CN105065738B - Adjustable flow pilot operated safety valve with induction tube - Google Patents
Adjustable flow pilot operated safety valve with induction tube Download PDFInfo
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- CN105065738B CN105065738B CN201510455034.4A CN201510455034A CN105065738B CN 105065738 B CN105065738 B CN 105065738B CN 201510455034 A CN201510455034 A CN 201510455034A CN 105065738 B CN105065738 B CN 105065738B
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- main valve
- valve
- flap
- pilot
- lid
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The present invention relates to a kind of adjustable flow pilot operated safety valve with induction tube, including main valve, pilot valve, pilot valve includes pilot valve body, guide valve seat, pilot valve valve, pilot stem, pilot valve lid and pressure setting device；Mainly pilot valve valve is made up of interior flap and outer flap, outer flap upper end periphery and the dynamic cooperation of pilot valve lid inner round wall, outer flap lower surface has the sealing surface cooperated with guide valve seat upper surface, there is radial direction boss at outer valve clack sealing surface, outer spring is installed between table top in the upper table surface and pilot valve lid of the radial direction boss；The external cylindrical surface of interior flap is installed in outer flap centre bore with dynamic cooperation；Pressure sensitive pipe is installed between main valve clack and interior flap.With low emission and maximum discharge two-stage discharge function, discharge sensitivity is good, discharge medium loss is few.
Description
Technical field
The invention belongs to valve field, especially with regard to a kind of pilot operated safety valve.
Background technology
Pilot operated safety valve is made up of main valve and pilot valve, and pilot valve import is connected by pipe with main valve inlet, pilot valve
One end outlet is connected by pipe with the plunger shaft of main valve, when main valve inlet lateral pressure is increased to presetting set-pressure value
When, pressure medium is delivered to pilot valve valve by pipe, and pilot valve is opened, the medium for main valve piston intracavitary of releasing, and main valve inlet is situated between
Matter pressure promotes main valve clack to open, and discharges pressure, and its shortcoming is：When main valve inlet side pressure medium is flown up, it is impossible to wink
Between pressure medium is delivered to pilot valve, discharge poor sensitivity；Pilot valve must drive main valve to open when opening, and dielectric loss is big；It is main
The Lift and blowdown of a safety valve of flap can not be adjusted.
The content of the invention
The purpose of the present invention is that the shortcoming existed for prior art is damaged there is provided one kind discharge sensitivity height, discharge medium
Consumption less, main valve clack Lift and the adjustable adjustable flow pilot operated safety valve with induction tube of flow.
Technical scheme includes main valve, pilot valve, and main valve includes main valve body, main valve seat, main valve clack, main valve lid and led
To set；Main valve seat is arranged in main valve body intake channel, and main valve clack has on the sealing surface cooperated, guide sleeve with main valve seat
End is fixedly mounted between main valve body upper surface and main valve lid lower surface, living between main valve clack external cylindrical surface and guide sleeve inner round wall
Plug structure coordinates, and plunger shaft is constituted between main valve clack, guide sleeve, main valve lid three, at the main valve clack back side and main valve lid lower surface
Between plunger shaft in spring is installed, connection plunger shaft and the spout hole of valve body import passage are formed with main valve clack；Pilot valve is installed
Covered in main valve, its structure includes pilot valve body, guide valve seat, pilot valve valve, pilot stem, pilot valve lid and pressure setting device, guide valve seat
Import connected with plunger shaft, the outlet of guide valve seat is connected with floss hole；Mainly pilot valve valve is made up of interior flap and outer flap,
Outer flap upper end periphery and pilot valve lid inner round wall are dynamic coordinates, and outer flap lower surface has and guide valve seat upper surface cooperates
There is radial direction boss at sealing surface, outer valve clack sealing surface, install outer between table top in the upper table surface and pilot valve lid of the radial direction boss
Spring；Outer flap is formed with centre bore, and interior flap is cylindrical structure, its external cylindrical surface and the dynamic cooperation of outer flap centre bore；Outer valve
Axially middle part circumferencial direction is uniformly formed with several radial holes to valve, and the radial hole connects outer flap centre bore and floss hole, outer valve
Extend in pipe on the downside of the outside flap lower surface of valve centre bore；Pressure sensitive pipe is installed between main valve clack and interior flap, should
Pressure sensitive pipe lower end periphery and main valve clack fixed seal connection, upper end periphery coordinate with pipe inner hole wall dynamic sealing, pressure
Power induction tube upper surface has the sealing surface cooperated with interior flap lower surface, and pressure sensitive tube hub is formed with connection main valve body
Main valve lid is fixedly installed in leading by radial direction orifice plate in the middle part of intake channel and the centre bore of interior flap lower surface, pressure sensitive pipe
Between valve seat；Outer flap center bore inner wall circumferencial direction on the outside of pressure sensitive pipe upper surface is formed with some axial circulation grooves,
The axial circulation groove is connected with the radial hole in the middle part of outer flap, pressure setting device be arranged on the interior flap back side and pilot valve lid it
Between.
Preferably, blowdown of a safety valve adjusting means is set between the main valve clack back side and main valve lid and height regulating device is opened, institute
State blowdown of a safety valve adjusting means adjusting rod and flow regulating orifices composition；The height regulating device of opening is by opening high stop collar and opening high gear
Post is constituted, and is opened high spacing set upper side and is covered by being threadably mounted at main valve, plunger shaft is stretched in lower end, opens high bumping post and be fixedly connected on
The main valve clack back side, its center is formed with connection main valve inlet and the flow regulating orifices of plunger shaft；Installed by screw thread adjusting rod upper end
High stop collar endoporus is being opened, lower end is extend into flow regulating orifices, opening high bumping post circumferencial direction and be formed with several connection flows tune
The radial hole of knothole and plunger shaft.
It is an advantage of the invention that pilot valve valve is constituted using interior flap and outer flap, interior flap cooperates with pressure sensitive pipe
Sealing pair is constituted, outer flap cooperates with guide valve seat and constitutes sealing pair, when valve body import channel media pressure is whole more than pressure
When determining the set-pressure value of device, valve body import pressure medium overcomes the spring force of pressure setting device by pressure sensitive pipe,
Push interior flap pressure release open, reduce main valve inlet pressure.If it is larger that main valve inlet lateral pressure raises the requirement discharge capacity to be formed, lead
The interior flap of valve opens pressure release and is not enough to reduce main valve inlet pressure, and main valve inlet side pressure medium continues to rise, and overcomes outer bullet
The elastic force of spring, opens outer flap, the medium in plunger shaft by pilot valve immediate leakage, main valve clack main valve inlet side medium to
Opened under the promotion of upper active force, main valve discharge reduces main valve inlet pressure, with low emission and maximum discharge two-stage discharge work(
Can, discharge sensitivity is good, discharge medium loss is few.In addition, setting blowdown of a safety valve to adjust between the main valve clack back side and main valve lid
Device and height regulating device is opened, make main valve clack Lift and flow adjustable.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
High stop collar, 7, bonnet, 8 springs, 9 pressures are opened in 1 main valve body, 2 main valve seats, 3 main valve clacks, 4 guide sleeves, 5 adjusting rods, 6
High bumping post, 11 guide valve seats, 12 pilot valve bodies, flap, 14 outer flaps, 15 outer springs, 16 pilot valve lids, 17 in 13 are opened in power induction tube, 10
Pilot stem, 18 pressure setting springs, 19 sealing caps, 20 pipes, 21 spout holes, 22 radial direction orifice plates, 23 flow regulating orifices.
Embodiment
Adjustable flow pilot operated safety valve with induction tube as shown in Figure 1, including main valve, pilot valve, main valve include main valve
Body 1, main valve seat 2, main valve clack 3, main valve lid 7 and guide sleeve 4；Main valve seat 2 be arranged on the intake channel of main valve body 1 in, main valve clack 3 with
Main valve seat 2 has the sealing surface cooperated, and the upper end of guide sleeve 4 is fixedly mounted on the upper surface of main valve body 1 and the lower surface of main valve lid 7
Between, piston structure coordinates between the external cylindrical surface of main valve clack 3 and the inner round wall of guide sleeve 4, i.e. the external cylindrical surface of main valve clack 3 and guide sleeve
Dynamic sealing coordinates between 4 inner round wall, plunger shaft is constituted between main valve clack 3, guide sleeve 4, the three of main valve lid 7, at the back side of main valve clack 3
Connection plunger shaft is formed with plunger shaft between the lower surface of main valve lid 7 on installation spring 8, main valve clack 3 with the import of main valve body 1 to lead to
The spout hole 21 in road；Pilot valve be arranged on main valve lid 7 on, its structure include pilot valve body 12, guide valve seat 11, pilot valve valve, pilot stem 17,
Pilot valve lid 16 and pressure setting device, the import of guide valve seat 11 are connected with plunger shaft, and the outlet of guide valve seat 11 is connected with floss hole,
Floss hole can be using pipeline and the outlet of main valve body 1；Pilot valve valve is made up of interior flap 13 and outer flap 14, on outer flap 14
Periphery and the dynamic cooperation of the inner round wall of pilot valve lid 16 are held, outer flap 14 is moved axially in pilot valve lid 16, under outer flap 14
End face, which has at the sealing surface cooperated with the upper surface of guide valve seat 11, the outer sealing surface of flap 14, has radial direction boss, and this is radially
Outer spring 15 is installed in the upper table surface and pilot valve lid 16 of boss between table top, the elastic force of the outer spring 15 compress outer flap 14 and
The sealing of guide valve seat 11 coordinates；Outer flap 14 is formed with centre bore, and interior flap 13 is cylindrical structure, its external cylindrical surface and outer flap 14
Centre bore is dynamic to be coordinated；Axially middle part circumferencial direction is uniformly formed with several radial holes to outer flap 14, and the radial hole connects outer flap
Extend in pipe 20 on the downside of 14 centre bores and floss hole, the outer outside lower surface of flap 14 of the centre bore of flap 14, i.e., outer flap 14
Lower surface center connecting circular tube 20, the centre bore of the pipe 20 is connected with the outer centre bore of flap 14, and with one heart, equal diameter；In master
Pressure sensitive pipe 9 is installed, the lower end periphery of pressure sensitive pipe 9 connects with the fixing seal of main valve clack 3 between flap 3 and interior flap 13
Connect, upper end periphery coordinates with the inner hole wall dynamic sealing of pipe 20, the upper surface of pressure sensitive pipe 9 has and the interior lower surface phase of flap 13
The sealing surface mutually coordinated, the center of pressure sensitive pipe 9 is formed with the connection intake channel of main valve body 1 and the center of the interior lower surface of flap 13
Hole, the middle part of pressure sensitive pipe 9 is fixedly installed between main valve lid 7 and guide valve seat 11 by radial direction orifice plate 22, the radial direction orifice plate 22
Disk medial plane is fitted between main valve lid 7 and guide valve seat 11, and disk inner side plane is formed with connection plunger shaft and guide valve seat 11
The opening of import；The center bore inner wall circumferencial direction of outer flap 14 on the outside of the upper surface of pressure sensitive pipe 9 is formed with some axial directions
Circulation groove, the axial circulation groove is connected with the radial hole at the outer middle part of flap 14, and pressure setting device is arranged on the interior back side of flap 13
Between pilot valve lid 16, when the import pressure medium of main valve body 1 exceedes the set-pressure value of pressure setting device, the interior quilt of flap 13
Medium, which is promoted, to be opened, the import medium of main valve body 1 by pressure sensitive pipe 9, the axial circulation groove of the center bore inner wall of outer flap 14, from
The radial hole at the outer middle part of flap 14 is released to floss hole.Pressure setting device by pressure setting spring 18, pilot stem 17, adjust spiral shell
Set composition, the lower end top pressure of pilot stem 17 is adjusted outside swivel nut in the interior upper surface center of flap 13, upper end through swivel nut centre bore is adjusted
Disc is by being threadably mounted on pilot valve lid 16, and lower end top pressure is in upper spring seat upper surface, and pressure setting spring 18, which is installed on, leads
Between upper lower spring cup on valve rod 17, installation sealing cap 19 is covered in the pilot valve for adjusting swivel nut and the upper end of pilot stem 17.If main
The requirement discharge capacity that the pressure rise of valve inlet side is formed is larger, and the interior flap 13 of pilot valve opens pressure release and is not enough to reduce main valve inlet
Pressure, main valve inlet side pressure medium continues to rise, and overcomes the elastic force of outer spring 15, opens outer flap 14, in plunger shaft
Medium is by pilot valve immediate leakage, and main valve clack 3 is opened under the promotion of the upward active force of main valve inlet side medium, main valve discharge.
Blowdown of a safety valve adjusting means is set between the back side of main valve clack 3 and main valve lid 7 and height regulating device, the keying is opened
Differential pressure adjusting device adjusting rod 5 and flow regulating orifices 23 are constituted；The height regulating device of opening is by opening high stop collar 6 and Kai Gao bumping posts
10 compositions, open the high upper end of stop collar 6 by being threadably mounted on main valve lid 7, plunger shaft is stretched in lower end, open high bumping post 10 and fix company
The back side of main valve clack 3 is connected on, its center is formed with connection main valve inlet and the flow regulating orifices 23 of plunger shaft；The upper end of adjusting rod 5 passes through
Be threadably mounted at out the high endoporus of stop collar 6, lower end is extend into flow regulating orifices 23, open the high circumferencial direction of bumping post 10 be formed with it is some
Individual connection flow regulating orifices 23 and the radial hole of plunger shaft, make the import medium of main valve body 1 enter plunger shaft from flow regulating orifices 23.
Open the high upper surface of bumping post 10 and opening the underface of the high lower surface of stop collar 6, by adjusting the high vertical direction position of stop collar 6, adjust
It is whole to open the high upper surface of bumping post 10 and open the distance between high lower surface of stop collar 6, reach the Lift of adjustment main valve clack 3.It is logical
The depth crossed in the position of the adjustment vertical direction of adjusting rod 5, the adjustment insertion flow regulating orifices 23 of adjusting rod 5, regulation main valve clack 3 times
The speed that medium enters in plunger shaft during position, reaches that the regulation seating velocity of main valve clack 3, i.e. blowdown of a safety valve are adjusted.The center of main valve clack 3
Place is formed with raised to the frustum of a cone in plunger shaft.
Claims (2)
1. a kind of adjustable flow pilot operated safety valve with induction tube, including main valve, pilot valve, main valve include main valve body (1), main valve
Seat (2), main valve clack (3), main valve lid (7) and guide sleeve (4)；Main valve seat (2) is arranged in main valve body (1) intake channel, main valve
Valve (3) and main valve seat (2) have a sealing surface cooperated, guide sleeve (4) upper end be fixedly mounted on main valve body (1) upper surface with
Between main valve lid (7) lower surface, piston structure coordinates between main valve clack (3) external cylindrical surface and guide sleeve (4) inner round wall, main valve clack
(3), constitute plunger shaft between guide sleeve (4), main valve lid (7) three, main valve clack (3) back side and main valve lid (7) lower surface it
Between plunger shaft in spring (8) is installed, connection plunger shaft and the spout hole of main valve body (1) intake channel are formed with main valve clack (3)
(21)；Pilot valve be arranged on main valve lid (7) on, its structure include pilot valve body (12), guide valve seat (11), pilot valve valve, pilot stem (17),
Pilot valve lid (16) and pressure setting device, the import of guide valve seat (11) are connected with plunger shaft, the outlet and discharge of guide valve seat (11)
Mouth connection；It is characterized in that pilot valve valve is made up of interior flap (13) and outer flap (14), outer flap (14) upper end periphery and pilot valve
The dynamic cooperation of (16) inner round wall is covered, outer flap (14) lower surface has the sealing surface cooperated with guide valve seat (11) upper surface, outside
There is radial direction boss at flap (14) sealing surface, outer bullet is installed between the upper table surface and pilot valve lid (16) interior table top of the radial direction boss
Spring (15)；Outer flap (14) is formed with centre bore, and interior flap (13) is cylindrical structure, its external cylindrical surface and outer flap (14) center
Hole is dynamic to be coordinated；Axially middle part circumferencial direction is uniformly formed with several radial holes to outer flap (14), and the radial hole connects outer flap
(14) extend in the pipe (20) on the downside of centre bore and floss hole, outer flap (14) centre bore outside flap (14) lower surface；
Pressure sensitive pipe (9), pressure sensitive pipe (9) the lower end periphery and main valve clack are installed between main valve clack (3) and interior flap (13)
(3) fixed seal connection, upper end periphery coordinates with pipe (20) inner hole wall dynamic sealing, and pressure sensitive pipe (9) upper surface has
The sealing surface cooperated with interior flap (13) lower surface, pressure sensitive pipe (9) center is formed with connection main valve body (1) intake channel
With the centre bore of interior flap (13) lower surface, pressure sensitive pipe (9) middle part is fixedly installed in main valve lid by radial direction orifice plate (22)
(7) between guide valve seat (11)；Outer flap (14) center bore inner wall circumferencial direction system on the outside of pressure sensitive pipe (9) upper surface
There are some axial circulation grooves, the axial circulation groove is connected with the radial hole in the middle part of outer flap (14), and pressure setting device is arranged on
Between interior flap (13) back side and pilot valve lid (16).
2. the adjustable flow pilot operated safety valve according to claim 1 with induction tube, it is characterized in that in main valve clack (3) back of the body
Blowdown of a safety valve adjusting means is set between face and main valve lid (7) and height regulating device is opened, the blowdown of a safety valve adjusting means regulation
Bar (5) and flow regulating orifices (23) composition；The height regulating device of opening is constituted by opening high stop collar (6) and opening high bumping post (10),
High stop collar (6) upper end is opened by being threadably mounted on main valve lid (7), plunger shaft is stretched in lower end, open the fixed company of high bumping post (10)
Main valve clack (3) back side is connected on, its center is formed with connection main valve inlet and the flow regulating orifices (23) of plunger shaft；On adjusting rod (5)
End is extend into flow regulating orifices (23) by being threadably mounted at out high stop collar (6) endoporus, lower end, opens high bumping post (10) circumference
Direction is formed with several connection flow regulating orifices (23) and the radial hole of plunger shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510455034.4A CN105065738B (en) | 2015-07-17 | 2015-07-17 | Adjustable flow pilot operated safety valve with induction tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510455034.4A CN105065738B (en) | 2015-07-17 | 2015-07-17 | Adjustable flow pilot operated safety valve with induction tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105065738A CN105065738A (en) | 2015-11-18 |
| CN105065738B true CN105065738B (en) | 2017-08-04 |
Family
ID=54495188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510455034.4A Active CN105065738B (en) | 2015-07-17 | 2015-07-17 | Adjustable flow pilot operated safety valve with induction tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105065738B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864496B (en) * | 2016-05-27 | 2018-01-30 | 永一阀门集团有限公司 | Backpressure regulation pilot operated safety valve |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2427692Y (en) * | 2000-05-27 | 2001-04-25 | 乐山市长江仪表厂 | Piston damping guiding type safety valve |
| CN201687999U (en) * | 2010-05-28 | 2010-12-29 | 徐文娴 | Pilot operated safety valve |
| CN201753791U (en) * | 2010-07-30 | 2011-03-02 | 徐文娴 | Heavy-caliber pilot operated safety valve |
| US8967180B2 (en) * | 2011-05-17 | 2015-03-03 | Koganei Corporation | Pilot type pressure regulator |
| CN202188182U (en) * | 2011-08-17 | 2012-04-11 | 永一阀门集团有限公司 | Air-exhaust safety valve |
| CN203297700U (en) * | 2013-06-09 | 2013-11-20 | 张家港沙洲船用阀门制造有限公司 | Pilot operated safety valve |
| CN204127415U (en) * | 2014-09-10 | 2015-01-28 | 天正阀门有限公司 | High-temperature pilot-operated type safety valve |
-
2015
- 2015-07-17 CN CN201510455034.4A patent/CN105065738B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105065738A (en) | 2015-11-18 |
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