CN220551254U - Multi-pump parallel liquid ring pump system - Google Patents
Multi-pump parallel liquid ring pump system Download PDFInfo
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- CN220551254U CN220551254U CN202322196604.5U CN202322196604U CN220551254U CN 220551254 U CN220551254 U CN 220551254U CN 202322196604 U CN202322196604 U CN 202322196604U CN 220551254 U CN220551254 U CN 220551254U
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- 239000007788 liquid Substances 0.000 title claims abstract description 208
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 86
- 230000001105 regulatory effect Effects 0.000 claims description 16
- 230000001502 supplementing effect Effects 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 15
- 238000000605 extraction Methods 0.000 description 7
- 239000012224 working solution Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 4
- 238000005086 pumping Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002637 fluid replacement therapy Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Abstract
The utility model provides a multi-pump parallel liquid ring pump system, which comprises a steam-water separator, a control module and at least two liquid ring pumps, wherein the steam-water separator is connected with the control module; the air inlet of the first liquid ring pump is communicated with the air outlet of the pump group main air inlet pipe, the air inlet of the pump group main air inlet pipe is communicated with the outside of the system, a pressure sensor is further arranged near the air inlet of the pump group main air inlet pipe, the air outlet of the first liquid ring pump is communicated with the air inlet of the pump group main air outlet pipe, and the air outlet of the pump group main air outlet pipe is communicated with the air inlet of the steam-water separator; the air inlets of the rest liquid ring pumps are communicated with the pump group main air inlet pipe through respective corresponding branch air inlet pipes, and the air outlets of the rest liquid ring pumps are communicated with the pump group main air outlet pipe through respective corresponding branch air outlet pipes; an air inlet check valve and an air inlet manual switch valve are arranged on an air inlet of each liquid ring pump, and an air outlet check valve and an air outlet manual switch valve are arranged on an air outlet of each liquid ring pump. The utility model obviously improves the suction gas volume range of the liquid ring pump unit and the reliability of the system.
Description
Technical Field
The utility model belongs to the technical field of liquid ring pumps, and particularly relates to a multi-pump parallel liquid ring pump system.
Background
At present, a practical liquid ring pump system consists of a single liquid ring pump and matched equipment. When the liquid ring pump is used singly, the adjustable gas flow range is smaller, and once the liquid ring pump fails, the liquid ring pump needs to be stopped for maintenance. During service, the entire liquid ring pump system is not operational. Although the liquid ring pump system composed of the liquid ring pumps with high power and good quality is selected to be helpful for expanding the adjustable gas flow range to a certain extent and reducing the frequency of faults, the liquid ring pump system composed of a single liquid ring pump and matched equipment cannot fundamentally overcome the technical defects.
Disclosure of Invention
The utility model aims to expand the adjustable air volume range of the liquid ring pump system and improve the working stability of the liquid ring pump system, thereby overcoming the defects of the prior art.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a multi-pump parallel liquid ring pump system comprises a steam-water separator, a control module and at least two liquid ring pumps, wherein each liquid ring pump is provided with a motor; the air inlet of the first liquid ring pump is communicated with the air outlet of the pump group main air inlet pipe, the air inlet of the pump group main air inlet pipe is communicated with an air source outside the system, a pressure sensor is further arranged near the air inlet of the pump group main air inlet pipe, the air outlet of the first liquid ring pump is communicated with the air inlet of the pump group main air outlet pipe, and the air outlet of the pump group main air outlet pipe is communicated with the air inlet of the steam-water separator; the air inlets of the rest liquid ring pumps are communicated with the pump group main air inlet pipe through respective corresponding branch air inlet pipes, and the air outlets of the rest liquid ring pumps are communicated with the pump group main air outlet pipe through respective corresponding branch air outlet pipes; an air inlet check valve and an air inlet manual switch valve are arranged on an air inlet of each liquid ring pump, and an air outlet check valve and an air outlet manual switch valve are arranged on an air outlet of each liquid ring pump;
the top of the steam-water separator is provided with an exhaust port, the exhaust port is communicated with the outside of the system through an exhaust pipe, the exhaust pipe is also communicated with a pump group total exhaust pipe through a branch exhaust pipe, and the branch exhaust pipe is provided with a branch exhaust pipe electric control regulating valve; a liquid level sensor is arranged on one side of the steam-water separator, a liquid supplementing port and a liquid draining port are respectively arranged on the other side of the steam-water separator, an electric control valve for liquid supplementing is arranged on a pipeline communicated with the liquid supplementing port, and an electric control valve for liquid draining is arranged on the pipeline communicated with the liquid draining port; the bottom of the steam-water separator is provided with a water return port, the water return port is communicated with the water inlet of the heat exchanger through the front section of the water return pipe, the water outlet of the heat exchanger is communicated with the water inlet of the first liquid ring pump through the rear section of the water return pipe, the rear section of the water return pipe is also respectively communicated with the water inlets of the rest liquid ring pumps through branch pipes, and the rear section of the water return pipe and the branch pipes thereof are also respectively provided with a water return switch valve;
the control module is respectively in communication connection with each motor, the liquid level sensor, the liquid supplementing electric control valve, the liquid discharging electric control valve, the branch exhaust pipe electric control regulating valve and the pressure sensor.
On the basis of the technical scheme, the utility model can be added with the following technical means so as to solve the technical problems to be solved by the utility model more pertinently:
the backwater switch valve on the backwater pipe rear section and the branch pipe is a manual switch valve.
Further, the backwater switch valve on the rear section of the backwater pipe and the branch pipe thereof is an electric switch valve.
Compared with the prior art, the utility model has the main beneficial effects as follows:
due to the technical means that a plurality of liquid ring pumps are used in parallel at the same time or are mutually standby and the corresponding control method, the utility model obviously improves the suction gas volume range of the liquid ring pump unit and the reliability of the system.
Drawings
Fig. 1 is a schematic structural view of embodiment 1 of the present utility model.
In the figure:
1-a first liquid ring pump; 2-a first motor;
3—a first exhaust check valve; 4-first exhaust manual switch valve;
5-steam-water separator; 6-a liquid level sensor;
7, an electric control valve for fluid replacement; 8-an electric control valve for liquid discharge;
9-a second exhaust manual switch valve; 10-a second exhaust check valve;
11-a second motor; 12—a second liquid ring pump;
13—a second intake check valve; 14—a second intake manual switch valve;
15-a second backwater manual switch valve; 16-a heat exchanger;
17-a first backwater manual switch valve; 18—a first intake check valve;
19—a first intake manual switch valve; 20-an electric control regulating valve of a branch exhaust pipe;
21—a control module; 22-pressure sensor;
23-pump group total air inlet pipe; 24-pump unit total exhaust pipe;
25-return pipe.
Detailed Description
In order to facilitate the technical solution and the working principle of the present utility model to be more fully understood by those skilled in the art, the following describes three embodiments of the present utility model by taking a liquid ring pump system formed by connecting two liquid ring pumps in parallel as an example, and referring to the accompanying drawings, wherein, embodiment 1 and embodiment 2 relate to structural features of the present utility model, and embodiment 3 relates to a control method of the present utility model.
Example 1
As shown in fig. 1, a liquid ring pump system formed by connecting two liquid ring pumps in parallel comprises a first liquid ring pump 1, a first motor 2, a second liquid ring pump 12, a second motor 11, a steam-water separator 5 and a control module 21; the air inlet of the first liquid ring pump 1 is communicated with the air outlet of a pump group main air inlet pipe 23, the air inlet of the pump group main air inlet pipe 23 is communicated with an air source outside the system, and a pressure sensor 22 is arranged near the air inlet of the pump group main air inlet pipe 23; the exhaust port of the first liquid ring pump 1 is communicated with the air inlet of the pump group total exhaust pipe 24, and the air outlet of the pump group total exhaust pipe 24 is communicated with the air inlet of the steam-water separator 5; the air inlet of the second liquid ring pump 12 is communicated with the pump group total air inlet pipe 23 through a branch air inlet pipe, the air outlet of the second liquid ring pump 12 is communicated with the pump group total air outlet pipe 24 through a branch air outlet pipe (which means that the first liquid ring pump and the second liquid ring pump are in parallel relation in the pipeline connection relation of air inlet and air outlet), the first motor 2 is electrically connected with the first liquid ring pump 1, and the second motor 11 is electrically connected with the second liquid ring pump 12.
A first air inlet check valve 18 and a first air inlet manual switch valve 19 are arranged on an air inlet of the first liquid ring pump 1, and a first air outlet check valve 3 and a first air outlet manual switch valve 4 are arranged on an air outlet of the first liquid ring pump 1; the air inlet of the second liquid ring pump 12 is provided with a second air inlet check valve 13 and a second air inlet manual switch valve 14, and the air outlet of the second liquid ring pump 12 is provided with a second air outlet check valve 10 and a second air outlet manual switch valve 9.
The top of the steam-water separator 5 is provided with an exhaust port which is communicated with the outside of the system through an exhaust pipe, the exhaust pipe is also communicated with a pump group total exhaust pipe 24 through a branch exhaust pipe, and the branch exhaust pipe is provided with a branch exhaust pipe electric control regulating valve 20; a liquid level sensor 6 is arranged on one side of the steam-water separator 5, a liquid supplementing port and a liquid draining port are respectively arranged on the other side of the steam-water separator 5, an electric control valve 7 for liquid supplementing is arranged on a pipeline communicated with the liquid supplementing port, and an electric control valve 8 for liquid draining is arranged on a pipeline communicated with the liquid draining port; the bottom of the steam-water separator 5 is provided with a water return port, the water return port is communicated with the water inlet of the heat exchanger 16 through the front section of the water return pipe 25, the water outlet of the heat exchanger 16 is respectively communicated with the water inlets of the first liquid ring pump 1 and the second liquid ring pump 12 through the rear section of the water return pipe 25 and the branch pipes thereof, and the rear section of the water return pipe and the branch pipes thereof are respectively provided with a first water return manual switch valve 17 and a second water return manual switch valve 15.
The control module 21 is respectively in communication connection with the first motor 2, the second motor 11, the liquid level sensor 6, the liquid supplementing electric control valve 7, the liquid discharging electric control valve 8, the branch exhaust pipe electric control regulating valve 20 and the pressure sensor 22.
The structural features of embodiment 1 of the present utility model are described above in connection with fig. 1. In addition, in the process of implementing the technical solution of this embodiment, according to actual needs, the number of liquid ring pumps connected in parallel in the system may be increased, for example, a third liquid ring pump (to be equipped with a third motor), a fourth liquid ring pump (to be equipped with a fourth motor), etc. (the number of liquid ring pumps connected in parallel in the system may reach 10 at most). The third liquid ring pump and the fourth liquid ring pump are respectively communicated with the pump group main air inlet pipe 23 and the pump group main air outlet pipe through the corresponding branch air inlet pipe and the corresponding branch air outlet pipe, and a third air inlet check valve, a third air inlet manual switch valve, a third air outlet check valve, a third air outlet manual switch valve, a fourth air inlet check valve, a fourth air inlet manual switch valve, a fourth air outlet check valve and a fourth air outlet manual switch valve are respectively arranged on the corresponding branch air inlet pipe and the corresponding branch air outlet pipe.
Example 2
The basic structure of embodiment 2 is the same as that of embodiment 1, except that in embodiment 2, the first backwater manual switching valve 17 and the second backwater manual switching valve 15 are replaced by a first electric switching valve and a second electric switching valve, respectively, and the first electric switching valve and the second electric switching valve are communicatively connected to the control module 21, respectively.
The first backwater manual switch valve 17 and the second backwater manual switch valve 15 are replaced by a first electric switch valve and a second electric switch valve, which have the following significance: if the discharge port is provided with a discharge pressure (the pressure of the discharge port of the liquid ring pump is greater than the atmospheric pressure, then the discharge pressure is called as the pressure of the liquid ring pump, at the moment, the pressure in the gas-water separator is greater than the atmospheric pressure, when the liquid ring pump is not started, the pump does not discharge working liquid, but the pressure in the gas-water separator can push the working liquid to be continuously filled into the pump, when the discharge pressure is large enough, the spaces in the pump and the pipeline are filled completely), the first backwater manual switch valve 17 and the second backwater manual switch valve 15 are replaced by the first electric switch valve and the second electric switch valve, and the control module 21 controls the first electric switch valve and the second electric switch valve to be opened or closed synchronously along with the start-stop of the first liquid ring pump and the second liquid ring pump, so that the working liquid with pressure can not be filled into the pump when the first liquid ring pump and the second liquid ring pump are stopped.
In addition, as in the technical solution of embodiment 1, in the process of implementing the technical solution of this embodiment, the number of liquid ring pumps connected in parallel in the system (up to 10 liquid ring pumps) may be increased according to actual needs.
Example 3
Embodiment 3 is a control method corresponding to embodiment 1, that is, a control method of a liquid ring pump system composed of two liquid ring pumps connected in parallel. The method comprises the following steps:
step 1, the control module 21 sets the normal working liquid level of the vapor-water separator 5, when the liquid ring pump system works, the initial liquid level of the vapor-water separator 5 is zero, the liquid level information is fed back to the control module 21 by the liquid level sensor 6, and the control module 21 automatically controls the switch of the electric control valve 7 for liquid supplementing and the electric control valve 8 for liquid discharging to keep the liquid level in the vapor-water separator 5 normal according to the set normal liquid level value.
And 2, when the working liquid level of the vapor-water separator 5 is normal, starting the first liquid ring pump 1 or the second liquid ring pump 12, and when the first liquid ring pump 1 or the second liquid ring pump 12 works, discharging gas and water into the vapor-water separator 5, separating the gas and the working liquid into gas and the working liquid in the vapor-water separator 5, and discharging the gas out of the system through an exhaust port of the vapor-water separator 5.
Step 3, after the working solution separated by the steam-water separator 5 enters the heat exchanger 16 through the front section of the water return pipe 25 to be cooled, the working solution flows back into the first liquid ring pump 1 through the rear section of the water return pipe 25 and the first water return manual switch valve 17 arranged on the rear section of the water return pipe 25, or flows back into the second liquid ring pump 12 through the branch pipe of the rear section of the water return pipe 25 and the second water return manual switch valve 15 arranged on the branch pipe, so that the working solution required by the normal operation of the first liquid ring pump 1 or the second liquid ring pump 12 is always kept, and the heat generated by the operation of the first liquid ring pump 1 or the second liquid ring pump 12 is dispersed by the heat exchanger 16.
And 4, the pressure sensor 22 monitors the air inlet pressure of the pump group main air inlet pipe 23 and feeds back the pressure to the control module 21, if the absolute pressure of the air inlet is lower than a normal set value, the air extraction amount of the first liquid ring pump 1 or the second liquid ring pump 12 is larger, and in this case, the control module 21 opens the branch air outlet pipe electric control regulating valve 20 to regulate the amount of the backflow air, so that the pressure of the air inlet of the pump group main air inlet pipe 23 is regulated and stabilized. The sensor for measuring the intake port pressure has two kinds, one measured value is called absolute pressure, and absolute pressure is measured based on absolute zero pressure, and the absolute pressure can be only a positive number; another measured value is called gauge pressure, which is a relative pressure value measured with the atmospheric pressure as zero reference, and can be negative or positive. The two sensors measure values differing by one atmospheric pressure value, but the references are different, and the actual pressure values are equal. The absolute pressure is selected as a set value relatively simply, and because the atmospheric pressure is not a stable value, the atmospheric pressure may fluctuate with the change of places, seasons and weather, and the normal set value is set according to the absolute pressure value without considering the change of the atmospheric pressure.
Step 5, if the absolute pressure of the air inlet of the pump group total air inlet pipe 23 is higher than the normal set value, the air extraction amount of the first liquid ring pump 1 or the second liquid ring pump 12 is smaller, in this case, the control module 21 closes the branch air outlet pipe electric control regulating valve 20 to regulate the amount of the return air, so as to regulate and stabilize the pressure of the air inlet of the pump group total air inlet pipe 23; if the branch exhaust pipe electric control regulating valve 20 is completely closed and the requirements are not met, starting the unused liquid ring pump to increase the extraction amount (namely, simultaneously using the first liquid ring pump 1 and the second liquid ring pump 12 for extraction), and if the absolute pressure of the air inlet is lower than the normal set value at the moment, indicating that the liquid ring pump extraction amount is large, in this case, the control module 21 opens the branch exhaust pipe electric control regulating valve 20 to regulate the amount of the backflow gas, thereby regulating and stabilizing the pressure of the air inlet of the liquid ring pump system.
And 6, when the process system of a user changes and the air quantity demand is reduced, the pressure sensor 22 monitors the air inlet pressure of the main air inlet pipe 23 of the pump set and feeds back the air inlet pressure to the control module 21, at the moment, the absolute pressure of the air inlet of the main air inlet pipe 23 of the pump set is lower than a normal set value, if the electric control regulating valve 20 of the exhaust pipe is opened to regulate the quantity of the backflow air, one liquid ring pump is stopped, and the check valve arranged on the air inlet and the air outlet of the liquid ring pump can effectively prevent the air from flowing back into the process system or the liquid ring pump when the liquid ring pump is stopped.
In the above, a control method of a liquid ring pump system composed of two liquid ring pumps connected in parallel is described. The method is further described below in connection with specific technical parameters:
for example, a vacuum process system needs to operate stably at an absolute pressure of 100mbar and the gas flow at this pressure point ranges from 80 to 180m 3 /min, not a fixed value. In this case, two 100m machines can be selected 3 Liquid ring pump at @ 100mbar (100 m 3 The meaning of @ min @ 100mbar is: the suction capacity of the liquid ring pump is 100m under the working condition of absolute pressure of 100mbar 3 By min, the meaning of the following similar expression is so inferred, a liquid ring pump system is built up according to the above-described scheme. At this time, the total working capacity of the liquid ring pump system is in the range of 100 to 200m 3 100 mbar/min can meet the requirements of a vacuum processing system. Assume that the amount of gas required by the vacuum process system is 80m 3 100 mbar/min, the control method comprises the following steps:
step 1, the control module 21 sets the normal working liquid level of the vapor-water separator 5, when the liquid ring pump system works, the initial liquid level of the vapor-water separator 5 is zero, the liquid level information is fed back to the control module 21 by the liquid level sensor 6, and the control module 21 automatically controls the switch of the electric control valve 7 for liquid supplementing and the electric control valve 8 for liquid discharging to keep the liquid level in the vapor-water separator 5 normal according to the set normal liquid level value.
And 2, when the working liquid level of the vapor-water separator 5 is normal, starting the first liquid ring pump 1 or the second liquid ring pump 12, and when the first liquid ring pump 1 or the second liquid ring pump 12 works, discharging gas and water into the vapor-water separator 5, separating the gas and the working liquid into gas and the working liquid in the vapor-water separator 5, and discharging the gas out of the system through an exhaust port of the vapor-water separator 5.
Step 3, after the working solution separated by the steam-water separator 5 enters the heat exchanger 16 through the front section of the water return pipe 25 to be cooled, the working solution flows back into the first liquid ring pump 1 through the rear section of the water return pipe 25 and the first water return manual switch valve 17 arranged on the rear section of the water return pipe 25, or flows back into the second liquid ring pump 12 through the branch pipe of the rear section of the water return pipe 25 and the second water return manual switch valve 15 arranged on the branch pipe, so that the working solution required by the normal operation of the first liquid ring pump 1 or the second liquid ring pump 12 is always kept, and the heat generated by the operation of the first liquid ring pump 1 or the second liquid ring pump 12 is dispersed by the heat exchanger 16.
At the moment, the working capacity value of one liquid ring pump is 100m 3 100mbar @ min @ is greater than the desired value of the system of 80m 3 The absolute pressure value at the inlet is reduced by 100 mbar/min, and if not adjusted, the final change in pressure p2=80×100/100=80 mbar below the normal set point of 100mbar can be estimated by the formula p1×v1=p2×v2.
Step 4, the pressure sensor 22 monitors the air inlet pressure of the pump set main air inlet pipe 23 to 80mbar, and feeds back the pressure to the control module 21, and if the absolute pressure of the air inlet is lower than the normal set value of 100mbar, the air extraction amount of the first liquid ring pump 1 or the second liquid ring pump 12 is larger, in this case, the control module 21 opens the branch air outlet pipe electric control regulating valve 20 to regulate the amount of the backflow air, so as to regulate and stabilize the pressure of the air inlet of the pump set main air inlet pipe 23, and stabilize to the normal set value of 100mbar.
Assuming that the working condition of the vacuum process system changes, the required gas quantity is 180m 3 100mbar @ min @ at which the working capacity of a liquid ring pump is 100m 3 100mbar @ min @ is less than the system required value of 180m 3 100 mbar/min. The absolute pressure value of the air inlet is increased, if not adjusted, the final change condition of the pressure p2=180×100/100=180 mbar can be estimated according to the formula of p1=p2×v2, and the final change condition is larger than the normal set value of 100mbar.
Step 5, if the absolute pressure of the air inlet of the pump group total air inlet pipe 23 is higher than the normal set value, the air extraction amount of the first liquid ring pump 1 or the second liquid ring pump 12 is smaller, in this case, the control module 21 closes the branch air outlet pipe electric control regulating valve 20 to regulate the amount of the return air, so as to regulate and stabilize the pressure of the air inlet of the pump group total air inlet pipe 23; at this time, if the electronically controlled regulator 20 of the branch exhaust pipe is completely closed and cannot meet the requirement, the unused liquid ring pump is started to increase the pumping capacity (i.e. the first liquid ring pump 1 and the second liquid ring pump 12 are simultaneously used for pumping)
After the second liquid ring pump is started, the total working capacity becomes 200m 3 100mbar @ min @ is greater than the system desired value of 180m 3 The absolute pressure value at the inlet is reduced by 100 mbar/min, and if not adjusted, the final change in pressure, p2=180×100/200=90 mbar, can be estimated as p1×v1=p2×v2, below the normal set point of 100mbar. This means that the liquid ring pump is pumping too much, in which case the control module 21 opens the electronically controlled regulator valve 20 of the branch exhaust pipe to regulate the amount of return gas and thereby regulate and stabilize the pressure at the inlet of the liquid ring pump system. Stable to the normal set value of 100mbar.
It should be noted that, when the number of the liquid ring pumps connected in parallel in the system exceeds two, the control principle of the liquid ring pump system is the same, for example, when three liquid ring pumps in the system are used, one of the liquid ring pumps can be started to work, the remaining two liquid ring pumps are standby, the two liquid ring pumps can also be started to work, and the remaining one liquid ring pump is standby, if necessary, three liquid ring pumps can be started to work simultaneously.
Claims (3)
1. A multi-pump parallel liquid ring pump system, characterized in that: the device comprises a steam-water separator, a control module and at least two liquid ring pumps, wherein each liquid ring pump is provided with a motor; the air inlet of the first liquid ring pump is communicated with the air outlet of the pump group main air inlet pipe, the air inlet of the pump group main air inlet pipe is communicated with an air source outside the system, a pressure sensor is further arranged near the air inlet of the pump group main air inlet pipe, the air outlet of the first liquid ring pump is communicated with the air inlet of the pump group main air outlet pipe, and the air outlet of the pump group main air outlet pipe is communicated with the air inlet of the steam-water separator; the air inlets of the rest liquid ring pumps are communicated with the pump group main air inlet pipe through respective corresponding branch air inlet pipes, and the air outlets of the rest liquid ring pumps are communicated with the pump group main air outlet pipe through respective corresponding branch air outlet pipes; an air inlet check valve and an air inlet manual switch valve are arranged on an air inlet of each liquid ring pump, and an air outlet check valve and an air outlet manual switch valve are arranged on an air outlet of each liquid ring pump;
the top of the steam-water separator is provided with an exhaust port, the exhaust port is communicated with the outside of the system through an exhaust pipe, the exhaust pipe is also communicated with a pump group total exhaust pipe through a branch exhaust pipe, and the branch exhaust pipe is provided with a branch exhaust pipe electric control regulating valve; a liquid level sensor is arranged on one side of the steam-water separator, a liquid supplementing port and a liquid draining port are respectively arranged on the other side of the steam-water separator, an electric control valve for liquid supplementing is arranged on a pipeline communicated with the liquid supplementing port, and an electric control valve for liquid draining is arranged on the pipeline communicated with the liquid draining port; the bottom of the steam-water separator is provided with a water return port, the water return port is communicated with the water inlet of the heat exchanger through the front section of the water return pipe, the water outlet of the heat exchanger is communicated with the water inlet of the first liquid ring pump through the rear section of the water return pipe, the rear section of the water return pipe is also respectively communicated with the water inlets of the rest liquid ring pumps through branch pipes, and the rear section of the water return pipe and the branch pipes thereof are also respectively provided with a water return switch valve;
the control module is respectively in communication connection with each motor, the liquid level sensor, the liquid supplementing electric control valve, the liquid discharging electric control valve, the branch exhaust pipe electric control regulating valve and the pressure sensor.
2. The multiple pump parallel liquid ring pump system of claim 1, wherein: the backwater switch valve on the backwater pipe rear section and the branch pipe is a manual switch valve.
3. The multiple pump parallel liquid ring pump system of claim 1, wherein: the backwater switch valve on the backwater pipe rear section and the branch pipe is an electric switch valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322196604.5U CN220551254U (en) | 2023-08-16 | 2023-08-16 | Multi-pump parallel liquid ring pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322196604.5U CN220551254U (en) | 2023-08-16 | 2023-08-16 | Multi-pump parallel liquid ring pump system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220551254U true CN220551254U (en) | 2024-03-01 |
Family
ID=90003530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322196604.5U Active CN220551254U (en) | 2023-08-16 | 2023-08-16 | Multi-pump parallel liquid ring pump system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220551254U (en) |
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2023
- 2023-08-16 CN CN202322196604.5U patent/CN220551254U/en active Active
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