An explosion-proof distribution cabinet

Abstract

The present invention discloses an explosion-proof power distribution cabinet, comprising a base, a buffer cavity is provided on the base, a cabinet is connected to the base, the cabinet is connected to the buffer cavity, a protective shell is connected to the lower inner side of the cabinet, a ventilation component is connected inside the protective shell, an opening is provided on the upper side of the protective shell to connect to the interior of the cabinet, a blocking piece is slidably connected inside the protective shell, and the blocking piece is used to block the opening of the protective shell. Advantages of the present invention: when an explosion occurs, the device can not only guide the explosion gas into the ground to prevent the explosion gas from causing further damage to the internal electrical components, but also when an explosion occurs, the protective shell is blocked by the blocking piece to protect the ventilation component in the protective shell, and the explosion gas can be prevented from spraying out from the heat dissipation hole, thereby protecting the external equipment and personnel from being injured.

Description

Technical Field

[0001] The invention relates to the technical field of explosion-proof equipment, and in particular to an explosion-proof power distribution cabinet. Background Art

[0002] When an explosion occurs inside a traditional explosion-proof distribution cabinet, the internal explosion gas will spray out through the heat dissipation holes, damaging the fan while also causing harm to external equipment and personnel. However, if heat dissipation holes are not set, the heat generated by the internal electrical components cannot be dissipated, which will burn the electrical components or even cause fire, posing a safety hazard. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an explosion-proof distribution cabinet.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an explosion-proof distribution cabinet, characterized in that: it includes a base, a buffer cavity is provided on the base, a cabinet is connected to the base, the cabinet is connected to the buffer cavity, a protective shell is connected at the lower inner side of the cabinet, a ventilation component is connected inside the protective shell, an opening is provided on the upper side of the protective shell to connect to the interior of the cabinet, a sealing piece is slidably connected inside the protective shell, and the sealing piece is used to seal the opening of the protective shell.

[0005] Preferably, two stepped holes are provided on the base, and two connecting pipes are connected to the bottom of the cabinet. The upper ends of the connecting pipes are connected to the interior of the cabinet, and the connecting pipes are inserted into the stepped holes.

[0006] Preferably, a shunt pipe is connected in the base, the shunt pipe is connected to the two stepped holes, the shunt pipe is connected to the cabinet through a delivery pipe, and a solenoid valve is installed on the delivery pipe.

[0007] Preferably, elastic pistons are provided at both ends of the shunt pipe to seal the pipe openings.

[0008] Preferably, the ventilation assembly includes an exhaust fan and an intake fan

[0009] Preferably, an elastic barrier is connected inside the protective shell, which divides the interior of the protective shell into an exhaust chamber and an air intake chamber. The exhaust fan is connected inside the exhaust chamber, and the air intake fan is connected inside the air intake chamber. Heat dissipation holes are provided at the bottoms of the exhaust chamber and the air intake chamber.

[0010] Preferably, a clamping member is connected inside the protective shell, and the clamping member includes a sliding rod, the sliding rod is slidably connected to the protective shell, the clamping block is connected to the sliding rod, and the elastic member is connected to the sliding rod.

[0011] The advantages of the present invention are as follows: the explosion-proof distribution cabinet provided by the present invention can not only guide the explosion gas into the ground when an explosion occurs, so as to prevent the explosion gas from causing further damage to the internal electrical components, but also seal the protective shell through the sealing member when an explosion occurs, thereby protecting the ventilation components in the protective shell, and preventing the explosion gas from spraying out from the heat dissipation holes, thereby protecting the external equipment and personnel and preventing them from being injured. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the principle structure of an explosion-proof power distribution cabinet provided by the present invention;

[0013] Figure 2 It is the usage status diagram of this device;

[0014] Figure 3 yes Figure 1 A magnified schematic diagram of part A;

[0015] Figure 4 yes Figure 1 A magnified schematic diagram of part B;

[0016] Figure 5 It is a schematic diagram of the structure of the elastic barrier. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0019] like Figure 1 As shown, an explosion-proof distribution cabinet provided by the present invention includes a base 1, the base 1 is a cement floor, a buffer cavity 2 is provided on the base 1, and some buffer materials, such as sand and soil, are placed in the buffer cavity 2 to buffer the explosion gas.

[0020] Two stepped holes 1.1 are provided on the base 1 to connect the buffer cavity 2. A cabinet 3 is placed on the base 1. Connecting pipes 3.1 are welded on both sides of the bottom of the cabinet 3. The upper ends of the connecting pipes 3.1 are connected to the interior of the cabinet 3. The connecting pipes 3.1 are inserted into the corresponding stepped holes 1.1. The cabinet 3 is connected to the buffer cavity 2 through the connecting pipes 3.1. A flange 3.3 is welded on each connecting pipe 3.1. A through hole is provided on the flange 3.3. A threaded blind hole corresponding to the through hole is provided on the base 1. Bolts for threaded connection of the threaded blind hole are passed through the through hole. The connecting pipe 3.1 is connected to the base 1 by the bolts. When an explosion occurs in the cabinet 3, the explosion gas can be introduced into the buffer cavity 2 in the base 1 through the connecting pipe 3.1.

[0021] A circular cavity is provided between the two stepped holes 1.1 in the base 1, and a shunt pipe 1.2 is connected in the circular cavity. The shunt pipe 1.2 communicates with the two stepped holes 1.1, and the explosion gas is shunted by the shunt pipe 1.2. The fire extinguishing gas is stored in the shunt pipe 1.2. The shunt pipe 1.2 is connected to the interior of the cabinet 3 through the delivery pipe 9. While the explosion gas is shunted, the fire extinguishing gas is pressed into the cabinet 3 for fire extinguishing. An electromagnetic valve 9.1 is installed on the delivery pipe 9, and the switch closing of the delivery pipe 9 is controlled by the electromagnetic valve 9.1.

[0022] At the two end openings of the shunt tube 1.2, elastic piston members 1.3 are provided for blocking the tube openings. The elastic piston members 1.3 are used to block the two end openings of the shunt tube 1.2. The elastic piston members 1.3 include piston plates 1.4. The piston plates 1.4 perform piston motion in the storage tube 1.2. An annular plate 1.5 is provided on one side of each piston plate 1.4. The annular plate 1.5 is connected to the shunt tube 1.2. A fixing rod 1.6 is inserted in the annular plate 1.5. One end of the fixing rod 1.6 is connected to the piston plate 1.4. .4, and the other end is connected to a push plate 1.7, which is arranged at the pipe mouth of the shunt pipe 1.2. When an explosion occurs in the cabinet 3, the explosion gas enters the stepped hole 1.1 through the connecting pipe 3.1, and then most of it enters the buffer cavity 2, and a small part enters the shunt pipe 1.2. The two push plates 1.7 are pushed by the explosion gas, and the two push plates 1.7 push the piston plates 1.4 respectively. The two piston plates 1.4 squeeze the fire-extinguishing gas toward the middle, and the fire-extinguishing gas is transported to the inner cabinet 3 through the delivery pipe 9.

[0023] In order to allow as much explosion gas as possible to enter the diversion pipe 1.2, a guide plate 1.8 is connected in the stepped hole 1.1. The guide plate 1.8 is a triangular plate with the inclined surface facing the pipe mouth of the diversion pipe 1.2. When the explosion gas flows downward, it can enter the diversion pipe 1.2 under the guidance of the guide plate 1.8.

[0024] An installation shell 7 is welded on the upper inner side of the cabinet 3, and electrical components are installed in the installation shell 7. The installation shell 7 is a box body with an open bottom. The pipe mouth of the delivery pipe 9 is arranged below the opening of the installation shell 7 to facilitate the fire extinguishing gas to enter the installation shell 7.

[0025] A U-shaped ventilation cavity is formed between the mounting shell 7 and the inner wall of the cabinet 3 , and gas flows in the U-shaped ventilation cavity to take away the heat emitted from the surface of the mounting shell 7 , thereby dissipating the heat of the electronic components in the mounting shell 7 .

[0026] A protective shell 4 is connected to the inner bottom of the cabinet 3. The protective shell 4 is a cylinder that passes through from top to bottom. A ventilation component 5 is connected inside the protective shell 4. The ventilation component 5 includes an exhaust fan 5.2 and an intake fan 5.1. Air is transported into the cabinet 3 through the intake fan 5.1, then passes through the U-shaped ventilation cavity, and is finally discharged through the exhaust fan 5.2, so that the electrical components in the distribution cabinet can dissipate heat better.

[0027] An elastic barrier 4.1 is arranged in the protective shell 4, and the elastic barrier 4.1 divides the interior of the protective shell 4 into an exhaust chamber 4.2 and an air intake chamber 4.3. The bottoms of the exhaust chamber 4.2 and the air intake chamber 4.3 are both provided with heat dissipation holes. The exhaust fan 5.2 is connected to the exhaust chamber 4.2 through a bracket, and the air intake fan 5.1 is connected to the air intake chamber 4.3 through a bracket.

[0028] Two filter screens 3.2 are fixed to the bottom of the cabinet 3 by bolts. The two filter screens 3.2 are respectively covered under the exhaust cavity 4.2 and the intake cavity 4.3 to prevent external dust from entering the interior of the cabinet 3.

[0029] The elastic barrier 4.1 includes a partition 4.2, on which a sliding groove is provided, the sliding groove is vertically arranged, and is slidably connected to a support plate 4.3 in the sliding groove, a group of first springs 4.4 are connected between the support plate 4.3 and the bottom of the sliding groove, and a blocking member 6 is connected to the upper side of the support plate 4.3, the blocking member 6 is a piston plate, the cross-section of the piston plate is an isosceles trapezoid, and two inclined surfaces are arranged downward, the blocking member 6 can slide up and down in the mounting shell 7 and the protective shell 4, and can block the upper side opening of the protective shell 4, in a normal state, the blocking member 6 is in the mounting shell 7, blocking the lower opening of the mounting shell 7, at this time, the air intake fan 5.1 can transport air into the cabinet 3 and dissipate heat for the electrical components, but when the electrical components in the mounting shell 7 explode, the explosion gas will drive the blocking member 6 to move downward, so that the blocking member 6 blocks the upper opening of the protective shell 4, which can not only protect the ventilation component 5, but also prevent the explosion gas from spraying out from the heat dissipation hole to cause damage to external equipment and personnel.

[0030] like Figure 2As shown, a clamping member 8 is connected to the inner opening of the protective shell 4, and the clamping member 8 clamps the blocking member 6. In this embodiment, the number of the clamping members 8 is two, and they are arranged relatively. The clamping member 8 includes a receiving groove 8.1, and a sliding hole is provided at the bottom of the receiving groove 8.1. A sliding rod 8.2 is slidably connected in the sliding hole, and a clamping block 8.3 is connected to one end of the sliding rod 8.2. The upper side surface of the clamping block 8.3 is an inclined surface, which can be a triangular plate or a right-angled trapezoidal plate. In this embodiment, the clamping block 8.3 is a triangular plate, and the clamping block 8.3 can be stored in the receiving groove 8.1. When the blocking member 6 moves to When moving downward, it will push the clamping block 8.3 to move into the receiving groove 8.1. The other end of the sliding rod 8.2 is connected to a limit plate 8.4 to prevent the sliding rod 8.2 from disengaging from the sliding hole. The sliding rod 8.2 is connected to an elastic member 8.5, and the elastic member 8.5 is a second spring. The second spring is arranged between the clamping block 8.3 and the receiving groove 8.1. When the blocking member 6 moves downward to the bottom of the clamping block 8.3, the clamping block 8.3 pops out under the rebound of the second spring and is stuck above the blocking member 6 to prevent the blocking member 6 from moving upward, thereby causing the blocking member 6 to block the upper opening of the protective shell 4.

[0031] The provision of the blocking member 6 not only ensures normal daily ventilation of the cabinet 3, but also protects the ventilation assembly 5 in the event of an explosion, and further ensures that the explosion gas does not spray out from the heat dissipation holes.

[0032] A push switch 10 is fixed on the inner side of the cabinet 3 by bolts. The push switch 10 is arranged corresponding to one of the limit plates 8.4. When the blocking member 6 moves downward to squeeze the clamping block 8.3, the limit plate 8.4 will be driven to press the push switch 10. The solenoid valve 9.1 is connected to the push switch 10, and the solenoid valve 9.1 controls the opening and closing of the delivery pipe 9.

[0033] When an explosion occurs in the cabinet 3, the blocking member 6 moves downward under the drive of the explosion gas, blocks the opening of the protective shell 4, protects the ventilation assembly 5, and prevents the explosion gas from spraying out from the heat dissipation holes. In the process of the blocking member 6 moving downward, it drives the limit plate 8.4 to press the push switch 10, opens the solenoid valve 9.1, and puts the delivery pipe 9 in a flow state. The explosion gas is introduced into the buffer cavity 2 in the base 1 through the connecting pipe 3.1. In addition, the shunt pipe 1.2 provided in the base 1 shunts the explosion gas. While shunt, it drives the two piston plates 1.4 to move toward the middle in the shunt pipe 1.2, thereby squeezing the fire extinguishing gas in the shunt pipe, so that the fire extinguishing gas is delivered to the cabinet 3 through the delivery pipe 9 for extinguishing the fire.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An explosion-proof power distribution cabinet, characterized in that: It comprises a base, a buffer cavity is provided on the base, a cabinet is connected to the base, the cabinet is connected to the buffer cavity, a protective shell is connected to the lower inner side of the cabinet, a ventilation assembly is connected inside the protective shell, an opening is provided on the upper side of the protective shell to connect to the interior of the cabinet, a blocking piece is slidably connected inside the protective shell, and the blocking piece is used to block the opening of the protective shell; Two stepped holes are provided on the base, and two connecting pipes are connected to the bottom of the cabinet, the upper ends of the connecting pipes are connected to the interior of the cabinet, and the connecting pipes are inserted into the stepped holes; A shunt pipe is connected in the base, fire extinguishing gas is stored in the shunt pipe, the shunt pipe is connected to the two stepped holes, the shunt pipe is connected to the cabinet through a delivery pipe, and a solenoid valve is installed on the delivery pipe; A mounting shell is welded on the upper inner side of the cabinet, and the electrical components are mounted in the mounting shell. The mounting shell is a box body with an open bottom, and the pipe opening of the delivery pipe is arranged below the opening of the mounting shell to facilitate the fire extinguishing gas to enter the mounting shell; When an electrical component installed in the housing explodes, the explosion gas will drive the blocking member to move downward, so that the blocking member blocks the upper opening of the protective housing, which can not only protect the ventilation components, but also prevent the explosion gas from spraying out of the heat dissipation holes; A clamping member is connected inside the protective shell, the clamping member includes a sliding rod, the sliding rod is slidably connected to the protective shell, a clamping block is connected to the sliding rod, an elastic member is connected to the sliding rod, and a limiting plate is connected to the other end of the sliding rod; A push switch is fixed on the inner side of the cabinet by bolts. The push switch is set corresponding to one of the limit plates. When the blocking piece moves downward to squeeze the clamping block, the limit plate will be driven to press the push switch. The solenoid valve is controlled by the push switch, and the solenoid valve controls the opening and closing of the delivery pipe. Elastic piston parts are provided at the pipe openings at both ends of the shunt pipe for sealing the pipe openings. The elastic piston parts include piston plates. The piston plates perform piston motion in the shunt pipe. An annular plate is provided on one side of each piston plate. The annular plate is connected to the shunt pipe. A fixing rod is inserted in the annular plate. One end of the fixing rod is connected to the piston plate, and the other end is connected to a push plate. The push plate is provided at the pipe opening of the shunt pipe. When an explosion occurs in the cabinet, the explosion gas enters the stepped hole through the connecting pipe, and then most of it enters the buffer cavity, and a small part enters the shunt pipe. The two push plates are pushed by the explosion gas, and the two push plates push the piston plates respectively. The two piston plates squeeze the fire-extinguishing gas toward the middle, and the fire-extinguishing gas is transported into the inner cabinet through the delivery pipe.

2. An explosion-proof power distribution cabinet according to claim 1, characterized in that: The ventilation assembly includes an exhaust fan and an intake fan.

3. An explosion-proof power distribution cabinet according to claim 2, characterized in that: An elastic barrier is connected inside the protective shell, which divides the interior of the protective shell into an exhaust chamber and an air intake chamber. The exhaust chamber is connected to the exhaust fan, and the air intake chamber is connected to the air intake fan. Heat dissipation holes are provided at the bottoms of the exhaust chamber and the air intake chamber.

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