Electric arc prevention barrier gate based on power system automation equipment

Abstract

The utility model provides an electric arc prevention barrier gate based on electric power system automation equipment, and relates to the field of automation equipment. The electric arc prevention barrier gate based on the electric power system automation equipment comprises a shell, a gate rod and a motor, the motor is used for controlling the gate rod to rotate, a control mechanism used for controlling on-off of a power source of the motor is installed in the shell, the control mechanism comprises two connecting arms and two contacts, and the connecting arms rotate with rotating shafts in the connecting arms as axes; according to the electric-arc-preventing barrier gate based on the electric power system automation equipment, two contacts simultaneously and reversely move to be rapidly separated, compared with movement of a single contact, the separation distance of the contacts is increased, the separation time is shortened, an electric arc can be rapidly lengthened, meanwhile, air spraying heads distributed in an up-down staggered mode are arranged and matched with an air pump to blow air in time, and the working efficiency is improved. The cooling, stretching and blowing effects of the high-speed airflow are utilized to efficiently extinguish the arc, reduce the damage of the arc to equipment, and guarantee the safe and stable operation of a barrier gate electrical system.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automation equipment, concretely is a kind of anti-arc barrier based on electric power system automation equipment. BACKGROUND

[0002] Automation equipment refers to the mechanical equipment that can complete specific task or a series of operations according to preset program, instruction or law automatically without human direct intervention, and the electric power system automation equipment usually has automatic control function, the barrier of automation equipment is driven by these technologies, and the opening and closing of the barrier are automatically controlled according to the running state of the electric power system or specific instruction through preset program and logic; The barrier needs to be driven by motor to realize the lifting and falling of the barrier lever to control the passing of vehicles or pedestrians. The on-off of the control power source can accurately control the start, stop and forward and reverse rotation of the motor, so that the barrier lever operates according to the set program, meets the passing management requirements in different scenes, for example, when the vehicle enters the parking lot, the power is connected by card swiping or other triggering methods to drive the motor to lift the barrier lever, and after the vehicle passes the barrier, the vehicle detector (such as ground inductor, infrared sensor, etc.) installed near the barrier will detect the signal that the vehicle leaves and transmit the signal to the control system of the barrier. After receiving the signal, the control system will issue an instruction to cut off the power supply of the motor, and trigger the control signal of the barrier lever to drop, and after the power supply is cut off, the barrier motor loses power and stops rotating, at this time, the brake in the motor will quickly brake to prevent the motor from continuing to rotate due to inertia, and ensure that the barrier lever can stop accurately at the set position.

[0003] The on-off of the power supply of the barrier motor is generally controlled by contactor and relay, and at the moment of contact closing and opening, due to the change of current and the electric field effect between contacts, arc is easy to be generated, especially in the case of large current on-off, for example, when the barrier is frequently opened and closed, the contactor contacts frequently act, and the probability of generating arc increases, which is easy to cause damage to the contacts and equipment. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides an anti-arc barrier based on electric power system automation equipment, which solves the problem that the arc generated when the barrier is frequently opened and closed is easy to cause damage to the equipment.

[0005] To achieve the above purpose, the utility model is realized by the following technical scheme: an anti-arc barrier based on electric power system automation equipment, comprising a shell, a barrier lever and a motor, the motor is used for controlling the rotation of the barrier lever, a control mechanism for controlling the on-off of the power supply of the motor is installed in the inside of the shell, the control mechanism comprises two connecting arms and two contacts, the connecting arms rotate around their respective internal rotation axes, and the two contacts are fixed to the end portions of the two connecting arms.

[0006] When the two contacts are in contact, a current-carrying loop is formed between the motor, the two connecting arms and the two contacts, and when the driving device drives the two connecting arms to rotate reversely and separates the two contacts, the current-carrying loop is disconnected.

[0007] The two connecting arms are each provided with a jet head fixed relative to the connecting arm, and the two jet heads are distributed in an up-and-down staggered manner and used for arc extinguishing by air blowing.

[0008] Preferably, the control mechanism further comprises two fixed seats, the two fixed seats are fixedly installed in the shell, and the rotating shafts in the connecting arms are respectively rotatably connected with the two fixed seats.

[0009] Preferably, the driving device comprises two inclined plates, a connecting plate, a sliding block and an electric push rod, the electric push rod is fixedly installed in the shell, the output end of the electric push rod is fixed with the sliding block, one end of each of the two inclined plates is fixedly connected with the rotating shaft, the other end of each of the two inclined plates is rotatably connected with two ends of the connecting plate, and the sliding block is slidably connected with a notch in the connecting plate.

[0010] Preferably, a gas pump is fixedly installed on each of the two fixed seats, and the blowing end of the gas pump is connected with the jet head close to the gas pump through a hose.

[0011] Preferably, the outer side of the shell is communicated with two heat dissipation boxes, and a dust screen is installed on the end of each of the two heat dissipation boxes away from each other.

[0012] Preferably, the positions of the two heat dissipation boxes are respectively arranged corresponding to the rotating directions of the two connecting arms, so that one end of the connecting arm can rotate into the heat dissipation box.

[0013] Preferably, the outer layer of the connecting arm is an insulator, and a fixed block is fixedly connected to the outer side of the connecting arm, and the jet head is fixedly installed on the fixed block.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the two contacts are quickly separated by moving reversely at the same time, the separation distance of the contacts is increased compared with the single contact movement, the separation time is shortened, the electric arc can be quickly lengthened, meanwhile, the jet heads distributed in an up-and-down staggered manner are arranged, the gas pump is arranged to blow air in time, the high-speed airflow is used for cooling, lengthening and dispersing, the electric arc is extinguished efficiently, the damage of the electric arc to the equipment is reduced, and the safe and stable operation of the barrier electrical system is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of the utility model;

[0016] Figure 2 It is a sectional view of the front view of the shell and the heat dissipation box of the utility model;

[0017] Figure 3It is structural schematic view of control mechanism and driving device of the utility model.

[0018] Figure 4 It is schematic view of two contactor disconnecting process of the utility model.

[0019] Figure 5 It is sectional view of connecting arm of the utility model.

[0020] Figure 6 It is structural schematic view of fixed seat of the utility model.

[0021] Figure 7 It is structural schematic view of connecting arm of the utility model.

[0022] Among them: 1, the shell; 2, gate lever; 3, motor; 4, control mechanism; 400, connecting arm; 401, rotating shaft; 402, contactor; 403, fixed seat; 5, driving device; 501, inclined plate; 502, connecting plate; 503, sliding block; 504, electric push rod; 505, notched; 6, jet head; 7, air pump; 8, hose; 9, heat sink; 10, dust screen. DETAILED DESCRIPTION

[0023] As Figures 1-7 shown, a kind of anti electric arc barrier gate based on power system automation equipment, including shell 1, gate lever 2 and motor 3, motor 3 is used to control gate lever 2 rotation, gate lever 2 rotation is installed on barrier controller shell 1, motor 3 is fixed in shell 1, its output end is connected with the shaft at gate lever 2, the inside of shell 1 is installed with the control mechanism 4 for controlling the power on-off of motor 3, control mechanism 4 includes two connecting arms 400 and two contactors 402, connecting arm 400 rotates with the rotating shaft 401 in each inside as pivot respectively, two contactors 402 are fixed to the end of two connecting arms 400 respectively, the control mechanism 4 further includes two fixed seats 403, two fixed seats 403 are fixedly installed in shell 1, rotating shaft 401 in connecting arm 400 is connected with two fixed seats 403 rotation respectively, fixed seat 403 is used to improve the stability of connecting arm 400 and rotating shaft 401 in it.

[0024] When the two contacts 402 are in contact, an electric circuit is formed between the motor 3, the two connecting arms 400 and the two contacts 402, the motor 3 is powered and drives the gate lever 2 to rotate, when the driving device 5 drives the two connecting arms 400 to rotate in the opposite direction and separates the two contacts 402, the electric circuit is disconnected, and the motor 3 is powered off, the driving device 5 includes two inclined plates 501, a connecting plate 502, a sliding block 503 and an electric push rod 504, the electric push rod 504 is fixedly installed in the housing 1, the output end of the electric push rod 504 is fixedly connected with the sliding block 503, one end of the two inclined plates 501 is fixedly connected with the two rotating shafts 401 respectively, the other end of the two inclined plates 501 is rotatably connected with the two ends of the connecting plate 502 respectively, the sliding block 503 is slidably connected with the notch 505 in the connecting plate 502, the electric push rod 504 can control the sliding block 503 to move back and forth, the sliding block 503, the connecting plate 502 and the two inclined plates 501 can be linked to control the rotating shaft 401 in the connecting arm 400 to rotate, the air pump 7 is fixedly installed on the two fixing bases 403, and the blowing end of the air pump 7 is connected with the air jet head 6 close to the air pump 7 through the hose 8.

[0025] The two connecting arms 400 are provided with the air jet heads 6 fixed thereon, the two air jet heads 6 are arranged in an up-down staggered manner and used for arc extinguishing, the outer layer of the connecting arm 400 is an insulator, and the outer side of the connecting arm 400 is fixedly connected with a fixing block, the air jet head 6 is fixedly installed on the fixing block, the outer side of the housing 1 is communicated with two heat dissipation boxes 9, the dustproof net 10 is installed on the end of the two heat dissipation boxes 9 away from each other, and the positions of the two heat dissipation boxes 9 correspond to the rotating directions of the two connecting arms 400 respectively, so that one end of the connecting arm 400 can rotate into the heat dissipation box 9.

[0026] Working principle:

[0027] Firstly, when the two contacts 402 are in contact, an electric circuit is formed between the motor 3, the two connecting arms 400 and the two contacts 402, the motor 3 obtains electric energy to start operation, since the output end of the motor 3 is connected with the shaft at the gate lever 2, the rotation of the motor 3 drives the gate lever 2 to rotate, realizing the opening or closing operation of the barrier gate, the gate lever 2 rotates around the shaft in the gate lever 2, so that the other end of the gate lever 2 rises, and the rising allows the vehicle or pedestrian to pass, the motor 3 can also drive the gate lever 2 to rotate in the opposite direction, so that the gate lever 2 falls, and the vehicle or pedestrian is not allowed to pass at this time.

[0028] Then, since the gate lever 2 needs to cut off the power supply of the motor 3 when it stops rotating, the driving device 5 drives the two connecting arms 400 to rotate in the opposite direction, so that the two contacts 402 are separated, the electric circuit is disconnected, and the motor 3 is powered off. Figures 2-4As shown, when it is necessary to cut off the power supply of the motor 3, the electric push rod 504 is started to drive the sliding block 503 to move, the sliding block 503 drives the connecting plate 502 to move, the connecting plate 502 drives the two inclined plates 501 to rotate respectively around the two rotating shafts 401 as the shafts, the two inclined plates 501 respectively drive the two rotating shafts 401 to rotate, and the two rotating shafts 401 respectively drive the two connecting arms 400 to rotate. When the driving device 5 drives the two connecting arms 400 to rotate reversely, the two connecting arms 400 respectively drive the two contacts 402 to separate, the power supply circuit is disconnected, the motor 3 loses the power supply and stops rotating, and the gate lever 2 also stops at the corresponding position. Since the two contacts 402 are simultaneously reversely moved, the traditional way is to move a single contact 402 to cut off the circuit connection, and the two contacts 402 of the device are reversely moved simultaneously. Compared with the single contact 402 movement, the distance between the two contacts 402 is increased in the same time, for example, assuming that a single contact 402 moves a distance in a certain time, then the distance between the two contacts 402 reversely moved simultaneously in the same time is twice the distance of the single contact 402. In the case of the same distance, because the two contacts 402 are reversely moved simultaneously, the time for completing the separation of the contacts 402 is reduced by half compared with the single contact 402 movement, for example, the single contact 402 originally needs 0.5 seconds from contact to complete separation, and when the two contacts 402 reversely moved simultaneously are used, the time is shortened to 0.25 seconds, so as to realize the rapid separation of the two contacts 402 and can quickly lengthen the electric arc. According to the characteristics of the electric arc, the electric resistance of the electric arc is increased and the heat dissipation is increased after the electric arc is lengthened, so that the electric arc is difficult to maintain, thereby being extinguished faster. Therefore, by the way of quickly lengthening the electric arc, the anti-arc effect of the barrier gate is effectively improved, the risk of damage to the equipment caused by the electric arc is reduced, and the safety of the barrier gate is improved.

[0029] Then, in the process of disconnecting the two contacts 402, the air pump 7 is started to deliver gas along the hose 8 to the air jet head 6, and the two air pumps 7 respectively control the air jet of the two air jet heads 6, such as Figure 4As shown, two air jets 6 blow gas to the arc region between the two contacts 402 during movement, since the arc is a high-temperature plasma, the temperature can reach several thousand degrees Celsius, the airflow can quickly take away a large amount of heat generated by the arc, so that the arc temperature drops sharply, when the temperature drops below the threshold required to maintain the arc plasma state, the charged particles in the arc are more complex, the plasma gradually changes into ordinary gas, thereby extinguishing the arc, the impact force of the airflow also makes the arc be lengthened and scattered, after the arc is lengthened, its resistance increases, and the heat dissipation area increases, further aggravating heat dissipation, at the same time, the arc is scattered into multiple small plasma regions, which are difficult to maintain a stable arc state, thereby accelerating the arc extinguishing process; it should be noted that since the two air pumps 7 independently control the air blowing of the two air jets 6, the arc extinguishing operation can be more accurate according to the actual situation of the arc generated when the two contacts 402 separate, even if the arc generated by the two contacts 402 has differences in intensity and position, the air pump 7 and the air jet 6 can be independently controlled to cool, lengthen and scatter the arc, so as to ensure that the arc can be reliably extinguished under various working conditions and ensure the safe operation of the barrier gate.

[0030] Finally, the outer side of the shell 1 is communicated with two heat dissipation boxes 9, and the ends of the two heat dissipation boxes 9 away from each other are both provided with a dust screen 10, the arrangement of the heat dissipation box 9 can effectively reduce the heat generated during the operation of the barrier gate, prevent the equipment from being damaged due to overheating, prolong the service life of the equipment, and the installation of the dust screen 10 can prevent external dust and other impurities from entering the inside of the heat dissipation box 9, affecting the heat dissipation effect; it should be noted that, as shown in the figure, Figure 5 As shown, the connecting arm 400 is part of the power circuit in the control mechanism 4, when the contacts 402 are in contact, the current will pass through the connecting arm 400, if the outer layer of the connecting arm 400 is not insulated, the metal part may be subject to electric leakage, which has a safety hazard, and the insulating outer layer can isolate the connecting arm 400 from the surrounding conductive components to prevent short circuit and ensure the normal operation of the barrier gate.

[0031] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An anti-arc contactor based on power system automation equipment, comprising a housing (1), a contactor lever (2) and a motor (3) for controlling the rotation of the contactor lever (2), characterized in that: The inside of the shell (1) is provided with a control mechanism (4) for controlling the power on-off of the motor (3), the control mechanism (4) comprising two connecting arms (400) and two contacts (402), the connecting arms (400) rotating around their respective internal rotating shafts (401), and the two contacts (402) being fixed to the ends of the two connecting arms (400); When the two contacts (402) are in contact, an electric circuit is formed among the motor (3), the two connecting arms (400) and the two contacts (402), and when the driving device (5) drives the two connecting arms (400) to rotate reversely and separates the two contacts (402), the electric circuit is disconnected; The two connecting arms (400) are each provided with a jet head (6) fixed thereto, and the two jet heads (6) are arranged in an up-and-down staggered manner.

2. The anti-arcing gate based on power system automation equipment according to claim 1, characterized in that: The control mechanism (4) further comprises two fixed seats (403), which are fixedly installed in the shell (1), and the rotating shafts (401) in the connecting arms (400) are rotatably connected with the two fixed seats (403).

3. The anti-arcing gate based on power system automation equipment of claim 1, wherein: The driving device (5) comprises two inclined plates (501), a connecting plate (502), a sliding block (503) and an electric push rod (504), the electric push rod (504) being fixedly installed in the shell (1), the output end of the electric push rod (504) being fixed with the sliding block (503), one end of each of the two inclined plates (501) being fixedly connected with the two rotating shafts (401), the other end of each of the two inclined plates (501) being rotatably connected with the two ends of the connecting plate (502), and the sliding block (503) being slidably connected with a notch (505) in the connecting plate (502).

4. The anti-arcing gate based on power system automation equipment of claim 2, wherein: The two fixed seats (403) are each fixedly provided with an air pump (7), and the blowing end of the air pump (7) is connected with the jet head (6) adjacent thereto through a hose (8).

5. The anti-arcing gate based on power system automation equipment of claim 1, wherein: The outside of the shell (1) is connected with two heat dissipation boxes (9), and the ends of the two heat dissipation boxes (9) away from each other are each provided with a dust screen (10).

6. An anti-arcing gate based on power system automation equipment according to claim 5, characterized in that: The positions of the two heat dissipation boxes (9) correspond to the rotating directions of the two connecting arms (400), so that one end of the connecting arm (400) can rotate into the heat dissipation box (9).

7. The anti-arcing gate based on power system automation equipment of claim 1, wherein: The outer layer of the connecting arm (400) is an insulator, and the outer side of the connecting arm (400) is fixedly connected with a fixed block, and the jet head (6) is fixedly installed on the fixed block.

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