Leaking stoppage tool and maintenance method

Abstract

The leaking stoppage tool comprises a baffle, a sleeve and an adjusting rod, a through hole is further formed in the center of the baffle, one end of the sleeve is connected with the baffle, the through hole is communicated with an inner cavity of the sleeve, a plurality of deformation openings are formed in the end, away from the baffle, of the sleeve in the length direction of the sleeve, and the deformation openings are communicated with the inner cavity of the sleeve. The adjusting rod is movably arranged in the sleeve in a penetrating mode, one end of the adjusting rod is an operation section, the other end of the adjusting rod is an adjusting section, the operation section extends out of the through hole, the adjusting section extends out of the end, away from the baffle, of the sleeve, an operation piece is further arranged on the operation section, and the operation piece is connected with the adjusting rod. The operating part is used for controlling the axial displacement of the adjusting rod in the casing pipe, the diameter of the adjusting section is larger than the outer diameter of the casing pipe, and the plugging tool has the advantages that by means of the plugging tool, plugging of the crude benzene distillation on-line equipment can be achieved without fire, large safety risks are avoided, and the plugging tool can be used for plugging the crude benzene distillation on-line equipment. Meanwhile, the overhauling can be carried out under the condition that crude benzene distillation is not stopped, the implementation time is short, and crude benzene rich oil regeneration is not influenced.

Description

Technical Field

[0001] The invention relates to the field of equipment maintenance, and in particular to a leak plugging tool and a repair method. Background Art

[0002] The coking crude benzene distillation process is mainly responsible for absorbing and distilling benzene in coke oven gas to obtain the chemical product crude benzene. In the crude benzene production process, the regenerator is prone to leakage due to its high temperature and high pressure environment and the corrosiveness of the wash oil. According to the common method, the entire crude benzene distillation system needs to be shut down, and the corresponding pipelines need to be plugged, and then steam cleaned to treat the leaks. The treatment cycle is long, and the crude benzene output will suffer a large loss. At the same time, due to the flammable and explosive characteristics of crude benzene, there is a great safety risk during the maintenance process. For this reason, we need a leak plugging tool to plug the leaks of the regenerator. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a leak plugging tool for solving the technical problems that when the regenerator is prone to leakage in the prior art, the traditional leak plugging technology has a long processing cycle and there are great safety hazards during the maintenance process.

[0004] To achieve the above-mentioned purpose and other related purposes, the present invention provides a plugging tool, comprising:

[0005] A baffle, wherein a through hole is also provided at the center of the baffle;

[0006] A sleeve, one end of which is connected to the baffle, the through hole is connected to the inner cavity of the sleeve, and one end of the sleeve away from the baffle is provided with a plurality of deformable openings along its length direction;

[0007] An adjusting rod, the adjusting rod is movably arranged in the sleeve, one end of the adjusting rod is an operating section, the other end of the adjusting rod is an adjusting section, the operating section extends from the through hole, and the adjusting section extends from the end of the sleeve away from the baffle;

[0008] An operating member is also provided on the operating section, and the operating member is used to control the axial displacement of the adjusting rod in the sleeve. The diameter of the adjusting section is greater than the outer diameter of the sleeve.

[0009] The advantage of adopting the above technical solution is that, through the plugging tool of the present application, the size of the leak point at the top of the regenerator is first determined, and a suitable sleeve is selected according to the size of the leak point. The baffle is located inside the regenerator so that the sleeve is located at the leak point and extends out of the regenerator. The adjusting rod is inserted into the sleeve from the outside of the regenerator so that the operating section extends out from the through hole of the baffle. During the tightening process of the nut, the adjusting section is squeezed and deformed by the adjusting section because its diameter is larger than the outer diameter of the sleeve, thereby fitting with the inner wall of the leak point. After the bolts are tightened, the plugging of the crude benzene distillation online equipment can be achieved without stopping the fire, thus avoiding a large safety risk. At the same time, the maintenance can be carried out without stopping the crude benzene distillation, and the implementation time is short, and there is no impact on the crude benzene oil-rich regeneration.

[0010] Optionally, the adjusting section transitions to the middle portion of the adjusting rod in an arc shape.

[0011] Optionally, the sleeve is a copper tube.

[0012] Optionally, the gap distances between all the deformation openings are the same.

[0013] Optionally, a flat washer is movably mounted on the sleeve.

[0014] Optionally, a spring washer is further provided between the flat washer and the baffle.

[0015] Optionally, the operating member is a nut, the outer wall of the operating section is provided with a thread, and the operating member is threadedly matched with the operating section.

[0016] Optionally, the through hole is a threaded hole, the outer wall of the adjusting rod is provided with threads, and the adjusting rod is threadedly matched with the through hole.

[0017] Optionally, a maintenance method is also disclosed, characterized in that: it includes the above-mentioned plugging tool, and when used:

[0018] First, open the vent valve on the superheated steam pipe of the regenerator to 100% to prevent superheated steam from entering the regenerator, then close the oil-rich regulating valve of the regenerator and the manual gate valves before and after the regulating valve to prevent the regenerator from entering oil, then close the valves at the top of the regenerator and the crude benzene distillation tower to discharge the residual oil in the regenerator, and open the vent valve at the top of the regenerator by observing the temperature, pressure and liquid level in the regenerator. When the pressure in the regenerator drops to the same level as that in the outside, open it to plug the leak;

[0019] Determine the size of the leak at the top of the regenerator, select a suitable casing according to the size of the leak, position the baffle inside the regenerator so that the casing is located at the leak, extend the regenerator, insert the adjusting rod into the casing from the outside of the regenerator, so that the operating section extends from the through hole of the baffle. During the tightening process of the nut, the casing will be squeezed and deformed by the adjusting section because its diameter is larger than the outer diameter of the casing, thereby fitting with the inner wall of the leak. After tightening the bolts, high-temperature resistant cold patch materials can be used around the leak to reinforce the seal.

[0020] As described above, a plugging tool of the present invention has the following beneficial effects: through the plugging tool of the present application, it is possible to plug the leak of crude benzene distillation online equipment without fire, thus avoiding greater safety risks; at the same time, the maintenance can be carried out without stopping the crude benzene distillation, with a short implementation time and without affecting the crude benzene oil-rich regeneration. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Shown is a schematic diagram of the structure of an embodiment of the present invention;

[0022] Part Number Description

[0023] 1 Bezel

[0024] 2 Casing

[0025] 3 Adjustment lever

[0026] 4 Operating parts

[0027] 5 Flat washer

[0028] 6 Spring washer DETAILED DESCRIPTION

[0029] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0030] See also Figure 1It should be noted that the diagrams provided in the present embodiment only illustrate the basic concept of the present invention in a schematic manner. The diagrams only show the components related to the present invention rather than the number, shape and size of the components in the actual implementation. The type, quantity and proportion of each component during implementation can be changed at will, and the component layout type may also be more complicated. The structures, proportions, sizes, etc. shown in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they have no technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of the relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0031] See also Figure 1 As shown, the present invention provides a plugging tool, comprising:

[0032] A baffle 1, wherein a through hole is also provided at the center of the baffle 1;

[0033] A sleeve 2, one end of the sleeve 2 is connected to the baffle 1, the through hole is connected to the inner cavity of the sleeve 2, and one end of the sleeve 2 away from the baffle 1 is provided with a plurality of deformable openings along its length direction;

[0034] an adjusting rod 3, wherein the adjusting rod 3 is movably arranged in the sleeve 2, one end of the adjusting rod 3 is an operating section, and the other end of the adjusting rod 3 is an adjusting section, the operating section extends from the through hole, and the adjusting section extends from the end of the sleeve 2 away from the baffle 1;

[0035] The operating section is also provided with an operating member 4 , and the operating member 4 is used to control the axial displacement of the adjusting rod 3 in the sleeve 2 . The diameter of the adjusting section is greater than the outer diameter of the sleeve 2 .

[0036] Exemplarily, the adjusting section transitions to the middle portion of the adjusting rod 3 in an arc shape.

[0037] It should also be noted that when the adjusting section squeezes the sleeve 2, the sleeve 2 can be pressed by the arc-shaped transition between the adjusting section and the middle part of the adjusting rod 3, so that the sleeve 2 is deformed.

[0038] Exemplarily, the sleeve 2 is a copper tube.

[0039] It should also be noted that the sleeve 2 is made of copper or aluminum, so that when the adjustment section squeezes the sleeve 2, the sleeve 2 can be deformed adaptively. The copper and aluminum tubes have a certain elasticity, and can produce an appropriate amount of deformation when the adjustment section is squeezed, so as to more accurately match the action of the adjustment section and improve the adjustment accuracy. The copper tube can maintain good performance in long-term use due to its high strength, oxidation resistance and corrosion resistance, and is not easy to deform or break. Although the aluminum tube has a relatively low strength, its light weight and good thermal conductivity also help improve the durability of the system.

[0040] Exemplarily, the gap distances between all the deformation openings are the same.

[0041] It should also be noted that the deformation of the sleeve 2 under pressure is ensured to remain stable and consistent.

[0042] Exemplarily, a flat washer 5 is movably mounted on the sleeve 2 .

[0043] It should also be noted that a flat washer 5 is provided to fill the space between the baffle 1 and the inner wall of the regenerator to prevent the baffle 1 from damaging the inner wall of the regenerator during the tightening of the nut.

[0044] Exemplarily, a spring washer 6 is further provided between the flat washer and the baffle 1 .

[0045] It should also be noted that the spring washer 6 is provided to further protect the regenerator. When the nut is loosened, the spring washer 6 can pop off the flat washer 5 to avoid adhesion between the flat washer 5 and the regenerator.

[0046] Exemplarily, the operating member 4 is a nut, the outer wall of the operating section is provided with threads, and the operating member 4 is threadedly matched with the operating section.

[0047] It should also be noted that the nut is fitted with the baffle 1 by means of the threaded fit of the nut on the operating section of the adjusting rod 3. During the tightening process of the nut, the adjusting rod 3 is driven to move axially in the sleeve 2, so that the adjusting section can squeeze the sleeve 2, so that the outer wall of the sleeve 2 contacts the leak point.

[0048] Exemplarily, the outer wall of the adjusting rod 3 is provided with threads, and the adjusting rod 3 and the through hole are threadedly matched, so that the adjusting rod can move axially in the sleeve 2.

[0049] It should also be noted that the threaded connection is adopted because the threaded connection is usually composed of simple parts such as bolts and nuts, without the need for complex assembly structures, making the connection process simple and clear. The threaded connection is achieved by the mutual engagement of the threads, which has high reliability. This connection method is not easy to loosen, can withstand large tensile and shear forces, and ensure the stability of the connection.

[0050] Before plugging the leak, open the vent valve on the superheated steam pipe of the regenerator to 100% to prevent superheated steam from entering the regenerator, then close the oil-rich regulating valve of the regenerator and the manual gate valves before and after the regulating valve to prevent oil from entering the regenerator, then close the valves at the top of the regenerator and the crude benzene distillation tower to discharge the residual oil in the regenerator, and open the vent valve at the top of the regenerator by observing the temperature, pressure and liquid level in the regenerator. When the pressure in the regenerator drops to the same level as the outside, open it to perform the plugging operation.

[0051] At the same time, during the maintenance period, crude benzene distillation can be directly blown through the low steam in the tower, and the distillation process does not need to be stopped.

[0052] Exemplarily, a leak plugging tool of the present application, when in use, first determines the size of the leak point at the top of the regenerator, selects a suitable sleeve 2 according to the size of the leak point, positions the baffle 1 inside the regenerator so that the sleeve 2 is located at the leak point, extends the regenerator, and inserts the adjusting rod 3 into the sleeve 2 from the outside of the regenerator so that the operating section extends from the through hole of the baffle. During the tightening process of the nut, the sleeve 2 will be squeezed and deformed by the adjusting section because its diameter is larger than the outer diameter of the sleeve 2, thereby fitting against the inner wall of the leak point. After tightening the bolts, high-temperature resistant cold patch materials can be used around the leak point for reinforcement and sealing.

[0053] The tool design allows the selection of a suitable casing according to the size of the leak at the top of the regenerator, ensuring the accuracy and effectiveness of plugging. This adaptability enables the tool to cope with leaks of different sizes and shapes, improving the flexibility and application range of plugging. High-temperature resistant cold patch materials are used around the plugging points for reinforced sealing, further enhancing the sealing effect. The selection of cold patch materials also takes into account the stability in high-temperature environments, ensuring the reliability of the plugging tool under harsh conditions. The casing is made of high-quality materials such as copper tubes or aluminum tubes, with good strength and corrosion resistance. The plugging tool has a reasonable structural design and is easy to disassemble and clean.

[0054] In summary, by using a plugging tool of the present invention, the plugging tool of the present application can be used to plug the leak of crude benzene distillation online equipment without fire, thus avoiding greater safety risks. At the same time, the maintenance can be carried out without stopping the crude benzene distillation, with a short implementation time and no impact on the crude benzene oil-rich regeneration.

[0055] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by a person with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A plugging tool, characterized in that: include: A baffle (1), wherein a through hole is provided at the center of the baffle (1); A sleeve (2), one end of the sleeve (2) being connected to the baffle (1), the through hole being connected to the inner cavity of the sleeve (2), and one end of the sleeve (2) away from the baffle (1) being provided with a plurality of deformable openings along its length direction; an adjusting rod (3), the adjusting rod (3) being movably arranged in the sleeve (2), one end of the adjusting rod (3) being an operating section, the other end of the adjusting rod (3) being an adjusting section, the operating section extending from the through hole, and the adjusting section extending from an end of the sleeve (2) away from the baffle (1); An operating member (4) is also provided on the operating section, and the operating member (4) is used to control the axial displacement of the adjusting rod (3) in the sleeve (2). The diameter of the adjusting section is greater than the outer diameter of the sleeve (2).

2. A leak plugging tool according to claim 1, characterized in that: The adjusting section and the middle part of the adjusting rod (3) are transitioned in an arc shape.

3. A leak plugging tool according to claim 2, characterized in that: The sleeve (2) is a copper tube.

4. A leak plugging tool according to claim 3, characterized in that: The gap distances between all the deformation openings are the same.

5. A leak plugging tool according to claim 4, characterized in that: The sleeve (2) is also movably provided with a flat washer (5).

6. A leak plugging tool according to claim 5, characterized in that: A spring washer (6) is also provided between the flat washer and the baffle (1).

7. A leak plugging tool according to claim 6, characterized in that: The operating member (4) is a nut, the outer wall of the operating section is provided with threads, and the operating member (4) is threadedly matched with the operating section.

8. A leak plugging tool according to claim 7, characterized in that: The through hole is a threaded hole, the outer wall of the adjusting rod (3) is provided with threads, and the adjusting rod (3) is threadedly matched with the through hole.

9. A maintenance method, characterized in that: The plugging tool comprising any one of claims 1 to 8, when in use: First, open the vent valve on the superheated steam pipe of the regenerator to 100% to prevent superheated steam from entering the regenerator, then close the oil-rich regulating valve of the regenerator and the manual gate valves before and after the regulating valve to prevent the regenerator from entering oil, then close the valves at the top of the regenerator and the crude benzene distillation tower to discharge the residual oil in the regenerator, and open the vent valve at the top of the regenerator by observing the temperature, pressure and liquid level in the regenerator. When the pressure in the regenerator drops to the same level as that in the outside, open it to plug the leak; Determine the size of the leak point at the top of the regenerator, select a suitable casing (2) according to the size of the leak point, place the baffle (1) inside the regenerator, place the casing (2) at the leak point, extend the regenerator, insert the adjustment rod (3) from the outside of the regenerator into the casing (2), and make the operating section extend from the through hole of the baffle. During the tightening process of the nut, the adjustment section is larger than the diameter of the baffle. The outer diameter of the sleeve (2) is deformed by the extrusion of the adjustment section, thereby fitting with the inner wall of the leak point. After tightening the bolts, high temperature resistant cold patch materials can be used to reinforce the seal around the leak point.

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