CN213656321U - Vacuum refining facility final-stage screw pump with cooling and explosion-proof structure - Google Patents
Vacuum refining facility final-stage screw pump with cooling and explosion-proof structure Download PDFInfo
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- CN213656321U CN213656321U CN202022713402.XU CN202022713402U CN213656321U CN 213656321 U CN213656321 U CN 213656321U CN 202022713402 U CN202022713402 U CN 202022713402U CN 213656321 U CN213656321 U CN 213656321U
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Abstract
The utility model relates to a vacuum refining facility final stage screw pump with cooling and explosion-proof structure, including concatenating the final stage screw pump body on the vacuum line, it has cooling and explosion-proof structure still to communicate on the final stage screw pump body, cooling and explosion-proof structure are including parallelly connected air input pipeline and the carbon dioxide input pipeline that sets up, the export of air input pipeline or air input pipeline with final stage screw pump body intercommunication, the air input pipeline can be to final stage screw pump body and vacuum line air delivery in order to cool off the final stage screw pump body, the carbon dioxide input pipeline can carry carbon dioxide gas in order to play cooling and explosion-proof effects to final stage screw pump body and vacuum line. The utility model discloses can effectively utilize carbon dioxide and reduce carbon dioxide and discharge, play beneficial effect to reducing greenhouse gas and discharging, improving living environment.
Description
Technical Field
The utility model relates to a vacuum refining technical field of steel smelting trade especially relates to a vacuum refining facility final stage screw pump with cooling and explosion-proof structure.
Background
With the increasing shortage of global energy and the increasing of climate warming, the emission reduction of greenhouse gases mainly comprising carbon dioxide has become a problem of high social concern. Global climate change caused by the emission of greenhouse gases such as carbon dioxide brings complex influence on global agriculture, water resources, ecosystem, human health, society and human living environment.
In the steel smelting industry, the recycling of carbon dioxide in a plurality of procedures such as an electric furnace, a converter, refining and the like is researched, and the emission of the carbon dioxide is reduced.
In the oxygen blowing smelting process of the vacuum refining facility, gas containing a large amount of carbon monoxide is generated, and a large amount of heat is generated in the operation of a final-stage screw pump, so that the final-stage screw pump of the mechanical vacuum pump system needs to be injected with inert gas for cooling and explosion prevention.
Therefore, the inventor provides a final-stage screw pump of a vacuum refining facility with a cooling and explosion-proof structure by virtue of experience and practice of related industries for many years so as to reduce carbon dioxide emission in an oxygen blowing smelting process of the vacuum refining facility.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a vacuum refining facility final stage screw pump with cooling and explosion-proof structure, the utility model discloses can effectively utilize carbon dioxide and reduce carbon dioxide and discharge, play beneficial effect to reducing greenhouse gas emission, improving living environment.
The utility model aims at realizing like this, a vacuum refining facility final stage screw pump with cooling and explosion-proof structure, including concatenating the final stage screw pump body on the vacuum line, it has cooling and explosion-proof structure still to communicate on the final stage screw pump body, cooling and explosion-proof structure are including parallelly connected air input pipeline and the carbon dioxide input pipeline that sets up, the export of air input pipeline or air input pipeline with final stage screw pump body intercommunication, air input pipeline can be to final stage screw pump body and vacuum line transport air with the cooling final stage screw pump body, carbon dioxide input pipeline can carry carbon dioxide gas in order to play cooling and explosion-proof effect to final stage screw pump body and vacuum line.
The utility model discloses an in a preferred embodiment, first flowmeter, first thermometer and first manometer have concatenated on the air input pipeline, still set up the first ooff valve of control break-make on the air input pipeline.
The utility model discloses an in a preferred embodiment, second flowmeter, second thermometer and second manometer have concatenated on the carbon dioxide input pipeline, still set up the second ooff valve of control break-make on the carbon dioxide input pipeline.
In a preferred embodiment of the present invention, the inlet of the air input pipeline is communicated with the atmosphere.
In a preferred embodiment of the present invention, the inlet of the carbon dioxide input pipeline is communicated with the carbon dioxide gas storage tank.
In a preferred embodiment of the present invention, the inlet of the carbon dioxide input pipeline is communicated with the workshop pipe network.
The utility model discloses an in a preferred embodiment, second flowmeter, second thermometer and second manometer have concatenated on the carbon dioxide input pipeline, still set up the second ooff valve of control break-make on the carbon dioxide input pipeline.
In a preferred embodiment of the present invention, the inlet of the carbon dioxide input pipeline is communicated with the carbon dioxide storage tank or the workshop pipe network.
The present invention provides a preferred embodiment, wherein a first inlet, a second inlet and a first outlet are provided on the final stage screw pump body, the first inlet and the first outlet are connected in series with a communicating vacuum pipeline, the outlet of the air input pipeline and the outlet of the carbon dioxide input pipeline can be communicated with the second inlet.
In a preferred embodiment of the present invention, the vacuum pipeline is located at the first inlet and is provided with a third flow meter, a third thermometer, a third pressure meter and a third control valve, and the vacuum pipeline is located at the first outlet and is provided with a fourth flow meter, a fourth thermometer, a fourth pressure meter and a fourth control valve.
From top to bottom, an object of the utility model is to provide a vacuum refining facility final stage screw pump with cooling and explosion-proof construction has following beneficial effect:
the utility model provides a vacuum refining facility final-stage screw pump with a cooling and explosion-proof structure, which is communicated with the cooling and explosion-proof structure, wherein the cooling and explosion-proof structure comprises an air input pipeline and a carbon dioxide input pipeline, and the air input pipeline can convey air to the final-stage screw pump body and the vacuum pipeline to play a cooling role; the carbon dioxide input pipeline can convey carbon dioxide gas to the final-stage screw pump body and the vacuum pipeline to play a cooling role, and simultaneously the carbon dioxide can dilute carbon monoxide in the vacuum pipeline to play an explosion-proof role;
carbon dioxide gas is sucked into the vacuum pipeline, so that the carbon dioxide gas can be effectively utilized, the emission of carbon dioxide is reduced, and the environment is improved;
the cost of the carbon dioxide gas is lower than the cost of inert gases such as nitrogen, argon and the like, and the carbon dioxide gas is used for cooling and explosion prevention, so that the smelting cost of the steel smelting vacuum refining process can be reduced, and the economic benefit of steel enterprises is improved.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:
FIG. 1: is a schematic diagram of a final-stage screw pump of a vacuum refining facility with a cooling and explosion-proof structure.
In the figure:
100. a final-stage screw pump of a vacuum refining facility provided with a cooling and explosion-proof structure;
1. a final-stage screw pump body; 11. a first inlet; 12. a second inlet; 13. a first outlet;
2. a cooling and explosion-proof structure; 21. an air input line; 22. a carbon dioxide input line;
3. a vacuum line;
41. a first flow meter; 42. a second flow meter; 43. a third flow meter; 44. a fourth flow meter;
51. a first thermometer; 52. a second thermometer; 53. a third thermometer; 54. a fourth thermometer;
61. a first pressure gauge; 62. a second pressure gauge; 63. a third pressure gauge; 64. a fourth pressure gauge;
71. a first on-off valve; 72. a second on-off valve; 73. a third control valve; 74. a fourth control valve.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.
The specific embodiments of the present invention described herein are for the purpose of explanation only and should not be construed as limiting the invention in any way. Given the teachings of the present invention, the skilled person can conceive of any possible variants based on the invention, which should all be considered as belonging to the scope of the invention. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, indirect connections through intermediaries, and the like. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, the utility model provides a final stage screw pump 100 of vacuum refining facility with cooling and explosion-proof structure, the vacuum refining facility mainly comprises a steel-making refining facility needing vacuum pumping, such as an RH vacuum refining furnace, a VD vacuum refining furnace, a VOD vacuum refining furnace, etc., the vacuum refining facility is communicated with a vacuum pipeline, and the final stage screw pump is connected on the vacuum pipeline; the working stages of the vacuum refining facility comprise a non-oxygen blowing smelting stage and an oxygen blowing smelting stage, wherein the vacuum pipeline in the non-oxygen blowing smelting stage does not contain carbon monoxide gas, and the vacuum pipeline in the oxygen blowing smelting stage contains carbon monoxide gas (in the prior art);
the utility model discloses a concatenate final stage screw pump body 1 on vacuum pipeline 3, it has cooling and explosion-proof structure 2 still to communicate on the final stage screw pump body 1, cooling and explosion-proof structure 2 is including parallelly connected air input pipeline 21 and the carbon dioxide input pipeline 22 that sets up, the export of air input pipeline 21 or the export of air input pipeline 21 communicate with final stage screw pump body 1, air input pipeline 21 can be to final stage screw pump body 1 and vacuum pipeline 3 air delivery in order to cool off final stage screw pump body 1, at the non-oxygen blowing smelting stage of vacuum refining facility, because do not contain carbon monoxide in the vacuum pipeline, no oxygen combines the risk that the emergence is exploded with carbon monoxide, carry air to final stage screw pump body 1 and vacuum pipeline 3 through air input pipeline 21, adopt the air to cool off final stage screw pump body 1; in the oxygen blowing smelting stage of the vacuum refining facility, because a large amount of carbon monoxide exists in the vacuum pipeline, in order to avoid the explosion caused by the combination of oxygen and carbon monoxide, the air input pipeline 21 is in a closed state;
the carbon dioxide input pipeline 22 can convey carbon dioxide gas to the final-stage screw pump body 1 and the vacuum pipeline 3 to play a cooling and explosion-proof role, in the oxygen blowing smelting stage of the vacuum refining facility, because a large amount of carbon monoxide exists in the vacuum pipeline, in order to avoid the explosion caused by the combination of oxygen and carbon monoxide, the carbon dioxide gas is conveyed to the final-stage screw pump body 1 and the vacuum pipeline 3 through the carbon dioxide input pipeline 22, the carbon dioxide gas is adopted to cool the final-stage screw pump body 1, the carbon monoxide in the vacuum pipeline is diluted, and the cooling and explosion-proof roles are played.
The utility model provides a vacuum refining facility final-stage screw pump with a cooling and explosion-proof structure, which is communicated with the cooling and explosion-proof structure, wherein the cooling and explosion-proof structure comprises an air input pipeline and a carbon dioxide input pipeline, and the air input pipeline can convey air to the final-stage screw pump body and the vacuum pipeline to play a cooling role; the carbon dioxide input pipeline can convey carbon dioxide gas to the final-stage screw pump body and the vacuum pipeline to play a cooling role, meanwhile, the carbon dioxide can dilute the carbon monoxide in the vacuum pipeline to play an explosion-proof role, and the carbon dioxide gas is sucked into the vacuum pipeline, so that the carbon dioxide gas can be effectively utilized, the carbon dioxide emission is reduced, and the beneficial effect on improving the environment is achieved; the cost of the carbon dioxide gas is lower than the cost of inert gases such as nitrogen, argon and the like, and the carbon dioxide gas is used for cooling and explosion prevention, so that the smelting cost of the steel smelting vacuum refining process can be reduced, and the economic benefit of steel enterprises is improved.
Further, as shown in fig. 1, the first flowmeter 41, the first thermometer 51 and the first pressure gauge 61 are connected in series to the air input pipeline 21, the first flowmeter 41, the first thermometer 51 and the first pressure gauge 61 can monitor and feed back parameters of flow, temperature and pressure of the air input pipeline 21, and the type of the gauge can be adjusted according to actual requirements. The air input pipeline 21 is also provided with a first switch valve 71 for controlling on-off. In the non-oxygen blowing smelting stage of the vacuum refining facility, the first switch valve 71 is in an open state, the air input pipeline 21 is communicated with the last-stage screw pump body 1, and air cools the last-stage screw pump body 1; in the oxygen-blown smelting stage of the vacuum refining facility, the first on-off valve 71 is in a closed state.
In the present embodiment, the inlet of the air input line 21 is provided in communication with the atmosphere. In the oxygen blowing smelting stage of the vacuum refining facility, a large amount of carbon monoxide exists in the vacuum pipeline, the air in the atmosphere contains oxygen, and in order to avoid explosion caused by combination of the oxygen and the carbon monoxide, the air input pipeline 21 is disconnected with the final-stage screw pump body 1; in the non-oxygen blowing smelting stage of the vacuum refining facility, the vacuum pipeline does not contain carbon monoxide, the first switch valve 71 is in an open state, the air input pipeline 21 is communicated with the final-stage screw pump body 1, and air cools the final-stage screw pump body 1.
Further, as shown in fig. 1, a second flow meter 42, a second temperature meter 52 and a second pressure meter 62 are connected in series to the carbon dioxide input pipeline 22, the second flow meter 42, the second temperature meter 52 and the second pressure meter 62 can monitor and feed back parameters of flow, temperature and pressure of the carbon dioxide input pipeline 22, and the types of the meters can be adjusted according to actual requirements. The carbon dioxide input pipeline 22 is also provided with a second on-off valve 72 for controlling on-off. In the oxygen blowing smelting stage of the vacuum refining facility, because a large amount of carbon monoxide exists in the vacuum pipeline, in order to avoid explosion caused by combination of oxygen and carbon monoxide, the air input pipeline 21 is disconnected from the last-stage screw pump body 1, the second switch valve 72 is in an open state, the carbon dioxide input pipeline 22 is communicated with the last-stage screw pump body 1, carbon dioxide gas cools the last-stage screw pump body 1, and carbon monoxide in the vacuum pipeline is diluted, so that the cooling and explosion-proof effects are achieved.
In the present embodiment, the inlet of the carbon dioxide gas input line 22 is provided in communication with a carbon dioxide gas tank or a plant pipe network. Carbon dioxide gas from a gas storage tank or a workshop pipe network can enter the vacuum pipeline 3 through the carbon dioxide input pipeline 22 and the final-stage screw pump body 1, the carbon dioxide gas generated in workshop production is not directly discharged any more, but enters the final-stage screw pump body 1 and the vacuum pipeline 3, carbon dioxide is effectively utilized, carbon dioxide discharge is reduced, and the environment is improved.
Further, as shown in fig. 1, the final-stage screw pump body 1 is provided with a first inlet 11, a second inlet 12 and a first outlet 13, the first inlet 11 and the first outlet 13 are connected in series to communicate with the vacuum pipeline 3, and an outlet of the air input pipeline 21 and an outlet of the carbon dioxide input pipeline 22 can communicate with the second inlet 12.
Further, as shown in fig. 1, a third flow meter 43, a third temperature meter 53, a third pressure gauge 63 and a third control valve 73 are arranged at the first inlet 11 of the vacuum pipeline 3, the third flow meter 43, the third temperature meter 53 and the third pressure gauge 63 monitor and feed back flow, temperature and pressure parameters of the vacuum pipeline 3 before the first inlet 11 of the final stage screw pump body 1, and the types of the meters can be adjusted according to actual requirements;
the vacuum line 3 is provided with a fourth flow meter 44, a fourth temperature gauge 54, a fourth pressure gauge 64 and a fourth control valve 74 at the first outlet 13. The fourth flowmeter 44, the fourth thermometer 54 and the fourth pressure gauge 64 monitor and feed back the flow, temperature and pressure parameters of the vacuum pipeline 3 behind the first outlet 13 of the final stage screw pump body 1, and the types of the meters can be adjusted according to actual requirements.
The working process of the vacuum refining facility final-stage screw pump 100 with the cooling and explosion-proof structure of the utility model is as follows:
when the vacuum refining facility carries out non-oxygen blowing smelting, as the vacuum pipeline does not contain carbon monoxide, the risk of explosion caused by the combination of oxygen and carbon monoxide does not exist, the second switch valve 72 is closed (the carbon dioxide input pipeline 22 is in a disconnected state), the first switch valve 71 is in an open state, the air input pipeline 21 conveys air to the final-stage screw pump body 1 and the vacuum pipeline 3, and the air cools the final-stage screw pump body 1 and the vacuum pipeline 3;
when the vacuum refining facility carries out oxygen blowing smelting, a large amount of carbon monoxide exists in the vacuum pipeline 3, in order to avoid explosion caused by combination of oxygen and the carbon monoxide, the air input pipeline 21 is disconnected from the last-stage screw pump body 1, the second switch valve 72 is in an open state, the carbon dioxide input pipeline 22 is communicated with the last-stage screw pump body 1, the carbon dioxide cools the last-stage screw pump body 1 and the vacuum pipeline 3, and the carbon monoxide in the vacuum pipeline is diluted, so that the cooling and explosion-proof effects are achieved.
From top to bottom, an object of the utility model is to provide a vacuum refining facility final stage screw pump with cooling and explosion-proof construction has following beneficial effect:
the utility model provides a vacuum refining facility final-stage screw pump with a cooling and explosion-proof structure, which is communicated with the cooling and explosion-proof structure, wherein the cooling and explosion-proof structure comprises an air input pipeline and a carbon dioxide input pipeline, and the air input pipeline can convey air to the final-stage screw pump body and the vacuum pipeline to play a cooling role; the carbon dioxide input pipeline can convey carbon dioxide gas to the final-stage screw pump body and the vacuum pipeline to play a cooling role, and simultaneously the carbon dioxide can dilute carbon monoxide in the vacuum pipeline to play an explosion-proof role;
carbon dioxide gas is sucked into the vacuum pipeline, so that the carbon dioxide gas can be effectively utilized, the emission of carbon dioxide is reduced, and the environment is improved;
the cost of the carbon dioxide gas is lower than the cost of inert gases such as nitrogen, argon and the like, and the carbon dioxide gas is used for cooling and explosion prevention, so that the smelting cost of the steel smelting vacuum refining process can be reduced, and the economic benefit of steel enterprises is improved.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.
Claims (10)
1. The utility model provides a vacuum refining facility last stage screw pump with cooling and explosion-proof structure, its characterized in that, includes the last stage screw pump body of concatenating on the vacuum line, it has cooling and explosion-proof structure still to communicate on the last stage screw pump body, cooling and explosion-proof structure include parallelly connected air input pipeline and the carbon dioxide input pipeline that sets up, the export of air input pipeline or the export of air input pipeline with last stage screw pump body intercommunication, air input pipeline can be to last stage screw pump body and vacuum line delivery air in order to cool off last stage screw pump body, carbon dioxide input pipeline can carry carbon dioxide gas to last stage screw pump body and vacuum line in order to play cooling and explosion-proof effects.
2. The final stage screw pump with cooling and explosion-proof structure for vacuum refining facility as claimed in claim 1, wherein the air input pipe is connected in series with a first flowmeter, a first thermometer and a first pressure gauge, and the air input pipe is further provided with a first switch valve for controlling on-off.
3. The final stage screw pump with cooling and explosion-proof structure for vacuum refining facility as claimed in claim 2, wherein the carbon dioxide input pipeline is connected in series with a second flowmeter, a second thermometer and a second pressure gauge, and the carbon dioxide input pipeline is further provided with a second switch valve for controlling on-off.
4. The final stage screw pump of vacuum refining plant with cooling and explosion-proof structure as claimed in claim 3, wherein the inlet of the air input line is placed in communication with the atmosphere.
5. The final stage screw pump of vacuum refining plant with cooling and explosion-proof structure as claimed in claim 3, wherein the inlet of the carbon dioxide input line is disposed in communication with a carbon dioxide gas tank.
6. The final stage screw pump of vacuum refining plant with cooling and explosion-proof structure as claimed in claim 3, wherein the inlet of the carbon dioxide input pipe is arranged in communication with the workshop pipe network.
7. The final stage screw pump with cooling and explosion-proof structure for vacuum refining facility as claimed in claim 1, wherein the carbon dioxide input pipeline is connected in series with a second flowmeter, a second thermometer and a second pressure gauge, and the carbon dioxide input pipeline is further provided with a second switch valve for controlling on-off.
8. The final stage screw pump of vacuum refining plant with cooling and explosion-proof structure as claimed in claim 7, wherein the inlet of the carbon dioxide input pipe is connected to the carbon dioxide gas tank or the workshop pipe network.
9. The final stage screw pump with cooling and explosion-proof structure for vacuum refining facility of claim 1, wherein the final stage screw pump body is provided with a first inlet, a second inlet and a first outlet, the first inlet and the first outlet are connected in series to communicate with a vacuum pipeline, and the outlet of the air input pipeline and the outlet of the carbon dioxide input pipeline can communicate with the second inlet.
10. The vacuum refining plant final stage screw pump with cooling and explosion proof structure as set forth in claim 9, wherein the vacuum line is provided with a third flow meter, a third temperature meter, a third pressure meter and a third control valve at the first inlet, and the vacuum line is provided with a fourth flow meter, a fourth temperature meter, a fourth pressure meter and a fourth control valve at the first outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022713402.XU CN213656321U (en) | 2020-11-20 | 2020-11-20 | Vacuum refining facility final-stage screw pump with cooling and explosion-proof structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022713402.XU CN213656321U (en) | 2020-11-20 | 2020-11-20 | Vacuum refining facility final-stage screw pump with cooling and explosion-proof structure |
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| Publication Number | Publication Date |
|---|---|
| CN213656321U true CN213656321U (en) | 2021-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022713402.XU Active CN213656321U (en) | 2020-11-20 | 2020-11-20 | Vacuum refining facility final-stage screw pump with cooling and explosion-proof structure |
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| Country | Link |
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| CN (1) | CN213656321U (en) |
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