Multifunctional cold box top manhole structure
By designing a multi-functional cold box top manhole structure, combining angle steel rings, safety nets and folding covers, the problem of low safety of air separation cold box is solved, and the effect of preventing wet air, nitrogen leakage and falling from high places is achieved. Rainy days improve performance.
Patent Information
- Application Number
- CN202421064736.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-16
AI Technical Summary
The existing empty cooling box has low safety problems. The internal pearlescent sand has strong fluidity and a closed nitrogen environment may cause suffocation to personnel, and it is easy to fall from high places and pipeline damage during construction or filling.
A multifunctional cold box top manhole structure is designed, using angle steel ring, left bearing, right bearing, safety net, sealing gasket, manhole cover and fastening bolt combination, combining switchable safety net and sealing The manhole cover has added a mesh safety protection device and can be adjusted to cover the manhole on rainy days, improving performance and safety.
It effectively prevents wet air from entering, nitrogen leakage, personnel falls and pipeline damage, improves the safety and performance of the location of the cold box manhole, ensures thermal insulation effect and energy retention, and is convenient to use on rainy days.
Smart Images
Figure CN222257276U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air separation cold boxes, in particular to a multifunctional cold box top manhole structure. Background Art
[0002] The air separation cold box is a closed tall building structure equipped with low-temperature equipment and pipelines, and filled with pearl sand insulation material. In order to prevent moist air from entering the cold box and causing the pearl sand to become damp and affect the insulation effect, the cold box is also filled with 500-800Pa of nitrogen to maintain a slightly positive pressure environment in the cold box.
[0003] The existing related technologies often have the following defects: the cold box is a tall structure, and its interior is filled with highly fluid pearlescent sand and nitrogen that can suffocate people. If a person accidentally falls from the manhole or the pearlescent sand filling port, the consequences will be disastrous.
[0004] Therefore, the utility model provides a multifunctional cold box top manhole structure. Utility Model Content
[0005] The utility model aims to solve the disadvantage of low safety in the use of cold boxes in the prior art and proposes a multifunctional cold box top manhole structure.
[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a multifunctional cold box top manhole structure, including a cold box, an upper port of the cold box is fixedly installed with an angle steel ring, the inner side of the angle steel ring is fixedly installed with a left support platform and a right support platform, a safety net is installed between the left support platform and the inner side of the angle steel ring, a sealing gasket is installed on the upper surface of the angle steel ring, a manhole cover is placed above the sealing gasket, and fastening bolts are installed inside the manhole cover, the sealing gasket and the angle steel ring.
[0007] The effects achieved by the above components are: when closing the safety net, the safety net is first buckled into the left platform, then pulled to the right, and then buckled into the right platform; when the safety net needs to be opened and removed, first lift the right safety net, and then push it to the left, and the safety net can be removed from the left platform. Under the joint action of the left and right platforms, the safety net can be stable and firm and not easy to fall off, and the switch operation is easy. The structure adopts low-cost ordinary carbon steel materials and has low cost.
[0008] Preferably, two handles are fixedly mounted on the upper surface of the manhole cover.
[0009] The effects achieved by the above components are: the arrangement of the handle facilitates the lifting of the manhole cover.
[0010] Preferably, four support bars in groups of two are fixedly mounted on the upper surface of the cold box, two of the support bars are slidably connected to the inside thereof with guide rods, and guide covers are fixedly mounted on the other ends of the two guide rods, and the guide covers are acrylic covers.
[0011] The effects achieved by the above components are: by setting the above structure, the flexible use of the guide cover is facilitated, the opening and use of the manhole on rainy days is facilitated, and the use performance of the manhole is further improved.
[0012] Preferably, a folding cover is fixedly mounted on the lower surface of the guide cover, and a gravity ring is fixedly mounted on the lower end of the folding cover.
[0013] The effect achieved by the above components is that the gravity ring drives the folding cover to cover the position around the manhole.
[0014] Preferably, a sliding rod is fixedly connected to the side wall of the gravity ring, a positioning block is fixedly connected to the side wall of the guide cover, and the sliding rod is internally slidably connected to the positioning block.
[0015] The effect achieved by the above components is that the sliding rod slides inside the positioning block to limit the guiding direction of the folding cover.
[0016] Preferably, a support frame is fixedly connected to the inner side of the gravity ring, and a plurality of stoppers are fixedly connected to the lower surface of the support frame.
[0017] The effect achieved by the above components is that when a person needs to walk out of the manhole, the safety net can be opened and stuck between the blocks on the support frame, thereby achieving temporary support for the unfolded folding cover.
[0018] Preferably, the inner thread of the support bar is connected with a screw rod, the side wall of the guide rod is evenly provided with a plurality of insertion holes, and the size of the bolt is matched with the size of the insertion hole.
[0019] The effect achieved by the above components is that the screw rod is rotated to be inserted into the inner wall of the corresponding insertion hole on the guide rod, so as to fix the position of the guide rod after movement.
[0020] In summary:
[0021] 1. In the utility model, the structure is airtight to prevent moist air from entering the cold box, causing the pearl sand to become damp and affect the insulation effect, and to prevent nitrogen leakage in the cold box from bringing out the cold in the cold box and causing energy loss. In consideration of the requirements for ventilation and lighting of the cold box during installation and construction, a mesh safety protection device is designed to prevent accidents in which personnel fall from heights during the construction phase, and to prevent accidents such as a whole bag of pearl sand falling and breaking a small pipe in the cold box during the filling process, thereby improving the safety of the use of the manhole position of the cold box to a certain extent.
[0022] 2. In the utility model, when encountering some rainy weather, the gravity ring can be lifted, wherein the guide rod slides inside the support bar to limit the moving direction of the guide cover, and after the guide cover is moved to the position above the manhole, the gravity ring is released, and the gravity ring will drive the folding cover to block the position around the manhole, and the manhole position can be covered at this time. By setting the above structure, the flexible use of the guide cover is facilitated, and the opening and use of the manhole on some rainy days is facilitated, and the performance of the manhole is further improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0024] Figure 2 It is a structural schematic diagram of the manhole cover in the utility model;
[0025] Figure 3 It is a structural schematic diagram of the protective net in the utility model;
[0026] Figure 4 For the utility model Figure 3 A magnified image of point A;
[0027] Figure 5 For the utility model Figure 3 A magnified view of point B;
[0028] Figure 6 This is a schematic diagram of the structure of the angle steel ring in the utility model;
[0029] Figure 7 It is a structural schematic diagram of the folding cover in the utility model;
[0030] Figure 8 For the utility model Figure 7 A schematic diagram of the structure from another angle;
[0031] Fig. 9 For the utility model Figure 7 Enlarged view of point C.
[0032] Legend: 1. Angle steel ring; 2. Sealing gasket; 3. Manhole cover; 4. Handle; 5. Fastening bolts; 6. Left support platform; 7. Right support platform; 8. Safety net; 9. Cold box; 10. Guide cover; 11. Gravity ring; 12. Folding cover; 13. Positioning block; 14. Sliding rod; 15. Support bar; 16. Guide rod; 17. Support frame; 18. Block; 19. Screw; 20. Socket. DETAILED DESCRIPTION
[0033] Reference Figure 1-9As shown, the utility model provides a technical solution: a multifunctional cold box top manhole structure, including a cold box 9.
[0034] The following is a detailed description of its overall specific settings and functions.
[0035] In this embodiment: the upper port of the cold box 9 is fixedly installed with an angle steel ring 1, the inner side of the angle steel ring 1 is fixedly installed with a left support 6 and a right support 7, a safety net 8 is installed between the left support 6 and the inner side of the angle steel ring 1, a sealing gasket 2 is installed on the upper surface of the angle steel ring 1, a manhole cover 3 is placed above the sealing gasket 2, and a fastening bolt 5 is installed inside the manhole cover 3, the sealing gasket 2 and the angle steel ring 1. When closing the safety net 8, the safety net 8 is first buckled into the left support 6, then pulled to the right, and then buckled into the right support 7; when the safety net 8 needs to be opened and removed, the right safety net 8 is first lifted, and then pushed to the left, and the safety net 8 can be removed from the left support 6. Under the joint action of the left support 6 and the right support 7, the safety net 8 can be stable and firm and not easy to fall off, and the switch operation is simple. The structure is made of low-priced ordinary carbon steel materials, and the cost is low. Two handles 4 are fixedly installed on the upper surface of the manhole cover 3. The setting of the handle 4 facilitates the lifting of the manhole cover 3.
[0036] Specifically, four support bars 15 are fixedly installed in groups of two on the upper surface of the cold box 9, and guide rods 16 are slidably connected inside the two support bars 15. The other ends of the two guide rods 16 are fixedly installed with guide covers 10, which are acrylic covers. By setting the above structure, the flexible use of the guide cover 10 is facilitated, and the opening and use of the manhole on some rainy days is facilitated, and the use performance of the manhole is further improved.
[0037] A folding cover 12 is fixedly mounted on the lower surface of the guide cover 10, and a gravity ring 11 is fixedly mounted on the lower end of the folding cover 12. The gravity ring 11 drives the folding cover 12 to cover the position around the manhole. A sliding rod 14 is fixedly connected to the side wall of the gravity ring 11, and a positioning block 13 is fixedly connected to the side wall of the guide cover 10. The sliding rod 14 is slidably connected to the inside of the positioning block 13. The sliding of the sliding rod 14 inside the positioning block 13 plays a role in limiting the guiding direction of the folding cover 12.
[0038] The inner side of the gravity ring 11 is fixedly connected with a support frame 17, and the lower surface of the support frame 17 is fixedly connected with a plurality of blocks 18. When a person needs to walk out of the manhole, the safety net 8 can be opened and stuck between the blocks 18 on the support frame 17, so as to achieve temporary support for the unfolded folding cover 12. The inner thread of the support bar 15 is connected with a screw rod 19, and the side wall of the guide rod 16 is evenly provided with a plurality of insertion holes 20, and the size of the bolts matches the size of the insertion holes 20. The screw rod 19 is rotated and inserted into the inner wall of the corresponding insertion hole 20 on the guide rod 16, so as to achieve the fixing of the position of the guide rod 16 after the movement.
[0039] Working principle: the structure adopts a switchable safety net 8 and a sealed manhole cover 3. The safety net 8 is a self-tightening structure. It is stable and firm in the closed state without the risk of falling off. The opening method is simple and easy to use. The manhole cover 3 and the cold box 9 are welded and connected by an angle steel ring 1. A sealing gasket 2 is arranged between the manhole cover 3 and the angle steel ring 1. They are connected by fastening bolts 5, which are convenient for disassembly and have high sealing performance. The setting of the handle 4 facilitates the lifting of the manhole cover 3. When closing the safety net 8, the safety net 8 is first buckled into the left support platform 6, then pulled to the right, and then buckled into the right support platform 7; when the safety net 8 needs to be opened and removed, the right safety net 8 is first lifted, and then pushed to the left, so that the safety net 8 can be removed from the left support platform 6, and the left support platform 6 and Under the joint action of the right support 7, the safety net 8 can be stable and firm and not easy to fall off, and the switch operation is simple. The structure adopts low-cost ordinary carbon steel materials, and the cost is low. The structure is airtight to prevent moist air from entering the cold box 9 and causing the pearl sand to get damp and affect the insulation effect, and to prevent nitrogen leakage in the cold box 9 from bringing out the cold in the cold box 9 and causing energy loss. Considering the ventilation and lighting requirements of the cold box 9 during the installation and construction of the cold box 9, a mesh safety protection device is designed to prevent accidents of personnel falling from heights during the construction stage, and to prevent accidents such as a whole bag of pearl sand falling and breaking a small pipe in the cold box 9 during the filling process of pearl sand, which improves the safety of the use of the manhole position of the cold box 9 to a certain extent.
[0040] When encountering some rainy weather, the gravity ring 11 can be lifted, wherein the guide rod 16 slides inside the support bar 15 to limit the moving direction of the guide cover 10. After the guide cover 10 is moved to the position above the manhole, the gravity ring 11 is loosened, and the gravity ring 11 will drive the folding cover 12 to cover the position around the manhole. At this time, the manhole position can be covered, and the rainwater will be guided around along the guide cover 10, thereby avoiding the situation where rainwater pours into the cold box 9. After moving the guide rod 16 to a suitable position, the screw 19 is rotated to insert the inner wall of the corresponding socket 20 on the guide rod 16, so as to realize the fixing of the position of the guide rod 16 after movement. , which improves the stability of using the guide cover 10 after the moving rod, and the guide cover 10 made of acrylic cover material will still allow sunlight to enter the inside of the cold box 9, wherein the sliding rod 14 slides inside the positioning block 13 to limit the guiding direction of the folding cover 12. When personnel need to walk out of the manhole, the safety net 8 can be opened and stuck between the blocks 18 on the support frame 17, so as to achieve temporary support for the unfolded folding cover 12, which facilitates the climbing out of the manhole. By setting the above structure, the flexible use of the guide cover 10 is facilitated, and the opening and use of the manhole on some rainy days is facilitated, which further improves the performance of the manhole.
[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.
Claims
1. A multifunctional cold box top manhole structure, comprising a cold box (9), characterized in that: An angle steel ring (1) is fixedly installed at the upper port of the cold box (9), a left support platform (6) and a right support platform (7) are fixedly installed on the inner side of the angle steel ring (1), a safety net (8) is installed between the left support platform (6) and the inner side of the angle steel ring (1), a sealing gasket (2) is installed on the upper surface of the angle steel ring (1), a manhole cover (3) is placed above the sealing gasket (2), and fastening bolts (5) are installed inside the manhole cover (3), the sealing gasket (2) and the angle steel ring (1).
2. The multifunctional cold box top manhole structure according to claim 1, characterized in that: Two handles (4) are fixedly mounted on the upper surface of the manhole cover (3).
3. The multifunctional cold box top manhole structure according to claim 1, characterized in that: Four support bars (15) are fixedly mounted on the upper surface of the cold box (9) in groups of two, and guide rods (16) are slidably connected inside two of the support bars (15). Guide covers (10) are fixedly mounted on the other ends of the two guide rods (16), and the guide covers (10) are acrylic covers.
4. The multifunctional cold box top manhole structure according to claim 3, characterized in that: A folding cover (12) is fixedly mounted on the lower surface of the guide cover (10), and a gravity ring (11) is fixedly mounted on the lower end of the folding cover (12).
5. The multifunctional cold box top manhole structure according to claim 4, characterized in that: The side wall of the gravity ring (11) is fixedly connected with a slide bar (14), the side wall of the guide cover (10) is fixedly connected with a positioning block (13), and the slide bar (14) and the positioning block (13) are internally slidably connected.
6. The multifunctional cold box top manhole structure according to claim 4, characterized in that: A support frame (17) is fixedly connected to the inner side of the gravity ring (11), and a plurality of stoppers (18) are fixedly connected to the lower surface of the support frame (17).
7. The multifunctional cold box top manhole structure according to claim 3 is characterized by: The inner thread of the support bar (15) is connected with a screw rod (19), and the side wall of the guide rod (16) is evenly provided with a plurality of insertion holes (20), and the size of the bolt is matched with the size of the insertion holes (20).