High-pressure high-enthalpy electric arc heater

Abstract

The utility model discloses a high-pressure high-enthalpy electric arc heater, which relates to the technical field of electric arc heaters and comprises a heater main body, supporting plates are fixedly mounted at two ends of the bottom of the heater main body, a sealing valve is fixedly mounted at the top of the heater main body, and a sealing cover is fixedly mounted at one end of the heater main body. And a pressure release valve is fixedly installed on the surface of the sealing cover, an anode pipe is fixedly installed at the bottom of the sealing valve, and a spray pipe is fixedly installed at one end of the anode pipe. The heat insulation pipe, the clamping block, the limiting bolt, the dismounting hole, the connecting ring cover and the mounting bolt are matched with one another, so that the problem that the service life of a heat insulation mechanism is affected due to the fact that the heat insulation mechanism is complex in structure and not convenient to dismount and maintain is solved, the function of threaded dismounting is achieved, clamping mounting is achieved through the clamping block and the limiting bolt, and the service life of the heat insulation mechanism is prolonged. And a connecting ring cover and a mounting bolt are matched for threaded mounting, so that the device is conveniently dismounted and mounted, and the convenience of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric arc heaters, in particular to a high-pressure and high-enthalpy electric arc heater. Background Art

[0002] The arc heater test equipment is mainly composed of an arc heater, a power supply system, an air supply system, a water supply system, a control system, a test system, a data acquisition system, a model delivery system, etc. The arc heater uses an electric arc to heat the test gas to produce a device that can simulate the thermal environment during hypersonic flight. Compressed air with adjustable pressure and flow is injected into the arc heater, and the air is ionized by the power supply system to form a plasma arc, which heats the air to a high temperature state. Stable electrical parameters and airflow parameters ensure the accuracy of the required temperature. The high-temperature gas is accelerated to the required speed through the conical nozzle to form a high-enthalpy, high-speed airflow, and the model is aerodynamically heated in the test section.

[0003] In the existing technical solution, a high-pressure and high-enthalpy arc heater is proposed with publication number: CN109348563A, which includes a rear electrode connected in series to form a compression section group, wherein the rear electrode and the front electrode are respectively located at the two ends of the compression section group, wherein each compression section is connected in series with two connecting laminations, and the two connecting laminations are located at the two ends of each compression section, and among the multiple compression sections, the thickness of the laminations of the compression section close to the rear electrode is greater than the thickness of the laminations of the compression section close to the front electrode.

[0004] In order to solve the problem that the structure of the heater stack components is complex, which is not conducive to the convenient installation and disassembly of the device, thus affecting the disassembly and maintenance of the device, the prior art adopts a new design structure, simplifies the structure of the heater stack components, and handles it in a convenient installation manner. However, the structure of the thermal insulation mechanism is complex, which is not conducive to the convenient disassembly and maintenance of the device, thus affecting the service life of the thermal insulation mechanism. Utility Model Content

[0005] The purpose of the utility model is to provide a high-pressure and high-enthalpy arc heater to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A high-pressure and high-enthalpy arc heater comprises a heater body, support plates are fixedly mounted at both ends of the bottom of the heater body, a sealing valve is fixedly mounted on the top of the heater body, a sealing cover is fixedly mounted at one end of the heater body, and a pressure relief valve is fixedly mounted on the surface of the sealing cover.

[0008] An anode tube is fixedly mounted on the bottom of the sealing valve, a nozzle is fixedly mounted on one end of the anode tube, a cathode tube is fixedly mounted on the other end of the nozzle, an insulation tube is fixedly mounted on the outside of the cathode tube, and an insulation mechanism is arranged on the inside of the insulation tube.

[0009] A disassembly hole is provided on one side of the heat insulation pipe, and a disassembly mechanism is arranged inside the disassembly hole.

[0010] A further improvement of the technical solution of the utility model is that the heat insulation mechanism comprises an inner ring, the outer side of the inner ring is fixedly mounted on the inner side of the heat insulation pipe, and a heat storage pipe is fixedly mounted inside the inner ring.

[0011] By adopting the above technical solution, the inner ring, the insulation tube and the heat storage tube cooperate with each other to achieve the function of heat insulation protection.

[0012] A further improvement of the technical solution of the utility model is that a heat-insulating paint layer is arranged on the inner side of the inner ring, an inner pad is fixedly installed on the inner side of the heat-insulating paint layer, and a heat hole is opened inside the inner pad.

[0013] By adopting the above technical solution, the heat insulation function is achieved through the cooperation between the heat insulation coating layer, the inner pad and the heat hole.

[0014] A further improvement of the technical solution of the utility model is that a heat protection plate is fixedly installed inside the heat storage tube, and a steam groove is opened on the inner side of the heat storage tube.

[0015] A further improvement of the technical solution of the utility model is that a mounting plate is fixedly installed inside the steam tank, and adsorption cotton is fixedly installed on the surface of the mounting plate.

[0016] By adopting the above technical solution, the function of adsorption and heat preservation is achieved through the cooperation between the mounting plate and the adsorption cotton.

[0017] A further improvement of the technical solution of the utility model is that the disassembly mechanism comprises a mounting bolt, a connecting ring cover is movably mounted on the outer side of the mounting bolt, and a side surface of the connecting ring cover is arranged on one side of the cathode tube.

[0018] By adopting the above technical solution, the function of threaded installation is achieved through the cooperation between the mounting bolts and the connecting ring cover.

[0019] A further improvement of the technical solution of the utility model is that: clamping blocks are fixedly installed on both sides of the insulation pipe, and both ends of the clamping blocks are threadedly connected with limiting bolts.

[0020] By adopting the above technical solution, the clamping block and the limiting bolt cooperate with each other to achieve the function of clamping installation.

[0021] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0022] 1. The utility model provides a high-pressure and high-enthalpy arc heater, which solves the problem that the thermal insulation function of the heater is poor, the environment for heat protection and heating cannot be provided, and the stable operation of the device is not conducive to the cooperation of the inner ring, the thermal insulation coating layer, the inner pad and the heat hole. The function of isolating the temperature is achieved, and the thermal insulation coating layer and the inner pad are used for double-layer temperature isolation, which facilitates the device to perform the heat protection function and is conducive to the normal operation of the device.

[0023] 2. The utility model provides a high-pressure and high-enthalpy arc heater, which solves the problem that the heating environment of the heater is poor and the heat preservation function cannot be effectively performed, thereby affecting the stable operation of the device through the cooperation of a heat storage tube, a heat protection plate, a steam tank, a mounting plate and adsorption cotton. The function of adsorption and heat preservation is achieved, and the adsorption cotton is used to adsorb water vapor, and the heat protection plate is used to isolate the temperature, which is convenient for the device to be heat-insulated and conducive to the stable operation of the device.

[0024] 3. The utility model provides a high-pressure and high-enthalpy arc heater, which solves the problem that the structure of the thermal insulation mechanism is complex, which is not conducive to the convenient disassembly and maintenance of the device, thereby affecting the service life of the thermal insulation mechanism through the cooperation of the thermal insulation tube, the clamping block, the limit bolt, the disassembly hole, the connecting ring cover and the mounting bolt. The function of threaded disassembly is achieved, and the clamping installation is carried out by the clamping block and the limit bolt, and the threaded installation is carried out in conjunction with the connecting ring cover and the mounting bolt, which is conducive to the convenient disassembly and installation of the device and increases the convenience of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the cathode tube structure of the utility model;

[0027] Figure 3 This is a schematic diagram of the heat storage tube structure of the utility model;

[0028] Figure 4 This is a schematic diagram of the inner ring structure of the utility model;

[0029] Figure 5 This is a schematic diagram of the heat insulation pipe structure of the utility model.

[0030] In the figure: 1. heater body; 2. support plate; 3. sealing valve; 31. anode tube; 32. nozzle; 33. cathode tube; 34. insulation tube; 341. clamping block; 342. limit bolt; 343. disassembly hole; 35. connecting ring cover; 351. mounting bolt; 36. inner ring; 361. insulation coating layer; 362. inner pad; 363. heat hole; 37. heat storage tube; 371. heat protection plate; 372. steam tank; 373. mounting plate; 374. adsorption cotton; 4. sealing cover; 5. pressure relief valve. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the embodiments:

[0032] like Figure 1-5 As described above, the utility model provides the following technical solutions.

[0033] Example 1

[0034] The present embodiment provides a high-pressure and high-enthalpy arc heater, comprising a heater body 1, support plates 2 are fixedly installed at both ends of the bottom of the heater body 1, a sealing valve 3 is fixedly installed on the top of the heater body 1, a sealing cover 4 is fixedly installed at one end of the heater body 1, a pressure relief valve 5 is fixedly installed on the surface of the sealing cover 4, an anode tube 31 is fixedly installed at the bottom of the sealing valve 3, a nozzle 32 is fixedly installed at one end of the anode tube 31, a cathode tube 33 is fixedly installed at the other end of the nozzle 32, an insulation tube 34 is fixedly installed on the outside of the cathode tube 33, and the insulation tube 31 is fixedly installed on the outside of the insulation tube 31. 4 is provided with a heat insulation mechanism, which includes an inner ring 36, the outer side of the inner ring 36 is fixedly installed on the inner side of the heat insulation tube 34, the inner side of the inner ring 36 is fixedly installed with a heat storage tube 37, the inner side of the inner ring 36 is provided with a heat insulation coating layer 361, the inner side of the heat insulation coating layer 361 is fixedly installed with an inner pad 362, and the inner side of the inner pad 362 is provided with a heat hole 363. The anode tube 31 and the cathode tube 33 are energized, and the plasma arc presents a nonlinear negative resistance characteristic, which is convenient for steam to release electricity. After the arc is started, there is a contradiction between gas ionization and deionization in the arc zone. When the deionization factor dominates its physical process, the arc may suddenly break, -di / dlt is extremely large, and the load is kept at a stable working point or stable operation to ensure that the arc burns stably and does not break the arc. The sealing valve 3 cooperates with the pressure relief valve 5 to ensure that the internal pressure is normal. During the arc processing, the heat generated is used. The thermal insulation coating layer 361 has the functions of heat insulation, waterproofing and corrosion resistance to insulate the inner wall of the heater to ensure the stability of the internal temperature. Then, the non-heat-conducting function of the inner pad 362 further insulates the inside of the heater, making it convenient for the device to provide heating and keep warm.

[0035] Example 2

[0036] On the basis of Example 1, this embodiment provides a technical solution: preferably, a heat protection plate 371 is fixedly installed inside the heat storage tube 37, a steam groove 372 is opened on the inner side of the heat storage tube 37, a mounting plate 373 is fixedly installed inside the steam groove 372, and adsorption cotton 374 is fixedly installed on the surface of the mounting plate 373. When the anode tube 31 and the cathode tube 33 are energized, steam is easily generated, and the adsorption property of the adsorption cotton 374 is used to absorb water vapor, thereby retaining the heat inside the water vapor, making it convenient for the device to store heat and achieve the function of heat preservation.

[0037] Example 3

[0038] On the basis of Example 1, this embodiment provides a technical solution: preferably, a disassembly hole 343 is opened on one side of the insulation tube 34, and a disassembly mechanism is arranged inside the disassembly hole 343, and the disassembly mechanism includes a mounting bolt 351, and a connecting ring cover 35 is movably installed on the outer side of the mounting bolt 351, and the side of the connecting ring cover 35 is arranged on one side of the cathode tube 33, and clamping blocks 341 are fixedly installed on both sides of the insulation tube 34, and the two ends of the clamping block 341 are threadedly connected with limiting bolts 342. By manually disassembling the limiting bolts 342, the internal threads of the clamping block 341 are disassembled, and then the mounting bolts 351 are rotated to disassemble and detach the connecting ring cover 35 from one side of the cathode tube 33, thereby facilitating the convenient disassembly and installation of the insulation tube 34, which is conducive to the convenient disassembly and installation of the insulation mechanism and increases the convenience of the device.

[0039] The working principle of the high-pressure and high-enthalpy arc heater is described in detail below.

[0040] like Figure 1-5As shown, the anode tube 31 and the cathode tube 33 are energized, and the plasma arc presents a nonlinear negative resistance characteristic, which is convenient for steam to release electricity. After the arc is started, there is a contradiction between gas ionization and deionization in the arc zone. When the deionization factor dominates its physical process, the arc may be suddenly disconnected, and -di / dlt is extremely large. The load is kept at a stable working point or stable operation to ensure that the arc burns stably and the arc is not broken. The sealing valve 3 cooperates with the pressure relief valve 5 to ensure that the internal pressure is normal. During the arc processing, the heat generated is used. The heat insulation coating layer 361 has the functions of heat insulation, waterproofing and corrosion resistance to achieve the function of heat insulation of the inner wall of the heater to ensure the stability of the internal temperature, and then the inner pad 36 is used. 2. The function of non-conducting heat is further provided to insulate the inside of the heater, so that the device can be conveniently heated and kept warm. When the anode tube 31 and the cathode tube 33 are energized, steam is easily generated, and the adsorption of the adsorption cotton 374 is used to absorb water vapor, thereby retaining the heat inside the water vapor, so that the device can store heat and achieve the function of heat preservation. The limiting bolt 342 is manually disassembled, so that the internal thread of the clamping block 341 is disassembled, and then the thread is rotated with the installation bolt 351, and the connecting ring cover 35 is disassembled and detached from one side of the cathode tube 33, so that the heat insulation tube 34 is conveniently disassembled and installed, which is conducive to the convenient disassembly and installation of the heat insulation mechanism and increases the convenience of the device.

[0041] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A high-pressure, high-enthalpy arc heater, comprising a heater body (1), characterized in that: Support plates (2) are fixedly mounted at both ends of the bottom of the heater body (1), a sealing valve (3) is fixedly mounted on the top of the heater body (1), a sealing cover (4) is fixedly mounted on one end of the heater body (1), and a pressure relief valve (5) is fixedly mounted on the surface of the sealing cover (4); An anode tube (31) is fixedly mounted on the bottom of the sealing valve (3), a nozzle (32) is fixedly mounted on one end of the anode tube (31), a cathode tube (33) is fixedly mounted on the other end of the nozzle (32), a heat insulation tube (34) is fixedly mounted on the outside of the cathode tube (33), and a heat insulation mechanism is provided on the inside of the heat insulation tube (34); A disassembly hole (343) is provided on one side of the heat insulation tube (34), and a disassembly mechanism is provided inside the disassembly hole (343).

2. A high-pressure and high-enthalpy arc heater according to claim 1, characterized in that: The heat insulation mechanism comprises an inner ring (36), the outer side of the inner ring (36) is fixedly mounted on the inner side of the heat insulation tube (34), and the interior of the inner ring (36) is fixedly mounted with a heat storage tube (37).

3. A high-pressure and high-enthalpy arc heater according to claim 2, characterized in that: A heat-insulating paint layer (361) is provided on the inner side of the inner ring (36), an inner pad (362) is fixedly installed on the inner side of the heat-insulating paint layer (361), and a heat hole (363) is opened inside the inner pad (362).

4. A high-pressure and high-enthalpy arc heater according to claim 2, characterized in that: A heat protection plate (371) is fixedly installed inside the heat storage tube (37), and a steam groove (372) is opened on the inner side of the heat storage tube (37).

5. A high-pressure and high-enthalpy arc heater according to claim 4, characterized in that: A mounting plate (373) is fixedly mounted inside the steam tank (372), and adsorption cotton (374) is fixedly mounted on the surface of the mounting plate (373).

6. A high-pressure and high-enthalpy arc heater according to claim 1, characterized in that: The disassembly mechanism comprises a mounting bolt (351), a connecting ring cover (35) is movably mounted on the outer side of the mounting bolt (351), and a side surface of the connecting ring cover (35) is arranged on one side of the cathode tube (33).

7. A high-pressure and high-enthalpy arc heater according to claim 1, characterized in that: Clamping blocks (341) are fixedly mounted on both sides of the heat insulation tube (34), and both ends of the clamping blocks (341) are threadedly connected with limiting bolts (342).

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