High-air-pressure electromagnetic valve capable of recognizing opening and closing states

Abstract

The invention discloses a high-pressure electromagnetic valve capable of identifying on-off states, which comprises a high-pressure electromagnetic valve, and a magnetic field change simulation assembly and a magnetic induction assembly are respectively arranged on the outer side of the high-pressure electromagnetic valve; the magnetic field change simulation assembly is used for synchronously sensing the change of the magnetic field in the iron pipe in the opening and closing process of the high-pressure electromagnetic valve; the magnetic induction assembly is used for inducing magnetic field changes of the magnetic field change simulation assembly and converting the changes into electric signals to be output. According to the high-pressure electromagnetic valve capable of recognizing the on-off state, non-contact and non-optical detection of the on-off state of the high-pressure emergency cut-off electromagnetic valve is achieved through the principle that the iron pipe seals the change of a magnetic field, and the problems of mechanical abrasion, optical pollution and the like are effectively avoided. And meanwhile, the technology has relatively high magnetic interference resistance, and high stability and reliability can be kept in a severe environment. In addition, by integrating the technology into a safety protection system, the overall safety performance of the system can be remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of solenoid valve control, and in particular to a high-pressure solenoid valve capable of identifying switch states. Background Art

[0002] At present, in high-pressure fluid control systems, solenoid valves are key control components, and accurate identification of their switch states is crucial to the safety and stability of the system. However, existing solenoid valve state identification technologies mostly rely on mechanical contacts. Optical sensors, the reliability and stability of these methods in harsh environments (such as high temperature, high pressure, strong magnetic interference, etc.) need to be improved. Magnetic field sensing technology is limited by isolation: the solenoid valve will cause changes in the magnetic field during the switching process, but because the closing resistance of the high-pressure solenoid valve is much greater than that of the ordinary solenoid valve, an iron pipe is used to strengthen the internal magnetic force, while also isolating it from the outside and not being affected by the outside. This closure has caused the external magnetic induction sensor to be unable to sense the internal magnetic field changes of the solenoid valve, and thus unable to identify the switch state of the high-pressure solenoid valve.

[0003] Existing solutions usually use mechanical contact sensors or optical sensors to detect the on / off status of the solenoid valve. These sensors are easily affected by environmental factors, and contact wear or optical component contamination after long-term use will lead to reduced detection accuracy. The iron pipe seals the magnetic field changes when the high-pressure solenoid valve is switched on and off, and the magnetic sensing technology is limited.

[0004] The defects of the existing technology: mechanical contact sensors are easy to wear and have a limited lifespan; optical sensors have high environmental requirements and are easily affected by pollution; and the working stability of both in a strong magnetic interference environment is not ideal. The iron pipe blocks the magnetic field changes of the solenoid valve switch state, and the magnetic sensing technology is limited. To this end, this application proposes a high-pressure solenoid valve that can identify the switch state, providing a new technical solution to solve the technical problems mentioned above. Summary of the invention

[0005] Based on this, it is necessary to provide a high-pressure solenoid valve that can identify the switch state in response to the above technical problems. By utilizing the principle of the change of the magnetic field closed by the iron pipe, the switch state of the high-pressure emergency cut-off solenoid valve can be detected without contact and without optical means, effectively avoiding problems such as mechanical wear and optical pollution. At the same time, this technology has strong anti-magnetic interference capabilities and can maintain high stability and reliability in harsh environments. In addition, by integrating this technology into the safety protection system, the overall safety performance of the system can be significantly improved.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A high-pressure solenoid valve capable of identifying switch states is used for state identification of a high-pressure solenoid valve closed by an iron pipe.

[0008] The high-pressure solenoid valve capable of identifying the switch state specifically includes:

[0009] A high-pressure solenoid valve, wherein a magnetic field change simulation component and a magnetic induction component are respectively arranged on the outer side of the high-pressure solenoid valve;

[0010] The magnetic field change simulation component is used to synchronously sense the change of the magnetic field inside the iron pipe during the switching process of the high-voltage solenoid valve;

[0011] The magnetic induction component is used to sense the magnetic field change of the magnetic field simulation component and convert the change into an electrical signal for output;

[0012] A screw hole is provided on the pull rod outside the iron pipe of the high-pressure solenoid valve, and the magnetic field change simulation component corresponds to the position of the screw hole. A clamping hole is provided on the outside of the high-pressure solenoid valve and near the screw hole, and the magnetic induction component corresponds to the position of the clamping hole.

[0013] As a preferred embodiment of the high-pressure solenoid valve that can identify the switching state provided by the present invention, the magnetic field change simulation component includes a magnetic block and a countersunk screw. The position of the magnetic block corresponds to the screw hole. The magnetic block is fixedly connected to the screw hole through the countersunk screw. The magnetic block is attracted to the magnetic field of the contact surface of the pull rod outside the iron pipe of the high-pressure solenoid valve.

[0014] As a preferred embodiment of the high-pressure solenoid valve that can identify the switching state provided by the present invention, the magnetic induction component includes a sensor, the sensor corresponds to the position of the card hole, a wire card is arranged on the outside of the sensor, the wire card is snap-connected with the card hole, an ABS isolation column screw sleeve is arranged on the outside of the wire card, and the sensor, wire card and ABS isolation column screw sleeve are sealed by a high-temperature resistant, heat-conductive, waterproof and insulating potting glue.

[0015] As a preferred implementation of the high-pressure solenoid valve capable of identifying the switching state provided by the present invention, the sensor is a Hall magnetic field induction sensor.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The high-pressure solenoid valve capable of identifying the switch state provided by the present invention realizes contactless and non-optical detection of the switch state of the high-pressure emergency cut-off solenoid valve by utilizing the principle of the change of the magnetic field enclosed by the iron pipe, effectively avoiding problems such as mechanical wear and optical pollution. At the same time, the technology has a strong anti-magnetic interference capability and can maintain high stability and reliability in harsh environments. In addition, by integrating the technology into the safety protection system, the overall safety performance of the system can be significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the scheme of the present invention, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are 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.

[0019] Figure 1 A schematic diagram of the overall structure of a high-pressure solenoid valve capable of identifying switch states provided by the present invention;

[0020] Figure 2 A schematic diagram of the structure of the screw hole and the clamp hole of the high-pressure solenoid valve capable of identifying the switch state provided by the present invention;

[0021] Figure 3 A schematic diagram of the structure of a high-pressure solenoid valve magnetic field change simulation component capable of identifying a switch state provided by the present invention;

[0022] Figure 4 A schematic diagram of the structure of a magnetic induction assembly of a high-pressure solenoid valve capable of identifying a switch state provided by the present invention;

[0023] Figure 5 This is the circuit diagram of the Hall magnetic field sensing sensor identifying the state of the high-voltage solenoid valve.

[0024] The markings in the figure are as follows:

[0025] 1. High-voltage solenoid valve; 2. Magnetic field change simulation component; 3. Magnetic induction component; 4. Screw hole; 5. Card hole; 6. Magnetic block; 7. Countersunk screw; 8. Sensor; 9. Wire card; 10. ABS isolation column screw sleeve. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 should fall within the scope of protection of the present invention.

[0027] As mentioned in the background technology, mechanical contact sensors are prone to wear and have a limited lifespan; optical sensors have high environmental requirements and are easily affected by pollution; and both have poor working stability in strong magnetic interference environments. The iron pipe encloses the magnetic field changes of the solenoid valve's switch state, and magnetic sensing technology is limited.

[0028] In order to solve this technical problem, the present invention provides a high-pressure solenoid valve capable of identifying a switch state, which is applied to the state identification of a high-pressure solenoid valve closed by an iron pipe.

[0029] Specifically, please refer to Figure 1 - Figure 2 , the high-pressure solenoid valves that can identify the switch status specifically include:

[0030] A high-pressure solenoid valve 1, wherein a magnetic field change simulation component 2 and a magnetic induction component 3 are respectively arranged on the outer side of the high-pressure solenoid valve 1;

[0031] The magnetic field change simulation component 2 is used to synchronously sense the change of the magnetic field inside the iron pipe during the switching process of the high-voltage solenoid valve 1;

[0032] The magnetic induction component 3 is used to sense the magnetic field change of the magnetic field simulation component 2 and convert the change into an electrical signal output;

[0033] A screw hole 4 is provided on the pull rod outside the iron pipe of the high-pressure solenoid valve 1, and the magnetic field change simulation component 2 corresponds to the position of the screw hole 4. A clamping hole 5 is provided on the outside of the high-pressure solenoid valve 1 and near the screw hole 4, and the magnetic induction component 3 corresponds to the position of the clamping hole 5.

[0034] The high-pressure solenoid valve capable of identifying the switch state provided by the present invention realizes contactless and non-optical detection of the switch state of the high-pressure emergency cut-off solenoid valve by utilizing the principle of the change of the magnetic field enclosed by the iron pipe, effectively avoiding problems such as mechanical wear and optical pollution. At the same time, the technology has a strong anti-magnetic interference capability and can maintain high stability and reliability in harsh environments. In addition, by integrating the technology into the safety protection system, the overall safety performance of the system can be significantly improved.

[0035] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0036] Please refer to Figure 1 - Figure 5 , a high-pressure solenoid valve capable of identifying a switch state, comprising:

[0037] A high-pressure solenoid valve 1, on the outside of which a magnetic field change simulation component 2 and a magnetic induction component 3 are respectively arranged; wherein the specific model of the high-pressure solenoid valve 1 in this embodiment is DRQF-1.6KYL111 or RQF-1.6KYL101;

[0038] The magnetic field change simulation component 2 is used to synchronously sense the change of the magnetic field inside the iron pipe during the switching process of the high-voltage solenoid valve 1;

[0039] The magnetic induction component 3 is used to sense the magnetic field change of the magnetic field simulation component 2 and convert the change into an electrical signal output;

[0040] A screw hole 4 is provided on the pull rod outside the iron pipe of the high-pressure solenoid valve 1, and the magnetic field change simulation component 2 corresponds to the position of the screw hole 4. A clamping hole 5 is provided on the outside of the high-pressure solenoid valve 1 and near the screw hole 4, and the magnetic induction component 3 corresponds to the position of the clamping hole 5.

[0041] Specifically, the magnetic field change simulation component 2 includes a magnetic block 6 and a countersunk screw 7. The position of the magnetic block 6 corresponds to the screw hole 4. The magnetic block 6 is fixedly connected to the screw hole 4 through the countersunk screw 7. The magnetic block 6 is attracted to the magnetic field of the contact surface of the pull rod outside the iron pipe of the high-pressure solenoid valve 1.

[0042] Specifically, the magnetic induction component 3 includes a sensor 8, the position of the sensor 8 corresponds to the position of the card hole 5, a wire card 9 is arranged on the outside of the sensor 8, the wire card 9 is buckled and connected with the card hole 5, an ABS isolation column screw sleeve 10 is arranged on the outside of the wire card 9, and the sensor 8, the wire card 9, and the ABS isolation column screw sleeve 10 are sealed by a high temperature resistant heat conductive waterproof insulating potting glue. In this embodiment, the sensor 8 is a Hall magnetic field induction sensor.

[0043] Through the above structural design:

[0044] 1. Design a specific magnetic field change simulation component 2: Installed on the external pull rod of the iron tube of the high-pressure solenoid valve 1, select a magnetic block 6, a countersunk circular strong magnetic magnet made of neodymium iron boron material, and its size is determined according to the actual product (Note: this embodiment selects a diameter of 15×5mm and its hole is 4-5mm). The size of the magnetic block 6 is mainly calculated and actually measured through the sensitivity of the sensor 8 and the position where it can be installed. Drill a screw hole 4 of about 2.5-5mm on the pull rod, and then use a countersunk screw 7 to fix and lock the magnetic block 6. The magnetic block 6 is attracted to the magnetic field of the contact surface of the pull rod of the high-pressure solenoid valve 1, so that the direction of the entire magnetic field is consistent. Otherwise, the internal magnetic field of the high-pressure solenoid valve 1 will be weakened. Although the high-pressure solenoid valve 1 can be closed, the effect will be worse. Such a magnetic induction component 3 is synchronized with the internal magnetic field change of the high-pressure solenoid valve 1 closed by the iron tube, and truly realizes the specific magnetic field change simulation component 2 to replace the magnetic field change of the high-pressure solenoid valve 1 after the iron tube is closed.

[0045] 2. Structural design of magnetic induction component 3: Magnetic field change simulation component 2 is externally fixed on the rod of high-voltage electromagnetic valve 1, and magnetic induction component 3 must be external, which is equal to being exposed. The method is to put sensor 8 (in this embodiment, Hall magnetic field induction sensor) into wire clip 9, and install ABS isolation column screw sleeve 10 with a size of 10-18mm on the outside, and then seal it with high-temperature resistant heat-conductive waterproof insulating potting glue to truly achieve three protections. Calculate and test the best position between potting sensor 8 and magnetic field change simulation component 2, and then fix and buckle wire clip 9 on potting magnetic induction component 3 to the card hole 5 of high-voltage electromagnetic valve 1. Note that the card hole 5 and the wire clip 9 on potting magnetic induction component 3 should be too tight to prevent air and water from passing through, so as to achieve three protections. Its functions are: ① It makes it possible to place the sensor externally; ② It achieves three protections: moisture-proof, mildew-proof, and salt spray-proof; ③ It makes it easy for sensor 8 to reach the best sensing position.

[0046] 3. Processing the sensed magnetic field change signal: that is, processing the on-off signal of the sensor 8 in response to the magnetic field change of the high-pressure solenoid valve 1, such as Figure 5 , the valve closed state will guide the first and second pins of the Hall magnetic field induction sensor to conduct, and the second pin OUT will have the voltage of VCC, which is filtered by a 103P-105P capacitor, and then transmitted to the ADC or IO of NB, 4G, and MCU by adding an RH2 resistor. The IO port uses internal pull-down, and the voltage of this port is measured to be VCC or high level, and it is converted to number 1. On the contrary, in the valve open state, the 1st and 2nd pins of the Hall magnetic field induction sensor are disconnected, and the ADC or IO detects low level, which is converted to number 0. It is obtained that: the valve is closed at high level 1, and the valve is open at low level 0. If the IO port measures not high level 1 but the original valve open state 0 after the valve closing command is issued, it is a high-voltage solenoid valve 1 failure, which can be used as a fault alarm.

Claims

1. A high-pressure solenoid valve capable of identifying a switch state, characterized in that: include: A high-pressure solenoid valve (1), wherein a magnetic field change simulation component (2) and a magnetic induction component (3) are respectively arranged on the outer side of the high-pressure solenoid valve (1); The magnetic field change simulation component (2) is used to synchronously sense the change of the magnetic field inside the iron pipe during the switching process of the high-voltage solenoid valve (1); The magnetic induction component (3) is used to sense the magnetic field change of the magnetic field simulation component (2) and convert the change into an electrical signal for output; A screw hole (4) is provided on the pull rod outside the iron pipe of the high-pressure solenoid valve (1), and the magnetic field change simulation component (2) corresponds to the position of the screw hole (4). A clamping hole (5) is provided on the outside of the high-pressure solenoid valve (1) and at a position near the screw hole (4), and the magnetic induction component (3) corresponds to the position of the clamping hole (5).

2. The high-pressure solenoid valve capable of identifying the switch state according to claim 1, characterized in that: The magnetic field change simulation component (2) comprises a magnetic block (6) and a countersunk screw (7); the position of the magnetic block (6) corresponds to that of the screw hole (4); the magnetic block (6) is fixedly connected to the screw hole (4) via the countersunk screw (7); and the magnetic block (6) is attracted to the magnetic field of the contact surface of the rod outside the iron pipe of the high-pressure solenoid valve (1).

3. The high-pressure solenoid valve capable of identifying the switch state according to claim 2, characterized in that: The magnetic induction component (3) comprises a sensor (8), the position of the sensor (8) corresponds to the position of the card hole (5), a wire clamp (9) is arranged on the outside of the sensor (8), the wire clamp (9) is snap-fitted with the card hole (5), an ABS isolation column screw sleeve (10) is arranged on the outside of the wire clamp (9), and the sensor (8), the wire clamp (9) and the ABS isolation column screw sleeve (10) are sealed by a high-temperature resistant, heat-conductive, waterproof and insulating potting glue.

4. The high-pressure solenoid valve capable of identifying the switch state according to claim 3, characterized in that: The sensor (8) is a Hall magnetic field induction sensor.

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