CN117419938A - Dummy load testing device of liquid nitrogen circulating unit - Google Patents
Dummy load testing device of liquid nitrogen circulating unit Download PDFInfo
- Publication number
- CN117419938A CN117419938A CN202311143080.1A CN202311143080A CN117419938A CN 117419938 A CN117419938 A CN 117419938A CN 202311143080 A CN202311143080 A CN 202311143080A CN 117419938 A CN117419938 A CN 117419938A
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- China
- Prior art keywords
- heat exchange
- liquid nitrogen
- exchange coil
- heat
- heating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 239000007788 liquid Substances 0.000 title claims abstract description 44
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 36
- 238000012360 testing method Methods 0.000 title claims abstract description 32
- 238000010438 heat treatment Methods 0.000 claims abstract description 63
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 21
- 229910052710 silicon Inorganic materials 0.000 claims description 21
- 239000010703 silicon Substances 0.000 claims description 21
- 230000009123 feedback regulation Effects 0.000 claims description 4
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 3
- 229920002530 polyetherether ketone Polymers 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- 238000012546 transfer Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 1
- 238000004172 nitrogen cycle Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 4
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- 239000000110 cooling liquid Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/002—Thermal testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/008—Subject matter not provided for in other groups of this subclass by doing functionality tests
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention discloses a false load testing device of a liquid nitrogen circulating unit, which comprises a device shell, a heating body and a heat exchange coil, wherein a vacuum cavity is arranged in the device shell, the heating body and the heat exchange coil are suspended in the vacuum cavity, the heating body is tightly attached to the heat exchange coil, the input end and the output end of the heat exchange coil extend out of the device shell, and a heat conduction medium enters the heat exchange coil through the input end of the heat exchange coil and is discharged out of the device shell after heat exchange is carried out between the heat conduction medium and the heating body. According to the invention, the heat conduction medium in the heat exchange coil is heated by the heating plate, so that the heat dissipation of the user equipment can be simulated, the device shell is internally provided with the vacuum cavity, the heat convection of the gas in the cavity, the heat exchange coil and the heating body is reduced, the heat loss is reduced, the damage to the user equipment caused by the unit problem can be avoided, and the test requirement of the liquid nitrogen circulating unit is met.
Description
Technical Field
The invention relates to the technical field of low-temperature refrigeration, in particular to a dummy load testing device of a liquid nitrogen circulating unit.
Background
In order to carry out function debugging and test on a designed liquid nitrogen circulating unit, the unit needs to be connected into a load, the unit which is not tested and tested can not be directly connected with a user side for the purpose of protecting user side equipment, and in actual situations, the liquid nitrogen circulating unit can not be connected into a system due to the reasons of distance, transportation cost and the like. At this time, a device capable of replacing the user terminal equipment to perform the test is needed, and the device is also required to have the functions of controllable heat load loading, import and export temperature monitoring and the like.
The prior patent publication CN108680785a discloses a dummy load testing device, which comprises: the liquid cooling device comprises a box body, a heating body and a drainage component, wherein a liquid inlet is formed in the bottom area of the box body, a liquid outlet is formed in the top area of the box body, the heating body is located inside the box body and used for simulating server load in a working state under a liquid cooling environment, and the drainage component is located inside the box body and used for guiding cooling liquid to flow from the liquid inlet to the liquid outlet in an S-shaped channel under the liquid cooling environment. The flow of the cooling liquid in the box body is guided by the drainage component, so that the problem that the temperature of a local area of the cooling liquid is too high due to the fact that the cooling liquid vertically flows along the surface of the heating body to absorb heat can be effectively prevented, and overheating denaturation of the cooling liquid is avoided.
However, the phenomenon that the gas in the cavity, the heat exchange coil and the heating element perform convection heat exchange still exists, and the test requirement of the liquid nitrogen circulating unit cannot be met.
Disclosure of Invention
The invention aims to solve the technical problem of providing a dummy load device suitable for testing a liquid nitrogen circulating unit.
The invention solves the technical problems by the following technical means: the utility model provides a liquid nitrogen circulation unit dummy load testing arrangement, includes device casing, heat-generating body, heat exchange coil, be equipped with the vacuum cavity in the device casing, heat-generating body, heat exchange coil all suspend in midair and locate in the vacuum cavity, heat-generating body and heat exchange coil closely laminate, heat exchange coil's input and output all extend outside the device casing, and heat conduction medium gets into heat exchange coil and carries out the heat exchange back with the heat-generating body through heat exchange coil's input and discharges the device casing.
The heat dissipation of user terminal equipment can be simulated through the heat conduction medium in the heating plate heating heat exchange coil, set up into a vacuum cavity in the device casing, reduce the gaseous and heat exchange coil, the heat-generating body emergence convection heat transfer of cavity inside, reduce the heat loss, can avoid causing the damage to user terminal equipment because of the unit problem, satisfied liquid nitrogen circulation unit test demand.
As the preferable technical scheme, the device further comprises a silicon controlled rectifier, wherein the silicon controlled rectifier is arranged outside the device shell, and the silicon controlled rectifier is electrically connected with the heating body and used for adjusting the input power of the heating disc.
As the preferable technical scheme, the input end and the output end of the heat exchange coil are respectively connected with an input pipe and an output pipe, the input pipe, the output pipe and the outer side of the heating plate are respectively provided with a temperature sensor, the temperature sensors are electrically connected with the silicon controlled rectifiers, and the input power of the heating plate is feedback regulation and control by the silicon controlled rectifiers according to the temperature sensor temperature at the outer sides of the input pipe and the output pipe.
As the preferable technical scheme, the heating body is connected in the device shell in a suspending way through a connecting rod, and the connecting rod is made of polyether-ether-ketone.
As a preferable technical scheme, the heating body comprises a heating plate, and the heating plate is connected and fastened with the flange plate through at least two connecting rods.
As the preferable technical scheme, the device shell comprises a flange plate and a lower shell, wherein the flange plate is fixedly connected to the top of the lower shell, the flange plate is enclosed to form the vacuum cavity, and the top of the flange plate is also provided with a vacuumizing interface.
As the preferable technical scheme, the heating body is provided with a groove matched with the heat exchange coil.
As the preferable technical scheme, the input pipe and the output pipe are both of double-layer tubular structures.
As an optimal technical scheme, a vacuum electrode and a temperature sensor interface are arranged at the top of the flange plate.
As an optimized technical scheme, the lower shell is provided with a butt flange matched with the flange, and the butt flange is connected and fastened with the flange through bolts.
The invention has the advantages that:
(1) According to the invention, the heat dissipation of the user terminal equipment can be simulated by heating the heat conduction medium in the heat exchange coil through the heating plate, the damage to the user terminal equipment caused by the unit problem can be avoided, the test requirement of the liquid nitrogen circulating unit is met, the device shell is internally provided with the vacuum cavity, the convection heat exchange of the gas in the cavity, the heat exchange coil and the heating body is reduced, and the heat loss is reduced.
(2) According to the invention, through the arrangement of the silicon controlled rectifier and the temperature sensor, the input power of the heating disc is subjected to feedback regulation control by the silicon controlled rectifier according to the temperatures of the temperature sensors outside the input pipe and the output pipe, so that the heat load of the liquid nitrogen circulating unit can be controlled, the load is adjustable, the heat load processing capacity of the liquid nitrogen circulating unit can be obtained through the heating power, the unit performance is evaluated, the inlet and outlet temperature is monitored, and meanwhile, the temperature of the heating disc is measured, so that the temperature of the heating disc is ensured to be in a normal working range.
(3) According to the invention, the power of the heating plate is adjustable, so that the heating plate can be used for testing requirements of liquid nitrogen circulating units with different sizes and models, and the applicability of the device is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a dummy load testing device of a liquid nitrogen circulating unit provided by an embodiment of the invention;
FIG. 2 is a schematic cross-sectional structure diagram of a dummy load testing device of a liquid nitrogen circulating unit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a heating plate structure of a dummy load testing device of a liquid nitrogen circulating unit according to an embodiment of the present invention;
reference numerals: 1. an input tube; 2. an output pipe; 3. a vacuum electrode and temperature sensor interface; 4. a vacuumizing interface; 5. a flange plate; 6. a connecting rod; 7. device shell, 8, heating plate, 9, heat exchange coil.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described in the following in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 and 2, a false load testing device of a liquid nitrogen circulating unit comprises a device shell 7, a heating body and a heat exchange coil 9, wherein a vacuum cavity is arranged in the device shell 7, the heating body and the heat exchange coil 9 are suspended in the vacuum cavity, the heating body is tightly attached to the heat exchange coil 9, the input end and the output end of the heat exchange coil 9 extend out of the device shell 7, and a heat conduction medium enters the heat exchange coil 9 through the input end of the heat exchange coil 9 and is discharged out of the device shell 7 after being subjected to heat exchange with the heating body, wherein the input power of the heating body is adjustable;
it should be noted that, in this embodiment, the heat-conducting medium is exemplified by liquid nitrogen, but not limited to this, but may be other medium, and the heat dissipation of the user equipment can be simulated by heating the heat-conducting medium in the heat exchange coil 9 by the heating disc 8, so that damage to the user equipment caused by the unit problem can be avoided, the test requirement of the liquid nitrogen circulating unit is met, the test cost is greatly reduced, the test time is shortened, the arrangement of the vacuum cavity reduces the convection heat exchange of the gas in the cavity, the heat exchange coil and the heating element, and the heat loss is reduced.
Referring to fig. 2 and 3, the liquid nitrogen circulation unit heat load control device further comprises a silicon controlled rectifier, the silicon controlled rectifier is a controller, the heat exchange amount of the heat exchanger can be adjusted through the silicon controlled rectifier, multiple different load operations can be achieved, meanwhile, the cost of the silicon controlled rectifier is low, the use cost of the whole set of equipment is reduced, the silicon controlled rectifier is arranged outside the device shell 7 and is electrically connected with a heating body and used for adjusting the input power of the heating disc 8, the input power of the heating disc 8 is controlled through the silicon controlled rectifier, the heat load of the liquid nitrogen circulation unit is controlled, the load is adjustable, the heat load processing capacity of the liquid nitrogen circulation unit can be obtained through the heating power, and the unit performance is evaluated.
The heating body comprises a heating disc 8, an input end and an output end of a heat exchange coil 9 are respectively connected with an input pipe 1 and an output pipe 2, the input pipe 1 and the output pipe 2 extend out of a device shell 7, temperature sensors are arranged on the outer sides of the input pipe 1 and the output pipe 2 and the heating disc 8, the stability of system operation can be ensured by monitoring the temperature of the input pipe 1 and the output pipe 2, namely the temperature of a liquid nitrogen inlet and outlet and the temperature of the heating disc 8, the temperature sensors are electrically connected with a silicon controlled rectifier, the input power of the heating disc is controlled by the silicon controlled rectifier in a feedback regulation mode according to the temperature of the temperature sensors on the outer sides of the input pipe and the output pipe, the liquid nitrogen heat exchange quantity can be changed by controlling the input power regulation of the electric heating wires in the heating disc 8, the real user end use condition is simulated, and the test is completed.
Referring to fig. 2, the device housing comprises a flange 5 and a lower housing, wherein the flange 5 is fixedly connected to the top of the lower housing and encloses to form a vacuum cavity, a butt flange matched with the flange 5 is arranged on the lower housing, the butt flange is fixedly connected with the flange 5 through bolts, a vacuumizing interface 4 is further arranged at the top of the flange 5, and the vacuumizing interface 4 is reserved to facilitate vacuum extraction at any time and maintain proper vacuum degree in the cavity; the top of the flange plate 5 is also provided with a vacuum electrode and temperature sensor interface 3, and a connecting wire of the temperature sensor extends out of the vacuum electrode and temperature sensor interface 3 and is electrically connected with the silicon controlled rectifier.
Referring to fig. 2, a heating plate 8 is suspended and connected in a device housing through a connecting rod 6, the connecting rod is made of polyether-ether-ketone (peek material screw), the heating plate 8 is connected and fastened with a flange plate 5 through at least two connecting rods 6, in this embodiment, in order to ensure stability of the heating plate 8, four connecting rods 6 are taken as an example, but not limited thereto, the heating plate 8 is provided with grooves adapted to a heat exchange coil 9, heat conduction effects are improved, and an input pipe 1 and an output pipe 2 are of double-layer tubular heat insulation structures, so that heat loss in a liquid nitrogen transmission process is reduced.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a liquid nitrogen circulation unit dummy load testing arrangement, its characterized in that, includes device casing, heat-generating body, heat exchange coil, be equipped with the vacuum cavity in the device casing, heat-generating body, heat exchange coil all suspend in midair and locate in the vacuum cavity, heat-generating body and heat exchange coil closely laminate, heat exchange coil's input and output all extend to outside the device casing, and heat transfer medium gets into heat exchange coil and carries out the heat exchange with the heat-generating body back and discharges the device casing through heat exchange coil's input.
2. The device for testing the false load of the liquid nitrogen circulating unit according to claim 1, further comprising a silicon controlled rectifier, wherein the silicon controlled rectifier is arranged outside the device shell, and the silicon controlled rectifier is electrically connected with the heating body and used for adjusting the input power of the heating disc.
3. The device for testing the false load of the liquid nitrogen circulating unit according to claim 2, wherein the input end and the output end of the heat exchange coil are respectively connected with an input pipe and an output pipe, temperature sensors are arranged on the outer sides of the input pipe, the output pipe and the heating plate, the temperature sensors are electrically connected with the silicon controlled rectifier, and the input power of the heating plate is subjected to feedback regulation control by the silicon controlled rectifier according to the temperature of the temperature sensors on the outer sides of the input pipe and the output pipe.
4. The device for testing the false load of the liquid nitrogen circulating unit according to claim 1, wherein the heating body is connected in the device shell in a hanging manner through a connecting rod, and the connecting rod is made of polyether-ether-ketone.
5. The device for testing the false load of the liquid nitrogen circulating unit according to claim 4, wherein the heating body comprises a heating disc, and the heating disc is fixedly connected with the flange plate through at least two connecting rods.
6. The device for testing the false load of the liquid nitrogen circulating unit according to claim 1, wherein the device shell comprises a flange plate and a lower shell, the flange plate is fixedly connected to the top of the lower shell and surrounds the lower shell to form the vacuum cavity, and a vacuumizing interface is further arranged on the top of the flange plate.
7. The false load testing device of the liquid nitrogen circulating unit according to claim 1, wherein grooves matched with the heat exchange coils are formed in the heating body.
8. A liquid nitrogen cycle set dummy load test apparatus according to claim 3, wherein said inlet and outlet pipes are of double-layered thermal insulation pipe construction.
9. The device for testing the false load of the liquid nitrogen circulating unit according to claim 6, wherein the top of the flange plate is provided with a vacuum electrode and a temperature sensor interface.
10. The device for testing the false load of the liquid nitrogen circulating unit according to claim 6, wherein the lower shell is provided with a butt flange matched with the flange, and the butt flange is connected and fastened with the flange through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311143080.1A CN117419938A (en) | 2023-09-05 | 2023-09-05 | Dummy load testing device of liquid nitrogen circulating unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311143080.1A CN117419938A (en) | 2023-09-05 | 2023-09-05 | Dummy load testing device of liquid nitrogen circulating unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117419938A true CN117419938A (en) | 2024-01-19 |
Family
ID=89521759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311143080.1A Pending CN117419938A (en) | 2023-09-05 | 2023-09-05 | Dummy load testing device of liquid nitrogen circulating unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117419938A (en) |
-
2023
- 2023-09-05 CN CN202311143080.1A patent/CN117419938A/en active Pending
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