Tool for testing fatigue life of diaphragm capsule

Abstract

The utility model relates to a tool for a diaphragm capsule fatigue life test, which comprises a rack, a helium mass spectrometer leak detector, a tool and a helium cylinder, the helium mass spectrometer leak detector is connected with one side of the top of the tool through a leak detection connecting pipe, and the helium cylinder is connected with one side, close to the bottom, of the right side of the tool through a helium inlet pipe; the top of the diaphragm capsule is placed on the top of the tool body and is pressed through the tool upper cover above the diaphragm capsule. And a driving shaft at the front end of the driving motor is in contact with the bottom of a diaphragm capsule in the tool body through a driving crankshaft mechanism and can perform pulling and pressing reciprocating motion on the diaphragm capsule. The device can accurately measure the fatigue life of the diaphragm capsule, and is high in automation degree and good in stability.

Description

Technical Field

[0001] The utility model relates to the technical field related to membrane boxes, and in particular to a tooling for a membrane box fatigue life test. Background Art

[0002] As the core component of the sensor and dynamic sealing structure, the fatigue life of the diaphragm box determines the quality of its components. Therefore, in the early stage of research and development and during mass production, the fatigue life of the diaphragm box needs to be sampled to ensure that the life of the diaphragm box meets the standard.

[0003] The current conventional technical method is to set a certain number of fatigue times, conduct a certain number of fatigue tests through a mechanism, and then detect whether the diaphragm box is leaking after the fatigue test. This is often time-consuming and labor-intensive, and cannot accurately determine the fatigue life.

[0004] In view of the above-mentioned defects, the designers have actively carried out research and innovation in order to create a tooling for diaphragm box fatigue life testing to make it more valuable for industrial use. Utility Model Content

[0005] In order to solve any of the above technical problems, the purpose of the utility model is to provide a tool for membrane box fatigue life test.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A tooling for a membrane box fatigue life test comprises a frame, a helium mass spectrometer leak detector, a tooling and a helium gas cylinder. The tooling for accommodating the membrane box is arranged on the frame, the helium mass spectrometer leak detector is arranged on the left side of the frame, the helium mass spectrometer leak detector is connected to the top side of the tooling through a leak detection connecting pipe, and the helium gas cylinder is connected to the right side of the tooling near the bottom through a helium gas inlet pipe;

[0008] The tooling includes a tooling cover and a tooling body from top to bottom. The top of the membrane box is placed on the top of the tooling body and is pressed by the tooling cover above.

[0009] A driving motor is installed at the rear end of the frame through a motor mounting frame. A driving shaft at the front end of the driving motor contacts the bottom of the membrane box in the tooling body through a driving crank mechanism and can perform pulling and pressing reciprocating motion on the membrane box.

[0010] As a further improvement of the utility model, a first sealing ring is installed between the top of the membrane box and the upper tooling cover and between the top of the membrane box and the lower tooling body.

[0011] As a further improvement of the utility model, the crankshaft mechanism includes a first drive shaft and a second drive shaft from back to front, the drive shaft at the front end of the drive motor is connected to the rear end of the first drive shaft, crank blocks are provided at the front end of the first drive shaft and the rear end of the second drive shaft, a connecting shaft is provided between the two crank blocks, the collar at the bottom of the jacking shaft is sleeved on the connecting shaft below, and the top of the jacking shaft is mounted on the tooling body through a sealing structure.

[0012] As a further improvement of the utility model, a counter mounting frame is provided on the frame at the front end of the second driving shaft, the front end of the second driving shaft is mounted on the top of the counter mounting frame, and a counter is mounted on the counter mounting frame below the second driving shaft.

[0013] As a further improvement of the present invention, the sealing structure includes two sealing components from top to bottom, and the structural composition of the two sealing components is the same and the details are arranged in a mirror-image distribution; the sealing component includes a bearing, a bearing pressure ring and a sealing ring pressure ring, a bearing is installed on the tooling body on the outside of the jacking shaft, a bearing pressure ring is installed on the tooling body on the outside of the bearing, and a plurality of second sealing rings are evenly distributed on the inner side of the bearing pressure ring along the vertical direction.

[0014] As a further improvement of the utility model, a sealing ring spacer is installed between adjacent second sealing rings.

[0015] As a further improvement of the present invention, a third sealing ring is installed between the bearing pressure ring and the inner tooling body.

[0016] As a further improvement of the utility model, a bearing spacer is installed between the two bearings.

[0017] As a further improvement of the utility model, the bearing is a linear bearing.

[0018] By means of the above solution, the utility model has at least the following advantages:

[0019] The utility model can accurately measure the fatigue life of the membrane box, has a high degree of automation and good stability.

[0020] The utility model has the advantages of simple structure, convenient use, low cost and strong operability.

[0021] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 This is a structural schematic diagram of a tooling for a membrane box fatigue life test of the utility model;

[0024] Figure 2 yes Figure 1 Structural diagram of the middle crankshaft mechanism;

[0025] Figure 3 yes Figure 2 A schematic diagram of the structure of the first drive shaft and the second drive shaft;

[0026] Figure 4 yes Figure 2 Schematic diagram of the structure of the middle lifting shaft;

[0027] Figure 5 yes Figure 1 A partial enlarged structural diagram of the middle film box, the tooling cover and the tooling body;

[0028] Figure 6 yes Figure 1 Schematic diagram of the installation structure between the middle lifting shaft and the tooling body.

[0029] The meanings of the various reference numerals in the figures are as follows.

[0030] Frame 1, motor mounting frame 2, drive motor 3, helium mass spectrometer leak detector 4, crankshaft mechanism 5, counter mounting frame 6, counter 7, leak detection connecting pipe 8, tooling 9, diaphragm box 10, helium cylinder 11, helium inlet pipe 12, first drive shaft 13, second drive shaft 14, lifting shaft 15, crank block 16, connecting shaft 17, collar 18, tooling upper cover 19, tooling body 20, first sealing ring 21, bearing 22, bearing pressure ring 23, sealing ring pressure ring 24, second sealing ring 25, sealing ring spacer 26, third sealing ring 27, bearing spacer 28. DETAILED DESCRIPTION

[0031] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0032] In order to make the technical personnel in the technical field better understand the scheme of the utility model, the technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model usually described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model for protection, but only represents the selected embodiment of the utility model. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the utility model.

[0033] Example

[0034] like Figure 1 to Figure 6 As shown,

[0035] A tooling for a membrane box fatigue life test comprises a frame 1, a helium mass spectrometer leak detector 4, a tooling 9 and a helium cylinder 11. The tooling 9 for accommodating a membrane box 10 is arranged on the frame 1, the helium mass spectrometer leak detector 4 is arranged on the left side of the frame 1, the helium mass spectrometer leak detector 4 is connected to a top side of the tooling 9 through a leak detection connecting pipe 8, and the helium cylinder 11 is connected to a right side of the tooling 9 near the bottom through a helium inlet pipe 12.

[0036] 1. Installation structure of the inner membrane box 10 of the tooling 9:

[0037] The tooling 9 includes a tooling cover 19 and a tooling body 20 from top to bottom. The top of the membrane box 10 is placed on the top of the tooling body 20 and pressed by the upper tooling cover 19. A first sealing ring 21 is installed between the top of the membrane box 10 and the upper tooling cover 19 and between the top of the membrane box 10 and the lower tooling body 20.

[0038] 2. Structure for reciprocating tension and compression of the membrane box 10:

[0039] 1. A driving motor 3 is installed at the rear end of the frame 1 through a motor mounting frame 2. The driving shaft at the front end of the driving motor 3 contacts the bottom of the membrane box 10 located in the tooling body 20 through a driving crank mechanism 5 and can pull and press the membrane box 10 to perform reciprocating motion.

[0040] 2. One structure of the crank mechanism 5: The crank mechanism 5 includes a first drive shaft 13 and a second drive shaft 14 from back to front, the drive shaft at the front end of the drive motor 3 is connected to the rear end of the first drive shaft 13, a crank block 16 is provided at the front end of the first drive shaft 13 and the rear end of the second drive shaft 14, a connecting shaft 17 is provided between the two crank blocks 16, a collar 18 at the bottom of the jacking shaft 15 is sleeved on the connecting shaft 17 below, and the top of the jacking shaft 15 is mounted on the tooling body 20 through a sealing structure.

[0041] In addition, the crankshaft mechanism 5 can also be other common transmission structures such as gears and gear plates.

[0042] 3. A counter mounting frame 6 is provided on the frame 1 at the front end of the second drive shaft 14, the front end of the second drive shaft 14 is mounted on the top of the counter mounting frame 6, and a counter 7 is mounted on the counter mounting frame 6 below the second drive shaft 14. The counting principle of the counter 7 may be a structure in which an induction sheet is mounted on the second drive shaft 14 and a sensor is mounted on the counter mounting frame 6, or other counting structures.

[0043] 3. The sealing structure includes two sealing components from top to bottom, and the structural composition of the two sealing components is the same and the details are arranged in a mirror image distribution:

[0044] 1. The sealing assembly includes a bearing 22, a bearing pressure ring 23 and a sealing ring pressure ring 24. The bearing 22 is installed on the tooling body 20 outside the jacking shaft 15, and the bearing pressure ring 23 is installed on the tooling body 20 outside the bearing 22. A plurality of second sealing rings 25 are evenly distributed along the vertical direction on the inner side of the bearing pressure ring 23, and a sealing ring spacer 26 is installed between adjacent second sealing rings 25. A third sealing ring 27 is installed between the bearing pressure ring 23 and the inner tooling body 20.

[0045] 2. A bearing spacer 28 is installed between two bearings 22, and the above-mentioned bearings 22 are linear bearings.

[0046] This device detects the leakage of the diaphragm box in the process of fatigue of the diaphragm box in real time by means of helium mass spectrometry leak detection, and can measure the fatigue life of the diaphragm box more accurately. The specific scheme is to fix and seal the diaphragm box 10 through the tooling 9, introduce a certain amount (or small pressure) of helium outside the diaphragm box 10, and then use the crank mechanism 5 to perform a fatigue test of reciprocating tension and compression on the diaphragm box 10, and install a counter 7 on the crank mechanism 5 for counting processing. At the same time, a helium mass spectrometer leak detector 4 is connected to the outside of the diaphragm box 10 for vacuuming and real-time helium mass spectrometer leak detection. Once the diaphragm box 10 is found to be fatigue damaged or other abnormal damage conditions, the leak detector will detect the corresponding leakage rate, and at the same time stop the fatigue tester, and record the data on the counter, which is the number of fatigue life.

[0047] The traditional diaphragm box fatigue test tool sets a certain fatigue life (number of times), performs a certain number of fatigue tests through the mechanism, and then performs a destructive test. The cycle is long and the measurement accuracy is low. The utility model can solve the problem of accurately measuring the batch life of the diaphragm boxes mentioned above.

[0048] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0049] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, it can be an electrical connection, it can be a direct connection, it can be an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A tool for a membrane box fatigue life test, comprising a frame (1), a helium mass spectrometer leak detector (4), a tool (9) and a helium gas cylinder (11), wherein the tool (9) for accommodating a membrane box (10) is arranged on the frame (1), the helium mass spectrometer leak detector (4) is arranged on the left side of the frame (1), the helium mass spectrometer leak detector (4) is connected to the top side of the tool (9) through a leak detection connecting pipe (8), and the helium gas cylinder (11) is connected to the right side of the tool (9) near the bottom through a helium gas inlet pipe (12); Features: The tooling (9) comprises, from top to bottom, a tooling cover (19) and a tooling body (20), the top of the membrane box (10) being placed on the top of the tooling body (20) and being pressed by the tooling cover (19) above; A drive motor (3) is mounted on the rear end of the frame (1) via a motor mounting frame (2); a drive shaft at the front end of the drive motor (3) contacts the bottom of a membrane box (10) located in a tooling body (20) via a drive crank mechanism (5) and can perform reciprocating pulling and pressing motions on the membrane box (10).

2. A tool for membrane box fatigue life test according to claim 1, characterized in that: A first sealing ring (21) is installed between the top of the membrane box (10) and the upper tooling cover (19) and between the top of the membrane box (10) and the lower tooling body (20).

3. A tool for membrane box fatigue life test according to claim 1, characterized in that: The crankshaft mechanism (5) includes a first drive shaft (13) and a second drive shaft (14) from back to front, the drive shaft at the front end of the drive motor (3) is connected to the rear end of the first drive shaft (13), a crank block (16) is provided at the front end of the first drive shaft (13) and at the rear end of the second drive shaft (14), a connecting shaft (17) is provided between the two crank blocks (16), a collar (18) at the bottom of the lifting shaft (15) is sleeved on the connecting shaft (17) below, and the top of the lifting shaft (15) is mounted on the tooling body (20) through a sealing structure.

4. A tool for membrane box fatigue life test as claimed in claim 3, characterized in that: A counter mounting frame (6) is arranged on the frame (1) at the front end of the second drive shaft (14); the front end of the second drive shaft (14) is mounted on the top of the counter mounting frame (6); and a counter (7) is mounted on the counter mounting frame (6) below the second drive shaft (14).

5. A tool for membrane box fatigue life test as claimed in claim 3, characterized in that: The sealing structure comprises two sealing components in sequence from top to bottom, and the structural composition of the two sealing components is the same and the details are arranged in a mirror image distribution; the sealing component comprises a bearing (22), a bearing pressure ring (23) and a sealing ring pressure ring (24), the bearing (22) is installed on the tooling body (20) outside the jacking shaft (15), the bearing pressure ring (23) is installed on the tooling body (20) outside the bearing (22), and a plurality of second sealing rings (25) are evenly distributed along the vertical direction on the inner side of the bearing pressure ring (23).

6. A tool for membrane box fatigue life test as claimed in claim 5, characterized in that: A sealing ring spacer (26) is installed between adjacent second sealing rings (25).

7. A tool for membrane box fatigue life test as claimed in claim 5, characterized in that: A third sealing ring (27) is installed between the bearing pressure ring (23) and the inner tooling body (20).

8. A tool for membrane box fatigue life test as claimed in claim 5, characterized in that: A bearing spacer (28) is installed between the two bearings (22).

9. A tool for membrane box fatigue life test as claimed in claim 5, characterized in that: The bearing (22) is a linear bearing.

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