Leak detection sensing device, leak detection device and leak detection monitoring system

Abstract

The present application relates to a leak detection sensor device, a leak detection device, and a leak detection monitoring system. The sensor device comprises a first terminal, a second terminal, and at least one touch switch, wherein the first end of the touch switch is connected to the first terminal, and the second end is connected to the second terminal. The first terminal is also used to connect to the first end of the sniffer switch on the sniffer gun of a halogen leak detector, and the second terminal is also used to connect to the second end of the sniffer switch. The sensor device is mounted on the sniffer gun head of the halogen leak detector through a mounting hole. During detection, the sniffer gun head is inserted toward the object to be detected, pressing the touch switch. When any touch switch is pressed and connected by the object to be detected, a high-level signal is immediately output to the sniffer gun, triggering the sniffer gun to operate. The halogen leak detector begins to measure the leak rate and sends the leak rate value to a communication-connected monitoring host. The monitoring host then issues an alarm if the leak detection time of the halogen leak detector does not reach a preset leak detection time.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioner leak detection, and in particular to a leak detection sensor device, a leak detection device, and a leak detection monitoring system. Background Art

[0002] At present, air conditioners have become an indispensable cooling and heating appliance in people's lives. The sealed refrigerant in the air conditioner is an important part of its work. If the refrigerant leaks, it will affect the use of the air conditioner and pollute the environment. Therefore, detecting refrigerant leaks in finished air conditioners (i.e. leak detection) is a crucial step.

[0003] Air conditioning manufacturers store assembled air conditioners in warehouses until they are ready for shipment. Before shipment, these units undergo a leak test, known as a static leak test. Effective static leak testing can successfully intercept leaking units, reducing after-sales repair work and improving the user experience.

[0004] In the related art, the refrigerant in air conditioners is generally fluorine, which is a halogen. Therefore, a halogen leak detector is generally used to detect the degree of leakage. When detecting leaks, the inspector inserts the suction gun head of the halogen leak detector into the packaging box of the air conditioner and reads the leakage rate value after the specified leak detection time. The higher the leakage rate value, the greater the possibility of refrigerant leakage. However, due to the uncontrollable human factors, the inspector's leak detection time is uncontrollable. If the inspector pulls out the suction gun head in advance, that is, the leak detection time is insufficient, the leak rate value does not rise to the maximum value and the detection is stopped. The detected leak rate value is lower than the actual leak rate value, and it is easy to mistake the air conditioner with a leak as an air conditioner that has passed the inspection, resulting in the problem of missed detection. Summary of the Invention

[0005] In view of this, in order to overcome the problem of missed detection caused by uncontrollable leak detection time in the related art, the present application provides a leak detection sensing device, a leak detection device and a leak detection monitoring system.

[0006] This application adopts the following technical solutions:

[0007] A leak detection sensor device is used in a leak detection monitoring system. The leak detection monitoring system includes a monitoring host and a halogen leak detector that are communicatively connected to each other. The halogen leak detector includes a sniffer gun. The sniffer gun has a sniffer gun switch and a sniffer gun head facing the object to be detected. The leak detection sensor device includes:

[0008] The device body has a mounting hole for being mounted on the suction gun head;

[0009] A first terminal, a second terminal, and at least one tact switch are provided on the device body; a first end of the tact switch is connected to the first terminal, and a second end is connected to the second terminal; the first terminal is also used to connect to the first end of the sniffer switch, and the second terminal is also used to connect to the second end of the sniffer switch;

[0010] During leak detection, the touch switch is turned on when pressed by the object to be detected, and a high-level signal is output to the sniffing gun to trigger the halogen leak detector to operate;

[0011] The halogen leak detector sends the measured leak rate value to the monitoring host, so that the monitoring host can alarm when the leak detection time of the halogen leak detector does not reach the preset leak detection time.

[0012] Optionally, also include:

[0013] A fastening structure for fixing the device body to the suction gun head.

[0014] Optionally, the fastening structure includes:

[0015] A fastening hole provided on the device body and perpendicular to the extending direction of the mounting hole;

[0016] The screw is used to be screwed into the fastening hole so that the device body is fastened to the suction gun head.

[0017] Optionally, also include:

[0018] an indicator light provided on the device body;

[0019] The first end of the indicator light is connected to the first terminal, and the second end is connected to the second terminal;

[0020] When the at least one touch switch is turned on, the indicator light emits light.

[0021] Optionally, the device body has a first circuit board and a second circuit board that are stacked;

[0022] The front side of the first circuit board faces the object to be detected; the touch switch is arranged on the front side of the first circuit board;

[0023] The front side of the second circuit board faces away from the object to be detected; and the indicator light is arranged on the front side of the second circuit board.

[0024] A leak detection device is used in a leak detection monitoring system, wherein the leak detection monitoring system includes a monitoring host; the leak detection device includes: a halogen leak detector; the halogen leak detector is communicatively connected to the monitoring host; the halogen leak detector includes a sniffer gun; the sniffer gun has a sniffer gun switch and a sniffer gun head facing the object to be detected;

[0025] The leak detection device further comprises a leak detection sensing device as described in any one of the above items.

[0026] A leak detection monitoring system comprising: a monitoring host and a halogen leak detector in communication with each other; the halogen leak detector comprising a sniffer gun; the sniffer gun comprising a sniffer gun switch and a sniffer gun head directed toward an object to be detected; the leak detection monitoring system further comprising a leak detection sensor device as described in any one of the above items;

[0027] The monitoring host is used to monitor the halogen leak detector and alarm when the leak detection time does not reach the preset leak detection time.

[0028] Optionally, it further includes a barcode scanner connected to the monitoring host;

[0029] The barcode scanner is used to scan the object to be detected and send the scanned information to the monitoring host for recording.

[0030] Optionally, it further includes an intelligent terminal connected to the monitoring host for communication;

[0031] The monitoring host is used to export the monitored data to the smart terminal.

[0032] Optionally, the monitoring host is further used to monitor and alarm when the leak rate value sent by the halogen leak detector is greater than a preset leak rate threshold.

[0033] This application adopts the above technical solution, which has the following beneficial effects:

[0034] This solution provides a new leak detection sensing device, in which a first terminal, a second terminal and at least one touch switch are provided on the device body, the first end of the touch switch is connected to the first terminal, the second end is connected to the second terminal, the first terminal is also used to connect to the first end of the sniffer switch on the sniffer gun of the halogen leak detector, and the second terminal is also used to connect to the second end of the sniffer switch. In this way, the touch switch and the sniffer switch are connected in parallel, so that the touch switch can control the halogen leak detector to measure the leakage rate value. The device body is mounted on the sniffer gun head of the halogen leak detector through the mounting hole. During detection, the sniffer gun head is inserted toward the object to be detected, and the light touch switch is pressed. Touch switch. When any touch switch is pressed and connected by the object to be detected, a high-level signal will be immediately output to the suction gun to trigger the suction gun to work. The halogen leak detector starts to measure the leak rate value and sends the leak rate value to the monitoring host with communication connection. The monitoring host counts until the detection is completed, the suction gun head is pulled out and the pressure disappears, and the touch switch is disconnected. In this way, the actual leak detection time can be accurately monitored. If the preset leak detection time is not reached, an alarm signal will be issued, thereby realizing precise control of the leak detection time and ensuring that each object to be detected can reach sufficient leak detection time, avoiding the problem of missed detection, and thus improving the effectiveness of leak detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] 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 of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0036] Figure 1 This is a structural diagram of a leak detection monitoring system provided by an embodiment of the present application.

[0037] Figure 2 This is a structural diagram of a leak detection sensor device provided in another embodiment of the present application.

[0038] Figure 3 This is a structural diagram of a leak detection sensor device provided in another embodiment of the present application.

[0039] Figure 4 This is a structural diagram of a leak detection sensor device provided in another embodiment of the present application.

[0040] Figure 5 This is a structural diagram of a leak detection sensor device provided in another embodiment of the present application.

[0041] Figure 6 This is a structural diagram of a leak detection sensor device provided in another embodiment of the present application.

[0042] Figure 7 It is a structural diagram of a leak detection monitoring system provided by another embodiment of the present application. DETAILED DESCRIPTION

[0043] To make the purpose, technical solutions, and advantages of this application more clear, the technical solutions of this application will be described in detail below. Obviously, the embodiments described are only some of the embodiments of this application, rather than all of them. Based on the embodiments in this application, all other implementation methods obtained by ordinary technicians in this field without making any creative work are within the scope of protection of this application.

[0044] Example

[0045] See also Figures 1 to 3 , Figure 1 This is a structural diagram of a leak detection monitoring system provided by an embodiment of the present application. Figure 2 and Figure 3 This is a structural diagram of a leak detection sensor device provided by an embodiment of the present application.

[0046] The present application provides a leak detection sensor device, which is applied to a leak detection monitoring system, such as Figure 1 As shown, the leak detection monitoring system includes a monitoring host 1 and a halogen leak detector 2 that are connected to each other; the halogen leak detector 2 includes a sniffer 3; the sniffer 3 has a sniffer switch 4 and a sniffer head 5 facing the object to be detected; see Figure 2 and Figure 3 , the leak detection sensing device 6 includes:

[0047] The device body 61 has a mounting hole 62 for being mounted on the suction gun head;

[0048] A first terminal 63, a second terminal 64, and at least one tact switch 65 are provided on the device body 61; the first end of the tact switch 65 is connected to the first terminal 63, and the second end is connected to the second terminal 64; the first terminal 63 is also used to connect to the first end of the sniffer switch 4, and the second terminal 64 is also used to connect to the second end of the sniffer switch 4;

[0049] During leak detection, the touch switch 65 is turned on by the object being detected, outputting a high-level signal to the sniffing gun to trigger the halogen leak detector 2 to operate;

[0050] The halogen leak detector 2 sends the measured leak rate value to the monitoring host 1, so that the monitoring host 1 can alarm when the leak detection time of the halogen leak detector 2 does not reach the preset leak detection time.

[0051] When the pressing disappears, the touch switch is disconnected.

[0052] The object to be detected may be, but is not limited to, an air conditioner. During leak detection, the suction gun head needs to be inserted into the leak detection hole of the packaging box of the air conditioner.

[0053] The device body 61 may be, but is not limited to, a cylindrical structure. Accordingly, a mounting hole 62 is provided at the axial center of the cylindrical structure. Figure 3 A cylindrical structure is used as an illustration.

[0054] This solution provides a new leak detection sensing device, in which a first terminal, a second terminal and at least one touch switch are provided on the device body, the first end of the touch switch is connected to the first terminal, the second end is connected to the second terminal, the first terminal is also used to connect to the first end of the sniffer switch on the sniffer gun of the halogen leak detector, and the second terminal is also used to connect to the second end of the sniffer switch. In this way, the touch switch and the sniffer switch are connected in parallel, so that the touch switch can control the halogen leak detector to measure the leakage rate value. The device body is mounted on the sniffer gun head of the halogen leak detector through the mounting hole. During detection, the sniffer gun head is inserted toward the object to be detected, and the light touch switch is pressed. Touch switch. When any touch switch is pressed and connected by the object to be detected, a high-level signal will be immediately output to the suction gun to trigger the suction gun to work. The halogen leak detector starts to measure the leak rate value and sends the leak rate value to the monitoring host with communication connection. The monitoring host counts until the detection is completed, the suction gun head is pulled out and the pressure disappears, and the touch switch is disconnected. In this way, the actual leak detection time can be accurately monitored. If the preset leak detection time is not reached, an alarm signal will be issued, thereby realizing precise control of the leak detection time and ensuring that each object to be detected can reach sufficient leak detection time, avoiding the problem of missed detection, and thus improving the effectiveness of leak detection.

[0055] Considering that the suction gun head will be repeatedly plugged in and out during actual detection, the sensor device is prone to fall off. To avoid this problem, the sensor device of this embodiment can optionally further include: a fastening structure for fixing the device body to the suction gun head.

[0056] There are many specific structures of the above-mentioned fastening structure. For example, one fastening structure can be: Figure 3 The device body 61 includes a fastening hole 66 perpendicular to the mounting hole 62, and a screw 67 screwed into the fastening hole to secure the device body to the sniffer tip. During operation, the screw is screwed into the fastening hole and tightened, so that the screw head firmly presses against the sniffer tip, preventing it from falling off. Alternatively, a rubber ring can be placed between the sniffer tip and the mounting hole for securement.

[0057] In practice, there are many specific models of the touch switch, for example, the model may be K9-1267P.

[0058] The number of touch switches can be set according to the actual application environment. Figure 2 and Figure 3 Three touch switches are used as an example. If a large number of them are set, they can be dispersed on the device body, which increases the possibility of the touch switch being pressed. No matter from which angle the suction gun head is inserted into the object to be detected, it can be guaranteed that a touch switch is pressed, the sensing will be more sensitive, and the timing will be more accurate.

[0059] In order to facilitate understanding of the working status of the touch switch, the sensor device of this embodiment may optionally further include: an indicator light provided on the device body 61; Figure 4 The first end of indicator light 68 is connected to the first terminal 63, and the second end is connected to the second terminal 64. When at least one touch switch 65 is turned on, indicator light 68 illuminates. Specifically, only one indicator light can be provided, or two or more indicator lights can be provided. For example, two or more indicator lights can be connected in series, with one end of the series connected to the first terminal and the other end connected to the second terminal. This provides a more obvious prompt effect. For example, three indicator lights can be provided in series. The type of indicator light can be, but is not limited to, a light-emitting diode.

[0060] It is understandable that in order to carry electronic components, a circuit board is also provided on the device body. Optionally, the device body has a first circuit board and a second circuit board that are stacked; the front of the first circuit board faces the object to be detected; see Figure 3 , the touch switch 65 is arranged on the front of the first circuit board 69; the front of the second circuit board faces away from the object to be detected; see Figure 5 The indicator light 68 is located on the front of the second circuit board 610. The front of a circuit board refers to the side where the electronic components are located. In this embodiment, the touch switch and indicator light are located on two separate circuit boards. The touch switch faces the object being inspected, while the indicator light faces away from the object being inspected. Accordingly, the indicator light faces the inspector, making it easier for the inspector to see the status of the indicator light.

[0061] Optionally, the first circuit board and the second circuit board can be fixed by welding via a connection terminal provided on the first circuit board or the second circuit board, which is more secure.

[0062] Another embodiment of the present application provides a leak detection device for use in a leak detection monitoring system. The leak detection monitoring system includes a monitoring host; a leak detection device including a halogen leak detector capable of communicating with the monitoring host; a sniffer gun having a sniffer switch and a sniffer head directed toward the object being detected; and a leak detection sensor device as described in any of the above embodiments. This embodiment utilizes the above leak detection sensor device and thus exhibits similar beneficial effects, which will not be further detailed here.

[0063] Generally, see Figure 6 The sniffer tip of the sniffer gun 5 includes a first-stage filter 51 and a quick-connect connector 52 for quickly inserting the object under test. The first-stage filter filters the inhaled gas, and the quick-connect connector allows for quick insertion into the object under test, protecting the sniffer tip. Specifically, the sensor body can be mounted via a mounting hole 62 on the end where the first-stage filter 51 and quick-connect connector 52 meet.

[0064] Another embodiment of the present application provides a leak detection monitoring system, comprising: a monitoring host and a halogen leak detector in communicative communication with each other; the halogen leak detector including a sniffer gun; the sniffer gun having a sniffer switch and a sniffer head directed toward the object being detected; the leak detection monitoring system further comprising a leak detection sensor device as described in any of the above embodiments; and a monitoring host configured to generate an alarm when the leak detection time of the halogen leak detector does not reach a preset leak detection time. This embodiment utilizes the above leak detection sensor device and thus exhibits similar beneficial effects, which will not be further described here.

[0065] There are many types of monitoring hosts, such as a controller. Specifically, the monitoring host may be, but is not limited to, an IOT-3960 controller.

[0066] Among them, there are many models of halogen detectors, such as the HLD-5000 model.

[0067] The preset leak detection time may be set based on empirical statistics, for example, it may be set to 5 to 10 seconds, and optionally, it may be set to 6 seconds.

[0068] Correspondingly, when the timing result is greater than or equal to the preset leak detection time, a completion signal is issued. In this way, the inspector can be prompted that the preset leak detection time has been reached and the detection can be stopped, thereby improving detection efficiency. There are many ways to time the monitoring host. For example, the difference between the time when the first leak rate value received and the time when the last leak rate value is received can be calculated as the timing result. For example, the monitoring host is equipped with a timer. When the first leak rate value is received, a start signal is sent to the timer. When the leak rate value stops being received, a stop timing signal is sent to the timer to obtain the timing result.

[0069] The monitoring host can periodically obtain the leak rate value sent by the halogen leak detector. In this way, continuous monitoring can be ensured. The length of the cycle can be set according to actual needs, such as 0.3 to 1 second, and optionally 0.5 second.

[0070] The larger the leak rate value sent by the halogen leak detector, the greater the possibility of a leak. Based on this, the monitoring host is also used to monitor the leak rate value sent by the halogen leak detector and trigger an alarm when it exceeds the preset leak rate threshold. This can remind the inspector that a leak is occurring and that it needs to be intercepted. After a period of rest (for example, one hour), a second leak test can be performed, or the device can be disassembled to find the leak fault point.

[0071] Specifically, the monitoring host can obtain the maximum leak rate value sent by the halogen leak detector. If the maximum leak rate value sent by the halogen leak detector is less than or equal to a preset leak rate threshold, the leak detection result is considered qualified. If the maximum leak rate value is greater than the preset leak rate value, an alarm is issued. Alternatively, the monitoring host is configured to compare each leak rate value received from the halogen leak detector with the preset leak rate value and issue an alarm if a leak rate value greater than the preset leak rate threshold is detected.

[0072] The preset leakage rate threshold may be set according to actual application, for example, it may be set to 0.3 to 1 g / a, and optionally, to 0.5 g / a.

[0073] In order to achieve the traceability of the leak detection process and leak detection results, and avoid the situation where the leak detection information of the faulty machine with leakage cannot be traced after sale, it is best to record each detected object. Based on this, optional, see Figure 7 , also includes a barcode scanner 7 that is communicatively connected to the monitoring host; the barcode scanner 7 is used to scan the object being tested and send the scanned information to the monitoring host for recording. The barcode scanner can be, but is not limited to, a barcode scanner. The monitoring host can save the scanned information and display information such as the production date, production model, and order number of the associated product. After scanning the code, the leak detection device performs the corresponding leak detection operation and records information such as the leak rate and timing results for later traceability. If the leak detection time is insufficient, the code needs to be scanned again for leaks.

[0074] In addition, since a barcode scanner is installed, the number of scanned codes can be used to reflect the workload of the inspector, urging the inspector to improve work efficiency and improve the leak detection effect.

[0075] Among them, there are many models of barcode scanners, such as the Zebra MC67.

[0076] In the related art, the inspector simply fills in the daily inspection quantity and completes the inspection record, which is not only time-consuming, but also cannot accurately and detailedly record the leak detection process and content. In order to facilitate the real-time supervision of the management personnel, an optional Figure 7 , further comprising a smart terminal 8 in communication with the monitoring host; the monitoring host 1 is configured to export monitored data to the smart terminal 8. This allows the monitoring host to directly export monitored data to the smart terminal, which is accurate and efficient. The smart terminal can be a mobile phone, tablet computer, or the like.

[0077] The above-mentioned smart terminal, barcode scanner, halogen leak detector and monitoring host can be connected via wired communication and / or wireless communication. Using multiple communication methods to connect can ensure smooth communication.

[0078] The wireless communication method may include at least one of Bluetooth communication, 4th generation (Generation, G) network, Wireless-Fidelity (Wireless-Fidelity, WiFi) network, and wireless radio frequency identification method.

[0079] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0080] It should be noted that, in the description of this application, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" refers to at least two.

[0081] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0082] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A leak detection sensor device, characterized in that: A monitoring system for leak detection includes a monitoring host and a halogen leak detector that are communicatively connected to each other; the halogen leak detector includes a sniffer gun; the sniffer gun has a sniffer gun switch and a sniffer gun head directed toward the object to be detected; the leak detection sensor device includes: The device body has a mounting hole for being mounted on the suction gun head; A first terminal, a second terminal, and at least one tact switch are provided on the device body; a first end of the tact switch is connected to the first terminal, and a second end is connected to the second terminal; the first terminal is also used to connect to the first end of the sniffer switch, and the second terminal is also used to connect to the second end of the sniffer switch; During leak detection, the touch switch is turned on when pressed by the object to be detected, and a high-level signal is output to the sniffing gun to trigger the halogen leak detector to operate; The halogen leak detector sends the measured leak rate value to the monitoring host, so that the monitoring host can alarm when the leak detection time of the halogen leak detector does not reach the preset leak detection time.

2. The leak detection sensor device according to claim 1, characterized in that: Also includes: A fastening structure for fixing the device body to the suction gun head.

3. The leak detection sensor device according to claim 2, characterized in that: The fastening structure comprises: A fastening hole provided on the device body and perpendicular to the extending direction of the mounting hole; The screw is used to be screwed into the fastening hole so that the device body is fastened to the suction gun head.

4. The leak detection sensor device according to claim 1, characterized in that: Also includes: an indicator light provided on the device body; The first end of the indicator light is connected to the first terminal, and the second end is connected to the second terminal; When the at least one touch switch is turned on, the indicator light emits light.

5. The leak detection sensor device according to claim 4, characterized in that: The device body comprises a first circuit board and a second circuit board which are stacked; The front side of the first circuit board faces the object to be detected; the touch switch is arranged on the front side of the first circuit board; The front side of the second circuit board faces away from the object to be detected; and the indicator light is arranged on the front side of the second circuit board.

6. A leak detection device, characterized in that: A monitoring system for leak detection, comprising a monitoring host; a leak detection device comprising a halogen leak detector; the halogen leak detector being communicatively connected to the monitoring host; the halogen leak detector comprising a sniffer; the sniffer having a sniffer switch and a sniffer head directed toward an object to be detected; The leak detection device further comprises a leak detection sensor device as claimed in any one of claims 1 to 5.

7. A leak detection monitoring system, characterized in that: include: A monitoring host and a halogen leak detector in communication with each other; the halogen leak detector includes a sniffer gun; the sniffer gun has a sniffer gun switch and a sniffer gun head directed toward the object to be detected; the leak detection monitoring system further includes a leak detection sensor device according to any one of claims 1 to 5; The monitoring host is used to monitor the halogen leak detector and alarm when the leak detection time does not reach the preset leak detection time.

8. The leak detection monitoring system according to claim 7, characterized in that: Also included is a barcode scanner connected to the monitoring host; The barcode scanner is used to scan the object to be detected and send the scanned information to the monitoring host for recording.

9. The leak detection monitoring system according to claim 7, characterized in that: Also included is an intelligent terminal in communication with the monitoring host; The monitoring host is also used to export the monitored data to the smart terminal.

10. The leak detection monitoring system according to claim 7, characterized in that: The monitoring host is also used to monitor and alarm when the leak rate value sent by the halogen leak detector is greater than a preset leak rate threshold.

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