Device and method for measuring self-closing force and counter force of vacuum arc-extinguishing chamber
Through the modularly designed vacuum arc extinguishing chamber self-recharge and reaction force measurement device, the problems of poor flexibility and operation difficulties of existing equipment are solved, and flexible and accurate measurement of large-size and large-weight vacuum arc extinguishing chambers are achieved, improving the Measurement efficiency.
Patent Information
- Application Number
- CN202411532827.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2024-12-17
AI Technical Summary
In the prior art, the autility and reaction force measurement equipment of the vacuum arc extinguishing chamber have poor flexibility, making it difficult to adapt to large-sized and large-weight vacuum arc extinguishing chambers for measurement, and operation is difficult.
A modular measuring device including a bracket, a connecting rod, a tension sensor, a power module and a dynamic and static contact separation detection module is designed. It can perform measurements on site, pull the connecting rod through the power module, and read the vacuum arc extinguishing chamber using a tension sensor. The autism and reaction force value of the contact separation detection module is used to detect the contact separation state in real time.
The self-recharge and reaction force measurement of large-size and large-weight vacuum arc extinguishing chambers is realized, which improves the measurement flexibility, accuracy and efficiency, reduces the difficulty of operation, and adapts to the measurement of vacuum arc extinguishing chambers of different sizes and weights. .
Smart Images
Figure CN119147134A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of vacuum interrupter measurement, and in particular relates to a device and a method for measuring the self-closing force and reaction force of a vacuum interrupter. Background Art
[0002] In the field of power equipment manufacturing and maintenance, vacuum interrupters are a key electrical component, and the reliability of their performance is crucial to the safe operation of power systems. During operation, vacuum interrupters need to have good self-closing force and reaction force characteristics to ensure that the circuit can be opened and closed quickly and accurately during the opening and closing operations, while effectively suppressing the generation and continuation of arcs to protect the circuit from damage. Therefore, measuring the self-closing force and reaction force values of vacuum interrupters is an indispensable part of production quality control and on-site maintenance.
[0003] At present, the measurement of the self-closing force and reaction force of the vacuum interrupter depends on special testing equipment. These testing equipment are fixed in the production workshop. The vacuum interrupter needs to be transported to the testing equipment for measurement. It has poor flexibility and is usually only convenient for small-volume vacuum interrupters. It is also difficult to operate large-sized and heavy vacuum interrupters. Summary of the invention
[0004] In view of the problems existing in the prior art, the present invention provides a device and method for measuring the self-closing force and reaction force of a vacuum arc chamber, whose purpose is to achieve flexible measurement of the self-closing force and reaction force of the vacuum arc chamber and meet the self-closing force and reaction force measurement requirements of large-sized and heavy vacuum arc chambers.
[0005] In order to solve the above technical problems, the present invention is implemented by the following technical solutions: According to a first aspect of the present invention, there is provided a device for measuring the self-closing force and reaction force of a vacuum interrupter, comprising: A bracket, which is used to be placed on the upper end of the vacuum interrupter housing; A first connecting rod, the lower end of which is used to be detachably connected to the upper end of the moving conductive rod of the vacuum interrupter; A tension sensor, the lower end of which is detachably connected to the upper end of the first connecting rod; A second connecting rod, the lower end of which is detachably connected to the upper end of the tension sensor; A power module is arranged on the top of the bracket, the upper end of the second connecting rod is connected to the power module, and the power module can pull the second connecting rod to move upward; A moving and static contact separation detection module, one end of which is used to be electrically connected to the moving conductive rod of the vacuum interrupter, and the other end of which is used to be electrically connected to the static conductive rod of the vacuum interrupter. The moving and static contact separation detection module is used to detect the separation state of the moving conductive rod of the vacuum interrupter and the static conductive rod of the vacuum interrupter.
[0006] In a possible implementation manner of the first aspect, the power module is a jack, the jack is detachably arranged on the top of the bracket, and the upper end of the second connecting rod is detachably connected to the piston rod of the jack.
[0007] In a possible implementation of the first aspect, the power module includes a thrust ball bearing and a nut, the thrust ball bearing is fixed to the top of the bracket, the nut is placed on the thrust ball bearing, and the upper end of the second connecting rod is threadedly connected to the nut.
[0008] In a possible implementation manner of the first aspect, an external thread is provided on the first connecting rod near the lower end, and the lower end of the first connecting rod is threadedly connected to the upper end of the moving conductive rod of the vacuum interrupter.
[0009] In a possible implementation manner of the first aspect, a lower end of the tension sensor is threadedly connected to an upper end of the first connecting rod.
[0010] In a possible implementation manner of the first aspect, the lower end of the second connecting rod is threadedly connected to the upper end of the tension sensor.
[0011] In a possible implementation of the first aspect, the moving and static contact separation detection module is an indicator light or an ohmmeter; When the moving conductive rod of the vacuum interrupter is about to separate from the static conductive rod of the vacuum interrupter, the indicator light flashes or the ohmmeter gives an early warning.
[0012] In a possible implementation manner of the first aspect, one end of the moving and static contact separation detection module is electrically connected to the moving conductive rod of the vacuum interrupter through a first wire, and the other end is electrically connected to the static conductive rod of the vacuum interrupter through a second wire.
[0013] In a possible implementation manner of the first aspect, central axes of the first connecting rod, the vacuum interrupter movable conductive rod, and the second connecting rod coincide with each other.
[0014] According to a second aspect of the present invention, a method for measuring the self-closing force and reaction force of a vacuum interrupter is provided, and the self-closing force and reaction force measuring device of a vacuum interrupter is used for measurement. The measuring method comprises: Connecting the lower end of the first connecting rod to the upper end of the moving conductive rod of the vacuum interrupter, electrically connecting one end of the moving and static contact separation detection module to the moving conductive rod of the vacuum interrupter, and electrically connecting the other end to the static conductive rod of the vacuum interrupter; When measuring the self-closing force of the vacuum interrupter, the power module is controlled to pull the second connecting rod upward, and the second connecting rod drives the tension sensor, the first connecting rod and the moving conductive rod of the vacuum interrupter to move upward together. When the moving and static contact separation detection module detects that the moving conductive rod of the vacuum interrupter is about to be separated from the static conductive rod of the vacuum interrupter, the tension value of the tension sensor at this time is read, and the tension value is the self-closing force of the vacuum interrupter; When measuring the reaction force of the vacuum interrupter, the power module is controlled to pull the second connecting rod to move upward. When the distance the second connecting rod moves upward is equal to the rated opening distance of the vacuum interrupter, the tension value of the tension sensor at this time is read, and the tension value is the reaction force of the vacuum interrupter.
[0015] Compared with the prior art, the present invention has at least the following beneficial effects: The present invention provides a self-closing force and reaction force measuring device for a vacuum arc chamber, which adopts a modular design and includes a bracket, a first connecting rod, a tension sensor, a second connecting rod, a power module and a moving and static contact separation detection module component. These components can be easily disassembled and assembled, so that the measuring device can be brought to the site for measurement without transporting the vacuum arc chamber to a fixed test device. It is equipped with a moving and static contact separation detection module, which can detect the separation state of the moving contact and the static contact of the vacuum arc chamber in real time. When it is detected that the contact is about to separate or reaches the rated opening distance, the tension sensor can immediately read and record the corresponding tension value, realizing automatic measurement, improving the accuracy of measurement, and improving the flexibility and efficiency of measurement. In particular, for large-sized and heavy-weight vacuum arc chambers, the present invention can meet the self-closing force and reaction force measurement of large-sized and heavy-weight vacuum arc chambers. In summary, the present invention effectively solves the problems of poor flexibility and difficult operation of existing measuring equipment through technical means such as modular design, strong adaptability, automatic measurement and simplified operation process, and can adapt to vacuum arc chambers of different sizes and weights for measurement, reducing the difficulty of operation.
[0016] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the specific implementation modes of the present invention, the drawings required for use in the description of the specific implementation modes will be briefly introduced below. Obviously, the drawings described below are some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] Figure 1 This is a structural schematic diagram of a self-closing force and reaction force measuring device of a vacuum interrupter in a use state according to an embodiment of the present invention; Figure 2 The present invention is a schematic diagram of the electrical connection between a moving and static contact separation detection module and a moving conductive rod and a static conductive rod of a vacuum interrupter in a device for measuring the self-closing force and reaction force of a vacuum interrupter according to an embodiment of the present invention.
[0019] In the figure: 1- bracket; 2- vacuum arc chamber housing; 3- first connecting rod; 4- dynamic conductive rod of vacuum arc chamber; 5- tension sensor; 6- second connecting rod; 7- power module; 8- dynamic and static contact separation detection module; 9- static conductive rod of vacuum arc chamber; 10- first wire; 11- second wire. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0021] Combination Figure 1 and Figure 2As shown, an embodiment of the present invention provides a device for measuring the self-closing force and reaction force of a vacuum arc chamber, which is mainly intended to solve the problems of poor flexibility and difficult operation of measuring equipment in the prior art, and is particularly suitable for the measurement needs of large-sized and heavy vacuum arc chambers. In this embodiment, a self-closing force and reaction force measuring device of a vacuum arc chamber specifically includes a bracket 1, a first connecting rod 3, a tension sensor 5, a second connecting rod 6, a power module 7 and a moving-static contact separation detection module 8. The bracket 1 is used to be placed on the upper end of the vacuum arc chamber shell 2; the lower end of the first connecting rod 3 is used to be detachably connected to the upper end of the moving conductive rod 4 of the vacuum arc chamber; the lower end of the tension sensor 5 is detachably connected to the upper end of the first connecting rod 3; the lower end of the second connecting rod 6 is detachably connected to the upper end of the tension sensor 5; the power module 7 is arranged on the top of the bracket 1, and the upper end of the second connecting rod 6 is connected to the power module 7, and the power module 7 can pull the second connecting rod 6 to move upward; one end of the moving-static contact separation detection module is used to be electrically connected to the moving conductive rod 4 of the vacuum arc chamber, and the other end is used to be electrically connected to the static conductive rod 9 of the vacuum arc chamber, and the moving-static contact separation detection module 8 is used to detect the separation state of the moving conductive rod 4 of the vacuum arc chamber and the static conductive rod 9 of the vacuum arc chamber.
[0022] Specifically, the bracket 1 is designed as a stable structure to ensure that the upper end of the vacuum interrupter housing 2 can be stably supported to prevent shaking or displacement during the measurement process. Exemplarily, the bracket 1 is composed of two support plates arranged opposite to each other and a plurality of support rods connected between the two support plates, and a through hole is opened at the center of the two support plates. The lower end of the first connecting rod 3 is designed as an interface matching the upper end of the moving conductive rod 4 of the vacuum interrupter, such as a threaded connection, to ensure a firm connection and easy disassembly. It should be understood that the upper end of the moving conductive rod 4 of the vacuum interrupter itself has an internal threaded hole. It should be noted that the length and material of the first connecting rod 3 are optimized according to the size and weight of the vacuum interrupter to ensure sufficient strength and rigidity. The lower end of the tension sensor 5 is connected to the upper end of the first connecting rod 3 by a detachable connector (such as a threaded joint, a flange, etc.) to ensure the accuracy of the measurement data. The design of the second connecting rod 6 needs to consider the compatibility with the power module 7, and its upper end is designed as an interface matching the output shaft of the power module 7, such as a keyway connection, a flange connection, a threaded connection, etc. The length and diameter of the second connecting rod 6 are adjusted according to the output characteristics of the power module 7 and the measurement requirements to ensure that the pulling force can be transmitted smoothly and continuously during the measurement process. The power module 7 can be driven by electric, pneumatic or hydraulic means, and has the ability to control the size and speed of the pulling force. The bottom of the power module 7 is fixed to the top of the bracket 1 to ensure stability during the measurement process. One end of the moving and static contact separation detection module 8 is electrically connected to the moving conductive rod 4 of the vacuum arc chamber through a wire, and the other end is electrically connected to the static conductive rod 9 of the vacuum arc chamber. When the moving conductive rod 4 is separated from the static conductive rod 9, the moving and static contact separation detection module 8 can send a separation signal to trigger the reading and recording of the pulling force value.
[0023] In this embodiment, when the self-closing force and reaction force measuring device of the vacuum arc chamber is used to measure the self-closing force and reaction force, the specific steps are as follows: the vacuum arc chamber housing 2 is placed on the bracket 1 to ensure stability without shaking. The lower end of the first connecting rod 3 is connected to the upper end of the moving conductive rod 4 of the vacuum arc chamber to ensure a firm connection. One end of the moving and static contact separation detection module 8 is electrically connected to the moving conductive rod 4 of the vacuum arc chamber, and the other end is electrically connected to the static conductive rod 9 of the vacuum arc chamber to ensure smooth circuit.
[0024] The self-closing force is measured by starting the power module 7 and controlling it to pull the second connecting rod 6 upward. As the second connecting rod 6 rises, the tension sensor 5 starts to record the tension value. When the moving and static contact separation detection module 8 detects that the moving conductive rod 4 and the static conductive rod 9 are about to separate, the tension value of the tension sensor 5 at this time is immediately read and recorded, and this value is the self-closing force of the vacuum interrupter.
[0025] Measuring the reaction force is specifically as follows: after completing the self-closing force measurement, continue to control the power module 7 to pull the second connecting rod 6 upward until the distance the second connecting rod 6 moves upward is equal to the rated opening distance of the vacuum interrupter. During this process, the tension sensor 5 continuously records the tension value. When the rated opening distance is reached, read and record the tension value of the tension sensor 5 at this time, which is the reaction force of the vacuum interrupter.
[0026] For example, the measured self-closing force and reaction force values can also be input into a data processing unit (such as a computer, a data recorder, etc.) for data analysis, storage, and report printing. Based on the measurement results, the performance status of the vacuum interrupter can be evaluated to provide a basis for production quality control and on-site maintenance.
[0027] It should be understood that the signal output end of the tension sensor 5 is connected to a data processing unit (not shown in the figure) for real-time display and recording of the tension value.
[0028] This embodiment provides a flexible, accurate and easy-to-operate device for measuring the self-closing force and reaction force of a vacuum interrupter, which is particularly suitable for measuring large-sized and heavy vacuum interrupters and effectively improves the measurement efficiency.
[0029] In one possible implementation, Figure 1 As shown, the power module 7 is a jack, which is detachably arranged on the top of the bracket 1, and the upper end of the second connecting rod 6 is detachably connected to the piston rod of the jack.
[0030] That is to say, the power module 7 is designed as a jack in this embodiment. The jack is a mechanical device with a compact structure that can provide stable and controllable thrust. The selection of the jack is based on its high reliability and easy control characteristics, and is very suitable for measuring the self-closing force and reaction force of the vacuum interrupter. In this embodiment, the jack is designed to be detachably arranged on the top of the bracket 1, that is, the jack can be connected to the bracket 1 through a quick connector (such as a bolt, a buckle, etc.), so that it is easy to disassemble and reinstall when needed, which not only improves the flexibility of the measuring device, but also allows the jack to be reused in different measurement scenarios, reducing costs. At the same time, because the jack itself is heavy, designing it as a detachable component can reduce the overall moving weight of the measuring device. During the measurement process, the jack is fixed on the bracket 1 and does not need to be moved; when the measuring device needs to be moved, the jack can be disassembled to make the entire device lighter. The piston rod of the jack is connected to the upper end of the second connecting rod 6 by a detachable connector, which can be threaded, ensuring that the connection is firm and easy to disassemble.
[0031] In one implementation, the power module 7 may include a thrust ball bearing and a nut, wherein the thrust ball bearing is fixed to the top of the bracket 1, the nut is placed on the thrust ball bearing, and the upper end of the second connecting rod 6 is threadedly connected to the nut.
[0032] Specifically, the power module 7 in this embodiment includes a thrust ball bearing and a nut. The thrust ball bearing is fixed to the top of the bracket 1. For example, it can be achieved by welding, bolting or other forms of mechanical connection to ensure that the thrust ball bearing will not be displaced or shaken during the measurement process. The upper end of the second connecting rod 6 is designed to be a thread matching the nut, and the second connecting rod 6 is fixed to the nut by a threaded connection. During the measurement process, the nut is driven to rotate by an external rotating device (such as a manual rotating handle, an electric rotator, etc.). Since the nut is threadedly connected to the second connecting rod 6, the rotation of the nut is converted into a linear motion of the second connecting rod 6, thereby realizing the application of tension to the moving conductive rod of the vacuum arc chamber.
[0033] This embodiment adopts the power module 7 including the thrust ball bearing and the nut, which not only realizes the stable application of pulling force to the moving conductive rod of the vacuum interrupter, but also reduces the weight of the power module 7, thereby reducing the weight of the entire measuring device.
[0034] In one possible implementation, an external thread is provided near the lower end of the first connecting rod 3 , and the lower end of the first connecting rod 3 is threadedly connected to the upper end of the moving conductive rod 4 of the vacuum interrupter.
[0035] It should be understood that the upper end of the moving conductive rod 4 of the vacuum arc chamber itself has an internal thread. That is to say, the position near the lower end of the first connecting rod 3 is designed to have an external thread that matches the internal thread. This design allows the first connecting rod 3 to be tightly connected to the upper end of the moving conductive rod 4 of the vacuum arc chamber through a threaded connection. When the lower end of the first connecting rod 3 is in contact with the upper end of the moving conductive rod 4 of the vacuum arc chamber, it can be threadedly connected to the moving conductive rod 4 of the vacuum arc chamber by rotating the first connecting rod 3. The threaded connection can provide a firm connection to ensure that there will be no relative displacement or loosening between the first connecting rod 3 and the moving conductive rod 4 of the vacuum arc chamber during the measurement process. The threaded connection allows for quick disassembly and reinstallation by rotating the first connecting rod 3 when necessary, thereby improving the flexibility of the measuring device.
[0036] In this embodiment, by providing an external thread near the lower end of the first connecting rod 3 and threadedly connecting it to the upper end of the moving conductive rod 4 of the vacuum arc chamber, not only a firm connection between the measuring device and the moving conductive rod of the vacuum arc chamber is achieved, but also the flexibility of the measuring device is improved.
[0037] In one achievable manner, the lower end of the tension sensor 5 is threadedly connected to the upper end of the first connecting rod 3. Specifically, the tension sensor 5 is a core component in the measuring device, and is used to measure the self-closing force and reaction force generated by the vacuum arc chamber during the self-closing and separation processes. In order to achieve a firm and flexible connection with the first connecting rod 3, the lower end of the tension sensor 5 is designed to have an internal thread. The first connecting rod 3 serves as a key component for connecting the moving conductive rod 4 of the vacuum arc chamber with the measuring device, and its upper end is designed to have an external thread that matches the internal thread of the tension sensor 5. When the lower end of the tension sensor 5 contacts the upper end of the first connecting rod 3, it can be threadedly connected to the tension sensor 5 by rotating the first connecting rod 3 or the tension sensor 5.
[0038] Similarly, the threaded connection can provide a firm connection, ensuring that there is no relative displacement or loosening between the tension sensor 5 and the first connecting rod 3 during the measurement process, thereby ensuring the accuracy of the measurement result. The threaded connection allows for removal and reinstallation by rotating the first connecting rod 3 or the tension sensor 5 when necessary, which improves the flexibility of the measuring device and facilitates maintenance and replacement of components. Due to the tightness of the threaded connection, the measurement error caused by loose connection can be minimized to ensure the accuracy of the measurement result.
[0039] In one implementation, the lower end of the second connecting rod 6 is threadedly connected to the upper end of the tension sensor 5. Specifically, the second connecting rod 6 is a key component for connecting the power module 7 and the tension sensor 5, and its lower end is designed to have an external thread, and the upper end of the tension sensor 5 is designed to have an internal thread matching the external thread of the second connecting rod 6. When the lower end of the second connecting rod 6 contacts the upper end of the tension sensor 5, the second connecting rod 6 can be threadedly connected to the tension sensor 5 by rotating it. The second connecting rod 6 is tightly connected to the upper end of the tension sensor 5 through a threaded connection, ensuring that the tension can be stably transmitted during the measurement process.
[0040] In one implementation, the moving and static contact separation detection module 8 is an indicator light or an ohmmeter. That is, the moving and static contact separation detection module 8 is designed as an indicator light or an ohmmeter to detect whether the moving contact and the static contact of the vacuum interrupter are separated.
[0041] Specifically, when the indicator light type is selected, its working principle is that when the moving contact is separated from the stationary contact, the current in the circuit will change, thereby triggering the indicator light to flash. This intuitive visual feedback allows the operator to quickly determine whether the contacts are separated. When the ohmmeter type is selected, its working principle is to measure the resistance value in the circuit. When the moving contact is separated from the stationary contact, the resistance value in the circuit will change, and the ohmmeter will issue an alarm signal (such as a beep or display a specific value) to indicate the contact separation status.
[0042] Start the power module 7, start to apply tension, and observe the indication of the moving contact and static contact separation detection module 8. When the indicator light starts to flash or the ohmmeter sends an alarm signal, it means that the moving contact and the static contact have been separated. At this time, immediately read the value displayed by the tension sensor 5, which is the self-closing force of the vacuum interrupter.
[0043] This embodiment uses an indicator light or an ohmmeter as the moving and static contact separation detection module 8 to achieve an intuitive indication of the contact separation state.
[0044] In one possible implementation, Figure 1 and Figure 2As shown, one end of the moving and static contact separation detection module 8 is electrically connected to the moving conductive rod 4 of the vacuum interrupter through the first wire 10, and the other end is electrically connected to the static conductive rod 9 of the vacuum interrupter through the second wire 11. The first wire 10 and the second wire 11 serve as conductive media. The first wire 10 connects the moving and static contact separation detection module 8 to the moving conductive rod 4 of the vacuum interrupter, and the second wire 11 connects the moving and static contact separation detection module 8 to the static conductive rod 9 of the vacuum interrupter. This connection method ensures that when the moving contact is separated from the static contact, the current in the circuit will change, thereby triggering the indication function of the moving and static contact separation detection module 8. The moving and static contact separation detection module 8 is designed to detect the current change in the circuit. When the moving contact and the static contact of the vacuum interrupter are in contact, the circuit is in a closed state and the current can pass stably. When the moving contact is separated from the static contact, the current in the circuit will change (such as a sudden interruption or reduction of the current), and this change will be captured by the moving and static contact separation detection module 8. When a current change is detected, the moving and static contact separation detection module 8 will send out an indication signal.
[0045] In one achievable manner, the central axes of the first connecting rod 3, the vacuum interrupter movable conductive rod 4 and the second connecting rod 6 coincide with each other, thereby ensuring the stability of the force transmission chain and reducing the measurement error caused by the relative movement or misalignment between the components.
[0046] The embodiment of the present invention provides a method for measuring the self-closing force and reaction force of a vacuum interrupter, which is measured by using the above-mentioned device for measuring the self-closing force and reaction force of a vacuum interrupter. The specific measurement method is as follows: The bracket 1 is firmly placed on the upper end of the vacuum interrupter housing 2, the lower end of the first connecting rod 3 is connected to the upper end of the vacuum interrupter moving conductive rod 4 by threading, the lower end of the tension sensor 5 is connected to the upper end of the first connecting rod 3 by threading, the lower end of the second connecting rod 6 is connected to the upper end of the tension sensor 5 by threading, the power module 7 is set on the top of the bracket 1, and the upper end of the second connecting rod 6 is connected to the piston rod or nut of the power module 7. Use the first wire 10 to electrically connect one end of the moving and static contact separation detection module 8 to the moving conductive rod 4 of the vacuum interrupter, and use the second wire 11 to electrically connect the other end of the moving and static contact separation detection module 8 to the static conductive rod 9 of the vacuum interrupter.
[0047] The control power module 7 starts to work, gradually pulling the second connecting rod 6 upward. When the indicator light starts to flash or the ohmmeter sends an alarm signal, it means that the moving contact and the static contact of the vacuum interrupter are about to separate. At the moment when the moving and static contacts are about to separate, read the tension value displayed by the tension sensor 5. The tension value is the self-closing force of the vacuum interrupter, and the read self-closing force value is recorded for subsequent analysis and evaluation.
[0048] After measuring the self-closing force, continue to control the power module 7 to pull the second connecting rod 6 upward until the distance the second connecting rod 6 moves upward is equal to the rated opening distance of the vacuum interrupter. When the second connecting rod 6 reaches the rated opening distance, read the tension value displayed by the tension sensor 5, which is the reaction force of the vacuum interrupter, and record the read reaction force value for subsequent analysis and evaluation.
[0049] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element 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.
[0050] In addition, 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 the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0051] In the present invention, unless otherwise clearly specified and limited, the terms "connected", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0052] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0053] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0054] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.
Claims
1. A device for measuring the self-closing force and reaction force of a vacuum interrupter, characterized in that: include: A bracket (1) used for being placed on the upper end of a vacuum interrupter housing (2); A first connecting rod (3), the lower end of which is used to be detachably connected to the upper end of a moving conductive rod (4) of the vacuum interrupter; A tension sensor (5), the lower end of which is detachably connected to the upper end of the first connecting rod (3); a second connecting rod (6), the lower end of which is detachably connected to the upper end of the tension sensor (5); A power module (7) is arranged on the top of the bracket (1), the upper end of the second connecting rod (6) is connected to the power module (7), and the power module (7) is capable of pulling the second connecting rod (6) to move upward; A moving and static contact separation detection module (8), one end of which is used to be electrically connected to a moving conductive rod (4) of a vacuum interrupter, and the other end of which is used to be electrically connected to a static conductive rod (9) of the vacuum interrupter. The moving and static contact separation detection module (8) is used to detect the separation state of the moving conductive rod (4) of the vacuum interrupter and the static conductive rod (9) of the vacuum interrupter.
2. A device for measuring the self-closing force and reaction force of a vacuum interrupter according to claim 1, characterized in that: The power module (7) is a jack, which is detachably arranged on the top of the bracket (1), and the upper end of the second connecting rod (6) is detachably connected to the piston rod of the jack.
3. The device for measuring the self-closing force and reaction force of a vacuum interrupter according to claim 1, characterized in that: The power module (7) comprises a thrust ball bearing and a nut, wherein the thrust ball bearing is fixed to the top of the bracket (1), the nut is placed on the thrust ball bearing, and the upper end of the second connecting rod (6) is threadedly connected to the nut.
4. The device for measuring the self-closing force and reaction force of a vacuum interrupter according to claim 1, characterized in that: An external thread is provided on the first connecting rod (3) near the lower end, and the lower end of the first connecting rod (3) is threadedly connected to the upper end of the moving conductive rod (4) of the vacuum interrupter.
5. The device for measuring the self-closing force and reaction force of a vacuum interrupter according to claim 1, characterized in that: The lower end of the tension sensor (5) is threadedly connected to the upper end of the first connecting rod (3).
6. The device for measuring the self-closing force and reaction force of a vacuum interrupter according to claim 1, characterized in that: The lower end of the second connecting rod (6) is threadedly connected to the upper end of the tension sensor (5).
7. The device for measuring the self-closing force and reaction force of a vacuum interrupter according to claim 1, characterized in that: The moving and static contact separation detection module (8) is an indicator light or an ohmmeter; When the vacuum interrupter movable conductive rod (4) and the vacuum interrupter static conductive rod (9) are about to separate, the indicator light flashes or the ohmmeter gives an early warning.
8. The device for measuring the self-closing force and reaction force of a vacuum interrupter according to claim 1, characterized in that: One end of the moving and static contact separation detection module (8) is electrically connected to the moving conductive rod (4) of the vacuum interrupter via a first conductive wire (10), and the other end is electrically connected to the static conductive rod (9) of the vacuum interrupter via a second conductive wire (11).
9. The device for measuring the self-closing force and reaction force of a vacuum interrupter according to claim 1, characterized in that: The central axes of the first connecting rod (3), the vacuum interrupter movable conductive rod (4) and the second connecting rod (6) coincide with each other.
10. A method for measuring the self-closing force and reaction force of a vacuum interrupter, characterized in that: The self-closing force and reaction force measuring device of a vacuum interrupter according to any one of claims 1 to 9 is used for measurement, and the measuring method comprises: The lower end of the first connecting rod (3) is connected to the upper end of the moving conductive rod (4) of the vacuum interrupter, one end of the moving and static contact separation detection module (8) is electrically connected to the moving conductive rod (4) of the vacuum interrupter, and the other end is electrically connected to the static conductive rod (9) of the vacuum interrupter; When measuring the self-closing force of the vacuum interrupter, the power module (7) is controlled to pull the second connecting rod (6) to move upward, and the second connecting rod (6) drives the tension sensor (5), the first connecting rod (3) and the moving conductive rod (4) of the vacuum interrupter to move upward together. When the moving and static contact separation detection module (8) detects that the moving conductive rod (4) of the vacuum interrupter is about to separate from the static conductive rod (9) of the vacuum interrupter, the tension value of the tension sensor (5) at this time is read, and the tension value is the self-closing force of the vacuum interrupter; When measuring the reaction force of the vacuum interrupter, the power module (7) is controlled to pull the second connecting rod (6) to move upwards. When the distance of the upward movement of the second connecting rod (6) is equal to the rated opening distance of the vacuum interrupter, the tension value of the tension sensor (5) at this time is read. The tension value is the reaction force of the vacuum interrupter.