An auxiliary tooling and an installation method for the basic sealing plate of a drum-shaped filter screen

Abstract

The present invention relates to the technical field of nuclear power plants, and particularly relates to an auxiliary tooling and an installation method for the basic sealing plate of a drum-shaped filter screen. An installation method for the basic sealing plate of a drum-shaped filter screen provided by the present invention includes the following steps: S1: roughen the wall surface of the chamber at the installation position of the basic sealing plate of the drum-shaped filter screen; S2: hoist all the basic sealing plates to the bottom of the drum-shaped filter screen chamber, place one or more basic sealing plates on the side frame of the drum-shaped filter screen at the bottom of the drum-shaped filter screen chamber, then use screws and nuts to fix the first long holes on the auxiliary tooling to the basic sealing plate, and then use screws and nuts to fix the second long holes on the auxiliary tooling to the side frame of the drum-shaped filter screen, and rotate the drum-shaped filter screen according to the number of the installed basic sealing plates. This installation method for the basic sealing plate of the drum-shaped filter screen not only meets the requirements of on-site construction and design, but also greatly improves the production efficiency, reduces the construction cost and risk, and ensures the construction quality.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear power plants, and particularly relates to an auxiliary tooling and a method for installing a foundation sealing plate of a drum-shaped filter screen. Background Art

[0002] The foundation sealing plates of the combined pump house of the nuclear power unit of the "Hualong One" reactor type are arc-shaped plates, a total of 34 pieces, each piece weighing 85 Kg, and are installed on the side walls of the drum screen chamber. From the bottom to the top of the chamber, the overall drop is about 23.38 m.

[0003] Currently, when installing the foundation sealing plates, hemp ropes or slings are used to hoist the foundation sealing plates into the gap between the wall surface and the main frame of the drum-shaped filter screen, and then anchor bolts are used to fix the foundation sealing plates to the wall surface of the drum screen chamber.

[0004] However, due to the very narrow space between the main frame of the drum-shaped filter screen and the wall surface of the drum screen chamber, using hemp ropes or slings to hoist and install the foundation sealing plates is extremely inconvenient and inefficient on site. Summary of the Invention

[0005] (1) The problem to be solved by the present invention is that due to the very narrow space between the main frame of the drum-shaped filter screen and the wall surface of the drum screen chamber, using hemp ropes or slings to hoist and install the foundation sealing plates is extremely inconvenient and inefficient on site.

[0006] (2) Technical Solution

[0007] An auxiliary tooling for assisting in the installation of a foundation sealing plate on a drum-shaped filter screen, including a first plate body and a second plate body, the first plate body and the second plate body are vertically arranged, and the first plate body and the second plate body form an L-shaped plate;

[0008] A first long hole is opened on the first plate body, and a second long hole and a third long hole are successively opened on the second plate body, and the length directions of the first long hole, the second long hole, and the third long hole are the same.

[0009] According to an embodiment of the present invention, the first long hole, the second long hole, and the third long hole are all in the shape of long strip holes, and the first long hole, the second long hole, and the third long hole are all opened along the length direction of the first plate body.

[0010] A method for installing a foundation sealing plate of a drum-shaped filter screen, using the above-mentioned auxiliary tooling, includes the following steps:

[0011] S1: Roughcast the wall surface of the chamber at the installation position of the foundation sealing plate of the drum-shaped filter screen;

[0012] S2: Lift all the multiple basic sealing plates to the bottom of the drum screen chamber. Place one or more basic sealing plates on the side frame of the drum-shaped filter screen at the bottom of the drum screen chamber. Then, use screws and nuts to fix the first long holes on the auxiliary tooling to the basic sealing plates. Next, use screws and nuts to fix the second long holes on the auxiliary tooling to the side frame of the drum-shaped filter screen. Rotate the drum-shaped filter screen according to the number of installed basic sealing plates.

[0013] S3: Repeat step S2 until all the basic sealing plates are fixed to the side frame of the drum-shaped filter screen.

[0014] S4: Rotate the drum-shaped filter screen to the set position. Then, remove the screws and nuts in the second long holes 201 on all the auxiliary tooling. Adjust the relative position between the basic sealing plate and the side frame of the drum-shaped filter screen to the set distance. After that, use screws and bolts to fix the third long holes on the auxiliary tooling to the side frame of the drum-shaped filter screen.

[0015] S5: Adjust the positions between adjacent basic sealing plates, and then tighten the nuts on the screws in the third long holes.

[0016] S6: Stabilize the drum-shaped filter screen. Drill holes in the chamber wall and implant anchor bolts. Connect the anchor bolts to the basic sealing plates one by one. Then, remove the auxiliary tooling. Finally, formwork and grout the gap between the basic sealing plate and the chamber wall for fixation.

[0017] According to an embodiment of the present invention, screw holes adapted to the screws are provided on each of the basic sealing plates, and the position of the first long holes on the auxiliary tooling is determined according to the distance between the surface of the auxiliary tooling in contact with the side frame of the drum-shaped filter screen and the bolt holes on the basic sealing plate.

[0018] According to an embodiment of the present invention, a plurality of locking threaded holes are provided on the surface of the side frame of the drum-shaped filter screen in contact with the basic sealing plate, and the position of the second long holes on the auxiliary tooling is determined according to the distance between the locking threaded holes and the outer side surface of the side frame of the drum-shaped filter screen.

[0019] According to an embodiment of the present invention, the position of the third long holes on the auxiliary tooling is determined according to the relative installation distance between the basic sealing plate and the side frame of the drum-shaped filter screen.

[0020] According to an embodiment of the present invention, in step S4, a plurality of locking threaded holes are provided on the surface of the side frame of the drum-shaped filter screen in contact with the basic sealing plate. When adjusting the relative position between the basic sealing plate and the side frame of the drum-shaped filter screen, the locking threaded holes are aligned with the third long holes 202 on the auxiliary tooling.

[0021] According to an embodiment of the present invention, in step S4, the set distance between the basic sealing plate and the side frame of the drum-shaped filter screen is equal to the distance between the second long hole 201 and the third long hole 202 on the auxiliary tooling.

[0022] According to an embodiment of the present invention, in step S5, adjusting the positions of adjacent basic sealing plates includes pushing the basic sealing plates along the outer side surface of the side frame of the drum-shaped filter screen so that the side end faces of adjacent basic sealing plates are closely attached.

[0023] According to an embodiment of the present invention, a plurality of round holes are formed in each basic sealing plate. In step S6, the anchor bolts on the chamber wall pass through the round holes on the basic sealing plate.

[0024] Advantages of the present invention:

[0025] A method for installing a basic sealing plate of a drum-shaped filter screen provided by the present invention includes the following steps:

[0026] S1: Roughcast the chamber wall at the installation position of the basic sealing plate of the drum-shaped filter screen;

[0027] S2: Hoist all the basic sealing plates to the bottom of the drum net chamber. Place one or more basic sealing plates on the side frame of the drum-shaped filter screen at the bottom of the drum net chamber. Then use screws and nuts to fix the first long hole on the auxiliary tooling to the basic sealing plate. Next, use screws and nuts to fix the second long hole on the auxiliary tooling to the side frame of the drum-shaped filter screen. Rotate the drum-shaped filter screen according to the number of installed basic sealing plates;

[0028] S3: Repeat step S2 until all the basic sealing plates are fixed to the side frame of the drum-shaped filter screen;

[0029] S4: Rotate the drum-shaped filter screen to the set position. Then remove the screws and nuts in all the second long holes 201 on the auxiliary tooling. Adjust the relative position between the basic sealing plate and the side frame of the drum-shaped filter screen to the set distance. After that, use screws and bolts to fix the third long hole on the auxiliary tooling to the side frame of the drum-shaped filter screen;

[0030] S5: Adjust the positions of adjacent basic sealing plates, and then tighten the nuts on the screws in the third long holes;

[0031] S6: Stabilize the drum-shaped filter screen. Drill holes and implant anchor bolts on the chamber wall. Connect the anchor bolts to the basic sealing plates one by one. Then remove the auxiliary tooling. Finally, formwork and grout the gap between the basic sealing plate and the chamber wall for fixation.

[0032] Compared with the installation process of the previous basic sealing plate, it is possible to avoid hoisting the basic sealing plate in a narrow space. Since the space at the bottom of the drum mesh chamber is large, several basic sealing plates can be installed simultaneously when installing the basic sealing plate at the bottom. Moreover, it is simpler to position and install the basic sealing plate through the auxiliary tooling, without the need to use hoisting equipment to adjust the position of the basic sealing plate, the positioning is more accurate, the operation is simple, which not only meets the requirements of on-site construction and design, but also greatly improves production efficiency, reduces construction costs and risks, and ensures construction quality.

[0033] An auxiliary tooling provided by the present invention is used for auxiliary installation of a basic sealing plate on a drum-shaped filter mesh, and includes a first plate body and a second plate body. The first plate body and the second plate body are vertically arranged, and the first plate body and the second plate body form an L-shaped plate. A first long hole is opened on the first plate body, and a second long hole and a third long hole are successively opened on the second plate body. The length directions of the first long hole, the second long hole, and the third long hole are the same.

[0034] When using this auxiliary tooling for auxiliary installation of the basic sealing plate, it is no longer necessary to hoist the auxiliary tooling to accurately position the basic sealing plate. Moreover, it is more convenient and fast to use, its own cost is low, the complexity of installation is reduced, and production efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required to be used in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0036] Figure 1 The first perspective view of the auxiliary tooling provided by the embodiment of the present invention;

[0037] Figure 2 The second perspective view of the auxiliary tooling provided by the embodiment of the present invention.

[0038] Reference numerals: 1 - first plate body; 101 - first long hole; 2 - second plate body; 201 - second long hole; 202 - third long hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0040] Such as Figure 1and Figure 2 As shown, an embodiment of the present invention provides an auxiliary tooling for assisting in the installation of a basic sealing plate on a drum-shaped filter net, including a first plate body 1 and a second plate body 2. The first plate body 1 and the second plate body 2 are vertically arranged, and the first plate body 1 and the second plate body 2 form an L-shaped plate;

[0041] A first long hole 101 is provided on the first plate body 1, and a second long hole 201 and a third long hole 202 are sequentially provided on the second plate body 2. The length directions of the first long hole 101, the second long hole 201, and the third long hole 202 are the same.

[0042] Preferably, both the first plate body 1 and the second plate body 2 are rectangular plates. The width direction of the second plate body 2 is parallel to the length direction of the first plate body 1. The first long hole 101, the second long hole 201, and the third long hole 202 are all in the shape of long strip holes. The first long hole 101 is opened along the length direction of the first plate body 1, and the second long hole 201 and the third long hole 202 are both opened along the width direction of the second plate body 2.

[0043] Preferably, the first plate body 1 and the second plate body 2 are integrally formed, and the length of the first plate body 1 is greater than the width of the second plate body 2.

[0044] Optionally, the first plate body 1 is welded to the second plate body 2. The length of the first plate body 1 is the same as the width of the second plate body 2. Both the first plate body 1 and the second plate body 2 are carbon steel plates, and the manufacturing cost is low.

[0045] It should be noted that in the use state, at this time, the auxiliary tooling is as Figure 2 shown. The upper surface of the second plate body 2 is in contact with the side frame of the drum-shaped filter net, and the outer side surface of the first plate body 1 faces the basic sealing plate.

[0046] Specifically, at a position near the bottom of the basic sealing plate, a plurality of screw holes are sequentially opened along the basic sealing plate. The screw holes can allow screws to pass through. A plurality of locking threaded holes are opened on the surface of the drum-shaped filter net side frame in contact with the first plate body 1. The locking threaded holes are adapted to the screws, and the screws can be screwed into the locking threaded holes.

[0047] When initially fixing the basic sealing plate, the second long hole 201 on the second plate body 2 corresponds to the locking threaded hole on the drum-shaped filter net side frame. Then, a screw is used to pass through the second long hole 201 from bottom to top and be screwed and fixed into the locking threaded hole on the drum-shaped filter net side frame. Then, a nut is used to fix the second plate body 2 to the drum-shaped filter net side frame.

[0048] The first long hole 101 on the first plate body 1 corresponds to the screw hole at the lower end of the basic sealing plate. A screw is inserted from the outside of the basic sealing plate into the screw hole on the basic sealing plate and passes through the first long hole 101 on the first plate body 1. The diameter of the head of the screw is larger than the diameter of the screw hole on the basic sealing plate. Then, a nut is screwed onto the screw to fix the first plate body 1 to the basic sealing plate.

[0049] It should be noted that the position of the first long hole 101 is fixed. The position of the first long hole 101, etc. is determined according to the vertical distance between the side frame of the drum-shaped filter screen and the screw hole on the basic sealing plate, that is, the distance between the first long hole 101 and the upper surface of the second plate body 2 is equal to the vertical distance between the side frame of the drum-shaped filter screen and the screw hole on the basic sealing plate.

[0050] Preferably, the position of the second long hole 201 on the second plate body 2 is also set in advance. Specifically, the distance between the second long hole 201 and the outer side surface of the first plate body 1 is equal to the distance between the locking bolt hole on the side frame of the drum-shaped filter screen and the outer side surface of the side frame of the drum-shaped filter screen. To ensure that when initially fixing the basic sealing plate, the basic sealing plate can closely adhere to the outer side surface of the side frame of the drum-shaped filter screen, so as to reserve enough gaps for the drum-shaped filter screen to rotate to a suitable position.

[0051] Preferably, the distance between the second long hole 201 and the third long hole 202 on the second plate body 2 is determined according to the relative installation distance between the basic sealing plate and the side frame of the drum-shaped filter screen. Since there needs to be a certain distance between the basic sealing plate and the outer side surface of the side frame of the drum-shaped filter screen, the distance value between the basic sealing plate and the side frame of the drum-shaped filter screen is equal to the distance between the second long hole 201 and the third long hole 202. To ensure that when the third long hole 202 on the auxiliary tooling is fixed to the side frame of the drum-shaped filter screen, the distance between the basic sealing plate and the side frame of the drum-shaped filter screen can just reach the specified value.

[0052] This auxiliary tooling can assist in completing the installation work of the basic sealing plate, and has low manufacturing cost, is easy to disassemble and assemble, easy to carry during use, and is also simple and flexible in use and operation.

[0053] There is no need to hoist the auxiliary tooling to accurately position the basic sealing plate, and it is more convenient and fast to use, with low cost itself, reducing the complexity of installation and improving production efficiency.

[0054] The prerequisite for installing the basic sealing plate of the drum-shaped filter screen is that the main structure of the drum-shaped filter screen has been installed and all technical parameters meet the design requirements. The following details the installation method of the basic sealing plate of the drum-shaped filter screen:

[0055] Step 1: Roughly chisel the wall surface of the chamber adjacent to the installation position of the basic sealing plate of the drum-shaped filter screen.

[0056] Step 2: Hoist all the multiple basic sealing plates to the bottom of the drum screen chamber. First, place one basic sealing plate on the outer side of the side frame of the drum-shaped filter screen at the bottom of the drum screen chamber. Then, place the auxiliary tooling on the bottom of the side frame of the drum-shaped filter screen. Next, use screws and nuts to fix the first long hole 101 on the auxiliary tooling to the basic sealing plate, and then use screws and nuts to fix the second long hole 201 on the auxiliary tooling to the side frame of the drum-shaped filter screen. Then, rotate the drum-shaped filter screen to the next installation position and continue to install the next basic sealing plate. After that, select another basic sealing plate and so on until all the basic sealing plates are installed.

[0057] In Step 2, it is also possible to first fix the second long hole 201 on the auxiliary tooling to the side frame of the drum-shaped filter screen, and then fix the first long hole 101 on the auxiliary tooling to the basic sealing plate.

[0058] It should be noted that before fixing the basic sealing plate, it is necessary to adjust the position of the auxiliary tooling and the positional relationship between the auxiliary tooling and the basic sealing plate so that the second long hole 201 on the second plate body 2 corresponds to the locking threaded hole on the contact surface between the side frame of the drum-shaped filter screen and the second plate body 2. Then, adjust the height of the basic sealing plate so that the screw hole on the basic sealing plate corresponds to the first long hole 101 on the first plate body 1. Only after that can screws and nuts be used for fixation.

[0059] Among them, when fixing the first long hole 101 on the auxiliary tooling to the basic sealing plate, a screw is inserted from the outside of the basic sealing plate into the screw hole on the basic sealing plate and passes through the first long hole 101 on the first plate body 1. The diameter of the screw head is larger than the diameter of the screw hole on the basic sealing plate and thus cannot pass through the basic sealing plate. Then, a nut is screwed into the screw, and the nut and the screw cooperate to fix the first plate body 1 to the basic sealing plate.

[0060] When fixing the second long hole 201 on the auxiliary tooling to the side frame of the drum-shaped filter screen, a screw is passed through the second long hole 201 from bottom to top and screwed and fixed into the locking threaded hole on the side frame of the drum-shaped filter screen, and then a nut is used to fix the second plate body 2 to the side frame of the drum-shaped filter screen.

[0061] It should be noted that the basic sealing plate can be hoisted to the bottom of the drum screen chamber after the installation of the drum screen main structure, or it can be hoisted to the bottom of the drum screen chamber before the installation of the drum screen main structure. Compared with the traditional method of hoisting the basic sealing plate at the top of the drum screen chamber, since the space at the bottom of the drum screen chamber is large, several basic sealing plates can be installed simultaneously when installing the basic sealing plate at the bottom. For example, two adjacent basic sealing plates can be installed simultaneously. After the installation of these two adjacent basic sealing plates is completed, the drum screen is rotated to the next installation position. And it is simpler to position and install the basic sealing plate through the auxiliary tooling, without the need to adjust the position of the basic sealing plate by the hoisting equipment, and the positioning is more accurate.

[0062] Step 3: After all the basic sealing plates are fixedly installed, rotate the drum screen to the set position, then remove the screws and nuts in the second long holes 201 of all the auxiliary toolings, adjust the relative position between the basic sealing plate and the side frame of the drum screen to the set distance, and then use screws and bolts to fix the third long holes 202 on the auxiliary tooling to the side frame of the drum screen.

[0063] It should be noted that the basic sealing plate forms a three-quarter circular ring around the drum screen, that is, the basic sealing plate does not go around the drum screen for a full circle.

[0064] After all the basic sealing plates are fixedly installed, the drum screen needs to be rotated so that the drum screen rotates to the grouting position. Considering that when the drum screen is rotated, the basic sealing plate and the wall surface of the drum screen chamber will rub against each other due to the small gap, which will damage the basic sealing plate. Therefore, first fix the second long holes 201 on the auxiliary tooling to the side frame of the drum screen, so that the basic sealing plate is closely attached to the outer side surface of the side frame of the drum screen, reducing the gap between the side frame of the drum screen and the basic sealing plate. In this way, when the drum screen is rotated, the basic sealing plate will not be damaged.

[0065] In Step 3, when adjusting the installation position of the basic sealing plate and the side frame of the drum screen, it needs to be adjusted one by one. Specifically, first remove the screws and nuts in the second long holes 201 of one auxiliary tooling, then push the basic sealing plate outward, driving the auxiliary tooling to move outward, so that the locking bolt holes on the surface where the side frame of the drum screen contacts the basic sealing plate correspond to the third long holes 202 on the auxiliary tooling. Then use a screw to pass through the third long hole 202 from bottom to top and screw it into the locking threaded hole on the side frame of the drum screen, and then use a nut to fix the auxiliary tooling to the side frame of the drum screen. Then adjust the next basic sealing plate until the position adjustment between all the basic sealing plates and the side frame of the drum screen is completed.

[0066] It should be noted that a certain distance needs to be maintained between the base sealing plate and the outer side surface of the drum filter screen side frame. Therefore, it is necessary to ensure that the distance value from the base sealing plate to the drum filter screen side frame is equal to the distance between the second long hole 201 and the third long hole 202, so as to ensure that when the third long hole 202 on the auxiliary tooling is fixed to the drum filter screen side frame, a set distance value can be left between the base sealing plate and the drum filter screen side frame.

[0067] Since the distance from the second long hole 201 to the third long hole 202 on each auxiliary tooling is the same, after the adjustment in step three, the distances between all the base sealing plates and the outer side surface of the drum filter screen side frame are the same, so as to ensure that the distance between the base sealing plate and the drum filter screen side frame meets the set distance.

[0068] Step four: Loosen the nuts on the drum filter screen side frame so that the auxiliary tooling and the base sealing plate can move relative to the drum filter screen side frame, and then adjust the positions between adjacent base sealing plates. Finally, tighten the nuts on the screws in the third long hole 202.

[0069] When adjusting the positional relationship between the base sealing plates, it needs to be adjusted sequentially. Specifically, the first base sealing plate remains stationary, then loosen the nut between the auxiliary tooling on the second base sealing plate and the drum filter screen side frame, then push the second base sealing plate towards the first base sealing plate so that the side end face of the second base sealing plate is in close contact with the side end face of the first base sealing plate, and then tighten the nut so that the auxiliary tooling is fixed to the drum filter screen side frame again. By analogy, adjust the distances between all the base sealing plates to ensure that adjacent base sealing plates can be in close contact and reduce the gap between adjacent base sealing plates.

[0070] Step five: After the base sealing plate is accurately positioned according to the design requirements, stabilize the drum filter screen so that it does not rotate, drill holes in the chamber wall surface and implant anchor bolts, and connect each anchor bolt to the base sealing plate one by one to fix the base sealing plate.

[0071] It should be noted that a plurality of circular holes are evenly arranged at equal distances along the lower end of each base sealing plate. A plurality of anchor bolts are evenly implanted on the chamber wall surface, and the base sealing plate can be fixed to the wall surface by connecting the anchor bolts to the base sealing plate.

[0072] Specifically, when implanting the anchor bolts, it is necessary to drill holes in the wall surface according to the distance between the circular holes on the base sealing plate to ensure that the anchor bolts can be connected between the holes on the wall surface and the circular holes.

[0073] Step six: Remove the auxiliary tooling, and formwork and grout the gap between the base sealing plate and the chamber wall surface for fixation.

[0074] When removing the auxiliary tooling, unscrew the nut between the basic sealing plate and the auxiliary tooling, then pull out the bolt on the basic sealing plate. After that, unscrew the nut between the auxiliary tooling and the drum-shaped filter screen, pull out the screw rod on the drum-shaped filter screen, and then remove the auxiliary tooling.

[0075] When installing the basic sealing plate according to the above method, compared with the conventional installation process of the basic sealing plate, it is possible to avoid hoisting the basic sealing plate in a narrow space, which not only meets the requirements of on-site construction and design, but also greatly improves production efficiency, reduces construction costs and risks, and ensures construction quality.

[0076] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0077] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the connection inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. In addition, in the description of the present invention, unless otherwise stated, the meaning of "a plurality" is two or more.

[0078] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for installing a basic sealing plate of a drum-shaped filter screen, characterized in that, Including the use of an auxiliary tooling, the auxiliary tooling includes a first plate body (1) and a second plate body (2), the first plate body (1) and the second plate body (2) are perpendicularly arranged, and the first plate body (1) and the second plate body (2) form an L-shaped plate; A first long hole (101) is formed on the first plate body (1), a second long hole (201) and a third long hole (202) are successively formed on the second plate body (2), and the length directions of the first long hole (101), the second long hole (201) and the third long hole (202) are the same; The first long hole (101), the second long hole (201) and the third long hole (202) are all in the shape of long strip holes, and the first long hole (101), the second long hole (201) and the third long hole (202) are all arranged along the length direction of the first plate body (1); And the following steps: S1: Rough the chamber wall surface at the installation position of the basic sealing plate of the drum-shaped filter screen; S2: Hoist all the basic sealing plates to the bottom of the drum net chamber, place one or more basic sealing plates on the side frame of the drum-shaped filter screen at the bottom of the drum net chamber, then use screws and nuts to fix the first long hole (101) on the auxiliary tooling to the basic sealing plate, then use screws and nuts to fix the second long hole (201) on the auxiliary tooling to the side frame of the drum-shaped filter screen, and rotate the drum-shaped filter screen according to the number of installed basic sealing plates; S3: Repeat step S2 until all the basic sealing plates are fixed to the side frame of the drum-shaped filter screen; S4: Rotate the drum-shaped filter screen to the set position, then remove the screws and nuts in all the second long holes (201) of the auxiliary tooling, adjust the relative position between the basic sealing plate and the side frame of the drum-shaped filter screen to the set distance, and then use screws and nuts to fix the third long hole (202) on the auxiliary tooling to the side frame of the drum-shaped filter screen; S5: Adjust the positions between adjacent basic sealing plates, and then tighten the nuts on the screws in the third long hole (202); S6: Stabilize the drum-shaped filter screen, drill holes and implant anchor bolts on the chamber wall surface, connect each anchor bolt with the basic sealing plate one by one, then remove the auxiliary tooling, and finally formwork and grout the gap between the basic sealing plate and the chamber wall surface for fixation.

2. The installation method of a drum-shaped filter screen base sealing plate according to claim 1, characterized in that, Each of the basic sealing plates is provided with a screw hole adapted to the screw, and the position of the first long hole (101) on the auxiliary tooling is determined according to the distance between the surface of the auxiliary tooling in contact with the side frame of the drum-shaped filter screen and the bolt hole on the basic sealing plate.

3. A method for installing a basic sealing plate of a drum-shaped filter screen according to claim 1, characterized in that, A plurality of locking threaded holes are formed on the surface of the side frame of the drum-shaped filter screen in contact with the basic sealing plate, and the position of the second long hole (201) on the auxiliary tooling is determined according to the distance between the locking threaded hole and the outer side surface of the side frame of the drum-shaped filter screen.

4. A method for installing a basic sealing plate of a drum-shaped filter screen according to claim 1, characterized in that The position of the third long hole (202) on the auxiliary tooling is determined according to the relative installation distance between the basic sealing plate and the side frame of the drum-shaped filter screen.

5. A method for installing a basic sealing plate of a drum-shaped filter screen according to claim 1, characterized in that, In step S4, a plurality of locking threaded holes are formed on the surface of the drum-shaped filter screen side frame in contact with the basic sealing plate. When adjusting the relative positions of the basic sealing plate and the drum-shaped filter screen side frame, the locking threaded holes are aligned with the third elongated holes (202) on the auxiliary tooling.

6. The installation method of a drum-shaped filter screen base sealing plate according to claim 1, characterized in that, In step S4, the set distance between the basic sealing plate and the drum-shaped filter screen side frame is equal to the distance between the second elongated hole (201) and the third elongated hole (202) on the auxiliary tooling.

7. A method for installing a basic sealing plate of a drum-shaped filter screen according to claim 1, characterized in that, In step S5, adjusting the positions of adjacent basic sealing plates includes pushing the basic sealing plates along the outer side surface of the drum-shaped filter screen side frame so that the side end faces of the adjacent basic sealing plates are in close contact.

8. A method for installing a basic sealing plate of a drum-shaped filter screen according to claim 1, characterized in that A plurality of round holes are formed on each basic sealing plate. In step S6, the anchor bolts on the chamber wall pass through the round holes on the basic sealing plates.

Images