CN203757048U - Forced seal ball valve rigidity seal valve seat with stopping and discharging functions - Google Patents
Forced seal ball valve rigidity seal valve seat with stopping and discharging functions Download PDFInfo
- Publication number
- CN203757048U CN203757048U CN201420087479.2U CN201420087479U CN203757048U CN 203757048 U CN203757048 U CN 203757048U CN 201420087479 U CN201420087479 U CN 201420087479U CN 203757048 U CN203757048 U CN 203757048U
- Authority
- CN
- China
- Prior art keywords
- valve seat
- hard
- valve
- seal
- sealing surface
- 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.)
- Expired - Fee Related
Links
- 238000007599 discharging Methods 0.000 title abstract 3
- 238000007789 sealing Methods 0.000 claims abstract description 61
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 239000007789 gas Substances 0.000 description 8
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 description 8
- 239000003566 sealing material Substances 0.000 description 5
- 238000005507 spraying Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 238000005272 metallurgy Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- -1 polytetrafluoroethylene Polymers 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
Abstract
The utility model discloses a forced seal ball valve rigidity seal valve seat with the stopping and discharging functions. A valve body is connected with a valve deck through a stud in a bolting mode. A valve body detection hole is formed in the valve body and connected with a leakage detection device outside the valve body. Rigidity seal valve seat detection holes evenly distributed are formed in the middle of the rigidity sealing face of the rigidity seal valve seat. Meanwhile, the back portion and the outer circle of the rigidity seal valve seat are respectively provided with an O-shaped ring. The forced seal ball valve rigidity seal valve seat with the stopping and discharging functions has the advantages that when the temperature and the pressure of the spherical rigidity sealing face and the sealing face of the rigidity seal valve seat are changed alternately, the performance cannot be changed and sealing of a valve is reliable.
Description
Technical field
The utility model relates to a kind of valve seat construction, and particularly a kind of forced seal ball valve has the hard seal valve seat of cut-off and discharge function.
Background technique
Forced seal ball valve is one of nucleus equipment of metering section in natural gas station, also must possess online detection valve leak function in meeting unidirectional 30 years " zero leakage ", i.e. cut-off and discharge (Block and Bleed) function.
The cut-off of forced seal ball valve at present and the seat design of discharge function are soft seal, at the embedded polytetrafluoroethylene PTFE soft sealing material of metal seat valve, in the middle of polytetrafluoroethylene PTFE soft sealing material, arrange and be uniformly distributed Leak testtion hole, external diameter and back at metal valve seat ring process groove and adopt "O"-ring realization sealing, and valve body outer installment leakage detection apparatus is realized cut-off and discharge function.If valve seat soft sealing face goes wrong, gas can be penetrated in the groove at valve seat back by Leak testtion hole.This groove gas can be directed through valve body and be connected to the leakage detection apparatus of valve body outside.User is by the leakage detection apparatus of open valve external body, and whether the sealing that just can judge soft valve seat is tight.By technical Analysis, find to exist following defect:
1) in the time that pipeline contains solid particle, can damage PTFE soft sealing material, cause valve seal disabler;
2) PTFE elastic properties of materials scope is very little, and plastic range is very large, in the time that stress acquires a certain degree, easily produces " cold flow " phenomenon, and macroscopical change in shape occurs, and causes valve seal disabler;
3) PTFE soft sealing material easily with metal ball body friction generation static, to valve there is hidden danger in safe operation;
4) PTFE soft sealing material meeting scaling loss in the time of fire, causes valve seal disabler.
Model utility content
Technical problem to be solved in the utility model is will provide a kind of to realize online detection valve, and the strong forced seal ball valve of valve seal has the hard seal valve seat ending with discharge function.
In order to solve above technical problem, the utility model provides a kind of realization the online valve that detects, comprising valve body, valve body detection hole, spheroid, the hard sealing surface of spheroid, hard seal valve seat back O type circle, hard seal valve seat, the hard hard sealing surface of seal valve seat, hard seal valve seat detection hole, hard seal valve seat external diameter O type circle, roller, valve rod, valve gap, support, guide finger, slotted nut, anti-attrition cover, dust-proof cover, actuator and leakage detection apparatus.
Valve body and valve gap are by double-screw bolt bolt, valve body arranges valve body and detects hole, valve body detects hole and is connected with the leakage detection apparatus of valve body outside, this hard seal valve seat arranges uniform hard seal valve seat and detects hole in the centre of the hard hard sealing surface of seal valve seat, be respectively equipped with O type circle on hard seal valve seat back and external diameter simultaneously.
The hard sealing surface of described hard seal valve seat and the hard sealing surface of spheroid form mutual rubbing surface.
Described spheroid is connected with one end of valve rod, and the other end is connected with actuator, and guide finger is installed anti-attrition cover through two ends cylindrical after valve rod, and two ends anti-attrition is applied mechanically slotted nut and fixed.
Hard seal valve seat arranges and is uniformly distributed hard seal valve seat detection hole in the middle of the hard hard sealing surface of seal valve seat, hard seal valve seat back O type circle and hard seal valve seat external diameter O type circle are set respectively on back and external diameter, can ensure that the gas leaking detects hole by hard seal valve seat and is penetrated in the groove at hard seal valve seat back.If the hard sealing surface of hard seal valve seat goes wrong, gas can detect hole by hard seal valve seat and be penetrated in the groove at hard seal valve seat back.This groove gas detects hole through valve body can be directed and be connected to the leakage detection apparatus of valve body outside, realizes the online valve leak function that detects, i.e. cut-off and discharge (Block and Bleed) function.
Spheroid built-up welding or spraying spheroid hard sealing surface, hard seal valve seat built-up welding or spray the hard sealing surface of hard seal valve seat.After the hard sealing surface of spheroid and the hard sealing surface weld deposit of valve seat or spraying, hardness is high, in the time that pipeline contains solid particle, can not damage hard sealing surface, can ensure 30 years above working life.
The hard sealing surface of spheroid matrix and spheroid, hard seal valve seat matrix belongs to metallurgy combination with the hard hard sealing surface of seal valve seat, and in the time of temperature and pressure alternation, performance does not change, and valve seal is reliable.
The hard sealing surface friction of the hard sealing surface of spheroid and valve seat does not produce static, and valve moves without hidden danger.
The hard sealing surface of spheroid and the hard sealing surface of valve seat belong to essence fire prevention, and when fire, valve still seals reliably.
Superior effect of the present utility model is:
1) valve seat adopts hard sealing surface, avoids producing the problem of valve seat soft sealing face;
2) after the hard sealing surface of spheroid and the hard sealing surface weld deposit of valve seat or spraying, hardness is high, in the time that pipeline contains solid particle, can not damage hard sealing surface, can ensure 30 years above working life;
3) the hard sealing surface of spheroid matrix and spheroid, hard seal valve seat matrix belongs to metallurgy combination with the hard hard sealing surface of seal valve seat, and in the time of temperature and pressure alternation, performance does not change, and valve seal is reliable;
4) the hard sealing surface friction of the hard sealing surface of spheroid and valve seat does not produce static, and valve moves without hidden danger;
5) the hard sealing surface of spheroid and the hard sealing surface of valve seat belong to essence fire prevention, and when fire, valve still seals reliably.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the enlarged view of Fig. 1 A portion;
Number in the figure explanation
1-valve body; 1A-valve body detects hole;
2-spheroid; The hard sealing surface of 2A-spheroid;
3-hard seal valve seat back O type circle; 4-hard seal valve seat;
4A-hard hard sealing surface of seal valve seat; 4B-hard seal valve seat detects hole;
5-hard seal valve seat external diameter O type circle; 6-roller;
7-valve rod; 8-valve gap;
9-support; 10-guide finger;
11-slotted nut; 12-anti-attrition cover;
13-dust-proof cover; 14-actuator;
15-leakage detection apparatus.
Embodiment
Refer to shown in accompanying drawing, the utility model will be further described.
As shown in Figure 1, the hard seal valve seat that the utility model provides a kind of forced seal ball valve to have cut-off and discharge function, comprises that valve body 1, valve body detect hole 1A, spheroid 2, the hard sealing surface 2A of spheroid, hard seal valve seat back O type circle 3, hard seal valve seat 4, the hard hard sealing surface 4A of seal valve seat, seal valve seat detects hole 4B, hard seal valve seat external diameter O type circle 5, roller 6, valve rod 7, valve gap 8, support 9, guide finger 10, slotted nut 11, anti-attrition cover 12, dust-proof cover 13, actuator 14 and leakage detection apparatus 15 firmly.
Valve body 1 passes through double-screw bolt bolt with valve gap 8, valve body 1 arranges valve body and detects hole 1A, valve body detects hole 1A and is connected with the leakage detection apparatus 15 of valve body outside, this hard seal valve seat 4 arranges uniform hard seal valve seat and detects hole 4B in the centre of the hard hard sealing surface 4A of seal valve seat, be respectively equipped with hard seal valve seat back O type circle 3 and hard seal valve seat external diameter O type circle 5 on hard seal valve seat 4 backs and external diameter simultaneously.
The hard sealing surface 4A of described hard seal valve seat and the hard sealing surface 2A of spheroid form mutual rubbing surface.
Described spheroid 2 is connected with one end of valve rod 7, and the other end is connected with actuator 14, and guide finger 10 is installed anti-attrition cover 12 through the rear two ends of valve rod 7 cylindrical, and two ends anti-attrition cover 12 use slotted nuts 11 are fixing.
Hard seal valve seat 4 arranges and is uniformly distributed hard seal valve seat detection hole 4B in the middle of the hard hard sealing surface 4A of seal valve seat, hard seal valve seat back O type circle 3 and hard seal valve seat external diameter O type circle 5 are set respectively on back and external diameter, can ensure that the gas leaking detects hole 4B by hard seal valve seat and is penetrated in the groove at hard seal valve seat 4 backs.If the hard sealing surface 4A of hard seal valve seat goes wrong, gas can detect hole 4B by hard seal valve seat and be penetrated in the groove at hard seal valve seat back.This groove gas detects hole 1A through valve body can be directed and be connected to the leakage detection apparatus 15 of valve body outside, realizes the online valve leak function that detects, i.e. cut-off and discharge (Block and Bleed) function.
Spheroid 2 built-up welding or spraying spheroid hard sealing surface 2A, hard seal valve seat 4 built-up welding or spray the hard sealing surface 4A of hard seal valve seat.After the hard sealing surface 2A of spheroid and valve seat hard sealing surface 4A built-up welding or spraying, hardness is high, in the time that pipeline contains solid particle, can not damage hard sealing surface, can ensure 30 years above working life.
The hard sealing surface 2A of spheroid 2 matrixes and spheroid, hard seal valve seat 4 matrixes belong to metallurgy combination with the hard hard sealing surface 4A of seal valve seat, and in the time of temperature and pressure alternation, performance does not change, and valve seal is reliable.
The hard sealing surface 4A friction of the hard sealing surface 2A of spheroid and valve seat does not produce static, and valve moves without hidden danger.
The hard sealing surface 2A of spheroid and the hard sealing surface 4A of valve seat belong to essence fire prevention, and when fire, valve still seals reliably.
Working principle of the present utility model is: guide finger 10 is installed anti-attrition cover 12 through the rear two ends of valve rod 7 cylindrical, and two ends anti-attrition cover 12 use slotted nuts 11 are fixing, prevent axial float and can realize online replacing function.Rotate counterclockwise actuator 14, make valve rod 7 increase, now anti-attrition cover 12 coordinates with the spiral fluted straight journey section of support 9 front and back symmetries, 7 of valve rods of restriction are done ascending motion, valve rod 7 parallel wedge surface below coordinates with roller 6, make spheroid 2 first be offset an angle left, the hard sealing surface 2A of spheroid and the hard sealing surface 4A of hard seal valve seat depart from.Valve rod 7 continues to rise, and anti-attrition cover 12 rotates section with the spiral fluted of support 9 front and back symmetries and coordinates, and restriction valve rod 7 is done 90 degree rotations, and valve rod 7 parallel wedge surface below coordinates drive spheroid 2 to make 90 degree without friction rotation, valve opening with roller 6.Closing of valve is just contrary to the above.
Dust-proof cover 13 can isolating exterior impurity enter outside valve rod 7 and packing seal, the moment of torsion that can not cause valve increases or jam phenomenon occurs.
Claims (3)
1. a forced seal ball valve has the hard seal valve seat ending with discharge function, valve body and valve gap are by double-screw bolt bolt, valve body arranges valve body and detects hole, valve body detects hole and is connected with the leakage detection apparatus of valve body outside, it is characterized in that: this hard seal valve seat arranges uniform hard seal valve seat and detects hole in the centre of the hard hard sealing surface of seal valve seat, on hard seal valve seat back and external diameter, O type circle is set respectively simultaneously.
2. forced seal ball valve according to claim 1 has the hard seal valve seat of cut-off and discharge function, it is characterized in that: the hard sealing surface of described hard seal valve seat and the hard sealing surface of spheroid form mutual rubbing surface.
3. forced seal ball valve according to claim 2 has the hard seal valve seat of cut-off and discharge function, it is characterized in that: described spheroid is connected with one end of valve rod, the other end is connected with actuator, guide finger is installed anti-attrition cover through two ends cylindrical after valve rod, and two ends anti-attrition is applied mechanically slotted nut and fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420087479.2U CN203757048U (en) | 2014-02-28 | 2014-02-28 | Forced seal ball valve rigidity seal valve seat with stopping and discharging functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420087479.2U CN203757048U (en) | 2014-02-28 | 2014-02-28 | Forced seal ball valve rigidity seal valve seat with stopping and discharging functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203757048U true CN203757048U (en) | 2014-08-06 |
Family
ID=51252327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420087479.2U Expired - Fee Related CN203757048U (en) | 2014-02-28 | 2014-02-28 | Forced seal ball valve rigidity seal valve seat with stopping and discharging functions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203757048U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606224A (en) * | 2017-09-12 | 2018-01-19 | 淄博沃泰斯石化设备有限公司 | A kind of planetary roller screw and preparation method and forced seal ball valve |
-
2014
- 2014-02-28 CN CN201420087479.2U patent/CN203757048U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107606224A (en) * | 2017-09-12 | 2018-01-19 | 淄博沃泰斯石化设备有限公司 | A kind of planetary roller screw and preparation method and forced seal ball valve |
| CN107606224B (en) * | 2017-09-12 | 2019-08-13 | 淄博沃泰斯石化设备有限公司 | A kind of planetary roller screw and production method and forced seal ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201416 Shanghai city Fengxian District Zhelin Town Village Road No. 199 Patentee after: SHK VALVE GROUP Co.,Ltd. Address before: 201416 Shanghai city Fengxian District Zhelin Town Village Road No. 199 Patentee before: SHK Valve Group Co.,Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20170418 Address after: 201416 Shanghai city Fengxian District Zhelin Town Village Road No. 138 building 4 Patentee after: SHK VALVE GROUP CO.,LTD. Address before: 201416 Shanghai City, Fengxian District Fengxian District Zhelin Town Village Road No. 199 Patentee before: SHK VALVE GROUP Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181011 Address after: 201416 199 North Village Road, Zhelin Town, Fengxian District, Shanghai Patentee after: SHK VALVE GROUP Co.,Ltd. Address before: 201416 4 4 North Village Road, Zhelin Town, Fengxian District, Shanghai Patentee before: SHK VALVE GROUP CO.,LTD. |
|
| TR01 | Transfer of patent right | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20190821 Granted publication date: 20140806 |
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| PD01 | Discharge of preservation of patent |
Date of cancellation: 20220821 Granted publication date: 20140806 |
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| PD01 | Discharge of preservation of patent | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20220821 Granted publication date: 20140806 |
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| PP01 | Preservation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20240228 Granted publication date: 20140806 |
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| PD01 | Discharge of preservation of patent |