Integrated hydraulic test equipment integrating external circulation and loading

Abstract

The utility model discloses integrated external circulation and loading integrated hydraulic test equipment which comprises an oil tank, a heater and a bimetallic temperature switch are arranged on the side face of the oil tank, a liquid level and liquid temperature meter and an oil pumping motor pump set are further installed on the side face of the oil tank, and the oil pumping motor pump set is communicated with a circulation valve terminal through a pipeline. An oil return filter, a circulating valve terminal, an electric control cabinet, an overflow valve terminal, a low-pressure flushing medium-pressure loading motor pump set, a high-pressure loading motor pump set, an air filter and a liquid level alarm are installed on the upper surface of the oil tank. The pressure and flushing test device can normally work in various weather environments, can realize switching of various operation conditions such as low-pressure flushing, medium-pressure loading, high-pressure loading and oil injection, can simultaneously carry out various pressure and flushing tests on multiple test equipment, integrates multiple functions, and greatly improves the detection efficiency of the pressure and flushing tests of the hydraulic equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic equipment, in particular to an integrated external circulation and loading hydraulic test equipment. Background Art

[0002] Hydraulic equipment is the carrier of hydraulic system. A complete hydraulic system consists of five parts, namely power element, actuator, control element, auxiliary element and hydraulic oil. Hydraulic equipment is the combination of all parts. Hydraulic equipment has strong transmission force, easy transmission and configuration, and is widely used in industry and civil industries. The function of hydraulic cylinder and hydraulic motor, the actuator of hydraulic system, is to convert the pressure energy of liquid into mechanical energy to obtain the required linear reciprocating motion or rotary motion.

[0003] The pressure and flushing tests of existing hydraulic equipment are conducted separately using multiple tools. This method cannot test multiple devices at the same time, resulting in low testing efficiency.

[0004] Therefore, we propose an integrated external circulation and loading hydraulic testing equipment to solve the above problems. Utility Model Content

[0005] The utility model aims to provide an integrated external circulation and loading hydraulic test equipment to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an integrated external circulation and loading integrated hydraulic test equipment, comprising: an oil tank, a heater and a bimetallic temperature switch are provided on the side of the oil tank, and the bimetallic temperature switch is electrically connected to the heater;

[0007] The bottom of the oil tank is connected to an oil drain ball valve;

[0008] A liquid level and temperature gauge and an oil pumping motor pump unit are also installed on the side of the oil tank;

[0009] The oil pumping motor pump group is connected to the circulation valve island through a pipeline, and the oil pumping motor pump group draws oil from an external oil source to fill the system oil tank;

[0010] The upper surface of the oil tank is equipped with a return oil filter, a circulation valve island, an electric control cabinet, an overflow valve island, a low-pressure flushing medium-pressure loading motor pump group, a high-pressure loading motor pump group, an air filter and a liquid level alarm;

[0011] The oil return filter is connected to the circulation valve island through a pipeline, and the circulation valve island is connected to the external test equipment;

[0012] The circulation valve island is also connected to the overflow valve island, and the overflow valve island is connected to the low-pressure flushing medium-pressure loading motor pump group and the high-pressure loading motor pump group through pipelines.

[0013] Preferably, the bimetallic temperature switch comprises a first bimetallic temperature switch and a second bimetallic temperature switch, which are respectively installed at the oil suction port and the oil return port of the oil tank.

[0014] Preferably, the circulation valve island comprises a circulation loading valve block, a high-pressure filter and a three-way ball valve 1 are installed on the upper surface of the circulation loading valve block, a three-way ball valve 2, a quick-change joint and several high-pressure ball valves are installed on the side of the circulation loading valve block, and a pressure measuring joint is also provided on the circulation loading valve block.

[0015] Preferably, the overflow valve island includes an overflow valve block, on which a plurality of electromagnetic overflow valves are installed, a pressure gauge is provided on the side of the overflow valve block, the pressure gauge is connected to the overflow valve block through a pressure gauge stop valve, and a one-way valve corresponding to the number of electromagnetic overflow valves is also installed on the side of the overflow valve block.

[0016] Preferably, the low-pressure flushing medium-pressure loading motor pump group includes a low-pressure double vane pump, and the low-pressure double vane pump is connected to the low-pressure motor through a coupling.

[0017] Preferably, the high-pressure loading motor pump group includes a high-pressure pump, and the high-pressure pump is connected to the high-pressure motor via a coupling.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] It can work normally in a variety of weather conditions, can realize the switching of various operating conditions such as low-pressure flushing, medium-pressure loading, high-pressure loading, oil injection, etc., can perform various pressure and flushing tests on multiple test equipment at the same time, integrates multiple functions into one, and greatly improves the detection efficiency of pressure and flushing tests of hydraulic equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a rear view of the utility model;

[0022] Figure 3 For this utility model Figure 1 A magnified image of point A;

[0023] Figure 4 For this utility model Figure 2 The enlarged view of point B;

[0024] Figure 5 This is a working principle diagram of the utility model.

[0025] In the figure: 1. Oil tank; 11. Oil drain ball valve; 12. Second bimetallic temperature switch; 13. Heater; 14. Liquid level and temperature gauge; 15. Liquid level alarm; 2. Return oil filter; 3. Circulation valve island; 31. High-pressure filter; 32. Three-way ball valve one; 33. High-pressure ball valve; 34. Three-way ball valve two; 35. Quick-change connector; 36. Pressure measuring connector; 37. Circulation loading valve block; 4. Electric control cabinet; 5. Pumping motor pump group; 6. Overflow valve island; 61. Overflow valve block; 62. Solenoid overflow valve; 63. Pressure gauge; 64. Pressure gauge stop valve; 7. Low-pressure flushing medium-pressure loading motor pump group; 8. High-pressure loading motor pump group; 9. First bimetallic temperature switch; 10. Air filter. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-5 , the utility model provides a technical solution: an integrated external circulation and loading integrated hydraulic test equipment, comprising: an oil tank 1, the oil tank 1 is made of carbon steel plate, and is manufactured by sandblasting, bending, welding and grinding;

[0028] A first bimetallic temperature switch 9 and a second bimetallic temperature switch 12 are respectively installed at the oil suction port and the oil return port of the oil tank 1. The first bimetallic temperature switch 9 and the second bimetallic temperature switch 12 are electrically connected to a heater 13. The first bimetallic temperature switch 9 and the second bimetallic temperature switch 12 can automatically control the heater 13 to be powered on or off according to the medium temperature near the oil suction port and the oil return port of the pump, so as to maintain the temperature in the oil tank 1.

[0029] The bottom of the oil tank 1 is connected to an oil drain ball valve 11 for draining the oil from the oil tank 1;

[0030] A liquid level and liquid temperature gauge 14 and an oil pump motor pump unit 5 are also installed on the side of the oil tank 1. The liquid level and liquid temperature gauge 14 is used to monitor the temperature and liquid level of the oil tank 1 in real time;

[0031] The oil pumping motor pump group 5 is connected to the circulation valve island 3 through a pipeline. The oil pumping motor pump group 5 is used to inject oil into the system oil tank 1 from an external oil source. Each pump outlet is equipped with a one-way valve to prevent the backflow impact of the hydraulic oil.

[0032] The upper surface of the oil tank 1 is equipped with a return oil filter 2, a circulation valve island 3, an electric control cabinet 4, an overflow valve island 6, a low-pressure flushing medium-pressure loading motor pump group 7, a high-pressure loading motor pump group 8, an air filter 10 and a liquid level alarm 15;

[0033] The oil return filter 2 and the air filter 10 prevent external pollutants from entering the oil tank 1, ensure the cleanliness of the medium in the oil tank 1, and protect the normal operation of the system to the greatest extent;

[0034] The liquid level alarm 15 has high and low level alarm functions;

[0035] The return oil filter 2 is connected to the circulation valve island 3 through a pipeline;

[0036] The circulation valve island 3 comprises a circulation loading valve block 37, a high pressure filter 31 and a three-way ball valve 1 32 are installed on the upper surface of the circulation loading valve block 37, and a three-way ball valve 2 34, a quick-change joint 35 and a plurality of high pressure ball valves 33 are installed on the side of the circulation loading valve block 37;

[0037] The circulating loading valve block 37 is also provided with a pressure measuring joint 36 for connecting a pressure measuring device to detect the pressure in the circulating loading valve block 37;

[0038] The three-way ball valve 1 32 and the three-way ball valve 2 34 are used to change the direction of the liquid flow, the high-pressure ball valve 33 is used to control the flow of the liquid during low-pressure flushing circulation and medium- and high-pressure loading to the external test equipment, and the high-pressure filter 31 is used to filter out impurities in the high-pressure loading oil circuit;

[0039] The overflow valve island 6 comprises an overflow valve block 61, on which a plurality of electromagnetic overflow valves 62 are installed, and a pressure gauge 63 is provided on the side of the overflow valve block 61, and the pressure gauge 63 is connected to the overflow valve block 61 through a pressure gauge stop valve 64;

[0040] One-way valves corresponding to the number of electromagnetic overflow valves 62 are also installed on the side of the overflow valve block 61;

[0041] The electromagnetic overflow valve 62 sets the maximum system pressure to prevent the system from overloading. The pressure gauge 63 displays the working pressure of each oil circuit in real time, which is convenient for debugging and use. The pressure gauge stop valve 64 is used to cut off the connection between the pressure gauge 63 and the system, which is convenient for replacing the pressure gauge 63.

[0042] The low-pressure flushing medium-pressure loading motor pump group 7 comprises a low-pressure double vane pump, which is connected to the low-pressure motor via a coupling;

[0043] The high-pressure loading motor pump group 8 comprises a high-pressure pump, which is connected to the high-pressure motor via a coupling;

[0044] The low-pressure flushing, medium-pressure loading motor pump group 7 and the high-pressure loading motor pump group 8 draw oil from the oil tank 1 to provide the system with hydraulic oil of different pressures.

[0045] Working principle: Low-pressure flushing circuit no-load start / emergency unloading: Start the low-pressure flushing medium-pressure loading motor pump group 7, the electromagnetic overflow valve 62 electromagnets are not energized, and the vane pump outputs hydraulic oil, which enters the circulation loading valve block 37 through the one-way valve and the three-way ball valve. At this time, it can directly flow back to the oil tank 1 through the return oil filter 2, or adjust the three-way ball valve to enter the external flushing cycle through the high-pressure ball valve 33, and finally flow back to the oil tank 1 through the return oil filter 2;

[0046] 25bar low-pressure flushing cycle: start the low-pressure flushing medium-pressure loading motor pump group 7, the electromagnetic overflow valve 62 electromagnet a is energized, the maximum overflow pressure is 50bar, the vane pump outputs hydraulic oil, and then enters the circulation loading valve block 37 through the one-way valve and the three-way ball valve. Adjust the three-way ball valve to enter the external flushing cycle through the high-pressure ball valve 33, and finally flow back to the oil tank 1 through the return oil filter 2;

[0047] 100bar medium-pressure loading: Start the low-pressure flushing medium-pressure loading motor pump group 7, the electromagnetic overflow valve 62 electromagnet b is energized, the maximum overflow pressure is 100bar, the vane pump outputs hydraulic oil, and then enters the circulation loading valve block 37 through the one-way valve and the three-way ball valve. Adjust the three-way ball valve to perform a medium-pressure loading test on the external equipment through the high-pressure ball valve 33, and finally flow back to the oil tank 1 through the return oil filter 2;

[0048] 250bar high-pressure loading: Start the high-pressure loading motor pump group 8, the electromagnetic overflow valve 62 electromagnet c is energized, the maximum overflow pressure is 250bar, the high-pressure pump outputs hydraulic oil, and then enters the circulation loading valve block 37 through the one-way valve and the three-way ball valve. Adjust the three-way ball valve to perform a high-pressure loading test on the external equipment through the high-pressure filter 31 and the quick-change joint 35, and finally flow back to the oil tank 1 through the return oil filter 2;

[0049] The oil pump works: the oil pump motor pump group 5 is started, the electromagnetic relief valve 62 electromagnets are not energized, the oil pump sucks hydraulic oil from the external oil source, and the oil is filtered by the return oil filter 2 and then injected into the oil tank 1;

[0050] The oil tank 1 maintains the temperature: when the oil temperature near the oil suction port is lower than 25°C, the heater 13 works, and when it is higher than 45°C, the heater 13 stops working; when the oil temperature near the oil return port is lower than 35°C, the heater 13 works, and when it is higher than 50°C, the heater 13 stops working;

[0051] Liquid level alarm of oil tank 1: when the oil level is 150mm from the top of oil tank 1, the liquid level alarm 15 will give a high level alarm; when the oil level is 650mm from the top of oil tank 1, the liquid level alarm 15 will give a low level alarm. In addition, when the high pressure filter 31 and the return oil filter 2 are blocked, the liquid level alarm 15 will also give an alarm.

[0052] The equipment can automatically start and stop the heater 13 according to temperature feedback to maintain the system temperature. The equipment can work normally in various weather environments, and can switch between various operating conditions such as low-pressure flushing, medium-pressure loading, high-pressure loading, and oil injection. It can perform various pressure and flushing tests on multiple test equipment at the same time.

[0053] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated external circulation and loading hydraulic test equipment, comprising: The oil tank (1) is characterized in that a heater (13) and a bimetallic temperature switch are provided on the side of the oil tank (1), and the bimetallic temperature switch is electrically connected to the heater (13); The bottom of the oil tank (1) is connected to an oil drain ball valve (11); A liquid level and temperature gauge (14) and an oil pumping motor unit (5) are also installed on the side of the oil tank (1); The oil pumping motor pump group (5) is connected to the circulation valve island (3) through a pipeline, and the oil pumping motor pump group (5) draws oil from an external oil source to fill the system oil tank (1); The upper surface of the oil tank (1) is equipped with an oil return filter (2), a circulation valve island (3), an electric control cabinet (4), an overflow valve island (6), a low-pressure flushing medium-pressure loading motor pump group (7), a high-pressure loading motor pump group (8), an air filter (10) and a liquid level alarm (15); The oil return filter (2) is connected to the circulation valve island (3) via a pipeline, and the circulation valve island (3) is connected to an external test device; The circulation valve island (3) is also connected to the overflow valve island (6), and the overflow valve island (6) is connected to the low-pressure flushing medium-pressure loading motor pump group (7) and the high-pressure loading motor pump group (8) through pipelines.

2. The integrated external circulation and loading hydraulic testing equipment according to claim 1, characterized in that: The bimetallic temperature switch comprises a first bimetallic temperature switch (9) and a second bimetallic temperature switch (12), which are respectively mounted at the oil suction port and the oil return port of the oil tank (1).

3. The integrated external circulation and loading hydraulic testing equipment according to claim 1, characterized in that: The circulation valve island (3) comprises a circulation loading valve block (37), a high-pressure filter (31) and a three-way ball valve (32) being mounted on the upper surface of the circulation loading valve block (37), a three-way ball valve (34), a quick-change joint (35) and a plurality of high-pressure ball valves (33) being mounted on the side of the circulation loading valve block (37), and a pressure measuring joint (36) being further provided on the circulation loading valve block (37).

4. The integrated external circulation and loading hydraulic testing equipment according to claim 1, characterized in that: The overflow valve island (6) comprises an overflow valve block (61), on which a plurality of electromagnetic overflow valves (62) are mounted, a pressure gauge (63) is provided on the side of the overflow valve block (61), the pressure gauge (63) is connected to the overflow valve block (61) via a pressure gauge stop valve (64), and one-way valves corresponding to the number of electromagnetic overflow valves (62) are also mounted on the side of the overflow valve block (61).

5. The integrated external circulation and loading hydraulic testing equipment according to claim 1, characterized in that: The low-pressure flushing medium-pressure loading motor pump group (7) comprises a low-pressure double vane pump, and the low-pressure double vane pump is connected to the low-pressure motor via a coupling.

6. The integrated external circulation and loading hydraulic testing equipment according to claim 1, characterized in that: The high-pressure loading motor pump group (8) comprises a high-pressure pump, and the high-pressure pump is connected to the high-pressure motor via a coupling.

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