CN209372812U - A kind of nitridation heat-treatment furnace air-taking system - Google Patents
A kind of nitridation heat-treatment furnace air-taking system Download PDFInfo
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- CN209372812U CN209372812U CN201822104431.9U CN201822104431U CN209372812U CN 209372812 U CN209372812 U CN 209372812U CN 201822104431 U CN201822104431 U CN 201822104431U CN 209372812 U CN209372812 U CN 209372812U
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- heat exchanger
- exchanger tube
- heat
- temperature
- treatment furnace
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Abstract
The utility model relates to a kind of nitridation heat-treatment furnace air-taking systems, including taking tracheae (1), heat exchanger tube (4), heating power supply (5), temperature measuring device and temperature control equipment, described takes tracheae (1) one end to connect with the furnace gas export for nitrogenizing heat-treatment furnace, the other end is connect with the entrance of heat exchanger tube (4), the outlet of the heat exchanger tube (4) is connect with hydrogen meter, the heating power supply (5) and temperature measuring device are connect with heat exchanger tube (4) respectively, the temperature control equipment is connect with temperature measuring device and heating power supply (5) respectively.Compared with prior art, the heat exchanger tube of the utility model is both appendix and heater, solve the problems, such as that there are temperature control is inaccurate in current collector, it is ensured that the temperature range that furnace gas temperature allows in hydrogen meter, to guarantee the accuracy of test result.
Description
Technical field
The utility model relates to the nitridation Field of Heat-treatment in metal heat treatmet production, at a kind of nitridation heat
Manage furnace air-taking system.
Background technique
When surveying hydrogen content using hydrogen meter, temperature has a great impact to the accuracy of measurement result, the difference of temperature
It can cause the blocking of gas piping.The collector industrially used at present does not have temperature control system, the temperature of taken furnace gas
The accuracy for fluctuating the hydrogen content larger, hydrogen meter is caused to be measured is poor.Therefore there should be a collector that furnace gas may be implemented
The control of temperature.
Utility model content
The purpose of this utility model be exactly in order to overcome the problems of the above-mentioned prior art and provide a kind of nitridation it is hot at
Manage furnace air-taking system.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of nitridation heat-treatment furnace air-taking system, including take tracheae, heat exchanger tube, heating power supply, temperature measuring device and temperature
Control device is spent, described takes tracheae one end to connect with the furnace gas export for nitrogenizing heat-treatment furnace, the entrance of the other end and heat exchanger tube
Connection, the outlet of the heat exchanger tube connect with hydrogen meter, the heating power supply and temperature measuring device respectively with heat exchanger tube
Connection, the temperature control equipment are connect with temperature measuring device and heating power supply respectively.
The tracheae that takes is stainless steel tube.
The diameter for taking tracheae is 10-30mm.
The heat exchanger tube is the inside and outside round tube for being disposed with heat exchanger fin.
The diameter of the heat exchanger tube is 3-5mm.
The temperature measuring device includes the temperature sensor that heat exchange tube inlet and outlet is arranged in.
Described takes between tracheae and heat exchanger tube, is tightly connected between heat exchanger tube and hydrogen meter.
Compared with prior art, the utility model has the advantage that
(1) heat exchanger tube is both appendix and heater, is solved inaccurate there are temperature control in current collector
Problem, it is ensured that the temperature range that furnace gas temperature allows in hydrogen meter, to guarantee the accuracy of test result.
(2) temperature measuring device includes the temperature sensor that heat exchange tube inlet and outlet is arranged in, and the connection of heat exchanger mouth is surveyed
Hydrogen instrument, therefore outlet temperature, that is, hydrogen meter operating temperature.Heat transfer tube outlet temperature sensor can guarantee the stability of outlet temperature
And within hydrogen meter acceptable temperature range, when outlet temperature is higher or lower than acceptable temperature range, by adjusting heat exchanger tube
Heat exchange with furnace gas makes temperature access admittance temperature range, and the degree of adjusting depends on the difference that outlet temperature exceeds permissive temperature
Value, while being influenced by inlet temperature.Therefore in heat exchange tube inlet and outlet setting temperature sensor.
(3) heat exchanger tube is the inside and outside round tube for being disposed with heat exchanger fin, is conducive to rapid cooling or the heat absorption of furnace gas.
(4) taking tracheal diameter is 10-30mm, and the diameter of heat exchanger tube is 3-5mm, and the diameter of heat exchanger tube influences heat exchanger tube
Resistance, to influence the power of heat exchanger tube and heat exchanger tube adjusts the range of temperature, suitable diameter is conducive to rapidly enter heat
Equilibrium state.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the present embodiment air-taking system；
Appended drawing reference:
1 is to take tracheae；2 be the first thermometer；3 be second temperature meter；4 be heat exchanger tube；5 be heating power supply.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.The present embodiment is with the utility model
Implemented premised on technical solution, the detailed implementation method and specific operation process are given, but the guarantor of the utility model
Shield range is not limited to the following embodiments.
Embodiment
A kind of nitridation heat-treatment furnace air-taking system, including take tracheae 1, heat exchanger tube 4, heating power supply 5, temperature measuring device and
Temperature control equipment takes 1 one end of tracheae to connect with the furnace gas export for nitrogenizing heat-treatment furnace, and the entrance of the other end and heat exchanger tube 4 connects
It connects, the outlet of heat exchanger tube 4 is connect with hydrogen meter, and heating power supply 5 and temperature measuring device are connect with heat exchanger tube 4 respectively, temperature control
Device processed is connect with temperature measuring device and heating power supply 5 respectively.
Tracheae 1 is taken to be made of heat-resisting stainless pipe, for taking gas out of nitridation heat-treatment furnace, taking the diameter of tracheae 1 is 10-
30mm。
Heat exchanger tube 4 is the inside and outside metal circular tube for being disposed with heat exchanger fin, for the heat of furnace gas quickly to scatter and disappear or from heat exchange
Piece transmits heat to the furnace gas in pipe, makes to export the temperature range that furnace gas temperature reaches hydrogen meter requirement.The outlet of heat exchanger tube 4 with
Hydrogen meter is directly connected to.The diameter of heat exchanger tube 4 is 3-5mm, is process by electrothermal alloy.
Temperature measuring device includes the first thermometer 2 and second temperature meter 3 that heat exchange tube inlet and outlet is arranged in.
It takes between tracheae 1 and heat exchanger tube 4, be tightly connected between heat exchanger tube 4 and hydrogen meter.
The method that gas is taken using nitridation heat-treatment furnace air-taking system, including following below scheme:
By taking tracheae 1 to enter heat exchanger tube 4, furnace gas passes in flow process with tracheae 1 and heat exchanger tube 4 is taken furnace gas in pipe
Heat makes furnace gas temperature drop to the temperature range of hydrogen meter requirement；
When heat exchanger tube 4, which exports furnace gas temperature, is lower than hydrogen meter set temperature, the circuit communication at 4 both ends of heat exchanger tube, electric current
Joule heat is generated when heat exchanger tube 4 flows through, 4 temperature of heat exchanger tube is increased, exchanges heat between furnace gas and heat exchanger tube 4, make furnace gas temperature
It increases；
When heat exchanger tube 4, which exports furnace gas temperature, is higher than hydrogen meter set temperature, the circuit at 4 both ends of heat exchanger tube is disconnected, heat exchange
Heat exchange between pipe 4 and the outer air of pipe makes the reduction of 4 temperature of heat exchanger tube, when 4 temperature of heat exchanger tube is lower than furnace gas temperature, furnace gas and heat exchange
Pipe 4 exchanges heat, and reduces furnace gas temperature.
In the both ends of heat exchanger tube connection power supply, circuit communication, generating Joule heat in heat exchanger tube makes heat exchanger tube temperature liter
It is high.There is the furnace gas of flowing in heat exchanger tube, pipe external environment is air.When the temperature of heat exchanger tube, which is higher or lower than, manages interior furnace gas temperature
Or when environment temperature, heat exchange occurs between surrounding air between the furnace gas in heat exchanger tube and pipe.
Heat exchange between heat exchanger tube 4 and furnace gas belongs to forced-convection heat transfer, and the heat exchange with air outside pipe belongs to free convection
Heat exchange.The temperature difference between heat exchanger tube 4 and furnace gas and air is adjusted by the conducting and disconnection of electric current in control heat exchanger tube 4.When
When system reaches thermal equilibrium state, the temperature difference between heat exchanger tube 4 and furnace gas and air will be remained unchanged, furnace gas temperature and tube wall
Temperature reaches stable, thus the purpose that the temperature for realizing control into the furnace gas of hydrogen meter is constant.
Claims (7)
1. a kind of nitridation heat-treatment furnace air-taking system, which is characterized in that including taking tracheae (1), heat exchanger tube (4), heating power supply
(5), temperature measuring device and temperature control equipment, the furnace gas export for taking tracheae (1) one end and nitrogenizing heat-treatment furnace connect
It connects, the other end is connect with the entrance of heat exchanger tube (4), and the outlet of the heat exchanger tube (4) is connect with hydrogen meter, the heating electricity
Source (5) and temperature measuring device are connect with heat exchanger tube (4) respectively, the temperature control equipment respectively with temperature measuring device and
Heating power supply (5) connection.
2. a kind of nitridation heat-treatment furnace air-taking system according to claim 1, which is characterized in that described takes tracheae (1)
For stainless steel tube.
3. a kind of nitridation heat-treatment furnace air-taking system according to claim 1, which is characterized in that described takes tracheae (1)
Diameter be 10-30mm.
4. a kind of nitridation heat-treatment furnace air-taking system according to claim 1, which is characterized in that the heat exchanger tube (4)
For the inside and outside round tube for being disposed with heat exchanger fin.
5. a kind of nitridation heat-treatment furnace air-taking system according to claim 1, which is characterized in that the heat exchanger tube (4)
Diameter be 3-5mm.
6. a kind of nitridation heat-treatment furnace air-taking system according to claim 1, which is characterized in that the temperature measures dress
Set the temperature sensor including heat exchange tube inlet and outlet is arranged in.
7. a kind of nitridation heat-treatment furnace air-taking system according to claim 1, which is characterized in that described takes tracheae (1)
It is tightly connected between heat exchanger tube (4), between heat exchanger tube (4) and hydrogen meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822104431.9U CN209372812U (en) | 2018-12-14 | 2018-12-14 | A kind of nitridation heat-treatment furnace air-taking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822104431.9U CN209372812U (en) | 2018-12-14 | 2018-12-14 | A kind of nitridation heat-treatment furnace air-taking system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209372812U true CN209372812U (en) | 2019-09-10 |
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ID=67832903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822104431.9U Active CN209372812U (en) | 2018-12-14 | 2018-12-14 | A kind of nitridation heat-treatment furnace air-taking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209372812U (en) |
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2018
- 2018-12-14 CN CN201822104431.9U patent/CN209372812U/en active Active
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