Solenoid valve service life performance detection device

Abstract

The invention relates to an electromagnetic valve service life performance detection device. Comprising a double-piston air pressure control mechanism, an air source triple piece, an electromagnetic detection mechanism, a cavity, a movable guide rail module, an air tightness detection mechanism, a sealing joint fixed on the electromagnetic detection mechanism and a combustion chamber which is fixed above the main body frame and generates high-temperature gas through electric heating, which are sequentially arranged in the main body frame. According to the invention, the design of each component is ingenious, automatic adsorption butt joint of the air inlet and outlet hole and the power supply interface of the solenoid valve is fully realized, high-temperature and high-pressure working conditions of the solenoid valve can be simulated, gas can be rapidly and circularly utilized, the detection process is accelerated, the working difficulty / intensity of detection personnel is reduced, and a set of feasible scheme is provided for life index detection of the solenoid valve.

Description

Technical Field

[0001] The present invention relates to a solenoid valve life performance detection device, in particular to a solenoid valve detection device that can simulate a high temperature and high pressure environment, quantitatively control the output gas pressure by controlling the piston stroke, use a one-way valve to control the gas flow direction, and realize gas reuse. The device can quickly perform life detection, air tightness detection and electromagnetic detection functions, and belongs to the technical field of solenoid valve performance detection. Background Art

[0002] The solenoid valve is a key electromagnetic control component in the vehicle actuator. In the control system, it mainly adjusts the flow direction, flow rate, flow rate and other parameters of media such as oil, water and gas, and cooperates with different circuits and mechanisms to effectively control the vehicle, while ensuring control accuracy and flexibility. Its performance directly affects the performance and normal operation of the vehicle. Industrial production has very high quality requirements for solenoid valves, especially their service life and electromagnetic performance. Traditional solenoid valve detection mainly relies on manual or single-function detection equipment, which has high time and labor costs; and in each test process, the solenoid valve may have different degrees of displacement offset, resulting in the detection equipment requiring different degrees of position calibration before each detection process, which will greatly reduce the detection efficiency and detection accuracy.

[0003] On the basis of this background, the applicant proposed three innovations. First, a magnetic fixture is used to ensure that the initial position of the solenoid valve is the same in each test process, and it can be accurately located in the working position, thereby improving the accuracy of the device automation. Second, multiple workstations are configured for the solenoid valve. When the solenoid valve completes a test, it can automatically move to the next workstation using the magnetic device, and use the spare time of inflation and vacuuming during each detection process to improve the detection efficiency. Third, in order to make better use of the heat surplus, a circulation structure consisting of five one-way valves is designed, which can reheat and pressurize the last test gas for the detection of the next station solenoid valve, thereby reducing heat loss and saving energy. Fourth, a dual-piston air pressure control mechanism is used to take part of the gas from the high-temperature and high-pressure gas source for detection, and the output gas volume and air pressure are controlled by controlling the piston stroke, so that the detection parameters are controllable while reducing the time of gas heating during the detection process and improving the detection efficiency. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention proposes an efficient and accurate solenoid valve life performance detection device, which can simultaneously realize air tightness detection and electromagnetic detection, and can reliably form a complete system with a specific solenoid valve.

[0005] A solenoid valve life performance detection device includes a double-piston air pressure control mechanism, an air source triplet, an electromagnetic detection mechanism, a cavity, a movable guide rail module, an airtightness detection mechanism, a sealing joint fixed on the electromagnetic detection mechanism, and a combustion chamber fixed above the main frame and generating high-temperature gas through electric heating.

[0006] The solenoid valve to be tested has an air inlet and an air outlet, and passes through 8 cavities on the moving guide rail in sequence. Each cavity includes a left chamber and a right chamber. Each cavity is connected to the air inlet or outlet of the solenoid valve through a magnetic cover; the combustion chamber and the double-piston air pressure control mechanism are used to create the high-temperature and high-pressure environment required for the solenoid valve test; the vacuum pump is connected to the cavity through a pipeline, and the high-temperature and high-pressure gas passing through the solenoid valve is introduced into the cavity of the next detection position, and at the same time, the interior of the chamber containing the used gas is converted into a vacuum to ensure a stable vacuum environment in the cavity. The gas is recycled, saving energy, and realizing rapid detection of the solenoid valve.

[0007] A rotating table is designed between the left and right chambers of the cavity, so that the direction of the air inlet / outlet of the solenoid valve can be turned. At the same time, a multi-point positioning mechanism is provided, which works together with the stepper motor and the positioning sensor to ensure the precise movement and positioning of the fixture between different workstations and realize the workstation change.

[0008] The high-temperature gas is connected through a double-piston air pressure control mechanism, an air source triplet and an air tightness detection mechanism to form an air intake circuit. The air intake circuit is connected to the air inlet of the solenoid valve to be detected through a sealing joint. The air tightness sensor records and compares the gas volume in the front and rear positions. The electromagnetic detection mechanism collects the electromagnetic performance of the valve body when it is energized through an electromagnetic probe; the movable guide module fixes the solenoid valve to be detected through an electromagnet to realize the movement of the solenoid valve to be detected in different detection stations; the other end of the solenoid valve to be tested is connected to the vacuum pump through a sealing joint, and the vacuum pump is connected to the cavity through an air pipe, and a vacuum environment is created in the cavity to form an air outlet circuit; the extracted gas is heated and used to detect the solenoid valve at the next station, thereby realizing the cyclic detection of the solenoid valve.

[0009] The dual-piston air pressure control mechanism includes a first stepper motor, a piston cylinder, two valve blocks, five one-way valves, an air circuit connection block, a valve body end cover, a cam, a spring, a piston, a piston end cover, a piston cylinder body, a housing and a guide shaft. The dual pistons are driven by a stepper motor to operate in the piston cylinder body. By controlling the piston stroke, the dual pistons can control the output gas flow and air pressure. The output gas flow direction is controlled by the valve block and the one-way valve. The air circuit connection block connects various air circuits. The one-way valve is controlled by a controller to alternately conduct one-way conduction, so that the gas flowing out of the solenoid valve flows into the combustion chamber again in the order of the one-way valves, and part of the gas is reused.

[0010] The double piston is composed of two groups of piston end covers, a piston cylinder, a piston, a spring, a cam, and a double cam guide shaft. The piston rod is in contact with the cam. Under the rotation drive of the double cam guide shaft, the piston moves forward for a forward stroke, and under the action of the spring, the piston moves backward for a backward stroke. The cam cooperates with the spring to realize the reciprocating motion of the piston, pushing a certain amount of gas into the solenoid valve.

[0011] The airtightness detection mechanism includes a cylinder base, a cylinder, a magnetic cover, inlet and outlet joints, an airtightness detection sensor, a right magnetic cover, a power interface and a fixed plate. The cylinder drives the fixed plate to dock with the solenoid valve, so that the inlet and outlet joints, the power interface and the solenoid valve interface are accurately docked. The magnetic cover fits the outer contour of the solenoid valve to achieve sealing and fixation. The airtightness detection sensor can monitor the airtightness parameters in real time, analyze the airtightness data through the control unit, and analyze the sealing performance of the solenoid valve.

[0012] The sealing joint is fixed in the magnetic cover and is made of rubber material. It is connected to the airtight sensor through a hose. The internal structure is inserted into the inlet and outlet holes of the solenoid valve. The internal tube body is a multi-ring rubber pattern with increasing radius. During the connection process, a multi-layer seal is formed with the inner wall of the inlet and outlet tubes, and further sealing is achieved as the cylinder is pushed forward. An annular rubber sleeve is nested outside to contact the outer wall of the inlet and outlet to achieve secondary sealing.

[0013] The movable guide rail module includes a second stepper motor, a guide rail, a base, an electromagnet and a rotating table. The rotating table is fixed on the movable guide rail, and the base is installed on the rotating table. When the second stepper motor is started, it can drive the base to move precisely along the guide rail. The rotating table is connected to the control power supply and can issue an open / close command to the solenoid valve to achieve dual detection of opening and closing the valve under high temperature and high pressure conditions. The fixed fixture module is equipped with an electromagnet, which is used to tightly adsorb the solenoid valve to ensure that the solenoid valve remains stable during the detection process, thereby improving the accuracy and reliability of the detection.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention integrates multiple functional modules, such as air source control, gas circulation, magnetic fixation and other modules, so that the air tightness detection and life detection of the solenoid valve can be completed quickly and accurately. The different modules work together to reduce the complexity of the mechanical structure, the volume and weight of the equipment while ensuring the detection accuracy and stability. The compactness and lightweight characteristics of the design make the device have high application potential in many fields and easy to promote and apply.

[0016] The present invention adopts a specially designed electromagnetic connector, which can realize the rapid and reliable connection between the electromagnetic valve and the external gas source and vacuum source. The electromagnetic connector can not only withstand high temperature and high pressure environment, but also can be quickly disconnected and connected when needed, which greatly improves the efficiency of electromagnetic valve detection, avoids the trouble of frequent adjustment of pipes or connectors in traditional connection methods, shortens the detection cycle, and improves the convenience of the test process.

[0017] In the process of electromagnetic valve detection, the input gas volume and air pressure are important factors affecting the detection results. To this end, the present invention designs an efficient gas source control device, which adjusts the gas volume and air pressure entering the electromagnetic valve by accurately controlling the stroke of the piston. This adjustment method is simple and efficient, and can accurately simulate the performance of the electromagnetic valve under different working pressures, ensuring that the test environment is consistent with the working conditions in actual applications.

[0018] The present invention aims at the time requirement in the electromagnetic valve detection process. The present invention independently controls the movement of the pistons on the left and right sides, so that the gas source can provide high-temperature and high-pressure gas while maintaining a stable gas pressure supply. This design not only improves the efficiency of gas supply, but also effectively reduces gas consumption and avoids unnecessary waste. At the same time, by optimizing the piston control, the continuous detection of the electromagnetic valve is realized, which greatly shortens the test time and improves the test efficiency.

[0019] In the detection process of the solenoid valve of the present invention, the continuous supply of high-temperature and high-pressure gas is the key. In order to improve energy utilization efficiency and reduce heat loss, the present invention designs an efficient gas circulation device. The device allows the gas to be circulated during the detection process through a closed loop. This not only reduces the consumption of external energy, but also ensures that the temperature and pressure of the gas remain stable during the detection process, thereby improving the accuracy and reliability of the solenoid valve detection.

[0020] In the detection process of the solenoid valve of the present invention, the fixing and loosening operations of the solenoid valve are crucial to the accuracy of the detection results. In order to simplify the operation, the present invention designs an electromagnetic suction base, which can quickly fix and loosen the solenoid valve by installing an electromagnet magnetic suction device under the guide rail platform. By accurately controlling the suction force of the electromagnet, the solenoid valve can be quickly fixed in place during the detection process, or easily loosened after the detection is completed, avoiding the cumbersome steps of traditional manual fixing, thereby improving the overall detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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 or the description of the prior art 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 work.

[0022] Figure 1 This is the overall structure diagram of the electromagnetic valve life performance detection device of the present invention;

[0023] Figure 2 It is a structural diagram of a double-piston air pressure control mechanism in the electromagnetic valve life performance detection device of the present invention;

[0024] Figure 3 It is a structural diagram of the air tightness detection mechanism in the electromagnetic valve life performance detection device of the present invention;

[0025] Figure 4 It is a structural diagram of a movable guide rail module in the electromagnetic valve life performance detection device of the present invention;

[0026] Figure 5 It is a schematic diagram of the electromagnetic valve detection system of the present invention;

[0027] Figure 6 It is a schematic diagram of the solenoid valve cycle detection process of the present invention.

[0028] In the figure, 1.1-main frame; 1.2-double piston air pressure control mechanism; 1.3-air source triplex; 1.4-vacuum pump; 1.5-cavity; 1.6-combustion chamber; 1.7-electromagnetic detection mechanism; 1.8-sealing joint; 1.9-power connector; 1.10-air tightness detection mechanism; 1.11-moving guide rail; 2.1-first stepper motor; 2.2-piston cylinder; 2.3-valve block; 2.4-check valve; 2.5-air path connection block; 2.6-valve body end cover; 2.7-convex Wheel; 2.8-spring; 2.9-piston; 2.10-piston end cover; 2.11-piston cylinder; 2.12-housing; 2.13-double cam guide shaft; 3.1-cylinder base; 3.2-cylinder; 3.3-magnetic cover; 3.4-inlet and outlet joints; 3.5-air tightness detection sensor; 3.6-right magnetic cover; 3.7-power interface; 3.8-fixed plate; 4.1-second stepper motor; 4.2-guide rail; 4.3-base; 4.4-electromagnet; 4.5-rotating table. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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] like Figure 1 As shown, a solenoid valve life performance detection device includes a double piston air pressure control mechanism 1.2, an air source triplet 1.3, a vacuum pump electromagnetic detection mechanism 1.4, a cavity 1.5, a movable guide rail 1.11, a sealing joint 1.8 and a power supply joint 1.9 fixed on the electromagnetic detection mechanism 1.7, and a combustion chamber 1.6 fixed on the main frame 1.1. The combustion chamber 1.6 generates high-temperature gas through electric heating, and is connected to the air tightness detection mechanism 1.10 through the double piston air pressure control mechanism 1.2, the air source triplet 1.3 to form an intake circuit, which is connected to the air inlet of the solenoid valve through the sealing joint 1.8, and uses the air tightness sensor to record and compare the gas volume in the front and rear positions. The electromagnetic detection mechanism 1.7 collects the electromagnetic performance when the valve body is powered on by the electromagnetic probe sensor. The solenoid valve is fixed on the movable guide rail 1.11 through an electromagnet and can move on different detection positions. The other end of the solenoid valve is connected to the vacuum pump 1.4 through a sealing joint 1.8. The vacuum pump 1.4 creates a vacuum environment in the manufacturing cavity 1.5 through an air pipe connection to form an air outlet circuit to achieve cyclic detection of the solenoid valve.

[0031] like Figure 2 As shown, the dual-piston air pressure control mechanism includes a first stepper motor 2.1, a piston cylinder 2.2, a valve block 2.3, a one-way valve 2.4, an air path connection block 2.5, a valve body end cover 2.6, a cam 2.7, a spring 2.8, a piston 2.9, a piston end cover 2.10, a piston cylinder 2.11, a housing 2.12 and a dual cam guide shaft 2.13. The dual-piston air pressure control mechanism 2.1 drives the piston 2.9 to operate in the piston cylinder 2.11 through a stepper motor to adjust the air pressure. The output air flow is controlled by the valve block 2.3 and the one-way valve 2.4 to ensure the correct flow of the air flow in the system. The piston end cover 2.10 is connected to the valve body end cover 2.6 by threads, and the air path connection block 2.5 is used to connect each air path and ensure the air tightness of the system. Through the cooperation of the cam 2.7, the spring 2.8 and the dual cam guide shaft 2.13, the piston cylinder 2.2 is switched under different pressure states to simulate the response of the solenoid valve in actual work.

[0032] like Figure 3As shown, the airtight detection module includes a cylinder base 3.1, a cylinder 3.2, a magnetic cover 3.3, an inlet and outlet joint 3.4, an airtight detection sensor 3.5, a right magnetic cover 3.6, a power interface 3.7, and a fixed plate 3.8. The cylinder 3.2 is installed on the cylinder base 3.1. The cylinder 3.2 drives the fixed plate 3.8 to dock with the solenoid valve, so that the inlet and outlet joints 3.4 and the power interface 3.7 are accurately docked with the solenoid valve interface. The magnetic cover 3.3 includes a left magnetic cover and a right magnetic cover 3.6. The magnetic cover 3.3 fits the outer contour of the solenoid valve to play a sealing and fixing role. The airtight detection sensor 3.5 can monitor the airtightness in real time, and analyze the airtightness data through the control unit to verify the sealing performance of the solenoid valve in a closed environment.

[0033] like Figure 4 As shown, the mobile guide rail module includes a second stepper motor 4.1, a guide rail 4.2, a base 4.3, an electromagnet 4.4, and a rotating platform 4.5. The rotating platform 4.5 is fixed to the mobile guide rail, the base 4.3 is mounted on the rotating platform 4.5 and rotated, and the second stepper motor 4.1 works to drive the rotating platform 4.5 to move on the guide rail 4.2. The fixed fixture module is equipped with an electromagnet 4.4, which is used to firmly adsorb the solenoid valve and ensure that it will not move during the detection process, thereby improving the stability of the detection.

[0034] like Figure 5 As shown, the solenoid valve to be tested has an air inlet and an air outlet, and passes through cavities a and e, b and f, c and g, d and h on the moving guide rail in sequence. The cavities are arranged in sequence from front to back. The left chambers of cavities a and c, and the right chambers of cavities b and d are connected to the corresponding combustion chambers. The right chambers of cavities a and c, and the left chambers of cavities b and d are connected to the corresponding vacuum pumps. Each cavity includes a left chamber and a right chamber, and each cavity is connected to the air inlet or outlet of the solenoid valve through a magnetic suction cover. The combustion chamber and the double-piston air pressure control mechanism are used to create the high-temperature and high-pressure environment required for the solenoid valve test; the vacuum pump is connected to the cavity through a pipeline, and the high-temperature and high-pressure gas passing through the solenoid valve is introduced into the cavity of the next detection position, and the interior of the chamber filled with the used gas is converted into a vacuum, ensuring a stable vacuum environment in the cavity, recycling the gas, saving energy, and realizing rapid detection of the solenoid valve. A rotating table is designed between the left and right chambers of cavities a, b, c, d, e, f, g, and h, so that the direction of the air inlet / outlet of the solenoid valve can be turned. At the same time, a multi-point positioning mechanism is provided, which works together with a stepper motor and a positioning sensor to ensure the precise movement and positioning of the fixture between different workstations and realize workstation conversion.

[0035] like Figure 6As shown, the vacuum pump extracts the initial gas inside cavity 1 and cavity 2; cavity 1 and 2 are alternately served by cavities a, b, c, d, e, f, and h; the combustion chamber generates high-temperature gas through electric heating, which flows through the double-piston cylinder and one-way one-way valve 1. The gas flows through the front airtight sensor, leads to the sample solenoid valve, enters the rear airtight sensor, and uses the airtight sensor to record and compare the gas volume at the front and rear positions to obtain the airtight performance, thereby realizing the simulation detection of the high-temperature and high-pressure working condition of the sample solenoid valve at the first station; the gas continues to flow through the one-way valve 4 and enters cavity 1 to store the gas that has been used for the first time; the one-way valve 2 is turned on to guide the gas that has been used for the first time in cavity 1 to the Into the piston cylinder, and flows to the front and rear airtight sensors and the sample solenoid valve again. The second used gas flows through the one-way valve 3 into the cavity 2 for storage, completing the second detection at the second station; the vacuum pump works to remove the residual gas inside the cavity 1 and the second detection is carried out at the same time; the one-way valve 2 is turned on, and the second used gas flows into the piston cylinder, the front and rear airtight sensors, and the sample solenoid valve again, and the third used gas is stored in the cavity 1 through the one-way valve 4, completing the third station detection; the fourth station The fourth used gas flows to the cavity 2 accordingly, and this cycle is repeated, reducing the impact caused by temperature and air pressure loss, and more truly reflecting the working conditions of the solenoid valve.

[0036] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A solenoid valve life performance detection device, characterized in that: It includes a double-piston air pressure control mechanism, an air source triplet, an electromagnetic detection mechanism, a cavity, a movable guide rail module, an air tightness detection mechanism, a sealing joint fixed on the electromagnetic detection mechanism, and a combustion chamber fixed above the main frame and generating high-temperature gas through electric heating; The double-piston air pressure control mechanism, the air source triplet and the air tightness detection mechanism are connected to form an air intake circuit, which is connected to the air inlet of the solenoid valve to be detected through a sealing joint; the air tightness sensor records and compares the gas volume in the front and rear positions, and the electromagnetic detection mechanism collects the electromagnetic performance of the valve body when the outside is energized through an electromagnetic probe; the movable guide module fixes the solenoid valve to be detected through an electromagnet, and can realize the movement of the solenoid valve to be detected in different detection stations; the other end of the solenoid valve to be detected is connected to the vacuum pump through a sealing joint, and the vacuum pump is connected to the cavity through an air pipe to create a vacuum environment in the cavity to form an air outlet circuit; the extracted gas is heated and used for the detection of the solenoid valve in the next station, thereby realizing the cyclic detection of the solenoid valve.

2. The solenoid valve life performance detection device according to claim 1, characterized in that: The dual-piston air pressure control mechanism includes a first stepper motor, a piston cylinder, a valve block, a one-way valve, an air circuit connection block, a valve body end cover, a cam, a spring, a piston, a piston end cover, a piston cylinder body, a housing and a dual cam guide shaft; the piston end cover and the valve body end cover are connected by threads; the first stepper motor drives the piston to operate in the piston cylinder body to achieve output air pressure regulation, and through the cooperation of the cam, the spring and the guide shaft, the piston cylinder can switch under different pressure states to simulate the response of the solenoid valve in actual work; the valve block and the one-way valve ensure the correct flow of the output airflow, and the air circuit connection block connects each air circuit.

3. The solenoid valve life performance detection device according to claim 1, characterized in that: The airtightness detection mechanism includes a cylinder base, a cylinder, a magnetic cover, inlet and outlet joints, an airtightness detection sensor, a power interface and a fixed plate; the cylinder drives the fixed plate to dock with the solenoid valve, so that the inlet and outlet joints, the power interface and the solenoid valve interface are accurately docked, and the magnetic cover fits the outer contour of the solenoid valve for sealing and fixing. The airtightness detection sensor can monitor the airtightness parameters of the valve under test in real time, and analyze the airtightness data through the control unit to detect the sealing performance of the solenoid valve under high temperature and high pressure conditions.

4. The solenoid valve life performance detection device according to claim 1, characterized in that: The movable guide rail module includes a second stepper motor, a guide rail, a base, an electromagnet and a rotating table; the rotating table is fixed on the movable guide rail, the base is installed on the rotating table, the second stepper motor drives the rotating table to move on the guide rail, and the fixed fixture module is installed with an electromagnet for firmly adsorbing the solenoid valve to ensure that it does not move during the detection process.

5. The solenoid valve life performance detection device according to claim 3, characterized in that: An electromagnet is arranged inside the magnetic cover, and the inner contour is closely fitted with the outer contour of the solenoid valve through magnetic attraction; a sealing joint is placed inside the magnetic cover, which can be in close contact with the solenoid valve and guide the solenoid valve to be precisely connected with the sealing joint.

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