Corrosion-resistant transformer substation accident oil pool
By employing a multi-layered anti-corrosion structure in the substation emergency oil tank, including a substrate layer, epoxy resin primer, putty, and fiberglass cloth lining, the corrosion problem of Q235B carbon steel oil storage tank in complex environments was solved, achieving effective anti-corrosion and anti-seepage effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-06
- Publication Date
- 2026-04-17
AI Technical Summary
Existing substation accident oil tanks have poor corrosion resistance in complex soil environments, especially Q235B carbon steel oil tanks which are prone to rust and lack multi-layered anti-corrosion structures.
It adopts a multi-layer anti-corrosion structure, including a substrate layer, epoxy resin primer, epoxy resin and quartz powder putty, glass cloth backing and multi-layer topcoat. Through strict welding and brushing processes, a solid protective shell is formed to ensure the strong connection and corrosion resistance of each layer.
It effectively prevents corrosion and water seepage, improves the corrosion resistance of the oil tank, avoids rusting, and ensures the stability and safety of the equipment.
Smart Images
Figure CN224134322U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of integrated emergency oil tank equipment for substations, specifically a corrosion-resistant emergency oil tank for substations. Background Technology
[0002] A substation emergency oil tank is an integrated, functional device for storing and treating wastewater containing transformer oil. Through comprehensive treatment, it meets environmental emission requirements. The device consists of an oil storage tank, a treatment tank, electrical control equipment, and a software system. Existing integrated emergency oil tanks primarily use Q235B carbon steel and 12CrMo steel for the oil storage tank and SUS304 stainless steel for the treatment tank. Q235B carbon steel has extremely unstable corrosion resistance. Although current applications apply anti-rust paint and asphalt coating, it is prone to corrosion in complex soil environments and corrosive transformer oil-water mixtures. Existing emergency oil tanks have simple layers and poor corrosion resistance, lacking a multi-layered anti-corrosion structure. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a corrosion-resistant substation accident oil tank, which can solve the problems in the prior art.
[0004] This utility model is achieved through the following technical solution: A corrosion-resistant substation accident oil tank of this utility model includes an oil tank, which is formed by splicing and welding a substrate layer. The feature is that one side of the substrate layer is provided with a first primer, a first putty adhesive layer, a first liner, a first adhesive layer, a third liner, a first topcoat, and a third topcoat, and the other side of the substrate layer is provided with a second primer, a second putty adhesive layer, a second liner, a second adhesive layer, a fourth liner, a second topcoat, and a fourth topcoat.
[0005] In a further technical solution, the substrate layer is made of iron.
[0006] In a further technical solution, the substrate layer is made of Q235B carbon steel.
[0007] In a further technical solution, the first primer and the second primer are epoxy resin primers.
[0008] A further technical solution is that the first putty adhesive layer and the second putty adhesive layer are made of epoxy resin and quartz powder putty.
[0009] In a further technical solution, the first backing, the second backing, the third backing, and the fourth backing are made of glass cloth.
[0010] In a further technical solution, the first adhesive layer and the second adhesive layer are made of epoxy resin paint.
[0011] In a further technical solution, the thickness of the first primer and the second primer is greater than or equal to 0.1 mm.
[0012] In a further technical solution, the thickness of the first putty adhesive layer and the second putty adhesive layer is greater than or equal to 0.1 mm.
[0013] In a further technical solution, the thickness of the first topcoat, the second topcoat, the third topcoat, and the fourth topcoat is greater than or equal to 0.1 mm.
[0014] Advantageously, the first liner includes a plurality of first glass cloths and second glass cloths, the first glass cloths are attached and fixedly disposed side by side on the inner bottom of the oil tank, the second glass cloths are disposed on the four sides of the inner end wall of the oil tank, and the width of the second glass cloths is fixedly bonded to the inner end wall of the oil tank and the upper end face of the first glass cloths.
[0015] Advantageously, the third lining includes multiple third and fourth glass cloths. The third glass cloth is attached and fixed to the upper end face of the first glass cloth. The third glass cloth is abutted and fixed to the end face of the second glass cloth. The seam of the third glass cloth is not aligned with the seam of the first glass cloth. The seam of the third glass cloth is not aligned with the seam of the second glass cloth. The fourth glass cloth is attached and fixed to one side of the second glass cloth. The fourth glass cloth is fixed to the upper end face of the third glass cloth. The seam of the fourth glass cloth is not aligned with the seam of the second glass cloth.
[0016] Advantageously, the second liner includes a plurality of fifth and sixth glass cloths, the fifth glass cloths being fixed to the bottom of the outer end face of the oil bath, the sixth glass cloths being fixed to the four sides of the oil bath, and the sixth glass cloths being attached to and fixed to the upper end face of the fifth glass cloths.
[0017] Advantageously, the fourth lining includes a plurality of seventh and eighth glass cloths, the seventh glass cloths being attached and fixed to the lower end face of the fifth glass cloth, a plurality of eighth glass cloths being fixedly disposed on the top of the seventh glass cloths, the eighth glass cloths being attached and fixed to the outer surface of the sixth glass cloths, the seams of the seventh glass cloths being misaligned with the seams of the fifth glass cloths, and the seams of the eighth glass cloths being misaligned with the seams of the sixth glass cloths.
[0018] The beneficial effects of this utility model are:
[0019] 1. The enclosure is made of Q235B carbon steel. After the enclosure is coated with epoxy anti-rust paint and dried and cured, fiberglass cloth is soaked in fiberglass special adhesive and then applied to form a protective shell, which effectively prevents corrosion, rust and water seepage.
[0020] II. The robustness of the multi-layered anti-corrosion structure is enhanced through robust processing techniques. For example, sanding the substrate before applying the first and second primers improves the bonding strength between the substrate and the primers. Applying putty to the first and second primers and sanding them smooth, then attaching impregnated fiberglass cloth to form the first and second backings, further strengthens the bond between the fiberglass cloth and the primer. After curing, the first and second backings are trimmed before applying fiberglass cloth to form the third and fourth backings. Finally, after curing, the first, second, third, and fourth topcoats are applied over the third and fourth backings. For example, applying the next topcoat when it is no longer sticky to the touch ensures strong adhesion between the topcoats.
[0021] Third, the use of first, second, third, fourth, fifth, sixth, seventh, and eighth glass cloths creates multiple spliced sections on both sides of the oil tank. The seams between the sections are not aligned, and the glass cloths are bonded and fixed with adhesive, effectively resisting corrosion and water immersion. Attached Figure Description
[0022] For ease of explanation, the present invention will be described in detail below with reference to specific embodiments and accompanying drawings.
[0023] Figure 1 This is a schematic diagram of the material structure of a corrosion-resistant substation accident oil tank according to the present invention.
[0024] Figure 2 for Figure 1 A schematic diagram of the structure of the oil tank after the lining was applied in the accident.
[0025] Figure 3 for Figure 2 A schematic diagram of the structure of the oil tank in the accident from below;
[0026] Figure 4 for Figure 2 Schematic diagram of the structure of the intermediate oil tank;
[0027] Figure 5 for Figure 4 A schematic diagram of the structure of the oil bath after the first glass cloth 31 has been attached;
[0028] Figure 6 for Figure 5 A schematic diagram of the structure of the oil bath after the second glass cloth 32 has been attached;
[0029] Figure 7 for Figure 6 A schematic diagram of the structure of the oil tank after the third glass cloth 33 has been attached;
[0030] Figure 8 for Figure 7 A schematic diagram of the structure of the oil bath after the fourth glass cloth 34 has been attached;
[0031] Figure 9 for Figure 8 A schematic diagram of the structure of the oil tank after the fifth glass cloth 35 was attached;
[0032] Figure 10 for Figure 9 A schematic diagram of the structure of the oil tank after the sixth glass cloth 36 was attached;
[0033] Figure 11 for Figure 10 A schematic diagram of the structure of the oil tank after the seventh glass cloth 37 has been attached;
[0034] Figure 12 for Figure 11 A schematic diagram of the structure of the oil tank after the eighth glass cloth 38 was attached;
[0035] In the figure, the substrate layer is 10, the first primer is 11, the first putty adhesive layer is 12, the first backing is 13, the first adhesive layer is 14, the third backing is 15, the first topcoat is 16, the third topcoat is 17, the second primer is 21, the second putty adhesive layer is 22, the second backing is 23, the second adhesive layer is 24, the fourth backing is 25, the second topcoat is 26, the fourth topcoat is 27, the first glass cloth is 31, the second glass cloth is 32, the third glass cloth is 33, the fourth glass cloth is 34, the fifth glass cloth is 35, the sixth glass cloth is 36, the seventh glass cloth is 37, and the eighth glass cloth is 38. Detailed Implementation
[0036] like Figures 1-12 As shown, this utility model will be described in detail. For ease of description, the directions mentioned below are defined as follows: the directions of up, down, left, right, front, and back mentioned below are the same as... Figure 1 The projection relationship is consistent in the up, down, left, right, front, and back directions. This utility model provides a corrosion-resistant substation accident oil tank, which includes an oil tank formed by splicing and welding a base material layer 10. The oil tank has a box structure. One side of the base material layer 10 is provided with a first primer 11, a first putty adhesive layer 12, a first lining 13, a first adhesive layer 14, a third lining 15, a first topcoat 16, and a third topcoat 17. The other side of the base material layer 10 is provided with a second primer 21, a second putty adhesive layer 22, a second lining 23, a second adhesive layer 24, a fourth lining 25, a second topcoat 26, and a fourth topcoat 27.
[0037] Advantageously, the first primer 11, the first putty adhesive layer 12, the first backing 13, the first adhesive layer 14, the third backing 15, the first topcoat 16, and the third topcoat 17 are distributed layer by layer toward one side of the substrate layer 10, and the second primer 21, the second putty adhesive layer 22, the second backing 23, the second adhesive layer 24, the fourth backing 25, the second topcoat 26, and the fourth topcoat 27 are distributed layer by layer toward the other side of the substrate layer 10, so that the substrate layer 10, the first primer 11, the first putty adhesive layer 12, the first backing 13, the first adhesive layer 14, the third backing 15, the first topcoat 16, the third topcoat 17, the second primer 21, the second putty adhesive layer 22, the second backing 23, the second adhesive layer 24, the fourth backing 25, the second topcoat 26, and the fourth topcoat 27 form a multi-layer structure.
[0038] Advantageously, the substrate layer 10 is made of iron, and the substrate layer 10 can be made of Q235B carbon steel.
[0039] Advantageously, the first primer 11 and the second primer 21 can be epoxy resin primers.
[0040] Advantageously, the first putty layer 12 and the second putty layer 22 can be made of epoxy resin and quartz powder putty.
[0041] Advantageously, the first backing 13 and the second backing 23 can be made of glass cloth.
[0042] Advantageously, the first adhesive layer 14 and the second adhesive layer 24 can be made of epoxy resin paint.
[0043] Advantageously, the third backing 15 and the fourth backing 25 can be made of glass cloth.
[0044] Advantageously, the thickness of the first primer 11 and the second primer 21 is greater than or equal to 0.1 mm.
[0045] Advantageously, the thickness of the first putty adhesive layer 12 and the second putty adhesive layer 22 is greater than or equal to 0.1 mm.
[0046] Advantageously, the thickness of the first topcoat 16, the second topcoat 26, the third topcoat 17 and the fourth topcoat 27 is greater than or equal to 0.1 mm, and epoxy resin paint can be used.
[0047] Advantageously, the first liner 13 includes a plurality of first glass cloths 31 and second glass cloths 32. An even number of first glass cloths 31 are arranged side by side and fixedly attached to the inner bottom of the oil bath. The second glass cloths 32 are arranged on the four sides of the inner end wall of the oil bath, and an odd number of second glass cloths 32 are arranged on each side. When attaching the second glass cloths 32 on one side, the second glass cloths 32 are placed on the upper end face of the first glass cloths 31 and bonded with adhesive. Then, the second glass cloths 32 are arranged and bonded to the inner end wall of the oil bath. The width formed by the plurality of second glass cloths 32 abuts against and is bonded to one side of the end wall of the oil bath. A gap is provided on the other side for attaching another width of second glass cloth 32. In this way, the width of the second glass cloths 32 is fixedly bonded to the inner end wall of the oil bath and the upper end face of the first glass cloths 31.
[0048] Advantageously, the third lining 15 includes a plurality of third glass cloths 33 and fourth glass cloths 34. An odd number of third glass cloths 33 are provided, and the third glass cloths 33 are attached and fixed to the upper end face of the first glass cloth 31. The third glass cloths 33 are abutted and fixed to the end face of the second glass cloth 32. The seams of the third glass cloths 33 are not aligned with the seams of the first glass cloth 31 and the seams of the second glass cloth 32. The fourth glass cloths 34 are attached and fixed to one side of the second glass cloth 32. The fourth glass cloths 34 are fixed to the upper end face of the third glass cloths 33. An even number of fourth glass cloths 34 are provided on one side of the oil tank end wall, and the seams of the fourth glass cloths 34 are not aligned with the seams of the second glass cloth 32.
[0049] Advantageously, the second lining 23 includes a plurality of fifth glass cloths 35 and sixth glass cloths 36. An even number of fifth glass cloths 35 are provided and are attached and fixed to the bottom of the outer end face of the oil bath. The sixth glass cloths 36 are attached and fixed to the four sides of the oil bath. The sixth glass cloths 36 are attached and fixed to the upper end face of the fifth glass cloths 35. When the sixth glass cloths 36 are attached, one side of the width formed by the sixth glass cloths 36 is flush with the outer end face of the oil bath, and the other side of the width formed by the sixth glass cloths 36 protrudes from the end face of the oil bath, so as to facilitate the splicing and fixing of the sixth glass cloths 36 with other widths of the sixth glass cloths 36.
[0050] Advantageously, the fourth liner 25 includes a plurality of seventh glass cloths 37 and eighth glass cloths 38. The seventh glass cloths 37 are attached and fixed to the lower end face of the fifth glass cloth 35. A plurality of eighth glass cloths 38 are fixedly disposed on the top of the seventh glass cloths 37. The eighth glass cloths 38 are attached and fixed to the outer surface of the sixth glass cloth 36. The seams of the seventh glass cloths 37 are not aligned with the seams of the fifth glass cloth 35, and the seams of the eighth glass cloths 38 are not aligned with the seams of the sixth glass cloth 36.
[0051] The Q235B carbon steel enclosure is manufactured with strict control over the welding process to minimize incomplete or missed welds, thereby ensuring the enclosure's sturdiness and water resistance, and preventing safety accidents such as enclosure tearing during transportation and hoisting.
[0052] The above composite layer is manufactured using the following processing techniques and methods to ensure the strong bond between each layer:
[0053] The first step is to thoroughly clean the anti-corrosion pool wall to remove all pollution and debris. Then, the base material layer 10 is prepared. The base material layer 10 needs to be finished by polishing its outer surface.
[0054] The second step is to apply a primer. Paint is applied to both sides of the substrate layer 10 to form a first primer 11 and a second primer 21. The primer must have strong adhesion to the substrate. Each layer of epoxy resin paint is approximately 0.1 mm thick.
[0055] The third step is to apply putty. Epoxy resin and quartz powder are used to smooth the outer surface of the first primer 11 and the second primer 21 with putty. If there are uneven or bumpy parts on the surface of the substrate layer 10, putty can be used to smooth them or make them into an arc transition. After curing, sandpaper is used to smooth them. The resin used in the putty is the same as the adhesive, forming the first putty adhesive layer 12 and the second putty adhesive layer 22.
[0056] The fourth step is to apply the first layer of glass cloth. Prepare the adhesive solution in advance and apply it to both the first putty adhesive layer 12 and the second putty adhesive layer 22 in both longitudinal and transverse directions. As the adhesive penetrates, it seeps out from the pores of the glass cloth. Then, apply the glass cloth backing onto the first putty adhesive layer 12 and the second putty adhesive layer 22. Next, use a brush, scraper, or roller to evenly flatten and compact the glass cloth, squeezing out any air bubbles. The glass cloth backing must be applied firmly, without air bubbles or wrinkles. When overlapping adjacent glass cloth layers, the seams should be staggered and not overlapped. Through the above process, the first putty adhesive layer 12 and the second putty adhesive layer 22 form the first backing 13 and the second backing 23 on one side.
[0057] The adhesive should be applied evenly, carefully, and quickly, with one coat each in both directions to prevent missed areas. The order of applying the fiberglass cloth can be reversed compared to the fluid flow direction, from top to bottom, wall first then bottom, pipe first then wall. Sometimes, for ease of operation, a piece of fiberglass cloth should be applied to the inlet and outlet simultaneously with the wall lining. After all construction is completed, the fiberglass cloth at this point will have cured, avoiding difficulties in entry and exit. When applying the fiberglass cloth, do not pull it too tight; just make sure it is basically straight, and there should be no skewing on either side. After the cloth is flat, immediately use a brush, scraper (rubber or plywood scraper), or roller to evenly smooth and compact it, removing air bubbles from the center outwards. The fiberglass cloth must be applied firmly, without air bubbles or wrinkles. The fiberglass cloth must be thoroughly soaked in the adhesive, allowing it to seep out from the pores. The overlap between the top, bottom, left, and right sides of the cloth should generally be no less than 50mm, and the overlaps of each layer should be staggered and not overlapped. The glass cloth should be cut open at the rounded corners and at the rounded edges, and then pasted onto the edges.
[0058] Step 5: Apply the second layer of glass cloth. After the first backing 13 and the second backing 23 have cured, apply adhesive to form the first adhesive layer 14 and the second adhesive layer 24. After the first adhesive layer 14 and the second adhesive layer 24 have initially cured and are no longer sticky, and after the first adhesive layer 14 and the second adhesive layer 24 have been smoothed and compacted or after a process of removing burrs, protruding edges, and air holes, apply the second layer of glass cloth. Then, following the process in step 4, form the third backing 15 and the fourth backing 25 on one side of the first adhesive layer 14 and the second adhesive layer 24. In the finishing process, roughen the surface with iron sandpaper, then wipe it clean with ethanol, dry it, and then apply the second layer of glass cloth.
[0059] After the first layer of fiberglass cloth is properly applied, apply a thin, even layer of adhesive. Apply the second layer in the same manner as the first, but each layer of fiberglass cloth should be applied only after the adhesive on the surface of the previous layer has partially cured and is no longer sticky. After any burrs, protruding edges, and air holes have been repaired and inspected to ensure they are in good condition, construction can proceed.
[0060] Step 6: After the third backing 15 and the fourth backing 25 have cured for 12 hours, they are trimmed and then topcoat is applied to form the first topcoat 16, the second topcoat 26, the third topcoat 17 and the fourth topcoat 27.
[0061] Step 7: When the first coat of paint 16 and the second coat of paint 26 from step 6 are no longer sticky to the touch, apply another coat of paint to form the third coat of paint 17 and the fourth coat of paint 27.
[0062] Step 8, Quality Inspection: Strict quality inspections must be conducted during the fiberglass lining construction to ensure quality. Any defects discovered should be repaired immediately, and construction can only continue after the lining has passed inspection. After completion, a comprehensive inspection should be carried out to ensure the lining meets service life requirements.
[0063] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.
Claims
1. A corrosion resistant transformer vault spill pot comprising a pot formed by butt welding of a base sheet (10), characterised in that, The substrate layer (10) has a first primer (11), a first putty adhesive layer (12), a first backing (13), a first adhesive layer (14), a third backing (15), a first topcoat (16), and a third topcoat (17) on one side. The substrate layer (10) has a second primer (21), a second putty adhesive layer (22), a second backing (23), a second adhesive layer (24), a fourth backing (25), a second topcoat (26), and a fourth topcoat (27) on the other side. The first backing (13) includes multiple first glass cloths (31) and second glass cloths (32). The third backing (15) includes multiple third glass cloths. The third glass cloth (33) and the fourth glass cloth (34), the second backing (23) includes a plurality of fifth glass cloths (35) and sixth glass cloths (36), the fourth backing (25) includes a plurality of seventh glass cloths (37) and eighth glass cloths (38), the seam of the third glass cloth (33) is not aligned with the seam of the first glass cloth (31), the seam of the third glass cloth (33) is not aligned with the seam of the second glass cloth (32), the seam of the seventh glass cloth (37) is not aligned with the seam of the fifth glass cloth (35), and the seam of the eighth glass cloth (38) is not aligned with the seam of the sixth glass cloth (36).
2. A corrosion resistant transformer vault spill pot according to claim 1, wherein: The substrate layer (10) is made of iron.
3. A corrosion resistant transformer vault spill pot according to claim 2, wherein: The substrate layer (10) is made of Q235B carbon steel.
4. The corrosion resistant transformer vault spill pot of claim 1, wherein: The first primer (11) and the second primer (21) are epoxy resin primers.
5. A corrosion resistant transformer vault spill pot according to claim 1, wherein: The first putty adhesive layer (12) and the second putty adhesive layer (22) are made of epoxy resin and quartz powder putty.
6. An anti-corrosion transformer accident oil sump as claimed in claim 1, wherein: The first backing (13), the second backing (23), the third backing (15) and the fourth backing (25) are made of glass cloth.
7. A corrosion resistant transformer vault spill pot according to claim 1, wherein: The first glass cloth (31) is attached and fixedly installed side by side on the inner bottom of the oil tank, and the second glass cloth (32) is installed on the four sides of the inner end wall of the oil tank. The width of the second glass cloth (32) is fixedly bonded to the inner end wall of the oil tank and the upper end surface of the first glass cloth (31).
8. A corrosion resistant transformer vault spill pot according to claim 7, characterized in that: The third glass cloth (33) is attached and fixed to the upper end face of the first glass cloth (31). The third glass cloth (33) is abutted and fixed to the end face of the second glass cloth (32). The fourth glass cloth (34) is attached and fixed to one side of the second glass cloth (32). The fourth glass cloth (34) is fixed to the upper end face of the third glass cloth (33). The seam of the fourth glass cloth (34) is not aligned with the seam of the second glass cloth (32).
9. A corrosion-resistant substation accident oil tank according to any one of claims 1-8, characterized in that: The fifth glass cloth (35) is fixed to the bottom of the outer end face of the oil tank, the sixth glass cloth (36) is fixed to the four sides of the oil tank, and the sixth glass cloth (36) is attached to and fixed to the upper end face of the fifth glass cloth (35).
10. A corrosion resistant transformer vault spill pot according to claim 9, wherein: The seventh glass cloth (37) is attached and fixed to the lower end face of the fifth glass cloth (35), and a plurality of eighth glass cloths (38) are fixedly provided on the top of the seventh glass cloth (37), and the eighth glass cloths (38) are attached and fixed to the outer surface of the sixth glass cloth (36).