CN205262628U - Synthetic intracavity radial temperature measuring device of cubic apparatus press - Google Patents
Synthetic intracavity radial temperature measuring device of cubic apparatus press Download PDFInfo
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- CN205262628U CN205262628U CN201521090616.9U CN201521090616U CN205262628U CN 205262628 U CN205262628 U CN 205262628U CN 201521090616 U CN201521090616 U CN 201521090616U CN 205262628 U CN205262628 U CN 205262628U
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- synthetic
- thermocouple
- cavity
- thermocouple wire
- temperature measuring
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Abstract
The utility model discloses a synthetic intracavity radial temperature measuring device of cubic apparatus press, hammer the high -pressure cavity that surrounds the back and form into shape including six the ascending top in side hammers and top, at the inside synthetic piece of pyrophillite that is equipped with of cavity, the outside of the synthetic piece of pyrophillite be pressure transmitting medium, outside -in be alloy end cap and outer ceramic pipe, heating pipe and the inner salt pipe at upper and lower both ends in proper order, the middle part of managing at the inner salt is equipped with synthetic cavity, even there is the thermocouple ceramic pipe that passes inner salt pipe and alloy end cap at the upper and lower both ends of synthetic cavity, are equipped with the thermocouple wire at the middle part of thermocouple ceramic pipe, and the upper and lower both ends at synthetic cavity are connected respectively to the thermocouple wire, the upper and lower both ends of thermocouple wire connect the anodal and thermocouple negative pole of thermocouple respectively. The utility model discloses can effectively measure the distribution of temperature in the high temperature high pressure synthesis cavity, the interior temperature of technical staff control synthesis cavity of being convenient for.
Description
Technical field
The utility model relates to a kind of temperature measuring equipment, is specifically related in the synthetic chamber of a kind of cubic hinge press radially temperature measuring equipment.
Background technology
Cubic hinge press is to pass through HYDRAULIC CONTROL SYSTEM, promote six pistons promote simultaneously six hard alloy top hammers from upper and lower, left and right, front and rear six direction exerts pressure to synthetic piece, at the inner equipment that produces high pressure of synthetic piece, wherein the flat side of a hammer of six top hammers is generally square, the synthetic high pressure chest that claims a square thus, so synthetic piece is also generally square.
Synthetic piece mainly comprises transmission medium and synthetic cavity:
A kind of solid matter that transmission medium normally directly contacts with top hammer, is generally pyrophillite, in super-pressure assembling, also can have magnesia, zirconia etc. Outside transmission medium is the square matching with top hammer flat side of a hammer size, middle for placing the hollow circuit cylinder cavity of the each assembly of synthetic cavity.
The Main Function of transmission medium is embodied in following several respects:
1, pressure transmission: top hammer applied pressure is delivered in synthetic cavity uniformly, requires transmission medium itself to there is certain mobility and Volume Changes than little;
2, sealing: in superpressure process, 12 seamed edge places that can namely synthesize from the gap of six flat side of a hammer intersections piece form fine and close sealing strip, can not extrude from gap with the material in sealing place cavity, seal up the pressure in synthetic chamber, so transmission medium also needs to have certain coefficient of internal friction simultaneously;
3, insulation: ensure that logical electrically heated time electric current only forms heating current by alloy plug to cavity from heated anvil, requires transmission medium to have good insulating properties;
4, insulation: in heating process, can produce the temperature of 500 DEG C～1800 DEG C, require transmission medium must have certain heat-insulating property concurrently.
Synthetic cavity refers to other assemblies except outside transmission medium pyrophillite, is made up of the different material of a lot of layer. Be divided into successively from outside to inside: the synthetic material in outer earthenware, heating tube, inner salt pipe or other transmission medium pipes, the synthetic cavity and the synthetic cavity that are formed by metal or other inert materials. Be laterally zygomorphic alloy plug, conduction disk from top to bottom.
In the prior art, conventionally adopt the mode of permanent power or constant current to control heating, but in HTHP process, the performance of material, structure are in continuous variation, especially the resistance of heating element heater, also in continuous variation, cannot ensure the stable of the interior temperature field of cavity, especially at larger cavity (> 15mm), cavity is from axially and radially all exist thermograde, and this can have a strong impact on the Quality and yield of synthetic material. At present existing good method to cavity vertically the temperature of diverse location measure, but also have no idea to cavity radially the temperature of diverse location carry out Measurement accuracy, cannot find out the Temperature Distribution situation in cavity, just cannot improve and synthesize high-quality product assembling. Certainly also there are some to pass through on top hammer surface or periphery dress temperature transducer, adopt the method for mathematical simulation to calculate the temperature in synthetic cavity, but large through the resultant error of analog computation, process complexity, and facility cost is high, be difficult to be applied in actual production. So we need to understand the Changing Pattern of material under HTHP, rationally control the Temperature Distribution in synthetic cavity, just need directly in measurement synthetic cavity vertically and the temperature at diverse location place radially.
Utility model content
The utility model is in order to address the above problem, the technical scheme adopting is: temperature measuring equipment radially in the synthetic chamber of a kind of cubic hinge press, comprise that top hammer and top hammer on six direction surround rear formed high-pressure chamber, be provided with the synthetic piece of pyrophillite in inside cavity, the outside of the described synthetic piece of pyrophillite is transmission medium, ecto-entad is followed successively by alloy plug and outer earthenware, heating tube and the inner salt pipe at upper and lower two ends, is provided with synthetic cavity at the middle part of inner salt pipe; The two ends up and down of synthetic cavity are connected with the thermocouple earthenware through inner salt pipe and alloy plug, are provided with thermocouple wire at the middle part of thermocouple earthenware, and thermocouple wire is connected to the two ends up and down of synthetic cavity; The two ends up and down of described thermocouple wire connect respectively thermocouple positive pole and thermocouple negative pole.
Further, described alloy plug surface has two arc-shaped slots in opposite directions, for thermocouple earthenware is drawn.
Further, described thermocouple wire is being provided with thermocouple wire is being welded to glomerate measuring junction near the part of synthetic cavity.
Further, the fluting place of described alloy plug is provided with 45 degree chamferings.
Further, the thermocouple wire in described alloy plug is encapsulated by polyfluortetraethylene pipe.
The beneficial effect that the utility model produces is:
1, thermocouple is positioned at inside cavity, can to cavity vertically and radially the temperature of diverse location carry out Measurement accuracy, instruct assembly carried out in good time improvement, can improve output and the quality of synthetic material;
2, thermocouple wire is directly drawn from the sealing strip between three adjacent top hammers, can not affect the stable of cavity temperature to heating tube perforation, thermocouple wire string diameter is 0.20～0.30mm, and more than sealing strip root size between top hammer is at least 3mm, thinnest part sealing strip is more than 1.5mm, and thermocouple wire is not drawn and can be caused obvious impact to sealing strip from sealing strip thus;
3, according to the temperature-measurement principle of thermocouple, thermocouple is divided into measuring junction and reference edge, and wherein measuring junction is for to weld glomerate point for measuring temperature by two thermocouple wires, and reference edge is the contact being connected with moisture recorder respectively. Requiring the temperature of reference edge is zero degree, higher than 25 DEG C of normal temperature. The utility model is drawn thermocouple wire from sealing strip, with in prior art, thermocouple reference edge is directly connected and is compared with top hammer, avoid reference junction temperature to change the impact on temperature-measuring results, and the reference edge of the utility model thermocouple also can be placed under the environment of 0 DEG C through some improvement, improve the accuracy of temperature-measuring results.
4, wherein plug is carbide alloy plug, can increase the pressure of cavity, and making the pressure of cavity, the highest can to reach 8GPa even higher, also can avoid breaking thermocouple wire.
Brief description of the drawings
Fig. 1 is cutaway view of the present utility model;
Fig. 2 is circuit diagram of the present utility model;
Fig. 3 is the structural representation of alloy plug in the utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1, its agent structure is to be trapezoidal by the cross section of 1, six top hammer 1 of six top hammers of HYDRAULIC CONTROL SYSTEM to structure of the present utility model, forms a high pressure synthetic cavity after surrounding, and high pressure synthetic cavity is inner synthesizes piece for pyrophillite HTHP. The synthetic piece of pyrophillite HTHP is made up of multiple parts, outermost be pyrophillite transmission medium 6, two ends up and down at the middle part of pyrophillite transmission medium 6 are provided with alloy plug 2, between upper and lower two alloy plugs 2, be respectively the outer earthenware 7 in outside, the heating tube 8 between the inner salt pipe 9 of inner side and outside earthenware 7 and inner salt pipe 9. Between alloy plug 2 and inner salt pipe 9, be provided with the conduction disk 3 of heating tube 8. The middle part of inner salt pipe 9 is the synthetic cavity 10 of dress synthetic material. Thermocouple earthenware 4 is through inner salt pipe 9 and alloy plug 2, for drawing the thermocouple wire 11 of the portion of setting within it. The measuring junction 5 of thermocouple wire 11 is spherical for what be welded into thermocouple wire, and is arranged on synthetic cavity 10 tops, for measuring the temperature of diverse location in cavity. Wherein the diameter of thermocouple wire 11 is 0.20 ~ 0.30mm, and wherein the external diameter of electroheat pair earthenware 4 is 1.5mm, and internal diameter is 0.25 ~ 0.35mm. In the time that top hammer 1 is exerted pressure to synthetic piece, the alloy plug 2 of synthetic piece upper and lower side contacts with two relative heated anvils, can apply voltage to cavity and heat. The inside of thermocouple wire 11 from axially inserting synthetic cavity by alloy plug 2, can be placed in optional position in cavity, especially can measure in synthetic chamber the radially temperature of diverse location simultaneously. Article two, electric heating thermo wires 11 connects respectively thermocouple anodal 13 and thermocouple negative pole 12.
As shown in Figure 2, wherein thermocouple wire 11 is drawn with moisture recorder and is connected by the sealing strip of three adjacent top hammers, can not damage the heating element heater of cavity, and holding chamber temperature is stable.
Innovative point of the present utility model is, thermocouple wire 11 in electroheat pair earthenware 4 is drawn to the design of alloy plug 2, as shown in Figure 3. At alloy plug 2 centers or other positions perforation electroheat pair earthenware 4 is drawn, position is depending on the temperature of thermometric cavity particular locations, and opens in opposite directions two grooves on the surface of alloy plug 2, to thermocouple wire 11 is guided to the sealing strip place between top hammer 1. At the surperficial fluting of alloy plug 2 place, design the radian chamfering of 45 °, in HTHP process, avoid thermocouple wire to be pressed down like this. Encapsulated by earthenware at axial thermocouple wire, and thermocouple wire in groove encapsulates by polyfluortetraethylene pipe, wherein the external diameter of polyfluortetraethylene pipe is 1.0mm, and internal diameter is 0.35mm; Wherein the diameter of arc-shaped slot is 2.0mm, is highly 1.0mm.
Claims (5)
1. temperature measuring equipment radially in the synthetic chamber of a cubic hinge press, comprise that top hammer and top hammer on six direction surround rear formed high-pressure chamber, be provided with the synthetic piece of pyrophillite in inside cavity, the outside of the described synthetic piece of pyrophillite is transmission medium, ecto-entad is followed successively by alloy plug and outer earthenware, heating tube and the inner salt pipe at upper and lower two ends, is provided with synthetic cavity at the middle part of inner salt pipe; It is characterized in that: the two ends up and down of synthetic cavity are connected with the thermocouple earthenware through inner salt pipe and alloy plug, are provided with thermocouple wire at the middle part of thermocouple earthenware, thermocouple wire is connected to the two ends up and down of synthetic cavity; The two ends up and down of described thermocouple wire connect respectively thermocouple positive pole and thermocouple negative pole.
2. temperature measuring equipment radially in the synthetic chamber of a kind of cubic hinge press according to claim 1, is characterized in that: alloy plug surface has two arc-shaped slots in opposite directions, for thermocouple earthenware is drawn.
3. temperature measuring equipment radially in the synthetic chamber of a kind of cubic hinge press according to claim 1, is characterized in that: described thermocouple wire is being provided with thermocouple wire is welded to glomerate measuring junction near the part of synthetic cavity.
4. temperature measuring equipment radially in the synthetic chamber of a kind of cubic hinge press according to claim 1, is characterized in that: the fluting place of described alloy plug is provided with 45 degree chamferings.
5. temperature measuring equipment radially in the synthetic chamber of a kind of cubic hinge press according to claim 1, is characterized in that: the thermocouple wire in described alloy plug is encapsulated by polyfluortetraethylene pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521090616.9U CN205262628U (en) | 2015-12-24 | 2015-12-24 | Synthetic intracavity radial temperature measuring device of cubic apparatus press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521090616.9U CN205262628U (en) | 2015-12-24 | 2015-12-24 | Synthetic intracavity radial temperature measuring device of cubic apparatus press |
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| Publication Number | Publication Date |
|---|---|
| CN205262628U true CN205262628U (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521090616.9U Expired - Fee Related CN205262628U (en) | 2015-12-24 | 2015-12-24 | Synthetic intracavity radial temperature measuring device of cubic apparatus press |
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| CN (1) | CN205262628U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267237A (en) * | 2017-12-04 | 2018-07-10 | 郑州中南杰特超硬材料有限公司 | A kind of method for measuring superhard material synthesis temperature |
| CN113267683A (en) * | 2021-05-07 | 2021-08-17 | 武汉理工大学 | In-situ measurement method for metal resistivity at high temperature and high pressure |
| WO2023193366A1 (en) * | 2022-04-07 | 2023-10-12 | 南方科技大学 | Testing device |
-
2015
- 2015-12-24 CN CN201521090616.9U patent/CN205262628U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267237A (en) * | 2017-12-04 | 2018-07-10 | 郑州中南杰特超硬材料有限公司 | A kind of method for measuring superhard material synthesis temperature |
| CN108267237B (en) * | 2017-12-04 | 2021-10-08 | 郑州中南杰特超硬材料有限公司 | Method for measuring synthesis temperature of superhard material |
| CN113267683A (en) * | 2021-05-07 | 2021-08-17 | 武汉理工大学 | In-situ measurement method for metal resistivity at high temperature and high pressure |
| WO2023193366A1 (en) * | 2022-04-07 | 2023-10-12 | 南方科技大学 | Testing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160525 Termination date: 20181224 |