Descaling device for power plant condensers

Abstract

The utility model relates to the technical field of condenser overhauling, disclose a descaling device of power plant condenser, including rotating pipe and the mobile pipe that is connected with rotating pipe through swivel joint, the rear end of rotating pipe is installed with brush, and the outside of rotating pipe is close to the front end interlaced installation of brush with several nozzles, the outside of mobile pipe is installed with mobile subassembly, and the rear end of mobile pipe is close to the installation of motor no.

Description

Technical Field

[0001] This utility model relates to the field of condenser maintenance technology, specifically a descaling device for power plant condensers. Background Technology

[0002] The condenser in a thermal power turbine unit establishes and maintains a vacuum at the turbine exhaust, condensing the exhaust steam into water for boiler reuse. Increasing and maintaining the condenser vacuum and reducing the turbine exhaust pressure and temperature improves the turbine unit's cycle thermal efficiency. Typically, after a period of operation, corrosion, dust, impurities, microbial slime, carbonate scale, and silicate scale accumulate on the inner walls of the condenser's stainless steel, copper, or titanium heat exchange tubes, forming scale that increases the condenser's cooling tube thermal resistance and reduces the cooling water circulation. Therefore, descaling is necessary.

[0003] Chinese patent discloses a descaling device for a power plant condenser (authorization announcement number CN214892833U). This patented technology describes a descaling device for a power plant condenser, comprising a base. A driving mechanism is disposed on one side of the top surface of the base, and symmetrical fixing mechanisms are disposed on the other side of the top surface of the base. The driving mechanism and fixing mechanisms are located on the same axis. A cleaning mechanism is disposed on the top surface of the driving mechanism, comprising a motor mounted on the top surface of the driving mechanism. A rotating shaft is fixedly connected to one side of the motor and the fixing mechanism. Equally spaced cleaning brushes are fixedly connected to the circumferential sidewall of the rotating shaft. By setting up the driving mechanism, the motor drives the rotating shaft to rotate, and the rotating shaft drives the cleaning brushes to clean the inside of the pipes, replacing manual pipe cleaning and improving cleaning efficiency. However, its descaling effect is poor and it cannot effectively remove scale. Utility Model Content

[0004] The purpose of this invention is to provide a descaling device for power plant condensers to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A descaling device for a power plant condenser includes a rotating tube and a movable tube connected to the rotating tube via a rotary joint. A brush is installed at the rear end of the rotating tube, and several nozzles are staggeredly installed on the outer side of the rotating tube near the front end of the brush. A movable component is installed on the outer side of the movable tube, and a motor is installed on the outer side of the movable tube near the rear end of the movable component. A gearbox is installed on the outer side of the rotating tube near the rear end of the rotary joint. A rotating shaft is fixedly connected to the output end of the motor. A driving gear is fixedly connected to the rear end of the rotating shaft inside the gearbox. A driven gear is fixedly connected to the outer side of the rotating tube inside the gearbox. The driven gears mesh with each other.

[0007] As a further improvement of this utility model: bearings two are installed at both the front and rear ends of the junction between the gearbox and the rotating tube, and bearing one is installed at the junction between the rotating shaft and the gearbox.

[0008] As a further embodiment of this utility model: a tube shell is installed on the outer side of the gearbox and motor one near the rotating shaft, and the moving tube is fixedly connected to motor one through a motor frame.

[0009] As a further improvement of this utility model: the front end of the moving tube is provided with a water inlet, and an air inlet is provided on one side of the front end of the moving tube.

[0010] As a further embodiment of this utility model: the moving component includes a lead screw housing and a second motor fixedly installed at the front end of the lead screw housing. A set of handles is installed at the upper end of the lead screw housing. A ball screw is installed inside the lead screw housing at the output end of the second motor. A set of nut pairs is engaged with the outer side of the ball screw. A connecting block is fixedly connected to the lower end of each nut pair. A strip groove is opened at the lower end of the lead screw housing, and the connecting block penetrates the inner side of the strip groove.

[0011] As a further embodiment of this utility model: a bearing three is installed at the rear end of the inside of the lead screw housing, the rear end of the ball screw is installed inside the bearing three, and the lower end of the connecting block is fixedly connected to the moving tube.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention enables the rotating tube and brush to rotate at the rotating joint via a motor and gearbox, while the moving tube remains stationary. The moving component allows the rotating tube and brush to move back and forth together. Inserting the brush into the heat exchange tube of the condenser removes scale from the tube. High-pressure water is sprayed in an atomized form from the nozzle to rinse the inside of the heat exchange tube, ensuring its cleanliness. Attached Figure Description

[0014] Figure 1 A schematic diagram of the descaling device for a power plant condenser.

[0015] Figure 2 A cross-sectional view of the gearbox in the descaling device of a power plant condenser;

[0016] Figure 3 This is a cross-sectional schematic diagram of the moving component in the descaling device of a power plant condenser.

[0017] In the diagram: 1. Brush; 2. Rotating tube; 3. Moving tube; 4. Air inlet; 5. Water inlet; 6. Moving assembly; 61. Screw housing; 62. Handle; 63. Motor II; 64. Connecting block; 65. Nut pair; 66. Strip groove; 67. Ball screw; 68. Bearing III; 7. Motor I; 8. Gearbox; 9. Nozzle; 10. Tube housing; 11. Bearing I; 12. Driving gear; 13. Driven gear; 14. Bearing II; 15. Rotary joint; 16. Rotating shaft; 17. Motor frame. Detailed Implementation

[0018] Please see Figures 1-3 In this embodiment of the present invention, the descaling device for a power plant condenser includes a rotating tube 2 and a movable tube 3 connected to the rotating tube 2 via a rotating joint 15. A brush 1 is installed at the rear end of the rotating tube 2, and a plurality of nozzles 9 are staggeredly installed on the outer side of the rotating tube 2 near the front end of the brush 1. A movable component 6 is installed on the outer side of the movable tube 3, and a motor 7 is installed on the outer side of the movable tube 3 near the rear end of the movable component 6. A gearbox 8 is installed on the outer side of the rotating tube 2 near the rear end of the rotating joint 15. A rotating shaft 16 is fixedly connected to the output end of the motor 7. A drive gear 12 is fixedly connected to the rear end of the rotating shaft 16 inside the gearbox 8. A driven gear 13 is fixedly connected to the outer side of the rotating tube 2 inside the gearbox 8. The driven gears 13 mesh with each other.

[0019] exist Figure 1 and Figure 2In the gearbox 8, bearings 14 are installed at both the front and rear ends of the junction between the gearbox 8 and the rotating tube 2. These bearings allow the rotating tube 2 and the driven gear 13 to rotate stably inside the gearbox 8. Bearing 11 is installed at the junction of the rotating shaft 16 and the gearbox 8. Bearing 11 allows the rotating shaft 16 and the driving gear 12 to rotate stably inside the gearbox 8. A housing 10 is installed between the gearbox 8 and the motor 7, near the outer side of the rotating shaft 16. The housing 10 securely connects the gearbox 8 and the motor 7 together. The moving tube 3 connects to the motor... The first motor 7 is fixedly connected to the motor frame 17, thereby connecting the gearbox 8, the first motor 7, and the moving tube 3 to form an integral structure. The first motor 7 drives the rotating shaft 16 and the driving gear 12 to rotate around the bearing 11. The driving gear 12 meshes with the driven gear 13, causing the rotating tube 2 and the brush 1 to rotate around the bearing 14 and rotate at the rotating joint 15, while the moving tube 3 remains fixed. The brush 1 is inserted into the heat exchange tube of the condenser, and the scale inside the heat exchange tube can be removed by the high-speed rotation of the brush 1.

[0020] exist Figure 1 In the process, the front end of the moving tube 3 is provided with a water inlet 5, and an air inlet 4 is provided on one side of the front end of the moving tube 3. The water inlet 5 is connected to an external water source through a soft water pipe; the air inlet 4 is connected to an external air source through a soft air pipe. Water and air enter the moving tube 3 from the water inlet 5 and the air inlet 4 respectively, and then enter the rotary joint 15 and the rotary tube 2 in sequence. Finally, they are sprayed out from the nozzle 9 in an atomized form to rinse the inside of the heat exchange tube, ensuring the cleanliness of the heat exchange tube.

[0021] exist Figure 1 and Figure 3 In the middle, the moving component 6 includes a lead screw housing 61 and a second motor 63 fixedly installed at the front end of the lead screw housing 61. A set of handles 62 is installed at the upper end of the lead screw housing 61. A ball screw 67 is installed inside the lead screw housing 61 at the output end of the second motor 63. A set of nut pairs 65 are engaged with the outer side of the ball screw 67. A connecting block 64 is fixedly connected to the lower end of each nut pair 65. A strip groove 66 is opened at the lower end of the lead screw housing 61. The connecting block 64 passes through the inner side of the strip groove 66. A bearing 68 is installed at the rear end inside the lead screw housing 61. The rear end is installed inside the bearing 68, so that the ball screw 67 can rotate stably inside the bearing 68. The lower end of the connecting block 64 is fixedly connected to the moving tube 3. By holding a set of handles 62, the ball screw 67 is driven to rotate around the bearing 68 by the motor 63, so that a set of nut pairs 65 moves back and forth along the strip groove 66, thereby driving the moving tube 3 to move back and forth through the connecting block 64, and then causing the rotating tube 2 and the brush 1 to move back and forth together. During the back and forth movement, the brush 1 removes the scale inside the heat exchange tube.

[0022] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A descaling device for a power plant condenser, comprising a rotating tube (2) and a movable tube (3) connected to the rotating tube (2) via a rotating joint (15), characterized in that, A brush (1) is installed at the rear end of the rotating tube (2), and several nozzles (9) are staggered on the outside of the rotating tube (2) near the front end of the brush (1). A moving component (6) is installed on the outside of the moving tube (3), and a motor (7) is installed on the outside of the moving tube (3) near the rear end of the moving component (6). A gearbox (8) is installed on the outside of the rotating tube (2) near the rear end of the rotating joint (15). A rotating shaft (16) is fixedly connected to the output end of the motor (7). A drive gear (12) is fixedly connected inside the gearbox (8) at the rear end of the rotating shaft (16). A driven gear (13) is fixedly connected inside the gearbox (8) on the outside of the rotating tube (2). The driven gear (13) meshes with the driven gear (13).

2. The descaling device for a power plant condenser according to claim 1, characterized in that, Bearing 2 (14) is installed at both the front and rear ends of the junction between the gearbox (8) and the rotating tube (2), and bearing 1 (11) is installed at the junction between the rotating shaft (16) and the gearbox (8).

3. The descaling device for a power plant condenser according to claim 1, characterized in that, A tube shell (10) is installed on the outside of the gearbox (8) and motor (7) near the rotating shaft (16), and the moving tube (3) is fixedly connected to motor (7) through motor frame (17).

4. The descaling device for a power plant condenser according to claim 1, characterized in that, The front end of the moving pipe (3) is provided with a water inlet (5), and an air inlet (4) is provided on one side of the front end of the moving pipe (3).

5. The descaling device for a power plant condenser according to claim 1, characterized in that, The moving component (6) includes a lead screw housing (61) and a second motor (63) fixedly installed at the front end of the lead screw housing (61). A set of handles (62) is installed at the upper end of the lead screw housing (61). A ball screw (67) is installed inside the lead screw housing (61) at the output end of the second motor (63). A set of nut pairs (65) is engaged with the outer side of the ball screw (67). A connecting block (64) is fixedly connected to the lower end of each nut pair (65). A strip groove (66) is opened at the lower end of the lead screw housing (61). The connecting block (64) penetrates the inner side of the strip groove (66).

6. The descaling device for a power plant condenser according to claim 5, characterized in that, The rear end of the screw housing (61) is fitted with a bearing three (68), the rear end of the ball screw (67) is fitted inside the bearing three (68), and the lower end of the connecting block (64) is fixedly connected to the moving tube (3).

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