Automatic opening device for natural gas valve well lid

Abstract

The utility model discloses an automatic opening device for a natural gas valve well lid. The automatic opening device comprises a well lid body, a hydraulic rod, a power system and a control system. The well lid body comprises a lid body and a base. The cover body is hinged with one side of the base to form a hinge point; the power system comprises a hydraulic motor set, an electromagnetic valve and a hydraulic cylinder which are integrated. The hydraulic motor group is fixedly connected with the hydraulic cylinder; the electromagnetic valve is integrated on one side of the hydraulic cylinder or inside the hydraulic cylinder; the upper end of the hydraulic rod is connected with the inner wall of the cover body; a plurality of sensors are further arranged on the side wall of the base; the control system is connected with the power system and the sensor; the controller is used for collecting states of opening and closing of the cover body, performing alarm judgment, performing logic processing, controlling output and performing remote communication; the detected opening and closing state data of the well lid body is transmitted to the control system through the sensor, and then the power system is remotely controlled through the control system, so that opening and closing of the lid body are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of manhole cover plates, and in particular to an automatic opening device for a natural gas valve manhole cover. Background Art

[0002] The manhole covers in the prior art include ordinary round manhole covers and square valve manhole covers. The diameter of the round manhole cover is about 1000mm and the weight is about 40 kilograms. The square valve manhole cover is generally a stainless steel plate manhole cover, which is generally 1300mm long and 1300mm wide. For both types of manhole covers, the prior art generally involves manual handling of switches. The first type of round manhole cover is too heavy, and it is very inconvenient to open and close the manhole cover, which requires a lot of manpower. Although the second type is made of stainless steel and is lighter in weight, it is inconvenient to operate due to its large size. And manual operation will also pose certain safety hazards. And the manhole covers in the prior art are less safe. Utility Model Content

[0003] The utility model aims to overcome at least one defect of the above-mentioned prior art and provide a natural gas valve well cover automatic opening device to achieve high stability and realize the effect of remote intelligent control.

[0004] The utility model provides an automatic opening device for a natural gas valve well cover, comprising a well cover body, a hydraulic rod, a power system and a control system; the well cover body comprises a cover body and a base; one side of the cover body and the base are hinged to form a hinge point; the power system comprises an integrated hydraulic motor group, a solenoid valve and a hydraulic cylinder; the hydraulic motor group is fixedly connected to the hydraulic cylinder; the solenoid valve is integrated on one side or inside the hydraulic cylinder; the lower end of the hydraulic rod is connected to the hydraulic cylinder, and the upper end is connected to the inner wall of the cover body; the side wall of the base is also provided with a plurality of sensors; the control system is connected to the power system and the sensor; it is used for the state collection of the opening and closing of the cover body, alarm judgment, logic processing, control output and remote communication; the switch state data of the well cover body detected by the sensor is transmitted to the control system, and then the power system is remotely controlled by the control system to realize the opening and closing of the cover body.

[0005] The manhole cover is hinged to the base on one side, and the other side can be remotely controlled to open and close. The power system mainly realizes the up and down movement of the hydraulic rod. In addition to the hydraulic motor group, solenoid valve, and hydraulic cylinder, it also includes oil circuit blocks, oil tanks, oil pipes and other structures. The hydraulic motor, solenoid valve, oil pipe, oil tank, and hydraulic cylinder are assembled into a set of micro hydraulic power stations, and the micro hydraulic power station is installed on the side wall of the manhole cover body together with the hydraulic rod. The upper and lower ends of the micro hydraulic power station are respectively installed on the hydraulic rod and the base. It is integrated and has a compact structure. Since the specific internal structure of the power system is not the core invention point of the utility model, it will not be described in detail in this application, and it can be an integrated hydraulic power system purchased on the market. The manhole cover body targeted by the utility model can be round or square, and both are applicable. The control system can generally be set up indoors, that is, in a monitoring room, so that multiple manhole covers can be remotely observed and controlled in one monitoring room, saving manpower.

[0006] The utility model of the automatic opening device for the natural gas valve well cover can use sensors to remotely detect the opening and closing status of the well cover body, and can remotely control the start and stop of the power system to achieve remote intelligent control. The control system can integrate control software internally, and can achieve intelligent control without manual judgment by setting the program in advance.

[0007] Furthermore, the sensor includes an open state detection sensor, a closing and foreign object detection sensor, and a positioning sensor. The open state detection sensor is used to detect whether the cover is open; the closing and foreign object detection sensor can detect whether the cover is closed and whether there are foreign objects affecting the closing effect. The positioning sensor is used to locate the manhole cover in real time. When an alarm is triggered, the real-time position can be sent to the management personnel for quick and convenient processing.

[0008] Furthermore, the control system includes an explosion-proof box and functional components; the functional components are placed in the explosion-proof box; the explosion-proof box is provided with an alarm indicator light, a power indicator light, an emergency stop button, a manhole cover opening button and a manhole cover closing button.

[0009] The control system of the utility model integrates all functional components in the explosion-proof box. The manhole cover control system is mainly responsible for the collection of the position status of the manhole cover opening and closing, alarm judgment, logic processing, control output, remote communication and other functions. The control components of the electric hydraulic manhole cover, that is, the functional components, are installed separately in the explosion-proof box. The main functional components of the control system include power protection switch, control PLC, power module, various relays, wiring terminals, etc. As long as the above functions can be achieved, the specific installation layout is not the invention point of the utility model. It can refer to the prior art and this application will not elaborate.

[0010] The utility model can adopt the PLC system designed and developed by itself, and has an independent control box; the control box is made of high-quality cold plate folding welding and the surface is rust-proof and spray-painted, and the protection level of the control box is IP65, that is, the explosion-proof type adopts an explosion-proof control box, and the explosion-proof level is Exd IIB T4 Gb type engineering plastic explosion-proof box.

[0011] Furthermore, a sealing strip is embedded in the wall edge of the base to waterproof the manhole cover body.

[0012] Furthermore, a waterproof junction box is provided on one side of the hydraulic cylinder. The waterproof junction box is mainly designed for cables with interfaces to be installed in the waterproof junction box during installation to avoid leakage and cable exposure and corrosion.

[0013] Furthermore, the natural gas valve well cover automatic opening device of the utility model also includes an emergency release device, which is fixed to the inner wall of the cover body; the top of the hydraulic rod is detachably connected to the emergency release device.

[0014] Furthermore, the emergency release device includes a base, a rotating shaft, and a lock; the base is in a "U" shape, with a first through hole on both sides and a second through hole on the bottom; the two ends of the rotating shaft are respectively mounted on the first through holes; the lower end of the lock is rotatably connected to the rotating shaft; the top of the hydraulic rod passes through the second through hole and is movably connected to the lock; the hydraulic rod is disengaged by pressing down on the lock. The emergency release device is mainly used in an emergency state, such as when the power control system fails, to disengage the two for easy inspection and maintenance. A key hole is provided on the cover body. Insert the key into the key hole above the cover body and turn the key to activate the lock of the emergency release device, so that the hydraulic rod under the cover body will be unhooked from the emergency release device, and the manhole cover can be manually opened from outside the cover body.

[0015] Furthermore, the automatic opening device of the natural gas valve well cover of the utility model also includes a power-assisting mechanism; the power-assisting mechanism is parallel to the hydraulic rod, one end of which is connected to the side wall of the base, and the other end is connected to the inner wall of the cover body. The power-assisting mechanism includes a first telescopic rod and a second telescopic rod; the first telescopic rod and the second telescopic rod are respectively arranged on both sides of the hydraulic rod, and are symmetrical with the hydraulic rod as the central axis. The cover body of the utility model is connected to the base through a built-in four-bar structure, which realizes a horizontal lifting and flipping opening and closing method during the opening and closing process, ensuring that the sealing strip is not worn or squeezed.

[0016] Furthermore, the automatic opening device of the natural gas valve well cover of the utility model also includes a handle arranged on the inner wall of the cover body; the emergency release device is arranged between the hinge point and the center point of the cover body; the distance between the fixed point of the power-assisting mechanism and the cover body and the hinge point is L1, and the distance between the emergency release device and the hinge point is L2; ​​wherein L1 is greater than L2.

[0017] The automatic opening device for the natural gas valve well cover of the utility model is applicable to both round covers and square covers. For round covers: the base and cover plate are customized according to the size of the round cover, and are cast and processed into finished products. The original round cover plate is removed on site, and the customized base and cover plate are placed above the round wellhead, fixed with expansion bolts, and the base of the cover is covered with cement, and then the power system and control system of the cover are installed.

[0018] For square manhole covers: Since the existing stainless steel manhole covers and the base are connected by hinges, there is no need to customize the base and manhole cover separately. You only need to modify the side walls of the manhole cover and the wellhead, install a power system installation base at the appropriate position of the manhole cover, and chisel an appropriate angle on the side wall of the wellhead to achieve the angle of fully opening the manhole cover after installing the power system to facilitate the entry and exit of people and items. The entire modification process is simple, low-cost, and suitable for promotion.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] (1) Diversified opening functions: Remote control: The manhole cover can be opened and closed at the control center. On-site control: Authorized maintenance personnel at the control center can open and close the manhole cover with a remote control on site. Local button control: Open or close the manhole cover with the control button on the control box.

[0021] (2) Quick escape function: When in an emergency, outsiders can use a special key to open the manhole cover through the mechanical structure, and insiders can manually open the emergency mechanical switch to push open the manhole cover to escape, thereby achieving the purpose of escape. A power-assisting mechanism (8) is provided inside the manhole cover, and the manhole cover can be easily opened when manually opened mechanically.

[0022] (3) The manhole cover has a large opening angle: the opening angle is ≥75° and can be adjusted to provide maximum space for material input and personnel entry and exit.

[0023] (4) Communication method: The control information and monitoring information of the intelligent manhole cover of the utility model are standard electrical interface signals (RS-485 or DI / DO contact control). They can be transmitted to the monitoring center through terminal devices such as the main control unit to achieve the goal of centralized monitoring and centralized management.

[0024] (5) Safe and reliable control system: The electrical system is isolated from the manhole cover mechanical equipment, and the control system is all controlled by 24V safe voltage. The system will not cause personal injury under any circumstances.

[0025] (6) Wellhead foreign object detection and complete safety protection functions: Automatic detection of wellhead obstacles, the sensor device sends instructions to the control system, and the control manhole cover cannot be closed or stops suddenly; Safety protection function: When people or materials enter or exit, the manhole cover will not start the closing action. When the manhole cover is closing, if people or materials pass by, the manhole cover will automatically stop closing and return.

[0026] (7) Anti-theft function: After the manhole cover is closed, the hydraulic rod is in a retracted state and the manhole cover body is in a locked state and cannot be opened by external force. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an overall schematic diagram of the automatic opening device of the natural gas valve well cover of the utility model.

[0028] Figure 2 The utility model is a structural schematic diagram of a control system of an automatic opening device for a natural gas valve well cover.

[0029] Figure 3 It is a schematic diagram of the main structure of the automatic opening device for a natural gas valve well cover of the utility model when the cover body is opened.

[0030] Figure 4 It is a three-dimensional structural schematic diagram of the automatic opening device for a natural gas valve well cover of the utility model when the cover body is opened.

[0031] Figure 5 The utility model is a schematic diagram of the cover body structure of the automatic opening device of the natural gas valve well cover. DETAILED DESCRIPTION

[0032] The drawings in the embodiments provide a more detailed description of the technical solutions in the embodiments of the utility model. In the drawings, the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of the utility model, not all of them. The embodiments described below with reference to the drawings are exemplary and are intended to be used to explain the utility model, and should not be construed as limitations on the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. The embodiments of the utility model are described in detail below in conjunction with the drawings.

[0033] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0035] Example

[0036] This embodiment provides a natural gas valve well cover automatic opening device, such as Figure 1 As shown, it includes a cover body 1, a base 2, a hydraulic rod 3, a power system 4 and a control system 5; the cover body 1 and one side of the base 2 are hinged to form a hinge point; the power system 4 includes an integrated hydraulic motor group 41, a hydraulic cylinder 42, a solenoid valve, an oil block, an oil tank, and an oil pipe; the hydraulic motor group 41 is fixedly connected to the hydraulic cylinder 42; the solenoid valve is integrated in the hydraulic cylinder 42, which is not shown in the figure, wherein the oil block, the oil tank, and the oil pipe are integrated in the hydraulic cylinder 42, which are not shown in the figure; the lower end of the hydraulic rod 3 is connected to the hydraulic cylinder 42, and the upper end is connected to the The inner wall of the cover body 1 is hinged; the side wall of the base 2 is also provided with a plurality of sensors, including an open state detection sensor, a close and foreign object detection sensor, and a positioning sensor; the control system 5 is connected to the power system 4 and a plurality of sensors; it is used for the collection of the opening and closing states of the cover body 1, alarm judgment, logic processing, control output and remote communication; the switch state data of the manhole cover body detected by the sensor is transmitted to the control system 5, and then the power system 4 is remotely controlled by the control system 5 to realize the opening and closing of the cover body 1.

[0037] like Figure 2 As shown, the control system 5 includes an explosion-proof box and functional components; the functional components are placed in the explosion-proof box; the explosion-proof box is provided with an alarm indicator light 51, a power indicator light 52, an emergency stop button 53, a manhole cover opening button 54, and a manhole cover closing button 55. The control system 5 of this embodiment is wall-mounted and fixed to the wall by screws.

[0038] The wall edge of the base 2 is embedded with a sealing strip for waterproofing the manhole cover body. Figure 3 As shown, a waterproof junction box 6 is also provided on one side of the hydraulic cylinder 42. The waterproof junction box 6 is mainly designed for cables with interfaces to be installed in the waterproof junction box 6 during installation to avoid leakage and cable exposure and corrosion.

[0039] like Figure 3 As shown, the automatic opening device for the natural gas valve well cover of the utility model further includes an emergency release device 7, which is fixed to the inner wall of the cover body 1; the top of the hydraulic rod 3 is detachably connected to the emergency release device 7. Figure 4 As shown, the emergency release device 7 includes a base 71, a rotating shaft 72, and a lock 73; the base 71 is "U"-shaped, with first through holes on both sides and a second through hole on the bottom; the two ends of the rotating shaft 72 are respectively mounted on the first through holes; the lower end of the lock 73 is rotatably connected to the rotating shaft 72; the top of the hydraulic rod 3 passes through the second through hole and is movably connected to the lock 73; the hydraulic rod 3 is disengaged by pressing down the lock 73.

[0040] like Figure 5 As shown, the cover body 1 is locked with the base 2 in a closed state, and a key hole 10 is provided on the cover body 1. The key is inserted into the key hole 10 above the cover body 1, and the key is turned to start the emergency release device 7, so that the hydraulic rod 3 under the cover body 1 will be unhooked from the emergency release device 7, and the manhole cover can be manually opened from outside the cover body 1.

[0041] Combination Figure 3 As shown, the automatic opening device for the natural gas valve well cover of the utility model further includes a booster mechanism 8; the booster mechanism 8 is parallel to the hydraulic rod 3, one end of which is connected to the side wall of the base 2, and the other end is connected to the inner wall of the cover body 1. Figure 4 As shown, the power-assisting mechanism 8 includes a first telescopic rod 81 and a second telescopic rod 82; the first telescopic rod 81 and the second telescopic rod 82 are respectively arranged on both sides of the hydraulic rod 3, and are symmetrical with the hydraulic rod 3 as the central axis. The cover body 1 of the utility model is connected with the base 2 through a built-in four-bar structure, so as to realize a horizontal lifting and flipping opening and closing mode during the opening and closing process, and ensure that the sealing strip is not worn or squeezed.

[0042] Combination Figure 3 and Figure 4 As shown, the natural gas valve well cover automatic opening device of the utility model also includes a handle 9 arranged on the inner wall of the cover body 1; Figure 3As shown, the emergency release device 7 is arranged between the hinge point and the center point of the cover body 1; the distance between the fixing point of the power-assisting mechanism 8 and the cover body 1 and the hinge point is L1, and the distance between the emergency release device 7 and the hinge point is L2; ​​wherein L1 is greater than L2.

[0043] The above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. Although the utility model is described in detail with reference to the above preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model. Those skilled in the art can also make other changes within the spirit of the utility model and apply them to the design of the utility model, as long as they do not deviate from the technical effects of the utility model. These changes made according to the spirit of the utility model should be included in the scope of protection claimed by the utility model.

Claims

1. A natural gas valve well cover automatic opening device, characterized in that: It comprises a manhole cover body, a hydraulic rod (3), a power system (4) and a control system (5); The manhole cover body comprises a cover body (1) and a base (2); one side of the cover body (1) and the base (2) are hinged to form a hinge point; The power system (4) comprises an integrated hydraulic motor group (41), a solenoid valve, and a hydraulic cylinder (42); the hydraulic motor group (41) is fixedly connected to the hydraulic cylinder (42); the solenoid valve is integrated on one side or inside the hydraulic cylinder (42); the lower end of the hydraulic rod (3) is connected to the hydraulic cylinder (42), and the upper end is connected to the inner wall of the cover body (1); The side wall of the base (2) is also provided with a plurality of sensors; The control system (5) is connected to the power system (4) and the sensor; and is used for collecting the opening and closing status of the cover body (1), alarm judgment, logic processing, control output and remote communication; The sensor transmits the detected switch status data of the manhole cover body to a control system (5), and the control system (5) remotely controls the power system (4) to realize the switch of the cover body (1).

2. The automatic opening device for a natural gas valve well cover according to claim 1 is characterized in that: The sensors include an opening state detection sensor, a closing and foreign matter detection sensor, and a positioning sensor.

3. The automatic opening device for a natural gas valve well cover according to claim 2 is characterized in that: The control system (5) comprises an explosion-proof box and functional components; the functional components are placed in the explosion-proof box; the explosion-proof box is provided with an alarm indicator light (51), a power indicator light (52), an emergency stop button (53), a manhole cover opening button (54) and a manhole cover closing button (55).

4. The automatic opening device for a natural gas valve well cover according to claim 1, characterized in that: A sealing strip is embedded in the wall edge of the base (2) to prevent the manhole cover body from being waterproof.

5. The automatic opening device for a natural gas valve well cover according to claim 1, characterized in that: A waterproof junction box (6) is also provided on one side of the hydraulic cylinder (42).

6. The automatic opening device for a natural gas valve well cover according to claim 1, characterized in that: It also comprises an emergency release device (7), which is fixed to the inner wall of the cover body (1); the top of the hydraulic rod (3) is detachably connected to the emergency release device (7).

7. The automatic opening device for a natural gas valve well cover according to claim 6, characterized in that: The emergency release device (7) comprises a base (71), a rotating shaft (72), and a lock (73); the base (71) is in a "U" shape, with first through holes on both sides and a second through hole on the bottom; the two ends of the rotating shaft (72) are respectively mounted on the first through holes; the lower end of the lock (73) is rotatably connected to the rotating shaft (72); the top of the hydraulic rod (3) passes through the second through hole and is movably connected to the lock (73); the hydraulic rod (3) is released by pressing down the lock (73).

8. The automatic opening device for a natural gas valve well cover according to claim 6, characterized in that: It also includes a power-assisting mechanism (8); the power-assisting mechanism (8) is parallel to the hydraulic rod (3), one end of which is connected to the side wall of the base (2), and the other end of which is connected to the inner wall of the cover body (1).

9. The automatic opening device for a natural gas valve well cover according to claim 8, characterized in that: The power assist mechanism (8) comprises a first telescopic rod (81) and a second telescopic rod (82); the first telescopic rod (81) and the second telescopic rod (82) are respectively arranged on both sides of the hydraulic rod (3) and are symmetrical with the hydraulic rod (3) as the central axis.

10. The automatic opening device for a natural gas valve well cover according to claim 8, characterized in that: It also includes a handle (9) arranged on the inner wall of the cover body (1); the emergency release device (7) is arranged between the hinge point and the center point of the cover body (1); the distance between the fixing point of the power-assisting mechanism (8) and the cover body (1) and the hinge point is L1, and the distance between the emergency release device (7) and the hinge point is L2; ​​wherein L1 is greater than L2.

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