CN202583849U - Coke oven gas pipeline low-pressure automatic protection system - Google Patents
Coke oven gas pipeline low-pressure automatic protection system Download PDFInfo
- Publication number
- CN202583849U CN202583849U CN2012201856985U CN201220185698U CN202583849U CN 202583849 U CN202583849 U CN 202583849U CN 2012201856985 U CN2012201856985 U CN 2012201856985U CN 201220185698 U CN201220185698 U CN 201220185698U CN 202583849 U CN202583849 U CN 202583849U
- Authority
- CN
- China
- Prior art keywords
- coke oven
- detection switch
- pressure
- oven gas
- pressure detection
- 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 - Lifetime
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Landscapes
- Coke Industry (AREA)
Abstract
The utility model discloses a coke oven gas pipeline low-pressure automatic protection system, belonging to the technical field of coke oven gas supply in metallurgical industry. The coke oven gas pipeline low-pressure automatic protection system comprises a pressure detection switch arranged on a gas delivery pipeline, wherein the pressure detection switch comprises a low-pressure detection switch and a high-pressure detection switch; the gas delivery pipeline at a coke oven gas outlet of the coke oven is connected with a nitrogen delivery pipeline, and the nitrogen delivery pipeline is provided with an electropneumatic valve; the electropneumatic valve is connected with a field PLC (programmable logic controller); and the pressure detection switch is connected with an input end of the field PLC. The pressure detection switch is arranged on the gas delivery pipeline to implement real-time monitoring of the pressure signal, and the field PLC is utilized to implement opening and closing of the electropneumatic valve and the opening and closing of the nitrogen delivery pipeline, thereby ensuring that the pressure value in the gas delivery pipeline to be within the safe range, and effectively avoiding gas back flow accidents.
Description
Technical field
The utility model relates to a kind of coke oven gas pipe low pressure automatic protective system, belongs to metallurgy industry coke-oven gas provisioning technique field.
Background technology
Coke-oven gas is claimed oven gas again, is to be mixed with coal for coking with several kinds of bituminous coal, and through behind the high temperature carbonization, a kind of inflammable gas that in output coke and tar product, is produced is the secondary product of coking industry in coke oven.The coke-oven gas of coke oven output is supplied with each user after pipeline is incorporated into the power networks.If coke oven blower fan catastrophic failure is shut down, coke oven gas pipe pressure disappears, and pipe backfire maybe be accidents caused, has a strong impact on each user's normal use, causes immeasurable loss.
The utility model content
The utility model technical matters to be solved provides a kind of coke oven gas pipe low pressure automatic protective system, can effectively avoid the generation of gas pipeline tempering accident, guarantees safety in production.
For solving the problems of the technologies described above; The technical scheme that the utility model is taked is: a kind of coke oven gas pipe low pressure automatic protective system; Comprise the pressure detection switch that is arranged on the gas pipeline, said every group of pressure detection switch comprises a low pressure detector switch and a high pressure detector switch; On the gas pipeline in the coke-oven gas exit that is positioned at coke oven, be connected with nitrogen gas delivery-line, on said nitrogen gas delivery-line, be provided with an electropneumatic valve; Said electropneumatic valve is connected with the output terminal of on-the-spot PLC controller, and said pressure detection switch is connected with the input end of on-the-spot PLC controller.
The quantity of said pressure detection switch is more than three groups.
On gas pipeline, also be provided with pressure unit, said pressure unit is connected with the input end of on-the-spot PLC controller.
On said nitrogen gas delivery-line, also be provided with two hand switch valves; Said on-the-spot PLC controller is connected with the remote PLC control device through Ethernet.Said each hand switch valve is as the usefulness of maintenance or the manual intervention during system exception.
The model of said low pressure detector switch and high pressure detector switch is H100-524; The model of said pressure unit is SSK210-GA1MA3N2N3; The model of said electropneumatic valve is DJ-520; The model of said hand switch valve is J41TDN80, and the model of said on-the-spot PLC controller is S7-300, and the model of said remote PLC control device is S7-200.
System work process is following: the pressure detection switch that is installed on the gas pipeline is used for detecting the force value on the gas pipeline; When force value is lower than 2KPa, the conducting of low pressure detector switch, and send the low pressure signal to on-the-spot PLC controller; On-the-spot PLC controller control ecp opening of valves; Gas conveying tube road supplying nitrogen is given in the nitrogen gas delivery-line conducting, guarantees that the force value in the gas pipeline is in the safe range; When pressure detection switch detects force value on the gas pipeline and is higher than 11KPa; The conducting of high pressure detector switch; And send the high-pressure signal to on-the-spot PLC controller, and on-the-spot PLC controller control electropneumatic valve is closed, and nitrogen gas delivery-line stops to gas conveying tube road supplying nitrogen.Thereby guarantee the safety of coke-oven gas conveyance conduit.
Pressure unit is used for the simulating signal of the force value in the gas pipeline is passed to on-the-spot PLC controller in real time, thereby reaches the purpose of real-time monitoring pressure detector switch action accuracy.
In addition; Because on-the-spot PLC controller is unattended, therefore, it is connected with the remote PLC control device; Monitor the various status signals of on-the-spot PLC controller in real time by the remote PLC control device; In case note abnormalities, will in time point out the related personnel that trouble location is checked, the stability and the reliability of the operation of assurance system.Under abnormal conditions such as scene outage, the remote PLC control device by the conducting of the realization of the hand switch valve on staff's operated from a distance nitrogen gas delivery-line of remote control room pipeline, avoids accident to take place output alarm signal.
Adopt the beneficial effect that technique scheme produced to be: the real-time monitoring of pressure signal is realized through pressure detection switch is set in (1) on gas pipeline; Realize open and close through on-the-spot PLC controller to electropneumatic valve; The conducting that realizes nitrogen gas delivery-line with close; Thereby the force value in the assurance gas pipeline is in the safe range, effectively avoids coal gas to pour in down a chimney the generation of accident.
(2) through on-the-spot PLC controller is connected with the remote PLC control device, realize the real-time monitoring of remote control room to the scene, occur solving a problem promptly when unusual, guarantee safety in production.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.
Fig. 1 is system's connection layout of the utility model;
Wherein, 1, coke oven, 2, gas pipeline, 3, the low pressure detector switch, 4, the high pressure detector switch, 5, pressure unit, 6, nitrogen gas delivery-line, 7, electropneumatic valve, 8, the hand switch valve, 9, on-the-spot PLC controller, 10, remote PLC control device.
Embodiment
Embodiment as shown in Figure 1 can know; The described coke oven gas pipe low pressure of the utility model automatic protective system; Comprise three groups of pressure detection switch and a pressure unit 5 of being arranged on the gas pipeline 2, said every group of pressure detection switch comprises a low pressure detector switch 3 and a high pressure detector switch 4; On the gas pipeline 2 in the coke-oven gas exit that is positioned at coke oven 1, be connected with nitrogen gas delivery-line 6, on said nitrogen gas delivery-line 6, be provided with an electropneumatic valve 7; Said electropneumatic valve 7 is connected with the output terminal of on-the-spot PLC controller 9, and said pressure detection switch is connected with the input end of on-the-spot PLC controller 9 respectively with pressure unit 5.
On said nitrogen gas delivery-line 6, also be provided with two hand switch valves 8; Said on-the-spot PLC controller 9 is connected with remote PLC control device 10 through Ethernet.
The model of said low pressure detector switch 3 and high pressure detector switch 4 is H100-524; The model of said pressure unit 5 is SSK210-GA1MA3N2N3; The model of said electropneumatic valve 7 is DJ-520; The model of said hand switch valve 8 is J41TDN80, and the model of said on-the-spot PLC controller 9 is S7-300, and the model of said remote PLC control device 10 is S7-200.
The pressure detection switch that is installed on the gas pipeline is used for detecting the force value on the gas pipeline 2; When force value is lower than 2KPa, 3 conductings of low pressure detector switch, and send the low pressure signal to on-the-spot PLC controller 9; On-the-spot PLC controller 9 control electropneumatic valves 7 are opened; Gas conveying tube road 2 supplying nitrogens are given in nitrogen gas delivery-line 6 conductings, guarantee that the force value in the gas pipeline 2 is in the safe range; When pressure detection switch detects force value on the gas pipeline 2 and is higher than 11KPa; 4 conductings of high pressure detector switch; And send the high-pressure signal to on-the-spot PLC controller 9; On-the-spot PLC controller 9 control electropneumatic valves 7 are closed, and nitrogen gas delivery-line 6 stops to gas conveying tube road 2 supplying nitrogens.Thereby guarantee the safety of coke-oven gas conveyance conduit 2.
When field control system occurs when unusual; Under abnormal conditions such as scene outage; The remote PLC control device by the conducting of the realization of the hand switch valve on staff's operated from a distance nitrogen gas delivery-line of remote control room pipeline, avoids accident to take place output alarm signal.
Claims (6)
1. a coke oven gas pipe low pressure automatic protective system is characterized in that, comprises the pressure detection switch that is arranged on the gas pipeline (2), and said pressure detection switch comprises a low pressure detector switch (3) and a high pressure detector switch (4); On the gas pipeline (2) in the coke-oven gas exit that is positioned at coke oven (1), be connected with nitrogen gas delivery-line (6), on said nitrogen gas delivery-line (6), be provided with an electropneumatic valve (7); Said electropneumatic valve (7) is connected with the output terminal of on-the-spot PLC controller (9), and said pressure detection switch is connected with the input end of on-the-spot PLC controller (9).
2. coke oven gas pipe low pressure automatic protective system according to claim 1 is characterized in that the quantity of said pressure detection switch is more than three groups.
3. coke oven gas pipe low pressure automatic protective system according to claim 1 is characterized in that, on gas pipeline (2), also is provided with pressure unit (5), and said pressure unit (5) is connected with the input end of on-the-spot PLC controller (9).
4. coke oven gas pipe low pressure automatic protective system according to claim 1 is characterized in that, on said nitrogen gas delivery-line (6), also is provided with two hand switch valves (8); Said on-the-spot PLC controller (9) is connected with remote PLC control device (10) through Ethernet.
5. coke oven gas pipe low pressure automatic protective system according to claim 3; It is characterized in that; The model of said low pressure detector switch (3) and high pressure detector switch (4) is H100-524; The model of said pressure unit (5) is SSK210-GA1MA3N2N3, and the model of said electropneumatic valve (7) is DJ-520.
6. coke oven gas pipe low pressure automatic protective system according to claim 4; It is characterized in that; The model of said hand switch valve (8) is J41TDN80, and the model of said on-the-spot PLC controller (9) is S7-300, and the model of said remote PLC control device (10) is S7-200.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201856985U CN202583849U (en) | 2012-04-27 | 2012-04-27 | Coke oven gas pipeline low-pressure automatic protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201856985U CN202583849U (en) | 2012-04-27 | 2012-04-27 | Coke oven gas pipeline low-pressure automatic protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202583849U true CN202583849U (en) | 2012-12-05 |
Family
ID=47253241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201856985U Expired - Lifetime CN202583849U (en) | 2012-04-27 | 2012-04-27 | Coke oven gas pipeline low-pressure automatic protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202583849U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620145A (en) * | 2012-04-27 | 2012-08-01 | 新兴铸管股份有限公司 | Automatic low-pressure protection system for coke oven gas pipeline |
| CN111120858A (en) * | 2019-11-25 | 2020-05-08 | 宣化钢铁集团有限责任公司 | Exhaust gas recovery control system and control method thereof |
-
2012
- 2012-04-27 CN CN2012201856985U patent/CN202583849U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620145A (en) * | 2012-04-27 | 2012-08-01 | 新兴铸管股份有限公司 | Automatic low-pressure protection system for coke oven gas pipeline |
| CN111120858A (en) * | 2019-11-25 | 2020-05-08 | 宣化钢铁集团有限责任公司 | Exhaust gas recovery control system and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102620145A (en) | Automatic low-pressure protection system for coke oven gas pipeline | |
| CN202583849U (en) | Coke oven gas pipeline low-pressure automatic protection system | |
| CN102580863A (en) | Nitrogen protection device of centrifugal machine | |
| CN203247283U (en) | Device for measuring micro differential pressure at converter opening | |
| CN207865034U (en) | A kind of gas pressure regulating system | |
| CN202756726U (en) | Gas-liquid linkage cut-off valve control system on oil-gas conveying pipeline | |
| CN103742270A (en) | Purging pipeline monitoring method of combustor | |
| CN101787969B (en) | Numerical control system of minimum flow valve of governing feedwater pump and minimum flow control method thereof | |
| CN209131422U (en) | A kind of coke oven flue gas system for desulfuration and denitration failure emergency treatment device | |
| CN105755202A (en) | Oxygen pipeline system and anti-blasting device of extra-large converter oxygen lance valve station | |
| CN202709178U (en) | Natural gas ignition system of pulverized coal flame furnace | |
| CN201944547U (en) | System for compressed natural gas supply station | |
| CN105573223A (en) | Novel gas leak monitoring system | |
| CN205064990U (en) | Take gas trip valve of valve position teletransmission function | |
| CN207050487U (en) | A kind of tube furnace entrance coal gas fast cut valve protection device | |
| CN204039422U (en) | A kind of coal powder injection interlock control system | |
| CN203663695U (en) | Reducing agent metering and distributing device for SNCR (selective non-catalytic reduction) denitration of cement kiln | |
| CN203322439U (en) | Quick cutting-off control device of electrically operated valve | |
| CN202526814U (en) | Quick water-filling and exhaust system for fire fighting sprinkling pipe network | |
| CN204704613U (en) | A kind of chemical system automatic overvoltage bleeder | |
| RU2487372C1 (en) | Remote radiation monitoring system | |
| CN207634778U (en) | More electromagnetic valve controlling systems that a kind of coal pulverizer outlet speed is closed the door | |
| CN102094684A (en) | Small-sized safety protection system for turbomachine set | |
| CN103775214A (en) | Monitoring device for scavenging line of gas turbine | |
| CN203287766U (en) | Monitoring device for detecting leakage of hydrogen into inner cooling water and evaluating impact on quality of inner cooling water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121205 |