Ventilation and light transmission device for vertical cylindrical internal floating roof storage tank

Abstract

The present invention discloses a ventilation and light transmission dual-purpose device for a vertical cylindrical internal floating roof storage tank, the device is arranged at the edge of the tank top, a rectangular opening is provided on the tank top plate, the opening is reinforced by a tank top reinforcement ring, and a whole circle of water retaining frame is connected to the edge of the opening, and a semi-cylindrical escutcheon is installed on the upper part of the opening; one side of the semi-cylindrical escutcheon is connected to the tank top reinforcement ring through a connecting hinge, and the rectangular hole surrounded by the tank top plate when the semi-cylindrical escutcheon is closed is blocked by a bird-proof net, and the bird-proof net is connected to the semi-cylindrical escutcheon; a locking device is installed between the semi-cylindrical escutcheon and the tank top reinforcement ring, and a handle is installed on the upper part of the semi-cylindrical escutcheon. Compared with the traditional independent setting scheme of the tank top ventilation hole and the light transmission hole, the present invention realizes the integration of the ventilation and light transmission functions of the storage tank, which can effectively reduce the number of openings on the storage tank, reduce material consumption, reduce operation and maintenance facilities, and improve the lighting effect and the convenience of operation of the light transmission hole.

Description

Technical Field

[0001] The invention relates to the field of storage and transportation of petrochemical products, and in particular to a safety ventilation device for an internal floating roof storage tank. Background Art

[0002] The tank top vent is set on the top edge of the internal floating roof tank for storing light oil products without sealing requirements or volatile chemical products. It is a safe ventilation device used to disperse the oil vapor in the tank and prevent the oil vapor in the tank from reaching the explosion limit. The traditional tank top vent is a bow-shaped structure, one end of which is welded to the tank top opening, and the other end opens downward and is welded with a bird-proof wire mesh; Figure 5 , Figure 6 As shown in the figure, the light-transmitting hole of the traditional storage tank is set on the top of the tank, which is generally a round hole with a diameter of 500-600mm, sealed with a flange and a flange cover. When lighting is required, all bolts, nuts and fasteners need to be removed and the flange cover needs to be opened to achieve lighting. In order to achieve the above two functions, multiple openings need to be set on the top of the storage tank respectively; and a large number of fasteners need to be disassembled and installed when the light-transmitting hole is opened and closed, which is inconvenient to operate. Summary of the invention

[0003] The purpose of the present invention is to provide a ventilation and light transmission device for a vertical cylindrical internal floating roof storage tank, so as to solve the problems of the currently used independent tank top ventilation holes and tank top light transmission holes, such as many tank top openings, many operation and maintenance facilities, large material consumption, and inconvenient operation of the tank top light transmission hole switch.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention includes the following contents: a ventilation and light-transmitting dual-purpose device for a vertical cylindrical internal floating roof storage tank, characterized in that the ventilation and light-transmitting dual-purpose device is arranged at the edge of the outer tank top of the vertical cylindrical internal floating roof storage tank, a rectangular opening is opened in the tank top plate, the opening is reinforced by a tank top reinforcement ring, and a whole circle of water retaining frame is connected to the edge of the opening, and a semi-cylindrical escutcheon is installed on the upper part of the opening; one side of the semi-cylindrical escutcheon is connected to the tank top reinforcement ring through a connecting hinge, and when the semi-cylindrical escutcheon is closed, the rectangular hole surrounded by the tank top plate is blocked by a bird-proof net, and the bird-proof net is connected to the semi-cylindrical escutcheon; a locking device is installed between the semi-cylindrical escutcheon and the tank top reinforcement ring, and a handle is installed on the upper part of the semi-cylindrical escutcheon.

[0005] When the ventilation and light-transmitting dual-purpose device is used as a vent under operating conditions, the locking device is locked, the semi-cylindrical escutcheon is in a closed state, and the oil and gas in the storage tank diffuses into the atmosphere through the opening of the tank top plate, the holes of the semi-cylindrical escutcheon, and the bird-proof net in sequence, preventing the oil and gas in the storage tank from reaching the explosion limit.

[0006] When installing and inspecting the ventilation and light-transmitting dual-purpose device, the locking device is opened, and the semi-cylindrical hole cover is pulled up by the handle to be opened by rotating the connecting hinge, so that the upper part of the tank top opening is not blocked, and light enters the storage tank through the opening to realize lighting.

[0007] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0008] The present invention can effectively reduce the number of holes opened on the storage tank, increase the number of operation and maintenance facilities, reduce material consumption, and improve the lighting effect and the convenience of operating the light-transmitting holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without inventiveness.

[0010] Figure 1 It is a schematic diagram of the present invention being used as a vent in a closed state.

[0011] Figure 2 It is a schematic diagram of the present invention being used as a light-transmitting hole when in an open state.

[0012] Figure 3 yes Figure 1 Top view of the .

[0013] Figure 4 yes Figure 1 A-direction view.

[0014] Figure 5 It is the aforementioned conventional tank top vent structure.

[0015] Figure 6 It is the aforementioned light-transmitting hole structure on the top of the traditional storage tank.

[0016] In the attached figure: 1—semi-cylindrical hole cover, 2—handle, 3—bird-proof net, 4—connecting hinge, 5—water-retaining frame, 6—locking device, 7—tank top reinforcement ring, 8—opening. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] The present invention is described in detail below with reference to the accompanying drawings.

[0019] like Figure 1 , Figure 2 , Figure 3As shown, the ventilation and light transmission device for the vertical cylindrical internal floating roof storage tank described in the present invention includes a semi-cylindrical hole cover 1, a handle 2, a bird-proof net 3, a connecting hinge 4, a water-retaining frame 5, a locking device 6, and a tank top reinforcement ring 7.

[0020] The ventilation and light transmission dual-purpose device is arranged at the edge of the outer tank top of a vertical cylindrical internal floating roof storage tank. A rectangular opening 8 is provided on the tank top plate, and the opening is reinforced by a tank top reinforcement ring 7, and a whole circle of water retaining frame 5 is connected to the edge of the opening, and a semi-cylindrical escutcheon 1 is installed on the upper part of the opening; one side of the semi-cylindrical escutcheon 1 is connected to the tank top reinforcement ring 7 through a connecting hinge 4, and when the semi-cylindrical escutcheon 1 is closed, the rectangular hole surrounded by the tank top plate is blocked by a bird-proof net 3, and the bird-proof net 3 is connected to the semi-cylindrical escutcheon 1; a locking device 6 is installed between the semi-cylindrical escutcheon 1 and the tank top reinforcement ring 7, and a handle 2 is installed on the upper part of the semi-cylindrical escutcheon 1.

[0021] like Figure 1 As shown, when the ventilation and light-transmitting dual-purpose device is used as a vent in operating conditions, the locking device 6 is locked, the semi-cylindrical escutcheon 1 is in a closed state, and the oil and gas in the storage tank are diffused into the atmosphere through the opening of the tank top plate, the channel of the semi-cylindrical escutcheon 1, and the bird-proof net 3 in sequence, preventing the oil and gas in the storage tank from reaching the explosion limit.

[0022] like Figure 2 As shown, when the ventilation and light-transmitting dual-purpose device is installed and repaired, the locking device 6 is opened, and the semi-cylindrical hole cover 1 is pulled up by the handle 2 so that it can be turned up and opened by rotating the connecting hinge 4, so that the upper part of the tank top opening is not blocked, and light enters the interior of the storage tank through the opening to realize lighting.

[0023] Bird-proof net 3 should be made of 2-mesh or 3-mesh stainless steel wire mesh;

[0024] The locking device 6 adopts a stainless steel quick-opening manhole locking bolt;

[0025] like Figure 3 As shown, the outer edge of the opening of the device should be 600-800mm away from the tank wall; the edge of the tank top reinforcement ring 7 should be rounded, and the height of the welding foot of the tank top reinforcement ring 7 and the tank top plate should be greater than or equal to the thickness of the thinner part;

[0026] like Figure 4 As shown, the bird-proof net 3 blocks the rectangular hole formed by the semi-cylindrical escutcheon 1 and the tank top reinforcement ring 7. The bird-proof net 3 is only connected to the three sides of the semi-cylindrical escutcheon 1 and cannot be connected to the tank top reinforcement ring 7;

[0027] Determine the number of devices according to the volume of the tank, and try to arrange them diagonally with the manhole on the tank wall.

[0028] The above is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a technician familiar with the field within the technical scope disclosed in the present invention should be covered by the protection scope of the present invention.

Claims

1. A ventilation and light transmission device for a vertical cylindrical internal floating roof storage tank, characterized in that: The ventilation and light transmission device is arranged at the outer tank top edge of a vertical cylindrical internal floating roof storage tank. A rectangular opening (8) is provided on the tank top plate. The opening is reinforced by a tank top reinforcement ring (7). A full circle of water retaining frame (5) is connected to the edge of the opening. A semi-cylindrical escutcheon (1) is installed on the upper part of the opening. One side of the semi-cylindrical escutcheon (1) is connected to the tank top reinforcement ring (7) through a connecting hinge (4). When the semi-cylindrical escutcheon (1) is closed, the rectangular hole enclosed by the tank top plate is blocked by a bird-proof net (3). The bird-proof net (3) is only connected to three sides of the semi-cylindrical escutcheon (1) and is not connected to the tank top reinforcement ring (7). A locking device (6) is installed between the semi-cylindrical escutcheon (1) and the tank top reinforcement ring (7). A handle (2) is installed on the upper part of the semi-cylindrical escutcheon (1).

2. The ventilation and light transmission device for a vertical cylindrical internal floating roof storage tank according to claim 1 is characterized in that: When the ventilation and light-transmitting dual-purpose device is used as a ventilation hole in an operating condition, the locking device (6) is locked, the semi-cylindrical escutcheon (1) is in a closed state, and the oil and gas in the storage tank diffuses into the atmosphere through the opening of the tank top plate, the hole of the semi-cylindrical escutcheon (1), and the bird-proof net (3) in sequence, thereby preventing the oil and gas in the storage tank from reaching the explosion limit.

3. The ventilation and light transmission device for a vertical cylindrical internal floating roof storage tank according to claim 1 is characterized in that: When installing and inspecting the dual-purpose ventilation and light transmission device, the locking device (6) is opened, and the semi-cylindrical hole cover (1) is pulled up by the handle (2) so that it can be turned up and opened by rotating the connecting hinge (4), so that the upper part of the tank top opening is not blocked, and light enters the interior of the storage tank through the opening to realize lighting.

Images