Safe power supply device and detection system of proportional valve
By designing a proportional valve safety power supply device including a current detection module and an alarm module, the problem of unstable power supply during proportional valve detection is solved, and more accurate and safe airtightness detection is achieved.
Patent Information
- Application Number
- CN202420579769.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-25
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-03-25
AI Technical Summary
During the detection of proportional valves, since the line connector needs to be plugged and unplugged multiple times, poor contact is prone to occur, resulting in unstable power supply of proportional valves, affecting the accuracy of airtightness detection.
Design a safe power supply device for proportional valves, including power supply modules, circuit communication modules, power supply output modules, signal reception modules and current detection modules. The current detection module is used to monitor the current status of the power supply line in real time to ensure that the proportional valves are supplied with stable power during the detection process, and avoid load-loaded operations through the alarm module and feedback module.
It realizes safe power supply of proportional valves during the inspection process, avoids false power supply connections and poor coil problems caused by poor contact, improves the accuracy and safety of airtightness detection, and reduces equipment damage and operation risks.
Smart Images
Figure CN222673937U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of proportional valve detection, in particular to a safe power supply device and a detection system for a proportional valve. Background Art
[0002] In gas appliances (such as gas heating water boilers, water heaters, etc.), gas proportional valves (also called gas valves) are often used. The gas proportional valves are used to adjust the amount of gas so that it matches the air and is fully burned in the gas appliances.
[0003] Generally, before installing the proportional valve on the product, the proportional valve needs to be tested first, such as the air tightness test. This test is performed by fixing the proportional valve on the test fixture, then connecting the air tightness tester, and then connecting the proportional valve through the line connector, energizing the proportional valve, and then opening the internal valve of the proportional valve to detect the internal leakage of the entire proportional valve. However, in the above-mentioned detection process, since the line connector of the proportional valve needs to be plugged and unplugged many times, it is easy to have poor contact problems. Therefore, when powering the proportional valve, it is necessary to test the circuit of the proportional valve first to determine that there are no test problems such as power supply virtual connection, coil failure such as line short circuit, open circuit, and coil turns not matching in the circuit of the proportional valve before the next step of air tightness detection can be carried out. Otherwise, due to problems such as "power supply line virtual connection, gas valve coil failure", the proportional valve is not normally energized, and when the valve does not move, its air tightness cannot be detected to see whether it meets the normal range requirements. Finally, the valve that fails the air tightness test flows into the next process and is installed on the product, which is easy to cause product quality abnormalities and affect the normal operation of the product.
[0004] In the existing literature, a detection circuit of a proportional valve is disclosed. In the detection circuit, a current detection module is added between the power supply circuit and the proportional valve. The ammeter of the device is visually observed to determine whether the power supply of the gas valve is effectively connected. However, the device needs to be operated by plugging and unplugging the power supply circuit end. The above operation belongs to load operation and there is a safety hazard of electric arc. If the operation is not careful, the equipment will short-circuit, which will damage the equipment on the one hand and affect the subsequent work efficiency on the other. Utility Model Content
[0005] In order to overcome the deficiencies of the prior art, one of the objectives of the present invention is to provide a safe power supply device for a proportional valve to solve the above-mentioned traditional problems.
[0006] The second object of the utility model is to provide a detection system for a safety power supply device using the proportional valve.
[0007] One of the purposes of the utility model is achieved by the following technical solution:
[0008] A safe power supply device for a proportional valve, wherein the proportional valve is connected to an air tightness detector, the safe power supply device comprises a power supply module, a circuit connection module connected to the power supply module, a power supply output module and a signal receiving module respectively connected to the circuit connection module, a current detection module is connected in series between the circuit connection module and the power supply output module, the output end of the power supply output module is used to connect to the power connection end of the proportional valve, and the receiving end of the signal receiving module is used to connect to the signal end of the air tightness detector.
[0009] Preferably, the power module consists of a plug and a wire.
[0010] Preferably, the plug is a leakage protection plug.
[0011] Preferably, the circuit connection module is one of a relay, a switching diode, a switching transistor, an electronic bidirectional switch IC, and an integrated switching circuit.
[0012] Preferably, the power supply output module consists of a valve body power connector and a wiring harness.
[0013] Preferably, the current detection module includes a meter head body, a current display screen and a current setting button installed on the meter head body, and the meter head body is electrically connected to the current display screen and the current setting button respectively.
[0014] Preferably, the safety power supply device further comprises an integrated housing, and the circuit connection module and the current detection module are mounted on the integrated housing.
[0015] Preferably, an alarm module electrically connected to the current detection module is installed on the top of the integrated housing, and the alarm module includes an alarm light and a buzzer.
[0016] Preferably, the alarm module is further provided with a feedback module, and the feedback module is electrically connected to the circuit connection module and / or the air tightness detector.
[0017] The second purpose of the utility model is achieved by the following technical solution:
[0018] A detection system comprises a proportional valve, an airtightness detector connected to the proportional valve, and the above-mentioned safety power supply device, wherein the safety power supply device comprises a power supply module, a circuit connection module connected to the power supply module, a power supply output module and a signal receiving module respectively connected to the circuit connection module, a current detection module is connected in series between the circuit connection module and the power supply output module, the output end of the power supply output module is connected to the power connection end of the proportional valve, and the receiving end of the signal receiving module is connected to the signal end of the airtightness detector.
[0019] Compared with the prior art, the beneficial effects of the present invention are:
[0020] 1. The safety power supply device of the proportional valve of the utility model is composed of modules such as a power supply module, a circuit connection module, a power supply output module, a signal receiving module and a current detection module. The signal receiving module is used to receive the start signal of the air tightness detector and feed it back to the circuit connection module to connect it to the power supply to supply power to the proportional valve. The current in the power supply circuit is then received through the current detection module to intuitively feedback whether the circuit of the proportional valve is within a normal range. If a problem is found in the current, the air tightness detector can be turned off to make the circuit connection module "disconnected", thereby avoiding load operation of the power supply output module.
[0021] 2. The safety power supply device for the proportional valve of the utility model is provided with an alarm module. On the one hand, it can provide prompts through voice control and warning lights, etc. On the other hand, it can also disconnect the circuit connection module and / or turn off the power of the air tightness detector by setting modes such as the sending unit and the receiving unit, and then feed back the shutdown signal to the circuit connection module to disconnect the circuit, thereby achieving safer operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a front structural schematic diagram of the safety power supply device for the proportional valve of the utility model;
[0023] Figure 2 for Figure 1 A schematic diagram of the rear structure of the safety power supply device of the proportional valve shown;
[0024] Figure 3 for Figure 1 A side structural diagram of a safety power supply device for a proportional valve shown;
[0025] Figure 4 It is a connection diagram of the detection system of the utility model.
[0026] In the figure: 10, power supply module; 20, circuit connection module; 30, power supply output module; 40, signal receiving module; 50, current detection module; 60, proportional valve; 70, air tightness detector; 80, integrated housing; 90, alarm module. DETAILED DESCRIPTION
[0027] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.
[0028] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0029] In the description of the present utility model, it is necessary to understand that when an element is considered to be "connected" to another element, it may be directly connected to another element or there may be intermediate elements at the same time. On the contrary, when an element is said to be "directly" connected to another element, there are no intermediate elements.
[0030] See also Figure 1-Figure 3 , which is a safe power supply device of a preferred embodiment of the utility model, is used to provide safe power supply to a proportional valve 60, and the proportional valve 60 is connected to an air tightness detector 70. Specifically, the safe power supply device includes a power module 10, a circuit connection module 20 connected to the power module 10, a power supply output module 30 and a signal receiving module 40 respectively connected to the circuit connection module 20, and a current detection module 50 is connected in series between the circuit connection module 20 and the power supply output module 30. The output end of the power supply output module 30 is used to connect to the power connection end of the proportional valve 60, and the receiving end of the signal receiving module 40 is used to connect to the signal end of the air tightness detector 70.
[0031] The above-mentioned safe power supply device is composed of modules such as a power supply module 10, a circuit connection module 20, a power supply output module 30, a signal receiving module 40 and a current detection module 50. The signal receiving module 40 is used to receive the start signal of the air tightness detector 70, and feed it back to the circuit connection module 20 to connect it to the power supply and supply power to the proportional valve 60. The current detection module 50 then receives the current in the power supply line to intuitively feedback whether the line of the proportional valve 60 is within a normal range. If a problem is found with the current, the air tightness detector 70 can be turned off to make the circuit connection module 20 "disconnected", thereby avoiding load operation of the power supply output module 30.
[0032] In one embodiment, the power module 10 is composed of a plug and a wire. By inserting the plug into the line of the power supply equipment in the factory area, it can be a 220V or other low voltage circuit. The corresponding power supply equipment can be selected according to the specific power consumption of the proportional valve 60. Optionally, the plug is a leakage protection plug to improve the safety performance of the equipment.
[0033] In other embodiments, the circuit connection module 20 is one of a relay, a switch diode, a switch transistor, an electronic bidirectional switch IC, and an integrated switch circuit. The above circuit connection module 20 can select a corresponding module according to a specific circuit connection mode. In this embodiment, the circuit connection module 20 is a relay, which can connect or disconnect the control circuit according to the change of the start input signal of the airtightness detector 70 to realize automatic control and protection of the electric drive system.
[0034] In one embodiment, the power output module 30 is composed of a valve body power connector and a wiring harness. The structure of the valve body power connector is matched with the structure of the power connector of the proportional valve 60, and the details are not described here one by one.
[0035] In this embodiment, the current detection module 50 includes a meter body, a current display screen installed on the meter body, and a current setting button, and the meter body is electrically connected to the current display screen and the current setting button, respectively. The current display screen is used to display the current value, and the current setting button is used to set the current value to monitor whether the current of the proportional valve 60 is normal.
[0036] In this embodiment, the safety power supply device also includes an integrated housing 80, and the circuit connection module 20 and the current detection module 50 are installed on the integrated housing 80, which is easy to carry and improves the safety performance of the equipment. In one embodiment, an alarm module 90 electrically connected to the current detection module 50 is installed on the top of the integrated housing 80. The alarm module 90 includes an alarm light and a buzzer, which can warn the operator through voice control and the function of the warning light. The alarm module 90 is also provided with a feedback module, and the feedback module is electrically connected to the circuit connection module 20 and / or the air tightness detector 70. By setting modes such as the sending unit and the receiving unit, the circuit connection module 20 is disconnected, and / or the air tightness detector 70 is turned off, and then the shutdown signal is fed back to the circuit connection module 20 to disconnect the circuit, so as to achieve safer operation.
[0037] The operating steps of the above-mentioned safe power supply device are:
[0038] Plug in the power module 10, plug in the air tightness detector 70, connect the equipment with the proportional valve 60 and the air tightness detector 70, and then start the air tightness detector 70. The signal receiving module 40 feeds back the "test start signal" to the circuit connection module 20 to close the circuit, and then the proportional valve 60 is powered through the power output module 30. The power supply current can be fed back through the current detection module 50. If the current value is within the set range, the air tightness detector 70 performs an air tightness test on the proportional valve 60. After the test is completed, the air tightness detector 70 stops, the circuit connection module 20 is interrupted, and the power supply to the proportional valve 60 stops. After disconnecting other connections, the detection of the proportional valve 60 is completed. If the current value is not within the set range, the alarm light and buzzer sound an alarm. After receiving the warning, the operator will test it again. The proportional valve 60 can be judged as a defective product, and the material is returned and the analysis results are output, and the test is completed.
[0039] For example Figure 4 The utility model also provides a detection system, including a proportional valve 60, an airtightness detector 70 connected to the proportional valve 60, and the safety power supply device of the above embodiment, the safety power supply device includes a power module 10, a circuit connection module 20 connected to the power module 10, a power output module 30 and a signal receiving module 40 respectively connected to the circuit connection module 20, a current detection module 50 is connected in series between the circuit connection module 20 and the power output module 30, the output end of the power output module 30 is connected to the power connection end of the proportional valve 60, and the receiving end of the signal receiving module 40 is connected to the signal end of the airtightness detector 70. Through the above equipment, the safety of the proportional valve 60 during the airtightness detection process is improved.
[0040] The above detection system also includes the following advantages: ① The gas valve test power supply can be plugged and unplugged without load, avoiding arc hazards caused by load operation of the gas proportional valve 60 test; ② By setting the current value, the test gas valve is monitored to see whether it is powered on normally and whether the test current is normal. The alarm mechanism helps the tester to quickly determine whether the gas proportional valve 60 test is effectively connected and whether the inside of the gas valve coil is normal; ③ It is compatible with the current visual function to improve the detection reliability; ④ Power is supplied during the test and power is cut off after the test, which improves the power efficiency and saves power consumption.
[0041] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0042] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A safety power supply device for a proportional valve, wherein the proportional valve is connected to an air tightness detector, characterized in that: The safety power supply device includes a power supply module, a circuit connection module connected to the power supply module, a power supply output module and a signal receiving module respectively connected to the circuit connection module, a current detection module is connected in series between the circuit connection module and the power supply output module, the output end of the power supply output module is used to connect to the power connection end of the proportional valve, and the receiving end of the signal receiving module is used to connect to the signal end of the air tightness detector.
2. The safety power supply device for a proportional valve according to claim 1, characterized in that: The power module consists of a plug and wires.
3. The safety power supply device for a proportional valve according to claim 2, characterized in that: The plug is a leakage protection plug.
4. The safety power supply device for a proportional valve according to claim 1, characterized in that: The circuit connection module is one of a relay, a switching diode, a switching transistor, an electronic bidirectional switch IC, and an integrated switching circuit.
5. The safety power supply device for a proportional valve according to claim 1, characterized in that: The power supply output module is composed of a valve body power connector and a wiring harness.
6. The safety power supply device for a proportional valve according to claim 1, characterized in that: The current detection module includes a meter body, a current display screen and a current setting button installed on the meter body, and the meter body is electrically connected to the current display screen and the current setting button respectively.
7. The safety power supply device for a proportional valve according to claim 1, characterized in that: The safety power supply device further comprises an integrated housing, and the circuit connection module and the current detection module are mounted on the integrated housing.
8. The safety power supply device for a proportional valve according to claim 7, characterized in that: An alarm module electrically connected to the current detection module is installed on the top of the integrated housing, and the alarm module includes an alarm light and a buzzer.
9. The safety power supply device for a proportional valve according to claim 8, characterized in that: The alarm module is further provided with a feedback module, and the feedback module is electrically connected to the circuit connection module and / or the air tightness detector.
10. A detection system, characterized in that: It includes a proportional valve, an airtightness detector connected to the proportional valve, and a safe power supply device as described in any one of claims 1 to 9, wherein the safe power supply device includes a power supply module, a circuit connection module connected to the power supply module, a power supply output module and a signal receiving module respectively connected to the circuit connection module, a current detection module is connected in series between the circuit connection module and the power supply output module, the output end of the power supply output module is connected to the power connection end of the proportional valve, and the receiving end of the signal receiving module is connected to the signal end of the airtightness detector.