CN212157874U - Automatic control temperature rise dehumidification moisture absorption device for mining seven-core cable - Google Patents
Automatic control temperature rise dehumidification moisture absorption device for mining seven-core cable Download PDFInfo
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- CN212157874U CN212157874U CN202020802673.XU CN202020802673U CN212157874U CN 212157874 U CN212157874 U CN 212157874U CN 202020802673 U CN202020802673 U CN 202020802673U CN 212157874 U CN212157874 U CN 212157874U
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Abstract
The invention discloses a self-control temperature rise dehumidification moisture absorption device for a mining seven-core cable, which comprises a 10KV alternating current power supply, a 10KV current rise transformer, a current converter, a 50V nine-pulse direct current output device, a 2000V direct current output device and a sealed dehumidification moisture absorption drying box, wherein the 10KV alternating current power supply is sequentially connected with the 10KV current rise transformer and the current converter, the current converter is simultaneously connected with the 50V nine-pulse direct current output device and the 2000V direct current output device, and the 50V nine-pulse direct current output device and the 2000V direct current output device are both connected with a lead core of the mining seven-core cable. The heating device is reasonable in structural design, and the lead is heated under the action of direct current to achieve the heating effect by electrifying the seven-core cable of the mining coal machine. The temperature is reasonably controlled, so that the gasification of moisture is facilitated, the cable insulation is not damaged, and the temperature-raising and dehumidifying device is suitable for the coal mining machine seven-core cable with the length of 1000 meters.
Description
Technical Field
The invention belongs to the technical field of mine cable dehumidification, and particularly relates to a mine seven-core cable automatic control temperature rise dehumidification moisture absorption device.
Background
The mining operation environment is complex and severe, safety is the most important requirement, the requirements on the reliability and safety of matched equipment are high, and correspondingly, high requirements are also provided for cables used by the equipment, namely, the mining comprehensive cable has a series of functions of flame retardance, collision resistance, rolling resistance, tensile resistance and the like on the premise that one cable meets multiple functions. The mining seven-core cable integrates wires and cables with different functions, so that the wiring of the mining equipment is safer and more convenient. The moisture-proof work of the cables is enhanced in the storage, transportation, laying and accessory manufacturing processes of the mining seven-core cables.
The reliability of the insulating property of the mining cable is an important premise for ensuring the safe power supply of a mine, and in the actual production process, the rubber sleeve cable and the power cable of the coal mining machine are affected by factors such as underground air humidity, cable sweating and the like, and the insulation resistance value of the rubber sleeve cable and the power cable of the coal mining machine is easy to reduce due to moisture, so that electromechanical faults such as electric leakage, short circuit and the like are induced.
Before the damp cable does not discharge, the fault phenomenon is hidden and difficult to check, the damp cable runs in a low-insulation state for a long time, local overheating or large-area insulation aging and damage are easily caused, the repair is difficult, the service life of the damp cable is greatly reduced, huge manpower and material resources are often consumed when similar faults are processed, efficient and orderly production organization is influenced to a large extent, and the production cost is increased.
In the prior art, an alternating current booster of an alternating current electric welding machine is used for heating and dehumidifying a cable, the alternating current booster is influenced by too large inductive reactance, the action length is limited (about 50 meters), and the cable is not suitable for a mine cable.
Disclosure of Invention
In order to solve the problems, the invention provides a self-control temperature-rising, dehumidifying and moisture-absorbing device for a mining seven-core cable.
The invention is realized by the following steps: a self-control temperature-rising, dehumidifying and moisture-absorbing device for a mining seven-core cable comprises a 10KV alternating-current power supply, a 10KV current-rising transformer, a current converter, a 50V nine-pulse direct-current output device, a 2000V direct-current output device and a sealed type dehumidifying and moisture-absorbing drying box, wherein the 10KV alternating-current power supply is sequentially connected with the 10KV current-rising transformer and the current converter, the current converter is simultaneously connected with the 50V nine-pulse direct-current output device and the 2000V direct-current output device, the 50V nine-pulse direct-current output device and the 2000V direct-current output device are both connected with a lead core of the mining seven-core,
the 10KV alternating current power supply is an alternating current power grid,
the described up-flow transformer is composed of 5 windings, two groups of high-voltage three groups of low-voltage, 10KV/50V/500A, 10KV/50V/300A, 10KV/50V/100A and 10KV/2000V,
the converter inverts the alternating current into direct current, wherein each winding of three windings outputting 50V is three-phase, a nine-pulse rectifying device is matched with a seven-core cable, two phases are no-load,
seven of the nine-pulse direct current output device are connected with seven-core wires of a mining seven-core cable, two phases of the nine-pulse direct current output device are unloaded,
the sealed dehumidification moisture absorption drying box is a fully-sealed control cabin body and is used for containing the mining seven-core cable needing dehumidification.
The 50V nine-pulse DC output device comprises a 50V/500A three-phase adjustable DC power supply, a 50V/300A three-phase adjustable DC power supply and a 50V/100A single-phase adjustable DC power supply, the 50V/500A three-phase adjustable direct-current power supply, the 50V/300A three-phase adjustable direct-current power supply and the 50V/100A single-phase adjustable direct-current power supply are respectively connected with a three-phase 500A direct-current contact module, a three-phase 300A direct-current contact module and a single-phase 100A direct-current contact module, the 2000V direct current output device comprises a 2000V direct current power supply, the 2000V direct current power supply is connected with a 7-path high-voltage controllable switch module, the three-phase 500A direct current contact module, the three-phase 300A direct current contact module and the single-phase 100A direct current contact module are connected with a lead core of the mining seven-core cable, and the 7-path high-voltage controllable switch module is also connected with the lead core of the mining seven-core cable.
The mining seven-core cable insulation layer is connected with a 7-circuit micro-current transformer, the 7-circuit micro-current transformer is connected with a current acquisition module, and the high-voltage switch, the direct-current contactor control module and the current acquisition module are all connected with a main control computer.
Be provided with a plurality of dehumidification unit on the seven core cables of mining coal machine, the dehumidification unit include vacuum pump, temperature and humidity sensor and pressure sensor, vacuum pump, temperature and humidity sensor and pressure sensor all be provided with wireless transmission module, the main control computer also be provided with wireless transmission module, the wireless transmission module of main control computer and vacuum pump, temperature and humidity sensor and pressure sensor's wireless transmission module wireless connection.
The sealed dehumidification moisture absorption drying cabinet in be provided with a plurality of heating device, sealed dehumidification moisture absorption drying cabinet in still be provided with temperature and humidity sensor, pressure sensor and vacuum pump, heating device, vacuum pump, temperature and humidity sensor and the pressure sensor of sealed dehumidification moisture absorption drying cabinet all are provided with wireless transmission module and master control computer wireless connection.
The sealed dehumidification moisture absorption drying cabinet in be provided with the cable car, the cable car include the cable car frame, the cable car frame on be provided with spool, winding motor, the spool rotatory under winding motor's drive, the spool be used for the winding to place the seven-core cable of mining coal machine.
The bottom of the cable car is provided with a cable car rotating wheel, so that the cable car can move to transfer the seven-core cable of the coal mining machine to be dehumidified into the sealed dehumidifying and moisture-absorbing drying box.
The three-phase 500A direct current contact module, the three-phase 300A direct current contact module and the single-phase 100A direct current contact module are arranged in the sealed dehumidification and moisture absorption drying box, clamping rings are arranged at the positions where the three-phase 500A direct current contact module, the three-phase 300A direct current contact module and the single-phase 100A direct current contact module are connected with the seven-core cable of the mining coal machine, and the clamping rings are clamped on the seven-core cable of the mining coal machine.
The snap ring comprises a snap ring body and a locking part, wherein the snap ring body is in a circular ring shape, and the locking part comprises a tongue part and a fixing screw which are fixedly connected with the snap ring body.
The sealed dehumidification moisture absorption drying cabinet divide into two storehouses in malleation storehouse and negative pressure storehouse again, wherein vacuum pump, snap ring setting are in negative pressure storehouse body one side, cable car, temperature and humidity sensor, pressure sensor, heating device set up in malleation storehouse one side.
The invention has the beneficial effects that: the invention has reasonable structural design, (1) the seven-core cables of the mining coal machine are connected with the three-phase 500A direct current contact module, the three-phase 300A direct current contact module and the single-phase 100A direct current contact module, and according to the heat effect of current in the conductor: q ═ I２In the RT formula, I is a passing conductor current (A); r is the resistance (omega) of the conductor; t is the duration(s) of the current. Applying large current to the cable to perform short-circuit heating, and discharging moisture in the wire core through heating; (2) the 2000V direct-current power supply is connected with the 7-path high-voltage controllable switch module and then connected with the seven-core cable of the mining coal machine, and the insulation resistance value of the seven-core cable of the mining coal machine is detected through the 7-path micro-current transformer dehumidification unit and the current acquisition module; (3) raising the initial test value of the insulation resistance value of the current dehumidification, testing the direct current resistance value once (with adjustable time) in 5 minutes in the dehumidification process, finishing the temperature rise dehumidification when the direct current resistance value reaches the qualified requirement, and printing a report through a master control computer; (4) the DC dehumidification voltage 50v and the DC resistance value test voltage 2000v are in the same loop, and the DC temperature rise dehumidification and the measurement of the process value and the standard value of the initial value of the DC resistance value are completed simultaneously, seven DC temperature rise three-phase nine-pulse heavy current and the improvement of the insulation resistance value under two DC voltages in three insulation states reach the qualified standard, so as to automatically control the time used in the whole process of the DC temperature rise dehumidification; (5) carrying out direct-current temperature rise and dehumidification on the seven-core cable of the mining coal cutter, wherein the length of the seven-core cable can reach 1000 meters by using direct-current temperature rise; (6) the sealed dehumidifying and moisture-absorbing drying box is of a fully-sealed cabin structure and comprises a vacuum pump, a temperature and humidity sensor and a pressure sensor, wherein the vacuum pump can carry away moisture discharged from a wire core and can simultaneously carry away the moistureThe content of moisture in the discharged air is detected through a temperature and humidity sensor, and the vacuum degree in the dehumidification unit is detected through a pressure sensor; (7) a wireless transmission module of the master control computer is wirelessly connected with a vacuum pump, a heating device, a temperature and humidity sensor and a wireless transmission module of a pressure sensor, so that the automatic control of the temperature, the humidity, the vacuum degree and the drying degree in the drying shelter is realized; (8) the clamping ring is clamped and sleeved on two wiring ends of the seven-core cable of the mining coal machine, one end of the cable is locked, and moisture in the cable is favorably pumped out during vacuumizing.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a connection structure of a 50V nine-pulse direct current output device, a 2000V direct current output device and a seven-core cable of a coal mining machine, which are disclosed by the invention;
FIG. 3 is a schematic diagram of the dehumidification and moisture absorption principle of the 50V nine-pulse DC output device according to the present invention;
FIG. 4 is a schematic structural view of a sealed dehumidifying and moisture-absorbing drying cabinet according to the present invention;
FIG. 5 is a schematic diagram of a snap ring structure according to the present invention.
In the figure: the device comprises a sealed dehumidification and moisture absorption drying box, a cable car frame, a winding shaft, a winding motor, a cable car rotating wheel, a direct-current power supply device, a dehumidification unit, a vacuum pump, a temperature and humidity sensor, a pressure sensor, a wireless transmission module, a 9-clamping ring, a 901-clamping ring body, a 902-locking part, a 9021-tongue part, a 9022-fixing screw and a heating device, wherein the sealed dehumidification and moisture absorption drying box comprises the sealed dehumidification and moisture absorption drying box, the cable car frame, the winding shaft 202, the winding motor 203, the cable car rotating wheel 204, the direct-current.
Detailed Description
In order to clearly understand the technical scheme of the invention, the invention is further explained with reference to the attached drawings.
A self-control temperature-rising, dehumidifying and moisture-absorbing device for a mining seven-core cable comprises a 10KV alternating-current power supply, a 10KV current-rising transformer, a current converter, a 50V nine-pulse direct-current output device, a 2000V direct-current output device and a sealed type dehumidifying and moisture-absorbing drying box 1 as shown in figure 1, wherein the 10KV alternating-current power supply is sequentially connected with the 10KV current-rising transformer and the current converter, the current converter is simultaneously connected with the 50V nine-pulse direct-current output device and the 2000V direct-current output device, the 50V nine-pulse direct-current output device and the 2000V direct-current output device are both connected with a lead core of the mining seven-,
the 10KV alternating current power supply is an alternating current power grid,
the described up-flow transformer is composed of 5 windings, two groups of high-voltage three groups of low-voltage windings, 10KV/50V/500A, 10KV/50V/300A, 10KV/50V/100A and 10KV/2000V, in which 10KV and 2000V are high-voltage windings, 50V is low-voltage winding to implement conversion from 10KV to 50V and 2000V,
the converter inverts the alternating current into direct current, wherein each winding of three windings outputting 50V is three-phase, a nine-pulse rectifying device is matched with a seven-core cable, two phases are no-load,
seven of the nine-pulse direct current output device are connected with seven-core wires of a mining seven-core cable, two phases of the nine-pulse direct current output device are unloaded, the two phases of the nine-pulse direct current output device are unloaded and need to be matched with corresponding resistors,
the sealed dehumidification and moisture absorption drying box 1 is a fully sealed control cabin body, and is used for containing a mine seven-core cable needing dehumidification, as shown in fig. 4.
As shown in FIG. 2, the 50V nine-pulse DC output device comprises a 50V/500A three-phase adjustable DC power supply, a 50V/300A three-phase adjustable DC power supply, a 50V/100A single-phase adjustable DC power supply, the 50V/500A three-phase adjustable direct-current power supply, the 50V/300A three-phase adjustable direct-current power supply and the 50V/100A single-phase adjustable direct-current power supply are respectively connected with a three-phase 500A direct-current contact module, a three-phase 300A direct-current contact module and a single-phase 100A direct-current contact module, the 2000V direct current output device comprises a 2000V direct current power supply, the 2000V direct current power supply is connected with a 7-path high-voltage controllable switch module, the three-phase 500A direct current contact module, the three-phase 300A direct current contact module and the single-phase 100A direct current contact module are connected with a lead core of the mining seven-core cable, and the 7-path high-voltage controllable switch module is also connected with the lead core of the mining seven-core cable.
The mining seven-core cable insulation layer is connected with a 7-circuit micro-current transformer, the 7-circuit micro-current transformer is connected with a current acquisition module, and the high-voltage switch, the direct-current contactor control module and the current acquisition module are all connected with a main control computer.
As shown in fig. 3, be provided with a plurality of dehumidification unit 4 on the seven-core cable of mining coal machine, the dehumidification unit include vacuum pump 5, temperature and humidity sensor 6 and pressure sensor 7, vacuum pump 5, temperature and humidity sensor 6 and pressure sensor 7 all be provided with wireless transmission module 8, the master control computer also be provided with wireless transmission module, wireless transmission module and vacuum pump 5 of master control computer, temperature and humidity sensor 6 and pressure sensor 7's wireless transmission module 8 wireless connection.
As shown in fig. 4, a plurality of heating devices 10 are arranged in the sealed dehumidification and moisture absorption drying box 1, a temperature and humidity sensor 6, a pressure sensor 7 and a vacuum pump 5 are further arranged in the sealed dehumidification and moisture absorption drying box, and the heating devices 10, the vacuum pump 56, the temperature and humidity sensor 6 and the pressure sensor 7 of the sealed dehumidification and moisture absorption drying box 1 are all provided with a wireless transmission module 8 to be wirelessly connected with a master control computer. The radio module may be implemented using a 2.4G zigbee radio transmission network.
The sealed dehumidification moisture absorption drying cabinet 1 in be provided with cable car 2, cable car 2 include cable car frame 201, cable car frame 201 on be provided with spool 202, winding motor 203, spool 202 rotatory under winding motor 203's drive, spool 202 be used for the winding to place the seven-core cable of mining coal machine.
The bottom of the cable car 2 is provided with a cable car rotating wheel 204, so that the cable car 1 can move to transfer the seven-core cable of the coal mining machine to be dehumidified into the sealed dehumidifying and moisture-absorbing drying box.
The three-phase 500A direct current contact module, the three-phase 300A direct current contact module and the single-phase 100A direct current contact module are arranged in the sealed dehumidification and moisture absorption drying box, a clamping ring 5 is arranged at the position where the three-phase 500A direct current contact module, the three-phase 300A direct current contact module and the single-phase 100A direct current contact module are connected with a seven-core cable of the mining coal machine, and the clamping ring 9 is clamped and sleeved on the seven-core cable of the mining coal machine.
The snap ring 9 comprises a snap ring body 901 and a locking part, wherein the snap ring body 901 is annular, and the locking part 902 comprises a tongue part 9021 fixedly connected with the snap ring body and a fixing screw 9022.
The sealed dehumidification moisture absorption drying box 1 is divided into a positive pressure cabin and a negative pressure cabin, wherein the vacuum pump 5 and the clamping ring 9 are arranged on one side of the negative pressure cabin, and the cable car 2, the temperature and humidity sensor 6, the pressure sensor 7 and the heating device 10 are arranged on one side of the positive pressure cabin.
According to the invention, alternating current is converted into direct current through the high-power rectifying and current converting device and is input into a lead of the cable to be dehumidified, so that the lead is heated under the action of the direct current to achieve a temperature rise effect. The temperature is reasonably controlled, so that the gasification of moisture is facilitated, the cable insulation is not damaged, and the temperature-raising and dehumidifying device is suitable for the coal mining machine seven-core cable with the length of 1000 meters.
The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present invention are included in the scope of the present invention.
Claims (10)
1. A self-control temperature-rising, dehumidifying and moisture-absorbing device for a mining seven-core cable is characterized by comprising a 10KV alternating-current power supply, a 10KV current-rising transformer, a current converter, a 50V nine-pulse direct-current output device, a 2000V direct-current output device and a sealed type dehumidifying and moisture-absorbing drying box, wherein the 10KV alternating-current power supply is sequentially connected with the 10KV current-rising transformer and the current converter, the current converter is simultaneously connected with the 50V nine-pulse direct-current output device and the 2000V direct-current output device, the 50V nine-pulse direct-current output device and the 2000V direct-current output device are both connected with a lead core of the mining seven-core cable,
the 10KV alternating current power supply is an alternating current power grid,
the described up-flow transformer is composed of 5 windings, two groups of high-voltage three groups of low-voltage, 10KV/50V/500A, 10KV/50V/300A, 10KV/50V/100A and 10KV/2000V,
the converter inverts the alternating current into direct current, wherein each winding of three windings outputting 50V is three-phase, a nine-pulse rectifying device is matched with a seven-core cable, two phases are no-load,
seven of the nine-pulse direct current output device are connected with seven-core wires of a mining seven-core cable, two phases of the nine-pulse direct current output device are unloaded,
the sealed dehumidification moisture absorption drying box is a fully-sealed control cabin body and is used for containing the mining seven-core cable needing dehumidification.
2. The automatic temperature-rise dehumidification moisture absorption device for the mine seven-core cable as claimed in claim 1, wherein the 50V nine-pulse DC output device comprises a 50V/500A three-phase adjustable DC power supply, a 50V/300A three-phase adjustable DC power supply and a 50V/100A single-phase adjustable DC power supply, the 50V/500A three-phase adjustable DC power supply, the 50V/300A three-phase adjustable DC power supply and the 50V/100A single-phase adjustable DC power supply are respectively connected with a three-phase 500A DC contact module, a three-phase 300A DC contact module and a single-phase 100A DC contact module, the 2000V DC output device comprises a 2000V DC power supply, the 2000V DC power supply is connected with a 7-way high-voltage controllable switch module, the three-phase 500A DC contact module, the three-phase 300A DC contact module and the single-phase 100A DC contact module are connected with a lead core of the mine seven-core cable, the 7-path high-voltage controllable switch module is also connected with a lead core of the mining seven-core cable.
3. The mining seven-core cable automatic control temperature rise dehumidification moisture absorption device according to claim 2,
the mining seven-core cable insulation layer is connected with a 7-circuit micro-current transformer, the 7-circuit micro-current transformer is connected with a current acquisition module, and the high-voltage switch, the direct-current contactor control module and the current acquisition module are all connected with a main control computer.
4. The automatic control temperature rise dehumidification moisture absorption device for the mining seven-core cable according to claim 3, wherein a plurality of dehumidification units are arranged on the seven-core cable of the coal mining machine, each dehumidification unit comprises a vacuum pump, a temperature and humidity sensor and a pressure sensor, the vacuum pump, the temperature and humidity sensors and the pressure sensors are all provided with wireless transmission modules, the main control computer is also provided with a wireless transmission module, and the wireless transmission module of the main control computer is in wireless connection with the wireless transmission modules of the vacuum pump, the temperature and humidity sensors and the pressure sensors.
5. The automatic control temperature rise, dehumidification and moisture absorption device for the mine seven-core cable according to claim 3, wherein a plurality of heating devices are arranged in the sealed dehumidification and moisture absorption drying box, a temperature and humidity sensor, a pressure sensor and a vacuum pump are further arranged in the sealed dehumidification and moisture absorption drying box, and the heating devices, the vacuum pump, the temperature and humidity sensor and the pressure sensor of the sealed dehumidification and moisture absorption drying box are all provided with a wireless transmission module and are in wireless connection with a main control computer.
6. The automatic control temperature rise, dehumidification and moisture absorption device for the mining seven-core cable according to claim 5, wherein a cable car is arranged in the sealed dehumidification and moisture absorption drying box, the cable car comprises a cable car frame, a winding shaft and a winding motor are arranged on the cable car frame, the winding shaft is driven by the winding motor to rotate, and the winding shaft is used for winding and placing the seven-core cable of the mining coal machine.
7. The automatic control temperature rise, dehumidification and moisture absorption device for the mining seven-core cable according to claim 6, wherein a cable car rotating wheel is arranged at the bottom of the cable car.
8. The automatic temperature rise, dehumidification and moisture absorption device for the mining seven-core cable as claimed in claim 7, wherein the three-phase 500A direct current contact module, the three-phase 300A direct current contact module and the single-phase 100A direct current contact module are arranged in a sealed dehumidification and moisture absorption drying box, and a clamping ring is arranged at a position where the three-phase 500A direct current contact module, the three-phase 300A direct current contact module and the single-phase 100A direct current contact module are connected with the seven-core cable of the mining coal machine and is clamped on the seven-core cable of the mining coal machine.
9. The automatic control temperature rise, dehumidification and moisture absorption device for the mining hepta-cable according to claim 8, wherein the snap ring comprises a snap ring body and a locking part, the snap ring body is circular, and the locking part comprises a tongue part and a fixing screw which are fixedly connected with the snap ring body.
10. The automatic control temperature rise, dehumidification and moisture absorption device for the mining seven-core cable according to claim 9, wherein the sealed dehumidification and moisture absorption drying box is further divided into a positive pressure cabin and a negative pressure cabin, wherein a vacuum pump and a clamp ring are arranged on one side of the negative pressure cabin, and the cable car, the temperature and humidity sensor, the pressure sensor and the heating device are arranged on one side of the positive pressure cabin.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020802673.XU CN212157874U (en) | 2020-05-14 | 2020-05-14 | Automatic control temperature rise dehumidification moisture absorption device for mining seven-core cable |
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| CN202020802673.XU CN212157874U (en) | 2020-05-14 | 2020-05-14 | Automatic control temperature rise dehumidification moisture absorption device for mining seven-core cable |
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