CN217385462U - Heat supply heat exchanger and pipe network scaling tendency on-line measuring device thereof - Google Patents
Heat supply heat exchanger and pipe network scaling tendency on-line measuring device thereof Download PDFInfo
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- CN217385462U CN217385462U CN202221044858.4U CN202221044858U CN217385462U CN 217385462 U CN217385462 U CN 217385462U CN 202221044858 U CN202221044858 U CN 202221044858U CN 217385462 U CN217385462 U CN 217385462U
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Abstract
The utility model discloses a heat supply heat exchanger and a pipe network scaling tendency online measuring device thereof, which comprises a sample processing unit, a detecting unit and a control unit; the sample treatment unit comprises a water sample cooler and an aging heat-preservation water tank; the water inlet of the aging heat-preservation water tank is connected with the water sampling pipe at the low-temperature side outlet of the heat supply heat exchanger, and the water outlet of the aging heat-preservation water tank and the heat supplyThe inlet water sampling pipes at the low-temperature side of the heat exchanger are connected with the water inlet of the water sample cooler; the detection unit is connected with an outlet of the water sample cooler; the control unit is electrically connected with the detection unit. The controller is respectively connected with a heat exchanger inlet water sampling valve and Ca 2+ The on-line monitor, the heat exchanger outlet water sampling valve, the water tank discharge valve, the water tank vent valve and the aging water outlet valve are electrically connected. The utility model discloses the method can be under the condition that need not artificial intervention, conveniently, realize heat supply heat exchanger and pipe network scale deposit tendency and Ca in time 2+ The content is measured on line at the same time.
Description
Technical Field
The utility model relates to a heat supply heat exchanger and pipe network on-line measuring technical field especially relate to a heat supply heat exchanger and pipe network scale deposit tendency on-line measuring device thereof.
Background
The heat supply heat exchanger and the pipe network thereof are the main components of a city or a heat supply system and play the roles of energy transfer and transportation. Along with rising of the water temperature in heat exchanger and the pipe network, scale formation easily takes place for heat supply heat exchanger and pipe network, especially the heat exchanger of urban heating system primary network and pipe network thereof, in case the heat exchanger takes place the scale formation, heat exchange efficiency reduces, and heat energy can't carry the heating user, and the heat supply pipe network takes place the scale formation and then increases and carries the energy consumption. Therefore, various ways are adopted in the heating system to avoid or monitor the scaling of the heating heat exchanger and the pipe network thereof.
At present, two methods of directly monitoring the heat exchange surface and monitoring the water quality of a heat supply network are commonly used for monitoring whether the heat supply heat exchanger and a pipe network thereof are scaled or not. The direct monitoring heat exchange surface method can find whether the heat exchanger has scale, but the judgment can be made only when the scale is continuously increased after guidance of avoiding or retarding the continuous scaling; the monitoring method of the water quality index of the heat supply network can estimate and guide how to avoid or slow down the continuous scaling according to the test model, but the significance of judgment and guidance outside the working condition of the test model is greatly reduced.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of above-mentioned prior art, the utility model provides a heat supply heat exchanger and pipe network scale deposit tendency on-line measuring device thereof, the device can be on-line real-time measurement heat supply heat exchanger and the scale deposit tendency of pipe network, need not artificial intervention, for its treatment effect of heat supply network operation in time feedback, play the effect that prevents heat supply heat exchanger and pipe network emergence scale deposit.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a heat supply heat exchanger and its pipe network scale deposit tendency online measuring device, including sample processing unit, detecting element and control unit;
the sample treatment unit comprises a water sample cooler and an aging heat-preservation water tank; the water inlet of the aging heat-preservation water tank is connected with the outlet water sampling pipe at the low-temperature side of the heat supply heat exchanger, and the water outlet of the aging heat-preservation water tank and the inlet water sampling pipe at the low-temperature side of the heat supply heat exchanger are both connected with the water inlet of the water sample cooler;
the detection unit is connected with an outlet of the water sample cooler;
the control unit is electrically connected with the detection unit.
As a further improvement of the utility model, the detection unit is Ca 2+ An on-line monitor.
As a further improvement, be provided with heat exchanger entry water sample valve on the heat supply heat exchanger low temperature side entry water sampling tube, the control unit is connected with heat exchanger entry water sample valve electricity.
As the utility model discloses a further improvement, be provided with heat exchanger export water sample valve on the heat supply heat exchanger low temperature side export water sampling tube, the control unit is connected with heat exchanger export water sample valve electricity.
As a further improvement of the utility model, the water outlet of the aging heat-preservation water tank is divided into two paths, one path is provided with a water tank discharge valve, the other path is provided with an aging water outlet valve, and the aging water outlet valve is connected with the water inlet of the water sample cooler;
the control unit is electrically connected with the water tank discharge valve and the aging water outlet valve.
As a further improvement of the utility model, the aging and heat-preserving water tank is also provided with a water tank vent valve, and the control unit is electrically connected with the water tank vent valve.
As a further improvement of the utility model, the aging holding water tank is arranged to highly satisfy the difference of the liquid level inside the aging holding water tank to Ca 2+ The on-line monitor provides sample flow power.
Compared with the prior art, the utility model discloses possess following advantage:
the device of the utility model comprises a sample processing unit, a detection unit and a control unit; the measuring device can realize Ca of inlet water at the low-temperature side of the heat supply heat exchanger 2+ And the monitoring of the content can also monitor whether the heat supply heat exchanger and a pipe network thereof have scaling tendency in time. The measuring method of the measuring device is characterized in that Ca obtained after aging of low-temperature side inlet water and low-temperature side outlet water of the heat exchanger 2+ The scaling tendency is judged according to the content comparison result, the accuracy is higher, and whether the heat supply heat exchanger and the pipe network thereof generate results or not is judged more timely.
The utility model discloses the device realizes automatic on-line collection with heat supply heat exchanger and its pipe network, and simple and practical just measures heat supply heat exchanger and its pipe network scale deposit tendency degree of accuracy height, can obtain the Ca in heat supply heat exchanger and its pipe network fast 2+ The content and whether the content is in a scaling state or not are fed back in time, and the monitoring task of the heat supply heat exchanger and the pipe network thereof is met. Compared with the prior heat supply heat exchanger and the pipe network Ca thereof 2+ Other measurements for judging the content and the scaling tendency can quickly and accurately realize the heat supply heat exchanger and the pipe network Ca thereof 2+ The measurement of content and scaling tendency judgment has high accuracy, and manual measurement is reducedThe error that volume was introduced has solved heat supply heat exchanger and its pipe network scale deposit tendency monitoring untimely, work load big scheduling problem, is favorable to heat supply heat exchanger and its pipe network's safe, automatic control or intelligent operation.
The utility model discloses Ca after adopting this utility model measuring method to heat supply heat exchanger and judgement and heat exchanger low temperature side inlet water, the low temperature side export water ageing of pipe network scale deposit tendency thereof 2+ The content comparison results are correlated, the accuracy is higher, whether the heat supply heat exchanger and the pipe network of the heat supply heat exchanger have scaling tendency or not is judged more timely, the rapidity and the accuracy of scaling judgment of the heat supply heat exchanger and the pipe network of the heat supply heat exchanger are improved, meanwhile, the workload of operators is reduced, and the operation safety of the heat supply heat exchanger and the pipe network of the heat supply heat exchanger is improved.
The heat supply heat exchanger and the measuring method of the pipe network scaling tendency on-line measuring device thereof have the function of monitoring Ca in water of the heat supply network 2+ Besides the water quality index, the system can also judge whether the heat supply heat exchanger and the pipe network have scaling tendency in time, and guide and feed back the adjustment of other treatment industries such as dosing of heat supply network water in time, thereby avoiding scaling of the heat supply heat exchanger and the pipe network in time.
Drawings
FIG. 1 is a heat supply heat exchanger and an on-line measuring device for the scaling tendency of a pipe network thereof;
FIG. 2 is a flow chart of an on-line measuring method for the scaling tendency of a heat supply heat exchanger and a pipe network thereof.
Wherein, 1, a heat exchanger inlet water sampling valve; 2. a water sample cooler; 3. ca 2+ An on-line monitor; 4. an aging heat-preservation water tank; 5. a heat exchanger outlet water sampling valve; 6. a tank drain valve; 7. a tank vent valve; 8. an aging water outlet valve; 9. and a controller.
Detailed Description
The technical solution in the embodiment of the present invention is clearly and completely described below with reference to the drawings in the embodiment of the present invention. It is to be understood that the disclosed embodiments are merely exemplary of the invention, and are not intended to limit the invention to the precise embodiments disclosed. Based on the embodiment of the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a heat supply heat exchanger and a pipe network scaling tendency online measuring device thereof, which comprises a sample processing unit, a detecting unit and a control unit;
the sample treatment unit comprises a water sample cooler 2 and an aging heat-preservation water tank 4; the water inlet of the aging heat-preservation water tank 4 is connected with an outlet water sampling pipe at the low-temperature side of the heat supply heat exchanger, and the water outlet of the aging heat-preservation water tank 4 and the inlet water sampling pipe at the low-temperature side of the heat supply heat exchanger are both connected with the water inlet of the water sample cooler 2;
the detection unit is connected with the outlet of the water sample cooler 2;
the control unit is electrically connected with the detection unit.
As a preferred embodiment, the detection unit is Ca 2+ And an on-line monitor 3. Can obtain Ca 2+ Concentration to obtain fouling information.
As a preferred embodiment, a heat exchanger inlet water sampling valve 1 is arranged on the heat supply heat exchanger low-temperature side inlet water sampling pipe, a heat exchanger outlet water sampling valve 5 is arranged on the heat supply heat exchanger low-temperature side outlet water sampling pipe, the water outlets of the aging heat-preservation water tank 4 are divided into two paths, one path is provided with a water tank discharge valve 6, the other path is provided with an aging water outlet valve 8, and the aging water outlet valve 8 is connected with the water inlet of the water sample cooler 2; the aging heat-preservation water tank 4 is also provided with a water tank vent valve 7, and the controller 9 of the control unit, a water tank discharge valve 6, an aging water outlet valve 8 and a water tank vent valve 7 are respectively connected with a heat exchanger inlet water sampling valve 1 and a Ca 2+ The on-line monitor 3, a heat exchanger outlet water sampling valve 5, a water tank discharge valve 6, a water tank vent valve 7 and an aged water outlet valve 8 are electrically connected.
The water sample cooler 2 is arranged at Ca 2+ Before the on-line monitor 3. The water sample detection unit is Ca 2+ And the online monitor 3 can be respectively connected with water samples at the low-temperature side inlet and outlet of the heat supply heat exchanger.
The key point is that the height of the aging heat-preservation water tank 4 meets the requirement that the liquid level difference in the aging heat-preservation water tank 4 is towards Ca 2+ On-line monitor3 providing sample flow power. The aging heat-preservation water tank 4 is arranged on a detection pipeline of outlet water at the low-temperature side of the heat supply heat exchanger, and the outlet water passes through the liquid level difference of the aging heat-preservation water tank 4 and goes towards Ca 2+ The on-line monitor 3 provides sample flow power.
The utility model discloses still provide the measuring method based on heat supply heat exchanger and pipe network scale deposit tendency on-line measuring device thereof, including following step:
after the water sample cooler 2 and the detection unit are washed clean by the incoming water of the inlet water sampling tube at the low-temperature side of the heat supply heat exchanger, Ca for detecting the incoming water of the inlet water sampling tube at the low-temperature side of the heat supply heat exchanger 2+ Content c 1 ；
Opening a water sampling pipe at the low-temperature side outlet of the heat supply heat exchanger, after the water sample is washed and sufficiently filled in the aging and heat-preserving water tank 4, after the reaction, washing the water sample in the aging and heat-preserving water tank 4 through the water sample cooler 2 and the detection unit, and detecting Ca 2+ Content c 2 ；
And the control unit judges whether the heat supply heat exchanger and the pipe network thereof are scaled according to the ratio of the two water samples.
The utility model discloses the method can be under the condition that need not artificial intervention, realize heat supply heat exchanger and pipe network scale deposit tendency and Ca conveniently 2+ The content is measured on line at the same time. The measuring method of the measuring device can realize the Ca test of the inlet water at the low-temperature side of the heat supply heat exchanger 2+ The content can be measured, and whether the heat supply heat exchanger and a pipe network thereof have scaling tendency or not can be measured. The measuring method of the measuring device is characterized in that Ca obtained after aging of low-temperature side inlet water and low-temperature side outlet water of the heat exchanger 2+ And judging the scaling tendency according to the content comparison result.
The following description will further describe the embodiments of the present invention with reference to fig. 1 and 2.
Examples
As shown in figure 1, the utility model discloses a heat supply heat exchanger and pipe network scale deposit tendency on-line measuring device thereof, including sample processing unit, control and detecting element.
The sample processing unit comprises a heat exchanger inlet water sampling valve 1, a water sample cooler 2, an aging heat preservation water tank 4, a heat exchanger outlet water sampling valve 5, a water tank discharge valve 6, a water tank vent valve 7 and an aging water outlet valve 8.
The heat exchanger inlet water sampling valve 1 is connected with a heat supply heat exchanger low-temperature side inlet water sampling pipe; the heat exchanger outlet water sampling valve 5 is connected with a heat supply heat exchanger low-temperature side outlet water sampling pipe, and an aging heat-preservation water tank 4 is arranged on a detection pipeline of heat supply heat exchanger low-temperature side outlet water.
The detection unit and the control unit comprise Ca 2+ An on-line monitor 3 and a controller 9. The controller 9 is respectively connected with the heat exchanger inlet water sampling valve 1 and the Ca 2+ The on-line monitor 3, a heat exchanger outlet water sampling valve 5, a water tank discharge valve 6, a water tank vent valve 7 and an aged water outlet valve 8 are electrically connected.
The specific working process is as follows: opening the inlet water sampling valve 1 of the heat exchanger, and cooling the water sample by the water sampling cooler 2 and Ca 2+ After the on-line monitor 3 is washed clean, Ca of water coming from the water sample valve 1 at the inlet of the heat exchanger is detected 2+ Content c 1 Closing the inlet water sample valve 1 of the heat exchanger; opening a heat exchanger outlet water sampling valve 5, closing the heat exchanger outlet water sampling valve 5 and an aging water outlet valve 8 after a water sample is flushed and sufficient in the aging heat preservation water tank 4, opening the aging water outlet valve 8 after waiting for 60min, and cooling the water sample cooler 2 and Ca by the water sample in the aging heat preservation water tank 4 2+ Detecting Ca after on-line monitor 3 is washed clean 2+ Content c 2 And then judging whether the heat supply heat exchanger and the pipe network thereof are scaled according to the ratio of the two water samples.
A heat supply heat exchanger low-temperature side inlet water sampling pipe is arranged on the heat exchanger inlet water sample valve 1, and a heat supply heat exchanger low-temperature side outlet water sampling pipe is arranged on the heat exchanger outlet water sampling valve 5; the water pressure in the sampling pipe is ensured to be about 0.05-0.1 Mpa, so that the measured water sample can conveniently flow into Ca 2+ The measurement is performed in the on-line monitor 3.
As shown in figure 1, open the heat exchanger inlet water sampling valve 1, and cool the water sampling cooler 2 and Ca 2+ After the on-line monitor 3 is washed clean, Ca of water coming from the water sample valve 1 at the inlet of the heat exchanger is detected 2+ Content c 1 Closing the inlet water sample valve 1 of the heat exchanger; opening a sampling valve 5 of outlet water of the heat exchanger, after the water sample is washed and sufficiently aged in a heat preservation water tank 4,closing the outlet water sampling valve 5 and the aged water outlet valve 8 of the heat exchanger, opening the aged water outlet valve 8 after waiting for 60min, and cooling the water sample cooler 2 and the Ca by using the water sample in the aged heat-preservation water tank 4 2+ Detecting Ca after on-line monitor 3 is washed clean 2+ Content c 2 According to two water samples Ca 2+ The content ratio formula 1 judges whether the heat supply heat exchanger and a pipe network thereof are in a scaling state, and specifically comprises the following steps:
K＝c 1 /c 2 … … … formula 1
In the formula c 1 Ca for inlet water at low temperature side of heat supply heat exchanger 2+ Content (c); c. C 2 Ca of aged outlet water at low-temperature side of heat supply heat exchanger 2+ And (4) content.
When K is more than or equal to 1.2, the heat supply heat exchanger and the pipe network thereof have the scaling tendency, otherwise, the scaling tendency does not occur.
The measuring method based on the heat supply heat exchanger and the pipe network scaling tendency online measuring device comprises the following steps:
the device takes inlet water at the low-temperature side of the heat supply heat exchanger, and adopts Ca after cooling 2+ Content on-line measuring instrument for measuring Ca in inlet water at low temperature side of heat supply heat exchanger 2+ Content (c); simultaneously storing outlet water at low temperature side of heat supply heat exchanger in aging heat-preserving box for aging for 60min, cooling, and then using Ca 2+ Content on-line measuring instrument for measuring Ca of aged water at low-temperature side outlet of heat supply heat exchanger 2+ Content (c); according to Ca aged by low-temperature side inlet water and low-temperature side outlet water of the heat exchanger 2+ The content comparison result is used for judging the scaling tendency and simultaneously monitoring Ca in the low-temperature side inlet water of the heat supply heat exchanger on line 2+ The function of the content.
To sum up, the utility model discloses device simple structure can realize automatic measurement process, the utility model discloses the method can be under the condition that need not artificial intervention, realizes heat supply heat exchanger and pipe network scale deposit tendency and Ca conveniently 2+ The content is measured on line at the same time.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A heat supply heat exchanger and its pipe network scale deposit tendency online measuring device, wherein including sample processing unit, detecting element and control unit;
the sample treatment unit comprises a water sample cooler (2) and an aging heat-preservation water tank (4); the water inlet of the aging heat-preservation water tank (4) is connected with an outlet water sampling pipe at the low-temperature side of the heat supply heat exchanger, and the water outlet of the aging heat-preservation water tank (4) and the inlet water sampling pipe at the low-temperature side of the heat supply heat exchanger are both connected with the water inlet of the water sample cooler (2);
the detection unit is connected with an outlet of the water sample cooler (2);
the control unit is electrically connected with the detection unit.
2. A heat supply heat exchanger and pipe network scaling tendency on-line measuring device thereof as claimed in claim 1, wherein the detecting unit is Ca 2+ An on-line monitor (3).
3. The on-line measuring device for the scaling tendency of the heat supply heat exchanger and the pipe network thereof according to claim 1 is characterized in that a heat exchanger inlet water sampling valve (1) is arranged on the heat supply heat exchanger low-temperature side inlet water sampling pipe, and the control unit is electrically connected with the heat exchanger inlet water sampling valve (1).
4. The device for on-line measurement of the scaling tendency of the heat supply heat exchanger and the pipe network thereof according to claim 1, wherein a heat exchanger outlet water sampling valve (5) is arranged on the heat supply heat exchanger low-temperature side outlet water sampling pipe, and the control unit is electrically connected with the heat exchanger outlet water sampling valve (5).
5. The heat supply heat exchanger and the pipe network scaling tendency online measuring device thereof as claimed in claim 1, characterized in that the water outlet of the aging heat preservation water tank (4) is divided into two paths, one path is provided with a water tank discharge valve (6), the other path is provided with an aging water outlet valve (8), and the aging water outlet valve (8) is connected with the water inlet of the water sample cooler (2);
the control unit is electrically connected with a water tank discharge valve (6) and an aging water outlet valve (8).
6. A heat supply heat exchanger and its pipe network scaling tendency on-line measuring device according to claim 1, characterized in that the aging holding water tank (4) is further provided with a water tank vent valve (7), and the control unit is electrically connected with the water tank vent valve (7).
7. The heat supply heat exchanger and the pipe network scaling tendency online measuring device thereof as claimed in claim 1, wherein the aging holding water tank (4) is set to a height that satisfies the requirement of the internal liquid level difference of the aging holding water tank (4) to Ca 2+ The on-line monitor (3) provides sample flow power.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221044858.4U CN217385462U (en) | 2022-04-29 | 2022-04-29 | Heat supply heat exchanger and pipe network scaling tendency on-line measuring device thereof |
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| CN202221044858.4U CN217385462U (en) | 2022-04-29 | 2022-04-29 | Heat supply heat exchanger and pipe network scaling tendency on-line measuring device thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116538561A (en) * | 2023-05-11 | 2023-08-04 | 常州汉腾自动化设备有限公司 | Two-network hydraulic balance regulation and control system and method based on Internet of things |
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2022
- 2022-04-29 CN CN202221044858.4U patent/CN217385462U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116538561A (en) * | 2023-05-11 | 2023-08-04 | 常州汉腾自动化设备有限公司 | Two-network hydraulic balance regulation and control system and method based on Internet of things |
| CN116538561B (en) * | 2023-05-11 | 2023-10-27 | 常州汉腾自动化设备有限公司 | Two-network hydraulic balance regulation and control system and method based on Internet of things |
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