Electrode insulation water cooling assembly used in radiation heating experiment module and installation method

Abstract

The invention discloses an electrode insulation water-cooling assembly used in a radiation heating experiment module and an installation method, and relates to the field of material radiation heating tests, and the electrode insulation water-cooling assembly mainly comprises a metal hose, a flange, an insulation part and a metal pipe sleeve. One end of the metal hose is welded with the flange, the flange is connected with the insulating part through a bolt, the insulating part is connected with the metal pipe sleeve through a bolt, and the insulating part is respectively subjected to end face sealing with the flange and the metal pipe sleeve. The structure is simple, installation and disassembly are convenient, the insulation problem of electrode water cooling in the radiation heating experiment module can be well solved, and the risk that a metal water pipe makes contact with other parts to cause electrification is avoided.

Description

Technical Field

[0001] The present application belongs to the field of aircraft ground test technology, and in particular relates to an electrode insulation water cooling assembly for use in a radiation heating test cabin. Background Art

[0002] With the rapid development of aerospace technology, the flight speed of aircraft is constantly increasing, and the resulting aerodynamic heat problems are becoming more and more serious. Severe aerodynamic heating during high-speed flight of aircraft causes high temperatures in the aircraft body, which will significantly reduce the strength limit of high-speed aircraft materials and the bearing capacity of aircraft structures, causing thermal deformation of the structure, destroying the aerodynamic shape of components and affecting the safety performance of the aircraft structure. Therefore, the thermal protection and thermal strength issues of aerospace materials and structures have become the key to the success of aircraft development. In order to simulate the high-temperature thermal environment of the aircraft, conducting ground tests is one of the effective means to study the thermal protection performance of materials. Since the quartz lamp heater has its own excellent characteristics, the quartz lamp radiation aerodynamic thermal environment simulation test technology is a very important test method for reproducing the thermal environment of hypersonic aircraft.

[0003] Quartz lamp heating technology is a thermal test method that uses thermal radiation as the main form of heat exchange. Usually, the quartz lamp heater, model, and model bracket are installed inside an experimental chamber, and then the material heat protection test verification under different vacuum degrees is carried out inside the experimental chamber. This creates a problem. The parts inside the experimental chamber need to be water-cooled. The commonly used rubber hose cannot operate safely and reliably for a long time in the high-temperature radiation environment inside the experimental chamber. The metal hose cannot be directly connected to the heater electrode inside the experimental chamber due to its electrical conductivity, so it is impossible to send cooling water to the heater electrode for cooling. Summary of the invention

[0004] The technical problem solved by the present application is: to overcome the deficiencies of the prior art and to provide an electrode insulation water cooling assembly for use inside a radiation heating experimental chamber, which can achieve real-time cooling of the heater electrode during its operation.

[0005] The technical solutions provided by this application are as follows:

[0006] An electrode insulation water cooling component used in a radiation heating experimental cabin comprises a metal hose, a metal flange, an insulating ring and a metal sleeve; the metal hose is connected to a cooling water source; one end of the metal hose is fixedly connected to the metal flange, the metal flange is connected to one end of the insulating ring, one end of the metal sleeve is connected to the other end of the insulating ring, the other end of the metal sleeve is connected to the external thread of a heater tubular electrode in the radiation heating experimental cabin through an internal pipe thread, and the thread is tightened to compress a rubber gasket located between the two components; after the tubular electrode is connected to the metal sleeve, a cooling water channel is formed as a whole, and the rubber gasket is used to achieve the sealing problem of the water cooling channel and the outside of the tube after the tubular electrode is connected to the metal sleeve; a through hole is provided on the insulating ring to enable the metal hose and the metal sleeve to communicate through the insulating ring.

[0007] The insulating ring is made of boron nitride or corundum.

[0008] The end surface of the insulating ring facing the metal flange is provided with an annular groove, the annular groove is located on the outside of the through hole, a plurality of countersunk through holes are provided at the bottom of the annular groove, and the end surface of the metal sleeve facing the insulating ring is provided with a second threaded hole, the second threaded hole corresponds to the countersunk through hole one by one, and the second connecting bolt passes through the countersunk through hole and is threadedly connected to the second threaded hole of the metal sleeve.

[0009] The end surface of the insulating ring facing the metal flange is provided with a plurality of circumferentially distributed first threaded holes, the first threaded holes are blind holes closed at one end facing the metal sleeve 4, and the first connecting bolts pass through the metal flange and are threadedly connected to the first threaded holes of the insulating ring.

[0010] The first threaded hole and the countersunk through hole are staggered with each other in the circumferential direction of the insulating ring.

[0011] A first sealing ring is arranged between the metal flange and the insulating ring, and the first sealing ring is located between the through hole and the first threaded hole.

[0012] A second sealing ring is arranged between the metal sleeve and the insulating ring, and the second sealing ring is located between the through hole and the second threaded hole.

[0013] The inner wall of the metal sleeve is provided with an internal thread, and the specification of the internal thread matches the thread of the heater electrode.

[0014] A method for installing an electrode insulation water cooling assembly inside a radiation heating experimental chamber, comprising:

[0015] First, pass the second connecting bolt through the countersunk through hole and thread it into the second threaded hole of the metal sleeve;

[0016] Then, the first connecting bolt passes through the metal flange and is threadedly connected to the first threaded hole of the insulating ring;

[0017] The other end of the metal sleeve is connected to the heater electrode inside the radiation heating experimental chamber.

[0018] In summary, this application at least includes the following beneficial technical effects:

[0019] The present invention discloses an electrode insulation water cooling component for use in a radiation heating experimental cabin. The component has a simple structure and is easy to install and disassemble. The component can well solve the insulation problem of the electrode water cooling in the radiation heating experimental cabin while avoiding the risk of metal water pipes being electrified when in contact with other components. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of an electrode insulation water cooling assembly for use in a radiation heating experimental chamber according to the present invention.

[0021] Explanation of the accompanying figures: 1. Metal hose; 2. Metal flange; 3. Insulating ring; 4. Metal sleeve. DETAILED DESCRIPTION

[0022] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments disclosed in the present invention will be further described in detail below with reference to the accompanying drawings.

[0023] like Figure 1 As shown, the embodiment of the present application discloses an electrode insulation water cooling assembly for the inside of a radiation heating test chamber, which is mainly composed of a metal hose 1, a metal flange 2, an insulating ring 3, a metal sleeve 4, a number of bolts and two O-rings. One end of the metal hose 1 is welded to the metal flange 2, and the metal flange 2 and the metal sleeve 4 are respectively connected to different end faces of the insulating ring 3 by bolts. The other end of the metal sleeve 4 is connected to the external thread of the heater tubular electrode inside the radiation heating test chamber through the internal pipe thread, and a through hole is provided at the axial position of the tubular electrode. After the metal sleeve 4 and the tubular electrode are tightened, the rubber gasket 5 located between the two components is pressed; after the tubular electrode is connected to the metal sleeve, a cooling water channel is formed as a whole, and the rubber gasket 5 is used to achieve the sealing problem of the water cooling channel and the outside of the tube after the tubular electrode is connected to the metal sleeve. One end of the metal hose 1 is connected to the cooling water source, and the cooling water source passes through the metal hose 1, the metal flange 2, the insulating ring 3, the metal sleeve 4 and the through hole in the tubular electrode in turn, and flows out from the other end of the through hole. Achieve cooling of the tubular electrode.

[0024] The insulating ring 3 is made of boron nitride or corundum.

[0025] The end surface of the insulating ring 3 facing the metal flange 2 is provided with an annular groove, which is located outside the through hole, and a plurality of countersunk through holes are provided at the bottom of the annular groove. The end surface of the metal sleeve 4 facing the insulating ring 3 is provided with second threaded holes located on the same pitch circle and the same number as the countersunk through holes on the insulating ring 3. The second threaded holes correspond to the countersunk through holes one by one, and the second connecting bolt passes through the countersunk through holes and is threadedly connected to the second threaded hole of the metal sleeve 4. The connection between the metal sleeve 4 and one end of the insulating ring 3 is realized.

[0026] The end surface of the insulating ring 3 facing the metal flange 2 is provided with a plurality of first threaded holes distributed circumferentially, and the first connecting bolts pass through the metal flange 2 and are threadedly connected in the first threaded holes of the insulating ring 3. The connection between the metal flange 2 and one end of the insulating ring 3 is realized.

[0027] The countersunk through hole penetrates to the end of the insulating ring 3 facing the metal sleeve 4, so that the countersunk through hole and the threaded hole are respectively located on two different end surfaces of the insulating ring 3; the first threaded hole and the countersunk through hole are staggered at a certain angle in the circumferential direction. The first threaded hole is a blind hole with one end closed, and the first threaded hole is closed toward the end of the metal sleeve 4.

[0028] A first sealing ring is provided between the metal flange 2 and the insulating ring 3, and the first sealing ring is located between the through hole and the first threaded hole. A sealing annular groove is provided on the end surface of the metal sleeve 4, and a second sealing ring is provided in the sealing annular groove, and the second sealing ring is located between the through hole and the second threaded hole. The sealing between the metal flange 2 and the insulating ring 3, and between the insulating ring 3 and the metal sleeve 4 is achieved.

[0029] The inner wall of the metal sleeve 4 is provided with an internal thread of a certain length, the specification of which matches the heater electrode thread of the application scenario, so as to connect the metal sleeve 4 with the heater electrode.

[0030] A method for installing an electrode insulation water cooling assembly inside a radiation heating experimental chamber, comprising:

[0031] First, pass the second connecting bolt through the countersunk through hole and thread it into the second threaded hole of the metal sleeve 4;

[0032] Then, pass the first connecting bolt through the metal flange 2 and thread it into the first threaded hole of the insulating ring 3;

[0033] The other end of the metal sleeve 4 is connected to the heater electrode inside the radiation heating experimental chamber.

[0034] The contents not described in detail in this application specification belong to the common knowledge of those skilled in the art.

[0035] The present application is described in detail above in conjunction with specific implementation methods and exemplary examples, but these descriptions cannot be understood as limiting the present application. Those skilled in the art understand that, without departing from the spirit and scope of the present application, a variety of equivalent replacements, modifications or improvements can be made to the technical solution of the present application and its implementation methods, all of which fall within the scope of the present application. The scope of protection of the present application shall be subject to the attached claims.

Claims

1. An electrode insulation water cooling assembly for use in a radiation heating experimental chamber, characterized in that: It comprises a metal hose (1), a metal flange (2), an insulating ring (3) and a metal sleeve (4); One end of the metal hose (1) is connected to a cooling water source; the other end of the metal hose (1) is fixedly connected to a metal flange (2), the metal flange (2) is connected to one end of an insulating ring (3), one end of a metal sleeve (4) is connected to the other end of the insulating ring (3), the other end of the metal sleeve (4) is connected to the external thread of the end of a tubular electrode of a heater inside a radiation heating experimental chamber through an internal pipe thread, a through hole is provided at the axial position of the tubular electrode, and after the tubular electrode and the metal sleeve are connected, a cooling water channel is formed as a whole; a through hole is provided at the center of the insulating ring (3) so that the metal hose (1) and the metal sleeve (4) are connected through the insulating ring (3).

2. The electrode insulation water cooling assembly for the interior of a radiation heating experimental chamber according to claim 1, characterized in that: The insulating ring (3) is made of boron nitride or corundum.

3. The electrode insulation water cooling assembly for the interior of a radiation heating experimental chamber according to claim 1, characterized in that: The end surface of the insulating ring (3) facing the metal flange (2) is provided with an annular groove, the annular groove is located outside the through hole, and a plurality of countersunk through holes are provided at the bottom of the annular groove. The end surface of the metal sleeve (4) facing the insulating ring (3) is provided with a second threaded hole, the second threaded hole corresponds to the countersunk through hole one by one, and the second connecting bolt passes through the countersunk through hole and is threadedly connected to the second threaded hole of the metal sleeve (4).

4. The electrode insulation water cooling assembly for the interior of a radiation heating experimental chamber according to claim 3, characterized in that: The end surface of the insulating ring (3) facing the metal flange (2) is provided with a plurality of first threaded holes distributed in a circumferential direction, the first threaded holes being blind holes closed at one end facing the metal sleeve 4, and the first connecting bolts passing through the metal flange (2) and being threadedly connected in the first threaded holes of the insulating ring (3).

5. The electrode insulation water cooling assembly for the interior of a radiation heating experimental chamber according to claim 4, characterized in that: The first threaded hole and the countersunk through hole are staggered with each other in the circumferential direction of the insulating ring (3).

6. The electrode insulation water cooling assembly for the interior of a radiation heating experimental chamber according to claim 4, characterized in that: A first sealing ring is provided between the metal flange (2) and the insulating ring (3), and the first sealing ring is located between the through hole and the first threaded hole.

7. The electrode insulation water cooling assembly for the interior of a radiation heating experimental chamber according to claim 3 is characterized in that: A second sealing ring is provided between the metal sleeve (4) and the insulating ring (3), and the second sealing ring is located between the through hole and the second threaded hole.

8. The electrode insulation water cooling assembly for the interior of a radiation heating experimental chamber according to claim 1, characterized in that: The inner wall of the metal sleeve (4) is provided with an internal thread, the specification of which matches the thread of the heater electrode.

9. A method for installing an electrode insulation water cooling assembly for use in a radiation heating experimental chamber according to any one of claims 1 to 9, characterized in that: include: First, the second connecting bolt is passed through the countersunk through hole and threadedly connected to the second threaded hole of the metal sleeve (4); Then, the first connecting bolt passes through the metal flange (2) and is threadedly connected to the first threaded hole of the insulating ring (3); The other end of the metal sleeve (4) is connected to the heater electrode inside the radiation heating experimental chamber.

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