CN213240908U - A multi-monitoring and regulating system for circulating water in power plants - Google Patents
A multi-monitoring and regulating system for circulating water in power plants Download PDFInfo
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- CN213240908U CN213240908U CN202021733331.3U CN202021733331U CN213240908U CN 213240908 U CN213240908 U CN 213240908U CN 202021733331 U CN202021733331 U CN 202021733331U CN 213240908 U CN213240908 U CN 213240908U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 238000012544 monitoring process Methods 0.000 title claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 title claims abstract 5
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 239000000498 cooling water Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 abstract description 3
- 239000007921 spray Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
一种电厂循环水多监测调节系统，涉及电厂控制技术领域，包括发电机组主机、冷却塔、测量机构、变频泵和控制装置；所述冷却塔出水口通过冷却水管与所述发电机组主机进水口连接，所述冷却塔入水口通过回水管与所述发电机组主机出水口连接，所述测量机构用于测量所述冷却水管中的水流量数据，并将该水流量数据发送给所述控制装置；所述发电机组主机通过数据线发送主机负荷数据给所述控制装置；所述控制装置根据水流量数据、主机负荷数据生成控制信号调整所述变频泵的工作频率，所述变频泵安装于所述冷却水管上。本申请提供一种电厂循环水多监测调节系统，能够自动调整循环水水量，且调整方式更精准。
A multi-monitoring and regulating system for circulating water in a power plant relates to the technical field of power plant control, including a generator set main engine, a cooling tower, a measuring mechanism, a variable frequency pump and a control device; the cooling tower water outlet is connected to the generator set main engine water inlet through a cooling water pipe The water inlet of the cooling tower is connected to the water outlet of the main engine of the generator set through the return pipe, and the measuring mechanism is used to measure the water flow data in the cooling water pipe, and send the water flow data to the control device The generator set host sends the host load data to the control device through the data line; the control device generates a control signal according to the water flow data and the host load data to adjust the working frequency of the variable frequency pump, and the variable frequency pump is installed in the on the cooling water pipe. The present application provides a multi-monitoring and adjusting system for circulating water in a power plant, which can automatically adjust the amount of circulating water and has a more accurate adjustment method.
Description
Technical Field
The utility model relates to a control technical field of power plant, concretely relates to many monitoring governing systems of power plant's circulating water.
Background
The cold end system of the power plant is an important component of the generator set, the cold source loss of the power plant exceeds more than half of the input energy of the power plant, and the circulating water pumps arranged in the cold end system are super-power auxiliary machines, so that the energy-saving work of the cold end system of the steam turbine has great significance.
The circulating water system of the power plant has extremely high requirements on safety and reliability, the circulating water pump has high power, and the power plant is generally provided with the circulating water pump with fixed rotating speed at present. In addition, a spray cooling tower is generally adopted in a power plant, the cooling effect is achieved by directly contacting water with air for heat exchange, and at present, a manual operation mode is basically adopted, so that the spray cooling tower has the advantages of simple structure and convenience in operation, and has the defects that water flow is difficult to accurately control, and circulating cooling water (hereinafter, circulating water is simply referred to as circulating water) is excessive due to actual conditions, so that water resource waste and power loss of a circulating water pump are caused, or the circulating water cannot meet the water use requirement of a main machine of a generator set; in addition, although some intelligent control systems are also provided in the market to deal with the problems, the monitoring of the quantity of the circulating water is simply carried out so as to adjust correspondingly, on one hand, the monitoring mode is single, once the fault or damage occurs, the whole adjusting mode fails, on the other hand, the corresponding adjustment after the monitoring of the quantity of the circulating water is always hysteresis, and because the main engine of the generator set is influenced, the performance and the service life of the main engine of the generator set are influenced in the past.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that exists among the above-mentioned prior art, this application provides a power plant's circulating water is monitoring governing system more, can the automatic adjustment circulating water yield, and the adjustment mode is more accurate.
In order to realize the purpose of the utility model, the concrete technical scheme is as follows:
a power plant circulating water multi-monitoring and adjusting system comprises a generator set host, a cooling tower, a measuring mechanism, a variable frequency pump and a control device; the water outlet of the cooling tower is connected with the water inlet of the generator set host through a cooling water pipe, the water inlet of the cooling tower is connected with the water outlet of the generator set host through a water return pipe, and the measuring mechanism is used for measuring water flow data in the cooling water pipe and sending the water flow data to the control device; the generator set host sends host load data to the control device through a data line; and the control device generates a control signal according to the water flow data and the host load data to adjust the working frequency of the variable frequency pump, and the variable frequency pump is arranged on the cooling water pipe.
Preferably, the control device is a PLC or a DCS.
Preferably, the measuring means is a flow sensor.
Preferably, the measuring mechanism is arranged at a water inlet of the generator set host. The water flow data at the water inlet of the generator set host can truly represent the quantity of circulating water entering the generator set host, so that a measuring mechanism is arranged at the position, and the water flow data obtained by measuring is more accurate.
According to the technical scheme, the utility model discloses compare with prior art, on the one hand the circulating water pump through the fixed rotational speed that all is the application at present is changed into the inverter pump, deuterogamy controlling means and measuring mechanism, can realize the automatic adjustment circulating water yield, the data that on the other hand controlling means acquireed, except now common cooling water discharge data, the host computer load data of generating set host computer in addition, and host computer load data is the information that more can reflect generating set host computer and need how much the cooling water, carry out the cooling water adjustment through adding host computer load data, its adjustment is more accurate.
Drawings
The present application will be described in further detail below with reference to the accompanying drawings by way of specific embodiments.
Fig. 1 is an overall schematic view of the present invention;
wherein, 1, a generator set host; 2. a cooling tower; 3. a measuring mechanism; 4. a variable frequency pump; 5. a control device; 6. a cooling water pipe; 7. a water return pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present embodiments more clear, the technical solutions in the present embodiments will be described clearly and completely below with reference to the accompanying drawings in the present embodiments, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without any creative effort belong to the protection scope of the present application.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Examples
As shown in fig. 1, a power plant circulating water multi-monitoring and adjusting system comprises a generator set host 1, a cooling tower 2, a measuring mechanism 3, a variable frequency pump 4 and a control device 5; the water outlet of the cooling tower 2 is connected with the water inlet of the generator set host 1 through a cooling water pipe 6, the water inlet of the cooling tower 2 is connected with the water outlet of the generator set host 1 through a water return pipe 7, and the measuring mechanism 3 is used for measuring water flow data in the cooling water pipe 6 and sending the water flow data to the control device 5; the generator set host 1 sends host load data to the control device 5 through a data line; the control device 5 generates a control signal according to the water flow data and the host load data to adjust the working frequency of the variable frequency pump 4, and the variable frequency pump 4 is installed on the cooling water pipe 6. When the water flow data collected by the measuring mechanism 3 is lower than or higher than a, the control device 5 forms a control signal through an internal module thereof to regulate the variable frequency pump 4 and increase or decrease the rotating speed thereof until the water flow data collected by the measuring mechanism 3 in real time approaches a; when the host load data sent by the generator set host 1 is lower than or higher than b, the control device 5 forms a control signal through an internal module thereof to adjust the variable frequency pump 4 and reduce or increase the rotating speed thereof until the generator set host 1 reaches an optimal working state.
Wherein, the control device 5 is a PLC or a DCS. Use PLC or DCS as the controlling means who represents, wherein PLC or DCS play industrial control's common product for in the reality, the utility model discloses do not all change its structure and inside program, only have based on its inside and set for the procedure, set for control parameter (be water flow data, host computer load data) and set for control circuit on operation interface, wherein use water flow data to set for and realize the technique of control as the foundation, be prior art, can refer to authorized bulletin number CN208282676U, the name is: the chinese utility model patent of cooling tower intelligence water saving system does not detail here, the utility model discloses on the functional basis that controlling means itself has, only introduce a data more: host load data, all other principles are changed.
Wherein the measuring mechanism 3 is a flow sensor.
In addition, the measuring mechanism 3 is arranged at a water inlet of the main engine of the generator set.
It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. To the technical field of the utility model technical personnel, the foundation the utility model discloses an idea can also be made a plurality of simple deductions, warp or replacement.
Claims (4)
1. A power plant circulating water multi-monitoring and adjusting system is characterized by comprising a generator set host, a cooling tower, a measuring mechanism, a variable frequency pump and a control device; the water outlet of the cooling tower is connected with the water inlet of the generator set host through a cooling water pipe, the water inlet of the cooling tower is connected with the water outlet of the generator set host through a water return pipe, and the measuring mechanism is used for measuring water flow data in the cooling water pipe and sending the water flow data to the control device; the generator set host sends host load data to the control device through a data line; and the control device generates a control signal according to the water flow data and the host load data to adjust the working frequency of the variable frequency pump, and the variable frequency pump is arranged on the cooling water pipe.
2. The power plant circulating water multi-monitoring and regulating system of claim 1, wherein the control device is a PLC or a DCS.
3. The power plant circulating water multi-monitoring and regulating system as claimed in claim 1, wherein the measuring mechanism is a flow sensor.
4. The power plant circulating water multi-monitoring and regulating system as claimed in claim 1, wherein the measuring mechanism is disposed at a water inlet of the generator set main unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021733331.3U CN213240908U (en) | 2020-08-18 | 2020-08-18 | A multi-monitoring and regulating system for circulating water in power plants |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021733331.3U CN213240908U (en) | 2020-08-18 | 2020-08-18 | A multi-monitoring and regulating system for circulating water in power plants |
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| Publication Number | Publication Date |
|---|---|
| CN213240908U true CN213240908U (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021733331.3U Active CN213240908U (en) | 2020-08-18 | 2020-08-18 | A multi-monitoring and regulating system for circulating water in power plants |
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| Country | Link |
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| CN (1) | CN213240908U (en) |
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- 2020-08-18 CN CN202021733331.3U patent/CN213240908U/en active Active
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Effective date of registration: 20250220 Address after: 201500 Building 2, No. 181, Songyu Road, Tinglin Town, Jinshan District, Shanghai (Jinliang economic community) Patentee after: Shanghai Wanyao Huanpei Energy Technology Co.,Ltd. Country or region after: China Address before: 201505 room 2435, building 3, 19 Siping South Road, Tinglin Town, Jinshan District, Shanghai Patentee before: SHANGHAI HUANPEI INDUSTRIAL Co.,Ltd. Country or region before: China |