Centrally installed switchgear PT handcart with pressure relief channel

Abstract

The utility model discloses a centrally installed switchgear PT handcart with a pressure relief channel, and relates to the technical field of PT handcarts, the centrally installed switchgear PT handcart comprises a handcart body and a pressure relief mechanism, the handcart body comprises a bottom plate, the top of the bottom plate is provided with a voltage transformer, the voltage transformer is electrically connected with an internal electrical element of a centrally installed switchgear, and the pressure relief mechanism is arranged on the bottom plate. A connecting frame is arranged at the position, close to the left side, of the upper surface of the bottom plate, a pressure relief mechanism is arranged above the connecting frame and comprises a pressure relief pipeline, and a pressure sensor is arranged on the inner surface of the pressure relief pipeline and located at the input end. According to the scheme, the voltage of components in the centrally installed switchgear is detected through the voltage transformer, and when the voltage is overloaded, the protection device is triggered to cut off circuit connection in time, so that the purpose of protecting the circuit is achieved; the gas pressure in the centrally installed switchgear is monitored through the pressure sensor, and when the monitored pressure is higher than a normal value, the pressure sensor controls the first motor and the second motor to be started at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of PT trolleys, in particular to a central cabinet PT trolley with a pressure relief channel. Background Art

[0002] The center cabinet PT trolley is a device used in power systems to measure, protect and control the operation of power transformers. The PT trolley is usually a special tool for transporting and installing voltage transformers in power systems.

[0003] PT refers to voltage transformer, which is a device that converts high voltage into low voltage. The main function of PT is overvoltage protection. PT can be used to detect overvoltage conditions in the power system. When voltage overload is detected, PT will trigger the protection device to cut off the faulty circuit.

[0004] When a short circuit occurs in electrical equipment, the current will increase rapidly, causing the resistance inside the equipment to increase and the voltage to drop, thereby generating a large amount of heat and gas, which in turn causes a high pressure to form inside the central cabinet. These high-pressure gases can easily damage the components of the electrical equipment.

[0005] In order to avoid the above situation, the utility model provides a central cabinet PT trolley with a pressure relief channel to solve the above problem. Utility Model Content

[0006] In order to solve the above technical problems, a center cabinet PT trolley with a pressure relief channel is provided. This technical solution solves the problem proposed in the above background technology that when a short circuit occurs in the electrical equipment inside the center cabinet, the current will increase rapidly, causing the resistance inside the equipment to increase and the voltage to drop, thereby generating a large amount of heat and gas, which in turn causes a large pressure to form inside the center cabinet. These high-pressure gases can easily cause damage to the components of the electrical equipment.

[0007] To achieve the above purpose, the technical solution adopted by the utility model is: a PT trolley with a central cabinet having a pressure relief channel, comprising a trolley body and a pressure relief mechanism, the trolley body comprising a bottom plate, a voltage transformer is installed on the top of the bottom plate, the voltage transformer is electrically connected to the internal electrical components of the central cabinet, a connecting frame is provided at the left position of the upper surface of the bottom plate, a pressure relief mechanism is arranged above the connecting frame, the pressure relief mechanism comprises a pressure relief pipeline, a pressure sensor is provided on the inner surface of the pressure relief pipeline and at the input end position, a mounting frame is fixedly connected to the upper position of the inner surface of the pressure relief pipeline, a first motor is installed on the top of the mounting frame, the output end of the first motor passes through the surface of the mounting frame and is fixedly connected to the exhaust fan, a mounting block is installed at the lower position of the inner surface of the pressure relief pipeline, a mounting groove is opened at the upper position of the left side of the interior of the mounting block, a second motor is installed inside the mounting groove, the output end of the second motor passes through the surface of the mounting groove and is fixedly connected to the screw, a slide groove is opened at the lower position of the left side of the interior of the mounting block, and a limiting groove is opened on the right side of the slide groove.

[0008] Optionally, a cart handle is provided at the right position of the top of the base plate, and rollers are connected to the four corners of the bottom of the base plate.

[0009] Optionally, a moving block is threadedly connected to the surface of the screw rod, the moving block is slidably connected to the slide groove, and the right side of the moving block is connected to a first connecting block.

[0010] Optionally, the first connecting block is transmission-connected to the connecting rod via a connecting shaft, and the first connecting block is slidably connected to the limiting groove.

[0011] Optionally, one end of the connecting rod away from the first connecting block is transmission-connected to the second connecting block via a connecting shaft.

[0012] Optionally, a third connecting block is connected to the inner surface of the pressure relief pipe at a position corresponding to the mounting block, and the third connecting block is transmission-connected to the closing plate via a connecting shaft.

[0013] Optionally, the surface of the closing plate is fixedly connected to the second connecting block, and the input end of the pressure relief pipe is fixed and communicated with the pressure relief port of the central cabinet by bolts.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] This solution detects the voltage of components inside the central cabinet through a voltage transformer. When the voltage is overloaded, the protection device is triggered to promptly block the circuit connection, thereby achieving the purpose of protecting the circuit. When a short circuit occurs in the electrical equipment inside the central cabinet, a large amount of heat and gas are generated, which are pressure-relieved through the pressure relief mechanism. Specifically, the gas pressure inside the central cabinet is monitored by a pressure sensor. When the monitored pressure is higher than the normal value, the pressure sensor controls the first motor and the second motor to start at the same time. The first motor drives the exhaust fan to rotate, thereby accelerating the flow rate of the compressed gas. The second motor, the screw, the moving block, the first connecting block, the second connecting block and the connecting rod drive the closing plate to swing, thereby opening the closing plate and smoothly discharging the compressed gas out of the central cabinet, thereby effectively improving the pressure relief effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a front view of the utility model;

[0018] Figure 3 It is a cross-sectional view of the pressure relief mechanism in the utility model;

[0019] Figure 4 for Figure 3 A local enlarged schematic diagram of point A in the middle.

[0020] Description of reference numerals:

[0021] 1. Cart body; 11. Bottom plate; 12. Cart handle; 13. Roller; 14. Voltage transformer; 15. Connecting frame;

[0022] 2. Center cabinet;

[0023] 3. Pressure relief mechanism; 31. Pressure relief pipe; 32. Pressure sensor; 33. Mounting bracket; 34. First motor; 35. Exhaust fan; 36. Mounting slot; 37. Second motor; 38. Screw; 39. Slide slot; 310. Limiting slot; 311. Moving block; 312. First connecting block; 313. Connecting rod; 314. Second connecting block; 315. Third connecting block; 316. Closing plate. DETAILED DESCRIPTION

[0024] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0025] Reference Figure 1 and Figure 2As shown, a PT trolley for a central cabinet with a pressure relief channel includes a trolley body 1 and a pressure relief mechanism 3. The trolley body 1 includes a bottom plate 11. A trolley handle 12 is provided at the right position on the top of the bottom plate 11. Rollers 13 are connected to the four corners of the bottom of the bottom plate 11. The staff can move the trolley body 1 to the side of the central cabinet 2 by using the trolley handle 12 and the roller 13. A voltage transformer 14 is installed on the top of the bottom plate 11. The voltage transformer 14 is electrically connected to the internal electrical components of the central cabinet 2. The voltage of the internal components of the central cabinet 2 is detected by the voltage transformer 14. When the voltage is overloaded, the protection device is triggered to block the circuit connection in time to achieve the purpose of protecting the circuit.

[0026] Further, such as Figure 3 and Figure 4 As shown, a connecting frame 15 is provided at the left position of the upper surface of the bottom plate 11, and a pressure relief mechanism 3 is provided above the connecting frame 15. The pressure relief mechanism 3 includes a pressure relief pipe 31, and a pressure sensor 32 is provided on the inner surface of the pressure relief pipe 31 and at the input end position. The gas pressure inside the central cabinet 2 is monitored by the pressure sensor 32. When the monitored pressure is higher than the normal value, the pressure sensor 32 controls the first motor 34 and the second motor 37 to start at the same time. A mounting frame 33 is fixedly connected to the upper position of the inner surface of the pressure relief pipe 31, and a first motor 34 is installed on the top of the mounting frame 33. The output end of the first motor 34 passes through the surface of the mounting frame 33 and is fixedly connected to the exhaust fan 35. When the first motor 34 is started, the output end of the first motor 34 drives the exhaust fan 35 to rotate, thereby accelerating the flow speed of the compressed gas in the pressure relief pipe 31 and improving the pressure relief efficiency.

[0027] Reference Figure 4As shown, a mounting block is provided at a lower position on the inner surface of the pressure relief pipe 31, a mounting groove 36 is provided at an upper position on the left side of the interior of the mounting block, a second motor 37 is installed inside the mounting groove 36, an output end of the second motor 37 passes through the surface of the mounting groove 36 and is fixedly connected to a screw 38, a slide groove 39 is provided at a lower position on the left side of the interior of the mounting block, a limiting groove 310 is provided on the right side of the slide groove 39, a moving block 311 is threadedly connected to the surface of the screw 38, the moving block 311 is slidably connected to the slide groove 39, a first connecting block 312 is connected to the right side of the moving block 311, the first connecting block 312 is transmission-connected to a connecting rod 313 through a connecting shaft, the first connecting block 312 is slidably connected to the limiting groove 310, and one end of the connecting rod 313 away from the first connecting block 312 is connected to the first connecting block 312 through a connecting shaft. The second connecting block 314 is connected in transmission, and the inner surface of the pressure relief pipe 31 is connected to the third connecting block 315 at the corresponding position of the mounting block. The third connecting block 315 is connected in transmission to the closing plate 316 through a connecting shaft. The surface of the closing plate 316 is fixedly connected to the second connecting block 314. The input end of the pressure relief pipe 31 is fixed and connected to the pressure relief port of the central cabinet 2 by bolts. The second motor 37 is started, and the output end of the second motor 37 drives the screw 38 to rotate, thereby driving the moving block 311 to move up and down, and then driving one end of the closing plate 316 to swing along the inside of the third connecting block 315 through the first connecting block 312, the connecting rod 313 and the second connecting block 314, so that the closing plate 316 is opened, and the compressed gas is smoothly discharged out of the central cabinet 2, effectively improving the pressure relief effect.

[0028] The working principle of the utility model is as follows: first, the trolley body 1 is moved to the side of the central cabinet 2, and the input end of the pressure relief pipe 31 is connected and fixed to the pressure relief port of the central cabinet 2, and then the voltage of the components inside the central cabinet 2 is detected by the voltage transformer 14. When the voltage is overloaded, the protection device is triggered to block the circuit connection in time. At this time, a short circuit fault occurs in the electrical equipment inside the central cabinet 2, and a large amount of heat and gas are generated. The pressure is relieved through the pressure relief mechanism 3. Specifically, the gas pressure inside the central cabinet 2 is monitored by the pressure sensor 32. When the monitored pressure is higher than the normal value, the pressure sensor 3 The first motor 34 and the second motor 37 are controlled to start simultaneously, the output end of the first motor 34 drives the exhaust fan 35 to rotate, thereby accelerating the flow speed of the compressed gas in the pressure relief pipe 31, the output end of the second motor 37 drives the screw rod 38 to rotate, thereby driving the moving block 311 to move up and down, and then driving one end of the closing plate 316 to swing along the inside of the third connecting block 315 through the first connecting block 312, the connecting rod 313 and the second connecting block 314, so that the closing plate 316 is opened, and the pressurized gas is smoothly discharged outside the central cabinet 2, completing the pressure relief treatment of the central cabinet 2.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A central cabinet PT trolley with a pressure relief channel, characterized in that: The handcart body (1) comprises a handcart body (1) and a pressure relief mechanism (3), wherein the handcart body (1) comprises a bottom plate (11), a voltage transformer (14) is installed on the top of the bottom plate (11), and the voltage transformer (14) is electrically connected to the internal electrical components of the central cabinet (2), a connecting frame (15) is provided at the left position of the upper surface of the bottom plate (11), a pressure relief mechanism (3) is arranged above the connecting frame (15), and the pressure relief mechanism (3) comprises a pressure relief pipe (31), a pressure sensor (32) is arranged on the inner surface of the pressure relief pipe (31) and at the input end position, and a mounting frame (33) is fixedly connected to the upper position of the inner surface of the pressure relief pipe (31). ), a first motor (34) is installed on the top of the mounting frame (33), the output end of the first motor (34) passes through the surface of the mounting frame (33) and is fixedly connected to the exhaust fan (35), a mounting block is installed at a lower position on the inner surface of the pressure relief pipe (31), a mounting groove (36) is provided at an upper position on the left side of the interior of the mounting block, a second motor (37) is installed inside the mounting groove (36), the output end of the second motor (37) passes through the surface of the mounting groove (36) and is fixedly connected to the screw rod (38), a slide groove (39) is provided at a lower position on the left side of the interior of the mounting block, and a limiting groove (310) is provided on the right side of the slide groove (39).

2. A central cabinet PT trolley with a pressure relief channel according to claim 1, characterized in that: A cart handle (12) is provided at the right position of the top of the bottom plate (11), and rollers (13) are connected to the four corners of the bottom of the bottom plate (11).

3. A central cabinet PT trolley with a pressure relief channel according to claim 1, characterized in that: A moving block (311) is threadedly connected to the surface of the screw rod (38), the moving block (311) is slidably connected to the slide groove (39), and the right side of the moving block (311) is connected to a first connecting block (312).

4. A central cabinet PT trolley with a pressure relief channel according to claim 3, characterized in that: The first connecting block (312) is transmission-connected to the connecting rod (313) via a connecting shaft, and the first connecting block (312) is slidably connected to the limiting groove (310).

5. A central cabinet PT trolley with a pressure relief channel according to claim 4, characterized in that: One end of the connecting rod (313) away from the first connecting block (312) is transmission-connected to the second connecting block (314) via a connecting shaft.

6. The central cabinet PT trolley with a pressure relief channel according to claim 1, characterized in that: A third connection block (315) is connected to the inner surface of the pressure relief pipe (31) at a position corresponding to the mounting block, and the third connection block (315) is transmission-connected to the closing plate (316) via a connecting shaft.

7. A central cabinet PT trolley with a pressure relief channel according to claim 6, characterized in that: The surface of the closing plate (316) is fixedly connected to the second connecting block (314), and the input end of the pressure relief pipe (31) is fixed and communicated with the pressure relief port of the central cabinet (2) by means of bolts.

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