CN203643523U - Electric energy measuring circuit applied for shore container crane supply energy measurement - Google Patents

Electric energy measuring circuit applied for shore container crane supply energy measurement Download PDF

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Publication number
CN203643523U
CN203643523U CN201320677999.4U CN201320677999U CN203643523U CN 203643523 U CN203643523 U CN 203643523U CN 201320677999 U CN201320677999 U CN 201320677999U CN 203643523 U CN203643523 U CN 203643523U
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circuit
power
transformer
equipment
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冯双昌
薛季爱
陈瑞峰
仇润鹤
姚文庆
许海翔
周建波
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Donghua University
Shanghai Special Equipment Supervision and Inspection Technology Institute
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Donghua University
Shanghai Special Equipment Supervision and Inspection Technology Institute
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Abstract

An electric energy measuring circuit applied for shore container crane supply energy measurement belongs to the special equipment shore container crane supply energy measurement field; the electric energy measuring circuit comprises a power supply circuit and an electric energy measuring device; the power supply circuit comprises a high voltage switch cabinet, a main transformer, an auxiliary transformer, a power equipment main control cabinet and an auxiliary equipment switch; the high voltage switch cabinet is connected with a wharf power supply; an output of the high voltage switch cabinet are respectively connected with input ends of the main transformer and the auxiliary transformer; the power supply circuit function design comprises a power equipment power consumption portion and an auxiliary equipment power consumption portion: 1, power equipment power consumption behind the main transformer, a three-phase three-line power supply circuit is employed; 2, auxiliary equipment power consumption behind the auxiliary transformer, and a three-phase four-line power supply circuit is employed. The electric energy measuring circuit can be combined with a test platform measuring useful energy so as to finally obtain the energy usage efficiency of the crane.

Description

Be applied to shore container crane and supply with the electric energy measurement circuit that can measure
Technical field
The utility model relates to special equipment shore container crane and supplies with energy fields of measurement.
Background technology
Shore container crane, as a class of special equipment, is the fundamental equipments of the development of the national economy, and its security performance and operation conditions are directly connected to the people's the security of the lives and property and economic conditions.Along with improving constantly that people are familiar with resources and environment, large quantities of laws and regulations such as " Energy Conservation Law of the People's Republic of China ", the Law on Environmental Protection of the People's Republic of China are put into effect in succession." Energy Conservation Law of the People's Republic of China " clearly proposed the requirement of " to the special equipment of highly energy-consuming, carrying out energy-conservation examination and supervision according to the regulation of State Council ".Under this situation, energy-saving and emission-reduction will become the development trend of shore container crane, and Ye Shi enterprise reduces the important technical of operating cost.There is very large energy-saving potential as large electricity consumer's shore container crane.Carry out energy-saving and emission-reduction work, first should research and develop the efficiency measuring system of shore container crane, and develop the efficiency measuring system of a set of shore container crane, except obtaining the available energy of the actual acting of system dynamic equipment, also need to measure into whole system " injection " gross energy the efficiency of the actual use of the system of could finally evaluating and testing out energy.
Summary of the invention
The utility model object is to design shore container crane and supplies with the electric energy measurement circuit that can measure, and the efficiency that is specifically applied to shore container crane is measured.This metering circuit can be mated and entered shore container crane efficiency measuring system, adopts average weighted efficiency measuring method thereby can realize based on loaded-up condition rank.
The technical scheme that the utility model provides is:
Be applied to shore container crane and supply with the electric energy measurement circuit that can measure, it is characterized in that, whole electric energy measurement circuit comprises feed circuit and device for measurement of electrical energy;
The concrete structure of described feed circuit comprises high-tension switch cabinet, main-transformer, teaser transformer, power-equipment main control cabinet and utility appliance switch, high-tension switch cabinet access harbour power supply, high-tension switch cabinet output is connected with described main-transformer, teaser transformer input end respectively; Described power-equipment main control cabinet is as shore container crane device power-equipment energy supply input end, and described utility appliance switch is utility appliance energy supply input end;
Described feed circuit Functional Design comprises power-equipment electricity consumption and two parts of utility appliance electricity consumption, wherein:
The one, main-transformer power-equipment electricity consumption below, this part adopts three-phase three-wire system feed circuit, and specific design is A, B, C three-phase three-wire system feed circuit, is to be connected by described three-phase three-wire system feed circuit between main-transformer and power-equipment input end;
The 2nd, utility appliance electricity consumption after teaser transformer, this part adopts three-phase four-wire power supply circuit;
Described device for measurement of electrical energy access three-phase three-wire system feed circuit;
Described device for measurement of electrical energy is made up of main frame, voltage sensor ch1, voltage sensor ch2, current sensor ch1, current sensor ch2, display, described voltage sensor ch1, voltage sensor ch2, current sensor ch1, their output terminal of current sensor ch2 are connected with main frame respectively, and host output end is connected with display;
Described three-phase three-wire system feed circuit, specifically comprise parallel A phase, B phase, C three circuit mutually; Described device for measurement of electrical energy access three-phase three-wire system feed circuit annexation is:
The anodal connection circuit A phase of voltage sensor ch1, negative pole connection circuit B phase;
The anodal connection circuit C phase of voltage sensor ch2, negative pole connection circuit B phase;
Current sensor ch1 connection circuit A phase, current sensor ch2 connection circuit C phase.
Technical solutions of the utility model have ensured the power supply of whole measuring system, are provided with device for measurement of electrical energy in circuit, for measuring the actual total electric energy for power-equipment input of efficiency measuring system.Calculate the actual effectively acting of power-equipment that obtains efficiency measuring system by method of testing.Effective acting of the latter, except total electric energy of the device for measurement of electrical energy measurement in the former, obtains the energy service efficiency of crane.
Therefore, the utility model electric energy measurement circuit, in addition in conjunction with the experiment porch for measuring available energy, finally can obtain the energy service efficiency of crane, and it is applied to efficiency measuring system, can obtain the energy service efficiency of shore container crane.So promote, can science, react efficiency situation effectively, accurately, the measurement of the shore container crane efficiency of carrying out can be reacted the efficiency situation of shore container crane accurately, really.Measurement result can be the reducing energy consumption of manufacturer to existing product and the exploitation of new product provides guidance, also can be user and chooses shore container crane efficiency reference is provided.
Within a test period, choose multiple typical load values and carry out cyclic test, ratio according to the shared total degree of the corresponding lifting times of typical load is determined weighting coefficient, then by test result equivalent conversion to the duty cycle in the test period, calculate equivalent available energy, equivalence supply with can and efficiency.
Accompanying drawing explanation
Fig. 1 is the utility model electric energy measurement circuit diagram.
The overall architecture principle schematic of this available energy of Fig. 2 measuring system.
Fig. 3 is the testing process schematic diagram that is applied to shore container crane efficiency measuring system.
Embodiment
Below in conjunction with accompanying drawing, technical solutions of the utility model are described further.
In fact, the energy consumption of shore container crane says and can be divided into two parts from large aspect, the one, and the electricity consumption of main-transformer power-equipment below, this part adopts three-phase three-wire system power supply; The 2nd, the electricity consumption of utility appliance etc. after teaser transformer, this part adopts three-phase four-wire power supply.The electricity consumption of utility appliance is to be not counted in efficiency measuring system.
The three-phase three-wire system feed circuit of power-equipment are supplied with can measure time, adopted " two watts of meter methods ".Signal acquisition point is positioned at the output terminal of main-transformer.The anodal connection circuit A phase of voltage sensor CH1, negative pole connection circuit B phase.The anodal connection circuit C phase of voltage sensor CH2, negative pole connection circuit B phase.Current sensor CH1 connection circuit A phase, current sensor CH2 connection circuit C phase.
The current signal of the voltage signal of voltage sensor collection and current sensor collection inputs in main frame (only having the CPU processor of operation processing function), main frame carries out after simple process and calculating gained information, obtain supplying with energy, and show in liquid crystal display.As shown in Figure 1 and Figure 2, a kind of shore container crane that is applied to is supplied with the electric energy measurement circuit that can measure, and embodiments is:
Whole electric energy measurement circuit comprises feed circuit and device for measurement of electrical energy;
The concrete structure of described feed circuit comprises high-tension switch cabinet, main-transformer, teaser transformer, power-equipment main control cabinet and utility appliance switch, high-tension switch cabinet access harbour power supply, high-tension switch cabinet output is connected with described main-transformer, teaser transformer input end respectively; Described power-equipment main control cabinet is as shore container crane device power-equipment energy supply input end, and described utility appliance switch is utility appliance energy supply input end.
Described feed circuit Functional Design comprises power-equipment electricity consumption and two parts of utility appliance electricity consumption, wherein:
The one, main-transformer power-equipment electricity consumption below, this part adopts three-phase three-wire system feed circuit, and specific design is A, B, C three-phase three-wire system feed circuit, is to be connected by described three-phase three-wire system feed circuit between main-transformer and power-equipment input end;
The 2nd, utility appliance electricity consumption after teaser transformer, this part adopts three-phase four-wire power supply circuit.
Described device for measurement of electrical energy access three-phase three-wire system feed circuit are measured it, can measure and record total electric energy of outside input power equipment.Described device for measurement of electrical energy physics formation is made up of main frame, voltage sensor (ch1, ch2), current sensor (ch1, ch2), display and some wires, voltage sensor, its output terminal of current sensor are connected with main frame respectively, and host output end is connected with display.With the annexation of three-phase three-wire system feed circuit be:
Voltage sensor ch1 measures the line voltage between A phase and B phase, that is: the anodal connection circuit A phase of voltage sensor ch1, negative pole connection circuit B phase.
Voltage sensor ch2 measures the line voltage between C phase and B phase, that is: the anodal connection circuit C phase of voltage sensor ch2, negative pole connection circuit B phase.
Current sensor ch1 measures A phase current, and current sensor ch2 measures C phase current, that is: current sensor ch1 connection circuit A phase, current sensor ch2 connection circuit C phase.
The utility model can mate and is applied to shore container crane efficiency measuring system, this system also should comprise according to Functional Design, for example: design measuring table, using shore container crane device as research measuring object, build and can complete actual acting situation, support the mechanical energy of the tangential movement aspect that trolley body horizontal shift embodies and support lifting mechanism lifting mobile's trend of the times energy aspect acting situation;
Again for example, on measuring table, needing that shore container crane acting parts are completed to rising or falling speed parameter, the adjustable height parameter that horizontal velocity parameter, horizontal shift parameter and lifting activity that kinetic energy that horizontal shift consumes relates to relate to all gathers out, union goes out actual acting situation, and efficiency measuring system also needs to arrange the computer management system forming by moving horizontally range encoder, lifting altitude scrambler, respective processor and liquid crystal display thus.
The described shore container crane efficiency measuring system that is applied to, this measuring system is to be applied to based on loaded-up condition rank to adopt average weighted efficiency measuring method.Method is described below:
(1) adopt method of weighted mean to be optimized the quality of loads of measuring in test based on loaded-up condition rank.In the time measuring, not simply to get fixed load as test load, measure as test load but choose respectively several typical load, and adopt average weighted method to be equivalent to a duty cycle whole measuring period according to the ratio situation that typical load lifting times in expected life accounts for total degree.
(2) computing formula of available energy.If test load quality is
Figure DEST_PATH_IMAGE002
, working cycle available energy of shore container crane
Figure DEST_PATH_IMAGE004
computing formula can be optimized for:
Figure DEST_PATH_IMAGE006
In formula:
Figure 167975DEST_PATH_IMAGE004
the available energy in the cycle of doing one's assignment, unit is joule (J);
Figure 306832DEST_PATH_IMAGE002
container quality of loads, unit is ton (t);
Figure DEST_PATH_IMAGE008
suspender quality, unit is ton (t);
Figure DEST_PATH_IMAGE010
when unloaded, the height that suspender hoists, unit is rice (m);
Figure DEST_PATH_IMAGE012
there is the time of carrying, the height that container hoists, unit is rice (m);
Figure DEST_PATH_IMAGE014
when unloaded, the speed of the suspender that hoists, unit is metre per second (m/s) (m/s);
Figure DEST_PATH_IMAGE016
when unloaded, the speed of trolley travelling, unit is metre per second (m/s) (m/s);
Figure DEST_PATH_IMAGE018
there is the time of carrying, the speed of the container that hoists, unit is metre per second (m/s) (m/s);
Figure DEST_PATH_IMAGE020
there is the time of carrying, the speed of trolley travelling, unit is metre per second (m/s) (m/s);
Figure DEST_PATH_IMAGE022
when unloaded, the distance of trolley travelling, unit is rice (m);
Figure DEST_PATH_IMAGE024
there is the time of carrying, the distance of trolley travelling, unit is rice (m);
Figure DEST_PATH_IMAGE026
friction factor between steel wheel and rail, gets 0.015;
(3) while measuring test, lifting altitude and dolly displacement should be concrete numerical value, it should not a scope, can stipulate that its value is peaked 60%, so both can reflect qualitatively the variation tendency of efficiency, can effectively avoid again same shore container crane measure at every turn gained efficiency value all different situation occur.
(4) measurement procedure can be shown in Figure 3.At least repeated test three times under every kind of operating mode of every kind of typical load of each mechanism, computer management system display beyond the utility model reads the service data such as speed, distance that shore container crane efficiency measuring system gathers, measure and supply with energy by device for measurement of electrical energy of the present utility model, get the arithmetic mean of three subnormal measured values.Concrete testing procedure is as follows:
A) lifting mechanism is with rated speed zero load (being only with suspender) lifting, and lifting altitude should equal 60% of specified lifting altitude;
B) trolley body is with rated speed zero load (being only with suspender) operation, and the distance of trolley travelling should equal 60% of nominal distance;
C), with rated speed lifted load, quality of loads is got typical lifted load
Figure DEST_PATH_IMAGE028
, lifting altitude and A) in highly identical;
D) lifted load
Figure 533937DEST_PATH_IMAGE028
to A) described in height, dolly is with rated speed run with load, the distance of trolley travelling and B) middle distance is identical;
E) quality of loads is got typical lifted load successively
Figure DEST_PATH_IMAGE030
,
Figure DEST_PATH_IMAGE032
... with
Figure DEST_PATH_IMAGE034
replace , repeating step C) and D).
First the parameters data that, go out by the computer management system display exhibits beyond the utility model are carried out the calculating of available energy.Quality of loads is
Figure 831243DEST_PATH_IMAGE002
time, working cycle available energy of shore container crane
Figure 141002DEST_PATH_IMAGE004
computing formula be:
Figure 274043DEST_PATH_IMAGE006
In formula:
Figure 327450DEST_PATH_IMAGE004
the available energy in the cycle of doing one's assignment, unit is joule (J);
Figure 167230DEST_PATH_IMAGE002
container quality of loads, unit is ton (t);
suspender quality, unit is ton (t);
when unloaded, the height that suspender hoists, unit is rice (m);
there is the time of carrying, the height that container hoists, unit is rice (m);
Figure 55496DEST_PATH_IMAGE014
when unloaded, the speed of the suspender that hoists, unit is metre per second (m/s) (m/s);
when unloaded, the speed of trolley travelling, unit is metre per second (m/s) (m/s);
Figure 752374DEST_PATH_IMAGE018
there is the time of carrying, the speed of the container that hoists, unit is metre per second (m/s) (m/s);
Figure 147583DEST_PATH_IMAGE020
there is the time of carrying, the speed of trolley travelling, unit is metre per second (m/s) (m/s);
Figure 758693DEST_PATH_IMAGE022
when unloaded, the distance of trolley travelling, unit is rice (m);
there is the time of carrying, the distance of trolley travelling, unit is rice (m);
Figure 113768DEST_PATH_IMAGE026
friction factor between steel wheel and rail, gets 0.015;
The calculating of weighted mean available energy, one of shore container crane test period weighted mean available energy computing formula be:
Figure DEST_PATH_IMAGE038
Secondly, supply with and can adopt device for measurement of electrical energy of the present utility model to test, a test period weighted mean supply energy
Figure DEST_PATH_IMAGE040
computing formula as follows:
Figure DEST_PATH_IMAGE042
In formula:
Figure DEST_PATH_IMAGE044
be a test period weighted mean supply energy, J;
Figure DEST_PATH_IMAGE046
for steps A under idle condition) and the B) value that records,
Figure DEST_PATH_IMAGE048
;
Figure DEST_PATH_IMAGE050
-when lifted load be
Figure 437302DEST_PATH_IMAGE002
time, step C in working cycle) and the D) value that records,
Figure 840602DEST_PATH_IMAGE048
.
Finally, the calculating of efficiency.The computing formula of efficiency is as follows:
Figure DEST_PATH_IMAGE052
In formula:
Figure DEST_PATH_IMAGE054
for efficiency;
Figure 99545DEST_PATH_IMAGE036
it is a weighted mean available energy in test period;
Figure 853874DEST_PATH_IMAGE044
be that a weighted mean in test period is supplied with energy.

Claims (1)

1. be applied to shore container crane and supply with the electric energy measurement circuit that can measure, it is characterized in that, whole electric energy measurement circuit comprises feed circuit and device for measurement of electrical energy;
The concrete structure of described feed circuit comprises high-tension switch cabinet, main-transformer, teaser transformer, power-equipment main control cabinet and utility appliance switch, high-tension switch cabinet access harbour power supply, high-tension switch cabinet output is connected with described main-transformer, teaser transformer input end respectively; Described power-equipment main control cabinet is as shore container crane device power-equipment energy supply input end, and described utility appliance switch is utility appliance energy supply input end;
Described feed circuit Functional Design comprises power-equipment electricity consumption and two parts of utility appliance electricity consumption, wherein:
The one, main-transformer power-equipment electricity consumption below, this part adopts three-phase three-wire system feed circuit, and specific design is A, B, C three-phase three-wire system feed circuit, is to be connected by described three-phase three-wire system feed circuit between main-transformer and power-equipment input end;
The 2nd, utility appliance electricity consumption after teaser transformer, this part adopts three-phase four-wire power supply circuit;
Described device for measurement of electrical energy access three-phase three-wire system feed circuit;
Described device for measurement of electrical energy is made up of main frame, voltage sensor ch1, voltage sensor ch2, current sensor ch1, current sensor ch2, display, described voltage sensor ch1, voltage sensor ch2, current sensor ch1, their output terminal of current sensor ch2 are connected with main frame respectively, and host output end is connected with display;
Described three-phase three-wire system feed circuit, specifically comprise parallel A phase, B phase, C three circuit mutually; Described device for measurement of electrical energy access three-phase three-wire system feed circuit annexation is:
The anodal connection circuit A phase of voltage sensor ch1, negative pole connection circuit B phase;
The anodal connection circuit C phase of voltage sensor ch2, negative pole connection circuit B phase;
Current sensor ch1 connection circuit A phase;
Current sensor ch2 connection circuit C phase.
CN201320677999.4U 2013-10-31 2013-10-31 Electric energy measuring circuit applied for shore container crane supply energy measurement Expired - Fee Related CN203643523U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104076226A (en) * 2014-07-14 2014-10-01 武汉大学 Device and method for measuring energy efficiency of transformer based on voltage difference value and current difference value
CN106744321A (en) * 2016-11-24 2017-05-31 上海市特种设备监督检验技术研究院 Shore container crane efficiency detection method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104076226A (en) * 2014-07-14 2014-10-01 武汉大学 Device and method for measuring energy efficiency of transformer based on voltage difference value and current difference value
CN104076226B (en) * 2014-07-14 2017-11-10 武汉大学 Device and method based on voltage difference and current differential measuring transformer efficiency
CN106744321A (en) * 2016-11-24 2017-05-31 上海市特种设备监督检验技术研究院 Shore container crane efficiency detection method

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Granted publication date: 20140611

Termination date: 20151031

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