Hollow sealing tape fatigue test device

Abstract

The utility model relates to a fatigue test device for a hollow sealing tape. When the hollow sealing tape works and the pressure of a sealing medium or the pre-tightening force of a sealing structure is changed, the hollow sealing tape can generate cyclic deformation and stress to cause fatigue damage. The compression device comprises a first compression mechanism and a second compression mechanism, the second compression mechanism is arranged on one side of the first compression mechanism, and a compression deformation cavity is formed between the first compression mechanism and the second compression mechanism; a to-be-tested sealing tape is arranged on the first compression mechanism, and a sealing part of the sealing tape is located in the compression deformation cavity; the first compression mechanism and the second compression mechanism are respectively connected with the compression fatigue movement equipment, and the compression fatigue movement equipment drives the first compression mechanism and the second compression mechanism to do relative reciprocating motion so as to change the size of the compression deformation cavity. The utility model designs a fatigue test device for a hollow sealing tape, which is used for evaluating the durability of the sealing tape.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing component testing, in particular to a hollow sealing belt fatigue testing device. Background Art

[0002] A seal is a component used to prevent fluid or solid particles from leaking from a sealing gap, or to prevent foreign matter from invading a sealing system. There are many types of seals, which can be divided into contact seals and non-contact seals according to their structural form and working principle. Contact seals refer to seals that form a seal by generating pressure through contact between two or more relatively moving sealing surfaces, such as gaskets, O-rings, oil seals, etc. Non-contact seals refer to seals that do not contact two or more relatively moving sealing surfaces, but generate a sealing effect through other means, such as mechanical seals, magnetic seals, gas seals, etc.

[0003] Hollow sealing belt is a contact seal. Its structural feature is that a certain number of hollow holes are opened on a metal or non-metal material belt of a certain thickness, thereby forming a sealing belt with a certain elasticity. The hollow sealing belt has the advantages of good sealing performance, high temperature resistance, high pressure resistance, corrosion resistance, and wear resistance. It is suitable for various complex sealing occasions, such as aircraft engines, high-speed trains, turbines, nuclear power plants, etc.

[0004] When the hollow sealing belt is working, it will be subjected to the pressure from the sealing medium and the preload from the sealing structure, thus generating deformation and stress; when the pressure of the sealing medium or the preload of the sealing structure changes, the hollow sealing belt will generate cyclic deformation and stress, thus causing fatigue damage; fatigue damage refers to the process in which the material performance deteriorates and fails due to the generation and expansion of micro cracks under the action of cyclic loads; fatigue damage is one of the main factors affecting the service life and reliability of the hollow sealing belt, therefore, fatigue testing of the hollow sealing belt is an important means to evaluate its performance and life.

[0005] At present, there is a lack of a device specifically for performing fatigue tests on hollow sealing belts. Summary of the invention

[0006] The utility model aims to provide a hollow sealing belt fatigue test device to solve the problem that the hollow sealing belt in the prior art lacks a dedicated fatigue test device.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A hollow sealing belt fatigue test device, the test device comprising a first compression mechanism and a second compression mechanism, the second compression mechanism is arranged on one side of the first compression mechanism, and a compression deformation cavity is formed between the first compression mechanism and the second compression mechanism;

[0009] The sealing belt to be tested is arranged on the first compression mechanism, and the sealing portion of the sealing belt is located in the compression deformation cavity;

[0010] The first compression mechanism and the second compression mechanism are respectively connected to a compression fatigue motion device, and the compression fatigue motion device drives the first compression mechanism and the second compression mechanism to move back and forth relative to each other, thereby changing the size of the compression deformation cavity.

[0011] Furthermore, the first compression mechanism includes an upper compression structure and an upper connecting interface, the upper compression structure is a plate-shaped structure, a sealing belt placement groove is provided along the inner side of its lower end edge, the sealing belt placement groove is provided with a clamping seat, the sealing belt is inserted into the upper compression structure through the clamping seat, and the upper connecting interface is fixedly connected to the upper compression structure through the upper connecting seat.

[0012] Furthermore, the second compression mechanism includes a lower compression structure and a lower connecting interface, the lower compression structure includes an inclined platform located at the lower part and a pressure plate located at the upper part, the inclined surface of the inclined platform matches the lower end edge of the upper compression structure, and the lower connecting interface is fixedly connected to the inclined platform through a lower connecting seat.

[0013] Furthermore, the lower edge of the upper compression structure is arc-shaped.

[0014] Furthermore, the upper connecting seat and the lower connecting seat are both angle steels with L-shaped cross-sections.

[0015] Furthermore, the upper connection interface and the lower connection interface are both connected to the compression fatigue motion device via pins.

[0016] Furthermore, a plurality of air holes are provided on the upper compression structure, and the air holes are arranged at equal intervals along the sealing belt placement groove.

[0017] Furthermore, the sealing belt is an arc-shaped hollow sealing belt.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0019] 1. The hollow sealing belt fatigue test device designed by the utility model installs the sealing belt in the compression deformation cavity formed between the first compression mechanism and the second compression mechanism, and the first compression mechanism and the second compression mechanism are fixedly connected to the compression fatigue motion device through the upper connecting interface and the lower connecting interface respectively. The compression fatigue motion device drives the first compression mechanism and the second compression mechanism to move back and forth relative to each other. By simulating the linear trajectory, installation form and structural form of the mechanism movement, the sealing belt is fatigue tested to verify its durability, thereby evaluating the durability of the overall product.

[0020] 2. The hollow sealing belt fatigue test device designed by the utility model involves a first compression mechanism and a second compression mechanism, and the whole machine has a simple structure and is easy to process.

[0021] 3. The utility model adopts a straight line track to verify the mechanism closing process of the sealing belt when it is used for the cabin door. The provided compression fatigue motion device drives the first compression mechanism and the second compression mechanism to move back and forth relative to each other in the horizontal direction to perform fatigue test on the sealing belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a front view of an embodiment of the utility model;

[0024] Figure 2 yes Figure 1 Side view of

[0025] Figure 3 yes Figure 1 A top view of

[0026] The symbols in the figure are:

[0027] 1-first compression mechanism, 101-upper connection interface, 102-upper connection seat, 103-upper compression structure, 104-sealing belt placement groove, 105-card seat, 106-air hole;

[0028] 2-second compression mechanism, 201-lower connecting interface, 202-lower connecting seat, 203-lower compression structure; 3-sealing belt. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0030] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "bottom", "inner", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, 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 invention.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connection" and "setting" should be understood in a broad sense, for example, it can be fixed connection, setting, or detachable connection, setting, or integral connection, setting. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Meanwhile, in the description of the present invention, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance. Of course, such objects can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0033] Example:

[0034] like Figure 1-Figure 3 The utility model provides a hollow sealing belt fatigue test device, including a first compression mechanism 1 and a second compression mechanism 2, the second compression mechanism 2 is arranged on one side of the first compression mechanism 1, and a compression deformation cavity is formed between the first compression mechanism 1 and the second compression mechanism 2.

[0035] The sealing belt 3 to be tested is arranged on the first compression mechanism 1, and the sealing portion of the sealing belt 3 is located in the compression deformation cavity. The first compression mechanism 1 and the second compression mechanism 2 move relative to each other to perform a fatigue test on the sealing belt 3.

[0036] The sealing belt 3 is an arc-shaped hollow sealing belt.

[0037] Furthermore, the first compression mechanism 1 includes an upper compression structure 103 and an upper connection interface 101 , and the upper connection interface 101 is fixedly connected to the upper compression structure 103 via an upper connection seat 102 .

[0038] The bottom of the upper connection interface 101 is fixedly connected to the upper connection seat 102 by means of screws, and the upper connection seat 102 is fixedly connected to the upper compression structure 103 by means of bolts.

[0039] The upper connecting seat 102 is an angle steel with an L-shaped cross section.

[0040] The upper compression structure 103 is a plate-shaped structure, and the lower edge is arc-shaped. A sealing belt placement groove 104 is provided along the inner side of the lower edge. A clamping seat 105 is provided in the sealing belt placement groove 104, and the sealing belt 3 is inserted into the upper compression structure 103 through the clamping seat 105.

[0041] The sealing belt placement groove 104 is arc-shaped, the clamping seat 105 is Ω-shaped, and the bottom of the clamping seat 105 is fixed in the sealing belt placement groove 104 by bolts.

[0042] The second compression mechanism 2 includes a lower compression structure 203 and a lower connection interface 201 .

[0043] The lower compression structure 203 includes an inclined platform at the bottom and a pressure plate at the top. The inclined surface of the inclined platform matches the arc edge at the lower end of the upper compression structure 103 . The lower connection interface 201 is fixedly connected to the inclined platform through the lower connection seat 202 .

[0044] The bottom of the lower connection interface 201 is fixedly connected to the lower connection seat 202 by screws, and the lower connection seat 202 is fixedly connected to the ramp by bolts.

[0045] The lower connecting seat 202 is an angle steel with an L-shaped cross section.

[0046] In order to provide power to the first compression mechanism 1 and the second compression mechanism 2, the upper connecting interface 101 and the lower connecting interface 201 are connected to the compression fatigue motion device through pins. The compression fatigue motion device drives the first compression mechanism 1 and the second compression mechanism 2 to move back and forth relative to each other, changes the size of the compression deformation cavity, squeezes and deforms the sealing belt 3, and thus performs a fatigue test on the sealing belt 3.

[0047] The first compression mechanism 1 and the second compression mechanism 2 are connected to a compression fatigue motion device, and the fatigue durability of the sealing belt 3 is verified by simulating the linear trajectory, installation form and structural form of the mechanism movement.

[0048] The upper compression structure 103 and the lower compression structure 203 are consistent with the mechanism required for verification.

[0049] The position where the upper compression structure 103 cooperates with the lower compression structure 203 transmits the force value under the motion trajectory through the upper connection interface 101 and the lower connection interface 201, and the cooperation position is consistent with the linear trajectory of the mechanism movement.

[0050] Furthermore, a plurality of air holes 106 are provided on the upper compression structure 103 to release the pressure generated during the fatigue test and ensure safety during the test.

[0051] The air holes 106 are arranged at equal intervals along the sealing belt placement groove 104 .

[0052] The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. For those skilled in the art of the present invention, some simple deductions, deformations or substitutions can be made based on the idea of ​​the present invention.

Claims

1. A hollow sealing belt fatigue test device, characterized in that: The test device comprises a first compression mechanism (1) and a second compression mechanism (2), wherein the second compression mechanism (2) is arranged on one side of the first compression mechanism (1), and a compression deformation cavity is formed between the first compression mechanism (1) and the second compression mechanism (2); The sealing belt (3) to be tested is arranged on the first compression mechanism (1), and the sealing portion of the sealing belt (3) is located in the compression deformation cavity; The first compression mechanism (1) and the second compression mechanism (2) are respectively connected to a compression fatigue motion device, and the compression fatigue motion device drives the first compression mechanism (1) and the second compression mechanism (2) to move back and forth relative to each other, thereby changing the size of the compression deformation cavity.

2. A hollow sealing belt fatigue test device according to claim 1, characterized in that: The first compression mechanism (1) comprises an upper compression structure (103) and an upper connection interface (101); the upper compression structure (103) is a plate-shaped structure, and a sealing belt placement groove (104) is provided along the inner side of its lower end edge; the sealing belt placement groove (104) is provided with a clamping seat (105); the sealing belt (3) is inserted into the upper compression structure (103) through the clamping seat (105); and the upper connection interface (101) is fixedly connected to the upper compression structure (103) through the upper connection seat (102).

3. A hollow sealing belt fatigue test device according to claim 2, characterized in that: The second compression mechanism (2) comprises a lower compression structure (203) and a lower connection interface (201), wherein the lower compression structure (203) comprises an inclined platform at the bottom and a pressure plate at the top, wherein the inclined surface of the inclined platform matches the lower edge of the upper compression structure (103), and the lower connection interface (201) is fixedly connected to the inclined platform via a lower connection seat (202).

4. A hollow sealing belt fatigue test device according to claim 3, characterized in that: The lower edge of the upper compression structure (103) is arc-shaped.

5. A hollow sealing belt fatigue testing device according to claim 2 or 3, characterized in that: The upper connecting seat (102) and the lower connecting seat (202) are both angle steels with L-shaped cross-sections.

6. A hollow sealing belt fatigue test device according to claim 2 or 3, characterized in that: The upper connection interface (101) and the lower connection interface (201) are both connected to the compression fatigue motion device via pins.

7. A hollow sealing belt fatigue test device according to claim 2, characterized in that: A plurality of air holes (106) are provided on the upper compression structure (103), and the air holes (106) are arranged at equal intervals along the sealing belt placement groove (104).

8. The hollow sealing belt fatigue test device according to claim 1, characterized in that: The sealing belt (3) is an arc-shaped hollow sealing belt.

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