CN204924500U - Integral type electromagnetism calorimeter - Google Patents
Integral type electromagnetism calorimeter Download PDFInfo
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- CN204924500U CN204924500U CN201520754351.1U CN201520754351U CN204924500U CN 204924500 U CN204924500 U CN 204924500U CN 201520754351 U CN201520754351 U CN 201520754351U CN 204924500 U CN204924500 U CN 204924500U
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Abstract
Integral type electromagnetism calorimeter, including setting up in power module, central processing unit module, temperature detection module, excitation module and flow measurement module with on the circuit board, power module does respectively central processing unit module, temperature detection module, excitation module and flow measurement module provide operating voltage, the central processing unit module respectively with temperature detection module and flow measurement module electricity are connected, the excitation module with flow measurement module electricity is connected, temperature detection module respectively with heat exchange system in water supply temperature sensor and return water temperature sensor electricity be connected. Main part becomes an integral type product in traditional combination formula electromagnetism calorimeter of relating to heat exchange system behind redesign, therefore its global error can reduce, and can remove a lot of functions again simultaneously has iterative module, no longer need carry out processes such as iterative production in the past, debugging, ageing, installation, overall cost reduction, and operating stability strengthens by a wide margin.
Description
Technical field
The utility model relates to heating system apparatus field, particularly integrated electromagnetic calorimeter.
Background technology
9 Cr 2 steel using electromagnetic heating scale is mainly measured in real time to the supply water temperature of energe-carrying medium (liquid water) in heat-exchange system (as power-supply metering system and central air conditioner system etc.), return water temperature and instantaneous delivery, and according to thermodynamics energy balane formula, the cold of system consumption or calorie value are calculated and the device preserved.
In recent years, State Council is for accelerating heat metering reform, and again set aside large quantities of heating zones existing residential building heat metering and reducing energy consumption fund, a large amount of resident will live in " energy-conservation greenhouse ".Meanwhile, increasing high-grade office building, hotel, large-scale public construction, Commercial Complex, hospital, bank, school district, apartment all start large area and use central air conditioner system to carry out air quality monitoring adjustment and metering, therefore the use scenes of calorimeter also gets more and more, more and more extensively.
Calorimeter is different with principle according to hotlist flowmeter structure, can be divided into mechanical type (comprising turbine type, orifice-plate type, eddy currents), the kind such as ultrasonic type, electromagnetic type.Wherein, existing electromagnetic type calorimeter is all knockdown structure, be namely by electromagnetic flowmeter, temperature sensor and counter three independently component combination form.First be that electromagnetic flowmeter passes through Faraday's electromagnetic induction law, linear for instantaneous flow rate signal is changed to this electric signal of induction electromotive force, then be temperature sensor collecting temperature signal, finally by counter, the instantaneous flow rate signal obtained and temperature signal are carried out integrating, draw the energy value that we need.
In above-mentioned three kinds of calorimeters, it is simple that mechanical heat meter has manufacturing process, the advantages such as relative cost is lower, but cause the shortcomings such as the inaccurate even stopwatch of table metering because its mechanical rotor is easily stuck, and present stage uses not extensive.The advantages such as it is low that ultrasonic calorimeter has relative cost, and measuring accuracy is enough, but it has a critical component transducer, and effect is mutually changed electric signal and ultrasonic signal; And existing transducer is all ceramic transducer, easy fouling in water quality comparatively complex environment (heat-exchange system as China), cause the ultrasonic signal produced by can significantly decay during layer of scale, and then cause inaccurate even stopping of metering instrument to be measured.And existing 9 Cr 2 steel using electromagnetic heating scale is all combined hot scale, by three independently component combination form, especially in electromagnetic flowmeter and counter, there are respective independently circuit board (comprising power module, core processor module, communication module, memory module, human-computer interaction module etc.), shell, lead-in wire etc., cause its global error can be bigger than normal, need again to produce all parts separately simultaneously, debug, the repeated operation such as aging, installation, therefore there is the more high defect of overall cost.
Utility model content
For above-mentioned defect, the purpose of this utility model is to propose integrated electromagnetic calorimeter, by temperature detecting module, excitation module and flow detection module integration in CPU module, simplifies mounting structure and step, improves precision.
For reaching this object, the utility model by the following technical solutions:
Integrated electromagnetic calorimeter; Comprise the power module be arranged on same circuit board, CPU module, temperature detecting module, excitation module and flow detection module, described power module is respectively described CPU module, temperature detecting module, excitation module and flow detection module and provides operating voltage, described CPU module is electrically connected with described temperature detecting module and flow detection module respectively, during the stabilizing magnetic field B that excitation module described in hydro jet produces, produce induction electromotive force and input described flow detection module; Described temperature detecting module is connected with the supply water temperature sensor in heat-exchange system and return water temperature sensor electrical respectively.
Preferably, described flow detection module comprises the preamplifying circuit, second amplifying circuit and the three-stage amplifier that are electrically connected successively, and the signal input part of described preamplifying circuit is connected with electrode; During the stabilizing magnetic field B that excitation module described in hydro jet produces, electrode described in two produces electromotive force also successively after preamplifying circuit, second amplifying circuit and three-stage amplifier, convert digital signal to through analog-to-digital conversion module again, this digital signal is passed in described CPU module.
Preferably, described preamplifying circuit is instrument amplifier, and described second amplifying circuit and three-stage amplifier are dual operational amplifier;
The signal input part of described instrument amplifier is connected with electrode, the signal output part of described instrument amplifier is electrically connected with the signal input part of described second amplifying circuit, the signal output part of described two-stage amplifier is electrically connected with the signal input part of described three-stage amplifier, the signal output part of described three-stage amplifier is electrically connected with the signal input part of described analog-to-digital conversion module, and the signal output part of described analog-to-digital conversion module is electrically connected with the signal input part of described CPU module.
Preferably, described temperature detecting module comprises measuring resistance, three grades of transistors, analog switch module and protective resistances, described measuring resistance is connected with the e level of described three grades of transistors, and the two ends of described protective resistance are connected with the b level of described three grades of transistors, c level respectively; The e level of described three grades of transistors is electrically connected with the signal input part of described analog switch module, and described analog switch module is connected with described supply water temperature sensor, return water temperature sensor electrical respectively.
Preferably, described circuit board is also laid with clock module, described clock module is electrically connected with described CPU module;
Shown clock module comprises the crystal oscillating circuit, clock master chip and the battery component that are electrically connected successively, and described crystal oscillating circuit, battery component are electrically connected with described clock master chip respectively, and described clock master chip is electrically connected with described CPU module.
Preferably, described circuit board is also laid with communication module, described communication module is electrically connected with described CPU module;
Described communication module adopts RS485 communicating circuit, supports Modbus, BACnet, CJ/T188-2004 and enterprise network protocols multiple kinds.
Preferably, described circuit board is also laid with valve control module, described valve control module is electrically connected with described CPU module; Described valve control module is provided with valve controling circuit, the input end of described valve controling circuit accesses the common port (COM) of valve, normally closed node (CLOSE) respectively and often opens node (OPEN), can long-range closedown or open described valve and be laid in the refrigeration current in heat-exchange system or heat current with system after subscriber arrearage or payment.
Preferably, described circuit board is also laid with described human-computer interaction module, it comprises and is arranged on liquid crystal display on described calorimeter and man-machine interaction master chip, the output terminal of described man-machine interaction master chip is electrically connected with described liquid crystal display, and the input end of described man-machine interaction master chip is electrically connected with described CPU module.
Preferably, described human-computer interaction module is provided with photoelectric control circuit, and described photoelectric control circuit is controlled by Infrared push button.
Preferably, described circuit board is also laid with memory module, described memory module is electrically connected with described CPU module.
The beneficial effects of the utility model: parts main in conventional ASSEMBLE 9 Cr 2 steel using electromagnetic heating scale heat-exchange system related to become an integrated product after redesigning, therefore its global error can reduce, the module that a lot of function has repetition can be removed again simultaneously, the operations such as the production no longer needing in the past to repeat, debugging, aging, installation, therefore overall cost can reduce, and because it is unitary design, operation stability significantly strengthens.
Accompanying drawing explanation
Fig. 1 is the mounting structure figure of an embodiment of the present utility model;
Fig. 2 is the circuit structure diagram of an embodiment of flow detection module in the utility model;
Fig. 3 is the circuit structure diagram of an embodiment of temperature detecting module in the utility model;
Fig. 4 is the circuit structure diagram of an embodiment of clock module in the utility model;
Fig. 5 is the circuit structure diagram of an embodiment of communication module in the utility model;
Fig. 6 is the circuit structure diagram of an embodiment of liquid crystal display in the utility model;
Fig. 7 is the circuit structure diagram of an embodiment of man-machine interaction master chip in the utility model
Fig. 8 is the driving circuit figure of an embodiment of Infrared push button KEY1 in the utility model;
Fig. 9 is the driving circuit figure of an embodiment of Infrared push button KEY2 in the utility model;
Figure 10 is the driving circuit figure of an embodiment of Infrared push button KEY3 in the utility model;
Figure 11 is the driving circuit figure of an embodiment of Infrared push button KEY4 in the utility model;
Figure 12 is the circuit structure diagram of an embodiment of valve control module in the utility model;
Figure 13 is the circuit structure diagram of an embodiment of memory module in the utility model;
Figure 14 is the model calling figure of an embodiment of the present utility model.
Embodiment
The technical solution of the utility model is further illustrated by embodiment below in conjunction with accompanying drawing.
As shown in Fig. 1 and Figure 14, integrated electromagnetic calorimeter; Comprise the power module be arranged on same circuit board, CPU module, temperature detecting module, excitation module and flow detection module, described power module is respectively described CPU module, temperature detecting module, excitation module and flow detection module and provides operating voltage, described CPU module is electrically connected with described temperature detecting module and flow detection module respectively, during the stabilizing magnetic field B that excitation module described in hydro jet produces, produce induction electromotive force and input described flow detection module; Described temperature detecting module is connected with the supply water temperature sensor in heat-exchange system and return water temperature sensor electrical respectively.
In the water supply line that product (calorimeter) is arranged on heat-exchange system or water return pipeline, supply water temperature sensor and return water temperature sensor are arranged in corresponding water supply line and water return pipeline respectively, power module provides the supply voltage of needs for modules simultaneously;
Excitation module receive power module export voltage normally work after, a stabilizing magnetic field B perpendicular to body plane can be produced by current body, at current through this section of body, can according to Faraday's electromagnetic induction law, at caliber D within the scope of this, this stabilizing magnetic field is cut with its water velocity V (this flow velocity is the mean flow rate of body sectional area) along water (flow) direction, and on the electrode of body both sides, produce induction electromotive force U, according to the daraf(reciprocal of farad) law of electromagnetic induction, this formula is U=B*D*V, and according to this law, in body, no longer include other any parts (as the scintilloscope post in ultrasonic calorimeter or ballast resistor etc.) hinder current flowing, the pressure loss is close to zero,
After the electrode in body both sides produces induction electromotive force, this electromotive force can be passed to flow detection module by current body; Flow detection module, by after signal transacting, is sent in CPU module as the flow signal detected; After CPU module receives flow signal, then by temperature detecting module, the temperature value that collecting temperature sensor detects, inputs temperature value in CPU module as temperature signal finally by analog to digital conversion circuit;
After CPU module receives temperature signal and flow signal, flow rate calculation formula can be passed through
In formula: Q-----release or the heat attracted, unit is J or Wh;
Q
m-----flows through the mass rate of the water of calorimeter, and unit is kg/h;
Q
v-----flows through the volumetric flow rate of the water of calorimeter, and unit is m
3/ h;
P-------flows through the density of the water of calorimeter, and unit is kg/m
3;
△ h----is at the entrance and exit temperature of heat-exchange system, and the enthalpy of water is poor, and unit is J/kg;
τ-------time, unit is h.
Calculate heat, this heat is exactly the calorie value needing in heat-exchange system to calculate.
In the present embodiment, described flow detection module comprises the preamplifying circuit, second amplifying circuit and the three-stage amplifier that are electrically connected successively, during the stabilizing magnetic field B that current produce through described excitation module, the electromotive force produced is successively after preamplifying circuit, second amplifying circuit and three-stage amplifier, convert to after digital signal through analog-to-digital conversion module again, this digital signal is passed in described CPU module.
As shown in Figure 2, described flow detection module comprises the preamplifying circuit, second amplifying circuit and the three-stage amplifier that are electrically connected successively, and the signal input part of described preamplifying circuit is connected with electrode; During the stabilizing magnetic field B that excitation module described in hydro jet produces, electrode described in two produces electromotive force also successively after preamplifying circuit, second amplifying circuit and three-stage amplifier, convert digital signal to through analog-to-digital conversion module again, this digital signal is passed in described CPU module.
Signal is carried out 5-10 amplification doubly by preamplifying circuit, second amplifying circuit carries out filtering process to the signal after preamplifying circuit amplifies, three-stage amplifier carries out the amplification of 20 times to the signal of two-stage amplifying circuit process above, reach the signal of desirable strength, signal divides and multistagely successively processes amplification, filtering, noise reduction, ensure that the precision of process, be convenient to the control to signal.
Described preamplifying circuit is instrument amplifier, and described second amplifying circuit and three-stage amplifier are dual operational amplifier;
The signal input part of described instrument amplifier is connected with electrode, the signal output part of described instrument amplifier is electrically connected with the signal input part of described second amplifying circuit, the signal output part of described two-stage amplifier is electrically connected with the signal input part of described three-stage amplifier, the signal output part of described three-stage amplifier is electrically connected with the signal input part of described analog-to-digital conversion module, and the signal output part of described analog-to-digital conversion module is electrically connected with the signal input part of described CPU module.
Preferably, by instrument amplifier as preamplifying circuit, then by dual operational amplifier as second amplifying circuit and three-stage amplifier.
Instrument amplifier is a kind of special differential amplifier, has ultra-high input impedance, extremely good CMRR, low input offset, low output impedance, can effectively amplify the signal having common mode voltage to disturb;
Dual operational amplifier is that two universal operational amplifiers are integrated on a monolithic, has gain high, common-mode rejection ratio is high, common mode range is wide, compensation is simple, working stability, the feature such as between two amplifiers temperature stability is good.
In the technical program, what the signal input part of instrument amplifier connected is two electrodes made of 316L steel, during the stabilizing magnetic field B that current produce through (or claiming cutting) described excitation module, can produce induction electromotive force on two electrodes, this induction electromotive force can enter the signal input part of instrument amplifier.
Described temperature detecting module comprises measuring resistance, three grades of transistors, analog switch module and protective resistances, and described measuring resistance is connected with the e level of described three grades of transistors, and the two ends of described protective resistance are connected with the b level of described three grades of transistors, c level respectively; The e level of described three grades of transistors is electrically connected with the signal input part of described analog switch module, and described analog switch module is connected with supply water temperature sensor, return water temperature sensor electrical respectively; Temperature detection is accurate.
Preferably, described supply water temperature sensor and return water temperature sensor are two-wire system or four-wire system temperature sensor.
Described circuit board is also laid with clock module, and described clock module is electrically connected with described CPU module; Shown clock module comprises the crystal oscillating circuit, clock master chip and the battery component that are electrically connected successively, and described crystal oscillating circuit, battery component are electrically connected with described clock master chip respectively, and described clock master chip is electrically connected with described CPU module.CPU module is after calculating calorie value Q, current date and time can be drawn according to clock module, and calorie value Q is now stored according to date and time now, the convenient metering to heat in certain hour section, wherein, the circuit structure of described clock module as shown in Figure 4.
Described circuit board is also laid with communication module, and described communication module is electrically connected with described CPU module.The information that CPU module can will obtain, as the information such as flow value, temperature value, calorie value are uploaded in whole system by communication module, make whole system can obtain these information in real time, the convenient timely allotment to resource, wherein, the circuit structure of described communication module as shown in Figure 5.
Described communication module adopts RS485 communicating circuit, supports Modbus, BACnet, CJ/T188-2004 and enterprise network protocols multiple kinds.
If during product needed upgrading, remote upgrade can be carried out to product by RS485 circuit communication module, if no longer program burn writing will be carried out one by one by product in pairs as needing when carrying out program upgrade to product, only need now to carry out remote upgrade to all calorimeters in system platform.
As shown in figure 12, described circuit board is also laid with valve control module, described valve control module is electrically connected with described CPU module; Described valve control module is provided with valve controling circuit, the input end of described valve controling circuit accesses the common port (COM) of valve, normally closed node (CLOSE) respectively and often opens node (OPEN), can long-range closedown or open described valve and be laid in the refrigeration current in heat-exchange system or heat current with system after subscriber arrearage or payment.
System can carry out switch control rule by communication module and central processing unit to this circuit, thus reaches the object that Long-distance Control valve opens and closes, and can carry out closing or the operation such as Open valve when some subscriber arrearages or payment.
Described circuit board is also laid with described human-computer interaction module, it comprises and is arranged on liquid crystal display on described calorimeter and man-machine interaction master chip, the output terminal of described man-machine interaction master chip is electrically connected with described liquid crystal display, and the input end of described man-machine interaction master chip is electrically connected with described CPU module.
While data are uploaded to system by communication module, can these information be presented in man-machine interface by human-computer interaction module, and can be arranged by parameters part by Infrared push button, wherein, as shown in Figure 6, the circuit structure on man-machine interaction master chip as illustrated in figures 7-11 for the circuit structure that liquid crystal display adopts.
Preferably, described human-computer interaction module is provided with photoelectric control circuit, and described photoelectric control circuit is controlled by Infrared push button KEY1, KEY2, KEY3, KEY4; Arrange conveniently.
As shown in Figure 14 and Figure 13, described circuit board is also laid with memory module, described memory module is electrically connected with described CPU module.
Memory module in the technical program can store the cold and hot amount volume value of first 18 months every months and the cold and hot amount volume value consumed flow value, first three 11 every day and flow value, be convenient to the statistics and analysis to data after Long-Time Service, to facilitate, equipment adjusted in time.
In the technical program, parts main in conventional ASSEMBLE 9 Cr 2 steel using electromagnetic heating scale heat-exchange system related to become an integrated product after redesigning, therefore its global error can reduce, the module that a lot of function has repetition can be removed again simultaneously, the operations such as the production no longer needing in the past to repeat, debugging, aging, installation, therefore overall cost can reduce, and is unitary design due to it, and operation stability significantly strengthens.
Below know-why of the present utility model is described in conjunction with specific embodiments.These describe just in order to explain principle of the present utility model, and can not be interpreted as the restriction to the utility model protection domain by any way.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present utility model, and these modes all will fall within protection domain of the present utility model.
Claims (10)
1. integrated electromagnetic calorimeter, it is characterized in that: comprise the power module be arranged on same circuit board, CPU module, temperature detecting module, excitation module and flow detection module, described power module is respectively described CPU module, temperature detecting module, excitation module and flow detection module and provides operating voltage, described CPU module is electrically connected with described temperature detecting module and flow detection module respectively, during the stabilizing magnetic field B that excitation module described in hydro jet produces, produce induction electromotive force and input described flow detection module; Described temperature detecting module is connected with the supply water temperature sensor in heat-exchange system and return water temperature sensor electrical respectively.
2. integrated electromagnetic calorimeter according to claim 1, it is characterized in that: described flow detection module comprises the preamplifying circuit, second amplifying circuit and the three-stage amplifier that are electrically connected successively, and the signal input part of described preamplifying circuit is connected with electrode; During the stabilizing magnetic field B that excitation module described in hydro jet produces, electrode described in two produces electromotive force also successively after preamplifying circuit, second amplifying circuit and three-stage amplifier, convert digital signal to through analog-to-digital conversion module again, this digital signal is passed in described CPU module.
3. integrated electromagnetic calorimeter according to claim 2, is characterized in that: described preamplifying circuit is instrument amplifier, and described second amplifying circuit and three-stage amplifier are dual operational amplifier;
The signal input part of described instrument amplifier is connected with electrode, the signal output part of described instrument amplifier is electrically connected with the signal input part of described second amplifying circuit, the signal output part of described two-stage amplifier is electrically connected with the signal input part of described three-stage amplifier, the signal output part of described three-stage amplifier is electrically connected with the signal input part of described analog-to-digital conversion module, and the signal output part of described analog-to-digital conversion module is electrically connected with the signal input part of described CPU module.
4. integrated electromagnetic calorimeter according to claim 1, it is characterized in that: described temperature detecting module comprises measuring resistance, three grades of transistors, analog switch module and protective resistances, described measuring resistance is connected with the e level of described three grades of transistors, and the two ends of described protective resistance are connected with the b level of described three grades of transistors, c level respectively; The e level of described three grades of transistors is electrically connected with the signal input part of described analog switch module, and described analog switch module is connected with described supply water temperature sensor, return water temperature sensor electrical respectively.
5. integrated electromagnetic calorimeter according to claim 1, it is characterized in that: described circuit board is also laid with clock module, described clock module is electrically connected with described CPU module;
Shown clock module comprises the crystal oscillating circuit, clock master chip and the battery component that are electrically connected successively, and described crystal oscillating circuit, battery component are electrically connected with described clock master chip respectively, and described clock master chip is electrically connected with described CPU module.
6. integrated electromagnetic calorimeter according to claim 1, it is characterized in that: described circuit board is also laid with communication module, described communication module is electrically connected with described CPU module;
Described communication module adopts RS485 communicating circuit, supports Modbus, BACnet, CJ/T188-2004 and enterprise network protocols multiple kinds.
7. integrated electromagnetic calorimeter according to claim 6, it is characterized in that: described circuit board is also laid with valve control module, described valve control module is electrically connected with described CPU module; Described valve control module is provided with valve controling circuit, the input end of described valve controling circuit accesses the common port (COM) of valve, normally closed node (CLOSE) respectively and often opens node (OPEN), can long-range closedown or open described valve and be laid in the refrigeration current in heat-exchange system or heat current with system after subscriber arrearage or payment.
8. integrated electromagnetic calorimeter according to claim 6, it is characterized in that: described circuit board is also laid with described human-computer interaction module, it comprises and is arranged on liquid crystal display on described calorimeter and man-machine interaction master chip, the output terminal of described man-machine interaction master chip is electrically connected with described liquid crystal display, and the input end of described man-machine interaction master chip is electrically connected with described CPU module.
9. integrated electromagnetic calorimeter according to claim 8, it is characterized in that: described human-computer interaction module is provided with photoelectric control circuit, described photoelectric control circuit is controlled by Infrared push button.
10. integrated electromagnetic calorimeter according to claim 1, it is characterized in that: described circuit board is also laid with memory module, described memory module is electrically connected with described CPU module.
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| CN201520754351.1U CN204924500U (en) | 2015-09-25 | 2015-09-25 | Integral type electromagnetism calorimeter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105115630A (en) * | 2015-09-25 | 2015-12-02 | 广东艾科技术股份有限公司 | Integrated electromagnetic calorimeter |
| CN107782468A (en) * | 2016-08-30 | 2018-03-09 | 济南瀚舟电子技术有限公司 | A kind of electromagnetic heat meters |
-
2015
- 2015-09-25 CN CN201520754351.1U patent/CN204924500U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105115630A (en) * | 2015-09-25 | 2015-12-02 | 广东艾科技术股份有限公司 | Integrated electromagnetic calorimeter |
| CN107782468A (en) * | 2016-08-30 | 2018-03-09 | 济南瀚舟电子技术有限公司 | A kind of electromagnetic heat meters |
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