CN115218188A - Streamline fuel valve plate of gas generator - Google Patents

Abstract

The invention discloses a streamline fuel valve plate of a fuel gas generator, which comprises a fuel flow distribution plate, wherein the fuel flow distribution plate comprises a plurality of single plates arranged side by side, one side of each single plate is provided with a multi-stage pressure reduction channel, the multi-stage pressure reduction channel is a bent channel, the pore diameter of the multi-stage pressure reduction channel from bottom to top is gradually increased, a cylinder is fixedly connected above the fuel flow distribution plate, the side wall of the cylinder is uniformly provided with an airflow channel, the airflow channel is a conical hole, the multi-stage pressure reduction channel is arranged on the fuel flow distribution plate, the multi-stage pressure reduction channel is a bent channel, the pore diameter of the multi-stage pressure reduction channel from bottom to top is gradually increased, namely, in the process that fuel runs from bottom to top, the pressure of each bend inlet does not exceed the flash evaporation point of a medium through the pressure reduction of each stage, the fluid flow rate is reduced, the noise source is reduced, and the fuel after the pressure reduction and the speed reduction can ensure the combustion stability in the cylinder.

Description

A streamlined fuel distribution plate for a gas generator

technical field

The invention relates to the technical field of fuel distribution plates, in particular to a streamlined fuel distribution plate of a gas generator.

Background technique

The fuel pump used in the underwater power system needs to be equipped with a fuel pump distribution mechanism in order to realize the pressurization of the fuel during the pump operation. The main function of the fuel pump distribution mechanism is to make the high-pressure fuel communicate with the fuel outlet when the plunger discharges oil during the reciprocating motion of the plunger, and communicate with the fuel inlet during the plunger oil absorption. Therefore, the quality of the fuel pump distribution mechanism will determine the overall performance and volumetric efficiency of the pump. The conventional fuel pump adopts the structure in which the eccentric small shaft on the main shaft drives the distribution plate to rotate to realize the pump distribution. The distribution plate (distribution valve) used in this distribution method is mainly the structure of the distribution ring plus the sliding bearing or the needle roller bearing. During work, the distribution plate not only revolves around the center of the main shaft, but also rotates around its own center of rotation, which realizes the communication function between the fuel and the high and low pressure chambers of the fuel during the pressurization or suction process, and also realizes the working process of the pump. The partition function of medium fuel high and low pressure cavity.

The design of high-flow gas generators used in ejector systems requires smooth combustion to avoid large airflow pulsations. However, the fuel liquid of the split plate of the gas generator is the hole feed, so the flow rate and the feed pressure are relatively large, which will cause the newly fed fuel liquid during the combustion process to affect the smooth combustion.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a streamlined fuel distribution plate of a gas generator, which solves the problem that the fuel liquid of the distribution plate of the gas generator in the prior art is the hole feed, so the flow rate and the feed pressure are relatively large, which will lead to combustion The newly fed fuel liquid in the process affects the smooth combustion.

In order to achieve the above purpose, the present invention provides the following technical solutions: a streamlined fuel distribution plate for a gas generator, including a fuel distribution plate, the fuel distribution plate includes a plurality of single-piece plates arranged side by side, and one side of the single-piece plate is A multi-stage depressurization channel is provided, the multi-stage depressurization channel is a bent channel, and the aperture of the multi-stage depressurization channel gradually increases from bottom to top.

Preferably, the multi-stage depressurization channel includes a narrow feed channel, a primary widening channel and a secondary widening channel arranged in sequence from bottom to top.

Preferably, a locking ring is sleeved on the outside of the fuel distribution plate, and the locking ring presses and fixes a plurality of single-piece plates.

Preferably, a cylinder body is fixed above the fuel distribution plate, air passages are uniformly opened on the side wall of the cylinder body, and nozzle installation holes are uniformly opened on the upper surface of the cylinder body.

Preferably, the airflow channel includes a narrow inlet close to the outer side wall of the cylinder and a wide outlet close to the inner side wall of the cylinder, and the airflow channel is a conical hole.

Compared with the prior art, the beneficial effects of the present invention are:

1. A multi-stage depressurization channel is set on the refueling diverter plate of the present invention, the stage depressurization channel is a bent channel, and the aperture of the multi-stage depressurization channel gradually increases from bottom to top, that is, in the process of fuel running from bottom to top After each stage of depressurization, the inlet pressure of each corner does not exceed the flash point of the medium, reducing the fluid flow rate and reducing the source of noise. The fuel after depressurization and deceleration can ensure the combustion stability inside the cylinder. ;

2. The airflow channel of the present invention is a conical hole, that is, the airflow is ejected from the narrow inlet to the wide outlet. During this process, the air pressure is also reduced, which reduces the gas eddy current and further ensures smooth combustion.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention. In the attached image:

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the structural representation of the present invention without installing the locking ring;

Fig. 3 is the perspective view of the fuel distribution plate of the present invention;

Fig. 4 is the structural schematic diagram of the monomer plate of the present invention;

FIG. 5 is a schematic top view of the structure of the airflow channel of the present invention.

In the figure: 1. Locking ring; 2. Cylinder body; 3. Nozzle mounting hole; 4. Fuel distribution plate; 41. Monomer plate; 42. Multi-stage depressurization channel; Wide passage; 423, secondary widening passage; 5, airflow passage; 51, narrow inlet; 52, wide outlet.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiment of this invention, and it is not an embodiment of all. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to FIGS. 2 , 3 and 4 , in the embodiment of the present invention, it is a streamlined fuel distribution plate of a gas generator, including a fuel distribution plate 4 , and the fuel distribution plate 4 includes a plurality of single-piece plates 41 arranged side by side , one side of these single plates 41 is provided with a multi-stage depressurization channel 42, the multi-stage depressurization channel 42 is a bent channel, and the aperture of the multi-stage depressurization channel 42 gradually increases from bottom to top, that is, when the fuel flows from the bottom In the process of upward running, after each stage of depressurization, the inlet pressure of each corner does not exceed the flash point of the medium, reducing the fluid flow rate, avoiding the occurrence of flash evaporation and cavitation, and reducing the source of noise at the same time. Among them, the multi-stage depressurization channel 42 includes a narrow feed channel 421, a primary widening channel 422 and a secondary widening channel 423, which are sequentially arranged from bottom to top, that is, after two pressure reductions;

As shown in FIGS. 1 and 2 , in order to ensure that the individual plates 41 can be locked to each other, a locking ring 1 is sleeved on the outside of the fuel distribution plate 4 here, and the locking ring 1 compresses the plurality of individual plates 41 fixed, thereby ensuring the integrity of the fuel distribution plate 4;

1, 2 and 4, in order to ensure that the fuel and the air flow can be mixed, a cylinder 2 is fixed above the fuel distribution plate 4, and an air flow channel 5 is evenly opened on the side wall of the cylinder 2, that is, The airflow enters the inside of the cylinder body 2 through the outer side of the airflow channel 5 and mixes with the fuel. Since the fuel is depressurized by the multi-stage depressurization channel 42, it is possible to avoid unstable combustion. Further, the upper surface of the cylinder body 2 is evenly opened. There are nozzle mounting holes 3 for installing nozzles;

In the present embodiment, preferably, the airflow channel 5 includes a narrow inlet 51 close to the outer side wall of the cylinder 2 and a wide outlet 52 close to the inner side wall of the cylinder 2, and the airflow channel 5 is a conical hole, that is, the airflow from the narrow inlet 51 After reaching the wide outlet 52, it is ejected. During this process, the air pressure is also reduced, which reduces the gas vortex and further ensures smooth combustion.

The working principle of the present invention is: when the device is used, the liquid fuel reaches the primary widening channel 422 and the secondary widening channel 423 in turn through the narrow feed channel 421, and then enters the interior of the cylinder 2, and the multi-stage depressurization channel 42 It is a curved channel, and the aperture of the multi-stage depressurization channel 42 gradually increases from bottom to top, so in the process of fuel from running, after each stage of depressurization, the inlet pressure of each corner does not exceed the flashing of the medium. At the same time, the flow is ejected from the narrow inlet 51 to the wide outlet 52. During this process, the air pressure is also reduced, reducing the gas eddy current. , and then the depressurized fuel and the depressurized airflow can be mixed and burned inside the cylinder 2 to completely ensure stable combustion.

Finally, it should be noted that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the The technical solutions described in the foregoing embodiments may be modified, or some technical features thereof may be equivalently replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (7)

1. A streamlined fuel distribution plate for a gas generator, characterized in that it comprises a fuel distribution plate (4), and the fuel distribution plate (4) comprises a plurality of single-piece plates (41) arranged side by side, the single-piece plates One side of (41) is provided with a multi-stage depressurization channel (42), the multi-stage depressurization channel (42) is a bent channel, and the aperture of the multi-stage depressurization channel (42) gradually increases from bottom to top. 2 . The streamlined fuel distribution plate of a gas generator according to claim 1 , wherein the multi-stage depressurization passage ( 42 ) comprises narrow feed passages ( 421 ) arranged sequentially from bottom to Wide channel (422) and secondary widening channel (423). 3. A gas generator streamlined fuel distribution plate according to claim 2, characterized in that: a locking ring (1) is sleeved on the outside of the fuel distribution plate (4), and the locking ring (1) will be more Each single plate (41) is pressed and fixed. 4. The streamlined fuel distribution plate of a gas generator according to claim 1, characterized in that: a cylinder (2) is fixed above the fuel distribution plate (4), and the cylinder (2) is Air flow channels (5) are evenly opened on the side walls. 5 . The streamlined fuel distribution plate of a gas generator according to claim 4 , wherein nozzle mounting holes ( 3 ) are uniformly opened on the upper surface of the cylinder body ( 2 ). 6 . 6. A gas generator streamlined fuel distribution plate according to claim 4 or 5, characterized in that: the airflow channel (5) comprises a narrow inlet (51) close to the outer wall of the cylinder (2) and a narrow inlet (51) close to the cylinder (2) Wide outlet (52) on the inner side wall of the body (2). 7 . The streamlined fuel distribution plate of a gas generator according to claim 6 , wherein the gas flow passage ( 5 ) is a conical hole. 8 .

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