CN214500903U - Reheater temperature-reducing water pipeline additionally-installed drainage device - Google Patents
Reheater temperature-reducing water pipeline additionally-installed drainage device Download PDFInfo
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- CN214500903U CN214500903U CN202120372154.9U CN202120372154U CN214500903U CN 214500903 U CN214500903 U CN 214500903U CN 202120372154 U CN202120372154 U CN 202120372154U CN 214500903 U CN214500903 U CN 214500903U
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Abstract
The utility model provides a reheater desuperheating water pipeline installs drainage device additional, it is provided with the valve back blow-off pipe on the desuperheating water total advances the pipe, be provided with first stop valve on the desuperheating water total advances the pipe, first stop valve and regulation desuperheating water pipe intercommunication, the blow-off pipe setting is between first stop valve and regulation desuperheating water pipe behind the valve, be provided with electrical control valve and second stop valve on the regulation desuperheating water pipe, regulation desuperheating water pipe and regulation desuperheating water import header tank intercommunication, regulation desuperheating water import header tank is through adjusting desuperheating water shower head and regulation desuperheating water export header tank intercommunication, the intercommunication has the regulation desuperheating drain pipe on the regulation desuperheating water pipe, it sets up between second stop valve and regulation desuperheating water import header tank to adjust the desuperheating water drain pipe, it passes through drain pipe intercommunication behind drain main and the valve to adjust the desuperheating water drain pipe, reheater water pressure test cold section shutoff valve sets up on the outlet pipe of regulation desuperheating water import header tank.
Description
Technical Field
The utility model belongs to the technical field of heat exchange equipment in the boiler, a reheater technique in the boiler is related to, specifically install hydrophobic means additional for reheater desuperheating water pipeline.
Background
The reheater steam temperature is adjusted mainly by adopting a baffle temperature adjusting mode, the opening of the baffle is adjusted by controlling the flue gas adjusting baffle in the tail superheater and the reheater flue and utilizing the proportional relation between the flue gas flow and the reheated steam outlet temperature, so that the flue gas flow passing through the reheater side and the superheater side is controlled, and the purpose of adjusting the reheated steam temperature is achieved. The proportion of the flue gas flowing through the reheater side is increased along with the reduction of the boiler load, and the reheated steam temperature is maintained as a rated value within a certain load range; meanwhile, an accident water spray temperature reduction device is arranged on an inlet pipeline of the reheated steam and used for controlling the temperature of the reheated steam in an emergency state.
After the boiler overhauls the heating surface each time, hydraulic test is carried out on the reheater system, and the quality of the pressure-bearing part is guaranteed. After a hydraulic test is performed on a reheater at each time, accumulated water in a reheater system cannot be discharged completely, the accumulated water in a pipeline flows into a side pipeline of a steam turbine after a blind plate valve is detached, the temperature of reheated steam is sharply reduced in the process of unit impact rotation, the expansion of a steam turbine intermediate pressure cylinder is uneven, and the steam turbine vibrates greatly to cause the tripping of the steam turbine. If the water quantity is large, the steam pipeline can be vibrated and deformed, even the steam turbine is subjected to water impact accidents, so that the rotor of the steam turbine is bent and deformed, the blades of the steam turbine are damaged, and the steam turbine is scrapped in severe cases.
SUMMERY OF THE UTILITY MODEL
After having beaten hydrostatic test to the above-mentioned re-heater at every turn, there is the unable clean problem of discharging of ponding in the re-heater system memory, the utility model provides a hydrophobic means is installed additional to re-heater desuperheating water pipeline, and it is that the water that stores up in the re-heater after the completion of hydrostatic test is discharged at desuperheating water piping erection raceway. The specific technical scheme is as follows:
the reheater desuperheating water pipeline is additionally provided with a drainage device, which comprises a desuperheating water main inlet pipe, a valve rear water discharge pipe, a first stop valve, an electric regulating valve, a second stop valve, a temperature-reducing regulating water discharge pipe, a drainage main pipe, a temperature-reducing regulating water spray head, a temperature-reducing regulating water inlet header tank, a temperature-reducing regulating water outlet header tank and a reheater hydrostatic test blocking valve, wherein the desuperheating water main inlet pipe is communicated with the valve rear water discharge pipe, the temperature-reducing regulating water main inlet pipe is provided with the first stop valve, the first stop valve is communicated with the temperature-reducing regulating water pipe, the valve rear water discharge pipe is arranged between the first stop valve and the temperature-reducing regulating water pipe, the temperature-reducing regulating water pipe is provided with the temperature-reducing regulating water inlet header tank, the temperature-reducing regulating water inlet header tank is communicated with the temperature-reducing regulating water outlet header tank through the temperature-reducing regulating water spray head, the adjusting and temperature-reducing water pipe is communicated with an adjusting and temperature-reducing drain pipe, the adjusting and temperature-reducing drain pipe is arranged between the second stop valve and the adjusting and temperature-reducing water inlet header tank, the adjusting and temperature-reducing drain pipe is communicated with the valve rear drain pipe through a drain header pipe, and the reheater hydrostatic test block valve is arranged on a water outlet pipe of the adjusting and temperature-reducing water inlet header tank.
Further inject, the top and the bottom of adjusting the temperature reduction water inlet header tank all are provided with the outlet pipe, all be provided with reheater water pressure test hot section stop valve on the top outlet pipe of adjusting the temperature reduction water inlet header tank and the bottom outlet pipe of adjusting the temperature reduction water inlet header tank.
Further limiting, the reheater desuperheating water pipeline additionally provided with the drainage device further comprises an electric regulating valve, a second stop valve, a fine adjustment desuperheating water drain pipe, a fine adjustment desuperheating water spray head, a fine adjustment desuperheating water inlet header tank and a fine adjustment desuperheating water outlet header tank, wherein the first stop valve is communicated with the fine adjustment desuperheating water pipe, the fine adjustment desuperheating water pipe is provided with the electric regulating valve and the second stop valve, the fine adjustment desuperheating water pipe is communicated with the fine adjustment desuperheating water inlet header tank, the fine adjustment desuperheating water inlet header tank is communicated with the fine adjustment desuperheating water outlet header tank through the fine adjustment desuperheating water spray head, the fine adjustment desuperheating water drain pipe is provided with the fine adjustment desuperheating water drain pipe, the fine adjustment desuperheating water pipe is arranged between the second stop valve and the fine adjustment desuperheating water inlet header tank, and the fine adjustment desuperheating water drain pipe is communicated with the post-valve drain pipe through a drain main pipe, and a reheater hydrostatic test hot section blocking valve is arranged on a water outlet pipe of the fine adjustment temperature reduction water inlet water collection tank.
Further inject, the top and the bottom of fine setting temperature reduction water import header tank all are provided with the outlet pipe, all be provided with reheater hydrostatic test hot section stop valve on the top outlet pipe of fine setting temperature reduction water import header tank and the bottom outlet pipe of fine setting temperature reduction water import header tank.
And further limiting, a front valve water discharge pipe is communicated with the temperature-reduced water main inlet pipe and is arranged at a water inlet of the first stop valve.
Further, the first stop valve is a manual stop valve, the second stop valve comprises an electric stop valve and a manual stop valve, and the electric stop valve is connected with the manual stop valve through an electric regulating valve.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses reheater desuperheating water pipeline installs hydrophobic means additional, it communicates on the regulation desuperheating water pipe and adjusts the desuperheating drain pipe, adjusts the desuperheating drain pipe and sets up between second stop valve and regulation desuperheating water import header tank, adjusts the desuperheating drain pipe and leads to the water pipe intercommunication behind the valve through the drain main; the fine-adjustment temperature-reduction drain pipe is arranged on the fine-adjustment temperature-reduction water pipe, the fine-adjustment temperature-reduction drain pipe is arranged between the second stop valve and the fine-adjustment temperature-reduction water inlet water collection tank, and the fine-adjustment temperature-reduction drain pipe is communicated with the valve rear drain pipe through the drain main pipe. Through the utility model discloses a reheater desuperheating water pipe installs hydrophobic means additional accomplishes the back at hydrostatic test, gathers in reheater system water accessible that deposits adjusts desuperheating drain pipe and fine setting desuperheating water pipe water conservancy diversion to the drainage main, through in drainage main flow to valve back drain pipe, the drain pipe dredges in unison and collects behind the valve to the water that will deposit in the reheater system is whole to be derived. And no water flows into a side pipeline of the steam turbine after the hot section plugging valve of the hydraulic test of the reheater is dismantled, so that the running stability of the steam turbine unit is ensured.
Drawings
FIG. 1 is a schematic view of a reheater desuperheating water pipe of the present invention with a drain;
the method comprises the following steps of 1-reducing water main inlet pipe, 2-water outlet pipe before valve, 3-water outlet pipe after valve, 4-electric stop valve, 5-electric regulating valve, 6-manual stop valve, 7-regulating reducing water drain pipe, 8-fine regulating reducing water drain pipe, 9-water main pipe, 10-regulating reducing water pipe, 11-fine regulating reducing water pipe, 12-regulating reducing water inlet water tank, 13-regulating reducing water outlet water tank, 14-fine regulating reducing water inlet water tank, 15-fine regulating reducing water outlet water tank and 16-reheater water pressure test cold section blocking valve.
Detailed Description
The technical solution of the present invention is further explained below with reference to the drawings and examples, but the present invention is not limited to the embodiments explained below.
The utility model discloses reheater desuperheating water pipeline installs drainage device additional, including desuperheating water main inlet pipe 1, behind-valve drain pipe 3, first stop valve, electrical control valve 5, second stop valve, regulation desuperheating drain pipe 7, drain header 9, regulation desuperheating water pipe 10, regulation desuperheating water spray head, regulation desuperheating water import header tank 12, regulation desuperheating water export header tank 13 and reheater water pressure test cold section blocking valve 16, there is a behind-valve drain pipe 3 on the desuperheating water main inlet pipe 1, there is a first stop valve on the desuperheating water main inlet pipe 1, the first stop valve communicates with regulation desuperheating water pipe 10, behind-valve drain pipe 3 sets up between first stop valve and regulation desuperheating water pipe 10, there are electrical control valve 5 and second stop valve on the regulation desuperheating water pipe 10, regulation desuperheating water pipe 10 communicates with regulation desuperheating water import header tank 12, regulation desuperheating water import header tank 12 communicates with regulation desuperheating water export header tank 13 through regulation desuperheating water spray head, the temperature-reducing adjusting water pipe 10 is communicated with a temperature-reducing adjusting drain pipe 7, the temperature-reducing adjusting drain pipe 7 is arranged between the second stop valve and a temperature-reducing adjusting water inlet water collecting tank 12, the temperature-reducing adjusting drain pipe 7 is communicated with a valve rear drain pipe 3 through a drain header pipe 9, and a reheater hydrostatic test cold section blocking valve 16 is arranged on a water outlet pipe of the temperature-reducing adjusting water inlet water collecting tank 12. The top end and the bottom end of the adjusting desuperheating water inlet water collection tank 12 are both provided with water outlet pipes, and the top end water outlet pipe of the adjusting desuperheating water inlet water collection tank 12 and the bottom end water outlet pipe of the adjusting desuperheating water inlet water collection tank 12 are both provided with reheater hydrostatic test cold section blocking valves 16. The reheater desuperheating water pipeline is additionally provided with a drainage device, and further comprises an electric regulating valve 5, a second stop valve, a fine-adjustment desuperheating water drain pipe 8, a fine-adjustment desuperheating water pipe 11, a fine-adjustment desuperheating water spray nozzle, a fine-adjustment desuperheating water inlet header tank 14 and a fine-adjustment desuperheating water outlet header tank 15, wherein a first stop valve is communicated with the fine-adjustment desuperheating water pipe 11, the fine-adjustment desuperheating water pipe 11 is provided with the electric regulating valve 5 and the second stop valve, the fine-adjustment desuperheating water pipe 11 is communicated with the fine-adjustment desuperheating water inlet header tank 14, the fine-adjustment desuperheating water inlet header tank 14 is communicated with the fine-adjustment desuperheating water outlet header tank 15 through the fine-adjustment desuperheating water spray nozzle, the fine-adjustment desuperheating water drain pipe 8 is arranged on the fine-adjustment desuperheating water pipe 11, the fine-adjustment desuperheating water pipe 11 is arranged between the second stop valve and the fine-adjustment desuperheating water inlet header tank 14, the fine-adjustment desuperheating water pipe 8 is communicated with a post-valve drain pipe 3 through a drainage main pipe 9, the reheater hydrostatic test hot section blocking valve 16 is arranged on a water outlet pipe of the fine adjustment temperature reduction water inlet water collection tank 14. The top and the bottom of the fine adjustment temperature-reducing water inlet header tank 14 are both provided with a water outlet pipe, and the top water outlet pipe of the fine adjustment temperature-reducing water inlet header tank 14 and the bottom water outlet pipe of the fine adjustment temperature-reducing water inlet header tank 14 are both provided with a reheater hydrostatic test cold section blocking valve 16. The main desuperheating water inlet pipe 1 is communicated with a front valve water outlet pipe 2, and the front valve water outlet pipe 2 is arranged at a water inlet of the first stop valve. The first stop valve is manual stop valve, and the second stop valve includes electric stop valve 5 and manual stop valve 6, and electric stop valve 4 is connected with manual stop valve 6 through electric control valve 5.
Example 1
Referring to fig. 1, the reheater desuperheating water pipeline of this embodiment is additionally provided with a drainage device, which includes a desuperheating water main inlet pipe 1, a water outlet pipe 2 in front of a valve, a water outlet pipe 3 behind the valve, a first stop valve, an electric control valve 5, a second stop valve, a temperature-adjusting drain pipe 7, a fine-adjustment desuperheating drain pipe 8, a drainage main pipe 9, a temperature-adjusting desuperheating water pipe 10, a fine-adjustment desuperheating water pipe 11, a temperature-adjusting water spray head, a fine-adjustment desuperheating water spray head, a temperature-adjusting desuperheating water inlet header tank 12, a temperature-adjusting desuperheating water outlet header tank 13, a fine-adjustment desuperheating water inlet header tank 14, a fine-adjustment desuperheating water outlet header tank 15, and a reheater hydraulic test cold section blocking valve 16, the number of the temperature-adjusting desuperheating water pipes 10 is two, which are a first temperature-adjusting desuperheating water pipe and a second temperature-adjusting water pipe respectively, the number of the fine-adjusting desuperheating water pipes 11 is two, which are a first fine-adjusting desuperheating water pipe and a second fine-adjusting water pipe respectively, the main inlet pipe 1 of the temperature-reducing water is provided with a first stop valve which is a manual stop valve and is respectively communicated with a first temperature-reducing adjusting water pipe, a second temperature-reducing adjusting water pipe, a first temperature-reducing fine-adjusting water pipe and a second temperature-reducing fine-adjusting water pipe, the first temperature-reducing adjusting water pipe, the second temperature-reducing adjusting water pipe, the first temperature-reducing fine-adjusting water pipe and the second temperature-reducing fine-adjusting water pipe are respectively provided with an electric stop valve 4 and a second stop valve, the second stop valve comprises an electric stop valve 4 and a manual stop valve 6, the electric stop valve 4 is connected with the manual stop valve (6) through an electric adjusting valve 5, the first temperature-reducing adjusting water pipe is communicated with the top of the temperature-reducing adjusting water inlet collecting tank 12, the second temperature-reducing adjusting water pipe is communicated with the bottom of the temperature-reducing adjusting water inlet collecting tank 12, the temperature-reducing adjusting water inlet collecting tank 12 is communicated with an adjusting water outlet tank 13 through an adjusting temperature-reducing water spray head, two water inlet pipes are arranged on the water collection tank 12 of the temperature-reducing water inlet, the two water inlet pipes are respectively arranged at the top end and the bottom end of the water collection tank 12 of the temperature-reducing water inlet, and a reheater hydraulic test cold section blocking valve 16 is arranged on each of the two water inlet pipes; the first fine-adjustment temperature-reduction water pipe is communicated with the top of the fine-adjustment temperature-reduction water inlet header tank 14, the second fine-adjustment temperature-reduction water pipe is communicated with the bottom of the fine-adjustment temperature-reduction water inlet header tank 14, the fine-adjustment temperature-reduction water inlet header tank 14 is communicated with the fine-adjustment temperature-reduction water outlet header tank 15 through a fine-adjustment temperature-reduction water spray head, two water inlet pipes are arranged on the fine-adjustment temperature-reduction water inlet header tank 14, the two water inlet pipes are respectively arranged at the top end and the bottom end of the fine-adjustment temperature-reduction water inlet header tank 14, and a reheater hydraulic test hot section blocking valve 16 is arranged on each of the two water inlet pipes; the first temperature-reducing regulating water pipe and the second temperature-reducing regulating water pipe are both communicated with a temperature-reducing regulating drain pipe 7; the first fine-adjustment temperature-reduction water pipe and the second fine-adjustment temperature-reduction water pipe are both communicated with a fine-adjustment temperature-reduction water pipe 11; the temperature-reducing regulating drain pipe 7 and the temperature-reducing fine-regulating water pipe 11 are both communicated with a drain main pipe 9, and the drain main pipe 9 is communicated with the post-valve drain pipe 3.
The working process of installing the drainage device on the reheater desuperheating water pipeline in the embodiment is as follows: the desuperheating water sequentially passes through the desuperheating water main inlet pipe 1, the first stop valve, the first temperature-reducing adjusting water pipe, the second temperature-reducing adjusting water pipe, the first fine-adjustment desuperheating water pipe and the second fine-adjustment desuperheating water pipe to respectively enter the desuperheating water inlet regulating header tank 12 and the fine-adjustment desuperheating water inlet header tank 14, the desuperheating water in the desuperheating water inlet regulating header tank 12 is sprayed to a reheater through a desuperheating water spray head for cooling regulation, and the desuperheating water which is not sprayed in the desuperheating water spray head can be collected through a desuperheating water outlet regulating header tank 13; the temperature-reducing water in the fine-adjustment temperature-reducing water inlet water collection tank 14 is sprayed to a reheater through a fine-adjustment temperature-reducing water spray head for fine temperature reduction adjustment, and the temperature-reducing water which is not sprayed in the fine-adjustment temperature-reducing water spray head can be collected through a fine-adjustment temperature-reducing water outlet water collection tank 15; after the hydraulic pressure test is completed, the water accumulated in the reheater system can be guided into the drain main pipe 9 through the temperature-reducing regulating drain pipe 10 and the temperature-reducing fine-adjusting water pipe 11, flows into the valve rear drain pipe 3 through the drain main pipe 9, and is uniformly dredged and collected through the valve rear drain pipe 3, so that all the water accumulated in the reheater system is guided out. And the condition that no water flows into a side pipeline of the steam turbine after the reheater hydrostatic test cold section blocking valve 16 is detached is ensured, and then the running stability of the steam turbine unit is ensured.
The second stop valve is not limited to the electric stop valve 4 and the manual stop valve 6, and other stop valves or one electric stop valve 4 or one manual stop valve 6 may be provided as long as the valve that can realize the function of adjusting the one-way flow of the desuperheating water.
Claims (6)
1. The reheater desuperheating water pipeline is additionally provided with a drainage device, and is characterized by comprising a desuperheating water main inlet pipe (1), a post-valve water drain pipe (3), a first stop valve, an electric regulating valve (5), a second stop valve, a temperature-reducing regulating drain pipe (7), a drain main pipe (9), a temperature-reducing regulating pipe (10), a temperature-reducing regulating water spray head, a temperature-reducing regulating water inlet water collection tank (12), a temperature-reducing regulating water outlet water collection tank (13) and a reheater hydrostatic test cold section blocking valve (16), wherein the desuperheating water main inlet pipe (1) is communicated with the post-valve water drain pipe (3), the desuperheating water main inlet pipe (1) is provided with the first stop valve which is communicated with the temperature-reducing regulating pipe (10), the post-valve water drain pipe (3) is arranged between the first stop valve and the temperature-reducing regulating pipe (10), and the temperature-reducing regulating pipe (10) is provided with the electric regulating valve (5) and the second stop valve, the temperature-reducing water pipe is characterized in that the temperature-reducing water pipe (10) is communicated with a temperature-reducing water inlet header tank (12), the temperature-reducing water inlet header tank (12) is communicated with a temperature-reducing water outlet header tank (13) through a temperature-reducing water spray head, a temperature-reducing adjusting drain pipe (7) is communicated with the temperature-reducing water inlet header tank (10), the temperature-reducing adjusting drain pipe (7) is arranged between a second stop valve and the temperature-reducing water inlet header tank (12), the temperature-reducing adjusting drain pipe (7) is communicated with a valve rear drain pipe (3) through a drain header pipe (9), and a reheater water pressure test cold section blocking valve (16) is arranged on a water outlet pipe of the temperature-reducing water inlet header tank (12).
2. The reheater desuperheating water pipe installation drainage device of claim 1, wherein the top end and the bottom end of the inlet header tank (12) for adjusting desuperheating water are provided with water outlet pipes, and the top end water outlet pipe of the inlet header tank (12) for adjusting desuperheating water and the bottom end water outlet pipe of the inlet header tank (12) for adjusting desuperheating water are provided with a cold section plugging valve (16) for reheater water pressure test.
3. The reheater desuperheating water pipe added drain device according to claim 2, characterized in that the reheater desuperheating water pipe added drain device further comprises an electric regulating valve (5), a second stop valve, a fine adjustment desuperheating water drain pipe (8), a fine adjustment desuperheating water pipe (11), a fine adjustment desuperheating water spray head, a fine adjustment desuperheating water inlet header tank (14) and a fine adjustment desuperheating water outlet header tank (15), the first stop valve is communicated with the fine adjustment desuperheating water pipe (11), the fine adjustment desuperheating water pipe (11) is provided with the electric regulating valve (5) and the second stop valve, the fine adjustment desuperheating water pipe (11) is communicated with the fine adjustment desuperheating water inlet header tank (14), the fine adjustment desuperheating water inlet header tank (14) is communicated with the fine adjustment desuperheating water outlet header tank (15) through the fine adjustment desuperheating water spray head, the fine adjustment desuperheating water drain pipe (11) is provided with the fine adjustment desuperheating water drain pipe (8), the fine-adjustment temperature-reduction drain pipe (8) is arranged between the second stop valve and the fine-adjustment temperature-reduction water inlet header tank (14), the fine-adjustment temperature-reduction drain pipe (8) is communicated with the valve rear drain pipe (3) through a drain header pipe (9), and a reheater hydrostatic test hot section blocking valve (16) is arranged on a water outlet pipe of the fine-adjustment temperature-reduction water inlet header tank (14).
4. The reheater desuperheating water pipe added with the water drainage device of claim 3, wherein the top end and the bottom end of the fine adjustment desuperheating water inlet header tank (14) are provided with water outlet pipes, and the top end water outlet pipe of the fine adjustment desuperheating water inlet header tank (14) and the bottom end water outlet pipe of the fine adjustment desuperheating water inlet header tank (14) are provided with reheater water pressure test hot section blocking valves (16).
5. A reheater desuperheating water pipe additionally installed with water drainage device according to any of claims 1-4, characterized in that the desuperheating water main inlet pipe (1) is connected with a valve front water outlet pipe (2), the valve front water outlet pipe (2) is arranged at the water inlet of the first stop valve.
6. The reheater desuperheating water pipe is additionally provided with a water drainage device according to claim 5, wherein the first stop valve is a manual stop valve, the second stop valve comprises an electric stop valve (4) and a manual stop valve (6), and the electric stop valve (4) is connected with the manual stop valve (6) through an electric regulating valve (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120372154.9U CN214500903U (en) | 2021-02-10 | 2021-02-10 | Reheater temperature-reducing water pipeline additionally-installed drainage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120372154.9U CN214500903U (en) | 2021-02-10 | 2021-02-10 | Reheater temperature-reducing water pipeline additionally-installed drainage device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214500903U true CN214500903U (en) | 2021-10-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120372154.9U Active CN214500903U (en) | 2021-02-10 | 2021-02-10 | Reheater temperature-reducing water pipeline additionally-installed drainage device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214500903U (en) |
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2021
- 2021-02-10 CN CN202120372154.9U patent/CN214500903U/en active Active
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