CN1987176A - Pressure automatic cut-off valve - Google Patents
Pressure automatic cut-off valve Download PDFInfo
- Publication number
- CN1987176A CN1987176A CN 200610124030 CN200610124030A CN1987176A CN 1987176 A CN1987176 A CN 1987176A CN 200610124030 CN200610124030 CN 200610124030 CN 200610124030 A CN200610124030 A CN 200610124030A CN 1987176 A CN1987176 A CN 1987176A
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- Prior art keywords
- spool
- valve
- valve body
- outlet side
- automatic cut
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Abstract
A valve able to be automatically closed by pressure with high responsive speed is composed of a valve body with top outlet, bottom inlet, funnel-shaped upper cavity and lower cavity, a valve core matched with the inner surface of upper cavity, and a suspending structure in valve body for holding the valve core under top outlet.
Description
Technical field
The present invention relates to valve, particularly a kind of pressure automatic cut-off valve door.
Technical background
Pressure automatic cut-off valve is widely used in water supply line, steam line, on the haulage device and bunkerage of oil gas, the disclosed key name of utility model patent that is ZL89218707.7 with the most approaching prior art of the present invention such as China Patent No. is called the patent of " a kind of impulse force self acting stop valve ", this patent disclosure have the lower chambers that communicates with the water inlet on a kind of valve body, upper chamber that communicates with osculum and spool bore, the water passage hole that the water inlet communicates with lower chambers has a needle that is used to regulate the water passage hole inflow between water inlet and the lower chambers on the valve body.This valve complicated in mechanical structure, application area is little, and reaction velocity is slow, and working life is short.
Summary of the invention
The present invention is a kind of pressure automatic cut-off valve door, and its main purpose is that valve responds speed is fast, and is simple in structure, long service life, and application is wide.
The present invention is achieved through the following technical solutions above-mentioned technical purpose:
The present invention includes valve body and spool, spool is positioned at valve inner, the valve body upside is provided with outlet and flows out valve for fluid, downside is provided with into confession fluid flow valve, outlet side valve body cavity wall at valve is a funnel shape, spool in valve body and outlet side valve body cavity wall are complementary, spool with can form sealing after the outlet side cavity inner wall cooperates, be provided with the hanging structure that is used for spool remained on below the outlet side at valve inner, and spool is to adopt density to make greater than the material of fluid density, makes that can not hinder fluid at normal behaviour in service lower valve core under action of gravity flows through valve.
The present invention considers the described valve complicated in mechanical structure of present prior art, and can only be applied to water or other liquid, and valve can not bear powerful shortcomings such as pressure.What the design adopted is the structure of simple valve pocket and spool, and valve has enough spaces freely to pass through for liquid or the gas carried in the pipeline between normal state lower valve core of opening and valve pocket inwall.Hanging structure is used to prevent that spool from blocking inlet, and under normal operating condition, hanging structure makes spool and inlet keep certain distance, and has upwards movable degrees of freedom.The valve Vertical direction is installed, and the outlet of valve enters the mouth vertically downward vertically upward.When the pipeline that this contrive equipment is installed leaked in outlet one side generation pipeline breaking, the pressure of valve cavity ingress surpassed the outlet port significantly, and pressure difference is greater than the weight of spool, and spool will upwards be pushed export to a side rapidly.Because the inwall in spool and outlet side valve body chamber is complementary, spool and outlet side valve pocket inwall can form sealing after cooperating, and stop breach to continue to leak, and the valve pocket internal pressure is strong more, and the seal degree of spool and outlet side valve pocket inwall is high more.She Ji advantage is that the valve response speed is fast, simple in structure, long service life, can bears high pressure, valve seal degree height, can be applicable to the conveyance conduit of various different fluid like this.
Hanging structure in the above-mentioned pressure automatic cut-off valve door is to be provided with the support that can supply fluid to pass through on the outlet inwall, support is a double layer construction, support is provided with the hole passed through for fluid and the positioning hole of placement positioning bar, described positioning rod is " T " font spool positioning rod, and positioning hole and spool positioning rod are complementary.The upper end of spool positioning rod is slightly larger than the diameter of the positioning hole on the support, and the other end passes positioning hole by outlet fixedlys connected with spool, and fixedly connected mode can be that to weld also can be to be provided with the screw-thread fit that matches to connect on accessory.Spool location bridge is on support, and the downward degrees of freedom of restriction spool keeps the degrees of freedom that moves upward.
The structural advantages of above-mentioned support is that double-deck support can stablize the spool positioning rod, plays the effect of positioning and guiding, and such structure helps accelerating the speed that spool is made a response to accident.When pipeline occurred needing the situation of throttle down, because of the effect of support and spool positioning rod cooperation guiding that the back has, spool can move to Way out rapidly, rapidly throttle down.Such structure can also cooperate multiple difform spool, as frustoconic shape, spherical etc., if guiding then can't accurately seal not.
Hanging structure also can be to be located at unsettled, and the spool support that can allow fluid flow through of spool supported underneath spool, the spool of use be shaped as spheroid.The fluid that spool can not hinder in the pipeline when spool is in vacant state flows through valve, omits the guide structure of spool when using spherical spool to reach automatic-closing valve.Such structural advantages is that the spool overall structure is simpler, reduces production costs greatly.
Hanging structure can also be the vertical guiding groove that is provided with the upper and lower end sealing at the spool chamber inwall, and spool is provided with the guide pad that is complementary with guiding groove.Guiding groove and guide pad provide effect unsettled and guiding for spool, and when pipeline occurred needing the situation of throttle down, spool moved by the direction that guiding groove and guide pad set, apace throttle down.Such structure can also be used multiple difform spool on demand.The fluid that spool can not hinder in the pipeline when spool is in vacant state flows through valve.She Ji purpose is to utilize hanging structure that spool is suspended in the middle of the valve pocket like this, prevents the inlet of spool block valve, can reach the effect of automatic-closing valve again.The hanging structure that uses various different structures is applicable on the different conveyance conduit or equipment.
The employed spool of described pressure automatic cut-off valve is shaped as spherical, frustoconic shape, cone shape or spherical.Difform spool is applicable on different delivering pipes and haulage device, can be according to the difform spool of physical property adapted of fluid.
The valve body of described pressure automatic cut-off valve door is made up of outlet side valve body and inlet side valve body, and the outlet valve body interconnects with the inlet valve body.The Placement of outlet valve body and inlet valve body can be to be provided with the screw thread that matches to be connected on valve body, also can be to use welding manner to connect.The outlet and the ingress of valve body are provided with screw thread so that and the threads engaged on the conveyance conduit, reach the effect of sealing.Such purpose of design is that separately valve body is convenient the accessory of spool and hanging structure assembled, and assembles the opposite side valve body again after the accessory of spool and hanging structure can being assembled in the valve body of a side wherein, forms a complete valve pocket.Such structure greatly reduces the production difficulty, has reduced cost of production.
The utility model contrast prior art has following advantage:
The valve response speed is fast, simple in structure, long service life, can bear high pressure, valve seal degree height, the conveyance conduit that can be applicable to various different fluid and conveying equipment.
Adopt inlet side valve body and outlet side valve body to be combined into valve body, reduce the production of valve, the difficulty of assembling greatly, reduce production cost greatly.
Description of drawings:
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is the structural representation of the embodiment of the invention one;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the structural representation of the embodiment of the invention two;
Fig. 4 is the B-B sectional view of Fig. 3;
Fig. 5 is the structural representation of the embodiment of the invention three;
Fig. 6 is the C-C sectional view of Fig. 5
Fig. 7 is the stereogram of valve body of the present invention;
Embodiment
Embodiment one: as Fig. 1, Fig. 2 and shown in Figure 7, described pressure automatic cut-off valve comprises valve body 1 and spool 16 two large divisions, and spool 16 is positioned at valve body 1 inside, and valve body 1 upside is outlet 4, and downside is inlet 5.Outlet side valve body chamber 2 inwalls are funnel shape, and spool 16 is complementary with outlet side valve body chamber 2 inwalls, can form sealing after outlet side valve body chamber 2 inwalls and spool 16 are complementary, and are provided with the hanging structure that is used for spool 16 remained on below the outlet side in valve body 1 inside.
Described hanging structure comprises the positioning work piece of being located on the outlet inwall 17, " T " font spool positioning rod 18, positioning work piece 17 is a double layer construction, being provided with on positioning work piece can be for the positioning hole 10 of freely through hole 19 of fluid and installation spool positioning rod 18, spool positioning rod 18 passes positioning hole 10 fixedlys connected with spool 16,18 of spool positioning rods on positioning work piece 17 with the positioning work piece pivot bush unit.Spool 16 is a spherical, also can be frustoconic shape, cone shape or spherical, and spool 16 and Placement between the positioning rod 18 can be that to utilize screw-thread fit to be connected also can be welding.Valve body is divided into inlet side valve body 2 and inlet side valve body 3 two-part, and outlet valve lateral body 2 interconnects with inlet side valve body 3, and outlet side valve body 2 can be that the screw thread that cooperatively interacts also can be welding with the Placement of inlet volume valve body 3.
When producing this valve, positioning hole 20 backs that positioning rod 18 is passed on the positioning work piece 17 are connected with spool 16, outlet side valve body 2 and inlet side valve body 3 are linked together again.
This valve is that vertical direction is installed when installing, and valve export 4 enters the mouth 5 down up.Normal state lower valve core 16 is because the effect of positioning rod 18 is in vacant state, and valve can allow fluid freely pass through.When pipeline when outlet 4 one sides of valve occur breaking and leak, the pressure of valve export 4 is less than the pressure of inlet 5, at this time the pressure difference of two ports of valve is greater than the weight of spool, will push export spool 16 to 4 one sides, and allow spool 16 contact with the inwall in outlet side valve body chamber 2, the fluid isolation that the formation sealing will be leaked is in the inboard of valve.
That this invention has is simple in structure, response speed fast, can bear high pressure, the production difficulty is little, cost is low, the characteristics of applied range, long service life, and this device can be applicable on various conveyance conduits such as gas pipe line, aqueduct, oil transport pipeline and the haulage device.Be used to prevent that pipeline breaking from causing the leakage that stores thing, in time prevent potential safety hazard, reduce the harm and the loss that are brought.
Embodiment two: as Fig. 3, Fig. 4 and shown in Figure 7, described pressure automatic cut-off valve comprises valve body 1 and spool 16 two large divisions, and spool 16 is positioned at valve body 1 inside, and valve body 1 upside is outlet 4, and downside is inlet 5.Outlet side valve body chamber 2 inwalls are funnel shape, and spool 16 is complementary with outlet side valve body chamber 2 inwalls, can form sealing after outlet side valve body chamber 2 inwalls and spool 16 are complementary, and are provided with the hanging structure that is used for spool 16 remained on below the outlet side in valve body 1 inside.
The hanging structure that is provided with in valve pocket 1 is a spool support 27 unsettled at spool 16 supported underneath spools, that also can allow fluid flow through.Spool support 27 is provided with the hole of passing through for fluid 20, the spool 16 that this valve uses is spheroidal, valve body 1 is divided into two-part and forms, be divided into oral-lateral valve body 2 and inlet side valve body 3, outlet side valve body 2 interconnects with inlet side valve body 3, and outlet side valve body 2 can be that the screw thread that cooperatively interacts also can be welding with the Placement of inlet volume valve body 3.
This valve is that vertical direction is installed when installing, and valve export 4 enters the mouth 5 down up.Normal state lower valve core 16 is because the effect of spool support 27 is in vacant state, and valve can allow fluid freely pass through.When pipeline when breaking appears in outlet 4 one sides of valve, the pressure of valve export 4 is less than the pressure of inlet 5, at this time the pressure difference of two ports of valve is greater than the weight of spool 16, will push export spool 16 to 4 one sides, and allow spool 16 contact with the inwall in outlet side valve body chamber 2, the fluid isolation that the formation sealing will be leaked is in the inboard of valve.
Embodiment three: as Fig. 5, Fig. 6 and shown in Figure 7, described pressure automatic cut-off valve comprises valve body 1 and spool 16 two large divisions, and spool 16 is positioned at valve body 1 inside, and valve body 1 upside is outlet 4, and downside is inlet 5.Outlet side valve body chamber 2 inwalls are funnel shape, and spool 16 is complementary with outlet side valve body chamber 2 inwalls, can form sealing after outlet side valve body chamber 2 inwalls and spool 16 are complementary, and are provided with the hanging structure that is used for spool 16 remained on below the outlet side in valve body 1 inside.
Described hanging structure is a vertical guiding groove 38 of being located at the sealing of valve pocket 1 inwall upper and lower end, and the spool chamber inwall is provided with two guiding grooves 38 at least, is provided with the guide pad 37 that is complementary with guiding groove 38 on spool 16.Can allow spool 16 in the vertical directions freely move after guiding groove 38 and guide pad 37 combinations, and can not allow spool 16 stop up inlet, can allow fluid freely pass through valve pocket under the normal state.Spool 16 is a spherical, also can be frustoconic shape, cone shape or spherical.
This valve is that vertical direction is installed when installing, and valve export 4 enters the mouth 5 down up.Normal state lower valve core 16 is because the effect of guiding groove and guide pad is in vacant state, and valve can allow fluid freely pass through.When pipeline when breaking appears in outlet 4 one sides of valve, the pressure of valve export 4 is less than the pressure of inlet 5, at this time the pressure difference of two ports of valve is greater than the weight of spool 16, will will push export spool 16 to 4 one sides along guiding groove, and allow spool 16 contact with the inwall in outlet side valve body chamber 2, the fluid isolation that the formation sealing will be leaked is in the inboard of valve.
Claims (6)
1. pressure automatic cut-off valve, comprise valve body and spool, spool is positioned at valve inner, the valve body upside is outlet, downside is inlet, it is characterized in that outlet side valve body cavity wall is a funnel shape, spool and outlet side valve body cavity wall are complementary, and valve inner is provided with the hanging structure that is used for spool is remained on the outlet side below.
2. pressure automatic cut-off valve door according to claim 1, it is characterized in that described hanging structure comprises is located at the support that can pass through for fluid on the outlet inwall, " T " font spool positioning rod, the spool positioning rod passes positioning work piece fixedlys connected with spool, spool location bridge on support with the support pivot bush unit.
3. pressure automatic cut-off valve door according to claim 1 is characterized in that described hanging structure is to be located at spool supported underneath spool spool support unsettled, that also can allow fluid flow through.
4. pressure automatic cut-off valve door according to claim 1 is characterized in that described hanging structure is located at the vertical guiding groove of spool chamber inwall upper and lower end sealing, and spool is provided with the guide pad that is complementary with guiding groove.
5. according to claim 1 or 2 or 3 or 4 described pressure automatic cut-off valve doors, it is characterized in that described spool is spherical, frustoconic shape, cone shape or spherical.
6. pressure automatic cut-off valve door according to claim 1 is characterized in that described valve body is made up of outlet side valve body and inlet side valve body, and outlet side valve body and inlet side valve body interconnect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101240309A CN100429442C (en) | 2006-12-04 | 2006-12-04 | Pressure automatic cut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101240309A CN100429442C (en) | 2006-12-04 | 2006-12-04 | Pressure automatic cut-off valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1987176A true CN1987176A (en) | 2007-06-27 |
| CN100429442C CN100429442C (en) | 2008-10-29 |
Family
ID=38184072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101240309A Expired - Fee Related CN100429442C (en) | 2006-12-04 | 2006-12-04 | Pressure automatic cut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100429442C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575787A (en) * | 2009-08-25 | 2012-07-11 | 空中客车德国运营有限责任公司 | Device for burst pipe safety |
| CN108590574A (en) * | 2018-06-29 | 2018-09-28 | 中国石油化工股份有限公司 | A kind of stage cementing device with packing function |
| CN109114434A (en) * | 2018-09-03 | 2019-01-01 | 蒋晓武 | A kind of gas pipeline leak detecting and alarming device with emergency cut-off |
| CN110886926A (en) * | 2018-09-07 | 2020-03-17 | 李焕然 | Pipeline safety protection device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5265641A (en) * | 1991-08-08 | 1993-11-30 | Anderson James B | Resettable automatic shut-off valve |
| CN2184828Y (en) * | 1994-01-15 | 1994-12-07 | 李援 | Anti-overflow device for drainage pipe block |
| CN1584380A (en) * | 2004-06-13 | 2005-02-23 | 张立 | Safety valve |
| US7171981B2 (en) * | 2004-07-02 | 2007-02-06 | Watersav Enterprises, Llc | Flow control device and system |
-
2006
- 2006-12-04 CN CNB2006101240309A patent/CN100429442C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575787A (en) * | 2009-08-25 | 2012-07-11 | 空中客车德国运营有限责任公司 | Device for burst pipe safety |
| CN102575787B (en) * | 2009-08-25 | 2013-10-30 | 空中客车德国运营有限责任公司 | Device for burst pipe safety |
| US8739825B2 (en) | 2009-08-25 | 2014-06-03 | Airbus Operations Gmbh | Device for burst pipe safety |
| CN108590574A (en) * | 2018-06-29 | 2018-09-28 | 中国石油化工股份有限公司 | A kind of stage cementing device with packing function |
| CN109114434A (en) * | 2018-09-03 | 2019-01-01 | 蒋晓武 | A kind of gas pipeline leak detecting and alarming device with emergency cut-off |
| CN110886926A (en) * | 2018-09-07 | 2020-03-17 | 李焕然 | Pipeline safety protection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100429442C (en) | 2008-10-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081029 Termination date: 20101204 |