CN208332264U - A kind of jet pipe - Google Patents
A kind of jet pipe Download PDFInfo
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- CN208332264U CN208332264U CN201820489348.5U CN201820489348U CN208332264U CN 208332264 U CN208332264 U CN 208332264U CN 201820489348 U CN201820489348 U CN 201820489348U CN 208332264 U CN208332264 U CN 208332264U
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- jet pipe
- gas
- latter half
- annular groove
- joint face
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Abstract
The utility model discloses a kind of jet pipe, it is characterised in that: it includes that jet pipe first half, jet pipe are latter half of；Jet pipe first half side is air inlet, and other side joint face is equipped with annular groove；The latter half of side of jet pipe is mixed gas outlet, and other side joint face is equipped with corresponding annular groove；The joint face that the joint face and the jet pipe of the jet pipe first half are latter half of is tightly connected, the latter half of annular groove of the annular groove and jet pipe of the jet pipe first half constitutes cyclic annular assignment channel, gap is provided on the inside of the ring-type assignment channel, the gap is cyclic annular combustion gas distribution openings, gas inlet is set on the jet pipe, and the gas inlet is connected to the cyclic annular assignment channel.The combustion gas distribution openings that the latter half of annular groove of the annular groove and jet pipe of jet pipe first half disclosed in the utility model constitutes cyclic annular assignment channel and is arranged on the inside of it, it is easier to which flow and gas are stablized, and can guarantee that air/gas is uniformly mixed.
Description
Technical field
The utility model relates to full premix combustion technical field, in particular to a kind of jet pipe.
Background technique
The application of jet pipe is very extensive, jet pipe described herein be it is a kind of be applied to adjust in full premix combustion technology air,
The device of gas proportioning, is typically located at fan inlet and zero-pressure solenoid valve matches.Natural gas increasingly shortage and more drill
Stronger problem of environmental pollution proposes more strict requirements to energy conservation and the discharge of gas fired-boiler.In recent years, it rises in Europe
The full premix combustion technology in continent is widely used in condensation technology, using excess air factor is reduced, improves flue gas dew point
Temperature increases moisture condensation rate in flue gas, greatlys improve Analyses on Thermal Efficiency of Using Natural Gas, while burner hearth can be effectively reduced in the technology
Effective temperature reduces nitrogen oxide emission, has effectively achieved the purpose that energy-saving and emission-reduction.
At this stage, critical component of the jet pipe as full premix combustion system, China place one's entire reliance upon product import, not complete
The autonomous property right of full knowledge, and since the model specification parameter of inlet nozzle is early cured, it significantly limits domestic complete pre-
The popularization and application of mixed surface combustion system, it is difficult to which the diversification for meeting domestic market requires.In addition the existing common jet pipe of foreign countries
Plastic components is frequently included in key building block, this will lead to jet pipe in terms of service life i.e. durability in the presence of certain hidden
Suffer from, longer projected life requirement is often not achieved.More representational external product is the product of Honeywell, by three
Component composition, includes plastic components, and production technology is complicated, not easy mold release, and plastic part is easy aging, bad adjusting gas flow,
Installation trouble, production cost later maintenance cost are all high.
At this stage, the conventional burners of domestic mainstream are more demanding for gaseous-pressure, general domestic gas pipeline
Pressure is difficult to meet the requirement of its normal use；And Natural gas pipeline system is because larger to traditional combustion with gas peak period air pressure change
Device stable operation also brings certain influence.
Summary of the invention
The utility model aim is: overcoming the shortcomings of the prior art, solves problems of the prior art, provide
A kind of jet pipe is used gas drainage technology in full premix combustion system, is utilized unique design using air, combustion gas coupling technique
Annular fuel gas air inlet, enter back into hearth combustion after combustion gas inspiration jet pipe and air are carried out full and uniform premix, reduce
Gas supply demand pressure, increases boiler to the adaptability of actual working environment, improves efficiency, reduce cost.
The technical solution of the utility model are as follows:
A kind of jet pipe comprising jet pipe first half, jet pipe are latter half of；
First side of the jet pipe first half is air inlet, and the latter half of second side of the jet pipe goes out for mixed gas
Mouthful, the joint face of described jet pipe first half second side and the joint face of latter half of first side of the jet pipe are tightly connected；
The joint face of jet pipe first half second side be equipped with annular groove, the first latter half of side joint face of jet pipe be equipped with
The corresponding annular groove of annular groove on jet pipe first half joint face, the annular groove and the latter half of ring of jet pipe of the jet pipe first half
Shape slot constitutes cyclic annular assignment channel；Or the cyclic annular distribution of setting is logical on jet pipe first half or the latter half of joint face of jet pipe
Road；
It is provided with inside gap and jet pipe and is connected on the inside of the ring-type assignment channel, the gap is cyclic annular combustion gas distribution
Mouthful,
Gas inlet is set on the jet pipe, and the gas inlet is connected to the cyclic annular assignment channel.
Preferably, the jet pipe first half air inlet is to the latter half of sealed connection with jet pipe first half of the jet pipe
Space is gradually reduced in pipe between face, between the sealed connection face to the latter half of air/gas mixed gas outlet of jet pipe
Pipe in space be gradually expanded.
Preferably, gas inlet adjusting gasket is arranged in the cyclic annular assignment channel, is used to regulating gas air inflow.
Preferably, the jet pipe also set up air inlet adopt crimping mouth and gaseous-pressure adopt pressure mouth.
Preferably, the latter half of side of jet pipe is arranged in gas inlet.
Preferably, jet pipe first half and the latter half of sealed connection face of jet pipe are provided with O-ring seal.
Preferably, the end face of jet pipe first half, which is provided with, can match different boiler product connecting components；The interconnecting piece
Part is screw hole or through-hole.
Preferably, the external belt between the end face and sealing surface of jet pipe first half is cambered.
Preferably, gas inlet is provided with solenoid valve, can be generated in its throat position when jet pipe works normally negative
Pressure, connects open solenoid valve at this time, and combustion gas is drained to jet pipe.
The advantages of the utility model:
1, the annular groove of jet pipe first half disclosed in the utility model constitutes cyclic annular point with the latter half of annular groove of jet pipe
Using the gap on the inside of annular groove as combustion gas distribution openings with channel and on the inside of it, it is easier to which flow and gas are stablized, and have
It is uniform conducive to being sufficiently mixed.It can guarantee that air/gas is uniformly mixed using cyclic annular air intake structure, combustion gas assignment channel size foot
Enough and connection and reasonable arrangement.
2, the jet pipe first half air inlet to the latter half of sealed connection face with jet pipe first half of the jet pipe it
Between pipe in space be gradually reduced, the sealed connection face to the pipe between the latter half of air/gas mixed gas outlet of jet pipe
Interior space is gradually expanded, and gas drainage technology can be used in such full premix combustion system, by combustion gas inspiration jet pipe and air
Enter back into hearth combustion after premix, reduce gas supply demand pressure, improve combustion system continue, safe and stable property；So that
Gas/air is sufficiently mixed, and is improved hearth combustion effect, and utmostly reduce gas supply demand pressure, is increased pot
Adaptability of the furnace to actual working environment.Jet pipe is allocated as two parts by the utility model, is formed by casting one-pass molding,
Secondary operation amount is utmostly reduced, manufacturing cost is reduced.
3, cyclic annular assignment channel is provided with gas inlet adjusting gasket, for adjusting gap size to regulating gas air inlet
Amount, to meet different model boiler flue gas air inflow demand, improves the versatility of jet pipe, and can limit gas inlet simultaneously
Measure the upper limit, it is ensured that safety is stablized in boiler operatiopn.
4, setting air inlet adopts crimping mouth acquisition jet pipe air inlet pressure, and pressure signal is fed back to solenoid valve,
Solenoid valve tunes up combustion gas, air stoichiometry according to pressure signal.Gaseous-pressure, which adopts pressure mouth, can acquire gas inlet pressure, to adjust
Gas inlet amount provides reference frame.
5, the latter half of side of jet pipe is arranged in gas inlet.Be conducive to mix with air uniform, stable.
6, O-ring seal is further ensured that jet pipe first half and the latter half of sealed connection of jet pipe.
7, the end face of jet pipe first half, which is provided with, can match different boiler product connecting components, such as bolt etc..Favorably
In adapting to different boiler products, the suitability of product is greatly improved.
8, with cambered between the end face and sealing surface of jet pipe first half.It is easy demoulding and manufacture.The product master of this patent
There are jet pipe first half and the latter half of composition of jet pipe, the design structure of the metalwork being both integrally formed, this patent is easy to
Demoulding, and it is durable.
Detailed description of the invention
The utility model is further described with reference to the accompanying drawings and embodiments:
Fig. 1 is the schematic diagram of jet pipe described in the utility model.
Fig. 2 is the sectional view schematic diagram of jet pipe described in the utility model.
Fig. 3 is the perspective view schematic diagram of jet pipe described in the utility model.
Wherein: 1, jet pipe first half 2, jet pipe be latter half of 3, air inlet adopts crimping mouth 4, O-ring seal 5, combustion gas
Air inlet adjustment gasket 6, gaseous-pressure adopt pressure mouth 7, gas inlet 8, cyclic annular assignment channel 9, cyclic annular combustion gas distribution openings
10, radian
Specific embodiment
With reference to the accompanying drawing and technical solutions of the utility model are described in detail in preferred embodiment.
As shown in Figure 1-Figure 3, the utility model discloses a kind of jet pipe comprising jet pipe first half 1, jet pipe latter half of 2；Institute
Stating 1 first side of jet pipe first half is air inlet, and second side joint face is equipped with annular groove；The jet pipe latter half of 2 second
Side is mixed gas outlet, and the first side joint face is equipped with annular corresponding with the annular groove on jet pipe first half joint face
Slot；The joint face of the jet pipe first half 1 and the joint face of the jet pipe latter half of 2 are tightly connected, the jet pipe first half 1
The annular groove of annular groove and jet pipe latter half of 2 constitutes cyclic annular assignment channel 8, between the inside of the ring-type assignment channel 8 is provided with
It is connected to inside gap, the gap and jet pipe, the gap is cyclic annular combustion gas distribution openings 9, and gas inlet is arranged on the jet pipe
7, the gas inlet 7 is connected to the cyclic annular assignment channel 8.Further, the gas inlet 7 is arranged after jet pipe
The side of half portion 2 is conducive to mix with air uniform, stable.Gas inlet adjusting gasket is arranged in the ring-type assignment channel 8
5, by adjust annular distribution channel gap size, carry out regulating gas air inflow, thus meet different model boiler flue gas into
Tolerance demand improves the versatility of jet pipe, and can limit the gas inlet amount upper limit simultaneously, it is ensured that safety is stablized in boiler operatiopn
Property.1 air inlet of jet pipe first half is between the jet pipe latter half of 2 and the sealed connection face of jet pipe first half 1
Space is gradually reduced in managing, empty in the pipe between the sealed connection face to the latter half of 2 air/gas mixed gas outlet of jet pipe
Between be gradually expanded.Jet pipe disclosed in the utility model, gas inlet 7 be provided with solenoid valve can ensure certain combustion gas,
Air stoichiometry, so that flameholding, guarantees systems stay, stabilization, safety；The annular groove and jet pipe of the jet pipe first half 1
The combustion gas distribution openings that latter half of 2 annular groove constitutes cyclic annular assignment channel 8 and is arranged on the inside of it, it is easier to flow and gas
Stablize.It can guarantee that air/gas is uniformly mixed using cyclic annular air intake structure, combustion gas assignment channel size is enough and arrangement is closed
Reason.1 air inlet of jet pipe first half is between the jet pipe latter half of 2 and the sealed connection face of jet pipe first half 1
Space is gradually reduced in managing, empty in the pipe between the sealed connection face to the latter half of 2 air/gas mixed gas outlet of jet pipe
Between be gradually expanded, in such full premix combustion system can use gas drainage technology, by combustion gas inspiration jet pipe and air pre-mixing
After enter back into hearth combustion, reduce gas supply demand pressure, improve combustion system continue, safe and stable property；So that combustion
Gas/air is sufficiently mixed, and is improved hearth combustion effect, and utmostly reduce gas supply demand pressure, is increased boiler
To the adaptability of actual working environment.Jet pipe is allocated as two parts by the utility model, is formed by casting one-pass molding, most
Big degree reduces secondary operation amount, reduces manufacturing cost.
The jet pipe also set up air inlet adopt crimping mouth 3 and gaseous-pressure adopt pressure mouth 6.The setting of gas inlet 7 is being sprayed
Manage latter half of 2 side.It is gas inlet channel, the gas inlet that gas inlet 7, which arrives channel between cyclic annular assignment channel 8,
Channel setting gaseous-pressure adopts pressure mouth 6, and spray tube gas inlet channel throat atmospheric pressure value is acquired when for testing sizing.Pass through combustion gas
Pressure adopts pressure mouth 6 acquisition gas inlet channel pressure and air inlet adopts pressure pipe acquisition air inlet pressure, obtains gas inlet
Channel throat and air inlet pressure difference monitor full premix combustion system conditions, and can be used as design early period, test, determine
Type work.
For better seal, jet pipe first half 1 and the latter half of 2 sealed connection face of jet pipe are provided with O-ring seal 4.
In order to adapt to different boiler products, the suitability of product is improved, the end face of jet pipe first half 1, which is provided with, to be matched
The connecting component of different boiler products.The connecting component is screw hole or through-hole etc., can pass through bolt or screw rod and boiler
Product connection.
With cambered 10 between the end face and sealing surface of jet pipe first half 1.It is easy demoulding and manufacture in this way, it is easy to process.
The product of this patent mainly has jet pipe first half and the latter half of composition of jet pipe, the metalwork being both integrally formed, this patent
Design structure be easy to demould, and it is durable.
Preferably, gas inlet 7 is provided with solenoid valve, can be generated in its throat position when jet pipe works normally full
The negative pressure of the certain demand of foot, connects open solenoid valve at this time, and combustion gas is drained to jet pipe.The structure can guarantee certain combustion
Gas/air stoichiometry, it is ensured that combustion system continues, stablizes safety.The jet pipe is adopted in air inlet and is connected at crimping mouth 3
Air inlet pressure adopts pressure pipe, and the air inlet adopts pressure pipe for acquiring nozzle inlet position air inlet pressure, and will pressure
Force signal feeds back to solenoid valve, and solenoid valve is adaptively adjusted according to jet pipe air inlet pressure change, guarantees
Stable air/gas proportion, it is ensured that hearth combustion stability.Gaseous-pressure, which adopts pressure mouth 6, can acquire 7 pressure of gas inlet,
Reference frame is provided for regulating gas air inflow.
In order to meet different model boiler flue gas air inflow demand, in gas inlet channel position ring-type air inlet distribution structure
Place is disposed with gas inlet adjusting gasket 5, adjusts gas inlet amount, improves the versatility of jet pipe, and can limit combustion gas simultaneously
The air inflow upper limit, it is ensured that safety is stablized in boiler operatiopn.
The jet pipe mainly uses aluminum material to make.The gas for flowing through jet pipe is gas/air mixed gas, to prevent
The generation of electric spark, spout body must be made of aluminum material.
When operating normally, air enters jet pipe from jet pipe air inlet, since jet pipe first half 1 is tapered configuration,
Jet pipe latter half of 2 is divergent structure, and air reaches maximum in jet pipe first half 1 and the latter half of 2 link position flow velocity of jet pipe, at this time
Air pressure dramatic decrease causes gas inlet channel position to generate negative pressure, if solenoid valve connects opening at this time, combustion gas is drawn
It is flow to jet pipe, it is abundant through cyclic annular 9 structure of distribution openings and air by gas inlet channel to jet pipe internal annular assignment channel 8
Mixing.This combustion gas can be natural gas or other fuel gas.
Still there are many embodiment, all technologies formed using equivalents or equivalent transformation for the utility model
Scheme is all fallen within the protection scope of the utility model.
Claims (10)
1. a kind of jet pipe, it is characterised in that: it includes that jet pipe first half, jet pipe are latter half of；
First side of the jet pipe first half is air inlet, and the latter half of second side of the jet pipe is mixed gas outlet,
The joint face of described jet pipe first half second side and the joint face of latter half of first side of the jet pipe are tightly connected；
The joint face of jet pipe first half second side is equipped with annular groove, and the first latter half of side joint face of jet pipe is equipped with and jet pipe
The corresponding annular groove of annular groove on first half joint face, the annular groove and the latter half of annular groove of jet pipe of the jet pipe first half
Constitute cyclic annular assignment channel；Or cyclic annular assignment channel is set on jet pipe first half or the latter half of joint face of jet pipe；
It being provided with inside gap and jet pipe and is connected on the inside of the ring-type assignment channel, the gap is cyclic annular combustion gas distribution openings,
Gas inlet is set on the jet pipe, and the gas inlet is connected to the cyclic annular assignment channel.
2. jet pipe according to claim 1, it is characterised in that: after the jet pipe first half air inlet to the jet pipe
Space is gradually reduced in pipe between half portion and the sealed connection face of jet pipe first half, and the sealed connection face is latter half of to jet pipe
Space is gradually expanded in pipe between air/gas mixed gas outlet.
3. jet pipe according to claim 1, it is characterised in that: gas inlet spacer is arranged in the ring-type assignment channel
Piece, for adjusting gap size to control gas inlet amount.
4. jet pipe according to claim 1, it is characterised in that: the jet pipe also sets up air inlet and adopts crimping mouth and combustion gas
Pressure adopts pressure mouth.
5. jet pipe according to claim 1, it is characterised in that: the latter half of side of jet pipe is arranged in gas inlet.
6. jet pipe according to claim 1, it is characterised in that: jet pipe first half and the latter half of sealed connection face of jet pipe are arranged
There is O-ring seal.
7. jet pipe according to claim 1, it is characterised in that: the air inlet end face of jet pipe first half is provided with energy
Connecting component with different boiler products.
8. jet pipe according to claim 1, it is characterised in that: the jet pipe first half and jet pipe is latter half of is integrally formed
Metal parts.
9. jet pipe according to claim 1, it is characterised in that: the external belt between the end face and sealing surface of jet pipe first half
It is cambered.
10. jet pipe according to claim 1, it is characterised in that: gas inlet is provided with solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820489348.5U CN208332264U (en) | 2018-04-09 | 2018-04-09 | A kind of jet pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820489348.5U CN208332264U (en) | 2018-04-09 | 2018-04-09 | A kind of jet pipe |
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| Publication Number | Publication Date |
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| CN208332264U true CN208332264U (en) | 2019-01-04 |
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ID=64780724
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| CN201820489348.5U Active CN208332264U (en) | 2018-04-09 | 2018-04-09 | A kind of jet pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360564A (en) * | 2018-04-09 | 2019-10-22 | 苏州威博特能源环保科技有限公司 | A kind of jet pipe |
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2018
- 2018-04-09 CN CN201820489348.5U patent/CN208332264U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360564A (en) * | 2018-04-09 | 2019-10-22 | 苏州威博特能源环保科技有限公司 | A kind of jet pipe |
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