CN214464750U - Compressed air energy storage power generation system pipeline sweeps device - Google Patents
Compressed air energy storage power generation system pipeline sweeps device Download PDFInfo
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- CN214464750U CN214464750U CN202120244396.XU CN202120244396U CN214464750U CN 214464750 U CN214464750 U CN 214464750U CN 202120244396 U CN202120244396 U CN 202120244396U CN 214464750 U CN214464750 U CN 214464750U
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Abstract
A compressed air energy storage power generation system pipeline purging device comprises a low-pressure compressor, wherein an outlet of the low-pressure compressor is connected with an inlet of the high-pressure compressor, an outlet pipeline of the high-pressure compressor is divided into two paths, one path is connected to a first high-pressure main throttle, the other path is connected to a second high-pressure main throttle, and a pipeline behind the first high-pressure main throttle and the second high-pressure main throttle is combined into one path and connected with an inlet pipeline of the low-pressure main throttle; the low-pressure main valve rear pipeline is connected with an emptying pipeline, and a blowing door and a target plate are sequentially arranged on the emptying pipeline. The utility model has the characteristics of simple structure, safe and reliable.
Description
Technical Field
The utility model relates to a compressed air energy storage power generation technical field, in particular to compressed air energy storage power generation system pipeline sweeps device.
Background
In recent years, with the promotion of the requirements of energy conservation and environmental protection in China, new energy power generation, particularly wind power generation and photovoltaic generation, is rapidly developed, and load randomness and fluctuation which are specific to the two power generation modes cause great challenges to peak shaving and stable operation of a power grid. The efficient power energy storage technology can play an important role in peak clipping and valley filling of a power grid, smooth fluctuation and energy structure optimization. The compressed air energy storage has the characteristics of low investment cost, relatively simple system structure, high environmental friendliness and the like, provides a new idea for solving the problem, and is an important development direction in the field of energy storage at present.
Compressed air energy storage is one of the main technologies of electric energy storage at present. The working principle of the energy storage power station is similar to that of a pumped storage power station, and in the energy storage stage, the electric energy is converted into air potential energy and heat energy by using the motor to drive the compressor, and the air potential energy and the heat energy are respectively stored in the air storage device and the heat storage device. In the energy releasing stage, compressed air is released, a regenerative system is used for heating, and an air turbine is driven to do work to complete the conversion of electric energy.
At present, research and development aiming at compressed air energy storage and power generation are fully developed, and related test platforms and demonstration projects are also in planning. At present, no commercial compressed air energy storage power generation system exists in China, the structure of a thermodynamic system of the compressed air energy storage power generation system is different from that of a traditional power generation set, and debugging and operation experience are poor. After the compressed air energy storage power generation system is produced, manufactured, transported and installed, impurities such as oxide skin and welding slag can be remained in a pipeline, and potential safety hazards are caused to the follow-up operation of a unit. How to carry out large-traffic to the pipeline and sweep, clear away impurity, guarantee unit start-up safety becomes the problem that needs to solve urgently.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide a compressed air energy storage power generation system pipeline purging device, which has the characteristics of simple structure, safety and reliability.
In order to realize the purpose, the utility model discloses a technical scheme is:
a compressed air energy storage power generation system pipeline purging device comprises a low-pressure compressor 1, wherein an outlet of the low-pressure compressor 1 is connected with an inlet of a high-pressure compressor 3, an outlet pipeline of the high-pressure compressor 3 is divided into two paths, one path is connected to a first high-pressure main steam valve 7, the other path is connected to a second high-pressure main steam valve 8, rear pipelines of the first high-pressure main steam valve 7 and the second high-pressure main steam valve 8 are combined into one path and connected with an inlet pipeline of a low-pressure main steam valve 9;
the low-pressure main valve 9 rear pipelines are connected with an emptying pipeline, and the emptying pipeline is sequentially provided with a blow-by valve 10 and a target plate 12.
The low-pressure compressor 1 and the high-pressure compressor 3 are used as energy sources for pipeline purging, and are driven by the motor to convert electric energy into potential energy and heat energy of air.
The end of the emptying pipe is provided with a silencer 13.
The inlet pipeline of the low-pressure compressor 1 is provided with a first filter screen 5, and the inlet pipeline of the high-pressure compressor is provided with a second filter screen 6.
The low-pressure compressor 1 is driven by a first motor 2 in a frequency conversion manner, and the high-pressure compressor 3 is driven by a second motor 4 in a frequency conversion manner.
The blow door 10 is an electric valve and is driven by a motor.
The pipeline connecting the outlet of the low-pressure compressor 1 and the inlet of the high-pressure compressor 3 is a medium-pressure pipeline, and the pipeline from the outlet of the high-pressure compressor 3 to the first high-pressure main valve 7 and the second high-pressure main valve 8 is a high-pressure pipeline.
An air blowing bypass door 11 is arranged on the emptying pipeline, and the air blowing bypass door 11 and the air blowing door 10 are arranged in parallel.
An operation method of a pipeline purging device of a compressed air energy storage power generation system comprises the following steps;
the method comprises the following steps: stage division:
the pipeline purging is divided into three stages, and the machine is stopped for 6-8 hours between every two stages to cool the pipeline, so that oxide skin and attachments can be peeled off conveniently, and the purging effect is enhanced;
step two: purging flow:
when the compressed air reaches the set pressure and temperature, opening the blow-by door 10 to release the air for 30-60 minutes, and then closing the blow-by door 10, wherein the blow-by process is a one-time blow-by process, each stage of blow-by comprises a plurality of blow-by processes, and the interval between the processes is 5-10 minutes;
step three:
the operation steps are as follows: closing the blowing door 10 and opening the blowing bypass door 11; starting the low-pressure compressor 1 and the high-pressure compressor 3 in a variable frequency manner, and controlling the compressed air to be heated and pressurized; after the air medium meets the requirement of the blowing parameter, closing the blowing bypass door 11, and carrying out the operation of a primary blowing process; and the purging work is completed in different processes and stages.
The working medium for purging the pipeline is air.
The utility model has the advantages that:
the utility model discloses a carry out each compressor and pipe-line system in the compressed air energy storage power generation system and arrange in order to face and blow door and bypass door on-off control and sweep the flow, accomplish simple structure, good reliability. The original equipment of the system is adopted to generate high-temperature and high-pressure gas for pipeline purging, extra temporary equipment and pipelines are fewer, the investment cost is low, and the commissioning period is shortened.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein, 1 is the low pressure compressor, 2 is the first motor, 3 is the high pressure compressor, 4 is the second motor, 5 is the first filter screen, 6 is the second filter screen, 7 is first high pressure main throttle, 8 is the second high pressure main throttle, 9 is the low pressure main throttle, 10 is facing the blow door, 11 is facing the blow bypass door, 12 is the target plate, 13 is the muffler.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, a compressed air energy storage power generation system pipeline sweep device, including low pressure compressor 1, first motor 2, high pressure compressor 3, second motor 4, first high pressure owner valve 7, second high pressure owner valve 8, low pressure owner valve 9, first filter screen 5, second filter screen 6, face and blow door 10, face and blow bypass door 11.
The outlet of the low-pressure compressor 1 is connected with the inlet of the high-pressure compressor 3, the outlet pipeline of the high-pressure compressor 3 is divided into two paths, one path is connected to a first high-pressure main valve 7, and the other path is connected to a second high-pressure main valve 8. The rear pipelines of the first high-pressure main valve 7 and the second high-pressure main valve 8 are combined into a whole and connected with the inlet pipeline of the low-pressure main valve 9. The working medium for pipeline purging is air, the low-pressure compressor 1 and the high-pressure compressor 3 are used as energy sources for pipeline purging, the electric energy is converted into potential energy and heat energy of the air by the driving of the motor, and air parameters meet purging requirements through two-time compression.
The low-pressure main valve 9 is connected with an emptying pipeline through a rear pipeline, and a blow-by valve 10, a target plate 12 and a silencer 13 are sequentially arranged on the emptying pipeline. The blow door 10 is an electric valve and is driven by a motor. The target plate 12 is a tool for identifying the purging quality of the system pipeline, high-pressure and high-temperature air drives impurities to impact on a target plate body, and the cleanness degree of the pipeline is judged according to the number and the size of impact marks. A silencer 13 is added at the end of the pipeline to reduce the exhaust pressure and reduce noise pollution.
A first filter screen 5 is arranged on the inlet pipeline of the low-pressure compressor 1, and a second filter screen 6 is arranged on the inlet pipeline of the high-pressure compressor 3. The filter screen is arranged to prevent the damage of the impurities of the front pipeline to the movable blade part of the compressor when the compressor works.
The low-pressure compressor 1 is driven by a first electric motor 2 in a frequency-variable manner, and the high-pressure compressor 3 is driven by a second electric motor 4 in a frequency-variable manner.
The connecting pipeline of the outlet of the low-pressure compressor 1 and the inlet of the high-pressure compressor 3 is a medium-pressure pipeline designed for the system, a cooler and a steam trap on the pipeline are removed, and after the cooler and the steam trap are removed, the openings of the pipeline are butted by using pipes with the same material and pipe diameter.
Pipelines from the outlet of the high-pressure compressor 3 to the first high-pressure main steam valve 7 and the second high-pressure main steam valve 8 are designed into high-pressure pipelines for the system, the gas storage device on the pipelines is removed, and after the gas storage device is removed, the openings of the pipelines are butted by using pipes with the same material and pipe diameter.
An air blowing bypass door 11 is arranged on the emptying pipeline and is arranged in parallel with the air blowing door 10. In the stage of heating and boosting the compressed air, the pipeline system can be heated synchronously, and the pipeline vibration and thermal stress deformation caused by sudden temperature rise are prevented.
The compressed air energy storage power generation system pipeline purging method comprises the following steps:
1. stage division: the pipeline purging is divided into three stages, and the machine is stopped for 6-8 hours between every two stages to cool the pipeline, so that oxide skin and attachments can be peeled off conveniently, and the purging effect is enhanced;
2. purging flow: when the compressed air reaches the set pressure and temperature, the blowing door 10 is opened to release the air for 30-60 minutes, and then the blowing door 10 is closed, which is a primary blowing process. Each purging stage comprises a plurality of purging processes, and the interval between the processes is 5-10 minutes;
3. the operation steps are as follows: closing the blowing door 10 and opening the blowing bypass door 11; starting the low-pressure compressor 1 and the high-pressure compressor 3 in a variable frequency manner, and controlling the compressed air to be heated and pressurized; after the air medium meets the requirement of the blowing parameter, closing the blowing bypass door 11, and carrying out the operation of a primary blowing process; and the purging work is completed in different processes and stages.
Claims (8)
1. The pipeline purging device of the compressed air energy storage power generation system is characterized by comprising a low-pressure compressor (1), wherein an outlet of the low-pressure compressor (1) is connected with an inlet of a high-pressure compressor (3), an outlet pipeline of the high-pressure compressor (3) is divided into two paths, one path is connected to a first high-pressure main steam valve (7), the other path is connected to a second high-pressure main steam valve (8), rear pipelines of the first high-pressure main steam valve (7) and the second high-pressure main steam valve (8) are combined into one path and connected with an inlet pipeline of a low-pressure main steam valve (9);
the low-pressure main valve (9) is connected with an emptying pipeline through a valve rear pipeline, and an air blowing valve (10) and a target plate (12) are sequentially arranged on the emptying pipeline.
2. The compressed air energy-storage power generation system pipeline purging device as claimed in claim 1, wherein the low-pressure compressor (1) and the high-pressure compressor (3) are used as energy sources for pipeline purging, and are driven by an electric motor to convert electric energy into potential energy and heat energy of air.
3. A compressed air energy-storing and power-generating system pipeline purging device as claimed in claim 1, wherein the end of the emptying pipeline is provided with a silencer (13).
4. A compressed air energy-storing and power-generating system pipeline purging device as claimed in claim 1, wherein the inlet pipeline of the low-pressure compressor (1) is provided with a first filter screen (5), and the inlet pipeline of the high-pressure compressor is provided with a second filter screen (6).
5. A compressed air energy-storing and power-generating system pipeline purging device as claimed in claim 1, wherein the low-pressure compressor (1) is driven by the first electric motor (2) in a frequency conversion manner, and the high-pressure compressor (3) is driven by the second electric motor (4) in a frequency conversion manner.
6. The compressed air energy-storage power generation system pipeline purging device as claimed in claim 1, wherein the blow door (10) is an electric valve and is driven by a motor.
7. The pipeline purging device for the compressed air energy-storage power generation system as claimed in claim 1, wherein the connecting pipeline between the outlet of the low-pressure compressor (1) and the inlet of the high-pressure compressor (3) is a medium-pressure pipeline, and the pipelines from the outlet of the high-pressure compressor (3) to the first high-pressure main valve (7) and the second high-pressure main valve (8) are high-pressure pipelines.
8. The compressed air energy storage and power generation system pipeline purging device as claimed in claim 1, wherein a blowing bypass door (11) is arranged on the emptying pipeline, and the blowing bypass door (11) and the blowing door (10) are arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120244396.XU CN214464750U (en) | 2021-01-28 | 2021-01-28 | Compressed air energy storage power generation system pipeline sweeps device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120244396.XU CN214464750U (en) | 2021-01-28 | 2021-01-28 | Compressed air energy storage power generation system pipeline sweeps device |
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| Publication Number | Publication Date |
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| CN214464750U true CN214464750U (en) | 2021-10-22 |
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| CN202120244396.XU Active CN214464750U (en) | 2021-01-28 | 2021-01-28 | Compressed air energy storage power generation system pipeline sweeps device |
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2021
- 2021-01-28 CN CN202120244396.XU patent/CN214464750U/en active Active
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