Supersonic speed oil gun with subsonic speed-venturi-stay tube structure

Abstract

The invention relates to an oil gun combustion device, in particular to a supersonic oil gun with a subsonic-venturi-stay tube structure, first-stage subsonic atomization mixing is carried out before fuel oil enters a rear-stage atomization flow channel, the whole device adopts compressed air to carry out two-stage atomization, the fuel oil atomization quality is greatly improved, and poor-quality oil can be combusted.

Description

Technical Field

[0001] This invention relates to an oil combustion control device, and particularly to a supersonic oil gun with a subsonic-Vin-La tube structure that is widely used in the field of various boiler oil burners. Background Technology

[0002] Currently, in various oil burners of various boilers, a very important process in the ignition of fuel oil is to first complete its own atomization. The atomization process of the oil gun adopts a technical structure that is usually referred to in the industry as an atomizing plate.

[0003] This invention is a technical upgrade based on the "A Supersonic Oil Gun with a Wen-Pull Tube Structure" previously applied for by the inventor. Summary of the Invention

[0004] The purpose of this invention is to provide a supersonic fuel gun with a subsonic-Venturi-Laval tube structure for various fuel burners. The core of the supersonic fuel gun with a subsonic-Venturi-Laval tube structure is a composite structure of a Venturi tube and a Laval tube with pre-installed subsonic pre-atomization technology, and air is used as the atomization medium to achieve combined subsonic and supersonic atomization of fuel.

[0005] To achieve the above objectives, the present invention employs a technique based on the original supersonic fuel gun structure with a tube-drawing structure, by setting a subsonic atomizing mixing chamber inside the fuel gun core, that is, by pre-feeding a portion of compressed air to perform primary atomization of the fuel.

[0006] In a preferred or optional embodiment, the supersonic fuel gun with a subsonic-Vin-La tube structure can at least produce the following technical effects:

[0007] 1. Before the fuel is fully atomized, it undergoes a preliminary atomization process to forcibly reduce the fuel flow density and form a fuel-air mixture.

[0008] 2. The flow entering the downstream Ven-La pipe is a mixture of oil and gas, instead of a simple oil flow. This significantly reduces the surface tension of the fuel, further improving the fuel atomization level.

[0009] Other features and advantages of the invention will become clearer from the following detailed description of an exemplary embodiment of a subsonic-Vin-La tube structure supersonic oil gun with reference to the accompanying drawings. Attached Figure Description

[0010] The accompanying drawings, which form part of this specification, illustrate embodiments of the invention and, together with the specification, serve to explain the principles of the invention.

[0011] in:

[0012] Appendix Figure 1This is a front sectional view of one embodiment of a supersonic oil gun with a subsonic-Vin-La tube structure. Detailed Implementation

[0013] Exemplary embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative positions, numerical expressions, and values ​​of the components and steps described in the embodiments do not limit the scope of the present invention.

[0014] At the same time, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale.

[0015] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0016] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0017] In all embodiments shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0018] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0019] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0020] See attached document Figure 1 As shown, a supersonic oil gun with a subsonic-Vin-La tube structure includes an oil gun head cover 1, an oil gun core 2, and a subsonic atomizing mixing chamber 8.

[0021] Furthermore, the internal flow channel of the oil gun head sleeve 1 is a Lagrange tube structure, which includes a converging orifice, a throat, and a flaring orifice.

[0022] Furthermore, an oil nozzle 3 is arranged at the inlet of the oil gun core 2, and an oil inlet channel 4 is provided in the oil nozzle 3.

[0023] Furthermore, several subsonic atomizing holes 5 are opened on the body of the oil gun core 2.

[0024] Furthermore, the subsonic atomizing holes 5 are evenly arranged circumferentially on the oil gun core 2, and their jet centerline intersects with the fuel flow line.

[0025] The working principle is as follows:

[0026] Compressed air is first injected into the subsonic atomizing mixing chamber 8 of the oil gun core 2 through the subsonic atomizing hole 5.

[0027] At the same time, fuel is also introduced into the subsonic atomizing mixing chamber 8 of the fuel gun core 2 through the fuel inlet duct 4.

[0028] When the two phases meet, the oil flow velocity is much lower than the air flow velocity, resulting in a high-speed difference and violent collision between the two phases. The fuel is broken up, achieving primary atomization of the fuel and forming an oil-gas mixture.

[0029] The subsonic atomizing orifice 5 is a simple straight orifice, not a Laval nozzle structure, so it can only achieve subsonic atomization and cannot reach supersonic speeds, but the effect is still very satisfactory.

[0030] After primary atomization, the oil-air mixture flows together to the release hole 6 of the oil gun core 2 and expands at high speed before being ejected. At the outlet of the release hole 6, it encounters compressed air entering through the air intake duct 7 again and is atomized again by high-speed impact. The oil-air mixture, after being broken up again, continues to move forward into the supersonic section, completing secondary atomization. The secondary atomization structure is a Venturi tube supersonic structure. The working principle of the secondary atomization structure will not be repeated in this invention.

[0031] The advantages of doing this are:

[0032] This invention is particularly useful in situations where the oil quality is very poor. The outstanding technical feature of this invention is the use of two-stage compressed air atomization, with one internal mixing and one external mixing, which is very ingenious.

[0033] It should be noted that, in addition to achieving efficient atomization of fuel, this invention can also achieve efficient atomization of denitrification agents (ammonia or urea solution) to form a denitrification spray gun; it can also perform efficient atomization and drying of various industrial waste liquids to remove harmful components to form a waste liquid spray gun.

[0034] This embodiment only provides one solution. Other similar technical modifications inspired by the essence of this technology all fall within the protection scope of this invention.

[0035] The present invention has now been described in detail. To avoid obscuring the concept of the invention, some details known in the art have not been described. Those skilled in the art will fully understand how to implement the technical solutions disclosed herein based on the above description.

[0036] Although some specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0037] Those skilled in the art will understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

[0038] As a preferred option Figure 1 The illustrated embodiment is merely one implementation of the supersonic oil gun with the subsonic-Vin-La tube structure described above. Any similar technical modifications inspired by the essence of this technology fall within the protection scope of this invention.

Claims

1. A supersonic fuel gun with a subsonic-Ven-La tube structure, comprising a fuel gun head, a fuel gun core, and a subsonic atomizing mixing chamber, characterized in that, A subsonic atomizing mixing chamber is provided in the oil gun core.

2. The supersonic fuel gun with a subsonic-Ven-La tube structure according to claim 1, characterized in that, The subsonic atomizing mixing chamber includes an oil gun core body, a subsonic atomizing hole, an oil nozzle, an oil inlet channel, and a release hole.

3. A supersonic fuel gun with a subsonic-Ven-La tube structure according to any one of claims 1 and 2, characterized in that... Includes the items listed in claims 1-2.

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