Opening and closing position confirmation device and transformer substation

Abstract

The invention discloses a switch-on and switch-off position confirmation device and a transformer substation, and the device comprises a bottom plate which is provided with an installation part, the installation part is rotatably connected with a connecting mechanism crank arm, and the connecting mechanism crank arm is externally connected with an isolation switch operating mechanism; one end of the transition crank arm is connected with the connecting mechanism crank arm, and the other end is provided with a roller; the first signal assembly and the second signal assembly are arranged on the bottom plate, and sealing assemblies are arranged in the first signal assembly and the second signal assembly; when the switching-on position or the switching-off position is confirmed, the isolating switch operating mechanism drives the transition connecting lever to rotate, so that the roller is in contact with the first signal assembly or the second signal assembly. The transition connecting lever is installed on the connecting mechanism connecting lever, the matching distance between the transition connecting lever and the first signal assembly and the matching distance between the transition connecting lever and the second signal assembly are shortened, the transition connecting lever can make accurate contact with the first signal assembly and the second signal assembly, and the reliability of second position signal obtaining is improved; and secondly, the sealing assembly can effectively prevent external rainwater or impurities from entering, and safe operation is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of power transmission and transformation, and in particular relates to a switch opening and closing position confirmation device and a transformer substation. Background Art

[0003] The advantage of one-button sequential control is that it does not require operators to write operation tickets on site, does not require plate simulation, and does not require the first five checks of conventional substation operations, which saves operation time. In one-button sequential control, the main criterion for double confirmation of the disconnector position adopts the position signal of the double auxiliary contacts of closing and opening. Among them, the vast majority are confirmation devices composed of a mounting plate, a rain cover, a micro switch and a crank arm. The GIS connection mechanism drives the crank arm to rotate, and the crank arm presses the micro switch lever to switch and send out a second set of position signals. However, during the application process, on the one hand, the existing crank arm cannot accurately contact the micro switch lever due to structural factors, and there is intermittence in the process of signal acquisition; on the other hand, in order to obtain a reliable second position signal, the existing technology installs the confirmation device outdoors. Since the rain cover is a semi-enclosed structure, there is a risk of water ingress due to rain during the use of the confirmation device, resulting in failure to obtain the second position signal. Summary of the invention The purpose of the present invention is to provide a device and a substation for confirming the position of opening and closing switches. On the one hand, it is used to solve the technical defect that the existing crank arm cannot accurately contact the microswitch lever due to structural factors, resulting in intermittent signal acquisition; on the other hand, it is used to solve the technical defect that the rain cover has a half-enclosed structure, resulting in the risk of water ingress due to rain during the use of the confirmation device, causing failure in obtaining the second position signal.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: In a first aspect, a device for confirming a switch opening and closing position is provided, comprising: A bottom plate, on which a mounting piece is provided, to which a connecting mechanism crank arm is rotatably connected, and the connecting mechanism crank arm is externally connected to an isolating switch operating mechanism; A transition crank arm, one end of which is connected to the connecting mechanism crank arm, and the other end of which is provided with a roller; A first signal component and a second signal component are arranged on the bottom plate, and a sealing component is arranged inside the first signal component and the second signal component; Wherein, when the closing or opening position is confirmed, the isolating switch operating mechanism drives the transition crank arm to rotate so that the roller contacts the first signal component or the second signal component.

[0005] Furthermore, a main body input shaft is installed in the middle of the connecting mechanism crank arm, and the transition crank arm includes a fixed end and a clamping end, and the fixed end is connected to the main body input shaft through a clamping screw; The two opposite sides of the clamping end are both provided with limiting plates, and the limiting plates are fitted with the outer sides of the crank arms of the connecting mechanism.

[0006] Furthermore, the fixed end is a plate-shaped structure.

[0007] Furthermore, the first signal component and the second signal component each include a micro switch protection cover, wherein a travel switch and a sealing component are arranged in the micro switch protection cover; The travel switch is provided with a pressure plate 22 and a transition plate, and the sealing assembly is in contact with the transition plate; The transition plate is connected to a limit rod by bolts, the end of the limit rod extends to the outside of the micro switch protection cover and is provided with a rainproof edge, the rainproof edge is connected to a rain shield, and a driving block is installed on the top of the rain shield.

[0008] Furthermore, the sealing assembly includes a silicone pad, a cover plate is provided on the top of the micro switch protection cover, and the silicone pad is arranged on the bottom of the cover plate and on the side wall of the micro switch protection cover close to the limit rod.

[0009] Furthermore, the rain shield is a structure with one end open and the other end closed, and the inner wall of the open end of the rain shield is in contact with the outer wall of the rainproof edge.

[0010] Furthermore, a return spring is installed at one end of the limit rod away from the micro switch protection cover.

[0011] Furthermore, the transition plate includes a first transition plate and a second transition plate, the first transition plate and the second transition plate are spaced apart from each other and connected to each other via a limiting rod.

[0012] Furthermore, a one-way ventilation valve is provided on the micro switch protection cover.

[0013] In a second aspect, a substation is provided, wherein an isolating switch operating mechanism is installed in the substation, and the isolating switch operating mechanism is installed with the above-mentioned opening and closing position confirmation device.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. Installing a transition crank arm on the crank arm of the connecting mechanism not only shortens the matching distance between the first signal component and the second signal component, but also enables precise contact with the first and second signal components, thereby improving the reliability of obtaining the second position signal; secondly, by installing a sealing component in the first and second signal components, when the confirmation device is installed outdoors for use, the sealing component can effectively block the entry of external rain or impurities, thereby ensuring the safe operation of the first and second signal components.

[0015] 2. One end of the transition crank arm is fixedly connected to the input shaft of the main body, and the other end is fitted with the outer side of the connecting mechanism crank arm. When the disconnector operating mechanism drives the connecting mechanism crank arm to rotate, the connecting mechanism crank arm can drive the transition crank arm to rotate smoothly, thereby ensuring that the transition crank arm is in contact with the first and second signal components.

[0016] 3. The fixed end of the transition crank arm is a plate-like structure. During the process of fixing with the crank arm of the connecting mechanism, it can be closely matched with the surface of the crank arm of the connecting mechanism, thereby improving the firmness of the fixation with the crank arm of the connecting mechanism.

[0017] 4. By installing a sealing component in the micro switch protective cover, rainwater and impurities are effectively prevented from entering the interior through the gap between the micro switch protective cover and the rainproof edge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of the operation of the opening and closing position confirmation device provided by the present invention; Figure 2 A schematic diagram of a position signal device in a switch opening and closing position confirmation device provided by the present invention; Figure 3 A side view of a position signal device in the opening and closing position confirmation device provided by the present invention; Figure 4 A cross-sectional view of a position signal device in a switch opening and closing position confirmation device provided by the present invention; Figure 5 A schematic diagram of the installation of a transition arm in the opening and closing position confirmation device provided by the present invention; Wherein: 1. bottom plate; 2. connecting block; 3. fixing block; 4. mounting piece; 5. connecting mechanism crank arm; 501. clamping screw; 502. main body input shaft; 6. transition crank arm; 7. roller; 8. position signal device; 801. first signal component; 802. second signal component; 9. one-way air valve; 10. reset spring; 11. rain cover; 12. drive block; 13. limit rod; 14. transition plate; 1401. first transition plate; 1402. second transition plate; 15. micro switch protective cover; 16. bolt; 17. travel switch; 18. silicone pad; 19. cover plate; 20. flat washer; 21. spring washer; 22. pressure plate 22. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. 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.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0023] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply 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. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0024] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 connection 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.

[0027] The advantage of one-button sequential control is that it does not require operators to write operation tickets on site, does not require plate simulation, and does not require the first five checks of conventional substation operations, which saves operation time. In one-button sequential control, the main criterion for double confirmation of the disconnector position adopts the position signal of the double auxiliary contacts of closing and opening. The auxiliary criterion can use the opening and closing position indication signal that is not homologous to the double auxiliary contacts of closing and opening, such as micro switch signals, magnetic induction signals, etc., and can also be configured with a video analysis terminal, and image recognition based on a deep learning algorithm can be performed to realize the one-button sequential control double confirmation auxiliary criterion. As a result, one-button sequential control has derived mainstream solutions such as video double confirmation type, micro switch double confirmation type, and magnetic induction double confirmation type.

[0028] Among them, the video dual confirmation type uses video surveillance intelligent recognition technology to identify the operating status of substation equipment. The camera captures the real-time operating status of the disconnector, and transmits the video image of the relevant object to the image processing server. Based on fuzzy recognition, deep learning, image recognition and other algorithms, the characteristic parameters of the relevant parts of the disconnector are analyzed to achieve the purpose of identifying, judging and studying the status of substation equipment.

[0029] The double confirmation type of micro switch is to install the micro switch sensor between the moving part and the fixed part of the transmission mechanism in the disconnector mechanism box, or install it near the position side of the disconnector body. When the moving part of the transmission mechanism is in place, it acts on the action reed to quickly connect the moving and static positions and upload the position signal. For GIS equipment, the micro switch is generally installed on the rotating shaft of the internal mechanism of the mechanism box. The micro switch position signal is directly connected to the measurement and control device or intelligent terminal through the hard node output and uploaded to the station control layer network.

[0030] The magnetic induction double confirmation type is to install a magnetic induction device on the transmission part of the isolating switch. The change of the relative position of the isolating switch will cause the magnetic field to change and output a signal.

[0031] In the specific implementation process of the above three solutions, most of them are confirmation devices composed of a mounting plate, a rain cover, a micro switch and a crank arm. The GIS connection mechanism drives the crank arm to rotate, and the crank arm presses the micro switch lever to switch and send out a second set of position signals. However, during the application process, on the one hand, due to structural factors, the existing crank arm cannot accurately contact the micro switch lever, and there is intermittence in the signal acquisition process; on the other hand, in order to obtain a reliable second position signal, the existing technology installs the confirmation device outdoors. Since the rain cover is a half-enclosed structure, there is a risk of water ingress due to rain during the use of the confirmation device, resulting in failure to obtain the second position signal. In order to solve the above technical defects, the inventor provides a device for confirming the opening and closing positions and a substation.

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings: like Figure 1-Figure 5As shown, the first aspect of the embodiment of the present invention provides a device for confirming the position of a switch opening and closing, which includes a base plate 1, which is a U-shaped structure, and a mounting member 4 is provided at the opening of the base plate 1, and the mounting member 4 is preferably a disc, and connecting blocks 2 are installed on the top of both ends of the opening of the base plate 1, and a fixing block 3 is installed on the top of the connecting block 2, and the fixing block 3 is connected to the mounting member 4 by screws; a connecting mechanism crank arm 5 is rotatably connected to the center of the mounting member 4, and the connecting mechanism crank arm 5 is used for an external disconnector operating mechanism on the one hand, and for connecting a transition crank arm 6 on the other hand; a main body input shaft 502 is installed on the connecting mechanism crank arm 5, and a circular hole is opened at one end of the transition crank arm 6, and the circular hole is sleeved on the outside of the main body input shaft 502, so that the bottom of the transition crank arm 6 is tightly fitted with the bottom of the connecting mechanism crank arm 5, and secondly, the end of the clamping screw 501 is tightened with the top of the main body input shaft 502 The transition crank arm 6 is fixedly connected with the connecting mechanism crank arm 5; a roller 7 is provided on the other end of the transition crank arm 6, and the first signal component 801 and the second signal component 802 are symmetrically arranged on the blocking end of the bottom plate 1, and a sealing component is provided in the first signal component 801 and the second signal component 802; wherein, the first signal component 801 is a closing component, and the second signal component 802 is an opening component. When the closing or opening position is confirmed, the connecting mechanism crank arm 5 is driven to rotate by the isolating switch operating mechanism, and the connecting mechanism crank arm 5 drives the transition crank arm 6 to rotate during the rotation process, so that the roller 7 contacts with the first signal component 801 or the second signal component 802, and when the roller 7 contacts with the first signal component 801, the closing signal of the position signal device 8 is received, and when the roller 7 contacts with the second signal component 802, the opening signal of the position signal device 8 is received. When the switch opening and closing position confirmation device is used, since the transition arm 6 is installed on the connecting mechanism arm 5, not only the matching distance between the first signal component 801 and the second signal component 802 is shortened, but also precise contact with the first and second signal components 802 can be achieved, thereby improving the reliability of position signal acquisition; secondly, by installing a sealing component in the first and second signal components 8, when the switch opening and closing confirmation device is installed outdoors for use, the sealing component can effectively block the entry of external rainwater or impurities, thereby ensuring the safe operation of the first and second signal components 802.

[0033] Furthermore, if Figure 1 and Figure 5As shown, since the main body input shaft 502 is installed in the middle of the connecting mechanism crank arm 5, the transition crank arm 6 is divided into a fixed end and a clamping end, and the fixed end of the transition crank arm 6 is connected to the main body input shaft 502 by a clamping screw 501, and the two opposite sides of the clamping end of the transition crank arm 6 are provided with a limit plate, which fits with the outer side of the connecting mechanism crank arm 5 to prevent the transition crank arm 6 from separating from the connecting mechanism crank arm 5 during rotation. Among them, the fixed end of the transition crank arm 6 is a plate-like structure, which can better fit closely with the surface of the connecting mechanism crank arm 5, thereby improving the firmness of the fixation between the two.

[0034] like Figure 2 , Figure 3 and Figure 4 As shown, the first signal component 801 and the second signal component 802 both include a micro switch protective cover 15, in which a travel switch 17 and a sealing component are arranged, on which a pressure plate 22 and a transition plate 14 are mounted, and the pressure plate 22 is used to press the travel switch 17; the sealing component is in contact with the transition plate 14, and the transition plate 14 is connected to a limit rod 13 by a bolt 16, and the end of the limit rod 13 extends to the outside of the micro switch protective cover 15 and is provided with a rainproof edge, on which a rain shield 11 is connected, and a driving block 12 is mounted on the top of the rain shield 11. When the isolating switch operating mechanism drives the transition crank arm 6 to rotate, the roller 7 contacts the two ends and the middle part of the driving block 12. When contacting the middle part of the driving block 12, the driving block 12 drives the rain shield 11 to move toward the end close to the rainproof edge, so that the rain shield 11 completely covers the rainproof edge; at the same time, the rain shield 11 uses the limit rod 13 to drive the transition plate 14 to collide with the pressure plate 22, so that the pressure plate 22 presses the lever of the travel switch 17 to complete the switching process.

[0035] like Figure 3 and Figure 4 As shown, the sealing assembly includes a silicone pad 18, a cover plate 19 is provided on the top of the micro switch protection cover 15, and the silicone pad 18 is arranged at the bottom of the cover plate 19 and on the side wall of the micro switch protection cover 15 close to the limit rod 13, effectively preventing rainwater and impurities from entering the interior through the gap between the micro switch protection cover 15 and the rainproof edge. In addition, the rain shield 11 in this embodiment is a structure with one end open and the other end blocked, and the inner wall of the open end of the rain shield 11 is tightly fitted with the outer wall of the rainproof edge.

[0036] In this embodiment, a return spring 10 is installed at one end of the limit rod 13 away from the micro switch protection cover 15. The transition plate 14 includes a first transition plate 1401 and a second transition plate 1402 , which are spaced apart and connected to each other via a limit rod 13 ; in addition, a one-way air valve 9 , a flat washer 20 and a spring washer 21 are provided on the micro switch protection cover 15 .

[0037] A second aspect of an embodiment of the present invention provides a substation, in which an isolating switch operating mechanism is installed. The isolating switch operating mechanism is installed with the above-mentioned opening and closing position confirmation device to confirm the opening or closing position.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit its protection scope. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that after reading the present invention, those skilled in the art can still make various changes, modifications or equivalent substitutions to the specific implementation methods of the invention, but these changes, modifications or equivalent substitutions are all within the protection scope of the pending claims of the invention.

Claims

1. A device for confirming the position of a switch, characterized in that: include: A base plate (1) is provided with a mounting member (4), the mounting member (4) being rotatably connected to a connecting mechanism crank arm (5), the connecting mechanism crank arm (5) being externally connected to an isolating switch operating mechanism; A transition crank arm (6), one end of which is connected to the connecting mechanism crank arm (5), and the other end of which is provided with a roller (7); A first signal component (801) and a second signal component (802) are arranged on the bottom plate (1), and a sealing component is provided in each of the first signal component (801) and the second signal component (802); When the closing or opening position is confirmed, the isolating switch operating mechanism drives the transition arm (6) to rotate so that the roller (7) contacts the first signal component (801) or the second signal component (802).

2. The device according to claim 1, characterized in that A main body input shaft (502) is installed in the middle of the connecting mechanism crank arm (5), and the transition crank arm (6) comprises a fixed end and a clamping end, and the fixed end is connected to the main body input shaft (502) via a clamping screw (501); Limiting plates are provided on opposite sides of the clamping end, and the limiting plates are fitted to the outer side of the connecting mechanism crank arm (5).

3. The device according to claim 2, characterized in that The fixed end is a plate-shaped structure.

4. The device according to claim 1, characterized in that The first signal component (801) and the second signal component (802) both comprise a micro switch protection cover (15), wherein a travel switch (17) and a sealing component are provided in the micro switch protection cover (15); A pressure plate 22 and a transition plate (14) are mounted on the travel switch (17), and the sealing assembly is in contact with the transition plate (14); The transition plate (14) is connected to the limit rod (13) via a bolt (16); the end of the limit rod (13) extends to the outside of the micro switch protection cover (15) and is provided with a rainproof edge; the rainproof edge is connected to a rain shield (11); and a driving block (12) is installed on the top of the rain shield (11).

5. The device according to claim 4, characterized in that The sealing assembly comprises a silicone pad (18), a cover plate (19) is provided on the top of the micro switch protection cover (15), and the silicone pad (18) is arranged on the bottom of the cover plate (19) and on the side wall of the micro switch protection cover (15) close to the limit rod (13).

6. The device according to claim 4, characterized in that The rain shield (11) is a structure with one end open and the other end closed, and the inner wall of the open end of the rain shield (11) fits with the outer wall of the rainproof edge.

7. The device according to claim 4, characterized in that A return spring (10) is mounted on one end of the limit rod (13) away from the micro switch protection cover (15).

8. The device according to claim 4, characterized in that The transition plate (14) comprises a first transition plate (1401) and a second transition plate (1402); the first transition plate (1401) and the second transition plate (1402) are arranged with an interval therebetween and are connected to each other via a limiting rod (13).

9. The device according to claim 4, characterized in that A one-way ventilation valve (9) is provided on the micro switch protection cover (15).

10. A substation, wherein an isolating switch operating mechanism is installed in the substation, characterized in that: The disconnector operating mechanism is equipped with an opening and closing position confirmation device as described in any one of claims 1 to 9.

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