CN217428535U

CN217428535U - Explosion-proof device and electrical equipment

Info

Publication number: CN217428535U
Application number: CN202220852167.0U
Authority: CN
Inventors: 任向阳; 李永红; 刘龙; 李文浩
Original assignee: Sungrow Power Supply Co Ltd
Current assignee: Sungrow Power Supply Co Ltd
Priority date: 2022-04-13
Filing date: 2022-04-13
Publication date: 2022-09-13
Anticipated expiration: 2032-04-13

Abstract

The utility model discloses an explosion-proof device and electrical equipment, wherein, the explosion-proof device comprises a first shell, a second shell, a screw component and a positioning component, the first shell comprises at least one connecting lug, and the connecting lug is provided with a connecting hole; the second shell and the first shell are mutually covered and provided with installation through holes corresponding to the connecting holes; the screw assembly connects the first housing and the second housing; the positioning assembly is connected with the connecting hole and the mounting through hole so as to limit the first shell and/or the second shell to rotate around the screw assembly. The utility model discloses technical scheme can guarantee that first casing and the reliable lid of second casing close to improve explosion-proof equipment's structural stability.

Description

Explosion-proof device and electrical equipment

Technical Field

The utility model relates to an electrical equipment technical field, in particular to explosion-proof equipment and electrical equipment.

Background

At present, when short-circuit faults occur in internal devices of electrical equipment such as inverters and converters, explosion risks are easy to occur, and when explosion occurs, the situations of flying, deformation, deflection and the like easily occur due to explosion impact in a shell structure assembly such as a door cover and the like in which the devices are arranged, so that potential safety hazards exist in the use of the electrical equipment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an explosion-proof device aims at guaranteeing that first casing and second casing reliably cover and close to improve explosion-proof device's structural stability.

In order to achieve the above object, the utility model provides an explosion-proof device, include:

the first shell comprises at least one connecting lug, and the connecting lug is provided with a connecting hole;

the second shell is mutually covered with the first shell and is provided with an installation through hole corresponding to the connecting hole;

a screw assembly connecting the first housing and the second housing; and

and the positioning assembly is connected with the connecting hole and the mounting through hole so as to limit the first shell and/or the second shell to rotate around the screw assembly.

Optionally, the positioning assembly includes a guide limiting part, the guide limiting part includes a first connecting section and a second connecting section, the first connecting section is fixedly connected to the second housing, and the second connecting section sequentially passes through the mounting via hole and the connecting hole.

Optionally, a receiving groove is formed in a side, facing away from the connecting lug, of the second housing, and the first connecting section is embedded in the receiving groove.

Optionally, a limiting structure is arranged on the surface of the first connecting section facing the second connecting section, and an embedding groove matched with the limiting structure is concavely arranged on the groove wall of the accommodating groove.

Optionally, the positioning assembly further includes a locking member, and the second connecting section is fixedly connected to the locking member.

Optionally, the outer surface of the second connecting section is provided with a threaded portion, and the second connecting section is in threaded connection with the locking piece.

Optionally, the explosion-proof device further includes an adaptor, and the adaptor is detachably connected to the first housing and the second housing, respectively.

Optionally, the first housing includes a first outer surrounding plate, the first outer surrounding plate is provided with a first mounting hole, the second housing includes a second outer surrounding plate, the second outer surrounding plate is provided with a second mounting hole, and the adaptor is detachably connected to the first housing and the second housing through the first mounting hole and the second mounting hole.

Optionally, a sealing connector is fixed to at least one of the first mounting hole and the second mounting hole, a connecting thread is arranged in the sealing connector, and the connecting thread is used for being in threaded connection with a fastener.

Optionally, a blind hole is formed in the sealing connector, and the wall of the blind hole is provided with the connecting thread.

The utility model also provides an electrical equipment, this electrical equipment includes as above explosion-proof equipment.

The utility model discloses technical scheme is through adopting mutually supporting of screw subassembly and locating component, when first casing and second casing are fashionable each other to cover, can the combined action and restrict first casing and/or second casing and take place rotary motion around screw subassembly, be favorable to improving the connection reliability of first casing and second casing and promote the lid of first casing and second casing and close stability, wherein, the setting of engaging lug can increase the structural strength of first casing, make the joint strength between first casing and the second casing promote simultaneously, furthermore, can also disperse the power that acts on first casing, impact force when for example exploding, grabbing power during the transport etc., further alleviate the deformation degree of first casing, ensure the reliable connection of first casing and second casing, thereby improve the safety in utilization of first casing and second casing.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the explosion-proof device of the present invention;

fig. 2 is a schematic perspective view of the first housing in fig. 1;

FIG. 3 is a top plan view of the explosion vent of FIG. 1;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is an exploded view of the explosion proof device of FIG. 1;

FIG. 6 is a cross-sectional view of the explosion vent of FIG. 1;

fig. 7 is a partial enlarged view of fig. 6 at B.

The reference numbers indicate:

reference numerals	Name(s)	Reference numerals	Name (R)
				10	First shell	30	Screw assembly
10a	First fixing hole	31	Central screw
				11	Connecting ear	32	Press-riveting nut
11a	Connecting hole		40					Positioning assembly
				12	First outside coaming	41	Guide limiting part
12a	First mounting hole	41a	First connecting section
				20	Second shell	41b	Second connecting section
20a	Mounting vias		42					Locking part
				21	Second outer side coaming	50	Adapter
21a	Second mounting hole	51	Sealing connecting piece
				22	Mounting position	51a	Blind hole
22a	Second fixing hole

The realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.

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 of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides an explosion-proof device.

Referring to fig. 1 to 7, in the embodiment of the present invention, the explosion-proof device includes a first housing 10, a second housing 20, a screw assembly 30 and a positioning assembly 40, the first housing 10 includes at least one engaging lug 11, and the engaging lug 11 is opened with a connecting hole 11 a; the second shell 20 and the first shell 10 are mutually covered and provided with installation through holes 20a corresponding to the connecting holes 11 a; the screw assembly 30 connects the first and

second housings

10 and 20; the positioning assembly 40 connects the connection hole 11a and the mounting through hole 20a to restrict the first housing 10 and/or the second housing 20 from rotating about the screw assembly 30.

Electrical equipment such as dc-to-ac converter generally can set up shell structure to install relevant electron device in shell structure, shell structure can be for the utility model discloses a first casing 10 and second casing 20 that the looks lid closed constitute, wherein, first casing 10 and second casing 20 can be lid and box, and this box can be used for acceping fixed electron device, and perhaps, first casing 10 and second casing 20 can be the lid together, and at least one lid has the ability of holding electron device. In particular, the first shell and the second shell may be cylindrical structures, and the cross section of the first shell and the second shell in the horizontal plane may be circular, square or even irregular.

Taking the first casing 10 as a cover and the second casing 20 as a box, when an electronic device is in operation and has a fault such as short circuit, an explosion risk is likely to occur, so that the first casing 10 is blown away under an explosion impact, which is very likely to cause injury to personnel, or when an electrical apparatus is circulated in a production line, the first casing 10 is easily deformed excessively due to the grabbing of a carrying tool such as a gripper, and even the first casing 10 and the second casing 20 are separated, so that the first casing 10 is fixed to the second casing 20 by the screw assembly 30, it can be understood that, in one embodiment, the first casing 10 is provided with a first fixing hole 10a, the second casing 20 is provided with a connecting position, and the connecting position is provided with a second fixing hole 22a corresponding to the first fixing hole 10a, wherein the first fixing hole 10a can be provided in a middle region of the first casing 10, screw assembly 30 is matched with central screw 31 and pressure rivet nut 32 this moment, utilize central screw 31 to pass first fixed orifices 10a and second fixed orifices 22a in proper order, and with the fixed fastening force of pressure rivet nut 32, make first casing 10 and second casing 20 firm connection, and the simple operation, when the explosion impact appears, screw assembly 30 can prolong the pressure release time between first casing 10 and the second casing 20, make first casing 10 warp but not blown away by the explosion, reduce the potential safety hazard, satisfy electrical equipment's explosion-proof demand.

Further, as shown in fig. 2 to 4, in order to avoid the first housing 10 from being misaligned with the second housing 20 due to the rotation of the first housing 10 using the screw assembly 30 as a rotation point, the first housing 10 includes at least one engaging lug 11, and the engaging lug 11 may be disposed on a peripheral edge of the first housing 10, for example, formed by bending the peripheral edge of the first housing 10 outward, so as to connect with the second housing 20 and improve the structural strength of the first housing 10, but the engaging lug 11 may also be fixed to the first housing 10 by a connection method such as welding. Furthermore, the first housing 10 is further restricted from rotating around the screw assembly 30 by the joint lug 11 and the screw assembly 30 cooperating together, so as to improve the stability of the first housing 10 and the second housing 20 in covering and connecting, and improve the stability of the first housing 10 and the second housing 20 in connecting.

In addition, when engaging lug 11 is provided with a plurality of, a plurality of engaging lugs 11 interval are arranged, can further disperse the impact force that acts on first casing 10, and further strengthen first casing 10 and second casing 20's joint strength to make first casing 10 and second casing 20's lid close stability and can promote by a wide margin, further guarantee the stability of explosion-proof equipment overall structure.

Wherein, the connecting ear 11 is provided with a connecting hole 11a, the second shell 20 is provided with a mounting through hole 20a corresponding to the connecting hole 11a, when the first and

second housings

10 and 20 are covered with each other, the coupling holes 11a and the mounting through-holes 20a are aligned and coupled by the positioning assembly 40, and thus, the efficiency of installation of the first and

second housings

10 and 20 can be improved, and in cooperation with the screw assembly 30, the arrangement of the plurality of connection points further limits the first shell 10 to rotate relative to the second shell 20 through the screw assembly 30, improves the connection strength and connection stability of the first shell 10 and the second shell 20, ensures the first shell 10 and the second shell 20 to be reliably connected and covered, further, when an explosion occurs, the explosion impact impacts the first housing 10 by the coupling fastening force of the screw assembly 30 and the positioning assembly 40, and at this time, the first housing 10 is deformed without being separated from the second housing 20; when the first housing 10 is used for carrying electrical equipment, for example, circulation of the electrical equipment in a production process, the deformation amount of the first housing 10 is small due to the connection fastening force of the screw assembly 30 and the positioning assembly 40, and the connection reliability of the first housing 10 and the second housing 20 is ensured, thereby ensuring safe use of the electrical equipment.

The technical proposal of the utility model adopts the mutual matching of the screw component 30 and the positioning component 40, when the first casing 10 and the second casing 20 are mutually covered, the first casing 10 and the second casing 20 can be cooperated and limited to rotate around the screw assembly 30, which is beneficial to improving the connection reliability of the first casing 10 and the second casing 20 and improving the covering stability of the first casing 10 and the second casing 20, wherein, the arrangement of the engaging lug 11 can increase the structural strength of the first casing 10, and at the same time, the connecting strength between the first casing 10 and the second casing 20 can be improved, and in addition, the force acting on the first casing 10 can be dispersed, for example, an impact force at the time of explosion, a gripping force at the time of transportation, or the like, further reduces the degree of deformation of the first casing 10, ensures reliable connection of the first casing 10 and the second casing 20, and improves the safety of use of the first casing 10 and the second casing 20.

Referring to fig. 5, in an embodiment, the positioning assembly 40 includes a guiding position-limiting member 41, the guiding position-limiting member 41 includes a first connecting section 41a and a second connecting section 41b, the first connecting section 41a is fixedly connected to the second housing 20, and the second connecting section 41b sequentially passes through the mounting hole 20a and the connecting hole 11a, it can be understood that the first connecting section 41a may be fixed to the second housing 20 by welding, riveting, or concave-convex embedding, wherein the second connecting section 41b sequentially passes through the mounting hole 20a and the connecting hole 11a, that is, the second connecting section 41b is convexly disposed on the surface of the second housing 20 facing the first housing 10 to perform guiding and limiting functions, at this time, only the connecting hole 11a on the connecting lug 11 needs to be sleeved on the outer peripheral surface of the second connecting section 41b, so as to quickly and accurately cover the first housing 10 and the second housing 20, thereby improving the assembly efficiency, the anti-explosion device can be matched with the screw assembly 30 to limit the first shell 10 to rotate relative to the second shell 20 through the screw assembly 30, the connection is reliable, the covering is tight, the covering stability of the first shell 10 and the second shell 20 is ensured, the normal use of the anti-explosion device is promoted, and the use safety of the anti-explosion device is improved.

Further, in an embodiment, an accommodating groove is formed in one side of the second housing 20, which is away from the connecting lug 11, and the first connecting section 41a is embedded into the accommodating groove, so that the surface of the first connecting section 41a, which is away from the second connecting section 41b, is flush with the plane where the notch of the accommodating groove is located, which not only improves the connection firmness of the guide limiting piece 41 and the second housing 20, but also prevents the guide limiting piece 41 from affecting the installation of the device in the second housing 20, thereby reducing the damage or destruction to the guide limiting piece 41 and the device.

Furthermore, in an embodiment, the surface of the first connecting section 41a facing the second connecting section 41b is provided with a limiting structure, and a groove wall of the accommodating groove is concavely provided with a caulking groove adapted to the limiting structure, so that the limiting structure and the caulking groove interact with each other, which can prevent the guide limiting member 41 from loosening, and prevent the guide limiting member 41 from performing a rotational motion relative to the second housing 20, thereby improving the installation reliability of the guide limiting member 41. Specifically, the limiting structure may be a spline structure, a protrusion structure, or the like.

When the guide limiting part 41 is a rivet pressing screw, only the first connecting section 41a of the guide limiting part 41 needs to be pressed into the installation through hole 20a of the second shell 20 by a rivet pressing machine, at this time, the periphery of the installation through hole 20a is deformed, and an accommodating groove and an embedding groove which are matched with the first connecting section 41a in structure are formed, so that the processing steps are simplified, the operation is simple and convenient, the forming is quick, and the processing efficiency and the assembly efficiency can be improved; meanwhile, the manufacturing cost of the explosion-proof device can be reduced, and the practicability of the explosion-proof device is improved; of course, the present invention is not limited thereto, and in other embodiments, the outer peripheral surface of the second connection section 41b may be provided with a connection slot, or alternatively, the second connection section 41b is provided with a connection thread.

Referring to fig. 4 to 5, in an embodiment, the positioning assembly 40 further includes a locking member 42, and the second connecting section 41b is fixedly connected to the locking member 42, so that the connection strength between the first housing 10 and the second housing 20 can be enhanced, and it is ensured that the second housing 20 cannot be separated from the guide limiting member 41 and the second housing 20 along the second connecting section 41b, when the guide limiting member 41 is a fastener with external threads, that is, the outer circumferential surface of the second connecting section 41b is provided with external threads, the locking member 42 can be a nut screwed with the external threads; when the guiding position-limiting member 41 is a fastening member with a slot, that is, a slot is formed on the outer circumferential surface of the second connecting section 41b, and the locking member 42 may be a fastening structure tenon-and-mortise or snap-connected with the slot.

Further, the outer surface of the second connection section 41b is provided with a threaded portion, the second connection section 41b is in threaded connection with the locking member 42, and it can be understood that the locking member 42 may be a connection nut, and at this time, the nut is in threaded connection with the second connection section 41b and screwed to abut against the connection lug 11, so that the moving range of the first housing 10 can be effectively limited, the effective contact area with the first housing 10 is increased, and the connection firmness of the connection lug 11 and the second housing 20 is improved.

In the production line, the circulation of the electrical equipment is mainly realized by acting on the first shell 10 through a tool such as a mechanical claw, and the like, so that the acted first shell 10 is extremely easy to be damaged.

Referring to fig. 5 to 7, in an embodiment, the explosion-proof device further includes an adaptor 50, the adaptor 50 is detachably connected to the first housing 10 and the second housing 20, and by adding the adaptor 50, on one hand, the connection point between the first housing 10 and the second housing 20 can be increased, so that the connection strength and the connection stability between the first housing 10 and the second housing 20 can be further improved, and further, when an explosion is impacted, due to the reliable connection between the first housing 10 and the second housing 20, the explosion-proof requirement of the electrical equipment can be further satisfied; when being grabbed, the deformation degree of the first shell 10 can be further reduced, the normal use of the first shell 10 is ensured, and the reliable connection with the second shell 20 is ensured, so that the safe use of the electrical equipment is ensured.

Specifically, the adaptor 50 is detachably connected to the first housing 10 and the second housing 20, which is beneficial to the disassembly and assembly of the adaptor 50, wherein the adaptor 50 is mainly installed at a position where there is a risk of deformation in the first housing 10 and/or the second housing 20, so that when the electrical equipment is in a risk process, such as circulation and transportation on a production line, an anti-deformation guarantee is provided for the first housing 10 and the second housing 20, and the use reliability of the electrical equipment is improved. In addition, after risk process, can choose to demolish adaptor 50 to guarantee that electrical equipment can not influence the normal use in later stage because of the setting of adaptor 50.

Referring to fig. 5, in an embodiment, the first housing 10 includes a first outer side wall 12, the first outer side wall 12 has a first mounting hole 12a, the second housing 20 includes a second outer side wall 21, the second outer side wall 21 has a second mounting hole 21a, and the adaptor 50 is detachably connected to the first housing 10 and the second housing 20 through the first mounting hole 12a and the second mounting hole 21a, it can be understood that the structure of the adaptor 50 is adapted to the peripheries of the first housing 10 and the second housing 20 after being covered, for example, as shown in fig. 5, the adaptor 50 is a long lath and is adapted to the peripheries of the first housing 10 and the second housing 20 after being bent for multiple times, wherein the first mounting hole 12a may be located right above the second mounting hole 21a, and of course, the first mounting hole 12a and the second mounting hole 21a may also be arranged in a staggered manner.

Specifically, the adaptor 50 may be provided with mounting holes corresponding to the first mounting hole 12a and the second mounting hole 21a for facilitating connection by using fasteners such as bolts, for example, although the embodiment is not limited thereto, in other embodiments, the adaptor 50 may be provided with connectors corresponding to the first mounting hole 12a and the second mounting hole 21a for facilitating connection of the adaptor 50, and the adaptor 50 may also be fixed to the first housing 10 and the second housing 20, respectively.

Further, as shown in fig. 6 to 7, in an embodiment, a sealing connector 51 is fixed to at least one of the first mounting hole 12a and the second mounting hole 21a, and a connecting thread is arranged in the sealing connector 51 and is used for being in threaded connection with a fastener, so that when the adaptor 50 is fixed to the sealing connector 51 through the fastener, the sealing connector 51 and the fastener block the first mounting hole 12a and/or the second mounting hole 21a, the sealing grade of the first shell 10 and the second shell 20 is not changed, the entering of impurities such as water and dust is avoided, and the normal operation and the service life of the electrical equipment are ensured.

Further, as shown in fig. 7, in an embodiment, a blind hole 51a is formed in the sealing connector 51, and the wall of the blind hole 51a is provided with a connecting thread, so that when the adaptor 50 is removed, the sealing connector 51 can still block the first mounting hole 12a and/or the second mounting hole 21a, thereby ensuring that the sealing grade of the first housing 10 and the second housing 20 is unchanged; specifically, the sealing connector 51 may be a sealing rivet nut post, the bottom of which is sealed to prevent penetration of the fastener, and the fastener may be a screw.

The utility model discloses still provide an electrical equipment, this electrical equipment includes explosion-proof equipment, and above-mentioned embodiment is referred to this explosion-proof equipment's concrete structure, because this electrical equipment has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, gives unnecessary detail here one by one.

The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. An explosion protection device, comprising:

a screw assembly connecting the first housing and the second housing; and

2. The explosion proof device of claim 1 wherein said positioning assembly comprises a guide limit piece, said guide limit piece comprising a first connecting segment and a second connecting segment, said first connecting segment being fixedly connected to said second housing, said second connecting segment passing through said mounting via and said attachment hole in sequence.

3. The explosion protection device as set forth in claim 2, wherein a receiving groove is formed at a side of said second housing facing away from said engaging lug, and said first connecting section is fitted into said receiving groove.

4. The explosion-proof device as recited in claim 3, wherein the surface of the first connecting section facing the second connecting section is provided with a limiting structure, and the groove wall of the accommodating groove is concavely provided with an embedding groove matched with the limiting structure.

5. The explosion vent as set forth in claim 2, wherein said positioning assembly further comprises a fastener, said second connector segment being fixedly connected to said fastener.

6. The explosion vent apparatus as set forth in claim 5, wherein said second connecting section has a threaded portion on an outer surface thereof, said second connecting section being threadedly connected to said fastener.

7. The explosion protection device as set forth in claim 1, further comprising adapters removably connected to said first housing and said second housing, respectively.

8. The explosion vent as set forth in claim 7, wherein said first housing includes a first outer skirt, said first outer skirt defining a first mounting hole, said second housing including a second outer skirt, said second outer skirt defining a second mounting hole, said adaptor being removably connected to said first housing and said second housing through said first mounting hole and said second mounting hole.

9. The explosion vent as set forth in claim 8, wherein at least one of said first and second mounting openings has a seal connection secured thereto, said seal connection having a connecting thread disposed therein for threaded engagement with a fastener.

10. The explosion protection device as claimed in claim 9, wherein said sealing connection member has a blind bore therein, the bore wall of said blind bore being provided with said connecting thread.

11. An electrical apparatus, characterized in that it comprises an explosion-proof device according to any one of claims 1 to 10.