CN218884759U - Online cleaning device for heat exchanger of nuclear power station - Google Patents
Online cleaning device for heat exchanger of nuclear power station Download PDFInfo
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- CN218884759U CN218884759U CN202223112862.2U CN202223112862U CN218884759U CN 218884759 U CN218884759 U CN 218884759U CN 202223112862 U CN202223112862 U CN 202223112862U CN 218884759 U CN218884759 U CN 218884759U
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Abstract
The utility model relates to a nuclear power station heat exchanger online cleaning device, including the forward washing pipeline, the reverse cleaning pipeline, the backward flow washs the pipeline and washs the water tank, wash the water tank, forward washing pipeline and heat exchanger connect gradually, wash the water tank, reverse cleaning pipeline and heat exchanger connect gradually, the backward flow washs pipeline one end and inserts heat exchanger's first end and second end respectively, the other end is connected with the washing water tank, it is used for storing the washing liquid that washs heat exchanger to wash the water tank, the forward washing pipeline is used for controlling the washing liquid from wasing the first end of water tank flow direction heat exchanger, the reverse cleaning pipeline is used for controlling the washing liquid from wasing the second end of water tank flow direction heat exchanger, the backward flow washs the washing liquid backward to the washing water tank that the pipeline is used for controlling flow direction heat exchanger, in order to let the washing liquid carry out forward washing and reverse cleaning to heat exchanger. The device can clean the heat exchanger in different directions, washes dirt on the heat exchanger from different directions, and improves the cleaning effect.
Description
Technical Field
The utility model relates to a nuclear power station equipment washs the field, and more specifically says, relates to a nuclear power station heat exchanger online cleaning device.
Background
In the operation process of the heat exchanger, oil sludge, oil dirt, water scale and other deposits which influence the operation of the heat exchanger can be formed when an oil medium on an oil side flows through metal of a shell and tube of the heat exchanger, and the oil dirt and the water scale are gradually deposited on the surface of the metal in serious conditions, particularly in a dead angle area with low flow rate, so that the heat exchange efficiency of the heat exchanger is gradually reduced, and the heat exchange effect of equipment is seriously influenced. Furthermore, the presence of deposits can also cause corrosion of the heat exchanger, localized corrosion being an important factor in perforating the heat exchanger, and therefore, the presence of deposits not only affects the operation of the heat exchanger, but is more likely to damage the heat exchanger, creating a hazard.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to prior art's above-mentioned defect, a nuclear power station heat exchanger online cleaning device is provided.
The utility model provides a technical scheme that its technical problem adopted is: the on-line cleaning device for the heat exchanger of the nuclear power station comprises a forward cleaning pipeline, a reverse cleaning pipeline, a backflow cleaning pipeline and a cleaning water tank;
one end of the forward cleaning pipeline is connected with the cleaning water tank, and the other end of the forward cleaning pipeline is connected with the first end of the heat exchanger;
one end of the reverse cleaning pipeline is connected with the cleaning water tank, and the other end of the reverse cleaning pipeline is connected with the second end of the heat exchanger;
one end of the backflow cleaning pipeline is respectively connected to the first end and the second end of the heat exchanger, and the other end of the backflow cleaning pipeline is connected with the cleaning water tank;
the cleaning water tank is used for storing cleaning liquid for cleaning the heat exchanger;
the forward cleaning pipeline is used for controlling the cleaning liquid to flow from the cleaning water tank to the first end of the heat exchanger;
the reverse cleaning pipeline is used for controlling the cleaning liquid to flow from the cleaning water tank to the second end of the heat exchanger;
the backflow cleaning pipeline is used for controlling the cleaning liquid flowing to the heat exchanger to flow back to the cleaning water tank, so that the cleaning liquid can carry out forward cleaning and reverse cleaning on the heat exchanger.
In some embodiments, the forward purge line is provided with a first valve for controlling the flow of the purge liquid.
In some embodiments, the reverse purge line is provided with a second valve for controlling the flow of the purge liquid.
In some embodiments, the return purge line comprises a first return line, a second return line;
one end of the first return pipeline is connected to the second end of the heat exchanger, and the other end of the first return pipeline is connected with the cleaning water tank and used for controlling the cleaning liquid flowing to the heat exchanger from the forward cleaning pipeline to flow back to the cleaning water tank so as to perform forward cleaning on the heat exchanger;
one end of the second return pipeline is connected to the first end of the heat exchanger, and the other end of the second return pipeline is connected with the cleaning water tank and used for controlling the cleaning liquid flowing to the heat exchanger from the reverse cleaning pipeline to flow back to the cleaning water tank so as to reversely clean the heat exchanger.
In some embodiments, the washing water tank is provided with a forward washing valve, a reverse washing valve and a plurality of water supply valves, and the washing apparatus is further provided with a plurality of main washing lines connected to the water supply valves;
the forward cleaning valve is connected with the first return pipeline to control the cleaning liquid to flow from the first return pipeline to the cleaning water tank, and the reverse cleaning valve is connected with the second return pipeline to control the cleaning liquid to flow from the second return pipeline to the cleaning water tank;
the main cleaning pipeline is connected to the forward cleaning pipeline and the reverse cleaning pipeline so as to control the cleaning liquid to flow from the cleaning water tank to the forward cleaning pipeline and the reverse cleaning pipeline respectively.
In some embodiments, a cleaning pump for driving the cleaning liquid to flow is disposed on the main cleaning pipeline.
In some embodiments, the wash tank is further provided with a filter to filter wash liquid flowing from the heat exchanger to the wash tank.
In some embodiments, the cleaning device further comprises a compression testing assembly connected with the heat exchanger to test the tightness of the heat exchanger;
the pressurizing test assembly comprises a pressurizing water tank, a pressurizing pump and a pressurizing valve, the pressurizing water tank is used for storing water for pressurizing test, the pressurizing pump is used for pumping water in the pressurizing water tank to the heat exchanger so as to test the sealing performance of the heat exchanger, and the pressurizing valve is used for controlling the flow of the water for pressurizing test.
In some embodiments, the cleaning device further includes a pressurizing assembly connected to the forward cleaning pipeline and the reverse cleaning pipeline, and the pressurizing assembly is used for pressurizing the cleaning liquid in the forward cleaning pipeline and the reverse cleaning pipeline, so as to improve the cleaning effect of the cleaning liquid.
In some embodiments, the pressurizing assembly comprises a vibrating part and an inflating part, the vibrating part is used for vibrating the cleaning liquid to generate bubbles, the inflating part is used for inflating compressed air into the cleaning liquid to generate bubbles in the cleaning liquid, and the bubbles are broken to enable the cleaning liquid to flow irregularly, so that the cleaning effect of the cleaning liquid is improved.
Implement the utility model discloses a nuclear power station heat exchanger online cleaning device has following beneficial effect: this device can carry out the washing of equidirectional not to heat exchanger, wash the dirt on the heat exchanger from the equidirectional not, make the dirt on the heat exchanger drop from heat exchanger more easily, the cleaning performance has been improved, avoid the dirt to influence heat exchanger's heat exchange efficiency, the dirt has also been avoided simultaneously and has aroused heat exchanger's corruption, the device can also test heat exchanger's leakproofness simultaneously, avoid making heat exchanger's heat exchange efficiency decline because heat exchanger's leakproofness loses, also avoided causing danger because heat exchanger's leakproofness loses, security when with this improvement heat exchanger moves.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
FIG. 1 is a schematic diagram of an on-line cleaning device for a heat exchanger of a nuclear power plant according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating the on-line cleaning apparatus for heat exchanger of nuclear power plant according to the embodiment of the present invention;
FIG. 3 is a schematic diagram of an embodiment of the present invention illustrating a reverse cleaning of an on-line cleaning apparatus for a nuclear power plant heat exchanger;
FIG. 4 is a schematic view of an on-line cleaning device for a heat exchanger of a nuclear power plant according to an embodiment of the present invention during a pressure test;
FIG. 5 is a schematic view of a valve, a purge pump, and a pressure test assembly in an embodiment of the invention;
FIG. 6 is a front view of a valve, purge pump and a pressure test assembly in an embodiment of the invention;
fig. 7 is a side view of a valve, purge pump and a compression test assembly in an embodiment of the invention;
fig. 8 is a top view of a valve, purge pump and a pressure test assembly in an embodiment of the invention;
FIG. 9 is a schematic view of a cleaning tank in an embodiment of the present invention;
fig. 10 is a front view of a cleaning water tank according to an embodiment of the present invention;
fig. 11 is a side view of a cleaning tank in an embodiment of the present invention;
fig. 12 is a plan view of the cleaning water tank according to the embodiment of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, the embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 to 12 show the utility model discloses nuclear power station heat exchanger online cleaning device in some embodiments, the device can be used to carry out forward to heat exchanger 5, the backwash, it can be including forward washing pipeline 1, reverse washing pipeline 2, backward flow washs pipeline 3 and washs water tank 4, forward washing pipeline 1 one end is connected with wasing water tank 4, the other end is connected with heat exchanger 5's first end, 2 one end of reverse washing pipeline is connected with wasing water tank 4, the other end is connected with heat exchanger 5's second end, 3 one end of backward flow washing pipeline is inserted heat exchanger 5's first end and second end respectively, it is used for storing the washing liquid of wasing heat exchanger 5 to wash water tank 4, forward washing pipeline 1 is used for controlling the washing liquid from wasing the first end that water tank 4 flowed to heat exchanger 5, backward washing pipeline 2 is used for controlling the washing liquid from wasing the second end that water tank 4 flowed to heat exchanger 5.
That is, the forward cleaning pipeline 1 and the reverse cleaning pipeline 2 make the flow direction of the cleaning liquid in the heat exchanger 5 opposite, when the cleaning process is performed, when the cleaning liquid passes through the forward cleaning pipeline 1, the cleaning liquid flows from the first end to the second end of the heat exchanger 5, when the cleaning liquid passes through the reverse cleaning pipeline 2, the cleaning liquid flows from the second end to the first end of the heat exchanger 5, dirt in the heat exchanger 5 is impacted by the cleaning liquid in the opposite direction, so that the dirt can more easily fall off from the heat exchanger 5, and the cleaning effect is further improved.
Therefore, the device can clean the heat exchanger 5 in different directions and wash dirt on the heat exchanger 5 from different directions, so that the dirt on the heat exchanger 5 can fall off from the heat exchanger 5 more easily, the influence of the dirt on the heat exchange efficiency of the heat exchanger 5 is avoided, meanwhile, the corrosion of the heat exchanger 5 caused by the accumulation of the dirt is also avoided, and the safety in the operation of the heat exchanger 5 is improved.
The cleaning device further comprises a main cleaning pipeline 6 in some embodiments, one end of the main cleaning pipeline 6 is connected with the cleaning water tank 4, the other end of the main cleaning pipeline is respectively connected with the forward cleaning pipeline 1 and the reverse cleaning pipeline 2, the cleaning liquid flows to the main cleaning pipeline 6 from the cleaning water tank 4, and then flows to the forward cleaning pipeline 1 and the reverse cleaning pipeline 2 from the main cleaning pipeline 6 respectively, so that the cleaning liquid is controlled to flow to the forward cleaning pipeline 1 and the reverse cleaning pipeline 2 from the cleaning water tank 4.
Furthermore, the cleaning device comprises two or more main cleaning pipelines 6, so that the flow of the cleaning liquid is increased, the cleaning efficiency is improved, and the condition that the whole cleaning device cannot operate due to the fact that one pipeline is blocked is avoided.
The cleaning device further comprises a pressure test assembly 7 in some embodiments, the pressure test assembly 7 is connected with the heat exchanger 5, the tightness of the heat exchanger 5 needs to be tested after the heat exchanger 5 is cleaned, and then the pressure test assembly 6 is used for testing, so that the good tightness of the heat exchanger 5 is ensured, and the heat exchange efficiency of the heat exchanger 5 is prevented from being influenced or danger is avoided due to the loss of the tightness of the heat exchanger 5.
The cleaning device further comprises a cleaning pressurization component 8 in some embodiments, the cleaning pressurization component 8 is connected to the forward cleaning pipeline 1 and the reverse cleaning pipeline 2, when cleaning liquid flows in the forward cleaning pipeline 1 and the reverse cleaning pipeline 2, the cleaning liquid in the pipelines can be pressurized by the cleaning pressurization component 8, a large number of small bubbles are generated in the cleaning liquid, the bubbles can be broken in the high-speed flowing process, energy can be generated when the large number of bubbles are burst, the cleaning liquid generates an irregular and irregular surge flow phenomenon, the impact force on dirt in the heat exchanger 5 is increased, so that the dirt can be more easily dropped from the heat exchanger 5 and dropped into the cleaning liquid, and the cleaning liquid wraps the dirt and flows out of the heat exchanger 5, so that the heat exchanger 5 is cleaned.
The cleaning pressurization assembly 8 comprises a vibrating part 81 and an inflating part 82 in some embodiments, the vibrating part 81 and the inflating part 82 are connected into the forward cleaning pipeline 1 and the reverse cleaning pipeline 2, the vibrating part 81 is used for vibrating the cleaning liquid to generate bubbles, the inflating part 82 is used for inflating compressed air into the cleaning liquid to generate bubbles in the cleaning liquid, the bubbles break to enable the cleaning liquid to flow irregularly, and the cleaning force of the cleaning liquid on the heat exchanger 5 is enhanced to improve the cleaning effect.
The forward cleaning circuit 1 is in some embodiments provided with a first valve 11 for controlling the flow of cleaning fluid from the forward cleaning circuit 1 to the first end of the heat exchanger 5, and when forward cleaning is to be performed, cleaning fluid flows from the cleaning tank 4 through the main cleaning circuit 6 and the forward cleaning circuit 1, and then the first valve 11 is opened to allow cleaning fluid to flow from the forward cleaning circuit 1 to the first end of the heat exchanger 5.
Furthermore, be equipped with two or more than two positive washing pipeline 1 in the belt cleaning device to this increases the flow that carries out positive abluent washing liquid to heat exchanger 5, also avoids appearing the unable positive abluent condition of carrying on when a positive washing pipeline 1 damages simultaneously.
The reverse cleaning circuit 2 is in some embodiments provided with a second valve 21 for controlling the flow of cleaning liquid from the reverse cleaning circuit 2 to the second end of the heat exchanger 5, when reverse cleaning is to be performed, cleaning liquid flows from the cleaning water tank 4 through the main cleaning circuit 6 and the reverse cleaning circuit 2, and then the second valve 21 is opened to allow cleaning liquid to flow from the reverse cleaning circuit 2 to the second end of the heat exchanger 5.
Furthermore, two or more reverse cleaning pipelines 2 are arranged in the cleaning device, so that the flow of cleaning liquid for performing reverse cleaning on the heat exchanger 5 is increased, and the condition that reverse cleaning cannot be performed when one reverse cleaning pipeline 2 is damaged is avoided.
The return cleaning line 3 in some embodiments comprises a first return line 31 and a second return line 32, wherein one end of the first return line 31 is connected to the second end of the heat exchanger 5, and the other end is connected to the cleaning water tank 4, when the cleaning liquid flows from the forward cleaning line 1 to the first end of the heat exchanger 5, the cleaning liquid flows through the heat exchanger 5 to the second end of the heat exchanger 5, in the process, the heat exchanger 5 is positively cleaned, and after the cleaning liquid positively cleans the heat exchanger 5, the cleaning liquid flows to the first return line 31 connected to the second end of the heat exchanger 5, then flows through the first return line 31, and finally flows back to the cleaning water tank 4 again.
One end of the second return line 32 is connected to the first end of the heat exchanger 5, and the other end is connected to the cleaning water tank 4, for controlling the cleaning liquid flowing from the reverse cleaning line 2 to the heat exchanger 5 to flow back to the cleaning water tank 4, when the cleaning liquid flows from the reverse cleaning line 2 to the second end of the heat exchanger 5, the cleaning liquid immediately flows through the heat exchanger 5 to the first end of the heat exchanger 5, in the process, the heat exchanger 5 is reversely flushed, and after the cleaning liquid reversely flushes the heat exchanger 5, the cleaning liquid flows to the second return line 32 connected to the first end of the heat exchanger 5, then flows through the second return line 32, and finally flows back to the cleaning water tank 4 again.
The cleaning water tank 4 is provided with one or more forward cleaning valves 41, reverse cleaning valves 42 and water supply valves 43 in some embodiments, the forward cleaning valves 41 are connected to the first return line 31 for controlling the cleaning liquid after performing forward cleaning on the heat exchanger 5 to flow from the first return line 31 to the cleaning water tank 4, the reverse cleaning valves 42 are connected to the second return line 32 for controlling the cleaning liquid after performing reverse cleaning on the heat exchanger 5 to flow from the second return line 32 to the cleaning water tank 4, one end of each main cleaning line 6 is respectively connected to one water supply valve 43, and the other end thereof is connected to the forward cleaning line 1 and the reverse cleaning line 2 for controlling the cleaning liquid in the cleaning water tank 4 to be conveyed to the forward cleaning line 1 and the reverse cleaning line 2.
Furthermore, each main cleaning pipeline 6 is provided with a cleaning pump 61 for driving the cleaning liquid to flow in the main transmission pipeline and accelerating the process of the cleaning liquid flowing from the cleaning water tank 4 to the forward cleaning pipeline 1 and the backward cleaning pipeline 2, so as to improve the cleaning efficiency, and the pumping efficiency of each cleaning pump 61 is 100m 3 And/h, thereby increasing the flow speed of the cleaning liquid as much as possible and further improving the cleaning efficiency.
In other embodiments, the cleaning pump 61 may be disposed in the cleaning water tank 4, so as to directly drive the cleaning liquid in the cleaning water tank 4 to flow to the main cleaning pipeline 6, thereby simplifying the structural design of the cleaning device.
The cleaning water tank 4 is further provided with a filtering element 44 in some embodiments, which is used for filtering the cleaning liquid flowing from the heat exchanger 5 to the cleaning water tank 4, when the cleaning liquid is used for forward cleaning and backward cleaning of the heat exchanger 5, dirt on the heat exchanger 5 is bound to be carried along when flowing to the cleaning water tank 4, at this time, a filtering element 44 for filtering the dirt is required to be arranged in the cleaning water tank 4, accumulation of the dirt in the cleaning water tank 4 is avoided, the use of the cleaning water tank 4 is influenced, meanwhile, the cleaning liquid in the cleaning water tank 4 can be recycled, the frequency of replacing the cleaning liquid is reduced, the cost is reduced, and the cleaning water tank is more environment-friendly.
Further, the filter member 44 is a filter element, a basket filter, or the like having a filtering function.
The pressurizing test assembly 7 comprises a pressurizing water tank 71, a pressurizing pump 72 and a pressurizing valve 73 in some embodiments, the pressurizing water tank 71 is used for storing water for a pressurizing test, the pressurizing pump 72 is used for pumping the water in the pressurizing water tank 71 to the heat exchanger 5 so as to test the sealing performance of the heat exchanger 5, the pressurizing valve 73 is used for controlling the flow of the water for the pressurizing test, the pressurizing water tank 71 is connected with the heat exchanger 5 through a pipeline, the pressurizing pump 72 and the pressurizing valve 73 are arranged on the pipeline, when the pressurizing test is carried out, the forward cleaning pipeline 1 and the reverse cleaning pipeline 2 are closed, the pressurizing valve 73 is opened, the pressurizing test assembly 7 and the heat exchanger 5 are communicated, the pressurizing pump 72 is opened to enable the water to flow into the heat exchanger 5, the pressurizing is stopped after a period of time, the pressure inside the heat exchanger 5 is observed, and if the pressure value does not drop, the sealing performance of the heat exchanger 5 is good.
The washing device is in some embodiments further provided with a moving member 9 for moving the washing device, whereby the usability of the washing device is enhanced.
When the cleaning device is operated, firstly, water and a descaling agent are added into a cleaning water tank 4 to prepare cleaning liquid, then a cleaning pump 61 is opened, a water supply valve 43, a first valve 11 and a forward cleaning valve 41 are opened, the cleaning liquid is controlled to flow from a main cleaning pipeline 6 to a forward cleaning pipeline 1 firstly, then flows through the forward cleaning pipeline 1 and flows to a first end of a heat exchanger 5, then flows from the first end to a second end of the heat exchanger 5 to start forward cleaning, flows to a first return pipeline 31 after passing through the heat exchanger 5, finally flows into the cleaning water tank 4 again after flowing through the first return pipeline 31, a filtering piece 44 filters the cleaning liquid flowing into the cleaning water tank 4, and the filtered cleaning liquid flows from the main cleaning pipeline 6 to the forward cleaning pipeline 1 again under the driving of the cleaning pump.
The first forward cleaning time is 30 minutes, the cleaning pump 61 and the opened valves are closed after the cleaning is finished, the dirt condition of the filter piece 44 is checked, if the dirt is more, the filter piece 44 is detached for washing, then the filter piece 44 is installed, the cleaning pump 61, the water supply valve 43, the first valve 11 and the forward cleaning valve 41 are opened again for forward cleaning, the time is 4 hours, after the pressure of the cleaning pump 61 is stabilized, the vibrating piece 81 is opened for cleaning again for 2 hours, the cleaning liquid generates bubbles in the process, the impact force of the cleaning liquid is increased, the cleaning effect of the cleaning liquid is improved, the inflating piece 82 can be opened, or the vibrating piece 81 and the inflating piece 82 are opened simultaneously, and the impact force of the cleaning liquid is further increased.
After the forward cleaning is completed, all the cleaning pumps 61 and all the valves are closed, then the water supply valve 43, the second valve 21, the reverse cleaning valve 42 and the cleaning pump 61 are opened again, so that the reverse cleaning is performed, the cleaning liquid flows from the main cleaning pipeline 6 to the reverse cleaning pipeline 2, then the cleaning liquid flows through the reverse cleaning pipeline 2 and flows to the second end of the heat exchanger 5, then the cleaning liquid flows from the second end to the first end of the heat exchanger 5, so that the reverse cleaning is started, the cleaning liquid flows to the second return pipeline 32 after passing through the heat exchanger 5, finally flows into the cleaning water tank 4 again after passing through the second return pipeline 32, the cleaning liquid flowing into the cleaning water tank 4 by the filtering member 44 is filtered, and the filtered cleaning liquid flows from the main cleaning pipeline 6 to the reverse cleaning pipeline 2 again under the driving of the cleaning pumps.
The reverse cleaning time is 4 hours, after the pressure of the cleaning pump 61 is stable, the vibrating piece 81 is started to clean for 2 hours, bubbles are generated in the cleaning liquid in the process, so that the impact force of the cleaning liquid is increased, the cleaning effect of the cleaning liquid is improved, and the inflating piece 82 can be optionally started or the vibrating piece 81 and the inflating piece 82 are started simultaneously, so that the impact force of the cleaning liquid is further increased.
And (4) inspecting the cleaning effect after the reverse cleaning is finished, and if the inspection result is unqualified, re-performing the forward cleaning and the reverse cleaning until the inspection result is qualified, and performing the pressure test after the inspection result is qualified.
Before the pressurizing test is carried out, all valves and the cleaning pump 61 are closed, then the pressurizing water tank 71 is confirmed to be in a state of being filled with water, the pressurizing valve 73 and the pressurizing pump 72 are opened after the completion of the confirmation, the pressure value is observed, the highest pressurizing can be carried out to 2.25MPa, at the moment, the inlet and outlet valves of the heat exchanger 5 are closed for leakage detection, the leakage point is found to be processed in time, then the pressurizing test pump is continuously started, the pressure is observed for 10-15 minutes, no pressure drop exists, and if the pressure does not drop, the sealing performance of the heat exchanger 5 is good.
It is to be understood that the above-described technical features may be used in any combination without limitation.
The above is only the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and all the same principles are included in the protection scope of the present invention.
Claims (10)
1. An online cleaning device for a heat exchanger of a nuclear power station is characterized by comprising a forward cleaning pipeline (1), a reverse cleaning pipeline (2), a backflow cleaning pipeline (3) and a cleaning water tank (4);
one end of the forward cleaning pipeline (1) is connected with the cleaning water tank (4), and the other end of the forward cleaning pipeline is connected with the first end of the heat exchanger (5);
one end of the reverse cleaning pipeline (2) is connected with the cleaning water tank (4), and the other end of the reverse cleaning pipeline is connected with the second end of the heat exchanger (5);
one end of the backflow cleaning pipeline (3) is respectively connected to the first end and the second end of the heat exchanger (5), and the other end of the backflow cleaning pipeline is connected with the cleaning water tank (4);
the cleaning water tank (4) is used for storing cleaning liquid for cleaning the heat exchanger (5);
the forward cleaning pipeline (1) is used for controlling the cleaning liquid to flow from the cleaning water tank (4) to the first end of the heat exchanger (5);
the reverse cleaning pipeline (2) is used for controlling the cleaning liquid to flow from the cleaning water tank (4) to the second end of the heat exchanger (5);
the backflow cleaning pipeline (3) is used for controlling the cleaning liquid flowing to the heat exchanger (5) to flow back to the cleaning water tank (4) so that the cleaning liquid can carry out forward cleaning and reverse cleaning on the heat exchanger (5).
2. On-line cleaning device for nuclear power plant heat exchangers according to claim 1, characterized in that said forward cleaning line (1) is provided with a first valve (11) for controlling the flow of said cleaning liquid.
3. Nuclear power plant heat exchanger in-line cleaning apparatus as in claim 1, wherein the reverse purge line (2) is provided with a second valve (21) for controlling the flow of the purge liquid.
4. The plant for the in-line cleaning of nuclear power plant heat exchangers according to claim 1, characterized in that the return purge line (3) comprises a first return line (31), a second return line (32);
one end of the first return pipeline (31) is connected to the second end of the heat exchanger (5), and the other end of the first return pipeline is connected with the cleaning water tank (4) and used for controlling the cleaning liquid flowing from the forward cleaning pipeline (1) to the heat exchanger (5) to flow back to the cleaning water tank (4) so as to perform forward cleaning on the heat exchanger (5);
one end of the second return pipeline (32) is connected to the first end of the heat exchanger (5), the other end of the second return pipeline is connected with the cleaning water tank (4), and the second return pipeline is used for controlling the cleaning liquid flowing to the heat exchanger (5) from the reverse cleaning pipeline (2) to flow back to the cleaning water tank (4) so as to reversely clean the heat exchanger (5).
5. The on-line cleaning device for the heat exchanger of the nuclear power plant as claimed in claim 4, characterized in that the cleaning water tank (4) is provided with a forward cleaning valve (41), a reverse cleaning valve (42) and a water supply valve (43), and the cleaning device is further provided with a main cleaning pipeline (6) connected with the water supply valve (43);
the forward cleaning valve (41) is connected to the first return line (31) to control the flow of cleaning liquid from the first return line (31) to the cleaning tank (4), and the reverse cleaning valve (42) is connected to the second return line (32) to control the flow of cleaning liquid from the second return line (32) to the cleaning tank (4);
the main cleaning pipeline (6) is connected to the forward cleaning pipeline (1) and the reverse cleaning pipeline (2) so as to control the cleaning liquid to flow to the forward cleaning pipeline (1) and the reverse cleaning pipeline (2) from the cleaning water tank (4) respectively.
6. The on-line cleaning device for the nuclear power plant heat exchanger as recited in claim 5, characterized in that a cleaning pump (61) for driving the flow of the cleaning liquid is provided on the main cleaning line (6).
7. On-line cleaning device for nuclear power plant heat exchangers according to any of claims 1 to 6, characterized in that the cleaning water tank (4) is also provided with a filter (44) to filter the cleaning liquid flowing from the heat exchanger (5) to the cleaning water tank (4).
8. The on-line cleaning device for the heat exchanger of the nuclear power plant as recited in claim 1, characterized in that the cleaning device further comprises a pressure test assembly (7), wherein the pressure test assembly (7) is connected with the heat exchanger (5) to test the tightness of the heat exchanger (5);
the pressurizing test assembly (7) comprises a pressurizing water tank (71), a pressurizing pump (72) and a pressurizing valve (73), the pressurizing water tank (71) is used for storing water for a pressurizing test, the pressurizing pump (72) is used for pumping the water in the pressurizing water tank (71) to the heat exchanger (5) so as to test the sealing performance of the heat exchanger (5), and the pressurizing valve (73) is used for controlling the flow of the water for the pressurizing test.
9. The on-line cleaning device for the heat exchanger of the nuclear power plant as recited in any one of claims 1 to 6 and 8, characterized in that the cleaning device further comprises a pressurizing assembly (8) connected into the forward cleaning pipeline (1) and the reverse cleaning pipeline (2) for pressurizing the cleaning liquid in the forward cleaning pipeline (1) and the reverse cleaning pipeline (2).
10. The online cleaning device for the heat exchanger of the nuclear power plant as recited in claim 9, characterized in that the pressurizing assembly (8) comprises a vibrating member (81) and an inflating member (82), wherein the vibrating member (81) is used for vibrating the cleaning liquid to generate bubbles, the inflating member (82) is used for inflating compressed air into the cleaning liquid to generate bubbles in the cleaning liquid, and the bubbles are broken to enable the cleaning liquid to flow irregularly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223112862.2U CN218884759U (en) | 2022-11-22 | 2022-11-22 | Online cleaning device for heat exchanger of nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223112862.2U CN218884759U (en) | 2022-11-22 | 2022-11-22 | Online cleaning device for heat exchanger of nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218884759U true CN218884759U (en) | 2023-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223112862.2U Active CN218884759U (en) | 2022-11-22 | 2022-11-22 | Online cleaning device for heat exchanger of nuclear power station |
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| Country | Link |
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| CN (1) | CN218884759U (en) |
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2022
- 2022-11-22 CN CN202223112862.2U patent/CN218884759U/en active Active
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