Electric smelting saddle-shaped bypass

Abstract

The utility model discloses an electric smelting saddle-shaped bypass which aims at overcoming the defects that an existing electric smelting saddle-shaped bypass is complex in structure and large in number of component parts. The bypass structure comprises a bypass main body, an electric heating welding structure, a drilling tool and a cap, wherein the positioning and fixing structure comprises a lower support fixing belt connected to one end of the arc attaching sheet body, an upper fixing wing connected to the other end of the arc attaching sheet body and a lower fixing wing on the lower support fixing belt, and the upper fixing wing and the lower fixing wing are fixed through a fastener to tension the lower support fixing belt so that the bypass main body can be pressed on the main pipeline. The positioning and fixing structure can reduce the number of parts and reduce the cost of the device.

Description

Technical Field

[0001] The utility model relates to the field of pipeline construction, and more specifically, to an electric melting saddle-shaped bypass. Background Art

[0002] The electro-fused saddle bypass is a commonly used accessory in PE pressure pipes. It is often used to add new branches to mature PE natural gas, water supply, industrial fluid and other fluid transportation pipelines that have been put into operation.

[0003] Due to the complex structure and special functions of the product, the traditional saddle-type bypass is usually composed of multiple parts, the product cost is high, the price is expensive, and the operation is not very convenient, which affects its large-scale application in engineering.

[0004] The present application aims to provide an electric fusion saddle-type bypass to address the shortcomings of the existing electric fusion saddle-type bypass, such as complex structure and a large number of components, so as to simplify the product components and reduce the manufacturing cost. Summary of the invention

[0005] The utility model overcomes the shortcomings of the existing electric melting saddle-shaped bypass, such as complex structure and a large number of components, and provides an electric melting saddle-shaped bypass, which simplifies the components of the product and reduces the manufacturing cost.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] An electric fusion saddle bypass, used for connecting a main pipeline, comprises:

[0008] The bypass body includes a feed pipe, a branch end pipe connected to the side wall of the feed pipe, an arc fitting sheet connected to one end of the feed pipe and fitting to the surface of the main pipe, and a positioning and fixing structure arranged on the arc fitting sheet;

[0009] The electric heat welding structure includes an electric heating sheet integrally formed with the arc fitting sheet body and an exposed conductive member electrically connected to the electric heating wire;

[0010] A drilling tool that moves along the feed tube seal and rotates to dig a hole; and

[0011] Blocked shots;

[0012] Among them, the positioning and fixing structure includes a lower supporting fixing belt connected to one end of the arc fitting sheet, an upper fixing wing connected to the other end of the arc fitting sheet and a lower fixing wing on the lower supporting fixing belt. The upper fixing wing and the lower fixing wing are fixed by fasteners to tighten the lower supporting fixing belt so that the bypass body is pressed into the main pipeline.

[0013] The electrofusion saddle bypass is used to connect to the existing pipeline and open a bypass branch under the premise of continuous transportation of the existing pipeline. In this process, the electrofusion saddle bypass needs to remain sealed with the main pipeline to limit the leakage of gas and liquid in the main pipeline.

[0014] The feed pipe of the bypass body is connected to the branch end pipe, so that after the drilling tool in the feed pipe creates a hole on the surface of the main pipe, the main pipe can be connected to the branch end pipe through the dug hole to form a branch.

[0015] In order to achieve sealing, the main pipeline is laminated with an arc-shaped laminating sheet, positioned with a positioning and fixing structure, and then fixed with an electric heat welding structure to maintain the sealing and continuity of the sealing.

[0016] The positioning and sealing structure of the existing electric fusion saddle-type bypass is relatively complex, and the present application makes improvements based on this.

[0017] The improvement includes connecting the upper fixed wing and the lower fixed wing and the fasteners in the form of a screw-slider pair, so that the upper fixed wing and the lower fixed wing are close to each other, thereby tightening the lower support fixing belt, thereby pressing the bypass body on the main pipe to achieve positioning. Then, the electric heating sheet is used to conduct electricity to melt the arc fitting sheet so that the bypass body and the main pipe are integrated to achieve sealing.

[0018] Through the above structure, a large number of parts used for positioning can be reduced, thereby reducing the cost of the electric fusion saddle bypass and making the device easy to promote.

[0019] Preferably, along the direction from away from the arc fitting sheet to close to the arc fitting sheet, the feed tube includes a sealing section and a threaded section, the drilling tool includes a tool handle sealing section, a tool handle threaded section and a drilling tool head, the sealing section and the tool handle sealing section are sealed and connected, the tool handle threaded section and the threaded section are threadedly connected, and the drilling tool advances or retracts by rotating. The sealing connection between the sealing section and the tool handle sealing section constitutes a piston, which limits the escape of gas from the gap between the sealing section and the tool handle sealing section. The connection method of the tool handle threaded section and the threaded section allows the rotation to drive the drilling tool to feed and rotate at the same time, thereby drilling the main pipeline.

[0020] Preferably, the branch end pipe is arranged at the position of the bypass body corresponding to the sealing section. The structure allows the gas or liquid after the hole is dug to leave the branch end pipe without passing through the sealing section, thus avoiding impacting the sealing section or destroying the sealing effect of the sealing section.

[0021] Preferably, when the drilling tool is retracted, the drilling head is higher than the branch end pipe to avoid turbulence near the drilling head, which may affect the flow resistance or cause the hole cover of the main pipeline hole dug by the drilling head to fall out.

[0022] Preferably, sealing rings are installed at both ends of the knife handle sealing section. Said structure further improves the sealing effect.

[0023] Preferably, the drilling head comprises a plurality of blades distributed along the circumferential direction, and the inner side of the blades is provided with positioning threads for positioning the cutting block. The structure is used to dig out a hole cover corresponding to the distribution of the blades, and use the positioning threads to position the hole cover to prevent the hole cover from falling into the pipeline.

[0024] Preferably, the portion of the blade extending out of the drilling tool is in an equilateral triangle structure, which can effectively reduce resistance and drilling torque during drilling.

[0025] Preferably, the electric heating sheet is arranged on the inner wall of the arc-fitting sheet body, and the exposed conductive part includes a conductive insert and a conductive terminal embedded in the arc-fitting sheet body, and the conductive terminal and the conductive insert are threadedly connected. The structure is used to form a closed loop that is easy to connect, and the bypass body and the main pipeline are thermally melted by generating heat with electricity.

[0026] Compared with the prior art, the beneficial effects of the utility model are:

[0027] (1) The positioning and fixing structure can reduce the number of parts and components and reduce the cost of the device;

[0028] (2) The drilling tool only needs to rotate in a circular direction to achieve feeding and cutting. A design is also provided to collect the waste generated by cutting to prevent the waste from falling into the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a cross-sectional schematic diagram of the side of the present invention in a retracted state;

[0030] Figure 2 is a cross-sectional schematic diagram of the front feeding state of the present invention;

[0031] Figure 3 It is a schematic diagram of the front view of the present invention;

[0032] In the figure:

[0033] Main pipeline 1, bypass body 2, lower support fixing belt 211, upper fixing wing 212, lower fixing wing 213, fastener 214, feed pipe 22, threaded section 221, sealing section 222, branch end pipe 23, arc fitting sheet 24, electric heating sheet 31, conductive insert 32, conductive terminal 33, drilling tool 4, tool handle sealing section 41, sealing ring 411, tool handle threaded section 42, drilling head 43, blade 431, cap 5. DETAILED DESCRIPTION

[0034] The present disclosure is further described below in conjunction with the accompanying drawings and embodiments.

[0035] Example:

[0036] An electric fusion saddle bypass, Figure 1 As shown, it is used to connect the main pipeline 1, including:

[0037] The bypass body 2 includes a feed pipe 22, a branch end pipe 23 connected to the side wall of the feed pipe 22, an arc fitting sheet 24 connected to one end of the feed pipe 22 and fitting to the surface of the main pipe 1, and a positioning and fixing structure arranged on the arc fitting sheet 24;

[0038] The electric heat welding structure includes an electric heating sheet 31 integrally formed with the arc fitting sheet 24 and an exposed conductive member electrically connected to the heating wire;

[0039] A drilling tool 4 moves along the feed tube 22 in a sealed manner and digs holes by rotating; and

[0040] Blocked 5 shots;

[0041] Ginseng Figure 2 As shown, the positioning and fixing structure includes a lower supporting fixing belt 211 connected to one end of the arc fitting sheet 24, an upper fixing wing 212 connected to the other end of the arc fitting sheet 24, and a lower fixing wing 213 on the lower supporting fixing belt 211. The upper fixing wing 212 and the lower fixing wing 213 are fixed by fasteners 214 to tighten the lower supporting fixing belt 211 so that the bypass body 2 is pressed onto the main pipeline 1.

[0042] The inner diameter of the arc fitting sheet 24 fits the outer diameter of the main pipe 1. The arc fitting sheet 24 extends to both sides along the length direction of the main pipe 1 with the axis of the feed pipe 22 as the center, and extends to both sides along the circumferential direction of the main pipe 1. In some embodiments, the angle between the two ends extending in the circumferential direction and the axis of the main pipe 1 is greater than 90 degrees and less than 180 degrees.

[0043] The axial direction of the cutter feed tube 22 is located in the radial direction of the main pipeline 1. Along the direction away from the arc fitting sheet 24 to the direction close to the arc fitting sheet 24, the cutter feed tube 22 includes a sealing section 222 and a threaded section 221. Among them, the inner diameter at the sealing section 222 is smaller than the inner diameter at the threaded section 221. The sealing section 222 and the threaded section 221 are transitioned by a step.

[0044] The branch end pipe 23 is arranged at the position of the bypass body 2 corresponding to the sealing section 222. The structure allows the gas or liquid after the hole is dug to leave the branch end pipe 23 without passing through the sealing section 222, thereby avoiding impacting the sealing section 222 or destroying the sealing effect of the sealing section 222. The axis of the branch end pipe 23 is perpendicular to the axis of the feed pipe 22 and is in the same plane.

[0045] Ginseng Figure 3As shown, the electric heating plate 31 is arranged on the inner wall of the arc fitting sheet 24, and the exposed conductive parts include a conductive insert 32 and a conductive terminal 33 embedded in the arc fitting sheet 24, and the conductive terminal 33 is threadedly connected to the conductive insert 32; the structure is used to form a closed loop that is easy to connect, and use electricity to generate heat to heat the bypass body 2 and the main pipeline 1. The electric heating plate 31 has a spirally arranged heating wire, and the surface of the heating wire has an enameled wire to prevent short circuit. The two ends of the heating wire are electrically connected to the conductive insert 32 respectively. The arc fitting sheet 24 extends to both sides along the length direction of the main pipeline 1 with the axis of the feed tube 22 as the center, and there are observation windows on both sides of the feed tube 22 for observing the welding situation. There are also terminal sheaths on both sides of the feed tube 22 for positioning the conductive terminal 33.

[0046] The upper fixing wing 212 and the lower fixing wing 213 are provided with connection holes respectively, and the aperture of the connection hole on the upper fixing wing 212 is larger than the aperture of the connection hole of the lower fixing wing 213. The fastener 214 is a self-tapping bolt, and the outer diameter of the fastener 214 is smaller than the aperture of the connection hole of the upper fixing wing 212, and larger than the aperture of the connection hole of the lower fixing wing 213. By rotating, the upper fixing wing 212 and the lower fixing wing 213 are pulled closer, thereby tightening the lower support fixing belt 211, providing sufficient melting pressure of the bypass body 2 on the main pipeline 1.

[0047] The lower support fixing belt 211 is a flat and wide flexible member with flexibility in a specific direction. In some embodiments, the lower support fixing belt 211 includes a plurality of belt bodies in parallel or staggered configurations.

[0048] The length of the lower support fixing belt 211 is slightly shorter than the outer circumference of the main pipe 1 exposed outside the arc fitting sheet 24, and the tension generates pressure to force the arc fitting sheet 24 to fit and position the main pipe 1. Therefore, displacement will not occur during the subsequent hot melting process, resulting in connection and sealing failure.

[0049] In some embodiments, the main material of the bypass body 2 is HDPE.

[0050] The end of the feed tube 22 away from the arc fitting sheet 24 is open and has a thread on its side wall, and the thread is used to connect the cap 5. The cap 5 protects the feed tube 22 and the drilling tool 4 preset therein. The top of the feed tube 22 is opened to be able to interfere with the drilling tool 4 from the top so that it can be fed.

[0051] The drilling tool 4 includes a handle sealing section 41, a handle thread section 42 and a drilling tool head 43. The diameter of the handle thread section 42 is larger than the handle sealing section 41. This structure prevents the drilling tool 4 from completely leaving the feed tube 22, resulting in seal failure and the fluid in the main pipeline 1 escaping through the feed tube 22. Due to the above arrangement, the drilling tool 4 is installed by screwing in from one end of the feed tube 22 close to the arc fitting sheet 24.

[0052] The sealing section 222 is sealedly connected to the knife handle sealing section 41, and sealing rings 411 are respectively installed at both ends of the knife handle sealing section 41. The structure further improves the sealing effect. Both ends of the knife handle sealing section 41 have annular grooves, and the sealing rings 411 are installed in the annular grooves. The sealing connection between the sealing section 222 and the knife handle sealing section 41 constitutes a piston, which limits the escape of gas from the gap between the sealing section 222 and the knife handle sealing section 41.

[0053] It is worth noting that during the entire travel of the drilling tool 4 , at least a portion of the tool handle sealing section 41 is in contact with the sealing section 222 .

[0054] When the drilling tool 4 is finished withdrawing, the drilling head 43 is higher than the branch end pipe 23. It is avoided that turbulence is formed near the drilling head 43, which affects the flow resistance or causes the hole cover of the main pipeline 1 hole dug on the drilling head 43 to fall out.

[0055] The handle threaded section 42 and the threaded section 221 are threadedly connected, and the drilling tool 4 advances or retreats by rotating. The connection between the handle threaded section 42 and the threaded section 221 allows the rotation to drive the drilling tool 4 to feed and rotate at the same time, thereby drilling the main pipeline 1. Because one end of the feed tube 22 where the cap 5 is installed is open, a cross or flat slot can be set at the end of the drilling tool 4 away from the drilling head 43 to control the rotation of the drilling tool 4 using a screwdriver.

[0056] The drilling tool head 43 includes a plurality of blades 431 distributed in the circumferential direction. The material of the drilling tool 4 is POM, and the material of the blade 431 is metal. The blade 431 and the drilling tool 4 are combined into one by injection molding, and the blade 431 is installed on the guide rod of the drilling tool 4 in the form of an insert. In order to position the blade 431, the end of the guide rod has a plurality of openings distributed at equal intervals in the circumferential direction, and the blade 431 is installed in the openings. During the injection molding process, plastic of the same material as the guide rod enters these openings to realize the positioning of the blade 431 and the tool. The above method can achieve the effect of reliable connection between the blade 431 and the tool.

[0057] The diameter of the drilling tool head 43 is smaller than that of the shank threaded section 42 , which can prevent the drilling tool 4 from being separated from the sealing section 222 , resulting in sealing failure and leakage of the fluid in the main pipeline 1 .

[0058] The portion of the blade 431 extending out of the drilling tool 4 is in an equilateral triangle structure, which can effectively reduce resistance and drilling torque during drilling. The thickness of the root is 0.5-0.8 mm.

[0059] The inner side of the blade 431 is provided with a positioning thread for positioning the cut material block. The structure is used to dig out a hole cover corresponding to the distribution of the blade 431, and use the positioning thread to position the hole cover to prevent the hole cover from falling into the pipeline.

[0060] The electro-fused saddle bypass is used to access the existing pipeline, and a bypass branch is opened under the premise that the existing pipeline continues to transport. In this process, the electro-fused saddle bypass needs to be sealed with the main pipeline 1 to limit the leakage of gas and liquid in the main pipeline 1.

[0061] The feed pipe 22 of the bypass body 2 is connected to the branch end pipe 23, so that after the drilling tool 4 in the feed pipe 22 creates a hole on the surface of the main pipeline 1, the main pipeline 1 can be connected to the branch end pipe 23 through the dug hole to form a branch.

[0062] In order to achieve sealing, the main pipe 1 is laminated with the arc-shaped laminating sheet 24, positioned with the positioning and fixing structure, and then fixed with the electric heat welding structure, so as to maintain the sealing and the continuity of the sealing.

[0063] The positioning and sealing structure of the existing electric fusion saddle-type bypass is relatively complex, and the present application makes improvements based on this.

[0064] The improvement includes connecting the upper fixed wing 212 and the lower fixed wing 213 and the fastener 214 in the form of a screw-slider pair, so that the upper fixed wing 212 and the lower fixed wing 213 are close to each other, thereby tightening the lower support fixing belt 211, thereby pressing the bypass body 2 on the main pipe 1 to achieve positioning. Then, the electric heating sheet 31 is used to conduct electricity to melt the arc fitting sheet 24 so that the bypass body 2 and the main pipe 1 are integrated to achieve sealing.

[0065] Through the above structure, a large number of parts used for positioning can be reduced, thereby reducing the cost of the electric fusion saddle bypass and making the device easy to promote.

[0066] The process of using this device is as follows:

[0067] (1) The arc-shaped bonding sheet 24 is mounted on the main pipe 1;

[0068] (2) Use the lower support fixing belt 211 to wrap around the main pipe 1, and use the fastener 214 to connect the upper fixing wing 212 and the lower fixing wing 213 so that the lower support fixing belt 211 is in a tensioned state;

[0069] (3) Then, the electric heater 31 is energized to fuse the bypass body 2 and the main pipe 1 together;

[0070] (4) removing the cap 5 and driving the drilling tool 4 to feed into the main pipe 1 to achieve drilling;

[0071] (5) rotating the drilling tool 4 in the reverse direction to withdraw the drilling tool 4 to the limit of its travel;

[0072] (6) Install the cap 5.

[0073] The above-described embodiments are only preferred solutions of the present invention and are not intended to limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. An electric fusion saddle bypass for connecting a main pipeline, characterized in that: include: The bypass body includes a feed pipe, a branch end pipe connected to the side wall of the feed pipe, an arc fitting sheet connected to one end of the feed pipe and fitting to the surface of the main pipe, and a positioning and fixing structure arranged on the arc fitting sheet; The electric heat welding structure includes an electric heating sheet integrally formed with the arc fitting sheet body and an exposed conductive member electrically connected to the electric heating wire; The drilling tool moves along the feed tube seal and digs the hole by rotating; and Blocked shots; Among them, the positioning and fixing structure includes a lower supporting fixing belt connected to one end of the arc fitting sheet, an upper fixing wing connected to the other end of the arc fitting sheet and a lower fixing wing on the lower supporting fixing belt. The upper fixing wing and the lower fixing wing are fixed by fasteners to tighten the lower supporting fixing belt so that the bypass body is pressed into the main pipeline.

2. The electric fusion saddle bypass according to claim 1 is characterized in that: Along the direction from away from the arc fitting sheet to close to the arc fitting sheet, the feed tube includes a sealing section and a threaded section, the drilling tool includes a tool holder sealing section, a tool holder threaded section and a drilling cutter head, the sealing section and the tool holder sealing section are sealed and connected, the tool holder threaded section and the threaded section are threadedly connected, and the drilling tool advances or retracts by rotating.

3. The electric fusion saddle bypass according to claim 2 is characterized in that: The branch end pipe is arranged at a position of the bypass body corresponding to the sealing section.

4. The electric fusion saddle bypass according to claim 3 is characterized in that: When the drilling tool has finished retracting, the drilling head is higher than the branch end tube.

5. The electric fusion saddle bypass according to claim 2 is characterized in that: Sealing rings are respectively installed at both ends of the knife handle sealing section.

6. The electric fusion saddle bypass according to claim 2 is characterized in that: The drilling cutter head comprises a plurality of cutting edges distributed in the circumferential direction, and the inner sides of the cutting edges are provided with positioning threads for positioning the cutting block.

7. The electric fusion saddle bypass according to claim 6 is characterized in that: The portion of the cutting edge extending out of the drilling tool is in an equilateral triangle structure.

8. An electric fusion saddle bypass according to any one of claims 1 to 7, characterized in that: The electric heating sheet is arranged on the inner wall of the arc fitting sheet body, and the exposed conductive part comprises a conductive insert and a conductive terminal embedded in the arc fitting sheet body, and the conductive terminal and the conductive insert are threadedly connected.

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