A braided rope performance test structure and method thereof

Abstract

The application relates to a braided rope performance test structure and a method thereof, wherein the braided rope performance test structure comprises an inflation block, a mounting block, mounting sheets and a pressing cover; the upper surface of the inflation block is provided with an inflation cavity, a gas leakage gap and a mounting groove between the inflation cavity and the gas leakage gap; the sidewalls of the mounting groove are provided with two air passage gaps, and the two air passage gaps are respectively communicated with the inflation cavity and the gas leakage gap; the sidewall of the inflation block is provided with an inflation hole and an exhaust hole which are communicated with the inflation cavity; the mounting block is arranged in the mounting groove, and the upper surface of the mounting block is provided with a test groove along the axial direction of the mounting block; the length of the test groove is not less than the length of the air passage gap, and the test groove is aligned with the air passage gap; the mounting sheets are two and are detachably connected to the upper surface of the mounting block to fix the two ends of the braided rope at the two ends of the mounting block, and the upper surface of the inflation block is flush with the mounting sheets and the braided rope, and the braided rope is arranged in the test groove and protrudes above the upper surface of the inflation block; and the pressing cover is detachably connected to the upper surface of the inflation block and is pressed above the mounting sheets and the braided rope.

Description

Technical Field

[0001] This application belongs to the field of braided rope performance testing technology, specifically relating to a braided rope performance testing structure and method. Background Technology

[0002] The core concept of braided rope heat-sealing design is a combination of springs and high-temperature insulation materials. The springs provide rebound force to ensure good contact with the sealing surface and prevent hot air leakage, while the high-temperature insulation materials block heat transfer.

[0003] Braided rope sealing assemblies are flexible in design and can well meet the sealing requirements of turbine engines and hypersonic engines, making them an important way to achieve the thermal sealing requirements of future hypersonic aircraft.

[0004] The main problems with the sealing of braided ropes include two aspects: the compressibility of the braided rope and its airtightness. How to test the compressibility and airtightness of the braided rope in a high-temperature environment is an urgent technical problem that needs to be solved. Therefore, this application is hereby submitted. Summary of the Invention

[0005] The purpose of this application is to provide a braided rope performance testing structure and method, so as to accurately assess the compression performance and / or airtightness of braided ropes under high-temperature environments in ground tests.

[0006] The technical solution of this application is:

[0007] On the one hand, a braided rope performance testing structure is provided, including an air block, a mounting block, a mounting plate, and a pressure cap;

[0008] The upper surface of the inflatable block has an inflation cavity, a leakage gap, and an installation groove between the inflation cavity and the leakage gap; the side walls of the installation groove have ventilation gaps, and the two ventilation gaps are respectively connected to the inflation cavity and the leakage gap;

[0009] The sidewall of the inflatable block has an inflation hole and an exhaust hole that communicate with the inflation chamber;

[0010] The mounting block is set in the mounting groove, and the upper surface has a test groove along its axial direction. The length of the test groove is not less than the length of the venting notch and is aligned with the venting notch.

[0011] A circumferential sealing ring and a vertical sealing strip are provided between the mounting block and the side wall of the mounting groove. The circumferential sealing ring surrounds the outer periphery of the mounting block. There are two sets of vertical sealing strips, distributed on both sides of the mounting block. Each set of vertical sealing strips has two strips, distributed at both ends of the mounting block. The ventilation gap is located between the two vertical sealing strips. Each vertical sealing strip is divided into two sections, distributed on the upper and lower sides of the circumferential sealing ring.

[0012] There are two mounting plates, which are detachably connected to the upper surface of the mounting block. The two ends of the braided rope are fixed to the two ends of the mounting block, and are flush with the upper surface of the inflatable block. The braided rope is in the test groove, and its top protrudes from the upper surface of the inflatable block.

[0013] The pressure cap is detachably connected to the upper surface of the inflatable block and is pressed tightly against the mounting plate and braided rope.

[0014] According to at least one embodiment of this application, in the above-described braided rope performance testing structure, the inflatable block is rectangular and the mounting groove is racetrack-shaped.

[0015] The inflation chamber and the air leakage gap are located near the two side walls of the inflatable block, respectively.

[0016] The inflation port is connected to the inflation pipe, which is connected to a high-temperature gas source, and an inflation valve is installed on the inflation pipe.

[0017] The exhaust port is connected to the exhaust pipe, and an exhaust valve is installed on the exhaust pipe;

[0018] There are two vent holes and their corresponding vent pipes, located on the side walls at both ends of the inflatable block.

[0019] According to at least one embodiment of this application, in the above-described braided rope performance testing structure, the circumferential sealing ring and the sealing groove for installing the vertical sealing strip are provided on the mounting block.

[0020] According to at least one embodiment of this application, in the above-described braided rope performance testing structure, the mounting plate is connected to the upper surface of the mounting block by screws;

[0021] The mounting plate secures the two ends of the braided rope by pressing the two ends of the braided rope into the fixing grooves opened on the upper surface of the mounting block.

[0022] According to at least one embodiment of this application, in the above-described braided rope performance testing structure, the pressure cap is connected to the upper surface of the inflatable block by screws;

[0023] A pressure gauge is installed on the pressure cap to monitor the pressure inside the inflation chamber.

[0024] According to at least one embodiment of this application, in the above-mentioned braided rope performance test structure, a C-shaped sealing strip is provided between the pressure cap and the inflation block and the mounting plate. The C-shaped sealing strip is provided along the outer periphery of the inflation chamber and overlaps the two mounting plates, covering the part between the ventilation opening communicating with the inflation chamber and the braided rope.

[0025] The sealing groove for C-type sealing strip installation can be opened on the inflatable block or mounting plate.

[0026] According to at least one embodiment of this application, in the above-described braided rope performance testing structure, sealant is filled between the pressure cap and the inflatable block and mounting plate for sealing.

[0027] According to at least one embodiment of this application, in the above-described braided rope performance testing structure, there are multiple test grooves and their corresponding braided ropes arranged side by side on the upper surface of the mounting block.

[0028] On the other hand, a method for testing the performance of braided rope is provided, implemented based on the above-mentioned braided rope performance testing structure, including:

[0029] High-temperature gas is injected into the inflation chamber to bring the pressure inside the chamber to the required level. The pressure change inside the inflation chamber is observed to obtain the airtightness of the braided rope.

[0030] According to at least one embodiment of this application, in the above-described braided rope performance testing method, mounting blocks with test grooves of different depths are selected, high-temperature gas is injected into the inflation chamber to make the pressure inside the inflation chamber reach the required pressure, and the change in pressure inside the inflation chamber is observed to obtain the airtightness of the braided rope under different degrees of compression. Attached Figure Description

[0031] Figure 1 This is an overall schematic diagram of the braided rope performance testing structure provided in the embodiments of this application;

[0032] Figure 2 This is a partial schematic diagram of the braided rope performance testing structure provided in the embodiments of this application;

[0033] Figure 3 This is a schematic diagram of the installation block being installed into the inflatable block according to an embodiment of this application;

[0034] in:

[0035] 1-Inflatable block; 2-Mounting block; 3-Mounting piece; 4-Grip cap; 5-Inflating pipe; 6-Exhaust pipe; 7-Circumferential sealing ring; 8-Vertical sealing strip; 9-C-type sealing strip; 10-Braided rope;

[0036] A - Inflation chamber; B - Leakage gap.

[0037] To better illustrate this embodiment, some content in the accompanying drawings may be omitted, enlarged, or reduced. They are for illustrative purposes only and should not be construed as limiting the scope of this application. Detailed Implementation

[0038] To make the technical solution and advantages of this application clearer, the technical solution of this application will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this application, and are only used to explain this application, not to limit this application. It should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings, and other related parts can be referred to the general design.

[0039] Furthermore, unless otherwise defined, the technical or scientific terms used in this application description shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The word "comprising" as used in this application description indicates that the concept preceding the word encompasses the concepts listed following the word and their equivalents, without excluding other related concepts.

[0040] Furthermore, the terms indicating location used in the description of this application are only used to indicate relative directions or positional relationships. When the absolute position of the described object changes, its relative positional relationship may also change accordingly. It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation" and "connection" used in the description of this application should be interpreted broadly. For example, a connection can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand its specific meaning in this application according to the specific circumstances.

[0041] A braided rope performance testing structure, such as Figure 1-2 As shown, it includes an inflatable block 1, a mounting block 2, a mounting plate 3, and a pressure cap 4.

[0042] The inflatable block 1 can be designed in the shape of a rectangle, with an inflation cavity A, an air leakage notch B, and an installation groove between the inflation cavity A and the air leakage notch B on the upper surface.

[0043] The inflation chamber A and the air leakage gap B are located near the two side walls of the inflation block 1, respectively.

[0044] The mounting slot can be designed in the shape of a racetrack, with ventilation openings on both side walls. The two ventilation openings are connected to the inflation chamber A and the leakage opening B, respectively.

[0045] The side wall of the inflatable block 1 has an inflation hole that communicates with the inflation chamber A. The inflation hole is connected to the inflation pipe 5, which is connected to a high-temperature gas source. An inflation valve can be installed on the inflation pipe 5 to control the flow of high-temperature gas into the inflation chamber A.

[0046] The side wall of the inflatable block 1 has an exhaust hole that communicates with the inflation chamber A. The exhaust hole is connected to the exhaust pipe 6, and an exhaust valve can be installed on the exhaust pipe 6 to control the discharge of high-temperature gas in the inflation chamber A.

[0047] The exhaust port and its corresponding exhaust pipe 6 can be designed as two, located on the side walls at both ends of the inflatable block 1 respectively.

[0048] Mounting block 2 is set in the mounting slot, such as Figure 3 As shown, the upper surface has a test groove along its axial direction. The length of the test groove is not less than the length of the ventilation gap. Specifically, it can be designed to be equal to the length of the ventilation gap and aligned with the ventilation gap.

[0049] A circumferential sealing ring 7 and a vertical sealing strip 8 are provided between the mounting block 2 and the side wall of the mounting groove. The circumferential sealing ring 7 surrounds the outer periphery of the mounting block 2. There are two sets of vertical sealing strips 8, distributed on both sides of the mounting block 2. Each set of vertical sealing strips 8 has two strips, distributed at both ends of the mounting block 2. The vent is located between the two vertical sealing strips 8. Each vertical sealing strip 8 is divided into two segments, distributed on the upper and lower sides of the circumferential sealing ring 7. This ensures the airtightness between the mounting block 2 and the mounting groove and prevents the high-temperature gas that has been filled into the inflation chamber A from flowing out from the gap between the mounting block 2 and the mounting groove.

[0050] The sealing grooves for installing the circumferential sealing ring 7 and the vertical sealing strip 8 can be opened on the mounting block 2.

[0051] There are two mounting pieces 3, which are detachably connected to the upper surface of the mounting block 2. The two ends of the braided rope 10 are fixed to the two ends of the mounting block 2 respectively, and are flush with the upper surface of the inflatable block 1. The braided rope 10 is in the test groove, and its upper part protrudes from the upper surface of the inflatable block 1.

[0052] The mounting plate 3 can be connected to the upper surface of the mounting block 2 by screws to fix the two ends of the braided rope 10. Specifically, it can be designed so that the two ends of the braided rope 10 are pressed into the fixing grooves opened on the upper surface of the two ends of the mounting block 2 respectively. In order to facilitate installation, clamping plates can be set at both ends of the braided rope 10. The two mounting plates 3 press the clamping plates at both ends of the braided rope 10 into the fixing grooves for fixation.

[0053] The pressure cap 4 is detachably connected to the upper surface of the inflatable block 1, specifically by screws, and is pressed on top of the mounting plate 3 and the braided rope 10.

[0054] A pressure gauge can be installed on the pressure cap 4 to monitor the pressure inside the inflation chamber A.

[0055] To prevent leakage of the high-temperature gas injected into the inflation chamber A between the pressure cap 4 and the inflation block 1 and mounting plate 3, a C-shaped sealing strip 9 can be installed between the pressure cap 4 and the inflation block 1 and mounting plate 3. The C-shaped sealing strip 9 is installed along the outer periphery of the inflation chamber A and overlaps the two mounting plates 3, covering the part between the ventilation opening communicating with the inflation chamber A and the braided rope 10. It can further seal the area between the pressure cap 4 and the inflation block 1 and mounting plate 3 by filling with sealant.

[0056] The C-type sealing strip 9 has a sealing groove for installation, which can be opened on the inflatable block 1 and the mounting plate 3.

[0057] The performance test of the braided rope using the braided rope performance test structure disclosed in the above embodiments can be performed by referring to the following method:

[0058] High-temperature gas is injected into the inflation chamber A to bring the pressure inside the inflation chamber A to the required pressure. The pressure change inside the inflation chamber A is observed to obtain the airtightness of the braided rope 10.

[0059] When high-temperature gas is introduced into the inflation chamber A, the amount of high-temperature gas introduced into the inflation chamber A through the inflation port and the amount of high-temperature gas discharged from the inflation chamber A through the exhaust port can be controlled in a coordinated manner to achieve precise adjustment of the pressure in the inflation chamber A. Furthermore, when the pressure in the inflation chamber A is too high, the gas in the inflation chamber A can be controlled to be discharged in large quantities through the exhaust port for emergency depressurization, ensuring the safety of the test.

[0060] In the braided rope performance testing structure disclosed in the above embodiments, due to the sealing design, the high-temperature gas filled into the inflation chamber A can only be discharged through the ventilation opening connected to the inflation chamber A, the location of the braided rope 10, and the leakage opening B. If the airtightness of the braided rope 10 is poor, the pressure in the inflation chamber A will drop significantly in a short period of time. If the airtightness of the braided rope 10 is good, the pressure in the inflation chamber A will remain constant for a longer period of time.

[0061] In the braided rope performance testing structure disclosed in the above embodiments, multiple mounting blocks 2 can be designed, each with a test groove of different depth. By selecting mounting blocks 2 with test grooves of different depths, the degree to which the braided rope 10 protrudes above the upper surface of the inflatable block 1 varies, and the degree of compression of the braided rope 10 by the pressure cap 4 also varies. In this way, the airtightness of the braided rope 10 under different degrees of compression can be assessed, and the compression performance and airtightness performance of the braided rope under high temperature environment can be obtained.

[0062] In addition, multiple test slots can be arranged side by side on the upper surface of the mounting block 2, allowing multiple braided ropes 10 to be installed simultaneously, thus enabling the testing of compression performance and airtightness of multiple braided ropes 10 under high temperature conditions.

[0063] The technical solution of this application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A braided rope performance testing structure, characterized in that, Includes an inflatable block (1), a mounting block (2), a mounting plate (3), and a pressure cap (4); The upper surface of the inflatable block (1) has an inflation chamber (A), a leakage gap (B), and an installation groove between the inflation chamber (A) and the leakage gap (B); the side walls of the installation groove have ventilation gaps, and the two ventilation gaps are connected to the inflation chamber (A) and the leakage gap (B) respectively. The side wall of the inflatable block (1) has an inflation hole and an exhaust hole that communicate with the inflation chamber (A); The mounting block (2) is set in the mounting groove, and the upper surface has a test groove along its axial direction. The length of the test groove is not less than the length of the ventilation gap and is aligned with the ventilation gap. A circumferential sealing ring (7) and a vertical sealing strip (8) are provided between the mounting block (2) and the side wall of the mounting groove. The circumferential sealing ring (7) surrounds the outer periphery of the mounting block (2). There are two sets of vertical sealing strips (8) distributed on both sides of the mounting block (2). Each set of vertical sealing strips (8) has two strips distributed at both ends of the mounting block (2). The ventilation gap is located between the two vertical sealing strips (8). Each vertical sealing strip (8) is divided into two sections, distributed on the upper and lower sides of the circumferential sealing ring (7). There are two mounting pieces (3), which are detachably connected to the upper surface of the mounting block (2). The two ends of the braided rope (10) are fixed to the two ends of the mounting block (2) respectively, and are flush with the upper surface of the air block (1). The braided rope (10) is in the test groove, and its upper part protrudes from the upper surface of the air block (1). The pressure cap (4) is detachably connected to the upper surface of the inflatable block (1) and pressed tightly above the mounting plate (3) and the braided rope (10); A C-shaped sealing strip (9) is provided between the pressure cap (4), the inflatable block (1), and the mounting plate (3). The C-shaped sealing strip (9) is provided along the outer periphery of the inflatable cavity (A) and overlaps the two mounting plates (3), covering the part between the ventilation opening communicating with the inflatable cavity (A) and the braided rope (10). The C-type sealing strip (9) is installed in a sealing groove on the air block (1) and the mounting plate (3).

2. The braided rope performance testing structure according to claim 1, characterized in that, The inflatable block (1) is rectangular, and the mounting groove is racetrack shaped; The inflation chamber (A) and the air leakage gap (B) are located near the two side walls of the inflation block (1); The inflation hole is connected to the inflation pipe (5), the inflation pipe (5) is connected to the high temperature gas source, and an inflation valve is installed on the inflation pipe (5); The exhaust port is connected to the exhaust pipe (6), and an exhaust valve is provided on the exhaust pipe (6); There are two exhaust holes and their corresponding exhaust pipes (6), located on the side walls at both ends of the air block (1).

3. The braided rope performance testing structure according to claim 2, characterized in that, A sealing groove for installing a circumferential sealing ring (7) and a vertical sealing strip (8) is provided on the mounting block (2).

4. The braided rope performance testing structure according to claim 3, characterized in that, The mounting plate (3) is connected to the upper surface of the mounting block (2) by screws; The mounting plate (3) fixes the two ends of the braided rope (10) by pressing the two ends of the braided rope (10) into the fixing grooves opened on the upper surface of the two ends of the mounting block (2).

5. The braided rope performance testing structure according to claim 4, characterized in that, The pressure cap (4) is connected to the upper surface of the inflatable block (1) by screws; A pressure gauge is installed on the pressure cap (4) to monitor the pressure inside the inflation chamber (A).

6. The braided rope performance testing structure according to claim 5, characterized in that, The space between the pressure cap (4) and the air block (1) and the mounting plate (3) is sealed with sealant.

7. The braided rope performance testing structure according to claim 6, characterized in that, The test grooves and their corresponding braided ropes (10) on the upper surface of the mounting block (2) are arranged in multiple rows.

8. A method for testing the performance of braided rope, implemented based on the braided rope performance testing structure described in claim 7, characterized in that, include: High-temperature gas is injected into the inflation chamber (A) to make the pressure in the inflation chamber (A) reach the required pressure. The change in pressure in the inflation chamber (A) is observed to obtain the airtightness of the braided rope (10).

9. The method for testing the performance of braided rope according to claim 8, characterized in that, Using mounting blocks (2) with different depth test grooves, high temperature gas is injected into the inflation chamber (A) to make the pressure in the inflation chamber (A) reach the required pressure. The pressure change in the inflation chamber (A) is observed to obtain the airtightness of the braided rope (10) under different degrees of compression.

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