Ethylene storage tank capable of improving precooling efficiency

Abstract

The ethylene storage tank capable of improving the precooling efficiency comprises a plurality of low-temperature spherical tanks, a ladder stand frame is arranged outside the low-temperature spherical tanks, a manned moving mechanism is fixedly connected to the top of the ladder stand frame, a discharging pipe is arranged at the bottom of each low-temperature spherical tank, and the manned moving mechanism comprises two vertical frames. The top of each vertical frame is fixedly connected with a guide rail, the top of each guide rail is fixedly connected with a fixing seat, and each fixing seat is fixedly connected with a guide rod. According to the ethylene storage tank capable of improving the pre-cooling efficiency, climbing is conducted through the ladder stand frame, a worker enters the manned hanging basket, the driving motor drives the worker to move among the multiple low-temperature spherical tanks, overhauling is convenient, the overhauling efficiency is improved, the low-temperature spherical tanks are connected with the ethylene separation device through the discharging pipe, gas-phase ethylene is subjected to recycling, and the recycling efficiency is improved. Discharge is avoided, the purpose of precooling the storage tank is achieved, and the precooling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ethylene storage tanks, in particular to an ethylene storage tank with improved pre-cooling efficiency. Background Art

[0002] The ethylene tank is a low-temperature spherical tank. When the ethylene storage tank is first put into use or put into use for the first time after maintenance, it needs to be gas-phase pre-cooling and liquid-phase pre-cooling. The pre-cooling temperature cannot exceed 5℃ / h at most, and it must eventually be reduced to -34℃ before ethylene can be normally introduced. The original design of the ethylene tank gas-phase pre-cooling process in the olefin tank area is that the gas-phase ethylene enters the pre-cooling tank. After the pressure reaches equilibrium with other storage tanks, the gas-phase ethylene in the pre-cooling tank is discharged into the flare pipe network. It takes about 5 replacements to achieve the purpose of gas-phase pre-cooling. In the existing technology, the staff needs to use the ladder on the ethylene tank to climb to the top of the tank body. When repairing multiple tank bodies, multiple climbs are required, which makes the repair efficiency less than ideal. In addition, gas-phase pre-cooling will waste a lot of ethylene, and the pre-cooling efficiency is less than ideal.

[0003] For example, patent publication number CN214567917U is specifically a double-layer spherical tank. The double-layer spherical tank includes an outer spherical tank, an inner spherical tank located in the outer spherical tank, and a support member supported between the inner spherical tank and the outer spherical tank. There is a gap between the inner spherical tank and the outer spherical tank to form a sandwich space; the center of the inner spherical tank is higher than the center of the outer spherical tank; the support member is located in the sandwich space; the support member includes a plurality of slings arranged at intervals along the circumference of the inner spherical tank, the top end of each sling is connected to the inner circumferential wall of the outer spherical tank, and the bottom end is connected to the outer circumferential wall of the inner spherical tank. The double-layer spherical tank is formed by setting the center of the inner spherical tank higher than the center of the outer spherical tank, that is, an eccentric structure, so that the bottom of the inner spherical tank is aligned with the bottom of the outer spherical tank. The bottom interlayer space between them is larger, which is convenient for the installation of pipelines located in the bottom interlayer space and meets the gas sealing requirements of the liquid phase pipeline. Compared with the relevant technology, the double-layer spherical tank in this embodiment does not increase the volume of the outer spherical tank. Therefore, the material used in the outer spherical tank is reduced, thereby saving costs. However, there is a problem that the staff need to use the ladder on the ethylene tank to climb to the top of the tank body, and multiple climbs are required when inspecting multiple tank bodies, making the inspection efficiency less than ideal, and gas phase pre-cooling will waste a lot of ethylene, and the pre-cooling efficiency is less than ideal. Utility Model Content

[0004] In response to the deficiencies in the prior art, the utility model provides an ethylene storage tank with improved pre-cooling efficiency, which solves the problem that workers need to use the ladder on the ethylene tank to climb to the top of the tank body, and need to climb multiple times when inspecting multiple tanks, resulting in unsatisfactory inspection efficiency, and that gas phase pre-cooling will waste a large amount of ethylene, resulting in unsatisfactory pre-cooling efficiency.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an ethylene storage tank with improved pre-cooling efficiency, comprising a plurality of cryogenic spherical tanks, a plurality of cryogenic spherical tanks having ladder racks provided on the outside, a manned moving mechanism fixedly connected to the top of the ladder rack, and a discharge pipe provided at the bottom of each cryogenic spherical tank;

[0006] The manned moving mechanism includes two upright frames, the tops of the two upright frames are fixedly connected to guide rails, the top of each guide rail is fixedly connected to a fixed seat, the fixed seat is fixedly connected to a guide rod, the two guide rods are slidably connected to the guide seat, a manned hanging basket is fixedly connected between the two pairs of guide seats, the interior of the manned hanging basket is fixedly connected to a handrail, the interior of the two guide rails are provided with guide tooth grooves, both sides of the manned hanging basket are fixedly connected to a driving seat, the interior of the driving seat is rotatably connected to a driving gear, the end of the driving gear is fixedly connected to a driving motor, an electric push rod is provided on one side of the driving gear, and the output shaft end of the electric push rod is fixedly connected to a locking gear block.

[0007] Preferably, the two uprights are fixedly mounted on both sides of the top of the ladder frame, and the two guide rails are symmetrically arranged on the two uprights, so that the two guide rails can guide the movement of the manned hanging basket.

[0008] Preferably, the driving seat is detachably connected to the manned hanging basket by bolts, and the driving seat is arranged inside the guide tooth groove, so that the driving seat can move inside the guide tooth groove.

[0009] Preferably, the driving motor is configured as a reduction motor, and the end of the output shaft of the driving motor is connected to the driving gear, so that the driving motor can drive the driving gear to rotate.

[0010] Preferably, the bottom portion of the driving gear passes through the driving seat, and the driving gear is engaged with the guide tooth groove, so that the driving gear can roll along the guide tooth groove when rotating.

[0011] Preferably, the electric push rod is fixedly mounted on the driving seat, and the locking tooth block matches the driving gear, so that the locking tooth block can lock the driving gear, thereby improving stability when stopping.

[0012] Preferably, the discharge pipe includes a discharge main pipe, which is connected to the bottom of the cryogenic spherical tank. Two branch pipes are fixedly connected to the bottom of the discharge main pipe, and the ends of the two branch pipes are fixedly connected to mounting flanges. Switch valves are installed on the two branch pipes, which can connect the cryogenic spherical tank to the ethylene separation device, so that the gaseous phase ethylene can be recycled when the ethylene gas phase is precooled, thereby avoiding the emission of gaseous phase ethylene and improving the precooling efficiency.

[0013] The utility model provides an ethylene storage tank with improved pre-cooling efficiency. Compared with the prior art, it has the following beneficial effects:

[0014] 1. The ethylene storage tank with improved pre-cooling efficiency is climbed by a ladder. The staff enters the manned hanging basket, and the driving motor drives the driving gear to rotate. The driving gear rotates and rolls on the guide tooth groove. The driving gear rolling drives the driving seat to move. The movement of the driving seat drives the manned hanging basket to move, and drives the staff to move between the tops of multiple low-temperature spherical tanks, which is convenient for maintenance and improves maintenance efficiency.

[0015] 2. The ethylene storage tank with improved pre-cooling efficiency connects the low-temperature spherical tank with the ethylene separation device by installing a flange, so that one branch pipe is connected to the discharge main pipe and the other branch pipe is used for discharge. Therefore, when the ethylene gas phase is pre-cooled, the gaseous phase ethylene is recycled, thereby avoiding the emission of the gaseous phase ethylene and improving the pre-cooling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic structural diagram of the manned mobile mechanism of the present utility model;

[0018] Figure 3 This is a schematic diagram of the drive seat structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the discharge pipe structure of the present utility model.

[0020] In the figure: 1. Cryogenic spherical tank; 2. Manned moving mechanism; 201. Stand; 202. Guide rail; 203. Fixed seat; 204. Guide rod; 205. Guide seat; 206. Manned hanging basket; 207. Handrail; 208. Guide tooth groove; 209. Drive seat; 210. Drive gear; 211. Drive motor; 212. Electric push rod; 213. Locking gear block; 3. Ladder frame; 4. Discharge pipe; 401. Discharge main pipe; 402. Branch pipe; 403. Mounting flange; 404. Switch valve. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-3The utility model provides a technical solution: an ethylene storage tank with improved pre-cooling efficiency, comprising a plurality of cryogenic spherical tanks 1, a ladder frame 3 being provided on the outside of the plurality of cryogenic spherical tanks 1, a manned mobile mechanism 2 being fixedly connected to the top of the ladder frame 3, a discharge pipe 4 being provided at the bottom of each cryogenic spherical tank 1, which can be climbed up through the ladder frame 3, and then the manned mobile mechanism 2 is entered, and the manned mobile mechanism 2 is used to move between the tops of the plurality of cryogenic spherical tanks 1, which is convenient for maintenance and improves maintenance efficiency, and the discharge pipe 4 is used to connect the cryogenic spherical tank 1 to the ethylene separation device, so that when the ethylene gas phase is pre-cooled, the gaseous phase ethylene is recycled, thereby avoiding the emission of the gaseous phase ethylene, achieving the purpose of pre-cooling the storage tank, and improving the pre-cooling efficiency.

[0023] The manned mobile mechanism 2 includes two uprights 201, the tops of the two uprights 201 are fixedly connected to guide rails 202, the tops of each guide rail 202 are fixedly connected to a fixed seat 203, the fixed seat 203 is fixedly connected to a guide rod 204, the two guide rods 204 are slidably connected to a guide seat 205, and a manned hanging basket 206 is fixedly connected between the two pairs of guide seats 205, which can guide the movement of the manned hanging basket 206. The two uprights 201 are fixedly installed on both sides of the top of the ladder frame 3, and the two The guide rails 202 are symmetrically arranged on the two upright frames 201, so that the two guide rails 202 can guide the movement of the manned hanging basket 206. The manned hanging basket 206 is fixedly connected with a handrail 207, which can facilitate the staff to hold it by hand during the movement and improve safety. The two guide rails 202 are provided with guide grooves 208 inside. The manned hanging basket 206 is fixedly connected to a drive seat 209 on both sides. The drive seat 209 is detachably connected to the manned hanging basket 206 by bolts, and the drive seat 209 is arranged on The interior of the guide tooth groove 208 allows the driving seat 209 to move inside the guide tooth groove 208. The driving seat 209 is rotatably connected to a driving gear 210. The bottom part of the driving gear 210 passes through the driving seat 209. The driving gear 210 is meshed with the guide tooth groove 208, so that the driving gear 210 can roll along the guide tooth groove 208 when rotating. The end of the driving gear 210 is fixedly connected to a driving motor 211. The driving motor 211 is configured as a reduction motor, which can effectively reduce speed, and the output shaft end of the driving motor 211 is connected to the driving gear 210, so that the driving motor 211 can drive the driving gear 210 to rotate. An electric push rod 212 is provided on one side of the driving gear 210, and the output shaft end of the electric push rod 212 is fixedly connected to a locking tooth block 213. The electric push rod 212 is fixedly mounted on the driving seat 209. The locking tooth block 213 matches the driving gear 210, so that the locking tooth block 213 can lock the driving gear 210, thereby improving stability when stopping.

[0024] See also Figure 1 and Figure 4The discharge pipe 4 includes a discharge main pipe 401, which is connected to the bottom of the cryogenic spherical tank 1. Two branch pipes 402 are fixedly connected to the bottom of the discharge main pipe 401. The ends of the two branch pipes 402 are fixedly connected to mounting flanges 403. Switch valves 404 are installed on the two branch pipes 402. The cryogenic spherical tank 1 can be connected to the ethylene separation device through the mounting flanges 403, so that one branch pipe 402 is connected to the discharge main pipe 401 and the other branch pipe 402 is used for discharge. In this way, when the ethylene gas phase is precooled, the gaseous phase ethylene is recycled, thereby avoiding the emission of gaseous phase ethylene and improving the precooling efficiency.

[0025] During work, the staff uses the ladder frame 3 to climb up, and enters the manned hanging basket 206. The driving motor 211 drives the driving gear 210 to rotate, and the driving gear 210 rotates and rolls on the guide tooth groove 208. The driving gear 210 rolls and drives the driving seat 209 to move. The movement of the driving seat 209 drives the manned hanging basket 206 to move, and drives the staff to move between the tops of multiple low-temperature spherical tanks 1, which facilitates maintenance and improves maintenance efficiency.

[0026] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. An ethylene storage tank for improving pre-cooling efficiency, comprising a plurality of cryogenic spherical tanks (1), characterized in that: A ladder rack (3) is provided outside the plurality of cryogenic spherical tanks (1), a manned moving mechanism (2) is fixedly connected to the top of the ladder rack (3), and a discharge pipe (4) is provided at the bottom of each cryogenic spherical tank (1); The manned mobile mechanism (2) comprises two upright frames (201), the tops of the two upright frames (201) are fixedly connected to guide rails (202), the tops of each guide rail (202) are fixedly connected to a fixed seat (203), the fixed seat (203) is fixedly connected to a guide rod (204), the two guide rods (204) are slidably connected to a guide seat (205), a manned hanging basket (206) is fixedly connected between the two pairs of guide seats (205), and the manned hanging basket (206) is fixedly provided with a fixed inner portion. A handrail (207) is connected, and guide tooth grooves (208) are provided inside the two guide rails (202). Both sides of the manned hanging basket (206) are fixedly connected to a driving seat (209), and a driving gear (210) is rotatably connected inside the driving seat (209). The end of the driving gear (210) is fixedly connected to a driving motor (211). An electric push rod (212) is provided on one side of the driving gear (210), and the end of the output shaft of the electric push rod (212) is fixedly connected to a locking tooth block (213).

2. The ethylene storage tank with improved pre-cooling efficiency according to claim 1, characterized in that: The two upright frames (201) are fixedly mounted on both sides of the top of the ladder frame (3), and the two guide rails (202) are symmetrically arranged on the two upright frames (201).

3. The ethylene storage tank with improved pre-cooling efficiency according to claim 1, characterized in that: The driving seat (209) is detachably connected to the manned hanging basket (206) via bolts, and the driving seat (209) is arranged inside the guide tooth groove (208).

4. The ethylene storage tank with improved pre-cooling efficiency according to claim 1, characterized in that: The driving motor (211) is configured as a reduction motor, and the output shaft end of the driving motor (211) is connected to the driving gear (210).

5. The ethylene storage tank with improved pre-cooling efficiency according to claim 1, characterized in that: The bottom portion of the driving gear (210) passes through the driving seat (209), and the driving gear (210) is meshed with the guide tooth groove (208).

6. The ethylene storage tank with improved pre-cooling efficiency according to claim 1, characterized in that: The electric push rod (212) is fixedly mounted on the driving seat (209), and the locking tooth block (213) matches the driving gear (210).

7. The ethylene storage tank with improved pre-cooling efficiency according to claim 1, characterized in that: The discharge pipe (4) comprises a discharge main pipe (401), and the discharge main pipe (401) is connected to the bottom of the cryogenic spherical tank (1).

8. The ethylene storage tank with improved pre-cooling efficiency according to claim 7, characterized in that: The bottom end of the discharge main pipe (401) is fixedly connected to two branch pipes (402), the ends of the two branch pipes (402) are fixedly connected to mounting flanges (403), and the two branch pipes (402) are both installed with switch valves (404).

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