CN218154894U

CN218154894U - Head heat preservation device of low-temperature Stirling cooler

Info

Publication number: CN218154894U
Application number: CN202221643140.7U
Authority: CN
Inventors: 不公告发明人
Original assignee: Ningbo Juxin Cryogenic Technology Co ltd
Current assignee: Ningbo Juxin Cryogenic Technology Co ltd
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-12-27
Anticipated expiration: 2032-06-29

Abstract

The utility model discloses a head heat preservation device of a low-temperature Stirling cooler, which comprises a shell, wherein the lower end of the shell is provided with a Stirling cooler shell insertion hole, and one side of the shell is provided with a wiring port; the cold conducting base is arranged in the inner cavity of the shell; the cold guide mounting ring is arranged on the lower side of the cold guide base and corresponds to the Stirling cooler shell insertion opening; the cold guide adapter is arranged on the upper side of the cold guide base, and the cold guide adapter further comprises a heat preservation cover which is arranged in the shell and covers the cold guide base, the cold guide mounting ring and the cold guide adapter. The utility model discloses simple structure has the multilayer and insulates against heat, and it is bigger to lead cold volume loss among the solution prior art, can't satisfy the problem of low temperature refrigeration needs.

Description

Head heat preservation device of low-temperature Stirling cooler

Technical Field

The utility model relates to a cold quick-witted field of stirling specifically is a head heat preservation device of cold machine of low temperature stirling.

Background

The cold guide system of the Stirling engine is a cold output system of the cold end of the Stirling engine, and is generally installed at the head of a Stirling cooler of the Stirling engine, although a heat preservation shell is arranged outside the Stirling engine, the loss of cold in the low-temperature operation process of the cold guide system is large along with the fact that the target refrigerating temperature of the Stirling cooler is lower and lower, the cold insulation requirement of 120 ℃ below zero cannot be met, and the Dewar design is expensive in use cost and complex in installation and manufacturing.

SUMMERY OF THE UTILITY MODEL

The utility model provides a head heat preservation device of cold machine of low temperature stirling, simple structure has the multilayer and insulates against heat, and it is bigger to lead cold volume loss in the current technique of solution, can't satisfy the problem that low temperature refrigeration needs.

In order to achieve the above object, the utility model provides a following technical scheme: the head heat preservation device of the low-temperature Stirling cooler comprises a shell, wherein a Stirling cooler shell insertion hole is formed in the lower end of the shell, and a wiring port is formed in one side of the shell; the cold conducting base is arranged in the inner cavity of the shell; the cold guide mounting ring is arranged on the lower side of the cold guide base and corresponds to the Stirling cooler shell insertion opening; lead cold adapter, install the upside at leading cold base, still include the cover that keeps warm, set up in the inside of shell, will lead cold base, lead cold collar and lead cold adapter and cover, cover the loss that can effectively prevent cold volume through the cover that keeps warm with leading cold part, mainly can prevent cold volume from the wire connection department discharge loss, the cover that keeps warm just constitutes the multilayer with the shell and insulates against heat the structure, makes head heat preservation device can satisfy the cold needs of leading under the low temperature.

Preferably, the heat-insulating cover is made of glass fiber, the glass fiber has a good heat-insulating effect, the process is simple, and the heat-insulating coefficient is low.

Preferably, the outer side wall and the top of the heat-insulating cover are tightly attached to the inner cavity of the shell, the heat-insulating cover with a relatively thick wall can be arranged to the maximum extent by tightly attaching the heat-insulating cover to the shell, and the two heat-insulating layers can prevent cold energy from being discharged from a gap between the heat-insulating cover and the shell.

Preferably, the shell is made of a polyurethane material, the polyurethane material is simple to form and has a good heat insulation effect, and the density of the shell can be larger, so that the heat insulation requirement is met.

Preferably, the cold guide adapter is provided with a cold guide pipe which penetrates through the side wall of the heat preservation cover and is led out from the wiring port, and a refrigerant flows in the cold guide pipe and can guide out cold on the cold guide base and the cold guide adapter along the cold guide pipe.

Preferably, the wiring port is filled with a heat insulation material, and the heat insulation material can further improve the heat insulation effect and reduce the loss of cold energy.

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

the heat insulation cover arranged inside covers the cold conducting component, so that the loss of cold quantity can be effectively prevented, and the heat insulation cover and the shell form a multilayer heat insulation structure, so that the head heat insulation device can meet the cold conducting requirement under low-temperature refrigeration at 120 ℃ below zero.

Drawings

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

fig. 2 is a structural diagram of the usage state of the present invention.

Reference numerals:

1. the Stirling cooler comprises a shell, 2, a heat preservation cover, 3, a cold conduction adapter, 4, a cold conduction base, 5, a cold conduction mounting ring, 6, a Stirling cooler shell insertion opening, 7, a wiring opening, 8, a heat preservation material, 9 and a cold conduction pipe.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1-2, the utility model discloses a solve among the prior art cold volume loss of leading is bigger, can't satisfy the problem that low temperature refrigeration needs, provide following technical scheme: a head heat preservation device of a low-temperature Stirling cooler comprises a shell 1, wherein a Stirling cooler shell insertion hole 6 is formed in the lower end of the shell 1, and a wiring port 7 is formed in one side of the shell 1; the cold guide base 4 is arranged in the inner cavity of the shell 1; the cold guide mounting ring 5 is arranged on the lower side of the cold guide base 4 and corresponds to the Stirling cooler shell insertion opening 6; lead cold adapter 3, install the upside at leading cold base 4, still include heat preservation cover 2, the setting is in the inside of shell 1, will lead cold base 4, lead cold collar 5 and lead cold adapter 3 and cover, cover the loss that can effectively prevent cold volume through heat preservation cover 2 with leading cold parts, mainly can prevent cold volume from 7 discharge losses of wiring mouth, heat preservation cover 2 and shell 1 just constitute the thermal-insulated structure of multilayer, make head heat preservation device can satisfy the cold needs of leading under the low temperature.

Specifically, the heat preservation cover 2 adopt glass fiber to make, glass fiber has good thermal-insulated effect, simple process moreover, and the adiabatic coefficient is than lower, can adopt the glass fiber that the adiabatic coefficient is 0.00035 to carry out cold press molding particularly, and lead cold collar 5 and lead cold base 4 and can adopt the aluminium alloy material that the heat conductivity is relatively good to make, cold volume conduction speed is fast. Meanwhile, the shell 1 is made of polyurethane materials, the polyurethane materials are simple to form and have good heat insulation effects, the density of the polyurethane materials can be larger, and the heat insulation requirements are met.

Wherein, the lower extreme of leading cold collar 5 is opened and is had the circular recess that the top is the arc surface for hold the head of the last casing of stirling, and the top of leading cold collar 5 is opened between two parties has the circular port, lead cold collar 5 on arrange the radial crack groove that extends to circular port department, lead cold collar 5 like this and just can contract, be used for pressing from both sides the head of tight last casing.

Preferably, the outer side wall and the top of the heat-insulating cover 2 are tightly attached to the inner cavity of the shell 1, the heat-insulating cover 2 with a relatively thick wall can be arranged to the maximum extent by tightly attaching the heat-insulating cover 2 to the shell 1, and the two heat-insulating layers can prevent cold energy from being discharged from a gap between the two heat-insulating layers.

In the present embodiment, in order to facilitate the transmission and output of the cooling capacity, the cold guiding adapter 3 is provided with a cold guiding pipe 9 penetrating through the side wall of the heat insulating cover 2 and leading out from the wiring port 7, and a cooling medium, preferably CO, is arranged in the cold guiding pipe 9 in a flowing manner ₂ The cold on the cold guide base 4 and the cold guide adapter 3 can be guided out along the cold guide pipe 9.

In order to further improve the heat preservation effect, the wiring port 7 is filled with a heat preservation material 8, the cold conduction pipe 9 penetrates through the heat preservation material 8, the heat preservation material 8 can reduce the loss of cold quantity, and the heat preservation material can also play a role in positioning and supporting the cold conduction pipe 9.

It should be noted that all directional indicators (such as up, down, left, right, front, and back) in the embodiments of the present invention are only used for explaining the relative position relationship between the components in a specific posture (as shown in the drawings), the motion condition, and the like, and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

Claims

1. A head warmer for a low temperature stirling cooler, comprising:

the Stirling cooler is characterized by comprising a shell (1), wherein a Stirling cooler shell insertion hole (6) is formed in the lower end of the shell (1), and a wiring port (7) is formed in one side of the shell (1);

the cold conducting base (4) is arranged in the inner cavity of the shell (1);

the cold guide mounting ring (5) is arranged on the lower side of the cold guide base (4) and corresponds to the Stirling cooler shell insertion opening (6);

lead cold adapter (3), install the upside at leading cold base (4), its characterized in that:

still including heat preservation cover (2), set up in the inside of shell (1), cover cold base (4), cold collar (5) and cold adapter (3) of leading.

2. A head warmer for a low temperature stirling cooler, according to claim 1, wherein: the heat preservation cover (2) is made of glass fiber.

3. A head warmer for a low-temperature stirling cooler, according to claim 1, wherein: the outer side wall and the top of the heat preservation cover (2) are tightly attached to the inner cavity of the shell (1).

4. A head warmer for a low-temperature stirling cooler, according to claim 1, wherein: the shell (1) is made of polyurethane materials.

5. A head warmer for a low temperature stirling cooler, according to claim 1, wherein: and a cold guide pipe (9) which penetrates through the side wall of the heat-insulating cover (2) and is led out from the wiring port (7) is arranged on the cold guide adapter (3).

6. A head warmer for a low temperature stirling cooler, according to claim 1, wherein: and a heat insulation material (8) is filled at the wiring port (7).