Hydraulic universal testing machine suitable for deep sea environment

Abstract

The utility model discloses a hydraulic universal testing machine suitable for a deep sea environment. The hydraulic universal testing machine comprises a pressure tank and a hydraulic universal machine arranged in the pressure tank, a counter-force frame is arranged at the top of the hydraulic universal machine tank body, and the oil cylinder is arranged in a hollow part of the counter-force frame; the top of the oil cylinder is fixedly connected with the top of the reaction frame, and a displacement sensor is arranged in the oil cylinder; a clamp for clamping a sample is arranged between the bottom of the counter-force frame and the bottom of the hydraulic universal machine tank body; the pressure tank is filled with seawater with preset pressure and is used for simulating a deep sea environment; the oil cylinder is connected with a servo motor oil source outside the pressure tank through two high-pressure-resistant oil pipes, and a hydraulic sensor is arranged in the servo motor oil source; and the displacement sensor is electrically connected with a control system of a built-in PID motion controller. The pressure tank is used for simulating the marine environment, the oil cylinder drives the reaction frame to move, then the clamp is driven to move until the sample is broken, the pressure of the hydraulic sensor and the displacement of the displacement sensor are recorded, and the mechanical test of the sample material in the deep sea environment is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of mechanics testing, especially relates to a hydraulic universal testing machine suitable for deep sea environment. BACKGROUND

[0002] In the deep sea environment, the mechanical testing of the existing material sample is indeed faced with the challenge of great testing difficulty and high cost.

[0003] I. Great testing difficulty

[0004] 1. Difficulty in implementation: Deep sea in-situ testing requires more preparation work and takes a long time, which is very inconvenient.

[0005] 2. Sample preparation and preservation: In the real deep sea environment, mechanical testing needs to ensure that the sample is not contaminated or damaged during preparation and preservation. This requires a high degree of professionalism and rigor in the sample preparation process, and also requires appropriate preservation conditions to maintain the original performance of the sample.

[0006] II. High cost

[0007] 1. High equipment cost: Deep sea environment mechanical testing requires highly specialized equipment, including deep sea submersibles, deep sea samplers, etc. The manufacturing cost of these equipment is high, and it needs to be regularly maintained and calibrated, which increases the cost of testing.

[0008] 2. Long testing period: Deep sea environment mechanical testing usually requires a long preparation and testing process, including sample preparation, testing equipment debugging, testing data collection and analysis, etc. These processes require time and human resources, thus increasing the cost of testing.

[0009] 3. High safety risk: Deep sea in-situ testing requires sailing to sea, involving high pressure, low temperature and other dangerous factors. If the equipment is not operated properly or there are safety hazards in the equipment itself, it may cause personal injury or equipment damage. UTILITY MODEL CONTENT

[0010] The utility model aims at overcoming the shortcomings and deficiencies of prior art, and provides a hydraulic universal testing machine suitable for deep sea environment.

[0011] The utility model aims at overcoming the shortcomings and deficiencies of prior art, and provides a hydraulic universal testing machine suitable for deep sea environment.

[0012] A hydraulic testing machine suitable for deep sea environment, including pressure tank and the hydraulic universal machine placed in pressure tank;The top of hydraulic universal machine tank body is provided with counterforce frame, and the oil cylinder is placed in the hollow part of counterforce frame;The top of oil cylinder is fixedly connected with the top of counterforce frame, and displacement sensor is arranged in the oil cylinder;The bottom of counterforce frame and the bottom of hydraulic universal machine tank body are provided with the clamp for clamping sample;

[0013] The pressure tank is filled with seawater with a preset pressure for simulating a deep sea environment;

[0014] The oil cylinder is connected with a servo motor oil source outside the pressure tank through two high-pressure resistant oil pipes, and the servo motor oil source is provided with a hydraulic sensor;

[0015] The displacement sensor is electrically connected with a control system provided with a PID motion controller.

[0016] The displacement sensor is a magnetostrictive sensor.

[0017] The displacement sensor is installed in a sealed electrical appliance bin, and the sealed electrical appliance bin is fixedly connected with the oil cylinder.

[0018] The clamp is a wedge-shaped clamp.

[0019] Compared with the prior art, the utility model has the advantages and beneficial effects that:

[0020] The utility model simulates the marine environment through the pressure tank, drives the counterforce frame to move through the oil cylinder, and then drives the clamp to move until the sample is broken, records the pressure of the hydraulic sensor and the displacement of the displacement sensor, and realizes the mechanical test of the sample material in the deep sea environment.

[0021] The utility model can carry out the research work of the marine environment on land, and greatly reduces the economic cost. DRAWINGS

[0022] Figure 1 It is a structural schematic view of a hydraulic testing machine suitable for a deep sea environment.

[0023] Among them, the meaning of the reference signs is as follows:

[0024] 1-pressure tank, 2-hydraulic universal machine, 3-counterforce frame, 4-oil cylinder, 5-magnetostrictive sensor, 6-wedge-shaped clamp, 7-sample, 8-sealed electrical appliance bin, 9-high-pressure resistant oil pipe, 10-servo motor oil source, 11-high-pressure resistant wire pipe, 12-electrical appliance wire, 13-control system provided with a PID motion controller. DETAILED DESCRIPTION

[0025] The utility model will be further described in detail in combination with embodiments and drawings, but the implementation mode of the utility model is not limited to this.

[0026] For example, Figure 1The utility model relates to a kind of hydraulic testing machine suitable for deep sea environment, including pressure tank 1, and the hydraulic universal testing machine 2 placed in pressure tank 1;Hydraulic universal testing machine 2 tank top is provided with counterforce frame 3, oil cylinder 4 is placed in the hollow portion of counterforce frame 3;The top of oil cylinder 4 is fixedly connected the top of counterforce frame 3, and displacement sensor is arranged in oil cylinder 4;Counterforce frame 3 bottom and the bottom of hydraulic universal testing machine 2 tank body between are provided with clamp 7 for clamping sample;

[0027] Pressure tank 1 is loaded with pre-set pressure seawater, for simulating deep sea environment;

[0028] Oil cylinder 4 is connected with servo motor oil source 10 placed outside pressure tank 1 by 2 high-pressure resistant oil pipes 9, and servo motor oil source 10 is built-in hydraulic sensor;

[0029] Displacement sensor is electrically connected with control system 13 built-in PID motion controller.

[0030] The displacement sensor is a magnetostrictive sensor 5.

[0031] The displacement sensor is installed in sealed electrical bin 8, and sealed electrical bin 8 is fixedly connected with oil cylinder 4.

[0032] The clamp is wedge-shaped clamp 6.

[0033] The pressure tank 1 simulating marine environment can simulate 3000m marine depth environment;The whole in hydraulic universal testing machine 2 tank is made of 304 material, to prevent seawater corrosion problem.Oil cylinder 4 piston moves upward, drives counterforce frame 3 to move, clamp moves upward along with counterforce frame 3, and sample 7 is pulled off.In this process, PID motion control card records the pressure in oil cylinder 4 and the displacement data of magnetostrictive sensor 5, so as to obtain the data of sample 7 tested in deep sea.

[0034] All equipment in deep sea pressure tank 1 is in sealed form, oil pipe adopts hard pressure-resistant oil pipe, wire pipe adopts hard pressure-resistant wire pipe, magnetostrictive sensor 5 is sealed in electronic bin, wire connected with magnetostrictive sensor 5 is placed in high-pressure resistant wire pipe 11, extends out of pressure tank 1 tank body through plate joint, and is connected to control system 13 built-in PID motion controller of computer, to transmit data.

[0035] Initial point in test process needs to be calibrated along with the pressure of pressure tank 1, when pressure tank 1 is stable at certain pressure, oil cylinder 4 drives counterforce frame 3 to move, and then it is initial point for testing.Effectively avoid the test error caused by environmental change.

[0036] The overall scheme solves the problem of deep sea test, and can carry out marine environment research work on land, reduces economic cost, and avoids a large number of deep sea environment equipment development.

[0037] The deep-sea oil cylinder 4 pushes the counterforce frame 3 to move upward, thereby driving the wedge-shaped clamp 6 to move upward. The sample 7 is initially clamped in the wedge-shaped clamp 6, and when the clamp moves upward, the clamp clamps the sample 7 through the wedge-shaped self-locking, and when the sample 7 reaches a certain force, the sample 7 is elongated and broken, and the physical performance parameters are recorded at this time.

[0038] The high-pressure-resistant oil pipe 9 ensures that the provided oil source is not affected by the sea water pressure, and ensures that the medium pressure oil cannot be leaked. The high-pressure-resistant wire pipe 11 protects the electric wire 12 from the sea water pressure, and can normally transmit data.

[0039] The above embodiment is a preferred embodiment of the utility model, but the embodiment of the utility model is not limited by the above embodiment, and any change, modification, replacement, combination, simplification, which does not deviate from the spirit and principle of the utility model, should be an equivalent replacement mode, and is contained in the protection scope of the utility model.

Claims

1. A hydraulic universal testing machine suitable for deep sea environment, characterized in that, The pressure tank and the hydraulic universal testing machine placed in the pressure tank are included; a counterforce frame is arranged on the top of the tank body of the hydraulic universal testing machine; an oil cylinder is arranged in the hollow part of the counterforce frame; the top of the oil cylinder is fixedly connected with the top of the counterforce frame; a displacement sensor is arranged in the oil cylinder; a clamp for clamping a sample is arranged between the bottom of the counterforce frame and the bottom of the tank body of the hydraulic universal testing machine; The pressure tank is filled with seawater with a preset pressure, which is used for simulating a deep sea environment; The oil cylinder is connected with a servo motor oil source arranged outside the pressure tank through two high-pressure resistant oil pipes; the servo motor oil source is internally provided with a hydraulic sensor; The displacement sensor is electrically connected with a control system internally provided with a PID motion controller.

2. The hydraulic universal testing machine suitable for deep sea environment according to claim 1, wherein, The displacement sensor is a magnetostrictive sensor.

3. The hydraulic universal testing machine suitable for deep sea environment according to claim 1, wherein, The displacement sensor is installed in a sealed electric appliance bin, and the sealed electric appliance bin is fixedly connected with the oil cylinder.

4. The hydraulic universal testing machine suitable for deep sea environment according to claim 1, wherein, The clamp is a wedge-shaped clamp.

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