Electric heating simulation load and installation structure

Abstract

The invention provides an electric heating simulation load, and particularly relates to the technical field of refrigeration equipment, the electric heating simulation load comprises electric heating units, a core flange and a heat radiation screen, the multiple electric heating units are fixed into a whole through a fixing plate in the axial direction, one side of each electric heating unit is connected with an electric heating lead, and the other side of each electric heating unit is connected with a heat radiation screen. The core body flange is connected with one side, close to the electric heating lead, of the electric heating unit through a low-heat-conduction pull rod, at least one heat radiation screen is arranged between the core body flange and the fixing plate, the heat radiation screen is parallel to the core body flange, an axial hole is formed in the heat radiation screen, and the heat radiation screen is connected with the core body flange through the low-heat-conduction pull rod. According to the electric heating simulation load structure, heat conduction, heat convection and heat radiation are reduced through the low-heat-conduction pull rod and the heat radiation screen, heat leakage can be reduced, and reliable input and signal stability of the electric heating simulation load structure are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of refrigeration equipment, and in particular to an electric heating simulation load and an installation structure. Background Art

[0002] Cooling capacity is the core indicator of a cryogenic refrigerator, which includes two parameters: size and temperature. During the development of a cryogenic refrigeration system, in order to accurately measure the cooling capacity of the refrigerator at a specific temperature, an electric heating simulated load is often used. By reading the power of the electric heating simulated load and the state of the refrigerant before and after passing through the electric heating simulated load, the cooling capacity of the refrigerator at random times can be determined.

[0003] Since one end of the electric heating simulated load is connected to the refrigeration system and the other end is at room temperature, heat leakage may cause cooling loss. In severe cases, condensation and frost may occur, affecting the safe operation of the electric heating simulated load.

[0004] In view of this, the present invention provides an electric heating simulation load and an installation structure which can reduce heat leakage and ensure the normal operation of the electric heating simulation load. Summary of the invention

[0005] In order to solve the problem that heat leakage affects the operation of an electric heating simulated load, the present invention proposes an electric heating simulated load and an installation structure.

[0006] The present invention is achieved through the following technical solutions:

[0007] The present invention proposes that the electric heating simulated load comprises an electric heating unit, a core flange and a heat radiation screen, wherein:

[0008] The plurality of electric heating units are fixed into a whole along the axial direction by a fixing plate, an electric heating lead is connected to one side of the electric heating unit, the core flange is connected to the side of the electric heating unit close to the electric heating lead through a low thermal conductivity pull rod, at least one thermal radiation screen is arranged between the core flange and the fixing plate, the thermal radiation screen is parallel to the core flange, an axial hole is arranged on the thermal radiation screen, and the measuring lead and the low thermal conductivity pull rod pass through the axial hole of the thermal radiation screen.

[0009] Furthermore, it also includes baffles, a plurality of the baffles are parallel to the fixed plate, and the baffles are fixed on the electric heating unit.

[0010] Furthermore, it also includes a wiring terminal, and the wiring terminal is arranged on a side of the core flange away from the electric heating lead.

[0011] Furthermore, a vacuum insulation structure is provided between the wiring terminal and the core flange.

[0012] Furthermore, the device also includes a measuring lead, a plug is provided on the side of the core flange away from the electric heating lead, and the measuring lead is installed on the core flange through the plug.

[0013] Furthermore, the low thermal conductivity pull rod is made of epoxy resin glass fiber, or other non-metallic materials that are resistant to low temperatures and meet strength requirements, or a metal-non-metal combined structure.

[0014] Further, the installation structure of the electric heating simulated load includes a pipeline, a core coupling flange and a vacuum neck tube, wherein:

[0015] The electric heating simulation load is installed in the pipeline, and the pipeline is provided with at least one outlet and at least one inlet. A core combining flange is also provided on the side of the core flange close to the electric heating lead, and the core combining flange is fixedly connected to the core flange. The core combining flange and the wall of the vacuum system are connected through multiple vacuum neck tubes, and the multiple vacuum neck tubes are connected through transition flanges.

[0016] Beneficial effects of the present invention:

[0017] The electric heating simulation load proposed by the present invention reduces heat conduction, heat convection and heat radiation through a low-heat-conductivity pull rod and a heat radiation screen, which can reduce heat leakage and ensure reliable input and signal stability of the electric heating simulation load structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the electric heating simulated load of the present invention;

[0019] Figure 2 This is a structural diagram of the electric heating simulated load after installation of the present invention;

[0020] In the figure: electric heating unit 1, baffle 2, fixing plate 3, electric heating lead 4, heat radiation screen 5, low thermal conductivity pull rod 6, core flange 7, terminal 8, measuring lead 9, pipeline 10, vacuum neck tube 11, transition flange 12, core joint flange 13;

[0021] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments. DETAILED DESCRIPTION

[0022] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention is further described below in conjunction with the accompanying drawings.

[0023] Please refer to Figure 1-Figure 2 The present invention proposes an electric heating simulation load including an electric heating unit 1, a core flange 7 and a heat radiation screen 5, wherein:

[0024] A plurality of electric heating units 1 are fixed into a whole along the axial direction by a fixing plate 3, an electric heating lead 4 is connected to one side of the electric heating unit 1, a core flange 7 is connected to the side of the electric heating unit 1 close to the electric heating lead 4 through a low thermal conductivity pull rod 6, at least one thermal radiation screen 5 is arranged between the core flange 7 and the fixing plate 3, the thermal radiation screen 5 is parallel to the core flange 7, an axial hole is arranged on the thermal radiation screen 5, and a measuring lead 9 and a low thermal conductivity pull rod 6 pass through the axial hole of the thermal radiation screen 5.

[0025] In a specific embodiment, a plurality of electric heating units 1 are provided, one side of the plurality of electric heating units 1 is fixed by a fixing plate 3, an electric heating lead 4 supplies power to the electric heating unit 1, the electric heating unit 1 converts electrical energy into thermal energy, one side of the core flange 7 is the low temperature environment of the refrigeration system, and the other side is the external environment, and the core flange 7 and the fixing plate 3 are connected by a low thermal conductivity pull rod 6 to reduce the heat leakage caused by heat conduction, and the thermal radiation screen 5 can reduce the heat leakage caused by gas convection and thermal radiation in the core of the refrigerator simulated load, and the number of thermal radiation screens 5 can be selected according to the actual space to further reduce heat leakage, and the low thermal conductivity pull rod 6 and the thermal radiation screen 5 can reduce heat conduction, thermal convection and thermal radiation, so as to ensure the reliable input and signal stability of the electric heating simulated load structure.

[0026] Furthermore, it also includes baffles 2, a plurality of baffles 2 are parallel to the fixing plate 3, and the baffles 2 are fixed on the electric heating unit 1.

[0027] In a specific embodiment, the baffle 2 changes the flow path of the fluid, making the path through which the fluid passes longer, and at the same time enhances the heat exchange between the fluid and the electric heating unit 1 .

[0028] Furthermore, it also includes a wiring terminal 8 , which is arranged on a side of the core flange 7 away from the electric heating lead 4 .

[0029] In a specific implementation, the wiring terminal 8 is used to connect a power line, and the wiring terminal 8 is used to supply power to the entire refrigerator simulated load.

[0030] Furthermore, a vacuum insulation structure is provided between the connection terminal 8 and the core flange 7 .

[0031] In a specific embodiment, the vacuum insulation structure is used to avoid short circuits between the connection terminals 8 , the measuring lead wire 9 plugs and the core flange 7 , and to prevent internal and external leakage through the core flange 7 .

[0032] Furthermore, it also includes a measuring lead 9. A plug is provided on the side of the core flange 7 away from the electric heating lead 4. The measuring lead 9 is installed on the core flange 7 through the plug.

[0033] In a specific implementation, the core flange 7 is provided with openings, and the openings are used to install the connection terminals 8 and the measuring lead 9 plugs, and the measuring lead 9 is installed on the core flange 7 through the plugs.

[0034] Furthermore, the low thermal conductivity pull rod 6 is made of epoxy resin glass fiber, or other non-metallic materials that are resistant to low temperatures and meet strength requirements, or a metal-non-metal combined structure.

[0035] In a specific implementation, other low thermal conductivity materials may be selected as the low thermal conductivity pull rod 6 according to actual conditions, or the length of the low thermal conductivity pull rod 6 may be extended to further reduce heat leakage.

[0036] Furthermore, the installation structure of the electric heating simulated load includes a pipeline 10, a core coupling flange 13 and a vacuum neck tube 11, wherein:

[0037] The electric heating simulation load is installed in the pipeline 10, which is provided with at least one outlet and at least one inlet. A core combining flange 13 is also provided on the side of the core flange 7 close to the electric heating lead 4. The core combining flange 13 is fixedly connected to the core flange 7. The core combining flange 13 and the wall of the vacuum system are connected through multiple vacuum neck tubes 11, and the multiple vacuum neck tubes 11 are connected through transition flanges 12.

[0038] In a specific embodiment, the radius of the pipeline 10 is slightly larger than the outer diameter of the baffle 2 and the fixed plate 3, so that the entire electric heating simulation load can be installed in the pipeline 10. The outer surface of the pipeline 10 needs to be coated with multiple layers of reflective insulation material. The pipeline 10 is divided into two parts. The right part is located in the vacuum system wall of the refrigerator and is vacuum-set, and the left part is located in the external environment. An inlet and an outlet are provided on the right pipeline 10 for passing the refrigerant. The inlet and the outlet are provided with temperature, pressure and other sensors. Since the left side is located in the external environment, a vacuum neck tube 11 needs to be further provided to isolate heat leakage. The space between the vacuum neck tube 11 and the pipeline 10 can also be arranged with multiple layers of reflective insulation material. Adjacent vacuum neck tubes 11 are connected by two transition flanges 12, and the core flange 7 and the core combination flange 13 are combined by flange connection, welding connection and the like to form a sealed interface. During operation, the terminal 8 is connected to the power cord, and the measuring lead 9 plug is connected to the matching plug. The fluid flows in from the inlet of the pipeline 10 and flows out from the outlet of the pipeline 10, thereby completing the fluid heating and cooling measurement.

[0039] In one embodiment, the electric heating simulation load is an independent structure, which can be installed not only horizontally but also vertically through the core flange 7 .

[0040] Of course, the present invention may have many other implementations. Based on this implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present invention.

Claims

1. An electric heating simulated load, characterized in that: It includes an electric heating unit, a core flange and a heat radiation screen, wherein: The plurality of electric heating units are fixed into a whole along the axial direction by a fixing plate, an electric heating lead is connected to one side of the electric heating unit, the core flange is connected to the side of the electric heating unit close to the electric heating lead through a low thermal conductivity pull rod, at least one thermal radiation screen is arranged between the core flange and the fixing plate, the thermal radiation screen is parallel to the core flange, an axial hole is arranged on the thermal radiation screen, and the measuring lead and the low thermal conductivity pull rod pass through the axial hole of the thermal radiation screen.

2. The electric heating simulated load according to claim 1, characterized in that: It also includes baffles, a plurality of which are parallel to the fixed plate, and the baffles are fixed on the electric heating unit.

3. The electric heating simulated load according to claim 1, characterized in that: It also includes a wiring terminal, which is arranged on a side of the core flange away from the electric heating lead.

4. The electric heating simulated load according to claim 3, characterized in that: A vacuum insulation structure is provided between the connection terminal and the core flange.

5. The electric heating simulated load according to claim 1, characterized in that: The device also includes a measuring lead wire. A plug is provided on the side of the core flange away from the electric heating lead wire. The measuring lead wire is installed on the core flange through the plug.

6. The electric heating simulated load according to claim 1, characterized in that: The low thermal conductivity pull rod is made of epoxy resin glass fiber, or other non-metallic materials that are resistant to low temperatures and meet strength requirements, or a metal-non-metal combined structure.

7. An installation structure for an electric heating simulated load, applied to the electric heating simulated load as claimed in any one of claims 1 to 6, characterized in that: The installation structure includes a pipeline, a core body coupling flange and a vacuum neck tube, wherein: The electric heating simulation load is installed in the pipeline, and the pipeline is provided with at least one outlet and at least one inlet. A core combining flange is also provided on the side of the core flange close to the electric heating lead, and the core combining flange is fixedly connected to the core flange. The core combining flange and the wall of the vacuum system are connected through multiple vacuum neck tubes, and the multiple vacuum neck tubes are connected through transition flanges.

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