Multi-parameter plane displacement measuring device

Abstract

The invention discloses a multi-parameter plane displacement measuring device, which relates to the technical field of aero-engine testing, and comprises a testing section casing, the top of the testing section casing is provided with a sealed water cooling cavity, the sealed water cooling cavity is provided with a ship-shaped rack, the interior of the ship-shaped rack is connected with a sliding plate, the sliding plate is provided with a mounting seat, and the mounting seat is provided with a longitudinal displacement mechanism. The telescopic end of the longitudinal displacement mechanism is in transmission connection with a mounting plate, the mounting plate clamps a test probe through a clamping mechanism, and a probe head of the test probe sequentially penetrates through the mounting base, the sliding plate, a channel reserved in the sealing water cooling cavity and the top wall of the test section casing and then is located in the test section casing. A transverse displacement mechanism is installed at one end of the ship-shaped rack, and the telescopic end of the transverse displacement mechanism is in transmission connection to the installation base. According to the invention, the probe section of the test probe can be driven to move on the test plane in the test section casing through the transverse and longitudinal displacement mechanisms, so that a plurality of parameters of a specific plane can be obtained.

Description

Technical Field

[0001] The invention relates to the technical field of aeroengine testing, and in particular to a multi-parameter plane displacement measuring device. Background Art

[0002] Aircraft engines have extremely high design and manufacturing requirements. High-performance aircraft engines can represent the highest level of a country's industrial manufacturing. The components of aircraft engines are assembled very compactly. The combustion chamber and turbine, as the core hot end components, have extremely high design accuracy requirements. The optimization design of each stage is inseparable from refined measurement. However, its high temperature and high pressure working environment brings extremely high difficulty to refined measurement.

[0003] Existing non-contact measurements are mainly laser measurements, which can only measure a single parameter and are complex and costly, making them difficult to apply to traditional engine testing. Existing contact measurements are mostly performed by setting up fixed measurement targets, which have large structural dimensions and can only measure a fixed position, providing limited help for global analysis of the engine. In summary, existing engine testing equipment has the problems of single function and low spatial resolution. Therefore, how to perform high-precision planar distribution measurements of the complex aerodynamic thermal characteristic parameters of the compact interface between the engine combustion chamber and the turbine guide vanes and the turbine multi-stage blades has become a difficult problem that technicians in this field need to solve urgently. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-parameter plane displacement measuring device to solve the problems of single function and low spatial resolution of existing engine testing equipment.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] The invention provides a multi-parameter plane displacement measuring device, comprising a test section casing, a sealed water-cooling cavity is installed on the top of the test section casing, a ship-shaped frame is installed above the sealed water-cooling cavity, a slide plate is slidably connected inside the ship-shaped frame, the slide plate and the sealed water-cooling cavity are dynamically sealed, a mounting seat is installed on the slide plate, a longitudinal displacement mechanism is installed on the mounting seat, a telescopic end of the longitudinal displacement mechanism is transmission-connected with a mounting plate, the mounting plate clamps a test probe through a clamping mechanism, the probe of the test probe passes through the mounting seat, the slide plate, a reserved channel on the sealed water-cooling cavity and the top wall of the test section casing in sequence, and is located inside the test section casing; a transverse displacement mechanism is installed at one end of the ship-shaped frame, and the telescopic end of the transverse displacement mechanism is transmission-connected to the mounting seat.

[0007] Optionally, the test section casing is frame-shaped, an engine for testing is placed inside the test section casing, and an oblong hole for passing the test probe is opened on the top wall of the test section casing.

[0008] Optionally, the sealed water-cooling chamber is in the shape of an "I", and a channel for passing the test probe is reserved in the center of the sealed water-cooling chamber. A water cooling inlet and a water cooling outlet are respectively installed on the lower horizontal chamber and the upper horizontal chamber of the sealed water-cooling chamber. A groove for dynamic sealing is provided on the top wall of the upper horizontal chamber of the sealed water-cooling chamber. The groove is located around the channel reserved in the center of the sealed water-cooling chamber, and the groove corresponds to the slide plate.

[0009] Optionally, the test probe is cylindrical, the body of the test probe is clamped in the clamping mechanism of the mounting plate, the probe head of the test probe is located in the testing section casing, and a dynamic seal is formed between the test probe and the mounting seat.

[0010] Optionally, the parameters tested by the test probe include pressure, fluid velocity, airflow angle, combustion components and temperature.

[0011] Optionally, the mounting seat and the mounting plate are both L-shaped, the longitudinal displacement mechanism is installed on the horizontal wall of the mounting seat, and the telescopic end of the transverse displacement mechanism is transmission-connected to the vertical wall of the mounting seat; the telescopic end of the longitudinal displacement mechanism is transmission-connected to the horizontal wall of the mounting plate, and the clamping mechanism is installed on the vertical wall of the mounting plate.

[0012] Optionally, both the lateral displacement mechanism and the longitudinal displacement mechanism adopt air cylinders, oil cylinders or electric cylinders.

[0013] Compared with the prior art, the beneficial technical effects of the present invention are:

[0014] The multi-parameter plane displacement measuring device proposed in the present invention can drive the probe section of the test probe to move on the test plane in the test section casing through the lateral and longitudinal displacement mechanisms, thereby obtaining multiple parameters of a specific plane. Since only the probe section with a smaller size intrudes into the test plane, the gas flow on the plane has little effect, and can reflect the real aerodynamic thermal characteristic parameters on the compact interface between the combustion chamber and the turbine guide vane and the turbine multi-stage blades, thereby providing support for the design of engine components;

[0015] The scanning of the test plane is realized through the lateral displacement mechanism and the longitudinal displacement mechanism, and has a high spatial resolution;

[0016] A sealed water-cooling chamber is designed at the sealing position of the device, which is conducive to sealing in a high-temperature working environment and ensures reliable sealing;

[0017] The lateral displacement mechanism, longitudinal displacement mechanism and lead wire section of the test probe of the device are all outside the test environment, which reduces the difficulty of sealing and facilitates maintenance;

[0018] The test probes are replaceable, which is convenient for multi-parameter measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a schematic structural diagram of the multi-parameter plane displacement measuring device of the present invention;

[0021] Figure 2 This is a schematic diagram of the sealed water-cooling chamber structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the skateboard of the present invention.

[0023] Explanation of the accompanying drawings: 1. test section casing; 2. sealed water-cooling chamber; 3. ship-shaped frame; 4. test probe; 5. mounting seat; 6. mounting plate; 7. lateral displacement mechanism; 8. longitudinal displacement mechanism; 9. slide plate; 2001. water-cooling inlet; 2002. water-cooling outlet; 2003. groove. DETAILED DESCRIPTION

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] like Figure 1-3 As shown, a multi-parameter plane displacement measuring device comprises a test section casing 1, a sealed water-cooling chamber 2 is installed on the top of the test section casing 1, a ship-shaped frame 3 is installed above the sealed water-cooling chamber 2, a slide plate 9 is slidably connected inside the ship-shaped frame 3, the slide plate 9 and the sealed water-cooling chamber 2 are dynamically sealed, a mounting seat 5 is installed on the slide plate 9, a longitudinal displacement mechanism 8 is installed on the mounting seat 5, the telescopic end of the longitudinal displacement mechanism 8 is transmission-connected with a mounting plate 6, the mounting plate 6 clamps a test probe 4 through a clamping mechanism, the probe of the test probe 4 passes through the mounting seat 5, the slide plate 9, the reserved channel on the sealed water-cooling chamber 2 and the top wall of the test section casing 1 in sequence, and is located inside the test section casing 1; a lateral displacement mechanism 7 is installed at one end of the ship-shaped frame 3, and the telescopic end of the lateral displacement mechanism 7 is transmission-connected to the mounting seat 5.

[0026] The clamping mechanism adopts an existing clamping mechanism. A hole is provided at the center of the slide plate 9 for the test probe 4 to pass through, and a slide groove is provided on the inner wall of the boat-shaped frame 3 for the slide plate 9 to slide. The boat-shaped frame 3 and the sealed water-cooling chamber 2 are bolted together, and the slide plate 9 and the mounting seat 5 are bolted together.

[0027] In specific implementation, a cavity for circulating cooling water is further provided inside the slide plate 9 , and a water inlet and outlet are provided on the top of the slide plate 9 . The water inlet and outlet on the top of the slide plate 9 are connected to the cavity inside the slide plate 9 .

[0028] Specifically, the test section casing 1 is frame-shaped, an engine for testing is placed inside the test section casing 1 , and an oblong hole for passing the test probe 4 is opened on the top wall of the test section casing 1 .

[0029] Specifically, the sealed water-cooling chamber 2 is in the shape of an "I", and a channel for passing the test probe 4 is reserved in the center of the sealed water-cooling chamber 2. A water-cooling inlet 2001 and a water-cooling outlet 2002 are respectively installed on the lower horizontal chamber and the upper horizontal chamber of the sealed water-cooling chamber 2. A groove 2003 for dynamic sealing is provided on the top wall of the upper horizontal chamber of the sealed water-cooling chamber 2. The groove 2003 is located around the channel reserved in the center of the sealed water-cooling chamber 2. The groove 2003 corresponds to the slide 9 to achieve dynamic sealing cooperation between the sealed water-cooling chamber 2 and the slide 9.

[0030] The groove 2003 is annular in shape, and a star ring and an oil seal are arranged in the groove 2003 .

[0031] In a specific implementation, the water cooling inlet 2001 and the water cooling outlet 2002 are both connected to a water pump for circulating cooling water through a bellows.

[0032] Specifically, the test probe 4 is cylindrical, the body of the test probe 4 is clamped in the clamping mechanism of the mounting plate 6, the probe of the test probe 4 is located in the test section casing 1, and the test probe 4 and the mounting seat 5 are dynamically sealed.

[0033] The body of the test probe 4 and the mounting seat 5 are slidably connected, and an O-ring for sealing is installed at the sliding connection between the body of the test probe 4 and the mounting seat 5 .

[0034] There are multiple types of test probes 4 , and each test probe 4 tests different parameters. During specific implementation, those skilled in the art may use existing test probes 4 for testing or customize test probes 4 according to actual needs for operation.

[0035] Specifically, the parameters tested by the test probe 4 include pressure, fluid velocity, airflow angle, combustion components and temperature.

[0036] Specifically, the mounting seat 5 and the mounting plate 6 are both L-shaped, the longitudinal displacement mechanism 8 is installed on the horizontal wall of the mounting seat 5, and the telescopic end of the transverse displacement mechanism 7 is transmission-connected to the vertical wall of the mounting seat 5; the telescopic end of the longitudinal displacement mechanism 8 is transmission-connected to the horizontal wall of the mounting plate 6, and the clamping mechanism is installed on the vertical wall of the mounting plate 6.

[0037] Specifically, the lateral displacement mechanism 7 and the longitudinal displacement mechanism 8 both adopt air cylinders, oil cylinders or electric cylinders.

[0038] The use process of the present invention is as follows:

[0039] Installation work: determine the type of the test probe 4 according to the parameters to be tested, clamp the body of the specific type of test probe 4 in the clamping mechanism on the mounting plate 6 and slidably connect the test probe 4 to the mounting seat 5.

[0040] Displacement operation: The probe of the test probe 4 is driven to move on the test plane in the test section casing 1 through the lateral displacement mechanism 7 and the longitudinal displacement mechanism 8, thereby obtaining multiple parameters of a specific plane. Specifically, when the lateral displacement mechanism 7 is working, it drives the mounting seat 5 to move horizontally, and the mounting seat 5 drives the test probe 4 to move horizontally synchronously; when the longitudinal displacement mechanism 8 is working, it drives the mounting plate 6 to move longitudinally, and the mounting plate 6 drives the test probe 4 to move longitudinally synchronously.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A multi-parameter plane displacement measuring device, characterized in that: The invention comprises a test section casing (1), a sealed water-cooling chamber (2) is installed on the top of the test section casing (1), a ship-shaped frame (3) is installed above the sealed water-cooling chamber (2), a slide plate (9) is slidably connected inside the ship-shaped frame (3), a dynamic seal is formed between the slide plate (9) and the sealed water-cooling chamber (2), a mounting seat (5) is installed on the slide plate (9), a longitudinal displacement mechanism (8) is installed on the mounting seat (5), and the telescopic end of the longitudinal displacement mechanism (8) is transmission-connected to the longitudinal displacement mechanism (8) A mounting plate (6) is provided, wherein the mounting plate (6) clamps a test probe (4) through a clamping mechanism, and the probe of the test probe (4) sequentially passes through the mounting seat (5), the slide plate (9), a reserved channel on the sealed water-cooling chamber (2) and the top wall of the test section casing (1) and is located inside the test section casing (1); a lateral displacement mechanism (7) is installed at one end of the ship-shaped frame (3), and the telescopic end of the lateral displacement mechanism (7) is transmission-connected to the mounting seat (5).

2. The multi-parameter plane displacement measuring device according to claim 1, characterized in that: The test section casing (1) is frame-shaped, an engine for testing is placed inside the test section casing (1), and an oblong hole for passing the test probe (4) is provided on the top wall of the test section casing (1).

3. The multi-parameter plane displacement measuring device according to claim 1, characterized in that: The sealed water-cooling chamber (2) is in the shape of an "I" character, a channel for passing the test probe (4) is reserved in the center of the sealed water-cooling chamber (2), a water-cooling inlet (2001) and a water-cooling outlet (2002) are respectively installed on the lower transverse chamber and the upper transverse chamber of the sealed water-cooling chamber (2), a groove (2003) for dynamic sealing is arranged on the top wall of the upper transverse chamber of the sealed water-cooling chamber (2), the groove (2003) is located around the channel reserved in the center of the sealed water-cooling chamber (2), and the groove (2003) corresponds to the slide plate (9).

4. The multi-parameter plane displacement measuring device according to claim 1, characterized in that: The test probe (4) is cylindrical in shape, the body of the test probe (4) is clamped in the clamping mechanism of the mounting plate (6), the probe of the test probe (4) is located in the test section casing (1), and a dynamic seal is formed between the test probe (4) and the mounting seat (5).

5. The multi-parameter plane displacement measuring device according to claim 1, characterized in that: The parameters tested by the test probe (4) include pressure, fluid velocity, air flow angle, combustion components and temperature.

6. The multi-parameter plane displacement measuring device according to claim 1, characterized in that: The mounting seat (5) and the mounting plate (6) are both L-shaped; the longitudinal displacement mechanism (8) is mounted on the horizontal wall of the mounting seat (5); the telescopic end of the transverse displacement mechanism (7) is transmission-connected to the vertical wall of the mounting seat (5); the telescopic end of the longitudinal displacement mechanism (8) is transmission-connected to the horizontal wall of the mounting plate (6); and the clamping mechanism is mounted on the vertical wall of the mounting plate (6).

7. The multi-parameter plane displacement measuring device according to claim 1, characterized in that: The lateral displacement mechanism (7) and the longitudinal displacement mechanism (8) both adopt air cylinders, oil cylinders or electric cylinders.

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