Propellant characteristic testing device

Abstract

The utility model discloses a propellant characteristic testing device, which relates to the technical field of propellant characteristic testing devices and comprises a first pressure bottle, a second pressure bottle and a gas mixer, the gas mixer comprises a shell, a partition plate, a grid plate, an elastic element and a supporting piece, a cylindrical inner cavity is arranged in the shell, the grid plate slides in the cylindrical inner cavity in a sealing manner, and the elastic element is arranged in the cylindrical inner cavity. The grid plate divides the cylindrical inner cavity into a first cavity and a second cavity, the grid plate comprises a grid area and a sealing plate area which are distributed in the circumferential direction, the partition plate is arranged on one side of the grid plate and rotationally connected with the grid plate, the partition plate is provided with an air outlet area corresponding to the sealing plate area, a spiral groove is formed in the inner circumferential face of the cylindrical inner cavity, and a sliding block is fixedly arranged on the outer circumferential face of the partition plate. The sliding block slides in the spiral groove, the first pressure bottle communicates with the first cavity through a first pipeline, and the second pressure bottle communicates with the second cavity through a second pipeline. According to the utility model, gas can be fully mixed.

Description

TECHNICAL FIELD

[0001] The utility model relates to propellant characteristic test device technical field especially relates to a propellant characteristic test device. BACKGROUND

[0002] As an advanced micro-thrust propulsion method, electric propulsion will play an increasingly important role in the attitude and orbit control of satellites or spacecraft, orbit transfer and interstellar navigation. Electric resistance heating thrusters, electric arc heating engines, ion engines, magnetic plasma thrusters and other electric propulsion devices in the electric propulsion family are widely researched. The above-mentioned electric propulsion thrust devices will select gas working medium as the propellant for engine operation. Therefore, the gas propellant supply device is indispensable in the ground simulation test of electric propulsion engine.

[0003] Propellant flow is an indispensable parameter for evaluating the performance of thrusters. Electric propulsion engine ground test requires accurate measurement of propellant flow to determine the performance of thrusters. Therefore, propellant flow measurement and control are very important in engine test. However, in the actual operation process, different gases are mixed as propellant simulation experiment, and two kinds of gases are usually mixed into the same tank for mixing. The mixture of the two gases is often not sufficient, which reduces the accuracy of experimental data.

[0004] Therefore, it is necessary to provide a propellant characteristic test device to solve the above technical problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a propellant characteristic test device to solve the above-mentioned problems of the prior art, so that the gases can be fully mixed and the accuracy of experimental data is improved.

[0006] To achieve the above-mentioned purpose, the utility model provides the following scheme:

[0007] The utility model provides a kind of propellant characteristic test device, including first pressure bottle, second pressure bottle and gas mixer, the gas mixer includes shell, baffle and grid plate, the cylindrical inner cavity is equipped in the shell, the grid plate is sealed and slides in the cylindrical inner cavity, the grid plate separates the cylindrical inner cavity into first cavity and second cavity, the grid plate includes the grid area and the sealing plate area distributed along circumference, a plurality of first through holes are equipped on the grid area, the baffle is arranged in one side of the grid plate and is rotatably connected with the grid plate, the baffle has the air outlet area corresponding with the sealing plate area, a plurality of second through holes are equipped on the air outlet area, spiral groove is equipped on the inner periphery of the cylindrical inner cavity, sliding block is fixed on the outer periphery of the baffle, the sliding block is slidably arranged in the spiral groove, the first pressure bottle is connected with the first cavity by first pipeline, first valve is equipped on the first pipeline, the second pressure bottle is connected with the second cavity by second pipeline, second valve is equipped on the second pipeline.

[0008] In an embodiment, the gas mixer further comprises an elastic element and a support, the elastic element is arranged on the side of the grid plate away from the baffle, one end of the elastic element is connected with the grid plate, and the other end is connected with the support, and the support is fixed in the shell.

[0009] In an embodiment, first pressure gauges are further arranged on the first pipeline and the second pipeline; second pressure gauges are connected to the shell; pressure reducers are further arranged on the first pipeline and the second pipeline, and pressure reducer valves are arranged on the pressure reducers.

[0010] In an embodiment, a vacuum chamber is connected to the shell through a third pipeline at the end away from the interface between the first pipeline and the shell, a third valve and a pressure reducer are arranged on the third pipeline, and a pressure reducer valve is arranged on the pressure reducer.

[0011] In an embodiment, the baffle and the grid plate are coaxially arranged, the center of the grid plate is solid, and the baffle is rotatably connected with the grid plate through a bearing.

[0012] In an embodiment, the sealing plate area is provided with a sealing strip for plugging the air outlet area.

[0013] In an embodiment, the support is a support rod with a rectangular cross section.

[0014] In an embodiment, the part where the support rod is connected with the elastic element is solid, and the end away from the elastic element is hollow.

[0015] In an embodiment, the elastic element is a spring.

[0016] In an embodiment, an axial straight groove is arranged on the inner circumferential surface of the cylindrical inner cavity, and a sliding block is fixedly arranged on the outer circumferential surface of the grid plate, and the sliding block is sealed and slides in the straight groove.

[0017] The utility model discloses relative to prior art has obtained following technical effect:

[0018] The utility model discloses through the setting of grid plate and baffle, under the action of gas pressure, the guidance of sliding block is carried out through spiral groove, makes baffle can rotate and remove, thereby making gas can along with grid plate rotation injection, and with the second gas of import is mixed, and the mixture of gas is more sufficient, thereby improve the accuracy of experimental data. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment, and obviously, the drawing in the following description is only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0020] Figure 1 It is the structure schematic drawing of propellant characteristic test device in the embodiment of the utility model;

[0021] Figure 2 It is the structure schematic drawing of gas mixer in the embodiment of the utility model;

[0022] Figure 3 It is Figure 2 It is the local amplification schematic drawing of part A;

[0023] Figure 4 It is the structure schematic drawing of baffle in the embodiment of the utility model;

[0024] Figure 5 It is the structure schematic drawing of grid plate in the embodiment of the utility model.

[0025] In the drawing: 1-first pressure bottle, 2-second pressure bottle, 3-gas mixer, 4-outer shell, 5-baffle, 6-grid plate, 7-elastic element, 8-support, 9-first cavity, 10-second cavity, 11-grid area, 12-plate area, 13-first through hole, 14-gas outlet area, 15-second through hole, 16-spiral groove, 17-sliding block, 18-first pipeline, 19-first valve, 20-second pipeline, 21-second valve, 22-first pressure gauge, 23-second pressure gauge, 24-pressure reducer, 25-pressure reducer valve, 26-straight groove, 27-sliding block, 28-third pipeline, 29-vacuum chamber, 30-third valve. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of the utility model.

[0027] The utility model discloses a propellant characteristic test device, to solve the prior art problem, make the gas can be mixed fully, improve the accuracy of experimental data.

[0028] In order to make the above-mentioned purpose, feature and advantage of the utility model more apparent, easy to understand, the utility model will be further detailed below with reference to the drawings and specific embodiment.

[0029] As Figures 1-5 The utility model discloses a propellant characteristic test device, including first pressure bottle 1, second pressure bottle 2 and gas mixer 3, gas mixer 3 includes shell 4, baffle 5, grid plate 6, elastic element 7 and support 8, be equipped with cylindrical inner chamber in shell 4, grid plate 6 is sealed in the cylindrical inner chamber and slides, and grid plate 6 divides the cylindrical inner chamber into first chamber 9 and second chamber 10, and grid plate 6 includes the grid area 11 and the sealing plate area 12 of distribution periphery, be equipped with a plurality of first through -hole 13 on grid area 11, baffle 5 sets up in one side (in first chamber 9) of grid plate 6 and is connected with grid plate 6 rotation, baffle 5 has the gas outlet area 14 corresponding with sealing plate area 12, be equipped with a plurality of second through -hole 15 on gas outlet area 14, be equipped with helical groove 16 on the inner periphery of cylindrical inner chamber, the outer periphery of baffle 5 is fixedly equipped with sliding block 17, and sliding block 17 is slidably arranged in helical groove 16, and elastic element 7 sets up in one side (in second chamber 10) of grid plate 6 away from baffle 5, and one end of elastic element 7 is connected with grid plate 6, and the other end is connected with support 8, and support 8 is fixed in shell 4, and first pressure bottle 1 is connected with first chamber 9 through first pipeline 18, and is equipped with first valve 19 on first pipeline 18, and second pressure bottle 2 is connected with second chamber 10 through second pipeline 20, and is equipped with second valve 21 on second pipeline 20.

[0030] In the embodiment, first pipeline 18 and second pipeline 20 are also equipped with first pressure gauge 22, for measuring and displaying the pressure level of gas in first pressure bottle 1 and second pressure bottle 2, to ensure that the safety pressure range is not exceeded when using gas. The shell 4 is connected with the second pressure gauge 23, and the second pressure gauge 23 is used for measuring the mixed gas pressure in the second chamber 10.

[0031] In the embodiment, the first pipeline 18 and the second pipeline 20 are further provided with a pressure reducer 24, and the pressure reducer 24 is provided with a pressure reducer valve 25 for stabilizing and regulating the output gas pressure.

[0032] In the embodiment, the shell 4 is communicated with a vacuum chamber 29 through a third pipeline 28 away from the end of the first pipeline 18 and the interface of the shell 4, and the third pipeline 28 is provided with a third valve 30 and a pressure reducer 24, and the pressure reducer 24 is provided with a pressure reducer valve 25. The vacuum chamber 29 is used to simulate a real low-pressure environment and drive the mixed gas to flow, the third valve 30 is used to control the discharge timing, and the pressure reducer 24 guarantees the pressure stability and equipment safety, and the three cooperate to improve the reliability and data accuracy of the experiment.

[0033] In the embodiment, the partition plate 5 is coaxially arranged with the grid plate 6, and the center of the grid plate 6 is solidly arranged. The partition plate 5 is rotationally connected with the grid plate 6 through a bearing.

[0034] In the embodiment, the sealing plate area 12 is provided with a sealing strip for plugging the gas outlet area 14. Through the arrangement of the sealing strip, the gas outlet area 14 can be completely plugged.

[0035] In the embodiment, the support 8 is a support rod with a rectangular cross-sectional shape. The part of the support rod connected with the elastic element 7 is solidly arranged, and the end away from the elastic element 7 is hollowly arranged to avoid forming a blockage when the gas is mixed.

[0036] In the embodiment, the elastic element 7 is a spring, which is simple in structure and convenient to install.

[0037] In the embodiment, the inner circumferential surface of the cylindrical inner cavity is provided with an axial straight groove 26, and the outer circumferential surface of the grid plate 6 is fixedly provided with a sliding block 27. The sliding block 27 is sealed and slides in the straight groove 26, and the straight groove 26 plays a guiding and limiting role on the sliding block 27, so that the grid plate 6 cannot rotate in the circumferential direction and can only move in the axial direction.

[0038] In use, the first pressure bottle 1 stores krypton, the second pressure bottle 2 stores nitrogen, the partition plate 5 and the grid plate 6 are located at the initial position, the gas outlet area 14 is shielded by the sealing plate area 12, the first valve 19 is opened, the krypton in the first pressure bottle 1 is sprayed into the first cavity 9 in the gas mixer 3 along the first pipeline 18, the krypton is sprayed to the partition plate 5 to overcome the force of the spring, so that the partition plate 5 moves towards the spring, and the sliding block 17 on the outer circumferential surface of the partition plate 5 slides in the spiral groove 16, so that the partition plate 5 moves and rotates towards the spring, when the partition plate 5 rotates, the gas outlet area 14 is dislocated with the sealing plate area 12, so that the krypton is sprayed and rotated along the grid area 11, the purpose of spraying and rotating the krypton along the grid plate 6 is realized, at the same time, the second valve 21 is opened, so that the nitrogen stored in the second pressure bottle 2 is sprayed into the second cavity 10 of the gas mixer 3 along the second pipeline 20, and is fully mixed with the sprayed krypton, at this time, the gas flow discharged through the gas outlet area 14 is greater than the gas flow sprayed through the first pipeline 18 connected with the first pressure bottle 1, until the volume of the krypton in the first cavity 9 is small, at this time, the grid plate 6 is moved away from the support 8 under the action of the spring, the grid plate 6 moves and drives the partition plate 5 to move, until the partition plate 5 is reset, after the rotation and movement of the partition plate 5 are reset, the gas outlet area 14 is shielded and plugged by the sealing plate area 12. Through the arrangement of the partition plate 5, the grid plate 6, the gas outlet area 14 and the sealing plate area 12, the two kinds of gases can be fully mixed, the problem that the experimental data is not accurate due to insufficient gas mixing is solved, and the accuracy of the experimental data is improved.

[0039] The principle and implementation mode of the utility model are described by using specific examples in the utility model, and the above embodiment is only used for helping to understand the method and core idea of the utility model; meanwhile, according to the idea of the utility model, the specific implementation mode and application range will be changed by the general technical personnel in the field. In conclusion, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A propellant property testing apparatus, characterized by: The gas mixer comprises a first pressure bottle, a second pressure bottle and a gas mixer, the gas mixer comprises a shell, a partition plate and a grid plate, the shell is internally provided with a cylindrical inner cavity, the grid plate is sealingly and slidably arranged in the cylindrical inner cavity, the grid plate divides the cylindrical inner cavity into a first cavity and a second cavity, the grid plate comprises a grid area and a sealing plate area which are distributed in a circumferential direction, the grid area is provided with a plurality of first through holes, the partition plate is arranged on one side of the grid plate and rotationally connected with the grid plate, the partition plate is provided with a gas outlet area corresponding to the sealing plate area, the gas outlet area is provided with a plurality of second through holes, an inner circumferential surface of the cylindrical inner cavity is provided with a spiral groove, an outer circumferential surface of the partition plate is fixedly provided with a sliding block, the sliding block is slidably arranged in the spiral groove, the first pressure bottle is connected with the first cavity through a first pipeline, the first pipeline is provided with a first valve, the second pressure bottle is connected with the second cavity through a second pipeline, the second pipeline is provided with a second valve.

2. The propellant property test apparatus according to claim 1, characterized by: The gas mixer further comprises an elastic element and a support, the elastic element is arranged on a side of the grid plate away from the partition plate, one end of the elastic element is connected with the grid plate, and the other end of the elastic element is connected with the support, and the support is fixedly arranged in the shell.

3. The propellant property test apparatus according to claim 1, characterized by: First pressure gauges are further arranged on the first pipeline and the second pipeline; second pressure gauges are connected with the shell; and pressure reducers are further arranged on the first pipeline and the second pipeline, and the pressure reducers are provided with pressure reducer valves.

4. The propellant property test apparatus according to claim 1, characterized by: One end of the shell away from an interface between the first pipeline and the shell is connected with a vacuum chamber through a third pipeline, the third pipeline is provided with a third valve and a pressure reducer, and the pressure reducer is provided with a pressure reducer valve.

5. The propellant property test apparatus of claim 1, wherein: The partition plate and the grid plate are coaxially arranged, the center of the grid plate is solid, and the partition plate is rotationally connected with the grid plate through a bearing.

6. The propellant property test apparatus of claim 1, wherein: The sealing plate area is provided with a sealing strip for plugging the gas outlet area.

7. The propellant property test apparatus according to claim 2, characterized by: The support is a support rod with a rectangular cross section.

8. The propellant property test apparatus according to claim 7, characterized by: The part, where the support rod is connected with the elastic element, is solid, and one end of the support rod away from the elastic element is hollow.

9. The propellant property test apparatus of claim 2, wherein: The elastic element is a spring.

10. The propellant property test apparatus of claim 1, wherein: An axial straight groove is arranged on an inner circumferential surface of the cylindrical inner cavity, and a sliding block is fixedly arranged on an outer circumferential surface of the grid plate, and the sliding block is sealingly and slidably arranged in the straight groove.

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