CN102278592B - Anti-oil spill mechanical discharge device for gasometer sealed by thin oil - Google Patents
Anti-oil spill mechanical discharge device for gasometer sealed by thin oil Download PDFInfo
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- CN102278592B CN102278592B CN 201110246284 CN201110246284A CN102278592B CN 102278592 B CN102278592 B CN 102278592B CN 201110246284 CN201110246284 CN 201110246284 CN 201110246284 A CN201110246284 A CN 201110246284A CN 102278592 B CN102278592 B CN 102278592B
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Abstract
The invention discloses an anti-oil spill mechanical discharge device for a gasometer sealed by thin oil, comprising a discharge hole, a discharge pipeline communicated with the discharge hole, a valve seat arranged on the top end of the discharge pipeline, a valve cover matched with the valve seat, a lever fixedly connected to the valve cover, a pulley block arranged on a top plate of the gasometer, an ejector pin and a steel rope, wherein the ejector pin and the steel rope are penetrated through the top plate of the gasometer and vertically arranged. The valve seat is hinged with the valve cover via a valve shaft; the lever is located on a radial extending line on which the connecting line of the centre of the valve shaft and the centre of the discharge pipeline is; the pulley block comprises a movable idler pulley and at least one fixed idler pulley; one end of the steel rope is connected with the remote end of one side of the lever far away from the valve cover while the other end of the steel rope is fixedly connected to the top plate of the gasometer via the upper edge of the movable idler pulley after bypassing the fixed idler pulley; the top end of the ejector pin is connected with the movable idler pulley; and the lower end of the ejector pin is matched with a lift limiting position of a piston of the gasometer. The discharge device has the capabilities of realizing oil-gas separation, avoiding the loss of a large amount of seal oil and preventing the pollution of the seal oil on the body of the gasometer and surrounding environments.
Description
Technical field
The present invention relates to a kind of bleeding device that is used for gas cabinet, concrete is a kind of oily mechanical type bleeding device of anti-race that is used for the thin oil seal gas holder.
Background technique
The thin oil seal gas holder is for utilizing the one type gas cabinet of sealing oil (thin oil) as main or auxiliary seal medium; Be different from water, rubber membrane and drier oil fat gas cabinet as sealing medium; The air pressure of stored-gas reaches relative equilibrium realization sealing surface place and effectively seals in the hydraulic pressure of thin oil seal gas holder through certain liquid level sealing oil in the piston oil duct and the cabinet, prevents gas leakage.
The thin oil seal gas holder through moving up and down of piston, carries out handling up of gas in the cabinet, when piston rises on the stroke in limited time, causes the gas holder structural damage for preventing to rush to summit because of piston, need in time open to 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 when losing efficacy as program-controlled valve.
At present, the mechanical type bleeding device of domestic existing thin oil seal gas holder generally all adopts simple emergency diffusion pipe, i.e. perforate on the side plate at piston stroke upper limit place, and this plane, perforate place is the section that diffuses on the side plate.Perforate is to be opened in the aperture that diffuses the marshalling on the section, and damage sealing surface when preventing that seal arrangement from slipping over is like the drop bar of graceful formula cabinet, the caulking gum of novel cabinet etc.The side plate that diffuses section is provided with circle or the square pipe that communicates with aperture outward, and pipeline vertically extends to cabinet top safety and diffuses the zone.
Like Fig. 1-shown in Figure 3, be the structural representation of the mechanical type bleeding device of existing thin oil seal gas holder, when piston was in the normal travel scope, the emergency diffusion pipe was in the piston upper air environment, does not contact with coal gas; When reaching on the normal travel, piston prescribes a time limit; When being sealing surface lower edge point (like the caulking gum bottom surface of the drop bar lower edge of graceful formula cabinet, novel cabinet etc.) slides past side panel tapping, gas arrives cabinet through side plate perforate and pipeline immediately and pushes up the safety zone and diffuse in the cabinet.Because sealing surface is in the piston oil duct; Before sealing surface lower edge point arrives the side plate perforate; Sealing oil in the piston oil duct gets in the pipeline of side plate outer wall through the side plate perforate, and to be sealed lower edge point slips over tapping, and the gas that diffuses will carry ducted sealing oil arrival cabinet top and diffuse.This kind carries diffusing of sealing oil, not only loses a large amount of sealing oil, and pollutes cabinet and surrounding enviroment.
Application number is that the Chinese patent of CN200810070123.7 discloses a kind of emergency diffusion system; This emergency diffusion system is equipped with section of cyclone separator at the emergency diffusion mouth; And be connected with cyclone inlet, the cyclone separator gas outlet is installed gas outlet tube and rainhat; Outlet pipe one end after the sealing oil of cyclone separator reclaims is installed on the sidewall of gas holder.Though this emergency diffusion system possesses the effect of Oil-gas Separation to a certain extent; But, still can carry a certain amount of sealing oil and go out, in addition because gas in the cabinet and sealing oil are diffused toward the outside simultaneously; The coal gas diffusion resistance of this coal gas diffusion system is bigger, influences coal gas diffusion efficient.
Therefore, need do improvement, improve its structure, it can be diffused at gas realize Oil-gas Separation in the process existing gas holder machinery bleeding device, a large amount of sealing oil of avoidable loss not only, and can prevent that the sealing oil that sprays from polluting cabinet and surrounding enviroment.
Summary of the invention
The technical problem that the present invention will solve is to propose a kind of thin oil seal gas holder with the oily mechanical type bleeding device of anti-race; This bleeding device is not only simple in structure; And can realize Oil-gas Separation, avoid losing a large amount of sealing oil and pollute cabinet and surrounding enviroment with the sealing oil that prevents to spray.
Realize above-mentioned technical purpose; Thin oil seal gas holder of the present invention with anti-run oily mechanical type bleeding device comprise diffuse the hole, with the valve gap, the lever that is fixedly connected with valve gap that diffuse the diffuse channel that the hole communicates, the valve seat that is installed in the diffuse channel top, be complementary with valve seat, be installed in sheave block on the gas holder top board, run through the push rod and the steel cable of gas holder top board and vertical installation; Hinged between said valve seat and the valve gap through valve shaft; Said lever is positioned on the radially line stretcher at valve shaft and diffuse channel line of centres place; Said sheave block comprises a movable guide wheel and at least one stator ring; Said steel cable one end links to each other with the far-end of lever away from valve gap one side; The upper limb that the other end is walked around stator ring and the movable guide wheel of process is fixedly connected with the gas holder top board, and the top of said push rod links to each other with movable guide wheel, and the rising limit position of the lower end of push rod and gas holder piston is complementary.
Further, also comprise apparatus for examination and repair, said apparatus for examination and repair comprises bearing that is fixedly mounted on diffuse channel top and the maintenance steel cable that links to each other with bearing, and said maintenance steel cable can link to each other with the far-end away from valve gap of lever; The structure of said apparatus for examination and repair can also for, comprise bearing that is fixedly mounted on the gas holder top board and the maintenance steel cable that links to each other with bearing, said maintenance steel cable can link to each other with the far-end of lever away from valve gap;
Further, said stator ring is two, is installed in the both sides of movable guide wheel respectively;
Further, also comprise the sleeve that is sleeved on the push rod, said sleeve is fixedly mounted on the gas holder top board;
Further, said valve shaft is positioned at the side near the gas holder cabinet;
Further, be provided with seal arrangement between said valve gap and the valve seat, said seal arrangement comprises at least one seal ring, and said valve seat is provided with the sealed groove that is complementary with seal ring, and said seal ring is installed in the sealed groove;
Further, the bottom of said diffuse channel is set to diffuse the inclined tube that the hole is a low spot.
Thin oil seal gas holder of the present invention has following beneficial effect with the oily mechanical type bleeding device of anti-race:
1, the valve seat and the valve gap of mutual coupling are set through the top at diffuse channel, and lever and valve shaft and pulley gear are set come unlatching and closure between application valve cover and the valve seat, when the gas holder piston motion behind preset height; Piston is upwards made push rod, and the push rod drive steel cable that moves upward is under the leading role of sheave block; The steel cable pull lever also drives the valve gap unlatching, carries out gas and diffuses, when piston descends; Push rod moves downward; Under the action of gravity of valve gap, be fulcrum with the valve shaft, the valve gap closure is also pressed the seal arrangement on the valve seat; Because diffusing hole 1 is arranged under the piston limit travel; And the mechanical type bleeding device is when being positioned at the piston limit position, to open to diffuse; Therefore, can't diffuse immediately gas in the cabinet after getting into diffuse channel; Obtain a piston and move to buffer time of limit travel from diffusing hole 1, during this period of time the gas in the diffuse channel keeps static relatively, and the sealing oil that therefore gets in the diffuse channel can pass back in the gas holder smoothly; Realize Oil-gas Separation, avoid losing a large amount of sealing oil and pollute cabinet and surrounding enviroment with the sealing oil that prevents to spray;
2, through apparatus for examination and repair is set, when bleeding device need overhaul and piston is diffusing when moving under the hole, can the maintenance steel cable be linked to each other with the end of lever away from valve gap, make valve gap be held open state, easy access.
Description of drawings
Fig. 1 is in the sectional view when not diffusing for original bleeding device;
Fig. 2 is in the sectional view that diffuses threshold state for original bleeding device;
Fig. 3 is in the sectional view of the state of diffusing for original bleeding device;
Fig. 4 is bleeding device embodiment's of the present invention structural representation;
Fig. 5 diffuses the sectional view during contact seal oil of hole for the bleeding device of present embodiment;
Fig. 6 diffuses hole not contact seal oil and the sectional view when being in maintenance for the bleeding device of present embodiment;
Sectional view when sealing oil got into pipeline before Fig. 7 diffused for the bleeding device of present embodiment is in;
Sectional view when sealing oil was returned in the cabinet before Fig. 8 diffused for the bleeding device of present embodiment is in;
Fig. 9 is in sectional view when diffusing state for the bleeding device of present embodiment;
Figure 10 is in sectional view when diffusing done state for the bleeding device of present embodiment;
Figure 11 is that the bleeding device of present embodiment is in sectional view when diffusing back sealing oil entering pipeline;
Figure 12 is that the bleeding device of present embodiment is in sectional view when diffusing back sealing oil return piston oil duct.
Description of reference numerals:
1-diffuses the hole; The 2-diffuse channel; The 3-valve gap; The 4-valve seat; The 5-seal ring; The 6-valve shaft; The 7-lever; The 8-steel cable; The 9-stator ring; The movable guide wheel of 10-; The 11-push rod; The 12-hook; 13-overhauls steel cable; The 14-bearing; 15-piston oil duct; 16-oil duct liquid level; 17-piston seal face; The 18-piston; 19-gas holder cabinet top.
Embodiment
Elaborate below in conjunction with the accompanying drawing specific embodiments of the invention.
As shown in Figure 4; Be the structural representation of thin oil seal gas holder of the present invention with the anti-oily mechanical type bleeding device embodiment of race, present embodiment thin oil seal gas holder with anti-run oily mechanical type bleeding device comprise diffuse hole 1, with the valve gap 3, the lever 7 that is fixedly connected with valve gap 3 that diffuse the diffuse channel 2 that hole 1 communicates, the valve seat 4 that is installed in diffuse channel 2 tops, be complementary with valve seat 4, be installed in sheave block on the gas holder top board, run through the push rod 11 and the steel cable 8 of gas holder top board and vertical installation.Hinged through valve shaft 6 between valve seat 4 and the valve gap 3, valve gap 3 can be opened with respect to valve seat 4 through valve shaft 6 at valve shaft 6 places, and lever 7 is positioned on the radially line stretcher at valve shaft 6 and diffuse channel 2 lines of centres place, and the moment of torsion that promptly acts on the lever 7 can make valve gap 3 open.Sheave block comprises a movable guide wheel 10 and at least one stator ring; Steel cable one end links to each other with the far-end of lever 7 away from valve gap 3 one sides; The other end is walked around stator ring after the upper limb of movable guide wheel 10 is fixedly connected with gas holder top board 19; The top of push rod 11 links to each other with movable guide wheel 10, and the rising limit position of the lower end of push rod 11 and gas holder piston is complementary, and the push rod 11 and the movable guide wheel 10 of this enforcement are articulated and connected.
The valve seat 4 and valve gap 3 of mutual coupling are set through the top at diffuse channel 2, and lever 7 and valve shaft 6 and pulley gear are set come unlatching and closure between application valve cover 3 and the valve seat 4, when the gas holder piston motion behind the height of presetting; Piston is upwards made push rod 11, and push rod 11 moves upward and drives steel cable 8, under the leading role of sheave block; Steel cable 8 pull lever 7 also drive valve gap 3 unlatchings, and when piston descended, push rod 11 moved downward; Under the action of gravity of valve gap 3, be fulcrum with valve shaft 6, valve gap 3 closures; Can realize that so just valve gap 3 is opened and diffused when piston motion during to the precalculated position.
Further; The bleeding device of present embodiment also is provided with apparatus for examination and repair; Apparatus for examination and repair can have two kinds of structural types: first kind of structure; Apparatus for examination and repair comprises bearing 14 that is fixedly mounted on diffuse channel 2 tops and the maintenance steel cable 13 that links to each other with bearing 14, and maintenance steel cable 13 can link to each other with the far-end away from valve gap 3 of lever 7; Second kind of structure of apparatus for examination and repair: apparatus for examination and repair comprises bearing 14 that is fixedly mounted on the gas holder top board and the maintenance steel cable 13 that links to each other with bearing 14, and said maintenance steel cable 13 can link to each other with the far-end of lever 7 away from valve gap 3.The bleeding device of present embodiment adopts the apparatus for examination and repair of first kind of structure, through apparatus for examination and repair is set, when bleeding device need overhaul, maintenance steel cable 13 is linked to each other with the far-end of lever 7 away from valve gap 3, makes valve gap 3 be held open state, easy access.
Further; Stator ring can be set to two; And be installed in the both sides of movable guide wheel 10 respectively, steel cable 8 is walked around the bottom of two stator rings respectively and the upper limb of movable guide wheel 10 is connected with gas holder top board 19 with lever 7 respectively, and stator ring can also only be provided with one; The lower edge of stator ring 9 walked around by steel cable 8 after the upper limb of movable guide wheel 10 is connected with gas holder top board 19, and the stator ring of present embodiment is set to one.
Further, outside push rod 11, also be set with sleeve, sleeve is fixedly mounted on the gas holder top board 19, and is more steady in the time of through sleeve is set push rod 11 being moved up and down.
Further, valve shaft 6 is positioned at the side near the gas holder cabinet, when valve gap 3 is opened, and diffusing mouthful towards the outside of gas holder cabinet between valve gap 3 and the valve seat 4, gas diffuses outside cabinet, can protect the gas holder cabinet.
Further; Be provided with seal arrangement between valve gap 3 and the valve seat 4; Said seal arrangement comprises at least one seal ring, and said valve seat 4 is provided with the sealed groove that is complementary with seal ring 5, and said seal ring 9 is installed in the sealed groove; The seal arrangement of present embodiment is provided with two seals circle 5, can prevent gas leakage between valve gap 3 and the valve seat 4 through seal arrangement is set.
Further, it is the inclined tube of low spot that the bottom of diffuse channel 2 is set to diffuse hole 1, and the convenient sealing oil that get in the diffuse channel 2 reflux and gas channeling when being convenient to diffuse.
Thin oil seal gas holder in the face of present embodiment elaborates with anti-working procedure of running oily mechanical type bleeding device down.
Diffuse hole 1 and be opened in program control diffusing on the side plate of locating the corresponding cabinet of opening of valves position, be generally 95% place of piston stroke.The height L1 of opening area that diffuses hole 1 is less than the height L2 of piston seal face 17; To prevent that piston seal face 17 from slipping over when diffusing hole 1; Gas directly is communicated with in the cabinet of the piston oil duct 15 on sealing surface 17 tops and sealing surface 17 bottoms, cause in the piston oil duct 15 sealing oil bleed in the cabinet with gas holder in gas leakage to piston top.
It is following with the corresponding relation of cabinet position that gas holder program control diffused, machinery diffuses: for normal operation, be generally below 95% of piston total travel when piston moves below oil duct liquid level 16 is lower than the stroke that diffuses hole 1 lower limb; When gas got into gas holder continuously, piston rose, and when arriving total travel 90%, locking system sends the acousto-optic early warning, opens the program-controlled valve on the inlet pipeline; When arriving total travel 95%, locking system sends acoustooptic alarm, closes the program-controlled valve on the inlet pipeline and opens the program control valve that diffuses; If the program control valve that diffuses breaks down and can't move, and piston is when reaching total travel 100% (being limit position), and mechanical type diffuses automatic triggering, carries out diffusing of gas in the cabinet.
Like Fig. 5 and shown in Figure 6, when piston oil duct liquid level 16 is positioned at when diffusing under the hole 1, bleeding device is a closed condition; Diffuse hole 1 and be in the air ambient, but the diffusing control valve unit of maintainer's repair and maintenance this moment, and the maintainer is through lever 7; Utilize lever principle to open valve gap 3; The hook 12 that will be arranged on again on the maintenance steel cable 13 tangles the far-end of lever 7 away from valve gap 3 one sides, to keep the opening state of valve gap 3, is convenient to the maintenance of valve body.
As shown in Figure 7: piston continue to rise, and piston oil duct liquid level 16 at first covers and diffuses hole 1, and the sealing oil in the piston oil duct 15 get in the diffuse channel 2 through diffusing hole 1, and bleeding device still is in closed condition and does not have gas and diffuse.
As shown in Figure 8: when piston seal face 17 lower edges point is crossed when diffusing hole 1; Diffuse channel 2 and the interior gas communication of cabinet; Gas gets in the diffuse channel 2 from diffusing hole 1, still compresses seal ring 5 and keeps gas seal in the cabinet because valve gap 3 overcomes in the pipe gas pressure under self gravitation, and diffuse channel 2 interior gases are in relative static conditions; Therefore sealing oil can reflux and fall into the bottom oil duct in the diffuse channel 2, realizes Oil-gas Separation.
As shown in Figure 9: when piston 18 reached the limit position of total travel 100%, piston touched push rod 11 lower ends, and the movable guide wheel 10 that links to each other with push rod 11 upper ends is risen; Steel cable 8 is through the guiding transmission of stator ring 9, and pull lever 7 is opened valve gap 3 under the effect of lever principle; Diffuse unnecessary gas in the cabinet, in addition, valve gap 3 forms through valve shaft 6 with valve seat 4 and diffuses angle; Can surpass this angle of height adjusting of total travel according to piston, and then regulate the amount of diffusing and diffuse speed, valve shaft 6 is positioned at the side near the gas holder cabinet; Discharging opening between valve gap 3 and the valve seat 4 is towards the outside of gas holder cabinet, and gas diffuses to the cabinet outside, can protect the gas holder cabinet.
Shown in figure 10: when piston 18 drops to total travel 100% when following, push rod 11 descends with movable guide wheel 10 and also resets, and valve gap 3 overcomes under action of gravity that gas pressure compresses the seal ring 5 formation gas seals on the valve seat 4 again in the pipe.
Shown in figure 11: when piston drops to total travel 95% when following; Piston seal face 17 lower edges point is reduced to and is diffused the hole below 1; Diffuse channel 2 and the interior shut off gas of cabinet, and diffuse channel 2 is communicated with piston seal oil, sealing oil gets in the diffuse channel 2 through diffusing hole 1.
Shown in figure 12: piston 18 continues to drop to piston oil duct 15 liquid levels and is lower than when diffusing hole 1, and the sealing oil in the diffuse channel 2 refluxes again and falls into the piston oil duct.
Can know that to sum up piston rises to machinery in the normal travel scope and diffuses, drop to again in the whole process in the normal travel scope that the mechanical type that had both reached unnecessary gas diffuses, avoid the sealing oil ejection again and the loss and the environmental pollution that cause.
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 (8)
1. a thin oil seal gas holder is with the oily mechanical type bleeding device of anti-race; Comprise diffuse hole (1) and with diffuse the diffuse channel (2) that hole (1) communicates; It is characterized in that; Valve gap (3), the lever (7) that is fixedly connected with valve gap (3) that also comprises the valve seat (4) that is installed in diffuse channel (2) top, is complementary with valve seat (4), be installed in the sheave block on the gas holder top board, push rod (11) and the steel cable (8) that runs through the gas holder top board and vertically install; Hinged between said valve seat (4) and the valve gap (3) through valve shaft (6); Said lever (7) is positioned on the radially line stretcher at valve shaft (6) and diffuse channel (2) line of centres place; Said sheave block comprises movable guide wheel (10) and at least one stator ring, and said steel cable one end links to each other with the far-end of lever away from valve gap (3) one sides, and the upper limb that the other end is walked around stator ring and the movable guide wheel of process (10) is fixedly connected with the gas holder top board; The top of said push rod (11) links to each other with movable guide wheel (10), and the lower end of push rod (11) and the rising limit position of gas holder piston are complementary.
2. thin oil seal gas holder according to claim 1 is with the oily mechanical type bleeding device of anti-race; It is characterized in that: also comprise apparatus for examination and repair; Said apparatus for examination and repair comprises bearing (14) that is fixedly mounted on diffuse channel top and the maintenance steel cable (13) that links to each other with bearing (14), and said maintenance steel cable (13) can link to each other with the far-end away from valve gap (3) of lever (7).
3. thin oil seal gas holder according to claim 1 is with the oily mechanical type bleeding device of anti-race; It is characterized in that: also comprise apparatus for examination and repair; Said apparatus for examination and repair comprises bearing (14) that is fixedly mounted on the gas holder top board and the maintenance steel cable (13) that links to each other with bearing (14), and said maintenance steel cable (13) can link to each other with the far-end of lever (7) away from valve gap (3).
4. use the anti-oily mechanical type bleeding device that runs according to each described thin oil seal gas holder of claim 1-3, it is characterized in that: said stator ring is two, is installed in the both sides of movable guide wheel respectively.
5. use the anti-oily mechanical type bleeding device that runs according to each described thin oil seal gas holder of claim 1-3, it is characterized in that: also comprise the sleeve that is sleeved on the push rod (11), said sleeve is fixedly mounted on the gas holder top board.
6. use the anti-oily mechanical type bleeding device that runs according to each described thin oil seal gas holder of claim 1-3, it is characterized in that: said valve shaft (6) is positioned at the side near the gas holder cabinet.
7. use the anti-oily mechanical type bleeding device that runs according to each described thin oil seal gas holder of claim 1-3; It is characterized in that: be provided with seal arrangement between said valve gap (3) and the valve seat (4); Said seal arrangement comprises at least one seal ring; Said valve seat (4) is provided with the sealed groove that is complementary with seal ring, and said seal ring is installed in the sealed groove.
8. use the anti-oily mechanical type bleeding device that runs according to each described thin oil seal gas holder of claim 1-3, it is characterized in that: it is the inclined tube of low spot that the bottom of said diffuse channel (2) is set to diffuse hole (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110246284 CN102278592B (en) | 2011-08-25 | 2011-08-25 | Anti-oil spill mechanical discharge device for gasometer sealed by thin oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110246284 CN102278592B (en) | 2011-08-25 | 2011-08-25 | Anti-oil spill mechanical discharge device for gasometer sealed by thin oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102278592A CN102278592A (en) | 2011-12-14 |
| CN102278592B true CN102278592B (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110246284 Expired - Fee Related CN102278592B (en) | 2011-08-25 | 2011-08-25 | Anti-oil spill mechanical discharge device for gasometer sealed by thin oil |
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| CN (1) | CN102278592B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108692177A (en) * | 2017-04-07 | 2018-10-23 | 上海宝冶集团有限公司 | POC moulded coal gas holders |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2106276U (en) * | 1990-06-25 | 1992-06-03 | 冶金工业部武汉钢铁设计研究院 | Spherical gas cut-off valve for gravity dust remover |
| JP2003114000A (en) * | 2001-10-05 | 2003-04-18 | Yoshio Suetsugu | Multistage dry seal gas holder |
| CN201206632Y (en) * | 2008-05-19 | 2009-03-11 | 宝山钢铁股份有限公司 | Seal dump valve of electrohydraulic push rod |
| CN102213359A (en) * | 2011-04-14 | 2011-10-12 | 中冶赛迪工程技术股份有限公司 | Sealing device for gas tank |
-
2011
- 2011-08-25 CN CN 201110246284 patent/CN102278592B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2106276U (en) * | 1990-06-25 | 1992-06-03 | 冶金工业部武汉钢铁设计研究院 | Spherical gas cut-off valve for gravity dust remover |
| JP2003114000A (en) * | 2001-10-05 | 2003-04-18 | Yoshio Suetsugu | Multistage dry seal gas holder |
| CN201206632Y (en) * | 2008-05-19 | 2009-03-11 | 宝山钢铁股份有限公司 | Seal dump valve of electrohydraulic push rod |
| CN102213359A (en) * | 2011-04-14 | 2011-10-12 | 中冶赛迪工程技术股份有限公司 | Sealing device for gas tank |
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| CN102278592A (en) | 2011-12-14 |
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