Glass fiber reinforced plastic tank body with conductive structure and manufacturing method thereof

Abstract

The application belongs to the technical field of glass steel tank body, and particularly relates to a glass steel tank body with a conductive structure and a manufacturing method thereof. The tank body structure is provided with a conductive mesh, and the tank body comprises a cylinder body, a top and a bottom. The conductive mesh is arranged in the inner wall of the cylinder body and forms a sandwich structure with the cylinder body. The cylinder body is provided with a conductive strip which is in communication with the cavity in the cylinder body. The conductive mesh is connected with the conductive strip through a connecting part, and the conductive mesh is grounded through an extension part. The application discloses a manufacturing method of the glass steel tank body. The conductive strip is exposed in the inner cavity of the tank body, and the conductive mesh is filled into the inner wall in the form of an inner lining sandwich to avoid the irregular conductive mesh being exposed in the cavity. The conductive structure arranged in the application can guide and release the static electricity generated in the glass steel tank body, avoid the charge accumulation of the internal materials, avoid the danger of combustion and explosion, and ensure the safety of the tank body.

Description

Technical Field

[0001] This invention belongs to the field of fiberglass tank technology, specifically relating to a fiberglass tank with a conductive structure and its manufacturing method. Background Technology

[0002] Fiberglass tanks, with their lightweight, high strength, and corrosion resistance, are widely used as material storage and transfer equipment in various fields such as chemical, energy, and food processing. However, fiberglass itself does not have electrical conductivity. When storing or transferring dry powder materials or flammable liquids such as oil, static electricity can accumulate inside the tank. If the fiberglass tank cannot dissipate this static electricity in time, it can easily ignite the materials inside. If flammable dry powder materials are stored, it may even cause a dust explosion, posing a serious threat to production safety.

[0003] To address the electrostatic safety issues of fiberglass tanks, a conventional approach is to install a conductive mesh on the inner wall of the tank. This mesh is connected to an external grounding device via metal wire, thereby dissipating static electricity from the tank.

[0004] However, the conductive mesh and the fiberglass tank are separate structures, and their integration is poor. With long-term use, they are prone to loosening and falling off, which affects the static electricity discharge effect. In addition, dry powder and other materials can easily get stuck in the mesh of the conductive mesh, making it difficult to clean the residual materials in the tank. Furthermore, ordinary iron conductive mesh is easily corroded by corrosive materials, contaminating the materials. Summary of the Invention

[0005] In order to solve the problems existing in the prior art, the present invention provides a fiberglass tank with a conductive structure and a method for manufacturing the same. The conductive mesh is wrapped inside the side wall of the fiberglass tank to avoid material residue caused by the conductive mesh. The conductive strip is made of passivated stainless steel or other corrosion-resistant metal material, and has a regular shape for easy cleaning.

[0006] The specific technical solution adopted in this invention is as follows:

[0007] A fiberglass tank with a conductive structure is disclosed. The tank is equipped with a conductive mesh. The tank includes a cylindrical body, a top plate, and a bottom plate. The cylindrical body, top plate, and bottom plate are fitted together to form a cavity. Crucially, the conductive mesh is located inside the side wall of the cylindrical body and forms a sandwich structure with the cylindrical body. The side wall of the cylindrical body is provided with a conductive strip, which communicates with the cavity inside the cylindrical body. The conductive mesh is connected to the conductive strip via a connecting part, and the conductive mesh is connected to a grounding device outside the cavity via an extension part.

[0008] The cavity is provided with multiple conductive strips arranged around the side wall of the cavity, and the conductive strips are arranged vertically.

[0009] The conductive strip is attached to the inner side of the cylinder and forms an arched structure that protrudes from the cylinder into the cavity. The connecting part is a connecting nail located on the back of the conductive strip, and the overhanging end of the connecting nail is connected to the conductive mesh.

[0010] The cantilever end of the connecting nail is provided with a nail head, and the end face of the nail head is a spherical cap surface.

[0011] A conductive support is detachably connected to the conductive strip, and the conductive support extends from the conductive strip into the cavity.

[0012] The conductive support is provided with a conductive rod, which is suspended upward from the conductive support.

[0013] The conductive support is provided with a metal chain, one end of which is connected to the conductive support, and the other end of which hangs freely in the cavity.

[0014] The outer edge of the conductive mesh has a flanged structure and is attached to the outer wall of the bottom by means of a conductive ring clamp.

[0015] A set of resin collars are nested at intervals on the conductive strip, and the outer surface of the resin collars is flush with the surface of the conductive strip.

[0016] The conductive mesh is made of metal or carbon fiber.

[0017] A method for manufacturing a fiberglass tank with a conductive structure includes the following steps:

[0018] S1. The outer surface of the inflatable mold used for winding the tank body is provided with a set of strip-shaped grooves. The conductive strips are placed in each groove, and the connecting part extends outward from the groove opening.

[0019] S2. The inner lining of the cylinder is made on the mold, and the connecting part passes through the inner lining;

[0020] S3. Lay a conductive mesh on the outside of the inner lining layer and weld the connecting part to the conductive mesh;

[0021] S4. Weld an extended portion to the end of the conductive mesh, the extended portion extending outward from the end of the inner liner layer;

[0022] S5. Apply inner lining resin to the conductive mesh to fill the mesh holes of the conductive mesh and form a masking layer on the outside of the conductive mesh.

[0023] S6. Create the top and bottom sections separately;

[0024] S7. Assemble the inner lining with the top and bottom, and fill and bond the gaps between the inner lining and the bottom for the extension to pass through with inner lining resin and chopped fiber felt. The movable end of the extension overlaps the outer surface of the bottom and is temporarily fixed to form the equipment shell skeleton.

[0025] S8. The equipment shell frame is covered with resin and glass fiber using a winding machine. The inner lining layer and the resin and glass fiber on the outside form a cylinder, and the movable end of the outer extension is outside the coverage area.

[0026] S9. Drill holes in the cured tank and install pipes, spray a protective layer, and complete the tank manufacturing.

[0027] The beneficial effects of this invention are:

[0028] This invention exposes conductive strips in the inner cavity of the tank and fills the conductive mesh for conduction into the side wall with an inner lining. This avoids the irregularly shaped conductive mesh being exposed in the cavity. At the same time, the conductive strips are made of corrosion-resistant conductive materials or passivated stainless steel, and have a regular shape, which facilitates conduction while avoiding material residue and reducing maintenance difficulty.

[0029] The conductive structure provided by this invention conducts and releases static electricity generated inside the fiberglass tank, preventing the accumulation of charge in the internal materials, avoiding the risk of combustion and explosion, and ensuring the safety of the tank in use. Attached Figure Description

[0030] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0031] Figure 2 for Figure 1 An enlarged schematic diagram of part A in the middle;

[0032] Figure 3 This is a schematic diagram of the horizontal cross-section of the tank.

[0033] Figure 4 for Figure 3 A schematic diagram of Part B;

[0034] In the attached diagram, 1 is the conductive mesh, 2 is the cylinder, 3 is the top, 4 is the bottom, 5 is the conductive ring, 6 is the conductive strip, 601 is the resin collar, 7 is the connecting part, 701 is the nail head, 8 is the extension part, 9 is the conductive support, 901 is the conductive rod, and 902 is the metal chain. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0036] Specific implementation examples Figure 1 and Figure 3As shown, this invention relates to a fiberglass tank with a conductive structure. The tank is provided with a conductive mesh 1. The tank includes a cylindrical body 2, a top plate 3, and a bottom plate 4. The cylindrical body 2, the top plate, and the bottom plate 4 are fitted together to form a cavity. The conductive mesh 1 is located inside the side wall of the cylindrical body 2 and is fitted with the cylindrical body 2 to form a sandwich structure. A conductive strip 6 is provided inside the cavity. The conductive mesh 1 is connected to the conductive strip 6 by means of a connecting part 7, so that the conductive structure formed by the conductive strip 6, the connecting part 7, and the conductive mesh 1 is integrated with the tank, effectively preventing the conductive structure from loosening and falling off the tank. The conductive mesh 1 is connected to a grounding device outside the cavity by means of an extension part 8 to conduct static electricity inside the cavity.

[0037] The cavity of this invention is provided with a plurality of conductive strips 6 arranged sequentially around the axial direction of the cavity. The conductive strips 6 are arranged vertically to ensure that the static electricity of materials at different heights and areas in the cavity can be quickly conducted to the conductive mesh 1, avoiding the accumulation of static electricity in the cavity. There are no mesh holes between the vertically arranged conductive strips 6, which facilitates the complete discharge of materials from the tank and effectively reduces the material residue in the tank and the difficulty of cleaning.

[0038] like Figure 1 The embodiment shown is a vertically arranged material tank used to store dry materials such as flour.

[0039] Furthermore, such as Figure 4 As shown, the conductive strip 6 is attached to the inner side of the cylinder 2 and forms an arched structure that protrudes from the cylinder 2 into the cavity. The connecting part 7 is a connecting nail provided on the back of the conductive strip 6, and the overhanging end of the connecting nail is connected to the conductive mesh 1.

[0040] The cantilever end of the connecting nail is provided with a nail head 701. The end face of the nail head 701 is a spherical crown surface. The outer surface of the nail head 701 is round and smooth to avoid scratching the glass fiber or resin of the cylinder 2.

[0041] The connecting pins provided in this invention serve two purposes: firstly, to temporarily fix the conductive mesh 1, and secondly, to act as a conductive connection structure between the conductive mesh 1 and the conductive strip 6, so that the internal static charge can be smoothly discharged.

[0042] Furthermore, bolt holes are provided on the side wall or top of the conductive strip 6, and a conductive bracket 9 can be detachably connected by means of the bolt holes. The conductive bracket 9 extends from the conductive strip 6 into the cavity. In this embodiment, the conductive bracket 9 is arranged in a cross shape in the cavity. The two ends of the conductive bracket 9 are threaded to the conductive strip 6. Even for materials with poor flowability, such as flour, it can ensure that the static electricity generated inside the flour pile can be smoothly discharged and avoid accumulation.

[0043] Furthermore, the conductive support 9 is provided with a conductive rod 901, which is suspended upward from the conductive support 9.

[0044] By extending the conductive rod 901 along the line, static electricity can be removed when the material enters, preventing the accumulation of static electricity caused by friction as the material falls, and ensuring the safety of material feeding.

[0045] Furthermore, such as Figure 1 As shown, a metal chain 902 is also provided on the conductive support 9. One end of the metal chain 902 is connected to the conductive support 9, and the other end of the metal chain 902 hangs freely in the cavity.

[0046] Because the bottom 4 of the fiberglass tank is made separately, the contact range of the conductive strip 6 can be extended by the suspension metal chain 902, thereby ensuring that static electricity can be removed when the material is discharged. The metal chain 902 has a certain degree of flexibility and can swing to a certain extent with the material discharge, avoiding stress transmission to the conductive strip 6, which could cause damage to the conductive strip 6 or even the side wall of the tank, thus improving the durability of the tank.

[0047] The outer extension 8 is attached to the outer wall of the bottom 4 and clamped by a conductive ring 5. For example... Figure 2 As shown, the conductive ring 5 can be used as part of the tank support. Therefore, as long as the tank support is grounded, a conductive path can be established from the conductive strip 6, metal mesh, extension, conductive ring, tank support, and finally to the ground, ensuring safe use and reducing the difficulty of setting up the conductive structure. Furthermore, there is no need to set up a separate lead to the ground, which reduces the equipment investment cost.

[0048] Furthermore, a set of resin collars 601 are nested at intervals on the conductive strip 6, with the outer surface of the resin collars 601 flush with the surface of the conductive strip 6. These resin collars further secure the conductive strip 6, enhancing its durability and resistance to deformation.

[0049] The conductive mesh 1 is a metal mesh or a carbon fiber mesh.

[0050] This invention also discloses a method for manufacturing a fiberglass tank with a conductive structure, comprising the following steps:

[0051] S1. A set of strip-shaped grooves are opened on the outer surface of the inflatable mold used for winding the tank body. The conductive strips 6 are placed in each groove respectively, and the connecting part 7 extends outward from the groove opening.

[0052] Before the conductive strip 6 is embedded into the groove, several sets of glass fiber mats cut into strips are laid in the groove and impregnated with resin. Then the conductive strip 6 is embedded into the groove. The glass fiber mats fill the gaps to ensure that the conductive strip 6 is fixed and stable. After drying, the glass fiber mats form a resin collar 601.

[0053] S2. Wrap the inner lining of the cylinder 2 around the mold, avoiding the connecting part 7, so that the connecting part 7 can pass through the inner lining, while the end of the reserved strip of glass fiber felt is also led out to the outside of the inner lining.

[0054] S3. A conductive mesh 1 is laid on the outside of the inner lining layer. The metal mesh or carbon fiber mesh has pre-reserved mesh holes to facilitate resin impregnation and the interweaving and fixing of the glass fibers on the inner and outer sides.

[0055] If the conductive mesh 1 is a metal mesh with holes, the connecting part 7 is welded, bolted, or riveted to the conductive mesh 1 to form a conductive fixed connection structure; then the end of the reserved strip of glass fiber felt is passed through the mesh of the conductive mesh 1 and impregnated with resin and pasted on the outside of the conductive mesh 1.

[0056] If the conductive mesh 1 is a carbon fiber mesh, the connecting part is connected to the conductive mesh 1 by riveting. The reserved strip of glass fiber felt is attached to the inner layer of the carbon fiber mesh. After the carbon fiber mesh is attached to the inner lining layer, resin is evenly brushed on the outer side of the carbon fiber mesh for subsequent operations.

[0057] S4. An extension portion 8 is welded or integrally formed at the end of the conductive mesh 1, and the extension portion 8 extends outward from the end of the inner liner layer.

[0058] S5. Apply resin to the conductive mesh 1, and use the resin to adhere chopped fiber felt to fill the mesh holes of the conductive mesh 1. Level the mesh holes of the conductive mesh 1 to avoid cavities, and continue to wrap a layer of strip-shaped glass fiber felt so that the outer side of the conductive mesh 1 forms the inner lining layer of the cylinder 2.

[0059] S6. Make the top 3 and bottom 4, both of which are hat-shaped structures;

[0060] S7. Assemble the inner lining layer with the top 3 and bottom 4. The inner lining layer extends into the top 3 and bottom 4 by a certain distance. Fill, bond and level the gap between the inner lining layer and the bottom 4 for the outer extension 8 with resin and chopped fiber felt. The outer extension 8 has multiple sets of discrete strip structures. The movable end of the outer extension 8 is overlapped on the outer surface of the bottom 4 in a flanged state and temporarily fixed. The inner lining layer covering the lower part of the outer extension 8 is covered inside the bottom 4 and bonded to the bottom 4. Then, the reserved edge of the bottom 4 is bonded to the inner lining layer to form the equipment shell skeleton.

[0061] S8. The equipment shell skeleton is coated with resin and glass fiber using a winding machine to form an outer shell layer. The inner lining layer and the resin and glass fiber outside it form a cylinder 2. The movable end of the outer extension 8 is outside the coating range and is not coated, so that the outer extension 8 is left outside, which facilitates the conductive fixing with the conductive ring 5 in the later stage.

[0062] S9. Drill holes in the cured tank and install pipes, spray a protective layer, and complete the tank manufacturing.

Claims

1. A glass fiber reinforced plastic tank with electrically conductive structure, the tank is provided with an electrically conductive mesh (1), the tank comprises a barrel (2), a top (3) and a bottom (4), the barrel (2), the top (3) and the bottom (4) are matched and buckled to form a cavity, characterized in that: The conductive mesh (1) is arranged inside the side wall of the cylinder (2) and forms a sandwich structure with the cylinder (2), the side wall of the cylinder (2) is provided with a conductive strip (6), the conductive strip (6) is communicated with the cavity in the cylinder (2), the conductive mesh (1) is connected with the conductive strip (6) through a connecting part (7), and the conductive mesh (1) is connected with the grounding device outside the cavity through an extension part (8); The conductive strip (6) is detachably connected with a conductive support (9), and the conductive support (9) is arranged to extend into the cavity from the conductive strip (6); The conductive support (9) is provided with a conductive rod (901), and the conductive rod (901) is arranged to extend upward from the conductive support (9); The conductive support (9) is provided with a metal chain (902), one end of the metal chain (902) is connected with the conductive support (9), and the other end of the metal chain (902) freely hangs in the cavity; The extension part (8) of the conductive mesh (1) is in a flange structure and is attached to the outer wall of the bottom (4) through a conductive ring (5) clamp; A group of resin sleeve rings (601) are arranged on the conductive strip (6) in a spaced manner, and the outer surface of the resin sleeve ring (601) is flush with the surface of the conductive strip (6).

2. A glass reinforced plastic tank body with electrically conductive structure according to claim 1, characterized in that: A plurality of conductive strips (6) are arranged around the side wall of the cavity, and the conductive strips (6) are arranged in a vertical direction respectively.

3. The FRP tank with electrically conductive structure according to claim 1, characterized in that: The conductive strip (6) is attached to the inner side of the cylinder (2) and forms an arch-shaped structure protruding into the cavity from the cylinder (2), and the connecting part (7) is a connecting nail arranged on the back of the conductive strip (6), and the protruding end of the connecting nail is connected with the conductive mesh (1).

4. The FRP tank with electrically conductive structure according to claim 3, characterized in that: The protruding end of the connecting nail is provided with a nail cap (701), and the end face of the nail cap (701) is a spherical cap surface.

5. The FRP tank with electrically conductive structure according to claim 1, characterized in that: The conductive mesh (1) is a metal mesh or a carbon fiber mesh.

6. A manufacturing method for manufacturing the can body as claimed in claim 1, characterized by, The method comprises the following steps: S1, a group of strip-shaped grooves are formed on the outer surface of the inflation mold for winding the tank, the conductive strip (6) is arranged in each groove, and the connecting part (7) protrudes outward from the groove opening; S2, the inner liner of the cylinder (2) is wound outside the mold, the inner liner avoids the connecting part (7), so that the connecting part (7) penetrates through the inner liner; S3, the conductive mesh (1) is laid outside the inner liner, and the connecting part (7) is fixedly connected with the conductive mesh (1); S4, the extension part (8) is arranged at the end of the conductive mesh (1), and the extension part (8) is arranged to extend outward from the end of the inner liner; S5, the conductive mesh (1) is coated with resin, the resin is used to paste short-cut fiber felt to fill the mesh holes of the conductive mesh (1), and a shielding layer is formed on the outer side of the conductive mesh (1); S6, the top (3) and the bottom (4) are respectively manufactured; S7, the inner liner is assembled with the top (3) and the bottom (4), the gap through which the extension part (8) passes is filled and bonded by using resin and short-cut fiber felt, the movable end of the extension part (8) is lapped on the outer surface of the bottom (4) and is temporarily fixed, and a device shell skeleton is formed. S8, using winding machine to coat the device shell skeleton with resin and glass fiber, the inner lining and the resin and glass fiber outside form a cylinder (2), the movable end of the extension part (8) is outside the coating range; S9, opening the hole of the cured tank body and installing the pipe, spraying the protective layer, completing the production of the tank body.

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