CN207569283U - A kind of steam-extracting type speed closes non-return valve - Google Patents
A kind of steam-extracting type speed closes non-return valve Download PDFInfo
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- CN207569283U CN207569283U CN201721595001.0U CN201721595001U CN207569283U CN 207569283 U CN207569283 U CN 207569283U CN 201721595001 U CN201721595001 U CN 201721595001U CN 207569283 U CN207569283 U CN 207569283U
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- valve
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- air inlet
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Abstract
The utility model 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, valve deck, 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 valve deck, the front end of piston rod and the rear end of valve rod connect, speed closes control device and is equipped 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 separate stem side of piston with piston spring, valve deck is equipped with extra-air inlet, extra-air inlet is located at the separate valve side of valve disc.The utility model 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 utility model is related to a kind of valves more particularly to a kind of steam-extracting type speed to close non-return valve.
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, it can not accomplish balance of steam, it is inadequate to use stability
Height can not ensure that non-return valve can be closed rapidly and thoroughly.
Utility model content
For the utility model in order to solve above-mentioned defect in the prior art and deficiency, speed can be accomplished by providing one kind
Pass is integrated with check, and compact-sized, price is low, and can accomplish balance of steam, and stability in use is good, ensures to close and quickly may be used
Non-return valve is closed by the steam-extracting type speed of property.
The technical solution of the utility model：A kind of steam-extracting type speed closes non-return valve, the check-valves including interconnection, oil cylinder group
Part and control-rod, the check-valves include valve seat, the primary air inlet for being arranged on valve seat side, the valve for being arranged on valve seat opposite side
Cover, 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 valve deck, institute
State valve rod front end connection valve and control-rod lower end, the cylinder component include cylinder body, the main oil inlet being arranged on cylinder body and
Speed closes control device and the piston rod, piston and the piston spring that are arranged in cylinder body, and the rear end of the piston rod connects piston,
The cylinder body is fixed on valve deck, and the front end of the piston rod and the rear end of valve rod connect, and the speed is closed control device and is equipped with
Speed closes oil inlet, and the speed closes the close stem side that oil inlet is located at piston with piston rod, the main oil inlet and piston spring
Positioned at the separate stem side of piston, the valve deck is equipped with extra-air inlet, and the extra-air inlet is located at the separate valve side of valve disc.
The utility model using speed close control device cooperation cylinder component driving non-return valve valve rod action open valve and
Quick closedown valve can accomplish that speed pass is integrated with check, and compact-sized, price is low, and can accomplish balance of steam, uses
Stability is good, ensures that valve closes fast reliability, and interchangeability is strong, utilization rate is high.
Preferably, the valve rod front end is equipped with globe journal, and the hemispherical that the valve is equipped with cooperation globe journal is recessed
Slot, the globe journal are covered tightly after being packed into hemispherical groove by blind flange, and the control-rod lower end is mounted on the outside of blind flange
It is 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 valve deck is connect with cylinder body by a link block, and the speed is closed control device and is mounted on link block,
The oil circuit that cooperation speed closes control device is equipped in the link block, the first sealing shroud is equipped between the link block and piston rod
Cylinder.
This kind of structure facilitates the installation and action of speed pass control device, it is ensured that the degree of firmly installing of cylinder component, so as to really
The leakproofness of keep-alive stopper rod and link block.
Preferably, capping is equipped on the valve deck with valve seat connecting pin, bushing is equipped between the capping and valve rod, it is described
Position-arresting disk is equipped in the middle part of valve deck, the second seal sleeve is equipped between the position-arresting disk and valve rod, the valve disc is located 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 be hindered
Gear oil is sprayed onto high-temperature part；Blocking 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 equipped with soft graphite circle, the soft graphite circle 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 leakproofness and position-arresting disk and valve rod
Leakproofness.
Preferably, the sleeve construction section of the second seal sleeve of cooperation is equipped on the left of the position-arresting disk, is equipped on the right side of position-arresting disk
Coordinate the nut construction section of clamp nut；It is connected between the piston rod and valve rod by a shaft coupling, the shaft coupling is located at
Between position-arresting disk and link block.
This kind of structure further ensures that the connection between the degree of being connected firmly of position-arresting disk and valve deck and valve rod and piston rod
Firmness.
Preferably, the spring base of cooperation piston spring is equipped in 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 intermediate coil spring and the right side.
This kind of structure ensures the degree of firmly installing and action stability of piston spring.
Preferably, the valve deck includes valve seat linkage section and link block linkage section, and the position-arresting disk is located at valve seat linkage section
Between link block linkage section, the valve seat linkage section includes inserting paragraph, construction section and changeover portion, and the extra-air inlet was located at
It crosses in section.
This kind of structure ensures the degree of being connected firmly between valve deck and valve seat and oil cylinder.
Preferably, the extra-air inlet is equipped with check valve and balance pipe, and the check valve connects air inlet by pipe fitting
Pipe, the extra-air inlet are obliquely installed, and a plug is equipped at the top of extra-air inlet, are equipped between the plug and extra-air inlet close
Seal.
Steam is reached by balance pipe at piston during unlatching, reaches balance with outside, reduction opening force, and when closing passes through list
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 is not opened,
The oil that main oil inlet is come in is in the right side of oil cylinder piston, and auxiliary piston spring carries out closing speed pass check-valves, and steam is through steamer
Machine acting after enter extraction steam pipe net horizontal direction pass to valve left side primary air inlet, while check valve of the steam through extra-air inlet into
Enter on the right side of piston plate, valve is pressed under piston spring closing forces and steam power effect on valve seat, steam extraction pipe network steam quilt
Cut-out；
2）When steam turbine needs steam extraction or filling, quick closedown oil closes oil inlet by speed and enters on the left of oil cylinder to piston,
With the slow foundation of oil pressure, piston overpowers piston spring closing forces band ovable valve stem slowly moves right, and valve is in left side therewith
It is opened under the steam power effect of chamber, steam is entered by gas outlet in the outlet steam extraction pipe network that speed closes non-return valve；
3）In speed closes non-return valve opening process or after closing, some steam is along in valve rod and the second seal sleeve
Gap between sealing element leaks out；And the sealing surface of valve rod and the second seal sleeve closely pastes after fast non-return valve standard-sized sheet
It closes, valve stem leakoff is blocked；
4）Speed closes non-return valve closing：When filling or steam extraction meet, speed closes the electromagnetism Vavle switching on control device, it is main into
Hydraulic fluid port oil inlet, speed close oil inlet oil return, and speed closes check-valves under the action of piston spring closing forces and oil pressure, closes valve rapidly
Door, cuts off into vapour.
The utility model using speed close control device cooperation cylinder component driving non-return valve valve rod action open valve and
Quick closedown valve can accomplish that speed pass is integrated with check, and compact-sized, price is low, and can accomplish balance of steam, uses
Stability is good, ensures to close fast reliability.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the schematic side view of the utility model；
Fig. 3 is the structure diagram of cylinder interior in the utility model；
Fig. 4 is the structure diagram of valve deck in the utility model；
1. primary air inlet in figure, 2. extra-air inlets, 3. globe journals, 4. valve, 5. control-rods, 6. valve seats, 7. cappings, 8.
Valve disc, 9. valve rods, 10. first seal sleeves, 11. clamp nuts, 12. soft graphite circles, 13.1 font hex nuts, 14. valves
Lid, 15. main oil inlets, 16. spring bases, 17. pistons, 18. link blocks, 19. speed pass oil inlets, 20. speed pass control devices, 21.
Piston rod, 22. shaft couplings, 23. blind flanges, 24. gas outlets, 25. position-arresting disks, 26. sleeve construction sections, 27. nut construction sections,
28. cylinder body, 29. adjusting screws, 30. second seal sleeves, 31. plugs, 32. check valves, 33. air inlet pipe, 34. left outside circle bullets
Spring, 35. right cycle springs, 36. left coil springs, 37. right intermediate coil springs, 38. left inside coil springs, coil spring in 39. right sides,
40. inserting paragraph, 41. construction sections, 42. changeover portions, 43. link block linkage sections.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings, but is not that model is protected to the utility model
The limitation enclosed.
As shown in Figs 1-4, a kind of steam-extracting type speed closes non-return valve, check-valves, cylinder component and control including interconnection
Bar 5.Check-valves includes valve seat 6, the primary air inlet 1 for being arranged on 6 side of valve seat, the valve deck 14 for being arranged on 6 opposite side of valve seat, setting
In the gas outlet 24 of 6 bottom of valve seat, the valve 4 being arranged at primary air inlet 1, the valve disc 8 being arranged on valve deck 14 and valve rod 9.
9 front end of valve rod, 5 lower end of connection valve 4 and control-rod.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 valve deck 14, and the front end of piston rod 21 is connect with the rear end of valve rod 9.Speed closes control device
20, which are equipped with speed, closes oil inlet 19, and speed closes 9 side of close valve rod that oil inlet 19 is located at piston 17 with piston rod 21, main oil inlet 15
It is located at 9 side of separate valve rod of piston 17 with piston spring, valve deck 14 is equipped with extra-air inlet 2, and extra-air inlet 2 is located at valve disc 8
Far from 4 side of valve.9 front end of valve rod is equipped with globe journal 3, and valve 4 is equipped with the hemispherical groove of cooperation globe journal 3, spherical
Axle journal 4 is covered tightly after being packed into hemispherical groove by blind flange 23, and 5 lower end of control-rod is mounted on 23 outside of blind flange and passes through a locking
Nut check.Valve deck 14 is connect with cylinder body 28 by a link block 18, and speed is closed control device 20 and is mounted on link block 18, connection
The oil circuit that cooperation speed closes control device 20 is equipped in block 18, the first seal sleeve 10 is equipped between link block 18 and piston rod 21.
Capping 7 is equipped with 6 connecting pin of valve seat on valve deck 14, bushing is equipped between capping 7 and valve rod 9,14 middle part of valve deck is equipped with position-arresting disk
25, the second seal sleeve 30 is equipped between position-arresting disk 25 and valve rod 9, valve disc 8 is located between capping 7 and position-arresting disk 25.Valve disc 8 is logical
It crosses 1 type hex nut 13 and adjusting screw 29 to lock with valve rod 9, soft graphite circle 12 is equipped between position-arresting disk 25 and valve rod 9, it is soft
Property graphite circle 11 is compressed by clamp nut 12.25 left side of position-arresting disk is equipped with the sleeve construction section of the second seal sleeve 30 of cooperation
26,25 right side of position-arresting disk is equipped with the nut construction section 27 of cooperation 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 link block 23.28 middle part of cylinder body is equipped with the spring of cooperation piston spring
Seat 16, piston spring include the left outside coil spring 34, left coil spring 36 and the left inside coil spring 38 that are located at 16 left side of spring base
And the coil spring 39 in the right cycle spring 35, right intermediate coil spring 37 and the right side on 16 right side of spring base.Valve deck 14 includes valve
Seat linkage section and link block linkage section 43, position-arresting disk 25 is between valve seat linkage section and link 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 equipped with unidirectional
Valve 32 and balance pipe, check valve 32 connect air inlet pipe 33 by pipe fitting, and extra-air inlet 2 is obliquely installed, and 2 top of extra-air inlet
Equipped with a plug 31, sealing ring is equipped 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 is not opened,
The oil that main oil inlet is come in is in the right side of oil cylinder piston, and auxiliary piston spring carries out closing speed pass check-valves, and steam is through steamer
Machine acting after enter extraction steam pipe net horizontal direction pass to valve left side primary air inlet, while check valve of the steam through extra-air inlet into
Enter on the right side of piston plate, valve is pressed under piston spring closing forces and steam power effect on valve seat, steam extraction pipe network steam quilt
Cut-out；
2）When steam turbine needs steam extraction or filling, quick closedown oil closes oil inlet by speed and enters on the left of oil cylinder to piston,
With the slow foundation of oil pressure, piston overpowers piston spring closing forces band ovable valve stem slowly moves right, and valve is in left side therewith
It is opened under the steam power effect of chamber, steam is entered by gas outlet in the outlet steam extraction pipe network that speed closes non-return valve；
3）In speed closes non-return valve opening process or after closing, some steam is along in valve rod and the second seal sleeve
Gap between sealing element leaks out；And the sealing surface of valve rod and the second seal sleeve closely pastes after fast non-return valve standard-sized sheet
It closes, valve stem leakoff is blocked；
4）Speed closes non-return valve closing：When filling or steam extraction meet, speed closes the electromagnetism Vavle switching on control device, it is main into
Hydraulic fluid port oil inlet, speed close oil inlet oil return, and speed closes check-valves under the action of piston spring closing forces and oil pressure, closes valve rapidly
Door, cuts off into vapour.
Some flange-interfaces that the speed of the utility model closes non-return valve can acording to the requirement of user, by national standard, moral mark or U.S.
Mark design；It can also be transported simultaneously acording to the requirement of user in explosion-proof hazardous area or place of safety configuration stroke signalling means with determining oil cylinder
Capable extreme position.
The assembly and disassembly of cylinder component must to avoid personal injury accident by assembling-disassembling bolt and nut in the utility model.
Speed, which closes non-return valve, as needed can be equipped with travel switch, for sending corresponding signal in the closing of valve, fully open position.It is fixed on
Valve disc on valve rod also has following effect：Just in case when cylinder seal part damage speed pass oil leaks, it can stop that oil is sprayed onto high-temperature portion
Point；Blocking valve lever clearance leaks out steam to oil cylinder.
The points for attention that the speed of the utility model closes non-return valve are as follows：1. speed closes non-return valve must be in strict accordance with engineering
Figure installation；It 2. must not there are any sundries after installation, in valve body；3. each fixing screws should tighten, loosened to prevent mechanism or close
There is leakage phenomenon in cover；4. before steam extraction, it is necessary to first confirm oil cylinder piston on top（I.e. valve rod rises to top）；5. oil cylinder work
Make oil pressure and answer >=0.6Mpa work；6. the holding time：Dry environment 1 year, lake wet environment half a year need to check simultaneously root beyond the time limit
It is reprocessed according to result arrangement.
Speed in the utility model closes control device and closes control device for conventional speed, therefore does not state carefully.
Claims (9)
1. a kind of steam-extracting type speed closes non-return valve, it is characterised in that：It includes the check-valves, cylinder component and the control that are connected with each other
Bar, the check-valves include valve seat, be arranged on valve seat side primary air inlet, be arranged on valve seat opposite side valve deck, 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 valve deck, 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 being scheduled on valve deck, 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 equipped 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 valve deck is equipped with extra-air inlet, and the extra-air inlet is located at the separate 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 equipped with spherical shape
Axle journal, the valve are equipped with the hemispherical groove of cooperation globe journal, and the globe journal passes through after being packed into hemispherical groove
Blind flange covers tightly, and the control-rod lower end is mounted on the outside of blind flange and is 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 valve deck passes through one with cylinder body
Link block connects, and the speed is closed control device and is mounted on link block, and cooperation speed is equipped in the link block and closes control device
Oil circuit is equipped with the first seal sleeve between the link 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 connect on the valve deck with valve seat
End is equipped with capping, and bushing is equipped between the capping and valve rod, position-arresting disk, the position-arresting disk and valve rod are equipped in the middle part of the valve deck
Between be equipped with the second seal sleeve, the valve disc be located at capping position-arresting disk between.
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 equipped 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 equipped with and matches on the left of the position-arresting disk
The sleeve construction section of the second seal sleeve is closed, the nut construction section of cooperation clamp nut is equipped on the right side of position-arresting disk；The piston rod
It is connect between valve rod by a shaft coupling, the shaft coupling is between position-arresting disk and link block.
7. a kind of steam-extracting type speed according to claim 1 closes non-return valve, it is characterised in that：Cooperation is equipped in the middle part of the cylinder body
The spring base of piston spring, the piston spring include being located at 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 intermediate coil spring and the right side.
8. a kind of steam-extracting type speed according to claim 4 closes non-return valve, it is characterised in that：The valve deck is connected including valve seat
Section and link block linkage section, the position-arresting disk is between valve seat linkage section and link block linkage section, the valve seat linkage section packet
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 equipped with single
To valve and balance pipe, the check valve connects air inlet pipe by pipe fitting, and the extra-air inlet is obliquely installed, and extra-air inlet top
Portion is equipped with a plug, and sealing ring is equipped between the plug and extra-air inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721595001.0U CN207569283U (en) | 2017-11-25 | 2017-11-25 | A kind of steam-extracting type speed closes non-return valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721595001.0U CN207569283U (en) | 2017-11-25 | 2017-11-25 | A kind of steam-extracting type speed closes non-return valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207569283U true CN207569283U (en) | 2018-07-03 |
Family
ID=62692036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721595001.0U Active CN207569283U (en) | 2017-11-25 | 2017-11-25 | A kind of steam-extracting type speed closes non-return valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207569283U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806522A (en) * | 2017-11-25 | 2018-03-16 | 浙江杰特优动力机械有限公司 | A kind of steam-extracting type speed closes non-return valve and its method of work |
-
2017
- 2017-11-25 CN CN201721595001.0U patent/CN207569283U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107806522A (en) * | 2017-11-25 | 2018-03-16 | 浙江杰特优动力机械有限公司 | A kind of steam-extracting type speed closes non-return valve and its method of work |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Jiaxing City, Zhejiang province 314511 Chongfu town Tongxiang city Hangzhou Road No. 308 Patentee after: Zhejiang jieteyou Power Machinery Co., Ltd Address before: Jiaxing City, Zhejiang province 314511 Chongfu town Tongxiang city Hangzhou Road No. 308 Patentee before: Zhejiang Jieteyou Power Machinery Co., Ltd. |