Box transformer accident oil collecting pipe and collecting device

Abstract

This invention provides a substation accident oil collection pipe and collection device, relating to the field of substation accident oil collection. The collection pipe has an outlet on its side wall, a first cover on the inner side of the side wall, and a second cover on the outer side. A first elastic element is provided between the first cover and the side wall, and a second elastic element is provided between the second cover and the side wall. The pipe section between the outlet and the inlet of the collection pipe can store water to a preset first height, and water to a preset second height can overcome the elastic forces of the first and second elastic elements. The preset second height is lower than the preset first height. The pressure exerted on the first cover by the substation accident oil at the preset first height is less than the elastic force of the first elastic element, and the pressure exerted on the second cover is less than the elastic force of the second elastic element. This collection pipe physically achieves oil-water separation by utilizing the pressure-bearing opening and closing of the elastic cover, ensuring that the space of the accident oil pool is almost not encroached upon, reducing daily maintenance workload, and avoiding the use of electrically controlled valves, thus simplifying maintenance.

Description

Technical Field

[0001] This invention relates to the technical field of emergency oil collection in transformer substations, and more specifically, to an emergency oil collection pipe and collection device for transformer substations. Background Technology

[0002] Prefabricated substations, also known as box-type substations, are typically located outdoors. In the event of an accident at a box-type substation, the oil inside needs to be collected to protect the environment and avoid waste.

[0003] However, in the existing technology, when it rains, rainwater will enter the emergency oil tank through the collection pipe, occupying the space of the emergency oil tank, seriously affecting the normal collection of oil discharged during transformer accidents, and also increasing the workload of operation and maintenance. Summary of the Invention

[0004] The first objective of this invention is to provide a transformer substation accident oil collection pipe to solve the technical problem in the prior art where rainwater flows into the accident oil pool through the transformer substation accident oil collection pipe during rain, encroaching on the space of the accident oil pool and affecting the collection of transformer substation accident oil.

[0005] The present invention provides a transformer substation emergency oil collection pipe, wherein the collection pipe has an outlet on its side wall, a first cover is provided on the inner side of the side wall, and a second cover is provided on the outer side. The first cover is rotatably connected to the lower part of the outlet, and the second cover is rotatably connected to the upper part of the outlet. A first elastic member is provided between the first cover and the side wall, which makes the first cover always tend to turn towards the outlet. A second elastic member is provided between the second cover and the side wall, which makes the second cover always tend to close the outlet. The pipe section between the outlet and the inlet of the collection pipe can store water to a preset first height, the density of which is greater than the density of the transformer substation accident oil; the water to a preset second height can overcome the elastic force of the first elastic element, causing the first cover to block the collection pipe, and can also overcome the elastic force of the second elastic element and open the second cover, allowing water to be discharged from the outlet, the preset second height being lower than the preset first height; the pressure of the transformer substation accident oil at the preset first height applied to the first cover is less than the elastic force of the first elastic element, and the pressure applied to the second cover is less than the elastic force of the second elastic element.

[0006] Furthermore, the collection pipe includes an oil inlet pipe section, an oil storage pipe section, and an oil-water separation pipe section connected in sequence. In use, the oil-water separation pipe section is vertically arranged, and the first cover and the second cover are both located on the oil-water separation pipe section.

[0007] Furthermore, the first cover can be rotated to a horizontal position, and a fixed support platform is provided on the inner side of the collection tube to support the first cover when it is in a horizontal position.

[0008] Furthermore, the fixed support platform is arranged in a ring shape along the circumference of the collection pipe; a first sealing ring is provided along the circumference of the edge of the first cover, the first sealing ring being used to seal the gap between the first cover and the inner wall of the collection pipe; and / or, a second sealing ring is provided on the inner side of the first cover, the second sealing ring being used to seal the gap between the first cover and the fixed support platform.

[0009] Optionally, the fixed support platform includes at least one protrusion; a third sealing ring is provided circumferentially along the edge of the first cover, the third sealing ring being used to seal the gap between the first cover and the inner wall of the collection tube.

[0010] Furthermore, a fourth sealing ring is provided circumferentially along the edge of the second cover, the fourth sealing ring being used to seal the gap between the second cover and the outer wall of the collection tube; and / or, a fifth sealing ring is provided on the inner side of the second cover, the fifth sealing ring being used to seal the gap between the second cover and the outer wall of the collection tube.

[0011] Furthermore, the collecting pipe is a circular pipe, the sidewall of the oil-water separation pipe section includes a planar area, and the water outlet is located in the planar area.

[0012] Furthermore, the first elastic element is a first spring or a first rubber element, and / or the second elastic element is a second spring or a second rubber element.

[0013] Furthermore, a pulling member is provided on the inward side of the first cover, the pulling member extending out of the oil outlet of the collection pipe, for manually pulling the first cover to rotate.

[0014] The transformer substation accident oil collection pipe provided by this invention can produce the following beneficial effects: The transformer substation accident oil collection pipe provided by the present invention has an outlet on its side wall. A first cover and a second cover are respectively provided inside and outside the outlet. The first cover always tends to turn towards the outlet under the action of a first elastic member, and the second cover always tends to close the outlet from the outside of the collection pipe under the action of a second elastic member.

[0015] During installation or before rain, the first cover can be rotated to block the collection pipe, and then water of a preset second height can be injected into the collection pipe. This allows the first cover to remain in the state of blocking the collection pipe below the outlet using only water, without opening the second cover.

[0016] In this way, when it rains, as rainwater continuously flows into the collection pipe, when the water level in the collection pipe is higher than the preset second height, it can overcome the elastic force of the second elastic element, open the second cover, and allow the water to be discharged from the outlet, instead of flowing into the accident oil pool through the collection pipe and encroaching on the space of the accident oil pool.

[0017] When a transformer accident occurs, because oil has a relatively low density, as water is continuously discharged from the collection pipe, the pressure applied to the first and second covers gradually decreases. When this pressure is insufficient to overcome the elastic force of the first and second elastic elements, the first cover will rotate towards the outlet under the action of the first elastic element, allowing water or oil to flow downwards into the accident oil pool. Of course, the second cover will also close the outlet under the action of the second elastic element.

[0018] In other words, the collection pipe provided by this invention uses physical methods to separate rainwater from oil in emergency situations, ensuring that the space of the emergency oil pool is almost not encroached upon, thus reducing the workload of daily operation and maintenance. Moreover, the oil-water separation is physically achieved through the pressure-bearing opening and closing of the flexible cover, avoiding the use of electrically controlled valves and reducing the difficulty of operation and maintenance.

[0019] The present invention provides a transformer substation accident oil collection device, which includes an accident oil pool and the aforementioned transformer substation accident oil collection pipe. The oil inlet of the collection pipe is connected to the transformer substation oil collection platform, and the oil outlet is connected to the oil inlet of the accident oil pool.

[0020] Furthermore, the collection device also includes an oil inlet cover, which is disposed at the oil inlet of the collection pipe.

[0021] The collection device provided by the present invention, because it includes the collection pipe mentioned above, can physically separate rainwater under normal circumstances from oil under accident conditions, can ensure that the space of the accident oil pool is hardly encroached upon, can reduce the workload of daily operation and maintenance, and has low operation and maintenance difficulty. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the transformer substation accident oil collection device provided in an embodiment of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3This is a schematic diagram of the structure of the transformer substation accident oil collection device after it has been filled with water, as provided in an embodiment of the present invention. Figure 4 for Figure 3 Enlarged view of point B in the middle; Figure 5 This is a schematic diagram of the structure of the transformer substation accident oil collection device under drainage conditions provided in an embodiment of the present invention; Figure 6 for Figure 5 Enlarged view of point C in the middle; Figure 7 This is a schematic diagram of the structure of the transformer substation accident oil collection device under the switching state of drainage and oil discharge according to an embodiment of the present invention. Figure 8 for Figure 7 Enlarged view of point D in the middle; Figure 9 This is a schematic diagram of the structure of the transformer substation accident oil collection device under the oil discharge state provided in an embodiment of the present invention; Figure 10 for Figure 9 Enlarged diagram of point E in the middle.

[0024] Figure captions: 010 - Water; 020 - Oil; 030 - Oil collection platform for transformer substation; 100 - Oil inlet pipe section; 200 - Oil storage pipe section; 300 - Oil-water separation pipe section; 310 - Water outlet; 320 - Fixed support platform; 400 - First cover; 500 - Second cover; 600 - Emergency oil pool; 700 - Oil inlet leak cover. Detailed Implementation

[0025] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0026] This embodiment provides a transformer substation accident oil collection pipe, such as... Figure 1 As shown, and in combination Figure 2As shown, the collecting pipe has an outlet 310 on its side wall, a first cover 400 on the inner side of the side wall, and a second cover 500 on the outer side. The first cover 400 is rotatably connected to the lower part of the outlet 310, and the second cover 500 is rotatably connected to the upper part of the outlet 310. A first elastic member is provided between the first cover 400 and the side wall, which ensures that the first cover 400 always tends to turn towards the outlet 310. A second elastic member is provided between the second cover 500 and the side wall, which ensures that the second cover 500 always tends to close the outlet 310. The trend is as follows: the pipe section between the outlet 310 and the oil inlet of the collection pipe can store water at a preset first height, the density of which is greater than the density of the transformer accident oil; the water at a preset second height can overcome the elastic force of the first elastic element, causing the first cover 400 to block the collection pipe, and can also overcome the elastic force of the second elastic element and open the second cover 500, allowing water to be discharged from the outlet 310; the preset second height is lower than the preset first height; the pressure of the transformer accident oil at the preset first height applied to the first cover 400 is less than the elastic force of the first elastic element, and the pressure applied to the second cover 500 is less than the elastic force of the second elastic element.

[0027] The transformer substation accident oil collection pipe provided in this embodiment has an outlet 310 on its side wall. A first cover 400 and a second cover 500 are respectively provided inside and outside the outlet 310. The first cover 400 always tends to turn towards the outlet 310 under the action of the first elastic member, and the second cover 500 always tends to close the outlet 310 from the outside of the collection pipe under the action of the second elastic member.

[0028] During installation or before rain, such as Figure 3 and Figure 4 As shown, the first cover 400 can be rotated to the position of blocking the collection pipe, and then water of a preset second height can be injected into the collection pipe. This allows the first cover 400 to be maintained below the outlet 310 of the collection pipe by water alone, without opening the second cover 500. Of course, in actual water filling, the amount of water to be filled needs to be determined based on practical experience. As long as it is within the allowable height error range and the first cover 400 is able to block the collection pipe without the second cover 500 opening, it is acceptable.

[0029] Thus, when it rains, as Figure 5 and Figure 6 As shown, as rainwater continuously flows into the collection pipe, when the water level in the collection pipe is higher than the preset second height, it can overcome the elastic force of the second elastic element, open the second cover 500, and allow the water to be discharged from the outlet 310, instead of flowing into the accident oil pool 600 through the collection pipe and encroaching on the space of the accident oil pool 600.

[0030] When the transformer substation fails, such as Figures 7 to 10As shown, since the density of oil 020 is relatively small, as water 010 is continuously discharged from the collection pipe, the pressure applied to the first cover 400 and the second cover 500 gradually decreases. When it is insufficient to overcome the elastic force of the first elastic element and the second elastic element, the first cover 400 will rotate towards the outlet 310 under the action of the first elastic element, so that water or oil can flow downward into the emergency oil pool 600. Of course, the second cover 500 will also close the outlet 310 under the action of the second elastic element.

[0031] In other words, the collection pipe provided in this embodiment uses physical methods to separate rainwater under normal conditions from oil under emergency conditions, ensuring that the space of the emergency oil tank 600 is almost not encroached upon, reducing the workload of daily operation and maintenance. Moreover, the oil-water separation is physically achieved through the pressure-bearing opening and closing of the flexible cover, avoiding the use of electrically controlled valves and reducing the difficulty of operation and maintenance.

[0032] Specifically, in this embodiment, the collection pipe includes an oil inlet pipe section 100, an oil storage pipe section 200, and an oil-water separation pipe section 300 connected in sequence. In use, the oil-water separation pipe section 300 is vertically arranged, and the first cover 400 and the second cover 500 are both located in the oil-water separation pipe section 300. Of course, in other embodiments of this application, the collection pipe can also be a vertical straight pipe.

[0033] More specifically, in this embodiment, the collection pipe is a circular pipe, and the sidewall of the oil-water separation pipe section 300 includes a planar area, with the outlet 310 disposed in the planar area. In this configuration, the outlet 310, the first cover 400, and the second cover 500 are all disposed in the planar area, which facilitates installation.

[0034] Specifically, in this embodiment, as Figure 4 As shown, the first cover 400 can rotate to a horizontal position. A fixed support platform 320 is provided on the inner side of the collection pipe to support the first cover 400 when it is in a horizontal position. In this configuration, the fixed support platform 320 serves both to support the first cover 400 and to limit the first cover 400 from rotating further downward.

[0035] Specifically, in this embodiment, the fixed support platform 320 is arranged in a ring shape along the circumference of the collection pipe; a first sealing ring is arranged along the circumference of the edge of the first cover 400, which is used to seal the gap between the first cover 400 and the inner wall of the collection pipe; or, a second sealing ring is arranged on the inner side of the first cover 400, which is used to seal the gap between the first cover 400 and the fixed support platform 320; of course, a first sealing ring and a second sealing ring can be arranged at the same time to ensure that the first cover 400 can tightly seal the collection pipe when it blocks the collection pipe, and prevent water from flowing into the accident oil pool 600 through the collection pipe.

[0036] It should be noted that in other embodiments of this application, the fixed support platform 320 may also have other structural forms. For example, the fixed support platform 320 may include at least one protrusion. In this case, the edge of the first cover 400 may be provided with a third sealing ring in the circumferential direction. The third sealing ring is used to seal the gap between the first cover 400 and the inner wall of the collection tube.

[0037] Specifically, in this embodiment, a fourth sealing ring is provided circumferentially along the edge of the second cover 500, which is used to seal the gap between the second cover 500 and the outer wall of the collection pipe; or, a fifth sealing ring is provided on the inner side of the second cover 500, which is used to seal the gap between the second cover 500 and the outer wall of the collection pipe; of course, both the fourth and fifth sealing rings can be provided at the same time to double guarantee the sealing between the second cover 500 and the outer wall of the collection pipe, ensuring that the second cover 500 can tightly seal the outlet 310 when it is closed, so that water will not flow out.

[0038] Specifically, in this embodiment, the first elastic element is a first spring, and the second elastic element is a second spring. However, it should be noted that in other embodiments of this application, the first elastic element can also be a first rubber element, and the second elastic element can also be a second rubber element, as long as the elastic force requirement can be met.

[0039] Specifically, in this embodiment, a pulling member (not shown) is provided on the inward-facing side of the first cover 400. The pulling member extends beyond the oil outlet of the collection pipe and is used to manually pull the first cover 400 to rotate. During the water filling stage, the pulling member can be pulled downward from the oil outlet of the collection pipe to overcome the elastic force of the first elastic member, causing the first cover 400 to block the collection pipe. More specifically, the pulling member can be a rope or the like.

[0040] This embodiment also provides a transformer substation accident oil collection device, including an accident oil tank 600 and the aforementioned transformer substation accident oil collection pipe. The oil inlet of the collection pipe is connected to the transformer substation oil collection platform 030, and the oil outlet is connected to the oil inlet of the accident oil tank 600. Because the collection device provided in this embodiment includes the aforementioned collection pipe, it can physically separate rainwater from oil in an accident situation, ensuring that the space of the accident oil tank 600 is almost not encroached upon, reducing daily maintenance workload, and simplifying maintenance.

[0041] Specifically, in this embodiment, as Figure 1 As shown, the collection device also includes an oil inlet cover 700, which is disposed at the oil inlet of the collection pipe. Preferably, the oil inlet cover 700 can allow water and oil to pass through, and can also effectively prevent foreign objects such as leaves from entering the collection pipe, thus playing a filtering role.

[0042] Specifically, in this embodiment, when the transformer substation structure adopts a pile and steel platform scheme, the emergency oil pool 600 can be placed on the ground.

[0043] In summary, this embodiment provides a transformer substation accident oil collection device. The transformer substation accident oil collection pipe uses an elastic cover to physically separate rainwater and oil, greatly reducing the encroachment of rainwater on the accident oil pool 600 space, and the operation and maintenance workload is small and the difficulty is low.

[0044] Figure 1 , Figure 3 , Figure 5 , Figure 7 , Figure 9 The following is a schematic diagram showing the collection device provided in this embodiment in different states. A further summary based on the diagram is provided below: Figure 1 The collection device is currently in the installation phase, the collection pipe is empty, and neither the first cover 400 nor the second cover 500 is yet in place. (Refer to...) Figure 2 .

[0045] Figure 3 and Figure 4 In the middle, the collection pipe is filled with water, the first cover 400 is in a horizontal state, after the water is filled, the water pressure on the upper surface of the first cover 400 is greater than the rebound force of the first cover 400, and the water pressure on the second cover 500 is less than the rebound force of the second cover 500. The outlet 310 is in a closed state and the water will not flow out.

[0046] Figure 5 and Figure 6 During rainfall, as the collection pipe continues to fill with water, the water pressure on both the first cover 400 and the second cover 500 increases. The first cover 400 remains horizontal, while the second cover 500 opens when the water pressure exceeds the rebound force, allowing excess water to drain out. When the rainwater in the collection pipe decreases to a level insufficient to open the second cover 500, the second cover 500 will automatically close.

[0047] Figure 7 and Figure 8 In the process of a transformer substation accident, oil needs to be collected. As the water in the collection pipe is gradually replaced by the accident oil, since the density of oil is less than that of water, according to the pressure formula P=ρgh, under the same pipe length, when the density of the medium decreases, the pressure at the same location will decrease. Therefore, the pressure on the second cover 500 will decrease. When it is less than the rebound force applied to it by the second elastic element, the second cover 500 will gradually return to the position of closing the water outlet 310. The pressure on the first cover 400 will also decrease. When the pressure on the first cover 400 is less than the rebound force on the first cover 400, the first cover 400 will gradually return to the position of closing the outlet 310. Figure 9 and Figure 10 The upright position ensures that the oil flows to the emergency oil pool 600 below.

[0048] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0049] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A transformer substation accident oil collection pipe, characterized in that, The collecting pipe has an outlet (310) on its side wall, a first cover (400) on the inner side of the side wall, and a second cover (500) on the outer side. The first cover (400) is rotatably connected to the bottom of the outlet (310), and the second cover (500) is rotatably connected to the top of the outlet (310). A first elastic member is provided between the first cover (400) and the side wall, which makes the first cover (400) always tend to turn towards the outlet (310). A second elastic member is provided between the second cover (500) and the side wall, which makes the second cover (500) always tend to close the outlet (310). The pipe section between the outlet (310) and the inlet of the collection pipe can store water to a preset first height, and the density of the water is greater than the density of the transformer substation accident oil. The water at the preset second height can overcome the elastic force of the first elastic element, causing the first cover (400) to block the collection pipe, and can overcome the elastic force of the second elastic element and open the second cover (500), allowing water to be discharged from the outlet (310). The preset second height is lower than the preset first height. The pressure of the transformer accident oil at the preset first height applied to the first cover (400) is less than the elastic force of the first elastic element, and the pressure applied to the second cover (500) is less than the elastic force of the second elastic element.

2. The transformer substation accident oil collection pipe according to claim 1, characterized in that, The collection pipe includes an oil inlet pipe section (100), an oil storage pipe section (200), and an oil-water separation pipe section (300) connected in sequence. When in use, the oil-water separation pipe section (300) is vertically arranged, and the first cover door (400) and the second cover door (500) are both located in the oil-water separation pipe section (300).

3. The transformer substation accident oil collection pipe according to claim 1, characterized in that, The first cover (400) can be rotated to a horizontal position, and a fixed support platform (320) is provided on the inner side of the collection tube to support the first cover (400) in the horizontal position.

4. The transformer substation accident oil collection pipe according to claim 3, characterized in that, The fixed support platform (320) is arranged in a ring shape along the circumference of the collection pipe; the edge of the first cover (400) is provided with a first sealing ring along the circumference, the first sealing ring being used to seal the gap between the first cover (400) and the inner wall of the collection pipe; and / or, the inner side of the first cover (400) is provided with a second sealing ring, the second sealing ring being used to seal the gap between the first cover (400) and the fixed support platform (320); Alternatively, the fixed support platform (320) includes at least one protrusion; the edge of the first cover (400) is provided with a third sealing ring along the circumferential direction, the third sealing ring being used to seal the gap between the first cover (400) and the inner wall of the collection tube.

5. The transformer substation accident oil collection pipe according to claim 3, characterized in that, The edge of the second cover (500) is provided with a fourth sealing ring along the circumferential direction. The fourth sealing ring is used to seal the gap between the second cover (500) and the outer wall of the collection tube. And / or, a fifth sealing ring is provided on the inner side of the second cover (500), the fifth sealing ring being used to seal the gap between the second cover (500) and the outer wall of the collection tube.

6. The transformer substation accident oil collection pipe according to claim 2, characterized in that, The collection pipe is a circular pipe, and the side wall of the oil-water separation pipe section (300) includes a planar area, and the outlet (310) is located in the planar area.

7. The transformer substation accident oil collection pipe according to claim 1, characterized in that, The first elastic element is a first spring or a first rubber element, and / or the second elastic element is a second spring or a second rubber element.

8. The transformer substation accident oil collection pipe according to claim 1, characterized in that, A pull member is provided on the inward side of the first cover (400), and the pull member extends to the oil outlet of the collection pipe for manually pulling the first cover (400) to rotate.

9. A device for collecting emergency oil in a transformer substation, characterized in that, It includes an accident oil pool (600) and a transformer substation accident oil collection pipe as described in any one of claims 1-8, wherein the oil inlet of the collection pipe is connected to the transformer substation oil collection platform (030), and the oil outlet is connected to the oil inlet of the accident oil pool (600).

10. The transformer substation accident oil collection device according to claim 9, characterized in that, The collection device also includes an oil inlet cover (700), which is disposed at the oil inlet of the collection pipe.

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