Temperature and pressure signal integrated transmission device suitable for high-speed rotating pressure vessel

Abstract

The invention relates to the technical field of rotating machinery testing, and particularly discloses a temperature and pressure signal integrated transmission device suitable for a high-speed rotating pressure vessel, which comprises a substrate, at least one multi-core electric connector and a plurality of pressure signal joints. The base plate is in bolted connection with the outer side of the bottom plate of the rotary pressure vessel, the sealing ring is arranged between the base plate and the bottom plate, preliminary sealing can be achieved through bolt pretightening force under the static condition, and the sealing effect is further enhanced through centrifugal force during high-speed rotation. The multi-core electric connector is embedded in the substrate, one end of the multi-core electric connector is connected with the in-cavity experiment piece, and the other end of the multi-core electric connector is connected to an external static data acquisition system, so that unified transmission of multiple paths of temperature and pressure signals and a power circuit is realized; and the pressure signal joints are densely distributed on the two sides of the multi-core electric connector and are fixedly connected with the substrate. The device is compact in structure, high reliability, anti-interference performance and dynamic sealing performance of signal transmission are considered, and the device is particularly suitable for internal testing application of high-speed rotating parts such as aero-engines and gas turbines.

Description

Technical Field

[0001] This invention relates to the field of rotating machinery testing technology, and in particular to an integrated transmission device for temperature and pressure signals suitable for high-speed rotating pressure vessels. Background Technology

[0002] In the research and development of high-end equipment such as aero-engines and heavy-duty gas turbines, it is necessary to accurately measure the flow and heat transfer characteristics of the working fluid within a high-pressure, high-speed rotating cavity. This requires arranging a large number of temperature (such as thermocouples) and pressure measuring points on the bottom plate of the rotating cavity, reliably transmitting the measurement signals to a stationary data acquisition system, and simultaneously supplying power to the test specimen inside the cavity.

[0003] However, the base plate of the rotating cavity is highly functional, requiring the simultaneous provision of working fluid inlets and outlets, cooling channels, etc., resulting in extremely limited area available for arranging signal transmission interfaces. Achieving the penetration of dozens of signals within this extremely narrow space faces three major challenges: First, the challenge of high-density integration: conventional commercial connectors are large and have a limited number of pins, making it impossible to lay out a sufficient number of channels in such a small space. Second, the challenge of dynamic sealing and reliability: under high-speed rotation (generating huge centrifugal force) and high-pressure conditions, the cavity must be absolutely airtight, while all electrical connections must remain stable and reliable under continuous vibration. Third, the challenge of signal integrity: weak thermocouple signals are susceptible to electromagnetic interference from power supply lines and other signals, and the temperature difference of the connector itself introduces additional thermoelectric potential, causing temperature measurement errors.

[0004] Existing technologies often rely on simple assembly of standard components, resulting in low integration, susceptibility to leakage under rotation, inaccurate signals, and poor reliability, making them unsuitable for extreme testing requirements. Therefore, there is an urgent need in this field for a highly integrated and reliable signal transmission solution specifically designed for high-speed, high-pressure rotating environments. Summary of the Invention

[0005] To overcome the shortcomings of the prior art, the present invention provides an integrated transmission device for temperature and pressure signals suitable for high-speed rotating pressure vessels. This device can simultaneously realize high-density, high-reliability, and high-precision transmission of multiple temperature and pressure signals within an extremely narrow space at the bottom of the rotating pressure vessel, and ensure reliable sealing throughout the entire process from static to dynamic.

[0006] To achieve the above objectives, the present invention provides the following solution: an integrated transmission device for temperature and pressure signals suitable for high-speed rotating pressure vessels, comprising: a base plate bolted to the outside of the bottom plate of the rotating pressure vessel, wherein a sealing ring is provided between the base plate and the bottom plate of the rotating pressure vessel; at least one multi-core electrical connector embedded and fixed on the base plate, having conductive pins inside; one end of the multi-core electrical connector is connected to a test piece inside the cavity of the rotating pressure vessel, and the other end is connected to an external static data acquisition system to realize integrated transmission of multiple temperature, pressure signals and power supply lines; multiple pressure signal connectors are densely arranged on both sides of the multi-core electrical connector and fixedly connected to the base plate.

[0007] In one alternative, the substrate is provided with a sealing ring groove for accommodating the sealing ring. Under static conditions, initial sealing is achieved by bolt preload, and the sealing effect is enhanced by centrifugal force during high-speed rotation.

[0008] In one alternative, the body of the multi-core electrical connector is a heat spreader made of high thermal conductivity aluminum alloy to reduce parasitic thermoelectric potential and improve the temperature measurement accuracy of the thermocouple.

[0009] In one alternative, the heat spreader of the electrical connector has an elongated elliptical plate structure, integrally formed from aluminum alloy material with high thermal conductivity, and its thickness is optimized to ensure good heat conduction uniformity.

[0010] In one alternative, the overall Biwo number of the vapor chamber for the electrical connector is less than 0.1.

[0011] In one alternative, the conductive pins inside the multi-core electrical connector are gold-plated to reduce contact resistance and enhance corrosion resistance.

[0012] In one alternative, grounding shield pins are spaced apart between the conductive pins to form an internal electromagnetic shielding structure, thereby suppressing electromagnetic crosstalk and ensuring the integrity of signal transmission.

[0013] In one alternative, the pressure signal connector is a self-locking quick connector and is fixed to the base plate by a threaded connection.

[0014] In one alternative, the pressure signal connectors are arranged symmetrically on both sides of the multi-core electrical connector.

[0015] In one alternative embodiment, the multi-core electrical connector is provided in two sets, with the two sets of multi-core electrical connectors located on both sides of the rotating pressure vessel cavity, and the two sets of multi-core electrical connectors adopt a double-sided male design.

[0016] Compared with the prior art, the present invention discloses at least the following beneficial effects:

[0017] The temperature and pressure signal integrated transmission device provided by this invention, connected to the bottom plate of a rotating pressure vessel by bolts and equipped with a sealing ring, achieves initial sealing under static conditions relying on bolt preload, and further enhanced dynamic sealing under high-speed rotation by centrifugal force, effectively preventing gas leakage and improving sealing reliability. Simultaneously, the embedded fixing of multi-core electrical connectors and the dense arrangement of pressure signal connectors enable efficient integration of multiple temperature and pressure signals within an extremely narrow space, overcoming the limitations of traditional connectors' large size and limited pin count, and meeting the requirements of high-density wiring. Furthermore, this compact structure ensures stable signal transmission under high-speed rotation, high pressure, and continuous vibration environments, reducing electromagnetic interference and signal attenuation, thereby significantly improving measurement accuracy and overall system reliability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram showing the installation location of the temperature and pressure signal integrated transmission device of the present invention;

[0020] Figure 2 This is a top view of the temperature and pressure signal integrated transmission device of the present invention;

[0021] Figure 3 This is a partial cross-sectional view from the main view perspective of the temperature and pressure signal integrated transmission device of the present invention.

[0022] Figure 4 This is an installation effect diagram of the temperature and pressure signal integrated transmission device of the present invention in use.

[0023] In the figure: 100, integrated temperature and pressure signal transmission device; 101, substrate; 102, multi-core electrical connector; 103, pressure signal connector; 104, clamping bolt; 105, electrical connector heat spreader; 106, conductive pin; 107, sealing ring groove; 200, rotating pressure vessel; 201, rotating pressure vessel base plate; 202, rotating pressure vessel cavity. Detailed Implementation

[0024] 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.

[0025] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Reference Figures 1 to 4 As shown, this embodiment provides a temperature and pressure signal integrated transmission device suitable for high-speed rotating pressure vessels. The temperature and pressure signal integrated transmission device 100 includes a substrate 101, at least one specially designed multi-core electrical connector 102, and a plurality of densely arranged pressure signal connectors 103.

[0027] like Figure 1 As shown, the temperature and pressure signal integrated transmission device 100 is fixed to the outer mounting plane of the rotating pressure vessel base plate 201 by bolts. In a static state, the initial seal is achieved by tightening the sealing ring with the bolt preload. Specifically, the interior of the rotating pressure vessel 200 is a rotating pressure vessel cavity 202, and the rotating pressure vessel base plate 201 is bolted to the outside of the rotating pressure vessel cavity 202. The base plate 101 of the temperature and pressure signal integrated transmission device 100 is fixed to a preset mounting position on the outer side of the rotating pressure vessel base plate 201 by clamping bolts 104. It should be understood that both the base plate 101 and the rotating pressure vessel base plate 201 have through holes for accommodating the pressure signal connector 103 to pass through and enter the rotating pressure vessel cavity 202.

[0028] In embodiments of the present invention, such as Figure 3 As shown, a sealing ring groove 107 is provided on the base plate 101 to accommodate the sealing ring. Under static conditions, initial sealing is achieved through bolt preload. When the device rotates at high speed, the entire device is pushed towards the mounting plane under centrifugal force. The centrifugal force is converted into additional clamping force, dynamically enhancing the sealing effect and effectively preventing gas leakage. This layout makes full use of the outer position of the low-radius surface of the rotating high-pressure chamber to maximize the positive effect of centrifugal force.

[0029] In one specific embodiment, the substrate 101 is preferably made of high-strength alloy steel to ensure structural stability and load-bearing capacity under high-speed rotation and high-pressure conditions.

[0030] In one specific embodiment, such as Figure 1As shown, two sets of integrated temperature and pressure signal transmission devices 100 are installed on the bottom plate 201 of the rotating pressure vessel. The two sets of integrated temperature and pressure signal transmission devices 100 are bolted and sealed to both sides of the bottom plate 201 of the rotating pressure vessel. The two sets of multi-core electrical connectors 102 on both sides adopt a double-sided male design.

[0031] In this embodiment of the invention, a multi-core electrical connector 102 is embedded and fixed on the substrate 101, employing a custom design with dual male connectors to ensure that the connector maintains high dimensional stability and connection reliability even after multiple insertions and removals. The body of the multi-core electrical connector 102 is made of high thermal conductivity aluminum alloy material, and through precise calculation and design, its overall Biswell number is much less than 0.1, thus forming a homogeneous body. This characteristic stabilizes the cold junction compensation point of the thermocouple, fundamentally eliminating parasitic thermoelectric potential caused by temperature differences between different parts of the connector, and significantly improving the temperature measurement accuracy of the thermocouple.

[0032] In one specific embodiment, the conductive pins 106 inside the multi-core electrical connector 102 are gold-plated, which not only reduces contact resistance but also enhances corrosion resistance and ensures electrical connection stability during long-term use.

[0033] In one specific embodiment, dedicated grounding shielding pins are arranged at intervals between conductive pins 106 to form a highly efficient internal electromagnetic shielding structure, which effectively suppresses electromagnetic crosstalk between dissimilar signals and ensures the integrity of weak signal transmission.

[0034] In this embodiment of the invention, the pressure signal connector 103 is a self-locking quick connector, and multiple pressure signal connectors 103 are arranged symmetrically on both sides of the multi-core electrical connector 102 with extremely high density. These pressure signal connectors 103 are fixed to the substrate 101 by threaded connection, ensuring the connection is robust.

[0035] For unused pressure passages, use plugs of the corresponding diameter to seal from the high-pressure side inside the cavity to provide higher sealing reliability in high-pressure environments.

[0036] To further optimize the solution, this embodiment also designs a special tooling to address the difficulty of manual operation caused by the dense arrangement of pressure signal connectors 103. This tooling can simultaneously act on the locking sleeves of multiple pressure connectors, enabling the synchronous installation and disassembly of all pressure pipelines, significantly improving the maintenance efficiency and ease of operation of the equipment.

[0037] In one specific embodiment, such as Figure 2 and Figure 3As shown, the heat exchange plate 105 of the electrical connector is one of the core structural components of the multi-core electrical connector 102. The heat exchange plate 105 of the electrical connector is in close contact with the inner wall of the metal shell of the multi-core electrical connector 102 over a large area to ensure the temperature uniformity of the overall structure.

[0038] Furthermore, the heat spreader plate 105 of the electrical connector has an elongated elliptical plate structure and is integrally formed from aluminum alloy material with high thermal conductivity. Its thickness has been optimized to ensure good heat conduction uniformity.

[0039] In this embodiment, the heat exchange plate 105 of the electrical connector is not only the structural support foundation of the multi-core electrical connector 102, but more importantly, it becomes a key component that ensures that the entire signal transmission system can still achieve high-precision measurement under harsh working conditions such as high and low temperature alternation and high speed rotation by actively balancing the temperature field.

[0040] It should be understood that in practical applications, the temperature and pressure signal integrated transmission device 100 is connected to the experimental specimen inside the rotating cavity via a multi-core electrical connector 102, and to an external stationary data acquisition system at the other end, achieving high-density integrated transmission of multiple temperature, pressure signals, and power supply lines. For example, within an extremely limited space of only 150mm × 30mm, the temperature and pressure signal integrated transmission device 100 successfully integrates 25 thermocouple signals, 24 pressure signals, and the necessary power supply lines, fully demonstrating its excellent space utilization capabilities. Simultaneously, the temperature homogenizer design and internal shielding layout jointly ensure the accuracy and stability of signal transmission. Especially under extreme conditions of high speed, high pressure, and vibration, the device, with its centrifugal force-enhanced sealing mechanism and optimized electrical contact design, exhibits long-term operational reliability and leak-free performance.

[0041] In summary, the temperature and pressure signal integrated transmission device of this embodiment effectively solves the technical challenges of high-density transmission of multiple signals, dynamic sealing, and signal integrity in extremely narrow spaces of rotating pressure vessels through multiple innovations in structure, materials, and functions, providing strong technical support for the research and development of high-end equipment such as aero engines and heavy-duty gas turbines.

[0042] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0043] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A temperature and pressure signal integrated transmission device suitable for high-speed rotating pressure vessels, characterized in that, include: The base plate (101) is bolted to the outside of the rotating pressure vessel base plate (201), and a sealing ring is provided between the base plate (101) and the rotating pressure vessel base plate (201). At least one multi-core electrical connector (102) is embedded and fixed on the substrate (101) and has conductive pins (106) inside; one end of the multi-core electrical connector (102) is connected to the experimental piece inside the rotating pressure vessel cavity (202) and the other end is connected to an external static data acquisition system; Multiple pressure signal connectors (103) are densely arranged on both sides of the multi-core electrical connector (102) and fixedly connected to the substrate (101).

2. The integrated temperature and pressure signal transmission device for high-speed rotating pressure vessels according to claim 1, characterized in that, The substrate (101) is provided with a sealing ring groove (107) for accommodating the sealing ring. Under static conditions, the initial sealing is achieved by the bolt preload, and the sealing effect is enhanced by centrifugal force during high-speed rotation.

3. The integrated temperature and pressure signal transmission device for high-speed rotating pressure vessels according to claim 1, characterized in that, The body of the multi-core electrical connector (102) is an electrical connector heat spreader (105) made of high thermal conductivity aluminum alloy.

4. The integrated temperature and pressure signal transmission device for high-speed rotating pressure vessels according to claim 3, characterized in that, The heat spreader plate (105) of the electrical connector has an elongated elliptical plate structure and is integrally formed from aluminum alloy material with high thermal conductivity.

5. The integrated temperature and pressure signal transmission device for high-speed rotating pressure vessels according to claim 3, characterized in that, The overall Biot number of the heat spreader plate (105) for the electrical connector is less than 0.

1.

6. The integrated temperature and pressure signal transmission device for high-speed rotating pressure vessels according to claim 1 or 3, characterized in that, The conductive pins (106) inside the multi-core electrical connector (102) are gold-plated.

7. The integrated temperature and pressure signal transmission device for high-speed rotating pressure vessels according to claim 6, characterized in that, Grounding shielding pins are arranged at intervals between the conductive pins (106) to form an internal electromagnetic shielding structure.

8. The integrated temperature and pressure signal transmission device for high-speed rotating pressure vessels according to claim 1, characterized in that, The pressure signal connector (103) is a self-locking quick connector and is fixed to the base plate (101) by a threaded connection.

9. The integrated temperature and pressure signal transmission device for high-speed rotating pressure vessels according to claim 1, characterized in that, The pressure signal connectors (103) are arranged symmetrically on both sides of the multi-core electrical connector (102).

10. The integrated temperature and pressure signal transmission device for high-speed rotating pressure vessels according to claim 1, characterized in that, The multi-core electrical connector (102) is provided in two sets, and the two sets of multi-core electrical connectors (102) are located on both sides of the rotating pressure vessel cavity (202). The two sets of multi-core electrical connectors (102) adopt a double-sided male design.

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