Explosion-proof energy storage cabin and ventilation and pressure relief method

Abstract

The explosion-proof energy storage cabin comprises a cabin body, fans are arranged on the two oppositely-arranged side cabin walls of the cabin body, non-return mechanisms are arranged on the inner sides of the fans so that airflow can only flow into the cabin body through the fans, a plurality of pressure relief pipes are arranged on the upper surface of the top cabin wall of the cabin body, the pressure relief pipes communicate with the internal space of the cabin body, and the pressure relief pipes communicate with the internal space of the cabin body. The top ends of the pressure relief pipes are rotationally connected with top covers, the multiple pressure relief pipes further communicate with at least one bent pipe, the bent pipes serve as ventilation pipes, the air inlet ends of the bent pipes communicate with the inner spaces of the pressure relief pipes and are rotationally connected with baffles, and the air outlet ends of the bent pipes face the top bin wall of the top bin body. When a fire disaster or explosion occurs, surrounding property and personnel are not damaged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage cabin, in particular to an explosion-proof energy storage cabin and a ventilation and pressure relief method. BACKGROUND

[0002] The statements herein merely provide background technology related to the present application, and do not necessarily constitute prior art.

[0003] As a key equipment for energy storage, the safety of the energy storage cabin is crucial. The traditional fireproof and explosion-proof measures, such as gas fire extinguishing, water fire extinguishing, fine water mist fire extinguishing and liquid nitrogen fire extinguishing, etc., are not ideal when facing the internal fire of the energy storage cabin. When a fire occurs, the flame is easy to spread to the surrounding, which is easy to cause a chain reaction, and then causes a fire explosion accident, resulting in serious property loss and personnel casualties. Therefore, it is of great significance to prevent the explosion of the energy storage cabin and the spread of the flame to the surrounding when a fire occurs. SUMMARY

[0004] In view of the deficiencies of the prior art, the purpose of the present application is to provide an energy storage cabin and a ventilation and pressure relief method, which can prevent the flame from spreading to the surrounding and causing property loss and personnel casualties around the energy storage cabin when a fire occurs in the energy storage cabin.

[0005] In order to achieve the above-mentioned purpose, the present application is realized by the following technical scheme: In a first aspect, the embodiments of the present application provide an explosion-proof energy storage cabin, comprising a cabin body, two opposite side walls of the cabin body are provided with fans, a check valve mechanism is arranged inside the fan to make the airflow flow only from the fan to the inside of the cabin body, a plurality of pressure relief pipes are arranged on the upper surface of the top wall of the cabin body, the pressure relief pipes are communicated with the inside space of the cabin body, a top cover is rotatably connected to the top end of the pressure relief pipe, and at least one elbow pipe is further communicated with the plurality of pressure relief pipes, the elbow pipe serves as a ventilation pipe, the air inlet end of the elbow pipe is communicated with the inside space of the pressure relief pipe, and a baffle is rotatably connected to the air inlet end of the elbow pipe, and the air outlet end of the elbow pipe is arranged towards the top wall of the top part of the cabin body.

[0006] Optionally, the air inlet end of the elbow pipe is rotatably connected to the baffle through a rotating shaft, and a set friction force is arranged between the baffle and the rotating shaft to make the baffle rotate around the rotating shaft only under the action of a load greater than the set friction force.

[0007] Optionally, a plurality of elbow pipes are connected to the pressure relief pipe, and the plurality of elbow pipes are equally spaced along the circumferential direction of the pressure relief pipe.

[0008] Optionally, the elbow pipe comprises a first elbow pipe section and a second elbow pipe section, the first elbow pipe section is fixedly connected to the pressure relief pipe, and the second elbow pipe section is detachably fixedly connected to the air outlet end of the first elbow pipe section, and the second elbow pipe section is bent towards the top wall of the cabin body to make the air outlet end of the second elbow pipe section arranged towards the top wall of the cabin body.

[0009] Optionally, the open end of the pressure relief pipe is provided with oppositely arranged rotary connecting seats and a protrusion, the rotary connecting seats are provided with long holes distributed along the axial direction of the pressure relief pipe, one end of the cover is provided with two connecting ear plates, the rotary connecting seats extend into the two connecting ear plates, the rotary connecting seats are connected with the connecting ear plates through the pin shafts penetrating through the long holes and the two connecting ear plates, and the other end of the cover is provided with a sliding groove component matched with the protrusion.

[0010] Optionally, the cover comprises a cover plate, and the edge of the cover plate is provided with an inner ring plate and an outer ring plate, and a space for inserting the open end of the pressure relief pipe is formed between the inner ring plate and the outer ring plate.

[0011] Optionally, the plurality of pressure relief pipes are arranged in an array on the top bulkhead of the cabin.

[0012] Optionally, the non-return mechanism comprises a reverse flow protection cover fixed to the inner side surface of the side bulkhead of the cabin, a plurality of ventilation holes are arranged in an array on the reverse flow protection cover, a hinged seat is arranged above each ventilation hole, the hinged seat is fixed to the side surface of the reverse flow protection cover facing the interior of the cabin, one end of the non-return flap is rotationally connected with the hinged seat, and the non-return flap is matched with the ventilation hole so that the rotation of the non-return flap can switch the ventilation hole between the open and closed states.

[0013] Optionally, the inner side surface of the bulkhead of the cabin is covered with a layer of fireproof material, and the water and electricity through-wall hole of the cabin is arranged at the bottom of the side bulkhead of the cabin and is sealed by the fireproof and explosion-proof mud.

[0014] In the second aspect, the embodiments of the present application provide a ventilation and pressure relief method for the explosion-proof energy storage cabin. In the normal working state, the fan works, air is introduced into the cabin through the non-return mechanism, the air enters the pressure relief pipe, and the force of the air on the cover and the baffle cannot drive the cover and the baffle to move, and the air flows out through the elbow pipe; When a fire occurs, the pressure in the cabin increases, the non-return mechanism is closed, and high-temperature gas is prevented from being sprayed from the side of the energy storage cabin to the outside of the energy storage cabin, at the same time, the high-temperature gas in the energy storage cabin enters the pressure relief pipe, under the action of the high-temperature gas, the baffle at the inlet end of the elbow pipe rotates to close the elbow pipe, and at the same time, the cover rotates to open under the action of the high-temperature gas, thereby achieving the pressure relief of the cabin.

[0015] The present application has the following advantages: 1.The explosion-proof energy storage cabin and ventilation and pressure relief method of the present application, the side wall of the cabin body is provided with a check mechanism, the check mechanism allows airflow to flow from the fan to the inside of the cabin body, and under the action of high-temperature gas, the check mechanism quickly closes to control the fire in the cabin body, avoiding the spread of flames and the loss of property and personnel casualties around the energy storage cabin when the fire occurs, and at the same time, under normal working conditions, the baffle at the intake end of the elbow pipe will not close under the action of wind force, and the outflow function can be realized, so as to cooperate with the check mechanism and the fan to realize the ventilation of the energy storage cabin, the outflow end of the elbow pipe is arranged towards the top wall to avoid the entry of external rainwater into the energy storage cabin to corrode the equipment in the energy storage cabin, and through the arrangement of the baffle at the intake end of the elbow pipe, the intake end of the elbow pipe can be opened under normal working conditions and closed under fire conditions, avoiding the damage of high-temperature gas and flame flowing out of the outflow end of the elbow pipe to the top wall of the cabin body, and under fire conditions, the top cover can be opened by high-temperature gas to realize the pressure relief in the cabin body, and the high-temperature gas, flame and the like are sprayed upwards through the pressure relief pipe, which will not cause harm to the surrounding property and personnel, and ensure that the flame will not cause greater fire or explosion during the dredging process.

[0016] 2.The explosion-proof energy storage cabin and ventilation and pressure relief method of the present application, the top end of the pressure relief pipe is provided with a rotating connecting seat and a protruding block, the rotating connecting seat is provided with a long slot, and the open end of the pressure relief pipe is inserted into the space between the inner ring plate and the outer ring plate, and through this arrangement, the top cover will be lifted to a certain height before being opened by the internal gas pressure of the pressure relief pipe, avoiding the self-opening of the top cover caused by bumps during transportation, and at the same time, a seal is formed between the pressure relief pipe and the inner ring plate and the outer ring plate to prevent rainwater from entering the pressure relief pipe. BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the specification of the present application, explain the present application, and do not constitute an improper limitation of the present application.

[0018] Figure 1 is a schematic diagram of the overall structure of embodiment 1 of the present application; Figure 2 is a schematic diagram of the check mechanism of embodiment 1 of the present application; Figure 3 is an assembly drawing of the check mechanism, the fan, the fan mounting cover and the cabin body of embodiment 1 of the present application; Figure 4 is a schematic diagram of the check piece structure of embodiment 1 of the present application; Figure 5 is a schematic diagram of the structure of the pressure relief pipe under the closed state of embodiment 1 of the present application; Figure 6 is a schematic diagram of the structure of the pressure relief pipe under the open state of embodiment 1 of the present application; Figure 7This is a schematic diagram of the pin structure in Embodiment 1 of the present invention; Figure 8 This is a schematic diagram of the pressure relief pipe with bend in the closed state according to Embodiment 1 of the present invention; Figure 9 This is a schematic diagram of the pressure relief pipe with bend in the open state of Embodiment 1 of the present invention; Figure 10 This is a cross-sectional view of the pressure relief pipe with a bend in Embodiment 1 of the present invention; Figure 11 This is a schematic diagram of the assembly of the first bend section and the pressure relief pipe in Embodiment 1 of the present invention. Figure 1 ; Figure 12 This is a schematic diagram of the assembly of the first bend section and the pressure relief pipe in Embodiment 1 of the present invention. Figure 2 ; Figure 13 This is a schematic diagram of the second bend section structure in Embodiment 1 of the present invention; Figure 14 This is a schematic diagram of the baffle structure in Embodiment 1 of the present invention; Among them, 1. cabin, 2. fan, 3. fan mounting cover, 4. backflow protection cover, 5. ventilation hole, 6. hinge seat, 7. check plate, 8. pressure relief pipe, 9. top cover, 10. rotating connection seat, 11. protrusion, 12. elongated hole, 13. connecting ear plate, 14. sliding groove component, 15. pin, 16. bend, 17. baffle; 9-1. Cover plate; 9-2. Outer ring plate; 9-3. Inner ring plate; 16-1. First bend section, 16-2. Second bend section. Detailed Implementation

[0019] Example 1 This embodiment provides an explosion-proof energy storage compartment, such as Figure 1 As shown, the device includes a cabin 1, which can adopt the existing explosion-proof cabin structure, including side bulkheads, top bulkheads, and bottom bulkheads, as well as a door. In this embodiment, all inner surfaces of the bulkheads are covered with a fireproof layer. The fireproof layer is constructed of Class A fireproof material, which has excellent fire resistance and heat insulation performance. It can effectively prevent flames from damaging the cabin structure, prevent disordered combustion and explosion of flames, and at the same time, it can effectively protect the pressure inside the energy storage cabin from leaking out and causing injury to surrounding personnel and objects.

[0020] In addition to being protected by fire-resistant materials, the hatch itself also has a certain strength and sealing to prevent high-pressure gas from damaging the door panel. The hatch is made of high-strength materials, which can be made of existing materials and will not be described in detail here. The hatch edge is equipped with a sealing strip to achieve a seal.

[0021] The cabin 1 is also provided with water and electricity through-wall holes, which are located at the lower part of the side cabin wall and are sealed with fire-resistant and explosion-proof mud between them and the pipelines.

[0022] Inside the cabin, such as Figures 2-4 As shown, fans 2 are provided at the bottom of the two oppositely arranged side bulkheads. In this embodiment, the fans are installed on the fan mounting cover 3. The fan mounting cover 3 protrudes outward from the side bulkhead. The edge of the fan mounting cover 3 is provided with a flange. It is fixed to the side bulkhead by the flange and multiple bolts. The fans 2 are installed inside the fan mounting cover 3. The outer side of the fan mounting cover 3 is a grid structure for air intake.

[0023] To prevent flames and high-temperature air from being ejected from the fan through the side wall in the event of a fire in the energy storage compartment, thus causing damage to the fan and the property and personnel around the energy storage compartment, a backflow prevention mechanism is provided on the inner side of the fan, which is installed on the inner side of the side wall.

[0024] The check valve mechanism only allows airflow to flow from the outside of the compartment into the compartment via the fan, while preventing the airflow from flowing in the opposite direction. Therefore, in the event of a fire inside the energy storage compartment, flames and high-temperature gases cannot flow out through the check valve mechanism.

[0025] The backflow prevention mechanism includes a backflow protection cover 4, which is positioned corresponding to the position of the fan 2. The backflow protection cover 4 protrudes from the side wall towards the interior of the cabin 1. A flange is provided at the edge of the backflow protection cover 4, and the flange is fixed to the inner side of the side wall by multiple bolts.

[0026] The backflow protection cover 4 has multiple ventilation holes 5 on its wall parallel to the side bulkhead. The multiple ventilation holes 5 are arranged in an array. In this embodiment, the array range of the multiple ventilation holes 5 covers the wall of the backflow protection cover 4 parallel to the side bulkhead.

[0027] In this embodiment, the ventilation hole 5 is a circular hole. In other embodiments, the ventilation hole 5 may also be a square hole or a hole of other shapes.

[0028] Each ventilation hole of the counterflow ventilation hood 4 is provided with a hinge seat 6 above it. The hinge seat 6 is fixed to the surface of the hood wall that is parallel to the side wall and close to the interior of the cabin 1.

[0029] Each hinge seat 6 is rotatably connected to the upper end of the check plate 7. The shape of the check plate 7 matches that of the ventilation hole 5, and its area is larger than that of the ventilation hole 5. The rotation of the check plate can switch the ventilation hole 5 between open and closed states.

[0030] Specifically, the upper end of the check plate 7 is provided with a connecting ring. The check plate 7 is rotatably connected to the hinge seat through the connecting ring and the pin on the hinge seat 6, so that the check plate 7 can move flexibly.

[0031] With this configuration, the check valve 7 can only open towards the interior of the cabin 1, thus achieving unidirectional airflow.

[0032] The ventilation holes 5 and the check plate 7 are arranged in an array, which effectively enhances the resistance to pressure and impact, ensuring both normal ventilation and sufficient check strength.

[0033] When the fan 2 is turned on, the airflow can easily blow the check plate 7, and the check plate 7 flips to open the ventilation hole 5, keeping the ventilation inside the chamber 1 smooth.

[0034] When a high-pressure explosion occurs inside the energy storage compartment, the resulting high-temperature gas flow acts on the check valve 7. The check valve 7 immediately covers the corresponding ventilation hole 5, preventing the backflow of high-temperature gas and flames, avoiding ignition of objects outside the energy storage compartment, and protecting the safety of personnel and property around the energy storage compartment.

[0035] The top surface of the cabin wall is equipped with multiple pressure relief pipes 8, which are used to discharge high-temperature gas and flames generated during an explosion in the energy storage cabin, thereby achieving pressure relief inside the energy storage cabin.

[0036] In this embodiment, as Figures 5-7 As shown, the pressure relief pipe 8 is a cylindrical pipe, preferably with an inner diameter of 300mm. A top cover 9 is provided at the top of the pressure relief pipe. The axis of the pressure relief pipe 8 is perpendicular to the top wall of the compartment, which can guide the flames upwards in the event of a fire, ensuring that the flames do not cause a larger fire or explosion during the evacuation process. This design serves two purposes: first, it allows the top cover 9 to obtain a sufficiently effective area, enabling it to obtain opening pressure as early as possible when the pressure inside the compartment rises; second, once the top cover 9 is opened, it provides sufficient fire-guiding area, preventing explosions or compartment deformation due to insufficient pressure relief area after thermal runaway of a large-capacity battery.

[0037] In this embodiment, multiple pressure relief pipes 8 are arranged in an array on the upper surface of the top bulkhead. The number of pressure relief pipes 8 installed can be determined according to the energy storage capacity, the flame generation speed of different battery types, and the pressure release requirements inside the chamber, which will not be described in detail here.

[0038] The top open end of the pressure relief pipe 8 is provided with a top cover 9, which is buckled on the open end of the pressure relief pipe 8. In the normal working state, the top cover 9 seals the open end of the pressure relief pipe. In the embodiment, the top cover 9 is supported by high-temperature-resistant material to prevent it from being burned or deformed in a fire. The top cover 9 includes a cover plate 9-1, which is provided with an outer ring plate 9-2 and an inner ring plate 9-3 at the edge. The inner diameter of the outer ring plate 9-2 matches the outer diameter of the pressure relief pipe 8, and the outer diameter of the inner ring plate 9-3 matches the inner diameter of the pressure relief pipe 8. When the top cover 9 is buckled on the pressure relief pipe 8, the open end of the pressure relief pipe 8 can be inserted into the space between the inner ring plate 9-3 and the outer ring plate 9-2 to form a sealed barrier. In order to further improve the sealing effect, grease seals are provided between the inner ring plate 9-3, the outer ring plate 9-2 and the open end of the pressure relief pipe 8.

[0039] With this arrangement, the top cover 9 can be prevented from opening automatically during transportation of the energy storage cabin due to bumps on the road, and rainwater can also be prevented from entering, thereby better protecting the battery pack in the energy storage cabin.

[0040] The outer surface of the open end of the pressure relief pipe 8 is provided with a rotationally connected seat 10 and a protrusion 11 arranged oppositely, i.e., the rotationally connected seat 10 and the protrusion 11 are arranged at an interval of 180°.

[0041] The protrusion 11 is a long strip arranged along the axial direction of the pressure relief pipe. The rotationally connected seat 10 is provided with a long slot 12 arranged along the axial direction of the pressure relief pipe 8.

[0042] One end of the top cover 9 is provided with two connecting lugs 13, and the other end is provided with a sliding groove component 14. The two connecting lugs 13 and the sliding groove component 14 are arranged at an interval of 180°. The sliding groove component 14 is formed by bending the outer ring plate 9-2 outward. The protrusion 11 can be embedded in the sliding groove component 14 and is in sliding connection with the sliding groove component 14.

[0043] The connecting lugs 13 are fixedly connected to the outer side of the outer ring plate 9-2. A pin shaft 15 is provided between the two connecting lugs 13 and passes through the rotationally connected seat 10 through the long slot 12, thereby realizing the connection between the top cover 9 and the pressure relief pipe 8. Through the pin shaft 15 and the long slot 12, it can be ensured that the top cover 9 turns to one side when exploding, so as not to fly to high altitude and fall to the ground to injure people.

[0044] In the normal working state, the top cover 9 is buckled on the open end of the pressure relief pipe 8, the open end of the pressure relief pipe 8 is inserted into the space between the inner ring plate 9-3 and the outer ring plate 9-2, the pin shaft 15 is located at the bottom of the long slot 12, and the protrusion 11 is embedded in the sliding groove component 14.

[0045] When a fire or explosion occurs in the energy storage cabin, the pressure generated by the high-temperature gas on the top cover 9 will push the top cover 9 to move upward, the pin shaft 15 moves upward along the long hole 12, the protruding block 11 slides along the sliding groove component 14, and after the pin shaft 15 moves to the top end of the long hole 12, under the action of the high-temperature gas pressure, the top cover 9 flips outward to open the open end of the pressure relief pipe 8, increases the exhaust area, and the pressure relief pipe 8 discharges the flame or high-temperature toxic gas in the energy storage cabin to prevent explosion accidents.

[0046] The condition for opening the top cover at the top of the pressure relief pipe 8 is: P_box>P_open>F_self / A Wherein: P_box is the pressure that the cabin body can withstand.

[0047] P_open is the opening pressure of the top cover.

[0048] F_self is the sum of the weight and friction of the top cover itself.

[0049] A is the area of the top cover.

[0050] The bottom end of the pressure relief pipe 8 is provided with a flange, and the pressure relief pipe 8 is detachably fixed to the top cabin wall of the cabin body through the flange and bolts.

[0051] In this embodiment, the weight of the top cover 9 and the friction between the top cover 9 and the open end of the pressure relief pipe 8 make the top cover 9 only open under the condition of fire or explosion, and cannot be opened under normal working conditions. In order to realize ventilation of the energy storage cabin, as shown in the figure, a plurality of pressure relief pipes 8 are also connected with elbow pipes 16, and the elbow pipes 16 serve as ventilation pipes. The fan 2 introduces air into the energy storage cabin, and the air in the energy storage cabin can be discharged by the elbow pipe 16 after entering the pressure relief pipe 8. Figures 8-10

[0052] The number and position of the pressure relief pipe 8 provided with the elbow pipe 16 can be set according to actual needs, and will not be described in detail here.

[0053] In this embodiment, the pressure relief pipe 8 is connected with two elbow pipes 16, and the two elbow pipes 16 are oppositely arranged, i.e. arranged at an interval of 180°.

[0054] As shown in the figure, the elbow pipe 16 includes a first elbow pipe section 16-1 and a second elbow pipe section 16-2, the first elbow pipe section 16-1 is fixedly connected with the pipe wall of the pressure relief pipe 8, the air inlet end thereof is located inside the pressure relief pipe 8, and the axis of the air inlet end is arranged at an angle of 45° with the axis of the pressure relief pipe 8. The air outlet end of the first elbow pipe section 16-1 is located outside the pressure relief pipe 8, and the axis thereof is perpendicular to the axis of the pressure relief pipe 8. Figures 11-14

[0055] ​​The air inlet end of the second elbow pipe section 16-2 is detachably fixedly connected with the air outlet end of the first elbow pipe section 16-1 through flanges and bolts, the air outlet end axis of the second elbow pipe section 16-2 is parallel to the pressure relief pipe 8, the second elbow pipe section 16-2 is curved towards the top cabin wall direction, and the air outlet end thereof is arranged towards the top cabin wall. In this way, rain and sundries can be prevented from entering the cabin body of the energy storage cabin through the complete pipe.

[0056] The air inlet end of the first elbow pipe section 16-1 is provided with a hinged seat, and the hinged seat is rotationally connected with one end of the baffle 17 through a rotating shaft. In the embodiment, a set friction force is provided between the rotating shaft and the baffle 17, so that the baffle 17 can keep the posture stable by using the friction force between the rotating shaft under the normal working condition.

[0057] In the embodiment, the baffle 17 can keep the posture stable by using the friction force under the normal working condition of the energy storage cabin through increasing the roughness of the cooperation surface of the rotating shaft and the baffle 17, and the existing technology can be used, which will not be described in detail herein.

[0058] Under the normal working condition, the baffle 17 is adjusted to be at an angle of 45° with the axis of the pressure relief pipe.

[0059] Under the normal working condition, the air flow introduced by the fan 2 flows into the pressure relief pipe 8, and the wind force is not enough to open the top cover 9 and rotate the baffle 17. At this time, the air flow is discharged through the elbow pipe 16, and the ventilation of the energy storage cabin is realized.

[0060] When the explosion or fire occurs, the high-temperature gas with large pressure enters the pressure relief pipe 8. At this time, under the action of the high-temperature gas, the baffle 17 rotates to close the air inlet end of the elbow pipe 16, so as to prevent the flame or high-temperature gas from flowing out of the elbow pipe 16 to cause damage to the top cabin wall. The high-temperature gas opens the top cover 9, and the flame and high-temperature gas are sprayed upward through the pressure relief pipe 8, so as to realize the pressure relief of the energy storage cabin.

[0061] The explosion-proof energy storage cabin of the embodiment can make the flame and toxic gas sprayed upward through the pressure relief pipe 8 without being sprayed laterally when the fire or explosion occurs in the energy storage cabin, so as to avoid greater loss caused by the disorderly combustion of the flame, prevent the flame and pressure from being sprayed in the reverse direction through the fan device, prevent the surrounding personnel and objects from being burned, and prevent the fire from further expanding. The safety of the energy storage cabin is further improved. The top cover 9 at the top of the pressure relief pipe 8 can timely open to release the internal pressure, so as to prevent the secondary injury caused by the rupture of the energy storage cabin. Moreover, the added check structure, pressure relief pipe 8 and elbow pipe 16 have simple structures and low modification cost, and have good economic benefits.

[0062] The remaining structure of the energy storage cabin can use the existing technology, which will not be described in detail herein.

[0063] Embodiment 2 The embodiment provides a ventilation and pressure relief method of the explosion-proof energy storage cabin described in embodiment 1. In a normal working state: the fan 2 works to introduce air flow into the cabin body, the air flow cannot open the top cover 9 and drive the baffle 17 to rotate after entering the pressure relief pipe 8, the air flow is discharged from the elbow pipe 16, ventilation of the energy storage cabin is achieved, and accumulation of heat in the cabin is avoided.

[0064] Ffan,normal < Ffan,max Ffan,max < Fhold,damper Ffan,max < Fseal,cover Wherein, the holding force of the baffle 17 can be further expressed as: Fhold,damper = k ⋅ A proj A proj = A ⋅ cos (45°) Fhold,damper = k ⋅ A ⋅ cos (45°) Here, k is a proportional coefficient, which depends on factors such as the material, thickness of the baffle 17 and the size of the channel of the elbow pipe 16.

[0065] Ffan,max: the maximum air flow force that the fan can generate.

[0066] Ffan,normal: the blowing force of the fan under normal working conditions, which should be less than the maximum blowing force of the fan.

[0067] Fhold,damper: the minimum force required to keep the baffle from being blown.

[0068] Fseal,cover: the minimum force required to keep the top cover closed.

[0069] A is the area of the baffle.

[0070] When a fire occurs in the cabin body, high-temperature and high-pressure gas is generated, which quickly causes the check valve 7 to close and block the ventilation hole 5, so that the high-temperature and high-pressure gas and the flame cannot be injected back to the outside of the cabin body 1 through the fan 2, avoiding injury to personnel and objects around the energy storage cabin. At the same time, the high-temperature and high-pressure gas entering the pressure relief pipe 8 blows the baffle 17 at the inlet end of the elbow pipe 16, drives the baffle 17 to rotate, closes the inlet end of the elbow pipe 16, prevents the high-temperature and high-pressure flame from being injected from the elbow pipe 16 to burn the top cabin wall, and at the same time, the high-temperature and high-pressure gas blows the top cover 9 at the top of the pressure relief pipe 8, opens the top of the pressure relief pipe 8, increases the exhaust area, and guides and discharges the flame and high-temperature and high-pressure toxic gas, achieving pressure relief of the energy storage cabin.

[0071] At the time of an explosion, the fan pressure can be neglected because the anti-backflow cover 4 of the fan 2 will close the vent 5 by the flap 7 at the time of an explosion. The relationship can be expressed as: Fexplosion≥ Fclose,damper Fexplosion≥ Fopen,cover Explosion or high pressure generated force (Fexplosion): The impact force generated at the time of an explosion or high pressure in the energy storage cabin.

[0072] Damper closing force (Fclose,damper): The minimum force required for the damper to close the elbow inlet under the condition of an explosion or high pressure.

[0073] Top cover opening force (Fopen,cover): The minimum force required for the top cover to be pushed open under the condition of an explosion or high pressure.

[0074] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Various modifications and changes can be made by those skilled in the art based on the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An explosion-proof energy storage cabin comprising a cabin body, two opposite side cabin walls of the cabin body are provided with a fan, characterized in that, The fan is provided with a check mechanism to enable air flow only from the fan to the inside of the cabin, and the top wall of the cabin is provided with a plurality of pressure relief pipes, which are in communication with the inside of the cabin, and the top end of each pressure relief pipe is rotatably connected with a top cover, and the plurality of pressure relief pipes are further connected with at least one elbow pipe, which serves as a ventilation pipe, and the air inlet end of the elbow pipe is in communication with the inside of the pressure relief pipe and is rotatably connected with a baffle, and the air outlet end of the elbow pipe is arranged towards the top wall of the cabin.

2. An explosion-proof energy storage compartment as claimed in claim 1, characterized in that The air inlet end of the elbow pipe is rotatably connected with a baffle through a rotating shaft, and the baffle and the rotating shaft have a set friction force to enable the baffle to rotate around the rotating shaft only under the action of a load greater than the set friction force.

3. The explosion-proof energy storage compartment of claim 1, wherein, The pressure relief pipe is connected with a plurality of elbow pipes, which are equally spaced along the circumferential direction of the pressure relief pipe.

4. The explosion-proof energy storage compartment of claim 1, wherein, The elbow pipe comprises a first elbow pipe section and a second elbow pipe section, the first elbow pipe section is fixedly connected with the pressure relief pipe, and the second elbow pipe section is detachably fixedly connected with the air outlet end of the first elbow pipe section, and the second elbow pipe section is bent towards the top wall of the cabin to enable the air outlet end of the second elbow pipe section to be arranged towards the top wall of the cabin.

5. An explosion-proof energy storage compartment as claimed in claim 1, characterized in that, The open end of the pressure relief pipe is provided with oppositely arranged rotating connecting seats and a protrusion, the rotating connecting seats are provided with long holes distributed along the axial direction of the pressure relief pipe, one end of the top cover is provided with two connecting ear plates, the rotating connecting seats extend between the two connecting ear plates, the rotating connecting seats are connected with the connecting ear plates through pins passing through the long holes and the two connecting ear plates, and the other end of the top cover is provided with a sliding groove component matched with the protrusion.

6. An explosion-proof energy storage compartment as claimed in claim 5, characterized in that The top cover comprises a cover plate, the edge of the cover plate is provided with an inner ring plate and an outer ring plate, and the space for inserting the open end of the pressure relief pipe is formed between the inner ring plate and the outer ring plate.

7. An explosion-proof energy storage compartment as claimed in claim 1, characterized in that, The plurality of pressure relief pipes are arranged in an array on the top wall of the cabin.

8. An explosion-proof energy storage compartment as claimed in claim 1, characterized in that, The check mechanism comprises a backflow protection cover fixed to the inside of the side wall of the cabin, a plurality of ventilation holes are arranged in an array on the backflow protection cover, a hinged seat is arranged above each ventilation hole, the hinged seat is fixed to the side of the backflow protection cover facing the inside of the cabin, one end of a check piece is rotatably connected with the hinged seat, and the check piece is matched with the ventilation hole to enable the rotation of the check piece to switch between the open and closed states of the ventilation hole.

9. An explosion-proof energy storage compartment as claimed in claim 1, characterized in that, The inside of the wall of the cabin is covered with a layer of fireproof material, and the water and electricity through-wall hole of the cabin is arranged at the bottom of the side wall of the cabin and is sealed by fireproof and explosion-proof mud.

10. A ventilation and pressure relief method for the explosion-proof energy storage cabin according to any one of claims 1-9, characterized in that: under normal working conditions, the fan works to introduce air flow into the cabin through the check mechanism, the air flow enters the pressure relief pipe, and the force of the air flow on the top cover and the baffle cannot drive the top cover and the baffle to move, and the air flow flows out through the elbow pipe; when a fire occurs, the pressure in the cabin increases, the check mechanism is closed to prevent high-temperature gas from being injected from the side of the energy storage cabin to the outside of the energy storage cabin, at the same time, the high-temperature gas in the energy storage cabin enters the pressure relief pipe, under the action of the high-temperature gas, the baffle at the air inlet end of the elbow pipe rotates to close the elbow pipe, and at the same time, the top cover rotates to open under the action of the high-temperature gas, thereby achieving the pressure relief of the cabin.

Images