Modularized assembly type accident oil pool device

Abstract

The utility model belongs to the technical field of transformer substations, and relates to a modular assembly type accident oil pool device which comprises a tank body, an oil inlet pipe, a water outlet pipe, a rainwater outlet pipe and an exhaust pipe. In order to overcome the defects of the design scheme of the accident oil pool in the prior art, the accident oil pool is designed in a prefabricated mode, when the accident oil pool subjected to optimized design is in an accident-free state, if rainwater enters the accident oil pool and the collection amount reaches a certain degree, rainwater remaining in the tank body is pumped out through the rainwater pump, and then the accident oil pool is recycled. The workload of pumping water by operation and maintenance personnel is reduced, and the effective volume of the accident oil pool is always kept above 30 cubic meters, so that the accident oil pool can be completely collected in an accident; meanwhile, the anti-seepage problem of the accident oil pool is effectively solved through the double-layer tank design; if leakage occurs inside, the electronic leakage detector can trigger an alarm, and meanwhile leaked oil can also exist in the cavity; and the prefabricated assembly type design is also convenient for engineering construction.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformer substations and relates to a modular assembled accident oil pool device. Background Art

[0002] The purpose of a substation emergency oil pit is to prevent oil leaks from damaged oil-filled electrical equipment, such as main transformers, from causing fires and potentially escalating accidents. According to national standards, for oil-filled electrical equipment like main transformers, where the oil volume in a single tank exceeds 1,000 kg, emergency oil storage and drainage facilities should be installed. Their capacities should be no less than 20% of the oil volume of the individual equipment and 60% of the maximum capacity of the individual equipment, respectively. The length and width of the oil pit should be 1 meter larger on each side than the equipment's exterior corridor. The total emergency oil pit should have oil-water separation capabilities, and its outlet should be located in a safe location without causing environmental pollution.

[0003] However, existing substation emergency oil reservoirs are typically constructed using an on-site pouring method, which is significantly affected by the construction environment and requires a long construction period. Furthermore, since these poured reservoirs are constructed, leaks cannot be effectively monitored and pre-tightened, often only being discovered after significant environmental pollution. Therefore, a simple and convenient emergency oil reservoir with effective leak monitoring is needed to address these technical issues. Utility Model Content

[0004] The technical solution adopted by the utility model to solve the technical problem is: a modular assembled accident oil pool device, including: a tank body, an oil inlet pipe, a water outlet pipe, a rainwater outlet pipe, and an exhaust pipe. The tank body is a closed tank body, and a partition is provided in the inner cavity of the tank body to separate the inner cavity of the tank body into an oil chamber and a water chamber that are closed and separated from each other in the horizontal direction. A reserved hole is provided at the bottom of the partition, and the two ends of the reserved hole are respectively connected to the oil chamber and the water chamber. The outer end of the oil inlet pipe is connected to the accident oil input end of the substation, and the inner end of the oil inlet pipe extends from the outside to the inside into the lower part of the oil chamber, the outer end of the water outlet pipe is connected to the drain port, and the inner end of the water outlet pipe extends from the outside to the inside into the bottom of the water chamber, the outer end of the rainwater outlet pipe is connected to the drain port, and the rainwater outlet pipe The inner end of the rainwater outlet pipe extends from the outside to the inside into the bottom of the oil cavity, the inner end of the rainwater outlet pipe is provided with a rainwater pump, the outer end of the exhaust pipe is connected to the exhaust port, and the inner end of the exhaust pipe extends from the outside to the inside into the upper part of the water cavity; the oil inlet pipe is used to introduce the substation accident oil into the tank body, the water outlet pipe is used to discharge the water after oil and water separation from the tank body, the rainwater outlet pipe is used to control the rainwater level in the tank body, and when the rainwater exceeds the set value, the rainwater pump is started to drain water to ensure that the effective volume in the tank body meets the accident oil volume requirement, and the exhaust pipe is used to discharge the exhaust gas generated during the oil-water separation process out of the tank body in time to ensure that the pressure difference between the inside and outside of the tank body enables the tank body to normally and continuously perform oil-water separation and introduce accident oil and drain water;

[0005] The inner port of the oil inlet pipe is higher than the highest point of the reserved hole, the inner port of the water outlet pipe is lower than the highest point of the reserved hole, and the water inlet of the rainwater pump is lower than the inner port of the oil inlet pipe; the tank wall of the tank body is double-layered inside and outside, and a sealed interlayer is provided between the inner and outer double-layer tank walls of the tank body; a first manhole and a second manhole are provided on the upper part of the tank body, the first manhole connects the outside of the tank body with the inside of the oil cavity, and the second manhole connects the outside of the tank body with the inside of the water cavity, and the first manhole and the second manhole are respectively covered with manhole covers; the tank body is provided with inner and outer double-layer tank walls, which are waterproof and anti-corrosion on the inside, and when the tank body is buried deep underground for a long time, it prevents moisture, corrosion, leakage and pollution to the soil environment on the outside; at the same time, it can extend the service life of the tank body; and the first manhole and the second manhole are convenient for staff to regularly inspect and repair the oil cavity and water cavity of the tank body.

[0006] Preferably, the tank body is cylindrical, and an elliptical head is provided at each end of the cylinder of the tank body; the middle cylindrical shape and the elliptical shapes at both ends are interconnected, so that the tank body has better stress distribution, tank internal volume and better processing performance.

[0007] More preferably, the tank body is vertically provided with a head support and an inner support, which are respectively in the shape of a M-shaped frame. The head support is supported at the mutual penetration point between the cylindrical part of the tank body and the elliptical part of the elliptical head, and the inner support is supported at the inner cavity of the cylindrical part of the tank body; the head support and the inner support are used to support the inner cavity of the tank body, ensure the pressure bearing capacity of the inner cavity, and maintain the rigidity of the tank body when the pressure difference between the inside and outside of the tank body is large.

[0008] Preferably, the manhole cover is provided with a fixed part and a movable part, the movable part is connected to the fixed part by rotating along a horizontal rotation axis, and the oil inlet pipe, water outlet pipe, rainwater outlet pipe and exhaust pipe are respectively inserted into the inner cavity of the tank body from the fixed part; each pipe is inserted from the fixed part on the manhole cover, so that there is no need to consider the pipeline entrance during the production and processing of the tank body, and each pipe only needs to be inserted through the fixed part during on-site installation. Therefore, production is more convenient and quick, the pipe diameter and quantity of the adapted pipes are more flexible, and the adaptability is wider.

[0009] Preferably, the tank body is provided with an electronic leak detector and an electronic liquid level meter, the detection part of the electronic leak detector is connected to the bottom of the interlayer, and the detection part of the electronic liquid level meter extends vertically into the oil cavity and / or the water cavity; the electronic leak detector is used to detect leakage of the inner wall of the tank body. When the inner wall of the tank body leaks, the accident oil penetrates into the interlayer. After the electronic leak detector detects it, it reports it to the management and control center in real time, so that timely processing can be carried out to prevent the accident oil from further leaking from the outer wall of the tank body to the outside of the tank body, causing pollution to the external environment and soil; the electronic liquid level meter is used to monitor the liquid level of accident oil, water and other liquids in a single cavity or multiple cavities in the tank body in real time and report it to the management and control center, so that the management and control center can carry out real-time control and management.

[0010] Preferably, a vertical water baffle is provided at the lower part of the oil chamber, and a water hole is provided at the lower part of the water baffle. The water baffle divides the lower part of the oil chamber into two parts along the length direction of the tank body. The inner end of the oil inlet pipe and the reserved hole are respectively located on both sides of the water baffle, and the upper edge height of the water baffle is higher than the height of the inner port of the oil inlet pipe. The water baffle optimizes the structure of the oil chamber, which can improve the oil-water separation efficiency and reduce the pollution emissions of the tank body.

[0011] Preferably, when the tank body is buried underground, a first inspection well and a second inspection well are respectively provided at the first manhole and the second manhole. The wellheads of the first inspection well and the second inspection well are higher than the ground. The bottoms of the first inspection well and the second inspection well are connected to the upper wall of the tank body. The first manhole and the second manhole are respectively located in the first inspection well and the second inspection well.

[0012] Preferably, the inner wall of the tank body is made of stainless steel, and the outer wall of the tank body is made of fiberglass.

[0013] The beneficial effects of the utility model are:

[0014] In view of the shortcomings of the accident oil pool design scheme in the prior art, the utility model prefabricated and assembled design is adopted for the accident oil pool. After the optimized design, if rainwater enters the accident oil pool in a non-accident state and the collection volume reaches a certain level, the rainwater retained in the tank body will be pumped out by a rainwater pump, thereby reducing the workload of the operation and maintenance personnel in pumping water, and keeping the effective volume of the accident oil pool above 30 cubic meters, ensuring that it can be 100% collected in the event of an accident; at the same time, the double-layer tank design effectively solves the problem of anti-seepage of the accident oil pool; if leakage occurs inside, the electronic leak detector will trigger an alarm, and the leaked oil will also exist in the cavity; the prefabricated and assembled design is also convenient for engineering construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view schematic diagram of a modular assembled emergency oil pool device;

[0016] Figure 2 yes Figure 1 A-direction local enlarged view;

[0017] Figure 3 This is a schematic diagram of the tank when it is buried underground.

[0018] Among them, 1. tank body; 2. oil inlet pipe; 3. water outlet pipe; 4. rainwater outlet pipe; 5. exhaust pipe; 6. electronic leak detector; 7. electronic liquid level meter; 8. first inspection well; 9. second inspection well; 101. partition; 102. oil chamber; 103. water chamber; 104. reserved hole; 105. interlayer; 106. first manhole; 107. second manhole; 108. manhole cover; 109. elliptical head; 110. head support; 111. inner support; 112. fixed part; 113. movable part; 114. water baffle; 401. rainwater pump. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the relevant technologies in the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] refer to Figures 1 to 3A modular assembled emergency oil pool device includes: a tank body 1, an oil inlet pipe 2, a water outlet pipe 3, a rainwater outlet pipe 4, and an exhaust pipe 5. The tank body 1 is a closed tank body. The inner cavity of the tank body 1 is provided with a partition 101 to separate the inner cavity of the tank body 1 into an oil chamber 102 and a water chamber 103 that are sealed and separated from each other in the horizontal direction. A reserved hole 104 is provided at the bottom of the partition 101. The two ends of the reserved hole 104 are connected to the oil chamber 102 and the water chamber 103 respectively. The outer end of the oil inlet pipe 2 is connected to the emergency oil input end of the substation, and the inner end of the oil inlet pipe 2 extends from the outside to the inside into the lower part of the oil chamber 102. The outer end of the water outlet pipe 3 is connected to the drain port, and the inner end of the water outlet pipe 3 is connected from The outer end of the rainwater outlet pipe 4 is connected to the drain port, and the inner end of the rainwater outlet pipe 4 is extended from the outside to the inside into the bottom of the oil chamber 102. The inner end of the rainwater outlet pipe 4 is provided with a rainwater pump 401. The outer end of the exhaust pipe 5 is connected to the exhaust port, and the inner end of the exhaust pipe 5 is extended from the outside to the inside into the upper part of the water chamber 103; the oil inlet pipe 2 is used to introduce the substation accident oil into the tank body 1, the outlet pipe 3 is used to discharge the water after oil and water separation from the tank body 1, and the rainwater outlet pipe 4 is used to control the rainwater level in the tank body 1. When the rainwater exceeds the set value, the rainwater pump 401 is started to drain water to ensure that the effective volume in the tank body 1 meets the accident oil volume requirement. , the exhaust pipe 5 is used to discharge the exhaust gas generated during the oil-water separation process out of the tank body 1 in time to ensure the pressure difference between the inside and outside of the tank body 1 so that the tank body 1 can normally and continuously perform oil-water separation and fill in the accident oil and drain water; when the accident oil enters the tank body 1 from the oil inlet pipe 2, there is water at the bottom of the inner cavity of the tank body 1, and the accident oil is separated from the water in the oil cavity 102. The oil layer gradually rises because its density is lower than that of the water layer, and the water layer gradually sinks because its density is higher than that of the oil layer. Therefore, the oil and water in the oil cavity 102 are separated. When the accident oil continues to enter the oil cavity 102, the liquid level of the water layer gradually rises, and the liquid level of the oil layer also gradually rises, and the liquid pressure will press the bottom of the oil cavity 102 The water is pressed into the water chamber 103 from the reserved hole 104 until the hydraulic pressure on both sides of the oil chamber 102 and the water chamber 103 is balanced. At this time, the liquid level in the oil chamber 102 is higher than the liquid level in the water chamber 103. The upper layer in the oil chamber 102 is an oil layer, and the lower layer is a water layer, while the entire water chamber 103 is a layer of oil-water separated water. When the oil inlet pressure of the oil inlet pipe 2 is relatively large or a water pump is used to pump water at the outer end of the water outlet pipe 3, the water outlet pipe 3 discharges the oil-water separated water in the water chamber 103 out of the tank body 1 in the manner of the lower layer first and then the upper layer, so as to achieve the purpose of separating and processing the accident oil. When the oil-water separation of the accident oil is stable, the separated oil in the oil chamber 102 can be led out and reused.

[0021] The inner port height of the oil inlet pipe 2 is higher than the highest point of the reserved hole 104, the inner port height of the water outlet pipe 3 is lower than the highest point of the reserved hole 104, and the water inlet of the rainwater pump 401 is lower than the inner port height of the oil inlet pipe 2; the tank wall of the tank body 1 is double-layered, and a sealed interlayer 105 is provided between the inner and outer double-layer tank walls of the tank body 1; a first manhole 106 and a second manhole 107 are provided on the upper part of the tank body 1, the first manhole 106 connects the outside of the tank body 1 with the inside of the oil chamber 102, and the second manhole 107 connects the outside of the tank body 1 with the water chamber 102. Inside the cavity 103, the first manhole 106 and the second manhole 107 are respectively covered with manhole covers 108; the tank body 1 is provided with an inner and outer double-layer tank wall, which is internally waterproof and anti-corrosion, and externally prevents the environment from being damp, corroded, leaked, and polluted to the soil environment when the tank body 1 is buried deep underground for a long time; at the same time, it can extend the service life of the tank body 1; and the first manhole 106 and the second manhole 107 facilitate the staff to regularly inspect and repair the oil cavity 102 and the water cavity 103 of the tank body 1.

[0022] Furthermore, the tank body 1 is cylindrical, and an elliptical head 109 is provided at both ends of the cylinder of the tank body 1; the middle cylindrical shape and the elliptical shapes at both ends are interconnected, so that the tank body 1 has better stress distribution, tank internal volume and better processing performance.

[0023] Furthermore, a head support 110 and an inner support 111 are vertically provided in the tank body 1. The head support 110 and the inner support 111 are respectively in the shape of a M-shaped frame. The head support 110 is supported at the mutual penetration point between the cylindrical part of the tank body 1 and the elliptical part of the elliptical head 109, and the inner support 111 is supported at the inner cavity of the cylindrical part of the tank body 1; the head support 110 and the inner support 111 are used to support the inner cavity of the tank body 1, ensure the pressure bearing capacity of the inner cavity, and maintain the rigidity of the tank body 1 when the pressure difference between the inside and outside of the tank body 1 is large.

[0024] Furthermore, the manhole cover 108 is provided with a fixed portion 112 and a movable portion 113. The movable portion 113 is connected to the fixed portion 112 by rotating along a horizontal rotation axis. The oil inlet pipe 2, the water outlet pipe 3, the rainwater outlet pipe 4, and the exhaust pipe 5 respectively penetrate into the inner cavity of the tank body 1 from the fixed portion 112; each pipe is penetrated from the fixed portion on the manhole cover 108, so that there is no need to consider the pipeline entrance during the production and processing of the tank body 1. It is only necessary to penetrate each pipeline through the fixed portion 112 during on-site installation. Therefore, production is more convenient and quick, the pipe diameter and quantity of the adapted pipes are more flexible, and the adaptability is wider.

[0025] Furthermore, the tank body 1 is provided with an electronic leak detector 6 and an electronic liquid level meter 7. The detection part of the electronic leak detector 6 is connected to the bottom of the interlayer 105, and the detection part of the electronic liquid level meter 7 extends vertically into the oil cavity 102 and / or the water cavity 103; the electronic leak detector 6 is used to detect leakage of the inner wall of the tank body 1. When the inner wall of the tank body 1 leaks, the accident oil penetrates into the interlayer 105. After the electronic leak detector 6 detects it, it reports it to the management and control center in real time, so as to deal with it in time and prevent the accident oil from further leaking from the outer wall of the tank body 1 to the outside of the tank body 1 and causing pollution to the external environment and soil; the electronic liquid level meter 7 is used to monitor the liquid level of accident oil, water and other liquids in a single cavity or multiple cavities in the tank body 1 in real time and report it to the management and control center so that the management and control center can perform real-time control and management.

[0026] Furthermore, a vertical water baffle 114 is provided at the lower part of the oil chamber 102, and a water hole is provided at the lower part of the water baffle 114. The water baffle 114 divides the lower part of the oil chamber 102 into two parts along the length direction of the tank body 1. The inner end of the oil inlet pipe 2 and the reserved hole 104 are respectively located on both sides of the water baffle 114, and the upper edge height of the water baffle 114 is higher than the height of the inner port of the oil inlet pipe 2; the water baffle 114 optimizes the structure of the oil chamber 102, which can improve the oil-water separation efficiency and reduce the pollution emissions of the tank body 1.

[0027] Furthermore, when the tank body 1 is buried underground, the first manhole 106 and the second manhole 107 are respectively provided with a first inspection well 8 and a second inspection well 9. The wellheads of the first inspection well 8 and the second inspection well 9 are higher than the ground, and the bottoms of the first inspection well 8 and the second inspection well 9 are connected to the upper wall of the tank body 1. The first manhole 106 and the second manhole 107 are respectively located in the first inspection well 8 and the second inspection well 9.

[0028] Furthermore, the inner wall of the tank body 1 is made of stainless steel, and the outer wall of the tank body 1 is made of fiberglass.

[0029] Example

[0030] This embodiment uses the 110 kV substation accident oil pool as an example. The accident oil pool tank 1 is a double-layer tank with inner and outer layers, buried below the ground. Two DN600 plug-in or embedded manholes and corresponding inspection well seats are provided on the double-layer tank. The height of the inspection wells can be adjusted according to the actual project (1.0 to 2.0 meters). The manhole cover 108 is provided with a connecting pipe for the oil inlet pipe 2, a mounting port for the water pump outlet pipe 3, a mounting port for the electronic liquid level meter 7, a mounting port for the exhaust pipe 5, and a mounting hole for the outlet pipe 3. An electronic leak detector 6 is installed in the leak inspection well.

[0031] The nominal thickness of the inner tank shell is 5-7mm, and the shell should be made of steel plates with upper thickness deviation. The steel plate material can be selected from Q235B steel plates that comply with the provisions of "Hot-rolled Carbon Structural Steel and Low-Alloy Structural Steel" (GB 3274-2007). Angle steel is used inside the shell to arrange the head support 110 and inner support 111 in a "M" shape, which plays the role of reinforcing rib support and ensures the stability of the equipment. A water retaining plate 114 is provided inside the oil chamber 102, and the inner tank head should adopt a standard elliptical head 109. The minimum thickness of the head should be greater than the minimum thickness of the shell, and the number of steel plate welds used to make the head should not exceed 1. The nominal diameter of the oil tank is 2700mm, and the total length of the equipment is 6140mm. If water enters the optimized accident oil pool, it will remain in water chamber 103. When the collected volume reaches a certain level (5 cubic meters), the water is pumped out using a water pump, effectively reducing the workload of operation and maintenance personnel. This also leaves sufficient space in the oil pool (effective volume 30 cubic meters) to ensure that the accident oil can be completely collected in the event of an accident. This prevents direct outflow and impacts the environment, reducing the risk of groundwater and soil contamination. The presence of a water retaining plate 114 also allows for initial separation of oil and water.

[0032] The oil pool material is a double-layer tank, consisting of an inner and outer layer. Under normal conditions, the tank body 1 of this embodiment stores no oil, only 5 cubic meters of water. Therefore, the SS double-layer tank was modified with an inner lining (to prevent internal water corrosion). An electronic leak detector 6 is also provided. If oil leaks through the inner layer to the outer layer, an alarm is triggered. Even if some oil leaks, it is confined to the cavity within the interlayer 105, eliminating the potential safety hazard. Accidental oil will not escape the tank, effectively preventing contamination.

[0033] The finished tank body 1 is manufactured in the factory, transported to the substation, and then constructed and installed in a reserved location. Compared with the traditional reinforced concrete accident oil pool construction, the construction period can be effectively shortened, which is environmentally friendly and improves the assembly efficiency of the substation.

[0034] To sum up, the utility model aims at the deficiencies in the design scheme of the accident oil pool in the prior art, and prefabricated and assembled design is carried out for the accident oil pool. After the optimized design, when there is no accident, if rainwater enters the accident oil pool, when the collection volume reaches a certain level, the rainwater retained in the tank body will be pumped out by the rainwater pump, reducing the workload of the operation and maintenance personnel for pumping water, and keeping the effective volume of the accident oil pool above 30 cubic meters, ensuring that it can be 100% collected in the event of an accident; at the same time, the double-layer tank design effectively solves the problem of anti-seepage of the accident oil pool; if leakage occurs inside, the electronic leak detector will trigger an alarm, and the leaked oil will also exist in the cavity; the prefabricated and assembled design is also convenient for engineering construction, therefore, the utility model has broad application prospects.

[0035] It should be emphasized that the above are only preferred embodiments of the present invention and do not constitute any form of limitation to the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A modular assembled emergency oil pool device, characterized in that: include: A tank body (1), an oil inlet pipe (2), a water outlet pipe (3), a rainwater outlet pipe (4), and an exhaust pipe (5); the tank body (1) is a sealed tank body; a partition (101) is provided in the inner cavity of the tank body (1) to separate the inner cavity of the tank body (1) into an oil chamber (102) and a water chamber (103) that are sealed and separated from each other in the horizontal direction; a reserved hole (104) is provided at the bottom of the partition (101); the two ends of the reserved hole (104) are respectively connected to the oil chamber (102) and the water chamber (103); the outer end of the oil inlet pipe (2) is connected to the accident oil input end of the substation; The inner end of the pipe (2) extends from the outside to the inside into the lower part of the oil cavity (102); the outer end of the water outlet pipe (3) is connected to the drain port; the inner end of the water outlet pipe (3) extends from the outside to the inside into the bottom of the water cavity (103); the outer end of the rainwater outlet pipe (4) is connected to the drain port; the inner end of the rainwater outlet pipe (4) extends from the outside to the inside into the bottom of the oil cavity (102); a rainwater pump (401) is provided at the inner end of the rainwater outlet pipe (4); the outer end of the exhaust pipe (5) is connected to the exhaust port; the inner end of the exhaust pipe (5) extends from the outside to the inside into the upper part of the water cavity (103); The inner port of the oil inlet pipe (2) is higher than the highest point of the reserved hole (104), the inner port of the water outlet pipe (3) is lower than the highest point of the reserved hole (104), and the water inlet of the rainwater pump (401) is lower than the inner port of the oil inlet pipe (2); The tank body (1) has a double-layer tank wall, with an inner and outer layer, and a sealed interlayer (105) is provided between the inner and outer double-layer tank walls of the tank body (1); A first manhole (106) and a second manhole (107) are provided on the upper portion of the tank body (1). The first manhole (106) communicates with the outside of the tank body (1) and the inside of the oil chamber (102), and the second manhole (107) communicates with the outside of the tank body (1) and the inside of the water chamber (103). The first manhole (106) and the second manhole (107) are respectively covered with manhole covers (108).

2. A modular assembled emergency oil pool device according to claim 1, characterized in that: The tank body (1) is cylindrical, and both ends of the cylinder of the tank body (1) are respectively provided with elliptical heads (109).

3. A modular assembled emergency oil pool device according to claim 2, characterized in that: A head support (110) and an inner support (111) are vertically provided in the tank body (1). The head support (110) and the inner support (111) are respectively in the shape of a 'M'-shaped frame. The head support (110) is supported at the mutually interpenetrating portion between the cylindrical portion of the tank body (1) and the elliptical portion of the elliptical head (109), and the inner support (111) is supported at the inner cavity of the cylindrical portion of the tank body (1).

4. The modular assembled emergency oil pool device according to claim 1, characterized in that: The manhole cover (108) is provided with a fixed portion (112) and a movable portion (113). The movable portion (113) is rotatably connected to the fixed portion (112) along a horizontal rotation axis. The oil inlet pipe (2), the water outlet pipe (3), the rainwater outlet pipe (4), and the exhaust pipe (5) respectively penetrate into the inner cavity of the tank body (1) from the fixed portion (112).

5. The modular assembled emergency oil pool device according to claim 1, characterized in that: The tank body (1) is provided with an electronic leak detector (6) and an electronic liquid level meter (7). The detection part of the electronic leak detector (6) is connected to the bottom of the interlayer (105), and the detection part of the electronic liquid level meter (7) vertically extends into the oil cavity (102) and / or the water cavity (103).

6. The modular assembled emergency oil pool device according to claim 1, characterized in that: A vertical water baffle (114) is provided at the lower portion of the oil chamber (102), and a water hole is provided at the lower portion of the water baffle (114). The water baffle (114) divides the lower portion of the oil chamber (102) into two parts along the length direction of the tank body (1). The inner end of the oil inlet pipe (2) and the reserved hole (104) are respectively located on both sides of the water baffle (114), and the upper edge of the water baffle (114) is higher than the height of the inner end of the oil inlet pipe (2).

7. The modular assembled emergency oil pool device according to claim 1, characterized in that: When the tank body (1) is buried underground, a first inspection well (8) and a second inspection well (9) are respectively provided at the first manhole (106) and the second manhole (107); the wellheads of the first inspection well (8) and the second inspection well (9) are higher than the ground; the bottoms of the first inspection well (8) and the second inspection well (9) are connected to the upper wall of the tank body (1); and the first manhole (106) and the second manhole (107) are respectively located in the first inspection well (8) and the second inspection well (9).

8. The modular assembled emergency oil pool device according to claim 1, characterized in that: The inner wall of the tank body (1) is made of stainless steel, and the outer wall of the tank body (1) is made of glass fiber reinforced plastic.

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