CN102352932A - Double-sealing mechanical type bleeding valve for gas holder - Google Patents
Double-sealing mechanical type bleeding valve for gas holder Download PDFInfo
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- CN102352932A CN102352932A CN201110288038XA CN201110288038A CN102352932A CN 102352932 A CN102352932 A CN 102352932A CN 201110288038X A CN201110288038X A CN 201110288038XA CN 201110288038 A CN201110288038 A CN 201110288038A CN 102352932 A CN102352932 A CN 102352932A
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Abstract
The invention discloses a double-sealing mechanical type bleeding valve for a gas holder, and the double-sealing mechanical type bleeding valve comprises a soft seal which is arranged between a valve base and a valve cover and a guide rail which is used for limiting the switching movement of the valve cover, wherein the valve base is provided with a water sealed tank which is arranged around the outer wall of the valve base for one circle and used for containing a sealing liquid; the valve cover is provided with a skirt plate which is matched with the water sealed tank and extends downward; the skirt plate is inserted into the liquid level of the water sealed tank when the valve cover is closed so that a water seal is formed; furthermore, a depth of inserting the skirt plate into the liquid level of the water sealed tank is less than a displacement formed by upwards moving the valve cover when the valve cover is opened. According to the bleeding valve, by arranging the water sealed tank and arranging the skirt plate on the valve cover, the skirt plate is inserted into the water sealed tank to form the water seal when the bleeding valve is closed, so that the water seal and the soft seal between the valve cover and the valve base form a double seal; and in addition, the depth of inserting the skirt plate into the water sealed tank is less than a distance formed by upwards moving the valve cover when the valve cover is opened, i.e., the water seal is automatically removed after the valve cover is opened. The double-sealing mechanical type bleeding valve provided by the invention is not only simple in structure but also is better in sealing performance and higher in reliability, and can be used for effectively preventing the gas in the gas holder from being leaked.
Description
Technical field
The present invention relates to a kind of mechanical type that is used for gas holder and diffuse valve, concrete diffuses valve for a kind of double seal mechanical type that is used for gas holder.
Background technique
Gas holder is used to store all gases medium; And floating top formula gas holder carries out handling up of gas in the cabinet through moving up and down of piston; When piston rises on the stroke in limited time, cause the gas holder structural damage for preventing to rush to summit because of piston, need in time open and diffuse valve and diffuse unnecessary gas in the cabinet.Be to guarantee the safety of gas holder, the gas holder diffusion system also need be provided with a cover mechanical type bleeding device except that the bleeding device of a cover by program-controlled valve control is set, subsequent use in the time of can't accomplishing coal gas diffusion to lose efficacy as program-controlled valve.
The mechanical type bleeding device is not having to utilize Der Grundsatz der Maschinen and mechanical structure under the program control chain prerequisite, reaches following function: the cut-out gas holder and the external world got in touch when gas holder normally moved, and prevented gas leakage; Prescribe a time limit when the gas holder piston reaches on the stroke, mechanical type diffuses valve and opens automatically, diffuses gas in the cabinet; Treat that piston drops in the safe travel range, that opens diffuses valve and can close automatically, recovers the reliable function of cutting off; Operator can be easy to open bleeding device and carry out gas displacement when overhauling the piston end of a year or month, and can recover gas holder and extraneous cut-out function.Service valve is set on the exhaust stack, cuts off gas holder and extraneous getting in touch when being used for pipeline and diffusing the valve maintenance, service valve often adopts water seal or butterfly valve.
At present, domestic existing machinery formula bleeding device generally adopts the dull and stereotyped valve gap of band shape seal ring under self gravitation, to cooperate with the flange-type valve seat, forms the soft seal of gas.This kind sealing mechanism is similar to the sealing pair that flange, seal ring and blind flange are formed, but causes the impacting force that can't provide enough because of threaded fastener can not be installed between valve gap and the valve seat, and the impacting force that only depends on valve gap gravity to provide then can't form reliable sealing.When gas holder normally moves, diffuse mouthful place's gas and have small leakage always, cause certain gas loss; When gas holder stores inflammable, explosive or toxic gas, leakage will cause potential safety hazard, even cause catastrophic failure.
As shown in Figure 5; For existing a kind of gas holder diffuses the valve arrangement schematic representation with mechanical type, this mechanical type diffuses the flat valve gap that valve comprises the flange-type valve seat that is installed in the diffuse channel top, is complementary with valve seat, the air scoop that is sleeved on the diffuse channel top, and the valve gap edge is provided with slide block; Be provided with the guide rail that is complementary with slide block between air scoop and the valve gap; Valve gap can move up and down along guide rail under the pulling of steel cable, and the bottom surface of valve gap is provided with seal ring; And seal ring is pressed on the valve seat under the action of gravity of valve gap self, forms the soft seal to gas.Though the valve that diffuses of this structure has the gas seal that can realize to a certain extent between the gas holder and the external world; But; Because seal ring only is pressed on the valve seat under the action of gravity of valve gap, can't guarantee the enough impacting forces to seal ring, the sealability reliability is low; Gas holder tends to occur gas leakage in the operation process, cause gas loss.
Therefore, the present invention is intended to that existing gas holder is diffused valve with mechanical type and improves, and through improving the structure that mechanical type diffuses valve, ability enhanced leaktightness performance improves sealing reliability, and can satisfy mechanical type and diffuse the requirement of diffusing of valve to gas.
Summary of the invention
The technical problem that the present invention will solve is to propose a kind of gas holder to diffuse valve with the double seal mechanical type, and it is not only simple in structure, and the gas that can satisfy gas holder diffuses requirement, and sealability is better, and reliability is higher, can effectively prevent the gas leakage in the gas holder.
In order to realize above-mentioned technical purpose; Gas holder of the present invention diffuses valve with the double seal mechanical type; Comprise the guide rail that is arranged on the soft seal between valve seat and the valve gap and is used to limit the valve gap switch movement; Said valve seat is provided with around valve seat outer wall one week and is used for the seal tank of splendid attire seal fluid; Said valve gap is provided with and is complementary with seal tank and to the skirtboard that extends below, and said skirtboard inserts when valve gap is closed under the liquid level of seal tank and forms water seal, and the displacement that moves up when opening less than valve gap of the skirtboard degree of depth of inserting the seal tank liquid level.
Further, said valve gap bottom surface is that the diameter ecto-entad dwindles the also curved surface of evagination gradually, and said valve seat is provided with the seal ring that is complementary with the valve gap bottom surface;
Further, said valve gap bottom surface is that the diameter ecto-entad increases the also curved surface of indent gradually, and said valve seat is provided with the seal ring that is complementary with the valve gap bottom surface;
Further, said valve seat top is provided with the curved surface that is complementary with the valve gap bottom surface, and said seal ring is arranged on the curved surface of valve seat top;
Further, the curtain plate of said seal tank extends upward the formation air scoop;
Further, the curtain plate of said seal tank is square or is circular;
Further, said guide rail comprise be uniformly distributed be arranged on the valve gap edge and be no less than two slide block and be arranged between air scoop and the valve gap and with the slide rail of the corresponding one by one setting of slide block;
Further, the top of said seal tank is provided with supply pipe;
Further, the bottom of said seal tank is provided with waste pipe;
Further, said seal tank liquid level place is provided with spill pipe.
Gas holder of the present invention diffuses valve with the double seal mechanical type and has following beneficial effect:
1, the present invention is through being provided with around the seal tank in one week of valve seat outer wall and the skirtboard that is complementary with seal tank is set on valve gap, and when diffusing valve and close, skirtboard inserts in the seal tank and forms water seal; And the soft seal between valve gap and the valve seat forms double seal, and skirtboard inserts the distance that moves upward when the interior degree of depth of seal tank is opened less than valve gap, after promptly valve gap is opened; Water seal automatically terminates; The gas that valve is diffused in realization diffuses function, and is not only simple in structure, and sealability is better; Reliability is higher; Can effectively prevent the gas leakage in the gas holder, gas holder of the present invention diffuses valve with the double seal mechanical type and has following function: through soft seal and water seal double seal, the reliable cut-out prevented gas leakage when gas holder normally moved; Prescribe a time limit when the gas holder piston reaches on the stroke, can cancel above-mentioned double seal immediately automatically, open and diffuse diffusing of the valve realization interior gas of cabinet; Treat that piston drops in the safe travel range, closed between valve gap and the valve seat, that opens diffuses valve and can close automatically, recovers above-mentioned double seal, and reliable the cut-out preventing gas leakage; Operator can send out open in bulk putting easily and carry out gas displacement, and can recover to diffuse the valve reliable sealing performance easily when overhauling the piston end of a year or month;
2, the valve gap bottom surface is set on curved surface and the valve seat of convex or concave the seal ring that is complementary with this curved surface is set, and the sealability of soft seal is better; The curtain plate of seal tank extends upward the formation air scoop, makes the dispersing gas body upwards to diffuse, the protection cabinet; Through supply pipe, offlet and spill pipe are set, can realize the function of liquid level height in water filling in seal tank, waterproof and the control seal tank on the seal tank curtain plate.
Description of drawings
Fig. 1 diffuses valve first embodiment's structural representation with the double seal mechanical type for gas holder of the present invention;
Fig. 2 is the plan view of Fig. 1;
Fig. 3 diffuses valve second embodiment's structural representation with the double seal mechanical type for gas holder of the present invention;
Fig. 4 diffuses the structural representation of the gas holder mechanical type bleeding device of valve for using the first embodiment of the invention gas holder with the double seal mechanical type;
Fig. 5 is the A-A sectional view of Fig. 4;
Fig. 6 is the B-B sectional view of Fig. 4.
Description of reference numerals:
The 1-valve seat; The 2-valve gap; The 3-seal tank; The 4-seal fluid; The 5-skirtboard; The 6-seal ring; The 7-curtain plate; The 8-air scoop; The 9-slide block; The 10-slide rail; The 11-supply pipe; The 12-offlet; The 13-spill pipe; The 14-push rod; 15-stator ring I; 16-stator ring II; The movable guide wheel of 17-; The 18-steel cable; 19-stator ring III; 20-stator ring IV; The 21-limiting and guiding device; The 22-winch; The 23-indicator collet; The 24-exhaust stack.
Embodiment
Do detailed explanation below in conjunction with the accompanying drawing specific embodiments of the invention.
Be illustrated in figure 1 as gas holder of the present invention diffuses valve first embodiment with the double seal mechanical type structural representation; Fig. 2 is the plan view of Fig. 1; The gas holder of present embodiment diffuses valve with the double seal mechanical type and comprises the guide rail that is arranged on the soft seal between valve seat 1 and the valve gap 2 and is used to limit valve gap 2 switch movement; Valve seat 1 is provided with around valve seat 1 outer wall one week and is used for the seal tank 3 of splendid attire seal fluid 4; Said valve gap 2 is provided with and is complementary with seal tank 3 and to the skirtboard that extends below 5, and said skirtboard 5 inserts when valve gap 2 is closed under the liquid level of seal tank 3 and forms water seal, and the displacement S that moves up when opening less than valve gap 2 of skirtboard 5 depth H of inserting seal tanks 3 liquid levels.
The gas holder of present embodiment diffuses valve through being provided with around the seal tank 3 in valve seat one week of 1 outer wall and the skirtboard 5 that is complementary with seal tank 3 is set with the double seal mechanical type on valve gap 2, when diffusing valve and close, the liquid level that skirtboard 5 inserts seal tanks 3 forms water seal in down; And the soft seal between valve gap 2 and the valve seat 1 forms double seal, and skirtboard 5 inserts the displacement S that moves upward when the seal tank 3 interior degree of depth are opened less than valve gap 2, after promptly valve gap 2 is opened; Water seal automatically terminates; The gas that valve is diffused in realization diffuses function, and is not only simple in structure, and sealability is better; Reliability is higher, can effectively prevent the gas leakage in the gas holder.
The gas holder of present embodiment diffuses valve with the double seal mechanical type and has following function: through soft seal and water seal double seal, the reliable cut-out prevented gas leakage when gas holder normally moved; Prescribe a time limit when the gas holder piston reaches on the stroke, can cancel above-mentioned double seal immediately automatically, open and diffuse diffusing of the valve realization interior gas of cabinet; Treat that piston drops in the safe travel range, closed between valve gap 2 and the valve seat 1, that opens diffuses valve and can close automatically, recovers above-mentioned double seal, and reliable the cut-out preventing gas leakage; The piston end of a year or month, the bleeding device that operator can send out format embodiment easily carried out gas displacement, and can recover to diffuse the valve reliable sealing performance easily when overhauling.
Further; Valve gap 2 bottom surfaces are that the diameter ecto-entad dwindles and the curved surface of evagination or increase gradually and the curved surface of indent for the diameter ecto-entad gradually; Valve seat 1 is provided with the seal ring 6 that is complementary with valve gap 2 bottom surfaces; Valve gap 2 bottom surfaces of present embodiment are the diminishing outer convex surface of diameter ecto-entad, and the soft seal of adopting this structure cooperates with curved surface between the valve gap 2 through valve seat 1, has self between the curved surface and adjusts the function that is sealed and matched; Can make that the sealing reliability of soft seal is higher, sealing effect is better.
Further, the curtain plate 7 of seal tank 3 extends upward and forms air scoop 8, and air scoop 8 has the effect of gas flow guiding; And air scoop is for 8 times a seal tank 3, is loaded with seal fluid 4 in the seal tank 3, and gas can not overflow downwards; Can protect gas holder, preferred, the curtain plate 7 of seal tank 3 is square or is circular; It is identical with seal tank square or circular that the curtain plate 3 of air scoop 8 of promptly expiring is, and seal tank 3 curtain plates 7 of present embodiment are set to circle, can make that the water conservancy diversion effect of air scoop 8 is better.
Further; Guide rail comprise be uniformly distributed be arranged on valve gap 2 edges and be no less than two slide block 9 and be arranged between air scoop 8 and the valve gap 2 and with the slide rail 10 of the corresponding one by one setting of slide block 9; The slide block of present embodiment is set to 4, and slide rail 10 adopts the angle steel that is fixedly connected with seal tank 3 curtain plates 7 on one side, and the middle part of slide block 9 is provided with the groove that is complementary with angle steel; Carry out gas when diffusing diffusing valve; Valve gap 2 moves up under the qualification effect of guide rail, can guarantee valve gap 2 motions steadily, can prevent that again valve gap 2 from swinging in movement process.
Further; The top of seal tank 3 is provided with supply pipe 11, and in order in seal tank 3, to inject seal fluid 4, the bottom of seal tank 3 is provided with waste pipe 12; Be used to emit the seal fluid 4 in the seal tank 3; Seal tank 3 liquid level places are provided with spill pipe 13, and spill pipe 13 can limit the liquid level height in the seal tank 3, and the assurance water seal can effectively be removed when valve gap 2 is opened.
As shown in Figure 3; Diffuse valve second embodiment's structural representation with the double seal mechanical type for gas holder of the present invention; Valve gap 2 bottom surfaces that the gas holder of present embodiment uses the double seal mechanical type to diffuse valve increase the also curved surface of indent gradually as the diameter ecto-entad, and valve seat 1 top is provided with the curved surface that is complementary with valve gap 2 bottom surfaces, and seal ring 6 is arranged on the valve seat 2 top curved surfaces; The soft seal of adopting this structure cooperates with curved surface between the valve gap 2 through valve seat 1; Have self between the curved surface and adjust the function that is sealed and matched, can make that the sealing reliability of soft seal is higher, sealing effect is better; And, can make that the sealability between valve seat 1 and the valve gap 2 is better through the curved surface that is complementary with valve gap 2 is set on valve seat 1 top.
Other structures of present embodiment are identical with first embodiment, tired no longer one by one stating.
As shown in Figure 4, diffuse the structural representation of the gas holder mechanical type bleeding device of valve with the double seal mechanical type for using the first embodiment of the invention gas holder; Fig. 5 is the A-A sectional view of Fig. 4; Fig. 6 is the B-B sectional view of Fig. 4.Gas holder mechanical type bleeding device comprises that gas holder diffuses valve, is used for jacking system that is complementary with the gas holder piston and the guide wheel group that is complementary with jacking system with the double seal mechanical type, and jacking system is the push rod 14 that is complementary with piston; Guide wheel group comprises and is arranged on the two stator ring I 15 that diffuse the valve top; Be installed on the cabinet top board and be positioned at the stator ring II 16 at push rod 14 two ends; Be provided with the movable guide wheel 17 that is installed in push rod 14 tops between the two stator ring II 16; Steel cable 18 links to each other with valve gap 2 through guide wheel group one end, and the other end then links to each other with winch 22 with limiting and guiding device 21 through movable guide wheel 17, stator ring II 16, stator ring III 19, stator ring IV 20, also is provided with indicator collet 23 on the steel cable 18.
When surpassing on the stroke, the gas holder piston prescribes a time limit; Piston touches movable guide wheel 17 rises of push rod 14 lower ends with push rod 14 upper ends; Valve gap 2 is mentioned in the guiding transmission of passing through stator ring I 15, stator ring II 16 of steel cable 18, makes the lower limb of skirtboard 5 break away from the liquid level of the seal fluid 4 in the seal tank 3; Automatically diffuse cabinet and emit unnecessary gas through exhaust stack 24, the direction of diffusing of gas is diffused under the guide functions of air scoop 8 straight up; When piston drops to the stroke upper limit when following; The movable guide wheel 17 corresponding declines of push rod 14 and upper end thereof also reset; Valve gap 2 is resetting under its gravity and seal ring 6 is being pressed on the valve seat 1, recovers the soft seal of gas, and realization water seals in the seal tank 3 are inserted in skirtboard 5 declines.
When overhaul gas container, operator can pass through winch 22, tighten up steel cable 18 and carry out gas purging displacement in the cabinet to mention valve gap 2, discharge steel cable 18, valve gap 1 compresses valve seat 1 again and recovers gas under its action of gravity soft seal and water seal after purging is accomplished; Limiting and guiding device 21 can prevent valve gap 2 by the La Detaigao getaway, and can in jacking system makes progress the jack-up process, keep the steel cable 18 between limiting and guiding device 21 and the winch 22 fixed; Eye-catching indicator collet 23 is installed, so that observe the action of steel cable 18 on the steel cable 18.
Explanation is at last; Above embodiment is only unrestricted in order to technological scheme of the present invention to be described; Although with reference to preferred embodiment the present invention is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement technological scheme of the present invention; And not breaking away from the aim and the scope of technological scheme of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (10)
1. a gas holder diffuses valve with the double seal mechanical type; Comprise the guide rail that is arranged on the soft seal between valve seat (1) and the valve gap (2) and is used to limit valve gap (2) switch movement; It is characterized in that: said valve seat (1) is provided with around valve seat (1) outer wall one week and is used for the seal tank (3) of splendid attire seal fluid (4); Said valve gap (2) is provided with seal tank (3) and is complementary and to the skirtboard that extends below (5); Said skirtboard (5) inserts when closing at valve gap (2) and forms water seal under the liquid level of seal tank (3), and the displacement that moves up when opening less than valve gap (2) of skirtboard (5) degree of depth of inserting seal tank (3) liquid level.
2. gas holder according to claim 1 diffuses valve with the double seal mechanical type; It is characterized in that: said valve gap (2) bottom surface is that the diameter ecto-entad dwindles the also curved surface of evagination gradually, and said valve seat (1) is provided with the seal ring (6) that is complementary with the valve gap bottom surface.
3. gas holder according to claim 1 diffuses valve with the double seal mechanical type; It is characterized in that: said valve gap (2) bottom surface is that the diameter ecto-entad increases the also curved surface of indent gradually, and said valve seat (1) is provided with the seal ring (6) that is complementary with the valve gap bottom surface.
4. diffuse valve according to claim 2 or 3 described gas holders with the double seal mechanical type, it is characterized in that: said valve seat top is provided with the curved surface that is complementary with the valve gap bottom surface, and said seal ring (6) is arranged on the curved surface of valve seat (1) top.
5. gas holder according to claim 1 diffuses valve with the double seal mechanical type, it is characterized in that: the curtain plate (7) of said seal tank (3) extends upward and forms air scoop (8).
6. gas holder according to claim 5 diffuses valve with the double seal mechanical type, it is characterized in that: the curtain plate of said seal tank (7) is square or is circular.
7. gas holder according to claim 6 diffuses valve with the double seal mechanical type, it is characterized in that: said guide rail comprise be uniformly distributed be arranged on valve gap (2) edge and be no less than two slide block (9) and be arranged between air scoop (8) and the valve gap (2) and with the slide rail (10) of the corresponding one by one setting of slide block (9).
8. gas holder according to claim 1 diffuses valve with the double seal mechanical type, it is characterized in that: the top of said seal tank (3) is provided with supply pipe (11).
9. gas holder according to claim 8 diffuses valve with the double seal mechanical type, it is characterized in that: the bottom of said seal tank (3) is provided with waste pipe (12).
10. gas holder according to claim 8 diffuses valve with the double seal mechanical type, it is characterized in that: said seal tank (3) liquid level place is provided with spill pipe (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110288038XA CN102352932A (en) | 2011-09-26 | 2011-09-26 | Double-sealing mechanical type bleeding valve for gas holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110288038XA CN102352932A (en) | 2011-09-26 | 2011-09-26 | Double-sealing mechanical type bleeding valve for gas holder |
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| Publication Number | Publication Date |
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| CN102352932A true CN102352932A (en) | 2012-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110288038XA Pending CN102352932A (en) | 2011-09-26 | 2011-09-26 | Double-sealing mechanical type bleeding valve for gas holder |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615586A (en) * | 2013-12-04 | 2014-03-05 | 西峡龙成特种材料有限公司 | Improved air pipe liquid metal sealing valve for high temperature environment |
| CN103629381A (en) * | 2013-12-04 | 2014-03-12 | 西峡龙成特种材料有限公司 | Gas pipeline liquid metal sealing valve for high-temperature environment |
| CN106931176A (en) * | 2017-02-28 | 2017-07-07 | 中冶华天南京工程技术有限公司 | Blast furnace opens diffusion valve with flexible |
| CN107642630A (en) * | 2017-11-03 | 2018-01-30 | 宝钢工程技术集团有限公司 | Gas chamber gas bleeding valve |
| CN107676631A (en) * | 2017-11-14 | 2018-02-09 | 中车资阳机车有限公司 | A kind of wet-type relief device on high temperature, minute-pressure, filthy gas pipeline |
| CN108071931A (en) * | 2016-11-14 | 2018-05-25 | 上海梅山钢铁股份有限公司 | A kind of constant cabinet of Wiggins gas holder houses changing device and method of replacing |
| CN103321601B (en) * | 2013-07-03 | 2018-08-03 | 张树华 | A kind of method and its device of Operating Pressure well transformation sealed medium |
| CN109939626A (en) * | 2019-03-28 | 2019-06-28 | 潜江方圆钛白有限公司 | The double-sealing device and its encapsulating method for preventing hydrolytic decomposition pot tank mouth steam from leaking |
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| JPH1136854A (en) * | 1997-07-15 | 1999-02-09 | Kubota Corp | Exhaust gas drain device of stationary type engine |
| CN201284334Y (en) * | 2008-06-12 | 2009-08-05 | 吴建清 | Methane cement structured gas storing apparatus |
| CN201547330U (en) * | 2009-09-30 | 2010-08-11 | 武汉焦耐工程技术有限公司 | Water-sealed valve |
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| FR2235319A1 (en) * | 1973-06-27 | 1975-01-24 | Roechling Burbach Gmbh Stahl | |
| JPH1136854A (en) * | 1997-07-15 | 1999-02-09 | Kubota Corp | Exhaust gas drain device of stationary type engine |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321601B (en) * | 2013-07-03 | 2018-08-03 | 张树华 | A kind of method and its device of Operating Pressure well transformation sealed medium |
| CN103615586A (en) * | 2013-12-04 | 2014-03-05 | 西峡龙成特种材料有限公司 | Improved air pipe liquid metal sealing valve for high temperature environment |
| CN103629381A (en) * | 2013-12-04 | 2014-03-12 | 西峡龙成特种材料有限公司 | Gas pipeline liquid metal sealing valve for high-temperature environment |
| CN103615586B (en) * | 2013-12-04 | 2016-06-01 | 西峡龙成特种材料有限公司 | A kind of hot environment gas pipeline liquid metal seal valve |
| CN103629381B (en) * | 2013-12-04 | 2016-09-14 | 西峡龙成特种材料有限公司 | A kind of hot environment gas pipeline liquid metal seals valve |
| CN108071931A (en) * | 2016-11-14 | 2018-05-25 | 上海梅山钢铁股份有限公司 | A kind of constant cabinet of Wiggins gas holder houses changing device and method of replacing |
| CN106931176A (en) * | 2017-02-28 | 2017-07-07 | 中冶华天南京工程技术有限公司 | Blast furnace opens diffusion valve with flexible |
| CN106931176B (en) * | 2017-02-28 | 2022-11-22 | 中冶华天南京工程技术有限公司 | Expansion opening blow-off valve for blast furnace |
| CN107642630A (en) * | 2017-11-03 | 2018-01-30 | 宝钢工程技术集团有限公司 | Gas chamber gas bleeding valve |
| CN107676631A (en) * | 2017-11-14 | 2018-02-09 | 中车资阳机车有限公司 | A kind of wet-type relief device on high temperature, minute-pressure, filthy gas pipeline |
| CN109939626A (en) * | 2019-03-28 | 2019-06-28 | 潜江方圆钛白有限公司 | The double-sealing device and its encapsulating method for preventing hydrolytic decomposition pot tank mouth steam from leaking |
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Application publication date: 20120215 |