Isolating switch and isolating switch state detection method

Abstract

The present invention relates to the technical field of isolating switch state detection, and specifically discloses an isolating switch and an isolating switch state detection method, wherein the isolating switch comprises a conductive plate, a fixed plate and a bracket, wherein one end of the conductive plate is hinged with the bracket, and the other end is provided with a moving contact, the fixed plate is fixed to the bracket and one end is provided with a static contact, and the moving contact and the static contact have a mutually engaged connection state and a mutually separated separation state; further comprising a position detection module and a controller, wherein the position detection module comprises a light source panel and a photosensitive panel which are mutually parallel and spaced, the conductive plate and the fixed plate are arranged between the light source panel and the photosensitive panel, the plane swept by the conductive plate is parallel to the light source panel and the photosensitive panel at the same time, the light source panel emits parallel light to the photosensitive panel, and the photosensitive panel identifies the parallel light irradiated thereon; and the controller is connected to the light source panel and the photosensitive panel respectively. This solves the problem that the state of the isolating knife switch cannot be timely known when the isolating switch is in abnormal connection.

Description

Technical Field

[0001] The present invention relates to the technical field of isolating switch state detection, and in particular to an isolating switch and an isolating switch state detection method. Background Art

[0002] The isolating knife switch is a kind of primary power equipment widely used in the power distribution system. It is used to open and close the circuit. Its working principle is simple, flexible and reliable. It is used in large quantities. It plays the role of isolating the voltage in the circuit to ensure the safety of maintenance and construction. Before repairing a certain device or a part of the circuit, first cut off the isolating switches on both sides of the device or the circuit to isolate the voltage on both sides, so that there is an obvious disconnection point in the circuit, and then install a grounding wire on the power-off maintenance equipment or part of the circuit to ensure the safety of the maintenance work.

[0003] However, under the influence of long-term use and external environmental factors, the isolation knife switch may not be closed properly due to rust, sticking, unqualified maintenance and debugging, or during the opening and closing process, the motor may operate correctly and the auxiliary contacts may be in place, but the operating knife switch may not be fully in place due to the isolation knife switch itself, which can easily cause misoperation accidents. Summary of the invention

[0004] The purpose of the present invention is to provide an isolating switch and an isolating switch state detection method to solve the problem in the related art that the state of the isolating switch cannot be known in time.

[0005] On the one hand, the present invention provides an isolating switch, which includes a conductive plate, a fixed plate and a bracket, wherein one end of the conductive plate is hinged to the bracket and the other end is provided with a moving contact, the fixed plate is fixed to the bracket and one end is provided with a stationary contact, and the moving contact and the stationary contact have a mutually clamped connection state and a mutually separated separation state;

[0006] Also includes:

[0007] The position detection module comprises a light source panel and a photosensitive panel which are arranged parallel to each other and at intervals, the conductive plate and the fixing plate are arranged between the light source panel and the photosensitive panel, the plane swept by the conductive plate is parallel to the light source panel and the photosensitive panel at the same time, the light source panel emits parallel light to the photosensitive panel, and the photosensitive panel recognizes the parallel light irradiated thereon;

[0008] A controller is connected to the light source panel and the photosensitive panel respectively.

[0009] As a preferred technical solution for the isolating switch, the parallel light is perpendicular to the photosensitive panel.

[0010] As a preferred technical solution of the isolating switch, it also includes a force detection module, which detects the interaction force between the moving contact and the static contact.

[0011] As an optimal technical solution for the isolating switch, the force detection module includes a spring and a detection part, one end of the spring is fixedly connected to the bracket, and when the moving contact and the static contact are in the connected state, the other end of the spring is pressed against the conductive plate, and the spring is in a compressed state.

[0012] As a preferred technical solution of the isolating switch, the moving contact and the static contact have one clamping plate and the other is a U-shaped clamping groove, and the clamping plate is clamped with the clamping groove.

[0013] As a preferred technical solution for the isolating switch, it also includes a camera module, which is connected to the controller and takes pictures of the conductive plate, the fixing plate and the bracket.

[0014] As a preferred technical solution for the isolating switch, it also includes a wireless data transmission module, and the wireless data transmission module is connected to the controller.

[0015] As a preferred technical solution of the isolating switch, a temperature monitoring module is also included, and the temperature monitoring module is used to detect the temperature at the moving contact and the static contact.

[0016] As a preferred technical solution for the isolating switch, it also includes a red and green indicator light, which is connected to the controller.

[0017] On the other hand, the present invention provides a method for detecting the state of an isolating switch, which is implemented based on the isolating switch in any of the above solutions, and includes:

[0018] S1: Obtain the position information of the moving contact and the stationary contact;

[0019] S2: Determine whether it is in a connected state; if so, execute S3, if not, output S8;

[0020] S3: Detect the force between the moving contact and the static contact;

[0021] S4: If the interaction force is greater than the set minimum interaction force, if so, execute S5, if not, output S8;

[0022] S5: monitor the temperature between the moving contact and the stationary contact;

[0023] S6: The temperature and the set value are within the error range. If so, output S7, if not, output S8;

[0024] S7: The static contact and the moving contact are connected normally;

[0025] S8: The static contact and the moving contact are abnormally connected.

[0026] The beneficial effects of the present invention are:

[0027] The present invention provides an isolating switch, which includes a conductive plate, a fixed plate and a bracket, wherein one end of the conductive plate is hinged with the bracket and the other end is provided with a moving contact, the fixed plate is fixed to the bracket and one end is provided with a static contact, the moving contact and the static contact have a mutually engaged connection state and a mutually separated separation state; further includes a position detection module and a controller, the position detection module includes a light source panel and a photosensitive panel which are parallel to each other and spaced apart, the conductive plate and the fixed plate are arranged between the light source panel and the photosensitive panel, the plane swept by the conductive plate is parallel to the light source panel and the photosensitive panel at the same time, the light source panel emits parallel light to the photosensitive panel, and the photosensitive panel recognizes the parallel light irradiated thereon; the controller is connected to the light source panel and the photosensitive panel respectively. The light source panel emits parallel light to irradiate the photosensitive panel, and since the conductive plate and the fixed plate are located between the light source panel and the photosensitive panel, the conductive plate and the fixed plate will shield part of the parallel light emitted from the light source panel to the photosensitive panel, and then the controller can determine the relative position of the conductive plate and the fixed plate according to the parallel light received by the photosensitive panel. When the moving contact and the fixed contact approach the connection state from the separation state, the controller will determine the relative position information of the moving contact and the fixed contact based on the parallel light received by the photosensitive panel, and then determine whether the moving contact and the fixed contact are in a normal connection position. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the isolating switch in an embodiment of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the movable contact and the stationary contact in the separated state in an embodiment of the present invention;

[0030] Figure 3 It is a structural schematic diagram of the connection state of the moving contact and the stationary contact in an embodiment of the present invention;

[0031] Figure 4 The figure is a flow chart of a method for detecting the state of an isolating switch in an embodiment of the present invention.

[0032] In the figure:

[0033] 1. Conductive plate; 11. Moving contact;

[0034] 2. Fixed plate; 21. Static contact;

[0035] 31. Light source panel; 32. Photosensitive panel; 33. Force detection module; 331. Spring; 332. Detection unit. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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.

[0037] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are 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 limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0040] like Figures 1 to 3As shown, this embodiment provides an isolating switch, which includes a conductive plate 1, a fixed plate 2 and a bracket, wherein one end of the conductive plate 1 is hinged to the bracket and the other end is provided with a moving contact 11, the fixed plate 2 is fixed to the bracket and one end is provided with a static contact 21, the moving contact 11 and the static contact 21 have a mutually clamped connection state and a mutually separated separation state; it also includes a position detection module and a controller, the position detection module includes a light source panel 31 and a photosensitive panel 32 which are parallel to each other and spaced apart, the conductive plate 1 and the fixed plate 2 are arranged between the light source panel 31 and the photosensitive panel 32, the plane scanned by the conductive plate 1 is parallel to the light source panel 31 and the photosensitive panel 32 at the same time, the light source panel 31 emits parallel light to the photosensitive panel 32, and the photosensitive panel 32 recognizes the parallel light irradiated thereon; the controller is respectively connected to the light source panel 31 and the photosensitive panel 32. The light source panel 31 emits parallel light to illuminate the photosensitive panel 32. Since the conductive plate 1 and the fixed plate 2 are located between the light source panel 31 and the photosensitive panel 32, the conductive plate 1 and the fixed plate 2 will shield part of the parallel light emitted from the light source panel 31 to the photosensitive panel 32, and then the controller can determine the relative position of the conductive plate 1 and the fixed plate 2 according to the parallel light received by the photosensitive panel 32. When the moving contact 11 and the stationary contact 21 approach from the separated state to the connected state, the controller will determine the relative position information of the moving contact 11 and the fixed contact according to the parallel light received by the photosensitive panel 32, and then it can be determined whether the moving contact 11 and the fixed contact are in a normal connection position.

[0041] Optionally, the parallel light is perpendicular to the photosensitive panel 32. In this embodiment, the parallel light is perpendicular to the photosensitive panel 32 so that the true outlines of the conductive plate 1 and the fixed plate 2 can be projected on the photosensitive panel 32, thereby improving the accuracy of the controller in determining the relative positions of the conductive plate 1 and the fixed plate 2.

[0042] As for the specific structure of the light source panel 31, in this embodiment, the light source panel 31 includes a light absorbing plate and a plurality of linear light sources, the plurality of linear light sources are fixed on the light absorbing plate in a matrix form, and the light emitted by the plurality of linear light sources is parallel to each other and perpendicular to the photosensitive panel 32. The purpose of using the light absorbing plate is to prevent the light irradiated on the light source panel 31 from being reflected on the photosensitive panel 32.

[0043] Optionally, a force detection module 33 is further included, and the force detection module 33 detects the interaction force between the moving contact 11 and the stationary contact 21. In this embodiment, when the moving contact 11 and the stationary contact 21 are in a connected state, the moving contact 11 and the stationary contact 21 will press against each other, and then there is an interaction force between the moving contact 11 and the stationary contact 21. Therefore, if the force detection module 33 detects that there is no interaction force between the moving contact 11 and the stationary contact 21 or the interaction force is less than the set minimum interaction force, the moving contact 11 and the stationary contact 21 are abnormally connected.

[0044] Regarding the composition of the force detection module 33, optionally, the force detection module 33 includes a spring 331 and a detection part 332, one end of the spring 331 is fixedly connected to the bracket, and when the moving contact 11 and the static contact 21 are in a connected state, the other end of the spring 331 is pressed against the conductive plate 1 and the spring 331 is in a compressed state. In this embodiment, in order to ensure normal connection between the static contact 21 and the moving contact 11, it is required that the interaction force between the static contact 21 and the moving contact 11 shall not be less than a, and further, in order to prevent the elastic force of the spring 331 from causing the moving contact 11 and the static contact 21 to change from a mutually engaged connection state to a mutually separated separation state, in this embodiment, the elastic force of the spring 331 is less than the sum of the gravity of the conductive plate 1 and a. The specific value of a is between 1N-10N, and specifically, the value of a is related to the scenario to which the isolating switch is applicable.

[0045] Optionally, one of the moving contact 11 and the stationary contact 21 is a card plate, and the other is a U-shaped card slot, and the card plate is carded with the card slot. In this embodiment, the moving contact 11 is a card plate, and the stationary contact 21 is a card slot. When the card plate is carded with the card slot, the conductive plate 1 and the fixed plate 2 are electrically connected.

[0046] Optionally, a wireless data transmission module is further included, and the wireless data transmission module is connected to the controller. In this embodiment, the controller transmits the collected data to the background control terminal through the wireless data transmission module, thereby eliminating the need for on-site detection by staff.

[0047] Optionally, a camera module is further included, and the camera module photographs the conductive plate 1, the fixed plate 2 and the bracket. In this embodiment, when the controller detects that the moving contact 11 and the static contact 21 are abnormally connected, the controller controls the camera module to start. The camera module monitors the conductive plate 1, the fixed plate 2 and the bracket, and then the staff can understand the reason for the abnormal connection between the moving contact 11 and the static contact 21 based on the information photographed by the camera.

[0048] Optionally, a temperature monitoring module is further included, and the temperature monitoring module is used to detect the temperature at the moving contact 11 and the static contact 21. In this embodiment, when a virtual connection occurs between the moving contact 11 and the static contact 21, the current between the moving contact and the static contact will increase, thereby causing an increase in heat and even causing a fire. In this embodiment, the temperature monitoring module can monitor the temperature between the moving contact 11 and the static contact 21, and upload the monitored temperature to the background through the controller. When the temperature exceeds the preset value, the background will remind the staff to perform maintenance.

[0049] Optionally, the temperature monitoring module is an infrared thermal detector or a thermistor.

[0050] Optionally, a red and green indicator light is further included, and the red and green indicator light is connected to the controller. In this embodiment, when the moving contact 11 and the stationary contact 21 are normally connected, the red and green indicator light displays a green light; when the moving contact 11 and the stationary contact 21 are abnormally connected, the red and green indicator light displays a red light.

[0051] like Figure 4 As shown, the present invention provides a method for detecting the state of an isolating switch, which is implemented based on the isolating switch in the above scheme, and includes:

[0052] S1: Acquire the position information of the moving contact 11 and the stationary contact 21 .

[0053] In this step, the light source panel 31 emits parallel light to illuminate the photosensitive panel 32. Since the conductive plate 1 and the fixed plate 2 are located between the light source panel 31 and the photosensitive panel 32, the conductive plate 1 and the fixed plate 2 will block part of the parallel light emitted from the light source panel 31 to the photosensitive panel 32. Then, the controller can determine the relative positions of the conductive plate 1 and the fixed plate 2 according to the parallel light received by the photosensitive panel 32.

[0054] S2: Determine whether it is in a connected state; if so, execute S3, if not, output S8;

[0055] In this step, if the moving contact 11 and the stationary contact 21 are not in a connected state, it is directly determined that the moving contact 11 and the stationary contact 21 are abnormally connected.

[0056] S3: Detecting the force between the moving contact 11 and the stationary contact 21;

[0057] S4: If the interaction force is greater than the set minimum interaction force, if so, execute S5, if not, output S8;

[0058] S5: monitoring the temperature between the moving contact 11 and the stationary contact 21;

[0059] In steps S4 and S5, the force detection module 33 can detect the magnitude of the force between the moving contact 11 and the stationary contact 21. If the force detection module 33 detects that there is no interaction force between the moving contact 11 and the stationary contact 21 or the interaction force is less than the set minimum interaction force, the moving contact 11 and the stationary contact 21 are abnormally connected.

[0060] S6: The temperature and the set value are within the error range. If so, output S7, if not, output S8;

[0061] In steps S5 and S6, when a false connection occurs between the moving contact 11 and the static contact 21, the current between the moving joint and the static joint will increase, thereby causing an increase in heat and even causing a fire. The temperature monitoring module can monitor the temperature between the moving contact 11 and the static contact 21, and upload the monitored temperature to the background through the controller. When the temperature exceeds the preset value, the background will remind the staff that the moving joint and the static joint are abnormally connected; when the temperature does not exceed the preset value, the background will remind the staff that the moving joint and the static joint are normally connected.

[0062] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An isolating switch, comprising a conductive plate (1), a fixed plate (2) and a bracket, wherein one end of the conductive plate (1) is hinged to the bracket and the other end is provided with a moving contact (11), the fixed plate (2) is fixed to the bracket and one end is provided with a stationary contact (21), the moving contact (11) and the stationary contact (21) have a connected state of being mutually engaged and a separated state of being mutually separated; It is characterized in that Also includes: A position detection module, comprising a light source panel (31) and a photosensitive panel (32) which are arranged parallel to each other and at intervals, the conductive plate (1) and the fixing plate (2) being arranged between the light source panel (31) and the photosensitive panel (32), the plane swept by the conductive plate (1) being parallel to both the light source panel (31) and the photosensitive panel (32), the light source panel (31) emitting parallel light towards the photosensitive panel (32), and the photosensitive panel (32) identifying the parallel light irradiating thereon; The parallel light is perpendicular to the photosensitive panel (32), and can project the real contours of the conductive plate (1) and the fixed plate (2) onto the photosensitive panel (32); the light source panel (31) comprises a light absorbing plate and a plurality of linear light sources, and the plurality of linear light sources are fixed on the light absorbing plate in a matrix form; A controller, the controller being connected to the light source panel (31) and the photosensitive panel (32) respectively, and the controller being capable of determining the relative position of the conductive plate (1) and the fixed plate (2) according to the parallel light received by the photosensitive panel (32).

2. The isolating switch according to claim 1, characterized in that: It also includes a force detection module (33), wherein the force detection module (33) detects the interaction force between the moving contact (11) and the stationary contact (21).

3. The isolating switch according to claim 2, characterized in that: The force detection module (33) comprises a spring (331) and a detection portion (332); one end of the spring (331) is fixedly connected to the bracket; when the moving contact (11) and the stationary contact (21) are in the connected state, the other end of the spring (331) is pressed against the conductive plate (1), and the spring (331) is in a compressed state.

4. The isolating switch according to claim 3, characterized in that: The moving contact (11) and the stationary contact (21) have one clamping plate and the other is a U-shaped clamping groove, and the clamping plate is clamped with the clamping groove.

5. The isolating switch according to claim 1, characterized in that: It also comprises a camera module, wherein the camera module photographs the conductive plate (1), the fixing plate (2) and the bracket.

6. The isolating switch according to claim 1, characterized in that: It also includes a wireless data transmission module, which is connected to the controller.

7. The isolating switch according to claim 1, characterized in that: It also comprises a temperature monitoring module, wherein the temperature monitoring module is used to detect the temperature at the moving contact (11) and the stationary contact (21).

8. The isolating switch according to any one of claims 1 to 7, characterized in that: It also includes a red and green indicator light, which is connected to the controller.

9. A method for detecting the state of an isolating switch, implemented based on the isolating switch according to any one of claims 1 to 8, characterized in that: include: S1: obtaining position information of a moving contact (11) and a stationary contact (21); S2: Determine whether it is in a connected state; if so, execute S3, if not, output S8; S3: detecting the force between the moving contact (11) and the stationary contact (21); S4: If the interaction force is greater than the set minimum interaction force, if so, execute S5, if not, output S8; S5: monitoring the temperature between the moving contact (11) and the stationary contact (21); S6: The temperature and the set value are within the error range. If so, output S7, if not, output S8; S7: The stationary contact (21) and the moving contact (11) are normally connected; S8: The stationary contact (21) and the moving contact (11) are not connected normally.

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