CN210662845U - Low-nitrogen combustor capable of controlling intensity of surface combustion area - Google Patents

Abstract

A low-nitrogen burner capable of controlling the strength of a surface combustion area comprises an air filter, a Venturi mixing valve, a variable frequency fan, a mixed gas rectifier and a combustion head shell, wherein the combustion head shell is of a circular structure, a partition board coaxially mounted with the combustion head shell is arranged in the combustion head shell, the partition board is connected with a fixed plate on the mixed gas rectifier, the circumference of the partition board is uniformly arranged in the combustion head shell to uniformly separate the inner cavity of the combustion head, a baffle structure for controlling the combustion strength is arranged between the combustion head and the mixed gas rectifier, the baffle structure comprises a middle fixed plate, a first layer of baffle, a second layer of baffle, a third layer of baffle and a fourth layer of baffle, the middle fixed plate, the first layer of baffle, the second layer of baffle, the third layer of baffle and the fourth layer of baffle are sequentially connected and are sequentially clamped through the fixed plate and a fixed groove, a plurality of combustion bins are separately arranged in the combustion head, the baffle is arranged at the front end of the compartment, so that the combustion intensity of different compartments can be adjusted, the structure is simple, and the operation is convenient.

Description

Low-nitrogen combustor capable of controlling intensity of surface combustion area

Technical Field

The utility model belongs to the technical field of the low carbon combustor technique and specifically relates to just a can control low nitrogen combustor of regional intensity of surface combustion.

Background

Compared with coal and fuel oil, the gas fuel is a better, efficient and clean boiler fuel, has relatively low ignition temperature, high flame propagation speed and high combustion speed, and is easy to realize automatic gas transmission, mixing and combustion processes, so the gas fuel has wide application in the technical field of gas boilers, but the gas fuel discharges NOx during combustion.

NOx is the main reason for forming photochemical pollution, and the combustion of the fully premixed surface can reduce local high temperature and realize low nitrogen, but the stable burning head and the safety concern about safe production.

In the using process of the burner, the gas and the air are mixed and then are ignited to realize combustion, but gas swirl phenomenon can occur after the gas and the air are mixed, so that the mixed gas rolls in the combustion, the swirl is easy to occur at the position of an air outlet of the burner, the gas is insufficiently combusted, the temperature of the gas combustion on the inner surface of a combustion head is different, the partial temperature of the burner is overhigh to cause burnout, the use is unsafe, and the service life is also prolonged.

Simultaneously need carry out the operation according to the heat requirement of difference in present combustor use, when the combustor is connected with a plurality of heated body, the heating temperature requirement of the heated body of difference is different, needs carry out actual regulation, consequently need adjust the heating strength of the different connectors of combustor, need adjust the burning strength of combustor, the regulation in the work needs of being convenient for.

Disclosure of Invention

An object of the utility model is to provide a can control low-nitrogen burner of regional intensity of surface combustion, through the inside a plurality of bays that separately set up of this combustion head to be provided with the separation blade according to the difference that actual heating required at the bay front end, the separation blade is that a plurality of not isostructures assemble and form, can install according to actual requirement and adjust, is convenient for to the regulation of different bay burning intensity, simple structure, convenient operation moreover.

The utility model provides a technical scheme that its technical problem adopted is: a low-nitrogen burner capable of controlling the intensity of a surface combustion area comprises an air filter, a Venturi mixing valve, a variable frequency fan, a mixed gas rectifier and a burner head shell, wherein the burner head shell is of a circular structure, a clapboard which is coaxially arranged with the combustion head shell is arranged in the combustion head shell and is connected with a fixed plate on the mixed gas rectifier, the circumference of the clapboard is evenly arranged in the combustion head shell to evenly separate the combustion head inner cavity, a baffle structure for controlling the combustion intensity is arranged between the combustion head and the gas mixture rectifier, the baffle structure comprises a middle fixing plate, a first layer of baffle, a second layer of baffle, a third layer of baffle and a fourth layer of baffle, the middle fixing plate is coaxial with the combustion head shell, and the middle fixing plate, the first layer of separation blade, the second layer of separation blade, the third layer of separation blade and the fourth layer of separation blade are sequentially connected and sequentially clamped through the fixing block and the fixing groove.

As optimization, burner head casing and gas mixture rectifier intercommunication, the gas mixture rectifier pass through the bolt and be connected with frequency conversion fan air outlet the gas mixture rectifier and frequency conversion fan link all be provided with flange, the air-supply line of frequency conversion fan be connected with the venturi mixing valve, the other end of venturi mixing valve be connected with air cleaner one side of venturi mixing valve still have the gas control valve through the pipe connection.

Preferably, the number of the partition plates is 4, 6 or 8, the partition plates are fixedly connected through a middle fixed shaft and are in bolt connection with a fixed plate on the mixed gas rectifier through the fixed shaft.

Preferably, the middle fixing plate is a circular plate, the middle fixing plate is coaxially and fixedly connected with the fixing shaft in the middle of the partition plate, the first layer of separation blade, the second layer of separation blade, the third layer of separation blade and the fourth layer of separation blade are all arc-shaped separation blades, and the four layers of arc-shaped separation blades are used for sealing the cabin between two adjacent partition plates.

Preferably, the anti-skid bulges are arranged on the two side faces of the middle fixing plate, the first layer of baffle sheet, the second layer of baffle sheet, the third layer of baffle sheet and the fourth layer of baffle sheet.

Preferably, an ignition needle is arranged on the outer side of the combustion head shell, and the ignition needle is clamped and fixed through a clamping plate on the outer side of the combustion head shell.

Preferably, the gas control valve is externally connected with a gas inlet pipe, and the gas inlet pipe is communicated with a gas pipeline.

The utility model has the advantages that: compared with the prior art, the utility model discloses a can control low-nitrogen burner of regional intensity of surface combustion, at the inside baffle that is provided with a plurality of evenly distributed of combustion head, evenly separate the first inner chamber that will burn, form a plurality of bays, and be provided with the separation blade of control intensity of combustion at every bay front end, the separation blade is adjustable dismantlement mounting structure, in order to adjust the control of the inside intensity of combustion of different bays, the separation blade passes through fixed block and fixed slot and realizes the joint, be divided into four layers of arc separation blades, the volume that the realization control bay lets in mixed gas realizes the regulation of bay intensity of combustion.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a perspective view of the present invention;

FIG. 3 is a cross-sectional view of the burner head of the present invention;

FIG. 4 is a sectional view of the structure of the baffle plate of the present invention;

FIG. 5 is a structural diagram of a baffle plate structure according to one embodiment of the present invention;

FIG. 6 is an exploded view of the baffle structure of the present invention;

the gas burner comprises an air filter 1, a gas inlet pipe 2, a venturi mixing valve 3, a gas control valve 4, a variable frequency fan 5, a mixed gas rectifier 6, a combustion head shell 7, an ignition needle 8, a combustion zone 9, a partition plate 10, a fixing plate 11, a middle fixing plate 12, a first layer baffle plate 13, a second layer baffle plate 14, a third layer baffle plate 15, a fourth layer baffle plate 16, a fixing block 17 and a fixing groove 18.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the embodiment shown in fig. 1, a low-nitrogen burner capable of controlling the strength of a surface combustion area comprises an air filter 1, a venturi mixing valve 3, a variable frequency fan 5, a mixed gas rectifier 6 and a burner head shell 7, wherein the burner head shell 7 is of a circular structure, a partition plate 10 coaxially mounted with the burner head shell 7 is arranged in the burner head shell 7, the partition plate 10 is connected with a fixing plate 11 on the mixed gas rectifier 6, the circumference of the partition plate 10 is uniformly arranged in the burner head shell 7 to uniformly partition the inner cavity of the burner head, a baffle structure for controlling the combustion strength is arranged between the burner head shell 7 and the mixed gas rectifier 6, the baffle structure comprises a middle fixing plate 12, a first baffle 13, a second baffle 14, a third baffle 15 and a fourth baffle 16, the middle fixing plate 12 is coaxially arranged with the burner head shell 7, the middle fixing plate 12, the first layer of baffle plate 13, the second layer of baffle plate 14, the third layer of baffle plate 15 and the fourth layer of baffle plate 16 are sequentially connected and are sequentially clamped through the fixing block 17 and the fixing groove 18.

Combustion head casing 7 and gas mixture rectifier 6 intercommunication, gas mixture rectifier 6 pass through the bolt and be connected with 5 air outlets of frequency conversion fan gas mixture rectifier 6 and 5 links of frequency conversion fan all are provided with flange, 5 air-supply line of frequency conversion fan be connected with venturi mixing valve 3, the other end of venturi mixing valve 3 be connected with air cleaner 1 one side of venturi mixing valve 3 still have gas control valve 4 through the pipe connection.

Air is filtered through an air filter, dust in the air is filtered, the filtered air is mixed with gas, a gas inlet pipe is connected with a gas control valve and is communicated with a Venturi mixing valve, the Venturi mixing valve is a common Venturi valve which is communicated with a variable frequency fan, the variable frequency fan is electrified to form negative pressure, a ball body in the Venturi mixing valve is in an open state under the action of the negative pressure, the gas control valve is opened by detecting the pressure of a pipeline connected with the Venturi mixing valve to open the gas control valve to open the gas, the filtered air and the filtered gas are simultaneously introduced into the Venturi mixing valve, the air and the gas enter the Venturi mixing valve and then enter the variable frequency fan, the air and the gas enter a gas mixture rectifier again after passing through the variable frequency fan, and the air and the gas are fully mixed and uniformly mixed, under the effect of frequency conversion fan wind pressure, the misce bene's gas mixture enters into inside the combustion head, a plurality of circumference evenly distributed's that set up baffle, the cavity divide into a plurality of bays in the combustion head, and can not flow each other between every bay, the inside gas mixture's of every cabin stability has been guaranteed, gas mixture flows out the back from the combustion head, the ignition needle who sets up at the combustion head front end ignites, realize the combustor operation through igniteing, front end position at the combustion head is the combustion area, gas mixture through after the ignition forms at the combustion head front end position, the combustion area is as shown in figure 1 and figure 2.

The middle fixing plate 12 is a circular plate, the middle fixing plate 12 is coaxially and fixedly connected with a fixing shaft in the middle of the partition plate, the first layer of baffle plate 13, the second layer of baffle plate 14, the third layer of baffle plate 15 and the fourth layer of baffle plate 16 are all arc-shaped baffle plates, and the four layers of arc-shaped baffle plates realize the sealing of the cabin between two adjacent partition plates.

And anti-skid protrusions are arranged on two side surfaces of the middle fixing plate 12, the first layer of baffle plate 13, the second layer of baffle plate 14, the third layer of baffle plate 15 and the fourth layer of baffle plate 16.

The baffle structure for controlling the flow of the combustion gas mixture is arranged at the front end of each baffle plate, the baffle structure is formed by clamping and connecting arc-shaped plates with a plurality of arc-shaped structures, arc-shaped baffle plates are arranged on two adjacent baffle plates according to the number of the baffle plates arranged in the combustion head shell, the arc-shaped baffle plates are vertically arranged with the baffle plates, the sealing of the compartment is realized through the arc-shaped baffle plates in the sector area between the adjacent baffle plates, the sector area between each two adjacent baffle plates can be sealed through four layers of baffle plates, the baffle plate at the first layer is clamped on the middle fixed plate through the fixed block at the inner side, the middle fixed plate is fixedly arranged on the fixed shaft in the middle of the baffle plates and is fixedly arranged with the fixed plate, the compartment sealing is realized through the arc-shaped baffle plates arranged on each compartment, the arc-shaped baffle plates are divided, the ventilation cross section of the bulkhead can be adjusted through installation, and the installation and the disassembly are simple and convenient.

The outside of burning head casing 7 be provided with ignition needle 8, ignition needle 8 fixed through the cardboard joint in the burning head casing 7 outside.

The gas control valve 4 is externally connected with a gas inlet pipe 2, and the gas inlet pipe 2 is communicated with a gas pipeline.

In the embodiment shown in fig. 3, the number of the partition plates 10 is 6, the number of the partition plates can be designed into an even number of 4, 8, etc. according to actual working requirements, and the partition plates are evenly distributed on the circumference, so that the inner cavity of the combustion head can be equally divided, and the partition plates 10 are fixedly connected through a middle fixed shaft and are in bolt connection with a fixed plate 11 on the gas mixture rectifier 6 through the fixed shaft.

The fixed axle in the middle of the baffle is together fixed with a plurality of baffles, and welded fastening guarantees the stability of baffle moreover, and fixed axle and fixed plate bolted connection on the gas mixture rectifier are fixed simultaneously, and fixed plate fixed welding is on the gas mixture rectifier to also be provided with the hole of gas mixture circulation on the fixed plate.

The gas control valve is an electromagnetic control valve, after the reduction of the air pressure in the Venturi mixing valve is detected, the electromagnetic control valve is communicated through an electromagnetic signal, the electromagnetic control valve is in an open state, and the gas in the gas inlet pipe communicated with the electromagnetic control valve enters the Venturi mixing valve through the gas control valve and is mixed with the filtered air.

The above embodiments are only specific cases of the present invention, and the protection scope of the present invention includes but is not limited to the forms and styles of the above embodiments, and any suitable changes or modifications made thereto by those skilled in the art according to the claims of the present invention shall fall within the protection scope of the present invention.

Claims (7)

1. The utility model provides a can control regional intensity's of surface combustion low NOx burner, includes air cleaner (1), venturi mixing valve (3), variable frequency fan (5), gas mixture rectifier (6) and burner head casing (7), its characterized in that: the combustion head casing (7) be circular structure, be provided with in combustion head casing (7) with combustion head casing (7) coaxial arrangement's baffle (10), baffle (10) be connected with fixed plate (11) on gas mixture rectifier (6), baffle (10) circumference evenly set up and evenly separate the combustion head inner chamber in combustion head casing (7) inside the separation blade structure that is provided with control combustion strength between combustion head casing (7) and gas mixture rectifier (6), the separation blade structure include middle fixed plate (12), first layer separation blade (13), second layer separation blade (14), third layer separation blade (15) and fourth layer separation blade (16), middle fixed plate (12) and combustion head casing (7) coaxial arrangement, middle fixed plate (12), first layer separation blade (13), second layer separation blade (14), The third layer of baffle plate (15) and the fourth layer of baffle plate (16) are sequentially connected and are sequentially clamped through the fixing block (17) and the fixing groove (18).

2. The low-nitrogen burner capable of controlling the intensity of a surface combustion zone as claimed in claim 1, wherein: combustion head casing (7) and gas mixture rectifier (6) intercommunication, gas mixture rectifier (6) be connected with frequency conversion fan (5) air outlet through the bolt gas mixture rectifier (6) and frequency conversion fan (5) link all be provided with flange, the air-supply line of frequency conversion fan (5) be connected with venturi mixing valve (3), the other end of venturi mixing valve (3) be connected with air cleaner (1) one side of venturi mixing valve (3) still have gas control valve (4) through the pipe connection.

3. The low-nitrogen burner capable of controlling the intensity of a surface combustion zone as claimed in claim 1, wherein: the number of the partition plates (10) is 4, 6 or 8, the partition plates (10) are fixedly connected through a middle fixed shaft and are in bolt connection with a fixed plate (11) on the mixed gas rectifier (6) through the fixed shaft.

4. The low-nitrogen burner capable of controlling the intensity of a surface combustion zone as claimed in claim 1, wherein: middle fixed plate (12) be the circular slab, middle fixed plate (12) and the coaxial fixed connection of the fixed axle in the middle of the baffle, first layer separation blade (13), second layer separation blade (14), third layer separation blade (15) and fourth layer separation blade (16) be the arc separation blade to four layers of arc separation blade realize the sealed in cabin between two adjacent baffles.

5. The low-nitrogen burner capable of controlling the intensity of a surface combustion zone as claimed in claim 1, wherein: and anti-skid bulges are arranged on the two side surfaces of the middle fixing plate (12), the first layer of baffle sheet (13), the second layer of baffle sheet (14), the third layer of baffle sheet (15) and the fourth layer of baffle sheet (16).

6. The low-nitrogen burner capable of controlling the intensity of a surface combustion zone as claimed in claim 1, wherein: the outer side of the combustion head shell (7) is provided with an ignition needle (8), and the ignition needle (8) is clamped and fixed through a clamping plate on the outer side of the combustion head shell (7).

7. A low-nitrogen burner capable of controlling the intensity of a surface combustion zone as claimed in claim 2, wherein: the gas control valve (4) is externally connected with a gas inlet pipe (2), and the gas inlet pipe (2) is communicated with a gas pipeline.

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