Three-way valve debugging instrument

Abstract

The utility model provides a three-way valve debugging instrument, and relates to the technical field of testing, the three-way valve debugging instrument comprises a control panel, a circuit board and a box body, the control panel is provided with a controller, a power switch, a grounding pole, a power inlet wire interface, a voltmeter / ammeter and a signal output interface; the controller is used for controlling voltage / current provided by the signal output interface to the three-way valve; the power switch is used for turning on or off the three-way valve debugging instrument; the grounding pole is used for being connected with an external grounding wire. The power inlet wire interface comprises a live wire interface and a null line interface and is used for connecting an external power supply. The voltmeter / ammeter is connected with the voltage / current output end of the three-way valve; and the signal output interface is connected with a voltage / current input end of the three-way valve. According to the technical scheme, the wiring mode in the three-way valve debugging process can be simplified, and the three-way valve debugging efficiency and accuracy are improved.

Description

Technical Field

[0001] This utility model relates to the field of testing technology, and in particular to a three-way valve debugging instrument. Background Technology

[0002] As a crucial control device in power plants, the electric three-way regulating valve is the actuator in an electric unit combination instrument. After valve installation, acceptance testing must be conducted according to national standards to verify the valve's manufacturing quality and ensure its proper functioning in subsequent production.

[0003] According to the handover test requirements, the on-site tests included limit switch inspection and simulated operation. During the tests, due to the lack of specialized instruments and equipment, a large number of devices and tools were required, posing significant safety risks and increasing the risk of valve damage due to improper operation, thus hindering the efficiency of the on-site tests. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a three-way valve debugging instrument that can directly realize on-site testing of three-way regulating valves through a unified device.

[0005] This utility model provides a three-way valve debugging instrument, characterized in that it includes a control panel, a circuit board and a housing, wherein the control panel is provided with a controller, a power switch, a grounding post, a power input interface, a voltmeter / ammeter and a signal output interface;

[0006] The controller is used to control the voltage / current supplied by the signal output interface to the three-way valve;

[0007] The power switch is used to turn the three-way valve adjustment device on or off.

[0008] The grounding post is used to connect to the external grounding wire to provide grounding protection for the circuit board;

[0009] The power input interface includes a live wire interface and a neutral wire interface, which are used to connect an external power source to provide power to the circuit board.

[0010] The voltage / current meter is connected to the voltage / current output terminal of the three-way valve via a signal output interface, and is used to display the voltage / current supplied by the controller to the three-way valve;

[0011] The signal output interface is also used to connect to the voltage / current input terminal of the three-way valve to control the state of the three-way valve.

[0012] In a preferred embodiment of this utility model, the control panel is further provided with a limit feedback interface and a limit indicator light; the limit feedback interface is connected to the feedback interface of the three-way valve and is used to receive the limit signal fed back by the three-way valve to control the opening and closing of the limit indicator light.

[0013] In a preferred embodiment of this utility model, the number of limit indicator lights is three, which are used to indicate the open state, closed state and intermediate state of the three-way valve, respectively.

[0014] In a preferred embodiment of this invention, the voltage of the external power supply is 220V.

[0015] In a preferred embodiment of this utility model, the circuit board includes: a controller circuit, a power input circuit, a voltmeter / ammeter circuit, and a signal output circuit;

[0016] The power input circuit includes a live wire circuit and a neutral wire circuit. One end of the live wire circuit is connected to the live wire interface, and the other end of the live wire circuit is connected to one end of the power switch.

[0017] The other end of the power switch is connected to the first input terminal of the controller circuit and the first input terminal of the voltage / current meter circuit, respectively.

[0018] The neutral wire circuit is connected to the second input terminal of the controller circuit and the second input terminal of the voltage / current meter circuit, respectively.

[0019] The second input terminal of the voltage / current meter circuit is connected to the signal output interface;

[0020] The output terminal of the controller circuit is connected to the signal output interface.

[0021] In a preferred embodiment of this utility model, the circuit board further includes a limit feedback circuit; wherein, one end of the limit feedback circuit is connected to the limit feedback interface, and the other end of the limit feedback circuit is connected to the limit indicator light.

[0022] In a preferred embodiment of this invention, the number of limit feedback circuits is three.

[0023] In a preferred embodiment of this invention, the circuit board further includes a transformer; the power input interface is connected to the input terminal of the transformer; and the output terminal of the transformer is connected to the third input terminal of the voltage / current meter circuit.

[0024] In a preferred embodiment of this utility model, the transformer includes a high-voltage input terminal, a low-voltage input terminal, a high-voltage output terminal, and a low-voltage output terminal; the high-voltage input terminal is connected to the live wire circuit, the low-voltage input terminal is connected to the other end of the power switch; the high-voltage output terminal is connected to the limit feedback interface, and the low-voltage output terminal is connected to the limit indicator light.

[0025] In a preferred embodiment of this invention, the voltage output from the output terminal of the transformer is 24V.

[0026] The present invention provides the following beneficial effects:

[0027] This utility model provides a three-way valve debugging instrument, which can realize the field test of electric three-way regulating valve through a unified debugging device, simplifying the operation complexity in the test process and improving the efficiency and accuracy of the field test.

[0028] Other features and advantages of this disclosure will be set forth in the following description, or some features and advantages may be inferred from the description or determined without doubt, or may be learned by practicing the techniques described above.

[0029] To make the above-mentioned objects, features and advantages of this disclosure more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1a A structural diagram of a three-way valve adjusting device provided for an embodiment of this utility model;

[0032] Figure 1b A physical image of a three-way valve adjusting device provided for an embodiment of this utility model;

[0033] Figure 2 The schematic diagram of a circuit board for a three-way valve debugging instrument provided in this embodiment of the present invention. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0035] The electric three-way control valve, also known as a three-way valve, is an important control device in power plants and serves as the actuator in an electric unit combination instrument. It receives electrical signals from the regulating instrument and directly changes the flow rate of the controlled medium (such as liquid, gas, steam, etc.) based on these signals, maintaining the controlled process parameters (temperature, flow rate, liquid level, etc.) at a given value. After valve installation, acceptance testing must be conducted according to national standards to verify the valve's manufacturing quality and ensure its proper use in subsequent production.

[0036] According to the handover test requirements, the on-site tests include limit switch checks and simulated operations. Due to the lack of specialized instruments and equipment, numerous devices and tools are required, posing significant safety risks and increasing the risk of valve damage due to improper operation, thus hindering on-site testing efficiency. Therefore, this utility model provides a three-way valve testing instrument that directly enables on-site testing of three-way regulating valves using a unified device.

[0037] To facilitate understanding of this embodiment, a detailed description of a three-way valve adjusting device disclosed in this utility model embodiment will be provided first.

[0038] Example 1

[0039] This utility model embodiment provides a three-way valve adjustment device. Figure 1a This is a structural diagram of a three-way valve adjusting device provided in an embodiment of the present utility model. Figure 1a As shown, the three-way valve debugging device may include: a control panel, a circuit board, and a housing. The control panel is equipped with a controller, a power switch, a grounding post, a power input interface, a voltmeter / ammeter, and a signal output interface. The control panel is located on the upper surface of the housing, and the circuit board is located inside the housing. Figure 1a The structural diagram does not show the specific location of the circuit board. The circuit board can be fixed inside the enclosure according to actual needs.

[0040] The controller is used to control the voltage / current supplied by the signal output interface to the three-way valve;

[0041] The power switch is used to turn the three-way valve adjustment device on or off.

[0042] The grounding post is used to connect to the external grounding wire to provide grounding protection for the circuit board;

[0043] The power input interface includes a live wire interface and a neutral wire interface, which are used to connect an external power source to provide power to the circuit board.

[0044] The voltage / current meter is connected to the voltage / current output terminal of the three-way valve via a signal output interface, and is used to display the voltage / current supplied by the controller to the three-way valve;

[0045] The signal output interface is also used to connect to the voltage / current input terminal of the three-way valve to control the state of the three-way valve.

[0046] The controller is used to control the voltage / current output by the signal output interface; the power switch is used to control the power supply of the three-way valve tester to be turned on or off; the grounding post is used to provide grounding protection for the three-way valve tester; the power input line is used to provide test voltage to the three-way valve tester; the limit indicator light is used to display the on / off status of the three-way valve; the voltage / current meter is used to receive and display the voltage / current output by the three-way valve tester; and the signal output interface is used to connect to the three-way valve and control the on / off status of the three-way valve.

[0047] Understandably, during on-site testing of an electric three-way control valve using a three-way valve testing instrument, a suitable wiring method is selected based on the valve's schematic diagram to quickly connect the instrument and the valve. For example, an electric three-way control valve typically has multiple terminals. Based on the valve's schematic diagram, the terminals that need to be connected to the testing instrument can be identified. An external power supply (220V) is provided to the testing instrument by connecting a lead wire to the external power input interface. The testing instrument is then grounded by connecting a lead wire to the grounding post and the test site's ground wire, providing grounding protection. After turning on the power switch, the testing instrument begins operation. The operator uses the controller and signal output interface to provide voltage / current signals to the testing instrument, controlling the three-way valve to different states using varying voltage / current signals. Specifically, during the connection process between the signal output interface of the three-way valve tester and the three-way valve tester, two connecting lines need to be led out from the signal output port and connected to the terminals of the three-way valve to provide voltage / current signals to the three-way valve.

[0048] Furthermore, the controller can be equipped with adjustment buttons, allowing operators to control the voltage / current signal output from the signal output interface. For example, the adjustment buttons may include an increase button and a decrease button. Operators can increase the voltage / current signal output from the signal output interface by pressing the increase button and decrease the voltage / current signal by pressing the decrease button. Each press of the adjustment button increases or decreases the voltage / current signal by a preset value. The controller can also be equipped with a display screen to show the voltage / current signal output from the signal output interface.

[0049] The staff repeatedly pressed the adjustment button on the controller to input different voltage / current signals into the three-way valve and checked whether the state of the three-way valve was abnormal. If there was no abnormality, the staff recorded the voltage / current signals output by the signal output port of the three-way valve under different states to complete the field test.

[0050] Furthermore, the control panel is equipped with a limit feedback interface and limit indicator lights. The limit feedback interface is connected to the feedback interface of the three-way valve and is used to receive the limit signal fed back by the three-way valve to control the opening and closing of the limit indicator lights. There are three limit indicator lights, which are used to indicate the open state, closed state, and intermediate state of the three-way valve, respectively.

[0051] Specifically, the limit signal refers to the status signal output by the three-way valve, used to describe the state of the three-way valve. The state of the three-way valve includes open, closed, and intermediate states. The state of the three-way valve can be determined according to the magnitude of the limit signal. Different states of the three-way valve correspond to different colored limit indicator lights. In this embodiment of the invention, the limit indicator lights are divided into three colors: red, green, and yellow. The correspondence between the color of the limit indicator light and the state of the three-way valve can be determined according to the actual situation. When the limit indicator light is on, the three-way valve is in the state corresponding to the color of the limit indicator light. For example, red corresponds to the closed state, green corresponds to the open state, and yellow corresponds to the intermediate state. When the yellow limit indicator light is on, it indicates that the three-way valve is in the intermediate state; when the red limit indicator light is on, it indicates that the three-way valve is in the closed state. Generally, only one of the three limit indicator lights is on.

[0052] Workers can use the limit indicator light to determine the status of the three-way valve, which improves the convenience of the test. At the same time, by comparing the color of the limit indicator light with the status of the three-way valve, they can further determine whether the three-way valve is working properly, thus improving the accuracy of the test.

[0053] Furthermore, Figure 1b A physical image of a three-way valve adjusting device is provided for an embodiment of this utility model. (See attached image.) Figure 1bAs shown, handles are also provided on both the left and right sides of the control panel to facilitate the movement of the three-way valve adjustment device by the operator. The shape and size of the handles can be customized according to the actual situation.

[0054] The three-way valve debugging instrument provided in this embodiment of the invention can realize on-site testing of electric three-way regulating valves through unified debugging equipment, which simplifies the operation complexity in the testing process and improves the efficiency and accuracy of on-site testing.

[0055] Example 2

[0056] This utility model embodiment also provides another three-way valve debugging instrument; the three-way valve debugging instrument is implemented based on the above embodiment.

[0057] Figure 2 This is a schematic diagram of a circuit board for a three-way valve adjusting device provided in an embodiment of this utility model. Figure 2 As shown, the circuit board includes: a controller circuit 001MI, a power input circuit, a voltage / current meter circuit 001ID, and a signal output circuit;

[0058] The power input circuit includes a live wire circuit L and a neutral wire circuit N. One end of the live wire circuit is connected to the live wire interface, and the other end of the live wire circuit is connected to one end of the power switch 001QF. Furthermore, a fuse 001FU can be installed on the live wire circuit and the neutral wire circuit respectively. The fuse ensures that when the current in the live wire circuit or the neutral wire circuit exceeds the current threshold, the live wire circuit or the neutral wire circuit is cut off, providing current protection for the circuit board of the three-way valve debugging instrument.

[0059] The other end of the power switch 001QF is connected to the first input terminal 7 of the controller circuit 001MI and the first input terminal 7 of the voltage / current meter circuit 001ID, respectively.

[0060] The neutral wire circuit is connected to the second input terminal 8 of the controller circuit 001MI and the second input terminal 8 of the voltage / current meter circuit 001ID, respectively.

[0061] The second input terminal 3 of the voltage / current meter circuit 001ID is connected to the signal output interface to obtain the actual value of the voltage / current supplied by the controller to the three-way valve and display it.

[0062] The output terminal of the controller circuit 001MI is connected to the signal output interface. The output terminal of the controller circuit 001MI includes a positive output terminal 15 and a negative output terminal 16, used to output voltage / current signals to the signal output interface.

[0063] The circuit board also includes a limit feedback circuit; wherein one end of the limit feedback circuit is connected to the limit feedback interface, and the other end of the limit feedback circuit is connected to the limit indicator light.

[0064] There are three limit feedback circuits.

[0065] In this embodiment of the invention, the limit feedback interface can be described by a switch, such as... Figure 2 As shown, switches SM3, SM5, and SM7 represent the limit feedback interface. Switch SM3 is connected in series with limit indicator light 003LA, switch SM5 is connected in series with limit indicator light 002LA, and switch SM7 is connected in series with limit indicator light 001LA. For example, different switch closures correspond to different limit signal magnitudes received by the limit feedback interface. When a switch is closed, the limit indicator light connected in series with the switch turns on; when the switch is open, the limit indicator light connected in series with the switch turns off.

[0066] The circuit board also includes a transformer 001TR, used to convert the 220V external power supply to 24V for the operation of the voltage / current meter and controller; the power input interface is connected to the input terminal of the transformer; the output terminal of the transformer is connected to the third input terminal of the voltage / current meter circuit. The third input terminal of the voltage / current meter circuit includes port 1, port 4, and port 5.

[0067] The transformer includes a high-voltage input terminal, a low-voltage input terminal, a high-voltage output terminal, and a low-voltage output terminal; the high-voltage input terminal is connected to the live wire circuit, and the low-voltage input terminal is connected to the other end of the power switch; the high-voltage output terminal is connected to the limit feedback interface, and the low-voltage output terminal is connected to the limit indicator light.

[0068] Furthermore, the high voltage output terminal is connected to ports 1 and 4 of the voltage / ammeter circuit, and the low voltage output terminal is connected to port 5 of the voltage / ammeter circuit and the signal output port, respectively.

[0069] The output voltage of the transformer is 24V.

[0070] Furthermore, fuses 001QF are installed on both the live wire and neutral wire circuits to provide short-circuit protection for the circuit board. These fuses will promptly disconnect the live wire and neutral wire circuits when the current in the circuit board is too high. Multiple branch terminals 001BN are also installed on the circuit board to enable parallel connections of the circuits.

[0071] The three-way valve debugging instrument provided in this embodiment of the invention can realize on-site testing of electric three-way regulating valves through unified debugging equipment, which simplifies the operation complexity in the testing process and improves the efficiency and accuracy of on-site testing.

[0072] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0073] Finally, it should be noted that the above-described embodiments are merely specific implementations of this utility model, used to illustrate the technical solution of this utility model, and not to limit it. The protection scope of this utility model is not limited thereto. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this utility model. These modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A three-way valve adjustment device, characterized in that, include: The control panel, circuit board, and enclosure are provided. The control panel is equipped with a controller, power switch, grounding post, power input interface, voltmeter / ammeter, and signal output interface. The controller is used to control the voltage / current supplied by the signal output interface to the three-way valve; The power switch is used to turn the three-way valve adjustment device on or off. The grounding post is used to connect to the external grounding wire to provide grounding protection for the circuit board; The power input interface includes a live wire interface and a neutral wire interface, which are used to connect an external power source to provide power to the circuit board. The voltage / current meter is connected to the voltage / current output terminal of the three-way valve via a signal output interface, and is used to display the voltage / current supplied by the controller to the three-way valve; The signal output interface is also used to connect to the voltage / current input terminal of the three-way valve to control the state of the three-way valve.

2. The three-way valve adjusting device according to claim 1, characterized in that, The control panel is also equipped with a limit feedback interface and a limit indicator light; the limit feedback interface is connected to the feedback interface of the three-way valve and is used to receive the limit signal fed back by the three-way valve in order to control the opening and closing of the limit indicator light.

3. The three-way valve adjusting instrument according to claim 2, characterized in that, The number of limit indicator lights is three, which are used to indicate the open state, closed state and intermediate state of the three-way valve, respectively.

4. The three-way valve adjusting instrument according to claim 1, characterized in that, The voltage of the external power supply is 220V.

5. The three-way valve adjusting device according to claim 2, characterized in that, The circuit board includes: a controller circuit, a power input circuit, a voltmeter / ammeter circuit, and a signal output circuit; The power input circuit includes a live wire circuit and a neutral wire circuit. One end of the live wire circuit is connected to the live wire interface, and the other end of the live wire circuit is connected to one end of the power switch. The other end of the power switch is connected to the first input terminal of the controller circuit and the first input terminal of the voltage / current meter circuit, respectively. The neutral wire circuit is connected to the second input terminal of the controller circuit and the second input terminal of the voltage / current meter circuit, respectively. The second input terminal of the voltage / current meter circuit is connected to the signal output interface; The output terminal of the controller circuit is connected to the signal output interface.

6. The three-way valve adjusting device according to claim 5, characterized in that, The circuit board also includes a limit feedback circuit; wherein one end of the limit feedback circuit is connected to the limit feedback interface, and the other end of the limit feedback circuit is connected to the limit indicator light.

7. The three-way valve adjusting device according to claim 6, characterized in that, The number of limit feedback circuits is three.

8. The three-way valve adjusting instrument according to claim 5, characterized in that, The circuit board also includes a transformer; the power input interface is connected to the input terminal of the transformer; the output terminal of the transformer is connected to the third input terminal of the voltage / current meter circuit.

9. The three-way valve adjusting instrument according to claim 8, characterized in that, The transformer includes a high-voltage input terminal, a low-voltage input terminal, a high-voltage output terminal, and a low-voltage output terminal; the high-voltage input terminal is connected to the live wire circuit, and the low-voltage input terminal is connected to the other end of the power switch; the high-voltage output terminal is connected to the limit feedback interface, and the low-voltage output terminal is connected to the limit indicator light.

10. The three-way valve adjusting instrument according to claim 8, characterized in that, The voltage output from the transformer's output terminal is 24V.

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