Solenoid valve verification system

Abstract

The utility model provides an electromagnetic valve verification system. The electromagnetic valve verification system comprises a voltage detection loop and a resistance detection loop, the voltage detection loop comprises a first pole of the power conversion module, a first connecting section, a divider resistor, a second connecting section and a second pole of the power conversion module which are connected in sequence, and further comprises a third connecting section, an electromagnetic valve and a voltmeter, the third connecting section is connected with the control end of the divider resistor and the second connecting section, and the electromagnetic valve is connected to the third connecting section; the voltmeter is connected in parallel with the solenoid valve; the resistance detection loop is connected in parallel with the electromagnetic valve and comprises a fourth connecting section, a resistance meter and a fifth connecting section which are connected in sequence; a first switch module is integrally arranged on the first connecting section and the third connecting section; a second switch module is integrally arranged on the fourth connecting section and the fifth connecting section; the on-off states of the first switch module and the second switch module are opposite; the method for checking the electromagnetic valve is simple and high in efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of solenoid valves, in particular to a solenoid valve calibration system. Background Art

[0002] Solenoid valves are often used in pump-turbine systems of pump-storage power stations. The operating conditions of pump-turbine systems of pump-storage power stations are complex. Solenoid valves, as important components, are often in high-pressure, high-humidity, and high-frequency working environments. Therefore, the calibration of solenoid valves is particularly important.

[0003] Conventional solenoid valve calibration involves two main aspects: voltage and resistance. Voltage calibration focuses on the solenoid valve's response and performance under varying voltage conditions, ensuring reliable activation and deactivation within the specified voltage range. Resistance calibration, on the other hand, examines the solenoid valve coil's resistance to verify its integrity and electrical characteristics.

[0004] The voltage calibration and resistance calibration of the solenoid valve are generally performed separately. After completing one of the calibration items, the wiring circuit needs to be changed to perform the calibration of the other item, which makes the calibration efficiency of the solenoid valve low. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a solenoid valve calibration system to solve the problem of low calibration efficiency of the solenoid valve.

[0006] Based on the above purpose, the utility model provides a solenoid valve calibration system.

[0007] A solenoid valve calibration system includes a voltage detection circuit and a resistance detection circuit;

[0008] The voltage detection circuit includes a first pole, a first connecting section, a voltage dividing resistor, a second connecting section, and a second pole of the power conversion module connected in sequence, and also includes a third connecting section, a solenoid valve, and a voltmeter, the third connecting section being connected to the control end of the voltage dividing resistor and the second connecting section, the solenoid valve being connected to the third connecting section, and the voltmeter being connected in parallel with the solenoid valve;

[0009] The resistance detection circuit is arranged in parallel with the solenoid valve, and includes a fourth connection section, a resistance meter and a fifth connection section connected in sequence;

[0010] The first connecting segment and the third connecting segment are integrated with a first switch module to control the disconnection or conduction of the voltage detection circuit; the fourth connecting segment and the fifth connecting segment are integrated with a second switch module to control the disconnection or conduction of the resistance detection circuit;

[0011] The on-off states of the first switch module and the second switch module are opposite.

[0012] Optionally, the first switch module includes a first connection end, a second connection end, a third connection end and a fourth connection end, the first connection end is connected to the first pole of the power conversion module, the second connection end is connected to the input end of the voltage divider resistor; the third connection end is connected to the solenoid valve; and the fourth connection end is connected to the control end of the voltage divider resistor.

[0013] Optionally, the second switch module includes a fifth connection terminal, a sixth connection terminal, a seventh connection terminal and an eighth connection terminal, the fifth connection terminal is connected to the solenoid valve, the sixth connection terminal is connected to the input terminal of the resistance meter, the seventh connection terminal is connected to the second connection section, and the eighth connection terminal is connected to the output terminal of the resistance meter.

[0014] Optionally, the first switch module and the second switch module are integrated into one transfer switch.

[0015] Optionally, when the first connection terminal and the second connection terminal are conductive, and the third connection terminal and the fourth connection terminal are conductive, the voltage detection loop is closed.

[0016] Optionally, when the fifth connection terminal and the sixth connection terminal are connected, and the seventh connection terminal and the eighth connection terminal are connected, the resistance detection loop is closed.

[0017] Optionally, a power switch is also connected to the first connecting section.

[0018] Optionally, the power switch is an air switch.

[0019] As can be seen from the foregoing, the solenoid valve calibration system provided by the present invention, comprising a voltage detection circuit and a resistance detection circuit, is suitable for on-site solenoid valve testing. Based on the principle of a voltage divider circuit, the solenoid valve's voltage detection circuit and resistance detection circuit are cleverly combined via a transfer switch. Switching between the voltage detection circuit and the resistance detection circuit by the transfer switch ensures that the solenoid valve's electrical performance indicators can be verified simultaneously without changing the wiring, quickly and accurately reflecting the solenoid valve's basic condition and improving solenoid valve calibration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0021] Figure 1The figure is a schematic diagram of the circuit structure of a solenoid valve calibration system of the present utility model.

[0022] Figure numerals: 1. First connection terminal; 2. Second connection terminal; 3. Third connection terminal; 4. Fourth connection terminal; 5. Fifth connection terminal; 6. Sixth connection terminal; 7. Seventh connection terminal; 8. Eighth connection terminal; 11. Power conversion module; 12. First connection section; 13. Second connection section; 14. Third connection section; 15. Voltmeter; 16. Fourth connection section; 17. Resistance meter; 18. Fifth connection section; 19. Switch; 191. First switch module; 192. Second switch module; 21. Power switch; R1. Voltage divider resistor; R2. Solenoid valve. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0024] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention should have the usual meanings understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] Based on the background technology, the calibration items of the solenoid valve in the prior art include voltage calibration and resistance calibration. The voltage calibration and resistance calibration of the solenoid valve are performed separately. When the calibration process of the pump-turbine system is very urgent, the solenoid valve calibration is a part of the pump-turbine calibration system, so there are higher requirements for the efficiency of the solenoid valve inspection.

[0026] In order to solve the above problems, the present application provides a solenoid valve calibration system, including a voltage detection circuit and a resistance detection circuit; the voltage detection circuit includes the first pole of the power conversion module, the first connecting section, the voltage dividing resistor, the second connecting section and the second pole of the power conversion module connected in sequence, and also includes a third connecting section, a solenoid valve and a voltmeter, the third connecting section is connected to the control end of the voltage dividing resistor and the second connecting section, the solenoid valve is connected to the third connecting section, and the voltmeter is connected in parallel with the solenoid valve; the resistance detection circuit is arranged in parallel with the solenoid valve, including a fourth connecting section, a resistance meter and a fifth connecting section connected in sequence; a first switch module is integrated on the first connecting section and the third connecting section to control the disconnection or conduction of the voltage detection circuit; a second switch module is integrated on the fourth connecting section and the fifth connecting section to control the disconnection or conduction of the resistance detection circuit; the on-off states of the first switch module and the second switch module are opposite.

[0027] The utility model combines the voltage detection circuit and the resistance detection circuit of the solenoid valve together according to the principle of the voltage divider circuit. The voltage detection circuit and the resistance detection circuit are switched by the first switch module and the second switch module. This ensures that the electrical performance indicators of the solenoid valve can be calibrated once without changing the wiring, and the basic conditions of the solenoid valve can be reflected quickly and accurately, thereby improving the calibration efficiency of the solenoid valve.

[0028] The following is combined with Figure 1 The embodiments of the present application will be described in detail.

[0029] like Figure 1 As shown, the utility model provides a solenoid valve calibration system, including a voltage detection circuit and a resistance detection circuit;

[0030] The voltage detection circuit includes a first terminal of the power conversion module 11, a first connecting section 12, a voltage divider resistor R1, a second connecting section 13, and a second terminal of the power conversion module 11, which are connected in sequence. It also includes a third connecting section 14, a solenoid valve R2, and a voltmeter 15. The third connecting section 14 is connected to the control end of the voltage divider resistor R1 and the second connecting section 13. The solenoid valve R2 is connected to the third connecting section 14. The voltmeter 15 is connected in parallel with the solenoid valve R2.

[0031] The resistance detection circuit is arranged in parallel with the solenoid valve R2, and includes a fourth connection section 16, an resistance meter 17 and a fifth connection section 18 connected in sequence;

[0032] The first connecting section 12 and the third connecting section 14 are integrated with a first switch module 191 to control the disconnection or conduction of the voltage detection circuit; the fourth connecting section 16 and the fifth connecting section 18 are integrated with a second switch module 192 to control the disconnection or conduction of the resistance detection circuit;

[0033] The on-off states of the first switch module 191 and the second switch module 192 are opposite.

[0034] In some embodiments, as shown in Figure 1 The power switch 21 is further connected to the first connecting section 12.

[0035] In some embodiments, the power switch 21 is an air switch.

[0036] Specifically, when the air switch is off and the first switch module 191 and the second switch module 192 are both off, the circuit is in an off state, at which time the electromagnetic valve R2 coil is connected to the detection circuit. The first switch module 191 and the second switch module 192 can control the switching of the voltage detection circuit and the resistance detection circuit, preventing the voltage detection circuit and the resistance detection circuit from being closed at the same time, which can burn the resistance meter 17.

[0037] When the air switch is closed, the first switch module 191 is on and the second switch module 192 is off, at which time the detection circuit is a voltage detection circuit, and the voltage dividing resistor R1 is a variable resistor. The variable resistor is adjusted to the maximum, the variable resistor divides all the voltage in the circuit, and then the variable resistor is gradually reduced. When the electromagnetic valve R2 operates, the voltage at this time is read as the starting voltage of the electromagnetic valve R2. The variable resistor is adjusted to the minimum, the electromagnetic valve R2 divides all the voltage in the circuit, and then the variable resistor is gradually increased. When the electromagnetic valve R2 operates, the voltage at this time is read as the return voltage of the electromagnetic valve R2.

[0038] When the air switch is closed, the first switch module 191 is off and the second switch module 192 is on, at which time the circuit is a resistance detection circuit, and the reading of the resistance meter 17 is the resistance of the electromagnetic valve R2 coil to be tested.

[0039] In summary, according to the principle of the voltage dividing circuit, the voltage detection circuit and the resistance detection circuit of the electromagnetic valve R2 are combined together through the first switch module 191 and the second switch module 192. By switching the first switch module 191 and the second switch module 192, the voltage detection circuit and the resistance detection circuit can be switched, which can ensure that the electrical performance indicators of the electromagnetic valve R2 are verified at one time without changing the wiring, quickly and accurately reflecting the basic situation of the electromagnetic valve R2, and improving the verification efficiency of the electromagnetic valve R2.

[0040] In some embodiments, as shown in Figure 1 The first switch module 191 and the second switch module 192 are integrated on a changeover switch 19.

[0041] In some embodiments, the first switch module 191 includes a first connection terminal 1, a second connection terminal 2, a third connection terminal 3 and a fourth connection terminal 4, the first connection terminal 1 is connected to the first pole of the power conversion module 11, the second connection terminal 2 is connected to the input end of the voltage divider resistor R1; the third connection terminal 3 is connected to the solenoid valve R2; the fourth connection terminal 4 is connected to the control end of the voltage divider resistor R1.

[0042] In some embodiments, the second switch module 192 includes a fifth connection terminal 5, a sixth connection terminal 6, a seventh connection terminal 7 and an eighth connection terminal 8, the fifth connection terminal 5 is connected to the solenoid valve R2, the sixth connection terminal 6 is connected to the input terminal of the resistance meter 17, the seventh connection terminal 7 is connected to the second connection section 13, and the eighth connection terminal 8 is connected to the output terminal of the resistance meter 17.

[0043] In some embodiments, when the first connection terminal 1 and the second connection terminal 2 are conductive, and the third connection terminal 3 and the fourth connection terminal 4 are conductive, the voltage detection loop is closed.

[0044] In some embodiments, when the fifth connection terminal 5 and the sixth connection terminal 6 are conductive, and the seventh connection terminal 7 and the eighth connection terminal 8 are conductive, the resistance detection loop is closed.

[0045] Specifically, the first switch module 191 and the second switch module 192 are integrated into a conversion switch 19. The method of switching the first switch module 191 and the second switch module 192 through the conversion switch 19 is simple and efficient, which further improves the efficiency of the solenoid valve R2 calibration, and can also avoid the first switch module 191 and the second switch module 192 being closed at the same time, thereby damaging the resistance meter 17, while improving the stability and safety of the circuit.

[0046] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. Within the scope of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0047] In addition, for simplicity of description and discussion, and in order not to make the embodiment of the application difficult to understand, the known power supply / ground connection with integrated circuit (IC) chip and other components may or may not be shown in the accompanying drawings provided. In addition, the device can be shown in the form of a block diagram to avoid making the embodiment of the application difficult to understand, and this also takes into account the following fact, that is, the details of the embodiment of these block diagram devices are highly dependent on the platform to be implemented in the embodiment of the application (that is, these details should be fully within the scope of understanding of those skilled in the art). When specific details (for example, circuit) are set forth to describe exemplary embodiments of the application, it will be apparent to those skilled in the art that the embodiment of the application can be implemented without these specific details or when these specific details are changed. Therefore, these descriptions should be considered to be illustrative rather than restrictive.

[0048] Although the present invention has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of these embodiments will be apparent to those skilled in the art based on the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may utilize the embodiments discussed.

[0049] The embodiments of the present application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of this application.

Claims

1. A solenoid valve calibration system, characterized in that: Including voltage detection circuit and resistance detection circuit; The voltage detection circuit comprises a first pole of a power conversion module (11), a first connecting section (12), a voltage dividing resistor (R1), a second connecting section (13), and a second pole of the power conversion module (11) connected in sequence, and further comprises a third connecting section (14), a solenoid valve (R2), and a voltmeter (15), wherein the third connecting section (14) is connected to the control end of the voltage dividing resistor (R1) and the second connecting section (13), the solenoid valve (R2) is connected to the third connecting section (14), and the voltmeter (15) is connected in parallel with the solenoid valve (R2); The resistance detection circuit is arranged in parallel with the solenoid valve (R2), and comprises a fourth connection section (16), a resistance meter (17), and a fifth connection section (18) connected in sequence; The first connecting section (12) and the third connecting section (14) are integrated with a first switch module (191) to control the disconnection or conduction of the voltage detection circuit; the fourth connecting section (16) and the fifth connecting section (18) are integrated with a second switch module (192) to control the disconnection or conduction of the resistance detection circuit; The on-off states of the first switch module (191) and the second switch module (192) are opposite.

2. A solenoid valve calibration system according to claim 1, characterized in that: The first switch module (191) comprises a first connection end (1), a second connection end (2), a third connection end (3) and a fourth connection end (4); the first connection end (1) is connected to the first pole of the power conversion module (11); the second connection end (2) is connected to the input end of the voltage divider resistor (R1); the third connection end (3) is connected to the solenoid valve (R2); and the fourth connection end (4) is connected to the control end of the voltage divider resistor (R1).

3. A solenoid valve calibration system according to claim 2, characterized in that: The second switch module (192) comprises a fifth connection terminal (5), a sixth connection terminal (6), a seventh connection terminal (7) and an eighth connection terminal (8), wherein the fifth connection terminal (5) is connected to the solenoid valve (R2), the sixth connection terminal (6) is connected to the input terminal of the resistance meter (17), the seventh connection terminal (7) is connected to the second connection section (13), and the eighth connection terminal (8) is connected to the output terminal of the resistance meter (17).

4. A solenoid valve calibration system according to claim 3, characterized in that: The first switch module (191) and the second switch module (192) are integrated into a transfer switch (19).

5. A solenoid valve calibration system according to claim 4, characterized in that: When the first connection terminal (1) and the second connection terminal (2) are connected, and the third connection terminal (3) and the fourth connection terminal (4) are connected, the voltage detection loop is closed.

6. A solenoid valve calibration system according to claim 5, characterized in that: When the fifth connection terminal (5) and the sixth connection terminal (6) are connected, and the seventh connection terminal (7) and the eighth connection terminal (8) are connected, the resistance detection loop is closed.

7. The solenoid valve calibration system according to claim 1, characterized in that: The first connecting section (12) is also connected to a power switch (21).

8. The solenoid valve calibration system according to claim 7, characterized in that: The power switch (21) is an air switch.

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