CN112361061A - Be applied to gas turbine's bleed valve of taking position feedback - Google Patents
Be applied to gas turbine's bleed valve of taking position feedback Download PDFInfo
- Publication number
- CN112361061A CN112361061A CN202011366734.3A CN202011366734A CN112361061A CN 112361061 A CN112361061 A CN 112361061A CN 202011366734 A CN202011366734 A CN 202011366734A CN 112361061 A CN112361061 A CN 112361061A
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- Prior art keywords
- rod
- annunciator
- piston
- shell
- spring
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- 238000007789 sealing Methods 0.000 claims description 34
- 239000004519 grease Substances 0.000 claims description 14
- 230000001050 lubricating effect Effects 0.000 claims description 12
- 229910000906 Bronze Inorganic materials 0.000 claims description 8
- 239000010974 bronze Substances 0.000 claims description 8
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 7
- 238000007747 plating Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 238000003745 diagnosis Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
- F02C9/16—Control of working fluid flow
- F02C9/18—Control of working fluid flow by bleeding, bypassing or acting on variable working fluid interconnections between turbines or compressors or their stages
Abstract
A gas release valve with position feedback applied to a gas turbine relates to the field of energy and power industry. The invention aims to solve the problem that the conventional device for opening the air release valve is not opened timely due to clamping stagnation failure. The air release valve is opened by supplying air to the air release valve (between the outer wall of the barrel-shaped piston part of the control cavity and the shell), and an opening signal can be fed back to a control system of the gas turbine after the air release valve is completely opened, so that a part of compressed air between compressor stages is released by the gas turbine in a working condition interval with smaller surge margin, and the surge margin and the safety of the gas turbine are improved. It is used for feeding back the turn-on signal.
Description
Technical Field
The invention relates to a pneumatic control system accessory of a gas turbine used in the ship industry, belongs to the energy power industry, and particularly relates to a vent valve with position feedback.
Background
The gas turbine pneumatic control system is used for gas turbine starting deflation, low working condition deflation, load shedding deflation, fuel oil atomization during gas turbine ignition and fuel oil purging during gas turbine shutdown, ensures that the gas turbine is started smoothly, has higher surge margin under low working conditions, is not overspeed when the load is suddenly unloaded, and is of great importance to the gas turbine in reliable operation of the pneumatic control system and accessories thereof. In order to prevent the surge of the gas turbine, a part of compressed air is discharged in a working condition interval with smaller surge margin of the gas turbine, therefore, a vent valve which can be quickly opened is arranged between compressor stages, the vent valve can be blocked and fails to be opened, at the moment, the working condition of the gas turbine is forbidden to be lifted, and an opening signal can be fed back to a gas turbine control system when the vent valve is required to be completely opened, so that the operation safety of the gas turbine is improved.
Disclosure of Invention
The invention aims to solve the problem that the conventional device for opening the air release valve is not opened timely due to clamping stagnation failure. A bleed valve with position feedback for use in a gas turbine engine is now provided.
A deflation valve with position feedback for a gas turbine comprises a annunciator component 1, a piston component 2, a pipe joint 3, a shell 14, a first sliding sealing mechanism, a second sliding sealing mechanism and a first spring 4,
the annunciator component 1 comprises an annunciator 1-1, a rod 1-2, a cover 1-3 and an annunciator bracket 1-4,
the piston assembly 2 includes a piston 2-1 and a knock pin 2-2,
the cover 1-3 is covered on the opening of the shell 14, the cover 1-3 is fixedly connected with the shell 14,
the annunciator support 1-4 is fixed on the outer side wall of the cover 1-3, the annunciator 1-1 is fixed on the annunciator support 1-4, the rod 1-2 is embedded on the outer wall of the cover 1-3 and the annunciator support 1-4, one end of the rod 1-2 is exposed out of the shell 14 and faces to the open end of the air release valve of the annunciator 1-1, and the other end of the rod 1-2 is in the shell 14;
the piston 2-1 comprises a piston head 2-11 and a piston rod 2-12, the piston head 2-11 and the piston rod 2-12 are coaxially connected into an integrated structure, the piston head 2-11 is arranged in a shell 14, a first sliding sealing mechanism is arranged at the joint of the outer side wall of the piston head 2-11 and the shell 14, the piston rod 2-12 extends out of the shell 14, a second sliding sealing mechanism is arranged at the joint of the outer wall of the piston rod 2-12 and the shell 14,
the knock pin 2-2 is provided inside the joint of the piston head 2-11 and the piston rod 2-12, and the knock pin 2-2 is aligned with the rod 1-2,
the two ends of the first spring 4 are respectively connected on the inner walls of the covers 1-3 and the piston heads 2-11, and the first spring 4 is coaxial with the piston assembly 2,
the shell 14 is provided with the pipe joint 3, the vent hole of the pipe joint 3 is communicated with the interior of the shell 14, the pipe joint 3 is used for introducing compressed air between the outer wall of the piston head 2-11 and the shell 14, the compressed air pushes the piston assembly 2 to move towards the rod 1-2, the ejector pin 2-2 is in contact with the rod 1-2 and pushes the rod 1-2 to move towards the annunciator 1-1 until the rod 1-2 is in contact with the annunciator 1-1, the annunciator 1-1 sends a release valve opening signal with position feedback, the pipe joint 3 is also used for discharging the compressed air between the outer wall of the piston head 2-11 and the shell 14, so that the piston assembly 2 returns to the original position under the elastic force of the first spring 4, further, the rod 1-2 is separated from the annunciator 1-1, and the air release valve opening signal with position feedback of the annunciator 1-1 is closed.
Preferably, the air release valve further comprises a second spring 5, the second spring 5 is arranged at the end part of the rod 1-2, the second spring 5 faces the ejector pin 2-2, and the second spring 5 stretches and retracts along the axial direction.
Preferably, the first sliding sealing mechanism comprises a first sealing ring 7 and a first lubricating grease 8,
the second sliding sealing mechanism comprises a second sealing ring 9 and second lubricating grease 10,
a first sealing ring 7 and a first lubricating grease 8 are arranged at the joint of the outer side wall of the piston head 2-11 and the shell 14,
and a second sealing ring 9 and second lubricating grease 10 are arranged at the joint of the outer wall of the piston rod 2-12 and the shell 14.
Preferably, the piston assembly 2 further comprises a first sleeve 2-3, the first sleeve 2-3 is fixedly arranged inside the joint of the piston head 2-11 and the piston rod 2-12, the first sleeve 2-3 is coaxial with the piston 2-1, the ejector pin 2-2 is arranged inside the first sleeve 2-3, and the ejector pin 2-2 is aligned with the rod.
Preferably, the air release valve further comprises a third spring 11,
the third spring 11 is arranged at the tail end of the ejector pin 2-2, the third spring 11 is used for fixing the ejector pin 2-2 in the piston rod 2-12 to prevent the ejector pin 2-2 from shaking in the first sleeve 2-3, and the tail end of the ejector pin 2-2 faces the tail end of the piston rod 2-12.
Preferably, the purge valve further comprises bronze 6,
the outer side wall of the piston head 2-11 is provided with bronze 6.
Preferably, the air release valve also comprises a hard Cr60 plating layer,
the outer wall of the piston rod 2-12 is provided with a hard Cr60 plating layer.
Preferably, the annunciator assembly 1 further includes pins 1-5, locking tabs 1-6, washers 1-8, bolts 1-7 and wires 1-9,
the annunciator 1-1 is fixed on the annunciator bracket 1-4 through a pin 1-5 and a locking plate 1-6,
the annunciator bracket 1-4 and the cover 1-3 are fixed by bolts 1-7,
one end of the rod 1-2 penetrates through the cover 1-3 and the annunciator support 1-4 to extend into the annunciator support 1-4, the second gasket 1-8 and the metal wire 1-9 are sleeved at one end of the rod 1-2, and the second gasket 1-8 and the metal wire 1-9 are used for limiting the axial position of the rod 1-2.
The invention has the beneficial effects that:
the air release valve is opened by supplying air to the air release valve control cavity (between the outer wall of the barrel-shaped piston part and the shell), and after the air release valve is completely opened, an opening signal can be fed back to a gas turbine control system, so that a part of compressed air between compressor stages is released by the gas turbine in a working condition interval with smaller surge margin, and the surge margin and the safety of the gas turbine are improved.
Filling MoS between piston assembly and shell2The grease reduces the coefficient of friction of the kinematic pair.
And the annunciator component is adopted to monitor the opening position of the air release valve, so that fault diagnosis can be performed on the air release valve, and the operation safety of the gas turbine is improved.
The mode of overlaying bronze on the piston is adopted to reduce the risk of contact jamming of the friction surface of the piston assembly and the shell.
The hard Cr60 plated on the piston is adopted to improve the wear resistance and heat resistance of the piston assembly and reduce the friction coefficient of a kinematic pair.
The signal device is adopted to monitor the opening position of the deflation valve with position feedback, so that the failure diagnosis can be carried out on the deflation valve with position feedback, and the operation safety of the gas turbine is improved.
The high-temperature-resistant air release valve is high in temperature resistance, quick in air release valve opening, capable of feeding back an opening signal and high in reliability.
Drawings
FIG. 1 is an overall block diagram of a bleed valve with position feedback for use in a gas turbine engine;
FIG. 2 is a schematic diagram of a construction of an annunciator assembly;
FIG. 3 is a cross-sectional view taken along line Q-Q of FIG. 2;
fig. 4 is a schematic structural view of the piston assembly.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1, the bleed valve with position feedback applied to the gas turbine comprises an annunciator assembly 1, a piston assembly 2, a pipe joint 3, a shell 14, a first sliding sealing mechanism, a second sliding sealing mechanism and a first spring 4,
the annunciator component 1 comprises an annunciator 1-1, a rod 1-2, a cover 1-3 and an annunciator bracket 1-4,
the piston assembly 2 includes a piston 2-1 and a knock pin 2-2,
the cover 1-3 is covered on the opening of the shell 14, the cover 1-3 is fixedly connected with the shell 14,
the annunciator support 1-4 is fixed on the outer side wall of the cover 1-3, the annunciator 1-1 is fixed on the annunciator support 1-4, the rod 1-2 is embedded on the outer wall of the cover 1-3 and the annunciator support 1-4, one end of the rod 1-2 is exposed out of the shell 14 and faces to the open end of the air release valve of the annunciator 1-1, and the other end of the rod 1-2 is in the shell 14;
the piston 2-1 comprises a piston head 2-11 and a piston rod 2-12, the piston head 2-11 and the piston rod 2-12 are coaxially connected into an integrated structure, the piston head 2-11 is arranged in a shell 14, a first sliding sealing mechanism is arranged at the joint of the outer side wall of the piston head 2-11 and the shell 14, the piston rod 2-12 extends out of the shell 14, a second sliding sealing mechanism is arranged at the joint of the outer wall of the piston rod 2-12 and the shell 14,
the knock pin 2-2 is provided inside the joint of the piston head 2-11 and the piston rod 2-12, and the knock pin 2-2 is aligned with the rod 1-2,
the two ends of the first spring 4 are respectively connected on the inner walls of the covers 1-3 and the piston heads 2-11, and the first spring 4 is coaxial with the piston assembly 2,
the shell 14 is provided with the pipe joint 3, the vent hole of the pipe joint 3 is communicated with the interior of the shell 14, the pipe joint 3 is used for introducing compressed air between the outer wall of the piston head 2-11 and the shell 14, the compressed air pushes the piston assembly 2 to move towards the rod 1-2, the ejector pin 2-2 is in contact with the rod 1-2 and pushes the rod 1-2 to move towards the annunciator 1-1 until the rod 1-2 is in contact with the annunciator 1-1, the annunciator 1-1 sends a release valve opening signal with position feedback, the pipe joint 3 is also used for discharging the compressed air between the outer wall of the piston head 2-11 and the shell 14, so that the piston assembly 2 returns to the original position under the elastic force of the first spring 4, further, the rod 1-2 is separated from the annunciator 1-1, and the air release valve opening signal with position feedback of the annunciator 1-1 is closed.
In the embodiment, the gas turbine supplies compressed air to the deflation valve control cavity with position feedback through the pipe joint in the working condition interval with smaller surge margin, the compressed air pushes the piston assembly to move along the inner wall of the shell, the ejector pin is in contact with the rod of the annunciator assembly and pushes the rod to move until the rod is in contact with the annunciator, and the annunciator sends a deflation valve opening signal with position feedback. When the air release is not needed, the compressed air of the air release valve control chamber with position feedback is exhausted through the pipe joint, and the piston assembly returns to the air release valve closing position under the action of the spring.
In fig. 1, reference numeral 11 is a spring No. three, reference numeral 12 is a washer No. three, reference numeral 13 is a screw, the washer No. three 12 is disposed between the housing and the pipe joint, and the covers 1-3 and the housing 14 are fixedly connected by the screw 13.
In the embodiment, when the air release is not needed, compressed air of the air release valve control cavity with position feedback is exhausted through the pipe joint, and the piston assembly returns to the air release valve closing position under the action of the first spring.
The second embodiment is as follows: the present embodiment is a bleed valve with position feedback for a gas turbine, which is described in the first embodiment, and further includes a second spring 5, where the second spring 5 is disposed at an end of the rod 1-2, the second spring 5 faces the knock pin 2-2, and the second spring 5 extends and contracts along the axial direction.
In the embodiment, the second spring 5 is arranged to buffer the contact between the rod 1-2 and the ejector pin 2-2, so that the rod 1-2 is prevented from being damaged.
The third concrete implementation mode: in the embodiment, the first sliding sealing mechanism comprises a first sealing ring 7 and a first lubricating grease 8,
the second sliding sealing mechanism comprises a second sealing ring 9 and second lubricating grease 10,
a first sealing ring 7 and a first lubricating grease 8 are arranged at the joint of the outer side wall of the piston head 2-11 and the shell 14,
and a second sealing ring 9 and second lubricating grease 10 are arranged at the joint of the outer wall of the piston rod 2-12 and the shell 14.
In the embodiment, the sealing is realized by adopting the action of the sealing ring, the compressed gas does not run out, and MoS is adopted2The grease reduces the coefficient of friction of the kinematic pair.
The fourth concrete implementation mode: the piston assembly 2 further comprises a first sleeve 2-3, the first sleeve 2-3 is fixedly arranged inside the joint of the piston head 2-11 and the piston rod 2-12, the first sleeve 2-3 is coaxial with the piston 2-1, the ejector pin 2-2 is arranged inside the first sleeve 2-3, and the ejector pin 2-2 is aligned with the rod.
The fifth concrete implementation mode: the embodiment is a bleed valve with position feedback applied to the gas turbine, which is described in the fourth embodiment, and further comprises a third spring 11,
the third spring 11 is arranged at the tail end of the ejector pin 2-2, the third spring 11 is used for fixing the ejector pin 2-2 in the piston rod 2-12 to prevent the ejector pin 2-2 from shaking in the first sleeve 2-3, and the tail end of the ejector pin 2-2 faces the tail end of the piston rod 2-12.
In the embodiment, the ejector pin 2-2 can shake in the first sleeve 2-3, so that the shaking is avoided, and the ejector pin 2-2 is fixed on the piston rod 2-12 by the third spring 11.
The sixth specific implementation mode: the embodiment is a bleed valve with position feedback applied to a gas turbine, which is described in the first embodiment, and further comprises bronze 6,
the outer side wall of the piston head 2-11 is provided with bronze 6.
In this embodiment, the mode of overlaying bronze on the piston is adopted to reduce the risk of contact jamming of the friction surface of the piston assembly and the shell.
The seventh embodiment: the embodiment is a bleed valve with position feedback applied to a gas turbine, which is described in the first embodiment, and further comprises a hard Cr60 plating layer,
the outer wall of the piston rod 2-12 is provided with a hard Cr60 plating layer.
In the present embodiment, the hard Cr60 plating on the piston improves the wear resistance and heat resistance of the piston assembly, and reduces the friction coefficient of the kinematic pair.
The specific implementation mode is eight: the embodiment is a bleed valve with position feedback applied to a gas turbine, which is described in the first embodiment, the annunciator component 1 further comprises pins 1-5, locking plates 1-6, second washers 1-8, bolts 1-7 and metal wires 1-9,
the annunciator 1-1 is fixed on the annunciator bracket 1-4 through a pin 1-5 and a locking plate 1-6,
the annunciator bracket 1-4 and the cover 1-3 are fixed by bolts 1-7,
one end of the rod 1-2 penetrates through the cover 1-3 and the annunciator support 1-4 to extend into the annunciator support 1-4, the second gasket 1-8 and the metal wire 1-9 are sleeved at one end of the rod 1-2, and the second gasket 1-8 and the metal wire 1-9 are used for limiting the axial position of the rod 1-2.
In this embodiment, when the rod 1-2 is disengaged from the annunciator, the rod is moved to the right by the force of the second spring, and at this time, if the wires 1-9 and the second washers 1-8 are not provided, the rod is likely to enter the housing, so that the wires 1-9 and the second washers 1-8 are used to restrain the rod to the cover and the bracket.
As shown in fig. 1, the present application further includes a butterfly valve 15-1, a washer 15-2, a nut 15-3, a sleeve 15-4 and a seal ring 15-5,
the tail of the piston rod 2-12 is sleeved with a second sleeve 15-4, a third sealing ring 15-5 is sleeved on the second sleeve 15-4, a butterfly valve 15-1 is sleeved on the second sleeve 15-4, a first washer 15-2 and a nut 15-3 are sleeved on the piston rod 2-12, the first washer 15-2 and the nut 15-3 are used for blocking the second sleeve 15-4, the third sealing ring 15-5 and the butterfly valve 15-1 on the piston rod 2-12,
the butterfly valve 6-1 is connected with a ring cavity on the gas turbine and is used for controlling the discharge of the gas turbine through-flow gas in the ring cavity.
In the present embodiment, sleeve number one 2-3 is fixed to the inner wall of the piston by screws 16, as shown in fig. 1.
Claims (8)
1. A deflation valve with position feedback applied to a gas turbine is characterized by comprising a annunciator component (1), a piston component (2), a pipe joint (3), a shell (14), a first sliding sealing mechanism, a second sliding sealing mechanism and a first spring (4),
the annunciator component (1) comprises an annunciator (1-1), a rod (1-2), a cover (1-3) and an annunciator bracket (1-4),
the piston assembly (2) comprises a piston (2-1) and a top pin (2-2),
the cover (1-3) is covered at the opening of the shell (14), the cover (1-3) is fixedly connected with the shell (14),
the annunciator support (1-4) is fixed on the outer side wall of the cover (1-3), the annunciator (1-1) is fixed on the annunciator support (1-4), the rod (1-2) is embedded on the outer wall of the cover (1-3) and the annunciator support (1-4), one end of the rod (1-2) is exposed out of the shell (14) and faces to the opening end of the air release valve of the annunciator (1-1), and the other end of the rod (1-2) is arranged in the shell (14);
the piston (2-1) comprises a piston head (2-11) and a piston rod (2-12), the piston head (2-11) and the piston rod (2-12) are coaxially connected into an integrated structure, the piston head (2-11) is arranged in the shell (14), a first sliding sealing mechanism is arranged at the joint of the outer side wall of the piston head (2-11) and the shell (14), the piston rod (2-12) extends out of the shell (14), a second sliding sealing mechanism is arranged at the joint of the outer wall of the piston rod (2-12) and the shell (14),
the knock pin (2-2) is arranged inside the joint of the piston head (2-11) and the piston rod (2-12), and the knock pin (2-2) is aligned with the rod (1-2),
two ends of the first spring (4) are respectively connected on the inner walls of the covers (1-3) and the piston heads (2-11), and the first spring (4) is coaxial with the piston assembly (2),
the shell (14) is provided with a pipe joint (3), a vent hole of the pipe joint (3) is communicated with the interior of the shell (14), the pipe joint (3) is used for introducing compressed air between the outer wall of the piston head (2-11) and the shell (14), the compressed air pushes the piston assembly (2) to move towards the rod (1-2), the ejector pin (2-2) is contacted with the rod (1-2) and pushes the rod (1-2) to move towards the annunciator (1-1) until the rod (1-2) is contacted with the annunciator (1-1), the annunciator (1-1) sends out a deflation valve opening signal with position feedback, the pipe joint (3) is also used for exhausting the compressed air between the outer wall of the piston head (2-11) and the shell (14) to enable the piston assembly (2) to return to the original position under the elastic force of a spring (4), further, the rod (1-2) is separated from the annunciator (1-1), and the air release valve opening signal with position feedback of the annunciator (1-1) is closed.
2. A bleed valve with position feedback for gas turbines according to claim 1, characterised in that it further comprises a second spring (5), the second spring (5) being arranged at the end of the rod (1-2), the second spring (5) being directed towards the ejector pin (2-2) and the second spring (5) being axially telescopic.
3. A bleed valve with position feedback for a gas turbine engine according to claim 1,
the first sliding sealing mechanism comprises a first sealing ring (7) and a first lubricating grease (8),
the second sliding sealing mechanism comprises a second sealing ring (9) and second lubricating grease (10),
a first sealing ring (7) and a first lubricating grease (8) are arranged at the joint of the outer side wall of the piston head (2-11) and the shell (14),
a second sealing ring (9) and second lubricating grease (10) are arranged at the joint of the outer wall of the piston rod (2-12) and the shell (14).
4. A bleed valve with position feedback for gas turbines according to claim 1, characterised in that the piston assembly (2) further comprises a sleeve number one (2-3), the sleeve number one (2-3) is fixedly arranged inside the joint of the piston head (2-11) and the piston rod (2-12), and the sleeve number one (2-3) is coaxial with the piston (2-1), the ejector pin (2-2) is arranged inside the sleeve number one (2-3), and the ejector pin (2-2) is aligned with the rod.
5. A bleed valve with position feedback for a gas turbine application according to claim 4, characterised in that it further comprises a third spring (11),
the tail end of the ejector pin (2-2) is provided with a third spring (11), the third spring (11) is used for fixing the ejector pin (2-2) in the piston rod (2-12) to avoid the ejector pin (2-2) from shaking in the first sleeve (2-3), and the tail end of the ejector pin (2-2) faces the tail end of the piston rod (2-12).
6. A bleed valve with position feedback for application in a gas turbine according to claim 1, characterised in that the bleed valve further comprises bronze (6),
the outer side wall of the piston head (2-11) is provided with bronze (6).
7. The bleed valve with position feedback for a gas turbine engine as claimed in claim 1, wherein said bleed valve further comprises a hard Cr60 coating,
the outer wall of the piston rod (2-12) is provided with a hard Cr60 plating layer.
8. The bleed valve with position feedback for gas turbine according to claim 1, characterized in that the annunciator assembly (1) further comprises a pin (1-5), a locking plate (1-6), a second washer (1-8), a bolt (1-7) and a wire (1-9),
the annunciator (1-1) is fixed on the annunciator bracket (1-4) through a pin (1-5) and a locking plate (1-6),
the annunciator bracket (1-4) and the cover (1-3) are fixed by bolts (1-7),
one end of the rod (1-2) penetrates through the cover (1-3) and the annunciator support (1-4) to extend into the annunciator support (1-4), the second gasket (1-8) and the metal wire (1-9) are sleeved at one end of the rod (1-2), and the second gasket (1-8) and the metal wire (1-9) are used for limiting the axial position of the rod (1-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011366734.3A CN112361061A (en) | 2020-11-30 | 2020-11-30 | Be applied to gas turbine's bleed valve of taking position feedback |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011366734.3A CN112361061A (en) | 2020-11-30 | 2020-11-30 | Be applied to gas turbine's bleed valve of taking position feedback |
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| Publication Number | Publication Date |
|---|---|
| CN112361061A true CN112361061A (en) | 2021-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011366734.3A Pending CN112361061A (en) | 2020-11-30 | 2020-11-30 | Be applied to gas turbine's bleed valve of taking position feedback |
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| CN (1) | CN112361061A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0936357A2 (en) * | 1998-02-13 | 1999-08-18 | PRATT & WHITNEY CANADA INC. | Compressor bleed valve |
| CN201218252Y (en) * | 2008-07-18 | 2009-04-08 | 佛山市南海力丰机床有限公司 | Improved hydraulic cylinder piston rod |
| CN102537441A (en) * | 2010-11-18 | 2012-07-04 | 哈米尔顿森德斯特兰德公司 | Self-actuating bleed valve for a gas turbine engine |
| CN104088706A (en) * | 2014-07-01 | 2014-10-08 | 中国船舶重工集团公司第七�三研究所 | Pneumatic controller for preventing gas turbine from surging and deflating |
| CN204267424U (en) * | 2014-11-13 | 2015-04-15 | 江苏恒立高压油缸股份有限公司 | The oil cylinder piston that cylinder barrel weares and teares can be prevented |
| CN204783279U (en) * | 2015-07-10 | 2015-11-18 | 中国航空工业集团公司沈阳发动机设计研究所 | Pneumatic control bleed valve and have its compressor system and aircraft |
| US20180340472A1 (en) * | 2017-05-25 | 2018-11-29 | Pratt & Whitney Canada Corp. | Tunable resonator |
| CN109838611A (en) * | 2019-01-21 | 2019-06-04 | 浙江中孚流体机械有限公司 | Dual Piston feedback-type band hand-operated valve cylinder |
-
2020
- 2020-11-30 CN CN202011366734.3A patent/CN112361061A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0936357A2 (en) * | 1998-02-13 | 1999-08-18 | PRATT & WHITNEY CANADA INC. | Compressor bleed valve |
| CN201218252Y (en) * | 2008-07-18 | 2009-04-08 | 佛山市南海力丰机床有限公司 | Improved hydraulic cylinder piston rod |
| CN102537441A (en) * | 2010-11-18 | 2012-07-04 | 哈米尔顿森德斯特兰德公司 | Self-actuating bleed valve for a gas turbine engine |
| CN104088706A (en) * | 2014-07-01 | 2014-10-08 | 中国船舶重工集团公司第七�三研究所 | Pneumatic controller for preventing gas turbine from surging and deflating |
| CN204267424U (en) * | 2014-11-13 | 2015-04-15 | 江苏恒立高压油缸股份有限公司 | The oil cylinder piston that cylinder barrel weares and teares can be prevented |
| CN204783279U (en) * | 2015-07-10 | 2015-11-18 | 中国航空工业集团公司沈阳发动机设计研究所 | Pneumatic control bleed valve and have its compressor system and aircraft |
| US20180340472A1 (en) * | 2017-05-25 | 2018-11-29 | Pratt & Whitney Canada Corp. | Tunable resonator |
| CN109838611A (en) * | 2019-01-21 | 2019-06-04 | 浙江中孚流体机械有限公司 | Dual Piston feedback-type band hand-operated valve cylinder |
Non-Patent Citations (1)
| Title |
|---|
| 张允诚等: "《电镀手册》", 31 December 2011, 国防工业出版社 * |
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