European-style box-type transformer substation with active heat dissipation and anti-theft functions

Abstract

A European-style box transformer substation with active heat dissipation and antitheft functions belongs to the technical field of box transformer substations and comprises an European-style box transformer substation body, a rainwater sensor, an electromagnetic valve, an active heat dissipation mechanism, a temperature detection control circuit and an alarm circuit. The active heat dissipation mechanism comprises a fan, an electric push rod, a fixing frame, a sealing plate and a power switch; the active heat dissipation mechanism, the electromagnetic valve and the box transformer body are installed together, and the rainwater sensor, the temperature detection control circuit and the alarm circuit are installed in the element box and electrically connected. Based on the European-style box transformer substation body, when the temperature in the box body is too high, the sealing plate can be automatically opened through the electric push rod, heat is actively dissipated through the high-pressure air suction and supply fan, and the heat dissipation efficiency in the box body is improved; and when a person approaches the door of the box body for a certain time, the alarm circuit can give an alarm in time through the alarm to threaten the person. According to the utility model, over-temperature work abnormity and damage of electrical equipment in the box body are reduced, and the probability that the electrical equipment in the box body is damaged and stolen is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of prefabricated substation equipment, and in particular to a European-style prefabricated substation with active heat dissipation and anti-theft functions. Background Technology

[0002] European-style distribution cabinets, also known as prefabricated substations or simply European-style box-type substations, are devices that integrate high and low voltage primary equipment, transformers, and secondary equipment into a sealed, corrosion-resistant, and movable outdoor enclosure within a factory. European-style box-type substations offer high flexibility and adaptability, meeting the needs of diverse users and are widely used in locations with high equipment performance requirements, such as industrial areas and ports.

[0003] While existing European-style prefabricated substations meet practical needs to some extent, their structural limitations also present several technical drawbacks. Firstly, to facilitate maintenance, they are typically installed at a low height, making them relatively easy to vandalize and steal. Secondly, the integrated sealing of multiple devices within the enclosure hinders heat dissipation, potentially leading to overheating and adversely affecting the normal operation of the equipment, and in extreme cases, causing damage. Although current technology utilizes louvers on the outer side of the enclosure for heat dissipation, this is not an active cooling method and its effectiveness is limited. Therefore, providing a European-style prefabricated substation with anti-theft warnings and active cooling functions is highly necessary. Utility Model Content

[0004] To overcome the drawbacks of existing European-style prefabricated substations due to structural limitations, as described in the background section, this utility model provides a European-style prefabricated substation that, through the combined action of related mechanisms, automatically opens a heat dissipation plate when the internal temperature is too high, and actively dissipates heat through a high-pressure suction fan, thus improving the heat dissipation efficiency within the substation. Furthermore, if someone approaches the substation door for a certain period, an alarm will be triggered to deter them, reducing the likelihood of overheating and malfunction of electrical equipment within the substation, as well as the probability of damage or theft of electrical equipment. This is a European-style prefabricated substation with active heat dissipation and anti-theft functions.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A European-style prefabricated substation with active heat dissipation and anti-theft functions includes a substation body, a rain sensor, a solenoid valve, and also has an active heat dissipation mechanism, a temperature detection and control circuit, and an alarm circuit. The active heat dissipation mechanism includes a fan, an electric push rod, a mounting bracket, a sealing plate, and a power switch. The substation body has a guide hole on one side of its enclosure. One end of the mounting bracket is fixedly installed inside the enclosure at the location of the heat dissipation hole, and the other end of the mounting bracket has a mounting hole. The outer side of the electric push rod's cylinder is fixedly installed inside the mounting hole. One side of the sealing plate is fixedly installed on one side of the movable column of the electric push rod and located at the outer end of the enclosure. A heat dissipation hole is located below the guide hole in the enclosure, and the fan is fixedly installed inside the enclosure. Inside the housing, the upper end of the fan's outlet pipe is fixedly installed inside the heat dissipation hole; a limit plate is fixedly installed in the middle of the movable column of the electric push rod; there are at least two power switches, which are respectively fixedly installed on both sides of one end of the guide hole; an air inlet pipe is fixedly installed on the other side of the housing, and the outer end of the air inlet pipe is connected to one end of the solenoid valve; the rain sensor, temperature detection and control circuit, and alarm circuit are installed in the component box, which is fixedly installed on the upper front of the housing; the multi-channel power output terminal of the temperature detection and control circuit is electrically connected to the respective power input terminals of the electric push rod, solenoid valve, and fan; the signal output terminal of the rain sensor is electrically connected to the signal input terminal of the temperature detection and control circuit.

[0007] Furthermore, the inner diameter of the guide hole is larger than the outer diameter of the movable column of the electric push rod; the outer diameter of the limiting plate is larger than the outer diameter of the guide hole and the height of the limiting plate is larger than the height of the power switch.

[0008] Furthermore, the solenoid valve is a normally closed valve core solenoid valve.

[0009] Furthermore, the power switch is a push-button type micro switch with normally closed contacts.

[0010] Furthermore, a sealing gasket is fixedly installed on one side of the sealing plate.

[0011] Furthermore, the temperature detection and control circuit includes an electrically connected relay and a temperature switch. One end of the temperature switch is connected to the positive power input terminal of the first relay. The control power input terminal of the first relay is connected to the positive control power input terminal of the third relay. The normally open contact of the first relay is connected to the positive power input terminals of the second and third relays. The negative power input terminal of the first relay is connected to the negative power input terminals of the second and third relays and the negative control power input terminal. One normally closed contact and one normally open contact of the third relay are respectively connected to one end of each of the two power switches.

[0012] Furthermore, the alarm circuit includes an electrically connected pyroelectric infrared detection module, an alarm, and a delay circuit module. The positive power input terminal of the pyroelectric infrared detection module is connected to the positive control power input terminal of the delay circuit module. The negative power input terminal and negative control power input terminal of the delay circuit module are connected to the negative power input terminal of the pyroelectric infrared detection module and the negative power input terminal of the alarm. The positive power input terminal of the alarm is connected to the power output terminal of the delay circuit module. The positive power output terminal of the pyroelectric infrared detection module is connected to the positive power input terminal of the delay circuit module.

[0013] Compared with existing technologies, the advantages of this utility model are as follows: Based on the European-style transformer substation body, this utility model, through the combined action of related mechanisms, can automatically open the sealing plate via an electric push rod when the temperature inside the substation is too high, and actively dissipate heat through a high-pressure suction fan, thus improving the heat dissipation efficiency inside the substation; furthermore, if someone approaches the substation door for more than a certain period of time, the alarm circuit can promptly trigger an alarm to deter them. This utility model reduces the likelihood of abnormal operation and damage to electrical equipment inside the substation due to overheating, as well as the probability of damage or theft of electrical equipment inside the substation. In summary, this utility model has good application prospects. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model.

[0016] Figure 2 This is a partial structural schematic diagram of the present invention.

[0017] Figure 3 This is the circuit diagram of this utility model. Detailed Implementation

[0018] Figure 1 , 2As shown in Figures 1 and 3, a European-style transformer substation with active heat dissipation and anti-theft functions includes a European-style transformer substation body 1, a power module T1, a rain sensor T2, and a solenoid valve DC. It also includes an active heat dissipation mechanism, a temperature detection and control circuit 2, and an alarm circuit 3. The active heat dissipation mechanism includes a high-pressure suction fan M, an electric push rod M1, a fixing frame 41, a sealing plate 42, and power switches S1 and S2. The left side of the transformer substation body has a guide hole 101 in the middle. The upper and lower sides of the left end of the "]"-shaped fixing frame 41 are welded to the upper and lower ends of the inner side of the heat dissipation hole 101. The right side of the fixing frame 41 has a mounting hole in the middle. The outer side of the electric push rod M1 is bolted to the inner end of the mounting hole. The right side of the sealing plate 42 is welded to the left side of the movable column of the electric push rod M1 and located at the left outer end of the transformer body. A heat dissipation hole 10 is located at the lower end of the guide hole. 2. The lower end of the high-pressure suction fan M is fixedly installed in the lower left middle part of the box body by bolts. The outer side of the upper left end of the high-pressure suction fan M is welded to the inner side of the heat dissipation hole 102. A limit plate 4 is welded to the middle of the outer side of the movable column of the electric push rod. There are two power switches S1 and S2. There is a fixing hole 103 on the outer side of the front and rear sides of the box body at the upper end of the guide hole. The two power switches S2 and S1 are glued to the two fixing holes 103 respectively. An air inlet pipe 104 that communicates with the inside is welded to the right side of the box body. The outer end of the air inlet pipe 104 is connected to one end of the solenoid valve DC by thread. The power module T1, rain sensor T2, temperature detection and control circuit 2, and alarm circuit 3 are installed on the circuit board inside the component box 5. The probe of the rain sensor T2 is sealed outside the upper end of the component box 5. The component box 5 is horizontally installed on the upper front side of the box body (located on the upper side of the box door).

[0019] Figure 1 , 2As shown in Figure 3, the inner diameter of the guide hole 101 is larger than the outer diameter of the movable column of the electric push rod M; the outer diameter of the limiting plate 4 is larger than the outer diameter of the guide hole 101, and the height of the upper end of the limiting plate 4 is greater than the height of the power switches S1 and S2. The solenoid valve DC is a normally closed valve core solenoid valve. The button of the power switch S2 on the outer side of the box is located on the left outer side of the box, and the button of the power switch S1 on the inner side of the box is located on the left inner side of the box. The power switches S1 and S2 are push-button type normally closed contact micro power switches. A sealing gasket 421 with the same outer diameter as the sealing plate is glued to the right side of the sealing plate. When the sealing plate 42 is at the right stop point and its gasket 421 contacts the outer left side of the box (contacting the button of the power switch S2), the internal contact of the power switch S2 on the left side of the box is open. When the sealing plate is at the left stop point and the left end of the limiting plate 4 contacts the inner left end of the box (contacting the button of the power switch S1), the internal contact of the power switch S1 on the left side of the box is open. The temperature detection and control circuit includes relays K1, K2, and K3 connected via circuit board wiring, and a temperature switch RT. One end of the temperature switch RT is connected to the positive power input terminal of the first relay K1. The control power input terminal of the first relay K1 is connected to the positive control power input terminal of the third relay K3. The normally open contact of the first relay K1 is connected to the positive power input terminals of the second relay K2 and the third relay K3. The negative power input terminal of the first relay K1 is connected to the negative power input terminals of the second relay K2, the third relay K3, and the negative control power input terminal. The temperature switch RT is installed separately at the upper part of the enclosure (there is an opening at the upper part of the enclosure, through which the wire connected to the temperature switch RT enters the enclosure; the opening is sealed with sealant). One normally closed contact and one normally open contact of the third relay K3 are connected to one end of the two power switches S2 and S1 via wires. The alarm circuit includes a pyroelectric infrared detection module T3, an alarm B, and a delay circuit module T4 connected via circuit board wiring. The detector head of the pyroelectric infrared detection module T3 is sealed outside the opening at the lower end of the component box 5. The positive power input terminal 1 of the pyroelectric infrared detection module T3 is connected to the positive control power input terminal 3 of the delay circuit module T4. The negative power input terminal 2 and the negative control power input terminal 4 of the delay circuit module T4 are connected to the negative power input terminal 2 of the pyroelectric infrared detection module T3 and the negative power input terminal of the alarm B. The positive power input terminal of the alarm B is connected to the power output terminal 5 of the delay circuit module T4. The positive power output terminal 3 of the pyroelectric infrared detection module T3 is connected to the positive control power input terminal 1 of the delay circuit module T4.

[0020] Figure 1 , 2As shown in Figure 3, the power input terminals 1 and 2 of the power module T1, the two control power input terminals of the relay K2 in the temperature detection and control circuit, and the two poles of the 220V AC power supply are connected by wires. The power output terminals 3 and 4 of the power module T1 are connected by wires to the power input terminals 1 and 2 of the rain sensor T2, the control power input terminal and negative power input terminal of the relay K1 in the temperature detection and control circuit, the power input terminal of the alarm circuit, and the pyroelectric infrared detection module T3, pins 1 and 2. The other end of the power switch S1, the other normally open contact of the relay K3, the other end of the power switch S2, the other normally closed contact of the relay K3, and the positive and negative and negative positive power input terminals of the electric push rod M1 are connected by wires. The normally open contact terminal and negative power input terminal of the relay K1 are connected by wires to the two ends of the DC power input of the solenoid valve. The signal output terminal 3 of the rain sensor T2 is connected by wires to the other end of the temperature switch RT in the temperature detection and control circuit. The two normally open contacts of relay K2 and the two power input terminals of high-pressure suction fan M are connected by wires. Figure 3 In this circuit, power module T1 is a finished product of AC 220V to DC 12V switching power supply module; electric push rod M1 (40W) is a finished product of reciprocating electric telescopic rod; relays K1, K2, and K3 are DC 12V; solenoid valve DC power 2W; high-pressure suction fan M power 1.5KW; alarm B is a finished product of MF12V active continuous audible alarm; temperature switch RT is a finished product of KSD301, a finished product of normally open contact snap-action temperature control switch with a temperature of 40℃; delay circuit module T4 is a finished product of YF-79 time relay module, which has two power input terminals 1 and 2, two control power input terminals 3 and 4, one normally open contact terminal 5, and one normally closed contact terminal 6 (in the 6-script embodiment, it is left floating), and also has four setting buttons. By adjusting the four setting buttons respectively, it is possible to... The system is configured to output power for a set time after two control power input terminals receive control power signals. In application, the normally open power output terminal outputs power for a certain period after each input of control power signals. Rain sensor T2 is a model JD-Y1.0 rain sensor with two power input terminals (pins 1 and 2) and one control power output terminal (pin 3). Pin 3 outputs a high-level signal when the probe detects rainwater, and no output otherwise. The pyroelectric infrared detection module T3 is a model HC-SR501 human infrared sensing electronic module sensor with two power input terminals (pins 1 and 2) and one control power output terminal (pin 3). Pin 3 outputs a high-level signal when the probe detects a human body, and no output otherwise (it has an internal distance adjustment knob; this new model can be adjusted to a detection distance of approximately 1.5 meters). All of the above electrical components are existing mature technologies and will not be described in detail in this application.

[0021] Figure 1 , 2As shown in Figures 1 and 3. This utility model is based on a European-style transformer substation body 1, which integrates high and low voltage primary equipment, transformers, and secondary equipment in a sealed, corrosion-resistant, and movable outdoor enclosure within a factory. The European-style transformer substation body 1 has high flexibility and adaptability, and can meet the needs of different users. It is widely used in places with high equipment performance requirements, such as industrial areas and ports. The above are existing mature technologies, and will not be described in detail in this application. After the 220V power supply enters the power input terminal of the power module T1, the 3rd and 4th pins of the power module T1 output a stable DC 12V power supply, which enters the power input terminals of the rain sensor T2, the temperature detection and control circuit, and the alarm circuit. When there is no rain outside, the probe of the rain sensor T2 does not output a voltage signal at its 3rd pin because it cannot detect the rain signal, and the subsequent relays K1, K2, and K3 will not be energized and engaged. When it rains outside, after the probe of the rain sensor T2 detects the rain signal, its 3rd pin outputs a voltage signal into one end of the temperature switch RT, preparing for the opening of the sealing plate 42 in case of overheating inside the enclosure. When the temperature inside the chamber is below 40℃, the internal contacts of the temperature switch RT will not close. As a result, relays K1, K2, and K3 will not be energized and will not engage, and the electric push rod M will not be energized and will not operate. When the temperature inside the chamber exceeds 40℃, the internal contacts of the temperature switch RT will close. This energizes relay K1, causing its control power input terminal and normally open contact to close. Consequently, relays K2 and K3 are energized, causing their control power input terminals and normally open contacts to close as well (simultaneously, the solenoid valve DC is energized, opening its valve core, allowing external air to enter the chamber for better heat dissipation). After relay K2 is energized and its control power input terminal and normally open contact are closed, the high-pressure suction fan M is energized to extract the hot air from the chamber and discharge it to the outside through the heat dissipation hole 102. After relay K3 is energized and its control power input terminal and normally open contact are closed, the positive and negative power input terminals of the electric push rod M1 are energized, causing its push rod to push the sealing plate 42 to move to the outside. The lower end of the sealing plate no longer blocks the heat dissipation hole 102, ensuring that the hot air extracted by the high-pressure suction fan M can be discharged to the outside of the chamber. When the push rod of the electric push rod M1 moves the limit plate 4 to the left front and into position, the left front end of the limit plate 4 presses against the button of the power switch S1, and the internal contacts of the power switch S1 open. Since the other end of the power switch S1 is connected to the positive power input terminal of the electric push rod M1 via a wire, the electric push rod M1 will be de-energized at this moment to prevent the electric push rod from moving the sealing plate to the left outer end uncontrollably and causing equipment damage. When the temperature inside the chamber drops to 40℃ due to the action of the high-pressure suction fan M, the internal contacts of the temperature switch RT open, the relays K1, K2, and K3 are de-energized and no longer engage, and the solenoid valve DC is de-energized and closes to prevent rainwater or other substances from entering the chamber when there is no overheating (the high-pressure suction fan M is de-energized and no longer works).When relay K3 loses power, it no longer engages, closing its control power input terminal and normally closed contact. Consequently, the positive and negative power input terminals of electric push rod M1 are energized, causing its push column to move the sealing plate 42 inward. The lower end of the sealing plate blocks the heat dissipation hole 102, preventing the cabinet from overheating and preventing external rainwater from entering the cabinet. When the push column of electric push rod M1 moves the limit plate 4 to the right rear and into position, the lower right end of the sealing plate presses against the button of power switch S2, opening the internal contacts of power switch S2. Since the other end of power switch S2 is connected to the negative power input terminal of electric push rod M1 via a wire, electric push rod M1 will lose power at this moment, preventing the electric push rod from moving the sealing plate uncontrollably to the right inner end and causing equipment damage.

[0022] Figure 1 , 2 As shown in Figure 3, when no one is standing within approximately 1.5 meters of the cabinet door, pin 3 of the pyroelectric infrared detection module T3 does not output a high level to pin 1 of the delay circuit module T4, and pin 5 of the delay circuit module T4 does not output a high level, so the alarm B will not be powered on or sound. When someone is standing within approximately 1.5 meters of the cabinet door, pin 3 of the pyroelectric infrared detection module T3 outputs a high level to pin 1 of the delay circuit module T4, energizing the delay circuit module T4. Initially, during the short period (adjustable, e.g., 60 seconds; normally, a passerby's time in front of the cabinet will not exceed one minute), pin 5 of the delay circuit module T4 does not output a high level before the set time is reached. After one minute, pin 5 of the delay circuit module T4 outputs a high level to the power input of the alarm B, energizing the alarm B and alerting anyone standing in front of the cabinet, thus preventing unauthorized personnel from damaging the cabinet door and stealing electrical components inside. When personnel leave the detection range of the pyroelectric infrared detection module T3 (i.e., leave the enclosure without causing damage), the module's pin 3 will not output a high level because it will not detect human signals. Consequently, pin 5 of the delay circuit module T4 will also stop outputting a high level, and the alarm B will no longer be powered on. Through this, the present invention can automatically open the sealing plate via an electric push rod and actively dissipate heat through a high-pressure suction fan when the temperature inside the enclosure is too high, improving the heat dissipation efficiency. Furthermore, if someone approaches the enclosure door for a certain period of time, the alarm circuit can promptly trigger an alarm to deter them, reducing the likelihood of overheating and malfunction of electrical equipment inside the enclosure, as well as the probability of damage or theft.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.

[0024] Furthermore, it should be understood that although this specification describes the embodiments, the embodiments do not necessarily contain only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A European-style transformer substation with active heat dissipation and anti-theft functions, comprising a European-style transformer substation body, a rain sensor, and a solenoid valve, characterized in that, It also features an active heat dissipation mechanism, a temperature detection and control circuit, and an alarm circuit. The active heat dissipation mechanism includes a fan, an electric push rod, a fixing frame, a sealing plate, and a power switch. One side of the European-style prefabricated transformer body has a guide hole. One end of the fixing frame is fixedly installed inside the box at the location of the heat dissipation hole, and the other end of the fixing frame has a mounting hole. The outer side of the electric push rod's cylinder is fixedly installed inside the mounting hole. One side of the sealing plate is fixedly installed on one side of the movable column of the electric push rod and located at the outer end of the box body. A heat dissipation hole is located below the guide hole in the box body. The fan is fixedly installed inside the box body, and the upper end of the fan's outlet pipe is fixedly installed in the heat dissipation hole. Inside; a limit plate is fixedly installed in the middle of the movable column of the electric push rod; there are at least two power switches, which are respectively fixedly installed on both sides of one end of the guide hole; an air inlet pipe is fixedly installed on the other side of the box, and the outer end of the air inlet pipe is connected to one end of the solenoid valve; the rain sensor, temperature detection and control circuit, and alarm circuit are installed in the component box, which is fixedly installed on the upper front of the box; the multi-channel power output terminal of the temperature detection and control circuit is electrically connected to the respective power input terminals of the electric push rod, solenoid valve, and fan; the signal output terminal of the rain sensor is electrically connected to the signal input terminal of the temperature detection and control circuit.

2. The European-style prefabricated transformer with active heat dissipation and anti-theft functions according to claim 1, characterized in that, The inner diameter of the guide hole is larger than the outer diameter of the movable column of the electric push rod; the outer diameter of the limit plate is larger than the outer diameter of the guide hole and the height of the limit plate is larger than the height of the power switch.

3. A European-style prefabricated transformer with active heat dissipation and anti-theft functions as described in claim 1, characterized in that, The solenoid valve is a normally closed solenoid valve with a spool.

4. A European-style prefabricated transformer with active heat dissipation and anti-theft functions as described in claim 1, characterized in that, The power switch is a push-button type micro switch with normally closed contacts.

5. A European-style prefabricated transformer with active heat dissipation and anti-theft functions as described in claim 1, characterized in that, A sealing gasket is fixedly installed on one side of the sealing plate.

6. A European-style prefabricated transformer with active heat dissipation and anti-theft functions as described in claim 1, characterized in that, The temperature detection and control circuit includes an electrically connected relay and a temperature switch. One end of the temperature switch is connected to the positive power input terminal of the first relay. The control power input terminal of the first relay is connected to the positive control power input terminal of the third relay. The normally open contact of the first relay is connected to the positive power input terminals of the second and third relays. The negative power input terminal of the first relay is connected to the negative power input terminals of the second and third relays and the negative control power input terminal. One normally closed contact and one normally open contact of the third relay are respectively connected to one end of each of the two power switches.

7. A European-style prefabricated transformer with active heat dissipation and anti-theft functions as described in claim 1, characterized in that, The alarm circuit includes an electrically connected pyroelectric infrared detection module, an alarm, and a delay circuit module. The positive power input terminal of the pyroelectric infrared detection module is connected to the positive control power input terminal of the delay circuit module. The negative power input terminal and negative control power input terminal of the delay circuit module are connected to the negative power input terminal of the pyroelectric infrared detection module and the negative power input terminal of the alarm. The positive power input terminal of the alarm is connected to the power output terminal of the delay circuit module. The positive power output terminal of the pyroelectric infrared detection module is connected to the positive power input terminal of the delay circuit module.

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