Gas safety valve for gas pipe network

Abstract

The utility model relates to the field of gas valves, in particular to a gas safety valve for a gas pipe network. The gas valve aims at solving the problems that most of traditional gas valves need manual field operation to achieve the functions of opening, closing, adjusting and the like, the response time of accidents can be prolonged, and safety accidents are likely to happen. The controller can upload data collected by the sensor to a remote control center, operation and maintenance personnel can conveniently check the operation condition of the valve at any time, the air cylinder is controlled to be started through a control unit in the controller, the air cylinder conveys air into the piston box through an air inlet pipe, the pressure intensity in the piston box is changed, and the pressure intensity is adjusted. The position of the valve element is adjusted through the valve rod, corresponding opening or closing or opening degree adjusting operation on the valve is achieved, the risk of gas safety accidents is effectively reduced, meanwhile, the workload of operation and maintenance personnel is relieved, and the management efficiency of the whole gas supply system is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas valve technical field especially relates to a gas safety valve for gas pipe network. BACKGROUND

[0002] With the acceleration of urbanization process and the increasingly wide use of gas, gas safety problem is more and more concerned, and the traditional gas valve mostly needs artificial field operation to realize opening, closing and other functions, which is not only inefficient, but also cannot be controlled in time in the face of some sudden gas leakage, overpressure and other emergency situations, which is easy to cause serious safety accidents. SUMMARY

[0003] (I) technical problem to be solved

[0004] In order to solve the problem that the traditional gas valve mostly needs artificial field operation to realize opening, closing and adjustment, which will increase the reaction time of the accident and easily lead to safety accidents.

[0005] (II) technical scheme

[0006] The technical scheme of the utility model is: including valve body and the valve cover fixed in the top of valve body, the inside installation of valve body has the valve core, the top fixed connection of valve core has the valve rod, the top fixed connection of valve cover has the support, the top fixed connection of support has the piston box, the inside sliding connection of piston box has the piston plate, the upper surface fixed connection of piston plate has the spring, the surface fixed installation of support has the controller, the bottom surface fixed connection of piston box has the air inlet pipe, the surface fixed installation of support has the air cylinder, and the output end of air cylinder and air inlet pipe are communicated.

[0007] Preferably, the controller can upload the data collected by the sensor to the remote control center, and receive the operation instruction from the remote control center, so that the operation personnel can check the valve operation at any time, control the starting of the air cylinder through the control unit in the controller, then the air cylinder delivers air to the inside of the piston box through the air inlet pipe, so that the pressure on both sides of the piston plate changes, and the piston plate moves vertically, the valve core slides in the valve body through the valve rod, and the opening, closing or opening degree adjustment operation of the valve is realized.

[0008] Further, the pressure sensor, flow sensor and gas leakage sensor are installed in the valve body, which can monitor the pressure, flow and gas leakage in the gas pipeline in real time.

[0009] Further, the position indicator is fixedly installed on one side of the valve rod surface close to the controller, which is convenient for determining the opening degree state of the valve.

[0010] Further, the upper surface of the piston box is fixedly connected with a gear box, the upper surface of the piston plate is fixedly connected with a connecting column, the connecting column is fixedly connected with a nut inside, the nut is screwed with a screw rod inside, the top end of the screw rod penetrates the inside of the piston box and is fixedly connected with a short gear arranged inside the gear box, so as to conveniently adjust the position of the piston plate by rotating the screw rod.

[0011] Further, the side close to the short gear inside the gear box is rotatably connected with a rotating rod, the surface of the rotating rod is fixedly connected with a long gear, the long gear and the short gear are meshingly connected, the top end of the rotating rod penetrates the inside of the gear box and is connected with a hand wheel arranged on the upper side of the gear box, so as to improve the convenience of rotating the screw rod.

[0012] Further, the surface of the valve rod is fixedly connected with a limiting lug on both sides in a symmetrical manner, the inside of the piston box is provided with a sliding groove matched with the limiting lug on one side close to the limiting lug, so as to limit the movement of the piston plate.

[0013] Further, the bottom surface of the piston box is fixedly connected with a sealing ring pad on one side close to the valve rod, so as to guarantee the sealing effect of the air chamber inside the piston box.

[0014] (Three) beneficial effects

[0015] Compared with the prior art, the beneficial effects of the utility model lie in that the controller can upload the data collected by the sensor to the remote control center and receive operation instructions from the remote control center, so that the operation and maintenance personnel can check the valve operation at any time, control the starting of the air cylinder through the control unit inside the controller, then the air cylinder delivers air to the inside of the piston box through the air inlet pipe, so that the pressure on both sides of the piston plate changes, thereby driving the piston plate to move vertically, driving the valve core to slide inside the valve body through the valve rod, realizing the opening, closing or opening degree adjustment operation of the valve, effectively reducing the risk of gas safety accidents, relieving the work burden of the operation and maintenance personnel and improving the management efficiency of the whole gas supply system; the rotating rod can be driven to rotate through the hand wheel, the screw rod is driven to rotate through the long gear and the short gear, so that the connecting column moves vertically, thereby driving the piston plate to move inside the gear box, adjusting the position of the valve core through the valve rod, realizing the opening, closing or opening degree adjustment operation of the valve, improving the flexibility of the device. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The overall structure schematic view of the utility model is shown;

[0017] Figure 2 The structure schematic view of the controller and the position indicator in the utility model is shown;

[0018] Figure 3 The sectional view of the valve body in the utility model is shown;

[0019] Figure 4 The structure schematic diagram of the piston plate and the spring in the utility model is shown.

[0020] Figure 5 The structure schematic diagram of the screw rod and the nut in the utility model is shown.

[0021] Figure 6 The structure schematic diagram of the utility model Figure 3 The enlarged view of A in the utility model.

[0022] Mark explanation: 1-valve body, 2-valve cover, 3-bracket, 4-piston box, 5-gear box, 6-cylinder, 7-hand wheel, 8-valve core, 9-valve rod, 10-position indicator, 11-controller, 12-piston plate, 13-spring, 14-inlet pipe, 15-short gear, 16-screw rod, 17-connecting column, 18-nut, 19-limiting lug, 20-rotating rod, 21-long gear. Specific implementation

[0023] The utility model is further explained below in combination with the drawings and examples.

[0024] Example 1:

[0025] Reference Figures 1-6The utility model provides a kind of embodiment: including valve body 1 and the valve cover 2 of being fixed in the top end of valve body 1, the inside installation of valve body 1 has valve core 8, the top end fixedly connected with valve stem 9 of valve core 8, the upper fixedly connected with support 3 of valve cover 2, the top end fixedly connected with piston box 4 of support 3, the inside slidingly connected with piston plate 12 of piston box 4, the upper surface fixedly connected with spring 13 of piston plate 12, the surface fixedly installed with controller 11 of support 3, the bottom surface fixedly connected with air inlet pipe 14 of piston box 4, the surface fixedly installed with cylinder 6 of support 3, and the output end of cylinder 6 and air inlet pipe 14 are communicated, pressure sensor and flow sensor and gas leakage sensor are installed in valve body 1, pressure sensor, flow sensor, real-time monitoring pressure, flow and gas leakage in gas pipeline, and monitoring data is fed back to control unit in controller 11, remote communication module is arranged in controller 11, can be uploaded to remote control center with the data collected to sensor, simultaneously receives operation instruction from remote control center, and it is convenient for operation and maintenance personnel to check valve operation condition at any time, when needing to adjust operation of valve opening and closing and opening degree, the control unit in controller 11 controls cylinder 6 to start, then cylinder 6 will air be delivered to the inside of piston box 4 through air inlet pipe 14, so that the pressure of the upper and lower sides of piston plate 12 changes, and then drives piston plate 12 to move vertically, drives valve core 8 to slide in valve body 1 by valve stem 9, realizes the opening, closing or opening degree adjustment operation of valve, effectively reduces the risk of gas safety accident, simultaneously reduces the work burden of operation and maintenance personnel, improves the management efficiency of entire gas supply system;

[0026] Valve stem 9 surface is fixedly installed with position indicator 10 on the side close to controller 11, linear displacement sensor is installed in position indicator 10, and the displacement value of valve core 8 is measured by detecting the position of position indicator 10 through controller 11, to determine the valve opening degree state.

[0027] It should be noted that: device inside is also equipped with emergency power supply device, in the case where normal power supply fails, emergency power supply can automatically switch power supply, ensure that the key components of valve continue to work normally, and send power failure alarm information to remote control center.

[0028] Embodiment 2:

[0029] Please refer to Figures 1-6In the embodiment, the upper surface of the piston box 4 is fixedly connected with the gear box 5, the upper surface of the piston plate 12 is fixedly connected with the connecting column 17, the inside of the connecting column 17 is fixedly connected with the nut 18, the inside of the nut 18 is screwed with the screw rod 16, the top end of the screw rod 16 penetrates through the inside of the piston box 4 and is fixedly connected with the short gear 15 arranged in the inside of the gear box 5, the side of the inside of the gear box 5 close to the short gear 15 is rotatably connected with the rotating rod 20, the surface of the rotating rod 20 is fixedly connected with the long gear 21, the long gear 21 and the short gear 15 are meshingly connected, the top end of the rotating rod 20 penetrates through the inside of the gear box 5 and is connected with the hand wheel 7 arranged on the upper side of the gear box 5, the surface of the valve rod 9 is symmetrically fixedly connected with the limiting protrusion 19, the side of the inside of the piston box 4 close to the limiting protrusion 19 is provided with the sliding groove matched with the limiting protrusion 19, and the side of the bottom surface of the piston box 4 close to the valve rod 9 is fixedly connected with the sealing ring pad, when it is needed to manually adjust the valve on site, the rotating rod 20 is driven to rotate by rotating the hand wheel 7, then the short gear 15 is driven to rotate by the long gear 21, the connecting column 17 is driven to move vertically by screwing the screw rod 16 and the nut 18, the piston plate 12 is further driven to move in the inside of the gear box 5, the position of the valve core 8 is adjusted by the valve rod 9, the opening, closing or opening degree adjusting operation of the valve is realized, the short gear 15 is arranged to slide on the surface of the long gear 21 when the opening and closing of the valve is controlled in a pneumatic mode, the normal movement of the limiting protrusion 19 is ensured under the condition that the short gear 15 and the long gear 21 are kept in engagement, the device can be manually operated when there is no gas source, the flexibility of the device in use is improved, the movement of the piston plate 12 is limited by the limiting protrusion 19, and the sealing effect of the air chamber in the inside of the piston box 4 is ensured by the sealing ring pad.

[0030] Through the above steps, the controller 11 can upload the data collected by the sensor to the remote control center and receive operation instructions from the remote control center, so that the operation and maintenance personnel can check the valve operation at any time, the air is delivered to the inside of the piston box 4 by the air cylinder 6 driven by the control unit in the controller 11, the pressure on the upper and lower sides of the piston plate 12 changes, the piston plate 12 moves vertically, the valve core 8 is driven to slide in the valve body 1 by the valve rod 9, the opening, closing or opening degree adjusting operation of the valve is realized, the risk of gas safety accidents is effectively reduced, the work burden of the operation and maintenance personnel is reduced, the management efficiency of the whole gas supply system is improved, the rotating rod 20 is driven to rotate by rotating the hand wheel 7, then the short gear 15 is driven to rotate by the long gear 21, the connecting column 17 is driven to move vertically by screwing the screw rod 16 and the nut 18, the piston plate 12 is further driven to move in the inside of the gear box 5, the position of the valve core 8 is adjusted by the valve rod 9, the opening, closing or opening degree adjusting operation of the valve is realized, the device can be manually operated when there is no gas source, and the flexibility of the device in use is improved.

[0031] The embodiments of the present application are described in detail above with reference to the accompanying drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application.

Claims

1. A gas safety valve for gas pipeline network, comprising a valve body (1) and a valve cover (2) fixed on the top end of the valve body (1), a valve core (8) is installed in the inside of the valve body (1), and a valve rod (9) is fixedly connected to the top end of the valve core (8), characterized in that: The upper fixed connection of the valve cover (2) has a support (3), the top end of the support (3) is fixedly connected with a piston box (4), the inside of the piston box (4) is slidably connected with a piston plate (12), the upper surface of the piston plate (12) is fixedly connected with a spring (13), the surface of the support (3) is fixedly installed with a controller (11), the bottom surface of the piston box (4) is fixedly connected with an air inlet pipe (14), the surface of the support (3) is fixedly installed with a cylinder (6), and the output end of the cylinder (6) is communicated with the air inlet pipe (14).

2. A gas safety valve for gas networks according to claim 1, characterized in that: The valve body (1) is internally provided with a pressure sensor, a flow sensor and a gas leakage sensor.

3. The gas safety valve for gas network according to claim 1, characterized in that: The surface of the valve rod (9) is fixedly installed with a position indicator (10) on the side close to the controller (11).

4. The gas safety valve for gas pipeline network according to claim 1, characterized in that: The upper surface of the piston box (4) is fixedly connected with a gear box (5), the upper surface of the piston plate (12) is fixedly connected with a connecting column (17), the inside of the connecting column (17) is fixedly connected with a nut (18), the inside of the nut (18) is screwed with a screw rod (16), and the top end of the screw rod (16) penetrates the inside of the piston box (4) and is fixedly connected with a short gear (15) arranged in the inside of the gear box (5).

5. A gas safety valve for gas networks according to claim 4, characterised in that: The inside of the gear box (5) is rotatably connected with a rotating rod (20) on the side close to the short gear (15), the surface of the rotating rod (20) is fixedly connected with a long gear (21), and the long gear (21) and the short gear (15) are meshingly connected, the top end of the rotating rod (20) penetrates the inside of the gear box (5) and is connected with a hand wheel (7) arranged on the upper side of the gear box (5).

6. A gas safety valve for gas networks according to claim 5, characterised in that: The surface of the valve rod (9) is fixedly connected with a limiting lug (19) on both sides, and the inside of the piston box (4) is provided with a sliding groove matched with the limiting lug (19) on the side close to the limiting lug (19).

7. A gas safety valve for gas networks according to claim 6, characterised in that: The bottom surface of the piston box (4) is fixedly connected with a sealing ring pad on the side close to the valve rod (9).

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