CN213602549U

CN213602549U - Switch voltage-stabilized power supply with intrinsic safety output

Info

Publication number: CN213602549U
Application number: CN202022812945.7U
Authority: CN
Inventors: 潘海新
Original assignee: Chongqing Xintou Technology Co ltd
Current assignee: Chongqing Xintou Technology Co ltd
Priority date: 2020-11-29
Filing date: 2020-11-29
Publication date: 2021-07-02
Anticipated expiration: 2030-11-29

Abstract

The utility model discloses a switch constant voltage power supply with this ampere of output, including the protective housing, install the top cap on the protective housing, cable sealing mechanism is installed to the front end of protective housing, and cable sealing mechanism includes first cover seat and fixed plate, has seted up the through-wire groove in the first cover seat, and the through-wire inslot is provided with the end offset plate, is equipped with the extrusion piece on the fixed plate, and the bottom surface of extrusion piece is provided with a offset plate, still is provided with second cover seat on the fixed plate, has seted up the packing groove on the top offset plate, and the inside and the packing groove of second cover seat are linked together through the through-hole. This switching regulated power supply with this ampere of output, through the cable sealing mechanism who sets up for when the cable passes from cable sealing mechanism, top offset plate and bottom offset plate can make top offset plate and bottom offset plate parcel in the peripheral department of cable under to the cable extrusion, and the while is further filled to cable outlying gap through adding sealed oil and can make fluid enter into the surface of cable in the second cover seat, reaches the mesh that keeps the inside leakproofness of protective housing.

Description

Switch voltage-stabilized power supply with intrinsic safety output

Technical Field

The utility model relates to an electrical equipment technical field specifically is a switching regulated power supply with this ampere of output.

Background

The intrinsically safe output switch voltage-stabilized power supply is an intrinsically safe power supply for short, and is mainly applied to environments containing explosive mixtures, such as petroleum, chemical engineering, textile, coal mines and the like, the interior of a power supply circuit and an outgoing line are safe whether in normal work or in a fault state, and the generated electric sparks cannot ignite the explosive mixtures in the surrounding environment. Because the outgoing line part of the power supply can not keep good sealing performance with the power supply due to reasons such as traction and shaking, external inflammable and explosive air is easy to leak into the power supply, and certain potential safety hazard is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a switching regulated power supply with this ampere of output to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a switch voltage-stabilized power supply with intrinsic safety output comprises a protective shell, wherein a top cover is installed at the top end of the protective shell, a power supply installation cavity used for placing the switch voltage-stabilized power supply is formed in the protective shell, a through window communicated with the power supply installation cavity is formed in the front end of the protective shell, a cable sealing mechanism is arranged on the protective shell and comprises a first sleeve seat and a fixed plate, the first sleeve seat is sleeved in the through window and is tightly welded with the protective shell, the fixed plate covers the front end of the first sleeve seat, a through wire groove with an inclined plane-shaped bottom is formed in the first sleeve seat, a bottom rubber plate is tightly bonded on the bottom of the through wire groove, an extrusion block is integrally formed at the rear end of the fixed plate, a top rubber plate is tightly bonded on the inclined plane-shaped bottom rubber plate, a plurality of convex columns are tightly welded at the front end of the fixed plate, the inner part of the convex column is hollow and is communicated with the rear end face of the fixed plate, a second sleeve seat is tightly welded on the front end face of the fixed plate, a filling groove is formed in the top rubber plate, and a through hole communicated with the filling groove is formed in the surface of the fixed plate on the inner side of the second sleeve seat.

Preferably, the shell of the protective shell is internally provided with a clamping cavity, the shell of the top cover is internally provided with a cavity, and the clamping cavity and the cavity are in a vacuum state.

Preferably, both ends all are penetrating form around the through-line groove, the bottom surface of extrusion piece is the inclined plane form and stretches into in the through-line groove, the fixed plate passes through the bolt fastening on the preceding terminal surface of protective housing.

Preferably, a screw cap is in threaded connection with the opening of the convex column, is hollow and is internally sleeved with a flexible extrusion sleeve.

Preferably, a liquid injection cavity is formed in the second sleeve seat, a liquid injection port is tightly welded at the top end of the second sleeve seat, and an end cover is connected to the top end of the liquid injection port in a threaded manner.

Compared with the prior art, the beneficial effects of the utility model are that:

this switching regulated power supply with this ampere of output, through setting up the cable sealing mechanism on the protective housing for when switching regulated power supply's cable passed from cable sealing mechanism's inside, top offset plate and bottom offset plate can make top offset plate and bottom offset plate parcel in the periphery department of cable under to the cable extrusion, and the surface that can make fluid enter into the cable and further fill to cable outlying gap through adding sealed oil in the second cover seat simultaneously, reaches the purpose that keeps the protective housing internal seal nature.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a partial sectional view of the present invention;

fig. 3 is a schematic structural view of a cable sealing mechanism according to the present invention;

fig. 4 is a cross-sectional view of the cable sealing mechanism of the present invention;

fig. 5 is a sectional view of the second socket of the present invention.

The meaning of each reference number in the figures is:

1. a protective shell; 11. a power supply installation cavity; 12. a window is opened; 13. a clamp cavity; 2. a top cover; 21. a cavity; 3. a cable sealing mechanism; 31. a first nest base; 311. a through wire groove; 312. a bottom rubber plate; 32. a fixing plate; 321. extruding the block; 322. a rubber plate is pushed; 3221. filling the groove; 323. a convex column; 3231. screwing the cap; 3232. extruding a sleeve; 33. a second socket; 331. a liquid injection cavity; 332. a liquid injection port; 324. a through hole; 333. and (4) end covers.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "a", "an", and "the" mean two or more unless explicitly limited otherwise.

Referring to fig. 1-5, the present invention provides a technical solution:

the utility model provides a switching regulated power supply with this ampere of output, includes protective housing 1, and top cap 2 is installed on the top of protective housing 1, and the inside double-layered chamber 13 of having seted up of casing of protective housing 1, and cavity 21 has been seted up to top cap 2's casing inside, presss from both sides chamber 13 and cavity 21 and all is the vacuum state, increases the inside isolation ability of protective housing 1.

In this embodiment, a power supply installation cavity 11 for placing a switching voltage-stabilized power supply is formed in the protective shell 1, a through window 12 communicated with the power supply installation cavity 11 is formed in the front end of the protective shell 1, a cable sealing mechanism 3 is arranged on the protective shell 1, and the cable sealing mechanism 3 comprises a first sleeve seat 31 and a fixing plate 32, wherein the first sleeve seat 31 is sleeved in the through window 12 and is tightly welded with the protective shell 1, and the fixing plate 32 covers the front end of the first sleeve seat 31. The first sleeve seat 31 is internally provided with a through groove 311 with an inclined bottom surface, a bottom rubber plate 312 is tightly bonded on the bottom of the through groove 311, the rear end of the fixing plate 32 is integrally formed with a pressing block 321, the bottom surface of the pressing block 321 is inclined and tightly bonded with a top rubber plate 322, the top rubber plate 322 is bonded with the bottom rubber plate 312, the front end and the rear end of the through groove 311 are both through, the bottom surface of the pressing block 321 is inclined and extends into the through groove 311, the fixing plate 32 is fixed on the front end surface of the protective shell 1 through bolts, when a connecting cable of the switching regulated power supply in the protective shell 1 is led out from the through groove 311 and the fixing plate 32 is closed, the pressing block 321 extends into the through groove 311 to drive the pressing block 321 to drive the top rubber plate 322 to press the cable, so that the top rubber plate 322 and the bottom rubber plate 312 which are pressed around the cable are tightly bonded, and the purpose of closing the gap around the cable is achieved, thereby increasing the tightness of the interior of the protective case 1 and preventing the entry of outside hazardous gases. The second sleeve seat 33 is tightly welded on the front end face of the fixing plate 32, the top rubber plate 322 is provided with a filling groove 3221, the surface of the fixing plate 32 on the inner side of the second sleeve seat 33 is provided with a through hole 324 communicated with the filling groove 3221, and oil for sealing is injected into the second sleeve seat 33, so that the oil is filled into the filling groove 3221 along the through hole 324, gaps around the cable are further filled with the oil, and the purpose of further increasing the internal sealing performance of the protective shell 1 is achieved.

Specifically, a plurality of convex columns 323 are tightly welded at the front end of the fixing plate 32, the inner parts of the convex columns 323 are hollow and communicated with the rear end face of the fixing plate 32, so that the cables can be led out from the convex columns 323 respectively after being led out from the wire passing groove 311, and the cables can be conveniently classified and managed.

Furthermore, a screw cap 3231 is screwed at the mouth of the convex column 323, the screw cap 3231 is hollow and is internally sleeved with a flexible extrusion sleeve 3232, the cable is led out from the middle of the extrusion sleeve 3232, and the extrusion sleeve 3232 is tightly attached to the surface of the cable, so that the inner part of the convex column 323 can be sealed after the screw cap 3231 is screwed.

In addition, a liquid injection chamber 331 is formed in the second socket 33, a liquid injection port 332 is tightly welded to the top end of the second socket 33, an end cap 333 is screwed to the top end of the liquid injection port 332, and sealing oil can be added into the second socket 33 from the liquid injection port 332 so that the oil can flow into the filling groove 3221 through the through hole 324.

When the switching regulated power supply with intrinsic safety output of the embodiment is connected with a cable, the cable firstly passes through the wire passing groove 311, then penetrates into the convex column 323 and extends out of the convex column 323, then the fixing plate 32 is gradually folded on the surface of the protective shell 1 and the fixing plate 32 is fixed on the protective shell 1 by using bolts, at this time, the extrusion block 321 extends into the wire through groove 311 to enable the extrusion block 321 to drive the top rubber plate 322 to extrude the cable, so that the top rubber plate 322 and the bottom rubber plate 312 extruded around the cable are tightly attached to each other to achieve the purpose of closing the gap around the cable, therefore, the sealing performance inside the protective shell 1 is improved, external dangerous gas is prevented from entering, oil is injected into the second sleeve seat 33 from the liquid injection port 332, the oil is filled into the filling groove 3221 along the through hole 324, gaps around the cable are further filled with the oil, and the purpose of further improving the sealing performance inside the protective shell 1 is achieved.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a switching regulated power supply with this ampere of output, includes protective housing (1), top cap (2), its characterized in that are installed on the top of protective housing (1): a power supply installation cavity (11) used for placing a switch voltage-stabilized power supply is formed in the protective shell (1), a through window (12) communicated with the power supply installation cavity (11) is formed in the front end of the protective shell (1), a cable sealing mechanism (3) is arranged on the protective shell (1), the cable sealing mechanism (3) comprises a first sleeve seat (31) which is sleeved in the through window (12) and is tightly welded with the protective shell (1) and a fixing plate (32) which covers the front end of the first sleeve seat (31), a through line groove (311) with an inclined plane-shaped bottom surface is formed in the first sleeve seat (31), a bottom rubber plate (312) is tightly bonded on the bottom of the through line groove (311), an extrusion block (321) is integrally formed at the rear end of the fixing plate (32), the bottom surface of the extrusion block (321) is inclined plane-shaped and is tightly bonded with a top rubber plate (322), the top offset plate (322) with end offset plate (312) is laminated mutually, the front end close welding of fixed plate (32) has a plurality of projection (323), the inside of projection (323) be the cavity form and with the rear end face of fixed plate (32) is linked together, close welding has second cover seat (33) on the preceding terminal surface of fixed plate (32), packing groove (3221) have been seted up on top offset plate (322), second cover seat (33) are inboard fixed plate (32) seted up on the surface with through-hole (324) that packing groove (3221) are linked together.

2. A regulated power supply according to claim 1 having an intrinsically safe output, wherein: the novel vacuum pump is characterized in that a clamping cavity (13) is formed in the shell of the protective shell (1), a cavity (21) is formed in the shell of the top cover (2), and the clamping cavity (13) and the cavity (21) are in a vacuum state.

3. A regulated power supply according to claim 1 having an intrinsically safe output, wherein: the front end and the rear end of the through line groove (311) are both transparent, the bottom surface of the extrusion block (321) is inclined and extends into the through line groove (311), and the fixing plate (32) is fixed on the front end face of the protective shell (1) through bolts.

4. A regulated power supply according to claim 1 having an intrinsically safe output, wherein: the mouth of the convex column (323) is in threaded connection with a screw cap (3231), and the screw cap (3231) is hollow and is internally sleeved with a flexible extrusion sleeve (3232).

5. A regulated power supply according to claim 1 having an intrinsically safe output, wherein: a liquid injection cavity (331) is formed in the second sleeve seat (33), a liquid injection port (332) is tightly welded at the top end of the second sleeve seat (33), and an end cover (333) is connected to the top end of the liquid injection port (332) in a threaded mode.