CN203929459U - Calorific value of gas sampling system - Google Patents
Calorific value of gas sampling system Download PDFInfo
- Publication number
- CN203929459U CN203929459U CN201420311961.XU CN201420311961U CN203929459U CN 203929459 U CN203929459 U CN 203929459U CN 201420311961 U CN201420311961 U CN 201420311961U CN 203929459 U CN203929459 U CN 203929459U
- Authority
- CN
- China
- Prior art keywords
- tank body
- gas
- sampling
- calorific value
- secondary filter
- 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.)
- Expired - Fee Related
Links
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model is about a kind of calorific value of gas sampling system, comprising: gas sampling device, condenser, filtration unit; Described gas sampling device comprises: the first sampling tank body and the second sampling tank body, the first secondary filter and the second secondary filter, the first aspiration pump and the second aspiration pump, and sample line transfer valve; Wherein, described the first sampling tank body or the second sampling tank body comprise: the import of sample gas, the outlet of sample gas, tracing steam import, tracing steam outlet, sewage draining exit, tank body pressure survey mouth, filtration members outward mouthpiece, filtration members, the hot endless tube of companion, blow coil pipe outward.The utility model calorific value of gas sampling system has been strengthened sample gas dehydrating effect, improves the replacing velocity of gas sampled, and in sample gas, the infiltration of naphthalene and tar and crystallization are effectively suppressed.
Description
Technical field
The utility model relates to industrial gas analysis technical field, particularly relates to calorific value of gas sampling system.
Background technology
Current calorific value of gas sampling system forms and installs schematic diagram as shown in Figure 1, comprise: gas sampling device, condenser, secondary filter, gas sampled is carried out single filter through gas sampling device, enter afterwards condensing unit and carry out condensation process, then enter secondary filter and carry out cascade filtration.Above-mentioned calorific value of gas sampling system is mainly filtered gas sampled, filtering accuracy 5-15 micron.
Inventor finds in realizing process of the present invention, and above-mentioned calorific value of gas sampling system at least exists following defect:
1, gas sampled is difficult for draining in flow process, is easily with water to enter follow up device, easily causes condenser to freeze sample feed channel is stopped up, and easily pollutes afterbody paper filter when band water is serious, and filtration efficiency is declined;
2, by process pipe pressure, drive gas sampled to flow, the filtration members in device is reducing to lose filtering accuracy under the prerequisite of vapour lock, during the sampling spot on process pipe and caloric value instrument distant, and the measurement result increase that lags behind;
3, the naphthalene in gas sampled, tar permeate in time, easily cause measurement pipeline small in device and equipment pollution fouling and crystallization, when serious, stop up.
4, gas sampled temperature is in the time of 4-6 ℃, the easy crystallization of naphthalene in coal gas, the damage of filtration members in accelerator.
Therefore, current calorific value of gas sampling system awaits further improvement.
Utility model content
The purpose of this utility model is, a kind of calorific value of gas sampling system is provided, technical matters to be solved comprises: calorific value of gas sampling system cannot blowdown and by process pipe pressure, driven gas sampled to flow to cause measurement result to lag behind and increase, cannot automatically cleaning cause reduce equipment life, without heating link, cause in gas sampled the problems such as damage of filtration members in naphthalene crystal accelerator simultaneously.
The purpose of this utility model and solve its technical matters and can adopt following technical scheme to realize.
According to a kind of calorific value of gas sampling system that the utility model proposes, comprising: gas sampling device, the condenser being connected with gas sampling device, the filtration unit being connected with condenser;
Described gas sampling device comprises: the first sampling tank body and the second sampling tank body, the first secondary filter and the second secondary filter, the first aspiration pump and the second aspiration pump, and sample line transfer valve; Described the first sampling tank body is sequentially connected with described sample line transfer valve with the first aspiration pump by the first secondary filter; Described the second sampling tank body is sequentially connected with described sample line transfer valve with the second aspiration pump by the second secondary filter, described sample line transfer valve is connected with condenser, described sample line transfer valve is used for switching described the first sampling tank body and described the second one of tank body of sampling is in running order, and another is in automatically cleaning state;
Wherein, described the first sampling tank body or the second sampling tank body comprise upper and lower two parts, upper and lower two parts adopt flange to connect, described the first sampling tank body or the second sampling tank body comprise: be positioned at the sample gas import that flange connects following partial sidewall, be positioned at the sample gas outlet that flange connects above partial sidewall, be positioned at the import of described sample gas with the tracing steam import of lower wall, be positioned at described tracing steam import with the tracing steam outlet of lower wall, be positioned at the sewage draining exit of tank base, be positioned at the tank body pressure survey mouth at tank body top, be positioned at the filtration members of tank interior, the outer mouthpiece of filtration members that is positioned at tank wall and communicates with filtration members, be positioned at tank interior near the hot endless tube of companion of described tracing steam import and tracing steam outlet, be positioned at the outer coil pipe that blows of described filtration members top.
Preferably, aforesaid calorific value of gas sampling system, wherein said the first sampling tank body and the second sampling tank body are vertical stainless steel structure.
Preferably, aforesaid calorific value of gas sampling system, the hot endless tube of wherein said companion and to blow coil pipe be outward copper pipe.
Preferably, aforesaid calorific value of gas sampling system, wherein said sample gas outlet is simultaneously as interior blow valve port.
Preferably, aforesaid calorific value of gas sampling system, the filter core of wherein said the first secondary filter and the second secondary filter adopts multi-layer metal structure.
Preferably, aforesaid calorific value of gas sampling system, the outer mouthpiece of the import of wherein said sample gas, the outlet of sample gas, tracing steam import, tracing steam outlet, sewage draining exit, tank body pressure survey mouth and filtration members is all provided with for controlling the operation valve of open and close.
Preferably, aforesaid calorific value of gas sampling system, wherein said the first sampling tank body is connected with described the first secondary filter by described sample gas outlet, and described the second sampling tank body is connected with described the second secondary filter by described sample gas outlet.
Preferably, aforesaid calorific value of gas sampling system, wherein said condenser below is provided with sewage draining exit.
Preferably, aforesaid calorific value of gas sampling system, wherein said system also comprises: have marked gas entrance, be arranged at the demarcation transfer valve between condenser and filtration unit.
Preferably, aforesaid calorific value of gas sampling system, wherein said filtration unit is precision filter, to carrying out three-stage filtration from condenser sample gas out.
By technique scheme, calorific value of gas sampling system of the present utility model at least has following advantages and beneficial effect:
1, sampling tank body arranges sewage draining exit, has strengthened sample gas dehydrating effect, effectively suppresses to be with water to enter follow up device in sample gas flow process;
2, adopt the acting in conjunction of aspiration pump and pipeline pressure, improve the replacing velocity of gas sampled, overcome the influence degree of filtration members vapour lock, can suitably improve the filtration members precision of device, reduce measurement result and lag behind;
3, sampling tank body arranges the outer mouthpiece of filtration members, thereby increased, system blowback is swept, anti-washing function, has extended the serviceable life of system, and in sample gas, the infiltration of naphthalene and tar is effectively suppressed;
4, in sampling tank body, companion's hot coil is set, has increased the heating function of device, effectively avoided naphthalene crystal phenomenon in sample gas, pipeline scale and obstruction obviously improve.
In sum, the utility model has significant progress technically, and has significantly positive technique effect, is really a new and innovative, progressive, practical new design.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be implemented according to the content of instructions, and for above and other object of the present utility model, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and coordinate Figure of description, be described in detail as follows.
Accompanying drawing explanation
Fig. 1 is existing calorific value of gas sampling system configuration diagram;
Fig. 2 is calorific value of gas sampling system configuration diagram of the present utility model;
Fig. 3 is the utility model sampling jar body structure schematic diagram.
Embodiment
For further setting forth the utility model, technological means and the effect for reaching predetermined utility model object, taked, below in conjunction with accompanying drawing and preferred embodiment, its embodiment of calorific value of gas sampling system, structure and feature to according to the utility model proposes, be described in detail as follows.
The present embodiment provides a kind of calorific value of gas sampling system, referring to Fig. 2, for described calorific value of gas sampling system configuration diagram, described calorific value of gas sampling system comprises: gas sampling device 10, the condenser 11 being connected with gas sampling device 10, the filtration unit 12 being connected with condenser 11.Wherein, condenser 11 bottoms are provided with automatic pollution discharge mouth described in the present embodiment, for discharging moisture that sample gas condensation process produces etc.Described in the present embodiment, filtration unit 12 is precision filter, for the condensed sample gas of process condenser 11 is carried out to three-stage filtration.
Described in the present embodiment, calorific value of gas sampling system also can comprise demarcation transfer valve 13, described demarcation transfer valve 13 is arranged between condenser 11 and filtration unit 12, there is marked gas entrance, described demarcation transfer valve 13 is for analysis of shift state or demarcation state, described analysis state carries out quantitative test to gas composition, described demarcation state is proofreaded multicomponent analysis instrument, described in the present embodiment, calorific value of gas sampling system can be connected with multicomponent analysis instrument, realizes calorific value of gas sample analysis.
Wherein, described gas sampling device 10 comprises: the first sampling tank body 101A and the second sampling tank body 101B, the first secondary filter 102A and the second secondary filter 102B, the first aspiration pump 103A and the second aspiration pump 103B, and sample line transfer valve 104; Described the first sampling tank body 101A is sequentially connected with described sample line transfer valve 104 by the first secondary filter 102A and the first aspiration pump 103A; Described the second sampling tank body 101B is sequentially connected with described sample line transfer valve 104 by the second secondary filter 102B and the second aspiration pump 103B, and described sample line transfer valve 104 is connected with condenser 11.Described sample line transfer valve 104 is for switching described the first sampling tank body 101A and described the second mono-of sampling tank body 101B is in running order, another is in automatically cleaning state, the first sampling tank body 101A and the second sampling tank body 101B are active and standby each other, namely, when the first sampling tank body 101A is when in running order, the second sampling tank body 101B is in automatically cleaning state, by the automatic switchover of described sample line transfer valve 104, realizes the alternation of two sampling tank bodies.
Wherein, the filter core of the first secondary filter 102A and the second secondary filter 102B adopts multi-layer metal structure, reception is the sample gas after single filter from the first sampling tank body 101A or the second sampling tank body 101B, carry out cascade filtration, can by filtering in single filter process, sample gas completely dewater again, dedusting.
Described in the present embodiment, the structure of the first sampling tank body 101A and the second sampling tank body 102B can be identical, its a kind of example structure as shown in Figure 3, sampling tank body (comprising the first sampling tank body and the second sampling tank body) comprises upper and lower two parts, upper and lower two parts adopt flange to connect, described sampling tank body comprises: be positioned at the sample gas import that flange connects following partial sidewall, be positioned at the sample gas outlet that flange connects above partial sidewall, be positioned at the import of described sample gas with the tracing steam import of lower wall, be positioned at described tracing steam import with the tracing steam outlet of lower wall, be positioned at the sewage draining exit of tank base, be positioned at the tank body pressure survey mouth at tank body top, be positioned at the filtration members of tank interior, the outer mouthpiece of filtration members that is positioned at tank wall and communicates with filtration members, be positioned at tank interior near the hot endless tube of companion of described tracing steam import and tracing steam outlet, be positioned at the outer coil pipe that blows of described filtration members top, described the first sampling tank body is connected with described the first secondary filter by described sample gas outlet, and described the second sampling tank body is connected with described the second secondary filter by described sample gas outlet.
Described sample gas outlet is also interior blow valve port simultaneously.Described tank body pressure survey mouth is positioned at tank body top, is convenient to maintainer and observes the variation of sampling tank body internal pressure.The outer mouthpiece of the import of sample gas, tracing steam import, tracing steam outlet, sewage draining exit and filtration members is all positioned at sampling tank flange and connects following part.Wherein, described sewage draining exit is positioned at tank base, is convenient to blowdown.The hot endless tube of described companion is used for guaranteeing to sample in tank body temperature between 30 ℃-50 ℃, avoids dirt in gas sampled, sulfide, naphthalene etc. to occur crystallization.Outside described, blow coil pipe, be uniformly distributed and purge filtration members outside surface.The hot endless tube of described companion and blow coil pipe outward and can adopt copper pipe, for example, adopt 10 millimeters of copper pipes of Φ.Each import and export that a kind of embodiment samples tank body (comprising the first sampling tank body and the second sampling tank body) all adopt DN15 pipeline to be connected, and comprising: the import of sample gas, the outlet of sample gas, tracing steam import, tracing steam outlet, sewage draining exit, tank body pressure survey mouth, the outer mouthpiece of filtration members.
The present embodiment is all provided with operation valve, the open and close of importing and exporting for controlling each in each import and export of sampling tank body (comprising the first sampling tank body and the second sampling tank body).For example, in described sample gas import, sampling jar entrance sample valve is installed, is controlled the open and close of sample gas import; At described sewage draining exit, sampling jar bleed valve is installed, is controlled the open and close of described sewage draining exit; Outside described filtration members, mouthpiece is installed blow down valve outside filtration members, controls open and close of the outer mouthpiece of described filtration members etc.
Described sampling tank body is vertical stainless steel structure, and a kind of embodiment physical dimension can be Φ 100*620 millimeter, and namely diameter is 100 millimeters, and height is 620 millimeters.Described filtration members is for the single filter of sample gas, and this filtration members is de-naphthalene, detar, dehydration special filtering part, and filtration members size can be Φ 60*300 millimeter, and namely diameter is 60 millimeters, and height is 300 millimeters, and filtering accuracy is in 3-25 micrometer range.Calorific value of gas sampling system of the present utility model can be used for calorific value of gas sample analysis process, but is not limited to this.
Below in conjunction with Fig. 2 and Fig. 3, described calorific value of gas sampling system is described in detail to the processing procedure of gas sampled, so that further understand the processing procedure of gas sampling device to gas sampled.With the first sampling jar body running, the second sampling tank body automatically cleaning is example.
When sample analysis starts, sample gas enters the first sampling tank body by the import of sample gas and carries out single filter under the malleation of process pipe and the draft effect of aspiration pump, filtration members in this first sampling tank body adopts special coalescence material, by interceptions such as the water in gas sampled, tar, naphthalenes, be adsorbed on coalescence material, prevent the infiltration of objectionable impurities.The residues such as the water after filtration and impurity until described the first sampling tank body by the sewage draining exit at the bottom of tank, emit while entering automatically cleaning state; After the sample gas of sample gas after single filter by the first sampling tank body exports out, enter secondary filter and carry out cascade filtration, secondary filter filter core adopts multi-layer metal structure, can by filtering in single filter process, sample gas does not completely dewater again, dedusting; Sample gas after cascade filtration by the further condensation of condenser, gets off the condensate moisture in sample gas to discharge by the automatic pollution discharge mouth of condenser again, and it is comparatively dry and clean that sample gas now has become.Demarcate transfer valve as switched to analysis state, marked gas pipeline is cut off, sample gas carries out three-stage filtration by filtration unit 12, and this filtration unit 12 is precision filter, finally obtains qualified sample gas.When sample gas enters the first sampling tank body, tracing steam enters this first sampling tank body by tracing steam import, and export discharge by tracing steam, this tracing steam is used for heating in tank body, guarantee temperature in tank body, to avoid dirt in gas sampled, sulfide, naphthalene etc. to occur crystallization.
In the first sampling jar body running process, the second sampling tank body is in automatically cleaning state, purge each segmented pipeline, sampling tank body and filtration members, for example, first by sewage draining exit Auto-drainage, by the outer mouthpiece of filtration members, be blown into nitrogen and wash steam afterwards and purge the filtration members in the second sampling tank body, filtration members is first blown from inside to outside, annular in the second sampling tank body is blown coil pipe outward afterwards, purge uniformly filtration members outside surface, purge afterwards each segmented pipeline and each import and export of the second sampling tank body.
Calorific value of gas sampling system described in the utility model can be applicable to blast furnace gas calorific value analysis, the analysis of coke-oven gas calorific value, mixed gas calorific value analytic system etc.
In sum, calorific value of gas sampling system described in the utility model at least tool have the following advantages:
1, sampling tank body and condenser arrange sewage draining exit, have strengthened sample gas dehydrating effect, effectively suppress to be with water to enter multicomponent analysis instrument in sample gas flow process;
2, adopt the acting in conjunction of aspiration pump and pipeline pressure, improve the replacing velocity of gas sampled, overcome the influence degree of filtration members vapour lock, can suitably improve the filtration members precision of device, reduce measurement result and lag behind;
3, sampling tank body arranges the outer mouthpiece of filtration members, thereby increased, system blowback is swept, anti-washing function, has extended the serviceable life of system, and in sample gas, the infiltration of naphthalene and tar is effectively suppressed;
4, sampling arranges companion's hot coil in tank body, has increased the heating function of device, guarantees that the temperature of gas sampled, between 30-50 ℃, effectively avoided naphthalene crystal phenomenon in sample gas, pipeline scale and stop up obviously and improve;
5, the sampling tank body that two covers are identical is set active and standby each other, alleviated the operating load of online equipment, reduced the failure rate of system, be convenient to maintenance and the maintenance of system and device.
The above is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet not in order to limit technology of the present utility model, any those skilled in the art are not departing within the scope of technical solutions of the utility model, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solutions of the utility model, any simple modification of above embodiment being done according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (10)
1. a calorific value of gas sampling system, is characterized in that, comprising: gas sampling device, the condenser being connected with gas sampling device, the filtration unit being connected with condenser;
Described gas sampling device comprises: the first sampling tank body and the second sampling tank body, the first secondary filter and the second secondary filter, the first aspiration pump and the second aspiration pump, and sample line transfer valve; Described the first sampling tank body is sequentially connected with described sample line transfer valve with the first aspiration pump by the first secondary filter; Described the second sampling tank body is sequentially connected with described sample line transfer valve with the second aspiration pump by the second secondary filter, described sample line transfer valve is connected with condenser, described sample line transfer valve is used for switching described the first sampling tank body and described the second one of tank body of sampling is in running order, and another is in automatically cleaning state;
Wherein, described the first sampling tank body or the second sampling tank body comprise upper and lower two parts, upper and lower two parts adopt flange to connect, described the first sampling tank body or the second sampling tank body comprise: be positioned at the sample gas import that flange connects following partial sidewall, be positioned at the sample gas outlet that flange connects above partial sidewall, be positioned at the import of described sample gas with the tracing steam import of lower wall, be positioned at described tracing steam import with the tracing steam outlet of lower wall, be positioned at the sewage draining exit of tank base, be positioned at the tank body pressure survey mouth at tank body top, be positioned at the filtration members of tank interior, the outer mouthpiece of filtration members that is positioned at tank wall and communicates with filtration members, be positioned at tank interior near the hot endless tube of companion of described tracing steam import and tracing steam outlet, be positioned at the outer coil pipe that blows of described filtration members top.
2. calorific value of gas sampling system as claimed in claim 1, is characterized in that, described the first sampling tank body and the second sampling tank body are vertical stainless steel structure.
3. calorific value of gas sampling system as claimed in claim 1, is characterized in that, the hot endless tube of described companion and to blow coil pipe be outward copper pipe.
4. calorific value of gas sampling system as claimed in claim 1, is characterized in that, described sample gas outlet is simultaneously as interior blow valve port.
5. calorific value of gas sampling system as claimed in claim 1, is characterized in that, the filter core of described the first secondary filter and the second secondary filter adopts multi-layer metal structure.
6. calorific value of gas sampling system as claimed in claim 5, it is characterized in that, the outer mouthpiece of the import of described sample gas, the outlet of sample gas, tracing steam import, tracing steam outlet, sewage draining exit, tank body pressure survey mouth and filtration members is all provided with for controlling the operation valve of open and close.
7. calorific value of gas sampling system as claimed in claim 1, it is characterized in that, described the first sampling tank body is connected with described the first secondary filter by described sample gas outlet, and described the second sampling tank body is connected with described the second secondary filter by described sample gas outlet.
8. calorific value of gas sampling system as claimed in claim 1, is characterized in that, described condenser below is provided with sewage draining exit.
9. calorific value of gas sampling system as claimed in claim 1, is characterized in that, described system also comprises: have marked gas entrance, be arranged at the demarcation transfer valve between condenser and filtration unit.
10. calorific value of gas sampling system as claimed in claim 1, is characterized in that, described filtration unit is precision filter, to carrying out three-stage filtration from condenser sample gas out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420311961.XU CN203929459U (en) | 2014-06-12 | 2014-06-12 | Calorific value of gas sampling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420311961.XU CN203929459U (en) | 2014-06-12 | 2014-06-12 | Calorific value of gas sampling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203929459U true CN203929459U (en) | 2014-11-05 |
Family
ID=51825259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420311961.XU Expired - Fee Related CN203929459U (en) | 2014-06-12 | 2014-06-12 | Calorific value of gas sampling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203929459U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677796A (en) * | 2015-03-18 | 2015-06-03 | 深圳睿境环保科技有限公司 | Ultra-low concentration particulate matter online monitoring instrument and monitoring method |
| CN106483003A (en) * | 2016-11-02 | 2017-03-08 | 重庆钢铁集团电子有限责任公司 | Coal gas pretreatment system for comprehensive gas analysis and its control method |
-
2014
- 2014-06-12 CN CN201420311961.XU patent/CN203929459U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677796A (en) * | 2015-03-18 | 2015-06-03 | 深圳睿境环保科技有限公司 | Ultra-low concentration particulate matter online monitoring instrument and monitoring method |
| CN106483003A (en) * | 2016-11-02 | 2017-03-08 | 重庆钢铁集团电子有限责任公司 | Coal gas pretreatment system for comprehensive gas analysis and its control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206366234U (en) | A kind of slurry is automatically counter to clean filtering recovering system | |
| CN201083651Y (en) | Coke oven gas oxygen content analytical equipment | |
| CN202033216U (en) | Airtight sampling device for liquid sampling under normal temperature | |
| CN100557408C (en) | Fume emission on-line continuous detecting system sampling apparatus | |
| CN203929459U (en) | Calorific value of gas sampling system | |
| CN203965192U (en) | A kind of enclosed sampling apparatus | |
| CN102494927B (en) | Sample gas processing detection system and method for on-line analysis meter | |
| MXPA06011665A (en) | Probe and system for extracting gases from a process environment. | |
| CN204261502U (en) | A kind of blast furnace and coal gas of converter analyzer sample gas filter | |
| CN207379752U (en) | A kind of environment-friendly type sampler | |
| CN204170488U (en) | Be applied to scraping disc filter and the cleaning system of high temperature coal-tar cleaning system | |
| CN203155019U (en) | Exhaust gas purifier | |
| CN207056068U (en) | A kind of methanol filtration system | |
| CN217855005U (en) | Tar ammonia water piece-rate system | |
| CN105112109A (en) | Raw gas separation system | |
| CN205627248U (en) | Rosin filter equipment | |
| CN207237610U (en) | A kind of gas filter drain cock | |
| CN105056695B (en) | Furfural vapour slag separating and reclaiming device and its recovery method | |
| CN209027874U (en) | A kind of pretreatment sampler of fermentation tail gas on-line checking | |
| CN204727847U (en) | A kind of dreg removing system of waste tire oil refining | |
| CN202223941U (en) | Whirl decoking device | |
| CN105158029A (en) | On-line coke oven gas preprocessing system | |
| CN111500323A (en) | Gas-liquid separation spiral filter | |
| CN201253510Y (en) | Multi-blade vertical type filter | |
| CN105363295A (en) | Continuous casting secondary cooling zone high-pressure air impurity filtering system and using method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170726 Address after: 430080 Qingshan District stock company of Hubei, Wuhan Province Patentee after: Wuhan iron and Steel Company Limited Address before: 430080 Friendship Avenue, Hubei, Wuhan, No. 999 Patentee before: Wuhan Iron & Steel (Group) Corp. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20200612 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |