Static electricity leading-out device of raw material storage tank
By designing a tensioning mechanism for rollers and counterweights, the problem of the conductive wires easily bending and tangling during the raising and lowering of the internal floating roof was solved, achieving high efficiency in static electricity discharge and a long lifespan for the conductive wires, thus improving the safety and reliability of the device.
Patent Information
- Application Number
- CN202520533631.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-25
AI Technical Summary
In traditional electrostatic discharge devices, the conductive wires are prone to bending and tangling when the inner floating roof rises and falls, leading to poor conductivity and safety hazards, affecting the efficiency of electrostatic discharge and shortening the service life of the device.
A tensioning mechanism including rollers and counterweights is designed to ensure that the conductive wire is always taut. Combined with different material coatings and sealing mechanisms, the conductive wire is prevented from bending and tangling. Static electricity is effectively discharged through conductive floats and ground pins.
It maintains the efficiency of static electricity discharge, extends the service life of the conductive wire, avoids wear and external corrosion of the conductive wire, and improves the safety and reliability of the device.
Smart Images
Figure CN223865535U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of electrostatic discharge devices, and more specifically, to an electrostatic discharge device for raw material storage tanks. Background Technology
[0002] Raw material storage tanks, as indispensable storage equipment in industrial production, are widely used in petrochemical, food, and pharmaceutical industries. These sealed containers, made of metal, plastic, or composite materials, can safely store liquid or gaseous materials such as crude oil, refined oil products, and chemical raw materials. Taking crude oil storage tanks as an example, they typically employ a vertical or spherical structure, with an internal floating roof design to effectively reduce oil and gas evaporation losses. However, during crude oil storage, static electricity is easily generated due to liquid flow and agitation; if not promptly dissipated, this can pose a fire or explosion risk.
[0003] Currently, most electrostatic discharge devices utilize conductive floats and conductive wires to conduct charge. However, in traditional designs, the conductive wires need to be of a certain length to accommodate the raising and lowering of the internal floating roof, leading to bending and tangling of the wires when the internal floating roof rises. This can not only cause poor conductive contact and increased resistance, affecting electrostatic discharge efficiency, but also shorten the device's lifespan due to mechanical wear. Therefore, we propose an electrostatic discharge device for raw material storage tanks. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a static electricity discharge device for raw material storage tanks to solve the technical problem that conductive wires are easily bent and tangled when rising and falling with the internal floating roof in the storage tank, which leads to poor conductivity and safety hazards.
[0005] To solve the above technical problems, this utility model provides the following technical solution: a static electricity discharge device for a raw material storage tank, including a tank body, an inner floating roof arranged in the middle of the tank body, a tensioning mechanism arranged at the upper end of the tank body, a conduction mechanism arranged in the middle of the tensioning mechanism, and a sealing mechanism installed through the lower end of the tensioning mechanism.
[0006] The tensioning mechanism includes a vertical cylinder that runs through the upper part of the tank body. A top plate is arranged on the upper part of one side of the vertical cylinder, and a roller is arranged on the top plate. A bottom plate is arranged on the lower part of the other side of the vertical cylinder, and a column is arranged on the bottom plate. A counterweight is arranged in the middle of the column, and the counterweight has a concave wheel structure.
[0007] Preferably, a sliding sleeve is installed through the side of the inner floating roof, a sliding rod is inserted into the sliding sleeve and fixed to the inside side of the tank, a support rod is fixed to the side of the lower surface of the inner floating roof, and clamps are fixed to both ends of the lower surface of the inner floating roof, with floats fixed inside the clamps.
[0008] Preferably, the transmission mechanism includes a guide rod and a conductive wire A. The upper end of the guide rod is connected to a conductive wire B. One end of the conductive wire B passes through the roller and the counterweight and is connected to the upper end of the inside of the vertical cylinder. The conductive wire A is arranged on the upper surface of the outside of the tank through a guide ring. One end of the conductive wire A is connected to one end of the conductive wire B, and the other end of the conductive wire A is connected to a ground pin.
[0009] Preferably, the lower end of the guide rod passes through the inner floating top and is connected to a conductive line C. One end of the conductive line C is connected to a conductive float, and the conductive float is placed between the clamps.
[0010] Preferably, the sealing mechanism includes a sleeve that is installed through the lower end of the vertical cylinder. The sleeve has a notch on its inner side, and a sealing gasket is arranged in the notch. The sealing gasket has a lip-shaped structure, and a guide rod is inserted into the sealing gasket.
[0011] Preferably, pulleys are rotatably mounted at both ends of the counterweight, the pulleys slide in the grooves, and the grooves are opened on both sides inside the column.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This invention, through the design of rollers and counterweights, ensures that the conductive wire B arranged inside the vertical cylinder remains taut at all times. When crude oil is added to or discharged from the tank, the guide rod loosens and pulls the conductive wire B, while the rollers guide the conductive wire B to move and fold back under the counterweight. The counterweight always slides inside the column and presses down the conductive wire B, preventing it from bending or tangling due to the rise and fall of the guide rod. This maintains the efficiency of static electricity discharge and extends the service life of the conductive wire B.
[0014] This invention, through the design of a sleeve and guide rod structure, allows the static electricity conducted by the conductive wire C to be transferred to the conductive wire B. Furthermore, the guide rod can move up and down within the sleeve during static electricity conduction. This, combined with the actions of the counterweight pressing down on the conductive wire B and the conductive wire B pulling up the counterweight, does not hinder static electricity conduction. The coordinated up-and-down movement of the guide rod within the sleeve also prevents crude oil sulfide gases from entering the vertical cylinder through this point, thus avoiding damage to the internal structure of the vertical cylinder. The lip-shaped sealing gasket, when the guide rod moves up and down inside, has its lip contacting the guide rod, providing a sealing effect. The friction is relatively low when the guide rod moves up and down within the sealing gasket. Additionally, the sealing gasket contains four sealing gaskets, with the two middle gaskets coated with lubricating oil. This not only seals the gap between the sealing gasket and the guide rod but also lubricates the guide rod as it moves within the sealing gasket, reducing friction.
[0015] This invention designs conductive wires A, B, and C, which are respectively arranged outside the tank, inside the vertical cylinder, and inside the tank. This allows the static electricity generated on the surface of the crude oil inside the tank to be conducted to the ground needle, achieving a static discharge effect. Conductive wire A is covered with polyvinyl chloride, which provides insulation and resistance to external corrosion such as rain and ultraviolet rays, extending its service life. Conductive wire B is covered with highly elastic silicone, which is flexible, resistant to bending fatigue, and suitable for prolonged tensioning operations. Conductive wire C is covered with nitrile rubber, which resists corrosion from sulfides in the crude oil. Attached Figure Description
[0016] Figure 1 This is a front view cutaway schematic diagram of the inner floating roof lifting structure of this utility model;
[0017] Figure 2 This is a front view cutaway schematic diagram of the inner floating roof lowering structure of this utility model;
[0018] Figure 3 This is a schematic diagram of the main appearance structure of this utility model;
[0019] Figure 4 This is a schematic diagram of the transmission mechanism structure of this utility model;
[0020] Figure 5 This is a cross-sectional structural diagram of the tensioning mechanism of this utility model;
[0021] Figure 6 This is a top view schematic diagram of the tensioning mechanism of this utility model;
[0022] Figure 7 This is a cross-sectional structural diagram of the sealing mechanism of this utility model.
[0023] Explanation of the labels in the diagram:
[0024] 1. Tank body; 2. Internal floating roof; 3. Tensioning mechanism; 301. Vertical cylinder; 302. Top plate; 303. Roller; 304. Bottom plate; 305. Column; 306. Counterweight; 307. Pulley; 308. Slide groove; 4. Transmission mechanism; 401. Guide rod; 402. Conductive wire A; 403. Conductive wire B; 404. Ground pin; 405. Conductive wire C; 406. Conductive float; 5. Sealing mechanism; 501. Sleeve; 502. Notch; 503. Sealing gasket; 6. Sliding sleeve; 7. Sliding rod; 8. Support rod; 9. Clamping plate; 10. Float; 11. Guide ring. Detailed Implementation
[0025] like Figures 1 to 7As shown, the static electricity discharge device for raw material storage tanks involved in this utility model includes a tank body 1, an inner floating roof 2 arranged in the middle inside the tank body 1, a tensioning mechanism 3 arranged at the upper end inside the tank body 1, a conduction mechanism 4 arranged in the middle inside the tensioning mechanism 3, and a sealing mechanism 5 installed through the lower end inside the tensioning mechanism 3.
[0026] The tensioning mechanism 3 includes a vertical cylinder 301 that runs through the upper part of the tank body 1. A top plate 302 is arranged on the upper part of one side of the vertical cylinder 301, and a roller 303 is arranged on the top plate 302. A bottom plate 304 is arranged on the lower part of the other side of the vertical cylinder 301, and a column 305 is arranged on the bottom plate 304. A counterweight 306 is arranged in the middle of the column 305. The counterweight 306 has a concave wheel structure. This invention, through the design of the roller 303 and the counterweight 306, ensures that the conductive wire B403 arranged in the vertical cylinder 301 remains taut at all times. When crude oil is added to or discharged from the tank 1, the guide rod 401 loosens and pulls the conductive wire B403. The roller 303 guides the conductive wire B403 to move and fold back under the counterweight 306. The counterweight 306 always slides within the column 305 and presses down the conductive wire B403, preventing the conductive wire B403 from bending and tangling due to the lifting and lowering of the guide rod 401. This maintains the efficiency of static electricity discharge and extends the service life of the conductive wire B403. The counterweight 306, with its concave wheel structure design, can gather the conductive wire B403 in the middle, making it less likely to fall off the surface of the conductive wire B403 when moving on it.
[0027] In this embodiment of the invention, a sliding sleeve 6 is installed through the side of the inner floating roof 2, and a sliding rod 7 is inserted into the sliding sleeve 6. The sliding rod 7 is fixed to the inner side of the tank body 1. A support rod 8 is fixed to the lower side of the inner floating roof 2, and clamping plates 9 are fixed to both ends of the lower surface of the inner floating roof 2. A float 10 is fixed inside the clamping plates 9. By designing the structure of the sliding sleeve 6 and the sliding rod 7, this invention allows the inner floating roof 2 to move stably up and down inside the tank body 1, preventing the inner floating roof 2 from tilting when the crude oil in the tank body 1 increases or decreases. The installation of the support rod 8 ensures that after the crude oil in the tank body 1 is drained, the inner floating roof 2 will not descend and stick to the bottom of the tank body 1, always maintaining a space for workers to enter the space through the hole on the side of the bottom of the tank body 1 to perform internal maintenance operations.
[0028] In an embodiment of this utility model, the conduction mechanism 4 includes a guide rod 401 and a conductive wire A402. The upper end of the guide rod 401 is connected to a conductive wire B403. One end of the conductive wire B403 passes through the roller 303 and the counterweight 306 and is connected to the upper end of the inside of the vertical cylinder 301. The conductive wire A402 is arranged on the upper surface of the outer side of the tank 1 through a guide ring 11. One end of the conductive wire A402 is connected to one end of the conductive wire B403, and the other end of the conductive wire A402 is connected to a ground pin 404. This invention, through the design of conductive wires A402, B403, and C405, which are respectively arranged on the outside of the tank 1, inside the vertical cylinder 301, and inside the tank 1, can conduct the static electricity generated on the surface of the crude oil in the tank 1 to the ground needle 404, achieving the effect of static electricity discharge. Furthermore, the outer layer of conductive wire A402 is covered with polyvinyl chloride material, which provides insulation and resistance to external corrosion such as rain and ultraviolet rays, extending the service life of conductive wire A402 located on the outside of the tank 1. The outer layer of conductive wire B403 is covered with highly elastic silicone material, which has high flexibility, resistance to bending fatigue, and is suitable for long-term tensioning operations. The outer layer of conductive wire C405 is covered with nitrile rubber material, which can resist the corrosion of sulfides in crude oil. The guide ring 11 is made of polytetrafluoroethylene material, which has excellent insulation properties, is resistant to high and low temperatures, and is not easily damaged even after long-term exposure to the outside and corrosive environment. The installation of the guide ring 11 allows conductive wire A402 to be arranged away from the outer top surface of the tank 1, preventing the static electricity conducted inside conductive wire A402 from being conducted back to the tank 1. The installation of the ground pin 404 allows the static electricity generated on the surface of crude oil to be conducted through the conductive float 406, conductive wire C405, guide rod 401, conductive wire B403 and conductive wire A402 to its interior and then guided to the ground.
[0029] In this embodiment of the invention, the lower end of the guide rod 401 passes through the inner floating top 2 and is connected to a conductive wire C405. One end of the conductive wire C405 is connected to a conductive float 406, and the conductive float 406 is placed between the clamping plates 9. By designing the structure of the conductive float 406, this invention allows the static electricity generated on the surface of the crude oil in the tank 1 to be conducted through this point to the conductive wire C405, achieving the effect of static electricity conduction on the liquid surface.
[0030] In an embodiment of this utility model, the sealing mechanism 5 includes a sleeve 501 that is installed through the lower end of the vertical cylinder 301. A notch 502 is provided on the inner side of the sleeve 501, and a sealing gasket 503 is arranged within the notch 502. The sealing gasket 503 has a lip-shaped structure, and a guide rod 401 is inserted into the sealing gasket 503. This utility model, through the design of the sleeve 501 and guide rod 401, allows the static electricity conducted by the conductive wire C405 to be transferred to the conductive wire B403. Furthermore, the guide rod 401 can move up and down within the sleeve 501 during static electricity conduction. This, combined with the actions of the counterweight 306 pressing down on the conductive wire B403 and the conductive wire B403 pulling up the counterweight 306, does not hinder static electricity conduction. The coordinated up and down movement of the guide rod 401 within the sleeve 501 also prevents crude oil sulfide gas in the tank 1 from entering the vertical cylinder 301 through this point, thus protecting the vertical cylinder. The internal structure of the cylinder 301 is damaged. The lip-shaped sealing gasket 503, when the guide rod 401 inside moves up and down, will have its lip contact with the guide rod 401, which will play a sealing role. The friction of the guide rod 401 when it moves up and down inside the sealing gasket 503 is relatively small. In addition, there are four sealing gaskets 503 inside the sealing gasket 503. The two middle sealing gaskets 503 are coated with lubricating oil, which can seal the gap between the sealing gasket 503 and the guide rod 401 and also lubricate the guide rod 401 to move inside the sealing gasket 503, reducing friction.
[0031] In this embodiment of the invention, pulleys 307 are rotatably mounted at both ends of the counterweight 306. The pulleys 307 slide within a groove 308, which is located on both sides inside the column 305. By designing the pulleys 307 and the grooves 308, this invention allows the counterweight 306 to move stably up and down within the column 305. This ensures stable movement of the counterweight 306 when it is pulled up by the conductive wire B403 and lowered.
[0032] Working Principle: This embodiment provides a static electricity discharge device for raw material storage tanks. When crude oil is injected into tank 1, the float 10 will float on its surface and bring the inner floating top 2 mounted on the surface up inside tank 1. After the inner floating top 2 rises, the guide rod 401 connected to its surface will rise inside the vertical cylinder 301. The rising guide rod 401 moves with the conductive wire B403 connected to its top end. At this time, the conductive wire B403 will be pressed down by the counterweight 306 to maintain the tension of the conductive wire B403. When the crude oil is stored in tank 1, the static electricity generated on its surface will be conducted by the conductive float 406, and then conducted to the guide rod 401 through the conductive wire C405. The static electricity will then be transferred to the guide rod 401 through the guide rod 401. The static electricity is conducted to conductive wire B403, then to conductive wire A402, and finally to ground needle 404. Ground needle 404 then guides the static electricity into the ground. When crude oil is discharged from tank 1, its float 10 will descend with the inner floating roof 2 inside tank 1. The descending inner floating roof 2 will pull the guide rod 401, which will then descend inside the vertical cylinder 301. After descending, the guide rod 401 will pull the conductive wire B403 connected at one end, thus lifting the counterweight 306. The counterweight 306 will then rise inside the column 305, continuing to tension the conductive wire B403.
[0033] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.
Claims
1. A static electricity discharge device for a raw material storage tank, comprising a tank body (1), characterized in that: The tank body (1) has an internal floating roof (2) arranged in the middle, a tensioning mechanism (3) arranged at the upper end of the tank body (1), a transmission mechanism (4) arranged in the middle of the tensioning mechanism (3), and a sealing mechanism (5) installed through the lower end of the tensioning mechanism (3). The tensioning mechanism (3) includes a vertical cylinder (301) that runs through the upper part of the tank body (1). A top plate (302) is arranged on the upper part of one side of the vertical cylinder (301), and a roller (303) is arranged on the top plate (302). A bottom plate (304) is arranged on the lower part of the other side of the vertical cylinder (301), and a column (305) is arranged on the bottom plate (304). A counterweight (306) is arranged in the middle of the column (305), and the counterweight (306) has a concave wheel structure.
2. The static electricity discharge device for raw material storage tanks according to claim 1, characterized in that: The inner floating roof (2) is fitted with a sliding sleeve (6) through the side. A sliding rod (7) is inserted into the sliding sleeve (6) and the sliding rod (7) is fixed inside the tank body (1). A support rod (8) is fixed to the side of the lower surface of the inner floating roof (2). Clamping plates (9) are fixed at both ends of the lower surface of the inner floating roof (2). A float (10) is fixed inside the clamping plate (9).
3. The static electricity discharge device for raw material storage tanks according to claim 2, characterized in that: The transmission mechanism (4) includes a guide rod (401) and a conductive wire A (402). The upper end of the guide rod (401) is connected to a conductive wire B (403). One end of the conductive wire B (403) passes through the roller (303) and the counterweight (306) and is connected to the upper end of the inside of the vertical cylinder (301). The conductive wire A (402) is arranged on the upper surface of the tank (1) through a guide ring (11). One end of the conductive wire A (402) is connected to one end of the conductive wire B (403), and the other end of the conductive wire A (402) is connected to a ground pin (404).
4. The static electricity discharge device for raw material storage tanks according to claim 3, characterized in that: The lower end of the guide rod (401) passes through the inner floating top (2) and is connected to a conductive line C (405). One end of the conductive line C (405) is connected to a conductive float (406), and the conductive float (406) is placed between the clamps (9).
5. The static electricity discharge device for raw material storage tanks according to claim 4, characterized in that: The sealing mechanism (5) includes a sleeve (501) that is installed through the lower end of the vertical cylinder (301). A notch (502) is provided on the inner side of the sleeve (501). A sealing gasket (503) is arranged in the notch (502). The sealing gasket (503) has a lip-shaped structure. A guide rod (401) is inserted into the sealing gasket (503).
6. The static electricity discharge device for raw material storage tanks according to claim 5, characterized in that: The counterweight (306) is rotatably mounted with pulleys (307) at both ends. The pulleys (307) slide in the groove (308), and the groove (308) is opened on both sides inside the column (305).