CN106979361A - A kind of liquid-seal type back-fire relief isolating device - Google Patents
A kind of liquid-seal type back-fire relief isolating device Download PDFInfo
- Publication number
- CN106979361A CN106979361A CN201710326925.9A CN201710326925A CN106979361A CN 106979361 A CN106979361 A CN 106979361A CN 201710326925 A CN201710326925 A CN 201710326925A CN 106979361 A CN106979361 A CN 106979361A
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- Prior art keywords
- liquid
- inner tube
- combustion gas
- pipe
- hollow
- 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.)
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- 239000000567 combustion gas Substances 0.000 claims abstract description 38
- 239000007787 solid Substances 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 239000007789 gas Substances 0.000 claims abstract description 13
- 239000012530 fluid Substances 0.000 claims description 7
- 241000973497 Siphonognathus argyrophanes Species 0.000 claims description 3
- 241001344919 Aulichthys japonicus Species 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 7
- 238000005260 corrosion Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 239000002737 fuel gas Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000006378 damage Effects 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000003628 erosive effect Effects 0.000 description 3
- 238000005496 tempering Methods 0.000 description 3
- 238000013475 authorization Methods 0.000 description 2
- 230000009172 bursting Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
Classifications
-
- 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
- F16K13/00—Other constructional types of cut-off apparatus; Arrangements for cutting-off
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The present invention relates to combustion gas emptying safeguard field, specifically a kind of liquid-seal type back-fire relief isolating device, including device tank body, described device tank inner chamber center is provided with hollow inner tube, on the hollow outer wall of inner tube described device tank body is connected by connecting solid separator, described device tank inner chamber is divided into the upper chamber mutually completely cut off and lower chambers by the solid separator, upper chamber's tank wall is provided with combustion gas interface, the lower chambers tank wall is provided with emptying tower interface, the lower end of described device tank body is additionally provided with blow-off line, the blow-off line is provided with transfusion branch pipe and blind plate.The present invention can thoroughly isolate contact of the combustion gas with air, it is to avoid aqueous vapor, humid air etc. enter in blow-down pipe to pipeline, the corrosion of valve arrangement and the gas accidentses that may occur, and device is durable, easy to maintenance, liquid level regulation monitoring is convenient.
Description
Technical field
The present invention relates to combustion gas emptying safeguard field, specifically a kind of liquid-seal type back-fire relief isolating device.
Background technology
Conventional diffusion valve uses electric and pneumatic valve, and being turned on and off for diffusion valve is controlled by control system,
Need to be equipped with pressure sensor and complicated control system, in addition it is also necessary to consume electric energy or compressed air, if necessary to back-fire relief function,
Must also optional equipment spark arrester.Also there are the wet-type relief valve that bursting membrane is installed on wet type spark arrester, but this in the prior art
Planting the application of diffusion valve can be but subject to certain restrictions due to the character of use of bursting membrane.
Authorization Notice No. is CN102506205B, and authorized announcement date is discloses one kind in 2013.04.24 patent of invention
In wet-type self-resetting fire-retarding blow off valve, but the scheme of the invention, the air pressure and water to gas medium need to be carried out using multiple casings
Pressure is adjusted, and water consumption is big, area occupied is big, there is provided multiple level sensors, cost of manufacture are high, and air inlet pipe and emptying
Pipeline enclosure only has air inlet tube wall and is separated by, and due to admission line, some is arranged in flashback tank so that when this segment pipe is long
Between in humidity, pressure and mixed gas complex environment under, accelerate aging corruption speed, be even more when there is tempering phenomenon
Secondary injury can not be avoided.
Traditional spark arrester is during giving out of gas, though fire insulation can be carried out well, it is to avoid caused loss during tempering
And harm, but during the diffusing of combustion gas, the mixing backflow of combustion gas, aqueous vapor and air can cause corruption to equipment such as diffusion valves
Erosion, reduces the service life of equipment.
Authorization Notice No. is CN204784920U, and authorized announcement date is discloses in 2015.11.18 utility model patent
It is a kind of for fuel gas dry purification devices drain water seal structure, using the inner tube mouth of pipe set gas outlet, air discharge duct with
And the filtering of water level is exhausted, but in the program, emptying tracheae is straight to outer barrel barrel, because the gentle body of combustion gas emptying air pressure is mixed
The effect of compound, the abrasion and corrosion of outer barrel are accelerated, and have impact on the service life of whole device, and whole device is using process
In, due to the fixation of draining open height, when being vented combustion gas air pressure fluctuation, the adjustment to water level is also inconvenient, when by returning
When top gas is pressed so that height of water level is too low, there is harm and loss that tempering phenomenon can not then avoid it from bringing.
The content of the invention
For the deficiency in prior art, the invention is intended to provide it is a kind of can thoroughly isolate contact of the combustion gas with air, keep away
Exempt from aqueous vapor, humid air etc. to enter in exhausting pipeline, corrosion to pipeline, to equipment such as valves and the gas accidentses that may occur,
And device is durable, easy to maintenance, a kind of convenient liquid-seal type back-fire relief isolating device of liquid level regulation monitoring.
In order to solve the above problems, the present invention proposes a kind of liquid-seal type back-fire relief isolating device, including device tank body, the dress
Tank inner chamber center is put to be provided with hollow inner tube, the hollow outer wall of inner tube by connecting solid separator connection described device tank
Described device tank inner chamber is divided into the upper chamber mutually completely cut off and lower chambers by body, the solid separator, positioned at the lower chambers
The interior hollow inner tube mouth of pipe side wall is provided with baffle plate provided with some exhaust outlets, front, and the exhaust outlet is immersed in described
In device tank body lower chambers liquid, on upper chamber's tank wall close to the solid separator be provided with combustion gas interface, it is described under
Close to the solid separator provided with emptying tower interface on chamber tank wall, emptying gas are entered described by the combustion gas interface
Upper chamber, the lower chambers are entered by the hollow inner tube, via entering the emptying after the bottom chamber liquid
Tower interface, the lower end of described device tank body is additionally provided with blow-off line, and the blow-off line is provided with transfusion branch pipe, and lower end is additionally provided with
Blind plate.
Preferably, the hollow inner tube, which is located in the upper chamber, protuberance, the protuberance top is in level side
Height is opened up with the combustion gas interface upwards to maintain an equal level, dorsad the combustion gas interface is provided with flow-guiding mouth to the hollow inner tube.
Preferably, the flow-guiding mouth can be inclined to set, inclined side is with the hollow inner pipe wall angulation
45°-60°。
Preferably, the flow-guiding mouth may be alternatively provided as a groove for running through the hollow inner tube top, the groove is set
Direction is put to be mutually perpendicular to the combustion gas interface setting direction.
Preferably, described device tank wall is provided with smooth guide rod, the smooth guide rod provided with addition funnel and
Fluid level scale, the addition funnel is provided with capping, and side wall is provided with overflow pipe, and the addition funnel lower end is connected by connecting flexible pipe
The blow-off line transfusion branch pipe is connect, is connected between the flexible pipe and the transfusion branch pipe by screw thread ball valve.
Preferably, the baffle plate may be configured as a part for the hollow inner tube, the exhaust outlet is symmetrically opened in institute
State on hollow inner pipe wall.
Preferably, the hollow inner tube can also be connected by nose end by four bar strips of the well-balanced setting of mouth of pipe quadrantal points
The baffle plate.
Using above-mentioned preferred scheme, compared with prior art, the present invention has advantages below：1st, combustion gas interface and emptying
Tower interface is provided with solid separator, and by carrying out fluid injection to addition funnel hollow inner tube can be caused to be in fluid-tight state, uses
When no matter how the pressure difference of combustion gas incoming end changes, can thoroughly avoid contact of the combustion gas with air, it is to avoid gaseous mixture is flowed back to
The harm flowed the corrosion to equipment and caused when being tempered；2nd, hollow pipe correspondence fuel gas inlet, which is provided with, tilts flow-guiding mouth, and
Length correspondence fuel gas inlet, it is to avoid the importing of directly washing away and facilitate gas of the fuel gas flow to tank interior, hollow pipe
Baffle plate is set at the exhaust of lower end, while avoiding erosion corrosion of the fuel gas flow to tank body lower end sewage draining exit position, tank body is improved
Overall service life, and it is easy to the maintaining in device later stage；The 3rd, smooth guide rod and addition funnel are set, and addition funnel is logical
Cross flexible pipe connection blow-off line, liquid feeding convenient, and by overflow pipe and the height of addition funnel can be controlled to control tank interior
Liquid level, be prevented effectively from aqueous and flow into exhausting pipeline.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
These accompanying drawings obtain other accompanying drawings.
Fig. 1：Liquid-seal type back-fire relief isolating device structural representation；
Fig. 2：The preferably molded-in structural representation one of isolating device；
Fig. 3：The preferably molded-in structural representation two of isolating device；
Wherein：1. device tank body, 11, smooth guide rod, 12, solid separator, 13, combustion gas interface, 14, emptying tower interface, 15, blowdown
Pipeline, 151, blind plate, 152, transfusion branch pipe, 2, addition funnel, 21, capping, 22, overflow pipe, 23, flexible pipe, 231, screw thread ball valve,
3rd, hollow inner tube, 31, baffle plate, 32, bar strip, 4, liquid level signal.
Embodiment
Below in conjunction with the accompanying drawing in the present invention, technical scheme is clearly and completely described, it is clear that
A part of embodiment of the described only present invention, rather than whole embodiments.Based on the embodiment in the present invention, sheet
The every other embodiment that field those of ordinary skill is obtained on the premise of creative work is not paid, belongs to this hair
The scope of bright protection.
Embodiment one：
Described a kind of liquid-seal type back-fire relief isolating device, including device tank body 1 as shown in the figure, the inner chamber of described device tank body 1 center
Provided with hollow inner tube 3, described device tank body 1 is connected by connecting solid separator 12 on the hollow outer wall of inner tube 3, it is described solid
The inner chamber of described device tank body 1 is divided into the upper chamber mutually completely cut off and lower chambers by dividing plate 12, positioned at described in the bottom chamber
The hollow mouth of pipe side wall of inner tube 3 is provided with baffle plate 31 provided with some exhaust outlets, front, and the exhaust outlet is immersed in described device tank
In the lower chambers liquid of body 1, combustion gas interface 13, the cavity of resorption are provided with close to the solid separator 12 on upper chamber's tank wall
Close to the solid separator 12 provided with emptying tower interface 14 on the tank wall of room, emptying gas are entered by the combustion gas interface 13
The upper chamber, the lower chambers are entered by the hollow inner tube 3, described via being entered after the bottom chamber liquid
Tower interface 14 is vented, the lower end of described device tank body 1 is additionally provided with blow-off line 15, and the blow-off line 15 is provided with transfusion branch pipe
152, lower end is additionally provided with blind plate 151.
The hollow inner tube 3, which is located in the upper chamber, a protuberance, the protuberance top in the horizontal direction with institute
State combustion gas interface 13 and open up and highly maintain an equal level, dorsad the combustion gas interface 13 is provided with flow-guiding mouth, the flow-guiding mouth to the hollow inner tube 3
It can be inclined to set, inclined side is to be set on 45 ° -60 °, the side wall of described device tank body 1 with the hollow inner pipe wall angulation
There is smooth guide rod 11, the smooth guide rod 11 is provided with addition funnel 2 and fluid level scale, and the addition funnel 2 is provided with capping 21,
Side wall is provided with overflow pipe 22, and the lower end of addition funnel 2 connects the blow-off line transfusion branch pipe by connecting flexible pipe 23
152, it is connected between the flexible pipe 23 and the transfusion branch pipe 152 by screw thread ball valve 231, the baffle plate 31 is described hollow interior
A part for pipe 3, the exhaust outlet is symmetrically opened on the tube wall of hollow inner tube 3.
Embodiment two：
Described a kind of liquid-seal type back-fire relief isolating device, including device tank body 1 as shown in the figure, the inner chamber of described device tank body 1 center
Provided with hollow inner tube 3, described device tank body 1 is connected by connecting solid separator 12 on the hollow outer wall of inner tube 3, it is described solid
The inner chamber of described device tank body 1 is divided into the upper chamber mutually completely cut off and lower chambers by dividing plate 12, positioned at described in the bottom chamber
The hollow mouth of pipe side wall of inner tube 3 is provided with baffle plate 31 provided with some exhaust outlets, front, and the exhaust outlet is immersed in described device tank
In the lower chambers liquid of body 1, combustion gas interface 13, the cavity of resorption are provided with close to the solid separator 12 on upper chamber's tank wall
Close to the solid separator 12 provided with emptying tower interface 14 on the tank wall of room, emptying gas are entered by the combustion gas interface 13
The upper chamber, the lower chambers are entered by the hollow inner tube 3, described via being entered after the bottom chamber liquid
Tower interface 14 is vented, the lower end of described device tank body 1 is additionally provided with blow-off line 15, and the blow-off line 15 is provided with transfusion branch pipe
152, lower end is additionally provided with blind plate 151.
The hollow inner tube 3, which is located in the upper chamber, a protuberance, the protuberance top in the horizontal direction with institute
State combustion gas interface 13 and open up and highly maintain an equal level, dorsad the combustion gas interface 13 is provided with flow-guiding mouth, the flow-guiding mouth to the hollow inner tube 3
For a groove for running through the hollow top of inner tube 3, the groove setting direction and the setting direction of combustion gas interface 13 are mutual
Vertically, the side wall of described device tank body 1 is provided with smooth guide rod 11, and the smooth guide rod 11 is carved provided with addition funnel 2 and liquid level
Degree, the addition funnel 2 is provided with overflow pipe 22 provided with capping 21, side wall, and the lower end of addition funnel 2 is by connecting flexible pipe 23
The blow-off line transfusion branch pipe 152 is connected, is connected between the flexible pipe 23 and the transfusion branch pipe 152 by screw thread ball valve 231
Connect, the hollow nose end of inner tube 3 connects the baffle plate 31 by four bar strips 32 of the well-balanced setting of mouth of pipe quadrantal points.
The operation principle of the present invention：According to needed for emptying pressure difference, regulation addition funnel height simultaneously opens screw thread ball valve to dress
Put tank body and carry out fluid injection fluid-tight, then be passed through emptying combustion gas, combustion gas is filtered through fluid-tight by hollow inner tube and arranged again by emptying tower interface
Go out；Capping is covered after fluid injection prevents impurity from entering in tank body, carries out first stopping combustion gas emptying during blowdown, simultaneously closes off screw thread ball valve
And open blind plate.
Advantages of the present invention：1st, combustion gas interface is provided with solid separator with emptying tower interface, and can be by addition funnel
Carrying out fluid injection causes hollow inner tube to be in fluid-tight state, and no matter how the pressure difference of combustion gas incoming end changes when using, can be thorough
Avoid contact of the combustion gas with air, it is to avoid the harm that mixed airflow backflow is caused to the corrosion of equipment and when being tempered；2、
Hollow pipe correspondence fuel gas inlet is provided with tilting flow-guiding mouth, and length correspondence fuel gas inlet, it is to avoid fuel gas flow is in tank body
Baffle plate is set at the importing for directly washing away and facilitating gas in portion, the exhaust of hollow pipe lower end, while avoiding fuel gas flow to tank
The erosion corrosion at body lower end sewage draining exit position, improves the overall service life of tank body, and be easy to the maintaining in device later stage；
The 3rd, smooth guide rod and addition funnel are set, and addition funnel connects blow-off line, liquid feeding conveniently by flexible pipe, and can be by overflowing
Flow tube and the height of control addition funnel control the liquid level of tank interior, are prevented effectively from aqueous and flow into exhausting pipeline.
The above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to recognized
The specific implementation of the fixed present invention is confined to these explanations.For general technical staff of the technical field of the invention,
Without departing from the inventive concept of the premise, some simple deduction or replace can also be made, the present invention should be all considered as belonging to
Protection domain.
Claims (7)
1. a kind of liquid-seal type back-fire relief isolating device, it is characterised in that including device tank body, described device tank inner chamber center is provided with
Described device tank body is connected by connecting solid separator on hollow inner tube, the hollow outer wall of inner tube, the solid separator is by institute
State device tank inner chamber and be divided into the upper chamber mutually completely cut off and lower chambers, positioned at the hollow inner tube mouth of pipe of the bottom chamber
Side wall is provided with baffle plate provided with some exhaust outlets, front, and the exhaust outlet is immersed in described device tank body lower chambers liquid,
It is provided with upper chamber's tank wall close to the solid separator on combustion gas interface, the lower chambers tank wall close to described
Solid separator enters the upper chamber provided with emptying tower interface, emptying gas by the combustion gas interface, by described hollow interior
Pipe enters the lower chambers, via entered after the bottom chamber liquid it is described emptying tower interface, described device tank body
Lower end is additionally provided with blow-off line, and the blow-off line is provided with transfusion branch pipe, and lower end is additionally provided with blind plate.
2. a kind of liquid-seal type back-fire relief isolating device according to claim 1, it is characterised in that the hollow inner tube is located at institute
Stating has protuberance in upper chamber, the protuberance top opens up height with the combustion gas interface and maintained an equal level in the horizontal direction, described
Dorsad the combustion gas interface is provided with flow-guiding mouth to hollow inner tube.
3. a kind of liquid-seal type back-fire relief isolating device according to claim 2, it is characterised in that the flow-guiding mouth is inclined to be set
Put, inclined side is 45 ° -60 ° with the hollow inner pipe wall angulation.
4. a kind of liquid-seal type back-fire relief isolating device according to claim 2, it is characterised in that the flow-guiding mouth runs through for one
The groove on the hollow inner tube top, the groove setting direction is mutually perpendicular to the combustion gas interface setting direction.
5. a kind of liquid-seal type back-fire relief isolating device according to claim 1, it is characterised in that on described device tank wall
Provided with smooth guide rod, the smooth guide rod is provided with addition funnel and fluid level scale, and the addition funnel is provided with capping, side wall
Provided with overflow pipe, the addition funnel lower end connects the blow-off line transfusion branch pipe, the flexible pipe and institute by connecting flexible pipe
State transfusion branch pipe between be connected by screw thread ball valve.
6. a kind of liquid-seal type back-fire relief isolating device according to claim 1, it is characterised in that the baffle plate is described hollow
A part for inner tube, the exhaust outlet is symmetrically opened on the hollow inner pipe wall.
7. a kind of liquid-seal type back-fire relief isolating device according to claim 1, it is characterised in that the hollow inner tube nose end
The baffle plate is connected by four bar strips of the well-balanced setting of mouth of pipe quadrantal points.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710326925.9A CN106979361A (en) | 2017-05-10 | 2017-05-10 | A kind of liquid-seal type back-fire relief isolating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710326925.9A CN106979361A (en) | 2017-05-10 | 2017-05-10 | A kind of liquid-seal type back-fire relief isolating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106979361A true CN106979361A (en) | 2017-07-25 |
Family
ID=59342055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710326925.9A Pending CN106979361A (en) | 2017-05-10 | 2017-05-10 | A kind of liquid-seal type back-fire relief isolating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106979361A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4245617A (en) * | 1979-01-26 | 1981-01-20 | Chevron Research Company | Valve |
| CN2184472Y (en) * | 1993-12-23 | 1994-12-07 | 于龙洪 | High efficient water seal duster |
| CN101888890A (en) * | 2007-12-04 | 2010-11-17 | 德尔克控股有限公司 | Improvement in or relating to thickeners having self-diluting feedwell |
| CN202440025U (en) * | 2012-01-21 | 2012-09-19 | 浙江卫星石化股份有限公司 | Storage tank with hydraulic seal breather valve |
| CN203670935U (en) * | 2014-01-06 | 2014-06-25 | 山东黑尚莓生物技术发展股份有限公司 | Breather valve of fermentation wine tank |
| CN203829806U (en) * | 2014-05-21 | 2014-09-17 | 天津越昊燃气有限公司 | Gas filter |
| CN204485595U (en) * | 2014-12-31 | 2015-07-22 | 河南联鑫化工有限公司 | Sour water tank exhaust treatment system |
| CN104973358A (en) * | 2015-06-29 | 2015-10-14 | 江苏永钢集团有限公司 | Chemical tank pressure balance device |
| CN206816879U (en) * | 2017-05-10 | 2017-12-29 | 佛山市燃气集团股份有限公司 | A kind of liquid-seal type back-fire relief isolating device |
-
2017
- 2017-05-10 CN CN201710326925.9A patent/CN106979361A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4245617A (en) * | 1979-01-26 | 1981-01-20 | Chevron Research Company | Valve |
| CN2184472Y (en) * | 1993-12-23 | 1994-12-07 | 于龙洪 | High efficient water seal duster |
| CN101888890A (en) * | 2007-12-04 | 2010-11-17 | 德尔克控股有限公司 | Improvement in or relating to thickeners having self-diluting feedwell |
| CN202440025U (en) * | 2012-01-21 | 2012-09-19 | 浙江卫星石化股份有限公司 | Storage tank with hydraulic seal breather valve |
| CN203670935U (en) * | 2014-01-06 | 2014-06-25 | 山东黑尚莓生物技术发展股份有限公司 | Breather valve of fermentation wine tank |
| CN203829806U (en) * | 2014-05-21 | 2014-09-17 | 天津越昊燃气有限公司 | Gas filter |
| CN204485595U (en) * | 2014-12-31 | 2015-07-22 | 河南联鑫化工有限公司 | Sour water tank exhaust treatment system |
| CN104973358A (en) * | 2015-06-29 | 2015-10-14 | 江苏永钢集团有限公司 | Chemical tank pressure balance device |
| CN206816879U (en) * | 2017-05-10 | 2017-12-29 | 佛山市燃气集团股份有限公司 | A kind of liquid-seal type back-fire relief isolating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 528000 Jihua five road, Chancheng District, Foshan, Guangdong Province, No. 25 Applicant after: Fo ran Energy Group Co.,Ltd. Address before: 528000 Jihua five road, Chancheng District, Foshan, Guangdong Province, No. 25 Applicant before: FOSHAN GAS GROUP CO.,LTD. |
|
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170725 |