CN218865810U - High-temperature in-situ detection device for X-ray diffractometer - Google Patents

Abstract

The utility model discloses a high-temperature in-situ detection device of an X-ray diffractometer.A base lifting assembly is arranged on the diffractometer, the rear end of a tank body assembly is connected with a lifting pad in the base lifting assembly, and the front end of the tank body assembly is connected with an upper cover in a tank body cover assembly; the heat preservation cavity assembly is arranged in the tank body assembly; the heating chamber assembly is arranged in the heat insulation cavity assembly, and a connecting pipe at the tail part of the heating chamber assembly is connected with a gas distribution joint in the tank body cover assembly; sample inlet holes for samples to pass through are formed in the lower ends of the tank body assembly and the heat preservation cavity assembly; the tank body and the tank body cover are provided with cooling water channels; the sample rack assembly is fixed at the lower end of the tank body assembly, and a sample to be detected is placed in a sample rack in the sample rack assembly and is conveyed into the heating chamber assembly; the utility model discloses novel structure, the stable performance, convenient to use has improved the temperature range of heating chamber greatly. Because the heat preservation cavity is in a sealed form, the heating speed is high, and the heat preservation is durable.

Description

High-temperature in-situ detection device for X-ray diffractometer

Technical Field

The utility model relates to an X-ray diffractometer specifically is an X-ray diffractometer high temperature normal position detection device.

Background

At present, with the continuous development of new materials, more and more new materials are applied to various fields. In the field of X-ray diffraction, many new materials can be heated at high temperature and then the change of the crystal structure can be researched under different temperature conditions. The existing high-temperature detection equipment for the X-ray diffractometer has limited detection capability, and the detection of ultra-high-temperature samples with special requirements on certain materials cannot meet the increasing detection requirements at the present stage, so that the upgrading and modification of a high-temperature detection device for the X-ray diffractometer are urgently needed to meet the use requirements of more and more detections at present.

SUMMERY OF THE UTILITY MODEL

The ability to present X-ray diffractometer high temperature environment sample detection is limited, can not reach the requirement like sample heating temperature, and rate of heating is slow, a series of problems such as the heat preservation effect is not good, the utility model discloses abandoned the traditional mode that X-ray diffractometer high temperature environment sample's detection adopted amber gold plate heating in the past, carried out transformation once to current X-ray diffractometer high temperature detection device.

The utility model adopts the technical proposal that:

a high-temperature in-situ detection device for an X-ray diffractometer comprises a heating chamber assembly, a heat preservation cavity assembly, a tank body cover assembly, a sample frame assembly and a base lifting assembly;

the base lifting assembly is arranged on the diffractometer, the rear end of the tank body assembly is connected with a lifting pad in the base lifting assembly, and the front end of the tank body assembly is connected with an upper cover in the tank body cover assembly; the heat preservation cavity assembly is arranged in the tank body assembly; the heating chamber assembly is arranged in the heat insulation cavity assembly, and a connecting pipe at the tail part of the heating chamber assembly is connected with a gas distribution joint in the tank body cover assembly; sample inlet holes for samples to pass through are formed in the lower ends of the tank body assembly and the heat preservation cavity assembly; the tank body and the tank body cover are provided with cooling water channels; the sample rack assembly is fixed at the lower end of the tank body assembly, and a sample to be detected is placed in a sample rack in the sample rack assembly and is conveyed into the heating chamber assembly.

The heating chamber assembly comprises a heating shell, an armored electric heating wire, a fixing clamp, a connecting pipe and an ambient temperature thermocouple; the armored electric heating wire is fixed in the heating shell by a plurality of fixing clamps, a connecting pipe is welded at the tail of the heating shell, and an environment temperature thermocouple for measuring the environment temperature is installed in the connecting pipe; the anode and cathode wires of the armored electric heating wire are led out of the outside along the connecting pipe; the heating housing is provided with a sample inlet hole through which the sample passes.

The heat preservation cavity assembly comprises a heat preservation shell A, a beryllium sheet A, a heat preservation shell B, a beryllium sheet B and a connecting column; the beryllium piece A is installed on the upper portion of the heat preservation shell A, the heat preservation shell B is installed inside the heat preservation shell A, the beryllium piece B is installed on the upper portion of the heat preservation shell B, and the three connecting columns are welded at the front end of the heat preservation shell A; the heat preservation cavity assembly is fixed inside the tank body through the connecting column.

The tank assembly comprises a tank body, a window cover, a window sealing film, a guide pillar, a water inlet joint A, a water outlet joint A and a tank body air inlet pipe II; two window covers are arranged above the tank body, and a window sealing film is clamped between the tank body and the window cover at the window between the tank body and the window covers, so that incident rays are ensured, and meanwhile, the sealing performance of the whole tank body is ensured; two guide posts are arranged below the tank body, a water channel is arranged in the tank body, the water channel is provided with a water inlet joint A and a water outlet joint A, and when the tank is used, the tank body is cooled by water, so that the tank body is always in a cooled state in a high-temperature use process; and a second tank body air inlet pipe is arranged in the tank body and is connected with a second air outlet connector in the tank body cover assembly, and the entering air can enter the most central position of the tank body.

The tank body cover assembly comprises an upper cover, a water channel cover plate, a water channel column, a water channel jacket, a gas distribution joint, a junction box, a pressure release valve, a main gas inlet joint, a gas outlet joint I, a gas outlet joint II, a water inlet joint B, a water outlet joint B, a heat insulation plate A and a heat insulation plate B; the upper cover and the water channel cover plate are welded together, the inner hole of the upper cover is welded with a water channel column, the outer side of the water channel column is welded with a water channel outer sleeve, the end part of the water channel outer sleeve is welded with a gas distribution joint, and the gas distribution joint is connected with a junction box; a pressure release valve is arranged at the end part of the upper cover, and a main air inlet joint, an air outlet joint I and an air outlet joint II are welded on the air distribution joint; a water inlet joint B is arranged on the water channel cover plate, and a water outlet joint B is arranged on the water channel outer sleeve; cooling water flows in from the water inlet connector B, passes through the upper cover, the water channel column and the water channel jacket, and flows out from the water outlet connector B, so that the whole tank cover assembly is ensured to be in a cooling state all the time; the other end of the upper cover is connected with a heat insulation board A, and a heat insulation board B is connected with the heat insulation board A.

The sample rack assembly comprises a sample rack, a heat-insulating cover, a lower cover, a guide sleeve, a hand-screwed nut, a bracket, a locking nut, a sample rack air inlet pipe I and a sample table thermocouple; the sample rack, the heat preservation cover and the bracket are connected together, and the bracket is arranged in the lower cover and is fixed by the locking nut; the lower part of the lower cover is welded with a first sample frame air inlet pipe which is connected with a first air outlet joint in the tank body cover assembly, and the inlet gas can enter the sample frame; a sample stage thermocouple for measuring the temperature of a sample is arranged behind the lower cover; the heat preservation cover corresponds to the sample inlet hole; the guide sleeve is matched with a guide post on the tank body assembly, and four hand-screwed nuts in the sample frame assembly connect the sample frame assembly with the tank body assembly.

The base lifting assembly comprises a base, crossed roller guide rails, lifting pads, clamping blocks and a differential head; wherein two crossed ball guide rails are arranged on the base, the crossed ball guide rails correspond to the guide rail grooves of the lifting pad, a clamping block is arranged below the base, the clamping block is provided with a screw hole, the differential head is screwed in the screw hole, and the ejector rod of the differential head is abutted against the lower end of the lifting pad.

The shape of the armored electric heating wire is coiled in the heating shell according to the internal shape of the heating shell, so that the armored electric heating wire is fully distributed in the whole heating shell except for the light inlet hole and the sample inlet hole.

Be equipped with beryllium piece A and beryllium piece B in heat preservation chamber assembly window department, the beryllium piece neither influences the entering of X ray, also makes the heat preservation chamber assembly become an airtight environment simultaneously, plays the effect of heat preservation.

A second tank air inlet pipe in the tank assembly and a first sample rack air inlet pipe in the sample rack assembly can bring gas into the tank assembly and the sample rack assembly; the gases are inert gases and have a protective effect on a sample; and the temperature of the heating chamber assembly can be reduced by liquid nitrogen and the like.

Water channels are respectively arranged in the tank body assembly and the tank body cover assembly, so that the tank body assembly and the tank body cover assembly are always in a cooling state in a high-temperature use process.

The sample is inserted into the canister from the bottom of the canister assembly through the sample holder assembly.

The utility model has the advantages of it is following:

1. the structure is innovative, the traditional concept is abandoned, the appearance is attractive, the performance is stable, and the use is convenient;

2. the traditional Perkin plate heating mode is abandoned, and the armored electric heating wire is used as a heating element, so that the temperature is sensitive, the detection precision is improved, and the controllable temperature range of the heating chamber is also improved;

3. the heat preservation cavity adopts a sealing mode, so that the heating speed is high, and the heat preservation effect is good;

4. two thermocouples are adopted to sense the temperature, one thermocouple records the temperature of the electric heating wire, and the other thermocouple records the temperature of the heating chamber, so that the heating temperature is ensured to be more accurate;

5. the detection requirement of the sample under the high-temperature environment (more than 1000 ℃) is met;

6. the sample is put into the tank body from the bottom of the tank body assembly through the sample rack assembly, so that the sample is conveniently put into the tank body, and the detection efficiency is improved;

7. the tank body and the tank cover are provided with cooling water to cool the tank body and the tank cover, so that an operator is prevented from being scalded; meanwhile, inert gas can be introduced into the tank body to protect the sample;

drawings

FIG. 1 is a sectional view of the overall structure of the present invention;

FIG. 2 is a schematic diagram showing the positional relationship between the apparatus and a diffractometer;

FIG. 3 is a right side view of FIG. 1;

FIG. 4 is a top view of FIG. 1;

FIG. 5 is a schematic view of a heating chamber assembly;

FIG. 6 is a bottom view of FIG. 5;

FIG. 7 isbase:Sub>A cross-sectional view A-A of FIG. 5;

FIG. 8 is a cross-sectional view B-B of FIG. 5;

FIG. 9 is a top view of the insulated chamber assembly;

FIG. 10 isbase:Sub>A sectional view A-A of FIG. 9;

FIG. 11 is a bottom view of FIG. 10;

FIG. 12 is a front view of the canister assembly;

FIG. 13 is a left side view of FIG. 12;

FIG. 14 is a top view of FIG. 12;

FIG. 15 is a front view of the can lid assembly;

FIG. 16 is a left side elevation view of FIG. 15;

FIG. 17 is a front view of the sample holder assembly;

FIG. 18 is a left side elevation view of FIG. 17;

FIG. 19 is a front view of the base lift assembly;

FIG. 20 isbase:Sub>A cross-sectional view taken at the position A-A in FIG. 19;

wherein, 1 is a heating chamber assembly, 101 is a heating shell, 102 is an armored electric heating wire, 103 is a fixing clamp, 104 is a connecting pipe, and 105 is an ambient temperature thermocouple; 2, a heat preservation cavity assembly, 201, 202, 203, 204 and 205 are respectively a heat preservation shell A, a beryllium sheet B and a connecting column; 3, a tank assembly, 301, a tank, 302, a window cover, 303, a window sealing film, 304, a guide post, 305, a water inlet joint A,306, a water outlet joint A and 307, namely a tank air inlet pipe II; 4, a tank cover assembly, 401, 402, a water channel cover plate, 403, a water channel column, 404, a water channel jacket, 405, a gas distribution connector, 406, a junction box, 407, a pressure release valve, 408, a total gas inlet connector, 409, a gas outlet connector I, 410, a gas outlet connector II, 411, a water inlet connector B,412, a water outlet connector B,413, a heat insulation plate A and 414, wherein the tank cover assembly is arranged on the tank body; 5, a sample holder assembly, 501, 502, a heat-insulating cover, 503, a lower cover, 504, a guide sleeve, 505, a hand-screwed nut, 506, a support, 507, a locking nut, 508, a first sample holder air inlet pipe and 509, a sample table thermocouple; 6 is a base lifting assembly, 601 is a base, 602 is a crossed roller guide rail, 603 is a lifting pad, 604 is a clamping block, and 605 is a differential head; 7 is a sample to be detected; and 8 is a diffractometer.

Detailed Description

The invention is further explained by combining the attached drawings of the specification.

As shown in fig. 1 to 4, a high-temperature in-situ detection device for an X-ray diffractometer comprises a heating chamber assembly 1, a heat preservation chamber assembly 2, a tank assembly 3, a tank cover assembly 4, a sample holder assembly 5 and a base lifting assembly 6;

the base lifting assembly 6 is arranged on the diffractometer 8, the rear end (left side in figure 1) of the tank assembly 3 is connected with a lifting pad 603 in the base lifting assembly 6, and the front end (right side in figure 1) of the tank assembly 3 is connected with an upper cover 401 in the tank cover assembly 4; the heat preservation cavity assembly 2 is arranged in the tank body assembly 3 through a connecting column 205; the heating chamber assembly 1 is arranged in the heat preservation cavity assembly 2, and the connecting pipe 104 at the tail part of the heating chamber assembly 1 is connected with the gas distribution joint 405 in the tank body cover assembly; the lower ends of the tank body assembly 3 and the heat preservation cavity assembly 2 are provided with sample inlet holes 100 for samples to pass through; the sample holder assembly 6 is fixed at the lower end of the tank assembly 3, and the sample 7 to be measured is placed in the sample holder 501 of the sample holder assembly and is sent into the heating chamber assembly 2. Two guide sleeves 504 arranged on the sample holder assembly 5 are respectively matched with the two guide posts 304 at the lower end of the tank assembly 3 to slide, the tank assembly 3 and the sample holder assembly 5 are positioned up and down, and the sample holder assembly 5 is connected with the tank assembly 3 by four hand-screwed nuts 505 in the sample holder assembly 5.

As shown in fig. 5 to 8, the heating chamber assembly 1 includes a heating housing 101, a sheathed electric heating wire 102, a fixing clip 103, a connection pipe 104, and an ambient temperature thermocouple 105. The upper portion of the heating shell 101 is provided with a light inlet 200, an armored electric heating wire 102 is installed inside the heating shell 101, the armored electric heating wire 102 is fixed inside the heating shell 101 through a plurality of fixing clamps 103, the tail portion of the heating shell 101 is welded with a connecting pipe 104, and an ambient temperature thermocouple 105 for measuring ambient temperature is installed inside the connecting pipe 104. Meanwhile, the positive and negative lines of the armored electric heating wire 102 are also led out along the connecting pipe 104.

As shown in fig. 9 to 11, the heat preservation cavity assembly 2 comprises a heat preservation shell a201, a beryllium sheet a202, a heat preservation shell B203, a beryllium sheet B204 and a connecting column 205; wherein, the upper part of the heat preservation shell A201 is provided with a beryllium sheet A202, the heat preservation shell B203 is arranged in the heat preservation shell A201, the upper part of the heat preservation shell B203 is provided with a beryllium sheet B204, and the front end of the heat preservation shell A201 is welded with three connecting columns 205.

As shown in fig. 12 to 14, the tank assembly 3 includes a tank 301, a window cover 302, a window sealing film 303, a guide pillar 304, a water inlet joint a305, a water outlet joint a306, and a tank air inlet pipe two 307. Wherein, two window covers 302 are arranged above the tank body 301, and a window sealing film 303 is clamped at the window between the tank body 301 and the window covers 302, thereby ensuring the sealing performance of the whole tank body 301 while ensuring incident rays. Two guide posts 304 are arranged below the tank body 301, a water inlet joint A305 and a water outlet joint A306 are arranged behind the tank body 301, one is used for water inlet and the other is used for water outlet, a water channel is arranged in the tank body 301, and when the tank body 301 is used, the tank body 301 is always in a cooling state due to cooling of water during high-temperature use. And a second tank inlet pipe 307 is arranged in the tank 301 and is connected with a second outlet connector 410 in the tank cover assembly 4, and the inlet gas can enter the most central position of the tank 301.

As shown in fig. 15 to 16, the tank cover assembly 4 includes an upper cover 401, a waterway cover plate 402, a waterway column 403, a waterway jacket 404, a gas distribution connector 405, a junction box 406, a pressure release valve 407, a main gas inlet connector 408, a gas outlet connector 409, a gas outlet connector 410, a water inlet connector B411, a water outlet connector B412, a heat insulation plate a413, and a heat insulation plate B414. The upper cover 401 and the water channel cover plate 402 are welded together, the inner hole of the upper cover 401 is welded with a water channel column 403, the outer side of the water channel column 403 is welded with a water channel outer sleeve 404, the end part of the water channel outer sleeve 404 is welded with a gas distribution connector 405, and the gas distribution connector 405 is connected with a junction box 406. The end part of the upper cover 401 is provided with a pressure relief valve 407, and a main air inlet joint 408, an air outlet joint I409 and an air outlet joint II 410 are welded on the air distribution joint 405. The water channel cover plate 402 is provided with a water inlet joint B411, and the water channel outer sleeve 404 is provided with a water outlet joint B412. The cooling water flows in from the water inlet joint B411, passes through the upper cover 401, the water channel column 403 and the water channel jacket 404, and flows out from the water outlet joint B412, so that the whole tank cover assembly 4 is ensured to be in a cooling state all the time. The other end of the upper cover 401 is connected with a heat insulation board A413, and a heat insulation board B414 is connected with the heat insulation board A413.

As shown in fig. 17 to 18, the sample holder assembly 5 includes a sample holder 501, a heat-insulating cover 502, a lower cover 503, a guide sleeve 504, a hand-screwed nut 505, a bracket 506, a locking nut 507, a sample holder air inlet pipe one 508, and a sample stage thermocouple 509. The sample rack 501, the heat preservation cover 502 and the bracket 506 are connected together, the bracket 506 is arranged inside the lower cover 503 and is fixed by the locking nut 507, the lower part of the lower cover 503 is welded with a sample rack inlet pipe I508 which is connected with an outlet connector I409 in the tank body cover assembly 4, and the inlet gas can enter the position of the sample rack 501. Behind the lower cover 503, a stage thermocouple 509 for measuring the temperature of the sample is installed.

As shown in fig. 19-20, the base lift assembly 6 includes a base 601, a cross roller guide 602, a lift pad 603, a clamp block 604, and a differential head 605. Wherein two crossed ball guide rails 602 are arranged on the base 601, a lifting pad 603 is arranged on the crossed ball guide rails 602, a clamping block 604 is arranged below the base 601, a differential head 605 is arranged in the clamping block 604, and a top rod of the differential head 605 is in contact fit with the lower end of the lifting pad 603.

The heating chamber assembly 1 is heated by the armored electric heating wire 102 to make the whole heating chamber assembly 1 reach high temperature. The shape of the armored electric heating wire 102 is coiled in the heating shell 101 according to the internal shape of the heating shell 101, so that the armored electric heating wire 102 is uniformly distributed in the whole heating shell 101 except for the light inlet hole and the sample inlet hole 100.

Be equipped with beryllium piece A202 and beryllium piece B204 in heat preservation chamber assembly 2 light inlet 200 department, the beryllium piece does not influence the entering of X ray, also makes heat preservation chamber assembly 2 become a confined environment simultaneously, plays the effect of heat preservation.

The second tank inlet pipe 307 in the tank assembly 3 and the first sample holder inlet pipe 508 in the sample holder assembly 5 can bring gas into the tank assembly 3 and the sample holder assembly 5, and the gas can be inert gas and has a protection effect on the sample. And liquid nitrogen and the like can be used for cooling the heating chamber assembly 1.

Water channels are respectively arranged in the tank body assembly 3 and the tank body cover assembly 4, so that the tank body assembly 3 and the tank body cover assembly 4 are always in a cooling state in a high-temperature use process.

The sample is inserted into the canister 301 through the sample holder assembly 5 from the bottom sample inlet hole of the canister assembly 3.

The utility model discloses operation process as follows:

firstly, a sample 7 to be measured is placed on a sample holder 501, a sample holder assembly 5 is inserted into a tank 301 in a tank assembly 3, four hand-screwed nuts 505 are screwed down to fix the sample holder assembly 5 on the tank assembly 3, and a differential head 605 is adjusted to a position with a number of 0, namely, the upper plane of the sample holder 501 is horizontal to a diffraction plane of a diffractometer 8. The armored electric heating wire 102 is electrified and heated, meanwhile, the water cooling system starts to work, the tank body assembly 3 and the tank body cover assembly 4 are cooled and protected, and after the temperature is raised to the required temperature, rays can be started to perform detection and analysis. If necessary, the total inlet connector 408 is filled with the desired gas, which fills the entire canister assembly 3. After the use, when the temperature is reduced to the room temperature, the four hand nuts 505 are unscrewed, the sample holder assembly 5 is pulled out from the tank body 301, and the sample 7 to be measured is taken out.

Claims (8)

1. The utility model provides an X-ray diffractometer high temperature normal position detection device which characterized in that: comprises a heating chamber assembly, a heat preservation cavity assembly, a tank body cover assembly, a sample frame assembly and a base lifting assembly;

the base lifting assembly is arranged on the diffractometer, the rear end of the tank body assembly is connected with a lifting pad in the base lifting assembly, and the front end of the tank body assembly is connected with an upper cover in the tank body cover assembly; the heat preservation cavity assembly is arranged in the tank body assembly; the heating chamber assembly is arranged in the heat insulation cavity assembly, and a connecting pipe at the tail part of the heating chamber assembly is connected with a gas distribution joint in the tank body cover assembly; the lower ends of the tank body assembly and the heat preservation cavity assembly are provided with sample inlet holes for samples to pass through; the tank body and the tank body cover are provided with cooling water channels; the sample rack assembly is fixed at the lower end of the tank body assembly, and a sample to be detected is placed in a sample rack in the sample rack assembly and is conveyed into the heating chamber assembly.

2. The high-temperature in-situ detection device for the X-ray diffractometer according to claim 1, characterized in that: the heating chamber assembly comprises a heating shell, an armored electric heating wire, a fixing clamp, a connecting pipe and an ambient temperature thermocouple; the armored electric heating wire is fixed in the heating shell by a plurality of fixing clamps, the tail of the heating shell is welded with a connecting pipe, and an environment temperature thermocouple for measuring environment temperature is installed in the connecting pipe; the anode and cathode wires of the armored electric heating wire are led out of the outside along the connecting pipe; the heating housing is provided with a sample inlet hole through which the sample passes.

3. The high-temperature in-situ detection device for the X-ray diffractometer according to claim 1, characterized in that: the heat preservation cavity assembly comprises a heat preservation shell A, a beryllium sheet A, a heat preservation shell B, a beryllium sheet B and a connecting column; the beryllium piece A is installed on the upper portion of the heat preservation shell A, the heat preservation shell B is installed inside the heat preservation shell A, the beryllium piece B is installed on the upper portion of the heat preservation shell B, and the three connecting columns are welded at the front end of the heat preservation shell A; the heat preservation cavity assembly is fixed in the tank body through the connecting column.

4. The high-temperature in-situ detection device for the X-ray diffractometer according to claim 1, characterized in that: the tank assembly comprises a tank body, a window cover, a window sealing film, a guide pillar, a water inlet joint A, a water outlet joint A and a tank body air inlet pipe II; two window covers are arranged above the tank body, and a window sealing film is clamped between the tank body and the window cover at the window between the tank body and the window covers, so that incident rays are ensured, and meanwhile, the sealing performance of the whole tank body is ensured; two guide posts are arranged below the tank body, a water channel is arranged in the tank body, and the water channel is provided with a water inlet joint A and a water outlet joint A; and a second tank body air inlet pipe is arranged in the tank body and is connected with a second air outlet connector in the tank body cover assembly.

5. The high-temperature in-situ detection device for the X-ray diffractometer according to claim 1, characterized in that: the tank body cover assembly comprises an upper cover, a water channel cover plate, a water channel column, a water channel jacket, a gas distribution joint, a junction box, a pressure release valve, a main gas inlet joint, a gas outlet joint I, a gas outlet joint II, a water inlet joint B, a water outlet joint B, a heat insulation plate A and a heat insulation plate B; the upper cover and the water channel cover plate are welded together, a water channel column is welded in an inner hole of the upper cover, a water channel outer sleeve is welded on the outer side of the water channel column, a gas distribution joint is welded at the end part of the water channel outer sleeve, and the gas distribution joint is connected with a junction box; a pressure release valve is arranged at the end part of the upper cover, and a main air inlet joint, an air outlet joint I and an air outlet joint II are welded on the air distribution joint; a water inlet joint B is arranged on the water channel cover plate, and a water outlet joint B is arranged on the water channel outer sleeve; the other end of the upper cover is connected with a heat insulation board A, and a heat insulation board B is connected with the heat insulation board A.

6. The high-temperature in-situ detection device for the X-ray diffractometer according to claim 1, characterized in that: the sample holder assembly comprises a sample holder, a heat-insulating cover, a lower cover, a guide sleeve, a hand-screwed nut, a bracket, a locking nut, a sample holder air inlet pipe I and a sample table thermocouple; the sample rack, the heat preservation cover and the bracket are connected together, and the bracket is arranged in the lower cover and is fixed by the locking nut; the lower part of the lower cover is welded with a first sample rack air inlet pipe which is connected with a first air outlet joint in the tank body cover assembly, and the entering gas can enter the position of the sample rack; a sample stage thermocouple for measuring the temperature of a sample is arranged behind the lower cover; the heat preservation cover corresponds to the sample inlet hole; the guide sleeve is matched with a guide post on the tank body assembly, and four hand-screwed nuts in the sample rack assembly are used for connecting the sample rack assembly with the tank body assembly.

7. The high-temperature in-situ detection device for the X-ray diffractometer according to claim 1, characterized in that: the base lifting assembly comprises a base, crossed roller guide rails, lifting pads, clamping blocks and a differential head; wherein two crossed ball guide rails are arranged on the base, the crossed ball guide rails correspond to the guide rail grooves of the lifting pad, a clamping block is arranged below the base, the clamping block is provided with a screw hole, the differential head is screwed in the screw hole, and the ejector rod of the differential head is abutted against the lower end of the lifting pad.

8. The high-temperature in-situ detection device for the X-ray diffractometer according to claim 1, characterized in that: the shape of the armored electric heating wire is that the armored electric heating wire is coiled inside the heating shell according to the internal shape of the heating shell, so that the armored electric heating wire is uniformly distributed in the whole heating shell except for the light inlet hole and the sample inlet hole.

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