KR101894415B1 - Pressure vessel - Google Patents

Abstract

A pressure vessel is provided according to one embodiment of the present invention.
According to an embodiment of the present invention, there is provided a pressure vessel comprising: a container portion formed with at least one flow pipe through which a fluid moves to one side and containing or discharging a fluid therein; a support portion rotatably coupled to the container portion; And a plurality of balance holding parts which are coupled to the additional supporting part and the other end are expanded and contracted downwardly and supported on the bottom surface and extendable and contractible independently of each other.

Description

Pressure vessel

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure vessel, and more particularly, to a pressure vessel that is easy to fasten a flow line to a flow tube.

Generally, a pressure vessel is a container for storing liquids such as Liquefied Natural Gas (LNG). It is cooled to a cryogenic temperature of -162 ° C to accommodate the liquid cargo whose volume is reduced to 1/6. It is designed to withstand cryogenic temperatures and high pressures. For example, the pressure vessel can be made of a metal material having a thick wall or an excellent low-temperature property. This pressure vessel has at least one flow tube formed on one side thereof, which can be detachably coupled to the flow line to store the liquid body in the pressure vessel or to provide a passage for discharging the liquid body to the outside of the pressure vessel.

The pressure vessel is fixed to the bottom surface of the installation site by the support, and then the flow tube and the bottom line are fastened. Conventionally, when the support is fixed and the shape of the bottom surface is not constant, It is difficult to keep the balance of the vessel and the flow pipe and the flow line are not easily fastened.

Korean Registered Patent No. 10-1359981 2014. 01. 28

SUMMARY OF THE INVENTION It is an object of the present invention to provide a pressure vessel which is easy to be fastened to a flow line and a flow tube.

The technical objects of the present invention are not limited to the technical matters mentioned above, and other technical subjects not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a pressure vessel including: a container portion having at least one flow pipe for moving a fluid on one side thereof and accommodating or discharging the fluid therein; And a plurality of balance holding portions, one end of which is coupled to the supporting portion, the other end of which is expanded and contracted downwardly and supported on the bottom surface, and which can be expanded and contracted independently of each other.

The pressure vessel may further include a bearing portion inserted between the container portion and the support portion to reduce frictional resistance between the container portion and the support portion.

Wherein the balance holding portion includes a cylinder portion fixed to the lower end of the support portion, a piston portion driven by the inside of the cylinder portion and having an end supported by the bottom surface, and a piston portion slidably supporting the piston portion by supplying fluid to the inside of the cylinder portion, And a fluid supply unit for moving the fluid.

The pressure vessel is connected to the balance holding part at the lower end of either the container part or the support part to measure an interval between the container part and the bottom surface or an interval between the support part and the bottom surface The sensor unit may further include a plurality of sensor units, and the number of the sensor units may be the same as the number of the balance holding units.

The flow tube may have a flange at its end to flange the flow line.

The support portion may be formed in a ring shape having a step formed on an inner surface thereof, and the container portion may be seated in the step.

According to the present invention, there is provided the balance holding portion which is extendable and retractable from the support portion rotatably coupled to the container portion, so that the balance of the pressure vessel can be maintained regardless of the shape of the bottom surface of the installation place. Accordingly, the flow line and the flow pipe can be easily fastened, and the unloading operation of the liquid cargo can proceed smoothly.

1 is a perspective view illustrating a pressure vessel according to an embodiment of the present invention.
Fig. 2 is a cross-sectional view of the pressure vessel of Fig. 1 cut in the longitudinal direction. Fig.
3 and 4 are operation diagrams for explaining the operation of the balance maintaining unit.
5 to 7 are operation diagrams for explaining the operation of the pressure vessel.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and the manner of achieving them, will be apparent from and elucidated with reference to the embodiments described hereinafter in conjunction with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, with reference to Figs. 1 to 4, a pressure vessel according to an embodiment of the present invention will be described in detail.

A pressure vessel according to an embodiment of the present invention is used to store fluids and may be installed between flow lines through which fluids move. Here, the fluid cargo may refer to a natural gas or a liquefied natural gas which is cooled to a cryogenic temperature of -162 ° C and reduced in volume by one sixth.

The pressure vessel is provided with a balancer capable of expanding and retracting from a support portion rotatably coupled to the container portion, so that the balance of the pressure vessel can be maintained regardless of the shape of the bottom surface of the installation place. Accordingly, the flow line and the flow pipe can be easily fastened, and the loading operation of the liquid cargo can smoothly proceed.

Hereinafter, the pressure vessel will be described in detail with reference to Figs. 1 to 4. Fig.

FIG. 1 is a perspective view showing a pressure vessel according to an embodiment of the present invention, FIG. 2 is a cross-sectional view cut along the longitudinal direction of the pressure vessel of FIG. 1, and FIGS. Fig.

The pressure vessel 1 according to the present invention includes a container portion 10, a support portion 20, and a balance portion 30.

The container unit 10 is a cylindrical member having a receiving space 10a formed therein. The container unit 10 includes at least one flow pipe 11 on one side thereof for receiving fluid or discharging the fluid to the outside. . The flow pipe 11 has a flange 11a formed at one end and communicating with the accommodation space 10a through the container portion 10 to form a flow line (see L in Fig. 5) As shown in FIG. Although the flow pipe 11 is formed on the side and the upper side of the container 10 in the drawing, the present invention is not limited thereto and the installation position and the number of the flow pipe 11 may be variously modified. The upper portion of the container portion 10 is formed in a gently inclined structure to minimize structural damage or deformation due to sloshing of the fluid. An annular hook 12 is coupled to the center of the outer side of the container portion 10, (Refer to C in Fig. 6). The support portion (20) is rotatably coupled to the lower portion of the container portion (10).

The supporting portion 20 is a ring-shaped member having a step formed on its inner side and is interposed between a balance holding portion 30 and a container portion 10 to be described later to connect the balance holding portion 30 and the container portion 10 . The container portion 10 is seated on the step formed on the inner side surface of the support portion 20 and can be held in the state of being fastened to the support portion 20 without being detached from the support portion 20 by expanding the lower end portion. The support portion 20 is rotatably coupled to the container portion 10 through the bearing portion 40. [

The bearing portion 40 is inserted between the container portion 10 and the support portion 20 to reduce the frictional resistance between the container portion 10 and the support portion 20. The bearing portion 40 is provided between the container portion 10 and the support portion 20, Can be disposed along the contact surface. That is, the container portion 10 and the support portion 20 can be relatively rotated by the bearing portion 40. For example, when the support portion 20 is fixed, the container portion 10 can be rotated from the support portion 20, and when the container portion 10 is fixed, the support portion 20 can be rotated from the container portion 10 It can rotate. 2, a plurality of bearing portions 40 may be formed between the side portion of the container portion 10 and the support portion 20, and between the lower portion of the container portion 10 and the support portion 20 And each of the bearing portions 40 rotates in the same direction and can help smooth rotation of the container portion 10 or the support portion 20. [

The balancing portion 30 is coupled to one side of the support portion 20.

The balancing portion 30 is for balancing the container portion 10 irrespective of the shape of the bottom surface F. The balancing portion 30 has one end coupled to the supporting portion 20 and the other end extending / As shown in FIG. The balance maintaining portions 30 may be formed as a plurality of balance holding portions 30, which are spaced apart from each other by a predetermined distance, and may be independently expanded and contracted. The balancing portions 30 are formed so as to be able to extend and contract independently of each other so that when the bottom surface F is not constant in shape and has a step or inclination, ) Can be maintained. Although the three balance holding portions 30 are illustrated as being coupled to the lower end of the support portion 20 in the drawing, the number of the balance holding portions 30 may be increased or decreased as needed.

The balancing portion 30 includes a cylinder portion 31, a piston portion 32, and a fluid supply portion 33, respectively.

The cylindrical portion 31 is a tubular member having a space formed therein, and the upper surface thereof can be fixedly coupled to the lower end of the support portion 20. [ However, the upper surface of the cylinder portion 31 is not limited to being fixedly coupled to the lower end of the support portion 20. For example, the side surface of the cylinder portion 31 may be fixedly coupled to the side portion of the support portion 20 . The cylinder portion 31 accommodates the piston portion 32 therein.

The piston portion 32 is driven inside the cylinder portion 31 and the end portion protrudes outside the cylinder portion 31 and can be supported on the bottom surface F. [ The piston portion 32 is driven by the fluid supply portion 33.

The fluid supply part 33 supplies fluid to the inside of the cylinder part 31 and slides the piston part 32 so that fluid such as compressed air is supplied from the outside or generated by itself and injected into the cylinder part 31 Or discharged. The fluid supply part 33 includes a first fluid supply pipe 33a and a second fluid supply pipe 33b.

The first fluid supply pipe 33a supplies fluid to the lower side of the piston portion 32 and the second fluid supply pipe 33b supplies fluid to the upper side of the piston portion 32. [ 3, when the interval A1 between the lower surface of the support portion 20 and the bottom surface F is relatively narrow, the piston portion 32 is moved through the first fluid supply pipe 33a, It is possible to supply the fluid to the lower side of the housing. When the fluid is supplied to the lower side of the piston portion 32, the piston portion 32 slides upward and is received inside the cylinder portion 31, And the bottom surface (F). At this time, the fluid accommodated in the upper side of the piston portion 32 can be discharged through the second fluid supply pipe 33b. 4, when the gap A2 between the lower surface of the support portion 20 and the bottom surface F is relatively wide, the upper portion of the piston portion 32 through the second fluid supply pipe 33b The fluid can be supplied to the fluid passage. When the fluid is supplied to the upper side of the piston portion 32, the piston portion 32 slides downward and protrudes to the outside of the cylinder portion 31, And the bottom surface (F). At this time, the fluid accommodated in the lower side of the piston portion 32 can be discharged through the first fluid supply pipe 33a.

However, the balance maintaining portion 30 is not limited to being stretched and contracted by the cylinder portion 31, the piston portion 32, and the fluid supply portion 33, and various structures Lt; / RTI > For example, the balance maintaining portion 30 may be formed in a gear structure and expanded or contracted. The balance maintaining portion 30 may have an end portion in contact with the bottom surface F and may have a joint structure so that the balance maintaining portion 30 may be partially rotated when the bottom surface F is inclined and brought into close contact with the bottom surface F. [

The sensor unit 50 may be coupled to the lower end of either the container unit 10 or the support unit 20. The sensor unit 50 measures the distance between the container unit 10 and the bottom surface F or between the support unit 20 and the bottom surface F. The sensor unit 50 is formed of a light sensor or an infrared sensor, (30). The number of the sensor units 50 may be the same as the number of the balance units 30. That is, as shown in FIGS. 1 and 2, when three balance holding portions 30 are coupled to the lower end of the support portion 20, the number of the sensor portions 50 may also be three. The distance between the container unit 10 and the bottom surface F measured by each sensor unit 50 or the distance between the support unit 20 The balance length of each balance holding portion 30 can be adjusted in accordance with the distance between the bottom surface F and the bottom surface F. This makes it possible to more easily maintain the balance of the container portion 10. [ The measured values from the respective sensor units 50 may be transmitted to a separate control unit (not shown), and the control unit analyzes the transmitted measurement values to determine the shape of the floor surface F, It is possible to select the stretching length of the portion 30.

The operation of the pressure vessel 1 will now be described in more detail with reference to Figures 5-7.

5 to 7 are operation diagrams for explaining the operation of the pressure vessel.

The pressure vessel 1 according to the present invention is provided with a balancer 30 capable of expanding and contracting from a support portion 20 rotatably coupled to the container portion 10 so that the pressure vessel 1 1) can be maintained. Therefore, the flow line L and the flow pipe 11 can be easily fastened, and the unloading operation of the liquid cargo can smoothly proceed.

FIG. 5 is a plan view showing a state in which a flow line and a flow pipe are aligned using a crane, FIG. 6 is a view showing a state in which a support portion is rotated corresponding to a bottom surface shape, and FIG. And the balance maintaining portion is seated.

The container unit 10 has flow pipes 11 projecting outward on both sides and a support unit 20 rotatably coupled to the lower part. A plurality of balance holding portions 30 are coupled to the lower end of the support portion 20, and the sensor portion 50 is coupled to each of the balance holding portions 30.

5 and 6, the crane C is connected to the hook 12 coupled to the center of the outer surface of the container unit 10, and the crane C is disposed apart from the pressure vessel 1 To move between the two flow lines (L). At this time, as shown in FIG. 5, the crane C can adjust its position by rotating itself so that the flow pipe 11 and the flow line L are located on the same line. When the flow tube 11 and the flow line L are located on the same line, each sensor portion 50 is spaced from the container portion 10 and the bottom surface F or between the support portion 20 and the bottom surface F, And the control unit compares the measured values and grasps the shape of the bottom surface (F). For example, when the measured values from the respective sensor units 50 are different from each other, it can be understood that the bottom surface F is a stepped or inclined shape. 6, when the bottom surface F is in a stepped or inclined shape, the support portion 20 is slid from the container portion 10 . At this time, the support portion 20 can be automatically rotated by the bearing portion 40 that receives the operation signal from the control portion, or manually rotated by the operator. The support portion 20 can smoothly rotate from the container portion 10 because the container portion 10 is connected to and fixed to the crane C as described above.

7, when the supporting portion 20 is rotated to select the seating position of the balance holding portion 30, the balancing holding portion 30 is extended downward. At this time, each of the balancing portions 30 may be elongated to have different lengths corresponding to the shape of the bottom surface F. When the balancing portions 30 are extended downward and balance of the support portion 20 and the container portion 10 is maintained, the crane C connected to the hook 12 is separated, 10 can be rotated to readjust the position of the flow tube 11 and the flow line L. [ At this time, since the support portion 20 is in a state of being fixed by the balance holding portion 30 seated on the bottom surface F, the container portion 10 can smoothly rotate from the support portion 20.

The flange 11a formed at the end of the flow pipe 11 and the flange formed at the end of the flow line L are coupled to each other in the inside of the container portion 10, The fluid accommodated in the container portion 10 can be discharged to the outside.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1: Pressure Vessel 10: Container
10a: accommodation space 11: flow tube
11a: Flange 12: Hook
20: support part 30: balance holding part
31: cylinder part 32: piston part
33: fluid supply part 33a: first fluid supply pipe
33b: second fluid supply pipe 40: bearing part
50:
C: Crane F: Floor surface
L: Flow line

Claims (6)

At least one flow conduit through which a fluid moves to one side and accommodates or discharges the fluid;
A support portion rotatably coupled to the container portion;
A plurality of balance holders each having one end coupled to the support portion and the other end extended and expanded downwardly and supported on the bottom surface,
A plurality of sensor parts coupled to the balance holding part at a lower end of any one of the container part and the support part to measure an interval between the container part and the bottom surface or an interval between the support part and the bottom surface; And
And a controller for receiving the measured values from the plurality of sensor units to determine the shape of the bottom surface and to select an extension length of the balance maintaining unit,
Wherein the number of the sensor portions is equal to the number of the balance holding portions. The pressure vessel according to claim 1, further comprising a bearing portion inserted between the container portion and the support portion to reduce frictional resistance between the container portion and the support portion. The apparatus according to claim 1,
A cylinder portion fixed to a lower end of the support portion,
A piston portion driven inside the cylinder portion and having an end supported on the bottom surface; And
And a fluid supply portion for supplying a fluid to the inside of the cylinder portion to slide the piston portion. delete 2. The pressure vessel of claim 1, wherein the flow tube is flanged at its end to flange the flow line. 2. The pressure vessel according to claim 1, wherein the support portion is formed in a ring shape having a step formed on an inner surface thereof, and the container portion is seated on the step.

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