Water purifier water pipeline leakage gas detection system and detection method

Abstract

The invention discloses a water leakage detection device for a water purifier, and particularly relates to a detection system and a detection method for gas leakage of a water pipeline of the water purifier, and the gas detection system comprises a gas source; a numerical control pressure reducing valve; an electromagnetic control valve V1; the detection device is arranged on a filter element interface of the water purifier and is communicated with a water pipeline between a water inlet and a water outlet of the water purifier; the detection device at least comprises an air pressure detection module which is used for detecting an air pressure value in a water pipeline between a water inlet and a water outlet of the water purifier; and an electromagnetic control valve V3. Wherein the gas source, the numerical control pressure reducing valve, the electromagnetic control valve V1, the water pipeline between the water inlet and the water outlet of the water purifier and the electromagnetic control valve V3 are sequentially connected in series to form a gas detection path. According to the invention, the technical problem of realizing gas detection of leakage of the water pipeline of the water purifier is solved. Water residues in the water purifier are avoided, the detection efficiency is improved, the detection cost is saved, and the detection accuracy is improved.

Description

Technical Field

[0001] The invention relates to a water leakage detection device for a water purifier, in particular to a gas leakage detection system for a water pipeline of a water purifier. The invention also records a gas leakage detection method for a water pipeline of a water purifier. Background Art

[0002] Existing water purifiers all use filter elements to filter out water flowing through the water purifier pipeline, filter out impurities in the water, and achieve the purpose of purification. For the development and quality inspection of water purifiers, internal water leakage is very common, so leakage detection of water purifiers before leaving the factory has become a major problem.

[0003] The more common method currently used is to use water inspection, which is to pass water into the internal pipes of the water purifier to fill the pipes, then close the water inlet and outlet of the water purifier, and directly observe the leakage of the pipes with the naked eye. However, this method can generally only detect larger leaks, and cannot quickly detect some minor leaks. In addition, there are many human factors and the test results are not accurate. There are also improvements to this by adding some pressure sensors to measure whether the liquid in the pipe is pressurized. But in general, water inspection of water purifiers will inevitably lead to liquid residue inside the water purifier and the filter element, which will easily damage the internal mechanical structure and the life of the filter element over time. The odor will also affect the sales of the product. At the same time, adding water and the subsequent pumping process will also consume more manpower and costs.

[0004] In addition, the traditional water dispenser (drinking device) water pipeline gas leak detection device and method mainly adopts the gas pressure maintenance method, which observes the pressure change by ventilation and pressure maintenance to determine whether the water dispenser will leak. For example, the leak detection device for water dispenser pipeline recorded in the Chinese utility model patent document with patent number CN201720331522.9. This method can well solve the problem of internal liquid residue during the detection process, but considering the irreversible effect of the set pressure value of gas (0.04MPa-0.07MPa) on the normal service life of the water purifier filter element, it cannot be directly applied to the water purifier water pipeline leakage detection.

[0005] Therefore, the applicant proposed the present invention. Summary of the invention

[0006] An object of the present invention is to provide a water purifier water pipe leakage gas detection system to address the problems of water detection residues and low accuracy and efficiency.

[0007] Another object of the present invention is to provide a method for detecting gas leakage in a water pipeline of a water purifier using the above-mentioned gas detection system.

[0008] In order to achieve the above object, the present invention provides a water purifier water pipe leakage gas detection system, which includes: Gas source; CNC pressure reducing valve; Solenoid control valve V1; A detection device, which is installed on the filter element interface of the water purifier and connected to the water pipe between the water inlet and the water outlet of the water purifier; the detection device at least includes an air pressure detection module for detecting the air pressure value in the water pipe between the water inlet and the water outlet of the water purifier; and, a solenoid control valve V3; Among them, the above-mentioned gas source, digital control pressure reducing valve, electromagnetic control valve V1, water pipeline between the water inlet and the water outlet of the water purifier and electromagnetic control valve V3 are connected in series in sequence to form a gas detection path.

[0009] The solution of the present invention realizes the detection of water purifier leakage using gas, and determines whether the water purifier is leaking by the pressure value of the water pipeline of the water purifier detected by the pressure sensor.

[0010] In the above-mentioned water purifier water pipe leakage gas detection system, the gas detection path in the system is preferably connected in series with flow rate sensors L1 and L2; The flow rate sensor L1 is located between the numerical control pressure reducing valve and the electromagnetic control valve V1; and the flow rate sensor L2 is located between the water outlet of the water purifier water pipe and the electromagnetic control valve V3.

[0011] The above-mentioned flow rate sensor L1 can monitor and feedback the air pressure value entering the water inlet of the water purifier in real time. Similarly, the flow rate sensor L2 can monitor and feedback the air pressure value coming out of the water outlet of the water purifier in real time, thereby facilitating the CNC pressure reducing valve to accurately control and adjust the air pressure in the water pipe of the water purifier through the internal intelligent control system, so as to avoid excessive air pressure from damaging the internal structure of the water purifier.

[0012] In the above-mentioned water purifier water pipe leakage gas detection system, the specific structure of the air pressure detection module in the system is preferably selected to include: The solenoid control valve V2 has a valve path of a valve body provided with a reducing section through which the medium flows, and in the conveying direction of the gas in the valve path, the valve core 1 is located at the front section of the reducing section, and the valve core 2 is located at the rear section of the reducing section; The pressure sensor P1 is used to detect the air pressure value in the water pipe of the water purifier between the valve cores of the electromagnetic control valve V1 and the electromagnetic control valve V2; And, a pressure sensor P2, used to detect the air pressure value in the water pipeline of the water purifier between the valve core 2 of the electromagnetic control valve V2 and the electromagnetic control valve V3; The pressure sensors P1 and P2 are both connected in series in the valve path of the electromagnetic control valve V2 and installed on the valve body.

[0013] Similarly, to prevent excessive gas pressure from damaging the internal structure of the water purifier (including but not limited to the booster pump and diaphragm pump on the water pipe of the water purifier), the gas is preferably further depressurized when passing through the gas pressure detection module. For example, taking the actual gas pressure detection in the factory as an example, the gas pressure needs to be reduced from 0.6MPa to 0.05MPa. Therefore, the valve path of the above-mentioned solenoid control valve V2 is provided with a reducing section with a smaller cross-section through which the medium flows, to ensure that the pressure of the passing gas drops to the target range.

[0014] In the above-mentioned water purifier water pipe leakage gas detection system, the detection device in the system is preferably selected to include: Connector, used for sealing the filter element interface of the water purifier; A support frame, used for connecting and supporting the joint and the air pressure detection module; The joint and the air pressure detection module are respectively installed on the two side ends of the support frame.

[0015] The detection device in the above preferred technical solution has a simple and reasonable structural layout, and the structure of the joint and the support frame can be designed according to the filter element and the filter element interface of the water purifier to be detected, and has strong applicability.

[0016] In addition, the present invention provides a method for detecting gas leakage in a water purifier water pipe, which uses the above-mentioned gas leakage detection system for a water purifier water pipe. It includes the following specific steps: Step 1) Pre-test Test the water pipe pressure of the water purifier without ventilation to ensure that the water pipe pressure is normal before ventilation; Step 2) Ventilation and pressure maintenance Ventilate and pressurize the water pipe of the water purifier until it reaches the set maximum air pressure value, and then maintain the pressure; Step 3) Leak detection The leakage of the water pipe of the water purifier can be judged by observing the changes in the air pressure value displayed in real time by the detection device.

[0017] Compared with the prior art, the water purifier water pipeline leakage gas detection system and detection method obtained by the present invention have the following technical effects: The use of gas detection avoids water residue inside the water purifier, improves detection efficiency and saves detection costs. The pressure value is used to determine whether the water pipe of the water purifier is leaking, which reduces the interference of human factors and makes the detection more accurate.

[0018] A new detection device is designed to perform detection by replacing the external connection method of the filter element, avoiding changes to the original structure of the water purifier, making the detection process simpler and more convenient, and greatly improving the efficiency of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a wireframe schematic diagram of a gas leakage detection system for a water purifier water pipe; Figure 2 is a stereogram of a detection device; Figure 3 is a bottom view of a detection device; Figure 4 yes Figure 3 Sectional view of aa in the figure; Figure 5 yes Figure 4 A partial enlarged view of the middle A; Figure 6 It is another wireframe schematic diagram of a gas detection system for water pipe leakage in a water purifier; Figure 7 It is a schematic diagram of the connection between the connector of the detection device and the filter interface of the water purifier.

[0020] In the figure: air pressure detection module 1, connector 2, support frame 3, valve body 4, valve path 5, reducing section 6, valve core 1 7, valve core 2 8, filter element interface 9, protrusion 10, annular groove 11, guide tube 12, pneumatic interface 13, hard tube 14. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0022] like Figure 1 As shown, as an embodiment of the present invention, a water purifier water pipe leakage gas detection system provided in this embodiment includes: Air source; CNC pressure reducing valve; electromagnetic control valve V1; detection device, which is installed to the filter element interface 9 of the water purifier, and the water pipeline between the water inlet and the water outlet of the water purifier is connected; Figure 2-4 As shown, the detection device includes: an air pressure detection module 1, used to detect the air pressure value in the water pipe between the water inlet and the water outlet of the water purifier; a joint 2, used to seal and connect the filter element interface 9 of the water purifier; and a support frame 3, used for connecting and supporting the joint 2 and the air pressure detection module 1; wherein the joint 2 and the air pressure detection module 1 are respectively installed on the two side ends of the support frame 3; and, an electromagnetic control valve V3; Among them, the above-mentioned gas source, digital control pressure reducing valve, electromagnetic control valve V1, water pipeline between the water inlet and the water outlet of the water purifier and electromagnetic control valve V3 are connected in series in sequence to form a gas detection path.

[0023] like Figure 5As shown, the air pressure detection module 1 of the detection device in this embodiment includes: The solenoid control valve V2 has a valve path 5 of a valve body 4 provided with a reducing section 6 through which the medium flows, and in the conveying direction of the gas in the valve path 5, its valve core 1 7 is located at the front section of the reducing section 6, and its valve core 2 8 is located at the rear section of the reducing section 6; a pressure sensor P1 is used to detect the air pressure value in the water pipeline of the water purifier between the solenoid control valve V1 and the valve core 1 7 of the solenoid control valve V2; and a pressure sensor P2 is used to detect the air pressure value in the water pipeline of the water purifier between the valve core 2 8 of the solenoid control valve V2 and the solenoid control valve V3; The pressure sensors P1 and P2 are both connected in series in the valve path 5 of the electromagnetic control valve V2 and mounted on the valve body 4 .

[0024] In addition, this embodiment also provides a method for detecting gas leakage in a water purifier water pipe, which uses the above-mentioned gas leakage detection system for a water purifier water pipe. The method includes the following specific steps: Step 1) Pre-test Test the water pipe pressure of the water purifier without ventilation to ensure that the water pipe pressure is normal before ventilation; Step 2) Ventilation and pressure maintenance The water pipe of the water purifier is ventilated and pressurized until the maximum air pressure value is set. At this stage, the three solenoid control valves V1, V2 and V3 are in the open state to ensure that the airflow passes through the entire gas detection path; Then, the pressure is maintained in stages, for example, ventilation is stopped, and the valve core 1 7 of the electromagnetic control valve V1 and the electromagnetic control valve V2 is closed synchronously, or ventilation is stopped, and the valve core 2 8 of the electromagnetic control valve V2 and the electromagnetic control valve V3 are closed synchronously; Step 3) Leak detection When the ventilation is stopped and the valve cores 7 of the electromagnetic control valves V1 and V2 are closed synchronously to maintain the pressure, the leakage of the water pipe section between the water inlet of the water purifier and the detection device is judged by observing the change of the air pressure value displayed in real time by the pressure sensor P1; Similarly, when ventilation is stopped and the valve core 2 8 of the electromagnetic control valve V2 and the electromagnetic control valve V3 are closed synchronously to maintain pressure, the leakage of the water pipe section between the detection device and the water outlet of the water purifier can be judged by observing the changes in the air pressure value displayed in real time by the pressure sensor P2.

[0025] As a second embodiment of the present invention, a water purifier water pipe leakage gas detection system and detection method provided in this embodiment are substantially the same as the first embodiment described above. Figure 6 As shown, in the present embodiment, a water purifier water pipe leakage gas detection system is provided, wherein the gas detection path in the system is preferably connected in series with flow rate sensors L1 and L2; The flow rate sensor L1 is located between the numerical control pressure reducing valve and the electromagnetic control valve V1; and the flow rate sensor L2 is located between the water outlet of the water purifier water pipe and the electromagnetic control valve V3.

[0026] The above-mentioned flow rate sensor L1 can monitor and feedback the air pressure value entering the water inlet of the water purifier in real time. Similarly, the flow rate sensor L2 can monitor and feedback the air pressure value coming out of the water outlet of the water purifier in real time, thereby facilitating the CNC pressure reducing valve to accurately control and adjust the air pressure in the water pipe of the water purifier through the internal intelligent control system.

[0027] The detection device in the first and second embodiments has a simple and reasonable structural layout. The structure of the joint 2 and the support frame 3 can be designed according to the filter element of the water purifier to be detected and the filter element interface 9, and has strong applicability. For example, the connection method of the joint 2 of the detection device described in the first and second embodiments and the filter element interface 9 of the water purifier is as follows: Figure 2-4 As shown in FIG. 7 , the connector 2 of the detection device is locked with the filter interface 9 of the water purifier by rotating through the protrusion 10 on the outside of the head, and then the sealing of the connection is ensured by installing a sealing ring. There are separate spaces and channels for air inlet and outlet inside the connector 2. The gas flowing into the connector 2 from the water purifier enters the internal space of the connector 2 through the annular groove 11 on the outside of the connector 2, and the gas flowing back from the connector 2 to the water purifier enters the water purifier through the central guide pipe 12. The upper part of the connector 2 is provided with a special threaded hole for installing the pneumatic interface 13, and the corresponding lower part of the valve body 4 of the air pressure detection module 1 is also provided with a threaded hole for installing the pneumatic interface 13, thereby facilitating the connection between the connector 2 and the air pressure detection module 1 through the hard pipe 14. In addition, the support frame 3 described in the first and second embodiments of the present invention is in the shape of a long strip, so that a large torque can be given to the connector 2 by rotating the air pressure detection module 1, thereby facilitating the rotation of the connector 2 to the filter interface 9 of the water purifier.

[0028] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that are the same or similar to those of the present application fall within the protection scope of the present invention.

Claims

1. A water purifier water pipe leakage gas detection system, characterized in that include: Gas source; CNC pressure reducing valve; Solenoid control valve V1; A detection device, which is installed on the filter element interface of the water purifier and connected to the water pipeline between the water inlet and the water outlet of the water purifier; The detection device at least includes an air pressure detection module for detecting the air pressure value in the water pipe between the water inlet and the water outlet of the water purifier; and, a solenoid control valve V3; Among them, the above-mentioned gas source, digital control pressure reducing valve, electromagnetic control valve V1, water pipeline between the water inlet and the water outlet of the water purifier and electromagnetic control valve V3 are connected in series in sequence to form a gas detection path.

2. A water purifier water pipe leakage gas detection system according to claim 1, characterized in that: The gas detection path is also connected in series with flow rate sensors L1 and L2; The flow rate sensor L1 is located between the numerical control pressure reducing valve and the electromagnetic control valve V1; and the flow rate sensor L2 is located between the water outlet of the water purifier water pipe and the electromagnetic control valve V3.

3. A water purifier water pipe leakage gas detection system according to claim 1 or 2, characterized in that The specific structure of the air pressure detection module includes: The solenoid control valve V2 has a valve path of a valve body provided with a reducing section through which the medium flows, and in the conveying direction of the gas in the valve path, the valve core 1 is located at the front section of the reducing section, and the valve core 2 is located at the rear section of the reducing section; The pressure sensor P1 is used to detect the air pressure value in the water pipe of the water purifier between the valve cores of the electromagnetic control valve V1 and the electromagnetic control valve V2; And, a pressure sensor P2, used to detect the air pressure value in the water pipeline of the water purifier between the valve core 2 of the electromagnetic control valve V2 and the electromagnetic control valve V3; The pressure sensors P1 and P2 are both connected in series in the valve path of the electromagnetic control valve V2 and installed on the valve body.

4. A water purifier water pipe leakage gas detection system according to claim 1 or 2, characterized in that The detection device also includes a joint for sealing the filter element interface of the docking water purifier.

5. A water purifier water pipe leakage gas detection system according to claim 3, characterized in that The detection device also includes a joint for sealing the filter element interface of the docking water purifier.

6. A water purifier water pipe leakage gas detection system according to claim 4, characterized in that The detection device also includes a support frame for connecting and supporting the joint and the air pressure detection module; The joint and the air pressure detection module are respectively installed on the two side ends of the support frame.

7. A water purifier water pipe leakage gas detection system according to claim 5, characterized in that The detection device also includes a support frame for connecting and supporting the joint and the air pressure detection module; The joint and the air pressure detection module are respectively installed on the two side ends of the support frame.

8. A method for detecting gas leakage in a water purifier water pipeline, characterized in that: A water purifier water pipe leakage gas detection system as described in any one of claims 1 to 7 is used.

9. A method for detecting gas leakage in a water purifier water pipe according to claim 8, characterized in that The specific steps include: Step 1) Pre-test Test the water pipe pressure of the water purifier without ventilation to ensure that the water pipe pressure is normal before ventilation; Step 2) Ventilation and pressure maintenance Ventilate and pressurize the water pipe of the water purifier until it reaches the set maximum air pressure value, and then maintain the pressure; Step 3) Leak detection The leakage of the water pipe of the water purifier can be judged by observing the changes in the air pressure value displayed in real time by the detection device.

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