CN110173625A - A kind of heat supply network heat exchanger tube and the device for fast detecting and evaluation method of tube sheet leakage - Google Patents
A kind of heat supply network heat exchanger tube and the device for fast detecting and evaluation method of tube sheet leakage Download PDFInfo
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- CN110173625A CN110173625A CN201910496029.6A CN201910496029A CN110173625A CN 110173625 A CN110173625 A CN 110173625A CN 201910496029 A CN201910496029 A CN 201910496029A CN 110173625 A CN110173625 A CN 110173625A
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- Prior art keywords
- hydrophobic
- supply network
- heat supply
- steam extraction
- water sample
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000011156 evaluation Methods 0.000 title abstract description 9
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 80
- 238000000605 extraction Methods 0.000 claims abstract description 70
- 239000000523 sample Substances 0.000 claims abstract description 70
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 238000000034 method Methods 0.000 claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 238000012360 testing method Methods 0.000 claims abstract description 6
- 150000002500 ions Chemical class 0.000 claims description 27
- 238000005086 pumping Methods 0.000 claims description 4
- 150000001450 anions Chemical class 0.000 claims description 2
- 150000001768 cations Chemical class 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 230000000873 masking effect Effects 0.000 claims description 2
- 239000003507 refrigerant Substances 0.000 claims description 2
- 235000014171 carbonated beverage Nutrition 0.000 claims 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005341 cation exchange Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The device for fast detecting and evaluation method leaked the invention discloses a kind of heat supply network heat exchanger tube and tube sheet, the detection device includes heat supply network steam extraction probe tube, steam extraction thermostat on heat supply network steam extraction probe tube, steam extraction water sample flow cell after steam extraction thermostat and the steam extraction ion selectivity detecting electrode being set in steam extraction water sample flow cell；The hydrophobic probe tube of heat supply network, the hydrophobic thermostat on the hydrophobic probe tube of heat supply network, hydrophobic water sample flow cell after hydrophobic thermostat and the hydrophobic nonionic selective enumeration method electrode being set in hydrophobic water sample flow cell；The invention also discloses the fast appraisement methods that a kind of heat supply network heat exchanger tube and tube sheet leak, and carry out same ion to steam extraction, hydrophobic water sample by detection device and detect, calculate evaluated according to testing result；The device of the invention is simple, easy to operate, it can be achieved that on-line continuous accurately detects；Method is simple, precisely and can Fast Evaluation heat supply network heat exchanger tube and tube sheet with the presence or absence of leaking.
Description
Technical field
The present invention relates to heat supply network leak detection technology fields, and in particular to a kind of heat supply network heat exchanger tube and tube sheet leakage it is quick
Detection device and evaluation method.
Background technique
Thermal power plant unit heat supply network heat exchanger in work progress due to, there are local corrosion occurs in certain defects or operation, causing
There is leakage or leakage phenomenon in heat supply network heat exchanger tube and tube sheet, so as to cause the hydrophobic pollution of heat supply network, and then cause unit water-steam system
Fouling, corrosion.There is the detection means and evaluation method of leakage or leakage for heat supply network heat exchanger tube and tube sheet at present, it is main to use
The hydrophobic online hydrogen conductivity of heat supply network is detected, and judges heat supply network with the presence or absence of leakage roughly according to its value size.
But it is had the disadvantage in that using the above method
1) in the process of running, cation exchange column can be original in hydrophobic because exchanging for the hydrophobic online hydrogen conductivity table of heat supply network
Cation and fail, need to frequently replace, regenerate.
2) when unit load changes, heat supply network steam extraction quality also changes therewith, leads to the hydrophobic online hydrogen conductivity of heat supply network not
It can really reflect heat supply network with the presence or absence of leakage.
Summary of the invention
Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a kind of heat supply network heat exchanger tubes and tube sheet to leak
Device for fast detecting, the device is simple, easy to operate, it can be achieved that on-line continuous accurately detects.Another object of the present invention is
A kind of heat supply network heat exchanger tube and tube sheet leakage fast appraisement method be provided, this method is simple, precisely and can Fast Evaluation heat supply network exchange heat
Pipe and tube sheet are with the presence or absence of leakage.
In order to achieve the above object, the present invention is achieved by the following scheme.
A kind of heat supply network heat exchanger tube and the device for fast detecting of tube sheet leakage, including the heat supply network being connected to heat supply network bleed steam pipework a
Steam extraction probe tube f, the steam extraction thermostat e on heat supply network steam extraction probe tube f, the steam extraction water sample after steam extraction thermostat e
The flow cell i and steam extraction ion selectivity detecting electrode m being set in steam extraction water sample flow cell i；It is connected to heat supply network hydrophobic pipeline d
The hydrophobic probe tube g of heat supply network, the hydrophobic thermostat h on the hydrophobic probe tube g of heat supply network, after hydrophobic thermostat h dredge
The water water sample flow cell k and hydrophobic nonionic selective enumeration method electrode n being set in hydrophobic water sample flow cell k.
Preferably, the steam extraction thermostat e and hydrophobic thermostat h can automatically adjust leaving water temperature according to probe temperature
It is 25 ± 2 DEG C；
Preferably, into upper under water sample circulation style is in the steam extraction water sample flow cell i and hydrophobic water sample flow cell k
Out, it at the uniform velocity flows；
Preferably, the steam extraction ion selectivity detecting electrode m and hydrophobic nonionic selective enumeration method electrode n be it is same from
Sub- selective enumeration method electrode.
Preferably, the steam extraction thermostat e and hydrophobic thermostat h is using constant temperature such as water cooling, air-cooled or refrigerants
Mode.
Preferably, the steam extraction ion selectivity detecting electrode m and hydrophobic nonionic selective enumeration method electrode n is single sun
Ion or single anion electrodes selective, and do not tested and interfered by other ions when test, or other are eliminated using masking agent
The test of ion is interfered.
A kind of heat supply network heat exchanger tube and the fast appraisement method of tube sheet leakage, are carried out by following steps:
Step 1, water sample temperature 25 ± 2 is made through steam extraction thermostat (e) by heat supply network steam extraction probe tube (f) to heat supply network steam extraction
DEG C, steam extraction water sample flow cell (i) is led to, using certain ion in steam extraction ion selectivity detecting electrode (m) detection steam extraction water sample
X, content are denoted as XSteam extraction；
Step 2, hydrophobic to heat supply network to make water sample temperature 25 ± 2 through hydrophobic thermostat (h) by the hydrophobic probe tube (g) of heat supply network
DEG C, hydrophobic water sample flow cell (k) is led to, ion of the same race in hydrophobic water sample is detected using hydrophobic nonionic selective enumeration method electrode (n)
X, content are denoted as XIt is hydrophobic；
Step 3, according to detection data in step 1 and step 2, X is calculatedIt is hydrophobic/XSteam extraction, as 1 < XIt is hydrophobic/XSteam extractionWhen≤5, show heat
There is leakage or micro- leakage in net heat exchanger tube or tube sheet；Work as XIt is hydrophobic/XSteam extractionWhen > 5, show that heat supply network heat exchanger tube or tube sheet have leakage.
Preferably, the ion X is Na+、Ca2+、Mg2+、K+、Fe3+、Cl-、SO4 2-、PO4 3-、NO3 -Equal inorganic salts yin, yang
One of ion.
Compared with prior art, advantages of the present invention are as follows:
Heat supply network heat exchanger tube and tube sheet leak device for fast detecting, and the device is simple, easy to operate, it can be achieved that on-line continuous is accurate
Detection.Fast appraisement method is leaked it is a further object to provide a kind of heat supply network heat exchanger tube and tube sheet, this method is simple,
Can quicklook reflection heat supply network heat exchanger tube and tube sheet leakage situation.
Heat supply network heat exchanger tube of the invention and tube sheet leakage device for fast detecting are simple, easy to operate, it can be achieved that on-line continuous is quasi-
Really detection；Heat supply network heat exchanger tube of the invention and tube sheet leakage fast appraisement method it is simple, precisely and can Fast Evaluation heat supply network exchange heat
Pipe and tube sheet are with the presence or absence of leakage.
Detailed description of the invention
Fig. 1 is heat supply network heat exchanger tube and tube sheet leakage device for fast detecting structural schematic diagram of the invention.
Specific embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
It will be appreciated that the following example is merely to illustrate the present invention, and it is not construed as limiting the scope of the invention.
With reference to Fig. 1, the present invention provides the device for fast detecting that a kind of heat supply network heat exchanger tube and tube sheet leak, including with heat supply network
Heat supply network steam extraction probe tube f, the steam extraction thermostat e on heat supply network steam extraction probe tube f of bleed steam pipework a connection, through steam extraction perseverance
Steam extraction water sample flow cell i after the warm device e and steam extraction ion selectivity detecting electrode m being set in steam extraction water sample flow cell i；
The hydrophobic probe tube g of the heat supply network being connected to heat supply network hydrophobic pipeline d, the hydrophobic thermostat h on the hydrophobic probe tube g of heat supply network, warp
Hydrophobic water sample flow cell k after hydrophobic thermostat h and the hydrophobic nonionic selective enumeration method being set in hydrophobic water sample flow cell k
Electrode n.
In heat supply network heat exchanger tube of the invention and tube sheet leakage device for fast detecting, steam extraction thermostat e and hydrophobic constant temperature dress
Setting h and can automatically adjusting leaving water temperature according to probe temperature is 25 ± 2 DEG C；In steam extraction water sample flow cell i and hydrophobic water sample flow cell k
Water sample circulation style is bottom in and top out, is at the uniform velocity flowed；Steam extraction ion selectivity detecting electrode m and hydrophobic nonionic selective enumeration method
Electrode n is same ion selectivity detecting electrode.
Heat supply network heat exchanger tube of the invention and tube sheet leak device for fast detecting, easy to operate, easy to operate, it can be achieved that connecting online
Continuous accurate detection.
The present invention also provides a kind of heat supply network heat exchanger tubes and tube sheet to leak fast appraisement method, by detection device to pumping
Vapour, hydrophobic water sample carry out same ion and are detected, and calculate evaluated according to testing result.
Specific steps:
Step 1, water sample temperature 25 ± 2 is made through steam extraction thermostat (e) by heat supply network steam extraction probe tube (f) to heat supply network steam extraction
DEG C, steam extraction water sample flow cell (i) is led to, using certain ion in steam extraction ion selectivity detecting electrode (m) detection steam extraction water sample
X, content are denoted as XSteam extraction；
Step 2, hydrophobic to heat supply network to make water sample temperature 25 ± 2 through hydrophobic thermostat (h) by the hydrophobic probe tube (g) of heat supply network
DEG C, hydrophobic water sample flow cell (k) is led to, ion of the same race in hydrophobic water sample is detected using hydrophobic nonionic selective enumeration method electrode (n)
X, content are denoted as XIt is hydrophobic；
Step 3, according to detection data in step 1 and step 2, X is calculatedIt is hydrophobic/XSteam extraction, as 1 < XIt is hydrophobic/XSteam extractionWhen≤5, show heat
There is leakage or micro- leakage in net heat exchanger tube or tube sheet；Work as XIt is hydrophobic/XSteam extractionWhen > 5, show that heat supply network heat exchanger tube or tube sheet have leakage.
Heat supply network heat exchanger tube of the invention and tube sheet leakage fast appraisement method it is simple, precisely and can Fast Evaluation heat supply network change
Heat pipe and tube sheet are with the presence or absence of leakage.
Although the present invention is described in detail with a general description of the specific embodiments in this specification,
But on the basis of the present invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.
Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to claimed model
It encloses.
Claims (8)
1. a kind of heat supply network heat exchanger tube and tube sheet leakage device for fast detecting, which is characterized in that including with heat supply network bleed steam pipework (a)
The heat supply network steam extraction probe tube (f) of connection, the steam extraction thermostat (e) being located on heat supply network steam extraction probe tube (f), fills through steam extraction constant temperature
Steam extraction water sample flow cell (i) after setting (e) and the steam extraction ion selectivity detecting electrode being set in steam extraction water sample flow cell (i)
(m)；The hydrophobic probe tube (g) of the heat supply network being connected to heat supply network hydrophobic pipeline (d), the hydrophobic perseverance being located on the hydrophobic probe tube (g) of heat supply network
Warm device (h), hydrophobic water sample flow cell (k) after hydrophobic thermostat (h) and is set in hydrophobic water sample flow cell (k)
Hydrophobic nonionic selective enumeration method electrode (n).
2. heat supply network heat exchanger tube according to claim 1 and the device for fast detecting of tube sheet leakage, which is characterized in that the pumping
It is 25 ± 2 DEG C that vapour thermostat (e) and hydrophobic thermostat (h) can automatically adjust leaving water temperature according to probe temperature.
3. heat supply network heat exchanger tube according to claim 1 and the device for fast detecting of tube sheet leakage, which is characterized in that the pumping
Water sample circulation style is bottom in and top out in carbonated drink sample flow cell (i) and hydrophobic water sample flow cell (k), is at the uniform velocity flowed.
4. heat supply network heat exchanger tube according to claim 1 and the device for fast detecting of tube sheet leakage, which is characterized in that the pumping
Vapour ion selectivity detecting electrode (m) and hydrophobic nonionic selective enumeration method electrode (n) are same ion selectivity detecting electrode.
5. heat supply network heat exchanger tube according to claim 1 and the device for fast detecting of tube sheet leakage, which is characterized in that described
Steam extraction thermostat (e) and hydrophobic thermostat (h) use water cooling, air-cooled or refrigerant thermostatic mode.
6. heat supply network heat exchanger tube according to claim 1 and the device for fast detecting of tube sheet leakage, which is characterized in that described
Steam extraction ion selectivity detecting electrode (m) and hydrophobic nonionic selective enumeration method electrode (n) are single cation or single anion
Electrodes selective, and do not tested and interfered by other ions when test, or eliminate the test interference of other ions using masking agent.
7. a kind of heat supply network heat exchanger tube and the fast appraisement method of tube sheet leakage, which is characterized in that carried out by following steps:
Step 1,25 ± 2 DEG C of water sample temperature are made through steam extraction thermostat (e) by heat supply network steam extraction probe tube (f) to heat supply network steam extraction,
Steam extraction water sample flow cell (i) is led to, certain ion X in steam extraction water sample is detected using steam extraction ion selectivity detecting electrode (m),
Content is denoted as XSteam extraction；
It is step 2, hydrophobic to heat supply network to make 25 ± 2 DEG C of water sample temperature through hydrophobic thermostat (h) by the hydrophobic probe tube (g) of heat supply network,
Hydrophobic water sample flow cell (k) is led to, ion X of the same race in hydrophobic water sample is detected using hydrophobic nonionic selective enumeration method electrode (n),
Content is denoted as XIt is hydrophobic；
Step 3, according to detection data in step 1 and step 2, X is calculatedIt is hydrophobic/XSteam extraction, as 1 < XIt is hydrophobic/XSteam extractionWhen≤5, show that heat supply network changes
There is leakage or micro- leakage in heat pipe or tube sheet；Work as XIt is hydrophobic/XSteam extractionWhen > 5, show that heat supply network heat exchanger tube or tube sheet have leakage.
8. heat supply network heat exchanger tube according to claim 7 and tube sheet leak fast appraisement method, which is characterized in that it is described from
Sub- X is Na+、Ca2+、Mg2+、K+、Fe3+、Cl-、SO4 2-、PO4 3-Or NO3 -One of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910496029.6A CN110173625B (en) | 2019-06-10 | Rapid detection device and evaluation method for leakage of heat exchange tubes and tube plates of heat supply network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910496029.6A CN110173625B (en) | 2019-06-10 | Rapid detection device and evaluation method for leakage of heat exchange tubes and tube plates of heat supply network |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110173625A true CN110173625A (en) | 2019-08-27 |
| CN110173625B CN110173625B (en) | 2024-06-04 |
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|---|---|---|---|---|
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