CN206531655U - A kind of heat exchanger energy efficiency detection device - Google Patents
A kind of heat exchanger energy efficiency detection device Download PDFInfo
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- CN206531655U CN206531655U CN201720113567.9U CN201720113567U CN206531655U CN 206531655 U CN206531655 U CN 206531655U CN 201720113567 U CN201720113567 U CN 201720113567U CN 206531655 U CN206531655 U CN 206531655U
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Abstract
The utility model provides a kind of heat exchanger energy efficiency detection device, including flow detector, temperature-detecting device, differential pressure measuring device and host data processing unit, flow detector is suitable to detect the rate-of flow in thermal medium and cold medium inlet ductwork, temperature-detecting device is suitable to thermal medium inlet and export pipeline, medium temperature in cold medium inlet and outlet pipeline is detected, differential pressure measuring device is suitable to thermal medium inlet and export pipeline, medium differential pressure between cold medium inlet and outlet pipeline is detected, host data processing unit and flow detector, temperature-detecting device, differential pressure measuring device is connected respectively, and suitable for the rate-of flow to detection, temperature and differential pressure signal carry out processing conversion and calculate display.The application can realize flow, temperature, the collection of differential pressure basic data, the height for quickly judging heat exchanger energy efficiency value, infer the degree of heat exchanger heat transfer ability quality, be used as the basis for estimation of heat exchanger maintenance work.
Description
Technical field
The utility model is related to heat exchanger energy efficiency technical field, and in particular to a kind of heat exchanger energy efficiency detection device.
Background technology
Heat exchanger, as thermal energy conversion device important in the national economic development, is a kind of at two kinds of different temperatures or two
Kind to realize the energy-saving equipment of heat transfer between material between upper fluid, its major function is heat is transmitted by higher fluid
The fluid relatively low to temperature, makes fluid temperature (F.T.) reach technological process set quota, to meet the need of industrial process process conditions
Will, while improving the energy utilization rate of industrial process.Wherein, industrial heat exchangers are divided into plate type heat exchanger and pipe shell type heat exchange
Device.
Heat exchanger is not only the equipment for ensureing that technological process and condition are generally used, and is also to develop industrial secondary energy
Source, the capital equipment for realizing recuperation of heat and the saving energy, thus it is very common in the industrial production, it is widely used in national economy
All departments, the industry being related to include power, chemical industry, oil, metallurgy, nuclear energy, space flight and aviation, food, weaving, heating, refrigeration
Deng.Based on the demand growth that every profession and trade heat exchanging device is stable, China's heat exchanger industry will keep stable within following one period
Increase, it is contemplated that during 2015 to the year two thousand twenty, China's heat exchanger industry increases the speed for keeping average annual 10-15% or so.Mesh
Before, national heat exchanger market shows tight market state, and heat transmission equipment industry is in the gold rise period, to 2020
Year China heat exchanger industry scale is expected to reach 150,000,000,000 yuan.
With continuing to develop for China's industry, using energy source, exploitation and the requirement saved are improved constantly, thus heat exchanging
The requirement of device is also constantly strengthened, and the attention of the exchange capability of heat of heat exchanging device, i.e. thermal property is increasingly improved, to the synthesis of its efficiency
Schedule has also been put in evaluation.Printed and distributed in State Council《The ＂ national strategy new industry development plans of ＂ 12》In point out to surround
The big industrial circle of wide application, energy-saving potential, implements major technologies and equipment industrial demonstration projects.By 2015, efficiently save
Can technology and EQUIPMENT MARKET GUIDE occupation rate bring up to 30% or so, innovation ability and equipment ability are close to international most advanced level.
《The ＂ of energy-saving and emission-reduction ＂ 12 are planned》In be even more to explicitly point out, promote efficiency level to improve and first have to strengthen industrial energy saving.Adhere to
Take a new road to industrialization, by hard objectives task, strengthen industry guidance, Promote Technology, Mg-GIK Polarized liquid management, promote
Industrial key industry energy-conservation.Therefore the research that industrial visual plant heat exchanger carries out efficiency assessment method is particularly important,
Efficiency evaluation is not directly comparing for heat exchanger coefficient of heat transfer height, nor the overall merit of exchange capability of heat and flow resistance,
But the technical and economy of heat exchanging device using energy source is evaluated, and provides efficiency grade, and industrial production and popularization are made
With energy-saving type heat exchanger there is highly important directive significance and practice to act on.
Heat exchanger energy efficiency evaluation is before other characteristics of product, such as performance, quality, safety and overall price is not reduced
Put, evaluate the process of product energy performance.Energy Labeling is affixed to a kind of information labels on energy-consuming product, for representing production
The energy characteristicses of product, such as power consumption, energy efficiency or energy cost form, are that user submits necessary information.This practicality is new
The inventor of type has found that current China has carried out efficiency evaluation system to tens kinds of products for being related to using energy source by investigation
And corresponding standard has been promulgated, but the work of heat exchanging device efficiency evaluation is also in research discussion, in existing detection device
Also without can centralized detecting calculate in the equipment with the actual efficiency of heat exchanger, therefore set about development heat exchanger energy efficiency detection device
Seem very necessary.
Utility model content
For technical problem present in prior art, the utility model provides a kind of heat exchanger energy efficiency detection device, should
Device can realize the collection of the basic datas such as flow, temperature, differential pressure, and calculate the heat such as the overall heat-transfer coefficient for showing heat exchanger in real time
Work performance and drag characteristic, for the quick height for judging heat exchanger energy efficiency value, infer heat exchanger heat transfer ability quality according to this
Degree, whether need to be overhauled or taken apart a basis for estimation for removing the maintenance works such as internal dirt as heat exchanger.
In order to solve the above-mentioned technical problem, the utility model employs following technical scheme：
A kind of heat exchanger energy efficiency detection device, the heat exchanger includes heat medium pipeline and cold medium pipeline, and the heat is situated between
Matter pipeline includes the thermal medium inlet pipeline and thermal medium outlet pipeline that connection is set, and the cold medium pipeline includes connection and set
Cold medium inlet ductwork and cold medium export pipeline, the detection device include flow detector, temperature-detecting device, difference
Detection means and host data processing unit are pressed, the flow detector is suitable to thermal medium inlet pipeline and cold medium import
Rate-of flow in pipeline detected, the temperature-detecting device be suitable to thermal medium inlet pipeline, thermal medium outlet pipeline,
Medium temperature in cold medium inlet ductwork and cold medium export pipeline is detected that the differential pressure measuring device is suitable to heat Jie
Medium differential pressure between matter inlet ductwork and thermal medium outlet pipeline, between cold medium inlet ductwork and cold medium export pipeline is entered
Row detection, the host data processing unit is connected respectively with flow detector, temperature-detecting device, differential pressure measuring device,
And suitable for carrying out processing conversion to the rate-of flow of detection, medium temperature and medium differential pressure signal and calculating to show.
Further, the flow detector includes ultrasonic flow sensor and data on flows transmission line, the ultrasound
Wave flow sensor is separately positioned on thermal medium inlet pipeline and cold medium inlet ductwork, and the one of the data on flows transmission line
End is connected with ultrasonic flow sensor, and the other end is connected with host data processing unit.
Further, the ultrasonic flow sensor is contact or external clamping ultrasonic flow sensor.
Further, the contact ultrasonic flow sensor is arranged on the opening of pipeline by way of being bonded or welding
On, the external clamping ultrasonic flow sensor is fixed on pipeline by bandage, and between tube wall face between scribble couplant.
Further, the temperature-detecting device includes SMD temperature sensor and temperature data transmission line, the paster
Formula temperature sensor is separately positioned on thermal medium inlet pipeline, thermal medium outlet pipeline, cold medium inlet ductwork and cold medium and gone out
On mouth pipeline, one end of the temperature data transmission line is connected with SMD temperature sensor, and the other end is handled with host data
Device is connected.
Further, the SMD temperature sensor is using platinum resistance thermometer sensor, temperature-sensing element and with the pure of excellent heat conductivity performance
Copper material bending forms the patch combination with setting radian and constituted.
Further, the thermal medium inlet pipeline, thermal medium outlet pipeline, cold medium inlet ductwork and cold medium outlet
The tube wall face on road is circumferentially evenly arranged four SMD temperature sensors.
Further, the differential pressure measuring device includes the first connecting tube, switch valve, plastics conduction pipe, the second connecting tube, three
Port valve and differential pressure pick-up, one end of first connecting tube respectively with thermal medium inlet pipeline, thermal medium outlet pipeline, cold Jie
Matter inlet ductwork is connected with the medium in cold medium export pipeline, and the other end of first connecting tube passes through switch valve and plastics
One end connection of conduction pipe, the other end of the plastics conduction pipe passes through the second connecting tube and taking in host data processing unit
Hole connection is pressed, the triple valve is in the second connecting tube, and the differential pressure pick-up is arranged inside host data processing unit
And connected with pressure port.
Further, the host data processing unit includes device case, in described device housing provided with integrating instrument and with
Flow signal processing converting unit, processes temperature signal converting unit and the differential pressure signal processing conversion that integrating instrument is connected respectively are single
Member, the other end of the flow signal processing converting unit is connected with data on flows transmission line, the processes temperature signal conversion
The other end of unit is connected with temperature data transmission line, and one end of the differential pressure signal processing converting unit connects with differential pressure pick-up
Connect, the front of described device housing is provided with the display being connected with integrating instrument, and the side of described device housing is provided with setting differential pressure
The pressure port of sensor.
Further, the integrating instrument selects model SB-2100C integrating instrument.
Compared with prior art, the heat exchanger energy efficiency detection device that the utility model is provided, highly integrated flow detection
Device, temperature-detecting device, differential pressure measuring device and host data processing unit, have accomplished system integration integration, Ke Yishi
The collection of the basic datas such as existing temperature, differential pressure, flow, moreover it is possible to which fluid Reynolds is carried out according to preset calculation formula by integrating instrument
Number, logarithmic mean temperature difference (LMTD), cold and hot side heat flow, thermal balance error, the calculating and display of overall heat-transfer coefficient and efficiency, can be greatly square
Just industry spot is in the detection with heat exchanger energy efficiency parameter.Therefore, the detection device that the application is provided can be used for detection heat exchanger
Thermal property and drag characteristic, the quick height for judging heat exchanger energy efficiency value, infer the journey of heat exchanger heat transfer ability quality according to this
Whether degree, need to be overhauled or taken apart a basis for estimation of the maintenance work for removing internal dirt etc as heat exchanger.
Brief description of the drawings
Fig. 1 is the heat exchanger energy efficiency detection device principle schematic that the utility model embodiment is provided.
Fig. 2 is the heat exchanger energy efficiency assay device structures schematic diagram that the utility model embodiment is provided.
Fig. 3 is a kind of differential pressure measuring apparatus structure schematic diagram that the utility model embodiment is provided.
Fig. 4 is the host data processing unit principle schematic that the utility model embodiment is provided.
In figure, 1, heat exchanger；11st, thermal medium inlet pipeline；12nd, thermal medium outlet pipeline；13rd, cold medium inlet ductwork；
14th, cold medium export pipeline；2nd, flow detector；21st, ultrasonic flow sensor；22nd, data on flows transmission line；3rd, temperature
Detection means；31st, SMD temperature sensor；32nd, temperature data transmission line；4th, differential pressure measuring device；41st, the first connecting tube；
42nd, switch valve；43rd, plastics conduction pipe；44th, the second connecting tube；45th, triple valve；46th, differential pressure pick-up；5th, host data is handled
Device；51st, device case；52nd, integrating instrument；53rd, flow signal processing converting unit；54th, processes temperature signal converting unit；
55th, differential pressure signal processing converting unit；56th, display.
Embodiment
In order that technological means, creation characteristic, reached purpose and effect that the utility model is realized are easy to understand, under
Face combines and is specifically illustrating, and the utility model is expanded on further.
In description of the present utility model, it is to be understood that term " longitudinal direction ", " radial direction ", " length ", " width ", " thickness
The side of the instruction such as degree ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer "
Position or position relationship are, based on orientation shown in the drawings or position relationship, to be for only for ease of description the utility model and simplification is retouched
State, rather than indicate or imply that the device or element of meaning there must be specific orientation, with specific azimuth configuration and operation,
Therefore it is not intended that to limitation of the present utility model.In description of the present utility model, unless otherwise indicated, " multiples' " contains
Justice is two or more.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
It refer to shown in Fig. 1-Fig. 4, the utility model provides a kind of heat exchanger energy efficiency detection device, the heat exchanger 1 is wrapped
Heat medium pipeline and cold medium pipeline are included, the heat medium pipeline includes the thermal medium inlet pipeline 11 and thermal medium that connection is set
Export pipeline 12, the cold medium pipeline includes cold medium inlet ductwork 13 and the cold medium export pipeline 14 that connection is set, institute
Stating detection device includes flow detector 2, temperature-detecting device 3, differential pressure measuring device 4 and host data processing unit 5, institute
Flow detector 2 is stated to be suitable to detect the rate-of flow in thermal medium inlet pipeline 11 and cold medium inlet ductwork 13,
The temperature-detecting device 3 is suitable to thermal medium inlet pipeline 11, thermal medium outlet pipeline 12, cold medium inlet ductwork 13 and cold
Medium temperature in media outlet pipeline 14 is detected, to obtain the import and export temperature difference of the cold and hot side medium of heat exchanger, the difference
Press detection means 4 be suitable to between thermal medium inlet pipeline 11 and thermal medium outlet pipeline 12, cold medium inlet ductwork 13 with it is cold
Medium differential pressure between media outlet pipeline 14 is detected, the pressure drop after heat exchanger is flowed through to obtain the cold and hot medium of heat exchanger,
The host data processing unit 5 is connected with flow detector 2, temperature-detecting device 3, differential pressure measuring device 4, and fitted respectively
In carrying out processing conversion to the rate-of flow of detection, medium temperature and medium differential pressure signal, calculated by preset calculation formula
Go out cold and hot medium or cold fluid and hot fluid Reynolds number, logarithmic mean temperature difference (LMTD), cold and hot side heat flow, thermal balance error, overall heat-transfer coefficient and
The parameters such as efficiency are simultaneously shown.
As specific embodiment, it refer to shown in Fig. 2, the flow detector 2 includes ultrasonic flow sensor 21
With data on flows transmission line 22, the ultrasonic flow sensor 21 is separately positioned on thermal medium inlet pipeline 11 and cold medium is entered
On mouth pipeline 13, one end of the data on flows transmission line 22 is connected with ultrasonic flow sensor 21, the other end and host number
Connected according to processing unit 5, be achieved in carrying out the rate-of flow in thermal medium inlet pipeline 11 and cold medium inlet ductwork 13
Detection.The ultrasonic flow sensor 21 is that ultrasonic wave output is produced in the presence of electric signal, and can turn acoustic signals
It is changed to the device of electric signal.As a kind of embodiment, the flow detector 2 needs to measure thermal medium and cold medium simultaneously
Flow, thus using two-channel ultrasonic flow sensor 21, possess two-channel measurement function, that is, have two pairs of sensors, energy
The flow at two is measured simultaneously.The ultrasonic flow sensor 21 is two pairs and is arranged in thermal medium inlet pipeline 11 and cold
The sensor of medium entrance pipeline 13, according to pipeline feature and the optional contact ultrasonic flow sensor of installation environment or outer clip
Formula ultrasonic flow sensor.The ultrasonic flow sensor 21 is measured using ultrasonic wave propagation characteristic in a fluid
Flow, i.e. a pair of sensors A and B is arranged on pipeline upstream and downstream, alternate emission and received ultrasonic signal, and ultrasonic wave is believed all the way
Number along medium motion direction propagate, all the way ultrasonic signal against medium motion direction propagate, when fluid is static, two-way ultrasonic wave
Propagation time is equal, when fluid motion, because ultrasonic signal spread speed is faster than adverse current spread speed, can produce propagation
Time difference Δ τ.The flow velocity V of fluid is directly proportional to Δ τ, thus can measure fluid flow.
As specific embodiment, the contact ultrasonic flow sensor is arranged on pipe by way of being bonded or welding
In the opening on road, or by special pipe hoop ball valve base is fixed on tested pipeline, connected using hole making drill sealing sheath
Drilled after ball valve base, be inserted into contact ultrasonic flow sensor；The external clamping ultrasonic flow sensor passes through
Bandage is fixed on pipeline, and between the tube wall face of tested pipeline between scribble appropriate couplant, thus can be by supersonic flow
Quantity sensor is preferably fitted in cold and hot medium inlet road surfaces, it is ensured that ultrasonic signal good communication.
As specific embodiment, it refer to shown in Fig. 2, the temperature-detecting device 3 includes SMD temperature sensor 31
With temperature data transmission line 32, the SMD temperature sensor 31 is separately positioned on thermal medium inlet pipeline 11, thermal medium and gone out
On mouth pipeline 12, cold medium inlet ductwork 13 and cold medium export pipeline 14, one end of the temperature data transmission line 32 and patch
Chip temperature sensor 31 is connected, and the other end is connected with host data processing unit 5, is achieved in cold and hot medium inlet and outlet pipe
The detection of medium temperature in road, obtains the import and export temperature difference t of the cold and hot side medium of heat exchanger according to this.Wherein, the SMD temperature
Degree sensor 31 refers to that temperature can be experienced and is converted into the sensor of usable output signal, and sensor has certain thin slice
Formula shape is preferably to measure body surface temperature, and the temperature survey on particularly pipe surface needs paster to have certain arc
Degree.As a kind of embodiment, the SMD temperature sensor 31 uses platinum resistance thermometer sensor, temperature-sensing element (according to thermometric condition not
With optional Pt1000 or Pt100) and fine copper material bending with excellent heat conductivity performance form the paster with setting radian
Combination is constituted, and relation between RTD and temperature is close to linear.The spy of SMD temperature sensor when use
Head front end is in close contact perpendicular to testee, and object under test, and testee can be extrapolated by the resistance for measuring RTD
Temperature, the temperature survey that this RTD can be used in -200 DEG C~+850 DEG C temperature ranges.
As specific embodiment, the thermal medium inlet pipeline 11, thermal medium outlet pipeline 12, cold medium inlet ductwork 13
Four SMD temperature sensors 31 are circumferentially evenly arranged with the tube wall face of cold medium export pipeline 14, thus can be situated between to cold and hot
Medium temperature in matter the import and export pipeline is measured comprehensively, improves the degree of accuracy of measurement.Certainly, those skilled in the art
On the basis of previous embodiment, two, three or multiple SMD temperature can also be circumferentially evenly arranged in tube wall face
Sensor 31, to meet actual measurement needs.
As specific embodiment, refer to shown in Fig. 2 and Fig. 3, the differential pressure measuring device 4 include the first connecting tube 41,
Switch valve 42, plastics conduction pipe 43, the second connecting tube 44, triple valve 45 and differential pressure pick-up 46, first connecting tube 41
One end respectively with thermal medium inlet pipeline 11, thermal medium outlet pipeline 12, cold medium inlet ductwork 13 and cold medium export pipeline
Medium connection in 14, the other end of first connecting tube 41 is connected by switch valve 42 with one end of plastics conduction pipe 43,
The other end of the plastics conduction pipe 43 is connected by the second connecting tube 44 with the pressure port in host data processing unit 5, institute
Triple valve 45 is stated in the second connecting tube 44, the differential pressure pick-up 46 be arranged at the inside of host data processing unit 5 and with
Pressure port is connected.Specifically, dig out an opening on cold and hot medium inlet and outlet pipeline, by one end of first connecting tube 41 with
The open-top screw thread is connected, and the other end of first connecting tube 41 and one end of plastics conduction pipe 43 are socketed in switch valve 42
Portion, the other end of the plastics conduction pipe 43 is socketed in outside one end of the second connecting tube 44, second connecting tube 44 it is another
One end is plugged on the inside of host data processing unit 5 and set on the pressure port of differential pressure pick-up 46, and the triple valve 45 is arranged on
, thus can be by the medium by-path turn-on in cold and hot medium inlet and outlet pipeline to pressure port in second connecting tube 44, and can arrange
Release in plastics conduction pipe 43 and the air being mixed into is installed, medium differential pressure measuring is carried out by differential pressure pick-up 46, to obtain heat exchange
The cold and hot medium of device flows through the pressure drop after heat exchanger.
As specific embodiment, it refer to shown in Fig. 2 and Fig. 4, the host data processing unit 5 includes device case
51, the interior flow signal processing converting unit 53 being connected respectively provided with integrating instrument 52 and with integrating instrument 52 of described device housing 51,
Processes temperature signal converting unit 54 and differential pressure signal processing converting unit 55, the flow signal handle the another of converting unit 53
One end is connected with data on flows transmission line 22, the other end and the temperature data transmission line of the processes temperature signal converting unit 54
32 connections, one end of the differential pressure signal processing converting unit 55 is connected with differential pressure pick-up 46, and described device housing 51 is just
Face is provided with the display 56 being connected with integrating instrument 52, and the side of described device housing 51 is provided with two couples of flow signal connectors, four
Individual temperature signal connector and two pairs of pressure port (not shown).Specifically, the flow signal processing converting unit 53 is used for
The medium time difference signal transmitted to flow data line 22 carries out 4mA~20mA of flow rate calculation processing and outputting standard
Signal, the processing converter of its flow signal processing converting unit 53 specifically from model FLUXUS F601, the temperature letter
Number processing converting unit 54 is used for the RTD change in resistance signal that is transmitted to temperature data transmission line 32 and handled, and changes
4mA~20mA signals for corresponding temperature value and outputting standard are calculated, its processes temperature signal converting unit 54 specifically selects type
Number processing converter for being WD-Pt100, differential pressure signal processing converting unit 55 is used to transmit differential pressure pick-up 46
Medium differential pressure data be digitized processing, and 4mA~20mA signals of outputting standard, its differential pressure signal processing converting unit
The 55 specific processing converters from model H802-600Pa, the integrating instrument 52 is used for the rate-of flow after processing, temperature
Degree and differential pressure data are calculated.
As specific embodiment, the integrating instrument 52 passes through the integrating instrument from model SB-2100C integrating instrument
The preset calculation formula in 52 inside, can be to the fluid Reynolds number of medium or fluid, logarithmic mean temperature difference (LMTD), cold and hot side heat flow, heat
The parameters such as balance error, overall heat-transfer coefficient and efficiency are calculated, and can carry out the parameter value calculated by display 56
Show to check.Where it is assumed that the rate-of flow in thermal medium inlet pipeline 11 is qvh, Jie in cold medium inlet ductwork 13
Mass flow amount is qvc, the medium temperature in thermal medium inlet pipeline 11 is th1, the medium temperature in thermal medium outlet pipeline 12 is
th2, the medium temperature in cold medium inlet ductwork 13 is tc1, the medium temperature in cold medium export pipeline 14 is tc2, thermal medium
Pressure drop in pipeline is Δ ph, the pressure drop in cold medium pipeline is Δ pc, before these basic datas of foregoing collection and detection
Pipeline (diameter d, material etc.), the medium species of selection, the heat exchanger structure parameter (plate of such as plate type heat exchanger of input equipment
Corrugated form, physical dimension, heat transfer area A etc.), cold medium flow velocity u can be calculated automatically by the integrating instrument 52c(m/
S), thermal medium flow velocity uh(m/s), cold and hot medium entrance temperature is than τ, efficiency ε, cold medium heat flow Φc(W), thermal medium heat flow
Φh(W), thermal balance error delta Φ (%), cold medium reynolds number Rec, thermal medium reynolds number Reh, logarithmic mean temperature difference (LMTD) Δ tm(℃)
With overall heat-transfer coefficient kexp(W/m2.k), specific calculation formula is as follows：
Cold medium flow velocityThermal medium flow velocityWherein Sc、ShSection of respectively cold and hot medium pipeline
Area, can be can be calculated by the pipe diameter d inputted；Cold and hot medium entrance temperature ratioEfficiencyCold medium heat flow Φc=qmccpc(tc2-tc1), thermal medium heat flow Φh=qmhcph(th1-th2), wherein
qmc、qmhThe mass flow of respectively cold and hot medium, by the volume flow q of mediumvIt is divided by with Media density ρ under Current Temperatures
Arrive；cpc、cphThe specific heat coefficient of respectively cold and hot medium；Thermal balance errorCold medium thunder
Promise numberThermal medium Reynolds numberWherein μ is medium coefficient of viscosity；Logarithmic mean temperature difference (LMTD)Wherein Δ t1、Δt2It is (t respectivelyh1-th2)、(tc2-tc1) the greater and smaller, total heat transfer
CoefficientAs a kind of embodiment, the calculation formula of efficiency is：EEI=kexp/Δpm 0.31, its
Middle Δ pm=(Δ ph+Δpc)/2。
Compared with prior art, the heat exchanger energy efficiency detection device that the utility model is provided, highly integrated flow detection
Device, temperature-detecting device, differential pressure measuring device and host data processing unit, have accomplished system integration integration, Ke Yishi
The collection of the basic datas such as existing temperature, differential pressure, flow, moreover it is possible to which fluid Reynolds is carried out according to preset calculation formula by integrating instrument
Number, logarithmic mean temperature difference (LMTD), cold and hot side heat flow, thermal balance error, the calculating and display of overall heat-transfer coefficient and efficiency, can be greatly square
Just industry spot is in the detection with heat exchanger energy efficiency parameter.Therefore, the detection device that the application is provided can be used for detection heat exchanger
Thermal property and drag characteristic, the quick height for judging heat exchanger energy efficiency value, infer the journey of heat exchanger heat transfer ability quality according to this
Whether degree, need to be overhauled or taken apart a basis for estimation of the maintenance work for removing internal dirt etc as heat exchanger.
Finally illustrate, above example is only unrestricted to illustrate the technical solution of the utility model, although ginseng
The utility model is described in detail according to preferred embodiment, it will be understood by those within the art that, can be to this
The technical scheme of utility model is modified or equivalent substitution, without departing from the objective and model of technical solutions of the utility model
Enclose, it all should cover among right of the present utility model.
Claims (10)
1. a kind of heat exchanger energy efficiency detection device, the heat exchanger (1) includes heat medium pipeline and cold medium pipeline, the heat is situated between
Matter pipeline includes the thermal medium inlet pipeline (11) and thermal medium outlet pipeline (12) that connection is set, and the cold medium pipeline includes
Connect the cold medium inlet ductwork (13) set and cold medium export pipeline (14), it is characterised in that the detection device includes
Flow detector (2), temperature-detecting device (3), differential pressure measuring device (4) and host data processing unit (5), the flow
Detection means (2) be suitable to the rate-of flow in thermal medium inlet pipeline (11) and cold medium inlet ductwork (13) is detected,
The temperature-detecting device (3) is suitable to thermal medium inlet pipeline (11), thermal medium outlet pipeline (12), cold medium inlet ductwork
(13) detected with the medium temperature in cold medium export pipeline (14), the differential pressure measuring device (4) is suitable to thermal medium
Between inlet ductwork (11) and thermal medium outlet pipeline (12), cold medium inlet ductwork (13) and cold medium export pipeline (14) it
Between medium differential pressure detected, the host data processing unit (5) and flow detector (2), temperature-detecting device
(3), differential pressure measuring device (4) is connected respectively, and suitable for being carried out to the rate-of flow of detection, medium temperature and medium differential pressure signal
Processing conversion and calculating display.
2. heat exchanger energy efficiency detection device according to claim 1, it is characterised in that flow detector (2) bag
Ultrasonic flow sensor (21) and data on flows transmission line (22) are included, the ultrasonic flow sensor (21) is separately positioned on
On thermal medium inlet pipeline (11) and cold medium inlet ductwork (13), one end of the data on flows transmission line (22) and ultrasonic wave
Flow sensor (21) is connected, and the other end is connected with host data processing unit (5).
3. heat exchanger energy efficiency detection device according to claim 2, it is characterised in that the ultrasonic flow sensor
(21) it is contact or external clamping ultrasonic flow sensor.
4. heat exchanger energy efficiency detection device according to claim 3, it is characterised in that the contact ultrasonic flow is passed
Sensor is arranged in the opening of pipeline by way of being bonded or welding, and the external clamping ultrasonic flow sensor passes through bandage
Be fixed on pipeline, and between tube wall face between scribble couplant.
5. heat exchanger energy efficiency detection device according to claim 1, it is characterised in that temperature-detecting device (3) bag
SMD temperature sensor (31) and temperature data transmission line (32) are included, the SMD temperature sensor (31) is separately positioned on
Thermal medium inlet pipeline (11), thermal medium outlet pipeline (12), cold medium inlet ductwork (13) and cold medium export pipeline (14)
On, one end of the temperature data transmission line (32) is connected with SMD temperature sensor (31), at the other end and host data
Manage device (5) connection.
6. heat exchanger energy efficiency detection device according to claim 5, it is characterised in that the SMD temperature sensor
(31) patch combination with setting radian is formed using platinum resistance thermometer sensor, temperature-sensing element and the bending of fine copper material to constitute.
7. heat exchanger energy efficiency detection device according to claim 5, it is characterised in that the thermal medium inlet pipeline
(11), the tube wall face of thermal medium outlet pipeline (12), cold medium inlet ductwork (13) and cold medium export pipeline (14) is circumferentially
It is evenly arranged four SMD temperature sensors (31).
8. heat exchanger energy efficiency detection device according to claim 1, it is characterised in that differential pressure measuring device (4) bag
The first connecting tube (41), switch valve (42), plastics conduction pipe (43), the second connecting tube (44), triple valve (45) and differential pressure is included to pass
Sensor (46), one end of first connecting tube (41) respectively with thermal medium inlet pipeline (11), thermal medium outlet pipeline (12),
Cold medium inlet ductwork (13) is connected with the medium in cold medium export pipeline (14), the other end of first connecting tube (41)
Connected by switch valve (42) with one end of plastics conduction pipe (43), the other end of the plastics conduction pipe (43) connects by second
Adapter (44) is connected with the pressure port in host data processing unit (5), and the triple valve (45) is located at the second connecting tube (44)
On, the differential pressure pick-up (46) is arranged at host data processing unit (5) inside and connected with pressure port.
9. heat exchanger energy efficiency detection device according to claim 1, it is characterised in that the host data processing unit
(5) include integrating instrument (52) is provided with device case (51), described device housing (51) and is connected respectively with integrating instrument (52)
Flow signal processing converting unit (53), processes temperature signal converting unit (54) and differential pressure signal processing converting unit (55),
The other end of the flow signal processing converting unit (53) is connected with data on flows transmission line (22), the processes temperature signal
The other end of converting unit (54) is connected with temperature data transmission line (32), and the one of the differential pressure signal processing converting unit (55)
End is connected with differential pressure pick-up (46), and the front of described device housing (51) is provided with the display being connected with integrating instrument (52)
(56), the side of described device housing (51) is provided with the pressure port for setting differential pressure pick-up (46).
10. heat exchanger energy efficiency detection device according to claim 9, it is characterised in that the integrating instrument (52) selects type
Number be SB-2100C integrating instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720113567.9U CN206531655U (en) | 2017-02-07 | 2017-02-07 | A kind of heat exchanger energy efficiency detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720113567.9U CN206531655U (en) | 2017-02-07 | 2017-02-07 | A kind of heat exchanger energy efficiency detection device |
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| CN206531655U true CN206531655U (en) | 2017-09-29 |
Family
ID=59916410
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| CN201720113567.9U Expired - Fee Related CN206531655U (en) | 2017-02-07 | 2017-02-07 | A kind of heat exchanger energy efficiency detection device |
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| CN (1) | CN206531655U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596164A (en) * | 2017-02-07 | 2017-04-26 | 重庆市计量质量检测研究院 | Heat exchanger energy efficiency online detection device |
| CN110261150A (en) * | 2019-06-04 | 2019-09-20 | 中国科学院合肥物质科学研究院 | A kind of test device of 300-4.5K warm area multi-state cryogenic heat exchanger |
| CN113418733A (en) * | 2021-06-23 | 2021-09-21 | 宁夏绿源实业有限公司 | Heat exchange efficiency detection method for heat exchanger |
-
2017
- 2017-02-07 CN CN201720113567.9U patent/CN206531655U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596164A (en) * | 2017-02-07 | 2017-04-26 | 重庆市计量质量检测研究院 | Heat exchanger energy efficiency online detection device |
| CN110261150A (en) * | 2019-06-04 | 2019-09-20 | 中国科学院合肥物质科学研究院 | A kind of test device of 300-4.5K warm area multi-state cryogenic heat exchanger |
| CN113418733A (en) * | 2021-06-23 | 2021-09-21 | 宁夏绿源实业有限公司 | Heat exchange efficiency detection method for heat exchanger |
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