Maintenance plugging tool for biodiesel storage tank manhole
By designing a maintenance and sealing tool for manholes of biodiesel storage tanks, the problem of high-cost and long-term cleaning and detection of manholes of storage tanks is solved, and safety, efficiency and cost improvements are achieved.
Patent Information
- Application Number
- CN202420074319.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-12
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-01-12
AI Technical Summary
When leakage occurs when a biodiesel storage tank manhole is close to the flange side, the prior art requires the material in the storage tank to be rewind, cleaned and detected, resulting in high costs, long time and wastewater generation, which increases the cost of sewage treatment.
Design a maintenance and sealing tool for biodiesel storage tank manholes, including sealing plates, positioning blocks, positioning bolts, pressing plates, sealing rings and expansion bolts. By putting the sealing plates into the tank manholes and with the tank manholes The inner wall is tightly connected to form an isolation space to prevent combustible gas from spilling out.
It is possible to isolate the combustible gas in the storage tank during maintenance operations, avoid the occurrence of safety accidents, reduce maintenance costs, save cleaning costs and sewage treatment costs, and improve maintenance efficiency.
Smart Images
Figure CN222523348U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a tool for blocking a manhole of a biodiesel tank when the manhole is repaired, and belongs to the technical field of diesel tank repair tools. Background Art
[0002] When leakage occurs near the flange side of the manhole of the biodiesel tank, the leaking position needs to be repaired by welding. According to fire safety regulations, when repairing various tanks storing oil and flammable materials, especially when performing welding operations, the materials in the tank must be poured into other tanks, the tank being repaired must be cleaned, and the flammable gas in the tank must be tested. Repair work can only be carried out after passing the test. Biodiesel tanks are also flammable material storage tanks. When leakage occurs near the flange side of the tank manhole of the biodiesel tank, it must be cleaned before repair operations can be carried out to avoid the risk of explosion of residual flammable gas in the tank. At present, tank cleaning is expensive and time-consuming, and the wastewater generated by cleaning the tank needs to be sent to a sewage treatment plant for centralized treatment.
[0003] In actual maintenance practice, through the structural study of the manhole of the biodiesel storage tank, it was found that when the manhole of the biodiesel storage tank leaks near the flange side, the leakage point is far away from the tank wall of the tank. If the leakage point can be isolated from the tank body, so that the flammable gas in the tank body cannot overflow through the manhole during maintenance work, the leakage point can be repaired. This not only ensures the safety of the maintenance work, but also greatly improves the efficiency of the maintenance work and reduces the maintenance cost. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a maintenance and plugging tool for the manhole of a biodiesel storage tank. When leakage occurs in the manhole of the tank near the flange side, the plugging tool can isolate the tank and the manhole of the tank into two independent spaces, and the flammable gas cannot overflow from the manhole of the tank. The leakage point on the flange side of the manhole of the tank is located in the atmosphere outside the tank, thereby avoiding safety accidents, improving the efficiency of maintenance work, saving tank washing expenses, and reducing maintenance costs.
[0005] The technical solution to solve the above technical problems is:
[0006] A maintenance and plugging tool for a manhole of a biodiesel storage tank, comprising a sealing plate, a positioning block, a positioning bolt, a pressure plate, a sealing ring, and a tightening bolt. The sealing plate is a circular metal plate, the diameter of the sealing plate matches the inner diameter of the manhole of the storage tank, four positioning blocks are evenly welded on the circumferential edge of the outer wall of the sealing plate, the positioning blocks are provided with positioning screw holes along the diameter direction of the sealing plate, the positioning bolts are connected with the positioning screw holes, the pressure plate and the sealing ring are respectively a metal plate ring and a high temperature resistant silicone foam plate ring, the pressure plate and the sealing ring are respectively The outer diameter of the ring matches the inner diameter of the manhole of the tank, the pressure plate is placed on the other side of the plate surface of the sealing plate, the sealing ring is placed between the plate surface of the sealing plate and the plate surface of the pressure plate, and a plurality of sealing through holes are evenly distributed on the circumferential edge of the closing plate. The plate surfaces of the pressure plate and the sealing ring are respectively provided with a plurality of expansion screw holes and expansion through holes, the expansion screw holes of the pressure plate and the expansion through holes of the sealing ring respectively correspond to the sealing through holes on the circumference of the sealing plate, and the expansion bolts pass through the sealing through holes and the expansion through holes to be connected with the expansion screw holes.
[0007] The above-mentioned biodiesel tank manhole maintenance and sealing tool, the positioning block is a metal cuboid, the positioning screw hole is located at the center of the positioning block, the front end of the rod body of the positioning bolt faces the outer periphery of the sealing plate, and the front end of the rod body of the positioning bolt is located at the outer edge of the sealing plate that extends out and is tightly connected to the inner wall of the tank manhole.
[0008] The above-mentioned maintenance and sealing tool for the manhole of the biodiesel storage tank comprises 14 to 18 sealing holes on the circumference of the sealing plate, expansion screw holes on the circumference of the pressure plate and expansion holes on the circumference of the sealing ring respectively. After the expansion bolts pass through the sealing holes and the expansion holes and are locked with the expansion screw holes, the outer circumferential surface of the sealing ring and the inner wall of the manhole of the tank are tightly matched for sealing.
[0009] The beneficial effects of the utility model are:
[0010] After the sealing plate of the utility model is put into the manhole of the storage tank, the positioning bolts are tightly connected with the inner wall of the manhole of the storage tank, so that the sealing plate is fixedly positioned inside the manhole of the storage tank; the sealing ring is a high-temperature resistant silicone foam plate, and the sealing ring is installed between the pressure plate and the sealing plate, and after the expansion bolts pass through the blocking through holes and the expansion through holes and the expansion screw holes and are locked, the sealing plate and the pressure plate squeeze the sealing ring, and the silicone body of the sealing ring is deformed to fill the gaps between the expansion bolts and the sealing plate, and between the sealing plate and the manhole of the storage tank, thereby achieving a sealing effect.
[0011] The utility model has a novel design, a simple structure and is easy to operate. When leakage occurs at the manhole of the biodiesel storage tank near the manhole flange side, it is only necessary to lower the tank liquid level to below the lowest point of the tank manhole, open the tank manhole and install the plugging tool near the tank end. There is no need to clean the tank, which saves cleaning costs, does not generate waste water, saves sewage treatment costs, shortens maintenance time and improves maintenance work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1It is a structural schematic diagram of the utility model;
[0013] Figure 2 It is an installation schematic diagram of the utility model.
[0014] The markings in the figure are as follows: sealing plate 1, positioning block 2, positioning bolt 3, tightening bolt 4, sealing ring 5, pressure plate 6, manhole flange 7, storage tank 8, storage tank manhole 9. DETAILED DESCRIPTION
[0015] The utility model is composed of a sealing plate 1, a positioning block 2, a positioning bolt 3, a tightening bolt 4, a sealing ring 5 and a pressing plate 6.
[0016] As shown in the figure, the sealing plate 1 is a circular metal plate. The diameter of the sealing plate 1 matches the inner diameter of the tank manhole 9 of the storage tank 8, and the diameter is 3-5mm smaller than the inner size of the manhole. The sealing plate 1 is placed in the tank manhole 9 of the storage tank 8 to isolate the bottom of the tank manhole 9 from the tank body of the storage tank 8, so that the combustible gas in the tank body cannot overflow from the tank body to the tank manhole 9 through the sealing plate 1 during maintenance work, and cannot approach the leakage point of the manhole flange 7, thereby avoiding the combustion accident of the combustible gas.
[0017] The figure shows that after the sealing plate 1 is placed in the tank manhole 9, the positioning bolts 3 can be used to tighten it against the inner wall of the tank manhole 9. In order to fix the sealing plate 1 to the inner wall of the bottom of the tank manhole 9 of the storage tank 8, four positioning blocks 2 are evenly welded on the circumferential edge of the outer wall of the sealing plate 1. The positioning block 2 is a metal cuboid, and there is a positioning screw hole at the center of the positioning block 2, and the positioning screw hole is along the diameter direction of the sealing plate 1. The positioning bolt 3 is connected to the positioning screw hole, and the front end of the rod body of the positioning bolt 3 faces the outer periphery of the sealing plate 1. The front end of the rod body of the positioning bolt 3 is located at the outer edge of the sealing plate 1 and is tightly connected to the inner wall of the tank manhole 9.
[0018] The figure shows that the pressing plate 6 is on the other side of the plate surface of the sealing plate 1. The pressing plate 6 is a circular metal plate. The outer diameter of the ring of the pressing plate 6 matches the inner diameter of the tank manhole 9, and the diameter is 3-5mm smaller than the inner hole size of the tank manhole 9. There are 16 blocking through holes evenly distributed on the circumferential edge of the sealing plate 1, and there are 16 expansion screw holes on the corresponding plate surface of the pressing plate 6. The 16 expansion bolts 4 pass through the blocking through holes to connect the sealing plate 1 and the pressing plate 6.
[0019] The figure shows that a sealing ring 5 is installed between the plate surface of the sealing plate 1 and the plate surface of the pressing plate 6. The sealing ring 5 is a high temperature resistant silicone foam plate ring, the outer diameter of the sealing ring 5 matches the inner diameter of the tank manhole 9, and the diameter is 3-5mm smaller than the inner hole size of the tank manhole 9. There are 16 expansion holes on the circumference of the plate surface of the sealing ring 5, and the expansion holes of the sealing ring 5 correspond to the expansion screw holes of the pressing plate 6 and the blocking holes on the circumference of the sealing plate 1, and the 16 expansion bolts 4 also pass through the expansion holes of the sealing ring 5 and are connected to the expansion screw holes of the pressing plate 6.
[0020] The sealing ring 5 has good high temperature resistance. It is installed between the pressure plate 6 and the sealing plate 1. The gap between the pressure plate 6 and the sealing plate 1 can be narrowed by tightening the expansion bolts 4. At the same time, the sealing ring 5 is squeezed to deform, filling the gap between the expansion bolts 4 and the sealing plate 1, and between the sealing plate 1 and the manhole 9 of the tank, thereby playing a sealing role.
[0021] The use process of the utility model is as follows:
[0022] When leakage occurs on the side of the tank manhole 9 close to the manhole flange 7 of the biodiesel storage tank 8, the leakage point is far away from the tank wall of the storage tank 8, and the utility model can be used to isolate the storage tank 8 and the storage tank manhole 9 into two independent spaces, and the combustible gas cannot overflow from the storage tank manhole 9. The leakage point on the flange side of the storage tank manhole 9 is located in the atmosphere outside the storage tank 8, and the leakage point can be repaired. This not only ensures the safety of the maintenance work, but also greatly improves the efficiency of the maintenance work and reduces the maintenance cost.
[0023] First, assemble the utility model by installing the positioning bolt 3 in the positioning screw hole of the positioning block 2, with the front end of the rod of the positioning bolt 3 facing the outer periphery of the sealing plate 1, and then installing the sealing ring 5 between the pressure plate 6 and the sealing plate 1, and connecting the sealing plate 1, the sealing ring 5, and the pressure plate 6 together through 16 tension bolts 4.
[0024] After the assembly is completed, the sealing plate 1 is placed into the tank manhole 9 of the storage tank 8 to be sealed, the positioning bolts 3 are adjusted, the gap between the sealing plate 1 and the tank manhole 9 is adjusted, and the positioning bolts 3 are tightened after even adjustment to fix the sealing plate 1 to the inner wall of the tank manhole 9 of the storage tank 8.
[0025] Tighten 16 expansion bolts 4 diagonally in sequence, so that the pressure plate 6 and the sealing plate 1 squeeze the sealing ring 5, and the outer circumference of the sealing ring 5 expands outward to fill the gaps between the expansion bolts 4 and the sealing plate 1, and between the sealing plate 1 and the tank manhole 9, so that the sealing plate 1 seals the inner wall of the tank manhole 9;
[0026] Use a combustible gas detector to detect the concentration of the combustible mixed gas in the tank manhole 9 outside the sealing plate 1, and perform repair work after the test is qualified.
[0027] An embodiment of the present utility model is as follows:
[0028] The sealing plate 1 is formed by processing 8mm aluminum plate, with a diameter of 495mm;
[0029] The positioning block 2 is square, made of 14mm aluminum plate, with a length of 50mm and a width of 50mm;
[0030] The diameter of the positioning bolt 3 is 14 mm and the length is 100 mm;
[0031] The diameter of the expansion bolt 4 is 12 mm and the length is 40 mm;
[0032] The sealing ring 5 is in the shape of a ring and is formed by high temperature resistant silicone foam board, with an outer diameter of 495 mm, an inner diameter of 380 mm and a thickness of 14 mm;
[0033] The pressing plate 6 is in the shape of a circular ring, and is formed by processing a 12 mm aluminum plate, with an outer diameter of 495 mm, an inner diameter of 380 mm, and a thickness of 14 mm.
Claims
1. A repair and plugging tool for a biodiesel tank manhole, characterized in that: It comprises a sealing plate (1), a positioning block (2), a positioning bolt (3), a pressure plate (6), a sealing ring (5), and a tension bolt (4). The sealing plate (1) is a circular metal plate. The diameter of the sealing plate (1) matches the inner diameter of the manhole (9) of the storage tank. Four positioning blocks (2) are evenly welded on the circumferential edge of the outer wall of the sealing plate (1). The positioning blocks (2) are provided with positioning screw holes along the diameter direction of the sealing plate (1). The positioning bolts (3) are connected with the positioning screw holes. The pressure plate (6) and the sealing ring (5) are respectively a metal plate ring and a high-temperature resistant silicone foam plate ring. The pressure plate (6) and the sealing ring (5) The outer diameters of the circular rings are matched with the inner diameters of the manhole (9) of the storage tank, respectively. The pressure plate (6) is placed on the other side of the plate surface of the sealing plate (1), and the sealing ring (5) is placed between the plate surfaces of the sealing plate (1) and the pressure plate (6). The sealing plate (1) is evenly distributed with a plurality of sealing through holes on its circumferential edge. The pressure plate (6) and the sealing ring (5) are respectively provided with a plurality of expansion screw holes and expansion through holes on their circumferences. The expansion screw holes of the pressure plate (6) and the expansion through holes of the sealing ring (5) respectively correspond to the sealing through holes on the circumference of the sealing plate (1), and the expansion bolts (4) pass through the sealing through holes and the expansion through holes to be connected with the expansion screw holes.
2. The repair and plugging tool for the manhole of a biodiesel storage tank according to claim 1, characterized in that: The positioning block (2) is a metal rectangular parallelepiped, the positioning screw hole is located at the center of the positioning block (2), the front end of the rod body of the positioning bolt (3) faces the outer periphery of the sealing plate (1), and the front end of the rod body of the positioning bolt (3) is located at the outer edge of the sealing plate (1) and is tightly connected to the inner wall of the tank manhole (9).
3. The repair and plugging tool for the manhole of a biodiesel storage tank according to claim 1, characterized in that: The sealing through holes on the circumference of the sealing plate (1), the expansion screw holes on the circumference of the pressure plate (6) and the expansion through holes on the circumference of the sealing ring (5) are 14 to 18 in number respectively. After the expansion bolts (4) pass through the sealing through holes and the expansion through holes and are locked with the expansion screw holes, the outer circumferential surface of the sealing ring and the inner wall of the tank manhole (9) are tightly matched in a sealed manner.