CN114294199B - Integrated pumping station for explosive gas environment - Google Patents
Integrated pumping station for explosive gas environment Download PDFInfo
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- CN114294199B CN114294199B CN202111630373.3A CN202111630373A CN114294199B CN 114294199 B CN114294199 B CN 114294199B CN 202111630373 A CN202111630373 A CN 202111630373A CN 114294199 B CN114294199 B CN 114294199B
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Abstract
本发明公开了爆炸性气体环境下一体化泵站，包括泵房、控制柜、空压机机组和数台化工泵组，所述泵房顶面设有排气管、爆炸性气体探测器、第三温度探头和气压传感器，所述空压机机组和所述泵房通过空气管连接；所述泵房下部设有水平隔板，所述水平隔板将所述泵房分隔成设备室和均压室两个上下布置的空间，所述水平隔板设有数个均匀分布的均压孔；所述控制柜和数台化工泵组设置于所述设备室内，且固定于所述水平隔板上；所述空压机机组与所述空气管相连。本发明降低了工作环境的危险等级，将易燃易爆的环境降低为泵房内的非易燃易爆的环境；由原来成本较高的防爆电器变为成本较低的非防爆电器，同时提高了安全等级。
The present invention discloses an integrated pump station in an explosive gas environment, including a pump room, a control cabinet, an air compressor unit and several chemical pump units. The top surface of the pump room is provided with an exhaust pipe, an explosive gas detector, a third temperature probe and an air pressure sensor. The air compressor unit and the pump room are connected by an air pipe; a horizontal partition is provided at the lower part of the pump room, and the horizontal partition divides the pump room into two spaces arranged up and down, namely, an equipment room and a pressure equalizing room. The horizontal partition is provided with several evenly distributed pressure equalizing holes; the control cabinet and several chemical pump units are arranged in the equipment room and fixed on the horizontal partition; the air compressor unit is connected to the air pipe. The present invention reduces the danger level of the working environment, reduces the inflammable and explosive environment to a non-inflammable and explosive environment in the pump room; changes the original high-cost explosion-proof electrical appliances into low-cost non-explosion-proof electrical appliances, and improves the safety level at the same time.
Description
Technical Field
The invention relates to an integrated pump station, in particular to an integrated pump station in an explosive gas environment.
Background
Petrochemical pumps are important equipment in the industries of oil refining, petrochemical industry and the like, and any process fluid flows are not separated from the petrochemical pumps. In industries such as oil refining and petrochemical industry, petrochemical pumps work in flammable and explosive gas environments, and flammable and explosive gases such as hydrogen, methane, acetylene, ethane, ethylene, propylene and the like are often distributed in air environments. Under the explosive gas environment, electrical equipment such as a motor, a control cabinet and the like of the petrochemical pump are required to be explosion-proof electrical appliances, for example, the motor is an explosion-proof motor or an safety-increasing motor.
However, the explosion-proof motor or the safety-increasing motor matched with the existing petrochemical pump has a plurality of defects, on one hand, hundreds of petrochemical pumps can work simultaneously under the same explosive gas environment, if one petrochemical pump is matched with the explosion-proof motor to explode due to faults, the explosion-proof motor possibly causes disastrous accidents of the whole explosive area and causes immeasurable loss, on the other hand, the initial cost and the operation cost of the explosion-proof motor and the explosion-proof control cabinet are higher, meanwhile, the reliability is lower, and only one safety protection measure is provided. The explosion-proof electrical appliance is required to be subjected to explosion-proof authentication, the brand new design and the retrofit design are required to be subjected to pattern inspection and authentication, the requirements on the processing precision of equipment are high, and the initial cost of the explosion-proof electrical appliance is high. In addition, the operation cost of explosion-proof electrical appliances such as explosion-proof motor is higher, for example, the explosion-proof motor is used for a long time for the explosion-proof joint face receives wearing and tearing, and the explosion-proof performance reduces, returns the cost of factory maintenance higher, and simultaneously probably influences the normal work of chemical industry flow. Explosion-proof electrical appliances such as explosion-proof motors and the like have only one safety protection measure, and if the explosion-proof electrical appliances fail, immeasurable losses can be caused. Finally, the safety and reliability of the explosion-proof control cabinet are also low.
In a word, the cost of the explosion-proof electric appliance matched with the existing petrochemical pump is higher, the reliability is lower, and the safety is poorer.
Disclosure of Invention
In order to solve the problems, the invention provides an integrated pump station in an explosive gas environment, which can well solve the defects of high cost, low reliability, poor safety and the like of an explosion-proof electric appliance in the prior art.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The integrated pump station in the explosive gas environment comprises a pump room, a control cabinet, an air compressor unit and a plurality of chemical pump sets, wherein an exhaust pipe, an explosive gas detector, a third temperature probe and a gas pressure sensor are arranged on the top surface of the pump room, the air compressor unit and the pump room are connected through an air pipe, the pump room is of a fully-sealed structure and is made of light materials, a sealing door and a transparent window are arranged on the side surface of the pump room, a horizontal partition plate is arranged at the lower part of the pump room, the pump room is divided into two spaces which are arranged up and down, the equipment room and the pressure equalizing room by the horizontal partition plate, a plurality of pressure equalizing holes which are uniformly distributed are formed in the horizontal partition plate, the equipment room and the pressure equalizing room are communicated, the control cabinet and the chemical pump sets are arranged in the equipment room and are fixed on the horizontal partition plate, the chemical pump sets comprise a pump head and a motor, a second temperature probe is arranged at a bearing position of the pump head, a first temperature probe is arranged at a bearing position of the motor, the air compressor unit comprises an air compressor, an air filter and a variable frequency motor, the air filter is connected with an air inlet, and the variable frequency motor is used for driving the air compressor;
The control cabinet comprises a programmable controller, a frequency converter and a plurality of alternating current contactors, wherein the programmable controller is a controller of the integrated pump station, the frequency converter is a driver of the variable frequency motor, the first temperature probe, the second temperature probe, the third temperature probe, the explosive gas detector and the air pressure sensor are all connected with the programmable controller through signal lines, the control end of the frequency converter is connected with the programmable controller, the power output cable of the frequency converter is connected with the variable frequency motor, the control end of the alternating current contactor is connected with the programmable controller, and the power output cable of the alternating current contactor is connected with the motor.
The control cabinet, the motor, the variable frequency motor, the explosive gas detector, the first temperature probe, the second temperature probe, the third temperature probe and the air pressure sensor are non-explosion-proof electrical appliances.
The pump room is in an explosive gas environment, and the air compressor unit is in a non-explosive gas environment.
As a further development of the invention, the air pressure in the pump room is slightly higher than the air pressure outside the pump room.
As a further improvement of the invention, the sealing door and the transparent window are completely sealed with the pump house under the condition that the integrated pump station works normally.
As a further improvement of the invention, the exhaust pipe comprises a rain cap and a hollow pipe, and the hollow pipe is provided with a one-way valve which only allows gas to flow from inside the pump room to outside the pump room.
As a further improvement of the invention, the bottom surface and the top surface of the cabinet body of the control cabinet are respectively provided with an air inlet hole and an air outlet hole.
Compared with the prior art, the invention has the beneficial effects that:
1. The dangerous level of the working environment is reduced, namely the inflammable and explosive environment of the original equipment is reduced to the non-inflammable and explosive environment in the pump room.
2. The equipment cost is reduced, namely the original explosion-proof electrical appliance with higher cost is replaced by the non-explosion-proof electrical appliance with lower cost.
3. The safety level is improved, namely, a plurality of measures are adopted to early warn danger or improve the safety level.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate and together with the embodiments of the invention and do not constitute a limitation to the invention, and in which:
fig. 1 is a schematic diagram of the principles of the present invention.
Fig. 2 is a partial enlarged view at I of fig. 1.
Fig. 3 is a schematic diagram of a control cabinet according to the present invention.
Fig. 4 is a plan view of the air compressor assembly of the present invention.
In the figure, 1, a pump room, 2, a chemical pump set, 3, a control cabinet, 4, an air compressor unit, 5, an exhaust pipe, 6, an explosive gas detector, 7, a first temperature probe, 8, a second temperature probe, 9, a third temperature probe, 10, an air pressure sensor, 11, a sealing door, 12, a transparent window, 13, a pressure equalizing chamber, 14, an equipment chamber, 15, a horizontal partition plate, 16, a pressure equalizing hole, 21, a pump head, 22, a motor, 31, a programmable controller, 32, a frequency converter, 33, an alternating current contactor, 41, an air compressor, 42, an air filter, 43, a variable frequency motor, 44, an air pipe, 51, a rain hat, 52 and a hollow pipe are shown.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, unless explicitly specified and limited otherwise, the terms "mounted," configured to, "" connected, "and the like are to be construed broadly, and include, for example," connected "as well as" fixedly connected "as well as removably connected or integrally connected," mechanically connected "as well as electrically connected," mechanically connected "as well as directly connected" or indirectly connected via an intermediate medium, and communicating between the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 4, the invention provides an integrated pump station in an explosive gas environment, which comprises a pump room 1, a control cabinet 3, an air compressor unit 4 and a digital chemical pump unit 2, wherein the top surface of the pump room 1 is provided with an exhaust pipe 5, an explosive gas detector 6, a third temperature probe 9 and a gas pressure sensor 10, and the air compressor unit 4 is connected with the pump room 1 through an air pipe 44. The pump room 1 adopts a full-sealing structure and is made of light materials, and a sealing door 11 and a transparent window 12 are arranged on the side face of the pump room 1. The sealing door 11 and the transparent window 12 are completely sealed with the pump room 1 under the condition that the integrated pump station works normally. The pump room 1 of full seal structure can separate the inside and outside of pump room 1 completely and form two space environment, and sealing door 11 can guarantee to ensure the tight seal of pump room 1 when closing, and transparent window 12 can guarantee to observe the inside condition of pump room 1 from the outside under sealed condition, can have certain daylighting simultaneously. The lower part of the pump room 1 is provided with a horizontal partition plate 15, the horizontal partition plate 15 divides the pump room 1 into two spaces which are arranged up and down, namely an equipment room 14 and a pressure equalizing room 13, the horizontal partition plate 15 is provided with a plurality of pressure equalizing holes 16 which are uniformly distributed, the pressure equalizing holes 16 are used for communicating the equipment room 14 with the pressure equalizing room 13, and the pressure equalizing holes 16 can uniformly enable compressed air in the pressure equalizing room 13 to flow into the equipment room 14. The control cabinet 3 and the chemical pump set 2 are arranged in the equipment room 14 and are fixed on the horizontal partition plate 15. The chemical pump set 2 comprises a pump head 21 and a motor 22, wherein a second temperature probe 8 is arranged at a bearing position of the pump head 21, a first temperature probe 7 is arranged at a bearing position of the motor 22, and if necessary, a temperature measuring probe can be arranged on a motor winding and an iron core, and the temperature measuring probe comprising the first temperature probe 7 and the second temperature probe 8 can monitor the highest temperature of related parts. The air compressor unit 4 comprises an air compressor 41, an air filter 42 and a variable frequency motor 43, wherein the air filter 42 is connected with an inlet of the air compressor 41, the variable frequency motor 43 is used for driving the air compressor 41, and an outlet of the air compressor 41 is connected with an air pipe 44. The air compressor unit 4 is a power source for generating compressed air, and the variable frequency motor 43 can change the rotation speed of the air compressor 41 so as to adjust the output flow rate and pressure.
The control cabinet 3 comprises a programmable controller 31, a frequency converter 32 and a plurality of alternating current contactors 33, wherein the programmable controller 31 is a controller of an integrated pump station, and the frequency converter 32 is a driver of a variable frequency motor 43. The first temperature probe 7, the second temperature probe 8, the third temperature probe 9, the explosive gas detector 6 and the air pressure sensor 10 are all connected with the programmable controller 31 through signal lines, the control end of the frequency converter 32 is connected with the programmable controller 31, the power output cable of the frequency converter 32 is connected with the variable frequency motor 43, the control end of the alternating current contactor 33 is connected with the programmable controller 31, and the power output cable of the alternating current contactor 33 is connected with the motor 22. The programmable controller 31 can process signals received from the first temperature probe 7, the second temperature probe 8, the third temperature probe 9, the explosive gas detector 6 and the air pressure sensor 10, and through judging the signals, respond correspondingly according to different signal values, such as giving an alarm, adjusting the rotating speed of the variable frequency motor 43 or shutting down the motor 22. The programmable controller 31 controls the ac contactor 33 to start and stop the motor 22, and sends a command to the inverter 32 to change the output frequency of the inverter 32, thereby adjusting the rotation speed of the inverter motor 43.
The control cabinet 3, the motor 22, the variable frequency motor 43, the explosive gas detector 6, the first temperature probe 7, the second temperature probe 8, the third temperature probe 9 and the air pressure sensor 10 are all non-explosion-proof electrical appliances. The explosion-proof electrical apparatus (explosion-proof motor, explosion-proof control cabinet, etc.) of the prior art adopts complicated technology, and 3C authentication and explosion-proof authentication are needed, so the cost is higher, compared with the explosion-proof electrical apparatus of the prior art, the embodiment adopts non-explosion-proof electrical apparatus, thereby not only reducing the technical difficulty and cost of equipment, but also improving the reliability and safety of the equipment.
The air pressure in the pump room 1 is slightly higher than the air pressure outside the pump room 1, so that the air containing explosive gas outside the pump room 1 can be ensured not to enter the pump room 1 in a countercurrent way, and a non-explosive gas environment is formed in the pump room 1. Although the outside of the pump room 1 is an explosive gas environment and the air compressor unit 4 is in a non-explosive gas environment, it is possible to ensure that the air inputted into the pump room 1 through the air compressor unit 4 is a non-explosive gas.
The exhaust pipe 5 includes a rain cap 51 and a hollow pipe 52. The hollow tube 52 is provided with a one-way valve which only allows the gas to flow from inside the pump house 1 to outside the pump house 1, thereby further ensuring that the air containing explosive gas outside the pump house 1 does not flow back into the pump house 1.
The bottom surface and the top surface of the cabinet body of the control cabinet 3 are respectively provided with an air inlet hole and an air outlet hole, so that air in the control cabinet 3 can be continuously replaced.
The working principle of the embodiment is as follows:
The air compressor unit 4 in the non-explosive gas environment is a pressurizing device for pure air, the pure air enters the air compressor 41 for pressurizing after being filtered by the air filter 42, and the compressed air enters the pressure equalizing chamber 13 at the lower part of the pump room 1 through the air pipe 44. The compressed air then flows into the equipment room 14 uniformly through the plurality of pressure equalizing holes 16, the air mixed with part of inflammable and explosive gas is replaced, and the original gas is discharged outside the pump room 1 through the exhaust pipe 5, so that the equipment room 14 is changed from an explosive gas environment to a non-explosive gas environment, and the control cabinet 3 and the chemical pump unit 2 arranged in the equipment room 14 can adopt non-explosion equipment, so that the equipment cost is greatly reduced. The explosive gas detector 6 is used for monitoring whether the gas in the pump room 1 contains explosive gas with a certain concentration, if the chemical pump group 2 for conveying inflammable and explosive media leaks, the explosive gas is mixed in the gas in the equipment room 14, and the explosive gas detector 6 can transmit the detected concentration value to the programmable controller 31 in the control cabinet 3. The programmable controller 31 sends a command to the frequency converter 32 to increase the output frequency of the frequency converter 32, so as to increase the rotation speed of the variable frequency motor 43, and finally, the air compressor unit 4 increases the flow and pressure of the compressed air. In this way, the gas within the equipment room 14 is quickly displaced, ensuring a non-explosive atmosphere within the equipment room 14 in case of a deflagration event. The first temperature probe 7 and the second temperature probe 8 are used for monitoring the temperature of the surface of the equipment, if the temperature is abnormal and overtemperature exists, signals can be transmitted to the programmable controller 31, and the programmable controller 31 can control the alarm to give an alarm or shut down related equipment for maintenance. The first temperature probe 7 is used to monitor the overall temperature of the gas in the equipment room 14, and on the other hand, to ensure the safety of the equipment in the pump room 1. When a worker opens the sealing door 11 and enters the pump room 1, gas in the pump room 1 rapidly overflows from the inside to the outside of the pump room 1, the pressure of the gas in the pump room 1 is reduced, the gas pressure sensor 10 arranged at the top of the pump room 1 changes the gas pressure value at the moment to the programmable controller 31, the programmable controller 31 sends an instruction to the frequency converter 32 to improve the output frequency of the frequency converter 32, so that the rotating speed of the frequency converter motor 43 is improved, and finally the air compressor unit 4 increases the flow and the pressure of compressed air to balance the reduction of the gas pressure in the pump room 1 until the gas pressure reaches the original set value. Therefore, a plurality of measures ensure the safety of the integrated pump station.
Compared with the existing explosion-proof electric appliance (explosion-proof motor, explosion-proof control cabinet and the like) technology, the technical scheme of the application has the advantages that the explosive gas environment is transformed into the non-explosive gas environment, the electric equipment such as the control cabinet and the motor in the pump room is common equipment (non-explosion-proof equipment), explosion-proof authentication is not needed, and the technical scheme of the existing explosion-proof electric appliance (explosion-proof motor, explosion-proof control cabinet and the like) has the advantages that the equipment is transformed so as to improve the explosion-proof performance, and 3C authentication and explosion-proof authentication are needed.
Compared with the explosion-proof equipment working in an explosive gas environment in the prior art, the integrated pump station in the explosive gas environment has the remarkable advantages that:
The method reduces the dangerous level of the working environment, reduces the inflammable and explosive environment of the original equipment to the non-inflammable and explosive environment in the pump room 1, reduces the equipment cost, changes the original explosion-proof electrical appliance with higher cost into the non-explosion-proof electrical appliance with lower cost, improves the safety level, and adopts a plurality of measures to early warn the danger or improve the safety level.
It should be noted that the above embodiments are merely for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the above embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present invention.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111630373.3A CN114294199B (en) | 2021-12-28 | 2021-12-28 | Integrated pumping station for explosive gas environment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111630373.3A CN114294199B (en) | 2021-12-28 | 2021-12-28 | Integrated pumping station for explosive gas environment |
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| CN114294199A CN114294199A (en) | 2022-04-08 |
| CN114294199B true CN114294199B (en) | 2025-03-07 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105376997A (en) * | 2015-11-18 | 2016-03-02 | 南阳市中通防爆电机电器有限公司 | Positive-pressure explosion-proof control cabinet and control method thereof |
| CN111642118A (en) * | 2020-07-02 | 2020-09-08 | 浙江全世科技有限公司 | Positive-pressure explosion-proof control cabinet and control method thereof |
| CN216447072U (en) * | 2021-12-28 | 2022-05-06 | 潘世群 | Integrated pump station under explosive gas atmosphere |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH074792B2 (en) * | 1989-10-06 | 1995-01-25 | 株式会社神戸製鋼所 | Internal pressure explosion-proof system |
| DE10341425A1 (en) * | 2003-09-09 | 2005-03-31 | Bosch Rexroth Ag | Hydraulic unit with a reservoir for hydraulic fluid and with a motor-pump unit |
| CN201928552U (en) * | 2010-12-30 | 2011-08-10 | 中国中化股份有限公司 | Positive pressure type anti-explosion cabinet |
| CN103648249B (en) * | 2013-12-19 | 2016-03-02 | 王轶丹 | Electrical equipment is breathed explosion-proof method and is breathed anti-explosion cabinet |
| CN112260078A (en) * | 2020-09-28 | 2021-01-22 | 陈晓萍 | Explosion-proof malleation switch board |
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2021
- 2021-12-28 CN CN202111630373.3A patent/CN114294199B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105376997A (en) * | 2015-11-18 | 2016-03-02 | 南阳市中通防爆电机电器有限公司 | Positive-pressure explosion-proof control cabinet and control method thereof |
| CN111642118A (en) * | 2020-07-02 | 2020-09-08 | 浙江全世科技有限公司 | Positive-pressure explosion-proof control cabinet and control method thereof |
| CN216447072U (en) * | 2021-12-28 | 2022-05-06 | 潘世群 | Integrated pump station under explosive gas atmosphere |
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