Electrode insulation water cooling assembly for use in radiation heating experimental chamber and installation method

Abstract

This electrode insulation water-cooling assembly and installation method for use within a radiant heating test chamber relates to the field of material radiant heating testing. It primarily consists of a metal hose, a flange, an insulator, and a metal pipe sleeve. One end of the metal hose is welded to the flange, which is bolted to the insulator, which is also bolted to the metal pipe sleeve. The insulator seals the flange and the metal pipe sleeve, respectively. The simple structure and easy installation and disassembly effectively address the insulation issues associated with electrode water cooling within a radiant heating test chamber, preventing the risk of electrical charges from contact between the metal water pipe and other components.

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 experimental cabin. Background Art

[0002] With the rapid development of aerospace technology, aircraft speeds are constantly increasing, and the resulting aerodynamic heating problem is becoming increasingly serious. Severe aerodynamic heating during high-speed flight causes the aircraft body to generate high temperatures, significantly reducing the strength limit of high-speed aircraft materials and the load-bearing capacity of the aircraft structure, causing thermal deformation of the structure, damaging the aerodynamic shape of components, and affecting the safety performance of the aircraft structure. Therefore, the thermal protection and thermal strength of aerospace materials and structures have become critical to the success of aircraft development. To simulate the high-temperature thermal environment of an aircraft, conducting ground tests is one of the effective means of studying the thermal protection properties of materials. Due to the excellent properties of quartz lamp heaters, 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 testing method that uses thermal radiation as the primary form of heat transfer. Typically, a quartz lamp heater, model, and model support are installed within a test chamber, where material thermal resistance tests are conducted under varying degrees of vacuum. This presents a problem: For components within the chamber that require water cooling, conventional rubber hoses cannot safely and reliably operate in the high-temperature radiation environment of the chamber for extended periods. Furthermore, metal hoses, due to their electrical conductivity, cannot directly connect to the heater electrodes within the chamber, preventing them from delivering cooling water to the heater electrodes 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 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 in this application are as follows:

[0006] An electrode insulation water-cooling assembly for use inside a radiation heating experimental chamber 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 inside the radiation heating experimental chamber via an internal pipe thread, and the thread is tightened to compress a rubber gasket located between the two components; after the tubular electrode and the metal sleeve are connected, 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 and the metal sleeve are connected; a through hole is provided in 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, which is located on the outside of the through hole. The bottom of the annular groove is provided with multiple countersunk through holes. The end surface of the metal sleeve facing the insulating ring is provided with a second threaded hole, which corresponds one-to-one to the countersunk through hole. 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, which are blind holes closed at one end facing the metal sleeve 4. The first connecting bolt passes through the metal flange and is threadedly connected to the first threaded hole 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 provided 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 provided 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] An internal thread is provided on the inner wall of the metal sleeve, 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, pass the first connecting bolt through the metal flange and thread it into the first threaded hole of the insulating ring;

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

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

[0019] The present invention discloses an electrode insulation water-cooling assembly for use inside a radiation heating experimental chamber. The assembly has a simple structure and is easy to install and disassemble. It can effectively solve the insulation problem of electrode water cooling inside the radiation heating experimental chamber while avoiding the risk of metal water pipes becoming electrified due to 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 inside a radiation heating experimental chamber according to the present invention.

[0021] Explanation of the accompanying figures: 1. Metal hose; 2. Metal flange; 3. Insulation 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 present embodiment discloses an electrode insulation and water-cooling assembly for use inside a radiant heating test chamber. The assembly primarily comprises a metal hose 1, a metal flange 2, an insulating ring 3, a metal sleeve 4, several 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 metal sleeve 4 are bolted to different end faces of the insulating ring 3. The other end of the metal sleeve 4 is connected to the external thread of a heater tubular electrode inside the radiant heating test chamber via internal pipe threads. A through-hole is provided along the axis of the tubular electrode. After the metal sleeve 4 and the tubular electrode are screwed together, a rubber gasket 5 is compressed between the two components. When the tubular electrode and metal sleeve are connected, a cooling water channel is formed. The rubber gasket 5 seals the cooling channel from the outside of the tube after the tubular electrode and metal sleeve are connected. One end of the metal hose 1 is connected to a cooling water source. The cooling water flows through the metal hose 1, metal flange 2, insulating ring 3, metal sleeve 4, and the through-hole in the tubular electrode, exiting 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, located outside the through hole. The bottom of the annular groove is provided with multiple countersunk through holes. 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 as the countersunk through holes on the insulating ring 3, and the same number of second threaded holes. The second threaded holes correspond one-to-one with the countersunk through holes. The second connecting bolt passes through the countersunk through holes and is threaded into the second threaded hole of the metal sleeve 4. This completes the connection between the metal sleeve 4 and one end of the insulating ring 3.

[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. The first connecting bolt passes through the metal flange 2 and is threadedly connected to the first threaded holes of the insulating ring 3. Thus, the metal flange 2 is connected to one end of the insulating ring 3.

[0027] The countersunk through hole extends through the end of the insulating ring 3 facing the metal sleeve 4, so that the countersunk through hole and the threaded hole are 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 on the end facing the metal sleeve 4.

[0028] A first sealing ring is installed between metal flange 2 and insulating ring 3, located between the through-hole and the first threaded hole. A second sealing ring is installed within a sealing annular groove on the end face of metal sleeve 4, located between the through-hole and the second threaded hole. This ensures a seal between metal flange 2 and insulating ring 3, as well as between insulating ring 3 and metal sleeve 4.

[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 to 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 are common knowledge to those skilled in the art.

[0035] The present application has been described in detail above with reference to specific embodiments and exemplary examples. However, these descriptions should not be construed as limiting the present application. Those skilled in the art will appreciate that, without departing from the spirit and scope of the present application, various equivalent substitutions, modifications, or improvements may be made to the technical solutions and implementations of the present application, all of which fall within the scope of the present application. The scope of protection of the present application shall be determined by the appended 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 use in 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 use in 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 use in 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 to the first threaded holes of the insulating ring (3).

5. The electrode insulation water cooling assembly for use in 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 use in 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 use in a radiation heating experimental chamber according to claim 3, 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 use in a radiation heating experimental chamber according to claim 1, characterized in that: An internal thread is provided on the inner wall of the metal sleeve (4), and the specification of the internal thread 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 8, 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 is passed through the metal flange (2) and 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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