CN211827809U - A side-sealed calorimeter with fault-tolerant structure - Google Patents

Abstract

The utility model provides a side sealing calorimeter with a fault-tolerant structure, comprising an outer cylinder (1), an inner cylinder (2), a gasket (3), a rubber cover (6), a sealing ring (7), a gap (8) ), ring groove (9); the rubber cover (6) is a stepped cylinder made of hard rubber, the upper part of the rubber cover (6) is a cylinder with a larger diameter, and the lower cylinder with a smaller diameter is in the circumferential direction A ring groove (9) is opened, the sealing ring (7) is a hollow circular ring made of soft rubber material, and the sealing ring (7) is embedded in the ring groove (9) on the rubber cover (6). 6) When covering the calorimeter, the sealing ring (7) slides into the inner side of the outer cylinder (1) along the arc surface of the upper edge of the outer cylinder (1), and the lower end face of the rubber cover (6) presses the inner cylinder (2). ) to seal the inner cylinder (2), and at the same time the sealing ring (7) is compressed by the inner side of the outer cylinder (1) to seal the outer cylinder (1), so that the calorimeter system and the external heat Swap to a minimum.

Description

A side-sealed calorimeter with fault-tolerant structure

technical field

The utility model relates to a teaching instrument, in particular to a sealed calorimeter with a fault-tolerant structure.

Background technique

A calorimeter is a thermal insulation device used to measure changes in heat within a system. The calorimeter commonly used in physical experiments is shown in Figure 1: the outer cylinder 1 and the inner cylinder 2 are directly contacted and sealed with the rubber cover 6, and a non-flowing air layer is formed between the outer cylinder 1 and the inner cylinder 2 to reduce the external For heat conduction, the agitator jack 4 and the thermometer jack 5 are made on the plastic cover 6 . The problem with this calorimeter is that the rubber cover 6 needs to be in contact with the upper edges of the outer cylinder 1 and the inner cylinder 2 at the same time to ensure sealing, which is unreasonable in the structural design. In fact, due to problems such as manufacturing accuracy and thermal expansion, it is difficult to Make sure that the upper edges of the outer cylinder 1 and the inner cylinder 2 are in close contact with the corresponding parts of the rubber cover 6. One of the outer cylinder 1 and the inner cylinder 2 must be tightly closed. This is an important reason why the calorimeter is difficult to ensure the sealing. . Such a design requires that the calorimeter be free from manufacturing tolerances and does not take into account factors such as uneven thermal expansion and operator error.

Therefore, the structure of the calorimeter in the prior art is unreasonable, resulting in a large heat exchange between the system and the outside world, and the measurement is not accurate enough.

Utility model content

In view of the above problems existing in the background technology, the present invention provides a side-sealed calorimeter with a fault-tolerant structure, which can prevent the poor sealing caused by the manufacturing accuracy and the poor sealing caused by the uneven thermal expansion of each component. It realizes automatic adjustment, keeps the calorimeter system sealed, has a strong fault tolerance rate, and is easy to operate, which is conducive to the operator to quickly complete the operation and minimize the heat exchange between the system and the outside world. The specific technical solutions are as follows:

A side-sealed calorimeter with fault-tolerant structure, as shown in FIG.

The outer cylinder 1 and the inner cylinder 2 are both cylinders with closed bottom ends, the upper edge of the cylinder mouth extends outward into an arc shape, the inner cylinder 2 is placed at the bottom of the outer cylinder 1 through a heat-insulating gasket 3, and the inner cylinder 2 A uniform air layer is left between it and the outer cylinder 1.

The rubber cover 6 is a stepped cylinder, the upper part of the rubber cover 6 is a cylinder with a larger diameter, the lower part is a cylinder with a smaller diameter, and the side surface of the lower cylinder is provided with a ring groove 9 along the circumferential direction.

The sealing ring 7 is a hollow ring, and the sealing ring 7 is embedded in the ring groove 9 on the lower side of the rubber cover 6 and cannot come out. The arc surface slides into the inner side of the outer cylinder 1, the lower end surface of the rubber cover 6 is pressed against the arc edge of the upper edge of the inner cylinder 2 to seal the inner cylinder 2, and the sealing ring 7 is compressed by the inner side of the outer cylinder 1 to seal the outer cylinder 2. The cylinder 1 is sealed, and the outer cylinder 1 and the inner cylinder 2 need to be in contact and sealed with the rubber cover 6 in the same direction, which is converted into a side seal between the rubber cover 6 and the outer cylinder 1, and the two do not interfere with each other.

Further, the plastic cover 6 is made of hard rubber material, and is provided with an agitator jack 4 and a thermometer jack 5 thereon.

Further, the outer surface of the sealing ring 7 is coated with a small amount of lubricant, so that the rubber cover 6 as a whole can freely slide up and down along the inner wall of the outer cylinder 1 .

Further, after the rubber cover 6 seals the inner cylinder 2, there is still a gap 8 between the upper edge of the outer cylinder 1 and the lower surface of the cylinder with a larger diameter at the upper part of the rubber cover 6, so as to ensure that the rubber cover 6 will The cylinder 2 is reliably sealed, and a non-flowing air layer is formed between the outer cylinder 1 and the inner cylinder 2.

Further, the sealing ring 7 is made of soft rubber material. Those skilled in the art can understand that "made of soft rubber material" does not exclude the appropriate addition of other materials in the sealing ring.

Further, a flexible sealing layer is provided on the lower end surface of the rubber cover 6 to improve the tolerance of the processing accuracy of the upper edge of the inner cylinder 2 . The flexible sealing layer can be made of the same material as the sealing ring 7 .

The beneficial effects of a side-sealed calorimeter with a fault-tolerant structure provided by the utility model are: (1) to overcome the deficiencies in the structural design of the calorimeter in the background technology, for the difficult-to-reach outer cylinder 1 and inner cylinder 2 The contact sealing with the rubber cover 6 in the same direction is converted into the sealing method of the inner cylinder 2 unchanged, and the outer cylinder 1 and the rubber cover 6 are sealed on the side. The outer cylinder 1 and the inner cylinder 2 are sealed with the same rubber cover 6 and they do not interfere with each other, allowing the height of the upper edge of the inner cylinder 2 to vary within a certain range, and the rubber cover 6 and the sealing ring 7 can ensure that the inner cylinder 2 And the outer cylinder 1 is sealed, such a calorimeter structure has a large fault tolerance rate, and there is no principle error in the structure; (2) The operation is convenient and fast, and the dynamic sealing performance is good. The calorimeter can be opened or closed in one operation, and the calorimeter can be opened or sealed without any adjustment or alignment. It can also be successfully completed for experiments with short operation and measurement time. .

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention. In the attached image:

FIG. 1 is a schematic structural diagram of a calorimeter commonly used in the prior art.

2 is a schematic structural diagram of a side-sealed calorimeter with a fault-tolerant structure according to an embodiment of the present invention.

3 is a schematic cross-sectional view of a side-sealed calorimeter rubber cover with a fault-tolerant structure of the present invention.

In the figure: 1. Outer cylinder; 2. Inner cylinder; 3. Gasket; 4. Jack for agitator; 5. Jack for thermometer; 6. Rubber cover; 7. Sealing ring; 8. Clearance; 9. Ring groove.

Detailed ways

The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present utility model, but not to limit the present utility model.

A side-sealed calorimeter with fault-tolerant structure, as shown in Figure 2, includes: an outer cylinder 1, an inner cylinder 2, a gasket 3, an agitator jack 4, a thermometer jack 5, a plastic cover 6, a sealing ring 7, Ring groove 9, wherein the sealing ring 7 is a hollow circular ring made of soft rubber material, and the sealing ring 7 is embedded in the ring groove 9 on the rubber cover 6 and cannot come out. When the rubber cover 6 is covered on the calorimeter, the sealing The ring 7 slides into the inner side of the outer cylinder 1 along the arc surface of the upper edge of the outer cylinder 1, and the lower end face of the rubber cover 6 is pressed against the arc edge of the upper edge of the inner cylinder 2 to seal the inner cylinder 2, and the sealing ring 7 is compressed at the same time. To seal the outer cylinder 1, the outer cylinder 1 and the inner cylinder 2 need to be contacted and sealed with the rubber cover 6 in the same direction, which is converted into a side seal between the rubber cover 6 and the outer cylinder 1, and the two do not interfere with each other.

The sealing ring 7 adopts a hollow structure, which can make it easier to compress and deform, and is easy to recover after deformation. When in use, the outer surface of the sealing ring 7 is coated with a small amount of lubricant, so that the sealing ring 7 can slide up and down freely along the inner wall of the outer cylinder 1. After the rubber cover 6 seals the inner cylinder 2, there is still a gap 8 between the upper edge of the outer cylinder 1 and the lower surface of the cylinder with a larger diameter on the upper part of the rubber cover 6, so as to ensure that the rubber cover 6 seals the inner cylinder 2 reliably and makes A non-flowing air layer is formed between the outer cylinder 1 and the inner cylinder 2, which greatly reduces the heat exchange between the calorimeter system and the outside due to air convection.

In another specific embodiment, a flexible sealing layer is also provided on the lower end surface of the rubber cover 6, so that even if there is a large manufacturing error on the upper edge of the inner cylinder 2, reliable sealing can be achieved.

In actual operation, put the sealing ring 7 in the ring groove 9 of the lower cylinder of the plastic cover 6, and then insert the handle of the stirrer and the thermometer used in the experiment into the agitator jack 4 and the thermometer jack 5, and then insert the The substance (need to be prepared separately) is put into the inner cylinder 2, and the assembled plastic cover 6 is quickly and once covered with the calorimeter, and the measurement can be carried out. When opening the calorimeter, lift the rubber cover 6 upwards to complete it at one time. If there is a slight unevenness between the sealing ring 7 and the inner wall of the outer cylinder 1, you can use the other hand to slightly hold the outer cylinder of the calorimeter. 1 is enough, the operation is simple and stable, and the operation time will not be prolonged due to the complicated operation, or the measured substance will be spilled due to the difficulty of the operation, resulting in mass loss, affecting the accuracy of the measurement results.

Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalents, the present utility model is also intended to include these modifications and variations.

Claims (5)

1. A side sealing calorimeter with a fault-tolerant structure is characterized by comprising an outer cylinder (1), an inner cylinder (2), a gasket (3), a rubber cover (6), a sealing ring (7) and a ring groove (9);

the outer cylinder (1) and the inner cylinder (2) are cylinders with closed bottom ends, the upper edge of a cylinder opening extends outwards to form an arc shape, the inner cylinder (2) is arranged at the bottom in the outer cylinder (1) through a heat-insulating gasket (3), and a uniform air layer is reserved between the inner cylinder (2) and the outer cylinder (1);

the rubber cover (6) is a stepped cylinder, the upper part of the rubber cover (6) is a cylinder with a larger diameter, the lower part of the rubber cover is a cylinder with a smaller diameter, and the side surface of the cylinder at the lower part is provided with a ring groove (9) along the circumferential direction;

the sealing ring (7) is a hollow circular ring, the sealing ring (7) is embedded into a circular groove (9) on the side surface of the lower part of the rubber cover (6) and cannot be separated, when the rubber cover (6) covers the calorimeter, the sealing ring (7) slides into the inner side of the outer cylinder (1) along the circular arc surface on the upper edge of the outer cylinder (1), the lower end surface of the rubber cover (6) presses on the circular arc edge on the upper edge of the inner cylinder (2) to seal the inner cylinder (2), and meanwhile, the sealing ring (7) is compressed by the inner side surface of the outer cylinder (1) to seal the outer cylinder (1);

after the inner cylinder (2) is sealed by the rubber cover (6), a gap (8) is formed between the upper edge of the outer cylinder (1) and the lower surface of the cylinder with the larger diameter at the upper part of the rubber cover (6), and a non-flowing air layer is formed between the outer cylinder (1) and the inner cylinder (2).

2. The side seal calorimeter with a fault-tolerant structure according to claim 1, wherein the rubber cover (6) is made of a hard rubber material, and the rubber cover (6) is provided with a stirrer insertion hole (4) and a thermometer insertion hole (5).

3. The side seal calorimeter with a fault-tolerant architecture according to claim 1, wherein the outer surface of the sealing ring (7) is coated with a small amount of lubricant.

4. The side seal calorimeter with a fault-tolerant configuration of claim 1, wherein the sealing ring (7) is made of a soft rubber material.

5. The side seal calorimeter with a fault-tolerant structure of claim 1, wherein a flexible sealing layer is provided on the lower end face of the rubber cover (6).

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