CN115264520A - Powder fuel supply device - Google Patents
Powder fuel supply device Download PDFInfo
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- CN115264520A CN115264520A CN202210718895.7A CN202210718895A CN115264520A CN 115264520 A CN115264520 A CN 115264520A CN 202210718895 A CN202210718895 A CN 202210718895A CN 115264520 A CN115264520 A CN 115264520A
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- Prior art keywords
- piston
- fluidizing
- chamber
- powder
- hollow rod
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- 239000000843 powder Substances 0.000 title claims abstract description 118
- 239000000446 fuel Substances 0.000 title claims abstract description 107
- 238000005243 fluidization Methods 0.000 claims abstract description 41
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 238000010926 purge Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 45
- 238000000034 method Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
- F23K3/02—Pneumatic feeding arrangements, i.e. by air blast
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The application discloses powder fuel feeding device includes: the front end of the shell is provided with a first end cover; the piston is arranged in the shell and is in sliding connection with the shell in a sealing mode, a powder storage section for containing powder fuel is formed among the piston, the first end cover and the shell, a filter plate for filtering the powder fuel is arranged on the piston, a fluidization section communicated with the powder storage section is arranged at the rear end of the filter plate, and a powder outlet is formed in one end, far away from the filter plate, of the fluidization section; one end of the piston, which is close to the powder storage section, is provided with an air hole component communicated with a fluidizing air source; and the driving component drives the piston to move along the axial direction of the shell. Compared with the prior art, the powder fuel supply device is simple in structure and capable of achieving continuous and stable fluidization and supply of the powder fuel.
Description
Technical Field
The present application relates to the field of fuel supply technology for a pulverized fuel ramjet engine, and more particularly, to a pulverized fuel supply device.
Background
The powder fuel ramjet adopts high-energy metal or boron powder as fuel, has the advantages of adjustable thrust and high specific impulse of a liquid fuel ramjet, safety and reliability of a solid rocket ramjet, simple structure and the like, particularly the addition of the powder fuel into the solid/powder or liquid/powder fuel combined ramjet can greatly improve the specific impulse and other performances of the traditional ramjet, can improve and increase the original functions of the traditional ramjet, and is one of new-generation missile power devices with great development potential.
The powder fuel flows in a gas-solid two-phase mode under the action of the fluidization gas, so that the powder fuel ramjet has stronger flow rate regulation and control performance, and has multiple starting and thrust regulation functions. Meanwhile, the fuel flow regulation of the powder fuel ramjet belongs to a cold regulation mode, the density specific impulse is higher, compared with the flow-adjustable ramjet which is researched at present, the powder fuel ramjet has better performance, is particularly suitable for tasks in the aspects of large working airspace, requirement on multi-trajectory flight and the like, a powder fuel supply system is the key for realizing stable combustion and thrust regulation of the powder fuel ramjet, and the quality of the supply performance directly influences the performance of the engine.
In the prior art, the powder fuel in the cylinder is often pushed by the piston, the piston is powered by pneumatics or a motor and the like, but due to the action of friction force between the powder fuel and the inner wall of the cylinder, the piston is easy to generate a blocking phenomenon in the process of pushing the powder fuel, and the uniform powder pushing speed is difficult to ensure.
Therefore, there is a need for a powdered fuel supply device that can achieve continuous and stable fluidization and supply of powdered fuel.
Disclosure of Invention
In order to solve the technical problem, the application provides a powdered fuel supply device which can realize continuous and stable fluidization and supply of powdered fuel.
The technical scheme provided by the application is as follows:
a pulverized fuel supply apparatus comprising:
the front end of the shell is provided with a first end cover;
the piston is arranged in the shell and is in sliding connection with the shell in a sealing mode, a powder storage section for containing powder fuel is formed among the piston, the first end cover and the shell, a filter plate for filtering the powder fuel is arranged on the piston, a fluidization section communicated with the powder storage section is arranged at the rear end of the filter plate, and a powder outlet is formed in one end, far away from the filter plate, of the fluidization section;
an air hole assembly communicated with a fluidizing air source is arranged at one end of the piston close to the powder storage section;
and the driving component drives the piston to move along the axial direction of the shell.
Preferably, the fluidizing section comprises:
a first fluidization chamber and a second fluidization chamber;
the front end of the first fluidization chamber is communicated with the powder storage section, the inner cavity of the first fluidization chamber is conical and gradually shrinks towards one end of the powder outlet, the second fluidization chamber is specifically an axially telescopic hollow cavity, the front end of the hollow cavity is communicated with the first fluidization chamber, and the rear end of the hollow cavity is fixed with the shell.
Preferably, the second fluidizing chamber comprises:
a primary hollow rod connected to said piston and communicating with said first fluidizing chamber;
the second-stage hollow rod is sleeved at the rear end of the first-stage hollow rod;
the suit is in the hollow pole of tertiary of the hollow pole of second grade rear end, the hollow pole of tertiary is kept away from the one end of piston with the casing is fixed.
Preferably, the first and second electrodes are formed of a metal,
the aperture of the first-stage hollow rod is larger than that of the second-stage hollow rod, and the aperture of the second-stage hollow rod is larger than that of the third-stage hollow rod.
Preferably, the first and second electrodes are formed of a metal,
the junction of the first-level hollow rod and the second-level hollow rod is provided with a streamline transition surface.
Preferably, ,
a second end cover is arranged at the rear end of the shell, an outlet through which the rear end of the second fluidizing chamber passes is formed in the second end cover, and a sealed fluidizing air chamber is formed among the second end cover, the piston, the fluidizing section and the shell;
the piston is provided with an air flow channel for communicating the fluidizing air chamber and the air hole assembly;
a fluidizing gas connector for connecting the fluidizing gas chamber and the fluidizing gas source.
Preferably, the airflow passage includes:
the gas collecting cavity is arranged at the outer side of the first fluidization chamber;
a first channel communicating the gas collection chamber with the fluidizing gas chamber;
and the second channel is communicated with the gas collection cavity and the gas hole assembly.
Preferably, the vent assembly comprises:
an annular groove provided on a front end surface of the piston;
the first air holes are formed in the annular groove and communicated with the air collection cavity, multiple groups of the first air holes are formed, and the first air holes are uniformly formed in the annular groove.
Preferably, the air vent assembly further comprises:
a second air hole provided on an inner wall of the piston;
the air inlet of the second air hole is communicated with the air collecting cavity, the air outlet of the second air hole is formed in the front end of the filter plate, and the second air hole is obliquely arranged and used for sweeping the filter plate.
Preferably, the drive assembly comprises:
the push-pull rods are connected with the piston, at least two groups of push-pull rods are arranged, and the tail ends of the push-pull rods are connected with the push-pull seat;
and the driving piece is fixedly connected with the push-pull seat and drives the push-pull seat to reciprocate along the axis direction of the shell.
The invention provides a powder fuel supply device, which comprises a shell, a piston, a fluidization section and an air hole assembly, wherein a first end cover is arranged at the front end of the shell, the piston is arranged in the shell and is in sealing sliding connection with the shell, a powder storage section for containing powder fuel is formed among the shell, the piston and the first end cover, a filter plate is arranged on the piston and is used for filtering the powder fuel through the filter plate, the fluidization section is arranged at the rear end of the filter plate, a powder outlet is arranged at one end of the fluidization section, which is far away from the filter plate, and the air hole assembly is arranged at one end, which is close to the powder storage section, on the piston and is communicated with a fluidization air source, fluidization air in the fluidization air source is blown into the powder storage section through the air hole assembly to blow fuel columns to form the powder fuel, the powder fuel is enabled to pass through the filter plate to move to the fluidization section, and the powder fuel in the fluidization section realizes the supply of the powder fuel through the powder outlet.
Secondly, thereby often push away the powder fuel through promoting the piston and remove in the casing among the prior art, on the one hand, the coefficient of friction between the inner wall of powder fuel and casing is great, easily produces the phenomenon of card pause when promoting powder fuel, and on the other hand, because powder fuel is at the in-process of supplying with, powder fuel can the loss appear, and the frictional force between the inner wall of powder fuel and casing can reduce gradually, so, hardly guarantees even push rod speed. And the fluidization section in this application links to each other with the piston, and drives the axial displacement of piston along the casing through drive assembly, so, the frictional force between the inner wall of piston and casing keeps in a invariable state, can not produce great change along with the reduction of pulverized fuel's volume to realize continuous, stable fluidization and the supply of pulverized fuel.
Compared with the prior art, the powder fuel supply device in the embodiment of the invention has simple structure and can realize continuous and stable fluidization and supply of the powder fuel.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view (without a drive assembly) of a pulverized fuel supply apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a piston according to an embodiment of the present invention;
FIG. 3 is a schematic structural view (belt drive assembly) of a pulverized fuel supply apparatus according to an embodiment of the present invention;
fig. 4 is a cross-sectional view of fig. 3 provided in accordance with an embodiment of the present invention.
Reference numerals: 1. a housing; 2. a piston; 3. a mounting seat; 4. a fluidizing section; 5. a powder outlet; 6. a vent assembly; 7. a drive assembly; 8. a fluidizing gas chamber; 9. a gas collection cavity; 11. a first end cap; 12. a powder storage section; 13. a second end cap; 21. a filter plate; 31. a fixing member; 41. a first fluidizing chamber; 42. a second fluidization chamber; 421. a primary hollow rod; 422. a secondary hollow rod; 423. a tertiary hollow bar; 61. an annular groove; 62. a first air hole; 63. a second air hole; 71. a push-pull rod; 72. a push-pull seat; 73. a drive member; 81. a fluidization air connection nozzle.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be 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, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.
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 application, "plurality" or "a plurality" means two or more unless specifically limited otherwise.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure to be understood and read by those skilled in the art, and are not used for limiting the practical limitations of the present disclosure, so they do not have the essential technical meaning, and any modifications of the structures, changes of the ratio relationships, or adjustments of the sizes, should still fall within the scope of the technical disclosure of the present disclosure without affecting the function and the achievable purpose of the present disclosure.
Embodiments of the present invention are written in a progressive manner.
Referring to fig. 1 to 4, an embodiment of the present invention provides a powdered fuel supply apparatus, including: the device comprises a shell 1, wherein a first end cover is arranged at the front end of the shell 1; the powder storage section 12 is formed among the piston 2, the first end cover and the shell 1 and used for containing powder fuel, a filter plate 21 used for filtering the powder fuel is arranged on the piston 2, the rear end of the filter plate 21 is provided with a fluidization section 4 communicated with the powder storage section 12, and one end of the fluidization section 4, which is far away from the filter plate 21, is provided with a powder outlet 5; an air hole assembly 6 communicated with a fluidizing air source is arranged at one end of the piston 2 close to the powder storage section 12; and a driving assembly 7 for driving the piston 2 to move along the axial direction of the shell 1.
In the prior art, the powder fuel in the cylinder is often pushed by the piston, the piston is powered by pneumatics or a motor and the like, but because of the action of friction force between the powder fuel and the inner wall of the cylinder, the piston is easy to generate a blocking phenomenon in the process of pushing the powder fuel, and the uniform powder pushing speed is difficult to ensure.
The invention provides a powder fuel supply device, which comprises a shell 1, a piston 2, a fluidizing section 4 and an air hole assembly 6, wherein a first end cover is arranged at the front end of the shell 1, the piston 2 is arranged in the shell 1, the piston 2 is connected with the shell 1 in a sealing and sliding manner, a powder storage section 12 for containing powder fuel is formed among the shell 1, the piston 2 and the first end cover, a filter plate 21 is arranged on the piston 2, the powder fuel is filtered through the filter plate 21, the fluidizing section 4 is arranged at the rear end of the filter plate 21, a powder outlet 5 is arranged at one end, far away from the filter plate 21, of the fluidizing section 4, the air hole assembly 6 is arranged at one end, close to the powder storage section 12, of the piston 2, the air hole assembly 6 is communicated with a fluidizing gas source, fluidizing gas in the fluidizing gas source is blown into the powder storage section 12 through the air hole assembly 6 to blow fuel powder columns to enable the powder fuel to be powder fuel, the powder fuel to move to the fluidizing section 4 through the filter plate 21, and the powder fuel in the fluidizing section 4 is supplied through the powder outlet 5.
Secondly, often push away the powder fuel and remove in casing 1 through pushing away piston 2 among the prior art, on the one hand, the coefficient of friction between powder fuel and the inner wall of casing 1 is great, easily produces the phenomenon of card pause when pushing away powder fuel, and on the other hand, because powder fuel is at the in-process of supplying, powder fuel can the loss appear, and the frictional force between powder fuel and the inner wall of casing 1 can reduce gradually, so, hardly guarantees even push rod speed. The fluidizing section 4 is connected to the piston 2, and the piston 2 is driven by the driving assembly 7 to move along the axial direction of the housing 1, so that the friction force between the piston 2 and the inner wall of the housing 1 is kept in a constant state, and does not change greatly along with the reduction of the amount of the pulverized fuel, thereby realizing the continuous and stable fluidization and supply of the pulverized fuel.
Compared with the prior art, the powder fuel supply device in the embodiment of the invention has simple structure and can realize continuous and stable fluidization and supply of the powder fuel.
In the above structure, the housing in the embodiment of the present invention is embodied as the hollow cylindrical case 1.
Further, the pulverized fuel contained in the powder storage section 12 in the embodiment of the present invention may be made of high-energy solid powder (aluminum, magnesium, boron, carbon, etc.) by an existing process. In the embodiment of the invention, the high-energy solid powder is compacted and is placed in the powder storage section 12 to obtain the fuel powder column, and the fuel powder column in the embodiment of the invention has certain tightness.
Further, the first end cover and the housing 1 in the embodiment of the present invention are preferably detachably connected, which is more favorable for filling the powder storage section 12 with the fuel powder column.
Further, the piston 2 in the embodiment of the present invention is embodied as a ring structure, and preferably, the piston 2 in the embodiment of the present invention is detachably connected to the filter plate 21, so that the filter plate 21 can be replaced during use, and preferably, the filter plate 21 in the embodiment of the present invention is connected to the piston 2 through a screw thread.
Furthermore, a sealing member is arranged between the piston 2 and the inner wall of the housing in the embodiment of the invention.
Furthermore, the pulverized fuel supply apparatus in the embodiment of the present invention further includes a mounting seat 3, wherein the mounting seat 3 is provided with a limiting groove adapted to the outer contour of the housing 1, and the housing 1 is fixed on the mounting seat 3 by a fixing member 31.
Further, the fluidizing section 4 in the embodiment of the present invention includes a first fluidizing chamber 41 and a second fluidizing chamber 42, wherein a front end of the first fluidizing chamber 41 is communicated with the powder storage section 12, fluidizing gas enters the powder storage section 12 through the gas hole assembly 6, purging and disturbing are reduced on the surface of the fuel powder column, preliminary fluidization is performed between the powder storage section 12 and the powder fuel, the piston 2 and the fluidizing section 4 are pushed to move towards one end of the powder fuel under the action of the driving assembly 7, the mixed powder fuel and fluidizing gas enter the first fluidizing chamber 41 through the filter plate 21 for further fluidization, an inner cavity of the first fluidizing chamber 41 in the embodiment of the present invention is tapered, the first fluidizing chamber 41 is tapered towards one end far away from the powder storage section 12, the diameter of the first fluidizing chamber 41 is gradually reduced from front to back, so that the powder fuel can flow out from the first fluidizing chamber 41, the second fluidizing chamber 42 is specifically an axially retractable hollow cavity, the front end of the hollow cavity is communicated with the first fluidizing chamber 41, a rear end of the hollow cavity is communicated with the housing 1, and the hollow cavity is disposed at the rear end of the housing 5. The pulverized fuel is fluidized and then enters the ramjet through the powder outlet 5 after being fluidized by the first fluidizing chamber 41 and the second fluidizing chamber 42.
Further, the axial expansion and contraction of the second fluidizing chamber 42 in the present embodiment is realized by the nested multistage hollow rods, the number of which is set according to the length of the fuel column.
As a specific implementation manner, the second fluidizing chamber 42 in the embodiment of the present invention includes a primary hollow rod 421, a secondary hollow rod 422, and a tertiary hollow rod 423, wherein a front end of the primary hollow rod 421 communicates with the first fluidizing chamber 41, the secondary hollow rod 422 is coaxially sleeved on a rear end of the primary hollow rod 421, the tertiary hollow rod 423 is coaxially sleeved on a rear end of the secondary hollow rod 422, a rear end of the tertiary hollow rod 423 is fixed to the housing 1, the powder outlet 5 is disposed on the tertiary hollow rod 423, and is fixed to the housing 1 through the tertiary hollow rod 423, so that the position of the powder outlet 5 is fixed, the powder outlet 5 is conveniently connected to the ramjet engine, and the second fluidizing chamber 42 is axially retractable through the coaxially sleeved primary hollow rod 421, secondary hollow rod 422, and tertiary hollow rod 423.
In the above structure, as a more preferable embodiment, the aperture of the primary hollow shaft 421 in the embodiment of the present invention is larger than the aperture of the secondary hollow shaft 422, the secondary hollow shaft 422 is sleeved in the primary hollow shaft 421, the aperture of the secondary hollow shaft 422 is larger than the aperture of the tertiary hollow shaft 423, and the tertiary hollow shaft 423 is sleeved in the secondary hollow shaft 422.
Furthermore, in the embodiment of the present invention, the junction between the primary hollow rod 421 and the secondary hollow rod 422, and the junction between the secondary hollow rod 422 and the tertiary hollow rod 423 are provided with streamline transition surfaces. So that the mixture of fluidizing gas and powdered fuel can more smoothly pass through the second fluidizing chamber 42.
Furthermore, in the embodiment of the present invention, the connection between the primary hollow rod 421 and the secondary hollow rod 422, and the connection between the secondary hollow rod 422 and the tertiary hollow rod 423 are provided with sealing members, so that the mixture of the fluidizing gas and the powdered fuel in the second fluidizing chamber 42 does not leak.
Furthermore, as a more preferable embodiment, the housing 1 in the embodiment of the present invention is provided with a second end cap 13 at the rear end, the second end cap 13 is provided with an outlet through which the rear end of the second fluidizing chamber 42 passes, a sealed fluidizing air chamber is formed among the second end cap 13, the piston 2, the fluidizing section 4 and the housing 1, an air flow passage communicating the fluidizing air chamber and the air hole assembly 6 is provided on the piston 2, the fluidizing air connector 81 is used for connecting the fluidizing air chamber and the fluidizing air source, and the fluidizing air enters the powder storage section 12 through the fluidizing air connector 81, the fluidizing air chamber, the air flow passage and the air hole assembly 6.
Further, the second end cap 13 and the housing 1 in the embodiment of the present invention are detachably connected.
Further, the fluidizing gas nozzle 81 in the embodiment of the present invention is connected to a fluidizing gas source (not shown) through a rubber hose (not shown). Further, the fluidizing gas source in the embodiment of the present invention is specifically a control gas cylinder, and the control gas cylinder controls the flow rate of the fluidizing gas entering the fluidizing gas chamber 8 through the rubber tube and the fluidizing gas connector 81, so that the gas pressure in the fluidizing gas chamber 8 is increased, and the gas enters the gas hole assembly 6 to blow the fuel pillars together, so that the fuel pillars become the powdered fuel, and the powdered fuel is promoted to flow into the first fluidizing chamber 41.
Further, the fluidizing gas in the embodiment of the present invention may be any of combustion inert gases such as nitrogen and argon, and may be any of combustible gases such as methane and ethylene.
In the above structure, as a more preferable implementation manner, the gas flow channel in the embodiment of the present invention includes a gas collecting cavity 9, a first channel and a second channel, wherein the gas collecting cavity 9 is disposed outside the first fluidizing chamber 41, the first channel is used for communicating the gas collecting cavity 9 and the fluidizing gas chamber 8, the second channel is used for communicating the gas collecting cavity 9 and the gas hole assembly 6, and the gas collecting cavity 9 and the second channel are disposed, so that the pressure of the fluidizing gas entering the gas hole assembly 6 through the second channel is more balanced.
Specifically, the first fluidizing chamber 41 and the gas collecting chamber 9 in the embodiment of the present invention are non-communicating chambers provided on the piston 2.
In the above structure, as a more preferable embodiment, the air hole assembly 6 in the embodiment of the present invention further includes an annular groove 61 disposed on the front end surface of the piston 2, the annular groove 61 is provided with first air holes 62 communicated with the air collecting chamber 9, the first air holes 62 are provided in multiple groups, the first air holes 62 are uniformly disposed in the annular groove 61 around the circumference of the piston 2, and the high-pressure fluidizing mixed gas in the air collecting chamber 9 purges and disturbs the powder column through the first air holes 62 to form the fluidizing chamber. Furthermore, the first air holes 62 in the embodiment of the present invention are disposed on the edge of the piston 2 close to the inner wall of the housing and distributed in an annular array, so as to prevent the piston 2 from moving due to powder accumulation on the inner wall of the housing.
In the above structure, as a more preferable implementation manner, the general air hole assembly 6 of the embodiment of the present invention further includes a second air hole 63, the second air hole 63 is disposed on the inner wall of the piston 2, an air inlet end of the second air hole 63 is communicated with the air collecting chamber 9, an air outlet end of the second air hole 63 is disposed at the front end of the filter plate 21, and the second air hole 63 is obliquely disposed to purge the filter plate 21, so as to prevent the filter plate 21 from being clogged due to deposition of fuel powder on the filter plate 21.
Further, as a more preferred embodiment, the driving assembly 7 in the embodiment of the present invention includes a push-pull rod 71, push-pull seats 72 and a linear stepping motor, wherein the push-pull rod 71 is connected to the piston 2, at least two groups of the push-pull rods 71 are provided, the push-pull rods 71 are uniformly arranged around the axis of the piston 2, the end of the push-pull rod 71 is connected to the push-pull seats 72, and the driving member 73 is fixedly connected to the push-pull seats 72 to drive the push-pull seats 72 to reciprocate along the axial direction of the housing, so as to drive the groups of the push-pull rods 71 to be linked.
Further, the driving member 73 in the embodiment of the present invention is embodied as any one of a pneumatic drive, a hydraulic drive, or a motor drive.
More specifically, the driving member 73 in the embodiment of the present invention is embodied as a linear driving motor.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A pulverized fuel supply apparatus, characterized by comprising:
the device comprises a shell (1), wherein a first end cover (11) is arranged at the front end of the shell (1);
the powder storage section (12) is formed among the piston (2), the first end cover (11) and the shell (1) and is used for containing powder fuel, a filter plate (21) used for filtering the powder fuel is arranged on the piston (2), a fluidization section (4) communicated with the powder storage section (12) is arranged at the rear end of the filter plate (21), and a powder outlet (5) is arranged at one end, far away from the filter plate (21), of the fluidization section (4);
an air hole assembly (6) communicated with a fluidizing air source is arranged at one end of the piston (2) close to the powder storage section (12);
and the driving component (7) drives the piston (2) to move along the axial direction of the shell (1).
2. The pulverized fuel supply apparatus as claimed in claim 1,
the fluidisation section (4) comprising:
a first fluidizing chamber (41) and a second fluidizing chamber (42);
wherein,
the front end of the first fluidizing chamber (41) is communicated with the powder storage section (12), and the inner cavity of the first fluidizing chamber (41) is conical and is gradually reduced towards one end of the powder outlet (5);
the second fluidization chamber (42) is specifically an axially telescopic hollow cavity, the front end of the hollow cavity is communicated with the first fluidization chamber (41), and the rear end of the hollow cavity is fixed with the shell (1).
3. The pulverized fuel supply apparatus as claimed in claim 2,
the second fluidization chamber (42) comprising:
a primary hollow rod (421) connected to the piston (2) and communicating with the first chamber (41);
the secondary hollow rod (422) is sleeved at the rear end of the primary hollow rod (421);
the three-stage hollow rod (423) is sleeved at the rear end of the two-stage hollow rod (422), and one end, far away from the piston (2), of the three-stage hollow rod (423) is fixed with the shell (1).
4. The pulverized fuel supply apparatus as claimed in claim 3,
the aperture of the primary hollow rod (421) is larger than that of the secondary hollow rod (422), and the aperture of the secondary hollow rod (422) is larger than that of the tertiary hollow rod (423).
5. The pulverized fuel supply apparatus as claimed in claim 4,
the junction of the primary hollow rod (421) and the secondary hollow rod (422), and the junction of the secondary hollow rod (422) and the tertiary hollow rod (423) are provided with streamline transition surfaces.
6. The pulverized fuel supply apparatus as claimed in claim 2,
a second end cover (13) is arranged at the rear end of the shell (1), an outlet through which the rear end of the second fluidizing chamber (42) passes is formed in the second end cover (13), and a sealed fluidizing air chamber (8) is formed among the second end cover (13), the piston (2), the fluidizing section (4) and the shell (1);
a gas flow passage for communicating the fluidizing gas chamber (8) and the gas hole assembly (6);
a fluidizing gas connection (81) for connecting the fluidizing gas chamber (8) and the fluidizing gas source.
7. The pulverized fuel supply apparatus as claimed in claim 6,
the airflow passage includes:
a gas collection chamber (9) arranged outside the first fluidization chamber (41);
a first channel communicating the gas collection chamber (9) with the fluidizing gas chamber (8);
and the second channel is communicated with the gas collection cavity (9) and the gas hole assembly (6).
8. The pulverized fuel supply apparatus as claimed in claim 7,
the vent assembly (6) comprising:
an annular groove (61) provided on a front end surface of the piston (2);
the first air holes (62) are arranged in the annular groove (61) and communicated with the air collecting cavity (9), multiple groups of the first air holes (62) are arranged, and the first air holes (62) are uniformly arranged in the annular groove (61).
9. The pulverized fuel supply apparatus as claimed in claim 8,
the vent assembly (6), further comprising:
a second air hole (63) provided on an inner wall of the piston (2);
the air inlet of the second air hole (63) is communicated with the air collecting cavity (9), the air outlet of the second air hole (63) is formed in the front end of the filter plate (21), and the second air hole (63) is obliquely arranged and used for purging the filter plate (21).
10. The pulverized fuel supply apparatus as claimed in any one of claims 1 to 9,
the drive assembly (7) comprising:
the push-pull rods (71) are connected with the piston (2), at least two groups of push-pull rods (71) are arranged, and the tail ends of the push-pull rods (71) are connected with the push-pull seat (72);
and the driving piece (73) is fixedly connected with the push-pull seat (72) and drives the push-pull seat (72) to reciprocate along the axial direction of the shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210718895.7A CN115264520A (en) | 2022-06-23 | 2022-06-23 | Powder fuel supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210718895.7A CN115264520A (en) | 2022-06-23 | 2022-06-23 | Powder fuel supply device |
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| Publication Number | Publication Date |
|---|---|
| CN115264520A true CN115264520A (en) | 2022-11-01 |
Family
ID=83761645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210718895.7A Pending CN115264520A (en) | 2022-06-23 | 2022-06-23 | Powder fuel supply device |
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| Country | Link |
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| CN (1) | CN115264520A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115571638A (en) * | 2022-11-04 | 2023-01-06 | 北京理工大学 | Stable powder supply method and device suitable for variable cross-section powder storage section |
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| GB1200271A (en) * | 1967-02-23 | 1970-07-29 | Boelkow Gmbh | Device for feeding an igniting agent for combustion chambers of liquid fuel rocket propulsion units |
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| CN102997268A (en) * | 2012-10-24 | 2013-03-27 | 西北工业大学 | Anti-tempering powder supply device |
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| CN115571638A (en) * | 2022-11-04 | 2023-01-06 | 北京理工大学 | Stable powder supply method and device suitable for variable cross-section powder storage section |
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