Simple hazardous waste storage equipment for temporarily storing waste lead storage batteries in transformer substation

Abstract

The invention discloses simple hazardous waste storage equipment for temporarily storing waste lead storage batteries in a transformer substation, and relates to the technical field of hazardous waste storage. The invention discloses simple hazardous waste storage equipment for temporarily storing waste lead storage batteries in a transformer substation. The simple hazardous waste storage equipment comprises four functional modules, namely a main body supporting system, a layered anti-seepage system, a safety protection and emergency system and a mobile and adaptive system. Aiming at the problems of poor anti-seepage performance and low safety in the field at present, the anti-seepage system adopts layered design, and simple and modularized hazardous waste storage equipment integrating anti-seepage, explosion-proof, fire-proof and convenient movement is constructed by utilizing the characteristics of triple anti-seepage design and layered protection, so that the equipment has the advantages of good anti-seepage performance and high safety. The invention aims to completely eradicate the environmental and safety risks in the hazardous waste storage process from the source, reduce the construction and operation and maintenance cost and improve the management efficiency.

Description

Technical Field

[0001] This invention relates to the field of hazardous waste storage technology, specifically to a simple hazardous waste storage device for temporary storage of waste lead-acid batteries in substations. Background Technology

[0002] Substations, as critical nodes in the power system, generate various hazardous wastes during operation and maintenance, with waste lead-acid batteries being the most typical. Currently, the main methods for handling this hazardous waste include professional recycling, harmless treatment, and compliant storage and transportation. In terms of professional recycling, waste lead-acid batteries are typically separated into lead paste, lead grids, and electrolyte through mechanical crushing. While the recovery rate is high, the process is energy-intensive and costly, making it unsuitable for substations. Harmless treatment often employs solidification / stabilization technologies, adding cement or chelating agents to reduce the leaching toxicity of heavy metals. However, this method increases the volume of waste, raising subsequent landfill costs. Therefore, safe and compliant temporary storage at the point of generation is a crucial intermediate step before transferring hazardous waste to qualified disposal units. Furthermore, existing storage solutions still have room for improvement in technical details. For example, the lack of integrated ventilation and explosion-proof design for the release of volatile organic compounds and the accumulation of flammable gases (such as hydrogen generated from batteries) poses a fire and explosion hazard. Regarding seepage prevention, a single seepage barrier design may lack sufficient sealing reliability and durability under extreme temperature conditions or frequent relocation, and secondary leak prevention and emergency collection measures are often overlooked. Furthermore, most containers lack user-friendly design features such as rapid assembly and mobility, increasing the workload of maintenance personnel. Therefore, there is an urgent need in this field for a hazardous waste storage solution that combines compliance, safety, economy, and ease of use. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a simple hazardous waste storage device for temporary storage of waste lead-acid batteries in substations.

[0004] This invention addresses the problems of poor seepage prevention and low safety currently faced in the field. The seepage prevention system adopts a layered design, utilizing a triple seepage prevention design and layered protection features to construct a simple and modular hazardous waste storage device that integrates seepage prevention, explosion prevention, fire prevention, and convenient mobility, giving the device the advantages of good seepage prevention and high safety.

[0005] This invention provides a simple hazardous waste storage device for temporary storage of waste lead-acid batteries in substations. It integrates leak-proof, explosion-proof, fire-proof, emergency handling, and easy mobility, aiming to eliminate environmental and safety risks in the hazardous waste storage process from the source, while reducing construction and operation and maintenance costs and improving management efficiency.

[0006] This invention employs a triple-layered seepage prevention system, constructing multiple leak-proof barriers to ensure extremely low permeability and effectively handle leaked materials, significantly enhancing the ability to prevent hazardous waste leakage. An explosion-proof axial flow fan is integrated at the top of the system, continuously reducing the concentration of flammable gases inside the container through forced ventilation, preventing it from reaching explosive limits. An intumescent fire-retardant polyurethane coating is applied to the fan (a potential ignition source) and the outer shell of critical equipment for protection. This coating rapidly expands and foams upon contact with high-temperature flames, forming a dense, thick, carbonized insulating layer. This insulating layer effectively prevents flames from directly burning the equipment body, preventing fire from passing through or damaging the equipment. Together, these features enhance the safety and seepage prevention performance of the equipment.

[0007] A simple hazardous waste storage device for temporary storage of waste lead-acid batteries in substations includes four functional modules: main support system, layered anti-seepage system, safety protection and emergency system, and mobility and adaptation system.

[0008] The main support system is a frame structure 1 made of aluminum alloy profiles;

[0009] The layered seepage prevention system is installed in the main support system and includes multiple main inner liner 2, tray 3, liquid collection tank 4, emergency adsorption drawer 5, and floor mat 6; the main inner liner 2 forms the first layer of protection; the tray 3, liquid collection tank 4, and emergency adsorption drawer 5 form the second layer of protection; the floor mat 6 forms the third layer of protection; the main inner liner 2, liquid collection tank 4, and emergency adsorption drawer 5 are installed in the tray 3, and the floor mat 6 is installed below the tray 3; the main inner liner 2 is connected to the liquid collection tank 4 through a guide pipe, and the lower end of the liquid collection tank 4 is connected to the emergency adsorption drawer 5 through a pipe 7; the bottom surface of the liquid collection tank 4 is inclined.

[0010] The aforementioned safety protection and emergency system includes an explosion-proof fan 8 and a fire-retardant coating, wherein the fire-retardant coating is applied to the outer shell of the explosion-proof fan; the explosion-proof fan is installed on top of the main support system;

[0011] The aforementioned mobility and adaptation system includes omnidirectional casters 9 and multiple adjustable partitions 10; the omnidirectional casters 9 are installed at the four corners of the bottom of the external three-dimensional truss; the adjustable partitions are set on the layered partition slots inside the main support system for partitioned storage.

[0012] The main principle of this invention:

[0013] The seepage prevention system of this invention constructs a multi-layered, inclusive leak-proof barrier through a triple-layered seepage prevention design from the inside out, significantly improving the ability to block hazardous waste leakage. Relying on a seamless main inner liner 2, tray 3, collection tank 4, and emergency adsorption drawer 5, the system can effectively collect and initially treat leaked materials, greatly reducing the risk of hazardous waste seepage. An intrinsically safe explosion-proof fan 8 is integrated at the top. Its key components are protected with antistatic materials and intumescent fire-retardant coatings, and are linked to start / stop via a combustible gas sensor, ensuring an air exchange efficiency of no less than 2 times per hour, inhibiting the accumulation of combustible gases at the source and eliminating the risk of combustion and explosion. An intumescent fire-retardant polyurethane fire-retardant coating is applied to the fan, a potential ignition source, and the outer shell of the critical equipment for protection. When exposed to high-temperature flames, this coating rapidly expands and foams, forming a dense, thick carbonized heat insulation layer. This heat insulation layer effectively blocks direct flames from burning the equipment body, preventing fire from passing through or damaging the container, thus jointly improving the safety and seepage prevention performance of the equipment.

[0014] The beneficial effects of this invention are as follows:

[0015] I. Excellent seepage prevention performance: In this invention, multiple main inner tanks 2 are used to store hazardous waste liquid. The seepage prevention system of this invention constructs a multi-encompassing leak-proof barrier from the inner tank to emergency adsorption through a triple progressive seepage prevention design, ensuring extremely low permeability and effectively collecting and treating leaked materials, significantly reducing the risk of hazardous waste liquid leakage.

[0016] II. Intrinsically safe design: The integrated explosion-proof axial flow fan eliminates the risk of flammable gas accumulation through forced ventilation; the fan uses antistatic materials and fireproof coatings to suppress the generation of fire sources from the source and improve the explosion-proof and fireproof rating.

[0017] III. Flexibility and Convenience: The modular frame structure facilitates quick assembly and disassembly; the omnidirectional casters and adjustable partitions make the container flexible to move and highly efficient in space utilization, greatly reducing the workload of maintenance personnel.

[0018] IV. Compliance and Economy: The container design complies with relevant regulations for hazardous waste storage. Its simplified and modular features effectively reduce construction and operation and maintenance costs, making it particularly suitable for use in places with limited space and high safety requirements, such as substations.

[0019] Fifth, in this invention, adjustable partitions are installed in the layered partition slots inside the main support system for partitioned storage of items such as transformer oil drums and waste batteries. The PP material partitions can be flexibly inserted or removed to achieve efficient use of space and classified and partitioned storage of different hazardous wastes, avoiding the risks caused by mixed storage. Attached Figure Description

[0020] Figure 1 A top view of a simple hazardous waste storage device for temporary storage of waste lead-acid batteries in a substation;

[0021] Figure 2 for Figure 1 View A in the middle;

[0022] Figure 3 for Figure 1 View B in the middle;

[0023] Figure 4 for Figure 1 C view in the middle;

[0024] In the above diagram, 1 is the frame structure, 2 is the main inner liner, 3 is the tray, 4 is the liquid collection tank, 5 is the emergency adsorption drawer, 6 is the floor mat, 7 is the pipe, 8 is the explosion-proof fan, 9 is the swivel casters, and 10 is the adjustable partition. Detailed Implementation

[0025] Specific Implementation Method 1: This implementation method is a simple hazardous waste storage equipment for temporary storage of waste lead-acid batteries in substations. It includes four major functional modules: main support system, layered anti-seepage system, safety protection and emergency system, and mobility and adaptation system.

[0026] The main support system is a frame structure 1 made of aluminum alloy profiles;

[0027] The layered seepage prevention system is installed in the main support system and includes multiple main inner liner 2, tray 3, liquid collection tank 4, emergency adsorption drawer 5, and floor mat 6; the main inner liner 2 forms the first layer of protection; the tray 3, liquid collection tank 4, and emergency adsorption drawer 5 form the second layer of protection; the floor mat 6 forms the third layer of protection; the main inner liner 2, liquid collection tank 4, and emergency adsorption drawer 5 are installed in the tray 3, and the floor mat 6 is installed below the tray 3; the main inner liner 2 is connected to the liquid collection tank 4 through a guide pipe, and the lower end of the liquid collection tank 4 is connected to the emergency adsorption drawer 5 through a pipe 7; the bottom surface of the liquid collection tank 4 is inclined.

[0028] The aforementioned safety protection and emergency system includes an explosion-proof fan 8 and a fire-retardant coating, wherein the fire-retardant coating is applied to the outer shell of the explosion-proof fan; the explosion-proof fan is installed on top of the main support system;

[0029] The aforementioned mobility and adaptation system includes omnidirectional casters 9 and multiple adjustable partitions 10; the omnidirectional casters 9 are installed at the four corners of the bottom of the external three-dimensional truss; the adjustable partitions are set on the layered partition slots inside the main support system for partitioned storage.

[0030] Specific Implementation Method Two: This implementation method differs from Specific Implementation Method One in that the aluminum alloy profile used is a 6005 series aluminum alloy profile with a wall thickness of 3mm. The other steps are the same as in Specific Implementation Method One.

[0031] Specific Implementation Method Three: This implementation method differs from Specific Implementation Method One or Two in that the main inner liner is made of 2mm thick high-density polyethylene, is integrally molded, and has a ≥50mm embankment around the edge. Other steps are the same as in Specific Implementation Method One or Two.

[0032] Specific Implementation Method Four: The difference between this implementation method and Specific Implementation Methods One to Three is that the tray is made of polypropylene, is integrally molded, and has a volume of 110% of the main inner liner. The other steps are the same as in Specific Implementation Methods One to Three.

[0033] Specific Implementation Method Five: This implementation method differs from Specific Implementation Methods One to Four in that the emergency adsorption drawer contains a sodium bicarbonate layer and an activated carbon layer from bottom to top. The other steps are the same as in Specific Implementation Methods One to Four.

[0034] Specific Implementation Method Six: This implementation method differs from Specific Implementation Methods One to Five in that the material of the floor mat is high-density polyethylene with a thickness ≥1.5mm. The other steps are the same as in Specific Implementation Methods One to Five.

[0035] Specific Implementation Method Seven: This implementation method differs from Specific Implementation Methods One to Six in that the explosion-proof fan is an explosion-proof axial flow fan; the impeller and casing of the explosion-proof axial flow fan are both made of antistatic materials. Other steps are the same as in Specific Implementation Methods One to Six.

[0036] Specific Implementation Method Eight: This implementation method differs from Specific Implementation Methods One to Seven in that the fire-retardant coating is an intumescent polyurethane fire-retardant coating. The other steps are the same as in Specific Implementation Methods One to Seven.

[0037] Specific Implementation Method Nine: This implementation method differs from Specific Implementation Methods One to Eight in that it includes four omnidirectional casters, two of which are PU casters with double brakes. The other steps are the same as in Specific Implementation Methods One to Eight.

[0038] Specific Implementation Method Ten: This implementation method differs from Specific Implementation Methods One to Nine in that: the adjustable partitions are in multiple sets, and the material is PP. Other steps are the same as in Specific Implementation Methods One to Nine.

[0039] The beneficial effects of the present invention are verified using the following embodiments:

[0040] Example 1: A simple hazardous waste storage device for temporary storage of waste lead-acid batteries in substations, comprising four main functional modules: main support system, layered anti-seepage system, safety protection and emergency system, and mobility and adaptation system;

[0041] The main support system is a frame structure 1 made of aluminum alloy profiles, with a length of 1200mm and a width of 800mm;

[0042] The layered seepage prevention system is installed in the main support system and includes multiple main inner liner 2, tray 3, liquid collection tank 4, emergency adsorption drawer 5, and floor mat 6; the main inner liner 2 forms the first layer of protection; the tray 3, liquid collection tank 4, and emergency adsorption drawer 5 form the second layer of protection; the floor mat 6 forms the third layer of protection; the main inner liner 2, liquid collection tank 4, and emergency adsorption drawer 5 are installed in the tray 3, and the floor mat 6 is installed below the tray 3; the main inner liner 2 is connected to the liquid collection tank 4 through a guide pipe, and the lower end of the liquid collection tank 4 is connected to the emergency adsorption drawer 5 through a pipe 7; the bottom surface of the liquid collection tank 4 is inclined at an angle of 5°;

[0043] The aforementioned safety protection and emergency system includes an explosion-proof fan 8 and a fire-retardant coating, wherein the fire-retardant coating is applied to the outer shell of the explosion-proof fan; the explosion-proof fan is installed on top of the main support system;

[0044] The aforementioned mobility and adaptation system includes omnidirectional casters 9 and multiple adjustable partitions 10; the omnidirectional casters 9 are installed at the four corners of the bottom of the external three-dimensional truss; the adjustable partitions are set in the layered partition slots inside the main support system for partitioned storage;

[0045] The aluminum alloy profile mentioned is a 6005 series aluminum alloy profile with a wall thickness of 3mm;

[0046] The main inner liner is made of high-density polyethylene with a thickness of 2mm, and is integrally molded with a ≥50mm embankment around the edge;

[0047] The tray is made of polypropylene, is integrally molded, and its volume is 110% of the main inner liner.

[0048] The emergency adsorption drawer has a pull-out structure, and the interior of the emergency adsorption drawer consists of a sodium bicarbonate layer and an activated carbon layer from bottom to top; the dimensions of the emergency adsorption drawer are 200mm × 150mm.

[0049] The floor mat is made of high-density polyethylene with a thickness of ≥1.5mm;

[0050] The explosion-proof fan is an explosion-proof axial flow fan; the impeller and casing of the explosion-proof axial flow fan are both made of antistatic materials.

[0051] The fire-retardant coating is an intumescent polyurethane fire-retardant coating;

[0052] The swivel casters consist of four parts, two of which are PU casters with dual brakes;

[0053] The adjustable partitions are in multiple sets and are made of PP.

Claims

1. A simple hazardous waste storage facility for temporary storage of spent lead batteries at a substation, characterized in that It comprises four functional modules: main body support system, layered anti-seepage system, safety protection and emergency system and mobile and adaptive system. The main body support system is a frame structure (1) composed of aluminum alloy profiles. The layered anti-seepage system is arranged in the main body support system and comprises a plurality of main inner containers (2), trays (3), liquid collecting channels (4), emergency adsorption drawers (5) and floor mats (6). The main inner containers (2) form the first heavy protection; the trays (3), the liquid collecting channels (4) and the emergency adsorption drawers (5) form the second heavy protection; the floor mats (6) form the third heavy protection; the main inner containers (2), the liquid collecting channels (4) and the emergency adsorption drawers (5) are arranged in the trays (3), and the floor mats (6) are arranged below the trays (3); the main inner containers (2) are connected with the liquid collecting channels (4) through flow guide pipes, and the lower ends of the liquid collecting channels (4) are connected with the emergency adsorption drawers (5) through pipelines (7); the bottom surface of the liquid collecting channel (4) is a slope. The safety protection and emergency system comprises an explosion-proof fan (8) and a fireproof coating, the fireproof coating is coated on the shell of the explosion-proof fan, and the explosion-proof fan is arranged at the top of the main body support system. The mobile and adaptive system comprises universal casters (9) and a plurality of adjustable partitions (10); the universal casters (9) are installed at the four corners of the bottom of the external three-dimensional truss; the adjustable partitions are arranged on the layered partition slots in the main body support system and are used for partition storage.

2. A simple hazardous waste storage facility for temporary storage of spent lead batteries in a substation as claimed in claim 1, wherein The aluminum alloy profiles are 6005 series aluminum alloy profiles with a wall thickness of 3 mm.

3. A simple hazardous waste storage facility for temporary storage of spent lead batteries in a substation as claimed in claim 1, wherein The main inner containers are made of high-density polyethylene with a thickness of 2 mm and are integrally formed, and the edges are provided with cofferdams with a length of ≥50 mm.

4. A simple hazardous waste storage facility for temporary storage of spent lead batteries in a substation as claimed in claim 1, wherein The trays are made of polypropylene and are integrally formed, and the volume is 110% of that of the main inner containers.

5. A simple hazardous waste storage facility for temporary storage of spent lead batteries in a substation as claimed in claim 1, wherein The emergency adsorption drawers are provided with a sodium bicarbonate layer and an activated carbon layer from bottom to top.

6. A simple hazardous waste storage facility for temporary storage of spent lead batteries in a substation as claimed in claim 1, wherein The floor mats are made of high-density polyethylene with a thickness of ≥1.5 mm.

7. A simple hazardous waste storage facility for temporary storage of spent lead batteries in a substation as claimed in claim 1, wherein The explosion-proof fan is an explosion-proof axial flow fan; the fan impeller and the shell of the explosion-proof axial flow fan are made of antistatic materials.

8. A simple hazardous waste storage facility for temporary storage of spent lead batteries in a substation as claimed in claim 1, wherein The fireproof coating is an intumescent polyurethane fireproof coating.

9. A simple hazardous waste storage facility for temporary storage of spent lead batteries in a substation as claimed in claim 1, wherein The universal casters are four, two of which are PU wheels with double brakes.

10. A simple hazardous waste storage facility for temporary storage of spent lead batteries in a substation as claimed in claim 1, wherein The adjustable partitions are multiple and are made of PP.

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