阅读说明：本技术 一种点火枪 (Ignition gun ) 是由 张云光 王晓东 汪蕾 罗仁江 岳志坚 罗欣 于 2021-07-19 设计创作，主要内容包括：本发明公开了一种点火枪,包括输送管以及喷嘴,输送管的一端设有比例器,另一端与喷嘴可拆卸连接,所述比例器包括传动机构、入口端盖以及用于安装传动机构以及入口端盖的比例器本体,所述比例器本体的腔体中间设有隔板,所述隔板将比例器本体的腔体分隔成两个输送腔体；所述传动机构一以及传动机构二分别置于所述比例器本体的两个输送腔体内,所述两个输送腔体除去传动机构所占容积的空腔容积比为空气燃烧比,所述隔板上设有一个通孔,所述传动机构二上的传动轴二穿过通孔与所述传动机构一同轴连接。本发明通过改变两个传动机构的大小来控制输送腔体的容积大小达到两种气体精确的体积比,实现了燃料与空气的配比准确性。(The invention discloses an ignition gun, which comprises a conveying pipe and a nozzle, wherein one end of the conveying pipe is provided with a proportioner, the other end of the conveying pipe is detachably connected with the nozzle, the proportioner comprises a transmission mechanism, an inlet end cover and a proportioner body used for installing the transmission mechanism and the inlet end cover, a partition plate is arranged in the middle of a cavity of the proportioner body, and the partition plate divides the cavity of the proportioner body into two conveying cavities; the first transmission mechanism and the second transmission mechanism are respectively arranged in the two conveying cavities of the proportioner body, the cavity volume ratio of the two conveying cavities except the volume occupied by the transmission mechanism is the air combustion ratio, the partition plate is provided with a through hole, and the second transmission shaft on the second transmission mechanism penetrates through the through hole to be connected with a coaxial shaft of the transmission mechanism. The invention controls the volume of the conveying cavity to achieve the accurate volume ratio of the two gases by changing the sizes of the two transmission mechanisms, thereby realizing the matching accuracy of the fuel and the air.)

1. An ignition gun comprises a conveying pipe (5) and a nozzle (6), and is characterized in that one end of the conveying pipe (5) is provided with a proportioner, the other end of the conveying pipe is detachably connected with the nozzle (6), the proportioner comprises a transmission mechanism, an inlet end cover and a proportioner body (1) used for installing the transmission mechanism and the inlet end cover, a partition plate is arranged in the middle of a cavity of the proportioner body (1), and the partition plate divides the cavity of the proportioner body (1) into two conveying cavities; the transmission mechanism comprises a first transmission mechanism and a second transmission mechanism, the first transmission mechanism and the second transmission mechanism are respectively arranged in two conveying cavities of the proportioner body (1), the two conveying cavities are removed, the cavity volume ratio of the occupied volume of the transmission mechanism is the air combustion ratio, a through hole is formed in the partition plate, and a second transmission shaft (10) on the second transmission mechanism penetrates through the through hole and is connected with a coaxial of the transmission mechanism.

2. An ignition gun as claimed in claim 1, characterized in that said inlet end cover is detachably connected to said proportioner body (1), said inlet end cover comprising a fuel inlet (410) and an air inlet (420), said fuel inlet (410) being connected to a gas delivery chamber for housing said first transmission mechanism, said air inlet (420) being connected to a gas delivery chamber for housing said second transmission mechanism.

3. An ignition gun according to claim 1, characterized in that the first transmission mechanism comprises a first gear (17), a second gear (18) and a first end cover (3) for mounting the first gear (17) and the second gear (18), the first gear (17) is meshed with the second gear (18), the second gear (18) is provided with a first transmission shaft (19), two ends of the first transmission shaft (19) are provided with a fifth bearing (20) and a sixth bearing (21), the outer ring of the fifth bearing (20) is mounted on the first end cover (3), and the outer ring of the sixth bearing (21) is mounted on the partition plate.

4. The ignition gun according to claim 1, wherein the second transmission mechanism comprises a third gear (8), a fourth gear (9) and a second end cover (2), the third gear (8) is meshed with the fourth gear (9), the second transmission shaft (10) is provided with a first bearing (11) and a second bearing (12), and an outer ring of the first bearing (11) is mounted on the second end cover (2); the gear four (9) is provided with a transmission shaft three (14), two ends of the transmission shaft three (14) are provided with a bearing three (15) and a bearing four (16), the outer ring of the bearing three (15) is installed on the end cover two (2), and the outer ring of the bearing four (16) is installed on the partition plate.

5. The ignition gun according to claim 1, wherein two sealing rings (13) are arranged on the second transmission shaft (10), the sealing rings (13) are arranged in the through hole, an inspection hole (110) is arranged on the proportioner body (1), and the inspection hole (110) is connected with the through hole between the sealing rings (13).

6. An ignition gun as claimed in claim 1, characterized in that the gas delivery chamber of the proportioner body (1) is provided with a fuel outlet and an air outlet, the end of the delivery pipe (5) connected to the proportioner body (1) is provided with two gas inlets, and the other end is provided with a igniter hole (550), an air distribution hole (540) and a fuel distribution hole (530), the gas inlets comprise a fuel inlet of the delivery pipe (5) and an air inlet of the delivery pipe (5); the fuel outlet is connected with delivery pipe (5) fuel inlet, the air outlet is connected with delivery pipe (5) air inlet, delivery pipe (5) fuel inlet is connected inner tube (510) of delivery pipe (5), delivery pipe (5) air inlet is connected annular space (520) of delivery pipe (5), inner tube (510) with fuel distribution hole (530) are connected, annular space (520) with air distribution hole (540) are connected.

7. An ignition gun as claimed in claim 6, characterized in that a sparker is arranged in the annular space (520), said sparker passing through the sparker bore (550) to the compression section (610) of the nozzle (6).

8. An ignition gun according to claim 1, characterized in that the transmission mechanism and the inlet end cap are detachably connected to the proportioner body (1), and the delivery pipe (5) is detachably connected to the proportioner body (1).

Technical Field

The invention relates to the field of gas combustion ignition, in particular to an ignition gun.

Background

The burner is an important component of an industrial boiler, and the burning torch is an important component of the industrial burner. At present, the ignition guns mainly used are of two types, namely a type with combustion-supporting air and a type without combustion-supporting air. The igniting gun with combustion-supporting air has stronger adaptability to the change of the components of the environmental gas. However, the ignition gun with the combustion-supporting air still has the following problems: (1) the accurate proportion of combustion air and gas fuel is difficult to achieve; (2) the mixed gas in the ignition gun is difficult to ignite when the flow rate is too high; (3) when the flow rate of the mixed gas in the ignition gun is too low, the anti-interference capability of the flame after ignition is poor.

Chinese patent application No. 201410355035.7 discloses a premixed anti-interference burning torch for an industrial burner. By adding the windproof section, the flame anti-interference capability is improved. But still does not solve the problem of accurate proportioning of combustion air and gas fuel.

Disclosure of Invention

The invention aims to provide an ignition gun which achieves the accuracy of the ratio of fuel and air and strong anti-interference capability of flame after ignition.

The technical purpose of the invention is realized by the following technical scheme: an ignition gun comprises a conveying pipe and a nozzle, wherein one end of the conveying pipe is provided with a proportioner, the other end of the conveying pipe is detachably connected with the nozzle, the proportioner comprises a transmission mechanism, an inlet end cover and a proportioner body used for installing the transmission mechanism and the inlet end cover, a partition plate is arranged in the middle of a cavity of the proportioner body, and the partition plate divides the cavity of the proportioner body into two conveying cavities; the transmission mechanism comprises a first transmission mechanism and a second transmission mechanism, the first transmission mechanism and the second transmission mechanism are respectively arranged in two conveying cavities of the proportioner body, the two conveying cavities remove the cavity volume ratio of the occupied volume of the transmission mechanism and are air combustion ratio, a through hole is formed in the partition plate, and a second transmission shaft on the second transmission mechanism penetrates through the through hole and is connected with a coaxial of the transmission mechanism.

In the prior art, the accuracy of the proportion of air and fuel is realized by combining a fuel valve and an air valve, the accuracy of the valve can influence the accuracy of the proportion of the fuel due to the influence of the surrounding environment, the valve is easily damaged in the moving process by adopting the valve control, and the structure of the ignition gun with the valve is complex.

The invention controls the volume of the conveying cavity to achieve the accurate volume ratio of the two gases by changing the size of the two transmission mechanisms, the two transmission mechanisms are coaxially connected and have the same rotating speed, and the transmission mechanisms are arranged in the cavity of the proportioner and fixedly connected with the proportioner body, so that two transmission pumps are formed, and the gases with fixed proportion can be conveyed at the same rotating speed by accurately calculating the transmission parameters of the transmission pumps, thereby achieving the accuracy of the proportion of the fuel and the air. The air-fuel ratio is the mass of air required for combustion of a unit mass of fuel. Under full burn conditions, the theoretical air/fuel ratio decreases as the relative hydrogen content of the fuel decreases and the relative carbon content increases.

Further, the inlet end cover is detachably connected with the proportioner body, the inlet end cover comprises a fuel inlet and an air inlet, the fuel inlet is connected with a gas conveying cavity used for placing the first transmission mechanism, and the air inlet is connected with a gas conveying cavity used for placing the second transmission mechanism.

Furthermore, the first transmission mechanism comprises a first gear, a second gear and a first end cover used for installing the first gear and the second gear, the first gear is meshed with the second gear, the second gear is provided with a first transmission shaft, two ends of the first transmission shaft are provided with a fifth bearing and a sixth bearing, an outer ring of the fifth bearing is installed on the first end cover, and an outer ring of the sixth bearing is installed on the partition plate.

By adopting the technical scheme, the first transmission mechanism is detachably connected with the first end cover and the partition plate and is used for replacing transmission mechanisms with different sizes and thicknesses.

Further, the transmission mechanism II comprises a gear III, a gear IV and an end cover II, the gear III is meshed with the gear IV, a bearing I and a bearing II are arranged on the transmission shaft II, and an outer ring of the bearing I is arranged on the end cover II; the gear four is provided with a transmission shaft three, two ends of the transmission shaft three are provided with a bearing three and a bearing four, the outer ring of the bearing three is arranged on the end cover two, and the outer ring of the bearing four is arranged on the partition plate.

By adopting the technical scheme, the second transmission mechanism is detachably connected with the second end cover and the partition plate and is used for replacing transmission mechanisms with different sizes and thicknesses.

Furthermore, two sealing rings are arranged on the second transmission shaft, the sealing rings are arranged in the through holes, inspection holes are formed in the proportioner body, and the inspection holes are connected with the through holes between the sealing rings.

By adopting the technical scheme, the vertical through hole is used for checking whether fuel leaks.

Furthermore, a fuel outlet and an air outlet are arranged in a gas conveying cavity of the proportioner body, one end of the conveying pipe, which is connected with the proportioner body, is provided with two gas inlets, the other end of the conveying pipe is provided with a igniter hole, an air distribution hole and a fuel distribution hole, and the gas inlets comprise a conveying pipe fuel inlet and a conveying pipe air inlet; the fuel outlet is connected with delivery pipe fuel entry, the air outlet is connected with delivery pipe air inlet, delivery pipe fuel entry is connected the inner tube of conveyer pipe, delivery pipe air inlet is connected the annular space of conveyer pipe, the inner tube with the fuel distribution jogged joint, the annular space with the air distribution jogged joint.

Further, be provided with the lighter ware in the annular space, the electron lighter ware passes the lighter ware hole reaches the compression section of nozzle.

By adopting the technical scheme, the electronic igniter is arranged on the air side, and the safety of the medium before ignition is ensured.

Further, drive mechanism and entry end cover with the connection can be dismantled to the proportioner body, the conveyer pipe the connection can be dismantled to the proportioner body.

By adopting the technical scheme, each component of the ignition gun is convenient to disassemble and maintain and clean.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention relates to an ignition gun, which is characterized in that when the atmospheric pressure is constant, according to the air volume required by the unit volume of fuel for sufficient combustion, the volumes of two conveying cavities of a proportioner correspond to the air volume required by the unit volume of combustion for sufficient combustion, transmission mechanisms are arranged in the two conveying cavities, and the accurate proportion ratio is realized through the size of an inner gear of the transmission mechanism.

2. According to the ignition gun, the conveying pipe is divided and conveyed by the jacket pipeline, the ignition part of the electronic igniter is arranged at the front end of the nozzle, and the safety of a fuel medium before ignition is guaranteed.

3. The invention relates to an ignition gun, wherein a nozzle adopts a Laval tube, mixed gas in the Laval tube is firstly compressed and ignited by an electronic igniter in the area, the compressed mixed gas is ensured to be ignited more easily, the ignited gas starts to expand and accelerate after passing through a throat tube, plasma at the moment reaches supersonic speed and is not easy to be extinguished by external environment, and the flame is long and is suitable for igniting a combustible material body in the environment.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an axial cross-sectional view of a delivery tube of the present invention;

FIG. 3 is an axial cross-sectional view of the nozzle of the present invention;

FIG. 4 is a cross-sectional view of the body of the proportioner of the invention;

reference numbers and corresponding part names in the drawings: 1. a proportioner body; 2. a second end cover; 3. a first end cover; 4. an inlet port; 5. a delivery pipe; 6. a nozzle; 7. an electronic lighter; 8. a third gear; 9. a fourth gear; 10. a second transmission shaft; 11. a first bearing; 12. a second bearing; 13. a seal ring; 14. a third transmission shaft; 15. a third bearing; 16. a bearing IV; 17. a first gear; 18. a second gear; 19. a first transmission shaft; 20. a fifth bearing; 21. a sixth bearing; 110. inspecting the hole; 410. a fuel inlet; 420. an air inlet; 510. an inner tube; 520. an annulus; 530. a fuel distribution aperture; 540. air distribution holes; 550. drilling a hole of the igniter; 610. a compression section; 620. a throat; 630. and (4) an expansion section.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Examples

As shown in fig. 1, an ignition gun comprises a conveying pipe 5 and a nozzle 6, wherein one end of the conveying pipe 5 is provided with a proportioner, the other end of the conveying pipe 5 is detachably connected with the nozzle 6, the proportioner comprises a transmission mechanism, an inlet end cover and a proportioner body for mounting the transmission mechanism and the inlet end cover, a partition plate is arranged in the middle of a cavity of the proportioner body 1, and the partition plate divides the cavity of the proportioner body 1 into two conveying cavities; the transmission mechanism comprises a first transmission mechanism and a second transmission mechanism, the first transmission mechanism and the second transmission mechanism are respectively arranged in two conveying cavities of the proportioner body 1, the volume ratio of the two conveying cavities except the volume occupied by the transmission mechanism is the air combustion ratio, a through hole is formed in the partition plate, and a second transmission shaft (10) on the second transmission mechanism penetrates through the through hole to be connected with a coaxial shaft of the transmission mechanism.

The volume of the conveying cavity is controlled to reach the accurate volume ratio of the two gases by changing the sizes of the two transmission mechanisms, the two transmission mechanisms are coaxially connected and have the same rotating speed, and the transmission mechanisms are arranged in the cavity of the proportioner and fixedly connected with the proportioner body 1, so that the two transmission pumps are formed, the transmission parameters of the transmission pumps can be accurately calculated, the gases with the fixed proportion can be conveyed at the same rotating speed, and the accuracy of the proportion of the fuel and the air is achieved.

Specifically, as shown in fig. 1, the inlet end cover is detachably connected to the proportioner body 1, the inlet end cover includes a fuel inlet 410 and an air inlet 420, the fuel inlet 410 is connected to a gas delivery cavity for placing the first transmission mechanism, and the air inlet 420 is connected to a gas delivery cavity for placing the second transmission mechanism.

In this embodiment, two inlets are formed in the inlet end cover for sucking air and fuel when the transmission mechanism is in operation.

Specifically, as shown in fig. 1, the first transmission mechanism includes a first gear 17, a second gear 18, and a first end cover 3 for mounting the first gear 17 and the second gear 18, the first gear 17 is engaged with the second gear 18, the second gear 18 is provided with a first transmission shaft 19, two ends of the first transmission shaft 19 are provided with a fifth bearing 20 and a sixth bearing 21, an outer ring of the fifth bearing 20 is mounted on the first end cover 3, and an outer ring of the sixth bearing 21 is mounted on the partition plate.

The second transmission mechanism comprises a third gear 8, a fourth gear 9 and a second end cover 2, the third gear 8 is meshed with the fourth gear 9, a first bearing 11 and a second bearing 12 are arranged on the second transmission shaft 10, and the outer ring of the first bearing 11 is arranged on the second end cover 2; the fourth gear 9 is provided with a third transmission shaft 14, two ends of the third transmission shaft 14 are provided with a third bearing 15 and a fourth bearing 16, the outer ring of the third bearing 15 is arranged on the second end cover 2, and the outer ring of the fourth bearing 16 is arranged on the partition plate.

The first transmission mechanism and the second transmission mechanism of the embodiment are both formed by combining a transmission shaft, a gear and a bearing, so that the gear is arranged in two conveying cavities in the proportioner body 1, the gear and the gas conveying cavities form two gear pumps, and the driving gear operates to suck gas and fuel outside the ignition gun into fuel and air with corresponding volumes according to the space volume ratio of the gear edge to the gas conveying cavities.

Specifically, as shown in fig. 4, two sealing rings 13 are arranged on the second transmission shaft 10, the sealing rings 13 are arranged in the through holes, an inspection hole 110 is arranged on the proportioner body 1, and the inspection hole 110 is connected with the through hole between the sealing rings 13.

The present embodiment is provided with two packing rings 13 to prevent the fuel and air from being mixed at both ends of the through-hole, and the inspection hole 110 is used to detect whether the fuel is leaked.

Specifically, as shown in fig. 2, the gas delivery cavity of the proportioner body 1 is provided with a fuel outlet and an air outlet, one end of the delivery pipe 5 connected with the proportioner body 1 is provided with two gas inlets, the other end is provided with a igniter hole 550, an air distribution hole 540 and a fuel distribution hole 530, and the gas inlets include a fuel inlet 410 of the delivery pipe 5 and an air inlet of the delivery pipe 5; the fuel outlet is connected to the fuel inlet of delivery pipe 5, the air outlet is connected to the air inlet of delivery pipe 5, the fuel inlet 410 of delivery pipe 5 is connected to the inner pipe 510 of delivery pipe 5, the air inlet of delivery pipe 5 is connected to the annular space 520 of delivery pipe 5, the inner pipe 510 is connected to the fuel distribution holes 530, and the annular space 520 is connected to the air distribution holes 540.

The fuel inlet of the delivery pipe 5 and the air inlet of the delivery pipe 5 in this embodiment receive the fuel and the air, and the fuel and the air are not mixed immediately, but are delivered through the jacket pipe, the fuel is delivered by the inner pipe 510, and the air is delivered by the inner pipe 510 and the delivery pipe 5. The fuel and the air reach the fuel distribution holes 530 and the air distribution holes 540, respectively, and are sprayed and mixed. The igniter is moved from the air supply annulus 520 through the igniter bore 550 to the mixed gas position

Specifically, as shown in fig. 2 and 3, a sparker is disposed in the annular space 520 and passes through the sparker hole 550 to the compression section 610 of the nozzle 6.

In this embodiment, the nozzle 6 is a laval tube, a lighter is installed in an annular space formed between the inner tube 510 and the delivery tube 5 for air transmission to ensure safety of fuel before ignition, the lighter ignites mixed gas in the compression section 610 of the nozzle 6, the ignited gas starts to expand and accelerate after passing through the throat 620 and finally is ejected through the expansion section 630 of the nozzle 6, and at this time, plasma reaches supersonic speed, is not easily extinguished by external environment, has a long flame, and is suitable for igniting combustible gas in the environment.

Drive mechanism and entry end cover with the connection can be dismantled to the proportioner body, the conveyer pipe the connection can be dismantled to the proportioner body. Each component part of the ignition gun is convenient to disassemble, and the transmission mechanisms with different sizes and the impurities of each part of the ignition gun are convenient to maintain and replace.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.