Non-destructive testing device for end socket of pressure vessel

Abstract

The utility model provides a nondestructive testing device for a pressure vessel end socket, belongs to the field of pressure vessel end socket detection, and aims to solve the problem that the fixing stability of the pressure vessel end socket and a detection table affects a detection result. Two swing arm oil cylinders are symmetrically connected to the rear side of the top end face of the supporting base, two fixing rings are symmetrically hinged to the middle of the rear side of the top end face of the supporting base, a rotary swing arm is rotationally connected to the top of the middle of the rear side of the top end face of the supporting base, and a control motor is fixedly installed in the rotary swing arm. The top of the front end of the rotary swing arm is fixedly connected with a pressurizing oil cylinder; according to the nondestructive testing device for the pressure vessel end socket, the telescopic front ends of the swing arm oil cylinders are connected with the swing arm connecting seats of the fixing rings, so that the two fixing rings are controlled to be closed and connected to the bottom of the outer side wall of the pressure vessel end socket through the two swing arm oil cylinders, and the pressure vessel end socket is fixed; and the displacement problem during the detection of the pressure vessel end socket is prevented, so that the detection accuracy is better ensured.

Description

Technical Field

[0001] This utility model relates to the field of pressure vessel head inspection technology, and in particular to a non-destructive testing device for pressure vessel heads. Background Technology

[0002] A head is a component used to seal the end of a container and isolate the internal and external media. It is also called an end cap. The heads of cylindrical containers are generally rotating shells. Therefore, pressure vessels often use welding to weld two heads to both ends to ensure the sealing of the pressure vessel. When existing pressure vessel head testing devices test pressure vessel heads, the shape of the pressure vessel heads is usually arc-shaped, which is inconvenient to fix. In addition, the pressure vessel heads are prone to displacement during testing, which leads to testing interruption and affects testing efficiency and test results. Utility Model Content

[0003] The purpose of this invention is to provide a non-destructive testing device for pressure vessel heads, in order to solve the problems mentioned in the background art, such as the fact that the shape of pressure vessel heads is usually arc-shaped, which makes them inconvenient to fix and causes displacement problems, resulting in interruption of testing and affecting testing efficiency and test results.

[0004] The purpose and effectiveness of this utility model pressure vessel head non-destructive testing device are achieved through the following specific technical means:

[0005] A non-destructive testing device for pressure vessel heads, comprising a support base; a tee pipe is fixedly connected to the middle of the bottom end face of the support base, and solenoid valves are fixedly connected to the bottom and right side of the tee pipe; two swing arm cylinders are symmetrically connected to the rear side of the top end face of the support base; two fixing rings are symmetrically hinged to the middle of the rear side of the top end face of the support base; a rotating swing arm is rotatably connected to the top of the middle of the rear side of the top end face of the support base; a control motor is fixedly installed in the rotating swing arm; and a pressure cylinder is fixedly connected to the top of the front end of the rotating swing arm.

[0006] Furthermore, two rotating connecting rods are symmetrically installed on the rear side of the top end face of the support base. The rotating connecting rods are rotatably connected to the bottom of the swing arm cylinder. A rear column is fixedly connected to the middle of the rear side wall of the top end face of the support base. A pressure seat is slidably connected to the rear column. The top front side of the pressure seat is connected to the telescopic bottom end of the control motor. A hinge seat is fixedly installed on the bottom front side of the rear column.

[0007] Furthermore, a protruding support end cap is fixedly installed at the middle of the top end face of the support base. A sealing ring is connected to the support end cap. The middle of the support end cap is connected to a three-way pipe. The bottom of the three-way pipe is connected to a solenoid valve and a water supply pipe. The right side of the three-way pipe is connected to a solenoid valve and an air supply pipe.

[0008] Furthermore, two fixed rings are symmetrically arranged in a semi-circular shape. The rear ends of the two fixed rings are hinged to the hinge seat on the rear side of the top end face of the support base. A swing arm connecting seat is fixedly installed on the rear side of the outer side wall of the two fixed rings. The swing arm connecting seat is hinged to the telescopic front end of the swing arm cylinder.

[0009] Furthermore, a meshing toothed ring is fixedly connected to the top of the rear column at the middle of the rear side of the top end face of the support base. An inner groove is opened at the bottom rear end of the rotating swing arm. The inner groove is rotatably connected to the top of the rear column. Three transmission gears are rotatably connected in a ring array in the inner groove. All three transmission gears are meshed with the inner side wall of the meshing toothed ring.

[0010] Furthermore, the control motor is fixedly installed in the upper cavity of the inner groove at the bottom of the rotating swing arm, and a drive gear is fixedly connected to the bottom end of the drive shaft of the control motor. The outer wall of the drive gear is meshed with the middle of the three transmission gears connected in the inner groove.

[0011] This utility model provides a non-destructive testing device for pressure vessel heads, which has the following beneficial effects:

[0012] 1. A support end cap is installed at the middle of the top end face of the support base to mate with the end cap of the pressure vessel. A sealing ring is installed at the mating point to improve the sealing performance, thereby avoiding the problem of insufficient sealing and pressure leakage during pressure vessel end cap testing. The support end cap is connected to a tee pipe. Water is injected into the cavity formed by the support end cap and the pressure vessel end cap through a solenoid valve connected to the bottom of the tee pipe and a water supply pipe. After the cavity is full of water, air is pressurized through a solenoid valve connected to the right side of the tee pipe and an air supply pipe, thereby further increasing the pressure in the cavity formed by the support end cap and the pressure vessel end cap. This allows for better detection of defects in the pressure vessel end cap without damaging it.

[0013] 2. By connecting the telescopic front end of the swing arm cylinder to the swing arm connecting seat of the fixed ring, the two fixed rings are controlled by the two swing arm cylinders to be connected to the bottom of the outer wall of the pressure vessel head, thus forming a fixed effect on the pressure vessel head and preventing displacement problems during the inspection of the pressure vessel head, so as to better ensure the accuracy of the inspection.

[0014] 3. By controlling the drive gear of the motor to drive the transmission gear to rotate, and then changing the position of the rotating arm through the meshing of the transmission gear and the meshing gear ring, the pressure cylinder is positioned directly above the pressure vessel head. The rotation of the rotating arm also reduces the ease of placing and removing the pressure vessel head. When the pressure cylinder is directly above the pressure vessel head, the pressure cylinder controls the pressure seat to press tightly against the pressure vessel head, thereby preventing loosening at the connection between the pressure vessel head and the support head. This greatly helps to improve the accuracy of the pressure vessel head inspection results. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the right front side axial view structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure from a low angle on the right front side of this utility model;

[0017] Figure 3 This is a schematic diagram of the overall disassembled right front side axial view structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the overall disassembled left rear axis view of this utility model;

[0019] Figure 5 This is a cross-sectional bottom view of the rear column and rotating swing arm of this utility model;

[0020] Figure 6 This is a cross-sectional axial view of the rear column and rotating swing arm of this utility model.

[0021] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0022] 1. Support base; 101. T-pipe; 102. Rotating connecting rod; 103. Support end cap; 104. Sealing ring; 105. Rear column; 106. Engaging gear ring; 107. Hinge seat; 2. Solenoid valve; 3. Swing arm cylinder; 4. Fixing ring; 401. Swing arm connecting seat; 5. Pressure seat; 6. Rotating swing arm; 601. Inner groove; 7. Pressure cylinder; 8. Control motor; 801. Drive gear; 9. Transmission gear. Detailed Implementation

[0023] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.

[0024] Example 1:

[0025] As attached Figure 1 To be continued Figure 6 As shown:

[0026] This utility model provides a non-destructive testing device for pressure vessel heads, comprising: a support base 1; a three-way pipe 101 fixedly connected to the middle of the bottom end face of the support base 1, with solenoid valves 2 fixedly connected to the bottom and right side of the three-way pipe 101; two swing arm cylinders 3 symmetrically connected to the rear side of the top end face of the support base 1; two fixing rings symmetrically hinged to the middle of the rear side of the top end face of the support base 1; a rotating swing arm 6 rotatably connected to the top of the middle of the rear side of the top end face of the support base 1, with a control motor 8 fixedly installed in the rotating swing arm 6; a pressure cylinder 7 fixedly connected to the top of the front end of the rotating swing arm 6; a protruding support head 103 fixedly installed in the middle of the top end face of the support base 1, with a sealing ring 104 connected to the support head 103; the middle of the support head 103 communicating with the three-way pipe 101; and a solenoid valve 2 connected to the bottom of the three-way pipe 101. The water pipe is connected to the solenoid valve 2 on the right side of the tee pipe 101, which is connected to the air supply pipe. Specifically, by setting a support end cap 103 at the middle of the top end face of the support base 1 to mate with the end cap of the pressure vessel, and setting a sealing ring 104 at the mating point to improve the connection sealing, the problem of insufficient sealing and pressure leakage during the inspection of the pressure vessel end cap is avoided. The support end cap 103 and the tee pipe 101 are connected, and water is injected into the cavity formed by the support end cap 103 and the pressure vessel end cap through the solenoid valve 2 connected to the bottom of the tee pipe 101 and the water supply pipe. After the water is full, air is pressurized through the solenoid valve 2 on the right side of the tee pipe 101 and the air supply pipe, thereby further increasing the pressure in the cavity formed by the support end cap 103 and the pressure vessel end cap, so as to better detect defects in the pressure vessel end cap without damaging the pressure vessel end cap.

[0027] Two rotating connecting rods 102 are symmetrically installed on the rear side of the top end face of the support base 1. The rotating connecting rods 102 are rotatably connected to the bottom of the swing arm cylinder 3. A rear column 105 is fixedly connected to the middle of the rear side wall of the top end face of the support base 1. A hinge seat 107 is fixedly installed on the front side of the bottom of the rear column 105. Two fixing rings 4 are symmetrically arranged in a semi-circular shape. The rear ends of the two fixing rings 4 are hinged to the hinge seat 107 on the rear side of the top end face of the support base 1. A swing arm connecting seat 401 is fixedly installed on the rear side of the outer side wall of the two fixing rings 4. The swing arm connecting seat 401 is hinged to the telescopic front end of the swing arm cylinder 3. Specifically, by connecting the telescopic front end of the swing arm cylinder 3 and the swing arm connecting seat 401 of the fixing ring 4, the two fixing rings 4 are controlled by the two swing arm cylinders 3 to be connected to the bottom of the outer side wall of the pressure vessel head, thus forming a fixed effect on the pressure vessel head and preventing displacement problems during the inspection of the pressure vessel head, so as to better ensure the accuracy of the inspection.

[0028] The rear column 105 at the middle of the rear side of the top end face of the support base 1 is fixedly connected to the top of the engagement gear ring 106. The bottom rear end of the rotating arm 6 has an inner groove 601, which is rotatably connected to the top of the rear column 105. Three transmission gears 9 are rotatably connected in a circular array within the inner groove 601. All three transmission gears 9 are meshed with the inner wall of the engagement gear ring 106. The control motor 8 is fixedly installed in the upper cavity of the inner groove 601 at the bottom of the rotating arm 6. A drive gear 801 is fixedly connected to the bottom end of the drive shaft of the control motor 8. The outer wall of the drive gear 801 meshes with the middle of the three transmission gears 9 connected in the inner groove 601. A sliding connection is made to the rear column 105. The pressure seat 5 is connected to the top front side of the control motor 8 and the telescopic bottom end. Specifically, the control motor 8 drives the transmission gear 9 to rotate through the drive gear 801. Then, the transmission gear 9 and the meshing gear ring 106 change the position of the rotating arm 6 so that the pressure cylinder 7 is directly above the pressure vessel head. The rotation of the rotating arm 6 also reduces the ease of picking up and putting down the pressure vessel head. When the pressure cylinder 7 is directly above the pressure vessel head, the pressure seat 5 is pressed tightly against the pressure vessel head by the pressure cylinder 7, thereby preventing loosening at the connection between the pressure vessel head and the support head 103. This is helpful in improving the accuracy of the pressure vessel head inspection results.

[0029] The specific usage and function of this embodiment are as follows:

[0030] When using this pressure vessel head non-destructive testing device, a support head 103 is installed at the middle of the top end face of the support base 1 to mate with the pressure vessel head. A sealing ring 104 is installed at the mating point to improve the connection sealing, thereby avoiding the problem of insufficient sealing and pressure leakage during pressure vessel head testing. The telescopic front end of the swing arm cylinder 3 is connected to the swing arm connecting seat 401 of the fixed ring 4. Thus, the two swing arm cylinders 3 control the two fixed rings 4 to be connected side by side to the bottom of the outer wall of the pressure vessel head, forming a fixing effect on the pressure vessel head and preventing displacement during pressure vessel head testing. The drive gear 801 of the motor 8 drives the transmission gear 9 to rotate, and then the position of the rotating swing arm 6 is changed by the meshing of the transmission gear 9 and the meshing gear ring 106. To ensure that the pressurizing cylinder 7 is positioned directly above the pressure vessel head, and to reduce the ease of removing and placing the pressure vessel head by rotating the swing arm 6, when the pressurizing cylinder 7 is directly above the pressure vessel head, the pressurizing seat 5 is pressed tightly against the pressure vessel head by the pressurizing cylinder 7, thereby preventing loosening at the connection between the pressure vessel head and the support head 103. The support head 103 is connected to the three-way pipe 101, and water is injected into the cavity formed by the support head 103 and the pressure vessel head through the solenoid valve 2 connected to the bottom of the three-way pipe 101 and the water supply pipe. After the cavity is full of water, air is pressurized through the solenoid valve 2 on the right side of the three-way pipe 101 and the air supply pipe, thereby further increasing the pressure in the cavity formed by the support head 103 and the pressure vessel head, so as to better detect defects in the pressure vessel head.

[0031] Example 2:

[0032] By installing an ultrasonic testing probe in the top end face of the support head 103, the integrity of the inner wall of the pressure vessel head and whether the inner wall is intact can be detected by the ultrasonic testing probe.

Claims

1. A non-destructive testing device for pressure vessel heads, characterized in that: Includes a support base (1); a three-way pipe (101) is fixedly connected to the middle of the bottom end face of the support base (1), and a solenoid valve (2) is fixedly connected to the bottom and right side of the three-way pipe (101). Two swing arm cylinders (3) are symmetrically connected to the rear side of the top end face of the support base (1). Two fixing rings (4) are symmetrically hinged to the middle of the rear side of the top end face of the support base (1). A rotating swing arm (6) is rotatably connected to the top of the middle of the rear side of the top end face of the support base (1). A control motor (8) is fixedly installed in the rotating swing arm (6). A pressure cylinder (7) is fixedly connected to the top of the front end of the rotating swing arm (6).

2. The non-destructive testing device for pressure vessel heads according to claim 1, characterized in that: Two rotating connecting rods (102) are symmetrically installed on the rear side of the top end face of the support base (1). The rotating connecting rods (102) are rotatably connected to the bottom of the swing arm cylinder (3). A rear column (105) is fixedly connected to the middle of the rear side wall of the top end face of the support base (1). A pressure seat (5) is slidably connected on the rear column (105). The front top of the pressure seat (5) is connected to the telescopic bottom of the control motor (8). A hinge seat (107) is fixedly installed on the front bottom of the rear column (105).

3. The non-destructive testing device for pressure vessel heads according to claim 1, characterized in that: A raised support head (103) is fixedly installed at the middle of the top end face of the support base (1). A sealing ring (104) is connected to the support head (103). The middle of the support head (103) is connected to the three-way pipe (101). The bottom of the three-way pipe (101) is connected to the solenoid valve (2) and the water supply pipe. The right side of the three-way pipe (101) is connected to the solenoid valve (2) and the air supply pipe.

4. The non-destructive testing device for pressure vessel heads according to claim 1, characterized in that: The two fixed rings (4) are symmetrically arranged in a semi-circular shape. The rear ends of the two fixed rings (4) are hinged to the hinge seat (107) on the rear side of the top end face of the support base (1). The rear side of the outer wall of the two fixed rings (4) is fixedly installed with a swing arm connecting seat (401). The swing arm connecting seat (401) and the telescopic front end of the swing arm cylinder (3) are hinged together.

5. The non-destructive testing device for pressure vessel heads according to claim 1, characterized in that: The top of the rear column (105) at the middle of the rear side of the top end face of the support base (1) is fixedly connected to the top of the meshing tooth ring (106). The bottom rear end of the rotating swing arm (6) is provided with an inner groove (601). The inner groove (601) is rotatably connected to the top of the rear column (105). Three transmission gears (9) are rotatably connected in a ring array in the inner groove (601). All three transmission gears (9) are meshed and connected to the inner side wall of the meshing tooth ring (106).

6. The non-destructive testing device for pressure vessel heads according to claim 1, characterized in that: The control motor (8) is fixedly installed in the upper cavity of the inner groove (601) at the bottom of the rotating arm (6). The bottom end of the drive shaft of the control motor (8) is fixedly connected to the drive gear (801). The outer wall of the drive gear (801) is meshed with the middle of the three transmission gears (9) connected in the inner groove (601).

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