Metal pipeline plugging device

Abstract

The utility model discloses a metal pipeline plugging device which comprises a flange seat, a plugging assembly is detachably installed on the inner side of the top of the flange seat, and the plugging assembly comprises a plugging plate, a plurality of plate pins adjustably installed on the plugging plate, a sealing rubber ring arranged on the plugging plate and a limiting block detachably installed on the top of the plugging plate. A clamping groove is formed in the inner wall of the flange seat, and when the blocking plate is installed on the flange seat, one end of the plate pin can be clamped in the clamping groove by adjusting the position of the plate pin; and a blind plate is detachably mounted at the top of the flange seat. The device is simple and compact in structure, convenient to install and operate, safe and reliable in structure, low in manufacturing cost and high in practicability, and the position of the clamping groove can be accurately positioned through mechanical limiting.

Description

Technical Field

[0001] The utility model relates to the technical field of metal pipeline non-stop plugging equipment, in particular to a metal pipeline plugging device. Background Art

[0002] In the process of existing pipeline maintenance, rerouting, adding branches, etc., in order not to affect the use of users on the line, the pipeline non-stop construction method is often used. Pipeline non-stop construction requires welding pipe fittings on the pipeline, and then installing clamp valves, hole opening machines, plugging devices and other equipment on the pipe fittings to complete the opening and plugging of the pipeline, and then complete the maintenance, rerouting, adding branches and other work of the pipeline. After these works are completed, the excavated part needs to be backfilled, and after removing the plugging device, it is necessary to install a plug in the pipe fitting to complete the plugging at the pipe opening, and finally cover the blind plate and backfill. The existing technology is fixed from the outside to the inside, that is, multiple screw holes are opened on the outer circumference of the plugging seat, and then the plugging disk in the plugging seat is fixed by screws through the screw holes. On the one hand, this method requires opening screw holes, which is time-consuming and labor-intensive. On the other hand, opening multiple screw holes will cause air leakage, especially when the plugging disk is not placed correctly, the gas inside the fluid pipeline will leak out through the screw holes, which is extremely dangerous when electric welding is performed, and it will also cause energy waste. The invention patent with publication number CN104295851A discloses a plugging device for fluid pipeline fittings, including a plugging disk, a sealing groove for installing a sealing ring is provided on the outer circumferential surface of the lower side of the plugging disk, a turntable groove is provided at the center position of the top of the plugging disk, and a plurality of plug plate grooves are evenly provided on the circumference of the turntable groove, a turntable is provided in the turntable groove, and an internal screw hole joint is provided on the top surface of the turntable, and a plug plate is slidably installed in the plug plate groove, and the turntable and the plug plate are connected by a fork, one end of the fork is hinged to the top surface of the turntable, and the other end is hinged to the top surface of the turntable. The top surface of the plug plate is hinged, and the turntable drives the plug plate to slide in the plug plate groove through the fork. A pressure plate for preventing the plug plate from falling off is also installed on the blocking disk. The two sides of the pressure plate are pressed on the upper edges of the two sides of the plug plate, which realizes the blocking of the pipeline from the inside to the outside, saves the process and manpower of drilling holes on the blocking seat, and avoids the risk of gas leakage from the screw hole. However, the device has a complex structure and high manufacturing cost. In addition, when blocking, it is necessary to ensure that the plug plate drops to the corresponding position of the card slot on the flange seat, which has strict requirements on the blocking distance and is inconvenient to operate. Utility Model Content

[0003] The utility model aims to provide a metal pipe plugging device, which has a simple and compact structure, is easy to install and operate, can accurately locate the slot position, adopts mechanical limit, has a safe and reliable structure, low manufacturing cost, and strong practicality.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A metal pipe plugging device comprises a flange seat, on the inner side of the top of which a plugging assembly is detachably mounted, the plugging assembly comprising a plugging plate, a plurality of plate pins adjustably mounted on the plugging plate, a sealing rubber ring arranged on the plugging plate and a limit block detachably mounted on the top of the plugging plate, a slot is arranged on the inner wall of the flange seat, and when the plugging plate is mounted on the flange seat, the position of the plate pin can be adjusted so that one end of the plate pin can be stuck in the slot; a blind plate is detachably mounted on the top of the flange seat.

[0006] Preferably, the flange seat comprises a connecting pipe and a flange connector fixedly arranged on the top of the connecting pipe, and an intersecting line connecting portion adapted to the pipeline to be connected is arranged at the bottom of the connecting pipe.

[0007] Preferably, a plurality of threaded connection holes are provided on the top of the flange connection piece, and the blind plate is detachably connected to the flange seat by bolts.

[0008] Preferably, a lifting lug is detachably mounted on the blind plate.

[0009] Preferably, the connecting pipe is a straight tube, a three-way pipe or a four-way pipe.

[0010] Preferably, four plate pins are provided.

[0011] Preferably, a plurality of slide grooves are provided on the plate pin, and threaded holes whose positions and numbers match those of the slide grooves are provided on the blocking plate, and fastening screws are detachably mounted on the threaded holes, and the fastening screws pass through the slide grooves.

[0012] Preferably, a bushing is sleeved on the fastening screw, and the bushing is slidably disposed in the sliding groove.

[0013] Preferably, an oblique groove is also provided on the plate pin, and the oblique groove is used to adjust the position of the plate pin.

[0014] Preferably, a first positioning conical surface is provided in the flange connection piece, and a second positioning conical surface matched with the first positioning conical surface is provided on the blocking plate.

[0015] In the utility model, the device can securely and quickly install the blocking plate on the flange seat by controlling the extension and contraction of the plate pin. The first positioning cone surface cooperates with the second positioning cone surface to improve the convenience of installation. The provided card slot can improve the accuracy of the blocking plate installation, which is more conducive to on-site installation and saves time and effort. After installation, the limit block is used for mechanical limiting, and the structure is safer and more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic cross-sectional view of the overall structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the disassembled state of the plugging component of the utility model;

[0019] In the figure: 1. flange seat; 2. blind plate; 3. lifting ear; 4. sealing assembly; 5. slot; 6. slide slot; 7. fastening screw; 8. bushing; 9. inclined slot; 10. connecting pipe; 11. flange connector; 12. intersecting line connection; 40. blocking plate; 41. plate pin; 42. sealing rubber ring; 43. limit block. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings:

[0021] like Figure 1 , Figure 2 and Figure 3 A metal pipe plugging device shown includes a flange seat 1, the flange seat 1 includes a connecting pipe 10 and a flange connector 11 fixedly arranged on the top of the connecting pipe 10 by welding, and an intersecting line connecting portion 12 adapted to the pipe to be connected is arranged at the bottom of the connecting pipe 10, and the intersecting line connecting portion 12 is directly welded to the pipe to be connected during operation. In this embodiment, the connecting pipe 10 is a straight tube, a tee or a cross tube. A blind plate 2 is detachably installed on the top of the flange seat 1. Specifically, a plurality of threaded connection holes are arranged on the top of the flange connector 11 along its circumference, and bolts are used to pass through the blind plate 2 to detachably connect it to the flange seat 1. A lifting lug 3 is detachably installed on the blind plate 2 by thread, and the lifting lug 3 facilitates the overall lifting of the device and the movement of the device. A sealing ring is arranged between the blind plate 2 and the flange seat 1.

[0022] A plugging assembly 4 is detachably mounted on the inner side of the top of the flange seat 1. The plugging assembly 4 includes a plugging plate 40, a plurality of plate pins 41 adjustably mounted on the plugging plate 40, a sealing rubber ring 42 mounted on the plugging plate 40, and a stopper 43 detachably mounted on the top of the plugging plate 40. The plugging plate 40 is generally annular in shape, and an annular groove is arranged on the plugging plate 40. The sealing rubber ring 42 is installed in the annular groove. When the plugging assembly 4 is mounted on the flange seat 1, the sealing rubber ring 42 seals the contact position between the two. In one embodiment, a total of four plate pins 41 are arranged, and the four plate pins 41 are arranged along the circumference of the plugging plate 40. The inner and outer sides of the plate pins 41 both have arc portions. The outer arc portion contacts the card slot 5, and the inner arc portion contacts the stopper 43. A threaded hole is arranged at the top center of the plugging plate 40. The stopper 43 is detachably mounted on the threaded hole using bolts to achieve a detachable connection of the stopper 43.

[0023] A card slot 5 is provided on the inner wall of the flange seat 1. When the blocking plate 40 is installed on the flange seat 1, the operator manually adjusts the position of the plate pin 41 so that the outer end of the plate pin 41 is stuck in the card slot 5, thereby realizing the detachable connection of the blocking component 4. The plate pin 41 is manually adjusted to separate from the card slot 5, thereby realizing the disassembly of the two. In one embodiment, a plurality of slide grooves 6 are provided on the plate pin 41, and threaded holes with matching slide groove positions and numbers are provided on the blocking plate 40. A fastening screw 7 is detachably installed on the threaded hole, and the fastening screw 7 passes through the slide groove 6. In this embodiment, three slide grooves 6 are provided on each plate pin 41, and the slide groove 6 is a waist-shaped hole. In a preferred embodiment, a bushing 8 is sleeved on the fastening screw 7, and the bushing 8 is slidably provided in the slide groove 6. The provision of the bushing 8 facilitates the position adjustment of the plate pin 41.

[0024] The plate pin 41 is also provided with an inclined groove 9, which is used to adjust the position of the plate pin 41. The operator can use a tool to adjust the position of the plate pin 41 through the inclined groove 9. A first positioning cone surface is provided inside the flange connector 11, and a second positioning cone surface matching the first positioning cone surface is provided on the outer wall of the blocking plate 40. During installation, the first positioning cone surface and the second positioning cone surface cooperate to improve the installation efficiency and facilitate centering.

[0025] The above embodiments are only some descriptions of the concept and implementation of the utility model, and are not intended to limit the concept and implementation of the utility model. Under the concept of the utility model, technical solutions that have not been substantially changed are still within the scope of protection.

Claims

1. A metal pipe plugging device, comprising a flange seat, characterized in that: A sealing assembly is detachably mounted on the inner side of the top of the flange seat, and the sealing assembly includes a blocking plate, a plurality of plate pins adjustably mounted on the blocking plate, a sealing rubber ring arranged on the blocking plate, and a limit block detachably mounted on the top of the blocking plate. A card slot is arranged on the inner wall of the flange seat. When the blocking plate is installed on the flange seat, the position of the plate pin can be adjusted so that one end of the plate pin can be stuck in the card slot. A blind plate is detachably mounted on the top of the flange seat.

2. The metal pipe plugging device according to claim 1, characterized in that: The flange seat comprises a connecting pipe and a flange connector fixedly arranged on the top of the connecting pipe, and an intersecting line connecting portion adapted to the pipeline to be connected is arranged at the bottom of the connecting pipe.

3. The metal pipe plugging device according to claim 2, characterized in that: A plurality of threaded connection holes are arranged on the top of the flange connection piece, and the blind plate is detachably connected to the flange seat by bolts.

4. The metal pipe plugging device according to claim 1 or 3, characterized in that: A lifting lug is detachably mounted on the blind plate.

5. The metal pipe plugging device according to claim 2 or 3, characterized in that: The connecting pipe is a straight tube, a three-way pipe or a four-way pipe.

6. The metal pipe plugging device according to claim 1, characterized in that: There are four plate pins.

7. The metal pipe plugging device according to claim 1 or 6, characterized in that: A plurality of slide grooves are arranged on the plate pin, threaded holes whose positions and numbers match those of the slide grooves are arranged on the blocking plate, and fastening screws are detachably mounted on the threaded holes, and the fastening screws pass through the slide grooves.

8. The metal pipe plugging device according to claim 7, characterized in that: A bushing is sleeved on the fastening screw, and the bushing is slidably arranged in the sliding groove.

9. The metal pipe plugging device according to claim 7, characterized in that: The plate pin is also provided with an oblique groove, which is used for adjusting the position of the plate pin.

10. The metal pipe plugging device according to claim 2, characterized in that: A first positioning conical surface is arranged in the flange connection piece, and a second positioning conical surface matched with the first positioning conical surface is arranged on the blocking plate.

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