CN216202547U - Conveying device for low-temperature liquid - Google Patents
Conveying device for low-temperature liquid Download PDFInfo
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- CN216202547U CN216202547U CN202122571123.9U CN202122571123U CN216202547U CN 216202547 U CN216202547 U CN 216202547U CN 202122571123 U CN202122571123 U CN 202122571123U CN 216202547 U CN216202547 U CN 216202547U
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Abstract
The utility model provides a conveying device for low-temperature liquid, which comprises a pump, a supercharger and a first energy-saving device, wherein the pump comprises a pump inlet and a pump outlet, and the first energy-saving device is communicated with the pump inlet. Through setting up economizer and pump entry intercommunication, realize that pump entry pipeline pressure loss reduces, the flow increase, BOG reduces in the transportation process.
Description
Technical Field
The utility model belongs to the technical field of energy utilization, and particularly relates to a conveying device for low-temperature liquid.
Background
Cryogenic liquids such as Liquefied Natural Gas (LNG) or liquid nitrogen are one of important energy sources in energy supply in China, and the transportation of cryogenic liquids is one of essential links for realizing energy production and consumption. Currently, pressure differential delivery and pumped pressurization delivery are commonly used for cryogenic liquids.
In the differential pressure conveying link, because the low-temperature liquid often has the physical characteristic of easy gasification, pressure and differential pressure are easy to cause instability, so that the conveying speed is influenced, the existing experience shows that the time required for conveying the liquid of a 50-cubic tank car is about 3-4 hours, and the key for improving the conveying efficiency is how to stabilize the differential pressure in the differential pressure conveying.
In the pump pressurizing and conveying link, since tank cars for low-temperature industries are standard products at home and abroad, the inlet and the outlet of the tank cars are fixed in size, and the highest flow speed during unloading is limited. Therefore, the method solves the contradiction between the standard size of the tank car and the improvement of the unloading speed, and is another key problem for improving the unloading speed of the low-temperature liquid.
During pump pressure boost is carried, in the pump operation process, the pressure of tank wagon can reduce along with the transport of liquid, if tank wagon pressure boost control is difficult to compress for the time of unloading to cause the waste of liquid this moment, consequently, what mode of taking can carry out effective pressure boost to tank wagon in the pump operation also can reduce the waste of liquid and also solve the key that low temperature liquid carried.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to a cryogenic liquid transfer apparatus that overcomes the above-described deficiencies of the prior art. According to the utility model, the first energy-saving device is arranged between the pump and the transport container filled with the low-temperature liquid and is communicated with the pump inlet, so that the pressure loss is reduced, the flow of the fluid entering the pump is increased, the BOG is reduced at the same time, and the purpose of high-speed and energy-saving conveying is achieved.
In order to solve the technical problems, the utility model adopts the technical scheme that: the conveying device for the cryogenic liquid comprises a pump and a supercharger, wherein the pump comprises a pump inlet and a pump outlet, and the conveying device is characterized by further comprising a first energy-saving device, and the first energy-saving device is communicated with the pump inlet.
The conveying device for the low-temperature liquid is characterized in that the pump outlet comprises a first pump outlet and a second pump outlet, the conveying device for the low-temperature liquid further comprises a first pipeline, one end of the first pipeline is communicated with the second pump outlet, and the other end of the first pipeline is communicated with the inlet of the supercharger.
The conveying device for the cryogenic liquid is characterized in that a valve is arranged on the first pipeline.
The conveying device for the cryogenic liquid is characterized in that the valve is a pressure control valve.
The conveying device for the low-temperature liquid is characterized in that the first energy-saving device is in a shape of a pipe body, a tank body or a cylinder body.
The conveying device for cryogenic liquid is characterized by further comprising a second pipeline, wherein the second pipeline is connected to the first pipeline.
In the above-described transfer device for a cryogenic liquid, the connection point of the second line to the first line is located between the second outlet of the pump and the valve.
The conveying device for the cryogenic liquid is characterized by further comprising a second energy-saving device, wherein the second energy-saving device is communicated with the first pipeline and the first outlet of the pump.
The conveying device for the low-temperature liquid is characterized in that the second energy-saving device is in a shape of a pipe body, a tank body or a cylinder body.
Compared with the prior art, the utility model has the following advantages:
1. the utility model provides a conveying device for low-temperature liquid, which creatively adopts an energy-saving device after a standard size of a tank car is equally extended to a device for unloading the low-temperature liquid, so that the pressure loss from the tank car to a pump inlet is reduced, the flow of the tank car entering the pump inlet is improved, and the unloading efficiency is greatly improved. Compared with the prior unloading technology, the unloading time is shortened by 30 percent.
2. The utility model provides a conveying device for low-temperature liquid, which adopts an energy-saving device, so that the pressure loss from a transport container filled with the low-temperature liquid to a pump inlet is reduced, the generation of BOG is reduced, and the control of a pump is simpler.
3. Preferably, the first energy-saving device is a vertical first energy-saving device in the shape of a pipe body, compared with the prior art, the first energy-saving device has the defects that cavitation is easy to generate, and the operation and the service life of the pump are influenced.
4. Preferably, the first economizer is a vertical first economizer in the shape of a pipe body, and has a buffering function.
5. Preferably, the utility model also comprises a first pipeline connected with the second outlet of the pump, and the second outlet of the pump is creatively utilized to fully utilize the heat of the cooled fluid, thereby improving the unloading efficiency and saving energy.
5. Preferably, the utility model also comprises a valve arranged on the first pipeline, and the valve is automatically adjusted by utilizing the change of the fluid pressure, so that the influence on the cooling process of the pump can be effectively avoided.
6. Preferably, the utility model further comprises a second energy-saving device communicated with both the supercharger and the first outlet of the pump, and the second energy-saving device is more preferably a vertical second energy-saving device in the shape of a pipe body, so that the influence of the low-temperature fluid easy to gasify on fluid delivery can be effectively avoided.
The technical solution of the present invention is further described in detail with reference to the accompanying drawings and embodiments.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
Fig. 3 is a schematic structural diagram of embodiment 3 of the present invention.
Fig. 4 is a schematic structural diagram of embodiment 4 of the present invention.
Fig. 5 is a schematic structural diagram of embodiment 5 of the present invention.
Fig. 6 is a schematic structural diagram of embodiment 6 of the present invention.
Fig. 7 is a schematic structural diagram of embodiment 7 of the present invention.
Fig. 8 is a schematic structural diagram of embodiment 8 of the present invention.
Fig. 9 is a schematic structural diagram of embodiment 9 of the present invention.
Fig. 10 is a schematic structural diagram of embodiment 10 of the present invention.
Fig. 11 is a schematic structural diagram of embodiment 11 of the present invention.
Fig. 12 is a schematic structural diagram of embodiment 12 of the present invention.
Fig. 13 is a schematic structural diagram of embodiment 13 of the present invention.
Fig. 14 is a schematic structural diagram of embodiment 14 of the present invention.
Description of the reference numerals
1-a pump; 11-pump inlet; 12-a first outlet of the pump;
13-a second outlet of the pump; 131 — a first pipeline;
2, a supercharger; 21-a supercharger inlet; 22-supercharger outlet;
3-a valve; 4-a first interface; 5-a second interface;
6-third interface; 7-a second energy saving device; 71-a third line;
8-a first energy saving device; 81-a second line; 9-a first pipeline;
31 — a fourth interface; 32-second line.
Detailed Description
Example 1
As shown in fig. 1, the present embodiment provides a conveying apparatus for cryogenic liquid, including a pump 1 and a pressure booster 2, where the pump 1 includes a pump inlet 11 and a pump outlet, and further includes a first energy saving device 8, and the first energy saving device 8 is communicated with the pump inlet 11. The first energy saving means 8 comprises a chamber which can be used to contain a fluid.
The low-temperature liquid can be liquid nitrogen or liquefied natural gas, and can also be other low-temperature fluids needing to be transmitted or conveyed. The pump is a canned pump commonly used in the art and has a structure including a pump inlet 11 and a pump outlet forming a passage therein, and the supercharger 2 is a supercharger commonly used in the art and includes a supercharger inlet 21 and a supercharger outlet 22 communicated with each other.
The cryogenic liquid transfer process is generally a process of transferring the cryogenic liquid in a transport vessel, typically a tanker, containing the cryogenic liquid, into a storage device, typically a storage tank, using a pump and a booster. Referring to fig. 1, the conveying process can be set as that the pump inlet 11 is communicated with the tank wagon, the pump outlet is communicated with the storage tank, a transmission pipeline capable of transmitting part of fluid in the pipeline to the supercharger 2 is connected to a pipeline communicated with the storage tank at the pump outlet, a first pipeline 9 is connected between the supercharger outlet 22 and the tank wagon, and the fluid at the supercharger outlet 22 is transmitted to the tank wagon for supercharging through the first pipeline 9. Referring to fig. 1, a second pipeline 32 connected to the first pipeline 9 may be further included, and an end of the second pipeline 32, which is far from the first pipeline 9, is communicated with the storage tank gas port.
In this embodiment, a first energy saving device 8 is additionally arranged before the pump inlet 11, and the first energy saving device 8 has a cavity capable of accommodating fluid, so that the flow rate of the fluid entering the pump inlet 11 is increased. Referring to the delivery method of fig. 1, the first economizer 8 collects fluid flowing out of the tank car, delivers the collected fluid to the pump inlet 11, and achieves an increase in the flow rate of the pump inlet 11 by reducing the pressure loss between the pump inlet 11 and the tank car.
Wherein, the mode of communicating with the tank wagon can be directly connected, connected through a hose or connected through a crane pipe. One way of communicating with a tank car with a gas phase port, a pressurization port, and a liquid phase port, as exemplified with reference to fig. 1, can be implemented, but is not limited to, the way of communicating as described with reference to fig. 1. The communication mode includes: the first interface 4 is arranged at one end of the first pipeline 9 far away from the booster outlet 22, so that the first interface 4 is directly connected to a tank car gas phase port, or is connected with the tank car gas phase port through a hose or a crane pipe, the tank car pressurization port is communicated with the first energy-saving device 8 through a pipeline with the second interface 5, the second interface 5 is directly connected to the tank car pressurization port, or is connected with the tank car pressurization port through a hose or a crane pipe, the pump inlet 11 is connected with the tank car liquid phase port through a pipeline with the third interface 6, and the third interface 6 is directly connected to the tank car liquid phase port, or is connected with the tank car liquid phase port through a hose or a crane pipe.
The shape of the first energy-saving device 8 can be a pipe body, a tank body or a cylinder body and the like.
Example 2
As shown in fig. 2, in the cryogenic liquid transfer device of this embodiment, compared to embodiment 1, the first economizer 8 is shaped like a pipe, the center line of the pipe is perpendicular to the ground, so as to form a vertical pipe, and the height of the end of the vertical pipe away from the ground is higher than the height of the second port 5 from the ground, and is higher than the height of the third port 6 from the ground. The fluid vertical flow in the first economizer 8 of tubulose, bubble production volume reduces, can effectively avoid low temperature liquid gasification, reduces the BOG and produces.
Example 3
As shown in fig. 3, the conveying apparatus for cryogenic liquid of this embodiment includes a pump 1 and a pressure booster 2, where the pump 1 includes a pump inlet 11, a pump first outlet 12, a pump second outlet 13, a first economizer 8, and a first pipeline 131, where the first economizer 8 is communicated with the pump inlet 11, one end of the first pipeline 131 is communicated with the pump second outlet 13, and the other end of the first pipeline 131 is communicated with the pressure booster inlet 21.
The pump is a shielding pump commonly used in the field, and the structure of the pump comprises a pump inlet 11 and a pump outlet, and the pump outlet comprises a pump first outlet 12 and a pump second outlet 13. The delivery process may be set such that the pump inlet 11 communicates with the tank car and the pump first outlet 12 communicates with the tank. The remaining transfer process was substantially the same as in example 1.
In the present embodiment, the first pipeline 131 which is communicated with both the pump second outlet 13 and the supercharger inlet 21 is arranged between the pump second outlet 13 and the supercharger inlet 21, so that compared with the embodiment 1 in which the fluid in the pipeline communicated with the storage tank from the pump first outlet 12 is transmitted to the supercharger 2, the present embodiment makes full use of the pump second outlet 13, and effectively realizes full use of the heat of the fluid.
Further, a valve 3 is disposed on the first pipeline 131 in this embodiment. The valve 3 is used to cut off and connect the first pipeline 131, for example, the valve 3 may be a pressure control valve that is automatically opened and closed by the fluid pressure difference in the pipeline, such as a self-operated pressure regulating valve.
The shape of the first energy-saving device 8 can be a pipe body, a tank body or a cylinder body and the like.
Example 4
As shown in fig. 4, the cryogenic liquid transfer device of the present embodiment further includes a second line 81 connected to the first line 131, compared to embodiment 3. The end of the second line 81 remote from the first line 131 is connected to the first economizer 8 (as shown by the dashed line in fig. 4) or to the first pipe 9 (as shown by the two-dot chain line in fig. 4).
In this embodiment, the connection point of the second line 81 to the first line 131 is located between the second outlet 13 of the pump and the valve 3.
Example 5
As shown in fig. 5, the cryogenic liquid transfer device of the present embodiment further includes a first line 131, as compared to embodiment 2, the first line 131 is as described in embodiment 3, that is, the first line 131 is connected to the pump second outlet 13, and one end of the first line 131, which is away from the pump second outlet 13, is communicated with the booster inlet 21, so as to communicate the pump 1 and the booster 2.
Example 6
As shown in fig. 6, the cryogenic liquid transfer device of the present embodiment further includes a second pipeline 81, as compared to embodiment 5, and the second pipeline 81 is as described in embodiment 4, that is, an end of the second pipeline 81 remote from the first pipeline 131 is connected to the first economizer 8 or the first pipeline 9.
In this embodiment, the connection point of the second line 81 to the first line 131 is located between the second outlet 13 of the pump and the valve 3.
Examples 7 to 10 exemplify a conveying apparatus for cryogenic liquid provided with a second economizer for communicating the first line 131 with the pump first outlet 12, as follows.
Example 7
As shown in fig. 7, the cryogenic liquid transfer apparatus of the present embodiment further includes a second economizer 7, as compared to embodiment 3, and the second economizer 7 communicates with both the first line 131 and the first pump outlet 12. The second energy-saving device 7 comprises a cavity for containing fluid, and the cavity is provided with a fluid inlet and a fluid outlet.
The second economizer 7 can function to buffer and divert fluid exiting the pump first outlet 12, for example, fluid exiting the first outlet 12 is collected in a cavity of the economizer 7, and a portion of the fluid enters the supercharger 2 through a fluid outlet.
The shape of the second energy-saving device 7 can be a pipe body, a tank body or a cylinder body and the like.
Referring to the second economizer 7 illustrated in fig. 7, the structure of the second economizer 7 can be implemented but is not limited to the structure shown in fig. 7, the fluid outlet comprises a first fluid outlet and a second fluid outlet, the fluid inlet is communicated with the pump first outlet 12, the first fluid outlet is communicated with the supercharger inlet 21 through a third line 71, and the second fluid outlet is communicated with the storage tank through a line with a fourth port 31.
Example 8
As shown in fig. 8, the cryogenic liquid transfer apparatus of the present embodiment further includes a second economizer 7, as compared to embodiment 4, and the second economizer 7 is as described in embodiment 7, that is, the second economizer 7 communicates with both the first line 131 and the pump first outlet 12.
The shape of the second energy-saving device 7 can be a pipe body, a tank body or a cylinder body and the like.
Example 9
As shown in fig. 9, the cryogenic liquid transfer apparatus of the present embodiment further includes a second economizer 7, as compared to embodiment 5, and the second economizer 7 is as described in embodiment 7, that is, the second economizer 7 communicates with both the first line 131 and the pump first outlet 12.
The shape of the second energy-saving device 7 can be a pipe body, a tank body or a cylinder body and the like.
Example 10
As shown in fig. 10, the cryogenic liquid transfer apparatus of the present embodiment further includes a second economizer 7, as compared to embodiment 6, and the second economizer 7 is as described in embodiment 7, that is, the second economizer 7 communicates with both the first line 131 and the pump first outlet 12.
The shape of the second energy-saving device 7 can be a pipe body, a tank body or a cylinder body and the like.
Embodiments 11 to 14 exemplify that the second economizer 7 is a conveying device for cryogenic liquid of a vertical second economizer, and the fluid flowing out from the first outlet 12 of the pump may be collected in the second economizer 7, and then split, and the fluid flows vertically so that the gas phase in the fluid preferentially enters the supercharger, thereby reducing the loss of the liquid phase, as follows.
Example 11
As shown in fig. 11, the cryogenic liquid transfer device of the present embodiment further includes a second economizer 7, in comparison with embodiment 3, the second economizer 7 is shaped like a pipe, a center line of the second economizer 7 shaped like a pipe is perpendicular to the ground, and an end of the second economizer 7 shaped like a pipe, which is far from the ground, extends upward. The second energy-saving device 7 comprises a cavity for containing fluid, and the cavity is provided with a fluid inlet and a fluid outlet.
The second economizer 7 can function to buffer and divert fluid exiting the pump first outlet 12, for example, fluid exiting the first outlet 12 is collected in a cavity of the economizer 7, and a portion of the fluid enters the supercharger 2 through a fluid outlet.
Referring to the second economizer 7 illustrated in fig. 11, which is tubular in shape, the structure of the second economizer 7 can be implemented but is not limited to the structure shown in fig. 11, and the fluid outlets include a first fluid outlet and a second fluid outlet, wherein the first fluid outlet is disposed on the upper side of the second economizer 7, the fluid inlet and the second fluid outlet are respectively disposed on the lower side of the second economizer 7, the fluid inlet is communicated with the pump first outlet 12, the first fluid outlet is communicated with the supercharger inlet 21 through a third line 71, and the second fluid outlet is communicated with the storage tank through a line with a fourth port 31.
Example 12
As shown in fig. 12, the cryogenic liquid transfer apparatus of the present example further includes a second economizer 7 having a tubular shape, as compared to example 4, and the second economizer 7 having a tubular shape is the same as in example 11.
Example 13
As shown in fig. 13, the cryogenic liquid transfer apparatus of the present example further includes a second economizer 7 having a tubular shape, as compared to example 5, and the second economizer 7 having a tubular shape is the same as in example 11.
Example 14
As shown in fig. 14, the cryogenic liquid transfer apparatus of the present example further includes a second economizer 7 having a tubular shape, as compared to example 6, and the second economizer 7 having a tubular shape is the same as in example 11.
Application example
The method for cryogenic liquid transfer using the above exemplary embodiment of the present invention, taking the unloading of a tank car filled with Liquefied Natural Gas (LNG) as an example, includes:
step one, installation: the first interface 4, the second interface 5 and the third interface 6 are respectively communicated with a gas phase port, a pressurization port and a liquid phase port of a tank car filled with LNG, the fourth interface 31 is connected with a liquid phase port of a storage tank, and the second pipeline 32 is communicated with the gas phase port of the storage tank;
step two, when the pressure in the tank wagon is larger than the pressure in the storage tank, directly performing step three, and when the pressure in the tank wagon is not larger than the pressure in the storage tank, pressurizing the tank wagon, wherein the step comprises the following steps:
maintain pump 1 and close, the interior fluid of tank wagon gets into first economizer 8 after passing through second interface 5 and third interface 6, gets into 2 pressure boost of booster through pump 1, and fluid is carried out the pressure boost to the tank wagon through first pipeline 9 after the pressure boost, specifically includes:
when the device as shown in embodiment 1 or embodiment 2 is adopted, fluid flows out of the pump outlet and enters the supercharger 2, and the tank wagon is supercharged through the first pipeline 9;
when the device shown in the embodiments 3-6 is adopted, the fluid flows out of the second outlet 13 of the pump and enters the supercharger 2, and the tank wagon is supercharged through the first pipeline 9;
when the devices shown in the embodiments 7-14 are adopted, the fluid flows out of the first outlet 12 of the pump, enters the second energy-saving device 7, then enters the supercharger 2, and is used for supercharging the tank car through the first pipeline 9;
step three, pump precooling: keeping the pump 1 closed, enabling fluid in the tank car to enter the first energy-saving device 8 through the second interface 5 and the third interface 6, and enabling the fluid to enter the pump 1 from the pump inlet 11 to pre-cool the pump 1;
when the device as shown in embodiment 1 or embodiment 2 is adopted, the fluid flows out of the pump outlet after precooling;
when the device shown in embodiment 3, 5, 7, 9, 11 or 13 is used, after precooling, the fluid flows out from the pump second outlet 13 and the pump first outlet 12 respectively, the fluid flowing out from the pump second outlet 13 enters the pressure booster 2, and the fluid flowing out from the pump first outlet 12 enters the storage tank through the fourth interface 31 (as in embodiment 3 or 5), or a part of the fluid enters the pressure booster 2 after being converged into the second energy-saving device 7, and the other part of the fluid enters the storage tank through the fourth interface 31 (as in embodiment 7, 9, 11 or 13), until the pump 1 is cooled to the preset temperature; under the matching action of the valve 3 and the second outlet 13 of the pump, the fluid for cooling the pump absorbs heat and then enters the supercharger 2, so that the cooling heat is favorably utilized;
when the embodiments 4, 6, 8, 10, 12, or 14 are adopted, after pre-cooled fluid respectively flows out from the pump second outlet 13 and the pump first outlet 12, the fluid flowing out from the pump second outlet 13 is divided into two paths, one path enters the pressure booster 2, the other path enters the second pipeline 81, the fluid in the second pipeline 81 flows back to the first energy saving device 8, or enters the first pipeline 9, the fluid flowing out from the pump first outlet 12 directly enters the storage tank (as in the embodiments 4 or 6) through the fourth interface 31, or enters the pressure booster 2 through a part after being merged into the second energy saving device 7, and the other part enters the storage tank (as in the embodiments 8, 10, 12, or 14) through the fourth interface 31, until the pump 1 is cooled to the preset temperature;
step four, unloading: starting the pump 1, wherein fluid in the tank car enters the first energy-saving device 8 through the second interface 5 and the third interface 6 and then enters the pump 1;
when the device shown in the embodiment 1 or the embodiment 2 is adopted, fluid flows out of the pump outlet through the pump 1 and then is divided, one path of fluid enters the supercharger 2, the tank wagon is supercharged through the first pipeline 9, the other path of fluid enters the storage tank through the fourth interface 31, and the booster pump unloading is realized under the combined action of the supercharged tank wagon and the pump 1;
when the device shown in the embodiment 3-6 is adopted, the fluid respectively flows out from the first outlet 12 and the second outlet 13 of the pump through the pump 1, the fluid flowing out from the second outlet 13 of the pump enters the supercharger 2, is supercharged by the supercharger 2 and then flows back to the tank wagon from the first pipeline 9 to supercharge the tank wagon, the fluid flowing out from the first outlet 12 of the pump enters the storage tank through the fourth interface 31, and the booster pump is unloaded under the combined action of the supercharged tank wagon and the pump 1;
when the device shown in the embodiments 7 to 14 is adopted, the communication pipeline 71 is cut off, the fluid flows out from the first outlet 12 and the second outlet 13 of the pump through the pump 1, the fluid flowing out from the second outlet 13 of the pump enters the supercharger 2, the fluid flows back to the tank wagon from the first pipeline 9 after being supercharged by the supercharger 2 to supercharge the tank wagon, the fluid flowing out from the first outlet 12 of the pump enters the storage tank through the fourth interface 31, and the booster pump unloading is realized under the combined action of the tank wagon and the pump 1 after being supercharged.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiments according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (9)
1. The conveying device for the cryogenic liquid comprises a pump (1) and a supercharger (2), wherein the pump (1) comprises a pump inlet (11) and a pump outlet, and is characterized by further comprising a first energy-saving device (8), and the first energy-saving device (8) is communicated with the pump inlet (11).
2. A transfer device for cryogenic liquids according to claim 1, wherein the pump outlet comprises a pump first outlet (12) and a pump second outlet (13), the transfer device for cryogenic liquids further comprising a first line (131), one end of the first line (131) communicating with the pump second outlet (13), the other end of the first line (131) communicating with the booster inlet (21).
3. A cryogenic liquid transfer device according to claim 2, wherein the first line (131) is provided with a valve (3).
4. A cryogenic liquid transfer device according to claim 3, wherein the valve (3) is a pressure control valve.
5. A cryogenic liquid transfer device according to claim 1, wherein the first economizer (8) is in the form of a tube, tank or drum.
6. A cryogenic liquid transfer device according to any one of claims 2 to 5, further comprising a second line (81), the second line (81) being connected to the first line (131).
7. A cryogenic liquid transfer device according to claim 6, wherein the connection point of the second line (81) to the first line (131) is between the second pump outlet (13) and the valve (3).
8. A cryogenic liquid transfer device according to claim 3, further comprising a second economizer (7), the second economizer (7) being in communication with both the first line (131) and the first pump outlet (12).
9. A cryogenic liquid transfer device according to claim 8, wherein the second economizer (7) is in the form of a tube, tank or drum.
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| CN202122571123.9U CN216202547U (en) | 2021-10-25 | 2021-10-25 | Conveying device for low-temperature liquid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114001280A (en) * | 2021-10-25 | 2022-02-01 | 陕西融科低温设备有限公司 | Energy saver for low-temperature liquid conveying and conveying system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114001280A (en) * | 2021-10-25 | 2022-02-01 | 陕西融科低温设备有限公司 | Energy saver for low-temperature liquid conveying and conveying system |
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