Pressure-measurable arc heater high-pressure erosion test particle broadcast mixing chamber

Abstract

The invention discloses a pressure-measurable arc heater high-pressure erosion test particle broadcast mixing chamber, which comprises: a mixing cavity, which is of a cylindrical tubular structure, and two end surfaces of which are provided with a plurality of through holes for circulation of a cooling liquid; the flange is connected to the mixing cavity and is used for realizing connection and sealing between the particle broadcasting and mixing chamber and other equipment and cooling the mixing cavity; the at least one filler neck is arranged on the side wall of the mixing cavity and is used for broadcasting particles into the mixing cavity; and the at least one pressure measuring filler neck is arranged in the mixing cavity and is used for measuring the pressure in the mixing cavity. According to the invention, stable operation of the particle erosion test under the conditions of high power and high arc chamber pressure can be realized, the pressure measuring function is realized, and the installation of test equipment is simplified.

Description

Technical Field

[0001] This invention relates to the field of aircraft thermal protection technology, and in particular to a pressure-measurable arc heater high-pressure erosion test particle seeding mixing chamber. Background Technology

[0002] When an aircraft flies within the atmosphere, particles such as dust, raindrops, snow crystals, and ice crystals collide with it at high speeds, significantly altering its aerodynamic shape and characteristics, thus severely impacting its accuracy and survivability. While there are many methods for testing the particle erosion resistance of heat-resistant materials, considering factors such as the degree of simulation of real-world conditions and experimental costs, the most commonly used method currently is the electric arc heater particle ablation / erosion test. This involves using a particle seeding device to deliver particles to a designated area according to pre-set parameters.

[0003] Current particle seeding devices suffer severe burnout during high-power, high-arc-chamber-pressure tests, making them unsuitable for high-arc-chamber-pressure erosion tests. Furthermore, they lack pressure measurement capabilities, requiring the installation of additional pressure measurement equipment. Summary of the Invention

[0004] The technical problem solved by this invention is to overcome the shortcomings of the prior art and provide a pressure-measurable electric arc heater high-pressure erosion test particle seeding and mixing chamber, so as to realize the particle erosion test under high power and high arc chamber pressure conditions and simplify the installation of test equipment.

[0005] The technical solution of this invention is: to provide a pressure-measurable arc heater high-pressure erosion test particle seeding and mixing chamber, comprising: The mixing chamber is a cylindrical tubular structure with multiple through holes on both ends for coolant flow. A flange, connected to the mixing chamber, is used to connect and seal the particle seeding mixing chamber to other equipment, and to cool the mixing chamber; At least one nozzle is disposed on the side wall of the mixing chamber for seeding particles into the mixing chamber; At least one pressure measuring nozzle is provided in the mixing chamber for measuring the pressure inside the mixing chamber.

[0006] Furthermore, the through hole starts at one end face of the mixing chamber, passes through the mixing chamber, and terminates at the other end face.

[0007] Furthermore, the through holes are evenly arranged circumferentially along the end face of the mixing chamber.

[0008] Furthermore, the through holes are arranged in the grooves on the end face.

[0009] Furthermore, there are multiple connecting nozzles, which are evenly arranged around the circumference of the mixing chamber.

[0010] Furthermore, there are four nozzles that broadcast particles into the mixing chamber from mutually perpendicular directions.

[0011] Furthermore, the pressure measuring nozzle is located on the side wall downstream of the mixing chamber.

[0012] Furthermore, there are multiple pressure measuring nozzles arranged at intervals along the circumference of the mixing chamber to measure the pressure at different locations within the mixing chamber.

[0013] The present invention also relates to a high-pressure erosion test system for an electric arc heater, comprising a pressure-measurable particle seeding and mixing chamber for high-pressure erosion test of an electric arc heater as described above.

[0014] The advantages of this invention compared to the prior art are: (1) The particle seeding mixing chamber proposed in this invention has a pressure measuring nozzle installed downstream of the mixing chamber. Compared with the existing particle seeding device, it has a pressure measuring function and simplifies the installation of the test equipment. (2) The particle seeding mixing chamber proposed in this invention has a better cooling effect and a significantly improved service life compared with existing particle seeding devices. It is also better suited to the requirements of high-pressure particle erosion tests of electric arc heaters, and can achieve high-pressure, low-enthalpy, high-efficiency and stable operation of particle erosion tests. Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of the particle seeding mixing chamber of the present invention; Figure 2 This is a side view of the particle seeding mixing chamber of the present invention. Detailed Implementation

[0016] To better understand the technical solution of the present invention, the specific embodiments of the present invention are described below.

[0017] like Figure 1 and Figure 2 As shown, the pressure-measurable arc heater high-pressure erosion test particle seeding and mixing chamber proposed in this invention includes: The mixing chamber 1 is a cylindrical tubular structure with a certain number of through holes arranged in the groove on its end face; Flange 2, which connects to the mixing chamber, facilitates cooling of the mixing chamber and enables connection and sealing with other equipment; Connect nozzle 3, which is connected to the mixing chamber for particle seeding; Pressure measuring nozzle 4 is connected to the mixing chamber for pressure measurement.

[0018] Preferably, the through hole of the mixing chamber starts at one end face of the mixing chamber and ends at the other end face of the mixing chamber, without any interruption in between, to ensure the cooling effect and strength of the mixing chamber.

[0019] Preferably, the through holes are evenly arranged circumferentially along the end face of the mixing chamber.

[0020] Preferably, the flange should simultaneously ensure both cooling effect and strength.

[0021] Preferably, the connecting nozzles are evenly distributed around the mixing chamber to ensure uniform particle distribution.

[0022] Preferably, there are four nozzles that broadcast particles into the mixing chamber from mutually perpendicular directions.

[0023] Preferably, the pressure measuring nozzle is installed downstream of the mixing chamber to ensure the accuracy of the pressure measurement.

[0024] Preferably, there are multiple pressure measuring nozzles arranged at intervals along the circumference of the mixing chamber to measure the pressure at different locations within the mixing chamber.

[0025] Preferably, the mixing chamber 1 and the flange 2 are sealed with a sealing ring to ensure that the sealing surface does not leak water under a water pressure of 5 MPa.

[0026] It is understood that this invention has been described through embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this invention. Furthermore, under the teachings of this invention, these features and embodiments can be modified to adapt to specific circumstances without departing from the spirit and scope of this invention. Therefore, this invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are protected by this invention.

[0027] The contents not described in detail in this specification are common knowledge to those skilled in the art.

Claims

1. A pressure-measurable arc heater for high-pressure erosion testing particle seeding and mixing chamber, characterized in that, include: The mixing chamber (1) is a cylindrical tubular structure with multiple through holes for coolant flow on both ends. Flange (2) is connected to the mixing chamber to realize the connection and sealing of the particle seeding mixing chamber with other equipment, and to cool the mixing chamber; At least one nozzle (3) is provided on the side wall of the mixing chamber for seeding particles into the mixing chamber; At least one pressure measuring nozzle (4) is provided in the mixing chamber for measuring the pressure inside the mixing chamber.

2. The pressure-measurable arc heater high-pressure erosion test particle seeding and mixing chamber according to claim 1, characterized in that: The through hole starts at one end face of the mixing chamber, passes through the mixing chamber, and ends at the other end face.

3. The pressure-measurable arc heater high-pressure erosion test particle seeding and mixing chamber according to claim 2, characterized in that: The through holes are evenly arranged circumferentially along the end face of the mixing chamber.

4. The pressure-measurable arc heater high-pressure erosion test particle seeding and mixing chamber according to claim 2, characterized in that: The through holes are arranged in the grooves on the end face.

5. The pressure-measurable arc heater high-pressure erosion test particle seeding and mixing chamber according to claim 1, characterized in that: The connecting nozzles (3) are multiple and are evenly arranged around the circumference of the mixing chamber.

6. The pressure-measurable arc heater high-pressure erosion test particle seeding and mixing chamber according to claim 5, characterized in that: The nozzles (3) are four in number, which broadcast particles into the mixing chamber from mutually perpendicular directions.

7. The pressure-measurable arc heater high-pressure erosion test particle seeding and mixing chamber according to claim 1, characterized in that: The pressure measuring nozzle (4) is located on the side wall downstream of the mixing chamber.

8. The pressure-measurable arc heater high-pressure erosion test particle seeding and mixing chamber according to claim 1, characterized in that: The pressure measuring nozzles (4) are multiple and are arranged at intervals along the circumference of the mixing chamber to measure the pressure at different positions in the mixing chamber.

9. A high-pressure erosion test system for an electric arc heater, characterized in that, include: The pressure-measurable arc heater high-pressure erosion test particle seeding mixing chamber as described in any one of claims 1 to 8.

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