Barrel-shaped cleaning device

Abstract

The utility model belongs to the technical field of water cooling systems of nuclear power stations, and discloses a barrel-shaped cleaning device. A first opening and a second opening are formed in the two sides of the main body cylinder correspondingly, cooling water enters from the first opening and flows out from the second opening, a filtering barrel is inserted into the main body cylinder, filtering holes are formed in the filtering barrel, the side wall of the filtering barrel abuts against the second opening, and a rotating shaft is rotationally installed in the main body cylinder. A driving device is mounted at the top of the main cylinder and drives the rotating shaft to rotate, a cleaning rod is mounted on the rotating shaft and abuts against the side wall of the filter barrel, and the rotating shaft, the filter barrel and the main cylinder are coaxial. The problem that time and labor are wasted when a filter screen is manually taken out and cleaned in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of water cooling systems of nuclear power plants, in particular to a barrel-type cleaning device. Background Art

[0002] The closed cooling water system of a nuclear power plant is the most important support system for the conventional island. It provides cooling water required for the normal operation of the auxiliary equipment on the conventional island. The cooling water absorbs the heat inside the above-mentioned units and discharges the heat into the sea to achieve heat transfer.

[0003] The carbon steel pipe forms a closed annular loop, and a cooling water pump is installed on the annular loop to push the cooling water to move along the inside of the carbon steel pipe. However, the water contains impurities. During the alternating process between hot and cold, the impurities in the water are easily precipitated and attached to the inner wall of the carbon steel pipe. In order to avoid the above phenomenon, the prior art usually installs a barrel-shaped filter device in the cooling water pipeline, wherein a barrel-shaped filter screen is installed in the filter device, and the filter screen is abutted against the cooling water outlet of the filter device. When the cooling water crosses the curved filter screen surface, impurities will accumulate on the filter screen. However, as time goes by, impurities will accumulate in the filter holes on the filter screen, resulting in a decrease in the flow of cooling water. At this time, the machine needs to be shut down, the filter screen needs to be manually removed, and the filter screen needs to be cleaned. This process is relatively time-consuming and labor-intensive. Utility Model Content

[0004] The utility model aims to provide a barrel-type cleaning device to solve the problem that the filter screen is taken out and cleaned manually in the prior art, which is time-consuming and labor-intensive.

[0005] To achieve this purpose, the utility model adopts the following technical scheme: the utility model provides a barrel-type cleaning device, including a main body barrel, a first opening and a second opening are respectively provided on both sides of the main body barrel, cooling water enters along the first opening, and cooling water flows out along the second opening, a filter barrel is inserted in the main body barrel, a filter hole is provided on the filter barrel, and the side wall of the filter barrel abuts against the second opening, a rotating shaft is rotatably installed in the main body barrel, a driving device is installed on the top of the main body barrel, the driving device drives the rotating shaft to rotate, a cleaning rod is installed on the rotating shaft, the cleaning rod abuts against the side wall of the filter barrel, and the rotating shaft, the filter barrel and the main body barrel are coaxial.

[0006] Preferably, the rotating shaft is connected to the cleaning rod through a connecting rod, the cross-section of the cleaning rod is trapezoidal, the cleaning rod includes abutment surface and a cleaning surface, the abutment surface abuts against the inner wall of the filter barrel, the cleaning surface and the side wall of the filter barrel form an acute angle, and the rotating shaft drives the cleaning rod to rotate toward the side of the angle between the cleaning surface and the abutment surface.

[0007] Preferably, four groups of cleaning rods are installed at equal intervals in the circumferential direction of the rotating shaft.

[0008] Preferably, along the radial projection of the main body tube, the projection of the cleaning rod and the rotation axis forms an acute angle, and the angle between the cleaning surface and the abutting surface is oriented obliquely downward.

[0009] Preferably, the filter barrel is in the shape of an inclined cylindrical column, the cooling water directly enters the filter barrel after passing through the first opening, and the second opening is covered with a side wall of the filter barrel.

[0010] Preferably, a cover plate is installed on the upper side of the main body tube, the driving device is a motor, the motor is installed on the cover plate through a bracket, the motor is formed with an output end, and the output end is connected to the rotating shaft through a coupling.

[0011] Preferably, the cover plate is circumferentially formed with a first through hole, the main body tube mouth is circumferentially formed with a flange, the flange is provided with a second through hole, bolts pass through the first through hole and the second through hole, and nuts are screwed on both ends of the bolts.

[0012] Preferably, a sewage outlet is provided at the bottom of the main body tube, the bottom of the sewage outlet is connected to a sewage pipe, and a sewage valve is installed at the end of the sewage pipe.

[0013] Preferably, the bottom surface of the main body tube is funnel-shaped, and the sewage outlet is opened at the center of the bottom surface.

[0014] Beneficial effect: When impurities appear around the filter hole, start the driving device to make the rotating shaft drive the cleaning rod to rotate. Then the cleaning rod will clean the impurities attached to the side wall of the filter barrel, so that the cooling water can pass through the filter hole, avoiding the cooling water from encountering obstacles, increasing the flow rate of the cooling water, and there is no need to stop the machine for manual cleaning, which improves the cleaning efficiency of the filter barrel and also improves the cooling efficiency of the cooling water. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a main body diagram of the barrel-type cleaning device of the utility model;

[0016] Figure 2 This is the main body diagram of the filter barrel of the utility model;

[0017] Figure 3 It is an enlarged view of the end of the cleaning rod of the utility model.

[0018] In the figure: 1. main body tube; 11. first opening; 12. second opening; 13. rotating shaft; 2. filter barrel; 21. filter hole; 3. cleaning rod; 31. cleaning surface; 32. abutting surface; 4. connecting rod; 5. motor; 6. coupling; 7. cover plate; 8. bolt; 9. nut; 10. drain pipe; 20. drain valve; 30. base. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0020] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0022] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0023] Under the existing technology, since impurities in the cooling water will adhere to the filter barrel, after a period of time, the filter holes will be blocked by impurities, thereby affecting the flow rate of the cooling water in the carbon steel pipe. If the flow rate of the cooling water is reduced, the inlet pressure of the water pump will be too low, which will lead to shutdown. In order to avoid the above situation, the system will be shut down regularly to remove the filter barrel from the main barrel and clean it manually, which is more laborious and the system will be shut down.

[0024] In order to solve the above problems, Figures 1 to 3 As shown, the utility model provides a barrel-type cleaning device, including a main body barrel 1, with a first opening 11 and a second opening 12 respectively provided on both sides of the main body barrel 1, cooling water enters along the first opening 11, and cooling water flows out along the second opening 12, a filter barrel 2 is inserted into the main body barrel 1, a filter hole 21 is provided on the filter barrel 2, and the side wall of the filter barrel 2 abuts against the second opening 12, a rotating shaft 13 is rotatably installed in the main body barrel 1, a driving device is installed on the top of the main body barrel 1, the driving device drives the rotating shaft 13 to rotate, a cleaning rod 3 is installed on the rotating shaft 13, the cleaning rod 3 abuts against the side wall of the filter barrel 2, and the rotating shaft 13, the filter barrel 2 and the main body barrel 1 are coaxial.

[0025] If the pressure of the cooling water at the water pump inlet is reduced at this time, it means that more impurities are accumulated on the filter barrel 2 at this time. In order to avoid the water pump from shutting down, the driving device is turned on, and the cleaning rod 3 is driven by the driving device to rotate. The cleaning rod 3 is in contact with the side wall of the filter barrel 2, and the impurities on the side wall of the filter barrel 2 will be scraped off, exposing the blocked filter hole 21. Scraping by the cleaning rod 3 can save manpower, so that the cooling water can continue to flow from the filter hole 21, so that the cooling water will not be blocked by impurities, and the flow rate of the cooling water is increased, thereby avoiding the water pump from shutting down due to too low pressure. When cleaning the filter barrel 2, there is no need to shut down the entire system. The driving device can be directly turned on alone to clean the filter barrel 2, thereby improving safety, saving time and cost, and improving the working efficiency of cooling water.

[0026] The rotating shaft 13 of the utility model is connected to the cleaning rod 3 through the connecting rod 4. The cross-section of the cleaning rod 3 is trapezoidal. The cleaning rod 3 includes a contact surface 32 and a cleaning surface 31. The contact surface 32 contacts the inner wall of the filter barrel 2. The cleaning surface 31 and the side wall of the filter barrel 2 form an acute angle. The rotating shaft 13 drives the cleaning rod 3 to rotate toward the side of the angle between the cleaning surface 31 and the contact surface 32.

[0027] The cleaning rod 3 is integrally attached to the inner wall of the filter barrel 2. Since the cleaning surface 31 and the side wall of the filter barrel 2 form an acute angle, the cleaning rod 3 removes attached impurities in a manner similar to that of a shovel. The inner wall of the filter barrel 2 can be fully cleaned through the cleaning surface 31, thereby improving the cleaning ability of the cleaning rod 3 and preventing the cleaning rod 3 from being unable to rotate due to excessive impurities.

[0028] Four groups of cleaning rods 3 are installed at equal intervals around the rotating shaft 13 of the utility model. When the rotating shaft 13 rotates, the inner wall of the filter barrel 2 will be cleaned by the four groups of cleaning rods 3, so that impurities attached to the filter barrel 2 can be quickly removed, thereby improving the cleaning efficiency of the cleaning rods 3.

[0029] Along the radial projection of the main tube 1, the projection of the cleaning rod 3 and the rotating shaft 13 is at an acute angle close to 45°, and the angle between the cleaning surface 31 and the abutting surface 32 is facing obliquely downward. In this way, when the rotating shaft 13 controls the cleaning rod 3 to rotate and remove impurities, a downward thrust will be generated on the impurities, thereby allowing the removed impurities to fall quickly, accelerating the cleaning speed, and allowing the impurities to settle quickly to the bottom.

[0030] The filter barrel 2 is in the shape of an inclined cylindrical column. The cooling water directly enters the filter barrel 2 after passing through the first opening 11 . The second opening 12 is covered with a side wall of the filter barrel 2 .

[0031] The filter barrel 2 is only provided with a second opening 12 on one side, and the position of the first opening 11 is left empty, so that the cooling water can move at high speed and will not be intercepted by the filter hole 21 multiple times, thereby preventing the cooling water from flowing too slowly and causing the water pump to shut down. At the same time, a side wall of the filter barrel 2 is provided on the side of the second opening 12, which can prevent impurities therein from passing through the filter barrel 2 and reduce the probability of crystallization in the carbon steel pipe.

[0032] A cover plate 7 is installed on the upper side of the main tube 1 . The driving device is a motor 5 . The motor 5 is installed on the cover plate 7 through a bracket. The motor 5 is formed with an output end, and the output end is connected to the rotating shaft 13 through a coupling 6 .

[0033] When it is detected that the water pressure at the water pump position is insufficient, the output end is driven to rotate by the motor 5, and then the shaft 13 can be driven to rotate by the coupling 6 to remove impurities inside the filter barrel 2. The motor 5 and the detection sensor can be electrically connected. When insufficient water pressure is detected, the sensor directly controls the motor 5 to rotate. When the water pressure of the cooling water meets the requirement, the sensor controls the motor 5 to stop to avoid wasting energy.

[0034] The cover plate 7 of the utility model is circumferentially formed with a first through hole, the main body tube 1 is circumferentially formed with a flange, a second through hole is opened on the flange, a bolt 8 passes through the first through hole and the second through hole, and nuts 9 are screwed on both ends of the bolt 8 respectively.

[0035] The cover plate 7 is fixed by bolts 8 and nuts 9 at both ends. When it is necessary to shut down the machine for maintenance, the nuts 9 on the upper and lower sides can be unscrewed, and then the bolts 8 can be taken out from the first through hole and the second through hole from the inside. After removing the cover plate 7, the inside of the main tube 1 can be cleaned and inspected. Since the filter barrel 2 is inserted into the inside of the main tube 1, the filter barrel 2 can be pulled out first to facilitate maintenance and cleaning.

[0036] Since all the impurities are pushed to the bottom by the cleaning rod 3 , a sewage outlet is opened at the bottom of the main tube 1 , and the bottom of the sewage outlet is connected to the sewage pipe 10 , and a sewage valve 20 is installed at the end of the sewage pipe 10 .

[0037] When all the impurities are deposited at the bottom, open the drain valve 20, and the cooling water in the main tube 1 will drive the impurities at the bottom to be sent out along the drain pipe 10, so that the impurities inside the main tube 1 can be cleaned and sent out of the main tube 1. The above device can be used to remove and eliminate impurities on the filter barrel 2 without stopping the cooling system, thereby improving the working efficiency of the cooling water and reducing the work intensity of the workers.

[0038] The bottom surface of the main tube 1 is funnel-shaped, and the sewage outlet is opened at the center of the bottom surface, so that all impurities can be gathered at the sewage outlet at the lowest point of the bottom surface of the main tube 1, which is convenient for discharge to the outside. When the sewage valve 20 is opened, it is convenient for cooling water to carry the removed impurities to the sewage valve 20, so that all impurities can be discharged. The main tube 1 of the utility model is installed on a cement base 30, so that the main tube 1 can maintain stability during operation.

[0039] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A barrel-type cleaning device, characterized in that: The invention comprises a main body tube (1), wherein the main body tube (1) is provided with a first opening (11) and a second opening (12) on both sides thereof, cooling water enters through the first opening (11), and flows out through the second opening (12), a filter barrel (2) is inserted into the main body tube (1), a filter hole (21) is provided on the filter barrel (2), a side wall of the filter barrel (2) abuts against the second opening (12), a rotating shaft (13) is rotatably installed in the main body tube (1), and the main body tube (1) is provided with a filter hole (21). ) is installed at the top, the driving device drives the rotating shaft (13) to rotate, the cleaning rod (3) is installed on the rotating shaft (13), the cleaning rod (3) is in contact with the side wall of the filter barrel (2), the rotating shaft (13), the filter barrel (2) and the main body tube (1) are coaxial; the filter barrel (2) is in the shape of an inclined cylindrical platform, the cooling water directly enters the filter barrel (2) after passing through the first opening (11), and the upper cover of the second opening (12) is connected to the side wall of the filter barrel (2).

2. The barrel type cleaning device according to claim 1, characterized in that: The rotating shaft (13) is connected to the cleaning rod (3) via a connecting rod (4); the cleaning rod (3) has a trapezoidal cross section; the cleaning rod (3) comprises a contact surface (32) and a cleaning surface (31); the contact surface (32) contacts the inner wall of the filter barrel (2); the cleaning surface (31) and the side wall of the filter barrel (2) form an acute angle; the rotating shaft (13) drives the cleaning rod (3) to rotate toward one side of the angle between the cleaning surface (31) and the contact surface (32).

3. The barrel type cleaning device according to claim 2, characterized in that: Four groups of cleaning rods (3) are installed at equal intervals in the circumferential direction of the rotating shaft (13).

4. The barrel type cleaning device according to claim 2, characterized in that: Along the radial projection of the main body tube (1), the projection of the cleaning rod (3) and the rotating shaft (13) form an acute angle, and the angle between the cleaning surface (31) and the abutting surface (32) is slanted downward.

5. The barrel type cleaning device according to claim 1, characterized in that: A cover plate (7) is installed on the upper side of the main body tube (1); the driving device is a motor (5); the motor (5) is installed on the cover plate (7) via a bracket; the motor (5) is formed with an output end, and the output end is connected to the rotating shaft (13) via a coupling (6).

6. The barrel type cleaning device according to claim 5, characterized in that: The cover plate (7) is formed with a first through hole in the circumference, the main body tube (1) is formed with a flange in the circumference of the tube mouth, and a second through hole is opened on the flange. The bolt (8) passes through the first through hole and the second through hole, and nuts (9) are screwed on both ends of the bolt (8).

7. The barrel type cleaning device according to claim 1, characterized in that: A sewage outlet is provided at the bottom of the main body tube (1), the bottom of the sewage outlet is connected to a sewage pipe (10), and a sewage valve (20) is installed at the end of the sewage pipe (10).

8. The barrel type cleaning device according to claim 7, characterized in that: The bottom surface of the main body tube (1) is funnel-shaped, and the sewage outlet is arranged at the center of the bottom surface.

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