A gas-solid two-phase flow regulating valve for powder propellant

Abstract

The present invention relates to a gas-solid two-phase flow regulating valve for powder propellant, comprising a valve core, a valve body, a delivery pipe, a connecting sleeve, a sealing end cover, a sealing shell, an electromagnetic device, and a slider. The present invention designs nozzles of different diameters in multi-channel delivery pipelines into the same regulating valve, and nozzles of different throat diameters in the valve core replace two or multiple delivery pipelines, thereby switching the position of the valve core to achieve the flow of powder propellant in nozzles of different throat diameters, thereby achieving the purpose of regulating the powder flow. Compared with the previous method of regulating the flow in two or multiple delivery pipelines, the present invention solves the problems of complex structure, heavy weight, and large loss along the way of multi-channel delivery of powder propellant, thereby effectively improving the efficiency of powder propellant flow regulation.

Description

Technical Field

[0001] The invention relates to the field of aerospace power technology, and in particular to a gas-solid two-phase flow regulating valve for powder propellant. Background Art

[0002] The powder fuel engine is a propulsion system that uses metal powder as fuel, and has the characteristics of thrust regulation and multiple starts. When the engine is working, in order to achieve functions such as thrust regulation, it is necessary to ensure that the powder propellant can be stably supplied. Therefore, the delivery of powder fuel is crucial. The key to solving the problem is how to efficiently deliver and regulate the flow rate. At present, powder flow regulation usually increases the pressure of the tank or uses two-way or multi-way delivery. The so-called multi-way regulation is to design nozzle structures with different diameters in multiple pipelines to achieve delivery of different flow rates. However, the use of two-way or multi-way delivery will increase the complexity and instability of the system, and also put forward higher requirements on the structural design of the system. Increasing the pressure of the tank puts forward higher requirements on the pressure accuracy control. Therefore, it is not conducive to the lightweight design of the powder fuel supply system. Designing a lighter two-phase flow control valve is the key to solving the above problems.

[0003] In order to achieve light and fast adjustment of powder fuel flow and be suitable for practical engineering applications. The present invention designs nozzles of different diameters in multi-channel delivery pipelines into the same regulating valve, and nozzles of different throat diameters in the valve core replace two or multiple delivery pipelines. Thus, by switching the valve core position, the powder propellant can flow in nozzles of different throat diameters, thereby achieving the purpose of regulating the powder flow. Compared with the previous method of regulating the flow in two or multiple delivery pipelines, the present invention solves the problems of complex multi-channel delivery structure, heavy weight, and large loss along the way of powder propellant, thereby effectively improving the efficiency of powder propellant flow control. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention aims to provide a gas-solid two-phase flow control valve for powder propellant, which can adjust the two-phase flow by changing the flow cross-sectional area of ​​the valve core.

[0005] The present invention is achieved through the following technical solutions.

[0006] A powder propellant gas-solid two-phase flow regulating valve, comprising a valve core, a valve body, a delivery pipe, a connecting sleeve, a sealing end cover, a sealing shell, an electromagnetic device, and a slider;

[0007] The valve core has two symmetrical sections and slide grooves on the side, a sealing groove at both ends, and two nozzles in the center, which penetrate the valve core and connect the two sections;

[0008] The valve body has flanges at both ends, threaded holes are opened on the sides, two cylindrical barrels are welded on the sides, the cylindrical barrels are provided with internal threads, and connection holes are evenly distributed on the flanges;

[0009] One end of the delivery pipe is provided with an external thread 1;

[0010] The connecting sleeve is a concentric ring structure, the inner surface is provided with a second internal thread matched with the first external thread, the outer surface is provided with a second external thread matched with the first internal thread, the end surface is provided with a second sealing groove, and the number of connecting sleeves is two;

[0011] The sealing end cover is a hollow disc, provided with evenly distributed connection holes 2 corresponding to the connection holes 1, a partition plate and a thread 1 are provided at the hollow position, and the number of sealing end covers is two;

[0012] The surface of one side of the sealing shell opening is provided with a thread 2 which is matched and connected with the thread 1, and the number of the sealing shells is two;

[0013] The electromagnetic device is composed of two pairs of coils respectively wound on the surfaces of two pairs of armatures;

[0014] The surface of the slider has a threaded structure that matches the threaded hole;

[0015] The slider is installed in the valve body through a threaded structure and a threaded hole. The slider is restricted in the slide groove of the valve core. The external thread 1 of the delivery pipe is connected with the internal thread 2 of the connecting sleeve. The external thread 2 of the connecting sleeve is connected with the internal thread 1 of the cylindrical tube. The sealing groove 2 of the connecting sleeve is embedded with an O-ring and fits the cross section of the valve core for sealing the nozzle. The sealing groove 1 of the valve core is embedded with an O-ring and fits the inner surface of the valve body. Two sealing end covers are respectively installed at both ends of the valve body through connecting hole 1, connecting hole 2, bolts and nuts. One end of the spring is welded to the end face of the valve core, and the other end is fixed to the partition. There are two springs located at both ends of the valve core and the outside of the partition. Two pairs of electromagnetic devices are respectively placed on the two sealing end covers. The thread 2 of the sealing shell is connected with the thread 1 of the sealing end cover to cover the electromagnetic device. The valve core moves in the valve body cavity under the freedom restriction of the slide groove and the slider.

[0016] Furthermore, the two nozzles have different diameters, the diameter of the nozzles is 2 mm to 20 mm, and both sides of the nozzles extend to the cross section at a certain angle, so that the maximum diameter of the nozzles is consistent with the diameter of the delivery pipe.

[0017] Furthermore, the depth of the cross section is 3 mm to 8 mm.

[0018] Furthermore, the number of the connection holes 1 and 2 is four.

[0019] Furthermore, the number of the sliding block is one.

[0020] Under the condition of constant upstream total pressure, the two-phase flow rate can be regulated by changing the flow cross-sectional area of ​​the valve core. According to the above-mentioned gas-solid two-phase flow characteristics, the working principle of the present invention is as follows: when the electromagnetic devices are not powered on, the valve core is in a neutral position due to the action of the spring force, and the delivery pipe is in a closed state at this time; and when the electromagnetic device at one end of the large-diameter nozzle hole is powered on, and the electromagnetic device at one end of the small-large-diameter nozzle hole is not powered on, an electromagnetic force will be generated at one end of the large-diameter nozzle hole, and the valve core will slide in the valve body cavity under the combined action of the electromagnetic force and the spring forces at both ends. At this time, the delivery pipe and the small nozzle hole are on a horizontal axis, and the powder propellant will flow into the delivery pipe through the small-diameter nozzle to achieve the circulation of the delivery pipe; when the electromagnetic devices at both ends are not powered off, the valve core will return to the neutral position under the action of the spring force; when the electromagnetic device at one end of the small-diameter nozzle hole is powered on, and the electromagnetic device at one end of the large-diameter nozzle hole is not powered on, the valve core moves toward one end of the small-diameter nozzle hole, and at this time, the delivery pipe and the large nozzle hole are on a horizontal axis, and the powder propellant will flow into the delivery pipe through the large-diameter nozzle.

[0021] Compared with the prior art, the advantages of the present invention are as follows: the invention provides a powder propellant gas-solid two-phase flow regulating valve, in which nozzles of different diameters in multi-way delivery pipelines are designed into the same regulating valve, and nozzles of different throat diameters in the valve core replace two or more delivery pipelines. Thus, by switching the valve core position, the powder propellant can flow in nozzles of different throat diameters, thereby achieving the purpose of regulating the powder flow. Compared with the previous method of regulating the flow in two or more delivery pipelines, the present invention solves the problems of complex multi-way delivery structure of powder propellant, heavy weight, and large loss along the way, thereby effectively improving the flow control efficiency of powder propellant. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional view of the structure of the gas-solid two-phase flow control valve of the present invention;

[0023] Figure 2 This is a schematic diagram of the valve core structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the valve body structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the delivery pipe of the present invention;

[0026] Figure 5 This is a schematic diagram of the connecting sleeve structure of the present invention;

[0027] Figure 6 This is a schematic diagram of the sealing end cover structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the sealing shell structure of the present invention;

[0029] Figure 8 is a schematic diagram of an electromagnetic device;

[0030] Fig. 9 It is a schematic diagram of the slider structure;

[0031] Fig.10 for Figure 1 Unlabeled graph;

[0032] Fig.11 for Fig.10 A partial enlarged view of point a in the middle;

[0033] Fig.12 for Fig.10 The local enlarged view of point b in the middle;

[0034] Fig.13 for Fig.10 The local enlarged image of point c in the middle;

[0035] Fig.14 for Fig.10 The local enlarged image at point d in the middle;

[0036] Fig.15 for Fig.10 The local enlarged view at point e in the middle;

[0037] In the figure:

[0038] 1-valve core, 101-section, 102-sealing groove 1, 103-nozzle, 104-slideway;

[0039] 2-valve body, 201-flange, 202-threaded hole, 203-cylindrical barrel, 204-internal thread 1, 205-connecting hole 1;

[0040] 3- delivery pipe, 301- external thread one;

[0041] 4-connecting sleeve, 401-internal thread 2, 402-external thread 2, 403-sealing groove 2;

[0042] 5-sealing end cover, 501-connecting hole 2, 502-partition plate, 503-thread 1;

[0043] 6-sealing shell, 601-thread two;

[0044] 7-electromagnetic device, 701-armature, 702-coil;

[0045] 8-O-ring;

[0046] 9-slider, 901-external thread three;

[0047] 10- nut;

[0048] 11-bolt;

[0049] 12- Spring. DETAILED DESCRIPTION

[0050] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0051] like Figures 1 to 9 As shown, a powder propellant gas-solid two-phase flow regulating valve comprises a valve core 1, a valve body 2, a delivery pipe 3, a connecting sleeve 4, a sealing end cover 5, a sealing shell 6, an electromagnetic device 7, and a slider 9;

[0052] The valve core 1 has two symmetrical sections 101 and a slide groove 104 on the side, a sealing groove 102 at both ends, and two nozzles 103 in the center, which penetrate the valve core 1 and connect the two sections 101;

[0053] The valve body 2 has flanges 201 at both ends, threaded holes 202 on the sides, and two cylindrical barrels 203 welded on the sides. The cylindrical barrels 203 are provided with internal threads 204, and connecting holes 205 are evenly distributed on the flanges.

[0054] One end of the delivery pipe 3 is provided with an external thread 301;

[0055] The connecting sleeve 4 is a concentric ring structure, with an inner surface provided with an inner thread 2 401 matching with an outer thread 1 301, an outer surface provided with an outer thread 2 402 matching with an inner thread 1 204, and an end surface provided with a sealing groove 2 403, and the number of connecting sleeves is two;

[0056] The sealing end cover 5 is a hollow disc, and is provided with evenly distributed connection holes 501 corresponding to the connection holes 205. A partition plate 502 and a thread 503 are provided at the hollow position. There are two sealing end covers 5.

[0057] The surface of the sealing shell 6 on one side of the opening has a second thread 601 that cooperates with the first thread 503, and there are two sealing shells 6;

[0058] The electromagnetic device 7 is composed of two pairs of coils 702 respectively wound on the surfaces of two pairs of armatures 701;

[0059] The surface of the slider 9 has a thread structure 901 that matches the threaded hole 202;

[0060] The slider 9 is installed in the valve body 2 through the threaded structure 901 and the threaded hole 202. The slider 9 is limited in the slide groove 104 of the valve core 1. The external thread 1 301 of the delivery pipe 3 is connected with the internal thread 2 401 of the connecting sleeve 4. The external thread 2 402 of the connecting sleeve 4 is connected with the internal thread 1 204 of the cylindrical tube 203. The sealing groove 2 403 of the connecting sleeve 4 is embedded with an O-ring 8 and fits with the cross section 101 of the valve core 1 for sealing the nozzle 103. The sealing groove 1 102 of the valve core 1 is embedded with an O-ring 8 and fits with the inner surface of the valve body 2. The two sealing end covers 5 The two ends of the valve body 2 are respectively installed through the connecting hole 1 205, the connecting hole 2 501, the bolt 11, and the nut 10. One end of the spring 12 is welded to the end face of the valve core 1, and the other end is fixed to the partition 502. The spring 12 has two ends located at the two ends of the valve core 1 and the outside of the partition 502. Two pairs of electromagnetic devices are respectively placed on the two sealing end covers 5. The thread 2 601 of the sealing shell 6 is connected with the thread 1 503 of the sealing end cover 5 to cover the electromagnetic device. The valve core 1 moves in the cavity of the valve body 2 under the freedom restriction of the slide groove 104 and the slider 9.

[0061] Furthermore, the two nozzles 103 have different diameters, the diameter of the nozzle 103 is 2 mm to 20 mm, and both sides of the nozzle 103 extend to the cross section 101 at a certain angle, so that the maximum diameter of the nozzle 103 is consistent with the diameter of the delivery pipe 3.

[0062] Furthermore, the depth of the cross section 101 is 3 mm to 8 mm.

[0063] Furthermore, the number of the connection hole 1 205 and the connection hole 2 501 is four.

[0064] Furthermore, the number of the slider 9 is one.

[0065] The working principle is: the electromagnetic device is powered on or off to control the sliding of the valve core. Specifically, when both electromagnetic devices are not powered on, the valve core is in the middle position due to the action of the spring force, and the delivery pipe is in the closed state; when the electromagnetic device at one end of the large diameter nozzle hole is powered on, the valve core slides under the electromagnetic force, and the powder propellant flows into the delivery pipe on one side through the small nozzle hole. When the electromagnetic device at one end of the large diameter nozzle hole is powered off, the valve core is in the middle position again. When the electromagnetic device at one end of the small diameter nozzle hole is powered on, the principle process is the same as above.

[0066] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A gas-solid two-phase flow control valve for powder propellant, It is characterized in that It comprises a valve core (1), a valve body (2), a delivery pipe (3), a connecting sleeve (4), a sealing end cover (5), a sealing shell (6), an electromagnetic device (7), and a slider (9); The valve core (1) has two symmetrical sections (101) and a slide groove (104) on the side, a sealing groove (102) at both ends, and two nozzles (103) in the center. The nozzles (103) penetrate the valve core (1) and connect the two sections (101). The valve body (2) has flanges (201) at both ends, threaded holes (202) on the sides, two cylindrical tubes (203) welded on the sides, the cylindrical tubes (203) are provided with internal threads (204), and connection holes (205) are evenly distributed on the flanges; One end of the delivery pipe (3) is provided with an external thread (301); The connecting sleeve (4) is a concentric ring structure, the inner surface is provided with an inner thread (401) matching with the outer thread (301), the outer surface is provided with an outer thread (402) matching with the inner thread (204), the end surface is provided with a sealing groove (403), and the number of connecting sleeves is two; The sealing end cover (5) is a hollow disc, provided with evenly distributed second connection holes (501) corresponding to the first connection holes (205), a partition plate (502) and a first thread (503) are provided in the hollow part, and the number of sealing end covers (5) is two; The surface of one side of the opening of the sealing shell (6) has a second thread (601) that cooperates with the first thread (503), and the number of the sealing shells (6) is two; The electromagnetic device (7) is composed of two pairs of coils (702) respectively wound on the surfaces of two pairs of armatures (701); The surface of the slider (9) is provided with an external thread three (901) that matches the threaded hole (202); The slider (9) is installed in the valve body (2) through the external thread three (901) and the threaded hole (202). The slider (9) is restricted in the slide groove (104) of the valve core (1). The external thread one (301) of the delivery pipe (3) is connected to the internal thread two (401) of the connecting sleeve (4). The external thread two (402) of the connecting sleeve (4) is connected to the internal thread one (204) of the cylindrical tube (203). The sealing groove two (403) of the connecting sleeve (4) is embedded with an O-type sealing ring (8) and fits with the cross section (101) of the valve core (1) for sealing the nozzle (103). The sealing groove one (102) of the valve core (1) is embedded with an O-type sealing ring (8) and fits with the inner surface of the valve body (2). The two sealing grooves are connected to the valve core (2). The sealing end cover (5) is respectively installed at the two ends of the valve body (2) through the connection hole 1 (205), the connection hole 2 (501), the bolt (11) and the nut (10); one end of the spring (12) is welded to the end surface of the valve core (1), and the other end is fixed to the partition (502); the spring (12) has two ends respectively located at the two ends of the valve core (1) and the outer side of the partition (502); two pairs of electromagnetic devices are respectively arranged on the two sealing end covers (5); the thread 2 (601) of the sealing shell (6) is connected to the thread 1 (503) of the sealing end cover (5) to cover the electromagnetic device; the valve core (1) moves in the cavity of the valve body (2) under the freedom restriction of the slide groove (104) and the slider (9).

2. The gas-solid two-phase flow control valve for powder propellant according to claim 1, It is characterized in that The two nozzles (103) have different diameters, the diameter of the nozzle (103) being 2 mm to 20 mm. Both sides of the nozzle (103) extend to the cross section (101) at a certain angle, so that the maximum diameter of the nozzle (103) is consistent with the diameter of the delivery pipe (3).

3. The gas-solid two-phase flow control valve for powder propellant according to claim 1, It is characterized in that The depth of the cross section (101) is 3 mm to 8 mm.

4. The gas-solid two-phase flow control valve for powder propellant according to claim 1, It is characterized in that The number of the connection hole one (205) and the connection hole two (501) is four.

5. The gas-solid two-phase flow control valve for powder propellant according to claim 1, It is characterized in that The number of the sliding block (9) is one.

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