TWI823695B - Solenoid valve characteristic measurement system, method and heating furnace equipment with solenoid valve characteristic measurement system - Google Patents

Abstract

The present invention is a solenoid valve characteristic measurement system, method and heating furnace equipment with a solenoid valve characteristic measurement system. After a monitoring unit receives a real-time signal to be measured, the monitoring unit determines the real-time signal to be measured and a pressure or current The reference signal calculates a signal variation, and the signal variation can reflect the driving current characteristics or pressure characteristics of a main solenoid valve each time it is operated. Through this, the usage of the main solenoid valve can be inferred, and the main solenoid valve can be detected early. If there may be an abnormality, before the main solenoid valve suddenly fails, without temporarily shutting down a heating furnace, the replacement of the main solenoid valve can be arranged in advance and the production line capacity can be appropriately adjusted to reduce the impact.

Description

Solenoid valve characteristic measurement system, method and heating furnace equipment with solenoid valve characteristic measurement system

The present invention relates to measurement systems, in particular to solenoid valve characteristic measurement systems and methods, and heating furnace equipment with the solenoid valve characteristic measurement system.

With the development of industry, automated control systems have been widely used in various industrial processes. Among them, solenoid valves are important components in automated control systems. Solenoid valves are usually installed on a pipeline. Taking a two-position, two-port solenoid valve as an example, by energizing or de-energizing a coil of this type of solenoid valve, the coil generates changes in the magnetic field and drives a valve core of the solenoid valve. The reciprocating motion of the valve core will control the opening or closing of this type of solenoid valve, thereby determining the passage or blocking of the fluid in the pipeline.

This type of solenoid valve is widely used in a heating furnace in the production line. As the main component of combustion control, this type of solenoid valve controls whether fuel enters a burner. When this type of solenoid valve operates for a long time, it may cause the coil to age, the valve core to wear, etc. However, the coil, the valve core, etc. are all located inside this type of solenoid valve, and maintenance personnel cannot know this type of solenoid in advance through the appearance. The degree of aging of the valve, and when this type of solenoid valve is over-aged and suddenly fails, the heating furnace needs to be temporarily shut down to replace the solenoid valve, which directly affects the established production capacity of the production line.

In view of the fact that the operating status of existing solenoid valves used in heating furnaces cannot be known from their appearance alone, the problem is that the heating furnace can only be temporarily shut down for replacement and maintenance when the solenoid valve fails. The present invention provides a solenoid valve characteristic measurement system, method and heating furnace equipment with the solenoid valve characteristic measurement system to overcome the aforementioned problems.

The solenoid valve characteristic measurement system of the present invention includes: At least one measurement module, including: an auxiliary solenoid valve connected to a fluid source; A main solenoid valve connected between the auxiliary solenoid valve and a working equipment, wherein the main solenoid valve is connected to the auxiliary solenoid valve through a pipeline; A pressure gauge is provided in the pipeline between the auxiliary solenoid valve and the main solenoid valve to detect the fluid pressure of the pipeline; An ammeter is provided on the main solenoid valve to detect the driving current of the main solenoid valve; A monitoring unit stores a current reference signal and a pressure reference signal, and the monitoring unit is connected to the driving connection end of the auxiliary solenoid valve, the driving connection end of the main solenoid valve, the pressure gauge and the ammeter; When the monitoring unit drives the auxiliary solenoid valve and the main solenoid valve to open, it receives an instant driving current signal output by the ammeter; when the monitoring unit drives the auxiliary solenoid valve and the main solenoid valve to close, it receives the pressure gauge. An instant pressure signal output; The monitoring unit compares the real-time driving current signal and the current reference signal to generate at least one current signal variation, and compares the real-time pressure signal and the pressure reference signal to generate at least one pressure signal variation, each of the current signal variation The variation of each pressure signal reflects the characteristics of the main solenoid valve.

The solenoid valve characteristic measurement method of the present invention is implemented in a monitoring unit that stores a reference signal, and the monitoring unit is connected to a driving connection end of an auxiliary solenoid valve, a driving connection end of a main solenoid valve, and an ammeter. Wherein, the ammeter is used to detect a driving current of the main solenoid valve. The method includes: Step (a1): drive the auxiliary solenoid valve to open; Step (a2): Start receiving a real-time signal to be measured from the galvanometer; Step (a3): drive the main solenoid valve to open, and drive the main solenoid valve to close after a preset time; Step (a4): When the main solenoid valve is closed, stop receiving the real-time signal to be measured from the current meter; Step (a5): Generate at least one signal variation based on the comparison between the real-time signal to be measured and the reference signal; Wherein, the reference signal is a current reference signal, the real-time signal to be measured is a real-time driving current signal, each signal variation is a current signal variation, and the current signal variation reflects the current characteristics of the main solenoid valve.

Another solenoid valve characteristic measurement method of the present invention is implemented in a monitoring unit that stores a reference signal, and the monitoring unit is connected to a driving connection end of an auxiliary solenoid valve, a driving connection end of a main solenoid valve, and a pressure gauge. , wherein the pressure gauge is arranged in a pipeline between the auxiliary solenoid valve and the main solenoid valve, and the method includes: Step (b1): drive the main solenoid valve to close and the auxiliary solenoid valve to open, so that a fluid flows into the pipeline; Step (b2): Start receiving a real-time signal to be measured from the pressure gauge; Step (b3): drive the auxiliary solenoid valve to close; Step (b4): Stop receiving the real-time signal to be measured from the pressure gauge after a preset time; Step (b5): Generate at least one signal variation based on the comparison of the real-time signal to be measured and the reference signal; Wherein, the reference signal is a pressure reference signal, the real-time signal to be measured is a real-time pressure signal, each signal variation is a pressure signal variation, and the pressure signal variation reflects the pressure characteristics of the main solenoid valve.

The heating furnace equipment with a solenoid valve characteristic measurement system of the present invention includes: a pressure regulating valve connected to a fluid source that supplies a fuel; At least one measurement module, including: An auxiliary solenoid valve connected to the pressure regulating valve; A main solenoid valve connected between the auxiliary solenoid valve and the throttle valve, wherein the main solenoid valve is connected to the auxiliary solenoid valve through a pipeline; A pressure gauge is provided in the pipeline between the auxiliary solenoid valve and the main solenoid valve to detect the fluid pressure of the pipeline; An ammeter is provided on the main solenoid valve to detect the driving current of the main solenoid valve; A heating furnace has a burner connected to the throttle valve; A monitoring unit stores a current reference signal and a pressure reference signal, and the monitoring unit is connected to the driving connection end of the auxiliary solenoid valve, the driving connection end of the main solenoid valve, the pressure gauge and the ammeter; When the monitoring unit drives the auxiliary solenoid valve and the main solenoid valve to open, it receives an instant driving current signal output by the ammeter; when the monitoring unit drives the auxiliary solenoid valve and the main solenoid valve to close, it receives the pressure gauge. An instant pressure signal output; The monitoring unit compares the real-time driving current signal and the current reference signal to generate at least one current signal variation, and compares the real-time pressure signal and the pressure reference signal to generate at least one pressure signal variation, each of the current signal variation The variation of each pressure signal reflects the characteristics of the main solenoid valve.

The common feature of the solenoid valve characteristic measurement system, method and heating furnace equipment with the solenoid valve characteristic measurement system of the present invention is that after the monitoring unit receives the real-time signal to be measured, the monitoring unit adjusts the signal and pressure according to the real-time signal to be measured. Or the current reference signal is used to calculate the signal variation, and the signal variation can reflect the driving current characteristics or pressure characteristics of the main solenoid valve each time it is operated. Therefore, the signal variation can be used to predict the use of the main solenoid valve. , it can be discovered early that the main solenoid valve may be abnormal, and before the main solenoid valve suddenly fails, without temporarily shutting down the heating furnace, the replacement of the main solenoid valve can be arranged in advance and the production line capacity can be appropriately adjusted. Reduce the impact.

In order to understand the technical features and practical effects of the present invention in detail, and to realize it according to the content of the invention, the detailed description is as follows:

Please refer to Figure 1. The solenoid valve characteristic measurement system of the present invention includes at least one measurement module 10 and a monitoring unit 20. Figure 1 takes two measurement modules 10 as an example. Each measurement module 10 includes an auxiliary solenoid valve 11, a main solenoid valve 12, a pressure gauge 13 and a current meter 14. One end of the auxiliary solenoid valve 11 is connected to a fluid source 1, and the fluid source 1 supplies a fluid. The auxiliary solenoid valve 11 operates at a working pressure value that allows the auxiliary solenoid valve 11 to operate normally. However, a fluid pressure value of the fluid may not meet the working pressure value. Therefore, preferably, a pressure regulating valve 30 can be provided between the auxiliary solenoid valve 11 and the fluid source 1. The pressure regulating valve 30 can adjust the Fluid pressure value to comply with the working pressure value.

The working pressure value can also make the main solenoid valve 12 operate normally, and the main solenoid valve 12 has an inlet end and an outlet end. The inlet end is connected to the other end of the auxiliary solenoid valve 11 through a pipeline 15. The outlet The end of the main electromagnetic valve 12 can be connected to a working equipment through a throttling valve 40 , which can be but is not limited to a heating furnace. The throttling valve 40 can control the flow rate of fluid flowing out of the outlet end of the main solenoid valve 12 . The pressure gauge 13 is disposed in the pipeline 15 between the auxiliary solenoid valve 11 and the main solenoid valve 12 to detect the fluid pressure of the pipeline 15; the galvanometer 14 is disposed in the main solenoid valve 12 to detect the fluid pressure in the pipeline 15. Measure the driving current of the main solenoid valve 12. It is particularly important to note that the flow of the fluid source 1 into the working equipment is mainly controlled through the main solenoid valve 12. The main solenoid valve 12 is the object of characteristic measurement in the present invention, and the auxiliary solenoid valve 11 is only used to assist in measuring the characteristics. Characteristics of main solenoid valve 12.

The monitoring unit 20 is the control and data processing core of the solenoid valve characteristic measurement system, and stores data of a current reference signal and data of a pressure reference signal. The generation methods of the current reference signal and the pressure reference signal will be described later. To elaborate further. The monitoring unit 20 is connected to the driving connection end of the auxiliary solenoid valve 11, the driving connection end of the main solenoid valve 12, the pressure gauge 13 and the ammeter 14. The monitoring unit 20 can respectively transmit a first driving current C1, a The second driving current C2 is supplied to the driving connection end of the auxiliary solenoid valve 11 and the driving connection end of the main solenoid valve 12 to respectively control the opening and closing states of the auxiliary solenoid valve 11 and the main solenoid valve 12; the monitoring unit 20 can Receive an instantaneous pressure signal S1 transmitted by the pressure gauge 13 and an instantaneous driving current signal S2 transmitted by the ammeter 14 respectively, wherein the instantaneous pressure signal S1 reflects the fluid pressure of the pipeline 15 and the instantaneous driving current signal S2 Reflects the driving current of the main solenoid valve 12.

The monitoring unit 20 can compare the difference between the real-time pressure signal S1 and the pressure reference signal to generate at least one pressure signal variation, and compare the difference between the real-time driving current signal S2 and the current reference signal to generate at least A current signal variation, wherein each current signal variation and each pressure signal variation reflect the characteristics of the main solenoid valve 12 , for example, as the main solenoid valve 12 continues to be used, the pressure signal changes The amount changes from 0 to 5, which may indicate that the main electromagnetic 12 is leaking due to aging.

In an embodiment of the solenoid valve characteristic measurement system of the present invention, the monitoring unit 20 includes a host 21, a control module 22 and a signal module 23. The host 21 stores the current reference signal and the pressure reference signal. , the host 21 can be but is not limited to a programmable logic controller (PLC); the control module 22 is connected between the host 21 and the driving connection end of the auxiliary solenoid valve 11 and the driving connection end of the main solenoid valve 12 During this time, the control module 22 outputs the first driving current C1 and the second driving current C2 according to the control signal of the host 21. For example, the control module 22 can be composed of an input-output interface card and a plurality of relays. A control circuit; the signal module 23 is connected between the host 21 and the pressure gauge 13 and the ammeter 14. The signal module 23 receives the real-time pressure signals S1 and S1 from the pressure gauge 13 and the ammeter 14 respectively. The real-time driving current signal S2 is sent to the host 21. The signal module 23 can be an analog-to-digital converter, for example. In order to explain the operation of the solenoid valve characteristic measurement system in more detail, the following takes the monitoring unit 20 including the host 21, the control module 22 and the signal module 23 as an example.

Regarding the generation method of the current reference signal and the pressure reference signal, it is necessary to store the monitoring data in the initial stage of operation (pre-operation) of the solenoid valve characteristic measurement system through the host 21. For specific instructions, please refer to Figure 2, which shows the auxiliary solenoid The relationship between the valve 11, the main solenoid valve 12 and the signal module 23 over time. At a time point t0, the control module 22 outputs the first driving current C1 according to the control signal of the host 21 to control the auxiliary solenoid valve 11 to open and be in a conductive state so that the fluid can flow into the auxiliary solenoid valve 11 and the pipeline 15 between the main solenoid valve 12.

Then the control module 22 outputs the second driving current C2 according to the control signal of the host 21 to control the main solenoid valve 12 to open, and control the main solenoid valve 12 to close after a working period T, and according to the host 21 The main solenoid valve 12 is repeatedly opened and closed a preset number of times to simulate the actual operation of the solenoid valve characteristic measurement system. For example, the preset number is 100 times. At a time point t1 before the main solenoid valve 12 is opened for the 100th time, the signal module 23 begins to receive the real-time driving current signal S2 of the ammeter 14 and transmits it to The host 21 and then the control module 22 control the opening of the main solenoid valve 12 to ensure that the signal module 23 can record the smaller real-time driving current signal S2 corresponding to when the main solenoid valve 12 just opens, and at the 100th After the working cycle T times, the control module 22 controls the main solenoid valve 12 to close.

At a time point t2 after the main solenoid valve 12 is closed, the signal module 23 stops receiving the real-time driving current signal S2 of the ammeter 14 and starts to receive the real-time pressure signal S1 of the pressure gauge 13. At the same time, the The control module 22 controls the auxiliary solenoid valve 11 to close so that the fluid can be stored in the pipeline 15 . Until a time point t3, the signal module 23 stops receiving the real-time pressure signal of the pressure gauge 13. The host 21 can store the real-time pressure signal S1 and the real-time driving current signal S2 as the pressure reference signal through the above method. the current reference signal.

Or, at a time point t4, the control module 22 controls the auxiliary solenoid valve to open, and continues to run the solenoid valve characteristic measurement system in the above manner. The host 21 can store multiple real-time pressure signals S1 and the real-time pressure signal S1. Driving current signal S2, for example, the host 21 stores the real-time pressure signal S1 and the real-time driving current signal S2 at the 100th, 200th and 300th times, and then calculates the real-time pressure signal S1 and the real-time driving current signal S2 respectively. The average value of these real-time driving current signals S2 is set to the pressure reference signal and the current reference signal.

The solenoid valve characteristic measurement method of the present invention is implemented in the monitoring unit 20 in the above-mentioned solenoid valve characteristic measurement system. The monitoring unit 20 stores a reference signal. Please refer to Figures 3 and 4 in conjunction with the solenoid valve of the present invention. In a first embodiment of the characteristic measurement method, the method includes:

S10: Drive the auxiliary solenoid valve 11 to open. Specifically, the host 21 outputs the first driving current C1 through the control module 22 to control the auxiliary solenoid valve 11 to open and be in a conductive state.

S11: Start receiving a real-time signal to be tested from the ammeter 14. As shown in Figure 4, at a time point T1, the host 21 starts and continues to receive the real-time signal to be tested through the signal module 23, where the real-time signal to be tested is The signal to be tested may be the real-time driving current signal S2.

S12: Drive the main solenoid valve 12 to open, and drive the main solenoid valve 12 to close after a preset time P0. Specifically, the host 21 outputs the second driving current C2 through the control module 22 to control the The main solenoid valve 12 is opened and in a conductive state, and the preset time P0 can be the working period T of the main solenoid valve 12 .

S13: When the main solenoid valve 12 is closed, it stops receiving the real-time signal to be measured from the ammeter 14. The real-time signal to be tested from the time point T1 to a time point T2 is as shown in FIG. 4 , wherein the real-time signal to be tested may have periodicity.

S14: Generate at least one signal variation based on the comparison between the real-time signal to be measured and the reference signal, where the reference signal is the current reference signal, and each signal variation is a current signal variation, and the current signal variation The quantity reflects the current characteristics of the main solenoid valve 12. In addition, because the real-time signal to be tested may have periodicity, the comparison method of the real-time signal to be tested and the reference signal may be the comparison of the real-time signal to be tested and the reference signal for the entire period, or may be the comparison of the half-cycle of the signal to be tested. The real-time signal to be tested is compared with the reference signal.

Please refer to Figure 5. The real-time driving current signal S2 and the current reference signal are obtained when the above method is repeated millions of times. In a time period P1, the real-time driving current signal S2 is compared with the current reference signal. has a larger peak value, so the calculated variation of the current signal is larger, which reflects that the main solenoid valve 12 may be aging, causing its internal components to require a larger driving current to operate normally.

Please refer to Figure 6 and Figure 7. In a second embodiment of the solenoid valve characteristic measurement method of the present invention, the method includes:

S20: drive the main solenoid valve 12 to close and the auxiliary solenoid valve 11 to open, so that the fluid flows into the pipeline 15.

S21: Start receiving a real-time signal to be tested from the pressure gauge 13. As shown in Figure 7, at a time point T3, the signal module 23 starts to receive the real-time signal to be tested and output it to the host 21, where the real-time signal to be tested is The measurement signal may be the real-time pressure signal S1.

S22: drive the auxiliary solenoid valve 11 to close. Specifically, the control module 22 controls the auxiliary solenoid valve 11 to close so that the pipeline 15 is in a closed state and the fluid is stored therein.

S23: Stop receiving the real-time signal to be measured from the pressure gauge 13 after the preset time. The real-time signal to be measured from the time point T3 to a time point T4 is as shown in FIG. 7 .

S24: Generate at least one signal variation based on the comparison between the real-time signal to be measured and the reference signal, where the reference signal is the pressure reference signal, and each signal variation is a pressure signal variation, and the pressure signal variation The quantity reflects the pressure characteristics of the main solenoid valve 12.

The pressure state of the pipeline 15 is measured through the pressure gauge 13 to reflect whether there is leakage in the main solenoid valve 12. For example, if this method is executed repeatedly, the variation of the pressure signal when 100 times is 0, and the variation of the pressure signal after millions of times changes to 3, which means that the main solenoid valve 12 may have worn a seal inside it due to long-term use.

Please refer to Figure 8. The solenoid valve characteristic measurement system of the present invention can be installed in a heating furnace 60 to form a heating furnace device with a solenoid valve characteristic measurement system. The heating furnace device with the solenoid valve characteristic measurement system includes the electromagnetic valve characteristic measurement system. The valve characteristic measurement system, the pressure regulating valve 30, the throttle valve 40, a flow meter 50 and the heating furnace 60, the solenoid valve characteristic measurement system, the pressure regulating valve 30 and the throttle valve 40 are as described above. narrated, so I won’t repeat it again. The pressure regulating valve 30 is connected to the fluid source 1, and the fluid source 1 supplies a fuel. The flow meter 50 is disposed between the main solenoid valve 12 and the throttle valve 40 to detect the flow rate of the fuel flowing out of the outlet end of the main solenoid valve 12 to generate a real-time flow signal S3 and output it to The signal module 23. The heating furnace 60 has a burner 61. The burner 61 is connected to the throttle valve 40. The flow rate of the fuel flowing into the burner 61 is controlled according to the throttle valve 40. The burner 61 is electrically connected to the control module. Group 22, the control module 22 outputs a combustion control command C3 to the burner 61 to control the state of the burner 61; when the burner 61 is ignited, the interior of the heating furnace can be heated.

Regarding the operation of the heating furnace equipment with the solenoid valve characteristic measurement system, please refer to Figure 9. The difference is that when the main solenoid valve 12 is opened, the fuel can flow into the combustion In the burner 61, when the burner 61 is ignited, the inside of the heating furnace 60 can be heated; when the main solenoid valve 12 is closed, the burner 61 is closed at the same time to stop heating the heating furnace. During each heating process, the signal module 23 receives the real-time driving current signal S2 of the ammeter 14 (in a time section P2 as shown in FIG. 9 ), and receives the real-time pressure of the pressure gauge 13 The signal S1 (in a time section P3 as shown in FIG. 9 ) allows the host 21 to compare the real-time driving current signal S2 with the current reference signal to calculate the variation of each current signal and compare the real-time pressure The signal S1 and the pressure reference signal are used to calculate each pressure signal variation, wherein each current signal variation and each pressure signal variation reflect the current and pressure characteristics of the main solenoid valve 12 during each heating process.

To sum up, the common feature of the solenoid valve characteristic measurement system, method and heating furnace equipment with the solenoid valve characteristic measurement system of the present invention is that after the monitoring unit receives the real-time signal to be measured, the monitoring unit The signal to be measured and the pressure or current reference signal are used to calculate the signal variation, and the signal variation can reflect the driving current characteristics or pressure characteristics of the main solenoid valve each time it is operated. Preferably, if the signal variation reaches a predetermined When a threshold is set, the monitoring unit can issue a warning to prompt maintenance personnel to perform maintenance. In this way, if the possible abnormality of the main solenoid valve is discovered early, the replacement of the main solenoid valve can be arranged in advance and the production line capacity can be appropriately adjusted without temporarily shutting down the heating furnace before the main solenoid valve suddenly fails. , will reduce the degree of impact.

1: Fluid source

10:Measurement module

11: Auxiliary solenoid valve

12: Main solenoid valve

13: Pressure gauge

14: galvanometer

15:Pipeline

20:Monitoring unit

21:Host

22:Control module

23:Signal module

30: Pressure regulating valve

40:Throttle valve

50:Flowmeter

60:Heating furnace

61:Burner

C1: first drive current

C2: second drive current

C3: Combustion control command

P0: preset time

P1~P3: time section

S1: real-time pressure signal

S2: Real-time drive current signal

S3: Real-time traffic signal

T: work cycle

T1~T4: time point

t0~t4: time point

Figure 1: Circuit block diagram of the solenoid valve characteristic measurement system of the present invention. Figure 2: Signal waveform diagram when the solenoid valve characteristic measurement system of the present invention generates a current reference signal and a pressure reference signal. Figure 3: A flow chart of a first embodiment of the solenoid valve characteristic measurement method of the present invention. Figure 4: A schematic diagram of the signal waveforms of the auxiliary solenoid valve, signal module, main solenoid valve and real-time drive current signal when executing the first embodiment of the solenoid valve characteristic measurement method of the present invention. Figure 5: Signal waveform diagram of current reference signal and real-time drive current signal. Figure 6: A flow chart of a second embodiment of the solenoid valve characteristic measurement method of the present invention. Figure 7: A schematic diagram of the signal waveforms of the auxiliary solenoid valve, signal module, main solenoid valve and real-time pressure signal when executing the second embodiment of the solenoid valve characteristic measurement method of the present invention. Figure 8: Circuit block diagram of a heating furnace with a solenoid valve characteristic measurement system. Figure 9: Signal waveform diagram during operation of a heating furnace equipped with a solenoid valve characteristic measurement system.

1: Fluid source

10:Measurement module

11: Auxiliary solenoid valve

12: Main solenoid valve

13: Pressure gauge

14: galvanometer

15:Pipeline

20:Monitoring unit

21:Host

22:Control module

23:Signal module

30: Pressure regulating valve

40:Throttle valve

C1: first drive current

C2: second drive current

S1: real-time pressure signal

S2: Real-time drive current signal

Claims (10)

A solenoid valve characteristic measurement system, including: at least one measurement module, including: an auxiliary solenoid valve, one end of which is connected to a fluid source; a main solenoid valve, which has an inlet end and an outlet end, the The inlet end is connected to the other end of the auxiliary solenoid valve through a pipeline, and the outlet end is connected to a working equipment; a pressure gauge is provided in the pipeline between the auxiliary solenoid valve and the main solenoid valve to detect the pipe. the fluid pressure of the circuit; an ammeter is installed on the main solenoid valve to detect the driving current of the main solenoid valve; a monitoring unit stores a current reference signal and a pressure reference signal, and the monitoring unit is connected to the auxiliary solenoid valve The driving connection end of the valve, the driving connection end of the main solenoid valve, the pressure gauge and the ammeter; when the monitoring unit drives the auxiliary solenoid valve and the main solenoid valve to open, it receives an instant driving current output by the ammeter. signal; when the monitoring unit drives the auxiliary solenoid valve and the main solenoid valve to close, it receives an instant pressure signal output by the pressure gauge; the monitoring unit compares the instant drive current signal with the current reference signal to generate at least one current The signal variation is compared with the real-time pressure signal and the pressure reference signal to generate at least one pressure signal variation. Each current signal variation and each pressure signal variation reflect the characteristics of the main solenoid valve. The solenoid valve characteristic measurement system as described in claim 1, wherein the current reference signal and the real-time drive current signal have periodicity, and each current signal variation is a half-cycle of the current reference signal and a half-cycle of the real-time The driving current signal is compared and generated. The solenoid valve characteristic measurement system as described in claim 1, wherein the monitoring unit includes: a host that stores the current reference signal and the pressure reference signal; A control module connected to the host, the drive connection end of the auxiliary solenoid valve and the drive connection end of the main solenoid valve. The control module drives the auxiliary solenoid valve and the main solenoid valve respectively according to the control of the host; a signal The module is connected to the host, the pressure gauge and the current meter. The signal module receives the real-time pressure signal and the real-time driving current signal and sends them to the host. A solenoid valve characteristic measurement method is implemented in a monitoring unit that stores a reference signal, and the monitoring unit is connected to a driving connection end of an auxiliary solenoid valve, a driving connection end of a main solenoid valve, and an ammeter, wherein , the ammeter is used to detect a driving current of the main solenoid valve, one end of the auxiliary solenoid valve is connected to a fluid source, the main solenoid valve has an inlet end and an outlet end, the inlet end is connected to the The other end of the auxiliary solenoid valve is connected to a working device. The method includes: step (a1): driving the auxiliary solenoid valve to open; step (a2): starting to receive a real-time signal to be measured from the galvanometer; step (a3): drive the main solenoid valve to open, and drive the main solenoid valve to close after a preset time; step (a4): when the main solenoid valve is closed, stop receiving the real-time signal to be measured from the ammeter; step (a5): At least one signal variation is generated based on the comparison between the real-time signal to be measured and the reference signal; wherein the reference signal is a current reference signal, the real-time signal to be measured is a real-time drive current signal, and each of the signal variations The quantity is a current signal variation, which reflects the current characteristics of the main solenoid valve. The solenoid valve characteristic measurement method as described in claim 4, wherein the current reference signal and the real-time drive current signal have periodicity, and in step (a5), each signal variation is a half-cycle of the current reference signal and a half-cycle The real-time driving current signal comparison is generated. A solenoid valve characteristic measurement method is implemented in a monitoring unit that stores a reference signal, and the monitoring unit is connected to a driving connection end of an auxiliary solenoid valve, a driving connection end of a main solenoid valve, and a pressure gauge, wherein , one end of the auxiliary solenoid valve is connected to a fluid source, the main solenoid valve has an inlet end and an outlet end, the inlet end is connected to the other end of the auxiliary solenoid valve through a pipeline, the outlet end is connected to a working equipment, the The pressure gauge is installed in the pipeline between the auxiliary solenoid valve and the main solenoid valve. The method includes: step (b1): driving the main solenoid valve to close and the auxiliary solenoid valve to open, so that a fluid flows into the pipe. On the way; Step (b2): Start receiving a real-time signal to be measured from the pressure gauge; Step (b3): Drive the auxiliary solenoid valve to close; Step (b4): Stop receiving the signal from the pressure gauge after a preset time. Real-time signal to be measured; step (b5): generate at least one signal variation based on comparison of the real-time signal to be measured and the reference signal; wherein the reference signal is a pressure reference signal, and the real-time signal to be measured is a real-time pressure signal , each signal variation is a pressure signal variation, and the pressure signal variation reflects the pressure characteristics of the main solenoid valve. A heating furnace equipment with a solenoid valve characteristic measurement system, including: a pressure regulating valve, connected to a fluid source, the fluid source supplies a fuel; at least one measurement module, including: an auxiliary solenoid valve, the auxiliary solenoid valve The pressure regulating valve is arranged and connected between one end of the fluid source and the fluid source; a main solenoid valve has an inlet end and an outlet end, and the inlet end is connected to the other end of the auxiliary solenoid valve through a pipeline, and the outlet end passes through A throttle valve is connected to a working equipment; A pressure gauge is provided in the pipeline between the auxiliary solenoid valve and the main solenoid valve to detect the fluid pressure of the pipeline; an ammeter is provided in the main solenoid valve to detect the main solenoid valve. a driving current; a heating furnace with a burner connected to the throttle valve; a monitoring unit storing a current reference signal and a pressure reference signal, and the monitoring unit is connected to the driving connection end of the auxiliary solenoid valve , the driving connection end of the main solenoid valve, the pressure gauge and the ammeter; when the monitoring unit drives the auxiliary solenoid valve and the main solenoid valve to open, it receives an instant driving current signal output by the ammeter; the monitoring unit When the auxiliary solenoid valve and the main solenoid valve are driven to be closed, a real-time pressure signal output by the pressure gauge is received; the monitoring unit compares the real-time driving current signal with the current reference signal to generate at least one current signal variation. The real-time pressure signal and the pressure reference signal are used to generate at least one pressure signal variation, and each current signal variation and each pressure signal variation reflect the characteristics of the main solenoid valve. The heating furnace equipment with a solenoid valve characteristic measurement system as described in claim 7, wherein the current reference signal and the real-time drive current signal have periodicity, and each current signal variation is a half-cycle of the current reference signal and The real-time driving current signal of half cycle is generated by comparison. The heating furnace equipment with a solenoid valve characteristic measurement system as described in claim 7, wherein a flow meter is further disposed between the main solenoid valve and the throttle valve, and the flow meter detects the flow out of the main solenoid valve. fuel flow to generate a real-time flow signal. The heating furnace equipment with a solenoid valve characteristic measurement system as described in claim 9, wherein the monitoring unit includes: a host that stores the current reference signal and the pressure reference signal; A control module is connected to the host, the drive connection end of the auxiliary solenoid valve, the drive connection end of the main solenoid valve and the burner. The control module drives the auxiliary solenoid valve and the main solenoid valve respectively according to the control of the host machine. The valve and the burner; a signal module connected to the host, the pressure gauge, the current meter and the flow meter. The signal module receives the real-time pressure signal, the real-time driving current signal and the real-time flow signal and sends them to the host.

Images