CN116020687A - Hydropower station water filter repair processing device and repair method - Google Patents

Abstract

The invention provides a repair processing device and a repair method for a water filter of a hydropower station, relates to the technical field of pipeline treatment of a hydropower station, and is designed to solve the problem of inconvenient repair of a water filter pipeline of a hydropower station. The supporting and positioning mechanism and the nozzle mechanism of the water filter repairing and processing device of the hydropower station; the supporting and positioning mechanism includes a telescopic assembly; the nozzle mechanism includes a nozzle body, and the power input end of the telescopic assembly is configured to be fixed and axially slidably connected with the nozzle body in the circumferential direction. The telescoping assembly is configured to be capable of radially telescoping under the drive of the nozzle body. The repair processing device for the water filter of the hydropower station provided by the invention can improve the convenience of repairing the water filter pipeline of the hydropower station.

Description

Hydropower station water filter repair processing device and repair method

technical field

The invention relates to the technical field of pipeline treatment in hydropower stations, in particular to a repairing and processing device for a water filter in a hydropower station and a method for repairing a water filter in a hydropower station.

Background technique

As shown in Figure 1, Figure 1 shows the problems discovered by the staff of the hydropower station during a patrol inspection. The sewage pipe of the water filter of the hydropower station was damaged due to corrosion, water pressure, etc., resulting in water leakage. Compared with the rupture of household pipes in daily life, in hydropower stations, due to the influence of pipe size, materials, location, etc., it is more difficult and time-consuming to replace damaged water pipes. Moreover, long-term shutdown of equipment will also affect power generation. cause a greater impact.

Contents of the invention

The first object of the present invention is to provide a repairing and processing device for a water filter of a hydropower station, so as to solve the technical problem of inconvenient repair of the water filter pipeline of the existing hydropower station.

The water filter repairing and processing device of a hydropower station provided by the present invention includes a support positioning mechanism and a nozzle mechanism; the support positioning mechanism includes a telescopic assembly; the nozzle mechanism includes a nozzle body, and the power input end of the telescopic assembly is configured as It is fixed and axially slidably connected with the nozzle body circumferentially, and the telescoping assembly is configured to radially expand and contract under the drive of the nozzle body.

The beneficial effects brought by the water filter repairing device of the hydropower station of the present invention are:

By setting the telescopic assembly in the support positioning mechanism, when the telescopic assembly is in the extended state and abuts against the pipe wall, the support positioning mechanism realizes positioning and supports the nozzle mechanism, so that the water filter of the hydropower station can be repaired and manufactured relatively to the pipe wall. maintain its posture. When the telescopic assembly is in the retracted state, the telescopic assembly can be separated from the pipe wall to move conveniently along the axial direction of the pipe wall. After moving to the desired position, the telescopic assembly can be extended again to realize positioning and support. The telescopic assembly is configured to radially expand and contract under the drive of the nozzle body, and the rotation of the nozzle body can be used to drive the power input end of the telescopic assembly to move, thereby driving the telescopic assembly to change its telescopic state, which is very convenient to operate.

In a preferred technical solution, the support positioning mechanism includes a sleeve and a power input member; the power input member is the power input end of the telescopic assembly; the telescopic assembly includes a telescopic rod, and one end of the telescopic rod is used for Abutting against the pipe segment to be repaired, the telescopic rod is slidably connected with the sleeve, and the telescopic rod is used to limit the radial position of the power input member relative to the sleeve.

In the preferred technical solution, the telescopic rods are multiple and divided into multiple groups, one group has two telescopic rods, the two telescopic rods of the same group are distributed on both sides of the power input part and are parallel, the same group of telescopic rods Two telescopic rods engage the pipe section being repaired with opposite ends; different groups of said telescopic rods are distributed along the central axis of the sleeve.

In a preferred technical solution, the telescopic rod is slidingly connected to the opposite side walls of the sleeve; the power input member has a gear tooth portion, the telescopic rod has a rack portion, and the rack portion is connected to the The gear teeth mesh.

In a preferred technical solution, one of the outer peripheral surface of the nozzle body and the power input member is provided with a circumferential transmission convex portion, and the other is provided with a circumferential transmission concave portion, and the circumferential transmission convex portion It can cooperate with the said circumferential transmission concave part.

In the preferred technical solution, a nozzle is provided at one end of the nozzle body, and an anti-off ring and a clamping portion are fixedly sleeved on the nozzle body, and the anti-off ring is located between the supporting positioning mechanism and the nozzle. Between, when the anti-falling ring abuts against the support positioning mechanism, the circumferential transmission convex part is disengaged from the circumferential transmission concave part; the clamping part is located at the support positioning mechanism away from the nozzle When the clamping portion abuts against the support and positioning mechanism, the circumferential transmission convex part cooperates with the circumferential transmission concave part.

In a preferred technical solution, one of the anti-off ring and the power input member is provided with a circumferential stop recess, and the other is provided with a circumferential stop protrusion, and the anti-off ring and the When the support positioning mechanism abuts, the circumferential stop concave part cooperates with the circumferential stop convex part.

In a preferred technical solution, the nozzle mechanism further includes a barrel and a constant pressure injector, one end of the barrel communicates with the nozzle body, and the other end of the barrel connects with the constant pressure injector.

The second object of the present invention is to provide a repair method to solve the technical problem of inconvenient repair of water filter pipelines in hydropower stations.

The method for repairing the water filter of the hydropower station provided by the present invention uses any of the above-mentioned repairing processing devices for the water filter of the hydropower station, and the method for repairing the water filter of the hydropower station includes:

Obtain information on defective pipe sections;

Prepare repair pipe sections;

Spray an anti-wear coating on the inner wall of the repaired pipe section using any of the above-mentioned repairing and processing devices for water filters in hydropower stations;

The repair pipe section will be installed on site.

The beneficial effects brought by the water filter repairing device of the hydropower station of the present invention are:

By using the above-mentioned hydropower station water filter repair processing device in the repair method, the inner wall of the repair pipe section can be sprayed in a relatively fast, convenient and stable manner on site instead of in the workshop, resulting in a more uniform coating; Improve the repair speed of pipeline defects in hydropower stations and improve the repair effect.

In a preferred technical solution, the thickness of the anti-wear coating sprayed on the inner wall of the repaired pipe section is greater than or equal to 0.3mm.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the background technology, the drawings that need to be used in the description of the embodiments or the background technology will be briefly introduced below. Obviously, the drawings in the following description are only the present invention. For the embodiments of the invention, those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Fig. 1 is the schematic diagram of the damaged pipeline mentioned in the background technology of the present invention;

Fig. 2 is a schematic diagram of the water filter repair processing device of a hydropower station provided by Embodiment 1 of the present invention applied to the repair pipe section;

Fig. 3 is a partial disassembly view of the water filter repairing and processing device of a hydropower station provided by Embodiment 1 of the present invention;

Fig. 4 is a schematic flow chart of a method for repairing and processing a water filter in a hydropower station according to Embodiment 2 of the present invention;

FIG. 5 is a schematic structural view of the repaired pipe section provided by Embodiment 2 of the present invention;

Explanation of reference signs:

1-support positioning mechanism; 11-sleeve; 12-end cover; 21-telescopic rod; 3-nozzle body; 31-transmission block; 32-clamping part; 4-nozzle; Body; 52-Cylinder Cover; 6-Power Input Part; 7-Anti-drop Ring; 8-Constant Pressure Syringe; 9-Stop Column.

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Embodiment one:

Fig. 2 is a schematic diagram of the water filter repair processing device of a hydropower station provided by Embodiment 1 of the present invention applied to the repair pipe section; Fig. 3 is a partial disassembly diagram of the water filter repair processing device of a hydropower station provided by Embodiment 1 of the present invention; 2-As shown in Figure 3, the water filter repairing and processing device of a hydropower station provided by Embodiment 1 of the present invention includes a support positioning mechanism 1 and a nozzle mechanism; the support positioning mechanism 1 includes a telescopic assembly; The power input end of the assembly is configured to be fixedly and axially slidably connected with the nozzle body 3 in the circumferential direction, and the telescopic assembly is configured to radially expand and contract under the drive of the nozzle body 3 .

Specifically, the water filter repair processing device of a hydropower station in this embodiment is used for spraying the inner wall of a pipeline in a hydropower station. Because the quality needs to be guaranteed during spraying, it is necessary to ensure that the posture of the nozzle body 3 is stable when the water filter repairing processing device of the hydropower station is moved along the axial direction of the pipeline to spray, that is, the angle of the nozzle body 3 does not shake.

By setting the telescopic assembly in the support positioning mechanism 1, when the telescopic assembly is in the extended state and abuts against the pipe wall, the support positioning mechanism 1 realizes positioning and supports the nozzle mechanism, so that the water filter of the hydropower station can be repaired, processed and manufactured relative to the pipe. The wall can maintain its posture. When the telescopic assembly is in the retracted state, the telescopic assembly can be separated from the pipe wall to move conveniently along the axial direction of the pipe wall. After moving to the desired position, the telescopic assembly can be extended again to realize positioning and support. The telescopic assembly is configured to radially expand and contract under the drive of the nozzle body 3, and the rotation of the nozzle body 3 can be used to drive the power input end of the telescopic assembly to move, thereby driving the telescopic assembly to change its telescopic state, which is very convenient to operate.

As shown in Figure 3, preferably, the support positioning mechanism 1 includes a sleeve 11 and a power input member 6; the power input member 6 is the power input end of the telescopic assembly; the telescopic assembly includes a telescopic rod 21, and one end of the telescopic rod 21 is used to resist Connected to the pipe section to be repaired, the telescopic rod 21 is slidingly connected with the sleeve 11 , and the telescopic rod 21 is used to limit the radial position of the power input member 6 relative to the sleeve 11 .

Wherein, the supporting and positioning mechanism 1 further includes an end cover 12 , which is adapted to the end surface of the sleeve 11 and can restrict the power input member 6 and the sleeve 11 in one axial direction. Specifically, a plurality of push rods may be fixedly arranged on the inner surface of the end cover 12 , and the free ends of the push rods are round heads and abut against the power input member 6 .

Through the sliding connection between the telescopic rod 21 and the sleeve 11, the telescopic rod 21 can be kept stable in the direction relative to the sleeve 11 during the stretching process, and the radial direction of the power input member 6 relative to the sleeve 11 can be limited by the telescopic rod 21. position, then there is no need for other parts such as bearings to limit the position of the power input member 6, thereby facilitating the installation structure of the power input member 6, and also reducing the weight of the supporting positioning mechanism 1, making the water filter repair processing device of the hydropower station more convenient. Easy to operate.

As shown in Figure 3, preferably, there are multiple telescopic rods 21 and divided into multiple groups, one group has two telescopic rods 21, and the two telescopic rods 21 of the same group are distributed on both sides of the power input member 6 and Parallel, the two telescopic rods 21 of the same group resist the pipe section to be repaired towards opposite ends;

Different groups of the telescopic rods 21 are distributed along the central axis of the sleeve 11 .

Specifically, in this embodiment, a plurality of telescopic rods 21 are divided into two groups, and the two telescopic rods 21 of the same group are symmetrical to the axis center of the sleeve 11. Specifically, the two telescopic rods 21 of each group can be length, shape , size are all the same, and the length that protrudes relative to the sleeve 11 is also the same. That is, the sleeve 11 is arranged concentrically with the pipe wall. Wherein, the telescopic rod 21 in this embodiment does not mean that the length of the telescopic rod 21 protrudes from the sleeve 11 to change. The two groups of telescopic rods 21 have different axial positions relative to the sleeve 11 . In this embodiment, the telescopic directions of the two groups of telescopic rods 21 are perpendicular to each other.

By placing the two telescopic rods 21 of the same group on both radial sides of the power input member 6, the radial position of the power input member 6 can be limited from both sides, and multiple groups of telescopic rods 21 in different directions can be set. The radial position of the power input member 6 is restricted from multiple directions, so that the power input member 6 is concentrically arranged with the pipe wall.

And when a group of two telescopic rods 21 are all stretched to the maximum size in the pipe wall, that is, the opposite ends of these two telescopic rods 21 all abut against the inner side of the pipe wall, then when the support positioning mechanism 1 will rotate again , it can only be rotated on the axis of these two telescopic rods 21 and the contact points on the inner side of the pipe wall (except that the supporting positioning mechanism 1 rotates around the axis of the pipeline); The plane where the rods 21 are located, and the opposite ends of the two telescopic rods 21 of the other group also abut against the pipe wall. Therefore, if the two telescopic rods 21 of the previous group and the inner contact point of the tube wall are used as the axis of movement, the radius of rotation of the two telescopic rods 21 endpoints of the other group is that the endpoint is connected to the above-mentioned contact point. The vertical line of the line, and the vertical line is not coplanar with the other group of telescopic rods 21, and the end points of the other group of two telescopic rods 21 have abutted against the pipe wall, so such rotation cannot take place. Therefore, the rotation of the supporting positioning mechanism 1 can be restricted, thereby supporting the positioning of the positioning structure.

In addition to the implementation described later, in other implementations, the telescopic rod 21 can only be slidably connected to the side wall of the sleeve 11, for example, the thickness of the sleeve 11 where the telescopic rod 21 passes can be increased, and Utilize the cooperation of the guide rib and the guide groove to limit the swing of the telescopic rod 21 relative to the sleeve 11. In a certain sense, it can be considered that the telescopic rod 21 and the sleeve 11 constitute a cantilever beam structure. This implementation method can reduce the The length of the telescopic rod 21, but the positioning effect is weaker than the implementation described later. Moreover, it is necessary to increase the thickness of the sleeve 11, which will also increase the overall weight of the water filter repairing and processing device of the hydropower station.

As shown in Figure 3, preferably, the opposite side walls of the telescopic rod 21 and the sleeve 11 are slidingly connected; the power input member 6 has a gear tooth portion, and the telescopic rod 21 has a rack portion, and the rack portion meshes with the gear tooth portion .

Specifically, for each telescopic rod 21 , there are two positions that are slidably connected to the sleeve 11 , and the position that is in contact with the power input member 6 is located between these two positions that are slidably connected to the sleeve 11 . In this embodiment, the gear portion of the power input member 6 and the rack portion of the telescopic rod 21 have the same modulus, that is, the power input member 6 rotates at a certain angle, which can drive the four telescopic rods 21 of the two groups of telescopic rods 21 along the Move the same distance in the respective length directions.

Slidingly connecting the telescopic rod 21 to opposite side walls of the sleeve 11 can form a two-point support for the telescopic rod 21, and make the position in contact with the power input member 6 between the two support points, thereby improving the rigidity. Taking the end face of the power input member 6 shown in Figure 2 as a benchmark, when the power input member 6 rotates clockwise, it can drive each telescopic rod 21 to move in the direction of elongation, and when the power input member 6 rotates counterclockwise, Then the telescopic rods 21 can be driven to retract together, and all the telescopic rods 21 can be driven to move at the same time, which improves the convenience of operation.

As shown in Figure 3, preferably, among the outer peripheral surface of the nozzle body 3 and the power input member 6, one is provided with a circumferential transmission convex part, and the other is provided with a circumferential transmission concave part, and the circumferential transmission convex part can Cooperate with the circumferential transmission recess.

In this embodiment, the circumferential transmission protrusion can be a transmission block 31 arranged on the nozzle body 3, for example, a flat key can be selected to be fixedly connected to the nozzle body 3, specifically, it can be fixedly connected by welding or screws, and the peripheral The transmission recess may be a transmission groove extending axially of the power input member 6 , and the transmission block 31 cooperates with the transmission groove to make the power input member 6 and the nozzle body 3 rotate together. And when the nozzle body 3 needs to move axially relative to the supporting positioning mechanism 1 , the transmission groove and the transmission block 31 can slide relative to each other.

Of course, in other implementations, it is also possible to set the transmission slot on the nozzle body 3, and set the transmission block 31 on the power input member 6. Of course, such an arrangement requires the local thickening of the nozzle body 3. , not as convenient as the setting method in this embodiment.

By setting the circumferential transmission concave portion or the circumferential transmission convex portion respectively in the outer peripheral surface of the nozzle body 3 and the power input member 6, when the circumferential transmission concave portion and the circumferential transmission convex portion are axially aligned, the The nozzle body 3 drives the power input member 6 to rotate, and then drives the telescopic rod 21 of the telescopic assembly to extend or shorten, thereby switching the positioning relationship of the water filter repair processing device of the hydropower station relative to the pipeline.

As shown in Figure 3, preferably, one end of the nozzle body 3 is provided with a nozzle 4, and the nozzle body 3 is fixedly provided with an anti-off ring 7 and a clamping portion 32, and the anti-off ring 7 is located between the support positioning mechanism 1 and the nozzle. 4, when the anti-off ring 7 abuts against the support positioning mechanism 1, the circumferential transmission convex part and the circumferential transmission concave part are separated; the clamping part 32 is located on the side of the support positioning mechanism 1 away from the nozzle 4, when the clamping part 32 is in contact with the support positioning mechanism 1, the circumferential transmission convex part cooperates with the circumferential transmission concave part.

Wherein, the nozzle 4 is conical, and sprays paint in a conical radial manner into the pipeline. And the way that the anti-off ring 7 is fixedly connected with the nozzle body 3 can be through the threaded connection of the internal thread part and the external thread part, or a lock nut is set on one side of the anti-off ring 7, and the other side makes the anti-off ring 7 Abuts against the pillow block on the nozzle. The clamping part 32 can be an outer hexagon or an outer square, and the clamping part 32 can be grasped to push, pull or rotate the clamping part 32 to realize the advancement, retreat or rotation of the nozzle body 3 in the pipeline. Of course, the clamping portion 32 can also serve as a pillow block to limit the position of the power input member 6 .

By setting the anti-off ring 7, the shortest distance between the power input member 6 and the nozzle 4 when moving on the nozzle body 3 can be limited during use, and the support positioning mechanism 1 can be pulled back by the nozzle body 3, and when the anti When the disengagement ring 7 abuts against the support positioning mechanism 1, the circumferential transmission concave part and the circumferential transmission convex part are separated, so that the expansion and contraction degree of the telescopic assembly of the support positioning mechanism 1 will not be changed. During the spraying process, the stability of the nozzle 4 can be guaranteed to ensure the spraying quality. The clamping part 32 is set, and the support and positioning mechanism 1 can be driven to move to the inside of the pipeline by pushing the nozzle body 3 inwardly, and when the movement ends, the circumferential transmission concave part and the circumferential transmission convex part just cooperate to rotate the nozzle The main body 3 can drive the telescopic assembly to extend through the power input member 6, so that the supporting positioning mechanism 1 is positioned with the pipeline to determine the position of the nozzle 4.

As shown in Figure 3, preferably, of the anti-off ring 7 and the power input member 6, one is provided with a circumferential stop recess, and the other is provided with a circumferential stop protrusion, and the anti-off ring 7 is positioned with the support When the mechanism 1 abuts, the circumferential stop concave part cooperates with the circumferential stop convex part.

Specifically, the convex part of the circumferential stopper can be a stop post 9 arranged on the anti-falling ring 7, and the recessed part of the circumferential stop can be a stopper hole arranged on the power input part 6, and the stopper hole can be The counterbore can also be a through hole.

By arranging the circumferential stop recess and the circumferential stop protrusion, the anti-fall ring 7 can be used to lock the power when the anti-off ring 7 abuts against the support positioning mechanism 1, that is, when the nozzle body 3 is pulled outward for spraying. The input member 6 further locks the telescopic assembly to prevent the retraction of the telescopic assembly due to external disturbances, thereby ensuring the stability of the trajectory of the nozzle 4 and thus ensuring the spraying quality.

As shown in FIG. 2 , preferably, the nozzle mechanism further includes a barrel 5 and a constant pressure injector 8 , one end of the barrel 5 communicates with the nozzle body 3 , and the other end of the barrel 5 is connected with the constant pressure injector 8 .

Specifically, the barrel 5 includes a barrel cover 52 and a barrel body 51 , and a pipe joint is fixed on the outside of the barrel cover 52 to fix the pipe and realize communication with the nozzle body 3 . And one end of cylinder body 51 away from cylinder cover 52 is provided with boost nozzle, and the inside of boost nozzle can be bonded and fixed with an elastic rubber plug. The constant pressure injector 8 has a needle, which can pass through the elastic rubber stopper to provide pressure to the barrel 5 .

The action principle of this embodiment is as follows:

First, load the material required for spraying into the barrel 5;

Then, connect the support and positioning mechanism 1 with the nozzle body 3 , install the anti-loosening ring 7 and the nozzle 4 , and push the clamping part 32 forward until the clamping part 32 touches the support and positioning mechanism 1 .

Rotate the support part, and then drive the power input member 6 to rotate through the nozzle body 3, the circumferential transmission convex part and the circumferential transmission concave part in turn, so that each telescopic rod 21 shrinks to the inside of the sleeve 11; the support positioning mechanism 1 is placed In the pipe section to be sprayed, reversely rotate the clamping part 32 to drive the power input member 6 to reversely rotate, so that each telescopic rod 21 stretches out, and their respective ends abut against the inner wall of the pipe, thereby realizing support and positioning.

Push the clamping part 32, and then drive the support and positioning mechanism 1 to move to the end of the area to be sprayed until it reaches the deepest position.

Operate the constant-pressure injector 8 to pressurize the barrel 5, so that the nozzle 4 sprays the paint to the inner wall of the pipeline in the form of a cone, and sprays the anti-wear coating. Then at the same time, pull the nozzle body 3 to move to the other end at a consistent speed, and constantly extract the water filter repairing processing device of the hydropower station. During this process, since the anti-loosening ring 7 prevents the power input member 6 from rotating through the stop post 9, the telescopic assembly is guaranteed not to retract, thereby ensuring the stable positions of the nozzle body 3 and the nozzle 4.

Embodiment two:

The method for repairing a water filter in a hydropower station provided in Embodiment 2 of the present invention uses any of the above-mentioned repairing processing devices for a water filter in a hydropower station, and the method for repairing a water filter in a hydropower station includes:

Obtain information on defective pipe sections;

Prepare repair pipe sections;

Spray an anti-wear coating on the inner wall of the repaired pipe section using any of the above-mentioned repairing and processing devices for water filters in hydropower stations;

The repair pipe section will be installed on site.

By using the above-mentioned hydropower station water filter repair processing device in the repair method, the inner wall of the repair pipe section can be sprayed in a relatively fast, convenient and stable manner on site instead of in the workshop, resulting in a more uniform coating; Improve the repair speed of pipeline defects in hydropower stations and improve the repair effect.

Preferably, the thickness of the anti-wear coating sprayed on the inner wall of the repaired pipe section is greater than or equal to 0.3mm.

By setting the thickness of the coating to be greater than or equal to 0.3mm, the corrosion and abrasion of the pipeline by natural water bodies can be effectively prevented.

Hereby cite the following specific implementation methods to illustrate the method for repairing and processing the water filter of the hydropower station provided in this embodiment:

S1. Obtain information on defective pipe sections, including:

Review the information in the station to determine the pressure, specification, material and structural characteristics of the defective pipe section;

Measure the removed defective pipe section to obtain the size.

It can be understood that the pressure and specifications reflect the requirements of the defect pipe section on the diameter and wall thickness of the pipe, such as: Ф108*4mm; the material can reflect the characteristics of the water body circulating in this section. It should be noted that the size obtained from the above measurement is not the actual size of the subsequent prefabricated pipe fittings, because machining allowances and welding allowances need to be added according to the actual situation, such as: 30-50mm allowances are reserved on both sides of the pipe section as machine Machining allowance and welding allowance.

S2. Preparation of repaired pipe sections:

According to the information of the defective pipe section, the pipe material is selected, and the repair pipe section is prepared, which specifically includes: pipe cutting, pipe grinding and other processes;

If the repair pipe section includes two or more assets, each pipe is cut to obtain corresponding sub-pipes, and the sub-pipes are welded to each other. In this embodiment, two sub-pipes are taken as an example, one sub-pipe is a 304 stainless steel pipe, and the other is a Q235 carbon steel pipe. Specifically, the welding process of stainless steel and carbon steel is as follows, using GTAW (Gas Tungsten Arc Welding, tungsten inert gas shielded welding), using Φ2.5mm ER309L welding wire, positive electrode welding, welding current 90A-105A, welding voltage 14V-16V, Welding speed 90mm/min-120mm/min, interlayer temperature ≤150℃. As shown in Figure 5, the length of the stainless steel pipe section is shorter than that of the carbon steel pipe section, and after the actual repair, the stainless steel pipe section is located on the incoming water side of the repaired pipe section. The combined welding of carbon steel pipe section and stainless steel pipe section is to combine the advantages of both. In the application environment of this application, the carbon steel pipe section can be subsequently embedded in concrete and protected by an outer layer of antirust.

S3. Use the above-mentioned hydropower station water filter repair processing device to spray anti-wear coating on the inner wall of the repair pipe section to obtain a heterogeneous composite pipe. The specific method is as described in the action principle part of Embodiment 1, and will not be repeated here. Wherein the thickness of the anti-wear coating is greater than or equal to 0.3mm.

S4. On-site installation:

The end machining allowance of the dissimilar composite pipe is cut off and welded to the position of the cut-off defective pipe section.

Although the present invention is disclosed above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so the protection scope of the present invention should be based on the scope defined in the claims.

Finally, it should also be noted that in this text, relational terms such as first and second etc. are only used to distinguish one entity or operation from another, and do not necessarily require or imply that these entities or operations, any such actual relationship or order exists. Moreover, the term "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements but also other elements not expressly listed, Or also include elements inherent in such a process, method, article or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

In the above embodiments, descriptions of directions such as "upper" and "lower" are based on what is shown in the accompanying drawings.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention.

Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. a hydropower station water filter repair processing device, is characterized in that, comprises support positioning mechanism (1) and nozzle mechanism; Described support positioning mechanism (1) comprises telescopic assembly; Described nozzle mechanism comprises nozzle body ( 3), the power input end of the telescopic assembly is configured to be fixedly and axially slidably connected with the nozzle body (3) in the circumferential direction, and the telescopic assembly is configured to be driven by the nozzle body (3) to To stretch. 2. The water filter repairing and processing device of a hydropower station according to claim 1, characterized in that, the support positioning mechanism (1) comprises a sleeve (11) and a power input piece (6); the power input piece (6) ) is the power input end of the telescopic assembly; the telescopic assembly includes a telescopic rod (21), one end of the telescopic rod (21) is used to abut against the repaired pipe section, and the telescopic rod (21) is connected to the The sleeve (11) is slidingly connected, and the telescopic rod (21) is used to limit the radial position of the power input member (6) relative to the sleeve (11). 3. The water filter repairing and processing device of a hydropower station according to claim 2, characterized in that, said telescopic rods (21) are multiple and divided into multiple groups, one group has two said telescopic rods (21), The two telescopic rods (21) of the same group are distributed on both sides of the power input member (6) and parallel to each other, and the two telescopic rods (21) of the same group interfere with the repaired said pipe section; Different groups of said telescopic rods (21) are distributed along the central axis of the sleeve (11). 4. The repairing and processing device for a water filter in a hydropower station according to claim 3, characterized in that, the telescopic rod (21) is slidingly connected to the opposite side walls of the sleeve (11); the power input member (6) It has a toothed part, and the telescopic rod (21) has a rack part, and the rack part meshes with the toothed part. 5. The water filter repairing and processing device of a hydropower station according to claim 2, characterized in that, one of the outer peripheral surface of the nozzle body (3) and the power input member (6) is provided with a peripheral There are two transmission convex parts, one of which is provided with a circumferential transmission concave part, and the circumferential transmission convex part can cooperate with the circumferential transmission concave part. 6. The water filter repairing and processing device of a hydropower station according to claim 5, characterized in that, one end of the nozzle body (3) is provided with a nozzle (4), and the nozzle body (3) is fixedly sleeved There is an anti-off ring (7) and a clamping part (32), the anti-off ring (7) is located between the support positioning mechanism (1) and the nozzle (4), and the anti-off ring (7) When abutting against the support positioning mechanism (1), the circumferential transmission convex part is disengaged from the circumferential transmission concave part; the clamping part (32) is located at the On one side of the nozzle (4), when the clamping portion (32) abuts against the support and positioning mechanism (1), the circumferential transmission convex part cooperates with the circumferential transmission concave part. 7. The water filter repairing and processing device of a hydropower station according to claim 6, characterized in that, one of the anti-off ring (7) and the power input member (6) is provided with a circumferential stop Recesses, one of which is provided with a circumferential stop protrusion, when the anti-off ring (7) abuts against the support positioning mechanism (1), the circumferential stop recess and the circumferential stop protrusion Cooperate. 8. according to any one of claim 1-7 described repair processing device for water filter of hydropower station, it is characterized in that, described nozzle mechanism also comprises barrel (5) and constant pressure injector (8), and described material One end of the barrel (5) communicates with the nozzle body (3), and the other end of the barrel (5) is connected with the constant pressure injector (8). 9. A method for repairing a water filter in a hydropower station, characterized in that, the method for repairing a water filter in a hydropower station uses the repairing processing device for a water filter in a hydropower station according to any one of claims 1-8, and the method for repairing a water filter in a hydropower station include: Obtain information on defective pipe sections; Prepare repair pipe sections; Use any one of the hydropower station water filter repair processing device in the claim 1-9 to spray the anti-wear coating on the inner wall of the repair pipe section; The repair pipe section will be installed on site. 10. The device for repairing and processing the water filter of a hydropower station according to claim 9, characterized in that the thickness of the anti-wear coating sprayed on the inner wall of the repaired pipe section is greater than or equal to 0.3mm.

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