CN107806522A - A kind of steam-extracting type speed closes non-return valve and its method of work - Google Patents
A kind of steam-extracting type speed closes non-return valve and its method of work Download PDFInfo
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- CN107806522A CN107806522A CN201711196854.1A CN201711196854A CN107806522A CN 107806522 A CN107806522 A CN 107806522A CN 201711196854 A CN201711196854 A CN 201711196854A CN 107806522 A CN107806522 A CN 107806522A
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- 238000000034 method Methods 0.000 title claims description 12
- 238000007789 sealing Methods 0.000 claims description 13
- 238000010276 construction Methods 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 239000003921 oil Substances 0.000 description 42
- 210000003660 reticulum Anatomy 0.000 description 20
- 230000009471 action Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012208 gear oil Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- F16K15/00—Check valves
- F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
- F16K15/182—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism
- F16K15/1821—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism for check valves with a hinged or pivoted closure member
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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
- F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
- Control Of Turbines (AREA)
Abstract
The invention discloses a kind of steam-extracting type speed to close non-return valve, check-valves including interconnection, cylinder component and control-rod, check-valves includes valve seat, primary air inlet, bonnet, gas outlet, valve, valve disc and valve rod, valve rod front end connects valve and control-rod lower end, cylinder component includes cylinder body, main oil inlet and speed close control device and piston rod, piston and piston spring, the rear end connection piston of piston rod, cylinder body is fixed on bonnet, the front end of piston rod and the rear end of valve rod connect, speed closes control device and is provided with speed pass oil inlet, speed closes the close stem side that oil inlet is located at piston with piston rod, main oil inlet is located at the remote stem side of piston with piston spring, bonnet is provided with extra-air inlet, extra-air inlet is located at the remote valve side of valve disc.The present invention can accomplish that speed pass is integrated with check, and compact-sized, price is low, and can accomplish balance of steam, and stability in use is good, ensure to close fast reliability.
Description
Technical field
The present invention relates to a kind of valve, more particularly to a kind of steam-extracting type speed to close non-return valve and its method of work.
Background technology
Non-return valve (also known as check-valves) refers to flow in itself by medium and automatic open and close flap, for preventing medium from falling
The valve of stream, therefore, non-return valve closing process need fast and reliable；At present, domestic technique is difficult to close non-return valve and speed to control
Device combines, and is all to close non-return valve from external import speed, and the speed of external import closes non-return valve, not only expensive, and
And it is complicated, and difficulty is matched with some domestic steam turbines, balance of steam can not be accomplished, it is inadequate to use stability
Height, it can not ensure that non-return valve can be closed rapidly and thoroughly.
The content of the invention
The present invention is in order to solve defect present in above-mentioned prior art and deficiency, there is provided one kind can accomplish speed close with
Check integration, compact-sized, price is low, and can accomplish balance of steam, and stability in use is good, ensures to close fast reliability
Steam-extracting type speed close non-return valve and its method of work.
Technical scheme：A kind of steam-extracting type speed closes non-return valve, including the check-valves of interconnection, cylinder component and
Control-rod, the check-valves include valve seat, be arranged on the primary air inlet of valve seat side, be arranged on valve seat opposite side bonnet, set
Put in the gas outlet of seat bottom portion, the valve being arranged at primary air inlet, the valve disc and valve rod being arranged on bonnet, the valve rod
Front end connects valve and control-rod lower end, and the cylinder component includes cylinder body, the main oil inlet being arranged on cylinder body and speed and closes control
The device processed and piston rod being arranged in cylinder body, piston and piston spring, the rear end connection piston of the piston rod, the cylinder
Body is fixed on bonnet, and the front end of the piston rod and the rear end of valve rod connect, and the speed closes control device and closes oil provided with speed
Import, the speed close the close stem side that oil inlet is located at piston with piston rod, and the main oil inlet is located at piston spring lives
The remote stem side of plug, the bonnet are provided with extra-air inlet, and the extra-air inlet is located at the remote valve side of valve disc.
The present invention is using the fast valve rod action opening valve for closing control device cooperation cylinder component driving non-return valve and quickly
Valve is closed, can accomplish that speed pass is integrated with check, compact-sized, price is low, and can accomplish balance of steam, uses stable
Property it is good, ensure that valve closes fast reliability, and interchangeability is strong, and utilization rate is high.
Preferably, the valve rod front end is provided with globe journal, and the valve, which is provided with, coordinates the hemispherical of globe journal recessed
Groove, the globe journal are covered tightly after loading hemispherical groove by blind flange, and the control-rod lower end is arranged on the outside of blind flange
Locked by a locking nut.
This kind of structure ensures the connectivity robustness of valve rod and valve, so that it is guaranteed that the stability of valve rod driving valve opening and closing.
Preferably, the bonnet is connected with cylinder body by a contiguous block, and the speed is closed control device and is arranged on contiguous block,
The oil circuit for coordinating speed to close control device is provided with the contiguous block, the first sealing shroud is provided between the contiguous block and piston rod
Cylinder.
The convenient speed of this kind of structure closes the installation and action of control device, it is ensured that the degree of firmly installing of cylinder component, so as to really
The sealing of keep-alive stopper rod and contiguous block.
Preferably, capping is provided with the bonnet with valve seat connection end, bushing is provided between the capping and valve rod, it is described
Position-arresting disk is provided with the middle part of bonnet, the second seal sleeve is provided between the position-arresting disk and valve rod, the valve disc is positioned at capping and limit
Between the disk of position.
Capping, valve disc and also having for position-arresting disk act on as follows：Just in case when cylinder seal part damage speed pass oil leaks, it can hinder
Gear oil is sprayed onto high-temperature part；Stop that valve lever clearance leaks out steam to oil cylinder.
Preferably, the valve disc is locked by 1 type hex nut and adjusting screw and valve rod, the position-arresting disk and valve rod it
Between be provided with soft graphite circle, the soft graphite circle is compressed by clamp nut.
This kind of structure is further ensured that between the degree of being connected firmly of valve disc and valve rod and sealing and position-arresting disk and valve rod
Sealing.
Preferably, the sleeve construction section for coordinating the second seal sleeve is provided with the left of the position-arresting disk, is provided with the right side of position-arresting disk
Coordinate the nut construction section of clamp nut；Connected between the piston rod and valve rod by a shaft coupling, the shaft coupling is located at
Between position-arresting disk and contiguous block.
This kind of structure further ensures that the connection between the degree of being connected firmly of position-arresting disk and bonnet, and valve rod and piston rod
Firmness.
Preferably, the spring base for coordinating piston spring is provided with the middle part of the cylinder body, the piston spring includes being located at spring
Left outside coil spring, left coil spring and the left inside coil spring in seat left side and the right cycle spring on the right side of spring base, the right side
Coil spring in middle coil spring and the right side.
This kind of structure ensures the degree of firmly installing and action stability of piston spring.
Preferably, the bonnet includes valve seat linkage section and contiguous block linkage section, and the position-arresting disk is located at valve seat linkage section
Between contiguous block linkage section, the valve seat linkage section includes inserting paragraph, construction section and changeover portion, and the extra-air inlet was located at
Cross in section.
This kind of structure ensures the degree of being connected firmly between bonnet and valve seat and oil cylinder.
Preferably, the extra-air inlet is provided with check valve and balance pipe, and the check valve connects air inlet by pipe joint
Pipe, the extra-air inlet are obliquely installed, and are provided with a plug at the top of extra-air inlet, are provided between the plug and extra-air inlet close
Seal.
Steam is reached at piston by balance pipe during unlatching, reaches balance with outside, reduction opening force, passes through list during closing
To valve steel ball drop, it is ensured that closing velocity, this kind of structure ensure the air inlet stability and reliability of extra-air inlet.
A kind of method of work of steam-extracting type speed pass non-return valve, 1）Speed closes non-return valve unlatching:When speed is closed non-return valve and not opened,
The oil that main oil inlet is come in, the right side of oil cylinder piston is in, auxiliary piston spring carries out closing speed pass check-valves, and steam is through steamer
Primary air inlet on the left of valve is passed into extraction steam pipe net horizontal direction after machine acting, while check valve of the steam through extra-air inlet enters
Enter on the right side of piston plate, valve is pressed on valve seat under piston spring closing forces and steam power effect, and draw gas pipe network steam quilt
Cut-out；
2）When steam turbine need to draw gas or during filling, quick closedown oil closes oil inlet by speed and enters oil cylinder to piston left side, with
The slow foundation of oil pressure, piston overpowers piston spring closing forces band ovable valve stem slowly move right, and valve is in left chamber therewith
Steam power effect under be opened, steam, which by gas outlet enters speed and closes the outlet of non-return valve, to draw gas in pipe network；
3）In speed closes non-return valve opening process or after closing, some steam is along valve rod and the second seal sleeve interior sealing
Gap between part leaks out；And the sealing surface of valve rod and the second seal sleeve is brought into close contact after fast non-return valve standard-sized sheet, valve
Bar leakage vapour is blocked；
4）Speed closes non-return valve closing：When filling or draw gas meets, speed closes the electromagnetism Vavle switching on control device, main oil inlet
Oil-feed, speed close oil inlet oil return, and speed closes check-valves in the presence of piston spring closing forces and oil pressure, closes valve rapidly, cut
Break into vapour.
The present invention is using the fast valve rod action opening valve for closing control device cooperation cylinder component driving non-return valve and quickly
Valve is closed, can accomplish that speed pass is integrated with check, compact-sized, price is low, and can accomplish balance of steam, uses stable
Property it is good, ensure close fast reliability.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the schematic side view of the present invention；
Fig. 3 is the structural representation of cylinder interior in the present invention；
Fig. 4 is the structural representation of bonnet in the present invention；
1. primary air inlet in figure, 2. extra-air inlets, 3. globe journals, 4. valve, 5. control-rods, 6. valve seats, 7. cappings, 8. valves
Disk, 9. valve rods, 10. first seal sleeves, 11. clamp nuts, 12. soft graphite circles, 13.1 font hex nuts, 14. bonnets,
15. main oil inlet, 16. spring bases, 17. pistons, 18. contiguous blocks, 19. speed close oil inlet, 20. speed close control device, 21. pistons
Bar, 22. shaft couplings, 23. blind flanges, 24. gas outlets, 25. position-arresting disks, 26. sleeve construction sections, 27. nut construction sections, 28. cylinders
Body, 29. adjusting screws, 30. second seal sleeves, 31. plugs, 32. check valves, 33. air inlet pipe, 34. left outside coil springs, 35.
Right cycle spring, 36. left coil springs, 37. right middle coil springs, 38. left inside coil springs, coil spring in 39. right sides, 40. insert
Enter section, 41. construction sections, 42. changeover portions, 43. contiguous block linkage sections.
Embodiment
The invention will now be described in further detail with reference to the accompanying drawings, but is not the limit to the scope of the present invention
System.
As Figure 1-4, a kind of steam-extracting type speed closes non-return valve, including the check-valves of interconnection, cylinder component and control
Bar 5.Check-valves includes valve seat 6, the bonnet 14 for being arranged on the primary air inlet 1 of the side of valve seat 6, being arranged on the opposite side of valve seat 6, setting
In the gas outlet 24 of the bottom of valve seat 6, the valve 4 being arranged at primary air inlet 1, the valve disc 8 and valve rod 9 being arranged on bonnet 14.
The front end of valve rod 9 connects valve 4 and the lower end of control-rod 5.Cylinder component includes cylinder body 28, the main oil inlet 15 being arranged on cylinder body 28
Control device 20 and the piston rod 21, piston 17 and the piston spring that are arranged in cylinder body 28 are closed with speed.The rear end of piston rod 21
Piston 17 is connected, cylinder body 28 is fixed on bonnet 14, and the front end of piston rod 21 is connected with the rear end of valve rod 9.Speed closes control device
20, which are provided with speed, closes oil inlet 19, and speed closes the side of close valve rod 9 that oil inlet 19 is located at piston 17 with piston rod 21, main oil inlet 15
It is located at the side of remote valve rod 9 of piston 17 with piston spring, bonnet 14 is provided with extra-air inlet 2, and extra-air inlet 2 is located at valve disc 8
Away from the side of valve 4.The front end of valve rod 9 is provided with globe journal 3, and valve 4 is provided with the hemispherical groove for coordinating globe journal 3, spherical
Axle journal 4 is covered tightly after loading hemispherical groove by blind flange 23, and the lower end of control-rod 5 is arranged on the outside of blind flange 23 and passes through a locking
Nut check.Bonnet 14 is connected with cylinder body 28 by a contiguous block 18, and speed is closed control device 20 and is arranged on contiguous block 18, connection
The oil circuit for coordinating speed to close control device 20 is provided with block 18, the first seal sleeve 10 is provided between contiguous block 18 and piston rod 21.
Capping 7 is provided with the connection end of valve seat 6 on bonnet 14, bushing is provided between capping 7 and valve rod 9, the middle part of bonnet 14 is provided with position-arresting disk
25, the second seal sleeve 30 is provided between position-arresting disk 25 and valve rod 9, valve disc 8 is between capping 7 and position-arresting disk 25.Valve disc 8 is logical
Cross 1 type hex nut 13 and adjusting screw 29 to lock with valve rod 9, soft graphite circle 12 is provided between position-arresting disk 25 and valve rod 9, it is soft
Property graphite circle 11 is compressed by clamp nut 12.The left side of position-arresting disk 25 is provided with the sleeve construction section for coordinating the second seal sleeve 30
26, the right side of position-arresting disk 25 is provided with the nut construction section 27 for coordinating clamp nut 11；Pass through a shaft coupling between piston rod 21 and valve rod 9
Device 22 connects, and shaft coupling 22 is between position-arresting disk 25 and contiguous block 23.The middle part of cylinder body 28 is provided with the spring for coordinating piston spring
Seat 16, piston spring include left outside coil spring 34, left coil spring 36 and left inside coil spring 38 positioned at the left side of spring base 16
And the coil spring 39 in the right cycle spring 35, right middle coil spring 37 and the right side on the right side of spring base 16.Bonnet 14 includes valve
Seat linkage section and contiguous block linkage section 43, position-arresting disk 25 is between valve seat linkage section and contiguous block linkage section 43, valve seat connection
Section includes inserting paragraph 40, construction section 41 and changeover portion 42, and extra-air inlet 2 is located on changeover portion 42.Extra-air inlet 2 is provided with unidirectional
Valve 32 and balance pipe, check valve 32 connect air inlet pipe 33 by pipe joint, and extra-air inlet 2 is obliquely installed, and the top of extra-air inlet 2
Provided with a plug 31, sealing ring is provided between plug 31 and extra-air inlet 2.
A kind of method of work of steam-extracting type speed pass non-return valve, 1）Speed closes non-return valve unlatching:When speed is closed non-return valve and not opened,
The oil that main oil inlet is come in, the right side of oil cylinder piston is in, auxiliary piston spring carries out closing speed pass check-valves, and steam is through steamer
Primary air inlet on the left of valve is passed into extraction steam pipe net horizontal direction after machine acting, while check valve of the steam through extra-air inlet enters
Enter on the right side of piston plate, valve is pressed on valve seat under piston spring closing forces and steam power effect, and draw gas pipe network steam quilt
Cut-out；
2）When steam turbine need to draw gas or during filling, quick closedown oil closes oil inlet by speed and enters oil cylinder to piston left side, with
The slow foundation of oil pressure, piston overpowers piston spring closing forces band ovable valve stem slowly move right, and valve is in left chamber therewith
Steam power effect under be opened, steam, which by gas outlet enters speed and closes the outlet of non-return valve, to draw gas in pipe network；
3）In speed closes non-return valve opening process or after closing, some steam is along valve rod and the second seal sleeve interior sealing
Gap between part leaks out；And the sealing surface of valve rod and the second seal sleeve is brought into close contact after fast non-return valve standard-sized sheet, valve
Bar leakage vapour is blocked；
4）Speed closes non-return valve closing：When filling or draw gas meets, speed closes the electromagnetism Vavle switching on control device, main oil inlet
Oil-feed, speed close oil inlet oil return, and speed closes check-valves in the presence of piston spring closing forces and oil pressure, closes valve rapidly, cut
Break into vapour.
Some flange-interfaces that the speed of the present invention closes non-return valve can be set according to the requirement of user by national standard, moral mark or American Standard
Meter；Also stroke signalling means can be configured in explosion-proof hazardous area or place of safety according to the requirement of user simultaneously, to determine oil cylinder operation
Extreme position.
The assembly and disassembly of cylinder component must to avoid personal injury accident by assembling-disassembling bolt and nut in the present invention.According to
Travel switch can be equipped with by needing speed to close non-return valve, for the closing in valve, the corresponding signal of fully open position transmission.It is fixed on valve rod
On valve disc also have following effect：Just in case when cylinder seal part damage speed pass oil leaks, it can stop that oil is sprayed onto high-temperature part；Resistance
Gear valve lever clearance leaks out steam to oil cylinder.
The points for attention that the speed of the present invention closes non-return valve are as follows：1. a speed, which closes non-return valve, to pacify in strict accordance with engineering drawing
Dress；2. after installation, any debris must not be left in valve body；3. each fixing screws should tighten, to prevent mechanism loosening or sealing surface
There is leakage phenomenon；4. before drawing gas, it is necessary to first confirm oil cylinder piston on top（I.e. valve rod rises to top）；5. cylinder efficient is oily
Pressure answers >=0.6Mpa work；6. the holding time：Dry environment 1 year, lake wet environment half a year, need to check and according to knot beyond the time limit
Fruit arranges to reprocess.
Speed in the present invention closes control device and closes control device for conventional speed, therefore does not state carefully.
Claims (10)
1. a kind of steam-extracting type speed closes non-return valve, it is characterised in that：It includes check-valves, cylinder component and the control being connected with each other
Bar, the check-valves include valve seat, be arranged on the primary air inlet of valve seat side, be arranged on valve seat opposite side bonnet, be arranged on
The gas outlet of seat bottom portion, the valve being arranged at primary air inlet, the valve disc and valve rod being arranged on bonnet, the valve rod front end
Valve and control-rod lower end are connected, the cylinder component includes cylinder body, the main oil inlet being arranged on cylinder body and speed and closes control dress
Piston rod, piston and the piston spring in cylinder body, the rear end connection piston of the piston rod are put and are arranged on, the cylinder body is consolidated
It is scheduled on bonnet, the front end of the piston rod and the rear end of valve rod connect, and the speed closes control device and closes oil inlet provided with speed,
The speed closes the close stem side that oil inlet is located at piston with piston rod, and the main oil inlet is located at the remote of piston with piston spring
From stem side, the bonnet is provided with extra-air inlet, and the extra-air inlet is located at the remote valve side of valve disc.
2. a kind of steam-extracting type speed according to claim 1 closes non-return valve, it is characterised in that：The valve rod front end is provided with spherical
Axle journal, the valve are provided with the hemispherical groove for coordinating globe journal, and the globe journal passes through after loading hemispherical groove
Blind flange covers tightly, and the control-rod lower end is arranged on the outside of blind flange and locked by a locking nut.
3. a kind of steam-extracting type speed according to claim 1 closes non-return valve, it is characterised in that：The bonnet passes through one with cylinder body
Contiguous block connects, and the speed is closed control device and is arranged on contiguous block, is provided with the contiguous block and coordinates speed to close control device
Oil circuit, the first seal sleeve is provided between the contiguous block and piston rod.
4. a kind of steam-extracting type speed according to claim 3 closes non-return valve, it is characterised in that：It is connected on the bonnet with valve seat
End is provided with capping, and bushing is provided between the capping and valve rod, position-arresting disk, the position-arresting disk and valve rod are provided with the middle part of the bonnet
Between be provided with the second seal sleeve, the valve disc is between capping and position-arresting disk.
5. a kind of steam-extracting type speed according to claim 4 closes non-return valve, it is characterised in that：The valve disc passes through 1 type hexagonal
Nut and adjusting screw are locked with valve rod, soft graphite circle are provided between the position-arresting disk and valve rod, the soft graphite circle leads to
Cross clamp nut compression.
6. a kind of steam-extracting type speed according to claim 5 closes non-return valve, it is characterised in that：It is provided with and matches somebody with somebody on the left of the position-arresting disk
The sleeve construction section of the second seal sleeve is closed, the nut construction section for coordinating clamp nut is provided with the right side of position-arresting disk；The piston rod
It is connected between valve rod by a shaft coupling, the shaft coupling is between position-arresting disk and contiguous block.
7. a kind of steam-extracting type speed according to claim 1 closes non-return valve, it is characterised in that：It is provided with and coordinates in the middle part of the cylinder body
The spring base of piston spring, the piston spring include left outside coil spring, left coil spring and the left side on the left of spring base
Coil spring in interior coil spring and right cycle spring on the right side of spring base, right middle coil spring and the right side.
8. a kind of steam-extracting type speed according to claim 3 closes non-return valve, it is characterised in that：The bonnet connects including valve seat
Section and contiguous block linkage section, the position-arresting disk is between valve seat linkage section and contiguous block linkage section, the valve seat linkage section bag
Inserting paragraph, construction section and changeover portion are included, the extra-air inlet is located on changeover portion.
9. a kind of steam-extracting type speed according to claim 8 closes non-return valve, it is characterised in that：The extra-air inlet is provided with single
To valve and balance pipe, the check valve connects air inlet pipe by pipe joint, and the extra-air inlet is obliquely installed, and extra-air inlet top
Portion is provided with a plug, and sealing ring is provided between the plug and extra-air inlet.
10. a kind of steam-extracting type speed as claimed in claim 1 closes the method for work of non-return valve, it is characterised in that：1）Speed closes check
Valve is opened:When speed is closed non-return valve and do not opened, oil that main oil inlet is come in, the right side of oil cylinder piston, auxiliary piston spring are in
Carry out closing speed pass check-valves, steam passes to main air inlet on the left of valve after steam turbine does work into extraction steam pipe net horizontal direction
Mouthful, while check valve of the steam through extra-air inlet enters on the right side of piston plate, valve acts in piston spring closing forces and steam power
Under be pressed on valve seat, the pipe network steam that draws gas is cut off；
2）When steam turbine need to draw gas or during filling, quick closedown oil closes oil inlet by speed and enters oil cylinder to piston left side, with
The slow foundation of oil pressure, piston overpowers piston spring closing forces band ovable valve stem slowly move right, and valve is in left chamber therewith
Steam power effect under be opened, steam, which by gas outlet enters speed and closes the outlet of non-return valve, to draw gas in pipe network；
3）In speed closes non-return valve opening process or after closing, some steam is along valve rod and the second seal sleeve interior sealing
Gap between part leaks out；And the sealing surface of valve rod and the second seal sleeve is brought into close contact after fast non-return valve standard-sized sheet, valve
Bar leakage vapour is blocked；
4）Speed closes non-return valve closing：When filling or draw gas meets, speed closes the electromagnetism Vavle switching on control device, main oil inlet
Oil-feed, speed close oil inlet oil return, and speed closes check-valves in the presence of piston spring closing forces and oil pressure, closes valve rapidly, cut
Break into vapour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711196854.1A CN107806522B (en) | 2017-11-25 | 2017-11-25 | Steam extraction type quick-closing check valve and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711196854.1A CN107806522B (en) | 2017-11-25 | 2017-11-25 | Steam extraction type quick-closing check valve and working method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107806522A true CN107806522A (en) | 2018-03-16 |
| CN107806522B CN107806522B (en) | 2020-07-31 |
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ID=61581828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711196854.1A Active CN107806522B (en) | 2017-11-25 | 2017-11-25 | Steam extraction type quick-closing check valve and working method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107806522B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11859724B2 (en) | 2019-03-27 | 2024-01-02 | Lontra Limited | Check valve |
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| CN202280482U (en) * | 2011-09-30 | 2012-06-20 | 浙江杰特优动力机械有限公司 | Quick closing valve for steam turbine |
| CN205013781U (en) * | 2015-10-08 | 2016-02-03 | 大丰市丰泰机电有限公司 | Voltage regulator of anti dirty fast reaction |
| CN207569283U (en) * | 2017-11-25 | 2018-07-03 | 浙江杰特优动力机械有限公司 | A kind of steam-extracting type speed closes non-return valve |
-
2017
- 2017-11-25 CN CN201711196854.1A patent/CN107806522B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7874310B1 (en) * | 2002-06-18 | 2011-01-25 | Jansen's Aircraft Systems Controls, Inc. | Water cooled liquid fuel valve |
| CN200946522Y (en) * | 2006-08-14 | 2007-09-12 | 黄云平 | Quick-close steam-extraction check valve |
| CN202280482U (en) * | 2011-09-30 | 2012-06-20 | 浙江杰特优动力机械有限公司 | Quick closing valve for steam turbine |
| CN205013781U (en) * | 2015-10-08 | 2016-02-03 | 大丰市丰泰机电有限公司 | Voltage regulator of anti dirty fast reaction |
| CN207569283U (en) * | 2017-11-25 | 2018-07-03 | 浙江杰特优动力机械有限公司 | A kind of steam-extracting type speed closes non-return valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11859724B2 (en) | 2019-03-27 | 2024-01-02 | Lontra Limited | Check valve |
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| CN107806522B (en) | 2020-07-31 |
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Address after: Jiaxing City, Zhejiang province 314511 Chongfu town Tongxiang city Hangzhou Road No. 308 Applicant after: Zhejiang jieteyou Power Machinery Co.,Ltd. Address before: Jiaxing City, Zhejiang province 314511 Chongfu town Tongxiang city Hangzhou Road No. 308 Applicant before: ZHEJIANG JIETEYOU POWER MACHINERY Co.,Ltd. |
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Denomination of invention: A steam extraction quick closing check valve and its working method Effective date of registration: 20210303 Granted publication date: 20200731 Pledgee: Bank of Hangzhou Limited by Share Ltd. Tongxiang branch Pledgor: Zhejiang jieteyou Power Machinery Co.,Ltd. Registration number: Y2021330000167 |
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Date of cancellation: 20220402 Granted publication date: 20200731 Pledgee: Bank of Hangzhou Limited by Share Ltd. Tongxiang branch Pledgor: Zhejiang jieteyou Power Machinery Co.,Ltd. Registration number: Y2021330000167 |
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Denomination of invention: A steam extraction type quick-closing check valve and its working method Effective date of registration: 20220822 Granted publication date: 20200731 Pledgee: Agricultural Bank of China Limited by Share Ltd. Tongxiang branch Pledgor: Zhejiang jieteyou Power Machinery Co.,Ltd. Registration number: Y2022980013196 |