CN211041512U

CN211041512U - Low-temperature environment simulation device

Info

Publication number: CN211041512U
Application number: CN201921777801.3U
Authority: CN
Inventors: 张小林; 沈会林; 胡华; 刘平; 樊超; 赵学斌; 李洋; 王珏; 孙瑞敏; 李冬
Original assignee: China Academy of Launch Vehicle Technology CALT; Shanxi Aerospace Qinghua Equipment Co Ltd
Current assignee: China Academy of Launch Vehicle Technology CALT; Shanxi Aerospace Qinghua Equipment Co Ltd
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-07-17
Anticipated expiration: 2029-10-22

Abstract

The utility model discloses a low-temperature environment simulation device, which comprises a hollow inner barrel, wherein the top of the inner barrel is provided with an inner barrel cover, and the center of the inner barrel cover is provided with a mounting hole; a plurality of limiting frames are arranged in the inner barrel, a plurality of fixing bolts are arranged among the limiting frames, a limiting hole is formed in the center of each limiting frame, a copper pipe penetrates through each limiting hole, the top of each copper pipe penetrates through the mounting hole, the bottom of each copper pipe is closed, and the copper pipes are in close contact with the inner bottom wall of the inner barrel; the outer side of the inner barrel can be detachably provided with a heat preservation shell, the heat preservation shell comprises a heat preservation shell body and a heat preservation shell upper cover, and heat preservation layers are filled in the heat preservation shell body and the heat preservation shell upper cover; the device has high cooling speed and can accurately simulate the low-temperature environment.

Description

Low-temperature environment simulation device

Technical Field

The utility model relates to a low temperature environment analogue means belongs to low temperature analogue means technical field.

Background

When the temperature control system of the product is used for verifying the automatic heating function, tap water is currently put into the self-sealing bag or the mineral water bottle for freezing to form ice blocks, and then low temperature is provided for the temperature sensor so as to simulate the working condition of the product in a low-temperature environment. The provided temperature is only 5 ℃ at least, and the condition of automatic heating start cannot be met.

The prior art of cooling by ice cubes has the following disadvantages:

1) the ice blocks are in close contact with the sensor, and the melted water easily enters the temperature sensor to cause the fault of the temperature sensor.

2) Even if the ice is already in close contact with the temperature sensor, the contact effect is preferably a line contact, which directly results in a temperature drop below 5 c, which does not allow the temperature to be lowered.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes prior art exists not enough, and the technical problem that solve provides a low temperature environment analogue means, and the cooling rate is fast, can accurate simulation low temperature environment.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

a low-temperature environment simulation device comprises a hollow inner barrel, wherein an inner barrel cover is arranged at the top of the inner barrel, and a mounting hole is formed in the center of the inner barrel cover; a plurality of limiting frames are arranged in the inner barrel, a plurality of fixing bolts are arranged among the limiting frames, a limiting hole is formed in the center of each limiting frame, a copper pipe penetrates through each limiting hole, the top of each copper pipe penetrates through the mounting hole, the bottom of each copper pipe is closed, and the copper pipes are in close contact with the inner bottom wall of the inner barrel;

the outer side of the inner barrel can be detachably provided with a heat preservation shell, the heat preservation shell comprises a heat preservation shell body and a heat preservation shell upper cover, and heat preservation layers are filled in the heat preservation shell body and the heat preservation shell upper cover.

Preferably, a pair of clamping clamps are arranged on two sides of the mounting hole, and flexible anti-slip layers are arranged on opposite surfaces of the clamping clamps.

Preferably, two adjacent limiting frames are respectively connected to two ends of the fixing bolt.

Preferably, two to three limiting frames are arranged on each fixing bolt in a penetrating mode.

Preferably, the bottom wall of the inner barrel is detachably arranged, a circle of external threads are arranged at the bottom of the inner barrel, and a circle of internal threads are arranged on the bottom wall.

Preferably, the inner barrel cover is in threaded connection with the inner barrel, a circle of internal threads are arranged at the top of the inner barrel, and a circle of external threads are arranged at the bottom of the inner barrel cover.

Preferably, the bottom of the inner barrel cover is also provided with a circle of elastic sealing ring.

Preferably, the number of the limiting frames is two.

Preferably, the limiting frame is triangular.

Preferably, the limiting frame is matched with the inner wall of the inner barrel in shape and is provided with a plurality of through holes.

Compared with the prior art, the utility model following beneficial effect has.

1) The device preserves the temperature of the ice;

2) the device forms full enclosure to the temperature sensor;

3) eliminating the possibility of water ingress in the sensor; compared with the existing line contact type ice block, the ice block has the advantage of fast cooling speed, and the cooling speed is 1 ℃/min within the range of minus 5 ℃ to 0 ℃. Can provide a low-temperature simulation environment with the temperature not higher than-8 ℃ and the time length longer than 4 h.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.

Fig. 2 is a schematic view of an inner barrel structure in embodiment 2 of the present invention.

Fig. 3 is a schematic sectional view taken along line a-a of fig. 2.

Fig. 4 is a schematic view of a structure of a clip according to embodiment 2 of the present invention.

Fig. 5 is a schematic view of an inner barrel cover structure in embodiment 2 of the present invention.

In the figure: the device comprises a base, a barrel body, a limiting frame, a fixing bolt, a copper pipe, a heat-insulating shell upper cover, a clamping clamp and an elastic sealing ring, wherein the base is 1, the barrel body is 2, the limiting frame is 3, the fixing bolt is 4, the copper pipe is 5, the heat-insulating shell is 6, the clamping clamp is 8, and the elastic sealing ring is 9.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Example 1

A low-temperature environment simulation device comprises a hollow inner barrel 1, wherein an inner barrel cover 2 is arranged at the top of the inner barrel 1, and a mounting hole is formed in the center of the inner barrel cover 2; a plurality of limiting frames 3 are arranged in the inner barrel 1, a plurality of fixing bolts 4 are arranged among the limiting frames 3, a limiting hole is formed in the center of each limiting frame 3, a copper pipe 5 penetrates through each limiting hole, the top of each copper pipe 5 penetrates through the corresponding mounting hole, the bottom of each copper pipe 5 is closed, and the copper pipes are in close contact with the inner bottom wall of the inner barrel 1;

the outer side of the inner barrel 1 can be detachably provided with a heat preservation shell, the heat preservation shell comprises a heat preservation shell body 6 and a heat preservation shell upper cover 7, and heat preservation layers are filled in the heat preservation shell body 6 and the heat preservation shell upper cover 7.

The bottom of the inner barrel cover 2 is also provided with a circle of elastic sealing ring 9.

Two adjacent limiting frames 3 are respectively connected to two ends of the fixing bolt 4, and two to three limiting frames 3 can also be arranged on each fixing bolt 4 in a penetrating mode. The stability of the limiting frame is ensured, and the copper pipe is kept in an upright state.

The number of the limiting frames 3 is two.

The limiting frame 3 is triangular.

In actual use, the copper tube can be welded into a copper test tube with one sealed end, so that no leakage exists after the welding position is soaked with water; the shape of the copper pipe is matched with that of the temperature sensor, so that the temperature sensor can be inserted into the copper inner test tube.

After the limiting frame is assembled, the inner barrel is placed into the inner barrel, the copper test tube is inserted into the inner barrel, tap water is injected into the inner barrel, the inner barrel is placed into a refrigerator to be frozen into ice, and the inner barrel cover is covered. The outer surface of the inner barrel is provided with a heat preservation shell, and the temperature sensor is inserted into the copper test tube through the upper cover during use. The device forms a complete enclosure for the temperature sensor. The heat preservation shell carries out adiabatic to interior bucket with the external world, has solved the ice-cube heat dissipation and has melted fast problem and provide with temperature sensor appearance assorted physical space. The inner barrel can also be replaced by a household heat-insulating barrel.

Example 2

In the device of embodiment 1, the inner barrel cover 2 is connected with the inner barrel 1 through threads, a circle of internal threads are arranged at the top of the inner barrel, and a circle of external threads are arranged at the bottom of the inner barrel cover. The diapire of interior bucket 1 is for dismantling the setting, and interior bucket bottom sets up the round external screw thread, and the diapire sets up the round internal thread. The bottom of the heat preservation shell 6 is detachably arranged.

In actual use, if meet longer temperature sensor, can assemble a plurality of interior buckets, the same shell that keeps warm also can assemble, realizes the verification to longer temperature sensor.

A pair of clamping clamps 8 are arranged on two sides of the mounting hole, and flexible anti-slip layers are arranged on opposite surfaces of the clamping clamps 8. In the in-service use, if meet shorter or thinner temperature sensor, can use the joint to press from both sides and carry out the centre gripping fixed, realize verifying, prevent that temperature sensor from dropping into in the copper pipe, be difficult for taking out.

Example 3

In the device of embodiment 2, the shape of the limiting frame 3 is matched with that of the inner wall of the inner barrel 1, and a plurality of through holes are arranged.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A low-temperature environment simulation device is characterized by comprising a hollow inner barrel, wherein an inner barrel cover is arranged at the top of the inner barrel, and a mounting hole is formed in the center of the inner barrel cover; a plurality of limiting frames are arranged in the inner barrel, a plurality of fixing bolts are arranged among the limiting frames, a limiting hole is formed in the center of each limiting frame, a copper pipe penetrates through each limiting hole, the top of each copper pipe penetrates through the mounting hole, the bottom of each copper pipe is closed, and the copper pipes are in close contact with the inner bottom wall of the inner barrel;

2. The low-temperature environment simulation device according to claim 1, wherein a pair of clamping clamps are arranged on two sides of the mounting hole, and flexible anti-slip layers are arranged on opposite surfaces of the clamping clamps.

3. The low-temperature environment simulation device according to claim 1, wherein two ends of the fixing bolt are respectively connected with two adjacent limiting frames.

4. The low-temperature environment simulation device according to claim 1, wherein two to three limiting frames are arranged on each fixing bolt in a penetrating manner.

5. The device as claimed in claim 1, wherein the bottom wall of the inner barrel is detachably disposed, a circle of external threads is disposed on the bottom of the inner barrel, and a circle of internal threads is disposed on the bottom wall.

6. The low-temperature environment simulation device according to claim 1, wherein the inner barrel cover is connected with the inner barrel through threads, a circle of internal threads are arranged at the top of the inner barrel, and a circle of external threads are arranged at the bottom of the inner barrel cover.

7. The device as claimed in claim 1, wherein a ring of elastic sealing ring is further disposed at the bottom of the inner barrel cover.

8. A cryogenic environment simulation device according to claim 1, wherein the number of the limiting frames is two.

9. The device according to claim 1, wherein the limiting frame is triangular.

10. The low-temperature environment simulation device according to claim 1, wherein the limiting frame is matched with the inner wall of the inner barrel in shape and is provided with a plurality of through holes.