CN210568400U - Open-flow gas burner with controllable air intake - Google Patents
Open-flow gas burner with controllable air intake Download PDFInfo
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- CN210568400U CN210568400U CN201921024051.2U CN201921024051U CN210568400U CN 210568400 U CN210568400 U CN 210568400U CN 201921024051 U CN201921024051 U CN 201921024051U CN 210568400 U CN210568400 U CN 210568400U
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Abstract
The utility model provides a blowout gas burner with controllable air intake, which comprises a base, an outer sleeve and a fuel nozzle, wherein the two ends of the outer sleeve are respectively provided with an air inlet and a discharge port, the fuel nozzle is positioned inside the outer sleeve, the fuel nozzle is provided with a plurality of fuel spray holes, and each fuel spray hole faces to the discharge port of the outer sleeve; the air inlet is provided with an air inlet amount adjusting assembly, and the air inlet amount adjusting assembly is used for adjusting the opening amplitude of the air inlet. In the technical scheme, the utility model provides a controllable open flow gas burner of intake, it has following technological effect: airflow turning and resonance inside the outer sleeve are eliminated; the openings at the two ends of the outer sleeve reduce or even eliminate the phenomenon that the outer sleeve is burnt out, and the speed generated by the fuel spray holes is utilized to bring a large amount of oxygen for supporting combustion, thereby improving the combustion efficiency and reducing the phenomenon of black smoke. The fuel is adapted to different conditions.
Description
Technical Field
The utility model relates to an oil drilling technique, concretely relates to controllable open flow gas combustion ware of intake.
Background
The oil and gas produced during Testing of oil and gas wells cannot be stored in large quantities and transported away by other means and must be subjected to a combustion process by means of blow-out (Well Testing) burners.
Fig. 1 is a side view of a prior art open-jet burner, and fig. 2 is a front view of a prior art open-jet burner, as shown in fig. 1-2, the prior art open-jet burner includes an outer sleeve 4 ' having an open end and a closed end, a fuel nozzle 2 ' is disposed in the outer sleeve 4 ', a plurality of fuel nozzles 3 ' are disposed in the fuel nozzle 2 ' and are radially arranged along the outer sleeve 4 ', and in general, 5 rows of circumferential fuel nozzles 3 ' are formed in the fuel nozzle 2 ', and each row has 8 fuel nozzles 3 '. When the combustion chamber works, fuel enters the sealed cylindrical outer sleeve 4 ' through the jet flow of the annular fuel spray holes 3 ', and is sprayed out through vertically turning to the outlet of the outer sleeve 4 ', and then can be contacted with the outside air to be ignited and combusted. At present, most of the open-jet combustors need to burn natural gas between 50 ten thousand square and 100 ten thousand square, and when 50 ten thousand square natural gas is produced daily in the existing open-jet combustors, the flow velocity of the fuel spray holes 3 ' passing through the combustors is about 293.62m/s, and the flow velocity of the fuel spray holes 6 ' passing through the outer sleeve 4 ' of the combustors is about 11.19 m/s. Visible to the naked eye: the flame is immediately burnt upwards after being sprayed out, and the height of the flame is about 8-10 meters; at 100 ten thousand cubic feet of natural gas produced per day, the flow velocity through the fuel nozzle 3 'of the burner is about 683.45m/s, the flow velocity through the outlet of the outer sleeve 4' of the burner is about 26.04m/s, and the flow velocity is visible to the naked eye: the flame burns upward immediately after being sprayed out, and the height of the flame is about 12 meters.
The defects of the prior art are that high-frequency jet flow noise (sharp squeaking sound) is formed by high-speed injection of the fuel spray holes 3 ' in the outer sleeve 4 ', resonance is easily formed in the outer sleeve 4 ', noise is amplified, meanwhile, the outlet flow speed of the outer sleeve 4 ' is low and is only about 11m/s, the kinetic energy of large-section low-speed injection of fuel is small, the mixing state with outside air is poor, the ignition point is burnt in a diffusion combustion mode and is not far away from the outlet of the outer sleeve 4 ', and an upward burning flame form is formed under the action of buoyancy. In addition, because no air is supplied inside the outer sleeve 4 ', the heat at the root of the ignition point is low, the flame root is unstable, turbulent pulsation is relatively large, the influence of the environment is severe, and the rear cold air cannot enter the outer sleeve 4 ' to cool, so that the outer sleeve 4 ' is deformed and damaged under high-temperature radiation.
Fig. 3 and 4 show a geometric modeling of a blowout burner, a blowout flow chart and a nozzle local flow chart in the prior art, fig. 5 and 6 show a cloud chart of external temperature distribution of the blowout burner and the external flame shape of the blowout burner, respectively, and as shown in fig. 3-6, a sufficiently large calculation area is designed to study the specific process of the blowout burner according to the size of the combustion flame and the heat radiation influence area of the blowout burner. And discretizing by adopting a structured grid to establish a proper geometric grid model. The whole velocity streamline of the open-flow fuel and the local velocity streamline near the open-flow nozzle can show that the flow velocity at the radial fuel spray hole 3 'in the combustor is higher, the flow velocity in the cylindrical outer sleeve 4' is obviously reduced, the fuel is changed into an upward flow process under the influence of buoyancy and combustion reaction immediately after being sprayed out of the cylindrical spray hole, and the formed flue gas drives the unburned fuel to gradually increase the flow velocity along with the progress of the combustion reaction to present vertical ascending flow. As the velocity distribution analysis above shows, the fuel flow and the distribution of the high temperature zone formed during the combustion reaction are also shown, and the fuel flows out of the outer sleeve 4' and rises upward. In addition, due to the low velocity at the outlet of the outer sleeve 4 ', the injected fuel exhibits a diffusion combustion condition, the flame root is closer to the outlet of the outer sleeve 4', and the flame drift is unstable. As shown in FIG. 6, a 1500K high temperature annular flame is formed at the outer ring of the nozzle of the outer burner sleeve 4 ', which easily causes the outer burner sleeve 4' to be deformed by heat.
In summary, the blow-out burners of the prior art have the following disadvantages:
firstly, the fuel injection speed at the radial fuel spray holes 3 'of the burner fuel nozzle 2' is too high, the daily open injection quantity is more than 600m/s at 100 ten thousand square, and the formed high-frequency jet flow noise cannot be avoided;
secondly, the fuel injection speed at the outlet of the circular outer sleeve 4' of the burner is too low, and the cold air at the rear part is not replaced and cooled, so that the ignition point is too close to form stronger heat radiation to burn out the burner body;
thirdly, the jet speed of the outlet of the outer sleeve 4' is too low, the kinetic energy is small, effective fuel and air cannot be fully sheared and mixed, a premixed combustion state cannot be formed, the combustion process cannot be strengthened, the combustion efficiency is low due to the fact that the existing diffusion combustion state is easily interfered by the external environment, the flame root is unstable, the rigidity of the formed flame is insufficient, insufficient carbon particles are separated out due to flow change or large-flow open injection, and the phenomenon of black smoke is caused;
fourthly, the fluctuation range of the quantity of the fuel to be combusted in the oil-gas testing process is large, the prior art has no corresponding air flow adjusting structure,
SUMMERY OF THE UTILITY MODEL
The purpose of the utility model is to provide
In order to achieve the above object, the present invention provides the following technical solutions:
a blowout gas burner with controllable air intake, which comprises a base, an outer sleeve and a fuel nozzle,
the fuel nozzle is positioned in the outer sleeve, a plurality of fuel spray holes are formed in the fuel nozzle, and each fuel spray hole faces the discharge hole of the outer sleeve;
the air inlet is provided with an air inlet amount adjusting assembly, and the air inlet amount adjusting assembly is used for adjusting the opening amplitude of the air inlet.
In the open-flow gas burner, the air inlet amount adjusting assembly comprises a central shaft and a plurality of adjusting plates rotatably connected to the central shaft, and each adjusting plate has a closed position and an air inlet position on a rotating stroke;
in the closed position, each adjusting plate closes the air inlet, and in the air inlet position, each adjusting plate at least partially overlaps to expose a portion of the air inlet.
In the open-flow gas burner, the adjusting plate is a sector plate.
In the open-flow gas burner, the number of the sector plates is 6.
In the open-flow gas burner, the radial dimension of the middle of the inner hole of the outer sleeve is smaller than the radial dimensions of the two ends of the inner hole of the outer sleeve, and the radial dimensions of the outer sleeve gradually change from the middle to the two ends of the outer sleeve.
In the open-flow gas burner, the fuel nozzle comprises a central main cylinder and a plurality of radial branch cylinders communicated with the central main cylinder, and a plurality of fuel spray holes are formed in the central main cylinder and each radial branch cylinder.
In the open-jet gas burner, each fuel nozzle hole is located at a position where the radial dimension in the outer sleeve is smallest.
In the open-jet gas burner, the central axis of each fuel nozzle hole and the central axis of the outer sleeve are arranged in an outward inclination angle.
In the technical scheme, the utility model provides a controllable open flow gas burner of intake, it has following technological effect:
firstly, the fuel spray holes are arranged along the axial direction of the outer sleeve, so that the air flow turning and resonance inside the outer sleeve are eliminated, and the noise is weakened to a certain extent;
secondly, openings are formed in two ends of the outer sleeve, a large amount of high-speed airflow is generated by using the speed generated by the fuel spray holes, and the high-speed airflow flows through the outer sleeve to realize cooling, so that the phenomenon that the outer sleeve is burnt out is reduced or even eliminated;
and thirdly, the two ends of the outer sleeve are opened, and the speed generated by the fuel spray holes is utilized to bring a large amount of oxygen for combustion supporting, so that the combustion efficiency is improved, and the phenomenon of black smoke emission is reduced.
Fourthly, the regulation of the air intake is realized through the air intake regulating assembly, so that the fuel under different conditions is subjected to adaptive regulation.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
FIG. 1 is a side view of a prior art blowout combustor;
FIG. 2 is a front view of a prior art blowout burner;
FIGS. 3-4 are a prior art open-flow combustor geometric modeling and open-flow flowsheet and a nozzle local flowsheet;
FIGS. 5-6 illustrate prior art cloud charts of the external temperature distribution of open-flow combustion and the external flame patterns of open-flow combustors;
fig. 7 is a side view of a blowout combustor provided in accordance with an embodiment of the present invention;
fig. 8 is a front view of a blowout burner according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a pipe clamp according to an embodiment of the present invention;
fig. 10 is a partial schematic structural view of a pipe clamp according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a plate connecting body and a pressing member provided in an embodiment of the present invention.
Description of reference numerals:
the prior art is as follows:
1', a gas inlet connecting pipe; 2', a fuel nozzle; 3', fuel injection holes; 4', an outer sleeve; 5', a burner mount; 6', a discharge hole;
the utility model discloses:
1. a gas inlet connecting pipe; 2. an air intake regulating assembly; 3. a fuel injector; 4. a radial support cylinder; 5. an outer sleeve; 6. a base; 7. a discharge port; 8. a fuel injection hole is formed.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 7-11, an open-flow gas burner with controllable air intake provided by an embodiment of the present invention includes a base 6, an outer sleeve 5 and a fuel nozzle 3, an air inlet and a discharge port 7 are respectively formed at two ends of the outer sleeve 5, the fuel nozzle 3 is located inside the outer sleeve 5, a plurality of fuel nozzles 8 are provided on the fuel nozzle 3, and each fuel nozzle 8 faces the discharge port 7 of the outer sleeve 5; and the air inlet is provided with an air inlet amount adjusting assembly 2, and the air inlet amount adjusting assembly is used for adjusting the opening amplitude of the air inlet.
Specifically, the base 6 is a fixed reference of the high-efficiency blowout burner, and is generally a support structure, and may optionally be other metal or concrete base structures, the outer sleeve 5 is fixed on the base 6, the two ends of the outer sleeve 5 are open, the opening at one end of the outer sleeve 5 is an air inlet, the opening at the other end of the outer sleeve is an outlet 7, the fuel nozzle 3 is located in the outer sleeve 5, the fuel nozzle 3 is connected to the gas inlet adapter 1, fuel such as natural gas is delivered to the fuel nozzle 3 through the gas inlet adapter 1, the fuel nozzle 3 is provided with a plurality of fuel nozzle holes 8, each fuel nozzle hole 8 is arranged along the axial direction of the outer sleeve 5, here, the arrangement of the fuel nozzle holes 8 along the axial direction of the outer sleeve 5 should be: the central axis of the fuel spray holes 8 is parallel or basically parallel to the central axis of the outer sleeve 5, for example, the included angle between the central axis and the central axis is less than 20 degrees, namely, the fuel flow sprayed out through the fuel spray holes 8 directly impacts the discharge hole 7 of the outer sleeve 5 instead of impacting the inner wall of the outer sleeve 5 to turn internally, so that resonance is reduced, and the sound volume of noise is reduced.
In the high-efficiency open-jet burner provided by this embodiment, the air inlet of the outer sleeve 5 is provided with the air inlet adjusting assembly 2, and the air inlet adjusting assembly 2 is used for adjusting the opening range of the air inlet, and the specific structure thereof can refer to various air door structures in the prior art, such as an opening range control structure on a fan, the simplest structure is a louver structure, and such as a single sheet or a plurality of sheets are movably connected to the air inlet, and the single sheet or the plurality of sheets are connected in a sliding or rotating manner, such as the single sheet completely covers the air inlet, and the sliding or rotating connection is connected to the air inlet, and the degree of covering the air inlet is adjusted in the sliding or rotating process, obviously, two or even more sheets have the. In this embodiment, the adjustment of the sheet material may be manual or automatic. The sliding and rotating of the plate enables the area of the plate covering the air inlet to be different, so that the opening amplitude of the air inlet is adjusted, and the air inflow of the air inlet is adjusted.
In the high-efficiency open-jet combustor provided by the embodiment, when in use, fuel is sprayed from the fuel spray holes 8, is sprayed substantially along the direction of the central axis of the outer sleeve 5, and is directly sprayed from the discharge hole 7, due to the high-speed spraying of the fuel, air is synchronously driven to enter from the air inlet of the outer sleeve 5 at a high speed, and then is sprayed from the discharge hole 7 of the outer sleeve 5 at a high speed, namely the mixture of the air and the fuel flow is sprayed from the discharge hole 7 of the outer sleeve 5, and then the mixture is ignited on the outer side of the outer sleeve 5, so that open-jet. Meanwhile, before each open flow, the air inlet quantity adjusting component 2 is adjusted to a corresponding amplitude in advance according to the quantity of fuel required to be combusted, so that the air inlet quantity of the air inlet is controlled.
In the technical scheme, the utility model provides a controllable open flow gas burner of intake, it has following technological effect:
firstly, the fuel spray holes 8 are arranged along the axial direction of the outer sleeve 5, so that the air flow turning and resonance inside the outer sleeve 5 are eliminated, and the noise is weakened to a certain extent;
secondly, two ends of the outer sleeve 5 are provided with openings, a large amount of high-speed airflow is brought by the speed generated by the fuel spray holes 8, and the high-speed airflow flows through the outer sleeve 5 to realize cooling, so that the phenomenon that the outer sleeve 5 is burnt out is reduced or even eliminated;
thirdly, the two ends of the outer sleeve 5 are opened, and the speed generated by the fuel spray holes 8 is utilized to bring a large amount of oxygen combustion supporting, so that the combustion efficiency is improved, and the phenomenon of black smoke emission is reduced.
Fourthly, the adjustment of the air intake is realized through the air intake adjusting component 2, so that the fuel under different conditions is adaptively adjusted.
The utility model provides a blowout gas burner, as shown in fig. 9-11, preferably, intake adjusting assembly 2 includes the center pin and rotates a plurality of regulating plates that are connected on the center pin, the regulating plate is the sector plate, the sector plate is 4 according to actual demand and even tens, if 6, wherein part sector plate can rotate with the center pin, realizes the coincidence after rotating, each regulating plate has closed position and air inlet position on the rotation stroke; in the closed position, the edges of the adjusting plates are connected with and close the air inlets one by one, and in the air inlet position, the adjusting plates are at least partially overlapped to expose a part of the air inlets, so that the opening amplitude of the air inlets is adjusted.
The utility model provides a further embodiment, it is further, radial dimension is less than the radial dimension at both ends in the middle of the hole of outer sleeve 5, and the radial dimension that is the outer sleeve 5 middle zone is less also, and both ends are great, and the thin both ends in the through-hole center in outer sleeve 5 are thick, outer sleeve 5 changes gradually to both ends radial dimension from the centre, also from centre to both ends smooth transition, so set up be used in that, the air is got into by the air intake by the fuel flow drive of high-speed injection, and discharge gate 7 discharges, and the thick structure in the thin both ends in centre makes the air current form in the middle of relatively high speed, the mobile form of both ends relatively low-speed, so be convenient for the high-speed injection to the fuel flow of fuel orifice 8 department, and the air current that disperses at relatively low.
In still another embodiment, furthermore, the fuel nozzle 3 includes a central main cylinder and a plurality of radial branch cylinders 4 connected to the central main cylinder, the central main cylinder and each of the radial branch cylinders 4 are provided with a plurality of fuel nozzles 8, the central main cylinder is connected to the gas inlet pipe 1, each radial branch cylinder 4 is connected to the central main cylinder, preferably, the number of the radial branch cylinders 4 is between 8-12, most preferably 10, and the plurality of radial branch cylinders 4 disperse the uniform fuel flow to be sprayed, so as to facilitate the sufficient mixing of the fuel and the air.
More preferably, each of the fuel injection holes 8 is located at the position of minimum radial dimension inside the outer sleeve 5, i.e. the position of maximum air velocity of the fuel flow at the fuel injection hole 8, so as to maximize the maximum velocity of the utilized air.
Still further, the central axis of each fuel nozzle hole 8 and the central axis of the outer sleeve 5 are arranged in an outward inclination angle, where the outward inclination angle refers to that the central axis of each fuel nozzle hole 8 extends towards the direction departing from the central axis of the outer sleeve 5, that is, the distance between the fuel flow ejected from each fuel nozzle hole 8 and the central axis of the outer sleeve 5 gradually increases, the fuel flow jet ejected by the fuel nozzle holes 8 as a whole is in a divergent shape and has the smallest radial dimension of the root, and then the fuel flow jet gradually increases to increase the mixed air amount, thereby improving the fuel efficiency, and preferably, the outward inclination angle is between 10 and 20 degrees. The number of the fuel injection holes 8 is between 40 and 60.
The fuel nozzle 3 is changed into a multi-branch structure, a plurality of fuel spray holes 8 with certain inclination angles outwards are arranged on each radial branch cylinder body 4, the variable radial injection is the injection towards the discharge hole 7 of the outer sleeve 5, the number of the fuel spray holes 8 is increased, the jet speed of the fuel spray holes 8 is reduced, and the jet noise is reduced.
The outer sleeve 5 is changed into a design with two open ends, a Venturi structure is additionally arranged on the inner wall of the outer sleeve 5, negative pressure is formed at the position of a Venturi throat part structure through high-speed jet flow in front of a fuel spray hole 8 to inject cold air at the rear part of the combustor to enter the inner part of the outer sleeve 5 of the combustor forwards, and the fuel spray nozzle 3 and the outer sleeve 5 are cooled to ensure that the adverse effect of high-temperature radiation on the combustor body is restrained by cooling under high-temperature heat radiation.
Through the multi-branch multi-fuel spray holes 8, the fuel is sprayed forwards and is injected into the venturi tube structure in the outer sleeve 5, the premixing state of the fuel and air is strengthened, after a fuel-air mixture in a high mixing state is formed in the outer sleeve 5, the fuel and air are sprayed out of the outer sleeve 5 at a high speed, the formed flame root can be far away from an outlet of the outer sleeve 5, meanwhile, high-rigidity root combustion flame can be formed through efficient combustion of the premixed fuel, the premixed fuel effectively extends towards the jet flow direction, and then the premixed fuel gradually combusts upwards under the action of buoyancy. Reduce black smoke and flame heat radiation damage to the burner body.
The cross-sectional area of air flowing into the tail of the outer sleeve 5 is controlled to be 0-67% through the three-piece rotatable air door. In different open flow combustion processes, the impact of cold air entering the combustor outer sleeve 5 by negative pressure injection of fuel can be controlled by utilizing a rear three-piece rotatable air door according to the open flow environment and the open flow magnitude to the root of the combustion flame, and the stability of the flame combustion is controlled.
10 radial sub-cylinders are arranged, 4-5 fuel spray holes 8 are formed in each sub-cylinder, and the fuel is sprayed forwards at 15-17 degrees in an inclined mode. The interior of the outer sleeve 5 is additionally provided with a refractory material and an external 5mm steel plate, a through hole is formed in the tail portion of the outer sleeve 5, and the interior of the outer sleeve 5 is mixed with gas to form local premixed combustion by utilizing front-end fuel injection energy and a negative-pressure injection air multiplication technology, so that combustion is enhanced, and flame rigidity and flame stability are improved. And adopt three rotatable orifice plates to constitute afterbody adjustable air door structure, the control gets into 5 afterbody of outer sleeve 0 ~ 67% continuous adjustable of air flow cross sectional area, in different open flow combustion processes, all can utilize three rotatable air door control fuel negative pressure at rear portion to draw according to open flow environment and open flow magnitude and draw the impact of penetrating the inside cold air that gets into the combustor sleeve to burning flame root, the stability of control flame burning forms the negative pressure with the inside high-speed efflux fuel gas of outer sleeve 5 and draws the rear portion air of multiplication and cool off the combustor body, prevent that the combustor from being heated and warp. Further, for noise control, jet noise and combustion noise are reduced by accurately calculating the gas velocity of the fuel injection holes 8. The inner wall of the air door at the rear part of the combustor can be provided with a light refractory castable interlayer with the thickness of 50-100 mm to form a silencer. Under the open-flow working condition of 50-100 ten thousand square/day. Experiments show that the flow velocity of the through hole of the burner nozzle is reduced to 163-327 m/s, and the generation of jet flow noise is effectively reduced. Meanwhile, the novel multi-branch spray head forms multi-strand jet flow which can form better shearing mixing with air to form a premixing efficient combustion state, the combustion efficiency is improved, and meanwhile, the flame of the burner, which is forward jet flow, is changed from soft upward combustion into a forward jet high-rigidity flame combustion state which is far away from the burner body. Meanwhile, the high-speed jet forms negative pressure injection, the temperature of the burner body is reduced through supplement of cold air at the rear part, and the three air quantity adjustable air door structures are additionally arranged, so that stable and efficient combustion in different discharge quantities under different environments is met.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (8)
1. A blowout gas burner with controllable air intake comprises a base, an outer sleeve and a fuel nozzle, and is characterized in that,
the fuel nozzle is positioned in the outer sleeve, a plurality of fuel spray holes are formed in the fuel nozzle, and each fuel spray hole faces the discharge hole of the outer sleeve;
the air inlet is provided with an air inlet amount adjusting assembly, and the air inlet amount adjusting assembly is used for adjusting the opening amplitude of the air inlet.
2. The open-flow gas burner of claim 1, wherein said intake air regulating assembly includes a central shaft and a plurality of regulating plates rotatably connected to said central shaft, each of said regulating plates having a closed position and an air intake position on a rotational stroke;
in the closed position, each adjusting plate closes the air inlet, and in the air inlet position, each adjusting plate at least partially overlaps to expose a portion of the air inlet.
3. The open-flow gas burner of claim 2, wherein said regulating plate is a sector plate.
4. The open-flow gas burner of claim 3, wherein there are 6 of said sector plates.
5. The open-flow gas burner of claim 1,
the middle radial dimension of the inner hole of the outer sleeve is smaller than the radial dimensions of the two ends, and the radial dimensions of the outer sleeve gradually change from the middle to the two ends.
6. The open-flow gas burner of claim 5, wherein the fuel injector comprises a central main cylinder and a plurality of radial branch cylinders communicating with the central main cylinder, and a plurality of fuel injection holes are formed in the central main cylinder and each of the radial branch cylinders.
7. The open-jet gas burner of claim 6, wherein each of said fuel orifices is located at a position of minimum radial dimension within said outer sleeve.
8. The open-jet gas burner of claim 6, wherein a central axis of each of said fuel orifices is disposed at an outward inclination from a central axis of said outer sleeve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921024051.2U CN210568400U (en) | 2019-07-02 | 2019-07-02 | Open-flow gas burner with controllable air intake |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921024051.2U CN210568400U (en) | 2019-07-02 | 2019-07-02 | Open-flow gas burner with controllable air intake |
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| CN210568400U true CN210568400U (en) | 2020-05-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110220191A (en) * | 2019-07-02 | 2019-09-10 | 中国石油集团长城钻探工程有限公司 | The controllable open flow gas burner of intake |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110220191A (en) * | 2019-07-02 | 2019-09-10 | 中国石油集团长城钻探工程有限公司 | The controllable open flow gas burner of intake |
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