CN1969166B - Automatic cleaning system for heat exchangers using ejectors - Google Patents
Automatic cleaning system for heat exchangers using ejectors Download PDFInfo
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- CN1969166B CN1969166B CN2005800193130A CN200580019313A CN1969166B CN 1969166 B CN1969166 B CN 1969166B CN 2005800193130 A CN2005800193130 A CN 2005800193130A CN 200580019313 A CN200580019313 A CN 200580019313A CN 1969166 B CN1969166 B CN 1969166B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G1/00—Non-rotary, e.g. reciprocated, appliances
- F28G1/12—Fluid-propelled scrapers, bullets, or like solid bodies
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Abstract
本发明涉及一种使用清洁球来清洁热交换器(120)传热管的自动清洁系统。所述自动清洁系统包括热交换器(120)、连接到热交换器出口管(124)的球分离器(130)、球供应管(137)和球回收管(138)。系统还包括连通球供应管和球回收管的清洁球贮存罐(140)，以及连通清洁球贮存罐(140)的喷射器(150)。系统还包括具有流体入口引导管(161)和流体出口引导管(163)的旁路管(160)、装在流体入口引导管上的循环泵(162)以及装在流体出口引导管(163)上的电机操作阀(164)。
The present invention relates to an automatic cleaning system using cleaning balls to clean heat transfer tubes of a heat exchanger (120). The automatic cleaning system includes a heat exchanger (120), a ball separator (130) connected to the heat exchanger outlet pipe (124), a ball supply pipe (137) and a ball recovery pipe (138). The system also includes a cleaning ball storage tank (140) connected to the ball supply pipe and the ball recovery pipe, and an injector (150) connected to the cleaning ball storage tank (140). The system also includes a bypass tube (160) with a fluid inlet guide tube (161) and a fluid outlet guide tube (163), a circulation pump (162) mounted on the fluid inlet guide tube (162) and a fluid outlet guide tube (163) The motor on the valve (164) operates the valve.
Description
Technical field
Relate generally to auto cleaning system of the present invention, this system utilizes the combination of pump and injector that cleaning ball is fed to heat exchanger, thereby removes the pollutant attached to inner surface of heat transfering tube of heat exchanger; Relate more specifically to automatic heat exchanger cleaning systems (below as the auto cleaning system of abbreviating), this system uses unidirectional circulating pump to the cleaning ball hold-up tank accommodating fluid that cleaning ball wherein is housed, thereby the fluid by supply is fed to cleaning ball in the heat-transfer pipe of heat exchanger, cleaning ball is along with fluid passes through heat-transfer pipe together, thus the dirt of removing heat-transfer pipe; And the structure of this system is, when needs reclaim cleaning ball, open the motor operation valve that is contained in injector tip, fluid is fed to injector from circulating pump, and injector uses the nozzle in the injector to discharge fluid, thereby reduces the pressure in the cleaning ball hold-up tank, cleaning ball is recovered in the cleaning ball hold-up tank thus, supply and recovery required time of cleaning ball can be regulated arbitrarily according to the condition of system installation site, thereby carry out the supply and the recovery of cleaning ball easily; And solved the temporary transient problem of blocking of the cleaning ball that is fed to bulb spacer in the conventional art, thereby the pressure loss of preventing and the cleaning ball that causes owing to the temporary transient choking phenomenon of cleaning ball wear and tear, and with must and change the direction of rotation of circulating pump in normal direction in the other direction periodically so that the installation cost that obviously reduces the fault occurrence probability and reduce circulating pump is compared in supply with the conventional art that reclaims cleaning ball.
Background technology
Usually, the shell and the tube type heat exchanger of many pipes of device have been used for refrigeration system or chemical plant in the shell.In this heat exchanger, heat transmits between air and the fluid as heat transfer medium in cooling tower.If this heat exchanger uses a segment length time, foreign substance then, for example airborne microorganism and dust will mix with fluid and concentrate on the pipe internal surface of heat exchanger, thereby cause impurity, and for example incrustation scale and mud are on pipe internal surface.For this reason, the performance degradation of heat exchanger, its lost of life.Therefore, need to remove the impurity that adheres to.
Concentrate on the incrustation scale on the heat exchanger pipe internal surface or the method for mud as removing, United States Patent (USP) 3919372, Japanese kokai publication sho 63-238397, United States Patent (USP) 486521, Korean laid-open 1996-7006061, Korean Utility Model 227922 and Korean Utility Model 237353 have disclosed the heat exchanger tube clean method, wherein force ball such as sponge ball (below abbreviate cleaning ball as) through pipe, thereby remove the impurity that pipe internal surface adheres to.
In these patents, below the technology that discloses among the Korean laid-open 1996-7006061 will be described.This technology relates to a kind of cleaning fluid carrier pipe (below be called heat-transfer pipe) inner cleaning systems and relevant device thereof of being used for.As shown in Figure 1, when the compressed air supply valve 54 that is connected to compressor 50 was opened, air was fed to cleaning ball hold-up tank 40 from compressor 50.Then, the pressure of supply air makes cleaning ball in cleaning ball hold-up tank 40 42 and fluid rising.Subsequently, cleaning ball 42 and fluid are fed to the heat-transfer pipe 22 of heat exchanger 20 through conduit 35, thereby clean heat-transfer pipe 22, wherein conduit 35 is connected to cleaning ball hold-up tank 40 inlet tube 10 of heat exchanger 20.In order after carrying out cleaning course, to reclaim cleaning ball 42, to open compressed air drain valve 56 air in the cleaning ball hold-up tank 40 is discharged into the outside, this drain valve is contained on the air outlet duct 53 that is in cleaning ball hold-up tank 40 precalculated positions.Then, the bulb spacer 30 by being connected to heat exchanger 20 outlets 24 and be connected to pressure reduction between the cleaning ball hold-up tank 40 of bulb spacer 30 through tube connector 34 is recovered to cleaning ball 42 in the cleaning ball hold-up tank 40.In the accompanying drawings, reference number 32 expression cylinder sieves, 37 expression valves.
But in using compressed-air actuated traditional cleaning systems, if compressed air supply valve 54 is opened for a long time, air does not suck the inlet tube 10 of heat exchanger 20 with needing.On the contrary, if the time of opening of compressed air supply valve 54 is short, then cleaning ball 42 may not can all be fed in the heat-transfer pipe 22 of heat exchanger 20.Particularly, when reducing the pressure of cleaning ball hold-up tank 40 in order to reclaim cleaning ball 42, a large amount of fluids that must be in the cleaning ball hold-up tank 40 are discharged through delivery pipe as waste water.
In addition, so that supply or when reclaiming cleaning ball 42,, in check-valves 36, generate noise when opening or closing compressed air supply valve 54 and compressed air drain valve 56 because air pressure increases suddenly or the water hammer that produces when reducing.Under serious situation, the problem of check-valves 36 appears damaging.
In addition, when after carrying out cleaning course, reclaiming cleaning ball 42, can not carry out the removal process of cleaning ball 42 for a long time owing to the finite volume of cleaning ball hold-up tank 40.Therefore, cleaning ball 42 can not all be recovered in the cleaning ball hold-up tank 40.Particularly, owing to be discharged into the quantity of cleaning ball 42 quantity of bulb spacer 30 from heat exchanger outlet pipe 24 greater than the cleaning ball 42 that reclaims, in other words, because the diameter of tube connector 34 that is connected to bulb spacer 30 ends at core the transient phenomenon that cleaning ball 42 blocks bulb spacers 30 will occur less than the diameter of bulb spacer 30.Because the choking phenomenon of cleaning ball 42 pressure loss occurs in bulb spacer 30.As a result, the flow resistance that is connected to the tube connector of bulb spacer 30 ends at core increases, thus the wearing and tearing that increase cleaning ball 42.
And, as cleaning ball 42 is fed to the heat-transfer pipe 22 of heat exchanger 20 and the drive unit that cleaning ball 42 is recovered to cleaning ball hold-up tank 40 from cleaning ball hold-up tank 40, need separator air supply pipe 52 and compressor 50 to increase the pressure of cleaning ball hold-up tank 40, and need decompressor to reduce the pressure of cleaning ball hold-up tank 40.Like this, owing to need extra equipment, so cleaning systems are difficult to commercialization.In addition, the problem that exists system cost to increase.In addition, the problem of legacy system is, because cleaning ball hold-up tank 40 finite volumes cause cleaning ball 42 supplies and recovery rate to reduce, so remove the decrease in efficiency attached to the incrustation scale of heat-transfer pipe 22 inner surfaces.
In the effort that overcomes the problems referred to above, Korean Utility Model 227922 has disclosed a kind of system that is used for cleaning the heat-transfer pipe 22 of condenser.As shown in Figure 2, in these cleaning systems,, fluid is fed to cleaning ball hold-up tank 40 from the inlet tube 10 of heat exchanger 20 through fluid supply tubes 11, cleaning ball 42 is risen in cleaning ball hold-up tank 40 by the normal rotation of circulating pump 45.After this,, cleaning ball 42 is fed in the heat-transfer pipe 22 of heat exchanger 20 through the upper end of connection cleaning ball hold-up tank 40 and the ball carrier pipe 13 of heat exchanger 20 inlet tubes 10, thus cleaning heat-transfer pipe 22.When after carrying out cleaning course, reclaiming cleaning ball 42, circulating pump 45 reverse rotations.Thus cleaning ball 42 and fluid are discharged into bulb spacer 30 from the outlet 24 of heat exchanger 20.The suction force that cleaning ball 42 and fluid are recycled pump 45 is recovered to cleaning ball hold-up tank 40 through ball recovery tube 34, and ball recovery tube 34 connects cleaning ball hold-up tank 40 and places the cylinder sieve 32 of bulb spacer 30.Subsequently, the fluid that reclaims with cleaning ball 42 from placing filter 43 processes between cleaning ball hold-up tank 40 and the circulating pump 45, thereby leaches incrustation scale.Then, fluid is fed to once more the inlet tube 10 of heat exchanger 20 by fluid supply tube 11.In the accompanying drawings, reference number 14 and 35 expression valves.
Like this, in traditional cleaning systems,, use reversible circulating pump 45 as cleaning ball 42 is fed to the heat-transfer pipe 22 of heat exchanger 20 and cleaning ball 42 is recovered to the drive unit of cleaning ball hold-up tank 40 from cleaning ball hold-up tank 40.But,, therefore increased system cost because Reversible Cycle pump 45 is much more expensive than one-way pump.In addition, in reclaiming the process of cleaning ball 42, the cleaning ball 42 that has passed the heat-transfer pipe 22 of heat exchanger 20 concentrates on the cylinder sieve 32 of bulb spacer 30, and the suction force of the circulating pump 45 by reverse rotation is recovered in the cleaning ball hold-up tank 40 again.Therefore, fluid flow resistance increases.In addition, because the friction between the cleaning ball 42 produces wearing and tearing, the result shortens the life-span of cleaning ball 42.
Summary of the invention
Therefore, on the basis of the problems referred to above that in considering prior art, occur the present invention is proposed, and an object of the present invention is to provide a kind of automatic heat exchanger cleaning systems, wherein when being contained in motor operation valve from the pipe that injector outlet is stretched out when closing, fluid is fed in the cleaning ball hold-up tank that cleaning ball wherein is housed by unidirectional circulating pump, thereby utilize the fluid of supply cleaning ball to be fed in the heat-transfer pipe of heat exchanger, and cleaning ball passes through heat-transfer pipe with fluid, thereby remove the incrustation scale of heat-transfer pipe, and the structure of these cleaning systems is, when needs reclaim cleaning ball, open the motor operation valve that is contained in injector tip, fluid is fed to injector from circulating pump, and injector utilizes the nozzle in the injector to discharge fluid, thereby reduce the pressure in the cleaning ball hold-up tank, thus cleaning ball is recovered in the cleaning ball hold-up tank.Therefore supply and recovery required time of cleaning ball can be regulated arbitrarily according to the condition of system installation site, thereby carry out the supply and the recovery of cleaning ball easily; And solved the temporary transient problem of blocking of the cleaning ball that is fed to bulb spacer in the conventional art, thereby the pressure loss of preventing and because the cleaning ball wearing and tearing that the temporary transient choking phenomenon of cleaning ball causes.
Another object of the present invention provides a kind of automatic heat exchanger cleaning systems, these cleaning systems use unidirectional circulating pump as in the heat-transfer pipe that cleaning ball is fed to heat exchanger and from wherein reclaiming the pump of cleaning ball, thereby compare with the conventional art that reclaims cleaning ball with using expensive Reversible Cycle pump supply, obviously reduce the cost of system.
In the first embodiment of the present invention, a kind of automatic heat exchanger cleaning systems comprise: heat exchanger, and described heat exchanger has inlet tube at its first end, has outlet at its second end, and many heat-transfer pipes are contained in the heat exchanger; Bulb spacer, described bulb spacer is connected to the outlet of heat exchanger, and inside has separating plate, and the cleaning ball that this separating plate is used for discharging from outlet separates with fluid; Ball supply pipe and ball recovery tube, the two is connected respectively to the ball outlet of the inlet tube of heat exchanger and bulb spacer, thereby is fed to cleaning ball in the heat exchanger and is recovered in the cleaning ball hold-up tank; The cleaning ball hold-up tank, described cleaning ball hold-up tank ball supply pipe and the ball recovery tube of being communicated with in parallel, collecting net are contained in the cleaning ball hold-up tank to collect cleaning ball; Injector, described injector pass through supply and reclaim control valve to be communicated with cleaning ball hold-up tank lower end, thereby when injector was discharged the fluid of being supplied by circulating pump, the pressure in the cleaning ball hold-up tank descended, thereby cleaning ball is recovered in the cleaning ball hold-up tank; Shunt valve, described shunt valve have fluid intake guiding tube and fluid issuing guiding tube, make fluid flow out, also enter fluid discharge pipe once more through injector from fluid discharge pipe; Circulating pump, described circulating pump are contained on the fluid intake guiding tube and along a direction and supply fluid to injector, thereby realize the supply and the recovery of cleaning ball; And the motor operation valve, described motor operation valve is contained in from injector and exports on the fluid issuing guiding tube that stretches out, thereby passes through the opening supply of motor operation valve or reclaim cleaning ball.
In a second embodiment, a kind of automatic heat exchanger cleaning systems comprise: heat exchanger, and described heat exchanger has inlet tube at its first end, has outlet at its second end, and many heat-transfer pipes are contained in the heat exchanger; Bulb spacer, described bulb spacer is connected to the outlet of heat exchanger, and inside has separating plate, and the cleaning ball that this separating plate is used for discharging from outlet separates with fluid; Ball supply pipe and ball recovery tube, the two is connected respectively to the outlet and the inlet of cleaning ball hold-up tank, and the ball recovery tube connects the ball outlet of bulb spacer, thus cleaning ball is through the over-heat-exchanger circulation or be recovered in the cleaning ball hold-up tank; The cleaning ball hold-up tank, described cleaning ball hold-up tank all is communicated with ball supply pipe and ball recovery tube, and collecting net is contained in the cleaning ball hold-up tank to collect cleaning ball; Supply and recovery control valve, described supply and recovery control valve are connected to the lower end and the ball supply pipe of cleaning ball hold-up tank, thereby when injector is discharged fluid with the recovery cleaning ball, the fluid that is in the cleaning ball hold-up tank are fed to the ball supply pipe; Injector, described injector is connected to the ball supply pipe, and will be by the fluid ejection of circulating pump supply, reduces in the ball supply pipe or supply and reclaim pressure in the control valve, thereby cleaning ball is circulated through over-heat-exchanger, perhaps cleaning ball is recovered in the cleaning ball hold-up tank; Shunt valve, described shunt valve have fluid intake guiding tube and fluid issuing guiding tube, make fluid flow out, also enter inlet tube once more through injector from inlet tube; Circulating pump, described circulating pump are contained on the fluid intake guiding tube and along a direction and supply fluid to injector, thereby realize the supply and the recovery of cleaning ball; And the motor operation valve, described motor operation valve is contained on the ball supply pipe and supply and reclaiming on the control valve, thereby according to the opening supply of motor operation valve or reclaim cleaning ball.
In the 3rd embodiment, a kind of automatic heat exchanger cleaning systems comprise: one or more heat exchangers, and each described heat exchanger has inlet tube at its first end, has outlet at its second end, and many heat-transfer pipes are housed in each heat exchanger; Bulb spacer, described bulb spacer is connected to the outlet of heat exchanger, and inside has separating plate, and the cleaning ball that this separating plate is used for discharging from outlet separates with fluid; Ball supply pipe and ball recovery tube, the two is connected respectively to the outlet and the inlet of cleaning ball hold-up tank, and the ball recovery tube is connected to the ball outlet of bulb spacer, thus cleaning ball is through the over-heat-exchanger circulation or be recovered in the cleaning ball hold-up tank; The cleaning ball hold-up tank, described cleaning ball hold-up tank all is communicated with ball supply pipe and ball recovery tube, and collecting net is contained in the cleaning ball hold-up tank to collect cleaning ball; Supply and reclaim control valve, described supply and reclaim lower end and the ball supply pipe that control valve is connected to the cleaning ball hold-up tank, thus when injector ejecting fluid during, the fluid that is in the cleaning ball hold-up tank is fed to the ball supply pipe with the recovery cleaning ball; One or more injectors, described injector is connected to the ball supply pipe, and will be discharged by the fluid of circulating pump supply, reduces in the ball supply pipe or supply and reclaim pressure in the control valve, thereby cleaning ball is circulated through over-heat-exchanger, perhaps cleaning ball is recovered in the cleaning ball hold-up tank; Polymorphic type shunt valve, described shunt valve have one or more fluid intake guiding tube and fluid issuing guiding tube, make fluid flow out, also enter the inlet tube that connects injector once more through injector from inlet tube; Circulating pump, described circulating pump are contained on the fluid intake guiding tube and along a direction and supply fluid to injector, thereby realize the supply and the recovery of cleaning ball; And motor operation valve, described motor operation valve is contained on ball supply pipe, supply and recovery control valve and the fluid intake guiding tube, injector is connected to circulating pump, thereby according to the opening supply of motor operation valve or reclaim cleaning ball, and optionally supply fluid to injector according to the opening of motor operation valve.
In first embodiment, the cleaning ball hold-up tank can have hollow cylindrical, and comprises: outlet, described outlet are in the precalculated position of described jar of upper end, and connect ball supply pipe and ball recovery tube; And inlet, described inlet is in the described jar of precalculated position that the lower end is relative with outlet, and is communicated with injector through supplying and reclaiming control valve, thereby reduces from inlet through exporting the upwards flow resistance of streaming flow of discharging.
In addition, the automatic heat exchanger cleaning systems of first embodiment can also comprise be contained on the ball supply pipe and the ball recovery tube on check-valves, thereby prevent that the cleaning ball in cleaning ball supply or the removal process from refluxing.
In a second embodiment, the formation of cleaning ball hold-up tank can be to become turbulent flow through the fluid that sucks the cleaning ball hold-up tank that enters the mouth, and discharge through outlet with cleaning ball, thereby supply cleaning ball.
In addition, the cleaning ball hold-up tank of second embodiment can be a hollow cylindrical, and comprises: inlet, described inlet are in the precalculated position of described jar of upper end, and are connected to the ball recovery tube; Outlet, described outlet are in described jar upper end, and its position is relative with inlet, with inlet on the par line, and be connected to the ball supply pipe, thereby become turbulent flow through the fluid that exports discharge from inlet; And the fluid tap, described fluid tap is formed on the center of described jar of lower end, thereby fluid is discharged into supply and reclaims control valve from the cleaning ball hold-up tank, reclaims cleaning ball thus.
In first to the 3rd embodiment, separating plate can be oval, and the rectangle extension is pressed in its lower end, and described separating plate is arranged in the bulb spacer and tilts, and can comprise that longshore current body flow direction passes the groove that separating plate forms.
Automatically the heat exchanger cleaning systems can also comprise the commutation guide body, and described commutation guide body is in the edge of the ball outlet of close bulb spacer on the separating plate, thereby the guiding cleaning ball is discharged to the ball outlet.
In first to the 3rd embodiment, injector can comprise nozzle, is used for being discharged by the fluid of circulating pump supply.
In first to the 3rd embodiment, the cleaning ball hold-up tank can comprise the side glass that is positioned at above it, thereby allows the user to observe flowing and wear rate of cleaning ball.
In first to the 3rd embodiment, inlet tube and ball supply pipe can form manifold configuration, be communicated with one or more injectors with multiple layout, and the outlet formation manifold configuration that is connected to bulb spacer.
The motor operation valve can be contained on the fluid intake guiding tube that is connected to injector and circulating-pump outlet, thereby allows the user according to purposes control fluid intake guiding tube.
In automatic heat exchanger cleaning systems of the present invention, when being contained in motor operation valve from the pipe that injector outlet is stretched out when closing, fluid is fed in the cleaning ball hold-up tank that cleaning ball wherein is housed by unidirectional circulating pump, thereby utilize the fluid of supply cleaning ball to be fed in the heat-transfer pipe of heat exchanger, and cleaning ball passes through heat-transfer pipe with fluid, thereby removes the incrustation scale of heat-transfer pipe.And, structure of the present invention is, when needs reclaim cleaning ball, open the motor operation valve that is contained in injector tip, fluid is fed to injector from circulating pump, and injector utilizes the nozzle in the injector to discharge fluid, thereby reduces the pressure in the cleaning ball hold-up tank, thus cleaning ball is recovered in the cleaning ball hold-up tank.Therefore, supply and recovery required time of cleaning ball can be regulated arbitrarily according to the condition of system installation site, thereby carry out the supply and the recovery of cleaning ball easily.And, the invention solves the temporary transient problem of blocking of the cleaning ball that is fed to bulb spacer in the conventional art, thus the pressure loss of preventing and because the cleaning ball wearing and tearing that the temporary transient choking phenomenon of cleaning ball causes.
In addition, the present invention uses unidirectional circulating pump as in the heat-transfer pipe that cleaning ball is fed to heat exchanger and from wherein reclaiming the pump of cleaning ball, thereby compare with the conventional art that reclaims cleaning ball with using expensive Reversible Cycle pump supply, obviously reduce the cost of system.
In addition, the present invention uses the combination supply of common unidirectional circulating pump and injector and reclaims cleaning ball.Therefore, system simple in structure, thus obviously reduce the fault occurrence probability.Like this, the required space of this system is installed reduces, system's manufacturing cost reduces.
Description of drawings
Fig. 1 is the schematic diagram of expression conventional fluid guiding tube cleaning systems;
Fig. 2 is the schematic diagram of expression conventional fluid carrier pipe cleaning systems;
Fig. 3 is the schematic diagram according to the automatic heat exchanger cleaning systems of first embodiment of the invention;
Fig. 4 represents respectively according to the bulb spacer of auto cleaning system of the present invention and the cutaway view and the details drawing of separating plate;
Fig. 5 is that expression is according to the cross section of the cleaning ball hold-up tank of auto cleaning system of the present invention and the view of expression fluid inflow cleaning ball hold-up tank;
Fig. 6 is the cutaway view of expression according to the injector of auto cleaning system of the present invention;
Fig. 7 is the view according to the automatic heat exchanger cleaning systems of second embodiment of the invention;
Fig. 8 is the cutaway view and the section plan of cleaning ball hold-up tank of the auto cleaning system of presentation graphs 7;
Fig. 9 is the view of expression according to the automatic heat exchanger cleaning systems of third embodiment of the invention; And
Figure 10 is the view of expression operation of auto cleaning system according to the present invention.
The specific embodiment
To explain automatic heat exchanger cleaning systems of the present invention below in detail.
Fig. 3 is the schematic diagram according to the automatic heat exchanger cleaning systems of first embodiment of the invention.Fig. 4 represents the bulb spacer of auto cleaning system of the present invention and the cutaway view and the details drawing of separating plate respectively.Fig. 5 represents according to the mobile view of fluid in the cross section of the cleaning ball hold-up tank of auto cleaning system of the present invention and the expression cleaning ball hold-up tank.
In addition, Fig. 6 is the cutaway view of expression injector of auto cleaning system according to the present invention.
As shown in Figure 3, auto cleaning system of the present invention comprises heat exchanger 120, has inlet tube 110 at its first end, has outlet 124 at its second end.Have many heat-transfer pipes 122 in the heat exchanger 120.Auto cleaning system also comprises bulb spacer 130, and described bulb spacer 130 is connected to the outlet 124 of heat exchanger 120 and wherein has separating plate 132, and the cleaning ball 142 that this separating plate 132 is used for discharging from outlet 124 separates with fluid; And ball supply pipe 137 and ball recovery tube 138, the two is connected respectively to the ball outlet 135 of the inlet tube 110 of heat exchanger 120 and bulb spacer 130, is recovered in the cleaning ball hold-up tank 140 thereby cleaning ball 142 is fed in the heat exchanger 120 and with them.Auto cleaning system also comprises cleaning ball hold-up tank 140, all is communicated with the ball supply pipe 137 and the ball recovery tube 138 that walk abreast, and collecting net 141 is contained in the cleaning ball hold-up tank 140, is used to collect cleaning ball 142.Auto cleaning system also comprises injector 150, be communicated with cleaning ball hold-up tank 140 lower ends by supply and recovery control valve 147, thereby when injector 150 is discharged the fluid of being supplied by circulating pump 162, pressure in the cleaning ball hold-up tank 140 descends, thereby cleaning ball 142 is recovered in the cleaning ball hold-up tank 140.Auto cleaning system also comprises shunt valve 160, and it has fluid intake guiding tube 161 and fluid issuing guiding tube 163, makes fluid flow out, also enter fluid discharge pipe 126 once more through injector 150 from fluid discharge pipe 126.Auto cleaning system also comprises circulating pump 162, and this circulating pump 162 is contained on the fluid intake guiding tube 161, and fluid is fed to injector 150 along a direction, thereby realizes the supply and the recovery of cleaning ball 142.Auto cleaning system also comprises motor operation valve 164, and it is contained in from injector 150 and exports on the fluid issuing guiding tube 163 that stretches out, thereby passes through the opening supply of motor operation valve 164 or reclaim cleaning ball 142.
In addition, commutation guide body 134 is arranged on the separating plate 132 on the edge near the ball outlet 135 of bulb spacer 130.The fluid and the cleaning ball 142 of the scheduled volume that commutation guide body 134 will be discharged from the outlet 124 of heat exchanger 120 are towards ball outlet 135 guiding of the lower end that is in bulb spacer 130.
In addition, on ball supply pipe 137 and ball recovery tube 138, check- valves 137a and 138a are installed, thereby when cleaning ball 142 is fed to heat exchanger 120 or when bulb spacer 130 is recovered to cleaning ball hold-up tank 140, prevents that cleaning ball 142 from refluxing from cleaning ball hold-up tank 140.
Cleaning ball hold-up tank 140 all is communicated with the ball supply pipe 137 and the ball recovery tube 138 that walk abreast.Shown in Fig. 5 (a) and 5 (b), the cleaning ball hold-up tank 140 of hollow cylindrical comprises outlet 145, and this outlet 145 is in a jar precalculated position, upper end, and is connected to ball supply pipe 137 and ball recovery tube 138; And entering the mouth 144, this inlet 144 is in the precalculated position of jar lower end, and is relative with outlet 145, and is communicated with injectors 150 by supplying and reclaiming control valve 147, thereby reduces from the 144 upwards flow resistances of streaming flow through outlet 145 discharges that enter the mouth.Columniform collecting net 141 is arranged in the cleaning ball hold-up tank 140, is used to collect cleaning ball 142.
And, at the upper surface of cleaning ball hold-up tank 140 side glass 143 being housed, side glass 143 is made by glass or transparent plastic, allows the user to observe flowing and state of wear of cleaning ball 142.
First end of shunt valve 160 is connected to the upper and lower end of injector 150, and second end is connected to the fluid discharge pipe 126 that stretches out from bulb spacer 130 outlets.Therefore, shunt valve 160 forms the fluid loop structures, thereby when reclaiming cleaning ball 142, from fluid discharge pipe 126 suction shunt valves 160, the discharge process by injector 150 enters fluid discharge pipe 126 to fluid once more by circulating pump 162.Here, in the shunt valve 160 fluid discharge pipe 126 is connected to the pipe of injector 150 upper ends, is used to utilize circulating pump 162 that fluid is fed to injector 150 from fluid discharge pipe 126.This pipe is called fluid intake guiding tube 161.In the shunt valve 160 fluid discharge pipe 126 is connected to the pipe of injector 150 lower ends, is used for the fluid that injector 150 is discharged is fed to fluid discharge pipe 126 once more.This pipe is called fluid issuing guiding tube 163.
Circulating pump 162 is contained on the fluid intake guiding tube 161, is used for along a direction circulation of fluid, and will in the supply of cleaning ball 142 and removal process fluid be fed to injector 150 from fluid discharge pipe 126.Motor operation valve 164 is contained on the fluid issuing guiding tube 163, and control fluid issuing guiding tube 163, thereby the discharging of the fluid of injector 150 causes cleaning ball hold-up tank 140 internal pressures to descend, thereby reclaims cleaning ball 142.Therefore, opening by motor operation valve 164, cleaning ball 142 is fed in the heat exchanger 120 or from bulb spacer 130 is recovered to the cleaning ball hold-up tank 140, motor operation valve 164 is contained in from injector 150 and exports on the pipe that stretches out, that is, be contained on the fluid issuing guiding tube 163 that connects injector 150 outlets.
At length, when the work by circulating pump 162 supplies fluid to injector 150, if close the motor operation valve 164 that is contained on the fluid issuing guiding tube 163 that stretches out from injector 150 outlet, then the fluid of discharging from injector 150 is through supply with reclaim control valve 147 and cleaning ball hold-up tank 140 flows to the inlet tube 110 of heat exchanger 120.At this moment, the cleaning balls 142 that have been in the cleaning ball hold-up tank 140 move to the inlet tube 110 of heat exchanger 120 with the fluids that upwards flow through cleaning ball hold-up tank 140.Subsequently, cleaning ball 142 and fluid are fed to the heat-transfer pipe 122 of heat exchanger 120 together, and fluid enters heat exchanger 120 through inlet tube 110 under the effect of driving pump 112.Cleaning ball 142 is carried out the cleaning course of removing incrustation scale from heat-transfer pipe 122 inner surfaces.
On the contrary, if the motor operation valve 164 that is contained on the fluid issuing guiding tube 163 that stretches out from injector 150 outlet is opened when circulating pump 162 work, fluid is discharged to fluid discharge pipe 126 through fluid issuing guiding tube 163 from injector 150.That is, when the nozzle by injector 150 under high speed 151 was discharged fluids, the pressure drop by injector 150 produced suction force in injector 150.At this moment, under the effect of the suction force of injector 150, cleaning ball 142 separates with fluid in bulb spacer 130, and is recovered to the cleaning ball hold-up tank 140 from bulb spacer 130.
Fig. 7 represents the automatic heat exchanger cleaning systems according to second embodiment of the invention.Fig. 8 is the cutaway view and the section plan of cleaning ball hold-up tank of the auto cleaning system of presentation graphs 7.The structure of this embodiment is as follows.
The part that second embodiment is identical with the first embodiment auto cleaning system 100 is represented with identical reference number.
In auto cleaning system 100a according to second embodiment, different with the auto cleaning system 100 of first embodiment, the cleaning ball cyclic process is carried out the scheduled time continuously, when wherein the motor operation valve 164 on being contained in ball supply pipe 137 is opened, injector 150 is being discharged fluid at a high speed, make the cleaning ball 142 that is in the cleaning ball hold-up tank 140 be fed to heat exchanger 120, thus heat-transfer pipe 122 inside of cleaning heat exchanger 120.In addition, when the motor operation valve 164 that is contained on the ball supply pipe 137 cuts out, and be contained in supply and reclaim motor operation valve 164a on the control valve 147 when opening, under the pressure drop that produces in cleaning ball hold-up tank 140 because injector 150 is discharged fluid, cleaning ball 142 is recovered to the cleaning ball hold-up tank 140 from bulb spacer 130.The structure of auto cleaning system 100a will be described below.
As shown in Figure 7, comprise heat exchanger 120, have inlet tube 110, have outlet 124, have heat-transfer pipe 122 in the heat exchanger 120 at its second end at its first end according to the auto cleaning system 100a of second embodiment of the invention.Auto cleaning system 100a also comprises bulb spacer 130, and described bulb spacer 130 is connected on the outlet 124 of heat exchanger 120 and wherein has separating plate 132, and this separating plate 132 is used for and will separates with fluid from the cleaning ball 142 that outlet 124 is discharged.Auto cleaning system 100a also comprises ball supply pipe 137 and ball recovery tube 138, and the two is connected respectively to the outlet 145 and the inlet 144 of cleaning ball hold-up tank 140.Ball recovery tube 138 is connected to the ball outlet of bulb spacer 130, makes cleaning ball by heat exchanger 120 circulations or be recovered in the cleaning ball hold-up tank 140.Auto cleaning system 100a also comprises cleaning ball hold-up tank 140, all is communicated with ball supply pipe 137 and ball recovery tube 138, and collecting net 141 is contained in the cleaning ball hold-up tank 140, is used to collect cleaning ball 142.Auto cleaning system 100a also comprises supply and reclaims control valve 147, be connected to the lower end and the ball supply pipe 137 of cleaning ball hold-up tank 140, thereby when injector 150 is discharged fluid recovery cleaning balls 142, make the fluid in the cleaning ball hold-up tank 140 Already in be fed to ball supply pipe 137.Auto cleaning system 100a also comprises injector 150, this injector 150 is connected to ball supply pipe 137 and sprays the fluid of being supplied by circulating pump 162, reduce in the ball supply pipe 137 or supply and reclaim pressure in the control valve 147, thereby, perhaps cleaning ball 142 is recovered in the cleaning ball hold-up tank 140 through over-heat-exchanger 120 circulation cleaning balls 142.Auto cleaning system 100a also comprises shunt valve 160, and it has fluid intake guiding tube 161 and fluid issuing guiding tube 163, fluid is flowed out from fluid discharge pipe 126 by injector 150 also enter inlet tube 110 once more; And circulating pump 162, circulating pump 162 is contained on the fluid intake guiding tube 161, and supplies fluid to injector 150 fluid is circulated along a direction, thereby realizes the supply and the recovery of cleaning ball 142.Auto cleaning system 100a also comprises motor operation valve 164 and the 164a that is contained on ball supply pipe 137 and supply and the recovery control valve 147, thereby passes through the opening supply of motor operation valve 164 and 164a or reclaim cleaning ball 142.
Here, have the structure identical, therefore unnecessary further explanation heat exchanger 120, bulb spacer 130 and injector 150 according to heat exchanger 120, bulb spacer 130 and the injector 150 of second embodiment with the heat exchanger 120 of first embodiment, bulb spacer 130 and injector 150.And only explain the specific characteristic of second embodiment.
In a second embodiment, ball supply pipe 137 and ball recovery tube 138 are connected respectively to the outlet 145 and the inlet 144 of cleaning ball hold-up tank 140, be connected respectively to the ball outlet 135 of inlet tube 110 and bulb spacer 130 simultaneously, thereby cleaning ball 142 circulates through over-heat-exchanger 120 continuously from cleaning ball hold-up tank 140, and is recovered to the cleaning ball hold-up tank 140 from bulb spacer 130.Simultaneously, supply and recovery control valve 147 are parallel-connected to cleaning ball hold-up tank 140 lower ends and ball supply pipe 137, are used to reclaim cleaning ball 142.That is, when motor operation valve 164a opened, injector 150 was discharged injector 150 suction forces that fluids produce, with the fluid in the cleaning ball hold-up tank 140 Already in through supply with reclaim control valve 147 and suck ball supply pipes 137.Then, the pressure in the cleaning ball hold-up tank 140 descends, thereby cleaning ball 142 is recovered to the cleaning ball hold-up tank 140 from bulb spacer 130.
In addition, motor operation valve 164 and 164a are contained in ball supply pipe 137 and supply respectively and reclaim on the control valve 147, be used for optionally opening or closing ball supply pipe 137 and supply and reclaim control valve 147, thereby make injector 150 suction forces of discharging the fluid generation at a high speed optionally act on these pipes, promptly act on ball supply pipe 137 and supply and reclaim control valve 147, thereby circulate continuously or recovery cleaning ball 142.
And check-valves 137a is contained on the ball supply pipe 137 between motor operation valve 164 and the injector 150, thus cleaning ball 142 from cleaning ball hold-up tank 140 through the cyclic process of over-heat-exchanger 120, prevent that cleaning ball 142 from refluxing.
140 series connection of cleaning ball hold-up tank are communicated with ball supply pipe 137 and ball recovery tube 138.When cleaning ball 142 circulated continuously, fluid sucked in the cleaning ball hold-up tanks 140 by inlet 144, forms turbulent flow in cleaning ball hold-up tank 140, and discharged by exporting 145.As shown in Figure 8, cleaning ball hold-up tank 140 has hollow cylindrical.In order to make fluid from entering the mouth 144 to outlet 145 formation turbulent flows, the inlet 144 that connects ball recovery tube 138 is in the precalculated position of cleaning ball hold-up tank 140 upper ends, the outlet 145 that connects ball supply pipe 137 is in jar upper end and the 144 opposite positions that enter the mouth, but is in the par line with inlet 144.Core in the jar lower end is formed with fluid tap 146, thereby fluid is discharged to supply and reclaims control valve 147 from cleaning ball hold-up tank 140, reclaims cleaning ball 142 thus.
And, in cleaning ball hold-up tank 140, be provided with columniform collecting net 141, be used to collect cleaning ball 142.In addition, the side glass 143 that glass or transparent plastic are made is housed, allows the user to observe flowing and state of wear of cleaning ball 142 at cleaning ball hold-up tank 140 upper surfaces.
First end of shunt valve 160 is connected to the upper and lower end of injector 150, and its second end is connected to the inlet tube 110 that stretches out from heat exchanger 120 inlets.Therefore, shunt valve 160 forms the fluid loop structure, thereby when cleaning ball 142 circulates continuously or reclaims, by the fluid of circulating pump 162 from inlet tube 110 suction shunt valves 160, enters inlet tube 110 once more through injector 150.Here, in the shunt valve 160 inlet tube 110 is connected to the pipe of injector 150 lower ends, is used to utilize circulating pump 162 that fluid is fed to injector 150 from inlet tube 110.This pipe is called fluid intake guiding tube 161.In the shunt valve 160 injector 150 upper ends are connected to the pipe of inlet tube 110, the fluid that is used for discharging from injector 150 is fed to inlet tube 110 once more.This pipe is called fluid issuing guiding tube 163.And, circulating pump 163 is installed on fluid intake guiding tube 163, in the continuous circulation or removal process of cleaning ball 142, circulating pump 163 is by being fed to injector 150 with fluid from inlet tube 110 along a direction rotation.
Operation according to the auto cleaning system 100a of second embodiment of the invention will be described below.
In the accompanying drawings, the continuous cyclic process of solid arrow (→) expression cleaning ball 142.The process of cleaning ball 142 is reclaimed in dash-dot arrows (--→) expression.
At first, in the dirt for heat-transfer pipe 122 inner surfaces of removing heat exchanger 120 circulates the process of cleaning ball 142 continuously, in the motor operation valve 164 and 164a on being contained in ball supply pipe 137 respectively and on supply and the recovery control valve 147, the motor operation valve 164a that is contained in supply and reclaims on the control valve 147 keeps its closed condition, and wherein ball supply pipe 137 and supply and recovery control valve 147 are connected respectively to the outlet 145 of cleaning ball hold-up tank 140 and the fluid tap 146 that cleaning ball hold-up tank 140 lower ends form.Iff opening the motor operation valve 164 that is contained on the ball supply pipe 137, and startup is contained in the circulating pump 162 on the fluid intake guiding tube 161, then some fluids that will be fed in the heat exchanger 120 by inlet tube 110 suck fluid intake guiding tube 161, as shown in Figure 7.Subsequently, fluid is fed to injector 150 by circulating pump 162.Injector 150 is discharged the fluid of supply towards fluid issuing guiding tube 163.The fluid of discharging enters near the inlet tube 110 of heat exchanger 120 inlets once more through fluid issuing guiding tube 163.
Then, injector 150 is discharged fluid descends the pressure in the ball supply pipe 137, thereby produces injector 150 suction forces.As a result, cleaning ball in cleaning ball hold-up tank 142 142 and fluid move to ball supply pipe 137 under the suction force effect of injector 150.Be fed to the cleaning ball 142 and the fluid of ball supply pipe 137,, be inhaled into the inlet tube 110 that stretches out from heat exchanger 120 inlets through the fluid issuing guiding tube 163 that is connected to the injector 150 of ball supply pipe 137 and is connected to injector 150 upper ends.After this, cleaning ball 142 and fluid mix with the fluid that driving pump 112 on being contained in inlet tube 110 is fed in the heat exchanger 120, then are fed to the heat-transfer pipe 122 of heat exchanger 120.As a result, cleaning ball 142 takes out stains from heat-transfer pipe 122 inner surfaces when passing heat-transfer pipe 122.
The cleaning ball 142 that has cleaned heat-transfer pipe 122 is discharged in the bulb spacer 130 that is connected to heat exchanger 120 outlets 124.Subsequently, by the separating plate in the bulb spacer 130 132 cleaning ball 142 is separated with fluid.The process of separating cleaning ball 142 and fluid in bulb spacer 130 will be discussed in more detail below.
The suction force that produces in the injector 150 acts on the ball outlet 135 of bulb spacer 130 by cleaning ball hold-up tank 140.Then, by the commutation guide body 134 of separating plate 132 lower limbs, the cleaning ball 142 that is in the bulb spacer 130 is directed to the ball outlet 135 that bulb spacer 130 lower ends form.Be directed into the cleaning ball 142 of ball outlet 135, under the suction force effect of injector 150, sequentially pass through ball recovery tube 138, cleaning ball hold-up tank 140 and ball supply pipe 137, and enter heat exchanger 120 once more.Like this, cleaning ball 142 circulates the required time continuously through above-mentioned route, thus the inner surface of the heat-transfer pipe of installing in the cleaning heat exchanger 120 122.
The process that the cleaning ball 142 that has separated with fluid in bulb spacer 130 is recovered in the cleaning ball hold-up tank 140 is as follows: when circulating pump 162 keeps its driving condition, the motor operation valve 164a that is contained in supply and reclaims on the control valve 147 opens, and closes the motor operation valve 164 that is contained on the ball supply pipe 137.Then, as shown in Figure 7, the fluid discharging operation by injector 150 reduces to supply and reclaims pressure in the control valve 147, thereby produces suction force.Thus, the fluid that is in the cleaning ball hold-up tank 140 is fed to supply and reclaims control valve 147.The result, under the suction force that acts on cleaning ball hold-up tank 140, the cleaning ball 142 that will separate with fluid by the separating plate 132 of bulb spacer 130, with some fluids, after through the ball recovery tube 138 that connects ball outlet 135 that bulb spacer 130 lower ends form and the inlet 144 of cleaning ball hold-up tank 140, be recovered in the collecting net 141 that is provided with in the cleaning ball hold-up tank 140.
Fig. 9 represents the automatic heat exchanger cleaning systems according to third embodiment of the invention.To explain the structure of the 3rd embodiment below.
The part that the 3rd embodiment is identical with the first embodiment auto cleaning system 100 is represented with identical reference number.
As shown in Figure 9, comprise one or more heat exchanger 120a, 120b and 120c according to the auto cleaning system 100b of the 3rd embodiment, each heat exchanger has inlet tube 110 at its first end, has outlet 124 at its second end.Among each heat exchanger 120a, 120b and the 120c many heat-transfer pipes 122 are housed.This auto cleaning system 100b also comprises bulb spacer 130, and this bulb spacer 130 is connected to the outlet 124 of heat exchanger 120a, 120b and 120c, and wherein has separating plate 132, and the cleaning ball 142 that is used for discharging from outlet 124 separates with fluid.Auto cleaning system 100b also comprises ball supply pipe 137 and ball recovery tube 138, they are connected respectively to the outlet 145 and the inlet 144 of cleaning ball hold-up tank 140, thereby ball recovery tube 138 is connected to the ball outlet 135 of bulb spacer 130, and cleaning ball 142 is recovered in the cleaning ball hold-up tank 140 through over-heat-exchanger 120a, 120b and 120c circulation or with cleaning ball 142.Auto cleaning system 100b also comprises cleaning ball hold-up tank 140, all is communicated with ball supply pipe 137 and ball recovery tube 138.Collecting net 141 is housed in the cleaning ball hold-up tank 140, is used to collect cleaning ball 142.Auto cleaning system 100b also comprises supply and reclaims control valve 147, be connected to the lower end and the ball supply pipe 137 of cleaning ball hold-up tank 140, thereby when injector 150a, 150b and 150c discharge fluid recovery cleaning ball 142, make the fluid that is in the cleaning ball hold-up tank 140 be fed to ball supply pipe 137.Auto cleaning system 100b also comprises one or more injector 150a, 150b and 150c, they are connected to ball supply pipe 137 and the fluid of circulating pump 162 supplies are discharged, reduce the pressure in ball supply pipe 137 or supply and the recovery control valve 147, thereby cleaning ball 142 circulations are recovered in the cleaning ball hold-up tank 140 through over-heat-exchanger 120 or with cleaning ball 142.Auto cleaning system 100b also comprises polymorphic type shunt valve 160, wherein have one or more fluid intake guiding tube 161a, 161b and 161c and fluid issuing guiding tube 163a, 163b and 163c, fluid is flowed out through injector 150a, 150b and 150c from inlet tube 110, enter the inlet tube 110 that connects injector 150a, 150b and 150c once more.Auto cleaning system 100b also comprises circulating pump 162, and circulating pump 162 is contained in fluid intake guiding tube 161c and upward and along a direction supplies fluid to injector 150a, 150b and 150c, thereby realizes supply and reclaim cleaning ball 142.Auto cleaning system 100b also comprises motor operation valve 164,164a, 165a, 165b and 165c, be contained in respectively on ball supply pipe 137, supply and recovery control valve 147 and fluid intake guiding tube 161a, 161b and the 161c, injector 150a, 150b and 150c are connected to circulating pump 162, thereby according to the opening supply of motor operation valve or reclaim cleaning ball 142, and fluid optionally is fed to injector 150a, 150b and 150c according to the opening of motor operation valve.
Here, according to each heat exchanger 120a, 120b and 120c, bulb spacer 130 and each injector 150a, 150b and the 150c of the 3rd embodiment, have and the structure identical according to the heat exchanger 120 of first embodiment, bulb spacer 130 and injector 150.And the cleaning ball hold-up tank 140 of the 3rd embodiment has the structure identical with the cleaning ball hold-up tank 140 of second embodiment.Therefore, do not need further to explain heat exchanger 120a, 120b and 120c, bulb spacer 130, injector 150a, 150b and 150c and cleaning ball hold-up tank 140.Only explain the 3rd embodiment particular structure.
In the 3rd embodiment, inlet tube 110 and ball supply pipe 137 comprise arm 110a, 110b and 110c and 136a, 136b and 136c, and they are communicated with one or more injector 150a, 150b and 150c with multiplet.In addition, the outlet 124 that is connected to bulb spacer 130 comprises arm 124a, 124b and 124c.The end of arm 124a, 124b and 124c forms a pipe that is communicated with the inlet of bulb spacer 130.
Simultaneously, check- valves 137b, 137c and 137d are contained on corresponding arm 136a, the 136b and 137c of ball supply pipe 137, wherein ball supply pipe 137 is connected to injector 150a, 150b and 150c with motor operation valve 164, thereby is preventing through the process of over-heat-exchanger 120 circulation cleaning balls 142 that from cleaning ball hold-up tank 140 cleaning ball 142 from refluxing.
Auto cleaning system 100b with third embodiment of the invention of said structure, its method of operation is identical with the auto cleaning system 100a of second embodiment.In the process of continuous circulation cleaning ball 142, discharge the suction force that fluid produces by one or more injector 150a, 150b and 150c, promptly, be connected to three injector 150a, 150b and the 150c of three heat exchanger 120a, 120b and 120c by fluid issuing guiding tube 163a, 163b and 163c, cleaning ball 142 is sucked ball supply pipes 137 from cleaning ball hold-up tank 140.Arm 137a, 137b and the 137c of the ball supply pipe 137 of the cleaning ball 142 that sucks ball supply pipe 137 by being connected to respective injectors 150a, 150b and 150c are fed to injector 150a, 150b and 150c.Subsequently, by injector 150a, 150b and 150c being connected to fluid issuing guiding tube 163a, 163b and the 163c of heat exchanger 120a, 120b and 120c, cleaning ball 142 is fed to inlet tube 110a, 110b and the 110c that stretches out from heat exchanger 120a, 120b and 120c inlet.After this, cleaning ball 142 mixes with the fluid that the driving pump 112 that is contained in inlet tube 110 is fed to heat exchanger 120a, 120b and 120c, and then cleaning ball 142 and fluid are fed to the heat-transfer pipe 122 of heat exchanger 120a, 120b and 120c.As a result, cleaning ball 142 is at the dirt through removing heat-transfer pipe 122 inner surfaces in the heat-transfer pipe 122.Under the suction force effect of injector 150a, 150b and 150c, cleaning ball 142 through heat-transfer pipe 122, export 135 inlet tube 110a, 110b and 110c from the ball of bulb spacer 130, form motion repeatedly through ball recovery tubes 138, cleaning ball hold-up tank 140 and ball supply pipe 137 arrival heat exchanger 120a, 120b and 120c.Like this, the scheduled time of circulating continuously through above-mentioned route, heat-transfer pipe 122 inner surfaces of cleaning ball 142 sanitizer cartridges in heat exchanger 120a, 120b and 120c.Simultaneously, the process that reclaims cleaning ball 142 is identical with cleaning ball 142 removal process of the second embodiment auto cleaning system 100a, does not therefore need further explanation.
A heat exchanger 120a in needs cleanings three heat exchanger 120a, 120b and the 120c, fluid is fed to fluid intake guiding tube 161a by circulating pump 162 from inlet tube 110, and only is fed to the injector 150a that is connected with the heat exchanger 120a that must clean by fluid issuing guiding tube 163a.After this, discharge fluid by injector 150a cleaning ball 142 is sucked ball supply pipe 137, be fed to required heat exchanger 120a again, thus the heat-transfer pipe 122 of cleaning heat exchanger 120a.For to this further explanation, three heat exchanger 120a, 120b and 120c, three injector 150a, 150b and 150c, three fluid intake guiding tube 161a, 161b and 161c and three motor operation valve 165a, 165b and 165c are labeled as reference symbol A, B and C.
At first, for the heat-transfer pipe 122 of cleaning heat exchanger A120a only, disable motor operation valve B165b and C165c, above-mentioned two valves are contained in respectively on the fluid intake guiding tube B161b and C161c that connects injector B150b and C150c and inlet tube 110, open motor operation valve A165a simultaneously, this valve is contained on the fluid intake guiding tube A161a that connects injector A150a and inlet tube 110.Then, by the fluid of circulating pump 162 suction inlet pipes 110, be fed to injector A150a through the fluid intake guiding tube A161a that opens.As a result, discharge the cleaning ball 142 that fluid sucks ball supply pipe 137, then be supplied to heat exchanger A120a by injector A150a, thus the heat-transfer pipe 122 of cleaning heat exchanger A120a.For the heat-transfer pipe 122 of cleaning heat exchanger B120b only, according to method same as described above, open the motor operation valve B165b that is contained on the fluid intake guiding tube B161b corresponding, keep remaining motor operation valve A165a and C165c to close simultaneously with heat exchanger B120b.Then, by the fluid of circulating pump 162 suction inlet pipes 110, be fed to injector B150b through the fluid intake guiding tube B161b that opens.As a result, discharge fluid by injector B150b cleaning ball 142 is fed to heat exchanger B120b, thus the heat-transfer pipe 122 of cleaning heat exchanger B120b.
For the heat-transfer pipe 122 of cleaning heat exchanger C120c only, according to method same as described above, open the motor operation valve C165c corresponding with heat exchanger C120c, keep motor operation valve A165a and B165b to close simultaneously, thereby fluid only is fed to injector C150c through fluid intake guiding tube C161c by circulating pump 162.
To explain the operation of auto cleaning system of the present invention in detail below.
Figure 10 represents the operation according to the auto cleaning system of first embodiment of the invention.
In the accompanying drawings, solid arrow (→)
The process of expression supply cleaning ball 142.Dash-dot arrows (--→)
The process of cleaning ball 142 is reclaimed in expression.
At (when system's off-duty time) under the SBR of system, fluid is fed to heat exchanger 120 by driving pump 112, and cleaning ball 142 is in the collecting net 141 of cleaning ball hold-up tank 140.And circulating pump 162 is in closed condition, and wherein circulating pump 162 is contained on the fluid intake guiding tube 161 of the shunt valve 160 that connects injector 150 and fluid discharge pipe 126.In addition, the motor operation valve 164 that is contained on the fluid issuing guiding tube 163 of shunt valve 160 is in closed condition.Under such SBR, will explain the process of the heat-transfer pipe 122 inner surface dirts of supply cleaning ball 142 removing heat exchangers 120 below.
In the process of the heat-transfer pipe 122 inner surface dirts of supplying cleaning ball 142 removing heat exchangers 120, though the motor operation valve 164 that is contained on the fluid issuing guiding tube 163 of shunt valve 160 cuts out, the circulation route of shunt valve 160 is closed, but be contained in circulating pump 162 operations on the fluid intake guiding tube 161.Then, as shown in figure 10, under the suction force effect of circulating pump 162, some fluids to fluid discharge pipe 126, then suck injector 150 through fluid intake guiding tube 161 from bulb spacer 130 rows.Then, the fluid that sucks injector 150 flows into the cleaning ball hold-up tank 140 that cleaning ball 142 wherein is housed through supply and recovery control valve 147, wherein supplies and reclaim control valve 147 injector 150 to be connected to the inlet 144 that forms in the precalculated position of cleaning ball hold-up tank 140 lower ends.
Suck the fluid of cleaning ball hold-up tank 140, towards the outlet 145 that the position of inlet 144 forms, enter ball supply pipe 137 through cleaning ball hold-up tank 140 upper ends.At this moment, be in the cleaning ball 142 in the cleaning ball hold-up tank 140, entered ball supply pipe 137 simultaneously with the fluid of discharging through outlet 145.Subsequently, cleaning ball 142 enters flowing of ball supply pipe 137 along with fluid and moves to the inlet tube 110 of heat exchanger 120.
Suck the cleaning ball 142 of the inlet tube 110 of heat exchanger 120, mix with the fluid that is fed to heat exchanger 120 by the driving pump 112 that is contained in inlet tube 110, be fed to the heat-transfer pipe 122 of heat exchanger 120 then, thereby through heat-transfer pipe 122 time, remove the dirt of heat-transfer pipe 122 inner surfaces.Then, the cleaning ball 142 through heat-transfer pipe 122 is discharged into the bulb spacer 130 that is connected with the outlet 124 of heat exchanger 120, and separates with fluid by the separating plate 132 of bulb spacer 130.
For the cleaning ball 142 that will separate with fluid in bulb spacer 130 is recovered in the cleaning ball hold-up tank 140, open the motor operation valve 164 on the fluid issuing guiding tube 163 that is contained in shunt valve 160, circulating pump 162 keeps its operating condition simultaneously.Then, as shown in figure 10, under the suction force of circulating pump 162, enter some fluids of fluid discharge pipe 126, suck injector 150 by fluid intake guiding tube 161 from bulb spacer 130.Suck the fluid of injector 150, discharge under the effect of fluid, be discharged into fluid issuing guiding tube 163 through the motor operation valve of opening 164 at injector 150.
At this moment, discharge under the effect of fluid at injector 150, supply that is connected with the inlet 144 of cleaning ball hold-up tank 140 and the pressure decline of reclaiming control valve 147, thus produce suction force.Be in the fluid of cleaning ball hold-up tank 140, under the suction force effect that produces, be discharged into fluid issuing guiding tube 163 through supply and recovery control valve 147.Then, be in the cleaning ball 142 of bulb spacer 130, under the suction force that acts on cleaning ball hold-up tank 140, the guided-moving by commutation guide body 134 exports 135 to the ball of bulb spacer 130.Subsequently, the cleaning ball 142 that is directed into ball outlet 135 is recovered in the collecting net 141 of cleaning ball hold-up tank 140 through ball recovery tube 138, and wherein ball recovery tube 138 connects the ball outlet 135 of bulb spacer 130 and the outlet 145 of cleaning ball hold-up tank 140.
In addition, discharge the fluid that is discharged into fluid issuing guiding tube 163 under the fluid effects, flow into the fluid discharge pipe 126 that is connected with fluid issuing guiding tube 163, follow with fluid that bulb spacer 130 is discharged into fluid discharge pipe 126 and mix at injector 150.The fluid that mixes flows into other device (not shown) of fluid flow path subsequently.
Though for the purpose of explaining has disclosed the preferred embodiments of the present invention, persons skilled in the art should be realized that, under the situation of the scope of the invention that does not depart from the claim qualification and spirit, can make different modifications, increase and replace.
Industrial applicibility
As mentioned above, the invention provides a kind of automatic cleaning systems, wherein use the combination of pump and injector that cleaning ball is fed to heat exchanger, thereby eliminate the dirt that is attached to inner surface of heat transfering tube of heat exchanger. Particularly, the invention provides a kind of automatic heating interchanger cleaning systems, in the cleaning ball hold-up tank that wherein utilizes the one-way circulation pump to supply fluid to cleaning ball is housed, thereby cleaning ball is fed to the heat-transfer pipe of heat exchanger by the fluid of supply, and cleaning ball and fluid pass through heat-transfer pipe together, thereby remove the dirt of heat-transfer pipe. In addition, structure of the present invention is, when needs reclaim cleaning ball, open the motor operation valve that is contained in injector tip, fluid is fed to injector from circulating pump, and injector uses the nozzle in the injector to discharge fluid, thereby reduces the pressure in the cleaning ball hold-up tank, thus cleaning ball is recovered in the cleaning ball hold-up tank. Therefore, in the present invention, supply and recovery required time of cleaning ball can be regulated arbitrarily according to the condition of system installation site, thereby carry out easily supply and the recovery of cleaning ball. And, the invention solves the temporary transient problem of blocking of the cleaning ball that is fed to bulb spacer in the conventional art, thus the pressure loss of preventing and because the cleaning ball wearing and tearing that the temporary transient choking phenomenon of cleaning ball causes. And, with must be in normal direction and in the other direction the direction of rotation of cyclomorphosis circulating pump so that the installation cost that the present invention obviously reduces the fault occurrence probability and reduces circulating pump is compared in supply with the conventional art that reclaims cleaning ball.
Claims (22)
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2004-0045194 | 2004-06-15 | ||
| KR1020040045194A KR20040062919A (en) | 2004-06-15 | 2004-06-15 | heat exchanger tube auto cleaning system using ejector |
| KR1020040045194 | 2004-06-15 | ||
| KR1020040094993 | 2004-11-19 | ||
| KR10-2004-0094993A KR100472308B1 (en) | 2004-06-15 | 2004-11-19 | A heat exchanger auto cleaning system using ejector |
| KR10-2004-0094993 | 2004-11-19 | ||
| PCT/KR2005/001793 WO2005124261A1 (en) | 2004-06-15 | 2005-06-14 | A heat exchanger aoto cleaning system using ejector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1969166A CN1969166A (en) | 2007-05-23 |
| CN1969166B true CN1969166B (en) | 2010-06-16 |
Family
ID=37354021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005800193130A Expired - Fee Related CN1969166B (en) | 2004-06-15 | 2005-06-14 | Automatic cleaning system for heat exchangers using ejectors |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20040062919A (en) |
| CN (1) | CN1969166B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980435A (en) * | 2012-12-11 | 2013-03-20 | 机械工业第三设计研究院 | On-line cleaning method of inner wall of heat exchanger tube |
| CN103673744B (en) * | 2013-12-30 | 2015-11-18 | 中国大唐集团科学技术研究院有限公司 | Electric power plant condenser ball purging system and method |
| CN106288936B (en) * | 2016-11-02 | 2018-01-19 | 烟台亿通达蒸汽节能设备有限公司 | A kind of intelligent online scaler system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4420038A (en) * | 1980-06-30 | 1983-12-13 | Hitachi, Ltd. | Cleaning system for heat conductive conduits of a heat exchanger |
| US4554965A (en) * | 1983-03-17 | 1985-11-26 | Taprogge Gesellschaft Mbh | Ball-measuring system for self-cleaning heat exchanger |
| US5388636A (en) * | 1993-11-18 | 1995-02-14 | C.Q.M. Ltd. | System for cleaning the inside of tubing |
| CN1169341A (en) * | 1996-06-25 | 1998-01-07 | 球技术能源有限公司 | Cleaning system for cleaning fluid-conveying pipeline |
| CN2302495Y (en) * | 1997-06-16 | 1998-12-30 | 大连华峰发展公司 | Automatic cleaning device for heat exchanger |
| JP2001272199A (en) * | 2000-03-29 | 2001-10-05 | Hitachi Plant Eng & Constr Co Ltd | Cleaning equipment for heat exchangers |
| KR20030055238A (en) * | 2003-06-12 | 2003-07-02 | 설원실 | Heat exchanger tube automatic cleaning device using pump |
| CN2580386Y (en) * | 2002-09-28 | 2003-10-15 | 倪永刚 | On-line automatic cleaning device for condensator heat exchange tube inner wall |
-
2004
- 2004-06-15 KR KR1020040045194A patent/KR20040062919A/en active Pending
-
2005
- 2005-06-14 CN CN2005800193130A patent/CN1969166B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4420038A (en) * | 1980-06-30 | 1983-12-13 | Hitachi, Ltd. | Cleaning system for heat conductive conduits of a heat exchanger |
| US4554965A (en) * | 1983-03-17 | 1985-11-26 | Taprogge Gesellschaft Mbh | Ball-measuring system for self-cleaning heat exchanger |
| US5388636A (en) * | 1993-11-18 | 1995-02-14 | C.Q.M. Ltd. | System for cleaning the inside of tubing |
| CN1169341A (en) * | 1996-06-25 | 1998-01-07 | 球技术能源有限公司 | Cleaning system for cleaning fluid-conveying pipeline |
| CN2302495Y (en) * | 1997-06-16 | 1998-12-30 | 大连华峰发展公司 | Automatic cleaning device for heat exchanger |
| JP2001272199A (en) * | 2000-03-29 | 2001-10-05 | Hitachi Plant Eng & Constr Co Ltd | Cleaning equipment for heat exchangers |
| CN2580386Y (en) * | 2002-09-28 | 2003-10-15 | 倪永刚 | On-line automatic cleaning device for condensator heat exchange tube inner wall |
| KR20030055238A (en) * | 2003-06-12 | 2003-07-02 | 설원실 | Heat exchanger tube automatic cleaning device using pump |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20040062919A (en) | 2004-07-09 |
| CN1969166A (en) | 2007-05-23 |
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