CN102691801A - Method for maintaining butterfly valve sealing mechanism on line - Google Patents
Method for maintaining butterfly valve sealing mechanism on line Download PDFInfo
- Publication number
- CN102691801A CN102691801A CN2012101891057A CN201210189105A CN102691801A CN 102691801 A CN102691801 A CN 102691801A CN 2012101891057 A CN2012101891057 A CN 2012101891057A CN 201210189105 A CN201210189105 A CN 201210189105A CN 102691801 A CN102691801 A CN 102691801A
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- Prior art keywords
- groove
- hole
- butterfly valve
- resin
- butterfly
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 26
- 230000007246 mechanism Effects 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 19
- 229920005989 resin Polymers 0.000 claims abstract description 19
- 238000012423 maintenance Methods 0.000 claims abstract description 18
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention relates to a method for maintaining a butterfly valve sealing mechanism on line. The butterfly valve sealing mechanism comprises a groove which is formed on a valve body, and a sealing ring which is arranged in the groove, wherein the sealing ring is provided with a dovetail groove-shaped edge which is inserted into the groove in an inverted mode; resin is injected between the dovetail groove-shaped edge and the groove; a hole is formed on the surface of the valve body and is communicated with the groove; and the resin is injected into the groove through the hole. The method is characterized by comprising the following steps of: when the sealing ring is worn or broken, closing the butterfly valve, breaking the sealing of the hole, injecting the resin into the groove through the hole to ensure that the sealing ring squeezes a butterfly plate of the butterfly valve outwards until the sealing ring and the butterfly plate are sealed completely, sealing the hole, and solidifying the resin to finish maintenance. According to the method, by adoption of online maintenance, direct maintenance of the butterfly valve sealing mechanism can be realized under the condition that the butterfly valve is not dismounted, so that inconvenience caused by the conventional maintenance method is avoided, the maintenance time is shortened, the loss caused by the maintenance is reduced, and the maintenance difficulty is reduced.
Description
Technical field
the present invention relates to the on-line maintenance method of a kind of butterfly valve seal mechanism.
Background technique
butterfly valve is Flap valve again, is a kind of modulating valve simple in structure, also can be used for the switch control of low pressure pipeline medium simultaneously.Butterfly valve is meant that closure member (flap or butterfly plate) is a disk, rotates a kind of valve that reaches open and close around valve shaft, and main rising cut off and throttling action on pipeline.The butterfly valve open-shut device is a discoidal butterfly plate, and the axis around himself in valve body rotates, thereby reaches the purpose that opens and closes or regulate.Butterfly valve is applicable in the engineering systems such as producer, coal gas, rock gas, LPG, town gas, cold and hot air, chemical industry smelting and generation environment-friendly and carries on the pipeline of various corrosivity, non-corrosive fluids medium, is used to regulate and block flowing of medium.
The key of the keying of
butterfly valve is the sealing between valve body and the butterfly plate; Because butterfly plate is in the state of switching for a long time; And the friction between the valve body is more, causes sealing variation or blow-by thereby all be easy to generate wearing and tearing between the two, and the serious whole butterfly valve that makes is scrapped.At present, when sealing problem appears in valve body and butterfly plate, often need whole butterfly valve be disassembled, and then keep in repair, but maintenance inconvenience very, and therefore, a lot of butterfly valves are directly scrapped owing to inconvenient maintenance, cause waste.
Summary of the invention
the purpose of this invention is to provide the on-line maintenance method of a kind of butterfly valve seal mechanism.
For achieving the above object, the technological scheme that the present invention adopts is:
The on-line maintenance method of
a kind of butterfly valve seal mechanism; Described sealing mechanism comprises the groove that is opened on the described valve body; Be arranged on the seal ring in the described groove; Described seal ring has a dovetail grooved limit portion, and described dovetail grooved limit portion is inserted in the described groove, and injection has resin between described dovetail grooved limit portion and the described groove; The surface of described valve body is offered porose, and described hole is connected with described groove, and described resin is injected in the described groove through described hole; It is characterized in that:, carry out according to the following steps: close butterfly valve, the sealing in the described hole of broken ring when described ring wear or when damaged; Through described hole injecting resin in described groove; Make described seal ring butterfly plate outside and butterfly valve produce extruding, seal fully, the hole is sealed until described seal ring and butterfly plate; Cured resin is accomplished and is repaired.
preferably adopt pressure unit that pressure injecting resin in described hole is provided.
Because the technique scheme utilization, the present invention compared with prior art has advantage:
the present invention is through adopting on-line maintenance; Can under the situation that butterfly valve is not pulled down, directly keep in repair, avoid the inconvenience that method for maintaining brought of transmission, shorten engineering time; Reduce the loss that causes owing to maintenance, reduced the difficulty of maintenance.
Description of drawings
Accompanying drawing 1 is the plan view of valve body among the present invention;
Accompanying drawing 2 is the side view of valve body among the present invention;
Accompanying drawing 3 is the sectional view of valve body among the present invention;
Accompanying drawing 4 is the plan view of seal ring among the present invention;
accompanying drawing 5 is the side view of seal ring among the present invention.
wherein: 1, valve body; 10, axis hole; 11, groove; 12, ring-shaped valve seats; 120, outer circumferential face; 121, inner peripheral surface; 2, seal ring; 20, dovetail grooved limit portion; 3, hole.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further described:
A kind of butterfly valve is at first introduced in
, comprises valve body 1, butterfly plate and valve rod, offers axis hole 10 on the valve body 1, and valve rod passes axis hole 10 and is fixedly connected with butterfly plate, and valve body 1 cooperates the path that forms switching with butterfly plate.Wherein: butterfly plate, valve rod are not key points in design of the present invention, and its structure is not given unnecessary details at this.
are shown in Fig. 1-3: be provided with sealing mechanism between valve body 1 and the butterfly plate; Sealing mechanism comprises the groove 11 that is opened on the valve body 1; Be arranged on the seal ring 2 in the groove 11, in the present embodiment, valve body 1 has a ring-shaped valve seats 12; Ring-shaped valve seats 12 has outer circumferential face 120, inner peripheral surface 121, and groove 11 is opened on the inner peripheral surface 121 of ring-shaped valve seats 12; Offer porosely 3 on the surface of valve body 1, hole 3 is connected with groove 11, and specifically, hole 3 is arranged on the outer circumferential face 120 of ring-shaped valve seats 12, and the concrete quantity in hole 3 can be offered according to actual needs; In addition, the width of width to groove 11 bottom surfaces of groove 11 openings reduces gradually.
are shown in Fig. 4-5: seal ring 2 has a dovetail grooved limit portion 20, and dovetail grooved limit portion 20 is inserted in the groove 11, and injection has resin between dovetail grooved limit portion 20 and the groove 11; The material of seal ring 2 is typically chosen in ethylene propylene diene rubber (EPDM).
Below the concrete installation process of setting forth sealing mechanism in the present embodiment down:
Insert dovetail grooved limit portion 20 openings of seal ring 2
towards the bottom surface of groove 11; Because the width of width to groove 11 bottom surfaces of groove 11 openings reduces gradually; Dovetail grooved limit portion 20 inserts grooves 11 backs by the restriction of the opening of groove 11, prevents that in open and close seal ring 2 is brought out by butterfly plate; Close butterfly plate,, seal fully until seal ring 2 and butterfly plate through injecting resin in 3 pairs of grooves in hole on ring-shaped valve seats 12 outer circumferential faces 120 11; Hole 3 is sealed, and cured resin is accomplished the installation of sealing mechanism.
make itself and seal ring 2 constantly wear and tear because butterfly plate is in the state of open and close for a long time, cause seal ring 2 sealing effect variation even damaged, therefore, need online sealing mechanism be repaired.
Below concrete online mending course of setting forth sealing mechanism in the present embodiment down:
Butterfly plate is closed in
, and broken ring ring-shaped valve seats 12 has the sealing in hole 3 on the outer circumferential face 120, adopts pressure unit that pressure is provided; Continue in groove 11, to inject resin through this hole 3; Make seal ring 2 outside and butterfly plate generation extruding, seal fully, once more hole 3 is sealed until seal ring 2 and butterfly plate; Cured resin is accomplished online repairing.
the foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to let the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (2)
1. the on-line maintenance method of a butterfly valve seal mechanism; Described sealing mechanism comprises the groove that is opened on the described valve body; Be arranged on the seal ring in the described groove; Described seal ring has a dovetail grooved limit portion, and described dovetail grooved limit portion is inserted in the described groove, and injection has resin between described dovetail grooved limit portion and the described groove; The surface of described valve body is offered porose, and described hole is connected with described groove, and described resin is injected in the described groove through described hole; It is characterized in that:, carry out according to the following steps: close butterfly valve, the sealing in the described hole of broken ring when described ring wear or when damaged; Through described hole injecting resin in described groove; Make described seal ring butterfly plate outside and butterfly valve produce extruding, seal fully, the hole is sealed until described seal ring and butterfly plate; Cured resin is accomplished and is repaired.
2. the on-line maintenance method of a kind of butterfly valve seal according to claim 1 mechanism is characterized in that: adopt pressure unit that pressure injecting resin in described hole is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101891057A CN102691801A (en) | 2012-06-11 | 2012-06-11 | Method for maintaining butterfly valve sealing mechanism on line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101891057A CN102691801A (en) | 2012-06-11 | 2012-06-11 | Method for maintaining butterfly valve sealing mechanism on line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102691801A true CN102691801A (en) | 2012-09-26 |
Family
ID=46857450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101891057A Pending CN102691801A (en) | 2012-06-11 | 2012-06-11 | Method for maintaining butterfly valve sealing mechanism on line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102691801A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641555A (en) * | 2016-12-22 | 2017-05-10 | 江苏迪森阀门科技有限公司 | Online restoration method of DESN butterfly valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6202983B1 (en) * | 1999-10-13 | 2001-03-20 | Thomas A. Hartman | Valve seal structured to prevent circumferential slippage |
| CN2854119Y (en) * | 2005-12-12 | 2007-01-03 | 河南上蝶阀门股份有限公司 | Hydraulic intake-butterfly valve of high waterhead hydroturbine |
| CN201461990U (en) * | 2009-06-03 | 2010-05-12 | 上海高低压阀门有限公司 | Eccentric soft sealing butterfly valve |
| CN102128275A (en) * | 2011-03-18 | 2011-07-20 | 赵雷 | Soft sealing butterfly valve and method for preparing valve seat sealing ring thereof |
| CN202040346U (en) * | 2011-04-13 | 2011-11-16 | 天津市塘沽沃特斯阀门有限公司 | Sealing pair of eccentric flange butterfly valve |
-
2012
- 2012-06-11 CN CN2012101891057A patent/CN102691801A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6202983B1 (en) * | 1999-10-13 | 2001-03-20 | Thomas A. Hartman | Valve seal structured to prevent circumferential slippage |
| CN2854119Y (en) * | 2005-12-12 | 2007-01-03 | 河南上蝶阀门股份有限公司 | Hydraulic intake-butterfly valve of high waterhead hydroturbine |
| CN201461990U (en) * | 2009-06-03 | 2010-05-12 | 上海高低压阀门有限公司 | Eccentric soft sealing butterfly valve |
| CN102128275A (en) * | 2011-03-18 | 2011-07-20 | 赵雷 | Soft sealing butterfly valve and method for preparing valve seat sealing ring thereof |
| CN202040346U (en) * | 2011-04-13 | 2011-11-16 | 天津市塘沽沃特斯阀门有限公司 | Sealing pair of eccentric flange butterfly valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641555A (en) * | 2016-12-22 | 2017-05-10 | 江苏迪森阀门科技有限公司 | Online restoration method of DESN butterfly valve |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120926 |