CN203906099U - Pneumatic controller applied to surge prevention and deflation of combustion gas turbine - Google Patents
Pneumatic controller applied to surge prevention and deflation of combustion gas turbine Download PDFInfo
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- CN203906099U CN203906099U CN201420356665.1U CN201420356665U CN203906099U CN 203906099 U CN203906099 U CN 203906099U CN 201420356665 U CN201420356665 U CN 201420356665U CN 203906099 U CN203906099 U CN 203906099U
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Abstract
The utility model provides a pneumatic controller applied to surge prevention and deflation of a combustion gas turbine. According to the pneumatic controller, an inflation electromagnet and a deflation electromagnet are combined to control the opening and the closing of a compressed air control flow path; a fault needle valve is arranged to cope with emergency conditions; a piston type switch structure works smoothly and is easy to replace. Gas utilization equipment can be controlled for a long time and the effect for enlarging a stable working range of the combustion gas turbine is useful; the power supply of the electromagnets of the pneumatic controller can be switched on or off in short time, a coil is unlikely to be burned up, and particularly, the safety and reliability are high under occasions with high anti-explosion requirements; compressed air is used as a power source, the manipulation power is strong, the response is sensitive and the maintenance is simple; the size and the space are small so that the pneumatic controller is convenient to mount and adjust at the periphery of the combustion gas turbine and is easy to maintain.
Description
technical field:
The utility model relates to gas turbine component field, is specifically related to a kind of pneumatic controller that is applied to the venting of gas turbine anti-asthma.
background technique:
In gas turbine startup and low operating mode running, be to guarantee gas turbine stable operation nargin, bypath air between compressor stage, improves gas turbine stable operation range.For avoiding compressor surge boundary line, conventionally control upper requirement and cross fast gas turbine transition deflation course, yet, in the actual run with load process of gas turbine, may be longer working time in the low operating mode of transition venting, this just needs pneumatic controller for pressurized air, bypath air valve to be opened for a long time, from function, two-bit triplet solenoid valve also can be realized the control to bypass bleed valve, but solenoid valve needs long-time energising, easily burns coil, dangerous, especially under the requirement that has explosion-proof occasion.For solving above-mentioned two kinds of problems, a kind of pneumatic controller that is applied to the venting of gas turbine anti-asthma of model utility design, take pressure gas source as power, the power supply that switches on and off the electromagnet of pneumatic controller is completed in the short time by control system, from the signal of venting limit switches for powered-down.While not switching on the electromagnet of pneumatic controller, by built-in pneumatic memory, keep the desired location of pneumatic controller, therefore, this pneumatic controller is safe and reliable, control powerful, respond sensitive, safeguard simple.
model utility content:
The purpose of this utility model is to provide a kind of pneumatic controller that is applied to the venting of gas turbine anti-asthma, and this pneumatic controller can be controlled the bleed valve of bypath air between compressor stage.
The utility model is to solve the problems of the technologies described above the technological scheme of taking to be: the pneumatic controller that is applied to the venting of gas turbine anti-asthma, comprise valve body, valve inner has a counterbore, in counterbore, be equipped with successively the piston sleeve being in contact with one another, valve seat and plug, plug sealing thread connects valve body, there is counterbore plug inside, piston sleeve endoporus seal clearance is connected with piston, piston bottom is equipped with the spool being in contact with one another successively, valve seat, spool and spring, spring bottom is against the counterbore bottom of plug, the bar portion of spool and valve seat endoporus Spielpassung, valve base center hole upper and lower are inserted with respectively the bar portion of spool, the umbrella shape head bottom plane of top spool down, the umbrella shape head bottom plane of bottom spool upward, valve seat and spool surface of contact are protruding annulus, there is recessed connection the at discharge orifice and valve seat middle part annulus inside, valve seat middle part recessed position, valve body has through hole and is communicated with and is threaded with gas-charging connection in valve shell surface with valve body is outside,
Between the counterbore of plug and tube wall, have some through holes, the lead to the hole site of plug, has through hole and is communicated with and is threaded with air input joint in valve body surface with valve body is outside on valve body, and air input joint is built-in with filter screen;
On valve body, have two counterbores, venting electromagnet and inflation electromagnet are threaded respectively, venting electromagnet counterbore inside is equipped with little spring, venting armature and armature valve seat, armature valve seat and valve body screw thread are tightly connected, armature valve seat contacts by circular cone anchor ring between armature with venting, and armature valve seat has the center hole of perforation;
Venting duct and throttling hole link are arranged at the armature valve seat bottom of venting armature bottom, the counterbore hole wall top of the valve hole of throttling hole link gas tube joint inner side and the valve body at piston sleeve place, the be threaded throttle orifice of valve body and throttle nozzle of throttle nozzle is between throttling duct, exterior chamber place between venting armature and armature valve seat is provided with the vent hole communicating with outside atmosphere on valve body;
Inflation electromagnet counterbore inside is equipped with little spring, inflation armature and armature valve seat, and armature valve seat and valve body screw thread are tightly connected, and armature valve seat contacts by circular cone anchor ring with inflating between armature, and armature valve seat has the center hole of perforation;
In valve body, have the valve hole of inflation hole link air input joint inner side and the armature valve seat of inflation armature bottom, on the valve body counterbore hole wall at inflation armature place, have the counterbore hole wall top that piston inflation duct is communicated in the valve body at piston sleeve place;
The barrel place, bottom of piston sleeve has some by-pass holes, has exhaust port and be communicated with valve body is outside on the valve body of by-pass hole position, on the barrel of piston sleeve top, has some slots.
Piston sleeve endoporus Spielpassung connects piston, is provided with twice annular groove between piston fitting surface, and annular groove is built-in with teflon packing, between the lip inner side that teflon packing stretches out and piston, is equipped with rubber ring.
The anchor ring position that the bottom plane of the umbrella shape head of spool contacts with valve seat has annular groove, vulcanizes fixedly rubber seal ring in annular groove.
On the valve body counterbore hole wall at inflation armature place, have fault duct and be communicated with valve body is outside, fault duct has a node location to be provided with fault needle-valve; On the hole wall in venting duct, have fault duct and be communicated with valve body is outside, fault duct has a node location to be provided with fault needle-valve.
The utlity model has following beneficial effect: can realize the long-time control to " gas equipment ", improve gas turbine stable operation range and there is good result, switch on and off in power supply short time of electromagnet of pneumatic controller and complete, coil is difficult for burning, safety reliability is high, is especially having under the occasion of requirement of explosion proof; Adopt pressurized air as power source, control powerful, respond sensitive, safeguard simple; Dimensional space is less, and easy to adjust in the peripheral installation of gas turbine, maintaining is easy.
accompanying drawing explanation:
Fig. 1 structural representation of the present utility model;
The structural representation of gas charging valve in Fig. 2 accompanying drawing 1;
Fig. 3 is the structural representation of piston, piston sleeve in accompanying drawing 1;
Accompanying drawing 4 is structural representations of valve seat in accompanying drawing 1.
1-venting electromagnet in figure, the 2-armature of exitting, 3-vent hole, 4-fault needle-valve, 5-fault duct, 6-valve body, 7-gas tube joint, 8-valve seat, 9-plug, 10-spring, 11-filter screen, 12-air input joint, 13-piston, 14-inflates duct, 15-armature valve seat, 16-teflon packing, 17-inflates armature, 18-inflates electromagnet, 19-spool, 20-throttle nozzle, the 21-duct of exitting, 22-throttling duct, 23-exhaust port, 24-piston sleeve, 25-rubber seal ring, 26-rubber ring, 27-by-pass hole, 28-discharge orifice, 29-slot, 30-piston inflation duct.
embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail:
By Fig. 1 in conjunction with shown in Fig. 2～Fig. 4, be applied to the pneumatic controller of gas turbine anti-asthma venting, comprise valve body 6, there is a counterbore valve body 6 inside, in counterbore, be equipped with successively the piston sleeve 24 being in contact with one another, valve seat 8 and plug 9, plug 9 sealing threads connect valve body 6, there is counterbore plug 9 inside, piston sleeve 24 endoporus seal clearances are connected with piston 13, piston 13 bottoms are equipped with the spool 19 being in contact with one another successively, valve seat 8, spool 19 and spring 10, spring 10 bottoms are against the counterbore bottom of plug 9, the bar portion of spool 19 and valve seat 8 endoporus Spielpassung, valve seat 8 center hole upper and lower are inserted with respectively the bar portion of spool 9, the umbrella shape head bottom plane of top spool 19 down, the umbrella shape head bottom plane of bottom spool 19 upward, valve seat 8 and spool 19 surface of contact are protruding annulus, there is recessed connection the at discharge orifice 28 and valve seat 8 middle parts annulus inside, valve seat 8 middle part recessed position, valve body 6 has through hole and is communicated with and is connected with gas tube 7 joint screw threads in valve body 6 case surface with valve body 6 is outside,
Between the counterbore of plug 9 and tube wall, have some through holes, the through hole of plug 9, has through hole and is communicated with and is threaded with air input joint 12 in valve body 6 surfaces with valve body 6 is outside on valve body 6, and air input joint 12 is built-in with filter screen 11;
On valve body 6, have two counterbores, venting electromagnet 1 and inflation electromagnet 18 are threaded respectively, venting electromagnet 1 counterbore inside is equipped with little spring, venting armature 2 and armature valve seat 15, armature valve seat 15 is connected with valve body 6 thread seals, armature valve seat 15 contacts by circular cone anchor ring between armature 2 with venting, and armature valve seat 15 has the center hole of perforation;
Armature valve seat 15 bottoms of venting armature 2 bottoms have venting duct 21 to be communicated with throttling duct 22, throttling duct 22 is communicated with the counterbore hole wall top of valve body 6 through holes of gas tube joint 7 inner sides and the valve body 6 at piston sleeve 24 places, the be threaded throttle orifice of valve body 6 and throttle nozzle 20 of throttle nozzle 20 is between throttling duct 22, and the vent hole 3 of the exterior chamber between venting armature 2 and armature valve seat 15 on valve body 6 communicates with outside atmosphere;
Inflation electromagnet 18 counterbore inside are equipped with little spring, inflation armature 17 and armature valve seat 15, and armature valve seat 15 is tightly connected with valve body screw thread, and armature valve seat 15 contacts by circular cone anchor ring with inflating between armature 17, and armature valve seat 15 has the center hole of perforation;
In valve body 8, have inflation duct 14 and be communicated with valve body 6 through holes of air input joint 12 inner sides and the armature valve seat 15 of inflation armature 17 bottoms, on the valve body 6 counterbore hole walls at inflation armature 17 places, have the counterbore hole wall top that piston inflation duct 30 is communicated in the valve body 6 at piston sleeve 24 places;
The barrel place, bottom of piston sleeve 24 has some by-pass holes 27, has exhaust port 23 and be communicated with valve body 6 is outside on the valve body 6 of by-pass hole 27 positions, on piston sleeve 24 top barrels, has some slots 29.
Piston sleeve 24 endoporus Spielpassung connect piston 13, between piston 13 fitting surfaces, are provided with twice annular groove, and annular groove is built-in with teflon packing 16, between the lip inner side that teflon packing 16 stretches out and piston 13, are equipped with rubber ring 26.
The anchor ring position that the bottom plane of the umbrella shape head of spool 19 contacts with valve seat 8 has annular groove, vulcanizes fixedly rubber seal ring 25 in annular groove.
On the valve body 6 counterbore hole walls at inflation armature 17 places, have fault duct 5 and be communicated with valve body 6 is outside, fault duct 5 has a node location to be provided with fault needle-valve 4; On the hole wall in venting duct 21, have fault duct 5 and be communicated with valve body 6 is outside, fault duct 5 has a node location to be provided with fault needle-valve 4.
Gas turbine is when reaching a certain lower operating mode of setting, and control system is inflated solenoid valve to pneumatic controller, controls gas and inflates to bypath air bleed valve between compressor stage through pneumatic controller, opens bypath air bleed valve.When reaching a certain high operating mode of setting, control system is to the power supply of pneumatic controller pressure-releasing electromagnetic valve, and pneumatic controller vent hole is opened, and bypath air bleed valve is closed in closing control gas passageway simultaneously.
When pneumatic controller is not worked, pressurized air is fed to the below of bottom spool 19 and inflation armature 17 by pipe joint 12 and filter screen 11.Bottom spool 19 presses to the valve seat 8 of oneself under spring 10 and compressed-air actuated effect, covers the path of air flow gas tube joint 7.Top spool 19 is released from the valve seat of oneself, through vent hole 23, gas-charging connection 7 and atmosphere is connected.Inflation armature 17 overwhelms on valve seat 15 by the spring on inflation electromagnet 18.Venting armature 2 overwhelms on valve seat 15 by the spring on venting electromagnet 1.
During to gas equipment supply pressurized air, pneumatic controller work, must be to 18 power supplies of inflation electromagnet.Inflation armature 17 pressuring springs, away from the valve seat of oneself, for pressurized air is opened from the path of suction tude joint 12 chamber above piston 13.Piston 13, at compressed-air actuated effect lower compression spring 10, presses to top spool 19 valve seat of oneself, and bottom spool 19 is unclamped from the valve seat of oneself.Thereby, open pressurized air by suction tude joint 12 passage to gas tube joint 7, cover exhaust port 23.Pressurized air is transported to " gas equipment " through gas tube joint 7.Execute after order, by telltale, send the signal that executed provides instruction, from inflation electromagnet 18, remove power supply.In inflation electromagnet, under little spring 10 effects, inflate the valve seat that armature 17 presses to oneself, at this moment the air pressure in piston 13 upper chambers keeps by the excessive gas of throttle nozzle 20, bottom spool 19 is in releasing orientation from valve seat, pressurized air from suction tude joint 12, through gas tube joint 7 always to " gas equipment " air feed.
When " gas equipment " do not need air feed, by controller, to venting electromagnet 1, powered.Venting armature 2 pressuring springs leave the valve seat of oneself, and the air in piston 13 upper chambers is put into atmosphere through vent hole 3.
Under spring 10 and compressed-air actuated effect, bottom spool 19 presses to the valve seat of oneself, in covering from suction tude joint 12 through gas tube joint 7 air supply channel to " gas equipment ".Top spool leaves the valve seat of oneself, opens gas equipment air vent and enters atmosphere through gas tube joint 7 and exhaust port 23.
After completing instruction, from telltale, provided the electrical signal of given instruction, remove the power supply on venting electromagnet 1.The spring that venting armature 2 is deflated electromagnet 1 presses to own valve seat, and now the air pressure in piston 13 upper chambers is by means of the overflow of throttle nozzle 20, top spool 19 and exhaust port 23, maintenance atmospheric pressure.
For preventing that electromagnet 1 and 18 from damaging, charge failure needle-valve and venting fault needle-valve 4 are set.
The inflation of pneumatic controller and closing process need to lean on spool 19 and valve seat 8 to have good sealability, between part 13 pistons and piston sleeve 24, there is good slip and sealing characteristics, therefore the critical component that spool 19, piston 13 are pneumatic controller, wherein spool 19, valve seat 8 sealing surfaces are inlaid with rubber seal ring 25, under pressurized air and spring pressure effect, rubber seal 25 has good sealing characteristics with valve seat 8 surface of contact; In piston 13 outer channel, teflon packing 16 is installed, inner side has rubber ring 26 to make packing outer swollen, and piston 13 is by having formed good sliding properties and favorable sealing property between teflon packing 16 and rubber ring 26 and piston sleeve 24.
Claims (4)
1. one kind is applied to the pneumatic controller that gas turbine anti-asthma is exitted, comprise valve body (6), it is characterized in that: there is a counterbore valve body (6) inside, in counterbore, be equipped with successively the piston sleeve (24) being in contact with one another, valve seat (8) and plug (9), plug (9) sealing thread connects valve body (6), there is counterbore plug (9) inside, piston sleeve (24) endoporus seal clearance is connected with piston (13), piston (13) bottom is equipped with the spool (19) being in contact with one another successively, valve seat (8), spool (19) and spring (10), spring (10) bottom is against the counterbore bottom of plug (9), the bar portion of spool (19) and valve seat (8) endoporus Spielpassung, valve seat (8) center hole upper and lower are inserted with respectively the bar portion of spool (9), the umbrella shape head bottom plane of top spool (19) down, the umbrella shape head bottom plane of bottom spool (19) upward, valve seat (8) and spool (19) surface of contact are protruding annulus, there is recessed connection the at discharge orifice (28) and valve seat (8) middle part annulus inside, valve seat (8) middle part recessed position, valve body (6) has through hole and is communicated with and is threaded with gas tube joint (7) in valve body (6) case surface with valve body (6) is outside,
Between the counterbore of plug (9) and tube wall, have some through holes, the through hole of plug (9), on valve body (6), have through hole and be communicated with and be threaded with air input joint (12) in valve body (6) surface with valve body (6) is outside, air input joint (12) is built-in with filter screen (11);
On valve body (6), have two counterbores, venting electromagnet (1) and inflation electromagnet (18) are threaded respectively, venting electromagnet (1) counterbore inside is equipped with little spring, venting armature (2) and armature valve seat (15), armature valve seat (15) is connected with valve body (6) thread seal, between armature valve seat (15) and venting armature (2), by circular cone anchor ring, contact, armature valve seat (15) has the center hole of perforation;
Armature valve seat (15) bottom of venting armature (2) bottom has venting duct (21) to be communicated with throttling duct (22), throttling duct (22) is communicated with the counterbore hole wall top of valve body (6) through hole of gas tube joint (7) inner side and the valve body (6) at piston sleeve (24) place, the be threaded throttle orifice of valve body (6) and throttle nozzle (20) of throttle nozzle (20) is between throttling duct (22), exterior chamber place between venting armature (2) and armature valve seat (15) is provided with the vent hole (3) communicating with outside atmosphere on valve body (6);
Inflation electromagnet (18) counterbore inside is equipped with little spring, inflation armature (17) and armature valve seat (15), armature valve seat (15) is tightly connected with valve body screw thread, between armature valve seat (15) and inflation armature (17), by circular cone anchor ring, contact, armature valve seat (15) has the center hole of perforation;
In valve body (6), have inflation duct (14) and be communicated with valve body (6) through hole of air input joint (12) inner side and the armature valve seat (15) of inflation armature (17) bottom, on valve body (6) the counterbore hole wall at inflation armature (17) place, have the counterbore hole wall top that piston inflation duct (30) is communicated in the valve body (6) at piston sleeve (24) place;
The barrel place, bottom of piston sleeve (24) has some by-pass holes (27), on the valve body (6) of by-pass hole (27) position, have exhaust port (23) and be communicated with valve body (6) is outside, on the barrel of piston sleeve (24) top, have some slots (29).
2. the pneumatic controller that is applied to gas turbine anti-asthma venting according to claim 1, it is characterized in that: piston sleeve (24) endoporus Spielpassung connects piston (13), between piston (13) fitting surface, be provided with twice annular groove, annular groove is built-in with teflon packing (16), between the lip inner side that teflon packing (16) stretches out and piston (13), is equipped with rubber ring (26).
3. the pneumatic controller that is applied to gas turbine anti-asthma venting according to claim 1, it is characterized in that: the bottom plane of the umbrella shape head of spool (19) has annular groove with the anchor ring position that valve seat (8) contacts, in annular groove, vulcanize fixedly rubber seal ring (25).
4. the pneumatic controller that is applied to gas turbine anti-asthma venting according to claim 1, it is characterized in that: on valve body (6) the counterbore hole wall at inflation armature (17) place, have fault duct (5) and be communicated with valve body (6) is outside, fault duct (5) have a node location to be provided with fault needle-valve (4); On the hole wall in venting duct (21), have fault duct (5) and be communicated with valve body (6) is outside, fault duct (5) have a node location to be provided with fault needle-valve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420356665.1U CN203906099U (en) | 2014-07-01 | 2014-07-01 | Pneumatic controller applied to surge prevention and deflation of combustion gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420356665.1U CN203906099U (en) | 2014-07-01 | 2014-07-01 | Pneumatic controller applied to surge prevention and deflation of combustion gas turbine |
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| Publication Number | Publication Date |
|---|---|
| CN203906099U true CN203906099U (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420356665.1U Active CN203906099U (en) | 2014-07-01 | 2014-07-01 | Pneumatic controller applied to surge prevention and deflation of combustion gas turbine |
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| CN (1) | CN203906099U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105952540A (en) * | 2016-05-25 | 2016-09-21 | 中国科学院工程热物理研究所 | Stable working margin adjusting system of multistage compressor |
-
2014
- 2014-07-01 CN CN201420356665.1U patent/CN203906099U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105952540A (en) * | 2016-05-25 | 2016-09-21 | 中国科学院工程热物理研究所 | Stable working margin adjusting system of multistage compressor |
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