Anti-explosion enhanced box door of energy storage box

Abstract

The utility model relates to the technical field of energy storage antiknock, and provides an antiknock enhanced box door of an energy storage box. The door leaf comprises a door frame and a door plate, the door frame is rotationally arranged on the door frame, the door frame comprises a door body frame and a keel frame arranged in the door body frame, the door body frame is made of steel pipes, and the steel pipes are connected through full welding; the door plate and the door frame are connected through full welding, the door plate seals a hole structure of the door frame, and the hole structure is defined by a door body frame and a keel frame together. The lever type locking mechanism is arranged between the door leaf and the door frame; and the bolt type locking mechanism comprises two bolt assemblies. The explosion-proof performance of the box door of the energy storage box can be improved, the design defect that an existing box door is poor in bending resistance and shearing resistance is overcome, enough sealing performance can be kept when internal explosion occurs, and therefore safety of personnel outside the box is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage anti-explosion, in particular to an anti-explosion enhanced door for an energy storage box. Background Technique

[0002] At present, with the booming development of the clean energy related fields, the application of energy storage boxes is becoming more and more extensive. However, due to the imperfect battery technology at the present stage, dangerous situations such as fire and explosion may occur during the operation of the energy storage system, posing a threat to the lives and safety of the staff. How to improve the anti-explosion ability of the energy storage box and reduce the harm to the surrounding personnel when an explosion occurs is the key point in the safety design of the energy storage box.

[0003] At the present stage, the commonly used energy storage box design mainly refers to the shape and structure layout of a container. The external frame is composed of all-steel members welded together, and the outer wall panels mostly adopt corrugated plates and are welded to the external frame to form a closed structure. The existing door of the energy storage box is as Figure 1 shown. The existing door includes a door leaf 01 and a door frame 02. The door leaf 01 adopts a flat door, which is connected to the door frame 02 through a hinge. The door frame of the door leaf 01 is welded by steel pipes or channel steels. The door panel of the door leaf 01 adopts a corrugated plate and is welded to the door frame of the door leaf. A vertically arranged locking rod 03 is provided on the door leaf 01. There are cams 04 at both ends of the locking rod 03. After the locking rod 03 rotates, the cam 04 is embedded into the locking rod cam seat 05, thereby locking the door leaf 01. The advantages of this door design are simple structure, good sealing performance, convenient operation of opening and closing the door, and standard parts of the container can be directly used. However, the original intention of this design does not consider the explosion scenario, and its disadvantages are as follows: the anti-lateral force ability of the door panel of the door leaf is relatively low, and almost all of the bending caused by the explosion force is resisted by the door frame of the door leaf. The components of the door frame of the door leaf usually adopt small-sized steel pipes or channel steels, and they themselves do not have sufficient bending resistance. This leads to very large bending deformation or even failure of the door leaf 01 under the action of the explosion force, losing the sealing performance and being unable to separate the internal explosion from the outside; in addition, the end shape of the locking rod 03 is relatively complex, mainly playing the role of facilitating rotation and locking. Its shear resistance and tensile resistance are relatively poor, and it is extremely easy to break and damage under the action of the explosion shock, resulting in the door leaf 01 being unable to continue to close, and the shock wave spreading to the outside area of the box and posing a threat to the personnel.

[0004] The above two defects are due to the simple reference of the container-like structure in this design, ignoring the explosion situation that the energy storage box needs to face but the ordinary container does not need to consider. Therefore, it is necessary to introduce anti-explosion measures when designing the door of the energy storage box. Content of the Utility Model

[0005] In view of the above-mentioned disadvantages of the prior art, the technical problem to be solved by the present utility model is to provide an explosion-resistant enhanced door for an energy storage box, which can improve the explosion resistance of the door of the energy storage box, overcome the design defects of the existing door with poor bending and shear resistance, and enable it to maintain sufficient sealing performance during an internal explosion, thereby protecting the safety of personnel outside the box.

[0006] To solve the above technical problem, the present utility model provides an explosion-resistant enhanced door for an energy storage box, comprising:

[0007] A door frame;

[0008] A door leaf, the door leaf includes a door frame and a door panel. The door frame is rotatably arranged on the door frame. The door frame includes a door body frame and a dragon bone frame arranged inside the door body frame. The door body frame is made of steel pipes and the steel pipes are fully welded together; the dragon bone frame includes vertical steel keels and horizontal steel keels. The vertical steel keels are fully welded to the door body frame, and the horizontal steel keels are fully welded to the door body frame; the door panel is fully welded to the door frame and the door panel seals the hole structure of the door frame. The hole structure is jointly defined by the door body frame and the dragon bone frame;

[0009] A lever-type locking mechanism, which is arranged between the door leaf and the door frame;

[0010] A bolt-type locking mechanism, the bolt-type locking mechanism includes two bolt assemblies. One bolt assembly is used to lock the door leaf at the top of the door frame, and the other bolt assembly is used to lock the door leaf at the bottom of the door frame.

[0011] Further, the bolt assembly includes a lock rod slidably arranged up and down on the door leaf, a handle arranged at one end of the lock rod away from the door frame, and a fixed seat arranged on the door leaf. The fixed seat is used to vertically limit the handle after the lock rod is locked.

[0012] Further, the bolt assembly further includes a plurality of buckles aligned up and down. Some of the buckles are arranged on the door frame, and the remaining buckles are arranged on the door leaf; the lock rod is slidably arranged on the door leaf through the buckles.

[0013] Further, the lock rod is made of a solid steel rod or a hollow steel pipe.

[0014] Further, the number of the bolt-type locking mechanisms is two and they are arranged side by side along the width direction of the door leaf, and the lever-type locking mechanism is located between the two bolt-type locking mechanisms.

[0015] Further, the steel pipe is a rectangular pipe.

[0016] Further, the number of the vertical steel keels is at least one, and the number of the horizontal steel keels is multiple and they are parallel to each other in pairs.

[0017] Further, the keel frame is made of one of rectangular tubes, I-beams, and H-beams.

[0018] Further, the door panel is made of corrugated board or flat board, and the door panel is cut into plates to be embedded in the hole structure of the door frame or laid flat on one side of the door frame as a whole.

[0019] Further, the door frame, keel frame, door panel, and plug-in locking mechanism are respectively made of steel materials with different strength grades according to the preset strength requirements.

[0020] As described above, the explosion-resistant enhanced box door of the energy storage box of the present utility model has the following beneficial effects: Based on the structure of the existing box door, the explosion-resistant enhanced box door of the energy storage box of the present utility model has been optimized in design, that is, the door frame is made of steel pipes and the steel pipes are fully welded together, and a new keel frame is added. The keel frame is arranged inside the door frame and includes vertical steel keels and horizontal steel keels. The door panel and the door frame are fully welded together and the door panel seals the hole structure of the door frame. On the basis of the original lever-type locking mechanism, the plug-in locking mechanism includes two plug-in components, one of which is used to lock the door leaf at the top of the door frame, and the other is used to lock the door leaf at the bottom of the door frame. The purpose of this utility model is to enhance the overall bending resistance of the door leaf by moderately strengthening the door frame and adding vertical steel keels and horizontal steel keels, so as to avoid excessive bending deformation under the action of the explosion shock wave and prevent the shock wave from spreading outwards. In addition, by adding a plug-in locking mechanism to jointly resist the shear force at the locking position between the door frame and the door leaf with the lever-type locking mechanism, it makes up for the defect of poor shear resistance of the original lever-type locking mechanism in the original design without affecting the original design form and usage function. Therefore, the explosion-resistant enhanced box door of the energy storage box of the present utility model can improve the explosion-resistant performance of the box door of the energy storage box, overcome the design defects of poor bending and shear resistance of the existing box door, and enable it to maintain sufficient sealing performance during an internal explosion, thereby protecting the safety of personnel outside the box. Description of the Drawings

[0021] Figure 1 A schematic diagram showing a specific embodiment of the existing box door of the energy storage box in the prior art;

[0022] Figure 2 A schematic diagram showing a specific embodiment of the explosion-resistant enhanced box door of the energy storage box of the present utility model;

[0023] Figure 3 A displacement nephogram showing the finite element analysis result of the existing box door;

[0024] Figure 4 A displacement nephogram showing the finite element analysis result of the explosion-resistant enhanced box door;

[0025] Figure 5The displacement-time curve graph of the maximum displacement point showing the finite element analysis results of the explosion-proof enhanced box door.

[0026] Element label description

[0027] 1 Door frame

[0028] 2 Door leaf

[0029] 21 Door frame

[0030] 211 Door body frame

[0031] 212 Dragon skeleton

[0032] 212a Vertical steel keel

[0033] 212b Horizontal steel keel

[0034] 22 Door panel

[0035] 3 Lever-type locking mechanism

[0036] 4 Bolt-type locking mechanism

[0037] 41 Bolt assembly

[0038] 411 Lock rod

[0039] 412 Handle

[0040] 413 Fixed seat

[0041] 414 Socket Specific implementation manner

[0042] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0043] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical essential significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" used in this specification are only for the convenience of clear description and are not used to limit the scope of implementation of the present invention. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope of implementation of the present invention.

[0044] Such asFigure 2 As shown in the figure, the present utility model provides an explosion-resistant enhanced box door for an energy storage box, comprising:

[0045] A door frame 1;

[0046] A door leaf 2, the door leaf 2 includes a door frame 21 and a door panel 22. The door frame 21 is rotatably arranged on the door frame 1. The door frame 21 includes a door body frame 211 and a keel frame 212 arranged inside the door body frame 211. The door body frame 211 is made of steel pipes and the steel pipes are fully welded together; the keel frame 212 includes vertical steel keels 212a and horizontal steel keels 212b. The vertical steel keels 212a are fully welded to the door body frame 211, and the horizontal steel keels 212b are fully welded to the door body frame 211; the door panel 22 is fully welded to the door frame 21 and the door panel 22 seals the hole structure of the door frame 21. The hole structure is jointly defined by the door body frame 211 and the keel frame 212;

[0047] A lever-type locking mechanism 3, the lever-type locking mechanism 3 is arranged between the door leaf 2 and the door frame 1;

[0048] A bolt-type locking mechanism 4, the bolt-type locking mechanism 4 includes two bolt assemblies 41. One bolt assembly 41 is used to lock the door leaf 2 to the top of the door frame 1, and the other bolt assembly 41 is used to lock the door leaf 2 to the bottom of the door frame 1.

[0049] Based on the structure of the existing box door, the explosion-resistant enhanced box door of the energy storage box of the present utility model has been optimized. That is, the door body frame 211 is made of steel pipes and the steel pipes are fully welded together, and a new keel frame 212 is added. The keel frame 212 is arranged inside the door body frame 211. The keel frame 212 includes vertical steel keels 212a and horizontal steel keels 212b. The door panel 22 is fully welded to the door frame 21 and the door panel 22 seals the hole structure of the door frame 21. On the basis of the original lever-type locking mechanism 3 (the original lever-type locking mechanism 3 is an existing structure and will not be elaborated here), the bolt-type locking mechanism 4 includes two bolt assemblies 41. One bolt assembly 41 is used to lock the door leaf 2 to the top of the door frame 1, and the other bolt assembly 41 is used to lock the door leaf 2 to the bottom of the door frame 1.

[0050] The purpose of this utility model is to moderately strengthen the door frame 21 and add vertical steel keels 212a and horizontal steel keels 212b to enhance the overall bending resistance of the door leaf 2 and prevent excessive bending deformation under the action of explosion shock waves, resulting in the outward diffusion of shock waves. In addition, by adding the bolt-type locking mechanism 4, it jointly resists the shear force at the locking position between the door frame 1 and the door leaf 2 with the lever-type locking mechanism 3, making up for the defect of the poor shear resistance of the original lever-type locking mechanism 3 in the original design, and will not affect the original design form and use function.

[0051] Therefore, the explosion-resistant enhanced door of the energy storage box of the present utility model can improve the explosion-resistant performance of the door of the energy storage box, overcome the design defects of the existing door with poor bending and shear resistance, and enable it to maintain sufficient sealing during internal explosion, thereby protecting the safety of personnel outside the box.

[0052] Further, in order to simplify the structure of the bolt assembly 41, the bolt assembly 41 includes a locking rod 411 slidably arranged up and down on the door leaf 2, a handle 412 arranged at one end of the locking rod 411 away from the door frame 1, and a fixed seat 413 arranged on the door leaf 2. The fixed seat 413 is used to vertically limit the handle 412 after the locking rod 411 is locked.

[0053] Further, the bolt assembly 41 further includes a plurality of socket buttons 414 aligned up and down. A part of the socket buttons 414 are arranged on the door frame 1, and the remaining socket buttons 414 are arranged on the door leaf 2. The locking rod 411 is slidably arranged on the door leaf 2 through the socket buttons 414. For example, one socket button 414 is arranged on the door frame 1, and two socket buttons 414 are arranged on the door leaf 2. When the locking rod 411 needs to lock the door leaf 2, the locking rod 411 passes through the three socket buttons 414 at the same time. Further, the socket buttons can be arranged on the door frame 1, the door body frame 211 and the keel frame 212, and welding connection or bolt connection can be adopted.

[0054] Further, according to different requirements for the shear force at the locking position between the door frame 1 and the door leaf 2, the locking rod 411 is made of a solid steel rod or a hollow steel pipe.

[0055] Further, in order to improve the co-resistance to the shear force at the locking position between the door frame 1 and the door leaf 2, the number of the bolt-type locking mechanisms 4 is two and they are arranged side by side along the width direction of the door leaf 2, and the lever-type locking mechanism 3 is located between the two bolt-type locking mechanisms 4.

[0056] Further, the steel pipe is a rectangular pipe (a square pipe is a special form of a rectangular pipe).

[0057] Further, since the height of the door leaf 2 is greater than the width of the door leaf 2, the number of the vertical steel keels 212a is at least one, and the number of the horizontal steel keels 212b is multiple and they are parallel to each other in pairs.

[0058] Further, in order to improve the bending resistance of the keel frame 212, the keel frame 212 is made of one of a rectangular pipe, an I-beam and an H-beam.

[0059] Further, the door panel 22 is made of a corrugated plate or a flat plate, and the door panel 22 is cut into plates to be embedded in the hole structure of the door frame 21 or laid flat on one side of the door frame 21 as a whole.

[0060] Further, in order to reduce the manufacturing cost, the door frame 211, the keel frame 212, the door panel 22, and the bolt - type locking mechanism 4 are respectively made of steel materials with different strength grades according to the preset strength requirements.

[0061] Specifically, the present utility model also provides an anti - explosion design method for the anti - explosion enhanced box door of an energy storage box, including the following steps:

[0062] S1. According to the anti - explosion capacity requirements, the structural dimensions of the box door, and the expected internal explosion shock wave over - pressure load, determine the member dimensions of the door frame 211, the vertical steel keel 212a, and the horizontal steel keel 212b; The finite element method can be used for trial calculation, or the single - degree - of - freedom dynamic analysis can be used for trial calculation to obtain the maximum deformation and permanent deformation of the designed box door under the action of the shock wave load, and the qualified standard is that the airtightness requirement can be met and the shock wave will not spread outwards.

[0063] S2. Calculate the shear force at the locking position between the door frame 1 and the door leaf 2 of the box door, and determine the number and cross - sectional area of the added bolt - type locking mechanism 4 according to the magnitude of the shear force; This step can also use the finite element method for trial calculation or the single - degree - of - freedom dynamic analysis for trial calculation to obtain the response of the bolt - type locking mechanism 4 under the action of the shock wave load, and the qualified standard is that no material shear failure occurs.

[0064] S3. According to the member dimensions calculated in the above steps, reasonably arrange the positions of the steel keel 212a, the horizontal steel keel 212b, the lock rod, the socket, and the fixing seat;

[0065] S4. According to the actual construction conditions, determine the installation method of the door panel and the installation method of the socket. Specific embodiment:

[0067] There is an existing box door of a traditional battery energy storage box. This existing box door is of the double - leaf door form, with a single - leaf door size of 2423 * 1348 mm, connected to the column of the door frame through hinges. The door panel of the door leaf is a corrugated board, and it has a single - lever lock rod. After measurement by the owner, an internal explosion may occur in this energy storage box, and the equivalent reflected over - pressure of the load in the form of an equilateral triangle shock wave can reach 40 kPa, with a duration of 100 ms. Through finite - element method modeling and analysis and calculation, the box door structure shows serious deformation under the action of the target explosion load, the lock rod breaks, and the box door cannot remain closed, which may pose a threat to external personnel; The displacement nephogram of the finite - element analysis result of the existing box door is as Figure 3 shown.

[0068] Now, the anti-explosion design method of the present utility model is adopted to improve the anti-explosion ability of the structure of the existing box door. The specific measures are as follows: First, make the door frame 21. The crossbeam of the door body frame 211 uses rectangular steel pipes (the existing box door uses channel steel), and the cross-sectional dimensions of the rectangular steel pipe are 150*80*4 mm (the parameters represent length, width, and thickness); Second, add a vertical steel keel 212a in the middle position of the door body frame 211. The upper and lower ends of the vertical steel keel 212a are welded to the crossbeam of the door body frame 211, and the cross-sectional dimensions of the vertical steel keel 212a are 80*60*5 mm; Third, add two horizontal steel keels 212b in the middle position of the door frame. The left and right ends are welded to the columns of the door body frame 211. The distance between the two horizontal steel keels 212b is 280 mm, and the cross-sectional dimensions of the horizontal steel keel 212b are 80*60*5 mm; Fourth, the door panel 22 uses the corrugated board with a thickness of 2 mm in the original design, and is inserted into the vacancy between the door body frame 211 and the keel frame 212 and welded to the door body frame 211 and the keel frame 212; Fifth, add bolt assemblies 41 at the upper and lower parts respectively, close to the vertical steel keel 212a and the outer column of the door body frame 211. The lock rod 411 is a hollow steel pipe, the diameter of the hollow steel pipe is 27 mm, and the thickness is 7 mm; Sixth, slightly adjust the original lever-type locking mechanism 3 and place it between the two bolt-type locking mechanisms 4; Seventh, set socket joints at the contact positions of the crossbeam of the door body frame 211, the crossbeam of the door frame, the horizontal steel keel 212b and the lock rod of the lever-type locking mechanism 3 respectively, for horizontally limiting the lock rod of the lever-type locking mechanism 3. The thickness of the socket joint is 8 mm and is welded to the corresponding component; Set fixing seats on the columns of the door body frame 211 and the vertical steel keel 212a respectively, for vertical limiting of the bolt-type locking mechanism 4 after locking. The thickness of the fixing seat is 8 mm and is welded to the corresponding component. All structural components use Q235B steel, with a yield strength of 235 MPa, a tensile strength of 370 MPa, an elastic modulus of 210 GPa, and a Poisson's ratio of 0.3.

[0069] Establish a finite element model according to the anti-explosion design method, and simplify the handles and fixing seats that do not affect the anti-explosion strength. The calculation results show that, as Figure 4 and Figure 5 shown, under the action of the target explosion load, the anti-explosion enhanced box door after anti-explosion retrofit design does not show obvious deformation, the maximum displacement is 68.7 mm, and it gradually recovers as the load action ends, and the permanent deformation is about 43 mm. The lock rod does not break and fail, and the box door can remain closed and will not pose a threat to external personnel.

[0070] In summary, the blast-resistant enhanced door of the energy storage box of the present utility model can improve the blast resistance of the door of the energy storage box, overcome the design defects of the existing door with poor bending and shear resistance, and enable it to maintain sufficient sealing performance during internal explosion, thereby protecting the safety of personnel outside the box. Therefore, the present utility model effectively overcomes various disadvantages in the prior art and has high industrial utilization value.

[0071] The above embodiments are only illustrative of the principles and effects of the present utility model and are not intended to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. An explosion-proof enhanced box door of an energy storage box, characterized in that: include: Door frame (1); A door leaf (2), the door leaf (2) comprising a door frame (21) and a door panel (22), the door frame (21) being rotatably arranged on a door frame (1), the door frame (21) comprising a door frame (211) and a keel frame (212) arranged in the door frame (211), the door frame (211) being made of steel pipes and the steel pipes being fully welded; the keel frame (212) comprising a vertical steel keel (212a) and a horizontal steel keel (212b), the vertical steel keel (212a) and the door frame (211) being fully welded, and the horizontal steel keel (212b) and the door frame (211) being fully welded; the door panel (22) and the door frame (21) being fully welded, and the door panel (22) sealing a hole structure of the door frame (21), the hole structure being defined by the door frame (211) and the keel frame (212); A lever-type locking mechanism (3), wherein the lever-type locking mechanism (3) is arranged between the door leaf (2) and the door frame (1); A latch-type locking mechanism (4) comprises two latch assemblies (41), wherein one latch assembly (41) is used to lock a door leaf (2) at the top of a door frame (1), and the other latch assembly (41) is used to lock the door leaf (2) at the bottom of the door frame (1).

2. The explosion-resistant enhanced box door of the energy storage box according to claim 1, characterized in that: The latch assembly (41) comprises a locking rod (411) slidably arranged on the door leaf (2) up and down, a handle (412) arranged at an end of the locking rod (411) away from the door frame (1), and a fixing seat (413) arranged on the door leaf (2), wherein the fixing seat (413) is used to vertically limit the handle (412) after the locking rod (411) is locked.

3. The explosion-proof enhanced box door of the energy storage box according to claim 2 is characterized in that: The latch assembly (41) further comprises a plurality of buckles (414) aligned vertically, wherein a portion of the buckles (414) are arranged on the door frame (1) and the remaining buckles (414) are arranged on the door leaf (2); the locking rod (411) is arranged on the door leaf (2) by means of the buckles (414) so ​​as to slide up and down.

4. The explosion-resistant enhanced box door of the energy storage box according to claim 2, characterized in that: The locking rod (411) is made of a solid steel rod or a hollow steel pipe.

5. The explosion-resistant enhanced box door of the energy storage box according to claim 1, characterized in that: The number of the latch-type locking mechanisms (4) is two and they are arranged side by side along the width direction of the door leaf (2), and the lever-type locking mechanism (3) is located between the two latch-type locking mechanisms (4).

6. The explosion-resistant enhanced box door of the energy storage box according to claim 1, characterized in that: The steel pipe is a rectangular pipe.

7. The explosion-resistant enhanced box door of the energy storage box according to claim 1, characterized in that: The number of the vertical steel keels (212a) is at least one, and the number of the transverse steel keels (212b) is multiple and two of them are parallel.

8. The explosion-resistant enhanced box door of the energy storage box according to claim 1, characterized in that: The keel frame (212) is made of one of a rectangular tube, an I-beam and an H-beam.

9. The explosion-resistant enhanced box door of the energy storage box according to claim 1, characterized in that: The door panel (22) is made of a corrugated board or a flat board, and the door panel (22) is cut into panels to be embedded in the hole structure of the door frame (21) or laid flat on one side of the door frame (21) as a whole.

10. The explosion-proof enhanced box door of the energy storage box according to claim 1, characterized in that: The door body frame (211), the keel frame (212), the door panel (22) and the latch-type locking mechanism (4) are respectively made of steel materials of different strength grades according to preset strength requirements.

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