CN204128642U - High precision level measuring magnetic grid device - Google Patents

Abstract

The utility model relates to a high-precision water level measuring magnetic grid device, which comprises a glass barrel, a water pipe, a glass barrel cover plate and a float. The upper end of the glass barrel is refitted with a glass barrel cover, and a float is installed coaxially floating inside the glass barrel, and a vertical magnetic scale is fixed coaxially on the upper end of the float, and the upper part of the magnetic scale is made by the middle part of the glass barrel cover. The hole protrudes, and a magnetic ruler reading head is fixed on the glass barrel cover plate on one side of the magnetic scale ruler. The utility model combines the high progress performance of the magnetic grating ruler displacement measurement with the liquid level float to measure the liquid level, which improves the accuracy of measuring the water level, has a simple structure, low cost, strong anti-interference ability, and can accurately measure the water level. The accuracy of use in the calibration of volume pools in hydraulic machinery laboratories can reach ≤0.1mm.

Description

High-precision water level measurement magnetic grid device

technical field

The utility model belongs to the technical field of analysis and measurement control, in particular to a high-precision water level measuring magnetic grid device.

Background technique

At present, the commonly used measurement techniques are: manual reading method, buoyancy principle method, pressure method and sensor measurement method. Among them, manual reading and traditional mechanical methods have low accuracy, while sensor method has high accuracy, but it is expensive and inconvenient to maintain. The magnetic scale is a fully enclosed displacement measurement sensor, usually used in small and medium-sized boring and milling machines. The magnetic scale can well adapt to the working environment, has high reliability, strong anti-interference ability, high precision, low cost and convenient maintenance.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a high-precision water level measuring magnetic grid device with scientific and reasonable design, simple structure and high measurement accuracy.

The utility model solves its technical problem and realizes by taking the following technical solutions:

A high-precision water level measuring magnetic grid device, including a glass barrel, a water pipe, a glass barrel cover plate and a float. The lower end of the cylindrical glass barrel is connected to a water pipe, and the other end of the water pipe is used to connect to the liquid level container to be measured. The upper end of the glass barrel is refitted There is a glass barrel cover plate, and a float is coaxially installed in the glass barrel. The hole protrudes, and a magnetic ruler reading head is fixed on the glass barrel cover plate on one side of the magnetic scale ruler.

Moreover, the magnetic ruler reading head is a reading device that cooperates with the magnetic scale, and sends out pulse signals according to the relative position change between the magnetic ruler reading head and the magnetic ruler.

Advantage and positive effect of the present utility model are:

The utility model combines the high-precision performance of the magnetic grating scale displacement measurement with the liquid level float to measure the liquid level, which improves the accuracy of measuring the water level, has a simple structure, low cost, strong anti-interference ability, and can accurately measure the water level. The accuracy of use in the calibration of volume pools in hydraulic machinery laboratories can reach ≤0.1mm.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Reference numerals: 1 is a magnetic ruler reading head, 2 is a cover plate of a glass barrel, 3 is a magnetic scale, 4 is a glass barrel, 5 is a float, 6 is a connecting pipe, and 7 is a liquid level container to be measured.

Detailed ways

The utility model will be further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the utility model.

A high-precision water level measuring magnetic grid device, including a glass barrel 4, a water pipe 6, a glass barrel cover plate 2, and a float 5. The lower end of the cylindrical glass barrel is connected to a water pipe, and the other end of the water pipe is used to communicate with the liquid level container 7 to be measured. , the liquid level container to be measured and the glass barrel form a connector through a water pipe; the upper end of the glass barrel is refitted with a glass barrel cover plate, and a float is arranged coaxially floating in the glass barrel, and the float changes with the change of the water level. The innovation of the utility model in:

A vertical magnetic scale 3 is fixed coaxially on the upper end of the float. The upper part of the magnetic scale protrudes from the through hole made in the middle of the glass barrel cover. A magnetic scale is fixed on the glass barrel cover on one side of the magnetic scale Head 1, the magnetic scale reading head is a reading device that cooperates with the magnetic scale, and can send out pulse signals according to the relative position changes between the magnetic scale reading head and the magnetic scale.

The working principle of the utility model is:

When measuring the water level, the bypass pipe principle is adopted, and a water pipe is used to connect the volume of the liquid level to be measured with the glass barrel. The float in the glass barrel is fixed to the magnetic scale, and the water level change is equal to the distance that the float moves up and down. Fixed on the top of the glass barrel, the change of the relative position between the magnetic ruler reading head and the magnetic ruler can send out a pulse signal, which can be converted into a digital signal after data acquisition and processing, so as to obtain the measurement result of the water level. It is adopted in the calibration of the volume pool of the national energy key laboratory of small and medium hydropower equipment, and good results have been obtained.

Although the embodiments and drawings of the utility model are disclosed for the purpose of illustration, those skilled in the art can understand that various replacements, changes and modifications can be made without departing from the spirit and scope of the utility model and the appended claims. It is possible, therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims (2)

1. a high precision level measuring magnetic grid device, comprise glass tank, water pipe, glass tank cover plate and float, columniform glass tank lower end is communicated with a water pipe, this water pipe other end is for being communicated with liquid level container to be measured, the repacking of glass tank upper end has a glass tank cover plate, in glass tank, coaxial floating is provided with a float, it is characterized in that: described float upper end is coaxially fixed with a vertical magnetic railings ruler, this magnetic railings ruler top is stretched out by through hole made in the middle part of glass tank cover plate, the glass tank cover plate of magnetic railings ruler side is fixed with a magnetic scale read head.

2. high precision level measuring magnetic grid device according to claim 1, is characterized in that: described magnetic scale read head is the reading device coordinating magnetic railings ruler, sends pulse signal according to the change of relative position between magnetic scale read head and magnetic scale.