CN211692541U - Special flow pump station for conveying liquid carbon dioxide - Google Patents
Special flow pump station for conveying liquid carbon dioxide Download PDFInfo
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- CN211692541U CN211692541U CN202020140424.9U CN202020140424U CN211692541U CN 211692541 U CN211692541 U CN 211692541U CN 202020140424 U CN202020140424 U CN 202020140424U CN 211692541 U CN211692541 U CN 211692541U
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Abstract
The utility model relates to a special flow pump station is carried to liquid carbon dioxide, including multiunit piston reciprocating pump, its technical essential is: each group of piston type reciprocating pumps is respectively connected with an explosion-proof variable frequency speed regulating motor, a liquid inlet pipeline component and a gas phase return pipeline component are arranged between the pump head of each group of piston type reciprocating pumps and a storage tank, a liquid outlet pipeline component is arranged between the pump head of each group of piston type reciprocating pumps and a transmission pipeline, a front cooling jacket and a rear cooling jacket which are fastened into a whole are arranged outside the pump head of each piston type reciprocating pump, the front cooling jacket and the rear cooling jacket respectively surround the front section and the rear section of the pump head, spiral cooling passages are respectively arranged in the front cooling jacket and the rear cooling jacket, the sections of the spiral cooling passages are semicircular, cooling liquid inlets of the front cooling jacket and the rear cooling jacket are connected in parallel and then connected with a cooling system outlet, and cooling liquid outlets. The utility model provides a fill that current pump station exists apart from short, easily cause the gasified problem of transmission medium, the extension is filled the distance, shortens the filling time.
Description
Technical Field
The utility model relates to a flow pump station specifically is a special flow pump station is carried to liquid carbon dioxide.
Background
At present, liquid carbon dioxide and liquid nitrogen are mainly used for fire prevention and extinguishment under a coal mine, and the liquid carbon dioxide or the liquid nitrogen in a ground storage tank is conveyed to the coal mine for split charging through a pump station and a pipeline. However, the existing pump station has the following problems: 1. the perfusion distance is short, and is generally below 500 meters; 2. because the pump station works for a long time, the liquid carbon dioxide or liquid nitrogen is easy to gasify when passing through the pump station, and the liquid phase perfusion time is long.
Disclosure of Invention
The utility model aims at providing a rational in infrastructure, use reliable liquid carbon dioxide to carry special flow pump station, solved the problem that the distance of filling that current pump station exists is short, easily cause the gasification of transmission medium, the extension is filled the distance, shortens the filling time.
The technical scheme of the utility model is that:
the utility model provides a special flow pump station is carried to liquid carbon dioxide, includes the reciprocating pump of multiunit piston, and its technical essential is: each group of piston type reciprocating pumps is respectively connected with an explosion-proof variable frequency speed regulating motor, a liquid inlet pipeline component and a gas phase return pipeline component are arranged between the pump head of each group of piston type reciprocating pumps and a storage tank for containing liquid carbon dioxide, a liquid outlet pipeline component is arranged between the pump head of each group of piston type reciprocating pumps and a conveying pipeline leading to the underground of a coal mine, a liquid inlet corresponding to the liquid inlet pipeline component is arranged at the bottom of a cold liquid buffer cavity of the pump head, a gas phase outlet corresponding to the gas phase return pipeline component is arranged at the top of the cold liquid buffer cavity, a liquid discharge outlet corresponding to the liquid outlet pipeline component is arranged at the end part of the cold liquid buffer cavity opposite to a piston, a front cooling jacket and a rear cooling jacket which are buckled into a whole are arranged outside the pump head of the piston type reciprocating pump, the front cooling jacket and the rear cooling jacket respectively surround the front section and the rear section, the center line of the spiral cooling passage coincides with the center line of the pump head, the cross section of the spiral cooling passage is semicircular, the cooling liquid inlets of the front cooling jacket and the rear cooling jacket are connected in parallel and then connected with the outlet of the cooling system, and the cooling liquid outlets of the front cooling jacket and the rear cooling jacket are connected in parallel and then connected with the inlet of the cooling system.
In the flow pump station special for conveying liquid carbon dioxide, the number of the piston type reciprocating pumps in each group is two, and the liquid inlet pipeline assembly consists of corrugated pipes I which correspond to cold liquid buffer cavities of the pump heads one by one, pipe joints I arranged at two ends of the corrugated pipes I and liquid inlet collecting pipes connected with the corrugated pipes I by the pipe joints I; the gas phase return pipeline assembly consists of corrugated pipes II which are in one-to-one correspondence with cold liquid buffer cavities of the pump heads, pipe joints II arranged at two ends of the corrugated pipes II and return air collecting pipes connected with the corrugated pipes II by the pipe joints II; the liquid outlet pipeline assembly comprises liquid outlet bent pipes which correspond to cold liquid buffer cavities of the pump heads one by one, pipe joints III arranged at two ends of the liquid outlet bent pipes, a liquid outlet collecting pipe connected with the liquid outlet bent pipes through the pipe joints III, and a pipeline damper connected with the liquid outlet collecting pipe through a pipe joint IV, wherein an outlet of the pipeline damper is connected with a conveying pipeline leading to the underground of the coal mine.
In the special flow pump station for conveying liquid carbon dioxide, the piston type reciprocating pumps of each group are connected in parallel between the storage tank and the conveying pipeline leading to the underground coal mine for alternate use, so that the piston type reciprocating pumps are prevented from being used for too long time, and the gasification of the liquid carbon dioxide is accelerated.
In the special flow pump station for conveying liquid carbon dioxide, the cooling liquid inlets of the front cooling jacket and the rear cooling jacket are positioned above the pump head in the vertical direction, and the cooling liquid outlet is positioned below the pump head.
The utility model has the advantages that:
1. liquid carbon dioxide in the storage tank is sucked into a cold liquid buffer cavity of the pump head through the reciprocating motion of the piston type reciprocating pump, and then is sent to a conveying pipeline communicated to the underground of the coal mine through the cold liquid buffer cavity. In the process, the conveying pressure requirement is met through the variable-frequency speed regulation of the explosion-proof variable-frequency speed regulation motor, the conveying distance of the liquid carbon dioxide is prolonged to be more than 1000 meters, the lift is more than 100 meters, and the problem that the filling distance of the existing pump station is short is solved. Meanwhile, due to the matching of the explosion-proof variable-frequency speed regulating motor and the piston type reciprocating pump, the conveying efficiency is obviously improved, the vaporization amount of liquid carbon dioxide in the conveying process is greatly reduced, the cold conveying is effectively controlled, and the phenomena that a pressure reduction pipeline is frozen by dry ice and the like are avoided.
2. The multiple groups of piston type reciprocating pumps are connected in parallel and used alternately, so that the phenomenon that the piston type reciprocating pumps are too long in use is avoided, and the gasification of the liquid carbon dioxide is accelerated.
3. Because the pump head outside of piston reciprocating pump is equipped with preceding, back cooling jacket as an organic whole of lock, utilizes preceding, back cooling jacket to carry out incessant cooling to the pump head, reduces the gasification volume of liquid carbon dioxide through the pump head greatly, has solved current pump station and has easily caused the gasified problem of transmission medium, and the extension is filled the distance, shortens the filling time, satisfies the fire prevention requirement.
Drawings
Fig. 1 is a block diagram of the present invention;
FIG. 2 is a schematic structural view of a set of piston reciprocating pumps of the present invention (front and rear cooling jackets are omitted);
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a cross-sectional view at the pump head;
FIG. 5 is an external schematic view of the front and rear cooling jackets.
Detailed Description
As shown in fig. 1-5, the flow pump station special for conveying liquid carbon dioxide comprises three groups of piston type reciprocating pumps 1, wherein each group of piston type reciprocating pumps 1 are connected in parallel between a storage tank 2 for containing liquid carbon dioxide and a conveying pipeline 3 leading to the underground of a coal mine for alternate use, so that the phenomenon that the piston type reciprocating pumps 1 are too long in use is avoided, and the gasification of the liquid carbon dioxide is accelerated.
Each group of piston type reciprocating pumps 1 is respectively connected with an explosion-proof variable frequency speed regulating motor 4. A liquid inlet pipeline assembly and a gas phase return pipeline assembly are arranged between the pump head 8 of each group of piston type reciprocating pumps 1 and the storage tank 2 used for containing liquid carbon dioxide, and a liquid outlet pipeline assembly is arranged between the pump head 8 of each group of piston type reciprocating pumps 1 and the conveying pipeline 3 leading to the underground of the coal mine. The bottom of the cold liquid buffer cavity of the pump head 8 is provided with a liquid inlet 803 corresponding to the liquid inlet pipeline component, the top of the cold liquid buffer cavity is provided with a gas phase outlet 801 corresponding to the gas phase return pipeline component, and the end part of the cold liquid buffer cavity opposite to the piston is provided with a liquid discharge outlet 802 corresponding to the liquid outlet pipeline component.
In this embodiment, every group the quantity of piston reciprocating pump 1 is two, the feed liquor pipeline subassembly comprises bellows I10 with pump head 8's cold liquid buffer chamber one-to-one, locates the coupling I11 at bellows I10 both ends, the feed liquor collecting pipe 16 that utilizes coupling I11 and each bellows I10 to be connected. The gas phase return pipeline assembly comprises corrugated pipes II 6 corresponding to the cold liquid buffer cavities of the pump heads 8 one by one, pipe joints II 7 arranged at two ends of each corrugated pipe II 6, and air return collecting pipes 14 connected with the corrugated pipes II 7 through the pipe joints II 7. The liquid outlet pipeline assembly consists of liquid outlet bent pipes 9 which are in one-to-one correspondence with cold liquid buffer cavities of the pump heads 8, pipe joints III 12 arranged at two ends of the liquid outlet bent pipes 9, a liquid outlet collecting pipe 15 connected with the liquid outlet bent pipes 9 through the pipe joints III 12, and a pipeline damper 5 connected with the liquid outlet collecting pipe 15 through a pipe joint IV 17, wherein an outlet of the pipeline damper 5 is connected with a conveying pipeline 3 leading to the underground coal mine.
Because the liquid inlet collecting pipe 16 is communicated with the two corrugated pipes I10, when the cold liquid storage tank is used, liquid carbon dioxide entering from the liquid inlet collecting pipe 16 is conveyed into the cold liquid buffer cavities of the corresponding pump heads 8 through the two corrugated pipes I10, entrained gas-phase carbon dioxide is converged into the gas return collecting pipe 14 through the two corrugated pipes II 6 and then returns to the storage tank 2, and the two liquid outlet bent pipes 9 lead out the liquid carbon dioxide in each corresponding pump head 8 to be converged through the liquid outlet collecting pipe 15, then the liquid carbon dioxide is discharged to the pipeline damper 5 and then conveyed to the conveying pipeline 3 leading to the underground coal mine through the pipeline damper 5.
The external of the pump head 8 of the piston type reciprocating pump 1 is provided with a front cooling jacket 18 and a rear cooling jacket 19 which are buckled into a whole, the front cooling jacket 18 and the rear cooling jacket 19 respectively surround the front section and the rear section of the pump head 8, spiral cooling passages 20 are respectively arranged in the front cooling jacket 18 and the rear cooling jacket 19, the central lines of the spiral cooling passages 20 are overlapped with the central line of the pump head 8, the sections of the spiral cooling passages 20 are semicircular, and the straight corresponding surfaces are opposite to the periphery of the pump head 8. The cooling liquid inlets 21 and 22 of the front and rear cooling jackets 18 and 19 are connected in parallel and then connected with the outlet of the cooling system, and the cooling liquid outlets 23 and 24 of the front and rear cooling jackets 18 and 19 are connected in parallel and then connected with the inlet of the cooling system. The cooling fluid inlets 21, 22 of the front and rear cooling jackets 18, 19 are located vertically above the pump head 8, and the cooling fluid outlets 23, 24 are located below the pump head 8.
In this embodiment, the corrugated pipe i 10, the corrugated pipe ii 6, and the liquid outlet bent pipe 9 all have vibration and noise reduction functions, and the pipeline damper 5 further reduces vibration and dissipates energy to ensure the stability of the transmission system. Each group of piston type reciprocating pumps 1 and the corresponding explosion-proof variable frequency speed regulating motor 4 are arranged on the same bottom plate. And a belt transmission mechanism 13 is arranged between the output end of the explosion-proof variable-frequency speed regulating motor 4 and the input end of the piston type reciprocating pump 1. The explosion-proof variable-frequency speed regulating motor 4 adopts an explosion-proof variable-frequency speed regulating three-phase asynchronous motor YBBP 200L2-6, the power is 22kW, and the rotating speed range is 508r/min-1017 r/min. The suction pressure of the piston type reciprocating pump 1 must be more than 1.38Mpa and the maximum outlet pressure is 4.0 Mpa.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.
Claims (4)
1. The utility model provides a special flow pump station is carried to liquid carbon dioxide, includes the reciprocating pump of multiunit piston, its characterized in that: each group of piston type reciprocating pumps is respectively connected with an explosion-proof variable frequency speed regulating motor, a liquid inlet pipeline component and a gas phase return pipeline component are arranged between the pump head of each group of piston type reciprocating pumps and a storage tank for containing liquid carbon dioxide, a liquid outlet pipeline component is arranged between the pump head of each group of piston type reciprocating pumps and a conveying pipeline leading to the underground of a coal mine, a liquid inlet corresponding to the liquid inlet pipeline component is arranged at the bottom of a cold liquid buffer cavity of the pump head, a gas phase outlet corresponding to the gas phase return pipeline component is arranged at the top of the cold liquid buffer cavity, a liquid discharge outlet corresponding to the liquid outlet pipeline component is arranged at the end part of the cold liquid buffer cavity opposite to a piston, a front cooling jacket and a rear cooling jacket which are buckled into a whole are arranged outside the pump head of the piston type reciprocating pump, the front cooling jacket and the rear cooling jacket respectively surround the front section and the rear section, the center line of the spiral cooling passage coincides with the center line of the pump head, the cross section of the spiral cooling passage is semicircular, the cooling liquid inlets of the front cooling jacket and the rear cooling jacket are connected in parallel and then connected with the outlet of the cooling system, and the cooling liquid outlets of the front cooling jacket and the rear cooling jacket are connected in parallel and then connected with the inlet of the cooling system.
2. The liquid carbon dioxide delivery dedicated flow pump station according to claim 1, characterized in that: the number of each group of piston type reciprocating pumps is two, and the liquid inlet pipeline assembly consists of corrugated pipes I which are in one-to-one correspondence with cold liquid buffer cavities of the pump heads, pipe joints I arranged at two ends of the corrugated pipes I and liquid inlet collecting pipes which are connected with the corrugated pipes I by the pipe joints I; the gas phase return pipeline assembly consists of corrugated pipes II which are in one-to-one correspondence with cold liquid buffer cavities of the pump heads, pipe joints II arranged at two ends of the corrugated pipes II and return air collecting pipes connected with the corrugated pipes II by the pipe joints II; the liquid outlet pipeline assembly comprises liquid outlet bent pipes which correspond to cold liquid buffer cavities of the pump heads one by one, pipe joints III arranged at two ends of the liquid outlet bent pipes, a liquid outlet collecting pipe connected with the liquid outlet bent pipes through the pipe joints III, and a pipeline damper connected with the liquid outlet collecting pipe through a pipe joint IV, wherein an outlet of the pipeline damper is connected with a conveying pipeline leading to the underground of the coal mine.
3. The liquid carbon dioxide delivery dedicated flow pump station according to claim 1, characterized in that: each group of the piston type reciprocating pumps are connected in parallel between the storage tank and a conveying pipeline leading to the underground of the coal mine.
4. The liquid carbon dioxide delivery dedicated flow pump station according to claim 1, characterized in that: the cooling liquid inlet of the front cooling jacket and the cooling liquid inlet of the rear cooling jacket are positioned above the pump head in the vertical direction, and the cooling liquid outlet is positioned below the pump head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020140424.9U CN211692541U (en) | 2020-01-22 | 2020-01-22 | Special flow pump station for conveying liquid carbon dioxide |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020140424.9U CN211692541U (en) | 2020-01-22 | 2020-01-22 | Special flow pump station for conveying liquid carbon dioxide |
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| CN211692541U true CN211692541U (en) | 2020-10-16 |
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| CN202020140424.9U Active CN211692541U (en) | 2020-01-22 | 2020-01-22 | Special flow pump station for conveying liquid carbon dioxide |
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| CN (1) | CN211692541U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3115332A1 (en) * | 2020-10-19 | 2022-04-22 | F2M | Pump comprising cooling means |
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2020
- 2020-01-22 CN CN202020140424.9U patent/CN211692541U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3115332A1 (en) * | 2020-10-19 | 2022-04-22 | F2M | Pump comprising cooling means |
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Denomination of utility model: Special flow pumping station for liquid carbon dioxide transportation Effective date of registration: 20220922 Granted publication date: 20201016 Pledgee: Shengjing Bank Co.,Ltd. Liaoyang Hongwei Sub branch Pledgor: LIAOYANG ZHENGYANG MACHINERY EQUIPMENT MANUFACTURING CO.,LTD. Registration number: Y2022210000145 |