A sealing device for combustion chamber test displacement mechanism

Abstract

The utility model relates to the technical field of sealing, and specifically discloses a sealing device for a combustion chamber test displacement mechanism, including a combustion chamber pipe, a mounting hook is installed on the outer circumferential surface of the combustion chamber pipe; a shell is installed between the inner side of the mounting hook and the outer circumferential surface of the combustion chamber pipe, and a first airbag is arranged on the inner side of the shell; a side of the first airbag away from the shell fits with the outer circumferential surface of the combustion chamber pipe; a displacement mechanism is installed from the outer side of the left end of the mounting hook to the inside of the combustion chamber pipe; a second airbag is arranged on the circumferential surface of the displacement mechanism and is located inside the combustion chamber pipe, and the left side of the second airbag can fit with the inner wall of the combustion chamber pipe. Under the structure of the shell and the first airbag, the outer circumferential surface of the combustion chamber can be blocked; and then, under the action of the hinge plate, the second airbag, the near-air hole 31 and other structures, the surroundings of the internal displacement mechanism of the combustion chamber can be sealed.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing, in particular to a sealing device for testing a displacement mechanism of a combustion chamber. Background Art

[0002] In the test of gas turbine combustion chamber components, in order to carry out detailed measurement of outlet parameters, it is often necessary to install the test sensing part on the displacement mechanism, and realize detailed scanning of the outlet plane through translation or rotation of the displacement mechanism. Since the combustion chamber test pipeline contains high-temperature and high-pressure gas, in order to ensure the reliable operation of the displacement mechanism, the action device of the displacement mechanism is generally placed outside the test pipeline, which puts high requirements on the sealing between the displacement mechanism and the gas pipeline.

[0003] For example, a Chinese patent (Announcement No.: CN204941701U) discloses a sealing device for a combustion chamber test displacement mechanism to solve the problems of traditional sealing devices having complex structures, difficult assembly and disassembly, and unstable sealing effects.

[0004] The above patent can only seal on the circumferential surface outside the combustion chamber when sealing, and because the displacement mechanism will move, the above patent can only seal on the outer side, which is prone to poor sealing effect. In addition, during the sealing process, since the displacement mechanism will move, the single-layer seal is prone to leakage.

[0005] Therefore, a sealing device for a combustion chamber test displacement mechanism is proposed. Summary of the invention

[0006] The purpose of the utility model is to provide a sealing device for testing the displacement mechanism of a combustion chamber, which can seal the outer circumferential surface of the combustion chamber under the structure of the outer shell and the first airbag; and then the internal displacement mechanism of the combustion chamber can be sealed around under the action of the hinge plate, the second airbag, the near-air hole 31 and other structures; thereby, with the cooperation of the above-mentioned structure, the double-layer sealing of the combustion chamber sealing mechanism can be achieved to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned object, the utility model provides the following technical solutions: a sealing device for a combustion chamber test displacement mechanism, comprising a combustion chamber pipe, wherein a mounting hook is installed on the outer circumferential surface of the combustion chamber pipe;

[0008] A shell is installed between the inner side of the installation hook and the outer circumferential surface of the combustion chamber pipe, and a first air bag is arranged on the inner side of the shell;

[0009] A side surface of the first airbag away from the shell is in contact with the outer circumferential surface of the combustion chamber pipe;

[0010] A displacement mechanism is installed from the outer side of the left end of the mounting hook to the inside of the combustion chamber pipe;

[0011] A second airbag is arranged on the circumferential surface of the displacement mechanism and located inside the combustion chamber pipe, and the left side surface of the second airbag can fit with the inner wall of the combustion chamber pipe.

[0012] Preferably, a threaded column is rotatably mounted on the outer circumferential surface of the shell, and a mounting column is fixedly mounted on the inner side of the mounting hook at the left end of the threaded column.

[0013] Preferably, a threaded groove is formed on the right end surface of the installation column outside the opening, and the left end of the threaded column is rotatably installed inside the threaded column.

[0014] Preferably, an air hole 31 is provided from the left end of the displacement mechanism to the inside, the displacement mechanism is located on a circumferential surface inside the combustion chamber pipe and protrudes outward, a plurality of hinge plates are rotatably installed on the protruding circumferential surface, an air outlet is provided on the left side surface of the protruding position on the circumferential surface of the displacement mechanism, and the right side surface of the second airbag is fixedly connected to the left side surface of the protruding position on the circumferential surface of the displacement mechanism.

[0015] Preferably, the air outlet is communicated with the air near hole opened inside the displacement mechanism, and the right side surface of the second airbag is in a communicated state with the air outlet.

[0016] Preferably, the left end of the displacement mechanism is located outside the mounting hook, a threaded ring is rotatably mounted on the circumferential surface of the displacement mechanism located outside the mounting hook, and a swivel ring is rotatably mounted on the circumferential surface of the threaded ring.

[0017] Preferably, a connecting column is fixedly installed on the circumferential surface of the rotating ring, and springs are fixedly installed on both ends of the connecting column, and one end of the two springs away from the connecting column is fixedly installed on the vertical plate and the left side of the mounting hook. A double-headed threaded column is arranged between the vertical plate and the mounting hook, and adjusting screws are rotatably installed on both ends of the double-headed threaded column, and the ends of the adjusting screws away from each other are respectively installed on the vertical plate and the hinge support, the hinge support and the adjusting screw are rotatably connected, and the hinge support is fixedly installed on the left side of the mounting hook.

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

[0019] 1. Compared with the traditional sealing devices on the market, the utility model can seal the outer circumferential surface of the combustion chamber under the structure of the outer shell and the first airbag; and then the internal displacement mechanism of the combustion chamber can be sealed around under the action of the hinge plate, the second airbag, the near-air hole 31 and other structures; thus, the double-layer sealing of the combustion chamber sealing mechanism can be achieved with the cooperation of the above-mentioned structures.

[0020] 2. This device can compress the second airbag during the movement of the displacement mechanism under the action of double-headed threaded columns, adjusting screws, springs and other structures, so that the second airbag can enhance the sealing effect on the surrounding areas of the displacement mechanism; secondly, the displacement mechanism can be reset and moved under the action of springs and other structures, saving the number of manual adjustments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the main body of the utility model;

[0023] Figure 2 It is a schematic diagram of the installation hook and displacement mechanism of the utility model;

[0024] Figure 3 It is a schematic diagram of the threaded column and the first airbag of the utility model;

[0025] Figure 4 It is a schematic diagram of the displacement mechanism and the second airbag of the utility model;

[0026] Figure 5 It is a schematic diagram of the displacement mechanism and hinge plate of the utility model;

[0027] Description of reference numerals:

[0028] 1. Combustion chamber pipe; 2. Mounting hook; 21. Mounting column; 22. Threaded groove; 23. Threaded column; 24. Housing; 25. First airbag;

[0029] 3. Displacement mechanism; 31. Near-air hole; 32. Threaded ring; 33. Swivel; 331. Connecting column; 34. Spring; 35. Vertical plate; 36. Double-headed threaded column; 37. Adjusting screw; 38. Hinge support; 39. Air outlet;

[0030] 4. Second airbag; 5. Hinge plate. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] See also Figures 1 to 5 , the utility model provides a technical solution:

[0033] A sealing device for a combustion chamber test displacement mechanism comprises a combustion chamber pipe 1, a mounting hook 2 is installed on the outer circumferential surface of the combustion chamber pipe 1, a shell 24 is installed between the inner side of the mounting hook 2 and the outer circumferential surface of the combustion chamber pipe 1, a first airbag 25 is arranged on the inner side of the shell 24, a side of the first airbag 25 away from the shell 24 is in contact with the outer circumferential surface of the combustion chamber pipe 1, a displacement mechanism 3 is installed from the outer side of the left end of the mounting hook 2 to the inside of the combustion chamber pipe 1, a second airbag 4 is arranged on the circumferential surface of the displacement mechanism 3 and located inside the combustion chamber pipe 1, and the left side surface of the second airbag 4 can be in contact with the inner wall of the combustion chamber pipe 1.

[0034] A threaded column 23 is rotatably mounted on the outer circumferential surface of the shell 24, the left end of the threaded column 23 is located on the inner side of the mounting hook 2 and a mounting column 21 is fixedly mounted thereon, the right end face of the mounting column 21 is located on the outer side of the opening and is provided with a threaded groove 22, and the left end of the threaded column 23 is rotatably mounted inside the threaded column 23.

[0035] An air hole 31 is provided from the left end of the displacement mechanism 3 to the inside. The displacement mechanism 3 is located on a circumferential surface inside the combustion chamber pipe 1 and protrudes outward. A plurality of hinge plates 5 are rotatably mounted on the protruding circumferential surface. An air outlet 39 is provided on the left side surface of the protruding position on the circumferential surface of the displacement mechanism 3. The right side surface of the second airbag 4 is fixedly connected to the left side surface of the protruding position on the circumferential surface of the displacement mechanism 3.

[0036] By adopting the above technical solution, when in use, the right end of the mounting hook 2 is fitted together with the outer circumferential surface of the combustion chamber pipe. At this time, the right end of the displacement mechanism 3 is located and extends to the inside of the combustion chamber pipe 1, and the mounting column 21 is fixedly installed on the inner left end of the mounting hook 2 on the outer circumferential surface of the displacement mechanism 3, and the right end face of the mounting column 21 is located at the outer edge of the opening and is provided with a threaded groove 22, and the threaded groove 22 extends to the inside of the mounting column 21, and then, a threaded column 23 is rotatably installed inside the threaded groove 22, and the right end of the threaded column 23 is located on the outside of the threaded groove 22, and the right end of the threaded column 23 is rotatably installed with a shell 24, and at this time, rotating the threaded column 23 can make the shell 24 close to the outer circumferential surface of the combustion chamber pipe 1, and because the threaded column 23 is located on the outside of the displacement mechanism 3, and the shell 24 is slidably installed on the circumferential surface of the displacement mechanism 3, therefore, the shell 24 will not rotate synchronously with the threaded column 23, and the shell A first airbag 25 is fixedly installed on the inner circumferential surface of the outer shell 24, and when the outer shell 24 approaches the circumferential surface of the combustion chamber pipe 1, it can move synchronously with the first airbag 25, so that the first airbag 25 can be fitted together on the outer circumferential surface of the combustion chamber pipe 1, and due to the pressure of the outer shell 24, the first airbag 25 will not move at all; secondly, during use, the near-air hole 31 starts to work, and the second airbag 4 can be expanded under the action of gas, and the hinge plate 5 can be rotated when the second airbag 4 collides, and then, under the action of the displacement mechanism 3, the second airbag 4 can be fitted together with the inner wall of the combustion chamber pipe 1, and under the action of the hinge plate 5, the second airbag 4 can be limited so that the second airbag 4 is between the combustion chamber 1 and the hinge plate 5. Therefore, under the action of the above structure, the inner and outer layers of the combustion chamber pipe 1 can be sealed. Compared with the traditional single-layer sealing, the present device can increase the sealing effect.

[0037] Specifically, Figure 4 As shown, the air outlet 39 is connected with the air near hole 31 opened inside the displacement mechanism 3, the right side surface of the second airbag 4 is in a connected state with the air outlet 39, the left end of the displacement mechanism 3 is located on the outside of the mounting hook 2, and the displacement mechanism 3 is rotatably mounted on the circumferential surface of the outer side of the mounting hook 2, and a swivel 33 is rotatably mounted on the circumferential surface of the threaded ring 32.

[0038] A connecting column 331 is fixedly mounted on the circumferential surface of the rotating ring 33 , and springs 34 are fixedly mounted on both ends of the connecting column 331 . A vertical plate 35 is fixedly mounted on one end of the two springs 34 away from the connecting column 331 .

[0039] A double-headed threaded column 36 is provided between the two vertical plates 35 and the left side of the mounting hook 2, and an adjusting screw 37 is rotatably installed at both ends of the double-headed threaded column 36. The ends of the adjusting screw 37 that are away from each other are respectively installed on the vertical plate 35 and the hinge support 38. The hinge support 38 and the adjusting screw 37 are rotatably connected, and the hinge support 38 is fixedly installed on the left side of the mounting hook 2.

[0040] By adopting the above technical solution, two hinge supports 38 are fixedly installed on the left side surface of the mounting hook 2, and a threaded ring 32 is rotatably installed on the circumferential surface of the left end of the displacement mechanism 3. During use, the threaded ring 32 can rotate, so that it can move synchronously with the rotating ring 33, and during the movement of the rotating ring 33, it can stretch the spring 34. In addition, two connecting columns 331 are fixedly installed on the circumferential surface of the rotating ring 33, and the springs 34 are in a state of two groups, and one end of the adjacent springs 34 is fixedly installed on the connecting column 331 respectively. The two ends of the double-headed threaded column 36 are rotatably installed with an adjusting screw 37 of the same structure at one end of the double-headed threaded column 36 away from the vertical plate 35, and the end of the adjusting screw 37 away from the vertical plate 35 is rotatably connected to the hinge support 38, and the hinge support 38 is fixedly installed on the hinge support 38. The swivel 33 is connected to the spring 34, so that the swivel 33 is stretched, so that the swivel 33 is under the action of the spring 34, and the displacement mechanism 3 moves to the left, and the swivel 33 and the spring 34 are reset under the action of the swivel 33 and the spring 34, so that the displacement mechanism 3 can be reset, and the threaded ring 32 can adjust the position of the right end of the displacement mechanism 3 during use, so that the hinge plate 5 can compress the second airbag 4, so that The second airbag 4 can fit more closely with the inner wall of the combustion chamber pipe 1; and during use, due to the different pressures inside the combustion chamber pipe 1, the distance moved by the displacement mechanism 3 will be different, and under the action of the threaded ring 32, the displacement mechanism 3 can be adjusted in time, so that the length of the displacement mechanism 3 inside the combustion chamber pipe 1 can be adjusted, so that the hinge plate 5 on the circumferential surface of the displacement mechanism 3 can compress the second airbag 4 in time, so that the second airbag 4 can maintain a good working state, thereby avoiding poor internal sealing effect.

[0041] Working principle: First, the mounting hook 2 is fitted together with the outer circumferential surface of the combustion chamber pipe 1, and then, the threaded column 23 is rotated, and the threaded column 23 will bring the outer shell 24 gradually close to the outer circumferential surface of the combustion chamber pipe 1, so that the outer shell 24 can bring the first airbag 25 to fit together with the outer circumferential surface of the combustion chamber pipe 1.

[0042] Secondly, during use, the outside world inputs gas into the interior of the second airbag 4 through the near air hole 31, causing the second airbag 4 to expand, and then the hinge plate 5 will rotate outward, and then the displacement mechanism 3 can move to the left under the action of the threaded ring 32, so that the second airbag 4 and the hinge plate 5 can move synchronously, and the second airbag 4 can be compressed under the action of the combustion chamber pipe 1 and the hinge plate 5, so that the second airbag 4 and the inner wall of the combustion chamber pipe 1 fit more closely.

[0043] In addition, under the action of the threaded column 23 and the adjusting screw 37, the displacement mechanism 3 can be fitted in time, so that the displacement mechanism 3 can be suitable for different pressure differences.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A sealing device for a combustion chamber test displacement mechanism, comprising a combustion chamber pipeline (1), characterized in that: A mounting hook (2) is mounted on the outer circumferential surface of the combustion chamber pipe (1); A shell (24) is installed between the inner side of the installation hook (2) and the outer circumferential surface of the combustion chamber pipe (1), and a first air bag (25) is arranged on the inner side of the shell (24); A side surface of the first air bag (25) away from the housing (24) is in contact with the outer circumferential surface of the combustion chamber pipe (1); A displacement mechanism (3) is installed from the outer side of the left end of the installation hook (2) to the inside of the combustion chamber pipe (1); A second airbag (4) is provided on the circumferential surface of the displacement mechanism (3) and is located inside the combustion chamber pipe (1); the left side surface of the second airbag (4) can fit with the inner wall of the combustion chamber pipe (1).

2. A sealing device for a combustion chamber test displacement mechanism according to claim 1, characterized in that: A threaded column (23) is rotatably mounted on the outer circumferential surface of the housing (24), and a mounting column (21) is fixedly mounted on the inner side of the mounting hook (2) at the left end of the threaded column (23).

3. A sealing device for a combustion chamber test displacement mechanism according to claim 2, characterized in that: The right end surface of the installation column (21) is located outside the opening and is provided with a thread groove (22), and the left end of the threaded column (23) is rotatably installed inside the threaded column (23).

4. The sealing device for a combustion chamber test displacement mechanism according to claim 1, characterized in that: An air hole (31) is provided from the left end of the displacement mechanism (3) to the inside. The displacement mechanism (3) is located on a circumferential surface inside the combustion chamber pipe (1) and protrudes outward. A plurality of hinge plates (5) are rotatably mounted on the protruding circumferential surface. An air outlet (39) is provided on the left side surface of the protruding position on the circumferential surface of the displacement mechanism (3). The right side surface of the second airbag (4) is fixedly connected to the left side surface of the protruding position on the circumferential surface of the displacement mechanism (3).

5. The sealing device for a combustion chamber test displacement mechanism according to claim 4, characterized in that: The air outlet (39) is connected to the air near hole (31) opened inside the displacement mechanism (3), and the right side surface of the second airbag (4) is in a connected state with the air outlet (39).

6. The sealing device for a combustion chamber test displacement mechanism according to claim 1, characterized in that: The left end of the displacement mechanism (3) is located outside the mounting hook (2), a threaded ring (32) is rotatably mounted on the circumferential surface of the displacement mechanism (3) located outside the mounting hook (2), and a rotating ring (33) is rotatably mounted on the circumferential surface of the threaded ring (32).

7. The sealing device for a combustion chamber test displacement mechanism according to claim 6, characterized in that: A connecting column (331) is fixedly mounted on the circumferential surface of the rotating ring (33), springs (34) are fixedly mounted on both ends of the connecting column (331), and a vertical plate (35) is fixedly mounted on one end of the two springs (34) away from the connecting column (331).

8. The sealing device for a combustion chamber test displacement mechanism according to claim 1, characterized in that: A double-headed threaded column (36) is provided between the two vertical plates (35) and the left side of the mounting hook (2), and an adjusting screw (37) is rotatably mounted on both ends of the double-headed threaded column (36), and the ends of the adjusting screw (37) that are away from each other are respectively mounted on the vertical plate (35) and the hinge support (38), and the hinge support (38) and the adjusting screw (37) are rotatably connected, and the hinge support (38) is fixedly mounted on the left side of the mounting hook (2).

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