CN212876320U

CN212876320U - RDTU terminal with cooling device

Info

Publication number: CN212876320U
Application number: CN202022019414.2U
Authority: CN
Inventors: 韩斐迪; 吴盼盼; 李村村
Original assignee: Hangzhou Konglian Technology Co ltd
Current assignee: Hangzhou Konglian Technology Co ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-04-02
Anticipated expiration: 2030-09-15

Abstract

The utility model relates to a RDTU terminating machine with heat sink belongs to RDTU terminating machine technical field, and it includes that inside sets hollow terminal machine shell into, the terminal machine shell includes preceding terminal surface and rear end face, be equipped with a plurality of evenly distributed's heat dissipation through-hole on preceding terminal surface and the rear end face, the inside circuit board that is equipped with of terminal machine shell, circuit board level overlap joint is on the lateral wall of terminal machine shell, the circuit board includes first circuit board and second circuit board, be equipped with the air chamber between first circuit board and the second circuit board, the air chamber with heat dissipation through-hole intercommunication on preceding terminal surface and the rear end face. The method and the device have the effect of reducing the overhigh body temperature of the RDTU terminal during long-term use.

Description

RDTU terminal with cooling device

Technical Field

The application relates to the technical field of RDTU terminal machines, in particular to an RDTU terminal machine with a cooling device.

Background

The DTU is a data acquisition and monitoring terminal device installed at a conventional switching station (station), an outdoor small-sized switching station, a ring main unit, a small-sized transformer substation, a box-type transformer substation and the like. The remote control device has the functions of completing position signals of switching equipment consisting of a switching station and the like, executing a master station remote control command, and performing switching-on and switching-off operations on the switch.

The RTU is a basic unit of an automatic system, is mainly used for monitoring and controlling a distribution system transformer, a circuit breaker, a recloser, a sectionalizer, an on-column load switch, a ring main unit, a voltage regulator and a reactive compensation capacitor, is communicated with a main station system, provides data required by operation and management of the distribution system, and executes a control and regulation instruction sent by the main station system to remote equipment.

The RDTU device is a synthesis device of an RTU and a DTU, can be used for collecting data, wirelessly transmits the data and is the best device for collecting industrial data. RDTU devices typically require use with sensors and control boxes. The sensor is firstly used for detecting, then the RDTU device is used for carrying out data acquisition and wireless transmission, and the control box is used for controlling the RDTU device.

However, the RDTU terminal is used as a data collection and transmission center, a plurality of connection ports are fully connected with data lines, and in a long-time use state, the body of the RDTU terminal can emit excessive heat, and if the heat cannot be taken away in time, the RDTU terminal can be burnt out.

Therefore, a new solution is needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In order to reduce the too high fuselage temperature of RDTU terminal machine long-term use, this application provides an RDTU terminal machine with heat sink.

The application provides a RDTU terminal machine with heat sink adopts following technical scheme:

the RDTU terminal comprises a hollow terminal shell, wherein the terminal shell comprises a front end face and a rear end face, a plurality of uniformly distributed heat dissipation through holes are formed in the front end face and the rear end face, a circuit board is arranged in the terminal shell and horizontally lapped on the side wall of the terminal shell, the circuit board comprises a first circuit board and a second circuit board, an air cavity is formed between the first circuit board and the second circuit board, and the air cavity is communicated with the heat dissipation through holes in the front end face and the rear end face.

Through adopting above-mentioned technical scheme, all set up the heat dissipation through-hole on the preceding terminal surface of hollow terminal machine shell and rear end face to set up the air chamber between first circuit board and second circuit board, make RDTU terminal machine in the use bigger degree dispel the heat through heat dissipation through-hole and air chamber, effectively reduce the long heat that produces because of using for a long time of RDTU terminal machine, reduce the temperature of RDTU terminal machine, protection components and parts improve the security.

Preferably, the terminal housing includes an upper housing and a lower housing, the upper housing is detachably connected to the lower housing, and a detachable connection portion of the upper housing and the lower housing is located on a side wall of the air cavity.

Through adopting above-mentioned technical scheme, the setting up of heat dissipation through-hole and air chamber makes the inside easy deposition of RDTU terminating machine after long-time the use, goes up the casing and can dismantle with lower casing and be connected, is convenient for in time clear up the deposition on first circuit board and the second circuit board, guarantees the normal work of circuit board to reduce the problem that the electric plate thermal diffusivity that brings because of the deposition weakens.

Preferably, the circuit board is connected with a plurality of connecting ports, and the connecting ports are arranged at the communication positions of the air cavity and the front end face or/and the rear end face.

By adopting the technical scheme, the connecting port is exposed on the front end face or/and the rear end face, so that the element device can be conveniently plugged and pulled when in use.

Preferably, the bottom of the terminal housing is provided with a base, the base is provided with a cooling fan, and an air outlet of the cooling fan is aligned with the cooling through hole.

Through adopting above-mentioned technical scheme, radiator fan's air outlet aims at the heat dissipation through-hole, can accelerate the air flow, takes away the heat that the RDTU terminal machine produced because of using for a long time more effectively.

Preferably, the heat dissipation fan is driven by a motor, a fan switch is arranged on the heat dissipation fan, and the motor is respectively electrically connected with the power supply and the fan switch.

By adopting the technical scheme, the opening and closing of the cooling fan can be manually controlled according to the service condition of the RDTU terminal, and electric energy is saved.

Preferably, the motor of the cooling fan is driven by a control circuit, and the control circuit includes a power supply, a comparison unit, and an execution unit.

Through adopting above-mentioned technical scheme, realize radiator fan's automatic start-stop through control circuit, reduced manual operation, it is more intelligent.

Preferably, the comparison unit comprises a reference voltage module and a temperature measurement module, a comparator is arranged in the comparison unit, the temperature measurement module is connected with the non-inverting input end of the comparator, the reference voltage module is connected with the inverting input end of the comparator, the output end of the comparator is connected with the execution unit, the temperature measurement module comprises a thermistor, and the thermistor is arranged on the terminal machine shell.

By adopting the technical scheme, the temperature of the shell of the terminal is identified through the thermistor in the temperature measurement module, if the thermistor with the negative temperature coefficient is used, the smaller the resistance value of the thermistor is, the lower the level generated at the two ends of the thermistor is, the higher the level of the in-phase input end of the comparator is, and due to the fact that the comparison voltage is arranged in the reference voltage module, when the level of the in-phase input end of the comparator is higher than the level of the reverse phase input end, the execution unit is conducted.

Preferably, the reference voltage module includes a first resistor and a second resistor, the comparison unit includes a third resistor and a fourth resistor, one end of the first resistor is connected to the power supply, one end of the second resistor is grounded, the other end of the first resistor is connected to one end of the third resistor after being connected to the other end of the second resistor, and the other end of the third resistor is connected to the inverting input terminal of the comparator.

By adopting the technical scheme, the second resistor is grounded as a protection resistor, the third resistor is generally smaller in resistance value and is a protection resistor of the comparator, the first resistor is a main comparison resistor, and after the resistor in the reference voltage module is set, the voltage value of the inverting input end of the comparator is a fixed value and is used for being compared with the voltage value of the non-inverting input end.

Preferably, one end of the thermistor is connected with a power supply, one end of the fourth resistor is grounded, and the other end of the thermistor is connected with the non-inverting input end of the comparator after being connected with the other end of the fourth resistor.

By adopting the technical scheme, the fourth resistor is grounded as a protective resistor, and the thermistor is used for identifying the temperature of the shell of the terminal.

Preferably, the execution unit includes a motor and a triode, the triode includes a collector, an emitter and a base, the base of the triode is connected with the output end of the comparator, the collector of the triode is connected with one end of the motor of the cooling fan, the other end of the motor of the cooling fan is connected with a power supply, and the emitter of the triode is grounded.

By adopting the technical scheme, when the high level is output from the output end of the comparator, the triode is conducted, and the motor of the cooling fan is started; otherwise, the triode is in a disconnected state, and the motor of the cooling fan is turned off.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the front end face and the rear end face of the hollow terminal machine shell are both provided with the heat dissipation through holes, and the air cavity is arranged between the first circuit board and the second circuit board, so that the RDTU terminal machine can dissipate heat to a greater extent through the heat dissipation through holes and the air cavity in the using process, the heat generated by the machine length of the RDTU terminal machine due to long-time use is effectively reduced, the temperature of the RDTU terminal machine is reduced, components are protected, and the safety is improved;

2. the cooling fan with the air outlet aligned with the cooling through hole can accelerate air flow and effectively take away heat generated by the RDTU terminal due to long-time use.

Drawings

FIG. 1 is a schematic structural view of a terminal housing of the present application;

FIG. 2 is a cross-sectional view of a terminal housing of the present application;

FIG. 3 is a schematic structural diagram of an RDTU terminal with a cooling device according to the present application;

fig. 4 is a control circuit diagram in embodiment 2 of the present application.

Reference number description, 1, terminal housing; 11. a front end face; 12. a rear end face; 13. an upper housing; 14. a lower housing; 2. a heat dissipating through hole; 3. a circuit board; 31. a first circuit board; 32. a second circuit board; 4. an air chamber; 5. a connection port; 6. a base; 7. a heat radiation fan; 71. a motor; 8. a comparison unit; 81. a reference voltage module; 82. a temperature measuring module; 9. an execution unit; VCC, power supply; n1, a comparator; VR1, thermistor; r1, a first resistor; r2, a second resistor; r3, third resistor; r4, fourth resistor; q1, triode.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses RDTU terminal machine with heat sink.

Example 1:

referring to fig. 1 and 2, an RDTU terminal with a cooling device includes that inside sets hollow terminal housing 1 into, terminal housing 1 includes preceding terminal surface 11 and rear end 12, be equipped with a plurality of evenly distributed's heat dissipation through-hole 2 on preceding terminal surface 11 and the rear end 12, terminal housing 1 is inside to be equipped with circuit board 3, circuit board 3 level overlap joint is on terminal housing 1's lateral wall, circuit board 3 includes first circuit board 31 and second circuit board 32, be equipped with air chamber 4 between first circuit board 31 and the second circuit board 32, air chamber 4 and preceding terminal surface 11 and the heat dissipation through-hole 2 intercommunication on the rear end 12.

The heat dissipation through holes 2 are formed in the front end face 11 and the rear end face 12 of the hollow terminal machine shell 1, and the air cavity 4 is formed between the first circuit board 31 and the second circuit board 32, so that the RDTU terminal machine can dissipate heat through the heat dissipation through holes 2 and the air cavity 4 to a greater extent in the use process, the heat generated by the RDTU terminal machine length due to long-time use is effectively reduced, the temperature of the RDTU terminal machine is reduced, components are protected, and the safety is improved.

The setting of heat dissipation through-hole 2 and air chamber 4 makes the inside easy deposition of RDTU terminating machine after using for a long time, terminating machine shell 1 includes casing 13 and lower casing 14, casing 13 can be dismantled with lower casing 14 and be connected, the detachable junction of casing 13 and lower casing 14 is located the lateral wall of air chamber 4, can use the mode that buckle formula is connected, extend the buckle on the lateral wall on both sides about lower casing, the position that upper casing corresponds casing buckle sets up corresponding draw-in groove down, it is convenient for in time to clear up the deposition on first circuit board 31 and the second circuit board 32 with lower casing to dismantle down the upper casing, guarantee circuit board 3's normal work, and reduce the problem that the electric plate that dispels the heat brought because of the deposition weakens.

The circuit board 3 is connected with a plurality of connecting ports 5, and in order to facilitate plugging and unplugging of components during use, the connecting ports 5 are arranged at the communication positions of the air cavity and the front end surface 11 or/and the rear end surface 12.

Referring to fig. 3, a base 6 is arranged at the bottom of the terminal housing 1, a heat dissipation fan 7 is arranged on the base 6, and an air outlet of the heat dissipation fan 7 is aligned with the heat dissipation through hole 2, so that air flow can be accelerated, and heat generated by the RDTU terminal due to long-time use can be effectively taken away. The heat dissipation fan 7 is driven by the motor 71, the fan switch is arranged on the heat dissipation fan 7, the motor 71 is electrically connected with the power supply and the fan switch respectively, the opening and closing of the heat dissipation fan 7 can be controlled manually according to the use condition of the RDTU terminal, and electric energy is saved.

The implementation principle of the embodiment of the application is as follows: the connecting port 5 is inserted with a plurality of components for use, after a period of time, the terminal machine shell 1 can be touched by hands to feel the temperature of the terminal machine shell 1, if the terminal machine shell feels hot, the fan switch is turned on, and the heat dissipation fan 7 starts to blow air towards the heat dissipation through hole 2 of the terminal machine shell 1 to take away heat, so that the effect of cooling is achieved.

Example 2:

referring to fig. 4, the difference between this embodiment and embodiment 1 is that a motor 71 of the cooling fan 7 is driven by a control circuit, the control circuit includes a power VCC, a comparison unit 8, and an execution unit 9, and the cooling fan 7 is automatically turned on and off by the control circuit, so that manual operation is reduced, and the cooling fan is more intelligent.

The comparison unit 8 comprises a reference voltage module 81 and a temperature measurement module 82, a comparator N1 is arranged in the comparison unit 8, the temperature measurement module 82 is connected with a non-inverting input end of a comparator N1, the reference voltage module 81 is connected with an inverting input end of a comparator N1, an output end of the comparator N1 is connected with the execution unit 9, the temperature measurement module 82 comprises a thermistor VR1, and the thermistor VR1 is arranged on the terminal housing 1.

The temperature of the terminal housing 1 is identified through the thermistor VR1 in the temperature measurement module 82, the negative temperature coefficient thermistor VR1 is used, when the temperature of the terminal housing 1 is high, the smaller the resistance value of the thermistor VR1 is, the lower the level generated at two ends of the thermistor VR1 is, the higher the level of the non-inverting input end of the comparator N1 is, because the comparison voltage is set in the reference voltage module 81, when the level of the non-inverting input end of the comparator N1 is higher than the level of the inverting input end, the execution unit 9 is turned on.

The reference voltage module 81 includes a first resistor R1 and a second resistor R2, the ground of the second resistor R2 is a protection resistor, the comparison unit 8 includes a third resistor R3 and a fourth resistor R4, one end of the first resistor R1 is connected to the VCC power supply, one end of the second resistor R2 is grounded, the other end of the first resistor R1 is connected to one end of the third resistor R3 after being connected to the other end of the second resistor R2, the other end of the third resistor R3 is connected to the inverting input terminal of the comparator N1, the third resistor R3 is generally smaller in resistance value than the protection resistor of the comparator N1, the first resistor R1 is a main comparison resistor, and after the resistors in the reference voltage module 81 are set, the voltage value of the inverting input terminal of the comparator N1 is a constant value for comparison with the voltage value of the non-inverting input terminal.

One end of the thermistor VR1 is connected with a power supply VCC, the thermistor VR1 is used for identifying the temperature of the terminal housing 1, one end of the fourth resistor R4 is grounded, the fourth resistor R4 is grounded and is a protective resistor, and the other end of the thermistor VR1 is connected with the other end of the fourth resistor R4 and then is connected with the non-inverting input end of the comparator N1.

The execution unit 9 comprises a motor 71 and a triode Q1, the triode Q1 comprises a collector, an emitter and a base, the base of the triode Q1 is connected with the output end of the comparator N1, the collector of the triode is connected with one end of the motor 71 of the cooling fan 7, the other end of the motor 71 of the cooling fan 7 is connected with a power supply VCC, the emitter of the triode Q1 is grounded, when a high level is output from the output end of the comparator N1, the triode Q1 is conducted, and the motor 71 of the cooling fan 7 is started; otherwise, the transistor Q1 is in an off state, and the motor 71 of the cooling fan 7 is turned off.

The implementation principle of the embodiment of the application is as follows: the automatic on-off of the cooling fan 7 is realized through the circuit connection of the comparison unit 8 and the execution unit 9, the thermistor VR1 in the temperature measurement module 82 identifies the temperature of the terminal housing 1, the negative temperature coefficient thermistor VR1 is used, when the temperature of the terminal housing 1 is high, the smaller the resistance value of the thermistor VR1 is, the lower the level generated at the two ends of the thermistor VR1 is, the higher the level of the in-phase input end of the comparator N1 is, because the comparison voltage is set in the reference voltage module 81, when the level of the in-phase input end of the comparator N1 is high to a certain value, the higher the level of the in-phase input end of the comparator N1 is than the level of the reverse phase input end, the triode Q1 in the execution unit 9 is normally conducted, the motor 71 starts to work, and the cooling fan 7 starts to blow air towards the cooling through hole 2 of the terminal housing.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a RDTU terminal machine with heat sink which characterized in that: set hollow terminal machine shell (1) to including inside, terminal machine shell (1) is including preceding terminal surface (11) and rear end face (12), be equipped with a plurality of evenly distributed's heat dissipation through-hole (2) on preceding terminal surface (11) and rear end face (12), terminal machine shell (1) inside is equipped with circuit board (3), circuit board (3) level overlap joint is on the lateral wall of terminal machine shell (1), circuit board (3) include first circuit board (31) and second circuit board (32), be equipped with air chamber (4) between first circuit board (31) and second circuit board (32), air chamber (4) with heat dissipation through-hole (2) intercommunication on preceding terminal surface (11) and rear end face (12).

2. The RDTU terminal with a cooling device of claim 1, wherein: the terminal housing (1) comprises an upper housing (13) and a lower housing (14), the upper housing (13) is detachably connected with the lower housing (14), and the detachable connection position of the upper housing (13) and the lower housing (14) is located on the side wall of the air cavity (4).

3. The RDTU terminal with a cooling device of claim 1, wherein: the air-conditioning circuit is characterized in that the circuit board (3) is connected with a plurality of connecting ports (5), and the connecting ports (5) are arranged at the communicated positions of the air cavity (4) and the front end face (11) or/and the rear end face (12).

4. The RDTU terminal with a cooling device of claim 1, wherein: the terminal is characterized in that a base (6) is arranged at the bottom of the terminal shell (1), a heat dissipation fan (7) is arranged on the base (6), and an air outlet of the heat dissipation fan (7) is aligned to the heat dissipation through hole (2).

5. The RDTU terminal with a cooling device of claim 4, wherein: the heat dissipation fan (7) is driven by a motor (71), a fan switch is arranged on the heat dissipation fan (7), and the motor is electrically connected with a power supply and the fan switch respectively.

6. The RDTU terminal with a cooling device of claim 4, wherein: the motor (71) of the heat radiation fan (7) is driven by a control circuit, and the control circuit comprises a power supply, a comparison unit (8) and an execution unit (9).

7. The RDTU terminal with a cooling device of claim 6, wherein: the terminal comprises a comparison unit (8) and is characterized in that the comparison unit (8) comprises a reference voltage module (81) and a temperature measurement module (82), a comparator is arranged in the comparison unit (8), the temperature measurement module (82) is connected with the in-phase input end of the comparator, the reference voltage module (81) is connected with the reverse-phase input end of the comparator, the output end of the comparator is connected with an execution unit (9), the temperature measurement module (82) comprises a thermistor, and the thermistor is arranged on a terminal shell (1).

8. The RDTU terminal with a cooling device of claim 7, wherein: the reference voltage module (81) comprises a first resistor and a second resistor, the comparison unit (8) comprises a third resistor and a fourth resistor, one end of the first resistor is connected with the power supply, one end of the second resistor is grounded, the other end of the first resistor is connected with the other end of the second resistor and then connected with one end of the third resistor, and the other end of the third resistor is connected with the inverting input end of the comparator.

9. The RDTU terminal with a cooling device of claim 8, wherein: one end of the thermistor is connected with a power supply, one end of the fourth resistor is grounded, and the other end of the thermistor is connected with the non-inverting input end of the comparator after being connected with the other end of the fourth resistor.

10. The RDTU terminal with a cooling device of claim 9, wherein: the execution unit (9) comprises a motor (71) and a triode, the triode comprises a collector, an emitter and a base, the base of the triode is connected with the output end of the comparator, the collector of the triode is connected with one end of the motor (71) of the cooling fan (7), the other end of the motor (71) of the cooling fan (7) is connected with a power supply, and the emitter of the triode is grounded.