CN203759213U - Low-voltage direct-current water resistance system - Google Patents
Low-voltage direct-current water resistance system Download PDFInfo
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- CN203759213U CN203759213U CN201420143183.8U CN201420143183U CN203759213U CN 203759213 U CN203759213 U CN 203759213U CN 201420143183 U CN201420143183 U CN 201420143183U CN 203759213 U CN203759213 U CN 203759213U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 239000000843 powder Substances 0.000 claims description 18
- 238000012360 testing method Methods 0.000 claims description 12
- 238000005259 measurement Methods 0.000 description 5
- 230000000630 rising effect Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009863 impact test Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
The utility model discloses a low-voltage direct-current water resistance system which comprises a load control device, a water resistance load device connected with the load control device and a power predicting device. The power predicting device is connected with the water resistance load device in parallel and connected with the load control device. The low-voltage direct-current water resistance system has the advantages has the advantages that reliable and continuous adjusting of the load power of the system can be achieved by the aid of the control of a remote PC (personal computer); a load power predicting function is provided, and the requirements for increasing and reducing loads of power generator sets can be well satisfied; a load device is simple in structure, flexible to control and applicable to various application occasions.
Description
Technical field
The utility model relates to group of motors detection technique field, especially a kind of low-voltage direct water resistance system.
Background technology
Newly make or the Turbo-generator Set of deliver from vault carrying out the impact of certain power, prominent while unloading test, we often can run into variety of issue, during as load impact, steam supply is not enough and shut down, vapour pressure that load is prominent while unloading sharply raises and causes safety valve action.For addressing these problems, we adopt two turbodynamo sets in parallel operation conventionally, then by the control of main distribution board realize load impact, prominent unload test.In the situation that lacking main distribution board, how to carry out Turbo-generator Set impact, it is prominent that to unload test be a difficult problem always.
The equipment of state's build-in test genset performance mainly contains two kinds at present: water resistance and dry type load box.Water resistance simple in structure, is easy to heat radiation, can carry out easily the continuous adjusting of power, can consume the electric energy of relatively high power, therefore adopts water load to be widely used as the low-voltage simulation load of genset.With respect to water resistance, the structure of dry type load box is comparatively complicated, can not carry out continuous adjusting to bearing power, must adopt blower fan to force it cooling, and need periodic maintenance simultaneously.Especially it is pointed out that dry type load box cost is high, the dry type load box of same capacity 2～4 times of water resistance often.
Instantly the water resistance load device generally using, employing be traditional electric control system, every suit load device all needs a set of special load device operator's console, is unfavorable for the robotization control of system and integrated.Meanwhile, the performance number of water resistance can not accurately be predicted, can not meet certain performance number impact, prominent testing requirements of unloading.The genset low-voltage direct water resistance load device of the utility model design, has well solved the problems referred to above.
Utility model content
The utility model, for the deficiencies in the prior art, proposes low-voltage direct water resistance system, and its bearing power can, by the control of long-range PC, realize reliable, continuous adjusting; There is the forecast function of bearing power, well meet the impact of genset to load, prominently unload requirement; Load device is simple in structure, controls flexibly, is applicable to various application scenarios.
In order to realize above-mentioned utility model object, the utility model provides following technical scheme:
Low-voltage direct water resistance system, comprises load control device and the water resistance load device with described load control device, also comprises powder prediction device,
Described powder prediction device is connected in parallel on described water resistance load device both sides, and is connected with described load control device.
Further, described load control device comprises the control module and the middle control loop that link together,
In the middle of described, control loop is connected with described water resistance load device and described powder prediction device.
Further, also comprise long-range PC, described control module is communicated by letter with described long-range PC.
Further, described powder prediction device comprises the A.C. contactor, current sensor and the prediction unit power supply that are cascaded, and voltage sensor is connected in parallel on described prediction unit power supply both sides,
In the middle of described, control loop is connected with described A.C. contactor, and described current sensor is connected with described control module with described voltage sensor.
Further, comprise the many groups of test macros that are made up of described load control device, described water resistance load device and powder prediction device, the described test macro of every cover is all communicated by letter with a PC.
The utility model low-voltage direct water resistance system, its bearing power can, by the control of long-range PC, realize reliable, continuous adjusting; There is the forecast function of bearing power, well meet the impact of genset to load, prominently unload requirement; Load device is simple in structure, controls flexibly, is applicable to various application scenarios.
Brief description of the drawings
Fig. 1 is the one-piece construction schematic diagram of low-voltage direct water resistance system described in the utility model;
Fig. 2 is the control principle schematic diagram of low-voltage direct water resistance system described in the utility model;
Fig. 3 is the principle schematic of powder prediction device described in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail, the description of this part is only exemplary and explanatory, should not have any restriction to protection domain of the present utility model.
Low-voltage direct water resistance system as shown in Figure 1 to Figure 3, comprises load control device and the water resistance load device with load control device, also comprises powder prediction device 4.
Under the requirement of Electricity Generation unit, low-voltage direct water resistance system can comprise the many groups of test macros that are made up of load control device, water resistance load device and powder prediction device 4, every cover test macro all can be communicated by letter with a long-range PC 1 by load control device, to realize Real-Time Monitoring and the power control of a long-range PC 1 to several water resistance load devices.
Load control device comprises the control module 2 and the middle control loop 3 that link together, the control module 2 using in the present embodiment is S7-200 PLC, middle control loop 3 is connected with water resistance load device and powder prediction device 4, control module 2 is communicated by letter with long-range PC 1, and controls water resistance load device and powder prediction device 4 by middle control loop 3.
Powder prediction device 4 is connected in parallel on water resistance load device both sides, and is connected with load control device.Powder prediction device 4 comprises two A.C. contactors 41, current sensor 42 and the prediction unit power supply 43 that are cascaded, voltage sensor 44 is connected in parallel on prediction unit power supply 43 both sides, and two A.C. contactors 41 are arranged on respectively the position near two nodes that are connected with water resistance load device.Middle control loop 3 is connected with A.C. contactor 41, by long-range PC 1 and control module 2 and then control the folding of A.C. contactor 41 by middle control loop 3.Current sensor 42 is connected with control module 2 with voltage sensor 44, and the electric current recording and voltage value are delivered to long-range PC 1 as simulating signal by control module 2.
Water resistance load device comprises water tank 51, pole plate 52, portal frame 53, electric lifting mechanism 54, water inlet pipe 55, rising pipe 56, voltage and current measurement device, junction box 58 and control box 59.Load control device and powder prediction device 4 are arranged in control box 59, and voltage and current measurement device is placed in junction box 58.Portal frame 53 is installed on electric lifting mechanism 54 tops, and bottom drives lifting by motor 510.Positive and negative pole plate 52 alternative arrangements are arranged on the portal frame 53 of electric lifting mechanism 54 both sides, and electric lifting mechanism 54 bottoms are arranged on the center of water tank 51.Water inlet pipe 55 is connected with water tank 51 bottoms with outlet valve 561 by water intaking valve 551 respectively with rising pipe 56.Run-down pipe 512 is from water tank 51 bottoms through stretching straight up, and overflow vent extends near 51 casees mouths of water tank, and run-down pipe 512 bottoms are connected with rising pipe 56.
Motor 510 is connected with the middle control loop 3 of load control device, controls motor 510 and turns round, and then control electric lifting mechanism 54 liftings by long-range PC 1 and control module 2.Voltage and current measurement device is connected with control module 2, using the voltage and current value recording as analog signal transmission to control module 2, and then be transferred to long-range PC 1.
When use, first, open water intaking valve 551, close outlet valve 561; Pole plate 52 is risen to most significant digit, make the bottom of pole plate 52 depart from the water surface, guarantee that water resistance load is in light condition; Carrying out before load test, guarantee that the A.C. contactor 41 of prediction unit is in gate-dividing state.
Then, carry out load experiment, by long-range PC 1, read in real time voltage, current value that voltage and current measurement device gathers, the power of water resistance load is carried out to real-time monitoring.And according to the needs of genset, the control by long-range PC 1 to water resistance load, completes the adjusting of bearing power.Meanwhile, the data that long-range PC 1 gathers by control module 2, to the running state real-time monitoring of water resistance load, ensure its safe and reliable operation.
If carry out the impact test of load, will be in the situation that confirming that major loop disconnects (be in Fig. 3 anodal 45 and negative pole 46 switch on), two A.C. contactors 41 of closure can read the predicted power value of water resistance load on long-range PC 1.If the requirement of the discontented podocytic process loading value of predicted power value, by the rising of pole plate 52 or the adjusting that declines, finely tunes predicted power value.After adjusting, disconnect two A.C. contactors 41, more closed major loop switch, can realize the impact test function of water resistance load.
The principle of predicted power value is: according to voltage sensor 44 and measured predicted voltage, the current value of current sensor 42
,
, by resistance calculations formula
, calculate the resistance value of water resistance load
; The genset output voltage values measured according to voltage and current measurement device again
, by rating formula
, can extrapolate the prediction bearing power value of water resistance load under genset output voltage
.
The utility model low-voltage direct water resistance system, its bearing power can, by the control of long-range PC, realize reliable, continuous adjusting; There is the forecast function of bearing power, well meet the impact of genset to load, prominently unload requirement; Load device is simple in structure, controls flexibly, is applicable to various application scenarios.
Claims (5)
1. low-voltage direct water resistance system, comprises load control device and the water resistance load device with described load control device, it is characterized in that, also comprises powder prediction device,
Described powder prediction device is connected in parallel on described water resistance load device both sides, and is connected with described load control device.
2. low-voltage direct water resistance system as claimed in claim 1, is characterized in that, described load control device comprises the control module and the middle control loop that link together,
In the middle of described, control loop is connected with described water resistance load device and described powder prediction device.
3. low-voltage direct water resistance system as claimed in claim 2, is characterized in that, also comprise long-range PC, described control module is communicated by letter with described long-range PC.
4. low-voltage direct water resistance system as described in claim 2 or 3, is characterized in that, described powder prediction device comprises the A.C. contactor, current sensor and the prediction unit power supply that are cascaded, and voltage sensor is connected in parallel on described prediction unit power supply both sides,
In the middle of described, control loop is connected with described A.C. contactor, and described current sensor is connected with described control module with described voltage sensor.
5. low-voltage direct water resistance system as claimed in claim 1, is characterized in that, comprise the many groups of test macros that are made up of described load control device, described water resistance load device and powder prediction device, the described test macro of every cover is all communicated by letter with a PC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420143183.8U CN203759213U (en) | 2014-03-27 | 2014-03-27 | Low-voltage direct-current water resistance system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420143183.8U CN203759213U (en) | 2014-03-27 | 2014-03-27 | Low-voltage direct-current water resistance system |
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| CN203759213U true CN203759213U (en) | 2014-08-06 |
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| CN201420143183.8U Expired - Lifetime CN203759213U (en) | 2014-03-27 | 2014-03-27 | Low-voltage direct-current water resistance system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086095A (en) * | 2017-06-22 | 2017-08-22 | 中国船舶重工集团公司第七0三研究所 | A kind of ohmic load kuppe |
| CN108562817A (en) * | 2018-07-16 | 2018-09-21 | 青岛海洋电气设备检测有限公司 | A kind of underwater equipment electric property detecting system and test method |
| CN109254181A (en) * | 2018-10-10 | 2019-01-22 | 大禹电气科技股份有限公司 | Water resistance device for electric performance test |
| CN109507582A (en) * | 2018-10-10 | 2019-03-22 | 大禹电气科技股份有限公司 | Water resistance load regulating device |
| CN113702827A (en) * | 2021-08-30 | 2021-11-26 | 中国船舶重工集团公司第七O三研究所无锡分部 | Automatic power pre-adding device for low-pressure water resistor |
-
2014
- 2014-03-27 CN CN201420143183.8U patent/CN203759213U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086095A (en) * | 2017-06-22 | 2017-08-22 | 中国船舶重工集团公司第七0三研究所 | A kind of ohmic load kuppe |
| CN108562817A (en) * | 2018-07-16 | 2018-09-21 | 青岛海洋电气设备检测有限公司 | A kind of underwater equipment electric property detecting system and test method |
| CN109254181A (en) * | 2018-10-10 | 2019-01-22 | 大禹电气科技股份有限公司 | Water resistance device for electric performance test |
| CN109507582A (en) * | 2018-10-10 | 2019-03-22 | 大禹电气科技股份有限公司 | Water resistance load regulating device |
| CN113702827A (en) * | 2021-08-30 | 2021-11-26 | 中国船舶重工集团公司第七O三研究所无锡分部 | Automatic power pre-adding device for low-pressure water resistor |
| CN113702827B (en) * | 2021-08-30 | 2024-02-09 | 中国船舶重工集团公司第七O三研究所无锡分部 | Automatic power pre-adding device for low-voltage water resistor |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Effective date of registration: 20151102 Address after: 150000 No. 35, Honghu Road, Yingbin Road, Harbin hi tech Development Zone, Heilongjiang, China Patentee after: HARBIN GUANGHAN POWER TECHNOLOGY DEVELOPMENT CO.,LTD. Address before: 214000, Jiangsu, Wuxi Province, Binhu District, Qin New Branch Lane No. 19 Patentee before: WUXI BRANCH, NO.703 RESEARCH INSTITUTE OF CHINA SHIPBUILDING INDUSTRY Corp. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140806 |