CN106940085B - A kind of fire-suppressant gas Quick uniform heating device - Google Patents
A kind of fire-suppressant gas Quick uniform heating device Download PDFInfo
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- CN106940085B CN106940085B CN201710145543.6A CN201710145543A CN106940085B CN 106940085 B CN106940085 B CN 106940085B CN 201710145543 A CN201710145543 A CN 201710145543A CN 106940085 B CN106940085 B CN 106940085B
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- stainless steel
- steel tube
- gas
- temperature
- regulation pipe
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
- F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
- F24H9/1863—Arrangement or mounting of electric heating means
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
Abstract
The invention discloses a kind of fire-suppressant gas Quick uniform heating devices, including stainless steel tube (1) and it is located at the entrance (2) at steel pipe both ends and exports (3), the first regulation pipe (4) that the self-locking grooves of stainless steel tube and inlet connect in a self-locking manner, the second regulation pipe (5) being connect threadably with stainless steel tube outlet internal screw thread, the metal heating wire (6) of stainless steel tube outer wall winding, its spacing is 5 millimeters, and in stainless steel tube pipe with fast gas heating module (7) made of copper-silver mixed metal, the K-type thermocouple sensor of stainless steel tube outlet end welding detects mouth (8), the internal screw thread (9) of stainless steel tube outlet, the insertion groove (10) of stainless steel tube entrance, also there are the self-locking grooves (11) vertical with insertion groove.The present apparatus can heat gas while gas quickly flows, while keep gas averagely heated, and exit gas temperature is uniform, can control the exit gas temperature difference within 1 DEG C in the case where set temperature is lower than 200 DEG C, extends the service life of sensor.
Description
Technical field
The present invention relates to the technical field of gas extinguishing agent heat treatment, in particular to a kind of fire-suppressant gas Quick uniform adds
Thermal.
Background technique
There is very high demand to heat gas in modern industrial production, such as is needed in melt-blown process empty with a large amount of heat
Gas；The well washing system of oil well needs a large amount of hot nitrogen.The accurate of gas, especially fire-suppressant gas physical parameter is measured often
Need to measure its parameter under mobility status, this just needs to use, and precision is very high (can accurately measure 2 significant digits number
Value) sensor obtain high-precision data.And if these sensors measure when, gas temperature is uneven, will lead to
The inaccuracy of measurement data and the service life for reducing sensor.For certain gases (as breathed out dragon 1301), and need to measure
Its data under condition of different temperatures, this just needs to heat gas, but the thermal coefficient of gas is generally relatively low,
Thermal coefficient of the common gas at 0 DEG C only relies on the convection current of gas itself and leads in the case of 0.01W/ (mc), low flow velocity
What heat reached internal temperature is uniformly distributed the waiting time for generally requiring to grow very much.Industrially, common for the device of heat gas
Such as heated using resistance stove heating, steam stove heating, boiler, the shortcomings that this kind of equipment be required heating distance and plus
The hot time is all long, and environmental pollution is serious, and structure is complicated, is unfavorable for installing and using, and to the gas in flow at high speed
Heating effect is bad, inefficient.
Summary of the invention
According to the needs of above-mentioned actual conditions, and the problem of reality, the purpose of the present invention is to provide one kind
Fire-suppressant gas Quick uniform heating device, structure is simple, contamination-free, can fill in a short period of time to by heating
The gas set uniformly is heated, and the precision of sensor measurement is improved, and extends the service life of sensor.
The present invention solves above-mentioned technical problem and is adopted the technical scheme that: a kind of gas Quick uniform heating device, packet
Include stainless steel tube, the first regulation pipe, the second regulation pipe, metal heating wire, fast gas heating module, sensor detection mouth, spiral shell
Line, insertion groove and self-locking grooves；Wherein, it is located at the entrance at steel pipe both ends with the regulation pipe that stainless steel tube is connect in the form of self-locking and goes out
Mouthful, the outlet at steel pipe both ends, the metal of stainless steel tube outer wall winding are located at the regulation pipe that thread forms are connect with stainless steel tube
Heater strip, fast gas heating module is in the pipe of stainless steel tube；Stainless steel tube outlet end is welded with sensor detection mouth, stainless
There is screw thread in steel pipe exit；There is insertion groove in stainless steel tube inlet, also has the self-locking grooves vertical with insertion groove；The present apparatus can be with
Gas is heated while gas quickly flows, while keeping gas averagely heated, it is uniform to reach exit gas temperature.
Further, first regulation pipe connected in a manner of self-locking structure, main function are adjusted in stainless steel tube
The length of the fast gas heating module in portion and fixed fast gas heating module.
Further, second regulation pipe for being threadedly coupled mode and connecting, main function is to fix stainless steel tube
Internal fast gas heating module.
Further, the metal heating wire of the stainless steel tube outer wall winding, can be right when gas passes through stainless steel tube
Gas is heated.
Further, the fast gas heating module inside the stainless steel tube, can when gas passes through stainless steel tube,
Expand the surface area of heat convection, enhances heat transfer effect.
Further, the sensor detects mouth, can connect a K-type thermocouple at detection mouth, measure exit gas
Temperature.
Further, the insertion groove in the stainless steel exit and the self-locking grooves vertical with insertion groove, can be according to need
Fix the first regulation pipe of inlet different length.
Working principle of the present invention: after metal heating wire is powered on stabilization, fast gas heating module and stainless steel tube pipe
Wall is in set temperature, after gas enters stainless steel tube, fast gas heating module is reached by regulation pipe, due to quick air
Body heating module has very big surface-to-volume ratio, in a short period of time gas adequately can be exchanged heat, together
When keep uniform temperature.Sensor, which detects, places a thermocouple in mouth, the gas temperature in exit and anti-can be monitored in real time
It is fed at heater, to control the heating power of heating wire, and then controls the temperature of heating stainless steel tube.Of the invention
Good effect of heat exchange, has excellent sealing performance, and gas will not be revealed.
The advantages of the present invention over the prior art are that:
(1), heating efficiency of the present invention is high, and heating speed is fast, can uniformly heat to gas.
(2), the present invention is easy to use, and structure is simple, cleanliness without any pollution.
Detailed description of the invention
Fig. 1 is cross section structure schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of exit regulation pipe；
Fig. 3 is the structural schematic diagram of inlet regulation pipe；
Fig. 4 is stainless steel tube structural schematic diagram；
Fig. 5 is stainless steel tube left side view；
Fig. 6 is fast gas heating module cellular construction schematic diagram；
Fig. 7 is fast gas heating module unit left side view；
Fig. 8 is circuit connection diagram.
Specific embodiment
With reference to the accompanying drawing and specific embodiment further illustrates the present invention.
As shown in Figure 1, a kind of fire-suppressant gas Quick uniform heating device of the present invention, including stainless steel tube 1 and it is located at two
The entrance 2 at end and outlet 3, gas enter stainless steel tube 1, the side being threadedly coupled with 1 internal screw thread 9 of stainless steel tube by entrance 2
The first regulation pipe 4, the second regulation pipe 5 of formula connection, to the position of fixed fast gas heating module 7,1 outer wall of stainless steel tube
Wind metal heating wire 6, by thermally conductive mode by stainless steel tube 1 heat up and 1 pipe of stainless steel tube in fast gas heat
Module 7 enhances heat transfer effect increasing heat exchange surface area, and the sensor detection mouth 8 that stainless steel tube 1 exports the welding of 3 ends can be with
It is connect with a thermocouple, the screw thread 9 at outlet 3, for fixing the second regulation pipe 5, the insertion groove 10 of arrival end, perpendicular to insertion
The self-locking grooves 11 of slot, for locking the first regulation pipe 4 of different length.
There are three types of types for first regulation pipe 4, are divided into I, II, III type.The length L of regulation pipe is L=45+ (model) X20 (example
If such as II type is 45+20X2=85), unit is millimeter.The right end of every kind of regulation pipe all welds 1 millimeter long, 2 millimeters wide, high 2 milli
The metallic bond of rice is entered when installation by the insertion groove 10 at 1 entrance 2 of stainless steel tube, by the first regulation pipe 4 after fully entering
It rotates clockwise 60 ° and enters self-locking grooves, to lock the position of the first regulation pipe 4, while also having determined that fast gas adds
The position of thermal modules 7.Since the length of fast gas heating module Unit 7 is all 20 millimeters, installs different types of first and adjust
Section pipe 4 can control the quantity of fast gas heating module Unit 7 inside stainless steel tube 1 to adjust exerting for heat convection
Sai Er number controls Outlet Gas Temperature.It simulates and calculates by software, gas temperature to be heated is at 30 DEG C -70 DEG C, heating time
Needing 50 milliseconds -100 milliseconds, fast gas heating module 7, which heats distance and is greater than 80 millimeters, preferably uses III type regulation pipe, and 70
At DEG C -120 DEG C, heating time needs 100 milliseconds -120 milliseconds, and fast gas heating module 7 heats distance and is greater than 100 millis
Rice, preferably use II type regulation pipe, at 120 DEG C -200 DEG C, 120 milliseconds -140 milliseconds of heating time needs, and fast gas heated mould
The heating of block 7 distance is greater than 130 millimeters and preferably uses I type regulation pipe.
Metal heating wire 6 is wound around on 1 wall of stainless steel tube, and the distance between two circle metal heating wires 6 are 5 millimeters,
Since heat transfer type of the metal heating wire 6 to stainless steel tube 1 is thermally conductive, so being close to the spot temperature of tube wall most in heater strip
Height, and the portion temperature among two metal heating wires is minimum.It is calculated by simulation, when setting heating temperature is at 200 DEG C or less
When, the temperature difference maximum on metal tube is no more than 1.2 DEG C i.e. 1%.Metal heating wire 6 transfers heat to pipe by thermally conductive mode
Then wall and fast gas heating module transfer heat to gas with convection current, thermally conductive form.Metal heating wire 6 is by temperature
Degree controller control passes through the size of current of heater strip: thermocouple detects that gas temperature is lower than and sets at sensor detection mouth 8
When determining temperature, temperature controller will increase heater strip internal current, increase heater strip calorific value, otherwise will reduce electric current, drop
Lower calorific value.
The effect of fast gas heating module 7 is enhancing heat transfer effect, increases the nusselt number of heat exchange, within a short period of time
Obtain the gas of uniform temperature.Each unit of fast gas heating module is made of copper-silver mixing material.Production method is
The silver of one layer of micron level thickness is enclosed by plating on the surface of foam copper.The technical requirements of foam copper are PPI 130 ±
10, surface density 2000g/m3, 98% or more through-hole rate, 0.1 millimeter -0.3 millimeter of aperture.8 millimeters of diameter are fabricated to, length 20
The cylindrical body of millimeter, the unit after electroplate as a fast gas heating module.The beneficial effect packet of electroplating surface silver
It includes: preventing copper from aoxidizing in air, cause to influence heat-transfer effect and porosity；Strengthen heat convection effect.Foam metal
The characteristics of be that specific surface area is very big.So when gas passes through fast gas heating module, it can be in fast gas heating module
It is adequately heated and is mixed in gap, to reach uniform and stable temperature.The effect of fast gas heating module is substantially
It is increased the surface area of heat convection, that is, increases nusselt number.
After opening temperature controller and metal heating wire 6, after equipment is heated to set temperature, hot gas to be added is from entering
Mouth 2 enters device, reaches fast gas heating module 7 by the first regulation pipe 4, and obtain at 7 sections of fast gas heating module
Sufficiently heating and mixing, then reaches at sensor detection mouth 8 by regulation pipe 5, detects mouth 8 to temperature controller from sensor
Feedback temperature data, if gas temperature is higher or lower than the temperature of setting, temperature controller will be reduced or be improved accordingly
The power of metal heating wire, so that gas temperature maintains in set temperature.
The measurement that imperial 1301 gases are breathed out in three groups of experiments is carried out in experiment, the case where outlet gas velocity reaches 10m/s
Under, 30 DEG C, 50 DEG C and 70 DEG C of gas temperature is set separately, Outlet Gas Temperature is respectively with set temperature maximum disparity
0.7 DEG C, 0.8 DEG C and 0.7 DEG C, and the gas temperature maximum of exit different location is differed less than 0.01 DEG C.
The gas Quick uniform heating device is easy to use, and structure is simple, and cleanliness without any pollution, can be in the very short time
Inside obtain the uniform heat gas of temperature.It is small in size, it can be widely used in obtain the occasion for needing uniform temperature gas.Together
When, the present apparatus is using fast gas heating module to solve existing heat transfer problem, reduces heat-exchange time, makes gas temperature
It spends more uniform, greatly improves heat exchange efficiency.
Claims (1)
1. a kind of fire-suppressant gas Quick uniform heating device, it is characterised in that: including stainless steel tube (1) and be located at stainless steel tube
(1) outlet (3) of the entrance (2) of one end and stainless steel tube (1) other end, gas enter stainless steel tube (1) by entrance (2)；
The entrance (2) for being located at stainless steel tube (1) with the first regulation pipe (4) that stainless steel tube (1) is connect in a manner of self-locking structure is held, with spiral shell
The second regulation pipe (5) of line connection type connection is located at outlet (3) end of stainless steel tube (1), and the first, second regulation pipe is to solid
Determine the position of fast gas heating module (7), stainless steel tube (1) outer wall winds metal heating wire (6), will by thermally conductive mode
There are fast gas heating module (7) in stainless steel tube (1) heating and stainless steel tube (1), fast gas heating module (7)
To increase heat exchange surface area, enhance heat transfer effect, stainless steel tube (1) outlet (3) end is welded with sensor detection mouth (8), passes
Sensor detection mouth (8) can be connect with a thermocouple, and stainless steel tube (1) outlet (3) end has screw thread (9), and screw thread (9) is for fixing
Second regulation pipe (5), stainless steel tube (1) entrance (2) end have insertion groove (10), have in insertion groove (10) perpendicular to insertion groove
Self-locking grooves (11), self-locking grooves (11) are used to lock the first regulation pipe (4) of different length；
There are three types of types for first regulation pipe (4), are divided into I, II, III type, number 1 indicates that the model of I type regulation pipe, number 2 indicate
The model of II type regulation pipe, number 3 indicate the model of III type regulation pipe, the length L of the first regulation pipe be L=45+ (model) ×
20, unit is millimeter, and the right end of every kind of first regulation pipe all welds 1 millimeter long, 2 millimeters wide, high 2 millimeters of metallic bond, installation
When the first regulation pipe (4) by stainless steel tube (1) entrance (2) hold insertion groove (10) enter, after fully entering by first adjust
Section pipe (4), which rotates clockwise 60 °, makes metallic bond enter self-locking grooves, to lock the first regulation pipe (4), while also determining that
The position of fast gas heating module (7), since the length of fast gas heating module (7) unit is all 20 millimeters, installation is not
The first regulation pipe (4) of same type can control the quantity of internal fast gas heating module (7) unit of stainless steel tube (1)
To adjust the nusselt number of heat convection, Outlet Gas Temperature is controlled, simulates and calculates by software, gas temperature to be heated exists
At 30 DEG C -70 DEG C, heating time needs 50 milliseconds -100 milliseconds, and fast gas heating module (7) heating distance is greater than 80 millis
Rice, preferably uses III type regulation pipe, and for gas temperature to be heated at 70 DEG C -120 DEG C, heating time needs 100 milliseconds -120 milliseconds,
Fast gas heating module (7) heating distance is greater than 100 millimeters, preferably uses II type regulation pipe, gas temperature to be heated is 120
At DEG C -200 DEG C, heating time needs 120 milliseconds -140 milliseconds, and fast gas heating module (7) heating distance is greater than 130 millis
Meter Yi uses I type regulation pipe；
Metal heating wire (6) is wound around on stainless steel tube (1) outer wall, and the distance between two circles metal heating wire (6) are 5 millis
Rice, since heat transfer type of the metal heating wire (6) to stainless steel tube (1) is thermally conductive, so being close to the position of tube wall in heater strip
Temperature highest, and the portion temperature among two metal heating wires is minimum, is calculated by simulation, when setting heating temperature is 200
DEG C or less when, the temperature difference maximum on metal tube is no more than 1.2 DEG C i.e. 1%, and metal heating wire (6) is by thermally conductive mode by heat
The tube wall and fast gas heating module (7) of stainless steel tube (1) are passed to, then stainless steel tube (1) tube wall and quick air
Body heating module (7) transfers heat to gas with convection current, thermally conductive form, and metal heating wire (6) is controlled by temperature controller
Pass through the size of current of heater strip: when thermocouple detects gas temperature lower than set temperature at sensor detection mouth (8), temperature
Degree controller will increase heater strip internal current, increase heater strip calorific value, otherwise will reduce electric current, reduce calorific value；
The effect of fast gas heating module (7) is enhancing heat transfer effect, increases the nusselt number of heat exchange, within a short period of time
Each unit to the uniform gas of temperature, fast gas heating module is made of copper-silver mixing material, production method be
The silver of one layer of micron level thickness is enclosed by plating in the surface of foam copper, and the technical requirements of foam copper are PPI 130 ± 10,
Surface density is 2000g/m3, through-hole rate is 98% or more, and aperture is 0.1 millimeter -0.3 millimeter, is fabricated to 8 millimeters of diameter, length
20 millimeters of cylindrical body, the unit after electroplate as a fast gas heating module, the beneficial effect of electroplating surface silver
Include: to prevent copper from aoxidizing in air, causes to influence heat-transfer effect and porosity；Strengthen heat convection effect, foam gold
The characteristics of category is that specific surface area is very big, so meeting is in fast gas heating module when gas passes through fast gas heating module
Gap in adequately heated and mixed, to reach uniform and stable temperature, the effect essence of fast gas heating module
On be increased the surface area of heat convection, that is, increase nusselt number；
After opening temperature controller and metal heating wire (6), after equipment is heated to set temperature, hot gas to be added is from entrance
(2) enter device, reach fast gas heating module (7) by the first regulation pipe (4), and in fast gas heating module (7)
Section is sufficiently heated and is mixed, and is then reached at sensor detection mouth (8) by the second regulation pipe (5), is detected by sensor
Mouth (8) is to temperature controller feedback temperature data, if gas temperature is higher or lower than the temperature of setting, temperature controller will
The corresponding power reduced or improve metal heating wire, so that gas temperature maintains set temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710145543.6A CN106940085B (en) | 2017-03-13 | 2017-03-13 | A kind of fire-suppressant gas Quick uniform heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710145543.6A CN106940085B (en) | 2017-03-13 | 2017-03-13 | A kind of fire-suppressant gas Quick uniform heating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106940085A CN106940085A (en) | 2017-07-11 |
| CN106940085B true CN106940085B (en) | 2019-11-22 |
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| CN201710145543.6A Active CN106940085B (en) | 2017-03-13 | 2017-03-13 | A kind of fire-suppressant gas Quick uniform heating device |
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| CN203687354U (en) * | 2014-02-17 | 2014-07-02 | 江西科技学院 | Carbon dioxide gas heating device |
| CN204902228U (en) * | 2015-08-26 | 2015-12-23 | 西安电炉研究所有限公司 | Gas heater |
| CN205410031U (en) * | 2016-02-03 | 2016-08-03 | 李明贤 | Walking stick is folded to multisection |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2413493Y (en) * | 1999-11-25 | 2001-01-10 | 杨光国 | Self-locking joint for spraying irrigation |
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2017
- 2017-03-13 CN CN201710145543.6A patent/CN106940085B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006090676A (en) * | 2004-09-27 | 2006-04-06 | Fujikin Inc | Gas heating method, and gas to be heated passage forming member |
| CN103322569A (en) * | 2012-03-23 | 2013-09-25 | 通用电气公司 | Hot gas torches, hot gas torch systems and hot gas heating methods |
| CN102628650A (en) * | 2012-04-19 | 2012-08-08 | 江苏中国科学院能源动力研究中心 | Pressurizing tube type resistance furnace capable of adjusting length of working section and application method of pressurizing tube type resistance furnace |
| CN202630387U (en) * | 2012-04-19 | 2012-12-26 | 江苏中国科学院能源动力研究中心 | Pressurizing packed bed type electrical gas heating device |
| CN203687354U (en) * | 2014-02-17 | 2014-07-02 | 江西科技学院 | Carbon dioxide gas heating device |
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| CN106940085A (en) | 2017-07-11 |
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