Universal hydraulic product pressure resistance test equipment

Abstract

The invention belongs to the technical field of tool parts, and particularly relates to universal hydraulic product pressure resistance test equipment which comprises an operation cabinet and a control cabinet installed on the table top of the operation cabinet. A manual pressure regulating knob, an oil inlet / return joint and a safety cover are mounted on the tabletop of the operation cabinet; a hydraulic system and a cooling system are arranged in the operation cabinet; the hydraulic system comprises an oil tank, a radial plunger pump, an energy accumulator, an oil return filter, a proportional overflow valve, a safety valve and a hydraulic pipeline; the cooling system comprises a plate cooler, a hydraulic port of the plate cooler is connected with the oil tank, and a cooling water port is respectively connected with a cooling water inlet and a cooling water outlet on the operation cabinet; an electrical control element is installed in the control cabinet, and buttons, instruments and indicator lamps are arranged on a panel of the control cabinet. The pressure-resistant performance of common hydraulic products can be tested by replacing the hose connector, and the device is simple and reliable in structure, wide in pressure adjusting range and wide in applicable product type.

Description

Technical Field

[0001] The invention belongs to the technical field of tooling components, and in particular relates to a universal pressure test equipment for hydraulic products. Background Art

[0002] Hydraulic parts and accessories of modern aviation equipment are required to undergo pressure tests (common pressure is 40MPa ~ 45MPa) before leaving the factory to verify the structural strength and sealing performance of the products under high pressure. Due to the large pressure load and high frequency of use of the test equipment, higher requirements are placed on the reliability and safety of the power source, control valves and pipelines of the hydraulic system of the test equipment. It is necessary to design a universal equipment for pressure test of hydraulic products to meet the pressure performance test requirements of various types of products. Summary of the invention

[0003] Aiming at the characteristics of large pressure load and high frequency of use in pressure resistance performance test, the present invention provides a universal pressure resistance test equipment to meet the pressure resistance performance test requirements of hydraulic products such as hydraulic steering gears and solenoid valves.

[0004] The technical solution of the present invention is: a universal hydraulic product pressure test equipment, comprising an operating cabinet, on the top table of which a control cabinet is installed;

[0005] The operating cabinet is provided with a hydraulic system and a cooling system, wherein:

[0006] The hydraulic system includes an oil tank, a radial piston pump, a manual pressure regulating knob, an oil inlet joint, an oil return joint, a proportional relief valve, a safety valve, an accumulator, and an oil return filter; the radial piston pump is installed inside the oil tank and connected to the motor through a coupling; the proportional relief valve is connected in parallel with the product to be tested and is connected to the manual pressure regulating knob on the control cabinet; the safety valve is also connected in parallel with the product to be tested, and its two ends are respectively connected to the outlet of the radial piston pump and the oil return port of the oil tank; the accumulator is directly connected to the outlet of the radial piston pump; the oil return filter is installed on the cover of the oil tank and is connected to the oil tank through a pipeline; the oil inlet joint and the oil return joint are respectively connected to the oil tank through pipelines; a high-pressure ball valve is provided on the oil inlet joint, and the oil inlet joint and the oil return joint are respectively connected and fastened to the oil inlet and return nozzles of the product to be tested through hydraulic pipe joints;

[0007] The cooling system comprises a cooling water inlet, a cooling water outlet and a plate cooler. The hydraulic port of the plate cooler is connected to the oil tank, and its cooling water port is respectively connected to the cooling water inlet and the cooling water outlet through pipelines.

[0008] Preferably, electrical control elements are installed in the control cabinet, and the electrical control elements include an air circuit breaker and a motor drive module. An external three-phase asynchronous AC power supply is introduced into the device through a cable and the air circuit breaker, and the speed of the motor is driven and controlled by the motor drive module.

[0009] Preferably, the control cabinet panel is provided with an emergency stop button, a temperature display instrument, a high oil temperature alarm indicator light, a pressure gauge, a filter element clogging alarm indicator light, a motor start button and a motor stop button.

[0010] Preferably, a safety cover is installed on the table top of the control cabinet.

[0011] Preferably, a temperature sensor is provided inside the oil tank.

[0012] Preferably, a liquid level gauge is installed on the outer wall of the oil tank.

[0013] Preferably, a bell-shaped cover is provided outside the coupling.

[0014] Preferably, a Fuma wheel is installed at the lower end of the operating cabinet.

[0015] After connecting the product to be tested to the equipment, the system pressure can be set by adjusting the knob to effectively meet the pressure conditions of the pressure test of different products. The system pressure and oil temperature are displayed in real time, and an alarm is issued when the hydraulic system temperature is abnormal or the oil circuit is blocked.

[0016] The invention has the beneficial effects of providing a universal hydraulic product pressure resistance test equipment, which can realize the pressure resistance performance test of general hydraulic products by replacing the hose joint, has a simple and reliable equipment structure, a wide pressure adjustment range, and is applicable to a wide range of product types. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the planar structure of the test equipment of the present invention.

[0019] The numbers in the figure are: 1-operating cabinet, 2-oil tank, 3-radial piston pump, 4-coupling, 5-bell jar, 6-temperature sensor, 7-motor, 8-safety cover, 9-high-pressure ball valve, 10-emergency stop button, 11-control cabinet, 12-temperature display instrument, 13-high oil temperature alarm indicator, 14-pressure gauge, 15-filter element clogging alarm indicator, 16-motor start button, 17-motor stop button, 18-manual pressure regulating knob, 19-oil inlet connector, 20-oil return connector, 21-proportional relief valve, 22-safety valve, 23-accumulator, 24-cooling water inlet, 25-return oil filter, 26-liquid level gauge, 27-cooling water outlet, 28-plate cooler, 29-Foma wheel. DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it is necessary to understand that the terms "length", "width", "inside", "outside", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The purpose of the present invention is to provide a universal hydraulic product pressure test equipment to solve the problems existing in the prior art.

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0025] Example

[0026] like Figure 1 As shown, a universal hydraulic product pressure test equipment comprises an operating cabinet 1, and a control cabinet 11 is installed on the top table of the operating cabinet 1;

[0027] The operating cabinet 1 is equipped with a hydraulic system and a cooling system, among which:

[0028] The hydraulic system includes an oil tank 2, a radial piston pump 3, a manual pressure regulating knob 18, an oil inlet joint 19, an oil return joint 20, a proportional relief valve 21, a safety valve 22, an accumulator 23, and an oil return filter 25; the radial piston pump 3 is installed inside the oil tank 2 and is connected to the motor 7 through a coupling 4; the proportional relief valve 21 is connected in parallel with the product to be tested and is connected to the manual pressure regulating knob 18 on the control cabinet 11; the safety valve 22 is also connected in parallel with the product to be tested, and its two ends are respectively connected to the radial piston The outlet of the pump 3 and the oil return port of the oil tank 2 are used for overpressure protection of the hydraulic system; the accumulator 23 is directly connected to the outlet of the radial piston pump 3; the return oil filter 25 is installed on the port cover of the oil tank 2 and is connected to the oil tank 2 through a pipeline; the oil inlet joint 19 and the oil return joint 20 are respectively connected to the oil tank 2 through pipelines; the oil inlet joint 19 is provided with a high-pressure ball valve 9, and the oil inlet joint 19 and the oil return joint 20 are respectively connected to the oil inlet and return pipe nozzles of the product to be tested through hydraulic pipe joints and tightened;

[0029] After the hydraulic oil in the oil tank 2 is pressurized by the radial piston pump 3, it flows through the product to be tested through the oil inlet joint 19 and the high-pressure ball valve 9, and flows back to the oil tank 2 through the return oil joint 20 and the return oil filter 25; the pressure of the proportional relief valve 21 is set by rotating the manual pressure regulating knob 18, thereby adjusting the pressure of the hydraulic system; the return oil filter 25 installed on the cover of the oil tank 2 has a filter element blockage sensing function, and when the filter element is blocked, a signal is sent, and the filter element blockage alarm indicator 15 on the operating cabinet will light up; the accumulator 23 is directly connected to the outlet of the radial piston pump 3 to eliminate system pressure pulsation and maintain stable equipment pressure.

[0030] The cooling system includes a cooling water inlet 24, a cooling water outlet 27, and a plate cooler 28. The hydraulic port of the plate cooler 28 is connected to the oil tank 2, and its cooling water port is connected to the cooling water inlet 24 and the cooling water outlet 27 through pipelines.

[0031] The cooling water inlet 24 and the cooling water outlet 27 are connected to the external cooling pipeline to continuously provide cooling water source for the equipment; the cooling water of the plate cooler 28 exchanges heat with the high-temperature hydraulic oil in the oil tank, so that the hydraulic oil of the equipment is cooled to a specified temperature.

[0032] As an implementation mode, electrical control elements are installed in the control cabinet 11, and the electrical control elements include an air circuit breaker and a motor drive module. An external three-phase asynchronous AC power supply is introduced into the device through cables and air circuit breakers, and the speed of the motor 7 is driven and controlled by the motor drive module.

[0033] As an implementation mode, an emergency stop button 10, a temperature display instrument 12, a high oil temperature alarm indicator light 13, a pressure gauge 14, a filter blockage alarm indicator light 15, a motor start button 16 and a motor stop button 17 are provided on the panel of the control cabinet 11. The buttons on the panel of the control cabinet 11 control the start and stop of the motor 7.

[0034] As an implementation mode, a safety cover 8 is installed on the table of the control cabinet 11, and the safety cover 8 is used for safety protection of test personnel.

[0035] As an implementation mode, a temperature sensor 6 is provided inside the oil tank 2. The temperature sensor 6 located inside the oil tank 2 can sense the oil temperature and transmit an electrical signal to the temperature display instrument 12 in real time.

[0036] As an implementation mode, a liquid level meter 26 is installed on the outer wall of the oil tank 2 for displaying the remaining oil level in the oil tank.

[0037] As an implementation mode, a bell-shaped housing 5 is provided outside the coupling 4 .

[0038] As an implementation mode, a Foma wheel 29 is installed at the lower end of the operating cabinet 1 .

[0039] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A universal hydraulic product pressure test equipment, characterized by: It comprises an operating cabinet (1), wherein a control cabinet (11) is installed on the top table of the operating cabinet (1); The operating cabinet (1) is provided with a hydraulic system and a cooling system, wherein: The hydraulic system comprises an oil tank (2), a radial piston pump (3), a manual pressure regulating knob (18), an oil inlet joint (19), an oil return joint (20), a proportional relief valve (21), a safety valve (22), an accumulator (23), and an oil return filter (25); the radial piston pump (3) is installed inside the oil tank (2) and is connected to the motor (7) via a coupling (4); the proportional relief valve (21) is connected in parallel with the product to be tested and is connected to the manual pressure regulating knob (18) on the control cabinet (11); the safety valve (22) is also connected in parallel with the product to be tested and its two ends are respectively connected to the The outlet of the radial piston pump (3) and the oil return port of the oil tank (2); the accumulator (23) is directly connected to the outlet of the radial piston pump (3); the return oil filter (25) is installed on the cover of the oil tank (2) and is connected to the oil tank (2) through a pipeline; the oil inlet joint (19) and the oil return joint (20) are respectively connected to the oil tank (2) through pipelines; the oil inlet joint (19) is provided with a high-pressure ball valve (9), and the oil inlet joint (19) and the oil return joint (20) are respectively connected to the oil inlet and return nozzles of the product to be tested through hydraulic pipe joints and tightened; The cooling system comprises a cooling water inlet (24), a cooling water outlet (27), and a plate cooler (28); a hydraulic port of the plate cooler (28) is connected to the oil tank (2), and a cooling water port thereof is respectively connected to the cooling water inlet (24) and the cooling water outlet (27) via pipelines.

2. The universal hydraulic product pressure test equipment according to claim 1 is characterized in that: The control cabinet (11) is equipped with an electrical control element, which includes an air circuit breaker and a motor drive module. An external three-phase asynchronous AC power supply is introduced into the device through a cable and the air circuit breaker, and the motor drive module drives and controls the rotation speed of the motor (7).

3. The universal hydraulic product pressure test equipment according to claim 1 is characterized in that: The control cabinet (11) is provided with an emergency stop button (10), a temperature display instrument (12), a high oil temperature alarm indicator (13), a pressure gauge (14), a filter element blockage alarm indicator (15), a motor start button (16) and a motor stop button (17) on the panel.

4. The universal hydraulic product pressure test equipment according to claim 1 is characterized in that: A safety cover (8) is installed on the table top of the control cabinet (11).

5. The universal hydraulic product pressure test equipment according to claim 1 is characterized in that: A temperature sensor (6) is provided inside the oil tank (2).

6. The universal hydraulic product pressure test equipment according to claim 1 is characterized by: A liquid level meter (26) is installed on the outer wall of the oil tank (2).

7. The universal hydraulic product pressure test equipment according to claim 1 is characterized by: A bell-shaped cover (5) is arranged outside the coupling (4).

8. The universal hydraulic product pressure test equipment according to claim 1 is characterized by: A Fuma wheel (29) is installed at the lower end of the operating cabinet (1).

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