Sealing device of combustion chamber testing displacement mechanism

Abstract

The utility model discloses a sealing device of a combustion chamber testing displacement mechanism, which belongs to the technical field of combustion chamber testing and comprises a gas pipeline, a mounting seat is arranged on the outer side of the gas pipeline, a through hole is formed in the end face of the mounting seat, a mounting disc is mounted on the end face of the mounting seat, and a sealing mechanism is arranged on the mounting disc. The sealing mechanism is sleeved with a displacement moving rod. In the utility model, when the mounting seat and the mounting disc are mounted, the inner inserting ring and the inner sealing gasket at the end part of the mounting seat are inserted into the inner inserting groove in the end surface of the mounting disc to form a first seal, and the outer inserting ring and the outer sealing gasket on the end surface of the mounting disc are inserted into the outer inserting groove in the end surface of the mounting seat to form a second seal; and gas in the gas pipeline is prevented from leaking between the mounting base and the mounting disc, and the practicability of the gas pipeline is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of combustion chamber testing, and more specifically to a sealing device for a combustion chamber testing displacement mechanism. 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 actuator 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] After searching, the utility model patent with announcement number CN204941701U discloses a sealing device for a combustion chamber test displacement mechanism to solve the problems of complex structure, difficult disassembly and unstable sealing effect of traditional sealing devices. The sealing device includes a gas pipeline, a mounting seat with a pressure stabilizing chamber, a displacement mechanism and a high-pressure gas supply pipeline; the mounting seat is fixedly installed at the opening position of the pipe wall of the gas pipeline, and the displacement mechanism passes through the pressure stabilizing chamber and extends into the gas pipeline; the mounting seat is connected to a high-pressure gas supply pipeline connected to the pressure stabilizing chamber, and the pressure in the pressure stabilizing chamber is higher than the gas pressure in the gas pipeline; the sealing device for the combustion chamber test displacement mechanism has a simple structure and is easy to disassemble and assemble. A pressure stabilizing chamber and a high-pressure gas supply pipeline are set between the displacement mechanism and the gas pipeline to ensure that the pressure in the pressure stabilizing chamber is greater than the pressure in the gas pipeline, so that high-pressure air flows into the gas pipeline, which can effectively prevent the leakage of high-temperature and high-pressure gas.

[0004] However, the above patents still have the following shortcomings: the sealing between the mounting seat and the pipeline is not good enough. When the gas overflows from the gap between the mounting seat and the pipeline, the sensor detection accuracy will be inaccurate; and the displacement mechanism and the mounting seat slide against each other, and the sealing of the sliding position is not easy to ensure by relying on the sealing gasket. For this reason, we propose a sealing device for the combustion chamber test displacement mechanism. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a sealing device for a combustion chamber test displacement mechanism.

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

[0007] A sealing device for a combustion chamber test displacement mechanism comprises a gas pipeline, a mounting seat is arranged on the outer side of the gas pipeline, a through hole is arranged on the end face of the mounting seat, a mounting plate is installed on the end face of the mounting seat, a sealing mechanism is arranged on the mounting plate, a displacement moving rod is sleeved on the sealing mechanism, an end of the displacement moving rod passes through the through hole and extends to the inner cavity of the gas pipeline and is fixedly connected with a detection sensor, a gas stabilizing mechanism is arranged on the bottom of the sealing mechanism, an outer slot is arranged on the end face of the mounting seat, an outer plug-in ring is arranged at one end of the mounting plate, an end of the outer plug-in ring is movably sleeved into the inner cavity of the outer slot and is fixedly connected with an outer sealing gasket, an inner slot is arranged at one end of the mounting plate, an inner plug-in ring is arranged on the end face of the mounting seat, an end of the inner plug-in ring is movably sleeved into the inner cavity of the inner slot and is fixedly connected with an inner sealing gasket.

[0008] As a preferred solution of the utility model, the sealing mechanism includes a voltage-stabilizing tube fixedly connected to the other end of the mounting plate, the voltage-stabilizing tube and the mounting plate are respectively provided with sealing grooves, the inner walls of the sealing grooves are respectively fixedly sleeved with sealing rings, the displacement moving rod respectively passes through the inner cavities of the voltage-stabilizing tube and the two sealing grooves, the side surface of the displacement moving rod and the inner side surface of the sealing ring are fitted together, an oil sealing ring is fixedly sleeved on the outer side of the displacement moving rod and located in the inner cavity of the voltage-stabilizing tube, the side surface of the oil sealing ring and the inner wall of the voltage-stabilizing tube are fitted together, elastic rubber rings are respectively fixedly connected between the displacement moving rod and the inner wall of the voltage-stabilizing tube and located on both sides of the oil sealing ring, and oil storage chambers are provided on the inner sides of the two elastic rubber rings.

[0009] As a preferred solution of the utility model, the gas stabilizing mechanism includes external threaded tubes respectively threadedly installed on the bottom of both ends of the pressure-stabilizing tube, the bottom ends of the two external threaded tubes are fixedly connected to protective boxes, the inner cavities of the two protective boxes are provided with high-pressure resistant air bags, and the inlet and outlet of the high-pressure resistant air bags are connected to the bottom ends of the inner cavities of the external threaded tubes.

[0010] As a preferred solution of the utility model, a plurality of screw holes are provided on the end surface of the mounting seat, a plurality of bolts are sleeved on the outer side of the mounting plate, and the ends of the plurality of bolts are respectively threadedly mounted into the inner cavities of the screw holes.

[0011] As a preferred solution of the utility model, the inner wall of the inner slot is in contact with the side surface of the inner insert ring, and the end surface of the inner sealing gasket is in contact with the inner wall of the inner slot.

[0012] As a preferred solution of the utility model, the inner wall of the outer insertion slot is in contact with the side surface of the outer insert ring, and the end surface of the outer sealing gasket is in contact with the inner wall of the outer insertion slot.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] (1) In the utility model, when the mounting seat and the mounting plate are installed, the first seal is formed by inserting the inner insert ring and the inner sealing gasket at the end of the mounting seat into the inner slot of the end face of the mounting plate, and the outer insert ring and the outer sealing gasket at the end face of the mounting plate are inserted into the outer slot of the end face of the mounting seat to form a second seal, thereby preventing the gas in the gas pipeline from leaking from between the mounting seat and the mounting plate, and having good practicality.

[0015] (2) In the utility model, the displacement moving rod and the sealing ring are used to seal the displacement moving rod at both ends of the voltage regulator tube. At the same time, the high-pressure gas on both sides of the inner cavity of the voltage regulator tube and the protective box, the external threaded tube and the high-pressure resistant airbag are used in coordination, so that the gas pressure on both sides of the inner cavity of the voltage regulator tube is higher than the gas pressure in the gas pipeline, and only the high-pressure gas can enter the gas pipeline, thereby sealing. An elastic rubber ring is used to seal the inner cavity of the voltage regulator tube, and the oil in the oil storage chamber forms an oil seal between the oil seal ring and the inner wall of the voltage regulator tube. The sealing quality is ensured by multi-layer sealing, thereby improving the working quality of the sealing device of the combustion chamber test displacement mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is an exploded view of the overall structure of the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of the utility model;

[0019] Figure 4 It is a cross-sectional schematic diagram of the protection box of the utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the voltage regulator tube of the utility model;

[0021] Figure 6 For this utility model Figure 3 A is an enlarged schematic diagram.

[0022] Description of the numbers in the figure:

[0023] 1. Gas pipeline; 2. Mounting seat; 3. Mounting plate; 4. Sealing mechanism; 5. Perforation; 6. Displacement moving rod; 7. Detection sensor; 8. Gas stabilizing mechanism; 9. External slot; 10. External insert ring; 11. External sealing gasket; 12. Internal slot; 13. Internal insert ring; 14. Internal sealing gasket; 15. Voltage-stabilizing tube; 16. Sealing groove; 17. Sealing ring; 18. Oil sealing ring; 19. Elastic rubber ring; 20. Oil storage chamber; 21. Protective box; 22. Externally threaded pipe; 23. High-pressure airbag; 24. Screw hole; 25. Bolt. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings 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.

[0025] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 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.

[0027] Example:

[0028] See also Figure 1-6 A sealing device for a combustion chamber test displacement mechanism comprises a gas pipeline 1, a mounting seat 2 is arranged on the outer side of the gas pipeline 1, a through hole 5 is arranged on the end face of the mounting seat 2, a mounting plate 3 is installed on the end face of the mounting seat 2, a sealing mechanism 4 is arranged on the mounting plate 3, a displacement moving rod 6 is sleeved on the sealing mechanism 4, the end of the displacement moving rod 6 passes through the through hole 5 and extends to the inner cavity of the gas pipeline 1 and is fixedly connected with a detection sensor 7, a gas stabilizing mechanism 8 is arranged at the bottom of the sealing mechanism 4, an outer slot 9 is opened on the end face of the mounting seat 2, an outer plug-in ring 10 is arranged at one end of the mounting plate 3, the end of the outer plug-in ring 10 is movably sleeved into the inner cavity of the outer slot 9 and is fixedly connected with an outer sealing gasket 11, an inner slot 12 is opened at one end of the mounting plate 3, an inner plug-in ring 13 is arranged on the end face of the mounting seat 2, the end of the inner plug-in ring 13 is movably sleeved into the inner cavity of the inner slot 12 and is fixedly connected with an inner sealing gasket 14.

[0029] For details, please refer to Figures 1 to 4The sealing mechanism 4 includes a voltage-stabilizing tube 15 fixedly connected to the other end of the mounting plate 3, and sealing grooves 16 are respectively provided on the voltage-stabilizing tube 15 and the mounting plate 3, and sealing rings 17 are fixedly sleeved on the inner walls of the sealing grooves 16, and the displacement moving rod 6 passes through the inner cavities of the voltage-stabilizing tube 15 and the two sealing grooves 16 respectively, and the side surface of the displacement moving rod 6 fits with the inner side surface of the sealing ring 17, and an oil sealing ring 18 is fixedly sleeved on the outer side of the displacement moving rod 6 and located in the inner cavity of the voltage-stabilizing tube 15, and the side surface of the oil sealing ring 18 fits with the inner wall of the voltage-stabilizing tube 15, and elastic rubber rings 19 are fixedly connected between the displacement moving rod 6 and the inner wall of the voltage-stabilizing tube 15 and located on both sides of the oil sealing ring 18, and an oil storage chamber 20 is provided on the inner side of the two elastic rubber rings 19.

[0030] In this embodiment, sealing oil is provided in the oil storage chamber 20 to ensure that oil is provided between the oil sealing ring 18 and the inner wall of the voltage-stabilizing tube 15 , thereby achieving oil sealing between the oil sealing ring 18 and the voltage-stabilizing tube 15 .

[0031] For details, please refer to Figure 1 and Figure 4 The gas stabilizing mechanism 8 includes external threaded tubes 22 respectively threadedly installed at the bottom of both ends of the pressure-stabilizing tube 15, the bottom ends of the two external threaded tubes 22 are fixedly connected to protective boxes 21, the inner cavities of the two protective boxes 21 are provided with high-pressure resistant airbags 23, and the inlet and outlet of the high-pressure resistant airbags 23 are connected to the bottom end of the inner cavity of the external threaded tube 22.

[0032] In this embodiment, high-pressure gas is provided at both ends of the inner cavity of the high-pressure resistant airbag 23 and the inner cavity of the voltage-stabilizing tube 15, respectively. The external threaded tube 22 and the voltage-stabilizing tube 15 are threadedly connected. The external threaded tube 22 and the protective box 21 can be removed to fill high-pressure gas into both sides of the inner cavity of the voltage-stabilizing tube 15 and the high-pressure resistant airbag 23.

[0033] For details, please refer to Figure 1 and Figure 2 The end surface of the mounting seat 2 is provided with a plurality of screw holes 24 , and the outer side of the mounting plate 3 is sleeved with a plurality of bolts 25 , and the ends of the plurality of bolts 25 are respectively threadedly mounted into the inner cavities of the screw holes 24 .

[0034] In this embodiment, the mounting plate 3 is mounted on the mounting seat 2 by the cooperation between the bolts 25 and the screw holes 24 .

[0035] For details, please refer to Figure 2 , Figure 4 and Figure 6 The inner wall of the inner slot 12 fits with the side surface of the inner insert ring 13 , and the end surface of the inner sealing gasket 14 fits with the inner wall of the inner slot 12 .

[0036] In this embodiment, the sealing between the mounting seat 2 and the mounting plate 3 is ensured by the contact between the inner wall of the inner slot 12 and the inner insert ring 13 and the inner sealing gasket 14 .

[0037] For details, please refer to Figure 2 , Figure 4 and Figure 6 The inner wall of the outer inserting slot 9 is in contact with the side surface of the outer inserting ring 10 , and the end surface of the outer sealing gasket 11 is in contact with the inner wall of the outer inserting slot 9 .

[0038] In this embodiment, the sealing between the mounting seat 2 and the mounting plate 3 is ensured by the contact between the inner wall of the outer inserting slot 9 and the outer sealing gasket 11 and the outer inserting ring 10 .

[0039] Working principle: When in use, first fit the mounting plate 3 onto the end face of the mounting seat 2. At this time, the inner insert ring 13 and the inner sealing gasket 14 at the end of the mounting seat 2 are inserted into the inner slot 12 on the end face of the mounting plate 3. The outer insert ring 10 and the outer sealing gasket 11 on the end face of the mounting plate 3 are inserted into the outer slot 9 on the end face of the mounting seat 2. The multiple bolts 25 on the mounting plate 3 are threadedly installed into the screw holes 24, thereby connecting the mounting seat 2 and the mounting plate 3. At the same time, the sealing between the mounting seat 2 and the mounting plate 3 is ensured. Then, when the displacement moving rod 6 drives the detection sensor 7 in the inner cavity of the gas pipeline 1 to move, the first seal is formed between the sealing ring 17 on the side of the gas pipeline 1 and the displacement moving rod 6. The high-pressure gas in the space near the gas pipeline 1 on the inner cavity of the voltage regulator tube 15 is higher than the gas pressure in the gas pipeline, thereby forming a second layer of sealing. The elastic rubber ring 19 is used to form The third layer of sealing forms an oil seal between the oil sealing ring 18 and the inner wall of the pressure-stabilizing tube 15 through the oil between the elastic rubber ring 19, the inner wall of the pressure-stabilizing tube 15 and the displacement rod 6, thereby forming the fourth layer of sealing. The high-pressure gas on the side of the inner cavity of the pressure-stabilizing tube 15 away from the gas pipeline 1 forms the fifth seal, and the cooperation between the sealing ring 17 and the displacement rod 6 away from the side of the gas pipeline 1 forms the sixth seal. When the displacement rod 6 moves, the high-pressure gas on the side of the inner cavity of the pressure-stabilizing tube 15 close to the gas pipeline 1 is squeezed into the high-pressure resistant airbag 23 in the inner cavity of a protective box 21, and the side of the inner cavity of the pressure-stabilizing tube 15 away from the gas pipeline 1 will draw air from the high-pressure resistant airbag 23 in the other protective box 21, ensuring that both sides of the inner cavity of the pressure-stabilizing tube 15 are always in a high-pressure state. At the same time, the elastic rubber ring 19 is elastic and will not hinder the movement of the displacement rod 6 and the oil sealing ring 18.

[0040] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the utility model according to the technical solution and improved ideas of the utility model, which should be included in the protection scope of the utility model.

Claims

1. A sealing device for a combustion chamber test displacement mechanism, comprising a gas pipeline (1), characterized in that: The outer side of the gas pipeline (1) is provided with a mounting seat (2), the end surface of the mounting seat (2) is provided with a through hole (5), the end surface of the mounting seat (2) is provided with a mounting plate (3), the mounting plate (3) is provided with a sealing mechanism (4), a displacement rod (6) is sleeved on the sealing mechanism (4), the end of the displacement rod (6) passes through the through hole (5) and extends to the inner cavity of the gas pipeline (1) and is fixedly connected to a detection sensor (7), and a gas stabilizing mechanism (7) is provided at the bottom of the sealing mechanism (4). 8), an outer slot (9) is provided on the end surface of the mounting seat (2), an outer insert ring (10) is provided on one end of the mounting plate (3), an end of the outer insert ring (10) is movably sleeved into the inner cavity of the outer slot (9) and is fixedly connected to an outer sealing gasket (11), an inner slot (12) is provided on one end of the mounting plate (3), an inner insert ring (13) is provided on the end surface of the mounting seat (2), an end of the inner insert ring (13) is movably sleeved into the inner cavity of the inner slot (12) and is fixedly connected to an inner sealing gasket (14).

2. A sealing device for a combustion chamber test displacement mechanism according to claim 1, characterized in that: The sealing mechanism (4) comprises a voltage-stabilizing tube (15) fixedly connected to the other end of the mounting plate (3), the voltage-stabilizing tube (15) and the mounting plate (3) are respectively provided with sealing grooves (16), the inner walls of the sealing grooves (16) are respectively fixedly sleeved with sealing rings (17), the displacement rod (6) respectively penetrates the inner cavities of the voltage-stabilizing tube (15) and the two sealing grooves (16), the side surface of the displacement rod (6) and the inner side surface of the sealing ring (17) are in contact with each other, an oil seal ring (18) is fixedly sleeved on the outer side of the displacement rod (6) and located in the inner cavity of the voltage-stabilizing tube (15), the side surface of the oil seal ring (18) and the inner wall of the voltage-stabilizing tube (15) are in contact with each other, elastic rubber rings (19) are respectively fixedly connected between the displacement rod (6) and the inner wall of the voltage-stabilizing tube (15) and located on both sides of the oil seal ring (18), and oil storage chambers (20) are provided on the inner sides of the two elastic rubber rings (19).

3. A sealing device for a combustion chamber test displacement mechanism according to claim 2, characterized in that: The gas stabilizing mechanism (8) comprises externally threaded tubes (22) respectively threadedly mounted on the bottom of both ends of the pressure stabilizing tube (15); the bottom ends of the two externally threaded tubes (22) are fixedly connected to a protective box (21); the inner cavities of the two protective boxes (21) are provided with a high-pressure resistant airbag (23); the inlet and outlet of the high-pressure resistant airbag (23) are connected to the bottom end of the inner cavity of the externally threaded tube (22).

4. The sealing device for a combustion chamber test displacement mechanism according to claim 1, characterized in that: The end surface of the mounting seat (2) is provided with a plurality of screw holes (24), the outer side of the mounting plate (3) is sleeved with a plurality of bolts (25), and the ends of the plurality of bolts (25) are respectively threadedly mounted in the inner cavities of the screw holes (24).

5. The sealing device for a combustion chamber test displacement mechanism according to claim 1, characterized in that: The inner wall of the inner slot (12) is in contact with the side surface of the inner insert ring (13), and the end surface of the inner sealing gasket (14) is in contact with the inner wall of the inner slot (12).

6. The sealing device for a combustion chamber test displacement mechanism according to claim 1, characterized in that: The inner wall of the outer inserting slot (9) is in contact with the side surface of the outer inserting ring (10), and the end surface of the outer sealing gasket (11) is in contact with the inner wall of the outer inserting slot (9).

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