An electrical instrument automatic control device with explosion-proof function

Abstract

The utility model belongs to the field of explosion-proof electrical instruments, and specifically is an electrical instrument automatic control device with explosion-proof function, comprising a shell installation component, one end of which is provided with a detachable sealing valve component; through the structural design of the sealing valve component, the function of convenient opening for maintenance and good sealing is achieved, the problem of complicated and troublesome bolt installation and sealing operation is solved, and the work efficiency of the staff is improved; through the structural design of the induction explosion-proof component, the function of arc leakage is achieved, and the problem that the electrical instrument cannot sense and prompt before the explosion is solved; through the structural design of the pressure reduction component, the function of discharging the internal air pressure while preventing the outside air from entering the inside of the device is achieved, and the problem of imbalance of the internal and external air pressure is solved; through the structural design of the wiring component, the function of separating and fixing a plurality of wires is achieved, and the problem of short circuit caused by collision between wires is solved.

Description

Technical Field

[0001] The utility model relates to the field of explosion-proof electrical instruments, in particular to an electrical instrument automatic control device with explosion-proof function. Background Art

[0002] With the development of society, instruments are used more and more frequently. Instruments mainly refer to the general term for measuring temperature, air pressure, electricity, blood volume, flow, etc. Instruments need to be placed inside a protective shell for explosion-proof protection. Instruments have a variety of styles. Different instrument styles determine the diversity of shells. Single-function instruments and shells specifically used to store instruments need to be customized.

[0003] However, most explosion-proof devices for electrical instruments place the electrical instruments in a customized sealed rectangular box, and use relatively hard materials and a completely sealed space inside to achieve explosion-proof. However, as the electrical instruments continue to operate in the sealed space, the internal air pressure will increase. It is necessary to ensure the air pressure balance inside and outside the explosion-proof device to prevent accidents caused by excessive or insufficient pressure. Inside the explosion-proof device, electrical instruments will generate arcs and heat during operation, which need to be discharged in time, otherwise it will cause equipment failure and safety hazards.

[0004] Therefore, in view of the above problems, an electrical instrument automatic control device with explosion-proof function is proposed. Utility Model Content

[0005] In order to make up for the deficiency of the prior art and the problem that the internal and external air pressures cannot be balanced, the utility model proposes an electrical instrument automatic control device with explosion-proof function.

[0006] The utility model solves the technical problem by adopting the following technical solution: an automatic control device for an electrical instrument with explosion-proof function, comprising a shell mounting assembly, one end of which is provided with a detachable sealing valve assembly, an upper end of which is provided with an induction explosion-proof assembly, a middle part of which is provided with a pair of mutually symmetrical pressure-reducing assemblies, a lower end of which is provided with a wiring assembly, and an electrical instrument and its installation components are provided inside the shell mounting assembly.

[0007] Preferably, the housing mounting assembly includes a mounting base shell, one end of the mounting base shell is fixedly connected to a mounting sealing shell, an inner side wall of the mounting base shell is fixedly connected to a circular insulating gasket, one end of the circular insulating gasket is fixedly connected to an H-shaped mounting bracket, and a plurality of bolt mounting holes for mounting electrical instruments and their mounting components are provided in the middle portion of the H-shaped mounting bracket.

[0008] Preferably, the sealing valve assembly includes a threaded sealing disk threadedly connected to the middle of the mounting sealing shell, one end of the threaded sealing disk is fixedly connected to an explosion-proof cover plate, one end of the explosion-proof cover plate is fixedly connected to a rubber sealing ring, and the other end of the explosion-proof cover plate is fixedly connected to a pair of mutually symmetrical mounting handles.

[0009] Preferably, the induction explosion-proof component includes an upper induction electric sheet and a lower induction electric sheet arranged inside the mounting bottom shell, and the upper induction electric sheet and the lower induction electric sheet are both arranged in an arc shape, and a pair of mutually symmetrical rectangular insulating gaskets are fixedly connected to the middle parts of the upper induction electric sheet and the lower induction electric sheet, and a buffer spring is fixedly connected to the upper end of the rectangular insulating gasket, and one end of a plurality of buffer springs is fixedly connected to the inner side wall of the mounting bottom shell, and an alarm is fixedly connected to the upper end of the upper induction electric sheet and located on the outside of the mounting bottom shell.

[0010] Preferably, the pressure reducing assembly comprises a pair of pressure reducing exhaust pipes fixedly connected to the middle part of the mounting bottom shell, and the interior of the pressure reducing exhaust pipes is connected to the interior of the mounting bottom shell, one end of the pressure reducing exhaust pipes is connected to a tapered pipe, one end of the tapered pipe is connected to an air diffusion pipe, and the air diffusion pipe has a plurality of strip-shaped air outlet holes in the middle part, one end of the interior of the air diffusion pipe is fixedly connected to a return spring, one end of the return spring is fixedly connected to a tapered sliding block, and the tapered inclined surface of the tapered sliding block fits with the tapered inner wall of the tapered pipe.

[0011] Preferably, the cable arrangement assembly includes a cable arrangement sealing block fixedly connected to the lower end of the mounting bottom shell, a circular hole is opened inside the cable arrangement sealing block for easy passage of the wires, a plurality of screw rods are rotatably connected to the middle portion of the cable arrangement sealing block, and the screw rods and the circular holes are arranged in a one-to-one correspondence, one end of the screw rod is rotatably connected to an arc-shaped clamping block located inside the cable arrangement sealing block, and one end of the screw rod is fixedly connected to the outside of the cable arrangement sealing block.

[0012] The utility model is beneficial in that:

[0013] 1. The utility model realizes the function of convenient opening for maintenance and good sealing performance through the structural design of the sealing valve assembly, solves the problem of complicated and troublesome operation of bolt installation and sealing, and improves the work efficiency of the staff;

[0014] 2. The utility model realizes the function of arc leakage through the structural design of the induction explosion-proof component, solves the problem that electrical instruments cannot sense and prompt before explosion, and reduces the probability of explosion.

[0015] 3. The utility model realizes the function of discharging the internal air pressure while preventing the outside air from entering the device through the structural design of the pressure reducing component, solves the problem of imbalance of internal and external air pressure, and improves the adaptability of electrical instruments.

[0016] 4. The utility model realizes the function of separating and fixing multiple wires through the structural design of the wire arrangement assembly, solves the problem of short circuit caused by collision between wires, and reduces the possibility of short circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the installation bottom shell of the utility model;

[0020] Figure 3 It is a schematic diagram of the overall split structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the cable sealing block of the utility model;

[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of the air diffuser pipe of the utility model;

[0023] Figure 6 It is an enlarged structural schematic diagram of the sealing valve assembly of the utility model.

[0024] In the figure: 1. Shell installation assembly; 2. Sealing valve assembly; 3. Inductive explosion-proof assembly; 4. Pressure reduction assembly; 5. Wiring assembly; 6. Electrical instruments and their installation components; 101. Install the bottom shell; 102. Install the sealing shell; 103. Round insulating gasket; 104. H-type mounting bracket; 201. Explosion-proof cover; 202. Threaded sealing disk; 203. Rubber sealing ring; 204. Install handle; 301. Upper inductive electrode; 302. Lower inductive electrode; 303. Rectangular insulating gasket; 304. Buffer spring; 305. Alarm; 401. Pressure reduction exhaust pipe; 402. Conical pipe; 403. Diffuser; 404. Conical sliding block; 405. Reset spring; 501. Wiring sealing block; 502. Screw rod; 503. Arc clamping block; 504. Knob. DETAILED DESCRIPTION

[0025] 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.

[0026] The following is combined with Figure 1 —6 further details of this application,

[0027] The present application embodiment discloses an electrical instrument automatic control device with explosion-proof function. Figure 1 and Figure 6 An electrical instrument automatic control device with explosion-proof function includes a shell mounting assembly 1, a detachable sealing valve assembly 2 is provided at one end of the shell mounting assembly 1, an induction explosion-proof assembly 3 is provided at the upper end of the shell mounting assembly 1, a pair of mutually symmetrical pressure reducing assemblies 4 are provided in the middle of the shell mounting assembly 1, a wiring assembly 5 is provided at the lower end of the shell mounting assembly 1, and an electrical instrument and its installation components 6 are provided inside the shell mounting assembly 1.

[0028] Reference Figure 1 and Figure 3 The housing mounting assembly 1 includes a mounting bottom shell 101, one end of the mounting bottom shell 101 is fixedly connected to a mounting sealing shell 102, the inner side wall of the mounting bottom shell 101 is fixedly connected to a circular insulating gasket 103, one end of the circular insulating gasket 103 is fixedly connected to an H-shaped mounting bracket 104, and the middle portion of the H-shaped mounting bracket 104 is provided with a plurality of bolt mounting holes for mounting the electrical instrument and its mounting components 6;

[0029] The circular insulating gasket 103 is made of insulating rubber, and the H-shaped mounting bracket 104 is made of ordinary alloy.

[0030] Reference Figure 1 and Figure 6 The sealing valve assembly 2 includes a threaded sealing disk 202 threadedly connected to the middle of the mounting sealing shell 102, one end of the threaded sealing disk 202 is fixedly connected to an explosion-proof cover plate 201, one end of the explosion-proof cover plate 201 is fixedly connected to a rubber sealing ring 203, and the other end of the explosion-proof cover plate 201 is fixedly connected to a pair of mutually symmetrical mounting handles 204.

[0031] Reference Figure 1 and Figure 6The induction explosion-proof component 3 includes an upper induction electric sheet 301 and a lower induction electric sheet 302 arranged inside the installation bottom shell 101, and the upper induction electric sheet 301 and the lower induction electric sheet 302 are both arranged in an arc shape, and a pair of mutually symmetrical rectangular insulating gaskets 303 are fixedly connected to the middle of the upper induction electric sheet 301 and the lower induction electric sheet 302, and a buffer spring 304 is fixedly connected to the upper end of the rectangular insulating gasket 303, and one end of the plurality of buffer springs 304 is fixedly connected to the inner side wall of the installation bottom shell 101, and an alarm 305 is fixedly connected to the upper end of the upper induction electric sheet 301 and located on the outer side of the installation bottom shell 101;

[0032] The induction sheet 302 is made of conductive metal and can conduct the arc to the alarm 305. When the alarm 305 senses the arc, it will issue a danger alarm.

[0033] Reference Figure 1 and Figure 6 The pressure reducing assembly 4 includes a pair of pressure reducing exhaust pipes 401 fixedly connected to the middle of the mounting bottom shell 101, and the interior of the pressure reducing exhaust pipe 401 is connected to the interior of the mounting bottom shell 101, one end of the pressure reducing exhaust pipe 401 is connected to a tapered pipe 402, one end of the tapered pipe 402 is connected to a diffuser pipe 403, and the diffuser pipe 403 is provided with a plurality of strip-shaped air outlet holes in the middle, one end of the diffuser pipe 403 is fixedly connected to a return spring 405, and one end of the return spring 405 is fixedly connected to a tapered sliding block 404, and the tapered inclined surface of the tapered sliding block 404 fits with the tapered inner wall of the tapered pipe 402;

[0034] The interior of the conical sliding block 404 is hollow, which can reduce its weight.

[0035] Reference Figure 1 and Figure 5 The cable assembly 5 includes a cable sealing block 501 fixedly connected to the lower end of the mounting bottom shell 101. A circular hole is opened inside the cable sealing block 501 for the wires to pass through. The middle of the cable sealing block 501 is rotatably connected to a plurality of screw rods 502, and the screw rods 502 are arranged in a one-to-one correspondence with the circular holes. One end of the screw rod 502 is located inside the cable sealing block 501 and is fixedly connected to an arc-shaped clamping block 503. One end of the screw rod 502 is located outside the cable sealing block 501 and is fixedly connected to a knob 504.

[0036] Working principle: first, you need to rotate a pair of mounting handles 204 fixedly connected to the middle of the explosion-proof cover 201, separate the threaded sealing disk 202 from the mounting sealing shell 102 through the thread, and at the same time, cooperate with the setting of the rubber sealing ring 203 to achieve better sealing, and then install the electrical instrument and its mounting components 6 on the H-shaped mounting bracket 104 inside the mounting bottom shell 101 through bolts. The circular insulating gasket 103 on one side of the H-shaped mounting bracket 104 can be used to isolate it from the mounting bottom shell 101 to prevent the arc from being conducted to the mounting bottom shell 101 and causing danger. After installing the electrical instrument and its mounting components 6, if you need to connect the wires, you only need to pass the wires through the circular holes inside the cable sealing block 501 and connect them to the lower end of the electrical instrument and its mounting components 6. After the connection is completed, you can rotate the knob 504. The rotation of the knob 504 drives the arc-shaped clamping block 503 connected to the lower end to move downward. The wires are squeezed to make them more stable after installation. At the same time, the wires are separated to reduce the probability of short circuit. If an arc leak occurs inside the electrical instrument and its installed components 6, the arc can be conducted to the alarm 305 through the upper induction plate 301. The alarm 305 sends out a danger alarm to remind the staff to come for maintenance. If an explosion occurs inside, the impact force of the explosion can be alleviated by multiple buffer springs 304. At the same time, with the setting of the pressure-reducing exhaust pipe 401, when the air pressure inside the installation bottom shell 101 is too high, the airflow squeezes the conical sliding block 404, and the conical sliding block 404 squeezes the reset spring 405, so that the conical sliding block 404 is separated from the state of being fitted with the inside of the conical tube 402. In this way, while automatically exhausting the air pressure, it can also prevent the outside air from entering, achieve a state of internal and external air pressure balance, and reduce the probability of failure of the electrical instrument and its installed components 6.

[0037] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An electrical instrument automatic control device with explosion-proof function, characterized in that: The invention comprises a housing mounting assembly (1), wherein one end of the housing mounting assembly (1) is provided with a detachable sealing valve assembly (2), the upper end of the housing mounting assembly (1) is provided with an induction explosion-proof assembly (3), the middle part of the housing mounting assembly (1) is provided with a pair of mutually symmetrical pressure reducing assemblies (4), the lower end of the housing mounting assembly (1) is provided with a wiring assembly (5), and the interior of the housing mounting assembly (1) is provided with an electrical instrument and its installation components (6).

2. The electrical instrument automatic control device with explosion-proof function according to claim 1 is characterized in that: The housing mounting assembly (1) comprises a mounting base shell (101), one end of the mounting base shell (101) is fixedly connected to a mounting sealing shell (102), an inner side wall of the mounting base shell (101) is fixedly connected to a circular insulating gasket (103), one end of the circular insulating gasket (103) is fixedly connected to an H-shaped mounting bracket (104), and a plurality of bolt mounting holes for mounting electrical instruments and mounting components (6) thereof are provided in the middle of the H-shaped mounting bracket (104).

3. The electrical instrument automatic control device with explosion-proof function according to claim 2 is characterized in that: The sealing valve assembly (2) comprises a threaded sealing disk (202) threadedly connected to the middle of the mounting sealing shell (102), one end of the threaded sealing disk (202) being fixedly connected to an explosion-proof cover plate (201), one end of the explosion-proof cover plate (201) being fixedly connected to a rubber sealing ring (203), and the other end of the explosion-proof cover plate (201) being fixedly connected to a pair of mutually symmetrical mounting handles (204).

4. The electrical instrument automatic control device with explosion-proof function according to claim 2 is characterized in that: The induction explosion-proof component (3) comprises an upper induction electric sheet (301) and a lower induction electric sheet (302) arranged inside the installation base shell (101), and the upper induction electric sheet (301) and the lower induction electric sheet (302) are both arranged in an arc shape, and a pair of mutually symmetrical rectangular insulating gaskets (303) are fixedly connected to the middle parts of the upper induction electric sheet (301) and the lower induction electric sheet (302), and a buffer spring (304) is fixedly connected to the upper end of the rectangular insulating gasket (303), and one end of a plurality of buffer springs (304) is fixedly connected to the inner side wall of the installation base shell (101), and an alarm (305) is fixedly connected to the upper end of the upper induction electric sheet (301) and located outside the installation base shell (101).

5. The electrical instrument automatic control device with explosion-proof function according to claim 2 is characterized in that: The pressure reducing assembly (4) comprises a pair of pressure reducing exhaust pipes (401) fixedly connected to the middle of the mounting bottom shell (101), and the interior of the pressure reducing exhaust pipes (401) is connected to the interior of the mounting bottom shell (101), one end of the pressure reducing exhaust pipe (401) is connected to a conical pipe (402), one end of the conical pipe (402) is connected to an air diffusion pipe (403), and the middle of the air diffusion pipe (403) is provided with a plurality of strip-shaped air outlet holes, one end of the interior of the air diffusion pipe (403) is fixedly connected to a return spring (405), and one end of the return spring (405) is fixedly connected to a conical sliding block (404), and the conical inclined surface of the conical sliding block (404) fits with the conical inner wall of the conical pipe (402).

6. The explosion-proof electrical instrument automatic control device according to claim 2, characterized in that: The cable arrangement assembly (5) comprises a cable arrangement sealing block (501) fixedly connected to the lower end of the mounting bottom shell (101); a circular hole is provided inside the cable arrangement sealing block (501) for the wires to pass through; a plurality of screw rods (502) are rotatably connected to the middle of the cable arrangement sealing block (501); the screw rods (502) and the circular holes are arranged in a one-to-one correspondence; one end of the screw rod (502) is rotatably connected to an arc-shaped clamping block (503) located inside the cable arrangement sealing block (501); and one end of the screw rod (502) is fixedly connected to the outside of the cable arrangement sealing block (501) with a knob (504).

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