Graphite sealing friction heat effect experiment device
By designing a graphite seal frictional thermal effect experimental device, the difficult problem of studying the frictional thermal effect of graphite seals under different working conditions was solved, accurate frictional thermal data was provided, and the understanding and research on graphite seal performance was improved.
Patent Information
- Application Number
- CN202422708472.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-11-07
AI Technical Summary
Existing technologies make it difficult to effectively study the impact of frictional heat effects of graphite seals on their performance under different operating conditions, which affects the reliability and fuel consumption of aircraft engines.
A graphite seal frictional thermal effect experimental device was designed, which included a friction turntable, a fixed base, a force loading structure, a force sensor, a graphite seal mounting base, a thermocouple and a heater. It can simulate the frictional thermal data of graphite seals under different working conditions, detect the temperature through the thermocouple and simulate the ambient temperature through the heater.
The friction heat data of graphite seals can be obtained under different working conditions, the actual working conditions can be simulated, and the accuracy and reliability of the research on graphite seal performance can be improved.
Smart Images
Figure CN223320219U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of graphite sealing experiments, and in particular provides a graphite sealing friction heat effect experimental device. Background Art
[0002] Graphite seals have become an ideal seal for aircraft engine bearing cavities due to their key role in minimizing working medium leakage and reducing energy consumption. However, graphite seals can wear due to sliding friction between the friction pairs, resulting in a decrease in sealing performance, which in turn affects aircraft engine reliability, fuel consumption, and thrust-to-weight ratio. Frictional heat significantly influences the frictional wear behavior of graphite seals, and the frictional wear pattern of graphite seals varies at different temperatures. Therefore, studying the impact of different operating conditions on the frictional heat effects of graphite seals has become an urgent issue. Utility Model Content
[0003] In view of this, the purpose of the present invention is to provide a graphite seal friction heat effect experimental device to obtain friction heat data of graphite seals under different working conditions.
[0004] The technical solution provided by the utility model is: a graphite seal friction thermal effect experimental device, comprising: a test bench, a friction turntable, a fixed base, a force loading structure, a force sensor, a graphite seal mounting seat, a graphite seal test piece, a thermocouple and a heating plate, wherein the friction turntable is rotatably mounted on the test bench, the fixed base is fixedly mounted on one side of the test bench, the force loading structure is mounted on the fixed base and connected to the graphite seal mounting seat through the force sensor, and is used to apply a radial load to the graphite seal mounting seat, the graphite seal test piece is fixedly mounted on the graphite seal mounting seat and forms a graphite seal structure with the friction turntable, the thermocouples are multiple and spaced apart inside the graphite seal test piece, and are used to detect the temperature of the graphite seal test piece, and the heating plates are multiple and spaced apart on the back of the graphite seal test piece, and are used to conduct heat to the graphite seal test piece to simulate the ambient temperature.
[0005] Preferably, the fixed base includes a slide base and a slide plate, and the slide plate is slidably mounted on the slide base and locked by a locking mechanism.
[0006] Further preferably, the slide plate includes a first horizontal plate and a first vertical plate, the first horizontal plate is slidably connected to the slide base, and the first vertical plate is fixedly connected to the first horizontal plate, the force loading structure includes a threaded rod, the threaded rod is horizontally connected to the first vertical plate through a thread, one end of the threaded rod is connected to the force sensor, and the other end of the force sensor is fixedly connected to the graphite sealing mounting seat, and two guide rods are further arranged between the graphite sealing mounting seat and the first vertical plate, and the two guide rods are symmetrically arranged on both sides of the threaded rod, one end of the guide rod is fixedly connected to the graphite sealing mounting seat, and the other end fits through the first vertical plate.
[0007] Further preferably, a guide cylinder cooperating with the guide rod is fixedly connected to the first vertical plate.
[0008] Further preferably, the graphite sealing mounting seat is spaced apart from the fixed base.
[0009] Further preferably, a socket is provided on the back of the graphite sealing test piece, and the thermocouple is fitted and inserted into the socket.
[0010] Further preferably, the graphite sealing mounting seat includes a seat body and a fixed pressure plate, the seat body is provided with a placement groove, the graphite sealing test piece and the heating plate are both arranged in the placement groove and fixed by the fixed pressure plate.
[0011] The graphite seal friction heat effect experimental device provided by the utility model can simulate different working conditions (such as different rotation speeds, different ambient temperatures, and different radial loads), and obtain friction heat data of different graphite seal test pieces under different working conditions by replacing different graphite seal test pieces. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:
[0013] Figure 1 A top view of the graphite seal friction heat effect experimental device provided by the utility model;
[0014] Figure 2 This is a front view of the graphite seal friction heat effect experimental device provided by the utility model. DETAILED DESCRIPTION
[0015] The present invention will be further explained below in conjunction with specific implementation plans, but the present invention is not limited thereto.
[0016] like Figure 1 、 Figure 2As shown, the utility model provides a graphite seal friction thermal effect experimental device, comprising: a test bench 1, a friction turntable 2, a fixed base 3, a force loading structure 4, a force sensor 5, a graphite seal mounting seat 6, a graphite seal test piece 7, a thermocouple 8 and a heating plate 9, wherein the friction turntable 2 is rotatably mounted on the test bench 1, the fixed base 3 is fixedly mounted on one side of the test bench 1, the force loading structure 4 is mounted on the fixed base 3 and connected to the graphite seal mounting seat 6 through the force sensor 5, for applying a radial load to the graphite seal mounting seat 6, the graphite seal test piece 7 is fixedly mounted on the graphite seal mounting seat 6 and forms a graphite sealing structure with the friction turntable 2, the thermocouple 8 is multiple and spaced apart inside the graphite seal test piece 7, for detecting the temperature of the graphite seal test piece 7, the heating plate 9 is multiple and spaced apart on the back of the graphite seal test piece 7, for conducting heat to the graphite seal test piece 7 to simulate the ambient temperature.
[0017] The graphite seal friction heat effect experimental device can simulate different working conditions (such as different speeds, different ambient temperatures, and different radial loads), and obtain the friction heat data (temperature) of different graphite seal test pieces under different working conditions by replacing different graphite seal test pieces. The specific experimental process is as follows: first, the graphite seal test piece with measurement (a section of the test piece) is installed on the graphite seal mounting seat. Then, the force between the graphite seal test piece and the friction turntable is adjusted by the force loading structure (for simulating the radial load) and the initial temperature of the graphite seal test piece is adjusted by the heating plate (for simulating the ambient temperature). The magnitude of the force between the graphite seal test piece and the friction turntable can be detected by the force sensor. When the preset loading load and initial temperature are reached, the friction turntable is started and its speed is controlled to reach the preset speed (for simulating the rotor speed). After that, the friction heat data of the graphite seal test piece under this working condition at different times can be obtained by detecting the temperature by the thermocouple.
[0018] Among them, the force loading device is used to fine-tune the position of the graphite sealing test piece, and then adjust the loading load, as an improvement of the technical solution, such as Figure 2 As shown, the fixed base 3 includes a slide base 31 and a slide plate 32. The slide plate 32 is slidably mounted on the slide base 31 and locked by a locking mechanism. By setting the fixed base into a slide structure, the position of the slide plate and the components above it can be easily adjusted, which facilitates the replacement of graphite sealing test pieces, etc.
[0019] As an improvement of the technical solution, Figure 1 、 Figure 2As shown, the slide plate 32 includes a first horizontal plate 321 and a first vertical plate 322, the first horizontal plate 321 is slidably connected to the slide base 31, and the first vertical plate 322 is fixedly connected to the first horizontal plate 321, and the force loading structure 4 includes a threaded rod, and the threaded rod is horizontally connected to the first vertical plate 322 through a thread, one end of the threaded rod is connected to the force sensor 5, and the other end of the force sensor 5 is fixedly connected to the graphite sealing mounting seat 6, and two guide rods 10 are further arranged between the graphite sealing mounting seat 6 and the first vertical plate 322, and the two guide rods 10 are symmetrically arranged on both sides of the threaded rod, one end of the guide rod 10 is fixedly connected to the graphite sealing mounting seat 6, and the other end fits through the first vertical plate 322.
[0020] As an improvement of the technical solution, Figure 1 、 Figure 2 As shown, a guide cylinder 3221 that cooperates with the guide rod 10 is fixedly connected to the first vertical plate 322 to ensure the stability of the movement of the graphite seal mounting seat.
[0021] As an improvement of the technical solution, Figure 2 As shown, the graphite sealing mounting seat 6 is spaced apart from the fixed base 3 to avoid friction between the graphite sealing mounting seat and the fixed base.
[0022] As an improvement of the technical solution, Figure 1 As shown, a socket is provided on the back of the graphite sealing test piece 7, and the thermocouple 8 is inserted into the socket.
[0023] As an improvement of the technical solution, Figure 1 、 Figure 2 As shown, the graphite sealing mounting seat 6 includes a seat body 61 and a fixed pressure plate 62. The seat body 61 is provided with a placement groove 611. The graphite sealing test piece 7 and the heating plate 9 are both arranged in the placement groove 611 and fixed by the fixed pressure plate 62. Preferably, the position of the heating plate 9 corresponds to the position between adjacent thermocouples 8.
[0024] The specific implementation methods of the present invention are written in a progressive manner, emphasizing the differences between the various implementation methods, and similar parts can be referenced to each other.
[0025] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in this field without departing from the purpose of the present invention.
Claims
1. A graphite seal friction heat effect experimental device, characterized in that: include: An experimental table (1), a friction turntable (2), a fixed base (3), a force loading structure (4), a force sensor (5), a graphite sealing mounting seat (6), a graphite sealing test piece (7), a thermocouple (8) and a heating plate (9), wherein the friction turntable (2) is rotatably mounted on the experimental table (1), the fixed base (3) is fixedly mounted on one side of the experimental table (1), the force loading structure (4) is mounted on the fixed base (3) and connected to the graphite sealing mounting seat (6) through the force sensor (5), and is used A radial load is applied to the graphite sealing mounting seat (6), the graphite sealing test piece (7) is fixedly mounted on the graphite sealing mounting seat (6) and forms a graphite sealing structure with the friction turntable (2), the thermocouples (8) are multiple and spaced apart inside the graphite sealing test piece (7) for detecting the temperature of the graphite sealing test piece (7), the heating plates (9) are multiple and spaced apart on the back of the graphite sealing test piece (7) for conducting heat to the graphite sealing test piece (7) to simulate the ambient temperature.
2. The graphite seal friction heat effect experimental device according to claim 1, characterized in that: The fixed base (3) comprises a slide base (31) and a slide plate (32), wherein the slide plate (32) is slidably mounted on the slide base (31) and is locked by a locking mechanism.
3. The graphite seal friction heat effect experimental device according to claim 2, characterized in that: The slide plate (32) includes a first horizontal plate (321) and a first vertical plate (322), wherein the first horizontal plate (321) is slidably connected to the slide base (31), and the first vertical plate (322) is fixedly connected to the first horizontal plate (321). The force loading structure (4) includes a threaded rod, wherein the threaded rod is horizontally connected to the first vertical plate (322) through a thread, one end of the threaded rod is connected to the force sensor (5), and the other end of the force sensor (5) is fixedly connected to the graphite sealing mounting seat (6). Two guide rods (10) are further provided between the graphite sealing mounting seat (6) and the first vertical plate (322), and the two guide rods (10) are symmetrically arranged on both sides of the threaded rod, one end of the guide rod (10) is fixedly connected to the graphite sealing mounting seat (6), and the other end cooperates to pass through the first vertical plate (322).
4. The graphite seal friction heat effect experimental device according to claim 3, characterized in that: A guide cylinder (3221) that cooperates with the guide rod (10) is fixedly connected to the first vertical plate (322).
5. The graphite seal friction heat effect experimental device according to claim 1, characterized in that: The graphite sealing mounting seat (6) and the fixed base (3) are spaced apart.
6. The graphite seal friction heat effect experimental device according to claim 1, characterized in that: The back of the graphite sealing test piece (7) is provided with a socket, and the thermocouple (8) is inserted into the socket.
7. The graphite seal friction heat effect experimental device according to claim 1, characterized in that: The graphite sealing mounting seat (6) comprises a seat body (61) and a fixed pressing plate (62); a placement groove (611) is provided on the seat body (61); the graphite sealing test piece (7) and the heating plate (9) are both arranged in the placement groove (611) and fixed by the fixed pressing plate (62).