Internal protection tool for rubber expansion joint

Abstract

The utility model discloses an internal protection tool for a rubber expansion joint, which belongs to the technical field of thermal power plants and comprises the rubber expansion joint, a guide plate and a mounting structure. The guide plate is arranged on the inner side of the rubber expansion joint, one end of the guide plate extends to the outside of the rubber expansion joint, a first flange and a second flange are arranged on the sides, opposite to each other, of the rubber expansion joint and the guide plate respectively, and the guide plate is fixedly connected with the rubber expansion joint through a mounting structure which comprises a positioning structure and a fixing structure. The positioning structure is arranged on the outer surfaces of the rubber expansion joint and the guide plate, and the fixing structure is arranged on the outer surface of the positioning structure. According to the internal protection tool for the rubber expansion joint, the performance of the rubber expansion joint is not influenced completely after the guide plate is additionally arranged, namely, a layer of high-strength protection is added, high-speed flowing scouring of slurry to the rubber expansion joint is directly relieved, scouring corrosion of the slurry is reduced, the service life of the rubber expansion joint is prolonged, the maintenance cost is saved, and the workload of personnel is reduced.

Description

Technical Field

[0001] This utility model relates to the field of thermal power plant technology, and in particular to an internal protective tool for rubber expansion joints. Background Technology

[0002] A thermal power plant is a factory that uses combustible materials as fuel to produce electricity. Its basic production process is as follows: fuel burns to heat water and generate steam, converting the chemical energy of the fuel into heat energy. The steam pressure drives a turbine to rotate, converting the heat energy into mechanical energy. The turbine then drives a generator to rotate, converting the mechanical energy into electrical energy. The prime mover is usually a steam engine or a gas turbine; in some smaller power plants, an internal combustion engine may also be used. They all generate electricity by utilizing the pressure drop during the process of high-temperature, high-pressure steam or gas being converted into low-pressure air or condensate through a turbine. The limestone slurry in the desulfurization absorption tower of a thermal power plant can effectively remove important pollutants such as sulfur dioxide and nitrogen oxides from flue gas, reducing air pollutant emissions and protecting the atmospheric environment.

[0003] The main component of limestone slurry is calcium carbonate, which is highly corrosive. During operation, the high-speed flow of the slurry can easily cause wear, corrosion, and leakage in various pipelines, especially the rubber expansion joint at the outlet of the slurry circulation pump. The large flow rate and strong scouring in the slurry circulation pump pipeline make the rubber expansion joint more susceptible to damage due to oxidation from the external environment and corrosion from the high-temperature liquid inside. Furthermore, maintenance and replacement are difficult and risky during normal system operation. If not handled in time, it can cause slurry leakage or flue gas leakage, affecting the safe and stable operation of the desulfurization system and directly impacting desulfurization efficiency, potentially leading to environmental accidents. Utility Model Content

[0004] To address the aforementioned problems, this utility model provides an internal protective tool for rubber expansion joints, the technical solution of which is as follows:

[0005] An internal protective tool for a rubber expansion joint includes a rubber expansion joint, a guide plate, and an installation structure;

[0006] The guide plate is disposed on the inner side of the rubber expansion joint, and one end of the guide plate extends to the outside of the rubber expansion joint. The rubber expansion joint and the guide plate are respectively provided with a first flange and a second flange on opposite sides. The guide plate is fixedly connected to the rubber expansion joint through an installation structure.

[0007] Preferably, the installation structure includes a positioning structure and a fixing structure, wherein the positioning structure is disposed on the outer surface of the rubber expansion joint and the guide plate, and the fixing structure is disposed on the outer surface of the positioning structure.

[0008] Preferably, the positioning structure includes a first positioning ring, a second positioning ring, and a positioning block. The first positioning ring is disposed on the outer surface of the rubber expansion joint near the second flange, the second positioning ring is disposed on the second flange near the first positioning ring, and the positioning block is disposed around the outer surfaces of the first and second positioning rings.

[0009] Preferably, the first positioning ring and the second positioning ring are the same size and shape, and the number of positioning blocks is two sets, with four positioning blocks in each set, all of which are distributed in a ring at equal intervals.

[0010] Preferably, the fixing structure includes a threaded rod and a nut, the threaded rod is disposed inside the positioning block, both ends of the threaded rod extend to the outside of the positioning block, and the nut is disposed on the outer surface of the threaded rod.

[0011] Preferably, there are four threaded rods, each corresponding to a position of a positioning block, and the positioning block has a fixing hole inside that is adapted to the size of the threaded rod.

[0012] Preferably, the nut is threadedly connected to the threaded rod, and the nut abuts against the left and right sides of the positioning block respectively.

[0013] Preferably, the inner diameter of the rubber expansion joint is adapted to the outer diameter of the guide plate, and mounting holes of the same size and corresponding position as the holes on the second flange are provided around the inside of the second positioning ring.

[0014] Beneficial effects:

[0015] The beneficial effects of adopting the technical solution of this utility model are as follows:

[0016] 1. The internal protective tool for this rubber expansion joint, after the addition of the guide plate, does not affect the performance of the rubber expansion joint at all. It is equivalent to adding a layer of high-strength protection, which directly alleviates the high-speed flow scouring of the slurry on the rubber expansion joint, reduces the scouring and corrosion of the slurry, increases the service life of the rubber expansion joint, saves maintenance costs and reduces the workload of personnel, and ensures the safe and stable operation of the equipment.

[0017] 2. The internal protective tool and installation structure of this rubber expansion joint ensure the stability and firmness of the guide plate installation, minimizing the possibility of loosening or displacement during use. Installation and disassembly are also very convenient, facilitating subsequent maintenance and replacement. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an internal protective tool for a rubber expansion joint according to this utility model;

[0020] Figure 2 This is a front view schematic diagram of the internal protective tool for a rubber expansion joint according to this utility model;

[0021] Figure 3 This is a right-side structural schematic diagram of an internal protective tool for a rubber expansion joint according to this utility model.

[0022] In the diagram, 1 is a rubber expansion joint; 2 is a baffle plate; 3 is a first flange; 4 is a second flange; 5 is a first locating ring; 6 is a second locating ring; 7 is a locating block; 8 is a threaded rod; and 9 is a nut. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0024] like Figure 1 As shown, a protective tool for the interior of a rubber expansion joint includes a rubber expansion joint 1, a guide plate 2, and an installation structure;

[0025] The guide plate 2 is disposed inside the rubber expansion joint 1, and one end of the guide plate 2 extends to the outside of the rubber expansion joint 1. The rubber expansion joint 1 and the guide plate 2 are respectively provided with a first flange 3 and a second flange 4 on opposite sides. The guide plate 2 is fixedly connected to the rubber expansion joint 1 through the installation structure.

[0026] Specifically, the installation structure includes a positioning structure and a fixing structure. The positioning structure is located on the outer surface of the rubber expansion joint 1 and the guide plate 2, and the fixing structure is located on the outer surface of the positioning structure.

[0027] In addition, the inner diameter of the rubber expansion joint 1 is adapted to the outer diameter of the guide plate 2, and the second positioning ring 6 has mounting holes of the same size and corresponding position as the holes on the second flange 4 around its interior.

[0028] In this embodiment, the guide plate 2 is equivalent to adding a layer of high-strength protection, which directly alleviates the high-speed flow scouring of the slurry on the rubber expansion joint, reduces the scouring corrosion of the slurry, and increases the service life of the rubber expansion joint 1.

[0029] like Figure 1-3 As shown, the positioning structure includes a first positioning ring 5, a second positioning ring 6, and a positioning block 7. The first positioning ring 5 is disposed on the outer surface of the rubber expansion joint 1 near the second flange 4, the second positioning ring 6 is disposed on the second flange 4 near the first positioning ring 5, and the positioning block 7 is disposed around the outer surfaces of the first positioning ring 5 and the second positioning ring 6.

[0030] Specifically, the first positioning ring 5 and the second positioning ring 6 are the same size and shape, and there are two sets of positioning blocks 7, with four positioning blocks 7 in each set, and they are all distributed in a ring at equal intervals.

[0031] In this embodiment, the positioning structure is used for positioning the guide plate 2 during installation to avoid deviation.

[0032] like Figure 1-3 As shown, the fixing structure includes a threaded rod 8 and a nut 9. The threaded rod 8 is located inside the positioning block 7, and both ends of the threaded rod 8 extend to the outside of the positioning block 7. The nut 9 is located on the outer surface of the threaded rod 8.

[0033] Specifically, there are four threaded rods 8, each corresponding to the position of the positioning block 7. The positioning block 7 has a fixing hole inside that matches the size of the threaded rod 8. Nuts 9 are threadedly connected to the threaded rod 8, and nut 9 abuts against the left and right sides of the positioning block 7 respectively.

[0034] In this embodiment, the fixing structure is used to fix the guide plate 2 in place, so as to avoid loosening or displacement during use.

[0035] The method of using this utility model is as follows:

[0036] Insert the guide plate 2 into the inner side of the rubber expansion joint 1 in opposite directions and align the positioning blocks 7 with each other on the same horizontal line. Pass the threaded rod 8 through the positioning block 7 and screw in the nut 9 during the process so that it fits against both ends of the positioning block 7 to complete the installation of the guide plate 2.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A protective tool for the inside of a rubber expansion joint, characterized in that, Includes a rubber expansion joint (1), a baffle plate (2), and an installation structure; The guide plate (2) is disposed on the inner side of the rubber expansion joint (1), and one end of the guide plate (2) extends to the outside of the rubber expansion joint (1). The rubber expansion joint (1) and the guide plate (2) are respectively provided with a first flange (3) and a second flange (4) on opposite sides. The guide plate (2) is fixedly connected to the rubber expansion joint (1) through an installation structure.

2. The internal protective tool for a rubber expansion joint according to claim 1, characterized in that, The installation structure includes a positioning structure and a fixing structure. The positioning structure is disposed on the outer surface of the rubber expansion joint (1) and the guide plate (2), and the fixing structure is disposed on the outer surface of the positioning structure.

3. The internal protective tool for a rubber expansion joint according to claim 2, characterized in that, The positioning structure includes a first positioning ring (5), a second positioning ring (6), and a positioning block (7). The first positioning ring (5) is disposed on the outer surface of the rubber expansion joint (1) near the second flange (4). The second positioning ring (6) is disposed on the second flange (4) near the first positioning ring (5). The positioning block (7) is disposed around the outer surfaces of the first positioning ring (5) and the second positioning ring (6).

4. The internal protective tool for a rubber expansion joint according to claim 3, characterized in that, The first positioning ring (5) and the second positioning ring (6) are the same in size and shape. There are two sets of positioning blocks (7), and each set contains four positioning blocks (7) that are distributed in a ring at equal intervals.

5. The internal protective tool for a rubber expansion joint according to claim 3, characterized in that, The fixing structure includes a threaded rod (8) and a nut (9). The threaded rod (8) is located inside the positioning block (7), and both ends of the threaded rod (8) extend to the outside of the positioning block (7). The nut (9) is located on the outer surface of the threaded rod (8).

6. The internal protective tool for a rubber expansion joint according to claim 5, characterized in that, The number of threaded rods (8) is four and they are respectively corresponding to the positions of the positioning blocks (7). The positioning blocks (7) have fixing holes inside that are adapted to the size of the threaded rods (8).

7. The internal protective tool for a rubber expansion joint according to claim 6, characterized in that, The nut (9) is threadedly connected to the threaded rod (8), and the nut (9) abuts against the left and right sides of the positioning block (7) respectively.

8. The internal protective tool for a rubber expansion joint according to claim 2, characterized in that, The inner diameter of the rubber expansion joint (1) is adapted to the outer diameter of the guide plate (2), and the second positioning ring (6) has mounting holes of the same size and corresponding position as the holes on the second flange (4) around its interior.

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