Intelligent gas valve

Abstract

The utility model discloses an intelligent gas valve which comprises a first pressure sensor arranged at the gas inlet end of the intelligent gas valve; the second pressure sensor is arranged at the gas outlet end of the intelligent gas valve; the flow sensor is arranged at the gas outlet end of the intelligent gas valve; a controller is arranged on the main control board, and the main control board is electrically connected with the first pressure sensor, the second pressure sensor and the flow sensor. According to the utility model, whether the gas pipeline is abnormal can be diagnosed according to the data acquired by the plurality of sensors.

Description

Technical Field

[0001] The utility model relates to the technical field of gas valves, in particular to an intelligent gas valve. Background Art

[0002] With the advancement of intelligent technology, many smart gas valves have appeared on the market. However, these smart gas valves currently available typically only have a pressure sensor at the outlet. This only measures the gas pressure at that outlet. This single parameter makes it difficult to assess the condition of the gas pipeline. Furthermore, if the outlet pressure sensor is damaged, statistical analysis becomes impossible, causing significant inconvenience to the user.

[0003] Therefore, it is necessary to develop a new intelligent gas valve to facilitate users to diagnose the gas conditions of the gas pipe network where the intelligent gas valve is located. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, one object of the present invention is to provide an intelligent gas valve that can facilitate users to diagnose the condition of the gas pipeline.

[0005] The technical solution adopted in this utility model is:

[0006] In a first aspect, the utility model provides an intelligent gas valve, comprising: a first pressure sensor, arranged at the air inlet end of the intelligent gas valve; a second pressure sensor, arranged at the air outlet end of the intelligent gas valve; a flow sensor, arranged at the air outlet end of the intelligent gas valve; a main control board, on which a controller is provided, which is electrically connected to the first pressure sensor, the second pressure sensor and the flow sensor, respectively.

[0007] The system further includes: a temperature sensor installed on the main control board and electrically connected to the controller.

[0008] It also includes: a wireless communication module installed on the main control board and electrically connected to the controller, and the wireless communication module communicates with the user's terminal equipment.

[0009] Wherein, the flow sensor is a thermal flow direction sensor.

[0010] The first pressure sensor is arranged on a first pressure sensor PCB, the second pressure sensor and the flow sensor are arranged on a second pressure sensor PCB, and the first pressure sensor PCB and the second pressure sensor PCB are arranged on the smart gas valve through a sensor box.

[0011] It also includes: buttons with indicator lights for opening and closing valves, network distribution and status indication.

[0012] It also includes a valve actuator and a valve body valve seal. When the main control board determines that there is an abnormality based on the data from the sensor, it sends an instruction to the valve actuator. The valve actuator can drive the valve body valve seal through a motor or electromagnetic drive pull rod to cut off the gas and provide protection.

[0013] Wherein, the valve actuator is a valve stem drive assembly.

[0014] The beneficial effects of the utility model are:

[0015] The utility model sets a first pressure sensor at the air inlet end of the intelligent gas valve, and sets a flow sensor and a second pressure sensor at the air outlet end of the intelligent gas valve, and diagnoses whether there is any abnormality in the gas pipeline based on the data collected by the multiple sensors.

[0016] In addition, since the present invention has multiple sensors, fault diagnosis can be accurately performed based on the correlation and comparison of parameters of the multiple sensors.

[0017] In addition, since the utility model has multiple sensors, when one of the sensors is damaged, the operation of the intelligent gas valve is not affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional diagram of an embodiment of the intelligent gas valve of the utility model;

[0019] Figure 2 yes Figure 1 A three-dimensional image from another angle;

[0020] Figure 3 yes Figure 1 A three-dimensional image from another angle;

[0021] Figure 4 yes Figure 1 sectional view of

[0022] Figure 5 yes Figure 1 Exploded diagram. DETAILED DESCRIPTION

[0023] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0024] Please also refer to Figures 1 to 5 .like Figure 5As shown, the smart gas valve includes a sensor box 1, a first pressure sensor PCB2, a first pressure sensor 3, a second pressure sensor PCB4, a second pressure sensor 5, a flow sensor 6, a data cable 7, a sensor box sealing gasket 8, a valve seat 9, a valve body valve seal 10, a valve cover 11, a valve stem drive assembly 12, a main control board 13, a power socket 14, a temperature sensor 15, a button with an indicator light 16, a protective cover 17, a manual switch valve button 18 and a decorative cover 19.

[0025] The first pressure sensor 3 is mounted on the first pressure sensor PCB 2, and the second pressure sensor 5 and flow sensor 6 are mounted on the second pressure sensor PCB 4. The first pressure sensor PCB 2 and the second pressure sensor PCB 4 are mounted on the smart gas valve via a sensor box 1.

[0026] like Figure 4 As shown, the first pressure sensor 3 is arranged at the air inlet end of the smart gas valve; the second pressure sensor 5 is arranged at the air outlet end of the smart gas valve; and the flow sensor 6 is also arranged at the air outlet end of the smart gas valve.

[0027] The main control board 13 is provided with a controller (not shown), which is electrically connected to the first pressure sensor 3, the second pressure sensor 5, and the flow sensor 6. The main control board 13 is also provided with a temperature sensor 15 and a wireless communication module (not shown), both of which are electrically connected to the controller.

[0028] Preferably, the flow sensor is a thermal flow direction sensor.

[0029] Among them, the button 16 with indicator light is used for opening and closing the valve, distributing the network and indicating the status.

[0030] The working method of this embodiment is:

[0031] The first pressure sensor 3 is used to measure the inlet pressure of the smart gas valve, the second pressure sensor 5 is used to measure the outlet pressure of the smart gas valve, the flow sensor 6 is used to measure the flow rate, medium temperature, and flow direction of the smart gas valve, and the temperature sensor 15 is used to measure the ambient temperature. The Bernoulli flow equation can be used to calculate the flow rate under this pressure difference based on the pressure difference between the first pressure sensor 3 and the second pressure sensor 5. Alternatively, the flow rate of the smart gas valve can be directly measured using the flow sensor 6.

[0032] Through the above four sensors, the following parameters of the smart gas valve can be detected: inlet pressure, outlet pressure, inlet and outlet pressure difference, flow rate, gas flow rate, flow direction, ambient temperature, medium temperature, etc.

[0033] (1) In the closed valve state, such as when the pipeline is shut down or the outdoor pipeline leaks, the first pressure sensor 3 is located at the inlet end. At this time, the first pressure sensor 3 detects low pressure. The smart gas valve can promptly remind the user of the low external pipeline pressure and report the problem in advance. Products on the market that only have a pressure sensor at the outlet end cannot determine this.

[0034] (2) If a sudden gas outage or leak in the outdoor pipe network occurs during normal operation of the gas appliance, the flow rate change measured by flow sensor 7 and the pressure difference change between the two pressure sensors can be used to determine the cause and close the valve in time to avoid explosion caused by backfire. Products on the market that only have a pressure sensor at the gas outlet cannot determine this.

[0035] (3) When pressure sensors 3, 5, or flow sensor 6 fail, the fault can be accurately eliminated by comparing the parameters between multiple sensors. During the period after the sensor failure is reported for repair, the overall operation and safety protection of the valve body will not be affected, and the user's gas demand will not be affected. Products on the market that only have an outlet pressure sensor will not continue to work once damaged, which will cause great inconvenience to the user.

[0036] (4) When autonomously detecting pipeline leaks, after the gas appliance is turned off, the smart gas valve is closed and the pressure in the pipeline between the smart gas valve and the gas appliance is maintained. If the pressure drops or there is flow, there is a gas leak and the smart gas valve issues an alarm signal. Products on the market that only have a gas outlet pressure sensor can only determine whether it is a micro leak or a major leak based on the pressure drop rate. If it is a micro leak, it takes a long time to detect. This embodiment can quickly determine whether it is a micro leak or a major leak by comparing the pressure drop rate with the flow rate, and quickly issue an early warning.

[0037] (5) After the controller of the main control board 13 receives the data from the above four sensors, it determines whether the data is abnormal. If it is abnormal, it sends a command to the valve actuator. The valve actuator of this embodiment is the valve stem drive assembly 12. The valve actuator can drive the valve body valve seal 10 to move and cut off the gas through a motor drive or an electromagnetic drive pull rod, and perform high-temperature valve closing, over-current valve closing, over-pressure valve closing, under-pressure valve closing, gas stop valve closing, and gas leakage protection, thereby providing protection.

[0038] (6) In addition, when the controller of the main control board 13 determines that an abnormality occurs, it can notify the user's terminal device, such as a mobile phone, tablet computer, etc., through the wireless communication module. The user can also directly control the smart gas valve on the terminal device.

[0039] It should be noted that, due to the high functional integration of current sensor chips, the first pressure sensor 3, the second pressure sensor 5, and the flow sensor 6 can also have a temperature detection function, and can collect the gas temperature. If the gas temperature is too high, the gas supply is cut off.

[0040] The above is a specific description of the preferred implementation of the present invention, but the invention of the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An intelligent gas valve, characterized in that: include: A first pressure sensor is provided at the air inlet end of the intelligent gas valve; A second pressure sensor is provided at the gas outlet end of the intelligent gas valve; A flow sensor is provided at the gas outlet of the intelligent gas valve; A main control board is provided with a controller, which is electrically connected to the first pressure sensor, the second pressure sensor and the flow sensor respectively.

2. The intelligent gas valve according to claim 1, characterized in that: Also includes: The temperature sensor is installed on the main control board and is electrically connected to the controller.

3. The intelligent gas valve according to claim 1, characterized in that: Also includes: A wireless communication module is installed on the main control board and is electrically connected to the controller. The wireless communication module communicates with the user's terminal device.

4. The intelligent gas valve according to claim 1, characterized in that: The flow sensor is a thermal flow direction sensor.

5. The intelligent gas valve according to claim 1, characterized in that: The first pressure sensor is arranged on a first pressure sensor PCB, the second pressure sensor and the flow sensor are arranged on a second pressure sensor PCB, and the first pressure sensor PCB and the second pressure sensor PCB are arranged on the smart gas valve through a sensor box.

6. The intelligent gas valve according to claim 1, characterized in that: Also includes: Button with indicator light, used for opening and closing valves, network distribution and status indication.

7. The intelligent gas valve according to any one of claims 1 to 6, characterized in that: It also includes a valve actuator and a valve body valve seal. When the main control board determines that there is an abnormality based on the data from the sensor, it sends an instruction to the valve actuator. The valve actuator can drive the valve body valve seal to move through a motor or electromagnetic drive pull rod to cut off the gas, thereby providing protection.

8. The intelligent gas valve according to claim 7, characterized in that: The valve actuator is a valve stem drive assembly.

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