Sealing structure and method for testing wide-temperature pressure sensor

Abstract

The invention discloses a sealing structure and method for wide-temperature pressure sensor testing, and relates to the technical field of pressure sensor testing. A high-strength locking mechanism is formed by the elastic assembly, the sleeve and the plugging ball, rapid and efficient disassembly and assembly operation can be achieved, and then the testing efficiency is improved; the plugging ball is matched with the through hole and the second groove, so that the locking function of the movable part is realized, and the stability of the sealing structure in the testing process is ensured; the limiting component arranged on the clamping groove can prevent the sleeve and the plugging bead from falling off due to loss of limitation; the clearance fit between the lower convex cavity and the movable part ensures the stable movement of the movable part in the body, and reduces the risk of leakage. During testing, locking and unlocking of the movable part are achieved through simple sleeve pressing and loosening actions, testing operation is facilitated, and the testing efficiency is improved; through cooperation of the plugging bead, the through hole and the second groove, an efficient and stable sealing effect is achieved, and the problem that the wide-temperature pressure sensor is prone to leakage during testing is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure sensor testing, and in particular to a sealing structure and method for wide-temperature pressure sensor testing. Background Art

[0002] Pressure sensors are key components in many fields such as modern industrial production, military industry, aerospace, water conservancy and hydropower, railway transportation, and petroleum. Their importance is self-evident. This type of sensor converts the pressure signal it senses into an electrical signal through pressure-sensitive materials, thereby achieving accurate measurement and control of pressure. In conventional fields such as industrial control, water conservancy and hydropower, and railway transportation, the application of pressure sensors has matured, and their operating temperature range is mostly concentrated between -40℃ and 125℃.

[0003] With the continuous innovation of technology and the continuous expansion of application fields, special industries such as aerospace, petrochemicals and oil wells have increasingly stringent requirements for pressure sensors. In these fields, sensors must not only be able to withstand extreme working environments, such as higher temperature ranges (-55°C to 150°C), but also have excellent quality and reliability. Therefore, the demand for wide-temperature pressure sensors is increasing day by day, and the requirements for their quality and reliability are also increasing, and their testing work is also particularly important.

[0004] In the testing of wide temperature pressure sensors, direct application of pressure may cause damage to the sensor, especially under high pressure or extreme conditions. At this time, the application of test media is particularly important. The test medium not only reduces the risks caused by direct application of pressure, but also ensures that the sensor is tested under simulated real working conditions, thereby verifying its performance and accuracy. As a medium for pressure transmission, the test medium can provide a stable and uniform pressure field, buffer and disperse the pressure, allowing the sensor to measure pressure more accurately while protecting the sensor from direct impact. In addition, the test medium prevents direct contact between the sensor and the test equipment, reducing the risk of wear and damage.

[0005] The test medium of current wide temperature pressure sensors is usually liquid or gas. Therefore, in a high-pressure test environment, a sealed environment is crucial to prevent leakage of the test medium and ensure the accuracy of the test results. It can not only protect the sensor from external influences and ensure measurement accuracy, but also extend the service life of the sensor and meet the needs of special application scenarios. Therefore, when testing pressure sensors, the sealing effect of the test environment must be fully considered.

[0006] On the one hand, the sealed environment can not only effectively prevent dust, oil and other impurities in the air from entering the sensor, avoiding contamination of sensitive components and thus affecting measurement accuracy and stability; it can also ensure that the test medium stably transmits pressure inside the sensor, avoiding pressure fluctuations caused by external environmental interference, thereby improving measurement accuracy. On the other hand, the sealed environment can control the operating temperature of the sensor to a certain extent and reduce measurement errors caused by temperature changes, which is especially important for sensors that need to work within a wide temperature range.

[0007] However, the current traditional wide-temperature pressure sensor testing method usually involves screwing the sensor onto the test fixture through threads, and then tightening the test fixture onto the test bench. In order to improve the sealing performance, an elastic gasket is usually assembled on the front section of the pressure sensor, and then the sensor is tightened with a wrench. This method has the following problems: the test bench is generally placed in a high and low temperature box, which is extremely inconvenient to operate in the limited space of the high and low temperature box, and it is also easy to damage the appearance of the sensor. At the same time, if there is a leak between the sensor and the test fixture or between the test fixture and the test bench, the sensor needs to be completely disassembled to check the leak point and reinstalled, which is time-consuming and labor-intensive, affecting the test efficiency.

[0008] Therefore, how to design a more efficient, convenient and reliable sealing structure for testing wide temperature pressure sensors has become a technical problem that technicians in this field need to solve urgently. Summary of the invention

[0009] The object of the present invention is to provide a sealing structure and method for wide temperature pressure sensor testing to overcome the shortcomings of the above-mentioned traditional technology.

[0010] The present invention solves the above technical problems through the following technical solutions: A sealing structure for testing a wide temperature pressure sensor, comprising a body, a movable part and a sleeve; The upper part of the body is a downward convex cavity, the upper part of the body is provided with a card slot, the card slot is provided with a limit component, the lower part of the body is provided with a support part, the upper part of the support part is provided with an elastic component, a plurality of through holes are provided on the body between the elastic component and the limit component, and blocking beads are provided in the through holes, and the diameter of the blocking beads is greater than the depth of the through holes; The movable part includes a first-level downward convex structure and a second-level downward convex structure from top to bottom. The upper part of the first-level downward convex structure is provided with a first groove along the axial direction, which is used to fix and connect the wide temperature pressure sensor during testing. The lower part of the first-level downward convex structure is provided with a second groove along the circumferential direction. The second groove corresponds to the position of the through hole one by one. A limiting block is provided on the side of the through hole close to the second groove to prevent the blocking bead from falling into the downward convex cavity. The lower part of the first-level downward convex structure and the second-level downward convex structure are in clearance with the downward convex cavity. A communicating medium channel is provided in the middle of the main body and the movable part; A first annular protrusion is provided in the middle of the inner wall of the sleeve; the lower part of the first annular protrusion is located above the elastic component, and the upper part of the first annular protrusion is located below the limiting component; When the sleeve is pressed down, a portion of the blocking bead that is equal to the depth of the through hole in the horizontal direction is located in the through hole, and another portion is located above the first annular protrusion; when the sleeve is restored, a portion of the blocking bead that is equal to the depth of the through hole in the horizontal direction is located in the through hole, and another portion is located in the second groove. A further improvement of the present invention is that a connecting portion is provided at the bottom of the body, the body is fixedly connected to the test bench through the connecting portion, and a medium channel connected to the body is provided in the middle of the connecting portion.

[0011] A further improvement of the present invention is that the fixed connection is carried out by welding.

[0012] A further improvement of the present invention is that a third groove is provided at the lower part of the second-stage downward convex structure, and a high-temperature resistant sealing ring is provided in the third groove.

[0013] A further improvement of the present invention is that the outer wall of the sleeve is provided with knurling for providing friction.

[0014] A further improvement of the present invention is that the second groove is a trapezoidal groove.

[0015] A further improvement of the present invention is that the limiting component is a clip spring and the elastic component is a spring.

[0016] A further improvement of the present invention is that the number of through holes is 4 to 6.

[0017] A further improvement of the present invention is that an internal thread is provided on the first groove, and the wide temperature pressure sensor is fixedly connected to the movable part via the internal thread.

[0018] A method for testing a wide temperature pressure sensor, using the above structure, comprises the following steps: Fixing a plurality of bodies on a test bench, and fixing the wide temperature pressure sensor to be tested to the first groove of the movable part; Press the sleeve downward so that a portion of the sealing bead in the horizontal direction is located in the through hole and the other portion is located above the first annular protrusion, and press the movable part on which the wide temperature pressure sensor to be measured is installed into the body; Loosen the sleeve, and under the action of the elastic component, the sleeve rebounds, and the first annular protrusion of the sleeve squeezes the sealing bead, so that a part of the sealing bead in the horizontal direction is located in the through hole, and the other part is located in the second groove, thereby completing the locking of the movable part and realizing the sealing of the test environment for testing; when the test is completed, press down the sleeve again to take out the movable part.

[0019] Compared with the prior art, the positive and progressive effects of the present invention are: The sealing structure provided by the present invention forms a high-strength locking mechanism through an elastic component, a sleeve and a sealing bead, which can realize fast and efficient disassembly and assembly operations, thereby improving the test efficiency; the cooperation between the sealing bead, the through hole and the second groove realizes the locking function of the movable part, ensuring the stability of the sealing structure during the test; the limiting component arranged on the slot can prevent the sleeve and the sealing bead from falling off due to loss of limiting; the clearance between the lower convex cavity and the movable part ensures the stable movement of the movable part inside the main body, while reducing the risk of leakage.

[0020] Furthermore, the design of the connection part enables the main body to be firmly fixed on the test bench, preventing movement or shaking during the test. At the same time, it enables flexible series and parallel combinations on the test bench, thereby greatly increasing the number of tests in each batch and optimizing the test process.

[0021] Furthermore, the high temperature resistant sealing ring in the third groove works in coordination with the sealing structure to further enhance the sealing effect, reduce the leakage probability of the wide temperature pressure sensor during the test, and ensure the accuracy and reliability of the test.

[0022] Furthermore, when a certain pressure needs to be applied to lock the movable part, the knurling on the outer wall of the sleeve enables the user to operate the sleeve more conveniently.

[0023] Furthermore, the second groove is designed as a trapezoidal groove, which facilitates the entry and locking of the blocking bead and provides a stable locking effect.

[0024] Furthermore, the retaining spring acts as a limiting component to ensure the stability of the movable part in the correct position; the spring acts as an elastic component to provide the necessary rebound force so that the sleeve can automatically rebound and lock the movable part after being released.

[0025] Furthermore, the number of through holes is 4 to 6, which provides sufficient locking points, ensures stable locking of the movable parts, and at the same time ensures the compressive strength, avoiding the structural complexity that may be caused by too many through holes.

[0026] Furthermore, the internal thread design of the first groove enables the wide temperature pressure sensor to be firmly fixed on the movable part, thereby preventing it from falling off or loosening during the test process.

[0027] The method provided by the present invention can achieve locking and unlocking of the movable part through simple pressing down and releasing of the sleeve, which is convenient for test operation and improves test efficiency; by utilizing the cooperation of the sealing bead, the through hole and the second groove, an efficient and stable sealing effect is achieved, solving the problem that the wide temperature pressure sensor is prone to leakage during testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings in the specification are used to provide further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0029] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic diagram of the top view structure of the present invention; Figure 3 It is a cross-sectional schematic diagram of the movable part of the present invention; Figure 4 is a cross-sectional schematic diagram of the sleeve of the present invention; Figure 5 It is a cross-sectional schematic diagram of the main body of the present invention; Figure 6 A cross-sectional schematic diagram of the present invention in an assembled state; Figure 7 A cross-sectional schematic diagram of the present invention when it is ready for assembly; Figure 8 It is a schematic diagram of the present invention when used on a test bench; Fig. 9 It is a detailed enlarged schematic diagram of the through hole in the present invention.

[0030] Among them, 1 is the body, 1-1 is the downward convex cavity, 1-2 is the slot, 1-3 is the limiting component, 1-4 is the supporting part, 1-5 is the elastic component, 1-6 is the through hole, 1-7 is the blocking bead, and 1-8 is the limiting block; 2 is a movable part, 2-1 is a first-stage downward convex structure, 2-11 is an upper portion of the first-stage downward convex structure, 2-12 is a lower portion of the first-stage downward convex structure, 2-2 is a second-stage downward convex structure, 2-21 is a lower portion of the second-stage downward convex structure, 2-3 is a first groove, 2-4 is a second groove, 2-5 is a third groove, and 2-6 is a high temperature resistant sealing ring; 3 is a sleeve, 3-1 is a first annular protrusion, and 3-2 is a knurling; 4 is a medium channel, 5 is a connecting piece, and 6 is a test bench. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0035] In addition, it should be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments, which are intended to explain the present invention rather than to limit it.

[0037] See also Figure 1 , a sealing structure for wide temperature pressure sensor testing, characterized in that it includes a body 1, a movable part 2 and a sleeve 3; See also Figure 5 The upper part of the main body 1 is a lower convex cavity 1-1, a card slot 1-2 is provided on the upper part of the main body 1, a limiting component 1-3 is provided on the card slot 1-2, a supporting part 1-4 is provided on the lower part of the main body 1, an elastic component 1-5 is provided above the supporting part 1-4, a plurality of through holes 1-6 are provided on the main body 1 between the elastic component 1-5 and the limiting component 1-3, a sealing bead 1-7 is provided in the through hole 1-6, and the diameter of the sealing bead 1-7 is greater than the depth of the through hole 1-6; See also Figure 3The movable member 2 includes a first-stage downward convex structure 2-1 and a second-stage downward convex structure 2-2 from top to bottom. The upper portion 2-11 of the first-stage downward convex structure is provided with a first groove 2-3 along the axial direction for fixing and connecting the wide temperature pressure sensor during testing. The lower portion 2-12 of the first-stage downward convex structure is provided with a second groove 2-4 along the circumferential direction. The second groove 2-4 corresponds to the position of the through hole 1-6 one by one. A limit block 1-8 is provided on one side of the through hole 1-6 close to the second groove 2-4. See Fig. 9 , used to prevent the plugging beads from falling off into the downward convex cavity 1-1, the lower part 2-12 of the first-level downward convex structure and the second-level downward convex structure 2-2 are clearance-matched with the downward convex cavity 1-1; See also Figure 2 , a communicating medium channel 4 is provided in the middle of the main body 1 and the movable member 2; See also Figure 4 A first annular protrusion 3-1 is provided in the middle of the inner wall of the sleeve 3; the lower part of the first annular protrusion 3-1 is located above the elastic component 1-5, and the upper part of the first annular protrusion 3-1 is located below the limiting component 1-3; See also Figure 6 and Figure 7 When the sleeve 3 is pressed down, a part of the sealing bead 1-7 which is equal to the depth of the through hole 1-6 in the horizontal direction is located in the through hole 1-6, and the other part is located above the first annular protrusion 3-1; when the sleeve 3 is restored, a part of the sealing bead 1-7 which is equal to the depth of the through hole 1-6 in the horizontal direction is located in the through hole 1-6, and the other part is located in the second groove 2-4.

[0038] In a specific embodiment of the present invention, the blocking beads 1-7 are steel balls.

[0039] The sealing structure provided by the present invention forms a high-strength locking mechanism through an elastic component, a sleeve and a sealing bead, which can realize fast and efficient disassembly and assembly operations, thereby improving the test efficiency; the cooperation between the sealing bead, the through hole and the second groove realizes the locking function of the movable part, ensuring the stability of the sealing structure during the test; the limiting component arranged on the slot can prevent the sleeve and the sealing bead from falling off due to loss of limiting; the clearance between the lower convex cavity and the movable part ensures the stable movement of the movable part inside the main body, while reducing the risk of leakage.

[0040] Preferably, a connecting portion 5 is provided at the bottom of the main body 1, and the main body 1 is fixedly connected to the test bench 6 through the connecting portion 5, and a medium channel 4 connected to the main body 1 is provided in the middle of the connecting portion 5; the design of the connecting portion enables the main body to be firmly fixed on the test bench, preventing movement or shaking during the test, and at the same time, enables the test bench to be flexibly connected in series and parallel, thereby greatly increasing the number of tests in each batch and optimizing the test process.

[0041] Specifically, the fixed connection method is welding.

[0042] Preferably, the lower part 2-21 of the second-stage convex structure is provided with a third groove 2-5, and a high-temperature resistant sealing ring 2-6 is provided in the third groove 2-5; the high-temperature resistant sealing ring in the third groove works in coordination with the sealing structure to further enhance the sealing effect, reduce the leakage probability of the wide temperature pressure sensor during the test, and ensure the accuracy and reliability of the test.

[0043] In a specific embodiment of the present invention, the outer wall of the sleeve 3 is provided with knurling 3-2 for providing friction; when a certain pressure needs to be applied to lock the movable part, the knurling on the outer wall of the sleeve enables the user to operate the sleeve more conveniently.

[0044] In a specific embodiment of the present invention, the second groove 2-4 is a trapezoidal groove; the second groove is designed as a trapezoidal groove, which is convenient for the entry and locking of the blocking bead and provides a stable locking effect.

[0045] In a specific embodiment of the present invention, the limiting component 1-3 is a retaining spring, and the elastic component 1-5 is a spring; the retaining spring serves as a limiting component to ensure the stability of the movable part in the correct position; the spring serves as an elastic component to provide the necessary rebound force, so that the sleeve can automatically rebound and lock the movable part after being released.

[0046] Preferably, the number of through holes 1-6 is 4 to 6, which provides sufficient locking points to ensure stable locking of the movable parts, while ensuring compressive strength and avoiding the structural complexity that may be caused by too many through holes.

[0047] In a specific embodiment of the present invention, an internal thread is provided on the first groove 2-3, and the wide temperature pressure sensor is fixedly connected to the movable part 2 via the internal thread; the internal thread design of the first groove enables the wide temperature pressure sensor to be firmly fixed on the movable part, preventing it from falling off or loosening during the test process.

[0048] A method for testing a wide temperature pressure sensor, using the above structure, includes the following steps: Fix several bodies 1 on the test bench 6, and fix the wide temperature pressure sensor to be tested into the first groove 2-3 of the movable part 2; Press down the sleeve 3 so that a part of the sealing bead 1-7 in the horizontal direction is located in the through hole 1-6 and the other part is located above the first annular protrusion 3-1, and press the movable part 2 with the wide temperature pressure sensor to be tested installed into the body 1; Release the sleeve 3. Under the action of the elastic component 1-5, the sleeve 3 rebounds. The first annular protrusion 3-1 of the sleeve 3 squeezes the sealing bead 1-7, so that a part of the sealing bead 1-7 in the horizontal direction is located in the through hole 1-6, and the other part is located in the second groove 2-4, thereby completing the locking of the movable part 2 and realizing the sealing of the test environment for testing. When the test is completed, press down the sleeve 3 again to take out the movable part 2.

[0049] The sealing method provided by the present invention can achieve locking and unlocking of the movable part through simple pressing down and loosening of the sleeve, which is convenient for test operation and improves test efficiency; by utilizing the cooperation of the sealing bead, the through hole and the second groove, an efficient and stable sealing effect is achieved, solving the problem that the wide temperature pressure sensor is prone to leakage during testing.

[0050] Finally, it should be noted that the above-listed embodiments exist only as one or more specific forms of expression of the technical solution of the present invention. Their purpose is to clearly explain the concept, principle and application of the present invention through specific examples, and it is by no means intended to limit the protection scope of the present invention to these specific embodiments. In fact, the real value of the present invention lies in the technical ideas and innovations it proposes, rather than its form of expression or means of implementation.

[0051] For ordinary technicians in the relevant technical field, after in-depth reading and understanding of the technical solution of the present invention, they are fully capable of making various forms of changes, modifications or equivalent substitutions to the specific implementation methods of the invention based on their own professional knowledge and skills. These changes may include but are not limited to: adjusting the value range of technical parameters, optimizing algorithm processes to improve efficiency, replacing some technical components to achieve better compatibility or reduce costs, etc. As long as these changed technical solutions still substantially maintain the technical features claimed for protection by the original invention, that is, they can still achieve the core functions and effects of the present invention, then these changes should be deemed to fall within the scope of protection of the pending claims of the present invention.

[0052] In addition, with the continuous progress and development of technology, new technical means and methods continue to emerge, which also provides broad space for further improvement and perfection of the present invention. Therefore, the protection scope of the present invention should also include those reasonably foreseeable improvements and extensions based on the existing technology. As long as these improvements and extensions do not deviate from the basic principles and core concepts of the present invention, they should be regarded as equivalents of the present invention and are also protected by patent rights.

Claims

1. A sealing structure for wide temperature pressure sensor testing, characterized in that: It comprises a main body (1), a movable part (2) and a sleeve (3); The upper part of the body (1) is a downward convex cavity (1-1), the upper part of the body (1) is provided with a slot (1-2), a limit component (1-3) is provided on the slot (1-2), the lower part of the body (1) is provided with a support part (1-4), an elastic component (1-5) is provided above the support part (1-4), a plurality of through holes (1-6) are provided on the body (1) between the elastic component (1-5) and the limit component (1-3), a sealing bead (1-7) is provided in the through hole (1-6), and the diameter of the sealing bead (1-7) is greater than the depth of the through hole (1-6); The movable part (2) comprises, from top to bottom, a first-stage downward convex structure (2-1) and a second-stage downward convex structure (2-2); the upper part (2-11) of the first-stage downward convex structure is provided with a first groove (2-3) along the axial direction for fixedly connecting a wide temperature pressure sensor during testing; the lower part (2-12) of the first-stage downward convex structure is provided with a second groove (2-4) along the circumferential direction; the positions of the second groove (2-4) and the through hole (1-6) correspond one to one; a limiting block (1-8) is provided on a side of the through hole (1-6) close to the second groove (2-4) for preventing the blocking bead from falling into the downward convex cavity (1-1); the lower part (2-12) of the first-stage downward convex structure and the second-stage downward convex structure (2-2) are clearance-matched with the downward convex cavity (1-1); A communicating medium channel (4) is provided in the middle of the main body (1) and the movable member (2); A first annular protrusion (3-1) is provided in the middle of the inner wall of the sleeve (3); the lower part of the first annular protrusion (3-1) is located above the elastic component (1-5), and the upper part of the first annular protrusion (3-1) is located below the limiting component (1-3); When the sleeve (3) is pressed down, a portion of the sealing bead (1-7) that is equal to the depth of the through hole (1-6) in the horizontal direction is located in the through hole (1-6), and another portion is located above the first annular protrusion (3-1); when the sleeve (3) is restored, a portion of the sealing bead (1-7) that is equal to the depth of the through hole (1-6) in the horizontal direction is located in the through hole (1-6), and another portion is located in the second groove (2-4).

2. A sealing structure for wide temperature pressure sensor testing according to claim 1, characterized in that: A connecting portion (5) is provided at the bottom of the body (1), the body (1) is fixedly connected to the test bench (6) via the connecting portion (5), and a medium channel (4) communicating with the body (1) is provided in the middle of the connecting portion (5).

3. A sealing structure for wide temperature pressure sensor testing according to claim 2, characterized in that: The fixed connection method is welding.

4. The sealing structure for wide temperature pressure sensor testing according to claim 1, characterized in that: The lower part (2-21) of the second-stage downward convex structure is provided with a third groove (2-5), and a high-temperature resistant sealing ring (2-6) is provided in the third groove (2-5).

5. The sealing structure for wide temperature pressure sensor testing according to claim 1, characterized in that: The outer wall of the sleeve (3) is provided with knurling (3-2) for providing friction force.

6. The sealing structure for wide temperature pressure sensor testing according to claim 1, characterized in that: The second groove (2-4) is a trapezoidal groove.

7. The sealing structure for wide temperature pressure sensor testing according to claim 1, characterized in that: The limiting component (1-3) is a clip spring, and the elastic component (1-5) is a spring.

8. The sealing structure for wide temperature pressure sensor testing according to claim 1, characterized in that: The number of through holes (1-6) is 4 to 6.

9. The sealing structure for wide temperature pressure sensor testing according to claim 1, characterized in that: The first groove (2-3) is provided with an internal thread, and the wide temperature pressure sensor is fixedly connected to the movable part (2) via the internal thread.

10. A method for testing a wide temperature pressure sensor, characterized in that: The sealing structure according to any one of claims 1 to 9 is adopted, comprising the following steps: Fixing a plurality of bodies (1) on a test bench (6), and fixing a wide temperature pressure sensor to be tested in a first groove (2-3) of a movable part (2); The sleeve (3) is pressed downward so that a portion of the sealing bead (1-7) in the horizontal direction is located in the through hole (1-6) and another portion is located above the first annular protrusion (3-1), and the movable part (2) on which the wide temperature pressure sensor to be measured is installed is pressed into the body (1); The sleeve (3) is released, and under the action of the elastic component (1-5), the sleeve (3) rebounds, and the first annular protrusion (3-1) of the sleeve (3) squeezes the blocking bead (1-7), so that a part of the blocking bead (1-7) in the horizontal direction is located in the through hole (1-6) and the other part is located in the second groove (2-4), thereby completing the locking of the movable part (2), achieving the sealing of the test environment, and conducting the test; when the test is completed, the sleeve (3) is pressed down again to remove the movable part (2).

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