Oil pipe swelling capacity detector

Abstract

The invention relates to the field of hydraulic transmission and hydraulic braking system detection, and discloses an oil pipe swelling capacity detector. A hydraulic medium Y-shaped seal is fixedly connected to the outer surface of a hydraulic medium sealing cavity, a display liquid sealing cavity is fixedly connected to the outer surface of the hydraulic medium Y-shaped seal, a measuring tube supporting rod is welded to the upper surface of the hydraulic medium Y-shaped seal, and a high-precision measuring tube is fixedly connected to the upper surface of the display liquid sealing cavity. The high-precision measuring tube is fixedly supported on the measuring tube supporting rod, the plunger is arranged on the inner surface of the display liquid sealing cavity, the hydraulic medium sealing cavity, the hydraulic medium Y-shaped seal, the display liquid sealing cavity and the high-precision measuring tube form a main to-be-detected cavity and are all rigid structural parts, the deformation can be ignored, it is ensured that the measuring result is accurate, and overall operable parts are arranged on the upper portion. The plunger is arranged in the display liquid sealing cavity, so that the whole display liquid sealing cavity is horizontal, the stress is better facilitated, the air pressure in the cavity is more stable, and the test quality is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of hydraulic transmission and hydraulic brake system detection, in particular to an oil pipe expansion detection instrument. Background Art

[0002] The tubing expansion detector is a device used to detect the expansion of coiled tubing during production. This device is crucial to ensuring the quality and safety of tubing, and can promptly detect and handle structural problems caused by uneven expansion, thereby ensuring the smooth progress of oil and gas production operations.

[0003] The tubing expansion detector uses a high-temperature dynamic test method and precision sensors to monitor the expansion of the tubing in real time during the production process, thereby ensuring the quality and safety of the tubing. Its technical features include multi-joint testing capabilities, high sensitivity, and the advantage of being unaffected by the environment, and can quickly and accurately identify abnormal expansion of the tubing. This equipment is widely used in the field of oil and gas production, especially in the production and use of continuous tubing, and is of great significance to ensuring the safety of oil wells and increasing oil and gas production. Hydraulic tubing detection is of great significance to the oil volume design and control of the hydraulic system.

[0004] The existing detection equipment on the market has low accuracy, complex operation and high price. Summary of the invention

[0005] The purpose of the present invention is to provide an oil pipe expansion detector in order to solve the above-mentioned problems that the existing detection equipment on the market is low in accuracy, complicated to operate and expensive.

[0006] The technical solution adopted by the present invention is as follows: an oil pipe expansion detector comprises a hydraulic medium sealing cavity, the outer surface of the hydraulic medium sealing cavity is fixedly connected with a hydraulic medium Y-type seal, the outer surface of the hydraulic medium Y-type seal is fixedly connected with a display liquid sealing cavity, a measuring tube support rod is welded to the upper surface of the hydraulic medium Y-type seal, a high-precision measuring tube is fixedly connected to the upper surface of the display liquid sealing cavity, the high-precision measuring tube is fixedly supported on the measuring tube support rod, and a plunger is arranged on the inner surface of the display liquid sealing cavity.

[0007] By adopting the above technical scheme, the hydraulic medium sealing chamber, hydraulic medium Y-type seal, display liquid sealing chamber and high-precision measuring tube constitute the main chamber to be tested, which are all rigid structural parts and the deformation can be ignored to ensure accurate measurement results. The overall operable parts are placed on top to facilitate manual operation. By building a plunger into the display liquid sealing chamber, the whole is horizontal, which is more convenient for force, and the air pressure in the chamber is more stable to ensure the test quality.

[0008] In a preferred embodiment, a brake fluid exhaust valve is fixedly connected to the upper surface of the hydraulic medium sealing chamber, and a display fluid exhaust valve is fixedly connected to the upper surface of the display fluid sealing chamber.

[0009] By adopting the above technical scheme, the brake fluid exhaust valve is convenient for depressurizing at the braking end after the test is completed, so as to avoid deformation of the equipment caused by different pressures and affect the subsequent test. The display fluid exhaust valve is depressurized at the display end after the test is completed. The display fluid exhaust valve and the brake fluid exhaust valve ensure that the oil pipe being tested can be taken out after the air pressure is stable as a whole.

[0010] In a preferred embodiment, a high-precision sleeve A is fixedly connected to the outer surface of the display liquid sealing cavity, and a sealing tube is fixedly connected to the outer surface of the high-precision sleeve A.

[0011] By adopting the above technical solution, the high-precision sleeve A ensures further sealing stability of the sealing tube.

[0012] In a preferred embodiment, a high-precision sleeve B is fixedly connected to the outer surface of the sealing tube, and a compression nut is fixedly connected to the outer surface of the high-precision sleeve B.

[0013] By adopting the above technical solution, the clamping nut can be easily stressed, thereby squeezing to cause internal pressure changes, and completing equipment testing. The high-precision sleeve B also protects the clamping nut to achieve the internal sealing effect of the equipment when it is stressed.

[0014] In a preferred embodiment, the outer surface of the hydraulic medium sealing cavity away from the hydraulic medium Y-shaped seal end is fixedly connected to a tee, the upper surface of the tee is fixedly connected to the measured oil pipe, and the lower surface of the tee is provided with a high-precision pressure gauge.

[0015] By adopting the above technical solution, the oil pipe to be tested is fixed on the top by crimping after being sleeved. After continuous operation, the pressure reading is obtained by a high-precision pressure gauge, and the tee is convenient for the connection of the interface.

[0016] In a preferred embodiment, a support seat is fixedly connected to the outer surface of the hydraulic medium sealing cavity, a support plate is welded to the lower surface of the support seat, and a bottom plate is welded to the lower surface of the support plate.

[0017] By adopting the above technical solution, the base plate provides a stable contact surface for the placement of the equipment, and the support seat and support plate fix the components of the detection equipment on the top to ensure stable operation.

[0018] In a preferred embodiment, a rectangular screw is provided on the outer surface of the support seat corresponding to the clamping nut, and a hand wheel is welded on the outer surface of the rectangular screw.

[0019] By adopting the above technical solution, the hand wheel is rotated to make the end face of the rectangular screw contact the end face of the plunger, and the plunger is slowly pushed to the left, so as to facilitate the measurement of the change in the reading.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0021] 1. The hydraulic medium sealing chamber, hydraulic medium Y-type sealing chamber, display liquid sealing chamber and high-precision measuring tube constitute the main chamber to be tested. They are all rigid structural parts, and the deformation can be ignored to ensure accurate measurement results. The overall operable parts are placed on top, which is convenient for manual operation. By building a plunger into the display liquid sealing chamber, the whole is horizontal, which is more convenient for force bearing. The air pressure in the chamber is more stable, ensuring the test quality. Except for the oil pipe to be tested, the rest of the equipment are rigid structural parts, and the deformation can be ignored to ensure accurate measurement results.

[0022] 2. Except for the valve body and plunger which are self-made parts, the rest are standard parts and can be purchased directly at low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of an isometric test of the device of the present invention;

[0024] Figure 2 It is a side schematic diagram of the device in the present invention;

[0025] Figure 3 A top view of the device in the present invention;

[0026] Figure 4 It is a front view schematic diagram of the device in the present invention;

[0027] Figure 5 It is a schematic diagram of the reverse side of the device in the present invention.

[0028] Markings in the figure: 1. Hydraulic medium sealing chamber; 2. Hydraulic medium Y-type seal; 3. Display liquid sealing chamber; 4. High-precision measuring tube; 5. Display liquid exhaust valve; 6. Brake fluid exhaust valve; 7. High-precision sleeve A; 8. Sealing tube; 9. High-precision sleeve B; 10. Pressing nut; 11. Tee; 12. Measured oil pipe; 13. High-precision pressure gauge; 14. Support seat; 15. Support plate; 16. Bottom plate; 17. Rectangular screw; 18. Handwheel; 19. Measuring tube support rod. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example:

[0031] Reference Figure 1-5 The oil pipe expansion detector includes a hydraulic medium sealing chamber 1, a hydraulic medium Y-type seal 2 is fixedly connected to the outer surface of the hydraulic medium sealing chamber 1, a display liquid sealing chamber 3 is fixedly connected to the outer surface of the hydraulic medium Y-type seal 2, a measuring tube support rod 19 is welded to the upper surface of the hydraulic medium Y-type seal 2, a high-precision measuring tube 4 is fixedly connected to the upper surface of the display liquid sealing chamber 3, the high-precision measuring tube 4 is fixedly supported on the measuring tube support rod 19, and a plunger is arranged on the inner surface of the display liquid sealing chamber 3.

[0032] In this invention, the hydraulic medium sealing chamber 1, the hydraulic medium Y-type seal 2, the display liquid sealing chamber 3, and the high-precision measuring tube 4 constitute the main chamber to be tested, which are all rigid structural parts, and the deformation can be ignored to ensure the accuracy of the measurement result. The overall operable parts are placed on top to facilitate manual operation. By building a plunger into the display liquid sealing chamber 3, the whole is horizontal, which is more convenient for force, and the air pressure in the chamber is more stable to ensure the test quality.

[0033] Reference Figure 1-5 A brake fluid exhaust valve 6 is fixedly connected to the upper surface of the hydraulic medium sealing chamber 1, and a display fluid exhaust valve 5 is fixedly connected to the upper surface of the display fluid sealing chamber 3.

[0034] The brake fluid exhaust valve 6 is convenient for depressurizing at the braking end after the test is completed to avoid deformation of the equipment caused by different pressures and affect the subsequent test. The display fluid exhaust valve 5 is used to relieve pressure at the display end after the test is completed. The display fluid exhaust valve 5 and the brake fluid exhaust valve 6 as a whole ensure that the oil pipe 12 being tested is taken out after the air pressure is stable.

[0035] Reference Figure 1-5 , showing that a high-precision sleeve A7 is fixedly connected to the outer surface of the liquid sealing cavity 3, and a sealing tube 8 is fixedly connected to the outer surface of the high-precision sleeve A7.

[0036] The high-precision bushing A7 ensures the sealing tube 8 to be further sealed stably.

[0037] Reference Figure 1-5 The outer surface of the sealing tube 8 is fixedly connected with a high-precision sleeve B9, and the outer surface of the high-precision sleeve B9 is fixedly connected with a clamping nut 10.

[0038] The clamping nut 10 is convenient for bearing force, thereby squeezing to cause internal pressure changes, completing equipment testing. The high-precision sleeve B9 also protects the clamping nut 10 and provides internal sealing effect of the equipment when bearing force.

[0039] Reference Figure 1-5 A tee 11 is fixedly connected to the outer surface of one end of the hydraulic medium sealing chamber 1 away from the hydraulic medium Y-type seal 2, a measured oil pipe 12 is fixedly connected to the upper surface of the tee 11, and a high-precision pressure gauge 13 is arranged on the lower surface of the tee 11.

[0040] The measured oil pipe 12 is sleeved and fixed on the top by crimping. After continuous operation, the pressure reading is obtained by the high-precision pressure gauge 13, and the tee 11 facilitates the connection of the interface.

[0041] Reference Figure 1-5 A support seat 14 is fixedly connected to the outer surface of the hydraulic medium sealing chamber 1 , a support plate 15 is welded to the lower surface of the support seat 14 , and a bottom plate 16 is welded to the lower surface of the support plate 15 .

[0042] The bottom plate 16 provides a stable contact surface for placing the equipment, and the support seat 14 and the support plate 15 fix the components of the detection equipment on the top to ensure stable operation.

[0043] Reference Figure 1-5 A rectangular screw rod 17 is disposed on the outer surface of the support seat 14 corresponding to the clamping nut 10 , and a hand wheel 18 is welded on the outer surface of the rectangular screw rod 17 .

[0044] Rotate the hand wheel 18 to make the end face of the rectangular screw 17 contact the end face of the plunger, and slowly push the plunger to the left to facilitate the measurement of changes in readings.

[0045] The implementation principle of the embodiment of the oil pipe expansion detector of the present invention is:

[0046] When in use, add red low-viscosity liquid to the high-precision measuring tube 4 and the display liquid sealing chamber 3, exhaust the air, add hydraulic medium to the hydraulic medium sealing chamber 1, the tee 11, and the measured oil pipe 12, exhaust the air, and seal the other end of the oil pipe; record the length L of the uncrimped part of the oil pipe; the end face of the rectangular screw 17 does not contact the end face of the plunger, record the pressure gauge MPa, and record the page height h0 in the high-precision measuring tube 4; rotate the handwheel 18 to make the end face of the rectangular screw 17 contact the end face of the plunger, and slowly push the plunger to the left. Record the pressure gauge reading A1MPa, record the page height h1 in the high-precision measuring tube 4; continue to rotate the handwheel 18 to make the end face of the rectangular screw 17 contact the end face of the plunger, and slowly push the plunger to the left. Record the pressure gauge reading A2MPa, record the page height h2 in the high-precision measuring tube 4; the expansion of the oil pipe L under different pressures can be obtained: by drawing the corresponding expansion curve of the oil pipe under different pressures. In this way, different tubing materials or different lengths can also be drawn.

[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An oil pipe expansion detector, comprising a hydraulic medium sealing chamber (1), characterized in that: The outer surface of the hydraulic medium sealing cavity (1) is fixedly connected to a hydraulic medium Y-type seal (2), the outer surface of the hydraulic medium Y-type seal (2) is fixedly connected to a display liquid sealing cavity (3), the upper surface of the hydraulic medium Y-type seal (2) is welded with a measuring tube support rod (19), the upper surface of the display liquid sealing cavity (3) is fixedly connected to a high-precision measuring tube (4), the high-precision measuring tube (4) is fixedly supported on the measuring tube support rod (19), and the inner surface of the display liquid sealing cavity (3) is provided with a plunger.

2. The oil pipe expansion detector according to claim 1, characterized in that: A brake fluid exhaust valve (6) is fixedly connected to the upper surface of the hydraulic medium sealing chamber (1), and a display fluid exhaust valve (5) is fixedly connected to the upper surface of the display fluid sealing chamber (3).

3. The oil pipe expansion detector according to claim 1, characterized in that: The outer surface of the display liquid sealing cavity (3) is fixedly connected to a high-precision shaft sleeve A (7), and the outer surface of the high-precision shaft sleeve A (7) is fixedly connected to a sealing tube (8).

4. The oil pipe expansion detector according to claim 1, characterized in that: A high-precision shaft sleeve B (9) is fixedly connected to the outer surface of the sealing tube (8), and a clamping nut (10) is fixedly connected to the outer surface of the high-precision shaft sleeve B (9).

5. The oil pipe expansion detector according to claim 1, characterized in that: A tee (11) is fixedly connected to the outer surface of one end of the hydraulic medium sealing chamber (1) away from the hydraulic medium Y-shaped seal (2); a measured oil pipe (12) is fixedly connected to the upper surface of the tee (11); and a high-precision pressure gauge (13) is arranged on the lower surface of the tee (11).

6. The oil pipe expansion detector according to claim 1, characterized in that: A support seat (14) is fixedly connected to the outer surface of the hydraulic medium sealing chamber (1), a support plate (15) is welded to the lower surface of the support seat (14), and a bottom plate (16) is welded to the lower surface of the support plate (15).

7. The oil pipe expansion detector according to claim 6, characterized in that: The support seat (14) is provided with a rectangular screw rod (17) on the outer surface corresponding to the clamping nut (10), and a hand wheel (18) is welded on the outer surface of the rectangular screw rod (17).

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