Protection device for inverter

Abstract

The utility model relates to the technical field of inverters, and discloses a protection device for an inverter, which comprises a main body mechanism and a protection mechanism, the protection mechanism is located at the left side of the main body mechanism, the main body mechanism comprises a protection shell, an inverter body and a support frame, the inverter body is located in the protection shell, and the support frame is located in the protection shell. The supporting frame is fixedly installed at the rear end of the interior of the protection shell, the main body mechanism further comprises an electric motor, a lead screw, a nut and a cooling fan, and the electric motor is fixedly installed at the upper end of the inner end of the supporting frame. According to the protection device for the inverter, by installing the main body mechanism, a good heat dissipation effect is provided for the inverter body when the protection shell carries out protection operation on the inverter body, heat dissipation of the inverter body is more uniform and thorough through the design of a lead screw and a nut, the situation that the inverter body is damaged due to heat accumulation is avoided, and the service life of the inverter body is prolonged. Therefore, the protection performance of the protection housing is improved, and the service life of the inverter body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of inverters, in particular to a protection device for inverters. Background Art

[0002] An inverter is an electric power regulating device composed of semiconductor devices, which is mainly used to convert DC power into AC power. The boost circuit boosts the DC voltage of the solar module to the DC voltage required for the inverter output control; the inverter bridge circuit converts the boosted DC voltage into an AC voltage of a common frequency. During the operation of the inverter, a protective device is usually required to protect it.

[0003] The existing patent document of technical disclosure number CN215267627U provides a protection device for a PCS energy storage inverter with a high-temperature circuit breaker structure. The utility model sets a support monitoring mechanism. The device achieves the effect of automatically cutting off the power at high temperature and protecting the internal components of the device through the cooperation between the box, the support plate, the inverter body, the electronic switch, the connecting wire, the temperature sensor, the alarm light and the single-chip computer. It solves the problem that the protection device of the existing PCS energy storage inverter will generate high temperature when the inverter works for a long time, making the inverter easily damaged and the protection effect worse.

[0004] However, the existing inverter protection device is not convenient to provide a good heat dissipation effect for the inverter when in use, and the high-temperature power-off protection structure directly affects the normal use of the inverter, causing inconvenience to people's use, and has poor practicality and protection. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] The utility model aims to provide a protection device for an inverter, so as to solve the problem that the existing protection device for an inverter mentioned in the background art is not convenient for providing a good heat dissipation effect for the inverter when in use.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a protective device for an inverter, comprising a main body mechanism and a protective mechanism, wherein the protective mechanism is located on the left side of the main body mechanism, the main body mechanism comprises a protective housing, an inverter body and a support frame, the inverter body is located inside the protective housing, and the support frame is fixedly installed at the rear end inside the protective housing;

[0009] The main body mechanism also includes an electric motor, a screw rod, a nut and a cooling fan. The electric motor is fixedly mounted on the upper end of the inner end of the support frame, the screw rod is fixedly mounted on the transmission end of the lower end of the electric motor, the nut is threadedly connected to the outer end of the screw rod, and the cooling fan is fixedly mounted on the front end of the nut.

[0010] Preferably, the protection mechanism includes a control terminal, a temperature sensor and an alarm. The control terminal is fixedly installed at the left end of the protective shell, the temperature sensor is fixedly installed at the right end inside the protective shell, the temperature sensor is electrically connected to the control terminal, the alarm is fixedly installed at the upper end of the protective shell, and the alarm is electrically connected to the control terminal. The design of the temperature sensor facilitates real-time monitoring of the internal temperature of the protective shell, and the design of the alarm serves to remind the staff.

[0011] Preferably, the protection mechanism also includes a processing box and an air intake pipe. The processing box is fixedly installed on the left end of the protection shell, and the air intake pipe is fixedly installed on the left end of the processing box. The design of the processing box facilitates the adsorption of moisture in the input gas, and the air intake pipe is a one-way pipe.

[0012] Preferably, the protection mechanism also includes a delivery pipe and an exhaust pipe. The delivery pipe is fixedly installed at the right end of the processing box, and the exhaust pipe is fixedly installed at the upper end of the protection shell. The design of the delivery pipe facilitates the delivery of the gas inside the processing box to the inside of the protection shell. The delivery pipe and the exhaust pipe are both one-way pipes.

[0013] Preferably, the protection mechanism also includes a supporting mesh plate and absorbent cotton, the supporting mesh plate is fixedly installed inside the processing box, and the absorbent cotton is fixedly installed on the upper end of the supporting mesh plate, and the design of the supporting mesh plate provides a supporting effect for the absorbent cotton.

[0014] Preferably, the protective mechanism also includes a hydraulic cylinder body, an extrusion plate and a drain pipe. The hydraulic cylinder body is fixedly installed on the upper end of the processing box, the extrusion plate is fixedly installed on the transmission end of the lower end of the hydraulic cylinder body, and the drain pipe is fixedly installed on the lower end of the left end of the processing box. The design of the hydraulic cylinder body can push the extrusion plate to fully contact the absorbent cotton to squeeze out the water. The hydraulic cylinder body includes a hydraulic cylinder and a movable rod.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The inverter protection device, by installing the main body mechanism, realizes that the protective shell provides a good heat dissipation effect for the inverter body when performing the protection operation. The design of the screw rod and the nut makes the inverter body dissipate heat more evenly and thoroughly, avoiding the situation where the inverter body is damaged due to heat accumulation, improving the protection of the protective shell, and extending the service life of the inverter body;

[0017] 2. The inverter protection device is installed with a protection mechanism, so that the protection shell can absorb moisture in the input gas when in use, so as to avoid the inverter body being damaged due to excessive moisture in the incoming gas. The design of the hydraulic cylinder can squeeze out the water-absorbing cotton when it is saturated with water vapor, so as to ensure the normal operation of moisture absorption, and further improve the protection of the protection shell;

[0018] 3. The inverter protection device is equipped with a temperature sensor and an alarm. When the protective shell is in use, the temperature sensor is designed to monitor the operating temperature of the inverter body in real time, and can issue an alarm to serve as a reminder when the temperature is too high, which is convenient for the staff to inspect and maintain the inverter body, thereby improving the automation of the protective shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the main mechanism of the utility model;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the processing box of the utility model;

[0022] Figure 4 It is a schematic diagram of the enlarged structure of the local details of the heat dissipation fan of the utility model.

[0023] In the figure: 1. Main body; 101. Protective shell; 102. Inverter body; 103. Support frame; 104. Electric motor; 105. Screw rod; 106. Nut; 107. Cooling fan; 2. Protection mechanism; 201. Control terminal; 202. Temperature sensor; 203. Alarm; 204. Processing box; 205. Inlet pipe; 206. Delivery pipe; 207. Exhaust pipe; 208. Support mesh plate; 209. Water-absorbing cotton; 210. Hydraulic cylinder; 211. Extrusion plate; 212. Drain pipe. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 - Figure 4The utility model provides a technical solution: a protective device for an inverter, comprising a main body mechanism 1 and a protective mechanism 2, the protective mechanism 2 is located on the left side of the main body mechanism 1, the main body mechanism 1 comprises a protective shell 101, an inverter body 102 and a support frame 103, the inverter body 102 is located inside the protective shell 101, and the support frame 103 is fixedly installed at the rear end inside the protective shell 101;

[0026] The main mechanism 1 also includes an electric motor 104, a screw rod 105, a nut 106 and a heat dissipation fan 107. The electric motor 104 is fixedly mounted on the upper end of the inner end of the support frame 103, the screw rod 105 is fixedly mounted on the transmission end of the lower end of the electric motor 104, the nut 106 is threadedly connected to the outer end of the screw rod 105, and the heat dissipation fan 107 is fixedly mounted on the front end of the nut 106. When the protective shell 101 is used to protect the inverter body 102, the inverter body 102 will generate a certain amount of heat during operation. The heat dissipation fan 107 promotes the air circulation inside the protective shell 101, so that the external gas enters the protective shell 101 through the air inlet pipe 205 and the delivery pipe 206, and the heat is dissipated through the exhaust pipe 207. At the same time, the electric motor 104 drives the nut 106 to move on the screw rod 105, and the nut 106 drives the heat dissipation fan 107 to move up and down, so as to evenly dissipate the heat of the inverter body 102, avoid the short circuit caused by heat accumulation, and accelerate the heat dissipation through the exhaust pipe 207.

[0027] The protection mechanism 2 includes a control terminal 201, a temperature sensor 202 and an alarm 203. The control terminal 201 is fixedly mounted on the left end of the protection housing 101, the temperature sensor 202 is fixedly mounted on the right end inside the protection housing 101, the temperature sensor 202 is electrically connected to the control terminal 201, the alarm 203 is fixedly mounted on the upper end of the protection housing 101, and the alarm 203 is electrically connected to the control terminal 201. The protection mechanism 2 also includes a processing box 204 and an air inlet pipe 205. The processing box 204 is fixedly mounted on the left end of the protection housing 101, and the air inlet pipe 205 is fixedly mounted on the upper end of the protection housing 101. The air pipe 205 is fixedly installed at the left end of the processing box 204. The protection mechanism 2 also includes a delivery pipe 206 and an exhaust pipe 207. The delivery pipe 206 is fixedly installed at the right end of the processing box 204. The exhaust pipe 207 is fixedly installed at the upper end of the protection shell 101. The protection mechanism 2 also includes a support mesh plate 208 and absorbent cotton 209. The support mesh plate 208 is fixedly installed inside the processing box 204. The absorbent cotton 209 is fixedly installed at the upper end of the support mesh plate 208. The protection mechanism 2 also includes a hydraulic cylinder body 210, an extrusion plate 211 and a drain pipe 212. The hydraulic cylinder body 2 10 is fixedly installed at the upper end of the processing box 204, the extrusion plate 211 is fixedly installed at the transmission end of the lower end of the hydraulic cylinder body 210, and the drainage pipe 212 is fixedly installed at the lower end of the left end of the processing box 204. The temperature sensor 202 monitors the internal temperature of the protection shell 101 in real time and uploads the data to the control terminal 201. When it recognizes that the internal temperature of the protection shell 101 is too high, the alarm 203 sounds an alarm, and the control terminal 201 uploads the signal to the terminal device to remind the staff to perform maintenance work on the inverter body 102. The external gas is passed The moisture absorbed by the absorbent cotton 209 is discharged through the drain pipe 212 to ensure that the moisture absorbed by the absorbent cotton 209 is discharged normally.

[0028] Working principle: When the protective shell 101 is used to protect the inverter body 102, the inverter body 102 will generate a certain amount of heat during operation. The cooling fan 107 works to promote the air circulation inside the protective shell 101, so that the external gas enters the protective shell 101 through the air inlet pipe 205 and the delivery pipe 206, and the heat is dissipated through the exhaust pipe 207. At the same time, the electric motor 104 works to drive the nut 106 to move on the screw rod 105, and the nut 106 drives the cooling fan 107 to move up and down, so as to evenly dissipate the heat of the inverter body 102, avoid the short circuit caused by heat accumulation, and accelerate the heat dissipation through the exhaust pipe 207. The temperature sensor 202 monitors the internal temperature of the protective shell 101 in real time and uploads the data to the control terminal 201. When it recognizes When the temperature inside the protective shell 101 is too high, the alarm 203 sounds an alarm, and the control terminal 201 uploads a signal to the terminal device, reminding the staff to perform maintenance work on the inverter body 102. The outside air enters the processing box 204 through the air inlet pipe 205, and the absorbent cotton 209 absorbs the moisture in the input gas. The gas after moisture absorption enters the protective shell 101 through the delivery pipe 206. When it is necessary to process the moisture absorbed by the absorbent cotton 209, the valve of the delivery pipe 206 is closed, and the valve of the drain pipe 212 is opened. The hydraulic cylinder body 210 works to push the extrusion plate 211 to fully contact the absorbent cotton 209, squeeze out the moisture absorbed by the absorbent cotton 209, and discharge the moisture through the drain pipe 212, thereby ensuring the normal moisture absorption operation of the absorbent cotton 209.

[0029] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. A protection device for an inverter, comprising a main body mechanism (1) and a protection mechanism (2), characterized in that: The protection mechanism (2) is located on the left side of the main mechanism (1); the main mechanism (1) comprises a protection shell (101), an inverter body (102) and a support frame (103); the inverter body (102) is located inside the protection shell (101); and the support frame (103) is fixedly mounted at the rear end inside the protection shell (101); The main body mechanism (1) further comprises an electric motor (104), a screw rod (105), a nut (106) and a heat dissipation fan (107); the electric motor (104) is fixedly mounted on the upper end of the inner end of the support frame (103); the screw rod (105) is fixedly mounted on the transmission end of the lower end of the electric motor (104); the nut (106) is threadedly connected to the outer end of the screw rod (105); and the heat dissipation fan (107) is fixedly mounted on the front end of the nut (106).

2. The inverter protection device according to claim 1, characterized in that: The protection mechanism (2) comprises a control terminal (201), a temperature sensor (202) and an alarm (203); the control terminal (201) is fixedly mounted on the left end of the protection shell (101); the temperature sensor (202) is fixedly mounted on the right end inside the protection shell (101); the temperature sensor (202) is electrically connected to the control terminal (201); the alarm (203) is fixedly mounted on the upper end of the protection shell (101); and the alarm (203) is electrically connected to the control terminal (201).

3. The inverter protection device according to claim 2, characterized in that: The protection mechanism (2) further comprises a processing box (204) and an air intake pipe (205); the processing box (204) is fixedly mounted on the left end of the protection shell (101); and the air intake pipe (205) is fixedly mounted on the left end of the processing box (204).

4. The inverter protection device according to claim 3, characterized in that: The protection mechanism (2) further comprises a delivery pipe (206) and an exhaust pipe (207), wherein the delivery pipe (206) is fixedly mounted on the right end of the processing box (204), and the exhaust pipe (207) is fixedly mounted on the upper end of the protection shell (101).

5. The inverter protection device according to claim 4, characterized in that: The protection mechanism (2) further comprises a supporting mesh plate (208) and water-absorbing cotton (209); the supporting mesh plate (208) is fixedly mounted inside the processing box (204); and the water-absorbing cotton (209) is fixedly mounted on the upper end of the supporting mesh plate (208).

6. The inverter protection device according to claim 5, characterized in that: The protection mechanism (2) further comprises a hydraulic cylinder body (210), an extrusion plate (211) and a drainage pipe (212); the hydraulic cylinder body (210) is fixedly mounted on the upper end of the processing box (204); the extrusion plate (211) is fixedly mounted on the transmission end of the lower end of the hydraulic cylinder body (210); and the drainage pipe (212) is fixedly mounted on the lower end of the left end of the processing box (204).

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