Mounting structure of a test subject portion with rubber seal

Abstract

The application provides a mounting structure of a test sensing part with rubber seals, comprising: an outer casing; a floating seal seat connected with the outer casing; an anti-rotation mounting seat connected with the floating seal seat, and the anti-rotation mounting seat is provided with a first accommodating groove, and a first rubber seal ring is arranged in the first accommodating groove; an inner casing provided with a second accommodating groove, and a second rubber seal ring is arranged in the second accommodating groove; and a sensing part, the upper end of which is arranged in the outer casing and abuts against the first rubber seal ring, and the lower end of the sensing part is arranged in the inner casing and abuts against the second rubber seal ring. The first rubber seal ring and the second rubber seal ring are arranged, the heat deformation compensation of the casing and the air flow sealing performance under a high temperature load environment can be ensured, the service life of the sensing part can be prolonged, the stress deformation capacity of the rubber seal structure is stronger, the air flow sealing performance is better, and the cost is saved and the maintenance is good.

Description

Technical Field

[0001] This specification relates to the field of aero-engine technology, specifically to an installation structure for a test sensor with a rubber seal. Background Technology

[0002] To assess the performance, safety, reliability, durability, and operability of new aero-engines, it is essential to conduct corresponding tests and verifications on the engine's aerodynamic performance, overall structure, components, and systems. Testing is a key technology throughout all stages of engine testing; only through testing can the engine's state and performance be obtained quickly and accurately. Test sensors, as the most commonly used equipment for measuring aerodynamic parameters, have been widely applied in engine development and testing. However, due to factors such as installation environment and structural size constraints, higher requirements are placed on the sealing, reliability, deformation resistance, and rapid assembly / disassembly capabilities of the test sensor structure. Therefore, it is necessary to design new sensor mounting structures based on the actual aero-engine casing structure and the complex constraints of the external system, achieving rapid assembly / disassembly of single-layer or multi-layer casings, preventing leakage of airflow between inner and outer bypass systems, reducing the number of parts, and ensuring installation reliability. Simultaneously meeting these functional requirements drastically increases the design difficulty of the test sensor mounting structure.

[0003] Based on publicly available patents and literature, current research on sensor mounting structures is relatively limited, and most studies focus on the design of the sensor's own structure. The sensor mounting structures described in the published patents are complex, making efficient installation and removal on the engine's multi-layer casing impossible. Furthermore, the sealing structures are mostly metal floating ring structures, which pose a risk of damage to the sensor substrate after thermal deformation. In addition, there is limited consideration given to the positioning and anti-rotation design of the sensor on the multi-layer casing. Therefore, a safer, more reliable, and more efficient sensor mounting structure is essential for conducting corresponding experimental verification of the engine's aerodynamic performance, overall structure, and various components and systems.

[0004] Disadvantages of existing technology:

[0005] (1) The sealing performance and thermal deformation effects were not considered at the joint between the sensing part and the multi-layer casing. This caused the casing mounting base to deform under heat and squeeze the sensing part, reducing the service life of the sensing part and increasing the cost.

[0006] (2) During the installation of the sensing part, the floating ring in the multi-layer floating ring sealing structure is not constrained in its free state, making it difficult to ensure concentricity with the sensing part and increasing the assembly difficulty.

[0007] (3) The gap between the floating ring and the mounting base and the sensing part is unevenly deformed under high temperature environment, which can easily cause the floating ring and the sensing part to get stuck, resulting in poor airflow sealing and the extrusion stress affecting the safety of the sensing part.

[0008] (4) The design of the anti-rotation and radial positioning structure of the sensing part is not considered much. The sensing part is approximately a cylinder. Under the vibration environment of the engine, circumferential and radial displacement will occur, which will affect the stability of the sensing part test and bring the risk of fatigue failure. Once the sensing part is damaged, it will also affect the normal operation of the engine. Summary of the Invention

[0009] In view of this, the embodiments of this specification provide a mounting structure for a test sensing part with a rubber seal, so as to improve the sealing performance and reduce the influence of deformation on the probe.

[0010] The technical solution of the present invention is as follows: an installation structure for a test sensing part with a rubber seal, comprising: an outer casing; a floating sealing seat connected to the outer casing; an anti-rotation mounting seat connected to the floating sealing seat, wherein the anti-rotation mounting seat is provided with a first receiving groove and a first rubber sealing ring is provided in the first receiving groove; an inner casing provided with a second receiving groove and a second rubber sealing ring is provided in the second receiving groove; and a sensing part, the upper end of which passes through the outer casing and abuts against the first rubber sealing ring, and the lower end of which passes through the inner casing and abuts against the second rubber sealing ring.

[0011] Furthermore, the mounting structure of the test sensor with rubber seal also includes a gasket and a clamping nut. The gasket covers the first rubber sealing ring and abuts against the floating sealing seat. The clamping nut is threaded into the anti-rotation mounting seat and presses the gasket tight.

[0012] Furthermore, the outer peripheral surface of the sensing part is provided with an anti-rotation step, the anti-rotation step is provided with an anti-rotation notch, the lower end of the anti-rotation mounting base is provided with an anti-rotation protrusion, and the anti-rotation protrusion can cooperate with the anti-rotation notch to prevent the sensing part from rotating.

[0013] Furthermore, a positioning step is provided at the lower end of the sensing part, and the positioning step abuts against the second rubber sealing ring.

[0014] Furthermore, the mounting structure of the test sensor with rubber seal also includes a sensor mounting base, which is fixedly connected to the inner casing, and the sensor mounting base can press the positioning step and the second rubber sealing ring together.

[0015] Furthermore, the sensing part mounting base and the second rubber sealing ring are positioned and connected by a locating pin.

[0016] Furthermore, an adjustment shim is provided between the sensor mounting base and the inner casing.

[0017] Furthermore, the sensing part mounting base has a cylindrical structure, and a through hole is provided on the upper end of the cylindrical cover of the sensing part mounting base. The cross-sectional shape of the through hole is the same as the cross-sectional shape of the positioning step.

[0018] Furthermore, the cross-sectional shape of the through hole includes a circular portion and two rectangular portions, with the two rectangular portions symmetrically arranged on both sides of the circular portion and connected to the circular portion.

[0019] Compared with the prior art, the beneficial effects that can be achieved by the above-mentioned at least one technical solution adopted in the embodiments of this specification include at least the following: by setting the first rubber sealing ring and the second rubber sealing ring, the present invention can ensure the thermal deformation compensation and airflow sealing performance of the casing under thermal load, improve the service life of the sensing part, and the rubber sealing structure has stronger stress deformation capacity and better airflow sealing performance, which saves costs and has good maintainability. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a structural schematic diagram of an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the anti-rotation mounting base of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the sensing part mounting base of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the sensing part of the present invention.

[0025] The reference numerals in the figure are as follows: 1. Outer casing; 2. Floating seal seat; 3. Compression nut; 4. First rubber seal ring; 5. Anti-rotation mounting seat; 6. Gasket; 7. Sensing part; 71. Anti-rotation step; 72. Positioning step; 8. Inner casing; 9. Sensing part mounting seat; 10. Second rubber seal ring; 11. Positioning pin; 12. Adjusting shim. Detailed Implementation

[0026] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0027] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] like Figures 1 to 4 As shown, this embodiment of the invention provides an installation structure for a test sensing part with a rubber seal, including: an outer duct casing 1, a floating seal seat 2, an anti-rotation mounting seat 5, an inner casing 8, and a sensing part 7. The floating seal seat 2 is connected to the outer duct casing 1; the anti-rotation mounting seat 5 is connected to the floating seal seat 2, and the anti-rotation mounting seat 5 is provided with a first receiving groove, in which a first rubber sealing ring 4 is provided; the inner casing 8 is provided with a second receiving groove, in which a second rubber sealing ring 10 is provided; the upper end of the sensing part 7 passes through the outer duct casing 1 and abuts against the first rubber sealing ring 4, and the lower end of the sensing part 7 passes through the inner casing 8 and abuts against the second rubber sealing ring 10.

[0029] By setting a first rubber sealing ring 4 and a second rubber sealing ring 10, this invention can ensure the thermal deformation compensation and airflow sealing performance of the casing under hot load conditions, improve the service life of the sensing part, and the rubber sealing structure has stronger stress deformation capacity and better airflow sealing performance, which saves costs and is easy to maintain.

[0030] The mounting structure of the test sensor with rubber seal also includes a gasket 6 and a clamping nut 3. The gasket 6 covers the first rubber sealing ring 4 and abuts against the floating sealing seat 2. The clamping nut 3 is threadedly engaged with the anti-rotation mounting seat 5 and presses the gasket 6 tightly. By using the clamping nut 3 to press the gasket 6 at the position where the first rubber sealing ring 4 and the anti-rotation mounting seat 5 meet, the sealing performance of the external airflow is further ensured. The clamping nut 3 and the anti-rotation mounting seat 5 are connected by threads, resulting in high structural reliability.

[0031] The outer peripheral surface of the sensing part 7 is provided with an anti-rotation step 71, and the anti-rotation step 71 is provided with an anti-rotation notch. The lower end of the anti-rotation mounting base 5 is provided with an anti-rotation protrusion, and the anti-rotation protrusion can cooperate with the anti-rotation notch to prevent the sensing part 7 from rotating. The anti-rotation protrusion and the anti-rotation notch can achieve circumferential positioning of the sensing part 7, thereby preventing the sensing part 7 from rotating.

[0032] The anti-rotation structure is fully integrated with the anti-rotation mounting base 5, reducing the number of parts required for anti-rotation of the sensing part 7. The anti-rotation structure is compact and has high safety and reliability. The anti-rotation mounting base 5 is designed with anti-rotation protrusions, and the corresponding sensing part 7 has an anti-rotation step 71 structure. The anti-rotation mounting base 5 and the anti-rotation step 71 notch are matched to achieve a simple structure, convenient assembly and disassembly, and a longer service life.

[0033] Furthermore, a positioning step 72 is provided at the lower end of the sensing part 7, and the positioning step 72 abuts against the second rubber sealing ring 10. The mounting structure of the test sensing part with rubber seal also includes a sensing part mounting base 9, which is fixedly connected to the inner casing 8, and the sensing part mounting base 9 can press the positioning step 72 and the second rubber sealing ring 10 together.

[0034] By setting the sensing part mounting seat 9 to press the positioning step 72 against the second rubber sealing ring 10, the second rubber sealing ring 10 will not move, thereby ensuring the sealing performance of the entire device.

[0035] The sensor mounting base 9 and the second rubber sealing ring 10 are positioned and connected by a locating pin 11. Adjusting shims 12 are provided between the sensor mounting base 9 and the inner casing 8. The locating pin 11 achieves a circumferentially fixed relationship between the sensor mounting base 9 and the second rubber sealing ring 10; then, screws are used to fix the sensor mounting base 9 to the inner casing 8. The addition of adjusting shims 12 of varying thicknesses serves to fine-tune the radial installation position of the sensor mounting base 9 and to ensure airflow sealing.

[0036] Preferably, the sensing part mounting base 9 has a cylindrical structure, and a through hole is provided on the upper end cap of the sensing part mounting base 9. The cross-sectional shape of the through hole is the same as the cross-sectional shape of the positioning step 72. The cross-sectional shape of the through hole includes a circular part and two rectangular parts, and the two rectangular parts are symmetrically arranged on both sides of the circular part and connected to the circular part.

[0037] Align the positioning step 72 with the through rectangular hole of the sensing part mounting base 9. When the device is installed to a certain position, the protruding part of the positioning step 72 enters the sensing part mounting base 9 and is locked in place. Finally, tighten the fixing screws connecting the sensing part mounting base 9 and the inner casing 8 to complete the installation.

[0038] During installation according to this embodiment of the invention: First, the second rubber sealing ring 10 is installed in the groove of the sensing part mounting seat 9, and the two are fixed in a circumferential relative relationship by the positioning pin 11; then, the sensing part mounting seat 9 is fixed to the inner casing 8 with screws, and adjusting shims 12 of different thicknesses are used in the middle to finely adjust the radial installation position of the sensing part 7 and to seal the airflow; next, after the outer casing 1 is assembled, the sensing part 7 is inserted into the sensing part mounting seat, wherein the notch of the positioning step 72 is aligned with the rectangular hole of the sensing part mounting seat 9. When it is installed to a certain position, the sensing part 7 is rotated so that the protruding part of the positioning step 72 enters the "cup-shaped constriction" inside the sensing part mounting seat 9. Finally, the fixing screws connecting the sensing part mounting seat 9 and the inner casing are tightened. The floating seal seat 2 is installed on the outer casing 1. The anti-rotation mounting seat 5 is connected to the floating seal seat 2 by several screws, which are not tightened at first. The anti-rotation protrusion of the anti-rotation mounting seat 5 matches the notch of the anti-rotation step 71. Then, the first rubber sealing ring 4 is installed in the groove of the anti-rotation mounting seat 5 through the sensing part 7. The first rubber sealing ring 4 is slightly higher than the size of the groove of the anti-rotation mounting seat 5. Finally, the gasket 6 is installed in the anti-rotation mounting seat 5. The annular surface of the gasket 6 presses against the end face of the rubber sealing ring and the mating position of the anti-rotation mounting seat 5. The clamping nut 3 is threadedly connected to the anti-rotation mounting seat 5. The clamping gasket 6 further improves the sealing performance between the anti-rotation mounting seat 5 and the first rubber sealing ring 4. After ensuring that the installation is completely correct, the screws of the floating seal seat 2 and the anti-rotation mounting seat 5 are tightened to complete the assembly.

[0039] The above description is merely a specific embodiment of this application, but the scope of protection of this application 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 application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A mounting structure for a test sensing part with a rubber seal, characterized in that, include: Outer casing (1); The floating sealing seat (2) is connected to the outer casing (1); The anti-rotation mounting base (5) is connected to the floating sealing base (2), and the anti-rotation mounting base (5) is provided with a first receiving groove, and a first rubber sealing ring (4) is provided in the first receiving groove. The inner casing (8) is provided with a second receiving groove, and a second rubber sealing ring (10) is provided in the second receiving groove. The upper end of the sensing part (7) passes through the outer casing (1) and abuts against the first rubber sealing ring (4), and the lower end of the sensing part (7) passes through the inner casing (8) and abuts against the second rubber sealing ring (10). The outer peripheral surface of the sensing part (7) is provided with an anti-rotation step (71), the anti-rotation step (71) is provided with an anti-rotation notch, the lower end of the anti-rotation mounting base (5) is provided with an anti-rotation protrusion, and the anti-rotation protrusion can cooperate with the anti-rotation notch to prevent the sensing part (7) from rotating. The lower end of the sensing part (7) is provided with a positioning step (72), which abuts against the second rubber sealing ring (10); The mounting structure of the test sensor with rubber seal also includes a sensor mounting base (9), which is fixedly connected to the inner casing (8), and the sensor mounting base (9) can press the positioning step (72) and the second rubber sealing ring (10) together. The sensing part mounting base (9) has a cylindrical structure. A through hole is provided on the upper end of the cylindrical cover of the sensing part mounting base (9). The cross-sectional shape of the through hole is the same as the cross-sectional shape of the positioning step (72). The cross-sectional shape of the through hole includes a circular portion and two rectangular portions, with the two rectangular portions symmetrically arranged on both sides of the circular portion and connected to the circular portion.

2. The mounting structure of the test sensor with rubber seal according to claim 1, characterized in that, The installation structure of the test sensor with rubber seal also includes a gasket (6) and a clamping nut (3). The gasket (6) covers the first rubber sealing ring (4) and abuts against the floating sealing seat (2). The clamping nut (3) is threadedly engaged with the anti-rotation mounting seat (5) and presses the gasket (6) tight.

3. The mounting structure of the test sensor with rubber seal according to claim 1, characterized in that, The sensor mounting base (9) and the second rubber sealing ring (10) are positioned and connected by a positioning pin (11).

4. The mounting structure of the test sensor with rubber seal according to claim 3, characterized in that, An adjustment shim (12) is provided between the sensor mounting base (9) and the inner casing (8).

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