Automatic testing device of fluid control device

Abstract

The utility model provides an automatic testing device for a fluid control device, which comprises a testing platform, a sealing element, a fluid supply pipeline, a lifting mechanism and a testing mechanism, and is characterized in that the testing platform is provided with a mounting base, and the fluid control device is mounted on the mounting base and is communicated with the mounting base to realize positioning so as to ensure the accuracy and reliability of automatic testing; the lifting mechanism is used for controlling the fluid supply pipeline to move between a first position and a second position relative to the test platform, the fluid supply pipeline is communicated with the fluid control device at the first position and is hermetically connected with the fluid control device through a sealing element, and the fluid supply pipeline is far away from the fluid control device at the second position; and the testing mechanism is used for testing the fluid output by the mounting base so as to test the performance of the fluid control device. According to the automatic testing device, automatic testing of the fluid control device can be achieved, the problem that an existing manual testing process is tedious is effectively solved, the labor cost and the error rate are reduced, and the testing efficiency and the testing precision are improved.

Description

Technical Field

[0001] The present application relates to the technical field of testing devices, and in particular to an automatic testing device for a fluid control device. Background Art

[0002] The fuel system is an important part of the aircraft engine and auxiliary power system, and its components directly affect the safety and performance of the engine and auxiliary power system. The fuel system usually includes fuel regulating devices such as fuel flow regulators, throttles and diverter valves, which play a role in regulating and controlling fuel flow and pressure. These fuel regulating devices, on the one hand, serve as the actuators of the main control quantity fuel, and on the other hand, serve as the mechanical hydraulic control backup of the aircraft engine digital control system. Their performance directly affects the working state of the aircraft engine and auxiliary power system, and even affects the safety and reliability of the aircraft. Therefore, performance testing of fuel regulating devices is crucial.

[0003] However, the current performance test of fuel regulating devices generally uses manual testing equipment, which requires manual testing by humans, including a series of operations such as manual clamping, sealing, fuel supply, and testing. The manual testing process is cumbersome and prone to errors, which affects the test accuracy and results, is time-consuming and labor-intensive, and has low test efficiency.

[0004] Therefore, how to effectively improve the existing problems of using manual testing devices to perform performance tests on fuel regulating devices, such as cumbersome manual testing process and low testing efficiency, is a technical problem that needs to be urgently solved by technical personnel in this field. Utility Model Content

[0005] In view of this, the present application provides an automatic testing device for a fluid control device, aiming to effectively solve the problems of cumbersome manual testing process and low testing efficiency in the performance testing of fuel regulating devices using the above-mentioned manual testing device.

[0006] The present application provides an automatic testing device for a fluid control device, comprising a testing platform, a sealing member, a fluid supply pipeline, a lifting mechanism and a testing mechanism, wherein the testing platform is provided with a mounting base, the fluid control device is mounted on the mounting base and is connected to the mounting base, the lifting mechanism is used to control the fluid supply pipeline to move between a first position and a second position relative to the testing platform, when in the first position, the fluid supply pipeline is connected to the fluid control device and is sealed by the sealing member, and when in the second position, the fluid supply pipeline is away from the fluid control device, and the testing mechanism is used to test the fluid output through the mounting base.

[0007] In one embodiment, a connector is provided at one end of the fluid supply pipeline close to the test platform, and the connector is used to communicate with the fluid control device and be sealed through the seal; the connector is provided with a first flow channel connected to the fluid supply pipeline, the fluid control device is provided with a second flow channel, and the mounting base is provided with a third flow channel, and the first flow channel, the second flow channel and the third flow channel are connected in sequence.

[0008] In one embodiment, the fluid control device is a throttle nozzle, the sealing element is a sealing sleeve, the sealing sleeve is sleeved outside the throttle nozzle and installed on the mounting base, and the connector is sealed in cooperation with the sealing sleeve.

[0009] In one embodiment, one end of the first flow channel close to the throttle nozzle expands outward to form a first connecting inclined wall, and a protrusion is provided on the outer wall of the sealing sleeve close to the connecting head, and the protrusion forms a second connecting inclined wall that seals with the first connecting inclined wall.

[0010] In one embodiment, the sealing sleeve is provided with a sleeve cavity at one end close to the connecting head, and a connecting port connected to the sleeve cavity at one end away from the connecting head, the throttle nozzle is interference fit in the sleeve cavity, and one end of the second flow channel is connected to the first flow channel, and the other end is connected to the third flow channel through the connecting port; the mounting base is provided with a mounting groove at one end close to the connecting head, the third flow channel passes through the bottom wall of the mounting groove, the sealing sleeve is sealingly connected to the mounting groove, and the connecting port is connected to the third flow channel.

[0011] In one embodiment, the fluid control device is a flow regulator, the sealing element is a sealing ring, the flow regulator is mounted on the mounting base, and the connector and the flow regulator are sealed together through the sealing ring.

[0012] In one embodiment, a connecting portion is provided on the outer wall of the flow regulator, a side of the connecting portion away from the connecting head is sealed and connected to the mounting base, and the sealing ring is sealingly fitted between the connecting portion and the connecting head.

[0013] In one embodiment, a first connecting groove is provided on a side of the connecting portion close to the connecting head, a second connecting groove is provided on a side of the connecting head close to the flow regulator, and the sealing ring is sealed between the first connecting groove and the second connecting groove.

[0014] In one embodiment, a rotating disk is further included. The rotating disk is rotatably mounted on the test platform. The rotating disk is provided with a plurality of test stations arranged at intervals along a circumferential direction. Each of the test stations can be used to test one of the fluid control devices.

[0015] In one embodiment, the rotating disk is provided with an outer circumference and at least one inner circumference provided inside the outer circumference, and a plurality of the testing stations are provided on the outer circumference and the inner circumference respectively.

[0016] In summary, the present application provides an automatic testing device for a fluid control device, including a testing platform, a seal, a fluid supply pipeline, a lifting mechanism and a testing mechanism. The testing platform is provided with a mounting base, the fluid control device is mounted on the mounting base and communicated with the mounting base to achieve positioning to ensure the accuracy and reliability of the automatic test. The lifting mechanism is used to control the fluid supply pipeline to move between a first position and a second position relative to the testing platform. In the first position, the fluid supply pipeline is communicated with the fluid control device and is sealed and connected through the seal. In the second position, the fluid supply pipeline is away from the fluid control device. The testing mechanism is used to test the fluid output through the mounting base, thereby achieving performance testing of the fluid control device. The present application can achieve automatic testing of the fluid control device through the automatic testing device, effectively solving the problem of the cumbersome existing manual testing process, reducing labor costs and error rates, and improving testing efficiency and testing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the automatic testing device of the fluid control device of the present application.

[0018] Figure 2 for Figure 1 Side view of the local structure of the automatic test device after some components are removed.

[0019] Figure 3 for Figure 1 A side cross-sectional view of the automatic test device with some components removed.

[0020] Figure 4 for Figure 3 Enlarged schematic diagram of part A.

[0021] Figure 5 for Figure 3 Schematic diagram of the enlarged portion B.

[0022] Figure 6 for Figure 1 A top view of the rotating disk of the automatic test device.

[0023] Figure 7 for Figure 1 Schematic diagram of the three-dimensional exploded view of the rotating disk of the automatic testing device.

[0024] Figure 8 for Figure 4 Exploded cross-sectional view of the center connector, sealing sleeve, throttle nozzle and mounting base.

[0025] Fig. 9 for Figure 5 Exploded cross-sectional view of the center connector, seal, flow conditioner, and mounting base.

[0026] Figure markings: 10-automatic testing device; 12-testing platform; 14-fluid supply pipeline; 16-lifting mechanism; 16a-driving cylinder; 16b-lifting arm; 20-mounting base; 20a-plug-in part; 20b-stop part; 22-rotating disk; 22a-outer circumference; 22b-inner circumference; 24-rotating motor; 26-testing station; 28-connector; 30-first flow channel; 32-second flow channel; 34-third flow channel; 36-throttle nozzle; 38-sealing sleeve; 40-first connecting inclined wall; 42-protrusion; 44-second connecting inclined wall; 46-sleeve cavity; 48-connecting port; 50-mounting groove; 52-flow regulator; 54-sealing ring; 56-connecting part; 58-first connecting groove; 60-second connecting groove. DETAILED DESCRIPTION

[0027] Before describing the embodiments in detail, it should be understood that the present application is not limited to the detailed structure or component arrangement described below or in the drawings in the present application. The present application may be an embodiment implemented in other ways. Moreover, it should be understood that the words and terms used herein are only used for descriptive purposes and should not be interpreted restrictively. The words "including", "comprising", "having" and the like used herein are meant to include the items listed thereafter, their equivalents and other additional items. In particular, when describing "a certain element", the present application does not limit the number of the element to one, but may also include multiple elements.

[0028] Please refer to Figure 1 As shown, the present application provides an automatic testing device 10 for a fluid control device, and the automatic testing device 10 is used to perform performance tests on the fluid control device, such as testing the pressure-flow curve of the fluid control device. The flow rate can be tested at a certain pressure to obtain a flow-time curve, or the pressure can be tested at a certain flow rate to obtain a pressure-time curve. The fluid control device is used to regulate and control the flow rate and pressure of the passing fluid according to the requirements of the control system. For example, the fluid control device is used in aircraft engines and auxiliary power systems. Therefore, the fluid control device plays a role in regulating and controlling the fuel flow rate and pressure. Correspondingly, the fluid used by the automatic testing device 10 during the test process is fuel. In other embodiments, according to the different uses and application fields of the fluid control device, the fluid can also be other fluids, such as lubricating oil, water, etc.

[0029] In the present application, the automatic testing device 10 includes a testing platform 12, a sealing member, a fluid supply pipeline 14, a lifting mechanism 16 and a testing mechanism (not shown in the figure), the lifting mechanism 16 is, for example, an automatic lifting electric cylinder, a mounting base 20 is provided on the testing platform 12, a fluid control device is mounted on the mounting base 20 and communicated with the mounting base 20, the lifting mechanism 16 is used to control the fluid supply pipeline 14 to move up and down between a first position and a second position relative to the testing platform 12, in the first position, the fluid supply pipeline 14 is communicated with the fluid control device and is sealed and connected through the sealing member, in the second position, the fluid supply pipeline 14 is away from the fluid control device, and the testing mechanism can be arranged at the flow channel outlet of the mounting base 20, for receiving and testing the fluid output through the mounting base 20. The present application can realize automatic testing of the fluid control device through the automatic testing device 10, effectively solve the problem of the cumbersome existing manual testing process, reduce labor costs and error rates, and improve testing efficiency and testing accuracy.

[0030] Preferably, please also refer to Figure 2 As shown, the lifting mechanism 16 can be installed and fixed on the test platform 12, or can be fixed by an external mechanism. The lifting mechanism 16 includes a driving cylinder 16a and a lifting arm 16b. The lifting arm 16b is drivingly connected to the driving cylinder 16a. The driving cylinder 16a is used to drive the lifting arm 16b to move up and down between the first position and the second position. The lifting arm 16b can be fixedly connected to the fluid supply pipeline 14 by clamping or screwing, so that the lifting arm 16b can drive the fluid supply pipeline 14 to move up and down. The test platform 12 can be arranged in the horizontal direction, and the fluid supply pipeline 14 is arranged perpendicular to the test platform 12.

[0031] The present application utilizes the mounting base 20 to position and connect the fluid control device to ensure the accuracy and reliability of the automatic test, and utilizes the lifting mechanism 16 to control the fluid supply pipeline 14 to move up and down. During the test, the lifting mechanism 16 controls the fluid supply pipeline 14 to move downward, and presses down the seal to contact and seal with the fluid control device and connect, thereby ensuring the airtightness between the fluid supply pipeline 14 and the fluid control device, and preventing the fluid from leaking from the connection between the fluid supply pipeline 14 and the fluid control device, and finally realizing the fluid supply pipeline 14 to input the fluid to the fluid control device and output it from the mounting base 20 to be tested by the testing mechanism, thereby achieving the effect of automatic oil supply and automatic testing, and then realizing the automatic testing of the fluid control device.

[0032] In the illustrated embodiment, please also refer to Figure 3 , Figure 6 and Figure 7As shown, the automatic testing device 10 also includes a rotating disk 22, which is, for example, circular, and rotatably mounted on the test platform 12. For example, a rotating motor 24 is provided at the bottom of the test platform 12, and the rotating motor 24 is connected to the rotating disk 22 so that the rotating motor 24 can drive the rotating disk 22. The rotating disk 22 is provided with a plurality of test stations 26 evenly spaced along the circumferential direction, and each test station 26 can be used to test a fluid control device, thereby realizing batch automatic testing of the fluid control device and improving the overall testing efficiency. The test station 26 is, for example, a hole structure, and the mounting base 20 can be designed as a T-shaped structure, including a plug-in portion 20a and a stopper 20b connected to one end of the plug-in portion 20a, and the diameter of the stopper 20b is larger than the diameter of the plug-in portion 20a. During installation, the plug-in portion 20a is plugged into the test station 26, and the stopper 20b stops on the table surface around the test station 26 to realize the positioning of the mounting base 20. Preferably, the mounting base 20 is detachably mounted on the test station 26, so that the mounting base 20 can be easily replaced after the test is completed. In other embodiments, the mounting base 20 can also be fixedly mounted on the test station 26, and only the fluid control device can be replaced.

[0033] The fluid supply pipeline 14 has a corresponding test position on the rotating disk 22. The rotating motor 24 drives the rotating disk 22 to rotate at a uniform and controllable speed. After rotating to a test position corresponding to a test station 26 and the fluid supply pipeline 14, the lifting mechanism 16 controls the fluid supply pipeline 14 to move downward to the first position, performs contact sealing, oil supply, testing and other operations on the fluid control device at the test position, and completes the automatic test of the fluid control device. The lifting mechanism 16 controls the fluid supply pipeline 14 to move upward to the second position; then the rotating disk 22 rotates again, so that the fluid control device of another test station 26 rotates to the test position corresponding to the fluid supply pipeline 14, and the lifting mechanism 16 controls the fluid supply pipeline 14 to move downward to the first position again to automatically test another fluid control device at the corresponding test position, and so on, until the automatic test of the fluid control devices of all test stations 26 on the entire rotating disk 22 is completed. The automatic alternating test during the test process is realized by rotating the rotating disk 22, which can effectively solve the problem of low efficiency of existing single-piece testing and improve the overall testing efficiency.

[0034] In some embodiments, the mounting base 20, the seal and the fluid control device are installed as an integral component. After the automatic test is completed, the integral component is removed from the test station 26 and replaced with a new integral component to be tested to automatically test the fluid control device therein.

[0035] In other embodiments, the seal and the fluid control device can also be treated as an integral component, and the mounting base 20 is installed on the test station 26 without moving. After the automatic test is completed, the integral component is removed from the mounting base 20 and replaced with a new integral component to be tested to automatically test the fluid control device therein.

[0036] In other embodiments, the mounting base 20 and the seal remain in their original positions, and after the automatic test is completed, the fluid control device is directly removed from the mounting base 20 or the seal, and a new fluid control device to be tested is installed and replaced for automatic testing.

[0037] In the embodiment shown, Figure 6 and Figure 7 As shown, the rotating disk 22 is provided with an outer circumference 22a and at least one inner circumference 22b provided inside the outer circumference 22a, and a plurality of test stations 26 are provided on the outer circumference 22a and the inner circumference 22b, respectively. Preferably, the inner circumference 22b is cocentrically arranged with the outer circumference 22a, the plurality of test stations 26 on the outer circumference 22a are evenly spaced, and the plurality of test stations 26 on the inner circumference 22b are evenly spaced, for example, 20 test stations 26 on the inner circumference 22b and the outer circumference 22a can be provided, respectively, and each test station 26 on the outer circumference 22a and the corresponding test station 26 on the inner circumference 22b are located in the same diameter direction of the rotating disk 22. The outer circumference 22a is configured with at least one lifting mechanism 16 and corresponding fluid supply pipelines 14, testing mechanisms and other related components to test the fluid control devices on the outer circumference 22a; the inner circumference 22b is configured with at least one lifting mechanism 16 and corresponding fluid supply pipelines 14, testing mechanisms and other related components to test the fluid control devices on the inner circumference 22b. This arrangement allows the fluid control devices on the outer circumference 22a and the inner circumference 22b to be automatically tested in batches at the same time, further improving the testing efficiency.

[0038] Among them, the fluid control device on the outer circumference 22a and the fluid control device on the inner circumference 22b can be the same or different. In this embodiment, the fluid control device on the outer circumference 22a is different from the fluid control device on the inner circumference 22b. For example, the fluid control device on the outer circumference 22a is a flow regulator, and the fluid control device on the inner circumference 22b is a throttle nozzle, thereby realizing batch automatic testing of different fluid control devices at the same time and realizing test diversification.

[0039] In other embodiments, it can also be designed that the outer circumference 22a and the inner circumference 22b share a lifting mechanism, and the lifting mechanism can simultaneously control the automatic lifting of at least two fluid supply pipelines, one of which supplies oil to the fluid control device on the outer circumference 22a, and the other fluid supply pipeline supplies oil to the fluid control device on the inner circumference 22b.

[0040] Further, in the illustrated embodiment, please also refer to Figure 4 and Figure 5 As shown, a connector 28 is provided at one end of the fluid supply pipeline 14 close to the test platform 12, and the connector 28 is used to communicate with the fluid control device and be sealed and connected through a seal; the connector 28 is provided with a first flow channel 30 connected to the fluid supply pipeline 14, the fluid control device is provided with a second flow channel 32, and the mounting base 20 is provided with a third flow channel 34. When the fluid supply pipeline 14 moves downward to the first position, the first flow channel 30, the second flow channel 32 and the third flow channel 34 are connected in sequence, and the fluid supply pipeline 14 supplies oil and flows out through the first flow channel 30, the second flow channel 32 and the third flow channel 34 to be received by the testing organization and tested.

[0041] Please also refer to Figure 4 and Figure 8 As shown, the fluid control device can be a throttle nozzle 36, and the sealing member is a sealing sleeve 38. The sealing sleeve 38 is made of, for example, a soft rubber material. The sealing sleeve 38 is sleeved on the outside of the throttle nozzle 36 and installed on the mounting base 20. The connector 28 is sealed with the sealing sleeve 38. Specifically, the end of the first flow channel 30 close to the throttle nozzle 36 expands outward to form a first connecting oblique wall 40. A protrusion 42 is provided on the outer wall of the sealing sleeve 38 close to the connector 28. The protrusion 42 is formed with a second connecting oblique wall 44 that is sealed with the first connecting oblique wall 40. The protrusion 42 is designed to be triangular, for example. When the connector 28 moves downward to the first position, the first connecting oblique wall 40 presses down the second connecting oblique wall 44 to form a sealing effect, thereby achieving the purpose of automatic sealing and preventing fluid leakage at the connection between the throttle nozzle 36 and the connector 28.

[0042] The sealing sleeve 38 is provided with a sleeve cavity 46 at one end close to the connector 28, and a connecting port 48 communicating with the sleeve cavity 46 at one end away from the connector 28. The throttle nozzle 36 is interference-fitted in the sleeve cavity 46 to automatically seal the side of the throttle nozzle 36 and improve the sealing effect. One end of the second flow channel 32 is communicated with the first flow channel 30, and the other end is communicated with the third flow channel 34 through the connecting port 48. Preferably, when the connector 28 moves downward to the first position, the corresponding end of the throttle nozzle 36 extends into the first flow channel 30. The mounting base 20 is provided with a mounting groove 50 at one end close to the connector 28, and the third flow channel 34 runs through the bottom wall of the mounting groove 50. One end of the sealing sleeve 38 is sealed and connected in the mounting groove 50, so that a sealing effect is formed between the throttle nozzle 36 and the mounting base 20, and the throttle nozzle 36 is positioned at the same time to ensure the accuracy and reliability of the automatic test, and the connecting port 48 is docked and communicated with the third flow channel 34.

[0043] Please also refer to Figure 5 and Fig. 9 As shown, the fluid control device can be a flow regulator 52, the sealing member is a sealing ring 54, the flow regulator 52 is mounted on the mounting base 20, and the connector 28 and the flow regulator 52 are sealed and matched through the sealing ring 54. Specifically, a connecting portion 56 is provided on the outer wall of the flow regulator 52, and the side of the connecting portion 56 away from the connector 28 is sealed and connected to the mounting base 20 to ensure the sealing effect between the flow regulator 52 and the mounting base 20, and the sealing ring 54 is sealed and matched between the connecting portion 56 and the connector 28 to ensure the sealing effect between the flow regulator 52 and the connector 28, so as to prevent fluid leakage at the connection between the flow regulator 52 and the connector 28. Preferably, when the flow regulator 52 is installed on the mounting base 20, the flow regulator 52 is located at one end of the connecting portion 56 close to the mounting base 20 and extends into the third flow channel 34, so that the second flow channel 32 is connected to the third flow channel 34, and the outer wall of the flow regulator 52 located at one end of the connecting portion 56 close to the mounting base 20 is sealed and connected to the inner wall surface of the third flow channel 34, thereby improving the sealing effect; at the same time, the flow regulator 52 is positioned to ensure the accuracy and reliability of the automatic test. When the connector 28 moves downward to the first position, the flow regulator 52 is located at one end of the connecting portion 56 close to the connecting portion 28 and extends into the first flow channel 30, so that the first flow channel 30 is connected to the second flow channel 32, and the outer wall of the flow regulator 52 is located at one end of the connecting portion 56 close to the connecting portion 28 and is sealed with the inner wall surface of the first flow channel 30 to improve the sealing effect; at the same time, the end wall of the connecting head 28 is squeezed on the side of the connecting portion 56 through the sealing ring 54, thereby realizing a sealed connection between the flow regulator 52 and the connecting head 28, achieving the effect of automatic sealing of the oil supply.

[0044] Further, a first connection groove 58 is provided on one side of the connection portion 56 close to the connection head 28, and a second connection groove 60 is provided on one side of the connection head 28 close to the flow regulator 52. The first connection groove 58 corresponds to the second connection groove 60, and the sealing ring 54 is sealed between the first connection groove 58 and the second connection groove 60. For example, when the connection head 28 moves downward to the first position, a part of the sealing ring 54 is pressed and fitted in the first connection groove 58, and another part is pressed and fitted in the second connection groove 60, thereby realizing a sealed connection between the flow regulator 52 and the connection head 28. The sealing ring 54 can be fixedly connected to the first connection groove 58, and can also be fixedly connected to the second connection groove 60.

[0045] In summary, the present application provides an automatic testing device for a fluid control device, including a testing platform, a seal, a fluid supply pipeline, a lifting mechanism and a testing mechanism. The testing platform is provided with a mounting base, the fluid control device is mounted on the mounting base and communicated with the mounting base to achieve positioning to ensure the accuracy and reliability of the automatic test. The lifting mechanism is used to control the fluid supply pipeline to move between a first position and a second position relative to the testing platform. In the first position, the fluid supply pipeline is communicated with the fluid control device and is sealed and connected through the seal. In the second position, the fluid supply pipeline is away from the fluid control device. The testing mechanism is used to test the fluid output through the mounting base, thereby achieving performance testing of the fluid control device. The present application can achieve automatic testing of the fluid control device through the automatic testing device, effectively solving the problem of the cumbersome existing manual testing process, reducing labor costs and error rates, and improving testing efficiency and testing accuracy.

[0046] The concepts described herein may be implemented in other forms without departing from their spirit and characteristics. The specific embodiments disclosed should be considered illustrative rather than restrictive. Therefore, the scope of this application is determined by the appended claims rather than by the preceding description. Any changes within the literal meaning and equivalent scope of the claims should fall within the scope of these claims.

Claims

1. An automatic testing device for a fluid control device, characterized in that: The invention comprises a test platform, a sealing component, a fluid supply pipeline, a lifting mechanism and a test mechanism. The test platform is provided with a mounting base. The fluid control device is mounted on the mounting base and communicated with the mounting base. The lifting mechanism is used to control the movement of the fluid supply pipeline relative to the test platform between a first position and a second position. In the first position, the fluid supply pipeline is communicated with the fluid control device and is sealed by the sealing component. In the second position, the fluid supply pipeline is away from the fluid control device. The test mechanism is used to test the fluid output through the mounting base.

2. The automatic testing device for a fluid control device according to claim 1, characterized in that: The fluid supply pipeline is provided with a connector at one end close to the test platform, and the connector is used to communicate with the fluid control device and be sealed and connected through the seal; the connector is provided with a first flow channel connected to the fluid supply pipeline, the fluid control device is provided with a second flow channel, and the mounting base is provided with a third flow channel, and the first flow channel, the second flow channel and the third flow channel are connected in sequence.

3. The automatic testing device for a fluid control device according to claim 2, characterized in that: The fluid control device is a throttle nozzle, the sealing component is a sealing sleeve, the sealing sleeve is sleeved outside the throttle nozzle and installed on the mounting base, and the connector is sealed and matched with the sealing sleeve.

4. The automatic testing device for a fluid control device according to claim 3, characterized in that: One end of the first flow channel close to the throttle nozzle expands outward to form a first connecting oblique wall, and a protrusion is provided on the outer wall of the sealing sleeve close to the connecting head, and the protrusion forms a second connecting oblique wall that seals with the first connecting oblique wall.

5. The automatic testing device for a fluid control device according to claim 3, characterized in that: The sealing sleeve is provided with a sleeve cavity at one end close to the connecting head, and a connecting port connected to the sleeve cavity at one end away from the connecting head. The throttle nozzle is interference fit in the sleeve cavity, and one end of the second flow channel is connected to the first flow channel, and the other end is connected to the third flow channel through the connecting port; the mounting base is provided with a mounting groove at one end close to the connecting head, and the third flow channel passes through the bottom wall of the mounting groove, the sealing sleeve is sealingly connected to the mounting groove, and the connecting port is connected to the third flow channel.

6. The automatic testing device for a fluid control device according to claim 2, characterized in that: The fluid control device is a flow regulator, the sealing element is a sealing ring, the flow regulator is installed on the mounting base, and the connector and the flow regulator are sealed and matched through the sealing ring.

7. The automatic testing device for a fluid control device according to claim 6, characterized in that: A connecting portion is provided on the outer side wall of the flow regulator, and a side of the connecting portion away from the connecting head is sealed and connected to the mounting base, and the sealing ring is sealingly fitted between the connecting portion and the connecting head.

8. The automatic testing device for a fluid control device according to claim 7, characterized in that: A first connecting groove is provided on a side of the connecting portion close to the connecting head, a second connecting groove is provided on a side of the connecting head close to the flow regulator, and the sealing ring is sealingly fitted between the first connecting groove and the second connecting groove.

9. The automatic testing device for a fluid control device according to any one of claims 1 to 8, characterized in that: It also includes a rotating disk, which is rotatably mounted on the test platform. The rotating disk is provided with a plurality of test stations arranged at intervals along a circumferential direction, and each of the test stations can be used to test one of the fluid control devices.

10. The automatic testing device for a fluid control device according to claim 9, characterized in that: The rotating disk is provided with an outer circumference and at least one inner circumference provided inside the outer circumference, and a plurality of the testing stations are provided on the outer circumference and the inner circumference respectively.

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