CN216123258U

CN216123258U - Pressure relief explosion-proof box and converter

Info

Publication number: CN216123258U
Application number: CN202122639141.6U
Authority: CN
Inventors: 蔡慧; 刘其猛; 贺超; 夏冬
Original assignee: Jiangsu Jingwei Rail Traffic Equipment Co ltd
Current assignee: Jiangsu Jingwei Rail Traffic Equipment Co ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-03-22
Anticipated expiration: 2031-10-29

Abstract

The utility model discloses a pressure relief explosion-proof box and a current transformer. The pressure-relief explosion-proof box comprises a box body, a door plate and an anti-falling mechanism, wherein the box body is provided with a cavity and an opening communicated with the cavity, the door plate covers the opening and is connected with the box body, and the anti-falling mechanism is connected with the door plate and the box body. Under encapsulated situation, the closed opening of door plant, and the edge connection box of door plant, under the inflation state, the door plant is kept away from with the box and is formed exhaust passage, exhaust passage passes through opening intercommunication cavity in order to release the cavity internal gas, anti-disengaging mechanism's setting, make when producing huge pressure in the box, the separation degree of door plant and box pressurized receives the anticreep round pin restriction, maintain the swing joint of door plant and box simultaneously, door plant and box are separable nevertheless can not drop promptly, promote the safety guarantee, aim at solving the explosion-proof exhaust of box and lead to the door plant to have the technical problem of the risk that drops when not in time.

Description

Pressure relief explosion-proof box and converter

Technical Field

The utility model relates to the technical field of rail transit, in particular to a pressure relief explosion-proof box and a current transformer using the same.

Background

The converter is widely applied to the field of rail transit as an electric energy conversion device. The rail transit field has very high reliability requirement to the converter box of installing in the automobile body bottom, and the drop of any object in the driving process influences train operation slightly, leads to major incident such as derailment seriously. The current transformer box body pressure relief explosion-proof structure scheme is mainly characterized in that a pressure relief valve is arranged on a box body, but the flow of the pressure relief valve is limited when the pressure relief valve is opened, and the current transformer box body pressure relief explosion-proof structure scheme can only discharge internal gas to balance internal and external pressure difference when the internal pressure of the box body is greater than the external side due to slow rise of the internal temperature in the normal operation process of the box body; once devices such as capacitors in the box body are abnormally exploded to generate a large amount of expansion gas, the pressure release valve cannot timely discharge the gas at all; at this moment, the door plate of the box body is likely to fall off to cause potential safety hazards.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a pressure relief explosion-proof box and a current transformer, and aims to solve the technical problem that a door plate has a falling risk due to the fact that explosion and exhaust of a box body are not timely.

In order to achieve the above object, the present invention provides a pressure relief explosion-proof tank, comprising:

the box body is provided with a cavity and an opening communicated with the cavity;

the door plate is movably covered on the opening; and

the anti-falling mechanism is connected with the door plate and the box body;

the door plate has a sealing state for sealing the opening and an expansion state for forming an exhaust passage with the box body, and in the sealing state, the anti-falling mechanism enables the door plate to be in sealing connection with the box body so as to seal the opening; in the expanded state, the exhaust passage communicates with the cavity through the opening.

Optionally, the anti-drop mechanism comprises:

the door locks are arranged on the door plate at intervals so as to fix the door plate and the box body; and

the anti-falling structure is respectively connected with the door panel and the box body;

wherein the anti-separation structure has a relaxed state in the sealed state and a tightened state in the expanded state;

in the sealing state, the door plate is in sealing connection with the box body through the door lock;

in the expansion state, the door plate is separated from the box body and drives the anti-falling structure to be in the tightening state, so that the opening is communicated with the exhaust channel and the cavity.

Optionally, the anti-dropping structure includes a first anti-dropping assembly and/or a second anti-dropping assembly, the first anti-dropping assembly is respectively connected with the door panel and the top frame of the box body, and the second anti-dropping assembly is respectively connected with the door panel and the side frame of the box body; the first anticreep subassembly includes:

the installation piece is arranged on the door panel;

one end of the flexible piece is connected with one end of the mounting piece, which is far away from the door panel; and

the hanging fastener is connected with one end, far away from the mounting piece, of the flexible piece, the top frame is provided with a retaining ring, and the hanging fastener is connected with the retaining ring in a buckling mode;

wherein in the relaxed state the flexible member is naturally suspended and in the taut state the flexible member is stretched to connect the top frame with the door panel when the exhaust passage is open.

Optionally, the door panel is provided with a fixing part, and the mounting part includes:

the mounting part is connected with the fixing part and arranged in parallel with the door panel; and

connecting portion, connecting portion with the installation department is the contained angle setting, the flexible member is kept away from hang fastener's one end with connecting portion fixed connection.

Optionally, the fixing part is a threaded column, and the mounting part is provided with a mounting hole and sleeved on the threaded column;

the connecting part is provided with a connecting hole, at least one end of the flexible piece is provided with a lantern ring, and the lantern ring penetrates through the connecting hole and is sleeved with the connecting part.

Optionally, the second anti-slip assembly comprises:

the inserting plate is arranged on the door plate and partially protrudes out of the door plate, and a protruding part of the inserting plate is provided with an inserting hole; and

the anti-dropping pin is arranged on the side frame, the anti-dropping pin penetrates through the inserting hole in a sliding mode, one end of the anti-dropping pin is fixed to the side frame, and the other end of the anti-dropping pin is connected with one side, away from the box body, of the inserting plate;

in the expansion state, the insertion plate is clamped with the anti-release pin so as to limit the separation of the side frame and the door plate when the exhaust channel is opened.

Optionally, the box body comprises two side frames, the two side frames are arranged in parallel and connected to two ends of the top frame respectively, and the anti-falling structure comprises at least two first anti-falling assemblies and at least two second anti-falling assemblies;

at least two first anti-falling assemblies are arranged at intervals and are connected with the top frame and the door panel;

at least two first anticreep subassembly interval sets up, one first anticreep subassembly is connected the door plant with one the side frame.

Optionally, the box is provided with at least one hook, the door panel is correspondingly provided with at least one clamping plate, the clamping plate is provided with a clamping hole, and the hook is arranged in the clamping hole so as to pre-install the door panel and the box.

Optionally, the pressure relief explosion-proof box further comprises a sealing strip, the sealing strip is arranged on the box body and is adjacent to the opening, and the sealing strip is located between the door plate and the box body.

The present invention also provides a converter, comprising:

a pressure relief explosion proof tank as described in any one of the above; and

and the box body of the pressure relief explosion-proof box is arranged on the mounting frame and is arranged on external equipment through the mounting frame.

According to the technical scheme, the anti-falling mechanisms are arranged on the box body and the door plate so as to solve the technical problem that the door plate is separated from the box body due to instant increase of the internal pressure of the box body. The pressure-relief explosion-proof box comprises a box body, a door plate and an anti-falling mechanism, wherein the box body is provided with a cavity and an opening communicated with the cavity, the door plate covers the opening and is connected with the box body, and the anti-falling mechanism is connected with the door plate and the box body. Under encapsulated situation, the closed opening of door plant, and the edge connection box of door plant, under the inflation state, the door plant is kept away from with the box and is formed exhaust passage, exhaust passage passes through opening intercommunication cavity in order to release the cavity internal gas, anti-disengaging mechanism's setting, make when producing huge pressure in the box, the separation degree of door plant and box pressurized receives the anticreep round pin restriction, maintain the swing joint of door plant and box simultaneously, door plant and box are separable nevertheless can not drop promptly, promote the safety guarantee, aim at solving the explosion-proof exhaust of box and lead to the door plant to have the technical problem of the risk that drops when not in time.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 perspective view of a pressure relief explosion-proof tank according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a door panel according to an embodiment of the pressure relief explosion-proof tank of the present invention;

FIG. 3 is a schematic perspective view of a first anti-separation assembly according to an embodiment of the pressure relief explosion-proof tank of the present invention;

fig. 4 is a schematic structural diagram of a tank body of an embodiment of the pressure relief explosion-proof tank of the utility model.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Pressure relief explosion-proof box	30	Anti-falling mechanism
10	Box body	31	Door lock
				10A	Cavity body		32	First anti-drop assembly
10B	Opening of the container	321	Mounting member
				11	Top frame	3211	Mounting part
12	Side frame	3212	Connecting part
				13	Bottom frame	321A	Mounting hole
111	Retaining ring	321B	Connecting hole
				112	Clamping hook	322	Flexible member
20	Door panel	3221	Lantern ring
				21	Fixing part	323	Hanging fastener
22	Card board	33	Second anti-drop component
				22A	Clamping hole		331	Plug board
60	Sealing strip	33A	Plug hole
						332	Anti-drop pin

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indications in the embodiments of the present invention are only used to explain the relative position relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating 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 meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 to 4, the present invention provides a pressure relief explosion-proof tank 100. Fig. 1 is a schematic perspective view of a pressure relief explosion-proof tank 100 according to an embodiment of the present invention; FIG. 2 is a schematic structural diagram of a door panel 20 of an embodiment of the pressure relief explosion proof tank 100 of the present invention; fig. 3 is a schematic perspective view of the first anti-slip assembly 32 of the pressure relief explosion-proof box 100 according to an embodiment of the utility model; fig. 4 is a schematic structural diagram of a case 10 of an embodiment of a pressure relief explosion-proof case 100 of the present invention.

Referring specifically to fig. 1, the pressure relief explosion-proof tank 100 includes a tank body 10, a door panel 20, and an anti-drop mechanism 30. The box body 10 is provided with a cavity 10A and an opening 10B communicated with the cavity 10A, the door plate 20 is movably covered on the opening 10B, and the anti-falling mechanism 30 is connected with the door plate 20 and the box body 10; wherein, the door panel 20 has a sealing state for sealing the opening 10B and an expansion state for forming an exhaust passage with the box 10, and in the sealing state, the anti-dropping mechanism 30 makes the door panel 20 and the box 10 connected in a sealing way to seal the opening 10B; in the expanded state, the exhaust passage communicates with the cavity 10A through the opening 10B.

In an alternative embodiment, the anti-dropping mechanism 30 is disposed on the box 10 and the door panel 20 to solve the technical problem that the door panel 20 is separated from the box 10 due to the instant increase of the internal pressure of the box 10. The pressure relief explosion-proof box 100 comprises a box body 10, a door panel 20 and an anti-falling mechanism 30, wherein the box body 10 is provided with a cavity 10A and an opening 10B communicated with the cavity 10A, the door panel 20 covers the opening 10B and is connected with the box body 10, and the anti-falling mechanism 30 is connected with the door panel 20 and the box body 10. Under sealed state, the closed opening 10B of door plant 20, and the edge connection box 10 of door plant 20, under inflation state, door plant 20 keeps away from with box 10 and forms exhaust passage, exhaust passage communicates cavity 10A through opening 10B in order to release the interior gas of cavity 10A, anti-disengaging mechanism 30's setting, when making in box 10 produce huge pressure, the separation degree of door plant 20 and box 10 pressurized is restricted by anticreep round pin 332, maintain the swing joint of door plant 20 and box 10 simultaneously, door plant 20 and box 10 are separable but can not drop promptly, promote the safety guarantee, aim at solving the technical problem that the untimely door plant 20 that leads to of box 10 explosion-proof exhaust has the risk of droing.

It will be appreciated that the conventional door panel 20 is connected to the cabinet 10 by a door lock 31, and the cabinet 10 of the present invention is also provided with a pressure relief valve for balancing the internal and external pressure differences when the internal pressure of the cabinet 10 is greater than that of the outside due to a slow rise in the internal temperature during the normal operation of the cabinet 10.

Optionally, the anti-falling mechanism 30 includes a plurality of door locks 31 and an anti-falling structure, the plurality of door locks 31 are disposed at intervals on the door panel 20 to fix the door panel 20 and the box 10; the anti-falling structure is respectively connected with the door panel 20 and the box body 10; wherein the anti-dropping structure has a relaxed state in a sealed state and a tightened state in an expanded state. In the sealing state, the door panel 20 is connected with the box body 10 in a sealing way through a door lock 31; in the expanded state, the door panel 20 is separated from the cabinet 10 and drives the anti-slip structure to be in a tight state, so that the opening 10B communicates with the exhaust passage and the cavity 10A.

In an optional embodiment, when the pressure relief valve of the box 10 is opened, the flow rate is limited, and only the requirement that when the internal temperature is slowly increased in the normal operation process of the box 10, the internal pressure of the box 10 is higher than the balanced internal and external pressure difference at the outer side can be met, once abnormal explosion of devices such as a capacitor and the like in the box 10 occurs to generate a large amount of expansion gas, the pressure relief valve cannot timely discharge the gas at all; at this time, the door 20 of the box body 10 is likely to fall off to cause a safety hazard. The anti-falling mechanism 30 of the utility model comprises a plurality of door locks 31, the door locks 31 are evenly distributed on the door panel 20 at intervals, and the door panel 20 is hermetically connected with the box body 10 through the door locks 31. When the device such as the capacitor in the box 10 explodes abnormally, the pressure difference between the inside and the outside of the box 10 is larger than the limit load of the door lock 31, at this time, the door lock 31 deforms and fails, and the door panel 20 is separated from the box 10 to form an exhaust passage. The first anti-falling structures of the anti-falling mechanism 30 are respectively connected with the top frame 11 of the door panel 20 and the box body 10, the door panel 20 and the side frame 12 of the box body 10, so that when the exhaust passage is opened, the door panel 20 is separated from the box body 10 but elastically connected, and meanwhile, the separation degree of the door panel 20 and the door frame is limited, and the elastic connection stability of the door panel 20 and the door frame is maintained.

Optionally, the anti-dropping structure includes a first anti-dropping assembly 32 and/or a second anti-dropping assembly 33, the first anti-dropping assembly 32 is respectively connected with the door panel 20 and the top frame 11 of the box body 10, and the second anti-dropping assembly 33 is respectively connected with the door panel 20 and the side frame 12 of the box body 10; the first anti-falling off assembly 32 comprises a mounting member 321, a flexible member 322 and a hanging member 323, the mounting member 321 is arranged on the door panel 20, one end of the flexible member 322 is connected with one end of the mounting member 321 far away from the door panel 20, the hanging member 323 is connected with one end of the flexible member 322 far away from the mounting member 321, the top frame 11 is provided with a retaining ring 111, and the hanging member 323 is connected with the retaining ring 111 in a buckling manner; wherein the flexible member 322 is naturally suspended in a relaxed state and the flexible member 322 is stretched in a tensed state to connect the top frame 11 with the door panel 20 when the exhaust passage is opened.

In an alternative embodiment, the anti-separation mechanism 30 includes a plurality of door locks 31 and an anti-separation structure, the anti-separation structure includes a first anti-separation assembly 32 and/or a second anti-separation assembly 33, the first anti-separation assembly 32 is used for connecting the door panel 20 with the top frame 11 of the box 10, the top frame 11 is provided with a retaining ring 111, one end of the first anti-separation assembly 32 is fixed on the door panel 20, and the other end is provided with a hanging fastener 323 to detachably fasten with the retaining ring 111; the flexible part 322 of the first anti-falling assembly 32 is made of an elastic material and can elastically stretch, and in a sealed state, the door panel 20 and the box body 10 are hermetically connected through the door lock 31, and at this time, the flexible part 322 is in a loose state; in the expanded state, the door lock 31 is disabled, the door panel 20 is separated from the cabinet 10 to form an exhaust passage, and at this time, the second anti-falling off assembly 33 limits the separation degree of the door panel 20 from the cabinet 10 and prevents the door panel from falling off, and at the same time, the flexible member 322 is stretched and generates an elastic force that pulls the door panel 20 and the cabinet 10 to each other, so that the door panel 20 and the cabinet 10 can be separated but not separated.

Optionally, the box body 10 includes two side frames 12, the two side frames 12 are disposed in parallel and connected to two ends of the top frame 11, respectively, and the anti-falling structure includes at least two first anti-falling assemblies 32 and at least two second anti-falling assemblies 33; at least two first anti-dropping assemblies 32 are arranged at intervals and used for connecting the top frame 11 and the door panel 20; at least two first anti-slip elements 32 are disposed at intervals, and one first anti-slip element 32 is used for connecting the door panel 20 and one side frame 12.

In an alternative embodiment, the edge of the box 10 with the opening 10B forms a top frame 11, a bottom frame 13 and two side frames 12 of the box 10, the top frame 11 is disposed parallel to the bottom frame 13, the two side frames 12 are disposed parallel, and two ends of each side frame 12 are respectively connected to the same side edge of the top frame 11 and the bottom frame 13. The anti-slip mechanism 30 is provided with at least two first anti-slip assemblies 32 and at least two second anti-slip assemblies 33. Two retaining rings 111 are arranged on the top frame 11 corresponding to the two second anti-detachment mechanisms 30, and the two retaining rings 111 are arranged at intervals and respectively close to the two side end parts of the top frame 11; door plant 20 corresponds two side frame 12 intervals and sets up two second anticreep subassemblies 33 to connect door plant 20 and side frame 12, second anticreep subassembly 33 limits the separation degree of door plant 20 and box 10, cooperates first anticreep subassembly 32 can adapt to the incasement highly compressed impact fast, and send and door plant 20 and box 10 and generate exhaust passage, ensures that the effective connection of door plant 20 and box 10 does not drop, promotes the safety guarantee.

It is understood that the pressure relief explosion-proof box 100 of the present invention may be separately provided with at least four first anti-falling off assemblies 32, the at least four first anti-falling off assemblies 32 may respectively connect the door panel 20 with the top frame 11, the two side frames 12 and the bottom frame 13 of the box body 10, and four retaining rings 111 are provided on the top frame 11, the two side frames 12 and the bottom frame 13 corresponding to the four first anti-falling off assemblies 32. In another embodiment, the pressure relief explosion-proof box 100 may be separately provided with at least four second anti-dropping assemblies 33, and the at least four second anti-dropping assemblies 33 may respectively connect the door panel 20 with the top frame 11, the two side frames 12 and the bottom frame 13 of the box body 10. In another embodiment in addition to the above embodiments, the pressure relief explosion-proof tank 100 may be provided with a different number of combination structures of the first and second

trip prevention assemblies

32 and 33, and fig. 1 is a combination example of one of the trip prevention structures.

Optionally, the door panel 20 is provided with a fixing portion 21, the mounting member 321 includes a mounting portion 3211 and a connecting portion 3212, the mounting portion 3211 is connected to the fixing portion 21, the mounting portion 3211 is parallel to the door panel 20, the connecting portion 3212 and the mounting portion 3211 form an included angle, and one end of the flexible member 322 far away from the hanging fastener 323 is fixedly connected to the connecting portion 3212.

In an optional embodiment, the mounting portion 3211 and the connecting portion 3212 of the mounting member 321 are formed by bending a metal plate block and forming an included angle with each other, a fixing portion 21 is disposed on the door panel 20 corresponding to the first anti-falling off component 32, the mounting portion 3211 is used for being mounted and matched with the fixing portion 21 and being parallel to the door panel 20, so that the connecting portion 3212 and the door panel 20 form an included angle, the connecting portion 3212 is connected to one end of the flexible component 322, the other end of the flexible component 322 is connected to the hook component 323, and the hook component 323 is detachably fastened to the buckle 111 disposed on the top frame 11. In a sealing state, the door panel 20 is connected with the box body 10 in a sealing way through the door lock 31, and the flexible piece 322 is in a loose state and does not bear force on the door panel 20 and the box body 10; in inflation state, flexible piece 322 atress produces elasticity, and the degree that the impact production offset and restriction door plant 20 and box 10 kept away from each other of elasticity and interior pressure, and second anticreep subassembly 33 is mad to the side of door plant 20 and box 10 and produces mechanical spacing, and flexible piece 322 produces elasticity spacing, and the cooperation strengthens the reliability that door plant 20 and box 10's separation did not break away from, effectively promotes the installation guarantee.

Optionally, the fixing portion 21 is a threaded post 21, and the mounting portion 3211 is provided with a mounting hole 321A and sleeved on the threaded post 21; the connecting portion 3212 is provided with a connecting hole 321B, at least one end of the flexible member 322 is provided with a collar 3221, and the collar 3221 passes through the connecting hole 321B to be sleeved with the connecting portion 3212.

In an alternative embodiment, the fixing portion 21 is a threaded column 21, and the mounting portion 3211 is connected to the fixing portion 21 to connect the first anti-slip device 32 to the door panel 20, wherein the mounting portion 3211 defines a mounting hole 321A, and a hole wall of the mounting hole 321A is threaded for being in threaded connection with the threaded column 21. The connecting portion 3212 is provided with a connecting hole 321B, two ends of the flexible member 322 are provided with a collar 3221, and the collar 3221 of one end of the flexible member 322 far away from the hook member 323 passes through the connecting hole 321B and is sleeved with the connecting portion 3212. The hanging fastener 323 is provided with an elastic buckling position interface, the hanging fastener 323 is pressed to open the elastic buckling position interface and penetrates through the retaining ring 111, and the elastic buckling position interface is closed after external force pressure is released, so that the hanging fastener 323 is buckled with the retaining ring 111, and the connection stability of the first anti-falling assembly 32, the top frame 11 and the door panel 20 is improved.

Optionally, the second anti-falling-off assembly 33 includes a plug board 331 and an anti-falling-off pin 332, the plug board 331 is disposed on the door panel 20 and partially protrudes out of the door panel 20, and a protruding portion of the plug board 331 is provided with a plug hole 33A; the anti-falling pin 332 is arranged on the side frame 12, the anti-falling pin 332 is slidably arranged in the inserting hole 33A, one end of the anti-falling pin 332 is fixed on the side frame 12, and the other end of the anti-falling pin 332 is connected with one side of the inserting plate 331 departing from the box body 10; wherein, in the expanded state, the insertion plate 331 is engaged with the separation preventing pin 332 to limit the separation degree of the side frame 12 from the door panel 20 when the exhaust passage is opened.

In an alternative embodiment, the second anti-separation assemblies 33 are used to connect the door panel 20 and the side frames 12, and each side frame 12 is connected to the door panel 20 through at least one second anti-separation assembly 33, so as to improve the connection reliability of the door panel 20 and the cabinet 10 in the expanded state. The second anti-falling assembly 33 comprises a plug board 331 and an anti-falling pin 332, the anti-falling pin 332 comprises a pin rod, a pin head and an elastic piece, one end of the pin rod is fixed on the side frame 12 through a bolt, a containing groove is formed in the pin rod, the elastic piece is arranged in the containing groove, two ends of the elastic piece are respectively connected with the pin rod and the pin head, the pin rod is arranged in a plug groove of the plug board 331 in a penetrating manner, the pin head is movably arranged at one end, far away from the side frame 12, of the pin rod, and the pin head is arranged on one side, far away from the side frame 12 and the door panel 20, of the plug board 331. The pin head approaches the side frame 12 under external pressure and rotates to be locked, so that the pin head is locked with the plug board 331. In a sealed state, a space is formed between the pin head and the insertion plate 331, so that the insertion plate 331 has a movement margin in the length direction of the pin rod; under inflation state, door plant 20 and box 10 separation, the synchronous orientation of plugboard 331 of locating on door plant 20 moves to butt round pin head to the direction of keeping away from box 10, two round pin heads on two side frames 12 carry on spacingly to plugboard 331 and door plant 20's removal, the flexible piece 322 is tensile makes door plant 20 and box 10 elastic connection, form box 10 and door plant 20's safe connection jointly, prevent that door plant 20 and box 10 break away from when discharging box 10 internal gas pressure fast, solve the potential safety hazard that door plant 20 breaks away from, promote safety guarantee. After the air is exhausted, the door panel 20 and the cabinet 10 are re-installed after the internal components of the service cabinet 10 are replaced.

It can be understood that the round pin head has a mounted position and locking position, the mounted position is that the round pin head rotates to the position that can pass through spliced eye 33A for the round pin head, during the installation, the round pin head is in the mounted position and passes spliced eye 33A, with round pin head application of force and rotatory certain angle reach the locking position, the round pin head can't pass through spliced eye 33A this moment, when not having the exogenic action, the round pin head can continuously keep locking position, effective restriction is carried out to the displacement to door plant 20 under the inflation state, promote the fail safe nature that door plant 20 and box 10 are connected.

Optionally, the box 10 is provided with at least one hook 112, the door panel 20 is correspondingly provided with at least one hook 22, the hook 22 is provided with a hook hole 22A, and the hook 112 is arranged in the hook hole 22A to pre-install the door panel 20 and the box 10.

In an alternative embodiment, a pre-installation operation is performed during the installation process of the door 20 and the box 10, wherein the box 10 is provided with at least one hook 112, the at least one hook 112 is disposed at the top frame 11, the door 20 is provided with a locking plate 22 corresponding to the buckle, and the locking plate 22 is provided with a locking hole 22A. During installation, the clamping hole 22A of the clamping plate 22 is aligned with the position of the clamping hook 112 and pushed forward, so that the clamping hook 112 is arranged in the clamping hole 22A to pre-install the door panel 20 and the box body 10, then the anti-drop pin 332 and the plug board 331 are installed and locked, and the door lock 31 and the first anti-drop assembly 32 can be operated to lock and install the door panel 20 and the box body 10. The stability and reliability of pre-installation operation lifting door panel 20 and box 10 installation, under the inflation state, produce the alternate segregation between door panel 20 and the box 10, the lock 31 pressurized overload of anti-disengaging mechanism 30 became invalid, and first anti-disengaging subassembly 32 and the effect of second anti-disengaging subassembly 33 of anti-disengaging mechanism 30 promote door panel 20 and box 10 elastic connection's reliability when the inflation state, promote the safety guarantee.

Optionally, the pressure relief explosion proof tank 100 further comprises a sealing strip 60, the sealing strip 60 is disposed on the tank body 10 and is disposed adjacent to the opening 10B, and the sealing strip 60 is located between the door panel 20 and the tank body 10.

In an alternative embodiment, the door 20 and the cabinet 10 are locked and sealed in a sealed state by the door lock 31, and the door 20 presses the top frame 11, the bottom frame 13 and the two side frames 12 of the cabinet 10. In order to improve the sealing effect between the door panel 20 and the box body 10, the pressure relief explosion-proof box 100 further includes a sealing strip 60, the sealing strip 60 is disposed on the box body 10 and adjacent to the opening 10B, and specifically, the sealing strip 60 is disposed around the top frame 11, the bottom frame 13 and the two side frames 12, so that the sealing strip 60 is located between the door panel 20 and the box body 10. When the door panel 20 is locked with the box body 10, the door panel 20 compresses the sealing strip 60, so that the connection sealing performance of the door panel 20 and the box body 10 is effectively improved, the dustproof and waterproof effects are achieved, and the service life of internal elements is indirectly prolonged.

It is understood that the box body 10 is provided with a mounting projection or a mounting groove of the weather strip 60 at a peripheral side adjacent to the opening 10B for fixing the weather strip 60 to the box body 10.

The utility model also provides a converter, which comprises a mounting rack and the pressure relief explosion-proof box 100. The specific structure of the pressure relief explosion-proof tank 100 refers to the above embodiments, and since the converter adopts all technical solutions of all the above embodiments, all the beneficial effects brought by the technical solutions of the above embodiments are at least achieved, and are not repeated herein. The box body 10 is provided to the mounting bracket and is mounted to an external device through the mounting bracket. Be provided with sealing strip 60 between box 10 and the door plant 20 of pressure release explosion-proof box 100 in order to promote door plant 20 and box 10's the sealing nature of being connected, anti-disengaging mechanism 30's lock 31 is under encapsulated situation, promote door plant 20 and box 10's connection reliability, when producing unusual high pressure in cavity 10A, door plant 20 and box 10 separation produce the exhaust passage of quick pressure release, first anticreep subassembly 32 makes door plant 20 and box 10 elastic connection this moment, second anticreep subassembly 33 restriction door plant 20 and box 10's separation relative position, two anti-disengaging structure's setting promotes under the inflation state, box 10's quick pressure release and door plant 20 and box 10's stability of being connected, effectively prevent door plant 20 and box 10 and drop, avoid the emergence of the potential safety hazard that drops and lead to, promote the safety guarantee. Meanwhile, the door plate 20 and the box body 10 after once expansion can be repeatedly installed and tried, the safety guarantee is improved, the production cost is reduced, and the expansion box is suitable for being widely popularized and used.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A pressure relief explosion proof tank, characterized in that, pressure relief explosion proof tank includes:

the door plate is movably covered on the opening; and

the anti-falling mechanism is connected with the door plate and the box body;

2. The pressure relief explosion vent tank of claim 1, wherein said anti-trip mechanism comprises:

the door locks are arranged on the door plate at intervals so as to connect the door plate and the box body; and

3. The pressure relief explosion-proof tank as claimed in claim 2, wherein the anti-dropping structure comprises a first anti-dropping assembly and/or a second anti-dropping assembly, the first anti-dropping assembly is connected with the door panel and the top frame of the tank body respectively, and the second anti-dropping assembly is connected with the door panel and the side frame of the tank body respectively;

the first anticreep subassembly includes:

the installation piece is arranged on the door panel;

4. The pressure relief explosion vent box of claim 3, wherein said door panel is provided with a fixing portion, said mounting member comprising:

5. The pressure relief explosion-proof tank of claim 4, wherein the fixing portion is a threaded post, and the mounting portion is provided with a mounting hole and sleeved on the threaded post;

6. The pressure relief explosion vent tank of claim 3, wherein said second trip prevention assembly comprises:

the anti-dropping pin is arranged on the box body, penetrates through the inserting hole in a sliding manner, and is fixed at one end of the side frame and connected with one side of the inserting plate, which is far away from the box body, at the other end;

7. The pressure relief explosion-proof tank as claimed in claim 3, wherein said tank body comprises two said side frames, said two said side frames are disposed in parallel and connected to two ends of said top frame respectively, said anti-dropping structure comprises at least two said first anti-dropping assemblies and at least two said second anti-dropping assemblies;

8. The decompression explosion-proof box according to any one of claims 1 to 7, wherein the box body is provided with at least one hook, the door panel is correspondingly provided with at least one hook, the hook is provided with a hook hole, and the hook is arranged in the hook hole to pre-mount the door panel and the box body.

9. The pressure relief explosion proof tank as claimed in any one of claims 1 to 7, further comprising a sealing strip disposed in said tank body and disposed adjacent to said opening, said sealing strip being located between said door panel and said tank body.

10. A current transformer, comprising:

the pressure relief explosion proof tank of any one of claims 1 to 9; and