CN109458230B - Active clearance control valve of high-pressure turbine - Google Patents
Active clearance control valve of high-pressure turbine Download PDFInfo
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- CN109458230B CN109458230B CN201811519458.2A CN201811519458A CN109458230B CN 109458230 B CN109458230 B CN 109458230B CN 201811519458 A CN201811519458 A CN 201811519458A CN 109458230 B CN109458230 B CN 109458230B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/08—Preventing or minimising internal leakage of working-fluid, e.g. between stages for sealing space between rotor blade tips and stator
- F01D11/14—Adjusting or regulating tip-clearance, i.e. distance between rotor-blade tips and stator casing
- F01D11/20—Actively adjusting tip-clearance
- F01D11/24—Actively adjusting tip-clearance by selectively cooling-heating stator or rotor components
Abstract
High-pressure turbine initiative clearance control valve belongs to high-pressure turbine clearance control technical field, and aim at solves the problem that can not effectively adjust the turbine clearance that prior art exists. The invention comprises the following steps: the gas transmission pipeline comprises a gas release port, a five-stage gas inlet and a nine-stage gas inlet; the five-stage valve unit is arranged on the gas transmission pipeline and close to the five-stage gas inlet and controls the opening and closing of the five-stage gas inlet; the nine-stage valve unit is arranged on the gas transmission pipeline and close to the nine-stage gas inlet and controls the opening and closing of the nine-stage gas inlet; and the power control unit is used for respectively controlling the action of the five-stage valve unit and the nine-stage valve unit. The invention controls the on-off of high-temperature gas through fuel oil, thereby effectively reducing the difficulty of the sealing design of the product at high temperature. The hydraulic pressure is converted into mechanical force for driving the movable door to open and close. The structural forms of the inlet channel, the outlet channel and the valve channel not only ensure proper flow, but also can be matched with an engine.
Description
Technical Field
The invention belongs to the technical field of high-pressure turbine clearance control, and particularly relates to a high-pressure turbine active clearance control valve.
Background
The engine turbine clearance refers to the distance between the blade tip of the engine turbine blade and the adjacent outer ring block, and the clearance value between the blade tip and the adjacent outer ring block is changed due to the perennial running of the engine, so that the blade tip clearance is greatly changed under the condition that the engine is rapidly accelerated and decelerated.
The high pressure turbine clearance of current aircraft engines has a significant impact on engine efficiency, i.e., economy and reliability. The clearance of the high-pressure turbine is too large, the air leakage loss is increased, the efficiency of the engine is reduced, the oil supply amount is increased, the high temperature of the engine is caused, and the service life of the engine is adversely affected; the clearance of the high-pressure turbine is too small, and the blades can be broken off at a high rotating speed, so that the engine fails. Therefore, the size of the clearance of the high pressure turbine is critical to efficient, safe and reliable operation of the engine.
In the prior art, methods for correcting the turbine clearance exist, and the rotor and the stator diameter are analyzed in a correlation mode according to a relative position vector of the center of a high-pressure turbine rotor in space at a proportional position between high-pressure rotor supporting points and the center of a high-pressure turbine outer ring. The calculation result is more accurate and can intuitively show the circumferential distribution condition of the turbine clearance of the engine. The method aims to improve the precision and accuracy of an actual distribution result of the blade tip clearance of the high-pressure turbine of the aircraft engine, can guide the assembly work of a high-pressure turbine rotor, reasonably controls the blade tip clearance, plays a guiding role, and cannot realize effective regulation of the clearance.
Disclosure of Invention
The invention aims to provide a high-pressure turbine active clearance control valve, which solves the problem that the turbine clearance cannot be effectively adjusted in the prior art.
To achieve the above object, the active clearance control shutter for a high pressure turbine of the present invention comprises:
the gas transmission pipeline comprises a gas release port, a five-stage gas inlet and a nine-stage gas inlet;
the five-stage valve unit is arranged on the gas transmission pipeline and close to the five-stage gas inlet and controls the opening and closing of the five-stage gas inlet;
the nine-stage valve unit is arranged on the gas transmission pipeline and close to the nine-stage gas inlet and controls the opening and closing of the nine-stage gas inlet;
and the power control unit is used for respectively controlling the action of the five-stage valve unit and the nine-stage valve unit.
The five-stage shutter unit includes:
the five-stage valve rod is in rotating fit with the gas transmission pipeline through a five-stage supporting structure, the axis of the five-stage valve rod is perpendicular to the axis of the five-stage gas inlet, and the five-stage valve assembly is driven to rotate through the power control unit;
and the five-stage valve assembly is fixed on the five-stage valve rod through a five-stage cylindrical pin, and the five-stage valve rod rotates to drive the five-stage valve assembly to open or close the five-stage air inlet.
The five-stage supporting structure comprises a five-stage left screw cap, a five-stage spring, a five-stage self-locking nut, a five-stage adjusting gasket, a five-stage bearing sleeve, a five-stage shaft sleeve, a five-stage washer, a five-stage graphite bearing and a five-stage right screw cap;
two ends of the five-stage valve rod are respectively connected with a gas pipeline through a five-stage graphite bearing, a five-stage right nut and a five-stage left nut are respectively arranged at two ends of the five-stage valve rod, and the five-stage right nut and the five-stage left nut are respectively connected with the gas pipeline; one end of the five-stage valve rod penetrates through the five-stage right nut and is connected with the power control unit; a fifth-stage spring and a fifth-stage adjusting gasket are arranged between the fifth-stage left screw cap and the fifth-stage graphite bearing on the left side, and a fifth-stage bearing sleeve, a fifth-stage shaft sleeve and a fifth-stage gasket are sequentially arranged between the fifth-stage graphite bearing on the left side and the fifth-stage valve assembly; the five-stage adjusting gasket, the five-stage bearing sleeve, the five-stage shaft sleeve and the five-stage washer are fixed through the five-stage self-locking nut and are rigidly connected; and adjusting the five-stage valve assembly to be aligned relative to the gas pipeline.
The nine-stage shutter unit includes:
the nine-stage valve rod is in rotating fit with the gas transmission pipeline through a nine-stage supporting structure, the axes of the nine-stage valve rod and the nine-stage gas inlet are vertically arranged, and the nine-stage valve assembly is driven to rotate through the power control unit;
and the nine-stage valve assembly is fixed on the nine-stage valve rod through a nine-stage cylindrical pin, and the nine-stage valve rod rotates to drive the nine-stage valve assembly to open or close the nine-stage air inlet.
The nine-stage supporting structure comprises a nine-stage left screw cap, a nine-stage spring, a nine-stage self-locking nut, a nine-stage adjusting gasket, a nine-stage bearing sleeve, a nine-stage shaft sleeve, a nine-stage graphite bearing and a nine-stage right screw cap;
two ends of the nine-stage valve rod are respectively connected with a gas pipeline through a nine-stage graphite bearing, a nine-stage right nut and a nine-stage left nut are respectively arranged at two ends of the nine-stage valve rod, and the nine-stage right nut and the nine-stage left nut are respectively connected with the gas pipeline; one end of the nine-stage valve rod penetrates through a nine-stage right nut to be connected with the power control unit; a nine-stage spring and a nine-stage adjusting gasket are arranged between the nine-stage left screw cap and the nine-stage graphite bearing on the left side, and a nine-stage bearing sleeve and a nine-stage shaft sleeve are sequentially arranged between the nine-stage graphite bearing on the left side and the nine-stage valve assembly; the nine-stage self-locking nut is used for fixing the nine-stage adjusting gasket, the nine-stage bearing sleeve and the nine-stage shaft sleeve to be rigidly connected; and adjusting the nine-stage valve assembly to be aligned relative to the gas pipeline.
The power control unit is a hydraulic control unit, including:
the oil way shell comprises two piston cavities, a five-stage fuel inlet and a nine-stage fuel inlet which are arranged at the bottom of the oil way shell and communicated with the two piston cavities, and an oil return opening and an oil leakage opening which are arranged at the bottom of the oil way shell;
the cover plate is arranged at the end part of the oil way shell in a sealing way;
the two piston rods are respectively matched with the two piston cavities, one end parts of the piston rods extend out of the cover plate, and the extending end parts of the two piston rods are respectively connected with a five-stage valve rod of the five-stage valve unit and a nine-stage valve rod of the nine-stage valve unit through a group of joint bearings and a fork-shaped support;
two spring seats respectively arranged at the other ends of the two piston rods;
and the two return springs are respectively positioned in the rod cavities of the two piston cavities, the two return springs are respectively sleeved on the two piston rods, and one end of each return spring is in contact with the end face of the spring seat.
The invention has the beneficial effects that: the invention is composed of two parts, one part is a gas path, and the other part is an oil path; the fuel shell is provided with two oil inlets, an oil return port and an oil leakage port, so that fuel pressure acts on the two control piston rods respectively, and the five-stage valve unit and the nine-stage valve unit are independently controlled to be opened and closed. The stroke of the piston rod is controlled to be about 25.4mm, and the rotation angle of the two valves from the fully open state to the fully closed state is 90 degrees. The invention controls the opening and closing of five-stage and nine-stage butterfly valves according to the change of the fuel pressure of the actuating cylinder, so that the cooling gas flowing to the high-pressure turbine casing has three states: only five-stage gas, only nine-stage gas, mixed gas of five-stage gas and nine-stage gas are used, and the working efficiency and reliability of the engine are improved due to the adjustment of the cooling gas on the clearance of the high-pressure turbine.
The invention controls the on-off of the high-temperature gas through the fuel oil, effectively reduces the difficulty of the sealing design of the product at high temperature, and simultaneously stops the influence of the high-temperature gas on the fuel oil part through reasonable structural layout. The hydraulic pressure is converted into mechanical force for driving the movable door to open and close. The fuel pressure acts on the valve through the connecting rod structure, so that the control valve is switched between a full-open position and a full-close position, and the rotation angle is 90 degrees. The structural forms of the inlet channel, the outlet channel and the valve channel not only ensure proper flow, but also can be matched with an engine.
Drawings
FIG. 1 is a schematic view of the overall structure of the active clearance control valve of the high pressure turbine of the present invention;
FIG. 2 is a schematic view of the working principle of the active clearance control valve of the high pressure turbine of the present invention;
FIG. 3 is a schematic structural diagram of a power control unit in the active clearance control valve of the high pressure turbine according to the present invention;
FIG. 4 is a partial cross-sectional view of a five-stage valve unit structure in the high pressure turbine active clearance control valve of the present invention;
FIG. 5 is a partial cross-sectional view of a nine-stage valve unit configuration of the high pressure turbine active clearance control valve of the present invention;
FIG. 6 is a front view of a five-stage valve unit in the active clearance control valve of the high pressure turbine of the present invention;
FIG. 7 is a top view of a five-stage valve unit in the active clearance control valve of a high pressure turbine according to the present invention;
wherein: 1. gas pipeline, 101, relief port, 102, five-stage gas inlet, 103, nine-stage gas inlet, 2, five-stage valve unit, 201, five-stage valve rod, 202, five-stage valve assembly, 203, five-stage cylindrical pin, 204, five-stage left nut, 205, five-stage spring, 206, five-stage self-locking nut, 207, five-stage adjusting gasket, 208, five-stage bearing sleeve, 209, five-stage shaft sleeve, 210, five-stage gasket, 211, five-stage graphite bearing, 212, five-stage right nut, 3, nine-stage valve unit, 301, nine-stage valve rod, 302, nine-stage valve assembly, 303, nine-stage cylindrical pin, 304, nine-stage left nut, 305, nine-stage spring, 306, nine-stage self-locking nut, 307, nine-stage adjusting gasket, 308, nine-stage bearing sleeve, 309, nine-stage shaft sleeve, 310, nine-stage graphite bearing, 311, nine-stage right nut, 4, power control unit, 401, oil circuit shell, 402, piston cavity, 403, The five-stage fuel oil inlet 404, the nine-stage fuel oil inlet 405, the oil return port 406, the oil leakage port 407, the cover plate 408, the piston rod 409, the spring seat 410, the reset spring 5, the knuckle bearing 6 and the fork-shaped support.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
Referring to fig. 1-2, the high pressure turbine active clearance control shutter of the present invention comprises:
the air transmission pipeline 1 comprises an air release port 101, a five-stage air inlet 102 and a nine-stage air inlet 103; the air release port 101, the five-stage air inlet 102 and the nine-stage air inlet 103 meet the requirements of internal structural layout, flow and installation, when the air release port 101 is horizontal, the axis of the five-stage air inlet 102 and the axis of the air release port 101 are on the same plane, the air inlet direction of the five-stage air inlet 102 and the air release direction of the air release port 101 form an angle of 85 degrees, the axis of the nine-stage air inlet 103 and the axis of the air release port 101 are on the same plane, and the air inlet direction of the nine-stage air inlet 103 and the air release direction of the air release port 101 form an angle of 90 degrees; the air release port 101 is communicated with the clearance position of a high-pressure turbine of the engine, the five-stage air inlet 102 is communicated with a five-stage air source, the nine-stage air inlet 103 is communicated with a nine-stage air source, the five-stage air source is used for five-stage air supply of the air compressor, and the nine-stage air source is used for nine-stage air supply of the air compressor;
the five-stage valve unit 2 is arranged on the gas transmission pipeline 1 and close to the five-stage gas inlet 102, and the five-stage valve unit 2 controls the opening and closing of the five-stage gas inlet 102;
the nine-stage valve unit 3 is arranged on the gas transmission pipeline 1 and close to the nine-stage gas inlet 103, and the nine-stage valve unit 3 controls the opening and closing of the nine-stage gas inlet 103;
and a power control unit 4, wherein the power control unit 4 respectively controls the five-stage valve unit 2 and the nine-stage valve unit 3 to act.
Referring to fig. 4, the five-stage shutter unit 2 includes:
the five-stage valve rod 201 is in running fit with the gas transmission pipeline 1 through a five-stage supporting structure, the axis of the five-stage valve rod 201 is perpendicular to the axis of the five-stage gas inlet 102, and the five-stage valve assembly 202 is driven to rotate through the power control unit 4;
and a five-stage valve assembly 202 fixed on the five-stage valve rod 201 through a five-stage cylindrical pin 203, wherein the five-stage valve rod 201 rotates to drive the five-stage valve assembly 202 to open or close the five-stage air inlet 102.
The five-stage supporting structure comprises a five-stage left nut 204, a five-stage spring 205, a five-stage self-locking nut 206, a five-stage adjusting gasket 207, a five-stage bearing sleeve 208, a five-stage shaft sleeve 209, a five-stage washer 210, a five-stage graphite bearing 211 and a five-stage right nut 212;
two ends of the five-stage valve rod 201 are respectively connected with the gas pipeline 1 through a five-stage graphite bearing 211, two ends of the five-stage valve rod are respectively provided with a five-stage right nut 212 and a five-stage left nut 204, and the five-stage right nut 212 and the five-stage left nut 204 are respectively connected with the gas pipeline 1; one end of the five-stage valve rod 201 penetrates through a five-stage right nut 212 to be connected with the power control unit 4; a fifth-stage spring 205 and a fifth-stage adjusting gasket 207 are arranged between the fifth-stage left nut 204 and the fifth-stage graphite bearing 211 on the left side, and a fifth-stage bearing sleeve 208, a fifth-stage shaft sleeve 209 and a fifth-stage gasket 210 are sequentially arranged between the fifth-stage graphite bearing 211 on the left side and the fifth-stage valve assembly 202; a five-stage adjusting gasket 207, a five-stage bearing sleeve 208, a five-stage shaft sleeve 209 and a five-stage washer 210 are fixed by the five-stage self-locking nut 206 and are rigidly connected; the five-stage shutter assembly 202 is adjusted to be centered with respect to the gas pipeline 1.
One of the five-stage graphite bearings 211 is arranged on the left and the right, and plays a role in sealing and supporting, and the five-stage adjusting gasket 207 enables the center line of the five-stage valve assembly 202 to be aligned with the center line of the gas pipeline 1. One end of the fifth-stage spring 205 is in contact with the fifth-stage left nut 204 to perform the centering adjustment.
The matching part of the gas pipeline 1 and the five-stage valve assembly 202 is a structure which contracts first and then expands, so that the acceleration of the gas flow is realized, and the gas supply with the pressure ratio of 1.8 to 3.0 is provided.
Referring to fig. 5, the nine-stage shutter unit 3 includes:
the nine-stage valve rod 301 is in running fit with the gas transmission pipeline 1 through a nine-stage supporting structure, the axes of the nine-stage valve rod 301 and the nine-stage gas inlet 103 are vertically arranged, and the nine-stage valve assembly 302 is driven to rotate through the power control unit 4;
and a nine-stage shutter assembly 302 fixed on the nine-stage shutter rod 301 through a nine-stage cylindrical pin 303, wherein the nine-stage shutter rod 301 rotates to drive the nine-stage shutter assembly 302 to open or close the nine-stage air inlet 103.
The nine-stage supporting structure comprises a nine-stage left nut 304, a nine-stage spring 305, a nine-stage self-locking nut 306, a nine-stage adjusting gasket 307, a nine-stage bearing sleeve 308, a nine-stage shaft sleeve 309, a nine-stage graphite bearing 310 and a nine-stage right nut 311;
two ends of the nine-stage valve rod 301 are respectively connected with the gas pipeline 1 through a nine-stage graphite bearing 310, two ends of the nine-stage valve rod are respectively provided with a nine-stage right nut 311 and a nine-stage left nut 304, and the nine-stage right nut 311 and the nine-stage left nut 304 are respectively connected with the gas pipeline 1; one end of the nine-stage valve rod 301 penetrates through a nine-stage right nut 311 to be connected with the power control unit 4; a nine-stage spring 305 and a nine-stage adjusting gasket 307 are arranged between the nine-stage left nut 304 and the nine-stage graphite bearing 310 on the left side, and a nine-stage bearing sleeve 308 and a nine-stage shaft sleeve 309 are sequentially arranged between the nine-stage graphite bearing 310 on the left side and the nine-stage valve assembly 302; a nine-stage adjusting gasket 307, a nine-stage bearing sleeve 308 and a nine-stage shaft sleeve 309 are fixed through the nine-stage self-locking nut 307 and are rigidly connected; the nine-stage shutter assembly 302 is adjusted to be centered with respect to the air pipeline 1.
The nine-stage graphite bearings 310 are arranged on the left and the right respectively and play a role in sealing and supporting, and the nine-stage adjusting gasket 307 enables the center line of the nine-stage valve assembly 302 to be aligned with the center line of the gas transmission pipeline 1. One end of the nine-stage spring 305 is in contact with the nine-stage left nut 304 to perform the centering adjustment.
The matching part of the gas pipeline 1 and the nine-stage valve assembly 302 is a structure which contracts first and then expands, so that the acceleration of the gas flow is realized, and the gas supply with the pressure ratio of 1.8 to 3.0 is provided.
Referring to fig. 3, the power control unit 4 is a hydraulic control unit including:
the fuel injection device comprises a fuel passage shell 401, wherein the fuel passage shell 401 comprises two piston cavities 402, a five-stage fuel inlet 403 and a nine-stage fuel inlet 404 which are arranged at the bottom of the fuel passage shell 401 and communicated with the two piston cavities 402, and an oil return port 405 and an oil leakage port 406 which are arranged at the bottom of the fuel passage shell 401;
a cover plate 407 sealingly provided at an end of the oil passage case 401;
two piston rods 408 respectively matched with the two piston cavities 402, wherein one end parts of the piston rods 408 extend out from the cover plate 407, and the extending end parts of the two piston rods 408 are respectively connected with the five-stage valve rod 201 of the five-stage valve unit 2 and the nine-stage valve rod 301 of the nine-stage valve unit 3 through a group of knuckle bearings 5 and a fork support 6;
two spring seats 409 respectively arranged at the other ends of the two piston rods 408;
and two return springs 410 respectively positioned in the rod cavities of the two piston cavities 402, wherein the two return springs 410 are respectively sleeved on the two piston rods 408, and one end of each return spring is in end surface contact with the spring seat 409.
The contact matching surface of the piston rod 408 and the cover plate 407 is provided with a sealing ring and a sealing ring to realize sealing, the joint matching position of the cover plate 407 and the oil circuit shell 401 is provided with a sealing ring, and the contact matching position of the piston on the piston rod 408 and the piston cavity 402 is provided with a sealing ring and a sealing ring.
Referring to fig. 6-7, the gas pipeline 1 and the oil circuit shell 401 are fixedly connected through a dodecagonal head bolt, so that the structural integration of the gas pipeline and the oil circuit is realized; the piston rod 408 is rigidly connected with the rod end joint bearing 5, the fork-shaped bracket 6 and the five-stage valve rod 201; the five-stage valve assembly 202 is assembled on the five-stage valve rod 201 inside the shell, and is fixed with the five-stage valve rod 201 through a cylindrical pin, so that the follow-up of the five-stage valve assembly 202 and the valve rod is realized. When high-pressure oil is arranged on the right side of the piston rod 408 and low-pressure oil is arranged on the left side of the piston rod 408, the piston rod 408 linearly moves leftwards under the action of fuel oil pressure difference and overcomes the force of the return spring 410, the direction change and the force transmission are realized through the rod end knuckle bearing 5, the change is converted into the clockwise circumferential operation of the fork-shaped support 6 along the five-stage valve rod 201, and therefore the opening of the five-stage valve assembly 202 is realized; when the right side of the piston rod 408 is low pressure oil and the left side is high pressure oil, the piston rod 408 moves linearly to the right under the combined action of the fuel pressure difference and the spring force, the rod end knuckle bearing 5 moves to the right, and the fork-shaped support 6 is driven to complete the anticlockwise circular motion along the five-stage valve rod 201, so that the five-stage valve assembly 202 is closed, and the process realizes that the fuel pressure of a product is converted into mechanical force for driving the valve to open and close.
The control state of each valve of the product is divided into a fully-opened state and a fully-closed state, and the five-stage valve assembly 202 is opened when the piston rod 408 assembly corresponding to the five-stage valve extends out; the nine-stage shutter assembly 302 is closed when the piston rod 408 corresponding to the nine-stage shutter is extended.
Claims (4)
1. High pressure turbine initiative clearance control valve, its characterized in that includes:
the air transmission pipeline (1), the air transmission pipeline (1) comprises an air release opening (101), a five-stage air inlet (102) and a nine-stage air inlet (103);
the five-stage valve unit (2) is arranged on the gas transmission pipeline (1) and close to the five-stage gas inlet (102), and the five-stage valve unit (2) controls the opening and closing of the five-stage gas inlet (102);
the nine-stage valve unit (3) is arranged on the gas transmission pipeline (1) and close to the nine-stage gas port (103), and the nine-stage valve unit (3) controls the nine-stage gas port (103) to be opened and closed;
the power control unit (4) is used for respectively controlling the five-stage valve unit (2) and the nine-stage valve unit (3) to act through the power control unit (4);
the five-stage shutter unit (2) includes:
the five-stage valve rod (201) is in running fit with the gas transmission pipeline (1) through a five-stage supporting structure, the axis of the five-stage valve rod (201) is perpendicular to the axis of the five-stage gas inlet (102), and the five-stage valve assembly (202) is driven to rotate through the power control unit (4);
the five-stage valve assembly (202) is fixed on the five-stage valve rod (201) through a five-stage cylindrical pin (203), and the five-stage valve rod (201) rotates to drive the five-stage valve assembly (202) to open or close the five-stage air inlet (102);
the five-stage supporting structure comprises a five-stage left nut (204), a five-stage spring (205), a five-stage self-locking nut (206), a five-stage adjusting gasket (207), a five-stage bearing sleeve (208), a five-stage shaft sleeve (209), a five-stage washer (210), a five-stage graphite bearing (211) and a five-stage right nut (212);
two ends of a five-stage valve rod (201) are respectively connected with the gas transmission pipeline (1) through a five-stage graphite bearing (211), two ends of the five-stage valve rod are respectively provided with a five-stage right nut (212) and a five-stage left nut (204), and the five-stage right nut (212) and the five-stage left nut (204) are respectively connected with the gas transmission pipeline (1); one end of the five-stage valve rod (201) penetrates through a five-stage right nut (212) to be connected with the power control unit (4); a five-stage spring (205) and a five-stage adjusting gasket (207) are arranged between the five-stage left screw cap (204) and the five-stage graphite bearing (211) on the left side, and a five-stage bearing sleeve (208), a five-stage shaft sleeve (209) and a five-stage gasket (210) are sequentially arranged between the five-stage graphite bearing (211) on the left side and the five-stage valve assembly (202); a five-stage adjusting gasket (207), a five-stage bearing sleeve (208), a five-stage shaft sleeve (209) and a five-stage washer (210) are fixed through the five-stage self-locking nut (206) and are rigidly connected; and adjusting the alignment of the five-stage valve assembly (202) relative to the gas transmission pipeline (1).
2. High pressure turbine active clearance control shutter according to claim 1, characterized in that the nine-stage shutter unit (3) comprises:
the nine-stage valve rod (301) is in running fit with the gas transmission pipeline (1) through a nine-stage supporting structure, the axes of the nine-stage valve rod (301) and the nine-stage gas inlet (103) are vertically arranged, and the nine-stage valve assembly (302) is driven to rotate through the power control unit (4);
and a nine-stage valve assembly (302) fixed on the nine-stage valve rod (301) through a nine-stage cylindrical pin (303), wherein the nine-stage valve rod (301) rotates to drive the nine-stage valve assembly (302) to open or close the nine-stage air inlet (103).
3. The high pressure turbine active clearance control shutter as claimed in claim 2, wherein the nine-stage support structure comprises a nine-stage left nut (304), a nine-stage spring (305), a nine-stage self-locking nut (306), a nine-stage adjusting shim (307), a nine-stage bearing housing (308), a nine-stage bushing (309), a nine-stage graphite bearing (310), and a nine-stage right nut (311);
two ends of the nine-stage valve rod (301) are respectively connected with the gas transmission pipeline (1) through nine-stage graphite bearings (310), two ends of the nine-stage valve rod are respectively provided with a nine-stage right nut (311) and a nine-stage left nut (304), and the nine-stage right nut (311) and the nine-stage left nut (304) are respectively connected with the gas transmission pipeline (1); one end of the nine-stage valve rod (301) penetrates through a nine-stage right nut (311) to be connected with the power control unit (4); a nine-stage spring (305) and a nine-stage adjusting gasket (307) are arranged between the nine-stage left screw cap (304) and the nine-stage graphite bearing (310) on the left side, and a nine-stage bearing sleeve (308) and a nine-stage shaft sleeve (309) are sequentially arranged between the nine-stage graphite bearing (310) on the left side and the nine-stage valve assembly (302); a nine-stage adjusting gasket (307), a nine-stage bearing sleeve (308) and a nine-stage shaft sleeve (309) are fixed through the nine-stage self-locking nut (306) and are rigidly connected; and adjusting the nine-stage valve assembly (302) to be centered relative to the gas transmission pipeline (1).
4. High pressure turbine active clearance control shutter according to any of claims 1 to 3, characterized in that the power control unit (4) is a hydraulic control unit comprising:
the oil way comprises an oil way shell (401), wherein the oil way shell (401) comprises two piston cavities (402), a five-stage fuel inlet (403) and a nine-stage fuel inlet (404) which are arranged at the bottom of the oil way shell (401) and communicated with the two piston cavities (402), and an oil return opening (405) and an oil leakage opening (406) which are arranged at the bottom of the oil way shell (401);
a cover plate (407) hermetically provided at an end of the oil passage housing (401);
the two piston rods (408) are respectively matched with the two piston cavities (402), one end parts of the piston rods (408) extend out of the cover plate (407), and the extending end parts of the two piston rods (408) are respectively connected with a five-stage valve rod (201) of the five-stage valve unit (2) and a nine-stage valve rod (301) of the nine-stage valve unit (3) through a group of joint bearings (5) and a fork support (6);
two spring seats (409) respectively arranged at the other ends of the two piston rods (408);
and the two return springs (410) are respectively positioned in the rod cavities of the two piston cavities (402), the two return springs (410) are respectively sleeved on the two piston rods (408), and one end of each return spring is in end surface contact with the spring seat (409).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811519458.2A CN109458230B (en) | 2018-12-12 | 2018-12-12 | Active clearance control valve of high-pressure turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811519458.2A CN109458230B (en) | 2018-12-12 | 2018-12-12 | Active clearance control valve of high-pressure turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109458230A CN109458230A (en) | 2019-03-12 |
| CN109458230B true CN109458230B (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811519458.2A Active CN109458230B (en) | 2018-12-12 | 2018-12-12 | Active clearance control valve of high-pressure turbine |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7708518B2 (en) * | 2005-06-23 | 2010-05-04 | Siemens Energy, Inc. | Turbine blade tip clearance control |
| CN201502431U (en) * | 2009-09-28 | 2010-06-09 | 刘春潮 | Air intercooler of diesel engine for automobile |
| US8973373B2 (en) * | 2011-10-31 | 2015-03-10 | General Electric Company | Active clearance control system and method for gas turbine |
| CN103195974B (en) * | 2013-04-08 | 2014-09-17 | 张家港沙洲船用阀门制造有限公司 | Locking device for pneumatic valve |
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2018
- 2018-12-12 CN CN201811519458.2A patent/CN109458230B/en active Active
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