Heat exchange structure of miniaturized natural gas liquefaction deamination system

Abstract

The utility model relates to the technical field of heat exchange, and discloses a heat exchange structure of a miniaturized natural gas liquefaction deamination system, which comprises an equipment main body, a heat exchange mechanism and a pressure relief mechanism, the pressure relief mechanism comprises a mounting cylinder, and the inner wall of the top end of the mounting cylinder is fixedly connected with a mounting block; a pressure spring is fixedly connected to the inner wall of the top end of the mounting block, a sealing plug is fixedly connected to the bottom end of the pressure spring, an air inlet hole is formed in the position, corresponding to the sealing plug, of the bottom end of the mounting cylinder, and an exhaust pipe is fixedly connected to the side face of the mounting cylinder. Pressure is increased when natural gas is conveyed to the right side of the shell by increasing the temperature and the volume of the natural gas, the pressure on the sealing plug is increased to push the sealing plug to move upwards, the sealing plug is separated from the air inlet hole, the natural gas enters a collecting tank through a connecting guide pipe on the side face of the exhaust pipe, and damage caused by too large pressure in an equipment body is avoided; and the equipment safety can be improved.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange technology, and more specifically to a heat exchange structure for a miniaturized natural gas liquefaction deammoniation system. Background Technology

[0002] Natural gas, as a clean energy source rich in renewable and low-carbon compounds, has received increasing attention. However, natural gas contains a large amount of acidic gases such as carbon dioxide, which not only reduces the quality of natural gas but may also cause pollution and harm to the environment. Therefore, it needs to be treated through ammonia removal processes. The basic principle of natural gas ammonia removal is to utilize the alkaline reaction properties of amine solutions to absorb acidic gases such as carbon dioxide, thereby separating them from the natural gas. The natural gas ammonia removal process includes absorption, heating, desorption, and regeneration. The basic process is as follows: First, natural gas is sent into an absorption tower to contact and absorb with a deamming agent, and then heated through a heat exchanger. Then, the deammed liquid containing acidic gases such as carbon dioxide is discharged and desorbed through a desorption tower. Finally, the deammed liquid, from which CO2 and other gases have been removed, is regenerated and returned to the absorption tower for use.

[0003] Insufficiency of existing technology: The heat exchange structure is an important component in natural gas deammoniation equipment. It heats natural gas by exchanging heat with hot water. However, during use, the temperature of natural gas rises, which increases the internal pressure of the heat exchange structure. Existing heat exchange structures lack pressure relief structures, which can easily cause equipment damage. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a heat exchange structure for a miniaturized natural gas liquefaction deammoniation system to solve the problems existing in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a heat exchange structure for a miniaturized natural gas liquefaction and ammonia removal system, comprising a main body, and further comprising: a heat exchange mechanism and a pressure relief mechanism. The inner side wall of the main body is fixedly connected to the side of the heat exchange mechanism, and the bottom end of the pressure relief mechanism is fixedly connected to the top end of the main body. The main body includes a shell, a natural gas connector is fixedly connected to the side of the shell, a partition is fixedly connected to the inner side wall of the shell, and a heating water pipe is fixedly connected to the bottom end of the shell. The heat exchange mechanism includes a delivery pipe, the side of which is fixedly connected to the side of the partition. The pressure relief mechanism includes an installation cylinder, the bottom end of which is fixedly connected to the top end of the shell, an installation block is fixedly connected to the inner side of the top end of the installation cylinder, a pressure spring is fixedly connected to the inner side of the top end of the installation block, a sealing plug is fixedly connected to the bottom end of the pressure spring, an air inlet is provided at the position corresponding to the sealing plug at the bottom end of the installation cylinder, an exhaust pipe is fixedly connected to the side of the installation cylinder, and the side of the sealing plug engages with the side of the air inlet.

[0006] Furthermore, a protective sleeve is movably connected to the inner side wall of the mounting block, and the bottom end of the protective sleeve is fixedly connected to the top end of the sealing plug.

[0007] Furthermore, a pressure block is fixedly connected to the top of the sealing plug, and an installation hole is opened on the inner wall of the top of the mounting block. A buffer spring is fixedly connected to the top of the mounting hole, and a touch switch is fixedly connected to the bottom of the buffer spring. The diameter of the pressure block is larger than the diameter of the mounting hole.

[0008] Furthermore, a temperature detection device is fixedly connected to the top of the housing, a first electromagnetic control valve is fixedly connected to the side of the natural gas connector, and a second electromagnetic control valve is fixedly connected to the side of the heating water pipe.

[0009] Furthermore, a guide plate is fixedly connected to the inner side wall of the shell, and the guide plates are distributed in an alternating manner.

[0010] Furthermore, a heat-conducting pipe is fixedly connected to the side of the conveying pipe, and a through hole is opened on the side of the heat-conducting pipe. The side of the heat-conducting pipe is fixedly connected to the side of the guide plate.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] 1. This utility model increases the volume of natural gas by increasing the temperature, which increases the pressure when the natural gas is delivered to the right side of the shell. This increased pressure on the sealing plug pushes the sealing plug upward, causing it to separate from the air inlet. The natural gas then enters the collection tank through the side connecting pipe of the exhaust pipe, thus avoiding damage caused by excessive internal pressure of the equipment and improving equipment safety.

[0013] 2. This utility model uses a semi-circular guide plate to divide the space of the hot water entering the shell and allow it to flow, avoiding the hot water from flowing in a straight line inside the shell, extending the contact time between the hot water and the delivery pipe, and thus improving the heat exchange efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the main body of the device according to this utility model;

[0017] Figure 4 This is a schematic diagram of the guide plate structure of this utility model;

[0018] Figure 5 This is a cross-sectional structural diagram of the pressure relief mechanism of this utility model.

[0019] The attached figures are labeled as follows: 1. Main body of the equipment; 101. Shell; 102. Partition plate; 103. Heating water pipe; 104. Natural gas connector; 105. First electromagnetic control valve; 106. Temperature detection device; 107. Second electromagnetic control valve; 2. Heat exchange mechanism; 201. Heat conduction pipe; 202. Guide plate; 203. Delivery pipe; 3. Pressure relief mechanism; 301. Mounting cylinder; 302. Mounting block; 303. Air inlet; 304. Mounting hole; 305. Buffer spring; 306. Touch switch; 307. Pressure spring; 308. Pressure block; 309. Sealing plug; 310. Exhaust pipe; 311. Protective sleeve. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The heat exchange structure of the miniaturized natural gas liquefaction deammoniation system involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Reference Figures 1 to 5This utility model provides a heat exchange structure for a miniaturized natural gas liquefaction and ammonia removal system, including a main body 1, a heat exchange mechanism 2, and a pressure relief mechanism 3. The inner side wall of the main body 1 is fixedly connected to the side of the heat exchange mechanism 2, and the bottom end of the pressure relief mechanism 3 is fixedly connected to the top end of the main body 1. The main body 1 includes a shell 101, a natural gas connector 104 is fixedly connected to the side of the shell 101, a partition 102 is fixedly connected to the inner side wall of the shell 101, and the bottom end of the shell 101 is fixedly connected to the top end of the main body 1. A heating water pipe 103 is fixedly connected to the heat exchange mechanism 2, which includes a conveying pipe 203. The side of the conveying pipe 203 is fixedly connected to the side of the partition 102. The pressure relief mechanism 3 includes a mounting cylinder 301. The bottom end of the mounting cylinder 301 is fixedly connected to the top end of the housing 101. A mounting block 302 is fixedly connected to the inner wall of the top end of the mounting cylinder 301. A pressure spring 307 is fixedly connected to the inner wall of the top end of the mounting block 302. A sealing plug 309 is fixedly connected to the bottom end of the pressure spring 307. The bottom end of the mounting cylinder 301 corresponds to... An air inlet 303 is provided at the position of the sealing plug 309. An exhaust pipe 310 is fixedly connected to the side of the mounting cylinder 301. The side of the sealing plug 309 and the side of the air inlet 303 engage with each other. It is connected to the natural gas pipeline through natural gas connectors 104 at both ends of the housing 101. It is connected to hot water through two heating water pipes 103. Natural gas is transported from the left side to the right side of the housing 101, and hot water is transported from the right side to the left side of the housing 101. After the natural gas enters the housing 101 through the left natural gas connector 104, it enters the delivery pipe 203, so that the heat conduction pipe 201 comes into contact with the hot water inside the housing 101 for heat exchange, thereby heating the natural gas. As the temperature increases, the volume of natural gas increases, and the pressure of natural gas increases when it is transported to the right side of the housing 101. This increases the pressure on the sealing plug 309, pushing the sealing plug 309 upward and separating the sealing plug 309 from the air inlet 303. The natural gas enters the collection tank through the conduit connected to the side of the exhaust pipe 310, avoiding damage caused by excessive internal pressure in the main body of the equipment.

[0022] The mounting block 302 has a protective sleeve 311 movably connected to its inner side wall. The bottom end of the protective sleeve 311 is fixedly connected to the top end of the sealing plug 309. When the pressure spring 307 extends or retracts, the protective sleeve 311 slides along the inner side wall of the mounting block 302 to prevent natural gas from contacting the pressure spring 307 and causing damage.

[0023] The sealing plug 309 is fixedly connected to a pressure block 308 at its top. The mounting block 302 has a mounting hole 304 on its top inner wall. A buffer spring 305 is fixedly connected to the top of the mounting hole 304. A touch switch 306 is fixedly connected to the bottom of the buffer spring 305. The diameter of the pressure block 308 is larger than the diameter of the mounting hole 304. When the internal pressure of the housing 101 is too high, the pressure block 308 contacts the touch switch 306, causing the touch switch 306 to send a signal to the control terminal to remind the operator to handle the situation in time.

[0024] The top of the housing 101 is fixedly connected to a temperature detection device 106, the side of the natural gas connector 104 is fixedly connected to a first electromagnetic control valve 105, and the side of the heating water connector 103 is fixedly connected to a second electromagnetic control valve 107. Both ends of the housing 101 are equipped with temperature detection devices 106. During use, the temperature monitoring device 106 detects the temperature change after the natural gas is heated in real time, and controls the efficiency of heat exchange between natural gas and hot water through the first electromagnetic control valve 105 and the second electromagnetic control valve 107.

[0025] Among them, the inner wall of the side of the shell 101 is fixedly connected with a guide plate 202. The guide plates 202 are staggered and have a semi-circular structure, so that the hot water entering the shell 101 is divided into spaces along the guide plate 202 and flows, avoiding the hot water flowing in a straight line inside the shell 101, prolonging the contact time between the hot water and the delivery pipe 203, and improving the heat exchange efficiency.

[0026] The heat pipe 201 is fixedly connected to the side of the conveying pipe 203. The heat pipe 201 has a through hole on its side. The side of the heat pipe 201 is fixedly connected to the side of the guide plate 202. The through hole on the side of the heat pipe 201 increases the contact area with the hot water inside the shell 101 and improves the heat exchange efficiency.

[0027] The working principle of this utility model is as follows: The natural gas is connected to a natural gas pipeline via natural gas connectors 104 at both ends of the housing 101, and connected to hot water via two heating water pipes 103. Natural gas is supplied from the left side to the right side of the housing 101. After entering the housing 101 through the left natural gas connector 104, the natural gas enters the delivery pipe 203. Hot water is supplied from the right side to the left side of the housing 101, flowing along a space divided by the guide plate 202 to prevent straight flow within the housing 101. This prolongs the contact time between the hot water and the delivery pipe 203, allowing heat exchange between the heat pipe 201 and the hot water inside the housing 101. Temperature detection devices 106 are provided at both ends of the housing 101, and the temperature is monitored in real time during use. The system detects temperature changes after natural gas is heated and controls the efficiency of heat exchange between natural gas and hot water through the first electromagnetic control valve 105 and the second electromagnetic control valve 107, thereby achieving the heating of natural gas. As the temperature increases, the volume of natural gas increases, causing the pressure to increase when natural gas is delivered to the right side of the shell 101. This increases the pressure on the sealing plug 309, pushing the sealing plug 309 upward and separating it from the air inlet 303. Natural gas then enters the collection tank through the side connecting pipe of the exhaust pipe 310, preventing damage caused by excessive internal pressure in the main body 1. When the internal pressure of the shell 101 is too high, the pressure block 308 contacts the touch switch 306, causing the touch switch 306 to send a signal to the control terminal, reminding the operator to handle the situation promptly.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A heat exchange structure of a miniaturized natural gas liquefaction and deamination system including a device main body (1), characterized by, Also include: The heat exchange mechanism (2) and pressure relief mechanism (3), the side wall of the device body (1) and the side of the heat exchange mechanism (2) are fixedly connected, the bottom end of the pressure relief mechanism (3) and the top end of the device body (1) are fixedly connected, the device body (1) comprises a shell (101), the side of the shell (101) is fixedly connected with a natural gas joint (104), the side inner wall of the shell (101) is fixedly connected with a partition (102), the bottom end of the shell (101) is fixedly connected with a heating water pipe (103), the heat exchange mechanism (2) comprises a conveying pipe (203), the side of the conveying pipe (203) is fixedly connected with the side of the partition (102), the pressure relief mechanism (3) comprises a mounting cylinder (301), the bottom end of the mounting cylinder (301) is fixedly connected with the top end of the shell (101), the top end inner wall of the mounting cylinder (301) is fixedly connected with a mounting block (302), the top end inner wall of the mounting block (302) is fixedly connected with a pressure spring (307), the bottom end of the pressure spring (307) is fixedly connected with a sealing plug (309), the bottom end of the mounting cylinder (301) is provided with an air inlet hole (303) corresponding to the position of the sealing plug (309), the side of the mounting cylinder (301) is fixedly connected with an exhaust pipe (310), the side of the sealing plug (309) is engaged with the side of the air inlet hole (303).

2. The heat exchange structure of the miniaturized natural gas liquefaction and deamination system according to claim 1, characterized in that: The side inner wall of the mounting block (302) is movably connected with a protective sleeve (311), and the bottom end of the protective sleeve (311) is fixedly connected with the top end of the sealing plug (309).

3. The heat exchange structure of the miniaturized natural gas liquefaction and deamination system according to claim 1, characterized in that: The top end of the sealing plug (309) is fixedly connected with a pressing block (308), the top end inner wall of the mounting block (302) is provided with a mounting hole (304), the top end of the mounting hole (304) is fixedly connected with a buffer spring (305), the bottom end of the buffer spring (305) is fixedly connected with a touch switch (306), and the diameter of the pressing block (308) is greater than the diameter of the mounting hole (304).

4. The heat exchange structure of the miniaturized natural gas liquefaction and deamination system according to claim 1, characterized in that: The top end of the shell (101) is fixedly connected with a temperature detection device (106), the side of the natural gas joint (104) is fixedly connected with a first electromagnetic control valve (105), and the side of the heating water pipe (103) is fixedly connected with a second electromagnetic control valve (107).

5. The heat exchange structure of a miniaturized natural gas liquefaction and deamination system according to claim 1, characterized in that: The side inner wall of the shell (101) is fixedly connected with a guide plate (202), and the guide plates (202) are staggered.

6. The heat exchange structure of a miniaturized natural gas liquefaction and deamination system according to claim 1, characterized in that: The side of the conveying pipe (203) is fixedly connected with a heat pipe (201), the side of the heat pipe (201) is provided with a through hole, and the side of the heat pipe (201) is fixedly connected with the side of the guide plate (202).

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