CN102080731B - Sealing structure of blind plate valve and blind plate valve containing same - Google Patents
Sealing structure of blind plate valve and blind plate valve containing same Download PDFInfo
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- CN102080731B CN102080731B CN2009102462112A CN200910246211A CN102080731B CN 102080731 B CN102080731 B CN 102080731B CN 2009102462112 A CN2009102462112 A CN 2009102462112A CN 200910246211 A CN200910246211 A CN 200910246211A CN 102080731 B CN102080731 B CN 102080731B
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Abstract
The invention discloses a sealing structure of a blind plate valve and the blind plate valve containing the same. The sealing structure of the blind plate valve comprises a valve plate arranged on the blind plate valve, a sealing ring arranged between a fixed valve seat and a floating valve seat, and a water seal system, wherein the water seal system comprises a first water ring groove on the contact side of the fixed valve seat and the valve plate of the blind plate valve, a second water ring groove on the contact side of the floating valve seat and the valve plate of the blind plate valve, and an external water pipeline communicated with the first water ring groove and/or the second water ring groove. The blind plate valve comprises the fixed valve seat, the floating valve seat and the valve plate, wherein the valve plate is arranged between the fixed valve seat and the floating valve seat; and the blind plate valve also comprises the sealing structure of the blind plate valve. Through the composite sealing structure of the sealing ring and the water seal, the blind plate valve has better sealing performance and higher safety and reliability.
Description
Technical field
The present invention relates to a kind of sealing configuration and blank-plate valve of blank-plate valve, particularly be applicable to the blank-plate valve and the blank-plate valve sealing configuration that are used as in blast furnace gas system, TRT blast furnace gas excess pressure power generating system and the gravitational dust collection system in the reliable partition apparatus of coal gas.
Background technique
Blank-plate valve is the gas partition device of blast furnace gas system, blast furnace top pressure power generation system (being called for short the TRT system) and gravitational dust collection system.According to " industrial enterprise's gas safety rules " regulation (GB6222-2005); When a sub-systems needs to cut off isolation with the gas main of operation; Construct, when overhauling; Because coal gas is flammable and poisonous, thus must arm and gas main be cut off safely and reliably, to guarantee construction, maintainer's safety.Blank-plate valve is as a kind of reliable cut-out equipment, plays an important role preventing that coal gas from leaking, protecting personal security and reducing in the environmental pollution.
But because the furnace top pressure of blast furnace improves constantly in recent years, the nominal pressure that is used in the blank-plate valve on the blast furnace gas pipeline also improves thereupon, and the sealability of blank-plate valve has satisfied not the needs that use.In using at the scene, because the blank-plate valve seal failure causes casualties and property loss gas leakage, explosion of fire damp.Only 2002 to 2008, industrial enterprise's coal gas accident took place 35, and wherein smelter coal gas accident is 24, accounted for 68.6% of sum, and dead 113 people account for 74.4% of sum.And gas partition device to be the blank-plate valve seal failure be principal element that the coal gas accident takes place.
Summary of the invention
In order to solve the problem that exists in the existing technology, the purpose of this invention is to provide a kind of favorable sealing property, the blank-plate valve sealing configuration that safety reliability is high.
To achieve these goals; The present invention has adopted following technological scheme: a kind of sealing configuration of blank-plate valve; Comprise the valve plate that is arranged at blank-plate valve and the seal ring between fixed valve base and the floating valve seat; Also comprise seal water system, said seal water system comprise the fixed valve base that is opened in blank-plate valve and valve plate contacting side the first water ring groove, be opened in the floating valve seat and second water ring groove of valve plate contacting side and the external water pipeline that is connected with the said first water ring groove and/or the second water ring groove of blank-plate valve.
As preferably, be arranged at the valve plate of blank-plate valve and the seal ring between fixed valve base and the floating valve seat and be respectively two, and the first water ring groove and the second water ring groove lays respectively at and its corresponding two seal rings between.
As preferably, be communicated with through a plurality of through holes that pass the valve plate of blank-plate valve between the said first water ring groove and the second water ring groove, said external water pipeline is a cover, in the said first water ring groove and the second water ring groove one is communicated with said external water pipeline.
As preferably; Said external water pipeline comprises inlet and outlet pipe lines, water intake, water outlet, overflow pipe, water flow-off; One end of said inlet and outlet pipe lines is connected with the bottom of the said first water ring groove and/or the second water ring groove, and the other end is connected with water outlet with water intake respectively through a threeway; The first water ring groove that one end of said overflow pipe is connected with inlet and outlet pipe lines and/or the top of the second water ring groove connect, and the other end of said overflow pipe is connected with said water flow-off.
As preferably, the water that is sealed in the said first water ring groove and the second water ring groove is aqueous rust preventive.
As preferably, said seal ring is a rubber seal.
The present invention provides a kind of blank-plate valve simultaneously, comprises fixed valve base, floating valve seat and valve plate, and said valve plate is arranged between said fixed valve base and the floating valve seat, also comprises the sealing configuration of each described blank-plate valve among the claim 1-6.
As preferably, said valve plate is a hollow structure.
Compared with prior art, beneficial effect of the present invention is:
The present invention adopts the compound sealing structure of seal ring and water-stop, makes the sealability of blank-plate valve better, and safety reliability is higher.Water-stop not only gas barrier property is good, and molten gas property, makes the sealing effect of blank-plate valve produce qualitative leap.
Description of drawings
Fig. 1 is the broken section enlarged diagram of the side view of the sealing configuration of blank-plate valve of the present invention and the blank-plate valve that contains the sealing structure.
Fig. 2 is the structural representation of the seal water system exterior line plan view of the sealing configuration of blank-plate valve of the present invention and the blank-plate valve that contains the sealing structure.
Description of reference numerals
1-fixed valve base 2-floating valve seat
3-valve plate 4-seal ring
The 5-first water ring groove 6-sealing surface A
7-sealing surface B 8-water-in and water-out pipeline
9-overflow pipe 10-water intake
11-water outlet 12-water flow-off
13-threeway 14-elbow
15-stop valve 16-through hole
The 17-second water ring groove
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail, but not as to qualification of the present invention.
As shown in Figure 1; The sealing configuration of blank-plate valve of the present invention comprises the valve plate 3 that is arranged at blank-plate valve and the seal ring 4 between fixed valve base 1 and the floating valve seat 2; Also comprise seal water system, said seal water system comprise the fixed valve base 1 that is opened in blank-plate valve and valve plate 3 contacting sides the first water ring groove 5, be opened in the floating valve seat 2 and second water ring groove 17 of valve plate 3 contacting sides and the external water pipeline that is connected with the said first water ring groove 5 and/or the second water ring groove 17 of blank-plate valve.
Blank-plate valve of the present invention; Comprise fixed valve base 1, floating valve seat 2, valve plate 3 and seal water system; Said valve plate 3 is arranged between said fixed valve base 1 and the floating valve seat 2; Valve plate 3 can rotate or move, thereby makes valve plate 3 be in blind plate position or ventilating hole plate position, realizes the open and close of blank-plate valve.Between valve plate 3 and fixed valve base 1 and the floating valve seat 2 seal ring 4 is set respectively.Said seal water system comprises the first water ring groove 5, the second water ring groove 17 and the external water pipeline that is connected with the first water ring groove 5 and/or the second water ring groove 17; The first water ring groove 5 is opened in fixed valve base 1 and said valve plate 3 contacting sides, and the second water ring groove 17 is opened in said floating valve seat 2 and said valve plate 3 contacting sides.In order to realize good sealing property, the seal ring 4 between said valve plate 3 and fixed valve base 1 and the floating valve seat 2 is respectively two, and the first water ring groove 5 and the second water ring groove 17 lays respectively at and its corresponding two seal rings 4 between.The sealing surface B7 that between the sealing surface A6 that forms between fixed valve base 1 and the valve plate 3 and floating valve seat 2 and valve plate 3, forms; Sealing surface A6 and sealing surface B7 all are the composite seal structures by soft and hard seal+water ring sealing+soft and hard seal, make the airtight quality of blank-plate valve better.And water ring seals not only that gas barrier property is good, and molten gas property is good.So the sealing configuration of this combined type can make the sealing effect of blank-plate valve produce qualitative leap.
As a kind of preferred version of the present invention; In order to reduce structure, save tubing, reduce cost; Be opened in the first water ring groove 5 and the second water ring groove, 17 shared cover external water pipelines on said fixed valve base 1 and the floating valve seat 2 respectively; For water can be circulated in the first water ring groove 5 and the second water ring groove 17, between fixed valve base 1 and floating valve seat 2, be communicated with, in order to make hydraulic pressure and water level in the first water ring groove 5 and the second water ring groove 17 suitable through a plurality of through holes 16 that pass said valve plate 3; A plurality of through holes 16 preferably are distributed between the first water ring groove 5 and the second water ring groove 17, and in the first water ring groove 5 and the second water ring groove 17 one is communicated with the external water pipeline.The first water ring groove 5 that is arranged on the fixed valve base 1 shown in Fig. 1 is communicated with the external water pipeline.
As further preferred version of the present invention; As depicted in figs. 1 and 2; External water pipeline in the blank-plate valve sealing configuration of the present invention comprises water-in and water-out pipeline 8, water intake 10, water outlet 11, overflow pipe 9, water flow-off 12; One end of said water-in and water-out pipeline 8 is connected with the bottom of the first water ring groove 5 on being opened in fixed valve base 1, and the other end is connected with water outlet 11 with water intake 10 respectively through a threeway 13; One end of overflow pipe 9 is connected with the top of the first water ring groove 5 on being opened in fixed valve base 1, and the other end of overflow pipe 9 is connected with said water flow-off 12.Overflow pipe 9 is drawn from the top of the first water ring groove 5; Guaranteed the pressure of water seal; Water in the first water ring groove 5 and the second water ring groove 17 draws to get off through overflow pipe 9, elbow 14 and stop valve 15, makes things convenient for water to reserve through water flow-off 12, and can not be sprayed onto on the blank-plate valve.
As preferred version further of the present invention,, make sealing surface A6 and sealing surface B7 broad, so valve plate 3 obviously increases the weight of owing on fixed valve base 1 and floating valve seat 2, offer the first water ring groove 5 and the second water ring groove 17 carries out water-stop.Therefore valve plate 3 adopts the hollow structure of welding, and the weight of valve plate 3 is reduced greatly, has promptly saved material, has reduced the power requirement again, thereby has reduced cost.
For the part that guarantees to contact with water can not be corroded, prolong the working life of blank-plate valve, the water that is sealed in the first water ring groove 5 and the second water ring groove 17 is aqueous rust preventive.Seal ring 4 described in the present invention simultaneously is a rubber seal.
Facing working procedure of the present invention and principle down briefly introduces as follows:
When needs are opened blank-plate valve; At first the clamp device of operation setting on floating valve seat 2 makes valve plate 3, floating valve seat 2 move to the direction away from fixed valve base 1, makes between fixed valve base 1, valve plate 3, the floating valve seat 2 and unclamps each other; Sealing surface A6 and sealing surface B7 place all have the certain clearance amount; Rotation or mobile valve plate 3 become the ventilating hole plate position by the blind plate position then, then operate clamp device once more, and valve plate 3 and floating valve seat 2 are moved to the direction near fixed valve base 1; Make each other to compress, the gap at sealing surface A6 and sealing surface B7 place is zero.Open seal water system then, close the stop valve of water outlet 11, open the stop valve of water intake 10 and water flow-off 12; By water intake 10 water fillings; When water flow-off 12 there are flowing out, close the stop valve of water intake 10, to guarantee the sealability of the first water ring groove 5 and the second water ring groove 17.At this moment; On sealing surface A6 and the sealing surface B7; Rubber seal 4 places the inside and outside both sides of the first water ring groove 5 corresponding with it and the second water ring groove 17 respectively, forms the composite seal structure of three road ring packings, and the sealing reliability of blank-plate valve is significantly improved; Especially when medium was poisonous, harmful gas such as coal gas, the Security of blank-plate valve was more reliable.
When needs are closed blank-plate valve, at first open the stop valve 12 of water outlet 11, earlier with the whole emptying of the water in the seal water system; The clamp device of operation setting on floating valve seat 2 makes valve plate 3, floating valve seat 2 move to the direction away from fixed valve base 1 again, makes between fixed valve base 1, valve plate 3, the floating valve seat 2 and unclamps each other; Sealing surface A6 and sealing surface B7 place all have the certain clearance amount; Rotation or mobile valve plate 3 become the blind plate position by the ventilating hole plate position then, then operate clamp device once more, and valve plate 3 and floating valve seat 2 are moved to the direction near fixed valve base 1; Make each other to compress, the gap at sealing surface A6 and sealing surface B7 place is zero.Open seal water system then, close the stop valve of water outlet 11, open the stop valve of water intake 10 and water flow-off 12; By water intake 10 water fillings; When water flow-off 12 there are flowing out, close the stop valve of water intake 10, to guarantee the sealability of the first water ring groove 5 and the second water ring groove 17.
Claims (7)
1. the sealing configuration of a blank-plate valve; Comprise the valve plate that is arranged at blank-plate valve and the seal ring between fixed valve base and the floating valve seat; It is characterized in that; Also comprise seal water system, said seal water system comprise the fixed valve base that is opened in blank-plate valve and valve plate contacting side the first water ring groove, be opened in the floating valve seat and second water ring groove of valve plate contacting side and the external water pipeline that is connected with the said first water ring groove and/or the second water ring groove of blank-plate valve;
Said external water pipeline comprises inlet and outlet pipe lines, water intake, water outlet, overflow pipe, water flow-off; One end of said inlet and outlet pipe lines is connected with the bottom of the said first water ring groove and/or the second water ring groove, and the other end is connected with water outlet with water intake respectively through a threeway; The first water ring groove that one end of said overflow pipe is connected with inlet and outlet pipe lines and/or the top of the second water ring groove connect, and the other end of said overflow pipe is connected with said water flow-off.
2. the sealing configuration of blank-plate valve according to claim 1; It is characterized in that; Be arranged at the valve plate of blank-plate valve and the seal ring between fixed valve base and the floating valve seat and be respectively two, and the first water ring groove and the second water ring groove lays respectively at and its corresponding two seal rings between.
3. the sealing configuration of blank-plate valve according to claim 1; It is characterized in that; Be communicated with through a plurality of through holes that pass the valve plate of blank-plate valve between the said first water ring groove and the second water ring groove; Said external water pipeline is a cover, and in the said first water ring groove and the second water ring groove one is communicated with said external water pipeline.
4. according to the sealing configuration of each described blank-plate valve among the claim 1-3, it is characterized in that the water that is sealed in the said first water ring groove and the second water ring groove is aqueous rust preventive.
5. according to the sealing configuration of each described blank-plate valve among the claim 1-3, it is characterized in that said seal ring is a rubber seal.
6. a blank-plate valve comprises fixed valve base, floating valve seat and valve plate, and said valve plate is arranged between said fixed valve base and the floating valve seat, it is characterized in that, also comprises the sealing configuration of each described blank-plate valve among the claim 1-6.
7. blank-plate valve according to claim 6 is characterized in that, said valve plate is a hollow structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102462112A CN102080731B (en) | 2009-11-26 | 2009-11-26 | Sealing structure of blind plate valve and blind plate valve containing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102462112A CN102080731B (en) | 2009-11-26 | 2009-11-26 | Sealing structure of blind plate valve and blind plate valve containing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102080731A CN102080731A (en) | 2011-06-01 |
| CN102080731B true CN102080731B (en) | 2012-11-28 |
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ID=44086857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102462112A Expired - Fee Related CN102080731B (en) | 2009-11-26 | 2009-11-26 | Sealing structure of blind plate valve and blind plate valve containing same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102080731B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2349413Y (en) * | 1998-10-15 | 1999-11-17 | 石家庄市阀门三厂 | Water sealing type butterfly valve |
| CN201221611Y (en) * | 2008-06-30 | 2009-04-15 | 付志会 | Blind plate valve of simple structure |
| CN201599425U (en) * | 2009-11-26 | 2010-10-06 | 秦皇岛秦冶重工有限公司 | Sealing structure of blind plate valve and blind plate valve provided with sealing structure |
-
2009
- 2009-11-26 CN CN2009102462112A patent/CN102080731B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2349413Y (en) * | 1998-10-15 | 1999-11-17 | 石家庄市阀门三厂 | Water sealing type butterfly valve |
| CN201221611Y (en) * | 2008-06-30 | 2009-04-15 | 付志会 | Blind plate valve of simple structure |
| CN201599425U (en) * | 2009-11-26 | 2010-10-06 | 秦皇岛秦冶重工有限公司 | Sealing structure of blind plate valve and blind plate valve provided with sealing structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102080731A (en) | 2011-06-01 |
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Granted publication date: 20121128 Termination date: 20211126 |