阅读说明：本技术 一种圆盘式气液两相流体均布装置 (Disc type gas-liquid two-phase fluid uniform distribution device ) 是由 鹿来运 花亦怀 张晓慧 姜益强 郑文科 田梦 刘凯月 汪耀龙 于 2020-06-11 设计创作，主要内容包括：本发明提供了一种圆盘式气液两相流体均布装置,包括一竖直设置的外壳筒体,在外壳筒体的内部设有一中心筒体,中心筒体的上端由一挡板密封,中心筒体的下部外壁上设置有一与外壳筒体的内壁紧固连接的环板,环板上均匀开设有多个均流孔；在外壳筒体与中心筒体之间均匀设置若干挡块,挡块内部中空且两端开口形成气相通道,若干挡块的底端均与环板固定连接,外侧壁均与外壳筒体的内壁固定连接,内侧壁均与中心筒体的外壁之间设有缝隙。本发明,外界气液相流体进入外壳筒体后,气相流体流入到气相通道中向下扩散流动,液相流体自由下落流入到环板上通过均流孔流出,使流体气液相均布通道相对独立,对含气率小的流体具有较好均布效果。(The invention provides a disc type gas-liquid two-phase fluid uniform distribution device which comprises a vertically arranged shell cylinder, wherein a central cylinder is arranged in the shell cylinder, the upper end of the central cylinder is sealed by a baffle, an annular plate which is tightly connected with the inner wall of the shell cylinder is arranged on the outer wall of the lower part of the central cylinder, and a plurality of uniform flow holes are uniformly formed in the annular plate; evenly set up a plurality of dogs between shell barrel and central barrel, the inside cavity of dog and both ends opening form the gaseous phase passageway, the bottom of a plurality of dogs all with crown plate fixed connection, the lateral wall all with the inner wall fixed connection of shell barrel, the inside wall all with be equipped with the gap between the outer wall of central barrel. According to the invention, after the external gas-liquid phase fluid enters the shell barrel, the gas phase fluid flows into the gas phase channel to diffuse and flow downwards, and the liquid phase fluid freely falls and flows into the annular plate and flows out through the flow equalizing holes, so that the gas-liquid phase uniform distribution channel of the fluid is relatively independent, and the gas-liquid phase uniform distribution channel has a good uniform distribution effect on the fluid with a small gas content.)

1. A disc type gas-liquid two-phase fluid uniform distribution device is characterized in that: the device comprises a vertically arranged shell cylinder (1), wherein a central cylinder (2) is arranged inside the shell cylinder (1), the upper end of the central cylinder (2) is sealed by a baffle (7), an annular plate (3) which is tightly connected with the inner wall of the shell cylinder (1) is arranged on the outer wall of the lower part of the central cylinder (2), and a plurality of uniform flow holes (31) are uniformly formed in the annular plate (3); evenly set up a plurality of dogs (4) between shell barrel (1) and central barrel (2), dog (4) inside cavity and both ends opening form gaseous phase passageway (5), the bottom of a plurality of dogs (4) all with crown plate (3) fixed connection, the lateral wall of a plurality of dogs (4) all with the inner wall fixed connection of shell barrel (1), be equipped with the gap between the inside wall of a plurality of dogs (4) all and the outer wall of central barrel (2).

2. The disc-type gas-liquid two-phase fluid uniform distribution device according to claim 1, characterized in that: the height of the stop block (4) is lower than that of the central cylinder (2).

3. The disc-type gas-liquid two-phase fluid uniform distribution device according to claim 1, characterized in that: the top end of the shell cylinder (1) is connected with a two-phase flow inlet pipe (6) extending downwards.

4. The disc-type gas-liquid two-phase fluid uniform distribution device according to claim 1, characterized in that: the flow equalizing hole (31) is a round hole, a square hole or a strip seam type hole.

5. The disc-type gas-liquid two-phase fluid equispaced device of any one of claims 1 to 4, wherein: the stop block is of a cuboid structure.

6. The disc-type gas-liquid two-phase fluid uniform distribution device according to claim 5, characterized in that: the width of the gas phase channel (5) is 1-2cm, and the sizes of gaps between the inner side walls of all the stop blocks (4) and the outer wall of the central cylinder (2) are the same and are 1-2 cm.

Technical Field

The invention belongs to the technical field of fluid uniform distribution, and particularly relates to a disc type gas-liquid two-phase fluid uniform distribution device.

Background

As an important component of energy development in China, related research on storage and transportation modes of natural gas is gradually being carried out. The offshore natural gas is transported back to the land after being exploited and liquefied to become an important aspect of natural gas storage and transportation. The coiled pipe type heat exchanger is one of main devices for liquefying natural gas, has the characteristics of high heat exchange efficiency and easy large-scale production, and is suitable for liquefying the offshore natural gas. However, the special working conditions on the sea have great influence on the heat exchange performance of the wound tube heat exchanger, and the outstanding phenomenon is that the uneven distribution of the shell pass material flow of the wound tube heat exchanger caused by sloshing forms bias flow, so that the overall heat exchange efficiency of the heat exchanger is reduced, and even the heat exchanger is seriously deviated from the design working condition. The uniform distributor is used as inlet equipment of a shell side space of the pipe-wound heat exchanger, and flow field distribution of incoming flow at the shell side is influenced, so that the efficiency of the heat exchanger and the liquefaction effect of natural gas are influenced. However, the existing gas-liquid two-phase distribution structure suitable for the tubular heat exchanger has fewer forms, mainly carries out uniform distribution on a liquid phase, and involves fewer uniform distribution on a gas phase. The liquid phase uniformity is influenced to a certain extent by the uneven flow of the gas phase in the space, and the uniform distribution effect of the distribution structure on the gas phase and the liquid phase is weakened.

Disclosure of Invention

In view of the above, the present invention aims to provide a disc-type gas-liquid two-phase fluid distribution device, after an external gas-liquid phase fluid enters an outer shell cylinder, the gas-phase fluid can flow into a gas-phase channel through a space between a central cylinder and an inner wall of the outer shell cylinder to diffuse and flow downwards, and a liquid-phase fluid freely falls and flows into an annular plate to flow out through a flow equalizing hole, so that the gas-liquid phase distribution channel of the fluid is relatively independent, and the two phases are uniformly distributed in a flow space, and a good distribution effect is provided for the fluid with a small gas content.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a disc type gas-liquid two-phase fluid uniform distribution device comprises a vertically arranged shell cylinder body, wherein a central cylinder body is arranged inside the shell cylinder body, the upper end of the central cylinder body is sealed by a baffle, an annular plate fixedly connected with the inner wall of the shell cylinder body is arranged on the outer wall of the lower part of the central cylinder body, and a plurality of uniform flow holes are uniformly formed in the annular plate; evenly set up a plurality of dogs between shell barrel and the central barrel, the inside cavity of dog and both ends opening form the gaseous phase passageway, the bottom of a plurality of dogs all with crown plate fixed connection, the lateral wall of a plurality of dogs all with the inner wall fixed connection of shell barrel, be equipped with the gap between the inside wall of a plurality of dogs and the outer wall of central barrel.

Further, the height setting that highly is less than the central barrel of dog.

Furthermore, a two-phase flow inlet pipe extending downwards is connected above the wall surface of the shell cylinder.

Furthermore, the flow equalizing holes are round holes, square holes or slotted holes.

Furthermore, the stop block is of a cuboid structure.

Furthermore, the width of the gas phase channel is 1-2cm, and the sizes of gaps between the inner side walls of all the stop blocks and the outer wall of the central cylinder are the same and are 1-2 cm.

Compared with the prior art, the disc type gas-liquid two-phase fluid uniform distribution device has the following advantages:

1. the invention has the advantages that the central cylinder is arranged in the shell cylinder, the annular plate fixedly connected with the inner wall of the shell cylinder is arranged on the outer wall of the lower part of the central cylinder, the stop block for reducing the influence of shaking on the uniformity is arranged between the central cylinder and the shell cylinder, the stop block is hollow and has two openings at two ends to form the gas phase channel, so that after external gas-liquid phase fluid enters the shell cylinder, the gas phase fluid can diffuse and flow downwards through the gas phase channel, the liquid phase fluid freely falls down to flow into the region between the central cylinder and the shell cylinder and finally flows out through the uniform flow holes in the annular plate.

2. The invention can make the liquid phase fluid uniformly flow out because the ring plate is provided with a plurality of uniformly distributed flow equalizing holes.

3. According to the invention, the plurality of stop blocks which enable the cylinder bodies to be tightly connected are uniformly arranged between the shell cylinder body and the central cylinder body at intervals, so that a cofferdam partition effect can be realized on liquid phase fluid under a sloshing condition, meanwhile, the stop blocks are hollow and have openings at two ends to form gas phase channels, the uniformly arranged gas phase channels can ensure the uniform communication of the gas phase fluid, and meanwhile, the function of uniformly distributing the gas phase and the liquid phase in a space under the sloshing condition is realized.

4. The invention adopts an integrated design, has no movable part, simple and compact structure and low manufacturing cost.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a perspective view of a disc-type gas-liquid two-phase fluid equispaced device according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a bottom cross-sectional structure of a disc-type gas-liquid two-phase fluid equispaced device according to an embodiment of the present invention.

Description of reference numerals:

1-shell cylinder, 2-central cylinder, 3-annular plate, 31-uniform flow hole, 4-baffle, 5-gas phase channel, 6-two-phase flow inlet pipe and 7-baffle.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1-2, a disc-type gas-liquid two-phase fluid uniform distribution device comprises a vertically arranged shell cylinder 1, a central cylinder 2 is arranged inside the shell cylinder 1, the upper end of the central cylinder 2 is sealed by a baffle 7, an annular plate 3 fixedly connected with the inner wall of the shell cylinder 1 is arranged on the outer wall of the lower part of the central cylinder 2, and a plurality of uniform flow holes 31 are uniformly formed in the annular plate 3 and used for enabling liquid phase fluid to uniformly flow out; evenly set up a plurality of dogs 4 between shell barrel 1 and central barrel 2, dog 4 inside cavity and both ends opening form gaseous phase passageway 5, and dog 4 is used for separating the fender liquid phase fluid, weakens the influence of shaking the condition to the liquid phase homogeneity, and the bottom of a plurality of dogs 4 all with crown plate 3 fixed connection, the lateral wall of a plurality of dogs 4 all with shell barrel 1's inner wall fixed connection, the inside wall of a plurality of dogs 4 all with be equipped with the gap between central barrel 2's the outer wall to guarantee the balanced intercommunication of liquid phase fluid ability.

The height of the stop block 4 is lower than that of the central cylinder 2, so that the gas and the liquid can be well separated after the installation and the gas-liquid separation.

The top end of the shell cylinder body 1 is connected with a two-phase flow inlet pipe 6 which extends downwards and is used for enabling gas-liquid phase fluid to enter the uniform distribution device through the two-phase flow inlet pipe 6 and be uniformly distributed after being separated.

The flow equalizing hole 31 is a circular hole, a square hole or a slotted hole.

The check blocks 4 are of rectangular structures and are uniformly arranged on the ring plate 3, the width of the gas phase channel 5 is 1-2cm, and the sizes of gaps between the inner side walls of all the check blocks 4 and the outer wall of the central cylinder 2 are the same and are 1-2 cm.

When the gas-liquid separation device works, external gas-liquid phase fluid flows onto a baffle 7 at the top end of a central cylinder 2 through a two-phase flow inlet pipe 6 extending into a shell cylinder 1, liquid inclusion in the gas phase fluid is removed through gravity and inertia separation, liquid phase fluid freely falls along the outer wall of the central cylinder 2, flows into a space between the shell cylinder 1 and the central cylinder 2, uniformly flows out through the flow equalizing holes 31 in the annular plate 3, meanwhile, the gas phase fluid flows into a gas phase channel 5 through the two-phase flow inlet pipe 6, and freely diffuses to the lower space of the shell cylinder 1 together with the liquid phase fluid flowing out of the flow equalizing holes 31. When the working condition is shaken at sea, the stop block 4 can play a cofferdam and partition role on the liquid phase fluid, and meanwhile, the gap between the central barrel 2 and the stop block 4 ensures that the liquid phase fluid can be communicated in a balanced manner, so that the uniform distribution function of the fluid under the condition of shaking is realized.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.