CN217025351U - Automatic N that fills of power plant heat exchanger2Maintenance device - Google Patents
Automatic N that fills of power plant heat exchanger2Maintenance device Download PDFInfo
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- CN217025351U CN217025351U CN202221104251.0U CN202221104251U CN217025351U CN 217025351 U CN217025351 U CN 217025351U CN 202221104251 U CN202221104251 U CN 202221104251U CN 217025351 U CN217025351 U CN 217025351U
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Abstract
The utility model discloses an automatic N charging device for a heat exchanger of a power plant, and belongs to the technical field of pipeline structures of nitrogen making equipment2The maintenance device comprises a gas transmission main pipeline, wherein a miscellaneous gas filter, a nitrogen making machine, a gas storage tank, a flowmeter, an electric control gas supply valve and an electric control pressure regulating valve are sequentially arranged on the gas transmission main pipeline along the conveying direction, and the tail end of the gas transmission main pipeline is connected to a N supply pipe2A main pipe; the nitrogen generator is provided with a humidity meter before air inlet, and the gas storage tank is provided with a purity meter for supplying N2The main pipe is provided with a pressure sensor, an electric control air supply valve and an electric control valveThe pressure control and regulation valve, the hygrometer, the purity meter and the pressure sensor are respectively electrically connected with the controller, and the heat exchanger of the power plant is automatically charged with N2The maintenance device has a monitoring function, the equipment maintenance condition can be monitored in place, the tightness and the maintenance condition of the heat exchanger can be reflected, and the nitrogen cylinder is not required to be used, so that the safety risk of manual carrying, loading, unloading, storage and removal is avoided.
Description
Technical Field
The utility model relates to the technical field of pipeline structures of nitrogen making equipment, in particular to an automatic N charging device for a heat exchanger of a power plant2A maintenance device.
Background
In recent years, with the rapid development of clean renewable energy in China, the occupation ratio of the clean renewable energy in the whole power grid is larger and larger, the number of hours of utilization of a conventional energy generating set is lower and lower, particularly, the number of times of adjustment and stop of a thermal power generating set of 300MW and below is increased, the maintenance of the set is involved during the set standby period, a heater, a superheater, an economizer and the like are arranged on the boiler side of the thermal power generating set, a high-temperature heater, a low-temperature heater and other steam heat exchange equipment are arranged on the steam turbine side and need to be charged with N2And (5) maintaining.
The prior nitrogen filling maintenance all needs to purchase N2The bottles are manually transported to a nitrogen filling frame for loading and unloading the nitrogen bottles, and one unit consumes 30 bottles of N per day2Bottles, which not only increase the maintenance costs of the plant, but can lead to N in the event of special conditions2The bottle supply is interrupted, the maintenance of the unit is influenced, the existing maintenance device usually has no monitoring function, the equipment maintenance condition is difficult to monitor in place, the manual operation amount is large, and the N of full bottles2The gas is high-pressure liquid nitrogen, the pressure is usually 13Mpa, and certain safety risks exist in handling, loading, unloading, storing and operating.
Based on the method, the utility model designs the automatic N charging device for the heat exchanger of the power plant2The maintenance device is used for solving the problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an automatic N that fills of power plant heat exchanger2The maintenance device is used for solving the technical problem.
In order to realize the purpose, the utility model provides the following technical scheme: automatic N that fills of power plant heat exchanger2The maintenance device comprises a gas transmission main pipeline, wherein a miscellaneous gas filter, a nitrogen making machine, a gas storage tank, a flowmeter, an electric control gas supply valve and an electric control pressure regulating valve are sequentially arranged on the gas transmission main pipeline along the conveying direction, and the tail end of the gas transmission main pipeline is connected to a supply N2A main pipe; the nitrogen generator is characterized by further comprising a controller, wherein a humidity meter is arranged before air is fed into the nitrogen generator, a purity meter is arranged on the air storage tank, and N is supplied2The main pipe is provided with a pressure sensor, and the electric control air supply valve, the electric control pressure regulating valve, the hygrometer, the purity meter and the pressure sensor are respectively electrically connected with the controller.
Preferably, the miscellaneous gas filter is provided with a manual drain valve.
Preferably, the air storage tank is provided with an automatic drain valve.
Preferably, the gas transmission main pipeline is provided with a gas supply bypass manual door and a pressure regulating bypass manual door corresponding to the electric control gas supply valve and the electric control pressure regulating valve respectively.
Preferably, the head end and the tail end of the gas transmission main pipeline are respectively provided with a gas inlet manual main valve and a gas outlet manual main valve.
Compared with the prior art, utility model's beneficial effect does:
the utility model discloses an automatic N charging device for a heat exchanger of a power plant2The maintenance device has a monitoring function, the equipment maintenance condition can be monitored in place, the tightness and the maintenance condition of the heat exchanger can be reflected, and the nitrogen cylinder is not required to be used, so that the safety risk of manual carrying, loading, unloading, storage and removal is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is the heat exchange of the original power plantAutomatic N-charging device2A schematic view of the maintenance pipeline structure;
FIG. 2 is a diagram illustrating the automatic N charging of the heat exchanger of the power plant according to the present invention2Schematic diagram of maintenance pipeline structure.
In the drawings, the components represented by the respective reference numerals are listed below:
1-main gas transmission pipeline, 2-miscellaneous gas filter, 3-nitrogen making machine, 4-gas storage tank, 5-flowmeter, 6-electric control gas supply valve, 7-electric control pressure regulating valve and 8-N supply2The system comprises a main pipe, 9-a controller, 10-a hygrograph, 11-a purity meter, 12-a pressure sensor, 13-a manual drain valve, 14-an automatic drain valve, 15-an air supply bypass manual valve, 16-a pressure regulating bypass manual valve, 17-an air inlet manual main valve and 18-an air outlet manual main valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art without making creative efforts based on the embodiments in the utility model belong to the protection scope of the utility model.
Referring to fig. 2, the utility model provides a technical solution: automatic N that fills of power plant heat exchanger2The maintenance device comprises a gas transmission main pipeline 1, wherein a miscellaneous gas filter 2, a nitrogen making machine 3, a gas storage tank 4, a flowmeter 5, an electric control gas supply valve 6 and an electric control pressure regulating valve 7 are sequentially arranged on the gas transmission main pipeline 1 along the conveying direction, and the tail end of the gas transmission main pipeline 1 is connected to a supply N2A main pipe 8; the nitrogen generator also comprises a controller 9, a humidity meter 10 is arranged before air is fed into the nitrogen generator 3, and a purity meter 11 is arranged on the air storage tank 4 for supplying N2The main pipe 8 is provided with a pressure sensor 12, and the electric control air supply valve 6, the electric control pressure regulating valve 7, the humidity meter 10, the purity meter 11 and the pressure sensor 12 are respectively electrically connected with the controller 9.
When the device works, foreign air and miscellaneous gas are input from the left end of the gas transmission main pipeline 1, impurities in the air are filtered through the miscellaneous gas filter 2, the miscellaneous gas filter 2 is provided with a manual drain valve 13, and water vapor is discharged through the manual drain valve 13The filtered air enters the nitrogen making machine 3, the humidity meter 10 before the air enters the nitrogen making machine 3 can detect whether the humidity of the air enters the nitrogen making machine meets the air inlet requirement of nitrogen making, and the air is processed by the nitrogen making machine 3 to generate N2，N2Store in gas holder 4, the purity appearance 11 on the gas holder 4 is used for detecting gas purity, is provided with pressure sensor on the gas holder 4, and nitrogen generator 3 passes through the sensor and detects 4 internal pressure values of gas holder to perception reserves hold full auto-stop, is provided with automatic trap 14 on the gas holder 4 for automatic discharge nitrogen making steam, the N in the gas holder 42Further, the main gas transmission pipeline 1 passes through a flowmeter 5, an electric control gas supply valve 6 and an electric control pressure regulating valve 7, the flowmeter 5 is used for counting gas supply flow, the electric control gas supply valve 6 and the electric control pressure regulating valve 7 are respectively used for automatically controlling gas supply and gas supply pressure, and finally N is obtained2Is sent to supply N2The main pipe 8, the gas transmission main pipeline 1 are respectively provided with a gas supply bypass manual door 15 and a pressure regulating bypass manual door 16 corresponding to the electric control gas supply valve 6 and the electric control pressure regulating valve 7, and the gas transmission main pipeline 1 is manually controlled to be conducted during debugging or obstacle clearance, and the head end and the tail end of the gas transmission main pipeline 1 are respectively provided with a gas inlet manual main valve 17 and a gas outlet manual main valve 18, which are used for manually switching the conduction of the gas transmission main pipeline 1.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
In the present application, unless otherwise explicitly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be understood broadly, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; the term "connected" may refer to a direct connection, an indirect connection through an intermediate, a connection between two elements or an interaction relationship between two elements, and unless otherwise specifically defined, the term should be understood as having a specific meaning in the present application by those skilled in the art.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. Automatic N that fills of power plant heat exchanger2The maintenance device is characterized in that: the nitrogen-making device comprises a gas transmission main pipeline (1), wherein a miscellaneous gas filter (2), a nitrogen making machine (3), a gas storage tank (4), a flowmeter (5), an electric control gas supply valve (6) and an electric control pressure regulating valve (7) are sequentially arranged on the gas transmission main pipeline (1) along the conveying direction, and the tail end of the gas transmission main pipeline (1) is connected to a supply N2A main tube (8); still include controller (9), be provided with before nitrogen generator (3) admit air hygrometer (10), be provided with purity appearance (11) on gas holder (4), supply N2And a pressure sensor (12) is arranged on the main pipe (8), and the electric control air supply valve (6), the electric control pressure regulating valve (7), the hygrometer (10), the purity meter (11) and the pressure sensor (12) are respectively electrically connected with the controller (9).
2. The power plant heat exchanger automatic N charging system of claim 12Maintenance device, its characterized in that: and a manual drain valve (13) is arranged on the miscellaneous gas filter (2).
3. The power plant heat exchanger automatic N charging system of claim 12Maintenance device, its characterized in that: the air storage tank (4) is provided with an automatic drain valve (14).
4. The power plant heat exchanger automatic N charging system of claim 12Maintenance device, characterized in thatThe method comprises the following steps: and the gas transmission main pipeline (1) is provided with a gas supply bypass manual door (15) and a pressure regulating bypass manual door (16) corresponding to the electric control gas supply valve (6) and the electric control pressure regulating valve (7) respectively.
5. The power plant heat exchanger automatic N charging system of claim 12The maintenance device is characterized in that: the head end and the tail end of the gas transmission main pipeline (1) are respectively provided with a gas inlet manual main valve (17) and a gas outlet manual main valve (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221104251.0U CN217025351U (en) | 2022-05-10 | 2022-05-10 | Automatic N that fills of power plant heat exchanger2Maintenance device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221104251.0U CN217025351U (en) | 2022-05-10 | 2022-05-10 | Automatic N that fills of power plant heat exchanger2Maintenance device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217025351U true CN217025351U (en) | 2022-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221104251.0U Active CN217025351U (en) | 2022-05-10 | 2022-05-10 | Automatic N that fills of power plant heat exchanger2Maintenance device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217025351U (en) |
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2022
- 2022-05-10 CN CN202221104251.0U patent/CN217025351U/en active Active
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