CN219284668U

CN219284668U - High-temperature high-pressure measuring pipe sealing structure for combustion chamber test of gas turbine

Info

Publication number: CN219284668U
Application number: CN202320327663.9U
Authority: CN
Inventors: 刘佳琦; 王辉; 孙中伟; 梁培培; 陈奕嘉; 李飞; 张春梅; 王丽红; 赵俊明
Original assignee: Harbin Turbine Co Ltd; Hadian Power Equipment National Engineering Research Center Co Ltd
Current assignee: Harbin Turbine Co Ltd; Hadian Power Equipment National Engineering Research Center Co Ltd
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2023-06-30
Anticipated expiration: 2033-02-28

Abstract

A high-temperature high-pressure piezometer tube sealing structure for a combustion chamber test of a combustion engine belongs to the technical field of piezometer tube sealing structures. The utility model solves the problems that the sealing effect of the pressure measuring pipe sealing structure of the existing test case is common, and the sealing structure is required to be damaged or even the pressure measuring pipe is damaged in each inspection. The utility model comprises a sealing cutting sleeve, a sealing ring, a screw cap and a silver-based brazing area, wherein the sealing cutting sleeve penetrates out of the interior of a combustion chamber casing cover and is arranged on the combustion chamber casing cover, the screw cap is connected with the sealing cutting sleeve in a matched manner, the screw cap is arranged on the outer side of the combustion chamber casing cover, the sealing cutting sleeve is provided with the sealing ring, the sealing ring is arranged between the sealing cutting sleeve and the inner side wall of the combustion chamber casing cover, a pressure measuring pipe is arranged on the inner side of the combustion chamber casing cover, the pressure measuring pipe penetrates out of the combustion chamber casing cover through the sealing cutting sleeve, and the silver-based brazing area is arranged in the sealing cutting sleeve. The utility model has simple structure and good sealing effect, is convenient for repeated disassembly and assembly, improves the recycling rate of the pressure measuring tube and reduces the test cost.

Description

High-temperature high-pressure measuring pipe sealing structure for combustion chamber test of gas turbine

Technical Field

The utility model belongs to the technical field of pressure measuring tube sealing structures, and particularly relates to a high-temperature high-pressure measuring tube sealing structure for a combustion chamber test of a combustion engine.

Background

The gas turbine combustion chamber needs to go through the high temperature high pressure test process in the research and development process, and the pressure of different positions of the combustion chamber needs to be monitored in real time in the test process, and the pressure signal receiving end needs to be connected to the PLC control cabinet outside the combustion chamber casing, so that in the high temperature high pressure test, the pressure measuring pipe needs to be led out from the test casing and connected to the outside of the test casing. When the pressure measuring pipe is connected from the inner side of the casing to the outer side of the casing, a sealing structure is required to ensure the air tightness of the test.

Meanwhile, in the test process, the condition that the test piece is detached for inspection exists, the test piece is required to have good detachable performance, the repeated utilization capacity of the test piece is improved, and if the sealing structure is unreasonable, the sealing structure is required to be damaged for each inspection, and even the pressure measuring tube is damaged.

To above-mentioned problem, this application provides a manometric tube seal structure for under gas turbine combustion chamber high temperature high pressure test condition, improves the sealing performance under the combustion chamber high temperature high pressure condition, and under the condition that does not destroy seal structure, can carry out the dismouting repeatedly to the combustion chamber, simple structure improves the experimental work efficiency of gas turbine combustion chamber and manometric tube's reuse rate, reduces test cost.

Disclosure of Invention

The present utility model has been developed to solve the problem that the sealing effect of the sealing structure of the pressure measuring tube of the present test case is general, and each inspection requires breaking the sealing structure and even damaging the pressure measuring tube, and a brief overview of the present utility model is given below in order to provide a basic understanding of some aspects of the present utility model. It should be understood that this summary is not an exhaustive overview of the utility model. It is not intended to identify key or critical elements of the utility model or to delineate the scope of the utility model.

The technical scheme of the utility model is as follows:

the utility model provides a high temperature high pressure piezometer tube seal structure for combustion chamber test, including sealed cutting ferrule, sealing ring, nut and silver-based area of brazing, sealed cutting ferrule wears out to set up on the combustion chamber receiver lid by the inside of combustion chamber receiver lid, the nut is connected with sealed cutting ferrule cooperation, the nut sets up in the outside of combustion chamber receiver lid, be provided with the sealing ring on the sealed cutting ferrule, the sealing ring is arranged between the inside wall of sealed cutting ferrule and combustion chamber receiver lid, the piezometer tube is arranged in the combustion chamber receiver lid inboard, the piezometer tube wears out to the combustion chamber receiver lid outside through sealed cutting ferrule, be provided with silver-based area of brazing in the sealed cutting ferrule.

Further, the sealing ring is an asbestos sealing ring.

Further, the number of the piezometer tubes is more than three.

The utility model has the following beneficial effects:

the high-temperature high-pressure measuring tube sealing structure for the combustion chamber test of the gas turbine can achieve good sealing effect at higher temperature and pressure, is simple in sealing structure, and can be assembled by only installing the sealing clamping sleeve on the combustion chamber box cover and locking the sealing clamping sleeve by the screw cap when the pressure measuring tube is required to be led out of the test box in the high-temperature high-pressure test process, and the screw cap is only required to be detached when the sealing clamping sleeve and the pressure measuring tube are pulled out of the combustion chamber box cover together, so that the pressure measuring tube is not damaged in the disassembly process, the repeated utilization rate of the pressure measuring tube is improved, and the test cost is reduced.

Drawings

FIG. 1 is a schematic view of a sealing structure of a high-temperature and high-pressure measuring tube for a combustion chamber test of a combustion engine.

In the figure, a pressure measuring tube, a 2-sealing clamping sleeve, a 3-sealing ring, a 4-combustor casing cover, a 5-nut and a 6-silver-based brazing area are shown.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the present utility model is described below by means of specific embodiments shown in the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the utility model. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present utility model.

The connection mentioned in the present utility model is divided into a fixed connection and a detachable connection, wherein the fixed connection (i.e. the non-detachable connection) includes, but is not limited to, a conventional fixed connection manner such as a hemmed connection, a rivet connection, an adhesive connection, a welded connection, etc., and the detachable connection includes, but is not limited to, a conventional detachable manner such as a threaded connection, a snap connection, a pin connection, a hinge connection, etc., and when the specific connection manner is not specifically limited, at least one connection manner can be found in the existing connection manner by default, so that the function can be realized, and a person skilled in the art can select the connection according to needs. For example: the fixed connection is welded connection, and the detachable connection is hinged connection.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Embodiment 1, with reference to fig. 1, this embodiment illustrates a high temperature and high pressure piezometer tube seal structure for combustion chamber test of this embodiment, including sealed cutting ferrule 2, sealing ring 3, nut 5 and silver-based brazing area 6, sealed cutting ferrule 2 wears out by the inside of combustion chamber cartridge receiver lid 4 and sets up on combustion chamber cartridge receiver lid 4, nut 5 is connected with sealed cutting ferrule 2 cooperation, and nut 5 sets up in the outside of combustion chamber cartridge receiver lid 4, is provided with sealing ring 3 on sealed cutting ferrule 2, and sealing ring 3 is arranged between sealed cutting ferrule 2 and the inside wall of combustion chamber cartridge receiver lid 4, and piezometer tube 1 is arranged in combustion chamber cartridge receiver lid 4 inboard, and piezometer tube 1 wears out to the combustion chamber cartridge receiver lid 4 outside through sealed cutting ferrule 2, is provided with silver-based brazing area 6 in the sealed cutting ferrule 2.

During installation, firstly, the sealing sleeve 2 is installed on the combustion chamber casing cover 4, one end of the sealing sleeve 2 is provided with an outer edge, which is arranged on the inner side of the combustion chamber casing cover 4, the sealing sleeve 2 is provided with a sealing ring 3, the sealing ring 3 is an asbestos sealing ring, the sealing sleeve 2 is provided with external threads, the external threads of the sealing sleeve 2 are arranged on the outer side of the combustion chamber casing cover 4, after the sealing sleeve 2 is installed, the nut 5 is screwed on the sealing sleeve 2, the nut 5 is connected with the external threads of the sealing sleeve 2 in a matched manner, the sealing ring 3 is tightly adhered between the sealing sleeve 2 and the combustion chamber casing cover 4 by the pretightening force between the nut 5 and the sealing sleeve 2, finally, after a certain distance is stretched out from the sealing sleeve 2, the pressure measuring tube 1 in the test casing is sealed, a silver-based brazing technology is adopted in a silver-based brazing area 6 arranged on the sealing sleeve 2, a welding solution is dissolved in the silver-based brazing area 6, and after the solution is solidified, the pressure measuring tube 1 can be sealed.

During disassembly, the screw cap 5 is disassembled firstly, the sealing clamping sleeve 2 is communicated with the pressure measuring tube 1 and is pulled out from the combustion chamber casing cover 4, and then the disassembly is completed.

The present embodiment is only illustrative of the present patent and does not limit the scope of protection thereof, and those skilled in the art can also change the part thereof, which is within the scope of protection of the present patent without exceeding the spirit of the present patent.

Claims

1. The utility model provides a combustion engine combustor is high temperature high pressure measurement pipe seal structure for experiment which characterized in that: including sealed cutting ferrule (2), sealing ring (3), nut (5) and silver-based area of brazing (6), sealed cutting ferrule (2) are worn out by the inside of combustion chamber machine box lid (4) and are set up on combustion chamber machine box lid (4), nut (5) are connected with sealed cutting ferrule (2) cooperation, nut (5) set up in the outside of combustion chamber machine box lid (4), be provided with sealing ring (3) on sealed cutting ferrule (2), sealing ring (3) are arranged between sealed cutting ferrule (2) and the inside wall of combustion chamber machine box lid (4), pressure measurement pipe (1) are arranged in combustion chamber machine box lid (4) inboard, pressure measurement pipe (1) are worn out to the combustion chamber machine box lid (4) outside through sealed cutting ferrule (2), be provided with silver-based area of brazing (6) in sealed cutting ferrule (2).

2. The high-temperature and high-pressure piezometer tube sealing structure for combustion chamber test of a combustion engine according to claim 1, wherein: the sealing ring (3) is an asbestos sealing ring.

3. The high-temperature and high-pressure piezometer tube sealing structure for combustion chamber test of a combustion engine according to claim 1, wherein: the number of the pressure measuring pipes (1) is more than three.