CN108405427A - Cleaning equipment and cleaning method between a kind of the first and second support plate of steam generator - Google Patents

Abstract

The invention discloses a cleaning device and a cleaning method between the first and second support plates of a steam generator. The cleaning device includes a body, a pair of front supporting claws and a pair of rear supporting claws arranged on both sides of the The driving mechanism of the supporting claw and/or the rear supporting claw, the gun head used to communicate with the water source, the rotating mechanism used to drive the gun head to rotate, and the cover plate arranged above the body; the cleaning equipment works on the first support of the steam generator Above the plate, it is used to clean the area between the heat transfer tubes on both sides. The two front support claws and the two rear support claws are both expanded outwards on the corresponding heat transfer tubes, and the water in the gun head is sprayed to the adjacent heat transfer tubes. For the inter-tube area of the tube, the cleaning of the inter-tube area between the first and second support plates is realized by rotating the gun head. The invention solves the problem of installing the cleaning equipment above the first support plate under the structure of the existing steam generator and retracts it smoothly. The cleaning equipment not only meets the cleaning requirements, but also eliminates the influence of jet flow reaction force, and has high stability.

Description

Cleaning equipment and cleaning method between the first and second support plates of a steam generator

technical field

The invention relates to the field of steam generators, in particular to a cleaning device and cleaning method between the first and second support plates of the steam generator.

Background technique

A steam generator is a mechanical device that uses heat energy from fuel or other energy sources to heat water into hot water or steam. Due to the limitation and complexity of its internal structure, the steam generator has only been cleaned for the area between the tube plate and the secondary side of the steam generator for a long time; in recent years, the cleaning technology between the splitter plate and the first support plate has been developed; so far, It is not yet possible to clean the area between the first and second support plates, and this area is characterized by eddy current signals with more sedimentary sludge, which needs to be cleaned regularly.

Contents of the invention

In view of the above, it is necessary to provide a cleaning device and a cleaning method between the first and second support plates of the steam generator. The technical solution of the present invention is as follows:

In one aspect, the present invention provides a cleaning device between the first and second support plates of a steam generator. The cleaning device includes a body, a pair of front supporting claws arranged on both sides of the front of the body, and two front claws arranged on the rear of the body. A pair of rear support claws on the side, a driving mechanism for driving the front support claws and/or rear support claws, a gun head for cleaning between pipes and connected to a water source, a rotating mechanism and settings for driving the gun head to rotate a cover plate above the body;

The cleaning equipment works above the first support plate of the steam generator, and is used to clean the area between the heat transfer tubes on both sides. On the tube, the water flow in the gun head nozzle is sprayed to the inter-tube area of adjacent heat transfer tubes, and the entire inter-tube area between the first and second support plates can be cleaned by rotating the gun head.

Further, the cleaning device further includes a camera module for monitoring the spraying area information of the water flow, the alignment status information of the front support claw and/or the rear support claw and the heat transfer tube, and/or the front view status information of the main body.

Further, the camera module includes a first camera, a second camera and a third camera, the first camera is used to monitor the spray area information of the water flow, and the second camera is used to monitor the front support claw and/or the rear The alignment information of the support claws and the heat transfer tubes, and the third camera is used to monitor the front-view status information of the body.

Further, the driving mechanism is a stepping cylinder, and the cleaning device also includes a connecting plate fixedly connected with the driving mechanism, one of the front supporting claw and the rear supporting claw is arranged on the stepping cylinder, and the other One is arranged on the connection board.

Further, the cleaning equipment also includes a high-pressure rotary head and a bearing seat, one end of the gun head is connected to the bearing seat, and the other end is connected to the high-pressure rotary head, and the nozzle of the gun head for spraying water is arranged on the top of the gun head. middle part.

Further, the gun head communicates with the water source through a high-pressure tube, the high-pressure tube is a flexible tube, and the high-pressure tube communicates with the gun head through the high-pressure rotating head.

In another aspect, the present invention provides an installation tool for installing or recovering the cleaning equipment as described above, which includes a handle and a column with an L-shaped structure, the column is a hollow structure, and a lifting rod is arranged inside it. The upper part of the lifting rod is provided with a wire hole for the wire harness of the cleaning equipment to pass through, and the lower part of the lifting rod is connected to one end of the traction rope, and the other end of the traction rope extends out of the column and extends toward the handle through the guide wheel.

Further, the installation tool also includes a wire harness driving mechanism arranged at the hand hole of the steam generator, and the wire harness driving mechanism is used to control the wire harness on the cleaning equipment to enter and exit the steam generator according to the stepping conditions of the cleaning equipment. ;

Alternatively, the wire harness driving mechanism further includes a fixing locking ring, and the fixing locking ring is used for fixing the handle on the outside of the steam generator.

In another aspect, the present invention provides a method for cleaning between the first and second support plates of the steam generator based on the above-mentioned cleaning equipment and installation tool, including:

Pass one end of the high-pressure pipe and wire harness on the cleaning device through the wire hole on the lifting rod of the installation tool;

Put the column of cleaning equipment and installation tools into the steam generator through the hand hole;

Simultaneously pull the traction rope of the installation tool and the other end of the high-pressure pipe to make the cleaning equipment rise above the first support plate;

Tilt the lifting rod toward the direction of the opening slot, and at the same time move the other end of the high-pressure pipe into the hand hole, so that the cleaning equipment is laid flat on the first support plate;

Open the front support claw and the rear support claw so that they are respectively expanded and supported on the corresponding heat transfer tubes;

Open the water circuit, the air circuit and the rotating mechanism, so that the sprayed water can clean the area between the heat transfer tubes.

Further, after cleaning the area between a heat transfer tube, it also includes:

Shut off the water circuit, air circuit and rotating mechanism;

The front support claws are closed, and after the stepping cylinder pushes out a tube distance, the front support claws are opened;

The rear support claw is closed, and the stepping cylinder is retracted by one tube spacing, so that the rear support claw advances one tube spacing and opens;

Open the water circuit, air circuit and rotating mechanism to clean the area between the next heat transfer tubes.

The present invention has the following advantages:

a. The cleaning equipment cooperates with the pressure pump and the high-pressure flexible water pipe to meet the cleaning requirements;

b. When cleaning the area between the heat transfer tubes, rely on the front and rear support claws to expand and support the heat transfer tubes at the same time, eliminating the influence of the jet reaction force and improving the stability of the equipment during the cleaning process.

Description of drawings

Fig. 1 is a schematic structural view of cleaning equipment between the first and second support plates of a steam generator provided by an embodiment of the present invention;

Fig. 2 is a top view of the cleaning equipment between heat transfer tubes provided by the embodiment of the present invention;

Fig. 3 is the sectional view of the A-A direction of the cleaning equipment between the heat transfer tubes in Fig. 2;

Fig. 4 is the front view of the cleaning equipment between the heat transfer tubes in Fig. 2;

5 is a schematic structural view of an installation tool for cleaning equipment provided by an embodiment of the present invention;

Fig. 6 is an example diagram of the installation of the cleaning equipment provided by the embodiment of the present invention on the steam generator through the installation tool;

Fig. 7 is a top view of the first support plate of the steam generator provided by the embodiment of the present invention;

Figure 8 is a partial enlarged view of the first support plate in Figure 7;

Fig. 9 is a schematic diagram of the independent structure of the wire harness drive mechanism in Fig. 6;

Fig. 10 is a flow chart of the cleaning method of the inter-pipe cleaning equipment provided by the embodiment of the present invention;

Fig. 11 is a flow chart of the method for step-by-step control of the cleaning equipment after cleaning a tube.

Wherein, reference numerals are: 11-the first support plate, 12-heat transfer tube, 13-hand hole, 14-distributor plate, 15-second support plate, 16-open slot, 17-shroud, 20-body , 21-front support claw, 22-rear support claw, 23-drive mechanism, 24-gun head, 25-rotation mechanism, 26-cover plate, 27-first camera, 28-second camera, 29-third camera , 30-connecting plate, 31-high pressure rotating head, 32-bearing seat, 33-nozzle, 34-jet groove, 41-handle, 42-column, 43-lifting rod, 44-line hole, 45-traction rope, 46 -guide wheel, 47-steel wire retractable fixer, 5-wiring harness driving mechanism, 51-fixed locking ring, 52-installation flange, 53-driving mechanism, 54-wiring harness, 55-high pressure pipe.

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

The cleaning equipment between the first and second support plates of the steam generator provided by the embodiment of the present invention can be conveniently installed on the first support plate to achieve recovery, and realize the pipe-by-pipe cleaning in this area by means of pneumatic stepping and gun head rotation. The high-pressure cleaning can effectively offset the jet reaction force, the equipment has high stability, and has a great market prospect.

Example

The difficulty in the design and development of flexible cleaning equipment (due to the structural characteristics of the steam generator, the cleaning equipment needs to be connected to flexible high-pressure water pipes, called flexible cleaning equipment) is how to install the cleaning equipment in the first place under the existing steam generator structure. It is above the support plate and can be retracted smoothly; the second is the integrated miniaturization design of the cleaning equipment to meet the functional requirements of cleaning, and also consider the stability of the equipment during cleaning and how to eliminate the jet reaction force.

In one embodiment of the present invention, a cleaning device between the first and second support plates of the steam generator is provided. As shown in FIGS. 1-4 , the cleaning device includes a body 20 and two A pair of front support claws 21 on the side, a pair of rear support claws 22 arranged on both sides of the rear of the body 20, a driving mechanism 23 for driving the front support claws 21 and/or rear support claws 22, used for cleaning between tubes and A gun head 24 communicating with the water source, a rotating mechanism 25 for driving the gun head 24 to rotate, and a cover plate 26 arranged above the body 20 . The two front supporting claws 21 and the two rear supporting claws 22 are all expanded outwards on the corresponding heat transfer tubes 12, and the water flow in the gun head 24 is sprayed to the inter-tube area of the adjacent heat transfer tubes 12, At the same time, the cleaning of the area between the first and second support plates is realized under the action of the rotating mechanism 25, and the control system of the rotating mechanism 25 adopts a distributed PLC system.

The cleaning equipment works above the first support plate 11 of the steam generator, and is used to clean the area between the heat transfer tubes between the first support plate 11 and the second support plate 15. As shown in Figure 6, the cleaning equipment first Enter the diverter plate 14 of the steam generator through the hand hole 13, and then lift it to the top of the first support plate 11 through the lifting action of the installation tool. Referring to FIGS. 7 and 8, it can be seen that the first support plate An open slot 16 is provided on the edge of the first support plate 11 , that is, the cleaning equipment passes through the open slot 16 to reach above the first support plate 11 . The main function of the cover plate 26 is to prevent the internal parts such as the gun head 24 from being jammed with the opening groove 16 of the first support plate 11 during the installation or retraction process, so as to ensure the smooth completion of the installation or retraction of the equipment, and the cover plate 26 is provided with a jet Groove 34, the jet groove 34 is used to provide space for the water flow of the gun head 24 to spray outward.

The driving mechanism 23 is a step cylinder, and the cleaning device also includes a connecting plate 30 fixedly connected to the driving mechanism 23, and one of the front supporting claws 21 and the rear supporting claws 22 is arranged on the stepping On the cylinder, the other is arranged on the connecting plate 30 , in the drawings of this embodiment, the front supporting claw 21 shown is arranged on the step cylinder, and the rear supporting claw 22 is arranged on the connecting plate 30 .

The cleaning equipment is the core component to realize the flexible cleaning above the first support plate, which can meet the functional requirements of stepping, rotating, centering between tubes, stability and parameter matching during cleaning. The designed cleaning equipment can meet the above requirements; in order to ensure that the cleaning equipment can be smoothly installed above the first support plate 11, in combination with the size of the opening groove 16 of the first support plate 11, the corresponding width and thickness are designed to ensure that the cleaning equipment can be installed smoothly. through the open slot 16 . Wherein, there are two front supporting claws 21 and two rear supporting claws 22. As shown in Figure 2, the front supporting claws 21 or the rear supporting claws 22 are all made up of customized two-way cylinders and supporting claws (air claw fingers) , in which the two-way cylinder is a single-acting spring return type, which can prevent the cylinder from being closed when the air source is abnormal, so as to realize the smooth removal of the equipment; The surface is damaged, and the material is polyetheretherketone. When installing or recovering, the front and rear support claws remain closed. During the cleaning process, the fingers of the two air claws are opened to support the heat transfer tubes on both sides to offset the impact of the jet reaction force on the stability of the equipment. The stepping cylinder realizes the forward or backward of the equipment, and is used to clean different tubes; the stroke of the cylinder is the center-to-center distance of adjacent tubes, and the method of mechanical limit is adopted to ensure the accuracy of stepping and the centering of the jet. The stepping process is as follows, when the rear support claw 22 is opened, the front support claw 21 is closed, the stepping cylinder pushes out a pipe distance, and the front support claw 21 also advances a pipe distance; at this time, the front support claw 21 is opened, and the rear support claw 22 closed, the stepping air cylinder retracts a pipe spacing, and the rear support claw 22 also advances a pipe spacing thereupon; thus completing the advancement between the pipes, the retreat principle is the same.

Preferably, the cleaning device also includes a high-pressure rotating head 31 and a bearing seat 32, one end of the gun head 24 is connected to the bearing seat 32, and the other end is connected to the high-pressure rotating head 31, and the gun head 24 is used for spraying water. The nozzle 33 is arranged in the middle of the gun head 24, preferably two nozzles 33 are provided, as shown in Figure 3 and Figure 4, correspondingly, the cover plate 26 is provided with two jet grooves 34, and the nozzle 33 is arranged on the At the jet slot 34, the distance between the two nozzles 33 is set as the distance between the centers of adjacent tubes. One end of the gun head 24 is installed on the high-pressure rotary head 31, and the other end is installed on the bearing seat 32. The rotating mechanism 25 is preferably a servo motor, and the servo motor drives the gun head 24 to rotate, and the rotation angle can be set by the control system; three cameras They are respectively used to observe the state of the water jet inflowing between the tubes, the centering state between the tubes and the front-view state. The installation and withdrawal of the equipment specifically include a first camera 27, a second camera 28 and a third camera 29, the first camera 27 is used to monitor the spray area information of the water flow, and the second camera 28 is used to monitor the front support claw 21 and/or the alignment information of the rear support claw 22 and the heat transfer tube 12 , the third camera 29 is used to monitor the front view status information of the main body 20 .

Preferably, the gun head 24 communicates with the water source through a high-pressure pipe. Considering that the high-pressure pipe needs to turn two 90° bends, the high-pressure pipe is a flexible pipe, and the high-pressure pipe passes through the high-pressure rotating head 31 and the gun head 24. connected. Under the joint action of the high-pressure pump and the nozzle, the flexible pipe can meet the high-pressure cleaning flow requirement.

In another embodiment of the present invention, there is provided an installation tool for installing or reclaiming the cleaning equipment as described above, the installation tool is used to place the cleaning equipment on the first support plate for cleaning and when the cleaning is finished Finally, recycling the equipment is a necessary prerequisite for the flexible cleaning of the first support plate. Considering the internal space conditions of the steam generator, it consists of two parts, the handle end and the column end, which are connected by a quick interface. The handle end contains a steel wire retractable fixer; As shown in Figure 5, the installation tool includes a handle 41 and a column 42, the handle 41 and the column 42 form an L-shaped structure, the column 42 is a hollow structure, and a lifting rod 43 is arranged inside it. The upper part of the lifting rod 43 is provided with a wire hole 44 for the wiring harness of the cleaning equipment to pass through. The lower part of the lifting rod 43 is connected to one end of the traction rope 45, and the other end of the traction rope 45 extends out of the column 42 and passes through the guide wheel. 46 extends toward the handle 41 direction, and the traction rope 45 is preferably a steel wire rope, and the end of the handle 41 away from the column 42 is provided with a steel wire retractable fixer 47 (by manually pulling the steel wire rope during installation, after the installation is completed, the cleaning stage, The steel wire rope of installation tool is fixed by steel wire retractable fixer 47).

The installation structure of the cleaning equipment in the steam generator is shown in Figure 6. The lifting rod 43 moves up and down in the inner cavity of the column 42 by manually retracting the steel wire, and the high-pressure water pipe and wiring harness of the flexible cleaning equipment pass through the wire hole 44 ; By pulling the water pipe and wiring harness, the cleaning equipment will be raised to the limit position of the lower end of the lifting rod 43. At this time, the pulling end of the equipment is just at the lower surface of the first support plate 11, and the lifting rod 43 will be raised by pulling the steel wire, and then the lower part of the cleaning device will be lifted. Rise to the top of the first support plate 11, at this time it can be judged by the front-view camera, and the steel wire is fixed and limited by the steel wire retractable fixer 47. At this time, push the installation tool inward as a whole, so that the column 42 is inclined inward to contact the opening groove 16 of the first support plate 11, and then loosen or slightly push the high-pressure pipe or wire harness forward to place the device on the first support plate 11 .

Since the high-pressure pipe or wire harness needs to turn two right-angle bends from the hand hole to the top of the first support plate 11, and the high-pressure pipe has a certain rigidity, in order to reduce the stepping resistance of the equipment, the wire harness driving mechanism 5 is installed on the hand hole, which can Follow-up control wire harness 54 and high-pressure pipe 55 enter and exit the steam generator according to the stepping situation of the equipment, as shown in Fig. 6 and Fig. 9 . It is mainly composed of a fixed locking ring 51, a mounting flange 52, a driving mechanism 53, etc., wherein the fixed locking ring 51 is used to limit and fix the handle 41 of the installation tool; the mounting flange 52 is passed through a bolt (not shown in the figure) Installed on the flange surface of the hand hole, the driving mechanism 53 drives three sets of rollers through the rotating motor to realize the entry and exit of the wire harness 54 and the high-pressure pipe 55 .

In another embodiment of the present invention, a method for cleaning between the first and second support plates of the steam generator based on the above-mentioned cleaning equipment and installation tools is provided. Referring to FIG. 10 , the method includes the following process:

S1. Pass the high-pressure pipe 55 on the cleaning device and one end of the wire harness 54 through the wire hole on the lifting rod of the installation tool.

S2. Put the column of the cleaning equipment and the installation tool into the steam generator through the hand hole.

Specifically, the body 20 is placed above the splitter plate 14 (as shown in FIG. 6 ), and the installation tool is inserted obliquely upwards into the enclosure 17 , and the lifting rod 43 is at the lowest position at this time.

S3. Simultaneously pull the traction rope of the installation tool and the other end of the high-pressure pipe to raise the cleaning device above the first support plate.

Install the tool vertically, and install the handle end, pull back to make the column close to the coaming board 17, pull the steel wire to raise the lifting rod 43, and the cleaning equipment will also rise thereupon until exceeding the upper surface of the first support plate 11, as shown in Figure 6.

The shape of the first support plate is shown in Figure 7 and Figure 8, and it is a circular plate as a whole, and a notch-shaped opening groove 16 is respectively provided on both sides of the diameter, for the cleaning equipment to move from the first support plate 11 to the bottom. Lift up, pass through the opening slot 16 and reach above the first support plate 11.

S4. Lower the lifting rod, and at the same time move the other end of the high-pressure pipe into the hand hole, so that the cleaning equipment is laid flat on the first support plate.

Lift up the handle end of the installation tool, so that the lifting rod at the height of the first supporting plate is obliquely attached to the end of the opening groove 16 of the first supporting plate; while lowering the lifting rod, send the high-pressure pipe to the hand hole, so that the cleaning equipment is flat on the above the first support plate.

S5. Open the front supporting claw and the rear supporting claw so that they are expanded and supported on the corresponding heat transfer tubes respectively.

Fine-tune according to the video signal of the centering camera, open the front and rear two pairs of supporting claws so that the supporting claws on both sides are supported on the heat transfer tube, and the cleaning equipment will also be slightly adjusted during the process of supporting the supporting claws on the heat transfer tube to achieve the installation in place The status of the camera is confirmed by the video signals of the three cameras at the same time.

S6. Open the water path, the air path and the rotating mechanism, so that the sprayed water flow can clean the area between the heat transfer tubes.

Further, after cleaning the area between a heat transfer tube, step control is also included, see Figure 11, the method includes the following process:

S71, shut off the water circuit, the air circuit and the rotating mechanism;

S72. The front support claw is closed, and after the stepping cylinder pushes out a pipe distance, the front support claw is opened;

S73. The rear support claw is closed, and the stepping cylinder is retracted by one pipe distance, so that the rear support claw is advanced by one pipe distance and opened;

S74. Open the water circuit, the air circuit and the rotating mechanism, and clean the area between the next heat transfer tubes until all the areas between the tubes are cleaned.

After cleaning, recover the cleaning equipment in reverse order of the above process.

The cleaning equipment between the heat transfer tubes of the present invention can realize the hydraulic cleaning function of the area between the first and second support plates; considering the arrangement length of the high-pressure hose and the characteristics of its small inner diameter and large pressure loss, it is recommended to use a half-section Type cleaning, that is, installing equipment from the hand holes on both sides for cleaning, which will not be repeated here.

The above is only a preferred embodiment of the present invention, and does not limit the scope of its patents. Any equivalent structure or equivalent process transformation made by using the description of the present invention and the contents of the accompanying drawings is directly or indirectly used in other related technical fields. All are included in the scope of patent protection of the present invention in the same way.

Claims (10)

1. A cleaning device between the first and second support plates of a steam generator, characterized in that the cleaning device comprises a body (20), a pair of front supporting claws (21) arranged on both sides of the front of the body (20) ), a pair of rear support claws (22) arranged on both sides of the rear part of the body (20), a driving mechanism (23) for driving the front support claws (21) and/or rear support claws (22), for pipe The gun head (24) for cleaning and communicating with the water source, the rotating mechanism (25) for driving the gun head (24) to rotate, and the cover plate (26) arranged above the body; The cleaning equipment works above the first supporting plate (11) of the steam generator, and is used to clean the area between the heat transfer tubes (12) on both sides, two front supporting claws (21) and two rear supporting claws (22) ) are all outwardly expanded on the respective corresponding heat transfer tubes (12), and the water flow in the nozzle (33) of the gun head (24) is sprayed to the intertube area of the adjacent heat transfer tubes (12), through Rotating the gun head and stepping the body realizes complete cleaning of the intertube area between the first and second support plates. 2. The cleaning device according to claim 1, characterized in that, the cleaning device further comprises a camera module for monitoring the spray area information of the water flow, the front support claw (21) and/or the rear support claw (22) Alignment status information with the heat transfer tube (12), and/or front view status information of the body (20). 3. The cleaning device according to claim 2, wherein the camera module comprises a first camera (27), a second camera (28) and a third camera (29), and the first camera (27 ) is used to monitor the injection area information of the water flow, and the second camera (28) is used to monitor the alignment information of the front support claw (21) and/or the rear support claw (22) and the heat transfer tube (12), and the first The three cameras (29) are used to monitor the forward-looking status information of the main body (20). 4. The cleaning device according to claim 1, characterized in that, the driving mechanism (23) is a step cylinder, and the cleaning device further comprises a connecting plate (30) fixedly connected to the driving mechanism (23) One of the front supporting claws (21) and the rear supporting claws (22) is arranged on the step cylinder, and the other is arranged on the connecting plate (30). 5. The cleaning device according to claim 1, characterized in that, the cleaning device also comprises a high-pressure rotary head (31) and a bearing seat (32), and one end of the gun head (24) is connected to the bearing seat (32) Connect, the other end is connected with high-pressure rotating head (31), and the nozzle (33) that described gun head (24) is used for spraying water flow is arranged on the middle part of gun head (24). 6. The cleaning device according to claim 5, characterized in that, the gun head (24) communicates with the water source through a high-pressure pipe, the high-pressure pipe is a flexible pipe, and the high-pressure pipe passes through the high-pressure rotating head (31 ) communicates with the gun head (24). 7. An installation tool for installing or reclaiming any one of cleaning equipment according to claims 1-6, characterized in that it comprises a handle (41) and a column (42) forming an L-shaped structure, and the column (42 ) is a hollow structure, and a lifting rod (43) is arranged inside it. The upper part of the lifting rod (43) is provided with a wire hole (44) for the wiring harness of the cleaning equipment to pass through. The lower part of the lifting rod (43) is connected with the traction rope One end of (45) is connected, and the other end of described traction rope (45) stretches out column (42), and extends toward handle (41) direction by guide wheel (46). 8. The installation tool according to claim 7, characterized in that it further comprises a wire harness driving mechanism (5) arranged at the hand hole (13) of the steam generator, and the wire harness driving mechanism (5) is used for cleaning equipment according to The step-by-step situation controls the wiring harness on the cleaning equipment to enter and exit the steam generator; Alternatively, the wire harness driving mechanism (5) further includes a fixed locking ring (51), and the fixed locking ring (51) is used to fix the handle (41) outside the steam generator. 9. A cleaning method based on the cleaning equipment according to any one of claims 1-6 and the installation tool according to claim 7 or 8 between the first and second support plates of the steam generator, characterized in that it comprises : Pass one end of the high-pressure pipe and wire harness on the cleaning device through the wire hole on the lifting rod of the installation tool; Put the column of cleaning equipment and installation tools into the steam generator through the hand hole; Simultaneously pull the traction rope of the installation tool and the other end of the high-pressure pipe to make the cleaning equipment rise above the first support plate; Tilt the lifting rod toward the direction of the opening slot, and at the same time move the other end of the high-pressure pipe into the hand hole, so that the cleaning equipment is laid flat on the first support plate; Open the front support claw and the rear support claw so that they are respectively expanded and supported on the corresponding heat transfer tubes; Open the water circuit, the air circuit and the rotating mechanism, so that the sprayed water can clean the area between the heat transfer tubes. 10. The cleaning method according to claim 9, characterized in that, after cleaning the area between a heat transfer tube, further comprising: Shut off the water circuit, air circuit and rotating mechanism; The front support claws are closed, and after the stepping cylinder pushes out a tube distance, the front support claws are opened; The rear support claw is closed, and the stepping cylinder is retracted by one tube spacing, so that the rear support claw advances one tube spacing and opens; Open the water circuit, air circuit and rotating mechanism to clean the area between the next heat transfer tubes.