Explosion-proof electrostatic discharge device for top of oil storage tank

Abstract

The utility model provides an explosion-proof electrostatic discharge device for the top of an oil storage tank, the device comprises a sampling tool, a magnetic sucker, a magnetic base, an electrostatic discharge rod and an explosion-proof touch ball, one end of the sampling tool goes deep into the oil storage tank through a sampling port at the top of the oil storage tank, and the other end of the sampling tool is connected with the magnetic sucker; the magnetic base is fixedly installed on the side face of the electrostatic discharge rod, the magnetic suction cup and the magnetic base are connected in a magnetic suction mode, the anti-explosion touch ball is arranged at the top of the electrostatic discharge rod, and the electrostatic discharge rod is connected with the ground. According to the utility model, the sampling tool and the electrostatic discharge rod are in magnetic attraction connection through the magnetic assembly, so that the sampling tool can be in grounding connection through the electrostatic discharge rod, the problems of complex field grounding operation and unreliable temporary grounding are solved, and the reliability of grounding connection is improved through integration with human body electrostatic discharge; the device is simple in structure, easy and convenient to operate and convenient to use, and the possibility of electrostatic safety accidents is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of electrostatic safety technology and relates to an explosion-proof electrostatic discharge device for the top of an oil storage tank. Background Technology

[0002] Due to the fundamental role of the petroleum industry in modern society, petrochemical enterprises use a large number of storage tanks. During the production, storage and transportation of petroleum, fires and explosions caused by static electricity occur frequently. Therefore, static electricity generated during manual operation needs to be taken seriously. Otherwise, once static electricity discharges, it can easily cause serious consequences such as combustion and explosion in dangerous places such as flammable and explosive areas.

[0003] In the production and storage of flammable and explosive materials, static discharge piles are often installed at the entrance to release static electricity carried by personnel. Anti-static shoes are also used to conduct static electricity to the ground. However, in the operation of oil storage tanks, the movement of personnel inevitably generates static electricity. The static electricity can be conducted to the grounding electrode of the oil storage tank by touching the handrail. However, the above process is usually used for traditional workshop operations and does not involve the static electricity release when sampling oil storage tanks. This process involves oil sampling or measurement and is very prone to safety accidents caused by static electricity.

[0004] When a sampling port is installed on the top of an oil storage tank, explosion-proof electrostatic dischargers are usually installed on both sides of the sampling port. When sampling or measuring, the operator first eliminates static electricity through the explosion-proof electrostatic discharger, and then connects the sampling tool to the grounded metal part on the top of the tank. The latter requires squatting down to operate, and it needs to be operated before and after sampling, which is inconvenient. Sometimes the importance of this grounding operation is easily overlooked.

[0005] CN 206749714U discloses a multifunctional explosion-proof static electricity release pile, including a base fixedly installed on the ground, a frame box above the base, and a grounding pile below the base. The frame box has a static electricity grounding alarm at the bottom, a human body static electricity release contact in the middle, and an audible and visual alarm at the top. The bottom end of the grounding pile extends below the ground, and its upper end is connected to the human body static electricity release contact and the static electricity grounding alarm. The bottom of the audible and visual alarm has an explosion-proof junction box with an audible and visual alarm lead wire for connecting to the liquid level sensor of the oil storage tank. The bottom of the static electricity grounding alarm has a vehicle body static electricity wire connected to the tanker body, and the front end of the vehicle body static electricity wire has a connector clamp. This static electricity release pile integrates grounding alarm, liquid level alarm, and static electricity release, and is mainly suitable for the transportation process of oil tankers. However, its structure is relatively complex, and it does not address the explosion-proof and anti-static structural design for oil storage and retrieval.

[0006] CN 204699253U discloses an electrostatic discharge device installed on the exposed metal part of the handrail of an oil storage tank ladder. The device includes a metal component, bolts, and a grounding wire. The metal component has bolt holes through which the bolts secure the metal component to the handrail. One end of the grounding wire is connected to the bolts, and the other end is connected to the grounding electrode of the oil storage tank. This device, through the metal component and bolts, can effectively conduct static electricity carried by the wearer to the ground through the grounding electrode of the oil storage tank. However, it does not address the static electricity that may exist during oil tank sampling and the corresponding electrostatic discharge structure that needs to be designed.

[0007] In summary, for explosion-proof electrostatic discharge devices during oil tank sampling, the electrostatic discharge of both the human body and sampling tools should be carried out through an electrostatic discharger to increase the reliability of the grounding connection, simplify operation, and reduce the possibility of safety accidents. Utility Model Content

[0008] To address the problems existing in the prior art, the purpose of this utility model is to provide an explosion-proof electrostatic discharge device for the top of an oil storage tank. The device magnetically connects the sampling tool and the electrostatic discharge rod using a magnetic component, enabling the sampling tool to be grounded through the electrostatic discharge rod. This solves the problems of complex on-site grounding operations and unreliable temporary grounding. By integrating with human body electrostatic discharge, the reliability of the grounding connection is improved.

[0009] To achieve this objective, the present invention adopts the following technical solution:

[0010] This utility model provides an explosion-proof electrostatic discharge device for the top of an oil storage tank. The explosion-proof electrostatic discharge device includes a sampling tool, a magnetic chuck, a magnetic base, an electrostatic discharge rod, and an explosion-proof touch ball. One end of the sampling tool extends into the oil storage tank through a sampling port on the top of the tank, and the other end of the sampling tool is connected to the magnetic chuck. The magnetic base is fixedly installed on the side of the electrostatic discharge rod, and the magnetic chuck and the magnetic base are magnetically connected. The explosion-proof touch ball is located on the top of the electrostatic discharge rod, and the electrostatic discharge rod is grounded.

[0011] In this invention, for the problem of electrostatic discharge in operations related to oil storage tanks in the petrochemical industry, in addition to traditional human electrostatic discharge, electrostatic discharge is also required for related tools when sampling oil storage tanks. In this invention, the sampling tool is connected to a magnetic component, and a magnetic component is also set on the electrostatic discharge rod. Through the magnetic attraction connection between the magnetic components, the electrostatic discharge of the sampling tool can be combined with the human electrostatic discharge device, which can solve the problem of complex on-site grounding operation of the sampling tool and the problem of unreliable temporary grounding connection. The device has a simple structure, is easy to operate and use, has high grounding connection reliability, and reduces the possibility of electrostatic safety accidents.

[0012] The following are preferred technical solutions of this utility model, but are not intended to limit the technical solutions provided by this utility model. Through the following technical solutions, the technical objectives and beneficial effects of this utility model can be better achieved and realized.

[0013] As a preferred technical solution of this utility model, the sampling tool includes a sampling rope and a metal sampler. The sampling rope is a conductive rope, and its types include cotton rope with built-in copper wire or metal fiber rope. The metal fiber rope is woven from multiple strands of metal fibers.

[0014] As a preferred technical solution of this utility model, when the sampling rope is used, one end is connected to a metal sampler, which penetrates into the oil storage tank through the sampling port, and the other end of the sampling rope is a connector lug, which is fixedly connected to a magnetic chuck.

[0015] In this invention, the oil tank sampling is generally carried out using a simple manual lifting method, which is a combination of a sampling rope and a metal sampler. The sampling rope can be selected from different materials and sizes, and the metal sampler can be selected from different materials and shapes. The sampling port is equipped with a cover plate. When sampling, the cover plate is opened, and the sampler is inserted into the oil tank through the sampling rope to obtain the sample. After the sampler is pulled out, the cover plate is closed, and the sampling rope and sampler are taken away by the staff.

[0016] As a preferred technical solution of this utility model, a first bolt is provided on one side of the magnetic chuck, the first bolt has external threads, the connection lug of the sampling rope is sleeved on the first bolt, and then the first nut is threadedly connected to the first bolt.

[0017] In this utility model, the connection between the sampling rope and the magnetic chuck is achieved by using bolts and nuts on the magnetic chuck to fix the lug at the end of the sampling rope. Since it is not easy to directly set bolts on the magnetic chuck itself, a sheath can be used to wrap the magnetic chuck, and bolts can be set on the sheath. Both the sheath and the bolts can be made of stainless steel, while the lug is made of the same material as the wire of the sampling rope, and copper lugs can be selected.

[0018] As a preferred technical solution of this utility model, the height of the electrostatic release rod is 0.9 to 1.1m, such as 0.9m, 0.95m, 1.0m, 1.05m or 1.1m, but not limited to the listed values; other unlisted values ​​within this range are also applicable. A fixed bracket is welded to the side of the electrostatic release rod, and the distance from the center of the fixed bracket to the bottom of the electrostatic release rod is 0.75 to 0.9m, such as 0.75m, 0.78m, 0.8m, 0.82m, 0.85m, 0.88m or 0.9m, but not limited to the listed values; other unlisted values ​​within this range are also applicable.

[0019] The fixed bracket is provided with a through hole, and the magnetic chassis is fixedly installed on the fixed bracket.

[0020] As a preferred technical solution of this utility model, a second bolt is provided on one side of the magnetic base. The second bolt has external threads. The second bolt passes through the through hole on the fixing bracket and is then fixed and locked by a second nut.

[0021] As a preferred technical solution of this utility model, the magnetic chuck and the magnetic base are both made of permanent magnet material, independently including any one of neodymium iron boron, alnico, or ferrite magnets, and the materials of the electrostatic release rod and the fixing bracket are both stainless steel or aluminum alloy.

[0022] In this invention, the bolts on the magnetic base are set in the same way as those on the magnetic suction cup. The through holes on the fixing bracket facilitate the fixing and installation of the magnetic base, and the anti-loosening nuts are used for locking. The static discharge rod is made of stainless steel, which has good conductivity, corrosion resistance, light weight, and aesthetics. The explosion-proof touch ball can be made of stainless steel or semiconductor material.

[0023] As a preferred technical solution of this utility model, the electrostatic release rod is provided on both sides of the sampling port at the top of the oil storage tank, and the horizontal distance between the rod and the sampling port is more than 1.5m, such as 1.5m, 1.6m, 1.7m, 1.8m, 1.9m, 2.0m, 2.2m, 2.4m or 2.5m, etc., but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0024] As a preferred technical solution of this utility model, the top of the oil storage tank is provided with a grounding metal component, which includes any one of galvanized flat steel, galvanized round steel, copper-clad steel or stainless steel flat steel.

[0025] As a preferred technical solution of this utility model, the electrostatic release rod is connected to the grounding metal part through a grounding wire, and the grounding wire includes any one of insulated copper wire, braided copper wire, copper core stranded wire or copper core flexible cable.

[0026] In this invention, based on the location of the sampling port on the top of the tank, electrostatic release rods are installed 1.5m away on both sides of the sampling port. The electrostatic release rods use yellow-green insulated copper wires as grounding wires and are connected to the grounding metal on the top of the tank, ensuring a reliable connection between the two.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] (1) The device of this utility model connects the sampling tool with the magnetic component and also sets the magnetic component on the electrostatic release rod. Through the magnetic attraction connection between the magnetic components, the sampling tool can be grounded through the electrostatic release rod, which solves the problems of complicated on-site grounding operation and unreliable temporary grounding. By integrating with the human body electrostatic release, the reliability of the grounding connection is improved.

[0029] (2) The device described in this utility model has a simple structure, is easy to operate and use, and has high reliability in grounding connection, which reduces the possibility of electrostatic safety accidents. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of the explosion-proof electrostatic discharge device for the top of an oil storage tank provided in Embodiment 1 of this utility model;

[0031] Figure 2 This is a schematic diagram of the connection structure between the sampling tool and the magnetic chuck provided in Embodiment 1 of this utility model;

[0032] Figure 3 This is a front view of the connection structure between the fixed bracket and the magnetic chassis provided in Embodiment 1 of this utility model;

[0033] Figure 4 This is a side view of the connection structure between the fixed bracket and the magnetic chassis provided in Embodiment 1 of this utility model;

[0034] Among them, 1-sampling tool, 2-magnetic suction cup, 3-magnetic base, 4-static discharge rod, 41-fixed bracket, 411-through hole, 5-explosion-proof touch ball, 6-sampling port, 7-grounding metal part, 8-grounding wire. Detailed Implementation

[0035] To better illustrate this utility model and facilitate understanding of its technical solution, the present utility model is further described in detail below. However, the following embodiments are merely simplified examples of this utility model and do not represent or limit the scope of protection of this utility model. The scope of protection of this utility model is subject to the claims.

[0036] The following are typical but non-limiting embodiments of this utility model:

[0037] Example 1:

[0038] This embodiment provides an explosion-proof electrostatic discharge device for the top of an oil storage tank. A schematic diagram of the explosion-proof electrostatic discharge device is shown below. Figure 1As shown, the system includes a sampling tool 1, a magnetic chuck 2, a magnetic base 3, an electrostatic release rod 4, and an explosion-proof touch ball 5. One end of the sampling tool 1 extends into the oil storage tank through a sampling port 6 on the top of the tank, and the other end of the sampling tool 1 is connected to the magnetic chuck 2. A schematic diagram of the connection structure is shown below. Figure 2 As shown, the magnetic base 3 is fixedly installed on the side of the electrostatic release rod 4, the magnetic suction cup 2 and the magnetic base 3 are magnetically connected, the explosion-proof touch ball 5 is set on the top of the electrostatic release rod 4, and the electrostatic release rod 4 is grounded.

[0039] The sampling tool 1 includes a sampling rope and a metal sampler, and the sampling rope is a cotton rope with built-in copper wire.

[0040] When in use, one end of the sampling rope is connected to a metal sampler, which penetrates into the oil storage tank through the sampling port 6. The other end of the sampling rope is a connector lug, which is fixedly connected to a magnetic chuck 2.

[0041] The magnetic chuck 2 has a first bolt on one side, and the first bolt has external threads. The sampling rope's wiring lug is fitted onto the first bolt, and then the first nut is threadedly connected to the first bolt.

[0042] The height of the electrostatic release rod 4 is 1.0m, and a fixed bracket 41 is welded to the side of the electrostatic release rod 4. The center position of the fixed bracket 41 is 0.8m away from the bottom of the electrostatic release rod 4.

[0043] The fixed bracket 41 is provided with a through hole 411, and the magnetic chassis 3 is fixedly installed on the fixed bracket 41. The main view of the connection structure between the fixed bracket and the magnetic chassis is shown below. Figure 3 As shown, its side view is as follows Figure 4 As shown.

[0044] The magnetic base 3 has a second bolt on one side. The second bolt has external threads. The second bolt passes through the through hole 411 on the fixing bracket 41 and is then fixed and locked with a second nut.

[0045] The magnetic chuck 2 and the magnetic base 3 are both made of neodymium iron boron, and the electrostatic release rod 4 and the fixing bracket 41 are both made of stainless steel.

[0046] The electrostatic discharge rod 4 is installed on both sides of the sampling port 6 at the top of the oil storage tank, and the horizontal distance between the rod and the sampling port 6 is 1.6m.

[0047] The top of the oil storage tank is equipped with a grounding metal component 7, which is a galvanized flat steel.

[0048] The static discharge rod 4 is connected to the grounded metal part 7 via a grounding wire 8, which is an insulated copper wire.

[0049] Example 2:

[0050] This embodiment provides an explosion-proof electrostatic discharge device for the top of an oil storage tank. The explosion-proof electrostatic discharge device includes a sampling tool 1, a magnetic chuck 2, a magnetic base 3, an electrostatic discharge rod 4, and an explosion-proof touch ball 5. One end of the sampling tool 1 extends into the oil storage tank through a sampling port 6 on the top of the oil storage tank, and the other end of the sampling tool 1 is connected to the magnetic chuck 2. The magnetic base 3 is fixedly installed on the side of the electrostatic discharge rod 4, and the magnetic chuck 2 and the magnetic base 3 are magnetically connected. The explosion-proof touch ball 5 is disposed on the top of the electrostatic discharge rod 4, and the electrostatic discharge rod 4 is grounded.

[0051] The sampling tool 1 includes a sampling rope and a metal sampler, and the sampling rope is a metal fiber rope.

[0052] When in use, one end of the sampling rope is connected to a metal sampler, which penetrates into the oil storage tank through the sampling port 6. The other end of the sampling rope is a connector lug, which is fixedly connected to a magnetic chuck 2.

[0053] The magnetic chuck 2 has a first bolt on one side, and the first bolt has external threads. The sampling rope's wiring lug is fitted onto the first bolt, and then the first nut is threadedly connected to the first bolt.

[0054] The height of the electrostatic release rod 4 is 0.9m, and a fixed bracket 41 is welded to the side of the electrostatic release rod 4. The center position of the fixed bracket 41 is 0.75m away from the bottom of the electrostatic release rod 4.

[0055] The fixed bracket 41 is provided with a through hole 411, and the magnetic chassis 3 is fixedly installed on the fixed bracket 41.

[0056] The magnetic base 3 has a second bolt on one side. The second bolt has external threads. The second bolt passes through the through hole 411 on the fixing bracket 41 and is then fixed and locked with a second nut.

[0057] The magnetic chuck 2 and the magnetic base 3 are both made of AlNiCo, and the electrostatic release rod 4 and the fixing bracket 41 are both made of aluminum alloy.

[0058] The electrostatic discharge rod 4 is installed on both sides of the sampling port 6 at the top of the oil storage tank, and the horizontal distance between the rod and the sampling port 6 is 1.5m.

[0059] The top of the oil storage tank is equipped with a grounding metal component 7, which is made of copper-clad steel.

[0060] The static discharge rod 4 is connected to the grounding metal part 7 via a grounding wire 8, which is a braided copper wire.

[0061] Example 3:

[0062] This embodiment provides an explosion-proof electrostatic discharge device for the top of an oil storage tank. The explosion-proof electrostatic discharge device includes a sampling tool 1, a magnetic chuck 2, a magnetic base 3, an electrostatic discharge rod 4, and an explosion-proof touch ball 5. One end of the sampling tool 1 extends into the oil storage tank through a sampling port 6 on the top of the oil storage tank, and the other end of the sampling tool 1 is connected to the magnetic chuck 2. The magnetic base 3 is fixedly installed on the side of the electrostatic discharge rod 4, and the magnetic chuck 2 and the magnetic base 3 are magnetically connected. The explosion-proof touch ball 5 is disposed on the top of the electrostatic discharge rod 4, and the electrostatic discharge rod 4 is grounded.

[0063] The sampling tool 1 includes a sampling rope and a metal sampler, and the sampling rope is a cotton rope with built-in copper wire.

[0064] When in use, one end of the sampling rope is connected to a metal sampler, which penetrates into the oil storage tank through the sampling port 6. The other end of the sampling rope is a connector lug, which is fixedly connected to a magnetic chuck 2.

[0065] The magnetic chuck 2 has a first bolt on one side, and the first bolt has external threads. The sampling rope's wiring lug is fitted onto the first bolt, and then the first nut is threadedly connected to the first bolt.

[0066] The height of the static discharge rod 4 is 1.1m. A fixed bracket 41 is welded to the side of the static discharge rod 4. The center of the fixed bracket 41 is 0.9m away from the bottom of the static discharge rod 4.

[0067] The fixed bracket 41 is provided with a through hole 411, and the magnetic chassis 3 is fixedly installed on the fixed bracket 41.

[0068] The magnetic base 3 has a second bolt on one side. The second bolt has external threads. The second bolt passes through the through hole 411 on the fixing bracket 41 and is then fixed and locked with a second nut.

[0069] The magnetic chuck 2 and the magnetic base 3 are both made of ferrite magnets, and the electrostatic release rod 4 and the fixing bracket 41 are both made of stainless steel.

[0070] The electrostatic discharge rod 4 is installed on both sides of the sampling port 6 at the top of the oil storage tank, and the horizontal distance between the rod and the sampling port 6 is 1.8m.

[0071] The top of the oil storage tank is equipped with a grounding metal component 7, which is a stainless steel flat bar.

[0072] The electrostatic discharge rod 4 is connected to the grounding metal part 7 via a grounding wire 8, which is a copper core flexible cable.

[0073] When the explosion-proof electrostatic discharge device in the above embodiments is used for sampling from the top of an oil storage tank, the sampling tool is pre-connected to a magnetic chuck, and a fixed bracket and a magnetic base are added to the traditional electrostatic discharge rod and explosion-proof touch ball, so that the magnetic chuck and the magnetic base can be magnetically attracted together. At the same time, the grounding connection of the sampling tool is realized, which effectively solves the problems of complex on-site grounding operation and unreliable temporary grounding of traditional sampling tools, and increases the reliability of the grounding connection.

[0074] As can be seen from the above embodiments, the device of this utility model connects the sampling tool to the magnetic component, and also sets the magnetic component on the electrostatic release rod. Through the magnetic attraction connection between the magnetic components, the sampling tool can be grounded through the electrostatic release rod, which solves the problems of complicated on-site grounding operation and unreliable temporary grounding. By integrating with the human body electrostatic release, the reliability of the grounding connection is improved. The device has a simple structure, is easy to operate and use, has high grounding connection reliability, and reduces the possibility of electrostatic safety accidents.

[0075] The applicant declares that this utility model is illustrated through the above embodiments, but it is not limited to the above-described detailed device, meaning that this utility model does not necessarily rely on the above-described detailed device to be implemented. Those skilled in the art should understand that any improvements to this utility model, equivalent substitutions for the device, additions of auxiliary devices, and selection of specific methods, etc., all fall within the protection and disclosure scope of this utility model.

Claims

1. An explosion-proof static electricity discharge device for a roof of an oil storage tank, characterized by, The explosion-proof static electricity release device comprises a sampling tool, a magnetic suction disc, a magnetic base, a static electricity release rod and an explosion-proof touch ball, one end of the sampling tool is inserted into the inside of the oil tank through a sampling port on the top of the oil tank, the other end of the sampling tool is connected with the magnetic suction disc, the magnetic base is fixedly installed on the side of the static electricity release rod, the magnetic suction disc and the magnetic base are magnetically connected, the explosion-proof touch ball is arranged on the top of the static electricity release rod, and the static electricity release rod is grounded.

2. The explosion-proof static electricity discharge device for the roof of an oil storage tank according to claim 1, characterized by, The sampling tool comprises a sampling rope and a metal sampler, and the sampling rope is a conductive rope, which includes a cotton rope with a built-in copper wire or a metal fiber rope.

3. The explosion-proof static electricity discharge device for the roof of an oil storage tank according to claim 2, characterized by, When the sampling rope is used, one end is connected to the metal sampler, the metal sampler is inserted into the inside of the oil tank through the sampling port, and the other end of the sampling rope is provided with a wire connecting nose which is fixedly connected to the magnetic suction disc.

4. The explosion-proof static electricity discharge device for the roof of an oil storage tank according to claim 3, characterized by One side of the magnetic suction disc is provided with a first bolt which is provided with external threads, the wire connecting nose of the sampling rope is sleeved on the first bolt, and a first nut is threadedly connected with the first bolt.

5. The explosion-proof static electricity discharge device for the roof of an oil storage tank according to claim 1, wherein The height of the static electricity release rod is 0.9-1.1 m, a fixing support is welded on the side of the static electricity release rod, and the distance between the center of the fixing support and the bottom of the static electricity release rod is 0.75-0.9 m. The fixing support is provided with a through hole, and the magnetic base is fixedly installed on the fixing support.

6. The explosion-proof static electricity discharge device for the roof of an oil storage tank according to claim 5, characterized by One side of the magnetic base is provided with a second bolt which is provided with external threads, the second bolt passes through the through hole in the fixing support, and a second nut is used for fixed locking.

7. The explosion-proof static electricity discharge device for the roof of an oil storage tank according to claim 5, characterized by The magnetic suction disc and the magnetic base are made of permanent magnet materials, and independently comprise any one of neodymium iron boron, aluminum nickel cobalt or ferrite magnet, and the materials of the static electricity release rod and the fixing support comprise stainless steel or aluminum alloy.

8. The explosion-proof static electricity discharge device for the roof of an oil storage tank according to claim 1, characterized by, The static electricity release rod is arranged on both sides of the sampling port on the top of the oil tank, and the horizontal distance between the static electricity release rod and the sampling port is greater than 1.5 m.

9. The explosion-proof static electricity discharge device for the roof of an oil storage tank according to claim 8, characterized by The top of the oil tank is provided with a grounding metal piece, and the grounding metal piece comprises any one of galvanized flat steel, galvanized round steel, copper-clad steel or stainless steel flat steel.

10. The explosion-proof static electricity discharge device for the roof of an oil storage tank according to claim 9, characterized by The static electricity release rod is connected with the grounding metal piece through a grounding wire, and the grounding wire comprises any one of insulated copper wire, copper braid wire, copper core soft string or copper core soft cable.

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