CN217016139U - Low-temperature medium static mixing device using vacuum heat insulation - Google Patents

Abstract

The utility model discloses a low-temperature medium static mixing device using vacuum heat insulation, which comprises an inner pipe, an outer pipe sleeved outside the inner pipe and a mixer arranged in a cavity inside the inner pipe, wherein a vacuum cavity is arranged between the outer wall of the inner pipe and the inner wall of the outer pipe. The utility model solves the problems of excessive evaporation loss of the low-temperature medium and easy structural damage caused by low-temperature cold contraction due to excessive heat leakage when the static mixer in the prior art is applied to the working condition of mixing the low-temperature medium.

Description

Low-temperature medium static mixing device using vacuum heat insulation

Technical Field

The utility model relates to the technical field of vacuum heat insulation, in particular to a low-temperature medium static mixing device using vacuum heat insulation.

Background

The static mixer is a high-efficiency mixing device without moving parts, and the basic working mechanism of the static mixer is to change the flowing state of fluid in a pipe by using a mixing unit body fixed in the pipe so as to achieve the aims of good dispersion and full mixing of different fluids. The device is widely applicable and non-detachable.

The working principle of the static mixer is that fluid flows in a pipeline to impact various plate elements, the velocity gradient of laminar motion of the fluid is increased or turbulent flow is formed, the laminar flow is divided, moved and recombined, and in the turbulent flow, the fluid can generate violent vortex in the cross section direction besides the three conditions, and strong shearing force acts on the fluid to further divide and mix the fluid, and finally the fluid is mixed to form the required emulsion. So called "static" mixers, means that there are no moving parts in the pipe, only static elements.

However, in the prior art, the static mixer is mostly used for a normal temperature medium. When the static mixer is used for low-temperature media, due to the single-layer structure of the static mixer, the low-temperature media cause energy waste and cost rise due to excessive evaporation loss caused by heat leakage, and meanwhile, due to cold contraction of the mixer caused by low temperature, structural damage is easily caused when no external displacement compensation is carried out. The static mixer is applied to the problem that medium excessive loss is caused due to poor heat insulation performance under the working condition of low-temperature medium mixing, structural damage is easily caused due to low-temperature cold contraction, the static mixer cannot be applied to the low-temperature working condition, and the technical direction of product design is how to carry out better-effect heat insulation on the static mixer through a simple structure so as to solve the problem that the application of the static mixer under the low-temperature medium is.

Disclosure of Invention

In order to overcome the defects of the prior art, the utility model provides a low-temperature medium static mixing device using vacuum heat insulation, and solves the problems that the low-temperature medium excessive evaporation loss is caused by overlarge heat leakage and the structural damage is easily caused by low-temperature cold contraction when a static mixer in the prior art is applied to the working condition of mixing the low-temperature medium.

The technical scheme adopted by the utility model for solving the problems is as follows:

the utility model provides an use adiabatic cryogenic medium static mixing arrangement in vacuum, includes the inner tube, the outer tube of cover locating the inner tube outside, locates the blender of the inside cavity of inner tube, be equipped with the vacuum chamber between the outer wall of inner tube with the inner wall of outer tube.

The vacuum environment of the vacuum chamber effectively prevents heat from being dissipated to the outside from the mixer through the inner pipe and the outer pipe, the heat insulation effect is good, and the gasification loss of the low-temperature medium is greatly reduced when the low-temperature medium is fully mixed in the mixer; moreover, the utility model has simple structure and lower cost.

Preferably, the vacuum chamber is a chamber with a vacuum degree of less than 0.1 Pa.

The vacuum environment of high vacuum or ultra-high vacuum leads to better heat insulation effect and further reduces gasification loss.

Preferably, the vacuum chamber further comprises a heat insulating layer provided in the vacuum chamber.

The heat insulating layer is arranged to further reduce the heat loss.

As a preferable technical scheme, the heat insulation layer is cylindrical, and the heat insulation layer wraps the inner pipe.

This makes the inner tube fully by the insulating layer parcel, has increased adiabatic area of contact, has further improved adiabatic effect. The thermal insulation layer may preferably be wrapped around the inner pipe with a low thermal conductivity, radiation resistant insulation material.

As a preferable technical solution, a heat insulation support assembly is provided between the inner wall of the outer pipe and the heat insulation layer.

The heat insulation support component provides a support fixing function on one hand and has heat insulation performance on the other hand. The support is fixed and insulated at the same time, so that heat is effectively prevented from being dissipated through the heat insulation support assembly.

As a preferred technical scheme, two ends of the mixer, which are close to the orifice of the inner pipe, are connected with limiting devices.

Limiting device limits the blender position, prevents the position removal of blender, is favorable to improving position stability, makes and treats intensive mixing behind the mixed material through the blender.

As a preferable technical scheme, a displacement compensator is arranged in the cavity in the inner pipe.

The displacement compensator is used for displacement compensation of low-temperature shrinkage of the inner tube when a low-temperature medium passes through, meets the use safety of the mixer under the low-temperature medium, and improves the economy. It may be preferable to weld the displacement compensator to the inlet end of the mixer.

As a preferred technical solution, the displacement compensator is a ripple compensator.

The ripple compensator has good displacement compensation effect and small error.

As a preferred technical scheme, connecting flanges are installed at two ends of the inner pipe.

This facilitates the connection of the inner pipe to the medium conveying pipe or device.

As a preferred technical solution, the mixer is a static mixer.

The static mixer has no moving part, small vibration during working, easy later maintenance and good mixing effect, and obviously reduces the temperature gradient, the velocity gradient and the mass gradient of the fluid on the section of the pipeline.

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

(1) the vacuum environment of the vacuum chamber effectively prevents heat from being dissipated to the outside from the mixer through the inner pipe and the outer pipe, the heat insulation effect is good, and the gasification loss of the low-temperature medium is greatly reduced when the low-temperature medium is fully mixed in the mixer; moreover, the utility model has simple structure and lower cost;

(2) the vacuum chamber is a chamber with the vacuum degree lower than 0.1Pa, and the high-vacuum or ultrahigh-vacuum environment ensures that the heat insulation effect is better and the gasification loss is further reduced;

(3) the utility model also comprises a heat insulating layer arranged in the vacuum chamber, and the heat insulating layer is arranged to further reduce the heat loss;

(4) the heat insulation layer is cylindrical, and the inner pipe is wrapped in the heat insulation layer, so that the inner pipe is fully wrapped by the heat insulation layer, the contact area of heat insulation is increased, and the heat insulation effect is further improved;

(5) the heat insulation support component has the functions of supporting and fixing, and has heat insulation performance, so that heat is insulated while supporting and fixing, and heat is effectively prevented from being dissipated through the heat insulation support component;

(6) the limiting device limits the position of the mixer, prevents the position of the mixer from moving, is beneficial to improving the position stability, and ensures that substances to be mixed are fully mixed after passing through the mixer;

(7) the displacement compensator is used for the displacement compensation of low-temperature shrinkage of the inner pipe when a low-temperature medium passes through, meets the use safety of the mixer under the low-temperature medium, and improves the economy;

(8) the displacement compensator is a ripple compensator, and has good displacement compensation effect and small error;

(9) the connecting flanges are arranged at the two ends of the inner pipe, so that the inner pipe is conveniently connected with a medium conveying pipeline or equipment;

(10) the mixer is a static mixer, the static mixer has no moving part, small vibration during working, easy later maintenance and good mixing effect, and the temperature gradient, the velocity gradient and the mass gradient of the fluid on the section of the pipeline are obviously reduced.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a longitudinal sectional view of FIG. 1;

fig. 3 is a side view of fig. 1.

Reference numbers and corresponding part names in the drawings: 1. the device comprises an inner pipe, a 2 outer pipe, a 3 vacuum chamber, a 4 mixer, a 5 heat insulation support component, a 6 limit device, a 7 displacement compensator, a 8 connecting flange, a 9 equipment saddle, a 10 vacuumizing port, a 11 heat insulation layer.

Detailed Description

The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited to these examples.

Example 1

As shown in fig. 1 to 3, a low temperature medium static mixing device using vacuum insulation includes an inner tube 1, an outer tube 2 sleeved outside the inner tube 1, and a mixer 4 disposed in a cavity inside the inner tube 1, wherein a vacuum chamber 3 is disposed between an outer wall of the inner tube 1 and an inner wall of the outer tube 2.

The vacuum chamber 3 has a vacuum environment which effectively prevents heat from dissipating to the outside from the mixer 4 through the inner pipe 1 and the outer pipe 2, has a good heat insulation effect, and greatly reduces the gasification loss of the low-temperature medium when the low-temperature medium is fully mixed in the mixer 4; moreover, the utility model has simple structure and lower cost.

In a preferred embodiment, the vacuum chamber 3 is a chamber having a vacuum degree of less than 0.1 Pa.

The vacuum environment of high vacuum or ultra-high vacuum leads to better heat insulation effect and further reduces gasification loss.

Preferably, the heat insulating layer 11 is provided in the vacuum chamber 3.

The heat insulation layer 11 is arranged to further reduce the heat loss.

In a preferred embodiment, the heat insulating layer 11 is cylindrical, and the heat insulating layer 11 encloses the inner pipe 1.

This allows the inner pipe 1 to be sufficiently wrapped with the heat insulating layer 11, increasing the contact area of the heat insulation, further improving the heat insulating effect. The heat insulating layer 11 may be preferably wrapped around the inner pipe 1 using a low thermal conductivity, radiation resistant insulation material.

As a preferred technical solution, a heat insulation support assembly 5 is arranged between the inner wall of the outer pipe 2 and the heat insulation layer 11.

The heat insulation support assembly 5 provides a support fixing function and has heat insulation performance. The heat insulation is carried out while the support is fixed, and the heat is effectively prevented from being dissipated through the heat insulation support component 5.

As a preferable technical scheme, two ends of the mixer 4 close to the orifice of the inner tube 1 are connected with limiting devices 6.

Limiting device 6 limits 4 positions of blender, prevents the position removal of blender 4, is favorable to improving positional stability, makes and treats intensive mixing behind the mixed material through blender 4.

Example 2

As shown in fig. 1 to fig. 3, as a further optimization of embodiment 1, this embodiment includes all the technical features of embodiment 1, and in addition, this embodiment further includes the following technical features:

as a preferable technical solution, a displacement compensator 7 is arranged in the inner cavity of the inner pipe 1.

The displacement compensator 7 is used for the displacement compensation of low-temperature contraction generated by the inner pipe 1 when a low-temperature medium passes through, meets the use safety of the mixer 4 under the low-temperature medium, and improves the economical efficiency. It may be preferable to weld the displacement compensator 7 to the inlet end of the mixer 4.

As a preferred solution, the displacement compensator 7 is a ripple compensator.

The ripple compensator has good displacement compensation effect and small error.

As a preferable technical scheme, connecting flanges 8 are arranged at two ends of the inner pipe 1.

This facilitates the connection of the inner pipe 1 to a medium conveying pipe or device.

As a preferred technical solution, the mixer 4 is a static mixer.

The static mixer has no moving part, small vibration during working, easy later maintenance and good mixing effect, and obviously reduces the temperature gradient, the velocity gradient and the mass gradient of the fluid on the section of the pipeline.

Preferably, the utility model also has a device saddle 9 mounted under the outer pipe, carrying the weight of the whole device and securing it.

Preferably, the present invention also has a vacuum port 10 mounted on the outer tube 2.

As described above, the present invention can be preferably implemented.

While the utility model has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the utility model is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications, equivalent arrangements, and alternatives falling within the spirit and scope of the utility model as defined by the appended claims.

Claims (10)

1. The low-temperature medium static mixing device using vacuum heat insulation is characterized by comprising an inner pipe (1), an outer pipe (2) sleeved outside the inner pipe (1) and a mixer (4) arranged in a cavity inside the inner pipe (1), wherein a vacuum chamber (3) is arranged between the outer wall of the inner pipe (1) and the inner wall of the outer pipe (2).

2. A cryogenic medium static mixing device using vacuum insulation according to claim 1, characterised in that the vacuum chamber (3) is a chamber with a vacuum degree below 0.1 Pa.

3. A cryogenic medium static mixing device using vacuum insulation according to claim 2, further comprising an insulation layer (11) provided inside the vacuum chamber (3).

4. A cryogenic medium static mixing device using vacuum insulation according to claim 3, characterised in that the thermal insulation layer (11) is cylindrical and the thermal insulation layer (11) encloses the inner tube (1).

5. A static mixing device of cryogenic media insulated with vacuum according to claim 4, characterized in that an insulating support assembly (5) is provided between the inner wall of the outer pipe (2) and the insulating layer (11).

6. A static mixing device of low temperature medium using vacuum heat insulation as claimed in claim 5, characterized in that the two ends of the mixer (4) near the mouth of the inner tube (1) are connected with the limiting device (6).

7. A static mixing device of cryogenic media using vacuum insulation according to claim 6, characterized in that a displacement compensator (7) is provided in the inner cavity of the inner pipe (1).

8. A cryogenic medium static mixing device using vacuum insulation according to claim 7, characterised in that the displacement compensator (7) is a ripple compensator.

9. A static mixing device of cryogenic media using vacuum insulation according to claim 8, characterised in that the inner pipe (1) is fitted with connecting flanges (8) at both ends.

10. A cryogenic medium static mixing device using vacuum insulation according to any of claims 1 to 9, characterised in that the mixer (4) is a static mixer.

Images