CN218584542U - Hydraulic pressure test system of coal-fired boiler - Google Patents
Hydraulic pressure test system of coal-fired boiler Download PDFInfo
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- CN218584542U CN218584542U CN202222494255.0U CN202222494255U CN218584542U CN 218584542 U CN218584542 U CN 218584542U CN 202222494255 U CN202222494255 U CN 202222494255U CN 218584542 U CN218584542 U CN 218584542U
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Abstract
The utility model discloses a hydraulic pressure test system of a coal-fired boiler, which comprises a water supply system and a reheater system; a drain pipe of the water supply system is communicated with a drain pipe of the reheater system through a water pipe, and a drain pipe is connected to the water pipe; a first valve is arranged on the drain pipe; at least two second valves are arranged on the water discharge pipe; a third valve is arranged on the water discharge pipe. The utility model has the advantages of: the utility model has simple connection structure and easy realization, reduces the time consumption of the whole hydraulic test of the boiler to 7h, greatly shortens the whole construction period of the hydraulic test, thereby being capable of checking the maintenance quality of the heated surface of the boiler as soon as possible, ensuring the starting time of the boiler and improving the production efficiency of a power plant; the recycling of water resources is realized, and the waste of the water resources is reduced.
Description
The technical field is as follows:
the utility model relates to a water pressure test system, in particular to coal fired boiler's water pressure test system.
Background art:
the boiler in the power plant is used for converting the heat energy generated by burning coal into steam with kinetic energy to drive a turbine generator to generate electricity; therefore, the boiler heating surface system is required to be subjected to an integral hydraulic test after being installed or overhauled, and the sealing performance of the boiler heating surface system is ensured; the patent with the application number of CN201821103778.5 discloses a 660MW tangential firing supercritical boiler for burning Xinjiang east coal, and discloses a structure of the boiler, namely a heating surface of the boiler mainly comprises an economizer system, a water wall system, a superheater system and a reheater system; when the boiler needs to be overhauled and stops running, water in the boiler needs to be discharged through a drainage pipe of a water supply system; when a hydraulic test is carried out after maintenance, an emptying pipe of a separating screen superheater in a superheater system is required to be communicated with an emptying pipe of a final reheater in a reheater system, then water is injected into the communicated economizer system, water wall system and superheater system through a water supply system of a boiler, the economizer system, the water wall system and the superheater system are filled with water and then are continuously injected with water, and the water enters the final reheater and the low-temperature reheater of the reheater system through the emptying pipe to carry out the hydraulic test; after the hydraulic test is finished, discharging the reheater system to a trench through a drain pipe; however, the following problems exist in the above manner: 1. after the economizer system, the water wall system and the superheater system are filled, water can be injected into the reheater system, and meanwhile, as the volume of the reheater system is large and the pipeline of an emptying pipe for water injection in a hydraulic test is thin, the whole hydraulic test of the boiler needs about 19 hours, the consumed time is long, the starting time of the boiler is influenced, and the production efficiency of a power plant is reduced; 2. after the reheater system has performed the hydrostatic test, the water is directly discharged to the trench through the drain pipe, causing waste of water resources.
The utility model has the following contents:
an object of the utility model is to provide a connection structure is simple, reduces the hydrostatic test time, and the coal fired boiler's of water economy resource hydrostatic test system.
The utility model discloses implement by following technical scheme: the patent aims to provide a hydraulic pressure test system of a coal-fired boiler, which comprises a water supply system and a reheater system; a drain pipe of the water supply system is communicated with a drain pipe of the reheater system through a water pipe, and a drain pipe is connected to the water pipe; a first valve is arranged on the drain pipe; at least two second valves are arranged on the water drain pipe; and a third valve is arranged on the water drain pipe.
Furthermore, the water outlet end of the water discharge pipe is communicated with the water inlet of an atmospheric flash tank of the starting system.
The utility model has the advantages that: 1. the utility model discloses connection structure is simple, easy to realize, need not to connect the evacuation pipe of separating screen superheater and the evacuation pipe of final stage reheater, open first valve and second valve, close the third valve, water supply system is when giving economizer system, water-cooling wall system and superheater system water injection, carry out the water injection for the reheater system, consequently whole water pressure test's of boiler consuming time reduces to 7h, great reduction water pressure test's whole time limit for a project, thereby can be as fast inspection boiler heating surface's maintenance quality, the start-up time of boiler has been guaranteed, the production efficiency of power plant has been improved; 2. after the hydrostatic test is completed, the first valve is closed, the second valve and the third valve are opened, and water in the reheater system is recycled to the atmosphere flash tank in the starting system, so that the recycling of water resources is realized, and the waste of water resources is reduced.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural view of a boiler.
The system comprises a water supply system 1, a drainage pipe 101, a reheater system 2, a drainage pipe 201, a water delivery pipe 3, a water discharge pipe 4, a first valve 5, a second valve 6, a third valve 7, an atmospheric flash tank 8, an economizer system 9, a water wall system 10 and a superheater system 11.
The specific implementation mode is as follows:
as shown in fig. 1-2, a hydraulic pressure test system for a coal-fired boiler includes a feedwater system 1 and a reheater system 2; a drain pipe 101 of the water supply system 1 is communicated with a drain pipe 201 of the reheater system 2 through a water pipe 3, and a drain pipe 4 is connected to the water pipe 3; a first valve 5 is arranged on the drain pipe 101; the drain pipe 201 is provided with at least two second valves 6, because the pressure of the economizer system 9, the water wall system 10 and the superheater system 11 is much higher than that of the reheater system 2 in the operation process of the boiler, at least two second valves 6 are required to be arranged, and the situation that the reheater system 2 is subjected to overpressure due to untight valves, so that the reheater system 2 is damaged by a heating surface pipe is avoided; a third valve 7 is arranged on the water discharge pipe 4, and the water outlet end of the water discharge pipe 4 is communicated with the water inlet of an atmospheric flash tank 8 of the starting system.
The working principle is as follows: the water supply system 1 is communicated with the water inlet end of the economizer system 9, and the water supply system 1 injects water into the communicated economizer system 9, the water wall system 10 and the superheater system 11; the first valve 5 and the second valve 6 are opened simultaneously, the water supply system 1 injects water into the reheater system 2, after the water injection is completed, the first valve 5 and the second valve 6 are closed, the hydraulic test is carried out, the time consumption of the hydraulic test in the whole process of the boiler is reduced to 7 hours, the whole construction period of the hydraulic test is greatly shortened, the overhaul quality of the heating surface of the boiler can be tested as soon as possible, the starting time of the boiler is ensured, and the production efficiency of a power plant is improved; after the experiment finishes, open second valve 6 and third valve 7, the water in the reheater system 2 has realized the recycle of water resource in the atmospheric flash tank 8 of the 4 flows to the start-up system in of bleeder line, has reduced the waste of water resource, the utility model discloses connection structure is simple, easily realizes.
The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. A hydraulic pressure test system of a coal-fired boiler is characterized by comprising a water supply system and a reheater system; a drain pipe of the water supply system is communicated with a drain pipe of the reheater system through a water pipe, and a drain pipe is connected to the water pipe; a first valve is arranged on the drain pipe; at least two second valves are arranged on the water discharge pipe; and a third valve is arranged on the water drain pipe.
2. The hydraulic test system of the coal-fired boiler according to claim 1, wherein the water outlet end of the water discharge pipe is communicated with the water inlet of an atmospheric flash tank of the starting system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222494255.0U CN218584542U (en) | 2022-09-20 | 2022-09-20 | Hydraulic pressure test system of coal-fired boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222494255.0U CN218584542U (en) | 2022-09-20 | 2022-09-20 | Hydraulic pressure test system of coal-fired boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218584542U true CN218584542U (en) | 2023-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222494255.0U Active CN218584542U (en) | 2022-09-20 | 2022-09-20 | Hydraulic pressure test system of coal-fired boiler |
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| CN (1) | CN218584542U (en) |
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2022
- 2022-09-20 CN CN202222494255.0U patent/CN218584542U/en active Active
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