Fixture for testing the air tightness of wind turbine gearboxes

Abstract

A fixture for airtightness testing of wind turbine reducers is disclosed, relating to the field of airtightness testing technology for mechanical components. It addresses the technical problem that existing airtightness testing instruments cannot perform airtightness testing quickly and conveniently. In the fixture, one end of the airtightness testing rod is connected to an instrument base, and the other end is connected to an airtightness testing probe, which comes in various specifications. The other end of the instrument base is connected to an air pipe connector, and a digital pressure gauge adapter is connected to the side wall of the instrument base for connecting a digital pressure gauge.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing technology for mechanical parts, and in particular to a tooling for airtightness testing of wind turbine reducers. Background Technology

[0002] Currently, yaw and pitch reducers are core components of wind power generation systems, playing a crucial role in improving power generation efficiency and ensuring stable system operation.

[0003] In practical applications, speed reducers must undergo rigorous airtightness testing before leaving the factory. This airtightness test primarily checks for leaks at various connection points of the speed reducer, typically involving gear oil and gas.

[0004] Gear oil leaks can be detected by visual inspection of various connection points and plugs in the reducer; however, air leaks are detected by observing minute changes and require an airtightness tester.

[0005] Specifically, the existing air tightness test for the entire reducer is a test of equipment. It is usually placed in a fixed position. The air hose is long and is easily pulled back and forth during the test, which can cause the air hose interface to fall off or the air hose to soften and become unusable. In addition, it is highly dependent on the environment. Humidity, temperature and other factors can affect the measurement results. Furthermore, it also requires a certain level of operator skill.

[0006] Therefore, the inventors of this application have found that existing airtightness testing instruments are expensive, require regular maintenance, and are inconvenient to handle and operate manually. Utility Model Content

[0007] The purpose of this utility model is to provide a tooling for testing the air tightness of wind turbine reducers, in order to solve the technical problem that existing air tightness testers cannot perform air tightness testing quickly and conveniently.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A fixture for testing the air tightness of wind turbine reducers includes: an air tightness testing rod, one end of which is connected to an instrument base, and the other end of which is connected to an air tightness testing probe, which has various specifications; the other end of the instrument base is connected to an air pipe connector, and the side wall of the instrument base is connected to a digital pressure gauge converter, which is used to connect a digital pressure gauge.

[0009] In practical applications, the airtightness testing probe has an internal thread, and both ends of the airtightness testing rod have external threads. The external thread of the airtightness testing rod is screwed into the internal thread of the airtightness testing probe to achieve the connection between the airtightness testing probe and the airtightness testing rod.

[0010] The instrument base has internal threads at both ends, and the external thread of the airtightness testing rod is screwed into the internal thread of the instrument base to connect the airtightness testing rod to the instrument base.

[0011] Specifically, the tracheal connector has an external thread, and the external thread of the tracheal connector is screwed into the internal thread of the instrument base to achieve the connection between the tracheal connector and the instrument base.

[0012] Furthermore, the side wall of the instrument base has an internal thread, one end of the digital pressure gauge converter has an external thread, and the external thread of the digital pressure gauge converter is screwed into the internal thread of the side wall of the instrument base to achieve the connection between the digital pressure gauge converter and the instrument base.

[0013] Furthermore, the other end of the digital pressure gauge conversion head has an internal thread, the digital pressure gauge has an external thread, and the external thread of the digital pressure gauge is screwed into the internal thread of the digital pressure gauge conversion head to achieve the connection of the digital pressure gauge.

[0014] Furthermore, the airtightness testing probe is available in five different specifications.

[0015] Optionally, the air pipe connector is equipped with a manually adjustable pressure reducing valve, which is used to control the air pressure.

[0016] Compared with existing technologies, the tooling for testing the air tightness of wind turbine reducers described in this utility model has the following advantages: This utility model provides a tooling for testing the air tightness of wind turbine reducers. One end of the air tightness testing rod is screwed into one end of the instrument base, ensuring all threads are engaged. An air tightness testing probe conforming to the reducer's plug specifications is screwed into the other end of the air tightness testing rod, ensuring all threads are engaged. The other end of the instrument base is screwed into the air pipe connector, ensuring all threads are engaged. A digital pressure gauge adapter is screwed into the side of the instrument base, and a digital pressure gauge is screwed in after wrapping the threads of the adapter with several turns of Teflon tape to detect air pressure leakage. Finally, the air tightness testing probe, wrapped with Teflon tape, is screwed into the corresponding plug hole of the reducer. This completes the entire process of assembling the air tightness testing tooling and the reducer. The tooling for airtightness testing of wind turbine reducers provided by this utility model has a simple and reliable structure and an overall lightweight design. The tooling has good versatility; each time, only the corresponding specification probe needs to be replaced to achieve universal tooling, without the need for separate customization, which effectively saves manufacturing costs. The tooling is highly operable, easy to handle, and effectively improves production efficiency. The tooling has a compact structure, is simple to install, and is easy to process.

[0017] In other words, the tooling for testing the air tightness of wind turbine reducers provided by this utility model allows for the connection of various specifications of probes, ensuring the tooling's versatility and interchangeability, thereby saving manufacturing costs; the long rod's special design facilitates wrench tightening, ensuring that the tooling itself meets air tightness requirements; operation is convenient and quick, allowing for easy handling and requiring minimal operator skill; the compact structure, composed of assembled parts, and lightweight design effectively improve production efficiency during batch operations. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the airtightness testing fixture for wind turbine reducers provided in an embodiment of the present invention; Figure 2 This is a reference diagram showing the usage status of the tooling for testing the air tightness of wind turbine reducers provided in this embodiment of the utility model.

[0019] Figure label: 1-Reducer; 2-Air tightness test rod; 3-Air tightness test probe; 4-Instrument base; 5-Air pipe connector; 6-Digital pressure gauge converter. Detailed Implementation

[0020] In the current operation of air tightness testing of yaw and pitch reducers, there are often problems such as limited location of the air tightness tester, influence of external factors, and invariable movement of air pipe wiring, which result in the lack of suitable tools for the testing operation. This leads to low operation efficiency, inconvenience in handling and operation, and high requirements for the operator's operating skills. Alternatively, the designed tooling may not be used properly due to interference between the reducer and the tooling.

[0021] For ease of understanding, the following description, in conjunction with the accompanying drawings, provides a detailed description of the tooling for testing the air tightness of wind turbine speed reducers provided in the embodiments of this utility model.

[0022] This utility model embodiment provides a tooling for testing the airtightness of wind turbine reducers, such as... Figure 1 and Figure 2 As shown, it includes: an airtightness testing rod 2, one end of which is connected to an instrument base 4, and the other end of which is connected to an airtightness testing probe 3, which has various different specifications; the other end of the instrument base 4 is connected to an air pipe connector 5, and the side wall of the instrument base 4 is connected to a digital pressure gauge converter 6, which can be used to connect a digital pressure gauge.

[0023] Compared with the prior art, the tooling for testing the air tightness of wind turbine reducers described in this embodiment of the invention has the following advantages: The air tightness testing fixture for wind turbine reducers provided in this embodiment involves screwing one end of the air tightness testing rod 2 into one end of the instrument base 4, ensuring that all threads are engaged; screwing the air tightness testing probe 3, which conforms to the screw plug specifications of the reducer 1, into the other end of the air tightness testing rod 2, ensuring that all threads are engaged; screwing the other end of the instrument base 4 into the air pipe connector 5, ensuring that all threads are engaged; screwing the digital pressure gauge converter 6 into the side of the instrument base 4, and after wrapping the threads of the digital pressure gauge converter 6 with raw rubber tape several times, screwing in a digital pressure gauge to detect air pressure leakage; finally, after wrapping the air tightness testing probe 3 with raw rubber tape, screwing it into the corresponding screw plug hole of the reducer 1, thus completing the entire operation process of the air tightness testing fixture and reducer assembly. The tooling for airtightness testing of wind turbine reducers provided in this embodiment of the utility model has a simple and reliable structure and an overall lightweight design. The tooling has good versatility; each time, only the corresponding specification probe needs to be replaced to achieve universal tooling, without the need for separate customization, which effectively saves manufacturing costs. The tooling is highly operable, easy to handle, and effectively improves production efficiency. The tooling has a compact structure, is simple to install, and is easy to process.

[0024] In other words, the tooling for testing the air tightness of wind turbine reducers provided in this embodiment of the utility model has multiple specifications of probes that can be connected together to ensure the universality and interchangeability of the tooling, thereby saving manufacturing costs; the long rod is specially designed to facilitate tightening with a wrench, ensuring that the air tightness of the tooling itself meets the requirements; it is easy and quick to operate, allowing for immediate use and requiring low operator skills; the structure is compact, composed of parts, and lightweight, which can effectively improve production efficiency during batch operations.

[0025] In practical applications, such as Figure 1 and Figure 2As shown, the airtightness testing probe 3 can have an internal thread of M20×1.5, and both ends of the airtightness testing rod 2 can have external threads of M20×1.5 respectively. The external thread of the airtightness testing rod 2 can be screwed into the internal thread of the airtightness testing probe 3, thereby achieving a good connection between the airtightness testing probe 3 and the airtightness testing rod 2.

[0026] Among them, such as Figure 1 and Figure 2 As shown, the two ends of the instrument base 4 can have internal threads of M20×1.5 and M30×1.5 respectively. The external thread of the airtightness testing rod 2 of M20×1.5 can be screwed into the internal thread of the instrument base 4 of M20×1.5, thereby achieving a good connection between the airtightness testing rod 2 and the instrument base 4.

[0027] Specifically, such as Figure 1 and Figure 2 As shown, the above-mentioned tracheal connector 5 may have an M30×1.5 external thread, and the M30×1.5 external thread of the tracheal connector 5 can be screwed into the M30×1.5 internal thread of the instrument seat 4, thereby achieving a good connection between the tracheal connector 5 and the instrument seat 4.

[0028] Furthermore, such as Figure 1 and Figure 2 As shown, the side wall of the instrument base 4 can have an internal thread of M14×1.5, and one end of the digital pressure gauge converter 6 can have an external thread of M14×1.5. The external thread of the digital pressure gauge converter 6 can be screwed into the internal thread of the side wall of the instrument base 4, thereby achieving a good connection between the digital pressure gauge converter 6 and the instrument base 4.

[0029] Furthermore, such as Figure 1 and Figure 2 As shown, the other end of the digital pressure gauge converter 6 can have an M20×1.5 internal thread, and the digital pressure gauge can have an external thread. The external thread of the digital pressure gauge can be screwed into the M20×1.5 internal thread of the digital pressure gauge converter 6, thereby achieving a good connection of the digital pressure gauge.

[0030] Furthermore, such as Figure 1 and Figure 2 As shown, the airtightness testing probe 3 can have five different specifications, such as: G3 / 8'', G1 / 2'', M16×1.5, M18×1.5, and M22×1.5.

[0031] Optionally, such as Figure 1 and Figure 2As shown, the above-mentioned air pipe connector 5 can be equipped with a manually adjustable pressure reducing valve, and the manually adjustable pressure reducing valve can be used to control the air pressure.

[0032] In summary, the tooling for testing the air tightness of wind turbine reducers provided in this embodiment of the invention has the following advantages: 1. It can be compatible with various reducer pressurization specifications, achieving tooling universality and standardization, which facilitates management and saves costs; Second, the long rod is designed to be machined into a square shape on a cylindrical long rod, which makes it easier to tighten with a wrench and also allows for marking. Third, it is easy for workers to operate. They only need to connect the air source to the air pipe connector, pressurize and maintain the pressure while observing the pressure gauge changes. It is highly operable. Fourth, it is simple to manufacture, inexpensive, and can produce multiple sets of tooling, which can effectively improve production efficiency when operating in batches.

[0033] 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 fixture for testing the airtightness of wind turbine reducers, characterized in that, include: An airtightness testing rod is provided, with one end connected to an instrument base and the other end connected to an airtightness testing probe, which has various specifications. The other end of the instrument base is connected to an air pipe connector, and the side wall of the instrument base is connected to a digital pressure gauge adapter, which is used to connect a digital pressure gauge.

2. The fixture for testing the air tightness of wind turbine reducers according to claim 1, characterized in that, The airtightness testing probe has an internal thread, and the two ends of the airtightness testing rod each have an external thread. The external thread of the airtightness testing rod is screwed into the internal thread of the airtightness testing probe to achieve the connection between the airtightness testing probe and the airtightness testing rod.

3. The fixture for testing the air tightness of wind turbine reducers according to claim 2, characterized in that, The instrument base has internal threads at both ends. The external thread of the airtightness testing rod is screwed into the internal thread of the instrument base to connect the airtightness testing rod to the instrument base.

4. The fixture for testing the air tightness of wind turbine reducers according to claim 3, characterized in that, The tracheal connector has an external thread, and the external thread of the tracheal connector is screwed into the internal thread of the instrument base to achieve the connection between the tracheal connector and the instrument base.

5. The fixture for testing the air tightness of wind turbine reducers according to claim 4, characterized in that, The instrument base has an internal thread on its side wall, and one end of the digital pressure gauge converter has an external thread. The external thread of the digital pressure gauge converter is screwed into the internal thread of the side wall of the instrument base to achieve the connection between the digital pressure gauge converter and the instrument base.

6. The fixture for testing the air tightness of wind turbine reducers according to claim 5, characterized in that, The other end of the digital pressure gauge adapter has an internal thread, and the digital pressure gauge has an external thread. The external thread of the digital pressure gauge is screwed into the internal thread of the digital pressure gauge adapter to achieve the connection of the digital pressure gauge.

7. The fixture for testing the air tightness of wind turbine reducers according to claim 1, characterized in that, The airtightness testing probe comes in five different sizes.

8. The fixture for testing the air tightness of wind turbine reducers according to claim 1, characterized in that, The air pipe connector is equipped with a manually adjustable pressure reducing valve, which is used to control the air pressure.

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