High and low temperature furnace detection device for diffractometer

Abstract

The utility model discloses a high and low temperature furnace detection device for a diffractometer, relates to the technical field of X-ray diffraction analysis, and aims to solve the problems of separation, large size and complex operation of the existing high and low temperature detection equipment. The base is fixed to the diffractometer, the support supports the furnace body assembly, the furnace body assembly is integrally designed and integrates an armored heating wire and a liquid nitrogen air channel, high-temperature detection is achieved by electrifying the heating wire, low-temperature detection is achieved by introducing liquid nitrogen, and an annular water channel circulating cooling water is arranged in the furnace body to control the temperature of the outer wall. An arc-shaped through hole with a beryllium sheet is formed in the top to ensure X-ray penetration and reduce energy attenuation, the furnace cover is matched with a semicircular groove through three sets of locking screws, the furnace cover can be rapidly opened and closed only by rotating, and heat is effectively isolated and leakage is prevented through the design of a heat insulation plate and a sealing ring. The device has the high-temperature and low-temperature environment rapid switching capability, is small in size, is adaptive to a small-sized diffractometer, is safe and convenient to operate, and improves the detection efficiency and precision.

Description

Technical Field

[0001] This utility model relates to the field of X-ray diffraction, specifically a furnace detection device that can be used in both high-temperature and low-temperature environments. Background Technology

[0002] In the field of X-ray diffraction analysis, the temperature environment of a sample has a significant impact on the characterization of material microstructure. For example, high-temperature environments can be used to study phase transitions, thermal expansion behavior, and high-temperature stability, while low-temperature environments are helpful in analyzing superconducting properties and low-temperature phase changes. In traditional techniques, high-temperature and low-temperature detection usually rely on separate equipment: high-temperature detection requires a dedicated heating furnace to heat the sample via resistance wire or induction heating; low-temperature detection requires a liquid nitrogen or liquid helium cooling system to cool the sample by injecting a cryogenic medium. However, high-temperature furnaces and low-temperature devices are independent, occupying a large space and making it difficult to adapt to the compact structure requirements of benchtop or small diffractometers. Especially in laboratory settings with limited space, switching between multiple devices is cumbersome and inefficient. Existing equipment cannot handle both high and low temperature environments simultaneously, requiring frequent changes or adjustments to the devices, leading to interruptions in the experimental process and increasing the risk of sample contamination or damage. Traditional heating furnaces have low cooling efficiency, and the outer wall of the furnace can easily burn operators at high temperatures; insufficient sealing of low-temperature devices can easily lead to condensation or medium leakage, affecting detection accuracy and experimental safety. Utility Model Content

[0003] To address the aforementioned problems, this utility model discloses a high and low temperature furnace detection device for a diffractometer.

[0004] The specific technical solution is as follows:

[0005] A high and low temperature furnace detection device for a diffractometer includes a base, a support, and a furnace assembly;

[0006] The base is used to be mounted on the diffractometer, the bracket is fixed to the front end of the base, and the furnace assembly is mounted on the bracket;

[0007] The furnace assembly includes:

[0008] The lower furnace body and the upper furnace body are fixedly connected, and the lower furnace body is positioned and connected to the support.

[0009] An annular water channel is located within the upper furnace body; a furnace cover is installed on the top of the upper furnace body, with an arc-shaped through hole at the top covered by a beryllium plate; a locking screw is located on the top of the upper furnace body, and the semi-circular groove of the furnace cover engages with the locking screw by rotating the furnace cover; a sample holder is installed on the heat insulation plate inside the lower furnace body, and the sample holder contains an armored heating wire device, with a sample box placed on the sample holder to hold the sample to be tested; a thermocouple passes through the lower furnace body, the upper furnace body, and the sample holder, extending to below the sample box; a liquid nitrogen gas channel includes an inlet connector on the left side of the lower furnace body and an outlet connector on the right side; a cooling water interface includes an inlet connector on the left side of the upper furnace body and an outlet connector on the right side.

[0010] The lower furnace body has sealing rings A on both sides of the water channel end face, and the upper furnace body has sealing ring B between the top and the furnace cover.

[0011] The locking screws are in three sets, symmetrically distributed on the top of the upper furnace body.

[0012] The furnace cover is provided with a lug at the junction with the upper furnace body. The semi-circular groove of the lug matches the locking screw, and the locking screw is located on one side of the semi-circular groove of the lug.

[0013] The advantages of this invention are: 1. The furnace body has an ingenious structure, enabling operation at both high and low temperatures. 2. The overall structure is compact, making it suitable for use in diffractometers, especially in benchtop diffractometers with limited space. 3. When loading and unloading samples, it is not necessary to completely remove the locking screws; simply loosen them slightly and rotate the furnace lid to open it and remove the sample box. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the present invention;

[0015] Figure 2 This is a front view of the present invention;

[0016] Figure 3 This is the left view of the present invention;

[0017] Figure 4 This is a top view of the present invention;

[0018] Figure 5 This is a left sectional view of the furnace assembly;

[0019] Figure 6 This is a front sectional view of the furnace assembly;

[0020] Figure 7 A schematic diagram of the entire device installation;

[0021] Figure 8 This is a schematic diagram of the furnace cover installation.

[0022] Figure 9 This is a diagram illustrating the water intake process.

[0023] Figure 10 This is a schematic diagram of the air intake. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] A high and low temperature furnace detection device for a diffractometer includes a base 1, a support 2, and a furnace body assembly 3;

[0026] The base 1 is used to be mounted on the diffractometer, the bracket 2 is fixed to the front end of the base 1, and the furnace assembly 3 is mounted on the bracket 2;

[0027] The furnace assembly 3 includes:

[0028] The lower furnace body 301 and the upper furnace body 302 are fixedly connected, and the lower furnace body 301 is positioned and connected to the bracket 2.

[0029] An annular water channel 303 is disposed within the upper furnace body 302; a furnace cover 305 is installed on the top of the upper furnace body 302, the top of the furnace cover 305 has an arc-shaped through hole and is covered with a beryllium plate 307; a locking screw 308 is disposed on the top of the upper furnace body 302, and the semi-circular groove of the furnace cover 305 is engaged with the locking screw 308 by rotating the furnace cover 305; a sample holder 310 is installed on the heat insulation plate 309 inside the lower furnace body 301, and the sample holder 310 is provided with armored heating wires. The device 311 includes a sample box 312 placed on a sample rack 310 to hold the sample to be tested; a temperature measuring thermocouple 313 passing through the lower furnace body 301, the upper furnace body 302 and the sample rack 310, extending to the area below the sample box 312; a liquid nitrogen gas channel including an inlet connector 316 on the left side of the lower furnace body 301 and an outlet connector 317 on the right side; and a cooling water interface including a water inlet connector 314 on the left side of the upper furnace body 302 and a water outlet connector 315 on the right side.

[0030] The lower furnace body 301 has sealing rings A304 on both sides of the water channel end face, and the upper furnace body 302 has sealing rings B306 between the top and the furnace cover 305.

[0031] The locking screws 308 are in three groups, symmetrically distributed on the top of the upper furnace body 302.

[0032] The furnace cover 305 is provided with a lug 305a at the abutment of the upper furnace body 302. The semi-circular groove M of the lug matches the locking screw 308, and the locking screw 308 is provided on one side of the semi-circular groove M of the lug.

[0033] The working principle of this utility model is as follows: First, the sample is placed in the sample box 312, and the sample box 312 is placed on the sample holder 310. The furnace cover 305 is placed above the upper furnace body 302. The furnace cover 305 is rotated so that its semi-circular groove M is engaged with the locking screw 308. Then, the three locking screws 308 are tightened with a wrench, and the sample can be subjected to X-ray detection and analysis. When high-temperature testing of the sample is required, cooling water is introduced through the water inlet connector 314. While the cooling water circulates inside the water channel 303, the outside of the furnace body remains at room temperature. The armored heating wire device 311 is energized to raise the temperature inside the furnace body. Once a certain temperature is reached, the sample can be subjected to high-temperature X-ray diffraction analysis. When low-temperature testing of the sample is required, liquid nitrogen is introduced through the air inlet connector 316. The entire device is a sealed whole. During the air intake process, the entire furnace cavity is filled with liquid nitrogen. Once a certain temperature is reached, the sample can be subjected to low-temperature X-ray diffraction analysis. After the test is completed, loosen the three locking screws 308 slightly with a wrench, turn the furnace cover 305 to the right by one angle, remove the furnace cover 305, and then remove the sample box 312.

Claims

1. A high and low temperature furnace detection device for a diffractometer, characterized by, It comprises a base (1), a support (2) and a furnace assembly (3); The base (1) is used for installation on a diffractometer, the support (2) is fixed to the front end of the base (1), and the furnace assembly (3) is installed on the support (2); The furnace assembly (3) comprises: a lower furnace body (301) and an upper furnace body (302) fixedly connected, wherein the lower furnace body (301) is positioned and connected with the support (2); an annular water channel (303) arranged in the upper furnace body (302); a furnace cover (305) installed on the top of the upper furnace body (302), wherein the top of the furnace cover (305) is provided with a circular-arc-shaped through hole and is covered with a beryllium sheet (307); locking screws (308) are arranged on the top of the upper furnace body (302), and the semicircular grooves of the furnace cover (305) are matched with the locking screws (308) by rotating the furnace cover (305); a sample holder (310) is installed on the heat insulation plate (309) in the lower furnace body (301), the sample holder (310) is provided with an armored heating wire device (311) therein, a sample box (312) is placed on the sample holder (310); a temperature measuring thermocouple (313) penetrates through the lower furnace body (301), the upper furnace body (302) and the sample holder (310) and extends to below the sample box (312); a liquid nitrogen gas channel comprises an air inlet joint (316) arranged on the left side of the lower furnace body (301) and an air outlet joint (317) arranged on the right side of the lower furnace body (301); a cooling water interface comprises a water inlet joint (314) arranged on the left side of the upper furnace body (302) and a water outlet joint (315) arranged on the right side of the upper furnace body (302).

2. The high and low temperature furnace detection device for a diffractometer according to claim 1, characterized in that: sealing rings A (304) are arranged on both sides of the water channel end face of the lower furnace body (301), and sealing rings B (306) are arranged between the top of the upper furnace body (302) and the furnace cover (305).

3. The high-low temperature furnace detection device for diffractometer according to claim 1, characterized in that: The locking screws (308) are three groups and are symmetrically distributed on the top of the upper furnace body (302).

4. The high-low temperature furnace detection device for diffractometer according to claim 1, characterized in that: The furnace cover (305) is provided with a lug (305a) at the abutment position with the upper furnace body (302), the semicircular groove (M) of the lug is matched with the locking screw (308), and the locking screws (308) are all arranged on one side of the semicircular groove (M) of the lug.

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