Fire retardant device
By combining straight steel strips and oblique corrugated steel strips and optimizing the angle of the quenching channel, the problems of connection rigidity and extinguishing effect of the flame arrestor plate during the explosion of gas-solid mixtures were solved, achieving efficient discharge of solid-gas mixtures and system safety.
Patent Information
- Application Number
- CN202421838103.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-07-31
AI Technical Summary
Existing fire arrestor designs are ineffective at handling the gas-solid mixture generated during the explosion of new energy batteries, resulting in insufficient connection rigidity and strength, and solid particles are prone to clogging the quenching channels, affecting the fire extinguishing effect.
It adopts a combination design of straight steel strips and oblique corrugated steel strips, the support part has rounded corners, the quenching channel angle is controlled within -5°≤α≤5°, and it is equipped with isolation components to enhance connection rigidity and the ability to discharge solid-gas mixture.
The connection rigidity and strength of the flame arrestor have been improved, ensuring the rapid discharge of the solid-gas mixture and the fire extinguishing effect, preventing solid particles from sticking together in the channel, and ensuring system safety.
Smart Images
Figure CN223516847U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to fire damper technology field especially a fire damper. BACKGROUND
[0002] The fire damper plate of fire damper is usually rolled by two stainless steel strips, one straight corrugated steel strip and one flat smooth steel strip are rolled into a disc-shaped fire damper plate together, and the adjacent corrugated steel strip and flat steel strip form tens of thousands of small holes, when the flame passes through these through gaps, quenching effect is generated to achieve the purpose of extinguishing the flame, which is the commonly used corrugated plate type fire damper.
[0003] The pipeline and system of petrochemical industry are mostly pure gas, and the basic environment of combustion and explosion is gas mixture. With the development of new energy automobile and battery related industry, the battery explosion produces gas-solid mixture. The explosion of lithium battery is more acute and short, and the explosion of gas-solid mixture is an important feature different from pure gas explosion. The solid impurities such as electrolyte residue, electrode material, metal lithium and diaphragm fragment generated by thermal failure of lithium battery, instantaneous pressure increase and blockage lead to rapid expansion of pressure in closed space, further damage of battery pack structure and explosion, and the rigidity and strength of the connection of corrugated steel strip and straight steel strip of fire damper plate and the angle size of quenching channel need to be considered. SUMMARY
[0004] In view of the above existing new energy battery explosion different from pure gas explosion, the technical problem of acute and short explosion of solid-gas combination also needs to be considered, and the utility model is proposed.
[0005] The utility model aims at providing a fire damper, which aims to solve the problems of improving the rigidity and strength of the connection of corrugated steel strip and straight steel strip and extinguishing fire and discharging impurities when solid-gas mixture explodes.
[0006] To solve the above technical problems, the utility model provides the following technical scheme: a fire damper, which comprises a fire damper plate, the fire damper plate comprises a straight steel strip and an inclined corrugated steel strip, the straight steel strip and the inclined corrugated steel strip are attached, and a supporting part on the inclined corrugated steel strip is in contact with the straight steel strip.
[0007] As a preferred scheme of the fire damper of the utility model, the supporting angle of the supporting part is the included angle of the straight steel strip and the inclined corrugated steel strip.
[0008] As a preferred scheme of the fire damper of the utility model, the length of the connecting section on the supporting part is the interval length of the two side space M and N.
[0009] As a preferred scheme of the fire blocking device, the plurality of quenching channels are formed between the straight steel belt and the inclined corrugated steel belt, and an axial direction of the quenching channel is at an angle of a with the flame impact direction.
[0010] As a preferred scheme of the fire blocking device, the angle a is -5°≤a≤5°.
[0011] As a preferred scheme of the fire blocking device, the fire blocking device further comprises an isolation assembly, the isolation assembly comprises a separation net, the separation net is arranged on the side edge of the straight steel belt, the fire blocking disc and the isolation assembly are combined, and the number of the fire blocking discs is one more than that of the isolation assemblies.
[0012] As a preferred scheme of the fire blocking device, the isolation assembly is arranged between the two fire blocking discs.
[0013] As a preferred scheme of the fire blocking device, the separation net comprises a plurality of first metal wires and second metal wires which are perpendicular to each other.
[0014] As a preferred scheme of the fire blocking device, the first metal wire and the second metal wire are made of 316L or 316Ti stainless steel.
[0015] The fire blocking device has the advantages that the solid-gas mixture needs to be discharged and released instantaneously, the angle of the quenching channel formed between the straight steel belt and the inclined corrugated steel belt of the fire blocking device has better fire extinguishing effect, especially for the fire blocking disc with a thickness of greater than or equal to 20 mm, the low pressure drop is ensured, and the solid particles are prevented from being rubbed, adhered and stuck on the inner wall of the channel of the fire blocking disc, the arc-shaped support angle has greater friction and rigidity support, the strength and rigidity are good, and successful fire blocking is ensured. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor. Among them:
[0017] Fig. 1 It is a structure display drawing of the fire blocking device in the present application.
[0018] Fig. 2 It is a structure sectional view of the fire blocking disc in the present application.
[0019] Fig. 3The utility model discloses a structure display drawing of inclined corrugated steel belt and straight steel belt.
[0020] Fig. 4 The utility model discloses a partial enlarged view of the supporting part.
[0021] Fig. 5 The utility model discloses a structure display drawing of the separation net. DETAILED DESCRIPTION
[0022] In order to make the above object, features and advantages of the utility model more apparent, below, specific embodiment of the utility model is explained in detail with the drawings of the specification.
[0023] In the following description, a lot of specific details are set forth in order to fully understand the utility model, but the utility model can also be implemented in other ways different from the description, and the person skilled in the art can make similar extension without violating the connotation of the utility model, therefore, the utility model is not limited by the following disclosed specific embodiments.
[0024] Secondly, "one embodiment" or "embodiment" referred to here means that specific features, structures or characteristics can be contained in at least one implementation of the utility model. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, and is not an embodiment that is independent or selectively excluded from other embodiments.
[0025] Embodiment 1
[0026] Reference Figs. 1-4 For the first embodiment of the utility model, the embodiment provides a fire stopping device, including fire stopping disc 100, fire stopping disc 100 includes straight steel belt 101 and inclined corrugated steel belt 102, and straight steel belt 101 and inclined corrugated steel belt 102 are attached, and the supporting part 102a on the inclined corrugated steel belt 102 contacts with the straight steel belt 101.
[0027] Preferably, the supporting angle 102a-1 of the supporting part 102a is the included angle of the straight steel belt 101 and the inclined corrugated steel belt 102, and the supporting angle 102a-1 is a fillet with an arc, and the fire stopping and supporting effect of the fillet is better than that of the acute angle, and in the explosion of the gas-solid mixture, the solid particles are not easy to stick and jam on the inner wall in the fire stopping disc channel.
[0028] Preferably, the length of the connecting section 102a-2 on the supporting part 102a is the interval length of the two side configuration spaces M and N, and M and N are quenching channels, and the connecting section 102a-2 has better supporting effect when connecting the straight steel belt 101 and the inclined corrugated steel belt 102.
[0029] In use, the straight steel belt 101 and the inclined corrugated steel belt 102 are attached, the contact part of the inclined corrugated steel belt 102 and the straight steel belt 101 is a supporting part 102a, the supporting angle 102a-1 of the supporting part 102a is a round angle with an arc, the supporting angle 102a-1 is an included angle of the straight steel belt 101 and the inclined corrugated steel belt 102, the round angle supporting angle 102a-1 can bear stress and is not easy to deform compared to an acute angle at a bending part, the connecting section 102a-2 increases the contact area of the straight steel belt 101 and the inclined corrugated steel belt 102, improves the supporting effect, and further makes the straight steel belt 101 and the inclined corrugated steel belt 102 not easy to loosen, and the inclined corrugated steel belt 102 with the round angle supporting angle 102a-1 is more compact (radial direction), has greater friction and rigidity support (axial direction) when explosion impact, has better strength and rigidity, and ensures successful fire blocking.
[0030] Embodiment 2
[0031] With reference to Figs. 1-4 For the second embodiment of the utility model, different from the previous embodiment, a plurality of quenching channels 103 are formed between the straight steel belt 101 and the inclined corrugated steel belt 102, the axial direction of the quenching channel 103 and the flame impact direction form an angle α, the flame impact direction is parallel to the pipeline direction, when the supporting angle 102a-1 is too large, the same thickness fire blocking disc has a longer stroke (the hypotenuse of a triangle), the fire blocking effect is better for pure gas, but for gas-solid mixtures such as battery explosion, it is more likely to be blocked.
[0032] Further, the angle α is preferably -5°≤α≤5°, the gas-solid mixture produced by the battery explosion needs to be discharged and released instantaneously, when the included angle α is large, the direction of the quenching channel 103 and the movement direction of the explosion solid particles form a certain included angle, the solid particles are easy to stick and jam on the inner wall of the quenching channel 103 by friction, when the angle α is preferably -5°≤α≤5°, the near straight channel is more conducive to gas flow and impurity discharge, rapid pressure relief, fire blocking, and system safety.
[0033] In use, a plurality of quenching channels 103 are formed between the straight steel belt 101 and the inclined corrugated steel belt 102, the axial direction of the quenching channel 103 and the flame impact direction form an angle α, the angle α is preferably -5°≤α≤5°, at this time, the near straight channel is more conducive to gas flow and impurity discharge in the gas-solid mixture, rapid pressure relief and fire blocking, the thickness of the fire blocking disc is generally 10mm, 20mm, 30mm, and when the angle α is preferably -5°≤α≤5°, for the fire blocking disc with a thickness of ≥20mm, low pressure drop is ensured while avoiding solid particle friction sticking and jamming on the inner wall of the fire blocking disc channel.
[0034] Embodiment 3
[0035] With reference toFigs. 1-5 For the third embodiment of the utility model, different from the previous embodiment, it comprises an isolation assembly 200, the isolation assembly 200 comprises a separation net 201, the separation net 201 is arranged at the side edge of the straight steel belt 101, the fire barrier disc 100 is combined with the isolation assembly 200, the number of the fire barrier disc 100 is more than that of the isolation assembly 200 by one, that is, the fire barrier disc 100 is arranged at least one, at this time, the number of the isolation assembly 200 is 0, for some scenes, the single fire barrier disc 100 can also be used alone.
[0036] Further, the isolation assembly 200 is arranged between the two fire barrier discs 100, which is a preferred combination, that is, the arrangement order is fire barrier disc 100-isolation assembly 200-fire barrier disc 100, which can disperse the gas, so that the gas can be evenly distributed on the surface of the next fire barrier disc 100, preventing the sudden decrease of the cross-sectional area of the fire barrier disc 100 and increasing the resistance to the gas.
[0037] Preferably, the separation net 201 comprises a plurality of first metal wires 201a and second metal wires 201b perpendicular to each other, and a plurality of pressure relief holes for the flame to pass through are formed between the first metal wires 201a and the second metal wires 201b on the separation net 201.
[0038] Further, the first metal wire 201a and the second metal wire 201b are made of 316L or 316Ti stainless steel.
[0039] In use, the fire barrier disc 100 is combined with the isolation assembly 200, the number of the fire barrier disc 100 is more than that of the isolation assembly 200 by one, in a simple scene, only one fire barrier disc 100 can be arranged, and a preferred combination is arranged, that is, the arrangement order is fire barrier disc 100-isolation assembly 200-fire barrier disc 100, which can disperse the gas, so that the gas can be evenly distributed on the surface of the next fire barrier disc 100, preventing the sudden decrease of the cross-sectional area of the fire barrier disc 100 and increasing the resistance to the gas, and the first metal wire 201a and the second metal wire 201b are preferably made of 316L or 316Ti stainless steel, so that the strength of the fire barrier device is higher and deformation is less likely to occur.
[0040] It is important to note that the construction and arrangements of the application shown in the various exemplary embodiments are illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications can be made to the embodiments without departing from the novel teachings and advantages of the subject matter described herein. For example, elements described as integrated in a single unit can be separated, elements described as separate can be integrated, and the position, number, shape, and arrangements of elements can be varied. Accordingly, all such modifications are intended to be included within the scope of the present inventive subject matter. The order or sequence of any process or method steps can be varied or re-sequenced without departing from the general nature of the claims. Any "means plus function" clauses are intended to cover the structures described herein as performing the recited functionality and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions can be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present inventive subject matter. Accordingly, the present inventive subject matter is not limited to the particular embodiments described and illustrated herein, but extends to equivalents of which the foregoing describes are intended to cover.
[0041] Furthermore, in order to provide a concise description of the exemplary embodiments, not all features of an actual implementation can be described (i.e., those related to the
[0042] It is understood that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions can be made. Such development efforts can inevitably lead to modifications, which can be different from those suggested herein, and still fall within the scope of the present inventive subject matter. Those skilled in the art will appreciate the
[0043] It should be noted that the above examples are intended to illustrate the technical solutions of the present application but not limit the present application, and although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application, and all should be included in the scope of the claims of the present application.
Claims
1. A fire barrier comprising: Including, The fire damper (100) comprises a straight strip steel belt (101) and an inclined corrugated steel belt (102), the straight strip steel belt (101) and the inclined corrugated steel belt (102) are attached, a supporting part (102a) of the inclined corrugated steel belt (102) is in contact with the straight strip steel belt (101), a plurality of quenching channels (103) are formed between the straight strip steel belt (101) and the inclined corrugated steel belt (102), an axial direction of the quenching channel (103) is at an angle of α with a flame impact direction, and the angle α is -5°≤α≤5°.
2. A fire damper as claimed in claim 1, characterised in that: A supporting angle (102a-1) of the supporting part (102a) is an included angle of the straight strip steel belt (101) and the inclined corrugated steel belt (102).
3. A fire damper as claimed in claim 2, wherein: A length of a connecting section (102a-2) of the supporting part (102a) is a spacing length of two sides of a space M and N.
4. The firestop device of claim 1, wherein: Further comprising an isolation assembly (200), the isolation assembly (200) comprises a separation net (201), the separation net (201) is arranged on a side edge of the straight strip steel belt (101), the fire damper (100) and the isolation assembly (200) are combined, and the number of the fire dampers (100) is one more than the number of the isolation assemblies (200).
5. A fire damper as claimed in claim 4, wherein: The isolation assembly (200) is arranged between two spaced fire dampers (100).
6. A fire damper as claimed in claim 5, characterised in that: The separation net (201) comprises a plurality of first metal wires (201a) and second metal wires (201b) which are perpendicular to each other and cross.
7. A fire damper as claimed in claim 6, characterised in that: The first metal wire (201a) and the second metal wire (201b) are made of 316L or 316Ti stainless steel.