Power distribution network line loss measuring device and measuring method

Abstract

The invention discloses a power distribution network line loss measuring device and method, and belongs to the technical field of line loss measuring equipment.The device comprises a base, a synchronous diameter detecting mechanism and a measuring and calculating body are arranged on the base, a display controller is arranged on the outer side of the measuring and calculating body, the synchronous diameter detecting mechanism comprises a moving assembly, and a supporting frame is arranged on the moving assembly; a length detection mechanism is arranged on the supporting frame, a synchronous clamping assembly is arranged on the supporting frame through a telescopic assembly, a pressure sensor is arranged at the top of a clamping rod of the synchronous clamping assembly, and the pressure sensor, the synchronous clamping assembly and the moving assembly are all electrically connected with a display controller. Meanwhile, the invention discloses a measuring method based on the device, by adopting the power distribution network line loss measuring device and the measuring method, the cable is fixed in a synchronous clamping mode, the diameter of the cable is detected at the same time, circumferential stress is uniform, the detection precision is improved, meanwhile, detection can be carried out at multiple points in the axial direction, and the detection precision is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of line loss measurement equipment, and in particular to a distribution network line loss measurement device and a measurement method. Background Art

[0002] In the process of power transmission and distribution, the transmission of electric energy and the conversion of electromagnetic energy are achieved through electric current. When the current passes through the wire, it will cause loss, and there are a large number of transformers, switches, instruments and other equipment in the power transmission network, which will also consume a certain amount of energy. Generally, the energy loss in the power supply process of the power system is called line loss.

[0003] After searching, the patent with application number 202311240242.3 discloses a distribution network line loss measuring device, including a device main body and a measuring device, the outside of the mounting seat is fixedly connected to a mounting plate, one side of the mounting plate is fixedly connected to a tension sensor, the outside of the clamping plate is fixedly connected to a fixed block, a tension sensing mechanism is arranged between the tension sensor and the fixed block, the tension sensing mechanism includes a hook, a hanging ring, a fixed plate and a spring, the other side of the measuring device is fixedly connected to a heat sink, the bottom of the heat sink is provided with a dustproof net, the inside of the measuring device is provided with a heat dissipation mechanism, the heat dissipation mechanism includes a mounting rod, a motor and a fan; the tension exerted on the tension sensor can be converted into the diameter of the distribution network line through the calculation panel, which is convenient for measuring the line loss of the distribution network line. While dissipating heat, due to the special design of the heat sink and the presence of the dustproof net, moisture and dust in the air can be prevented from entering the measuring device, thereby ensuring the normal operation of the internal device. The patent with application number 202022684656.3 discloses a distribution network line loss measuring device. A slide rail is fixedly connected to the upper left part of the workbench, and a slot is bored at the right end of the fixed block. Two slide rails are fixedly connected to the upper right part of the workbench. Sliding plates are slidably connected in the two slide rails. A first fixing mechanism is provided on the lower side of the sliding plate, and a second fixing mechanism is provided on the upper side of the fixed block. A slide groove is bored at the front end of the sliding plate, and a slider is slidably connected in the slide groove. A second measuring plate is fixedly connected to the upper end of the slider, and a fixed plate is fixedly connected to the upper end of the sliding plate. A socket is bored at the front end of the fixed plate, and the second measuring plate is movably plugged into the socket. A sliding rod is fixedly connected to the rear end of the second measuring plate, so as to measure the length and diameter of the network cable, facilitate the calculation of the volume of the network cable, and thus accurately calculate the line loss.

[0004] The prior art still has the following problems:

[0005] (1) When detecting the diameter of the cable, only the data in one direction is measured, and the cable is clamped by a clamp or other means, which will cause a certain amount of deformation of the cable, resulting in low measurement accuracy and affecting subsequent measurement results.

[0006] (2) When the cable to be tested is long, it is necessary to manually organize the cables, which is time-consuming and laborious. In addition, if the existing equipment is suitable for testing long cables, the size of the equipment needs to be increased, which takes up a lot of space. Summary of the invention

[0007] The purpose of the present invention is to provide a distribution network line loss measurement device and a measurement method to solve the above technical problems.

[0008] To achieve the above-mentioned object, the present invention provides a power distribution network line loss measuring device, comprising a base and a measuring body arranged on the base, a display controller is arranged outside the measuring body, a temperature detection module, a detection power supply and a current detection module are arranged inside the measuring body, the temperature detection module, the detection power supply and the current detection module are all electrically connected to the display controller, and also includes a synchronous diameter detection mechanism arranged on the base;

[0009] The synchronous diameter detection mechanism includes a moving component, a support frame is arranged on the moving component, a length detection mechanism is arranged on the support frame, a synchronous clamping component is arranged on the support frame through a telescopic component, a pressure sensor is arranged on the top of the clamping rod of the synchronous clamping component, and the pressure sensor, the synchronous clamping component and the moving component are all electrically connected to the display controller.

[0010] Preferably, the moving assembly includes a moving drive motor, which is installed at the bottom of the support frame, and the output shaft of the moving drive motor is installed with a moving drive gear, which is meshed with a moving rack on the side of the base; and travel protection switches are provided at both ends of the moving rack;

[0011] The mobile driving motor and the travel protection switch are both electrically connected to the display controller.

[0012] Preferably, an arc-shaped protective member is provided on one side of the support frame, the cross section of the arc-shaped protective member is V-shaped, and a plurality of anti-wear balls are embedded inside the arc-shaped protective member;

[0013] The length detection mechanism is arranged on the other side of the support frame, and the length detection mechanism comprises an axial electric push rod, a radial electric push rod is arranged at the telescopic end of the axial electric push rod, a U-shaped guide plate is arranged at the telescopic end of the radial electric push rod, a contact roller is arranged in the U-shaped guide plate, and the contact roller is connected to an encoder;

[0014] The axial electric push rod, the radial electric push rod and the encoder are all electrically connected to the display controller.

[0015] Preferably, the synchronous clamping assembly comprises a fixed mounting ring, a synchronous driving ring is rotatably arranged in the ring groove of the fixed mounting ring through a bearing, a spiral protrusion is arranged at the bottom of the synchronous driving ring, at least two pairs of radial grooves are distributed circumferentially on the fixed mounting ring, each pair of radial grooves is arranged in a mirror image, a clamping plate is arranged in the radial groove, a plurality of concentrically arranged arc grooves are arranged at the bottom of the clamping plate, the spiral protrusion is arranged in the arc groove, a clamping rod is threadedly connected to the clamping plate, an observation through hole is opened on the clamping plate, and a scale is arranged outside the observation through hole;

[0016] A clamping drive motor is fixed on the outside of the fixed mounting ring, a clamping drive gear is arranged on the output shaft of the clamping drive motor, and the clamping drive gear is meshed with the gear ring on the outside of the synchronous drive ring;

[0017] The clamping drive motor is electrically connected to the display controller.

[0018] Preferably, a wire management mechanism is also provided, which includes a wire pulling assembly and a telescopic wire placement rack. The telescopic wire placement rack is arranged on a base between the support frame and the measuring body through a translation assembly, and the wire pulling assembly is arranged on the measuring body through a reciprocating assembly, and the reciprocating assembly is connected to the translation assembly.

[0019] Preferably, the reciprocating assembly includes a reciprocating drive motor mounted on the measuring body, a drive turntable and a first transmission gear are arranged on the output shaft of the reciprocating drive motor, a drive column is arranged on the drive turntable, the drive column is arranged in a limit frame, guide rods are arranged on both sides of the limit frame, the guide rods are slidably arranged on the U-shaped guide frame, and the wire pulling assembly includes a clamping cylinder, which is arranged on the top of the guide rod arranged opposite to the synchronous diameter detection mechanism;

[0020] The reciprocating drive motor and the clamping cylinder are both electrically connected to the display controller.

[0021] Preferably, the translation assembly includes a translation slot plate, a translation slot is arranged on the upper side of the translation slot plate, a slide plate arranged on the base is arranged on the lower side of the translation slot plate, a translation rack is arranged on the side of the translation slot plate, the translation rack is meshed with the translation driving gear, the translation driving gear is arranged on the base through a rotating shaft, an intermittent turntable is arranged on the rotating shaft, four arc grooves are opened on the side of the intermittent turntable, a U-shaped groove is opened on the intermittent turntable between adjacent arc grooves, a toggle turntable is arranged in parallel with the intermittent turntable, a crescent plate and a toggle column are arranged on the toggle turntable, and the toggle turntable is provided with a crescent plate and a toggle column. The moving column is adapted to the U-shaped groove, the crescent plate is adapted to the arc groove, the rotating shaft of the toggle dial is arranged on the base, the toggle dial is meshed with a toggle gear, the rotating shaft of the toggle gear is arranged on the base, and the rotating shaft of the toggle gear is connected with a first bevel gear, the first bevel gear is meshed with a second bevel gear, the rotating shaft of the second bevel gear is arranged on the base and is provided with a second transmission gear, the second transmission gear is connected to the intermediate gear on the base through a chain, the intermediate gear is connected to the first rotating gear through a chain, and the intermediate gear is arranged on the side of the base.

[0022] Preferably, the telescopic wire rack comprises a plurality of X-shaped articulated racks which are articulated in sequence, the X-shaped articulated racks at both ends are connected with a lifting assembly, a hinge plate is arranged below the lifting assembly, one of the hinge plates is arranged in a translation slide slot, the other hinge plate is connected with a moving seat, a telescopic drive motor is arranged on the moving seat, the telescopic drive motor is connected with a telescopic drive gear, and the telescopic drive gear is meshed with a rack on the upper side of the translation slot plate;

[0023] The telescopic driving motor is electrically connected to the display controller.

[0024] A measurement method based on the above-mentioned distribution network line loss measurement device, the specific steps are as follows:

[0025] Step S1: input the material and calibrated length of the cable to be tested into the display controller, one end of the cable to be tested passes through the synchronous diameter detection mechanism and is clamped, and the telescopic component is started to insert one end of the cable to be tested into the measurement body;

[0026] Step S2: setting the detection mode according to the calibrated length of the cable to be tested;

[0027] Step S3: Perform diameter detection at different axial positions according to the set detection mode to obtain diameter data, obtain the actual length value of the cable to be tested through the length detection mechanism, and transmit the diameter data and the actual length value to the measurement body, and the display controller calculates the average diameter value according to the diameter data;

[0028] Step S4: After the diameter and length detection is completed, the other end of the cable is set on the measuring body and the detection power supply of the measuring body is started. The current passing through the measured cable is obtained through the current detection module of the measuring body, and the actual temperature is detected through the temperature detection module;

[0029] Step S5: The measuring body calculates the line loss according to the average diameter value, the actual length value and the current value. The calculation formula is as follows:

[0030]

[0031] Among them, ΔP is the line loss value, I is the current value, ρ is the guide resistivity related to the material of the cable to be tested and the actual temperature, L is the actual length value, and R is the average diameter value.

[0032] Preferably, the detection mode includes a short-line detection mode and a long-line detection mode. When the calibrated length of the cable to be tested is greater than the set length, the long-line detection mode is started, and when the calibrated length of the cable to be tested is less than or equal to the set length, the short-line detection mode is started;

[0033] The detection process of short line detection mode is as follows:

[0034] The intermittent start of the telescopic component is gradually shortened, and when the telescopic component reaches the stroke value, the mobile drive motor is started intermittently;

[0035] The clamping drive motor of the synchronous clamping assembly is started in the intermittent gap, and the clamping drive motor stops when the pressure sensor at the top of each clamping rod reaches the set pressure, and the current intermittent position diameter data is determined according to the rotation angle of the clamping drive motor;

[0036] The control display starts the radial electric push rod according to the diameter data of the first detection, so that the contact roller of the cable to be tested is set in the U-shaped guide plate for length detection;

[0037] When the data difference of each pressure sensor exceeds the set value, it is determined that the cable to be tested is damaged, and the control display is displayed to stop the detection;

[0038] The long-line detection mode detection process is as follows:

[0039] The telescopic drive motor is started to unfold the telescopic wire rack and the lifting assembly is started to raise the height of the telescopic wire rack. The telescopic assembly is started intermittently to shorten gradually. When the telescopic assembly reaches the stroke value, the reciprocating drive motor is started to reciprocate the clamping cylinder. When the clamping cylinder moves forward to the front, the clamping is started. When the clamping cylinder moves back to the rear, the cable is released. At the same time, the translation assembly drives the telescopic wire rack to move intermittently under the drive of the reciprocating drive motor.

[0040] The clamping drive motor of the synchronous clamping assembly is started in the intermittent gap, and the clamping drive motor stops when the pressure sensor at the top of each clamping rod reaches the set pressure, and the current intermittent position diameter data is determined according to the rotation angle of the clamping drive motor;

[0041] The control display starts the radial electric push rod according to the diameter data of the first detection, so that the contact roller of the cable to be tested is set in the U-shaped guide plate for length detection;

[0042] When the data difference of each pressure sensor exceeds the set value, it is determined that the cable to be tested is damaged, and the detection is stopped by controlling the display.

[0043] Therefore, the present invention adopts the above-mentioned distribution network line loss measurement device and measurement method, which has the following beneficial effects:

[0044] (1) The cable is fixed by synchronous tightening and the cable diameter is detected at the same time. The circumferential force is evenly distributed to improve the detection accuracy. At the same time, the detection can be performed at multiple axial positions, which greatly improves the detection accuracy.

[0045] (2) For cables with longer lengths, the cable drawing method is used for cable testing. During the testing process, the cables are neatly arranged on the telescopic cable rack through the cable management mechanism, which greatly reduces the labor intensity.

[0046] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 This is a schematic structural diagram of a distribution network line loss measurement device according to Embodiment 1 of the present invention;

[0048] Figure 2 The principle block diagram of the calculation body of the present invention;

[0049] Figure 3 It is a partial cross-sectional view of the synchronous clamping assembly of the present invention;

[0050] Figure 4 This is a schematic diagram of the structure of the fixed installation ring of the present invention;

[0051] Figure 5 It is a schematic diagram of the structure of the clamping plate of the present invention;

[0052] Figure 6 This is a top view of a distribution network line loss measurement device according to embodiment 2 of the present invention;

[0053] Figure 7 This is a schematic structural diagram of a distribution network line loss measurement device according to Embodiment 2 of the present invention;

[0054] Figure 8 This is a schematic diagram of the partial structure of Embodiment 2 of the present invention;

[0055] Fig. 9 This is a schematic diagram of the structure of a reciprocating assembly according to Embodiment 2 of the present invention;

[0056] Fig.10 It is a schematic diagram of the structure of the telescopic wire rack of the present invention.

[0057] Reference numerals

[0058] 1. Calculation body; 11. Display controller; 12. Temperature detection module; 13. Detection power supply; 14. Current detection module;

[0059] 2. Synchronous diameter detection mechanism; 21. Moving assembly; 211. Moving drive motor; 212. Moving drive gear; 213. Moving rack; 22. Support frame; 221. Arc-shaped protective member; 23. Telescopic assembly; 24. Synchronous clamping assembly; 241. Fixed mounting ring; 242. Synchronous drive ring; 243. Spiral protrusion; 244. Radial slide groove; 245. Ring groove; 246. Clamping plate; 247. Arc-shaped groove; 248. Clamping rod; 249. Observation through hole; 2410. Scale; 2411. Clamping drive motor;

[0060] 3. Length detection mechanism; 31. Axial electric push rod; 32. Radial electric push rod; 33. U-shaped guide plate; 34. Contact roller; 35. Encoder;

[0061] 4. Wire management mechanism; 41. Wire pulling assembly; 411. Clamping cylinder; 42. Telescopic wire rack; 421. Moving seat; 422. Telescopic drive motor; 423. Lifting assembly; 424. Articulated plate; 43. Translation assembly; 431. Translation slot plate; 432. Translation slide; 433. Slide plate; 434. Translation rack; 435. Translation drive gear; 436. Intermittent turntable; 437. Arc slot; 438. U-shaped slot; 439 , a toggle dial; 4310, a crescent plate; 4311, a toggle column; 4312, a first bevel gear; 4313, a second bevel gear; 4314, a second transmission gear; 4315, a toggle gear; 4316, an intermediate gear; 44, a reciprocating assembly; 441, a reciprocating drive motor; 442, a drive dial; 443, a first transmission gear; 444, a drive column; 445, a limit frame; 446, a guide rod; 447, a U-shaped guide frame. DETAILED DESCRIPTION

[0062] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the invented product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do 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 the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", 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 an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0064] Example 1

[0065] like Figure 1 As shown, a distribution network line loss measuring device includes a base and a measuring body 1 arranged on the base. A display controller 11 is arranged outside the measuring body 1. Figure 2As shown, a temperature detection module 12, a detection power supply 13 and a current detection module 14 are provided in the measuring body 1. The temperature detection module 12, the detection power supply 13 and the current detection module 14 are all electrically connected to the display controller 11. The measuring body 1 is an existing conventional setting and has not been improved, so it will not be described in detail here.

[0066] This embodiment also includes a synchronous diameter detection mechanism 2 arranged on the base, which realizes synchronous clamping of the cable and diameter detection of the cable. The synchronous diameter detection mechanism 2 includes a moving component 21, on which a support frame 22 is arranged, and the moving component 21 includes a moving drive motor 211, which is installed at the bottom of the support frame 22, and the output shaft of the moving drive motor 211 is installed with a moving drive gear 212, which is meshed with a moving rack 213 on the side of the base; both ends of the moving rack 213 are provided with a stroke protection switch, and the moving drive motor 211 and the stroke protection switch are electrically connected to the display controller 11. The support frame 22 is moved along the base, so that the position of the support frame 22 can be adjusted according to the length of the cable.

[0067] An arc-shaped protective member 221 is provided on one side of the support frame 22. The cross section of the arc-shaped protective member 221 is V-shaped. A number of anti-wear balls are embedded inside the arc-shaped protective member 221 to protect the cable to be tested and avoid wearing the cable during the measurement process. A length detection mechanism 3 is provided on the other side of the support frame 22. The length detection mechanism 3 includes an axial electric push rod 31. A radial electric push rod 32 is provided at the telescopic end of the axial electric push rod 31. A U-shaped guide plate 33 is provided at the telescopic end of the radial electric push rod 32. A contact roller 34 is provided inside the U-shaped guide plate 33. The contact roller 34 is connected to an encoder 35. The axial electric push rod 31, the radial electric push rod 32 and the encoder 35 are all electrically connected to the display controller 11. The position of the U-shaped guide plate 33 is adjusted by the axial electric push rod 31 and the radial electric push rod 32, so as to detect the actual length of the cable to be tested when the support frame 22 moves or the cable to be tested moves.

[0068] The support frame 22 is provided with a synchronous clamping assembly 24 through a telescopic assembly 23 (in this embodiment, it is a cylinder, and it can also be an electric telescopic rod or a hydraulic cylinder). Figure 3-Figure 5As shown, the synchronous clamping assembly 24 includes a fixed mounting ring 241, in which a synchronous driving ring 242 is rotatably arranged in the annular groove 245 of the fixed mounting ring 241 through a bearing, a spiral protrusion 243 is arranged at the bottom of the synchronous driving ring 242, and three pairs of radial grooves 244 are distributed circumferentially on the fixed mounting ring 241, and each pair of radial grooves 244 is arranged in a mirror image, and a clamping plate 246 is arranged in the radial groove 244, and a plurality of concentrically arranged arc grooves 247 are arranged at the bottom of the clamping plate 246, and the spiral protrusion is arranged in the arc groove 247, and the clamping plate 246 is threadedly connected with a clamping rod 248, and a pressure sensor is arranged on the top of the clamping rod 248, and an observation through hole 249 is opened in the clamping plate 246, and a scale 2410 is arranged on the outside of the observation through hole 249, so as to adjust the protruding length of the clamping rod 248 by replacing the actual thickness of the cable. A clamping drive motor 2411 is fixed to the outside of the fixed mounting ring 241. A clamping drive gear is provided on the output shaft of the clamping drive motor 2411. The clamping drive gear meshes with the gear ring on the outside of the synchronous drive ring 242. The clamping drive motor 2411 and the pressure sensor are both electrically connected to the display controller 11. The three pairs of clamping rods 248 are clamped and released synchronously by controlling the rotation of the clamping drive motor 2411. The diameter of the current axis position of the cable can be calculated according to the rotation angle of the clamping drive motor 2411.

[0069] Example 2

[0070] The difference between this embodiment and embodiment 1 is that a wire management mechanism 4 is also provided to facilitate the detection of long cables. Figure 6-Figure 10 As shown, the wire management mechanism 4 includes a wire pulling assembly 41 and a telescopic wire rack 42. The telescopic wire rack 42 is arranged on a base between the support frame 22 and the measuring body 1 through a translation assembly 43. The wire pulling assembly 41 is arranged on the measuring body 1 through a reciprocating assembly 44. The reciprocating assembly 44 is connected to the translation assembly 43.

[0071] The reciprocating assembly 44 includes a reciprocating drive motor 441 installed on the measuring body 1, and a drive turntable 442 and a first transmission gear 443 are arranged on the output shaft of the reciprocating drive motor 441, and a drive column 444 is arranged on the drive turntable 442. The drive column 444 is arranged in a limit frame 445, and guide rods 446 are arranged on both sides of the limit frame 445. The guide rods 446 are slidably arranged on a U-shaped guide frame 447. The wire pulling assembly 41 includes a clamping cylinder 411, and the clamping cylinder 411 is arranged on the top of the guide rod 446 arranged opposite to the synchronous diameter detection mechanism 2. The reciprocating drive motor 441 and the clamping cylinder 411 are both electrically connected to the display controller 11.

[0072] The translation assembly 43 includes a translation slot plate 431, a translation slot 432 is arranged on the upper side of the translation slot plate 431, a slide plate 433 arranged on the base is arranged on the lower side of the translation slot plate 431, a translation rack 434 is arranged on the side of the translation slot plate 431, the translation rack 434 is meshed with a translation driving gear 435, the translation driving gear 435 is arranged on the base through a rotating shaft, an intermittent turntable 436 is arranged on the rotating shaft, four arc grooves 437 are opened on the side of the intermittent turntable 436, a U-shaped groove 438 is opened on the intermittent turntable 436 between adjacent arc grooves 437, a toggle turntable 439 is arranged in parallel with the intermittent turntable 436, a crescent plate 4310 and a toggle column 4311 are arranged on the toggle turntable 439, and the toggle column 4311 is matched with the U-shaped groove 438, the crescent plate 4310 is matched with the arc groove 437, the rotating shaft of the toggle dial 439 is set on the base, the toggle dial 439 is meshed with a toggle gear 4315, the rotating shaft of the toggle gear 4315 is set on the base, and the rotating shaft of the toggle gear 4315 is connected with the first bevel gear 4312, the first bevel gear 4312 is meshed with the second bevel gear 4313, the rotating shaft of the second bevel gear 4313 is set on the base and is provided with a second transmission gear 4314, the second transmission gear 4314 is connected to the middle gear 4316 on the base through a chain, the middle gear 4316 is connected to the first rotating gear through a chain, and the middle gear 4316 is set on the side of the base. The telescopic wire rack 42 includes a plurality of X-shaped articulated racks articulated in sequence, and the X-shaped articulated racks at both ends are connected to a lifting assembly 423, and a hinge plate 424 is arranged under the lifting assembly 423, wherein one hinge plate 424 is arranged in a translation slot 432, and the other hinge plate 424 is connected to a moving seat 421, and a telescopic driving motor 422 is arranged on the moving seat 421, and the telescopic driving motor 422 is connected to a telescopic driving gear, and the telescopic driving gear is meshed with a rack on the upper side of the translation slot plate 431, and the telescopic driving motor 422 is electrically connected to the display controller 11.

[0073] A measurement method of the above-mentioned distribution network line loss measurement device, the specific steps are as follows:

[0074] Step S1: input the material and calibrated length of the cable to be tested into the display controller 11 , one end of the cable to be tested passes through the synchronous diameter detection mechanism 2 and is clamped, and the telescopic component 23 is started to insert one end of the cable to be tested into the measuring body 1 .

[0075] Step S2: Set the detection mode according to the calibrated length of the cable to be tested. The detection mode includes a short-line detection mode and a long-line detection mode. When the calibrated length of the cable to be tested is greater than the set length, the long-line detection mode is activated. When the calibrated length of the cable to be tested is less than or equal to the set length, the short-line detection mode is activated.

[0076] Step S3: Perform diameter detection at different axial positions according to the set detection mode.

[0077] The detection process of short line detection mode is as follows:

[0078] The telescopic component 23 is started intermittently and gradually shortened. When the telescopic component 23 reaches the stroke value, the intermittent starting of the moving drive motor 211 is started.

[0079] The clamping drive motor 2411 of the synchronous clamping assembly 24 is started in the intermittent gap. When the pressure sensor at the top of each clamping rod 248 reaches the set pressure, the clamping drive motor 2411 stops, and the current intermittent position diameter data is determined according to the rotation angle of the clamping drive motor 2411.

[0080] The control display starts the radial electric push rod 32 according to the diameter data of the first detection, so that the cable to be tested is set in the U-shaped guide plate 33 to contact the roller 34 for length detection.

[0081] When the data difference of each pressure sensor exceeds the set value, it is determined that the cable to be tested is damaged, and the detection is stopped by controlling the display.

[0082] The long-line detection mode detection process is as follows:

[0083] Start the telescopic drive motor 422 to unfold the telescopic wire rack 42 and start the lifting assembly 423 to raise the height of the telescopic wire rack 42. The telescopic assembly 23 is started intermittently and gradually shortened. When the telescopic assembly 23 reaches the stroke value, start the reciprocating drive motor 441 to make the clamping cylinder 411 reciprocate. When the clamping cylinder 411 moves forward to the front, it starts clamping. When the clamping cylinder 411 moves back to the rear, it releases the cable. At the same time, driven by the reciprocating drive motor 441, the translation assembly 43 drives the telescopic wire rack 42 to move intermittently.

[0084] The clamping drive motor 2411 of the synchronous clamping assembly 24 is started in the intermittent gap. When the pressure sensor at the top of each clamping rod 248 reaches the set pressure, the clamping drive motor 2411 stops, and the current intermittent position diameter data is determined according to the rotation angle of the clamping drive motor 2411.

[0085] The control display starts the radial electric push rod 32 according to the diameter data of the first detection, so that the cable to be tested is set in the U-shaped guide plate 33 to contact the roller 34 for length detection.

[0086] When the data difference of each pressure sensor exceeds the set value, it is determined that the cable to be tested is damaged, and the detection is stopped by controlling the display.

[0087] The diameter data is obtained, and the actual length value of the cable to be measured is obtained through the length detection mechanism 3. The diameter data and the actual length value are transmitted to the measuring body 1, and the display controller 11 calculates the average diameter value according to the diameter data.

[0088] Step S4: After the diameter and length detection is completed, the other end of the cable is set on the measuring body 1 and the detection power supply 13 of the measuring body 1 is started. The current passing through the cable to be tested is obtained through the current detection module 14 of the measuring body 1, and the actual temperature is detected through the temperature detection module 12.

[0089] Step S5: Calculate the line loss of the body 1 according to the average diameter value, the actual length value and the current value. The calculation formula is as follows:

[0090]

[0091] Among them, ΔP is the line loss value, I is the current value, ρ is the guide resistivity related to the material of the cable to be tested and the actual temperature, L is the actual length value, and R is the average diameter value.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A distribution network line loss measuring device, comprising a base and a measuring body arranged on the base, a display controller is arranged outside the measuring body, a temperature detection module, a detection power supply and a current detection module are arranged inside the measuring body, and the temperature detection module, the detection power supply and the current detection module are all electrically connected to the display controller, characterized in that: It also includes a synchronous diameter detection mechanism disposed on the base; The synchronous diameter detection mechanism includes a moving component, a support frame is arranged on the moving component, a length detection mechanism is arranged on the support frame, a synchronous clamping component is arranged on the support frame through a telescopic component, a pressure sensor is arranged on the top of the clamping rod of the synchronous clamping component, and the pressure sensor, the synchronous clamping component and the moving component are all electrically connected to the display controller.

2. A distribution network line loss measuring device according to claim 1, characterized in that: The moving assembly includes a moving drive motor, which is installed at the bottom of the support frame. The output shaft of the moving drive motor is equipped with a moving drive gear, which is meshed with a moving rack on the side of the base. Both ends of the moving rack are provided with a travel protection switch. The mobile driving motor and the travel protection switch are both electrically connected to the display controller.

3. A distribution network line loss measuring device according to claim 2, characterized in that: An arc-shaped protective piece is provided on one side of the support frame, the cross section of the arc-shaped protective piece is V-shaped, and a number of anti-wear balls are embedded inside the arc-shaped protective piece; The length detection mechanism is arranged on the other side of the support frame, and the length detection mechanism comprises an axial electric push rod, a radial electric push rod is arranged at the telescopic end of the axial electric push rod, a U-shaped guide plate is arranged at the telescopic end of the radial electric push rod, a contact roller is arranged in the U-shaped guide plate, and the contact roller is connected to an encoder; The axial electric push rod, the radial electric push rod and the encoder are all electrically connected to the display controller.

4. A distribution network line loss measuring device according to claim 3, characterized in that: The synchronous clamping assembly comprises a fixed mounting ring, a synchronous driving ring is rotatably arranged in the ring groove of the fixed mounting ring through a bearing, a spiral protrusion is arranged at the bottom of the synchronous driving ring, at least two pairs of radial grooves are distributed around the circumference of the fixed mounting ring, each pair of radial grooves is arranged in a mirror image, a clamping plate is arranged in the radial groove, a plurality of concentrically arranged arc grooves are arranged at the bottom of the clamping plate, the spiral protrusion is arranged in the arc groove, a clamping rod is threadedly connected to the clamping plate, an observation through hole is opened in the clamping plate, and a scale is arranged outside the observation through hole; A clamping drive motor is fixed on the outside of the fixed mounting ring, a clamping drive gear is arranged on the output shaft of the clamping drive motor, and the clamping drive gear is meshed with the gear ring on the outside of the synchronous drive ring; The clamping drive motor is electrically connected to the display controller.

5. A distribution network line loss measuring device according to claim 4, characterized in that: A wire management mechanism is also provided, which includes a wire pulling assembly and a telescopic wire placement frame. The telescopic wire placement frame is arranged on a base between the support frame and the measuring body through a translation assembly, and the wire pulling assembly is arranged on the measuring body through a reciprocating assembly, and the reciprocating assembly is connected to the translation assembly.

6. A distribution network line loss measuring device according to claim 5, characterized in that: The reciprocating assembly includes a reciprocating drive motor installed on the measuring body, a drive turntable and a first transmission gear are arranged on the output shaft of the reciprocating drive motor, a drive column is arranged on the drive turntable, the drive column is arranged in a limit frame, guide rods are arranged on both sides of the limit frame, and the guide rods are slidably arranged on the U-shaped guide frame, and the wire pulling assembly includes a clamping cylinder, and the clamping cylinder is arranged on the top of the guide rod arranged opposite to the synchronous diameter detection mechanism; The reciprocating drive motor and the clamping cylinder are both electrically connected to the display controller.

7. A distribution network line loss measuring device according to claim 6, characterized in that: The translation assembly includes a translation slot plate, a translation slot is arranged on the upper side of the translation slot plate, a slide plate arranged on the base is arranged on the lower side of the translation slot plate, a translation rack is arranged on the side of the translation slot plate, the translation rack is meshed with the translation driving gear, the translation driving gear is arranged on the base through a rotating shaft, an intermittent turntable is arranged on the rotating shaft, four arc grooves are opened on the side of the intermittent turntable, a U-shaped groove is opened on the intermittent turntable between adjacent arc grooves, a toggle turntable is arranged in parallel with the intermittent turntable, a crescent plate and a toggle column are arranged on the toggle turntable, and the toggle column Adapted to the U-shaped groove, the crescent plate is adapted to the arc groove, the rotating shaft of the toggle dial is arranged on the base, the toggle dial is meshed with a toggle gear, the rotating shaft of the toggle gear is arranged on the base, and the rotating shaft of the toggle gear is connected with a first bevel gear, the first bevel gear is meshed with a second bevel gear, the rotating shaft of the second bevel gear is arranged on the base and is provided with a second transmission gear, the second transmission gear is connected to the intermediate gear on the base through a chain, the intermediate gear is connected to the first rotating gear through a chain, and the intermediate gear is arranged on the side of the base.

8. A distribution network line loss measuring device according to claim 7, characterized in that: The telescopic wire rack includes a plurality of X-shaped articulated racks which are articulated in sequence. The X-shaped articulated racks at both ends are connected with lifting components. A hinged plate is arranged below the lifting component. One of the hinged plates is arranged in a translation slide slot. The other hinged plate is connected with a moving seat. A telescopic driving motor is arranged on the moving seat. The telescopic driving motor is connected with a telescopic driving gear. The telescopic driving gear is meshed with a rack on the upper side of the translation slot plate. The telescopic driving motor is electrically connected to the display controller.

9. A measurement method based on the distribution network line loss measurement device according to claim 8, characterized in that: The specific steps are as follows: Step S1: input the material and calibrated length of the cable to be tested into the display controller, one end of the cable to be tested passes through the synchronous diameter detection mechanism and is clamped, and the telescopic component is started to insert one end of the cable to be tested into the measurement body; Step S2: setting the detection mode according to the calibrated length of the cable to be tested; Step S3: Perform diameter detection at different axial positions according to the set detection mode to obtain diameter data, obtain the actual length value of the cable to be tested through the length detection mechanism, and transmit the diameter data and the actual length value to the measurement body, and the display controller calculates the average diameter value according to the diameter data; Step S4: After the diameter and length detection is completed, the other end of the cable is set on the measuring body and the detection power supply of the measuring body is started. The current passing through the measured cable is obtained through the current detection module of the measuring body, and the actual temperature is detected through the temperature detection module; Step S5: The measuring body calculates the line loss according to the average diameter value, the actual length value and the current value. The calculation formula is as follows: Among them, ΔP is the line loss value, I is the current value, ρ is the guide resistivity related to the material and actual temperature of the cable to be tested, L is the actual length value, and R is the average diameter value.

10. A measuring method according to claim 9, characterized in that: The detection mode includes short-line detection mode and long-line detection mode. When the calibrated length of the cable to be tested is greater than the set length, the long-line detection mode is started. When the calibrated length of the cable to be tested is less than or equal to the set length, the short-line detection mode is started. The detection process of short line detection mode is as follows: The intermittent start of the telescopic component is gradually shortened, and when the telescopic component reaches the stroke value, the mobile drive motor is started intermittently; The clamping drive motor of the synchronous clamping assembly is started in the intermittent gap, and the clamping drive motor stops when the pressure sensor at the top of each clamping rod reaches the set pressure, and the current intermittent position diameter data is determined according to the rotation angle of the clamping drive motor; The control display starts the radial electric push rod according to the diameter data of the first detection, so that the contact roller of the cable to be tested is set in the U-shaped guide plate for length detection; When the data difference of each pressure sensor exceeds the set value, it is determined that the cable to be tested is damaged, and the control display is displayed to stop the detection; The long-line detection mode detection process is as follows: The telescopic drive motor is started to unfold the telescopic wire rack and the lifting assembly is started to raise the height of the telescopic wire rack. The telescopic assembly is started intermittently to shorten gradually. When the telescopic assembly reaches the stroke value, the reciprocating drive motor is started to reciprocate the clamping cylinder. When the clamping cylinder moves forward to the front, the clamping is started. When the clamping cylinder moves back to the rear, the cable is released. At the same time, the translation assembly drives the telescopic wire rack to move intermittently under the drive of the reciprocating drive motor. The clamping drive motor of the synchronous clamping assembly is started in the intermittent gap, and the clamping drive motor stops when the pressure sensor at the top of each clamping rod reaches the set pressure, and the current intermittent position diameter data is determined according to the rotation angle of the clamping drive motor; The control display starts the radial electric push rod according to the diameter data of the first detection, so that the contact roller of the cable to be tested is set in the U-shaped guide plate for length detection; When the data difference of each pressure sensor exceeds the set value, it is determined that the cable to be tested is damaged, and the detection is stopped by controlling the display.

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