CN203037659U - Fixing structure for acceleration sensor - Google Patents

Abstract

The utility model relates to an acceleration sensor fixing structure, which is used for fixing the acceleration sensor on the outer box wall of a transformer. Sensor connection. Compared with the prior art, the acceleration sensor fixing structure of the utility model provides a non-invasive, convenient and accurate measurement method for the mechanical vibration signal acquisition of the transformer on-load tap changer. The acceleration sensor fixing structure of the utility model not only There is basically no damage to the outer box wall of the transformer, and the mechanical vibration signal collection position can be fixed at the same place, which is convenient for future measurement and comparison, and improves the reliability of vibration signal comparison. On-load tap changer mechanical vibration signal comparison reliability problem.

Description

An acceleration sensor fixing structure

technical field

The utility model relates to the field of acceleration sensors, in particular to an acceleration sensor fixing structure.

Background technique

Transformer on-load tap changers are widely used, and the accident rate of transformers caused by on-load tap switches is on the rise. Therefore, it is generally believed that analyzing mechanical vibration signals is a more effective method for diagnosing the operating status of on-load tap switches. At present, acceleration sensors are widely used to collect mechanical vibration signals. Most of the acceleration sensors are fixed on site by welding screws on the outer box wall of the transformer or using magnetic bases to connect the acceleration sensors for signal collection. However, these two methods have disadvantages: the welding screw is fixed on the surface of the outer box wall of the transformer, which seriously affects the appearance of the transformer and has potential safety hazards; the use of a magnetic base cannot ensure that the mechanical vibration signals of the two measurements before and after are comparable. In view of these deficiencies, it is necessary to provide a new type of acceleration sensor fixing method.

Utility model content

The purpose of this utility model is to provide a fixed structure of an acceleration sensor in order to overcome the defects of the above-mentioned prior art, which is used for non-invasive collection of mechanical vibration signals generated during the action process of the on-load tap changer switch of the transformer, and solves the problem of collecting mechanical vibration signals on site. Methods and technical issues of measurement reliability.

The purpose of this utility model can be achieved through the following technical solutions:

An acceleration sensor fixing structure, used to fix the acceleration sensor on the outer box wall of the transformer, the fixing structure includes a base, one side of the base is bonded to the outer box wall of the transformer, and the other side is connected with the acceleration sensor through a screw connect.

One side of the base is bonded to the outer box wall of the transformer by glue.

The screw is a double-ended flat-end screw.

A screw hole matched with the screw rod is provided in the middle of the base.

The fixed structure of the acceleration sensor of the utility model provides a non-invasive, convenient and accurate measurement method for the acquisition of the mechanical vibration signal of the transformer on-load tap changer, and is used to solve the problem that the vibration signal of the existing on-load tap changer needs to be collected in the transformer. Problems such as welding the screw on the outer box wall or using a magnetic base to connect the acceleration sensor. The acceleration sensor fixing structure of the utility model not only basically does no damage to the outer box wall of the transformer, but also can fix the mechanical vibration signal collection position at the same place, which is convenient for future measurement and comparison and improves the reliability of vibration signal comparison.

The utility model solves the on-site installation problem of the acceleration sensor and the reliability problem of repeated collection of mechanical vibration signals of the same on-load voltage regulating switch.

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

First, the fixed structure of the acceleration sensor of the utility model has no electrical connection with the transformer, which ensures the safety of the workers collecting mechanical vibration signals on site, so the technical problem of personal safety on site is solved.

Second, the acceleration sensor fixing structure of the utility model adopts superglue to fix the base on the outer box wall of the transformer, which has no damage to the outer box wall of the transformer, so the technical problem of fixing the acceleration sensor on site is solved.

Third, the fixed structure of the acceleration sensor of the utility model leaves the base on the outer box wall of the transformer to ensure that the vibration signals are collected at the same place each time in the future, so the technical problem of the reliability of the comparison and analysis of the vibration signals measured twice is solved .

Description of drawings

Fig. 1 is the structural representation of the fixed structure of acceleration sensor of the present utility model;

Fig. 2 is the structural representation of screw rod;

Fig. 3 is a structural schematic diagram of the base.

In the figure, 1 is an acceleration sensor, 2 is a screw rod, 3 is a base, 4 is an outer box wall of a transformer, and 5 is a screw hole.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example

An acceleration sensor fixing structure, as shown in Figure 1, used to fix the acceleration sensor 1 on the transformer outer box wall 4, the fixing structure includes a base 3, one side of the base 3 is bonded to the transformer outer box wall by glue 4, the other side is connected with the acceleration sensor 1 through the screw rod 2.

As shown in Figure 2, the screw rod 2 is a double-ended flat-end screw rod.

As shown in FIG. 3 , a screw hole 5 matching the screw rod 2 is provided in the middle of the base 3 .

The fixed structure of the acceleration sensor provides a non-intrusive, convenient and accurate measurement method for the acquisition of the mechanical vibration signal of the transformer on-load tap changer, which is used to solve the problem that the vibration signal of the existing on-load tap changer needs to be collected on the outer box wall of the transformer. Problems like soldering on the screw or using a magnetic mount to attach the accelerometer. The fixed structure of the acceleration sensor not only basically does no damage to the outer box wall of the transformer, but also can fix the mechanical vibration signal collection position at the same place, which is convenient for future measurement and comparison, and improves the reliability of vibration signal comparison.

The fixed structure of the acceleration sensor solves the problem of on-site installation of the acceleration sensor and the reliability of the comparison of mechanical vibration signals of the same on-load tap changer repeatedly collected.

Claims (4)

1. acceleration transducer fixed sturcture, be used for degree of will speed up sensor and be fixed on the transformer external box wall, it is characterized in that this fixed sturcture comprises base, one side of described base is bonded on the transformer external box wall, and opposite side is connected with acceleration transducer by screw rod.

2. a kind of acceleration transducer fixed sturcture according to claim 1 is characterized in that, a side of described base is by glue and transformer external box wall bonding.

3. a kind of acceleration transducer fixed sturcture according to claim 1 is characterized in that, described screw rod is double end flush end screw rod.

4. a kind of acceleration transducer fixed sturcture according to claim 1 is characterized in that the centre of described base is provided with the screw that is complementary with screw rod.

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