A casing-type leak plugging tool with variable pipe diameter and its use method

Abstract

The present invention discloses a sleeve-type plugging tool with a variable pipe diameter and a method for using the same. The tool mainly includes: a plugging sleeve assembly, a tightening assembly and an elastic lining assembly. The inner surface of the plugging sleeve assembly is provided with a detachable elastic lining assembly, and the elastic lining assembly includes at least one layer of elastic lining. The plugging sleeve assembly is connected to the tightening assembly in a clamping manner, and the plugging sleeve assembly fastens the elastic lining assembly around the outer wall of the leaking pipe through the tightening assembly and squeezes it inward synchronously. The sleeve-type plugging tool with a variable pipe diameter and a method for using the same provided by the present invention, by providing a detachable elastic lining assembly on the inner surface of the plugging sleeve assembly, the plugging sleeve assembly becomes a plugging sleeve with an adjustable inner diameter, which can meet the needs of plugging leaking pipes of different sizes after rapid assembly.

Description

Technical Field

[0001] The invention belongs to the technical field of plugging devices, and in particular relates to a sleeve-type plugging tool with a variable pipe diameter and a use method thereof. Background Art

[0002] Pressurized tank trucks are the main mode of road transportation for hazardous chemicals. Due to factors such as rollover, rear-end collision, scratches, medium corrosion, welding defects, and damage to sealing materials, tank trucks are very likely to be damaged, causing leakage, combustion, and explosion accidents of hazardous chemicals, causing uncontrollable losses to people's lives and property. Pipelines are one of the main parts of tank trucks that are damaged. In case of pipeline leakage accidents in pressurized tank trucks, firefighters generally use sleeve-type leak plugging tools for emergency plugging.

[0003] The casing-type plugging tool is mainly composed of a plugging casing (two rigid semicircular shells), a sealing liner, fastening bolts and fastening nuts. The method of use is: first measure the size of the leaking pipe; secondly, select a plugging casing of appropriate size and place it at the leaking location; fix the two rigid semicircular shells with bolts and tighten the nuts until there is no more leakage.

[0004] However, the sleeve plugging tool has the following shortcomings: Considering that the size of the leaking pipe is not fixed, the fire brigade is often equipped with a sleeve plugging tool box composed of plugging sleeves of a series of pipe diameters. Obviously, the tool box has problems such as large size, heavy weight, and inconvenient to carry. Under high-pressure leakage, two people are required to operate, one of whom presses the plugging sleeve on the leaking part of the pipe, and the other operates the fastening bolts and nuts to tighten, which is relatively inconvenient.

[0005] Therefore, there is an urgent need for a pipeline plugging tool that can meet the needs of different pipe diameters to meet the emergency needs of fire brigades to plug the leakage of pressure tank truck pipelines. Summary of the invention

[0006] In order to make up for the above-mentioned deficiencies of the existing pipeline plugging tools when in use, the present invention provides a sleeve-type plugging tool with a variable pipe diameter and a method of using the same, which can be applicable to plugging pipelines of different sizes.

[0007] In order to achieve the above-mentioned purpose, the variable diameter sleeve plugging tool provided by the present invention mainly includes: a plugging sleeve assembly, a tightening assembly and an elastic lining assembly, the inner surface of the plugging sleeve assembly is provided with a detachable elastic lining assembly, and the elastic lining assembly includes at least one layer of elastic lining; the plugging sleeve assembly is connected to the tightening assembly in a clamping manner, and the plugging sleeve assembly fastens the elastic lining assembly around the outer wall of the leaking pipe through the tightening assembly and squeezes it inward synchronously.

[0008] Furthermore, the leak-proof sleeve assembly includes two semicircular rigid shells, one end of the two semicircular rigid shells are connected by a first connecting bolt, and the other end of the two semicircular rigid shells is formed into an adjustable closed loop that can be opened and closed through a tightening assembly.

[0009] Furthermore, the tightening assembly includes a plurality of tightening bolts and a clamping strip; the plurality of tightening bolts pass through the clamping strip and are threadedly connected to the connecting end of the first rigid shell, and the clamping strip can form a detachable clamping structure with the connecting end of the second rigid shell.

[0010] Furthermore, a plurality of limiting protrusions are provided at the connection end of the second rigid shell, and the plurality of limiting protrusions can form a detachable clamping structure with the clamping strip.

[0011] Furthermore, the inner surface of the plugging sleeve is provided with several layers of elastic linings; the diameters of the multiple layers of elastic linings are arranged in descending order along the inner surface of the plugging sleeve; and rigid linings are arranged between adjacent elastic linings.

[0012] Furthermore, each layer of the elastic liner is pasted on the leak-proof pad; the leak-proof pad is pasted on the inner surface of the rigid liner or the leak-proof sleeve.

[0013] With respect to the variable diameter sleeve leak-plugging tool formed by the above-mentioned structure, the present invention also provides a variable diameter sleeve leak-plugging method, wherein the leak-plugging method comprises wrapping a leak-plugging sleeve assembly around the leaking pipe, and arranging an elastic lining assembly with an adjustable inner diameter in the leak-plugging sleeve assembly, wherein the leak-plugging sleeve assembly fastens the elastic lining assembly around the outer wall of the leaking pipe through a tightening assembly and simultaneously squeezes it inward to form a sealing structure.

[0014] Furthermore, the variable diameter casing leak plugging method comprises the following steps:

[0015] (1) Measure the size of the leaking pipe;

[0016] (2) Wrapping a plugging sleeve assembly with an elastic liner assembly of appropriate size around the outer wall of the leaking pipe;

[0017] (3) Install the tightening assembly;

[0018] (4) Pre-tightening of the plugging casing assembly;

[0019] (5) Tightening operation.

[0020] The variable diameter sleeve leak-plugging tool and its use method provided by the present invention provide a detachable elastic lining assembly on the inner surface of the leak-plugging sleeve assembly, so that the leak-plugging sleeve assembly becomes a leak-plugging sleeve with adjustable inner diameter, which can meet the needs of plugging leaking pipes of different sizes after quick assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] Figure 1 This is a schematic diagram of the main structure of the variable diameter casing plugging tool in this example;

[0023] Figure 2 It is a schematic diagram of the right side structure of the variable diameter casing plugging tool in this example.

[0024] Meaning of the symbols in the figure:

[0025] Leaking pipe 100, variable diameter sleeve plugging tool 200, plugging sleeve assembly 210, first semicircular rigid shell 211, second semicircular rigid shell 212, first connecting bolt 213, tightening assembly 220, limiting protrusion 221, tightening bolt 222, second connecting bolt 223, clamping strip 224, limiting block 224a, clamping tooth structure 224b, elastic lining assembly 230, large-size elastic lining 231, small-size elastic lining 232, rigid lining 233. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below with reference to specific diagrams.

[0027] In response to the problems existing in the existing sleeve-type plugging tools, this example provides a sleeve-type plugging tool with a variable pipe diameter. By setting an elastic lining component with an adjustable inner diameter size, it can be used for plugging leaks in pipes of different diameters. At the same time, it has a simple structure, is portable, and is easy to operate, meeting the needs of emergency plugging of pipeline leaks in pressure tank trucks.

[0028] like Figure 1 As shown, the variable diameter casing plugging tool 200 provided in this example mainly includes: a plugging casing assembly 210, a tightening assembly 220 and an elastic liner assembly 230.

[0029] Among them, the inner surface of the plugging sleeve assembly 210 is provided with an elastic lining assembly 230. Under the action of the tightening assembly 220, the plugging sleeve assembly 210 can wrap the elastic lining assembly 230 around the outer wall of the leaking pipe 100 and squeeze it inward simultaneously, thereby plugging the leaking pipe 100.

[0030] Specifically, the leak-proof sleeve assembly 210 is composed of a first semicircular rigid shell 211 and a second semicircular rigid shell 212. Under the action of the tightening assembly 220, the two can wrap the elastic lining assembly 230 and simultaneously squeeze it from all sides to tighten it around the outer wall of the leaking pipe 100, thereby having a leak-proof effect on the leaking pipe 100.

[0031] When the leak-proof sleeve assembly 210 is specifically set up, one end of the first semicircular rigid shell 211 and one end of the second semicircular rigid shell 212 are connected by a first connecting bolt 213. At the same time, the first semicircular rigid shell 211 and the second semicircular rigid shell 212 can rotate around the first connecting bolt 213 to form a closed loop that can be opened and closed.

[0032] In the specific configuration here, a plurality of grooves may be provided on the outer walls of the first semicircular rigid shell 211 and the second semicircular rigid shell 212 to reduce the weight of the leak-proof sleeve assembly and facilitate operation and use.

[0033] On the basis of the above structure, this example further provides a tightening assembly 220 at the other end of the first semicircular rigid shell 211 and the second semicircular rigid shell 212, which can connect the leak-proof sleeve assembly 210 into a closed loop with adjustable tightness, and can tighten the leak-proof sleeve assembly 210. At the same time, during the tightening process, the relative displacement of the leak-proof sleeve assembly 210 can be converted into centripetal pressure, thereby squeezing the leaking pipe 100 from all sides.

[0034] The tightening assembly 220 here includes a second connecting bolt 223 , a plurality of tightening bolts 222 and a clamping strip 224 .

[0035] In the specific setting, a plurality of connecting parts are provided at one end of the first semicircular rigid shell 211, specifically, at one end (i.e., the connecting end) of the first semicircular rigid shell 211 that can be opened and closed, and the second connecting bolt 223 is provided on the connecting part. One end of the tightening bolt 222 is passed through the second connecting bolt 223 and forms a spiral connection therewith.

[0036] A plurality of limiting protrusions 221 are provided at one end of the second semicircular rigid shell 212, specifically at the end (i.e., the connection end) of the second semicircular rigid shell 212 that can be opened and closed. The limiting protrusions 221 are preferably evenly spaced and distributed at the end (i.e., the connection end) of the second semicircular rigid shell 212 that can be opened and closed, and are opposite to the connection portion of the first semicircular rigid shell 211.

[0037] The clamping strip 224 in the tightening assembly 220 can cooperate with a plurality of limiting protrusions 221 on the second semicircular rigid shell 212 to form a detachable clamping structure.

[0038] The tightening bolts 222 in the tightening assembly 220 are sequentially inserted into the clamping strip 224 , and the nut end of each tightening bolt 222 forms a limit with the clamping strip 224 , while the connecting end passes through the clamping strip 224 and is threadedly connected with the second connecting bolt 223 .

[0039] In this way, the tightening bolts 222 are tightened by rotation. During the tightening process, the tightening bolts 222 will move toward the second connecting bolts 223, and then drive the clamping strip 224 to move toward the connecting end of the first semicircular rigid shell 211 where the second connecting bolts 223 are set.

[0040] At this time, the clamping strip 224 is clamped at the plurality of limiting protrusions 221 on the second semicircular rigid shell 212, and the clamping strip 224 forms a clamping structure with the plurality of limiting protrusions 221 on the second semicircular rigid shell 212. In this way, when the clamping strip 224 moves toward the first semicircular rigid shell 211 driven by the tightening bolt 222, the clamping strip 224 synchronously drives the connecting end of the second semicircular rigid shell 212 to move toward the connecting end of the first semicircular rigid shell 211 through the clamping structure, until the connecting end of the second semicircular rigid shell 212 contacts and is pressed against the connecting end of the first semicircular rigid shell 211.

[0041] Specifically, a plurality of limit blocks 224a are provided on the clamping strip 224, which can cooperate with a plurality of limit protrusions 221 on the second semicircular rigid shell 212 to form a limit structure to prevent the clamping strip 224 from moving laterally during the tightening operation, so that the connecting end on the second semicircular rigid shell 212 is used relative to the connecting end on the first semicircular rigid shell 211.

[0042] On this basis, in this example, a concave snap-in groove is provided on the inner side surface of each limiting protrusion 221 on the second semicircular rigid shell 212, and a corresponding snap-in structure 224b with a ramp structure is provided on the clamping strip 224. Through the cooperation of the two, a stable and reliable detachable snap-in structure can be formed between the clamping strip 224 and the limiting protrusion 221 to protect the safety and reliability of the tightening process.

[0043] Based on the above scheme, the plugging sleeve assembly 210 and the tightening bolt 222 are designed in a clamping type, so that the plugging sleeve assembly 210 has a large tightening force under the action of the tightening bolt 222, and even under the injection pressure of the leakage medium, the tightening bolt 222 can be rotated and inserted into the slot 221 of the plugging sleeve assembly 210, thereby achieving pre-tightening, and a single person can complete this operation.

[0044] Furthermore, in this example, an elastic lining assembly 230 is also provided on the inner wall of the leak-plugging sleeve assembly 210. Here, the leak-plugging sleeve assembly 210 wraps the elastic lining assembly 230. Under the action of the tightening bolts 222, the elastic lining assembly 230 is synchronously squeezed from all sides and fastened around the leaking pipe 100, thereby effectively sealing the leaking pipe 100.

[0045] The elastic lining assembly 230 here includes at least one layer of elastic lining, which is used to block the leaking pipeline 100.

[0046] In order to adapt to the plugging of pipelines of different sizes, the elastic lining assembly 230 here may include multiple layers of elastic liners, and the multiple layers of elastic liners are detachably arranged along the inner wall of the plugging sleeve 210 in order from large to small in diameter.

[0047] At the same time, a rigid liner is arranged between adjacent multi-layer elastic liners, the main purpose of which is to stabilize the multi-layer elastic liner.

[0048] The elastic lining component 230 here can be composed of multiple layers of adhesive composite materials when specifically configured, and can be set on the inner wall of the leaking sleeve component 210 by pasting. Such a structural configuration makes it easy to disassemble it during use, thereby achieving a sleeve-type leak plugging tool 200 with a variable pipe diameter.

[0049] This example selects the leak-proof casing assembly 210 with two layers of elastic lining on its inner wall as a specific example for detailed introduction.

[0050] The elastic liner assembly 230 in this example includes: a large-sized elastic liner 231 and a small-sized elastic liner 232, which are mainly used to form a sleeve-type plugging tool 200 with a variable pipe diameter.

[0051] Among them, the large-size elastic liner 231 is set to be C-shaped, and its opening is set to correspond to the opening of the plugging sleeve assembly 210 and the tightening assembly 220, and can form a closed loop under the action of the tightening assembly 220. Such a structural setting facilitates the large-size elastic liner 231 and the plugging sleeve assembly 210 to open and close synchronously, so as to wrap the leaking pipe 100 for plugging.

[0052] Furthermore, a small-sized elastic liner 232 is provided in the innermost layer of the variable diameter sleeve plugging tool 200. The small-sized elastic liner 232 is also arranged in a C-shape, and its opening can be arranged according to actual needs. Here, it is preferably arranged in coordination with the opening of the large-sized elastic liner 231 to facilitate installation on the leaking pipe.

[0053] Furthermore, a rigid liner 233 is provided between the large-sized elastic liner 231 and the small-sized elastic liner 232 , and its main purpose is to stabilize the large-sized elastic liner 231 and the small-sized elastic liner 232 .

[0054] In specific settings, the rigid liner 233 can preferably be set between two layers of elastic liners by gluing, so as to facilitate disassembly together with the elastic liner to form a variable pipe diameter.

[0055] The rigid liner 233 here is specifically composed of two semicircular rings, and the head and tail ends of the two semicircular rings can be in a closed state under the tightening action of the plugging sleeve assembly 210. At this time, the rigid liner 233 is arranged in a circular ring shape.

[0056] When the leak-proof sleeve assembly 210 has no tightening force, the two semicircular ring ends of the rigid lining 233 can be opened to form an opening. The two openings here can be set according to actual needs. Here, they are preferably matched with the openings of the small-sized elastic liner 232 and the large-sized elastic liner 231 to facilitate installation on the leaking pipe.

[0057] Based on the variable diameter sleeve plugging tool 200 of the above structure, in specific applications, if the small-sized elastic liner 232 matches the size of the leaking pipe 100, then the variable diameter sleeve plugging tool 200 is directly wrapped around the leaking pipe 100 to perform the plugging operation.

[0058] If the size of the leaking pipe 100 is large, the small-sized elastic liner 232 and the rigid liner 233 can be torn off by hand. At this time, the inner diameter of the variable-diameter sleeve plugging tool 200 becomes the inner diameter of the large-sized elastic liner 231, which is then wrapped around the leaking pipe 100 to perform plugging operations.

[0059] There is no specific limitation on the number of layers of the elastic lining and the rigid lining, which can be set according to actual needs.

[0060] Furthermore, each layer of the elastic lining can be set on the leak-proof pad by gluing (not shown in the figure), and then the leak-proof pad with the elastic lining is gluingly set on the inner surface of the rigid liner 233 or the leak-proof sleeve assembly 210. Such a structural arrangement enables each layer of the elastic lining to have a better sealing effect when plugging leaks.

[0061] The leak-proof pad here can be made of a material with good flexibility and elasticity, and is preferably set on the inner surface of the rigid liner 233 or the leak-proof sleeve assembly 210 by gluing, so as to facilitate disassembly together with the elastic liner to form a variable pipe diameter.

[0062] In view of the above-mentioned setting scheme of the variable diameter casing plugging tool 200, a method for using the variable diameter casing plugging tool 200 is further provided, which specifically includes the following steps:

[0063] (1) Measuring the size of the leaking pipe 100;

[0064] (2) Wrap the plugging sleeve assembly 210 with the elastic liner assembly 230 of appropriate size around the outer wall of the leaking pipe 100, and calculate the required thickness of the elastic liner according to the pipe size; tear off the excessively thick elastic liner by hand, and wrap the plugging sleeve assembly 210 with the elastic liner assembly 230 around the outer wall of the leaking pipe 100;

[0065] (3) Install the tightening assembly, which connects the leak-proof sleeve assembly 210 to form a closed loop that can be opened and closed and has adjustable tightness; connect the tightening bolt 222 to the first semicircular rigid shell 211 of the leak-proof sleeve assembly 210 through the second connecting bolt 223; connect the slot 221 on the second semicircular rigid shell 212 to the clamping strip 224 in a clamping hoop type, and connect the clamping strip 224 to the tightening bolt 222.

[0066] (4) Pre-tightening of the plugging sleeve assembly 210: Wrap the plugging sleeve assembly 210 around the outer wall of the leaking pipeline 100 with the pipeline leaking part as the center, and rotate the tightening bolt 222 and insert it into the slot 221 to achieve pre-tightening;

[0067] (5) Tightening operation: tighten the tightening bolt 222 until the pipeline stops leaking.

[0068] The variable pipe diameter sleeve type leak-plugging tool and the use method thereof provided by the present invention provide a detachable elastic lining component on the inner surface of the leak-plugging sleeve component, so that the leak-plugging sleeve component becomes a leak-plugging sleeve with an adjustable inner diameter, which can meet the needs of leaking pipes of different sizes after quick assembly, and the leak-plugging sleeve component is formed into an adjustable closed loop that can be opened and closed by tightening the component, and the sleeve component provided with the elastic lining is fastened around the outer wall of the leaking pipe to achieve a plugging effect.

[0069] The variable-diameter sleeve-type leak plugging tool and the use method thereof provided by the present invention have a simple structure, are easy to carry, and are convenient to operate, and can effectively improve the efficiency of emergency plugging of pipelines of pressure tank trucks.

[0070] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A variable diameter casing plugging tool, characterized in that: Mainly include: A plugging sleeve assembly, a tightening assembly and an elastic liner assembly, wherein the inner surface of the plugging sleeve assembly is provided with a detachable elastic liner assembly, the elastic liner assembly includes at least one layer of elastic liner, the large-sized elastic liner in the elastic liner assembly is arranged in a C-shape, and its opening is arranged to correspond to the opening of the plugging sleeve assembly and the tightening assembly, and can form a closed loop under the action of the tightening assembly; the small-sized elastic liner in the elastic liner assembly is also arranged in a C-shape; the plugging sleeve assembly is connected to the tightening assembly in a hoop-like manner, and the plugging sleeve assembly is tightened by the tightening assembly The elastic lining assembly is fastened around the outer wall of the leaking pipe and is squeezed inwardly at the same time, and the large-size elastic lining is opened and closed synchronously with the leak-plugging sleeve assembly to wrap the leaking pipe for leak plugging; a rigid lining is also arranged between adjacent multi-layer elastic liners in the elastic lining assembly, and the rigid lining is specifically composed of two semicircular rings, and the head and tail ends of the two semicircular rings can be in a closed state under the tightening action of the leak-plugging sleeve assembly. At this time, the rigid liner is arranged in a circular ring shape, and when the leak-plugging sleeve assembly has no tightening force, the two semicircular ring ends of the rigid liner can be opened to be open.

2. The variable diameter casing plugging tool according to claim 1 is characterized in that: The leak-proof sleeve assembly comprises two semicircular rigid shells, and the two semicircular rigid shells form a closed loop that can be opened and closed and has adjustable tightness through a tightening assembly.

3. The variable diameter casing plugging tool according to claim 1 or 2, characterized in that: The tightening assembly includes a plurality of tightening bolts and a clamping strip; the plurality of tightening bolts pass through the clamping strip and are threadedly connected to the connecting end of the first rigid shell, and the clamping strip can form a detachable clamping structure with the connecting end of the second rigid shell.

4. The variable diameter casing plugging tool according to claim 3 is characterized in that: The connecting end of the second rigid shell is provided with a plurality of limiting protrusions, and the plurality of limiting protrusions can form a detachable clamping structure with the clamping strip.

5. The variable diameter casing plugging tool according to claim 1, characterized in that: The inner surface of the plugging sleeve is provided with a plurality of layers of elastic linings; the diameters of the plurality of layers of elastic linings are arranged in descending order along the inner surface of the plugging sleeve.

6. The variable diameter casing plugging tool according to claim 5, characterized in that: Each layer of the elastic liner is pasted on the leak-proof pad; the leak-proof pad is pasted on the inner surface of the rigid liner or the leak-proof sleeve.

7. A variable diameter casing plugging method, characterized in that: The plugging method is to wrap a plugging sleeve assembly around the leaking pipe, and set an elastic liner assembly with an adjustable inner diameter in the plugging sleeve assembly. The plugging sleeve assembly fastens the elastic liner assembly around the outer wall of the leaking pipe through a tightening assembly and squeezes it inwards simultaneously to form a sealing structure; the elastic liner assembly includes at least one layer of elastic liner, and the large-size elastic liner in the elastic liner assembly is set in a C shape, the opening of which is correspondingly matched with the opening of the plugging sleeve assembly and the tightening assembly, and can form a closed loop under the action of the tightening assembly; the elastic liner assembly The small-sized elastic liner in the component is also arranged in a C shape, and the large-sized elastic liner and the plugging sleeve assembly are opened and closed synchronously to wrap the leaking pipe to plug the leak; a rigid liner is also arranged between adjacent multi-layer elastic liners in the elastic liner assembly, and the rigid liner is specifically composed of two semicircular rings, and the head and tail ends of the two semicircular rings can be in a closed state under the tightening action of the plugging sleeve assembly. At this time, the rigid liner is arranged in a circular ring shape, and when the plugging sleeve assembly has no tightening force, the two semicircular ring ends of the rigid liner can be opened to be open.

8. The variable diameter casing leak plugging method according to claim 7, characterized in that: The variable-diameter casing leak plugging method comprises the following steps: (1) Measure the size of the leaking pipe; (2) Wrapping a plugging sleeve assembly with an elastic liner assembly of appropriate size around the outer wall of the leaking pipe; (3) Install the tightening assembly; (4) Pre-tightening of the plugging casing assembly; (5) Tightening operation.

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