CN106247691A - Heat circulation unit - Google Patents

Abstract

The invention discloses heat circulation unit, including vaporizer, condenser, have heat exchange import, heat exchange outlet, take hot import, take the heat converter of heat outlet, described heat exchange import and heat exchange outlet is connected, and takes hot import and is connected with taking heat and exporting；The heat exchange import of described heat converter is provided as the heat source medium entrance that used heat is drained, heat exchange outlet and the evaporation inlet communication of described vaporizer；The hot import that takes of heat converter enters for taking thermal medium, takes the condensation inlet communication of heat outlet and described condenser；The media outlet of described vaporizer is used heat outlet, and the media outlet of condenser is heat supply mouth.The present invention can be circulated utilization to the heat energy in waste water, and can provide the hot water of equilibrium temperature, substantially increases heat exchange efficiency and the Energy Efficiency Ratio of heating simultaneously.

Description

Heat circulation unit

Technical field

The present invention relates to heat energy technology field, be specifically related to heat circulation unit.

Background technology

In city domestic sewage, industrial wastewater, such as shower waste, industry cooling waste water, these waste water also have certain Temperature, containing certain heat, is just gone out as direct discharging of waste water, the heat wasted in waste water in vain, it is impossible to close Reason utilizes, and causes thermal waste；It addition, containing impurity, pollutant in waste water, if being directly emitted the meeting environment shape to surrounding Become to pollute, the life health of impact colony around.If the heat energy in sewage, waste water is utilized, just can solve the problem that in water The problem of thermal waste, economizes on resources, it is also possible to for the problem solving environmental pollution.

Summary of the invention

For solving the problems referred to above, it is desirable to provide heat circulation unit.

The purpose of the present invention realizes by the following technical solutions:

Heat circulation unit, including vaporizer, condenser, has heat exchange import, heat exchange outlet, takes hot import, takes heat and go out The heat converter of mouth, described heat exchange import is connected with heat exchange outlet, takes hot import and is connected with taking heat and exporting；Described heat energy The heat exchange import of transducer is provided as the heat source medium entrance that used heat is drained, heat exchange outlet and the evaporation import of described vaporizer Connection；The hot import that takes of heat converter enters for taking thermal medium, takes the condensation inlet communication of heat outlet and described condenser； The media outlet of described vaporizer is used heat outlet, and the media outlet of condenser is heat supply mouth.

The operation principle of the present invention is: vaporizer is drawn into the heat of wherein heat source medium, makes the biography within vaporizer Thermal medium flashes to the steam of heat-transfer working medium, and steam is through the compression of the compressor within vaporizer, and its temperature and pressure is all gone up Rising the steam becoming high temperature, high pressure, high temperature, the steam of high pressure are condensed into liquid through condenser again, discharge heat, release The heat gone out is obtained by the thermal medium that takes in condenser, and the temperature so taking thermal medium raises, and discharges the liquid after heat Body, in decompression Returning evaporimeter, carries out circulation next time.

The invention have the benefit that and the heat energy in waste water can be circulated utilization, and equilibrium temperature can be provided Hot water, substantially increase heat exchange efficiency and the Energy Efficiency Ratio of heating simultaneously, efficiently solve above-mentioned technical problem.

Accompanying drawing explanation

The invention will be further described to utilize accompanying drawing, but the application scenarios in accompanying drawing does not constitute any limit to the present invention System, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain according to the following drawings Other accompanying drawing.

Fig. 1 is the structure connection diagram of the present invention；

Fig. 2 is the structural representation of life appraisal device of the present invention.

Reference:

Vaporizer 1, evaporation import 11, used heat outlet 12, condenser 2, condensation import 21, heat supply mouth 22, heat energy Transducer 3, heat exchange import 31, heat exchange outlet 32, take hot import 33, take heat outlet 34, reservoir 4, life appraisal device 5, data Preparation module 51, durability analysis prediction module 52.

Detailed description of the invention

In conjunction with following application scenarios, the invention will be further described.

Application scenarios 1

See Fig. 1, Fig. 2, the heat circulation unit of an embodiment of this application scene, including vaporizer 1, condenser 2, There is heat exchange import 31, heat exchange outlet 32, take hot import 33, take the heat converter 3 of heat outlet 34, described heat exchange import 31 with Heat exchange outlet 32 is connected, and takes hot import 33 and takes heat outlet 34 and be connected；The heat exchange import 31 of described heat converter 3 is made for The heat source medium drained for used heat enters, and heat exchange outlet 32 connects with the evaporation import 11 of described vaporizer 1；Heat converter The hot import 33 that takes of 3 enters for taking thermal medium, takes heat outlet 34 and connects with the condensation import 21 of described condenser 2；Described steaming The media outlet sending out device 1 is used heat outlet 12, and the media outlet of condenser 2 is heat supply mouth 22.

Preferably, the heat outlet 34 that takes of described heat converter 3 is discharged by the used heat of bypass line with described condenser 2 Mouth 12 connection.

The operation principle of the present invention is: vaporizer 1 is drawn into the heat of wherein heat source medium, makes within vaporizer 1 Heat transfer medium flashes to the steam of heat-transfer working medium, and steam is through the compression of the compressor within vaporizer 1, and its temperature and pressure is equal Rising the steam becoming high temperature, high pressure, high temperature, the steam of high pressure are condensed into liquid again when condenser 2, discharge heat, The heat discharged is obtained by the thermal medium that takes in condenser 2, and the temperature so taking thermal medium raises, and after discharging heat Liquid through decompression Returning evaporimeter 1 in, carry out circulation next time.

The above embodiment of the present invention can be circulated utilization to the heat energy in waste water, and can provide the heat of equilibrium temperature Water, substantially increases heat exchange efficiency and the Energy Efficiency Ratio of heating simultaneously, efficiently solves above-mentioned technical problem.

Preferably, the heat exchange import 31 of described heat converter 3 is provided with and enters by the heat source medium drained as used heat The reservoir 4 that row is collected.

This preferred embodiment arranges reservoir 4, and the waste water being beneficial to have discharge temperature carries out centralized collection.

Preferably, described heat circulation unit also includes that life appraisal device 5, described life appraisal device 5 include that data prepare Module 51 and durability analysis prediction module 52, described data preparation module 51 is for determining the actual measurement allusion quotation of heat circulation unit body The crack position of each actual crack, size on type loading spectrum, heat circulation unit body, and various crackles are carried out geometry simplification Classification；Described durability analysis prediction module 52, for the material of described heat circulation unit body is carried out fatigue test, obtains Described material corresponds to the fatigue crack growth rate curve of various crackles, and then to described actual measurement loads typical spectrum, each reality The fatigue crack growth rate curve of the crack position of crackle, size and various crackle carries out Crack growth analysis, and it is right to determine The surplus of corresponding crackle should be determined further according to described crack propagation life period in the crack propagation life period of various crackles The estimated value of remaining fatigue life, finally determines the estimated value of the remanent fatigue life of heat circulation unit body.

This preferred embodiment arranges life appraisal device, and constructs the structural framing of life appraisal device 5, can supervise in real time The health performance of calorimetric energy Cycle Unit, increases the safety of heat circulation unit running.

Preferably, define corresponding to crackle i=1,2 ... the estimated value collection of the remanent fatigue life of m is { P₁,P₂,…, P_i, the estimated value P of heat circulation unit body remanent fatigue life_ZIt is then:

P_Z=min_{I=1,2 ... m}{P₁,P₂,…,P_i}。

This preferred embodiment determines remanent fatigue life and the heat circulation unit body of heat circulation unit body Relation between the remanent fatigue life of each actual crack, uses the fatigue life of minimum actual crack as heat circulation machine The remanent fatigue life of group body, meets Law of Barrel, and accuracy is high.

Preferably, the described material to described heat circulation unit body carries out fatigue test, obtains described material corresponding In the fatigue crack growth rate curve of various crackles, including:

1) stress intensive factor range of various crackle is calculated, it is considered to the plastically deforming area of crackle sharp-crested point can tired to material Labor fracture has conclusive impact, crackle sharp-crested plastic zone is equivalent to a homogenizing containing phase transition strain and is mingled with, definition Stress intensive factor range Δ K_pcComputing formula be:

${\mathrm{\ΔK}}_{pc}=\left\{\begin{array}{cc}{K}_{pc}^{\max }-K_{yc}-{\mathrm{\ΔK}}_{sc},& R\≤0\\ K_{pc}^{\max }-K_{pc}^{\min },& R>0\end{array}\right.$

In formula

$\begin{array}{c}{\mathrm{\ΔK}}_{sc}=\frac{1}{2\sqrt{2\mathrm{\π}}}{\∫}_A{r}^{-3/2}\[\frac{K_{yc}}{\sqrt{2\mathrm{\π}r}}(3{\sin }^2\mathrm{\α}\cos \mathrm{\α}+2\cos \frac{\mathrm{\α}}{2}\cos \frac{3\mathrm{\α}}{2})\\ +3({\mathrm{\σ}}_{11}-{\mathrm{\σ}}_{22})\sin \mathrm{\α}\sin \frac{5\mathrm{\α}}{2}-6{\mathrm{\σ}}_{12}\sin \mathrm{\α}\cos \frac{5\mathrm{\α}}{2}-({\mathrm{\σ}}_{11}+{\mathrm{\σ}}_{22})\cos \frac{3\mathrm{\α}}{2}\]dA\end{array}$

Wherein,For in fatigue and cyclic load by the calculated stress intensity factor through plastic correcting of maximum load Value,For in fatigue and cyclic load by the calculated stress intensity factor value through plastic correcting of minimum load, K_ycFor far Stress intensity factor under field action, crackle LOAD FOR when opening completely obtains, Δ K_scRepresent crackle sharp-crested plastic zone The stress intensity factor increment caused, A is the area of the plastic zone around crackle sharp-crested, and it includes being produced in crack propagation process Raw plastic deformation tail district, σ₁₁、σ₁₂、σ₂₂For the stress in crackle sharp-crested plastic zone, by crackle sharp-crested plastic zone stress field Finite element method (fem) analysis obtain, R is the ratio of tensile load and compressive load；

2) fatigue crack growth rate curve of various crackle is built, based on Paris formula, it is considered to temperature is to fatigue Crackle expands the impact of speed, and the modified computing formulae defining described fatigue crack growth rate is:

T<0℃OR T>T_maxTime,

$\frac{da}{dN}=C{({\mathrm{\&Delta;K}}_{pc}-{\mathrm{\&Delta;K}}_T)}^M$

0℃≤T≤T_maxTime,

$\frac{da}{dN}=C{\left({\mathrm{\&Delta;K}}_{pc}\right)}^M$

In formula, T is test temperature, T_maxFor the maximum temperature set, T_maxSpan be [35 DEG C, 40 DEG C], a is for splitting Stricture of vagina extension length, N is cycle-index, C and M is material constant, Δ K_TFor cracks can spread performance curved surface at the improper temperature of matching The improper temperature fracture threshold value that post analysis obtains, embodies the temperature impact on spreading rate, and Δ K_TSpan [0, Δ K need to be met_pc)。

This preferred embodiment defines stress intensive factor range Δ K_pcComputing formula, and consider moulding of crackle sharp-crested point Property deformed area the fatigue fracture of material can be had a conclusive impact, and crackle sharp-crested plastic zone is equivalent to one containing phase The homogenizing that allergic effect becomes is mingled with, thus the stress intensive factor range Δ K defined_pcA rational mechanical parameter can be work perfectly well as Analyze the impact of crackle sharp-crested plastic zone counter stress intensity factor with carrying out quantification；Based on Paris formula, it is contemplated that temperature Impact on fatigue crack expansion speed, and define the modified computing formulae of fatigue crack growth rate, improve calculating Precision, and simple and practical.

Preferably, the computing formula of described crack propagation life period N is:

$N={\&Integral;}_{a_0}^{a_c}\frac{1}{C{({\mathrm{\&Delta;K}}_{pc}-{\mathrm{\&Delta;K}}_T)}^M}$

This preferred embodiment determines the computing formula of crack propagation life period N, improves the speed of biometry.

The maximum temperature T of this application scene above-described embodiment_maxIt is set as 35 DEG C, the fatigue to heat circulation unit body The precision of biometry improves 15% relatively.

Application scenarios 2

See Fig. 1, Fig. 2, the heat circulation unit of an embodiment of this application scene, including vaporizer 1, condenser 2, There is heat exchange import 31, heat exchange outlet 32, take hot import 33, take the heat converter 3 of heat outlet 34, described heat exchange import 31 with Heat exchange outlet 32 is connected, and takes hot import 33 and takes heat outlet 34 and be connected；The heat exchange import 31 of described heat converter 3 is made for The heat source medium drained for used heat enters, and heat exchange outlet 32 connects with the evaporation import 11 of described vaporizer 1；Heat converter The hot import 33 that takes of 3 enters for taking thermal medium, takes heat outlet 34 and connects with the condensation import 21 of described condenser 2；Described steaming The media outlet sending out device 1 is used heat outlet 12, and the media outlet of condenser 2 is heat supply mouth 22.

Preferably, the heat outlet 34 that takes of described heat converter 3 is discharged by the used heat of bypass line with described condenser 2 Mouth 12 connection.

The operation principle of the present invention is: vaporizer 1 is drawn into the heat of wherein heat source medium, makes within vaporizer 1 Heat transfer medium flashes to the steam of heat-transfer working medium, and steam is through the compression of the compressor within vaporizer 1, and its temperature and pressure is equal Rising the steam becoming high temperature, high pressure, high temperature, the steam of high pressure are condensed into liquid again when condenser 2, discharge heat, The heat discharged is obtained by the thermal medium that takes in condenser 2, and the temperature so taking thermal medium raises, and after discharging heat Liquid through decompression Returning evaporimeter 1 in, carry out circulation next time.

The above embodiment of the present invention can be circulated utilization to the heat energy in waste water, and can provide the heat of equilibrium temperature Water, substantially increases heat exchange efficiency and the Energy Efficiency Ratio of heating simultaneously, efficiently solves above-mentioned technical problem.

Preferably, the heat exchange import 31 of described heat converter 3 is provided with and enters by the heat source medium drained as used heat The reservoir 4 that row is collected.

This preferred embodiment arranges reservoir 4, and the waste water being beneficial to have discharge temperature carries out centralized collection.

Preferably, described heat circulation unit also includes that life appraisal device 5, described life appraisal device 5 include that data prepare Module 51 and durability analysis prediction module 52, described data preparation module 51 is for determining the actual measurement allusion quotation of heat circulation unit body The crack position of each actual crack, size on type loading spectrum, heat circulation unit body, and various crackles are carried out geometry simplification Classification；Described durability analysis prediction module 52, for the material of described heat circulation unit body is carried out fatigue test, obtains Described material corresponds to the fatigue crack growth rate curve of various crackles, and then to described actual measurement loads typical spectrum, each reality The fatigue crack growth rate curve of the crack position of crackle, size and various crackle carries out Crack growth analysis, and it is right to determine The surplus of corresponding crackle should be determined further according to described crack propagation life period in the crack propagation life period of various crackles The estimated value of remaining fatigue life, finally determines the estimated value of the remanent fatigue life of heat circulation unit body.

This preferred embodiment arranges life appraisal device, and constructs the structural framing of life appraisal device 5, can supervise in real time The health performance of calorimetric energy Cycle Unit, increases the safety of heat circulation unit running.

Preferably, define corresponding to crackle i=1,2 ... the estimated value collection of the remanent fatigue life of m is { P₁,P₂,…, P_i, the estimated value P of heat circulation unit body remanent fatigue life_ZIt is then:

P_Z=min_{I=1,2 ... m}{P₁,P₂,…,P_i}。

This preferred embodiment determines remanent fatigue life and the heat circulation unit body of heat circulation unit body Relation between the remanent fatigue life of each actual crack, uses the fatigue life of minimum actual crack as heat circulation machine The remanent fatigue life of group body, meets Law of Barrel, and accuracy is high.

Preferably, the described material to described heat circulation unit body carries out fatigue test, obtains described material corresponding In the fatigue crack growth rate curve of various crackles, including:

1) stress intensive factor range of various crackle is calculated, it is considered to the plastically deforming area of crackle sharp-crested point can tired to material Labor fracture has conclusive impact, crackle sharp-crested plastic zone is equivalent to a homogenizing containing phase transition strain and is mingled with, definition Stress intensive factor range Δ K_pcComputing formula be:

${\mathrm{\&Delta;K}}_{pc}=\left\{\begin{array}{cc}{K}_{pc}^{\max }-K_{yc}-{\mathrm{\&Delta;K}}_{sc},& R\&le;0\\ K_{pc}^{\max }-K_{pc}^{\min },& R>0\end{array}\right.$

In formula

$\begin{array}{c}{\mathrm{\&Delta;K}}_{sc}=\frac{1}{2\sqrt{2\mathrm{\&pi;}}}{\&Integral;}_A{r}^{-3/2}\&lsqb;\frac{K_{yc}}{\sqrt{2\mathrm{\&pi;}r}}(3{\sin }^2\mathrm{\&alpha;}\cos \mathrm{\&alpha;}+2\cos \frac{\mathrm{\&alpha;}}{2}\cos \frac{3\mathrm{\&alpha;}}{2})\\ +3({\mathrm{\&sigma;}}_{11}-{\mathrm{\&sigma;}}_{22})\sin \mathrm{\&alpha;}\sin \frac{5\mathrm{\&alpha;}}{2}-6{\mathrm{\&sigma;}}_{12}\sin \mathrm{\&alpha;}\cos \frac{5\mathrm{\&alpha;}}{2}-({\mathrm{\&sigma;}}_{11}+{\mathrm{\&sigma;}}_{22})\cos \frac{3\mathrm{\&alpha;}}{2}\&rsqb;dA\end{array}$

Wherein,For in fatigue and cyclic load by the calculated stress intensity factor through plastic correcting of maximum load Value,For in fatigue and cyclic load by the calculated stress intensity factor value through plastic correcting of minimum load, K_ycFor far Stress intensity factor under field action, crackle LOAD FOR when opening completely obtains, Δ K_scRepresent crackle sharp-crested plastic zone The stress intensity factor increment caused, A is the area of the plastic zone around crackle sharp-crested, and it includes being produced in crack propagation process Raw plastic deformation tail district, σ₁₁、σ₁₂、σ₂₂For the stress in crackle sharp-crested plastic zone, by crackle sharp-crested plastic zone stress field Finite element method (fem) analysis obtain, R is the ratio of tensile load and compressive load；

2) fatigue crack growth rate curve of various crackle is built, based on Paris formula, it is considered to temperature is to fatigue Crackle expands the impact of speed, and the modified computing formulae defining described fatigue crack growth rate is:

T<0℃OR T>T_maxTime,

$\frac{da}{dN}=C{({\mathrm{\&Delta;K}}_{pc}-{\mathrm{\&Delta;K}}_T)}^M$

0℃≤T≤T_maxTime,

$\frac{da}{dN}=C{\left({\mathrm{\&Delta;K}}_{pc}\right)}^M$

In formula, T is test temperature, T_maxFor the maximum temperature set, T_maxSpan be [35 DEG C, 40 DEG C], a is for splitting Stricture of vagina extension length, N is cycle-index, C and M is material constant, Δ K_TFor cracks can spread performance curved surface at the improper temperature of matching The improper temperature fracture threshold value that post analysis obtains, embodies the temperature impact on spreading rate, and Δ K_TSpan [0, Δ K need to be met_pc)。

This preferred embodiment defines stress intensive factor range Δ K_pcComputing formula, and consider moulding of crackle sharp-crested point Property deformed area the fatigue fracture of material can be had a conclusive impact, and crackle sharp-crested plastic zone is equivalent to one containing phase The homogenizing that allergic effect becomes is mingled with, thus the stress intensive factor range Δ K defined_pcA rational mechanical parameter can be work perfectly well as Analyze the impact of crackle sharp-crested plastic zone counter stress intensity factor with carrying out quantification；Based on Paris formula, it is contemplated that temperature Impact on fatigue crack expansion speed, and define the modified computing formulae of fatigue crack growth rate, improve calculating Precision, and simple and practical.

Preferably, the computing formula of described crack propagation life period N is:

$N={\&Integral;}_{a_0}^{a_c}\frac{1}{C{({\mathrm{\&Delta;K}}_{pc}-{\mathrm{\&Delta;K}}_T)}^M}$

This preferred embodiment determines the computing formula of crack propagation life period N, improves the speed of biometry.

The maximum temperature T of this application scene above-described embodiment_maxIt is set as 36 DEG C, the fatigue to heat circulation unit body The precision of biometry improves 14% relatively.

Application scenarios 3

See Fig. 1, Fig. 2, the heat circulation unit of an embodiment of this application scene, including vaporizer 1, condenser 2, There is heat exchange import 31, heat exchange outlet 32, take hot import 33, take the heat converter 3 of heat outlet 34, described heat exchange import 31 with Heat exchange outlet 32 is connected, and takes hot import 33 and takes heat outlet 34 and be connected；The heat exchange import 31 of described heat converter 3 is made for The heat source medium drained for used heat enters, and heat exchange outlet 32 connects with the evaporation import 11 of described vaporizer 1；Heat converter The hot import 33 that takes of 3 enters for taking thermal medium, takes heat outlet 34 and connects with the condensation import 21 of described condenser 2；Described steaming The media outlet sending out device 1 is used heat outlet 12, and the media outlet of condenser 2 is heat supply mouth 22.

Preferably, the heat outlet 34 that takes of described heat converter 3 is discharged by the used heat of bypass line with described condenser 2 Mouth 12 connection.

The operation principle of the present invention is: vaporizer 1 is drawn into the heat of wherein heat source medium, makes within vaporizer 1 Heat transfer medium flashes to the steam of heat-transfer working medium, and steam is through the compression of the compressor within vaporizer 1, and its temperature and pressure is equal Rising the steam becoming high temperature, high pressure, high temperature, the steam of high pressure are condensed into liquid again when condenser 2, discharge heat, The heat discharged is obtained by the thermal medium that takes in condenser 2, and the temperature so taking thermal medium raises, and after discharging heat Liquid through decompression Returning evaporimeter 1 in, carry out circulation next time.

The above embodiment of the present invention can be circulated utilization to the heat energy in waste water, and can provide the heat of equilibrium temperature Water, substantially increases heat exchange efficiency and the Energy Efficiency Ratio of heating simultaneously, efficiently solves above-mentioned technical problem.

Preferably, the heat exchange import 31 of described heat converter 3 is provided with and enters by the heat source medium drained as used heat The reservoir 4 that row is collected.

This preferred embodiment arranges reservoir 4, and the waste water being beneficial to have discharge temperature carries out centralized collection.

Preferably, described heat circulation unit also includes that life appraisal device 5, described life appraisal device 5 include that data prepare Module 51 and durability analysis prediction module 52, described data preparation module 51 is for determining the actual measurement allusion quotation of heat circulation unit body The crack position of each actual crack, size on type loading spectrum, heat circulation unit body, and various crackles are carried out geometry simplification Classification；Described durability analysis prediction module 52, for the material of described heat circulation unit body is carried out fatigue test, obtains Described material corresponds to the fatigue crack growth rate curve of various crackles, and then to described actual measurement loads typical spectrum, each reality The fatigue crack growth rate curve of the crack position of crackle, size and various crackle carries out Crack growth analysis, and it is right to determine The surplus of corresponding crackle should be determined further according to described crack propagation life period in the crack propagation life period of various crackles The estimated value of remaining fatigue life, finally determines the estimated value of the remanent fatigue life of heat circulation unit body.

This preferred embodiment arranges life appraisal device, and constructs the structural framing of life appraisal device 5, can supervise in real time The health performance of calorimetric energy Cycle Unit, increases the safety of heat circulation unit running.

Preferably, define corresponding to crackle i=1,2 ... the estimated value collection of the remanent fatigue life of m is { P₁,P₂,…, P_i, the estimated value P of heat circulation unit body remanent fatigue life_ZIt is then:

P_Z=min_{I=1,2 ... m}{P₁,P₂,…,P_i}。

This preferred embodiment determines remanent fatigue life and the heat circulation unit body of heat circulation unit body Relation between the remanent fatigue life of each actual crack, uses the fatigue life of minimum actual crack as heat circulation machine The remanent fatigue life of group body, meets Law of Barrel, and accuracy is high.

Preferably, the described material to described heat circulation unit body carries out fatigue test, obtains described material corresponding In the fatigue crack growth rate curve of various crackles, including:

1) stress intensive factor range of various crackle is calculated, it is considered to the plastically deforming area of crackle sharp-crested point can tired to material Labor fracture has conclusive impact, crackle sharp-crested plastic zone is equivalent to a homogenizing containing phase transition strain and is mingled with, definition Stress intensive factor range Δ K_pcComputing formula be:

${\mathrm{\&Delta;K}}_{pc}=\left\{\begin{array}{cc}{K}_{pc}^{\max }-K_{yc}-{\mathrm{\&Delta;K}}_{sc},& R\&le;0\\ K_{pc}^{\max }-K_{pc}^{\min },& R>0\end{array}\right.$

In formula

$\begin{array}{c}{\mathrm{\&Delta;K}}_{sc}=\frac{1}{2\sqrt{2\mathrm{\&pi;}}}{\&Integral;}_A{r}^{-3/2}\&lsqb;\frac{K_{yc}}{\sqrt{2\mathrm{\&pi;}r}}(3{\sin }^2\mathrm{\&alpha;}\cos \mathrm{\&alpha;}+2\cos \frac{\mathrm{\&alpha;}}{2}\cos \frac{3\mathrm{\&alpha;}}{2})\\ +3({\mathrm{\&sigma;}}_{11}-{\mathrm{\&sigma;}}_{22})\sin \mathrm{\&alpha;}\sin \frac{5\mathrm{\&alpha;}}{2}-6{\mathrm{\&sigma;}}_{12}\sin \mathrm{\&alpha;}\cos \frac{5\mathrm{\&alpha;}}{2}-({\mathrm{\&sigma;}}_{11}+{\mathrm{\&sigma;}}_{22})\cos \frac{3\mathrm{\&alpha;}}{2}\&rsqb;dA\end{array}$

Wherein,For in fatigue and cyclic load by the calculated stress intensity through plastic correcting of maximum load because of Subvalue,For in fatigue and cyclic load by the calculated stress intensity factor value through plastic correcting of minimum load, K_ycFor Stress intensity factor under the effect of far field, crackle LOAD FOR when opening completely obtains, Δ K_scRepresent crackle sharp-crested plasticity The stress intensity factor increment that district causes, A is the area of the plastic zone around crackle sharp-crested, and it includes institute in crack propagation process The plastic deformation tail district produced, σ₁₁、σ₁₂、σ₂₂For the stress in crackle sharp-crested plastic zone, by crackle sharp-crested plastic zone stress The finite element method (fem) analysis of field obtains, and R is the ratio of tensile load and compressive load；

2) fatigue crack growth rate curve of various crackle is built, based on Paris formula, it is considered to temperature is to fatigue Crackle expands the impact of speed, and the modified computing formulae defining described fatigue crack growth rate is:

T<0℃OR T>T_maxTime,

$\frac{da}{dN}=C{({\mathrm{\&Delta;K}}_{pc}-{\mathrm{\&Delta;K}}_T)}^M$

0℃≤T≤T_maxTime,

$\frac{da}{dN}=C{\left({\mathrm{\&Delta;K}}_{pc}\right)}^M$

In formula, T is test temperature, T_msxFor the maximum temperature set, T_maxSpan be [35 DEG C, 40 DEG C], a is for splitting Stricture of vagina extension length, N is cycle-index, C and M is material constant, Δ K_TFor cracks can spread performance curved surface at the improper temperature of matching The improper temperature fracture threshold value that post analysis obtains, embodies the temperature impact on spreading rate, and Δ K_TSpan [0, Δ K need to be met_pc)。

This preferred embodiment defines stress intensive factor range Δ K_pcComputing formula, and consider moulding of crackle sharp-crested point Property deformed area the fatigue fracture of material can be had a conclusive impact, and crackle sharp-crested plastic zone is equivalent to one containing phase The homogenizing that allergic effect becomes is mingled with, thus the stress intensive factor range Δ K defined_pcA rational mechanical parameter can be work perfectly well as Analyze the impact of crackle sharp-crested plastic zone counter stress intensity factor with carrying out quantification；Based on Paris formula, it is contemplated that temperature Impact on fatigue crack expansion speed, and define the modified computing formulae of fatigue crack growth rate, improve calculating Precision, and simple and practical.

Preferably, the computing formula of described crack propagation life period N is:

$N={\&Integral;}_{a_0}^{a_c}\frac{1}{C{({\mathrm{\&Delta;K}}_{pc}-{\mathrm{\&Delta;K}}_T)}^M}$

This preferred embodiment determines the computing formula of crack propagation life period N, improves the speed of biometry.

The maximum temperature T of this application scene above-described embodiment_maxIt is set as 38 DEG C, the fatigue to heat circulation unit body The precision of biometry improves 12% relatively.

Application scenarios 4

See Fig. 1, Fig. 2, the heat circulation unit of an embodiment of this application scene, including vaporizer 1, condenser 2, There is heat exchange import 31, heat exchange outlet 32, take hot import 33, take the heat converter 3 of heat outlet 34, described heat exchange import 31 with Heat exchange outlet 32 is connected, and takes hot import 33 and takes heat outlet 34 and be connected；The heat exchange import 31 of described heat converter 3 is made for The heat source medium drained for used heat enters, and heat exchange outlet 32 connects with the evaporation import 11 of described vaporizer 1；Heat converter The hot import 33 that takes of 3 enters for taking thermal medium, takes heat outlet 34 and connects with the condensation import 21 of described condenser 2；Described steaming The media outlet sending out device 1 is used heat outlet 12, and the media outlet of condenser 2 is heat supply mouth 22.

Preferably, the heat outlet 34 that takes of described heat converter 3 is discharged by the used heat of bypass line with described condenser 2 Mouth 12 connection.

The operation principle of the present invention is: vaporizer 1 is drawn into the heat of wherein heat source medium, makes within vaporizer 1 Heat transfer medium flashes to the steam of heat-transfer working medium, and steam is through the compression of the compressor within vaporizer 1, and its temperature and pressure is equal Rising the steam becoming high temperature, high pressure, high temperature, the steam of high pressure are condensed into liquid again when condenser 2, discharge heat, The heat discharged is obtained by the thermal medium that takes in condenser 2, and the temperature so taking thermal medium raises, and after discharging heat Liquid through decompression Returning evaporimeter 1 in, carry out circulation next time.

The above embodiment of the present invention can be circulated utilization to the heat energy in waste water, and can provide the heat of equilibrium temperature Water, substantially increases heat exchange efficiency and the Energy Efficiency Ratio of heating simultaneously, efficiently solves above-mentioned technical problem.

Preferably, the heat exchange import 31 of described heat converter 3 is provided with and enters by the heat source medium drained as used heat The reservoir 4 that row is collected.

This preferred embodiment arranges reservoir 4, and the waste water being beneficial to have discharge temperature carries out centralized collection.

Preferably, described heat circulation unit also includes that life appraisal device 5, described life appraisal device 5 include that data prepare Module 51 and durability analysis prediction module 52, described data preparation module 51 is for determining the actual measurement allusion quotation of heat circulation unit body The crack position of each actual crack, size on type loading spectrum, heat circulation unit body, and various crackles are carried out geometry simplification Classification；Described durability analysis prediction module 52, for the material of described heat circulation unit body is carried out fatigue test, obtains Described material corresponds to the fatigue crack growth rate curve of various crackles, and then to described actual measurement loads typical spectrum, each reality The fatigue crack growth rate curve of the crack position of crackle, size and various crackle carries out Crack growth analysis, and it is right to determine The surplus of corresponding crackle should be determined further according to described crack propagation life period in the crack propagation life period of various crackles The estimated value of remaining fatigue life, finally determines the estimated value of the remanent fatigue life of heat circulation unit body.

This preferred embodiment arranges life appraisal device, and constructs the structural framing of life appraisal device 5, can supervise in real time The health performance of calorimetric energy Cycle Unit, increases the safety of heat circulation unit running.

Preferably, define corresponding to crackle i=1,2 ... the estimated value collection of the remanent fatigue life of m is { P₁,P₂,…, P_i, the estimated value P of heat circulation unit body remanent fatigue life_ZIt is then:

P_Z=min_{I=1,2 ... m}{P₁,P₂,…,P_i}。

This preferred embodiment determines remanent fatigue life and the heat circulation unit body of heat circulation unit body Relation between the remanent fatigue life of each actual crack, uses the fatigue life of minimum actual crack as heat circulation machine The remanent fatigue life of group body, meets Law of Barrel, and accuracy is high.

Preferably, the described material to described heat circulation unit body carries out fatigue test, obtains described material corresponding In the fatigue crack growth rate curve of various crackles, including:

1) stress intensive factor range of various crackle is calculated, it is considered to the plastically deforming area of crackle sharp-crested point can tired to material Labor fracture has conclusive impact, crackle sharp-crested plastic zone is equivalent to a homogenizing containing phase transition strain and is mingled with, definition Stress intensive factor range Δ K_pcComputing formula be:

${\mathrm{\&Delta;K}}_{pc}=\left\{\begin{array}{cc}{K}_{pc}^{\max }-K_{yc}-{\mathrm{\&Delta;K}}_{sc},& R\&le;0\\ K_{pc}^{\max }-K_{pc}^{\min },& R>0\end{array}\right.$

In formula

$\begin{array}{c}{\mathrm{\&Delta;K}}_{sc}=\frac{1}{2\sqrt{2\mathrm{\&pi;}}}{\&Integral;}_A{r}^{-3/2}\&lsqb;\frac{K_{yc}}{\sqrt{2\mathrm{\&pi;}r}}(3{\sin }^2\mathrm{\&alpha;}\cos \mathrm{\&alpha;}+2\cos \frac{\mathrm{\&alpha;}}{2}\cos \frac{3\mathrm{\&alpha;}}{2})\\ +3({\mathrm{\&sigma;}}_{11}-{\mathrm{\&sigma;}}_{22})\sin \mathrm{\&alpha;}\sin \frac{5\mathrm{\&alpha;}}{2}-6{\mathrm{\&sigma;}}_{12}\sin \mathrm{\&alpha;}\cos \frac{5\mathrm{\&alpha;}}{2}-({\mathrm{\&sigma;}}_{11}+{\mathrm{\&sigma;}}_{22})\cos \frac{3\mathrm{\&alpha;}}{2}\&rsqb;dA\end{array}$

Wherein,For in fatigue and cyclic load by the calculated stress intensity factor through plastic correcting of maximum load Value,For in fatigue and cyclic load by the calculated stress intensity factor value through plastic correcting of minimum load, K_ycFor far Stress intensity factor under field action, crackle LOAD FOR when opening completely obtains, Δ K_scRepresent crackle sharp-crested plastic zone The stress intensity factor increment caused, A is the area of the plastic zone around crackle sharp-crested, and it includes being produced in crack propagation process Raw plastic deformation tail district, σ₁₁、σ₁₂、σ₂₂For the stress in crackle sharp-crested plastic zone, by crackle sharp-crested plastic zone stress field Finite element method (fem) analysis obtain, R is the ratio of tensile load and compressive load；

2) fatigue crack growth rate curve of various crackle is built, based on Paris formula, it is considered to temperature is to fatigue Crackle expands the impact of speed, and the modified computing formulae defining described fatigue crack growth rate is:

T<0℃OR T>T_maxTime,

$\frac{da}{dN}=C{({\mathrm{\&Delta;K}}_{pc}-{\mathrm{\&Delta;K}}_T)}^M$

0℃≤T≤T_maxTime,

$\frac{da}{dN}=C{\left({\mathrm{\&Delta;K}}_{pc}\right)}^M$

In formula, T is test temperature, T_maxFor the maximum temperature set, T_maxSpan be [35 DEG C, 40 DEG C], a is for splitting Stricture of vagina extension length, N is cycle-index, C and M is material constant, Δ K_TFor cracks can spread performance curved surface at the improper temperature of matching The improper temperature fracture threshold value that post analysis obtains, embodies the temperature impact on spreading rate, and Δ K_TSpan [0, Δ K need to be met_pc)。

This preferred embodiment defines stress intensive factor range Δ K_pcComputing formula, and consider moulding of crackle sharp-crested point Property deformed area the fatigue fracture of material can be had a conclusive impact, and crackle sharp-crested plastic zone is equivalent to one containing phase The homogenizing that allergic effect becomes is mingled with, thus the stress intensive factor range Δ K defined_pcA rational mechanical parameter can be work perfectly well as Analyze the impact of crackle sharp-crested plastic zone counter stress intensity factor with carrying out quantification；Based on Paris formula, it is contemplated that temperature Impact on fatigue crack expansion speed, and define the modified computing formulae of fatigue crack growth rate, improve calculating Precision, and simple and practical.

Preferably, the computing formula of described crack propagation life period N is:

$N={\&Integral;}_{a_0}^{a_c}\frac{1}{C{({\mathrm{\&Delta;K}}_{pc}-{\mathrm{\&Delta;K}}_T)}^M}$

This preferred embodiment determines the computing formula of crack propagation life period N, improves the speed of biometry.

The maximum temperature T of this application scene above-described embodiment_maxIt is set as 39 DEG C, the fatigue to heat circulation unit body The precision of biometry improves 11% relatively.

Application scenarios 5

See Fig. 1, Fig. 2, the heat circulation unit of an embodiment of this application scene, including vaporizer 1, condenser 2, There is heat exchange import 31, heat exchange outlet 32, take hot import 33, take the heat converter 3 of heat outlet 34, described heat exchange import 31 with Heat exchange outlet 32 is connected, and takes hot import 33 and takes heat outlet 34 and be connected；The heat exchange import 31 of described heat converter 3 is made for The heat source medium drained for used heat enters, and heat exchange outlet 32 connects with the evaporation import 11 of described vaporizer 1；Heat converter The hot import 33 that takes of 3 enters for taking thermal medium, takes heat outlet 34 and connects with the condensation import 21 of described condenser 2；Described steaming The media outlet sending out device 1 is used heat outlet 12, and the media outlet of condenser 2 is heat supply mouth 22.

Preferably, the heat outlet 34 that takes of described heat converter 3 is discharged by the used heat of bypass line with described condenser 2 Mouth 12 connection.

The operation principle of the present invention is: vaporizer 1 is drawn into the heat of wherein heat source medium, makes within vaporizer 1 Heat transfer medium flashes to the steam of heat-transfer working medium, and steam is through the compression of the compressor within vaporizer 1, and its temperature and pressure is equal Rising the steam becoming high temperature, high pressure, high temperature, the steam of high pressure are condensed into liquid again when condenser 2, discharge heat, The heat discharged is obtained by the thermal medium that takes in condenser 2, and the temperature so taking thermal medium raises, and after discharging heat Liquid through decompression Returning evaporimeter 1 in, carry out circulation next time.

The above embodiment of the present invention can be circulated utilization to the heat energy in waste water, and can provide the heat of equilibrium temperature Water, substantially increases heat exchange efficiency and the Energy Efficiency Ratio of heating simultaneously, efficiently solves above-mentioned technical problem.

Preferably, the heat exchange import 31 of described heat converter 3 is provided with and enters by the heat source medium drained as used heat The reservoir 4 that row is collected.

This preferred embodiment arranges reservoir 4, and the waste water being beneficial to have discharge temperature carries out centralized collection.

Preferably, described heat circulation unit also includes that life appraisal device 5, described life appraisal device 5 include that data prepare Module 51 and durability analysis prediction module 52, described data preparation module 51 is for determining the actual measurement allusion quotation of heat circulation unit body The crack position of each actual crack, size on type loading spectrum, heat circulation unit body, and various crackles are carried out geometry simplification Classification；Described durability analysis prediction module 52, for the material of described heat circulation unit body is carried out fatigue test, obtains Described material corresponds to the fatigue crack growth rate curve of various crackles, and then to described actual measurement loads typical spectrum, each reality The fatigue crack growth rate curve of the crack position of crackle, size and various crackle carries out Crack growth analysis, and it is right to determine The surplus of corresponding crackle should be determined further according to described crack propagation life period in the crack propagation life period of various crackles The estimated value of remaining fatigue life, finally determines the estimated value of the remanent fatigue life of heat circulation unit body.

This preferred embodiment arranges life appraisal device, and constructs the structural framing of life appraisal device 5, can supervise in real time The health performance of calorimetric energy Cycle Unit, increases the safety of heat circulation unit running.

Preferably, define corresponding to crackle i=1,2 ... the estimated value collection of the remanent fatigue life of m is { P₁,P₂,…, P_i, the estimated value P of heat circulation unit body remanent fatigue life_ZIt is then:

P_Z=min_{I=1,2 ... m}{P₁,P₂,…,P_i}。

This preferred embodiment determines remanent fatigue life and the heat circulation unit body of heat circulation unit body Relation between the remanent fatigue life of each actual crack, uses the fatigue life of minimum actual crack as heat circulation machine The remanent fatigue life of group body, meets Law of Barrel, and accuracy is high.

Preferably, the described material to described heat circulation unit body carries out fatigue test, obtains described material corresponding In the fatigue crack growth rate curve of various crackles, including:

1) stress intensive factor range of various crackle is calculated, it is considered to the plastically deforming area of crackle sharp-crested point can tired to material Labor fracture has conclusive impact, crackle sharp-crested plastic zone is equivalent to a homogenizing containing phase transition strain and is mingled with, definition Stress intensive factor range Δ K_pcComputing formula be:

${\mathrm{\&Delta;K}}_{pc}=\left\{\begin{array}{cc}{K}_{pc}^{\max }-K_{yc}-{\mathrm{\&Delta;K}}_{sc},& R\&le;0\\ K_{pc}^{\max }-K_{pc}^{\min },& R>0\end{array}\right.$

In formula

$\begin{array}{c}{\mathrm{\&Delta;K}}_{sc}=\frac{1}{2\sqrt{2\mathrm{\&pi;}}}{\&Integral;}_A{r}^{-3/2}\&lsqb;\frac{K_{yc}}{\sqrt{2\mathrm{\&pi;}r}}(3{\sin }^2\mathrm{\&alpha;}\cos \mathrm{\&alpha;}+2\cos \frac{\mathrm{\&alpha;}}{2}\cos \frac{3\mathrm{\&alpha;}}{2})\\ +3({\mathrm{\&sigma;}}_{11}-{\mathrm{\&sigma;}}_{22})\sin \mathrm{\&alpha;}\sin \frac{5\mathrm{\&alpha;}}{2}-6{\mathrm{\&sigma;}}_{12}\sin \mathrm{\&alpha;}\cos \frac{5\mathrm{\&alpha;}}{2}-({\mathrm{\&sigma;}}_{11}+{\mathrm{\&sigma;}}_{22})\cos \frac{3\mathrm{\&alpha;}}{2}\&rsqb;dA\end{array}$

Wherein,For in fatigue and cyclic load by the calculated stress intensity factor through plastic correcting of maximum load Value,For in fatigue and cyclic load by the calculated stress intensity factor value through plastic correcting of minimum load, K_ycFor far Stress intensity factor under field action, crackle LOAD FOR when opening completely obtains, Δ K_scRepresent crackle sharp-crested plastic zone The stress intensity factor increment caused, A is the area of the plastic zone around crackle sharp-crested, and it includes being produced in crack propagation process Raw plastic deformation tail district, σ₁₁、σ₁₂、σ₂₂For the stress in crackle sharp-crested plastic zone, by crackle sharp-crested plastic zone stress field Finite element method (fem) analysis obtain, R is the ratio of tensile load and compressive load；

2) fatigue crack growth rate curve of various crackle is built, based on Paris formula, it is considered to temperature is to fatigue Crackle expands the impact of speed, and the modified computing formulae defining described fatigue crack growth rate is:

T<0℃OR T>T_maxTime,

$\frac{da}{dN}=C{({\mathrm{\&Delta;K}}_{pc}-{\mathrm{\&Delta;K}}_T)}^M$

0℃≤T≤T_maxTime,

$\frac{da}{dN}=C{\left({\mathrm{\&Delta;K}}_{pc}\right)}^M$

In formula, T is test temperature, T_maxFor the maximum temperature set, T_maxSpan be [35 DEG C, 40 DEG C], a is for splitting Stricture of vagina extension length, N is cycle-index, C and M is material constant, Δ K_TFor cracks can spread performance curved surface at the improper temperature of matching The improper temperature fracture threshold value that post analysis obtains, embodies the temperature impact on spreading rate, and Δ K_TSpan [0, Δ K need to be met_pc)。

This preferred embodiment defines stress intensive factor range Δ K_pcComputing formula, and consider moulding of crackle sharp-crested point Property deformed area the fatigue fracture of material can be had a conclusive impact, and crackle sharp-crested plastic zone is equivalent to one containing phase The homogenizing that allergic effect becomes is mingled with, thus the stress intensive factor range Δ K defined_pcA rational mechanical parameter can be work perfectly well as Analyze the impact of crackle sharp-crested plastic zone counter stress intensity factor with carrying out quantification；Based on Paris formula, it is contemplated that temperature Impact on fatigue crack expansion speed, and define the modified computing formulae of fatigue crack growth rate, improve calculating Precision, and simple and practical.

Preferably, the computing formula of described crack propagation life period N is:

$N={\&Integral;}_{a_0}^{a_c}\frac{1}{C{({\mathrm{\&Delta;K}}_{pc}-{\mathrm{\&Delta;K}}_T)}^M}$

This preferred embodiment determines the computing formula of crack propagation life period N, improves the speed of biometry.

The maximum temperature T of this application scene above-described embodiment_maxIt is set as 40 DEG C, the fatigue to heat circulation unit body The precision of biometry improves 10% relatively.

Last it should be noted that, use above scene is only in order to illustrate technical scheme, rather than to the present invention The restriction of protection domain, although having made to explain to the present invention with reference to preferred application scene, the ordinary skill people of this area Member should be appreciated that and can modify technical scheme or equivalent, without deviating from technical solution of the present invention Spirit and scope.

Claims (3)

1. heat circulation unit, is characterized in that, including vaporizer, condenser, have heat exchange import, heat exchange outlet, take hot import, Taking the heat converter of heat outlet, described heat exchange import is connected with heat exchange outlet, takes hot import and is connected with taking heat and exporting；Institute The heat exchange import stating heat converter is provided as the heat source medium entrance that used heat is drained, heat exchange outlet and the evaporation of described vaporizer Use inlet communication；The hot import that takes of heat converter enters for taking thermal medium, takes the heat outlet condensation with described condenser with entering Mouth connection；The media outlet of described vaporizer is used heat outlet, and the media outlet of condenser is heat supply mouth.

Heat circulation unit the most according to claim 1, is characterized in that, the heat that takes of described heat converter exports by one Bypass pipe connects with the used heat outlet of described condenser.

Heat circulation unit the most according to claim 2, is characterized in that, the heat exchange import of described heat converter is provided with To the reservoir being collected by the heat source medium drained as used heat.