Remote directional control valve with leakage monitoring function

Abstract

The invention discloses a remote directional control valve with a leakage monitoring function, and relates to the technical field of remote directional control valves.The remote directional control valve with the leakage monitoring function comprises a valve body and a valve element, a supporting frame is installed on the valve body through bolts, and a circular rail is installed at the top of the supporting frame; two sliding seats are symmetrically and slidably mounted on the circular track, guide rails are mounted on the two sliding seats, moving seats are slidably mounted on the guide rails, electric telescopic rods are mounted at the bottoms of the moving seats, and monitors are mounted on the electric telescopic rods. The movable base can drive the electric telescopic rod to transversely move, then the electric telescopic rod is started, the monitor can be driven to be attached to the gap between the valve rod and the supporting frame, and comprehensive leakage monitoring of the monitor on the gap is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of remote directional control valves, in particular to a remote directional control valve with a leakage monitoring function. Background Art

[0002] A remote directional control valve is a device that precisely adjusts fluid flow, pressure, temperature, and other parameters through remote control. Primarily used in industrial automation, it receives signals from the control system, such as 4-20mA current and 0-10V voltage, and converts them into valve opening signals through a signal converter. This signal is then driven by an actuator to control the valve. Featuring high precision, high reliability, versatility, ease of maintenance, and energy-saving features, remote directional control valves are widely used in various industrial automation scenarios, including those in the chemical, petroleum, natural gas, and power industries. They play a vital role in ensuring the stable operation of industrial systems and improving production efficiency.

[0003] During use, existing remote directional control valves lack a leakage monitoring function, which makes it impossible for them to determine whether there are leaks in pipelines, etc., and thus fail to detect and address potential leaks in a timely manner, which can easily lead to production safety and personnel safety. Summary of the Invention

[0004] The object of the present invention is to provide a remote directional control valve with a leakage monitoring function to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: the remote directional control valve with leakage monitoring function includes a valve body and a valve core, the valve body is provided with a valve hole, a valve stem is installed on the valve core, the valve stem passes through the valve hole, and a valve disc is installed on the top of the valve stem, a support frame is installed on the valve body by bolts, a signal controller is installed on the top of the support frame, a control motor is installed at the bottom of the signal controller, a linkage rod is installed on the output end of the control motor, a connecting flange is installed at the bottom of the linkage rod, and the connecting flange is connected to the valve disc by bolts, a ring rail is installed on the top of the support frame, two slide seats are symmetrically slidably installed on the ring rail, and guide rails are installed on the two slide seats, which slide on the guide rails. A moving seat is installed, and an electric telescopic rod is installed at the bottom of the moving seat. A monitor is installed on the electric telescopic rod. When the remote directional control valve is regulated, the signal is received by the signal controller, which can allow the control motor to drive the connecting flange to rotate accordingly through the linkage rod, so that the connecting flange can drive the valve disc to rotate synchronously, so that the valve disc can drive the valve core to rotate accordingly through the valve stem, thereby realizing flow regulation. At the same time, by starting the ring rail, the slide seat moves in a circular trajectory, and starting the guide rail, the moving seat can drive the electric telescopic rod to move horizontally, and then by starting the electric telescopic rod, the monitor can be driven to fit the gap between the valve stem and the support frame, so that the monitor can realize comprehensive leakage monitoring of the gap.

[0006] As a preferred technical solution, the signal controller is electrically connected to the control motor, and the signal controller is electrically connected to the ring rail, the guide rail and the electric telescopic rod.

[0007] As an optimal technical solution, a fixing rod is installed on the support frame, and a fixing block is installed on the fixing rod. Two end plates are symmetrically installed on both sides of the bottom of the fixing block, and the two end plates are connected by a cross bar, and electromagnets are installed on the opposite surfaces of the two end plates. Two sliders are slidably installed on the cross bar, and magnetic blocks are installed on the two sliders. Semi-ring splints are installed on the side of the magnetic blocks close to the valve body, and rubber pads are installed on the concave part of the semi-ring splints. The two magnetic blocks attract each other with opposite sexes. When leak monitoring is performed, since the slider can slide along the cross bar, the two magnetic blocks can fit together under the action of opposite attraction, thereby driving the two semi-ring splints to connect with each other, so that the rubber pads on the semi-ring splints can seal the gap between the support frame and the valve body.

[0008] As an optimal technical solution, the two semi-ring clamps are butt-jointed to form a sealing ring, and the semi-ring clamps are flush with the gap between the support frame and the valve body.

[0009] As an optimal technical solution, a power supply chamber is provided in the fixed block, a drive motor is installed on one side of the power supply chamber, a pole is installed on the output end of the drive motor, and a plurality of cutting plates are installed in a circular array on the side wall of the pole. Magnetic plates are symmetrically arranged in the upper and lower parts of the power supply chamber, and the two magnetic plates are respectively positive and negative poles. A varistor is installed in the power supply chamber, and a rotary joint is installed at the end of the pole away from the drive motor. The rotary joint is connected to the varistor through a wire. The pole, the varistor and the electromagnet form a circuit. When leakage monitoring is performed, the drive motor is started, the pole can drive the cutting plate to rotate, so that the cutting plate cuts the magnetic lines of force between the two magnetic plates, and the generated current can be used to power the electromagnet through the varistor, so that the two magnetic blocks move toward each other under the action of the magnetic force of the electromagnet, and the close contact effect of the two magnetic blocks can be guaranteed.

[0010] As a preferred technical solution, a first chamber is provided in the fixed block, a piston is slidably mounted in the first chamber, and the first chamber is connected to the input end of the valve body through a branch pipe, the piston is connected to the side of the first chamber away from the branch pipe through a support spring, a transmission rod is installed on the side of the piston close to the support spring, the side of the power supply chamber away from the drive motor is connected to the first chamber through a through hole, the transmission rod passes through the through hole and is slidably fitted, a linkage plate is installed on the end of the transmission rod away from the piston, and a clamping plate is symmetrically arranged on the side of the linkage plate away from the transmission rod, and the two clamping plates are connected by an elastic curved plate, and the protrusion of the elastic curved plate contacts the piezoresistor. When the hydraulic pressure in the pipeline changes, the liquid can enter the first chamber through the branch pipe, so that the piston can compress the support spring under the action of the hydraulic pressure and move accordingly. During the movement, the piston can be moved synchronously by the transmission rod, so that the transmission rod can drive the elastic curved plate through the linkage plate to squeeze the piezoresistor accordingly, thereby reducing the resistance value of the piezoresistor, which can increase the current entering the electromagnet, and thus the electromagnet can automatically adjust the magnetic support force on the magnetic block according to the change in the hydraulic pressure.

[0011] As an optimal technical solution, the linkage plate is symmetrically installed with multiple elastic telescopic rods above and below, and a clamping plate is installed on the elastic telescopic rods. When the elastic curved plate squeezes the varistor, the elastic curved plate will extend during the extrusion process, so that the elastic telescopic rods can be stretched by the clamping plate during the extension process, thereby ensuring the extrusion stability of the elastic curved plate.

[0012] As an optimal technical solution, a displacement sensor is installed on the linkage plate, a second chamber is provided in the fixed block, a rotating shaft is rotatably installed on the side of the second chamber away from the power supply chamber, a rotating motor is installed on the fixed block, the output shaft of the rotating motor is connected to the end of the rotating shaft away from the second chamber, a rotating column is installed on the other end of the rotating shaft, an angle sensor is installed on the side of the rotating column away from the rotating shaft, the angle sensor, displacement sensor and rotating motor are all electrically connected to the signal controller, a curved track is provided on the rotating column, a slide plate is slidably installed in the second chamber, a connecting rod is installed on the side of the slide plate close to the rotating column, a transmission ring is installed on the connecting rod, a transmission shaft is installed in the transmission ring, the transmission shaft slides and is inserted in the curved track, a sliding rod is symmetrically installed on the side of the slide plate away from the connecting rod, and the side of the second chamber away from the rotating shaft The side of the power supply chamber close to the drive motor is connected through two sliding holes, and the two sliding holes are symmetrical up and down. The two sliding rods pass through the two sliding holes respectively, and a magnetic plate is installed at the end of the sliding rod away from the slide. When the displacement sensor detects the moving distance of the linkage plate, the rotation motor can be controlled by the signal controller. Under the monitoring of the angle sensor, the rotation motor can drive the rotating column to rotate at a corresponding angle through the rotating shaft. During the rotation process, the rotating column can squeeze the transmission shaft through the curve, so that the transmission shaft can drive the slide to move accordingly through the transmission ring and the connecting rod. During the movement of the slide, the two magnetic plates can be driven by the sliding rod to be displaced synchronously, so that the overlapping area of ​​the two magnetic plates and the pole column can be controlled according to the hydraulic pressure changes, which is conducive to controlling the power supply to the electromagnet according to the hydraulic pressure changes, thereby ensuring the fastening effect of the two magnetic blocks.

[0013] Compared with the prior art, the present invention has the following beneficial effects: This application starts the ring rail to make the slide move in a circular trajectory, and starts the guide rail, so that the moving seat can drive the electric telescopic rod to move horizontally. Then, by starting the electric telescopic rod, the monitor can be driven to fit the gap between the valve stem and the support frame, so that the monitor can fully monitor the leakage in the gap.

[0014] This application starts the driving motor to make the cutting plate cut the magnetic flux lines between the two magnetic plates, so that the generated current can be used to power the electromagnet through the varistor, so that the two magnetic blocks can move toward each other under the magnetic force of the electromagnet, and can ensure the close contact effect of the two magnetic blocks, thereby sealing the gap between the support frame and the valve body.

[0015] The present application can utilize the hydraulic changes in the pipeline to change the squeezing force of the elastic curved plate on the varistor, so that the resistance value of the varistor is reduced, which can increase the current entering the electromagnet, and then the electromagnet can automatically adjust the magnetic support force on the magnetic block according to the changes in the hydraulic pressure. At the same time, the overlapping area of ​​the two magnetic plates and the poles can be controlled accordingly according to the hydraulic pressure changes, which is conducive to controlling the power supply to the electromagnet according to the hydraulic pressure changes, thereby ensuring the fastening effect of the two magnetic blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the present invention from a first perspective; Figure 2 This is a schematic diagram of the structure from a second viewing angle of the present invention; Figure 3 It is a schematic diagram of the first cross-sectional structure of the present invention; Figure 4 It is a second cross-sectional structural schematic diagram of the present invention; Figure 5 yes Figure 3 A in the figure is an enlarged structural diagram.

[0017] Figure 6 yes Figure 2 A schematic diagram of the structure at point B in FIG. Figure 7 yes Figure 4 A schematic diagram of the structure is enlarged at C; Figure 8 yes Figure 4 The enlarged structural diagram at D in FIG.

[0018] In the figure: 1. Valve body; 2. Valve core; 3. Valve hole; 4. Valve stem; 5. Valve disc; 6. Support frame; 7. Signal controller; 8. Control motor; 9. Linkage rod; 10. Connecting flange; 11. Ring rail; 12. Sliding seat; 13. Guide rail; 14. Moving seat; 15. Electric telescopic rod; 16. Monitor; 1701, fixing rod; 1702, fixing block; 1703, end plate; 1704, electromagnet; 1705, crossbar; 1706, slider; 1707, magnetic block; 1708, half-ring clamp; 1709, rubber pad; 1710, power supply chamber; 1711, drive motor; 1712, pole; 1713, cutting plate; 1714, magnetic plate; 1715, rotary joint; 1716, varistor; 1801. First chamber; 1802. Piston; 1803. Branch pipe; 1804. Support spring; 1805. Transmission rod; 1806. Perforation; 1807. Linkage plate; 1808. Clamping plate; 1809. Elastic curved plate; 1810. Elastic telescopic rod; 1811. Second chamber; 1812. Rotating shaft; 1813. Rotating motor; 1814. Rotating column; 1815. Angle sensor; 1816. Curved track; 1817. Slide plate; 1818. Connecting rod; 1819. Transmission ring; 1820. Transmission shaft; 1821. Sliding rod; 1822. Sliding hole. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0020] Example: Figures 1-8 As shown, the present invention provides a technical solution for a remote directional control valve with a leakage monitoring function, the remote directional control valve with a leakage monitoring function comprises a valve body 1 and a valve core 2, the valve body 1 is provided with a valve hole 3, a valve stem 4 is mounted on the valve core 2, the valve stem 4 passes through the valve hole 3, and a valve disc 5 is mounted on the top of the valve stem 4, a support frame 6 is mounted on the valve body 1 by bolts, a signal controller 7 is mounted on the top of the support frame 6, a control motor 8 is mounted on the bottom of the signal controller 7, a linkage rod 9 is mounted on the output end of the control motor 8, a connecting flange 10 is mounted on the bottom of the linkage rod 9, and the connecting flange 10 is connected to the valve disc 5 by bolts, a ring rail 11 is mounted on the top of the support frame 6, two slides 12 are symmetrically slidably mounted on the ring rail 11, and guide rails 13 are mounted on the two slides 12, and a movable member is slidably mounted on the guide rail 13 The bottom of the seat 14 and the movable seat 14 are both equipped with an electric telescopic rod 15, and a monitor 16 is installed on the electric telescopic rod 15. When the remote directional control valve is regulated, the signal is received by the signal controller 7, which can allow the control motor 8 to drive the connecting flange 10 to rotate accordingly through the linkage rod 9, so that the connecting flange 10 can drive the valve disc 5 to rotate synchronously, so that the valve disc 5 can drive the valve core 2 to rotate accordingly through the valve stem 4 to achieve flow control. At the same time, by starting the ring rail 11, the slide seat 12 moves in a circular trajectory, and starting the guide rail 13, the movable seat 14 can drive the electric telescopic rod 15 to move horizontally, and then by starting the electric telescopic rod 15, the monitor 16 can be driven to fit the gap between the valve stem 4 and the support frame 6, so that the monitor 16 can achieve comprehensive leakage monitoring of the gap.

[0021] The signal controller 7 is electrically connected to the control motor 8 , and the signal controller 7 is electrically connected to the ring rail 11 , the guide rail 13 and the electric telescopic rod 15 .

[0022] A fixing rod 1701 is installed on the support frame 6, and a fixing block 1702 is installed on the fixing rod 1701. Two end plates 1703 are symmetrically installed on both sides of the bottom of the fixing block 1702. The two end plates 1703 are connected by a cross bar 1705, and electromagnets 1704 are installed on the opposite surfaces of the two end plates 1703. Two sliders 1706 are slidably installed on the cross bar 1705. Both sliders 1706 are equipped with magnetic blocks 1707. The magnetic blocks 1707 are close to the valve body 1. A semi-ring clamp 1708 is installed on one side, and a rubber pad 1709 is installed on the concave part of the semi-ring clamp 1708. The two magnetic blocks 1707 attract each other with opposite charges. When leak monitoring is performed, since the slider 1706 can slide along the cross bar 1705, the two magnetic blocks 1707 can fit together under the action of opposite charges, thereby driving the two semi-ring clamps 1708 to connect with each other, so that the rubber pad 1709 on the semi-ring clamp 1708 can seal the gap between the support frame 6 and the valve body 1.

[0023] The two half-ring clamps 1708 are butt-jointed to form a sealing ring, and the half-ring clamps 1708 are flush with the gap between the support frame 6 and the valve body 1 .

[0024] A power supply chamber 1710 is provided in the fixed block 1702. A driving motor 1711 is installed on one side of the power supply chamber 1710. A pole 1712 is installed on the output end of the driving motor 1711. A plurality of cutting plates 1713 are installed in a circular array on the side wall of the pole 1712. Magnetic plates 1714 are symmetrically arranged in the power supply chamber 1710. The two magnetic plates 1714 are respectively positive and negative magnetic poles. A varistor 1716 is installed in the power supply chamber 1710. A rotary joint 1715 is installed at the end of the pole 1712 away from the driving motor 1711. The rotary joint 1715 and the varistor The resistor 1716 is connected through a wire, and the pole 1712, the varistor 1716 and the electromagnet 1704 form a circuit. When leak monitoring is performed, the drive motor 1711 is started, and the pole 1712 can drive the cutting plate 1713 to rotate, so that the cutting plate 1713 cuts the magnetic flux lines between the two magnetic plates 1714. The generated current can be used to power the electromagnet 1704 through the varistor 1716, so that the two magnetic blocks 1707 can move toward each other under the magnetic force of the electromagnet 1704, and the close contact effect of the two magnetic blocks 1707 can be guaranteed.

[0025] A first chamber 1801 is provided in the fixed block 1702, and a piston 1802 is slidably installed in the first chamber 1801, and the first chamber 1801 is connected to the input end of the valve body 1 through a branch pipe 1803, and the piston 1802 is connected to the side of the first chamber 1801 away from the branch pipe 1803 through a support spring 1804, and a transmission rod 1805 is installed on the side of the piston 1802 close to the support spring 1804, and the side of the power supply chamber 1710 away from the drive motor 1711 is connected to the first chamber 1801 through a through hole 1806, and the transmission rod 1805 passes through the through hole 1806 and is in sliding fit, and a linkage plate 1807 is installed on the end of the transmission rod 1805 away from the piston 1802, and a clamping plate 1808 is symmetrically provided on the upper and lower sides of the linkage plate 1807 away from the transmission rod 1805. The card plates 1808 are connected by the elastic curved plate 1809, and the raised part of the elastic curved plate 1809 is in contact with the piezoresistor 1716. When the hydraulic pressure in the pipeline changes, the liquid can enter the first chamber 1801 through the branch pipe 1803, so that the piston 1802 can compress the support spring 1804 under the action of the hydraulic pressure and move accordingly. During the movement, the piston 1802 can move synchronously through the transmission rod 1805, so that the transmission rod 1805 can drive the elastic curved plate 1809 through the linkage plate 1807 to squeeze the piezoresistor 1716 accordingly, thereby reducing the resistance value of the piezoresistor 1716, which can increase the current entering the electromagnet 1704, and then the electromagnet 1704 can automatically adjust the magnetic support force on the magnetic block 1707 according to the change of the hydraulic pressure.

[0026] The linkage plate 1807 is symmetrically installed with multiple elastic telescopic rods 1810 above and below, and a clamping plate 1808 is installed on the elastic telescopic rods 1810. When the elastic curved plate 1809 squeezes the piezoresistor 1716, the elastic curved plate 1809 will extend during the extrusion process, so that the elastic telescopic rods 1810 can be stretched through the clamping plate 1808 during the extension process, thereby ensuring the extrusion stability of the elastic curved plate 1809.

[0027] A displacement sensor is installed on the linkage plate 1807, a second chamber 1811 is provided in the fixed block 1702, a rotating shaft 1812 is rotatably installed on the side of the second chamber 1811 away from the power supply chamber 1710, a rotating motor 1813 is installed on the fixed block 1702, the output shaft of the rotating motor 1813 is connected to the end of the rotating shaft 1812 away from the second chamber 1811, a rotating column 1814 is installed on the other end of the rotating shaft 1812, and an angle sensor 1815 is installed on the side of the rotating column 1814 away from the rotating shaft 1812. The angle sensor 1815, the displacement sensor and the rotating motor 1813 are connected. 813 are electrically connected to the signal controller 7, a curved path 1816 is provided on the rotating column 1814, a slide plate 1817 is slidably installed in the second chamber 1811, a connecting rod 1818 is installed on the side of the slide plate 1817 close to the rotating column 1814, a transmission ring 1819 is installed on the connecting rod 1818, a transmission shaft 1820 is installed in the transmission ring 1819, and the transmission shaft 1820 slides and penetrates the curved path 1816, a sliding rod 1821 is symmetrically installed on the side of the slide plate 1817 away from the connecting rod 1818, and the side of the second chamber 1811 away from the rotating shaft 1812 is connected to the power supply chamber 17 The side close to the driving motor 1711 is connected by two sliding holes 1822, and the two sliding holes 1822 are symmetrical in the vertical direction. Two sliding rods 1821 respectively pass through the two sliding holes 1822, and the ends of the sliding rods 1821 away from the slide plate 1817 are installed with magnetic plates 1714. When the displacement sensor detects the moving distance of the linkage plate 1807, the signal controller 7 can control the rotation motor 1813 to operate. Under the monitoring of the angle sensor 1815, the rotation motor 1813 can drive the rotating column 1814 to rotate to a corresponding angle through the rotating shaft 1812. The rotating column 1814 is rotated at a corresponding angle. During the rotation process, the curved path 1816 can squeeze the transmission shaft 1820, so that the transmission shaft 1820 can drive the slide plate 1817 to move accordingly through the transmission ring 1819 and the connecting rod 1818. During the movement, the slide plate 1817 can drive the two magnetic plates 1714 to move synchronously through the slide bar 1821, so that the overlapping area of ​​the two magnetic plates 1714 and the pole 1712 can be controlled according to the hydraulic pressure change, which is conducive to controlling the power supply to the electromagnet 1704 according to the hydraulic pressure change, thereby ensuring the fastening effect of the two magnetic blocks 1707.

[0028] Working principle of the present invention: When the remote directional control valve is regulated, the signal controller 7 receives the signal, which allows the control motor 8 to drive the connecting flange 10 to rotate accordingly through the linkage rod 9, so that the connecting flange 10 can drive the valve disc 5 to rotate synchronously, so that the valve disc 5 can drive the valve core 2 to rotate accordingly through the valve stem 4, thereby realizing the regulation of the flow rate. At the same time, by starting the annular rail 11, the slide seat 12 moves in a circular trajectory, and starting the guide rail 13, the moving seat 14 can drive the electric telescopic rod 15 to move horizontally, and then by starting the electric telescopic rod 15, the monitor 16 can be driven to fit the gap between the valve stem 4 and the support frame 6, so that the monitor 16 can realize comprehensive leakage monitoring of the gap.

[0029] When leak monitoring is being performed, since the slider 1706 can slide along the cross bar 1705, the two magnetic blocks 1707 can fit together under the action of opposite attraction, thereby driving the two semi-ring clamps 1708 to connect relative to each other, so that the rubber pad 1709 on the semi-ring clamp 1708 can seal the gap between the support frame 6 and the valve body 1. At the same time, starting the drive motor 1711 can allow the pole 1712 to drive the cutting plate 1713 to rotate, so that the cutting plate 1713 cuts the magnetic lines of force between the two magnetic plates 1714, and the generated current can be used to power the electromagnet 1704 through the varistor 1716, so that the two magnetic blocks 1707 can move toward each other under the magnetic force of the electromagnet 1704, and the close contact effect of the two magnetic blocks 1707 can be guaranteed.

[0030] When the hydraulic pressure in the pipeline changes, the liquid can enter the first chamber 1801 through the branch pipe 1803, so that the piston 1802 can compress the support spring 1804 under the action of the hydraulic pressure and move accordingly. During the movement, the piston 1802 can move synchronously through the transmission rod 1805, so that the transmission rod 1805 can drive the elastic curved plate 1809 through the linkage plate 1807 to squeeze the varistor 1716 accordingly, thereby reducing the resistance value of the varistor 1716, which can increase the current entering the electromagnet 1704, and then the electromagnet 1704 can automatically adjust the magnetic support force on the magnetic block 1707 according to the change of hydraulic pressure.

[0031] When the displacement sensor detects the moving distance of the linkage plate 1807, the signal controller 7 can be used to control the rotation motor 1813 to operate. Under the monitoring of the angle sensor 1815, the rotation motor 1813 can drive the rotating column 1814 to rotate at a corresponding angle through the rotating shaft 1812. During the rotation process, the rotating column 1814 can squeeze the transmission shaft 1820 through the curved path 1816, so that the transmission shaft 1820 can drive the slide plate 1817 to move accordingly through the transmission ring 1819 and the connecting rod 1818. During the movement, the slide plate 1817 can drive the two magnetic plates 1714 to move synchronously through the slide bar 1821, so that the overlapping area of ​​the two magnetic plates 1714 and the pole 1712 can be controlled according to the hydraulic pressure changes, which is conducive to controlling the power supply to the electromagnet 1704 according to the hydraulic pressure changes, thereby ensuring the fastening effect of the two magnetic blocks 1707.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A remote directional control valve with leakage monitoring function, characterized in that: The remote directional control valve with leakage monitoring function comprises a valve body (1) and a valve core (2), wherein the valve body (1) is provided with a valve hole (3), the valve core (2) is provided with a valve stem (4), the valve stem (4) passes through the valve hole (3), and a valve disc (5) is provided on the top of the valve stem (4), a support frame (6) is provided on the valve body (1) by means of bolts, a signal controller (7) is provided on the top of the support frame (6), a control motor (8) is provided on the bottom of the signal controller (7), and a linkage rod ( 9), a connecting flange (10) is installed at the bottom of the linkage rod (9), and the connecting flange (10) is connected to the valve disc (5) by bolts. A ring rail (11) is installed on the top of the support frame (6), and two slides (12) are symmetrically slidably installed on the ring rail (11), and a guide rail (13) is installed on each of the two slides (12), and a movable seat (14) is slidably installed on the guide rail (13), and an electric telescopic rod (15) is installed at the bottom of each of the movable seats (14), and a monitor (16) is installed on each of the electric telescopic rods (15).

2. A remote directional control valve with leakage monitoring function according to claim 1, characterized in that: The signal controller (7) is electrically connected to the control motor (8), and the signal controller (7) is electrically connected to the ring rail (11), the guide rail (13) and the electric telescopic rod (15).

3. The remote directional control valve with leakage monitoring function according to claim 1, characterized in that: A fixing rod (1701) is installed on the support frame (6), and a fixing block (1702) is installed on the fixing rod (1701). Two end plates (1703) are symmetrically installed on both sides of the bottom of the fixing block (1702). The two end plates (1703) are connected by a cross bar (1705), and electromagnets (1704) are installed on the opposite surfaces of the two end plates (1703). Two sliders (1706) are slidably installed on the cross bar (1705), and magnetic blocks (1707) are installed on the two sliders (1706). A semi-annular splint (1708) is installed on the side of the magnetic block (1707) close to the valve body (1), and a rubber pad (1709) is installed in the concave part of the semi-annular splint (1708). The two magnetic blocks (1707) attract each other with opposite poles.

4. A remote directional control valve with leakage monitoring function according to claim 3, characterized in that: The two semi-ring clamps (1708) are butt-jointed to form a sealing ring, and the semi-ring clamps (1708) are flush with the gap between the support frame (6) and the valve body (1).

5. The remote directional control valve with leakage monitoring function according to claim 4, characterized in that: A power supply chamber (1710) is provided in the fixed block (1702), a driving motor (1711) is installed on one side of the power supply chamber (1710), a pole (1712) is installed on the output end of the driving motor (1711), a plurality of cutting plates (1713) are installed in a circular array on the side wall of the pole (1712), magnetic plates (1714) are symmetrically arranged in the power supply chamber (1710), the two magnetic plates (1714) are respectively positive and negative magnetic poles, a varistor (1716) is installed in the power supply chamber (1710), a rotary joint (1715) is installed at the end of the pole (1712) away from the driving motor (1711), the rotary joint (1715) and the varistor (1716) are connected via a wire, and the pole (1712), the varistor (1716) and the electromagnet (1704) form a circuit.

6. The remote directional control valve with leakage monitoring function according to claim 5, characterized in that: The fixed block (1702) is provided with a first chamber (1801), a piston (1802) is slidably installed in the first chamber (1801), and the first chamber (1801) is connected to the input end of the valve body (1) through a branch pipe (1803), the piston (1802) is connected to the side of the first chamber (1801) away from the branch pipe (1803) through a support spring (1804), and a transmission rod (1805) is installed on the side of the piston (1802) close to the support spring (1804), and the power supply chamber (1710) is away from the drive motor (17 11) is connected to the first chamber (1801) through a through hole (1806), the transmission rod (1805) passes through the through hole (1806) and is in sliding fit, a linkage plate (1807) is installed at the end of the transmission rod (1805) away from the piston (1802), and a clamping plate (1808) is symmetrically arranged on the upper and lower sides of the linkage plate (1807) away from the transmission rod (1805), and the two clamping plates (1808) are connected by an elastic curved plate (1809), and the protrusion of the elastic curved plate (1809) is in contact with the varistor (1716).

7. The remote directional control valve with leakage monitoring function according to claim 6, characterized in that: The linkage plate (1807) is symmetrically mounted with a plurality of elastic telescopic rods (1810) in the upper and lower parts, and a clamping plate (1808) is mounted on the elastic telescopic rods (1810).

8. The remote directional control valve with leakage monitoring function according to claim 6, characterized in that: A displacement sensor is installed on the linkage plate (1807), a second chamber (1811) is provided in the fixed block (1702), a rotating shaft (1812) is rotatably installed on the side of the second chamber (1811) away from the power supply chamber (1710), a rotating motor (1813) is installed on the fixed block (1702), an output shaft of the rotating motor (1813) is connected to the end of the rotating shaft (1812) away from the second chamber (1811), a rotating column (1814) is installed on the other end of the rotating shaft (1812), an angle sensor (1815) is installed on the side of the rotating column (1814) away from the rotating shaft (1812), the angle sensor (1815), the displacement sensor and the rotating motor (1813) are all electrically connected to the signal controller (7), a curved path (1816) is provided on the rotating column (1814), and a rotating shaft (1816) is slidably installed in the second chamber (1811). The slide plate (1817) is provided with a connecting rod (1818) on the side of the slide plate (1817) close to the rotating column (1814), a transmission ring (1819) is provided on the connecting rod (1818), a transmission shaft (1820) is provided in the transmission ring (1819), and the transmission shaft (1820) is slidably inserted in the curved track (1816). The slide plate (1817) is provided with a connecting rod (1818) on the side away from the connecting rod (1818) symmetrically. A slide rod (1821), a side of the second chamber (1811) away from the rotating shaft (1812) is connected to a side of the power supply chamber (1710) close to the driving motor (1711) through two slide holes (1822), and the two slide holes (1822) are symmetrical up and down, the two slide rods (1821) respectively pass through the two slide holes (1822), and a magnetic plate (1714) is installed at the end of the slide rod (1821) away from the slide plate (1817).

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