Ultrasonic fuel gas detection device

Abstract

The embodiment of the utility model provides an ultrasonic fuel gas detection device. The ultrasonic fuel gas detection device comprises a fuel gas channel, a valve and an ultrasonic detection module, wherein the fuel gas channel is of a hollow pipeline structure and can be in any shape, the front end of the fuel gas channel is a fuel gas inlet end, and the rear end of the fuel gas channel is a fuel gas outlet end; the valve is arranged at the front end of the gas channel, the valve is used for being closed to prevent gas from entering the gas channel, and when the valve is opened, gas supply circulation can be recovered; the ultrasonic detection module is arranged in the fuel gas channel and used for starting detection when the valve is opened so as to judge whether fuel gas leaks or not. Compared with the prior art, the ultrasonic gas detection device has the advantages that the valve is closed and opened within the preset time, and related data are detected through the ultrasonic detection module so as to judge whether gas leakage occurs or not.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of ultrasonic gas leak detection, and in particular to an ultrasonic gas detection device. Background Art

[0002] With the widespread use of natural gas, the use of gas meters has also increased, and their functions have become more comprehensive. With the construction and popularization of gas transmission pipelines, gas meters have sprung up like mushrooms after rain. From mechanical to electronic, from traditional diaphragm meters to fully electronic ultrasonic gas meters, new concepts and technologies continue to emerge, and the accuracy and application range of various flow meters are constantly improving.

[0003] However, during gas use, whether for industrial, commercial, or domestic purposes, gas leaks can lead to accidents and cause varying degrees of harm. However, existing gas leak detection devices rely solely on pressure sensors to detect pressure changes. This process is time-consuming, inaccurate, and unable to detect even small leaks. Furthermore, they require multiple sensors, and additional instruments are required for re-testing and confirmation after leak detection, resulting in high costs and an inability to accurately measure the specific amount of gas leakage. Utility Model Content

[0004] In view of this, an embodiment of the present application provides an ultrasonic gas detection device to solve the above-mentioned problem.

[0005] According to an embodiment of the present application, an ultrasonic gas detection device is provided, comprising:

[0006] Gas channels;

[0007] a valve disposed at the front end of the gas passage, the valve being configured to close to prevent gas from entering the gas passage and open to resume gas circulation; and

[0008] An ultrasonic detection module is provided in the gas passage, and is used for detecting when the valve is opened to determine whether a gas leak occurs.

[0009] Compared with the existing technology, the ultrasonic gas detection device provided in this application adopts a valve set at the front end of the gas channel, and cuts off and restores the flow of gas into the gas channel by closing and opening the valve, and sets the ultrasonic detection module on the gas channel to detect the relevant data in the gas pipeline. After the valve is closed, when the valve is opened, the ultrasonic detection module is turned on to detect and obtain the relevant data in the gas channel, so as to determine whether a gas leak occurs, and the leakage amount can be calculated based on the relevant data.

[0010] In one embodiment, the ultrasonic gas detection device further includes a control module electrically connected to the valve and the ultrasonic detection module for controlling the opening and closing of the valve and the ultrasonic detection module, respectively. Providing the control module to control the valve and the ultrasonic detection module facilitates use of the ultrasonic gas detection device.

[0011] In one embodiment, the ultrasonic gas detection device includes a housing having an air inlet, an air outlet, and a storage space. The valve is positioned adjacent to the air inlet and controls the flow of gas through the air inlet. The gas channel is positioned within the storage space, with one end of the gas channel receiving gas from the air inlet and the other end connected to the air outlet. The housing protects the gas channel and other internal components, thereby extending the product's service life.

[0012] In one embodiment, the accommodating space includes a first accommodating space, the gas channel is located in the first accommodating space, and the gas from the air inlet is used to enter one end of the gas channel through the first accommodating space.

[0013] In one embodiment, the storage space further includes a second storage space that is airtight and independent from the first storage space, the second storage space being used to accommodate the control module; the housing includes an outer wall and a partition wall disposed within the outer wall, the outer wall being used to enclose the storage space, the partition wall dividing the storage space into the first storage space and the second storage space, and the valve and / or the ultrasonic detection module are further used to electrically connect to the control module via an electrical connector that passes through the outer wall or the partition wall. Providing two independent and airtight storage spaces can separate electrical components such as the control module from the storage space for gas circulation, thereby ensuring the safety of gas circulation and monitoring and improving product safety.

[0014] In one embodiment, the outer wall includes a top wall, a bottom wall, and a side wall connected between the top wall and the bottom wall, and the air inlet and the air outlet are both arranged on the side wall and are relatively arranged or relatively staggered, or the air inlet and the air outlet are both arranged on at least one of the top wall, the bottom wall or the side wall.

[0015] In one embodiment, the ultrasonic gas detection device further includes an early warning module for issuing early warning information, wherein the early warning module is electrically or communicatively connected to the control module. The early warning module can remind the user of relevant preset information, thereby facilitating the user to understand the gas situation.

[0016] In one embodiment, the early warning module further includes a display for displaying the working status of the ultrasonic gas detection device and / or the amount of gas leakage. The display can be configured to display preset information, thereby serving as a reminder to the user.

[0017] In one embodiment, the ultrasonic detection module includes a first ultrasonic sensor and a second ultrasonic sensor disposed in the gas passage. The first ultrasonic sensor is configured to emit a first ultrasonic signal, and the second ultrasonic sensor is configured to receive the first ultrasonic signal. Providing two ultrasonic sensors to transmit and receive ultrasonic signals, respectively, enables detection of the signal's time of flight in the gas passage.

[0018] In one embodiment, the ultrasonic gas detection device further includes a pressure sensor disposed in the gas channel; an airflow straightener disposed at the front end of the gas channel; a first sealing member disposed between the air inlet and the valve; and a second sealing member disposed between the gas channel and the air outlet. The pressure sensor increases air pressure detection, thereby enabling multi-directional detection of gas leaks and improving detection accuracy. The airflow straightener is provided to rectify the gas in the gas channel, thereby rapidly reducing the gas flow rate therein and facilitating subsequent detection. The sealing member ensures the airtightness of the ultrasonic gas detection device, thereby improving the detection accuracy of the ultrasonic detection module. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 This is a three-dimensional diagram of an ultrasonic gas detection device according to an embodiment of the present application;

[0021] Figure 2 yes Figure 1 A three-dimensional view of the ultrasonic gas detection device from another angle;

[0022] Figure 3 for Figure 1 The reference diagram of the ultrasonic gas detection device in use is shown;

[0023] Figure 4 yes Figure 1 An exploded schematic diagram of an ultrasonic gas detection device is shown;

[0024] Figure 5 yes Figure 1 An exploded schematic diagram of the ultrasonic gas detection device shown in another angle;

[0025] Figure 6 yes Figure 1 A schematic cross-sectional view of the ultrasonic gas detection device along line VI-VI is shown;

[0026] Figure 7 yes Figure 1 The diagram shows a partial structural decomposition diagram of the ultrasonic gas detection device.

[0027] Description of reference numerals:

[0028] 100. Ultrasonic gas detection device; 10. Gas channel; 20. Valve; 30. Ultrasonic detection module; 31. First ultrasonic sensor; 32. Second ultrasonic sensor; 41. Circuit board; 50. Housing; 50a. First accommodating space; 50b. Second accommodating space; 51. Air inlet; 52. Air outlet; 53. Outer wall; 531. Top wall; 532. Bottom wall; 533. Side wall; 54. Partition wall; 55. Cover; 60. Display; 70. Air flow straightener; 81. First sealing member; 82. Second sealing member. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field should fall within the scope of protection of the embodiments of the present application.

[0030] The specific implementation of the embodiment of the present application is further explained below in conjunction with the accompanying drawings of the embodiment of the present application.

[0031] See also Figure 1 and Figure 2 , showing stereoscopic views of the ultrasonic gas detection device 100 provided in an embodiment of the present application at different angles.

[0032] See also Figure 3 , Figure 3A reference diagram of the usage status of the ultrasonic gas detection device 100 provided in an embodiment of the present application is provided. The ultrasonic gas detection device 100 is installed on a gas pipeline. One end of the ultrasonic gas detection device 100 is connected to the gas supply end of the gas, and the other end is connected to the gas consumption end of the gas. The gas supply end is the gas input end, and the gas consumption end is the gas output end. Gas appliances that use gas, such as gas stoves and gas water heaters, can be connected. The gas enters the gas consumption end after passing through the ultrasonic gas detection device 100, so that the ultrasonic gas detection device 100 can detect whether a gas leak occurs in the gas pipeline.

[0033] Specifically, see Figure 4 and Figure 5 The ultrasonic gas detection device 100 provided in this embodiment includes a gas channel 10, a valve 20, and an ultrasonic detection module 30. The gas channel 10 is a hollow pipe structure that allows gas to flow through it. The cross-section of the gas channel 10 can be any shape, such as circular or square. Specifically, in this embodiment, the gas channel 10 is a strip or columnar structure, with the front end of the gas channel 10 being the end where gas enters and the rear end being the end where gas exits. The valve 20 is disposed at the front end of the gas channel 10. The valve 20 is closed to prevent gas from entering the gas channel 10. When the valve 20 is opened, gas supply and flow can be restored. The ultrasonic detection module 30 is disposed in the gas channel 10. When the valve 20 is opened, the ultrasonic detection module 30 is activated to detect whether a gas leak has occurred. The valve 20 is disposed at the front end of the gas channel 10 and can be disposed on the gas channel 10 or in the direction of the front end of the gas channel 10 to control the shutoff and flow of gas.

[0034] Specifically, the ultrasonic detection module 30 is arranged in the gas channel 10, and one end thereof for emitting and receiving ultrasonic signals is located in the gas channel 10, so that the emitted ultrasonic signal can fly in the gas channel 10 and be received, so that the flight speed of the ultrasonic signal in the gas channel 10 can be calculated according to the emission and reception time of the signal, and then other relevant data can be calculated.

[0035] In order to ensure the safety during gas use and leak detection, the valve 20 adopts a sealed and insulated shell structure to isolate the electronic components inside from the gas flowing through it, thereby avoiding the occurrence of gas accidents.

[0036] Compared with the prior art, the ultrasonic gas detection device 100 provided in the present application adopts a method of setting a valve 20 at the front end of the gas channel 10, and cutting off and restoring the flow of gas into the gas channel 10 by closing and opening the valve 20, and setting the ultrasonic detection module 30 on the gas channel 10 to detect relevant data of the gas in the gas pipeline. After the valve 20 is closed, when the valve 20 is opened, the ultrasonic detection module 30 is turned on for detection to obtain relevant data in the gas channel 10 for determining whether a gas leak occurs.

[0037] Furthermore, the ultrasonic gas detection device 100 further includes a control module electrically connected to the valve 20 and the ultrasonic detection module 30 for controlling the opening and closing of the valve 20 and the ultrasonic detection module 30, respectively. Providing the control module to control the valve 20 and the ultrasonic detection module 30 facilitates the use of the ultrasonic gas detection device 100.

[0038] Specifically, the ultrasonic gas detection device 100 includes a circuit board 41, which is electrically connected to the valve 20 and the ultrasonic detection module 30. The control module is integrated into the circuit board 41. A wireless communication module may also be provided on the circuit board 41 for wirelessly connecting to an external device and transmitting collected gas-related data or information to the external device.

[0039] See also Figures 3 to 5 To protect the components within the ultrasonic gas detection device 100, the device 100 includes a housing 50 having an air inlet 51, an air outlet 52, and a storage space. As will be appreciated, to ensure the gas is airtight within the ultrasonic gas detection device 100 and prevent gas leakage, the housing 50 is used to seal the components within. When the air inlet 51 and the air outlet 52 are connected to the gas supply and gas consumption ends, respectively, the ultrasonic gas detection device 100 is leak-proof.

[0040] Specifically, the housing 50 includes an outer wall 53 and a partition wall 54 disposed within the outer wall 53. The outer wall 53 is used to enclose the accommodation space. The partition wall 54 divides the accommodation space into a first accommodation space 50a and a second accommodation space 50b. The second accommodation space 50b is airtight and independent from the first accommodation space 50a. Specifically, the outer wall 53 includes a top wall 531, a bottom wall 532, and a side wall 533 connected between the top wall 531 and the bottom wall 532. The air inlet 51 and the air outlet 52 are both disposed on the side wall 533. In this embodiment, the air inlet 51 and the air outlet 52 are disposed opposite each other, that is, the air inlet 51 and the air outlet 52 are respectively disposed on opposing side walls 533. In other embodiments, the air inlet 51 and the air outlet 52 may be relatively staggered on the side wall 533, or both the air inlet 51 and the air outlet 52 may be disposed on the top wall 531, or both the air inlet 51 and the air outlet 52 may be disposed on the bottom wall 532, or both the air inlet 51 and the air outlet 52 may be disposed on the side wall 533, or the air inlet 51 and the air outlet 52 may be disposed on two of the top wall 531, the bottom wall 532, and the side wall 533, respectively. This application does not impose any specific limitation. The housing 50 may be provided to protect internal components such as the gas channel 10, thereby extending the service life of the product.

[0041] In which, the gas channel 10 is located in the first accommodating space 50a, and one end of the gas channel 10 is used to receive the gas from the air inlet 51, and the other end of the gas channel 10 is connected to the air outlet 52; the gas enters the first accommodating space 50a through the air inlet 51, and then enters one end of the gas channel 10, and flows out from the other end of the gas channel 10 and then flows out through the air outlet 52.

[0042] The circuit board 41 is disposed in the second storage space 50b. The valve 20 and the ultrasonic detection module 30 are electrically connected to the circuit board 41 via an electrical connector (not shown in the figure), and the electrical connector passes through the outer wall 53 or the partition wall 54. In other embodiments, the valve 20 or the ultrasonic detection module 30 is electrically connected to the circuit board 41 via an electrical connector (not shown in the figure). Providing two independent and airtight storage spaces can separate electrical components such as the control module from the storage space for gas circulation, thereby ensuring the safety of gas circulation and monitoring and improving product safety.

[0043] See also Figure 6In this embodiment, the valve 20 is arranged adjacent to the air inlet 51 and can control whether the gas flowing through the air inlet 51 flows; that is, when the valve 20 is closed, the gas cannot enter the first accommodating space 50a after flowing through the air inlet 51, and thus cannot enter the gas channel 10; when the valve 20 is opened, the gas enters the first accommodating space 50a after flowing through the air inlet 51, and then enters the gas channel 10.

[0044] Of course, in other embodiments, the valve 20 may also be provided on the gas passage 10 , as long as it can control the cutting off or restoring of the gas flow.

[0045] To allow the user to visually observe the gas status, the ultrasonic gas detection device also includes a display 60 for displaying the operating status of the ultrasonic gas detection device and / or the amount of gas leakage. The display 60 can display preset information, thereby alerting the user. Of course, in other embodiments, a voice module, such as a speaker, can also be provided to play audio reminders; or a software app, such as a software application, can be configured on an electronic device to communicate with the control module to receive relevant warning information or gas information.

[0046] In this embodiment, the display 60 is disposed on a side of the housing 50. Specifically, the housing 50 further includes a cover plate 55. The display 60 is disposed on the cover plate 55. The cover plate 55 covers the side wall 533 and, together with the side wall 533, forms the second accommodation space 50b. The display 60 includes a display screen disposed on the cover plate 55. In other embodiments, the display 60 can be used independently, requiring only wireless communication with the circuit board 41. This allows the display 60 to be mounted in a readily visible location, thereby providing a useful reminder.

[0047] See also Figure 5 and Figure 7 In this embodiment, the ultrasonic detection module 30 includes a first ultrasonic sensor 31 and a second ultrasonic sensor 32 disposed in the gas passage 10. The first ultrasonic sensor 31 is configured to emit a first ultrasonic signal, and the second ultrasonic sensor 32 is configured to receive the first ultrasonic signal. The two ultrasonic sensors, respectively transmitting and receiving ultrasonic signals, enable detection of the signal's flight time in the gas passage 10. It will be appreciated that to ensure the safety of the ultrasonic detection module 30 during use, the ultrasonic detection module 30 is hermetically sealed. The first ultrasonic sensor 31, the second ultrasonic sensor 32, and other electronic components are sealed and insulated to isolate them from the gas in the first storage space 50a, thereby preventing any ignition of the gas.

[0048] In this embodiment, the first ultrasonic sensor 31 and the second ultrasonic sensor 32 are disposed on the same side of the gas passage 10 and spaced apart. The incident angles between the first ultrasonic sensor 31 and the second ultrasonic sensor 32 and the gas passage 10 are set appropriately to ensure that the emitted first ultrasonic signal can be received by the second ultrasonic sensor 32. The distance of the flight path of the first ultrasonic signal in the gas passage 10 can also be calculated based on the incident angles. Of course, in other embodiments, the first ultrasonic sensor 31 and the second ultrasonic sensor 32 can be disposed on opposite sides of the gas passage 10, as long as appropriate incident angles are set to ensure that the emitted first ultrasonic signal can be received by the second ultrasonic sensor 32.

[0049] Specifically, after the first ultrasonic sensor 31 emits a first ultrasonic signal, the first ultrasonic signal travels along a preset path within the gas passage 10 and is received by the second ultrasonic sensor 32. The control module on the circuit board 41 can record the time the first ultrasonic sensor 31 emits the first ultrasonic signal and the time the second ultrasonic sensor 32 receives the first ultrasonic signal, thereby calculating the flight time of the first ultrasonic signal along the preset path within the gas passage 10. Based on the flight time of the first ultrasonic signal, the speed of the first ultrasonic signal in the gas at the time the first ultrasonic sensor 31 emitted the first ultrasonic signal can be calculated. After calculating the speed of the first ultrasonic signal in the gas, the control module compares it with a preset speed of the first ultrasonic signal in the gas. If the calculated speed is within the error range, the speed of the first ultrasonic signal in the gas has not changed, and a gas leak can be determined. If the calculated speed is outside the error range, the speed of the first ultrasonic signal in the gas has changed, and a gas leak can be determined.

[0050] Continue reading Figure 4 and Figure 5In this embodiment, the ultrasonic gas detection device further includes an airflow straightener 70 disposed at the front end of the gas channel 10. Specifically, the airflow straightener 70 is disposed at the gas inlet of the gas channel 10. The airflow straightener 70 straightens the gas within the gas channel 10, thereby quickly reducing the gas flow rate therein and facilitating subsequent detection. To further reduce the gas flow rate within the gas channel 10, an airflow straightener 70 is also disposed at the outlet end of the valve 20, away from the air inlet 51. This reduces the gas flow rate upon entering the first accommodation space 50a. Specifically, the ultrasonic gas detection device further includes a first seal 81 disposed between the air inlet 51 and the valve 20, and a second seal 82 disposed between the gas channel 10 and the air outlet 52. These seals ensure the airtightness of the ultrasonic gas detection device, thereby improving the detection accuracy of the ultrasonic detection module 30.

[0051] In other embodiments, the ultrasonic gas detection device further includes a pressure sensor disposed in the gas passage 10. The pressure sensor can be located adjacent to the valve 20 to sense changes in the gas pressure of the ultrasonic gas leak detection device 100 or in the gas pipeline at the gas supply end connected to the gas inlet, thereby providing dual confirmation of gas leakage. The provision of the pressure sensor provides additional pressure detection, thereby enabling multi-directional detection of gas leaks and improving detection accuracy.

[0052] Working principle:

[0053] The ultrasonic gas detection device 100 provided in this application is installed on a gas pipeline, with one end connected to the gas supply end and the other end connected to the gas consumption end. The gas supply end is the gas input end, and the gas consumption end is the gas output end. It can be connected to gas appliances that use gas, such as gas stoves, gas water heaters, etc. The gas enters the gas consumption end after passing through the ultrasonic gas detection device 100.

[0054] When the gas-consuming end is unused and the gas pipeline is leak-free, the gas flow rate within the gas channel 10 defaults to 0. At this point, the gas within the gas channel 10 is static, resulting in absolute zero flow. In this absolute zero flow environment, the ultrasonic detection module 30 is activated. The first ultrasonic sensor 31 emits a first ultrasonic signal, which travels along a preset path within the gas channel 10 before being received by the second ultrasonic sensor 32. This allows the flight time of the first ultrasonic signal along the preset path within the gas channel 10 to be determined. Based on the distance between the first and second ultrasonic sensors 31, 32, and the angle of incidence, the length of the preset path—that is, the distance traveled by the first ultrasonic signal within the gas channel 10—can be calculated. This allows the flight speed of the first ultrasonic signal in this absolute zero flow environment to be calculated and stored as a reference value in the control module.

[0055] When the gas end is not in use, the control module controls the valve 20 to detect whether there is a gas leak in the gas pipeline. After the valve 20 is closed for a preset time, the control module controls the valve 20 to open and simultaneously turns on the ultrasonic detection module 30, that is, controls the first ultrasonic sensor 31 to emit a first ultrasonic signal, which is received by the second ultrasonic sensor 32. The flight time of the first ultrasonic signal and the flight speed of the first ultrasonic signal at this time are calculated and compared with the pre-stored flight speed. If the time is within the error range, it can be determined that there is no gas leak in the gas pipeline. If the time is beyond the error range, it can be determined that there is a gas leak in the gas pipeline. The preset time can be 10S, 20S, 30S or longer, and this application does not impose specific restrictions.

[0056] Among them, when the valve 20 is closed, if a leak occurs in the gas pipeline at the gas-using end, the amount of gas in the gas channel 10 and the gas-using end will decrease after a period of time; after opening the valve 20, the gas supply end will replenish gas to the gas channel 10 and the gas-using end, causing the flow rate of the gas passing through the gas channel 10 to change, thereby affecting the flight speed of the first ultrasonic signal when the ultrasonic detection module 30 starts to perform detection, thereby changing the flight time of the first ultrasonic signal. The flight speed of the first ultrasonic signal during detection is calculated based on the flight time and compared with the pre-stored data to determine whether a leak occurs.

[0057] Of course, it is also unnecessary to pre-store the reference value of the flight speed of the first ultrasonic signal in the control module. It is only necessary to close the valve 20 for a period of time when the gas end is not in use, open the valve 20 and turn on the ultrasonic detection module 30 for detection every time period, calculate the flight speed or time of the first ultrasonic signal and record and store it; repeat the above process continuously, and compare and analyze the value of the flight speed or time calculated this time with the value recorded last time. When an abnormal value is found, such as the value change exceeds the error range or the preset range, it is determined to be a gas leak.

[0058] In another embodiment, both the first ultrasonic sensor 31 and the second ultrasonic sensor 32 can transmit and receive ultrasonic signals. When the valve 20 is closed, the first ultrasonic sensor 31 emits a first ultrasonic signal and is received by the second ultrasonic sensor 32. The control module calculates the flight time of the first ultrasonic signal along the preset path; then the second ultrasonic sensor 32 emits a second ultrasonic signal and is received by the first ultrasonic sensor 31. The control module calculates the flight time of the second ultrasonic signal along the preset path and calculates the flight time difference between the two; the valve 20 is opened, the gas flows, and the above-mentioned working process of the ultrasonic detection module 30 is repeated to obtain the flight time difference of the two ultrasonic signals when the gas flows. The two differences are compared. If there is no difference, it can be determined that there is no gas leakage; if there is a difference, that is, the two are not equal or the subtraction is not 0, it can be determined that a gas leak has occurred. Because, if there is no gas leakage, the gas in the gas channel 10 is in a static state after the valve 20 is closed and opened, so there is no difference in the flight time difference; if there is a leakage, the gas leaks after the valve 20 is closed for a period of time, resulting in a decrease in the total amount of gas in the gas channel 10. After the valve 20 is opened, the gas from the gas supply end is replenished into the gas channel 10, thereby increasing the gas flow rate, and causing the flight time difference of the ultrasonic signal to change.

[0059] The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. The above-described embodiments only express several implementation methods of the present application, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present application, several variations and improvements can be made, which all fall within the scope of protection of the present application. Therefore, the scope of protection of the patent application of this application shall be based on the attached claims.

Claims

1. An ultrasonic gas detection device, characterized in that: include Gas channels; a valve disposed at a front end of the gas passage, the valve being configured to close to prevent gas from flowing into the gas passage and open to resume gas flow; and An ultrasonic detection module is provided in the gas passage, and is used for detecting when the valve is opened to determine whether a gas leak occurs.

2. The ultrasonic gas detection device according to claim 1, characterized in that: The ultrasonic gas detection device further includes a control module, which is electrically connected to the valve and the ultrasonic detection module and is used to control the opening and closing of the valve and the opening and closing of the ultrasonic detection module respectively.

3. The ultrasonic gas detection device according to claim 2, characterized in that: The ultrasonic gas detection device includes a shell having an air inlet, an air outlet and a accommodating space. The valve is arranged adjacent to the air inlet and can control whether the gas flowing through the air inlet flows. The gas channel is located in the accommodating space, and one end of the gas channel is used to receive the gas from the air inlet, and the other end of the gas channel is connected to the air outlet.

4. The ultrasonic gas detection device according to claim 3, characterized in that: The accommodating space includes a first accommodating space, the gas channel is located in the first accommodating space, and the gas from the air inlet enters one end of the gas channel through the first accommodating space.

5. The ultrasonic gas detection device according to claim 4, characterized in that: The accommodating space also includes a second accommodating space that is airtight and independent of the first accommodating space, and the second accommodating space is used to accommodate the control module; the outer shell includes an outer wall and a partition wall arranged in the outer wall, the outer wall is used to enclose the accommodating space, and the partition wall divides the accommodating space into the first accommodating space and the second accommodating space, and the valve and / or the ultrasonic detection module are also used to be electrically connected to the control module via an electrical connector passing through the outer wall or the partition wall.

6. The ultrasonic gas detection device according to claim 5, characterized in that: The outer wall includes a top wall, a bottom wall, and a side wall connected between the top wall and the bottom wall. The air inlet and the air outlet are both arranged on the side wall and are relatively arranged or relatively staggered, or the air inlet and the air outlet are both arranged on at least one of the top wall, the bottom wall or the side wall.

7. The ultrasonic gas detection device according to claim 3, characterized in that: The ultrasonic gas detection device further comprises an early warning module for issuing early warning information, and the early warning module is electrically connected or communicatively connected to the control module.

8. The ultrasonic gas detection device according to claim 7, characterized in that: The early warning module further includes a display for displaying the working status of the ultrasonic gas detection device and / or the amount of gas leakage.

9. The ultrasonic gas detection device according to claim 1, characterized in that: The ultrasonic detection module includes a first ultrasonic sensor and a second ultrasonic sensor provided in the gas channel, wherein the first ultrasonic sensor is used to emit a first ultrasonic signal, and the second ultrasonic sensor is used to receive the first ultrasonic signal.

10. The ultrasonic gas detection device according to claim 3, characterized in that: The ultrasonic gas detection device also includes a pressure sensor arranged in the gas channel; the ultrasonic gas detection device also includes an airflow straightening member arranged at the front end of the gas channel; the ultrasonic gas detection device also includes a first sealing member arranged between the air inlet and the valve; the ultrasonic gas detection device also includes a second sealing member arranged between the gas channel and the air outlet.

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