Substation accident oil pool

Abstract

The utility model relates to the technical field of accident oil pools, and discloses a transformer substation accident oil pool which comprises a water distribution pool, an oil separation pool and an oil storage pool which are sequentially arranged, a water inlet pipe is arranged on the side, away from the oil separation pool, of the water distribution pool, a first partition wall is arranged between the water distribution pool and the oil separation pool, and a second partition wall is arranged between the oil separation pool and the oil storage pool. A plurality of water distribution holes are formed in the upper portion of the first partition wall and distributed at intervals in the horizontal direction, the water distribution holes are communicated with the liquid level of the water distribution tank and the liquid level of the oil separation tank, and the pipe bottom of the water inlet pipe is not lower than the hole top of the water distribution holes; a first pit is formed in one side, far away from the water distribution tank, of the bottom of the oil separation tank, and a water outlet pipe corresponding to the first pit is arranged on the oil separation tank; an oil passing groove is further formed in the oil separation tank, the length direction of the oil passing groove extends in the horizontal plane, one end of the oil passing groove is fixedly connected with the first partition wall, the other end of the oil passing groove communicates with the oil storage tank, and an upper opening is formed in the oil passing groove so that accident oil in the oil separation tank can flow into the oil passing groove through the upper opening.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of accident oil pool, especially to a substation accident oil pool. BACKGROUND

[0002] In the power grid system, the substation is the important place for voltage and current transformation and power distribution. The accident oil pool is an indispensable structure of the substation, mainly giving consideration to the functions of oil-water separation and accident oil storage.

[0003] According to the "fire power plant and substation design fire prevention standard" (GB50229) provisions: "outdoor single oil volume is 1000kg above electrical equipment, should set up oil or oil retaining facilities, its volume should be designed according to 20% of the equipment oil volume, and can be arranged to the total accident oil pool. The capacity of the total accident oil pool should be determined according to the maximum oil volume of the connected equipment, and the oil-water separation device should be set. When the above requirements cannot be met, the oil storage facilities capable of accommodating the total oil volume of the corresponding electrical equipment should be set, and the oil-water separation device should be set. " The oil discharge condition of the transformer is usually a fire accident, and a large amount of fire-fighting water and transformer accident oil mixed into the accident oil pool when handling the fire.

[0004] Although the existing accident oil pool is provided with a space for oil-water separation, but the short-time large-flow oil-water mixture causes impact on the internal stored water, the oil-water separation is not complete, the water outlet is mixed with part of the accident oil, and the surrounding environment is easily polluted. INVENTION CONTENTS

[0005] The technical problem to be solved by the utility model is that the short-time large-flow oil-water mixture causes impact on the internal stored water, the oil-water separation is not complete, the water outlet is mixed with part of the accident oil, and the surrounding environment is easily polluted.

[0006] In order to solve the above technical problem, the utility model provides a technical scheme of a substation accident oil pool:

[0007] The substation accident oil pool comprises water distribution pool, oil separation pool and oil storage pool arranged in sequence, the water distribution pool is provided with a water inlet pipe away from one side of the oil separation pool, a first partition wall is arranged between the water distribution pool and the oil separation pool, and a second partition wall is arranged between the oil separation pool and the oil storage pool.

[0008] A plurality of water distribution holes are formed in the upper part of the first partition wall, the plurality of water distribution holes are distributed along the horizontal direction at intervals, the water distribution holes are connected between the liquid surface of the water distribution pool and the liquid surface of the oil separation pool, and the bottom of the water inlet pipe is arranged not lower than the top of the water distribution hole.

[0009] The bottom of the oil separation tank is provided with a first pit away from one side of the water distribution tank, the oil separation tank is provided with a water outlet pipe corresponding to the first pit, the lower end of the water outlet pipe is spaced apart from the bottom surface of the first pit, and the water outlet of the water outlet pipe is arranged at a height not higher than the top of the water inlet pipe.

[0010] The inside of the oil separation tank is further provided with an oil passing groove, the length direction of the oil passing groove is arranged along the horizontal plane, one end of the oil passing groove is fixedly connected with the first partition wall, the other end of the oil passing groove is communicated with the oil storage tank, and the oil passing groove is provided with an upper opening for the accident oil in the oil separation tank to flow into the oil passing groove through the upper opening.

[0011] Further, the oil passing groove is arranged on the lower side of the water inlet pipe, and the oil passing groove is arranged opposite to the water inlet direction of the water inlet pipe.

[0012] Further, the oil passing groove is a circular arc groove, and the upper edge of the side wall of the oil passing groove is not lower than the center height of the water distribution hole.

[0013] Further, the upper edge of the first partition wall is not lower than the center height of the water inlet pipe.

[0014] Further, the water distribution hole is a square hole, the top of the water distribution hole is arranged flush with the bottom of the water inlet pipe, and the upper edge of the side wall of the oil passing groove is arranged between the top of the water distribution hole and the center height of the water distribution hole.

[0015] Further, the first partition wall is provided with a rounded corner edge corresponding to the upper edge of one side of the oil separation tank, and the second partition wall is higher than the first partition wall.

[0016] Further, the water outlet pipe comprises a vertical pipe section and a horizontal pipe section, the horizontal pipe section is connected to the upper part of the vertical pipe section, the lower end of the vertical pipe section is further provided with a water suction horn structure, and a support is arranged between the water suction horn structure and the bottom surface of the first pit.

[0017] Further, the bottom of the horizontal pipe section is flush with the center height of the water distribution hole, and the pipe diameter of the water outlet pipe is equal to the pipe diameter of the water inlet pipe.

[0018] Further, the bottom of the oil storage tank is further provided with a second pit for accommodating the oil pump.

[0019] Further, the volume of the oil separation tank is any size between two times and four times the volume of the oil storage tank, the water distribution hole, the oil separation tank and the upper part of the oil storage tank are all provided with an inspection hole, the inspection hole of the oil storage tank is arranged higher than the ground and is provided with a closing cover plate.

[0020] The substation accident oil pool has the beneficial effects that: the substation accident oil pool adopts the design form of the water distribution pool, the oil separation pool and the oil storage pool arranged in sequence, the water inlet pipe is arranged on the side, away from the oil separation pool, of the water distribution pool, the first partition wall is arranged between the water outlet pipe, the water distribution pool and the oil separation pool, the second partition wall is arranged between the oil separation pool and the oil storage pool, and a plurality of water distribution holes are arranged in the upper portion of the first partition wall.

[0021] The bottom of the oil separation pool, away from the water distribution pool, is provided with a first pit, and the oil separation pool is provided with a water outlet pipe corresponding to the first pit, and the lower end of the water outlet pipe is spaced apart from the bottom surface of the first pit in an up-down direction.

[0022] In addition, the oil separation pool is further provided with an oil passing groove, the length direction of the oil passing groove extends along the horizontal plane, one end of the oil passing groove is fixedly connected with the first partition wall, the other end of the oil passing groove is communicated with the oil storage pool, and the oil passing groove is provided with an upper opening. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a plan view of the substation accident oil pool in the embodiment of the utility model;

[0024] Figure 2 is Figure 1 a sectional view of A-A in the embodiment;

[0025] Figure 3 is Figure 1 a sectional view of B-B in the embodiment;

[0026] Figure 4 is Figure 1 a sectional view of C-C in the embodiment;

[0027] Figure 5It is the side view schematic diagram of the oil passing groove in the embodiment of the utility model;

[0028] In the drawing: 1-distributing pool, 10-first partition wall, 11-water inlet pipe, 12-distributing hole, 13-chamfered edge, 2-oil separation pool, 20-second partition wall, 21-first pit, 22-water outlet pipe, 221-vertical pipe section, 222-horizontal pipe section, 223-water suction horn structure, 224-bracket, 23-oil passing groove, 230-upper opening, 3-oil storage pool, 30-second pit, 31-inspection hole, 32-closed cover plate. DETAILED DESCRIPTION

[0029] The specific embodiments of the utility model will be further described in detail below in combination with the drawings and embodiments. The following embodiments are used to illustrate the utility model, but not to limit the scope of the utility model.

[0030] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like in the utility model are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0031] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0032] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, or the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0033] As Figures 1 to 5The utility model discloses an accident oil pool of transformer substation, including the water distribution pool 1, the oil separation pool 2 and the oil storage pool 3 of arranging in proper order, the side of water distribution pool 1 far from oil separation pool 2 is equipped with the water inlet pipe 11, and the first partition wall 10 is equipped between water distribution pool 1 and oil separation pool 2, and the second partition wall 20 is equipped between oil separation pool 2 and oil storage pool 3, the upper portion of first partition wall 10 is equipped with a plurality of water distribution hole 12, a plurality of water distribution hole 12 are spaced apart along the horizontal direction distribution, and water distribution hole 12 is connected in the liquid level of water distribution pool 1 and the liquid level of oil separation pool 2, and the pipe bottom of water inlet pipe 11 is arranged not lower than the hole top of water distribution hole 12.

[0034] The side of the bottom of oil separation pool 2 far from water distribution pool 1 is equipped with the first pit 21, and the water outlet pipe 22 is arranged corresponding to the first pit 21 of oil separation pool 2, and the lower end of water outlet pipe 22 is spaced apart distribution with the bottom surface of first pit 21, and the water outlet of water outlet pipe 22 is arranged not higher than the pipe top of water inlet pipe 11, and the inside of oil separation pool 2 is further equipped with the oil passing groove 23, and the length direction of oil passing groove 23 is arranged along the horizontal plane, and one end of oil passing groove 23 is fixedly connected with first partition wall 10, and the other end of oil passing groove 23 is connected with oil storage pool 3, and oil passing groove 23 is equipped with the upper open mouth 230, so that the accident oil in oil separation pool 2 flows into oil passing groove 23 through the upper open mouth 230.

[0035] The accident oil pool of transformer substation adopts the design form of water distribution pool 1, oil separation pool 2 and oil storage pool 3 arranged in proper order, the side of water distribution pool 1 far from oil separation pool 2 is provided with water inlet pipe 11, and the water outlet pipe 22 is arranged between water distribution pool 1 and oil separation pool 2, and the second partition wall 20 is arranged between oil separation pool 2 and oil storage pool 3, and a plurality of water distribution holes 12 are arranged in the upper portion of first partition wall 10. Oil-water mixture flows into water distribution pool 1 through water inlet pipe 11, and water distribution pool 1 plays the role of buffering water flow and uniform distribution, and since the water distribution holes 12 are spaced apart along the horizontal direction and are connected to the liquid level of water distribution pool 1 and the liquid level of oil separation pool 2, the upper liquid of water distribution pool 1 can flow into oil separation pool 2 evenly through the water distribution holes 12, so that the oil-water separation of oil-water mixture in oil separation pool 2 is stable.

[0036] The side of the bottom of oil separation pool 2 far from water distribution pool 1 is equipped with the first pit 21, and the water outlet pipe 22 is arranged corresponding to the first pit 21 of oil separation pool 2, and the lower end of water outlet pipe 22 is spaced apart distribution with the bottom surface of first pit 21. The first pit 21 is far from water distribution pool 1 and is at the bottom of oil separation pool 2, and the oil-water mixture in oil separation pool 2 realizes oil-water separation under the action of density difference, that is, water is in the lower layer and oil is in the upper layer, and the sinking design of the first pit 21 reduces the water flow disturbance when discharging, and can smoothly discharge the pure water outward through the water outlet pipe 22.

[0037] In addition, the oil separation tank 2 is internally provided with an oil passing groove 23, the length direction of the oil passing groove 23 extends along the horizontal plane, one end of the oil passing groove 23 is fixedly connected with the first partition wall 10, the other end of the oil passing groove 23 is communicated with the oil storage tank 3, and the oil passing groove 23 is provided with an upper opening 230. That is, the oil passing groove 23 is arranged in the interior of the oil separation tank 2 and is communicated with the oil storage tank 3, the accident oil in the oil separation tank 2 flows into the oil passing groove 23 through the upper opening 230, the oil passing groove 23 guides the upper accident oil to the oil storage tank 3, and finally the pure accident oil is collected through the oil storage tank 3. Compared with the prior art, the impact of the short-time large-flow oil-water mixture on the internal water storage can be avoided, the oil-water separation is more thorough, the water mixed with part of the accident oil is prevented, and the pollution to the surrounding environment is reduced.

[0038] In the embodiment, the oil passing groove 23 is arranged on the lower side of the water inlet pipe 11, and the oil passing groove 23 is arranged opposite to the water inlet direction of the water inlet pipe 11. That is, the water inlet direction of the water inlet pipe 11 and the flow direction of the oil passing groove 23 are vertically and horizontally distributed in parallel, so that the oil passing groove 23 can effectively collect the upper accident oil. In addition, the oil passing groove 23 is a circular arc groove, the upper edge of the side wall of the oil passing groove 23 is not lower than the center height of the water distribution hole 12, so that the oil-water mixture entering through the water distribution hole 12 is prevented from directly flowing into the oil passing groove 23, thereby ensuring the purity of the upper accident oil collected by the oil passing groove 23.

[0039] As a further preferred scheme, the upper edge of the first partition wall 10 is not lower than the center height of the water inlet pipe 11. In addition, the water distribution hole 12 is a square hole, the hole top of the water distribution hole 12 is arranged in parallel with the pipe bottom of the water inlet pipe 11, and the upper edge of the side wall of the oil passing groove 23 is arranged between the hole top of the water distribution hole 12 and the center height of the water distribution hole 12. The first partition wall 10 is provided with a rounded corner edge 13 corresponding to the upper edge of one side of the oil separation tank 2, and the second partition wall 20 is higher than the first partition wall 10.

[0040] Specifically, the length and width dimensions of the water distribution hole 12 are 200mm*200mm, the center height of the water distribution hole 12 is flush with the liquid level of the oil storage tank 3, the upper edge of the first partition wall 10 is 200mm higher than the hole top of the water distribution hole 12, the pipe bottom of the water inlet pipe 11 is flush with the hole top of the water distribution hole 12, the pipe bottom of the water outlet pipe 22 is 100mm lower than the pipe bottom of the water inlet pipe 11, and the upper edge of the side wall of the oil passing groove 23 is 50mm higher than the center height of the water distribution hole 12.

[0041] In the embodiment, the water outlet pipe 22 comprises a vertical pipe section 221 and a horizontal pipe section 222, the horizontal pipe section 222 is connected to the upper part of the vertical pipe section 221, and the lower end of the vertical pipe section 221 is further provided with a water suction horn structure 223, and a support 224 is arranged between the water suction horn structure 223 and the bottom surface of the first recess 21. The water suction horn structure 223 is arranged at the lower end of the vertical pipe section 221, so that the suction flow during water discharge can be increased, and the support 224 can effectively separate the water suction horn structure 223 and the bottom surface of the first recess 21, so as to prevent the problem of water outlet blockage caused by foreign matters. In addition, the pipe bottom of the horizontal pipe section 222 is flush with the center height of the water distribution hole 12, and the pipe diameter of the water outlet pipe 22 is equal to the pipe diameter of the water inlet pipe 11.

[0042] In addition, the bottom of the oil storage pool 3 is further provided with a second recess 30, and the second recess 30 is used for accommodating the oil pumping pump, so as to ensure the stable and reliable position of the oil pumping pump. The volume of the oil separation pool 2 is any size between two times and four times of the volume of the oil storage pool 3, and the upper part of the water distribution hole 12, the oil separation pool 2 and the oil storage pool 3 is provided with an inspection hole 31, the inspection hole 31 of the oil storage pool 3 is arranged higher than the ground and is provided with a closing cover plate 32. It should be noted that the effective volume of the oil separation pool 2 is designed to be 75% of the oil volume of the maximum one main transformer, and the effective volume of the oil storage pool 3 is designed to be 25% of the oil volume of the maximum one main transformer. The inspection hole 31 of the oil storage pool 3 is arranged 300mm higher than the ground, and the closing cover plate 32 is buckled at the inspection hole 31 of the oil storage pool 3, which can effectively prevent the ground water from flowing into the oil storage pool 3, and ensure the purity of the accident oil in the oil storage pool 3.

[0043] The above only describes the preferred embodiments of the present application, and it should be noted that for ordinary skilled persons in the technical field, some improvements and replacements can be made without departing from the technical principles of the present application, and these improvements and replacements should also be regarded as the protection scope of the present application.

Claims

1. A transformer substation accident oil sump, characterized in that The device comprises a water distribution tank, an oil separation tank and an oil storage tank arranged in sequence, the water distribution tank is provided with a water inlet pipe on the side away from the oil separation tank, a first partition wall is arranged between the water distribution tank and the oil separation tank, and a second partition wall is arranged between the oil separation tank and the oil storage tank; A plurality of water distribution holes are arranged in the upper part of the first partition wall and are distributed along the horizontal direction, the water distribution holes are connected to the liquid surface of the water distribution tank and the liquid surface of the oil separation tank, and the bottom of the water inlet pipe is arranged at a position not lower than the top of the water distribution hole; A first pit is arranged on the bottom of the oil separation tank away from the water distribution tank, a water outlet pipe is arranged on the oil separation tank corresponding to the first pit, the lower end of the water outlet pipe is arranged at a position spaced apart from the bottom surface of the first pit, and the water outlet of the water outlet pipe is arranged at a position not higher than the top of the water inlet pipe; An oil passing groove is further arranged in the oil separation tank, the length direction of the oil passing groove extends along the horizontal plane, one end of the oil passing groove is fixedly connected to the first partition wall, the other end of the oil passing groove is connected to the oil storage tank, and the oil passing groove is open at the top to allow the emergency oil in the oil separation tank to flow into the oil passing groove through the open top.

2. The transformer substation accident sump of claim 1, wherein, The oil passing groove is arranged on the lower side of the water inlet pipe, and the oil passing groove is arranged opposite to the water inlet direction of the water inlet pipe.

3. The transformer substation accident sump of claim 1, wherein, The oil passing groove is a circular arc groove, and the upper edge of the side wall of the oil passing groove is arranged at a position not lower than the center height of the water distribution hole.

4. The transformer substation accident sump of claim 1, wherein, The upper edge of the first partition wall is arranged at a position not lower than the center height of the water inlet pipe.

5. The transformer substation accident sump of claim 1, wherein, The water distribution hole is a square hole, the top of the water distribution hole is arranged flush with the bottom of the water inlet pipe, and the upper edge of the side wall of the oil passing groove is arranged between the top of the water distribution hole and the center height of the water distribution hole.

6. The transformer substation accident sump of claim 5, wherein, The first partition wall is provided with a rounded corner edge corresponding to the upper edge of the side of the oil separation tank, and the second partition wall is arranged higher than the first partition wall.

7. The transformer substation accident sump of claim 1, wherein, The water outlet pipe comprises a vertical pipe section and a horizontal pipe section, the horizontal pipe section is connected to the upper part of the vertical pipe section, the lower end of the vertical pipe section is further provided with a water suction horn structure, and a support is arranged between the water suction horn structure and the bottom surface of the first pit.

8. The transformer substation accident sump of claim 7, wherein, The bottom of the horizontal pipe section is arranged flush with the center height of the water distribution hole, and the pipe diameter of the water outlet pipe is equal to the pipe diameter of the water inlet pipe.

9. The transformer substation accident sump of claim 1, wherein, The bottom of the oil storage tank is further provided with a second pit for accommodating the oil pump.

10. The transformer substation accident sump of claim 1, wherein, The volume of the oil separation tank is between two times and four times the volume of the oil storage tank, and the upper part of the water distribution hole, the oil separation tank and the oil storage tank is provided with an inspection hole, the inspection hole of the oil storage tank is arranged higher than the ground and is provided with a closing cover plate.

Images