Valve position monitoring sensor for valve equipment and monitoring method thereof

Abstract

The present invention discloses a valve position monitoring sensor for valve equipment and a monitoring method thereof. The valve position monitoring method for valve equipment comprises step S1: when the valve equipment receives a first shut-off signal sent by a host computer, the moving component of the conducting sealing device is supported by the valve equipment so as to move from an initial position to a direction of a signal output device, and then the indicating component of the signal output device performs a first action after receiving the first signal conducted by the moving component. The valve position monitoring sensor for valve equipment disclosed by the present invention and the monitoring method thereof are installed on a solenoid valve and transmit the corresponding signal to the signal output device through the conducting sealing device when the solenoid valve is turned on and off, so that the real working state of the solenoid valve is transmitted to the host computer, and then it is judged whether the solenoid valve is normal when executing the execution signal sent by the host computer.

Description

Technical Field

[0001] The invention belongs to the technical field of solenoid valve position monitoring, and in particular relates to a valve position monitoring sensor for valve equipment and a valve position monitoring method for valve equipment. Background Art

[0002] Valve equipment such as solenoid valves, electric valves, and pneumatic control valves are used in various fields. For example, the gas solenoid valve, also known as the gas emergency shut-off valve, is suitable for two-position on-off switching of pipelines heated by city gas, liquefied petroleum gas, natural gas and other gases. It is widely used in gas heat setting in the textile and printing industries, kiln heating in the glass and light bulb industries, and gas heating automatic control systems in other industries.

[0003] The valve device is turned on and off by the signal given by the host computer, but the existing valve device cannot truly determine whether it executes the signal action normally during operation, that is, it cannot determine whether the valve device is truly turned on and off, and it is impossible to obtain the failure of the valve device in the first place, which poses certain safety hazards.

[0004] Therefore, further improvements are made to the above problems. Summary of the invention

[0005] The main purpose of the present invention is to provide a valve position monitoring sensor for valve equipment and a monitoring method thereof. The valve position monitoring sensor for valve equipment is installed on a solenoid valve and transmits the corresponding signal to a signal output device through a conduction sealing device when the solenoid valve (a type of valve equipment, as an example) is turned on and off, so that the actual working state of the solenoid valve is transmitted to the host computer, and then it is judged whether the solenoid valve is normal when executing the execution signal sent by the host computer. It has the advantages of simple use, ingenious force transmission, stable structure and good sealing.

[0006] To achieve the above objectives, the present invention provides a valve position monitoring method for a valve device, which monitors the switch state of the valve device through a valve position sensor for the valve device, comprising the following steps:

[0007] Step S1: When the valve device (taking the solenoid valve as an example) receives the first shut-off signal sent by the upper computer (i.e., the first conduction signal is not received, so that the action mechanism of the valve device (including the fixed iron core, the moving iron core and the valve, etc.) is in the initial position), the moving component of the conductive sealing device is supported by the valve device (the valve of the action mechanism is downward) so as to move from the initial position toward the signal output device, and then the indicating component of the signal output device receives the first signal transmitted by the moving component and performs the first action, thereby indicating the actual shut-off state of the current valve device, and the output component of the signal output device processes the received first signal and outputs the actual shut-off signal;

[0008] Step S2: When the valve device (taking the solenoid valve as an example) receives the first conduction signal sent by the upper computer (so that the action mechanism of the valve device (including the fixed iron core, the moving iron core and the valve, etc.) is actuated, the coil is energized to cooperate with the fixed iron core to generate magnetic force, thereby moving the moving iron core and attracting it, so that the moving component of the conductive sealing device is not supported by the valve device (the valve) and thus moves from the signal output device to the initial position direction, and then the indicating component of the signal output device receives the second signal transmitted by the moving component and performs a second action, thereby indicating the actual conduction state of the current valve device and the output component of the signal output device processes the received second signal and outputs an actual conduction signal.

[0009] As a further preferred technical solution of the above technical solution, step S1 is specifically implemented as follows:

[0010] Step S1.1: The conductive sealing device is installed on the valve device through the fixed component, and the movable component of the conductive sealing device is supported by the action mechanism of the valve device and then moves toward the indicating component of the signal output device, and the sealing component of the conductive sealing device performs sealing processing during the movement of the movable component;

[0011] Step S1.2: The moving component indicating the component is moved performs a first action after being subjected to force, and then the indicator sheet indicates the actual shut-off state of the current valve device, and the micro switch of the output component is subjected to force after the moving component indicates the first action, and then the actual shut-off signal is output through the wiring terminal connected to the circuit board.

[0012] As a further preferred technical solution of the above technical solution, step S1.1 is specifically implemented as follows:

[0013] Step S1.1.1: The mounting seat of the fixed component is installed on the valve device through an external thread structure, and when the action mechanism of the valve device presses against the sliding rod of the movable component, the sliding rod moves relative to the mounting seat toward the signal output device, and the first compression spring and the positioning sleeve sleeved on the sliding rod move in the same direction as the sliding rod in the mounting cavity of the mounting seat, so that the first compression spring is compressed and the positioning sleeve is blocked after moving to the gasket, thereby reacting on the sliding rod, so that the distance the sliding rod moves toward the signal output device is limited, preventing unlimited movement and thus protecting the signal output device (the positioning sleeve is also used to prevent the rubber membrane and the spring from contacting and rubbing during the movement of the entire movable component, thereby damaging the rubber membrane);

[0014] Step S1.1.2: During the movement of the sliding rod, the sealing assembly will seal and isolate the medium (including gas, etc.) coming from the valve device (since the valve of the valve device directly acts on the sliding rod, when the valve is opened, the medium will enter the interior of the mounting seat from the contact gap between the sliding rod and the mounting seat. If no sealing treatment is performed, leakage will occur). The outer ring structure of the rubber membrane of the sealing assembly is pushed upward by the sealing sleeve so that it is tightly attached to the top of the mounting cavity and the inner ring structure of the rubber membrane is sleeved on the sliding rod, so that the medium coming from the valve device is blocked by the sealing groove connecting the outer ring structure and the inner ring structure.

[0015] As a further preferred technical solution of the above technical solution, step S1.2 is specifically implemented as follows:

[0016] Step S1.2.1: The pressure block of the indicating assembly is acted upon by the sliding rod and moves a certain distance in the same direction (the second compression spring of the pressure block is compressed), so that the first paddle connected to the pressure block is subjected to force and rotates in the first direction (preferably to the right, with the first axis as the center), thereby driving the second paddle connected to the first paddle to rotate in the same direction (with the fourth axis as the center), and then driving the slider connected to the second paddle to move in the first direction, thereby converting the vertical force from the sliding rod into a lateral force, and finally making the indicating piece (marked with a color, which color can be observed by the observation window according to which direction it moves to, so as to know the current switching state of the valve device) installed on the slider move with the slider, thereby indicating the current actual shut-off state of the valve device;

[0017] Step S1.2.2: During the movement of the pressing block, the pressing block contacts the switch of the micro switch and is triggered, so that the micro switch outputs an actual shut-off signal through the wiring terminal connected to the circuit board.

[0018] As a further preferred technical solution of the above technical solution, step S2 is specifically implemented as the following steps:

[0019] Step S2.1: The conductive sealing device is installed on the valve device through the fixed component and the movable component of the conductive sealing device is not supported by the action mechanism of the valve device and moves in the opposite direction of the indicating component of the signal output device. The sealing component of the conductive sealing device performs sealing processing during the movement of the movable component;

[0020] Step S2.2: The indicating component performs a second action after the moving component that was moved over releases the force, and then the indicator sheet indicates the actual conduction state of the current valve device, and the microswitch of the output component performs the second action after the indicating component releases the force (the microswitch outputs a signal when pressed, and then outputs another signal when released, which represents the shutdown and conduction of the valve device), and then outputs the actual conduction signal through the wiring terminals connected to the circuit board.

[0021] As a further preferred technical solution of the above technical solution, step S2.1 is specifically implemented as the following steps:

[0022] Step S2.1.1: When the mounting seat of the fixed component is mounted on the valve device through the external thread structure and the actuating mechanism of the valve device does not support the slide rod of the movable component, the slide rod moves to the initial position in the opposite direction of the signal output device relative to the mounting seat due to the restoring force of the first compression spring;

[0023] Step S2.1.2: During the movement of the sliding rod, the sealing assembly will seal and isolate the medium (including gas, etc.) coming from the valve device (since the valve of the valve device directly acts on the sliding rod, when the valve is opened, the medium will enter the interior of the mounting seat from the contact gap between the sliding rod and the mounting seat. If no sealing treatment is performed, leakage will occur). The outer ring structure of the rubber membrane of the sealing assembly is pushed upward by the sealing sleeve so as to be tightly attached to the top of the mounting cavity and the inner ring structure of the rubber membrane is sleeved on the sliding rod, so that the medium coming from the valve device is blocked by the sealing groove connecting the outer ring structure and the inner ring structure.

[0024] As a further preferred technical solution of the above technical solution, step S2.2 is specifically implemented as the following steps:

[0025] Step S2.2.1: The pressure block of the indicating assembly returns to its initial position after the force is unloaded by the slide bar (restoring force of the second compression spring), so that the first paddle connected to the pressure block rotates in the second direction (preferably to the left, with the first axis as the center) after receiving the restoring force, thereby driving the second paddle connected to the first paddle to rotate in the same direction (with the fourth axis as the center), and then driving the slider connected to the second paddle to move in the second direction (return to the initial position), and finally making the indicating piece (marked with color, which color can be observed by the observation window according to which it is moved to, so as to know the current switch state of the valve device) installed on the slider move with the slider, thereby indicating the current actual conduction state of the valve device;

[0026] Step S2.2.2: during the movement of the pressing block, the switch of the micro switch is released, so that the micro switch outputs an actual conduction signal through the wiring terminal connected to the circuit board.

[0027] As a further preferred technical solution of the above technical solution, in step S1 and step S2:

[0028] The upper computer receives the actual shut-off signal outputted from the output component, and compares it with the first shut-off signal sent down to determine whether the actual shut-off signal is consistent with the first shut-off signal. If they are consistent, it indicates that the shut-off action of the valve device is normal and it is in the shut-off state. Otherwise, it outputs the first alarm signal.

[0029] The host computer receives the actual on-signal from the output component and compares it with the first on-signal sent down to determine whether the actual off-signal is consistent with the first on-signal. If they are consistent, it means that the valve device conduction action is normal and is in the on state, otherwise it outputs the second alarm signal.

[0030] As a further preferred technical solution of the above technical solution, before step S1, it also includes step S0: performing initialization adjustment:

[0031] The slide bar is provided with an adjusting unit. When the mounting seat is installed on the valve device in the closed state, the distance sensor located on the mounting seat determines whether the top end of the slide bar touches the actuating mechanism of the valve device, and transmits the output first judgment signal to the adjusting unit. Since the slide bar is subjected to the pressure of the actuating mechanism and touches the pressure block during the movement, the distance sensor located on the pressure block determines whether the current moving distance of the pressure block can satisfy the action of the indicator sheet and the micro switch, and transmits the output second judgment signal to the adjusting unit, so that the adjusting unit automatically adjusts the length of the slide bar to satisfy the fact that when the slide bar is subjected to the pressure of the actuating mechanism and moves to the lower limit of the distance restricted by the positioning sleeve, the pressure block is moved just enough to satisfy the action of the indicator sheet and the micro switch.

[0032] To achieve the above object, the present invention further provides a valve position sensor for a valve device, comprising a conductive sealing device and a signal output device, wherein:

[0033] When the valve device (taking the solenoid valve as an example) receives the first shut-off signal sent by the upper computer (i.e., the first conduction signal is not received, so that the action mechanism of the valve device (including the fixed iron core, the moving iron core and the valve, etc.) is in the initial position), the moving component of the conductive sealing device is supported by the valve device (the valve of the action mechanism is downward) so as to move from the initial position toward the signal output device, and then the indicating component of the signal output device receives the first signal transmitted by the moving component and performs the first action, thereby indicating the actual shut-off state of the current valve device, and the output component of the signal output device processes the received first signal and outputs the actual shut-off signal;

[0034] When the valve device (taking the solenoid valve as an example) receives the first conduction signal sent by the upper computer (so that the action mechanism of the valve device (including the fixed iron core, the moving iron core and the valve, etc.) is actuated, the coil is energized and cooperates with the fixed iron core to generate magnetic force, thereby moving the moving iron core and attracting it, so that the moving component of the conductive sealing device is not supported by the valve device (the valve) and thus moves from the signal output device to the initial position direction, and then the indicating component of the signal output device receives the second signal transmitted by the moving component and performs the second action, thereby indicating the actual conduction state of the current valve device and the output component of the signal output device processes the received second signal and outputs the actual conduction signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the installation of a valve position monitoring sensor for valve equipment and a monitoring method thereof according to the present invention.

[0036] Figure 2 It is a schematic diagram (sectional view) of the installation of the valve position monitoring sensor for valve equipment and the monitoring method thereof of the present invention.

[0037] Figure 3 It is an exploded diagram of a valve position monitoring sensor for valve equipment and a monitoring method thereof according to the present invention.

[0038] Figure 4 It is a structural schematic diagram of a valve position monitoring sensor for valve equipment and a conductive sealing device of a monitoring method thereof according to the present invention.

[0039] Figure 5 is along Figure 4 Cross-sectional view in the AA direction.

[0040] Figure 6 It is a structural schematic diagram of a valve position monitoring sensor for valve equipment and a conductive sealing device of a monitoring method thereof of the present invention (the mounting seat and the sealing sleeve are hidden).

[0041] Figure 7 It is a structural schematic diagram of a valve position monitoring sensor for valve equipment and a signal output device of a monitoring method thereof according to the present invention.

[0042] Figure 8 It is an exploded view of a valve position monitoring sensor for valve equipment and a signal output device of a monitoring method thereof according to the present invention.

[0043] Fig. 9 yes Figure 8 A partial enlarged view of area A.

[0044] The reference numerals include: 1, solenoid valve; 2, conduction sealing device; 3, signal output device; 4, main body; 41, mounting cover; 42, observation window; 43, fine adjustment device; 100, moving component; 110, slide rod; 111, second external thread structure; 120, first compression spring; 130, positioning sleeve; 200, fixing component; 210, mounting seat; 211, mounting cavity; 212, external thread structure; 220, sealing sleeve; 230, gasket; 240, retaining ring; 300, sealing component; 310, rubber membrane; 311, outer ring structure; 312, inner ring structure; 313, sealing groove; 320, first mounting ring; 330, second mounting ring; 400, indicating component; 4 10. First bracket; 411. Baffle mounting hole; 412. First fixed shaft mounting end; 413. Second fixed shaft mounting end; 420. Second bracket; 430. Conducting structure; 431. Baffle; 432. First paddle; 4321. First shaft; 4322. Second shaft; 4323. Third shaft; 433. Second paddle; 4331. Second mounting hole; 4332. Fourth shaft; 4333. Fifth shaft; 434. Fixed shaft; 435. Slider; 4351. Third mounting hole; 4352. Guide groove; 440. Press block; 442. Second compression spring; 450. Indicator sheet; 500. Output assembly; 510. Micro switch; 520. Circuit board; 530. Wiring terminal. DETAILED DESCRIPTION

[0045] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0046] In the preferred embodiment of the present invention, those skilled in the art should note that the solenoid valve and host computer involved in the present invention can be regarded as prior art.

[0047] Preferred embodiments.

[0048] The valve device in this embodiment is the same concept as the solenoid valve 1 .

[0049] The present invention discloses a valve position monitoring method for valve equipment, which monitors the switch state of the valve equipment through a valve position sensor for the valve equipment, comprising the following steps:

[0050] Step S1: When the valve device (taking the solenoid valve as an example) receives the first shut-off signal sent by the upper computer (i.e., the first conduction signal is not received, so that the action mechanism of the valve device (including the fixed iron core, the moving iron core and the valve, etc.) is in the initial position), the moving component 100 of the conductive sealing device 2 is supported by the valve device (the valve of the action mechanism is downward) so as to move from the initial position toward the signal output device, and then the indicating component 400 of the signal output device 3 performs the first action after receiving the first signal conducted by the moving component 100, thereby indicating the actual shut-off state of the current valve device and the output component 500 of the signal output device 3 processes the received first signal and outputs the actual shut-off signal;

[0051] Step S2: When the valve device (taking the solenoid valve as an example) receives the first conduction signal sent by the upper computer (so that the action mechanism of the valve device (including the fixed iron core, the moving iron core and the valve, etc.) is actuated, the coil is energized to cooperate with the fixed iron core to generate magnetic force, thereby moving the moving iron core and attracting it, so that the moving component 100 of the conductive sealing device 2 is not supported by the valve device (the valve) and thus moves from the signal output device 3 to the initial position direction, and then the indicating component 400 of the signal output device 3 receives the second signal transmitted by the moving component 100 and performs a second action, thereby indicating the actual conduction state of the current valve device and the output component 500 of the signal output device 3 processes the received second signal and outputs an actual conduction signal.

[0052] Specifically, step S1 is implemented as follows:

[0053] Step S1.1: The conductive sealing device is installed on the valve device through the fixed component, and the movable component of the conductive sealing device is supported by the action mechanism of the valve device and then moves toward the indicating component of the signal output device, and the sealing component of the conductive sealing device performs sealing processing during the movement of the movable component;

[0054] Step S1.2: The moving component indicating the component is moved performs a first action after being subjected to force, and then the indicator sheet indicates the actual shut-off state of the current valve device, and the micro switch of the output component is subjected to force after the moving component indicates the first action, and then the actual shut-off signal is output through the wiring terminal connected to the circuit board.

[0055] More specifically, step S1.1 is implemented as follows:

[0056] Step S1.1.1: The mounting seat of the fixed component is installed on the valve device through an external thread structure, and when the action mechanism of the valve device presses against the sliding rod of the movable component, the sliding rod moves relative to the mounting seat toward the signal output device, and the first compression spring and the positioning sleeve sleeved on the sliding rod move in the same direction as the sliding rod in the mounting cavity of the mounting seat, so that the first compression spring is compressed and the positioning sleeve is blocked after moving to the gasket, thereby reacting on the sliding rod, so that the distance the sliding rod moves toward the signal output device is limited, preventing unlimited movement and thus protecting the signal output device (the positioning sleeve is also used to prevent the rubber membrane and the spring from contacting and rubbing during the movement of the entire movable component, thereby damaging the rubber membrane);

[0057] Step S1.1.2: During the movement of the sliding rod, the sealing assembly will seal and isolate the medium (including gas, etc.) coming from the valve device (since the valve of the valve device directly acts on the sliding rod, when the valve is opened, the medium will enter the interior of the mounting seat from the contact gap between the sliding rod and the mounting seat. If no sealing treatment is performed, leakage will occur). The outer ring structure of the rubber membrane of the sealing assembly is pushed upward by the sealing sleeve so that it is tightly attached to the top of the mounting cavity and the inner ring structure of the rubber membrane is sleeved on the sliding rod, so that the medium coming from the valve device is blocked by the sealing groove connecting the outer ring structure and the inner ring structure.

[0058] Furthermore, step S1.2 is specifically implemented as the following steps:

[0059] Step S1.2.1: The pressure block of the indicating assembly is acted upon by the sliding rod and moves a certain distance in the same direction (the second compression spring of the pressure block is compressed), so that the first paddle connected to the pressure block is subjected to force and rotates in the first direction (preferably to the right, with the first axis as the center), thereby driving the second paddle connected to the first paddle to rotate in the same direction (with the fourth axis as the center), and then driving the slider connected to the second paddle to move in the first direction, thereby converting the vertical force from the sliding rod into a lateral force, and finally making the indicating piece (marked with a color, which color can be observed by the observation window according to which direction it moves to, so as to know the current switching state of the valve device) installed on the slider move with the slider, thereby indicating the current actual shut-off state of the valve device;

[0060] Step S1.2.2: During the movement of the pressing block, the pressing block contacts the switch of the micro switch and is triggered, so that the micro switch outputs an actual shut-off signal through the wiring terminal connected to the circuit board.

[0061] Furthermore, step S2 is specifically implemented as the following steps:

[0062] Step S2.1: The conductive sealing device is installed on the valve device through the fixed component and the movable component of the conductive sealing device is not supported by the action mechanism of the valve device and moves in the opposite direction of the indicating component of the signal output device. The sealing component of the conductive sealing device performs sealing processing during the movement of the movable component;

[0063] Step S2.2: The indicating component performs a second action after the moving component that was moved over releases the force, and then the indicator sheet indicates the actual conduction state of the current valve device, and the microswitch of the output component performs the second action after the indicating component releases the force (the microswitch outputs a signal when pressed, and then outputs another signal when released, which represents the shutdown and conduction of the valve device), and then outputs the actual conduction signal through the wiring terminals connected to the circuit board.

[0064] Preferably, step S2.1 is specifically implemented as the following steps:

[0065] Step S2.1.1: When the mounting seat of the fixed component is mounted on the valve device through the external thread structure and the actuating mechanism of the valve device does not support the slide rod of the movable component, the slide rod moves to the initial position in the opposite direction of the signal output device relative to the mounting seat due to the restoring force of the first compression spring;

[0066] Step S2.1.2: During the movement of the sliding rod, the sealing assembly will seal and isolate the medium (including gas, etc.) coming from the valve device (since the valve of the valve device directly acts on the sliding rod, when the valve is opened, the medium will enter the interior of the mounting seat from the contact gap between the sliding rod and the mounting seat. If no sealing treatment is performed, leakage will occur). The outer ring structure of the rubber membrane of the sealing assembly is pushed upward by the sealing sleeve so as to be tightly attached to the top of the mounting cavity and the inner ring structure of the rubber membrane is sleeved on the sliding rod, so that the medium coming from the valve device is blocked by the sealing groove connecting the outer ring structure and the inner ring structure.

[0067] Preferably, step S2.2 is specifically implemented as the following steps:

[0068] Step S2.2.1: The pressure block of the indicating assembly returns to its initial position after the force is unloaded by the slide bar (restoring force of the second compression spring), so that the first paddle connected to the pressure block rotates in the second direction (preferably to the left, with the first axis as the center) after receiving the restoring force, thereby driving the second paddle connected to the first paddle to rotate in the same direction (with the fourth axis as the center), and then driving the slider connected to the second paddle to move in the second direction (return to the initial position), and finally making the indicating piece (marked with color, which color can be observed by the observation window according to which it is moved to, so as to know the current switch state of the valve device) installed on the slider move with the slider, thereby indicating the current actual conduction state of the valve device;

[0069] Step S2.2.2: during the movement of the pressing block, the switch of the micro switch is released, so that the micro switch outputs an actual conduction signal through the wiring terminal connected to the circuit board.

[0070] Preferably, in step S1 and step S2:

[0071] The upper computer receives the actual shut-off signal outputted from the output component, and compares it with the first shut-off signal sent down to determine whether the actual shut-off signal is consistent with the first shut-off signal. If they are consistent, it indicates that the shut-off action of the valve device is normal and it is in the shut-off state. Otherwise, it outputs the first alarm signal.

[0072] The host computer receives the actual on-signal from the output component and compares it with the first on-signal sent down to determine whether the actual off-signal is consistent with the first on-signal. If they are consistent, it means that the valve device conduction action is normal and is in the on state, otherwise it outputs the second alarm signal.

[0073] Preferably, before step S1, step S0 is also included: performing initialization adjustment:

[0074] The slide bar is provided with an adjusting unit. When the mounting seat is installed on the valve device in the closed state, the distance sensor located on the mounting seat determines whether the top end of the slide bar touches the actuating mechanism of the valve device, and transmits the output first judgment signal to the adjusting unit. Since the slide bar is subjected to the pressure of the actuating mechanism and touches the pressure block during the movement, the distance sensor located on the pressure block determines whether the current moving distance of the pressure block can satisfy the action of the indicator sheet and the micro switch, and transmits the output second judgment signal to the adjusting unit, so that the adjusting unit automatically adjusts the length of the slide bar to satisfy the fact that when the slide bar is subjected to the pressure of the actuating mechanism and moves to the lower limit of the distance restricted by the positioning sleeve, the pressure block is moved just enough to satisfy the action of the indicator sheet and the micro switch.

[0075] The present invention also discloses a valve position sensor for valve equipment, comprising a conductive sealing device and a signal output device, wherein:

[0076] When the valve device (taking the solenoid valve as an example) receives the first shut-off signal sent by the upper computer (i.e., the first conduction signal is not received, so that the action mechanism of the valve device (including the fixed iron core, the moving iron core and the valve, etc.) is in the initial position), the moving component of the conductive sealing device is supported by the valve device (the valve of the action mechanism is downward) so as to move from the initial position toward the signal output device, and then the indicating component of the signal output device receives the first signal transmitted by the moving component and performs the first action, thereby indicating the actual shut-off state of the current valve device, and the output component of the signal output device processes the received first signal and outputs the actual shut-off signal;

[0077] When the valve device (taking the solenoid valve as an example) receives the first conduction signal sent by the upper computer (so that the action mechanism of the valve device (including the fixed iron core, the moving iron core and the valve, etc.) is actuated, the coil is energized and cooperates with the fixed iron core to generate magnetic force, thereby moving the moving iron core and attracting it, so that the moving component of the conductive sealing device is not supported by the valve device (the valve) and thus moves from the signal output device to the initial position direction, and then the indicating component of the signal output device receives the second signal transmitted by the moving component and performs the second action, thereby indicating the actual conduction state of the current valve device and the output component of the signal output device processes the received second signal and outputs the actual conduction signal.

[0078] A valve position monitoring sensor for a valve device, which is installed on the valve device and used to monitor the switch of the valve device, comprises a main body 4, a conductive sealing device 2 and a signal output device 3, wherein the conductive sealing device 2 and the signal output device 3 are both installed on the main body 4, wherein:

[0079] The conductive sealing device comprises a moving component 100, a fixed component 200 and a sealing component 300, wherein:

[0080] The fixing assembly 200 includes a mounting seat 210 and a sealing sleeve 220. The mounting seat 210 is provided with a mounting cavity 211 and the sealing sleeve 220 is built in the mounting cavity 211. One end of the mounting seat 210 is mounted on the solenoid valve 1 through an external thread structure 212.

[0081] The moving assembly 100 includes a slide bar 110, a first compression spring 120 (built into the installation cavity) and a positioning sleeve 130 (built into the installation cavity), the slide bar 110 passes through the installation seat 210 and one end of the slide bar 110 close to the external thread structure 212 of the installation seat 210 is built into the solenoid valve 1, the first compression spring 120 is sleeved on the slide bar 110 (the end away from the external thread structure of the installation seat), the positioning sleeve 130 is sleeved on the slide bar 110 and the positioning sleeve 130 surrounds the first compression spring 120;

[0082] The sealing assembly 300 includes a rubber film 310 built into the installation cavity 211 and the rubber mold 310 is sleeved on the sliding rod 110. The rubber mold 310 includes an outer ring structure 311 and an inner ring structure 312. A sealing groove 313 is formed between the outer ring structure 311 and the inner ring structure 312.

[0083] The signal output device comprises an indication component 400 and an output component 500, wherein:

[0084] The indicating assembly 400 includes a first bracket 410, a second bracket 420, a conductive structure 430, a pressing block 440 and an indicating sheet 450. The first bracket 410 and the second bracket 420 are fixedly connected (preferably by snap-fitting) and the pressing block 440 is installed between the first bracket 410 and the second bracket 420. The conductive structure 430 is installed on the first bracket 410 and the indicating sheet 450 is installed on the conductive structure 430.

[0085] The output component 500 includes a micro switch 510, a circuit board 520 and a wiring terminal 530. The circuit board 520 is installed on the indication component 400. The micro switch 510 and the wiring terminal 530 are both installed on the circuit board 520. The micro switch 510 is installed between the first bracket 410 and the second bracket 420 and the micro switch 510 is located below the pressing block 440. The wiring terminal 430 is external to the indication component 400.

[0086] Specifically, the outer ring structure 311 is installed on the upper end of the installation cavity 211 and the upper end of the sealing sleeve 220 abuts against the outer ring structure 311 , and the inner ring structure 312 is sleeved on the sliding rod 110 .

[0087] More specifically, the fixing assembly 200 further includes a gasket 230 and a retaining ring 240, wherein:

[0088] The gasket 230 and the retaining ring 240 are both installed at the lower end of the installation cavity 211 and the lower ends of the first compression spring 120 and the sealing sleeve 220 are both close to the gasket 230 . The retaining ring 240 is installed at one end of the gasket 230 away from the first compression spring 120 .

[0089] Furthermore, the end of the slide rod 110 close to the solenoid valve 1 is provided with a second external thread structure 111 (a connecting rod of a certain length can be added to adapt to the distance from the slide rod to the valve of the solenoid valve, thereby adapting to solenoid valves of different specifications and sizes).

[0090] Preferably, the sealing assembly 300 further includes a first mounting ring 320 and a second mounting ring 330 , wherein the first mounting ring 320 and the second mounting ring 330 are both sleeved on the mounting seat 210 and the first mounting ring 320 is located above the second mounting ring 330 .

[0091] Specifically, the conductive structure 430 includes a baffle 431, a first paddle 432, a second paddle 433, a fixed shaft 434 and a slider 435, wherein:

[0092] The baffle 431 is fixedly mounted on the first bracket 410, the pressing block 440 is provided with a first mounting hole, and the first paddle 432 is located on a side of the baffle 431 away from the pressing block 440, the first paddle 432 is provided with a first axis 4321, a second axis 4322 and a third axis 4323, the first axis 4321 passes through the first mounting hole (so that the first paddle is installed on the pressing block and moves with the movement of the pressing block), and the second axis 4322 is installed on the baffle 431 (the baffle is provided with a mounting hole);

[0093] The second paddle 433 is located at a side of the first paddle 432 away from the baffle 431. The second paddle 433 is provided with a second mounting hole 4331, a fourth shaft 4332 and a fifth shaft 4333. The third shaft 4323 is installed in the second mounting hole 4331. The fourth shaft 4332 is installed in the first bracket 410 (a mounting hole is provided so that the fourth shaft rotates but does not move).

[0094] The slider 435 is located on the side of the second paddle 433 away from the first paddle 432, and the slider 435 is provided with a third mounting hole 4351 and a guide groove 4352. The fifth shaft 4333 is installed in the third mounting hole 4351, the fixed shaft 434 is installed in the first bracket 410 and the slider 434 is installed in the fixed shaft 434 through the guide groove 4352, and the indicator sheet 450 is fixedly installed on the side of the slider 435 away from the second paddle 434.

[0095] More specifically, the first bracket 410 is provided with a baffle mounting hole 411 , and the baffle 431 is mounted in the baffle mounting hole 411 by screws.

[0096] Furthermore, the first bracket 410 is provided with a first fixed shaft mounting end 412 and a second fixed shaft mounting end 413, the fixed shaft 434 passes through the guide groove 4352, one end of the fixed shaft 434 is mounted on the first fixed shaft mounting end 412 and the other end of the fixed shaft 434 is mounted on the second fixed shaft mounting end 413.

[0097] Furthermore, the pressing block 440 is installed with a second pressing spring 442 .

[0098] Preferably, if Figure 3 As shown, the main body 4 further includes a mounting cover 41, and the mounting cover 41 is provided with an observation window 42 for observing the color indicated by the indicator sheet, so as to determine the switch state of the electromagnetic valve currently monitored.

[0099] Preferably, the main body also includes a fine-tuning device 43, and the fine-tuning device 43 is used to adjust the micro switch. Because sometimes when the present invention is installed on the solenoid valve, the distance may not be enough to activate the micro switch when it is closed, so the height of the micro switch is adjusted by the fine-tuning device for correction.

[0100] The principle of the present invention is:

[0101] For conductive sealing devices, such as Figure 4-Figure 6 :

[0102] When the solenoid valve does not receive the conduction signal from the host computer (i.e., receives the shutdown signal), the solenoid valve is not powered on at this time, so that the moving iron core of the solenoid valve does not move upward, and the valve does not open (the relevant working principle of the solenoid valve can refer to the invention patent with the authorization announcement number: CN111075984B), and then the valve presses the slide bar, so that the slide bar slides downward relative to the mounting seat, the first compression spring is pressed downward, and then the signal output device installed under the slide bar receives the downward force of the slide bar (including a micro switch, a circuit board and a wiring terminal, the micro switch and the wiring terminal are both installed on the circuit board, and the downward movement of the slide bar will cause the switch of the micro switch to be pressed downward, thereby outputting a shutdown signal at the wiring terminal), and then outputs a shutdown signal and can be transmitted to the host computer, and then the host computer determines whether the received shutdown signal is consistent with the shutdown signal given to the solenoid valve at this time. If they are consistent, it means that the solenoid valve is normal and has no faults and is in the shutdown state. If they are inconsistent, it means that the solenoid valve has generated a fault and has not performed the shutdown action;

[0103] When the solenoid valve receives the conduction signal from the upper computer, the solenoid valve is powered on at this time, so that the moving iron core of the solenoid valve moves upward, and then the valve moves upward to open, and then the valve will not press the slide rod, and the slide rod slides upward due to the reset force of the first compression spring, so that the signal output device installed under the slide rod does not receive the downward force of the slide rod (the upward movement of the slide rod will relax the switch of the micro switch, thereby outputting a conduction signal at the wiring terminal), and then outputs a conduction signal and can be transmitted to the upper computer, and then the upper computer determines whether the received conduction signal is consistent with the conduction signal given to the solenoid valve at this time. If they are consistent, it means that the solenoid valve is normal and has no faults and is in a conduction state. If they are inconsistent, it means that the solenoid valve has a fault and has not performed the conduction action;

[0104] For the sealing assembly, since the slide bar needs to slide, there will be a certain gap, so that the gas will enter the mounting seat through the contact end of the slide and the mounting seat. If the mounting seat is not sealed, the gas will enter from the upper end of the mounting seat and output from the lower end, thereby causing leakage. For the rubber membrane, when the gas enters the mounting seat, it will enter the sealing groove. Since the outer ring structure and the inner ring structure both block the gas (the outer ring structure is subjected to an upward force from the sealing sleeve, so that the outer ring structure is pressed against the top of the mounting cavity, the sealing sleeve is subjected to an upward force from the gasket and the retaining ring, and is set when installed on the mounting seat, and the inner ring structure is sleeved on the slide bar to form a block), it cannot enter the mounting cavity and then seal. The first mounting ring is installed at the external thread structure of the mounting seat, and is used for tightening and sealing when the mounting seat is connected to the solenoid valve, and the second mounting ring is used for tightening and sealing when the mounting seat is connected to the signal output device;

[0105] The positioning sleeve, on the one hand, prevents the rubber membrane from rubbing against the spring, thereby causing damage to components and affecting their service life. On the other hand, it limits the slide bar and prevents it from going too low. This is because the positioning sleeve moves downward when the slide bar slides downward. When the lower end of the positioning sleeve hits the gasket, it cannot move further downward, which in turn restricts the slide bar from moving downward, so that the distance the slide bar slides downward is the distance from the positioning sleeve to the gasket. The sliding distance is limited to give the signal output device one. If there is no limit, the signal output device will be damaged to a certain extent.

[0106] For signal output devices, such as Figure 7-Figure 9 :

[0107] When the solenoid valve does not receive the on-signal from the upper computer (i.e., receives the off-signal), the solenoid valve is not powered on, so that the moving iron core of the solenoid valve does not move upward, and the valve does not open (the relevant working principle of the solenoid valve can refer to the invention patent with the authorization announcement number: CN111075984B), and then the valve presses the sliding rod of the conductive sealing device to make the sliding rod move downward, and then pushes the pressure block to move downward (relative to the first bracket and the second bracket). When the pressure block moves downward (the second compression spring is compressed), the first axis of the first paddle is installed in the semantic mounting hole of the pressure block, so the first axis moves downward, and the second axis of the first paddle is installed on the baffle. Since the baffle is fixed to the first bracket and does not move, the part of the first paddle with the third axis moves from left to right, and the third axis is installed The fourth axis of the second paddle is installed on the first bracket without displacement, so in the process of the first paddle moving from left to right, the entire second paddle moves from left to right with the fourth axis as the center, and the fifth axis of the second paddle is installed on the third mounting hole of the slider. Therefore, the slider is driven by the fifth axis to move from left to right, and then the vertical movement of the pressing block downward is converted into the lateral movement of the slider. In order to make the slider slide more stably, a fixed axis is installed to make the slider slide along the fixed axis so that it will not loosen. An indicator sheet is fixed on the side of the slider away from the second paddle, and then the indicator sheet follows the rightward movement of the slider (the color can be marked on the indicator sheet, and the white color can be observed in the observation window when it moves to the right), so as to know the current off state of the solenoid valve;

[0108] When the pressing block moves downward, it will touch the switch of the micro switch located below (the micro switch is pressed at this time), so that the micro switch outputs a shutdown signal through the wiring terminal, which can be transmitted to the host computer. Then the host computer determines whether the received shutdown signal is consistent with the shutdown signal given to the solenoid valve at this time. If they are consistent, it means that the solenoid valve is normal and has no faults and is in the shutdown state. If they are inconsistent, it means that the solenoid valve has a fault and does not perform the shutdown action;

[0109] When the solenoid valve receives the conduction signal from the upper computer, the principle is the same, and the reset force of the second compression spring causes the pressure block to move upward, and then a series of forces are transmitted through the transmission structure, and finally the indicator piece on the slider moves to the left (red is observed in the observation window when moving to the left);

[0110] When the pressure block moves upward, the pressure block will release the switch of the micro switch located below (the micro switch is released at this time), and then the micro switch will output a conduction signal through the wiring terminal, which can be transmitted to the host computer. Then the host computer determines whether the received conduction signal is consistent with the conduction signal given to the solenoid valve at this time. If they are consistent, it means that the solenoid valve is normal and has no faults and is in the conduction state. If they are inconsistent, it means that the solenoid valve has generated a fault and the conduction action is not performed.

[0111] It is worth mentioning that the present invention is applicable to valve equipment such as solenoid valves, electric valves, and pneumatic control valves.

[0112] It is worth mentioning that the technical features such as the solenoid valve and the host computer involved in the patent application of this invention should be regarded as the prior art. The specific structure, working principle and possible control method and spatial layout method of these technical features can be selected by conventional methods in the field, and should not be regarded as the inventive point of the patent of this invention. The patent of this invention will not be further elaborated.

[0113] For those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A valve position monitoring method for a valve device, wherein a valve position sensor for the valve device is used to monitor the switch state of the valve device, characterized in that: The following steps are involved: Step S1: When the valve device receives the first shut-off signal sent by the upper computer, the moving component of the conductive sealing device is supported by the valve device and moves from the initial position to the direction of the signal output device, and then the indicating component of the signal output device performs a first action after receiving the first signal transmitted by the moving component, thereby indicating the actual shut-off state of the current valve device, and the output component of the signal output device processes the received first signal and outputs an actual shut-off signal; Step S1 is specifically implemented as follows: Step S1.1: The conductive sealing device is installed on the valve device through the fixed component, and the movable component of the conductive sealing device is supported by the action mechanism of the valve device and then moves toward the indicating component of the signal output device, and the sealing component of the conductive sealing device performs sealing processing during the movement of the movable component; Step S1.2: The indicating component is subjected to a force after the moving component is moved over, and then the indicating piece indicates the actual shut-off state of the current valve device, and the micro switch of the output component is subjected to a force after the indicating component performs the first action, and then the actual shut-off signal is output through the wiring terminal connected to the circuit board; Step S1.2 is specifically implemented as follows: Step S1.2.1: The pressure block of the indicating assembly is acted upon by the slide bar and moves a certain distance in the same direction, so that the first paddle connected to the pressure block rotates in the first direction after being subjected to force, thereby driving the second paddle connected to the first paddle to rotate in the same direction, and then driving the slider connected to the second paddle to move in the first direction, thereby converting the vertical force from the slide bar into a lateral force, and finally causing the indicating piece installed on the slider to move with the slider, thereby indicating the current actual shut-off state of the valve device; Step S1.2.2: During the movement of the pressing block, the pressing block contacts the switch of the micro switch and is triggered, so that the micro switch outputs an actual shut-off signal through the wiring terminal connected to the circuit board; Step S2: When the valve device receives the first conduction signal sent by the upper computer, the moving component of the conductive sealing device is not supported by the valve device and moves from the signal output device to the initial position direction. Then, the indicating component of the signal output device receives the second signal transmitted by the moving component and performs a second action, thereby indicating the actual conduction state of the current valve device and the output component of the signal output device processes the received second signal and outputs the actual conduction signal.

2. A valve position monitoring method for valve equipment according to claim 1, characterized in that: Step S1.1 is specifically implemented as follows: Step S1.1.1: The mounting seat of the fixed component is mounted on the valve device through an external thread structure, and when the action mechanism of the valve device presses against the slide bar of the movable component, the slide bar moves relative to the mounting seat toward the signal output device, and the first compression spring and the positioning sleeve sleeved on the slide bar move in the same direction as the slide bar in the mounting cavity of the mounting seat, so that the first compression spring is compressed and the positioning sleeve is blocked after moving to the gasket, thereby reacting on the slide bar, so that the distance the slide bar moves toward the signal output device is limited, thereby preventing unlimited movement and protecting the signal output device; Step S1.1.2: During the movement of the sliding rod, the sealing assembly will seal and isolate the medium coming from the valve device. The outer ring structure of the rubber membrane of the sealing assembly is pushed upward by the sealing sleeve so as to be tightly attached to the top of the installation cavity and the inner ring structure of the rubber membrane is sleeved on the sliding rod. As a result, the medium coming from the valve device is blocked by the sealing groove connecting the outer ring structure and the inner ring structure.

3. A valve position monitoring method for valve equipment according to any one of claims 1-2, characterized in that: Step S2 is specifically implemented as follows: Step S2.1: The conductive sealing device is installed on the valve device through the fixed component and the movable component of the conductive sealing device is not supported by the action mechanism of the valve device and moves in the opposite direction of the indicating component of the signal output device. The sealing component of the conductive sealing device performs sealing processing during the movement of the movable component; Step S2.2: The indicating component performs a second action after the moving component that was moved over releases the force, and then the indicating piece indicates the actual conduction state of the current valve device, and the micro switch of the output component is relieved of the force after the indicating component performs the second action, and then the actual conduction signal is output through the wiring terminal connected to the circuit board.

4. A valve position monitoring method for valve equipment according to claim 3, characterized in that: Step S2.1 is specifically implemented as follows: Step S2.1.1: When the mounting seat of the fixed component is mounted on the valve device through the external thread structure and the actuating mechanism of the valve device does not support the slide rod of the movable component, the slide rod moves to the initial position in the opposite direction of the signal output device relative to the mounting seat due to the restoring force of the first compression spring; Step S2.1.2: During the movement of the sliding rod, the sealing assembly will seal and isolate the medium coming from the valve device. The outer ring structure of the rubber membrane of the sealing assembly is pushed upward by the sealing sleeve so as to be tightly attached to the top of the installation cavity and the inner ring structure of the rubber membrane is sleeved on the sliding rod, so that the medium coming from the valve device is blocked by the sealing groove connecting the outer ring structure and the inner ring structure.

5. A valve position monitoring method for valve equipment according to claim 4, characterized in that: Step S2.2 is specifically implemented as follows: Step S2.2.1: The pressure block of the indicating assembly is restored to the initial position after the force is unloaded by the slide rod, so that the first paddle connected to the pressure block is rotated in the second direction after receiving the restoring force, thereby driving the second paddle connected to the first paddle to rotate in the same direction, and then driving the slider connected to the second paddle to move in the second direction, and finally making the indicating piece installed on the slider move with the slider, thereby indicating the current actual conduction state of the valve device; Step S2.2.2: during the movement of the pressing block, the switch of the micro switch is released, so that the micro switch outputs an actual conduction signal through the wiring terminal connected to the circuit board.

6. A valve position monitoring method for valve equipment according to claim 5, characterized in that: In step S1 and step S2: The upper computer receives the actual shut-off signal outputted from the output component, and compares it with the first shut-off signal sent down to determine whether the actual shut-off signal is consistent with the first shut-off signal. If they are consistent, it indicates that the shut-off action of the valve device is normal and it is in the shut-off state. Otherwise, it outputs the first alarm signal. The host computer receives the actual on-signal from the output component and compares it with the first on-signal sent down to determine whether the actual off-signal is consistent with the first on-signal. If they are consistent, it means that the valve device conduction action is normal and is in the on state, otherwise it outputs the second alarm signal.

7. A valve position monitoring method for valve equipment according to claim 6, characterized in that: Before step S1, step S0 is also included: initialization adjustment: The slide bar is provided with an adjusting unit. When the mounting seat is installed on the valve device in the closed state, the distance sensor located on the mounting seat determines whether the top end of the slide bar touches the actuating mechanism of the valve device, and transmits the output first judgment signal to the adjusting unit. Since the slide bar is subjected to the pressure of the actuating mechanism and touches the pressure block during the movement, the distance sensor located on the pressure block determines whether the current moving distance of the pressure block can satisfy the action of the indicator sheet and the micro switch, and transmits the output second judgment signal to the adjusting unit, so that the adjusting unit automatically adjusts the length of the slide bar to satisfy the fact that when the slide bar is subjected to the pressure of the actuating mechanism and moves to the lower limit of the distance restricted by the positioning sleeve, the pressure block is moved just enough to satisfy the action of the indicator sheet and the micro switch.

8. A valve position sensor for a valve device, characterized in that: A valve position monitoring method for a valve device as claimed in any one of claims 1 to 7, comprising a conductive sealing device and a signal output device, wherein: When the valve device receives the first shut-off signal sent by the upper computer, the moving component of the conductive sealing device is supported by the valve device and moves from the initial position to the direction of the signal output device, and then the indicating component of the signal output device performs a first action after receiving the first signal transmitted by the moving component, thereby indicating the actual shut-off state of the current valve device, and the output component of the signal output device processes the received first signal and outputs the actual shut-off signal; When the valve device receives the first conduction signal sent by the upper computer, the moving component of the conductive sealing device is not supported by the valve device and moves from the signal output device to the initial position direction. Then, the indicating component of the signal output device receives the second signal transmitted by the moving component and performs a second action, thereby indicating the actual conduction state of the current valve device and the output component of the signal output device processes the received second signal and outputs the actual conduction signal.

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