Natural gas compressing and liquefying equipment

Abstract

The utility model discloses natural gas compression and liquefaction equipment which comprises a gas inlet pipe, a compression shell is fixedly connected to the right end of the gas inlet pipe, a compression plate is movably connected to the interior of the compression shell, a bottom rod is fixedly connected to the upper end of the compression plate, and a pneumatic telescopic rod is movably connected to the upper end of the bottom rod. Natural gas enters the compression shell through the gas inlet pipe, the compression plate moves downwards, the space where the gas is located is reduced, the internal pressure intensity is increased, the critical point of the gas rises along with the increase of the pressure intensity, the refrigeration pipe is movably connected to the outer side of the compression shell, a refrigerant is gasified in the refrigeration pipe to absorb heat, a large amount of heat is absorbed, and the temperature is reduced; after the temperature of the gas in the compression shell is reduced and reaches a critical point or below, the gas starts to be liquefied. Liquefied liquid natural gas passes through the communicating pipe, the rotating disc on the outer side of the communicating pipe is rotated, the rotating disc drives the rotary knob to rotate, then the baffle is rotated, the communicating pipe is opened, and liquid enters the storage tank to be stored through the communicating pipe.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of compressed liquefaction, in particular to a natural gas compressed liquefaction equipment. BACKGROUND

[0002] Natural gas refers to a kind of combustible gas existing in nature, is a fossil fuel, including the gas (including oilfield gas, gas field gas, mud volcano gas, coal-bed gas and biogenic gas etc.) formed in atmosphere, hydrosphere and lithosphere by various natural processes.The definition of "natural gas" commonly used by people for a long time is the narrow definition from the energy angle, refers to the mixture of hydrocarbon and non-hydrocarbon gas naturally contained in stratum.In petroleum geology, it usually refers to oilfield gas and gas field gas.Its composition is mainly hydrocarbon and contains non-hydrocarbon gas, so that yellow or blue flame is generated when burning.Natural gas changes from gaseous state to liquid state when cooled to about -162 DEG C under normal pressure, which is called liquefied natural gas (English Liquefied Natural Gas, abbreviated as LNG).The main component of LNG is methane, and there are small amounts of ethane, propane and nitrogen etc.Natural gas is further purified in the liquefaction process, and the methane purity is higher, almost no carbon dioxide and sulfide, and colorless, odorless, non-toxic.Liquefied natural gas (LNG) has become a new industry in China and is developing rapidly.Liquefied natural gas (LNG) technology is widely used in peak shaving device when natural gas is used in addition to solving the problems of transportation and storage.Natural gas is often not produced in industrial or population concentrated areas, so transportation and storage problems must be solved.The main component of natural gas is methane, and its critical temperature is 190.58K, which cannot be liquefied by pressurization at normal temperature.The liquefaction and storage technology of natural gas has gradually become an important advanced technology.Compared with natural gas, liquefied natural gas is convenient to store and transport, has good safety, less indirect investment, peak shaving effect in supply and good environmental protection.

[0003] When natural gas is compressed and liquefied, it cannot be compressed into liquid, and refrigeration operation can be carried out at the same time to compress it into liquid, so a high-efficiency liquefaction equipment combining pressurization and refrigeration operation is needed to liquefy natural gas. UTILITY MODEL CONTENT

[0004] The utility model discloses a natural gas compressed liquefaction equipment, can combine compression and refrigeration operation together, and compresses natural gas efficiently.

[0005] Preferably, the lower end of the communication pipe is movably connected with a storage tank.

[0006] Preferably, the lower end of the communication pipe is movably connected with a storage tank.

[0007] Preferably, the outer side of the compression shell is movably connected with a refrigeration pipe, the lower end of the refrigeration pipe is fixedly connected with a liquid pipe, and the upper end of the refrigeration pipe is fixedly connected with a gas pipe.

[0008] Preferably, the end of the liquid pipe away from the refrigeration pipe is movably connected with a lifting pump, and the right end of the lifting pump is movably connected with a conversion chamber.

[0009] Preferably, the right end of the conversion chamber is movably connected with two motors, the right end of the motor is movably connected with a rotating shaft, and the outer side of the rotating shaft is movably connected with a fan blade.

[0010] Compared with the prior art, the utility model has the advantages of:

[0011] The utility model discloses a compression shell, carries out the compression operation to natural gas, and the left side of the compression shell is fixedly connected with an air inlet pipe, and natural gas enters the compression shell through the air inlet pipe, the upper end of the compression shell is movably connected with a compression plate, the compression plate is tightly attached to the inner wall of the compression shell, guarantees the leakproofness, the upper end of the compression plate is fixedly connected with a bottom rod, the upper end of the bottom rod is movably connected with a pneumatic telescopic rod, natural gas enters the compression shell, the pneumatic telescopic rod operates, pushes down the bottom rod, the bottom rod pushes down the compression plate and moves, reduces the space of gas, makes the internal pressure increase, along with the increase of pressure, the critical point of gas rises, the temperature of gas that can liquefy rises, the compression plate compresses the volume of gas, the outer side of the compression shell is movably connected with a refrigeration pipe, the compression shell is the heat conduction material, can soon conduct temperature, the lower end of the refrigeration pipe is movably connected with a liquid pipe, the right end of the liquid pipe is movably connected with a lifting pump, the lifting pump lifts the refrigerant in the conversion chamber to the liquid pipe, enters the refrigeration pipe through the liquid pipe, the refrigerant gasifies and absorbs heat in the refrigeration pipe, absorbs a large amount of heat, makes the temperature reduce, the temperature of the gas in the compression shell reduces, reaches below the critical point, begins to liquefy. The refrigerant that becomes gas enters the conversion chamber through the gas pipe above the refrigeration pipe, liquefies into liquid in the conversion chamber, enters the refrigeration pipe again and gasifies and absorbs heat, and circulates in this way. The right end of the conversion chamber is connected with a motor, the right end of the motor is connected with a rotating shaft and a fan blade and forms a fan, blows out the hot air around and plays the role of heat dissipation. The liquid natural gas after liquefaction passes through the communication pipe, rotates the rotary disc outside the communication pipe, drives the knob to rotate, further rotates the baffle, opens the communication pipe, and the liquid passes through the communication pipe and is stored in the storage tank. Attached Figure Description

[0012] Fig. 1 This is a front structural diagram of a natural gas compression liquefaction device according to the present invention;

[0013] Fig. 2 This is a side view of a natural gas compression liquefaction device according to the present invention.

[0014] Fig. 3 This is a schematic diagram of the internal structure of a natural gas compression liquefaction device according to the present invention.

[0015] In the diagram: 1. Inlet pipe; 2. Compression housing; 3. Compression plate; 4. Base rod; 5. Pneumatic telescopic rod; 6. Connecting pipe; 7. Positioning ring; 8. Knob; 9. Baffle; 10. Rotary disc; 11. Storage tank; 12. Refrigeration pipe; 13. Liquid pipe; 14. Gas pipe; 15. Booster pump; 16. Conversion chamber; 17. Motor; 18. Shaft; 19. Fan blade. Detailed Implementation

[0016] 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.

[0017] Please see Figs. 1-3 This utility model provides a technical solution: including an air intake pipe 1, a compression housing 2 fixedly connected to the right end of the air intake pipe 1, a compression plate 3 movably connected inside the compression housing 2, a bottom rod 4 fixedly connected to the upper end of the compression plate 3, and a pneumatic telescopic rod 5 movably connected to the upper end of the bottom rod 4.

[0018] A connecting pipe 6 is fixedly connected to the lower end of the compression housing 2. A positioning ring 7 is movably connected to the outside of the connecting pipe 6. A knob 8 is movably connected inside the positioning ring 7. A baffle 9 is fixedly connected to the outside of the knob 8. A rotating disk 10 is fixedly connected to the right end of the knob 8.

[0019] The lower end of the connecting pipe 6 is movably connected to a storage tank 11 for storing the compressed liquid.

[0020] A refrigeration pipe 12 is movably connected to the outside of the compression housing 2. A liquid pipe 13 is fixedly connected to the lower end of the refrigeration pipe 12, and a gas pipe 14 is fixedly connected to the upper end of the refrigeration pipe 12.

[0021] A booster pump 15 is movably connected to the end of the liquid pipe 13 away from the refrigeration pipe 12, and a conversion chamber 16 is movably connected to the right end of the booster pump 15.

[0022] The two motors 17 are movably connected to the right end of the conversion chamber 16, the rotating shaft 18 is movably connected to the right end of the motor 17, and the fan blade 19 is movably connected to the outer side of the rotating shaft 18.

[0023] Working principle: the utility model can combine compression and refrigeration operation together, and efficiently compress natural gas. The utility model discloses a compression shell 2, and natural gas is compressed. The left side of the compression shell 2 is fixedly connected with an air inlet pipe 1, and natural gas enters the compression shell 2 through the air inlet pipe 1. The upper end of the compression shell 2 is movably connected with a compression plate 3, and the compression plate 3 is tightly attached to the inner wall of the compression shell 2 to ensure sealing. The upper end of the compression plate 3 is fixedly connected with a bottom rod 4, and the upper end of the bottom rod 4 is movably connected with a pneumatic telescopic rod 5. Natural gas enters the compression shell 2, and the pneumatic telescopic rod 5 operates to push the bottom rod 4 downward. The bottom rod 4 pushes the compression plate 3 to move downward, reduces the space of the gas, and increases the internal pressure. With the increase of the pressure, the critical point of the gas increases, the temperature at which the gas can be liquefied increases, and the volume of the gas is compressed by the compression plate 3. Meanwhile, a refrigeration pipe 12 is movably connected to the outer side of the compression shell 2. The compression shell 2 is made of heat-conducting material and can quickly conduct temperature. The lower end of the refrigeration pipe 12 is movably connected with a liquid pipe 13, and the right end of the liquid pipe 13 is movably connected with a lifting pump 15. The lifting pump 15 lifts the refrigerant in the conversion chamber 16 into the liquid pipe 13 and enters the refrigeration pipe 12 through the liquid pipe 13. The refrigerant gasifies and absorbs heat in the refrigeration pipe 12, absorbs a large amount of heat, reduces the temperature, and reduces the temperature of the gas in the compression shell 2. When the temperature is below the critical point, the gas begins to liquefy. The refrigerant gas becomes liquid in the conversion chamber 16 and enters the refrigeration pipe 12 to gasify and absorb heat. The cycle is repeated. The right end of the conversion chamber 16 is connected with a motor 17, and the motor 17 is connected with a fan formed by a rotating shaft 18 and a fan blade 19. The fan blows out the hot air around to dissipate heat. The liquefied liquid natural gas passes through the communication pipe 6, rotates the rotating disc 10 outside the communication pipe 6, rotates the knob 8, and then rotates the baffle 9 to open the communication pipe 6. The liquid passes through the communication pipe 6 and is stored in the storage tank 11.

[0024] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0025] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A natural gas compression liquefaction device, comprising an inlet pipe (1), characterized in that: The right end of the air intake pipe (1) is fixedly connected to a compression housing (2), and a compression plate (3) is movably connected inside the compression housing (2). A bottom rod (4) is fixedly connected to the upper end of the compression plate (3), and a pneumatic telescopic rod (5) is movably connected to the upper end of the bottom rod (4).

2. The natural gas compression liquefaction equipment according to claim 1, characterized in that: The lower end of the compression housing (2) is fixedly connected to a connecting pipe (6), the outside of the connecting pipe (6) is movably connected to a positioning ring (7), the inside of the positioning ring (7) is movably connected to a knob (8), the outside of the knob (8) is fixedly connected to a baffle (9), and the right end of the knob (8) is fixedly connected to a rotating disk (10).

3. The natural gas compression liquefaction equipment according to claim 2, characterized in that: The lower end of the connecting pipe (6) is movably connected to a storage tank (11).

4. The natural gas compression liquefaction equipment according to claim 1, characterized in that: A refrigeration pipe (12) is movably connected to the outside of the compression housing (2). A liquid pipe (13) is fixedly connected to the lower end of the refrigeration pipe (12), and a gas pipe (14) is fixedly connected to the upper end of the refrigeration pipe (12).

5. A natural gas compression liquefaction device according to claim 4, characterized in that: The liquid pipe (13) is movably connected to a booster pump (15) at the end away from the refrigeration pipe (12), and the booster pump (15) is movably connected to a conversion chamber (16) at the right end.

6. A natural gas compression liquefaction device according to claim 5, characterized in that: Two motors (17) are movably connected to the right end of the conversion chamber (16). A rotating shaft (18) is movably connected to the right end of the motor (17), and a fan blade (19) is movably connected to the outside of the rotating shaft (18).

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