CN103808625A - Heat exchanger cleanliness detection method - Google Patents
Heat exchanger cleanliness detection method Download PDFInfo
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- CN103808625A CN103808625A CN201410070949.9A CN201410070949A CN103808625A CN 103808625 A CN103808625 A CN 103808625A CN 201410070949 A CN201410070949 A CN 201410070949A CN 103808625 A CN103808625 A CN 103808625A
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Abstract
The invention discloses a heat exchanger cleanliness detection method, and relates to a cleanliness detection method for the inner surface of an internal heat exchange tube of a heat exchanger. The method comprises steps A to M, wherein solid impurities can be precisely filtered by using a filtering method from the step A to the step H, and organic oil impurities can be distilled by using a distillation method in the step I to the step M, so that the content of impurities inside the heat exchanger can be obtained. Compared with the prior art, the method can precisely detect the content of solid impurities and organic oil impurities resided after the production of the heat exchanger, and then whether the cleanliness of the heat exchanger after production meets the standard is confirmed, and whether the heat exchangers of the batch can be delivered after being cleaned or can be directly delivered can be judged.
Description
Technical field
The present invention is the method for detecting cleaning degree of heat-exchange tube inside surface in a kind of heat exchanger.
Background technology
Generally speaking, how many more remaining impurity and grease in the heat-exchange tube of heat exchanger after production completes, how many these residues can have influence on the work efficiency of heat exchanger cold-producing medium.For this reason before heat exchanger uses, must carry out cleanliness detection to the heat exchanger of same batch, judge that according to this whether the heat exchanger cleanliness of this batch are up to specification, can directly dispatch from the factory, if do not meet cleanliness requirement, just must be facing to all cleaning heat-exchangers of same batch.
Summary of the invention
The present invention is directed to deficiency of the prior art, a kind of heat exchanger method for detecting cleaning degree is provided, can detect accurately heat exchanger and produce rear remaining solid impurity and organic oil content impurity content, dispatch from the factory or can directly dispatch from the factory in order to determine after whether heat exchanger needs to clean.
In order to solve the problems of the technologies described above, the present invention is solved by following technical proposals: heat exchanger method for detecting cleaning degree, its feature with comprise following step: steps A): confirm that in heat exchanger, pipeline is effective path, then 15 ° of fixed placement tilt heat exchanger, and the entrance of described the above pipeline of heat exchanger and outlet are all upwards, use polyethylene pipe to be connected respectively ebullator and beaker at described entrance with in described outlet, between described ebullator and beaker, be also connected with described polyethylene pipe, described beaker connects the inflow side of described ebullator, described entrance connects described ebullator outflow side, connect rear confirmation and formed an effective path, step B): on described beaker, be provided with funnel, and there is aluminium foil to prevent that dust from entering beaker in the surface coverage of beaker, in described funnel, splash into continuously cleaning fluid, described cleaning fluid is at least than the many 250ml of the capacity in heat exchanger, drip off the ebullator described in rear startup, the wash cycles time, between 17min to 23min, is shaken described people's interchanger gently in cleaning process, step C): after cleaning, first close described ebullator, pull out again polyethylene pipe described between described ebullator and described entrance, then in described entrance, be filled with slowly nitrogen, cleaning fluid described in described heat exchanger is all blown out in described beaker, step D): use the cleaning fluid described in 300ml at least to clean described ebullator inside, scavenging period, between 7min to 13min, has cleaned and rear cleaning fluid described in this part has also all been poured in described beaker, step e): be not more than the filter paper that 5.0 μ m and material are teflon and dry at the temperature of 105 ℃ considering aperture, hole, then use tweezers that described filter paper is put on the electronic scales that precision is at least 0.1 ㎎ and is weighed, record the quality before described filter paper uses, step F): use described tweezers that described filter paper is put into filtration unit, filtration unit fixed placement has triangular flask, then cleaning fluid described in described beaker is slowly poured in filtration unit and through described filter paper and entered described triangular flask, after being finished down, clean described beaker with described cleaning fluid again, and the cleaning fluid described in this part is continued to be poured in filtration unit again, step G): with described tweezers, described filter paper is put in aluminium foil dish of the shallow end, then with described tweezers, described aluminium foil dish of the shallow end is put into baking oven and dry, bake out temperature is constant in 100 ℃ to 110 ℃, and drying time is 30min at least, step H): being dried the described tweezers of rear use, that described aluminium foil dish of the shallow end is put into exsiccator is cooling, tweezers after cooling completing described in use are put into described filter paper on described electronic scales and weigh, record the quality after described filter paper uses, the quality before using according to described filter paper draws the quality of impurity, step I): clean up described beaker, cleaned beaker described in rear handle and put into described baking oven and dry, bake out temperature is constant in 100 ℃ to 110 ℃, and drying time is 30min at least, moisture in described beaker must be dried totally completely, uses beaker tongs that described beaker is put on described exsiccator cooling after drying, and cooling rear use beaker tongs is got described beaker clamp on electronic scales and weighed, and records the initial mass of described beaker, step J): allow water-bath stove and Rotary Evaporators be used in conjunction with, test portion bottle on described Rotary Evaporators can be placed in described water-bath stove, allow described beaker connect described Rotary Evaporators, now described beaker serve as the receiving flask on described Rotary Evaporators and beaker and the described Rotary Evaporators stated with described foil sealing residence between space, then in water-bath stove, add water, and allow described water-bath stove communication loop water, then open again water-bath power supply, make bath temperature constant between 60 ℃ to 70 ℃, then in test portion bottle, pour cleaning fluid described in described triangular flask into again, the cleaning fluid of at every turn pouring into can not exceed the half of described test portion bottle volume, finally described test portion bottle is poured in water-bath stove, step K): regulate the rotational speed on described Rotary Evaporators, allow the rotating speed of described test portion bottle between turn/min of 25 turn/min to 35 start distillation, cleaning fluid in each described test portion bottle only when surplus 20ml to 25ml just by described triangular flask toward make-up solution in described test portion bottle, until described triangular flask cleaning liquid inside uses, when described cleaning fluid only remains 15ml in bottle when described test portion bottle distills for the last time, stop distillation, after having distilled, clean up described test portion bottle, step L): use described beaker tongs that described beaker is taken out from described Rotary Evaporators, then be put on the heating plate that is positioned at ventilation, start heating plate and set heating-up temperature between 100 ℃ to 110 ℃, until stop heating when solution in described beaker residue 2ml, then use described beaker tongs that described beaker is put into described drying baker, bake out temperature is between 100 ℃ to 110 ℃, drying time is 30min at least, and the beaker tongs of having dried described in rear use is put into described exsiccator cool to room temperature described beaker, step M): on the electronic scales described in described beaker being put into described beaker tongs, weigh, draw the final weight of described beaker, so just can draw according to the variation of quality before and after beaker the quality of foreign organic matter.
In technique scheme, preferred, the wash cycles time described in described step B is 20min.
In technique scheme, preferred, the scavenging period described in described step D is 10min.
In technique scheme, preferred, the aperture of considering hole described in described step e on filter paper can be 5.0 μ m, 4.5 μ m and 4.0 μ m.
In technique scheme, preferred, the bath temperature described in described step J is 65 ℃.
In technique scheme, preferred, on the Rotary Evaporators described in described step J, can also be provided with vacuum pump.
Impurity in heat exchanger is generally divided into two kinds of solid impurity and organic oil content impurity, and these two kinds of impurity all can reduce the heat exchanger service efficiency of cooling medium in use.So the impurity content in regulation heat exchanger must be under certain ratio, the content that typically allows unit area solid impurity is 11 ㎎/㎡, and organic oil content impurity content is 32 ㎎/㎡.In unit length heat exchanger, heat-exchange tube internal surface area formula is S=(W+2*h/cos (V/2)) * n/cos β, wherein W is bottom land wide (m), and h is tooth depth (m), V be addendum angle (°), β be helix angle (°), n is the number of teeth; Regard profile of tooth as subtriangular calculating time error and be not more than 5%.Be divided into two steps for the measurement of impurity in heat exchanger, first-selection is passed through steps A) to step H) measure the quality of solid impurity, then measure the quality of organic oil content impurity to step M by step I.The consumption of the cleaning fluid using must know all processes in the time measuring organic oil content impurity quality in, cannot distill because have the cleaning fluid of 15ml in the time of step K, while calculating final data, need to consider that the liquid of this part converts.After also needing to deduct the blank value of cleaning fluid after weighing results draws, just can extrapolate final organic oil content impurity quality.
Compared with prior art, the invention has the beneficial effects as follows: can detect accurately heat exchanger and produce rear remaining solid impurity and organic oil content impurity content, dispatch from the factory or can directly dispatch from the factory in order to determine after whether heat exchanger needs to clean.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail.
Embodiment 1, heat exchanger method for detecting cleaning degree, comprise following step: steps A): confirm that in heat exchanger, pipeline is effective path, then 15 ° of fixed placement tilt heat exchanger, and the entrance of described the above pipeline of heat exchanger and outlet are all upwards, use polyethylene pipe to be connected respectively ebullator and beaker at described entrance with in described outlet, between described ebullator and beaker, be also connected with described polyethylene pipe, described beaker connects the inflow side of described ebullator, described entrance connects described ebullator outflow side, connect rear confirmation and formed an effective path.Step B): on described beaker, be provided with funnel, and there is aluminium foil to prevent that dust from entering beaker in the surface coverage of beaker, in described funnel, splash into continuously cleaning fluid, described cleaning fluid is at least than the many 250ml of the capacity in heat exchanger, drip off the ebullator described in rear startup, the wash cycles time is 17min, shakes gently described people's interchanger in cleaning process.Step C): after cleaning, first close described ebullator, pull out again polyethylene pipe described between described ebullator and described entrance, then in described entrance, be filled with slowly nitrogen, cleaning fluid described in described heat exchanger is all blown out in described beaker.Step D): use the cleaning fluid described in 300ml at least to clean described ebullator inside, scavenging period is 7min, has cleaned rear cleaning fluid described in this part to be also all poured in described beaker.Step e): be that the filter paper that 5.0 μ m and material are teflon is dried at the temperature of 105 ℃ considering aperture, hole, then use tweezers that described filter paper is put on the electronic scales that precision is at least 0.1 ㎎ and is weighed, record the quality before described filter paper use.Step F): use described tweezers that described filter paper is put into filtration unit, filtration unit fixed placement has triangular flask, then cleaning fluid described in described beaker is slowly poured in filtration unit and through described filter paper and entered described triangular flask, after being finished down, clean described beaker with described cleaning fluid again, and the cleaning fluid described in this part is continued to be poured in filtration unit again.Step G): with described tweezers, described filter paper is put in aluminium foil dish of the shallow end, then with described tweezers, described aluminium foil dish of the shallow end is put into baking oven and dry, bake out temperature is constant is 100 ℃, and drying time is 30min at least.Step H): being dried the described tweezers of rear use, that described aluminium foil dish of the shallow end is put into exsiccator is cooling, tweezers after cooling completing described in use are put into described filter paper on described electronic scales and weigh, record the quality after described filter paper uses, the quality before using according to described filter paper draws the quality of impurity.Step I): clean up described beaker, cleaned beaker described in rear handle and put into described baking oven and dry, bake out temperature is constant is 100 ℃, and drying time is 30min at least; Moisture in described beaker must be dried totally completely, uses beaker tongs that described beaker is put on described exsiccator cooling after drying, and cooling rear use beaker tongs is got described beaker clamp on electronic scales and weighed, and records the initial mass of described beaker.Step J): allow water-bath stove and Rotary Evaporators be used in conjunction with, test portion bottle on described Rotary Evaporators can be placed in described water-bath stove, on described Rotary Evaporators, can also be provided with vacuum pump, allow described beaker connect described Rotary Evaporators, now described beaker serve as the receiving flask on described Rotary Evaporators and beaker and the described Rotary Evaporators stated with described foil sealing residence between space, then in water-bath stove, add water, and allow described water-bath stove communication loop water, then open again water-bath power supply, make bath temperature constant in 60 ℃, then in test portion bottle, pour cleaning fluid described in described triangular flask into again, the cleaning fluid of at every turn pouring into can not exceed the half of described test portion bottle volume, finally described test portion bottle is poured in water-bath stove.Step K): regulate the rotational speed on described Rotary Evaporators, under the rotating speed of turn 25/min of test portion bottle described in allowing, start distillation, cleaning fluid in each described test portion bottle only when surplus 20ml just by described triangular flask toward make-up solution in described test portion bottle, until described triangular flask cleaning liquid inside uses, when described cleaning fluid only remains 15ml in bottle when described test portion bottle distills for the last time, stop distillation, after having distilled, clean up described test portion bottle.Step L): use described beaker tongs that described beaker is taken out from described Rotary Evaporators, then be put on the heating plate that is positioned at ventilation, starting heating plate setting heating-up temperature is 100 ℃, until stop heating when solution in described beaker residue 2ml, then use described beaker tongs that described beaker is put into described drying baker, bake out temperature is 100 ℃, drying time is 30min at least, and the beaker tongs of having dried described in rear use is put into described exsiccator cool to room temperature described beaker.Step M): on the electronic scales described in described beaker being put into described beaker tongs, weigh, draw the final weight of described beaker, so just can draw according to the variation of quality before and after beaker the quality of foreign organic matter.
Embodiment 2, heat exchanger method for detecting cleaning degree, comprise following step: steps A): confirm that in heat exchanger, pipeline is effective path, then 15 ° of fixed placement tilt heat exchanger, and the entrance of described the above pipeline of heat exchanger and outlet are all upwards, use polyethylene pipe to be connected respectively ebullator and beaker at described entrance with in described outlet, between described ebullator and beaker, be also connected with described polyethylene pipe, described beaker connects the inflow side of described ebullator, described entrance connects described ebullator outflow side, connect rear confirmation and formed an effective path.Step B): on described beaker, be provided with funnel, and there is aluminium foil to prevent that dust from entering beaker in the surface coverage of beaker, in described funnel, splash into continuously cleaning fluid, described cleaning fluid is at least than the many 250ml of the capacity in heat exchanger, drip off the ebullator described in rear startup, the wash cycles time is 20min, shakes gently described people's interchanger in cleaning process.Step C): after cleaning, first close described ebullator, pull out again polyethylene pipe described between described ebullator and described entrance, then in described entrance, be filled with slowly nitrogen, cleaning fluid described in described heat exchanger is all blown out in described beaker.Step D): use the cleaning fluid described in 300ml at least to clean described ebullator inside, scavenging period is 10min, has cleaned rear cleaning fluid described in this part to be also all poured in described beaker.Step e): be that the filter paper that 4.5 μ m and material are teflon is dried at the temperature of 105 ℃ considering aperture, hole, then use tweezers that described filter paper is put on the electronic scales that precision is at least 0.1 ㎎ and is weighed, record the quality before described filter paper use.Step F): use described tweezers that described filter paper is put into filtration unit, filtration unit fixed placement has triangular flask, then cleaning fluid described in described beaker is slowly poured in filtration unit and through described filter paper and entered described triangular flask, after being finished down, clean described beaker with described cleaning fluid again, and the cleaning fluid described in this part is continued to be poured in filtration unit again.Step G): with described tweezers, described filter paper is put in aluminium foil dish of the shallow end, then with described tweezers, described aluminium foil dish of the shallow end is put into baking oven and dry, bake out temperature is constant in 105 ℃, and drying time is 30min at least.Step H): being dried the described tweezers of rear use, that described aluminium foil dish of the shallow end is put into exsiccator is cooling, tweezers after cooling completing described in use are put into described filter paper on described electronic scales and weigh, record the quality after described filter paper uses, the quality before using according to described filter paper draws the quality of impurity.Step I): clean up described beaker, cleaned beaker described in rear handle and put into described baking oven and dry, bake out temperature is constant in 105 ℃, and drying time is 30min at least; Moisture in described beaker must be dried totally completely, uses beaker tongs that described beaker is put on described exsiccator cooling after drying, and cooling rear use beaker tongs is got described beaker clamp on electronic scales and weighed, and records the initial mass of described beaker.Step J): allow water-bath stove and Rotary Evaporators be used in conjunction with, test portion bottle on described Rotary Evaporators can be placed in described water-bath stove, on described Rotary Evaporators, can also be provided with vacuum pump, allow described beaker connect described Rotary Evaporators, now described beaker serve as the receiving flask on described Rotary Evaporators and beaker and the described Rotary Evaporators stated with described foil sealing residence between space, then in water-bath stove, add water, and allow described water-bath stove communication loop water, then open again water-bath power supply, make bath temperature constant in 65 ℃, then in test portion bottle, pour cleaning fluid described in described triangular flask into again, the cleaning fluid of at every turn pouring into can not exceed the half of described test portion bottle volume, finally described test portion bottle is poured in water-bath stove.Step K): regulate the rotational speed on described Rotary Evaporators, allow the rotating speed of described turn 30/min of test portion bottle start distillation, cleaning fluid in each described test portion bottle only when surplus 25ml just by described triangular flask toward make-up solution in described test portion bottle, until described triangular flask cleaning liquid inside uses, when described cleaning fluid only remains 15ml in bottle when described test portion bottle distills for the last time, stop distillation, after having distilled, clean up described test portion bottle.Step L): use described beaker tongs that described beaker is taken out from described Rotary Evaporators, then be put on the heating plate that is positioned at ventilation, start heating plate and set heating-up temperature at 105 ℃, until stop heating when solution in described beaker residue 2ml, then use described beaker tongs that described beaker is put into described drying baker, bake out temperature is at 105 ℃, drying time is 30min at least, and the beaker tongs of having dried described in rear use is put into described exsiccator cool to room temperature described beaker.Step M): on the electronic scales described in described beaker being put into described beaker tongs, weigh, draw the final weight of described beaker, so just can draw according to the variation of quality before and after beaker the quality of foreign organic matter.
Embodiment 3, heat exchanger method for detecting cleaning degree, its feature with comprise following step: steps A): confirm that in heat exchanger, pipeline is effective path, then 15 ° of fixed placement tilt heat exchanger, and the entrance of described the above pipeline of heat exchanger and outlet are all upwards, use polyethylene pipe to be connected respectively ebullator and beaker at described entrance with in described outlet, between described ebullator and beaker, be also connected with described polyethylene pipe, described beaker connects the inflow side of described ebullator, described entrance connects described ebullator outflow side, connect rear confirmation and formed an effective path.Step B): on described beaker, be provided with funnel, and there is aluminium foil to prevent that dust from entering beaker in the surface coverage of beaker, in described funnel, splash into continuously cleaning fluid, described cleaning fluid is at least than the many 250ml of the capacity in heat exchanger, drip off the ebullator described in rear startup, the wash cycles time is 23min, shakes gently described people's interchanger in cleaning process.Step C): after cleaning, first close described ebullator, pull out again polyethylene pipe described between described ebullator and described entrance, then in described entrance, be filled with slowly nitrogen, cleaning fluid described in described heat exchanger is all blown out in described beaker.Step D): use the cleaning fluid described in 300ml at least to clean described ebullator inside, scavenging period is 13min, has cleaned rear cleaning fluid described in this part to be also all poured in described beaker.Step e): be that the filter paper that 4.0 μ m and material are teflon is dried at the temperature of 105 ℃ considering aperture, hole, then use tweezers that described filter paper is put on the electronic scales that precision is at least 0.1 ㎎ and is weighed, record the quality before described filter paper use.Step F): use described tweezers that described filter paper is put into filtration unit, filtration unit fixed placement has triangular flask, then cleaning fluid described in described beaker is slowly poured in filtration unit and through described filter paper and entered described triangular flask, after being finished down, clean described beaker with described cleaning fluid again, and the cleaning fluid described in this part is continued to be poured in filtration unit again.Step G): with described tweezers, described filter paper is put in aluminium foil dish of the shallow end, then with described tweezers, described aluminium foil dish of the shallow end is put into baking oven and dry, bake out temperature is constant in 110 ℃, and drying time is 30min at least.Step H): being dried the described tweezers of rear use, that described aluminium foil dish of the shallow end is put into exsiccator is cooling, tweezers after cooling completing described in use are put into described filter paper on described electronic scales and weigh, record the quality after described filter paper uses, the quality before using according to described filter paper draws the quality of impurity.Step I): clean up described beaker, cleaned beaker described in rear handle and put into described baking oven and dry, bake out temperature is constant in 110 ℃, and drying time is 30min at least; Moisture in described beaker must be dried totally completely, uses beaker tongs that described beaker is put on described exsiccator cooling after drying, and cooling rear use beaker tongs is got described beaker clamp on electronic scales and weighed, and records the initial mass of described beaker.Step J): allow water-bath stove and Rotary Evaporators be used in conjunction with, test portion bottle on described Rotary Evaporators can be placed in described water-bath stove, on described Rotary Evaporators, can also be provided with vacuum pump, allow described beaker connect described Rotary Evaporators, now described beaker serve as the receiving flask on described Rotary Evaporators and beaker and the described Rotary Evaporators stated with described foil sealing residence between space, then in water-bath stove, add water, and allow described water-bath stove communication loop water, then open again water-bath power supply, make bath temperature constant in 70 ℃, then in test portion bottle, pour cleaning fluid described in described triangular flask into again, the cleaning fluid of at every turn pouring into can not exceed the half of described test portion bottle volume, finally described test portion bottle is poured in water-bath stove.Step K): regulate the rotational speed on described Rotary Evaporators, allow the rotating speed of described turn 35/min of test portion bottle start distillation, cleaning fluid in each described test portion bottle only when surplus 25ml just by described triangular flask toward make-up solution in described test portion bottle, until described triangular flask cleaning liquid inside uses, when described cleaning fluid only remains 15ml in bottle when described test portion bottle distills for the last time, stop distillation, after having distilled, clean up described test portion bottle.Step L): use described beaker tongs that described beaker is taken out from described Rotary Evaporators, then be put on the heating plate that is positioned at ventilation, start heating plate and set heating-up temperature at 110 ℃, until stop heating when solution in described beaker residue 2ml, then use described beaker tongs that described beaker is put into described drying baker, bake out temperature is at 110 ℃, drying time is 30min at least, and the beaker tongs of having dried described in rear use is put into described exsiccator cool to room temperature described beaker.Step M): on the electronic scales described in described beaker being put into described beaker tongs, weigh, draw the final weight of described beaker, so just can draw according to the variation of quality before and after beaker the quality of foreign organic matter.
Steps A is the pipeline that cleans heat exchanger inside under the effect of ebullator with cleaning fluid to step H, uses polyethylene pipe to connect ebullator and beaker, and must firmly, can not there be any leakage junction.On beaker, in beaker, splash into cleaning fluid with funnel, cleaning fluid is a kind of powerful degreaser, also to meet environmental requirement simultaneously, can not produce harm to human body, must know before use the blank value of cleaning fluid and the boiling point of cleaning fluid, for in order to be effective, the boiling point of cleaning fluid is preferably in 60 ℃ of left and right.In order to guarantee that measuring accuracy need to cover with aluminium foil between beaker and funnel, prevent that dust from entering beaker, after dripping off, funnel can also on beaker, cover dish ware, and further dustproof.In the process of cleaning, need to shake gently heat exchanger, that can clean like this is more thorough.In cleaning, must record accurately the amount of the cleaning fluid of use.After clean end heat exchanger, also to clean ebullator, and these two kinds of cleaning fluids are all concentrated and are placed in beaker.Then adopt filtration method, allow the interior solid impurity of cleaning fluid stay on filter paper, all the other liquid are stored in triangular flask.Just can draw according to the filter paper successively variation of quality the quality of impurity with post-drying filter paper.Thereby distill out organic oil content impurity, on Rotary Evaporators, can also be provided with vacuum pump, can accelerate like this distillation speed to using Rotary Evaporators and water-bath stove to carry out distillation work to the residue cleaning fluid in triangular flask in step M at step I.These organic oil content materials leave in the beaker having cleaned, and by the beaker successively variation of quality, just can draw the quality of organic oil content impurity.Because all cleaning fluids all cannot be distilled successfully, the cleaning fluid that finally has 15ml is residual, so also need to know that accurate cleaning fluid use amount is in order to draw final organic oil content impurity quality, this numerical value is exactly final data after deducting the blank value of cleaning fluid.Just can draw the content of heat exchanger pipeline internal unit area solid impurity and organic oil content impurity by converting.Can detect accurately heat exchanger and produce rear remaining solid impurity and organic oil content impurity content, dispatch from the factory or can directly dispatch from the factory in order to determine after whether heat exchanger needs to clean.Can detect accurately heat exchanger by this method and produce rear remaining solid impurity and organic oil content impurity content, dispatch from the factory or can directly dispatch from the factory in order to determine after whether heat exchanger needs to clean.
Claims (6)
1. heat exchanger method for detecting cleaning degree, its feature comprises following step: steps A): confirm that in heat exchanger, pipeline is effective path, then 15 ° of fixed placement tilt heat exchanger, and the entrance of described the above pipeline of heat exchanger and outlet are all upwards, use polyethylene pipe to be connected respectively ebullator and beaker at described entrance with in described outlet, between described ebullator and beaker, be also connected with described polyethylene pipe, described beaker connects the inflow side of described ebullator, described entrance connects described ebullator outflow side, connect rear confirmation and formed an effective path, step B): on described beaker, be provided with funnel, and there is aluminium foil to prevent that dust from entering beaker in the surface coverage of beaker, in described funnel, splash into continuously cleaning fluid, described cleaning fluid is at least than the many 250ml of the capacity in heat exchanger, drip off the ebullator described in rear startup, the wash cycles time, between 17min to 23min, is shaken described people's interchanger gently in cleaning process, step C): after cleaning, first close described ebullator, pull out again polyethylene pipe described between described ebullator and described entrance, then in described entrance, be filled with slowly nitrogen, cleaning fluid described in described heat exchanger is all blown out in described beaker, step D): use the cleaning fluid described in 300ml at least to clean described ebullator inside, scavenging period, between 7min to 13min, has cleaned and rear cleaning fluid described in this part has also all been poured in described beaker, step e): be not more than the filter paper that 5.0 μ m and material are teflon and dry at the temperature of 105 ℃ considering aperture, hole, then use tweezers that described filter paper is put on the electronic scales that precision is at least 0.1 ㎎ and is weighed, record the quality before described filter paper uses, step F): use described tweezers that described filter paper is put into filtration unit, filtration unit fixed placement has triangular flask, then cleaning fluid described in described beaker is slowly poured in filtration unit and through described filter paper and entered described triangular flask, after being finished down, clean described beaker with described cleaning fluid again, and the cleaning fluid described in this part is continued to be poured in filtration unit again, step G): with described tweezers, described filter paper is put in aluminium foil dish of the shallow end, then with described tweezers, described aluminium foil dish of the shallow end is put into baking oven and dry, bake out temperature is constant in 100 ℃ to 110 ℃, and drying time is 30min at least, step H): being dried the described tweezers of rear use, that described aluminium foil dish of the shallow end is put into exsiccator is cooling, tweezers after cooling completing described in use are put into described filter paper on described electronic scales and weigh, record the quality after described filter paper uses, the quality before using according to described filter paper draws the quality of impurity, step I): clean up described beaker, cleaned beaker described in rear handle and put into described baking oven and dry, bake out temperature is constant in 100 ℃ to 110 ℃, and drying time is 30min at least, moisture in described beaker must be dried totally completely, uses beaker tongs that described beaker is put on described exsiccator cooling after drying, and cooling rear use beaker tongs is got described beaker clamp on electronic scales and weighed, and records the initial mass of described beaker, step J): allow water-bath stove and Rotary Evaporators be used in conjunction with, test portion bottle on described Rotary Evaporators can be placed in described water-bath stove, allow described beaker connect described Rotary Evaporators, now described beaker serve as the receiving flask on described Rotary Evaporators and beaker and the described Rotary Evaporators stated with described foil sealing residence between space, then in water-bath stove, add water, and allow described water-bath stove communication loop water, then open again water-bath power supply, make bath temperature constant between 60 ℃ to 70 ℃, then in test portion bottle, pour cleaning fluid described in described triangular flask into again, the cleaning fluid of at every turn pouring into can not exceed the half of described test portion bottle volume, finally described test portion bottle is poured in water-bath stove, step K): regulate the rotational speed on described Rotary Evaporators, allow the rotating speed of described test portion bottle between turn/min of 25 turn/min to 35 start distillation, cleaning fluid in each described test portion bottle only when surplus 20ml to 25ml just by described triangular flask toward make-up solution in described test portion bottle, until described triangular flask cleaning liquid inside uses, when described cleaning fluid only remains 15ml in bottle when described test portion bottle distills for the last time, stop distillation, after having distilled, clean up described test portion bottle, step L): use described beaker tongs that described beaker is taken out from described Rotary Evaporators, then be put on the heating plate that is positioned at ventilation, start heating plate and set heating-up temperature between 100 ℃ to 110 ℃, until stop heating when solution in described beaker residue 2ml, then use described beaker tongs that described beaker is put into described drying baker, bake out temperature is between 100 ℃ to 110 ℃, drying time is 30min at least, and the beaker tongs of having dried described in rear use is put into described exsiccator cool to room temperature described beaker, step M): on the electronic scales described in described beaker being put into described beaker tongs, weigh, draw the final weight of described beaker, so just can draw according to the variation of quality before and after beaker the quality of foreign organic matter.
2. heat exchanger method for detecting cleaning degree according to claim 1, is characterized by, and the wash cycles time described in described step B is 20min.
3. heat exchanger method for detecting cleaning degree according to claim 1, is characterized by, and the scavenging period described in described step D is 10min.
4. heat exchanger method for detecting cleaning degree according to claim 1, is characterized by, and the aperture of considering hole described in described step e on filter paper can be 5.0 μ m, 4.5 μ m and 4.0 μ m.
5. heat exchanger method for detecting cleaning degree according to claim 1, is characterized by, and the bath temperature described in described step J is 65 ℃.
6. heat exchanger method for detecting cleaning degree according to claim 1, is characterized by, and on the Rotary Evaporators described in described step J, can also be provided with vacuum pump.
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| CN104931404A (en) * | 2015-06-15 | 2015-09-23 | 九江七所精密机电科技有限公司 | Determining method for actual contamination capacity of oil filter element |
| CN104931378A (en) * | 2015-07-03 | 2015-09-23 | 合肥卡诺汽车空调有限公司 | Air-conditioner two-device residue content testing method |
| CN104949571A (en) * | 2015-06-17 | 2015-09-30 | 彭伟 | Method and device for zero-release online accurate chemical cleaning of tubular heat exchanger |
| CN104950081A (en) * | 2015-06-17 | 2015-09-30 | 彭伟 | On-line cleaning rate test method and device for shell-and-tube heat exchanger |
| CN105181741A (en) * | 2015-10-26 | 2015-12-23 | 张伟 | Multi-pipeline cleanliness online detection device |
| CN105241779A (en) * | 2015-11-02 | 2016-01-13 | 中国工程物理研究院激光聚变研究中心 | Method for testing mechanical surface cleanliness |
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| CN110333121A (en) * | 2019-07-24 | 2019-10-15 | 格力电器（郑州）有限公司 | Air conditioner heat exchanger cleanliness testing method and testing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931404A (en) * | 2015-06-15 | 2015-09-23 | 九江七所精密机电科技有限公司 | Determining method for actual contamination capacity of oil filter element |
| CN104949571A (en) * | 2015-06-17 | 2015-09-30 | 彭伟 | Method and device for zero-release online accurate chemical cleaning of tubular heat exchanger |
| CN104950081A (en) * | 2015-06-17 | 2015-09-30 | 彭伟 | On-line cleaning rate test method and device for shell-and-tube heat exchanger |
| CN104931378A (en) * | 2015-07-03 | 2015-09-23 | 合肥卡诺汽车空调有限公司 | Air-conditioner two-device residue content testing method |
| CN105181741A (en) * | 2015-10-26 | 2015-12-23 | 张伟 | Multi-pipeline cleanliness online detection device |
| CN105241779A (en) * | 2015-11-02 | 2016-01-13 | 中国工程物理研究院激光聚变研究中心 | Method for testing mechanical surface cleanliness |
| CN106053286A (en) * | 2016-06-27 | 2016-10-26 | 中航工业哈尔滨轴承有限公司 | Bearing cleanliness detection method |
| CN106768079A (en) * | 2017-02-22 | 2017-05-31 | 广州聚旭机电技术研究院有限公司 | One kind is used for cleaning solution heat exchange intelligent remote monitoring system |
| CN110333121A (en) * | 2019-07-24 | 2019-10-15 | 格力电器（郑州）有限公司 | Air conditioner heat exchanger cleanliness testing method and testing device |
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