An explosion-proof flap wave elimination performance test tooling

Abstract

The present application provides a test tool for the wave elimination performance of an explosion-proof flap, which relates to the technical field of impact testing. The test tool for the wave elimination performance of the explosion-proof flap includes: an impact detection module and an analysis module; the number of the impact detection modules is two, which are respectively arranged on both sides of the explosion-proof flap; the impact detection module includes: a square hollowed-out bracket, a sensor fixing barrel, an impact sensor and a tension spring; the sensor fixing barrel is suspended in the middle of the square hollowed-out bracket; the analysis module is used to collect and analyze the data collected by the impact sensor. The impact detection module is arranged in a suspended manner, which can prevent the self-vibration of the flap after being impacted from affecting the impact sensor and improve the detection accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of impact testing, and particularly to a test tool for the wave elimination performance of an explosion-proof flap valve. Background Art

[0002] During the wave elimination performance test of traditional explosion-proof flap valves, impact sensors are usually directly set on the flap valves. Since the flap valves will vibrate when being impacted, on the one hand, it will affect the detection accuracy of the impact sensors, and on the other hand, the self-vibration of the valve body may cause damage inside the sensors. In addition, most of the existing impact sensors are single-range sensors, which can only measure small impacts or large impacts separately and do not have functions such as a large measurement range and high precision. Therefore, how to improve the measurement range of the impact sensors while preventing the influence caused by the vibration of the valve body is a current technical difficulty. Summary of the Invention

[0003] In view of the above technical problems, the present invention provides a test tool for the wave elimination performance of an explosion-proof flap valve, including: an impact detection module and an analysis module; the number of the impact detection modules is two, which are respectively arranged on both sides of the explosion-proof flap valve; the impact detection module includes: a square hollowed-out support, a sensor fixing barrel, an impact sensor and a tension spring; a plurality of first fixing hooks are arranged around the sensor fixing barrel, a plurality of second fixing hooks are arranged at the diagonal positions of the square hollowed-out support, the tension spring connects the first fixing hook and the second fixing hook, and the sensor fixing barrel is suspended in the middle of the square hollowed-out support; the impact sensor is fixedly arranged inside the sensor fixing barrel; the analysis module is used to collect and analyze the data collected by the impact sensor.

[0004] Optionally, the impact sensor includes a sensor main body, a pressure-sensitive main body, a first fixing ring, a sealing circular plate, a front fixing ring, a diversion ring, a diversion hole and a pressure-sensitive optical fiber; the sensor main body is a hollow cylinder with openings at both ends, and a cross beam is arranged inside it; the middle of the cross beam is a circular ring, and four elastic cantilever beams are equidistantly arranged outside; one end of the pressure-sensitive main body passes through the circular ring in the middle of the cross beam and is fixed on the cross beam through the first fixing ring.

[0005] Optionally, a first annular groove and a second annular groove are provided on the pressure-sensing side of the sensor body, and the diameter of the first annular groove is larger than that of the second annular groove; the flow guiding ring is a hollow ring and has a transition surface with a middle convex and flat sides on its outer side, the inner diameter of the flow guiding ring has a clearance fit with the outer diameter of the pressure-sensing body, and the outer diameter of the flow guiding ring matches the inner diameter of the second annular groove; the flow guiding ring is fixedly arranged inside the second annular groove; a plurality of flow guiding holes are provided at the position of the second annular groove corresponding to the transition surface; the front fixing ring matches the first annular groove in size and is fixedly arranged inside the first annular groove; the inner diameter of the front fixing ring is smaller than the inner diameter of the flow guiding ring.

[0006] Optionally, the pressure-sensing body includes a first body, a second body, a pressure-sensing diaphragm, a first force-transmitting rod, a first elastic column, a pressure-bearing fixing column, a spring, a second fixing ring, a first disc and a second disc; both the first body and the second body are cylinders and are integrally formed, and the diameter of the first body is larger than that of the second body; the outer side of the second body is provided with threads, and the inner side of the first fixing ring is provided with matching threads; the first body cavity, a first hollow limiting column and a first body groove are arranged inside the first body; a second body cavity, a second body groove and an optical fiber guiding hole are arranged inside the second body; the first body cavity and the second body cavity are coaxial cylindrical cavities; the first hollow limiting column is arranged inside the first body cavity, and an annular first body groove is arranged on the outer side of the first body cavity; an annular second body groove is arranged on the outer side of the second body cavity; a central guiding hole is arranged in the middle of the pressure-sensing body, and the central guiding hole communicates with the first body cavity and the second body cavity and is coaxial with them.

[0007] Optionally, the pressure-sensing diaphragm is hermetically arranged in the first body groove through the second fixing ring; a first disc is arranged in the middle of the pressure-sensing diaphragm, a second disc is arranged at the end of the first force-transmitting rod close to the pressure-sensing diaphragm, and the first disc is fixedly connected to the second disc; the first force-transmitting rod is a solid cylinder and has a clearance fit with the central guiding hole; the first force-transmitting rod passes through the central guiding hole and abuts against the first elastic column; the pressure-bearing fixing column is fixed in the second body groove, a first elastic column is arranged on the inner side of the pressure-bearing fixing column facing inwards, and the first elastic column is arranged inside the second body cavity; a through first optical fiber perforation is arranged inside the first elastic column; a through optical fiber guiding hole is arranged on the second body; the diameter of the optical fiber guiding hole is larger than that of the first optical fiber perforation and they are coaxial.

[0008] Optionally, a spring is disposed inside the first hollow limiting post. The spring is sleeved outside the first force transmission rod and abuts against the second disc and the inner wall of the first main body cavity.

[0009] Optionally, the sealing circular plate includes a first circular fixing plate, a second circular fixing plate, a second hollow limiting post, and a second elastic post; the diameter of the first circular fixing plate is greater than the diameter of the second circular fixing plate, and the diameter of the second circular fixing plate matches the inner diameter of the sensor main body; the first circular fixing plate is fixedly disposed at one end of the sensor main body; the second elastic post is disposed inside the second hollow limiting post; a through second optical fiber perforation is disposed inside the second elastic post, and a through groove is opened at a position of the second hollow limiting post corresponding to the second optical fiber perforation; a second force transmission rod is disposed on an outward side of the pressure-bearing fixing post; the second force transmission rod abuts against the second elastic post; a rectangular groove is disposed on the second circular fixing plate, and a fiber leading-through hole communicating with the outside is disposed on the first circular fixing plate, and the rectangular groove communicates with the fiber leading-through hole.

[0010] Optionally, a first pressure-sensitive grating and a second pressure-sensitive grating are disposed on the pressure-sensitive optical fiber; the first pressure-sensitive grating is disposed inside the first optical fiber perforation, and the second pressure-sensitive grating is disposed inside the second optical fiber perforation; the reflection wavelengths of the first pressure-sensitive grating and the second pressure-sensitive grating are different.

[0011] Compared with the prior art, the present invention has achieved the following technical effects: The impact detection module is suspended, which can prevent the self-vibration of the flap after being impacted from affecting the impact sensor and improve the detection accuracy. The dual-range setting of the impact sensor improves the impact measurement range. The setting of the same light source can ensure the synchronization of the collected data and reduce the error caused by the time delay during data collection. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of a test structure of an anti-explosion wave flap shock absorption performance test tooling provided by an embodiment of the present invention;

[0013] Figure 2 It is a schematic diagram of a structure of an anti-explosion wave flap shock absorption performance test tooling provided by an embodiment of the present invention;

[0014] Figure 3 It is a schematic diagram of an explosion structure of an impact sensor in an anti-explosion wave flap shock absorption performance test tooling provided by an embodiment of the present invention;

[0015] Figure 4 It is a schematic cross-sectional view of an impact sensor in an anti-explosion wave flap shock absorption performance test tooling provided by an embodiment of the present invention;

[0016] Figure 5 Schematic diagram of the internal structure of an impact sensor in a blast wave valve shock absorption performance test tooling provided by an embodiment of the present invention;

[0017] Figure 6 Schematic diagram of the structure of the internal pressure-bearing fixing column of the impact sensor in a blast wave valve shock absorption performance test tooling provided by an embodiment of the present invention;

[0018] Figure 7 Schematic diagram of the structure of the sensor main body of the impact sensor in a blast wave valve shock absorption performance test tooling provided by an embodiment of the present invention;

[0019] Figure 8 Schematic diagram of the structure of the pressure-sensing main body of the impact sensor in a blast wave valve shock absorption performance test tooling provided by an embodiment of the present invention;

[0020] Figure 9 Schematic diagram of the structure of the sealing circular plate of the impact sensor in a blast wave valve shock absorption performance test tooling provided by an embodiment of the present invention;

[0021] Figure 10 Schematic diagram of the connection of the pressure-sensing optical fiber in a blast wave valve shock absorption performance test tooling provided by an embodiment of the present invention.

[0022] Explanation of reference numerals: 1, square hollow bracket; 2, sensor fixing barrel; 3, impact sensor; 31, sensor main body; 311, cross beam; 312, first annular groove; 313, second annular groove; 32, pressure-sensing main body; 321, first main body; 3211, central guide hole; 3212, first main body cavity; 3213, first hollow limiting column; 3214, first main body groove; 322, second main body; 3221, second main body cavity; 3222, second main body groove; 3223, optical fiber guide hole; 323, pressure-sensing diaphragm; 3231, first circular plate; 324, first force transmission rod; 3241, second circular plate; 325, first elastic column; 3251, first optical fiber perforation; 3252, first hemispherical groove; 326, pressure-bearing fixing column; 3261, second force transmission rod; 327, spring; 328, second fixing ring; 33, first fixing ring; 34, sealing circular plate; 341, first circular fixing plate; 342, second circular fixing plate; 343, second hollow limiting column; 344, second elastic column; 3441, second optical fiber perforation; 3442, second hemispherical groove; 35, front fixing ring; 36, diversion ring; 37, diversion hole; 38, pressure-sensing optical fiber; 381, first pressure-sensing grating; 382, second pressure-sensing grating; 4, tension spring.

[0023] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0024] It should be understood that the specific embodiments described herein are only for explaining the present invention and are not used to limit the present invention.

[0025] As Figures 1 - 10 shown, an embodiment of the present invention provides a test tool for the wave attenuation performance of an explosion-proof flap, including: an impact detection module and an analysis module; the number of the impact detection modules is two, which are respectively arranged on both sides of the explosion-proof flap; the impact detection module includes: a square hollowed-out bracket 1, a sensor fixing barrel 2, an impact sensor 3 and a tension spring 4; a plurality of first fixing hooks are arranged around the sensor fixing barrel 2, and a plurality of second fixing hooks are arranged at the diagonal positions of the square hollowed-out bracket 1. The tension spring 4 connects the first fixing hook and the second fixing hook, and the sensor fixing barrel 2 is suspended in the middle of the square hollowed-out bracket 1; the impact sensor 3 is fixedly arranged inside the sensor fixing barrel 2; the analysis module is used to collect and analyze the data collected by the impact sensor 3.

[0026] Optionally, the impact sensor 3 includes a sensor main body 31, a pressure-sensing main body 32, a first fixing ring 33, a sealing circular plate 34, a front fixing ring 35, a diversion ring 36, a diversion hole 37 and a pressure-sensing optical fiber 38; the sensor main body 31 is a hollow cylinder with openings at both ends, and a (one-piece formed) cross beam 311 is arranged inside it; the middle of the cross beam 311 is a circular ring, and four elastic cantilever beams are equidistantly arranged outside; one end of the pressure-sensing main body 32 passes through the circular ring in the middle of the cross beam 311 and is fixed on the cross beam 311 through the first fixing ring 33.

[0027] Optionally, a first annular groove 312 and a second annular groove 313 are arranged on the pressure-sensing side of the sensor main body 31, and the diameter of the first annular groove 312 is larger than that of the second annular groove 313; the diversion ring 36 is a hollow circular ring and its outer side is provided with a transition surface with a middle bulge and flat sides on both sides. The inner diameter of the diversion ring 36 is in clearance fit with the outer diameter of the pressure-sensing main body 32, and the outer diameter of the diversion ring 36 matches the inner diameter of the second annular groove 313; the diversion ring 36 is fixedly arranged inside the second annular groove 313; a plurality of diversion holes 37 are arranged at the position of the second annular groove 313 corresponding to the transition surface; the front fixing ring 35 matches the size of the first annular groove 312 and is fixedly arranged inside the first annular groove 312; the inner diameter of the front fixing ring 35 is smaller than the inner diameter of the diversion ring 36.

[0028] Optionally, the pressure-sensitive body 32 includes a first body 321, a second body 322, a pressure-sensitive diaphragm 323, a first force transmission rod 324, a first elastic column 325, a pressure-bearing fixed column 326, a spring 327, a second fixing ring 328, a first disc 3231, and a second disc 3241; both the first body 321 and the second body 322 are cylinders and are integrally formed, and the diameter of the first body 321 is greater than that of the second body 322; the outer side of the second body 322 is provided with threads, and the inner side of the first fixing ring 33 is provided with matching threads; the interior of the first body 321 is provided with a first body cavity 3212, a first hollow limiting column 3213, and a first body groove 3214; the interior of the second body 322 is provided with a second body cavity 3221, a second body groove 3222, and an optical fiber guiding hole 3223; the first body cavity 3212 and the second body cavity 3221 are coaxial cylindrical cavities; the first hollow limiting column 3213 is arranged inside the first body cavity 3212, and an annular first body groove 3214 is arranged on the outer side of the first body cavity 3212 facing outward; an annular second body groove 3222 is arranged on the outer side of the second body cavity 3221 facing outward; a central guiding hole 3211 is arranged in the middle of the pressure-sensitive body 32, and the central guiding hole 3211 communicates with the first body cavity 3212 and the second body cavity 3221 and is coaxial with them.

[0029] Optionally, the pressure-sensitive diaphragm 323 is hermetically arranged in the first body groove 3214 through the second fixing ring 328; a first disc 3231 is arranged in the middle of the pressure-sensitive diaphragm 323, a second disc 3241 is arranged at the end of the first force transmission rod 324 close to the pressure-sensitive diaphragm 323, and the first disc 3231 and the second disc 3241 are fixedly connected; the first force transmission rod 324 is a solid cylinder and is in clearance fit with the central guiding hole 3211; the first force transmission rod 324 passes through the central guiding hole 3211 and abuts against the first elastic column 325; the pressure-bearing fixed column 326 is fixed in the second body groove 3222, a first elastic column 325 is arranged on the inner side of the pressure-bearing fixed column 326 facing inward, and the first elastic column 325 is arranged inside the second body cavity 3221; a through first optical fiber perforation 3251 is arranged inside the first elastic column 325; a through optical fiber guiding hole 3223 is arranged on the second body 322; the diameter of the optical fiber guiding hole 3223 is greater than that of the first optical fiber perforation 3251 and they are coaxial.

[0030] Optionally, a spring 327 is disposed inside the first hollow limiting post 3213. The spring 327 is sleeved outside the first force transmission rod 324 and abuts against the second disc 3241 and the inner wall of the first main body cavity 3212.

[0031] Optionally, the sealing circular plate 34 includes a first circular fixing plate 341, a second circular fixing plate 342, a second hollow limiting post 343, and a second elastic post 344. The diameter of the first circular fixing plate 341 is greater than that of the second circular fixing plate 342, and the diameter of the second circular fixing plate 342 matches the inner diameter of the sensor main body 31. The first circular fixing plate 341 is fixedly disposed at one end of the sensor main body 31. The second elastic post 344 is disposed inside the second hollow limiting post 343. A through second optical fiber perforation 3441 is disposed inside the second elastic post 344. A through groove is formed at a position of the second hollow limiting post 343 corresponding to the second optical fiber perforation 3441. A second force transmission rod 3261 is disposed on an outward side of the pressure-bearing fixing post 326. The second force transmission rod 3261 abuts against the second elastic post 344.

[0032] Optionally, a rectangular groove 345 is formed on the second circular fixing plate 342, and a fiber guiding through hole 346 communicating with the outside is formed on the first circular fixing plate 341. The rectangular groove 345 communicates with the fiber guiding through hole 346.

[0033] Optionally, one ends of the first force transmission rod 324 and the second force transmission rod 3261 that abut against the elastic post are hemispherical ball heads. First hemispherical grooves 3252 and second hemispherical grooves 3442 are respectively formed at positions of the first elastic post 325 and the second elastic post 344 where they abut against the force transmission rods.

[0034] Optionally, first pressure-sensitive gratings 381 and second pressure-sensitive gratings 382 are disposed on the pressure-sensitive optical fiber 38. The first pressure-sensitive gratings 381 are disposed inside the first optical fiber perforation 3251, and the second pressure-sensitive gratings 382 are disposed inside the second optical fiber perforation 3441. The reflection wavelengths of the first pressure-sensitive gratings 381 and the second pressure-sensitive gratings 382 are different (when the grating is subjected to an external force, its reflection wavelength will change and wavelength drift will occur. By monitoring the wavelength drift, the monitoring of the external force can be realized).

[0035] Optionally, the pressure-sensitive optical fibers in the two impact detection modules share the same laser light source, and the reflection wavelengths of the four pressure-sensitive gratings are all different (the connection mode can be: light source → coupler → 1x2 beam splitter → different pressure-sensitive optical fibers 38; the return light end of the coupler is connected to the analysis module); the lengths of the two pressure-sensitive optical fibers are the same.

[0036] Optionally, the pressure-sensitive diaphragm 323, the first disc 3231, and the second disc 3241 are all elastic metal sheets and are connected by welding.

[0037] Optionally, the impact detection module can be fixedly installed on both sides of the blast valve, including fixing methods such as welding, bolts, and connecting plates.

[0038] Working principle of the blast valve shock attenuation performance test tooling: Impact detection modules are respectively arranged on both sides of the blast valve. The intensity of the shock wave on both sides of the valve is detected through the impact detection module. The value collected at the back side of the valve is divided by the value collected at the front side of the valve to obtain the shock attenuation information of the valve. The impact detection module is arranged in a suspended manner, which can prevent the self-vibration of the valve after being impacted from affecting the impact sensor and improve the detection accuracy.

[0039] The impact sensor adopts a dual-range setting method. The first range is related to the structure of the pressure-sensitive main body 32. Specifically, the pressure-sensitive diaphragm 323, the first force transmission rod 324, the spring 327, and the first elastic column 325 form the first elastic force structure; the second range is related to the structure of the cross beam 311. Specifically, the cross beam 311, the second force transmission rod 3261, and the second elastic column 344 form the second elastic force structure; the elastic modulus of the first elastic force structure is less than that of the second elastic force structure (the greater the elastic modulus, the smaller the deformation against the same external force); when being impacted, the pressure-sensitive diaphragm 323 and the spring 327 move synchronously, driving the first force transmission rod 324 to press against the first elastic column 325 and the deformation is sensed by the first pressure-sensitive grating 381. When exceeding the first range, the first hollow limit column 3213 abuts against the pressure-sensitive diaphragm 323, and the pressure-sensitive diaphragm 323 and the first force transmission rod 324 no longer produce inward displacement; for the cross beam 311-related structure in the second range, it is in a state of being continuously stressed when being impacted. The pressure-sensitive main body 32 drives the second force transmission rod 3261 to move. The second force transmission rod 3261 presses against the second elastic column 344 and the deformation is sensed by the second pressure-sensitive grating 382. When exceeding the second range, the second hollow limit column 343 abuts against the pressure-bearing fixed column 326, and the second force transmission rod 3261 no longer produces inward displacement. The dual-range setting method improves the impact measurement range.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. An explosion-proof flap wave elimination performance test tooling, comprising: Shock detection module, analysis module; The number of the shock detection modules is two, which are respectively arranged on both sides of the blast valve; The shock detection module includes: a square hollow bracket, a sensor fixing barrel, a shock sensor and a tension spring; a plurality of first fixing hooks are arranged around the sensor fixing barrel, a plurality of second fixing hooks are arranged at the diagonal positions of the square hollow bracket, the tension spring connects the first fixing hook and the second fixing hook, and the sensor fixing barrel is suspended in the middle of the square hollow bracket; the shock sensor is fixedly arranged inside the sensor fixing barrel; the analysis module is used for collecting and analyzing the data collected by the shock sensor.

2. The test tooling according to claim 1, characterized in that, Wherein, The shock sensor includes a sensor main body, a pressure sensing main body, a first fixing ring, a sealing circular plate, a front fixing ring, a diversion ring, a diversion hole and a pressure sensing optical fiber; the sensor main body is a hollow cylinder with openings at both ends, and a cross beam is arranged inside it; the middle of the cross beam is a circular ring, and four elastic cantilever beams are equidistantly arranged outside; one end of the pressure sensing main body passes through the circular ring in the middle of the cross beam and is fixed on the cross beam through the first fixing ring.

3. The test tooling according to claim 2, characterized in that, Wherein, A first annular groove and a second annular groove are arranged on the pressure sensing side of the sensor main body, and the diameter of the first annular groove is larger than that of the second annular groove; the diversion ring is a hollow circular ring and its outer side is provided with a transition surface with a middle bulge and flat sides on both sides, the inner diameter of the diversion ring is in clearance fit with the outer diameter of the pressure sensing main body, and the outer diameter of the diversion ring matches the inner diameter of the second annular groove; the diversion ring is fixedly arranged inside the second annular groove; a plurality of diversion holes are arranged at the position of the second annular groove corresponding to the transition surface; the front fixing ring matches the size of the first annular groove and is fixedly arranged inside the first annular groove; the inner diameter of the front fixing ring is smaller than the inner diameter of the diversion ring.

4. The test tooling according to claim 3, characterized in that, Wherein, The pressure sensing main body includes a first main body, a second main body, a pressure sensing diaphragm, a first force transmission rod, a first elastic column, a pressure bearing fixing column, a spring, a second fixing ring, a first circular plate and a second circular plate; the first main body and the second main body are both cylinders and are integrally formed, and the diameter of the first main body is larger than that of the second main body; the outer side of the second main body is provided with threads, and the inner side of the first fixing ring is provided with matching threads; a first main body cavity, a first hollow limiting column and a first main body groove are arranged inside the first main body; a second main body cavity, a second main body groove and an optical fiber guiding hole are arranged inside the second main body; the first main body cavity and the second main body cavity are coaxial cylindrical cavities; the first hollow limiting column is arranged inside the first main body cavity, and an annular first main body groove is arranged on the outer side of the first main body cavity; an annular second main body groove is arranged on the outer side of the second main body cavity; a central guiding hole is arranged in the middle of the pressure sensing main body, and the central guiding hole communicates with the first main body cavity and the second main body cavity and is coaxial with them.

5. The test tooling according to claim 4, characterized in that Wherein, The pressure-sensitive diaphragm is hermetically arranged in the first main body groove through the second fixing ring; a first disc is arranged in the middle of the pressure-sensitive diaphragm, and a second disc is arranged at the end of the first force transmission rod on the side close to the pressure-sensitive diaphragm, and the first disc is fixedly connected to the second disc; the first force transmission rod is a solid cylinder and is in clearance fit with the central guide hole; the first force transmission rod passes through the central guide hole and abuts against the first elastic column; the pressure-bearing fixing column is fixed in the second main body groove, a first elastic column is arranged on the inner side of the pressure-bearing fixing column facing inwards, and the first elastic column is arranged inside the second main body cavity; a through first optical fiber perforation is arranged inside the first elastic column; a through optical fiber guide hole is arranged on the second main body; the diameter of the optical fiber guide hole is larger than the diameter of the first optical fiber perforation and the two are coaxially arranged.

6. The test tooling according to claim 5, characterized in that, Among them, A spring is arranged inside the first hollow limiting column, and the spring is sleeved on the outer side of the first force transmission rod and abuts against the second disc and the inner wall of the first main body cavity.

7. The test tooling according to claim 6, characterized in that Among them, The sealing circular plate includes a first circular fixing plate, a second circular fixing plate, a second hollow limiting column, and a second elastic column; the diameter of the first circular fixing plate is larger than the diameter of the second circular fixing plate, and the diameter of the second circular fixing plate matches the inner diameter of the sensor main body; the first circular fixing plate is fixedly arranged at one end of the sensor main body; a second elastic column is arranged inside the second hollow limiting column; a through second optical fiber perforation is arranged inside the second elastic column, and a through groove is opened at the position of the second hollow limiting column corresponding to the second optical fiber perforation; a second force transmission rod is arranged on the outer side of the pressure-bearing fixing column facing outwards; the second force transmission rod abuts against the second elastic column; a rectangular groove is arranged on the second circular fixing plate, a fiber leading-through hole communicating with the outside is arranged on the first circular fixing plate, and the rectangular groove communicates with the fiber leading-through hole.

8. The test tooling according to claim 7, characterized in that, Among them, A first pressure-sensitive grating and a second pressure-sensitive grating are arranged on the pressure-sensitive optical fiber; the first pressure-sensitive grating is arranged inside the first optical fiber perforation, and the second pressure-sensitive grating is arranged inside the second optical fiber perforation; the reflection wavelengths of the first pressure-sensitive grating and the second pressure-sensitive grating are different.

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