CN210662800U - Reheater pipeline system and boiler - Google Patents
Reheater pipeline system and boiler Download PDFInfo
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- CN210662800U CN210662800U CN201921583630.0U CN201921583630U CN210662800U CN 210662800 U CN210662800 U CN 210662800U CN 201921583630 U CN201921583630 U CN 201921583630U CN 210662800 U CN210662800 U CN 210662800U
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Abstract
The utility model discloses a reheater pipeline system, which comprises a reheater, a first pipeline, a drain pipeline, a temperature-reducing water inlet pipeline and a second pipeline; the first pipeline is communicated with a first communication port of the reheater through a first valve, the temperature-reducing water supply pipeline is communicated with the first pipeline, and a second valve and a third valve are arranged on the temperature-reducing water supply pipeline in series; the first end of the second pipeline is communicated with the drain pipeline, and the communication position of the first end and the second end is positioned between the fourth valve and the first communication port; the second end of the second pipeline is communicated with the temperature-reducing water inlet pipeline, the communication position of the second end of the second pipeline and the temperature-reducing water inlet pipeline is located between the second valve and the third valve, and the second pipeline is provided with a fifth valve. The scheme can solve the problems that potential safety hazards exist after the hydraulic test of the reheater and the workload of workers is large in the background art. The utility model discloses still disclose a boiler.
Description
Technical Field
The utility model relates to a boiler overhauls technical field, especially relates to a reheater pipe-line system and boiler.
Background
In order to improve the cycle thermal efficiency of a boiler unit in a thermal power plant, an intermediate reheating cycle mode is widely adopted at present. Specifically, after main steam coming out of a superheater expands in a high-pressure cylinder of a steam turbine to do work, part of the steam is transmitted to a reheater, the steam in the reheater is reheated to increase the temperature, and then the heated steam is sent to an intermediate pressure cylinder of the steam turbine to continue to expand to do work, the process is generally called as an intermediate reheating cycle, and generally, the thermal efficiency of the cycle can be relatively improved by 4-5% through the intermediate reheating cycle. In some large units, steam expanded to do work in the intermediate pressure cylinder is sent to the reheater again to be heated, the process is generally called as two intermediate reheating cycles, and the two intermediate reheating cycles can relatively improve the thermal efficiency of the cycle by about 2% on the basis of one intermediate reheating cycle. Individual boiler trains even employ three intermediate reheat cycles.
However, in actual operation of the boiler, the reheater needs to be inspected, and therefore, in order to test the reliability of the inspected reheater, a hydraulic test, which is a main means for checking the tightness of the reheater and the piping thereof, is required. At present, the method for increasing the temporary water pressure pipeline is generally adopted in the domestic hydraulic test for detecting the reliability of the reheater, namely, after the water is fed to the reheater through the water feeding pump and the temporary assembly pipeline, the water in the reheater is boosted through the control booster pump, after the hydraulic test is completed, the temporarily assembled pipeline needs to be dismantled, the resource waste is caused, the workload of workers is large, meanwhile, the pipeline is frequently disassembled and assembled, certain damage can be caused to the reheater, and therefore potential safety hazards exist in the reheater.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a reheater pipe-line system and boiler to solve in the background art the reheater have potential safety hazard and the great problem of staff's work load behind hydrostatic test.
In order to solve the problem, the utility model discloses a following technical scheme:
a reheater pipeline system comprises a reheater, a first pipeline, a drain pipeline, a temperature-reducing water-supply pipeline and a second pipeline; wherein:
the first pipeline is communicated with a first communication port of the reheater through a first valve, the temperature-reduced water supply pipeline is communicated with the first pipeline, and a second valve and a third valve are arranged on the temperature-reduced water supply pipeline in series;
the drain pipeline is communicated with the first communication port of the reheater, a fourth valve is arranged on the drain pipeline in series, the first end of the second pipeline is communicated with the drain pipeline, and the communication position of the first end of the second pipeline and the communication position of the second end of the second pipeline is located between the fourth valve and the first communication port;
and the second end of the second pipeline is communicated with the temperature-reducing water inlet pipeline, the communication position of the second end of the second pipeline and the temperature-reducing water inlet pipeline is positioned between the second valve and the third valve, and the second pipeline is provided with a fifth valve.
Preferably, in the above reheater pipe system, the reheater pipe system further includes a third pipe, and the third pipe is communicated with the second communication port of the reheater.
Preferably, in the reheater piping system, the temperature-reduced water supply pipeline includes a first sub water supply pipeline and a second sub water supply pipeline, one end of the first sub water supply pipeline is communicated with one end of the second sub water supply pipeline, the other end of the first sub water supply pipeline is communicated with the first pipeline, the second valve and the third valve are both serially connected to the first sub water supply pipeline, the other end of the second sub water supply pipeline is communicated with the third pipeline, and a sixth valve is disposed on the second sub water supply pipeline.
Preferably, in the reheater pipeline system, the drain pipeline includes a first subsection, a second subsection and a third subsection;
the fourth valve is arranged on the second subsection, a seventh valve is arranged on the first subsection, and an eighth valve is arranged on the third subsection;
one end of the first subsection is communicated with the first communication port of the reheater, the other end of the first subsection is communicated with one end of the second subsection, the second subsection is communicated with one end of the third subsection, the communication position of the second subsection and the third subsection is located between the four valve and the seventh valve, and the other end of the third subsection is communicated with the second communication port of the reheater.
Preferably, in the reheater piping system, the seventh valve and the eighth valve each include a hydraulic valve and a first cut-off valve, and the hydraulic valve is connected in series with the first cut-off valve.
Preferably, in the reheater pipe system, the reheater pipe system further includes a drain container, and the drain container is communicated with the drain pipe.
Preferably, in the reheater piping system, the first valve is a hydraulic block valve.
Preferably, in the reheater piping system, the second valve and the third valve are sequentially disposed in the desuperheated water supply pipeline along a water flow direction of the desuperheated water in the desuperheated water supply pipeline, the second valve includes an electromagnetic valve, a second stop valve and an electric valve, and the electromagnetic valve, the electric valve and the second stop valve are connected in series.
Preferably, in the reheater line system, the fifth valve includes at least two third stop valves, and at least two of the third stop valves are connected in series.
Based on above-mentioned reheater pipe-line system mouth that discloses, the utility model discloses still disclose a boiler, include: a burner port as claimed in any one of the preceding claims.
The utility model discloses a reheater pipe-line system's technological effect as follows:
the embodiment of the utility model discloses among the reheater pipe-line system, the intercommunication sets up the second pipeline between desuperheating water pipeline and the drain line, sets up the fifth valve simultaneously on the second pipeline, sets up the third valve on desuperheating water pipeline. When the reheater is subjected to a hydraulic test, the third valve is closed, the fifth valve is opened, and test water can enter the reheater sequentially through a part of the temperature-reducing water supply pipeline, the second pipeline and a part of the drain pipeline, so that the hydraulic test of the reheater is realized. When the reheater normally works, the fifth valve is closed, the third valve is opened, and the working process of the reheater pipeline system at the moment is the same as that of the reheater pipeline system in the prior art, so that the normal work of the reheater is realized. In combination with the above two points, the embodiment of the utility model discloses a reheater pipe-line system can enough realize the normal work of reheater, can also realize the hydraulic test of reheater, can avoid demolising the pipeline of interim constitution and cause the great problem of wasting of resources and staff's work load after accomplishing hydraulic test, meanwhile, this reheater pipe-line system need not to carry out frequent dismouting to the pipeline to can avoid the reheater to have the potential safety hazard, and then improve the reliability of reheater.
It is thus clear that compare in the background art reheater pipe-line system, the embodiment of the utility model discloses a reheater pipe-line system can solve the reheater betterly and have potential safety hazard and the great problem of staff's work load behind hydraulic test.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present invention, the drawings used in the description of the embodiments or the background art will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic diagram of a reheater piping system according to an embodiment of the present invention.
Description of reference numerals:
100-a reheater;
200-a first conduit;
300-a hydrophobic pipeline, 310-a first subsection, 320-a second subsection, 330-a third subsection;
400-a temperature-reducing water supply pipeline, 410-a first sub water supply pipeline and 420-a second sub water supply pipeline;
500-a second conduit;
610-a first valve, 620-a second valve, 621-an electromagnetic valve, 622-a second stop valve, 623-an electric valve, 630-a third valve, 640-a fourth valve, 650-a fifth valve, 651-a third stop valve, 660-a sixth valve, 670-a seventh valve, 671-a hydraulic valve, 672-a first stop valve, 680-an eighth valve;
700-third line;
800-hydrophobic container.
Detailed Description
To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in 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 technical solutions disclosed in the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Referring to fig. 1, a reheater piping system is disclosed, the disclosed reheater piping system including a reheater 100, a first pipe 200, a drain pipe 300, a reduced-temperature water supply pipe 400, and a second pipe 500.
The reheater 100 is a core component of the reheater piping system, the reheater 100 is substantially a steam heater that reheats the low-pressure steam that has performed work to a certain temperature, and the reheater 100 can further improve the thermal efficiency of the power plant cycle and control the steam temperature of the last stage blade of the steam turbine within an allowable range. Specifically, the reheater 100 includes a reheater base body, a low reentry header and a hot reentry header, and low-pressure steam that has passed through the steam turbine and performed work first enters the low reentry header and is reheated in the reheater base body, and the heated steam may enter the steam turbine again through the hot reentry header to perform work.
The first pipe line 200 is communicated with the first communication port of the reheater 100 through the first valve 610, the reheater 100 can be communicated with the first reheat cold end through the first pipe line 200, and the low-pressure steam at the first reheat cold end can enter the reheater 100 through the first pipe line 200, so as to be reheated.
The drain line 300 is communicated with the first communication port of the reheater 100, the drain line 300 is provided with the fourth valve 640 in series, and after the hydraulic test of the reheater 100 is completed, the test water for the hydraulic test in the reheater 100 can flow out through the drain line 300. Specifically, when the hydraulic test is performed, the fourth valve 640 is closed, after the hydraulic test is completed, when the test water in the reheater 100 is discharged, the fourth valve 640 is opened, and when the reheater 100 normally operates, the fourth valve 640 is closed.
The desuperheating water upper water pipeline 400 is communicated with the first pipeline 200, and the second valve 620 and the third valve 630 are arranged on the desuperheating water upper water pipeline 400 in series, so that the desuperheating water can enter the first pipeline 200 through the desuperheating water upper water pipeline 400, thereby being mixed with the steam or water at the first reheating cold end, through controlling the flow of the desuperheating water, the temperature of the steam or water entering the reheater 100 can be controlled, so that the temperature of the steam or water entering the reheater is relatively constant, and the heating amount of the steam or water in the reheater 100 is relatively stable, therefore, the temperature of the outlet water or the steam of the reheater 100 can be ensured by the inlet water or the steam with relatively constant temperature, so that the secondary steam entering the steam turbine can do work relatively stably, so that the steam turbine can be output stably. In a preferred embodiment, the desuperheater water inlet pipeline 400 may be communicated with the first pipeline 200 through a desuperheater, which may further simplify the temperature control manner, and reduce the temperature error, so that the temperature of the steam or water entering the reheater is more constant.
The first end of the second pipeline 500 is communicated with the drain pipeline 300, the communication position of the first end and the drain pipeline is located between the fourth valve 640 and the first communication port, the second end of the second pipeline 500 is communicated with the chilled water inlet pipeline 400, the communication position of the second end and the chilled water inlet pipeline is located between the second valve 620 and the third valve 630, and the fifth valve 650 is arranged on the second pipeline 500. In a more preferable embodiment, the material of any of the pipelines may be 15CrMo, since 15CrMo is heat-resistant steel.
When the hydraulic test is performed, along the water flow direction of the desuperheating water in the desuperheating water upper water pipeline 400, the valve closer to the first pipeline 200 in the second valve 620 and the third valve 630 is closed, the fifth valve 650 is opened, the test water sequentially passes through the desuperheating water upper water pipeline 400, the second pipeline 500 and the drain pipeline 300 and then enters the reheater 100, and then the hydraulic test is performed; after the hydraulic test is completed, the test water in the reheater 100 needs to be discharged, at this time, the fifth valve 650 is closed, the fourth valve 640 is opened, and the test water in the reheater 100 can be discharged through the drain line 300; when the entire reheater pipe system needs to work normally, the valve closer to the first pipe 200 in the second valve 620 and the third valve 630 is opened, and the fifth valve 650 is closed, and at this time, the working process of the reheater pipe system is the same as that of the reheater pipe system in the prior art, so that the normal work of the reheater is realized.
The embodiment of the utility model discloses in the reheater pipe-line system, the intercommunication sets up second pipeline 500 between desuperheated water pipeline 400 and the hydrophobic pipeline 300, sets up fifth valve 650 simultaneously on second pipeline 500, sets up third valve 630 on desuperheated water pipeline 400. When the reheater 100 is hydraulically tested, the third valve 630 is closed, and the fifth valve 650 is opened, so that the test water can sequentially enter the reheater 100 through the portion of the chilled water supply pipeline 400, the second pipeline 500, and the portion of the drain pipeline 300, thereby implementing the hydraulic test of the reheater 100. When the reheater 100 is working normally, the fifth valve 650 is closed, and the third valve 630 is opened, and the working process of the reheater pipe system is the same as that of the reheater pipe system in the prior art, so as to achieve the normal working of the reheater 100. In combination with the above two points, the embodiment of the utility model discloses a reheater pipe-line system can enough realize reheater 100's normal work, can also realize reheater 100's hydrostatic test, can avoid demolising the pipeline of interim constitution and cause the great problem of wasting of resources and staff's work load after accomplishing hydrostatic test, meanwhile, this reheater pipe-line system need not to carry out frequent dismouting to the pipeline to can avoid the reheater to have the potential safety hazard, and then improved reheater 100's reliability.
It is thus clear that compare in the background art reheater pipe-line system, the embodiment of the utility model discloses a reheater pipe-line system can solve the reheater betterly and have potential safety hazard and the great problem of staff's work load behind hydraulic test.
Generally, there are a plurality of ports of the reheater 100. Based on this, in a preferred scheme, the reheater pipeline system may further include a third pipeline 700, the third pipeline 700 is communicated with a second communication port of the reheater 100, the third pipeline 700 has a similar function to the first pipeline 200, the reheater 100 may be communicated with the second reheating cold end through the first pipeline 200, low-pressure steam at the second reheating cold end may enter the reheater 100 through the third pipeline 700, such a scheme enables one reheater 100 to simultaneously cooperate with at least two reheating cold ends, further improves the cycle thermal efficiency of the boiler unit in the thermal power plant, and simultaneously enables the application range of the reheater 100 to be wider.
As described above, the reheater piping system may further include the third piping 700, the third piping 700 is communicated with the second communication port of the reheater 100, in order to control the temperature of the steam or water entering the reheater 100 through the third piping 700, so that the steam or water can enter the reheater 100 at a relatively constant temperature, in a preferred embodiment, the reduced-temperature feedwater piping 400 may include the first sub-feedwater piping 410 and the second sub-feedwater piping 420, one end of the first sub-feedwater piping 410 is communicated with one end of the second sub-feedwater piping 420, the other end of the first sub-feedwater piping 410 is communicated with the first piping 200, and the second valve 620 and the third valve 630 may be serially disposed on the first sub-feedwater piping 410, the other end of the second sub-feedwater piping 420 is communicated with the third piping 700, the second sub-feedwater piping 420 is disposed with the sixth valve 660, this scheme makes steam or the ability of second reheat cold end enter into reheater 100 with comparatively stable temperature equally, and its beneficial effect is the same with first reheat cold end, considers that the text is succinct, no longer gives details here.
Similarly, the reheater 100 has a second communication port, in order to increase the water discharge rate of the test water in the hydraulic test process and the water discharge rate when the test water in the reheater 100 is discharged after the hydraulic test is completed, in a preferred embodiment, the drain line 300 may include a first subsection 310, a second subsection 320 and a third subsection 330, the fourth valve 640 may be disposed in the second subsection 320, the first subsection 310 may be provided with a seventh valve 670, and the third subsection 330 may be provided with an eighth valve 680; one end of the first subsection 310 is communicated with a first communication port of the reheater 100, the other end of the first subsection 310 is communicated with one end of the second subsection 320, the other end of the second subsection 320 is communicated with one end of the third subsection 330, the communication position of the four valve 640 and the seventh valve 670 is located, and the other end of the third subsection 330 is communicated with a second communication port of the reheater 100.
In general, when performing the hydraulic test, the hydraulic test needs to be performed on the reheater 100 alone, and therefore, the seventh valve 670 and the eighth valve 680 need to be closed when the test water in the reheater 100 reaches the test water pressure, and since the water pressure in the pipeline is high at this time, it is inconvenient to manually close the seventh valve 670 and the eighth valve 680, and it is difficult to close the seventh valve and the eighth valve. Based on this, in a preferable scheme, the seventh valve 670 and the eighth valve 680 may each include a liquid valve 671, and the liquid valves 671 may be convenient for a user to operate, and may also implement remote automatic operation, and particularly, when manual operation or normally open operation is inconvenient in a severe environment, the seventh valve and the eighth valve are configured to operate with an automatic computer, and may be used for automatic operation and centralized control. Meanwhile, the hydraulic valve 671 has the advantages of small opening force, capability of breaking scaling obstacles during closing, good sealing performance and the like.
However, the hydraulic valve 671 is troublesome to install and is prone to leakage. Therefore, in a more preferable embodiment, the seventh valve 670 and the eighth valve 680 further include a first cut-off valve 672, the hydraulic valve 671 is connected in series with the first cut-off valve 672, and the first cut-off valve 672 further improves the reliability of the seventh valve 670 and the eighth valve 680 to avoid undesirable phenomena such as leakage.
The embodiment of the utility model provides an in, the reheater pipe-line system can also include hydrophobic container 800, hydrophobic container 800 and hydrophobic pipeline 300 intercommunication, after hydrostatic test accomplishes, the test water in reheater 100 discharges through hydrophobic pipeline 300, and hydrophobic container 800 can be arranged in collecting the test water of discharging from hydrophobic pipeline 300, can avoid appearing the indiscriminate phenomenon of arranging of test water, meanwhile, can also reuse collecting the test water in hydrophobic container 800, reach the purpose of using water wisely.
As described above, the first pipeline 200 is communicated with the first communication port of the reheater 100 through the first valve 610, in order to avoid that the test water in the reheater 100 flows back to the first pipeline 200 through the first water inlet when the hydraulic test is performed, in a preferred embodiment, the first valve 610 may be a hydraulic block valve, a hydraulic threshold of the hydraulic block valve is greater than a hydraulic value during the hydraulic test, so that when the hydraulic test is performed, the test water can be prevented from flowing back to the first pipeline 200 through the first water inlet to affect the hydraulic test, and further reliability of the hydraulic test is improved.
At present, when a hydraulic test is carried out, the increase of the water pressure of test water is generally realized by arranging a water pressure booster pump on a temporarily built pipeline. Based on this, in a preferred scheme, along the water flow direction of the desuperheating water in the desuperheating water pipeline 400, the second valve 620 and the third valve 630 can be sequentially arranged in the desuperheating water pipeline 400, meanwhile, the second valve 620 can include an electromagnetic valve 621, a second stop valve 622 and an electric valve 623, the electromagnetic valve 621, the electric valve 623 and the second stop valve 622 are connected in series, the electromagnetic valve 621 can play a role in opening and closing, the second stop valve 622 can further improve the reliability of the second valve 620, the specific function of the second stop valve 622 is the same as that of the first stop valve 672, and details are not described herein. The control of the water pressure is realized by controlling the electric valve 623.
In a more preferable scheme, the sixth valve 660 may also include an electromagnetic valve 621, a second stop valve 622, and an electric valve 623, where the electromagnetic valve 621, the electric valve 623, and the second stop valve 622 are connected in series, and the beneficial effects thereof are the same as those of the second valve 620, and for brevity of text, no further description is given here.
Specifically, in order to ensure the stability and reliability of the pipeline switching during the hydrostatic test and the normal operation, in a preferred scheme, the fifth valve 650 may include at least two third stop valves 651, and the at least two third stop valves 651 are connected in series, and the at least two third stop valves 651 can ensure the reliability of the fifth valve 650, thereby avoiding the situation that the fifth valve 650 leaks water during the use process, which causes a serious problem in the whole reheater pipeline system, and therefore, the scheme can improve the reliability of the whole reheater pipeline system. In a more preferred embodiment, the third valve 630 may also include at least two shut-off valves.
Of course, in order to improve the tightness of each valve, all valves herein may be provided with at least two stop valves or gate valves, and the embodiments of the present invention are not limited thereto.
Based on the embodiment of the utility model discloses the reheater pipe-line system, the embodiment of the utility model provides a still disclose a boiler, disclosed boiler includes arbitrary embodiment of the above reheater pipe-line system.
In the present specification, the respective preferred embodiments are only described with emphasis on differences from other embodiments, and the respective preferred embodiments may be arbitrarily combined as long as they do not conflict with each other, and the embodiments formed by combining are also within the scope disclosed in the present specification.
The above description is only exemplary of the invention, and is intended to enable those skilled in the art to understand and implement the invention. Various combinations of these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A reheater line system comprising a reheater (100), a first line (200), a drain line (300), a desuperheated hot water line (400), and a second line (500); wherein:
the first pipeline (200) is communicated with a first communication port of the reheater (100) through a first valve (610), the temperature-reduced water inlet pipeline (400) is communicated with the first pipeline (200), and a second valve (620) and a third valve (630) are arranged on the temperature-reduced water inlet pipeline (400) in series;
the drain pipeline (300) is communicated with the first communication port of the reheater (100), a fourth valve (640) is arranged on the drain pipeline (300) in series, a first end of the second pipeline (500) is communicated with the drain pipeline (300), and the communication position of the fourth valve (640) and the first communication port is located between the fourth valve (640) and the first communication port;
the second end of the second pipeline (500) is communicated with the temperature-reduced water inlet pipeline (400), the communication position of the second end and the temperature-reduced water inlet pipeline is located between the second valve (620) and the third valve (630), and a fifth valve (650) is arranged on the second pipeline (500).
2. A reheater circuit system according to claim 1, characterised in that the reheater circuit system further comprises a third circuit (700), said third circuit (700) being in communication with a second communication port of the reheater (100).
3. A reheater piping system according to claim 2, wherein said chilled water supply line (400) comprises a first sub water supply line (410) and a second sub water supply line (420), one end of said first sub water supply line (410) is connected to one end of said second sub water supply line (420), the other end of said first sub water supply line (410) is connected to said first pipe (200), and said second valve (620) and said third valve (630) are both connected in series to said first sub water supply line (410), the other end of said second sub water supply line (420) is connected to said third pipe (700), and said second sub water supply line (420) is provided with a sixth valve (660).
4. The reheater piping system according to claim 1, characterized in that said hydrophobic piping (300) comprises a first subsection (310), a second subsection (320) and a third subsection (330);
the fourth valve (640) is arranged on the second subsection (320), the first subsection (310) is provided with a seventh valve (670), and the third subsection (330) is provided with an eighth valve (680);
one end of the first subsection (310) is communicated with the first communication port of the reheater (100), the other end of the first subsection (310) is communicated with one end of the second subsection (320), the second subsection (320) is communicated with one end of the third subsection (330), the communication position of the second subsection and the second subsection is located between the four valve (640) and the seventh valve (670), and the other end of the third subsection (330) is communicated with the second communication port of the reheater (100).
5. A reheater piping system according to claim 4 wherein said seventh valve (670) and said eighth valve (680) each comprise a hydraulic valve (671) and a first shut-off valve (672), said hydraulic valve (671) being in series with said first shut-off valve (672).
6. The reheater piping system of claim 1 further comprising a hydrophobic vessel (800), said hydrophobic vessel (800) being in communication with said hydrophobic piping (300).
7. The reheater piping system of claim 1 wherein said first valve (610) is a hydraulic block valve.
8. A reheater piping system according to claim 1, characterized in that along the water flow direction of the desuperheated water in the desuperheated water supply pipeline (400), the second valve (620) and the third valve (630) are sequentially arranged on the desuperheated water supply pipeline (400), the second valve (620) comprises a solenoid valve (621), a second stop valve (622) and an electric valve (623), and the solenoid valve (621), the electric valve (623) and the second stop valve (622) are connected in series.
9. The reheater piping system of claim 1 wherein said fifth valve (650) comprises at least two third shut-off valves (651), and wherein at least two of said third shut-off valves (651) are connected in series.
10. A boiler, characterized in that it comprises:
the reheater piping system of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921583630.0U CN210662800U (en) | 2019-09-23 | 2019-09-23 | Reheater pipeline system and boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921583630.0U CN210662800U (en) | 2019-09-23 | 2019-09-23 | Reheater pipeline system and boiler |
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| Publication Number | Publication Date |
|---|---|
| CN210662800U true CN210662800U (en) | 2020-06-02 |
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| CN201921583630.0U Active CN210662800U (en) | 2019-09-23 | 2019-09-23 | Reheater pipeline system and boiler |
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| CN (1) | CN210662800U (en) |
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2019
- 2019-09-23 CN CN201921583630.0U patent/CN210662800U/en active Active
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