Continuous flow adjusting device for red smoke nitric acid small-molecule gel oxidizing agent

Abstract

The invention provides a device for continuously adjusting the flow of a red smoke nitric acid small-molecule gel oxidant, which is characterized by comprising a static plate assembly, a movable plate assembly, an inlet pipe nozzle and a driving motor, the static plate assembly comprises an outlet pipe nozzle, a static partition plate, a liquid inlet cavity and a sealing gasket; the outlet pipe nozzle is connected with the static partition plate; the movable plate assembly comprises a sealing ring and a movable partition plate; the movable partition plate is provided with a sealing groove and a movable partition plate driving rod; the tail end face of the movable partition plate driving rod and the outer end face of the liquid inlet cavity sealing head are both engraved with zero position marking scribed lines; the liquid inlet cavity is provided with a cylindrical inlet section; the cylindrical inlet section is connected with the inlet pipe nozzle; the driving motor is connected with the movable partition plate driving rod; the movable partition plate driving rod penetrates through an opening in the liquid inlet cavity sealing head; the static partition plate and the movable partition plate are each provided with symmetrically-distributed fan-shaped holes. The problems that the flow of the gel oxidizing agent cannot be continuously adjusted in a large range, and the adjusting valve is large in size and weight are solved, and high-pressure work can be achieved under the condition that the size and the weight are reduced.

Description

Technical Field

[0001] The invention relates to the field of aerospace propulsion, and in particular to a flow rate continuous regulating device for a red smoke nitric acid small molecule gel oxidant. Background Art

[0002] Red smoke nitric acid is a mixture of nitrogen tetroxide and nitric acid. It has the characteristics of low freezing point, high boiling point and high density. It is an oxidizer used in liquid rocket engines. In order to improve the long-term storage performance of liquid oxidizers and reduce the harm caused by accidental leakage, small molecule solidification factors are added to red smoke nitric acid to change the oxidizer from liquid to semi-solid, avoiding the leakage of liquid propellant and a series of risks in the pre-packaging process. At the same time, it can be transformed from solid to liquid under the action of shear force, and the thrust of the rocket engine can be continuously adjusted based on the flow control device.

[0003] The existing liquid oxidant flow control valve is usually a servo valve solution. The servo valve is a multi-stage hydraulic follower element controlled by electro-hydraulic combination. It is mainly used to amplify a very small electrical input signal into a hydraulic energy output with a high success rate. The flow is distributed in a step-like manner, the flow response speed is slow, and it is difficult to achieve continuous regulation. Although the throat plug type flow control valve can achieve continuous regulation, the axial load formed by the pressure difference before and after the throat plug at the moment of opening or closing the valve is very large, and the required drive motor has a large power, which makes the drive motor large in size and weight, which brings great limitations to improving the mass ratio of the propulsion system. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a flow rate continuous adjustment device for red smoke nitric acid small molecule gel oxidant, which drives the dynamic baffle to rotate through a motor, causing the fan-shaped holes of the static baffle to be misaligned, thereby forming a channel with a continuously changing flow area, thereby realizing continuous adjustment of the flow rate of the red smoke nitric acid small molecule gel oxidant.

[0005] The specific technical solutions of the present invention are as follows:

[0006] A flow rate continuous regulating device for a red smoke nitric acid small molecule gel oxidant, characterized in that it comprises a static plate assembly, a dynamic plate assembly, an inlet nozzle, and a driving motor;

[0007] The static plate assembly includes an outlet nozzle, a static partition, a liquid inlet chamber, and a sealing gasket; the outlet nozzle is connected to the static partition, the static partition is connected to the liquid inlet chamber through a thread, and an opening is provided on the liquid inlet chamber cover; the liquid inlet chamber is provided with a cylindrical inlet section; the cylindrical inlet section is connected to the inlet nozzle.

[0008] The static partition is provided with a sealing groove, and a sealing gasket is arranged in the sealing groove.

[0009] The moving plate assembly includes a sealing ring and a moving partition; the moving partition is provided with a sealing groove, and a sealing ring is provided in the sealing groove; the moving partition is provided with a driving rod, the driving rod passes through an opening on the liquid inlet chamber head, and the driving rod is connected to a driving motor.

[0010] The static partition and the dynamic partition fit closely together and both have symmetrically distributed fan-shaped holes.

[0011] The outlet nozzle and the inlet nozzle are standard parts, and the inner diameter ranges from 8 to 40 mm.

[0012] The end surface of the driving rod and the outer end surface of the liquid inlet cavity seal are both engraved with zero position marking lines for marking the fully closed state of the fan-shaped hole between the static partition and the dynamic partition.

[0013] The rotation angle range of the movable partition is 0 to 90 degrees, and the flow area changes continuously from 0 to a maximum value, thereby realizing continuous flow regulation.

[0014] The dynamic partition plate and the static partition plate are bonded to each other, and the flatness of the bonding surface is less than or equal to 0.01 mm, and the roughness is less than or equal to 0.8.

[0015] The thickness of the static partition is greater than or equal to 10 mm, and the thickness of the dynamic partition is greater than or equal to 8 mm.

[0016] The central angle of the fan-shaped hole is 76°±3°.

[0017] The center line of the inlet nozzle and the center line of the body are distributed at an angle of 120 degrees to reduce flow resistance loss and reduce the volume of the continuous flow adjustment device.

[0018] The abutting surfaces of the static partition and the dynamic partition are uniformly coated with red smoke nitric acid small molecule gel oxidant volatile residue with an average thickness of 0.5±0.1 mm to strengthen the seal and reduce friction.

[0019] The maximum flow area of ​​the fan-shaped hole is equal to the pipeline flow area of ​​the outlet nozzle and the inlet nozzle.

[0020] The present invention solves the problems that the flow rate of gel oxidant cannot be adjusted continuously over a large range and the regulating valve is large in size and weight. Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention drives the movable partition to rotate by a driving motor, and under the lubrication effect of the volatile residues of the red smoke nitric acid small molecule gel oxidant, only a relatively small power motor is needed to achieve rapid rotation, thereby significantly reducing the power, volume and weight of the driving motor;

[0022] The present invention can achieve continuous adjustment from fully closed to fully open by changing the flow area between the dynamic baffle and the static baffle, that is, continuous adjustment from 0 flow to maximum flow, providing guarantee for continuous adjustment of engine thrust;

[0023] The present invention can realize rapid and accurate regulation of the flow rate of the small molecule gel oxidant by driving the rotation of the driving motor to drive the movable partition to rotate.

[0024] The liquid oxidant provided by the present invention has a small flow area and a compact valve body structure, and can achieve high-pressure operation while reducing the volume and weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A cross-sectional view of a continuous flow regulating device for a red smoke nitric acid small molecule gel oxidant provided in an embodiment of the present invention.

[0027] Figure 2 A schematic diagram of the appearance of a continuous flow regulating device for a red smoke nitric acid small molecule gel oxidant provided in an embodiment of the present invention.

[0028] Figure 3 Schematic diagram of a static partition in an embodiment of the present invention.

[0029] Figure 4 Schematic diagram of a dynamic partition in an embodiment of the present invention.

[0030] Figure 5 This is an example diagram of the relationship between the oxidant flow rate and the opening degree in an embodiment of the present invention.

[0031] The accompanying drawings are marked as follows: 1. outlet nozzle; 2. static partition; 3. inlet nozzle; 4. sealing ring; 5. driving motor; 6. liquid inlet chamber; 7. dynamic partition; 8. sealing gasket. DETAILED DESCRIPTION

[0032] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0033] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0034] The following is combined with Figure 1-Figure 5 The present invention is described in further detail.

[0035] Figure 1 A cross-sectional view of a continuous flow regulating device for a red smoke nitric acid small molecule gel oxidant provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of the appearance of a continuous flow control device for a red smoke nitric acid small molecule gel oxidant provided by an embodiment of the present invention. Figures 1-2 As shown, a flow rate continuous regulating device for a red smoke nitric acid small molecule gel oxidant comprises a static plate assembly, a dynamic plate assembly, an inlet nozzle 3, and a driving motor 5.

[0036] The static plate assembly comprises an outlet nozzle 1, a static baffle 2, a liquid inlet cavity 6, and a sealing gasket 8; the outlet nozzle 1 is connected to the static baffle 2, and the static baffle 2 is connected to the liquid inlet cavity 6 through a thread; the liquid inlet cavity 6 is provided with a cylindrical inlet section, and the cylindrical inlet section is connected to the inlet nozzle 3, and an opening is provided on the end cap of the liquid inlet cavity 6;

[0037] The static partition plate 2 is provided with a sealing groove, and a sealing gasket 8 is provided in the sealing groove;

[0038] The movable plate assembly comprises a sealing ring 4 and a movable partition 7; the movable partition 7 is provided with a sealing groove, and the sealing ring 4 is provided in the sealing groove; the movable partition 7 is provided with a driving rod, the driving rod passes through the opening on the end cap of the liquid inlet chamber 6, and the driving rod is connected to the driving motor 5;

[0039] Figure 3 Schematic diagram of a static partition in an embodiment of the present invention. Figure 4 FIG. 2 is a schematic diagram of a movable partition in an embodiment of the present invention. Figures 3-4 As shown, the static partition 2 and the dynamic partition 7 fit tightly together and both have symmetrically distributed fan-shaped holes.

[0040] The outlet nozzle 1 and the inlet nozzle 3 are standard parts, and the inner diameter ranges from 8 to 40 mm.

[0041] The end surface of the driving rod and the outer end surface of the end cap of the liquid inlet chamber 6 are both engraved with a zero position marking line for marking the fully closed state of the fan-shaped hole between the static partition 2 and the dynamic partition 7.

[0042] The rotation angle range of the movable partition plate 7 is 0-90 degrees, and the flow area changes continuously from 0 to the maximum value, thereby realizing continuous flow regulation.

[0043] The dynamic partition plate 7 and the static partition plate 2 are bonded to each other, and the flatness of the bonding surface is less than or equal to 0.01 mm, and the roughness is less than or equal to 0.8.

[0044] The thickness of the static partition plate 2 is greater than or equal to 10 mm, and the thickness of the dynamic partition plate 7 is greater than or equal to 8 mm.

[0045] The central angle of the fan-shaped hole is 76°±3°.

[0046] like Figures 1-2 As shown, the center line of the inlet nozzle 3 and the center line of the body are distributed at an angle of 120° to reduce flow resistance loss and reduce the volume of the continuous flow adjustment device.

[0047] The abutting surfaces of the static partition plate 2 and the dynamic partition plate 7 are uniformly coated with red smoke nitric acid small molecule gel oxidant volatile residue with an average thickness of 0.5±0.1 mm to strengthen the seal and reduce friction.

[0048] The maximum flow area of ​​the fan-shaped hole is equal to the pipeline flow area of ​​the outlet nozzle 1 and the inlet nozzle 3.

[0049] Combination Figures 1 to 4 The specific operation of the flow rate continuous adjustment device of a red smoke nitric acid small molecule gel oxidant of this embodiment is as follows:

[0050] First, the inlet nozzle 3 and the outlet nozzle 1 are respectively connected to the upstream and downstream of the continuous flow regulating device of the red smoke nitric acid small molecule gel oxidant; the upstream pipeline valve is opened to allow the red smoke nitric acid small molecule gel oxidant to be filled into the liquid inlet cavity 6. Figure 5 : is an example diagram of the relationship between the oxidant flow rate and the opening degree in the embodiment of the present invention. Figure 5 As shown, according to the relationship between the red smoke nitric acid small molecule gel oxidant flow rate and the rotation angle of the driving rod of the dynamic partition 7 under a given conveying pressure, the rotation angle of the driving motor 5 is precisely controlled by the program, so as to realize the on-demand, continuous and rapid delivery of the required red smoke nitric acid small molecule gel oxidant flow rate.

[0051] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solution of the present invention using the above disclosed contents without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the contents of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A flow rate continuous regulating device for a red smoke nitric acid small molecule gel oxidant, characterized in that: It comprises a static plate assembly, a dynamic plate assembly, an inlet nozzle (3), and a driving motor (5), wherein The static plate assembly comprises an outlet nozzle (1), a static baffle (2), a liquid inlet chamber (6), and a sealing gasket (8); the outlet nozzle (1) is connected to the static baffle (2), and the static baffle (2) is connected to the liquid inlet chamber (6) via a thread; The liquid inlet chamber (6) is provided with a cylindrical inlet section, the cylindrical inlet section is connected to the inlet nozzle (3), and an opening is provided on the sealing head of the liquid inlet chamber (6); The static partition plate (2) is provided with a sealing groove, and a sealing gasket (8) is provided in the sealing groove; The movable plate assembly comprises a sealing ring (4) and a movable partition (7); the movable partition (7) is provided with a sealing groove, and the sealing ring (4) is provided in the sealing groove; the movable partition (7) is provided with a driving rod, the driving rod passes through an opening on the sealing head of the liquid inlet chamber (6), and the driving rod is connected to the driving motor (5); The static partition plate (2) and the dynamic partition plate (7) are tightly fitted and both have symmetrically distributed fan-shaped holes.

2. The flow rate continuous regulating device of a red smoke nitric acid small molecule gel oxidant according to claim 1 is characterized in that: The outlet nozzle (1) and the inlet nozzle (3) are standard parts, and the inner diameter ranges from 8 to 40 mm.

3. The flow rate continuous regulating device of a red smoke nitric acid small molecule gel oxidant according to claim 1 is characterized in that: The end surface of the driving rod and the outer end surface of the sealing head of the liquid inlet chamber (6) are both engraved with a zero position marking line for marking the fully closed state of the fan-shaped hole between the static partition (2) and the dynamic partition (7).

4. A flow rate continuous regulating device for a red smoke nitric acid small molecule gel oxidant according to claim 1 or 2, characterized in that: The movable partition plate (7) has a rotation angle range of 0 to 90 degrees, and a flow area that changes continuously from 0 to a maximum value, thereby achieving continuous flow regulation.

5. A flow rate continuous regulating device for a red smoke nitric acid small molecule gel oxidant according to claim 1 or 2, characterized in that: The dynamic partition plate (7) and the static partition plate (2) are bonded to each other, and the flatness of the bonding surface is less than or equal to 0.01 mm, and the roughness is less than or equal to 0.

8.

6. The flow rate continuous regulating device of a red smoke nitric acid small molecule gel oxidant according to claim 1, characterized in that: The thickness of the static partition (2) is greater than or equal to 10 mm, and the thickness of the dynamic partition (7) is greater than or equal to 8 mm.

7. The flow rate continuous regulating device of a red smoke nitric acid small molecule gel oxidant according to claim 1, characterized in that: The central angle of the fan-shaped hole is 76°±3°.

8. The flow rate continuous regulating device of a red smoke nitric acid small molecule gel oxidant according to claim 1, characterized in that: The center line of the inlet nozzle (3) is distributed at an angle of 120° with the center line of the body, so as to reduce flow resistance loss and reduce the volume of the continuous flow regulating device.

9. The flow rate continuous regulating device of a red smoke nitric acid small molecule gel oxidant according to claim 1, characterized in that: The abutting surfaces of the static partition plate (2) and the dynamic partition plate (7) are uniformly coated with red smoke nitric acid small molecule gel oxidant volatile residue with an average thickness of 0.5±0.1 mm to strengthen the seal and reduce friction.

10. The flow rate continuous regulating device of a red smoke nitric acid small molecule gel oxidant according to claim 1, characterized in that: The maximum flow area of ​​the fan-shaped hole is equal to the pipeline flow area of ​​the outlet nozzle (1) and the inlet nozzle (3).

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