CN201160215Y

CN201160215Y - Generator control box

Info

Publication number: CN201160215Y
Application number: CNU2007200975420U
Authority: CN
Inventors: 崔利民
Original assignee: Tianjin General Facility Service Science & Technology Co Ltd
Current assignee: Tianjin General Facility Service Science & Technology Co Ltd
Priority date: 2007-11-07
Filing date: 2007-11-07
Publication date: 2008-12-03
Anticipated expiration: 2017-11-07

Abstract

The utility model discloses a generator control box, which comprises a main control circuit with a generator control board K for controlling the generator and a second control circuit connected with the main control circuit and used for the monitoring and alarming for the running of the generator. The main control circuit comprises the generator control board K respectively connected with a three-phase power supply through a circuit breaker QS1 with the function of leakage protection, and a contactor KM1. The generator control box has the advantages that the structure is simple; the volume is small; the wiring is simple and legible; the voltage can be adjusted automatically; a frequency protection circuit, the voltage of which can be reduced along with the reduction of the revolution of the engine, is arranged in the generator control box; the performance of the excitation and voltage adjustment system can be improved; the reliability of the system can be enhanced; the failure rate of the excitation and voltage adjustment system can be reduced, and the operation is simple; the functions of digital frequency display, overfrequency and underfrequency protection, automatic resetting, voltage digital and protection, linked load control and overheating protection of generator coil are provided; the cost of the generator control box is low; the performance is good; the service life is long; the electric power can be saved, and the operation is safe.

Description

The generator control cabinet

Technical field

The utility model relates to a kind of tank car conveying arrangement, and particularly a kind of cost is low, the performance height, and long service life is saved electric power, the generator control cabinet of handling safety.

Background technology

The tank car transportation is all very general at home and abroad, oxygen, cryogenic liquids such as nitrogen all lean on the tank car transportation, the China that enters along with large scale industry gas overseas-funded enterprise, continuous increase with domestic big-and-middle-sized industrial gasses enterprise, occurred increasing trans-city, transprovincial operation, often a plurality of centers of supplying gas are had in an enterprise in the whole nation, the center of supplying gas is delivered to each end user by tank car with the cryogenic gas product, unload by mobile generator and power supply disks to on-the-spot, control system the earliest all is to use external imported product, because its system design is built up early, lack necessary update, and all devices can only import, and device damages easily, and maintenance cycle is oversize, cost is very high, can't satisfy the control requirement of China's new equipment.

Existing vehicle power control system is not to be vehicle-mounted specialized designs, automobile transport for a long time and the process of jolting in be easy to break down.On function, has only direct start-up control function; lack very protection design to property; if the long pump that causes of operating personnel's time departure dallies when unloading; will cause the damage of cryopump; and the spare part of existing Cryo Equipment is very expensive, takes the more control technology to come protection equipment and personal safety to become very urgent demand.

Existing generator control system, because its initial design is used for the fixed installation place, component size is bigger, it is many to occupy the space; lack dustproof design, control panel hangs on the tank car bottom, is run into through regular meeting, and is very dangerous; element is import all, and maintenance cycle is oversize, and cost is very high.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of cost low, performance height, long service life, saving electric power, the generator control cabinet of handling safety.

The technical scheme that the utility model adopted is: a kind of generator control cabinet, include: have the main control loop of the generator control panel K that generator is controlled, with second control loop that links to each other with main control loop, the operation of generator is monitored and reported to the police.

Described main control loop includes: respectively by being with earth leakage protective circuit breaker Q S1 and three phase mains generator coupled control board K and contactor KM1, wherein, the contact J1 of described generator control panel K is connected respectively on the excitation stator of generator with K1; The other end of described contactor connects vehicle-mounted cryopump control cabinet provides power supply to it; Described main control loop also will offer second control loop by the 220V power supply with earth leakage protective circuit breaker Q S1.

Described second control loop includes: the power supply indicator H1 and the generator protection device K1 that are connected both ends of power, the input contact YI of described generator protection device K1, Y2 is connected by reset switch SB2, input contact 22,13 are connected with the input of power supply, input contact 22 is a pair of normally-closed contact with output contact 21, input contact 13 is a pair of normally opened contact with output contact 14, the output contact T1 of generator protection device K1, T2 links to each other with the signal output part of temperature sensor on being arranged on generator by binding post, A1, A2 is a coil, connect 24V and 0V power supply respectively, output contact 21 connects generator-temperature detection alarm display lamp H3, and output contact 14 is by the normally opened contact of cryopump enabling signal KA1 and the series connection 0V power supply of contactor KM1 coil; Also be provided with frequency protection device K2, the contact 1 of described frequency protection device K2 connects power input, and contact 1 also with the output contact 3 of frequency protection device K2,4 formations are often opened, normally closed point, output contact 3 wherein connects by start button SB1 and generator control cabinet and moves the end that the normally opened contact of relay K A2 is in parallel, and start button SB1 is connected the coil of generator control cabinet operation relay K A2 and the end that generator control cabinet operation display lamp H2 is in parallel with the other end that the normally opened contact of generator control cabinet operation relay K A2 is in parallel, another termination 0V power supply that the coil of generator control cabinet operation relay K A2 and generator control cabinet operation display lamp H2 are in parallel, output contact 4 wherein by frequency too high/cross low alarm lamp H4 to connect the 0V power supply, the contact 2 of frequency protection device K2,7 connect the output of main control loop 220V power supply; One end of the normally opened contact of described generator control cabinet operation relay K A2 also links to each other with the cryopump enabling signal by binding post, and the other end of the normally opened contact of KA2 connects the 0V power supply by the coil of cryopump enabling signal KA1.

Generator control cabinet of the present utility model; volume simple in structure is little; wiring is simple and clear; voltage-regulation is automatically to regulate, and the frequency protection circuit that voltage descended thereupon when the built-in motor revolution descended can 50Hz and 60Hz operation; can improve the performance of excitation voltage-regulating system; the reliability of raising system, the failure rate of reduction excitation voltage-regulating system, simple to operate.There is the frequency numeral to show, crosses high-frequency and cross the low frequency protection, automatically reset the chain control of voltage demonstration and protection and load, functions such as generator coil overtemperature protection.This practical cost is low, the performance height, and long service life is saved electric power, handling safety

Description of drawings

Fig. 1 is the circuit theory diagrams of the utility model main control loop;

Fig. 2 is the circuit theory diagrams of the utility model second control loop.

Embodiment

Provide specific embodiment below in conjunction with accompanying drawing, further specify generator control cabinet of the present utility model.

The system disk of generator control cabinet of the present utility model is that size is the stainless steel casing of 500 * 500 * 215mm, and degree of protection reaches IP65, built-in generator control board, earth leakage protective, frequency display list, frequency limits protection controller.Control cable adopts 1.5MM, and power line adopts 16MM.Installing device adopts the fixing assurance of screw reliable and stable.

As shown in Figure 1 and Figure 2, generator control cabinet of the present utility model, include: have the main control loop of the generator control panel K that generator is controlled, with second control loop that links to each other with main control loop, the operation of generator is monitored and reported to the police.

As shown in Figure 1, described main control loop includes: respectively by being with earth leakage protective circuit breaker Q S1 and three phase mains generator coupled control board K and contactor KM1, wherein, the contact J1 of described generator control panel K is connected respectively on the excitation stator of generator with K1, carries out excitatory adjusting; The other end of described contactor connects vehicle-mounted cryopump control cabinet provides power supply to it; Described main control loop also will offer second control loop by the 220V power supply with earth leakage protective circuit breaker Q S1.The model that generator control panel K is adopted in the present embodiment is: GFS460.

As shown in Figure 2, described second control loop includes: be connected the power supply indicator H1 and the generator protection device K1 of both ends of power, power supply adopts the 24V DC power supply on the car.Input contact YI, the Y2 of described generator protection device K1 are connected by reset switch SB2, when generator-temperature detection is too high, warning are arranged, and then pressing reset button SB2 can reset.Input contact 22,13 is connected with the input of power supply, input contact 22 is a pair of normally-closed contact with output contact 21, input contact 13 is a pair of normally opened contact with output contact 14, output contact T1, the T2 of generator protection device K1 links to each other with the signal output part of temperature sensor on being arranged on generator by binding post, A1, A2 are coil, connect 24V and 0V power supply respectively, output contact 21 connects generator-temperature detection alarm display lamp H3, and output contact 14 is by the normally opened contact of cryopump enabling signal KA1 and the series connection 0V power supply of contactor KM1 coil; When generator-temperature detection was too high, temperature alarming display lamp H3 indicator light was bright, 13,14 disconnections of generator protection device K1, and contactor KM1 coil must not be electric, and then contactor KM1 disconnects, and non-transformer is sent to the cryopump control cabinet.Also be provided with frequency protection device K2; the contact 1 of described frequency protection device K2 connects power input; and contact 1 also with the output contact 3 of frequency protection device K2; 4 formations are often opened; normally closed point; output contact 3 wherein connects by start button SB1 and generator control cabinet and moves the end that the normally opened contact of relay K A2 is in parallel; and start button SB1 is connected the coil of generator control cabinet operation relay K A2 and the end that generator control cabinet operation display lamp H2 is in parallel with the other end that the normally opened contact of generator control cabinet operation relay K A2 is in parallel; another termination 0V power supply that the coil of generator control cabinet operation relay K A2 and generator control cabinet operation display lamp H2 are in parallel; press start button SB1; generator control cabinet operation relay K A2 coil is charged; then generator control cabinet operation relay K A2 often leaves the auxiliary contact closure; generator starts, and run indicator H2 is bright.Output contact 4 wherein by frequency too high/cross low alarm lamp H4 to connect the 0V power supply, when frequency was too high or too low, 1,3 contacts of frequency protection device K2 disconnected, 1,4 closings of contact, too high alarm lamp H4 is bright for frequency.The

contact

2,7 of frequency protection device K2 connects the output of main control loop 220V power supply; One end of the normally opened contact of described generator control cabinet operation relay K A2 also links to each other with the cryopump enabling signal by binding post, and the other end of the normally opened contact of KA2 connects the 0V power supply by the coil of cryopump enabling signal KA1.

Generator protection device K1 adopts the protector that Schneider company produces in the present embodiment; The protector that frequency protection device K2 adopts the company that pacifies the good to produce.

The utility model generator start-up operation: switch (can keep "on" position) in the control cabinet that closes.Ato unit changes for output 1200.DC24V mains switch (in the tank car driver's cabin) closes.The observed frequency table shows, requires to be adjusted between the 48Hz-52Hz, preferably 50HZ.Excess temperature indicator light and frequency indicator light all do not work, normally starter-generator.Press start button, relay K A2 closure.With cryopump control cubicle (being not included within the utility model) have chain, need cryopump to press start button after, relay K A1 and contactor KM1 closure have electric power output.

The operation of the utility model thermal overload relay: thermal overload relay has automatic and manual dual mode, under automated manner, can under manual mode, after the thermal overload action, need hand-reset regardless of it, just can restart.When frequency is lower than frequency setting value, set point is 48HZ, and low/high frequency indicator light is bright, and this moment, generator can not start.When frequency is higher than frequency setting value, set point is 52HZ, and low/high frequency indicator light is bright, and this moment, generator can not start.If generator can't normal power generation (not having frequency to show and voltage) with 1 and 2 wiring J1 on the terminal, K1 exchanges.If the bright reset button SB2 that can press of excess temperature indicator light resets.

Claims

1. a generator control cabinet is characterized in that, includes: have the main control loop of the generator control panel K that generator is controlled, with second control loop that links to each other with main control loop, the operation of generator is monitored and reported to the police.

2. generator control cabinet according to claim 1, it is characterized in that, described main control loop includes: respectively by being with earth leakage protective circuit breaker Q S1 and three phase mains generator coupled control board K and contactor KM1, wherein, the contact J1 of described generator control panel K is connected respectively on the excitation stator of generator with K1; The other end of described contactor connects vehicle-mounted cryopump control cabinet provides power supply to it; Described main control loop also will offer second control loop by the 220V power supply with earth leakage protective circuit breaker Q S1.

3. generator control cabinet according to claim 1, it is characterized in that, described second control loop includes: the power supply indicator H1 and the generator protection device K1 that are connected both ends of power, the input contact YI of described generator protection device K1, Y2 is connected by reset switch SB2, input contact 22,13 are connected with the input of power supply, input contact 22 is a pair of normally-closed contact with output contact 21, input contact 13 is a pair of normally opened contact with output contact 14, the output contact T1 of generator protection device K1, T2 links to each other with the signal output part of temperature sensor on being arranged on generator by binding post, A1, A2 is a coil, connect 24V and 0V power supply respectively, output contact 21 connects generator-temperature detection alarm display lamp H3, and output contact 14 is by the normally opened contact of cryopump enabling signal KA1 and the series connection 0V power supply of contactor KM1 coil; Also be provided with frequency protection device K2, the contact 1 of described frequency protection device K2 connects power input, and contact 1 also with the output contact 3 of frequency protection device K2,4 formations are often opened, normally closed point, output contact 3 wherein connects by start button SB1 and generator control cabinet and moves the end that the normally opened contact of relay K A2 is in parallel, and start button SB1 is connected the coil of generator control cabinet operation relay K A2 and the end that generator control cabinet operation display lamp H2 is in parallel with the other end that the normally opened contact of generator control cabinet operation relay K A2 is in parallel, another termination 0V power supply that the coil of generator control cabinet operation relay K A2 and generator control cabinet operation display lamp H2 are in parallel, output contact 4 wherein by frequency too high/cross low alarm lamp H4 to connect the 0V power supply, the contact 2 of frequency protection device K2,7 connect the output of main control loop 220V power supply; One end of the normally opened contact of described generator control cabinet operation relay K A2 also links to each other with the cryopump enabling signal by binding post, and the other end of the normally opened contact of KA2 connects the 0V power supply by the coil of cryopump enabling signal KA1.