Acceleration sensor temperature protection device

Abstract

The utility model discloses an acceleration sensor temperature protection device, include: sealing cover, sealing cylinder, outer hose and inner hose, the sealing cylinder includes upper cylinder body and lower cylinder body, and the lower cylinder body is connected in experimental equipment mesa, the sealing cover includes lower connecting portion and upper connecting portion, and the inside of sealing cover is equipped with the baffle, is equipped with at least two air holes on the baffle, and the lower connecting portion is connected with upper cylinder body, the outer hose is connected in upper connecting portion, and the inner hose is connected in one air hole, the utility model discloses setting up sealing cylinder, utilizes sealing cylinder and equipment mesa connection, places acceleration sensor in sealing cylinder to come apart from the extreme working condition in experiment box.

Description

Technical Field

[0001] This utility model belongs to the field of comprehensive experiments, and specifically relates to a temperature protection device for an accelerometer sensor. Background Technology

[0002] In the field of comprehensive environmental testing (temperature + vibration), monitoring the vibration level under extreme temperature conditions is a major challenge for the industry. Some high-performance accelerometers can operate at temperatures below -55°C, but the lower the operating temperature, the higher the price. Therefore, the ability of accelerometers to withstand high and low temperatures is an important indicator for evaluating their performance in comprehensive environmental testing. Utility Model Content

[0003] The purpose of this invention is to provide a temperature protection device for an accelerometer, which introduces dry air at room temperature into the device to isolate extreme working conditions in the experimental chamber.

[0004] To address the aforementioned problems in the existing technology, the technical solution adopted by this utility model is as follows:

[0005] The accelerometer temperature protection device includes: a sealing cover, a sealing cylinder, an outer hose, and an inner hose;

[0006] The sealing cylinder includes an upper cylinder and a lower cylinder, and the lower cylinder is connected to the experimental equipment platform;

[0007] The sealing cover includes a lower connecting part and an upper connecting part. The interior of the sealing cover is provided with a partition plate, and the partition plate is provided with at least two vent holes. The lower connecting part is connected to the upper cylinder.

[0008] The outer hose is connected to the upper connecting part, and the inner hose is connected to one of the vent holes.

[0009] By setting up a sealed cylinder and connecting it to the equipment platform, the accelerometer sensor can be placed inside the sealed cylinder without affecting its operation.

[0010] By setting a sealing cap, connecting the sealing cap to the sealing cylinder, and then connecting the inner and outer hoses to the sealing cap, and extending the other ends of the inner and outer hoses to the outside of the experimental chamber, a space that is relatively isolated from the inside of the experimental chamber can be formed inside the sealing cap and sealing cylinder. Then, gas is introduced through the hoses, which helps to increase the temperature inside the sealed cavity.

[0011] Furthermore, the lower connecting part is threaded, and the upper cylinder is threaded, with the upper cylinder and the lower connecting part connected by threads. The sealing cap and the inside of the sealing cylinder are threaded for connection, and a rubber ring made of silicone rubber is added at the connection point for sealing. For ease of operation, a sealing cap is connected to the sealing cylinder, and then a flexible tube is connected to the sealing cap. This allows the flexible tube to be removed along with the sealing cap after the experiment, without affecting the disassembly of the accelerometer sensor.

[0012] Furthermore, the partition plate is provided with a first vent and a second vent, and the inner flexible hose is connected to the second vent. The partition plate is designed to accommodate the flexible hose. The two vents are provided: one for air intake and the other for exhaust, ensuring a continuous supply of high-temperature, dry gas to maintain the temperature within the sealed cavity. More vents can also be provided, but at least two are sufficient for normal operation.

[0013] Furthermore, the interior of the sealing cylinder is a lower sealing cavity, and the interior of the sealing cover is an upper sealing cavity. When the sealing cover is connected to the sealing cylinder, the upper sealing cavity and the lower sealing cavity are connected to form a sealing cavity for placing the acceleration sensor.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. The sealing device allows the accelerometer to operate in an environment of -100°C, a temperature at which no other accelerometer in the industry can operate during HALT&HASS testing.

[0016] 2. The better the low-temperature tolerance of an accelerometer, the higher its price. This device enables sensors with low environmental adaptability to work in extreme temperatures, thus solving the cost problem of accelerometers. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the installation of this utility model. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the installation of this utility model. Figure 2 ;

[0019] Figure 3 for Figure 2 A cross-sectional view along the AA direction;

[0020] Figure 4 This is a schematic diagram of the sealing cap and sealing cylinder in this utility model;

[0021] Figure 5 This is a schematic diagram of the sealing cap structure in this utility model;

[0022] Figure 6This is a top view of the sealing cap in this utility model.

[0023] In the figure: 1-Sealing cap; 11-Lower connecting part; 12-Upper connecting part; 13-First vent hole; 14-Second vent hole; 15-Upper sealing cavity; 16-Divider plate; 2-Sealing cylinder; 21-Lower cylinder; 22-Upper cylinder; 23-Lower sealing cavity; 3-Outer hose; 4-Inner hose. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and reference numerals.

[0025] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0026] The terms “first,” “second,” “third,” etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0029] Example 1:

[0030] like Figure 1-5 As shown, the accelerometer temperature protection device includes: a sealing cover 1, a sealing cylinder 2, an outer hose 3, and an inner hose 4;

[0031] The sealing cylinder 2 includes an upper cylinder 22 and a lower cylinder 21, wherein the lower cylinder 21 is connected to the experimental equipment platform;

[0032] The sealing cover 1 includes a lower connecting part 11 and an upper connecting part 12. The interior of the sealing cover 1 is provided with a partition plate 16, and the partition plate 16 is provided with at least two vent holes. The lower connecting part 11 is connected to the upper cylinder 22.

[0033] The outer hose 3 is connected to the upper connecting part 12, and the inner hose 4 is connected to one of the vent holes.

[0034] By setting up a sealing cylinder 2 and connecting the sealing cylinder 2 to the equipment platform, the acceleration sensor can be placed inside the sealing cylinder 2 without affecting the operation of the acceleration sensor.

[0035] By setting a sealing cover 1, connecting the sealing cover 1 to the sealing cylinder 2, and then connecting the inner hose 4 and the outer hose 3 to the sealing cover 1, and extending the other end of the inner hose 4 and the outer hose 3 to the outside of the equipment, a space that is relatively isolated from the inside of the equipment can be formed inside the sealing cover 1 and the sealing cylinder 2. Then, gas is introduced through the hose, which helps to increase the temperature inside the sealing cavity.

[0036] This invention mainly consists of a sealing cylinder 2 and a sealing cover 1. The sealing cover 1 requires two holes: one for the introduction of dry air and cables, and the other for venting. The method of use is as follows: An accelerometer is fixed to the test platform. The sealing cylinder 2 is then rigidly connected to the test platform, covering the accelerometer without contacting it. The accelerometer cable is then passed through the vent hole on the top of the sealing cover 1 and installed on the accelerometer. The sealing cover 1 is then joined to the sealing cylinder 2. Dry air is introduced into the sealed cavity through the vent hole on the sealing cover 1, and a flexible hose is used to secure it to the sealing cover 1, creating a sealed environment. This isolates the extreme temperatures within the test chamber, protecting the accelerometer from temperature effects.

[0037] Example 2:

[0038] Based on Example 1, such as Figure 6 As shown, the lower connecting part 11 is threaded, and the upper cylinder 22 is threaded. The upper cylinder 22 and the lower connecting part 11 are connected by threads. The sealing cap and the sealing cylinder are threaded to connect, and a rubber ring is added at the connection for sealing. The material is silicone rubber.

[0039] The sealing cylinder 2 can be connected to the test platform using glue, or a nut can be welded on later to rigidly connect it to the platform. When using this device, a high / low temperature resistant flexible hose needs to be connected to the protrusion on the top of the sealing cap to enclose the accelerometer cable and the drying air hose. For ease of operation, the sealing cap 1 is connected to the sealing cylinder 2, and then the flexible hose is connected to the sealing cap 1. After the experiment, the hose can be removed along with the sealing cap 1 without affecting the disassembly of the accelerometer. The sealing cap 1 and the sealing cylinder 2 are designed as separate structures to facilitate the assembly and disassembly of the accelerometer.

[0040] The partition plate 16 is provided with a first vent 13 and a second vent 14, and the inner hose 4 is connected to the second vent 14.

[0041] The partition plate 16 is designed for installing the flexible hose. Two vents are provided: one for air intake and the other for exhaust. This continuous supply of high-temperature, dry gas ensures the temperature within the sealed cavity is maintained. More vents can be added, but at least two are sufficient for normal operation.

[0042] The sealing cylinder 2 has a lower sealing cavity 23 inside, and the sealing cover 1 has an upper sealing cavity 15 inside. When the sealing cover 1 is connected to the sealing cylinder 2, the upper sealing cavity 15 and the lower sealing cavity 23 are connected to form a sealing cavity for placing the acceleration sensor.

[0043] Specific working principle:

[0044] Installation method: First, connect the sealing cylinder 2 to the equipment platform and place the acceleration sensor inside the sealing cylinder 2. Then, connect the sealing cover 1 to the sealing cylinder 2. Next, pass the inner hose 4 through the outer hose 3, pass the cable through the inner hose 4, and connect the cable to the acceleration sensor. Then, connect the inner hose 4 to the vent hole. Finally, connect the outer hose 3 to the upper connection part 12. At this time, the inner hose 4 is inside the outer hose 3. The other end of the inner hose 4 and the other end of the outer hose 3 should extend out of the test chamber, and the inner hose 4 should be connected to the air inlet pump.

[0045] In operation, dried gas is continuously introduced into the sealing cavity through the inner hose 4. The gas enters the sealing cavity through the second vent 14 connected to the inner hose 4, and then enters the outer hose 3 through the first vent 13, and is discharged with the outer hose 3.

[0046] This utility model is not limited to the above-mentioned optional embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in its shape or structure, any technical solution that falls within the scope of the claims of this utility model shall be protected by this utility model.

Claims

1. An accelerometer temperature protection device, characterized in that: include: Sealing cap (1), sealing cylinder (2), outer hose (3) and inner hose (4); The sealing cylinder (2) includes an upper cylinder (22) and a lower cylinder (21), the lower cylinder (21) being connected to the experimental equipment platform; The sealing cover (1) includes a lower connecting part (11) and an upper connecting part (12). The interior of the sealing cover (1) is provided with a partition plate (16). The partition plate (16) is provided with at least two ventilation holes. The lower connecting part (11) is connected to the upper cylinder (22). The outer hose (3) is connected to the upper connecting part (12), and the inner hose (4) is connected to one of the vent holes.

2. The accelerometer temperature protection device according to claim 1, characterized in that: The lower connecting part (11) is threaded, the upper cylinder (22) is threaded, and the upper cylinder (22) and the lower connecting part (11) are connected by threads.

3. The accelerometer temperature protection device according to claim 1, characterized in that: The partition plate (16) is provided with a first vent (13) and a second vent (14), and the inner hose (4) is connected to the second vent (14).

4. The accelerometer temperature protection device according to claim 2, characterized in that: The sealing cylinder (2) has a lower sealing cavity (23) inside, and the sealing cover (1) has an upper sealing cavity (15) inside. When the sealing cover (1) is connected to the sealing cylinder (2), the upper sealing cavity (15) and the lower sealing cavity (23) are connected.

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