LNG (liquefied natural gas) gas pipe network pressure reducing device

Abstract

The utility model discloses an LNG (Liquefied Natural Gas) gas pipe network pressure reducing device which comprises a treatment box and is characterized in that a pressure reducing unit is arranged on the inner side of the treatment box, a cooling and liquefying mechanism for cooling the pressure reducing unit is arranged on the outer wall of the treatment box, and a uniform heating mechanism for uniformly heating the pressure reducing unit is arranged in a cavity of the treatment box. A uniform heating mechanism is arranged, a motor drives stirring blades to rotate to stir water, the water in the box is uniformly heated in cooperation with a heating rod, and the pressurizing stability is guaranteed; and through the arranged switch control assembly, when the water body in the treatment box is heated, hot air in the treatment box is prevented from being conducted into the cooling box through the circulating pipe, and the cooling effect is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of LNG gas, in particular to a LNG gas pipeline network pressure reducing device. Background Art

[0002] LNG is the abbreviation of liquefied natural gas. Natural gas is a combustible gas that is naturally mined in gas fields and is mainly composed of methane. LNG is made by cooling gaseous natural gas to -162°C under normal pressure to condense it into liquid. After liquefaction, natural gas can greatly save storage and transportation space, and it has the characteristics of high calorific value and high performance. LNG is a clean and efficient energy source.

[0003] After searching, the application number is "202321708856.5", which provides an LNG gas pipeline network decompression system, including a processing box: a decompression unit is arranged inside the processing box, and the decompression unit includes a processing pipe 1, and the processing pipe 1 is arranged inside the processing box. The lower end of the processing pipe 1 is fixedly connected with a decompression chamber, and the right side of the lower end of the decompression chamber is fixedly connected with a discharge pipe, and the outer side of the discharge pipe is provided with a decompression valve 2, and the outer side of the processing pipe 1 is provided with a decompression valve 1, and the processing pipe 2 is fixedly connected between the decompression chamber and the discharge pipe, and the right side of the processing box is fixedly connected with a cooling box. By providing a processing pipe 1, a decompression chamber, a discharge pipe, a decompression valve 1 and a decompression valve 2, it is convenient to reduce the pressure of LNG gas, and through the processing pipe, the cooling box and the circulation pipe, it is convenient to discharge part of the gasified gas in the decompression chamber and cool it down, so as to avoid the gasified gas increasing the pressure of the gas and affecting the decompression effect.

[0004] Although the above patent avoids the increase in gas pressure caused by vaporized gas, the heating rod is set in a relatively local position, which causes uneven heating of the water in the box during heating, affecting the heating effect; and because the cold water circulation pipe is connected to the top of the treatment box, when the water in the treatment box is heated, the hot air will be conducted to the cooling box through the circulation pipe, thereby affecting the cooling effect. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, one of the purposes of the utility model is to provide an LNG gas pipeline network pressure reducing device, through the uniform heating mechanism set up, the motor drives the mixing blades to rotate, stir the water body, and cooperate with the heating rod to heat the water body in the box evenly, thereby ensuring the stability of pressurization; through the set switch control component, when the water body in the treatment box is heated, the hot air in the treatment box is conducted to the cooling box through the circulation pipe, thereby affecting the cooling effect.

[0006] One of the purposes of the utility model is achieved by the following technical solution: A LNG gas pipeline network decompression device, comprising: a processing box, a decompression unit is arranged on the inner side of the processing box, a cooling and liquefying mechanism for cooling the decompression unit is arranged on the outer wall of the processing box, and a uniform heating mechanism for uniformly heating the decompression unit is arranged in the cavity of the processing box;

[0007] The uniform heating mechanism comprises a motor and a heating rod, the side wall of the heating rod is fixedly connected to the inner wall of the processing box, the outer wall of the motor is fixedly connected to the bottom end of the processing box, the output end of the motor is fixedly connected to a rotating shaft, the outer wall of the rotating shaft penetrates through the inner wall of the processing box and is fixedly connected to a stirring blade at the bottom end;

[0008] The cooling and liquefaction mechanism includes a cooling box fixedly connected to the outer wall of the treatment box, the top of the cooling box is connected with a water inlet pipe, the lower side wall of the cooling box is connected with a circulation pipe, the outer wall of the circulation pipe is installed with a water pump, the other end of the circulation pipe is connected with the top of the treatment box, and the circulation pipe is provided with a switch control component for controlling the closure of the circulation pipe. Through the uniform heating mechanism, the motor drives the mixing blade to rotate, stir the water body, and cooperates with the heating rod to heat the water body in the box uniformly, ensuring the stability of pressurization; through the switch control component, when the water body in the treatment box is heated, the hot air in the treatment box is conducted to the cooling box through the circulation pipe to affect the cooling effect.

[0009] According to the LNG gas pipeline network pressure reducing device, the switch control assembly includes a fixing sleeve fixedly connected to the outer wall of the circulation pipe, a micro servo motor is fixedly connected to the side wall of the fixing sleeve, and an output end of the micro servo motor passes through the inner wall of the circulation pipe and is fixedly connected to a baffle.

[0010] According to the LNG gas pipe network pressure reducing device, the side wall of the baffle is in contact with the inner wall of the circulation pipe, and a thermal insulation layer is provided at the bottom end of the baffle.

[0011] A LNG gas pipeline network decompression device is provided, wherein the decompression unit includes a processing pipe 1, the processing pipe 1 is arranged on the inner side of a processing box, the lower end of the processing pipe 1 is fixedly connected with a decompression chamber, the right side of the lower end of the decompression chamber is fixedly connected with a discharge pipe, the outer side of the discharge pipe is provided with a decompression valve 2, the outer side of the processing pipe 1 is provided with a decompression valve 1, and the processing pipe 2 is connected through the decompression chamber and the discharge pipe.

[0012] According to the LNG gas pipeline network pressure reducing device, a control valve is provided on the outer side of the second processing pipe.

[0013] According to the LNG gas pipeline network pressure reducing device, the second processing pipe is partially located in the cooling box.

[0014] According to the LNG gas pipeline network decompression device, the decompression chamber is arranged in a serpentine structure.

[0015] According to the LNG gas pipeline network pressure reducing device, a water outlet pipe is fixedly connected to the left side of the processing box.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0018] Figure 1 This is a three-dimensional diagram of a LNG gas pipeline network pressure reducing device of the utility model;

[0019] Figure 2 This is a structural diagram of a LNG gas pipeline network pressure reducing device of the utility model;

[0020] Figure 3 This is an enlarged view of point A of a LNG gas pipeline network pressure reducing device of the utility model;

[0021] Figure 4 This is an enlarged view of point B of an LNG gas pipeline pressure reducing device of the utility model.

[0022] Legend:

[0023] 1. Processing box; 2. Pressure reducing unit; 3. Switch control assembly; 4. Water outlet pipe; 5. Uniform heating mechanism; 201. Processing tube 1; 202. Pressure reducing valve 1; 203. Pressure reducing chamber; 204. Discharge pipe; 205. Pressure reducing valve 2; 206. Processing tube 2; 207. Cooling box; 208. Water inlet pipe; 209. Circulation pipe; 210. Control valve; 211. Water pump; 301. Fixed sleeve; 302. Micro servo motor; 303. Baffle; 501. Heating rod; 502. Motor; 503. Rotating shaft; 504. Stirring blade. DETAILED DESCRIPTION

[0024] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0025] Reference Figure 1-4The utility model embodiment is a LNG gas pipeline network pressure reducing device, which comprises: a processing box 1, a water outlet pipe 4 is fixedly connected to the left side of the processing box 1, a pressure reducing unit 2 is arranged inside the processing box 1, a cooling and liquefying mechanism for cooling the pressure reducing unit 2 is arranged on the outer wall of the processing box 1, and a uniform heating mechanism 5 for uniformly heating the pressure reducing unit 2 is arranged in the cavity of the processing box 1;

[0026] The uniform heating mechanism 5 includes a motor 502 and a heating rod 501. The side wall of the heating rod 501 is fixedly connected to the inner wall of the processing box 1. The outer wall of the motor 502 is fixedly connected to the bottom end of the processing box 1. The output end of the motor 502 is fixedly connected to a rotating shaft 503. The outer wall of the rotating shaft 503 penetrates through the inner wall of the processing box 1 and is fixedly connected to a stirring blade 504 at the bottom end.

[0027] The cooling and liquefaction mechanism includes a cooling box 207 fixedly connected to the outer wall of the processing box 1, a water inlet pipe 208 is connected through the top of the cooling box 207, a circulation pipe 209 is connected through the lower side wall of the cooling box 207, a water pump 211 is installed on the outer wall of the circulation pipe 209, the other end of the circulation pipe 209 is connected through the top of the processing box 1, and a switch control component 3 for controlling the closing of the circulation pipe 209 is provided on the circulation pipe 209;

[0028] The switch control assembly 3 includes a fixed sleeve 301 fixedly connected to the outer wall of the circulation pipe 209, a micro servo motor 302 is fixedly connected to the side wall of the fixed sleeve 301, an output end of the micro servo motor 302 penetrates the inner wall of the circulation pipe 209 and is fixedly connected to a baffle 303, a side wall of the baffle 303 is in contact with the inner wall of the circulation pipe 209, and a temperature insulation layer is provided at the bottom end of the baffle 303;

[0029] The pressure reducing unit 2 includes a processing tube 201, which is arranged on the inner side of the processing box 1. The lower end of the processing tube 201 is fixedly connected with a pressure reducing chamber 203. The pressure reducing chamber 203 is arranged in a serpentine structure. The right side of the lower end of the pressure reducing chamber 203 is fixedly connected with a discharge pipe 204. A pressure reducing valve 205 is arranged on the outer side of the discharge pipe 204. A pressure reducing valve 202 is arranged on the outer side of the processing tube 201. A processing tube 206 is connected between the pressure reducing chamber 203 and the discharge pipe 204. A control valve 210 is arranged on the outer side of the processing tube 206. The processing tube 206 is partially located in the cooling box 207. Through the uniform heating mechanism 5, when the water in the treatment box 1 is heated, the heating rod 501 is started to heat the water, and at the same time, the motor 502 is started to drive the rotating shaft 503 to drive the stirring blade 504 to rotate, so as to stir the water. The water in the box is evenly heated by stirring, thereby ensuring the stability of pressurization; through the switch control component 3, when the water in the treatment box 1 is heated, the micro servo motor 302 is started to drive the baffle 303 to rotate, and the circulation pipe 209 is closed. The thermal insulation layer provided on the baffle 303 prevents the hot air in the treatment box 1 from being conducted to the cooling box 207 through the circulation pipe 209, thereby affecting the cooling effect, so that the cold water can cool the gasified gas and liquefy it and collect it, thereby avoiding waste.

[0030] Working principle: When in use, the staff first passes the LNG gas into the decompression chamber 203 through the processing pipe 201 to decompress it, and discharges it through the discharge pipe 204. When pressurizing, start the heating rod 501 to heat the water body, and at the same time start the motor 502 to drive the rotating shaft 503 to drive the stirring blade 504 to rotate, stirring the water body. Through stirring, the water body in the box is evenly heated, ensuring the stability of pressurization and preventing the LNG gas from freezing. When heating, start the micro servo motor 302 to drive the baffle 303 to rotate. The circulation pipe 209 is closed, and a thermal insulation layer is arranged on the baffle 303 to prevent the hot air in the treatment box 1 from being conducted to the cooling box 207 through the circulation pipe 209, thereby affecting the cooling effect. Part of the LNG gas is vaporized, and the vaporized LNG gas is discharged through the treatment pipe 206. At the same time, cold water is added to the cooling box 207 through the water inlet pipe 208 to liquefy the vaporized gas for easy recovery. The cold water enters the treatment box 1 again through the circulation pipe 209 for utilization. When in use, the water pump 211 is started to pump the cold water into the treatment box 1.

[0031] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A LNG gas pipeline network pressure reducing device, comprising: A processing box (1), characterized in that a decompression unit (2) is arranged inside the processing box (1), a cooling and liquefaction mechanism for cooling the decompression unit (2) is arranged on the outer wall of the processing box (1), and a uniform heating mechanism (5) for uniformly heating the decompression unit (2) is arranged inside the cavity of the processing box (1); The uniform heating mechanism (5) comprises a motor (502) and a heating rod (501); the side wall of the heating rod (501) is fixedly connected to the inner wall of the processing box (1); the outer wall of the motor (502) is fixedly connected to the bottom end of the processing box (1); the output end of the motor (502) is fixedly connected to a rotating shaft (503); the outer wall of the rotating shaft (503) penetrates through the inner wall of the processing box (1) and is fixedly connected to a stirring blade (504) at the bottom end; The cooling and liquefaction mechanism comprises a cooling box (207) fixedly connected to the outer wall of the processing box (1); a water inlet pipe (208) is connected through the top of the cooling box (207); a circulation pipe (209) is connected through the lower side wall of the cooling box (207); a water pump (211) is installed on the outer wall of the circulation pipe (209); the other end of the circulation pipe (209) is connected through the top of the processing box (1); and a switch control component (3) for controlling the closing of the circulation pipe (209) is provided on the circulation pipe (209).

2. The LNG gas pipeline network pressure reducing device according to claim 1, characterized in that: The switch control assembly (3) comprises a fixing sleeve (301) fixedly connected to the outer wall of the circulation pipe (209), a micro servo motor (302) being fixedly connected to the side wall of the fixing sleeve (301), and an output end of the micro servo motor (302) passing through the inner wall of the circulation pipe (209) being fixedly connected to a baffle (303).

3. The LNG gas pipeline network pressure reducing device according to claim 2, characterized in that: The side wall of the baffle (303) is in contact with the inner wall of the circulation pipe (209), and a temperature insulation layer is provided at the bottom end of the baffle (303).

4. The LNG gas pipeline network pressure reducing device according to claim 1, characterized in that: The decompression unit (2) comprises a processing tube (201) which is arranged on the inner side of the processing box (1); the lower end of the processing tube (201) is fixedly connected to a decompression chamber (203); the right side of the lower end of the decompression chamber (203) is fixedly connected to a discharge pipe (204); a decompression valve (205) is arranged on the outer side of the discharge pipe (204); a decompression valve (202) is arranged on the outer side of the processing tube (201); and a processing tube (206) is connected between the decompression chamber (203) and the discharge pipe (204).

5. The LNG gas pipeline network pressure reducing device according to claim 4, characterized in that: A control valve (210) is provided on the outer side of the second processing tube (206).

6. The LNG gas pipeline network pressure reducing device according to claim 4, characterized in that: The second processing tube (206) is partially located in the cooling box (207).

7. The LNG gas pipeline network pressure reducing device according to claim 6, characterized in that: The decompression chamber (203) is arranged in a serpentine structure.

8. The LNG gas pipeline network pressure reducing device according to claim 7, characterized in that: The left side of the treatment box (1) is fixedly connected with a water outlet pipe (4).

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