Explosion-proof intelligent controller of intelligent positive-pressure explosion-proof electrical cabinet

Abstract

The utility model discloses an explosion-proof intelligent controller for an intelligent positive-pressure explosion-proof electrical cabinet, which comprises an electrical cabinet and an automatic adjusting mechanism, and the upper surface of the electrical cabinet is provided with a through hole. The automatic adjusting mechanism comprises a fixing block, a piston and a second spring, the fixing block is fixedly connected to the upper side of the left surface of the interior of the electrical cabinet, the piston is slidably connected to the interior of the fixing block, the second spring is fixedly connected between the left surface of the piston and the left surface of the electrical cabinet, and the interior of the fixing block is divided into a left cavity and a right cavity by the piston; according to the explosion-proof intelligent controller of the intelligent positive-pressure explosion-proof electrical cabinet, through the automatic adjusting mechanism, when the air pressure in the electrical cabinet changes, the connecting contact is driven to move, the connecting contact is connected or disconnected to drive the air pump to run or stop, and therefore the change of the air pressure in the electrical cabinet can be adjusted in real time; the stability of the air pressure in the intelligent positive-pressure explosion-proof electrical cabinet is improved, the timeliness is higher, and the burden of operators is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of explosion -proof electrical cabinet, concretely is intelligent positive pressure explosion -proof electrical cabinet explosion -proof intelligent controller. BACKGROUND

[0002] The positive pressure type explosion -proof electrical cabinet is the electrical equipment specially designed for the inflammable and explosive environment, and is widely used in the petroleum chemical industry, natural gas exploitation, coal exploitation, pharmaceutical industry and the like.

[0003] The existing positive pressure explosion -proof electrical cabinet monitors the air pressure in the electrical cabinet through the pressure sensor, maintains the positive pressure in the cabinet, prevents the external explosive gas mixture from entering, and thus ensures the safe use in the inflammable and explosive environment.

[0004] The existing positive pressure explosion -proof electrical cabinet monitors the air pressure in the electrical cabinet through the pressure sensor, and when the air pressure value does not comply with the specified air pressure, the positive pressure explosion -proof electrical cabinet issues an alarm to prompt the operator to pressurize the inside of the electrical cabinet. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem of overcoming the defects of the prior art, and provides an intelligent positive pressure explosion -proof electrical cabinet explosion -proof intelligent controller.

[0006] To achieve the above object, the utility model provides the following technical scheme: an intelligent positive pressure explosion -proof electrical cabinet explosion -proof intelligent controller, comprising an electrical cabinet, a through hole is formed in the upper surface of the electrical cabinet, and an automatic adjusting mechanism is further included.

[0007] The automatic adjusting mechanism comprises a fixed block, a piston and a spring, the fixed block is fixedly connected to the inner left surface of the electrical cabinet, the piston is slidably connected to the inside of the fixed block, the spring is fixedly connected between the left surface of the piston and the left surface of the electrical cabinet, the piston divides the inside of the fixed block into a left chamber and a right chamber, the left chamber is in communication with the outside through a through hole, the right chamber is in communication with the inside of the electrical cabinet through a slot on the right surface of the fixed block, when the air pressure in the electrical cabinet changes, the automatic adjusting mechanism drives the connecting contact to move, the connecting contact is turned on or turned off to drive the air pump to run or stop, so that the air pressure in the electrical cabinet can be adjusted in time, the stability of the air pressure in the intelligent positive pressure explosion-proof electrical cabinet is improved, the timeliness is higher, and the burden of the operator is reduced.

[0008] Further, the left surface of the electrical cabinet is fixedly connected with a single-chip microcomputer, an input end of the single-chip microcomputer is electrically connected with an output end of an external power supply, and the operation of the electrical appliance is controlled.

[0009] Further, the automatic adjusting mechanism further comprises a connecting contact one, a connecting contact two, a fixed cylinder and a spring one, the connecting contact one is fixedly connected to the inner right surface of the fixed block, the right surface of the piston is fixedly connected with the fixed cylinder, the inside of the fixed cylinder is slidably connected with a sliding column, the right end of the sliding column is fixedly connected with the connecting contact two, the left surface of the sliding column and the inner wall of the fixed cylinder are fixedly connected with the spring one, and the input end of the connecting contact two is electrically connected with the output end of the single-chip microcomputer, so that the input end of the air pump is turned on or turned off.

[0010] Further, the right surface of the electrical cabinet is fixedly connected with the air pump, the input end of the air pump is electrically connected with the output end of the connecting contact one, and the inside of the electrical cabinet is pressurized.

[0011] Further, the right side of the air inlet on the right surface of the electrical cabinet is fixedly connected with an air inlet pipe, the upper end of the air inlet pipe is in communication with the air outlet of the air pump, the left side of the air outlet on the left surface of the electrical cabinet is fixedly connected with an air outlet pipe, and the left end of the air outlet pipe is provided with a sealing cover for the inlet and outlet gas.

[0012] Further, the inside and the left and right surfaces of the electrical cabinet are hingedly connected with protection doors through hinges, and the front surfaces of the protection doors are fixedly connected with protection glasses, so that the intelligent positive pressure explosion-proof electrical cabinet is protected.

[0013] Further, the upper surface of the single-chip microcomputer is fixedly connected with an indicator lamp, the input end of the indicator lamp is electrically connected with the output end of the single-chip microcomputer, and the indicator lamp alarms and reminds when the air pressure is not within the specified value.

[0014] Compared with the prior art, the intelligent positive pressure explosion-proof electrical cabinet explosion-proof intelligent controller has the following advantages:

[0015] Through the automatic adjusting mechanism, when the internal air pressure of the electrical cabinet changes, the connecting contact is driven to move, the connecting contact is turned on and off, the air pump is driven to run or stop, so that the internal air pressure of the electrical cabinet can be adjusted in time, the stability of the internal air pressure of the intelligent positive pressure explosion-proof electrical cabinet is improved, the timeliness is higher, and the burden of the operator is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a structure schematic view of the utility model;

[0017] Fig. 2 It is a structure schematic view of the utility model;

[0018] Fig. 3 It is a structure schematic view of the utility model A place amplification.

[0019] In the drawing: 1 electrical cabinet, 2 air pump, 3 air inlet pipe, 4 protective door, 5 protective glass, 6 through hole, 7 single-chip microcomputer, 8 automatic adjusting mechanism, 81 fixed block, 82 connecting contact one, 83 connecting contact two, 84 fixed cylinder, 85 spring one, 86 piston, 87 spring two, 9 indicator light, 10 air outlet pipe, 11 sealing cover. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0021] Please refer to Figs. 1-3 The technical scheme is provided in the embodiment: the explosion-proof intelligent controller of the intelligent positive pressure explosion-proof electrical cabinet, including the electrical cabinet 1, the upper surface of the electrical cabinet 1 is provided with the through hole 6, the left and right surfaces in the electrical cabinet 1 are both hinged with the protective door 4 through the hinge, the front surfaces of the protective door 4 are all fixedly connected with the protective glass 5, the left surface of the electrical cabinet 1 is fixedly connected with the single-chip microcomputer 7, the input end of the single-chip microcomputer 7 is electrically connected with the output end of the external power supply, the upper surface of the single-chip microcomputer 7 is fixedly connected with the indicator light 9, the input end of the indicator light 9 is electrically connected with the output end of the single-chip microcomputer 7, further including the automatic adjusting mechanism 8.

[0022] The automatic adjusting mechanism 8 comprises a fixed block 81, a piston 86 and a spring 87, the fixed block 81 is fixedly connected to the inner left surface of the electrical cabinet 1, the inner part of the fixed block 81 is slidably connected with the piston 86, the left surface of the piston 86 is fixedly connected with the spring 87 between the left surface of the electrical cabinet 1, the piston 86 divides the inner part of the fixed block 81 into a left chamber and a right chamber, the left chamber is connected with the outside through the through hole 6, the right chamber is connected with the inside of the electrical cabinet 1 through the slot on the right surface of the fixed block 81, the single-chip microcomputer 7 is operated to supply power to the connecting contact 83, at this time, the spring 87 relaxes to push the piston 86 to move rightward, the automatic adjusting mechanism 8 further comprises a connecting contact 82, the connecting contact 83, a fixed cylinder 84 and a spring 85, the connecting contact 82 is fixedly connected to the inner right surface of the fixed block 81, the right surface of the piston 86 is fixedly connected with the fixed cylinder 84, the inner part of the fixed cylinder 84 is slidably connected with a sliding column, the right end of the sliding column is fixedly connected with the connecting contact 83, the left surface of the sliding column is fixedly connected with the spring 85 between the inner wall of the fixed cylinder 84, the input end of the connecting contact 83 is electrically connected with the output end of the single-chip microcomputer 7, the right surface of the electrical cabinet 1 is fixedly connected with the air pump 2, the input end of the air pump 2 is electrically connected with the output end of the connecting contact 82, the fixed cylinder 84 is driven to move rightward, the sliding column is driven to move rightward, the connecting contact 83 is driven to move rightward, the connecting contact 83 is contacted with the connecting contact 82, at the same time, the spring 85 relaxes to push the sliding column to move rightward, the connecting contact 83 is tightly contacted with the connecting contact 82, the air pump 2 is connected with the circuit, the air pump 2 is operated, at the same time, the single-chip microcomputer 7 controls the indicator lamp 9 to flicker to remind the operator, the right side of the air inlet on the right surface of the electrical cabinet 1 is fixedly connected with the air inlet pipe 3, the upper end of the air inlet pipe 3 is connected with the air outlet of the air pump 2, the left side of the air outlet on the left surface of the electrical cabinet 1 is fixedly connected with the air outlet pipe 10, the left end of the air outlet pipe 10 is fixedly connected with the sealing cover 11 through bolts, the inert gas such as nitrogen gas conveying pipeline is connected with the air inlet of the air pump 2, the inert gas is conveyed to the inside of the electrical cabinet 1, at the same time, the air in the electrical cabinet 1 is discharged through the air outlet pipe 10, after the air is discharged, the bolts are tightened to make the sealing cover 11 tightly contacted with the right end of the air outlet pipe 10, the air outlet pipe 10 is sealed, at this time, the air pressure in the inside of the electrical cabinet 1 is increased, the air pressure in the inside of the electrical cabinet 1 is greater than the outside air pressure, thereby the piston 86 is pushed to move leftward, the spring 87 is contracted, when the air pressure in the inside of the electrical cabinet 1 reaches a specific value, the connecting contact 83 is separated from the connecting contact 82, the air pump 2 is powered off, at the same time, the elastic force of the spring 87 to the piston 86 is equal to the pressure of the air in the inside of the electrical cabinet 1 to the piston 86, when the air pressure in the inside of the electrical cabinet 1 is reduced, the piston 86 moves rightward to make the connecting contact 83 contacted with the connecting contact 82, the air pump 2 is operated, thereby the air pressure in the inside of the electrical cabinet 1 is ensured to be at a specific value.

[0023] The working principle of the explosion-proof intelligent controller of the intelligent positive pressure explosion-proof electrical cabinet is as follows: when the explosion-proof intelligent controller is used to inflate the inside of the positive pressure explosion-proof electrical cabinet, the single-chip microcomputer 7 supplies power to the connecting contact two 83, at this time the spring two 87 relaxes, pushes the piston 86 to move rightwards, drives the fixed cylinder 84 to move rightwards, drives the sliding column to move rightwards, drives the connecting contact two 83 to move rightwards, makes the connecting contact two 83 contact with the connecting contact one 82, at the same time the spring one 85 relaxes to push the sliding column to move rightwards, makes the connecting contact two 83 tightly contact with the connecting contact one 82, makes the air pump 2 connect the circuit, makes the air pump 2 run, at the same time the single-chip microcomputer 7 controls the indicator lamp 9 to flicker, reminds the operator, connects the nitrogen gas conveying pipeline with the air inlet of the air pump 2, conveys the inert gas into the inside of the electrical cabinet 1, at the same time the air in the inside of the electrical cabinet 1 is discharged through the air outlet pipe 10, after the air is discharged, the bolt is tightened, makes the sealing cover 11 tightly contact with the right end of the air outlet pipe 10, seals the air outlet pipe 10, at this time the air pressure in the inside of the electrical cabinet 1 increases, the air pressure in the inside of the electrical cabinet 1 is greater than the air pressure outside, thereby pushes the piston 86 to move leftwards, the spring two 87 contracts, when the air pressure in the inside of the electrical cabinet 1 reaches a specific value, the connecting contact two 83 is separated from the connecting contact one 82, the air pump 2 is powered off, at the same time the elastic force of the spring two 87 to the piston 86 is equal to the pressure of the gas in the inside of the electrical cabinet 1 to the piston 86, when the gas pressure in the inside of the electrical cabinet 1 decreases, the piston 86 moves rightwards, makes the connecting contact two 83 contact with the connecting contact one 82, the air pump 2 runs, thereby ensures that the air pressure in the inside of the electrical cabinet 1 is at a specific value.

[0024] It is worth noting that the air pump 2 in the above embodiment is selected as LTKS-09, the single-chip microcomputer 7 is selected as DZC-9011, the indicator lamp 9 is selected as FL4800, and the single-chip microcomputer 7 controls the air pump 2 and the indicator lamp 9 to work by using the method commonly used in the prior art.

[0025] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion by using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. An explosion-proof intelligent controller for an intelligent positive pressure explosion-proof electrical cabinet, comprising an electrical cabinet (1), a through hole (6) is formed in the upper surface of the electrical cabinet (1), characterized in that: Also include automatic adjustment mechanism (8); Automatic adjustment mechanism (8): it includes fixed block (81), piston (86) and spring two (87), the fixed block (81) is fixedly connected to the inner left surface of the electrical cabinet (1) upper side, the inner slide of fixed block (81) is connected with piston (86), the left surface of piston (86) and the left surface of electrical cabinet (1) are fixedly connected with spring two (87), piston (86) divides the inside of fixed block (81) into left chamber and right chamber, left chamber is connected with the outside through through hole (6), right chamber is connected with the inside of electrical cabinet (1) through the notch of the right surface of fixed block (81).

2. The explosion-proof intelligent controller of the intelligent positive pressure explosion-proof electrical cabinet according to claim 1, characterized in that: The left surface of the electrical cabinet (1) is fixedly connected with a single-chip microcomputer (7), and the input end of the single-chip microcomputer (7) is electrically connected with the output end of the external power supply.

3. The explosion-proof intelligent controller of the intelligent positive pressure explosion-proof electrical cabinet according to claim 2, characterized in that: The automatic adjustment mechanism (8) further comprises a connecting contact one (82), a connecting contact two (83), a fixed cylinder (84) and a spring one (85), the connecting contact one (82) is fixedly connected to the inner right surface of the fixed block (81), the right surface of the piston (86) is fixedly connected with the fixed cylinder (84), the inner slide of the fixed cylinder (84) is connected with the slide column, the right end of the slide column is fixedly connected with the connecting contact two (83), the left surface of the slide column and the inner wall of the fixed cylinder (84) are fixedly connected with the spring one (85), and the input end of the connecting contact two (83) is electrically connected with the output end of the single-chip microcomputer (7).

4. The explosion-proof intelligent controller of the intelligent positive pressure explosion-proof electrical cabinet according to claim 3, characterized in that: The right surface of the electrical cabinet (1) is fixedly connected with a gas pump (2), and the input end of the gas pump (2) is electrically connected with the output end of the connecting contact one (82).

5. The explosion-proof intelligent controller of the intelligent positive pressure explosion-proof electrical cabinet according to claim 4, characterized in that: The right side of the air inlet formed in the right surface of the electrical cabinet (1) is fixedly connected with an air inlet pipe (3), the upper end of the air inlet pipe (3) is communicated with the air outlet of the gas pump (2), and the left side of the air outlet formed in the left surface of the electrical cabinet (1) is fixedly connected with an air outlet pipe (10), and the left end of the air outlet pipe (10) is fixedly connected with a sealing cover (11) through bolts.

6. The explosion-proof intelligent controller of the intelligent positive pressure explosion-proof electrical cabinet according to claim 1, characterized in that: The left and right surfaces of the electrical cabinet (1) are both hinged with a protective door (4) through a hinge, and the front surface of the protective door (4) is fixedly connected with a protective glass (5).

7. The explosion-proof intelligent controller of the intelligent positive pressure explosion-proof electrical cabinet according to claim 2, characterized in that: The upper surface of the single-chip microcomputer (7) is fixedly connected with an indicating lamp (9), and the input end of the indicating lamp (9) is electrically connected with the output end of the single-chip microcomputer (7).

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