Gas vortex pilot gas heater
By designing a vortex shell and vortex worm gear structure in the gas vortex tube, two-stage gas heating and cold gas recirculation are achieved, solving the problems of insufficient separation and poor heating effect of the vortex tube, and improving the safety and reliability of the gas pressure control system.
Patent Information
- Application Number
- CN202511555494.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-29
- Publication Date
- 2026-01-23
AI Technical Summary
Existing vortex tubes in gas pressure control systems suffer from problems such as insufficient separation, poor cold gas return, and ineffective heating. In particular, they can easily cause overpressure and safety hazards during the pressure reduction process of high-pressure differential pressure regulating skids.
Employing a vortex shell and vortex worm gear structure, the gas is accelerated by the air intake injection component, forming a vortex flow channel and a vortex worm gear through hole, achieving two-stage heating of the gas. The cold gas recirculation is regulated by the control valve core to avoid cold gas stagnation, thereby improving heating effect and safety.
This increases the temperature difference between hot and cold airflows, improves the heating effect, ensures smooth cold air return, avoids overpressure, and enhances the safety and reliability of the system.
Smart Images
Figure CN121383441A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of gas pressure control system, and particularly relates to a gas vortex pilot gas heater. BACKGROUND
[0002] In the gas pressure control system, the temperature will drop in the pressure reduction process, especially the temperature drop caused by the pressure reduction of the pressure regulating pry with high pressure difference will make the temperature of the gas after the valve lower than 0 DEG C, thereby causing many influences, especially the ice blockage problem directly causes the valve core of the pressure regulator unable to work.
[0003] In view of the low temperature problem, the gas is usually heated by active heat exchange or heating. The active heat exchange refers to heating the gas by using an external heat source, such as hot water medium, steam medium, hot oil medium, etc. in cooperation with a heat exchanger, and the heating usually adopts an electric heating mode.
[0004] In addition to the above active heating or heat exchange, there is also a passive heater, such as a vortex tube heater, which works based on the gas vortex self-heating principle and heats the pilot gas to ensure that the pilot valve can control the start of the pressure regulator at any time, and the pilot gas will enter the valve core of the pressure regulator to exchange heat inside. The principle of the vortex tube is that the gas is separated into two vortexes with different angular velocities of the outside and the inside by a special structure, and the angular momentum conservation principle is used to heat the outside vortex and cool the inside vortex, and then the hot vortex gas is used to heat the pilot valve or the commander.
[0005] However, the current application of the vortex tube is still at a relatively original level, and completely relies on the most basic vortex tube structure to separate the cold and hot vortexes, which has the following obvious shortcomings: 1. The existing vortex tube separates the cold and hot vortexes by directly using the different angular velocities of the inside and outside vortexes after the vortex is generated by gas injection, without sufficient acceleration, which will cause insufficient separation due to insufficient initial energy, thereby the temperature difference obtained is limited.
[0006] 2. After the cold and hot vortexes are separated by the existing vortex tube, the hot gas is controlled to be output by the rear end valve core, and the cold gas is blocked to be returned, but there is no special pipeline for the cold gas to return, and the returned cold gas must pass through the positive vortex to be resisted, causing the return flow of the cold gas not smooth, thereby causing the cold gas to be retained at the outlet end and the pressure to rise, which is easy to cause overpressure and cause safety hazards.
[0007] 3. Existing vortex tubes separate hot and cold vortices, but only a small portion of the hot vortex is used to adjust the temperature of the output hot gas. The remaining large amount of cold gas is not properly handled and is usually directly discharged into the main gas pipeline. Although the gas source for the vortex tube is introduced from the main pipeline, the gas pressure has already decreased after the vortex is generated and is definitely lower than the main pipeline pressure. When the cold gas is directly discharged into the main pipeline, there is a pressure difference, which causes the cold gas to be discharged unevenly and may even result in back pressure. This causes poor vortex flow and ultimately leads to poor heating effect. Summary of the Invention
[0008] To solve at least one of the above technical problems, the present invention provides a gas vortex pilot gas heater.
[0009] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: This invention provides a gas vortex pilot gas heater, comprising a vortex housing, an air inlet injection component and a cold gas housing fixed at the first end of the vortex housing, the air inlet injection component being located on the side of the vortex housing and communicating with the interior of the vortex housing; a vortex worm gear is provided inside the vortex housing, the middle part of the vortex worm gear cooperating with the inner wall of the vortex housing to form a vortex flow channel; the first end of the vortex worm gear is in sealed contact with the cold gas housing, and a through hole is provided axially inside the vortex worm gear and communicating with the cold gas housing; a control valve housing is fixed at the second end of the vortex housing, a control valve core is provided inside the control valve housing, and a hot gas outlet is formed between the outer periphery of the control valve core and the inner wall of the second end of the vortex housing.
[0010] The beneficial effects of this invention are: By employing this invention, the gas is accelerated through the intake injection component and the vortex flow channel, increasing the initial kinetic energy of the gas and avoiding insufficient separation caused by insufficient initial kinetic energy. This also increases the temperature difference between the hot and cold airflows at the end. Through the vortex flow channel's cyclone throttling effect and the energy transfer between the inner and outer sides of the gas at the second end of the vortex shell, a two-stage heating of the outer hot airflow is achieved, improving the heating effect. Through the through-hole of the vortex worm, when the inner cold air flows to the second end of the vortex worm and encounters obstruction from the control valve core, it can be deflected back into the through-hole, thus avoiding the influence of the positive vortex. The cold air return is smooth, avoiding overpressure caused by cold air stagnation, resulting in high safety and reliability.
[0011] Based on the above technical solution, the present invention can be further improved as follows.
[0012] Furthermore, the vortex housing is provided with a vortex chamber, a spiral acceleration chamber, and a vortex separation chamber with progressively smaller diameters from the first end to the second end. The middle part of the vortex worm gear cooperates with the spiral acceleration chamber to form a vortex flow channel, and the air intake injection component is connected to the vortex chamber along the rotation direction of the vortex flow channel.
[0013] The gas is accelerated and injected into the vortex chamber along the tangential direction by the gas injection component, so that the gas generates an initial cyclone, and the kinetic energy loss of the gas entering the vortex flow channel is reduced; in addition, when the gas flows along the vortex chamber, the spiral acceleration chamber and the vortex separation chamber in turn, the rotation radius is reduced in turn, and the angular velocity is increased in turn, so that two acceleration stages are added to the cyclone, and the heating effect and the separation effect of the cold and hot gas flows are improved.
[0014] Further, the middle diameter of the vortex worm is greater than the diameters of the two ends, and the first end diameter of the vortex worm is greater than the second end diameter.
[0015] The cyclone is formed at the position of the first end of the vortex worm, and the kinetic energy loss is reduced; at the same time, the angular velocity difference between the inside and outside of the second end of the vortex worm is increased, and the separation effect and the heating effect of the outside hot gas flow are improved.
[0016] Further, the gas injection component comprises a gas inlet shell, a nozzle is arranged in the gas inlet shell, an inlet connector is fixed to the upper end of the gas inlet shell, the inlet connector is communicated with the nozzle, and the nozzle is communicated with the inside of the vortex shell.
[0017] The inlet connector can be used to connect the high-pressure gas pipeline before the external pressure regulator, and the installation is convenient; the spray group can inject the gas flow into the vortex shell, and the gas flow rate of the vortex shell is improved.
[0018] Further, a negative pressure cavity is arranged around the lower part of the nozzle in the gas inlet shell, the lower part of the negative pressure cavity is communicated with the lower end of the nozzle; and a cold gas guide is further arranged, one end of the cold gas guide is communicated with the cold gas shell, and the other end of the cold gas guide is communicated with the negative pressure cavity.
[0019] The cold gas in the cold gas chamber is guided out through the cold gas guide, and the cold gas is guided to the negative pressure cavity after heat exchange with the air; when the nozzle accelerates the gas flow, a negative pressure is formed around the lower end of the nozzle, so that the cold gas flows into the outlet gas flow of the nozzle under the action of the negative pressure and is brought into the vortex shell, and the secondary reflux treatment of the cold gas is realized, and the problem of poor flow caused by direct discharge of the cold gas and affecting the heating effect is avoided.
[0020] Further, the cold gas guide is a spiral coil pipe, and the spiral coil pipe is wound on the vortex shell; a cold gas channel is arranged in the side wall of the cold gas shell, one end of the cold gas channel is communicated with the inside of the cold gas shell, the other end of the cold gas channel extends to the inside of the first end side wall of the vortex shell, one end of the spiral coil pipe is fixed to the first end of the vortex shell and communicated with the cold gas channel, and the other end of the spiral coil pipe is fixed to the gas inlet shell and communicated with the negative pressure cavity.
[0021] The spiral coil pipe improves the heat exchange efficiency of the cold gas and the air, and facilitates the cold gas to absorb heat and restore to normal temperature.
[0022] Further, the control valve core is conical and the small end extends into the scroll housing, and the control valve core can move axially to adjust the gap between the outer periphery of the control valve core and the inner wall of the second end of the scroll housing.
[0023] The size of the hot gas outlet is adjusted to adjust the proportion of the separated release of the hot gas flow, thereby adjusting the output gas temperature, and the flexibility is good.
[0024] Further, the control valve housing is connected with a rotating and twisting part through internal threads, one end of the rotating and twisting part extends into the control valve housing and is fixedly connected with the control valve core.
[0025] The control valve core is driven to move axially, and the operation is convenient.
[0026] Further, the control valve housing is connected with a rotating and twisting part through internal threads, one end of the rotating and twisting part extends into the control valve housing and is fixedly connected with the control valve core.
[0027] The hot gas interface can be used to connect external pipelines, and the hot gas can be introduced out and used to heat the low-pressure gas mixture.
[0028] Further, the first end of the scroll worm is fixed with a step, and the cold gas housing is provided with a groove at the position of the scroll worm, the first end of the scroll worm extends into the groove, and the step is arranged around the groove and in sealing contact with the cold gas housing.
[0029] The sealing effect of the first end of the scroll worm and the cold gas housing is improved, and the initial gas flow and the cold gas leakage mixture are avoided. BRIEF DESCRIPTION OF DRAWINGS
[0030] Figure 1 It is an internal structure diagram of the present application.
[0031] Figure 2 It is a longitudinal section diagram of the present application.
[0032] Figure 3 It is a cross section diagram of the inlet injection part of the present application.
[0033] Figure 4 It is an external structure diagram of the present application.
[0034] In the drawings, the technical features represented by the reference signs are as follows: 1- scroll housing; 2- scroll worm; 21- step; 3- inlet injection part; 31- nozzle; 32- inlet connector; 33- negative pressure cavity; 4- cold gas housing; 41- cold gas passage; 5- control valve housing; 51- rotating and twisting part; 6- control valve core; 7- hot gas interface; 8- spiral coil. DETAILED DESCRIPTION
[0035] The principles and features of the present application are described below, and the examples are used to explain the present application, but not to limit the scope of the present application.
[0036] The present application refers to Figures 1-4 .
[0037] The present application provides a gas vortex pilot gas heater, comprising a vortex shell 1, a first end of the vortex shell 1 is fixed with an air inlet injection part 3 and a cold gas shell 4, the air inlet injection part 3 is located on the side of the vortex shell 1 and communicates with the inside of the vortex shell 1; a vortex worm 2 is arranged in the vortex shell 1, the middle part of the vortex worm 2 cooperates with the inner wall of the vortex shell 1 to form a vortex flow channel; the first end of the vortex worm 2 is in sealing contact with the cold gas shell 4, and the vortex worm 2 is provided with a through hole in the axial direction and communicates with the cold gas shell 4; a control valve core 6 is arranged in the control valve shell 5, and the outer periphery of the control valve core 6 and the inner wall of the second end of the vortex shell 1 form a hot gas outlet.
[0038] Principle: The air inlet injection part 3 can be used to connect the high-pressure gas pipeline before the external pressure regulator, and the high-pressure gas is injected into the vortex shell 1 through the air inlet injection part 3 to increase the flow rate. The first end of the vortex shell 1 is closed by the vortex worm 2 and the cold gas shell 4, so that the high-pressure gas can only pass through the vortex flow channel formed by the middle part of the vortex worm 2 and the inner wall of the vortex shell 1, so as to form a cyclone in the vortex flow channel and flow to the second end of the vortex shell 1. In this process, since the cross-sectional area of the vortex flow channel is much smaller than that of the internal cavity of the first end of the vortex shell 1, the vortex flow channel has a throttling effect on the gas, the flow rate of the gas is further increased, a certain energy is released, and the first-stage gas temperature rise is realized. After the gas leaves the vortex flow channel, it enters the area where the second end of the vortex worm 2 is located, and the gas keeps rotating flow along the second end of the vortex worm 2. The part of the gas in the cyclone (the inside gas) near the outer wall of the vortex worm 2 has a smaller rotation radius and thus obtains a higher angular velocity, while the outside gas has a larger rotation radius and a smaller angular velocity. Under the action of the viscosity of the gas itself, the inside gas drives the outside gas to speed up, thereby transferring energy to the outside gas, the temperature of the outside gas rises, and the temperature of the inside gas decreases, forming two gas streams of cold and hot distributed along the radial direction of the second end of the vortex worm 2, realizing the second-stage gas temperature rise. When the gas flow reaches the position of the control valve core 6, the hot gas stream near the outside is closer to the hot gas outlet of the second end of the vortex shell 1, so that the hot gas flows out from the hot gas outlet to the control valve shell 5, and the cold gas enters the through hole of the second end of the vortex worm 2 and flows back to the cold gas shell 4 along the through hole without any obstruction.
[0039] Preferably, the spiral flow channel is formed along the helical shape in the middle surface of the scroll worm 2, which is in contact with the inner wall of the scroll housing 1. The control valve housing 5 can be provided with a hot gas interface 7 for connecting the low pressure pipeline after the pressure regulator, for heating the low pressure gas mixture in the pipeline. The cold gas in the cold gas housing 4 can be sent to the air injection component 3 after heat exchange with the air through the pipeline, or connected to the supercharging pump and other equipment to send back to the high pressure gas pipeline.
[0040] By using the present application, the gas is accelerated by the air injection component 3 and the spiral flow channel respectively, the initial kinetic energy of the gas is improved, the problem of insufficient initial kinetic energy of the gas causing insufficient separation is avoided, and the temperature difference between the cold and hot gas streams at the end is increased; through the cyclone throttling effect of the spiral flow channel and the energy transfer effect of the gas between the inner and outer sides of the second end of the scroll housing 1, two-stage heating of the outer hot gas stream is realized, and the heating effect is improved; when the inner cold gas stream flows to the second end of the scroll worm 2, it can return to the through hole when the control valve core 6 is blocked, so as not to be affected by the positive vortex, the cold gas returns smoothly, and the safety and reliability are high.
[0041] Further, the scroll housing 1 is provided with a scroll chamber, a spiral acceleration chamber and a vortex separation chamber with diameters decreasing in turn from the first end to the second end, the middle part of the scroll worm 2 cooperates with the spiral acceleration chamber to form a spiral flow channel, and the air injection component 3 communicates with the scroll chamber along the rotation direction of the spiral flow channel.
[0042] The gas is injected and accelerated by the air injection component 3 and injected into the scroll chamber along the tangential direction, so that the gas generates an initial cyclone, and the kinetic energy loss of the gas entering the spiral flow channel is reduced; in addition, when the gas flows along the scroll chamber, the spiral acceleration chamber and the vortex separation chamber in turn, the radius of rotation decreases in turn, and the angular velocity increases in turn, so that two acceleration stages are added to the cyclone, and the heating effect and the separation effect of the cold and hot gas streams are improved.
[0043] Further, the diameter of the middle part of the scroll worm 2 is greater than the diameters of the two ends, and the diameter of the first end of the scroll worm 2 is greater than the diameter of the second end.
[0044] It is convenient to make the gas flow have enough space to form a cyclone at the position where the first end of the scroll worm 2 is located, and to reduce the kinetic energy loss; at the same time, the angular velocity difference between the inside and outside of the second end of the scroll worm 2 is increased, and the separation effect and the heating effect of the outer hot gas stream are improved.
[0045] Further, the air injection component 3 comprises an air inlet housing, a nozzle 31 is arranged in the air inlet housing, an inlet pipe 32 is fixed to the upper end of the air inlet housing, the inlet pipe 32 communicates with the nozzle 31, and the nozzle 31 communicates with the inside of the scroll housing 1.
[0046] The inlet pipe 32 can be used to connect the high-pressure gas pipeline before the external pressure regulator, and is convenient to install; the spray group can spray the gas flow into the vortex shell 1, thereby improving the gas flow rate of the vortex shell 1.
[0047] Further, the negative pressure cavity 33 is arranged around the lower part of the spray pipe in the inlet shell, the lower part of the negative pressure cavity 33 is communicated with the lower end of the nozzle 31; and the cold gas guide is further arranged, one end of the cold gas guide is communicated with the cold gas shell 4, and the other end of the cold gas guide is communicated with the negative pressure cavity 33.
[0048] The cold gas in the cold gas chamber is guided out through the cold gas guide, and is guided to the negative pressure cavity 33 after heat exchange with the air in the process; when the nozzle 31 accelerates the gas flow, a negative pressure is formed around the lower end of the nozzle 31, so that the cold gas is merged into the outlet gas flow of the nozzle 31 under the action of the negative pressure, and is brought into the vortex shell 1, thereby realizing the secondary reflux treatment of the cold gas, and avoiding the problem that the cold gas directly discharged leads to poor flow and affects the heating effect.
[0049] Further, the cold gas guide is a spiral coil pipe 8, the spiral coil pipe 8 is wound on the vortex shell 1; the side wall of the cold gas shell 4 is provided with a cold gas channel 41, one end of the cold gas channel 41 is communicated with the inside of the cold gas shell 4, and the other end of the cold gas channel 41 extends to the inside of the first end side wall of the vortex shell 1; one end of the spiral coil pipe 8 is fixed on the first end of the vortex shell 1 and communicated with the cold gas channel 41, and the other end of the spiral coil pipe 8 is fixed on the inlet shell and communicated with the negative pressure cavity 33.
[0050] Through the spiral coil pipe 8, the heat exchange efficiency of the cold gas and the air is improved, so that the cold gas is conveniently heat-absorbed to restore to normal temperature.
[0051] Further, the control valve core 6 is conical and the small end extends into the vortex shell 1, the control valve core 6 can move in the axial direction to adjust the gap size between the outer periphery of the control valve core 6 and the inner wall of the second end of the vortex shell 1.
[0052] It is convenient to adjust the size of the hot gas outlet to adjust the separation and release proportion of the hot gas flow, thereby playing a role in adjusting the output gas temperature, and the flexibility is good.
[0053] Further, the control valve shell 5 is connected with a rotating and twisting component 51 through an internal thread, one end of the rotating and twisting component 51 extends into the control valve shell 5 and is fixedly connected with the control valve core 6.
[0054] Preferably, the rotating and twisting component 51 comprises a screw rod, the screw rod is threadedly connected with the control valve shell 5, and one end of the screw rod extends out of the control valve shell 5 and is fixed with a rotating wheel.
[0055] It is convenient to drive the control valve core 6 to move in the axial direction, and the operation is convenient.
[0056] Further, the side wall of the control valve housing 5 is further fixed with a hot gas interface 7, which is located at the side of the control valve core 6 away from the scroll housing 1, and the hot gas interface 7 is in communication with the inside of the control valve housing 5.
[0057] The hot gas interface 7 can be used to connect external pipelines, so as to guide the hot gas out and use it to heat the low-pressure gas mixture.
[0058] Further, the first end of the scroll worm 2 is fixed with a step 21, and the cold gas housing 4 is provided with a groove corresponding to the position of the scroll worm 2, the first end of the scroll worm 2 is inserted into the groove, and the step 21 is arranged around the groove and in sealing contact with the cold gas housing 4.
[0059] The sealing effect of the first end of the scroll worm 2 and the cold gas housing 4 is improved, and the initial gas flow and the cold gas leakage mixture are avoided.
[0060] In the description of the present application, it should be understood that if the description of the direction, direction or position relationship appears, for example: "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. The direction or position relationship indicated in the specification is based on the direction or position relationship shown in the drawings, and is only for the convenience of understanding the present application and simplifying the description, and does not indicate or imply that the indicated part, element or whole must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0061] In addition, if the order description language appears, for example: "first", "second", etc. The use in the specification is for the convenience of understanding or simplifying the description, for example, in order to distinguish a plurality of technical features of the same type or function, and it is necessary to mention separately, the specification may use the order of the description language of the prefix or suffix to distinguish them. Therefore, it cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one feature. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.
[0062] In the present application, if the structural relative action relationship description language is adopted, for example, "mounting", "connecting", "connecting", "fixing" and the like, unless otherwise explicitly specified and limited, it should be understood in a broad sense. For example, "mounting", "connecting", "connecting" and the like can be fixedly connected, or can be detachably connected, or can be integrated; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship of two elements; "fixing" can be integrated fixing, or can be detachable fixing through a fastener; it can be directly fixed, or it can be fixed through an intermediate medium. For those skilled in the art, the specific meaning of the above description language in the present application can be understood according to the specific circumstances, the context, the coherence of the preceding and following texts, etc.
[0063] In the present application, if the description language containing the meaning of attachment or connection appears, for example, the first feature is "on" or "under" the second feature, unless otherwise explicitly specified and limited, it should not be limitedly understood, for example, "on" or "under" can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. For those skilled in the art, the specific meaning of the above description language in the present application can be understood according to the specific circumstances, the context, the coherence of the preceding and following texts, etc.
[0064] Further, the first feature "above", "above" and "above" of the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0065] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments, examples and features of different embodiments, examples described in the present application without contradiction, which should be included in the scope of the present application.
[0066] Although the embodiments of the present application have been shown and described above, it is to be understood that the above embodiments are merely exemplary and are not to be taken as limiting the present application, and that changes, modifications, substitutions and variations can be made therein by those of ordinary skill in the art without departing from the scope and spirit of the present application as defined by the following claims.
Claims
1. A gas turbine vortex pilot gas heater characterized by: The application relates to a vortex shell (1), a first end of the vortex shell (1) being fixed with an air inlet injection part (3) and a cold air shell (4), the air inlet injection part (3) being located on the side of the vortex shell (1) and communicating with the inside of the vortex shell (1); a vortex worm (2) is arranged in the vortex shell (1), the middle part of the vortex worm (2) is matched with the inner wall of the vortex shell (1) to form a vortex flow channel; the first end of the vortex worm (2) is in sealed contact with the cold air shell (4), and a through hole is arranged in the vortex worm (2) in the axial direction and communicates with the cold air shell (4); a control valve shell (5) is fixed to the second end of the vortex shell (1), a control valve core (6) is arranged in the control valve shell (5), and the outer periphery of the control valve core (6) and the inner wall of the second end of the vortex shell (1) form a hot air outlet.
2. The gas vortex pilot gas heater of claim 1, wherein: The vortex shell (1) is provided with a vortex chamber, a spiral acceleration chamber and a vortex separation chamber with diameters gradually decreasing from the first end to the second end, the middle part of the vortex worm (2) is matched with the spiral acceleration chamber to form a vortex flow channel, and the air inlet injection part (3) communicates with the vortex chamber along the rotation direction of the vortex flow channel.
3. The gas vortex pilot gas heater of claim 2, wherein: The middle part of the vortex worm (2) has a diameter larger than that of the two ends, and the first end of the vortex worm (2) has a diameter larger than that of the second end.
4. The gas vortex pilot gas heater of claim 1, wherein: The air inlet injection part (3) comprises an air inlet shell, a nozzle (31) is arranged in the air inlet shell, an inlet connecting pipe (32) is fixed to the upper end of the air inlet shell, the inlet connecting pipe (32) communicates with the nozzle (31), and the nozzle (31) communicates with the inside of the vortex shell (1).
5. The gas vortex pilot gas heater of claim 4, wherein: A negative pressure cavity (33) is arranged around the lower part of the nozzle in the air inlet shell, the lower part of the negative pressure cavity (33) communicates with the lower end of the nozzle (31); the air inlet injection part (3) further comprises a cold air guide part, one end of the cold air guide part communicates with the cold air shell (4), and the other end of the cold air guide part communicates with the negative pressure cavity (33).
6. The gas vortex pilot gas heater of claim 5, wherein: The cold air guide part is a spiral coil pipe (8), the spiral coil pipe (8) is wound on the vortex shell (1); a cold air channel (41) is arranged in the side wall of the cold air shell (4), one end of the cold air channel (41) communicates with the inside of the cold air shell (4), the other end of the cold air channel (41) extends to the inside of the first end side wall of the vortex shell (1), one end of the spiral coil pipe (8) is fixed to the first end of the vortex shell (1) and communicates with the cold air channel (41), and the other end of the spiral coil pipe (8) is fixed to the air inlet shell and communicates with the negative pressure cavity (33).
7. The gas turbine vortex pilot gas heater of claim 1 wherein: The control valve core (6) is conical and has a small end extending into the vortex shell (1), the control valve core (6) can move in the axial direction to adjust the size of the gap between the outer periphery of the control valve core (6) and the inner wall of the second end of the vortex shell (1).
8. The gas vortex pilot gas heater of claim 7, wherein: The control valve shell (5) is connected with a rotating and twisting part (51) through internal threads, one end of the rotating and twisting part (51) extends into the control valve shell (5) and is fixedly connected with the control valve core (6).
9. The gas turbine vortex pilot gas heater of claim 1 wherein: A hot air interface (7) is further fixed to the side wall of the control valve shell (5), the hot air interface (7) is located on the side of the control valve core (6) away from the vortex shell (1), and the hot air interface (7) communicates with the inside of the control valve shell (5).
10. The gas turbine vortex pilot gas heater of claim 1 wherein: The first end of the scroll worm (2) is fixed with a step (21), and a groove is arranged on the cold air shell (4) for the part of the scroll worm (2), the first end of the scroll worm (2) is inserted into the groove, and the step (21) is arranged around the groove and in sealing contact with the cold air shell (4).