CN105937640A - Safety valve - Google Patents
Safety valve Download PDFInfo
- Publication number
- CN105937640A CN105937640A CN201610396104.8A CN201610396104A CN105937640A CN 105937640 A CN105937640 A CN 105937640A CN 201610396104 A CN201610396104 A CN 201610396104A CN 105937640 A CN105937640 A CN 105937640A
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- CN
- China
- Prior art keywords
- valve
- main valve
- auxiliary
- described main
- plug
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention relates to a hydraulic valve in a hydraulic element, in particular to a safety valve. The safety valve comprises a valve body, a main valve element, a main valve rod, a main spring and a valve cover; the main valve rod is sleeved with the main spring, the valve body is provided with an inlet and an outlet, an auxiliary valve element is connected to the lower portion of the main valve element, and the main valve element and the auxiliary valve element are in slippage fit; an elastic part is arranged between the main valve element and the auxiliary valve element and has pull force enabling the auxiliary valve element and an end face seal of the main valve element to be attached, a through hole is formed in the main valve element, and enables the outlet to be communicated with the end face seal and located in the inner side of the end face seal, the diameter of the main valve element is larger than or equal to the inner diameter of the inlet, the diameter of the auxiliary valve element is smaller than the inner diameter of the inlet, and the outlet is communicated with the atmosphere; and according to the hydraulic valve, it can be ensured that the pressure in a container or pipeline cannot be excessively smaller than barometric pressure for a long time, and the effects of protecting the container or pipeline and the main valve element of the safety valve can be achieved.
Description
Technical field
The present invention relates to the hydraulic valve in Hydraulic Elements, be specifically related to a kind of relief valve.
Background technology
Relief valve is that opening and closing element is in normally off by under External Force Acting, when the pressure medium in equipment or pipeline increases to over setting, prevents pressure medium in pipeline or equipment from exceeding the Special valve of specified value by discharge medium outside system.Relief valve belongs to automatic valve class, is mainly used on boiler, pressure vessels and pipes, controls pressure and is less than setting, personal safety and equipment have been run important protective effect.
When environment changes, such as temperature, pressure in container or pipeline may diminish, and existing relief valve often can only play pressure release prevents hypertonia from setting off an explosion, but the problem less than ambient pressure of the pressure in container or pipeline can not be tackled, when the lengthy pressure in container or pipeline differs bigger less than the pressure in ambient pressure or container or pipeline with ambient pressure, container or pipe deforming can be caused even to rupture.
Summary of the invention
The present invention is directed to the problems referred to above and a kind of relief valve is provided.
The technical solution used in the present invention is as follows: a kind of relief valve, including valve body, main valve plug, main valve stem, main spring, valve gap, described main spring is enclosed within main valve stem, described valve body is provided with import, outlet, auxiliary connection spool below described main valve plug, the sliding mutual with described auxiliary valve core of described main valve plug coordinates, it is provided with elastic component between described main valve plug and described auxiliary valve core, described elastic component has the pulling force making described auxiliary valve core with described main valve plug end face seal laminating, described main valve plug is provided with through hole, described through hole makes outlet communicate with described end face seal and is positioned at the inner side of described end face seal, the diameter of described main valve plug is more than or equal to the internal diameter of described import, the diameter of described auxiliary valve core is less than the internal diameter of described import, described outlet communicates with air.
Described main valve plug cross section is T-shaped, is provided with groove below described main valve plug, and described auxiliary valve core cross section is T-shaped, and described auxiliary valve core upper end is positioned at described groove.
Described elastic component is positioned at described groove, described elastic component is auxiliary spring, the upper end of described auxiliary valve core is fixed with jump ring, the upper end of described elastic component withstands on the lower end of described jump ring, described main valve plug lower end is fixing connects cock, described cock is between described main valve plug and auxiliary valve core, and the lower end of described elastic component is against cock upper end.
The position that described auxiliary valve core is fitted in itself and described main valve plug end face seal is provided with O RunddichtringO.
Described main valve stem passes described valve gap, is provided with bearing between described main valve stem and valve gap.
Described main valve stem for threadeding, described main valve stem is fixed with spring base with main valve plug, and the lower end of described main spring withstands on described spring base, is provided with bearing block below described bearing, and the upper end of described main spring is connected with bearing block.
Described main spring is extruded with main valve plug by described valve gap between described valve gap and main valve plug, and described valve gap is that screw connection manner is connected with valve body.
The lower end of described valve gap is fixedly connected with and cap.
Beneficial effects of the present invention is as follows: during the pressure that the pressure of auxiliary valve core is applied by the medium below described auxiliary valve core less than the medium above auxiliary valve core, pressure reduction promotes auxiliary valve core to move down, until two-way pressure balances in air gap between through hole and auxiliary valve core and the valve body exported through main valve plug enters container or pipeline, elastic component hauls auxiliary valve core and is move upwardly until auxiliary valve core and fits tightly with described main valve plug, described outlet communicates with air, can ensure that the pressure in container or pipeline will not the most excessively be less than atmospheric pressure, the effect of the main valve plug of protection container or pipeline and relief valve can be played.
Accompanying drawing explanation
Fig. 1 is the cross-sectional view of relief valve.
In figure, 1, valve body；101, import；102, outlet；2, main valve plug；201, through hole；202, groove；3, main valve stem；4, main spring；5, valve gap；6, spring base；7, bearing；8, bearing holder (housing, cover)；9, bearing block；10, and cap；11, the first sealing ring；12, auxiliary valve core；13, elastic component；14, jump ring；15, cock；16, O RunddichtringOs；7, nut；18, sealing shroud.
Detailed description of the invention
Below in conjunction with the accompanying drawings and detailed description of the invention, the present invention can be better described.
nullA kind of relief valve，Including valve body 1、Main valve plug 2、Main valve stem 3、Main spring 4，Valve gap 5，Described main spring 4 is enclosed within main valve stem 3，Described valve body 1 is provided with import 101、Outlet 102，Auxiliary connection spool 12 below described main valve plug 2，Described main valve plug 2 coordinates with the described mutual sliding of auxiliary valve core 12，It is provided with elastic component 13 between described main valve plug 2 and described auxiliary valve core 12，Described elastic component 13 has the pulling force making described auxiliary valve core 12 with described main valve plug 2 end face seal laminating，Described main valve plug 2 is provided with through hole 201，Described through hole 201 makes outlet 102 communicate with described end face seal and is positioned at the inner side of described end face seal，The diameter of described main valve plug 2 is more than or equal to the internal diameter of described import 101，The diameter of described auxiliary valve core 12 is less than the internal diameter of described import 101，Described outlet 102 communicates with air.
When pressure at described import 101 is less than or equal to the thrust of described main spring 4, described main valve plug 2 lower end and described valve body 1 fit tightly and make its block input port 101, when pressure at described import 101 is more than the thrust of described main spring 4, described main valve plug 2 and described import 101 from, described import 101 communicates with outlet 102.
When medium below described auxiliary valve core 12 is less than atmospheric pressure to the pressure of auxiliary valve core 12, atmospheric pressure promotes auxiliary valve core 12 to move down, and air gap between outlet 102 through hole and auxiliary valve core 12 and the valve bodies through main valve plug 2 enters in container or pipeline.Medium below described auxiliary valve core 12 to the pressure of auxiliary valve core 12 equal to atmospheric pressure time, auxiliary spring hauls auxiliary valve core and is move upwardly until auxiliary valve core 12 and fits tightly with described main valve plug 2.Can ensure that the air pressure in container or pipeline is not less than atmospheric pressure.
Described main valve plug 2 cross section is T-shaped, is provided with groove 202 below described main valve plug 2, and described auxiliary valve core 12 cross section is T-shaped, and described auxiliary valve core 12 upper end is positioned at described groove 202.Structure tightly promotees, easy for installation.
Described elastic component 13 is positioned at described groove 202, described elastic component 13 is auxiliary spring, the upper end of described auxiliary valve core 12 is fixed with jump ring 14, the upper end of described elastic component 13 withstands on the lower end of described jump ring 14, described main valve plug 2 lower end is fixing connects cock 15, described cock 15 is between described main valve plug 2 and auxiliary valve core 12, and the lower end of described elastic component 13 is against cock 15 upper end.Auxiliary spring, under jump ring 14 and cock 15 mutually extrude, has a thrust upwards, thus has the thrust gone up mutually to auxiliary valve core 12 jump ring 14, makes described auxiliary valve core 12 and the end face seal of described main valve plug 2
The position that described auxiliary valve core 12 is fitted in itself and described main valve plug 2 end face seal is provided with O RunddichtringO 16.The sealing effectiveness making end face seal is more preferable.
Described main valve stem 3, through described valve gap 5, is provided with bearing 7 between described main valve stem 3 and valve gap 5.Make main valve stem about 3 more clear and more coherent.
Described main valve stem 3 for threadeding, described main valve stem 3 is fixed with spring base 6 with main valve plug 2, and the lower end of described main spring 4 withstands on described spring base 6, is provided with bearing block 9 below described bearing 7, and the upper end of described main spring 4 is connected with bearing block 9.Main valve plug 2 need to overcome the thrust of main spring 4 just can upwards sliding, play the effect of pressure release.
Described valve gap 5 is connected for screw connection manner with valve body 1.Existing various pressure relief valve device, because its safe pressure pressure release value is non-adjustable, thus cannot require and pressure release according to the difference of force value in container or pipeline.When environment changes, the pressure voltage as required by temperature, container or pipeline can change, if relief valve device cannot regulate its pressure voltage accordingly, easily makes container or pipeline may be in the unsafe factor of supertension, the danger that even set off an explosion.Valve gap is that screw connection manner is connected with valve body, and turn valve gap is close to or away from valve body, thus regulates the thrust size of main spring, the pressure voltage of corresponding regulation safety valve.
The lower end of described valve gap 5 is fixedly connected with and cap 10.Turn valve gap can be carried out with the instrument such as spanner adaptive with also cap.
Described valve gap 5 is connected for screw connection manner with valve body 1.The lower end of described valve gap 5 is fixedly connected with and cap 10.Turn valve gap can be carried out with the instrument such as spanner adaptive with also cap.
The position that described main valve plug 2 lower end and described valve body 1 fit tightly is provided with the first sealing ring 11.Strengthen the sealing between main valve plug 2 and described valve body 1.
Wherein valve body 1 includes being provided with import 101, the lower valve body 103 of outlet 102, and it is provided with main valve stem 3 and the upper valve body 104 being connected with valve gap 5, described lower valve body 103 is connected with upper valve body 104 nut 17, is provided with sealing shroud 18, is so easily installed between described lower valve body 103 and upper valve body 104.
It is provided with the second sealing ring 19 between described main valve plug 2 and upper valve body 104 and sealing shroud 18, only medium can be put and contact with main valve stem and main spring, affect its operation and occupation mode.
The container of installation relief valve described in the present embodiment or pipeline, its safe pressure scope is the pressure voltage that air is depressed into relief valve, and the pressure voltage of relief valve can be adjusted by turn valve gap and cap within the specific limits, be adapted for mount on comprising to environment than more sensitive medium (when environmental change such as temperature, the pressure of medium changes greatly) container or pipeline on, and medium therein can be with air contact.
The foregoing is only a kind of embodiment of the present invention, be not used for limiting the scope of the invention；Protection scope of the present invention is limited by the claim in claims, and every equivalence made according to invention changes and amendment, all within the protection domain of patent of the present invention.
Claims (8)
- null1. a relief valve，Including valve body (1)、Main valve plug (2)、Main valve stem (3)、Main spring (4)，Valve gap (5)，It is characterized in that: described main spring (4) is enclosed within main valve stem (3)，Described valve body (1) is provided with import (101)、Outlet (102)，Described main valve plug (2) lower section auxiliary connection spool (12)，Described main valve plug (2) coordinates with described auxiliary valve core (12) mutually sliding，Elastic component (13) it is provided with between described main valve plug (2) and described auxiliary valve core (12)，Described elastic component (13) has the pulling force making described auxiliary valve core (12) with described main valve plug (2) end face seal laminating，Described main valve plug (2) is provided with through hole (201)，Described through hole (201) makes outlet (102) communicate with described end face seal and is positioned at the inner side of described end face seal，The diameter of described main valve plug (2) is more than or equal to the internal diameter of described import (101)，The diameter of described auxiliary valve core (12) is less than the internal diameter of described import (101)，Described outlet (102) communicates with air.
- Relief valve the most according to claim 1, it is characterized in that: described main valve plug (2) cross section is T-shaped, described main valve plug (2) lower section is provided with groove (202), and described auxiliary valve core (12) cross section is T-shaped, and described auxiliary valve core (12) upper end is positioned at described groove (202).
- Relief valve the most according to claim 2, it is characterized in that: described elastic component (13) is positioned at described groove (202), described elastic component (13) is auxiliary spring, the upper end of described auxiliary valve core (12) is fixed with jump ring (14), the upper end of described elastic component (13) withstands on the lower end of described jump ring (14), described main valve plug (2) lower end is fixing connects cock (15), described cock (15) is positioned between described main valve plug (2) and auxiliary valve core (12), and the lower end of described elastic component (13) is against cock (15) upper end.
- Relief valve the most according to claim 1, it is characterised in that: the position that described auxiliary valve core (12) is fitted in itself and described main valve plug (2) end face seal is provided with O RunddichtringO (16).
- Relief valve the most according to claim 1, it is characterised in that: described main valve stem (3) passes described valve gap (5), is provided with bearing (7) between described main valve stem (3) and valve gap (5).
- Relief valve the most according to claim 5, it is characterized in that: described main valve stem (3) with main valve plug (2) for threadeding, spring base (6) it is fixed with on described main valve stem (3), the lower end of described main spring (4) withstands on described spring base (6), described bearing (7) lower section is provided with bearing block (9), and the upper end of described main spring (4) is connected with bearing block (9).
- Relief valve the most according to claim 1, it is characterised in that: described main spring (4) is extruded with main valve plug (2) by described valve gap (5) between described valve gap (5) and main valve plug (2), and described valve gap (5) is that screw connection manner is connected with valve body (1).
- Relief valve the most according to claim 7, it is characterised in that: the lower end of described valve gap (5) is fixedly connected with and cap (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610396104.8A CN105937640B (en) | 2016-06-07 | 2016-06-07 | A kind of safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610396104.8A CN105937640B (en) | 2016-06-07 | 2016-06-07 | A kind of safety valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105937640A true CN105937640A (en) | 2016-09-14 |
| CN105937640B CN105937640B (en) | 2018-04-03 |
Family
ID=57152265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610396104.8A Expired - Fee Related CN105937640B (en) | 2016-06-07 | 2016-06-07 | A kind of safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105937640B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763831A (en) * | 2016-12-26 | 2017-05-31 | 金洪水 | Pilot-operated type self-locking stop valve |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5282492A (en) * | 1993-02-23 | 1994-02-01 | The United States Of America As Represented By The Secretary Of The Navy | Dual valve plate two-way pressure relief valve |
| CN1322905A (en) * | 2000-05-08 | 2001-11-21 | 帕森斯及惠特莫尔有限公司 | Two-way check valve using for hydraulic system |
| JP2001330164A (en) * | 2000-05-22 | 2001-11-30 | Mikuni Adec Corp | Two-way valve |
| US20030150492A1 (en) * | 2002-02-14 | 2003-08-14 | Nifco Inc. | Two-way valve |
| CN102425691A (en) * | 2011-11-29 | 2012-04-25 | 湘潭林海机械制造有限公司 | Spring-type breather valve |
| CN102537445A (en) * | 2011-10-10 | 2012-07-04 | 张周卫 | Control safety valve for LNG (liquefied natural gas) low-temperature process |
| JP2013011201A (en) * | 2011-06-28 | 2013-01-17 | Yamashin-Filter Corp | Breather device |
| CN203963028U (en) * | 2014-02-11 | 2014-11-26 | 东正科技有限公司 | A kind of hand lever relief valve |
| CN205663950U (en) * | 2016-06-07 | 2016-10-26 | 温州天悦流体设备科技有限公司 | Safety valve |
-
2016
- 2016-06-07 CN CN201610396104.8A patent/CN105937640B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5282492A (en) * | 1993-02-23 | 1994-02-01 | The United States Of America As Represented By The Secretary Of The Navy | Dual valve plate two-way pressure relief valve |
| CN1322905A (en) * | 2000-05-08 | 2001-11-21 | 帕森斯及惠特莫尔有限公司 | Two-way check valve using for hydraulic system |
| JP2001330164A (en) * | 2000-05-22 | 2001-11-30 | Mikuni Adec Corp | Two-way valve |
| US20030150492A1 (en) * | 2002-02-14 | 2003-08-14 | Nifco Inc. | Two-way valve |
| JP2013011201A (en) * | 2011-06-28 | 2013-01-17 | Yamashin-Filter Corp | Breather device |
| CN102537445A (en) * | 2011-10-10 | 2012-07-04 | 张周卫 | Control safety valve for LNG (liquefied natural gas) low-temperature process |
| CN102425691A (en) * | 2011-11-29 | 2012-04-25 | 湘潭林海机械制造有限公司 | Spring-type breather valve |
| CN203963028U (en) * | 2014-02-11 | 2014-11-26 | 东正科技有限公司 | A kind of hand lever relief valve |
| CN205663950U (en) * | 2016-06-07 | 2016-10-26 | 温州天悦流体设备科技有限公司 | Safety valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106763831A (en) * | 2016-12-26 | 2017-05-31 | 金洪水 | Pilot-operated type self-locking stop valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105937640B (en) | 2018-04-03 |
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Granted publication date: 20180403 Termination date: 20210607 |
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| CF01 | Termination of patent right due to non-payment of annual fee |