CN214584791U - A dynamic simulation test device for performance evaluation of ultra-high temperature thermal network scale and corrosion inhibitor - Google Patents
A dynamic simulation test device for performance evaluation of ultra-high temperature thermal network scale and corrosion inhibitor Download PDFInfo
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- CN214584791U CN214584791U CN202120542917.XU CN202120542917U CN214584791U CN 214584791 U CN214584791 U CN 214584791U CN 202120542917 U CN202120542917 U CN 202120542917U CN 214584791 U CN214584791 U CN 214584791U
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- 238000012360 testing method Methods 0.000 title claims abstract description 45
- 230000007797 corrosion Effects 0.000 title claims abstract description 44
- 238000005260 corrosion Methods 0.000 title claims abstract description 44
- 239000003112 inhibitor Substances 0.000 title claims abstract description 24
- 238000005094 computer simulation Methods 0.000 title claims abstract description 22
- 238000011156 evaluation Methods 0.000 title description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 116
- 238000003860 storage Methods 0.000 claims abstract description 41
- 238000005070 sampling Methods 0.000 claims abstract description 15
- 239000010935 stainless steel Substances 0.000 claims abstract description 15
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 15
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 11
- 239000010962 carbon steel Substances 0.000 claims abstract description 11
- 238000003466 welding Methods 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 229910052755 nonmetal Inorganic materials 0.000 claims description 7
- 239000000498 cooling water Substances 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000007774 longterm Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005485 electric heating Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
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Abstract
一种超高温热网阻垢缓蚀剂性能评价动态模拟试验装置，其目的在于克服现有装置不满足条件，提供一种满足热网循环水超高温的试验条件；其包括耐高温高压储水罐、电加热装置、循环水泵、腐蚀挂片装置、不锈钢板式换热器和取样装置；其有益效果在于：本实用新型中的动态模拟装置性能可靠且易于制作，可满足超高温试验条件；既能测试碳钢管道长期运行过程中某周期内的的平均腐蚀速率，也能测试试验过程中循环水水质变化。
A dynamic simulation test device for evaluating the performance of a scale and corrosion inhibitor for an ultra-high temperature heating network, the purpose of which is to overcome the unsatisfactory conditions of the existing device and provide a test condition that satisfies the ultra-high temperature of circulating water in the heating network; it includes high temperature and high pressure water storage. tank, electric heating device, circulating water pump, corrosion coupon device, stainless steel plate heat exchanger and sampling device; its beneficial effects are: the dynamic simulation device in the utility model has reliable performance and is easy to manufacture, and can meet the ultra-high temperature test conditions; It can test the average corrosion rate in a certain period during the long-term operation of carbon steel pipelines, and can also test the changes in the quality of circulating water during the test.
Description
Technical Field
The utility model relates to an ultra-temperature scale and corrosion inhibitor performance evaluation field specifically is a heat supply network circulating water ultra-temperature scale and corrosion inhibitor performance evaluation dynamic simulation test device
Background
With the continuous expansion of the scale of urban central heating, the temperature of circulating water in a heating system is increased, the temperature of circulating water in a primary pipe network of part of heating companies is increased from 95 ℃ to 130 ℃ at present, and the carbon steel pipeline in the system faces a more severe corrosion environment due to the higher temperature of the circulating water. Carbon steel corrosion not only can reduce the wall thickness of the pipeline and influence the system safety, but also can be attached to the heat exchange plate after corrosion products enter circulating water, thereby reducing the heat exchange efficiency and increasing the risk of pitting corrosion. The addition of the scale and corrosion inhibitor into the circulating water is an effective way, and the evaluation of the performance of the scale and corrosion inhibitor is particularly important. Therefore, the device can evaluate the performance of the scale and corrosion inhibitor at 130 ℃, and has certain practical significance for preventing carbon steel corrosion of circulating water of a heat supply network.
The water pressure in the circulating water system of the heat supply network reaches 1Mpa, the water temperature can reach 130 ℃ at most, and the conventional dynamic simulation test device can not be suitable for the condition. At present, no dynamic simulation test device for evaluating the performance of the circulating water over-temperature scale and corrosion inhibitor of the heat supply network exists.
Aiming at the defects of the prior art, a dynamic simulation test device for evaluating the performance of the ultrahigh-temperature scale and corrosion inhibitor of the circulating water of the heat supply network is urgently needed to be researched so as to meet the existing requirements.
Disclosure of Invention
An object of the utility model is to overcome prior art's not enough, provide a heat supply network circulating water ultra-temperature scale and corrosion inhibitor performance evaluation dynamic simulation test device.
In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:
a dynamic simulation test device for evaluating the performance of an ultra-high temperature heat supply network scale and corrosion inhibitor comprises a high temperature and high pressure resistant water storage tank 1, wherein the outlet of the high temperature and high pressure resistant water storage tank 1 is divided into two paths, a water drain valve 9 is arranged on one path, the other path is communicated with a hot water inlet side interface of a stainless steel plate type heat exchanger 5 simulating the running state of a plate type heat exchanger of a heat supply network circulating water system through a connecting pipeline, and a circulating water pump 2, an outlet control valve 3 and a high temperature resistant flowmeter 4 are sequentially arranged on the connecting pipeline; the hot water outlet side interface of the stainless steel plate type heat exchanger 5 is connected with the bottom interface of the corrosion hanging piece device 6; an upper interface of the corrosion hanging piece device 6 is communicated with an inlet of the high-temperature and high-pressure resistant water storage tank 1 through a connecting pipeline, and a pipeline exhaust valve 12 and a return water control valve 7 are arranged on the connecting pipeline; a pipeline between the water outlet control valve 3 and the high-temperature-resistant flow meter 4 is communicated with an inlet of the high-temperature-resistant high-pressure water storage tank 1 through a pipeline, a flow regulating valve 8 is arranged on the pipeline, a branch is arranged on the pipeline between the circulating water pump 2 and the water outlet control valve 3, a sampling control valve 10 and a sampling device 11 are arranged on the branch, and the high-temperature-resistant high-pressure water storage tank 1 is connected with a power supply and a temperature control box 19;
a non-metal sample hanging rack 13 is arranged in the corrosion hanging piece device 6, and a carbon steel test piece 14 is hung on the non-metal sample hanging rack 13;
the high-temperature and high-pressure resistant water storage tank 1 is provided with an electric heater 18, a top water injection valve 16, a temperature sensor 15 and a pointer pressure gauge 17;
and a power inlet wire breaker 21, a relay 22 and a temperature controller 20 which are connected are arranged in the power and temperature control box 19, the temperature controller 20 is connected with the temperature sensor 15, and the relay 22 is connected with the electric heater 18.
The connecting pipeline is a stainless steel pipeline, and a heat-insulating layer is arranged outside the connecting pipeline.
The high-temperature and high-pressure resistant water storage tank 1 is a steel cylindrical autoclave, and a hole in the top of the high-temperature and high-pressure resistant water storage tank 1 is connected with a top water injection valve 16 and a pointer pressure gauge 17 through welding; a hole is formed in the side surface of the high-temperature and high-pressure resistant water storage tank 1 and is connected with a screw sleeve seat 24 through welding, and the electric heater 18 is connected to the screw sleeve seat 24 through a connecting rod 23; the side surface of the high-temperature and high-pressure resistant water storage tank 1 is provided with a hole and is connected with a temperature sensor 15 through welding; the bottom and the top of the high-temperature and high-pressure resistant water storage tank 1 are provided with holes which are connected with a circulating water pump 2 and a backwater control valve 7 through a welded stainless steel connecting pipeline.
The connecting rod 23 is provided with threads so that the electric heater 18 can be conveniently connected to the high-temperature and high-pressure resistant water storage tank 1.
And a polytetrafluoroethylene sealing gasket is arranged between the connecting rod 23 and the thread sleeve seat 24.
The stainless steel plate type heat exchanger 5 is connected with cooling water.
A cooling coil 25 is arranged in the sampling device 11, and cooling water is introduced into the cooling coil.
Power inlet wire circuit breaker 21 has the earth leakage protection function among power and the temperature control box 19, and relay 22 sets for the temperature disconnection or close according to temperature controller 20.
The beneficial effects of the utility model reside in that: the dynamic simulation test device of the utility model has reliable performance and easy manufacture, and the measurement method is easy to implement and can meet the ultra-high temperature test condition; the method can test the average corrosion rate of the carbon steel pipeline in a certain period in the long-term operation process, and can also test the water quality change of circulating water in the test process.
Drawings
FIG. 1 is a schematic structural diagram of the device of the present invention;
FIG. 2 is a schematic structural view of a high temperature and high pressure resistant water storage tank of the present invention;
FIG. 3 is a schematic structural view of a power supply and a temperature control box according to the present invention;
fig. 4 is a schematic structural diagram of the middle sampling device of the present invention.
Shown in the figure: the device comprises a high-temperature and high-pressure resistant water storage tank 1, a circulating water pump 2, a water outlet control valve 3, a high-temperature resistant flowmeter 4, a stainless steel plate type heat exchanger 5, a corrosion coupon device 6, a return water control valve 7, a flow regulating valve 8, a device water drain valve 9, a sampling control valve 10, a sampling device 11, a pipeline exhaust valve 12, a nonmetal coupon frame 13, a carbon steel test piece 14, a temperature sensor 15, a top water injection valve 16, a pointer type pressure gauge 17, an electric heater 18, a power supply and temperature control box 19, a temperature controller 20, a power supply inlet wire breaker 21, a relay 22, a connecting rod 23, a screw sleeve seat 24 and a cooling coil pipe 25.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
A dynamic simulation test device for evaluating the performance of an ultra-high temperature scale and corrosion inhibitor of circulating water of a heat supply network completely meets the requirements of pressure, temperature and flow of an ultra-high temperature simulation test of the circulating water of the heat supply network. As shown in fig. 1: the dynamic simulation test device comprises a high-temperature and high-pressure resistant water storage tank 1, the outlet of the high-temperature and high-pressure resistant water storage tank 1 is divided into two paths, a water drain valve 9 is arranged on one path, the other path is communicated with a port on the hot water inlet side of a stainless steel plate type heat exchanger 5 simulating the operation state of a plate type heat exchanger of a heat network circulating water system through a connecting pipeline, and a circulating water pump 2, an outlet control valve 3 and a high-temperature resistant flowmeter 4 are sequentially arranged on the connecting pipeline; the hot water outlet side interface of the stainless steel plate type heat exchanger 5 is connected with the bottom interface of the corrosion hanging piece device 6; an upper interface of the corrosion hanging piece device 6 is communicated with an inlet of the high-temperature and high-pressure resistant water storage tank 1 through a connecting pipeline, and a pipeline exhaust valve 12 and a return water control valve 7 are arranged on the connecting pipeline; the pipeline between the water outlet control valve 3 and the high temperature resistant flowmeter 4 is communicated with the inlet of the high temperature and high pressure resistant water storage tank 1 through a pipeline, a flow regulating valve 8 is arranged on the pipeline, a branch is arranged on the pipeline between the circulating water pump 2 and the water outlet control valve 3, a sampling control valve 10 and a sampling device 11 are arranged on the branch, and the high temperature and high pressure resistant water storage tank 1 is connected with a power supply and a temperature control box 19.
A non-metal sample hanging frame 13 is arranged in the corrosion hanging piece device 6, and a carbon steel test piece 14 is hung on the non-metal sample hanging frame 13.
As shown in fig. 2, the high-temperature and high-pressure resistant water storage tank 1 is a steel cylindrical autoclave, and a top water injection valve 16 and a pointer pressure gauge 17 are connected to an opening at the top of the high-temperature and high-pressure resistant water storage tank 1 through welding; a hole is formed in the side surface of the high-temperature and high-pressure resistant water storage tank 1, and the connecting rod 23 is connected to the high-temperature and high-pressure resistant water storage tank 1 through a welding screw sleeve seat 24; the side surface of the high-temperature and high-pressure resistant water storage tank 1 is provided with a hole and is connected with a temperature sensor 15 through welding; the bottom and the top of the high-temperature and high-pressure resistant water storage tank 1 are provided with holes which are connected with a circulating water pump 2 and a return water control valve 7 through welded stainless steel pipelines. The connecting rod 23 is connected to the high-temperature and high-pressure resistant water storage tank 1 through the thread sleeve seat 24, and the connecting rod is provided with threads so that the electric heater can be conveniently connected to the high-temperature and high-pressure resistant water storage tank 1. And a polytetrafluoroethylene sealing gasket is arranged between the connecting rod 23 and the thread sleeve seat 24.
As shown in fig. 4, a power inlet circuit breaker 21, a relay 22 and a temperature controller 20 are arranged in the power and temperature control box 19, the temperature controller 20 is connected with the temperature sensor 15, and the relay 22 is connected with the electric heater 18.
As shown in fig. 4, a cooling coil 25 is provided in the sampling device 11, and cooling water is introduced into the cooling coil.
The utility model discloses a working process does: opening a top water injection valve 16 to inject heat supply network circulating water into a high-temperature and high-pressure resistant water storage tank, opening an electric heater 18, setting the temperature of a temperature controller 20 to 130 ℃, opening a water outlet control valve 3, opening a return water control valve 7, opening a pipeline exhaust valve 12, closing the pipeline exhaust valve 12 after water is discharged when a connecting pipeline is filled with water, closing the top water injection valve 16, starting a circulating water pump 2, adjusting the flow by adjusting the opening of a flow adjusting valve 8, and starting a test after checking that the pressure, the temperature and the flow meet. In the test process, the sampling control valve 10 can be opened to sample circulating water, and the circulating water enters the sampling device 11 to be cooled to test the change of the quality of the circulating water; after the test is finished, the average corrosion rate of the carbon steel test piece in the test period can be calculated by a weight loss method. The blank test is that no ultrahigh-temperature scale and corrosion inhibitor is added into the circulating water, and the chemical feeding test is that the ultrahigh-temperature scale and corrosion inhibitor is added into the circulating water. The performance of the scale and corrosion inhibitor is evaluated by comparing the change of water quality of two groups of tests with the corrosion rate of a carbon steel test piece.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (8)
1. A dynamic simulation test device for evaluating the performance of an antisludging corrosion inhibitor of an ultrahigh-temperature heat supply network is characterized in that:
the dynamic simulation test device comprises a high-temperature and high-pressure resistant water storage tank (1), an outlet of the high-temperature and high-pressure resistant water storage tank (1) is divided into two paths, a water drain valve (9) is arranged on one path, the other path is communicated with a hot water inlet side interface of a stainless steel plate type heat exchanger (5) for simulating the running state of a plate type heat exchanger of a heat network circulating water system through a connecting pipeline, and a circulating water pump (2), a water outlet control valve (3) and a high-temperature resistant flowmeter (4) are sequentially arranged on the connecting pipeline; a hot water outlet side interface of the stainless steel plate type heat exchanger (5) is connected with a bottom interface of the corrosion hanging piece device (6); an upper interface of the corrosion hanging piece device (6) is communicated with an inlet of the high-temperature and high-pressure resistant water storage tank (1) through a connecting pipeline, and a pipeline exhaust valve (12) and a backwater control valve (7) are arranged on the connecting pipeline; a pipeline between the water outlet control valve (3) and the high-temperature-resistant flowmeter (4) is communicated with an inlet of the high-temperature-resistant high-pressure water storage tank (1) through a pipeline, a flow regulating valve (8) is arranged on the pipeline, a branch is arranged on the pipeline between the circulating water pump (2) and the water outlet control valve (3), a sampling control valve (10) and a sampling device (11) are arranged on the branch, and the high-temperature-resistant high-pressure water storage tank (1) is connected with a power supply and a temperature control box (19);
a non-metal sample hanging rack (13) is arranged in the corrosion sample hanging device (6), and a carbon steel test piece (14) is hung on the non-metal sample hanging rack (13);
the high-temperature and high-pressure resistant water storage tank (1) is provided with an electric heater (18), a top water injection valve (16), a temperature sensor (15) and a pointer pressure gauge (17);
set up power inlet wire circuit breaker (21), relay (22) and temperature controller (20) that are connected in power and temperature control case (19), temperature sensor (15) are connected in temperature controller (20), and electric heater (18) are connected in relay (22).
2. The dynamic simulation test device for evaluating the performance of the scale and corrosion inhibitor of the ultra-high temperature heat supply network according to claim 1, which is characterized in that: the connecting pipeline is a stainless steel pipeline, and a heat-insulating layer is arranged outside the connecting pipeline.
3. The dynamic simulation test device for evaluating the performance of the scale and corrosion inhibitor of the ultra-high temperature heat supply network according to claim 1, which is characterized in that: the high-temperature and high-pressure resistant water storage tank (1) is a steel cylindrical autoclave, and a hole in the top of the high-temperature and high-pressure resistant water storage tank (1) is connected with a top water injection valve (16) and a pointer pressure gauge (17) through welding; a hole is formed in the side surface of the high-temperature and high-pressure resistant water storage tank (1) and is connected with a screw sleeve seat (24) through welding, and an electric heater (18) is connected to the screw sleeve seat (24) through a connecting rod (23); a hole is formed in the side surface of the high-temperature and high-pressure resistant water storage tank (1) and is connected with a temperature sensor (15) through welding; the bottom and the top of the high-temperature and high-pressure resistant water storage tank (1) are provided with holes and are connected with a circulating water pump (2) and a backwater control valve (7) through a welded stainless steel connecting pipeline.
4. The dynamic simulation test device for evaluating the performance of the scale and corrosion inhibitor of the ultra-high temperature heat supply network according to claim 3, characterized in that: the connecting rod (23) is provided with threads so that the electric heater (18) can be conveniently connected to the high-temperature and high-pressure resistant water storage tank (1).
5. The dynamic simulation test device for evaluating the performance of the scale and corrosion inhibitor of the ultra-high temperature heat supply network according to claim 3, characterized in that: and a polytetrafluoroethylene sealing gasket is arranged between the connecting rod (23) and the thread sleeve seat (24).
6. The dynamic simulation test device for evaluating the performance of the scale and corrosion inhibitor of the ultra-high temperature heat supply network according to claim 1, which is characterized in that: the stainless steel plate type heat exchanger (5) is connected with cooling water.
7. The dynamic simulation test device for evaluating the performance of the scale and corrosion inhibitor of the ultra-high temperature heat supply network according to claim 1, which is characterized in that: and a cooling coil (25) is arranged in the sampling device (11), and cooling water is introduced into the cooling coil.
8. The dynamic simulation test device for evaluating the performance of the scale and corrosion inhibitor of the ultra-high temperature heat supply network according to claim 1, which is characterized in that: power inlet wire circuit breaker (21) has the earth leakage protection function in power and temperature control box (19), and relay (22) are according to temperature controller (20) settlement temperature disconnection or closure.
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| CN202120542917.XU CN214584791U (en) | 2021-03-16 | 2021-03-16 | A dynamic simulation test device for performance evaluation of ultra-high temperature thermal network scale and corrosion inhibitor |
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| CN202120542917.XU CN214584791U (en) | 2021-03-16 | 2021-03-16 | A dynamic simulation test device for performance evaluation of ultra-high temperature thermal network scale and corrosion inhibitor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115541485A (en) * | 2022-10-21 | 2022-12-30 | 西安热工研究院有限公司 | A thermal power plant shutdown protective agent maintenance effect evaluation device and using method |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115541485A (en) * | 2022-10-21 | 2022-12-30 | 西安热工研究院有限公司 | A thermal power plant shutdown protective agent maintenance effect evaluation device and using method |
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