Pipe welding sealing device

Abstract

The embodiment of the present application relates to the technical field of oil and gas pipelines, and particularly relates to a pipeline welding sealing device.The pipeline welding sealing device is provided with a blocking piece, a liquid supply piece and a refrigeration assembly, wherein the blocking piece is used to be placed in a pipeline to be welded, the blocking piece and the inner wall of the pipeline enclose a liquid injection space, the liquid supply piece is arranged in the blocking piece to inject liquid into the liquid injection space through the liquid supply piece, and the refrigeration assembly is connected to the pipeline to reduce the temperature in the pipeline through the refrigeration assembly, so that the liquid in the liquid injection space is solidified, thereby sealing the inside of the pipeline through the solidified liquid, ensuring that the combustible gas and liquid in the pipeline do not affect the welding operation, avoiding the situation that a safety hazard or even an explosion occurs when welding is performed. After the welding operation is completed, the refrigeration assembly stops working, the solidified liquid in the pipeline melts into a liquid state, no additional flushing operation is needed, and no blockage phenomenon occurs, welding efficiency is improved, and cleaning cost is reduced.

Description

Technical Field

[0001] This application relates to the technical field of oil and gas pipelines, and more particularly to a pipeline welding sealing device. Background Technology

[0002] During the use of oil and gas pipelines for gathering and transportation, it is often necessary to open the gathering and transportation pipelines for upgrades, renovations, repairs, and maintenance. However, most pipelines contain flammable gases, flammable liquids, and other materials inside. Even after nitrogen purging, some residues remain, and flammable gas detectors show that the levels are still too high, making hot work and welding impossible. While the traditional method of sealing with grease walls ensures construction safety and allows for hot work, the grease walls inside the pipeline are difficult to wash off after welding, increasing cleaning costs and adversely affecting equipment and instruments in the process. Therefore, sealing pipelines during welding has become a major technical challenge.

[0003] Therefore, it is necessary to propose a pipeline welding sealing device to at least partially solve the problems existing in the prior art. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] Therefore, the present invention provides a pipeline welding sealing device.

[0006] In view of this, a pipeline welding sealing device is proposed according to an embodiment of this application, comprising:

[0007] A blocking element is used to be placed inside the pipeline to be welded, and the blocking element is used to enclose a liquid injection space with the inner wall of the pipeline;

[0008] A liquid supply component, inserted through the blocking component, is used to deliver liquid into the injection space;

[0009] A refrigeration component, connected to the pipeline, for solidifying the liquid within the injection space.

[0010] In one feasible embodiment, the pipeline welding sealing device further includes:

[0011] A traction component is connected to the end of the blocking component that is away from the refrigeration assembly.

[0012] In one feasible embodiment, the pipeline welding sealing device further includes:

[0013] A processor, connected to the liquid supply unit, is configured to execute a computer program to perform:

[0014] When the solidification thickness of the liquid in the injection space is less than or equal to the preset thickness, the liquid supply component delivers liquid to the injection space at a rate of less than 500 ml / min;

[0015] When the solidified thickness of the liquid in the injection space is greater than the preset thickness, the liquid supply component delivers the liquid to the injection space at a rate of 500 ml / min to 800 ml / min.

[0016] In one feasible implementation, the preset thickness is greater than or equal to 100 mm.

[0017] In one feasible implementation, the cooling assembly includes:

[0018] Refrigeration unit;

[0019] A refrigeration strap, connected to the refrigeration unit, is used to be fitted onto the outer wall of the pipeline.

[0020] In one feasible implementation, the refrigerator includes:

[0021] case;

[0022] The compressor is housed within the casing;

[0023] The condenser is connected to the compressor;

[0024] Evaporator, connected to the compressor;

[0025] A capillary tube is disposed between the condenser and the evaporator.

[0026] In one feasible implementation, the refrigeration temperature of the refrigerator is -20°C to -40°C.

[0027] In one feasible embodiment, the pipeline welding sealing device further includes:

[0028] A temperature sensor is connected to the side of the barrier closest to the cooling component.

[0029] In one feasible embodiment, the pipeline welding sealing device further includes:

[0030] A heating element is used to connect to the outer wall of the pipeline.

[0031] In one feasible implementation, the outlet of the liquid supply component is oriented toward the inner wall of the pipeline.

[0032] Compared to existing technologies, the present invention offers at least the following advantages: The pipeline welding sealing device provided in this application includes a blocking component, a liquid supply component, and a cooling component. The blocking component is placed inside the pipeline to be welded, and the blocking component and the inner wall of the pipeline enclose a liquid injection space. The liquid supply component passes through the blocking component to inject liquid into the liquid injection space. The cooling component is connected to the pipeline and lowers the temperature inside the pipeline, causing the liquid in the liquid injection space to solidify. This solidified liquid then seals the inside of the pipeline, ensuring that flammable gases and liquids inside the pipeline do not affect the welding operation and preventing safety hazards or even explosions during hot work. Furthermore, after the welding operation is completed, the cooling component stops working, and the solidified liquid inside the pipeline melts back into a liquid state, eliminating the need for additional flushing operations and preventing blockages, thus improving welding efficiency and reducing cleaning costs. Attached Figure Description

[0033] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings.

[0034] In the attached diagram:

[0035] Figure 1 This is a schematic structural diagram of a pipeline welding sealing device according to an embodiment of this application.

[0036] in, Figure 1 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0037] 110 Blocking component, 120 Liquid supply component, 130 Refrigeration assembly, 131 Refrigeration strap, 132 Refrigeration unit, 200 Piping. Detailed Implementation

[0038] To better understand the above technical solutions, the technical solutions of the embodiments of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of this application and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0039] During the use of oil and gas pipelines for gathering and transportation, it is often necessary to open the gathering and transportation pipeline 200 during upgrades, renovations, repairs, and maintenance. However, most pipelines 200 contain flammable gases, flammable liquids, and other materials. Even after nitrogen purging, some residues remain, and flammable gas detectors show that the levels are still too high, making hot work and welding impossible. While the traditional method of sealing with grease walls ensures construction safety and allows hot work, the grease walls inside the pipeline 200 are difficult to wash off after welding, increasing cleaning costs and adversely affecting equipment and instruments in the process. Therefore, sealing the pipeline 200 during welding has become a major technical challenge.

[0040] To solve the above technical problems, such as Figure 1 As shown, according to an embodiment of this application, a welding and sealing device for a pipeline 200 is proposed, comprising: a blocking member 110, for being placed inside the pipeline 200 to be welded, the blocking member 110 being used to enclose a liquid injection space with the inner wall of the pipeline 200; a liquid supply member 120, passing through the blocking member 110, for supplying liquid to the liquid injection space; and a cooling assembly 130, for being connected to the pipeline 200, for causing the liquid in the liquid injection space to solidify.

[0041] It is understood that the pipeline 200 welding sealing device provided in this application embodiment includes a blocking component 110, a liquid supply component 120, and a cooling component 130. The blocking component 110 is placed inside the pipeline 200 to be welded, and the blocking component 110 and the inner wall of the pipeline 200 enclose a liquid injection space. The liquid supply component 120 passes through the blocking component 110 to inject liquid into the liquid injection space. The cooling component 130 is connected to the pipeline 200 and lowers the temperature inside the pipeline 200, causing the liquid in the liquid injection space to solidify. This solidified liquid then seals the inside of the pipeline 200, ensuring that flammable gases and liquids inside the pipeline 200 do not affect the welding operation and preventing safety hazards or even explosions during hot work. Furthermore, after the welding operation is completed, the cooling component 130 stops working, and the solidified liquid inside the pipeline 200 melts back into a liquid state, eliminating the need for additional flushing operations and preventing blockages, thus improving welding efficiency and reducing cleaning costs.

[0042] Understandably, the refrigeration component 130 is placed close to the section of the pipeline 200 to be welded in order to ensure the sealing of the weld and prevent any residual flammable gas or liquid in the pipeline 200 from affecting the weld.

[0043] Understandably, the liquid supplied by the liquid supply unit 120 can be water, which is easy to solidify and has a low cost.

[0044] In some examples, such as Figure 1As shown, the pipeline 200 welding sealing device further includes a traction member connected to the end of the blocking member 110 away from the refrigeration component 130.

[0045] It is understandable that the pipeline 200 welding sealing device is also equipped with a traction component, which is located on the side of the blocking component 110 away from the cooling component. By operating the traction component, the position of the blocking component 110 inside the pipeline 200 can be adjusted, thereby adjusting the liquid injection space. With this setup, the blocking component 110 can be placed inside the pipeline 200 away from the area to be welded using a traction component. The blocking component 110 and the inner wall of the pipeline 200 at this location form a first liquid injection space. Liquid is supplied to the first liquid injection space via the liquid supply component 120, and the liquid solidifies using the cooling component 130. After the liquid has completely solidified and sealed the inside of the pipeline 200, the blocking component 110 is moved closer to the area to be welded using the traction component. At this location, the blocking component 110 and the inner wall of the pipeline 200 form a second liquid injection space. Liquid is again supplied to the second liquid injection space via the liquid supply component 120, and the liquid solidifies again using the cooling component 130. This increases the thickness of the solidified liquid, and the solidified liquid is closer to the area to be welded, thereby improving the sealing effect on any residual flammable gas or liquid in the pipeline 200. This prevents safety hazards or even explosions during hot work welding, ensuring the safety of the welding operation.

[0046] For example, the towing member may be a handle, which is attached to the end of the blocking member 110 away from the cooling component 130. The operator can hold the handle to move the blocking member 110, or attach a towing rope to the handle and move the blocking member 110 by pulling the towing rope.

[0047] In some examples, the aforementioned pipeline 200 welding sealing device further includes a processor connected to the aforementioned liquid supply component 120, the processor being used to execute a computer program to achieve: when the solidification thickness of the liquid in the aforementioned injection space is less than or equal to a preset thickness, the liquid supply component 120 delivers liquid to the aforementioned injection space at a rate of less than 500 ml / min; when the solidification thickness of the liquid in the aforementioned injection space is greater than the preset thickness, the liquid supply component 120 delivers liquid to the aforementioned injection space at a rate of 500 ml / min to 800 ml / min.

[0048] Understandably, the pipeline 200 welding sealing device is also equipped with a processor, which is connected to the liquid supply component 120. The processor is used to adjust the speed at which liquid is delivered to the injection space according to the thickness of the solidified liquid within the injection space. Specifically, when the thickness of the solidified liquid in the injection space is less than or equal to a preset thickness, liquid needs to be delivered to the injection space slowly to ensure the solidification effect and avoid excessive liquid flow rate, which could cause excessive impact on the solidified liquid and wash away the solidified liquid. When the thickness of the solidified liquid in the injection space is greater than the preset thickness, the liquid supply component 120 delivers liquid to the injection space at a speed of 500 ml / min to 800 ml / min. When the thickness of the solidified liquid in the injection space is greater than the preset thickness, the solidified thickness can withstand the impact of a faster liquid flow rate, thus accelerating the liquid flow rate, improving injection efficiency, and thereby increasing the liquid solidification speed.

[0049] In some examples, the preset thickness is greater than or equal to 100 mm.

[0050] It is understandable that the preset thickness is greater than or equal to 100mm. When the solidification thickness reaches the preset thickness, it can withstand the impact of a relatively fast-flowing liquid, thus accelerating the liquid flow rate, improving injection efficiency, and thereby increasing the liquid solidification speed. When the solidification thickness is less than the preset thickness, liquid needs to be slowly delivered into the injection space to ensure the liquid solidification effect and avoid the situation where the liquid flow rate is too fast, causing excessive impact on the already solidified liquid and washing away the solidified liquid.

[0051] In some examples, such as Figure 1 As shown, the refrigeration assembly 130 includes: a refrigeration unit 132; and a refrigeration strap 131, connected to the refrigeration unit 132, for fitting onto the outer wall of the pipeline 200.

[0052] It is understood that the refrigeration component 130 is equipped with a refrigeration unit 132 and a refrigeration strap 131. The refrigeration strap 131 is fitted onto the outer wall of the pipeline 200 and located at the liquid injection space of the pipeline 200. The refrigeration strap 131 is connected to the refrigeration unit 132. The refrigeration unit 132 cools down the refrigeration strap 131, thereby cooling down the liquid in the liquid injection space, causing the liquid to solidify, and thus sealing the inside of the pipeline 200.

[0053] Understandably, by fitting the cooling strap 131 onto the outer wall of the pipeline 200, the outer and inner walls of the pipeline 200 can be cooled quickly, causing the liquid near the inner wall of the pipeline 200 to solidify first. The solidified liquid is then fixed to the inner wall of the pipeline 200, facilitating the subsequent growth of solidified material and thus quickly sealing the inside of the pipeline.

[0054] Understandably, during the welding process, the refrigeration unit 132 needs to work continuously so that the refrigeration strap 131 can continuously cool the pipeline 200, so that the liquid can remain in a solidified state, improve stability, and ensure construction safety.

[0055] In some examples, the refrigeration unit 132 includes: a housing; a compressor disposed within the housing; a condenser connected to the compressor; an evaporator connected to the compressor; and a capillary tube disposed between the condenser and the evaporator.

[0056] Understandably, the refrigeration unit 132 is equipped with a casing, a compressor, a condenser, an evaporator, and a capillary tube. The compressor is located inside the casing, the condenser is connected to the compressor, the evaporator is connected to the compressor, and a capillary tube is installed between the evaporator and the condenser. With this configuration, the low-pressure vapor of the refrigerant in the refrigeration unit 132 is drawn into the compressor, compressed into high-pressure vapor, and discharged to the condenser. The condenser sends the liquefied refrigerant to the evaporator through the capillary tube for evaporation and heat absorption, thereby achieving the refrigeration effect.

[0057] In some examples, the refrigeration temperature of the above-mentioned refrigerator 132 is -20°C to -40°C.

[0058] Understandably, the refrigeration temperature range of the chiller 132 is -20℃ to -40℃. This ensures the solidification rate of the liquid inside the pipeline 200, thereby increasing the sealing speed inside the pipeline 200 and improving the overall work efficiency of the welding operation.

[0059] In some examples, the aforementioned pipeline 200 welding sealing device further includes a temperature detector connected to the side of the aforementioned barrier 110 near the aforementioned cooling assembly 130.

[0060] Understandably, the welding sealing device of pipeline 200 is also equipped with a temperature detector. Specifically, the temperature detector is connected to the side of the blocking component 110 near the refrigeration component 130. The temperature detector detects the temperature in the liquid injection space to determine the liquid solidification status in the liquid injection space. If an abnormal temperature occurs, it can be detected in time, and the refrigeration component 130 can be repaired, thus ensuring the sealing effect inside pipeline 200.

[0061] In some examples, the welding sealing device for the aforementioned pipeline 200 further includes a heating element for connection to the outer wall of the aforementioned pipeline 200.

[0062] Understandably, the welding sealing device for pipeline 200 is also equipped with a heating element, which is connected to the outer wall of pipeline 200. After the welding operation of pipeline 200 is completed, the cooling component 130 stops working, and the liquid solidified inside pipeline 200 melts naturally. When the outside temperature is low, the solidified substance melts slowly, and the heating element needs to be activated to heat the outer wall of pipeline 200 to accelerate the melting of the solidified substance, so that the welded pipeline 200 can be put into use quickly and the overall work efficiency of the welding operation can be improved.

[0063] In some examples, the outlet of the aforementioned liquid supply component 120 is directed toward the inner wall of the aforementioned pipeline 200.

[0064] Understandably, the outlet of the liquid supply component 120 faces the inner wall of the pipeline 200, allowing the liquid supplied by the liquid supply component 120 to be delivered to the inner wall of the pipeline 200. After being cooled by the cooling component 130, the inner wall temperature of the pipeline 200 is low. When the liquid comes into contact with the inner wall, it can solidify quickly, thereby increasing the speed of solidification and quickly sealing the inside of the pipeline 200. Furthermore, by moving the sealing component, the liquid injection space is changed, and the liquid supply component 120 is moved to increase the thickness of the solidified solid, thereby ensuring the sealing effect on the flammable gas or flammable liquid remaining in the pipeline 200, avoiding safety hazards or even explosions during hot work welding, and ensuring the safety of welding operations.

[0065] In this invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can mean a fixed connection, a detachable connection, or an integral connection; "link" can mean a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0066] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0067] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0068] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A pipeline welding sealing device, characterized in that, include: A blocking element is used to be placed inside the pipeline to be welded, and the blocking element is used to form an adjustable injection space with the inner wall of the pipeline. A liquid supply component is inserted through the blocking component, and the outlet of the liquid supply component is directed toward the inner wall of the pipeline for supplying liquid into the injection space, wherein the liquid is water. A refrigeration component, for connection to the pipeline, for solidifying the liquid in the injection space; A traction component, connected to the end of the blocking component away from the refrigeration assembly, is used to adjust the position of the blocking component inside the pipeline in order to adjust the liquid injection space; The traction component pulls the blocking component sequentially to form a first injection space and a second injection space; The cooling component includes: Refrigeration unit; A refrigeration strap, connected to the refrigeration unit, is used to be fitted onto the outer wall of the pipeline to cause the liquid in the injection space to solidify. A processor, connected to the liquid supply unit, is configured to execute a computer program to perform: When the solidification thickness of the liquid in the injection space is less than or equal to the preset thickness, the liquid supply component delivers liquid to the injection space at a rate of less than 500 ml / min; When the solidified thickness of the liquid in the injection space is greater than the preset thickness, the liquid supply component delivers the liquid to the injection space at a rate of 500 ml / min to 800 ml / min. A temperature sensor is connected to the side of the barrier closest to the cooling component; A heating element for connection to the outer wall of the pipeline; The preset thickness is greater than or equal to 100mm.

2. The pipeline welding sealing device according to claim 1, characterized in that, The refrigeration unit includes: case; The compressor is housed within the casing; The condenser is connected to the compressor; Evaporator, connected to the compressor; A capillary tube is disposed between the condenser and the evaporator.

3. The pipeline welding sealing device according to claim 1, characterized in that, The refrigeration temperature of the refrigeration unit is -20℃ to -40℃.

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