CN207351573U - High temperature and pressure sintering furnace thermocouple - Google Patents
High temperature and pressure sintering furnace thermocouple Download PDFInfo
- Publication number
- CN207351573U CN207351573U CN201721166935.2U CN201721166935U CN207351573U CN 207351573 U CN207351573 U CN 207351573U CN 201721166935 U CN201721166935 U CN 201721166935U CN 207351573 U CN207351573 U CN 207351573U
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- China
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- protective case
- temperature
- high temperature
- sintering furnace
- seal box
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Abstract
The utility model provides a kind of high temperature and pressure sintering furnace thermocouple, including：Seal box, the first end of seal box are equipped with positive terminal and negative terminal, and the second end of seal box is equipped with the first protective case and the second protective case, and the second protective case is sheathed on the outside of the first protective case, and a cavity is formed between the second protective case and the first protective case；Inside it is placed on the temperature-sensitive silk of the first protective case; the temperature-sensitive end of temperature-sensitive silk exposes to the one end of the first protective case away from seal box, and in cavity, the hot electrode and negative thermal electrode of temperature-sensitive silk are respectively positioned on inside seal box; and hot electrode is electrically connected with positive terminal, negative thermal electrode is electrically connected with negative terminal；Inlet channel, one end of inlet channel are connected with cavity, and the other end is connected with argon gas source, and inlet channel is equipped with flowmeter；The pressure sensor being arranged on the inner wall of inlet channel；Warning device, warning device are electrically connected with pressure sensor, it is possible to increase the service life of thermocouple.
Description
Technical field
Sintering cemented carbide equipment technical field is the utility model is related to, more particularly to a kind of high temperature and pressure sintering furnace heat
Galvanic couple.
Background technology
High temperature and pressure sintering furnace is mainly used for the production to loading as one of equipment in hard alloy blank preparation process
Product carry out vacuum high-temperature pressure sintering, produce blank finished product.What high temperature and pressure sintering furnace was relatively common at present is vacuum interval
Heating furnace, heating, cooling when its operation principle is work, is worked in units of heat, but its thermocouple needs to be subjected to rising for a long time
Temperature, cooling, and temperature change is violent, between 25-1500 degree so that constantly experience is expanded with heat and contract with cold outside thermocouple, works as thermoelectricity
During even bursting outside, extraneous air easily reacts with the temperature-sensitive silk of thermocouple, oxidation high temperature corrosion occurs, causes thermocouple mistake
Early failure, and then cause the service life of thermocouple used in high temperature and pressure sintering furnace very low.
Utility model content
The purpose of the utility model embodiment is to provide a kind of high temperature and pressure sintering furnace thermocouple, to solve high temperature height
Press the service life low-down problem of thermocouple used in sintering furnace.
In order to achieve the above object, the embodiment of the utility model provides a kind of high temperature and pressure sintering furnace thermocouple,
Including：
Seal box, the first end of seal box are equipped with positive terminal and negative terminal, and the second end of seal box is equipped with first and protects
Sheath and the second protective case, the second protective case are sheathed on the outside of the first protective case, and the second protective case and the first protective case it
Between form a cavity；
The temperature-sensitive silk of the first protective case is inside placed on, the temperature-sensitive end of temperature-sensitive silk exposes to one of the first protective case away from seal box
End, and in cavity, the hot electrode and negative thermal electrode of temperature-sensitive silk are respectively positioned on inside seal box, and hot electrode and positive terminal
Son is electrically connected, and negative thermal electrode is electrically connected with negative terminal；
Inlet channel, one end of inlet channel are connected with cavity, and the other end is connected with argon gas source, and on inlet channel
Equipped with flowmeter；
The pressure sensor being arranged on the inner wall of inlet channel；
Warning device, warning device are electrically connected with pressure sensor.
Optionally, the second protective case is ceramic protective sleeve.
Optionally, temperature-sensitive silk is W-Re temperature-sensitive silk.
The such scheme of the utility model has following beneficial effect：
In the embodiment of the utility model, monitored by flowmeter and argon gas is conveyed in the cavity of argon gas source thermoelectric couple
Flow, makes sky cavity pressure be chronically at stable pressure, so that when high temperature and pressure sintering furnace hot operation causes the of thermocouple
When two protective cases rupture, since argon gas is inert gas so that temperature-sensitive silk works under a shielding gas, and then significantly carries
The service life of high thermocouple；In addition in the second protective case rupture of thermocouple, since argon gas is inert gas, even if into high temperature
High pressure combustion freezing of a furnace will not have product in stove any influence, while the pressure in inlet channel is also detected by pressure sensor
Power, and when pressure change exceedes setting value, warning device is activated, and then easy to which high temperature and pressure sintering furnace is being cooled to room
Wen Shi, replaces thermocouple.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model specific embodiment high temperature high pressure combustion freezing of a furnace thermocouple；
Fig. 2 is the structure diagram for the high temperature and pressure sintering furnace that thermocouple is provided with the utility model specific embodiment.
Description of reference numerals：
1st, seal box；2nd, positive terminal；3rd, negative terminal；4th, the first protective case；5th, the second protective case；6th, temperature-sensitive silk；7、
Inlet channel；8th, pressure sensor；9th, warning device；10th, argon gas source；11st, flowmeter；12nd, high temperature and pressure sintering furnace；13rd, it is hot
Galvanic couple.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.
As shown in Figure 1 to Figure 2, specific embodiment of the utility model provides a kind of high temperature and pressure sintering furnace thermoelectricity
It is even, including：Seal box 1, the first end of seal box 1 are equipped with positive terminal 2 and negative terminal 3, and the second end of seal box 1 is equipped with the
One protective case 4 and the second protective case 5, the second protective case 5 are sheathed on the outside of the first protective case 4, and the second protective case 5 and first
A cavity is formed between protective case 4；The temperature-sensitive silk 6 of the first protective case 4 is inside placed on, the temperature-sensitive end of temperature-sensitive silk 6 exposes to the first guarantor
The one end of sheath 4 away from seal box 1, and in cavity, the hot electrode and negative thermal electrode of temperature-sensitive silk 6 are respectively positioned on seal box 1
Inside, and hot electrode is electrically connected with positive terminal 2, negative thermal electrode is electrically connected with negative terminal 3；Inlet channel 7, inlet channel
7 one end is connected with cavity, and the other end is connected with argon gas source 10, and inlet channel 7 is equipped with flowmeter 11；Be arranged at into
Pressure sensor 8 on the inner wall of gas passage 7；Warning device 9, warning device 9 are electrically connected with pressure sensor 8.Wherein, seal
The first end of box 1 and two opposite ends that second end is seal box 1.
Wherein, in specific embodiment of the utility model, above-mentioned first protective case 4 can be cylindrical shape protective case, the
Two protective cases 5 can be U-shaped protective case, and the cavity between the second protective case 5 and the first protective case 4 can be U-shaped cavity, so as to
Protection is provided to the temperature-sensitive silk 6 of thermocouple 13, and then ensures that the temperature-sensitive silk 6 of thermocouple 13 can normal acquisition high temperature and pressure sintering furnace
Temperature in 12.
Optionally, in specific embodiment of the utility model, above-mentioned second protective case 5 can be ceramic protective sleeve, with
Guarantee the temperature in normal acquisition high temperature and pressure sintering furnace 12.
And it is optional, in specific embodiment of the utility model, above-mentioned temperature-sensitive silk 6 can be W-Re temperature-sensitive silk, with fast
Speed, accurately collect temperature in high temperature and pressure sintering furnace 12.
Wherein, in specific embodiment of the utility model, above-mentioned hot electrode and negative thermal electrode are two of temperature-sensitive silk 6
Thermode, and the hot electrode and negative thermal electrode are mainly used for coordinating with positive terminal 2 and negative terminal 3, and thermocouple 13 is adopted
The temperature collected accesses other circuits in a manner of electric signal（Such as computer）In, so that staff is understood by other circuits
Temperature in high temperature and pressure sintering furnace 12.
Wherein, in specific embodiment of the utility model, above-mentioned seal box 1 is mainly used for being pointed to its internal component
（Such as the hot electrode and negative thermal electrode of temperature-sensitive silk 6）Sealed, to ensure that thermocouple 13 can work normally.
Wherein, in specific embodiment of the utility model, the measurement range of above-mentioned flowmeter 11 is 0 to 500 ml/min
Clock, and the flowmeter 11 is mainly used for measuring the flow of conveying argon gas in the cavity of 10 thermoelectric couple 13 of argon gas source, to ensure argon
Source of the gas 10 conveys the argon gas of 50 to 150 ml/mins into cavity, sky cavity pressure is chronically at stable pressure（Such as
1000 Pascals）, so that when 12 hot operation of high temperature and pressure sintering furnace causes the second protective case 5 of thermocouple 13 to rupture, it is empty
The argon gas of intracavitary enters high temperature and pressure sintering furnace 12, causes the pressure in inlet channel 7 to change, and due to inlet channel 7
Inner wall be equipped with pressure sensor 8, therefore the pressure in inlet channel 7 can be detected by pressure sensor 8, specifically,
When the pressure detected by pressure sensor 8 determines that the change of pressure in inlet channel 7 exceedes setting value, warning device 9
It can be activated, and then easy to when high temperature and pressure sintering furnace 12 is cooled to room temperature, be replaced to thermocouple 13, after ensuring
Continuous production.In this as an example, above-mentioned warning device 9 can be with buzzer, to reach the quick effect for realizing alarm.
It should be noted that when the argon gas in cavity enters high temperature and pressure sintering furnace 12, since argon gas is inert gas,
Therefore it, which enters high temperature and pressure sintering furnace 12, to have any influence to product in stove, reduce the wind of whole stove product rejection
Danger.
In addition, when the second protective case 5 rupture of thermocouple 13, since argon gas is inert gas so that temperature-sensitive silk 6 can be
Work under protective gas, so that the service life of thermocouple 13 be greatly improved, reduce the cost for replacing thermocouple 13, prolong
Grown the service life of whole high temperature and pressure sintering furnace 12, save high temperature and pressure sintering furnace 12 maintenance time and safeguard into
This, reduces the operating cost of high temperature and pressure sintering furnace 12.It is required for pause to produce simultaneously because replacing thermocouple 13 every time, because
This can improve the production efficiency of high temperature and pressure sintering furnace 12.
It can be seen from the above that in specific embodiment of the utility model, 10 thermoelectric couple of argon gas source is monitored by flowmeter 11
The flow of conveying argon gas, makes sky cavity pressure be chronically at stable pressure, so as to work as high temperature and pressure sintering furnace 12 in 13 cavity
When hot operation causes the second protective case 5 of thermocouple 13 to rupture, since argon gas is inert gas so that temperature-sensitive silk 6 is being protected
Work under gas, and then increase substantially the service life of thermocouple 13；In addition ruptured in the second protective case 5 of thermocouple 13
When, since argon gas is inert gas, even if will not have any influence to product in stove into high temperature and pressure sintering furnace 12, at the same time
The pressure in inlet channel 7 is also detected by pressure sensor 8, and when pressure change exceedes setting value, warning device 9 is swashed
It is living, and then easy to when high temperature and pressure sintering furnace 12 is cooled to room temperature, be replaced to thermocouple 13.
The above is the preferred embodiment of the utility model, it is noted that for the ordinary skill of the art
For personnel, on the premise of principle described in the utility model is not departed from, some improvements and modifications can also be made, these improvement
The scope of protection of the utility model is also should be regarded as with retouching.
Claims (3)
- A kind of 1. high temperature and pressure sintering furnace thermocouple, it is characterised in that including：Seal box, the first end of the seal box are equipped with positive terminal and negative terminal, and the second end of the seal box is equipped with the One protective case and the second protective case, second protective case are sheathed on the outside of first protective case, and second protection A cavity is formed between set and first protective case；The temperature-sensitive silk of first protective case is inside placed on, the temperature-sensitive end of the temperature-sensitive silk exposes to first protective case away from institute One end of seal box is stated, and in the cavity, the hot electrode and negative thermal electrode of the temperature-sensitive silk are respectively positioned on the sealing Inside box, and the hot electrode is electrically connected with the positive terminal, and the negative thermal electrode is electrically connected with the negative terminal；Inlet channel, one end of the inlet channel are connected with the cavity, and the other end is connected with argon gas source, and it is described into Gas passage is equipped with flowmeter；The pressure sensor being arranged on the inner wall of the inlet channel；Warning device, the warning device are electrically connected with the pressure sensor.
- 2. high temperature and pressure sintering furnace thermocouple according to claim 1, it is characterised in that second protective case is pottery Porcelain protective case.
- 3. high temperature and pressure sintering furnace thermocouple according to claim 1, it is characterised in that the temperature-sensitive silk is W-Re sense Warm silk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721166935.2U CN207351573U (en) | 2017-09-12 | 2017-09-12 | High temperature and pressure sintering furnace thermocouple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721166935.2U CN207351573U (en) | 2017-09-12 | 2017-09-12 | High temperature and pressure sintering furnace thermocouple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207351573U true CN207351573U (en) | 2018-05-11 |
Family
ID=62409754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721166935.2U Expired - Fee Related CN207351573U (en) | 2017-09-12 | 2017-09-12 | High temperature and pressure sintering furnace thermocouple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207351573U (en) |
-
2017
- 2017-09-12 CN CN201721166935.2U patent/CN207351573U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180511 Termination date: 20200912 |