may be an annular spring structure, preferably a disc spring, and has the characteristics of short stroke, large load, and convenient combination and use, and is suitable for high-voltage occasions.

The reset mechanism 4 can also be a screw rod mechanism, and the screw rod mechanism needs to be detached after the execution cylinder 1 is reset, so that the screw rod mechanism is prevented from blocking the downward movement of the execution cylinder 1.

The cylinder body of the actuating cylinder 1 comprises a lower cylinder body 11 and an upper cylinder body 12, wherein the upper cylinder body 12 is cylindrical, and the upper cylinder body 12 and the lower cylinder body 11 are fixedly connected through long bolts 14 arranged at intervals along the circumferential direction (for example, in the embodiment shown in fig. 2B, the number of the long bolts 14 is 15, and the long bolts are uniformly distributed at equal intervals); an annular groove is arranged in the middle of the inner wall of the upper cylinder body 12 to serve as a limiting ring groove 121, a plurality of arc notches 122 communicated with the limiting ring groove 121 are arranged on the upper portion of the inner wall of the upper cylinder body 12 at equal intervals, and the arc notches 122 are matched with arc protrusions 51 arranged on the periphery of the lower portion of the limiting block 5 (see fig. 3A); referring to fig. 2B, a stop pin 123 is disposed on the left side or the right side of each circular arc notch 122 of the upper cylinder 12 (in fig. 2B, the stop pins 123 are disposed on the right side of the circular arc notches 122), and the lower end of the stop pin 123 extends into the limit ring groove 121 of the upper cylinder 12.

The structure of the limiting block 5 used in cooperation with the upper cylinder body 12 of the actuating cylinder 1 is shown in fig. 3A, the lower part of the limiting block 5 extends into the upper cylinder body 12, the upper part of the limiting block extends out of the upper cylinder body 12, an arc protrusion 51 arranged on the periphery of the lower part of the limiting block 5 is matched with an arc notch 122 arranged on the upper part of the upper cylinder body 12, and a plurality of anti-skid protrusions 52 (such as arc protrusions) are arranged on the uniform part of the periphery of the upper part of the limiting block 5 to play a role of rotation and anti-skid; the top surface of the limiting block 5 is uniformly provided with at least one position mark 53, the position mark 53 is used in cooperation with an open position mark 124 and a close position mark 125 (see fig. 2B) arranged on the top surface of the upper cylinder body 12, that is, when the position mark 53 of the limiting block 5 is aligned with the open position mark 124, the circular arc protrusion 51 of the limiting block 5 is aligned with the circular arc notch 122 of the upper cylinder body 12, after the limiting block 5 is arranged in the limiting ring groove 121 of the upper cylinder body 12, the limiting block 5 is rotated (if the stop pin 123 is arranged on the right side of the circular arc notch 122, the limiting block 5 rotates leftwards until the limiting block 5 touches the stop pin 123, if the stop pin 123 is arranged on the left side of the circular arc notch 122, the limiting block 5 rotates rightwards until the limiting block 5 touches the stop pin 123, at this time, the position mark 53 is aligned with the close position mark 125, and the circular arc protrusion 51 is embedded in the limiting ring groove 121. Preferably, the number of the position marks 53 is equal to the number of the circular arc protrusions 51, and the positioning of the limiting block 5 can be realized only by aligning any one of the position marks 53 with the corresponding open position mark 124 or the corresponding closed position mark 125.

The utility model discloses the device is in the use, and maloperation may take place, when not placing stopper 5 promptly, just let in pressure medium for carry out jar 1 under the effect of fastening pressure, continuously move down compression canceling release mechanical system 4, to exceeding normal working range restriction, probably damage canceling release mechanical system, perhaps, in case release fastening pressure, carry out jar 1 and receive canceling release mechanical system 4's powerful impact force effect of restoring force, probably damage piston 3, make even carry out jar 1 and piston 3 and drop.

In order to prevent the above phenomenon, the bottom edge of the upper cylinder 12 extends inward relative to the inner wall of the lower cylinder 11 to form a piston limiting surface 126, and correspondingly, the outer periphery of the upper end of the piston body 31 is provided with an annular limiting step 315, at this time, if a misoperation occurs, the fastening pressure pushes the actuating cylinder 1 to move downwards, and when the piston limiting surface 126 contacts the limiting step 315, the resetting mechanism 4 cannot be continuously compressed due to the blocking of the piston 3 and is always in a normal working range. In addition, the longitudinal distance between the piston limiting surface 126 and the limiting step 315 is greater than the total longitudinal distance between the circular arc protrusion 51 of the limiting block and the limiting ring groove 121 of the upper cylinder body 12, and the difference between the two is preferably 5 mm. The upper end of the circular arc protrusion 51 of the limiting block 5 is pressed by the upper end of the limiting ring groove 121 of the upper cylinder body 12, so that the fastening pressure applied on the actuating cylinder 1 can be transmitted to the pressure sensor 01 through the limiting block 5, and the sensing end of the pressure sensor 01 is in sealed communication with the working pressure in the working pressure cavity 6.

Further, in this embodiment, in order to prevent the actuator cylinder 1 from rotating relative to the support base 2 during operation of the pressure sensor detection connection device, the actuator cylinder 1 and the support base 2 are positioned by at least one positioning pin 8. At least one pin hole 112 for installing the positioning pin 8 is formed in the bottom of the lower cylinder body 11 of the actuating cylinder 1, correspondingly, the top of the support base 2 is provided with a positioning hole 24 aligned with the pin hole 112, the upper end of the positioning pin 8 is fixedly installed (for example, in threaded connection) in the pin hole 112, the lower end of the positioning pin 8 is slidably accommodated in the positioning hole 24, the positioning pin 8 can axially move along with the cylinder body, and in the axial process of the positioning pin 8, the lower end of the positioning pin 8 is always located in the positioning hole 24, so that relative rotation between the actuating cylinder 1 and the support base 2 is prevented. If the execution cylinder 1 and the support base 2 can rotate relatively, the limit block 5 can possibly fall off along with the rotation of the execution cylinder 1 due to the pushing action of the stop pin 123; in addition, if the actuating cylinder 1 rotates, the positions of the overflow holes 111 are random, which is inconvenient for observing the overflow condition in time.

Preferably, the bottom of the cylinder body of the actuating cylinder 1 is symmetrically provided with two pin holes 112, and two positioning pins 8 are correspondingly installed.

Further, the bottom of the support base 2 is provided with a plurality of screw holes 23 for mounting the device.

The components are assembled according to the process to form the connecting device for detecting the pressure sensor, the connecting device is used for enabling the sensing end of the pressure sensor 01 to be communicated with the second pressure source in a sealing mode, meanwhile, the quick and automatic connecting operation is achieved, and labor saving and high efficiency are achieved. The working principle and the working process of the device are as follows:

1) first, referring to fig. 3B, the pressure sensor 01 is placed into the upper cylinder 12 of the actuating cylinder 1, the stopper 5 is inserted into the pressure sensor 01 and aligned with the circular arc notch 122 of the upper cylinder 12 with the circular arc protrusion 51 (at this time, the position mark 53 of the stopper 5 corresponds to the position mark 124 of the upper cylinder 12), the stopper 5 is placed into the upper cylinder 12 and pressed on the pressure sensor 01, and then the stopper 5 is rotated until the stopper pin 123 is touched (at this time, the position mark 53 of the stopper 5 corresponds to the position mark 125 of the upper cylinder 12).

2) Inputting pressure medium into the sealed pressure cavity 7 from the first pressure source interface 13, so that the sealed pressure cavity 7 is filled with the pressure medium; pressure medium is then fed from the second pressure source connection 21 into the working pressure chamber 7, and the point-by-point detection or calibration operation of the pressure sensor 01 is started.

The pressure medium may be a gas medium or a liquid medium, and in this embodiment, a liquid medium is used in a high-pressure situation; because the first sealing element 313 and the second sealing element 314 are arranged in the piston 3, the sealing pressure cavity 7 is internally reliably sealed, because the piston 3 is fixed on the supporting base 2, the pressure medium of the sealing pressure cavity 7 generates downward fastening pressure on the cylinder body, the fastening pressure pushes the cylinder body to move axially and downwards, the upper end surface of the limiting ring groove 121 of the upper cylinder body 12 is pressed with the upper end surface of the arc protrusion 51 of the limiting block 5, meanwhile, the bottom of the limiting block 5 is pressed with the pressure sensor 01, and the sensing end of the pressure sensor 01 is communicated with the working pressure cavity 7 in a sealing way. Therefore, the sensing end of the pressure sensor 01 is subjected to a downward pulling force F1, which is determined by the input fastening pressure P1 and the pressure-bearing area S1 of the cylinder (i.e., the contact area of the sealed pressure chamber 7 and the inner bottom surface of the cylinder), i.e., F1 — P1 × S1.

Then, the pressure medium is input into the working pressure chamber 7 from the second pressure source port 21, and since the piston 3 is fixed on the support base 2, the pressure medium generates an upward thrust on the sensing end of the pressure sensor 01, and during the point-by-point detection or verification process of the pressure sensor 01, the maximum working pressure P2 generates the maximum pressure F2, which is determined by the maximum working pressure P2 and the pressure-bearing area S2 of the pressure sensor 01 (which is equivalent to the pressure-bearing area of the piston body 31, i.e., the transverse cross-sectional area of the groove 312 of the piston body 31), that is, F2 is P2 × S2.

The pressure-receiving area S1 of the cylinder is usually several times the pressure-receiving area S2 of the piston body 31, and in this embodiment, S1 is set to 8S2, that is, the pressure-receiving area S1 of the lower cylinder 11 is eight times the operating pressure-receiving area S2 of the piston body 31. Therefore, only a small fastening pressure P1 is required, so that F1> F2+ F (the acting force of the return mechanism 4, for example, the return mechanism 4 is of an annular spring structure) can be satisfied, and the sensing end of the pressure sensor 01 is ensured to be in sealed communication with the working pressure chamber 7.

Therefore, during the operation of the device, F1> F2+ F is satisfied (the acting force of the reset mechanism 4, for example, the reset mechanism 4 is in an annular spring structure), and due to the action of the third sealing element 321, the contact surface of the pressure sensor 01 and the piston body 31 is pressed, and the sensing end of the pressure sensor 01 is in sealed communication with the operating pressure chamber 7 without leakage.

3) After the detection or verification work is finished, after the working pressure returns to zero, the execution cylinder 1 is reset under the action of the reset mechanism 4 (the execution cylinder 1 moves axially upwards), the upper end surface of the limiting ring groove 121 of the upper cylinder body 12 is separated from the upper end surface of the limiting block 5 to generate a gap, referring to fig. 3C, the limiting block 5 is rotated to enable the position mark 53 of the limiting block to correspond to the position mark 124 of the upper cylinder body 12, and then the limiting block 5 and the pressure sensor 01 are sequentially taken out of the execution cylinder 1 to complete a detection process.

Example two

The structure of the pressure sensor detection connection device differs from that of the first embodiment in that:

in this embodiment, the actuating cylinder 1 is fixedly connected to the support base 2, the piston rod 32 of the piston 3 is slidably connected to the support base 2 in a sealing manner, the return mechanism 4 is disposed between the piston 3 and the bottom of the actuating cylinder 1, and if the return mechanism 4 is an annular spring structure, the annular spring structure is always in a compressed state, and applies a downward pressure to the piston 3.

Specifically, a limiting disc may be fixed on the piston rod 32 of the piston 3, and the return mechanism 4 is disposed between the limiting disc and the support base 2, where an acting force of the return mechanism 4 on the piston 3 is a downward pulling force (for example, a spring is stretched); or a reset mechanism 4 is arranged between the limiting disc and the bottom of the cylinder body of the actuating cylinder 1, and the acting force of the reset mechanism 4 on the piston 3 is downward thrust (for example, a spring is compressed).

Furthermore, the positioning pin 8 can be omitted, since the rotation of the piston 3 does not substantially affect the operation of the entire device.

Other structures are the same as those of the first embodiment, and are not described herein again.

Taking the reset mechanism 4 located between the piston 3 (limiting disc) and the bottom of the cylinder body of the limiting disc and the actuating cylinder 1 as an example, the working engineering is described as follows:

in the working process, the pressure medium of the sealing pressure cavity 7 generates upward fastening pressure on the piston 3, the fastening pressure pushes the piston 3 to move axially upwards, so that the upper end surface of the limiting ring groove 121 of the upper cylinder body 12 is tightly pressed with the upper end surface of the arc protrusion 51 of the limiting block 5, meanwhile, the bottom of the limiting block 5 is tightly pressed with the pressure sensor 01, and the sensing end of the pressure sensor 01 is hermetically communicated with the working pressure cavity 7; in this process, the restoring mechanism 4 is compressed at the same time, and the restoring mechanism 4 applies a downward pressure f to the piston 3. Therefore, the piston 3 is subjected to an upward pressure F3, which is determined by the input fastening pressure P3 and the pressure-receiving area S3 of the piston 3 (i.e., the contact area of the seal pressure chamber 7 with the bottom surface of the piston 3), i.e., F3 — P1 × S3.

Then, the pressure medium is input into the working pressure chamber 7 from the second pressure source port 21, and since the actuating cylinder 1 and the support base 2 are fixed, the pressure medium generates a downward thrust on the piston 3, and during the point-by-point detection or verification process of the pressure sensor 01, the maximum working pressure P4 generates a maximum pressure F4, which is determined by the maximum working pressure P4 and the pressure-bearing area S4 of the piston 3 (the pressure-bearing area of the piston body 31, i.e., the transverse cross-sectional area of the groove 312 of the piston body 31), that is, F4 is P4 × S4.

The pressure-receiving area S3 of the bottom of the piston 3 is usually several times larger than the pressure-receiving area S4 of the upper end surface of the piston body 31, and in this embodiment, S3 is set to 8S4, that is, the pressure-receiving area S3 of the bottom of the piston 3 is eight times larger than the working pressure-receiving area S4 of the upper end surface of the piston body 31. Therefore, only a small fastening pressure P3 is required, so that F3> F4+ F (the acting force of the return mechanism 4, for example, the return mechanism 4 is of an annular spring structure) can be satisfied, and the sensing end of the pressure sensor 01 is ensured to be in sealed communication with the working pressure chamber 7.

Therefore, during the operation of the device, F3> F4+ F is satisfied (the acting force of the reset mechanism 4, for example, the reset mechanism 4 is in an annular spring structure), and due to the action of the third sealing element 321, the contact surface of the pressure sensor 01 and the piston body 31 is pressed, and the sensing end of the pressure sensor 01 is in sealed communication with the operating pressure chamber 7 without leakage.

It will be understood by those skilled in the art that these examples or embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention, and that various equivalent modifications and changes may be made without departing from the scope of the present invention.

Claims (17)

1. A connecting device for detecting a pressure sensor is characterized by comprising:

the actuating cylinder (1) is provided with a cavity in the cylinder body;

the piston (3) is arranged in the cavity of the execution cylinder (1) and is in sealed sliding connection with the inner wall of the cavity, the piston (3) divides the cavity into a sealed pressure cavity (7) with variable volume and an accommodating cavity (9) with variable volume, and the sealed pressure cavity (7) is used for generating fastening force for changing the volume of the accommodating cavity (9) so as to seal and clamp the sensing end of a pressure sensor arranged in the accommodating cavity (9);

a first pressure source connection (13) which communicates with the sealing pressure chamber (7) via a first line;

and a second pressure source interface (21) which is communicated to the accommodating cavity (9) through a second pipeline and provides detection pressure for the pressure sensor.

2. The pressure sensor detecting connection device according to claim 1,

the first pipeline is arranged in the piston (3) or the side wall of the actuating cylinder (1);

the second line is arranged in the piston (3).

3. The pressure sensor connection device for detection according to claim 1, wherein the second conduit communicates with a groove (312) provided on an upper end surface of the piston (3), the groove (312) facing the sensing end of the pressure sensor.

4. The pressure sensor detection connecting device according to claim 1, wherein the bottom surface of the piston (3) is provided with two-stage annular steps (316) with high outside and low inside, and the annular steps (316) and the inner wall and the inner bottom surface of the cylinder body of the actuating cylinder (1) surround to form an annular sealing pressure cavity (7).

5. The connecting device for detecting the pressure sensor according to claim 1, wherein a limiting block (5) for penetrating and abutting against the pressure sensor is arranged at the upper part of the actuating cylinder (1), and the lower part of the limiting block (5) is connected with the upper part of the cylinder body of the actuating cylinder (1) in a rotating and nesting manner to tightly seal and press the sensing end of the pressure sensor and the upper end surface of the piston (3) to form a working pressure cavity (6).

6. The connecting device for detecting the pressure sensor according to claim 5, wherein the cylinder body of the actuating cylinder (1) comprises a lower cylinder body (11) and an upper cylinder body (12), and the upper cylinder body (12) and the lower cylinder body (11) are connected and fixed by a plurality of long bolts (15) arranged at intervals along the circumferential direction; an annular groove is arranged in the middle of the inner wall of the upper cylinder body (12) and serves as a limiting ring groove (121), a plurality of arc notches (122) communicated with the limiting ring groove (121) are arranged on the upper portion of the inner wall of the upper cylinder body (12) at equal intervals, and the arc notches (122) are matched with arc protrusions (51) arranged on the periphery of the lower portion of the limiting block (5).

7. The connecting device for detecting the pressure sensor according to claim 6, wherein a stop pin (123) is arranged on the left side or the right side of each circular arc notch (122) of the upper cylinder body (12), and the lower end of the stop pin (123) extends into the limit ring groove (121) of the upper cylinder body (12).

8. The connecting device for detecting the pressure sensor according to claim 7, wherein the top surface of the limiting block (5) is uniformly provided with at least one position mark (53), the top surface of the upper cylinder body (12) is provided with an open position mark (124) and an off position mark (125), the position mark (53) of the limiting block (5) is aligned with the open position mark (124) of the upper cylinder body (12), and the arc protrusion (51) of the limiting block (5) is aligned with the arc notch (122) of the upper cylinder body (12); the position mark (53) of the rotated limiting block (5) is aligned with the closing mark (125) of the upper cylinder body (12), and the arc-shaped protrusion (51) is embedded into the limiting ring groove (121).

9. The pressure sensor connecting device for detection according to claim 6, wherein the bottom edge of the upper cylinder (12) extends inwards relative to the inner wall of the lower cylinder (11) to form an annular piston limiting surface (126), and the outer periphery of the upper end of the piston (3) is provided with an annular limiting step (315).

10. The pressure sensor detecting connecting device according to claim 5, wherein the area of the bottom surface of the lower cylinder (11) contacting the sealing pressure chamber (7) is larger than the area of the end surface of the sensing end of the pressure sensor contacting the working pressure chamber (6), or

The area of the bottom surface of the piston (3) in contact with the sealing pressure chamber (7) is larger than the area of the end surface of the piston (3) of the pressure sensor in contact with the working pressure chamber (6).

11. The pressure sensor-detecting connecting device according to claim 10, wherein the area of the bottom surface of the lower cylinder (11) in contact with the seal pressure chamber (7) is three to ten times the area of the end surface of the sensing end of the pressure sensor in contact with the working pressure chamber (6), or

The area of the bottom surface of the piston (3) in contact with the sealing pressure chamber (7) is three to ten times larger than the area of the end surface of the piston (3) of the pressure sensor in contact with the working pressure chamber (6).

12. The pressure sensor-detecting connecting device according to any one of claims 1 to 11,

the first pressure source interface (13) is communicated with the sealed pressure cavity (7) through a first pipeline to inject pressure liquid medium;

the second pressure source interface (21) is communicated with the accommodating cavity (9) through a second pipeline and provides liquid detection pressure for the pressure sensor.

13. The pressure sensor detecting connecting device according to any one of claims 1 to 11, wherein the piston (3) includes a piston body (31) and a piston rod (32) integrally connected, the piston rod (32) penetrates through the bottom of the actuating cylinder (1) and is fixed to a support base (2), and the second pipe penetrates through the piston body (31) and the piston rod (32) and communicates with a second pressure source port (21) provided on the support base (2).

14. The pressure sensor connecting device for detection according to claim 13, further comprising a return mechanism (4), wherein the return mechanism (4) is an annular spring structure and is disposed between the support base (2) and the bottom of the lower cylinder (11).

15. The connecting device for detecting the pressure sensor according to claim 13, further comprising at least one positioning pin (8), wherein the bottom of the cylinder body of the actuating cylinder (1) is provided with at least one pin hole (112), the top of the supporting base (2) is provided with a positioning hole (24) aligned with the pin hole (112), the upper end of the positioning pin (8) is fixedly installed in the pin hole (112), and the lower end of the positioning pin (8) is slidably accommodated in the positioning hole (24).

16. The pressure sensor connecting device for detecting according to any one of claims 1 to 11, wherein the piston (3) comprises a piston body (31) and a piston rod (32) which are integrally connected, the piston rod (32) penetrates through the bottom of the actuating cylinder (1) and is in sliding sealing connection with a support base (2), the support base (2) is fixedly connected with the actuating cylinder (1), and the second pipeline penetrates through the piston body (31) and the piston rod (32) and is communicated with a second pressure source interface (21) arranged on the support base (2).

17. The pressure sensor connecting device for detection according to claim 16, further comprising a return mechanism (4), wherein the return mechanism (4) is an annular spring structure and is disposed between the support base (2) and the piston (3) or between the bottom of the actuating cylinder (1) and the piston (3).

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