CN215952288U

CN215952288U - Liquid phase fluid uniform distribution device

Info

Publication number: CN215952288U
Application number: CN202122588771.5U
Authority: CN
Inventors: 祁珂; 程香
Original assignee: Sichuan Air Separation Plant Group Co ltd
Current assignee: Sichuan Air Separation Plant Group Co ltd
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-03-04
Anticipated expiration: 2031-10-27

Abstract

The utility model provides a liquid phase fluid uniform distribution device, and aims to solve the problems of difficulty in manufacturing and nonuniform distribution of an existing distributor. The device includes: the upper part of the central cylinder corresponds to the inlet of the pipe-wound heat exchanger, and the lower part of the central cylinder is internally provided with a sealing plate; the distributor is arranged at the lower part of the central cylinder, is communicated with the upper part of the central cylinder sealing plate and is used for uniformly distributing the shell-side liquid phase fluid; wherein the dispenser includes: one end of the distribution arm is communicated with the central cylinder, and the other end of the distribution arm is provided with a sealing cover; the bottom of the annular pipe is uniformly distributed with a plurality of spraying holes in the circumferential direction, and the annular pipe is positioned below the distribution arm and is coaxial with the central cylinder; and the connecting pipe is communicated with the distribution arm and the annular pipe. The device can evenly distribute liquid phase fluid, and has simpler manufacture and installation and easier control of precision.

Description

Liquid phase fluid uniform distribution device

Technical Field

The utility model relates to the technical field of wound tube type heat exchangers, in particular to a liquid phase fluid uniform distribution device.

Background

The coiled pipe type heat exchanger has the characteristics of compact structure, good bearing performance, strong thermal compensation capability and the like, and is widely applied to petrochemical industry, coal chemical industry and large-scale natural gas liquefaction devices. The entrance of the coiled heat exchanger is usually provided with a shell side medium distributor to ensure that the shell side medium is uniformly distributed to enter the heat exchange section, so as to realize uniform and efficient heat exchange.

As shown in fig. 1 and 2, the conventional "ring-tube type" distributor mainly comprises a distribution arm 210 and a plurality of non-full-circle ring-shaped tubes 220a communicated with the distribution arm 210, wherein a shell-side medium enters the non-full-circle ring-shaped tubes 220a from the distribution arm 210, and is uniformly distributed through an opening 221a on the lower side of the distribution arm 210 and an opening 221a on the lower side of the non-full-circle ring-shaped tubes 220a, so that a good uniform distribution effect of the shell-side medium can be achieved. However, in the existing 'ring tube type' distributor, a plurality of non-full-circle ring tubes 220a are required to be welded on the distribution arm 210 during manufacturing and assembly, the design requirement is met, a good distribution effect is achieved, and the problems of high processing precision requirement and complex processing operation process exist; and when the shell side medium is distributed, the density of the liquid phase fluid sprayed and distributed below the distribution arm 210 and the density of the liquid phase fluid sprayed and distributed below the non-full-circle annular pipe 220a are different, so that the problem of uneven distribution exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems of difficult manufacture and uneven distribution of the existing 'ring tube type' distributor, and provides a liquid phase fluid uniform distribution device which can uniformly distribute liquid phase fluid and has simpler manufacture and easier control on precision.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a liquid phase fluid equipartition device, installs in the entrance of wound tube heat exchanger for shell side liquid phase fluid distributes, includes:

the upper part of the central cylinder corresponds to the inlet of the pipe-wound heat exchanger, and the lower part of the central cylinder is internally provided with a sealing plate;

the distributor is arranged at the lower part of the central cylinder, is communicated with the space above the central cylinder sealing plate and is used for uniformly distributing the shell-side liquid phase fluid;

wherein the content of the first and second substances,

the dispenser includes:

one end of the distribution arm is communicated with the central cylinder, and the other end of the distribution arm is provided with a sealing cover;

the bottom of the annular pipe is uniformly distributed with a plurality of spraying holes in the circumferential direction, and the annular pipe is positioned below the distribution arm and is coaxial with the central cylinder;

and the connecting pipe is communicated with the distribution arm and the annular pipe.

In one embodiment of the present application, the distribution arm includes at least 2 distribution arms, which are radially disposed along the central cylinder and uniformly distributed along the circumferential direction of the central cylinder, and are located in the same plane.

In an embodiment of the application, the annular pipe comprises a plurality of different annular diameters, the annular pipes are concentrically arranged, and the levelness deviation is within the range of 0 mm-10 mm.

In one embodiment of the application, each distribution arm is provided with at least 1 connecting tube connected to each ring tube.

In one embodiment of the present application, the connecting pipe is vertically disposed, one end of the connecting pipe is connected to the connecting hole at the bottom of the distribution arm, and the other end of the connecting pipe is connected to the connecting hole at the top of the ring-shaped pipe.

In one embodiment of the present application, the axial deviation between the connecting tube and the central cylinder is in the range of 0-10 °.

In one embodiment of the application, the spraying holes are vertically arranged, and the axial deviation of the spraying holes and the axial deviation of the central cylinder are within the range of 0-10 degrees.

In an embodiment of the application, the diameter of spraying hole is 1mm ~30mm, and is adjacent the centre-to-centre spacing of spraying hole is 2mm ~200 mm.

In one embodiment of the present application, the distribution arm, the connection pipe and the ring pipe have a circular, rectangular or oval cross-sectional shape.

In an embodiment of the present application, the connection pipe is a single pipe or a combined pipe, and the combined pipe is formed by detachably connecting multiple sections of pipe joints.

Compared with the prior art, the utility model has the beneficial effects that:

1. the liquid phase fluid uniform distribution device is provided with the central cylinder and the distributor, wherein the distributor comprises a distribution arm, an annular pipe and a connecting pipe, the annular pipe is arranged to be a whole circular ring and is connected with the distribution arm through the connecting pipe, and the spraying holes are uniformly distributed and arranged at the bottom of the annular pipe of the whole circular ring in the circumferential direction, so that liquid phase fluid entering the central cylinder can be uniformly distributed and sprayed out through the spraying holes at the bottom of the annular pipe, a distribution dead zone does not exist, and the liquid phase fluid is more uniformly distributed.

2. For the single annular pipe of whole ring, when processing and spraying the hole, the processing degree of difficulty is littleer, and the slope deviation is changeed and is controlled.

3. The installation position of each annular pipe is controlled to the length of accessible adjusting connection pipe, makes each annular pipe be located same horizontal plane, satisfies the assembly accuracy requirement more easily, and the assembly degree of difficulty is lower, and work load is less.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic sectional structure diagram of a liquid phase fluid uniform distribution device in the prior art.

Fig. 2 is a schematic bottom view of a prior art liquid phase fluid uniform distribution device.

FIG. 3 is a schematic sectional view of the liquid phase fluid uniform distribution device of the present invention.

FIG. 4 is a schematic sectional view taken along the line A-A in FIG. 3 according to the present invention.

FIG. 5 is a schematic cross-sectional view taken along the direction B-B in FIG. 3 according to the present invention.

FIG. 6 is a schematic cross-sectional view taken along the direction C-C in FIG. 3 according to the present invention.

FIG. 7 is a partial sectional structural view of the ring tube in the present invention.

Reference numerals:

100. a central barrel; 110. closing the plate;

200. a dispenser; 210. a dispense arm; 211. sealing the cover; 220. an annular tube; 221. spraying holes; 230. a connecting pipe; 231. connecting holes;

220a, a non-full circular ring-shaped pipe; 221a, and forming an opening.

Detailed Description

In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate an orientation or positional relationship based on that shown in the drawings, or the orientation or positional relationship conventionally used in the use of the products of the present invention, or the orientation or positional relationship conventionally understood by those skilled in the art, are merely for convenience and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected or detachably connected or integrated; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the utility model. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 3 to 6, the embodiment of the present invention provides a liquid phase fluid uniform distribution device, which can be applied to a wound-tube heat exchanger and installed at an inlet of the wound-tube heat exchanger for uniform distribution of a shell-side liquid phase fluid. The device comprises a central cartridge 100 and a dispenser 200.

As shown in fig. 3, the upper part of the central cylinder 100 corresponds to the inlet of the coiled heat exchanger, and the shell-side liquid phase fluid entering from the inlet enters into the central cylinder 100; a closure plate 110 is provided in the lower portion of the central cartridge 100 to restrict the liquid phase fluid from continuing downward.

The distributor 200 is installed at the lower portion of the central cylinder 100 to communicate with the sidewall of the central cylinder 100, and the communication portion is located above the sealing plate 110, so that the shell-side liquid phase fluid introduced from the central cylinder 100 is uniformly distributed into the distributor 200.

Specifically, the dispenser 200 includes a dispensing arm 210, a ring pipe 220, and a connection pipe 230.

The dispensing arm 210 is disposed horizontally, one end of the dispensing arm is vertically connected to the sidewall of the central cylinder 100 and is communicated with the central cylinder 100, and the other end of the dispensing arm is provided with a cap 211 as a blind end. The liquid phase fluid in the central cartridge 100 enters the dispense arms 210 for dispensing.

The annular pipe 220 is a full circle ring, is horizontally arranged, is positioned below the distribution arm 210, and is coaxially arranged with the central cylinder 100, and a plurality of spraying holes 221 are uniformly distributed at the bottom of the annular pipe 220 along the circumferential direction.

The distribution arm 210 is communicated with the annular pipe 220 through a connecting pipe 230, and liquid phase fluid in the distribution arm 210 enters the annular pipe 220 through the connecting pipe 230 and is sprayed out from a spraying hole 221 at the bottom of the annular pipe 220 to realize uniform distribution.

As shown in fig. 4, the distribution arm 210 includes at least 2, and is disposed along the radial direction of the central cylinder 100, i.e., is vertically connected to the central cylinder 100; the 2 or more than 2 distribution arms 210 are uniformly distributed along the peripheral circumference of the central cylinder 100 and are located in the same plane. Ensuring that the liquid phase fluid is evenly distributed into distribution arm 210.

As shown in fig. 5 and 6, the annular tube 220 includes a plurality of annular tubes 220, and the diameter of each annular tube 220 is the same, but the diameters of the annular tubes are different; the plurality of annular tubes 220 are concentrically arranged and are arranged at equal intervals from the inside to the outside in the radial direction of the central cylinder 100. The number, diameter, spacing, etc. of the ring-shaped tubes 220 are adjusted according to the specific uniform distribution performance requirements of the wound tube heat exchanger. All the annular tubes 220 are positioned in the same plane, the maximum levelness allowable deviation is determined according to the maximum annular diameter of the annular tubes 220, the maximum annular diameter is increased, and the levelness allowable deviation is correspondingly increased. Generally, the horizontal deviation of the arrangement of the annular tube 220 should be controlled within the range of 0 mm-10 mm. The uniformity of liquid phase fluid distribution can be better ensured.

Each distribution arm 210 is provided with at least 1 connecting pipe 230 connected with each annular pipe 220, so that liquid phase fluid in each distribution arm 210 can uniformly enter each annular pipe 220.

Preferably, as shown in fig. 3 to 5, the connection hole 231 of the distribution arm 210 connected to the connection pipe 230 is provided at the bottom, and the connection hole 231 of the ring pipe 220 connected to the connection pipe 230 is provided at the top; the connection pipe 230 is a vertically arranged linear type pipe, the upper end of the connection pipe is connected with the connection hole 231 at the bottom of the distribution arm 210, and the lower end of the connection pipe is connected with the connection hole 231 at the top of the ring-shaped pipe 220. The liquid phase fluid is more smoothly distributed from the distribution arms 210 into the annular tube 220. Of course, the connection hole 231 may be provided at the side of the distribution arm 210 and the ring pipe 220.

The connecting pipe 230 vertically arranged is basically parallel to the central cylinder 100, and during manufacturing, the axial deviation between the axial direction of the connecting pipe 230 and the axial direction of the central cylinder 100 is controlled within the range of 0-10 degrees, so that the requirement on uniform distribution can be better met.

Correspondingly, as shown in fig. 6 and 7, the spraying holes 221 are also arranged vertically downward, and in order to meet the requirement of uniform distribution performance, the axial deviation between the axial direction of the holes and the axial direction of the central cylinder 100 is controlled within the range of 0-10 °.

The size and spacing of the spray holes 221 can be designed according to different uniform performance requirements of the coiled heat exchanger. Generally, the diameter of the holes of the spray holes 221 is 1mm to 30mm, and the center-to-center distance between adjacent spray holes 221 is 2mm to 200 mm.

The sectional shapes of the distribution arm 210, the connection pipe 230, and the ring pipe 220 may be circular, rectangular, or oval, etc. The distribution arm 210 and the annular pipe 220, which are preferably circular in cross-sectional shape, have a small dead zone for fluid flow and good uniform distribution performance. The dispense arm 210 and annular tube 220, which are rectangular in cross-section, are easier to machine, manufacture and install, with greater precision and control.

The connection pipe 230 may be a single pipe or a combined pipe, wherein the combined pipe is formed by detachably connecting multiple pipe sections. When the connection pipe 230 is a single pipe, the length of the entire connection pipe 230 is adjusted by cutting the length of the pipe, and the installation height of the ring-shaped pipe 220 is adjusted. The single tube has simple structure, high manufacturing speed and no extra leakage point; however, the overall length cannot be adjusted up and down, and only the length can be shortened, so that the cutting workload is large during installation. When the connection pipe 230 is a composite pipe, the multiple pipe sections can be connected by screw connection, groove connection, ferrule connection, socket connection, adhesion connection, clamping connection, and the like. The length of the connection pipe 230 can be freely adjusted, the installation workload is small, but the structure is complex, the manufacturing speed is slow, and additional leakage points may exist at the connection position.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a liquid phase fluid equipartition device, installs in the entrance of wound tube heat exchanger for shell side liquid phase fluid distributes, its characterized in that includes:

a central cylinder (100), the upper part of which corresponds to the inlet of the pipe-wound heat exchanger, and the lower part of which is provided with a sealing plate (110);

a distributor (200) installed at a lower portion of the central cylinder (100), communicating with a space above the closure plate (110) of the central cylinder (100), for uniformly distributing the shell-side liquid phase fluid;

wherein the content of the first and second substances,

the dispenser (200) comprises:

a distribution arm (210) having one end communicating with the central cylinder (100) and the other end provided with a cap (211);

the bottom of the annular pipe (220) is uniformly distributed with a plurality of spraying holes (221) in the circumferential direction, and the annular pipe (220) is positioned below the distribution arm (210) and is coaxial with the central cylinder (100);

a connection pipe (230) communicating the distribution arm (210) and the ring pipe (220).

2. The liquid phase fluid eventing device of claim 1, wherein the distribution arms (210) comprise at least 2, are arranged radially along the central cylinder (100), and are evenly distributed along a circumference of the central cylinder (100).

3. The liquid phase fluid uniform distribution device according to claim 2, characterized in that the annular tube (220) comprises a plurality of annular tubes with different diameters, and the plurality of annular tubes (220) are concentrically arranged.

4. The liquid phase fluid uniform distribution device according to claim 3, characterized in that each distribution arm (210) is provided with at least 1 connecting pipe (230) connected with each annular pipe (220).

5. The liquid phase fluid uniform distribution device according to claim 1 or 4, wherein the connecting pipe (230) is vertically arranged, one end of the connecting pipe is connected with the connecting hole (231) at the bottom of the distribution arm (210), and the other end of the connecting pipe is connected with the connecting hole (231) at the top of the annular pipe (220).

6. The liquid phase fluid uniform distribution device according to claim 5, characterized in that the axial deviation of the connecting pipe (230) and the central cylinder (100) is in the range of 0-10 degrees.

7. The liquid phase fluid uniform distribution device according to claim 1 or 6, wherein the spraying holes (221) are vertically arranged, and the axial deviation of the spraying holes and the axial deviation of the central cylinder (100) are within the range of 0-10 degrees.

8. The liquid phase fluid uniform distribution device according to claim 1, wherein the diameter of the spraying holes (221) is 1 mm-30 mm, and the center-to-center distance between adjacent spraying holes (221) is 2 mm-200 mm.

9. The liquid phase fluid evener of claim 1, wherein the cross-sectional shapes of the distribution arm (210), the connection pipe (230), and the annular pipe (220) are circular, rectangular, or elliptical.

10. The liquid phase fluid uniform distribution device according to claim 1, wherein the connecting pipe (230) is a single pipe or a combined pipe, and the combined pipe is formed by detachably connecting multiple sections of pipe joints.