A drainage device for liquefied natural gas production

Abstract

This utility model discloses a drainage device for liquefied natural gas (LNG) production, relating to the technical field of natural gas production equipment. It includes a drying tank with a lid on top and a gas-transmitting solenoid valve on the inner bottom side. A drying chamber is located on one side of the drying tank. An exhaust fan is located on the inner top side of the drying chamber, and an electric heating device is located on the outer bottom side. Two movable screen components are vertically and evenly spaced near the electric heating device on the side of the exhaust fan. Two movable partition components are respectively located on opposite sides of the two movable screen components near the drying chamber. Through this structure, this utility model can perform drainage and drying processes separately through the two movable screen components, ensuring the device's working efficiency, and is simple to operate, easy to maintain, and has low maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of natural gas production equipment technology, specifically to a drainage device for liquefied natural gas production. Background Technology

[0002] Liquefied natural gas (LNG) is the product of natural gas changing from a gaseous state to a liquid state when cooled to approximately -162°C at atmospheric pressure. This process reduces the volume of natural gas by about 600 times, making it easier to store and transport. As a clean and efficient energy source, LNG plays an increasingly important role in the global energy structure.

[0003] Existing drainage systems for liquefied natural gas (LNG) production typically employ molecular sieve dryers to effectively remove moisture from the natural gas, relying on their adsorption properties. However, after prolonged operation, molecular sieve dryers accumulate significant amounts of moisture and require periodic replacement. This process is cumbersome and incurs high maintenance costs. Therefore, we propose a new drainage system for LNG production to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide a drainage device for liquefied natural gas (LNG) production, addressing the shortcomings of existing LNG production drainage devices described in the background section. These devices typically employ molecular sieve dryers to effectively remove moisture from LNG, relying on adsorption to absorb the water. However, after prolonged operation, molecular sieve dryers absorb a significant amount of moisture, necessitating periodic replacement. This process is cumbersome and incurs high maintenance costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A drainage device for liquefied natural gas production includes a drying barrel, a barrel cover on the top of the drying barrel, a gas supply solenoid valve on the inner side of the bottom of the drying barrel, a drying box on one side of the drying barrel, an exhaust fan on the inner side of the top of the drying box, an electric heating device on the outer side of the bottom of the drying box, two movable screen components vertically and evenly spaced on the side of the exhaust fan near the electric heating device, and two movable partition components on the two movable screen components that are far apart from each other on the two sides near the end of the drying box.

[0007] The drying barrel includes a barrel body, with an air supply pipe fixedly connected to the bottom of the barrel body. Two barrel body sliding grooves are vertically and evenly spaced on the side of the barrel body near the drying chamber, and two sealing rings are respectively sealed to the openings of the two barrel body sliding grooves.

[0008] Furthermore, the drying oven includes a box body, a fan fixing pipe fixedly connected to the top of the box body, a ventilation pipe fixedly connected to the bottom of the box body, and two box body sliding grooves vertically and evenly spaced on the side of the box body near the barrel body. The box body is fixedly connected to two barrel body sliding grooves on the barrel body through the two box body sliding grooves respectively, and a filter cover is fixedly connected to the bottom of the ventilation pipe.

[0009] Furthermore, the exhaust fan is fixedly connected to the inside of the fan mounting pipe, and the electric heating device is fixedly connected to the outside of the bottom of the housing.

[0010] Furthermore, the movable sieve component includes two movable cylinders, the output ends of the two movable cylinders are fixedly connected to a molecular sieve through the box body, the movable cylinders are fixedly connected to the box body, and the two sides of the molecular sieve are slidably connected to the barrel body groove and the box body groove respectively, and the molecular sieve is movably sealed with the sealing ring.

[0011] Furthermore, the movable partition component includes two electric push rods, with a heat insulation plate fixedly connected to the top of each electric push rod and the bottom of the electric push rods fixedly connected to the box body. The heat insulation plate is slidably connected to the box body through a sliding groove, and one side of the heat insulation plate is movably sealed to the barrel body through a sealing gasket.

[0012] Furthermore, the bucket lid includes a lid body, the top of which is fixedly connected to an air outlet pipe, the lid body is fixedly connected to the bucket body, and the air supply solenoid valve is movably connected to the inside of the air supply pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model uses two movable cylinders to drive the molecular sieve to slide inside the drying barrel and drying box. When the molecular sieve has absorbed a large amount of water and needs to be replaced, the two movable cylinders bring the molecular sieve to the bottom of the drying box. The bottom of the drying box is heated by an electric heating element, which raises the temperature inside the drying box and evaporates the water on the molecular sieve. It is simple to operate and easy to maintain.

[0015] 2. This utility model uses two movable screen components to perform drainage and drying processes respectively, which can ensure the working efficiency of the device. In addition, the two movable partition components can separate the drying barrel and the drying box to prevent natural gas leakage. Attached Figure Description

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

[0017] Figure 2 This is a side sectional view of the installation structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the drying oven installation structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the installation structure of the movable partition component of this utility model;

[0020] Reference numerals: 1. Drying barrel; 101. Barrel body; 102. Gas supply pipe; 103. Barrel body slide groove; 104. Sealing ring; 2. Barrel lid; 201. Lid body; 202. Gas outlet pipe; 3. Gas supply solenoid valve; 4. Drying oven; 401. Oven body; 402. Fan fixing pipe; 403. Ventilation pipe; 404. Oven body slide groove; 405. Filter cover; 5. Exhaust fan; 6. Electric heating device; 7. Movable sieve component; 701. Movable cylinder; 702. Molecular sieve; 8. Movable partition component; 801. Electric push rod; 802. Heat insulation plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4 This utility model provides a technical solution: a drainage device for liquefied natural gas production, including a drying barrel 1, a barrel cover 2 on the top of the drying barrel 1, a gas supply solenoid valve 3 on the inner side of the bottom of the drying barrel 1, a drying box 4 on one side of the drying barrel 1, an exhaust fan 5 on the inner side of the top of the drying box 4, an electric heating device 6 on the outer side of the bottom of the drying box 4, two movable screen components 7 vertically and evenly spaced on the side of the exhaust fan 5 near the electric heating device 6, and two movable partition components 8 on the two movable screen components 7 that are far apart from each other on the two sides near the drying box.

[0023] The drying barrel 1 includes a barrel body 101. A gas supply pipe 102 is fixedly connected to the bottom of the barrel body 101. Two barrel body slide grooves 103 are vertically and evenly spaced on the side of the barrel body 101 near the drying box 4. Two sealing rings 104 are respectively sealed and connected to the openings of the two barrel body slide grooves 103.

[0024] The drying oven 4 includes a chamber body 401. A fan mounting pipe 402 is fixedly connected to the top of the chamber body 401, and a ventilation pipe 403 is fixedly connected to the bottom of the chamber body 401. Two chamber body sliding grooves 404 are vertically and evenly spaced on the side of the chamber body 401 near the barrel body 101. The chamber body 401 is fixedly connected to two barrel body sliding grooves 103 on the barrel body 101 through the two chamber body sliding grooves 404 respectively. A filter cover 405 is fixedly connected to the bottom of the ventilation pipe 403. In this example, by setting the filter cover 405, dust in the outside air can be prevented from entering the interior of the chamber body 401 and affecting the drying process.

[0025] The exhaust fan 5 is fixedly connected to the inside of the fan mounting pipe 402, and the electric heating device 6 is fixedly connected to the outside of the bottom of the housing 401. In this example, the electric heating device 6, which is located on the outside of the bottom of the housing 401, can heat the bottom of the housing 401, thereby raising the temperature inside the housing 401 for drying. This avoids contact with natural gas and ensures the safe operation of the device.

[0026] The movable screen component 7 includes two movable cylinders 701. The output ends of the two movable cylinders 701 pass through the housing 401 and are fixedly connected to a molecular sieve 702. The movable cylinders 701 are fixedly connected to the housing 401. The two sides of the molecular sieve 702 are slidably connected to the barrel slide groove 103 and the housing slide groove 404, respectively. The molecular sieve 702 is movably sealed with a sealing ring 104. In this example, by setting the sealing ring 104, natural gas leakage can be prevented, ensuring the safe operation of the device.

[0027] The movable partition component 8 includes two electric push rods 801. A heat insulation plate 802 is fixedly connected to the top of each push rod 801, and the bottom of each push rod 801 is fixedly connected to the housing 401. The heat insulation plate 802 is slidably connected to the housing slide groove 404, and one side of the heat insulation plate 802 is movably sealed to the barrel 101 via a sealing gasket. In this example, by setting the heat insulation plate 802, heat generated during drying can be prevented from entering the drying barrel, and at the same time, natural gas leakage during the drying process can be avoided.

[0028] The lid 2 includes a lid body 201, with an air outlet pipe 202 fixedly connected to the top of the lid body 201. The lid body 201 is fixedly connected to the barrel body 101, and the air supply solenoid valve 3 is movably connected to the inside of the air supply pipe 102.

[0029] Working principle: Natural gas containing moisture is delivered to the bottom of the tank 101 through the gas supply pipe 102. Due to the principle that natural gas is less dense than air and rises, the natural gas rises and passes through the molecular sieve 702, filtering out the moisture. The dried natural gas is then discharged from the drying tank 1 through the gas outlet pipe 202 on the cover 201. When the molecular sieve 702 needs to be replaced, two movable cylinders 701 drive the molecular sieve 702 to slide from the tank slide groove 103 into the box slide groove 404. The other two movable cylinders 701 also drive the... The molecular sieve 702 slides from the box slide 404 into the barrel slide 103 and forms a seal with the sealing ring 104. The two movable cylinders 701 corresponding to the molecular sieve 702 slide into the drying chamber 4 alternately, driving the heat insulation plate 802 to slide into the box slide 404, separating and sealing the drying barrel 1 and the drying chamber 4. The electric heating device 6 heats the bottom of the box 401, causing the temperature inside the box 401 to rise and dry the moisture on the molecular sieve 702. The exhaust fan 5 works to discharge water vapor from the box 401.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drain device for liquefied natural gas production, characterized by: The equipment includes a drying barrel (1), a barrel cover (2) on the top of the drying barrel (1), a gas supply solenoid valve (3) on the inner side of the bottom of the drying barrel (1), a drying box (4) on one side of the drying barrel (1), an exhaust fan (5) on the inner side of the top of the drying box (4), an electric heating device (6) on the outer side of the bottom of the drying box (4), two movable screen components (7) are vertically and evenly spaced on the side of the exhaust fan (5) near the electric heating device (6), and two movable partition components (8) are respectively provided on the two movable screen components (7) on the two sides of the two movable screen components (7) that are far apart from each other near the end of the drying box. The drying barrel (1) includes a barrel body (101), and a gas supply pipe (102) is fixedly connected to the bottom of the barrel body (101). Two barrel body grooves (103) are vertically and evenly spaced on the side of the barrel body (101) near the drying box (4). Two sealing rings (104) are respectively sealed and connected at the opening of the two barrel body grooves (103).

2. The drain device for LNG production according to claim 1, characterized in that: The drying oven (4) includes a box body (401), a fan fixing pipe (402) is fixedly connected to the top of the box body (401), a ventilation pipe (403) is fixedly connected to the bottom of the box body (401), and two box body slides (404) are vertically and evenly spaced on the side of the box body (401) near the barrel body (101). The box body (401) is fixedly connected to two barrel body slides (103) on the barrel body (101) through the two box body slides (404), and a filter cover (405) is fixedly connected to the bottom of the ventilation pipe (403).

3. The drain device for LNG production according to claim 2, characterized in that: The exhaust fan (5) is fixedly connected to the inside of the fan fixing pipe (402), and the electric heating device (6) is fixedly connected to the outside of the bottom of the box (401).

4. The drain device for LNG production according to claim 2, characterized in that: The movable sieve component (7) includes two movable cylinders (701). The output ends of the two movable cylinders (701) pass through the box body (401) and are fixedly connected to a molecular sieve (702). The movable cylinders (701) are fixedly connected to the box body (401). The two sides of the molecular sieve (702) are slidably connected to the barrel slide groove (103) and the box slide groove (404) respectively. The molecular sieve (702) is movably sealed with the sealing ring (104).

5. A drainage device for liquefied natural gas production according to claim 2, characterized in that: The movable partition component (8) includes two electric push rods (801), with a heat insulation plate (802) fixedly connected to the top of the two electric push rods (801), and the bottom of the electric push rods (801) fixedly connected to the box body (401). The heat insulation plate (802) is vertically slidably connected to the box body slide groove (404), and one side of the heat insulation plate (802) is movably sealed to the barrel body (101) through a sealing gasket.

6. The drain device for LNG production according to claim 1, characterized in that: The lid (2) includes a lid body (201), the top of which is fixedly connected to an air outlet pipe (202). The lid body (201) is fixedly connected to the barrel body (101), and the air supply solenoid valve (3) is movably connected to the inside of the air supply pipe (102).

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