CN107308670B

CN107308670B - Liquid diversion distribution head

Info

Publication number: CN107308670B
Application number: CN201710578350.XA
Authority: CN
Inventors: 潘云祥
Original assignee: Suzhou Zhuoqun Titanium Nickel Equipment Co ltd
Current assignee: Suzhou Zhuoqun Titanium Nickel Equipment Co ltd
Priority date: 2017-07-16
Filing date: 2017-07-16
Publication date: 2023-08-15
Anticipated expiration: 2037-07-16
Also published as: CN107308670A

Abstract

The invention relates to a liquid diversion distribution head, wherein the distribution head body is a hollow circular tube, and an annular first boss is arranged at the lower part of the outer wall of the hollow circular tube; the first boss is provided with a plurality of opening grooves, and the grooves extend downwards to the bottom of the pipe wall along the spiral of the outer wall of the first boss and the hollow circular pipe from the upper edge of the first boss for diversion. According to the liquid diversion distribution head, the contact area between fluid and the hollow circular tube body of the distribution head is increased by the diversion grooves extending in a spiral mode, heat dissipation is promoted, meanwhile, the contact area between the fluid and the hollow circular tube body of the distribution head is increased by the diversion grooves extending in a spiral mode, heat dissipation is promoted, meanwhile, liquid flowing down in a spiral mode is easy to uniformly form a film on the inner wall of the tube, the tube body is heated uniformly, and the influence of uneven heating of the tube body on the service life is avoided.

Description

Liquid diversion distribution head

Technical Field

The invention belongs to the technical field of part manufacturing, and particularly relates to a liquid diversion distribution head.

Background

In the prior art, instruments and devices related to liquid diversion distribution comprise a falling film evaporator and the like, and the distribution heads for liquid diversion are mostly uneven in heat dissipation and short in service life of liquid pipelines; in addition, devices such as drainage pipes are not provided with a distribution head, and only a conduit is used for drainage, so that great noise is brought during drainage, but no related devices can solve the problem in the prior art.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a liquid diversion distribution head.

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

the liquid diversion distribution head comprises a hollow circular tube, wherein an annular first boss is arranged at the lower part of the outer wall of the hollow circular tube; the first boss is provided with a plurality of opening grooves, and the grooves extend downwards to the bottom of the pipe wall along the spiral of the outer wall of the first boss and the hollow circular pipe from the upper edge of the first boss for diversion.

As a further improvement of the invention, the top of the hollow circular tube is provided with a plurality of openings for fluid distribution and flow control. The opening shape is preferably rectangular.

As a further improvement of the invention, a second boss is arranged below the boss, and the second boss is arranged around the hollow circular tube body and is in an annular bulge, and the outer diameter of the second boss is slightly larger than the outer diameter of the hollow circular tube; and the upper edge of the boss extends to the bottom of the pipe wall in a spiral manner along the pipe walls of the boss, the second boss and the hollow circular pipe. The size of the second boss is designed according to the size of the vertical pipes such as actual tubulars and drain pipes, the outer diameter of the second boss is only slightly larger than the outer diameter of the hollow circular pipe, the hollow circular pipe can be ensured to be tightly connected with the vertical pipe, and meanwhile water flow can flow downwards along the inner wall of the vertical pipe.

As a further improvement of the invention, the starting points of the grooves at the upper edge of the boss and the ending points extending to the bottom of the pipe wall are uniformly distributed at the edge of the pipe wall. The flow guide of the high-temperature liquid, the grooves distributed in a spiral shape can increase the fluid flow distance, the contact area of the fluid and the pipe body is increased, the heat dissipation is increased, and the heat can be further uniformly distributed by adding the grooves distributed uniformly.

As a further improvement of the invention, the distributing head is made of pure nickel. The pure nickel is high temperature resistant, and the service life of the distribution head can be prolonged by adopting the pure nickel, so that the distribution head is not easy to damage.

The invention also provides application of the liquid diversion distributing head in liquid diversion, the liquid diversion distributing head can be directly inserted into pipeline devices requiring diversion such as a falling film evaporator tube array, a corridor drain pipe and the like for use, and fluid can flow down in a spiral annular shape along with a groove and uniformly flow down along the inner walls of the tube array and the drain pipe to realize diversion.

The liquid diversion distribution head can be used for tubular heat exchange devices such as falling film evaporators, or drainage devices such as corridor sewer pipes; for the tubular heat exchange device, the spirally-extending flow guide grooves of the distributing head increase the contact area of fluid and the hollow circular tube body of the distributing head, so that heat dissipation is promoted, meanwhile, liquid flowing down spirally is easy to uniformly form a film on the inner wall of the tube, uniform heating of the tube body is facilitated, and the influence of uneven heating of the tube body on the service life is avoided; for devices such as a drain pipe, the liquid flowing down along the inner wall of the diversion pipeline device after the distribution head is used can uniformly flow down, so that the environmental noise is reduced.

Drawings

FIG. 1 is a schematic diagram of a front view of a liquid-guiding distribution head according to the present invention;

FIG. 2 is a schematic perspective view of the liquid guiding and distributing head shown in FIG. 1;

FIG. 3 is a schematic top view of the liquid-guiding distribution head shown in FIG. 1;

FIG. 4 is a schematic view of the distribution head and sleeve configuration of example 2;

FIG. 5 is a schematic view of the sleeve structures of embodiments 2 and 3;

fig. 6 is a schematic diagram of an application structure of the liquid diversion distribution head in the falling film evaporator in example 3.

Detailed Description

Example 1

The embodiment illustrates the specific structure of the liquid diversion distribution head.

The liquid diversion distribution head 1 as shown in fig. 1 and 2 has a main structure of a hollow circular tube 11, and a plurality of rectangular openings 15 are arranged at the top of the hollow circular tube 11 for controlling flow; the hollow circular tube body is provided with an annular first boss 12, and the first boss 12 is arranged around the hollow circular tube 11 body and is annular bulge; a second boss 14 is arranged below the first boss 12, the second boss 14 is arranged around the pipe body of the hollow circular pipe 11 and is in an annular bulge shape, and the outer diameter of the second boss is slightly larger than that of the hollow circular pipe 11; the first boss 12, the second boss 14 and the hollow circular tube 11 are provided with a plurality of grooves 13, and the grooves 13 extend from the upper edge of the first boss 12 to the grooves at the bottom of the tube wall in a spiral manner along the tube walls of the first boss 12, the second boss 14 and the hollow circular tube 11; the groove 13 extends from the upper edge of the first boss 12 to the bottom of the pipe wall along the pipe wall of the first boss 12 and the hollow circular pipe 11 in a spiral manner for guiding flow.

In this embodiment, the grooves 13 are uniformly distributed at the edge of the pipe wall at the starting point of the upper edge of the first boss 12 and the ending point extending to the bottom of the pipe wall; the grooves 13 extend in parallel with each other. In particular, as shown in fig. 3, in this embodiment, four grooves 13 are used, and the connection lines between the four starting points and the center of the hollow circular tube 11 are centrosymmetric, so that the heat is more uniformly distributed.

Example 2

The embodiment provides a specific application method of the liquid diversion distribution head.

The liquid diversion distributing head can be directly inserted into diversion pipelines such as a drain pipe, a tube array and the like for use, the distributing head is inserted into the vertical tube, liquid flows in from the groove 13, and spirally and uniformly enters the tube inserted by the distributing head, so that the liquid uniformly flows downwards along the inner wall of the vertical tube, and a film is formed on the inner wall of the tube. Thereby improving the heating efficiency of the heater (providing the evaporation amount of the heater). The drain pipe has the function of reducing noise. The liquid diversion distribution head can also expand the application range by adding additional structures such as a sleeve and the like.

As shown in fig. 4-5, a sleeve 2 structure is added outside the liquid diversion distribution head, the sleeve 2 is in a hollow circular tube shape, an annular inner boss 21 is arranged at the position corresponding to the first boss 12 on the inner wall of the sleeve, and the inner diameter of the annular inner boss 21 is attached to the outer diameter of the first boss 12; the top of the sleeve 2 is provided with a plurality of triangular openings 22, the upper end of the sleeve 2 is connected with the outer wall of the hollow round tube 11 of the distribution head 1 by spot welding, and the inner wall 23 of the lower part of the annular inner boss 21 of the sleeve 2 is slightly thicker than the inner wall 24 of the upper part of the annular inner boss; the lower end of the sleeve 2 is welded with the outer wall of the hollow circular tube 11 of the distribution head 1, and holes are reserved at the grooves 13 for diversion; the hollow circular tube 11 of the distribution head 1 and the longitudinal axis of the sleeve 2 are coaxial.

The structure formed by the liquid diversion distribution head 1 and the sleeve 2 can be directly used in a tubular heat exchange device such as a falling film evaporator and the like, and is convenient to use. When the heater is applied, liquid flows into the gap between the two parts 1 and 2 through the triangular opening 22, uniformly enters the inner wall of the vertical pipe through the groove spiral on the distribution head 13, can be uniformly distributed on the inner wall of the vertical pipe, and forms a uniform film, so that the evaporation capacity is improved, and the heat exchange efficiency of the heater is improved.

Example 3

The embodiment provides a specific application of the liquid diversion distribution head in a falling film evaporator.

As shown in fig. 6, where 3 is the tube sheet structure in a falling film evaporator. The falling film evaporator comprises a distribution head 1, a pipe sleeve 2, a pipe plate 3, a tube array 4 and an external thread pipe 41 arranged outside the upper end of the tube array 4;

the tube plate 3 is provided with a plurality of through holes, the tube array 4 is inserted into the through holes and connected with the tube plate 3, and the outer part of the upper end of the tube array is provided with an external thread tube 41;

the specific structure of the distribution head 1 is as described in example 1.

The specific structure of the sleeve 2 is shown in fig. 5, the sleeve 2 is wrapped outside the distribution head 1 and is in a hollow circular tube shape, an annular inner boss 21 is arranged at the position, corresponding to the first boss 12, of the inner wall of the sleeve 2, and the inner diameter of the inner boss 21 is attached to the outer diameter of the first boss 12;

the upper end of the sleeve 2 is in spot welding connection with the outer wall of the hollow circular tube 11 of the distribution head 1, and a plurality of triangular openings 22 are formed in the top of the sleeve 2; the inner wall of the lower part of the annular inner boss 21 of the sleeve 2 is tightly attached to the outer wall of the external threaded pipe 41, so that the annular inner boss 21, the first boss 12 and the external threaded pipe 41 are tightly connected;

the hollow circular tube 11, the sleeve 2 and the longitudinal axis of the tube array 4 of the distribution head 1 are coaxial.

The external thread pipe is adopted for fixation, compared with the embodiment 2, the liquid flows into the gap between the two parts 1 and 2 from the triangular opening 22 when the device is used, uniformly enters the inner wall of the vertical pipe through the groove spiral of the distribution head 13, and can be uniformly distributed on the inner wall of the vertical pipe to form a uniform film, thereby improving the evaporation capacity and increasing the heat exchange efficiency of the heater.

Claims

1. The liquid diversion distribution head is characterized in that the distribution head main body is a hollow circular tube, and an annular first boss is arranged at the lower part of the outer wall of the hollow circular tube;

an annular second boss is arranged below the first boss, and the second boss is arranged around the hollow circular tube body, and the outer diameter of the second boss is slightly larger than that of the hollow circular tube;

the first boss is provided with a plurality of open grooves, and the grooves extend downwards from the upper edge of the first boss along the first boss, the second boss and the outer wall of the hollow circular tube in a spiral manner to the bottom of the tube wall for diversion; the grooves are uniformly distributed at the edge of the pipe wall at the starting point of the upper edge of the first boss and the ending point extending to the bottom of the pipe wall; the grooves are parallel to each other in the extending direction;

the distributing head is made of pure nickel.

2. The dispensing head of claim 1 wherein the hollow round tube has openings at the top thereof.

3. The dispensing head of claim 2 wherein the hollow round tube top opening is rectangular.

4. Use of a distribution head according to any of claims 1-3 for liquid diversion.