Automatic electricity testing shaking insulation trolley for 10KV high-voltage switch cabinet

Abstract

The utility model relates to the technical field of electricity testing handcarts, in particular to an automatic electricity testing shaking insulation trolley for a 10KV high-voltage switch cabinet. The operation device comprises a rectangular panel, the center of the rectangular panel is provided with a display mechanism, the left side of the rectangular panel is provided with a megger placing groove, and the upper part of the rectangular panel is provided with a plurality of sampling ports; a handle extends backwards along the edge of the rectangular panel, and the tail end of the handle is connected with the sampling mechanism through an electromagnetic lock; the sampling mechanism is in butt joint with each sampling port; the electricity testing device comprises an electricity testing contact arm horizontally arranged at the lower part of the rectangular panel, a tool bit is arranged above the electricity testing contact arm, and the tool bit is directly connected with the conductor and led out to a sampling port; a high-voltage sensor is arranged below the tool bit, and a tulip contact arranged at the front end of the high-voltage sensor is connected with the static contact and led out to a display mechanism; by improving the operation device and the electricity testing device, the operation behavior is far away from the long-term electrified upper opening contact in the switch chamber, so that the personnel are ensured to be in a safe distance, and the accident risk is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of voltage testing trolley, in particular to an automatic voltage testing and insulation resistance measuring trolley for 10KV high-voltage switch cabinets. Background Art

[0002] When performing voltage testing and insulation resistance measuring on 10kV high-voltage switch cabinets, generally, the upper and lower static contact baffles are opened in the switch room, and after the lower port is tested for no voltage, a 2500V megohmmeter is used to measure the insulation resistance at the lower port contact. This traditional method of voltage testing and insulation resistance measuring requires auxiliary tools to be inserted into the switch room, and the operation steps are cumbersome and require personnel cooperation. Since the upper busbar part is energized for a long time, there are relatively large risks. Considering the safety issues during the operation process, corresponding mechanisms are designed to ensure that the operators maintain a safe distance from the energized parts. For example, Chinese Patent Publication No. CN102270814A discloses an incoming line voltage testing and grounding trolley, which has a live display on the panel and a grounding interlock mechanism is provided on the bracket. However, this solution still has deficiencies in aspects such as sampling and display mechanisms, electromagnetic locks and operation convenience, the positions of the voltage testing contact arm and the high-voltage sensor, and the operation distance. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and provide an automatic voltage testing and insulation resistance measuring trolley for 10KV high-voltage switch cabinets.

[0004] The technical solution adopted by the utility model is as follows:

[0005] An automatic voltage testing and insulation resistance measuring trolley for 10KV high-voltage switch cabinets, comprising a vehicle body, an operating device arranged on the front of the vehicle body, and a voltage testing device arranged on the back of the vehicle body, wherein:

[0006] The operating device includes a rectangular panel vertically arranged on the vehicle body, a display mechanism is arranged at the center of the rectangular panel, a megohmmeter placement groove is arranged on the left side of the rectangular panel, and a plurality of sampling ports are arranged on the upper part of the rectangular panel; an aviation plug is movably installed at the top of the rectangular panel; a handle extends backward along the edge of the rectangular panel, and the end of the handle is connected to a sampling mechanism through an electromagnetic lock; the sampling mechanism is docked with each sampling port;

[0007] The voltage testing device includes a voltage testing contact arm horizontally arranged below the rectangular panel, a knife head is arranged above the voltage testing contact arm, the knife head is directly connected to a conductor and led out to the sampling port; a high-voltage sensor is arranged below the knife head, and a plum blossom contact arranged at the front end of the high-voltage sensor is connected to the static contact and led out to the display mechanism.

[0008] This technical solution improves the operating device and the voltage testing device, enabling the operating behavior to be far away from the upper contact that is energized for a long time in the switch room, ensuring that personnel are at a safe distance and reducing the accident risk; after using the automatic voltage testing and insulation testing trolley, only one person is required and the operations are simple actions such as observing, rocking, and pressing buttons, which are convenient and easy to perform. Among them, the display mechanism is a liquid crystal display screen or an LED display screen, which is used to display the results of voltage testing and insulation testing; the megger placement groove is used to store the megger, facilitating the operator to access it at any time; the sampling port is used to connect the sampling mechanism and transmit the collected voltage or current signal to the display mechanism for analysis and processing; the aviation plug is a power plug or a signal plug, which is used to connect an external power source or signal source to provide power or transmit signals to the trolley; the electromagnetic lock at the end of the handle is used to control the action of the sampling mechanism. When the handle is pressed or pulled, the electromagnetic lock will release or lock the sampling mechanism, making it dock with or separate from the sampling port; the knife head on the voltage testing contact arm is directly connected to the conductor and is used to contact the energized part inside the high-voltage switch cabinet; the high-voltage sensor below the knife head is used to detect the voltage signal. When the knife head touches the energized part, the high-voltage sensor will sense the voltage signal and transmit the signal to the display mechanism or the control system through the plum blossom contact; the walking mechanism at the bottom of the trolley is rocked into the working position of the high-voltage switch cabinet through the rocking handle. The front baffle will automatically push open the static contact protection baffle at the lower opening, while the upper opening remains closed due to being energized for a long time. Subsequently, the knife head on the voltage testing contact arm is tightly connected to the lower static contact, and the high-voltage sensor starts to work. On the premise of ensuring safety, open the aviation plug on the rectangular panel to prepare for the subsequent insulation resistance testing; take out the megger from the megger placement groove to prepare for the test. At this time, operate the sampling mechanism through the handle. Since the end of the handle is connected to the sampling mechanism through the electromagnetic lock, the operation process is both stable and safe; push the handle to the upper gear position (mechanism closed position), and the sampling mechanism will accurately dock with the sampling port. The sampling port is made of a horn-shaped insulating material and is connected to the sampling mechanism through a high-voltage sheath passing through the wall to ensure the safety and accuracy of the sampling process; before the formal insulation resistance testing, use a handheld high-voltage voltage tester to perform a secondary voltage test on the sampling port, and only start the test after confirming again that there is no voltage. During the test process, the operator can observe the display mechanism in real time to obtain the latest voltage testing information. After the test is completed, put the megger back in place, separate the sampling mechanism from the sampling port through the handle, and then place the handle in the lower gear position (mechanism open position).

[0009] In addition, according to the above-mentioned 10KV high-voltage switch cabinet automatic voltage testing and insulation testing trolley of the present utility model, it can also have the following additional technical features:

[0010] According to an embodiment of the present utility model, a walking mechanism is provided at the bottom of the vehicle body. The walking mechanism is rocked in or out through a rocking handle and is used to load the operating device.

[0011] In this technical solution, when the crank is shaken, the rotational motion is converted into linear motion or rotational motion through a transmission mechanism (such as gears, chains, etc.), thereby driving the wheels of the traveling mechanism to rotate.

[0012] According to an embodiment of the present invention, the front baffle of the traveling mechanism is used to push open the static contact protection baffle at the lower opening, and the upper opening is a live baffle.

[0013] In this technical solution, during the movement of the traveling mechanism, the front baffle automatically pushes open the static contact protection baffle at the lower opening; when the traveling mechanism moves forward, the front baffle is subjected to a driving force, pushing mechanisms such as connecting rods or sliders to generate sufficient displacement to push open the static contact protection baffle; the upper opening is a live baffle, which is used to prevent operators from accidentally touching the live part and ensure electrical safety during maintenance, inspection or operation; when the trolley or operating device approaches the high-voltage switchgear, the presence of the live baffle at the upper opening will play a warning and blocking role to prevent electric shock accidents caused by misoperation. It is necessary to ensure that the baffle can be pushed open while avoiding excessive impact and stress on the mechanism. During the process of pushing open the baffle, the traveling mechanism needs to remain stable and avoid excessive vibration or shaking. At the same time, each component in the mechanism needs to have sufficient strength and stiffness to ensure stable performance during long-term use.

[0014] According to an embodiment of the present invention, a fixed or temporarily stored megger is placed in the megger placement groove.

[0015] According to an embodiment of the present invention, the sampling port is made of horn-shaped insulating material and is connected to the sampling mechanism through a high-voltage sheath passing through the wall. Before insulating resistance measurement, use a high-voltage electroscope to check the electricity.

[0016] In this technical solution, the horn-shaped sampling port not only increases the electrical isolation between the sampling port and the surrounding environment, reduces the risk of electric leakage in a high-voltage environment, and ensures the safety of the sampling process; the high-voltage sheath has excellent electrical insulation performance, which can effectively isolate the high-voltage electric field and prevent current from leaking through unexpected paths, thereby ensuring the safety and accuracy of the sampling process.

[0017] According to an embodiment of the present invention, the handle is made of insulating material, the upper gear position is the closed position of the mechanism, and the lower gear position is the open position of the mechanism.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) Improve the operating device and the electricity-checking device, so that the operating behavior is far away from the upper contact that is long-term live in the switch room, ensure that the personnel are at a safe distance, and reduce the accident risk;

[0020] (2) The automatic electrical testing and shaking insulation trolley only requires one person to operate, and the operation only requires simple actions such as observation, shaking, and pressing buttons, which is convenient and easy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional view of the utility model.

[0022] Figure 2 It is the front view of the utility model.

[0023] In the figure: 1. Traveling mechanism; 2. Display mechanism; 3. Measuring table placement slot; 4. Sampling port; 5. Handle; 6. Electromagnetic lock; 7. Aviation plug; 8. Cutting head; 9. High-voltage sensor. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1

[0026] like Figure 1 and Figure 2 As shown, this embodiment provides a 10KV high-voltage switch cabinet automatic electric test shaking insulation trolley, including a vehicle body, an operating device arranged on the front of the vehicle body, and an electric test device arranged on the back of the vehicle body, wherein:

[0027] The operating device comprises a rectangular panel vertically arranged on the vehicle body, a display mechanism 2 is arranged at the center of the rectangular panel, a megger placement slot 3 is arranged on the left side of the rectangular panel, and a plurality of sampling ports 4 are arranged on the upper part of the rectangular panel; a movable aviation plug 7 is arranged on the top of the rectangular panel; a handle 5 is arranged extending backward along the edge of the rectangular panel, and the end of the handle 5 is connected to the sampling mechanism through an electromagnetic lock 6; the sampling mechanism is connected to each sampling port 4;

[0028] The electrical testing device includes an electrical testing contact arm horizontally arranged at the lower part of the rectangular panel, a knife head 8 is arranged above the electrical testing contact arm, the knife head 8 is directly connected to the conductor and led to the sampling port 4; a high-voltage sensor 9 is arranged below the knife head 8, and a plum blossom contact arranged at the front end of the high-voltage sensor 9 is connected to the static contact and led to the display mechanism 2.

[0029] like Figure 1 and Figure 2As shown in the figure, this technical solution improves the operating device and the voltage verification device, so that the operating behavior is far away from the upper contact that is energized for a long time in the switch room, ensuring that personnel are at a safe distance and reducing the accident risk; after using the automatic voltage verification and insulation testing trolley, only one person is required and the operations are simple actions such as observation, shaking, and button pressing, which are convenient and easy to perform. Among them, the display mechanism 2 is a liquid crystal display screen or an LED display screen, which is used to display the results of voltage verification and insulation testing; the megohmmeter placement groove 3 is used to store the megohmmeter, facilitating the operator to access it at any time; the sampling port 4 is used to connect the sampling mechanism to transmit the collected voltage or current signal to the display mechanism 2 for analysis and processing; the aviation plug 7 is a power plug or a signal plug, which is used to connect an external power source or a signal source to provide power or transmit signals to the trolley; the electromagnetic lock 6 at the end of the handle 5 is used to control the action of the sampling mechanism. When the handle 5 is pressed or pulled, the electromagnetic lock 6 will release or lock the sampling mechanism, making it dock or separate from the sampling port 4; the knife head 8 on the voltage verification contact arm is directly connected to the conductor and is used to contact the energized part inside the high-voltage switch cabinet; the high-voltage sensor 9 below the knife head 8 is used to detect the voltage signal. When the knife head 8 touches the energized part, the high-voltage sensor 9 will sense the voltage signal and transmit the signal to the display mechanism 2 or the control system through the plum blossom contact; the walking mechanism 1 at the bottom of the trolley is shaken into or out of the working position of the high-voltage switch cabinet through a crank. The front baffle will automatically push open the static contact protection baffle at the lower port, while the upper port remains closed due to being energized for a long time. Subsequently, the knife head 8 on the voltage verification contact arm is tightly connected to the lower static contact, and the high-voltage sensor 9 starts to work. On the premise of ensuring safety, open the aviation plug 7 on the rectangular panel to prepare for the subsequent insulation resistance testing; take out the megohmmeter from the megohmmeter placement groove 3 to prepare for the test. At this time, operate the sampling mechanism through the handle 5. Since the end of the handle 5 is connected to the sampling mechanism through the electromagnetic lock 6, the operation process is both stable and safe; push the handle 5 to the upper gear position (mechanism closed position), and the sampling mechanism will accurately dock with the sampling port 4. The sampling port 4 is made of a horn-shaped insulating material and is connected to the sampling mechanism through a high-voltage sheath passing through the wall to ensure the safety and accuracy of the sampling process; before the formal insulation resistance testing, use a handheld high-voltage voltage detector to perform a secondary voltage verification on the sampling port 4, and only start the test after confirming again that there is no voltage. During the test process, the operator can observe the display mechanism 2 in real time to obtain the latest voltage verification information. After the test is completed, put the megohmmeter back in place, separate the sampling mechanism from the sampling port 4 through the handle 5, and then place the handle 5 in the lower gear position (mechanism open position).

[0030] In addition, according to the above-mentioned 10KV high-voltage switch cabinet automatic voltage verification and insulation testing trolley of the present invention, it can also have the following additional technical features:

[0031] According to an embodiment of the present invention, a walking mechanism 1 is provided at the bottom of the vehicle body. The walking mechanism 1 is shaken into or out of by a crank and is used to load the operating device.

[0032] In this technical solution, when the crank is shaken, the rotational motion is converted into linear motion or rotational motion through a transmission mechanism (such as gears, chains, etc.), thereby driving the wheels of the traveling mechanism 1 to rotate.

[0033] According to an embodiment of the present invention, the front baffle of the traveling mechanism 1 is used to push open the static contact protection baffle at the lower opening, and the upper opening is a live baffle.

[0034] In this technical solution, during the movement of the traveling mechanism 1, the front baffle automatically pushes open the static contact protection baffle at the lower opening; when the traveling mechanism 1 moves forward, the front baffle is subjected to a driving force, pushing mechanisms such as connecting rods or sliders to generate sufficient displacement to push open the static contact protection baffle; the upper opening is a live baffle, which is used to prevent operators from accidentally touching the live part and ensure electrical safety during maintenance, inspection, or operation; when the trolley or operating device approaches the high-voltage switchgear, the presence of the live baffle at the upper opening will play a warning and blocking role to prevent electric shock accidents caused by misoperation. It is necessary to ensure that the baffle can be pushed open while avoiding excessive impact and stress on the mechanism. During the process of pushing open the baffle, the traveling mechanism 1 needs to remain stable and avoid excessive vibration or shaking. At the same time, each component in the mechanism needs to have sufficient strength and stiffness to ensure stable performance during long-term use.

[0035] According to an embodiment of the present invention, a fixed or temporarily stored megger is placed inside the megger placement groove 3.

[0036] According to an embodiment of the present invention, the sampling port 4 is made of horn-shaped insulating material and is connected to the sampling mechanism through the high-voltage sheath passing through the wall. Before insulating resistance measurement, use a high-voltage electroscope to check for electricity.

[0037] In this technical solution, the horn-shaped sampling port 4 not only increases the electrical isolation between the sampling port 4 and the surrounding environment, reduces the risk of electric leakage in a high-voltage environment, and ensures the safety of the sampling process; the high-voltage sheath has excellent electrical insulation performance, can effectively isolate the high-voltage electric field, and prevent current from leaking through unexpected paths, thereby ensuring the safety and accuracy of the sampling process.

[0038] According to an embodiment of the present invention, the handle 5 is made of insulating material, with the upper position being the in-position of the mechanism and the lower position being the out-of-position of the mechanism.

[0039] The usage process of the above embodiment is as follows:

[0040] Such as Figure 1 And Figure 2As shown, the traveling mechanism 1 at the bottom of the vehicle body is swung into the working position of the high-voltage switchgear by a crank; the front baffle pushes open the static contact protection baffle at the lower opening, while the upper opening remains closed due to being energized for a long time; the knife head 8 on the live-line checking contact arm is connected to the static contact at the lower opening; the plum blossom contact at the front end of the high-voltage sensor 9 contacts the static contact, and the high-voltage signal is sensed and transmitted to the display mechanism 2 to show whether it is live currently; if it is live, the live-line display device will give an indication and lock the insulation swinging mechanism through the auxiliary contact to prevent insulation swinging operation under live conditions; open the aviation plug 7 installed movably on the rectangular panel to prepare for the next operation; take out the megohmmeter from the megohmmeter placement slot 3 and prepare to conduct an insulation resistance test; operate the sampling mechanism through the handle 5, and the end of the handle 5 is connected to the sampling mechanism through the electromagnetic lock 6 to ensure the safety of the operation; the upper gear position is the closed position of the mechanism. Push the handle 5 to the upper gear position to make the sampling mechanism dock with the sampling port 4; the sampling port 4 is made of horn-shaped insulating material and is connected to the sampling mechanism through a high-voltage sheath passing through the wall; use a handheld high-voltage live-line checker to conduct a secondary live-line check on the sampling port 4 to confirm that there is no voltage; after confirming no voltage, start using the megohmmeter to conduct an insulation resistance test; during the insulation resistance test, real-time live-line checking information can be obtained by observing the display mechanism 2; after the insulation resistance test operation is completed, put the megohmmeter back into the megohmmeter placement slot 3; separate the sampling mechanism from the sampling port 4 through the handle 5 and place the handle 5 in the lower gear position (mechanism open position); finally, swing the traveling mechanism 1 out of the high-voltage switchgear by the crank to complete the entire operation process.

[0041] Although the present invention has been described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, those of ordinary skill in the art can make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions should all fall within the scope of the present invention. / Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the said claims.

Claims

1. A 10KV high-voltage switch cabinet automatic electric testing and insulation trolley, characterized in that: The vehicle comprises a vehicle body, an operating device arranged on the front of the vehicle body, and an electrical testing device arranged on the back of the vehicle body, wherein: The operating device comprises a rectangular panel vertically arranged on a vehicle body, a display mechanism (2) is arranged at the center of the rectangular panel, a megohmmeter placement slot (3) is arranged on the left side of the rectangular panel, and a plurality of sampling ports (4) are arranged on the upper part of the rectangular panel; a movable aviation plug (7) is arranged on the top of the rectangular panel; a handle (5) is arranged extending backward along the edge of the rectangular panel, and the end of the handle (5) is connected to the sampling mechanism through an electromagnetic lock (6); the sampling mechanism is connected to each sampling port (4); The electric testing device comprises an electric testing contact arm horizontally arranged at the lower part of a rectangular panel, a knife head (8) is arranged above the electric testing contact arm, the knife head (8) is directly connected to a conductor and led to a sampling port (4); a high-voltage sensor (9) is arranged below the knife head (8), and a plum blossom contact arranged at the front end of the high-voltage sensor (9) is connected to a static contact and led to a display mechanism (2).

2. The 10KV high-voltage switch cabinet automatic electric testing and shaking insulation trolley as claimed in claim 1 is characterized in that: A running mechanism (1) is arranged at the bottom of the vehicle body, and the running mechanism (1) is shaken in or out by a crank and is used for loading an operating device.

3. The 10KV high-voltage switch cabinet automatic electric testing and shaking insulation trolley as claimed in claim 2 is characterized in that: The front baffle of the walking mechanism (1) is used to push open the static contact protection baffle at the lower opening, and the upper opening is a live baffle.

4. The 10KV high-voltage switch cabinet automatic electric testing and shaking insulation trolley as claimed in claim 1 is characterized in that: The megohmmeter placement slot (3) is internally provided with a fixed or temporarily stored megohmmeter.

5. The 10KV high-voltage switch cabinet automatic electric testing and shaking insulation trolley as claimed in claim 1 is characterized in that: The sampling port (4) is made of trumpet-shaped insulating material and is connected to the sampling mechanism through a high-voltage sheath penetrating the wall. A high-voltage tester is used to test the electricity before shaking the insulation.

6. The 10KV high-voltage switch cabinet automatic electric testing and shaking insulation trolley as claimed in claim 1 is characterized in that: The handle (5) is made of insulating material, the upper position is the mechanism closed position, and the lower position is the mechanism open position.

Images