CN210153562U - Quick detection device that heat supply network heat exchange tube and tube sheet leaked - Google Patents
Quick detection device that heat supply network heat exchange tube and tube sheet leaked Download PDFInfo
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- CN210153562U CN210153562U CN201920863921.9U CN201920863921U CN210153562U CN 210153562 U CN210153562 U CN 210153562U CN 201920863921 U CN201920863921 U CN 201920863921U CN 210153562 U CN210153562 U CN 210153562U
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Abstract
The utility model discloses a rapid detection device for heat exchange tube and tube plate leakage of a heat supply network, which comprises a heat supply network steam extraction sampling tube, a steam extraction constant temperature device arranged on the heat supply network steam extraction sampling tube, a steam extraction water sample circulation pool passing through the steam extraction constant temperature device and a steam extraction ion selective detection electrode arranged in the steam extraction water sample circulation pool; the device comprises a heat supply network drainage sampling pipe, a drainage constant temperature device, a drainage water sample flow cell and a hydrophobic ion selective detection electrode, wherein the drainage constant temperature device is positioned on the heat supply network drainage sampling pipe; the utility model detects the same ion for the steam extraction and the drainage water sample through the detection device, and evaluates according to the calculation of the detection result; the device of the utility model is simple and easy to operate, and can realize on-line continuous accurate detection; the method is simple and accurate, and can quickly evaluate whether the heat exchange tube and the tube plate of the heat supply network have leakage or not.
Description
Technical Field
The utility model relates to a heat supply network leak testing technical field, concretely relates to quick detection device that heat supply network heat exchange tube and tube sheet leaked.
Background
The heat supply unit heat supply network heat exchanger has some defects in the construction process or local corrosion in the operation process, so that the heat supply network heat exchange tube and the tube plate have leakage or leakage phenomena, the hydrophobic pollution of the heat supply network is caused, and the scaling and corrosion of a unit water vapor system are further caused. At present, a detection means and an evaluation method aiming at leakage or leakage of a heat exchange pipe and a pipe plate of a heat supply network mainly adopt the on-line hydrogen conductivity for detecting the drainage of the heat supply network and roughly judge whether the heat supply network has leakage or not according to the value of the on-line hydrogen conductivity.
However, the above method has the following disadvantages:
1) when the online hydrogen conductivity meter for the heat supply network drainage is in operation, the cation exchange column of the online hydrogen conductivity meter fails due to the exchange of original cations in the heat supply network drainage, and needs to be replaced and regenerated frequently.
2) When the load of the unit changes, the steam extraction quality of the heat supply network also changes, so that the on-line hydrogen conductivity of the hydrophobic water of the heat supply network cannot truly reflect whether the heat supply network leaks or not.
Disclosure of Invention
To the problem that exists among the prior art, the utility model aims to provide a quick detection device that heat supply network heat exchange tube and tube sheet leaked, the device is simple, easy operation, can realize online accurate detection in succession. Another object of the utility model is to provide a heat supply network heat exchange tube and tube sheet leak quick evaluation method, this method is simple, accurate and can evaluate heat supply network heat exchange tube and tube sheet fast and whether have the leakage.
In order to achieve the above purpose, the present invention adopts the following technical solution.
A rapid detection device for heat exchange tube and tube plate leakage of a heat supply network comprises a heat supply network steam extraction sampling tube f communicated with a heat supply network steam extraction pipeline a, a steam extraction constant temperature device e positioned on the heat supply network steam extraction sampling tube f, a steam extraction water sample flow pool i passing through the steam extraction constant temperature device e and a steam extraction ion selective detection electrode m arranged in the steam extraction water sample flow pool i; the device comprises a heat supply network drainage sampling pipe g communicated with a heat supply network drainage pipeline d, a drainage constant temperature device h positioned on the heat supply network drainage sampling pipe g, a drainage water sample flow cell k passing through the drainage constant temperature device h and a hydrophobic ion selective detection electrode n arranged in the drainage water sample flow cell k.
Preferably, the steam extraction constant temperature device e and the drainage constant temperature device h can automatically adjust the water outlet temperature to 25 +/-2 ℃ according to the sampling temperature;
preferably, the water sample flowing modes in the steam extraction water sample flowing pool i and the hydrophobic water sample flowing pool k are both downward inlet and upward outlet, and the water sample flows at a constant speed;
preferably, the extraction ion selective detection electrode m and the hydrophobic ion selective detection electrode n are the same ion selective detection electrode.
Preferably, the steam extraction thermostat e and the drainage thermostat h adopt constant temperature modes such as water cooling, air cooling or refrigerant and the like.
Preferably, the extraction ion selective detection electrode m and the hydrophobic ion selective detection electrode n are single cation or single anion selective electrodes, and are not interfered by other ion tests during testing, or testing interference of other ions is eliminated by adopting a masking agent.
A method for quickly evaluating leakage of a heat exchange tube and a tube plate of a heat supply network comprises the following steps:
step 1, extracting steam from a heat supply network, leading the temperature of a water sample to a steam extraction water sample flow pool (i) from a steam extraction sampling pipe (f) through a steam extraction constant temperature device (e) under the condition that the temperature of the water sample is 25 +/-2 ℃, and detecting certain ions X in the steam extraction water sample by adopting a steam extraction ion selective detection electrode (m), wherein the content of the ions X is recorded as XSteam extraction；
Step 2, draining the heat supply network by a heat supply network drainage sampling tube (g) through drainage constant temperature equipmentPlacing the water sample at 25 +/-2 deg.c to the hydrophobic water sample flow cell, detecting the homogeneous ion X in the hydrophobic water sample with hydrophobic ion selective detecting electrode and the content is recorded as XHydrophobic；
Step 3, calculating X according to the detected data in the step 1 and the step 2Hydrophobic/XSteam extractionWhen 1 is<XHydrophobic/XSteam extractionWhen the temperature is less than or equal to 5, the leakage or micro leakage exists in the heat exchange pipe or the pipe plate of the heat supply network; when X is presentHydrophobic/XSteam extraction>And 5, the leakage of the heat exchange tube or the tube plate of the heat supply network is indicated.
Preferably, the ion X is Na+、Ca2+、Mg2+、K+、Fe3+、Cl-、SO4 2-、PO4 3-、NO3 -And the like, and one of anions and cations of inorganic salts.
Compared with the prior art, the utility model has the advantages that:
the device for rapidly detecting the leakage of the heat exchange tube and the tube plate of the heat supply network is simple and easy to operate, and can realize online continuous accurate detection. Another object of the utility model is to provide a heat supply network heat exchange tube and tube sheet leak quick evaluation method, this method is simple, can be quick audio-visual reflection heat supply network heat exchange tube and tube sheet leak the condition.
The utility model has the advantages of simple and easy operation, and can realize on-line continuous accurate detection; the utility model discloses a heat supply network heat exchange tube and tube sheet leak quick evaluation method is simple, accurate and can evaluate heat supply network heat exchange tube and tube sheet fast whether have the leakage.
Drawings
Fig. 1 is a schematic structural view of the heat exchange tube and tube plate leakage rapid detection device for the heat supply network of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but those skilled in the art will understand that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention.
Referring to fig. 1, the utility model provides a rapid detection device for heat exchange tube and tube plate leakage of heat supply network, which comprises a heat supply network steam extraction sampling tube f communicated with a heat supply network steam extraction pipeline a, a steam extraction constant temperature device e positioned on the heat supply network steam extraction sampling tube f, a steam extraction water sample circulation pool i passing through the steam extraction constant temperature device e and a steam extraction ion selective detection electrode m arranged in the steam extraction water sample circulation pool i; the device comprises a heat supply network drainage sampling pipe g communicated with a heat supply network drainage pipeline d, a drainage constant temperature device h positioned on the heat supply network drainage sampling pipe g, a drainage water sample flow cell k passing through the drainage constant temperature device h and a hydrophobic ion selective detection electrode n arranged in the drainage water sample flow cell k.
In the device for rapidly detecting the leakage of the heat exchange tube and the tube plate of the heat supply network, the steam extraction constant temperature device e and the drainage constant temperature device h can automatically adjust the water outlet temperature to be 25 +/-2 ℃ according to the sampling temperature; the water sample circulation modes in the steam extraction water sample circulation pool i and the hydrophobic water sample circulation pool k are downward inlet and upward outlet, and flow at a constant speed; the steam extraction ion selective detection electrode m and the hydrophobic ion selective detection electrode n are the same ion selective detection electrode.
The utility model discloses a heat supply network heat exchange tube and tube sheet leak short-term test device, easy operation, accurate detection in succession can realize on line.
The utility model also provides a quick evaluation method is leaked to heat supply network heat exchange tube and tube sheet, carries out same kind of ion through detection device to extraction of steam, hydrophobic water sample and detects, calculates according to the testing result and appraises.
The method comprises the following specific steps:
step 1, extracting steam from a heat supply network, leading the temperature of a water sample to a steam extraction water sample flow pool (i) from a steam extraction sampling pipe (f) through a steam extraction constant temperature device (e) under the condition that the temperature of the water sample is 25 +/-2 ℃, and detecting certain ions X in the steam extraction water sample by adopting a steam extraction ion selective detection electrode (m), wherein the content of the ions X is recorded as XSteam extraction；
Step 2, draining the heat supply network, leading the water sample to a hydrophobic water sample flow cell (k) at the temperature of 25 +/-2 ℃ by a heat supply network drainage sampling tube (g) through a drainage constant temperature device (h), and detecting the same ions X in the hydrophobic water sample by using a hydrophobic ion selective detection electrode (n), wherein the content of the same ions X is recorded as XHydrophobic；
Step 3, calculating X according to the detected data in the step 1 and the step 2Hydrophobic/XSteam extractionWhen 1 is<XHydrophobic/XSteam extractionWhen the temperature is less than or equal to 5, the leakage or micro leakage exists in the heat exchange pipe or the pipe plate of the heat supply network; when X is presentHydrophobic/XSteam extraction>And 5, the leakage of the heat exchange tube or the tube plate of the heat supply network is indicated.
The utility model discloses a heat supply network heat exchange tube and tube sheet leak quick evaluation method is simple, accurate and can evaluate heat supply network heat exchange tube and tube sheet fast whether have the leakage.
Although the invention has been described in detail in this specification with reference to specific embodiments and illustrative embodiments, it will be apparent to those skilled in the art that certain changes and modifications can be made therein without departing from the scope of the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (3)
1. A rapid detection device for heat exchange tube and tube plate leakage of a heat supply network is characterized by comprising a heat supply network steam extraction sampling tube (f) communicated with a heat supply network steam extraction pipeline (a), a steam extraction constant temperature device (e) positioned on the heat supply network steam extraction sampling tube (f), a steam extraction water sample circulation pool (i) passing through the steam extraction constant temperature device (e) and a steam extraction ion selective detection electrode (m) arranged in the steam extraction water sample circulation pool (i); the device comprises a heat supply network drainage sampling pipe (g) communicated with a heat supply network drainage pipeline (d), a drainage constant temperature device (h) positioned on the heat supply network drainage sampling pipe (g), a drainage water sample flow cell (k) passing through the drainage constant temperature device (h) and a hydrophobic ion selective detection electrode (n) arranged in the drainage water sample flow cell (k).
2. The device for rapidly detecting the leakage of the heat exchange tube and the tube plate of the heat supply network as claimed in claim 1, wherein the steam extraction ion selective detection electrode (m) and the hydrophobic ion selective detection electrode (n) are the same ion selective detection electrode.
3. The device for rapidly detecting the leakage of the heat exchange tube and the tube plate of the heat supply network according to claim 1, wherein the steam extraction ion selective detection electrode (m) and the hydrophobic ion selective detection electrode (n) are single cation or single anion selective electrodes, and are not interfered by other ion tests during testing, or are eliminated by adopting a masking agent.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920863921.9U CN210153562U (en) | 2019-06-10 | 2019-06-10 | Quick detection device that heat supply network heat exchange tube and tube sheet leaked |
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| CN201920863921.9U CN210153562U (en) | 2019-06-10 | 2019-06-10 | Quick detection device that heat supply network heat exchange tube and tube sheet leaked |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173625A (en) * | 2019-06-10 | 2019-08-27 | 西安热工研究院有限公司 | A kind of heat supply network heat exchanger tube and the device for fast detecting and evaluation method of tube sheet leakage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173625A (en) * | 2019-06-10 | 2019-08-27 | 西安热工研究院有限公司 | A kind of heat supply network heat exchanger tube and the device for fast detecting and evaluation method of tube sheet leakage |
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