Ultrasonic fuel gas detection device

Abstract

The embodiment of the utility model provides an ultrasonic gas detection device which is used for being installed on a gas pipeline and comprises a gas channel, a first valve, a second valve, an ultrasonic detection module and a control module. The first valve is arranged at the front end of the gas channel. The second valve is arranged at the rear end of the gas channel. The ultrasonic detection module is arranged in the fuel gas channel and can transmit and receive ultrasonic signals. The control module is electrically connected with the first valve, the second valve and the ultrasonic detection module; the control module is used for controlling the first valve and the second valve to be closed and starting the ultrasonic detection module after the first valve and the second valve are closed; the control module is further used for controlling the first valve and the second valve to be opened, and after the first valve and the second valve are opened, the ultrasonic detection module is started to judge whether gas leakage happens to the gas pipeline or not. The ultrasonic gas detection device in the design can effectively judge whether gas leakage occurs in the gas pipeline 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; the ultrasonic gas detection device is used to be installed on a gas pipeline, and includes a gas channel, a first valve, a second valve, an ultrasonic detection module and a control module, the first valve is arranged at the front end of the gas channel, the second valve is arranged at the rear end of the gas channel, the ultrasonic detection module is arranged in the gas channel, the ultrasonic detection module can transmit and receive ultrasonic signals, the control module is electrically connected to the first valve, the second valve and the ultrasonic detection module, the control module is used to control the first valve and the second valve to be closed, and to turn on the ultrasonic detection module after the first valve and the second valve are closed, and the control module is also used to control the first valve and the second valve to be opened, and to turn on the ultrasonic detection module after the first valve and the second valve are opened to determine whether a gas leak occurs in the gas pipeline.

[0006] Based on the ultrasonic gas detection device provided in the embodiments of the present application, by designing a first valve and a second valve, the control module controls the closing of the first and second valves to cut off the flow of gas into the gas channel, causing the gas retained in the gas channel to gradually transition from a dynamic state to a static state after a period of time. In other words, the flow rate of the gas retained in the gas channel gradually decreases to zero. After the control module controls the opening of the first and second valves, if there is no gas leak in the gas pipeline, the flow rate of the gas in the gas pipeline remains zero. At this time, the gas with a zero flow rate will not flow in the gas channel. Conversely, if there is a gas leak in the gas pipeline, the gas will continue to flow out of the gas pipeline, causing the flow rate of the gas in the gas pipeline to increase. At this time, the gas with a higher flow rate will flow in the gas channel. By designing an ultrasonic detection module, after the control module controls the first valve and the second valve to be closed, the control module turns on the ultrasonic detection module. At this time, the control module can obtain relevant data of the ultrasonic detection module when the gas flow rate is zero; after the control module controls the first valve and the second valve to be opened, the control module turns on the ultrasonic detection module. At this time, the control module can obtain another relevant data of the ultrasonic detection module under the current gas flow rate. The control module can determine whether a gas leak occurs in the gas pipeline by comparing the relevant data in the valve closing and valve opening states, and can calculate the gas leakage amount with high accuracy based on the obtained relevant data. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] 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.

[0008] Figure 1 This is a schematic structural diagram of an ultrasonic gas detection device in one embodiment of the present application installed on a gas pipeline;

[0009] Figure 2 This is a schematic structural diagram of an ultrasonic gas detection device in one embodiment of the present application;

[0010] Figure 3 This is a schematic diagram of a partial cross-sectional structure of an ultrasonic gas detection device in one embodiment of the present application;

[0011] Figure 4 This is a schematic diagram of a half-section structure of an ultrasonic gas detection device in one embodiment of the present application;

[0012] Figure 5 This is a schematic diagram of the exploded structure of an ultrasonic gas detection device in one embodiment of the present application;

[0013] Figure 6 This is a schematic diagram of the exploded structure of the gas channel and the ultrasonic detection module in one embodiment of the present application;

[0014] Figure 7 This is a schematic diagram of a half-section structure of an ultrasonic gas detection device in one embodiment of the present application from another perspective;

[0015] Figure 8 This is a schematic diagram of a structure in which the air inlet and the air outlet are both symmetrically arranged on the side wall in one embodiment of the present application;

[0016] Figure 9 This is a schematic diagram of a structure in which the air inlet and the air outlet are both arranged on the side wall and staggered in an embodiment of the present application;

[0017] Figure 10 This is a schematic diagram of a structure in which the air inlet and the air outlet are both arranged on the top wall in one embodiment of the present application;

[0018] Figure 11 This is a schematic diagram of a structure in which the air inlet and the air outlet are both arranged on the bottom wall in one embodiment of the present application;

[0019] Figure 12 This is a structural schematic diagram of an embodiment of the present application in which the air inlet is arranged on the top wall and the air outlet is arranged on the side wall.

[0020] Description of reference numerals:

[0021] 100. Ultrasonic gas detection device; 10. Gas channel; 10a. First mounting hole; 10b. Second mounting hole; 21. First valve; 22. Second valve; 30. Ultrasonic detection module; 31. First ultrasonic sensor; 32. Second ultrasonic sensor; 40. Control module; 41. Circuit board; 42. Electrical connector; 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; 60. Early warning module; 61. Display; 81. First sealing member; 82. Second sealing member; 90. Connecting pipe; 300. Gas pipeline. DETAILED DESCRIPTION

[0022] 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.

[0023] 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.

[0024] 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.

[0025] See also Figure 1 , Figure 1 A reference diagram illustrating the use of the ultrasonic gas detection device 100 provided in an embodiment of the present application is provided. The ultrasonic gas detection device 100 is intended to be installed on a gas pipeline 300, with one end of the ultrasonic gas detection device 100 connected to the gas supply end and the other end connected to the gas consumption end. The gas supply end is the input end for gas, while the gas consumption end is the output end for gas, and can be connected to gas appliances such as gas stoves and gas water heaters. Gas flows from the gas supply end, passes through the ultrasonic gas detection device 100, and then flows into the gas consumption end, allowing the ultrasonic gas detection device 100 to detect gas leaks in the gas pipeline 300.

[0026] See also Figure 2-Figure 5 The ultrasonic gas detection device 100 provided in this embodiment includes a gas channel 10 , a first valve 21 , a second valve 22 , an ultrasonic detection module 30 and a control module 40 .

[0027] The gas channel 10 serves as the conduit for the common gas within the ultrasonic gas detection device 100. The gas channel 10 is a hollow pipe structure, and its cross-section perpendicular to its extension direction can be, but is not limited to, rectangular. The gas channel 10 has a front end and a rear end; the "front end" is the end where the gas supply flows into the gas channel 10, and the "rear end" is the end where the gas supply flows out of the gas channel 10.

[0028] The first valve 21 serves as a switch for the ultrasonic gas detection device 100 and is disposed at the front end of the gas passage 10. The first valve 21 has two states: closed and open. When the first valve 21 is closed, it blocks the flow of gas, preventing it from flowing into the gas passage 10 from the front end. When the first valve 21 is open, it restores the flow of gas, allowing it to flow into the gas passage 10 from the front end.

[0029] The second valve 22 serves as another switch for the ultrasonic gas detection device 100 and is disposed at the rear end of the gas passage 10. The second valve 22 has two states: closed and open. When the second valve 22 is closed, it blocks the flow of gas, preventing it from flowing out of the rear end of the gas passage 10. When the second valve 22 is open, it restores the flow of gas, allowing it to flow out of the rear end of the gas passage 10.

[0030] The ultrasonic detection module 30 serves as a detection unit of the ultrasonic gas detection device 100 ; the ultrasonic detection module 30 is disposed in the gas passage 10 ; the ultrasonic detection module 30 can transmit and receive ultrasonic signals.

[0031] The control module 40 serves as the control center of the ultrasonic gas detection device 100. The control module 40 may include, but is not limited to, an MCU (Microcontroller Unit). The control module 40 is electrically connected to the first valve 21, the second valve 22, and the ultrasonic detection module 30. Specifically, the ultrasonic gas detection device 100 also includes a circuit board 41, on which the control module 40 is disposed. The control module 40 is electrically connected to the first valve 21, the second valve 22, and the ultrasonic detection module 30 via the circuit board 41.

[0032] The control module 40 is used to control the first valve 21 and the second valve 22 to close. After the first valve 21 and the second valve 22 are closed, the control module 40 turns on the ultrasonic detection module 30 .

[0033] The control module 40 is further configured to control the opening of the first valve 21 and the second valve 22 . After the first valve 21 and the second valve 22 are opened, the control module 40 activates the ultrasonic detection module 30 to determine whether a gas leak occurs in the gas pipeline 300 .

[0034] Specifically, see Figure 6The ultrasonic detection module 30 includes a first ultrasonic sensor 31 and a second ultrasonic sensor 32. The first ultrasonic sensor 31 is disposed in the gas passage 10 and can transmit and receive ultrasonic signals. The second ultrasonic sensor 32 is also disposed in the gas passage 10 and can transmit and receive ultrasonic signals. The first ultrasonic sensor 31 and the second ultrasonic sensor 32 can be disposed in a reflective manner on the same wall of the gas passage 10, or they can be disposed in a facing manner on opposite walls of the gas passage 10. Specifically, the wall of the gas passage 10 is provided with a first mounting hole 10a and a second mounting hole 10b at predetermined angles. The first ultrasonic sensor 31 is mounted and fixed in the first mounting hole 10a via a mounting cap with a locking snap function. The second ultrasonic sensor 32 is mounted and fixed in the second mounting hole 10b via a mounting cap with a locking snap function. For example, taking the reflection type as an example, the ultrasonic signal emitted by the transmitter of the first ultrasonic sensor 31 can be received by the receiver of the second ultrasonic sensor 32 after being reflected by the pipe wall of the gas channel 10; the ultrasonic signal emitted by the transmitter of the second ultrasonic sensor 32 can be received by the receiver of the first ultrasonic sensor 31 after being reflected by the pipe wall of the gas channel 10.

[0035] When the gas end is not in use, the detection principle of the ultrasonic gas detection device 100 is introduced as follows:

[0036] After the control module 40 controls the first valve 21 and the second valve 22 to close, the gas retained in the gas channel 10 gradually changes from dynamic to static after a period of time, and the flow rate of the gas retained in the gas channel 10 also gradually decreases to zero, thereby forming an absolute zero flow in the gas channel 10.

[0037] In an absolute zero flow scenario, the control module 40 activates the ultrasonic detection module 30. The transmitter of the first ultrasonic sensor 31 transmits a first ultrasonic signal (one of the aforementioned ultrasonic signals), and the receiver of the second ultrasonic sensor 32 receives the first ultrasonic signal. The first ultrasonic signal emitted by the transmitter of the first ultrasonic sensor 31 travels along a predetermined flight path within the gas passage 10 and is then received by the receiver of the second ultrasonic sensor 32. The control module 40 calculates the flight time t1 of the first ultrasonic signal along the predetermined flight path within the gas passage 10 based on the time the transmitter of the first ultrasonic sensor 31 transmits the first ultrasonic signal and the time the receiver of the second ultrasonic sensor 32 receives the first ultrasonic signal.

[0038] In an absolute zero flow scenario, the control module 40 activates the ultrasonic detection module 30. The transmitter of the second ultrasonic sensor 32 transmits a second ultrasonic signal (another of the aforementioned ultrasonic signals, with the same magnitude and opposite direction as the first ultrasonic signal), and the receiver of the first ultrasonic sensor 31 receives the second ultrasonic signal. The second ultrasonic signal emitted by the transmitter of the second ultrasonic sensor 32 travels along the same predetermined flight path within the gas passage 10 and is then received by the receiver of the first ultrasonic sensor 31. The control module 40 calculates the flight time t2 of the second ultrasonic signal along the predetermined flight path within the gas passage 10 based on the time the transmitter of the second ultrasonic sensor 32 transmits the second ultrasonic signal and the time the receiver of the first ultrasonic sensor 31 receives the second ultrasonic signal.

[0039] It is understandable that in the scenario of absolute zero flow (at this time, the flow rate of the gas in the gas channel 10 is zero), if the influence of factors such as time drift and temperature drift is not considered, the calibration time difference △t=t1-t2=0 in theory (that is, there is no circuit extension); however, in the scenario of absolute zero flow, since factors such as time drift and temperature drift are real and cannot be ignored, the calibration time difference △t=t1-t2≠0 in actual circumstances (that is, there are errors such as time drift caused by circuit delay or temperature drift caused by temperature change).

[0040] After the control module 40 controls the opening of the first and second valves 21 and 22, it activates the ultrasonic detection module 30. At this point, the transmitter of the first ultrasonic sensor 31 is configured to transmit a first ultrasonic signal, and the receiver of the second ultrasonic sensor 32 is configured to receive the first ultrasonic signal. The first ultrasonic signal transmitted by the transmitter of the first ultrasonic sensor 31 travels along the predetermined flight path within the gas passage 10 and is then received by the receiver of the second ultrasonic sensor 32. The control module 40 can calculate the flight time t1' of the first ultrasonic signal along the predetermined flight path within the gas passage 10 based on the time the transmitter of the first ultrasonic sensor 31 transmits the first ultrasonic signal and the time the receiver of the second ultrasonic sensor 32 receives the first ultrasonic signal.

[0041] After the control module 40 controls the opening of the first and second valves 21 and 22, it activates the ultrasonic detection module 30. At this point, the transmitter of the second ultrasonic sensor 32 is configured to transmit a second ultrasonic signal, and the receiver of the first ultrasonic sensor 31 is configured to receive the second ultrasonic signal. The second ultrasonic signal transmitted by the transmitter of the second ultrasonic sensor 32 travels along the predetermined flight path within the gas passage 10 and is then received by the receiver of the first ultrasonic sensor 31. The control module 40 can calculate the flight time t2' of the second ultrasonic signal along the predetermined flight path within the gas passage 10 based on the time the transmitter of the second ultrasonic sensor 32 transmits the second ultrasonic signal and the time the receiver of the first ultrasonic sensor 31 receives the second ultrasonic signal.

[0042] After the control module 40 controls the first valve 21 and the second valve 22 to open, the actual time difference of the ultrasonic signal flying along the above-mentioned preset flight path in the gas channel 10 is Δt′=t1′−t2′.

[0043] It is understandable that after the control module 40 controls the first valve 21 and the second valve 22 to open, if there is no gas leakage in the gas pipeline 300, the flow rate of the gas in the gas pipeline 300 remains zero. At this time, the gas with a zero flow rate will not flow in the gas channel 10. Therefore, the gas with a zero flow rate will not affect the flight speed of the ultrasonic signal in the gas channel 10. When the preset flight path remains unchanged, the flight time of the ultrasonic signal in the gas channel 10 will not change, that is, Δt'-Δt=0.

[0044] It is understandable that after the control module 40 controls the first valve 21 and the second valve 22 to open, if a gas leak occurs in the gas pipeline 300, the gas will continue to flow out of the gas pipeline 300, causing the flow rate of the gas in the gas pipeline 300 to be relatively high. At this time, the gas with a relatively high flow rate will flow in the gas channel 10. Therefore, the gas with a relatively high flow rate will affect the flight speed of the ultrasonic signal in the gas channel 10. When the preset flight path remains unchanged, the flight time of the ultrasonic signal in the gas channel 10 will change, that is, △t'-△t≠0.

[0045] In this way, it is possible to determine whether the gas pipeline 300 has a leak by comparing the calibration time difference Δt obtained when the ultrasonic signal flies along a preset flight path in the gas channel 10 after the control module 40 controls the first valve 21 and the second valve 22 to be closed, and the actual time difference Δt' obtained when the ultrasonic signal flies along the same preset flight path in the gas channel 10 after the control module 40 controls the first valve 21 and the second valve 22 to be opened. If Δt'-Δt=0, it indicates that the gas pipeline 300 has not leaked; and if Δt'-Δt≠0, it indicates that the gas pipeline 300 has a leak.

[0046] It is understandable that the reason why Δt'-Δt≠0 is that the gas with a high flow rate caused by the leakage of the gas pipeline 300 affects the flight speed of the ultrasonic signal when flowing in the gas channel 10. Therefore, the flow rate of the gas leakage (which is also the flow rate of the gas flowing in the gas channel 10) V can be calculated at this time:

[0047]

[0048] Where L represents the transmission distance of the ultrasonic signal; c represents the speed of the ultrasonic wave in the gas medium, and c is a known value.

[0049] Based on the above formula 1, the gas leakage Q can be further obtained:

[0050] Q=VST------Formula 2

[0051] Wherein, S represents the cross-sectional area of ​​the gas pipeline 300; T represents the leakage time (eg, 3600 seconds).

[0052] Substituting the above formula 1 into formula 2 can calculate the gas leakage amount, and by calibrating the actual time difference with the calibration time difference, a relatively accurate time difference can be obtained, thereby improving the detection accuracy of the leakage amount and reducing error interference.

[0053] Compared to related art, in the ultrasonic gas detection device 100 of the present embodiment, the control module 40 shuts off the flow of gas into the gas channel 10 by controlling the closing of the first valve 21 and the second valve 22. After a period of time, the gas retained in the gas channel 10 gradually transitions from a dynamic state to a static state, and the flow rate of the gas retained in the gas channel 10 gradually decreases to zero, thereby achieving absolute zero flow in the gas channel 10. At this point, the control module 40 activates the ultrasonic detection module 30 and obtains the calibrated time difference of the ultrasonic signal at absolute zero flow. Subsequently, the control module 40 resumes the flow of gas into the gas channel 10 by controlling the opening of the first valve 21 and the second valve 22. At this point, the control module 40 activates the ultrasonic detection module 30 and obtains the actual time difference of the ultrasonic signal. The control module 40 determines whether a gas leak occurs in the gas pipeline 300 by comparing a calibrated time difference obtained when the ultrasonic signal flies along a preset flight path in the gas channel 10 after the control module 40 controls the first valve 21 and the second valve 22 to be closed, and an actual time difference obtained when the ultrasonic signal flies along the same preset flight path in the gas channel 10 after the control module 40 controls the first valve 21 and the second valve 22 to be opened.

[0054] It is worth mentioning that since the detection principle of the ultrasonic gas detection device 100 in the embodiment of the present application takes into account the fact that in the scenario of absolute zero flow, influencing factors such as time drift and temperature drift actually exist and cannot be ignored, when calculating the gas leakage amount, the errors caused by influencing factors such as circuit delay are removed to obtain a true and accurate gas leakage amount, which can effectively improve the accuracy of the ultrasonic gas detection device 100 in measuring the gas leakage amount.

[0055] Further, see Figure 2 and Figure 5 The ultrasonic gas detection device 100 also includes an early warning module 60. The control module 40 controls the early warning module 60 to issue an early warning prompt when it determines that the gas pipeline 300 is leaking. The early warning prompt may be, but is not limited to, a voice prompt, a light prompt, or a text prompt. It is understood that the specific form of the early warning module 60 may vary depending on the type of early warning prompt. For example, when the early warning prompt is a voice prompt, the early warning module 60 may include, but is not limited to, a buzzer. When the gas pipeline 300 is leaking, the control module 40 controls the buzzer to sound. For another example, when the early warning prompt is a light prompt, the early warning module 60 may include, but is not limited to, an indicator light. When the gas pipeline 300 is leaking, the control module 40 controls the indicator light to flash. For another example, when the early warning prompt is a text prompt, the early warning module 60 may include, but is not limited to, a display screen. The control module 40 controls the display screen to display a warning message such as "Attention, gas pipeline 300 is leaking!" By designing the early warning module 60, inspection personnel can promptly repair the leaking gas pipeline 300 based on the early warning prompts issued by the early warning module 60. It should be noted that the early warning module 60 can be set on one side of the shell 50 (introduced below). In this case, the early warning module 60 can be but not limited to being electrically connected to the control module 40 through conductive elements such as wires; the early warning module 60 can also be used alone. In this case, the early warning module 60 can be but not limited to being connected to the control module 40 through Bluetooth communication. In this way, the early warning module 60 can be installed in a place where it is easy to observe, so that it can play a good early warning role.

[0056] Specifically, the early warning module 60 includes a display 61, which is used to display the gas leakage amount and / or working status of the ultrasonic gas detection device 100. The gas leakage amount is one form of early warning prompt. When the value of the gas leakage amount displayed on the display 61 is zero, the inspector can judge that the gas pipeline 300 is not leaking based on this value. When the value of the gas leakage amount displayed on the display 61 is not zero, the inspector can judge that the gas pipeline 300 is leaking based on this value. The inspector can also determine whether to inspect the gas pipeline 300 based on whether the value is within the safe leakage range. The working status is also a form of early warning prompt. The inspector can judge whether the gas pipeline 300 is leaking based on the different working states displayed on the display 61 (including the normal working state when the gas pipeline 300 is not leaking and the abnormal working state when the gas pipeline 300 is leaking).

[0057] Further, see Figure 3 、 Figure 5 and Figure 7 The ultrasonic gas detection device 100 further includes a housing 50 having an air inlet 51, an air outlet 52, and a storage space. A first valve 21 is connected to the air inlet 51, and a second valve 22 is connected to the air outlet 52. A gas channel 10 is located within the storage space, with one end of the gas channel 10 being used to receive gas from the air inlet 51, and the other end of the gas channel 10 being connected to the second valve 22. When the first valve 21 is closed, gas from the gas pipeline 300 at the gas supply end cannot flow into the storage space from the air inlet 51. When the first valve 21 is opened, gas from the gas pipeline 300 at the gas supply end can flow into the storage space from the air inlet 51. When the second valve 22 is closed, gas in the gas channel 10 cannot flow into the gas pipeline 300 at the gas consumption end from the air outlet 52. When the second valve 22 is opened, gas in the gas channel 10 can flow into the gas pipeline 300 at the gas consumption end from the air outlet 52. By designing the outer shell 50 , the outer shell 50 can protect internal components such as the gas channel 10 , thereby extending the service life of the product.

[0058] Specifically, the housing 50 includes an outer wall 53 and a partition wall 54 disposed within the outer wall 53. The outer wall 53 encloses the aforementioned storage space, and the partition wall 54 separates the storage space into an airtight, independent first storage space 50a and a second storage space 50b. The air inlet 51 and the air outlet 52 communicate with the first storage space 50a. The gas channel 10, the first valve 21, the second valve 22, and the ultrasonic detection module 30 are disposed within the first storage space 50a, while the control module 40 is disposed within the second storage space 50b. In this design, the partition wall 54 separates the outer wall 53 into an airtight, independent first storage space 50a and a second storage space 50b. The gas channel 10, the first valve 21, the second valve 22, and the ultrasonic detection module 30 are disposed within the first storage space 50a, while the control module 40 is disposed within the second storage space 50b. This separates electrical components, such as the control module 40, from the space where gas flows, ensuring the safety of gas flow and detection within the ultrasonic gas detection device 100.

[0059] At least one of the first valve 21, the second valve 22, and the ultrasonic detection module 30 is electrically connected to the control module 40 via an electrical connector 42 that passes through the partition wall 54. The electrical connector 42 may be, but is not limited to, a conductive post. This structure is simple and easy to implement.

[0060] Furthermore, 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 specific arrangement of the air inlet 51 and the air outlet 52 on the top wall 531, the bottom wall 532 and the side wall 533 can include but is not limited to the following embodiments.

[0061] See also Figure 8 In the first embodiment, the air inlet 51 and the air outlet 52 are both arranged on the side wall 533 and are arranged opposite to each other.

[0062] See also Figure 9 In the second embodiment, the air inlet 51 and the air outlet 52 are both arranged on the side wall 533 and are relatively staggered.

[0063] See also Figure 10 In the third embodiment, the air inlet 51 and the air outlet 52 are both provided on the top wall 531 .

[0064] See also Figure 11 In the fourth embodiment, the air inlet 51 and the air outlet 52 are both arranged on the bottom wall 532 .

[0065] See also Figure 12In the fifth embodiment, the air inlet 51 is disposed on one of the top wall 531 , the bottom wall 532 and the side wall 533 , and the air outlet 52 is disposed on the other one of the top wall 531 , the bottom wall 532 and the side wall 533 .

[0066] Further, see Figure 4 and Figure 5 The ultrasonic gas detection device 100 further includes a first sealing member 81 disposed between the first valve 21 and the air inlet 51. The first sealing member 81 may be, but is not limited to, a sealing rubber ring, a sealing silicone ring, or a sealing glue layer. The design of the first sealing member 81 ensures a tight seal between the first valve 21 and the air inlet 51, allowing all gas flowing through the air inlet 51 to flow out through the first valve 21 into the first accommodation space 50a.

[0067] Further, see Figure 4 and Figure 5 The ultrasonic gas detection device 100 further includes a second sealing member 82 disposed between the second valve 22 and the gas outlet 52. The second sealing member 82 may be, but is not limited to, a sealing rubber ring, a sealing silicone ring, or a sealing glue layer. The design of the second sealing member 82 ensures a tight seal between the second valve 22 and the gas outlet 52, allowing the gas entering the gas passage 10 to flow out of the gas outlet 52 after passing through the second valve 22.

[0068] Further, see Figure 4 and Figure 5 The ultrasonic gas detection device 100 further includes a connecting pipe 90 , and the rear end of the gas channel 10 is connected to the second valve 22 through the connecting pipe 90 .

[0069] Furthermore, the ultrasonic gas detection device 100 also includes a pressure sensor (not shown). This pressure sensor can be positioned adjacent to the second valve 22 and is used to sense changes in the gas pressure within the ultrasonic gas detection device 100 or in the gas pipe 300 connected to the gas outlet 52, thereby providing dual confirmation of gas leaks. By designing a pressure sensor and adding pressure detection, multi-directional gas leak detection can be achieved, improving detection accuracy.

[0070] Furthermore, the ultrasonic gas detection device 100 also includes an airflow straightener (not shown) disposed at the front end of the gas channel 10. By designing the airflow straightener, the airflow straightener straightens the gas in the gas channel 10, thereby rapidly reducing the gas flow rate therein and facilitating subsequent detection.

[0071] 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: Used to be installed on a gas pipeline, the ultrasonic gas detection device includes: Gas channels; a first valve disposed at the front end of the gas channel; a second valve disposed at the rear end of the gas passage; An ultrasonic detection module is provided in the gas channel, and the ultrasonic detection module can transmit and receive ultrasonic signals; a control module electrically connected to the first valve, the second valve, and the ultrasonic detection module; the control module is used to control the first valve and the second valve to close, and to open the ultrasonic detection module after the first valve and the second valve are closed; the control module is also used to control the first valve and the second valve to open, and to open the ultrasonic detection module after the first valve and the second valve are opened to determine whether a gas leak occurs in the gas pipeline.

2. The ultrasonic gas detection device according to claim 1, characterized in that: The ultrasonic gas detection device further comprises an early warning module, and the control module controls the early warning module to issue an early warning prompt when it is determined that a gas leak occurs in the gas pipeline.

3. The ultrasonic gas detection device according to claim 2, characterized in that: The early warning module includes a display, and the display is used to display the gas leakage amount and / or working status of the ultrasonic gas detection device.

4. The ultrasonic gas detection device according to claim 1, characterized in that: The ultrasonic detection module includes: a first ultrasonic sensor, disposed in the gas channel, for transmitting and receiving ultrasonic signals; The second ultrasonic sensor is arranged in the gas channel and is used for transmitting and receiving ultrasonic signals.

5. The ultrasonic gas detection device according to claim 1, characterized in that: The ultrasonic gas detection device also includes a shell, which has an air inlet, an air outlet and a accommodating space, the first valve is connected to the air inlet, and the second valve is connected to the air outlet; the gas channel is located in the accommodating space, and one end of the gas channel is used to receive gas from the air inlet, and the other end of the gas channel is connected to the second valve.

6. The ultrasonic gas detection device according to claim 5, characterized in that: The 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 an airtight and independent first accommodating space and a second accommodating space; the air inlet and the air outlet are connected to the first accommodating space, the gas channel, the first valve, the second valve and the ultrasonic detection module are arranged in the first accommodating space; the control module is arranged in the second accommodating space.

7. The ultrasonic gas detection device according to claim 6, characterized in that: At least one of the first valve, the second valve, and the ultrasonic detection module is electrically connected to the control module via an electrical connector penetrating the partition wall.

8. The ultrasonic gas detection device according to claim 6, 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 walls and are arranged opposite to each other or relatively staggered, or the air inlet and the air outlet are both arranged on the top wall, or the air inlet and the air outlet are both arranged on the bottom wall, or the air inlet is arranged on one of the top wall, the bottom wall and the side walls, and the air outlet is arranged on the other one of the top wall, the bottom wall and the side walls.

9. The ultrasonic gas detection device according to claim 5, characterized in that: The ultrasonic gas detection device further includes a first sealing member provided between the first valve and the gas inlet; the ultrasonic gas detection device further includes a second sealing member provided between the second valve and the gas outlet.

10. The ultrasonic gas detection device according to claim 5, characterized in that: The ultrasonic gas detection device further includes a pressure sensor; the ultrasonic gas detection device further includes an airflow rectifying member arranged at the front end of the gas channel.

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