CN203656288U - Pilot operated safety valve - Google Patents
Pilot operated safety valve Download PDFInfo
- Publication number
- CN203656288U CN203656288U CN201320879657.0U CN201320879657U CN203656288U CN 203656288 U CN203656288 U CN 203656288U CN 201320879657 U CN201320879657 U CN 201320879657U CN 203656288 U CN203656288 U CN 203656288U
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- Prior art keywords
- valve
- main
- pressure
- pilot operated
- bolt
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Abstract
The utility model discloses a pilot operated safety valve characterized by comprising a main valve (1), a valve rod (2), a valve core pressing member (3), a valve core (4), a valve sleeve (5), a main spring (6), an upper cover (7), a bolt (8), a nut (8), a gasket (10), a main spring seat (11), a tray (12), a command valve body (13), a bolt (14), a gasket (15), an adjusting spring (16), a command valve cover (17), an adjusting screw (18), an end cover (19), a press plate (20), an upper film press member (21), a lower film press member (22), a hexagon socket cap screw (23), a hex nut (24) and a diaphragm (25). A controlled medium pressure signal is sensed by a guide valve via the pilot operated safety valve and is sent out via the same; when pressure in front of the safety valve is lower than set pressure, a guide valve and the main valve are both at a close state exposing nothing; the main valve is in a self-sealed structure; the closer the pressure in front the valve is to the set-pressure, the more closely the valves are closed; when the pressure in front of the valve reaches to or surpasses the set-pressure, the guide valve is opened, the main valve is quickly opened and medium is discharged; and when the pressure in front of the valve returns to below the set-pressure, the guide valve is closed and the main valve is closed too.
Description
Technical field
The utility model relates to a kind of safety valve, is specifically a kind of Pilot operated safety valve.
Background technique
Pilot operated safety valve is mainly used in the production fields such as petroleum gas, chemical industry, electric power, metallurgy and gas, to ensure pressurized container, tooling and pipeline, avoids superpressure, ensures safety in production.Some Pilot operated safety valves are there are on the market at present, such as patent No. CN201310230973.X discloses a kind of Pilot operated safety valve, comprise main valve and pilot valve, main valve is provided with main liquid entering hole and main liquid outlet, in main valve, be provided with main valve plug, pilot valve is provided with auxiliary liquid entering hole and auxiliary liquid outlet, in main valve, main valve plug top is provided with air chamber, on main valve, on main liquid entering hole and pilot valve, between auxiliary liquid entering hole, be provided with liquid inlet pipe, on pilot valve, between auxiliary liquid outlet and main valve air chamber, be provided with air chamber pressure pipe, in described main valve, be provided with the valve core case with through hole, described main valve plug bottom is provided with primary seal sheet and pressing plate successively, pressing plate profile is consistent with valve core case shape of through holes, in described main valve, be provided with guide sleeve, guide sleeve bottom is circumferentially with some through holes, described main valve plug is arranged in guide sleeve, in described air chamber, between main valve plug top and valve body, be provided with main spring.Thereby the invention provides a kind of Pilot operated safety valve that can make the axis of main valve seat and main valve plug guarantee main valve body sealing on same straight line.The patent No. 201120434325.2 discloses a kind of Pilot operated safety valve, comprise main valve and pilot valve, main valve comprises valve body, valve seat, flap, valve gap, between flap and valve gap, be provided with spring, pilot valve adopts Direct spring loaded safety valve, be mainly that flap center is shaped with the aperture that is communicated with inlet passage and spring chamber, pilot valve is arranged in valve gap upper-end surface, and valve gap center is shaped with the through hole that is communicated with pilot valve import and main spool spring chamber.Pilot valve open after the pressure of releasing in main spool spring chamber, main valve is discharged entirely, the advantage such as have simple in structure, low cost of manufacture, emission flow is large, mass rate of emission is fast, is applicable to the overpressure protector on large diameter pipeline.
Model utility content
The purpose of this utility model is to provide a kind of Pilot operated safety valve at this, has operation precision high, reproducible; Return seat soon, do not reveal; The features such as adjustment convenience, long working life.The utility model is to realize like this, construct a kind of Pilot operated safety valve, it is characterized in that: comprise main valve, valve rod, spool casting die, spool, valve pocket, main spring, upper cover, bolt, nut, packing ring, main spring seat, pallet, commander's valve body, bolt, packing ring, Regulation spring, commander's valve gap, adjusting screw, end cap, pressing plate, upper mould part, lower mould part, hexagon socket cap head screw, hexagon nut, diaphragm;
Described upper cover is fixed on main valve by bolt, nut, packing ring; Valve pocket is arranged in main valve by hexagon socket cap head screw;
Described valve rod is arranged on spool lower end by spool casting die, and main spring arranges by main spring seat; Pallet is positioned at the cavity being formed by upper cover and main valve;
Described command valve body is positioned at upper cover top, and commander's valve gap is arranged on end cap, in commander's valve gap, is provided with adjusting screw; Diaphragm is between upper mould part, lower mould part; Upper mould part is fixed by hexagon nut, and Regulation spring upper end arranges by pressing plate.
The utility model has the advantage of: Pilot operated safety valve operation precision described in the utility model is high, reproducible; Return seat soon, do not reveal; Adjustment is convenient, long working life.
Working principle: Pilot operated safety valve utilizes pilot valve carry out the controlled pressure medium signal of sensing and provide signal.When the pressure before safety valve is during lower than Set pressure, pilot valve and main valve are all in dead-tight closed condition, and main valve is self sealing structure, and upstream pressure more approaches Set pressure, closes tighter; In the time that upstream pressure meets or exceeds Set pressure, pilot valve is opened, and main valve is opened rapidly, media discharge; Below upstream pressure is got back to Set pressure time, pilot valve cuts out, and main valve is also closed thereupon.
Brief description of the drawings
Fig. 1 is the utility model Pilot operated safety valve structural representation
Wherein: main valve 1, valve rod 2, spool casting die 3, spool 4, valve pocket 5, main spring 6, upper cover 7, bolt 8, nut 9, packing ring 10, main spring seat 11, pallet 12, commander's valve body 13, bolt 14, packing ring 15, Regulation spring 16, commander's valve gap 17, adjusting screw 18, end cap 19, pressing plate 20, upper mould part 21, lower mould part 22, hexagon socket cap head screw 23, hexagon nut 24, diaphragm 25.
Embodiment
Below in conjunction with accompanying drawing 1, the utility model is elaborated, the technological scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment who obtains under creative work prerequisite, all belong to the scope of the utility model protection.
Pilot operated safety valve is mainly used in the production fields such as petroleum gas, chemical industry, electric power, metallurgy and gas, to ensure pressurized container, tooling and pipeline, avoids superpressure, ensures safety in production.
As shown in Figure 1, a kind of Pilot operated safety valve described in the utility model, operation precision is high, reproducible; Return seat soon, do not reveal; Adjustment is convenient, long working life.Safety valve comprises main valve 1, valve rod 2, spool casting die 3, spool 4, valve pocket 5, main spring 6, upper cover 7, bolt 8, nut 9, packing ring 10, main spring seat 11, pallet 12, commander's valve body 13, bolt 14, packing ring 15, Regulation spring 16, commander's valve gap 17, adjusting screw 18, end cap 19, pressing plate 20, upper mould part 21, lower mould part 22, hexagon socket cap head screw 23, hexagon nut 24, diaphragm 25.
Described upper cover 7 is fixed on main valve 1 by bolt 8, nut 9, packing ring 10; Valve pocket 5 is arranged in main valve 1 by hexagon socket cap head screw 23.
Described valve rod 2 is arranged on spool 4 lower ends by spool casting die 3, and main spring 6 arranges by main spring seat 11; Pallet 12 is positioned at the cavity being formed by upper cover 7 and main valve 1.
Described commander's valve body 13 is positioned at upper cover 7 tops, and commander's valve gap 17 is arranged on end cap 19, in commander's valve gap 17, is provided with adjusting screw 18; Diaphragm 25 is between upper mould part 21, lower mould part 22; Upper mould part 21 is fixing by hexagon nut 24, and Regulation spring 16 upper ends arrange by pressing plate 20.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the utility model.To be apparent for those skilled in the art to these embodiments' multiple amendment, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (1)
1. a Pilot operated safety valve, is characterized in that:
Comprise main valve (1), valve rod (2), spool casting die (3), spool (4), valve pocket (5), main spring (6), upper cover (7), bolt (8), nut (9), packing ring (10), main spring seat (11), pallet (12), commander's valve body (13), bolt (14), packing ring (15), Regulation spring (16), commander's valve gap (17), adjusting screw (18), end cap (19), pressing plate (20), upper mould part (21), lower mould part (22), hexagon socket cap head screw (23), hexagon nut (24), diaphragm (25),
Described upper cover (7) is fixed on main valve (1) by bolt (8), nut (9), packing ring (10); Valve pocket (5) is arranged in main valve (1) by hexagon socket cap head screw (23);
Described valve rod (2) is arranged on spool (4) lower end by spool casting die (3), and main spring (6) arranges by main spring seat (11); Pallet (12) is positioned at the cavity being formed by upper cover (7) and main valve (1);
Described commander's valve body (13) is positioned at upper cover (7) top, and it is upper that commander's valve gap (17) is arranged on end cap (19), in commander's valve gap (17), is provided with adjusting screw (18); Diaphragm (25) is positioned between mould part (21), lower mould part (22); Upper mould part (21) is fixing by hexagon nut (24), and Regulation spring (16) upper end arranges by pressing plate (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320879657.0U CN203656288U (en) | 2013-12-30 | 2013-12-30 | Pilot operated safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320879657.0U CN203656288U (en) | 2013-12-30 | 2013-12-30 | Pilot operated safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203656288U true CN203656288U (en) | 2014-06-18 |
Family
ID=50922676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320879657.0U Expired - Fee Related CN203656288U (en) | 2013-12-30 | 2013-12-30 | Pilot operated safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203656288U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672064A (en) * | 2013-12-30 | 2014-03-26 | 乐山市山鹰模具有限责任公司 | Pilot operated safety valve |
| CN104358917A (en) * | 2014-11-05 | 2015-02-18 | 北京航天动力研究所 | Pilot operated safety valve with independent gas source control |
| WO2021177891A1 (en) * | 2020-03-04 | 2021-09-10 | Ham-Let (Israel-Canada) Ltd | Apparatus, processing device and methods for relieving pressure and system having the apparatus |
-
2013
- 2013-12-30 CN CN201320879657.0U patent/CN203656288U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672064A (en) * | 2013-12-30 | 2014-03-26 | 乐山市山鹰模具有限责任公司 | Pilot operated safety valve |
| CN104358917A (en) * | 2014-11-05 | 2015-02-18 | 北京航天动力研究所 | Pilot operated safety valve with independent gas source control |
| CN104358917B (en) * | 2014-11-05 | 2017-03-01 | 北京航天石化技术装备工程有限公司 | The pilot operated safety valve controlling with individual gas sources |
| WO2021177891A1 (en) * | 2020-03-04 | 2021-09-10 | Ham-Let (Israel-Canada) Ltd | Apparatus, processing device and methods for relieving pressure and system having the apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20181230 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |