阅读说明：本技术 一种应用于燃气轮机的压降调节器 (Pressure drop regulator applied to gas turbine ) 是由 何彬 马正军 张晓云 刘毅腾 屈鑫 于 2020-05-25 设计创作，主要内容包括：一种应用于燃气轮机的压降调节器,它涉及一种压降调节器,具体涉及一种应用于燃气轮机的压降调节器。本发明为了解决燃气轮机轴承腔接触式密封压降无法保证最佳值的问题。本发明包括波纹管组件、阀门组件、壳体组件、调整螺钉、异径接头、第一弹簧和带座螺杆；波纹管组件安装在壳体组件的上端内,带座螺杆的上端穿过壳体组件的底部后插装在波纹管组件内,阀门组件安装在波纹管组件内,异径接头安装在波纹管组件的上端,第一弹簧设置在波纹管组件内的上部,调整螺钉的下单穿过异径接头的上端后与第一弹簧的上端连接。本发明属于燃气轮机领域。(The utility model provides a be applied to gas turbine's pressure drop regulator, it relates to a pressure drop regulator, concretely relates to be applied to gas turbine's pressure drop regulator. The invention aims to solve the problem that the optimal value cannot be ensured by the contact type sealing pressure drop of the bearing cavity of the gas turbine. The invention comprises a corrugated pipe component, a valve component, a shell component, an adjusting screw, a reducing joint, a first spring and a screw rod with a seat; the bellows subassembly is installed in the upper end of casing subassembly, and the cartridge is in the bellows subassembly after the upper end of seated screw rod passes the bottom of casing subassembly, and the valve subassembly is installed in the bellows subassembly, and the reducing connects the upper end of installing at the bellows subassembly, and first spring setting is on the upper portion in the bellows subassembly, and the lower list of adjusting screw is connected with the upper end of first spring after passing the upper end of reducing and connecting. The present invention is in the field of gas turbines.)

1. A pressure drop regulator for use in a gas turbine engine, comprising: the pressure drop regulator applied to the gas turbine comprises a bellows assembly (1), a valve assembly (2), a shell assembly (3), an adjusting screw (10), a reducing joint (12), a first spring (17) and a screw rod (18) with a seat; the corrugated pipe assembly (1) is installed in the upper end of the shell assembly (3), the upper end of the screw rod (18) with the seat penetrates through the bottom of the shell assembly (3) and then is inserted into the corrugated pipe assembly (1), the valve assembly (2) is installed in the corrugated pipe assembly (1), the reducing joint (12) is installed at the upper end of the corrugated pipe assembly (1), the first spring (17) is arranged on the upper portion of the corrugated pipe assembly (1), and the lower end of the adjusting screw (10) penetrates through the upper end of the reducing joint (12) and then is connected with the upper end of the first spring (17).

2. A pressure drop regulator for a gas turbine engine as set forth in claim 1, wherein: the bellows assembly (1) comprises a flange (1A), a ring (1B), a bushing (1C), a tube (1D), a valve disc (1E), a bellows (1F), a ring (1G), a bushing (1H) and a cover (1I); cover (1I) suit is on the outer wall of second bush (1H), second ring (1G) inlays the dress in second bush (1H), the edge cartridge of bellows (1F) upper end is between the inner wall of second ring (1G) and second bush (1H), valve dish (1E) and pipe (1D) set gradually in bellows (1F) from top to bottom, and the lower extreme cartridge of valve dish (1E) is in the upper end of pipe (1D), the lower extreme cartridge of pipe (1D) is in flange (1A), first bush (1C), first ring (1B) suit is on flange (1A) in proper order from outside to inside, the lower extreme edge cartridge of bellows (1F) is between the internal surface of first bush (1C) and the external surface of first ring (1B).

3. A pressure drop regulator for a gas turbine engine as set forth in claim 1, wherein: the valve component (2) comprises a support (2A), a gasket (2B) and a valve (2C); gasket (2B), supreme setting gradually in the recess of supporting (2A) lower surface down on the right side of valve (2C), leave the clearance between gasket (2B) and valve (2C).

4. A pressure drop regulator for a gas turbine engine as set forth in claim 1, wherein: the shell assembly (3) comprises a shell (3A), a support (3B) and a plurality of double-end studs (3C); the support (3B) is embedded in the inner bottom surface of the shell (3A), and a plurality of stud bolts (3C) are inserted on the outer edge of the upper end of the shell (3A).

5. A pressure drop regulator for a gas turbine as claimed in claim 1 or 3, wherein: the screw rod (18) with the seat comprises a screw (18A) and a seat (18B); the screw (18A) is inserted in the support (3B), the seat (18B) is embedded in the upper end of the screw (18A), and the seat (18B) is in contact with the valve (2C).

6. A pressure drop regulator for a gas turbine according to claim 2 or 4, wherein: the pressure drop regulator applied to the gas turbine further comprises a first sealing ring (4), the first sealing ring (4) is sleeved on the outer wall of the lower portion of the cover (1I), and the first sealing ring (4) is located between the outer wall of the cover (1I) and the inner wall of the shell (3A).

7. A pressure drop regulator for a gas turbine engine as set forth in claim 1, wherein: the pressure drop regulator applied to the gas turbine further comprises a cover (9) and a second sealing ring (11), the cover (9) is sleeved on the upper end of the adjusting screw (10), and the second sealing ring (11) is sleeved on the adjusting screw (10).

8. A pressure drop regulator for a gas turbine according to claim 3 or 4, wherein: the pressure drop regulator applied to the gas turbine further comprises a second spring (19) and a third ring (20), the second spring (19) and the third ring (20) are sequentially sleeved on the support (3B) from top to bottom, and the lower surface of the outer edge of the upper end support (2A) of the second spring (19) is in contact with the lower surface of the outer edge of the upper end support (2A).

9. A pressure drop regulator for a gas turbine according to claim 1 or 2, wherein: the pressure drop regulator applied to the gas turbine further comprises a first plug cover (13), a first cone (14) and a first pipe joint (16); the lower end of a first pipe joint (16) is inserted into a through hole in the upper surface of the cover (1I), and a first blocking cover (13) and a first cone (14) are sequentially installed at the upper end of the first pipe joint (16) from top to bottom.

10. A pressure drop regulator for a gas turbine as set forth in claim 1, wherein: the pressure drop regulator applied to the gas turbine also comprises a second pipe joint (24), a second blanking cover (25) and a second cone (26); the second pipe joint (24) is horizontally arranged, the right end of the second pipe joint (24) is inserted into the through hole in the outer wall of the lower part of the shell (3A), and the second plug cover (25) and the second cone (26) are sequentially arranged at the left end of the second pipe joint (24).

Technical Field

The invention relates to a pressure drop regulator, in particular to a pressure drop regulator applied to a gas turbine, and belongs to the field of gas turbines.

Background

The gas turbine lubricating oil system ensures that the bearing parts and the gear meshing parts of the engine are lubricated and cooled under all working conditions of the engine and consists of an oil supply system, an oil return system and a ventilation system. The ventilation system is used for connecting the lubricating oil cavity of the gas turbine to the atmosphere so as to ensure the normal operation of the lubricating oil system and the seal. The lubricating oil for lubricating and cooling the bearings flows into the bearing chambers of the gas turbine, which are sealed off from the flow-through section and the atmosphere. In order to prevent oil from entering the flow-through section from the bearing chamber, the gas seal is provided by means of compressed air drawn from behind the low-pressure compressor, in addition to the mechanical seal.

In order to ensure that the contact type sealing pressure drop of the bearing cavity of the gas turbine is an optimal value, reduce the leakage of lubricating oil of the bearing cavity to a through flow and reduce the consumption of the lubricating oil, the pressure in the bearing cavity is accurately controlled while compressed air is introduced from the back of a low-pressure compressor so as to maintain the contact type sealing pressure drop of the bearing cavity, and in order to meet the requirements, a pressure drop regulator capable of maintaining the constant pressure difference before and after the sealing of the bearing cavity is arranged between an air introducing cavity and the bearing cavity.

Disclosure of Invention

The invention provides a pressure drop regulator applied to a gas turbine, aiming at solving the problem that the contact type sealing pressure drop of a bearing cavity of the gas turbine cannot ensure the optimal value.

The technical scheme adopted by the invention for solving the problems is as follows: the invention comprises a corrugated pipe component, a valve component, a shell component, an adjusting screw, a reducing joint, a first spring and a screw rod with a seat; the bellows subassembly is installed in the upper end of casing subassembly, and the cartridge is in the bellows subassembly after the upper end of seated screw rod passes the bottom of casing subassembly, and the valve subassembly is installed in the bellows subassembly, and the reducing connects the upper end of installing at the bellows subassembly, and first spring setting is on the upper portion in the bellows subassembly, and the lower list of adjusting screw is connected with the upper end of first spring after passing the upper end of reducing and connecting.

Further, the bellows assembly comprises a flange, a ring, a bushing, a tube, a valve disc, a bellows, a ring, a bushing, and a cover; the cover is sleeved on the outer wall of the second bushing, the second ring is embedded in the second bushing, the edge of the upper end of the corrugated pipe is inserted between the second ring and the inner wall of the second bushing, the valve disc and the pipe are sequentially arranged in the corrugated pipe from top to bottom, the lower end of the valve disc is inserted in the upper end of the pipe, the lower end of the pipe is inserted in the flange, the first bushing and the first ring are sequentially sleeved on the flange from outside to inside, and the lower end edge of the corrugated pipe is inserted between the inner surface of the first bushing and the outer surface of the first ring.

Further, the valve assembly comprises a support, a gasket and a valve; the gasket and the valve are sequentially arranged in the groove on the lower surface of the support from the right bottom to the upper part, and a gap is reserved between the gasket and the valve.

Further, the housing assembly includes a housing, a support, and a plurality of studs; the support is embedded in the inner bottom surface of the shell, and a plurality of double-end studs are inserted on the outer edge of the upper end of the shell.

Further, the screw with the seat comprises a screw and a seat; the screw is inserted in the support, the seat is embedded in the upper end of the screw, and the seat is in contact with the valve.

Furthermore, the invention also comprises a first sealing ring which is sleeved on the outer wall of the lower part of the cover, and the first sealing ring is positioned between the outer wall of the cover and the inner wall of the shell.

Furthermore, the invention also comprises a cover and a second sealing ring, wherein the cover is sleeved at the upper end of the adjusting screw, and the second sealing ring is sleeved on the adjusting screw.

Furthermore, the invention also comprises a second spring and a third ring, wherein the second spring and the third ring are sequentially sleeved on the support from top to bottom, and the lower surface of the outer edge of the support at the upper end of the second spring is contacted.

Furthermore, the invention also comprises a first plug cover, a first cone and a first pipe joint; the lower end cartridge of first coupling is covered in the through-hole of upper surface, and first blanking cover, first cone are installed in proper order from top to bottom in the upper end of first coupling.

Furthermore, the invention also comprises a second pipe joint, a second plug cover and a second cone; the second pipe joint is horizontally arranged, the right end of the second pipe joint is inserted into the through hole in the outer wall of the lower portion of the shell, and the second plugging cover and the second cone are sequentially installed at the left end of the second pipe joint.

The invention has the beneficial effects that: the invention ensures that the contact type sealing pressure drop of the bearing cavity of the gas turbine is in a specified range, reduces the consumption of lubricating oil and improves the reliability of the gas turbine; the pressure drop regulator provided by the invention can regulate the contact type sealing pressure drop of the bearing cavity within a certain range, can ensure that oil gas of the bearing cavity does not enter through flow, reduces the consumption of lubricating oil, and improves the economical efficiency and the reliability of the operation of a gas turbine.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a structural illustration of a bellows assembly;

FIG. 3 is a schematic view of the construction of the valve assembly;

FIG. 4 is a schematic view of a screw with a seat;

fig. 5 is a schematic structural view of the housing assembly.

Detailed Description