Pressure stabilizing device for pressure test of high-pressure pipeline

Abstract

The invention provides a pressure stabilizing device for high-pressure pipeline pressure test, which comprises a shell, the top of the shell is connected with a cover plate, one end of the side surface of the shell is connected with a butt joint part in a penetrating manner, the butt joint part is used for being in butt joint with a to-be-detected pipeline, the top of the cover plate is provided with an observation window, the top of the cover plate is provided with scale marks, and the scale marks are arranged on the side surface of the observation window. The pipeline pressure testing device comprises a shell, the inner wall of the shell is in sliding connection with an air pressure component, and the end, away from a butt joint component, of the shell is in sliding connection with a locking component. Therefore, the effect that the device is kept in a high-voltage state for a period of time is achieved, the high-voltage detection error of the device is reduced, the detection precision of the device is improved, meanwhile, a worker is prevented from operating the device for a long time through the structure of the locking component, and the operation difficulty of the worker is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline pressure test, in particular to a pressure stabilizing device for high-pressure pipeline pressure test. BACKGROUND

[0002] Pressure pipes, and corresponding desuperheaters, desuperheaters have been widely used in industry, and manufacturing units must carry out strength water pressure test after equipment processing is completed. Because of the different requirements of medium pressure, temperature, flow and device length, the device for strength water pressure test has great difference in pipe diameter, nominal pressure and length, and a strength water pressure test device of one specification cannot meet various different requirements, and manufacturing units often use welded pressure test sealing plates to solve the strength water pressure test, and the pressure test sealing plates need to be cut after the test is completed, and the pipeline needs to be welded with a slope for secondary processing, which is complicated to operate, long in test period, high in manufacturing cost, and difficult to move the device during the test process.

[0003] The Chinese patent with publication number CN211401971U discloses a pipeline pressure test device, which realizes the pressure effect on the pipeline by adding water.

[0004] However, the above-mentioned disclosed scheme has the following disadvantages: the above-mentioned scheme has the problems of great operation difficulty and inaccurate pressure control during actual use

[0005] The present application proposes a pressure stabilizing device for high-pressure pipeline pressure test to solve the above-mentioned problems. SUMMARY

[0006] The purpose of the present application is to generate high-pressure gas pressure in the pipeline by pushing the gas pressure plate, so as to detect the pressure resistance of the pipeline, thereby overcoming the problems in the background art.

[0007] Based on the above technical idea, the technical scheme adopted by the present application is as follows:

[0008] A pressure stabilizing device for high-pressure pipeline pressure test, comprising a shell, a cover plate connected to the top of the shell, a butt joint component penetratingly connected to one end of the side surface of the shell for butt joint with the pipeline to be detected, an observation window provided on the top of the cover plate, a scale line provided on the top of the cover plate, the scale line being provided on the side surface of the observation window, a gas pressure component slidingly connected to the inner wall of the shell, and a locking component slidingly connected to the end of the shell away from the butt joint component.

[0009] Further limitation of the above technical scheme, the butt joint component comprises a butt joint pipe penetratingly connected to the shell, a connecting disc connected to the other end of the butt joint pipe, a branch pipe penetratingly connected to the outer arc surface of the butt joint pipe, and a pressure gauge connected to the other end of the branch pipe for detecting the current gas pressure.

[0010] Further to the above technical solution, the connecting disc is connected with a plurality of butt joints, the plurality of butt joints are different in diameter, the butt joints are connected with sealing members, and the butt joints are used for butt joint with the pipeline.

[0011] Further to the above technical solution, the gas pressure component comprises a gas pressure plate in sliding connection with the inner wall of the shell, the outer side of the gas pressure plate is connected with a sealing ring, one side of the gas pressure plate is connected with a rotating connecting piece, the other end of the rotating connecting piece is rotatably connected with a threaded rod, the threaded rod is in threaded connection with the shell, and the other end of the threaded rod is connected with a handle, the handle is provided with a plurality of transmission holes linearly distributed at equal intervals and used for changing the rotation torque.

[0012] Further to the above technical solution, the transmission hole is internally provided with a transmission handle, one end of the transmission handle is in threaded connection with a locking bolt, and the locking bolt is in contact and extrusion with the side surface of the handle.

[0013] Further to the above technical solution, the locking component comprises a sliding groove arranged on the side surface of the shell, the sliding groove is in sliding connection with a sliding piece, the top of the sliding piece is connected with a connecting rod, the other end of the connecting rod is connected with an arc-shaped damping piece, the arc-shaped damping piece is in contact and extrusion with the outer arc surface of the threaded rod, and the arc-shaped damping piece is used for fixing the threaded rod and preventing accidental rotation of the threaded rod.

[0014] Further to the above technical solution, the top of the sliding piece is in threaded connection with a fixing bolt, the bottom of the fixing bolt penetrates through the sliding piece and is in contact and extrusion with the side surface of the shell, the side surface of the sliding piece is provided with a sliding protrusion in sliding connection with the inner wall of the sliding groove.

[0015] Further to the above technical solution, the locking component is symmetrically arranged on both sides of the threaded rod, and the side surface of the shell is provided with a sealing extrusion piece connected with the connecting joint of the side surface of the cover plate.

[0016] Compared with the prior art, the beneficial effects of the present application are:

[0017] 1. Simple operation, the threaded rod structure of the device can drive the gas pressure plate to slide, thereby realizing the gas pressure control effect of the device, the combination of the observation window and the scale line can facilitate accurate control of the gas pressure of the device, and the gas pressure gauge can observe the internal pressure of the pipeline to determine whether there is pressure leakage in the pipeline.

[0018] 2. Accurate connection, the combination of the connecting disc and the plurality of butt joints can realize the compatibility butt joint effect of the device, and the butt joint not suitable for use is sealed by the sealing member, thereby preventing pressure leakage.

[0019] 3. Accurate detection: This device can fix the current air pressure plate position through the locking component, so that the high pressure environment inside the pipeline can be maintained for a period of time, making the pipeline detection more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Fig. 1 This is a structural schematic diagram of a shell in a pressure stabilizing device for high-pressure pipeline pressure testing according to the present invention;

[0022] Fig. 2 This is a structural schematic diagram of an observation window in a pressure stabilizing device for high-pressure pipeline pressure testing according to the present invention;

[0023] Fig. 3 The present invention is a structural schematic diagram of a locking component in a pressure stabilizing device for high-pressure pipeline pressure testing.

[0024] Among them, 1. Shell; 2. Cover plate; 3. Docking component; 301. Docking pipe; 302. Branch pipe; 303. Pressure gauge; 304. Connecting plate; 305. Docking joint; 306. Seal; 4. Observation window; 5. Scale line; 6. Pneumatic component; 601. Pneumatic plate; 602. Sealing ring; 603. Rotating connector; 604. Threaded rod; 605. Handle; 606. Transmission hole; 607. Transmission handle; 608. Locking bolt; 7. Locking component; 701. Sliding groove; 702. Sliding part; 703. Connecting rod; 704. Arc damping part; 705. Fixing bolt. DETAILED DESCRIPTION

[0025] The following is combined with Figs. 1-3 The present invention is described in further detail.

[0026] Example 1: This example provides a pressure stabilizing device for high-pressure pipeline pressure testing, such as Figs. 1-3 As shown, it includes a shell 1, a cover plate 2 is connected to the top of the shell 1, a docking component 3 is connected through one end of the side of the shell 1, and is used to dock with the pipeline to be tested, an observation window 4 is provided on the top of the cover plate 2, and a scale line 5 is provided on the top of the cover plate 2, and the scale line 5 is set on the side of the observation window 4, an air pressure component 6 is slidably connected to the inner wall of the shell 1, and a locking component 7 is slidably connected to the end of the shell 1 away from the docking component 3.

[0027] The docking part 3 includes a docking pipe 301 connected through the shell 1, the other end of the docking pipe 301 is connected with a connecting disc 304, the outer arc side of the docking pipe 301 is connected through with a branch pipe 302, the other end of the branch pipe 302 is connected with a pressure gauge 303 for detecting the current air pressure.

[0028] The connecting disc 304 is connected with several docking joints 305, the diameters of the several docking joints 305 are different, the docking joints 305 are connected with sealing pieces 306, and the docking joints 305 are used for docking with pipes.

[0029] The air pressure part 6 includes an air pressure plate 601 slidably connected with the inner wall of the shell 1, the outer side of the air pressure plate 601 is connected with a sealing ring 602, one side of the air pressure plate 601 is connected with a rotating connecting piece 603, the other end of the rotating connecting piece 603 is rotatably connected with a threaded rod 604, the other end of the threaded rod 604 is connected with a handle 605, the handle 605 is provided with several transmission holes 606 linearly distributed at equal intervals, and the transmission holes 606 are used for changing the rotation torque.

[0030] The transmission hole 606 is internally provided with a transmission handle 607, one end of the transmission handle 607 is threadedly connected with a locking bolt 608, and the locking bolt 608 is in contact with and extruded by the side of the handle 605.

[0031] The locking part 7 includes a sliding groove 701 arranged on the side of the shell 1, the sliding groove 701 is slidably connected with a sliding piece 702, the top of the sliding piece 702 is connected with a connecting rod 703, the other end of the connecting rod 703 is connected with an arc-shaped damping piece 704, the arc-shaped damping piece 704 is in contact with and extruded by the outer arc surface of the threaded rod 604, and the arc-shaped damping piece 704 is used for fixing the threaded rod 604 to prevent accidental rotation of the threaded rod 604.

[0032] Specific working principle is that: through the device, the pressure detection accuracy of the high-pressure pipe can be effectively improved, compared with the traditional device, the operation of the device is more convenient, and the pressure control is more accurate, when the device is used, the connecting disc 304 and the docking joint 305 can realize the compatibility docking combination of the device and pipes of various sizes, when the device is docked, the other docking joints 305 are sealed by the sealing pieces 306 to prevent pressure leakage, at this time, the threaded rod 604 is driven to rotate by the handle 605, so that the air pressure plate 601 is linearly slid in the shell 1, so that the effect of generating high-pressure air pressure is realized, at this time, the transmission handle 607 can be installed in the transmission holes 606 at different positions according to different workers, so that different sizes of torque are formed, and the workers are convenient for operation.

[0033] After rotating the threaded rod 604 for a period of time, the inside of the pipeline is in a high-pressure air state. At this time, the sliding member 702 slides horizontally, so that the arc-shaped damping member 704 contacts and squeezes the outer arc surface of the threaded rod 604. At this time, rotating the fixing bolt 705 can fix the current position of the sliding member 702, thereby achieving a fixed locking effect on the rotation angle of the threaded rod 604, thereby achieving the effect of maintaining a high-pressure environment for a long time, which is convenient for detecting the pressure maintenance of the pipeline.

[0034] Example 2: This example provides a pressure stabilizing device for high-pressure pipeline pressure testing, such as Figs. 1-3 As shown, the top of the sliding member 702 is threadedly connected with a fixing bolt 705, the bottom of the fixing bolt 705 passes through the sliding member 702 and contacts and squeezes the side of the shell 1, and a sliding protrusion is provided on the side of the sliding member 702, which is slidably connected to the inner wall of the sliding groove 701.

[0035] The locking components 7 are symmetrically arranged on both sides of the threaded rod 604 . A sealing extrusion piece is provided on the side of the housing 1 , and the sealing extrusion piece is connected to the side connection seam of the cover plate 2 .

[0036] The specific working principle is: the locking component 7 can fix the current rotation position of the threaded rod 604 when the pipeline is already in a high-pressure environment, thereby achieving the effect of maintaining the high-pressure state of the device for a period of time, thereby reducing the high-pressure detection error of the device and improving the detection accuracy of the device. At the same time, the structure of the locking component 7 avoids the staff from operating the device for a long time, reducing the difficulty of operation for the staff.

[0037] The above contents are further detailed descriptions of the present invention in conjunction with specific preferred embodiments, so as to facilitate those skilled in the art to understand and apply the present invention. It should not be considered that the specific implementation of the present invention is limited to these descriptions.

Claims

1. A pressure stabilizing device for high-pressure pipeline pressure testing, comprising a housing (1), a cover plate (2) connected to the top of the housing (1), characterized in that: A docking component (3) is connected through one end of the side of the shell (1) for docking with the pipeline to be inspected; an observation window (4) is provided on the top of the cover plate (2); a scale line (5) is provided on the top of the cover plate (2); the scale line (5) is arranged on the side of the observation window (4); an air pressure component (6) is slidably connected to the inner wall of the shell (1); and a locking component (7) is slidably connected to the end of the shell (1) away from the docking component (3).

2. A pressure stabilizing device for high-pressure pipeline pressure testing according to claim 1, characterized in that: The docking component (3) comprises a docking tube (301) connected to the housing (1), the other end of the docking tube (301) being connected to a connection plate (304), a branch tube (302) being connected to the outer arc surface of the docking tube (301), and the other end of the branch tube (302) being connected to a pressure gauge (303) for detecting the current air pressure.

3. A pressure stabilizing device for high-pressure pipeline pressure testing according to claim 2, characterized in that: The connection plate (304) is connected to a plurality of butt joints (305), the diameters of the butt joints (305) are different, the butt joints (305) are connected to sealing members (306), and the butt joints (305) are used for butt jointing with pipelines.

4. A pressure stabilizing device for high-pressure pipeline pressure testing according to claim 3, characterized in that: The pneumatic component (6) includes a pneumatic plate (601) slidably connected to the inner wall of the shell (1), a sealing ring (602) is connected to the outer side of the pneumatic plate (601), a rotating connector (603) is connected to one side of the pneumatic plate (601), the other end of the rotating connector (603) is rotatably connected to a threaded rod (604), the threaded rod (604) is threadedly connected to the shell (1), and the other end of the threaded rod (604) is connected to a handle (605), and the handle (605) is provided with a plurality of transmission holes (606) distributed at equal intervals and linearly for changing the rotational torque.

5. A pressure stabilizing device for high-pressure pipeline pressure testing according to claim 4, characterized in that: A transmission handle (607) is provided inside the transmission hole (606), and one end of the transmission handle (607) is threadedly connected to a locking bolt (608), and the locking bolt (608) contacts and squeezes the side of the handle (605).

6. A pressure stabilizing device for high-pressure pipeline pressure testing according to claim 5, characterized in that: The locking component (7) comprises a sliding groove (701) provided on the side of the housing (1); the sliding groove (701) is slidably connected to a sliding member (702); a connecting rod (703) is connected to the top of the sliding member (702); the other end of the connecting rod (703) is connected to an arc-shaped damping member (704); the arc-shaped damping member (704) contacts and squeezes the outer arc surface of the threaded rod (604) to fix the threaded rod (604) and prevent it from rotating accidentally.

7. A pressure stabilizing device for high-pressure pipeline pressure testing according to claim 6, characterized in that: The top of the sliding member (702) is threadedly connected to a fixing bolt (705), the bottom of the fixing bolt (705) passes through the sliding member (702) and contacts and presses against the side of the housing (1), and a sliding protrusion is provided on the side of the sliding member (702), and the sliding protrusion is slidably connected to the inner wall of the sliding groove (701).

8. A pressure stabilizing device for high-pressure pipeline pressure testing according to claim 7, characterized in that: The locking components (7) are symmetrically arranged on both sides of the threaded rod (604), and a sealing extrusion piece is provided on the side of the housing (1), and the sealing extrusion piece is connected to the side connection seam of the cover plate (2).

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