Vibration detection V-shaped ball valve
The combination of vibration detection circuit and flow sensor solves the problem of vibration judgment when the V-type ball valve leaks, realizes visual prompt of leakage, and improves the maintenance efficiency of the equipment.
Patent Information
- Application Number
- CN202423056082.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-09-23
- Estimated Expiration
- 2034-12-11
AI Technical Summary
When there is a leakage gap between the ball and the valve seat of the existing V-type ball valve, it is impossible to accurately judge the continuous vibration phenomenon, and the vibration sensor alone cannot effectively identify it.
A vibration detection circuit is used, including a vibration sensor, a flow sensor, a voltage comparison circuit and a switching circuit. By monitoring the vibration and flow signal of the valve body, it is determined whether there is a leak. The AND gate circuit and trigger circuit are used to control the power supply of the prompt component to achieve a visual prompt of the leak.
Accurate detection of V-type ball valve leakage is achieved, and operation and maintenance personnel can judge the leakage situation through the prompt light, which improves the maintenance efficiency of the equipment.
Smart Images
Figure CN223375153U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ball valves, in particular to a vibration detection V-shaped ball valve. Background Art
[0002] The V-type ball valve is a specially designed ball valve whose core feature is the V-shaped cutout design of the valve core. This structure gives it unique advantages when regulating fluid media. The V-type ball valve can achieve precise flow control and is particularly suitable for fluids containing solid particles or fibers, because its V-shaped cutout can cut through fibers and solid particles during rotation, preventing them from getting stuck when the valve is closed. In addition, the flow characteristics of the V-type ball valve are close to equal percentages, which means that it can adjust the flow over a wide range with high adjustment accuracy. V-type ball valves are widely used in industries such as petrochemicals, natural gas, papermaking, electric power, and metallurgy, especially in situations where precise flow control and the handling of complex media are required. Its design can achieve both rapid shut-off and is suitable for working conditions that require fine adjustment. It is an indispensable component in industrial fluid control.
[0003] During the normal opening and closing process of a V-type ball valve, water hammer will occur, causing the entire ball valve to vibrate. However, the vibration caused by the water hammer phenomenon can be eliminated by a water hammer eliminator or the water hammer phenomenon can be slowed down by controlling the closing speed of the ball in the ball valve. However, when the ball closes the flow channel in the ball valve, if there is a leakage gap between the ball and the valve seat, the ball valve will continue to vibrate, and this phenomenon cannot be accurately detected by a vibration sensor alone.
[0004] Therefore, a vibration detection V-type ball valve is proposed to solve or alleviate the above problems. Utility Model Content
[0005] The utility model aims to solve the shortcomings in the prior art and proposes a vibration detection V-shaped ball valve.
[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:
[0007] A vibration detection V-type ball valve includes a valve body, a detection circuit, a switching circuit, and a prompting member. The detection circuit collects the flow and vibration conditions in the valve body and outputs a signal to the switching circuit. The controlled end of the switching circuit is coupled to the output end of the detection circuit. The switching circuit is connected in series with the prompting member. The switching circuit controls the prompting member to be energized in response to the signal from the detection circuit.
[0008] Preferably, the detection circuit includes a vibration circuit, and the vibration circuit includes
[0009] A vibration sensor is provided on the valve body, wherein a detection end of the vibration sensor contacts the valve body, and the vibration sensor collects vibration conditions of the valve body and feeds back a vibration signal;
[0010] A first voltage comparison circuit, wherein the input end of the first voltage comparison circuit is coupled to the output end of the vibration sensor, and the first voltage comparison circuit outputs a first comparison signal in response to the voltage of the vibration signal being greater than the voltage of a preset vibration reference signal.
[0011] Preferably, the first voltage comparison circuit comprises a minimum circuit based on a voltage comparator LM339.
[0012] Preferably, the detection circuit further includes a flow circuit, and the flow circuit includes
[0013] A flow sensor is provided on the valve body, wherein the detection end of the flow sensor is provided in the outlet end of the valve body, and the flow sensor is used to collect the flow in the valve body and output a flow signal;
[0014] an upper and lower limit voltage comparison circuit, wherein the input end of the upper and lower limit voltage comparison circuit is coupled to the output end of the flow sensor, and the upper and lower limit voltage comparison circuit feeds back a second comparison signal in response to the voltage of the flow signal being between the voltage of the upper limit flow signal and the voltage of the lower limit flow signal;
[0015] A delay circuit, wherein the input end of the delay circuit is coupled to the output end of the upper and lower limit voltage comparison circuit, and the delay circuit starts timing in response to the second comparison signal and outputs a delay signal after the timing ends.
[0016] Preferably, the upper and lower limit voltage comparison circuit includes two minimum circuits based on the voltage comparator LM311, and an AND circuit. The input ends of the upper and lower limit voltage comparison circuit are connected to the positive input end of one voltage comparator LM311 and the negative input end of another voltage comparator LM311. The two input ends of the AND circuit are respectively coupled to the output ends of the two voltage comparators LM311, and the delay circuit includes an RC delay circuit.
[0017] Preferably, the detection circuit also includes an AND gate circuit and a trigger circuit, the input end of the AND gate circuit is coupled to the output end of the first voltage comparison circuit and the delay circuit respectively, the AND gate circuit outputs a judgment circuit after responding to the first comparison signal and the delay signal at the same time, the input end of the trigger circuit is coupled to the output end of the AND gate circuit, and the trigger circuit outputs a trigger signal after responding to the judgment signal.
[0018] Preferably, the trigger circuit includes an RS trigger.
[0019] Preferably, the controlled end of the switch circuit is coupled to the output end of the trigger circuit, one end of the switch circuit is connected to the electrical device, and the other end of the switch circuit is coupled to the prompt member.
[0020] Preferably, the switching circuit includes a transistor switch, the base of the transistor switch is coupled to the output end of the trigger circuit, the collector of the transistor switch is connected to electricity, the emitter of the transistor switch is connected to the prompt member and then grounded, and the prompt member includes a prompt light.
[0021] The utility model has the following beneficial effects:
[0022] The utility model monitors the vibration of the valve body through a vibration sensor and feeds back the signal to the first voltage comparison circuit. If the vibration exceeds a preset value, a signal is output to the AND gate circuit, indicating that vibration has occurred. The flow sensor detects the flow at the valve body outlet, and the signal is sent to the upper and lower limit voltage comparison circuit. Two LM311 comparators provide the flow signal voltage. If the flow is between the upper and lower limits, a second signal is output to indicate leakage. When the vibration and leakage signals are met at the same time, the AND gate circuit activates the trigger circuit, causing the transistor to conduct and the prompt light to light up. Operation and maintenance personnel can judge the leakage by the prompt light. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.
[0024] Figure 1 It is a structural diagram of the utility model;
[0025] Figure 2 This is a structural block diagram of the detection circuit in this utility model.
[0026] 1. Valve body; 2. Vibration sensor; 3. First voltage comparison circuit; 4. Flow sensor; 5. Upper and lower limit voltage comparison circuit; 6. Delay circuit; 7. AND gate circuit; 8. Trigger circuit; 9. Switch circuit; 10. Warning light. DETAILED DESCRIPTION
[0027] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.
[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.
[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.
[0030] In the description of the present invention, it should be understood that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the utility model product is usually placed when in use, or are the orientation or position relationship commonly understood by those skilled in the art. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0031] Furthermore, the terms “first,” “second,” “third,” etc., are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.
[0032] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.
[0033] A vibration detection V-type ball valve, such as Figure 1 and Figure 2 As shown, it includes a valve body 1, a detection circuit, a switch circuit 9, and a prompt member. The detection circuit collects the flow and vibration conditions in the valve body 1 and outputs a signal to the switch circuit 9. The controlled end of the switch circuit 9 is coupled to the output end of the detection circuit. The switch circuit 9 is connected in series with the prompt member. The switch circuit 9 controls the prompt member to be energized in response to the signal from the detection circuit.
[0034] The detection circuit includes a vibration circuit, a flow circuit, an AND gate circuit 7 and a trigger circuit 8. The controlled end of the switch circuit 9 is coupled to the output end of the trigger circuit 8. One end of the switch circuit 9 is connected to an electrical setting. The other end of the switch circuit 9 is coupled to a prompt member. The switch circuit 9 includes a transistor switch. The base of the transistor switch is coupled to the output end of the trigger circuit 8. The collector of the transistor switch is connected to electricity. The emitter of the transistor switch is connected to the prompt member and then grounded. The prompt member includes a prompt light 10.
[0035] The vibration circuit includes a vibration sensor 2 and a first voltage comparison circuit 3 , and the flow circuit includes a flow sensor 4 , an upper and lower limit voltage comparison circuit 5 , and a delay circuit 6 .
[0036] The vibration sensor 2 is arranged on the valve body 1, and the detection end of the vibration sensor 2 is in contact with the valve body 1. The vibration sensor 2 collects the vibration of the valve body 1 and feeds back a vibration signal. The input end of the first voltage comparison circuit 3 is coupled to the output end of the vibration sensor 2. The first voltage comparison circuit 3 outputs a first comparison signal in response to the voltage of the vibration signal being greater than the voltage of a preset vibration reference signal. The first voltage comparison circuit 3 includes a minimum circuit based on the voltage comparator LM339.
[0037] A flow sensor 4 is disposed on the valve body 1, with a detection end of the flow sensor 4 disposed within the outlet end of the valve body 1. The flow sensor 4 is configured to collect the flow within the valve body 1 and output a flow signal. An input end of an upper and lower limit voltage comparison circuit 5 is coupled to an output end of the flow sensor 4. In response to a flow signal voltage between a predetermined upper limit flow signal and a predetermined lower limit flow signal, the upper and lower limit voltage comparison circuit 5 feeds back a second comparison signal. An input end of a delay circuit 6 is coupled to an output end of the upper and lower limit voltage comparison circuit 5. In response to the second comparison signal, the delay circuit 6 begins timing and outputs a delay signal after timing expires. The upper and lower limit voltage comparison circuit 5 includes two minimum circuits based on a voltage comparator LM311 and an AND circuit. The input ends of the upper and lower limit voltage comparison circuit 5 are connected to the positive input end of one voltage comparator LM311 and the negative input end of another voltage comparator LM311. The two input ends of the AND circuit are respectively coupled to the output ends of the two voltage comparators LM311. The delay circuit 6 includes an RC delay circuit.
[0038] The input end of the AND gate circuit 7 is coupled to the output end of the first voltage comparison circuit 3 and the delay circuit 6 respectively. The AND gate circuit 7 simultaneously responds to the first comparison signal and the delay signal and then outputs the judgment circuit. The input end of the trigger circuit 8 is coupled to the output end of the AND gate circuit 7. The trigger circuit 8 outputs the trigger signal in response to the judgment signal. The trigger circuit 8 includes an RS trigger.
[0039] When the present invention is actually working, the vibration sensor 2 in the vibration circuit detects the vibration on the valve body 1 and feeds back the vibration signal to the first voltage comparison circuit 3. The first voltage comparison circuit 3 outputs a first comparison signal to the AND gate circuit 7 in response to the voltage of the vibration signal being greater than the voltage of the preset vibration reference signal. At this time, it indicates that the V-type ball valve has vibrated. The flow sensor 4 in the flow circuit can detect the fluid flow at the outlet end of the valve body 1 and feed back the flow signal to the upper and lower limit voltage comparison circuit 5. Since there are two voltage comparators LM311 in the upper and lower limit voltage comparison circuit 5, the positive input end of one voltage comparator LM311 is connected to the output end of the flow sensor 4, and the negative input end of the other voltage comparator LM311 is connected to the output end of the flow sensor 4, the two Each voltage comparator LM311 can provide the voltage of the upper limit flow signal and the lower limit flow signal respectively. When the flow signal is between the upper limit flow signal and the lower limit flow signal, the upper and lower limit voltage comparison circuit 5 outputs a second comparison signal. At this time, it means that the flow at the outlet end of the valve body 1 is higher than the completely closed flow value, but lower than the normal flow value, which indicates that a leakage occurs in the valve body 1. When the above two conditions are met at the same time, the AND gate circuit 7 responds to the first comparison signal and the second comparison signal at the same time and feeds back the judgment signal to the trigger circuit 8, so that the trigger circuit 8 feeds back a high-level trigger signal to the base of the transistor switch, thereby turning on the collector and emitter of the transistor switch, causing the warning light 10 to light up. In this way, the operation and maintenance personnel of this V-type ball valve can judge whether a leakage occurs based on the lighting condition of the warning light 10.
[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.
Claims
1. A vibration detection V-type ball valve, characterized in that: The invention comprises a valve body (1), a detection circuit, a switch circuit (9), and a prompting member, wherein the detection circuit collects flow and vibration conditions in the valve body (1) and outputs a signal to the switch circuit (9), a controlled end of the switch circuit (9) is coupled to an output end of the detection circuit, the switch circuit (9) is connected in series with the prompting member, and the switch circuit (9) controls the prompting member to be energized in response to the signal from the detection circuit.
2. A vibration detection V-type ball valve according to claim 1, characterized in that: The detection circuit includes a vibration circuit, and the vibration circuit includes A vibration sensor (2), the vibration sensor (2) being arranged on the valve body (1), the detection end of the vibration sensor (2) being in contact with the valve body (1), the vibration sensor (2) collecting vibration conditions of the valve body (1) and feeding back a vibration signal; A first voltage comparison circuit (3) is provided, wherein an input end of the first voltage comparison circuit (3) is coupled to an output end of the vibration sensor (2), and the first voltage comparison circuit (3) outputs a first comparison signal in response to the voltage of the vibration signal being greater than the voltage of a preset vibration reference signal.
3. A vibration detection V-type ball valve according to claim 2, characterized in that: The first voltage comparison circuit (3) comprises a minimum circuit based on a voltage comparator LM339.
4. A vibration detection V-type ball valve according to claim 2, characterized in that: The detection circuit also includes a flow circuit, and the flow circuit includes A flow sensor (4), the flow sensor (4) being arranged on the valve body (1), the detection end of the flow sensor (4) being arranged in the outlet end of the valve body (1), the flow sensor (4) being used to collect the flow in the valve body (1) and output a flow signal; An upper and lower limit voltage comparison circuit (5), wherein the input end of the upper and lower limit voltage comparison circuit (5) is coupled to the output end of the flow sensor (4), and the upper and lower limit voltage comparison circuit (5) feeds back a second comparison signal in response to the voltage of the flow signal being between the voltage of the upper limit flow signal and the voltage of the lower limit flow signal being preset therein; A delay circuit (6) is provided, wherein the input end of the delay circuit (6) is coupled to the output end of the upper and lower limit voltage comparison circuit (5), and the delay circuit (6) starts timing in response to the second comparison signal and outputs a delay signal after the timing ends.
5. A vibration detection V-type ball valve according to claim 4, characterized in that: The upper and lower limit voltage comparison circuit (5) comprises two minimum circuits based on the voltage comparator LM311 and an AND circuit. The input end of the upper and lower limit voltage comparison circuit (5) is connected to the positive input end of one voltage comparator LM311 and the negative input end of another voltage comparator LM311. The two input ends of the AND circuit are respectively coupled to the output ends of the two voltage comparators LM311. The delay circuit (6) comprises an RC delay circuit.
6. A vibration detection V-type ball valve according to claim 4, characterized in that: The detection circuit further comprises an AND gate circuit (7) and a trigger circuit (8), wherein the input end of the AND gate circuit (7) is coupled to the output end of the first voltage comparison circuit (3) and the delay circuit (6) respectively, and the AND gate circuit (7) outputs a judgment signal after responding to the first comparison signal and the delay signal at the same time, and the input end of the trigger circuit (8) is coupled to the output end of the AND gate circuit (7), and the trigger circuit (8) outputs a trigger signal after responding to the judgment signal.
7. A vibration detection V-type ball valve according to claim 6, characterized in that: The trigger circuit (8) comprises an RS trigger.
8. The vibration detection V-type ball valve according to claim 6, characterized in that: The controlled end of the switch circuit (9) is coupled to the output end of the trigger circuit (8), one end of the switch circuit (9) is connected to an electrical device, and the other end of the switch circuit (9) is coupled to a prompting element.
9. The vibration detection V-type ball valve according to claim 8, characterized in that: The switch circuit (9) includes a transistor switch, the base of the transistor switch is coupled to the output end of the trigger circuit (8), the collector of the transistor switch is connected to electricity, the emitter of the transistor switch is connected to a prompt element and then grounded, and the prompt element includes a prompt light (10).