CN201435020Y - Power control system for refrigerated container thermal performance test - Google Patents
Power control system for refrigerated container thermal performance test Download PDFInfo
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- CN201435020Y CN201435020Y CN2009200681178U CN200920068117U CN201435020Y CN 201435020 Y CN201435020 Y CN 201435020Y CN 2009200681178 U CN2009200681178 U CN 2009200681178U CN 200920068117 U CN200920068117 U CN 200920068117U CN 201435020 Y CN201435020 Y CN 201435020Y
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Abstract
The utility model discloses a power control system for a refrigerated container thermal performance test, which comprises a high-precision voltage stabilizer, a SCR, a first power sensor, a second power sensor, a control device and an IPC. The input end of the high-precision voltage stabilizer is communicated with 220 V alternative current and the output end thereof is electrically connected withthe input end of the SCR. The input end of the SCR is connected with a fan and the output end thereof is connected with a heating wire heater. The input end of the SCR is further connected with the fan and the first power sensor. The output end of the SCR is connected with the heating wire heater and the second power sensor. The two power sensors are connected with the input end of the control device the output end of which is connected with the control end of the SCR. The output end of the control device is further connected with the IPC. The utility model controls the power stably by respectively supplying power and controlling the heater and the fan in a box directly and independently.
Description
Technical field
The utility model relates to power control system, particularly is applied to a kind of power control system of frozen products insulated container thermal property test.
Background technology
The encased conveying industry is as the core industry of modern logistics, the fast development of Ri Xinyueyiing, wherein the frozen products insulated container accumulating is a kind of high profit, high risk container accumulating, and it needs the reliable support of hi-tech, could effectively avoid excessive risk and obtains high profit.At present, power generally adopts relay control in the conventional frozen products insulated container thermal property test, the voltage of direct regulating box internal heater, the voltage that comprises the well heater blower fan, it is stable that this regulating and controlling mode makes that the power swing of system is difficult for, and the test result of gained can not satisfy each new relevant criterion, the requirement of agreement.This outer container inner control heating part does not have independent pressure stabilizing device, and the easier power control that makes system exceeds standard, and causes new refrigeration to hide the problem that container does not satisfy or do not meet relevant criterion, agreement, makes manufacturing enterprise face the claim in case east and faces huge reparations.
Have much about the improved patent of frozen products insulated container, wherein one piece of patent No. is 200620144532.3 disclosed refrigerated container safety intelligent detecting systems, and it is the safeguard measure to refrigerated container safety, can improve shipping efficient, strengthens cargo security.
Along with the fast development at harbour, city, encased conveying is frequent, and the power control system of conventional frozen products insulated container is not perfect, and the power control of system exceeds standard easily, influences testing result and efficient, causes damage for easily relevant manufacturing enterprise and case east.
The utility model content
Technical problem to be solved in the utility model is, a kind of power control system that is applied to the test of frozen products insulated container thermal property is provided, and is convenient to the stable control of power, is a kind of brand-new power control mode.
In order to address the above problem the technical solution of the utility model is such:
Be applied to a kind of power control system of frozen products insulated container thermal property test, it is characterized in that it comprises high precision voltage stabilizer, controllable silicon, first power sensor, second power sensor, control device and industrial computer;
The input end of described high precision voltage stabilizer taps into the 220V alternating current, and the output terminal of high precision voltage stabilizer is electrically connected with described silicon controlled input end;
Described silicon controlled input end connects the blower fan and first power sensor, first power sensor and fan parallel-connection, and described first power sensor connects the input end of control device, and the power signal that blower fan is turned round feeds back to described control device; The silicon controlled output terminal connects the strip heater and second power sensor, and second power sensor is in parallel with strip heater; Described second power sensor connects the input end of control device, and the power signal of strip heater work is fed back to described control device;
The control end of described control device connects described industrial computer.
Described first power sensor comprises first current transformer in order to the power signal that detects the blower fan running, and second power sensor comprises second current transformer in order to the power signal that detects strip heater work.
Described control device comprises a PLC device, temperature transmitter module, analog quantity output transducer module and analog quantity input transducer module; Described analog quantity output transducer module connects described silicon controlled control end, with control silicon controlled conduction angle; Described temperature transmitter module connects the some temperature sensors that are arranged in each point for measuring temperature in the casing, with the temperature in the detection case; The input end of described analog quantity input transducer module inserts first power sensor and second power sensor; Described first power sensor and second power sensor are accepted to send analog quantity input transducer in the control device to from the power signal of blower fan and strip heater and with it, by the analog quantity output transducer signal are transferred to controllable silicon again and control.
Controllable silicon phase regulator control heating power is adopted in the heat control that adds of described strip heater.
The other end of described PLC module is electrically connected with industrial computer by 232/485 interface, realizes finishing exchanges data with the communication of described industrial computer.
The case internal heater comprises blower fan and strip heater, and described blower fan and strip heater adopt the high precision voltage stabilizer separately, and firing equipment adopts unidirectional 220V voltage; Both actual realtime powers are recorded after by current sensor induction current and measuring voltage by described power sensor, and LED shows in real time.
Silicon controlled control directly is subjected to the control of PLC device, accept the 4-20mA signal of PLC device after action adjust the silicon controlled conduction angle so that power meets the demands.
Implementation method of the present utility model is as described below:
(1) blower fan of case internal heater part and the circuit of strip heater are kept apart;
(2) case internal heater part adopts the high precision voltage stabilizer separately, the circuit voltage stabilizing of giving case internal heater and blower fan, and firing equipment adopts unidirectional 220V voltage;
(3) controllable silicon phase regulator (SCR) control heating power is adopted in the heat control that adds of the heating wire in the heater section;
(4) power of case internal heater is divided into power of fan and strip heater power, and both gather respectively to become and send, and enters to give the SCR control signal more separately after handling behind the PLC device;
(5) power control mode of system is gathered power with 12 control signals that the measuring point medial temperature is a system in the case in the prerequisite of equilibrium temperature.
The beneficial effects of the utility model are, by directly to the independent voltage stabilizing of case internal heater, utilize the actual heating power of rreturn value control of medial temperature in the case, the independently-powered respectively and control of case internal heater and case internal heater blower fan simultaneously, be convenient to the stable control of power, make power can satisfy the accuracy requirement of standards such as GB, ISO, ATP or agreement.
Description of drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is a structural representation of the present utility model.
Wherein, A: high precision voltage stabilizer, B: controllable silicon, C: case internal heater, C1: blower fan, C2: strip heater, D1: first current transformer, D2: first current transformer, E1: first power sensor, E2: second power sensor, F: temperature transmitter module, G: analog quantity output transducer module, H: analog quantity input transducer module, the I:PLC device, J: temperature sensor, K: industrial computer.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
The utility model is applied to a kind of power control system of frozen products insulated container thermal property test, change former case internal power control heating part and do not had independent pressure stabilizing device situation, and the blower fan of case internal heater part and the circuit of strip heater are kept apart, case internal heater part adopts high precision voltage stabilizer, the circuit voltage stabilizing of giving case internal heater and blower fan separately.To the independent voltage stabilizing of case internal heater, utilize the actual heating power of rreturn value control of medial temperature in the case by directly, the stable control of power is convenient in the independently-powered respectively and control of case internal heater and case internal heater blower fan simultaneously.
Embodiment:
As shown in Figure 1, be applied to a kind of power control system of frozen products insulated container thermal property test, comprise high precision voltage stabilizer A, controllable silicon B, case internal heater C, blower fan C1, strip heater C2, the first current transformer D1, the first current transformer D2, the first power sensor E1, the second power sensor E2, control device, temperature transmitter module F, analog quantity output transducer module G, analog quantity input transducer module H, PLC device I, 12 temperature sensor J and industrial computer K.
The input end of high precision voltage stabilizer A taps into the 220V alternating current, and the output terminal of high precision voltage stabilizer A is electrically connected with the input end of controllable silicon B.
The output terminal of controllable silicon B is electrically connected with case internal heater C, and is the heating wire power supply of case internal heater, and the control of controllable silicon B is controlled by the PLC device I that is electrically connected with it directly.The input end of controllable silicon B connects the blower fan C1 and the first power sensor E1, and the first power sensor E1 is in parallel with blower fan C1, and the first power sensor E1 connects the input end of control device, and the power signal that blower fan C1 is turned round feeds back to control device; The output terminal of controllable silicon B connects the strip heater C2 and the second power sensor E2, and the second power sensor E2 is in parallel with strip heater C2; The second power sensor E2 connects the input end of control device, and the power signal that strip heater C2 is worked feeds back to described control device.
The control end of control device connects described industrial computer.
The first power sensor E1 comprises first a current transformer D1 in order to the power signal that detects the blower fan running, and the second power sensor E2 comprises second a current transformer D2 in order to the power signal that detects strip heater work.
Control device comprises a PLC device I, temperature transmitter module F, analog quantity output transducer module G and analog quantity input transducer module H; PLC device I one end connects temperature transmitter module F, analog quantity output transducer module G and analog quantity input transducer module H successively;
The control end of analog quantity output transducer module G and controllable silicon B is with the conduction angle of control controllable silicon B;
Temperature transmitter module F connects 12 temperature sensor J that are arranged in each point for measuring temperature in the casing, with the temperature in the detection case;
The input end of analog quantity input transducer module H inserts the first power sensor E1 and the second power sensor E2; The first power sensor E1 and the second power sensor E2 accept to send analog quantity input transducer module H in the control device to from the power signal of blower fan C1 and strip heater C2 and with it, by analog quantity output transducer module H signal are transferred to controllable silicon B again and control.
Temperature transmitter F 12 the temperature sensor J that are connected in parallel are by the temperature of each point in 12 uniform in case Pt100 measure case; Power control system records the actual heating power of rreturn value control of medial temperature with temperature sensor J.
The other end of PLC device I is electrically connected with industrial computer K by 232/485 interface, realizes finishing exchanges data with the communication of industrial computer K.
Case internal heater C comprise blower fan C1 with and strip heater C2, both actual realtime powers are recorded after by the first current transformer D1 and the second current transformer D2 induction current and measuring voltage by the first power sensor E1 and the second power sensor E2, and LED shows in real time.Controllable silicon phase regulator control heating power is adopted in the heat control that adds of strip heater C2.
The control of controllable silicon B directly is subjected to the control of PLC device I, accepts the conduction angle that controllable silicon B is adjusted in action behind the 4-20mA signal of PLC device I, so that power meets the demands.
Implementation method of the present utility model is as follows:
(1) the blower fan C1 of case internal heater C part and the circuit of strip heater C2 are kept apart;
(2) case internal heater C part adopts high precision voltage stabilizer A separately, the circuit voltage stabilizing of giving case internal heater C and blower fan C1, and firing equipment adopts unidirectional 220V voltage;
(3) controllable silicon B phase regulator (SCR) control heating power is adopted in the heat control that adds of the heating wire in the heater section;
(4) power of case internal heater C is divided into blower fan C1 power and strip heater C2 power, and both gather respectively to become and send, and enters to give controllable silicon B control signal more separately after handling behind the PLC device I;
(5) power control mode of system is gathered power with 12 control signals that the measuring point medial temperature is a system in the case in the prerequisite of equilibrium temperature.
Once more referring to Fig. 1, principle of work of the present utility model is: behind the pressure stabilization function of 220V alternating current through high precision voltage stabilizer A, input end as controllable silicon B, the output terminal of controllable silicon B is respectively the case internal heater heating wire power supply of frozen products insulated container, the control of controllable silicon B directly is subjected to the control of PLC device I, accept action behind the signal of 4-20mA of I and adjust the conduction angle of controllable silicon B, so that power meets the demands; Directly power separately through the 220V circuit after the voltage stabilizing for each blower fan of case internal heater, the power of case internal heater C is divided into two parts, blower fan C1 and strip heater C2, both actual realtime powers are recorded after by current transformer D induction current and measuring voltage by power sensor E, and LED shows in real time, and E can become the power collecting value of reality send to the 4-20mA signal and gives analog quantity input transducer H; Temperature transmitter F is by the temperature of each point in 12 uniform in case Pt100 measure case; PLC device I finishes the data base conditioning of system and the effect of device control, can calculate 12 medial temperatures and the total power of case internal heater, and the conduction angle keeping control B under the stable situation of medial temperature makes power be controlled in the stable scope.Simultaneously, PLC device I can realize exchanging with the communication data of industrial computer K by 232/485 interface.System's each several part collaborative work makes the case internal power can satisfy the requirement of each standard, agreement.
More than show and described ultimate principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the instructions just illustrates principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1, is applied to a kind of power control system of frozen products insulated container thermal property test, it is characterized in that it comprises high precision voltage stabilizer, controllable silicon, first power sensor, second power sensor, control device and industrial computer;
The input end of described high precision voltage stabilizer taps into the 220V alternating current, and the output terminal of high precision voltage stabilizer is electrically connected with described silicon controlled input end;
Described silicon controlled input end connects the blower fan and first power sensor, first power sensor and fan parallel-connection, and described first power sensor connects the input end of control device, and the power signal that blower fan is turned round feeds back to described control device; The silicon controlled output terminal connects the strip heater and second power sensor, and second power sensor is in parallel with strip heater; Described second power sensor connects the input end of control device, and the power signal of strip heater work is fed back to described control device;
The control end of described control device connects described industrial computer.
2, a kind of power control system that is applied to the test of frozen products insulated container thermal property according to claim 1, it is characterized in that, described first power sensor comprises first current transformer in order to the power signal that detects the blower fan running, and second power sensor comprises second current transformer in order to the power signal that detects strip heater work.
3, a kind of power control system that is applied to the test of frozen products insulated container thermal property according to claim 1, it is characterized in that described control device comprises a PLC device, temperature transmitter module, analog quantity output transducer module and analog quantity input transducer module; Described analog quantity output transducer module connects described silicon controlled control end, with control silicon controlled conduction angle; Described temperature transmitter module connects the some temperature sensors that are arranged in each point for measuring temperature in the casing, with the temperature in the detection case; The input end of described analog quantity input transducer module inserts first power sensor and second power sensor; Described first power sensor and second power sensor receive from the power signal of blower fan and strip heater and with it and send analog quantity input transducer in the control device to, by the analog quantity output transducer signal are transferred to controllable silicon again and control.
4, a kind of power control system that is applied to the test of frozen products insulated container thermal property according to claim 1 is characterized in that, controllable silicon phase regulator control heating power is adopted in the heat control that adds of described strip heater.
5, a kind of power control system that is applied to the test of frozen products insulated container thermal property according to claim 2, it is characterized in that, the other end of described PLC module is electrically connected with industrial computer by 232/485 interface, realizes finishing exchanges data with the communication of described industrial computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200681178U CN201435020Y (en) | 2009-02-26 | 2009-02-26 | Power control system for refrigerated container thermal performance test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200681178U CN201435020Y (en) | 2009-02-26 | 2009-02-26 | Power control system for refrigerated container thermal performance test |
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| Publication Number | Publication Date |
|---|---|
| CN201435020Y true CN201435020Y (en) | 2010-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009200681178U Expired - Lifetime CN201435020Y (en) | 2009-02-26 | 2009-02-26 | Power control system for refrigerated container thermal performance test |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101493713B (en) * | 2009-02-26 | 2011-05-18 | 上海海事大学 | Hot working performance test power control system of refrigerated container |
-
2009
- 2009-02-26 CN CN2009200681178U patent/CN201435020Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101493713B (en) * | 2009-02-26 | 2011-05-18 | 上海海事大学 | Hot working performance test power control system of refrigerated container |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100331 Effective date of abandoning: 20090226 |