CN105715838B - Elongate rod relief valve - Google Patents
Elongate rod relief valve Download PDFInfo
- Publication number
- CN105715838B CN105715838B CN201610305026.6A CN201610305026A CN105715838B CN 105715838 B CN105715838 B CN 105715838B CN 201610305026 A CN201610305026 A CN 201610305026A CN 105715838 B CN105715838 B CN 105715838B
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- spool
- valve
- elongate rod
- rod
- valve body
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Safety Valves (AREA)
Abstract
The present invention relates to elongate rod relief valves.Valve body is a cylinder, and bonnet, is sealingly mounted at body top, and bottom cover is sealingly mounted at body base, and bonnet, valve body and bottom cover form the cylinder cavity of a closing；Spool is assemblied in cylinder type intracavitary and can simultaneously move up and down, valve rod lower end connects spool, and valve rod upper end is passed through out of bonnet, central through hole, and the lower end for the elongate rod that valve stem top is vertically arranged with one is connect, the upper end of elongate rod is connected on a supporting rack, and supporting rack is fixedly connected on bonnet,；Bottom cover is equipped with medium high input voltage channel, the inner port face spool bottom of the medium high input voltage channel；Valve body is equipped with medium low pressure output channel, and the inner port of the medium low pressure output channel is located on the side wall of valve body, and when spool remains stationary as, the inner port of medium low pressure output channel is blocked by spool；When spool moves upwards, the inner port of medium low pressure output channel is opened.The present invention is applied widely, and degree of regulation is high.
Description
Technical field
The present invention relates to a kind of relief valve, specifically a kind of elongate rod relief valve belongs to valve arrangement technical field.
Background technology
With industrial development and the progress of science and technology, people are more and more to the concern of safety problem, it is desirable that also higher and higher.
In various occasions to relief valve（Safety valve）Use also increasingly pay attention to.
The relief valve being frequently used at present mainly has explosion chip, spring, explosion needle-like pressure release butterfly valve and pilot-operated type
Plunger valve etc., they all have respective advantage and disadvantage：1st, explosion chip cannot be reused, and easy fatigue causes during poor quality
Failure is replaced cumbersome；2nd, spring load is big with flap raising variation, and performance action is influenced greatly by high temperature；3rd, explosion needle
The systematic comparison of type pressure release butterfly valve seal is fragile, is easy to cause leakage, and pressure release trigger mechanism is excessively complicated, and precision is not high, into
Ben Taigao；4th, pilot-operated type plunger valve is considerably complicated, and is connected directly with main valve, has using limitation, is not suitable for high temperature and low
It has a meeting, an audience, etc. well under one's control conjunction.
Invention content
It is an object of the present invention to overcome the shortcomings of the prior art and provide a kind of elongate rod relief valve, structures
Simply, compact, reasonable, applied widely, degree of regulation is high, reusable, and live part exchanging is convenient, you can individually to make
With again can be used cooperatively with any kind of main valve.
According to technical solution provided by the invention：Elongate rod relief valve, it is characterised in that：Including valve body, bonnet, bottom
Lid, spool, valve rod and elongate rod, the valve body are a cylinder, and the bonnet, is sealingly mounted at body top, the bottom cover
Body base is sealingly mounted at, bonnet, valve body and bottom cover form the cylinder cavity of a closing；The spool is assemblied in circle
Cylinder-type intracavitary can simultaneously move up and down, and the valve rod lower end connects spool, and valve rod upper end is worn out of bonnet, central through hole
It crosses, the lower end for the elongate rod that valve stem top is vertically arranged with one is connect, and the upper end of the elongate rod is connected on a supporting rack, institute
Supporting rack is stated to be fixedly connected on bonnet,；The bottom cover is equipped with medium high input voltage channel, the medium high input voltage channel
Inner port face spool bottom, the high-pressure medium of input applies pressure to spool bottom, and spool is again by valve rod to elongate rod
Apply pressure；The valve body is equipped with medium low pressure output channel, and the inner port of the medium low pressure output channel is located at valve body
On side wall, when the high-pressure medium insufficient pressure of input is so that during elongate rod unstability, spool remains stationary as, medium low pressure output channel
Inner port blocked by spool；When the pressure of high-pressure medium is enough to make elongate rod unstability, spool moves upwards, medium low pressure
The inner port of output channel is opened, and medium high input voltage channel is connected with medium low pressure output channel, realizes pressure release.
As a further improvement on the present invention, the inner hub location of the bottom cover is equipped with a cylinder boss, the spool
Lower central be equipped with a cylindrical hole, cylinder boss sealing is slidedly assemblied in the cylindrical hole；The axis of the cylinder boss
Inlet channel is equipped with to center, the external port of the inlet channel is used to connect air source；The stem lower portion can be with institute equipped with one
The seal head that cylindrical hole sealing is slidably matched is stated, when the non-unstability of elongate rod, the seal head lower face and the cylinder boss
Upper surface is in sealing contact, and the inner port of inlet channel is blocked；When elongate rod unstability, the seal head lower face with it is described
Cylinder boss upper surface disengages, and the inner port of inlet channel is opened, and gas enters cylindrical hole by inlet channel；The cylinder
Hole is connected with the inner cavity of spool, and the internal diameter of cylindrical hole is less than the internal diameter of valve core cavity, and the valve core cavity side wall is equipped with
Several ventholes being evenly distributed, the spool outer peripheral sidewall are equipped with an annular outgassing groove, several ventholes with
Annular outgassing groove connection；The body wall is equipped with the inner port company of outlet passageway, the annular outgassing groove and outlet passageway
Logical, the external port of the outlet passageway is used to connect the gas source interface of main valve executing agency.
As a further improvement on the present invention, support frame as described above includes supporting rod, connecting plate, locking nut, fixing nut
And fixing bolt, the supporting rod lower thread are fastened on bonnet, the connecting plate is mounted on post upper simultaneously
Be locked with locking nut, the fixing bolt is screwed on connecting plate and is locked with fixing nut, the elongate rod it is upper
End is connected to the lower end of the fixing bolt.
As a further improvement on the present invention, the lower part of the cylinder cavity is equipped with a ring-shaped step, under the spool
Portion is equipped with a shoulder to match with ring-shaped step.
As a further improvement on the present invention, the first wound gasket, the bottom cover are clamped between the bonnet, and valve body
The second wound gasket is clamped between valve body.
As a further improvement on the present invention, it is first close that several are equipped between the spool peripheral surface and valve interior wall face
Seal.
As a further improvement on the present invention, it is provided with second between the cylinder boss peripheral surface and cylindrical hole internal face
Sealing ring.
As a further improvement on the present invention, the seal head lower face is installed with third sealing ring.
As a further improvement on the present invention, the spool upper surface is installed with the 4th sealing ring.
As a further improvement on the present invention, the valve rod lower end is connected through a screw thread with spool.
As a further improvement on the present invention, the valve stem top center is equipped with location hole, the fixing bolt lower face
Center is equipped with location hole, and the upper and lower side of the elongate rod is respectively placed in location hole.
As a further improvement on the present invention, the external port of the medium high input voltage channel and medium low pressure output channel
External port be tapered tread interface.
Compared with prior art, the present invention it has the following advantages：
1）, the present invention make full use of the Euler law of elongate rod unstability, using the structure for making elongate rod both ends stress, positioning
Property is good, and accuracy can reach ± more than 0.01MPa.
2）, present invention processing it is simple, concentricity is high, and guidance quality is good, and sealing position avoids the circular cone on valve interior wall completely
Threaded hole, it is ensured that spool can seal during the motion.
3）, the present invention be used alone or with main valve be used cooperatively be attained by pressure release purpose, it is ensured that it is small in medium
Also smoothly it can push or close valve under pressure difference open, reach onsite application requirement.
4）, delicate structure of the present invention, the external port of medium high input voltage channel and medium low pressure output channel is circular cone
Hickey not only facilitates and is connect with the fast and easy of other equipment, but also relief valve can be made to be avoided far from medium by high temperature
Medium influence.
5）, each part in the present invention all carry out modularized production, scene does not have to dismounting valve and part can be replaced,
It is easy to maintenance, the time between overhauls(TBO) is greatly shortened, reduces cost.
Description of the drawings
Fig. 1 is structure diagram when relief valve of the embodiment of the present invention is closed.
Fig. 2 is structure diagram when relief valve of the embodiment of the present invention is opened.
Specific embodiment
With reference to specific drawings and examples, the invention will be further described.
As shown in the figure：Elongate rod relief valve in embodiment is mainly by valve body 1, bonnet, 4, bottom cover 7, spool 2, valve rod 3
It being formed with 10 grade of elongate rod, the valve body 1 is a cylinder, and the bonnet, 4 is mounted on 1 top of valve body by bolt seal,
The bottom cover 7 is mounted on 1 bottom of valve body by bolt seal, and bonnet, 4, valve body 1 and bottom cover 7 form the cylinder of a closing
Cavity；The spool 2 is assemblied in cylinder type intracavitary and can simultaneously move up and down, 3 lower end of the valve rod connection spool 2, on valve rod 3
End is passed through out of bonnet, 4 central through hole, and 3 top of valve rod is connect with the lower end of elongate rod 10 that one is vertically arranged, described thin
The upper end of stock 10 is connected on a supporting rack, and support frame as described above is fixedly connected on bonnet, 4；The bottom cover 7, which is equipped with, to be situated between
Matter high input voltage channel 14,2 bottom of inner port face spool of the medium high input voltage channel 14, the high-pressure medium of input is to valve
2 bottom of core applies pressure, and spool 2 applies pressure by valve rod 3 to elongate rod 10 again；It is defeated that the valve body 1 is equipped with medium low pressure
Go out channel 15, the inner port of the medium low pressure output channel 15 is located on the side wall of valve body 1, when input high-pressure medium pressure not
When being enough to make 10 unstability of elongate rod, spool 2 remains stationary as, and the inner port of medium low pressure output channel 15 is blocked by spool 2；When
When the pressure of high-pressure medium is enough to make 10 unstability of elongate rod, spool 2 moves upwards, and the inner port of medium low pressure output channel 15 is beaten
It opens, medium high input voltage channel 14 is connected with medium low pressure output channel 15, realizes pressure release.
As shown in Figure 1 and Figure 2, in the present embodiment, the inner hub location of the bottom cover 7 is equipped with a cylinder boss 7a, described
The lower central of spool 2 is equipped with a cylindrical hole, and the cylinder boss 7a sealings are slidedly assemblied in the cylindrical hole；The cylinder is convex
The axial centre of platform 7a is equipped with inlet channel 16, and the external port of the inlet channel 16 is used to connect air source；3 lower part of valve rod
The seal head 3a being slidably matched can be sealed with the cylindrical hole equipped with one, when 10 non-unstability of elongate rod, under the seal head 3a
End face and the cylinder boss 7a upper surfaces are in sealing contact, and the inner port of inlet channel 16 is blocked；When 10 unstability of elongate rod
When, the seal head 3a lower faces are disengaged with the cylinder boss 7a upper surfaces, and the inner port of inlet channel 16 is opened, gas
Body enters cylindrical hole by inlet channel 16；The cylindrical hole is connected with the inner cavity of spool 2, and the internal diameter of cylindrical hole is less than spool
The internal diameter of 2 inner cavities, 2 intracavity sidewall of spool are equipped with several venthole 2b being evenly distributed, 2 peripheral side of spool
Wall is equipped with an annular outgassing groove 2c, several ventholes 2b is connected with annular outgassing groove 2c；1 side wall of valve body is equipped with
Outlet passageway 17, the annular outgassing groove 2c are connected with the inner port of outlet passageway 17, and the external port of the outlet passageway 17 is used
In the gas source interface of connection main valve executing agency.
As shown in Figure 1 and Figure 2, in the present embodiment, support frame as described above mainly by supporting rod 5, connecting plate 6, locking nut 13,
Fixing nut 12 and fixing bolt 11 form, and 5 lower thread of supporting rod is fastened on bonnet, 4, the connecting plate 6
Be locked mounted on 5 upper end of supporting rod and with locking nut 13, the fixing bolt 11 be screwed on connecting plate 6 and with fix
Nut 12 is locked, and the upper end of the elongate rod 10 is connected to the lower end of the fixing bolt 11.
As shown in Figure 1 and Figure 2, in the present embodiment, the lower part of the cylinder cavity is equipped with a ring-shaped step 1a, the valve
2 lower part of core is equipped with a shoulder 2a to match with ring-shaped step 1a.Such respective outer side edges can promote spool 2 and valve body
Sealing performance between 1, and concentricity is high, and guidance quality is good.
As shown in Figure 1 and Figure 2, in the present embodiment, the first wound gasket 8.1, institute are clamped between the bonnet, 4 and valve body 1
It states and the second wound gasket 8.2 is clamped between bottom cover 7 and valve body 1.If it is equipped between 2 peripheral surface of spool and 1 internal face of valve body
Dry the first sealing ring 9.1.The second sealing ring 9.2 is provided between the cylinder boss 7a peripheral surfaces and cylindrical hole internal face.
The seal head 3a lower faces are installed with third sealing ring 9.3.2 upper surface of spool is installed with the 4th sealing ring 9.4.These
The effect of sealing element is all the sealing performance for lifting means.
As shown in Figure 1 and Figure 2, in the present embodiment, 3 lower end of valve rod is connected through a screw thread with spool 2, so that valve
The cooperation accuracy for being connected with certain fine adjustment function, being conducive between conforming member of bar 3 and spool 2.
As shown in Figure 1 and Figure 2, in the present embodiment, 3 top center of valve rod is equipped with location hole, under the fixing bolt 11
End face center is equipped with location hole, and the upper and lower side of the elongate rod 10 is respectively placed in location hole.Such structure is conducive to elongated
The assembling of bar 10.
As shown in Figure 1 and Figure 2, in the present embodiment, external port and medium the low pressure output of the medium high input voltage channel 14
The external port of channel 15 is tapered tread interface, and the present invention is not only facilitated to be connect with the fast and easy of other equipment in this way, and
And can be connected through a screw thread makes relief valve avoid being influenced by high-temperature medium far from medium.
The operation principle and the course of work of the present invention is as follows：
In the external port connecting pipe of the medium high input voltage channel 14 or preceding higher-pressure region of main valve, when pressure medium is less than
During the power that elongate rod 10 can bear, relief valve remains turned-off（State is as shown in Figure 1）；When pressure medium is higher than 10 institute of elongate rod
During the power that can be born, elongate rod 10 will buckling deformation, spool 2 and valve rod 3 can move upwards simultaneously, and medium will enter valve
It is interior, it is then discharged from the external port of medium low pressure output channel 15, relief valve is opened at this time（State is as shown in Figure 2）.
When the present invention is used cooperatively with main valve, the external port of inlet channel 16 is connected with air source, outside outlet passageway 17
Port is connect with the gas source interface of main valve executing agency, when spool 2 and valve rod 3 move upwards, the inner port of inlet channel 16
It opens, high pressure gas can be discharged from outlet passageway 17, and pushing executing mechanism drives main valve work.
Claims (9)
1. elongate rod relief valve, it is characterised in that：Including valve body（1）, bonnet,（4）, bottom cover（7）, spool（2）, valve rod（3）With
Elongate rod（10）, the valve body（1）For a cylinder, the bonnet,（4）It is sealingly mounted at valve body（1）Top, the bottom cover
（7）It is sealingly mounted at valve body（1）Bottom, bonnet,（4）, valve body（1）And bottom cover（7）Form the cylinder cavity of a closing；
The spool（2）Being assemblied in cylinder type intracavitary can simultaneously move up and down, the valve rod（3）Lower end connects spool（2）, valve rod
（3）Upper end is from bonnet,（4）Central through hole in pass through, valve rod（3）Top and an elongate rod being vertically arranged（10）Lower end
Connection, the elongate rod（10）Upper end be connected on a supporting rack, support frame as described above is fixedly connected on bonnet,（4）On；Institute
State bottom cover（7）It is equipped with medium high input voltage channel（14）, the medium high input voltage channel（14）Inner port face spool（2）
Bottom, the high-pressure medium of input is to spool（2）Bottom applies pressure, spool（2）Pass through valve rod again（3）To elongate rod（10）Apply
Pressure；The valve body（1）It is equipped with medium low pressure output channel（15）, the medium low pressure output channel（15）Inner port be located at
Valve body（1）Side wall on, when the high-pressure medium insufficient pressure of input is so that elongate rod（10）During unstability, spool（2）It remains stationary as,
Medium low pressure output channel（15）Inner port by spool（2）It blocks；When the pressure of high-pressure medium is enough to make elongate rod（10）
During unstability, spool（2）It moves upwards, medium low pressure output channel（15）Inner port open, medium high input voltage channel（14）
With medium low pressure output channel（15）Connection is got up, and realizes pressure release；
The bottom cover（7）Inner hub location be equipped with a cylinder boss（7a）, the spool（2）Lower central be equipped with one circle
Post holes, the cylinder boss（7a）Sealing is slidedly assemblied in the cylindrical hole；The cylinder boss（7a）Axial centre be equipped with
Inlet channel（16）, the inlet channel（16）External port for connecting air source；The valve rod（3）It lower part can be with institute equipped with one
State the seal head that cylindrical hole sealing is slidably matched（3a）, work as elongate rod（10）During non-unstability, the seal head（3a）Lower face with
The cylinder boss（7a）Upper surface is in sealing contact, by inlet channel（16）Inner port block；Work as elongate rod（10）Unstability
When, the seal head（3a）Lower face and the cylinder boss（7a）Upper surface disengages, inlet channel（16）Inner port
It opens, gas is by inlet channel（16）Into cylindrical hole；The cylindrical hole and spool（2）Inner cavity connection, and cylindrical hole
Internal diameter is less than spool（2）The internal diameter of inner cavity, the spool（2）Intracavity sidewall is equipped with several ventholes being evenly distributed
（2b）, the spool（2）Outer peripheral sidewall is equipped with an annular outgassing groove（2c）, several ventholes（2b）With annular outgassing groove
（2c）Connection；The valve body（1）Side wall is equipped with outlet passageway（17）, the annular outgassing groove（2c）With outlet passageway（17）'s
Inner port connects, the outlet passageway（17）External port be used to connect the gas source interface of main valve executing agency.
2. elongate rod relief valve as described in claim 1, it is characterised in that：Support frame as described above includes supporting rod（5）, connecting plate
（6）, locking nut（13）, fixing nut（12）And fixing bolt（11）, the supporting rod（5）Lower thread is fastened on
Valve deck（4）On, the connecting plate（6）Mounted on supporting rod（5）Simultaneously use locking nut in upper end（13）It is locked, the fixed spiral shell
Bolt（11）It is screwed on connecting plate（6）It goes up and uses fixing nut（12）Locking, the elongate rod（10）Upper end be connected to it is described solid
Determine bolt（11）Lower end.
3. elongate rod relief valve as described in claim 1, it is characterised in that：The lower part of the cylinder cavity is equipped with an annular
Step（1a）, the spool（2）Lower part is equipped with one and ring-shaped step（1a）The shoulder to match（2a）.
4. elongate rod relief valve as described in claim 1, it is characterised in that：The bonnet,（4）With valve body（1）Between clamp
There is the first wound gasket（8.1）, the bottom cover（7）With valve body（1）Between be clamped with the second wound gasket（8.2）.
5. elongate rod relief valve as described in claim 1, it is characterised in that：The spool（2）Peripheral surface and valve body（1）Inner wall
Several first sealing rings are equipped between face（9.1）, the spool（2）Upper surface is installed with the 4th sealing ring（9.4）.
6. elongate rod relief valve as described in claim 1, it is characterised in that：The cylinder boss（7a）Peripheral surface and cylindrical hole
The second sealing ring is provided between internal face（9.2）, the seal head（3a）Lower face is installed with third sealing ring（9.3）.
7. elongate rod relief valve as described in claim 1, it is characterised in that：The valve rod（3）Lower end and spool（2）Pass through spiral shell
Line connects.
8. elongate rod relief valve as claimed in claim 2, it is characterised in that：The valve rod（3）Top center is equipped with location hole,
The fixing bolt（11）Lower face center is equipped with location hole, the elongate rod（10）Upper and lower side be respectively placed in location hole.
9. elongate rod relief valve as described in claim 1, it is characterised in that：The medium high input voltage channel（14）Outer end
Mouth and medium low pressure output channel（15）External port be tapered tread interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610305026.6A CN105715838B (en) | 2016-05-10 | 2016-05-10 | Elongate rod relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610305026.6A CN105715838B (en) | 2016-05-10 | 2016-05-10 | Elongate rod relief valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105715838A CN105715838A (en) | 2016-06-29 |
| CN105715838B true CN105715838B (en) | 2018-06-22 |
Family
ID=56162653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610305026.6A Active CN105715838B (en) | 2016-05-10 | 2016-05-10 | Elongate rod relief valve |
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| Country | Link |
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| CN (1) | CN105715838B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969176A (en) * | 2017-05-18 | 2017-07-21 | 盐城欧润石化设备制造有限公司 | A kind of automatic decompression valve |
| CN106958523B (en) * | 2017-05-20 | 2018-09-21 | 重庆水泵厂有限责任公司 | Diaphragm pump displacement configuration |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4724857A (en) * | 1986-11-17 | 1988-02-16 | Taylor Julian S | Pressure relief valve |
| US5297575A (en) * | 1993-07-30 | 1994-03-29 | Taylor Julian S | In-line high pressure fluid release valve |
| US5727586A (en) * | 1996-12-13 | 1998-03-17 | Taylor; Julian S. | Reclosing collapsible pin pressure relief valve |
| CN103939623A (en) * | 2014-05-05 | 2014-07-23 | 无锡卓尔阀业有限公司 | Ultrahigh pressure steam emptying valve |
| CN105465431A (en) * | 2015-02-28 | 2016-04-06 | 江苏瑞朗博机械设备有限公司 | Modular design and pressure bar destabilizing trigger type relief valve under high pressure working condition |
| CN205745486U (en) * | 2016-05-10 | 2016-11-30 | 无锡斯沃特流体控制技术有限公司 | Elongate rod relief valve |
-
2016
- 2016-05-10 CN CN201610305026.6A patent/CN105715838B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4724857A (en) * | 1986-11-17 | 1988-02-16 | Taylor Julian S | Pressure relief valve |
| US5297575A (en) * | 1993-07-30 | 1994-03-29 | Taylor Julian S | In-line high pressure fluid release valve |
| US5727586A (en) * | 1996-12-13 | 1998-03-17 | Taylor; Julian S. | Reclosing collapsible pin pressure relief valve |
| CN103939623A (en) * | 2014-05-05 | 2014-07-23 | 无锡卓尔阀业有限公司 | Ultrahigh pressure steam emptying valve |
| CN105465431A (en) * | 2015-02-28 | 2016-04-06 | 江苏瑞朗博机械设备有限公司 | Modular design and pressure bar destabilizing trigger type relief valve under high pressure working condition |
| CN205745486U (en) * | 2016-05-10 | 2016-11-30 | 无锡斯沃特流体控制技术有限公司 | Elongate rod relief valve |
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| Publication number | Publication date |
|---|---|
| CN105715838A (en) | 2016-06-29 |
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