A pipe cleaning device for use in a wet flue gas desulfurization plant of a thermal power plant

Abstract

The application relates to the technical field of pipeline cleaning, in particular to a pipeline cleaning device used in a wet desulfurization equipment of a thermal power plant. The device comprises a pushing assembly, a spraying assembly and a locking piece. The pushing assembly comprises a push rod, the locking piece connected with one end of the push rod and a fixed threaded column installed on the locking piece. The spraying assembly is matched with the locking piece. The device can effectively remove the products on the inner wall of the pipeline through the combined action of flushing and brushing, and the pipeline can be flushed to avoid damage caused by long-time use.

Description

Technical Field

[0001] This invention relates to the field of pipeline cleaning technology, and in particular to a pipeline cleaning device for use in wet desulfurization equipment in thermal power plants. Background Technology

[0002] Currently, there are dozens of flue gas desulfurization technologies for thermal power plants, with wet desulfurization technology being relatively mature and consistently holding a dominant position. However, due to its low solubility, wet desulfurization technology is prone to scaling and blockage in the desulfurization tower and pipelines, which can severely lead to equipment corrosion.

[0003] In existing wet desulfurization processes, scaling inside the pipe walls cannot be avoided during production. The resulting scale is difficult to treat, leading to severe corrosion inside the pipes and frequent leaks or cracks. Summary of the Invention

[0004] In view of the problems existing in the prior art, the present invention is proposed.

[0005] Therefore, the technical problem to be solved by the present invention is that in the existing wet desulfurization process, it is impossible to avoid the phenomenon of scaling inside the pipe wall. The generated products are difficult to treat, which often leads to severe corrosion inside the pipe and leakage or cracks.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a pipeline cleaning device for wet desulfurization equipment in thermal power plants, comprising: a pushing assembly, including a push rod, a locking member connected to one end of the push rod, and a fixed threaded post installed on the locking member; and a spraying assembly, which cooperates with the locking member.

[0007] As a preferred embodiment of the pipeline cleaning device for wet desulfurization equipment in thermal power plants according to the present invention, wherein: one end of the push rod is provided with a push rod connecting block, and the upper end of the push rod is provided with a push rod engaging threaded hole.

[0008] As a preferred embodiment of the pipeline cleaning device for wet desulfurization equipment in thermal power plants according to the present invention, wherein: the side of the push rod connecting block is provided with a push rod engaging groove, and the upper end of the push rod connecting block is provided with a push rod connecting threaded hole.

[0009] As a preferred embodiment of the pipeline cleaning device for wet desulfurization equipment in thermal power plants according to the present invention, the locking component includes a locking post and a snap-fit ​​semicircular ring, wherein the snap-fit ​​semicircular ring cooperates with the locking post.

[0010] As a preferred embodiment of the pipeline cleaning device for wet desulfurization equipment in thermal power plants according to the present invention, the locking column includes a through groove, a locking threaded hole and an arc-shaped locking block. The through groove is disposed on one side of the locking column, the arc-shaped locking block is disposed on the other side, the locking threaded hole is disposed on the circumferential surface of the locking column, and the fixing threaded column cooperates with the locking threaded hole.

[0011] As a preferred embodiment of the pipeline cleaning device for wet desulfurization equipment in thermal power plants according to the present invention, wherein: a locking engagement block is further provided on the side of the locking column, a locking engagement groove is provided on the side of the locking engagement block, a first threaded hole is provided through the upper end of the locking engagement block, one end of the push rod connecting block is inserted into the locking engagement groove, and a bolt passes through the first threaded hole and engages with the push rod engagement threaded hole.

[0012] As a preferred embodiment of the pipeline cleaning device for wet desulfurization equipment in thermal power plants according to the present invention, wherein: the snap-fit ​​semicircular ring is provided with snap-fit ​​threaded holes;

[0013] The arc-shaped locking block is provided with an arc-shaped threaded hole, and the bolt passes through the locking threaded hole and connects to the arc-shaped threaded hole.

[0014] As a preferred embodiment of the pipeline cleaning device for wet desulfurization equipment in thermal power plants according to the present invention, a rubber pad is provided at one end of the fixed threaded column.

[0015] As a preferred embodiment of the pipeline cleaning device for wet desulfurization equipment in thermal power plants according to the present invention, the spraying assembly includes a spraying column, a sliding block and a water-repellent component, the sliding block and the water-repellent component are respectively installed on the spraying column, and multiple sliding blocks are provided;

[0016] It also includes a cleaning assembly, which includes a rotating ring and a brush head, the rotating ring being rotatably connected to the spray column, and the brush head being connected to the rotating ring.

[0017] As a preferred embodiment of the pipeline cleaning device for wet desulfurization equipment in thermal power plants according to the present invention, the spray column includes a sliding connecting column and a sliding expansion groove. The sliding connecting column is disposed on the circumferential surface of the spray column, and the sliding expansion groove is disposed on the upper end of the sliding connecting column. Multiple sliding connecting columns are provided, and the sliding connecting column is placed between the snap-fit ​​semicircular ring and the arc-shaped snap block and fixed by bolts.

[0018] The beneficial effects of the present invention are as follows: This device can effectively remove the products generated on the inner wall of the pipe by means of rinsing and brushing, causing them to fall off and be discharged, and also rinses the pipe to prevent damage from long-term use. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0020] Figure 1 This is a schematic diagram of the assembly structure of a pipeline cleaning device for a wet desulfurization equipment in a thermal power plant, provided by an embodiment of the present invention.

[0021] Figure 2 A schematic diagram of the pushing component in a pipeline cleaning device for a wet desulfurization equipment in a thermal power plant, provided by an embodiment of the present invention;

[0022] Figure 3 A schematic diagram of the pushing component, spraying component, and cleaning component of a pipeline cleaning device for a wet desulfurization equipment in a thermal power plant, provided by an embodiment of the present invention;

[0023] Figure 4 A schematic diagram of the sliding block in a pipeline cleaning device for a wet desulfurization equipment in a thermal power plant, provided by an embodiment of the present invention;

[0024] Figure 5 A schematic diagram of the spray column in a pipeline cleaning device for wet desulfurization equipment in a thermal power plant, provided by an embodiment of the present invention;

[0025] Figure 6 A schematic diagram of the structure of the condensate draining component and cleaning assembly in a pipeline cleaning device for a wet desulfurization equipment in a thermal power plant, provided by an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the cross-sectional connection between the condensate drain and the cleaning components in a pipeline cleaning device for a wet desulfurization equipment in a thermal power plant, as provided in one embodiment of the present invention. Detailed Implementation

[0027] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0028] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the present invention will be described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure will be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0030] Furthermore, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0031] Example 1

[0032] Reference Figures 1-2 This embodiment provides a pipeline cleaning device push assembly 300 and a spray assembly 100 for use in a wet desulfurization equipment in a thermal power plant.

[0033] The push assembly 300 includes a push rod 301, a locking member 302 connected to one end of the push rod 301, and a fixing threaded post 303 mounted on the locking member 302. Multiple locking members 302 and fixing threaded posts 303 are provided.

[0034] The spray assembly 100 is engaged with the locking component 302.

[0035] A push rod connecting block 301a is provided at one end of the push rod 301, and a push rod engaging threaded hole 301b is provided at the upper end of the push rod 301, with the push rod engaging threaded hole 301b close to one end of the push rod 301.

[0036] The push rod connecting block 301a has a push rod engaging groove 301a-1 on its side and a push rod connecting threaded hole 301a-2 through its upper end.

[0037] The locking component 302 includes a locking pin 302a and a snap-fit ​​semicircular ring 302b. The snap-fit ​​semicircular ring 302b cooperates with the locking pin 302a, and multiple snap-fit ​​semicircular rings 302b are provided.

[0038] The locking post 302a includes a through groove 302a-1, a locking threaded hole 302a-2, and an arc-shaped locking block 302a-3. The through groove 302a-1 is provided on one side of the locking post 302a, and the arc-shaped locking block 302a-3 is provided on the other side. The locking threaded hole 302a-2 is provided on the circumferential surface of the locking post 302a. The fixing threaded post 303 cooperates with the locking threaded hole 302a-2. Multiple locking threaded holes 302a-2 are provided along the circumferential surface of the locking post 302a and communicate with the through groove 302a-1. Multiple arc-shaped locking blocks 302a-3 are provided on the side of the locking post 302a.

[0039] The locking post 302a is also provided with a locking engagement block 302a-4 on its side. The locking engagement block 302a-4 is provided with a locking engagement groove 302a-41 on its side. The upper end of the locking engagement block 302a-4 is provided with a first threaded hole 302a-42. One end of the push rod connecting block 301a is inserted into the locking engagement groove 302a-41. The bolt passes through the first threaded hole 302a-42 and engages with the push rod engagement threaded hole 301b.

[0040] The snap-fit ​​semicircular ring 302b is provided with a snap-fit ​​threaded hole 302b-1; the arc-shaped snap block 302a-3 is provided with an arc-shaped threaded hole 302a-31, and the bolt passes through the snap-fit ​​threaded hole 302b-1 and connects with the arc-shaped threaded hole 302a-31.

[0041] A rubber pad 303a is provided at one end of the fixed threaded post 303.

[0042] In use, the water pipe is placed in the through groove 302a-1, and the water pipe is clamped by rotating the fixed threaded post 303. The rubber pad 303a acts as a buffer to avoid damage to the water pipe. The end of the push rod 301 with the push rod connecting threaded hole 301a-2 is inserted into the locking engagement groove 302a-41 and the push rod 301 and locking post 302a are fixed by bolts. The push rod 301 can be pulled to control the position of the water pipe in the pipe, which is convenient for cleaning the buildup on the inner wall of the pipe. When it is necessary to extend further into the inner wall of the pipe, the end of another push rod 301 with the push rod connecting threaded hole 301a-2 is inserted into the push rod engagement groove 301a-1. The two push rods 301 are fixed by bolts that engage with the push rod connecting threaded hole 301a-2 and the push rod engagement threaded hole 301b, thereby increasing the distance to facilitate the extension into the pipe for cleaning.

[0043] Example 2

[0044] Reference Figures 1 to 7 This is the second embodiment of the present invention. Based on the previous embodiment, this embodiment provides an implementation method for a pipeline cleaning device in a wet desulfurization equipment of a thermal power plant.

[0045] Spraying assembly 100 and sweeping assembly 200.

[0046] The component 100 includes a jet column 101, a sliding block 102, and a hydrophobic element 103. The sliding block 102 and the hydrophobic element 103 are respectively installed on the jet column 101, and multiple sliding blocks 102 are provided.

[0047] The cleaning assembly 200 includes a rotating ring 201 and a brush head 202. The rotating ring 201 is rotatably connected to the spray column 101, and the brush head 202 is connected to the rotating ring 201. Multiple brush heads 202 are provided.

[0048] The spray column 101 includes a sliding connecting column 101a and a sliding expansion groove 101b. The sliding connecting column 101a is disposed on the circumferential surface of the spray column 101, and the sliding expansion groove 101b is disposed on the upper end of the sliding connecting column 101a. Multiple sliding connecting columns 101a are provided. The sliding connecting column 101a is placed between the snap-fit ​​semicircular ring 302b and the arc-shaped snap block 302a-3 and fixed by bolts.

[0049] Multiple sliding connecting columns 101a are equally spaced.

[0050] The sliding block 102 includes a sliding spring post 102a, a sliding inclined surface 102b, and a ball bearing 102c. The sliding spring post 102a is disposed on the inner circumferential surface of the sliding block 102, and the ball bearing 102c is disposed on the outer circumferential surface of the sliding block 102. The sliding inclined surface 102b is disposed at one end of the sliding block 102. Two sliding inclined surfaces 102b are symmetrically arranged along the center line of the sliding block 102, and multiple balls bearing 102c are provided.

[0051] The sliding spring column 102a is placed inside the sliding telescopic groove 101b.

[0052] The jet column 101 also includes a water injection tank 101c, a flow channel 101d, a placement channel 101e, a lower through channel 101f, and a connecting channel 101g. The water injection tank 101c is located on one side of the jet column 101, and the connecting channel 101g is located on the other side of the jet column 101. The flow channel 101d is located inside the jet column 101 and communicates with the water injection tank 101c. The placement channel 101e is located inside the jet column 101 and communicates with the flow channel 101d. The lower through channel 101f is located inside the jet column 101 and communicates with the placement channel 101e and the connecting channel 101g at both ends.

[0053] The drainage component 103 includes a guide impeller 103a, a drainage rod 103b, and a nozzle 103c. The guide impeller 103a is connected to one end of the drainage rod 103b, and the nozzle 103c is connected to the other end of the drainage rod 103b.

[0054] The guide impeller 103a is placed in the placement groove 101e, the drainage rod 103b is inserted into the connecting groove 101g, and the nozzle 103c is located outside the connecting groove 101g.

[0055] A hollow water jet column 103c-1 is provided on the circumferential surface of the nozzle 103c, and a hollow water injection groove 103c-2 is provided on the side of the nozzle 103c. A water drainage rod 103b is fixedly connected in the hollow water injection groove 103c-2, and multiple hollow water jet columns 103c-1 are provided.

[0056] The guide vane 103a is the specific shape of a water turbine impeller in the prior art, which will not be described in detail here.

[0057] In use, the water pipe is passed through the through groove 302a-1 and inserted into the water injection tank 101c, and fixedly connected to the intermediate column 101. The water pipe is clamped by rotating the fixed threaded column 303. The rubber pad 303a acts as a buffer to avoid damage to the water pipe. The end of the push rod 301 with the push rod connecting threaded hole 301a-2 is inserted into the locking engagement groove 302a-41 and the push rod 301 and locking column 302a are fixed by bolts. Then, the sliding connecting column 101a is placed in the arc-shaped locking block 302a-3. The snap-fit ​​semi-circular ring 302b engages with the arc-shaped locking block 302a-3 and is fixed by bolts, thereby clamping the sliding connecting column 101a. By fixing the three sliding connecting columns 101a in sequence, the entire spray assembly 100 can be moved back and forth.

[0058] The entire spraying assembly 100 is inserted into the ash conveying pipe. After the sliding block 102 is compressed, the sliding spring column 102a moves within the sliding expansion groove 101b to accommodate the diameter of the ash conveying pipe. The ball bearings 102c on the sliding block 102 are in close contact with the inner wall of the ash conveying pipe. Then, the water pump is turned on, and water flows from the water pipe into the flow channel 101d and then into the water tank on the guide impeller 103a in the placement groove 101e, causing the guide impeller 103a to rotate. At this time, the drain rod 103b and the nozzle 103c rotate accordingly. Water flows sequentially through the lower channel 101f and the connecting channel 101g, finally flowing into the hollow water injection tank 103c-2, and is sprayed out from the hollow water jet column 103c-1. By changing the power of the water pump, the rotation speed of the entire condensate 103 and the water pressure of the water jet from the hollow water jet column 103c-1 are increased, forming a water gun to rotate and flush the inner wall of the pipe. Pulling the push rod 301 controls the spray assembly 100 to move back and forth in the pipe of the wet desulfurization equipment, which can carefully flush the inner wall of the pipe, remove the generated products, and avoid damage to the pipe.

[0059] Example 3

[0060] Reference Figures 1 to 7 This is the third embodiment of the present invention. Based on the above two embodiments, this embodiment provides an implementation method for a pipeline cleaning device in a wet desulfurization equipment of a thermal power plant.

[0061] A support column 101f-1 is provided in the lower channel 101f, and a support connecting channel 101f-11 is provided through the side of the support column 101f-1. The drainage rod 103b passes through the support connecting channel 101f-11.

[0062] A retaining ring 101h is provided on the circumferential surface of the spray column 101, and a retaining groove 101h-1 is provided on the circumferential surface of the retaining ring 101h. A second gear 101g-11 is provided in the retaining groove 101h-1, and the retaining groove 101h-1 is partially connected to the support connecting groove 101f-11.

[0063] A first gear 103b-1 is provided on the circumferential surface of the drainage rod 103b. The first gear 103b-1 is placed in the support connecting groove 101f-11 and meshes with the second gear 101g-11.

[0064] The rotating ring 201 includes an inner rotating groove 201a, a rotating retaining tooth 201b, and a fixed post 201c. The inner rotating groove 201a is located on the inner circumferential surface of the rotating ring 201, the rotating retaining tooth 201b is located in the inner rotating groove 201a, and the fixed post 201c is located on the outer circumferential surface of the rotating ring 201. The retaining ring 101h is placed in the inner rotating groove 201a, the rotating retaining tooth 201b is placed in the retaining groove 101h-1 and meshes with the second gear 101g-11, and the fixed post 201c is provided with a threaded hole. The brush head 202 is threadedly connected to the fixed post 201c for easy replacement of the brush head 202. Multiple fixed posts 201c are provided.

[0065] In use, the entire spray assembly 100 is inserted into the ash conveying pipe. When the sliding block 102 is compressed, the sliding spring column 102a moves within the sliding expansion groove 101b to accommodate the diameter of the ash conveying pipe. The ball bearings 102c on the sliding block 102 are in close contact with the inner wall of the ash conveying pipe. Then, the water pump is turned on, and water flows from the water pipe into the flow channel 101d, then into the water tank on the guide impeller 103a in the placement groove 101e, causing the guide impeller 103a to rotate. At this time, the drain rod 103b and the nozzle 103c rotate accordingly. The water then flows sequentially through the lower channel 101f and the connecting channel 101g, finally flowing into the hollow water injection tank 103c-2, from the spray... The hollow water column 103c-1 sprays out, and by providing power to the water pump, the rotation speed of the entire condensate 103 and the water pressure of the water jet from the hollow water column 103c-1 are increased, forming a water gun to rotate and rinse the inner wall of the pipe. During the rotation of the condensate rod 103b, the first gear 103b-1 set on the condensate rod 103b rotates along with it and drives the second gear 101g-11 to rotate. The second gear 101g-11 drives the rotating tooth 201b to rotate, thereby causing the entire rotating ring 201 to rotate. The brush head 202 cleans the inner wall of the pipe, forming the effect of first rinsing with water and then scrubbing with the brush head 202.

[0066] Preferably, in order to make the rotating ring 201 and the hydrophobic element 103 rotate better, bearings can be added to the relevant rotating parts to reduce frictional resistance.

[0067] This device effectively removes and flushes out the deposits on the inner wall of the pipe through the combined action of rinsing and scrubbing, and also flushes the pipe to prevent damage from prolonged use.

[0068] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0069] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0070] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0071] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A pipe cleaning device for use in wet desulfurization equipment in thermal power plants, characterized in that: include, The push assembly (300) includes a push rod (301), a locking member (302) connected to one end of the push rod (301), and a fixed threaded post (303) mounted on the locking member (302). The spray assembly (100) cooperates with the locking member (302); The locking element (302) includes a locking pin (302a) and a snap-fit ​​semicircular ring (302b), wherein the snap-fit ​​semicircular ring (302b) cooperates with the locking pin (302a); The locking post (302a) includes a through groove (302a-1), a locking threaded hole (302a-2), and an arc-shaped locking block (302a-3). The through groove (302a-1) is disposed on one side of the locking post (302a), the arc-shaped locking block (302a-3) is disposed on the other side, the locking threaded hole (302a-2) is disposed on the circumferential surface of the locking post (302a), and the fixing threaded post (303) cooperates with the locking threaded hole (302a-2). The spray assembly (100) includes a spray column (101), a sliding block (102), and a hydrophobic element (103). The sliding block (102) and the hydrophobic element (103) are respectively installed on the spray column (101), and multiple sliding blocks (102) are provided. It also includes a cleaning assembly (200), which includes a rotating ring (201) and a brush head (202), the rotating ring (201) being rotatably connected to the spray column (101), and the brush head (202) being connected to the rotating ring (201).

2. The pipeline cleaning device for wet desulfurization equipment in thermal power plants according to claim 1, characterized in that: One end of the push rod (301) is provided with a push rod connecting block (301a), and the upper end of the push rod (301) is provided with a push rod engaging threaded hole (301b).

3. The pipeline cleaning device for wet desulfurization equipment in thermal power plants according to claim 2, characterized in that: The push rod connecting block (301a) has a push rod engaging groove (301a-1) on its side, and a push rod connecting threaded hole (301a-2) is provided through the upper end of the push rod connecting block (301a).

4. The pipeline cleaning device for wet desulfurization equipment in thermal power plants according to claim 1, characterized in that: The locking pin (302a) is also provided with a locking engagement block (302a-4) on its side. The locking engagement block (302a-4) is provided with a locking engagement groove (302a-41) on its side. The upper end of the locking engagement block (302a-4) is provided with a first threaded hole (302a-42). One end of the push rod connecting block (301a) is inserted into the locking engagement groove (302a-41). The bolt passes through the first threaded hole (302a-42) and engages with the push rod engagement threaded hole (301b).

5. The pipeline cleaning device for wet desulfurization equipment in thermal power plants according to claim 4, characterized in that: The snap-fit ​​semicircular ring (302b) is provided with a snap-fit ​​threaded hole (302b-1); The arc-shaped locking block (302a-3) is provided with an arc-shaped threaded hole (302a-31), and the bolt passes through the locking threaded hole (302b-1) and connects to the arc-shaped threaded hole (302a-31).

6. The pipeline cleaning device for wet desulfurization equipment in thermal power plants according to claim 5, characterized in that: A rubber pad (303a) is provided at one end of the fixed threaded post (303).

7. The pipeline cleaning device for wet desulfurization equipment in thermal power plants according to claim 1, characterized in that: The spray column (101) includes a sliding connecting column (101a) and a sliding telescopic groove (101b). The sliding connecting column (101a) is disposed on the circumferential surface of the spray column (101), and the sliding telescopic groove (101b) is disposed on the upper end of the sliding connecting column (101a). Multiple sliding connecting columns (101a) are provided. The sliding connecting column (101a) is placed between the snap-fit ​​semicircular ring (302b) and the arc-shaped snap block (302a-3) and fixed by bolts.

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