CN102678981B - Safety check - Google Patents
Safety check Download PDFInfo
- Publication number
- CN102678981B CN102678981B CN201210059157.2A CN201210059157A CN102678981B CN 102678981 B CN102678981 B CN 102678981B CN 201210059157 A CN201210059157 A CN 201210059157A CN 102678981 B CN102678981 B CN 102678981B
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- China
- Prior art keywords
- pin
- joint pin
- valve body
- hole
- connection hole
- 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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Links
- 238000003780 insertion Methods 0.000 claims abstract description 35
- 230000037431 insertion Effects 0.000 claims abstract description 35
- 239000012530 fluid Substances 0.000 claims abstract description 16
- 239000011148 porous material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- Check Valves (AREA)
Abstract
The invention provides a kind of safety check, the internal pressure of valve body can be discharged into outside when safeguarding etc., can reliably prevent joint pin to fly out outside.Safety check comprises: valve body (4), and it has inflow entrance and the outflow opening of fluid, has valve seat (5) in inflow entrance side; Pin support (9), it is formed in the inner side of valve body (4), supporting hinge pin (10); Pin insertion hole (11), it is formed at pin support (9), inserts for joint pin (10); Spool (15), it is rotatably installed on joint pin (10) by swing arm (14), abuts with the valve seat (5) of valve body (4); Ft connection hole (18), it is made up of the earth pressure release hole (16) and pin ft connection hole (17) being communicated with the inside of valve body (4) and pin insertion hole (11) part.
Description
Technical field
The present invention relates to a kind of safety check, particularly relate to and a kind ofly the internal pressure of valve body can be discharged into outside when safeguarding and waiting, reliably prevent joint pin to fly out the safety check of outside.
Background technique
Usually, adopt be arranged on pipe arrangement middle part, for being limited in the safety check of the liquid stream of the fluid of pipe arrangement internal flow along a direction.
And, as this kind of safety check, disclosed following technology: such as in the check valve in the past, spool is rotatably located in valve cap in the mode left under the state abutted with the valve seat in valve cap, the bearing object utilizing this hinge part and be detachably located at valve cap forms bearing portion, forms this bearing portion (such as with reference to patent documentation 1) by spheroid and the bowl-shape concavity portion that accepts this spheroid.
Prior art document
Patent documentation
Patent documentation 1: the real public clear 62-024874 publication of Japan
But, in the safety check of above-mentioned patent documentation 1, utilize the bearing portion be made up of spheroid and bowl-shape concavity portion rotatably to support spool, but usually utilize joint pin rotatably to support spool.When utilizing joint pin to support spool by this way, usually in the using process of safety check, in order to prevent joint pin from coming off, after joint pin has been installed, tightening connector, thus joint pin is enclosed.
In this kind of safety check, safeguard safety check etc. in situation, sometimes unload connector.Under these circumstances, the internal pressure of safety check acts on the insertion end of joint pin, in order to prevent the joint pin when having unloaded connector to fly out outside, is removed completely by the pressure of the pipe arrangement inside containing safety check in advance.But in order to improve Security when safeguarding further, require when having unloaded connector, even if having pressure at the internal residual of safety check, joint pin also can not fly out outside.Particularly in areas such as Europe, when being defined in above-mentioned maintenance as standard, joint pin can not fly out, and grows to even greater heights in the world to this requirement.
Summary of the invention
The present invention makes in view of the above problems, and object is to provide a kind of can be discharged into outside when safeguarding and waiting by the internal pressure of valve body, reliably prevents joint pin to fly out the safety check of outside.
In order to achieve the above object, the feature of the safety check of the invention of technological scheme 1 is, it comprises: valve body, and it has inflow entrance and the outflow opening of fluid, has valve seat in above-mentioned inflow entrance side; Pin support, it is formed in the inner side of above-mentioned valve body, supporting hinge pin; Pin insertion hole, it is formed at above-mentioned pin support, inserts for above-mentioned joint pin; Spool, it is rotatably installed on above-mentioned joint pin by swing arm, abuts with the valve seat of above-mentioned valve body; Ft connection hole, it is communicated with the inside of above-mentioned valve body and above-mentioned pin insertion hole part.
The invention of technological scheme 2, on the basis of technological scheme 1, is characterized in that, said external intercommunicating pore has: pin ft connection hole, and its axial direction along above-mentioned joint pin extends, and is connected with the outside of the above-mentioned pin insert port side of above-mentioned joint pin; Earth pressure release hole, on its side face being formed in above-mentioned joint pin and on the position corresponding with between the end face at the base end part place of above-mentioned swing arm and the side of above-mentioned pin support, this earth pressure release hole is connected with above-mentioned pin ft connection hole.
The invention of technological scheme 3 is on the basis of technological scheme 2, it is characterized in that, said external intercommunicating pore also has following earth pressure release hole, on the side face that this earth pressure release hole is formed in above-mentioned joint pin and on the position corresponding with between the other end at the base end part place of above-mentioned swing arm and the side of above-mentioned pin support, this earth pressure release hole is connected with above-mentioned pin ft connection hole.
The invention of technological scheme 4 is on the basis of technological scheme 2, it is characterized in that, said external intercommunicating pore also has following earth pressure release hole, on the side face that this earth pressure release hole is formed in above-mentioned joint pin and in the axial direction from the position of the position deviation corresponding between other end and the side of above-mentioned pin support with the base end part place of above-mentioned swing arm, this earth pressure release hole is connected with above-mentioned pin ft connection hole.
The invention of technological scheme 5, on the basis of technological scheme 1, is characterized in that, said external intercommunicating pore is formed as directly being communicated with the inside of above-mentioned valve body and above-mentioned pin insertion hole.
Adopt the invention of technological scheme 1, owing to arranging the ft connection hole be communicated with pin insertion hole part the inside of valve body, therefore, it is possible to safeguarding in the situations such as safety check situation, the internal pressure of valve body is discharged into outside via ft connection hole, make the internal pressure of valve body can not act on the insertion end of joint pin, can reliably prevent joint pin to fly out outside.Therefore, it is possible to guarantee Security when safeguarding.
Adopt the invention of technological scheme 2, ft connection hole has: pin ft connection hole, and its axial direction along joint pin extends, and is connected with the outside of the pin insert port side of joint pin; Earth pressure release hole, on its side face being formed in joint pin and with the end face at the base end part place of swing arm with sell on position corresponding between the side of support, this earth pressure release hole is connected with pin ft connection hole, therefore, it is possible to utilize the pin ft connection hole of joint pin and earth pressure release hole that the internal pressure of valve body is discharged into outside, the internal pressure of valve body can not be made to act on the insertion end of joint pin, can reliably prevent joint pin to fly out outside.
Adopt the invention of technological scheme 3, ft connection hole is made also to have following earth pressure release hole, on the side face that this earth pressure release hole is formed in joint pin and with the other end at the base end part place of swing arm with sell on position corresponding between the side of support, this earth pressure release hole is connected with pin ft connection hole, therefore, it is possible to utilize the pin ft connection hole of joint pin and each earth pressure release hole that the internal pressure of valve body is discharged into outside, the internal pressure of valve body can not be made to act on the insertion end of joint pin, can reliably prevent joint pin to fly out outside.
Adopt the invention of technological scheme 4, ft connection hole is made also to have following earth pressure release hole, on the side face that this earth pressure release hole is formed in joint pin and in the axial direction from the position of the position deviation corresponding between other end and the side of pin support with the base end part place of swing arm, this earth pressure release hole is connected with pin ft connection hole, therefore, it is possible to utilize the pin ft connection hole of joint pin and earth pressure release hole that the internal pressure of valve body is discharged into outside, the internal pressure of valve body can not be made to act on the insertion end of joint pin, can reliably prevent joint pin to fly out outside.And, due to mineralization pressure release hole on the position of staggering in the axial direction, even if therefore when joint pin departs from the axial direction, a certain earth pressure release hole also can be made at the end face at the base end part place with swing arm and sell on position corresponding between the side of support.
Adopt the invention of technological scheme 5, because ft connection hole shape becomes the inside and pin insertion hole being directly communicated with valve body, therefore, it is possible to utilize ft connection hole that the internal pressure of valve body is discharged into outside via pin insertion hole, the internal pressure of valve body can not be made to act on the insertion end of joint pin, can reliably prevent joint pin to fly out outside.
Accompanying drawing explanation
Fig. 1 is the longitudinal section of the mode of execution representing safety check of the present invention.
Fig. 2 is the sectional elevation of the joint pin part of the mode of execution representing safety check of the present invention.
Fig. 3 is the sectional elevation of another example in the ft connection hole represented in the mode of execution of safety check of the present invention.
Fig. 4 is the sectional elevation of the another example in the ft connection hole represented in the mode of execution of safety check of the present invention.
Fig. 5 is the explanatory drawing representing the state that the pressure relief opening in the mode of execution of safety check of the present invention departs from the axial direction.
Fig. 6 is the explanatory drawing representing the state that the pressure relief opening in the mode of execution of safety check of the present invention departs from the axial direction.
Fig. 7 is the sectional elevation of another example in the earth pressure release hole represented in the mode of execution of safety check of the present invention.
Fig. 8 is the sectional elevation of another example in the ft connection hole represented in the mode of execution of safety check of the present invention.
Embodiment
Below, the mode of execution of safety check of the present invention is described with reference to accompanying drawing.
Fig. 1 and Fig. 2 represents the mode of execution of safety check of the present invention.
Safety check 1 of the present invention has valve body 4, and this valve body 4 possesses inflow entrance 2 and the outflow opening 3 of fluid, is formed with the valve seat 5 outstanding to the inside of valve body 4 at the inner end of the inflow entrance 2 of valve body 4.Be formed with opening 6 on the top of valve body 4, utilize on the top of valve body 4 bolt 8 that lid 7 for closing openings 6 is installed.
In addition, as shown in Figure 2, pin support 9,9 is formed with in the inner upper both sides of the inflow entrance 2 of valve body 4 so that mode facing is each other outstanding respectively.In a square cotter support 9, be formed with the pin insertion hole 11 inserted from the outside of valve body 4 for joint pin 10, in another square cotter support 9, be formed with the pin bearing hole 12 of the front end of storage joint pin 10.Be formed with internal thread 19 in the inner side of pin insertion hole 11, connector 13 is screwed into this pin insertion hole 11 via the sealing component 20 of ring-type.
The base end part 21 remaining on the swing arm 14 between pin support 9 is rotatably supported on columned joint pin 10, utilizes bolt 8 to be provided with the spool 15 that can contact with valve seat 5 freely or separate at the front end of swing arm 14.In addition, the neighbouring representation of the base end part 21 in Fig. 1 be outward appearance.
In addition, in the present embodiment, on the side face of joint pin 10 and with the end face of pin insertion hole 11 side in the base end part 21 of swing arm 14 with sell on position corresponding between the side of support 9, the earth pressure release hole 16 diametrically run through is equipped with.In addition, be equipped with pin ft connection hole 17 at the center of joint pin 10 in the mode extended in the axial direction, this pin ft connection hole 17 is connected with earth pressure release hole 16, and is connected with the outside of pin insertion hole 11 side of joint pin 10.Further, this earth pressure release hole 16 and pin ft connection hole 17 is utilized to form ft connection hole 18 of the present invention.
In addition, as another example in ft connection hole 18, such as also can be as shown in Figure 3, on the side face of joint pin 10 and on the position corresponding with between the both ends of the surface in the base end part 21 of swing arm 14 and each side of selling support 9, be equipped with 2 earth pressure release holes 16a, 16b respectively, be equipped with pin ft connection hole 17 at the center of joint pin 10, this pin ft connection hole 17 is connected with each earth pressure release hole 16, and is connected with the outside of the pin insert port side of joint pin 10.In addition, as shown in Figure 4,2 earth pressure releases hole 16a, 16b can also be formed in joint pin 10, the position on the axial direction of joint pin 10 of formation each earth pressure release hole 16a, 16b that stagger.Namely, joint pin 10 in use likely moves the total length of joint pin 10 and the amount from the bottom of pin bearing hole 12 to the difference of the distance of the end face of connector 13 in the axial direction, but by forming each earth pressure release hole 16a with staggering in the axial direction in the above described manner, the position of 16b, when joint pin 10 moves to pin bearing hole 12 side, the earth pressure release of pin insertion hole 11 side with hole 16a between the end face of the base end part 21 of swing arm 14 and the side of pin support 9, when joint pin 10 moves to pin insertion hole 11 side, sell the earth pressure release hole 16b of bearing hole 12 side between the end face of the base end part 21 of swing arm 14 and the side of pin support 9, regardless of joint pin 10 movement in the axial direction, earth pressure release hole 16a can be made, 16b is between the end face and the side of pin support 9 of the base end part 21 of swing arm 14.
Next, the effect of present embodiment is described.
First, when assembling safety check 1 in present embodiment, spool 15 is configured in valve body 4 inside regulation position state under, insert joint pin 10 from pin insertion hole 11.Further, make joint pin 10 through the base end part 21 of swing arm 14, connector 13 is tightened, thus close pin insertion hole 11.In this condition, spool 15 is kept by swing arm 14 with the state contacted with valve seat 5.Further, by being arranged on valve body 4 by lid 7 with bolt 8, the opening 6 of lid 7 closed valve 4 is utilized.
The safety check 1 assembled in the above described manner is arranged in the pipe arrangement of regulation, the fluid such as liquid, gas is flowed in this pipe arrangement, thus make fluid flow into from the inflow entrance 2 of safety check 1 and spool 15 is swung, make direction of flow outflow opening 3 thus.
Further, when unloading connector 13 because maintenance waits, when having unloaded connector 13, the pressure of the inside of valve body 4 has been discharged to the outside from pin insertion hole 11 via earth pressure release hole 16 and pin ft connection hole 17.Therefore, the pressure of the inside of valve body 4 can not act on pin support 9 side of joint pin 10, be more specifically pin bearing hole 12, and joint pin 10 can not fly out outside under the effect of the internal pressure of valve body 4.
Now or in the using process of safety check 1, joint pin 10 departs from sometimes in the axial direction, as shown in Figure 5, such as when joint pin 10 to pin insertion hole 11 lateral deviation from, fluid is hindered to flow to earth pressure release hole 16 from the inside of valve body 4, but the fast part of rate of flow of fluid meets the chamfered part 16c of pin bearing hole 12 side in earth pressure release hole 16, thus produce the power entering joint pin 10 to pin bearing hole 12 layback.On the other hand, as shown in Figure 6, when joint pin 10 to pin bearing hole 12 lateral deviation from, fluid is hindered to flow to earth pressure release hole 16 from the inside of valve body 4, but the fast part of rate of flow of fluid meets the chamfered part 16c of pin insertion hole 11 side in earth pressure release hole 16, thus produce the power to pin insertion hole 11 thruster pressure joint pin 10.Therefore, even if when joint pin 10 departs from the axial direction, also to utilize from the inside of valve body 4 to the flowing of the fluid in earth pressure release hole 16 to eliminate joint pin 10 departing from the axial direction, earth pressure release hole 16 can be utilized reliably to be communicated with the inside and outside of valve body 4 with pin ft connection hole 17.In addition, the size of chamfered part 16c is preferably roughly more than C1.
In addition, as shown in Figure 7, also can form large-diameter portion 16d, the opening area of the earth pressure release hole 16 shown in Fig. 2 to Fig. 4 on the side face of joint pin 10 is formed larger by this large-diameter portion 16d.By forming in the above described manner, even if when joint pin 10 departs from the axial direction, also the circulation path of fluid can be guaranteed, and the part that rate of flow of fluid is fast when joint pin 10 departs from shown in above-mentioned Fig. 5 or Fig. 6 encounters above-mentioned chamfered part and the such effect of power produced to pin insertion hole 11 thruster pressure joint pin 10 puts on large-diameter portion 16d, can utilize from the inside of valve body 4 to the flowing of the fluid in earth pressure release hole 16 to eliminate joint pin 10 departing from the axial direction.
As mentioned above in the present embodiment, the ft connection hole 18 be made up of earth pressure release hole 16 and pin ft connection hole 17 is formed in joint pin 10, in the situations such as the situation safeguarding safety check, when unloading connector 13, the internal pressure of valve body 4 can be discharged into outside via ft connection hole 18, so the internal pressure of valve body 4 can not act on the insertion end of joint pin 10, can reliably prevent joint pin 10 to fly out outside.Therefore, it is possible to guarantee Security when safeguarding.
In addition, in embodiments, describe the example of the situation forming ft connection hole 18 in joint pin 10, but such as shown in Figure 8, in valve body 4, form the ft connection hole 18 be communicated with pin insertion hole 11 inside of valve body 4, also can obtain same effect.In this case, also the ft connection hole 18 shown in the mode of execution shown in Fig. 1 to Fig. 7 can be set in the lump.
In addition, also can in the mode of execution shown in Fig. 1 to Fig. 7, at least one party of the side of the end face at base end part 21 place of swing arm 14 or pin support 9, forms the groove arriving joint pin 10 from the inside of valve body 4.By forming groove in the above described manner, even if when the internal flow of the higher fluid of viscosity ratio at pipe arrangement, also the internal pressure of valve body 4 can be discharged into outside via ft connection hole 18.
In addition, the present invention is not limited to above-mentioned mode of execution, can carry out various distortion based on purport of the present invention.
Description of reference numerals
1, safety check; 2, inflow entrance; 3, outflow opening; 4, valve body; 5, valve seat; 6, opening; 7, lid; 8, bolt; 9, support is sold; 10, joint pin; 11, pin insertion hole; 12, bearing hole is sold; 13, connector; 14, swing arm; 15, spool; 16, earth pressure release hole; 17, ft connection hole is sold; 18, ft connection hole; 19, internal thread; 20, sealing component; 21, base end part.
Claims (4)
1. a safety check, is characterized in that, this safety check comprises:
Valve body, it has inflow entrance and the outflow opening of fluid, has valve seat in described inflow entrance side;
Pin support, it is formed in the inner side of described valve body, supporting hinge pin;
Pin insertion hole, it is formed at described pin support, inserts for described joint pin;
Spool, it is rotatably installed on described joint pin by swing arm, abuts with the valve seat of described valve body;
Connector, under the state being inserted with described joint pin, this connector closes described pin insertion hole;
Described safety check also comprises at least one party being communicated with the inside of described valve body and the ft connection hole of described pin insertion hole through the inside of described joint pin or being directly communicated with in the inside of described valve body and the ft connection hole of described pin insertion hole,
When having unloaded described connector, the internal pressure of described valve body is discharged to the outside via described ft connection hole.
2. safety check according to claim 1, is characterized in that,
The described ft connection hole be communicated with through the inside of described joint pin has:
Pin ft connection hole, its axial direction along described joint pin extends, and is connected with the outside of the described pin insert port side of described joint pin;
Earth pressure release hole, on its side face being formed in described joint pin and on the position corresponding with between the end face at the base end part place of described swing arm and the side of described pin support, and is connected with described pin ft connection hole.
3. safety check according to claim 2, is characterized in that,
The described ft connection hole be communicated with through the inside of described joint pin also has following earth pressure release hole, on the side face that this earth pressure release hole is formed in described joint pin and on the position corresponding with between the other end at the base end part place of described swing arm and the side of described pin support, and be connected with described pin ft connection hole.
4. safety check according to claim 2, is characterized in that,
The described ft connection hole be communicated with through the inside of described joint pin also has following earth pressure release hole, on the side face that this earth pressure release hole is formed in described joint pin and in the axial direction on the position of position deviation corresponding between the other end and the side of described pin support at the base end part place with described swing arm, and be connected with described pin ft connection hole.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-050342 | 2011-03-08 | ||
| JP2011050342A JP5785403B2 (en) | 2011-03-08 | 2011-03-08 | Check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102678981A CN102678981A (en) | 2012-09-19 |
| CN102678981B true CN102678981B (en) | 2016-03-02 |
Family
ID=46811336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210059157.2A Active CN102678981B (en) | 2011-03-08 | 2012-03-08 | Safety check |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5785403B2 (en) |
| CN (1) | CN102678981B (en) |
| HK (1) | HK1176670A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534128A (en) * | 2015-02-04 | 2015-04-22 | 上海沪东造船阀门有限公司 | Super-low-temperature spiral opening type check valve for liquefied natural gas carrier |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59180062U (en) * | 1983-05-19 | 1984-12-01 | 株式会社荏原製作所 | non-return valve |
| CN2378592Y (en) * | 1999-01-30 | 2000-05-17 | 新疆石河子八一糖业有限公司 | Non-return valve |
| CN2916296Y (en) * | 2005-03-18 | 2007-06-27 | 刘明 | Check valve |
| CN201521686U (en) * | 2009-09-27 | 2010-07-07 | 安徽省天马泵阀集团有限公司 | Swing check valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080308159A1 (en) * | 2007-06-15 | 2008-12-18 | Stunkard Gerald A | Top entry swing check valve |
-
2011
- 2011-03-08 JP JP2011050342A patent/JP5785403B2/en active Active
-
2012
- 2012-03-08 CN CN201210059157.2A patent/CN102678981B/en active Active
-
2013
- 2013-03-18 HK HK13103347.9A patent/HK1176670A1/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59180062U (en) * | 1983-05-19 | 1984-12-01 | 株式会社荏原製作所 | non-return valve |
| CN2378592Y (en) * | 1999-01-30 | 2000-05-17 | 新疆石河子八一糖业有限公司 | Non-return valve |
| CN2916296Y (en) * | 2005-03-18 | 2007-06-27 | 刘明 | Check valve |
| CN201521686U (en) * | 2009-09-27 | 2010-07-07 | 安徽省天马泵阀集团有限公司 | Swing check valve |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5785403B2 (en) | 2015-09-30 |
| CN102678981A (en) | 2012-09-19 |
| JP2012184838A (en) | 2012-09-27 |
| HK1176670A1 (en) | 2013-08-02 |
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