KR20170039523A

KR20170039523A - Online condenser cleaning system

Info

Publication number: KR20170039523A
Application number: KR1020150138775A
Authority: KR
Inventors: 양은심
Original assignee: 코리아토탈엔지니어링 주식회사
Priority date: 2015-10-01
Filing date: 2015-10-01
Publication date: 2017-04-11
Also published as: KR101788282B1

Abstract

The present invention relates to a cleaning system for a condenser of a power plant, to prevent foreign matters or corrosion from being attached or generated inside a tube of a condenser forming generation equipment inside a power plant. According to the present invention, the cleaning system comprises: a ball collector inserting a sponge ball into an inlet side of a condenser tube to remove foreign matters attached on the inner surface of the condenser tube while circulating the sponge ball with coolant in the condenser tube; and a call collector installed in an outlet side of the condenser tube to filtrate the sponge ball included in the coolant while circulating the coolant. The ball collector comprises: a tubular housing installed in the condenser tube to form a moving pipe of the coolant; a V-screen including a pair of screen plates narrowing in a V shape towards a circulation direction of the coolant to be installed inside the housing, and filtrating the sponge ball to guide the filtrated sponge ball to the center while circulating the coolant to the housing; a funnel installed in the center of the V-screen to form a trapping space of the sponge ball and connected to the ball collector to supply the sponge ball to the ball collector; and a hydrofoil installed adjacent to the funnel and the center of the V-screen while forming a pillar shape and generating a vortex while blocking the coolant and the sponge ball moved to the funnel.

Description

{ONLINE CONDENSER CLEANING SYSTEM}

The present invention relates to a cleaning system for a condenser, and more particularly, to a condenser cleaning system for circulating a sponge ball in a tube of a condenser, which is one of power generating facilities of a power plant, together with cooling water to remove foreign substances, To a cleaning system for a condenser of a power plant.

Recently, renewable energy and alternative energy are rapidly spreading, but the production and dissemination of power still depend on existing thermal and nuclear power plants.

The efficiency of the condenser in plants such as the thermal power and nuclear power plants described above is very important.

Fig. 1 is a configuration diagram of a power generation plant in which a condenser is installed.

The power plant rotates the turbine blades of the steam turbine 1 as shown in Fig. 1, and the low-temperature and low-pressure steam exhausted is condensed by the cooling water in the condenser 2, and is condensed in the condenser 2 The water heated by the feed water heater 3 is supplied to the boiler 4 and heated by the fuel so that the steam is supplied to the water heater 3, The high-temperature and high-pressure steam coming from the boiler 4 is inputted to the steam turbine 1 to rotate the turbine blades of the steam turbine 1.

A conventional condenser 2 is composed of a heat exchanger composed of a plurality of tubes through which cooling water flows, and the steam discharged from the steam turbine 1 is heat-exchanged with the cooling water of the tubes to condense the steam.

The operation of the power generation plant in which the condenser 2 is constructed is as follows.

When the low-temperature low-pressure steam generated from the boiler 1 rotates the turbine blades of the steam turbine 1 and is exhausted to the condenser 2, the steam is condensed by the cooling water flowing through the tubes of the condenser 2, The cooling water that is collected and exchanged with the steam is discharged to the outside and is discarded.

Then, the condensed water collected in the storage tank is sent to the feedwater heater (3) by the condensate pump, and heated by the residual energy of the steam to be sent to the boiler.

The high-temperature and high-pressure steam generated in the boiler 4 is input to the steam turbine 1 and is supplied to the steam turbine 1 through the turbine blades 1, .

Here, when the condenser 2 is adhered or corroded to the inside of the tube through which the cooling water flows, the condensing efficiency of the steam is lowered, which causes the overall efficiency of the power plant to be lowered.

Therefore, there is a demand for a technique for removing foreign matter adhering to the inside of the tube of the condenser 2.

Korean Patent Publication No. 10-2011-0001174

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art as described above, and it is an object of the present invention to provide a condenser tube for circulating a sponge ball together with cooling water, It is an object of the present invention to provide a cleaning system for a condenser of a power plant capable of filtering and returning sponge balls discharged together with cooling water from a condenser tube again.

The present invention also provides a cleaning system for a condenser of a power plant capable of preventing a sponge ball from sticking to a screen plate for filtering a sponge ball and generating a vortex in the cooling water guided by the screen plate, The purpose is to do.

According to an aspect of the present invention, there is provided a cleaning system for a condenser of a power plant, the system comprising: a condenser cleaning system for preventing foreign matter from being fixed or corroded in a tube of a condenser, A ball collector for injecting a sponge ball into the inlet side of the tube to circulate the sponge ball with the cooling water through the condenser tube while removing foreign substances adhering to the inner surface of the condenser tube; And a ball collector installed at an outlet side of the condenser tube for filtering the sponge balls contained in the cooling water while communicating the cooling water and collecting the sponge balls into the ball collector, A tubular housing having a moving path; And a pair of screen plates which are narrowed in a V-shape in the direction of flow of the cooling water. The V-screen is installed inside the housing and filters the sponge balls while communicating the cooling water to the housing to guide the filtered sponge balls to the center. ; A funnel installed at the center of the V screen to form a collecting space for the sponge balls and connected to the ball collectors to supply the sponge balls to the ball collectors; And a hydrofoil installed adjacent to the center of the funnel and the V screen in a columnar shape to generate cooling water moving to the funnel and a vortex while blocking the sponge ball.

For example, the funnel may include a vertical tube communicating with a center of the V screen and constituting a vertical channel through which the sponge ball is collected; A pair of vertical screen screens for shielding the upper and lower ends of the vertical tube in a communicable manner and discharging the cooling water of the vertical tube to the housing; And a recovery pipe connected to the ball collector in a state of being communicated to the side of the vertical tube to recover the sponge ball from the vertical tube to the ball collector.

In addition, the pair of perpendicular screen screens may be installed at both ends of the vertical tube in an inclined state to form a V-shape that narrows in the cooling water flow direction of the housing.

The V screen further includes a screen guide installed on each of the back surfaces of the pair of screen plates to guide the cooling water passing through the screen panel in a linear shape while being extended in parallel with the communication direction of the housing. .

The ball collecting device may be configured such that the pair of screen plates constituting the V screen are respectively installed in the housing in a rotatable state and the sponge balls are provided on the screen plate while rotating the pair of screen plates, And a screen plate flow unit for preventing the display panel from sticking.

For example, the screen plate flow unit may include a pair of rotation shafts rotatably mounted on the housing and connected to the back surfaces of the pair of screen plates to rotate the screen plates, respectively. A pair of pressing rods connected to the pair of rotating shafts while being installed on the outside of the housing and pressing and rotating the rotating shafts through linear motion; And a presser for linearly moving the pressing rod.

The ball collectors may be disposed adjacent to the front ends of the pair of screen plates constituting the V screen so as to guide cooling water guided to the center of the screen plates while guiding the flow path of the housing in a narrowed state, And a vortex vane generating a vortex in the sponge ball.

According to the cleaning system for a condenser of a power plant according to the present invention, a sponge ball supplied from a ball collector is supplied to an inlet side of a condenser tube and circulates together with cooling water to hit an inner circumferential surface of the tube, Particularly, since the sponge balls supplied to the condenser tube are collected by the ball collectors and collected by the ball collectors, foreign substances can be removed by recirculating the sponge balls.

Accordingly, the present invention can prevent corrosion of the condenser or accumulation due to foreign matter, thereby preventing deterioration of the efficiency of the power generation facility.

More specifically, the present invention is constituted by a screen plate in which a screen member constituting a ball collecting unit is arranged in a V-shape. By guiding the sponge ball to a central funnel, the sponge balls collected in the funnel can be collected by the ball collector. Since the vortex is generated at the center of the V screen by the hydrofoil, the sponge balls can be smoothly collected in the funnel without being spilled on the screen.

Further, since the screen plate constituting the V screen is rotated while being rotated by the screen plate flow unit, the sponge ball can be prevented from sticking to the screen plate and the vortex vane is installed at the tip of the screen plate, The cooling water guided to the center of the cooling water can be guided while causing vortex to maintain smooth flow.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing a conventional power generation plant. Fig.
2 is a configuration diagram showing a cleaning system for a condenser of a power plant according to the present invention.
3 is a perspective view of a ball reclaimer according to the present invention.
4 is a longitudinal sectional view showing a ball reclaimer according to the present invention.
5 is a bottom perspective view showing the internal structure of the ball collecting machine according to the present invention.
6 is a bottom perspective view showing a state in which the ball collecting machine shown in Fig. 5 is viewed from the rear.
7 is an incisional perspective view showing the funnel shown in Fig.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted.

Embodiments in accordance with the concepts of the present invention can make various changes and have various forms, so that specific embodiments are illustrated in the drawings and described in detail in this specification or application. It is to be understood, however, that it is not intended to limit the embodiments according to the concepts of the present invention to the particular forms of disclosure, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, . On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between. Other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises ", or" having ", or the like, specify that there is a stated feature, number, step, operation, , Steps, operations, components, parts, or combinations thereof, as a matter of principle.

As shown in FIG. 2, the cleaning system for a condenser of a power plant according to the present invention is provided with a ball collector 10 and a ball recovery device 10, as shown in FIG. 2, for preventing foreign substances from being adhered or corroded in a tube of a condenser, (20).

The ball collector 10 circulates the sponge balls together with the cooling water by supplying a plurality of sponge balls to the condenser, thereby removing impurities adhered to the condenser tube through the contact of the sponge balls. As shown in FIG. 2, To supply the sponge balls to the inlet of the condenser tube.

The ball collecting unit 20 is connected to the outlet side of the condenser as shown in FIG. 2, and filters the sponge balls discharged from the condenser together with the cooling water while communicating the cooling water, and collects the collected water into the ball collector 10.

The ball collecting unit 20 may include a housing 100, a V screen 200, a funnel 300, and a hydrofoil 400 as shown in FIGS.

As shown in the figure, the housing 100 has a tubular shape and is installed in a conduit on the outlet side of the condenser to form a flow path of cooling water. The housing 100 is connected to the ball collector 10 through a funnel 300 to be described later to recover the sponge ball .

V screen 200 is a component that filters sponge balls while communicating cooling water while being housed in the housing 100. [

As shown in FIGS. 4 and 5, the V screen 200 includes a pair of screen plates 210 and is arranged in a V shape that narrows in the direction of communication of the cooling water. And collected in the funnel 300 to be described later.

That is, the cooling water flowing into the housing 100 passes through the screen plate 210 and is discharged to the outlet side of the housing 100. The sponge balls contained in the cooling water are filtered by the screen plate 210, .

Meanwhile, as shown in FIGS. 5 and 6, the screen plates 210 are provided with a screen guide 220 on the rear surface thereof.

The screen guide 220 extends in a direction parallel to the communication direction of the housing 100 to guide the cooling water passing through the screen plate 210 in a straight line, unlike the inclination of the screen plate 210 as shown in the drawing.

Accordingly, the cooling water is guided straight by the screen guide 220 while passing through the V-shaped screen plate 210, so that the cooling water is discharged to the outlet side of the housing 100 without being tilted toward the center of the screen plate 210 .

In addition, the screen plates 210 are installed in a rotatable state inside the housing 100 by the screen plate flow unit 500 while being V-shaped, so that the sponge balls can be prevented from sticking while being flowed through the rotation .

Specifically, the screen plate flow unit 500 may be configured to include a pair of rotation shafts 510, a pair of pressure rods 520, and a pusher 530 as shown in Figs.

The rotating shaft 510 is rotatably installed in the housing 100 in a vertical state as shown in the drawing, and is coupled to the back surface of each screen plate 210 to rotatably support the screen plates 210.

One end of the pressing rod 520 is coupled to a pair of rotating shafts 510 in a state where the pressing rod 520 is installed outside the housing 100 and the rotating shaft 510 is pressed and rotated while being linearly moved by a pressing unit 530 .

The pressurizer 530 is connected to the pair of pressurizing rods 520 as shown in Figs. 5 and 6, and is operated by the power to rectilinearly move the pressurizing rod 520. [

The pressurizer 530 may be constituted by, for example, a linear gear unit so as to advance and retract the pressing rod 520, and may have any other configuration as long as the pressing rod 520 can be moved forward or backward.

The pressing rod 520 is rotatably coupled to the rotary shaft 510 and the pressurizer 530 so as to be rotatably connected to the rotary shaft 510. The pressing rod 520 is rotatably coupled to the rotary shaft 510 and the pressurizer 530, .

The pair of screen plates 210 repeatedly rotates together with the rotating shaft 510 as the rotating shaft 510 rotates due to the forward and backward movement of the pressing rod 520 by the pusher 530, The sponge ball is released from the screen plate 210.

The flow of the screen plate 210 may be manually performed by the administrator through the control of the pusher 530 or automatically by operating the pusher 530 at a predetermined time interval.

On the other hand, a vortex vane 600 may be installed in front of the V screen 200, as shown in FIGS.

The vortex vanes 600 are installed at the front end of the V screen 200 in a state of being fixed to the housing 100 and are guided in a shape of narrowing the flow path of the housing 100 to generate a vortex in the cooling water.

That is, the vortex vane 600 is installed so as to narrow the flow path of the housing 100 in a form corresponding to the V screen 200, thereby increasing the flow rate of the cooling water to generate vortex.

Accordingly, the cooling water and the sponge balls are guided to the V screen 200 without being stagnated.

The funnel 300 is a component that collects the sponge balls guided to the center of the V screen 200 and supplies the collected sponge balls to the ball collector 10.

The funnel 300 may include a vertical tube 310, a vertical tube screen 320, and a return tube 330 as shown in FIGS. 6 and 7.

The vertical tube 310 is formed in the shape of a tube that opens toward the V screen 200 and is connected to the center of the V screen 200. The vertical tube 310 is connected to the center of the V screen 200 by sponge balls Collect.

As shown in FIGS. 6 and 7, the vertical screen 320 is formed of a plate having a plurality of communication holes to shield the upper end and the lower end of the vertical tube 310, respectively, so as to communicate with the sponge balls. The cooling water collected by the straight pipe 310 is discharged to the outlet side of the housing 100.

Here, the pair of the vertically-movable screens 320 may be installed at both ends of the vertical tube 310, as shown in FIG. 6, in a V-shape narrowing in the cooling water flow direction of the housing 100.

Accordingly, the cooling water collected in the vertical tube 310 is guided to the vertical tube screen 320 without moving to the end of the vertical tube 310 as the vertical tube 320 is installed at both ends of the vertical tube 310 in an inclined state 320 and may be discharged to the outlet side of the housing 100.

The recovery pipe 330 extends to the outside of the housing 100 while communicating with the center of the vertical pipe 310 and is connected to the ball collector 10 to remove the sponge balls collected in the vertical pipe 310 from the ball collector 10).

The hydrofoil 400 is a component that smoothly flows into the funnel 300 by generating a vortex in the cooling water and the sponge balls that are guided centrally by the V screen 200 that gradually narrows in the communication direction of the cooling water.

The hydrofoil 400 is installed at the center of the V screen 200 in a state of being separated from the V screen 200 and the funnel 300 and is disposed at the center of the V screen 200, Thereby generating a vortex in the cooling water.

The sponge balls moving to the funnel 300 smoothly flow into the funnel 300 without being accumulated in the center of the V screen 200. [

Here, the hydrofoil 400 may be formed in a cylindrical shape as shown in FIG. 7, or alternatively may be formed of a polygonal column

The operation and operation of the present invention including the above-described components will be described.

The ball collector 10 supplies sponge balls to the inlet-side tube of the condenser to remove foreign substances on the inner circumferential surface of the tube.

Here, the ball collector 10 can constantly supply and circulate the sponge balls, and the sponge balls can be intermittently supplied and circulated while operating at predetermined time intervals.

The sponge balls flow into the tube of the condenser together with the cooling water to remove foreign matter adhered to the inner surface of the tube and are discharged to the outlet of the condenser and flow into the housing 100 of the ball collector 20.

The V screen 200 filters the sponge balls while guiding the cooling water flowing into the housing 100 to the outlet side, and guides the cooling water to the funnel 300.

At this time, the sponge balls guided to the funnel 300 are collected by the vertical pipe 310 of the funnel 300 smoothly without being accumulated by the vortex generated by the hydrofoil 400.

Then, the sponge balls are discharged to the return pipe 330 connected to the vertical pipe 310, and are returned to the ball collector 10 and recirculated.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be apparent to those skilled in the art that various changes, substitutions, and alterations can be made therein without departing from the spirit of the invention.

10: Ball collector
20: Ball pick-up machine
100: Housing
200: V screen
210: Screen plate
220: Screen Guide
300: Funnel
310: Vertical tube
320: Vertical screen
330: Recovery pipe
400: hydrofoil
500: screen plate flow unit
510:
520: pressing rod
530:

Claims

A cleaning system for a condenser, which prevents foreign matters from being fixed or corroded in a tube of a condenser constituting a power generation facility in a power plant,
A ball collector for injecting a sponge ball at an inlet side of the condenser tube to circulate the sponge ball together with the cooling water to the condenser tube to remove foreign matter adhering to the inner surface of the condenser tube; And
And a ball collector disposed at an outlet side of the condenser tube for filtering the sponge balls contained in the cooling water while communicating the cooling water to collect the collected sponge balls into the ball collector,
The ball-
A tubular housing installed in the condenser tube and serving as a flow path for cooling water;
And a pair of screen plates which are narrowed in a V-shape in the direction of flow of the cooling water. The V-screen is installed inside the housing and filters the sponge balls while communicating the cooling water to the housing to guide the filtered sponge balls to the center. ;
A funnel installed at the center of the V screen to form a collecting space for the sponge balls and connected to the ball collectors to supply the sponge balls to the ball collectors; And
And a hydrofoil installed adjacent to the center of the funnel and the V screen to form a pillar shape and generating a vortex while intercepting the cooling water moving to the funnel and the sponge ball. .

The method according to claim 1,
The funnel comprises:
A vertical tube communicating with a center of the V screen and constituting a vertical channel through which the sponge ball is collected;
A pair of vertical screen screens for shielding the upper and lower ends of the vertical tube in a communicable manner and discharging the cooling water of the vertical tube to the housing; And
And a recovery pipe connected to the ball collector in a state of being communicated to a lateral side of the vertical tube to recover the sponge ball from the vertical tube to the ball collector.

The method of claim 2,
The pair of vertical screen screens may include a pair of
Wherein the V-shaped portion is formed in a V-shape in a slanting state at both ends of the vertical tube and narrowed in a cooling water flow direction of the housing.

The method according to claim 1,
The V-
And a screen guide installed on each of the back surfaces of the pair of screen plates to guide the cooling water having passed through the screen plate in a linear shape while being extended in parallel with the communication direction of the housing. Cleaning system.

The method according to claim 1,
The ball-
Wherein the pair of screen plates constituting the V screen are respectively installed in the housing in a rotatable state and the pair of screen plates are rotated and flowed to prevent the sponge balls from being fixed to the screen plate Further comprising: a plate flow unit (40) for rotating the condenser.

The method of claim 5,
The screen plate flow unit includes:
A pair of rotation shafts rotatably mounted on the housing and connected to the back surfaces of the pair of screen plates to rotate the screen plates, respectively;
A pair of pressing rods connected to the pair of rotating shafts while being installed on the outside of the housing and pressing and rotating the rotating shafts through linear motion; And
And a presser for linearly moving the pressing rod.

The method according to claim 1,
The ball-
The V-screen, the cooling water guided to the center of the screen plates while generating a vortex in the sponge ball while being guided in a state in which the flow path of the housing is narrowed, Further comprising a vortex vane.