Isolation valve switch monitoring device and novel isolation device

Abstract

The utility model relates to the field of automatic monitoring, in particular to an isolating valve switch monitoring device and a novel isolating device, which comprise a mounting shell, a power supply component, and a protective resistor, an electric signal detection component, a variable resistance component and a monitoring component which are arranged in the mounting shell, the slip sheet is fixed on an isolation valve piston of the to-be-tested isolation valve, and the contact position of the slip sheet and the resistor group is changed according to the movement position of the isolation valve piston; the power supply assembly, the protective resistor and the variable resistance assembly are connected in series to form a detection circuit; the electric signal detection assembly is used for acquiring a detection electric signal in the detection circuit; the monitoring assembly is electrically connected with the electric signal detection assembly. According to the utility model, the on-off state of the piston of the isolating valve is visually represented by detecting electric signals, so that the accuracy of monitoring the on-off state of the isolating valve is improved, the low-cost modification of the existing isolating valve is realized, and the effects of reducing cost and increasing efficiency are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automation monitoring, in particular to a kind of isolation valve switch monitoring device and novel isolation device. BACKGROUND

[0002] Isolation valve is a kind of automation device commonly used in factory, and the structure diagram of current isolation valve can refer to Figure 1 When needing isolation valve to open, compressed gas can be introduced into compressed gas inlet pipe, to push isolation valve piston to move right, so that left molecular pump exhaust pipe is communicated with front-stage pipeline air inlet pipe, to realize opening;When needing isolation valve to close, compressed gas is released, and isolation valve piston is pulled back left under the action of spring, and isolation valve is re-plugged molecular pump exhaust pipe, so that molecular pump exhaust pipe is cut off from front-stage pipeline air inlet pipe, to realize closing.

[0003] At present, for the detection of isolation valve switch, it is mostly judged by the working condition of compressed gas solenoid valve, that is, if compressed gas solenoid valve is opened, the system defaults that compressed gas is currently pressing isolation valve piston, and pushing isolation valve piston to move right, so that isolation valve must be in open state at this time;If compressed gas solenoid valve is closed, the system defaults that compressed gas has been discharged, and there is no compressed gas pressing, so that isolation valve piston should have been pulled back to the leftmost side, so that isolation valve must be in closed state at this time. In other words, in the prior art, only whether compressed gas solenoid valve of on-off isolation valve works can be indirectly judged, and this judgment method does not consider abnormal conditions such as gas leakage or mechanical failure in isolation valve, so that the opening and closing state of isolation valve cannot be correctly displayed when such abnormal conditions occur, which has safety hazard.

[0004] Therefore, how to accurately and effectively monitor the opening and closing state of isolation valve is a problem to be solved by those skilled in the art. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an isolation valve switch monitoring device and novel isolation device, to solve the problem of inaccurate monitoring of the opening and closing state of isolation valve in the prior art and safety hazard.

[0006] To solve the above technical problems, the utility model provides an isolation valve switch monitoring device, which comprises a mounting shell, a power supply assembly, a protection resistor arranged inside the mounting shell, an electric signal detection assembly, a variable resistance assembly and a monitoring assembly.

[0007] The mounting shell comprises a clamping opening, and the mounting shell is fixedly connected to the isolation valve to be detected through the clamping opening.

[0008] The variable resistance assembly comprises a sliding sheet and a resistance group.

[0009] The slide is fixed on the isolation valve piston of the isolation valve to be tested, and changes the contact position with the resistance group according to the movement position of the isolation valve piston, so that the resistance value of the variable resistance component changes;

[0010] The power supply component, the protection resistance and the variable resistance component are connected in series to form a detection circuit.

[0011] The electric signal detection component is used to acquire a detection electric signal in the detection circuit.

[0012] The monitoring component is electrically connected with the electric signal detection component, and is used to monitor the detection electric signal.

[0013] Optionally, in the isolation valve switch monitoring device, the variable resistance component is a slide rheostat.

[0014] Optionally, in the isolation valve switch monitoring device, the electric signal detection component is an ammeter.

[0015] The ammeter is connected in series in the detection circuit.

[0016] Optionally, in the isolation valve switch monitoring device, the electric signal detection component is a voltmeter.

[0017] Optionally, in the isolation valve switch monitoring device, the voltmeter is connected at two ends of the protection resistance.

[0018] Or the voltmeter is connected at two ends of the variable resistance component.

[0019] Optionally, in the isolation valve switch monitoring device, the power supply component is a built-in power supply arranged in the mounting shell.

[0020] Or the power supply component is a power supply interface arranged on the mounting shell, and the power supply interface is used to be connected with an external power supply.

[0021] Optionally, in the isolation valve switch monitoring device, a working switch is further included.

[0022] The working switch is connected in series in the detection circuit, and is used to control the on-off of the detection circuit.

[0023] Optionally, in the isolation valve switch monitoring device, the mounting shell cooperates with the isolation valve piston to form a sealed cavity.

[0024] Optionally, in the isolation valve switch monitoring device, the monitoring component comprises a digital display; the digital display is arranged on the outside of the mounting shell and is electrically connected with the electric signal detection component, and is used for displaying the value of the detection electric signal;

[0025] Optionally, in the isolation valve switch monitoring device, the monitoring component comprises a monitoring processor; the monitoring processor is electrically connected with the electric signal detection component, and is used for judging the switch state of the isolation valve according to the detection electric signal.

[0026] A novel isolation device comprises an isolation valve and the isolation valve switch monitoring device as described in any one of the above.

[0027] The isolation valve switch monitoring device comprises a mounting shell, a power supply component, a protection resistor arranged in the mounting shell, an electric signal detection component, a variable resistance component and a monitoring component; the mounting shell comprises a clamping opening, and the mounting shell is fixedly connected to a to-be-detected isolation valve through the clamping opening; the variable resistance component comprises a sliding sheet and a resistance group; the sliding sheet is fixed to the isolation valve piston of the to-be-detected isolation valve, and the contact position of the sliding sheet with the resistance group is changed according to the movement position of the isolation valve piston, so that the resistance value of the variable resistance component is changed; the power supply component, the protection resistor and the variable resistance component are connected in series to form a detection circuit; the electric signal detection component is used for acquiring a detection electric signal in the detection circuit; and the monitoring component is electrically connected with the electric signal detection component and is used for monitoring the detection electric signal. The power generated by the compressed gas when the isolation valve is switched is used to push the sliding sheet, so that the resistance value of the variable resistance component is changed, and the position information of the isolation valve piston is converted into the detection electric signal in the detection circuit. The on-off state of the isolation valve piston is directly indicated by the detection electric signal, the shortcoming that the internal fault of the isolation valve cannot be reflected in the related art is avoided, the accuracy of the switch state monitoring of the isolation valve is greatly improved, the loss of the compressed gas caused by the additional sliding sheet is very small and can be ignored, the isolation valve switch monitoring device can be directly and tightly sleeved on the shell of the isolation valve through the clamping opening, the low-cost modification of the existing isolation valve is realized, the universality is greatly improved, and the effect of reducing cost and increasing efficiency is achieved. The novel isolation device with the above beneficial effects is also provided. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without any creative effort.

[0029] Figure 1 is a structure schematic view of the isolation valve in the prior art;

[0030] Figure 2 is a structure schematic view of one specific embodiment of the isolation valve switch monitoring device provided by the present application;

[0031] Figure 3 is a structure schematic view of another specific embodiment of the isolation valve switch monitoring device provided by the present application.

[0032] In the figure, it comprises 60 - mounting shell, 10 - power supply assembly, 20 - protection resistor, 40 - electric signal detection assembly, 30 - variable resistance component, 31 - slide, 32 - resistor group, 51 - monitoring processor, 52 - digital display, 61 - fastener, 62 - clamping opening, 70 - working switch. DETAILED DESCRIPTION

[0033] In order to make the person in the art better understand the present application scheme, the present application is further described in detail below in combination with the drawings and specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the present application.

[0034] The core of the present application is to provide an isolation valve switch monitoring device, and a structure schematic view of one specific embodiment thereof is shown in Figure 2 and Figure 3 , which is called specific embodiment one, comprising a mounting shell 60, a power supply assembly 10, a protection resistor 20, an electric signal detection assembly 40, a variable resistance component 30 and a monitoring assembly arranged inside the mounting shell 60.

[0035] The mounting shell 60 comprises a clamping opening 62, and the mounting shell 60 is fixedly connected to the isolation valve to be measured through the clamping opening 62.

[0036] The variable resistance component 30 comprises a slide 31 and a resistor group 32.

[0037] The slide 31 is fixed to the isolation valve piston of the isolation valve to be measured, and changes the contact position with the resistor group 32 according to the movement position of the isolation valve piston, so that the resistance value of the variable resistance component 30 changes.

[0038] The power supply assembly 10, the protection resistor 20 and the variable resistance component 30 are connected in series to form a detection circuit.

[0039] The electric signal detection component 40 is used to acquire a detection electric signal in the detection circuit;

[0040] The monitoring component is electrically connected with the electric signal detection component 40, and is used for monitoring the detection electric signal.

[0041] Please refer to Figure 2 , Figure 2 The structure schematic diagram after the isolation valve switch monitoring device is installed on the to-be-detected isolation valve is shown in

[0042] Specifically, the variable resistance component 30 is a slide rheostat. The slide rheostat has a large adjustable range and high precision, and can accurately determine the specific position of the isolation valve piston, thereby improving the accuracy of the to-be-detected isolation valve switch state monitoring.

[0043] As a specific embodiment, the electric signal detection component 40 is an ammeter.

[0044] The ammeter is connected in series in the detection circuit.

[0045] As shown in Figure 2 , the electric signal detection component 40 is an ammeter connected in series in the detection circuit, and the detection electric signal is a detection current signal. As shown in Figure 2 , with the compressed gas being introduced, the isolation valve piston moves to the right, the resistance of the variable resistance component 30 gradually decreases, and the reading of the ammeter gradually increases. When the reading of the ammeter (that is, the detection current signal) is greater than a preset threshold value, it can be determined that the isolation valve piston is close enough to determine that the isolation valve is opened. Conversely, when the reading of the ammeter is less than the preset threshold value, it can be determined that the isolation valve piston is not close enough to determine that the isolation valve is opened, and the isolation valve is still in a closed state.

[0046] As another specific embodiment, the electric signal detection component 40 is a voltmeter.

[0047] As shown in Figure 3 , the electric signal detection component 40 is a voltmeter connected in parallel in the detection circuit, and the detection electric signal is a detection voltage signal. Of course, the reading of the voltmeter should change with the change of the resistance value of the variable resistance component 30, and the two ends of the voltmeter are specifically connected in the detection circuit. The position can be determined according to the actual situation, and the utility model does not repeat here.

[0048] Further, the voltmeter is connected to both ends of the protection resistor 20.

[0049] Connecting the voltmeter to both ends of the protection resistor 20 can ensure that the voltmeter is always connected in parallel to a stable resistance load, preventing the theoretical variable resistance component 30 from being 0, resulting in a situation where the entire circuit resistance is 0 and the circuit current is too large, thereby protecting the electronic equipment. The protection resistor 20 and the variable resistance component 30 in the detection circuit are connected in series, meaning that a change in the resistance of the variable resistance component 30 will cause a change in the voltage division on the protection resistor 20, so that Figure 3 For example, after the isolation valve is connected to compressed gas, the isolation valve piston moves to the right in the figure, driving the sliding sheet 31 to move to the right, and the resistance of the variable resistance component 30 decreases, and the voltage division on the protection resistor 20 increases. Therefore, when the voltage reading on the voltmeter (i.e., the detection voltage signal) is greater than a predetermined threshold, the isolation valve is in an open state. Conversely, if the voltage reading on the voltmeter is less than the predetermined threshold, the isolation valve is in a closed state. Of course, the connection relationship between the resistance group 32 and the sliding sheet 31 can also be reversed, that is, as the isolation valve piston moves to the right, the resistance of the variable resistance component 30 can also increase. At this time, the judgment standard of the detection electric signal should be reversed, that is, when the voltage reading on the voltmeter is less than the predetermined threshold, the isolation valve is in an open state. Conversely, if the voltage reading on the voltmeter is greater than the predetermined threshold, the isolation valve is in a closed state.

[0050] Of course, "connecting the voltmeter to both ends of XXX" described in the present application refers to connecting the voltmeter in parallel with XXX, and the following will not be described.

[0051] Further, the voltmeter is connected to both ends of the variable resistance component 30.

[0052] In the specific embodiment, the voltmeter is connected in parallel with the variable resistance component 30, which can obtain more accurate resistance changes of the variable resistance component 30, prevent the current from being too large when the resistance of the variable resistance component 30 is 0, and protect the circuit, that is, obtain more accurate position information of the isolation valve piston, improve the judgment accuracy of the switch state of the isolation valve to be detected. Of course, the judgment of the voltmeter reading can refer to the foregoing, and the present application will not be described here.

[0053] As a specific implementation method in the first aspect, the working switch 70 is further included;

[0054] The working switch 70 is connected in series in the detection circuit, and is used for controlling the on-off of the detection circuit.

[0055] By adding the working switch 70, the detection circuit is not always in the on state, and the working switch 70 can be closed only during work, thereby prolonging the service life of the device.

[0056] In addition, the monitoring assembly includes a digital display 52; the digital display 52 is arranged on the outside of the mounting shell 60 and is electrically connected with the electric signal detection assembly 40, and is used for displaying the value of the detection electric signal;

[0057] And / or, the monitoring assembly includes a monitoring processor 51; the monitoring processor 51 is electrically connected with the electric signal detection assembly 40, and is used for judging the on-off state of the isolation valve according to the detection electric signal.

[0058] Two types of the monitoring assembly are given in the specific embodiment, one of which is the digital display 52, which is used for displaying the detection electric signal, so that the staff can know the on-off state of the isolation valve and the position information of the isolation valve piston at any time. Of course, the monitoring processor 51 can also be provided, which judges the on-off state of the isolation valve according to the detection electric signal, thereby further improving the automation degree of the device. The isolation valve on-off monitoring device can be provided with both the digital display 52 and the monitoring processor 51, or only one of the two, Figure 2 、 Figure 3 The structural diagram of the structure provided with both is shown.

[0059] Further, more information can be obtained in combination with the electromagnetic valve for controlling the compressed gas mentioned in the foregoing. For example, if the detection electric signal shows that the isolation valve is “on”, but the electromagnetic valve for controlling the compressed gas shows “off”, it indicates that the isolation valve piston of the isolation valve is in the position of opening the isolation valve, but the compressed gas is not flowing in, so it can be inferred that the isolation valve has internal spring failure or piston jamming, piston inaccurate homing, etc. Abnormalities. If the detection electric signal shows that the isolation valve is “off”, but the electromagnetic valve for controlling the compressed gas shows “on”, it indicates that the isolation valve piston is not opened, but the compressed gas pipeline is continuously flowing, so it can be inferred that the isolation valve has compressed gas leakage or mechanical failure, etc. Abnormalities. The condition of the isolation valve to be tested can be further inferred to assist the staff in decision-making and facilitate subsequent maintenance.

[0060] In addition, the power supply assembly 10 is an internal power supply arranged in the mounting shell; or the power supply assembly 10 is a power supply interface arranged on the mounting shell 60; the power supply interface is used for connecting with an external power supply.

[0061] Two specific embodiments of the power supply assembly 10 are given in the preferred embodiment, that is, the built-in power supply and the power supply interface. The use of the built-in power supply can further improve the integration of the isolation valve switch monitoring device, and is convenient and practical. The use of the power supply interface can further reduce the size of the isolation valve switch monitoring device, and at the same time, avoid the increase in design difficulty caused by the replacement of the built-in power supply. It can be selected according to actual needs. Figure 2 In the power supply assembly 10 is the built-in power supply, Figure 3 In the power supply interface.

[0062] As a preferred embodiment, the mounting shell 60 cooperates with the isolation valve piston to form a sealed chamber.

[0063] After the isolation valve switch monitoring device is added to the isolation valve to be tested in the preferred embodiment, the isolation valve switch monitoring device can still realize sealing of the isolation valve to be tested, can play a sealing protection effect on the lubricating oil at the piston inside the isolation valve to be tested, prolong the use time of the lubricating oil, and thus the service life of the isolation valve to be tested is indirectly improved.

[0064] The utility model provides an isolating valve switch monitoring device, including installation casing 60, power supply component 10 and setting in the protection resistance 20, electric signal detection component 40, variable resistance component 30 and monitoring component of installation casing 60 inside, installation casing 60 includes the clamping opening 62, installation casing 60 is fixedly connected on the isolating valve to be measured through clamping opening 62, variable resistance component 30 includes slide 31 and resistance group 32, slide 31 is fixed on the isolating valve piston of isolating valve to be measured, and according to the movement position change of isolating valve piston and resistance group 32's contact position, makes the resistance value of variable resistance component 30 change, power supply component 10, protection resistance 20 and variable resistance component 30 are connected in series and constitute detection circuit, electric signal detection component 40 is used to obtain the detection electric signal in detection circuit, monitoring component and electric signal detection component 40 are electrically connected, and are used for monitoring detection electric signal, the utility model borrows the power of the compressed gas produced when isolating valve itself switch and pushes slide 31, thereby realizes the change of the resistance value of variable resistance component 30, equivalent to the position information of isolating valve piston is converted for the detection electric signal in detection circuit, and the on-off of isolating valve piston is directly indicated through detection electric signal, avoids the shortcoming that isolating valve internal failure can not be reflected in relevant art, and the accuracy of isolating valve switch state monitoring is greatly improved, and the wear of the additional slide 31 to compressed gas itself is very small, and can be ignored, in addition, the isolating valve switch monitoring device in the utility model can be directly closely covered on the shell of isolating valve through clamping opening 62, realizes the low -cost modification to existing isolating valve, greatly improves the universality, plays the effect of cost reduction and efficiency increase.

[0065] The utility model also provides a novel isolating device, the novel isol isolating valve and switch monitoring device of any one of the above. The isolating valve switch monitoring device provided by the utility model, including installation casing 60, power supply component 10 and setting in the protection resistance 20, electric signal detection component 40, variable resistance component 30 and monitoring component of installation casing 60 inside, the installation casing 60 includes the clamping opening 62, the installation casing 60 is fixedly connected on the isolating valve to be measured through the clamping opening 62, the variable resistance component 30 includes slide 31 and resistance group 32, the slide 31 is fixed on the isolating valve piston of the isolating valve to be measured, and the contact position of resistance group 32 is changed according to the movement position of the isolating valve piston, makes the resistance value of variable resistance component 30 change, the power supply component 10, the protection resistance 20 and the variable resistance component 30 are connected in series and form detection circuit, the electric signal detection component 40 is used to obtain the detection electric signal in the detection circuit, the monitoring component is electrically connected with the electric signal detection component 40, and is used for monitoring the detection electric signal. The utility model uses the power of the compressed gas generated when the isolating valve switch to push the slide 31, thereby realizing the change of the resistance value of variable resistance component 30, which is equivalent to converting the position information of the isolating valve piston into the detection electric signal in the detection circuit. The on-off of the isolating valve piston is directly indicated by the detection electric signal, avoiding the shortcomings that the internal faults of the isolating valve cannot be reflected in the related art, greatly improving the accuracy of the isolating valve switch state monitoring, and the loss of the slide 31 to the compressed gas itself is very small and can be ignored. In addition, the isolating valve switch monitoring device in the utility model can be directly and tightly sleeved on the shell of the isolating valve through the clamping opening 62, realizing the low-cost modification of the existing isolating valve, greatly improving the universality, and playing the effect of reducing cost and increasing benefit.

[0066] The various embodiments are described in a progressive manner in the specification, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the various embodiments can be referred to each other. For the device disclosed by the embodiments, since it corresponds to the method disclosed by the embodiments, the description is relatively simple, and the related parts can be referred to the method part.

[0067] It should be noted that, in the present specification, the relational terms such as first and second and the like merely refer to one entity or action being distinguished from another entity or action, without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0068] The isolation valve switch monitoring device and the novel isolation device are described in detail above. The principles and implementation manners of the present application are described by using specific examples in this paper. The above description of the embodiments is only used to help understand the method and the core idea of the present application. It should be pointed out that, for those skilled in the art, without departing from the principles of the present application, the present application can be improved and modified in many ways. These improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. An isolated valve switch monitoring device, characterized by, The installation shell, a power supply assembly, a protection resistor arranged inside the installation shell, an electric signal detection assembly, a variable resistance assembly and a monitoring assembly are included. The installation shell includes a clamping opening, and the installation shell is fixedly connected to the isolation valve to be detected through the clamping opening. The variable resistance assembly includes a sliding sheet and a resistance group. The sliding sheet is fixed to the isolation valve piston of the isolation valve to be detected, and the contact position of the sliding sheet with the resistance group is changed according to the movement position of the isolation valve piston, so that the resistance value of the variable resistance assembly is changed. The power supply assembly, the protection resistor and the variable resistance assembly are connected in series to form a detection circuit. The electric signal detection assembly is used to obtain a detection electric signal in the detection circuit. The monitoring assembly is electrically connected with the electric signal detection assembly and is used to monitor the detection electric signal.

2. The isolator valve switch monitor apparatus of claim 1, wherein, The variable resistance assembly is a sliding rheostat.

3. The isolator valve switch monitor apparatus of claim 1, wherein, The electric signal detection assembly is an ammeter. The ammeter is connected in series in the detection circuit.

4. The isolator valve switch monitor apparatus of claim 1, wherein, The electric signal detection assembly is a voltmeter.

5. The isolator valve switch monitor apparatus of claim 4, wherein, The voltmeter is connected to both ends of the protection resistor. Or the voltmeter is connected to both ends of the variable resistance assembly.

6. The isolator valve switch monitor apparatus of claim 1, wherein, The power supply assembly is a built-in power supply arranged in the installation shell. Or the power supply assembly is a power supply interface arranged on the installation shell, and the power supply interface is used to be connected with an external power supply.

7. The isolator valve switch monitor apparatus of claim 1, wherein, A working switch is further included. The working switch is connected in series in the detection circuit and is used to control the on-off of the detection circuit.

8. The isolator valve switch monitor apparatus of claim 1, wherein, The installation shell cooperates with the isolation valve piston to form a sealed cavity.

9. The isolating valve switch supervisory device of claim 1, wherein, The monitoring assembly includes a digital display arranged on the outside of the installation shell and electrically connected with the electric signal detection assembly, and is used to display the value of the detection electric signal. And / or, the monitoring assembly includes a monitoring processor electrically connected with the electric signal detection assembly and used to judge the on-off state of the isolation valve according to the detection electric signal.

10. A novel isolating device characterized by, The novel isolation device includes an isolation valve and the isolation valve on-off monitoring device according to any one of claims 1 to 9.

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