CN219552580U - Water-resistant test box for cable - Google Patents
Water-resistant test box for cable Download PDFInfo
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- CN219552580U CN219552580U CN202320508865.3U CN202320508865U CN219552580U CN 219552580 U CN219552580 U CN 219552580U CN 202320508865 U CN202320508865 U CN 202320508865U CN 219552580 U CN219552580 U CN 219552580U
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Abstract
The utility model discloses a cable water-resistant test box, which has the technical scheme that: the power transmission device comprises a power transmission cable, wherein one side of the power transmission cable is electrically connected with a switch, one side of the switch is sequentially and electrically connected with a voltage regulating module, a boosting rectifier, a current limiting resistor, an end socket and a direct current withstand voltage leakage test, and one side of the voltage regulating module is electrically connected with a control module and a timing module; the detection box body is provided with a first wire outlet hole on one side, a second wire outlet hole on the other side, two installation blocks are welded at the rear end of the detection box body, a movable plate is installed on each installation block, a plurality of wire hanging columns are welded at the end of each movable plate, the detection box body is controlled and adjusted through a control module, time is set through a timing module, detection wires are electrically connected through an end socket, and the first wire outlet hole and the second wire outlet hole penetrate through the detection wires and wind the detection wires through the wire hanging columns.
Description
Technical Field
The utility model relates to the field of cable testing, in particular to a cable water-resistant test box.
Background
The mining of colliery is not separated from the use of electric power, but colliery is abominable in the pit, has a lot of uncertain factors, consequently becomes very important to colliery power supply and electrical equipment's safety protection in pit, provides safer, the reliable operational environment for the staff through power supply in the pit and electrical equipment's safety protection in the pit to improve staff's work efficiency and working quality, for staff's personal safety makes the assurance. After water enters the high-voltage insulated cable, water dendrites appear in the long-term operation, namely, the water in the conductor is dendritic and enters the crosslinked polyethylene insulation, so that the insulation performance of the crosslinked polyethylene is reduced, and finally, the cable insulation breakdown is caused. One of the main paths for high pressure entry is entry of moisture or water from the cable sheath. The repaired power cable needs to be subjected to a water immersion test, and the purpose is as follows: and the underground working environment is simulated, the maintenance quality of the cable is checked, and the use is ensured to be reliable.
Disclosure of Invention
In view of the problems mentioned in the background art, it is an object of the present utility model to provide a water resistant test chamber for cables to solve the problems mentioned in the background art.
The technical aim of the utility model is realized by the following technical scheme:
the cable water-resistant test box comprises a power transmission cable, wherein one side of the power transmission cable is electrically connected with a switch, one side of the switch is electrically connected with a voltage regulating module, one side of the voltage regulating module is electrically connected with a boosting rectifier, one side of the boosting rectifier is electrically connected with a current limiting resistor, one side of the current limiting resistor is electrically connected with an end socket, one side of the end socket is electrically connected with a direct-current voltage-resistant leakage test, one side of the voltage regulating module is electrically connected with a control module, and one side of the control module is electrically connected with a timing module;
the detection box body is characterized by further comprising a detection box body, a first wire outlet hole is formed in one side of the detection box body, a second wire outlet hole is formed in the other side of the detection box body, two installation blocks are welded at the rear end of the inside of the detection box body, a movable plate is slidably installed on the two installation blocks, and a plurality of wire hanging columns are welded at the end parts of the movable plate.
Through the technical scheme, when the power transmission device is used, the control and adjustment of the power transmission process and the control and adjustment of the detection process are realized through the control module, the accurate control is realized, the detection time is set through the timing module, the control and adjustment of the voltage are realized through the voltage regulation module and the boost rectification, the voltage is used for stabilizing the voltage and converting the alternating voltage into the direct current voltage, then the electric connection of the detection cable is realized through the end socket, the detection processing is carried out on the detection cable through the direct current withstand voltage leakage test, the threading of the detection cable is realized through the first wire outlet hole and the second wire outlet hole on two sides of the detection box body, the power connection is convenient, the winding of the cable is realized through the wire hanging column on the movable plate, and then the detection cable is put into the detection box body through the movable plate, so that the water-resistant detection is realized.
Preferably, one side of the end socket is electrically connected with a discharge ball gap, one side of the discharge ball gap is electrically connected with a flaw detector, the other side of the discharge ball gap is electrically connected with another current limiting resistor, and the boost rectifying resistor and the current limiting resistor are electrically connected with a grounding end.
By adopting the technical scheme, the setting of the discharge ball gap and the flaw detector is used for realizing safety monitoring of equipment, detecting the current required by a cable to be inspected, selecting overcurrent and realizing grounding protection through a current limiting resistor and a grounding end.
Preferably, the bottom end of the detection box body is welded with a grounding column, and the grounding end is electrically connected with the grounding column.
Through adopting above-mentioned technical scheme, the setting of grounding post is convenient for realize carrying out ground treatment to the detection box, realizes safety protection to the grounding post needs to be buried deeply in the underground.
Preferably, the first wire outlet hole and the second wire outlet hole are respectively embedded with a first sealing ring and a second sealing ring, and the top of the detection box body is hinged with a box cover.
Through adopting above-mentioned technical scheme, the leakproofness can be kept in the setting of first sealing ring and second sealing ring to and realize fixing the tip of detecting the cable, and the setting of case lid realizes carrying out the closing cap processing to the detection box.
Preferably, two sides of the mounting blocks are provided with sliding grooves, and the bottom ends of the sliding grooves are positioned in the middle of the mounting blocks.
Through adopting above-mentioned technical scheme, the setting of sliding tray is convenient for the fly leaf to connect to the bottom of sliding tray is not in the bottom of installation piece, prevents to detect the cable bottoming.
Preferably, the back of the movable plate is provided with a clamping groove, the clamping groove is matched with the mounting block and the sliding groove, and the movable plate is movably connected to the mounting block through the clamping groove.
Through adopting above-mentioned technical scheme, the setting of block groove is convenient for the fly leaf to install and connects the upper portion at the installation piece, through the block connection, keeps stability.
Preferably, a plurality of detection cables are wound on the wire hanging columns, two ends of each detection cable respectively penetrate through the first wire outlet holes and the second wire outlet holes, and two ends of each detection cable are located in the first sealing ring and the second sealing ring.
Through adopting above-mentioned technical scheme, the winding of detection cable can keep the wholeness of detection cable on hanging the line post, wears to draw the tip of detection cable through first wire outlet and second wire outlet realization to seal the protection through first sealing ring and second sealing ring.
Preferably, the height of the first wire outlet hole and the second wire outlet hole is close to 80cm on the ground, the distance between two ends of the detection cable and the box body is kept 80cm parallel to the ground, the detection box body conveys water flow inwards through an external water pump, and the external water pump is used for injecting water through the box cover at the top of the detection box body, or a water inlet is formed in the outer wall of the detection box body for injecting water.
Through adopting above-mentioned technical scheme, the high setting of first wire hole and second wire hole is convenient for prevent that rivers from soaking the tip of detection cable to prevent that rivers from flowing out, and realize inputting rivers.
In summary, the utility model has the following advantages:
when the detection box is used, the control and adjustment of the transmission process and the control and adjustment of the detection process are realized through the control module, the accurate control is realized, the detection time is set through the timing module, the control and adjustment of the voltage are realized through the voltage regulation module and the boosting rectification, the voltage is used for stabilizing the voltage and converting the alternating voltage into the direct-current voltage, then the electric connection of the detection cable is realized through the end socket, the detection processing is carried out through the direct-current withstand voltage leakage test, the threading of the detection cable is realized through the first wire outlet hole and the second wire outlet hole on two sides of the detection box body, the power connection is convenient, the winding of the cable is realized through the wire hanging column on the movable plate, and then the detection cable is put into the detection box body through the movable plate, so that the water resistance detection is realized.
Drawings
FIG. 1 is a schematic diagram of the system architecture of the present utility model;
FIG. 2 is a right side schematic view of the present utility model;
FIG. 3 is a left side schematic view of the present utility model;
FIG. 4 is a schematic view of a mounting block and a fly plate structure of the present utility model;
fig. 5 is a schematic structural view of the mounting block of the present utility model.
Reference numerals: 1. detecting a box body; 2. a first wire outlet hole; 3. a second wire outlet hole; 4. a case cover; 5. a grounding column; 6. a mounting block; 7. a sliding groove; 8. a movable plate; 9. a clamping groove; 10. and (5) hanging a wire column.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples
Referring to fig. 1-5, a cable water-resistant test box comprises a power transmission cable, wherein one side of the power transmission cable is electrically connected with a switch, one side of the switch is electrically connected with a voltage regulating module, one side of the voltage regulating module is electrically connected with a boosting rectifier, one side of the boosting rectifier is electrically connected with a current limiting resistor, one side of the current limiting resistor is electrically connected with an end socket, one side of the end socket is electrically connected with a direct current withstand voltage leakage test, one side of the voltage regulating module is electrically connected with a control module, and one side of the control module is electrically connected with a timing module;
the novel wire hanging device is characterized by further comprising a detection box body 1, wherein a first wire outlet hole 2 is formed in one side of the detection box body 1, a second wire outlet hole 3 is formed in the other side of the detection box body 1, two mounting blocks 6 are welded at the rear end of the interior of the detection box body 1, a movable plate 8 is slidably mounted on the two mounting blocks 6, and a plurality of wire hanging posts 10 are welded at the end parts of the movable plate 8.
When the utility model is used, the control and adjustment of the transmission process and the control and adjustment of the detection process are realized through the control module, the precise control is realized, the detection time is set through the timing module, the control and adjustment of the voltage are realized through the voltage regulation module and the boosting rectification, the voltage is used for stabilizing the voltage and converting the alternating voltage into the direct-current voltage, then the electric connection of the detection cable is realized through the end socket, the detection processing is realized through the direct-current withstand voltage leakage test, the threading of the detection cable is realized through the first wire outlet hole 2 and the second wire outlet hole 3 on two sides of the detection box body 1, the connection of electricity is facilitated, the winding of the cable is realized through the wire hanging column 10 on the movable plate 8, and then the detection cable is put into the detection box body 1 through the movable plate 8, so that the water-resistant detection is realized.
In this embodiment, preferably, one side of the end socket is electrically connected with a discharge ball gap, one side of the discharge ball gap is electrically connected with a flaw detector, the other side of the discharge ball gap is electrically connected with another current limiting resistor, and the boost rectifying resistor and the current limiting resistor are electrically connected with a grounding terminal. The device has the advantages that the setting of the discharge ball gap and the flaw detector is used for realizing safety monitoring of equipment, detecting current required by a detected cable, selecting overcurrent and realizing grounding protection through the current limiting resistor and the grounding end.
In this embodiment, preferably, a grounding post 5 is welded at the bottom end of the detection box 1, and the grounding end is electrically connected with the grounding post 5. The effect is, the setting of grounding post 5 is convenient for realize carrying out the ground treatment to detecting box 1, realizes safety protection to grounding post 5 needs to be buried deeply in the underground.
In this embodiment, preferably, the first wire outlet hole 2 and the second wire outlet hole 3 are respectively embedded with a first sealing ring and a second sealing ring, and the top of the detection box 1 is hinged with a box cover 4. The effect is, the setting of first sealing ring and second sealing ring can keep the leakproofness to and realize fixing the tip of detection cable, and the setting of case lid 4 realizes carrying out the closing cap processing to detection box 1.
In this embodiment, it is preferable that two sides of the two mounting blocks 6 are provided with sliding grooves 7, and the bottom ends of the sliding grooves 7 are located in the middle of the mounting blocks 6. The effect is, the setting of sliding tray 7 is convenient for fly leaf 8 to connect to the bottom of sliding tray 7 is not in the bottom of installation piece 6, prevents to detect the cable bottoming.
In this embodiment, preferably, the back of the movable plate 8 is provided with a locking groove 9, the locking groove 9 is matched with the mounting block 6 and the sliding groove 7, and the movable plate 8 is movably connected to the mounting block 6 through the locking groove 9. The effect is, the setting of block groove 9 is convenient for fly leaf 8 to install and connect in the upper portion of installation piece 6, through the block connection, keeps stability.
In this embodiment, preferably, a plurality of wire hanging columns 10 are wound with a detection wire, two ends of the detection wire respectively penetrate through the first wire outlet hole 2 and the second wire outlet hole 3, and two ends of the detection wire are located in the first sealing ring and the second sealing ring. The effect is, the winding of detection cable is on hanging wire post 10, can keep the wholeness of detection cable, wears to draw the tip of detection cable through first wire outlet 2 and second wire outlet 3 realization to seal the protection through first sealing ring and second sealing ring.
In this embodiment, preferably, the heights of the first wire outlet hole 2 and the second wire outlet hole 3 are set to be close to 80cm on the ground, the distance between two ends of the detection cable and the box body is kept to be 80cm parallel to the ground, the detection box body 1 conveys water inwards through an external water pump, and the external water pump is used for injecting water through the box cover 4 at the top of the detection box body 1, or a water inlet is formed in the outer wall of the detection box body 1 for injecting water. The effect is, the high setting of first wire hole 2 and second wire hole 3 is convenient for prevent that rivers from soaking the tip of detection cable to prevent that rivers from flowing out, and realize inputting rivers.
The specific detection steps are as follows:
preparation before experiments
(1) When the equipment is moved, severe vibration is avoided, and the equipment must be kept still for 2 hours after being moved for use;
(2) Before the equipment is used, the shell must be reliably grounded, the grounding column 5 is buried underground, and the grounding resistance must not be greater than 4 ohm;
(3) Before use, the inside and outside of the detection box body 1 should be carefully checked to check whether screws at all parts are loosened, so as to avoid leakage and current increase caused by tip discharge;
(4) A wire is used for connecting the grounding end of the discharging rod with the grounding column 5 and is firmly fixed by a screw;
(5) The experimenters should make different work, define the method of mutual connection, and have special personnel to monitor the site safety and observe the state of the tested cable.
2. Cable flaw detection test
(1) The short circuit board is reliably short-circuited by copper nuts between the end sockets on the inner wiring board surface;
(2) Connecting a cable core wire to be detected to a flaw detector, detecting short circuit of other core wires, a screen hidden wire and a ground wire of the cable, connecting the short circuit to a grounding end, and adjusting a discharge ball gap to 1-2mm;
(3) Connecting a plug of the power transmission line to a socket at the bottom of a wiring panel of the detection box body 1;
(4) The low-voltage part is electrified, the green light is turned on, the voltage regulator hand wheel is rotated to the zero position, and the yellow light is turned on to indicate that the power transmission boosting state is entered;
(5) Selecting the position of the multiplying power switch according to the current required by the detected cable; setting an action value of the overcurrent relay;
(6) Pressing a start button, closing a main contactor, powering up a voltage regulating module, turning off a green light and turning on a red light, detecting alarm sound in the box body 1, flashing the alarm light, and performing sound-light alarm and automatic stop after about 10-15 seconds, wherein the voltage can be boosted for flaw detection;
(7) Rotating the voltage regulator hand wheel clockwise, looking at the indication of the high-voltage meter, and gradually boosting at a boosting speed of 1kV per second until the ball gap is discharged;
(8) Checking along the length of the cable to determine the damage position of the cable, wherein after discharging, the damage position of the cable is not easy to be found, the ball gap can be properly enlarged, the discharging intensity is increased, and the fault point is more clearly exposed; afterwards, the pressure regulator hand wheel is zeroed, and a stop button is pressed down; then the discharging rod is used for reliably discharging all the positions (a current limiting resistor end, a transformer ball, a discharging ball, a capacitor and a cable to be detected);
(9) Repeating the above procedures until all damage parts of each core wire are clear;
(10) If the cable core wire is broken, the two ends of the core wire are respectively connected to a high-voltage terminal and a grounding terminal, and the other parts are removed, so that the operation can be performed according to the program;
3. cable DC withstand voltage and leakage current test
(1) Disconnecting the shorting plate between the termination sockets, connecting the shorting plate between one termination socket and the high voltage terminal;
(2) And connecting the cable core wire of which the withstand voltage is required to be measured to a direct-current withstand voltage leakage test, and connecting other core wires, shielding wires and grounding wires to a grounding end after short-circuiting.
(3) According to the requirements of the tested cable, time setting is carried out, and for a common cable, a timing module is set to be over 5 minutes;
(4) The flaw detection program is pressed for boosting, when the voltage reaches the required voltage value, a timing button is pressed, automatic timing is performed, when the voltage reaches 5 minutes, an audible and visual alarm is given, a boosting hand wheel is reset, the audible and visual alarm is stopped, and the timing button is disconnected;
(5) The voltage withstand test is qualified when breakdown or flicker does not occur within a specified time, if the breakdown or flicker occurs, the voltage regulator hand wheel is immediately zeroed, and the power supply is cut off;
(6) In the direct-current withstand voltage time, the current leakage value of the cable at the moment can be read out on a microammeter;
(7) Exchanging other core wires, repeating the steps until the whole cable is tested;
analysis of results
If the ammeter of the pressing tester has current flowing, the cable is indicated to have insulation breakdown or water leakage; on the contrary, the cable has good water resistance and insulation.
Notice matters
(1) The connection of the test cable to the high-voltage box terminal block must be carried out under no-voltage output. The power supply should be turned off immediately after each test (the voltage regulating hand wheel on the low voltage control box rotates anticlockwise to the bottom, and the stop button is pressed), and the discharging rod is used for fully discharging the cable and the high voltage part everywhere.
(2) The operator should wear insulating rubber shoes, wear insulating gloves, and the job site prohibits irrelevant personnel from approaching. In the high-pressure test process, the human body can not be in direct contact with the high-pressure connected parts.
(3) In the test process, if electricity leakage occurs, the overcurrent protection is automatically powered off, and electricity is transmitted after the reason is found out.
(4) The speed of the boost cannot be too fast and sudden pressurization is prevented. The voltage regulator hand wheel does not strictly forbid abrupt power transmission and power failure at zero position.
(5) After 1 year of use, the voltage withstand test should be carried out on the transformer in time, and the voltage withstand is not lower than 30kV/2.5min.
(6) The surface of the discharged copper ball was carefully polished smooth with zero gauge gauze at regular intervals (depending on the intensity of the device used) and kept clean and dust free from the surface and surrounding.
(7) The use effect of the device depends on the careful maintenance of a user, and the operation experience is continuously accumulated, so that the relation between the ball gap spacing and the discharge voltage of different cables is mastered.
Of particular note is: in the cable withstand voltage test process, the voltage boosting process should be uniform and slow, and the voltage dropping process should be uniform and slow. Meanwhile, a protection resistor is added at the high-voltage output end. Otherwise, high voltages can easily damage the instrument. The meter ground must be good. The ground grid or stake should be selected. The test should not be performed without ground.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. Cable water proof test case, including power transmission cable, its characterized in that: the power transmission cable is characterized in that one side of the power transmission cable is electrically connected with a switch, one side of the switch is electrically connected with a voltage regulating module, one side of the voltage regulating module is electrically connected with a boosting rectifier, one side of the boosting rectifier is electrically connected with a current limiting resistor, one side of the current limiting resistor is electrically connected with an end socket, one side of the end socket is electrically connected with a direct current withstand voltage leakage test, one side of the voltage regulating module is electrically connected with a control module, and one side of the control module is electrically connected with a timing module;
the novel wire hanging device is characterized by further comprising a detection box body (1), wherein a first wire outlet hole (2) is formed in one side of the detection box body (1), a second wire outlet hole (3) is formed in the other side of the detection box body (1), two mounting blocks (6) are welded at the rear end of the inside of the detection box body (1), a movable plate (8) is slidably mounted on each mounting block (6), and a plurality of wire hanging columns (10) are welded at the end parts of the movable plate (8).
2. The cable water proof test box of claim 1, wherein: one side of the end socket is electrically connected with a discharge ball gap, one side of the discharge ball gap is electrically connected with a flaw detector, the other side of the discharge ball gap is electrically connected with another current limiting resistor, and the boosting rectifying resistor and the current limiting resistor are electrically connected with a grounding end.
3. The cable water proof test box of claim 2, wherein: the bottom end of the detection box body (1) is welded with a grounding column (5), and the grounding end is electrically connected with the grounding column (5).
4. The cable water proof test box of claim 1, wherein: the first wire outlet hole (2) and the second wire outlet hole (3) are respectively embedded with a first sealing ring and a second sealing ring, and the top of the detection box body (1) is hinged with a box cover (4).
5. The cable water proof test box of claim 1, wherein: sliding grooves (7) are formed in two sides of the two mounting blocks (6), and the bottom ends of the sliding grooves (7) are positioned in the middle of the mounting blocks (6).
6. The cable water proof test box of claim 5, wherein: the back of the movable plate (8) is provided with a clamping groove (9), the clamping groove (9) is matched with the mounting block (6) and the sliding groove (7), and the movable plate (8) is movably connected to the mounting block (6) through the clamping groove (9).
7. The cable water proof test chamber of claim 4, wherein: and a plurality of wire hanging posts (10) are wound with a detection wire, two ends of the detection wire respectively penetrate through the first wire outlet holes (2) and the second wire outlet holes (3), and two ends of the detection wire are positioned in the first sealing ring and the second sealing ring.
8. The cable water proof test chamber of claim 7, wherein: the height setting of first wire hole (2) with the height setting of second wire hole (3) is close to ground 80cm, the both ends of detection cable are on a parallel with ground and box apart from keeping 80cm, detect box (1) inwards carry rivers through outside water pump, and outside water pump is through detect box (1) top case lid (4) carry out the water injection, perhaps be seted up the water inlet and carry out the water injection on the outer wall of detection box (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320508865.3U CN219552580U (en) | 2023-03-16 | 2023-03-16 | Water-resistant test box for cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320508865.3U CN219552580U (en) | 2023-03-16 | 2023-03-16 | Water-resistant test box for cable |
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| Publication Number | Publication Date |
|---|---|
| CN219552580U true CN219552580U (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320508865.3U Active CN219552580U (en) | 2023-03-16 | 2023-03-16 | Water-resistant test box for cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117508880A (en) * | 2024-01-05 | 2024-02-06 | 贵州博林药业有限公司 | Constant-temperature anti-collision storage and transportation equipment for lysine-pirin container for injection |
-
2023
- 2023-03-16 CN CN202320508865.3U patent/CN219552580U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117508880A (en) * | 2024-01-05 | 2024-02-06 | 贵州博林药业有限公司 | Constant-temperature anti-collision storage and transportation equipment for lysine-pirin container for injection |
| CN117508880B (en) * | 2024-01-05 | 2024-04-02 | 贵州博林药业有限公司 | Constant-temperature anti-collision storage and transportation equipment for lysine-pirin container for injection |
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