CN217413982U - Tool for midspan alignment of pipe connecting flange - Google Patents
Tool for midspan alignment of pipe connecting flange Download PDFInfo
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- CN217413982U CN217413982U CN202221518127.9U CN202221518127U CN217413982U CN 217413982 U CN217413982 U CN 217413982U CN 202221518127 U CN202221518127 U CN 202221518127U CN 217413982 U CN217413982 U CN 217413982U
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- scribing
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Abstract
The application relates to a tool for centering a pipe joint flange span, which comprises a positioning rod (2), a connecting plate (6) and a marking rod (8); the bottom of the positioning rod (2) is provided with a positioning cone (1) which has the shape and size matched with the flange bolt hole; the connecting plate (6) is connected with the top of the positioning rod (2) and the top of the marking rod (8), and the included angles between the connecting plate and the marking rod are adjustable; the bottom of the scribing rod (8) is provided with a scribing needle (9). In this application, the location cone can realize accurate self-centering with the cooperation of flange bolt hole, and the locating lever is compared the connecting plate angularly adjustable with the marking off pole for the frock can adapt to the flange face of equidimension specification not, uses the marking off needle to carry out bolt hole symmetry and rules out, turns into the span distribution of connecting pipe flange end with the span distribution of flange face, accomplishes the marking off at four benchmark vertical lines of connecting pipe face.
Description
Technical Field
The application relates to the field of pressure vessel manufacturing, in particular to a tool for midspan alignment of a pipe connecting flange.
Background
During the manufacturing process of the pressure vessel, the pipe flange is generally assembled or profiled in a manner that spans the bolt holes. In the process of profiling and marking, a machined flange face is used as a reference, and reference lines required by profiling or assembling are made by uniformly distributing the machined flange face on the connecting pipe through bolt holes. In the conventional scribing process, four perpendicular reference lines are generally obtained by making perpendicular bisectors from bolt holes by crossing with a tape measure, which has the following disadvantages:
1. in the process of using the measuring tapes to cross and make perpendicular bisectors, the bolt holes have no positioning reference, and the scribing precision is low.
2. The operation process is limited by the size and specification of the flange surface of the connecting pipe.
Disclosure of Invention
The technical problem that this application will be solved provides a frock for flange of connecting tube is across well alignment, and its easy operation just can improve the marking off precision.
In order to solve the problems, the application provides a tool for centering a pipe joint flange span, which comprises a positioning rod, a connecting plate and a scribing rod; the bottom of the positioning rod is provided with a positioning cone with the shape and size matched with the flange bolt hole; the connecting plate is connected with the top of the positioning rod and the top of the scribing rod, and included angles between the connecting plate and the top of the scribing rod are adjustable; the bottom of the scribing rod is provided with a scribing needle.
Preferably, the positioning rod is detachably connected with the positioning cone.
Preferably, the top of the positioning rod is provided with a rotating joint which is coaxially arranged, the rotating joint can rotate relative to the positioning rod, and the top of the rotating joint is connected with the connecting plate.
Preferably, the positioning cone comprises a cone body and a limiting part arranged on the peripheral side of the cone body, and the outer diameter of the limiting part is larger than the aperture of the flange bolt hole.
Preferably, a through hole and a central shaft which are matched with each other are arranged at the joint of the connecting plate and the positioning rod, and angle adjustment is realized through relative rotation of the through hole and the central shaft.
Preferably, a sliding rod and an arc-shaped open slot which are matched with each other are arranged at the joint of the connecting plate and the scribing rod, and the angle adjustment is realized through the relative sliding of the sliding rod and the arc-shaped open slot.
Compared with the prior art, the method has the following advantages:
in this application, the location cone can realize accurate self-centering with the cooperation of flange bolt hole, and the locating lever compares the connecting plate angularly adjustable with the marking off pole for the frock can adapt to the flange face of equidimension specification not, uses the marking off needle to carry out the bolt hole symmetry and rules out, turns into the midspan distribution of takeover flange end with the midspan distribution of flange face, accomplishes the marking off at four benchmark vertical lines of takeover face.
Drawings
The following describes embodiments of the present application in further detail with reference to the accompanying drawings.
Fig. 1 is a front view of a tooling for centering a flange span of a pipe joint according to an embodiment of the present disclosure.
Fig. 2 is a three-dimensional view of the tooling for centering a flange of a pipe joint in an application scene according to the embodiment of the present application.
Fig. 3 is a cross-sectional view of a tool for centering a flange joint according to an embodiment of the present application in an application scenario.
In the figure: the device comprises a positioning cone, a positioning rod, a bearing, a fastening bolt I, a rotating joint, a connecting plate, a fastening bolt II, a scribing rod, a scribing needle and a fastening bolt III, wherein the positioning cone is 1, the positioning rod is 2, the bearing is 3, the fastening bolt I is 4, the rotating joint is 5, the connecting plate is 6, the fastening bolt II is 7, the scribing rod is 8, the scribing needle is 9, and the fastening bolt III is 10.
Detailed Description
Referring to fig. 1 to 3, the present application provides a tool for centering a flange of a pipe joint, which mainly includes a positioning rod 2, a connecting plate 6 and a scribing rod 8; the bottom of the positioning rod 2 is provided with a positioning cone 1; the connecting plate 6 is connected with the top of the positioning rod 2 and the top of the scribing rod 8, and the bottom of the scribing rod 8 is provided with a scribing needle 9; the marking rod 8 is longer than the positioning rod 2, and the bottom of the marking rod 8 needs to reach the outer wall of the connecting pipe.
The positioning cone 1 is matched with the flange bolt hole in shape and size and is used for being placed in the flange bolt hole to be matched with the flange bolt hole to achieve accurate self-centering. The positioning cone 1 can only be formed by the cone body, but also can be formed by the cone body and the limiting part, the limiting part is arranged on the peripheral side of the cone body, the outer diameter of the limiting part is larger than the aperture of the flange bolt hole, during use, the limiting part is clamped on the upper surface of the flange bolt hole, the left and right movement of the outer surface of the positioning cone 1 relative to the inner surface of the flange bolt hole is avoided, and the overall stability of the positioning cone 1 is enhanced.
Further, for can dismantling between location cone 1 and the locating lever 2 and be connected, for example both realize the screw thread through the interior external screw thread of mutually supporting and can dismantle the connection. Set up the change that makes things convenient for damaged location cone 1 on the one hand like this, on the other hand is convenient for change the location cone 1 of not equidimension specification to the flange bolt hole of the not equidimension specification of adaptation.
The included angles between the connecting plate 6 and the positioning rod 2 and between the connecting plate 6 and the scribing rod 8 are adjustable, and the included angles can be fixed after the angle adjustment is proper. Specifically, the method comprises the following steps:
the connecting part of the connecting plate 6 and the positioning rod 2 is provided with a through hole and a central shaft which are matched with each other, and the angle adjustment is realized through the relative rotation of the through hole and the central shaft. For example, the one end that connecting plate 6 connects locating lever 2 is equipped with the notch, and the notch both sides are equipped with horizontal through-hole II, and 2 tops of locating lever are equipped with the boss, are equipped with horizontal through-hole I on the boss, and the boss is arranged in the notch and is passed horizontal through-hole I and horizontal through-hole II through fastening bolt I and realize connecting. When the angle is adjusted, the fastening bolt I is unscrewed, and after the angle is adjusted properly, the fastening bolt I is screwed down to realize fixation.
The connecting part of the connecting plate 6 and the scribing rod 8 is provided with a sliding rod and an arc-shaped open slot which are matched with each other, and the angle adjustment is realized through the relative sliding of the sliding rod and the arc-shaped open slot. For example, one end of the connecting plate 6, which is connected with the scribing rod 8, is provided with a sector, the sector is provided with an arc-shaped slot, and the arc-shaped slot and the sector are concentrically arranged; a notch is arranged at the top of the scribing rod 8, and transverse through holes III are arranged at two sides of the notch; the fan-shaped blocks are arranged in the notches and connected through the arc-shaped slots and the transverse through holes III through fastening bolts II. When the angle is adjusted, the fastening bolt II is unscrewed, and after the angle is adjusted properly, the fastening bolt II is screwed down to realize fixation.
The marking off end of scribing needle 9 is towards the outer surface of flange adapter, and the scribing needle 9 and the scribing rod 8 are detachably connected, so that the scribing needle is convenient to replace. For example, the scribing needle 9 is arranged on one side of the sleeve, the fastening bolt III10 is arranged on the other side of the sleeve, and the scribing needle 9 is mounted/dismounted by screwing/unscrewing the fastening bolt III 10.
Aiming at the tool for centering the pipe connecting flange span disclosed in the above content, the working principle of the tool is explained in combination with practical application.
(1) Put into first flange bolt hole with location cone 1, make locating lever 2 keep vertical state, according to the flange face and the specification size of takeover, the contained angle between adjustment connecting plate 6 and locating lever 2 were protected, between marking off pole 8 and the connecting plate 6 makes marking off pole 8 be vertical state and marking off needle 9's marking off head can contact smoothly with the takeover outer wall, fixes the contained angle state between connecting plate 6 and locating lever 2 were protected, between marking off pole 8 and the connecting plate 6 this moment. Then, the positioning rod 2 is manually held to be in a vertical state, an arc line L1 is drawn on the outer wall of the connecting pipe through the scribing needle 9, and the positioning cone 1 rotates relative to the flange bolt hole in the drawing process.
(2) Keeping the included angle state among the positioning rod 2, the connecting plate 6 and the scribing rod 8 in the step 1, putting the positioning cone 1 into a second flange bolt hole adjacent to the first flange bolt hole, repeating the step 1, finishing scribing to obtain an arc line L2, wherein an intersection point P is formed between the arc line L1 and the arc line L2.
(3) And (3) the positioning cone 1 is placed back to the first flange bolt hole, and the angles of all the parts are adjusted, so that the scribing needle 9 can mark an arc line L3 above or below the arc line L1 on the outer wall of the connecting pipe.
(4) Keeping the included angle state among the positioning rod 2, the connecting plate 6 and the scribing rod 8 in the step 3, putting the positioning cone 1 into a second flange bolt hole, finishing scribing to obtain a section of arc line L4, wherein an intersection point Q is formed between the arc line L3 and the arc line L4.
(5) And connecting the intersection point P in the step 2 with the intersection point Q in the step 4 to obtain a first reference vertical line.
(6) And repeating the steps to sequentially finish the other three reference vertical lines on other positions on the outer wall of the flange connecting pipe.
In the scheme, when the scribing needle 9 is used for scribing the outer wall of the connecting pipe, the positioning cone 1 on the circle center positioning side is matched with the flange bolt hole in a rotating mode. Further, can be at 2 coaxial settings a rotary joint 5 in the top of locating lever, the bearing closely cooperates with being connected through the bearing in the bottom of rotary joint 5 and 2 tops of locating lever, and rotary joint 5 can be rotatory relative to locating lever 2. The top of the rotary joint 5 serves as the top of the positioning rod 2 and is connected with the connecting plate 6, and the specific connection structure and the manner can be referred to in the above. Under the condition, when the scribing needle 9 is used for scribing on the outer wall of the connecting pipe, the positioning cone 1 is kept to be fixed relative to the flange bolt hole, the rotary joint 5 is matched with the positioning rod 2 in a rotating mode for scribing, and compared with the situation that the positioning cone 1 rotates relative to the flange bolt hole for matching, the stability of the circle center positioning side is improved.
The technical solutions provided by the present application are described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the structure and the core concept of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
Claims (6)
1. A tool for centering a pipe connecting flange span is characterized by comprising a positioning rod (2), a connecting plate (6) and a marking rod (8); the bottom of the positioning rod (2) is provided with a positioning cone (1) which is matched with the flange bolt hole in shape and size; the connecting plate (6) is connected with the top of the positioning rod (2) and the top of the scribing rod (8), and included angles between the connecting plate and the scribing rod are adjustable; the bottom of the scribing rod (8) is provided with a scribing needle (9).
2. The tooling according to claim 1, characterized in that the positioning rod (2) is detachably connected with the positioning cone (1).
3. The tooling of claim 1, wherein the top of the positioning rod (2) is provided with a rotating joint (5) which is coaxially arranged, the rotating joint (5) can rotate relative to the positioning rod (2), and the top of the rotating joint (5) is connected with the connecting plate (6).
4. The tool according to claim 1, wherein the positioning cone (1) comprises a cone body and a limiting component arranged on the peripheral side of the cone body, and the outer diameter of the limiting component is larger than the hole diameter of the flange bolt hole.
5. The tooling of claim 1, wherein a through hole and a central shaft which are matched with each other are arranged at the joint of the connecting plate (6) and the positioning rod (2), and angle adjustment is realized through relative rotation of the through hole and the central shaft.
6. The tool according to claim 1, characterized in that a sliding rod and an arc-shaped groove which are matched with each other are arranged at the joint of the connecting plate (6) and the scribing rod (8), and the angle adjustment is realized through the relative sliding of the sliding rod and the arc-shaped groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221518127.9U CN217413982U (en) | 2022-06-17 | 2022-06-17 | Tool for midspan alignment of pipe connecting flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221518127.9U CN217413982U (en) | 2022-06-17 | 2022-06-17 | Tool for midspan alignment of pipe connecting flange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217413982U true CN217413982U (en) | 2022-09-13 |
Family
ID=83172988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221518127.9U Active CN217413982U (en) | 2022-06-17 | 2022-06-17 | Tool for midspan alignment of pipe connecting flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217413982U (en) |
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2022
- 2022-06-17 CN CN202221518127.9U patent/CN217413982U/en active Active
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