CN212247096U - Surplus coal gas combination valve diffuses device - Google Patents
Surplus coal gas combination valve diffuses device Download PDFInfo
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- CN212247096U CN212247096U CN202020974214.XU CN202020974214U CN212247096U CN 212247096 U CN212247096 U CN 212247096U CN 202020974214 U CN202020974214 U CN 202020974214U CN 212247096 U CN212247096 U CN 212247096U
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- 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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The utility model provides a surplus gas combination valve diffusing device, which comprises a gas main pipeline, wherein two ends of the gas main pipeline are respectively communicated with a gas main pipeline network and a gas diffusing tower, and a first regulating valve is arranged on the gas main pipeline; the gas pipeline system is characterized by further comprising at least two parallel pipelines which are connected with the gas main pipeline in parallel, parallel pipeline adjusting valves are arranged on the parallel pipelines, and the calibers of the first adjusting valve and the parallel pipeline adjusting valves are different. The application provides a surplus coal gas combination valve diffuses device through addding first governing valve, parallelly connected pipeline and parallelly connected pipeline governing valve, constitutes the regulating valve group from this, and the staff adjusts each regulating valve aperture according to the pressure value of coal gas main pipe network is nimble, and the regulation precision is higher, and coal gas main pipe network pressure is more stable, has reduced blast furnace gas pipe network loss of pressure.
Description
Technical Field
The utility model relates to a fan technical field, more specifically say, relate to a surplus coal gas combination valve diffuses device.
Background
In iron and steel enterprises, the matched use of a gas cabinet and a diffusion tower to diffuse excess blast furnace gas is an important measure for stabilizing the pressure of a blast furnace gas pipe network, realizing high-efficiency blending and management of blast furnace gas and realizing zero diffusion of blast furnace gas. However, during the disconnection maintenance of the gas holder, the pressure of the pipe network can be stabilized only by using the bleeding tower to bleed the excess gas, and since only one regulating butterfly valve is arranged on one remaining gas bleeding device to control the gas bleeding amount, in steel enterprises with many blast furnaces, a plurality of bleeding devices are usually arranged on the gas main pipe network to achieve gas balance, and the bleeding structure has the defects of complex control, low accuracy of regulating the pressure of the gas main pipe network, poor economical efficiency and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a surplus coal gas combination valve diffuses device, its simple structure, convenient operation adjusts the precision height, can reduce pipe network pressure fluctuation, reduces energy resource consumption.
The utility model provides a surplus gas combination valve diffusing device, which comprises a gas main pipeline, wherein two ends of the gas main pipeline are respectively communicated with a gas main pipeline network and a gas diffusing tower, and a first regulating valve is arranged on the gas main pipeline;
the gas pipeline system is characterized by further comprising at least two parallel pipelines which are connected with the gas main pipeline in parallel, parallel pipeline adjusting valves are arranged on the parallel pipelines, and the calibers of the first adjusting valve and the parallel pipeline adjusting valves are different.
Preferably, the number of the parallel pipelines is two, the parallel pipelines are respectively a first parallel pipeline and a second parallel pipeline, a second regulating valve is arranged on the first parallel pipeline, a third regulating valve is arranged on the second parallel pipeline, and the calibers of the second regulating valve, the third regulating valve and the first regulating valve are gradually increased.
Preferably, the gas main pipeline, the first parallel pipeline and the second parallel pipeline are provided with flow meters.
Preferably, the first regulating valve, the second regulating valve and the third regulating valve are all in communication connection with a controller, the controller is connected with the gas main pipe network and used for collecting the gas pressure value of the gas main pipe network, and the opening degrees of the first regulating valve, the second regulating valve and the third regulating valve are controlled according to the collected gas pressure value.
Preferably, the first regulating valve and each parallel pipeline regulating valve are specifically pneumatic automatic regulating butterfly valves.
Compared with the prior art, the utility model provides a surplus gas combination valve bleeding device, which comprises a gas main pipeline, wherein two ends of the gas main pipeline are respectively communicated with a gas main pipeline network and a gas bleeding tower, and a first regulating valve is arranged on the gas main pipeline; in addition, at least two parallel pipelines are connected in parallel with the main gas pipeline, parallel pipeline adjusting valves are arranged on the parallel pipelines, and the calibers of the first adjusting valve and the parallel pipeline adjusting valves are different. According to the control method, a traditional single-pipe type flow regulating valve is improved into the control valve group consisting of a plurality of regulating valves, the calibers of the regulating valves are different, the opening degree of each regulating valve is flexibly regulated according to the pressure value of a gas main pipe network, the pressure of the blast furnace gas branch pipe of the gas mixing station is stabilized, the energy consumption of secondary pressurization of the blast furnace gas is avoided, the regulating precision of the heat value quality of the mixed gas of the blast furnace gas and the coke oven gas after mixing is ensured, the performance is more stable, stable gas utilization of a blast furnace gas user is ensured, and the pressure loss of the blast furnace gas pipe network.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic view of a residual gas combination valve bleeding device provided by the present invention.
Wherein, 1-a gas main pipe network, 2-a gas diffusing tower, 3-a gas main pipe, 4-a first regulating valve, 5-a first parallel pipe, 6-a second parallel pipe, 7-a second regulating valve, 8-a third regulating valve, 9-a butterfly valve, 10-a glasses valve and 11-a flow meter.
Detailed Description
The core of the utility model is to provide a surplus coal gas combination valve diffuses device, retrieves coal gas and the uneven fluctuation of short-term of balanced whole factory blast furnace gas production and consumption effectively, stabilizes the pressure of blast furnace gas pipe network, guarantees that the power generation operation area plant is with the coal gas calorific value is even and pressure stability.
In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1, fig. 1 is a schematic view of a residual gas combination valve bleeding device provided by the present invention.
The utility model provides a surplus gas combination valve diffusing device, which comprises a gas main pipeline 3, wherein two ends of the gas main pipeline 3 are respectively communicated with a gas main pipeline network 1 and a gas diffusing tower 2, a first regulating valve 4 is arranged on the gas main pipeline 3, and in addition, a butterfly valve 9, a glasses valve 10 and a flowmeter 11 are sequentially arranged on the gas main pipeline 3; at least two parallel pipelines are arranged in parallel with the main gas pipeline 3, parallel pipeline adjusting valves are installed on the parallel pipelines, the calibers of the first adjusting valve 4 and the parallel pipeline adjusting valves on the parallel pipelines are different, and it can be understood that the flow of all the adjusting valves is not less than the total gas emission amount, so that the effective emission of the blast furnace gas is ensured.
This application adopts first governing valve 4 of installation on main gas pipeline 3, parallelly connected with main gas pipeline 3 sets up a plurality of parallelly connected pipelines, install the scheme of parallelly connected pipeline governing valve on parallelly connected pipeline, and guarantee that the valve head bore of each governing valve is different, the flow of each governing valve is different from this, each governing valve constitutes pressure control governing valve group, governing valve through different diameters comes the control regulation gas volume of loosing, can select governing valve quantity and each governing valve aperture of participation according to actual total volume of loosing during blast furnace gas diffuses, manual regulation is carried out to each governing valve, compare in the tradition and arrange the mode that the volume of loosing was controlled to the regulation butterfly valve on many diffusing devices of many diffusing devices and simultaneous control diffusing device and compare, this application simple process, it is more convenient to operate, economic cost is lower. Practical production verifies that by adopting the residual gas combination valve bleeding device, the pressure control range of the main gas pipe network 1 is improved from 7.5-12KPa to 9-11KPa, so that the pressure fluctuation of a power consumption pipe network is reduced, and the stable gas consumption of a blast furnace gas user is ensured; and in addition, during the maintenance period of the blast furnace gas cabinet, the power consumption is saved by more than 19 ten thousand yuan, and the production cost is obviously saved.
In one embodiment, the number of the parallel pipelines is two, which are respectively a first parallel pipeline 5 and a second parallel pipeline 6, the first parallel pipeline 5 is provided with a second regulating valve 7, the second parallel pipeline 6 is provided with a third regulating valve 8, the calibers of the second regulating valve 7, the third regulating valve 8 and the first regulating valve 4 are gradually increased, and the flow rates of the three regulating valves are respectively at least equal to the total gas dispersion rate.
For example, the first regulating valve 4, the second regulating valve 7 and the third regulating valve 8 are respectively selected, with the flow rates of 50%, 20% and 30% of the total gas dispersion: when the residual gas amount of the gas main pipe network 1 is less than 20%, only the second regulating valve 7 on the first parallel pipeline 5 is started to participate in regulation, and the rest regulating valves are closed; when the residual gas amount of the main pipe network is more than 20% and less than 30%, simultaneously starting a second regulating valve 7 on the first parallel pipeline 5 and a third regulating valve 8 on the second parallel pipeline 6, and closing the first regulating valve 4; when the residual gas quantity of the main pipe network is more than 50%, the first regulating valve 4, the second regulating valve 7 and the third regulating valve 8 are opened simultaneously, and the synchronous diffusion of the large-flow gas is realized. The gas main pipe network regulating device has the advantages of higher regulating precision, reduced pipe network pressure fluctuation, reduced pressure loss of the gas main pipe network 1 and low cost. Of course, the above proportion can be set according to the actual production situation, and is not limited herein.
Furthermore, in order to realize the observation of the gas flow of each pipeline, flowmeters can be installed on the main gas pipeline 3, the first parallel pipeline 5 and the second parallel pipeline 6, so that a worker can know the current flow of the pipeline through the flowmeters, and the opening of the valve is adjusted by comparing the target flow, thereby ensuring the accurate conveying of the gas.
Furthermore, the valve opening of the regulating valve can be accurately controlled through a controller, specifically, the first regulating valve 4, the second regulating valve 7 and the third regulating valve 8 are in communication connection with the controller, the controller is simultaneously connected with the gas main pipe network 1, the controller is provided with a pressure detection function of the gas main pipe network 1, the gas pressure value of the gas main pipe network 1 is collected through the controller, or the gas pressure is detected through a gas pressure detection device, the controller obtains the gas pressure through the gas pressure detection device, and the controller controls the opening of the first regulating valve 4, the second regulating valve 7 and the third regulating valve 8 according to the collected gas pressure value and a preset valve control program.
For example, when the pressure value of the gas main pipe network 1 is greater than 11KPa, the controller opens the second regulating valve 7 to open to perform gas diffusion; when the pressure value of the main gas pipe network 1 is more than 11.5KPa and less than 12KPa, the controller opens the second regulating valve 7 and the third regulating valve 8 for diffusion; when the pressure of the gas main pipe network 1 exceeds 12KPa, the controller simultaneously opens the first regulating valve 4, the second regulating valve 7 and the third regulating valve 8 for diffusion; when the pressure of the main gas pipe network 1 is gradually reduced to below 11KPa, the controller closes each valve and stops the blast furnace gas diffusion. It should be noted that, the above-mentioned reference values of the pressures and the opening degrees of the regulating valves may be set according to actual requirements, it can be understood that, when only the second regulating valve 7 is opened, the regulating valve is adjusted to the valve opening degree corresponding to the measured actual pressure, if the second regulating valve 7 and the third regulating valve 8 are opened at the same time, the second regulating valve 7 may be opened to the maximum, or the valve opening degrees may be appropriately adjusted to be small, and the two valves cooperate together to realize simultaneous diffusion of the gas; the method is suitable for simultaneously opening the three regulating valves, achieves fine regulation of the large-flow gas diffusion process, stabilizes the pressure of the pipe network, and avoids energy loss caused by re-pressurization of the blast furnace gas.
The first regulating valve 4 and the parallel conduit regulating valves are preferably, but not limited to, pneumatic automatic regulating butterfly valves. It should be noted that, regarding the specific structure and operation principle of the controller, each regulating valve and the pneumatic automatic regulating butterfly valve, please refer to the prior art, and the description is not expanded herein.
The residual gas combination valve diffusing device provided by the utility model is described in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (5)
1. The residual gas combined valve bleeding device is characterized by comprising a main gas pipeline (3), wherein two ends of the main gas pipeline (3) are respectively communicated with a main gas pipeline network (1) and a gas bleeding tower (2), and a first regulating valve (4) is arranged on the main gas pipeline (3);
the gas pipeline system is characterized by further comprising at least two parallel pipelines connected in parallel with the gas main pipeline (3), parallel pipeline adjusting valves are arranged on the parallel pipelines, and the calibers of the first adjusting valve (4) and the parallel pipeline adjusting valves are different.
2. The residual gas combination valve bleeding device according to claim 1, wherein the number of the parallel pipes is two, and the parallel pipes are a first parallel pipe (5) and a second parallel pipe (6), the first parallel pipe (5) is provided with a second regulating valve (7), the second parallel pipe (6) is provided with a third regulating valve (8), and the diameters of the second regulating valve (7), the third regulating valve (8) and the first regulating valve (4) are gradually increased.
3. The residual gas combination valve bleeding device according to claim 2, wherein flow meters are installed on the main gas pipe (3), the first parallel pipe (5) and the second parallel pipe (6).
4. The residual gas combination valve bleeding device according to claim 3, wherein the first regulating valve (4), the second regulating valve (7) and the third regulating valve (8) are all in communication connection with a controller, the controller is connected with the gas main pipe network (1) and used for collecting the gas pressure value of the gas main pipe network (1) and controlling the opening degrees of the first regulating valve (4), the second regulating valve (7) and the third regulating valve (8) according to the collected gas pressure value.
5. The residual gas combination valve bleeding device according to any one of claims 1 to 4, wherein the first regulating valve (4) and each parallel pipeline regulating valve are embodied as pneumatic automatic regulating butterfly valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020974214.XU CN212247096U (en) | 2020-06-01 | 2020-06-01 | Surplus coal gas combination valve diffuses device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020974214.XU CN212247096U (en) | 2020-06-01 | 2020-06-01 | Surplus coal gas combination valve diffuses device |
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| Publication Number | Publication Date |
|---|---|
| CN212247096U true CN212247096U (en) | 2020-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020974214.XU Active CN212247096U (en) | 2020-06-01 | 2020-06-01 | Surplus coal gas combination valve diffuses device |
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| CN (1) | CN212247096U (en) |
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2020
- 2020-06-01 CN CN202020974214.XU patent/CN212247096U/en active Active
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