Electric energy quality detection device for electric power system

Abstract

The invention discloses a power system power quality detection device, and relates to the technical field of power quality detection, the power system power quality detection device comprises a detection device body, and the top end and the bottom end of the detection device body are both provided with mounting plates; fixing frames are arranged above and below the detection device body, and an adjusting mechanism for adjusting the height of the detection device body is arranged at one end between the fixing frames; a fixing rod is arranged at the rear end of the detection device body, and a limiting mechanism used for protecting the wire is arranged above the fixing rod. According to the electric energy quality detection device for the electric power system, the position of a wire can be limited through mutual cooperation of the placement frame and the soft bag, the situation that the wire is loosened after being plugged is avoided, meanwhile, the connection position of the wire and the plugging port can be protected through the width of the placement frame and the supporting performance of the placement frame, and the practicability is high. And the condition that the joint of the plugging port and the wire is broken due to dragging caused by the weight of the wire is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of power quality detection, and specifically relates to a power quality detection device for a power system. Background Art

[0002] In the power grid, unbalanced three-phase loads, resonant grounding of the power system, etc. will generate negative sequence, and high-power rectifiers and non-linear devices, etc. will generate harmonics. The decline in power quality will lead to unstable power supply and the safe operation of electrical equipment. Therefore, it is necessary to detect it in time through a power quality detection device; when in use, since the traditional power quality detection device needs to connect many wires and perform stable detection during use, during the detection, the wire connections are prone to looseness, which in turn leads to deviation in the accuracy of the data during subsequent detection.

[0003] In order to overcome the above defects, a power quality monitoring device in the prior art one (a Chinese patent with the publication number CN221686458U and the publication date of September 10, 2024) relates to the technical field of power monitoring. Its structure includes a device housing; a micro control unit, a liquid crystal display module, a data freezing module, a communication module, a switching power supply module, a power pulse output module, and a power metering module are installed inside the device housing; among them, the display and interface ends of the liquid crystal display module, the communication module, the switching power supply module, and the power pulse output module are respectively arranged through the side of the device housing, and two protective frames are installed on the outer walls of both sides and the rear end of the device housing by screws; several cable fixers are installed on the two protective frames. The utility model stabilizes the connected cables by installing two protective frames on the cable connection side of the power quality monitoring device and cooperating with the cable fixers, avoiding the loosening of the cable joints when the power quality monitoring device moves. A power quality monitoring device in a stable detection state is conducive to the optimization and stability of power quality; in the prior art two (a Chinese patent with the publication number CN212965223U and the publication date of April 13, 2021) a power quality monitoring device includes a monitoring device body, and also includes a protective box and a line box. An opening is provided at the front end of the protective box, and a protective plate is connected at the opening. An operation port is provided on the protective plate, and a transparent operation plate is hinged at the operation port through a plurality of hinges. A plurality of protective strips are slidably connected inside the protective box, and the monitoring device body is clamped between the plurality of protective strips. The line box is connected to the rear end of the protective box. A plurality of mounting plates are connected to the outer side walls of the protective box and the line box. A plurality of mounting openings are provided on the rear end of the protective box and the side wall of the line box. Protective plugs are installed at the plurality of mounting openings, and a cross-shaped through hole is provided on the protective plugs. It has good protection performance, is not easily damaged or even destroyed, and at the same time is convenient for protecting and separately fixing a plurality of lines, with low potential safety hazards and high use reliability.

[0004] The above mechanism protects and limits the connected wires by using wire fixators or protective plugs. However, in actual use, the connection between the wire and the plug is prone to breakage due to the sagging of the wire, affecting the service life of the wire. Summary of the Invention

[0005] The purpose of the present invention is to provide a power system power quality detection device to solve the problem that the connection between the wire and the plug is prone to breakage due to the sagging of the wire, affecting the service life of the wire as mentioned in the above background technology.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A power system power quality detection device, including a detection device body, mounting plates are installed at both the top and bottom of the detection device body; fixing frames are arranged above and below the detection device body, and a regulating mechanism for adjusting the height of the detection device body is arranged at one end between the fixing frames; a fixing rod is arranged at the rear end of the detection device body, and a limiting mechanism for protecting the wire is arranged above the fixing rod. The limiting mechanism includes a gas guiding rod, and the gas guiding rod is arranged inside the fixing rod. Placement frames are arranged at the top of the gas guiding rod and the rear end of the detection device body.

[0007] Furthermore, the cross-section of the placement frame is semicircular, and the positions of the placement frames correspond to each other.

[0008] Furthermore, a soft bag is arranged inside the placement frame, and the outer side of the soft bag fits with the inner side of the placement frame. The cross-section of the soft bag is annular.

[0009] Furthermore, an air outlet hole is opened below the front end of the fixing rod, and a pressing piece is snap-fitted inside the air outlet hole. A return spring is wound around the outer side of the pressing piece. The right side of the pressing piece extends into the fixing rod and is provided with a sealing piece, and the diameter of the sealing piece is larger than the diameter of the air outlet hole.

[0010] Furthermore, the regulating mechanism includes a servo motor, and the servo motor is arranged at the top of the fixing frame. A threaded rod is installed at the output end of the servo motor, and the threaded rod is arranged at one end between the fixing frames. A movable block is threadedly connected to the outer side of the threaded rod, and a clamping plate is arranged on one side between the movable blocks. The clamping plates are sleeved on the left and right sides outside the detection device body.

[0011] Furthermore, a connecting rod is hinged to the side of the clamping plate, and the side of the top of the connecting rod is arranged above the mounting plate. A bolt is threadedly connected to the top of the connecting rod, and the bottom end of the bolt passes through the connecting rod and extends into the mounting plate.

[0012] Furthermore, fixing plates are installed on both sides of the fixing frame, and sliding rails are provided inside the fixing plates. Sliders matching the sliding rails are arranged on the sides of the movable block. A sliding structure is formed between the movable block and the fixing plate through the sliding connection between the sliding rail and the slider.

[0013] Furthermore, an elastic airbag is arranged at the bottom end of the fixing frame. Air outlets are connected to the front and rear ends of the elastic airbag through hoses, and the positions of the air outlets correspond to those of the detection device body. Connecting springs are arranged on both sides of the elastic airbag, and the top ends of the connecting springs are connected to the bottom end of the fixing frame. Thrust rods are arranged at the top and bottom ends of the detection device body.

[0014] Furthermore, the elastic airbag is connected to the fixed rod through a hose, and the fixed rods are connected to each other through a hose.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By rotating the connecting rod to adjust the angle, the position of the bottom end of the connecting rod corresponds to that of the sliding block inside the mounting plate. Then, the connecting rod and the detection device body can be locked and fixed in position through bolts, so that the clamping plate can adapt to detection device bodies of different sizes.

[0016] Furthermore, the rotation of the output end of the servo motor can drive the threaded rod to rotate. When the threaded rod rotates, it is in threaded connection with the movable block, so that the movable block can drive the clamping plate to change the height of the detection device body clamped inside.

[0017] Furthermore, the detection device body can be directly placed through the overall frame on the outside of the clamping plate, effectively avoiding manually taking the detection device body while searching for and inserting the wire. Furthermore, the insertion of the wire can be made more convenient. Since the movable block may be offset in angle due to the rotation of the threaded rod during the up and down movement, the sliding connection between the movable block and the fixing plate is formed through the cooperation of the sliding rail and the slider, restricting the angle of the movable block. Furthermore, the movable block can move more smoothly during the up and down movement, increasing the flexibility during use.

[0018] 2. The ejector rods provided at the top and bottom of the main body of the detection device can squeeze the elastic airbag provided at the bottom of the fixing frame, so that the gas inside the elastic airbag is transported through the hose to the air outlet. The air outlet can be used to blow air and clean the dust on the surface of the main body of the detection device. After the dust is reduced, it can effectively avoid the problem that the heat dissipation performance of the main body of the detection device is weakened due to dust accumulation during use. At the same time, when the gas inside the elastic airbag is output through the hose after being squeezed, a one-way valve is provided inside the hose, effectively avoiding the situation that the elastic airbag will suck dust back into the inside of the elastic airbag when resetting through the connecting spring.

[0019] Furthermore, the mutual cooperation of the placement rack and the soft bag can limit the position of the wire, avoiding the situation that the wire becomes loose after being plugged in. At the same time, the width of the placement rack and its own support can protect the connection between the wire and the socket, preventing the connection between the socket and the wire from breaking due to the weight of the wire causing dragging. By pressing the pressing piece, the reset spring is stressed and its length is shortened, and the sealing piece moves into the inside of the fixed rod, so that the gas inside the soft bag will be discharged through the air outlet holes, reducing the restriction of the placement rack and the soft bag on the wire, so that the wire can be pulled out, increasing the flexibility during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view structural schematic diagram of the present invention.

[0021] Figure 2 It is a structural schematic diagram of the adjustment mechanism of the present invention.

[0022] Figure 3 It is a side view cross-sectional structural schematic diagram of the present invention.

[0023] Figure 4 It is a rear view structural schematic diagram of the present invention.

[0024] Figure 5 It is a structural schematic diagram of the limiting mechanism of the present invention.

[0025] Figure 6 It is a front view cross-sectional structural schematic diagram of the present invention.

[0026] Figure 7 It is a partial enlarged structural schematic diagram of the adjustment mechanism of the present invention.

[0027] Figure 8 It is a structural schematic diagram of the adjustment mechanism of the present invention.

[0028] Figure 9 It is a partial enlarged structural schematic diagram of the limiting mechanism of the present invention.

[0029] In the figure: 1. Detection device body; 2. Mounting plate; 3. Servo motor; 4. Threaded rod; 5. Movable block; 6. Fixed plate; 7. Slide rail; 8. Slide block; 9. Clamping plate; 10. Connecting rod; 11. Bolt; 12. Jack rod; 13. Elastic airbag; 14. Connecting spring; 15. Air outlet; 16. Fixed frame; 17. Placing rack; 18. Soft bag; 19. Air guide rod; 20. Fixed rod; 21. Pressing piece; 22. Return spring; 23. Air outlet hole; 24. Sealing piece. Detailed implementation mode

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment 1: As Figure 1 , Figure 2 , Figure 4 , Figure 6 , Figure 7 and Figure 8 shown in the technical solution, in order to solve the problem that when detecting the inside of the ring main unit, the staff needs to connect the wire with the carried power quality detection device, and at the same time needs to find the wire inside the ring main unit, which will make the whole process more complicated, and there may be certain differences in the wire positions inside different ring main units. When the height of the power quality detection device is fixed, it will cause inconvenient connection of the wire: The power quality detection device of this power system discloses an adjustment mechanism, including a detection device body 1, and mounting plates 2 are installed at both the top and bottom of the detection device body 1; Fixed frames 16 are arranged above and below the detection device body 1, and an adjustment mechanism for adjusting the height of the detection device body 1 is arranged at one end between the fixed frames 16; The adjustment mechanism includes a servo motor 3, and the servo motor 3 is arranged at the top of the fixed frame 16. The output end of the servo motor 3 is installed with a threaded rod 4, and the threaded rod 4 is arranged at one end between the fixed frames 16. A movable block 5 is threadedly connected to the outside of the threaded rod 4, and a clamping plate 9 is arranged on one side between the movable blocks 5. The clamping plate 9 is sleeved on the left and right sides outside the detection device body 1; A connecting rod 10 is hinged to the side of the clamping plate 9, and the side of the top of the connecting rod 10 is arranged above the mounting plate 2. The top of the connecting rod 10 is threadedly connected with a bolt 11, and the bottom end of the bolt 11 passes through the connecting rod 10 and extends into the mounting plate 2; Fixed plates 6 are installed on both sides of the fixed frame 16, and slide rails 7 are opened on the inner sides of the fixed plates 6. Slide blocks 8 matching the slide rails 7 are arranged on the sides of the movable block 5. The movable block 5 and the fixed plate 6 are slidably connected through the sliding connection between the slide rails 7 and the slide blocks 8 to form a sliding structure.

[0032] In this example, the clamping plate 9 is clamped on the left and right sides of the detection device body 1. The bolt 11 is placed at the top of the mounting plate 2. There is a movable sliding block inside the mounting plate 2. The angle is adjusted by rotating the connecting rod 10, so that the bottom end of the connecting rod 10 corresponds to the position of the sliding block inside the mounting plate 2. Then, the position between the connecting rod 10 and the detection device body 1 can be locked and fixed through the bolt 11, so that the clamping plate 9 can adapt to detection device bodies 1 of different sizes; then, the rotation of the output end of the servo motor 3 can drive the threaded rod 4 to rotate. When the threaded rod 4 rotates, it is threadedly connected to the movable block 5, so that the movable block 5 can drive the clamping plate 9 to change the height of the detection device body 1 clamped to the inside, so that the detection device body 1 can change its own height according to the conditions inside different ring main units and the conditions of the user. And through the overall frame on the outside of the clamping plate 9, the detection device body 1 can be directly placed, effectively avoiding the need to manually pick up the detection device body 1 while searching for and inserting the wire, and thus making the insertion of the wire more convenient; since the movable block 5 may be offset in angle due to the rotation of the threaded rod 4 during the up and down movement, the mutual cooperation of the slide rail 7 and the slider 8 makes the movable block 5 and the fixed plate 6 form a sliding connection, restricting the angle of the movable block 5, and thus making the movable block 5 move more smoothly during the up and down movement, increasing the flexibility during use.

[0033] Embodiment 2: As Figures 1-6 shown in this technical solution, in order to solve the problem that the surface of the power quality detection device will adsorb dust due to static electricity during long-term use, and too much dust will cause the heat dissipation performance of the power quality detection device to weaken during use: This power system power quality detection device discloses a dust cleaning mechanism. An elastic airbag 13 is provided at the bottom end of the fixed frame 16, and air outlets 15 are connected to both the front and rear ends of the elastic airbag 13 through hoses, and the air outlets 15 correspond to the position of the detection device body 1. Connecting springs 14 are provided on both sides of the elastic airbag 13, and the top ends of the connecting springs 14 are connected to the bottom end of the fixed frame 16. Thumb rods 12 are provided at both the top end and the bottom end of the detection device body 1; the elastic airbag 13 is connected to the fixed rod 20 through a hose, and the fixed rods 20 are connected to each other through a hose.

[0034] In this example, when adjusting the height of the detection device body 1, the ejector rods 12 provided at the top and bottom of the detection device body 1 can squeeze the elastic airbag 13 provided at the bottom of the fixing frame 16, so that the gas inside the elastic airbag 13 is transported through the hose to the air outlet 15. The air outlet 15 can be used to blow and clean the dust on the surface of the detection device body 1. After the dust is reduced, it can effectively avoid the problem that the heat dissipation performance of the detection device body 1 is weakened due to dust accumulation during use; at the same time, when the gas inside the elastic airbag 13 is output through the hose after being squeezed, a one-way valve is provided inside the hose, effectively avoiding the situation that the elastic airbag 13 will suck dust back into the inside of the elastic airbag 13 when resetting through the connecting spring 14.

[0035] Embodiment 3: As Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 9 shown in the technical solution, in order to solve the problem that the connection between the wire and the plug is prone to break due to the wire sagging, affecting the service life of the wire: the power system power quality detection device discloses a limiting mechanism. A fixing rod 20 is provided at the rear end of the detection device body 1, and a limiting mechanism for protecting the wire is provided above the fixing rod 20. The limiting mechanism includes a gas guide rod 19, and the gas guide rod 19 is arranged inside the fixing rod 20. Placing frames 17 are provided at the top end of the gas guide rod 19 and the rear end of the detection device body 1; the cross section of the placing frame 17 is semicircular, and the positions of the placing frames 17 correspond to each other; a soft bag 18 is arranged inside the placing frame 17, and the outer side of the soft bag 18 is attached to the inner side of the placing frame 17. The cross section of the soft bag 18 is annular; an air outlet hole 23 is opened below the front end of the fixing rod 20, and a pressing piece 21 is snap-connected inside the air outlet hole 23. A return spring 22 is wound around the outer side of the pressing piece 21. The right side of the pressing piece 21 extends into the fixing rod 20 and is provided with a sealing piece 24, and the diameter of the sealing piece 24 is larger than the diameter of the air outlet hole 23.

[0036] In this example, when connecting the wire, the wire passes through the placement rack 17 and the soft bag 18 arranged inside the placement rack 17. The mutual cooperation of the placement rack 17 and the soft bag 18 can limit the position of the wire, avoiding the loosening of the wire after insertion. At the same time, the width of the placement rack 17 and its own support can protect the connection between the wire and the insertion port, preventing the connection between the insertion port and the wire from breaking due to the dragging caused by the weight of the wire. When the elastic airbag 13 is squeezed by the ejector rod 12, part of the gas is transported to the inside of the fixing rod 20 through the hose. The fixing rods 20 are connected by hoses, so that the gas inside the elastic airbag 13 can be evenly distributed inside the multiple fixing rods 20 during transportation. The gas inside the fixing rod 20 then enters the inside of the soft bag 18 by backflow, enabling the soft bag 18 to wrap the outside of the wire, thus realizing the protection of the wire by the soft bag 18, and further enabling the wire to effectively avoid the situation of loose insertion when being clamped. When the wire needs to be pulled out, by pressing the pressing piece 21, the return spring 22 is stressed and its length is shortened, and the sealing piece 24 moves towards the inside of the fixing rod 20, so that the gas inside the soft bag 18 will be discharged through the air outlet hole 23, reducing the restriction of the placement rack 17 and the soft bag 18 on the wire, and enabling the wire to be pulled out, increasing the flexibility during use.

[0037] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power system power quality detection device, comprising a detection device body (1), wherein a mounting plate (2) is mounted on the top and bottom of the detection device body (1); Features: A fixing frame (16) is provided above and below the detection device body (1), and an adjustment mechanism for adjusting the height of the detection device body (1) is provided at one end between the fixing frames (16); A fixing rod (20) is provided at the rear end of the detection device body (1), and a limiting mechanism for protecting the wire is provided above the fixing rod (20), the limiting mechanism comprises an air guide rod (19), and the air guide rod (19) is arranged inside the fixing rod (20), and a placement rack (17) is provided at the top end of the air guide rod (19) and the rear end of the detection device body (1).

2. The power quality detection device for a power system according to claim 1, characterized in that: The cross section of the placement rack (17) is semicircular, and the positions of the placement racks (17) correspond to each other.

3. The power quality detection device for a power system according to claim 2, characterized in that: A soft capsule (18) is arranged inside the placement rack (17), and the outer side of the soft capsule (18) fits with the inner side of the placement rack (17), and the cross section of the soft capsule (18) is in the shape of a circular ring.

4. The power quality detection device for a power system according to claim 3, characterized in that: An air outlet (23) is provided below the front end of the fixing rod (20), and a pressing sheet (21) is snap-connected inside the air outlet (23), a return spring (22) is wound around the outside of the pressing sheet (21), and the right side of the pressing sheet (21) extends to the inside of the fixing rod (20) and is provided with a sealing sheet (24), and the diameter of the sealing sheet (24) is greater than the diameter of the air outlet (23).

5. The power quality detection device for a power system according to claim 1, characterized in that: The adjustment mechanism comprises a servo motor (3), and the servo motor (3) is arranged at the top end of a fixing frame (16), a threaded rod (4) is installed at the output end of the servo motor (3), and the threaded rod (4) is arranged at one end between the fixing frames (16), the outer side of the threaded rod (4) is threadedly connected to a movable block (5), and a clamping plate (9) is arranged at one side between the movable blocks (5), and the clamping plate (9) is sleeved on the left and right sides of the outside of the detection device body (1).

6. The power quality detection device for a power system according to claim 5, characterized in that: A connecting rod (10) is hingedly connected to the side of the clamping plate (9), and the side of the top end of the connecting rod (10) is arranged above the mounting plate (2). A bolt (11) is threadedly connected to the top end of the connecting rod (10), and the bottom end of the bolt (11) passes through the connecting rod (10) and extends into the interior of the mounting plate (2).

7. The power quality detection device for a power system according to claim 6, characterized in that: Fixed plates (6) are installed on both sides of the fixed frame (16), and a slide rail (7) is provided on the inner side of the fixed plate (6). A sliding block (8) matching the slide rail (7) is provided on the side of the movable block (5). The movable block (5) and the fixed plate (6) are connected by sliding between the slide rail (7) and the sliding block (8) to form a sliding structure.

8. The power quality detection device for a power system according to claim 7, characterized in that: An elastic airbag (13) is provided at the bottom end of the fixing frame (16), and both front and rear ends of the elastic airbag (13) are connected to air outlets (15) via hoses, and the air outlets (15) correspond to the positions of the detection device body (1), connecting springs (14) are provided on both sides of the elastic airbag (13), and the top ends of the connecting springs (14) are connected to the bottom end of the fixing frame (16), and top rods (12) are provided at the top and bottom ends of the detection device body (1).

9. The power quality detection device for a power system according to claim 8, characterized in that: The elastic airbag (13) is connected to the fixing rod (20) via a hose, and the fixing rods (20) are connected to each other via a hose.

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