CN202188991U - Screen-display PLC (Programmable Logic Controller) control low-temperature instrument - Google Patents
Screen-display PLC (Programmable Logic Controller) control low-temperature instrument Download PDFInfo
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- CN202188991U CN202188991U CN2011202307779U CN201120230777U CN202188991U CN 202188991 U CN202188991 U CN 202188991U CN 2011202307779 U CN2011202307779 U CN 2011202307779U CN 201120230777 U CN201120230777 U CN 201120230777U CN 202188991 U CN202188991 U CN 202188991U
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- screen
- control low
- low temperature
- filtering
- drying
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Abstract
The utility model relates to a screen-display PLC (Programmable Logic Controller) control low-temperature instrument which is mainly used for supplying metal and non-metal impact specimens. The screen-display PLC (Programmable Logic Controller) control low-temperature instrument comprises a rack, a refrigerating system, a machine enclosure, a control system and a stirring system, wherein the refrigerating system is arranged on the rack; the control system is arranged on the machine enclosure; the stirring system is arranged at the bottom of the cooling tank; a heat preservation cover with a handle is arranged at the upper part of the cooling tank; a cooling medium is placed inside the cooling tank; a thermal insulating layer is arranged outside the cooling tank; the instrument is characterized in that the refrigerating system is a cascade refrigerating system formed by a compressor unit; a PLC and a touch screen are adopted in the control system; an operation panel is arranged on the touch screen; and the stirring system is a rotor driven by a motor. The screen-display PLC control low-temperature instrument provided by the utility model has the beneficial effects: the instrument is controlled by adopting the touch screen and the PLC so that the instrument operation is more stable and reliable in operation, the operation is more convenient and visualized, and the appearance is more high-quality and attractive; and the refrigerating system adopts the cascade refrigeration, has better refrigeration effect and operates stably.
Description
Technical field
The utility model relates to a kind of screen and shows PLC control low temperature appearance, and being mainly used in provides the low temperature of metal, nonmetal impact specimen appearance.
Background technology
The metal Charpy-type test is used to measure the most widely used a kind of traditional mechanics performance test of metal material toughness, also is one of important means of evaluation metal material toughness under shock load.The standard of the metal Charpy-type test of China's execution at present is: GB/T229-2007 " the metal material summer is than pendulum impact test method ".Tradition obtains the method for low temperature with dry ice or liquid nitrogen, and cost height and precision are low.The low temperature appearance mechanical raking and the charactron temperature control instrument of present compressor cooling, the not attractive in appearance and inconvenient operation of outward appearance.
Summary of the invention
In order to remedy the deficiency of prior art, the utility model provides the impulse test low temperature appearance of a kind of stable, energy-conservation, high precision, easy to operate and top grade attractive in appearance.
The utility model is realized through following technical scheme:
A kind of screen shows PLC control low temperature appearance, comprises frame and is positioned at the refrigeration system on the frame; Casing be positioned at the control system on the casing; The stirring system of cooling bath bottom; Said cooling bath top is provided with handled insulation cover; Heat eliminating medium is laid in inside; The outside is provided with heat-insulation layer, it is characterized in that: said refrigeration system adopts compressor train to form the cascade refrigeration system, and control system adopts PLC and touch-screen; Ribbon gymnastics is made panel on the said touch-screen, and stirring system is the rotor of driven by motor.
The utility model screen shows PLC control low temperature appearance, and better in order to make cooling effect, refrigeration system adopts two compressor cascade refrigerations; The cold of i.e. # compressor cooling generation is supplied with two # compressors, behind two # compressor coolings, passes to evaporator, adopts PLC and touch-screen for the ease of the control temperature control system; Stirring system adopts the rotor of driven by motor, in order to obtain to adopt stepless change than different rotating speed.
The refrigeration system of the utility model is made up of a # compressor, two # compressors, condenser, reservoir, a # device for drying and filtering, two # devices for drying and filtering, oil separator, heat interchanger, a # restriction device, two # restriction devices and evaporator; Wherein a # compressor links to each other with a # device for drying and filtering through condenser, and a # device for drying and filtering links to each other with heat interchanger through restriction device; Two # compressors link to each other with heat interchanger through oil separator, and heat interchanger links to each other with two # restriction devices through two # devices for drying and filtering, and two # restriction devices link to each other with two # compressors through evaporator.Its course of work is a # compressor is sucked low-temp low-pressure by low-pressure side a gaseous refrigerant; Discharge the gaseous refrigerant of HTHP by the high-pressure side through overcompression; Get into condenser and be condensed into high normal pressure and temperature liquid through heat radiation; Behind a # device for drying and filtering dry filter, get into the cold-producing medium entering heat interchanger absorption heat refrigeration that a # restriction device becomes low-pressure low-temperature again, return a # compressor at last; Two # compressor starts after five minutes; Two # compressors are sucked the gaseous refrigerant of low-temp low-pressure by low-pressure side; Discharge the gaseous refrigerant of HTHP by the high-pressure side through the overcurrent compression; Behind oil separator, get into heat exchanger and absorb the liquid that the cold that is produced by a # compressor becomes high pressure low temperature; Through getting into the cold-producing medium that two # restriction devices become low-pressure low-temperature behind the device for drying and filtering dry filter, return two # compressor reciprocation cycle behind the heat of the evaporator of flowing through absorption heat eliminating medium, thereby reach the purpose that reduces coolant temperature again.
The utility model screen shows PLC control low temperature appearance, for ease of laying control system, on the sidewall of casing, is provided with door closure, in the door closure of casing, lays the electric part of operating system, and electric part is linked to each other with touch-screen through the Communication Control line.
Evaporator in the vaporising device is cylindrical, and evaporator designs is cylindrical, helps heat eliminating medium and stirs; No temperature deviation dead angle; Two # compressors connect expansion gear, and its effect is when shutting down, to guarantee that there is lower equalized pressure in system, thereby reduce the startup load of compressor; Releasing pressure automatically is avoided danger that causes because of discharge pressure is too high and the harm that compressor is caused to low-pressure side when discharge pressure surpasses 2.35MPa in addition, guarantees the normal operation of refrigeration system, moves this equipment for ease, and said casing has castor.
The utility model screen shows the beneficial effect of PLC control low temperature appearance: the utility model adopts touch-screen, PLC control, makes equipment operation more reliable and more stable, and more convenient operation is directly perceived, and outward appearance is more high-grade attractive in appearance; Refrigeration system adopts cascade refrigeration, and refrigeration is relatively good, and stable.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described:
Fig. 1 is the front view of the utility model;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is the compressor train synoptic diagram among Fig. 1;
Fig. 4 is the vertical view of Fig. 3;
Among the figure, 1, handle, 2, insulation cover, 3, heat eliminating medium, 4, evaporator, 5, cooling bath, 6, heat-insulation layer, 7, stirring rotator; 8, stirring motor, 9 compressor train, 10, castor, 11, touch-screen, 12, guidance panel; 13, Communication Control line, 14, loam cake, 15, electric part, 16, shell, 17, door closure; 18 frames, 19, condenser, 20, one # device for drying and filtering 21, a # compressor, 22 2 # compressors, 23, heat interchanger, 24, oil separator; 25, two # devices for drying and filtering, 26, two # restriction devices, 27, one # restriction device, 28, reservoir.
Embodiment
Accompanying drawing is a kind of specific embodiment of the utility model.This embodiment comprises frame 18 and is positioned at the refrigeration system on the frame 18; Casing 16 be positioned at the control system on the casing 16; The stirring system of cooling bath 5 bottoms; Said cooling bath 5 tops are provided with the insulation cover 2 of band handle 1; Heat eliminating medium 3 is laid in inside; The outside is provided with heat-insulation layer 6; It is characterized in that: said refrigeration system adopts two compressor groups 9 to form the cascade refrigeration system, and control system adopts PLC and touch-screen 11, and ribbon gymnastics is made panel 12 on the said touch-screen 11; Stirring system is the rotor 7 that motor 8 drives; Said refrigeration system is made up of a # compressor 21, two # compressors 22, condenser 19, a # device for drying and filtering 20, two # devices for drying and filtering 25, oil separator 24, heat interchanger 23, a # restriction device 27, two # restriction devices 26 and evaporator 4, and wherein a # compressor 21 links to each other with device for drying and filtering 20 through condenser 19, and the restriction device 27 that passes through of device for drying and filtering 20 links to each other with heat interchanger 23; Two # compressors 22 link to each other with heat interchanger 23 through oil separator 24; Get into evaporator 4 through device for drying and filtering 25, restriction device 26 then, be back to two # compressors 22 then, the sidewall of said casing 16 is provided with door closure 17; In the door closure of casing 16, lay the electric part 15 of operating system; Electric part 15 links to each other with touch-screen 11 through Communication Control line 13, and said evaporator 4 is located at the inside of cooling bath 5, and the evaporator 4 in the said vaporising device is cylindrical; Said two # compressors 22 also link to each other with the reservoir 28 of band expansion valve, and said casing 16 has castor 10.
This instrument is the principle refrigeration that is become the gas absorption heat by liquid, adopts the superposition type compressor cooling, and promptly cold-producing medium resupplies two # compressors after through a # compressor cooling and further freezes, and the evaporator of flowing through again makes heat eliminating medium obtain lower cryogenic temperature.
The utility model screen shows PLC control low temperature appearance, and energized turns on the power switch; PLC and touch-screen 11 are started working, and can set temperature required this moment, open the switch of a # compressor; One # compressor operating; " delay time " picks up counting simultaneously, and the work of two # compressor starts begins cooling after two compressors are all worked after arriving delay time.Open the stirring switch, 24V direct current generator 8 is started working, and drives the magnet rotation; Magnet drives 7 rotations of groove internal rotor, and homogeneous media in the agitator bath is regulated rotating speed knob to suitable stirring rate; Open alarm switch; Reduce to temperature required and constant temperature begins output after the set temperature retention time when temperature, remind the freezing end of operating personnel's sample, can begin impulse test.
The utility model is not limited to and is used for impulse test, and also available other samples is freezing.The cooling constant temperature that also can be used for the reagent reacting of chemistry, biology.
Claims (6)
1. a screen shows PLC control low temperature appearance, comprises frame and is positioned at the refrigeration system on the frame; Casing (16) be positioned at the control system on the casing (16); The stirring system of cooling bath (5) bottom; Said cooling bath (5) top is provided with the insulation cover (2) of band handle (1); Heat eliminating medium (3) is laid in inside; The outside is provided with heat-insulation layer (6), it is characterized in that: said refrigeration system adopts compressor train (9) to form the cascade refrigeration system, and control system adopts PLC and touch-screen (11); Said touch-screen (11) is gone up ribbon gymnastics and is made panel (12), and stirring system is the rotor (7) that motor (8) drives.
2. screen according to claim 1 shows PLC control low temperature appearance; It is characterized in that: said refrigeration system is made up of a # compressor (21), two # compressors (22), condenser (19), a # device for drying and filtering (20), two # devices for drying and filtering (25), oil separator (24), heat interchanger (23), a # restriction device (27), two # restriction devices (26) and evaporator (4); Wherein a # compressor (21) links to each other with device for drying and filtering (20) through condenser (19), and device for drying and filtering (20) links to each other with heat interchanger (23) through restriction device (27); Two # compressors (22) link to each other with heat interchanger (23) through oil separator (24); Heat interchanger (23) links to each other with restriction device (26) through two # devices for drying and filtering (25); Restriction device (26) links to each other with two # compressors (22) through evaporator (4), and said evaporator (4) is located at the inside of cooling bath (5).
3. screen according to claim 1 shows PLC control low temperature appearance; It is characterized in that: the sidewall of said casing (16) is provided with door closure (17); In the door closure of casing (16), lay the electric part (15) of operating system, electric part (15) links to each other with touch-screen (11) through Communication Control line (13).
4. screen according to claim 1 shows PLC control low temperature appearance, and it is characterized in that: said evaporator (4) is for cylindrical.
5. screen according to claim 1 shows PLC control low temperature appearance, it is characterized in that: said two # compressors (22) also link to each other with the reservoir (28) of band expansion valve.
6. screen according to claim 1 shows PLC control low temperature appearance, and it is characterized in that: said casing (16) has castor (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202307779U CN202188991U (en) | 2011-07-01 | 2011-07-01 | Screen-display PLC (Programmable Logic Controller) control low-temperature instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202307779U CN202188991U (en) | 2011-07-01 | 2011-07-01 | Screen-display PLC (Programmable Logic Controller) control low-temperature instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202188991U true CN202188991U (en) | 2012-04-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202307779U Expired - Fee Related CN202188991U (en) | 2011-07-01 | 2011-07-01 | Screen-display PLC (Programmable Logic Controller) control low-temperature instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202188991U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111398040A (en) * | 2020-03-20 | 2020-07-10 | 上海交通大学 | Oblique reverse thrust cascade static test device for aircraft engine |
| CN113588530A (en) * | 2021-07-22 | 2021-11-02 | 天津航天瑞莱科技有限公司 | Earth surface environment comprehensive test platform with rapid temperature rise and fall capability |
-
2011
- 2011-07-01 CN CN2011202307779U patent/CN202188991U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111398040A (en) * | 2020-03-20 | 2020-07-10 | 上海交通大学 | Oblique reverse thrust cascade static test device for aircraft engine |
| CN113588530A (en) * | 2021-07-22 | 2021-11-02 | 天津航天瑞莱科技有限公司 | Earth surface environment comprehensive test platform with rapid temperature rise and fall capability |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120411 Termination date: 20130701 |