CN209130868U - A kind of low nitrogen burning head for boiler - Google Patents
A kind of low nitrogen burning head for boiler Download PDFInfo
- Publication number
- CN209130868U CN209130868U CN201821914825.4U CN201821914825U CN209130868U CN 209130868 U CN209130868 U CN 209130868U CN 201821914825 U CN201821914825 U CN 201821914825U CN 209130868 U CN209130868 U CN 209130868U
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- CN
- China
- Prior art keywords
- tube body
- combustion gas
- low nitrogen
- secondary air
- air channel
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Abstract
A kind of low nitrogen burning head for boiler, including igniter, further include the first tube body；The circle rib set that section is V-arrangement is fixedly connected in the first tube wall circumferential direction, multiple combustion gas pores are offered in the preceding slope surface of circle rib set, each combustion gas pore direction is outside 45 degree inclinations, fuel gas conduit is inserted in each combustion gas pore, low nitrogen burning head further includes the second tube body, second tube body is inserted into the first tube body from the front of the first tube body, and the front end of the second tube body is provided with the orifice plate with mesoporous；Multiple combustion gas discharge ports are offered on the wall of two tube bodies, gas header pipe is inserted into from the first tube body rear portion, is connected with combustion gas inlet pipe in the rear end of gas header pipe；Secondary air channel is inserted into from the rear end of combustion gas inlet pipe, and the front end of secondary air channel is withstood on orifice plate.This burning header structure is simple, easy to assembly.
Description
Technical field
The utility model relates to combustion head, in particular to a kind of low nitrogen burning head for boiler belongs to boiler matching and sets
Standby component technology field.
Background technique
Boiler is most common heat exchange equipment, and according to the requirement of environment protection emission, coal-burning boiler is gradually by gas fired-boiler
It is substituted, combustion gas heats boiler by combustor, but exhaust gas discharge still can be generated when combustion of natural gas, and burn natural gas
Common pollutant is nitrogen oxides in the exhaust gas that burning generates, the NO in exhaust gas that combustor common at present generatesXIt is dense
Degree is general all in 100mg/m3More than, as Environmental Protection in China requires more and more stringent, the discharged nitrous oxides of this order of magnitude
Obviously it cannot meet the requirements, so the exploitation of low-NO_x combustion technology is inevitable trend, combustion head is the core component of burning,
The factors such as the distribution of combustion head position combustion gas, the uniformity of mixing, temperature have different degrees of shadow to the formation of nitrogen oxides
It rings, and the design of combustion head is directly related to the uniformity that combustion gas is mixed with combustion air, current combustion head is gone back in this respect
There is an improved space, and current combustion head is generally existing in design and manufacture that structure is complicated, installation manufacturing process complexity etc.
Problem.
Summary of the invention
It is an object of the invention to overcome the above problem existing for the combustion head used in the burning on current boiler, provide
A kind of low nitrogen burning head for boiler.
To realize the purpose of this utility model, using following technical solutions: a kind of low nitrogen burning head for boiler,
Including igniter, the low nitrogen burning head further includes the first tube body；Section is fixedly connected in the first tube wall circumferential direction
For the circle rib set of V-arrangement, section is that the tip that the circle rib of V-arrangement covers is outside, is offered in the preceding slope surface that section covers for the circle rib of V-arrangement
Multiple combustion gas pores, each combustion gas pore direction are outside 45 degree inclinations, are inserted with fuel gas conduit in each combustion gas pore, fire
The inner end of tracheae is connected to the inner cavity of the first tube body；
The low nitrogen burning head further includes the second tube body, the second tube body from the front of the first tube body be inserted into the first tube body and
It is fixedly connected with the first tube body, the front end of the second tube body is provided with the orifice plate with mesoporous；It is offered on the wall of the second tube body more
A combustion gas discharge port, multiple combustion gas discharge ports are located on same circumference and are uniformly distributed；
It is fixedly connected with ring flange in the front end of the first tube body, even wind disk is set on the second tube body and is fixedly connected on second
On tube body, the even air holes of multi-turn is offered on the even wind disk, the edge of even wind disk there are multiple open slots, and each fuel gas conduit is worn
It is located in corresponding open slot；
It is machined with step close to rear portion in the first inboard wall of tube body, gas header pipe is inserted into from the first tube body rear portion and its front end is pushed up
On step, combustion gas inlet pipe is connected in the rear end of gas header pipe；The combustion gas inlet pipe is bend pipe；Secondary air channel from combustion gas into
The rear end of pipe is inserted into, and the front end of secondary air channel is withstood on orifice plate, and the mesoporous on orifice plate is located in secondary air channel；Secondary air channel and combustion
It is closed between gas inlet pipe；Combustion gas enters in the first tube body and in the second tube body outside secondary air channel；The igniter is fixed to be connected
It connects on gas header pipe, the ignition electrode on igniter is located at the top of combustion gas discharge port.
Further；The quantity of the combustion gas pore is even number, and each combustion gas pore covers circumferentially in section for the circle rib of V-arrangement
On be uniformly distributed.
It is further: to be to offer screw hole corresponding with combustion gas pore, each screw hole in slope surface after the circle rib of V-arrangement covers in section
In be installed with clamping screw, each clamping screw holds out against each corresponding fuel gas conduit.
Further；The front end of each fuel gas conduit is located in the length of the second tube body, and each fuel gas conduit projects on the second tube body
Its front end is at a distance from the second tube body front end between 2-10mm afterwards.
The positive advantageous effects of the utility model are: this combustion head is mounted in the cylinder of combustor front end, burning
Machine rear portion is provided with air blower and provides combustion air, and combustion gas enters the first pipe in the gap between in secondary air channel and gas header pipe
Body and the second tube body, combustion gas a part are sprayed from 45 degree of fuel gas conduits being respectively inclined outwardly, and another part is from the second tube body
It is sprayed in fuel gas hole, realizes fractional combustion, can be effectively reduced the formation of nitrogen oxides, fire-retardant wind a part is from positioned at combustion head
It being provided in the secondary air channel at center, another part directly comes to reach combustion head by even wind disk from the rear portion outside combustion head, this
Kind structure can be such that combustion gas adequately mixes with the realization of fire-retardant wind, can effectively control by adjusting the ratio of combustion gas and fire-retardant wind
The formation of nitrogen oxides processed, and this burning header structure is simple, it is easy to assembly.
Detailed description of the invention
Fig. 1 is schematic cross-sectional view of the utility model without igniter.
Fig. 2 is the overall schematic of the utility model.
Fig. 3 is schematic diagram of the utility model from the direction of front.
Specific embodiment
In order to more fully explain the implementation of the utility model, the embodiment of the utility model is provided.These implement real
Example is only the elaboration to the utility model, does not limit the scope of the utility model.
In conjunction with attached drawing to the further details of explanation of the utility model, respectively marked in attached drawing are as follows: 1: the first tube body；2: section
For the circle rib set of V-arrangement；3: preceding slope surface；4: rear slope surface；5: fuel gas conduit；6: the second tube bodies；7: orifice plate；8: mesoporous；9: ring flange；
10: even gas disk；11: combustion gas inlet pipe；12: secondary air channel；13: combustion gas discharge port；14: igniter；15: ignition electrode；16: even air holes；
17: open slot；18: clamping screw；19: step；20: gas header pipe.
As shown in the picture, a kind of low nitrogen burning head for boiler, including igniter 14, igniter are currently commercially available
Finished product, the low nitrogen burning head further includes the first tube body 1；It is V that section is fixedly connected in the first tube wall circumferential direction
The circle rib set 2 of shape, section are that the tip that the circle rib of V-arrangement covers is outside, are offered in the preceding slope surface 3 that section covers for the circle rib of V-arrangement
Multiple combustion gas pores, each combustion gas pore direction are outside 45 degree inclinations, and the quantity of the combustion gas pore is even number, respectively
Combustion gas pore covers in section for the circle rib of V-arrangement to be uniformly distributed in circumferential direction；It is inserted with fuel gas conduit in each combustion gas pore, fuel gas conduit
Inner end is connected to the inner cavity of the first tube body；5 show fuel gas conduit, are to offer and fire in slope surface 4 after the circle rib of V-arrangement covers in section
The corresponding screw hole of tracheal orifice is installed with clamping screw in each screw hole, and each clamping screw holds out against each corresponding fuel gas conduit, shown in 18
For clamping screw；
The low nitrogen burning head further includes the second tube body 6, and the second tube body is inserted into the first tube body from the front of the first tube body
And be fixedly connected with the first tube body, the front end of the second tube body is provided with the orifice plate 7 with mesoporous；It is offered on the wall of the second tube body
Multiple combustion gas discharge ports, 13 show combustion gas discharge port, and multiple combustion gas discharge ports are located on same circumference and are uniformly distributed；
It is fixedly connected with ring flange 9 in the front end of the first tube body, even wind disk 10 is set on the second tube body and is fixedly connected on
On second tube body, the even air holes of multi-turn is offered on the even wind disk, 16 show even air holes, and the edge of even wind disk has more
A open slot, as indicated at 17, each fuel gas conduit is threaded through in corresponding open slot open slot；
It is machined with step close to rear portion in the first inboard wall of tube body, 19 show step, and gas header pipe 20 is after the first tube body
Portion is inserted into and its front end is withstood on step, is connected with combustion gas inlet pipe 11 in the rear end of gas header pipe；The combustion gas inlet pipe is curved
Pipe；Secondary air channel is inserted into from the rear end of combustion gas inlet pipe 11, and the front end of secondary air channel is withstood on orifice plate, and the mesoporous on orifice plate is located at two
In secondary air hose；It is closed between secondary air channel and combustion gas inlet pipe；Combustion gas enters in the first tube body outside secondary air channel and the second tube body
It is interior；The igniter is fixedly connected on gas header pipe, and the ignition electrode 15 on igniter is located at the top of combustion gas discharge port.This reality
In novel, the front end of each fuel gas conduit is located in the length of the second tube body, its front end after each fuel gas conduit projects on the second tube body
At a distance from the second tube body front end between 2-10mm.
After the embodiments of the present invention is described in detail, one of ordinary skilled in the art is clearly understood that,
Various change and modification can be carried out by not departing under above-mentioned claim and spirit, all according to the technical essence of the utility model
Any simple modification, equivalent change and modification to the above embodiments belong to the range of technical solutions of the utility model,
And the utility model is also not only restricted to the embodiment of example in specification.
Claims (4)
1. a kind of low nitrogen burning head for boiler, including igniter, it is characterised in that: the low nitrogen burning head further includes
One tube body；The circle rib set that section is V-arrangement is fixedly connected in the first tube wall circumferential direction, section is the point that the circle rib of V-arrangement covers
Portion is outside, offers multiple combustion gas pores in the preceding slope surface that section covers for the circle rib of V-arrangement, each combustion gas pore direction is
Outside 45 degree tilt, and are inserted with fuel gas conduit in each combustion gas pore, the inner end of fuel gas conduit is connected to the inner cavity of the first tube body；
The low nitrogen burning head further includes the second tube body, and the second tube body from the front of the first tube body is inserted into the first tube body and with the
One tube body is fixedly connected, and the front end of the second tube body is provided with the orifice plate with mesoporous；Multiple combustions are offered on the wall of the second tube body
Gas portals, and multiple combustion gas discharge ports are located on same circumference and are uniformly distributed；
It is fixedly connected with ring flange in the front end of the first tube body, even wind disk is set on the second tube body and is fixedly connected on the second tube body
On, the even air holes of multi-turn is offered on the even wind disk, the edge of even wind disk there are multiple open slots, and each fuel gas conduit is threaded through
In corresponding open slot；
It is machined with step close to rear portion in the first inboard wall of tube body, gas header pipe is inserted into from the first tube body rear portion and its front end withstands on platform
On rank, combustion gas inlet pipe is connected in the rear end of gas header pipe；The combustion gas inlet pipe is bend pipe；Secondary air channel is from combustion gas inlet pipe
Rear end insertion, the front end of secondary air channel are withstood on orifice plate, and the mesoporous on orifice plate is located in secondary air channel；Secondary air channel and combustion gas into
It is closed between pipe；Combustion gas enters in the first tube body and in the second tube body outside secondary air channel；
The igniter is fixedly connected on gas header pipe, and the ignition electrode on igniter is located at the top of combustion gas discharge port.
2. a kind of low nitrogen burning head for boiler according to claim 1, it is characterised in that: the combustion gas pore
Quantity is even number, and each combustion gas pore covers in section for the circle rib of V-arrangement to be uniformly distributed in circumferential direction.
3. a kind of low nitrogen burning head for boiler according to claim 1, it is characterised in that: be the circle of V-arrangement in section
Screw hole corresponding with combustion gas pore is offered in slope surface after rib set, clamping screw is installed in each screw hole, each clamping screw will be each
Corresponding fuel gas conduit is held out against.
4. a kind of low nitrogen burning head for boiler according to claim 1, it is characterised in that: the front end position of each fuel gas conduit
In in the length of the second tube body, its front end is at a distance from the second tube body front end in 2- after each fuel gas conduit projects on the second tube body
Between 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821914825.4U CN209130868U (en) | 2018-11-21 | 2018-11-21 | A kind of low nitrogen burning head for boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821914825.4U CN209130868U (en) | 2018-11-21 | 2018-11-21 | A kind of low nitrogen burning head for boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209130868U true CN209130868U (en) | 2019-07-19 |
Family
ID=67246053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821914825.4U Expired - Fee Related CN209130868U (en) | 2018-11-21 | 2018-11-21 | A kind of low nitrogen burning head for boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209130868U (en) |
-
2018
- 2018-11-21 CN CN201821914825.4U patent/CN209130868U/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: 20190719 Termination date: 20211121 |