Mechanical flange opening online maintenance device

Abstract

The utility model discloses a mechanical flange opening on-line maintenance device which comprises a left box body and a right box body, observation windows are arranged on the left box body and the right box body, the left box body and the right box body are spliced with each other, and the splicing end is provided with two semi-circular notches which are oppositely arranged. The sealing piece is in running fit with the semicircular notch; the spherical joints are embedded in the left box body and the right box body; the mechanical arm movably penetrates through the spherical joint and extends into the left box body and the right box body; according to the utility model, the closed space is formed at the position of the pipeline needing to be maintained through the two mutually spliced box bodies, so that in the pipeline for conveying important media, on-line maintenance of part of pipe sections is realized under the condition that the equipment is not stopped under the condition that the operation performance requirements of upstream and downstream equipment are ensured; in addition, the economic cost and the time cost of shutdown replacement can be reduced during small-range maintenance or detection.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline maintenance technical field especially relates to a mechanical flange mouth on -line maintenance device. BACKGROUND

[0002] In the domestic gas transmission pipeline process, flange gasket maintenance, blind plate extraction and plugging and other maintenance operations are often involved in production. The existing gas transmission pipeline flange gasket maintenance and blind plate extraction and plugging process operation all contain nitrogen replacement. In some large device systems, in order to achieve the effect of safe replacement, a long section of pipeline or a large volume of equipment needs to be filled with a large amount of nitrogen to keep the dangerous medium concentration and other parameters of the maintenance point within the safe range, so that the operation at the flange can be carried out.

[0003] In the pipeline conveying important medium, in order to ensure the operation performance requirements of upstream and downstream equipment, generally when the equipment is started, shutdown is basically not allowed, and there is great danger for online maintenance operation. In addition, when small range maintenance or detection is carried out, the economic cost and time cost of shutdown replacement is too high. UTILITY MODEL CONTENTS

[0004] The main purpose of the utility model is to provide a mechanical flange mouth on-line maintenance device, which aims to solve the existing technical problems.

[0005] To achieve the above purpose, the utility model provides a mechanical flange mouth on-line maintenance device, which comprises:

[0006] The left box body and the right box body have observation windows, are spliced with each other, and have two oppositely arranged semicircular notches at the splicing end;

[0007] The sealing element is rotationally connected with the semicircular notches, a hole is formed in the sealing element, and a sleeve wrench is inserted into the hole.

[0008] The spherical joint is embedded in the left box body and the right box body; and

[0009] The mechanical arm is movably connected with the spherical joint and extends into the left box body and the right box body.

[0010] Further, the sealing element is a semicircular structure matched with the semicircular notches.

[0011] Further, a groove matched with the sealing element is formed in the semicircular notch.

[0012] Further, the left box body and the right box body are both rectangular structures welded by five metal plates.

[0013] Further, two gas replacement openings are arranged on the surface of the left box and / or the right box.

[0014] Further, the two gas replacement openings are arranged on different surfaces of the left box and / or the right box.

[0015] Further, a connecting opening is arranged on the surface of the left box and / or the right box, for connecting a pressure gauge to monitor the air pressure in the box.

[0016] Further, the splicing end of the left box and the right box is provided with a convex edge, and a bolt hole is arranged on the convex edge.

[0017] The beneficial effects of the utility model are embodied in that:

[0018] The utility model discloses a box body which is spliced with two box bodies, forms a closed space at the pipeline needing to be maintained, guarantees the running performance requirement of upstream and downstream equipment in the pipeline conveying important medium, makes the equipment realize on-line maintenance of part of pipe sections under the condition of no shutdown, and can reduce the economic cost and time cost of shutdown replacement when small-range maintenance or detection is carried out. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic view of the utility model in use state (remove the right box);

[0020] Figure 2 It is a schematic view of the left box and the right box structure of the utility model;

[0021] Figure 3 It is a schematic view of the sealing element (semicircular shape) structure of the utility model.

[0022] BRIEF DESCRIPTION OF DRAWINGS

[0023] 100, left box;101, observation window;102, semicircular notch;103, gas replacement opening;104, connecting opening;105, convex edge;200, right box;300, sealing element;301, hole;302, sleeve wrench;400, spherical joint;500, mechanical arm. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. The embodiments in the application and the features in the embodiments can be combined with each other without conflict. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0025] Referring to Figure 1 and 2 The utility model provides a kind of mechanical flange mouth online maintenance device, comprising:

[0026] Left box 100 and right box 200, which have observation window 101 on it, observation window 101 can be set corresponding position and quantity according to observation needs (for example: the first observation window 101 is set on the upper surface of left box 100, each operation in the box 101 can be observed from the upper angle through the observation window, the second observation window 101 is set on the front side of left box 100, whether the flange face in the box is aligned or other operation conditions can be observed from the front side angle through the observation window 101, the third observation window 101 is set on the lower surface of right box 200, each operation in the box can be observed from the lower angle through the observation window 101, the fourth observation window 101 is set on the rear side of right box 200, whether the flange face in the box is aligned or other operation conditions can be observed from the rear side angle through the observation window 101), and they are mutually spliced, and the splicing end has two oppositely arranged semicircular notches 102;

[0027] Sealing element 300 is rotationally matched with semicircular notch 102, and hole 301 is formed in sealing element 300, and sleeve wrench 302 is inserted into hole 301.

[0028] Spherical joint 400 (existing joint bearing structure can be used) is embedded on left box 100 and right box 200; and,

[0029] Mechanical arm 500 is movably penetrated into left box 100 and right box 200 through spherical joint 400, and the number of mechanical arm 500 can be set as needed, specifically, the related structure disclosed in public patent number CN211421010U can be used to realize the clamping function.

[0030] When the device is used, first, the device is used to physically isolate the to-be-maintained part from the surrounding environment. ① The sealing element 300 of the device box is used to surround and seal the outer surface of the pipeline to be maintained; ② The device box is then replaced with inert gas, and after the inert gas enters the built-in space of the left and right box combination, the internal environment surrounded by the box is isolated from the atmospheric environment.

[0031] Second, the device is used to remove the valve or blind plate to be replaced. ① The nut is fixed by the mechanical arm 500 in the metal box; ② The appropriate sleeve wrench 302 is inserted into the hole 301 of the upper and lower sealing elements 300 of the box to loosen the bolts on the upper and lower flanges; ③ After all the studs are fixed by the mechanical arm 500, they are pulled down, and the remaining mechanical claws on the mechanical arm 500 move the valve or blind plate to be replaced.

[0032] Again, the new valve or blind plate is installed to the corresponding position by the device. ① The new valve or blind plate is moved to the installation position by the mechanical arm 500 on the front and rear sides of the left box body 100 and the right box body 200; ② the lower mechanical arm 500 lifts all the studs on the lower flange to reset; ③ the sleeve wrench 302 is used to install and tighten the upper and lower nuts, respectively; ④ the sleeve wrench 302 is directly installed to the torque required for nut tightening.

[0033] Finally, the air tightness after replacement is detected.

[0034] After confirming that there is no problem, the left and right box bodies can be disassembled, and the operation of replacing the valve or blind plate online is completed.

[0035] In an embodiment, please refer to Figure 3 The sealing member 300 is a semicircular structure adapted to the semicircular notch 102.

[0036] Specifically, the sealing member 300 is made of elastic rubber material.

[0037] In an embodiment, please refer to Figure 2 A groove cooperating with the sealing member 300 is arranged in the semicircular notch 102. In this embodiment,

[0038] In an embodiment, the left box body 100 and the right box body 200 are both rectangular box structures welded by five metal plates.

[0039] In an embodiment, please refer to Figure 1 It also includes two gas replacement openings 103 arranged on the surface of the left box body 100 and / or the right box body 200, which are used for replacing gas.

[0040] In addition, the opening not only provides nitrogen replacement, but also can be connected to a combustible gas detector for detecting the concentration of combustible gas in the box body after nitrogen replacement.

[0041] In an embodiment, the two gas replacement openings 103 are arranged on different surfaces of the left box body 100 and / or the right box body 200.

[0042] Specifically, the two gas replacement openings 103 can be arranged on the left box body 100 at the same time, can be arranged on the right box body at the same time, or one can be arranged on the left box body 100 and the other can be arranged on the right box body 200, Figure 1 and Figure 2 Only one gas replacement opening 103 is shown on the left box body 100, and the other gas replacement opening 103 is arranged on the bottom surface of the right box body 200 in this application.

[0043] Preferably, the gas replacement is full by using the diagonal arrangement (that is, can be on the same box or different boxes, and the effect is better when arranged on different boxes), and the inlet and outlet are determined according to the density of the replaced gas and the density of nitrogen.

[0044] In an embodiment, referring to Figure 1 The utility model also comprises a connecting port 104 arranged on the surface of the left box 100 and / or the right box 200, which is used for connecting a pressure gauge to monitor the gas pressure in the box.

[0045] In an embodiment, the splicing end of the left box 100 and the right box 200 is provided with a convex edge 105, and a bolt hole is arranged on the convex edge 105.

[0046] Specifically, the left box 100 and the right box 200 are connected and fixed by bolts after being spliced.

[0047] It should be noted that if the embodiment of the utility model involves directional indications such as up, down, left, right, front, back, etc., the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture, such as shown in the drawings, and if the specific posture changes, the directional indications also change accordingly.

[0048] In addition, if the embodiment of the utility model involves descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. For example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, "multiple" means more than two. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary technical personnel in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist.

[0049] The above is only a preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A mechanical flange port on-line repair device, characterized in that , comprising: A left box (100) and a right box (200) having an observation window (101) on the top, the two are spliced with each other, and the spliced end has two oppositely arranged semicircular notches (102); A sealing element (300) is rotatably matched with the semicircular notches (102), the sealing element (300) is provided with a hole (301) on the top, and a sleeve wrench (302) is inserted on the hole (301); A spherical joint (400) is embedded on the left box (100) and the right box (200); and A mechanical arm (500) is movably penetrated through the spherical joint (400) and extends into the left box (100) and the right box (200).

2. The mechanical flange mouth on-line repairing device according to claim 1, characterized in that: The sealing element (300) is a semicircular structure matched with the semicircular notches (102).

3. The mechanical flange mouth on-line repairing device according to claim 1, characterized in that: The semicircular notches (102) are provided with grooves matched with the sealing element (300).

4. The mechanical flange mouth on-line repairing device according to claim 1, characterized in that: The left box (100) and the right box (200) are both rectangular structures welded by five metal plates.

5. An online mechanical flange mouth repairing device according to any one of claims 1-4, characterized in that: It also includes two gas replacement openings (103) on the surface of the left box (100) and / or the right box (200) for replacing gas.

6. The mechanical flange mouth on-line repair device according to claim 5, characterized in that: The two gas replacement openings (103) are separately arranged on different surfaces of the left box (100) and / or the right box (200).

7. A mechanical flange mouth repair device as claimed in any one of claims 1 to 4, wherein: It also includes a connecting opening (104) on the surface of the left box (100) and / or the right box (200) for connecting a pressure gauge to monitor the air pressure in the box.

8. The mechanical flange face on-line repair apparatus as claimed in claim 1, wherein: The spliced end of the left box (100) and the right box (200) is provided with a raised edge (105), and the raised edge (105) is provided with a bolt hole.

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