Integrated installation support and temperature and pressure testing system

Abstract

The application discloses an integrated installation support and a temperature and pressure test system, and the integrated installation support comprises a base, a stand, a protective cover and a lead-out pipe; the base is fixed on an external test platform through bolts; the stand is fixedly arranged at the top center position of the base; the upper end of the stand is sequentially provided with a first thermocouple probe, a pressure sensor probe and a second thermocouple probe from top to bottom; a hollow protective cover is fixedly arranged at the rear side of the upper end of the stand; the right end of the lead-out pipe is embedded into the left side of the base; and the sensor cable led out from the rear end of the first thermocouple probe, the pressure sensor probe and the second thermocouple probe is located in the inner cavity of the protective cover. The application is scientific in design, can ensure that the sensor maintains an accurate spatial position under extreme environment, has excellent anti-vibration, anti-impact and anti-thermal load capacity, can effectively protect the sensor and the cable thereof, and is thus favorable for further ensuring that the temperature and pressure parameters of a gas wake field are measured with high fidelity and high reliability.

Description

Technical Field

[0001] This invention relates to the field of aerospace engine testing technology, and in particular to an integrated mounting bracket and temperature and pressure testing system for use in ground test trials of solid rocket engines, which is beneficial for reliably measuring the temperature and pressure parameters of the exhaust field behind the engine nozzle. Background Technology

[0002] The performance and reliability of solid rocket motors are highly dependent on their internal combustion and nozzle ejection processes. The exhaust gas field behind the solid rocket motor nozzle is an extremely harsh environment characterized by extremely high temperatures, high-speed flow, intense chemical reactions, and strong vibrations. The characteristics of this exhaust gas field are crucial data for evaluating engine performance, validating internal ballistic calculations, analyzing nozzle efficiency, and studying secondary combustion effects. Accurately obtaining the temperature and pressure parameters of the exhaust gas field behind the solid rocket motor nozzle is essential for engine design optimization and reliability assessment.

[0003] Currently, the conventional method for testing the temperature and pressure parameters of the exhaust gas field is to fix temperature and pressure sensors to a test platform behind the engine nozzle using separate brackets or simple rod-like structures. These traditional sensor mounting methods have several drawbacks: 1. Poor spatial positioning accuracy: Each sensor is installed independently, making it difficult to guarantee the accuracy and consistency of its relative spatial position in the wake field. This results in the measured temperature and pressure data not being accurately corresponded in space, affecting the accuracy of flow field analysis.

[0004] 2. Insufficient structural rigidity: Under the intense vibrations generated by engine ignition, high-speed combustion gas scouring, and strong aerodynamic loads, simple rod-shaped supports are prone to deformation or resonance, leading to sensor displacement, distorted measurement data, or even sensor damage.

[0005] 3. Weak thermal protection: The bracket itself is directly exposed to high-temperature and high-speed gas and lacks effective thermal protection design. It is prone to material performance degradation, structural deformation, or even melting due to overheating, which endangers the safety of the sensor.

[0006] 4. Low system integration and reliability: Sensor signal cables are usually exposed and rely on simple bundling or point fixing. They lack unified protection and wiring channels and are easily burned and broken under high-speed airflow and high-temperature radiation, resulting in low reliability.

[0007] Therefore, there is an urgent need for a dedicated test mounting bracket that can overcome the above-mentioned defects, achieve precise sensor positioning, possess high structural rigidity and stability, provide effective thermal protection, and be highly integrated. Summary of the Invention

[0008] The purpose of this invention is to address the technical deficiencies of existing technologies by providing an integrated mounting bracket and a temperature and pressure testing system.

[0009] Therefore, the present invention provides an integrated mounting bracket, characterized in that it includes a base, a column, a protective cover, and an outlet pipe; The base is fixed to the external test platform with bolts; Vertically distributed columns are fixedly installed at the center of the top of the base; At the top of the column, from top to bottom, the first thermocouple probe, the pressure sensor probe, and the second thermocouple probe are installed sequentially. A hollow protective cover is fixedly installed on the upper rear side of the column; The right end of the lead-out tube is embedded in the left side of the base; The sensor cables leading out from the rear ends of the first thermocouple probe, the pressure sensor probe, and the second thermocouple probe are located inside the cavity of the protective cover.

[0010] In addition, the present invention also provides a temperature and pressure testing system, which includes an integrated mounting bracket as described above.

[0011] As can be seen from the technical solution provided by the present invention above, compared with the prior art, the present invention provides an integrated mounting bracket and temperature and pressure testing system. The design is scientific and can ensure that the sensor maintains a precise spatial position in extreme environments. It has excellent vibration resistance, shock resistance and thermal load resistance, and can effectively protect the sensor and its cables. This is conducive to further ensuring the high-fidelity and high-reliability measurement of temperature and pressure parameters of the gas wake field, and has significant practical significance.

[0012] After testing, the integrated mounting bracket provided by this invention is found to be an integrated mounting bracket for testing the temperature and pressure of the exhaust field of solid rocket engines. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of an integrated mounting bracket provided by the present invention; Figure 2 This is an enlarged structural diagram of the probe mounting location of an integrated mounting bracket provided by the present invention. The diagram shows the internal structure of the protective cover, with the cover plate of the protective cover removed. Figure 3 This is a cross-sectional view of an integrated mounting bracket provided by the present invention, showing the internal cable channel; Figure 4 This is a structural diagram of the protective cover plate; Figure 5 This is a structural schematic diagram of the column cover plate; In the diagram: 1-base; 2-column; 201-column outer layer; 3-protective cover; 4-protective cover plate; 5-column cover plate; 6-First thermocouple probe (i.e., type B thermocouple probe); 7-Pressure sensor probe; 8-Second thermocouple probe (i.e., type C thermocouple probe); 9-Front side reinforcing rib of the column; 10-Rear side reinforcing rib of the column; 11-Outlet pipe; 12-Intermediate layer of the column; 13-Inner layer of the column; 14-Mica pad; 15-Sensor cable; 16-Post cable passage hole; 17-Post inner layer cable passage; 18-Base cable passage; 19-Outlet pipe cable passage. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0016] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0018] The technical solution of the present invention will be further described below through specific embodiments. Details not specified in the embodiments are all conventional technologies in the industry.

[0019] See Figures 1 to 5 The present invention provides an integrated mounting bracket, including a base 1, a column 2, a protective cover 3 and an outlet tube 11; Base 1 is fixed to the external test platform by bolts; Vertically distributed columns 2 are fixedly installed at the top center of the base 1; At the top of column 2, from top to bottom, are installed the first thermocouple probe (i.e., type B thermocouple probe) 6, the pressure sensor probe 7, and the second thermocouple probe (i.e., type C thermocouple probe) 8. A hollow protective cover 3 is fixedly installed on the upper rear side of the column 2; The right end of the lead-out tube 11 is embedded in the left side of the base 1; Sensor cables 15, which extend from the rear ends of the first thermocouple probe 6, the pressure sensor probe 7, and the second thermocouple probe 8, are located inside the protective cover 3.

[0020] In this invention, specifically, the column 2 and the base 1 are fixed by welding; Protective cover 3 is welded and fixed to the column; The lead tube 11 is embedded in the base 1 and locked in place by screws.

[0021] In this invention, specifically, the base 1 is made of 304 stainless steel; In this invention, specifically, the base 1 is connected to the external testing platform via four bolts, and the specific structural design is as follows: At each of the four corners of the base 1, there is a vertically distributed cylindrical countersunk hole; The external testing platform has threaded holes at positions corresponding to each cylindrical countersunk hole; After the bolt passes through the cylindrical countersunk hole on the base 1, it is threaded and fixedly connected to the corresponding threaded hole.

[0022] It should be noted that, for this invention, the base 1 is provided with four cylindrical countersunk holes for a precise and secure connection with an external testing platform.

[0023] In this invention, a hollow base cable passage 18 is provided on the inner side of the base 1 for leading the sensor cable 15 outward. A hollow lead-out pipe passage 19 is provided inside the lead-out pipe 11; The left side of the base 1 is provided with a lead-out tube embedding groove, and the right end of the lead-out tube 11 is embedded in the lead-out tube embedding groove; The right ends of the base cable passage 18 and the lead-out pipe cable passage 19 are connected.

[0024] It should be noted that, in this invention, the lead-out tube embedding groove is used for the lead-out tube wire passage 19 and the base wire passage 18 to connect; In practice, the base 1 is provided with a threaded hole for mounting a locking screw for the lead-out tube at a position corresponding to the lead-out tube insertion slot; The threaded hole for the lead-out tube locking screw is directly connected to the inside of the lead-out tube embedding groove; A lead-out tube locking screw is provided at the threaded hole (threaded connection); The inner end of the lead-out tube locking screw abuts against the right end of the lead-out tube 11 located in the lead-out tube embedding groove (i.e., they are in tight contact).

[0025] It should be noted that the base 1 is provided with a lead tube locking screw, which is used to fix one end of the lead tube 11 embedded in the base 1.

[0026] In this invention, the column 2 includes an outer layer 201, a middle layer 12, and an inner layer 13 distributed sequentially from the outside to the inside. In practice, the outer layer 201, the middle layer 12, and the inner layer 13 of the column are all made of cylindrical tubes; In terms of specific implementation, the outer layer 201 of the column is made of high temperature resistant 310S stainless steel pipe, the middle layer 12 of the column is made of mica pipe with good high temperature resistance and heat insulation performance, and the inner layer 13 of the column is made of high temperature resistant 310S stainless steel pipe. In specific implementation, the inner layer 13 of the column is welded and fixed to the base 1, and the outer layer 201 of the column is welded and fixed to the base 1. In practice, multiple reinforcing ribs are provided between the outer layer 201 of the column and the base 1, thereby ensuring that the mounting bracket has high rigidity; Furthermore, the front and rear sides of the outer layer 201 of the column are respectively welded and fixed to the top of the base 1 by the front reinforcing rib 9 and the rear reinforcing rib 10 of the column.

[0027] In terms of specific implementation, the upper end of column 2 is provided with three probe mounting holes (three probe mounting holes with precise positioning). The three probe mounting holes, from top to bottom, are the first thermocouple probe mounting hole, the pressure sensor probe mounting hole, and the second thermocouple probe mounting hole. The front openings of the first thermocouple probe mounting hole, the pressure sensor probe mounting hole, and the second thermocouple probe mounting hole are for exposing the probe tip, and the rear openings (for fixing the probe) are connected to the inner cavity of the protective cover 3. The first thermocouple probe (i.e., type B thermocouple probe) 6, the pressure sensor probe 7, and the second thermocouple probe (i.e., type C thermocouple probe) 8 are respectively installed in the first thermocouple probe mounting hole, the pressure sensor probe mounting hole, and the second thermocouple probe mounting hole.

[0028] It should be noted that in this invention, the first thermocouple probe (i.e., type B thermocouple probe) 6 is a mature, ready-made probe with temperature detection function. For example, a type B thermocouple sensor produced by Huishi (Shanghai) Measurement and Control Technology Co., Ltd. can be used. Its function is to effectively block the gas tail flow and measure the temperature after the gas tail flow is completely blocked.

[0029] It should be noted that in this invention, the second thermocouple probe (i.e., the C-type thermocouple probe) 8 is a mature, ready-made probe with temperature detection function. For example, the C-type thermocouple sensor produced by Huishi (Shanghai) Measurement and Control Technology Co., Ltd. can be used. Its function is to effectively block the gas tail flow and measure the temperature after the gas tail flow is completely blocked.

[0030] In this invention, the type B thermocouple probe and the type C thermocouple probe are two different types of temperature sensors.

[0031] It should be noted that both the second thermocouple probe (i.e., type C thermocouple probe) 8 and the first thermocouple probe (i.e., type B thermocouple probe) 6 serve to effectively impede the gas wake and measure the temperature after the gas wake is completely impeded. Type B thermocouples are suitable for measuring temperatures below 1800℃ in oxidizing atmospheres, while type C thermocouples are suitable for measuring extreme high temperatures below 2300℃ in vacuum, inert, or reducing atmospheres, but are prone to oxidation. The simultaneous installation of type B and type C thermocouples is primarily to leverage their complementary advantages in oxidizing or reducing atmospheres, as well as their cross-coverage performance across different temperature ranges. This allows for redundant measurement and cross-verification of temperatures in complex and harsh gas wake fields, thereby significantly improving the reliability and success rate of temperature data acquisition.

[0032] It should be noted that in this invention, the pressure sensor probe 7 is a mature, ready-made probe with pressure detection function. For example, a total pressure sensor manufactured by Collette Semiconductor Products Inc. of the United States can be used. The function of this total pressure sensor is to effectively block the gas tail flow and measure the pressure after the gas tail flow is completely blocked.

[0033] In specific implementation, the middle cavity of the inner layer 13 of the column is the inner layer wire passage 17 of the column; The lower end of the inner layer wire passage 17 of the column is connected to the base wire passage 18 in the base 1; Furthermore, a wire-passing hole 16 is provided at the upper end of the column 2; One side opening of the post cable hole 16 is connected to the post inner layer cable passage 17 in the post inner layer 13; The other side opening of the wire hole 16 on the column is connected to the inner cavity of the protective cover 3.

[0034] It should be noted that the upper end of the column 2 is provided with a column wire passage hole 16, which is used to connect the upper end of the inner layer wire passage channel 17 of the column to the inner cavity of the protective cover 3.

[0035] In specific implementation, a probe mounting platform is provided on the upper end of the outer layer 201 of the column. The probe mounting platform is provided with a first thermocouple probe mounting hole, a pressure sensor probe mounting hole, and a second thermocouple probe mounting hole for mounting and fixing two thermocouple probes and one pressure sensor probe. Furthermore, a mica pad 14 is provided between the column 2 in the probe mounting platform and the three probes (two thermocouple probes and one pressure sensor probe) to isolate the high temperature transmitted to the probes. That is, the first thermocouple probe mounting hole, the pressure sensor probe mounting hole and the second thermocouple probe mounting hole on the column 2 are provided with a mica pad 14 between the first thermocouple probe (i.e., type B thermocouple probe) 6, the pressure sensor probe 7 and the second thermocouple probe (i.e., type C thermocouple probe) 8, and the mica pad 14 serves as heat insulation.

[0036] In this invention, specifically, the top of the column 2 is provided with a column cover plate 5; In practice, a cylindrical boss 501 is provided protruding downwards at the center of the bottom surface of the column cover plate 5; The boss 501 is embedded in the top opening of the column 2 and seals the top opening of the column 2.

[0037] In practice, the connection seam between the boss 501 and the column 2 is also coated with high-temperature resistant sealant.

[0038] It should be noted that, in this invention, the boss 501 is used to seal the internal cavity of the column 2 to prevent the exhaust gas from entering the cavity of the column 2.

[0039] In this invention, specifically, the protective cover 3 is made of high-temperature resistant 310S stainless steel plate; In this invention, specifically, one end of the protective cover 3 is welded and fixed to the outer layer 201 of the column 2; In this invention, specifically, the interior of the protective cover 3 is a cavity used to protect the sensor and cables; In this invention, specifically, the interior of the protective cover 3 is filled with heat-insulating cotton (specifically, zirconium fiber cotton). In this invention, specifically, the protective cover 3 has an opening on one side and a protective cover plate 4 is provided at the opening; A stepped slit 20 is provided on the right side of the protective cover 3; Step joint 20 is located at one end near column 2; The protective cover plate 4 has an embedded boss 21 at one end facing the stepped seam 20; The embedded boss 21 is embedded into the stepped slot 20; It should be noted that a stepped gap 20 is provided between the protective cover plate 4 and the protective cover 3 to facilitate the installation and operation of the probe and to effectively seal the internal cavity of the protective cover 3. After the probe is installed, the internal cavity of the protective cover is filled with high-purity zirconium fiber cotton to isolate the external high temperature transmitted to the sensor and cable.

[0040] In practice, the joint between the protective cover plate 4 and the protective cover 3 is also coated with high-temperature resistant sealant.

[0041] It should be noted that the protective cover 3 can be considered as a hollow cuboid, with one side welded to the column 2. To facilitate the installation of the sensor probe inside the protective cover, a removable protective cover cover plate 4 is provided on one side of the protective cover. Therefore, the protective cover 3 has a protective cover cover plate 4 on only one side, and the other sides of the protective cover 3 are sealed.

[0042] It should be noted that the stepped slot 20 is preferably a curved slot channel. The stepped slot is designed to facilitate probe installation and operation while forming a tortuous slot channel to block high-temperature gas and heat radiation, thereby achieving effective dynamic sealing and thermal protection of the internal cavity of the protective cover. If it were just a simple straight slot, high-temperature gas and heat would easily enter the interior of the protective cover. The stepped structure greatly increases the length and difficulty of the heat and airflow intrusion path. Heat or gas must change direction multiple times to enter the internal cavity of the protective cover, which effectively attenuates its energy, achieving a "maze seal" effect.

[0043] In this invention, specifically, the lead-out tube 11 is made of high-temperature resistant 310S stainless steel. It should be noted that, in this invention, the right end of the lead-out tube 11 is connected to the base wire passage 18 after the lead-out tube embedding groove on the embedded base 1, and the left end of the lead-out tube 11 extends to the outside of the gas exhaust influence zone of the solid rocket engine; the internal cavity of the lead-out tube 11 is the lead-out tube wire passage 19.

[0044] In this invention, the front ends of the three probes (two thermocouple probes and one pressure sensor probe) face the direction of the incoming gas exhaust of the solid rocket motor.

[0045] In a specific implementation of this invention, the integrated mounting bracket includes a sensor cable passage channel; The sensor cable passage includes the internal cavity of the protective cover, the inner layer of the column cable passage 17, the base cable passage 18, and the lead-out tube cable passage 19; Sensor cable 15 passes through the sensor cable cable passage.

[0046] In this invention, specifically, a silicone fiberglass tube is nested outside the sensor cable 15.

[0047] It should be noted that the sensor cable 15 is nested in a high-temperature resistant and heat-insulating silicone fiberglass tube. The sensor cable 15 is led out through the sensor cable passage to the outside of the gas exhaust influence zone of the solid rocket engine, thereby protecting the sensor cable 15 from direct ablation by the external gas exhaust and from external high-temperature transmission.

[0048] Based on the integrated mounting bracket provided by the present invention, the present invention also provides a temperature and pressure testing system, which includes the integrated mounting bracket as described above.

[0049] In summary, this invention, through systematic and innovative design, comprehensively solves the four core challenges faced by sensor mounting brackets in solid rocket motor wake testing: positioning, vibration, thermal protection, and integration, providing a solid hardware foundation for obtaining high-quality test data.

[0050] Compared with the prior art, the integrated mounting bracket provided by the present invention has the following advantages: 1. Enhanced System Integration and Reliability of the Mounting Bracket. By applying this invention, temperature and pressure sensors are integrated and mounted on the same bracket, ensuring the accuracy and consistency of their relative spatial positions in the wake field. This achieves precise spatial correspondence between the measured temperature and pressure data, guaranteeing the accuracy of flow field analysis. All sensor cables are internally housed and fully protected within a sealed channel (i.e., the sensor cable passageway), avoiding the risks of high-temperature ablation and aerodynamic shearing, significantly improving the reliability of the testing system.

[0051] 2. High-Temperature Environment Adaptability of the Mounting Bracket. The mounting bracket's column adopts an inner, middle, and outer layer design, with reinforcing ribs at the front and rear between the outer layer of the column and the base, ensuring high rigidity and thermal protection. Under the intense vibrations generated by engine ignition, high-speed combustion gas scouring, and strong aerodynamic loads, it is not prone to deformation or resonance, protecting the sensor from damage and enabling high-fidelity measurement of wake parameters.

[0052] In summary, compared with existing technologies, this invention provides an integrated mounting bracket and temperature and pressure testing system. Its scientific design ensures that the sensor maintains accurate spatial positioning under extreme environments, possesses excellent vibration, shock, and thermal load resistance, and effectively protects the sensor and its cables. This facilitates high-fidelity and high-reliability measurement of temperature and pressure parameters in the gas wake field, and has significant practical implications.

[0053] It should be noted that, for this invention, through a systematic structural design, the sensor achieves comprehensive protection and precise positioning in the extreme environment of the solid rocket engine exhaust field through the synergistic effect of three dimensions: rigid fixation, thermal protection, and cable integration. The specific implementation method is as follows: I. Ensure precise spatial positioning and vibration / impact resistance, as explained below: 1. Integrated base and reinforced column: All sensors (two thermocouples and one pressure sensor) are integrated and mounted on the same base 1 and column 2, avoiding relative displacement caused by independent supports. The base 1 is rigidly fixed to the test platform by four corner bolts, and the column 2 is welded to the base 1. The outer layer 201 of the column is connected to the base 1 by reinforcing ribs on the front and rear sides (front reinforcing rib 9 and rear reinforcing rib 10), forming a stable triangular support structure.

[0054] 2. Multi-layer composite column structure: Column 2 adopts a three-layer composite structure including an outer layer of 201 (310S stainless steel), a middle layer of 12 (mica tube), and an inner layer of 13 (310S stainless steel). The high-strength stainless steel of the outer and inner layers provides extremely high structural rigidity and impact resistance, ensuring that it does not deform or resonate under severe vibration and high-speed gas flow, thus ensuring that the precise spatial position of the three probes (first thermocouple, pressure sensor, and second thermocouple) in the wake field remains consistent from top to bottom in the vertical direction.

[0055] II. Achieving excellent resistance to thermal loads, as explained below: 1. Multi-layer thermal insulation design: The intermediate layer 12 of the column 2 (i.e., the mica intermediate layer) plays a crucial role in heat blocking, greatly reducing the heat conducted from the external high temperature to the interior through the outer wall of the column, thus protecting the internal cable channel. At the same time, the mica pad 14 set at the probe installation location directly isolates the probe from direct contact with the high temperature of the column 2, reducing the transfer of heat to the sensitive probe body.

[0056] 2. Heat sealing of protective cover and stepped seam: The protective cover 3, where the sensor cable 15 is located, is filled with zirconium fiber cotton to form a physical heat insulation layer. The stepped seam designed between the protective cover plate 4 and the protective cover 3 effectively blocks the direct intrusion of high-temperature gas and radiant heat through a tortuous path (labyrinth seal effect), and together with the internal heat insulation cotton, it forms a reliable heat insulation cavity.

[0057] III. Effective protection of the sensor and its cables is explained below: 1. Fully Enclosed Built-in Cable Channel: After all sensor cables 15 are led out from the probe tail, they first enter the inner cavity of the protective cover 3, then enter the inner layer cable channel 17 of the column through the cable passage hole 16, go down through the base cable passage channel 18, and finally exit to the outside of the high-temperature zone through the lead-out pipe cable passage channel 19. This fully enclosed channel (which includes the inner cavity of the protective cover, the inner layer of the column, the base, and the lead-out pipe connected in sequence) completely physically isolates the sensor cables from the high-speed, high-temperature, and chemically active gas tail flow outside.

[0058] 2. Additional cable protection: When the sensor cable 15 passes through the above-mentioned channel, it is also nested with a high-temperature resistant and heat-insulating silicone fiberglass tube, which provides redundant heat insulation and fire protection, ensuring that the signal transmission remains stable and reliable in extreme environments.

[0059] In summary, this invention systematically solves the four major challenges in wake field testing by using a rigid integrated structure to ensure positioning and vibration resistance, multi-layer composite materials and stepped gaps to block thermal loads, and fully built-in channels for cable protection, thereby achieving the various superior performances claimed in the patent.

[0060] After testing, the integrated mounting bracket provided by this invention is an integrated mounting bracket for testing the temperature and pressure of the exhaust gas of a solid rocket engine.

[0061] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An integrated mounting bracket, characterized in that, It includes a base (1), a column (2), a protective cover (3), and an outlet pipe (11); The base (1) is fixed to the external test platform by bolts; Vertically distributed columns (2) are fixedly installed at the center of the top of the base (1); At the top of the column (2), from top to bottom, a first thermocouple probe (6), a pressure sensor probe (7), and a second thermocouple probe (8) are installed in sequence. A hollow protective cover (3) is fixedly installed on the rear side of the upper end of the column (2). The right end of the lead-out tube (11) is embedded in the left side of the base (1); The sensor cable (15) leading out from the rear end of the first thermocouple probe (6), the pressure sensor probe (7), and the second thermocouple probe (8) is located in the inner cavity of the protective cover (3).

2. The integrated mounting bracket as described in claim 1, characterized in that, The base (1) is connected to the external test platform by four bolts; At the four corners of the base (1), there is a vertically distributed cylindrical countersunk hole; The external testing platform has threaded holes at positions corresponding to each cylindrical countersunk hole; After the bolt passes through the cylindrical countersunk hole on the base (1), it is threaded and fixedly connected to the corresponding threaded hole.

3. The integrated mounting bracket as described in claim 1, characterized in that, The base (1) has a hollow base cable passage (18) on its inner side; A hollow lead-out pipe passage (19) is provided inside the lead-out pipe (11). The left side of the base (1) is provided with a lead-out tube embedding groove, and the right end of the lead-out tube (11) is embedded in the lead-out tube embedding groove; The right ends of the base cable passage (18) and the lead-out pipe cable passage (19) are connected.

4. The integrated mounting bracket as described in claim 3, characterized in that, The base (1) is provided with a threaded hole for mounting the lead-out tube locking screw at a position corresponding to the lead-out tube insertion groove; The threaded hole for the lead-out tube locking screw is directly connected to the inside of the lead-out tube embedding groove; A lead-out tube locking screw is provided at the threaded hole of the lead-out tube locking screw installation; The inner end of the lead-out tube locking screw abuts against the right end of the lead-out tube (11) located in the lead-out tube embedding groove.

5. The integrated mounting bracket as described in claim 1, characterized in that, The column (2) includes an outer layer (201), a middle layer (12) and an inner layer (13) distributed from the outside to the inside. The outer layer (201), middle layer (12), and inner layer (13) of the column are all made of cylindrical tubes; The front and rear sides of the outer layer (201) of the column are fixedly connected to the top of the base (1) through the front reinforcing rib (9) and the rear reinforcing rib (10) of the column, respectively.

6. The integrated mounting bracket as described in claim 5, characterized in that, The upper end of the column (2) is provided with three probe mounting holes, which are the first thermocouple probe mounting hole, the pressure sensor probe mounting hole and the second thermocouple probe mounting hole from top to bottom. The front openings of the first thermocouple probe mounting hole, the pressure sensor probe mounting hole, and the second thermocouple probe mounting hole are connected to the inner cavity of the protective cover (3) on the rear side. The first thermocouple probe (6), the pressure sensor probe (7), and the second thermocouple probe (8) are respectively installed in the first thermocouple probe mounting hole, the pressure sensor probe mounting hole, and the second thermocouple probe mounting hole.

7. The integrated mounting bracket as described in claim 5, characterized in that, The middle cavity of the inner layer (13) of the column is the inner layer wire passage (17). The lower end of the inner layer wire passage (17) of the column is connected to the base wire passage (18) in the base (1); The upper end of the column (2) is provided with a column wire hole (16); One side opening of the post cable hole (16) is connected to the post inner layer cable passage (17) in the post inner layer (13); The other side opening of the wire hole (16) of the column is connected to the inner cavity of the protective cover (3).

8. The integrated mounting bracket as described in claim 1, characterized in that, The top of the column (2) is provided with a column cover plate (5); A cylindrical boss (501) is provided protruding downward at the center of the bottom surface of the column cover plate (5). The boss (501) is embedded in the top opening of the column (2) and seals the top opening of the column (2).

9. The integrated mounting bracket as described in claim 1, characterized in that, Including sensor cable routing channels; The sensor cable passage includes the inner cavity of the protective cover, the inner layer of the column (17), the base (18), and the lead-out tube (19). The sensor cable (15) passes through the sensor cable cable passage; The sensor cable (15) is nested in a silicone fiberglass tube.

10. A temperature and pressure testing system, characterized in that, Includes the integrated mounting bracket as described in any one of claims 1 to 9.

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