Box door sealing structure and closed photovoltaic power equipment box

Abstract

The utility model relates to a box door sealing structure and a closed photovoltaic power equipment box, an outer sealing strip and an inner sealing strip are utilized to enable a box door to be closed on a door frame to form an annular air cavity, and then a negative pressure pump is utilized to exhaust air from the annular air cavity to enable the annular air cavity to form a negative pressure state. Therefore, adsorption force is formed on each part where the box door is connected with the circulator cavity, so that the periphery of the box door tightly abuts against the outer sealing strip and the inner sealing strip, sealing connection between the box door and the door frame is ensured, and the problems that the box door and the sealing strips are not firmly abutted due to the fact that the position, away from the door lock, of the box door lacks enough pressure, and gaps are prone to being generated are solved. And dust or water vapor invasion is caused. The closed photovoltaic power equipment box adopting the box door sealing structure has good sealing performance and can adapt to various extreme environments such as humid and dusty environments.

Description

Technical Field

[0001] This utility model belongs to the field of energy storage container technology, specifically relating to the door sealing structure and enclosed photovoltaic power equipment box. Background Technology

[0002] Photovoltaic power equipment boxes are usually installed in harsh environments, such as deserts or oceans with long hours of sunshine. Due to the harsh environment, and the fact that the electrical equipment and battery packs inside the photovoltaic equipment box need a clean and dry working environment, the sealing performance of the box door is required to prevent dust or moisture from entering the box and causing electrical equipment malfunctions.

[0003] Conventional cabinet doors are sealed only with a sealing strip. Because the cabinet door area is relatively large, and the lock only locks one or two positions, the cabinet door far from the lock will deform due to lack of pressure. This results in the cabinet door not being firmly connected to the sealing strip, which can easily create gaps and allow dust or moisture to enter. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a door sealing structure that solves the problem that the door and the sealing strip are not firmly connected due to insufficient pressure at the position of the door far from the lock, which easily creates gaps and causes dust or moisture to enter.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a door sealing structure, including a door frame and a door, one side of the door is hinged to the door frame, and the other side is locked to the door frame. The door frame is provided with an outer sealing strip and an inner sealing strip. The outer sealing strip and the inner sealing strip are both connected end to end around the opening of the door frame. When the door is closed on the door frame, it is in contact with the outer sealing strip and the inner sealing strip respectively. The door frame, the outer sealing strip, the inner sealing strip and the door together form an annular air cavity. A negative pressure pump is provided inside the door frame. The negative pressure pump is connected to the annular air cavity and is used to evacuate air from the annular air cavity when the door is locked to the door frame.

[0006] As a preferred embodiment, both the outer sealing strip and the inner sealing strip are disposed on the surface of the door frame facing the door.

[0007] As a preferred embodiment, the door is equipped with a lock and the door frame is equipped with a micro switch. When the door is locked to the door frame, the lock tongue contacts the micro switch to close it. The micro switch is connected to the negative pressure pump.

[0008] As a preferred embodiment, an electronic air valve is provided on the door frame. The electronic air valve is connected to the annular air chamber and is also connected to a micro switch and controlled by the micro switch. When the lock tongue separates from the micro switch, causing the micro switch to disconnect, the micro switch controls the electronic air valve to open.

[0009] As a preferred embodiment, the micro switch is connected to the negative pressure pump via a controller. The micro switch sends an opening / closing signal to the controller, which then controls the negative pressure pump to operate based on the signal. A barometer is also connected to the door frame and inserted into the annular air chamber. The barometer is connected to the controller and is used to detect the air pressure inside the annular air chamber. The controller combines the opening / closing signal sent by the micro switch and the pressure signal detected by the barometer to control the negative pressure pump to operate or stop.

[0010] The technical problem to be solved by this utility model is to provide a closed photovoltaic power equipment box, which solves the problem that the box door is not firmly connected to the sealing strip due to insufficient pressure at the position of the box door far from the door lock, which easily produces gaps and causes dust or water vapor to enter.

[0011] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a closed photovoltaic power equipment box, including a box body, a number of door frames opened on the box body, and a box door that is hinged to the door frame one by one. The box door is connected to the door frame through the above-mentioned box door sealing structure.

[0012] The beneficial effects of this utility model are as follows: This utility model utilizes an outer sealing strip and an inner sealing strip to form an annular air cavity when the door is closed on the door frame. Then, a negative pressure pump is used to evacuate the annular air cavity, creating a negative pressure state. This generates an adsorption force on the various parts where the door connects to the annular air cavity, ensuring that the door is tightly pressed against the outer and inner sealing strips all around, guaranteeing a sealed connection between the door and the door frame. This solves the technical problem of insufficient pressure at locations far from the lock, leading to weak contact between the door and the sealing strip, easily creating gaps, and allowing dust or moisture to intrude. The enclosed photovoltaic power equipment box using this door sealing structure has excellent sealing performance and can adapt to various extreme environments such as humidity and dust. Attached Figure Description

[0013] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0014] Figure 1 This is a cross-sectional view of the door sealing structure described in this utility model;

[0015] Figure 2 yes Figure 1 The diagram shows the open state of the door sealing structure.

[0016] Figure 3 This is a perspective view of the enclosed photovoltaic power equipment box described in this utility model;

[0017] Figures 1-3Components: 1. Door frame; 2. Box door; 3. Outer sealing strip; 4. Inner sealing strip; 5. Annular air chamber; 6. Negative pressure pump; 7. Lock; 701. Lock tongue; 8. Micro switch; 9. Electronic air valve; 10. Controller; 11. Barometer; 12. Box body. Detailed Implementation

[0018] The specific implementation scheme of this utility model will now be described in detail with reference to the accompanying drawings.

[0019] like Figure 1 and Figure 2 The box door sealing structure shown includes a door frame 1 and a box door 2. The left side of the box door 2 is hinged to the door frame 1, and the right side is locked to the door frame 1. The door frame 1 is provided with an outer sealing strip 3 and an inner sealing strip 4. Both the outer sealing strip 3 and the inner sealing strip 4 are arranged around the opening of the door frame 1 and are connected end to end to form a ring. When the box door 2 is closed on the door frame 1, it is in contact with the outer sealing strip 3 and the inner sealing strip 4 respectively. The door frame 1, the outer sealing strip 3, the inner sealing strip 4 and the box door 2 together form an annular air cavity 5 around the edge of the box door 2. A negative pressure pump 6 is provided inside the door frame 1. The negative pressure pump 6 is connected to the annular air cavity 5 and is used to evacuate air from the annular air cavity 5 when the box door 2 is locked to the door frame 1.

[0020] After the door 2 is locked to the door frame 1, the negative pressure pump 6 can be started by the user or automatically to draw air from the annular air chamber 5, causing the air pressure inside the annular air chamber 5 to drop. Under the pressure of the external high pressure, the edges of the door 2 are tightly attached to the outer sealing strip 3 and the inner sealing strip 4, and maintain a good sealing state.

[0021] In this embodiment, the outer sealing strip 3 and the inner sealing strip 4 are preferably both disposed on the surface of the door frame 1 facing the door 2. This way, when the door 2 is subjected to negative pressure adsorption, both the outer sealing strip 3 and the inner sealing strip 4 can be effectively squeezed, ensuring that the door 2 and the door frame 1 are reliably sealed.

[0022] In this embodiment, a lock 7 is provided on the door 2. In order to improve automation, a micro switch 8 is preferably provided on the door frame 1. When the door 2 is locked to the door frame 1, the lock tongue 701 of the lock 7 contacts the micro switch 8 to close the micro switch 8. The micro switch 8 is connected to the negative pressure pump 6.

[0023] In this embodiment, an electronic air valve 9 is also provided on the door frame 1. The electronic air valve 9 is connected to the annular air chamber 5 and is also connected to the micro switch 8. It is controlled by the micro switch 8. When the lock tongue 701 separates from the micro switch 8 and the micro switch 8 is disconnected, the micro switch 8 controls the electronic air valve 9 to open, so that the annular air chamber 5 is connected to the outside and the normal air pressure in the annular air chamber 5 is restored, so that the user can open the box door 2 normally.

[0024] To reduce energy consumption and avoid energy waste, the micro switch 8 described in this embodiment is connected to the negative pressure pump 6 through a controller 10. The micro switch 8 sends an opening and closing signal to the controller 10, and the controller 10 controls the negative pressure pump 6 to work according to the signal. A barometer 11 is also connected to the door frame 1. The barometer 11 is inserted into the annular air chamber 5. The barometer 11 is connected to the controller 10 and is used to detect the air pressure in the annular air chamber 5. The controller 10 controls the negative pressure pump 6 to work or stop by combining the opening and closing signal sent by the micro switch 8 and the pressure signal detected by the barometer 11.

[0025] The barometer 11 can detect the air pressure value in the annular air chamber 5. When the air pressure value meets the requirements, the controller 10 can control the negative pressure pump 6 to stop working. When the micro switch 8 is in the closed state and the air pressure value in the annular air chamber 5 is higher than the set value, the controller 10 controls the negative pressure pump 6 to work.

[0026] In practical applications, the electronic air valve 9 can also be connected to the controller 10 and controlled by the controller 10.

[0027] like Figure 3 The diagram shows a closed photovoltaic power equipment box, including a box body 12, several door frames 1 opened on the box body 12, and box doors 2 that are hinged to the door frames 1 one by one. The box doors 2 are connected to the door frames 1 through the aforementioned box door sealing structure.

[0028] The working process of this utility model is as follows: Figures 1-3 As shown, when the user closes the door 2 and then locks the lock 7, the latch 701 abuts against the microswitch 8, causing the microswitch to close. The closed microswitch sends a signal to the controller 10 indicating closure. Upon receiving the signal, the controller 10 controls the negative pressure pump 6 to start, evacuating the annular air chamber 5. Simultaneously, the barometer 11 detects the air pressure in the annular air chamber 5. When the air pressure in the annular air chamber 5 drops to the target value, the controller 10 controls the negative pressure pump 6 to stop. When the air pressure in the annular air chamber 5 rises above the target value, and the microswitch remains closed, the controller 10 restarts the negative pressure pump 6 to evacuate air.

[0029] The negative pressure pump 6 draws air to put the annular air chamber 5 into a low-pressure or negative-pressure state. Under the action of the external atmospheric pressure, the four edges of the box door 2 are tightly pressed against the door frame 1 and closely connected with the outer sealing strip 3 and the inner sealing strip 4, ensuring that the box door 2 and the door frame 1 are sealed together and preventing external dust or moisture from entering the box body 12.

[0030] When the user needs to open the cabinet door 2, the user first removes the control latch 701 from the door frame 1. The micro switch 8 is released from the contact of the latch 701 and resets and disconnects. The electronic air valve 9 opens to connect the outside world with the annular air chamber 5. The air pressure in the annular air chamber 5 rises rapidly and returns to normal. The user can then pull the cabinet door 2 to open the cabinet door.

[0031] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some examples of its application, and are not intended to limit the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention.

Claims

1. A door sealing structure, comprising a door frame (1) and a door (2), wherein one side of the door (2) is hinged to the door frame (1) and the other side is locked to the door frame (1), characterized in that, The door frame (1) is provided with an outer sealing strip (3) and an inner sealing strip (4). The outer sealing strip (3) and the inner sealing strip (4) are both connected around the opening of the door frame (1) and are connected end to end. When the box door (2) is closed on the door frame (1), it is in contact with the outer sealing strip (3) and the inner sealing strip (4) respectively. The door frame (1), the outer sealing strip (3), the inner sealing strip (4) and the box door (2) together form an annular air cavity (5). A negative pressure pump (6) is provided on the inner side of the door frame (1). The negative pressure pump (6) is connected to the annular air cavity (5) and is used to draw air from the annular air cavity (5) when the box door (2) is locked to the door frame (1).

2. The door sealing structure according to claim 1, characterized in that, Both the outer sealing strip (3) and the inner sealing strip (4) are set on the surface of the door frame (1) facing the box door (2).

3. The door sealing structure according to claim 2, characterized in that, The door (2) is equipped with a lock (7), and the door frame (1) is equipped with a micro switch (8). When the door (2) is locked to the door frame (1), the lock tongue (701) of the lock (7) contacts the micro switch (8) to close the micro switch (8). The micro switch (8) is connected to the negative pressure pump (6).

4. The door sealing structure according to claim 3, characterized in that, An electronic air valve (9) is provided on the door frame (1). The electronic air valve (9) is connected to the annular air chamber (5). The electronic air valve (9) is also connected to the micro switch (8) and is controlled by the micro switch (8). When the lock tongue (701) separates from the micro switch (8) and the micro switch (8) is disconnected, the micro switch (8) controls the electronic air valve (9) to open.

5. The door sealing structure according to claim 3, characterized in that, The micro switch (8) is connected to the negative pressure pump (6) through a controller (10). The micro switch (8) sends an opening and closing signal to the controller (10). The controller (10) controls the negative pressure pump (6) to work according to the signal. A barometer (11) is also connected to the door frame (1). The barometer (11) is inserted into the annular air chamber (5). The barometer (11) is connected to the controller (10) and is used to detect the air pressure in the annular air chamber (5). The controller (10) controls the negative pressure pump (6) to work or stop by combining the opening and closing signal sent by the micro switch (8) and the pressure signal detected by the barometer (11).

6. A closed photovoltaic power equipment box, comprising a box body (12), a plurality of door frames (1) opened on the box body (12), and box doors (2) hinged to the door frames (1) in a corresponding manner, characterized in that, The box door (2) is connected to the door frame (1) through any of the box door sealing structures described in claims 1 to 5.

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