Sound generating component of pipeline leak detection device, pipeline leak detection device and leak detection method

Abstract

The present invention discloses a sound generating component of a pipeline leak detection device, a pipeline leak detection device and a leak detection method. The sound generating component includes a liquid pump, a first pressure tank, an air pump, a second pressure tank and a three-way valve. The liquid pump is connected to the first pressure tank. The first pressure tank is connected to the first inlet end of the three-way valve. The air pump is connected to the second pressure tank. The second pressure tank is connected to the second inlet end of the three-way valve. The outlet end of the three-way valve is used to connect to the pipeline to be tested. Since both the liquid medium and the gas medium are input into the pipeline to be tested, the sound signal generated after the water and gas are mixed is relatively unique and is not easily interfered by other sound sources in the surrounding environment. Moreover, the intensity value of the sound signal generated after the water and gas are mixed is relatively large. Therefore, when using the sound generating component of this device to locate the pipeline leakage point, the positioning accuracy will be higher.

Description

Technical Field

[0001] The present invention relates to the field of underground pipeline detection, and particularly to a sound generating component of a pipeline leak detection device, a pipeline leak detection device, and a leak detection method. Background Art

[0002] With the development of science and technology, urban underground pipelines (such as water pipes) are increasing day by day. When a large number of underground pipelines with complex layouts leak, it is necessary to locate the leakage points. At present, the location of underground pipelines is a difficult problem in the industry, and there is no general solution. In particular, if the leakage of water pipes is not located and repaired in time, a large amount of water resources will be wasted.

[0003] Most of the existing water pipe leak detection methods use acoustic wave detectors to detect on the ground and locate the leakage points according to the detection results. This method is relatively rough, with low positioning accuracy, and is easily interfered by other sound sources in the surrounding environment. Summary of the Invention

[0004] The main object of the present invention is to provide a sound generating component of a pipeline leak detection device, a pipeline leak detection device, and a leak detection method, aiming to solve the problems that the existing leakage point location method is relatively rough, with low positioning accuracy, and is easily interfered by other sound sources in the surrounding environment.

[0005] To achieve the above object, the present invention provides a sound generating component of a pipeline leak detection device, including a liquid pump, a first pressure tank, an air pump, a second pressure tank, and a three-way valve;

[0006] The liquid pump is connected to the first pressure tank; the first pressure tank is connected to the first inlet end of the three-way valve; the air pump is connected to the second pressure tank; the second pressure tank is connected to the second inlet end of the three-way valve; the outlet end of the three-way valve is used to connect to the pipeline to be detected.

[0007] Preferably, it further includes a first pressure sensor, a first start-stop controller, a second pressure sensor, and a second start-stop controller;

[0008] The first start-stop controller is electrically connected to the liquid pump; the first pressure sensor is connected to the inside of the first pressure tank; the first start-stop controller is electrically connected to the first sensor;

[0009] The second start-stop controller is electrically connected to the air pump; the second pressure sensor is connected to the inside of the second pressure tank; the second start-stop controller is electrically connected to the second sensor.

[0010] Preferably, it further includes a first solenoid valve, a second solenoid valve, a first time relay, and a second time relay; the first solenoid valve is connected between the first pressure tank and the three-way valve; the second solenoid valve is connected between the second pressure tank and the three-way valve;

[0011] The first time relay is electrically connected to the first solenoid valve; the second time relay is electrically connected to the second solenoid valve.

[0012] Preferably, it further includes a first check valve and a second check valve; the first check valve is connected between the first solenoid valve and the three-way valve; the second check valve is connected between the second solenoid valve and the three-way valve.

[0013] Preferably, it further includes an air filter; the air filter is connected to the intake end of the air pump.

[0014] The present invention also provides a pipeline leak detection device, which includes the above-mentioned sound generating component, and further includes a sound detection component, and the sound detection component includes a sound detector; the sound detector is used to detect the sound signal generated by the sound generating component in the pipeline to be detected.

[0015] The present invention also provides a pipeline leak detection method, which is applied to the sound generating component of the pipeline leak detection device as described in any one of the above; the pipeline leak detection method includes:

[0016] Controlling the liquid medium in the first pressure tank and the gas medium in the second pressure tank to be input into the pipeline to be detected, so as to generate a sound signal in the pipeline to be detected.

[0017] Preferably, the sound generating component further includes a first solenoid valve, a second solenoid valve, a first time relay, and a second time relay; the first solenoid valve is connected between the first pressure tank and the three-way valve; the second solenoid valve is connected between the second pressure tank and the three-way valve;

[0018] The first time relay is electrically connected to the first solenoid valve; the second time relay is electrically connected to the second solenoid valve;

[0019] Before controlling the liquid medium in the first pressure tank and the gas medium in the second pressure tank to be input into the pipeline to be detected, it further includes:

[0020] By adjusting the action time of the first time relay to set the output duration and output interval time of the liquid medium, and adjusting the action time of the second time relay to set the output duration and output interval time of the gas medium.

[0021] Preferably, controlling the input of the liquid medium in the first pressure tank and the gas medium in the second pressure tank into the pipeline to be tested, so as to generate a sound signal in the pipeline to be tested, includes:

[0022] Controlling the liquid medium in the first pressure tank and the gas medium in the second pressure tank to be input into the pipeline to be tested alternately or simultaneously, so as to generate a sound signal in the pipeline to be tested.

[0023] Preferably, after controlling the input of the liquid medium in the first pressure tank and the gas medium in the second pressure tank into the pipeline to be tested to generate a sound signal in the pipeline to be tested, it further includes:

[0024] Detecting the sound signal, wherein the sound signal is generated by the vibration of the liquid medium and the gas medium at the leakage point of the pipeline to be tested;

[0025] Determining the position of the leakage point of the pipeline to be tested according to the sound signal.

[0026] The present invention at least has the following technical effects:

[0027] Through the above technical solution, the liquid medium (water) in the first pressure tank and the gas medium (air) in the second pressure tank are simultaneously input into the pipeline to be tested. The liquid medium and the gas medium flow in the pipeline to be tested. When the liquid medium and the gas medium flow to the leakage point, they will leak at the leakage point and cause vibration to generate a sound signal.

[0028] After the pipeline leak detection device generates a sound signal, it can be detected by the sound detection component. The position of the leakage point can be judged according to the intensity and frequency of the sound signal (this is the prior art and will not be elaborated here).

[0029] Since both the first pressure tank and the second pressure tank are connected to the pipeline to be tested, that is, the liquid medium and the gas medium are both input into the pipeline to be tested. The sound signal generated after the liquid medium and the gas medium are mixed (i.e., water-gas mixture) is relatively unique (the sound signals generated by the vibration of a single water flow and the vibration of a single air flow are relatively common in the external surrounding environment), and it is less likely to be interfered by other sound sources in the surrounding environment, and has strong anti-interference ability; and the intensity value of the sound signal generated after the water-gas mixture is larger than the sound signal generated by a single medium in the pipeline to be tested. Therefore, when using this sound generation component for pipeline leakage point positioning, the positioning accuracy will be higher. Description of the Drawings

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0031] Figure 1 It is a schematic structural diagram of a sound generation component of a pipeline leak detection device of the present invention;

[0032] Figure 2 It is a schematic flowchart of the first embodiment of a pipeline leak detection method of the present invention;

[0033] Figure 3 It is a partial flowchart of the second embodiment of a pipeline leak detection method of the present invention;

[0034] Figure 4 It is a partial flowchart of the third embodiment of a pipeline leak detection method of the present invention;

[0035] Figure 5 It is a partial flowchart of the fourth embodiment of a pipeline leak detection method of the present invention.

[0036] The realization, functional characteristics and advantages of the object of the present invention will be further described in conjunction with the embodiments with reference to the drawings. Specific Embodiments

[0037] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] The present invention provides a sound generation component of a pipeline leak detection device, a pipeline leak detection device and a method.

[0039] Please refer to the attached Figure 1 attachment Figure 1 It is a schematic structural diagram of a sound generation component of a pipeline leak detection device of the present invention.

[0040] As shown in the attached Figure 1 A sound generation component of a pipeline leak detection device includes a liquid pump, a first pressure tank, an air pump, a second pressure tank and a three-way valve.

[0041] The liquid pump is connected to the first pressure tank; the first pressure tank is connected to the first inlet end of the three-way valve; the air pump is connected to the second pressure tank; the second pressure tank is connected to the second inlet end of the three-way valve; the outlet end of the three-way valve is used to connect to the pipeline to be tested.

[0042] Through the above technical solution, the liquid pump is connected to an external water source (such as a water bucket). The liquid pump operates to transport and store water into the first pressure tank. An air filter is also provided at the inlet end of the air pump to filter impurities in the air. The air pump pressurizes and stores air into the second pressure tank. The liquid medium (water) in the first pressure tank and the gas medium (air) in the second pressure tank are simultaneously input into the pipeline to be tested. The liquid medium and the gas medium flow in the pipeline to be tested. When the liquid medium and the gas medium flow to the leakage point, they will leak at the leakage point and cause vibration, thereby generating a sound signal.

[0043] After the pipeline leak detection device generates a sound signal, it can be detected by the sound detection component. The location of the leakage point can be determined according to the intensity and frequency of the sound signal (this is the prior art and will not be elaborated here).

[0044] Since both the first pressure tank and the second pressure tank are connected to the pipeline to be tested, that is, both the liquid medium and the gas medium are input into the pipeline to be tested. The sound signal generated after the liquid medium and the gas medium are mixed (i.e., water and gas are mixed) is relatively unique (the sound signals generated by single water flow vibration and single air flow vibration are relatively common in the external surrounding environment), and it is less likely to be interfered by other sound sources in the surrounding environment, with strong anti-interference ability. Moreover, the intensity value of the sound signal generated after water and gas are mixed is larger than the sound signal generated by a single medium in the pipeline to be tested. Therefore, when using this sound generation component for pipeline leakage point positioning, the positioning accuracy will be higher.

[0045] In addition, as shown in the appendix Figure 1 The sound generation component of this pipeline leak detection device further includes a first pressure sensor, a first start-stop controller, a second pressure sensor, and a second start-stop control.

[0046] The first start-stop controller is electrically connected to the liquid pump; the first pressure sensor is connected to the inside of the first pressure tank; the first start-stop controller is electrically connected to the first sensor.

[0047] Through the above technical solution, the pressure in the first pressure tank can be stabilized, so that the liquid medium can be output to the pipeline to be tested more stably. Specifically: when the first pressure sensor measures that the pressure in the first pressure tank is higher than the first pressure value, the first pressure sensor sends a stop signal to the first start-stop controller, and the first start-stop controller controls the liquid pump to stop working after receiving the stop signal; when the first pressure sensor measures that the pressure in the first pressure tank is lower than the second pressure value, the first pressure sensor sends a start signal to the first start-stop controller, and the first start-stop controller controls the liquid pump to start working after receiving the start signal.

[0048] The above first pressure value is greater than the second pressure value. The specific value should refer to the specific usage situation (the longer the pipeline to be measured, the larger the value). In this embodiment, the first pressure value is preferably 5 mpa, and the second pressure value is preferably 4 mpa.

[0049] The second start-stop controller is electrically connected to the air pump; the second pressure sensor is connected to the inside of the second pressure tank; the second start-stop controller is electrically connected to the second sensor.

[0050] Through the above technical solution, the pressure in the second pressure tank can be stabilized, so that the gas medium can be output to the pipeline to be measured more stably. Specifically: when the second pressure sensor measures that the pressure in the second pressure tank is higher than the third pressure value, the second pressure sensor sends a stop signal to the second start-stop controller, and the second start-stop controller controls the air pump to stop working after receiving the stop signal; when the second pressure sensor measures that the pressure in the second pressure tank is lower than the fourth pressure value, the second pressure sensor sends a start signal to the second start-stop controller, and the second start-stop controller controls the air pump to start working after receiving the start signal.

[0051] The above third pressure value is greater than the fourth pressure value. The specific value should refer to the specific usage situation (the longer the pipeline to be measured, the larger the value). In this embodiment, the third pressure value is preferably 5 mpa, and the fourth pressure value is preferably 4 mpa.

[0052] In addition, as shown in the appendix Figure 1 The sound generating component of the pipeline leak detection device further includes a first solenoid valve, a second solenoid valve, a first time relay and a second time relay; a first solenoid valve is connected between the first pressure tank and the three-way valve; a second solenoid valve is connected between the second pressure tank and the three-way valve.

[0053] A first one-way valve is connected between the first solenoid valve and the three-way valve, and the flow direction of the first one-way valve is from the first solenoid valve to the three-way valve; a second one-way valve is connected between the second solenoid valve and the three-way valve, and the flow direction of the second one-way valve is from the second solenoid valve to the three-way valve.

[0054] By setting the one-way valve, the high-pressure water or high-pressure air in the pipeline to be measured can be prevented from flowing back, making the whole device work more stably.

[0055] The first time relay is electrically connected to the first solenoid valve; the second time relay is electrically connected to the second solenoid valve.

[0056] Through the above technical solution, the liquid medium can be input into the pipeline to be measured in a pulsed manner, and the gas medium can be input into the pipeline to be measured in a pulsed manner. The sound signals generated when the pulsed liquid medium and the pulsed gas medium flow in the pipeline to be measured are more unique and easy to distinguish, greatly improving the ability to resist external noise interference, thereby improving the working efficiency of the leak detection device.

[0057] In addition, the pulse frequency of the liquid medium and the pulse frequency of the gas medium can be adjusted by the first time relay and the second time relay; specifically: by setting the action time of the first time relay, the on-off frequency of the first solenoid valve (i.e., the opening duration and the opening interval of the first solenoid valve) can be adjusted, so as to adjust the output duration and the output interval of the liquid medium; by setting the action time of the second time relay, the on-off frequency of the second solenoid valve (i.e., the opening duration and the opening interval of the second solenoid valve) can be adjusted, so as to adjust the output duration and the output interval of the gas medium.

[0058] Through the above technical means, the mixing ratio of the liquid medium and the gas medium can be controlled, so as to generate sound signals with different frequencies.

[0059] In actual operation, the operator can adjust multiple different pulse frequencies, and compare the detected sound signals in real time, find the pulse frequency corresponding to the most distinguishable sound signal, or find the pulse frequency corresponding to the sound signal with the most unique timbre, which can greatly increase the distinguishability of the sound signal and has stronger anti-external noise interference ability, so as to improve the positioning effect of the pipeline leak detection device.

[0060] In addition, the present invention also proposes a pipeline leak detection device, which includes the above-mentioned sound generating component, and the pipeline leak detection device further includes a sound detecting component, and the sound detecting component includes a sound detector; the sound detector is used to detect the sound signal generated by the sound generating component in the pipeline to be detected.

[0061] The sound detecting component further includes an earphone, and the earphone is electrically connected to the sound detector; after the pipeline leak detection device generates a sound signal, it can be detected by the sound detecting component, and the position of the leakage point can be judged according to the intensity and frequency of the sound signal.

[0062] Specifically: during the actual use process by the operator, the operator holds the sound detector (handheld sound detector) for mobile detection. After detecting a sound signal, the sound detector will transmit the sound signal to the earphone in real time. After the operator wears the earphone, it can be judged in real time whether there is a leakage point under the current detection location. Specifically, that is, the greater the intensity value of the sound signal or the more unique the timbre or frequency of the sound signal, the greater the probability that there is a leakage point under the current detection location; after multiple mobile detections, find the location with the maximum intensity value of the sound signal and mark it as the leakage point of the pipeline to be detected.

[0063] In addition, this pipeline leak detection device further includes a host; both the sound detector and the earphone are electrically connected to the host. The sound detector transmits the detected sound signal to the host in real time, and the host analyzes the intensity value of the sound signal in real time and transmits the analysis result to the earphone, and the operator wears the earphone to receive the analysis result in real time.

[0064] For example, the operator wears headphones and holds a sound detector to detect sound while moving. The sound detector transmits the detected sound signal to the host computer in real time. The host computer broadcasts the intensity value of the sound signal detected by the sound detector at the current detection location to the headphones in the form of numerical reporting. Compared with the way of the operator's own hearing judgment, this way of numerical reporting is more intuitive and accurate, does not depend on the operator's experience, and reduces the usage threshold of this pipeline leak detection device.

[0065] At the same time, this pipeline leak detection device also includes a display; the display is electrically connected to the host computer. By setting the display, after the sound detector transmits the detected sound signal to the host computer in real time, the host computer can also display the intensity value of the sound signal detected by the sound detector at the current detection location on the display in the form of numerical display (a handheld display, which is convenient to carry and can be observed at any time), and the result is more intuitive and not prone to errors.

[0066] The present invention also proposes a pipeline leak detection method, as shown in the appendix Figure 2 As shown, this method is applied to the sound generating component of the above pipeline leak detection device; in the first embodiment of this method, this method includes the following steps:

[0067] Step S110: Control the liquid medium in the first pressure tank and the gas medium in the second pressure tank to be input into the pipeline to be tested, so as to generate a sound signal in the pipeline to be tested.

[0068] Specifically, the liquid pump is connected to an external water source, and the liquid pump works to transport and store water into the first pressure tank, and the air pump pressurizes and stores air into the second pressure tank; control the liquid medium in the first pressure tank and the gas medium in the second pressure tank to be input into the pipeline to be tested.

[0069] The liquid medium and the gas medium flow in the pipeline to be tested. When the liquid medium and the gas medium flow to the leakage point, they will leak at the leakage point and cause vibration to generate a sound signal.

[0070] After generating the sound signal, the leakage point can be determined according to the sound signal. For the specific determination method, please refer to the above text and will not be elaborated here.

[0071] Since both the liquid medium and the gas medium are input into the pipeline to be tested, the sound signal generated after the water and gas are mixed is relatively unique (the sound signals generated by single water flow vibration and single air flow vibration are relatively common in the external surrounding environment), it is less likely to be interfered by other sound sources in the surrounding environment, and the intensity value of the sound signal generated after the water and gas are mixed is relatively large. Therefore, when using this method for pipeline leakage point positioning, the positioning accuracy will be higher.

[0072] As shown in the appendixFigure 3 As shown, in the second embodiment of a pipeline leak detection method proposed by the invention, based on the first embodiment of this method, in the second embodiment of this method, the sound generating component further includes a first solenoid valve, a second solenoid valve, a first time relay, and a second time relay; a first solenoid valve is connected between the first pressure tank and the three-way valve; a second solenoid valve is connected between the second pressure tank and the three-way valve.

[0073] The first time relay is electrically connected to the first solenoid valve; the second time relay is electrically connected to the second solenoid valve.

[0074] Based on the first embodiment of this method, before step S110, the second embodiment of this method further includes the following steps:

[0075] Step S210: Set the output duration and output interval of the liquid medium by adjusting the action time of the first time relay, and set the output duration and output interval of the gas medium by adjusting the action time of the second time relay.

[0076] Through the above technical solution, the liquid medium can be input into the pipeline to be detected in a pulsed manner, and the gas medium can be input into the pipeline to be detected in a pulsed manner. The sound signals generated when the pulsed liquid medium and the pulsed gas medium flow in the pipeline to be detected are more unique and easy to distinguish, greatly improving the ability to resist external noise interference, thereby improving the working efficiency of this leak detection device.

[0077] In addition, the pulse frequencies of the liquid medium and the gas medium can be adjusted through the first time relay and the second time relay; specifically: by setting the action time of the first time relay, the on-off frequency of the first solenoid valve (i.e., the opening duration of the first solenoid valve and the opening interval of the first solenoid valve) can be adjusted, thereby adjusting the output duration and output interval of the liquid medium; by setting the action time of the second time relay, the on-off frequency of the second solenoid valve (i.e., the opening duration of the second solenoid valve and the opening interval of the second solenoid valve) can be adjusted, thereby adjusting the output duration and output interval of the gas medium.

[0078] Through the above technical means, the mixing ratio of the liquid medium and the gas medium can be controlled, thereby generating sound signals with different frequencies.

[0079] In actual operation, the operator can adjust multiple different pulse frequencies, and compare the detected sound signals in real time to find the pulse frequency corresponding to the most distinguishable sound signal, or find the pulse frequency corresponding to the sound signal with the most unique timbre, both of which can greatly increase the distinguishability of the sound signal and have a stronger ability to resist external noise interference, thereby improving the positioning effect of the pipeline leak detection device.

[0080] As shown in the Figure 4 accompanying drawings, in the third embodiment of a pipeline leak detection method proposed by the invention, based on the second embodiment of this method, step S110 includes the following steps:

[0081] Step S310: Control the liquid medium in the first pressure tank and the gas medium in the second pressure tank to be input into the pipeline to be tested alternately or simultaneously, so as to generate a sound signal in the pipeline to be tested.

[0082] Specifically, as can be seen from the foregoing, the pulse frequency of the liquid medium and the pulse frequency of the gas medium can be adjusted by the first time relay and the second time relay; then there are two ways to input the liquid medium and the gas medium into the pipeline to be tested, one is to input simultaneously, and the other is to input alternately.

[0083] For example, by adjusting the action time of the first time relay, the opening time of the first solenoid valve is set to 3 seconds, and the closing time of the first solenoid valve is set to 1 second. By adjusting the action time of the second time relay, the opening time of the second solenoid valve is set to 1 second, and the closing time of the second solenoid valve is set to 3 seconds; and the first time relay and the second time relay are started simultaneously, then at this time the liquid medium and the gas medium are input into the pipeline to be tested simultaneously, and the output duration of the liquid medium is 3 seconds, the output interval time of the liquid medium is 1 second, the output duration of the gas medium is 1 second, and the output interval time of the gas medium is 3 seconds.

[0084] By adjusting the action time of the first time relay, the opening time of the first solenoid valve is set to 3 seconds, and the closing time of the first solenoid valve is set to 1 second. By adjusting the action time of the second time relay, the opening time of the second solenoid valve is set to 1 second, and the closing time of the second solenoid valve is set to 3 seconds; and the first time relay and the second time relay are started at different times, so that the closing time point of the first solenoid valve just corresponds to the opening time point of the second solenoid valve; then at this time the liquid medium and the gas medium are input into the pipeline to be tested alternately, and the output duration of the liquid medium is 3 seconds, the output interval time of the liquid medium is 1 second, the output duration of the gas medium is 1 second, and the output interval time of the gas medium is 3 seconds.

[0085] When the liquid medium and the gas medium are input into the pipeline to be tested simultaneously and when the liquid medium and the gas medium are input into the pipeline to be tested alternately, different frequency sound signals will be generated, which can be specifically selected by the operator according to the actual situation, and the positioning effect is better.

[0086] As shown in the Figure 5 accompanying drawings, in the fourth embodiment of a pipeline leak detection method proposed by the invention, based on any of the above embodiments of this method, after step S110, the following steps are further included:

[0087] Step S410: Detect a sound signal, where the sound signal is generated by the vibration of the liquid medium and the gas medium at the leakage point of the pipeline to be measured.

[0088] Specifically, as described above, a sound detector can be used for sound detection; during actual use, the operator holds a sound detector (handheld sound detector) to perform mobile detection.

[0089] Step S420: Determine the location of the leakage point of the pipeline to be measured according to the sound signal.

[0090] Specifically, after the sound detector detects a sound signal, it transmits the sound signal to the earphone in real time. After the operator wears the earphone, he can judge in real time whether there is a leakage point under the current detection location. Specifically, that is, the greater the intensity value of the sound signal or the more unique the timbre or frequency of the sound signal, the greater the probability that there is a leakage point under the current detection location; after multiple mobile detections, find the location with the maximum intensity value of the sound signal and mark it as the leakage point of the pipeline to be measured.

[0091] Through the description of the above embodiments, those skilled in the art can clearly understand that the above embodiment methods can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes several instructions for causing a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in various embodiments of the present invention.

[0092] The embodiments of the present invention have been described above with reference to the drawings, but the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the spirit and scope protected by the present invention and the claims. These all belong to the protection scope of the present invention.

Claims

1. The sound generating component of a pipeline leak detection device, characterized in that It includes a liquid pump, a first pressure tank, an air pump, a second pressure tank and a three-way valve; The liquid pump is connected to the first pressure tank; the first pressure tank is connected to the first inlet end of the three-way valve; the air pump is connected to the second pressure tank; the second pressure tank is connected to the second inlet end of the three-way valve; the outlet end of the three-way valve is used to connect to the pipeline to be tested; It further includes a first pressure sensor, a first start-stop controller, a second pressure sensor and a second start-stop controller; The first start-stop controller is electrically connected to the liquid pump; the first pressure sensor is connected to the inside of the first pressure tank; the first start-stop controller is electrically connected to the first pressure sensor; The second start-stop controller is electrically connected to the air pump; the second pressure sensor is connected to the inside of the second pressure tank; the second start-stop controller is electrically connected to the second pressure sensor; When the first pressure sensor measures that the pressure in the first pressure tank is higher than the first pressure value, the first pressure sensor sends a stop signal to the first start-stop controller, and the first start-stop controller controls the liquid pump to stop working after receiving the stop signal; when the first pressure sensor measures that the pressure in the first pressure tank is lower than the second pressure value, the first pressure sensor sends a start signal to the first start-stop controller, and the first start-stop controller controls the liquid pump to start working after receiving the start signal; It further includes a first solenoid valve, a second solenoid valve, a first time relay and a second time relay; the first solenoid valve is connected between the first pressure tank and the three-way valve; the second solenoid valve is connected between the second pressure tank and the three-way valve; The first time relay is electrically connected to the first solenoid valve; the second time relay is electrically connected to the second solenoid valve; It further includes a first check valve and a second check valve; the first check valve is connected between the first solenoid valve and the three-way valve; the second check valve is connected between the second solenoid valve and the three-way valve; it also includes an air filter; the air filter is connected to the intake end of the air pump; the pulse frequencies of the liquid medium and the gas medium are adjusted by the first time relay and the second time relay.

2. A pipeline leak detection device, comprising the sound generating component as described in claim 1, characterized in that, The pipeline leak detection device further includes a sound detection component, and the sound detection component includes a sound detector; the sound detector is used to detect the sound signal generated by the sound generating component in the pipeline to be tested.

3. A pipeline leak detection method, characterized in that, A sound generating component applied to the pipeline leak detection device according to any one of claims 1-2; The pipeline leak detection method includes: Controlling the liquid medium in the first pressure tank and the gas medium in the second pressure tank to be input into the pipeline to be tested, so as to generate a sound signal in the pipeline to be tested.

4. A pipeline leak detection method as described in claim 3, characterized in that, The sound generating component further includes a first solenoid valve, a second solenoid valve, a first time relay and a second time relay; the first solenoid valve is connected between the first pressure tank and the three-way valve; the second solenoid valve is connected between the second pressure tank and the three-way valve; The first time relay is electrically connected to the first solenoid valve; the second time relay is electrically connected to the second solenoid valve; Before controlling the input of the liquid medium in the first pressure tank and the gas medium in the second pressure tank into the pipeline to be tested, it further includes: Setting the output duration and output interval of the liquid medium by adjusting the action time of the first time relay, and setting the output duration and output interval of the gas medium by adjusting the action time of the second time relay.

5. A pipeline leak detection method as described in claim 4, characterized in that, Controlling the input of the liquid medium in the first pressure tank and the gas medium in the second pressure tank into the pipeline to be tested to generate a sound signal in the pipeline to be tested, including: Controlling the liquid medium in the first pressure tank and the gas medium in the second pressure tank to be input into the pipeline to be tested alternately or simultaneously, so as to generate a sound signal in the pipeline to be tested.

6. A pipeline leak detection method according to any one of claims 3 to 5, characterized in that, After controlling the input of the liquid medium in the first pressure tank and the gas medium in the second pressure tank into the pipeline to be tested to generate a sound signal in the pipeline to be tested, it further includes: Detecting the sound signal, wherein the sound signal is generated by the vibration of the liquid medium and the gas medium at the leakage point of the pipeline to be tested; Determining the position of the leakage point of the pipeline to be tested according to the sound signal.

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