Condensate pump inlet filter screen cleaning device

Abstract

The utility model discloses a condensate pump inlet filter screen cleaning device, which relates to the field of condensate pump cleaning devices and comprises a flushing device, an inlet filter screen and a cleaning nozzle which are mounted on a condensate pump tank. A condensate pump inlet filter screen device end cover is arranged on the upper portion of the condensate pump tank body, the flushing device is installed on the condensate pump inlet filter screen device end cover, and the bottom of the flushing device is located in the condensate pump tank body. The inlet filter screen is installed inside the condensate pump tank body, and the cleaning nozzle is installed inside the condensate pump tank body, located on the water inlet side of the inlet filter screen and connected with the flushing device; a plurality of cleaning nozzles are arranged, and the plurality of cleaning nozzles are connected with the flushing device through rotary joints; the cleaning efficiency is improved, the difficulty of overhaul and maintenance is reduced, the working cost and the labor cost are greatly reduced, and safe and stable operation of a thermal power plant is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of condensate pump cleaning devices, in particular to a condensate pump inlet filter cleaning device. Background Art

[0002] The main function of the condensate pump in a thermal power plant is to start the boiler and supply water, and it is also used as a water storage and replenishment container for the water level control of the condenser hot well. Specifically, the role of the condensate pump in the thermal power system is to transport the condensate in the condenser, and send it to the heat recovery system after boosting the pressure for further heating and deoxidation. In addition, the condensate pump is also responsible for boosting the pressure of the condensate in the condenser hot well (the exhaust device of the air-cooled unit), and then enters the deaerator through the shaft seal heater and the low-pressure heater for further heating and deoxidation. The pressurized condensate can also be used as cooling water for the tertiary bypass, shaft seal system, and low-pressure bypass desuperheater, as well as as a supplementary water source for users such as vacuum pumps, closed water tanks, and constant cooling water tanks.

[0003] Condensate pumps are important equipment for power generation in power plants. The inlet filter of the condensate pump is an important part of filtering and removing impurities from condensate. Dust accumulation on the filter will cause the water flow to be unsmooth, which will not only affect the efficient operation of the equipment, but also increase energy consumption and reduce the life of the equipment. Therefore, regular cleaning of the filter is an important step to ensure the safety and stable operation of the equipment.

[0004] The cleaning cycle of the filter screen at the inlet of the condensate pump is determined according to the actual situation. If blockage and dust accumulation are found, it needs to be replaced or cleaned manually in time. Traditional manual cleaning work requires manual operation, and the dirt and impurities deposited on the filter screen may not be completely removed, and it may need to be cleaned again in a short time. In addition, the process of manually cleaning the filter screen takes time and labor, which increases work costs and labor costs. Utility Model Content

[0005] The utility model aims to provide a condensate pump inlet filter screen cleaning device to solve the problem that the manual filter screen cleaning process in the prior art requires time and labor, which increases work cost and labor cost.

[0006] The utility model is realized through the following technical scheme: a condensate pump inlet filter cleaning device, comprising a flushing device, an inlet filter and a cleaning nozzle installed on a condensate pump tank body; a condensate pump inlet filter device end cover is provided on the upper part of the condensate pump tank body, the flushing device is installed on the end cover of the condensate pump inlet filter device, and the bottom of the flushing device is located inside the condensate pump tank body; the inlet filter is installed inside the condensate pump tank body, the cleaning nozzle is installed inside the condensate pump tank body and is located on the water inlet side of the inlet filter and is connected to the flushing device; a plurality of cleaning nozzles are provided, and the plurality of cleaning nozzles are connected to the flushing device through a rotating joint.

[0007] Preferably, it also includes a differential pressure monitoring device, which is installed on one side of the condensate pump tank and connected to the flushing device.

[0008] Preferably, it also includes a sewage discharge device, which is connected to the bottom of the condensate pump tank through a pipeline.

[0009] Preferably, a valve is provided on the pipeline.

[0010] Preferably, the inlet filter is installed on both sides of the condensate pump tank in an inclined shape as a whole.

[0011] Preferably, the condensate pump tank body is a funnel-shaped structure as a whole.

[0012] A material discharge mechanism, wherein the material discharge mechanism is arranged on the upper part of the frame;

[0013] Compared with the prior art, the utility model has the following beneficial effects: when the inlet filter needs to be cleaned, the flushing device is opened, and then the cleaning liquid water is introduced, and then the cleaning nozzle starts to clean the inlet filter. Since the cleaning nozzle is installed on the water inlet side of the inlet filter and multiple nozzles are provided, the inlet filter can be flushed in all directions, thereby improving the cleaning efficiency, reducing the difficulty of inspection and maintenance, greatly reducing work costs and labor costs, and ensuring the safe and stable operation of the thermal power plant.

[0014] Adopting the automatic cleaning device of the filter screen at the inlet of the condensate pump without opening the cover, which improves the cleaning efficiency, reduces the difficulty of inspection and maintenance, greatly reduces the work cost and manpower cost, and ensures the safe and stable operation of the thermal power plant;

[0015] This device can provide a basis for cleaning the inlet filter according to the monitoring status of the condensate pump inlet filter differential pressure monitoring device, and notify the thermal power plant operation and duty personnel to take effective measures in time, turning the condensate pump inlet filter cleaning work from the traditional planned passive cleaning into the scope of condition maintenance.

[0016] This device can automatically judge the cleaning effect according to the indicator monitoring of the sewage discharge device, and automatically exit the flushing and sewage discharge system;

[0017] This device can realize automatic cleaning of the condensate pump inlet filter throughout the entire process, and is also suitable for cleaning the filters of other auxiliary systems, greatly improving the automation level of thermal power plants. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 This is a schematic diagram of the installation structure of the differential pressure monitoring device of the utility model.

[0020] Figure 3 This is a schematic diagram of the installation structure of the cleaning nozzle of the utility model.

[0021] Figure 4 This is a schematic diagram of the installation structure of the differential pressure monitoring device of the utility model from another angle.

[0022] Explanation of the reference numerals: 1. End cover of the inlet filter device of the condensate pump; 2. Differential pressure monitoring device; 3. Flushing device; 4. Sewage discharge device; 5. Inlet filter; 6. Cleaning nozzle; 7. Condensate pump tank. DETAILED DESCRIPTION

[0023] The present invention is further described in conjunction with specific embodiments, but is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0024] As shown in the reference figure, the utility model discloses a condensate pump inlet filter cleaning device, comprising a flushing device 3, an inlet filter 5 and a cleaning nozzle 6 installed on a condensate pump tank body 7; a condensate pump inlet filter device end cover 1 is provided on the upper part of the condensate pump tank body 7, the flushing device 3 is installed on the upper part of the condensate pump inlet filter device end cover 1 and its bottom is located inside the condensate pump tank body 7; the inlet filter 5 is installed inside the condensate pump tank body 7, the cleaning nozzle 6 is installed inside the condensate pump tank body 7 and is located on the water inlet side of the inlet filter 5 and is connected to the flushing device 3; the A plurality of cleaning nozzles 6 are provided, and a plurality of cleaning nozzles 6 are connected to the flushing device 3 through a rotating joint; in the present embodiment, the condensate pump tank body 7 is a funnel-shaped structure as a whole; when the inlet filter 5 needs to be cleaned, the flushing device 3 is opened, and then the cleaning liquid water is introduced, and then the cleaning nozzle 6 starts to clean the inlet filter 5. Since the cleaning nozzle 6 is installed on the water inlet side of the inlet filter 5 and a plurality of cleaning nozzles are provided, the inlet filter can be flushed in all directions, thereby improving the cleaning efficiency, reducing the difficulty of inspection and maintenance, greatly reducing the working cost and labor cost, and ensuring the safe and stable operation of the thermal power plant.

[0025] It also includes a differential pressure monitoring device 2, which is installed on one side of the condensate pump tank 7 and connected to the flushing device 3. The flushing device 3 can be automatically cleaned according to the monitoring result of the differential pressure monitoring device 2 on the inlet filter 5 and according to actual needs; specifically, when the differential pressure monitoring device 2 detects that the inlet filter 5 is dirty and the differential pressure of the inlet filter 5 increases to the first high value, it issues a status prompt that the inlet filter cleaning needs to be prepared, reminding the thermal power plant operation duty personnel to prepare to switch to the standby system and select an opportunity to carry out the inlet filter cleaning work; when the differential pressure of the inlet filter 5 increases to the second high value, the thermal power plant operation duty personnel manually / automatically completes the condensate pump switching work, and the condensate pump inlet filter automatic cleaning device is automatically put into operation.

[0026] It also includes a sewage discharge device 4, which is connected to the bottom of the condensate pump tank 7 through a pipeline; a valve is provided on the pipeline; the inlet filter 5 is installed on both sides of the condensate pump tank 7 in an inclined shape as a whole; when in use, when the flushing device 3 is used, the flushing valve is opened, the flushing medium flow is adjusted, and the cleaning nozzle 6 performs positive flushing on the condensate pump inlet filter 5 in all directions, and the sewage discharge device 4 is started synchronously. After the cleaning is completed, according to the pressure difference change of the differential pressure monitoring device 2, it is automatically judged that the cleaning is completed, and the flushing device 3 and the sewage discharge device 4 are closed; after the cleaning is completed, the condensate pump sequential control system is put into equipment standby.

[0027] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A condensate pump inlet filter cleaning device, characterized in that: It comprises a flushing device (3), an inlet filter (5) and a cleaning nozzle (6) installed on a condensate pump tank body (7); a condensate pump inlet filter device end cover (1) is provided on the upper part of the condensate pump tank body (7); the flushing device (3) is installed on the condensate pump inlet filter device end cover (1), and the bottom of the flushing device (3) is located inside the condensate pump tank body (7); the inlet filter (5) is installed inside the condensate pump tank body (7), and the cleaning nozzle (6) is installed inside the condensate pump tank body (7) and is located on the water inlet side of the inlet filter (5) and connected to the flushing device (3); a plurality of cleaning nozzles (6) are provided, and the plurality of cleaning nozzles (6) are connected to the flushing device (3) via a rotating joint.

2. The condensate pump inlet filter cleaning device according to claim 1, characterized in that: It also includes a differential pressure monitoring device (2), which is installed on one side of the condensate pump tank (7) and connected to the flushing device (3).

3. The condensate pump inlet filter cleaning device according to claim 2, characterized in that: It also includes a sewage discharge device (4), which is connected to the bottom of the condensate pump tank (7) through a pipeline.

4. The condensate pump inlet filter cleaning device according to claim 3, characterized in that: A valve is arranged on the pipeline.

5. The condensate pump inlet filter cleaning device according to claim 1, characterized in that: The inlet filter screen (5) is installed on both sides of the condensate pump tank (7) in an inclined manner as a whole.

6. The condensate pump inlet filter cleaning device according to claim 5, characterized in that: The condensate pump tank (7) is a funnel-shaped structure as a whole.

Images