Light and reliable quick-opening type buoyancy chamber manhole cover

Abstract

The utility model relates to the technical field of petroleum storage and transportation, in particular to a light and reliable quick-open type buoyancy chamber manhole cover which comprises a buoyancy chamber wall, the buoyancy chamber wall is cylindrical, a buoyancy chamber cover is arranged at a top opening of the buoyancy chamber wall, the buoyancy chamber wall and the buoyancy chamber cover are rotationally connected through a rotating hinge, and the rotating hinge is arranged in the vertical direction. A limiting device is installed on the side wall of the buoyancy chamber wall and located on the opposite side of the rotating hinge. A rotating handle is arranged at the top of the floating cabin cover, a limiting sliding block is connected to the bottom of the floating cabin cover, and the limiting sliding block and the limiting device can be locked and separated. The device has the beneficial effects that the cover can be rotationally opened and closed through one-hand operation, the time and difficulty required for opening and closing the cover are reduced, and the inspection and maintenance efficiency of the storage tank is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of petroleum storage and transportation, in particular to a light and reliable quick-opening floating tank manhole cover. Background Art

[0002] In the oil storage and transportation industry, the double-disc external floating roof storage tank is a floating chamber type. The floating chamber is separated by multiple partitions and has greater rigidity. The middle air layer acts as a heat insulator, which can reduce the heat radiation of the floating roof and reduce the evaporation loss of oil products. The floating chamber manhole is set to facilitate operators to enter the floating chamber for maintenance or to check for leaks.

[0003] At present, the manhole of the floating cabin is opened and closed by cooperating with the pillars on the floating cabin wall and the openings on the floating cabin cover. When opening the manhole cover of the floating cabin, it is necessary to hold the handle with both hands and twist the floating cabin cover. The floating cabin cover can be lifted up and moved to the surrounding open space for placement only after the opening of the floating cabin cover is separated from the pillars.

[0004] However, because the steel floating cover is heavy and cumbersome to operate, it often increases the difficulty of tank inspection for workers, reduces work efficiency, and in severe cases, causes workers to sprain their waists when lifting the floating cover. In addition, as time goes by and due to human impact, the opening or support of the floating cover will be deformed, resulting in a jam between the opening of the floating cover and the support, which greatly increases the difficulty of opening the cover, which is time-consuming and laborious. Utility Model Content

[0005] In order to solve the technical problems that traditional floating tank covers are heavy and complicated to operate, the utility model provides a light and reliable quick-opening floating tank manhole cover.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A lightweight and reliable quick-opening floating cabin manhole cover comprises a floating cabin wall, which is cylindrical. A floating cabin cover is arranged at the top opening of the floating cabin wall. The floating cabin wall and the floating cabin cover are rotatably connected by a rotating hinge, the rotating hinge is arranged in a vertical direction, a limiting device is installed on the side wall of the floating cabin wall, and the limiting device is located on the opposite side of the rotating hinge; a rotating handle is arranged on the top of the floating cabin cover, and a limiting slider is connected to the bottom of the floating cabin cover, and the limiting slider can be locked and separated from the limiting device.

[0008] With the above structure, when the floating tank cover needs to be opened, the limit slider is separated from the limit device, so that the floating tank cover is free from the limit device. At this time, the floating tank cover can be rotated relative to the floating tank cover around the rotating hinge and the floating tank wall by grasping the rotating handle with one hand, so that the floating tank cover can be rotated and opened with one hand, which reduces the time and difficulty of opening the cover and improves the inspection and maintenance efficiency of the storage tank. When the floating tank cover needs to be closed, the floating tank cover can be rotated back to its original position by grasping the rotating handle with one hand, so that the limit slider is aligned with the limit device, and the limit slider and the limit device can be locked to close the floating tank cover.

[0009] As a preferred implementation method of a lightweight and reliable quick-opening floating cabin manhole cover, the rotating hinge includes a hinge cup, which is connected to the outer wall of the floating cabin wall. The hinge cup is a vertical cylindrical structure. A rotating shaft is sleeved in the hinge cup, and the rotating shaft can rotate in the hinge cup. The top of the rotating shaft is connected to the bottom of the floating cabin cover, and a vertical limit pin is inserted into the bottom end of the rotating shaft. The length of the rotating shaft is greater than the hinge cup, and the rotating shaft can slide in the hinge cup along the vertical direction.

[0010] With the above structural manner, the rotating shaft can rotate in the hinge cup and can also be lifted and lowered along the axial direction of the hinge cup, so that the floating cabin cover can be rotated and lifted and lowered.

[0011] As a preferred implementation method of a lightweight and reliable quick-opening floating cabin manhole cover, the limiting device includes a guide plate and a limiting plate, the guide plate is connected to the floating cabin wall, the limiting plate is located on the side of the guide plate away from the floating cabin wall, the guide plate is provided with a guiding arc groove, and the limiting slider can enter and slide out of the guiding arc groove along the circumferential direction of the floating cabin wall; the limiting plate is provided with a limiting opening that can be engaged with the limiting slider, the limiting opening corresponds to the position of the guiding arc groove, and the limiting slider and the limiting opening can be engaged and separated in the radial direction of the limiting slider.

[0012] With the above structure, when opening the cover, firstly, the limit slider is relatively separated from the limit opening, so that the limit slider is free from the limit opening, that is, the floating cabin cover is free from the limit of the limit device, and then the floating cabin cover is rotated, and the limit slider can slide out of the guide arc groove along the circumferential direction of the floating cabin wall. At this time, the floating cabin cover will rise while rotating until the limit slider leaves the guide plate, and the floating cabin cover will drop to abut against the upper end of the floating cabin wall. The floating cabin cover can be opened by continuing to rotate. When the floating cabin cover needs to be closed, the floating cabin cover is rotated to make the limit slider enter the guide arc groove, and then the limit slider and the limit opening are engaged with each other to limit the movement of the floating cabin cover and the floating cabin wall in the circumferential direction.

[0013] As a preferred implementation of a lightweight and reliable quick-opening floating cabin manhole cover, the limiting sliding block is provided with a groove or a protrusion on the side wall of the floating cabin wall in the circumferential direction.

[0014] By adopting the above-mentioned structural mode, the floating cabin cover is restricted from moving in the vertical direction when it is closed.

[0015] As a preferred implementation of a lightweight and reliable quick-opening floating cabin manhole cover, the guide plate is connected to a connecting plate on the side wall in the circumferential direction of the floating cabin wall, and the limit plate is slidably connected to the connecting plate in the radial direction of the limit slider.

[0016] By adopting the above structural manner, the limit plate can be engaged with and separated from the limit slider by sliding, which is convenient and quick.

[0017] As a preferred implementation of a lightweight and reliable quick-opening floating cabin manhole cover, an unlocking handle is connected to a side of the limiting plate away from the guide plate.

[0018] With the above structural manner, the limit plate can be slid by pulling the unlocking handle, which is convenient and quick.

[0019] As a preferred implementation method of a lightweight and reliable quick-opening floating cabin manhole cover, the side wall of the limit plate is vertically protruded with a sliding pin, the connecting plate has a sliding opening, the sliding pin passes through the sliding opening, and the sliding pin can slide in the sliding opening along the radial direction of the limit slider.

[0020] With the above structural manner, the sliding structure is simple and reliable, and the sliding opening can guide the sliding pin and limit the sliding displacement of the sliding pin to prevent the sliding pin from escaping from the sliding opening.

[0021] As a preferred implementation of a lightweight and reliable quick-opening floating cabin manhole cover, a positioning pin protrudes from the side wall of the guide plate, and the positioning pin passes through the connecting plate; the positioning pin and the sliding pin are connected by a spring.

[0022] With the above structural manner, the spring plays a resetting role, so that the limit plate can automatically reset in the direction of the guide plate.

[0023] As a preferred implementation of a lightweight and reliable quick-opening floating cabin manhole cover, the edge of the floating cabin cover is surrounded by guide vanes, which extend downward along the side walls of the floating cabin cover.

[0024] With the above structure, when it rains, raindrops will fall along the guide vanes, and the guide vanes can prevent rainwater from flowing along the lower surface of the buoyancy cover into the buoyancy wall.

[0025] As a preferred implementation of a lightweight and reliable quick-opening floating cabin manhole cover, guide blocks are provided on the outer periphery of the floating cabin wall.

[0026] With the above structural manner, the guide block can make the rotation of the floating cabin cover smoother.

[0027] The beneficial effects of the utility model include:

[0028] When the floating tank cover needs to be opened, the limit slider is separated from the limit device, so that the floating tank cover is free from the limit device. At this time, the floating tank cover can be rotated relative to the floating tank cover around the rotating hinge and the floating tank wall by one hand, so that the floating tank cover can be rotated and opened by one hand, which reduces the time and difficulty required for opening the cover and improves the efficiency of tank inspection and maintenance. When the floating tank cover needs to be closed, the floating tank cover can be rotated back to its original position by one hand, so that the limit slider is aligned with the limit device, and the limit slider and the limit device are locked to close the floating tank cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a right view structural schematic diagram of a lightweight and reliable quick-opening floating cabin manhole cover in a closed state in a specific implementation mode of the utility model;

[0031] Figure 2 It is a schematic diagram of the main structure of a lightweight and reliable quick-opening floating cabin manhole cover in an open state in a specific implementation mode of the utility model;

[0032] Figure 3 It is a three-dimensional structural schematic diagram of a light and reliable fast-opening floating cabin manhole cover in a specific implementation mode of the utility model in a locked state of the limiting device;

[0033] Figure 4 It is a three-dimensional structural schematic diagram of a connecting plate of a light and reliable quick-opening floating cabin manhole cover in a specific implementation mode of the utility model;

[0034] Figure 5 The present invention is a schematic diagram of the side structure of a rotating hinge in a light and reliable quick-opening floating cabin manhole cover in a specific implementation manner of the utility model.

[0035] List of parts and reference numerals:

[0036] 1. Floating cabin wall; 2. Rotating hinge; 3. Floating cabin cover; 4. Rotating handle; 5. Limit device; 6. Guide block; 7. Guide plate; 201. Hinge cup; 202. Rotating shaft; 203. Limit pin; 501. Sliding pin; 502. Fixing screw; 503. Connecting plate; 504. Positioning pin; 505. Spring; 506. Limit slider; 507. Guide plate; 508. Limit plate; 509. Unlocking handle; 5010. Limit key; 5011. Lock key. DETAILED DESCRIPTION

[0037] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme in the utility model will be clearly and completely described below in conjunction with the drawings in the specific embodiments. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0038] Reference Figure 1-5The present embodiment provides a light and reliable quick-opening floating cabin manhole cover, including a floating cabin wall 1, which is cylindrical, and a guide block 6 is provided on the outer periphery of the floating cabin wall 1. A floating cabin cover 3 is provided at the top opening of the floating cabin wall 1, and a guide plate 7 is surrounded by the edge of the floating cabin cover 3. The guide plate 7 extends downward along the side wall of the floating cabin cover 3, and the floating cabin wall 1 and the floating cabin cover 3 are rotatably connected by a rotating hinge 2.

[0039] The rotating hinge 2 is arranged along the vertical direction, and the rotating hinge 2 includes a hinge cup 201, which is connected to the outer wall of the floating cabin wall 1. The hinge cup 201 is a vertical cylindrical structure. A rotating shaft 202 is sleeved in the hinge cup 201, and the rotating shaft 202 can rotate in the hinge cup 201. The top of the rotating shaft 202 is connected to the bottom of the floating cabin cover 3, and a vertical limit pin 203 is inserted at the bottom of the rotating shaft 202. The length of the rotating shaft 202 is greater than the hinge cup 201, and the rotating shaft 202 can slide in the hinge cup 201 along the vertical direction.

[0040] A limiting device 5 is installed on the outer peripheral surface of the floating cabin wall 1, and the limiting device 5 is located on the opposite side of the rotating hinge 2; a rotating handle 4 is provided on the top of the floating cabin cover 3, and a limiting slider 506 is connected to the bottom of the floating cabin cover 3. The rotating handle 4 and the limiting slider 506 are located on the same radius of the floating cabin wall 1, and the limiting slider 506 can be locked and separated from the limiting device 5.

[0041] The limiting device 5 includes a guide plate 507 and a limiting plate 508, wherein the guide plate 507 is connected to the floating cabin wall 1, the limiting plate 508 is located on the side of the guide plate 507 away from the floating cabin wall 1, the side wall of the guide plate 507 in the circumferential direction of the floating cabin wall 1 is connected to the connecting plate 503, and the side of the limiting plate 508 away from the guide plate 507 is connected to the unlocking handle 509. The guide plate 507 is provided with a guide arc groove, and the limiting slider 506 can enter and slide out of the guide arc groove along the circumferential direction of the floating cabin wall 1. The limiting plate 508 is provided with a limiting opening that can be engaged with the limiting slider 506. The limiting opening corresponds to the position of the guiding arc groove. The limiting slider 506 is provided with a groove on the side wall in the circumferential direction of the floating cabin wall 1. The limiting opening is provided with a protruding limiting key 5010 on the hole wall in the circumferential direction of the floating cabin wall 1. The limiting key 5010 can be engaged with the groove on the limiting slider 506. The limiting slider 506 and the limiting opening can slide relative to each other in the radial direction of the limiting slider 506 so as to be engaged and separated. The side wall of the limiting plate 508 is provided with a sliding pin 501 protruding vertically. The connecting plate is provided with a sliding opening. The sliding pin 501 passes through the sliding opening. The sliding pin 501 can slide in the sliding opening along the radial direction of the limiting slider 506, so that the limiting plate 508 and the connecting plate 503 slide in the radial direction of the limiting slider 506. The sliding opening is provided with a locking key 5011, and the outer peripheral surface of the sliding pin 501 is provided with a structure that can be elastically engaged with the locking key 5011. The side wall of the guide plate 507 protrudes with a positioning pin 504, which passes through the connecting plate 503; the positioning pin 504 and the sliding pin 501 are connected by a spring 505.

[0042] The working principle of this embodiment is:

[0043] When the floating cabin cover 3 needs to be opened, the unlocking handle 509 is pulled to draw out the limit plate 508, and the displacement of the sliding pin 501 is elastically limited by the locking key 5011 to keep the limit plate 508 in the unlocked state. At this time, the limit opening is separated from the limit slider 506, and the limit slider 506 is free from the restriction of the limit plate 508. The rotating handle 4 is turned to drive the floating cabin cover 3 to rotate. At the same time, the floating cabin cover 3 will be lifted under the action of the guide arc groove. When the floating cabin cover 3 is lifted to the point where the lower surface of the guide plate 7 is flush with the upper end surface of the floating cabin wall 1, the limit pin 203 of the rotating hinge 2 will limit the lifting of the floating cabin cover 3, and the guide plate 7 will no longer block the rotation of the floating cabin cover 3. The floating cabin cover 3 can be opened to the required opening by continuing to rotate the floating cabin cover 3 under the guidance of the guide block 6.

[0044] When it is necessary to close the floating cabin cover 3, turn the rotating handle to rotate the floating cabin cover 3 until the limit slider 506 contacts the guide plate 507. When the limit slider 506 is aligned with the guide arc groove, the floating cabin cover 3 will fall back to the starting position under the action of gravity. Gently push the unlocking handle 509 to push the sliding pin 501 away from the locking key 5011. The limit plate 508 automatically returns to its position under the resetting action of the spring 505. The limit opening is re-engaged with the limit slider 506. The limit slider 508 is restricted in both the circumferential direction and the vertical direction of the floating cabin wall 1, thereby closing and locking the floating cabin cover 3.

[0045] In other embodiments, the limiting slider 506 is provided with a protrusion on the side wall in the circumferential direction of the floating cabin wall 1, and the limiting opening is provided with a groove that can be correspondingly engaged with the protrusion on the hole wall in the circumferential direction of the floating cabin wall 1.

[0046] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lightweight and reliable quick-opening floating cabin manhole cover, comprising a floating cabin wall (1), the floating cabin wall (1) is cylindrical, and a floating cabin cover (3) is provided at the top opening of the floating cabin wall (1), characterized in that: The floating cabin wall (1) and the floating cabin cover (3) are rotatably connected via a rotating hinge (2), the rotating hinge (2) is arranged in a vertical direction, a limiting device (5) is installed on the side wall of the floating cabin wall (1), and the limiting device (5) is located on the opposite side of the rotating hinge (2); a rotating handle (4) is arranged on the top of the floating cabin cover (3), and a limiting slider (506) is connected to the bottom of the floating cabin cover (3), and the limiting slider (506) can be locked and separated from the limiting device (5).

2. A lightweight and reliable quick-opening floating manhole cover according to claim 1, characterized in that: The rotary hinge (2) comprises a hinge cup (201), the hinge cup (201) is connected to the outer wall of the floating cabin wall (1), the hinge cup (201) is a vertical cylindrical structure, a rotating shaft (202) is sleeved in the hinge cup (201), the rotating shaft (202) can rotate in the hinge cup (201), the top end of the rotating shaft (202) is connected to the bottom of the floating cabin cover (3), a vertical limit pin (203) is inserted into the bottom end of the rotating shaft (202), the length of the rotating shaft (202) is greater than the hinge cup (201), and the rotating shaft (202) can slide in the hinge cup (201) along the vertical direction.

3. A lightweight and reliable quick-opening floating manhole cover according to claim 2, characterized in that: The limiting device (5) comprises a guide plate (507) and a limiting plate (508); the guide plate (507) is connected to the floating cabin wall (1); the limiting plate (508) is located on a side of the guide plate (507) away from the floating cabin wall (1); the guide plate (507) is provided with a guiding arc groove; the limiting slider (506) can enter and slide out of the guiding arc groove along the circumferential direction of the floating cabin wall (1); the limiting plate (508) is provided with a limiting opening that can be engaged with the limiting slider (506); the limiting opening corresponds to the position of the guiding arc groove; the limiting slider (506) and the limiting opening can be engaged with and separated from each other in the radial direction of the limiting slider (506).

4. A lightweight and reliable quick-opening floating manhole cover according to claim 3, characterized in that: The limiting sliding block (506) is provided with a groove or a protrusion on the side wall in the circumferential direction of the floating cabin wall (1).

5. A lightweight and reliable quick-opening floating manhole cover according to claim 3, characterized in that: The guide plate (507) is connected to a connecting plate (503) on the side wall in the circumferential direction of the floating cabin wall (1), and the limiting plate (508) is slidably connected to the connecting plate (503) in the radial direction where the limiting slider (506) is located.

6. A lightweight and reliable quick-opening floating manhole cover according to claim 5, characterized in that: A unlocking handle (509) is connected to a side of the limiting plate (508) away from the guide plate (507).

7. A lightweight and reliable quick-opening floating manhole cover according to claim 5, characterized in that: A sliding pin (501) is vertically protruded from the side wall of the limiting plate (508), and a sliding opening is opened on the connecting plate. The sliding pin (501) passes through the sliding opening, and the sliding pin (501) can slide in the sliding opening along the radial direction of the limiting slider (506).

8. A lightweight and reliable quick-opening floating manhole cover according to claim 7, characterized in that: A positioning pin (504) protrudes from the side wall of the guide plate (507), and the positioning pin (504) passes through the connecting plate (503); the positioning pin (504) and the sliding pin (501) are connected via a spring (505).

9. A lightweight and reliable quick-opening floating manhole cover according to claim 2, characterized in that: The edge of the floating cabin cover (3) is surrounded by a guide plate (7), and the guide plate (7) extends downward along the side wall of the floating cabin cover (3).

10. A lightweight and reliable quick-opening floating manhole cover according to claim 1, characterized in that: A guide block (6) is provided on the outer periphery of the floating bulkhead (1).

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