CN216448142U - Water supply system and dry quenching boiler - Google Patents
Water supply system and dry quenching boiler Download PDFInfo
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- CN216448142U CN216448142U CN202123245162.6U CN202123245162U CN216448142U CN 216448142 U CN216448142 U CN 216448142U CN 202123245162 U CN202123245162 U CN 202123245162U CN 216448142 U CN216448142 U CN 216448142U
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Abstract
The embodiment of the application provides a water supply system and a dry quenching boiler. The water supply system comprises a main water supply pipeline and a bypass group. The main water supply pipeline comprises a first end and a second end, and the first end of the main water supply pipeline is connected with a water supply pump of the dry quenching boiler; the bypass set is connected between the second end of the main water supply pipeline and an economizer of the dry quenching boiler, the bypass set comprises a plurality of bypass pipelines which are sequentially arranged and are mutually connected in parallel, a valve is arranged on each bypass pipeline and used for adjusting water flow in the bypass pipeline, the valve has a maximum flow value and a minimum flow value, and the minimum flow value of the valve on the bypass pipeline with the previous serial number is greater than or equal to the maximum flow value of the valve on the bypass pipeline with the next serial number. When the water supply system is in different load working conditions, the valve on the bypass pipeline matched with the flow value in the water supply main pipeline can be controlled to adjust the water supply quantity of the water supply system according to the flow value in the water supply main pipeline, so that the water supply system can adjust the water supply quantity under different load working conditions.
Description
Technical Field
The application relates to the technical field of coking waste heat utilization, in particular to a water supply system and a coke dry quenching boiler.
Background
This section provides background information related to the present disclosure only and is not necessarily prior art.
The coke dry quenching boiler has the main functions of reducing the temperature of the inert circulating gas of the coke dry quenching system, absorbing the heat of the inert circulating gas and generating steam for heat supply and power generation, so that the heat of the inert circulating gas is effectively utilized and the aim of saving energy is fulfilled. The operation of the coke dry quenching boiler is realized by a plurality of subsystems together, wherein the main water supply system is mainly used for supplying water fed from a water supply pump of the boiler to an economizer of the coke dry quenching boiler.
In the related technology, the flow regulating device in the main water supply system of the coke dry quenching boiler has single function, and the high-precision regulation of the water supply amount under different load working conditions can not be realized.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the application is to provide a water supply system and a dry quenching boiler to realize the adjustment of the water supply amount of the water supply system under different load working conditions. The specific technical scheme is as follows:
embodiments of a first aspect of the present application provide a feed water system for a dry quenching boiler, comprising: a main water supply pipeline and a bypass group. The main water supply pipeline comprises a first end and a second end, and the first end of the main water supply pipeline is connected with a water supply pump of the dry quenching boiler; the bypass group is connected between the second end of the main water supply pipeline and the economizer of the coke dry quenching boiler, the bypass group comprises a plurality of bypass pipelines which are sequentially arranged and are mutually connected in parallel, each bypass pipeline is provided with a valve, the valve is used for adjusting water flow in the bypass pipeline, the valve has a maximum flow value and a minimum flow value, and the minimum flow value of the valve on the bypass pipeline with the previous serial number is greater than or equal to the maximum flow value of the valve on the bypass pipeline with the next serial number.
The water supply system of the embodiment of the application can be applied to a dry quenching boiler and comprises a main water supply pipeline and a bypass group. The first end of the main water supply pipeline is connected with a water supply pump of the dry quenching boiler, the bypass group is connected with the second end of the main water supply pipeline and an economizer of the dry quenching boiler, the bypass group comprises a plurality of bypass pipelines which are sequentially arranged and are mutually connected in parallel, a valve is arranged on each bypass pipeline and used for adjusting water flow in the bypass pipeline, each valve has a maximum flow value and a minimum flow value, and the minimum flow value of the valve on the bypass pipeline with the former serial number is larger than or equal to the maximum flow value of the valve on the bypass pipeline with the latter serial number. Therefore, when the water supply system is in different load working conditions, namely the flow in the main water supply pipeline is different, the valves on the side pipelines matched with the flow in the main water supply pipeline can be controlled to adjust the water supply amount of the water supply system according to the flow value in the main water supply pipeline, the valves on the other side pipelines are closed, the adjusting performance of the water supply system can be enhanced, and the water supply amount of the water supply system can be adjusted under different load working conditions.
In addition, the water supply system according to the embodiment of the application can also have the following additional technical characteristics:
in some embodiments of the present application, the bypass group further comprises a backup bypass line connected in parallel with the plurality of bypass lines, and a second valve is disposed on the backup bypass line and used for adjusting water flow in the backup bypass line.
In some embodiments of the present application, two third valves are disposed on each of the bypass lines and located on two sides of the first valve, and the third valves are used for controlling the on-off of the bypass line.
In some embodiments of the present application, the valve employs a flow regulating valve.
In some embodiments of the present application, the second valve employs a throttle valve.
In some embodiments of the present application, the third valve is a gate valve.
In some embodiments of the present application, a check valve and a fourth valve are disposed between the bypass stack and the economizer of the dry quenching boiler, the fourth valve being configured to control the on-off between the bypass stack and the economizer of the dry quenching boiler.
In some embodiments of the present application, the fourth valve is a gate valve.
In some embodiments of the present application, a flow monitoring device is provided on the water main.
Embodiments of a second aspect of the present application provide a dry quenching boiler including the feedwater system of any of the above examples.
The dry quenching boiler of the embodiment of the application comprises a water supply system, wherein the water supply system comprises a water supply main pipeline and a bypass group. The first end of the main water supply pipeline is connected with a water supply pump of the dry quenching boiler, the bypass group is connected with the second end of the main water supply pipeline and an economizer of the dry quenching boiler, the bypass group comprises a plurality of bypass pipelines which are sequentially arranged and are mutually connected in parallel, a valve is arranged on each bypass pipeline and used for adjusting water flow in the bypass pipeline, each valve has a maximum flow value and a minimum flow value, and the minimum flow value of the valve on the bypass pipeline with the former serial number is larger than or equal to the maximum flow value of the valve on the bypass pipeline with the latter serial number. Therefore, when the water supply system is in different load working conditions, namely the flow in the main water supply pipeline is different, the valves on the side pipelines matched with the flow in the main water supply pipeline can be controlled to adjust the water supply amount of the water supply system according to the flow value in the main water supply pipeline, the valves on the other side pipelines are closed, the adjusting performance of the water supply system of the dry quenching boiler can be enhanced, and the adjustment of the water supply amount of the water supply system of the dry quenching boiler under different load working conditions is realized.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic view of a water system according to some embodiments of the present application.
FIG. 2 is a schematic view of a water system according to further embodiments of the present application.
Description of reference numerals:
100 main water supply pipeline; 111 a check valve; 112 a fourth valve;
200 bypass groups; 210 a first bypass line; 211 a fifth valve; 212 a third valve; 220 a second bypass line; 221 a sixth valve; 230 a third bypass line; 231 a seventh valve; 240 spare bypass line; 241 second valve.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the description herein are intended to be within the scope of the present disclosure.
Embodiments of the first aspect of the present application provide a water supply system for a dry quenching boiler, the water supply system includes a main water supply pipeline 100 and a bypass set 200, the main water supply pipeline 100 includes a first end and a second end, the first end of the main water supply pipeline 100 is connected to a water supply pump (not shown in the figure) of the dry quenching boiler; the bypass group 200 is connected between the second end of the main water supply pipeline 100 and an economizer (not shown in the figure) of the coke dry quenching boiler, the bypass group 200 comprises a plurality of bypass pipelines which are sequentially arranged and are mutually connected in parallel, each bypass pipeline is provided with a valve for adjusting the water flow in the bypass pipeline, the valve has a maximum flow value and a minimum flow value, and the minimum flow value of the valve on the bypass pipeline with the previous serial number is greater than or equal to the maximum flow value of the valve on the bypass pipeline with the next serial number.
The water supply system of the embodiment of the application can be applied to a dry quenching boiler. The feedwater system includes a main feedwater line 100 and a bypass set 200. The first end of the main water supply pipeline 100 is connected with a water supply pump of the dry quenching boiler, the bypass group 200 is connected with the second end of the main water supply pipeline 100 and an economizer of the dry quenching boiler, the bypass group 200 comprises a plurality of bypass pipelines which are sequentially arranged and are mutually connected in parallel, a valve is arranged on each bypass pipeline and used for adjusting water flow in the bypass pipeline, each valve has a maximum flow value and a minimum flow value, and the minimum flow value of the valve on the bypass pipeline with the previous serial number is larger than or equal to the maximum flow value of the valve on the bypass pipeline with the next serial number. Therefore, when the water supply system is in different load working conditions, namely the flow in the main water supply pipeline 100 is different, the valves on the side pipelines matched with the flow in the main water supply pipeline 100 can be controlled to adjust the water supply amount of the water supply system according to the flow value in the main water supply pipeline 100, the valves on the other side pipelines are closed, the adjusting performance of the water supply system can be enhanced, and the water supply amount of the water supply system can be adjusted under different load working conditions.
It should be noted that the number of the bypass pipes in the bypass group 200 may be designed as required, and the bypass pipe of the previous serial number and the bypass pipe of the next serial number refer to the bypass pipe of the previous serial number and the bypass pipe of the next serial number in the bypass pipes of the two adjacent serial numbers. For example, as shown in fig. 1, the bypass set 200 may include two bypass pipes connected in parallel, which are respectively referred to as a first bypass pipe 210 and a second bypass pipe 220, where the first bypass pipe 210 is a bypass pipe of a previous sequence number of the second bypass pipe 220, and the second bypass pipe 220 is a bypass pipe of a next sequence number of the first bypass pipe 210; the fifth valve 211 is arranged on the first bypass pipe 210, the sixth valve 221 is arranged on the second bypass pipe 220, the minimum flow value of the fifth valve 211 on the first bypass pipe 210 is greater than or equal to 50% of the maximum flow value in the main water supply pipe 100, the maximum flow value of the fifth valve 211 on the first bypass pipe 210 is greater than or equal to the maximum flow value in the main water supply pipe 100, the maximum flow value of the sixth valve 221 on the second bypass pipe 220 is less than or equal to 50% of the maximum flow value in the main water supply pipe 100, and the minimum flow value of the sixth valve 221 on the second bypass pipe 220 is 0.
When the feedwater flow provided by the feedwater pump is 50% -100% of the maximum flow value of the main feedwater pipeline 100, the feedwater flows into the first bypass pipeline 210 and is regulated by the fifth valve 211 on the first bypass pipeline 210, and the sixth valve 221 on the second bypass pipeline 220 is in a closed state; when the feed water flow rate provided by the feed water pump is 0-50% of the maximum flow rate value of the main feed water pipeline 100, the feed water flows into the second bypass pipeline 220 and is regulated by the sixth valve 221 on the second bypass pipeline 220, and the fifth valve 211 on the first bypass pipeline 210 is in a closed state.
For example, as shown in fig. 2, the bypass set 200 may include three bypass pipes sequentially arranged and connected in parallel, which are respectively referred to as a first bypass pipe 210, a second bypass pipe 220 and a third bypass pipe 230, the first bypass pipe 210 is a bypass pipe of a previous sequence number of the second bypass pipe 220, the second bypass pipe 220 is a bypass pipe of a next sequence number of the first bypass pipe 210, the second bypass pipe 220 is a bypass pipe of a previous sequence number of the third bypass pipe 230, and the third bypass pipe 230 is a bypass pipe of a next sequence number of the second bypass pipe 220. A fifth valve 211 is arranged on the first bypass pipeline 210, a sixth valve 221 is arranged on the second bypass pipeline 220, a seventh valve 231 is arranged on the third bypass pipeline 230, the minimum flow value of the fifth valve 211 on the first bypass pipeline 210 is more than or equal to 60% of the maximum flow value in the main water supply pipeline 100, and the maximum flow value of the fifth valve 211 on the first bypass pipeline 210 is more than or equal to the maximum flow value in the main water supply pipeline 100; the maximum flow value of the sixth valve 221 on the second bypass pipe 220 is equal to or less than 60% of the maximum flow value in the main water supply pipe 100, the minimum flow value of the sixth valve 221 on the second bypass pipe 220 is equal to or more than 30% of the maximum flow value in the main water supply pipe 100, the maximum flow value of the seventh valve 231 on the third bypass pipe 230 is equal to or less than 30% of the maximum flow value in the main water supply pipe 100, and the minimum flow value of the seventh valve 231 on the third bypass pipe 230 is greater than 0.
When the feedwater flow provided by the feedwater pump is 60% -100% of the maximum flow value of the main feedwater line 100, the feedwater flows into the first bypass line 210 and is regulated by the fifth valve 211 on the first bypass line 210, and the sixth valve 221 on the second bypass line 220 and the seventh valve 231 on the third bypass line 230 are both in a closed state; when the feed water flow provided by the feed water pump is 30% -60% of the maximum flow value of the main feed water pipeline 100, the feed water flows into the second bypass pipeline 220 and the feed water flow is regulated through a sixth valve 221 on the second bypass pipeline, and a fifth valve 211 on the first bypass pipeline 210 and a seventh valve 231 on the third bypass pipeline 230 are both in a closed state; when the feed water flow rate supplied by the feed water pump is 0-30% of the maximum flow rate value of the main feed water line 100, the feed water flows into the third bypass line 230 and the feed water flow rate is regulated by the seventh valve 231 of the third bypass line 230, and the fifth valve 211 of the first bypass line 210 and the sixth valve 221 of the second bypass line 220 are both in a closed state.
The maximum flow rate value of the main water supply line 100 is a maximum flow rate that can flow through the main water supply line 100.
In some embodiments of the present application, as shown in fig. 1, the bypass group further comprises a backup bypass line 240 connected in parallel with the plurality of bypass lines, and a second valve 241 is disposed on the backup bypass line 240, and the second valve 241 is used for adjusting the flow rate of water in the third bypass line 240. When a plurality of bypass pipes are overhauled, the system is normally supplied with water by arranging the standby bypass pipe 240 and controlling the opening degree of the second valve 241 arranged on the standby bypass pipe 240.
In some embodiments of the present application, two third valves 212 are provided on each bypass line and on either side of the valve, the third valves 212 being used to control the opening and closing of each bypass line. When the system normally operates, the third valves 212 are in a normally open state, and when the valve on any bypass pipeline needs to be overhauled, the third valves 212 on the two sides of the valve are closed to block the water supply flowing through the bypass pipeline, so that the system is convenient to overhaul. For example, as shown in fig. 1, the bypass set 200 may include two bypass pipes connected in parallel, which are respectively referred to as a first bypass pipe 210 and a second bypass pipe 220, two third valves 212 are disposed on two sides of the first bypass pipe 210 and the second bypass pipe 220, and when the first bypass pipe 210 needs to be serviced, the third valves 212 on two sides of the first bypass pipe 210 are in a closed state; when the second bypass line 220 needs to be serviced, the third valves 212 located at both sides of the second bypass line 220 are in a closed state.
In some embodiments of the present application, the valve employs a flow regulating valve. The flow regulating valve is used for receiving the control signal output by the regulating control unit, changing the medium flow control element by means of power operation, and achieving the purpose of controlling the water flow of the bypass pipeline by adopting the flow regulating valve through the valve. For example, as shown in fig. 1, the bypass set 200 may include two bypass lines connected in parallel, which are respectively referred to as a first bypass line 210 and a second bypass line 220, the first bypass line 210 is provided with a fifth valve 211, the second bypass line 220 is provided with a sixth valve 221, and the fifth valve 211 and the sixth valve 221 both use flow regulating valves to control the water flow rates of the first bypass line 210 and the second bypass line 220.
In some embodiments of the present application, as shown in FIG. 1, the second valve 241 employs a throttle valve. A throttle valve is a valve that controls the flow of fluid by changing the throttle section or throttle length. The purpose of controlling the flow of water through the backup bypass line 240 is achieved by a third valve 241 using a throttle valve.
In some embodiments of the present application, as shown in fig. 1, the third valve 212 is a gate valve. The gate valve is a shutter, the movement direction of the shutter is vertical to the fluid direction, and the shutter can only be fully opened and closed. The purpose of controlling the on-off of the bypass pipeline is achieved by adopting a gate valve through the third valve 212.
In some embodiments of the present application, as shown in FIG. 1, a check valve 111 and a fourth valve 112 are disposed between the bypass stack 200 and the economizer of the dry quenching boiler, the fourth valve 112 being used to control the on/off between the bypass stack 200 and the economizer of the dry quenching boiler. The water backflow in the economizer of the dry quenching boiler is prevented by the provision of the check valve 111.
In some embodiments of the present application, as shown in fig. 1, the fourth valve 112 is a gate valve, such as an electric gate valve. A gate valve is used to control the connection and disconnection between the bypass stack 200 and the economizer of the coke dry quenching boiler via the fourth valve 112.
In some embodiments of the present application, as shown in FIG. 1, a flow monitoring device is provided on the main feedwater line 100. The water supply quantity of the water supply system under different load working conditions is adjusted by arranging a flow monitoring device on the main water supply pipeline 100 to monitor the water supply flow and correspondingly controlling the opening of the valve on each side pipeline according to monitoring data.
Embodiments of a second aspect of the present application provide a dry quenching boiler including the feedwater system of any of the above examples.
As shown in fig. 1, the dry quenching boiler of the embodiment of the present application includes a water supply system including a main water supply line 100 and a bypass group 200. The first end of the main water supply pipeline 100 is connected with a water supply pump of the dry quenching boiler, the bypass group 200 is connected with the second end of the main water supply pipeline 100 and an economizer of the dry quenching boiler, the bypass group 200 comprises a plurality of bypass pipelines which are sequentially arranged and are mutually connected in parallel, a valve is arranged on each bypass pipeline and used for adjusting water flow in the bypass pipeline, each valve has a maximum flow value and a minimum flow value, and the minimum flow value of the valve on the bypass pipeline with the previous serial number is larger than or equal to the maximum flow value of the valve on the bypass pipeline with the next serial number. Therefore, when the water supply system is in different load working conditions, namely the flow in the main water supply pipeline 100 is different, the valves on the side pipelines matched with the flow in the main water supply pipeline 100 can be controlled to adjust the water supply amount of the water supply system according to the flow value in the main water supply pipeline 100, the valves on the other side pipelines are closed, the adjusting performance of the water supply system of the coke dry quenching boiler can be enhanced, and the water supply amount of the water supply system of the coke dry quenching boiler can be adjusted under different load working conditions.
The above description is only for the preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application are included in the protection scope of the present application.
Claims (10)
1. A water supply system for a dry quenching boiler, comprising:
the main water supply pipeline comprises a first end and a second end, and the first end of the main water supply pipeline is connected with a water supply pump of the dry quenching boiler;
the bypass group is connected between the second end of the main water supply pipeline and an economizer of the coke dry quenching boiler and comprises a plurality of bypass pipelines which are sequentially arranged and are mutually connected in parallel, a valve is arranged on each bypass pipeline and used for adjusting water flow in the bypass pipeline, the valve has a maximum flow value and a minimum flow value, and the minimum flow value of the valve on the bypass pipeline with the previous sequence number is greater than or equal to the maximum flow value of the valve on the bypass pipeline with the next sequence number.
2. The water supply system of claim 1, wherein the bypass group further comprises a backup bypass line connected in parallel with the plurality of bypass lines, the backup bypass line having a second valve disposed thereon for regulating the flow of water within the backup bypass line.
3. The water supply system according to claim 1, wherein two third valves are provided on each of the bypass lines on both sides of the valve, and the third valves are used for controlling the on/off of the bypass line.
4. The water supply system of claim 1, wherein the valve is a flow regulating valve.
5. The water supply system of claim 2, wherein the second valve employs a throttle valve.
6. The watering system according to claim 3, wherein the third valve is a gate valve.
7. The water supply system of claim 1, wherein a check valve and a fourth valve are disposed between the bypass bank and the economizer of the dry quenching boiler, and the fourth valve is used for controlling the on-off between the bypass bank and the economizer of the dry quenching boiler.
8. The water supply system of claim 7, wherein the fourth valve is a gate valve.
9. The water supply system of claim 1, wherein a flow monitoring device is provided on the water supply line.
10. A dry quenching boiler, characterized by comprising a water supply system according to any of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123245162.6U CN216448142U (en) | 2021-12-22 | 2021-12-22 | Water supply system and dry quenching boiler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123245162.6U CN216448142U (en) | 2021-12-22 | 2021-12-22 | Water supply system and dry quenching boiler |
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| CN216448142U true CN216448142U (en) | 2022-05-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117722671A (en) * | 2023-11-02 | 2024-03-19 | 中石化宁波工程有限公司 | System for producing superheated steam by green electric heating coupled boiler and heat supply power generation method |
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2021
- 2021-12-22 CN CN202123245162.6U patent/CN216448142U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117722671A (en) * | 2023-11-02 | 2024-03-19 | 中石化宁波工程有限公司 | System for producing superheated steam by green electric heating coupled boiler and heat supply power generation method |
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