Gas valve well

Abstract

The utility model belongs to the field of valve well equipment, and provides a gas valve well which comprises a main valve well, a gas inlet well and a gas exhaust well. An opening is formed in the top of the main valve well, and a closed well lid is arranged at the opening; the air inlet well is communicated with the main valve well through an air inlet pipeline; an air inlet well water outlet is formed in the bottom of the air inlet well; the top of the air inlet well is open; the exhaust well is communicated with the main valve well through an exhaust pipeline; a fan is arranged in the exhaust pipeline; an exhaust shaft water outlet is formed in the bottom of the exhaust shaft; the top of the exhaust shaft is provided with an exhaust hole or an opening. The gas valve well is simple and reliable in structure, water can be effectively prevented from flowing into the main valve well, whether gas leaks in the valve well or not can be accurately monitored, an alarm can be given out in time, and practicability is high.

Description

Technical Field

[0001] The utility model belongs to the field of valve well equipment, and particularly relates to a gas valve well which can efficiently ventilate and exhaust gas. Background Art

[0002] A gas valve well is an important device for regulating and controlling key facilities in a natural gas network. It generally consists of a valve well cover, a valve well body, gas pipelines, valves, monitoring instruments and other devices. The valve well is generally used for commissioning, maintenance and control of natural gas pipelines. During the normal operation of the gas valve well, rain or greening irrigation may cause water to enter the valve well, which is not conducive to the normal operation of the equipment and may also generate biogas. At the same time, due to corrosion, natural disasters and third-party damage, natural gas pipelines often leak, and the leaked gas will accumulate in the gas valve well, posing a great potential safety hazard.

[0003] At present, a method of using a valve well methane monitor to monitor the methane concentration value in the gas valve well is adopted for leakage warning, and then personnel arrive at the scene for treatment. However, it usually takes a long time from the warning to the arrival of the personnel at the scene. During this period, the accumulation of natural gas leakage or biogas has continued for a long time, and the methane concentration value may have approached the explosion limit, significantly increasing the risk coefficient. Summary of the Utility Model

[0004] In order to solve at least one of the above problems existing in the prior art, the utility model provides a gas valve well, which includes a main valve well, an intake well and an exhaust well, wherein:

[0005] An opening is provided at the top of the main valve well; a sealed manhole cover is provided at the opening; a valve well monitor is arranged in the main valve well;

[0006] The intake well is connected to the main valve well through an intake pipeline; an intake well drain is provided at the bottom of the intake well; the top of the intake well is open;

[0007] The exhaust well is connected to the main valve well through an exhaust pipeline; a fan is arranged in the exhaust pipeline; an exhaust well drain is provided at the bottom of the exhaust well; an exhaust hole is provided at the top of the exhaust well or an opening is provided at the top of the exhaust well.

[0008] A safety manhole cover is further provided above or below the sealed manhole cover.

[0009] Preferably, the valve well monitor is arranged on the well wall of the main valve well close to the sealed manhole cover.

[0010] Preferably, the height of the intake pipeline is higher than the bottom of the intake well.

[0011] Preferably, the depth of the intake well is shallower than that of the main valve well.

[0012] Preferably, a manhole cover is provided at the top opening of the intake well;

[0013] A plurality of ventilation holes are provided at the edge of the manhole cover.

[0014] Preferably, the height of the exhaust pipe is higher than the bottom of the exhaust well;

[0015] The depth of the exhaust well is shallower than that of the main valve well.

[0016] Preferably, the fan is an axial flow fan.

[0017] Preferably, a manhole cover is provided at the opening provided at the top of the exhaust well;

[0018] A plurality of ventilation holes are provided at the edge of the manhole cover.

[0019] Preferably, the gas valve well further includes a control system;

[0020] The control system includes a data processing module, a monitoring and warning module, and a communication module;

[0021] The monitoring and warning module is connected to the data processing module, receives a control signal from the data processing module, and issues an alarm signal;

[0022] The communication module is communicatively connected to the data processing module, and is used to send the information data processed by the data processing module to the staff; and send the control information sent by the staff to the data processing module;

[0023] The data processing module is connected to the valve well monitor, the fan, the data processing module, the monitoring and warning module, and the communication module.

[0024] The gas valve well provided by the present utility model has a simple and reliable structure, can effectively prevent water from flowing into the main valve well and causing damage to the equipment in the valve well, and prevent the occurrence of false alarms caused by the fermentation of water and organic matter to produce biogas, and the gas valve well can also accurately monitor whether there is gas leakage in the valve well and issue an alarm in time, and can also discharge the leaked gas from the gas valve well in time, significantly reducing the risk of the methane concentration reaching the explosion limit, with high safety and strong practicability. Description of the Drawings

[0025] Figure 1 is a schematic structural diagram of the gas valve well provided by the present utility model;

[0026] Figure 2 is a schematic structural diagram of the manhole covers of the intake well and the exhaust well of the gas valve well provided by the present utility model;

[0027] Figure 3 Structural schematic diagram of the control system of the gas valve well provided by the present utility model;

[0028] The reference numerals in the figure are explained as follows:

[0029] 1 - Ground surface; 2 - Air inlet hole; 3 - Air inlet well; 4 - Drainage outlet of the air inlet well; 5 - Air inlet pipeline; 6 - Gas pipeline; 7 - Main valve well; 8 - Sealed manhole cover; 9 - Valve well monitor; 10 - Valve; 11 - Outlet pipeline; 12 - Fan; 13 - Exhaust hole; 14 - Drainage outlet of the exhaust well; 15 - Exhaust well. Specific embodiments

[0030] To make the technical solutions, objectives, and advantages of the present utility model clearer, the present utility model will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model.

[0031] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0032] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For the fields of electricity and communication, it can be a wired connection or a wireless connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] The present utility model provides a gas valve well with efficient ventilation and exhaust, which can effectively solve the problems of water ingress, water leakage, and untimely treatment of gas leakage in existing gas valve wells.

[0034] As Figure 1 shown, the gas valve well provided by the present utility model includes a main valve well 7, an air inlet well 3, and an exhaust well 15. The main valve well 7, the air inlet well 3, and the exhaust well 15 can all be arranged below the ground 1.

[0035] As Figure 1 shown, the main valve well 7 can be arranged between the intake well 3 and the exhaust well 15. The gas pipeline 6 passes through the main valve well 7. In order to facilitate the maintenance and control of the opening and closing of the gas pipeline, a valve 10 is arranged on the gas pipeline 6. An opening is arranged at the top of the main valve well 7 to facilitate the staff to enter the main valve well 7 for work; a sealed manhole cover 8 is arranged at the opening, which can prevent water and sundries from entering the main valve well 7 and damaging the gas facilities in the main valve well 7, and can also effectively avoid the generation of biogas. Preferably, a safety manhole cover (not shown) can also be arranged above or below the sealed manhole cover 8 to effectively avoid the occurrence of the displacement of the sealed manhole cover 8 caused by external forces (such as being run over by a motor vehicle, etc.), resulting in the sealing failure of the main valve well 7 or the occurrence of the situation that people or animals fall into the main valve well 7 due to the movement of the sealed manhole cover 8 and cause harm. The valve well monitor 9 is arranged in the main valve well 7. For example, the valve well monitor 9 can be arranged on the well wall of the main valve well 7 close to the sealed manhole cover 8. The valve well monitor 9 can monitor the methane concentration value in the main valve well 7 to achieve the purpose of monitoring the leakage of the gas pipeline.

[0036] As Figure 1 shown, the intake well 3 is arranged on the right side of the main valve well 7. The intake well 3 is connected to the main valve well 7 through the intake pipeline 5. The height of the intake pipeline 5 is higher than the bottom of the intake well 3 to minimize the probability of water entering the main valve well 7 through the intake pipeline 5. A drain outlet 4 of the intake well is arranged at the bottom of the intake well 3 to drain the water entering the intake well 3. The depth of the intake well 3 can be shallower than that of the main valve well 7 to save costs and facilitate the introduction of fresh air into the main valve well 7. When the intake well 3 is arranged at a position where no people or vehicles pass by, the top of the intake well 3 is open to facilitate the entry of air. A manhole cover 16 can also be arranged at the top opening of the intake well 3 to reduce the probability of external sundries entering the intake well 3 and blocking the intake pipeline 5. As Figure 2 shown, in a preferred embodiment, a plurality of ( Figure 2 12 in the figure) ventilation holes are arranged at the edge of the manhole cover 16 to strengthen the ventilation. Further, the edge of the manhole cover 16 is higher than the middle part to reduce the probability of the ventilation holes being blocked.

[0037] As Figure 1As shown in the figure, the exhaust well 15 is arranged on the left side of the main valve well 7. The exhaust well 15 is connected to the main valve well 7 through an exhaust pipeline 11. The height of the exhaust pipeline 11 is higher than the bottom of the exhaust well 15 to minimize the probability of water entering the main valve well 7 through the exhaust pipeline 11. A blower 12 is also arranged in the exhaust pipeline 11 to form a gas flow direction from the intake well 3 through the main valve well 7 and reaching the exhaust well 15, so as to timely discharge the leaked gas in the gas pipeline 6. The blower 12 is preferably an axial flow blower. A drain outlet 14 of the exhaust well is arranged at the bottom of the exhaust well 15 to drain the water entering the exhaust well 15. The depth of the exhaust well 15 can be shallower than that of the main valve well 7 to save costs and facilitate discharging the leaked gas in the main valve well 7. An exhaust hole 13 is arranged at the top of the exhaust well 15 to facilitate discharging the gas. When the exhaust well 15 is arranged at a position where no people or vehicles pass by, the exhaust hole 13 may not be arranged, but an opening is arranged at the top of the exhaust well 15; or further a manhole cover 16 is arranged at the opening to reduce the probability of external sundries entering the exhaust well 15 and blocking the exhaust pipeline 11. As Figure 2 shown, in a preferred embodiment, a plurality of ( Figure 2 12 in the figure) ventilation holes 17 are arranged at the edge of the manhole cover 16 to enhance ventilation. Further, the edge of the manhole cover 16 is higher than the middle part to reduce the probability of the ventilation holes 17 being blocked.

[0038] In a preferred embodiment, as Figure 3 shown, the gas valve well is further provided with a control system. The control system includes a data processing module, a monitoring and warning module, and a communication module.

[0039] The monitoring and warning module is connected to the data processing module, receives a control signal from the data processing module, and emits an alarm signal (such as a sound, light, or electrical signal) to remind the security personnel to pay attention to gas leakage.

[0040] The communication module is communicatively connected to the data processing module to send the information data processed by the data processing module to the staff; it can also transmit the control information (such as methane concentration threshold setting information, alarm mode, alarm interval, sampling mode of the valve well monitor 9, etc.) sent by the staff to the data processing module.

[0041] The data processing module is connected to the valve well monitor 9, the fan 12, the data processing module, the monitoring and warning module, and the communication module. The data processing module can receive and process the methane concentration information monitored by the valve well monitor 9, and process it to judge whether there is gas leakage and the situation of the leakage; when the data processing module judges that the gas leakage exceeds the threshold, it issues an instruction to the monitoring and warning module to start the gas leakage warning; at the same time, the data processing module will also control the operation of the fan 12 according to the judged gas leakage situation to strengthen ventilation and exhaust and quickly reduce the methane concentration in the well.

[0042] By setting up the control system, it is possible to quickly detect, respond to, and process in the first instance when the methane concentration exceeds the safe range, ensuring that the gas in the valve well is diluted and discharged in a timely manner, and improving the overall safety and reliability.

[0043] For the gas valve well provided by the present utility model, in order to prevent water from flowing into the main valve well, first, the manhole cover of the main valve well is set as a sealed manhole cover, which is convenient for maintenance personnel to enter and exit during maintenance and can also prevent water from flowing in; second, drain ports are provided at the bottoms of the intake well and the exhaust well to drain the water flowing in from the intake holes and the exhaust holes, thereby effectively avoiding water from entering the main valve well. Through the above two settings, while taking into account convenient maintenance and improving ventilation efficiency, the problem of water flowing into the valve well is effectively solved, and the overall protection function and operation reliability are improved.

[0044] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A gas valve well, characterized in that: It includes a main valve well, an air intake well and an exhaust well, where: An opening is provided at the top of the main valve well; a sealed manhole cover is provided at the opening; a valve well monitor is arranged inside the main valve well; The air intake well is connected to the main valve well through an air intake pipe; a drain opening of the air intake well is provided at the bottom of the air intake well; the top of the air intake well is open; The exhaust well is connected to the main valve well through an exhaust pipe; a fan is arranged inside the exhaust pipe; a drain opening of the exhaust well is provided at the bottom of the exhaust well; an exhaust hole is provided at the top of the exhaust well or an opening is provided at the top of the exhaust well.

2. The gas valve well according to claim 1, wherein: A safety manhole cover is further provided above or below the sealed manhole cover.

3. The gas valve well according to claim 1, wherein: The valve well monitor is arranged on the well wall of the main valve well near the sealed manhole cover.

4. The gas valve well according to claim 1, wherein: The height of the air intake pipe is higher than the bottom of the air intake well.

5. The gas valve well according to claim 1, wherein: The depth of the air intake well is shallower than that of the main valve well.

6. The gas valve well according to claim 1, wherein: A manhole cover is provided at the opening at the top of the air intake well; A plurality of air exchange holes are provided at the edge of the manhole cover.

7. The gas valve well according to claim 1, wherein: The height of the exhaust pipe is higher than the bottom of the exhaust well; The depth of the exhaust well is shallower than that of the main valve well.

8. The gas valve well according to claim 1, wherein: The fan is an axial flow fan.

9. The gas valve well according to claim 1, wherein: A manhole cover is provided at the opening provided at the top of the exhaust well; A plurality of air exchange holes are provided at the edge of the manhole cover.

10. The gas valve well according to claim 1, wherein: The gas valve well further includes a control system; The control system includes a data processing module, a monitoring and warning module and a communication module; The monitoring and warning module is connected to the data processing module, receives a control signal from the data processing module and issues an alarm signal; The communication module is communicatively connected to the data processing module, and is used to send the information data processed by the data processing module to the staff; and send the control information sent by the staff to the data processing module; The data processing module is connected to the valve well monitor, the fan, the data processing module, the monitoring and warning module and the communication module.

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