CN215336270U - Condensate water regulating system on water side of low-temperature economizer - Google Patents
Condensate water regulating system on water side of low-temperature economizer Download PDFInfo
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- CN215336270U CN215336270U CN202121358347.5U CN202121358347U CN215336270U CN 215336270 U CN215336270 U CN 215336270U CN 202121358347 U CN202121358347 U CN 202121358347U CN 215336270 U CN215336270 U CN 215336270U
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Abstract
The utility model discloses a condensed water regulating system on the water side of a low-temperature economizer, which mainly comprises a main regulating valve group, an auxiliary regulating valve group, a low-pressure heater and the low-temperature economizer, wherein the main regulating valve group, the auxiliary regulating valve group and the low-pressure heater are sequentially arranged in series; the main regulating valve group is used for regulating the flow of condensed water in the unit to control the water level of the deaerator, the auxiliary regulating valve group is used for regulating the flow of the condensed water in the unit at a small flow, and distributing the flow of the condensed water entering the low-temperature economizer and the low-pressure heater, and the low-pressure heater and the low-temperature economizer are used for heating the introduced condensed water; and the main regulating valve group and the auxiliary regulating valve group are both provided with regulating valve group bypasses in parallel.
Description
Technical Field
The utility model relates to the field of equipment systems of thermal power plants, in particular to a condensed water adjusting system on the water side of a low-temperature economizer.
Background
The existing thermal power plant is provided with the low-temperature economizer, so that condensed water flows through the low-temperature economizer, the waste heat of the flue gas of a boiler is absorbed, and the temperature of the flue gas of the boiler entering the low-temperature dust remover is reduced. Through the waste heat of discharging fume of make full use of boiler, promote the condensate temperature, further promoted thermal power factory's unit efficiency, can reduce boiler exhaust gas temperature simultaneously, improve low temperature dust remover dust collection efficiency. The water side of the low-temperature economizer can be connected with the low-pressure heater in series or in parallel, and a reasonable water side arrangement scheme of the low-temperature economizer is selected according to the specific system configuration of the unit for comparison and analysis.
For the scheme of parallel arrangement of the water sides of the low-temperature economizers, a complex regulating system needs to be arranged in a common engineering condensate system, a main regulating valve and an auxiliary regulating valve set are arranged on a main pipeline and connected in parallel, a shut-off bypass is configured and used for regulating the condensate flow of the whole unit, and a regulating valve set and the shut-off bypass are arranged on a pipeline on the water side of the low-temperature economizer and used for regulating the condensate flow entering the low-temperature economizer, so that the control operation is complex, and the investment is high. Therefore, there is a need to develop a configuration scheme of a condensate water regulating system, which can meet the requirement of regulating the condensate water flow of each device, simplify the system configuration, and reduce the operation difficulty and the engineering investment.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a condensate water regulating system on the water side of a low-temperature economizer, which has a simple structure and a low investment cost, and overcomes the above-mentioned defects of the prior art.
The utility model aims to provide a condensate water regulating system on the water side of a low-temperature economizer, which mainly comprises a main regulating valve group, an auxiliary regulating valve group, a low-pressure heater and the low-temperature economizer, wherein the main regulating valve group, the auxiliary regulating valve group and the low-pressure heater are sequentially connected in series; the main regulating valve group is used for regulating the flow of condensed water in the unit so as to control the water level of the deaerator, the auxiliary regulating valve group is used for regulating the flow of the condensed water in the unit when the flow is small, and distributing the flow of the condensed water entering the low-temperature economizer and the low-pressure heater, and the low-pressure heater and the low-temperature economizer are used for heating the introduced condensed water.
Furthermore, a main regulating valve group bypass is arranged on the main regulating valve group in parallel, an auxiliary regulating valve group bypass is arranged on the auxiliary regulating valve group, and control valves for controlling the opening and closing of the corresponding bypasses are arranged on the main regulating valve group bypass and the auxiliary regulating valve group bypass; one end of the main regulating valve group bypass is connected with the water inlet end of the main regulating valve group, and the other end of the main regulating valve group bypass is connected with the water outlet end of the main regulating valve group; one end of the auxiliary regulating valve group bypass is connected with the water inlet end of the auxiliary regulating valve group, and the other end of the auxiliary regulating valve group bypass is connected with the water outlet end of the auxiliary regulating valve group.
Furthermore, the low-pressure heater comprises at least two groups of primary low-pressure heaters and secondary low-pressure heaters which are sequentially connected in series.
The utility model has the beneficial technical effects that: the utility model reasonably and fully utilizes the regulating valve group, greatly simplifies a condensate system while reducing the number of the valve groups, achieves the purposes of simple control operation and investment reduction, simultaneously meets the requirements of controlling the water level of the deaerator and the condensate flow in the low-temperature economizer, and further improves the unit economy.
Drawings
Fig. 1 is a schematic view of the overall composition structure of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention is further described with reference to the accompanying drawings and examples.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "inside", "outside", "lateral", "vertical", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1, the condensed water regulating system on the water side of the low-temperature economizer mainly comprises a main regulating valve group 1, an auxiliary regulating valve group 2, a low-pressure heater 3 and a low-temperature economizer 4, wherein the main regulating valve group 1, the auxiliary regulating valve group 2 and the low-pressure heater 3 are sequentially arranged in series, the low-temperature economizer 4 is arranged in parallel with the auxiliary regulating valve group 2 through a connecting pipeline 5, one end of the connecting pipeline 5 is connected with the water inlet end of the auxiliary regulating valve group 2, the other end of the connecting pipeline is connected with the water outlet end of the low-pressure heater 3, and the inlet and outlet connecting pipelines of the low-temperature economizer 4 are provided with shut-off valves 6; the main regulating valve group 1 is used for regulating the condensate flow in the unit to control the water level of the deaerator, the auxiliary regulating valve group 2 is used for regulating the condensate flow in the unit when the flow is small, and simultaneously distributing the condensate flow entering the low-temperature economizer 4 and the low-pressure heater 3, namely, the auxiliary regulating valve group 2 is connected with the low-pressure heater 3 in series, when the condensate flow is small, the auxiliary regulating valve group can be used for finely regulating the condensate flow in the unit to control the water level of the deaerator, and is also connected with the low-temperature economizer 4 in parallel to regulate the condensate flow entering the low-temperature economizer 4, and the condensate flow regulating valve group can be fully utilized by the arrangement scheme of the condensate water regulating valve group, so that the configuration of a condensate system is simplified, and the construction cost is saved. The low-pressure heater 3 and the low-temperature economizer 4 are used for heating the introduced condensed water.
Referring to fig. 1, a main regulating valve group bypass 11 is connected in parallel to the main regulating valve group 1, an auxiliary regulating valve group bypass 21 is arranged on the auxiliary regulating valve group 2, and control valves 7 for controlling the opening and closing of the corresponding bypasses are arranged on the main regulating valve group bypass 11 and the auxiliary regulating valve group bypass 21; one end of the main regulating valve group bypass 11 is connected with the water inlet end of the main regulating valve group 1, and the other end of the main regulating valve group bypass is connected with the water outlet end of the main regulating valve group 1; one end of the auxiliary regulating valve group bypass 21 is connected with the water inlet end of the auxiliary regulating valve group 2, and the other end of the auxiliary regulating valve group bypass is connected with the water outlet end of the auxiliary regulating valve group 2. The main regulating valve group bypass 11 and the auxiliary regulating valve group 21 are used for regulating the working conditions of the corresponding valve groups under different working conditions, and the low-temperature economizer 4 can be cut off when the low-temperature economizer 4 fails. The low-pressure heater 3 comprises at least two groups of primary low-pressure heaters 31 and secondary low-pressure heaters 32 which are sequentially arranged in series.
The main regulating valve group bypass and the auxiliary regulating valve group bypass are used for the bypass of the regulating valve group under different working conditions, and the method comprises the following steps:
working condition 1: when the condensate flow is large and the low-temperature economizer is put into use, the shut-off bypasses are all in a shut-off state, the main regulating valve group is used for regulating the condensate flow in the unit and controlling the water level of the deaerator, and the auxiliary regulating valve group is used for distributing the condensate flow entering the low-temperature economizer and the low-pressure heater connected with the low-temperature economizer in parallel.
Working condition 2: when the condensate flow is large and the low-temperature economizer is not put into use, the inlet and outlet shutoff valves of the low-temperature economizer are closed, the auxiliary regulating valve group bypass is opened, the main regulating valve group bypass is closed, at the moment, the main regulating valve group is used for regulating the condensate flow in the unit, controlling the water level of the deaerator, the auxiliary regulating valve group is closed, and the condensate enters the low-pressure heater from the auxiliary regulating valve group bypass, so that the pipeline resistance is reduced, and the power consumption of the condensate pump is reduced.
Working condition 3: when the flow of the condensed water is small, the flow of the condensed water in the low-pressure heater needs to be preferentially ensured, at the moment, the inlet and outlet shutoff valves of the low-temperature economizer are closed, the low-temperature economizer is in a cut-off state, the main regulating valve group is closed, the main regulating valve group bypass is opened, the auxiliary regulating valve group bypass is closed, and the auxiliary regulating valve group is used for regulating the flow of the condensed water in the unit and controlling the water level of the deaerator.
The utility model reasonably and fully utilizes the regulating valve group, greatly simplifies a condensate system while reducing the number of the valve groups, achieves the purposes of simple control operation and investment reduction, simultaneously meets the requirements of controlling the water level of the deaerator and the condensate flow in the low-temperature economizer, and further improves the unit economy.
The specific embodiments described herein are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (3)
1. The utility model provides a condensate water governing system of low temperature economizer water side which characterized in that: the low-temperature economizer mainly comprises a main regulating valve group, an auxiliary regulating valve group, a low-pressure heater and a low-temperature economizer, wherein the main regulating valve group, the auxiliary regulating valve group and the low-pressure heater are sequentially arranged in series; the main regulating valve group is used for regulating the flow of condensed water in the unit so as to control the water level of the deaerator, the auxiliary regulating valve group is used for regulating the flow of the condensed water in the unit when the flow is small, and distributing the flow of the condensed water entering the low-temperature economizer and the low-pressure heater, and the low-pressure heater and the low-temperature economizer are used for heating the introduced condensed water.
2. The system for regulating condensate on the water side of a low-temperature economizer according to claim 1, wherein: a main regulating valve group bypass is arranged on the main regulating valve group in parallel, an auxiliary regulating valve group bypass is arranged on the auxiliary regulating valve group, and control valves for controlling the opening and closing of the corresponding bypasses are arranged on the main regulating valve group bypass and the auxiliary regulating valve group bypass; one end of the main regulating valve group bypass is connected with the water inlet end of the main regulating valve group, and the other end of the main regulating valve group bypass is connected with the water outlet end of the main regulating valve group; one end of the auxiliary regulating valve group bypass is connected with the water inlet end of the auxiliary regulating valve group, and the other end of the auxiliary regulating valve group bypass is connected with the water outlet end of the auxiliary regulating valve group.
3. The condensate water regulation system on the water side of a low-temperature economizer according to claim 1 or 2, characterized in that: the low-pressure heater comprises at least two groups of first-stage low-pressure heaters and second-stage low-pressure heaters which are sequentially connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121358347.5U CN215336270U (en) | 2021-06-18 | 2021-06-18 | Condensate water regulating system on water side of low-temperature economizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121358347.5U CN215336270U (en) | 2021-06-18 | 2021-06-18 | Condensate water regulating system on water side of low-temperature economizer |
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| Publication Number | Publication Date |
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| CN215336270U true CN215336270U (en) | 2021-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121358347.5U Active CN215336270U (en) | 2021-06-18 | 2021-06-18 | Condensate water regulating system on water side of low-temperature economizer |
Country Status (1)
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| CN (1) | CN215336270U (en) |
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2021
- 2021-06-18 CN CN202121358347.5U patent/CN215336270U/en active Active
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