CN1098736C

CN1098736C - Cleaning system for cleaning fluid-conveying pipeline

Info

Publication number: CN1098736C
Application number: CN96107005A
Authority: CN
Inventors: 钱姆·本多赛
Original assignee: Ball Technology Energy Ltd
Current assignee: Ball Technology Energy Ltd
Priority date: 1996-06-25
Filing date: 1996-06-25
Publication date: 2003-01-15
Anticipated expiration: 2016-06-25
Also published as: CN1169341A

Abstract

The present invention relates to a cleaning system. The present invention utilizes pellets which circulate with fluid which flows through a pipeline to clean the pipeline. The system comprises a shell body of a pellet collector, wherein the shell body is provided with a partition plate provided with a plurality of holes. The fluid can pass through the partition plate, and however, the pellets can not pass through the partition plate. Therefore, the pellets are gathered in an upper cavity, and all kinds of valves are controlled, which leads the pellets to circulate into the pipeline again. The upper cavity is covered by a cover cap which can be taken away. Therefore, pellets can be added into the upper cavity, or the pellets can be taken out of the upper cavity.

Description

The purging system of washing fluid conveyance conduit

Technical field

The present invention relates to be used for the purging system of washing fluid conveyance conduit.The present invention is particularly useful in the condenser, is used for cleaning the pipeline of the heat exchanger that uses in condenser, therefore, should be used for describing the present invention below in conjunction with this.

Background technology

The present invention is especially at United States Patent (USP) 4,865, and 121 and 5,176, the purging system of the sort of type described in 204.Such purging system comprises the bead that circulates from the upstream side to the downstream by pipeline together with fluid, isolates the separator of bead and make bead recirculation get back to the EGR of pipeline upstream side from fluid in the pipe downstream side.At United States Patent (USP) 5,176, in 204, separator is a hollow antipriming pipe that is trapped among in the housing in form, and this housing is linked to each other with the downstream of pipeline by a passage.In one embodiment, the hollow antipriming pipe is entrained by an injector, and this injector can will accumulate in the upstream side that bead on the antipriming pipe outer surface sprays into pipeline in when work; And in another embodiment, separator also comprises two valves, is positioned at the entrance side and the outlet side of collector shell, is opened by actuator and bead is sprayed into the upstream side of pipeline.

Such system generally needs an independent reservoir, is used for system is added bead or takes bead away from system, with the purpose that realizes replacing, also is used for the state of bead in the observation system in addition.This reservoir comprises and is used for its connecting system or from the valve that system disconnects has selectively been increased the totle drilling cost of system greatly.

Summary of the invention

The purpose of this invention is to provide a kind of purging system that is used for the washing fluid conveyance conduit, have the advantage of above-mentioned aspect.

According to the present invention, a kind of purging system that is used for pipe blow-through is provided, this pipeline is used for carrying fluid.This purging system comprises: and fluid swims the bead of side to the circulation of its downstream from it by pipeline together, is used for bead at pipe downstream side place from the isolated separator of fluid, is used for bead recirculation is got back to the EGR of pipeline upstream side.This EGR comprises: a bead collector shell, have a porous barrier in it, and allow fluid but do not allow bead, and enclosure interior is divided into upper chamber and lower chambers from process wherein; One first passage is connected to a side of upper chamber in the downstream of pipeline; One second channel is connected to one first position on upper chamber's opposition side at one first position of pipeline upstream side; One third channel is connected to one second position of pipeline upstream side with one second position on the opposition side of last chamber, and receiving a pressure, this pressure is a little less than the pressure at pipeline upstream side first position, but is higher than the pressure at pipe downstream side place; One four-way, it is connected to the pressure source of a lower pressure with lower chambers, and this pressure is lower than the pressure at first and second positions of pipe downstream side place and pipeline upstream side; First, second, third and the four-way road in the valve that flows of control fluid; And a cover cap, it is hiding upper chamber, and can unload from it so that bead added upper chamber or from wherein taking out bead.

As following will more specifically the description, the reservoir that this purging system need not be provided with in order to take out bead with the bead import system or from system is because this system makes the collector shell in the EGR also can play this effect.This feature thereby reduced the totle drilling cost of system greatly.

Description of drawings

Fig. 1 has shown the purging system of a kind of form that constitutes according to the present invention;

Fig. 2 and Fig. 3 have shown the system shown in Figure 1 under the different operating state.

The specific embodiment

Illustrated purging system comprises a condenser 2, condenser comprises that one is the pipeline 4 of a plurality of parallel pipes that separate in form, cooling fluid such as water flows through this pipeline so that the fluid condensation such as steam or refrigerant gas, and this fluid 6 is circulated to outlet 8 by the space between the condenser tubes 4 from entering the mouth.This cooling fluid is circulated to one by condenser tubes 4 from an inlet collecting 10 that is connected to the condenser tubes upstream side by inlet tube 11 and is connected to the outlet header 12 of pipe downstream side by outlet 13.

Cooling fluid comprises and is manyly flow through the cleaning bead 14 of pipeline 4 together by the cooling fluid of forcing to make peace, and is used for preventing that the particles in the condenser tubes 4 from gathering or depositing, and thisly gathers or deposit easy obstruction or corrosion pipeline.Bead 14 usefulness diameters are a bit larger tham the spongy material of the diameter of condenser tubes 4 to be made, their inwalls of pipeline that can rub like this, thus it is kept clean.The technology of the pipeline of this heat exchanger that cleans condenser and other form with the cleaning bead is that everybody knows, and therefore this purging system or the details that is used for the bead 14 of this type systematic are no longer described at this.

One is arranged between the outlet 13 inner outlet headers 12 for the little bulb spacer of catching ball device 20 in form.Catch ball device 20 and comprise the housing 21 with a grid 22, grid 22 is separated into second Room 24 that first Room 23 and that is connected with outlet header 12 is connected with outlet 13 with enclosure interior.Catch the flow export 25 that ball device housing 21 is connected with a shunt valve 26 in addition, this shunt valve 26 is led at the upstream side place of condenser tubes 4 and is got back to inlet tube 11.

Be provided with perforate in the grid 22, be used for separating the bead 14 that flows with cooling fluid and only allow fluid pass through to flow out outlet 13.Bead 14 like this with regard to pinching in the chamber 23 of catching the ball device.As described below, the bead utilization comprises the upstream side of the EGR recirculation ball of a shunt valve 26 to condenser tubes 4.

EGR also comprises a housing 30, and this housing 30 has a porous barrier 31 enclosure interior is divided into first chamber 32 and second chamber 33 that is positioned at the dividing plate opposite side.Dividing plate 31 can be a net with holes.It allows fluid but is not that bead passes through it, and bead just accumulates in the chamber 32 like this.

Shunt valve 26 is by a first passage PW ₁Constitute, and the upper chamber 32 of housing 30 is connected to the downstream of condenser tubes 4 by catching ball device 20.One second channel PW ₂One upper part of the opposite side of upper chamber 32 is connected to a position 34 of the upstream tube 11 of condenser tubes 4 upstream ends; One third channel PW ₃Also the position once with upper chamber 32 is connected on the upstream tube 11, but it is connected and is positioned at passage PW ₂35 places, one position of the downstream part slightly of connecting portion.And 35 places protrude into the passage PW of inlet tube 11 at the position ₃The end cut sth. askew be lower than passage PW so that produce within it ₂The pressure of internal pressure.

Collector chamber housing 30 also comprises a passage PW ₄, it is connected to atmosphere with the following chamber 33 of housing, or is connected to the part of system, and the pressure of this part is lower than passage PW ₁, PW ₂Or PW ₃In pressure in any one.

Passage PW ₁Comprise a stop valve SV ₁, it can manually be controlled or control automatically, to cut off by flowing wherein.Passage PW ₁Also comprise a check-valves CV ₁, it allows fluid from passage PW ₁Flow in the chamber 32 of collector shell 30, but do not allow reverse flow.

Passage PW ₂Also comprise a stop valve SV ₂, it can manually be controlled or control automatically, flows with the fluid that cuts off through this passage.Passage PW ₃Comprise a shutoff valve C V ₃, its allows fluid to flow into inlet tubes 11 and can not reverse flow from collector shell 30.Passage PW ₄Comprise a stop valve SV ₄, it also can manually be controlled or control automatically, and is mobile to cut off by fluid wherein.

Illustrated system comprises that also one is positioned at the stop valve SV of inlet tube 11 ₆With a stop valve SV who is positioned at outlet 13 ₇

As below will being described in more detail, be used for collecting the collector shell 30 that recycles the bead of getting back to condenser tubes 14 entrance sides and also be used as a reservoir, add bead there or take out bead therefrom with dealing.For this reason, housing 30 comprises a cover cap 36, is covered with upper chamber 32 and also can takes away from it, so that add or the taking-up bead.Whether cover cap 36 is transparent, so that can see the thing in the chamber 32 easily, is not only the quantity of bead in it, but also comprises their situation, should change with decision.

The work of system will be described particularly in conjunction with Fig. 2 and Fig. 3 now among Fig. 1.

In the operate as normal of system, valve SV ₆And SV ₇Open valve SV ₁Close, bead 14 just can not be collected in the chamber 23 of catching ball device 20 by condenser tubes 4 circulations like this.Here it is state shown in Figure 1 wherein can be seen, not only valve SV ₁Close, and valve SV ₂And SV ₄Also close.

When hope makes the bead recirculation that is collected in the chamber 23 of catching ball device 20 get back to the entrance side of condenser tubes 4, passage PW ₁Interior valve SV ₁With passage PW ₄Interior valve SV ₄All open, and passage PW ₂Interior valve SV ₂Still close.Here it is state shown in Figure 2.Passage PW ₄Interior low-pressure is therefore with chamber 23 flow export 25, the passage PW by catch ball device of bead from catching ball device 20 ₁ Volume expanding reach 27 and the pipe 26 of this passage is drawn in the collector shell 30 and by passage PW ₄Flow out.Net 31 in the collector shell 30 has prevented that bead 14 is through passage PW ₄Flow out, like this, bead just is collected in the upper chamber 32 of collector shell, also is positioned at simultaneously near catching the passage PW of ball device 20 flow exports 25 ₁ Volume expanding reach 27 in.The flow direction of cooling fluid and bead 14 is by passage PW ₁Interior check-valves CV ₁Determine.

Present passage PW ₄Interior valve SV ₄Close passage PW ₂Interior valve SV ₂Open.Here it is the state shown in Fig. 3.Passage PW with 35 places, position in the inlet tube 11 ₃The lower pressure at the place of obliquely amputating compare the passage PW at 34 places, position in inlet tube 11 ₂In have elevated pressures, this elevated pressures has produced through passage PW ₂, collector shell 30 chamber 32 and passage PW ₃Enter flowing of inlet tube 11, this flow direction is by passage PW ₃Interior check-valves SV ₃Determine.Therefore, accumulate in the bead 14 in the upper chamber 32 of collector shell 30 and accumulate in passage PW ₁Pipe 26 and the bead in the volume expanding reach 27 now and fluid be pumped into inlet tube 11 together, to recycle by condenser tubes 4.

After bead 14 imports inlet tube 11 like this, passage PW ₁Interior valve SV ₁And passage PW ₂Interior valve SV ₂Close, thereby make system get back to original state shown in Figure 1.

The state of the bead 14 in the chamber 32 of housing 30 can be observed continuously by transparent cover 36.No matter when need, can remove cover cap so that bead 14 added in the chamber 32 maybe the bead of wearing and tearing is taken away from chamber, with new bead replacement.

Found passage PW ₁The interior volume that is provided with amplifies section 27 at passage PW ₄Interior valve SV ₄Open period provides other volume for the collection of bead, has therefore reduced through passage PW ₄Such as being used to collect the amount of fluid that preparation imports the bead of inlet tube 11 again.Passage PW ₄Can be connected to an atmosphere or an intrasystem low pressure position, such as upstream (negative pressure) end that is used for making the circulating pump (not shown) that fluid circulates in system.

Claims

1. purging system, be used for cleaning the pipeline of carrying fluid, this system comprise with fluid together by pipeline swim from it side be circulated to its downstream bead, be used at pipe downstream side place bead from the isolated separator of fluid and be used for bead recirculation is got back to the EGR of pipeline upstream side; It is characterized in that described EGR comprises:

One bead collector shell has a porous barrier to allow fluid but do not allow the bead process, and enclosure interior is divided into a upper chamber and a lower chambers in it;

One first passage is connected to a side of described upper chamber in the downstream of described pipeline;

One second channel is connected to one first position on the described upper chamber opposition side at one first position of described pipeline upstream side;

One third channel, one second position on the described opposition side of described upper chamber is connected to one second position of described pipeline upstream side, accepting a pressure, this pressure is a little less than the pressure at described first position of described pipeline upstream side, but is higher than the pressure at described pipe downstream side place;

One four-way is connected to the pressure source of a lower pressure with described lower chambers, and this pressure is lower than the pressure at the place, described downstream of described pipeline, also is lower than the pressure at first position and second position of described pipeline upstream side;

Be positioned at described first, second, third and the valve of four-way, the fluid that is used for controlling from wherein passing through flows;

And a cover cap, it is covered with described upper chamber and can takes away allowing from it and bead is added into described upper chamber or bead is taken away from upper chamber.

2. the system as claimed in claim 1 is characterized in that, described cover cap is transparent, to allow to observe the thing in the described upper chamber.

3. the system as claimed in claim 1, it is characterized in that, described separator comprises catches the ball device, this catches the ball utensil a grid that is connected to the housing of pipe downstream side, this grid is positioned at the described ball device housing of catching, and to constitute a bead gatherer chamber, this chamber is communicated with the downstream of pipeline, collecting with fluid by its bead that flows out, the described ball device housing of catching comprises a flow export from described bead gatherer chamber to described first passage.

4. system as claimed in claim 3 is characterized in that, described grid is installed in one and crosses on the inclined plane of catching ball device housing and form an acute angle with housing near the described flow export of described first passage.

5. system as claimed in claim 4 is characterized in that, described first passage is formed with a volume expanding reach near described described flow export of catching reason device housing, be used for bead is collected in wherein.

6. the system as claimed in claim 1, it is characterized in that, described valve comprises that a stop valve and that is positioned at described first passage is positioned at the check-valves of described first passage, and this check-valves only allows or not to flow out in the downstream of pipeline from described upper chamber from the described upper chamber of pipe downstream side inflow housing.

7. the system as claimed in claim 1 is characterized in that, described valve comprises that one is positioned at the check-valves of described third channel, and it only allows to enter from the outflow of described upper chamber the upstream side of pipeline, and does not allow to flow into described upper chamber from the upstream side of pipeline.

8. the system as claimed in claim 1 is characterized in that, described valve comprises that one is positioned at the stop valve of described second channel.

9. the system as claimed in claim 1 is characterized in that, described valve comprises that one is positioned at the stop valve of described four-way.

10. the system as claimed in claim 1 is characterized in that, described four-way is connected to atmospheric pressure.