CN111721657A

CN111721657A - Array type magnetic core arrangement structure of analytical instrument

Info

Publication number: CN111721657A
Application number: CN201910220020.2A
Authority: CN
Inventors: 孙立鑫
Original assignee: Beijing Eternal Experimental Equipment Co ltd
Current assignee: Beijing Eternal Experimental Equipment Co ltd
Priority date: 2019-03-22
Filing date: 2019-03-22
Publication date: 2020-09-29

Abstract

The invention discloses an array type magnetic core arrangement structure of an analytical instrument. The magnetic core units arranged in an array manner mainly comprise strong magnets; the enameled coil unit mainly comprises a plurality of groups of coils with the same structure; the balance beam unit mainly comprises a balance beam rod of the whole set of balance analytical instrument and an optical element. The array magnetic core arrangement structure can ensure that the uniformity of the temperature in the heating furnace body is unchanged after the sample amount of the analytical instrument is increased; poor repeatability of experimental results caused by thermal convection disturbance is avoided; the thermogravimetric measurement range of the analytical instrument can be enlarged, and the linearity of the thermogravimetric measurement result is ensured.

Description

Array type magnetic core arrangement structure of analytical instrument

Technical Field

The invention relates to an array type magnetic core arrangement structure of an analytical instrument.

Background

In the fields of chemical research and engineering, a thermogravimetric analysis instrument is an important analysis instrument, and the current domestic thermobalance for researching and analyzing materials such as coal, petroleum and the like has the following defects: the thermal analyzer can cause the heating furnace body to be enlarged, the temperature uniformity in the furnace body to be reduced and the length of a constant temperature section of the furnace body to be reduced after the sample amount is increased; thermal convection disturbance can cause poor repeatability of experimental results; the measurement error generated by the thermal buoyancy is obviously increased after the volume of the sample is increased; the mechanical thermal balance electromagnetic adjusting coil has a small moment, so that the thermal gravimetric measurement range is limited, and the measurement nonlinearity is caused when the coil is large.

Disclosure of Invention

The invention provides an array type magnetic core arrangement structure of an analytical instrument, which comprises magnetic core units arranged in an array type, enameled coil units and balance beam units. The magnetic core units arranged in an array manner mainly comprise strong magnets; the enameled coil unit mainly comprises a plurality of groups of coils with the same structure; the balance beam unit mainly comprises a balance beam rod of the whole set of analytical instrument and an optical element. The array magnetic core arrangement structure can enlarge the thermogravimetric measurement range of an analytical instrument and ensure the linearity of the thermogravimetric measurement result. The technical scheme for solving the problems is as follows:

an array type magnetic core arrangement structure of an analytical instrument comprises magnetic core units arranged in an array type, enameled coil units and balance beam units. The magnetic core units arranged in an array manner mainly comprise strong magnets; the enameled coil unit mainly comprises a plurality of groups of coils with the same structure; the balance beam unit mainly comprises a balance beam rod and an optical element of the whole set of analysis instrument, and the beam system comprises an optical element grating for adjusting balance, a beam for stabilizing a coil and a weight plate hanging hook. The thermogravimetric measurement range of the analytical instrument can be enlarged, and the linearity of the thermogravimetric measurement result is ensured.

The magnetic core structure arranged in an array manner mainly comprises 8 cylindrical strong magnetic permanent magnets. The outer walls of the 8 magnetic core rods are smooth and have the same thickness and length.

The enameled coil unit mainly comprises 16 enameled wire coils with the same texture, wherein the 16 enameled wire coils are divided into two layers, the two layers are respectively 8 at the upper part and the lower part, the two layers are equidistantly and fixedly jointed at two ends of 8 magnetic core rods, and the two layers are tightly fixed on a beam of a balance through 4 groups of magnetic cores.

Compared with the traditional thermal balance, the invention has the following advantages:

1. the specific number of the magnetic core groups, the size of the magnetic cores and the size of the inner diameter and the outer diameter of the coil can ensure that the quality measurement range of the sample can be effectively enlarged on the basis of not increasing the heating furnace by the analysis instrument.

2. The balance can be rapidly and accurately detected by using the grating as a detector.

3. The stability of the sample hanging basket after the sample amount is increased can be ensured. Thereby analyzing the thermogravimetric noise of the instrument.

Drawings

FIG. 1 is a schematic view of the structure of the present invention

Detailed Description

The structure of the invention is shown in figure 1, wherein 1 is a coil framework, 2 is an enameled wire coil, 3 is a magnetic core, 4 is a magnetic core frame, 5 is a cross beam, 6 is a grating, and 7 is a counterweight plate suspension hook.

An array type magnetic core arrangement structure of an analytical instrument comprises magnetic core units arranged in an array type, enameled coil units and balance beam units. The array-type distributed magnetic core units mainly comprise strong magnets, and the group number, the size and the inner and outer diameter sizes of the magnetic cores 3 and the coils are fixed uniformly; the enameled coil unit mainly comprises a plurality of groups of coils with the same structure; the balance beam unit mainly comprises a balance beam rod 5 and an optical element of the whole set of analysis instrument, and the beam system comprises an optical element grating 6 for adjusting balance, a beam for stabilizing a coil and a weight plate hanging hook 7. The array magnetic core arrangement structure can ensure that the uniformity of the temperature in the heating furnace body is unchanged after the sample amount of the analytical instrument is increased; poor repeatability of experimental results caused by thermal convection disturbance is avoided; the thermogravimetric measurement range of the analytical instrument can be enlarged, and the linearity of the thermogravimetric measurement result is ensured.

The invention can realize the detection and analysis of a large amount of samples at high temperature. The mass measurement error caused by gas flow generated by a sample with larger mass can be eliminated, the effective contact of various gases and the sample is ensured, and the reaction efficiency of the analysis instrument is increased. The sample amount can reach 0-500 g.

Claims

1. An array type magnetic core arrangement structure of an analytical instrument comprises magnetic core units arranged in an array type, enameled coil units and balance beam units.

2. The array of magnetic core units of claim 1, wherein the array of magnetic core units consists essentially of a strong magnet; the enameled coil unit mainly comprises a plurality of groups of coils with the same structure; the balance beam unit mainly comprises a balance beam rod and an optical element of the whole set of analysis instrument, and the beam system comprises an optical element grating for adjusting balance, a beam for stabilizing a coil and a weight plate hanging hook.

3. An analytical instrument array of magnetic core units as claimed in claim 1, wherein: the magnetic cores arranged in an array form mainly comprise 8 cylindrical strong magnetic permanent magnets. The outer walls of the 8 magnetic core rods are smooth and have the same thickness and length.

4. An enamelled coil unit for analytical instruments according to claim 1, characterized in that: the enameled coil unit consists of 16 enameled wire coils with the same texture, the 16 enameled wire coils are divided into two layers, the two layers are respectively 8 at the upper part and the lower part, are equidistantly jointed and fixed at the two ends of 8 magnetic core rods, and are tightly fixed on a beam of the balance through 4 groups of magnetic cores.

5. The balance beam unit of an analytical instrument of claim 1, wherein: the balance beam unit mainly comprises a balance beam rod of the whole set of analysis instrument and an optical element, and the beam system comprises an optical element grating for adjusting balance, a beam for stabilizing a coil and a weight plate suspension hook.