Three-way control air valve for satellite reaction flywheel

Abstract

The utility model relates to a three-way control air valve for a satellite reaction flywheel, which relates to the technical field of spacecraft attitude control and comprises a cap, a threaded adapter, a three-way device and an ejector pin. The side face of the three-way device is connected with the threaded adapter, and the ejector pin is inserted into the three-way device in a penetrating mode. A connecting pipe is arranged at the end, away from the tip of the ejector pin, of the three-way device, and a first external thread is arranged on the side face of the connecting pipe. A first internal thread matched with the first external thread is arranged on the inner wall of the cap, and the cap is connected with the connecting pipe through the first internal thread; when the cap is rotated to move forwards on the connecting pipe, the cap pushes the tip of the ejector pin to move forwards. The device has the advantages that manual control is more convenient, and the air flow can be better controlled; the gas tightness is better, and gas circulation can be better guaranteed; most of the body parts are machined, so that the precision and the stability are ensured, and the stability is good.

Description

Technical Field

[0001] This utility model relates to the field of spacecraft attitude control technology, and in particular to a three-way control valve for a satellite reaction wheel. Background Technology

[0002] The reaction flywheel is the core actuator of the satellite attitude control system, achieving precise adjustment of the satellite's three-axis attitude through changes in the angular momentum of a high-speed rotor. Its performance directly affects the success or failure of satellite missions such as Earth observation, communication pointing, and orbit maintenance. To ensure the stability of the chemical and physical properties inside the reaction flywheel, the internal space must be evacuated and filled with nitrogen. How to reasonably and conveniently control the gas flow rate and ensure the gas pressure remains within the specified range is a current technical challenge.

[0003] In existing technology, the operator uses a water pipe sealing ring and a plastic head to control the retraction of the ejector pin, thereby controlling the valve core on the reaction flywheel.

[0004] In existing technologies, the ground assembly of the reaction flywheel circuit board is done manually, which presents the following problems:

[0005] 1. Pressing the gas valve for a long time can cause finger soreness, making it difficult to control the gas flow.

[0006] 2. The original connector has a risk of airtightness and is easily damaged.

[0007] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content

[0008] The purpose of this invention is to provide a three-way control valve for a satellite reaction flywheel, which is easier to operate manually and can better control the airflow.

[0009] This utility model provides a three-way control valve for a satellite reaction flywheel, including a cap, a threaded adapter, a three-way valve, and a pin; the threaded adapter is connected to the side of the three-way valve, and the pin is inserted through the three-way valve; a connecting tube is provided at the end of the three-way valve away from the tip of the pin, and the side of the connecting tube is provided with a first external thread; a first internal thread that mates with the first external thread is provided on the inner wall of the cap, and the cap is connected to the connecting tube through the first internal thread; when the cap is rotated and the connecting tube moves forward, the cap will push the tip of the pin forward.

[0010] By adopting the above technical solution, the retraction amount of the ejector pin can be controlled by rotating the cap, which is more convenient for manual operation and allows for better control of the air flow.

[0011] Furthermore, the three-way control valve also includes a rubber sealing ring, and a sealing groove is provided on the side of the connecting pipe, with the rubber sealing ring fitted in the sealing groove; when the cap is connected to the connecting pipe, the rubber sealing ring is pressed against the inner wall of the cap and the side of the connecting pipe.

[0012] Furthermore, the threaded adapter includes a baffle, an upper adapter connector, and a lower adapter connector. The upper and lower adapter connectors are fixedly connected to both ends of the baffle, and the upper and lower adapter connectors communicate with each other. A connecting groove is provided on the side of the three-way connector, and a connecting hole communicating with the interior of the three-way connector is provided at the bottom of the connecting groove. A second internal thread is provided on the inner wall of the connecting groove, and a second external thread is provided on the side of the lower adapter connector, with the second external thread connecting to the second internal thread. A third external thread is provided on the side of the upper adapter connector.

[0013] Furthermore, a positioning tube is fixedly connected to one end of the three-way connector away from the connecting tube, and a pin sliding tube is fixed inside the positioning tube. The tip of the pin protrudes from the opening of the pin sliding tube, and a fourth external thread is provided on the side of the pin sliding tube.

[0014] The three-way control valve for satellite reaction flywheels of this invention allows for control of the retraction of the ejector pin by rotating the cap, making it easier for manual operation and providing better control of airflow. In addition, compared with existing solutions, this invention has better airtightness, ensuring better gas flow. Most of the main body components of this invention are machined, ensuring precision and stability, and providing good stability. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of a three-way control valve for a satellite reaction flywheel provided in an embodiment of this utility model.

[0016] Figure 2 for Figure 1 A schematic diagram showing the disassembled structure of the three-way control valve used in the satellite reaction flywheel.

[0017] Figure 3 for Figure 1 A schematic diagram of the cap structure for the three-way control valve used in the satellite reaction flywheel.

[0018] Figure 4 for Figure 1 A schematic diagram of the structure of a three-way valve for a three-way control air valve used in a satellite reaction flywheel.

[0019] The reference numerals and components involved in the accompanying drawings are shown below:

[0020] 100, Cap 110, First Internal Thread 200, Thread Converter

[0021] 210, baffle plate 220, upper conversion connector 230, lower conversion connector

[0022] 240, second external thread 250, third external thread 300, tee

[0023] 310, connecting pipe 320, first external thread 330, sealing groove

[0024] 340, connecting groove 350, connecting hole 360, second internal thread

[0025] 370, Positioning tube 380, Ejector pin sliding tube 390, Fourth external thread

[0026] 400, ejector pin 500, rubber sealing ring Detailed Implementation

[0027] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0028] The terms "first," "second," "third," "fourth," etc., used in the specification and claims of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0029] Example 1

[0030] Figure 1 This is a schematic diagram of the structure of a three-way control valve for a satellite reaction flywheel provided in an embodiment of the present invention. Figure 2 for Figure 1 A schematic diagram showing the disassembled structure of the three-way control valve used in the satellite reaction flywheel. Figure 3 for Figure 1 A schematic diagram of the cap structure for the three-way control valve used in satellite reaction flywheels. Figure 4 for Figure 1 A schematic diagram of the three-way valve for the three-way control air valve used in satellite reaction flywheels. Please refer to... Figure 1 , Figure 2 , Figure 3 , Figure 4The present invention provides a three-way control valve for a satellite reaction flywheel, characterized in that it includes a cap 100, a threaded adapter 200, a three-way valve 300, and a pin 400; the threaded adapter 200 is connected to the side of the three-way valve 300, and the pin 400 is inserted through the three-way valve 300; a connecting tube 310 is provided at one end of the three-way valve 300 away from the tip of the pin 400, and a first external thread 320 is provided on the side of the connecting tube 310; a first internal thread 110 is provided on the inner wall of the cap 100 to cooperate with the first external thread 320, and the cap 100 is connected to the connecting tube 310 through the first internal thread 110; when the cap 100 is rotated and moves forward in the connecting tube 310, the cap 100 will push the tip of the pin 400 forward.

[0031] It should be noted that the three-way control valve of this utility model can control the retraction of the pin 400 by rotating the cap 100, which is more convenient for manual operation and can better control the air flow. In addition, compared with the existing solution, this utility model has better airtightness and can better ensure the flow of gas. Most of the main body parts included in this utility model are machined, ensuring precision and stability, and good stability.

[0032] Further reference Figure 2 , Figure 4 The three-way control valve of this utility model also includes a rubber sealing ring 500. A sealing groove 330 is provided on the side of the connecting pipe 310, and the rubber sealing ring 500 is sleeved in the sealing groove 330. When the cap 100 is connected to the connecting pipe 310, the rubber sealing ring 500 is pressed against the inner wall of the cap 100 and the side of the connecting pipe 310.

[0033] It should be noted that the design of the rubber sealing ring 500 prevents airflow from leaking through the three-way valve 300 from the cap 100.

[0034] Further reference Figure 2 , Figure 4The threaded adapter 200 of this utility model includes a baffle 210, an upper adapter tube 220, and a lower adapter tube 230. The upper adapter tube 220 and the lower adapter tube 230 are fixedly connected to both ends of the baffle 210, and the upper adapter tube 220 and the lower adapter tube 230 are in communication. A connecting groove 340 is provided on the side of the three-way connector 300, and a connecting hole 350 communicating with the inside of the three-way connector 300 is provided at the bottom of the connecting groove 340. A second internal thread 360 is provided on the inner wall of the connecting groove 340, and a second external thread 240 is provided on the side of the lower adapter tube 230. The second external thread 240 is connected to the second internal thread 360. A third external thread 250 is provided on the side of the upper adapter tube 220.

[0035] Further reference Figure 4 In this invention, a positioning tube 370 is fixedly connected to one end of the three-way connector 300 away from the connecting tube 310. A pin sliding tube 380 is fixed inside the positioning tube 370. The tip of the pin passes through the opening of the pin sliding tube 380. A fourth external thread 390 is provided on the side of the pin sliding tube 380.

[0036] As can be seen from the above description, the advantages of this utility model are:

[0037] The three-way control valve for satellite reaction flywheels of this invention allows for control of the retraction of the ejector pin by rotating the cap, making it easier for manual operation and providing better control of airflow. In addition, compared with existing solutions, this invention has better airtightness, ensuring better gas flow. Most of the main body components of this invention are machined, ensuring precision and stability, and providing good stability.

[0038] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A three-way control gas valve for a satellite reaction flywheel, characterized by, The cap (100), the threaded adapter (200), the tee (300) and the needle (400) are included. The threaded adapter (200) is connected to the side of the tee (300), and the needle (400) is inserted through the tee (300). A connecting pipe (310) is arranged on the end of the tee (300) away from the needle tip of the needle (400), and a first external thread (320) is arranged on the side of the connecting pipe (310); a first internal thread (110) matched with the first external thread (320) is arranged on the inner wall of the cap (100), and the cap (100) is connected to the connecting pipe (310) through the first internal thread (110). When the cap (100) is rotated to move forward on the connecting pipe (310), the cap (100) pushes the needle tip of the needle (400) to move forward.

2. The three-way control gas valve for a satellite flywheel reaction wheel of claim 1, wherein, The tee control valve further comprises a rubber sealing ring (500), and a sealing groove (330) is arranged on the side of the connecting pipe (310), and the rubber sealing ring (500) is sleeved in the sealing groove (330). When the cap (100) is connected to the connecting pipe (310), the rubber sealing ring (500) is pressed on the inner wall of the cap (100) and the side of the connecting pipe (310).

3. The three-way control gas valve for a satellite flywheel reaction wheel of claim 1, wherein, The threaded adapter (200) comprises a baffle (210), an upper end adapter (220) and a lower end adapter (230), the baffle (210) is fixedly connected with the upper end adapter (220) and the lower end adapter (230) at both ends respectively, and the upper end adapter (220) and the lower end adapter (230) are communicated. A connecting groove (340) is arranged on the side of the tee (300), a connecting hole (350) communicated with the inside of the tee (300) is arranged at the bottom of the connecting groove (340), a second internal thread (360) is arranged on the inner wall of the connecting groove (340), and a second external thread (240) is arranged on the side of the lower end adapter (230), and the second external thread (240) is connected to the second internal thread (360). A third external thread (250) is arranged on the side of the upper end adapter (220).

4. The three-way control gas valve for a satellite flywheel reaction wheel of claim 1, wherein, A positioning pipe (370) is fixedly connected to the end of the tee (300) away from the connecting pipe (310), a needle sliding pipe (380) is fixedly arranged in the positioning pipe (370), the tip of the needle is arranged to pass through the pipe opening of the needle sliding pipe (380), and a fourth external thread (390) is arranged on the side of the needle sliding pipe (380).

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