Current playback impedance type power distribution cabinet

Abstract

A playback current impedance type power distribution cabinet disclosed by the present application comprises a power distribution cabinet body, a change-over switch used for controlling an oil extraction machine switch and a circuit distributor used for distributing current are installed in the power distribution cabinet body, the circuit distributor is connected with the change-over switch, and the circuit distributor is connected with a plurality of heating resistors through connecting wires. The heating resistor is located on the outer side of the power distribution cabinet body, and a heat dissipation structure is arranged outside the heating resistor. Through the arrangement of the power distribution cabinet of the oil extraction machine, playback current is released in a heat loss mode, the safety of components in a circuit can be well guaranteed, the device can be suitable for occasions not suitable for grounding treatment, the safety around the power distribution cabinet can be guaranteed, the service life of electrical components in the circuit can be further guaranteed, and the service life of the power distribution cabinet is prolonged. The heat dissipation device is located outside the power distribution cabinet, heat dissipation of the power distribution cabinet is not affected, the number of heating resistors is large, the heat dissipation efficiency is high, and the overall service life of the power distribution cabinet can be effectively prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution cabinets, and in particular to a playback current impedance type power distribution cabinet. Background Art

[0002] At present, each oil production machine is equipped with an independent distribution cabinet to control the various electrical components on the single oil production machine. Therefore, various forms of distribution cabinets have emerged according to different needs. Compared with the early products with single functions and mainly used for basic power distribution, the current distribution cabinets have also integrated the Internet of Things and big data technologies, and are gradually developing towards intelligent monitoring and remote control.

[0003] In the process of the distribution cabinet controlling the start-up of the oil drilling machine, the oil drilling machine relies on a high-power motor drive, and the distribution cabinet needs to stably cope with the start-stop impact and harmonic interference, especially in the case of abnormal power outages. The oil drilling machine is still running due to inertia. In this process, a large backflow phenomenon will occur, which will cause a certain impact on the inverter or other components and affect the service life of the distribution cabinet. Due to the special environment of the distribution cabinet, excessive grounding current may cause fire or casualties. Therefore, when designing the distribution cabinet, it is necessary to limit the impact of the backflow current on the power system, improve the power quality, and protect the safe operation of the equipment. For this reason, we proposed a backflow current impedance type distribution cabinet to solve the above problems. Summary of the invention

[0004] The present application provides a playback current impedance type power distribution cabinet, which solves the problem that a traditional power distribution cabinet needs to be grounded for playback current after power failure, and excessive grounding current may cause fire or casualties.

[0005] The present application provides a playback current impedance type distribution cabinet, including a distribution cabinet body, in which a conversion switch for controlling an oil production machine switch and a circuit distributor for distributing current are installed, the circuit distributor is connected to the conversion switch, and the circuit distributor is connected to a plurality of heating resistors via connecting wires, the heating resistors are located outside the distribution cabinet body, and a heat dissipation structure is arranged outside the heating resistors.

[0006] Preferably, a regulating switch is installed on the circuit distributor, and the regulating switch is connected in series with the heating resistor.

[0007] Preferably, the regulating switch is an insulating groove arranged on the circuit distributor, a connecting pole is arranged in the insulating groove, a plurality of adjusting screw buckles corresponding to the connecting wires are installed on the circuit distributor, and the adjusting screw buckles are threadedly rotated on the circuit distributor.

[0008] Preferably, a heat dissipation pipe is arranged outside the heating resistor, and heat transfer oil is arranged inside the heat dissipation pipe.

[0009] Preferably, a supporting compartment is installed on the top of the power distribution cabinet, the heat dissipation pipe is fixed on the supporting compartment, and the connecting wire passes through the supporting compartment.

[0010] Preferably, the heat dissipation tube sleeve is provided with a plurality of heat sinks, a pressure plate is provided on the top of the heat sink, a plurality of tightening screws are provided on the pressure plate, the tightening screws pass through the power distribution cabinet, and locking nuts are provided at both ends of the tightening screws.

[0011] Preferably, a plurality of sealing gaskets are arranged in the power distribution cabinet, and the tightening screw passes through the sealing gaskets.

[0012] Preferably, it also includes an active radiator installed on the outside of the heat pipe.

[0013] Preferably, the active radiator comprises a mounting frame installed on one side of the power distribution cabinet, a fan is installed in the mounting frame, and the fan corresponds to the heat dissipation pipe.

[0014] Preferably, a plurality of the heating resistors are connected in parallel.

[0015] It can be seen from the above technical scheme that the present application provides a playback current impedance type distribution cabinet. When the present application is in use, the heating resistor is installed on the outside of the distribution cabinet, and the external environment is used for cooling. During the normal startup of the oil production machine, the heating resistor is in the disconnection mode. When the oil production machine is turned off, the conversion switch automatically jumps, and the heating resistor forms a loop with the oil production machine. The electricity generated by the oil production machine when it continues to run due to inertia is treated by heat release in the form of heat in the oil production machine or the circuit through the heating resistor. The present application installs the heating resistor on the top of the distribution cabinet. The ventilation conditions on the top of the cabinet are good and it is not easy to be touched by the staff, which is conducive to heat dissipation and can effectively avoid being touched by people. In the heat dissipation process, the present application realizes heat dissipation through multiple parallel heating resistors, and adopts high-power thermal resistors. When installed, the heating power has a certain overload space, and can process the playback current within a large load range. If damage occurs during use, the corresponding connection can be disconnected in time. It can be applied to the impedance of playback current in various occasions, especially special occasions where grounding cannot be performed.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting the conversion switch and heating resistor, the thermal effect is used to remove the playback current in the system, which can better ensure the safety of components in the circuit. It can also be used in occasions that are not suitable for grounding treatment and stabilize the power balance of the distribution cabinet; 2. Through the setting of the circuit distributor, one circuit can be converted into multiple parallel circuits, reducing the power consumption of each thermal resistor, thereby increasing the service life of the thermal resistor and allowing frequent charging and discharging; 3. Through the setting of the heat dissipation structure, the heat dissipation of the thermal resistor can be accelerated, avoiding excessive heat concentration, causing thermal fatigue of the thermal resistor material, and further improving the service life of the resistor.

[0017] To summarize, the present application, through the setting of the oil extraction machine distribution cabinet, releases the playback current of the distribution cabinet by means of heat loss, which can not only ensure the safety around the distribution cabinet, but also further ensure the life of the electrical components in the circuit. In addition, the heat dissipation of the present application is located outside the distribution cabinet, which will not affect the heat dissipation of the distribution cabinet itself. In addition, the number of heating resistors set in the present application is large, and the heat dissipation efficiency is fast, which can effectively improve the overall life of the distribution cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solution of the present application, the following is a brief introduction to the drawings required for use in the implementation cases. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 This is a schematic diagram of the internal installation structure of a playback current impedance type power distribution cabinet proposed by the present invention; Figure 2 This is a schematic diagram of the structure of an active heat sink of a playback current impedance type power distribution cabinet proposed by the present invention; Figure 3 This is a schematic diagram of the support compartment installation structure of a playback current impedance type power distribution cabinet proposed by the present invention; Figure 4 This is an enlarged view of the structure at position A of a playback current impedance type power distribution cabinet proposed by the present invention; Figure 5 This is a schematic diagram of the circuit distributor structure of a playback current impedance type power distribution cabinet proposed by the present invention.

[0020] In the figure: 1 distribution cabinet, 2 conversion switch, 3 heat sink, 4 tightening screw, 5 locking nut, 6 pressure plate, 7 sealing gasket, 8 fan, 9 mounting frame, 10 heating resistor, 11 heat pipe, 12 supporting compartment, 13 connecting wire, 14 adjusting screw buckle, 15 insulating groove, 16 circuit distributor, 17 connecting pole piece. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0022] See also Figure 1-5, a playback current impedance type distribution cabinet, the present application removes the playback current in the current through the thermal effect, and will not affect the internal heat of the distribution cabinet, and has high heat dissipation efficiency, will not cause local excessive heat linearity, and can handle the heat in time without affecting the surrounding environment, specifically including a distribution cabinet 1, the distribution cabinet 1 is a conventional outdoor cabinet, using a white anti-corrosion coating, with the ability to prevent wind, sand, rain and snow, for details, please refer to the prior art, which is not protected by this application and will not be repeated here. The distribution cabinet 1 is equipped with a conversion switch 2 for controlling the oil production machine switch and a circuit distributor 16 for distributing current, wherein the conversion switch 2 can realize circuit switching after the circuit is disconnected, disconnect the oil production machine from other electrical components of the distribution cabinet 1, and connect it to the circuit distributor 16, so the circuit distributor 16 is connected to the conversion switch 2, and the circuit distributor 16 distributes the circuit to multiple routes, reducing the power consumption of a single heating unit, thereby improving the service life and reliability of the heat dissipation unit. The invention has the advantages of high performance and low cost. The plurality of heating units are also conducive to increasing the heat dissipation area and avoiding local high temperature. During the specific installation, the circuit distributor 16 is connected with a plurality of heating resistors 10 through the connecting wires 13. The plurality of heating resistors 10 are connected in parallel, have a large power range, and can process currents with relatively large fluctuations. Therefore, the problem of the playback current from large to small of the oil production machine or other equipment after power failure can be solved. The heating resistor 10 is located on the outside of the distribution cabinet 1. The heat of the heating resistor 10 is dissipated to the outside of the distribution cabinet 1, and no heat is generated inside the distribution cabinet 1. The heating resistor 10 is placed outside and can utilize natural wind to achieve a better cooling effect. The heat is dissipated by natural wind. When the heat dissipation capacity of the surrounding environment is poor, a heat dissipation structure is arranged outside the heating resistor 10. The heat dissipation structure increases the air flow rate around the heating resistor 10, thereby improving the heat dissipation capacity. When the present application is in use, the heating resistor 10 and other electrical components operate independently without affecting each other, and the reliability is high.

[0023] In the present invention, a regulating switch is installed on the circuit distributor 16, and the regulating switch is connected in series with the heating resistor 10. The regulating switch is used to adjust the connection state of each heating resistor 10. When installing, the connection amount is adjusted according to the number of installed heating resistors 10; Specifically, the regulating switch is an insulating groove 15 arranged on the circuit distributor 16, and the width of the insulating groove 15 is set to 2-3cm. Each heating resistor 10 is disconnected by the insulating groove 15. A connecting electrode 17 is arranged in the insulating groove 15, and the connecting electrode 17 is a copper sheet. The wire of the conversion switch 2 is connected to the connecting electrode 17. The circuit distributor 16 is also equipped with a plurality of adjusting screw buckles 14 corresponding to the number of connecting wires 13. The adjusting screw buckle 14 and the connecting electrode 17 are separated by the insulating groove 15. The adjusting screw buckle 14 is threadedly rotated on the circuit distributor 16. When the corresponding number of heating resistors 10 need to be connected, the adjusting screw buckle 14 is twisted to make it contact with the connecting electrode 17 to achieve the purpose of connection. One end of the adjusting screw buckle 14 is insulating ceramic or insulating plastic, and anti-slip grooves are arranged around it. It can be adjusted manually or by screwing with a screwdriver.

[0024] In the present invention, in order to improve the heat dissipation efficiency of the heating resistor 10, a heat dissipation pipe 11 is arranged on the outside of the heating resistor 10. The heat dissipation pipe 11 is made of brass or aluminum alloy. Heat transfer oil is arranged in the heat dissipation pipe 11 to increase the heat dissipation area of ​​the heating resistor 10. At the same time, after the heating resistor 10 generates heat, the heat transfer oil and the heat dissipation pipe 11 can absorb the heat in time. The heating resistor 10 is located in the heat dissipation pipe (11) and is filled with heat transfer oil around it. This protects the heating resistor (10) and can also reduce the oxidation problem of the heating resistor 10 caused by heating, thereby further improving the service life of the heating resistor.

[0025] In the present invention, in order to reduce the impact of the heating resistor 10 on the distribution cabinet 1 and increase the support for the heat dissipation pipe 11 so that it can be better fixed on the distribution cabinet 1, a supporting compartment 12 is installed on the top of the distribution cabinet 1. The interior of the supporting compartment 12 is a hollow structure. The heat dissipation pipe 11 is fixed on the supporting compartment 12 to block the heat dissipation pipe 11 and the distribution cabinet 1. At the same time, the wiring point of the heating resistor 10 is also set in the supporting compartment 12 for protection to reduce oxidative contact with the outside world. During manufacturing, the supporting compartment 12 and the heat dissipation pipe 11 can be fixed first and then installed on the distribution cabinet 1, and the connecting wire 13 passes through the supporting compartment 12 and is connected to the connecting wire 13 in the distribution cabinet 1.

[0026] In the present invention, a plurality of heat sinks 3 are sleeved on the heat pipe 11. The heat sink 3 is corrugated and has holes corresponding to the heat pipe 11. The heat sink 3 is sleeved on the heat pipe 11 to increase the heat dissipation area. A pressing plate 6 is provided on the top of the heat sink 3. After the heat sink 3 is installed, the heat sink 3 is compacted by the pressing plate 6, and the heat sink 3 is in close contact with the heat pipe 11. The number of heat sinks 3 installed is increased, thereby increasing the heat dissipation area and improving the heat dissipation effect. When fixed, a plurality of tightening screws 4 are provided on the pressing plate 6. The tightening screws 4 runs through the distribution cabinet 1, and the heat sink 3 is compacted by the pressure plate 6 and then fixed by the tightening screw 4, and locking nuts 5 are provided at both ends of the tightening screw 4. The locking nuts 5 are tightened to fix it. During use, the entire heat dissipation area increases geometrically, and the temperature is reduced by the natural wind flowing through the heat sink 3. If a lot of dust enters the heat sink 3, the heat sink 3 can be removed by removing the locking nuts 5 and simply rinsed. It is easy to install and disassemble, and regular cleaning is required, so that the heating resistor 10 has a higher heat dissipation efficiency.

[0027] Furthermore, in order to prevent rainwater from entering the distribution cabinet 1 along the tensioning screw 4, a plurality of sealing gaskets 7 are arranged in the distribution cabinet 1. The tensioning screw 4 passes through the sealing gasket 7. The sealing gasket 7 is made of silicone. The sealing gasket 7 can not only achieve the purpose of sealing, but also increase the contact area with the distribution cabinet 1 when fixed, thereby improving the reliability of the contact position between the tensioning screw 4 and the distribution cabinet 1 after being fixed, and preventing the large elastic force of the heat sink 3 from damaging the distribution cabinet 1.

[0028] In the present invention, in order to further improve the heat dissipation effect, an active radiator installed on the outside of the heat dissipation pipe 11 is also included, that is, wind power is provided in a windless environment to dissipate heat for the heating resistor 10, specifically; The active radiator includes a mounting frame 9 installed on one side of the distribution cabinet 1. The mounting frame 9 is minimized in size to reduce blocking of natural wind. A fan 8 is installed in the mounting frame 9. The fan 8 corresponds to the heat pipe 11 to provide wind power in a windless environment to avoid local overheating.

[0029] It can be seen from the above technical scheme that when the present application is in use, the heating resistor 10 is installed on the outside of the power distribution cabinet 1, and the external environment is used for cooling. During the normal startup of the oil production machine, the heating resistor 10 is in the disconnection mode. When the oil production machine is turned off, the conversion switch 2 automatically jumps, and the heating resistor 10 forms a loop with the oil production machine. The electricity generated when the oil production machine continues to run due to inertia is discharged through the heating resistor 10 in the form of heat by the electric energy in the oil production machine or the circuit. The present application installs the heating resistor 10 on the top of the power distribution cabinet 1. The ventilation conditions on the top of the cabinet are good and it is not easy to be touched by the staff, which is conducive to heat dissipation and can effectively avoid being touched by people. In the heat dissipation process, the present application realizes heat dissipation through multiple parallel heating resistors 10, and adopts high-power thermal resistors. When installed, the heating power has a certain overload space, and can process the playback current within a large load range. If damage occurs during use, the corresponding connection can be disconnected in time. It can be applied to the impedance of the playback current in various occasions, especially special occasions where grounding cannot be performed.

[0030] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope of the present application is indicated by the claims.

[0031] It should be understood that the present application is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The above-described embodiments of the present application do not constitute a limitation on the scope of protection of the present application.

Claims

1. A playback current impedance type power distribution cabinet, comprising a power distribution cabinet body (1), characterized in that: A conversion switch (2) for controlling an oil extraction machine switch and a circuit distributor (16) for distributing current are installed in the power distribution cabinet (1); the circuit distributor (16) is connected to the conversion switch (2); the circuit distributor (16) is connected to a plurality of heating resistors (10) via connecting wires (13); the heating resistors (10) are located outside the power distribution cabinet (1), and a heat dissipation structure is provided outside the heating resistors (10).

2. A playback current impedance type power distribution cabinet according to claim 1, characterized in that: The circuit distributor (16) is provided with a regulating switch, and the regulating switch is connected in series with the heating resistor (10).

3. A playback current impedance type power distribution cabinet according to claim 2, characterized in that: The regulating switch is an insulating groove (15) arranged on the circuit distributor (16), a connecting electrode (17) is arranged in the insulating groove (15), a plurality of adjusting screw buckles (14) corresponding to the connecting wires (13) are installed on the circuit distributor (16), and the adjusting screw buckles (14) are threadedly rotated on the circuit distributor (16).

4. A playback current impedance type power distribution cabinet according to claim 3, characterized in that: A heat dissipation pipe (11) is arranged outside the heating resistor (10), and heat transfer oil is arranged inside the heat dissipation pipe (11).

5. A playback current impedance type power distribution cabinet according to claim 4, characterized in that: A supporting compartment (12) is installed on the top of the power distribution cabinet (1), the heat dissipation pipe (11) is fixed on the supporting compartment (12), and the connecting wire (13) passes through the supporting compartment (12).

6. A playback current impedance type power distribution cabinet according to claim 5, characterized in that: The heat dissipation pipe (11) is sleeved with a plurality of heat dissipation fins (3), a pressure plate (6) is provided on the top of the heat dissipation fins (3), a plurality of tensioning screws (4) are provided on the pressure plate (6), the tensioning screws (4) penetrate the power distribution cabinet (1), and locking nuts (5) are provided at both ends of the tensioning screws (4).

7. A playback current impedance type power distribution cabinet according to claim 6, characterized in that: A plurality of sealing gaskets (7) are arranged in the power distribution cabinet (1), and the tightening screw (4) passes through the sealing gaskets (7).

8. The playback current impedance type power distribution cabinet according to claim 1, characterized in that: It also includes an active radiator installed on the outside of the radiating pipe (11).

9. The playback current impedance type power distribution cabinet according to claim 4, characterized in that: The active heat sink comprises a mounting frame (9) mounted on one side of the power distribution cabinet (1), a fan (8) being mounted in the mounting frame (9), and the fan (8) corresponds to the heat dissipation pipe (11).

10. The playback current impedance type power distribution cabinet according to claim 1, characterized in that: A plurality of heating resistors (10) are connected in parallel.

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