CN104329472A - High-temperature flap valve - Google Patents
High-temperature flap valve Download PDFInfo
- Publication number
- CN104329472A CN104329472A CN201410650208.8A CN201410650208A CN104329472A CN 104329472 A CN104329472 A CN 104329472A CN 201410650208 A CN201410650208 A CN 201410650208A CN 104329472 A CN104329472 A CN 104329472A
- Authority
- CN
- China
- Prior art keywords
- transmission
- transmission case
- shaft
- bearing
- turnover panel
- 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.)
- Granted
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/20—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation arranged externally of valve member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention provides a high-temperature flap valve, which comprises a valve body, a seal flap, a transmission case, a flap swing arm, a pneumatic driving device and a balance weight, wherein the seal flap is connected with the transmission case through the flap swing arm; the transmission case is arranged on the valve body; the inlet of the valve body is provided with a seal ring; the seal flap is provided with at least one layer of concentric ring seal cutter; the cross section of the at least one layer of ring seal cutter is in the shape of a trapezoid; moreover, the upper edge of the trapezoid is extremely narrow and forms a sharp seal face; under the condition that substances, such as tar and dust, are bonded to the surface of the seal ring, the ring seal cutter can be shoveled into the substances, and is tightly fitted with the seal ring at the inlet of the valve body under the drive of the pneumatic driving device; a shaft transmission system I and a shaft transmission system II in the transmission case are connected with the flap swing arm through keys. The high-temperature flap valve provided by the invention has the beneficial effects that the high-temperature flap valve is arranged at the joint of a gas up take and a crossover main, can be reliably opened and closed under high-temperature and severe working conditions, and meets the requirement on the airtightness of gas pipelines.
Description
Technical field
The present invention relates to high temperature crude gas pipeline valve field, particularly relate to a kind of high-temperature flap valve.
Background technique
At present, coal can produce the high temperature raw coke oven gas that large amount temperature is 750-950 DEG C in coke oven high temperature carbonization process, traditional technique sprays a large amount of 70-75 DEG C cyclic ammonia water at the bridge tube place connecting asending pipe and gas collecting tube, cyclic ammonia water heat absorption evaporation makes raw gas temperature reduce, and enters postorder Coal Chemical Industry Product recycling processing workshop section.A large amount of heat energy that raw coke oven gas is taken out of in this process are not utilized, and as directly derived by this part high temperature raw coke oven gas, passing into exhaust heat boiler and carrying out heat exchange, and the medium-pressure or high pressure steam produced can be used for generating, and then can bring more economic value.
In the UTILIZATION OF VESIDUAL HEAT IN technique of raw coke oven gas, need the break-make being controlled raw coke oven gas by the valve be arranged in gaspipe line off and on, therefore need at high temperature still can reliably opening and closing for this part valve, and meets corresponding tightness.In traditional gaspipe line, multiplex butterfly valve controls the break-make of raw coke oven gas, and be arranged on the bridge tube after raw coke oven gas asending pipe, but be doped with a large amount of coal tar oil and dust in raw coke oven gas, be easily bonded on valve when temperature variation, cause valve opening and closing action malfunctioning.Therefore, in raw coke oven gas UTILIZATION OF VESIDUAL HEAT IN technique, need one both high temperature resistant, again can still can the valve of reliable opening and closing under the operating mode of very severe.
Summary of the invention
The object of this invention is to provide a kind of high-temperature flap valve, be arranged on the joint of raw coke oven gas asending pipe and bridge tube, can reliable opening and closing under high temperature and severe operating mode, and meet the sealing requirements of gaspipe line.
For achieving the above object, the present invention realizes by the following technical solutions:
A kind of high-temperature flap valve, comprise valve body, sealing turnover panel, transmission case, turnover panel swing arm, pneumatic actuating device, counterweight, described sealing turnover panel is connected with transmission case by turnover panel swing arm, and transmission case is arranged on valve body; Cylinder in described pneumatic actuating device is hinged on valve body, and swinging arms of cylinder is connected with a transmission shaft of transmission case; Described counterweight is connected with another transmission shaft of transmission case; At valve body, inlet is provided with seal ring, described sealing turnover panel has the concentric ring-shaped seals cutterhead being no less than one deck, described ring packing cutterhead cross section is trapezoidal, and trapezoidal top is extremely narrow, form sharp sealing surface, when there being the material such as tar and dust to be bonded in seal ring surface, ring packing cutterhead can shovel into wherein, fit tightly with described valve body inlet seal ring under the driving of pneumatic actuating device, be not more than the operating mode of 0.01MPa at crude gas pipeline internal air pressure under, form effective sealing; Described transmission case comprises shaft transmission system one, shaft transmission system two, setting sleeve, transmission case body, castable refractory; shaft transmission system one and shaft transmission system two are arranged in transmission case; be connected with turnover panel swing arm by key; turnover panel swing arm is socketed setting sleeve; castable refractory is filled with between transmission case body and setting sleeve, shaft transmission system one, shaft transmission system two; setting sleeve embeds among castable refractory, turnover panel swing arm location is played simultaneously to the effect of protection.
Described shaft transmission system one comprises transmission shaft one, bearing support, bearing (ball) cover, sliding bearing, stuffing box packing case, end cover, graphite packing, axle sleeve, in one end that transmission shaft one is connected with turnover panel swing arm, be socketed with axle sleeve, stuffing box packing case is welded on transmission case body, and axle sleeve and setting sleeve are located fixing, between stuffing box packing case and transmission shaft one, graphite packing is installed successively, end cover, end cover is fixed by screws on transmission case body, one end that transmission shaft one stretches out transmission case is provided with sliding bearing, bearing support, bearing (ball) cover, bearing support is fixed on transmission case body, bearing (ball) cover is fixed on bearing support.
Described shaft transmission system two comprises transmission shaft two, bearing support, bearing (ball) cover, sliding bearing, stuffing box packing case, end cover, graphite packing, axle sleeve, in one end that transmission shaft two is connected with turnover panel swing arm, be socketed with axle sleeve, stuffing box packing case is welded on transmission case body, and axle sleeve and setting sleeve are located fixing, between stuffing box packing case and transmission shaft two, graphite packing is installed successively, end cover, end cover is fixed by screws on transmission case body, one end that transmission shaft two stretches out transmission case is provided with sliding bearing, bearing support, bearing (ball) cover, bearing support is fixed on transmission case body, bearing (ball) cover is fixed on bearing support.
Compared with prior art, the invention has the beneficial effects as follows:
1) medium temperature can reach 750-950 DEG C, the valve body of band castable refractory thermal-protective coating, and heat loss is little, and thermal distortion is little; 2) structure of turnover panel is not by the impact of tar bonding in crude gas pipeline, and traditional butterfly valve structure is when there being tar to bond, and because caliber attenuates, now the valve plate of butterfly valve cannot rotate; 3) sealing configuration that ring packing cutterhead and seal ring form seals reliably; 4) transmission case compact structure, can be separated with valve body, is convenient to the I&M of transmission case and sealing valve plate; 5) adopt pneumatic actuating device, opposing hydraulic or motorized motions more safe and reliable, can seal pressure be remained; 6) use of counterweight can ensure when drive unit breaks down, and valve still can reliably be closed.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of high-temperature flap valve embodiment of the present invention;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the A-A sectional view of Fig. 2, the closed condition of display valve;
Fig. 4 is the A-A sectional view of Fig. 2, the opening state of display valve;
Fig. 5 is the close-up schematic view of C point in Fig. 3;
Fig. 6 is the B-B sectional view of Fig. 4, the internal structure of a kind of high-temperature flap valve transmission case of display the present invention;
In figure: 1-valve body 2-transmission case 3-pneumatic actuating device 4-access door 5-counterweight 6-seals turnover panel 7-seal ring 8-valve shell 9-castable refractory thermal-protective coating 10-turnover panel swing arm 11-transmission shaft one 12-bearing (ball) cover 13-sliding bearing 14-bearing support 15-transmission case body 16-end cover 17-stuffing box packing case 18-graphite packing 19-axle sleeve 20-setting sleeve 21-castable refractory 22-transmission shaft two 23-swinging arms of cylinder 24-key 25-wedge key
Embodiment
Below in conjunction with Figure of description, the present invention is described in detail, but it should be noted that enforcement of the present invention is not limited to following mode of execution.
As shown in figures 1 to 6, a kind of high-temperature flap valve, comprise valve body 1, sealing turnover panel 6, transmission case 2, turnover panel swing arm 10, pneumatic actuating device 3, counterweight 5, sealing turnover panel 6 is connected with transmission case 2 by turnover panel swing arm 10, and transmission case 2 is arranged on valve body 1; Cylinder in pneumatic actuating device 3 is hinged on valve body 1, and swinging arms of cylinder 23 is connected with a transmission shaft of transmission case 2; Counterweight 5 is connected with another transmission shaft of transmission case 2; See Fig. 3, Fig. 4, Fig. 5, at valve body 1, inlet is provided with seal ring 7, sealing turnover panel 6 has two-layer concentric ring packing cutterhead, ring packing cutterhead cross section is trapezoidal, and trapezoidal top is extremely narrow, form sharp sealing surface, when there being the material such as tar and dust to be bonded in seal ring surface, ring packing cutterhead can shovel into wherein, fit tightly with valve body 1 inlet seal ring 7 under the driving of pneumatic actuating device 3, be not more than the operating mode of 0.01MPa at crude gas pipeline internal air pressure under, form effective sealing; See Fig. 6; transmission case 2 comprises shaft transmission system one, shaft transmission system two, setting sleeve 20, transmission case body 15, castable refractory 21; shaft transmission system one and shaft transmission system two are arranged in transmission case 2; be connected with turnover panel swing arm 10 by key 24; turnover panel swing arm 10 is socketed setting sleeve 20; castable refractory 21 is filled with between transmission case body 15 and setting sleeve 20, shaft transmission system one, shaft transmission system two; setting sleeve 20 embeds in 21 of castable refractory, turnover panel swing arm 10 is located to the effect simultaneously playing protection.
As shown in Figure 6, shaft transmission system one comprises transmission shaft 1, bearing support 14, bearing (ball) cover 12, sliding bearing 13, stuffing box packing case 17, end cover 16, graphite packing 18, axle sleeve 19, in one end that transmission shaft 1 is connected with turnover panel swing arm 10, be socketed with axle sleeve 19, stuffing box packing case 17 is welded on transmission case body 15, and axle sleeve 19 and setting sleeve 20 are located fixing, between stuffing box packing case 17 and transmission shaft 1, graphite packing 18 is installed successively, end cover 16, end cover 16 is fixed by screws on transmission case body 15, one end that transmission shaft 1 stretches out transmission case 2 is provided with sliding bearing 13, bearing support 14, bearing (ball) cover 12, bearing support 14 is fixed on transmission case body 15, bearing (ball) cover 12 is fixed on bearing support 14.
As shown in Figure 6, shaft transmission system two comprises transmission shaft 2 22, bearing support 14, bearing (ball) cover 12, sliding bearing 13, stuffing box packing case 17, end cover 16, graphite packing 18, axle sleeve 19, in one end that transmission shaft 2 22 is connected with turnover panel swing arm 10, be socketed with axle sleeve 19, stuffing box packing case 17 is welded on transmission case body 15, and axle sleeve 19 and setting sleeve 20 are located fixing, between stuffing box packing case 17 and transmission shaft 2 22, graphite packing 18 is installed successively, end cover 16, end cover 16 is fixed by screws on transmission case body 15, one end that transmission shaft 2 22 stretches out transmission case 2 is provided with sliding bearing 13, bearing support 14, bearing (ball) cover 12, bearing support 14 is fixed on transmission case body 15, bearing (ball) cover 12 is fixed on bearing support 14.
Leave gap between transmission shaft 1 and transmission shaft 2 22, for absorb transmission shaft be heated after axial expansion amount.
Graphite packing 18 and axle sleeve 19 are housed in stuffing box packing case 17, stability of rotation and the seal request of transmission shaft can be met.
Transmission case 2 internal structure is compact, and inside is filled with castable refractory 21, and resistance to heat is good, and shaft transmission system one and shaft transmission system two detachably, are convenient to the installation sealing turnover panel 6.With bolts between transmission case 2 and valve body 1, facilitate the installation of transmission case 2.
See Fig. 4, Fig. 5, sealing turnover panel 6 passes through pinned connection with turnover panel swing arm 10.
See Fig. 1, Fig. 2, pneumatic actuating device 3 comprises cylinder, swinging arms of cylinder 23, bearing support is fixed with by screw thread at cylinder piston boom end, sliding bearing is established in bearing support, in sliding bearing, axle is installed, the two ends of axle and one end of swinging arms of cylinder are connected and fixed, and the other end of swinging arms of cylinder 23 is connected and fixed by wedge key 25 and the transmission shaft 1 in transmission case 2.
When cylinders retract, seal ring 7 fits tightly with sealing turnover panel 6, and now valve closing, is shown in Fig. 3, and when cylinder stretches out, turnover panel swing arm 10 is with motive sealing turnover panel 6 to be separated with seal ring 7, and now valve open, is shown in Fig. 4.
Counterweight 5 is fixed with counterweight swing arm, counterweight swing arm is fixedly connected with the transmission shaft 2 22 in transmission case 2 by wedge key 25.When pneumatic actuating device 3 breaks down time, counterweight 5 can ensure that valve is in closed condition.
As shown in Figure 3, Figure 4, valve body 1 comprises valve shell 8, castable refractory thermal-protective coating 9, and castable refractory thermal-protective coating 9 is arranged on valve shell 8 inwall.
Valve body 1 is also provided with access door 4, is connected with bolt between access door 4 with valve body 1, for installing and maintenance sealing turnover panel 6.
Claims (3)
1. a high-temperature flap valve, comprise valve body, sealing turnover panel, transmission case, turnover panel swing arm, pneumatic actuating device, counterweight, described sealing turnover panel is connected with transmission case by turnover panel swing arm, and transmission case is arranged on valve body; Cylinder in described pneumatic actuating device is hinged on valve body, and swinging arms of cylinder is connected with a transmission shaft of transmission case; Described counterweight is connected with another transmission shaft of transmission case; It is characterized in that, at valve body, inlet is provided with seal ring, described sealing turnover panel has the concentric ring-shaped seals cutterhead being no less than one deck, described ring packing cutterhead cross section is trapezoidal, and trapezoidal top is extremely narrow, form sharp sealing surface, when there being the material such as tar and dust to be bonded in seal ring surface, ring packing cutterhead can shovel into wherein, fit tightly with described valve body inlet seal ring under the driving of pneumatic actuating device, be not more than the operating mode of 0.01MPa at crude gas pipeline internal air pressure under, form effective sealing; Described transmission case comprises shaft transmission system one, shaft transmission system two, setting sleeve, transmission case body, castable refractory; shaft transmission system one and shaft transmission system two are arranged in transmission case; be connected with turnover panel swing arm by key; turnover panel swing arm is socketed setting sleeve; castable refractory is filled with between transmission case body and setting sleeve, shaft transmission system one, shaft transmission system two; setting sleeve embeds among castable refractory, turnover panel swing arm location is played simultaneously to the effect of protection.
2. a kind of high-temperature flap valve according to claim 1, it is characterized in that, described shaft transmission system one comprises transmission shaft one, bearing support, bearing (ball) cover, sliding bearing, stuffing box packing case, end cover, graphite packing, axle sleeve, in one end that transmission shaft one is connected with turnover panel swing arm, be socketed with axle sleeve, stuffing box packing case is welded on transmission case body, and axle sleeve and setting sleeve are located fixing, between stuffing box packing case and transmission shaft one, graphite packing is installed successively, end cover, end cover is fixed by screws on transmission case body, one end that transmission shaft one stretches out transmission case is provided with sliding bearing, bearing support, bearing (ball) cover, bearing support is fixed on transmission case body, bearing (ball) cover is fixed on bearing support.
3. a kind of high-temperature flap valve according to claim 1, it is characterized in that, described shaft transmission system two comprises transmission shaft two, bearing support, bearing (ball) cover, sliding bearing, stuffing box packing case, end cover, graphite packing, axle sleeve, in one end that transmission shaft two is connected with turnover panel swing arm, be socketed with axle sleeve, stuffing box packing case is welded on transmission case body, and axle sleeve and setting sleeve are located fixing, between stuffing box packing case and transmission shaft two, graphite packing is installed successively, end cover, end cover is fixed by screws on transmission case body, one end that transmission shaft two stretches out transmission case is provided with sliding bearing, bearing support, bearing (ball) cover, bearing support is fixed on transmission case body, bearing (ball) cover is fixed on bearing support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410650208.8A CN104329472B (en) | 2014-11-14 | 2014-11-14 | A kind of high-temperature flap valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410650208.8A CN104329472B (en) | 2014-11-14 | 2014-11-14 | A kind of high-temperature flap valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104329472A true CN104329472A (en) | 2015-02-04 |
| CN104329472B CN104329472B (en) | 2016-09-07 |
Family
ID=52404246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410650208.8A Active CN104329472B (en) | 2014-11-14 | 2014-11-14 | A kind of high-temperature flap valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104329472B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112066008A (en) * | 2020-09-11 | 2020-12-11 | 广东韶钢松山股份有限公司 | Manual adjusting device of coke oven gas collecting pipe |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5377954A (en) * | 1993-12-06 | 1995-01-03 | Adams Gmbh & Co. Armaturen Kg | Valve with seal ring having edge-welded laminations |
| CN2436740Y (en) * | 2000-08-08 | 2001-06-27 | 黄作兴 | Check valve for vapour pumping |
| CN101131212A (en) * | 2007-10-13 | 2008-02-27 | 中冶焦耐工程技术有限公司 | Lean gas reversal valve for coke oven |
| CN201166125Y (en) * | 2008-02-01 | 2008-12-17 | 深圳市清泉水业股份有限公司 | Flap valve |
| CN102252106A (en) * | 2011-07-22 | 2011-11-23 | 世林（漯河）冶金设备有限公司 | Link type cutoff butterfly valve of blast furnace |
| CN202612675U (en) * | 2012-04-18 | 2012-12-19 | 中冶南方工程技术有限公司 | Blast furnace top seal valve |
| CN202691083U (en) * | 2012-06-14 | 2013-01-23 | 中冶焦耐工程技术有限公司 | High-temperature butterfly valve for preventing tar from agglutinating |
| CN203395290U (en) * | 2013-07-25 | 2014-01-15 | 芜湖市华益阀门制造有限公司 | Small-caliber counter weight type check valve |
| CN204267752U (en) * | 2014-11-14 | 2015-04-15 | 中冶焦耐工程技术有限公司 | A kind of high-temperature flap valve |
-
2014
- 2014-11-14 CN CN201410650208.8A patent/CN104329472B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5377954A (en) * | 1993-12-06 | 1995-01-03 | Adams Gmbh & Co. Armaturen Kg | Valve with seal ring having edge-welded laminations |
| CN2436740Y (en) * | 2000-08-08 | 2001-06-27 | 黄作兴 | Check valve for vapour pumping |
| CN101131212A (en) * | 2007-10-13 | 2008-02-27 | 中冶焦耐工程技术有限公司 | Lean gas reversal valve for coke oven |
| CN201166125Y (en) * | 2008-02-01 | 2008-12-17 | 深圳市清泉水业股份有限公司 | Flap valve |
| CN102252106A (en) * | 2011-07-22 | 2011-11-23 | 世林（漯河）冶金设备有限公司 | Link type cutoff butterfly valve of blast furnace |
| CN202612675U (en) * | 2012-04-18 | 2012-12-19 | 中冶南方工程技术有限公司 | Blast furnace top seal valve |
| CN202691083U (en) * | 2012-06-14 | 2013-01-23 | 中冶焦耐工程技术有限公司 | High-temperature butterfly valve for preventing tar from agglutinating |
| CN203395290U (en) * | 2013-07-25 | 2014-01-15 | 芜湖市华益阀门制造有限公司 | Small-caliber counter weight type check valve |
| CN204267752U (en) * | 2014-11-14 | 2015-04-15 | 中冶焦耐工程技术有限公司 | A kind of high-temperature flap valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112066008A (en) * | 2020-09-11 | 2020-12-11 | 广东韶钢松山股份有限公司 | Manual adjusting device of coke oven gas collecting pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104329472B (en) | 2016-09-07 |
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Effective date of registration: 20180726 Address after: 116085 128 high energy street, Qixian Ling high tech Industrial Park, Dalian, Liaoning Patentee after: ACRE Coking And Refractory (Dalian) Engineering Consulting Corp., MCC Address before: 116085 128 high energy street, Qixian Ling high tech Industrial Park, Dalian, Liaoning Patentee before: ACRE Coking and Refractory Engineering Consulting Corporation, MCC |
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