Pipe flange butt joint device

Abstract

This utility model relates to the field of pipeline welding technology and discloses a pipeline flange docking device, including a bidirectional adjusting rod, a top support, and a bottom support. Support rods are installed at both ends of the adjusting member, and the top support is connected to the connecting end of the upper support rod of the adjusting member, and the bottom support is connected to the connecting end of the lower support rod of the adjusting member. When welding the flange to the pipeline, this docking device is placed inside the steel pipe. The adjusting member extends the support rods at both ends, and the top and bottom supports come into close contact with the inside of the steel pipe. The flange is placed on the top support, and the flange is moved to adjust the distance between the flange and the steel pipe, adjusting the flange to the standard weld size. This facilitates adjustment of the weld size between the flange and the steel pipe during welding. The device has a simple structure, can be adjusted according to the size of the steel pipe and flange, adapts to various types of pipelines, has a wider range of applications, and is more convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of pipeline welding technology, and in particular to a pipeline flange docking device. Background Technology

[0002] Hydropower station pipelines are typically constructed from a large number of steel pipes, each with flanges welded to both ends. The pipe sections are connected via these flanges, a convenient, secure, and tight connection widely used in steel pipe construction. However, the steel pipes and flanges are manufactured separately, requiring welding to both ends of the pipe as needed. When the horizontal section of the pipe is long, poor leveling can cause the pipeline to deviate from its intended center.

[0003] In the existing technology, the welding of steel pipes and flanges is usually done manually. In order to ensure the coaxiality and levelness of the steel pipes and flanges after welding, it is necessary to use a fixture during the welding process. The fixtures in the existing technology have complex structures and are applicable to a very limited range of flange diameters. Utility Model Content

[0004] This invention provides a pipe flange docking device and docking method to solve the problems of existing technologies where the clamp structure is complex and the applicable flange diameter range is limited, making it unsuitable for assembling flanges and steel pipes of different diameters.

[0005] The technical problem solved by this invention is achieved by the following technical solution:

[0006] A pipe flange connection device, comprising:

[0007] A bidirectional adjusting rod portion, the bidirectional adjusting rod portion including an adjusting member and support rods disposed at both ends of the adjusting member, and connecting ends are provided on the support rods at both ends of the adjusting member;

[0008] Top support seat, the top support seat being connected to the connecting end of the upper support rod of the adjusting member;

[0009] A bottom support is connected to the connecting end of the lower support rod of the adjusting member;

[0010] Both the top support and the bottom support are equipped with a level.

[0011] In one specific implementation, the top support is an angle steel, the inner side of the angle steel is provided with a first scale, and a horizontal level is provided on the angle steel.

[0012] In one specific implementation, the bottom support is a steel plate, and a longitudinal level is installed on the steel plate.

[0013] In one specific implementation, the adjusting component of the bidirectional adjusting rod is an internally threaded adjusting tube, and the support rod is an upper screw and a lower screw threaded to both ends of the internally threaded adjusting tube.

[0014] In one specific implementation, the thread of the upper screw and the upper connecting thread of the internal thread adjusting tube are positive threads.

[0015] In one specific implementation, the thread of the lower screw and the lower connecting thread of the internal thread adjusting tube are reverse threads.

[0016] In one specific implementation, the internal threaded adjusting tube has an observation port, and first scales are provided on both sides of the observation port. Vertical stripes are provided on the outer side of the internal threaded adjusting tube.

[0017] In one specific implementation, the connecting end includes a locking groove seat and a locking block rotatably engaged within the locking groove seat. The locking blocks are respectively disposed on the upper screw and the lower screw, and the locking groove seat is respectively connected to the top support seat and the bottom support seat.

[0018] In one specific implementation, the adjusting component of the bidirectional adjusting rod is a two-end synchronous electric telescopic cylinder, and the support rod is connected to the telescopic end of the two-end synchronous electric telescopic cylinder.

[0019] The beneficial effects of this utility model are:

[0020] By setting support rods at both ends of the adjusting component, connecting the top support to the upper support rod of the adjusting component, and connecting the bottom support to the lower support rod of the adjusting component, this docking device is placed inside the steel pipe when welding the flange to the pipeline. The support rods at both ends are extended by adjusting the device, and the top and bottom supports are pressed tightly against the inside of the steel pipe. The flange is placed on the top support and moved to adjust the distance between the flange and the steel pipe, adjusting the flange to the standard weld size. This facilitates the adjustment of the weld size between the flange and the steel pipe during welding. The device has a simple structure, can be adjusted according to the size of the steel pipe and flange, adapts to various types of pipelines, has a wider range of applications, and is more convenient to use. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1This is a three-dimensional structural diagram of a pipe flange connection device according to the present invention.

[0023] Figure 2 This is a schematic diagram of the planar structure of a pipe flange connection device according to the present invention.

[0024] Figure 3 This is a structural schematic diagram of a pipe flange connection device according to the present invention in an exploded state.

[0025] Figure 4 for Figure 3 An enlarged schematic diagram of point A.

[0026] Figure 5 This is a cross-sectional structural diagram of a pipe flange connection device according to the present invention.

[0027] Figure 6 for Figure 3 An enlarged schematic diagram of point B.

[0028] Figure 7 This is a front view schematic diagram of the pipe flange docking device of this utility model in use.

[0029] Figure 8 This is a side view schematic diagram of the pipe flange docking device of this utility model in use.

[0030] Figure 9 This is a schematic diagram of the back view of the pipe flange docking device of this utility model in use.

[0031] In the diagram: 100, bidirectional adjusting rod; 110, internal thread adjusting tube; 111, observation port; 112, first graduation; 113, vertical stripe; 120, upper screw; 130, lower screw; 101, locking slot seat; 102, locking block; 200, top support seat; 210, angle steel; 220, second graduation; 300, bottom support; 400, horizontal level; 500, longitudinal level; 600, steel pipe; 700, flange. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0034] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0035] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the equipment or element 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 application.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0037] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] Reference Figure 1-3 As shown, the present invention provides a pipe flange connection device, comprising:

[0040] The bidirectional adjustment rod 100 includes an adjustment member and support rods disposed at both ends of the adjustment member, and connecting ends are provided on the support rods at both ends of the adjustment member.

[0041] The top support 200 is connected to the connecting end of the upper support rod of the adjusting component;

[0042] The bottom support 300 is connected to the connecting end of the lower support rod of the adjusting component;

[0043] A level is installed on both the top support 200 and the bottom support 300.

[0044] By setting support rods at both ends of the adjusting component, connecting the top support 200 to the connecting end of the upper support rod of the adjusting component, and connecting the bottom support 300 to the connecting end of the lower support rod of the adjusting component, this docking device is placed inside the steel pipe when welding the flange to the pipeline. The support rods at both ends are extended by adjusting the device, and the top support 200 and bottom support 300 are in contact with the inside of the steel pipe. The flange is placed on the top support 200, and the flange is moved to adjust the distance between the flange and the steel pipe, adjusting the flange to the standard weld size. This facilitates the adjustment of the weld size between the flange and the steel pipe during welding. At the same time, the structure is simple, can be adjusted according to the size of the steel pipe and the flange, adapts to various types of pipelines, has a wider range of applications, and is more convenient to use.

[0045] As a further preferred embodiment of the above implementation, the top support 200 is an angle steel 210, the inner side of the angle steel 210 is provided with a second scale 220, and a horizontal level 400 is provided on the angle steel 210.

[0046] As a further preferred embodiment of the above implementation, the bottom support 300 is a steel plate, and a longitudinal level 500 is provided on the steel plate.

[0047] Example 1

[0048] Reference Figure 1-8 As shown, the adjusting component of the bidirectional adjusting rod 100 is an internally threaded adjusting tube 110, and the support rod is an upper screw 120 and a lower screw 130 threadedly connected to both ends of the internally threaded adjusting tube 110.

[0049] The threads of the upper screw 120 and the upper connecting thread of the internal thread adjusting tube 110 are positive threads.

[0050] The threads of the lower screw 130 and the lower connecting threads of the internal thread adjusting tube 110 are reverse threads.

[0051] When the internal thread adjusting tube 110 is rotated clockwise, the upper screw 120 and the lower screw 130 extend, resulting in overall extension; when the internal thread adjusting tube 110 is rotated counterclockwise, the upper screw 120 and the lower screw 130 shorten, resulting in overall shortening.

[0052] Furthermore, an observation port 111 is provided on the internal threaded adjusting tube 110, and first scales 112 are provided on both sides of the observation port 111. Vertical stripes 113 are provided on the outer side of the internal threaded adjusting tube 110.

[0053] As a further preferred embodiment of the above, the connecting end includes a locking groove seat 101 and a locking block 102 rotatably locked in the locking groove seat 101. The locking blocks 102 are respectively disposed on the upper screw 120 and the lower screw 130. The locking groove seat 101 is connected to the top support seat 200 and the bottom support seat 300 respectively.

[0054] Depending on the diameter of the steel pipe, adjust the length of the support rods at both ends to a suitable length using the adjusting mechanism, and place the butt joint device inside the steel pipe 600. When the steel pipe is arranged horizontally, after the bubble of the horizontal level 4 is centered, place the flange on the top support 200, move the flange, and adjust the distance between the flange and the steel pipe. Adjust the flange to the standard weld size by checking the second scale 220. Check the horizontal level 4 again to ensure it is centered. When the internal thread adjusting pipe 110 is rotated clockwise, the upper screw 120 extends, the lower screw 130 extends, and the entire assembly extends. After the top support 200 and the bottom support 300 are in contact and tightly pressed against the inside of the steel pipe 600, welding can be performed. When the steel pipes are arranged vertically, after the bubble of the longitudinal level 9 is centered, place the flange on the top support 200, move the flange, and adjust the distance between the flange and the steel pipe. Adjust the flange to the standard weld size by checking the second scale 220. Check the longitudinal level 9 again to ensure the bubble is centered. When the internal thread adjusting pipe 110 is rotated counterclockwise, the upper screw 120 shortens, the lower screw 130 shortens, and the whole thing shortens. After the top support 200 and the bottom support 300 are in contact and tightly pressed against the inside of the steel pipe 600, welding can be performed.

[0055] Example 2

[0056] Reference Figure 9As shown, the adjusting component of the bidirectional adjusting rod 100 is a two-end synchronous electric telescopic cylinder. The support rod is connected to the telescopic end of the two-end synchronous electric telescopic cylinder, and the connecting end on the support rod is a reinforcing block. The telescopic end of the two-end synchronous electric telescopic cylinder drives the support rod to move up or down, thereby extending or shortening the overall length of the device to adapt to various types of pipelines.

[0057] Place the docking device inside the steel pipe 600. After the bubble in the level is centered, place the flange on the top support 200. Move the flange and adjust the distance between the flange and the steel pipe. Adjust the flange to the standard weld size by checking the second scale 220. The telescopic ends of the synchronous electric telescopic cylinders at both ends drive the support rod to move upward. After the top support 200 and the bottom support 300 come into contact with the inside of the steel pipe 600 and are tightly pressed together, welding can be performed.

[0058] When in use, the connection method of the pipe flange connection device includes the following steps:

[0059] S01: Measure the diameter of the steel pipe (600mm) and adjust the support rods at both ends to the appropriate length using the adjusting device;

[0060] S02: Place this docking device inside the steel pipe 600, and extend the support rods at both ends by adjusting the device, so that the top support 200 and the bottom support 300 come into contact with and abut against the inside of the steel pipe 600.

[0061] S03: Adjust this docking device to center the bubble in the level gauge;

[0062] S04: Place the flange 700 on the top support 200 and move the flange 700 to adjust the distance between the flange 700 and the steel pipe 600;

[0063] S05: Adjust flange 700 to the standard weld size (e.g., GB / T 985) by referring to the second scale 220.

[0064] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pipe flange connection device, characterized in that, include: A bidirectional adjusting rod (100) includes an adjusting member and support rods disposed at both ends of the adjusting member, and connecting ends are provided on the support rods at both ends of the adjusting member; Top support (200), the top support (200) is connected to the connecting end of the upper support rod of the adjusting member; Bottom support (300), the bottom support (300) is connected to the connecting end of the lower support rod of the adjusting member; The top support (200) and the bottom support (300) are both equipped with a level.

2. A pipe flange connection device according to claim 1, characterized in that: The top support (200) is an angle steel (210), and a second scale (220) is provided on the inner side of the angle steel (210). A horizontal level (400) is provided on the angle steel (210).

3. A pipe flange connection device according to claim 1, characterized in that: The bottom support (300) is a steel plate, and a longitudinal level (500) is installed on the steel plate.

4. A pipe flange connection device according to claim 1, characterized in that: The adjusting component of the bidirectional adjusting rod (100) is an internally threaded adjusting tube (110), and the supporting rod is an upper screw (120) and a lower screw (130) threadedly connected to both ends of the internally threaded adjusting tube (110).

5. A pipe flange connection device according to claim 4, characterized in that: The threads of the upper screw (120) and the upper connecting thread of the internal thread adjusting tube (110) are positive threads.

6. A pipe flange connection device according to claim 4, characterized in that: The threads of the lower screw (130) and the lower connecting threads of the internal thread adjusting tube (110) are reverse threads.

7. A pipe flange connection device according to claim 4, characterized in that: An observation port (111) is provided on the internal threaded adjusting tube (110), and first scales (112) are provided on both sides of the observation port (111). Vertical stripes (113) are provided on the outer side of the internal threaded adjusting tube (110).

8. A pipe flange connection device according to claim 1, characterized in that: The connecting end includes a locking slot (101) and a locking block (102) that is rotatably locked within the locking slot (101). The locking blocks (102) are respectively mounted on the upper screw (120) and the lower screw (130). The locking slot (101) is connected to the top support (200) and the bottom support (300) respectively.

9. A pipe flange connection device according to claim 1, characterized in that: The adjusting component of the bidirectional adjusting rod (100) is a two-end synchronous electric telescopic cylinder, and the support rod is connected to the telescopic end of the two-end synchronous electric telescopic cylinder.

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