CN214384862U - Portable discharging device for backup power supply of pitch system of wind generating set - Google Patents
Portable discharging device for backup power supply of pitch system of wind generating set Download PDFInfo
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- CN214384862U CN214384862U CN202120468336.6U CN202120468336U CN214384862U CN 214384862 U CN214384862 U CN 214384862U CN 202120468336 U CN202120468336 U CN 202120468336U CN 214384862 U CN214384862 U CN 214384862U
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Abstract
The utility model discloses a portable discharge device for wind generating set becomes oar system back-up source, this discharge device discharges to the super capacitor who becomes oar axle cabinet, contains box body, the empty division of discharging, pull-back spring terminal row, voltmeter, aluminum hull resistance and ground connection clamp etc.. The box body is provided with a plurality of through holes for heat dissipation; the pull-back spring terminal row is arranged in the box body and used for being connected with corresponding positive and negative electrodes of the total voltage of the super capacitor of the variable propeller shaft cabinet and leading out two connecting wires, one connecting wire is connected with the voltmeter, and the other connecting wire is connected with the aluminum shell resistor through the discharge air switch; the voltmeter is arranged outside the box body and used for measuring and displaying the total voltage value of the super capacitor; the aluminum shell resistor is arranged inside the box body and discharges the super capacitor of the variable pitch shaft cabinet. The discharge device is grounded through a grounding clip. Discharge device convenient to use, and safe high-efficient, good application prospect has.
Description
Technical Field
The utility model belongs to the technical field of discharge device, concretely relates to a portable discharge device that is used for wind generating set to become oar system back-up source.
Background
At present, a backup power supply of most of wind generating sets in China adopts a super capacitor module scheme, the self-contained brake or discharge resistor in most of variable pitch drivers can realize the discharge operation of a super capacitor through the debugging interface control of an upper computer, but the power of the self-contained brake or discharge resistor in the drivers is generally about hundreds of watts, and the discharge of a variable pitch cabinet is still completed within about twenty minutes although the constant current discharge is realized by adopting a PWM (pulse width modulation) control thyristor. The method of using a driver to connect with a discharge resistor externally also exists, but the discharge method can only discharge the total voltage of the capacitor to about 35V generally, and this is mainly because the power module inside the driver stops working when the voltage of the direct current bus is lower than about 35V, which causes the programmable logic controller inside the driver to stop working, and the residual voltage needs to wait for several minutes before the capacitor can completely cut off the power of the driver through self-leakage. The simple discharging device is manufactured by field workers by themselves, discharging is achieved by directly connecting the aluminum shell resistor with the air switch with the capacitor, but the simple discharging device has many unsafe factors, is easy to cause electric injury or scald to the workers, is inconvenient to use, and cannot judge the total voltage value of the capacitor before and after discharging and in the discharging process.
SUMMERY OF THE UTILITY MODEL
In order to improve discharge device's security, convenient to use, the utility model provides a portable discharge device for wind generating set becomes oar system back-up source.
The utility model provides a discharging device for discharging the total voltage of a super capacitor of a variable pitch shaft cabinet, which comprises a box body, a discharging air switch, a pull-back spring terminal row, a voltmeter and an aluminum shell resistor;
the box body is provided with a plurality of through holes for dissipating heat inside the box body;
the pull-back spring terminal row is arranged in the box body and used for being connected with corresponding positive and negative electrodes of the total voltage of the super capacitor of the variable propeller shaft cabinet and leading out two connecting lines, one connecting line is connected with the voltmeter, and the other connecting line is connected with the aluminum shell resistor through a discharge air switch;
the voltmeter is arranged outside the box body and used for measuring and displaying the total voltage value of the super capacitor before and after discharging and in the discharging process in real time;
the aluminum shell resistor is arranged inside the box body and used for discharging the super capacitor of the variable pitch shaft cabinet in a resistor power consumption heating mode.
Preferably, the box body is a square box body and comprises a top plate, a bottom plate arranged opposite to the top plate, a first side plate, a second side plate arranged opposite to the first side plate, a third side plate and a fourth side plate arranged opposite to the third side plate;
the box body is made of stainless steel materials or carbon steel materials.
Preferably, the through holes are formed in the bottom plate, the second side plate, the third side plate and the fourth side plate;
the outer wall of the first side plate is provided with a heat insulation nylon plate.
Preferably, the pull-back spring terminal row is positioned on the inner wall of the top plate, and the voltmeter is positioned on the outer wall of the top plate;
the aluminum shell resistor is positioned on the inner wall of the first side plate, and a heat-insulating rubber pad is arranged between the aluminum shell resistor and the first side plate;
the aluminum shell resistance is kilowatt level.
Preferably, the discharge hole is arranged on the outer wall of the top plate and used for controlling the connection or disconnection of the resistance loop of the aluminum shell.
Preferably, the discharge device further comprises a grounding clip for grounding the discharge device;
one end of the grounding wire is connected with the box body, the other end of the grounding wire is connected with the grounding clamp, and the grounding of the discharging device is realized by arranging the grounding clamp on the grounding variable-pitch shaft cabinet.
Preferably, the box body is provided with a metal grounding column;
the connection with the box body is achieved by connecting one end of the ground wire to a metal ground post.
Preferably, the outer wall of the top plate is provided with an insulating handle for carrying the discharge device.
Preferably, a metal handle is arranged on the third side plate or the fourth side plate and used for hoisting the discharge device to a tower.
Compared with the prior art, the portable discharging device for the backup power supply of the pitch system of the wind generating set provided by the utility model can measure and display the total voltage value of the super capacitor in real time before and after discharging or in the discharging process; the high-power kilowatt-level aluminum shell resistor is adopted, the discharging capacity is strong, the test can be used for completely discharging the back-up power supply of the three full-voltage variable pitch shaft cabinets continuously, the device can be directly taken out of the lower tower of the hub after discharging is finished, the waiting for cooling is not required to be placed, and the operation time of high-risk environment of workers on the tower is shortened. Discharge device is equipped with adiabatic rubber pad and slows down a large amount of direct heat conduction of the heat that aluminum hull resistance will discharge the production and give the metal casing of box body, has still installed thermal-insulated nylon board and has insulated heat, further avoids carrying the device scald staff that discharges and accomplish, still is equipped with earthing device guarantee operation safety, prevents that the device electric leakage from hindering the people. Discharge device convenient to use, and safe high-efficient, good application prospect has.
Drawings
Fig. 1 is a disassembled schematic view of the box body of the present invention;
fig. 2 is a schematic diagram of the circuit connection of the discharging device of the present invention.
Detailed Description
The present invention will be further described by the detailed description of preferred embodiments with reference to the attached drawings.
A variable-pitch shaft cabinet of a variable-pitch system of a wind generating set generally has a backup power supply, and is used for providing electric energy to enable an electric variable-pitch system to control a variable-pitch motor to drive blades to feather to a safe position when a power grid is powered off, so that the safe shutdown of the set is ensured when the power grid is powered off, and the variable-pitch shaft cabinet is well grounded. The utility model provides a discharge device discharges to the reserve power supply super capacitor who becomes oar axle cabinet, contains box body, discharges empty division, pull-back spring terminal row, voltmeter, aluminum hull resistance and ground connection clamp.
The box body is a square box body, is made of stainless steel materials or carbon steel materials with painted surfaces, and comprises a top plate 110, a bottom plate 120 arranged opposite to the top plate, a first side plate, a second side plate 130 arranged opposite to the first side plate, a third side plate 140 and a fourth side plate 150 arranged opposite to the third side plate; the first side plate, the second side plate 130, the third side plate 140 and the fourth side plate 150 are located between the top plate and the bottom plate, wherein the outer wall of the first side plate is provided with a heat insulation nylon plate.
Fig. 1 is a schematic view of the disassembly of the box body of the present invention (the first side plate is not shown). As shown in fig. 1, the bottom plate 120, the second side plate 130, the third side plate 140 and the fourth side plate 150 respectively have a plurality of through holes a for naturally dissipating heat generated during resistance discharge of the aluminum case inside the case body.
The pull-back spring terminal block 200 is disposed inside the box body, specifically, on the inner wall of the top plate 110. The pull-back type spring terminal row 200 is connected to the positive electrode and the negative electrode corresponding to the total voltage of the super capacitor of the pitch axis cabinet through connecting wires L1 and L2, and two connecting wires are led out: one connection line L3 is connected to the voltmeter 300, and the other connection line L4 is connected to the aluminum-casing resistor 400 through the discharge air switch, as shown in fig. 2. Fig. 2 is a schematic diagram of the circuit connection of the discharging device of the present invention. The connection line L4 is provided with a discharge air switch 600, and the connection line L4 is controlled to be disconnected or connected through the discharge air switch 600. The discharge air switch 600 is disposed on an outer wall of the top plate 110, and is manually opened and closed by an operation handle of the discharge air switch.
Referring to fig. 1 and 2, the voltmeter 300 is disposed on the outer wall of the top plate 110, and measures and displays the total voltage value of the super capacitor before and after discharging and during discharging in real time.
The aluminum case resistor 400 is disposed inside the case body, specifically, on the inner wall of the first side plate. The aluminum shell resistor 400 discharges the super capacitor of the pitch axis cabinet in a resistor power consumption heating mode. Be equipped with adiabatic rubber pad between aluminum hull resistance 400 and first curb plate for slow down a large amount of heat-conduction that aluminum hull resistance 400 will discharge the production and give the box body of stainless steel or carbon steel material, the outer wall of first curb plate has installed thermal-insulated nylon board additional, when avoiding discharging and finishing removing the device, scald the staff.
The utility model discloses a be that the aluminum hull resistance of 2 ~ 3kw of great power kilowatt level has the ability of carrying out thorough discharge to the back-up power supply in the oar axle cabinet of changing of three full voltage in succession through the test, gives the oar axle cabinet of changing of three full voltage in succession after discharging, and the temperature of thermal-insulated nylon board rises to about 50 ℃ at most, and the wind field can not take place the condition that three back-up power supply super capacitor of changing oar axle cabinet damaged simultaneously generally, so discharge device can directly take out wheel hub lower tower after having discharged electricity, need not to place the wait-for cooling, reduces the operating time of the high risk environment on the staff's tower.
The grounding clip 500 is used for grounding the discharge device, and preventing the discharge device from being injured by electric leakage in the discharge process. Specifically, the box body is provided with a metal grounding post 900 for connecting a grounding wire L0; one end of a grounding wire L0 is connected with the metal grounding column 900 to realize connection with a box body made of stainless steel or carbon steel, the other end of the grounding wire L0 is connected with the grounding clip 500, and the grounding clip 500 is clipped on the metal edge of the pitch axis cabinet with good grounding, thereby realizing reliable grounding of the discharge device.
An insulating handle 700 is further arranged on the top plate 110 of the discharging device, so that the discharging device is convenient to carry and move by workers. The insulated handle 700 may be made of plastic material to ensure insulation to the body when the device is moved during the discharging process. The third side plate 140 or the fourth side plate 150 of the discharge device is provided with a metal handle 800, so that the discharge device can be conveniently hung on a tower.
While the present invention has been described in detail with reference to the preferred embodiments thereof, it should be understood that the above description should not be taken as limiting the present invention. Numerous modifications and alterations to the present invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (9)
1. The utility model provides a portable discharge device for wind generating set becomes oar system back-up source, discharges the super capacitor total voltage who becomes oar axle cabinet, its characterized in that contains: the box comprises a box body, a discharge air switch, a pull-back spring terminal row, a voltmeter and an aluminum shell resistor;
the box body is provided with a plurality of through holes for dissipating heat inside the box body;
the pull-back spring terminal row is arranged in the box body and used for being connected with corresponding positive and negative electrodes of the total voltage of the super capacitor of the variable propeller shaft cabinet and leading out two connecting lines, one connecting line is connected with the voltmeter, and the other connecting line is connected with the aluminum shell resistor through a discharge air switch;
the voltmeter is arranged outside the box body and used for measuring and displaying the total voltage value of the super capacitor before and after discharging and in the discharging process in real time;
the aluminum shell resistor is arranged inside the box body and used for discharging the super capacitor of the variable pitch shaft cabinet in a resistor power consumption heating mode.
2. The discharge device according to claim 1, wherein the case body is a square case body including a top plate, a bottom plate disposed opposite to the top plate, a first side plate, a second side plate disposed opposite to the first side plate, and a third side plate, a fourth side plate disposed opposite to the third side plate;
the box body is made of stainless steel materials or carbon steel materials.
3. The discharge device according to claim 2, wherein the through hole is opened in the bottom plate, the second side plate, the third side plate and the fourth side plate;
the outer wall of the first side plate is provided with a heat insulation nylon plate.
4. The discharge apparatus of claim 2, wherein said pull-back spring terminal row is located on an inner wall of the top plate and said voltmeter is located on an outer wall of the top plate;
the aluminum shell resistor is positioned on the inner wall of the first side plate, and a heat-insulating rubber pad is arranged between the aluminum shell resistor and the first side plate;
the aluminum shell resistance is kilowatt level.
5. The discharge device as claimed in claim 2, wherein the discharge hole is disposed on an outer wall of the top plate for controlling the connection or disconnection of the resistance circuit of the aluminum case.
6. The discharge device of claim 1, further comprising a grounding clip for grounding said discharge device;
one end of the grounding wire is connected with the box body, the other end of the grounding wire is connected with the grounding clamp, and the grounding of the discharging device is realized by arranging the grounding clamp on the grounding variable-pitch shaft cabinet.
7. The discharge apparatus as recited in claim 6, wherein the case body is provided with a metal grounding post; the connection with the box body is achieved by connecting one end of the ground wire to a metal ground post.
8. The discharge device of claim 2,
and an insulating handle is arranged on the outer wall of the top plate and used for carrying the discharge device.
9. The discharge device of claim 2,
and a metal handle is arranged on the third side plate or the fourth side plate and used for hoisting the discharge device to the tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120468336.6U CN214384862U (en) | 2021-03-04 | 2021-03-04 | Portable discharging device for backup power supply of pitch system of wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120468336.6U CN214384862U (en) | 2021-03-04 | 2021-03-04 | Portable discharging device for backup power supply of pitch system of wind generating set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214384862U true CN214384862U (en) | 2021-10-12 |
Family
ID=77992379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120468336.6U Active CN214384862U (en) | 2021-03-04 | 2021-03-04 | Portable discharging device for backup power supply of pitch system of wind generating set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214384862U (en) |
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2021
- 2021-03-04 CN CN202120468336.6U patent/CN214384862U/en active Active
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