CN203530350U - Blast furnace gas pipeline leakage protective device - Google Patents
Blast furnace gas pipeline leakage protective device Download PDFInfo
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- CN203530350U CN203530350U CN201320604112.9U CN201320604112U CN203530350U CN 203530350 U CN203530350 U CN 203530350U CN 201320604112 U CN201320604112 U CN 201320604112U CN 203530350 U CN203530350 U CN 203530350U
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- venting
- valve
- blast furnace
- furnace gas
- pipeline
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Abstract
The utility model discloses a blast furnace gas pipeline leakage protective device, which is characterized in that an explosion venting valve is connected in parallel to the two ends of a regulating valve; the explosion venting valve is used for transmitting one part of gas to a diffusion tower for emission when the gas pressure in the blast furnace gas main pipe network is abnormal; the outlet of the regulating valve and the outlet of the explosion venting valve are merged and then communicated with the inlet of a burner of the diffusion tower. According to the utility model, the traditional gas diffusion tower is modified. As the explosion venting valve is mounted in parallel with the regulating valve of the diffusion tower, and when the gas system is abnormal (including the regulation system failure of the diffusion tower, personal misoperation and other abnormal conditions of the blast furnace gas system) and the pressure of the pipe network rises suddenly beyond the rated range, the explosion venting valve is capable of emitting the gas in the pipe network through the gas diffusion tower and preventing safety accidents such as gas system overpressure and gas leakage; therefore, the safety protection effect on the gas system is achieved.
Description
Technical field
The utility model belongs to security device field, is specifically related to a kind of blast furnace gas pipeline venting of dust explosion protective device.
Background technology
At present, iron and steel enterprise generally diffuses coal gas more than needed by the burning of coal gas diffusion tower, ductwork pressure is regulated simultaneously, the most variable valve that adopt of setting device, by automatic or manual mode controlling opening of valve, control coal gas diffusion amount coal gas system is in service, thereby reach the effect of stablizing coal gas system pressure, but also have some problems simultaneously, reliability is not high, has certain potential safety hazard.
Utility model content
The purpose of this utility model is to address the above problem, a kind of blast furnace gas pipeline venting of dust explosion protective device is provided, this device organically combines venting of dust explosion film and coal gas diffusion tower, can solve coal gas diffusion tower is in operation and breaks down or occur that the abnormal conditions such as personnel's mishandle cause the problem of coal gas system superpressure generation gas safety accident, the security that has improved coal gas system because of regulation system.
In order to achieve the above object, the technical scheme that the utility model adopts is: comprise blast furnace gas main pipeline and diffusing tower burner, diffusing tower burner is connected with blast furnace gas main pipeline by bleeder, by blast furnace gas main pipeline, to the bleeder of diffusing tower burner inlet, is disposed with butterfly valve, blank-plate valve and variable valve; The two ends of variable valve are parallel with explosion venting valve, and explosion venting valve occurs that for the gas pressure in blast furnace gas supervisor net a part of coal gas being delivered to diffusing tower from explosion venting valve when abnormal emits; After converging, the outlet of variable valve and the outlet of explosion venting valve be connected with the entrance of diffusing tower burner.
In described explosion venting valve, be provided with the venting of dust explosion film of aluminum; The venting of dust explosion film that the nominal pressure of venting of dust explosion film is close with coal gas system safety control pressure.
The demarcation burstpressures of described venting of dust explosion film is less than safety control pressure.
The latus rectum of described explosion venting valve is less than bleeder latus rectum.
Described diffusing tower burner is connected with blast furnace gas main pipeline by the identical bleeder of three line structures, on each road bleeder, be provided with butterfly valve, blank-plate valve and variable valve, the two ends that the variable valve on pipeline is diffused on three tunnels are parallel with respectively the explosion venting valve that venting pressure step type increases progressively.
The nominal pressure of described three explosion venting valves differs 5kPa.
Described butterfly valve is electric butterfly valve, and blank-plate valve is electronic blank-plate valve.
On pipeline before described butterfly valve entrance and on the pipeline of blank-plate valve both sides, be all connected with standby bleeder.
On the pipeline of described blank-plate valve both sides and variable valve ingress, be provided with manhole.
On pipeline between described blank-plate valve and variable valve, be also provided with loop expansion pipe.
Compared with prior art, the utlity model has following beneficial effect:
The utility model, for preventing coal gas diffusion tower regulation system and break down or personnel's misoperation causing the security incidents such as coal gas system generation superpressure, is transformed coal gas diffusion tower traditionally.By an explosion venting valve of the parallel installation of the variable valve with diffusing tower.When abnormal (comprising that other abnormal conditions appear in diffusing tower regulation system fault, personnel's misoperation and blast furnace gas system) ductwork pressure appears in coal gas system, sharply rise after over range; explosion venting valve emits coal gas in pipe network through coal gas diffusion tower; prevent the generation of the security incidents such as coal gas system superpressure, gas leak, to reach the safeguard protection effect to coal gas system.
Further, be provided with the venting of dust explosion film of aluminum in the utility model explosion venting valve, when coal gas system occurs that ductwork pressure sharply rises after over range extremely, the explosion of venting of dust explosion film emits coal gas in pipe network through coal gas diffusion tower.
Further, the utility model adopts 3 bleeders, and 3 bleeders are used the different explosion venting valve of nominal pressure, nominal pressure is by step type setting, when pressure surpasses safety control pressure, carry out one by one venting of dust explosion, prevent that venting of dust explosion of identical 3 explosion venting valves while of venting pressure from causing pipe network decompression.
Further, the utility model, when venting of dust explosion film is changed, cuts off after the valve group of single bleeder venting of dust explosion film front end, can be easily to venting of dust explosion film being changed after blowing pipeline.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present utility model.
Wherein, 1 is explosion venting valve; 2 is variable valve; 3 is blank-plate valve; 4 is butterfly valve; 5 is standby bleeder; 6 is diffusing tower burner; 7 is manhole; 8 is loop expansion pipe.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Referring to Fig. 1, the utility model comprises blast furnace gas main pipeline and diffusing tower burner 6, diffusing tower burner 6 is connected with blast furnace gas main pipeline by bleeder, by blast furnace gas main pipeline, to the bleeder of diffusing tower burner 6 entrances, be disposed with butterfly valve 4, blank-plate valve 3 and variable valve 2, butterfly valve 4 is electric butterfly valve, blank-plate valve 3 is electronic blank-plate valve, on pipeline before butterfly valve 4 entrances and on the pipeline of blank-plate valve 3 both sides, be all connected with standby bleeder 5, on the pipeline of blank-plate valve 3 both sides and variable valve 2 ingress, be provided with manhole 7, on pipeline between blank-plate valve 3 and variable valve 2, be also provided with loop expansion pipe 8, the two ends of variable valve 2 are parallel with explosion venting valve 1, and explosion venting valve 1 occurs that for the gas pressure in blast furnace gas supervisor net a part of coal gas being delivered to diffusing tower from explosion venting valve 1 when abnormal emits, and the latus rectum of explosion venting valve 1 is less than bleeder latus rectum, in explosion venting valve 1, be provided with the venting of dust explosion film of aluminum, the venting of dust explosion film that the nominal pressure of venting of dust explosion film is close with coal gas system safety control pressure, the demarcation burstpressures of venting of dust explosion film is less than safety control pressure.After converging, the outlet of the outlet of variable valve 2 and explosion venting valve 1 is connected with the entrance of diffusing tower burner 6.
Diffusing tower burner 6 of the present utility model is connected with blast furnace gas main pipeline by the identical bleeder of three line structures, on each road bleeder, be provided with butterfly valve 4, blank-plate valve 3 and variable valve 2, the nominal pressure that the two ends that the variable valve 2 on pipeline is diffused on three tunnels are parallel with respectively 1, three explosion venting valve of explosion venting valve that venting pressure step type increases progressively differs 5kPa.
The utility model is when selecting explosion venting valve, according to coal gas system operating safety control pressure, select suitable venting of dust explosion film, venting of dust explosion film is demarcated burstpressures and is slightly less than safety control pressure, the coal gas diffusion tower venting pressure of 3 bleeders is chosen by step type, and each explosion venting valve is demarcated venting pressure and differed 5kPa; The latus rectum of explosion venting valve should should suitably be less than bleeder latus rectum according to the selection for nominal diameter of bleeder, prevents that quantity discharged is too large on ductwork pressure impact too greatly; Separately exist, when transforming, butterfly valve, blank-plate valve before variable valve are closed, pipeline section is thereafter purged to qualified; Finally, purge qualified rear explosion venting valve is installed.
Working process of the present utility model:
When abnormal (comprising that other abnormal conditions appear in diffusing tower regulation system fault, personnel's misoperation and blast furnace gas system) ductwork pressure appears in coal gas system, sharply rise after over range; in bleeder, the pressure of coal gas is greater than the nominal pressure of explosion venting valve; venting of dust explosion film bag explosion in explosion venting valve; make explosion venting valve conducting; thereby make explosion venting valve and variable valve simultaneously to bleeder pressure release; by coal gas diffusion to diffusing tower burner; prevent the generation of the security incidents such as coal gas system superpressure, gas leak, to reach the safeguard protection effect to coal gas system.
The utility model also has the following advantages:
(1) can play a protective role to the safe operation of coal gas system, prevent the generation of the security incidents such as coal gas system superpressure, gas leak;
(2) when coal gas system superpressure, can utilize the bleeder of existing diffusing tower that coal gas is fallen by high altitude discharge, can guarantee personal security around;
(3) utilize after this technology the normal operation of existing diffusing tower without any other impact;
(4) when venting of dust explosion film is changed, cut off after the valve group of single bleeder venting of dust explosion film front end, can be easily to venting of dust explosion film being changed after blowing pipeline.
Claims (10)
1. a blast furnace gas pipeline venting of dust explosion protective device, it is characterized in that: comprise blast furnace gas main pipeline and diffusing tower burner (6), diffusing tower burner (6) is connected with blast furnace gas main pipeline by bleeder, by blast furnace gas main pipeline, to the bleeder of diffusing tower burner (6) entrance, is disposed with butterfly valve (4), blank-plate valve (3) and variable valve (2); The two ends of variable valve (2) are parallel with explosion venting valve (1), and explosion venting valve (1) occurs that for the gas pressure in blast furnace gas supervisor net a part of coal gas being delivered to diffusing tower from explosion venting valve (1) when abnormal emits; After converging, the outlet of the outlet of variable valve (2) and explosion venting valve (1) is connected with the entrance of diffusing tower burner (6).
2. blast furnace gas pipeline venting of dust explosion protective device according to claim 1, is characterized in that: the venting of dust explosion film that is provided with aluminum in described explosion venting valve (1); The venting of dust explosion film that the nominal pressure of venting of dust explosion film is close with coal gas system safety control pressure.
3. blast furnace gas pipeline venting of dust explosion protective device according to claim 2, is characterized in that: the demarcation burstpressures of described venting of dust explosion film is less than safety control pressure.
4. blast furnace gas pipeline venting of dust explosion protective device according to claim 1 and 2, is characterized in that: the latus rectum of described explosion venting valve (1) is less than bleeder latus rectum.
5. blast furnace gas pipeline venting of dust explosion protective device according to claim 1, it is characterized in that: described diffusing tower burner (6) is connected with blast furnace gas main pipeline by the identical bleeder of three line structures, on each road bleeder, be provided with butterfly valve (4), blank-plate valve (3) and variable valve (2), the two ends that the variable valve (2) on pipeline is diffused on three tunnels are parallel with respectively the explosion venting valve (1) that venting pressure step type increases progressively.
6. blast furnace gas pipeline venting of dust explosion protective device according to claim 5, is characterized in that: the nominal pressure that three explosion venting valves on pipeline are diffused on described three tunnels differs 5kPa successively.
7. blast furnace gas pipeline venting of dust explosion protective device according to claim 1 or 5, is characterized in that: described butterfly valve (4) is electric butterfly valve, and blank-plate valve (3) is electronic blank-plate valve.
8. blast furnace gas pipeline venting of dust explosion protective device according to claim 1 or 5, is characterized in that: on the pipeline before described butterfly valve (4) entrance and on the pipeline of blank-plate valve (3) both sides, be all connected with standby bleeder (5).
9. blast furnace gas pipeline venting of dust explosion protective device according to claim 8, is characterized in that: on the pipeline of described blank-plate valve (3) both sides and variable valve (2) ingress, be provided with manhole (7).
10. blast furnace gas pipeline venting of dust explosion protective device according to claim 8, is characterized in that: on the pipeline between described blank-plate valve (3) and variable valve (2), be also provided with loop expansion pipe (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320604112.9U CN203530350U (en) | 2013-09-27 | 2013-09-27 | Blast furnace gas pipeline leakage protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320604112.9U CN203530350U (en) | 2013-09-27 | 2013-09-27 | Blast furnace gas pipeline leakage protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203530350U true CN203530350U (en) | 2014-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320604112.9U Expired - Fee Related CN203530350U (en) | 2013-09-27 | 2013-09-27 | Blast furnace gas pipeline leakage protective device |
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| CN (1) | CN203530350U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104566366A (en) * | 2015-01-13 | 2015-04-29 | 山东钢铁股份有限公司 | Heating furnace and flame nozzle pipeline system thereof |
| CN107327855A (en) * | 2017-07-26 | 2017-11-07 | 柳州钢铁股份有限公司 | Coal oven dithio-gas is diffused and igniter |
| CN109340580A (en) * | 2018-10-24 | 2019-02-15 | 宣城亚邦化工有限公司 | Coal gas superpressure safe release system |
| CN116334333A (en) * | 2023-03-22 | 2023-06-27 | 新疆八一钢铁股份有限公司 | Explosion-proof structure for top combustion type gas heating furnace |
-
2013
- 2013-09-27 CN CN201320604112.9U patent/CN203530350U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104566366A (en) * | 2015-01-13 | 2015-04-29 | 山东钢铁股份有限公司 | Heating furnace and flame nozzle pipeline system thereof |
| CN107327855A (en) * | 2017-07-26 | 2017-11-07 | 柳州钢铁股份有限公司 | Coal oven dithio-gas is diffused and igniter |
| CN107327855B (en) * | 2017-07-26 | 2023-06-06 | 柳州钢铁股份有限公司 | Raw coke oven gas diffusing and igniting device |
| CN109340580A (en) * | 2018-10-24 | 2019-02-15 | 宣城亚邦化工有限公司 | Coal gas superpressure safe release system |
| CN109340580B (en) * | 2018-10-24 | 2020-09-04 | 宣城亚邦化工有限公司 | Coal gas overpressure safety release system |
| CN116334333A (en) * | 2023-03-22 | 2023-06-27 | 新疆八一钢铁股份有限公司 | Explosion-proof structure for top combustion type gas heating furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20160927 |
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| CF01 | Termination of patent right due to non-payment of annual fee |