CN202485872U - Hydraulic oil pipe wall defect detection device - Google Patents

Abstract

The utility model discloses a detection device for the wall defect of a hydraulic oil pipe. The device comprises sealing parts at both ends of the oil pipe, a support part and a fixing part of the oil pipe; On the support, the fixed support is connected to the base plate, the other end of the oil pipe is flattened with the end face gasket and the pump oil joint, the pump oil joint is threaded with the connection sleeve and the seal is pressed tightly, and the end of the pump oil joint is tightly attached to the adjustable support. seat, the adjustable support is fixed with the base plate. This device is used to check whether there are defects (such as microcracks) in the pipe wall of hydraulic oil pipes. By injecting hydraulic oil slightly higher than the pressure of the working condition into the oil pipes, the test detects whether there are microcracks, leakage points and other hidden dangers in the pipe wall. Oil pipe rupture or oil leakage occurs during the use of the equipment, resulting in the loss of installed equipment and other human, material, financial and time losses, improving the reliability of the equipment. The technology of the device can also be used for detection of other pressure-resistant pipe profiles.

Description

A hydraulic oil pipe wall defect detection device

technical field

The utility model relates to a detection device for a pressure-resistant pipeline, in particular to a detection device for the wall defect of a hydraulic oil pipe.

Background technique

In hydraulic pipelines or oil pipe products, oil pipes made of different materials may have inherent defects (such as microcracks or micropores) in the pipe wall after manufacture, which may cause oil leakage failures in the product under pressure. , resulting in direct equipment loss and other human, material, financial and time losses due to oil pipe rupture or oil leakage during the use of the equipment.

At present, ultrasonic detectors are generally used for pipe wall flaw detection for professional testing equipment, but due to the high purchase cost, ordinary companies are reluctant to purchase, but there is no reliable guarantee for the quality of purchased oil pipes during product production. This technology adopts a set of testing devices made at a relatively low cost. Through the pressure test on the oil pipe, it can detect whether there are hidden dangers such as micro-cracks and leakage points on the pipe wall, which can effectively improve the reliability of the equipment.

Utility model content

The utility model solves the shortcomings of the prior art. According to the working principle and technical requirements of the oil pipe used in the product, the oil pipe wall is inspected by adding a pressure oil slightly larger than the same as the practical working condition of the pipe fittings into the inner cavity of the oil pipe and maintaining the pressure for 1.5 hours. Are there any cracks or leaks. the

The hydraulic oil pipe wall defect detection device described in the utility model, the device includes the seals at both ends of the oil pipe, the support and the oil pipe fixing part; one end of the oil pipe is inserted into the sealing sleeve equipped with an O-shaped sealing ring, and the sealing sleeve is placed on the fixed support On the seat, the fixed support is connected to the base plate, the other end of the oil pipe is flattened with the end face gasket and the pump oil joint, the pump oil joint is threadedly connected with the connecting sleeve and the seal is pressed, and the end of the pump oil joint is tightly attached to the adjustable support , the adjustable support is fixed with the base plate.

Moreover, when the oil pipe to be tested is long, the oil pipe clamping support can be used to adjust the clamped oil pipe.

Moreover, the fixed support is provided with a V-shaped groove platform supporting the sealing sleeve of the oil pipe.

Moreover, both ends of the oil pipe to be tested are sealed to form a pressure-bearing inner cavity.

Moreover, the length direction can be moved and adjusted according to the length of the oil pipe to be tested. The base plate is made with two rows of screw holes at equal intervals along the length direction of the tube. It can be adjusted according to the length of the oil pipe to be tested, and then compressed with fasteners. the

Moreover, the oil pipe clamping support can be adjusted up and down according to the pipe diameter of the oil pipe to be tested. The bottom support block of the oil pipe clamping support has a V-shaped groove and a round hole on the side. The oil pipe rests on the V-shaped groove and is pressed on the oil pipe clamping support. The lower part of the block is also a V-shaped groove in contact with the oil pipe, and the upper part is connected with the screw rod. The distance between the upper and lower openings of the bottom support block and the compression block can be adjusted according to the pipe diameter and tightened.

The utility model has the advantages of simple structure, low manufacturing cost and easy operation. According to the expansion of the technology of the utility model, it can be applied to pressure detection of various pipe fittings.

Description of drawings

Fig. 1 is a schematic structural diagram of the oil pipe to be tested described in the embodiment.

Figure 2 is a structural schematic diagram of the utility model hydraulic oil pipe wall defect detection device.

Figure 3 is a schematic diagram of the structure of the tubing clamping support.

FIG. 4 is a schematic diagram of the structure in direction P of the oil pipe clamping support described in FIG. 3 .

Among them, 1-fixed support; 2-oil pipe sealing sleeve; 3-O type sealing ring; 4-oil pipe clamping support; 5-oil pipe; 6-connecting sleeve; 7-end face gasket; -Adjustable support; 10-base plate; 11-V-shaped groove platform; 12-bottom support block; 13-upper compression block; 14-screw.

Detailed ways

Below in conjunction with accompanying drawing, content of the present utility model is described further.

The oil pipe to be tested in this embodiment is an oil pipe with a welding sleeve at one end (see Figure 1).

Connect the fixed support 1 and the base plate 10 firmly with fasteners, put the O-ring 3 into the corresponding oil pipe sealing sleeve 2, put the oil pipe sealing sleeve 2 on the fixed support 1, and the fixed support 1 is provided with a bracket Hold the V-shaped groove platform 11 of the oil pipe sealing sleeve 2, and then insert the left end of the oil pipe 5 (the end without the welding sleeve) into the corresponding sealing sleeve 2, and the outer surface of the oil pipe is the sealing surface; The surface and the left end surface of the pump oil joint 8 are flattened, and the connecting sleeve 6 is tightened until the gasket 7 is pressed tightly, and then the adjustable support 9 is adjusted to be close to the pump oil joint 8, and the bottom of the adjustable support 9 can move forward and backward on the base plate 10 ( The base plate has two rows of screw holes at equal intervals along the length of the tube, and the bottom plate of the adjustable support has two rows of round holes corresponding to the length of the base plate screw holes. Compress). Then adjust the oil pipe clamping support 4 to clamp the oil pipe (the bottom support block of the oil pipe clamping support has a V-shaped groove, and the side is connected with the waist round hole of the support bracket, which can be adjusted up and down. The oil pipe 5 rests on the V-shaped groove, and the oil pipe clamp The lower part of the tight support upper compression block 13 is also a V-shaped groove in contact with the oil pipe, and the upper part is connected with the screw rod 14. The upper compression block 13 can be adjusted up and down by rotation, and the distance between the bottom support block 12 and the upper and lower openings of the compression block is adjusted according to the pipe diameter and tightened. solid) to prevent possible movement of the tubing under high pressure. After checking that each connection is fastened correctly, the right end of the pump oil connector 8 is connected to the pump pressure oil pipe, and after tightening, the pressurization test can be carried out. When the hydraulic oil is connected and pressurized gradually to the set pressure, the oil pressure in the inner cavity of the oil pipe will rise from low to high to the inspection pressure parameter required by the technology and maintain the pressure. During this process, observe whether there is oil injection or leakage on the entire outer surface of the oil pipe. Oil, if oil spray is found, it indicates that the oil pipe has cracks, and if oil leakage is found, it indicates that the oil pipe has leakage points.

The hydraulic oil pipe wall defect detection device described in the utility model is not only applicable to the oil pipe with a welding sleeve at one end, but also can be used to detect the pipe wall defects of other types of oil pipes.

Claims (6)

1. A hydraulic oil pipe wall defect detection device, characterized in that: the device includes seals at both ends of the oil pipe, supports and oil pipe fixing parts; one end of the oil pipe is inserted into a sealing sleeve equipped with an O-ring, and the sealing sleeve is placed on the On the fixed support, the fixed support is connected to the base plate, the other end of the oil pipe is flattened with the end face gasket and the pump oil joint, the pump oil joint is threaded with the connection sleeve and the seal is pressed, and the end of the pump oil joint is tightly attached and adjustable A support, the adjustable support is fixed to the base plate. 2 . The device for detecting the wall defect of the hydraulic oil pipe according to claim 1 , wherein the oil pipe clamping support is adjusted to clamp the oil pipe. 3 . 3. The device for detecting defects of the hydraulic oil pipe wall according to claim 1, characterized in that, the fixed support is provided with a V-shaped groove platform for supporting the sealing sleeve of the oil pipe. 4. The device for detecting defects of the hydraulic oil pipe wall according to claim 1, characterized in that, both ends of the oil pipe are sealed to form a pressure-bearing inner cavity. 5. The hydraulic oil pipe wall defect detection device according to claim 1, characterized in that the length direction can be moved and adjusted according to the length of the oil pipe to be tested, and the base plate is made with two columns of screw holes at equal intervals along the length direction of the pipe, which can be adjusted. The bottom plate of the support has two rows of round holes corresponding to the length of the screw holes on the base plate, which can be adjusted according to the length of the oil pipe to be tested, and then tightened with fasteners. 6. The hydraulic oil pipe wall defect detection device according to claim 2, characterized in that the oil pipe clamping support can be adjusted up and down according to the pipe diameter of the oil pipe to be tested, the bottom support block of the oil pipe clamping support has a V-shaped groove, and the side has a V-shaped groove. Waist round hole, the oil pipe rests on the V-shaped groove, the lower part of the pressure block on the oil pipe clamping support is also a V-shaped groove in contact with the oil pipe, and the upper part is connected with the screw rod. The distance between the bottom support block and the pressure block can be adjusted according to the pipe diameter. Implement fastening.

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