CN112178256A - Large-size stable-speed anti-surge air release valve - Google Patents
Large-size stable-speed anti-surge air release valve Download PDFInfo
- Publication number
- CN112178256A CN112178256A CN202011055840.XA CN202011055840A CN112178256A CN 112178256 A CN112178256 A CN 112178256A CN 202011055840 A CN202011055840 A CN 202011055840A CN 112178256 A CN112178256 A CN 112178256A
- Authority
- CN
- China
- Prior art keywords
- valve
- rod
- piston
- cover plate
- body cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims description 9
- 239000004519 grease Substances 0.000 claims description 8
- 230000000087 stabilizing effect Effects 0.000 claims 3
- 230000009471 action Effects 0.000 description 7
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 230000001050 lubricating effect Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
Classifications
-
- 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
- F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
- F16K24/04—Devices, e.g. valves, for venting or aerating enclosures for venting only
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The invention discloses a large-size stable-speed anti-surge air release valve which comprises a butterfly valve, a piston valve rod, a valve shell, a microswitch, a valve body cover plate, a spring, an ejector rod, an ejector pin and a pipe joint, wherein the butterfly valve is arranged on the valve body cover plate; the piston valve rod comprises a piston valve rod head, a piston valve rod middle part and a piston valve rod tail part, a center hole of the butterfly valve is connected with the piston valve rod head in a matched mode, the center hole of the valve shell is connected with the piston valve rod middle part in a matched mode, a closed space is formed between the valve shell and the piston valve rod tail part, a pipe joint is connected onto the valve shell and communicated with the closed space through a throttling hole, the free end of the valve shell is connected with a valve body cover plate, a micro switch is fixed on the outer side of the valve body cover plate, an ejector rod penetrates through the center of the valve body cover plate and is provided with an ejector pin, a top pin is fixed on the piston valve rod, the ejector rod and the. The invention can prevent air flow impact, make the air release valve work steadily, reduce the failure rate of the valve block.
Description
Technical Field
The invention belongs to the field of functions and debugging of valves of a pneumatic control system of an engine, and particularly relates to a large-size stable-speed anti-surge air release valve.
Background
The air release valve is an air release device when the engine is started, and keeps the flow not to enter a surge area. When the flow rate of the anti-surge system is reduced to a certain safe lower limit, the air release valve communicated with the atmosphere is automatically opened, the flow rate passing through the air compressor is increased, and the anti-surge system is prevented from entering a surge area. The current air release valve is easy to have the faults of air release valve clamping stagnation, air leakage and no feedback signal in use.
Disclosure of Invention
The invention aims to provide a large-size stable-speed anti-surge air release valve to solve the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a large-size stable-speed anti-surge air release valve comprises a butterfly valve, a piston valve rod, a valve shell, a microswitch, a valve body cover plate, a spring, an ejector rod, an ejector pin and a pipe joint;
the piston valve rod comprises a piston valve rod head, a piston valve rod middle part and a piston valve rod tail part, a center hole of the butterfly valve is connected with the piston valve rod head in a matched mode, the center hole of the valve shell is connected with the piston valve rod middle part in a matched mode, a closed space is formed between the valve shell and the piston valve rod tail part, a pipe joint is connected onto the valve shell and communicated with the closed space through a throttling hole, the free end of the valve shell is connected with a valve body cover plate, a micro switch is fixed on the outer side of the valve body cover plate, an ejector rod penetrates through the center of the valve body cover plate and is provided with an ejector pin, a top pin is fixed on the piston valve rod, the ejector rod and the.
Further, the head of the piston valve rod and the central hole of the butterfly valve are fixed through a nut and a gasket.
Further, a sealing ring B is arranged between the middle part of the piston valve rod and a central hole of the valve shell, and a sealing ring A is arranged between the tail part of the piston valve rod and the inner wall of the valve shell.
Further, a first annular groove for filling lubricating grease is arranged between the tail part of the piston valve rod and the inner wall of the valve shell.
Further, a second annular groove for filling lubricating grease is arranged between the middle part of the piston valve rod and the central hole of the valve shell.
Further, the ejector pin is embedded in the middle of the piston valve rod and fixed through a gasket and a screw; the ejector rod is embedded in the middle of the valve body cover plate and is fixed through a gasket and a screw.
Further, the valve housing and the valve body cover plate are fixed through a housing fastening screw.
Further, the valve housing has an inner diameter 1.1 to 1.3 times the length.
Further, the inner diameter of the throttle hole is 1-2 mm.
Furthermore, the difference between the distance between the inner end surface of the valve body cover plate and the free end of the ejector rod and the distance between the inner end surface of the piston valve rod and the free end of the ejector pin is 1.5-1.8 mm.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention reduces the environmental temperature of the electrical system on one hand and cancels the limit of the design volume of the microswitch on the other hand by improving the structure of the air release valve and arranging the actuated microswitch outside the valve body, thereby expanding the selection range of the performance, replacing the original microswitch by the microswitch with more reliable performance index, thoroughly solving the faults of the large-size stable speed anti-surge air release valve and reducing the fault rate to 30 percent to 0.
Furthermore, the cross section of the air release valve is increased, the size of the air release throttling hole is reduced, and the air release valve is more stable in air inflation due to the large gas action area; because the throttling hole is small, the deflation process of the deflation valve is more stable.
Furthermore, the invention increases the compression amount of the ejector pin, increases the action stroke (L is L1-L2) after the micro switch is triggered, increases the contact displacement between the ejector pin and the micro switch, and increases the action reliability of switching on the micro switch.
Drawings
FIG. 1 is a schematic view of a large-sized speed-stabilizing anti-surge gas release valve according to the present invention;
FIG. 2 is a schematic view of the compression of the ejector pin of the purge valve of the present invention.
Wherein, 1, butterfly valve; 2. a nut; 3. a piston valve stem head; 4. a gasket; 5. a piston valve stem; 6. a valve housing; 7. an orifice; 8. a microswitch; 9. a valve body cover plate; 10. a spring; 11. a housing fastening screw; 12. a screw; 13. a knock pin; 14. a top rod; 15. a sealing ring A; 16. a seal ring B; 17. a pipe joint; t, a first annular groove; t1, second annular groove; l1, the distance between the inner end face of the valve body cover plate and the free end of the ejector rod; l2, distance between the inner end surface of the piston stem and the free end of the knock pin.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1 and 2, the large-size stable-speed anti-surge gas release valve comprises a butterfly valve 1, a piston valve rod 5, a valve shell 6, a microswitch 8, a valve body cover plate 9, a spring 10, a push rod 13, a push pin 14 and a pipe joint 17.
The piston valve rod 5 comprises a piston valve rod head 3, a piston valve rod middle part and a piston valve rod tail part, a center hole of the butterfly valve 1 is connected with the piston valve rod head 3 in a matched mode through a nut 2 and a gasket 4, a center hole of the valve housing 6 is connected with the piston valve rod middle part in a matched mode, a closed space is formed between the valve housing 6 and the piston valve rod tail part, a sealing ring B16 is arranged between the piston valve rod middle part and the center hole of the valve housing 6, a sealing ring A15 is arranged between the piston valve rod tail part and the inner wall of the valve housing 6, a first annular groove T used for filling lubricating grease is arranged between the piston valve rod tail part and the inner wall of the valve housing 6, a second annular groove T1 used for filling the lubricating grease is arranged between the piston valve rod middle part and the center hole, the free end of the valve shell 6 is connected with a valve body cover plate 9, the valve shell 6 and the valve body cover plate 9 are fixed through a shell fastening screw 11, a microswitch 8 is fixed on the outer side of the valve body cover plate 9, an ejector rod 14 penetrates through the center of the valve body cover plate 9, an ejector pin 13 is fixed on the piston valve rod 5, the ejector rod 14 and the ejector pin 13 are located on the same axis, and the ejector pin 13 is embedded in the middle of the piston valve rod 5 and fixed through a gasket and a screw; the ejector rod 14 is embedded in the middle of the valve body cover plate 9 and fixed through a gasket and a screw 12, and a spring 10 is arranged between the tail of the piston valve rod and the inner side of the valve body cover plate 9.
The inner diameter of the valve housing 6 is 1.1 to 1.3 times its length; the inner diameter of the throttling hole 7 is 1-2 mm; the difference between the distance L1 between the inner end surface of the valve body cover plate and the free end of the ejector rod and the distance L2 between the inner end surface of the piston valve rod and the free end of the ejector pin is 1.5-1.8 mm.
The present invention will be described in further detail with reference to specific examples below:
referring to fig. 1 and 2, the central hole of the butterfly valve 1 is connected with the piston stem 5, the valve disc 1 is locked with the piston stem head 3 by the nut 2 and the washer 4, the valve housing 6 is sealed with the piston stem 5 by the sealing ring B16, and the hole of the second annular groove T1 is filled with grease for maintaining the flexibility of sliding. The sealing ring A15 seals the tail part of the piston valve rod 5 and the valve shell 6, the spring 10 is installed between the tail part of the piston valve rod and the valve body cover plate 9, and the ejector pin 13 is embedded into the middle of the piston valve rod 5 and is fixed by a gasket and a screw. The ejector rod 14 is embedded in the middle of the valve body cover plate 9 and is fixed by a gasket and a screw 12. The microswitch 8 is vertically fixed with the valve body cover plate 9 by a bracket. When air is supplied to the pipe joint 17 under a pressure, the piston valve rod 5 completes a complete stroke and is leaned against the free end of the mandril 14, and the micro switch 8 outputs an accurate electric signal.
The invention can prevent air flow impact, make the deflation and inflation processes of the deflation valve work stably, and reduce the failure rate of the valve body, and comprises the following specific steps: increasing the cross section of the purge valve increases the purge valve size (15% -25%). When the pressure per unit area is reduced (P is F/S) and the flow rate is equal, the speed with large cross-sectional area is small (v is q/A), when the air release valve is inflated, the air flow impact is small, and the action speed is stable. The cross section of the deflation valve (i.e. the inner diameter of the valve housing 6) is enlarged, so that the inner diameter is 1.1-1.3 times of the length of the deflation valve; by reducing the size of the bleed orifice 7, the inlet tap orifice size is reduced 1/3-2/3, and the orifice size before modification is φ 3. The size of the orifice is phi 1-phi 2 after improvement, so that when the air release valve releases air, the size of the orifice of the air release valve is reduced, the return rate of the spring 10 is reduced, and the air release of the air release valve is more stable; the compression amount of the ejector pin is increased, the compression amount of the ejector pin before improvement is 0.3-0.5 mm, the compression amount of the ejector pin after improvement is L1-L2 is 1.5-1.8mm, and L1 is the distance between the inner end face of the valve body cover plate and the free end of the ejector pin; l2 is the distance between the inner end surface of the piston valve rod and the free end of the knock pin, the knock pin compression is increased, and after the micro switch is triggered, a larger action displacement is selected; in addition, the microswitch 8 is arranged outside the valve shell, the selection range of the microswitch is expanded, meanwhile, the microswitch with high strength and reliability and large size can be selected, and the electric service life can be increased to 11000 times under the condition that the size of the microswitch is increased by two times.
The debugging process of the air release valve specifically comprises the following steps:
1) before the valve is assembled, the pairing of the piston valve rod 5 and the valve shell 6 is checked, the piston valve rod 5 can move under the action of self weight, and the valve rod 5 rotates for 4 times at 90 degrees around the axis of the piston valve rod 5.
2) The second annular groove T1 and the first annular groove T passage are filled with high grease.
3) When air is supplied to the pipe joint 17 under the pressure of 0.03-0.15 MPa, the piston valve rod 5 finishes the complete stroke and leans against the free end of the ejector rod 14, and the micro switch 8 outputs an accurate electric signal. In this case, the difference between the distance between the inner end surface of the valve body cover plate and the free end of the ejector rod and the distance between the inner end surface of the piston valve rod and the free end of the ejector pin is 1.5-1.8mm, which is ensured by cutting the end surface of the part.
4) When the air is discharged, the piston valve rod 5 is restored to the original position under the action of the spring 10.
5) The check was repeated 3 times for the working conditions of the valves according to 3) and 4).
6) The piston is pressed to lock the nut 2 to the stem groove to fix the insertion length of the piston stem 5, which is not reused.
Claims (10)
1. A large-size stable-speed anti-surge air release valve is characterized by comprising a butterfly valve (1), a piston valve rod (5), a valve shell (6), a microswitch (8), a valve body cover plate (9), a spring (10), a push rod (13), a push pin (14) and a pipe joint (17);
the piston valve rod (5) comprises a piston valve rod head part (3), a piston valve rod middle part and a piston valve rod tail part, the center hole of the butterfly valve (1) is connected with the head part (3) of the piston valve rod in a matching way, the center hole of the valve shell (6) is connected with the middle part of the piston valve rod in a matching way, and a closed space is formed between the valve shell (6) and the tail part of the piston valve rod, a pipe joint (17) is connected on the valve shell (6), the pipe joint (17) is communicated with the closed space through a throttling hole (7), the free end of the valve shell (6) is connected with a valve body cover plate (9), a microswitch (8) is fixed on the outer side of the valve body cover plate (9), an ejector rod (14) is inserted in the center of the valve body cover plate (9), an ejector pin (13) is fixed on the piston valve rod (5), and the ejector rod (14) and the ejector pin (13) are positioned on the same axis, and a spring (10) is arranged between the tail part of the piston valve rod and the inner side of the valve body cover plate (9).
2. A large size steady speed anti-surge gas release valve according to claim 1, characterized in that the piston stem head (3) and the center hole of the butterfly valve (1) are fixed by a nut (2) and a washer (4).
3. A large-size stable-speed anti-surge gas release valve according to claim 1, characterized in that a sealing ring B (16) is arranged between the middle part of the piston valve rod and the central hole of the valve housing (6), and a sealing ring A (15) is arranged between the tail part of the piston valve rod and the inner wall of the valve housing (6).
4. A large size speed stabilizing anti-surge gas release valve according to claim 1, wherein a first annular groove (T) for filling grease is provided between the tail of the piston valve stem and the inner wall of the valve housing (6).
5. A large size speed stabilizing anti-surge gas release valve according to claim 1, characterized in that a second annular groove (T1) for filling grease is provided between the middle part of the piston valve stem and the central hole of the valve housing (6).
6. A large-sized speed-stabilized anti-surge gas-release valve according to claim 1, wherein the ejector pin (13) is embedded in the middle of the piston valve rod (5) and fixed by a gasket and a screw; the ejector rod (14) is embedded in the middle of the valve body cover plate (9) and is fixed through a gasket and a screw (12).
7. A large size speed stabilizing anti-surge gas release valve according to claim 1, wherein the valve housing (6) and the valve body cover plate (9) are fixed by a housing fastening screw (11).
8. A large size speed stabilized anti-surge gas release valve according to claim 1, wherein the inner diameter of the valve housing (6) is 1.1-1.3 times the length.
9. A large size constant speed anti-surge gas release valve according to claim 1, wherein the inner diameter of the orifice (7) is 1-2 mm.
10. The large-sized speed-stabilizing anti-surge gas release valve as claimed in claim 1, wherein the difference between the distance (L1) between the inner end surface of the valve body cover plate and the free end of the ejector pin and the distance (L2) between the inner end surface of the piston valve rod and the free end of the ejector pin is 1.5-1.8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011055840.XA CN112178256A (en) | 2020-09-29 | 2020-09-29 | Large-size stable-speed anti-surge air release valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011055840.XA CN112178256A (en) | 2020-09-29 | 2020-09-29 | Large-size stable-speed anti-surge air release valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112178256A true CN112178256A (en) | 2021-01-05 |
Family
ID=73946998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011055840.XA Pending CN112178256A (en) | 2020-09-29 | 2020-09-29 | Large-size stable-speed anti-surge air release valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112178256A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9318050D0 (en) * | 1992-09-16 | 1993-10-20 | Pall Corp | Automatic pressurized reservoir bleed valve |
| CN101373030A (en) * | 2008-10-21 | 2009-02-25 | 上海宏翔机械制造有限公司 | Pneumatic two-position two-way piston type multi-medium angle seat valve with buffer |
| RU89631U1 (en) * | 2009-08-12 | 2009-12-10 | Открытое акционерное общество Конструкторско-производственное предприятие "Авиамотор" | DEVICE FOR DRIVING THE EXECUTIVE MECHANISM |
| CN202646795U (en) * | 2011-12-14 | 2013-01-02 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Pressure refueling control valve |
| CN202946714U (en) * | 2012-11-28 | 2013-05-22 | 浙江中旭达自控阀门有限公司 | Pneumatic diaphragm valve |
| CN106438055A (en) * | 2015-08-11 | 2017-02-22 | 通用电气航空系统有限责任公司 | Air pressure regulator |
| US20170219118A1 (en) * | 2016-01-28 | 2017-08-03 | Hamilton Sundstrand Corporation | Bleed valve position sensor |
-
2020
- 2020-09-29 CN CN202011055840.XA patent/CN112178256A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9318050D0 (en) * | 1992-09-16 | 1993-10-20 | Pall Corp | Automatic pressurized reservoir bleed valve |
| CN101373030A (en) * | 2008-10-21 | 2009-02-25 | 上海宏翔机械制造有限公司 | Pneumatic two-position two-way piston type multi-medium angle seat valve with buffer |
| RU89631U1 (en) * | 2009-08-12 | 2009-12-10 | Открытое акционерное общество Конструкторско-производственное предприятие "Авиамотор" | DEVICE FOR DRIVING THE EXECUTIVE MECHANISM |
| CN202646795U (en) * | 2011-12-14 | 2013-01-02 | 中国航空工业集团公司金城南京机电液压工程研究中心 | Pressure refueling control valve |
| CN202946714U (en) * | 2012-11-28 | 2013-05-22 | 浙江中旭达自控阀门有限公司 | Pneumatic diaphragm valve |
| CN106438055A (en) * | 2015-08-11 | 2017-02-22 | 通用电气航空系统有限责任公司 | Air pressure regulator |
| US20170219118A1 (en) * | 2016-01-28 | 2017-08-03 | Hamilton Sundstrand Corporation | Bleed valve position sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111981168A (en) | Pilot operated safety valve | |
| CN112178256A (en) | Large-size stable-speed anti-surge air release valve | |
| CN210770311U (en) | Pneumatic type trip valve | |
| CN112178211B (en) | Ultralow-temperature electromagnetic pneumatic stop valve | |
| CN102937202B (en) | A kind of automatic pressure reducing valve | |
| CN216242427U (en) | Composite sealing ball valve | |
| CN108679279B (en) | Built-in safety valve | |
| CN212960042U (en) | Pilot valve structure of pilot operated safety valve | |
| CN217873032U (en) | Cylinder head | |
| CN219570898U (en) | Plunger type stop valve special for sulfur hexafluoride gas | |
| CN216923254U (en) | Valve sealing structure | |
| CN215059675U (en) | Soft sealing ball valve with middle cavity pressure relief function | |
| CN218717443U (en) | High pressure/superhigh pressure diaphragm compressor air valve | |
| CN219453050U (en) | Leakage-proof explosion-proof intelligent micro-electric valve for gas bottle | |
| CN216279581U (en) | Check valve and test equipment | |
| CN213479198U (en) | Gas regulating valve | |
| CN217653317U (en) | High-pressure gas filling valve and valve seat device | |
| CN209892767U (en) | Floating seal valve seat of gas pressure regulator | |
| CN220134704U (en) | Large-flow pressure-maintaining valve capable of manually releasing pressure | |
| CN115773383A (en) | Composite sealing ball valve | |
| CN210398049U (en) | Integral gas-liquid conical surface sealing pressure measuring joint | |
| CN215928505U (en) | Exhaust one-way valve of compressor | |
| CN219587690U (en) | Air flow valve group adjusting device | |
| CN211525595U (en) | Valve for compressed natural gas | |
| CN218266582U (en) | Multi-sealing material ejection cylinder of screw press |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210105 |
|
| RJ01 | Rejection of invention patent application after publication |