Condenser circulating water regulating device

Abstract

The utility model discloses a kind of condenser circulating water regulating devices, including first temperature sensor and second temperature sensor respectively installed in circulating water inlet end and outlet end, flow control valve installed in circulating water inlet end, vacuum gauge installed in condenser for measuring vacuum degree, condensing water output end of condenser is installed with third temperature sensor, flow control valve output end is installed with flow sensor and water pressure sensor, circulating water outlet end is installed with scale showing pipe, filter plate is installed in scale showing pipe, scale showing pipe side is provided with water distribution pipe, water distribution pipe both ends are respectively fixedly connected in scale showing pipe both ends, scale showing pipe is installed with stop valve group, stop valve group at least includes two control valves respectively installed in scale showing pipe both ends, further include control module, control module signal is connected with early warning device. The utility model is monitored to the relevant parameter of circulating water and condenser by setting different sensor, convenient to make circulating water flow keep in proper range.

Description

Technical Field

[0001] This utility model belongs to the technical field of condensers and relates to a condenser circulating water regulating device. Background Technology

[0002] A condenser is a heat exchanger used in power plants and other factories to condense exhaust steam from a steam turbine into water. Condensers are divided into two types: air-cooled condensers and water-cooled condensers. Water-cooled condensers use circulating water to cool the high-temperature steam, and the flow rate of this circulating water directly affects the condenser's efficiency. A low flow rate may result in slow cooling, while a high flow rate may lead to energy waste in the circulating water system. Therefore, a condenser circulating water regulating device is needed to adjust the circulating water flow. Utility Model Content

[0003] To address the aforementioned problems, this invention proposes a condenser circulating water regulating device, which effectively solves the problems in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A condenser circulating water regulating device, comprising:

[0006] The first temperature sensor is installed at the inlet of the circulating water.

[0007] The second temperature sensor is installed at the outlet of the circulating water.

[0008] A flow control valve, wherein the flow control valve is installed at the inlet end of the circulating water;

[0009] A vacuum gauge, which is installed in the condenser, is used to measure the vacuum level;

[0010] The third temperature sensor is installed at the condensate output end of the condenser.

[0011] A flow sensor is installed at the output end of the flow control valve;

[0012] A water pressure sensor is installed at the output end of the flow control valve;

[0013] A scale indicator tube is installed at the outlet of the circulating water, and a filter plate is installed inside the scale indicator tube;

[0014] The water distribution pipe is fixedly connected to both ends of the scale indicator pipe.

[0015] A shut-off valve assembly, comprising at least two control valves respectively installed at both ends of the scale indicator tube;

[0016] The control module includes a data input module and a display module;

[0017] The warning device is signal-connected to the control module.

[0018] Optionally, the diameter of the scale indicator tube is larger than the diameter of the circulating water pipeline.

[0019] Optionally, a drain branch pipe is provided at the bottom of the scale indicator pipe, the drain branch pipe is located on the side of the filter plate near the circulating water outlet, and the drain branch pipe is equipped with the control valve.

[0020] Optionally, the flow control valve is a butterfly valve, and the flow control valve is connected to an angle sensor.

[0021] Optionally, the water pressure sensor is installed at the outlet of the circulating water.

[0022] Optionally, the control valves are installed at both ends of the water distribution pipe.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. By setting different temperature sensors, vacuum gauges, flow sensors and water pressure sensors, the relevant parameters of circulating water and condenser are monitored, and the flow control valve is adjusted by the control module to keep the circulating water flow within a suitable range.

[0025] 2. By setting up a scale indicator tube and installing a filter plate inside the scale indicator tube, impurities and scale fragments that may be flushed out are intercepted. When the parameters are abnormal, the water flow in the scale indicator tube is cut off by the control valve, and the location of the filter plate is sampled to facilitate the prediction of the scaling situation in the cooling tubes of the condenser. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0027] Reference numerals: 11, First temperature sensor; 12, Second temperature sensor; 13, Flow control valve; 131, Angle sensor; 2, Vacuum gauge; 3, Third temperature sensor; 41, Flow sensor; 42, Water pressure sensor; 5, Scale indicator tube; 51, Filter plate; 52, Water distribution pipe; 53, Control valve; 54, Drainage branch pipe. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1 This utility model discloses a condenser circulating water regulating device, including a first temperature sensor 11 and a second temperature sensor 12 respectively installed at the circulating water inlet and outlet, a flow control valve 13 installed at the circulating water inlet, a vacuum gauge 2 installed on the condenser for measuring vacuum, a third temperature sensor 3 installed at the condensate output end of the condenser, a flow sensor 41 and a water pressure sensor 42 installed at the output end of the flow control valve 13, a scale indicator tube 5 installed at the circulating water outlet, a filter plate 51 installed inside the scale indicator tube 5, a water distribution pipe 52 provided on one side of the scale indicator tube 5, the two ends of the water distribution pipe 52 being fixedly connected to the two ends of the scale indicator tube 5, a shut-off valve assembly installed on the scale indicator tube 5, the shut-off valve assembly including at least two control valves 53 respectively installed at the two ends of the scale indicator tube 5, and a control module, which includes a data input module and a display module, and the control module is signal-connected to an early warning device.

[0030] Specifically, vacuum level is a crucial reference parameter for condenser operation. Vacuum level is acquired using vacuum gauge 2 and fed back to the control module. The control module then adjusts the opening of flow control valve 13, thereby regulating the circulating water flow rate. Increasing the flow rate improves cooling efficiency and vacuum level; however, this increase reduces the utilization rate of the circulating water temperature. Therefore, the temperature rise of the circulating water is monitored using first temperature sensor 11 and second temperature sensor 12, and the temperature difference at the condenser terminals is monitored using second temperature sensor 12 and third temperature sensor 3, thus monitoring the utilization rate of the circulating water temperature. By setting the parameters of the control module, the vacuum level's influence on the circulating water flow rate is maintained within a suitable range.

[0031] In this way, by setting different temperature sensors, vacuum gauge 2, flow sensor 41 and water pressure sensor 42, the relevant parameters of circulating water and condenser can be monitored, and the flow control valve 13 can be adjusted by the control module to keep the circulating water flow within a suitable range.

[0032] In some feasible configurations, the control module can be a PLC control module. The control module connects to the first temperature sensor 11, the second temperature sensor 12, the flow control valve 13, the vacuum gauge 2, the flow sensor 41, the water pressure sensor 42, and an alarm. The control module includes a data input module and a display module, facilitating operator adjustment of appropriate ranges for parameters such as vacuum level, differential pressure, and temperature rise. If any value remains abnormal after adjustment, a fault alarm is triggered by the alarm, which can be a buzzer alarm. The flow sensor 41 and the water pressure sensor 42 monitor the flow rate and water pressure at the circulating water inlet, feeding back to the control module to facilitate adjustment of the flow control valve 13's opening.

[0033] In some feasible approaches, when the circulating water supply pump is a variable frequency pump or other adjustable pump, the control module is connected to the supply pump signal and the circulating water flow rate is adjusted by regulating the supply pump.

[0034] When adjusting the circulating water flow rate fails to reach a suitable value range, it may be due to scale buildup inside the pipes reducing heat exchange efficiency. By setting up a scale indicator pipe 5 and installing a filter plate 51 inside the scale indicator pipe 5, impurities and scale fragments that may be flushed out can be intercepted. When the parameters are abnormal, the water flow through the scale indicator pipe 5 is cut off by the control valve 53, and the position of the filter plate 51 is sampled to facilitate the prediction of scale buildup in the cooling pipes inside the condenser.

[0035] As one specific embodiment of the condenser circulating water regulating device provided in the application, the diameter of the scale indicator pipe 5 is larger than the diameter of the circulating water pipeline.

[0036] Overall, the filter plate 51 installed inside the scale indicator tube 5 reduces the cross-sectional area for water flow at that location, and by increasing its diameter, reduces the impact on the flow of circulating water.

[0037] Furthermore, a drain branch pipe 54 is provided at the bottom of the scale indicator pipe 5. The drain branch pipe 54 is located on the side of the filter plate 51 near the circulating water outlet. A control valve 53 is provided on the drain branch pipe 54.

[0038] It should be understood that the drainage branch pipe 54 facilitates the release of water stored in the scale indicator pipe 5, and facilitates sampling to understand the scaling situation.

[0039] Furthermore, control valves 53 are installed at both ends of the water distribution pipe 52.

[0040] It should be understood that by setting the control valve 53, it is easy to cut off the water flow in the water distribution pipe 52, so that the circulating water can completely pass through the scale indicator pipe 5, which makes it easier to understand the scaling situation more accurately.

[0041] In some feasible ways, both the scale indicator pipe 5 and the water distribution pipe 52 are round pipes and are connected to the control valve 53 through flanges. To facilitate the cleaning of the filter plate 51, the filter plate 51 includes a perforated plate. A round pipe is fixedly connected to the outside of the perforated plate, and flanges are provided at both ends of the round pipe. The filter plate 51 is connected to the scale indicator pipe 5 and the control valve 53 through the flanges.

[0042] As another specific embodiment of the condenser circulating water regulating device provided in the application, the flow control valve 13 is a butterfly valve, and the flow control valve 13 is connected to an angle sensor 131.

[0043] In combination with specific application scenarios, by setting an angle sensor 131, it is easy to know the opening degree of the flow control valve 13, and then to know the impact of the opening degree of the flow control valve 13 on the circulating water flow, so as to adjust the water flow more quickly according to the matching relationship between the opening degree and the flow.

[0044] As one specific embodiment of the condenser circulating water regulating device provided in the application, a water pressure sensor 42 is installed at the circulating water outlet.

[0045] It should be understood that the pressure loss of the circulating water after passing through the condenser is obtained by measuring the pressure difference between the two water pressure sensors 42, and the blockage status in the cooling pipe is obtained based on the change in pressure loss.

[0046] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A condenser circulating water regulating device, characterized in that, include: The first temperature sensor (11) is installed at the inlet of the circulating water. The second temperature sensor (12) is installed at the outlet of the circulating water. A flow control valve (13) is installed at the inlet of the circulating water; Vacuum gauge (2), which is installed on the condenser and used to measure the vacuum level; The third temperature sensor (3) is installed at the condensate output end of the condenser. A flow sensor (41) is installed at the output end of the flow control valve (13); A water pressure sensor (42) is installed at the output end of the flow control valve (13); A scale indicator tube (5) is installed at the outlet of the circulating water, and a filter plate (51) is installed inside the scale indicator tube (5). Water distribution pipe (52), the two ends of which are fixedly connected to the two ends of scale indicator pipe (5); The shut-off valve assembly includes at least two control valves (53) respectively installed at both ends of the scale indicator tube (5); The control module includes a data input module and a display module; The warning device is signal-connected to the control module.

2. The condenser circulating water regulating device according to claim 1, characterized in that: The diameter of the scale indicator tube (5) is larger than the diameter of the circulating water pipe.

3. A condenser circulating water regulating device according to claim 2, characterized in that: The scale indicator pipe (5) is provided with a drain branch pipe (54) at the bottom. The drain branch pipe (54) is located on the side of the filter plate (51) near the outlet of the circulating water. The drain branch pipe (54) is provided with the control valve (53).

4. A condenser circulating water regulating device according to claim 1, characterized in that: The flow control valve (13) is a butterfly valve, and the flow control valve (13) is connected to an angle sensor (131).

5. A condenser circulating water regulating device according to claim 1, characterized in that: The water pressure sensor (42) is installed at the outlet of the circulating water.

6. A condenser circulating water regulating device according to claim 2, characterized in that: The control valves (53) are installed at both ends of the water distribution pipe (52).

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