CN210741145U - Gas pressure control structure on hot stove - Google Patents
Gas pressure control structure on hot stove Download PDFInfo
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- CN210741145U CN210741145U CN201921377087.9U CN201921377087U CN210741145U CN 210741145 U CN210741145 U CN 210741145U CN 201921377087 U CN201921377087 U CN 201921377087U CN 210741145 U CN210741145 U CN 210741145U
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Abstract
A novel gas pressure control structure on a heating furnace comprises: the gas pressure regulating valve is connected with the rear side of the stop valve, the annular pipeline is connected with the rear side of the gas pressure regulating valve, the tail end pressure transmitter is connected with the tail end of the annular pipeline, and the tail end pressure transmitter is connected with the gas pressure regulating valve. Compared with the prior art, the utility model has the advantages that the opening of the regulating valve is ensured to work in a linear range all the time under different working conditions by additionally arranging the two gas pressure regulating valves with different sizes in parallel; the tail end pressure transmitter is additionally arranged at the tail end of the annular pipeline close to the burner, and the gas pressure regulating valve is controlled through a pressure signal of the tail end pressure transmitter, so that frequent change of the opening of the regulating valve caused by too close distance between the transmitter and the regulating valve is avoided, and pressure fluctuation is caused.
Description
Technical Field
The utility model relates to a steel production processing field, concretely relates to novel gas pressure control structure on hot stove.
Background
The heating furnace of iron and steel enterprises in China mostly adopts coal gas as fuel, including blast furnace gas, coke oven gas, mixed coal gas, natural gas and the like. The mixed gas is usually mixed by high coke, converter or natural gas at a gas station to a certain required heat value, and then is conveyed to various downstream steel mills and other plants for use, the pressure fluctuation at the gas junction of the heating furnace is large due to the variation of the production capacity and the heat value of different upstream gas and the continuous variation of the capacity of downstream users, and the pressure fluctuation of the heating furnace is larger during the furnace starting period or the low-capacity period and often exceeds the regulating range of a pressure regulating valve.
In order to obtain good product quality and save energy, the burner of the heating furnace is required to be always in a stable combustion state, so that the fluctuation of the pressure of the gas main pipe is required to be controlled within a certain range, which is particularly important for the heating furnace adopting pulse control.
In order to solve the above problems, we have made a series of improvements.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel gas pressure control structure on hot stove to overcome the above-mentioned shortcoming and not enough that prior art exists.
A novel gas pressure control structure on a heating furnace comprises: the gas pressure regulating valve is connected with the rear side of the stop valve, the annular pipeline is connected with the rear side of the gas pressure regulating valve, the tail end pressure transmitter is connected with the tail end of the annular pipeline, and the tail end pressure transmitter is connected with the gas pressure regulating valve;
wherein, gas pressure regulating valve includes: the gas regulating valve comprises a first gas regulating valve, a second gas regulating valve, a small-caliber valve and a large-caliber valve, wherein the first gas regulating valve is connected with the second gas regulating valve in parallel, the large-caliber valve is arranged on the first gas regulating valve, and the small-caliber valve is arranged on the second gas regulating valve.
Further, the annular duct comprises: the gas burner comprises a gas main pipeline, a communicating pipeline and 4 burners, wherein the communicating pipeline is connected with the tail ends of the upper end and the lower end of the gas main pipeline, and the burners are connected with the gas main pipeline.
The utility model has the advantages that:
compared with the prior art, the utility model has the advantages that the opening of the regulating valve is ensured to work in a linear range all the time under different working conditions by additionally arranging the two gas pressure regulating valves with different sizes in parallel; the tail end pressure transmitter is additionally arranged at the tail end of the annular pipeline close to the burner, and the gas pressure regulating valve is controlled through a pressure signal of the tail end pressure transmitter, so that frequent change of the opening of the regulating valve caused by too close distance between the transmitter and the regulating valve is avoided, and pressure fluctuation is caused.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Reference numerals:
the gas pressure regulating valve comprises a pressure transmitter 100, a cut-off valve 200, a gas pressure regulating valve 300, a first gas regulating valve 310, a second gas regulating valve 320, a small-caliber valve 330 and a large-caliber valve 340.
The gas burner comprises a ring-shaped pipeline 400, a gas main pipeline 410, a communication pipeline 420, a burner 430 and a terminal pressure transmitter 500.
Detailed Description
The present invention will be further described with reference to the following examples. It should be understood that the following examples are illustrative only and are not intended to limit the scope of the present invention.
Example 1
Fig. 1 is a schematic structural diagram of the present invention.
As shown in fig. 1, a novel gas pressure control structure on a heating furnace includes: the gas pressure regulating valve comprises a pressure transmitter 100, a stop valve 200, a gas pressure regulating valve 300, an annular pipeline 400 and a tail end pressure transmitter 500, wherein the stop valve 200 is connected with the pressure transmitter 100, the gas pressure regulating valve 300 is connected with the rear side of the stop valve 200, the annular pipeline 400 is connected with the rear side of the gas pressure regulating valve 300, the tail end pressure transmitter 500 is connected with the tail end of the annular pipeline 400, and the tail end pressure transmitter 500 is connected with the gas pressure regulating valve 300;
wherein, the gas pressure regulating valve 300 includes: the gas regulating valve comprises a first gas regulating valve 310, a second gas regulating valve 320, a small-caliber valve 330 and a large-caliber valve 340, wherein the first gas regulating valve 310 is connected with the second gas regulating valve 320 in parallel, the large-caliber valve 340 is arranged on the first gas regulating valve 310, and the small-caliber valve 330 is arranged on the second gas regulating valve 320.
The ring line 400 includes: the gas burner comprises a main gas pipeline 410, a communicating pipeline 420 and 4 burners 430, wherein the communicating pipeline 420 is connected with the tail ends of the upper end and the lower end of the main gas pipeline 410, the burners 430 are connected with the main gas pipeline 410, and the number of the burners 430 is 4.
The working principle of the utility model is that firstly, the pressure transmitter 100 is installed to connect with the upstream gas pipeline for testing the pressure of the upstream gas, the rear side of the pressure transmitter 100 is connected with two cut-off valves 200 for cutting off the gas, two gas pressure regulating valves 300 with different sizes are arranged behind the cut-off valve 200 of the gas and are installed in parallel, the first gas regulating valve 310 and the second gas regulating valve 320, the second gas regulating valve 320 adopts a small-caliber valve 330, the first gas regulating valve 310 adopts a large-caliber valve 340, only the second gas regulating valve 320 is used in the oven or the low-capacity process, the first gas regulating valve 310 is closed, when the high-capacity process is carried out, the first gas regulating valve 310 and the second gas regulating valve 320 are simultaneously used according to a certain algorithm, the opening degree of the regulating valves is ensured to work in the linear range all the time under different working conditions, the terminal pressure transmitter 500 is arranged at the terminal of the gas main, the first gas regulating valve 310 and the second gas regulating valve 320 are connected and controlled through a pressure signal of the terminal pressure transmitter 500, so that frequent change of the opening of the regulating valves caused by too close distance between the transmitter and the regulating valves is avoided, pressure fluctuation is caused, the communication pipeline 420 is arranged at the tail end of the gas main pipeline 410 to form the annular pipeline 400, and the main pipeline pressure fluctuation caused by the change of the heat load of a single burner 430 is avoided. The utility model is additionally provided with two gas pressure regulating valves with different sizes which are installed in parallel, thereby ensuring that the opening of the regulating valve always works in a linear range under different working conditions; the tail end pressure transmitter is additionally arranged at the tail end of the annular pipeline close to the burner, and the gas pressure regulating valve is controlled through a pressure signal of the tail end pressure transmitter, so that frequent change of the opening of the regulating valve caused by too close distance between the transmitter and the regulating valve is avoided, and pressure fluctuation is caused.
The above description has been made of the embodiments of the present invention, but the present invention is not limited thereto, and various changes may be made without departing from the spirit of the present invention.
Claims (2)
1. A gas pressure control structure on a heating furnace is characterized by comprising: the gas pressure regulating valve comprises a pressure transmitter (100), a stop valve (200), a gas pressure regulating valve (300), an annular pipeline (400) and a tail end pressure transmitter (500), wherein the stop valve (200) is connected with the pressure transmitter (100), the gas pressure regulating valve (300) is connected with the rear side of the stop valve (200), the annular pipeline (400) is connected with the rear side of the gas pressure regulating valve (300), the tail end pressure transmitter (500) is connected with the tail end of the annular pipeline (400), and the tail end pressure transmitter (500) is connected with the gas pressure regulating valve (300);
wherein the gas pressure regulating valve (300) comprises: the gas regulating valve comprises a first gas regulating valve (310), a second gas regulating valve (320), a small-caliber valve (330) and a large-caliber valve (340), wherein the first gas regulating valve (310) is connected with the second gas regulating valve (320) in parallel, the large-caliber valve (340) is arranged on the first gas regulating valve (310), and the small-caliber valve (330) is arranged on the second gas regulating valve (320).
2. The gas pressure control structure on the heating furnace of claim 1, wherein: the annular duct (400) comprising: the gas burner comprises a gas main pipeline (410), a communicating pipeline (420) and burners (430), wherein the communicating pipeline (420) is connected with the tail ends of the upper end and the lower end of the gas main pipeline (410), the burners (430) are connected with the gas main pipeline (410), and the number of the burners (430) is 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921377087.9U CN210741145U (en) | 2019-08-22 | 2019-08-22 | Gas pressure control structure on hot stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921377087.9U CN210741145U (en) | 2019-08-22 | 2019-08-22 | Gas pressure control structure on hot stove |
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| Publication Number | Publication Date |
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| CN210741145U true CN210741145U (en) | 2020-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921377087.9U Active CN210741145U (en) | 2019-08-22 | 2019-08-22 | Gas pressure control structure on hot stove |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110822467A (en) * | 2019-11-24 | 2020-02-21 | 陕西北元化工集团股份有限公司 | Calcium carbide waste heat tail gas boiler combustion system |
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2019
- 2019-08-22 CN CN201921377087.9U patent/CN210741145U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110822467A (en) * | 2019-11-24 | 2020-02-21 | 陕西北元化工集团股份有限公司 | Calcium carbide waste heat tail gas boiler combustion system |
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