CN105065738A - Adjustable-flow pilot-operated type safety valve with induction tube - Google Patents
Adjustable-flow pilot-operated type safety valve with induction tube Download PDFInfo
- Publication number
- CN105065738A CN105065738A CN201510455034.4A CN201510455034A CN105065738A CN 105065738 A CN105065738 A CN 105065738A CN 201510455034 A CN201510455034 A CN 201510455034A CN 105065738 A CN105065738 A CN 105065738A
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- Prior art keywords
- main valve
- valve
- pilot
- guide
- flap
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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 invention relates to an adjustable-flow pilot-operated type safety valve with an induction tube. The adjustable-flow pilot-operated type safety valve comprises a main valve and a guide valve. The guide valve comprises a guide valve body, a guide valve seat, guide valve discs, a guide valve rod, a guide valve cover and a pressure setting device. The guide valve discs are composed of an inner valve disc and an outer valve disc. The outer peripheral face of the upper end of the outer valve disc is matched with the inner peripheral wall of the guide valve cover in a dynamic manner. The lower end face of the outer valve disc is provided with a sealing face matched with the upper end face of the guide valve seat. The sealing face of the outer valve disc is provided with a radial boss. An outer spring is arranged between the upper boss face of the radial boss and an inner boss face of the guide valve cover. The outer cylindrical face of the inner valve disc is arranged in a center hole of the outer valve disc in a dynamic fit manner. A pressure induction tube is arranged between a main valve disc and the inner valve disc. The adjustable-flow pilot-operated type safety valve has two-stage discharging functions of low discharging and high discharging, the discharging sensitivity is good, and the loss of discharging media is less.
Description
Technical field
The invention belongs to valve field, particularly about a kind of Pilot operated safety valve.
Background technique
Pilot operated safety valve is made up of main valve and pilot valve, pilot valve import is communicated with main valve inlet by pipe, one end outlet of pilot valve is communicated with the piston cavity of main valve by pipe, when main valve inlet side pressure is elevated to presetting Set pressure value, pressure medium is delivered to pilot valve lobe by pipe, pilot valve is opened, the medium of releasing in main valve piston chamber, main valve inlet pressure medium promotes main valve clack and opens, discharge pressure, its shortcoming is: when main valve inlet side pressure medium rises suddenly, instantaneously pressure medium can not be delivered to pilot valve, discharge poor sensitivity; Pilot valve must drive main valve to open when opening, and relative permitivity is large; The Lift of main valve clack and Blowdown of a safety valve can not regulate.
Summary of the invention
The object of the invention is the shortcoming existed for prior art, provide a kind of discharge highly sensitive, discharge medium loss is few, the adjustable flow Pilot operated safety valve of main valve clack Lift and the adjustable band induction tube of flow.
Technological scheme of the present invention comprises main valve, pilot valve, and main valve comprises main valve body, main valve seat, main valve clack, main valve lid and guide sleeve; Main valve seat is arranged in main valve body inlet passage, main valve clack and main valve seat have the sealing surface cooperatively interacted, guide sleeve upper end is fixedly mounted between main valve body upper-end surface and main valve lid lower end surface, between main valve clack external cylindrical surface with guide sleeve inner round wall, piston structure coordinates, piston cavity is formed between main valve clack, guide sleeve, main valve lid three, mounting spring in piston cavity between the main valve clack back side and main valve lid lower end surface, main valve clack is shaped with the overflow hole being communicated with piston cavity and valve body inlet passage; Pilot valve is arranged on main valve and covers, and its structure comprises pilot valve body, guide valve seat, pilot valve lobe, pilot stem, pilot valve lid and pressure setting device, and the import of guide valve seat is communicated with piston cavity, and the outlet of guide valve seat is communicated with floss hole; Mainly pilot valve lobe is made up of interior flap and outer flap, outer flap upper end periphery coordinates with pilot valve lid inner round wall is dynamic, outer flap lower end surface has the sealing surface cooperatively interacted with guide valve seat upper-end surface, outer valve clack sealing surface place has radial boss, installs outer spring in the upper table surface of this radial boss and pilot valve lid between table top; Outer flap is shaped with center hole, and interior flap is cylindrical structure, and its external cylindrical surface coordinates with outer flap center hole is dynamic; Outer flap shaft is evenly shaped with several radial holes to middle part circumferencial direction, and this radial hole is communicated with outer flap center hole and floss hole, extends in the pipe on the downside of the outside flap lower end surface of outer flap center hole; Setting pressure induction tube between main valve clack and interior flap, this pressure sensitive pipe lower end periphery and main valve clack fixed seal connection, upper end periphery coordinates with the motive sealing of pipe inner hole wall, pressure sensitive pipe upper-end surface has the sealing surface cooperatively interacted with interior flap lower end surface, pressure sensitive tube hub is shaped with the center hole being communicated with main valve body inlet passage and interior flap lower end surface, is fixedly installed between main valve lid and guide valve seat in the middle part of pressure sensitive pipe by radial orifice plate; Outer flap center bore inner wall circumferencial direction outside pressure sensitive pipe upper-end surface is shaped with some axial flow grooves, and this axial flow groove is communicated with the radial hole in the middle part of outer flap, and pressure setting device is arranged between the interior flap back side and pilot valve lid.
Preferably, Blowdown of a safety valve controlling device is set between the main valve clack back side and main valve lid and opens height regulating device, described Blowdown of a safety valve controlling device adjustable lever and flow regulating orifices composition; Described height regulating device of opening is by opening high stop collar and Kai Gao bumping post forms, open high stop collar upper end to be arranged on main valve by screw thread and to cover, piston cavity is stretched in lower end, opens high bumping post and is fixedly connected on the main valve clack back side, and its center is shaped with the flow regulating orifices being communicated with main valve inlet and piston cavity; Adjustable lever upper end is arranged on out high stop collar endoporus by screw thread, and lower end extend in flow regulating orifices, opens high bumping post circumferencial direction and is shaped with several radial holes being communicated with flow regulating orifices and piston cavity.
Advantage of the present invention is flap and outer flap composition in pilot valve lobe adopts, interior flap and pressure sensitive pipe cooperatively interact composition sealing pair, outer flap and guide valve seat cooperatively interact composition sealing pair, when the Set pressure value of valve body inlet passage pressure medium Overpressure of a safety valve setting 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 side pressure raises the requirement discharge amount formed, the interior flap of pilot valve is opened pressure release and is not enough to reduce main valve inlet pressure, main valve inlet side pressure medium continues to rise, overcome the elastic force of outer spring, outer flap is opened, medium in piston cavity is by pilot valve immediate leakage, main valve clack is opened under the promotion of main valve inlet side medium upwards active force, main valve discharges, reduce main valve inlet pressure, have low emission and maximum discharge two-stage discharge function, discharge sensitivity is good, discharge medium loss is few.In addition, Blowdown of a safety valve controlling device and open height regulating device is set between the main valve clack back side and main valve lid, make main valve clack Lift and flow adjustable.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
1 main valve body, 2 main valve seats, 3 main valve clacks, 4 guide sleeves, 5 adjustable levers, 6 open high stop collar, 7, valve gap, 8 springs, 9 pressure sensitive pipes, 10 open flap, 14 outer flaps, 15 outer springs, 16 pilot valve lids, 17 pilot stems, 18 pressure setting springs, 19 sealing caps, 20 pipes, 21 overflow holes, 22 radial orifice plates, 23 flow regulating orifices in high bumping post, 11 guide valve seats, 12 pilot valve bodies, 13.
Embodiment
The adjustable flow Pilot operated safety valve of band induction tube as shown in Figure 1, comprises main valve, pilot valve, and main valve comprises 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 inlet passage, main valve clack 3 and main valve seat 2 have the sealing surface cooperatively interacted, guide sleeve 4 upper end is fixedly mounted between main valve body 1 upper-end surface and main valve lid 7 lower end surface, between main valve clack 3 external cylindrical surface with guide sleeve 4 inner round wall, piston structure coordinates, namely between main valve clack 3 external cylindrical surface with guide sleeve 4 inner round wall, motive sealing coordinates, main valve clack 3, guide sleeve 4, piston cavity is formed between main valve lid 7 three, mounting spring 8 in piston cavity between main valve clack 3 back side and main valve lid 7 lower end surface, main valve clack 3 is shaped with the overflow hole 21 being communicated with piston cavity and main valve body 1 inlet passage, pilot valve is arranged on main valve lid 7, its structure comprises pilot valve body 12, guide valve seat 11, pilot valve lobe, pilot stem 17, pilot valve lid 16 and pressure setting device, the import of guide valve seat 11 is communicated with piston cavity, the outlet of guide valve seat 11 is communicated with floss hole, and floss hole can adopt pipeline and main valve body 1 outlet, pilot valve lobe is made up of interior flap 13 and outer flap 14, outer flap 14 upper end periphery coordinates with pilot valve lid 16 inner round wall is dynamic, outer flap 14 can be moved axially in pilot valve lid 16, outer flap 14 lower end surface has the sealing surface cooperatively interacted with guide valve seat 11 upper-end surface, outer flap 14 sealing surface place has radial boss, install outer spring 15 between table top in the upper table surface of this radial boss and pilot valve lid 16, the elastic force of this outer spring 15 compresses outer flap 14 and guide valve seat 11 is sealed and matched, outer flap 14 is shaped with center hole, and interior flap 13 is cylindrical structure, and its external cylindrical surface coordinates with outer flap 14 center hole is dynamic, outer flap 14 axially middle part circumferencial direction is evenly shaped with several radial holes, this radial hole is communicated with outer flap 14 center hole and floss hole, extend in pipe 20 on the downside of outer flap 14 center hole outside flap 14 lower end surface, i.e. center, outer flap 14 lower end surface connecting circular tube 20, the center hole of this pipe 20 is communicated with outer flap 14 center hole, and with one heart, equal diameter, setting pressure induction tube 9 between main valve clack 3 and interior flap 13, this pressure sensitive pipe 9 lower end periphery and main valve clack 3 fixed seal connection, upper end periphery coordinates with the motive sealing of pipe 20 inner hole wall, pressure sensitive pipe 9 upper-end surface has the sealing surface cooperatively interacted with interior flap 13 lower end surface, pressure sensitive pipe 9 center is shaped with the center hole being communicated with main valve body 1 inlet passage and interior flap 13 lower end surface, be fixedly installed between main valve lid 7 and guide valve seat 11 by radial orifice plate 22 in the middle part of pressure sensitive pipe 9, this radial orifice plate 22 disk medial plane is fitted between main valve lid 7 and guide valve seat 11, disk inner side plane is shaped with the opening being communicated with piston cavity and guide valve seat 11 import, outer flap 14 center bore inner wall circumferencial direction outside pressure sensitive pipe 9 upper-end surface is shaped with some axial flow grooves, this axial flow groove is communicated with the radial hole in the middle part of outer flap 14, pressure setting device is arranged between interior flap 13 back side and pilot valve lid 16, when the Set pressure value of main valve body 1 import pressure medium Overpressure of a safety valve setting device, interior flap 13 is promoted to open by medium, main valve body 1 import medium is by the axial flow groove of pressure sensitive pipe 9, outer flap 14 center bore inner wall, and the radial hole in the middle part of outer flap 14 is released floss hole.Pressure setting device is made up of pressure setting spring 18, pilot stem 17, swivel nut of adjusting, top, pilot stem 17 lower end is pressed in center, interior flap 13 upper-end surface, upper end is through swivel nut center hole of adjusting, swivel nut periphery of adjusting is arranged on pilot valve lid 16 by screw thread, top, lower end is pressed in upper spring seat upper-end surface, pressure setting spring 18 is installed between the upper lower spring cup on pilot stem 17, covers install sealing cap 19 at the pilot valve of adjust swivel nut and pilot stem 17 upper end.If it is larger that main valve inlet side pressure raises the requirement discharge amount formed, the interior flap 13 of pilot valve is opened pressure release and is not enough to reduce main valve inlet pressure, main valve inlet side pressure medium continues to rise, overcome the elastic force of outer spring 15, outer flap 14 is opened, medium in piston cavity is by pilot valve immediate leakage, and main valve clack 3 is opened under the promotion of main valve inlet side medium upwards active force, and main valve discharges.
Between main valve clack 3 back side and main valve lid 7, arrange Blowdown of a safety valve controlling device and open height regulating device, described Blowdown of a safety valve controlling device adjustable lever 5 and flow regulating orifices 23 form; Described height regulating device of opening is by opening high stop collar 6 and Kai Gao bumping post 10 forms, opening high stop collar 6 upper end is arranged on main valve lid 7 by screw thread, piston cavity is stretched in lower end, opens high bumping post 10 and is fixedly connected on main valve clack 3 back side, and its center is shaped with the flow regulating orifices 23 being communicated with main valve inlet and piston cavity; Adjustable lever 5 upper end is arranged on out high stop collar 6 endoporus by screw thread, lower end extend in flow regulating orifices 23, open high bumping post 10 circumferencial direction and be shaped with several radial holes being communicated with flow regulating orifices 23 and piston cavity, make main valve body 1 import medium enter piston cavity from flow regulating orifices 23.Opening high bumping post 10 upper-end surface is opening immediately below high stop collar 6 lower end surface, and by regulating high stop collar 6 Vertical direction position, adjustment is opened high bumping post 10 upper-end surface and opened the distance between high stop collar 6 lower end surface, reaches the Lift of adjustment main valve clack 3.By the position of adjustment adjustable lever 5 Vertical direction, adjustment adjustable lever 5 inserts the degree of depth in flow regulating orifices 23, and during adjustment main valve clack 3 return, medium enters the speed in piston cavity, reaches and regulates main valve clack 3 seating velocity, and namely Blowdown of a safety valve regulates.Main valve clack 3 center is shaped with protruding to the circular cone in piston cavity.
Claims (2)
1. the adjustable flow Pilot operated safety valve with induction tube, comprise main valve, pilot valve, main valve comprises 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) inlet passage, main valve clack (3) and main valve seat (2) have the sealing surface cooperatively interacted, guide sleeve (4) upper end is fixedly mounted between main valve body (1) upper-end surface and main valve lid (7) lower end surface, between main valve clack (3) external cylindrical surface with guide sleeve (4) inner round wall, piston structure coordinates, main valve clack (3), guide sleeve (4), piston cavity is formed between main valve lid (7) three, mounting spring (8) in piston cavity between main valve clack (3) back side and main valve lid (7) lower end surface, main valve clack (3) is shaped with the overflow hole (21) being communicated with piston cavity and main valve body (1) inlet passage, pilot valve is arranged on main valve lid (7), its structure comprises pilot valve body (12), guide valve seat (11), pilot valve lobe, pilot stem (17), pilot valve lid (16) and pressure setting device, the import of guide valve seat (11) is communicated with piston cavity, and the outlet of guide valve seat (11) is communicated with floss hole, it is characterized in that pilot valve lobe is made up of interior flap (13) and outer flap (14), outer flap (14) upper end periphery coordinates with pilot valve lid (16) inner round wall is dynamic, outer flap (14) lower end surface has the sealing surface cooperatively interacted with guide valve seat (11) upper-end surface, outer flap (14) sealing surface place has radial boss, installs outer spring (15) between the upper table surface of this radial boss and pilot valve lid (16) interior table top, outer flap (14) is shaped with center hole, and interior flap (13) is cylindrical structure, and its external cylindrical surface coordinates with outer flap (14) center hole is dynamic, outer flap (14) axially middle part circumferencial direction is evenly shaped with several radial holes, this radial hole is communicated with outer flap (14) center hole and floss hole, extends in the pipe (20) on the downside of outer flap (14) center hole outside flap (14) lower end surface, setting pressure induction tube (9) between main valve clack (3) and interior flap (13), this pressure sensitive pipe (9) lower end periphery and main valve clack (3) fixed seal connection, upper end periphery coordinates with pipe (20) inner hole wall motive sealing, pressure sensitive pipe (9) upper-end surface has the sealing surface cooperatively interacted with interior flap (13) lower end surface, pressure sensitive pipe (9) center is shaped with the center hole being communicated with main valve body (1) inlet passage and interior flap (13) lower end surface, pressure sensitive pipe (9) middle part is fixedly installed between main valve lid (7) and guide valve seat (11) by radial orifice plate (22), outer flap (14) center bore inner wall circumferencial direction outside pressure sensitive pipe (9) upper-end surface is shaped with some axial flow grooves, this axial flow groove is communicated with the radial hole at outer flap (14) middle part, and pressure setting device is arranged between interior flap (13) back side and pilot valve lid (16).
2. the adjustable flow Pilot operated safety valve of band induction tube according to claim 1, it is characterized in that between main valve clack (3) back side and main valve lid (7), arranging Blowdown of a safety valve controlling device and opening height regulating device, described Blowdown of a safety valve controlling device adjustable lever (5) and flow regulating orifices (23) composition; Described height regulating device of opening forms by opening high stop collar (6) and opening high bumping post (10), opening high stop collar (6) upper end is arranged on main valve lid (7) by screw thread, piston cavity is stretched in lower end, open high bumping post (10) and be fixedly connected on main valve clack (3) back side, its center is shaped with the flow regulating orifices (23) being communicated with main valve inlet and piston cavity; Adjustable lever (5) upper end is arranged on out high stop collar (6) endoporus by screw thread, lower end extend in flow regulating orifices (23), opens high bumping post (10) circumferencial direction and is shaped with several radial holes being communicated with flow regulating orifices (23) and piston cavity.
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 true CN105065738A (en) | 2015-11-18 |
| CN105065738B CN105065738B (en) | 2017-08-04 |
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| 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 |
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| CN (1) | CN105065738B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864496A (en) * | 2016-05-27 | 2016-08-17 | 永阀门集团有限公司 | Backpressure-adjusting pilot operated safety valve |
Citations (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 |
| 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 |
| US20140150903A1 (en) * | 2011-05-17 | 2014-06-05 | Koganei Corporation | Pilot type pressure regulator |
| 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
Patent Citations (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 |
| US20140150903A1 (en) * | 2011-05-17 | 2014-06-05 | 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105864496A (en) * | 2016-05-27 | 2016-08-17 | 永阀门集团有限公司 | Backpressure-adjusting pilot operated safety valve |
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| Publication number | Publication date |
|---|---|
| CN105065738B (en) | 2017-08-04 |
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