Supercharging skid-mounted system for low-temperature liquefied natural gas

Abstract

The utility model discloses a low-temperature liquefied natural gas pressurization skid-mounted system which comprises a base, a pressurization assembly is arranged on the upper surface of the base, an output assembly is arranged on one side of the pressurization assembly, the pressurization assembly comprises a fixing plate, the fixing plate is fixedly connected to the upper surface of the base, and a motor is fixedly connected to the side wall of the fixing plate. The device has the advantages that the pressure of the liquefied natural gas is borne through the fixed cylinder, when the pressure in the fixed cylinder exceeds a certain limit, the liquefied natural gas pushes the conical block through the return pipe to be pushed away, and the conical block is driven to rotate through the return pipe, so that the liquefied natural gas is driven to rotate, and the pressure of the liquefied natural gas is increased. Liquefied natural gas in the fixed cylinder crosses the conical block to enter the pressure relief cylinder, so that the pressure of the liquefied natural gas in the fixed cylinder can be relieved, and the problem of liquefied natural gas leakage caused by overlarge pressure in the skid-mounted equipment is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of skid installation, in particular to a low-temperature liquefied natural gas pressurization skid installation system. Background Art

[0002] Skid-mounted equipment is an integrated equipment, usually composed of multiple components, which can be hoisted, moved and fixed on a skid as a whole. This equipment is characterized by compact structure, complete functions, easy installation, maintenance and transportation. It is widely used in industrial fields such as petroleum, chemical, electric power, and pharmaceuticals.

[0003] The application of existing skid-mounted systems in the natural gas industry is mainly reflected in their integrated characteristics, which can integrate natural gas liquefaction, storage and transportation. Liquefied natural gas can be pressurized through skid-mounted equipment, which ensures that liquefied natural gas can flow safely and efficiently in pipelines or storage tanks. However, liquefied natural gas is more dangerous. If the pressure of liquefied natural gas is too high, it is easy to cause liquefied natural gas leakage. Utility Model Content

[0004] The utility model aims to provide a low-temperature liquefied natural gas pressurization skid-mounted system to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-temperature liquefied natural gas boosting skid-mounted system, comprising a base, a boosting assembly is arranged on the upper surface of the base, and an output assembly is arranged on one side of the boosting assembly;

[0006] The boost assembly includes a fixed plate, which is fixedly connected to the upper surface of the base, a motor is fixedly connected to the side wall of the fixed plate, a rotating shaft is fixedly connected to the output end of the motor, a plurality of boost blades are fixedly sleeved on the surface of the rotating shaft, a boost cylinder is fixedly connected to the side wall of the fixed plate, a connecting pipe is fixedly connected to the outer wall of the boost cylinder, the other end of the connecting pipe is fixedly connected to a pressure-reducing cylinder, a fixing ring is fixedly sleeved on the inner wall of the pressure-reducing cylinder, a spring is clamped on one side of the pressure-reducing cylinder, the other end of the spring is fixedly connected to a cone block, the other end of the pressure-reducing cylinder is fixedly connected to a return pipe, an oil pipeline is fixedly connected to the outer wall of the pressure-reducing cylinder, a fixing seat is fixedly sleeved on the surface of the boost cylinder, and the fixing seat is fixedly connected to the upper surface of the base.

[0007] Preferably, the output assembly includes a support seat, which is fixedly connected to the upper surface of the base, a fixed cylinder is fixedly sleeved inside the support seat, an output connector is fixedly sleeved at one end of the fixed cylinder, and a connecting cylinder is fixedly connected to the other end of the fixed cylinder.

[0008] Preferably, the oil delivery pipe and the spring are respectively located on both sides of the fixing ring, and the spring is located between the fixing ring and the cone block.

[0009] Preferably, a plurality of grooves are provided on the conical surface of the conical block, and the outer wall diameter of the conical block is longer than the opening diameter of the reflux pipe.

[0010] Preferably, the reflux pipe is connected to the fixed cylinder, and the fixed cylinder is fixedly connected to the boost cylinder via a connecting cylinder.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the pressure of liquefied natural gas is borne by the fixed cylinder. When the pressure inside the fixed cylinder exceeds a certain limit, the liquefied natural gas pushes the cone block through the reflux pipe. After the cone block is pushed open, the liquefied natural gas in the fixed cylinder passes over the cone block and enters the pressure relief cylinder. In this way, the pressure of the liquefied natural gas inside the fixed cylinder can be reduced, effectively preventing the leakage of liquefied natural gas caused by excessive internal pressure of the skid-mounted equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 The cross-sectional structure of the utility model is shown in FIG. Figure 1 ;

[0014] Figure 3 The cross-sectional structure of the utility model is shown in FIG. Figure 2 ;

[0015] Figure 4 This is a schematic diagram of the internal structure of the pressure relief cylinder of the utility model;

[0016] Figure 5 It is a schematic diagram of the booster blade structure of the utility model.

[0017] In the figure: 1. base; 2. boost assembly; 21. fixed plate; 22. motor; 23. rotating shaft; 24. boost fan blade; 25. boost cylinder; 26. connecting pipe; 27. pressure relief cylinder; 28. fixing ring; 29. ​​spring; 210. cone block; 211. return pipe; 212. oil pipeline; 213. fixing seat; 3. output assembly; 31. support seat; 32. fixing cylinder; 33. output joint; 34. connecting cylinder. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-5 The utility model provides a technical solution: a low-temperature liquefied natural gas boosting skid-mounted system, comprising a base 1, a boosting assembly 2 is arranged on the upper surface of the base 1, and an output assembly 3 is arranged on one side of the boosting assembly 2;

[0020] The boost assembly 2 includes a fixed plate 21, which is fixedly connected to the upper surface of the base 1, a motor 22 is fixedly connected to the side wall of the fixed plate 21, a rotating shaft 23 is fixedly connected to the output end of the motor 22, a plurality of boost blades 24 are fixedly sleeved on the surface of the rotating shaft 23, a boost cylinder 25 is fixedly connected to the side wall of the fixed plate 21, a connecting pipe 26 is fixedly connected to the outer wall of the boost cylinder 25, the other end of the connecting pipe 26 is fixedly connected to a pressure-reducing cylinder 27, a fixing ring 28 is fixedly sleeved on the inner wall of the pressure-reducing cylinder 27, a spring 29 is clamped on one side of the pressure-reducing cylinder 27, the other end of the spring 29 is fixedly connected to a cone block 210, the other end of the pressure-reducing cylinder 27 is fixedly connected to a return pipe 211, and the outer wall of the pressure-reducing cylinder 27 is fixedly connected to an oil pipeline 21 2. A fixed seat 213 is fixedly sleeved on the surface of the boosting cylinder 25. The fixed seat 213 is fixedly connected to the upper surface of the base 1. The liquefied natural gas is input into the pressure-relief cylinder 27 through the oil pipeline 212. The starting motor 22 drives the rotating shaft 23 to rotate. After the rotating shaft 23 rotates, the boosting blades 24 are driven to rotate. The boosting blades 24 drive the liquefied natural gas inside the boosting cylinder 25 to be squeezed, so that the liquefied natural gas is pressurized and then input into the connecting cylinder 34. When the pressure inside the fixed cylinder 32 exceeds a certain limit, the liquefied natural gas pushes the cone block 210 through the reflux pipe 211. After the cone block 210 is pushed open, the liquefied natural gas in the fixed cylinder 32 passes over the cone block 210 and enters the pressure-relief cylinder 27, so that the pressure of the liquefied natural gas inside the fixed cylinder 32 can be reduced.

[0021] The output assembly 3 includes a support seat 31, which is fixedly connected to the upper surface of the base 1. A fixed cylinder 32 is fixedly sleeved inside the support seat 31, one end of the fixed cylinder 32 is fixedly sleeved with an output joint 33, and the other end of the fixed cylinder 32 is fixedly connected with a connecting cylinder 34. Liquefied natural gas is input into the fixed cylinder 32 through the connecting cylinder 34, and then the liquefied natural gas is output through the output joint 33, and the pressure of the liquefied natural gas is borne by the fixed cylinder 32.

[0022] The oil delivery pipe 212 and the spring 29 are respectively located on both sides of the fixed ring 28, and the spring 29 is located between the fixed ring 28 and the cone block 210. The spring 29 squeezes the cone block 210 to block the return pipe 211. When the pressure of the liquefied natural gas exceeds the pressure borne by the spring 29, the liquefied natural gas can enter the pressure relief cylinder 27, and then the liquefied natural gas enters the booster cylinder 25 again for pressurized transportation.

[0023] A plurality of grooves are formed on the conical surface of the conical block 210 . The outer wall diameter of the conical block 210 is longer than the opening diameter of the reflux pipe 211 , so that the conical block 210 can completely block the reflux pipe 211 .

[0024] The return pipe 211 is connected to the fixed cylinder 32, and the fixed cylinder 32 is fixedly connected to the booster cylinder 25 through the connecting cylinder 34, so that the liquefied natural gas in the fixed cylinder 32 can be discharged through the return pipe 211 to prevent leakage caused by excessive pressure in the fixed cylinder 32.

[0025] Specifically, when using the utility model, first, liquefied natural gas is input into the pressure-relief cylinder 27 through the oil pipeline 212, and the motor 22 is started to drive the rotating shaft 23 to rotate. After the rotating shaft 23 rotates, it drives the booster blades 24 to rotate. The booster blades 24 drive the liquefied natural gas inside the booster cylinder 25 to be squeezed, so that the liquefied natural gas is pressurized and then input into the connecting cylinder 34. The liquefied natural gas is input into the fixed cylinder 32 through the connecting cylinder 34, and then the liquefied natural gas is output through the output joint 33. The pressure of the liquefied natural gas is borne by the fixed cylinder 32. When the pressure inside the fixed cylinder 32 exceeds a certain limit, the liquefied natural gas pushes the cone block 210 through the reflux pipe 211. After the cone block 210 is pushed open, the liquefied natural gas in the fixed cylinder 32 passes over the cone block 210 and enters the pressure-relief cylinder 27. In this way, the pressure of the liquefied natural gas inside the fixed cylinder 32 can be reduced, and the leakage of liquefied natural gas caused by excessive internal pressure of the skid-mounted equipment can be effectively prevented.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-temperature liquefied natural gas boosting skid-mounted system, comprising a base (1), a boosting assembly (2) being arranged on the upper surface of the base (1), and an output assembly (3) being arranged on one side of the boosting assembly (2); Features: The boost assembly (2) comprises a fixed plate (21), the fixed plate (21) being fixedly connected to the upper surface of the base (1), a motor (22) being fixedly connected to the side wall of the fixed plate (21), a rotating shaft (23) being fixedly connected to the output end of the motor (22), a plurality of boost blades (24) being fixedly sleeved on the surface of the rotating shaft (23), a boost cylinder (25) being fixedly connected to the side wall of the fixed plate (21), a connecting pipe (26) being fixedly connected to the outer wall of the boost cylinder (25), and the other end of the connecting pipe (26) being fixedly connected to the A pressure-reducing cylinder (27) is connected, a fixing ring (28) is fixedly sleeved on the inner wall of the pressure-reducing cylinder (27), a spring (29) is clamped on one side of the pressure-reducing cylinder (27), the other end of the spring (29) is fixedly connected to a cone block (210), the other end of the pressure-reducing cylinder (27) is fixedly connected to a return pipe (211), the outer wall of the pressure-reducing cylinder (27) is fixedly connected to an oil delivery pipe (212), and a fixing seat (213) is fixedly sleeved on the surface of the boosting cylinder (25), and the fixing seat (213) is fixedly connected to the upper surface of the base (1).

2. A low-temperature liquefied natural gas pressurization skid-mounted system according to claim 1, characterized in that: The output assembly (3) comprises a support seat (31), the support seat (31) is fixedly connected to the upper surface of the base (1), a fixed cylinder (32) is fixedly sleeved inside the support seat (31), one end of the fixed cylinder (32) is fixedly sleeved with an output connector (33), and the other end of the fixed cylinder (32) is fixedly connected to a connecting cylinder (34).

3. The low-temperature liquefied natural gas pressurization skid-mounted system according to claim 1, characterized in that: The oil delivery pipe (212) and the spring (29) are respectively located on both sides of the fixing ring (28), and the spring (29) is located between the fixing ring (28) and the cone block (210).

4. The low-temperature liquefied natural gas pressurization skid-mounted system according to claim 1, characterized in that: A plurality of grooves are provided on the conical surface of the conical block (210), and the outer wall diameter of the conical block (210) is longer than the opening diameter of the reflux pipe (211).

5. The low-temperature liquefied natural gas pressurization skid-mounted system according to claim 1, characterized in that: The return pipe (211) is connected to the fixed cylinder (32), and the fixed cylinder (32) is fixedly connected to the boost cylinder (25) via the connecting cylinder (34).

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