Full-liquid-receiving two-way manhole device for inner floating disc

Abstract

The utility model discloses a full-liquid-receiving bidirectional manhole device for an inner floating disc, which is characterized in that a manhole cover is rotatably and hermetically connected to the upper end of a manhole box body, a filling mechanism is arranged between the manhole cover and the manhole box body, and the filling mechanism is fixedly connected with the manhole cover through an elastic locking mechanism. Full liquid receiving can be achieved, oil gas space is eliminated, VOCs dissipation and potential safety hazards caused by imperfect sealing of accessories of the floating disc can be effectively reduced, bidirectional operation of opening of the manhole device is achieved through cooperation of the filling mechanism and the elastic locking mechanism, and subsequent daily maintenance of the floating disc and a storage tank is greatly facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of oil tank floating plates, in particular to a fully liquid-connected two-way manhole device for an internal floating plate. Background Art

[0002] With the popularization and application of assembled fully liquid-connected internal floating plates, the floating plate body has completely eliminated the oil and gas space. In order to eliminate the oil and gas space throughout the floating plate, the floating plate manhole device also needs to achieve full liquid connection.

[0003] At present, there are two types of floating plate manhole devices adapted to fully liquid-connected floating plates: one is the "floating box type manhole device", and the other is the "traditional flip-type manhole device". As shown in the appended Figure 4 to the appended Figure 5 figures, the floating box type manhole device shown is a common one in the prior art. Due to the double-layer parallel symmetric connection method on the upper and lower planes of the fully liquid-connected floating plate, it is impossible to achieve the function of opening from below upwards and from above downwards on a single manhole device. When the staff needs to install the manhole shown in the appended Figure 4 figures from bottom to top, this manhole can only be opened by loosening the lower connection bolts; when it is necessary to install the manhole shown in the appended Figure 5 figures from top to bottom, the manhole can only be opened by loosening the upper connection bolts. This floating box type manhole structure is a relatively common structure at present. Although it can achieve full liquid connection, its limitation of only being able to open unidirectionally is obvious. The manhole devices installed in these two ways will bring great inconvenience to the daily maintenance of future storage tanks. When performing maintenance, if the personnel need to reach the upper part of the floating plate but cannot reach the upper part of the floating plate by opening the manhole device, it is necessary to enter the upper part of the floating plate through the 2.4m manhole of the tank, which will cause problems such as: re-evaluation of safety, formulation of new plan measures, delay of time, increase of cost, etc., and vice versa. In addition, this floating box type manhole device can only be equipped with a single manhole ladder alone. It cannot be combined with the manhole box body and can only install an independent ladder in the length direction of the box body to facilitate the up and down movement of personnel. The opening and closing of this manhole are also relatively cumbersome, and a new seal needs to be made every time it is opened, which also increases the inconvenience from the perspective of floating plate maintenance. As shown in the appended Figure 6 figures, the traditional flip-type manhole device shown is a common one in the prior art. This manhole device can achieve up and down opening, but its manhole cover plate is a single-layer structure, and the opening lock is not firm and reliable. Because the single-point supported lock handle will have a certain swing, resulting in the lock not being firm and the seal not being tight, etc.; in addition, it cannot eliminate the oil and gas space in the manhole box and cannot achieve full liquid connection. Content of the Utility Model

[0004] The purpose of the utility model is to provide a manhole device that can achieve full liquid connection, two-way controlled locking and fixation and has strong sealing performance, especially to enhance the convenience of operation of the floating plate by the staff during daily maintenance in subsequent use, and effectively solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions.

[0006] A fully liquid-contacted bidirectional manhole device for an inner floating plate comprises a manhole box, a manhole cover, a filling mechanism and an elastic locking mechanism. The upper end of the manhole box is rotatably and sealingly connected to the manhole cover, a filling mechanism is arranged between the manhole cover and the manhole box, and the filling mechanism is fixedly connected to the manhole cover via an elastic locking mechanism.

[0007] Preferably, the filling mechanism includes filling body one, filling body two and filling body three, filling body one is welded around the outer periphery of the manhole box; filling body two is welded on the inner side of the manhole cover; filling body three is welded on the inner side of the manhole box, and a gap is left between filling body three and filling body two.

[0008] Preferably, the elastic locking mechanism includes a lock sleeve, a lock shaft, an upper handle, a compression spring, a lock tongue and a lower handle. Vertically opposite mounting holes are provided on the manhole cover and the filling body 2. A lock sleeve is inserted into the mounting hole. A lock shaft is passed through the lock sleeve. An upper handle is threadedly sleeved on the upper end of the lock shaft. A compression spring is clamped between the lower end of the upper handle and the lock sleeve. The lower end of the lock shaft is adaptably connected to the lock tongue. One side of the lock tongue is abutted against the lower end of the filling body 3. The lower end of the lock tongue is fixedly connected to the lower handle.

[0009] Preferably, a side of the filling body 2 close to the elastic locking mechanism is provided with a downwardly contracted hypotenuse, the cross section of the filling body 3 is a triangle, and the filling body 3 is arranged parallel to the hypotenuse.

[0010] Preferably, a sealing strip is fitted on the upper end of the manhole box, and the inner side of the manhole cover is pressed onto the sealing strip.

[0011] Preferably, the filling body 1 is made of stainless steel, and an annular cavity is formed inside the filling body 1.

[0012] Preferably, a lower end of the filling body and a lower end of the filling body are on the same horizontal line.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] (1) In the present utility model, a manhole cover is rotatably and sealingly connected to the upper end of the manhole box body. A filling mechanism is provided between the manhole cover and the manhole box body, and the filling mechanism is fixedly connected to the manhole cover through an elastic locking mechanism. The present utility model can achieve full liquid contact, eliminate the oil and gas space, effectively reduce the VOCs emission and potential safety hazards caused by imperfect sealing of accessories of the floating roof, and realize the two-way operation of opening the manhole device through the cooperation of the filling mechanism and the elastic locking mechanism, which greatly facilitates the subsequent daily maintenance of the floating roof and the storage tank.

[0015] (2) In the present utility model, a first filling body is welded around the periphery of the manhole box body; a second filling body is welded to the inner side of the manhole cover; a third filling body is welded to the inner side of the manhole box body, and a gap is left between the third filling body and the second filling body. Since the second filling body needs to rotate and open and close together with the manhole cover, a downward-converging bevel is provided on the side of the second filling body close to the elastic locking mechanism, and the cross-section of the third filling body is triangular, and the third filling body is arranged parallel to the bevel, so that the third filling body fills the space generated at the bevel, and thus the oil and gas space in the manhole box body is completely filled by the cooperation of the first filling body, the second filling body and the third filling body, achieving both full liquid contact and the effect of eliminating the oil and gas space. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a diagram of the use state of the present utility model;

[0017] Figure 2 is a partial structural schematic diagram of the present utility model;

[0018] Figure 3 is a structural schematic diagram of the present utility model when the manhole cover is in the open state;

[0019] Figure 4 is one of the structural schematic diagrams of the common floating box type manhole device in the prior art;

[0020] Figure 5 is another structural schematic diagram of the common floating box type manhole device in the prior art;

[0021] Figure 6 is a structural schematic diagram of the traditional flip-type manhole device in the prior art. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0023] Such as Figures 1 to 3As shown, a fully liquid-contact double-way manhole device for an internal floating roof includes a manhole box body 1, a manhole cover 2, a first filler 3, a second filler 4, a third filler 5, a lock outer sleeve 6, a lock shaft 7, an upper handle 8, a compression spring 9, a lock tongue 10, a lower handle 11, an inclined edge 12, a sealing strip 13, an annular cavity 14, and oil products 15.

[0024] In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0026] As Figures 1 to 3 shown, the upper end of the manhole box body 1 is rotatably and sealingly connected to the manhole cover 2. Specifically, a sealing strip 13 is adaptively attached to the upper end of the manhole box body 1, and the inner side of the manhole cover 2 is pressed on the sealing strip 13. There is no need to frequently replace the manhole sealing strip because there is no shear force when the manhole is opened and closed, effectively improving work efficiency and making the manhole device convenient and fast to operate. A filling mechanism is provided between the manhole cover 2 and the manhole box body 1, and the filling mechanism is fixedly connected to the manhole cover 2 through an elastic locking mechanism. The two-way operation of the manhole device is realized through the cooperation of the filling mechanism and the elastic locking mechanism, which greatly facilitates the subsequent daily maintenance of the floating roof and the storage tank.

[0027] The filling mechanism includes a first filling body 3, a second filling body 4, and a third filling body 5. The first filling body 3 is welded around the outer periphery of the manhole box body 1; the second filling body 4 is welded to the inner side of the manhole cover 2; the third filling body 5 is welded to the inner side of the manhole box body 1, and there is a gap between the third filling body 5 and the second filling body 4. The first filling body 3 is made of stainless steel, and an annular cavity 14 is formed inside the first filling body 3. The lower ends of the first filling body 3 and the second filling body 4 are on the same horizontal line. Specifically, since the second filling body 4 needs to rotate and open / close together with the manhole cover 2, a downward-converging bevel edge 12 is provided on the side of the second filling body 4 close to the elastic locking mechanism. The cross-section of the third filling body 5 is triangular, and the third filling body 5 is arranged parallel to the bevel edge 12, so that the third filling body 5 fills the space generated at the bevel edge 12. In this way, the oil and gas space inside the manhole box body 1 is completely filled by the cooperation of the first filling body 3, the second filling body 4, and the third filling body 5, achieving both full liquid contact and the effect of eliminating the oil and gas space.

[0028] The elastic locking mechanism includes a lock outer sleeve 6, a lock shaft 7, an upper handle 8, a compression spring 9, a lock tongue 10, and a lower handle 11. Installation holes that are vertically opposite are opened on the manhole cover 2 and the second filling body 4, and the lock outer sleeve 6 is inserted into the installation holes. The lock shaft 7 is inserted through the lock outer sleeve 6. An upper handle 8 is sleeved and screwed at the upper end of the lock shaft 7, and a compression spring 9 is clamped between the lower end of the upper handle 8 and the lock outer sleeve 6; the lower end of the lock shaft 7 is adaptively connected to the lock tongue 10, one side of the lock tongue 10 abuts against the lower end of the third filling body 5, and the lower end of the lock tongue 10 is fixedly connected to the lower handle 11.

[0029] Under the pressure of the compression spring 9, a tensile force of about 18 kg (obtained from internal self-test) will be generated on the manhole cover 2 and the second filling body 4. This tensile force will act uniformly on the sealing strip 13 between the manhole cover 2 and the manhole box body 1, generating a compression of about 1 mm on the sealing strip 13, thereby making the entire manhole device form a very good sealing effect.

[0030] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of rights of the present invention. Therefore, modifications, equivalent changes, improvements, etc. made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A fully liquid-contact two-way manhole device for an internal floating roof, characterized in that: It includes a manhole box body (1), a manhole cover (2), a filling mechanism and an elastic locking mechanism. The upper end of the manhole box body (1) is rotatably and sealingly connected with the manhole cover (2). A filling mechanism is arranged between the manhole cover (2) and the manhole box body (1), and the filling mechanism is fixedly connected with the manhole cover (2) through the elastic locking mechanism.

2. The all-liquid-contact two-way manhole device for an internal floating roof according to claim 1, characterized in that: The filling mechanism includes a first filling body (3), a second filling body (4) and a third filling body (5). The first filling body (3) is welded around the outer periphery of the manhole box body (1); the second filling body (4) is welded on the inner side of the manhole cover (2); the third filling body (5) is welded on the inner side of the manhole box body (1), and a gap is left between the third filling body (5) and the second filling body (4).

3. The fully liquid-contact two-way manhole device for an internal floating roof according to claim 2, characterized in that: The elastic locking mechanism includes a lock outer sleeve (6), a lock shaft (7), an upper handle (8), a compression spring (9), a lock tongue (10) and a lower handle (11). Mounting holes that are vertically opposite are opened on the manhole cover (2) and the second filling body (4), and the lock outer sleeve (6) is inserted into the mounting holes. The lock shaft (7) is inserted through the lock outer sleeve (6). The upper end of the lock shaft (7) is threadedly sleeved with the upper handle (8), and a compression spring (9) is clamped between the lower end of the upper handle (8) and the lock outer sleeve (6); the lower end of the lock shaft (7) is adaptively connected with the lock tongue (10), one side of the lock tongue (10) abuts against the lower end of the third filling body (5), and the lower end of the lock tongue (10) is fixedly connected with the lower handle (11).

4. The fully liquid-contact two-way manhole device for internal floating roof according to claim 3, wherein: One side of the second filling body (4) close to the elastic locking mechanism is provided with an inclined edge (12) that converges downward. The cross-section of the third filling body (5) is triangular, and the third filling body (5) is arranged parallel to the inclined edge (12).

5. The all-liquid-contact two-way manhole device for internal floating roof according to claim 4, characterized in that: A sealing strip (13) is adaptively attached to the upper end of the manhole box body (1), and the inner side of the manhole cover (2) is pressed on the sealing strip (13).

6. The all-liquid-contact two-way manhole device for an internal floating roof according to claim 2 or 3, characterized in that: The first filling body (3) is made of stainless steel, and an annular cavity (14) is formed inside the first filling body (3).

7. The full-liquid-contact two-way manhole device for internal floating roof according to claim 6, characterized in that: The lower ends of the first filling body (3) and the second filling body (4) are on the same horizontal line.

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