CN203586932U - Cleaning device for condensers of power plants - Google Patents

Abstract

The utility model discloses a cleaning device for condensers of power plants. The cleaning device comprises a cavity pipe. One end of the cavity pipe is closed while the other end of the cavity pipe is open, a check valve is arranged at the open end of the cavity pipe, exhaust holes are formed in the cavity pipe, mouth-shaped pipe-wall check valves are arranged at the exhaust holes, and gaps are formed in the pipe-wall check valves. The cleaning device is arranged in a cavity on a circulating water inlet side of a condenser at first when used; an air source is started when the condenser is cleaned, air can flow into the cavity via the check valve and squeezes the pipe-wall check valves via the exhaust holes, the gaps of the pipe-wall check valves can be opened when the pressure of the air is higher than a water-side pressure, the air flows into water via the gaps, and a large quantity of bubbles can be formed; the bubbles flow through a heat exchange pipe of the condenser along with water flow, and cleaning and heat exchange effects can be realized. The cleaning device has the advantages that the condenser of a power plant can be cleaned by the aid of the bubbles, the integral cleaning device is quite simple and only needs to be provided with the cavity pipe with the multiple check valves, the high-pressure air source is connected with the cleaning device during cleaning, the cleaning device is easy to operate, a good cleaning effect can be realized, and time and labor can be saved.

Description

A kind of power plant steam condenser cleaning device

Technical field

The utility model relates to the Removal Technology of steam condenser for a kind of power plant, especially a kind of cleaning device that utilizes bubble method to clear up power plant's steam condenser.

Background technology

Power plant's steam condenser is the vitals in power plant, and in rehydration organ pipe, stream is recirculated water, and what outside pipe, flow is the steam after steam turbine acting, utilizes recirculated water by the cooling efficiency that can improve steam turbine of steam after acting.After long-play, in steam condenser heat exchanger tube, can affect because of the microbe deposition in recirculated water heat exchanger tube heat transfer, thereby reduce the efficiency of steam turbine.Therefore when overhaul of steam turbine, conventionally need to carry out heat exchanger tube cleaning to steam condenser.During cleaning, first method is to adopt artificial flexible pipe back and forth to clean, and because heat exchanger tube is more, cleaning amount is larger.Second method is that glueballs cleans, and the pressure that utilizes the media such as air to produce pushes glueballs in heat exchanger tube, utilizes glueballs to drive attachment to move by inside pipe wall and reaches cleaning object.The third method is on-line cleaning, in the recirculated water side of steam condenser, arranges cleaning head, in running, flexible pipe is stretched in Tube Sheet of Heat Exchanger and is rotated, and reaches the object of on-line cleaning.But all there is shortcoming in various degree in this several method at present, wastes time and energy.

Utility model content

The technical problems to be solved in the utility model is to provide a kind of simple in structure, easy to operate and time saving and energy saving power plant's steam condenser cleaning device.

For solving the problems of the technologies described above, technical solution adopted in the utility model is: a kind of power plant steam condenser cleaning device, its key technology is: it comprises cavity pipe, the sealing of described cavity pipe one end, an end opening, opening one end of described cavity pipe is provided with non-return valve, described cavity tube wall is provided with steam vent, and described steam vent position is provided with tube wall non-return valve, on described tube wall non-return valve, has gap.

Described tube wall non-return valve is adhered on cavity pipe; Described tube wall non-return valve shape is mouth type.

Described cavity pipe, tube wall non-return valve, non-return valve material are silicon rubber.

Operation principle of the present utility model is: it utilizes the phenomenon of the microorganism adsorption bubble that tube wall adheres to, by squeezing into bubbles entrain microorganism, move, and utilize merging that gas ducks in drink, breaking produces knocking, current is produced to the principles such as disturbance and play the object that the microorganism to adhering to is cleaned inner surface of tube wall.During use, by the utility model, at the water inlet of recirculated water, pass into a large amount of air, in water, form a large amount of bubble populations.Bubble population is with current by steam condenser heat exchanger tube, and due to the variation of overpressure, the bubble population phenomenon such as can merge, break, produces the effects such as disturbance, knocking, absorption microorganism to tube wall current, reach the object of clean heat exchanger tube.Source of the gas used can be steam or the composite gas of air, nitrogen, inert gas, heating, preferably uses air, referring to accompanying drawing 3.Wherein the structure of the similar mouth shape of tube wall non-return valve, is bonded and fixed on cavity pipe, can seal gap outside under the effect of side hydraulic pressure, can open gap and produce a large amount of bubbles when inner wall pressure is greater than extraneous hydraulic pressure.

Adopt the beneficial effect that technique scheme produces to be: adopt the utility model can produce a large amount of bubbles, utilize bubble to clear up power plant's steam condenser, bubble by time current are produced to disturbance, cleaning performance is good; And package unit is very simple, adopt several with the cavity pipe of non-return valve, during cleaning, connect high-pressure air source.Whole device cost of manufacture is low, and easily operation, time saving and energy saving.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the utility model cleaning device;

Fig. 2 is the position view of the utility model cavity tube and tube wall non-return valve;

Fig. 3 is the schematic diagram while adopting the utility model to clean;

Wherein, 1, tube wall non-return valve; 2, cavity pipe; 3, non-return valve; 4, cavity; 5, steam vent; 6, gap; 7, bubble; 8, steam condenser.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

Referring to accompanying drawing 1 and accompanying drawing 2, this cleaning device (being also gas source pipe) comprises cavity pipe 2, one end sealing of described cavity pipe 2, other end opening, it installs a non-return valve 3 at openend, the tube wall of described cavity pipe 2 is provided with a plurality of steam vents that keep at a certain distance away 5, the tube wall non-return valve 1(that described steam vent 5 outsides, gas outlet are provided with mouth type is from the similar mouth type of its shape of Fig. 1), the tube wall non-return valve 1 of this mouth type can arrange one or more, on described tube wall non-return valve 1, offers gap 6.

Referring to accompanying drawing 2, described tube wall non-return valve 1 is adhered on cavity pipe 2.

The material of described cavity pipe 2, tube wall non-return valve 1 and non-return valve 3 is silicon rubber.

Referring to accompanying drawing 3, during use, this cleaning device is inserted in the cavity of steam condenser 8 recirculated water entrance sides, when needs clean, open source of the gas, gas can enter cavity 4 by non-return valve 3, then by steam vent 5 extruding tube wall non-return valves 1, when gas pressure is greater than water lateral pressure, open in the gap 6 of tube wall non-return valve 1, gas enters in water by gap 6, forms a large amount of bubble 7.Bubble carries out heat exchange with current, plays cleaning action.Described source of the gas is any one or a few mixing of the steam of air, nitrogen, inert gas, heating.

During use, be noted that the knocking meeting damage heat exchanger tube that breaking of bubble produces, produce cavitation, should carry out microorganism detection to steam condenser, when water quality meets the requirements, stop cleaning.

Claims (3)

1.Yi Zhong power plant steam condenser cleaning device, it is characterized in that: it comprises cavity pipe (2), the sealing of described cavity pipe (2) one end, an end opening, opening one end of described cavity pipe (2) is provided with non-return valve (3), described cavity pipe (2) tube wall is provided with steam vent (5), described steam vent (5) exit is provided with tube wall non-return valve (1), has gap (6) on described tube wall non-return valve (1).

2. power plant according to claim 1 steam condenser cleaning device, is characterized in that: described tube wall non-return valve (1) is adhered on cavity pipe (2); Described tube wall non-return valve (1) shape is mouth type.

3. power plant according to claim 1 steam condenser cleaning device, is characterized in that: described cavity pipe (2), tube wall non-return valve (1), non-return valve (3) material are silicon rubber.

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