Filamentous sample thermal dilatometer

Abstract

The utility model discloses a filiform sample thermal dilatometer, which comprises a base, a lifting module mounted on the base, a moving plate fixedly connected with a moving end of the lifting module, an electric heating furnace fixedly mounted on the moving plate, a quartz tube support arranged corresponding to a heating cavity of the electric heating furnace, and a fixing seat fixedly mounted at the bottom of the quartz tube support. The top of the quartz tube support is provided with a first through hole for the filiform sample to penetrate through, one end of the filiform sample is fixedly connected with the sample fixing clamp, the other end of the filiform sample penetrates through the first through hole and extends into the quartz tube support to be fixedly connected with the upper end of the quartz ejector rod, and the bottom of the quartz ejector rod makes contact with the displacement sensor. According to the filamentous sample thermal dilatometer, one end of a filamentous sample is fixed on the top surface of a quartz tube bracket, a quartz ejector rod is suspended at the other end of the filamentous sample, the bottom of the quartz ejector rod is contacted with a displacement sensor, the filamentous sample is heated to expand, change data is obtained by the displacement sensor through displacement of the quartz ejector rod, and the data is swelling capacity of the filamentous sample.

Description

Technical Field

[0001] The utility model relates to a testing instrument, in particular to a thermal dilatometer for filamentary specimens. Background Art

[0002] A thermal expansion coefficient measuring instrument is used to measure the expansion and contraction properties of metallic materials, ceramics, glass, glazes, refractories and other non-metallic materials during heating and roasting at high temperatures. The existing dilatometers mainly adopt the push rod method. After the electric furnace is heated, the specimen in the furnace chamber expands, and the test rod against the end of the specimen generates an equal amount of expansion, which is accurately measured by an inductive displacement sensor and an instrument and displayed by the instrument, mainly used to measure the thermal expansion coefficient of rigid materials. At present, there is no thermal dilatometer on the market for measuring filamentary materials. In view of this, it is necessary to develop a dilatometer for filamentary specimens. Summary of the Invention

[0003] Aiming at the problems existing in the above-mentioned prior art, the utility model provides a thermal dilatometer suitable for filamentary specimens.

[0004] The technical solution adopted by the utility model is as follows: a thermal dilatometer for filamentary specimens, including a base, on which a lifting module is installed. The moving end of the lifting module is fixedly connected with a moving plate, and an electric heating furnace is fixedly installed on the moving plate. A quartz tube support is correspondingly arranged in the heating cavity of the electric heating furnace. The bottom of the quartz tube support is fixedly installed on the base through a fixing seat. A through hole one for the filamentary specimen to pass through is opened at the top of the quartz tube support. One end of the filamentary specimen is fixedly connected with a specimen fixing clip, and the other end passes through the through hole one and extends into the quartz tube support and is fixedly connected with the upper end of a quartz push rod arranged in the quartz tube support. The bottom of the quartz push rod contacts with a displacement sensor.

[0005] Further, a slot communicating with the inside of the quartz tube support is arranged on the side wall of the upper part of the quartz tube support.

[0006] Further, a through hole two is opened on the side wall of the upper part of the quartz push rod near the top end, and a through hole three communicating with the through hole two is opened at the center of the top end of the quartz push rod.

[0007] Further, an instrument panel is arranged on the front side plate of the base.

[0008] The thermal dilatometer for filamentary specimens of the present utility model has one end of the filamentary specimen fixed to the top surface of the quartz tube bracket, and the other end suspends a quartz top rod. The bottom of the quartz top rod contacts a displacement sensor. During measurement, the lifting module drives the electric heating furnace to descend to an appropriate position to heat the filamentary specimen. The filamentary specimen expands when heated, and the quartz top rod connected thereto undergoes displacement in the vertical direction, and the change data is obtained through the displacement sensor in contact with the quartz top rod. This data is the expansion amount of the filamentary specimen. The present utility model facilitates the fixed connection of the filamentary specimen through the structural design of the quartz tube bracket and the quartz top rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a schematic diagram of the overall structure of the present utility model.

[0010] Figure 2 is a schematic diagram of the structure of the quartz tube bracket of the present utility model.

[0011] Figure 3 is a schematic diagram of the structure of the quartz top rod of the present utility model.

[0012] Figure 4 is a schematic cross-sectional view of the through-hole of the quartz top rod of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] For ease of understanding the present utility model, the following will describe the present utility model more comprehensively and meticulously in conjunction with the accompanying drawings of the specification and preferred embodiments. However, the protection scope of the present utility model is not limited to the following specific embodiments.

[0014] As Figure 1 shown, a thermal dilatometer for filamentary specimens of this embodiment includes a base 1, and electronic components required for measurement are installed inside the base 1. A lifting module 11 is installed on the base 1, and a moving plate 10 is fixedly connected to the moving end of the lifting module 11. An electric heating furnace 9 is fixedly installed on the moving plate 10. A quartz tube bracket 6 is correspondingly arranged in the heating cavity of the electric heating furnace 9. The bottom of the quartz tube bracket 6 is fixedly installed on the base 1 through a fixing seat 4. A through-hole 601 for the filamentary specimen 7 to pass through is opened at the top of the quartz tube bracket 6. One end of the filamentary specimen 7 is fixedly connected to a specimen fixing clip 8, and the other end passes through the through-hole 601 and extends into the quartz tube bracket 6 and is fixedly connected to the upper end of a quartz top rod 5 arranged inside the quartz tube bracket 6. The bottom of the quartz top rod 5 contacts a displacement sensor 3.

[0015] An instrument panel 2 is arranged on the front side plate of the base 1. Instruments for controlling the lifting of the lifting module 11, a working current and voltage meter for the electric furnace, a power switch, etc. are arranged on the instrument panel 2. A communication interface is also provided on the base 1, and it is connected to a host computer through the communication interface. The computer can control the lifting of the electric heating furnace 9, set the heating rate, collect temperature and displacement data, and display the expansion curve and expansion data in real time.

[0016] As Figure 2 shown, for the convenience of connecting the filamentary specimen 7 and the quartz push rod 5, a slot 602 communicating with the inside of the quartz tube bracket 6 is provided on the upper side wall of the quartz tube bracket 6.

[0017] As Figure 3 、 Figure 4 shown, for the convenience of fixing the filamentary specimen 7 and the quartz push rod 5 and ensuring that the quartz push rod 5 is in a natural vertical state without contacting the inner wall of the quartz tube bracket 6, in this embodiment, a through hole two 501 is provided on the side wall of the upper part of the quartz push rod 5 near the top, and a through hole three 502 communicating with the through hole two 501 is provided at the center of the top of the quartz push rod 5. The filamentary specimen 7 passes through the through hole three 502 and is fixedly connected to the quartz push rod 5 through an auxiliary fixing member disposed in the through hole two 501.

[0018] With the help of the teachings present in the foregoing specification and the associated drawings, those skilled in the art to which the present invention pertains will envision many modifications and other embodiments of the present invention. Accordingly, it is to be understood that the present invention is not limited to the specific embodiments disclosed, and that modifications and other embodiments are considered to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. A thermal expansion instrument for a filamentary sample, comprising a base (1), characterized in that: A lifting module (11) is installed on the base (1), and a moving end of the lifting module (11) is fixedly connected to a moving plate (10), and an electric heating furnace (9) is fixedly installed on the moving plate (10). A quartz tube support (6) is arranged corresponding to the heating chamber of the electric heating furnace (9), and the bottom of the quartz tube support (6) is fixedly installed on the base (1) through a fixing seat (4). A through hole (601) is opened on the top of the quartz tube support (6) for the filamentary sample (7) to pass through. One end of the filamentary sample (7) is fixedly connected to the sample fixing clamp (8), and the other end passes through the through hole (601) to extend into the quartz tube support (6) and is fixedly connected to the upper end of a quartz top rod (5) arranged in the quartz tube support (6), and the bottom of the quartz top rod (5) is in contact with the displacement sensor (3).

2. A filamentary sample thermal expansion instrument as claimed in claim 1, characterized in that: A groove (602) communicating with the interior of the quartz tube support (6) is provided on the side wall of the upper portion of the quartz tube support (6).

3. A thermal expansion instrument for filamentary samples as claimed in claim 1, characterized in that: A second through hole (501) is provided on the side wall of the upper part of the quartz top rod (5) near the top, and a third through hole (502) communicating with the second through hole (501) is provided at the center of the top of the quartz top rod (5).

4. A filamentary sample thermal expansion instrument as claimed in claim 1, characterized in that: A dashboard (2) is provided on the front side plate of the base (1).

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