CN104791529B - Adjustable safety valve - Google Patents
Adjustable safety valve Download PDFInfo
- Publication number
- CN104791529B CN104791529B CN201510225296.1A CN201510225296A CN104791529B CN 104791529 B CN104791529 B CN 104791529B CN 201510225296 A CN201510225296 A CN 201510225296A CN 104791529 B CN104791529 B CN 104791529B
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- China
- Prior art keywords
- piston
- safety valve
- valve body
- valve
- pressure
- 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
- F16K17/02—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
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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
- F16K17/044—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 more than one spring
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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
- F16K17/048—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 combined with other safety valves, or with pressure control devices
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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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0008—Mechanical means
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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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0066—Hydraulic or pneumatic means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a kind of adjustable safety valve, belong to safety valve technical field.Provided with the sealed cylinder body connected with foot passage in the adjustable safety valve of the present invention, including valve body, the valve body, side cylinder is connected with the foot passage, the side cylinder interior sealing is provided with piston three and piston four；The top of the piston four matches with alarm.The adjustable safety valve of the present invention, it is simple in construction, security reliability is high, easy to maintenance, strong, the service life length that adapts to local gas holdup ability, can over time with the change on-line control valve of weather take-off pressure.
Description
Technical field
The present invention relates to safety valve technical field, particularly a kind of adjustable safety valve.
Background technology
With the continuous popularization and application of LNG clean energy resourcies, existing LNG build a station all can be different degrees of all kinds of safety of use
Valve.Simultaneously because LNG characteristic（Thermal coefficient of expansion is big）, with high danger.Also just to safe valve performance, quality and peace
Propose higher requirement entirely.
Common safety valve can be influenceed the take-off precision of valve, separately due to using spring structure by the change of time and temperature
Common safety valve is not designed with online data detection, it is impossible to which the service condition to safety valve carries out Data Collection, can only be in maintenance
It can just be pinpointed the problems when maintenance or prison inspection.Therefore once safety valve is damaged in use, it is impossible to play due superpressure and protect
Shield, can cause loine pressure is exceeded to damage delivery line and corollary equipment；Inherently cause LNG station point to stop transport, be that website is brought
Huge economic loss and potential safety hazard.
The content of the invention
The goal of the invention of the present invention is：For above-mentioned problem, overcome the shortcomings of that there is provided one kind for existing safety valve
Adjustable safety valve, can be obviously improved properties of product, while can improve reliability when product is used again.
The technical solution adopted by the present invention is as follows：
Provided with the closed cylinder connected with foot passage in the adjustable safety valve of the present invention, including valve body, the valve body
Side cylinder is connected with body, the foot passage, the side cylinder interior sealing is provided with piston three and piston four；The top of the piston four
Match with alarm.
Due to said structure, when body base pressure rise extremely（1.76MPa）Release pressure and do not promote piston two upward
It is mobile,（Piston two because a certain reason it is stuck when）Liquid-driving piston three is moved, and (now pressure reaches 1.85MPa) liquid enters
Entering the cylinder body between piston three and piston four promotes piston four to move down, and the top limb of piston four promotes supporting alarm to open
Close, start alarm equipment alarm.So as to overcome the shortcomings of that existing safety valve, there is provided a kind of adjustable safety valve, can be obviously improved
Properties of product, while reliability when product is used can be improved again.
The spring two being arranged on the adjustable safety valve of the present invention, the piston three makes piston three be affixed at the import of side cylinder
Form sealing；The spring three being arranged on the piston four, makes piston four form sealing on the side wall of side cylinder.
By the cooperation of piston three and spring two, when pressure reaches 1.8MPa in foot passage, it can open；So as to just
In being controlled；Piston four is controlled by spring three simultaneously, matched so as to the top by piston four with alarm, to report
Alert device is controlled, and overcomes the shortcomings of existing safety valve, plays a part of protection.
The adjustable safety valve of the present invention, the sealed cylinder body is formed by piston one, piston two and pressure gauge；It is described
The foot passage of valve body and the connectivity part of sealed cylinder body are provided with piston two；The taper of the bottom of piston two and valve interior wall
Taper matches and can form sealing；Fill and be connected with hydraulic oil, the piston one for adjusting in the sealed cylinder body
The push rod of whole sealed cylinder body internal pressure；Pressure gauge is connected with the side wall of the sealed cylinder body.
Due to said structure, hydraulic oil can be filled in sealed cylinder body, by adjusting push rod length adjustment compression spring,
It is final to adjust sealed cylinder body internal pressure；Pressure gauge is used to show the pressure in sealed cylinder body；Can by piston two come
The opening and closing between foot passage and sealed cylinder body is controlled, only when the pressure in foot passage reaches 1.76MPa, the piston two
It is opened to discharge valve body base pressure；Automatically completing makes operation extremely easy.So as to realize the regulation to the safety valve
Effect；Properties of product can be obviously improved, while reliability when product is used can be improved again.
The adjustable safety valve of the present invention, the top stem casing is provided with the locking nut two on valve body, and the push rod is passed through
Spring is connected on piston one.
Due to said structure, piston one finally can be adjusted closed by adjusting push rod length adjustment compression spring
Position in cylinder body, so as to realize control sealed cylinder body internal pressure so that operation is extremely easy.
The adjustable safety valve of the present invention, in the foot passage of the valve body during hydraulic pressure >=1.76MPa, the piston two with
Sealing between valve body can be unlocked；In the foot passage of the valve body during hydraulic pressure >=1.8MPa, the side cylinder inner carrier three with
Sealing between valve body can be unlocked, and the piston four promotes alarm to open.
Due to said structure, in order that safety valve needs to protect pipeline when in use, using the design pressure of pipeline
For 2.0MPa, therefore it is required that safety valve jumping up is no more than 1.76MPa, alarm is no more than 1.85MPa；It is simultaneously matched
Immersed pump, maximum pressure is 1.2 MPa during work, in addition the MPa of storage tank self-generated pressure 0.5, therefore the safety valve jumping up pressure is set
Put in 1.76 MPa；Namely safety valve pressure less than 1.7 MPa rise pump work when will take-off, affirmative do not allow, such as
Fruit again can not protective conduit higher than 2.0 MPa；Therefore the safety valve have selected above-mentioned rated pressure value；Only when in foot passage
Hydraulic pressure reaches more than 1.76MPa, could open the sealing between piston two and valve body；Similarly, hydraulic pressure reaches only in foot passage
To more than 1.8MPa, the sealing between ability open side cylinder inner carrier three and valve body can just make piston four promote alarm to open；
It follows that when hydraulic pressure is between 1.76MPa-1.8MPa in foot passage, the only sealing between piston two and valve body
It is unlocked；Therefore to may be such that the adjustable safety valve has simple in construction by the present invention, and security reliability is high, easy to maintenance, adapt to
Local gas holdup ability is strong, service life length, can over time release pressure with the change on-line control valve of weather the features such as.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows：
1st, adjustable safety valve of the invention, simple in construction, and security reliability is high, easy to maintenance, adapt to local gas holdup energy
Power is strong, service life length, can over time with the change on-line control valve of weather release pressure；
2nd, adjustable safety valve of the invention, can be obviously improved properties of product, while can improve when product is used again
Reliability.
Brief description of the drawings
Fig. 1 is the structural representation of the adjustable safety valve of the present invention.
Marked in figure：1- push rods, 2- locking nuts one, 3- locking nuts two, 4- springs, 5- sealing rings, 6- pistons one, 7-
Seal plug, 8- sealing gaskets, 9- pistons two, 10- pressure gauges, 11- locking nuts three, 12- valve bodies, 13- pistons three, 14- springs
2nd, 15- pistons four, 16- springs three, 17- nuts three.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in figure 1, the adjustable safety valve of the present invention, including push rod 1 are connected by screw thread with locking nut 23, lock
Tight nut 23 is connected and fixed to the face of valve body 12 by screw thread and valve body 12；Locking nut 1 is connected by screw thread with push rod 1
And the position of fixed mandril 1；Push rod 1 passes through the thrust compression piston 1 of threaded adjustment spring 4, the exterior seal ring of piston 1 and valve body
Wall is sealed；Hydraulic oil passes through spring 4 in piston 1 and piston 29 and sealing bolt 7, the formation closing chamber of pressure gauge 10, closing chamber
Pressure cause the bottom face of piston 29 and valve seal；Pressure gauge 10 passes through locking nut 3 11 and sealing gasket 8 and the end of valve body 12
The display closing cavity pressure of face pressure gauge 10.Side cylinder is connected with the foot passage, the side cylinder interior sealing is provided with piston three
13 and piston 4 15；The top of the piston 4 15 matches with alarm；The spring 2 14 being arranged on the piston 3 13 makes
Piston 3 13, which is affixed at the import of side cylinder, forms sealing；The spring 3 16 being arranged on the piston 4 15, makes piston 4 15 in side
Sealing is formed on the side wall of cylinder.Now closing cavity pressure is 1.76MPa when the base pressure of valve body 12 is increased to 1.76MPa springs 4
Compression, piston 29 is moved up, the reduction of the base pressure of valve body 12.Do not promote when the base pressure of valve body 12 is increased to 1.76MPa and
Piston 29 is moved up, piston 29 because a certain reason it is stuck when, the base pressure of valve body 12 promote the compression spring of piston 3 13
2 14, the cylinder body that (now pressure reaches 1.8MPa) pressure enters between piston 3 13 and piston 4 15 promotes piston 4 15 to press
Contracting spring 3 16 is moved down, and the end limb of piston 4 15 prolongs the endoporus of nut 3 17 and promotes supporting alarm switch, starts alarm
Alarm.
In the present invention, in order that safety valve needs to protect pipeline when in use, use the design pressure of pipeline for
2.0MPa, therefore it is required that safety valve jumping up is alarmed no more than 1.76MPa is no more than 1.85MPa；Simultaneously matched is latent
Liquid pump, maximum pressure is 1.2 MPa during work, in addition the MPa of storage tank self-generated pressure 0.5, therefore the safety valve jumping up pressure is set
In 1.76 MPa；Namely safety valve pressure less than 1.7 MPa rise pump work when will take-off, affirmative do not allow, if
Again can not protective conduit higher than 2.0 MPa；Therefore the safety valve have selected above-mentioned rated pressure value；Only when liquid in foot passage
Pressure reaches more than 1.76MPa, could open the sealing between piston two and valve body；Similarly, hydraulic pressure reaches only in foot passage
More than 1.8MPa, the sealing between ability open side cylinder inner carrier three and valve body, can just make piston four promote alarm to open；By
This understands, when hydraulic pressure is between 1.76MPa-1.8MPa in foot passage, the sealing quilt only between piston two and valve body
Open.
Therefore to may be such that the adjustable safety valve has simple in construction by the present invention, and security reliability is high, easy to maintenance, adapt to
Local gas holdup ability is strong, service life length, can over time release pressure with the change on-line control valve of weather the features such as.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (4)
1. adjustable safety valve, it is characterised in that：It includes valve body（12）, the valve body（12）Interior be provided with connects with foot passage
Sealed cylinder body, side cylinder is connected with the foot passage, the side cylinder interior sealing is provided with piston three（13）With piston four
（15）；The piston four（15）Top match with alarm；The sealed cylinder body passes through piston one（6）, piston two（9）
And pressure gauge（10）Formed；The valve body（12）Foot passage and sealed cylinder body connectivity part be provided with piston two（9）；It is described
Piston two（9）The taper and valve body of bottom（12）The taper of inwall matches and can form sealing；The sealed cylinder body is built-in
Completely there are hydraulic oil, the piston one（6）On be connected with push rod for adjusting sealed cylinder body internal pressure（1）；The closing
Pressure gauge is connected with the side wall of formula cylinder body（10）.
2. adjustable safety valve as claimed in claim 1, it is characterised in that：The piston three（13）On the spring two that is arranged
（14）Make piston three（13）It is affixed at the import of side cylinder and forms sealing；The piston four（15）On the spring three that is arranged（16）, make
Piston four（15）Sealing is formed on the side wall of side cylinder.
3. adjustable safety valve as claimed in claim 1 or 2, it is characterised in that：The push rod（1）It is arranged with valve body
Locking nut two（3）, the push rod（1）Through spring（4）It is connected to piston one（6）On.
4. adjustable safety valve as claimed in claim 1 or 2, it is characterised in that：The valve body（12）Foot passage in liquid
During pressure >=1.76MPa, the piston two（9）With valve body（12）Between sealing can be unlocked；The valve body（12）Bottom lead to
In road during hydraulic pressure >=1.85MPa, the side cylinder inner carrier three（13）With valve body（12）Between sealing can be unlocked, the piston
Four（15）Alarm is promoted to open.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510225296.1A CN104791529B (en) | 2015-05-06 | 2015-05-06 | Adjustable safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510225296.1A CN104791529B (en) | 2015-05-06 | 2015-05-06 | Adjustable safety valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104791529A CN104791529A (en) | 2015-07-22 |
| CN104791529B true CN104791529B (en) | 2017-10-20 |
Family
ID=53556572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510225296.1A Active CN104791529B (en) | 2015-05-06 | 2015-05-06 | Adjustable safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104791529B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2189249Y (en) * | 1993-08-26 | 1995-02-08 | 陶朱秋 | Equalising valve |
| CN200999893Y (en) * | 2006-12-25 | 2008-01-02 | 安瑞科(蚌埠)压缩机有限公司 | Pressure holding valve |
| ITMO20080043A1 (en) * | 2008-02-19 | 2009-08-20 | P A S R L | PERFECT PRESSURE BY-PASS VALVE AND ADJUSTMENT VALVE. |
| CN201322121Y (en) * | 2008-11-28 | 2009-10-07 | 蒋浩亮 | Pressure adjustable safety valve |
| CN201954062U (en) * | 2011-01-21 | 2011-08-31 | 蚌埠方正气体净化设备有限公司 | Non-balance-valve rod type gas pressure maintenance valve |
| CN203940107U (en) * | 2014-07-14 | 2014-11-12 | 浙江日新电气有限公司 | A kind of gas-liquid separator valve with warning function |
| CN204784897U (en) * | 2015-05-06 | 2015-11-18 | 成都华气厚普机电设备股份有限公司 | Adjustable relief valve |
-
2015
- 2015-05-06 CN CN201510225296.1A patent/CN104791529B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104791529A (en) | 2015-07-22 |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 610041 China (Sichuan) pilot Free Trade Zone, No.3, floor 11, building 6, no.599, shijicheng South Road, Chengdu high tech Zone Patentee after: Houpu clean energy Co.,Ltd. Address before: 610041 D, Tianfu Software Park, 216 century South Road, Chengdu hi tech Zone, Sichuan, China Patentee before: CHENGDU HUAQI HOUPU HOLDING Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No.3, 11th floor, building 6, no.599, shijicheng South Road, Chengdu hi tech Zone, China (Sichuan) pilot Free Trade Zone, Chengdu, Sichuan 610041 Patentee after: Houpu clean energy (Group) Co.,Ltd. Address before: 610041 China (Sichuan) pilot Free Trade Zone No.3, 11th floor, building 6, no.599, shijicheng South Road, Chengdu high tech Zone Patentee before: Houpu clean energy Co.,Ltd. |