阅读说明：本技术 一种循环泵充水管路冲洗方法 (Method for flushing water filling pipeline of circulating pump ) 是由 徐成 姚荣祥 周巧霞 王松年 于 2019-12-21 设计创作，主要内容包括：一种循环泵充水管路冲洗方法。将循环泵出水口封堵,然后从进水口向泵内注入水,注水时,向水中添加活性炭粉末,然后再将进水口封堵,在进水口封堵处接入气泵和减压阀；通过气泵向泵内打入高压气体,使泵内水高速翻滚,然后静置,然后再进行打气,总共打气三次；打开循环泵出水口封堵,在进水口封堵处接入高压水泵,开启高压水泵,使内部水进行强力冲刷,共冲刷三次。本发明通过活性炭粉末,可吸附泵内壁残留的颗粒、腐蚀性物质等,基本无死角,通过气泵打入高压气体,可将内壁残留的有害物质带出,并溶解或混合于水中,并经活性炭颗粒吸附,最后通过高压水冲刷,有害物质可被快速排出泵外,可减少活性炭颗粒和有害物质的残留。(A method for flushing a water filling pipeline of a circulating pump. Plugging a water outlet of a circulating pump, then injecting water into the pump from a water inlet, adding activated carbon powder into the water during water injection, then plugging the water inlet, and connecting an air pump and a pressure reducing valve at the plugging position of the water inlet; pumping high-pressure gas into the pump through an air pump to enable water in the pump to roll at a high speed, standing, and then pumping for three times in total; and opening a water outlet plug of the circulating pump, connecting a high-pressure water pump at the water inlet plug, and starting the high-pressure water pump to enable the internal water to be flushed by force for three times. The invention can adsorb the particles, corrosive substances and the like remained on the inner wall of the pump through the activated carbon powder, basically has no dead angle, can take out the harmful substances remained on the inner wall by pumping high-pressure gas through the air pump, dissolve or mix the harmful substances in water, adsorb the harmful substances through the activated carbon particles, and finally discharge the harmful substances out of the pump quickly through high-pressure water washing, thereby reducing the residues of the activated carbon particles and the harmful substances.)

1. A method for using a furnace water pump inner cavity cleaning additive solution is characterized by comprising the following steps:

water injection:

plugging a water outlet of a circulating pump, then injecting water into the pump from a water inlet, wherein the water cannot be filled, adding activated carbon powder into the water during water injection, then plugging the water inlet, and connecting an air pump and a pressure reducing valve at the plugging position of the water inlet;

inflating:

pumping high-pressure gas into the pump through the air pump, enabling water in the pump to roll at a high speed, standing for 15 minutes, opening the pressure reducing valve until the pressure is reduced to 1 atmosphere, then pumping gas, repeating the first pumping condition and the standing time, and repeating the actions for three times in total;

scouring:

and opening a water outlet plug of the circulating pump, connecting a horn-shaped joint to the water outlet of the circulating pump, removing the air pump and the pressure reducing valve, connecting a high-pressure water pump to the water inlet plug, starting the high-pressure water pump to enable the internal water to be flushed by force for 10 minutes continuously, injecting water, standing for 5 minutes, then continuously flushing by high-pressure water for 8 minutes again, injecting water, standing for 5 minutes, and then continuously flushing by high-pressure water for 5 minutes again.

2. The method of claim 1, wherein the activated carbon powder particle size is between 50-100 nm.

3. The method of claim 1, wherein each inflation of the pump is stopped at 3 atmospheres.

4. The method of claim 1, wherein the diffusion port of the trumpet fitting is connected to an open circulation pump water outlet.

Technical Field

The invention relates to the technical field of circulating pumps, in particular to a method for flushing a water filling pipeline of a circulating pump.

Background

The boiler water circulating pump is a large-flow, low-lift single-stage centrifugal pump which is arranged in a boiler evaporation system and bears high temperature and high pressure to make working media perform forced flow, and structurally comprises a pump shell, pump blades, a bearing and a heat insulator. Boiler water circulation pumps are commonly used in start-up systems for forced circulation drum boilers and once-through boilers. A pump housing and an impeller. The pump casing is a hemispherical structure, and is characterized by that its wall thickness is small, its correspondent thermal stress is small, and the pump blade is a high-specific revolution centrifugal type, close to mixed flow type single-stage centrifugal pump, and the outlet of pump blade is equipped with pump blade to make partial kinetic energy be converted into pressure energy. Therefore, the pump blade is a critical structure, because the furnace water contains many impurities, and some hard impurities, the pump blade is impacted or rubbed by many impurities in the working process, so the pump blade is easily damaged, and the loss and the reduction of the working efficiency are caused.

Disclosure of Invention

Aiming at the problems in the related art, the invention provides a method for washing a water filling pipeline of a circulating pump, which can adsorb particles, corrosive substances and the like remained on the inner wall of the pump through activated carbon powder, basically has no dead angle, can take out the harmful substances remained on the inner wall by pumping high-pressure gas through an air pump, can quickly discharge the harmful substances out of the pump through high-pressure water washing, and can reduce the residues of the activated carbon particles and the harmful substances.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a method for flushing a water filling pipeline of a circulating pump, which adopts the following scheme:

firstly, water injection:

plugging a water outlet of a circulating pump, then injecting water into the pump from a water inlet, wherein the water cannot be filled, adding activated carbon powder into the water during water injection, then plugging the water inlet, and connecting an air pump and a pressure reducing valve at the plugging position of the water inlet;

secondly, inflating:

pumping high-pressure gas into the pump through the air pump, enabling water in the pump to roll at a high speed, standing for 15 minutes, opening the pressure reducing valve until the pressure is reduced to 1 atmosphere, then pumping gas, repeating the first pumping condition and the standing time, and repeating the actions for three times in total;

thirdly, scouring:

and opening a water outlet plug of the circulating pump, connecting a horn-shaped joint to the water outlet of the circulating pump, removing the air pump and the pressure reducing valve, connecting a high-pressure water pump to the water inlet plug, starting the high-pressure water pump to enable the internal water to be flushed by force for 10 minutes continuously, injecting water, standing for 5 minutes, then continuously flushing by high-pressure water for 8 minutes again, injecting water, standing for 5 minutes, and then continuously flushing by high-pressure water for 5 minutes again.

Furthermore, the particle size of the activated carbon powder is between 50 and 100 nm.

Further, in the step of pumping, pumping is stopped when the pressure reaches 3 atmospheric pressures each time.

Furthermore, a diffusion opening of the horn-shaped joint is connected with a water outlet of the circulating pump.

The invention has the beneficial effects that:

the invention can level and passivate the inner cavity of the furnace water pump, reduce the friction coefficient of the inner cavity of the furnace water pump and improve the corrosion resistance of the inner cavity of the furnace water pump.

The active carbon powder can adsorb particles, corrosive substances and the like remained on the inner wall of the pump, basically has no dead angle, the high-pressure gas is pumped into the pump through the air pump, the harmful substances remained on the inner wall can be taken out, dissolved or mixed in water, adsorbed by the active carbon particles, and finally washed by the high-pressure water, the flow rate is faster when water is discharged through the bell-mouth joint, the harmful substances can be quickly discharged out of the pump, and the residues of the active carbon particles and the harmful substances can be reduced.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.

According to an embodiment of the invention, a method for flushing a water filling pipeline of a circulating pump is provided.

The scheme is as follows:

firstly, water injection:

plugging a water outlet of a circulating pump, then injecting water into the pump from a water inlet, wherein the water cannot be filled, adding activated carbon powder into the water during water injection, wherein the particle size of the activated carbon powder is 50-100nm, then plugging the water inlet, and connecting an air pump and a pressure reducing valve at the plugging position of the water inlet;

secondly, inflating:

pumping high-pressure gas into the pump through the air pump, enabling water in the pump to roll at a high speed, stopping pumping until the pressure is 3 atmospheric pressures each time, standing for 15 minutes, opening the pressure reducing valve until the pressure is reduced to 1 atmospheric pressure, then pumping again, repeating the first pumping condition and the standing time, and repeating the actions for three times in total;

thirdly, scouring:

opening a water outlet plug of a circulating pump, connecting a horn-shaped joint to the water outlet of the circulating pump, connecting a diffusion opening of the horn-shaped joint with the water outlet of the circulating pump, removing an air pump and a pressure reducing valve, connecting a high-pressure water pump to the water inlet plug, starting the high-pressure water pump to enable internal water to be flushed by force for 10 minutes continuously, then injecting water and standing for 5 minutes, then continuously flushing by high-pressure water for 8 minutes again, then injecting water and standing for 5 minutes, and then continuously flushing by high-pressure water for 5 minutes again.

The invention adds active carbon powder when injecting water, so that the particles and corrosive substances remained on the inner wall of the pump can be adsorbed, the particle size reaches the nanometer level, the particles can enter the groove of the inner wall, basically no dead angle exists, high-pressure gas is pumped into the pump through the air pump during inflation, water in the pump rolls at high speed, so that the harmful substances remained on the inner wall can be taken out and dissolved or mixed in the water, the solution can be adsorbed by the active carbon particles, the middle of the pump is kept stand, enough time can be left for dissolution, the active carbon particles are fully adsorbed, and finally, the horn mouth joint is flushed by high-pressure water during flushing, the flow rate is faster during water outlet, the harmful substances can be quickly discharged out of the pump, and the residual of the active carbon particles and the harmful substances can be reduced by flushing for multiple times.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.