Insulation fault locator
By using a combination mechanism of sliding bars and cover plates in the fault positioner, the centralized opening and closing of the connection port is achieved, which solves the problem of cumbersome operation in the prior art, and improves the convenience of wire connection and operation accuracy.
Patent Information
- Application Number
- CN202411560224.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-04
- Publication Date
- 2025-02-11
AI Technical Summary
The existing fault locator is complicated to operate when connecting wires, especially when installed in the cabinet. Due to the limited space and the complex opening and closing mechanism of the cover plate, the operation difficulty is increased.
The sliding bar and multiple cover plates are arranged, and the sliding bar is driven to slide through the drive assembly, driving all cover plates to open or close the connection ports at the same time, simplifying the wire connection process.
It improves the connection convenience between the connecting terminal and the connecting port, reduces operating steps, especially when installed in the cabinet, and enhances the convenience and accuracy of operation.
Smart Images
Figure CN119414179A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of electrical instruments and meters, and in particular to an insulation fault locator. Background Art
[0002] A fault locator is a device used to detect and locate fault points in power systems. It can determine the location and type of fault points by analyzing electrical signals on power lines. In power systems, fault locators are usually used in conjunction with insulation resistance monitors. Insulation resistance monitors are used to monitor changes in resistance values in circuits in real time. Once resistance values exceed a preset range or fluctuate abnormally, they will immediately send a signal to the fault locator, allowing the fault locator to quickly locate the fault point and provide maintenance personnel with more comprehensive fault information and maintenance guidance. This collaborative approach helps improve the efficiency and accuracy of fault handling.
[0003] In the prior art, a plurality of connection ports are provided on the outer wall of the fault locator, and the connection ports are used for plugging in the connection terminals of the power lines. A cover plate is slidably installed on each connection port, and the cover plate is provided with a return spring. The return spring normally forces the cover plate to close on the corresponding connection port to reduce the possibility of foreign matter (dust or liquid, etc.) falling into the connection port. When connecting the wires, the connection port can be opened by sliding the cover plate so that the connection terminal of the wire can be inserted into the connection port.
[0004] However, in this type of fault locator, all connection ports are opened and closed by their corresponding covers, which means that each time the operator connects a wire, he needs to turn the cover of the corresponding connection port to insert the connection terminal of the wire into the connection port. The connection of multiple wires requires repeating this operation, which is cumbersome. In addition, when the fault locator is installed in a cabinet (electrical cabinet, switch cabinet, etc.), due to the limited space in the cabinet, it may be blocked by other electrical components in the cabinet, and it is difficult for the operator to accurately observe the specific location of the connection port. At this time, the operator needs to roughly determine the location of the connection port by touch, then turn the cover of the connection port, and then insert the connection terminal into the connection port, which increases the difficulty of operation, so further improvement is needed. Summary of the invention
[0005] In order to improve the connection convenience between the connection terminal and the connection port, the present application provides an insulation fault locator.
[0006] The insulation fault locator provided in this application adopts the following technical solution: An insulation fault locator comprises a locator body, wherein the outer side wall of the locator body is provided with a plurality of connection ports arranged in a straight line direction at intervals; a sliding groove is provided in the locator body, wherein the sliding groove connects all the connection ports, a sliding bar is slidably installed in the sliding groove, wherein the sliding bar is provided with a plurality of cover plates, and the plurality of cover plates are provided corresponding to the plurality of connection ports; the sliding groove has a first point position and a second point position, wherein when the sliding bar moves to the first point position, each of the cover plates opens the corresponding connection port, and when the sliding bar moves to the second point position, each of the cover plates closes the corresponding connection port, and the locator body is provided with a driving component for driving the sliding bar to slide.
[0007] By adopting the above technical solution, through the arrangement of the sliding bar and multiple cover plates, the multiple cover plates are arranged corresponding to the multiple connection ports for opening and closing the corresponding connection ports. When the main body of the locator is installed in a cabinet (electrical cabinet, switch cabinet, etc.) and various wires need to be connected, the driving component drives the sliding bar to slide to the first point position, so that the sliding bar can drive all the cover plates to open all the connection ports at the same time to facilitate the connection of various wires. There is no need to open the cover plates corresponding to each connection port one by one, thereby improving the connection convenience between the connection terminal and the connection port.
[0008] Optionally, each of the cover plates is slidably connected to the sliding bar, and a reset spring is provided between each of the cover plates and the sliding bar, and the reset spring is used to limit the relative position between the cover plate and the sliding bar; when the connecting terminal of the wire is plugged into the connecting port and the sliding bar moves to the second point, the cover plate abuts against the side wall of the connecting terminal, and the reset spring is deformed and has elastic force.
[0009] By adopting the above technical solution, through the setting of the reset spring, each cover plate is connected to the sliding bar through the reset spring, so that when the sliding bar moves to the first point, the sliding bar pulls all the cover plates through the reset spring, so that all the cover plates open their corresponding connection ports, so as to facilitate the connection of various wires. For the connection port connected with the connection terminal, when the sliding bar moves to the second point, the cover plate corresponding to the connection port connected with the connection terminal remains motionless under the obstruction of the connection terminal, and the corresponding reset spring is deformed and has elastic force, which can force the cover plate to press against the side wall of the connection terminal, thereby improving the connection stability of the connection terminal. For the connection port not connected with the connection terminal, when the sliding bar moves to the second point, the cover plate corresponding to the connection port not connected with the connection terminal can move with the sliding bar, thereby closing the connection port not connected with the connection terminal, reducing the possibility of foreign objects such as dust from the outside falling into the connection port. That is, when the sliding bar moves to the second point, the connection port connected with the connection terminal remains in an open state, and the connection port not connected with the connection terminal remains in a closed state, thereby improving the convenience of operation of the overall structure.
[0010] Optionally, the driving assembly includes a driving gear, a driving rack, a driving rod and a limit member, the driving gear is rotatably connected in a sliding groove, the driving rack is connected to the sliding bar and meshes with the driving gear for transmission; the driving rod is coaxially connected to the driving gear, one end of the driving rod passes through the sliding groove and is connected to a driving head; the limit member is arranged in the sliding groove to limit the free rotation of the driving rod.
[0011] By adopting the above technical solution, through the arrangement of the driving gear, the driving rack, the driving rod and the limiting member, when it is necessary to open all the connection ports (that is, the sliding bar moves from the second point position to the first point position), the driving gear is driven to rotate by the driving rod, and the sliding bar can be driven to move under the cooperation of the driving gear and the driving rack, so that all the connection ports can be opened. After all the connection ports are opened, the free rotation of the driving rod is limited by the limiting member, and then the position of the limiting bar is fixed, so that all the connection ports remain in an open state to facilitate the connection of the wires; after the wires are connected, the driving rod is driven to reverse, driving the sliding bar to move in the opposite direction (that is, moving from the first point position of the sliding bar to the second point position), so that the cover plate corresponding to the connection port connected to the connection terminal can be pressed against the side wall of the connection terminal, and the cover plate corresponding to the connection port not connected to the connection terminal is closed on the connection port, thereby improving the operational convenience of the overall structure.
[0012] Optionally, a first through hole connected to the sliding groove is formed on the outer wall of the locator body, and the end of the driving rod away from the driving head is inserted into the sliding groove through the first through hole, and the driving rod slides and rotates through the first through hole to be connected to the locator body; the limiting member includes a limiting head, which is connected to the end of the driving rod away from the driving head, and a limiting groove is formed on the inner wall of the sliding groove, and the shape of the limiting groove is adapted to the shape of the limiting head for the limit head to be plugged in, and the cross-sectional shape of the limiting head is a polygon.
[0013] By adopting the above-mentioned technical scheme, through the setting of the limit head and the limit groove, the driving rod is slidably and rotatably connected with the first penetration hole. When the driving rod rotates to drive the sliding bar to move from the first point position to the second point position or the second point position to the first point position, the driving rod is pushed to force the driving rod to slide along its own central axis, so that the limit head is inserted into the limit groove. The limit head and the limit groove are plugged into and matched to limit the free rotation of the driving rod, thereby forcing the sliding bar to remain at the first point position or remain at the second point position, thereby improving the convenience of operation for fixing the position of the sliding bar.
[0014] Optionally, the inner wall of the sliding groove is provided with a cutting arc surface, and the cutting arc surface is located at the connection between the sliding groove and the connection port. When the cover is in an open state and the connection terminal is plugged into the connection port, the cutting arc surface, the side wall of the cover close to the cutting arc surface, and the side wall of the connection terminal close to the cutting arc surface are combined to form a heat dissipation cavity; the positioning instrument body is provided with an air supply part for blowing air into the heat dissipation cavity.
[0015] By adopting the above-mentioned technical solution and setting up the heat dissipation cavity and the air supply part, when the connection port is plugged with the connection terminal, the cutting arc surface, the side wall of the cover plate and the side wall of the connection terminal are combined to form a heat dissipation cavity, and the heat generated at the connection terminal and the connection port is conducted to the heat dissipation cavity. By blowing air into the heat dissipation cavity through the air supply part, the heat can be dissipated in time, thereby reducing the possibility of overheating of the connection terminal.
[0016] Optionally, a ventilation cavity is provided in the main body of the locator, and the air supply component includes an air supply pipe and an air supply device, the air supply device is connected to the main body of the locator, the inlet end of the air supply pipe is connected to the output end of the air supply device, and the outlet end of the air supply pipe is connected to the ventilation cavity; an inlet air duct and an outlet air duct are respectively provided in the cover plate, and when the cover plate is opened and the connecting terminal is plugged into the connecting port, the inlet end of the inlet air duct is connected to the ventilation cavity, the outlet end of the inlet air duct is connected to the heat dissipation cavity, and the inlet end of the outlet air duct is connected to the heat dissipation cavity, and the outlet end of the outlet air duct is connected to the outside.
[0017] By adopting the above-mentioned technical solution, through the setting of the inlet air duct and the outlet air duct, the sliding bar drives the cover to open the corresponding connection port and the connection terminal is inserted into the connection port. At this time, the ventilation cavity and the heat dissipation cavity are connected through the inlet air duct, and the gas enters the heat dissipation cavity from the ventilation cavity and the inlet air duct in turn, thereby blowing the heat out from the outlet air duct, thereby improving the heat dissipation effect.
[0018] Optionally, the inner wall of the sliding groove is provided with a plurality of connecting grooves connected to the ventilation cavity, and the plurality of connecting grooves are arranged corresponding to the plurality of cover plates. When the cover plate is in an open state, the inlet end of the inlet air flow channel of the cover plate is connected to the corresponding connecting groove, and the inlet air flow channel is connected to the ventilation cavity through the corresponding connecting groove. The side wall of each cover plate is provided with a shielding strip, and when the cover plate is in a closed state, the shielding strip of the cover plate covers the corresponding connecting groove.
[0019] By adopting the above-mentioned technical solution and setting the shielding strip, in the connection port that is not connected to the connection terminal, the corresponding cover plate is closed on this connection port, and the corresponding shielding strip can cover the corresponding connecting groove, so that the gas in the ventilation cavity cannot enter (that is, the gas cannot enter the inlet flow channel of the cover plate in the closed state), and the gas in the ventilation cavity can be concentrated to enter the inlet flow channel of the cover plate corresponding to the connection port connected to the connection terminal, so as to dissipate the heat dissipation cavity corresponding to the connection port connected to the connection terminal, so that the heat dissipation is targeted and the heat dissipation effect is improved.
[0020] Optionally, a heat conducting sheet is fitted on the cut arc surface, and the heat conducting sheet partially abuts against the side wall of the connecting terminal; the heat conducting sheet is connected to a heat conducting column, and the heat conducting column enables the heat dissipation cavity to form a guide channel surrounding the outer peripheral side of the heat conducting column, and the inlet end of the guide channel is opposite to the outlet end of the inlet flow channel, and the outlet end of the guide channel is opposite to the inlet end of the outlet flow channel.
[0021] By adopting the above technical solution, through the setting of the heat conductive sheet, the heat generated by the connecting terminal is quickly transferred to the heat conductive sheet, and then transferred from the heat conductive sheet to the heat conductive column. When the gas enters the heat dissipation cavity from the inlet flow channel, the gas is discharged to the outlet flow channel through the annular flow guide channel, thereby taking away the heat in the heat conductive column; the flow guide channel surrounds the heat conductive column, so that the gas can flow around the heat conductive column, thereby improving the heat dissipation effect of the heat conductive column, and then improving the heat dissipation effect of the connecting terminal.
[0022] Optionally, an adsorption channel is provided in the cover plate, one end of the adsorption channel is connected to the outlet channel, and the other end passes through the side wall of the cover plate away from the connection port; the outer wall of the locator body is provided with a plurality of convection holes connected to the sliding grooves, and the plurality of convection holes are arranged corresponding to the plurality of cover plates, and the adsorption channel of each cover plate is connected to the outside through the corresponding convection hole.
[0023] By adopting the above technical solution and setting the adsorption flow channel, according to Bernoulli's principle, the air pressure is low where the flow rate is fast, and the air pressure is high where the flow rate is slow. When the gas enters the heat dissipation cavity and takes the heat in the heat dissipation cavity outward from the outlet flow channel, the air pressure in the outlet flow channel is lower than the external air pressure due to the air flow passing through the outlet flow channel, thereby sucking the external gas from the convection hole, and the external gas is discharged outward again from the convection hole and the outlet flow channel in turn, forming a cycle, thereby increasing the air flow speed around the locator body, and thus improving the heat dissipation effect of the locator body.
[0024] Optionally, the outlet flow channel includes a first air outlet section and a second air outlet section which are connected in a straight line, an end of the first air outlet section away from the second air outlet section is used to connect to the heat dissipation cavity, and an end of the second air outlet section away from the first air outlet section is used to connect to the outside world; the outlet end of the adsorption flow channel is connected to the connection between the first air outlet section and the second air outlet section, and the angle between the length direction of the adsorption flow channel and the length direction of the first air outlet section is an acute angle.
[0025] By adopting the above-mentioned technical scheme, through the setting of the first air outlet section and the second air outlet section, the angle between the length direction of the adsorption flow channel and the length direction of the first air outlet end is an acute angle, so that after the gas in the heat dissipation cavity enters the first air outlet section, it is not easy to enter the adsorption flow channel, and is discharged outward through the second air outlet section, thereby reducing the possibility of the gas in the heat dissipation cavity entering the adsorption flow channel, resulting in the outside air being unable to be sucked into the outlet flow channel, thereby increasing the air flow speed around the main body of the locator.
[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the arrangement of the sliding bar and multiple cover plates, the multiple cover plates are arranged correspondingly to the multiple connection ports to open and close the corresponding connection ports. When the main body of the locator is installed in a cabinet (electrical cabinet, switch cabinet, etc.) and various wires need to be connected, the driving component drives the sliding bar to slide to the first point, so that the sliding bar can drive all the cover plates to open all the connection ports at the same time, so as to facilitate the connection of various wires. There is no need to open the cover plates corresponding to each connection port one by one, thereby improving the connection convenience between the connection terminal and the connection port; 2. Through the setting of the shielding strip, in the connection port that is not connected to the connection terminal, the corresponding cover plate is closed on the connection port, and the corresponding shielding strip can cover the corresponding connecting groove, so that the gas in the ventilation cavity cannot enter (that is, the gas cannot enter the inlet flow channel of the cover plate in the closed state), and the gas in the ventilation cavity can be concentrated into the inlet flow channel of the cover plate corresponding to the connection port connected to the connection terminal, so as to dissipate the heat dissipation cavity corresponding to the connection port connected to the connection terminal, so that the heat dissipation is targeted and the heat dissipation effect is improved; 3. Through the setting of the adsorption flow channel, according to Bernoulli's principle, the air pressure is low where the flow rate is fast, and the air pressure is high where the flow rate is slow. When the gas enters the heat dissipation cavity and takes the heat in the heat dissipation cavity outward from the outlet flow channel, the air pressure in the outlet flow channel is lower than the external air pressure due to the air flow passing through the outlet flow channel, thereby sucking the external gas from the convection hole, and the external gas is discharged outward again from the convection hole and the outlet flow channel in turn, forming a cycle, which increases the air flow speed around the locator body, thereby improving the heat dissipation effect of the locator body. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 is a schematic diagram of the overall structure of Example 1; Figure 2 is a partial cross-sectional view of the drive assembly of embodiment 1; Figure 3 is a partial cross-sectional view of the cover plate in the closed state of embodiment 1; Figure 4 is a schematic diagram of the structure of the return spring embodied in Example 1; Figure 5 is a partial cross-sectional view of the embodiment 1 showing the cover plate in an open state; Figure 6 is a partial cross-sectional view of Embodiment 1 showing the cover plate in an open state and the sliding bar at a second point; Figure 7 is a partial cross-sectional view of the limit head of embodiment 1; Figure 8 is a partial cross-sectional view of the heat dissipation cavity of embodiment 2; Fig. 9 is a partial cross-sectional view of embodiment 2 showing that the shielding strip shields the connecting groove; Fig.10 is a partial cross-sectional view of a heat-conducting column embodying Example 3; Fig.11 It is a partial cross-sectional view of the adsorption channel of Example 4.
[0028] Explanation of reference numerals: 1. Positioning instrument body; 11. Connection port; 12. Sliding slot; 121. First point; 122. Second point; 123. First penetration hole; 124. Limiting slot; 125. Cutting arc surface; 126. Connecting slot; 127. Convection hole; 128. Magnet; 13. Heat dissipation cavity; 131. Guide channel; 14. Ventilation cavity; 2. Sliding bar; 21. Cover plate; 211. Inlet airflow channel; 212. Outlet airflow channel; 213, shielding strip; 214, adsorption channel; 215, first air outlet section; 216, second air outlet section; 22, return spring; 23, installation slide; 3, drive assembly; 31, drive gear; 311, rotating ring; 312, second penetration hole; 32, drive rack; 33, drive rod; 34, drive head; 35, limit head; 4, air supply pipe; 5, heat conductive sheet; 51, heat conductive column; 52, connecting column; 6, connecting terminal. DETAILED DESCRIPTION
[0029] The following is combined with Figure 1 -Attached Fig.11 This application is described in further detail.
[0030] Embodiment 1: An embodiment of the present application discloses an insulation fault locator.
[0031] Reference Figure 1 , Figure 2 An insulation fault locator includes a locator body 1, the outer wall of the locator body 1 is provided with a plurality of connection ports 11 for plugging in connection terminals 6 of power supply lines, and the plurality of connection ports 11 are arranged at intervals along a straight line direction; a sliding groove 12 is provided in the locator body 1, the sliding groove 12 is located on one side of the connection port 11, and the sliding groove 12 is connected to all the connection ports 11.
[0032] Reference Figure 2 , Figure 3 , Figure 4 , a sliding bar 2 is installed in the sliding groove 12, and the arrangement direction of the multiple connection ports 11 is consistent with the length direction of the sliding bar 2 (that is, the multiple connection ports 11 are arranged at intervals along the length direction of the sliding bar 2). In this embodiment, the sliding bar 2 is slidably installed in the sliding groove 12 and can slide along its own width direction. The side wall of the sliding bar 2 is provided with multiple installation grooves 23, and the multiple installation grooves 23 are correspondingly arranged with the multiple connection ports 11. Each installation groove 23 is slidably installed with a cover plate 21 (that is, the multiple cover plates 21 are correspondingly arranged with the multiple connection ports 11), and the cover plate 21 is used to cover the corresponding connection port 11; in this embodiment, a return spring 22 is installed between each cover plate 21 and the sliding bar 2, and the return spring 22 is used to limit the relative position between the cover plate 21 and the sliding bar 2. One end of the return spring 22 is fixedly connected to the side wall of the cover plate 21, and the other end is fixedly connected to the side wall of the sliding bar 2.
[0033] Reference Figure 3 , Figure 5 , Figure 6 For ease of description, the side of the sliding slot 12 away from the connection port 11 is defined as the first point 121, and the side of the sliding slot 12 close to the connection port 11 is defined as the second point 122; when all the connection ports 11 are not plugged into the connection terminals 6, when the sliding bar 2 moves to the first point 121, each cover plate 21 opens the corresponding connection port 11, and when the sliding bar 2 moves to the second point 122, each cover plate 21 closes the corresponding connection port 11; when the connection port 11 is plugged into the connection terminal 6, when the sliding bar 2 moves to the second point 122, the cover plate 21 abuts against the side wall of the connection terminal 6, and the return spring 22 is deformed and has elastic force.
[0034] Reference Figure 2 , Figure 7 The positioning instrument body 1 is provided with a driving component 3 for driving the sliding bar 2 to slide. In this embodiment, the driving component 3 includes a driving gear 31, a driving rack 32, a driving rod 33 and a limiter. A rotating ring 311 is coaxially fixed to the surface of the driving gear 31. The end face of the rotating ring 311 away from the driving gear 31 is rotatably connected to the inner wall of the sliding groove 12, and the driving gear 31 is rotatably connected to the sliding groove 12 through the rotating ring 311; one end of the driving rack 32 is fixedly connected to the side wall of the sliding bar 2 away from the connection port 11, and the driving rack 32 and the driving gear 31 are meshed for transmission. The length direction of the driving rack 32 is perpendicular to the length direction of the sliding bar 2. When the driving gear 31 rotates, it can drive the sliding bar 2 to approach or move away from the connection port 11.
[0035] Reference Figure 7 A first through hole 123 communicating with the sliding groove 12 is provided on the outer wall of the locator body 1, a second through hole 312 is provided on the surface of the driving gear 31, the driving rod 33 is coaxially arranged with the driving gear 31, one end of the driving rod 33 is fixedly connected with a driving head 34, the driving head 34 is located on the outer side of the locator body 1 for driving the driving rod 33 to rotate, and the end of the driving rod 33 away from the driving head 34 passes through the first through hole 123 and the second through hole 312 in sequence; in this embodiment, the driving rod 33 is slidably and rotatably connected to the locator body 1 through the first through hole 123, and the driving rod 33 is slidably connected to the second through hole 312.
[0036] Reference Figure 7The limit member is arranged in the sliding groove 12 to limit the free rotation of the driving rod 33. In this embodiment, the limit member is arranged as a limit head 35. The limit head 35 is fixedly installed at the end of the driving rod 33 away from the driving head 34. The cross-sectional shape of the limit head 35 is polygonal. The inner wall of the sliding groove 12 is provided with a limit groove 124. The shape of the limit groove 124 is adapted to the shape of the limit head 35 for the limit head 35 to be plugged in; the inner wall of the limit groove 124 is embedded with a magnet 128, and the magnet 128 is used to magnetically attract the limit head 35.
[0037] The implementation principle of Example 1 of the present application is as follows: when the locator body 1 is installed in a cabinet (electrical cabinet, switch cabinet, etc.) and various wires need to be connected, the driving rod 33 is driven to rotate, driving the sliding bar 2 to move from the second point 122 to the first point 121, and the sliding bar 2 can drive all cover plates 21 to open all connection ports 11 at the same time; then the driving rod 33 is pushed and the limit head 35 is forced to be inserted into the limit groove 124 to limit the free sliding of the sliding bar 2, so that the sliding bar 2 remains at the first point 121, that is, all connection ports 11 are kept in an open state, so as to facilitate the connection of various wires, without having to open the cover plates 21 corresponding to each connection port 11 one by one, thereby improving the connection convenience between the connection terminal 6 and the connection port 11.
[0038] For the connection port 11 connected to the connection terminal 6, when the sliding bar 2 moves to the second point 122, the cover plate 21 corresponding to the connection port 11 connected to the connection terminal 6 remains stationary under the obstruction of the connection terminal 6. At this time, the corresponding return spring 22 is deformed and has elastic force. This elastic force can force the cover plate 21 to press against the side wall of the connection terminal 6, thereby improving the connection stability of the connection terminal 6.
[0039] For the connection port 11 not connected to the connection terminal 6, when the slide bar 2 moves to the second point 122, the cover plate 21 corresponding to the connection port 11 not connected to the connection terminal 6 can move with the slide bar 2, so as to close the connection port 11 not connected to the connection terminal 6, reducing the possibility of foreign matter such as dust from the outside falling into the connection port 11. That is, when the slide bar 2 moves to the second point 122, the connection port 11 connected to the connection terminal 6 remains in an open state, and the connection port 11 not connected to the connection terminal 6 remains in a closed state, thereby improving the operational convenience of the overall structure.
[0040] Embodiment 2: An embodiment of the present application discloses an insulation fault locator.
[0041] Reference Figure 8 , Fig. 9 The difference between the insulation fault locator disclosed in the embodiment of the present application and the embodiment 1 is that: In this embodiment, the inner wall of the sliding groove 12 is provided with a plurality of cutting arc surfaces 125, and the plurality of cutting arc surfaces 125 are arranged corresponding to the plurality of connection ports 11. The cutting arc surfaces 125 are located at the connection between the sliding groove 12 and the corresponding connection ports 11. When the cover plate 21 is in an open state and the connection terminal 6 is plugged into the connection port 11, the cutting arc surfaces 125, the side walls of the cover plate 21 close to the cutting arc surfaces 125, and the side walls of the connection terminal 6 close to the cutting arc surfaces 125 are combined to form a heat dissipation cavity 13; a ventilation cavity 14 is provided in the positioning instrument body 1, and the ventilation cavity 14 is located on one side of the sliding groove 12.
[0042] Reference Figure 8 , Fig. 9 , an inlet air channel 211 and an outlet air channel 212 are respectively opened in the cover plate 21, and a plurality of connecting grooves 126 connected to the ventilation cavity 14 are opened on the inner wall of the sliding groove 12, and the plurality of connecting grooves 126 are arranged corresponding to the plurality of cover plates 21; when the cover plate 21 is in an open state, the inlet end of the inlet air channel 211 of the cover plate 21 is connected to the corresponding connecting groove 126, the inlet air channel 211 is connected to the ventilation cavity 14 through the corresponding connecting groove 126, and the outlet end of the inlet air channel 211 is connected to the heat dissipation cavity 13, and at the same time, the inlet end of the outlet air channel 212 is connected to the heat dissipation cavity 13, and the outlet end of the outlet air channel 212 is connected to the outside; a shielding strip 213 is fixedly installed on the side wall of each cover plate 21, and when the cover plate 21 is in a closed state, the inlet end of the inlet air channel 211 of the cover plate 21 is staggered with the corresponding connecting groove 126, and the shielding strip 213 of the cover plate 21 covers the corresponding connecting groove 126.
[0043] Reference Figure 8 , Fig. 9 The positioning instrument body 1 is provided with an air supply part for blowing air into the heat dissipation cavity 13, and the air supply part includes an air supply pipe 4 and an air supply device. The air supply device (not shown in the figure) is installed in the positioning instrument body 1. The air supply device can be a fan. The air supply pipe 4 is installed in the positioning instrument body 1. The inlet end of the air supply pipe 4 is connected to the output end of the air supply device, and the outlet end of the air supply pipe 4 is connected to the ventilation cavity 14. When all the cover plates 21 are in the open state and all the connection ports 11 are inserted with connection terminals 6, the air supply pipe 4 can blow air to the heat dissipation cavities 13 corresponding to all the connection ports 11.
[0044] The implementation principle of Example 2 of the present application is as follows: when the connection port 11 is connected to the connection terminal 6, the cutting arc surface 125, the side wall of the cover plate 21 and the side wall of the connection terminal 6 are combined to form a heat dissipation cavity 13, and the heat generated at the position of the connection terminal 6 and the connection port 11 is conducted to the heat dissipation cavity 13. By blowing air into the heat dissipation cavity 13 through the air supply pipe 4, the heat can be dissipated in time, thereby reducing the possibility of overheating of the connection terminal 6.
[0045] The inlet flow channel 211 of each cover plate 21 is connected to the ventilation cavity 14 through the corresponding connecting groove 126. When the sliding bar 2 moves to the second point 122, the connection port 11 without the connection terminal 6 is not connected. At this time, the corresponding cover plate 21 is closed on this connection port 11, and the corresponding shielding strip 213 can cover the corresponding connecting groove 126, so that the gas in the ventilation cavity 14 cannot enter (that is, the gas cannot enter the inlet flow channel 211 of the cover plate 21 in the closed state), and the gas in the ventilation cavity 14 can be concentrated to enter the inlet flow channel 211 of the cover plate 21 corresponding to the connection port 11 connected to the connection terminal 6, thereby dissipating the heat dissipation cavity 13 corresponding to the connection port 11 connected to the connection terminal 6, so that the heat dissipation is targeted and the heat dissipation effect is improved.
[0046] Embodiment 3: An embodiment of the present application discloses an insulation fault locator.
[0047] Reference Fig.10 The difference between the insulation fault locator disclosed in the embodiment of the present application and the embodiment 2 is that: In this embodiment, each cutting arc surface 125 is bonded and fixed with a heat conductive sheet 5. When the connection port 11 is plugged with a connection terminal 6, the heat conductive sheet 5 partially abuts against the side wall of the connection terminal 6. The heat conductive sheet 5 is installed with a heat conductive column 51 located in the heat dissipation cavity 13. The two ends of the heat conductive column 51 are extended along the length direction of the sliding bar 2. A connecting column 52 is installed between the heat conductive sheet 5 and the heat conductive column 51. The two ends of the connecting column 52 are respectively fixedly connected to the heat conductive sheet 5 and the heat conductive column 51. The heat conductive sheet 5 and the heat conductive column 51 are connected as a whole through the connecting column 52. The heat conductive sheet 5, the connecting column 52 and the heat conductive column 51 are all made of heat conductive silicone.
[0048] The heat conducting column 51 forms a guide channel 131 around the outer circumference of the heat conducting column 51 in the heat dissipation cavity 13 . The inlet end of the guide channel 131 is opposite to the outlet end of the inlet channel 211 , and the outlet end of the guide channel 131 is opposite to the inlet end of the outlet channel 212 .
[0049] The implementation principle of Example 3 of the present application is as follows: the heat-conducting sheet 5, the connecting column 52 and the heat-conducting column 51 made of thermally conductive silicone have good thermal conductivity. Due to the passage of current, the connecting terminal 6 will generate a large amount of heat, and the heat generated by the connecting terminal 6 is quickly transferred to the heat-conducting sheet 5, and then transferred from the heat-conducting sheet 5 to the heat-conducting column 51. When the gas enters the heat dissipation cavity 13 from the inlet flow channel 211, the gas is discharged to the outlet flow channel 212 through the annular guide channel 131, thereby taking away the heat in the heat-conducting column 51; the guide channel 131 surrounds the heat-conducting column 51, so that the gas can flow around the heat-conducting column 51, thereby improving the heat dissipation effect on the heat-conducting column 51, and then improving the heat dissipation effect on the connecting terminal 6.
[0050] Embodiment 4: An embodiment of the present application discloses an insulation fault locator.
[0051] Reference Fig.11 The difference between the insulation fault locator disclosed in the embodiment of the present application and the embodiment 3 is that: In this embodiment, an adsorption flow channel 214 is opened in the cover plate 21, one end of the adsorption flow channel 214 is connected to the outlet flow channel 212, and the other end passes through the side wall of the cover plate 21 away from the connection port 11; the outer wall of the positioning instrument body 1 is opened with a plurality of convection holes 127 connected to the sliding groove 12, and the plurality of convection holes 127 are arranged corresponding to the plurality of cover plates 21, and the adsorption flow channel 214 of each cover plate 21 is connected to the outside through the corresponding convection holes 127; it should be noted that the convection holes 127 and the connection port 11 are distributed on different outer walls of the positioning instrument body 1.
[0052] Reference Fig.11 The outlet flow channel 212 includes a first outlet section 215 and a second outlet section 216 which are connected in a straight line. An end of the first outlet section 215 away from the second outlet section 216 is used to connect to the heat dissipation cavity 13, and an end of the second outlet section 216 away from the first outlet section 215 is used to connect to the outside. The outlet end of the adsorption channel 214 is connected to the connection between the first outlet section 215 and the second outlet section 216, and the angle between the length direction of the adsorption channel 214 and the length direction of the first outlet section 215 is an acute angle.
[0053] The implementation principle of Example 4 of the present application is: According to Bernoulli's principle, the air pressure is low where the flow rate is fast, and the air pressure is high where the flow rate is slow. When the gas enters the heat dissipation cavity 13 and takes the heat in the heat dissipation cavity 13 outward from the outlet air channel 212, the air pressure in the outlet air channel 212 is lower than the outside air pressure due to the air flow passing through the outlet air channel 212, thereby sucking the outside air from the convection holes 127, and the outside air is discharged outward again from the convection holes 127 and the outlet air channel 212 in turn, forming a cycle, thereby increasing the air flow speed around the locator body 1, and thus improving the heat dissipation effect on the locator body 1.
[0054] The angle between the length direction of the adsorption flow channel 214 and the length direction of the first air outlet section 215 is an acute angle, so that after the gas in the heat dissipation cavity 13 enters the first air outlet section 215, it is not easy to enter the adsorption flow channel 214, and is discharged outward through the second air outlet section 216, thereby reducing the possibility that the gas in the heat dissipation cavity 13 enters the adsorption flow channel 214, resulting in the outside air being unable to be sucked into the outlet flow channel 212, thereby increasing the air flow speed around the positioning instrument body 1.
[0055] The above are preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. An insulation fault locator, characterized in that: The invention comprises a positioning instrument body (1), wherein the outer wall of the positioning instrument body (1) is provided with a plurality of connection ports (11) arranged in a straight line direction at intervals; a sliding groove (12) is provided in the positioning instrument body, wherein the sliding groove (12) is connected to all the connection ports (11); a sliding bar (2) is slidably installed in the sliding groove (12), wherein the sliding bar (2) is provided with a plurality of cover plates (21), wherein the plurality of cover plates (21) are arranged corresponding to the plurality of connection ports (11); the sliding groove (12) has a first point position (121) and a second point position (122); when the sliding bar (2) moves to the first point position (121), each of the cover plates (21) opens the corresponding connection port (11); when the sliding bar (2) moves to the second point position (122), each of the cover plates (21) closes the corresponding connection port (11); and the positioning instrument body (1) is provided with a driving component (3) for driving the sliding bar (2) to slide.
2. An insulation fault locator according to claim 1, characterized in that: Each of the cover plates (21) and the sliding bar (2) is slidably connected, and a return spring (22) is provided between each of the cover plates (21) and the sliding bar (2), and the return spring (22) is used to limit the relative position between the cover plate (21) and the sliding bar (2); when the connecting terminal (6) of the electric wire is plugged into the connecting port (11) and the sliding bar (2) moves to the second point (122), the cover plate (21) abuts against the side wall of the connecting terminal (6), and the return spring (22) is deformed and has elastic force.
3. An insulation fault locator according to claim 1, characterized in that: The driving assembly (3) comprises a driving gear (31), a driving rack (32), a driving rod (33) and a limiting member; the driving gear (31) is rotatably connected to the sliding groove (12); the driving rack (32) is connected to the sliding bar (2) and meshes with the driving gear (31) for transmission; the driving rod (33) is coaxially connected to the driving gear (31); one end of the driving rod (33) passes through the sliding groove (12) and is connected to a driving head (34); the limiting member is arranged in the sliding groove (12) to limit the free rotation of the driving rod (33).
4. An insulation fault locator according to claim 3, characterized in that: The outer wall of the positioning instrument body (1) is provided with a first through hole (123) connected to the sliding groove (12); the end of the driving rod (33) away from the driving head (34) penetrates into the sliding groove (12) through the first through hole (123); the driving rod (33) slides and rotates through the first through hole (123) to be connected to the positioning instrument body (1); the limiting member includes a limiting head (35); the limiting head (35) is connected to the end of the driving rod (33) away from the driving head (34); the inner wall of the sliding groove (12) is provided with a limiting groove (124); the shape of the limiting groove (124) is adapted to the shape of the limiting head (35) for the limiting head (35) to be plugged in; the cross-sectional shape of the limiting head (35) is a polygon.
5. An insulation fault locator according to claim 2, characterized in that: The inner wall of the sliding groove (12) is provided with a cutting arc surface (125), and the cutting arc surface (125) is located at the connection between the sliding groove (12) and the connection port (11). When the cover plate (21) is in an open state and the connection terminal (6) is plugged into the connection port (11), the cutting arc surface (125), the side wall of the cover plate (21) close to the cutting arc surface (125), and the side wall of the connection terminal (6) close to the cutting arc surface (125) are combined to form a heat dissipation cavity (13); the positioning instrument body (1) is provided with an air supply component for blowing air into the heat dissipation cavity (13).
6. An insulation fault locator according to claim 5, characterized in that: A ventilation cavity (14) is provided in the positioning instrument body (1), and the air supply component comprises an air supply pipe (4) and an air supply device, wherein the air supply device is connected to the positioning instrument body (1), and the inlet end of the air supply pipe (4) is connected to the output end of the air supply device, and the outlet end of the air supply pipe (4) is connected to the ventilation cavity (14); an inlet flow channel (211) and an outlet flow channel (212) are respectively provided in the cover plate (21), and when the cover plate (21) is in an open state and the connecting terminal (6) is plugged into the connecting port (11), the inlet end of the inlet flow channel (211) is connected to the ventilation cavity (14), the outlet end of the inlet flow channel (211) is connected to the heat dissipation cavity (13), and the inlet end of the outlet flow channel (212) is connected to the heat dissipation cavity (13), and the outlet end of the outlet flow channel (212) is connected to the outside.
7. An insulation fault locator according to claim 6, characterized in that: The inner wall of the sliding groove (12) is provided with a plurality of connecting grooves (126) connected to the ventilation cavity (14); the plurality of connecting grooves (126) are arranged corresponding to the plurality of cover plates (21); when the cover plate (21) is in an open state, the inlet end of the air inlet passage (211) of the cover plate (21) is connected to the corresponding connecting groove (126); the air inlet passage (211) is connected to the ventilation cavity (14) through the corresponding connecting groove (126); the side wall of each cover plate (21) is provided with a shielding strip (213); when the cover plate (21) is in a closed state, the shielding strip (213) of the cover plate (21) covers the corresponding connecting groove (126).
8. An insulation fault locator according to claim 6, characterized in that: The cutting arc surface (125) is provided with a heat conducting sheet (5) in contact with a part of the side wall of the connecting terminal (6); the heat conducting sheet (5) is connected with a heat conducting column (51); the heat conducting column (51) enables the heat dissipation cavity (13) to form a flow guiding channel (131) surrounding the outer peripheral side of the heat conducting column (51); the inlet end of the flow guiding channel (131) is opposite to the outlet end of the inlet flow channel (211); and the outlet end of the flow guiding channel (131) is opposite to the inlet end of the outlet flow channel (212).
9. An insulation fault locator according to claim 6, characterized in that: An adsorption channel (214) is provided in the cover plate (21), one end of the adsorption channel (214) is connected to the outlet channel (212), and the other end passes through the side wall of the cover plate (21) away from the connection port (11); a plurality of convection holes (127) connected to the sliding groove (12) are provided on the outer wall of the positioning instrument body (1), and the plurality of convection holes (127) are arranged corresponding to the plurality of cover plates (21), and the adsorption channel (214) of each cover plate (21) is connected to the outside through the corresponding convection hole (127).
10. An insulation fault locator according to claim 9, characterized in that: The outlet flow channel (212) comprises a first outlet section (215) and a second outlet section (216) which are connected in a straight line; an end of the first outlet section (215) away from the second outlet section (216) is used to connect to the heat dissipation cavity (13); an end of the second outlet section (216) away from the first outlet section (215) is used to connect to the outside; the outlet end of the adsorption flow channel (214) is connected to the connection between the first outlet section (215) and the second outlet section (216); and the angle between the length direction of the adsorption flow channel (214) and the length direction of the first outlet section (215) is an acute angle.