CN220956043U - Configuration system based on Roots vacuum unit participation start-up - Google Patents
Configuration system based on Roots vacuum unit participation start-up Download PDFInfo
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- CN220956043U CN220956043U CN202323143701.4U CN202323143701U CN220956043U CN 220956043 U CN220956043 U CN 220956043U CN 202323143701 U CN202323143701 U CN 202323143701U CN 220956043 U CN220956043 U CN 220956043U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 239000012530 fluid Substances 0.000 claims description 5
- 230000001502 supplementing effect Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 2
- 238000005086 pumping Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000012224 working solution Substances 0.000 description 1
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Abstract
A configuration system based on Roots vacuum unit participation start-up. At present, the Roots water ring vacuum unit can only be used for maintaining vacuum after the start-up, the Roots pump can not work under the rough vacuum at the start-up stage of the unit, and the suction capacity can not meet the requirements of users during the start-up. The product comprises the following components: the heat exchanger (1), work box (2) and inlet main inlet pipeline (3), inlet main inlet pipeline and first inlet pipe (4), second inlet pipe (5) and third inlet pipe (6) are connected, install pump (7) and first inlet valve (8) respectively on the first inlet pipe, install pump (9) and second inlet valve (10) respectively on the second inlet pipe, install pump (11) and third inlet valve (12) respectively on the third inlet pipe, install bypass admission valve (13) on the inlet main inlet pipeline. The utility model is applied to the field of Roots water ring vacuum units.
Description
Technical Field
The utility model relates to a configuration system based on Roots vacuum units participating in startup.
Background
Along with the national energy structure adjustment and the energy-saving requirement of a condenser vacuumizing system, a vacuumizing scheme of the cooperation work of various units is gradually formed, the Roots water ring vacuum unit is widely applied in large-scale thermal power plants, and the Roots water ring vacuum unit has positive significance for propelling high-vacuum operation and saving energy.
However, the Roots water ring vacuum unit can only be used for maintaining vacuum after starting, the Roots pump cannot work under rough vacuum at the starting stage of the unit, and the sucking capacity at the starting time cannot meet the requirements of users. Therefore, when the Roots water ring vacuum unit participates in starting, the output capacity plays a crucial role.
Disclosure of Invention
The utility model aims to provide a configuration system based on participation of a Roots vacuum unit in starting.
The above object is achieved by the following technical scheme:
A configuration system based on Roots vacuum unit participation start-up comprises: the heat exchanger comprises a heat exchanger, a working box and an air inlet main port pipeline, wherein the air inlet main port pipeline is connected with a first inlet pipe, a second inlet pipe and a third inlet pipe, a first pump and a first inlet valve are respectively arranged on the first inlet pipe, a second pump and a second inlet valve are respectively arranged on the second inlet pipe, a third pump and a third inlet valve are respectively arranged on the third inlet pipe, a bypass air inlet valve is arranged on the air inlet main port pipeline, and the second pump and the third pump are connected with a working fluid drain and a main drain outlet pipeline.
The configuration system based on the Roots vacuum unit is connected with the working box through a pipeline, and the working box is respectively connected with the exhaust port pipeline and the working liquid water supplementing pipeline.
The configuration system based on the Roots vacuum unit participating in starting is characterized in that the first pump is connected with the heat exchanger, and the heat exchanger is respectively connected with a water return pipeline of the heat exchanger and a water inlet pipeline of the heat exchanger.
The configuration system based on the participation of the Roots vacuum unit in starting the machine is characterized in that the first pump is a Roots pump, and the second pump and the third pump are water ring pumps.
The configuration system based on the participation of the Roots vacuum unit in starting the machine is characterized in that the first inlet valve is a Roots pump inlet valve, and the second inlet valve and the third inlet valve are water ring pump inlet valves.
The utility model has the beneficial effects that:
1. The running condition of the Roots pump is that the Roots pump works under high back pressure, the Roots pump does not work when vacuum is built in the initial stage, and only the front stage water ring pump is exerting force.
2. In the utility model, a Roots unit with 25% capability of design parameters is taken as an example, the pumping capability of the Roots water ring unit is only 8% when the Roots water ring unit is started, the pumping capability of the Roots water ring unit gradually rises from 8% along with the improvement of vacuum, and the pumping capability of the Roots water ring unit reaches 25% when the vacuum degree reaches 10kpa.
3. The utility model designs a configuration combination of 2 front-stage water ring pumps and 1 Roots pump for improving the air extraction capability of the Roots water ring unit when the machine is started, and automatically adjusts and switches according to the change of starting working conditions, so that the unit always operates at a high-efficiency point, thereby not only meeting the designed air extraction capability requirement during starting, but also meeting the high-efficiency energy-saving requirement during vacuum maintenance.
4. Compared with the technology that the existing high-power water ring vacuum pump participates in starting, and the Roots vacuum pump keeps the condenser in daily operation, the novel scheme further improves the comprehensive output of the condensing unit and realizes the accurate control of the system operation. The double optimization effects of energy saving and quick start are achieved. The automatic adjustment combination scheme of the Roots pump and the water ring pump optimizes the system configuration performance curve, always keeps the vacuum pump at a matched high-efficiency operating point, maintains vacuum and reduces the operating power consumption.
5. Compared with the prior art that the high-power water ring vacuum pump participates in starting, the Roots vacuum pump daily operation maintenance condenser has the following advantages:
(1) The system can reach design capacity under any working condition, shortens startup time and realizes quick startup.
(2) The system can automatically adjust the combination scheme according to the performance curves of the Roots pump and the water ring pump, match the high-efficiency operation point, and is also at the high-efficiency point when maintaining vacuum, thereby saving the operation cost.
(3) The comprehensive output of the combined machine set is improved. The accurate control of the system operation is realized.
Drawings
Fig. 1 is a schematic diagram of the structure of the present utility model.
In the figure: 1. the heat exchanger comprises a heat exchanger, 2, a working box, 3, an air inlet main port pipeline, 4, a first inlet pipe, 5, a second inlet pipe, 6, a third inlet pipe, 7, a first pump, 8, a first inlet valve, 9, a second pump, 10, a second inlet valve, 11, a third pump, 12, a third inlet valve, 13, a bypass air inlet valve, 14, a working fluid drainage and main water outlet pipeline, 15, an exhaust port pipeline, 16, a working fluid water supplementing pipeline, 17, a heat exchanger water return pipeline, 18 and a heat exchanger water inlet pipeline.
Detailed Description
Examples
A configuration system based on Roots vacuum unit participation start-up comprises: the heat exchanger 1, the work box 2 and the air inlet main port pipeline 3, the air inlet main port pipeline be connected with first inlet pipe 4, second inlet pipe 5 and third inlet pipe 6, first inlet pipe on install pump 7 and first inlet valve 8 respectively, second inlet pipe is last to install pump 9 and second inlet valve 10 respectively, install pump 11 and third inlet valve 12 respectively on the third inlet pipe, the air inlet main port pipeline on install bypass admission valve 13, pump and No. three be connected with working solution drainage and total outlet pipeline 14.
The configuration system based on the Roots vacuum unit participating in starting is characterized in that the second pump and the third pump are connected with a working box through pipelines, and the working box is respectively connected with an exhaust port pipeline 15 and a working fluid water supplementing pipeline 16.
The configuration system based on the Roots vacuum unit participating in starting is characterized in that the first pump is connected with the heat exchanger, and the heat exchanger is respectively connected with the heat exchanger water return pipeline 17 and the heat exchanger water inlet pipeline 18.
The configuration system based on the participation of the Roots vacuum unit in starting the machine is characterized in that the first pump is a Roots pump, and the second pump and the third pump are water ring pumps.
The configuration system based on the participation of the Roots vacuum unit in starting the machine is characterized in that the first inlet valve is a Roots pump inlet valve, and the second inlet valve and the third inlet valve are water ring pump inlet valves.
Mode of operation
(1) When the host is started, the second inlet valve (water ring pump inlet valve) and the third inlet valve (water ring pump inlet valve) are opened, the second pump (water ring pump) and the third pump (water ring pump) are in parallel connection, when the pressure difference detected by the pressure first transmitter and the pressure difference detected by the pressure second transmitter are smaller than 3kpa, the bypass air inlet valve is opened, the vacuum unit starts to do work and output, and the unit output capacity reaches the design capacity. The output of the Roots water ring unit with 25% capacity can reach 25% when the machine is started.
(2) When the back pressure reaches 10kpa.A, the first pump (Roots pump) works, the first inlet valve (Roots pump inlet valve) is opened, the third inlet valve (water ring pump inlet valve) is closed, the third pump (water ring pump) is stopped, the first pump (Roots pump) and the second pump (water ring pump) of the unit work in series, and the vacuum pump output is 25% when the vacuum is maintained.
(3) When the pump of any pump of the unit fails during normal operation, the unit realizes parallel or serial combined operation through an automatic valve adjustment combination mode, equipment is not stopped, and the safety and the stability of the equipment operation are improved in terms of safety.
Claims (5)
1. A configuration system based on Roots vacuum unit participation start-up comprises: heat exchanger, working box and inlet manifold way, characterized by: the air inlet main port pipeline is connected with a first inlet pipe, a second inlet pipe and a third inlet pipe, the first inlet pipe is provided with a first pump and a first inlet valve respectively, the second inlet pipe is provided with a second pump and a second inlet valve respectively, the third inlet pipe is provided with a third pump and a third inlet valve respectively, the air inlet main port pipeline is provided with a bypass air inlet valve, and the second pump and the third pump are connected with a working fluid drain and a main drain outlet pipeline.
2. The configuration system based on the participation start-up of the Roots vacuum unit according to claim 1, wherein the configuration system is characterized in that: the second pump and the third pump are connected with the working box through pipelines, and the working box is respectively connected with the exhaust port pipeline and the working liquid water supplementing pipeline.
3. The configuration system based on the participation start-up of the Roots vacuum unit according to claim 1, wherein the configuration system is characterized in that: the first pump is connected with the heat exchanger, and the heat exchanger is respectively connected with a water return pipeline of the heat exchanger and a water inlet pipeline of the heat exchanger.
4. The configuration system based on the participation start-up of the Roots vacuum unit according to claim 1, wherein the configuration system is characterized in that: the first pump is a Roots pump, and the second pump and the third pump are water ring pumps.
5. The configuration system based on the participation start-up of the Roots vacuum unit according to claim 1, wherein the configuration system is characterized in that: the first inlet valve is a Roots pump inlet valve, and the second inlet valve and the third inlet valve are water ring pump inlet valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323143701.4U CN220956043U (en) | 2023-11-21 | 2023-11-21 | Configuration system based on Roots vacuum unit participation start-up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323143701.4U CN220956043U (en) | 2023-11-21 | 2023-11-21 | Configuration system based on Roots vacuum unit participation start-up |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220956043U true CN220956043U (en) | 2024-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323143701.4U Active CN220956043U (en) | 2023-11-21 | 2023-11-21 | Configuration system based on Roots vacuum unit participation start-up |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220956043U (en) |
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2023
- 2023-11-21 CN CN202323143701.4U patent/CN220956043U/en active Active
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