CN202600537U - Constant-temperature constant-flow liquid supply apparatus - Google Patents
Constant-temperature constant-flow liquid supply apparatus Download PDFInfo
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- CN202600537U CN202600537U CN 201220137457 CN201220137457U CN202600537U CN 202600537 U CN202600537 U CN 202600537U CN 201220137457 CN201220137457 CN 201220137457 CN 201220137457 U CN201220137457 U CN 201220137457U CN 202600537 U CN202600537 U CN 202600537U
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Abstract
The utility model discloses a constant-temperature constant-flow liquid supply apparatus, comprising a controller, a communicating pipe, a first stepping motor, a second stepping motor, a third motor, a flow sensor, a first temperature sensor, a second temperature sensor, a first ball valve, a second ball valve, etc. After the liquid supply temperature preset value, the hot liquid temperature preset value and the liquid supply flow preset value are set by a user, the constant-temperature constant-flow liquid supply apparatus begins to work, an impeller of a hot and cold liquid adjusting device is rotated to drive the liquid in the first heat liquid branch pipe of the communicating pipe to flow into the first cold liquid branch pipe of the communicating pipe. In the liquid supply process, signals are fed back by the flow sensor, the first temperature sensor and the second temperature sensor, the controller controls the open degrees of the first ball valve and the second ball valve through the first stepping motor and the second stepping motor, and thereby constant-temperature constant-flow liquid supply is achieved.
Description
Technical field
The utility model relates to a kind of liquid feeding control system.
Background technology
Industry with live a lot of aspect, all need use liquid feed device, in different use occasions, liquid feed device is had different requirement.In bathing, the process of washing one's hands, people hope to open valve just can have the warm water of stability of flow to flow out; When buying beverage such as coffee from the fast food restaurant, people hope that the beverage of taking is exactly the temperature of oneself wanting; The liquid that medical treatment requires to flow to patient is near body temperature; Need continue to provide constant temperature iundustrial oil, process water of certain flow etc. in some commercial production.These all require liquid feed device to have the characteristic of constant rate and steady temperature.
For satisfying above requirement, the novel liquid feed device of fixed temperature or constant flow is invented.Comparatively general thermostatic mode is the mechanical type thermostatic mode at present, and thermal expansivity different metallic material is positioned over the spool two ends, utilizes different temperatures expansion of metal degree difference to regulate valve port opening, thereby regulates the purpose that flow is regulated temperature to reach.But because the non-linearity of thermometal material deformation; The method can't be regulated and control temperature more accurately; And the position that also needs manual adjustment spool two ends metal material before using is so that the initial temperature of fluid reaches demand numerical value, and adjustment process is comparatively loaded down with trivial details.Constant flow generally adopts the mode of pressure feedback, and the pressure that fluctuations in discharge can cause changes, and the difference of utilizing pressure to change promotes spool and changes valve port opening, thus the variation of compensating flowrate.But liquid source pressure changes or flow top hole pressure when changing, and this method can't realize the function of constant rate.Most of novel liquid feed devices are the function of single realization steady temperature or constant rate simultaneously, not with the two combination.
The utility model content
The purpose of the utility model provides a kind of constant flow, temperature constant that can guarantee for liquid, makes full use of the liquid feed device of the cooling liquid in the hydrothermal solution pipe simultaneously.
For realizing above-mentioned utility model purpose, the technical scheme that the utility model is taked is:
A kind of constant-temperature constant-current amount liquid feed device of the utility model comprises controller, communicating pipe, first stepper motor, second stepper motor, the 3rd motor, flow sensor, first temperature sensor and second temperature sensor, and said controller is connected with first stepper motor, second stepper motor, the 3rd motor, flow sensor, first temperature sensor and second temperature sensor respectively;
Be provided with the first cold liquid arm, the second cold liquid arm, the first hydrothermal solution arm and the second hydrothermal solution arm said communicating pipe;
The inlet of the first hydrothermal solution arm is connected with extraneous hydrothermal solution feed tube through second ball valve, and second ball valve is connected with the transmission shaft of second stepper motor through second shaft coupling;
The outlet of the outlet of the second cold liquid arm and the second hydrothermal solution arm is communicated with extraneous feed pipe through same first ball valve, and said first ball valve is connected with the first stepping drive axle of motor through first shaft coupling;
In communicating pipe, be provided with cold and hot liquid regulating device; Said cold and hot liquid regulating device comprises that the flow main body that can make in the first hydrothermal solution arm enters into the impeller in the first cold liquid arm, and the axle of impeller passes the wall of communicating pipe and is connected with the axle of the 3rd motor through the 3rd shaft coupling; Said cold and hot liquid regulating device is divided into cold liquid zone and hot fluid area with the inner chamber of communicating pipe; The inlet of the second cold liquid arm and the first cold liquid arm are positioned at said cold liquid zone; The inlet of the second hydrothermal solution arm and the first hydrothermal solution arm are positioned at said hot fluid area; Flow main body in the first cold liquid arm can enter in second cooling liquid tube, and the main body of liquid in the first hydrothermal solution arm can flow in the second hydrothermal solution arm;
Said first temperature sensor, flow sensor correspondingly are respectively applied for temperature and the flow of measuring the liquid that gets into extraneous said feed pipe, and second temperature sensor is used to measure the temperature of the liquid that gets into the first hydrothermal solution arm.
Further; The utility model gets into temperature and the feed flow temperature preset value of liquid of extraneous feed pipe when inequality when first temperature sensor detects; Controller is used to instruct the second stepper motor work and drives second ball valve and rotate, and the flow of the liquid that gets into the first hydrothermal solution arm is done corresponding the adjusting;
The temperature of the liquid in second temperature sensor detects the first hydrothermal solution arm is during more than or equal to hydrothermal solution temperature preset value, and the flow main body in the first hydrothermal solution arm enters in the second hydrothermal solution arm; When the temperature of the liquid in the first hydrothermal solution arm during less than hydrothermal solution temperature preset value; Controller is used to instruct the first step to advance machine operation so that first ball valve is closed; And controller instructs the 3rd machine operation and impeller to rotate, and makes the flow main body in the first hydrothermal solution arm enter into the first cold liquid arm;
When flow sensor detects flow and the feed flow flow preset value of the liquid that gets into extraneous feed pipe when inconsistent; Controller is used to instruct the first step to advance machine operation and drives first ball valve and rotate, and the flow of the liquid that gets into extraneous feed pipe is done corresponding the adjusting.
Further; The said first hydrothermal solution arm of the utility model props up tube body by first hydrothermal solution and cold and hot liquid connecting pipe constitutes; First hydrothermal solution is propped up tube body and is connected with an end of cold and hot liquid connecting pipe, and the other end of cold and hot liquid connecting pipe is connected with extraneous hydrothermal solution feed tube through second ball valve.
Further, the utility model is at the boundary of said cold liquid zone and hot fluid area, and the internal diameter of communicating pipe and the external diameter of said impeller are complementary.
Further, the said cold and hot liquid regulating device of the utility model comprises that also the center has the dividing plate of through hole, and the internal diameter of the external diameter of impeller and the through hole of said dividing plate is complementary and impeller places in the through hole of dividing plate, and the outer rim of dividing plate is fixedly connected with the inwall of communicating pipe.
The another kind of constant-temperature constant-current amount liquid feed device of the utility model comprises controller, communicating pipe, first stepper motor, the 4th stepper motor, the 3rd motor, flow sensor, first temperature sensor and second temperature sensor, and said controller is connected with first stepper motor, the 4th stepper motor, the 3rd motor, flow sensor, first temperature sensor and second temperature sensor respectively;
Be provided with the first cold liquid arm, the second cold liquid arm, the first hydrothermal solution arm and the second hydrothermal solution arm said communicating pipe;
The inlet of the first cold liquid arm is connected with extraneous cold liquid feed tube through the 3rd ball valve, and the 3rd ball valve is connected with the transmission shaft of the 4th stepper motor through the 3rd shaft coupling;
The outlet of the outlet of the second cold liquid arm and the second hydrothermal solution arm is communicated with extraneous feed pipe through same first ball valve, and said first ball valve is connected with the first stepping drive axle of motor through first shaft coupling;
In communicating pipe, be provided with cold and hot liquid regulating device; Said cold and hot liquid regulating device comprises that the flow main body that can make in the first hydrothermal solution arm enters into the impeller in the first cold liquid arm, and the axle of impeller passes the wall of communicating pipe and is connected with the axle of the 3rd motor through the 3rd shaft coupling; Said cold and hot liquid regulating device is divided into cold liquid zone and hot fluid area with the inner chamber of communicating pipe; The inlet of the second cold liquid arm and the first cold liquid arm are positioned at said cold liquid zone; The inlet of the second hydrothermal solution arm and the first hydrothermal solution arm are positioned at said hot fluid area; Flow main body in the first cold liquid arm can enter in second cooling liquid tube, and the main body of liquid in the first hydrothermal solution arm can flow in the second hydrothermal solution arm;
Said first temperature sensor, flow sensor correspondingly are respectively applied for temperature and the flow of measuring the liquid that gets into extraneous said feed pipe, and second temperature sensor is used to measure the temperature of the liquid that gets into the first hydrothermal solution arm.
Further; The utility model gets into temperature and the feed flow temperature preset value of liquid of extraneous feed pipe when inequality when first temperature sensor detects; Controller is used to instruct the 4th stepper motor work and drives the 3rd ball valve and rotate, and the flow of the liquid that gets into the first cold liquid arm is done corresponding the adjusting;
The temperature of the liquid in second temperature sensor detects the first hydrothermal solution arm is during more than or equal to hydrothermal solution temperature preset value, and the flow main body in the first hydrothermal solution arm enters in the second hydrothermal solution arm; When the temperature of the liquid in the first hydrothermal solution arm during less than hydrothermal solution temperature preset value; Controller is used to instruct the first step to advance machine operation so that first ball valve is closed; And controller instructs the 3rd machine operation and impeller to rotate, and makes the flow main body in the first hydrothermal solution arm enter into the first cold liquid arm;
When flow sensor detects flow and the feed flow flow preset value of the liquid that gets into extraneous feed pipe when inconsistent; Controller is used to instruct the first step to advance machine operation and drives first ball valve and rotate, and the flow of the liquid that gets into extraneous feed pipe is done corresponding the adjusting.
Further; The said first hydrothermal solution arm of the utility model props up tube body by first hydrothermal solution and cold and hot liquid connecting pipe constitutes; First hydrothermal solution is propped up tube body and is connected with an end of cold and hot liquid connecting pipe, and the other end of cold and hot liquid connecting pipe is connected with extraneous hydrothermal solution feed tube through second ball valve.
Further, the utility model is at the boundary of said cold liquid zone and hot fluid area, and the internal diameter of communicating pipe and the external diameter of said impeller are complementary.
Further, the said cold and hot liquid regulating device of the utility model comprises that also the center has the dividing plate of through hole, and the internal diameter of the through hole of impeller and said dividing plate is complementary, and the outer rim of dividing plate is fixedly connected with the inwall of communicating pipe.
Compared with prior art, the beneficial effect of the utility model is:
The utility model combines temperature control and flow control, the mechanism design innovation, and idea is unique, and is easy to operate, and control accurately provides a kind of new selection for needs provide the occasion of constant temperature, constant current quantity of fluid.
The utility model has overcome the existing defective of liquid feed device of prior art through structural innovation, really realizes the steady temperature and the constant rate of feed flow simultaneously.The temperature sensor of the fluid temperature of the utility model through being provided for measuring the first hydrothermal solution arm; Whether the fluid temperature in the monitoring hydrothermal solution pipe meets the demands; And the temperature of the liquid in the first hydrothermal solution arm is during less than hydrothermal solution temperature preset value; Be positioned at the supercharging impeller of boundary of cold liquid zone and the hot fluid area of communicating pipe through startup, the liquid that is lower than hydrothermal solution temperature preset value in the hot fluid area is pressed in the cold liquid zone, can avoid the waste of the cooling liquid in the hydrothermal solution pipe; Through being provided for measuring the temperature sensor of the temperature that gets into extraneous feed pipe; Fluid temperature in the monitoring feed pipe; And regulate the flow flow of hydrothermal solution or regulate the flow flow of cold liquid through controlling ball valve in the first cold liquid arm through controlling ball valve in the first hydrothermal solution arm; Thereby the ratio of hydrothermal solution and cold liquid realizes the constant of feed flow temperature in the flow of change entering feed pipe; Through being provided for measuring the flow sensor of the fluid flow in the feed pipe; Directly monitor the feed flow flow; And through the second cold liquid arm of control communicating pipe and the single adjusting feed flow of the ball valve flow in the second hydrothermal solution arm exit, thereby realized independently controlling of flow and temperature.Whole device adopts full-electronic control, and is simple to operate, and control has accurately realized constant fluid temperature and constant fluid flow function simultaneously.
Description of drawings
Fig. 1 is the one-piece construction synoptic diagram of the utility model liquid feed device;
Fig. 2 is the enlarged diagram of A portion among Fig. 1;
Fig. 3 is the cut-open view in A-A cross section among Fig. 2;
Fig. 4 is the cut-open view in B-B cross section among Fig. 2;
Fig. 5 is the structural representation of the another kind of embodiment of the utility model communicating pipe.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Fig. 1 to Fig. 4 shows a kind of embodiment of the utility model.To shown in Figure 4, constant-temperature constant-current amount liquid feed device mainly comprises first stepper motor 1, first shaft coupling 2, first ball valve 3, flow sensor 4, second temperature sensor 5, feed pipe 7, second stepper motor 8, second shaft coupling 9, the second motor frame 10, communicating pipe 11, the 3rd motor 14, the 3rd shaft coupling 15, cold and hot liquid connecting pipe 17, second ball valve 18, hydrothermal solution feed tube 19, second temperature sensor 21, controller 22, impeller 16, first dividing plate 23, central baffle 24 and second partition 25 etc. like Fig. 1.
Like Fig. 1, shown in 2, be provided with the cold liquid arm of the first cold liquid arm 11.1, second 11.2, the first hydrothermal solution arm 11.3 and the second hydrothermal solution arm 11.4 communicating pipe 11.The cold liquid of the cold liquid feed tube (not shown) that comes from the outside gets into communicating pipe 11 via the inlet of the first cold liquid arm 11.1.
Like Fig. 1, shown in 2, the first hydrothermal solution arm 11.3 in the present embodiment props up tube body 11.3.1 by first hydrothermal solution and cold and hot liquid connecting pipe 17 constitutes.Wherein, first hydrothermal solution is propped up tube body 11.3.1 and is connected with an end of cold and hot liquid connecting pipe 17, and the other end of cold and hot liquid connecting pipe 17 is connected with extraneous hydrothermal solution feed tube 19 through second ball valve 18.Hydrothermal solution in the hydrothermal solution feed tube 19 is propped up tube body 11.3.1 via cold and hot liquid connecting pipe 17, first hydrothermal solution successively and is got into communicating pipe 11.Use cold and hot liquid connecting pipe 17 can make things convenient for interconnecting of each pipeline, and conveniently cold and hot liquid regulating device is installed in the inside of communicating pipe 11.
When not using cold and hot liquid connecting pipe 17, hydrothermal solution feed tube 19 can directly prop up tube body 11.3.1 through second ball valve 18 and first hydrothermal solution and be connected.
As shown in Figure 1, the outlet of the outlet of the second cold liquid arm 11.2 and the second hydrothermal solution arm 11.4 is communicated with the inlet of feed pipe 7 through same first ball valve 3.The outlet of feed pipe 7 is connected with an end of first ell 6, and the other end of first ell 6 is connected with flow sensor 4, and flow sensor 4 is used to measure the flow flow that gets into feed pipe 7.First temperature sensor 5 can be fixed on first ell 6, and its measuring junction is positioned at first ell 6, is used to measure the fluid temperature that gets into feed pipe 7.Second ell 20 is connected with hydrothermal solution feed tube 19.Second temperature sensor 21 can be fixed on second ell 20, and its measuring junction is positioned at second ell 20, is used to measure the temperature of the liquid that gets into the first hydrothermal solution arm 11.3.
In communicating pipe 11, be provided with cold and hot liquid regulating device.Fig. 1 two kinds of cold and hot liquid regulating devices extremely shown in Figure 5 constitute by impeller 16 and dividing plate.To the cold and hot liquid regulating device shown in Figure 4, dividing plate integral body is spliced to be fixedly connected mode with second partition 25 by first dividing plate 23, central baffle 24 successively at Fig. 1.Wherein, first dividing plate 23 is a semicircular plate with second partition 25, and central baffle 24 has the rectangular slab of circular hole for the center.Extremely shown in Figure 3 like Fig. 1; Central baffle 24 is parallel with the axis of that section communicating pipe 11 at its place; First dividing plate 23 is all perpendicular with central baffle 24 with second partition 25; And first dividing plate 23 is positioned at a side at the upper surface place of central baffle 24, and 25 of second partitions are positioned at a side at the lower surface place of central baffle 24.After first dividing plate 23, central baffle 24 and second partition 25 were spliced into a dividing plate integral body, the outer rim of whole dividing plate was fixedly connected with the inwall of communicating pipe 11.Specifically; As shown in Figures 2 and 3; The semicircle outer rim of first dividing plate 23 and second partition 25 all is fixedly installed on the inwall of communicating pipe 11 along the circumferencial direction of communicating pipe 11, and two relative outer rims of central baffle 24 are axially being fixedly connected with the inwall of communicating pipe 11 along communicating pipe 11 then.
Like Fig. 1,2, shown in 4; The internal diameter of the through hole that open at the external diameter of impeller 16 and central baffle 24 centers is complementary; The through hole that is slightly less than central baffle 24 with the external diameter of impeller 16 is advisable; Can impeller 16 be placed in the through hole of central baffle 24 thus, and make whole cold and hot liquid regulating device that the inner chamber of communicating pipe 11 is divided into cold liquid zone I and hot fluid area II.Wherein, the inlet of the second cold liquid arm 11.2 and the first cold liquid arm 11.1 are positioned at cold liquid zone I, and the inlet of the second hydrothermal solution arm 11.4 and the first hydrothermal solution arm 11.3 are positioned at the hot fluid area II.Because the internal diameter of the external diameter of impeller 16 and the through hole of central baffle 24 is complementary; Thereby when impeller 16 work, the flow main body that is arranged in the first hydrothermal solution arm 11.3 of hot fluid area II can be rotated the first cold liquid arm 11.1 that the pressure that produces enters into cold liquid zone I because of impeller 16; And when impeller 16 is not worked; The flow main body that is located in the first cold liquid arm 11.1 in the cold liquid zone I can enter in second cooling liquid tube 11.2; The first hydrothermal solution arm, the 11.3 interior main body of liquid that are located on the hot fluid area II can flow in the second hydrothermal solution arm 11.4, and the flow main body in cold liquid zone I and the hot fluid area II can not circulate through the through hole of central baffle 24 each other.
As depicted in figs. 1 and 2, the axle of impeller 16 passes the wall of communicating pipe 11 and is connected with the axle of the 3rd motor 14 through the 3rd shaft coupling 15, and the 3rd motor 14 is fixed on the first hydrothermal solution arm 11.3 of communicating pipe 11 through the 3rd motor frame 13.Rotate by drives impeller 16 through instruction the 3rd motor 14 work for controller 22.
As shown in Figure 5, as the another kind of embodiment of the utility model, cold and hot liquid regulating device is made up of annular dividing plate 26 and impeller 16.The internal diameter of the external diameter of annular dividing plate 26 and the communicating pipe of corresponding position is suitable, so that the outer rim of annular dividing plate 26 is fixedly installed on the inwall of communicating pipe 11 along the circumferencial direction of communicating pipe 11; The internal diameter of annular dividing plate 26 then is complementary with the external diameter of impeller 16, and the internal diameter that is slightly less than annular dividing plate 26 with the external diameter of impeller 16 is advisable.
If at the boundary of cold liquid zone I and hot fluid area II, the internal diameter of communicating pipe 11 external diameter lucky and impeller 16 is complementary, and then can not use dividing plate.After impeller 16 is installed on communicating pipe 11, the axle of impeller 16 and the xsect approximate vertical of the communicating pipe 11 of its installed position.With in like manner preceding, because the external diameter and the internal diameter of communicating pipe 11 of impeller 16 are complementary, therefore, when impeller 16 work, the flow main body in the first hydrothermal solution arm 11.3 can enter into the first cold liquid arm 11.1; When impeller 16 is not worked, circulate each other in the slit between the inwall that the flow main body in cold liquid zone I and the hot fluid area II can be through communicating pipe 11 and the outer rim of impeller 16.
Need to prove; Impeller in the cold and hot liquid regulating device of the utility model can adopt multiple direction to arrange; And being not limited only to two kinds of cited in the utility model concrete conditions, the axle of impeller can be in 0～90 ° of scope with the angle of the xsect of the communicating pipe of its installation place.And if comprise dividing plate in the formation of cold and hot liquid regulating device, then the shape of dividing plate, number and mounting means also can have various ways.For example, in Fig. 2, cold and hot liquid regulating device is positioned at the first hydrothermal solution arm 11.3, in the first hydrothermal solution arm 11.3, the inner chamber of communicating pipe 11 is divided into cold liquid zone I and hot fluid area II thus.In fact, cold and hot liquid regulating device also can be positioned at the first cold liquid arm 11.1, thereby in the first cold liquid arm 11.1, the inner chamber of communicating pipe 11 is divided into cold liquid zone I and hot fluid area II.In addition, cold and hot liquid regulating device also can be crossed over the first cold liquid arm 11.1 and the first hydrothermal solution arm 11.3.Generally speaking; Can there be multiple mode the structure and the installation site of the cold and hot liquid regulating device of the utility model; Those skilled in the art can make various deformation to it; As long as it requires below satisfying: promptly cold and hot liquid regulating device can be divided into the inner chamber of communicating pipe 11 cold liquid zone and hot fluid area, makes the inlet of the second cold liquid arm 11.2 and the first cold liquid arm 11.1 be positioned at cold liquid zone, and the inlet of the second hydrothermal solution arm 11.4 and the first hydrothermal solution arm 11.3 are positioned at hot fluid area; When impeller 16 did not rotate, even " oozing mutually " phenomenon takes place because of there is the space in impeller periphery the liquid of cold liquid zone and hot fluid area, but a large amount of mutual stream can not take place in the flow main body in cold liquid zone and the hot fluid area; And when impeller 16 rotated, the pressure that impeller 16 rotations are produced then can make the flow main body in the first hydrothermal solution arm in the hot fluid area not get into the second hydrothermal solution arm 11.4 and enter in the first cold liquid arm 11.1 of cold liquid zone.
The utility model device when work, can be earlier according to three preset values of requirements set of user, instant heating liquid temp preset value, feed flow temperature preset value and feed flow flow preset value, wherein hydrothermal solution temperature preset value is greater than feed flow temperature preset value.These three preset values all both can be that a definite value also can be an interval.When preset value is one when interval, measured value and the corresponding preset value measured value that is meant inequality is not in this preset value interval.
When the temperature of the liquid in second temperature sensor, the 21 detected first hydrothermal solution arms 11.3 during more than or equal to hydrothermal solution temperature preset value, the flow main bodys in the first hydrothermal solution arm 11.3 enter in the second hydrothermal solution arm 11.4; When the temperature of the liquid in second temperature sensor, the 21 detected first hydrothermal solution arms 11.3 during less than hydrothermal solution temperature preset value; Controller 22 instructions first stepper motor 1 is worked so that first ball valve 3 is closed; Simultaneously; Controller 22 instruction the 3rd motor 14 work and impeller 16 is rotated, thus make the flow main bodys in the first hydrothermal solution arm 11.3 enter into the first cold liquid arm 11.1, flow out communicating pipes 11 and import in the cold liquid feed tube (not shown) via the first cold liquid arm 11.1.
When the temperature of the liquid in first temperature sensor, the 5 detected feed pipes 7 and feed flow temperature preset value are inequality; Controller 22 instructions second stepper motor 8 is worked and is driven 18 rotations of second ball valve; The flow of the liquid that gets into the first hydrothermal solution arm 11.3 is done corresponding the adjusting; Perhaps, controller 22 instruction the 4th stepper motor (not shown) work and drive the 3rd ball valve (not shown) and rotate are done corresponding the adjusting to the flow of the liquid that gets into the first cold liquid arm 11.1; Thus, adjusted the hydrothermal solution that gets into the second hydrothermal solution arm and the ratio of the cold liquid in the second cold liquid arm, thereby made the temperature that gets into the liquid in the feed pipe 7 identical with feed flow temperature preset value.
When the flow of the liquid in flow sensor 4 detects feed pipe 7 and feed flow flow preset value are inconsistent; Controller 22 instructions first stepper motor 1 is worked and is driven 3 rotations of first ball valve; The flow of the liquid of feed pipe 7 is done corresponding the adjusting, thereby make the flow of the liquid in the feed pipe 7 consistent with feed flow flow preset value.
Below to be to the utility model device of structure shown in Figure 5 that example specifies its process that realizes feed flow constant temperature, constant current amount function with Fig. 1 following:
Before assigning the feed flow instruction, the user preestablishes hydrothermal solution temperature preset value, feed flow temperature preset value and feed flow flow preset value.Controller 22 instructions second stepper motor 8 is worked and is driven 18 rotations of second ball valve, makes second ball valve 18 be in full-gear.At this moment, owing to do not assign the feed flow instruction as yet, first ball valve 3 is in closed condition, i.e. the outlet of the second cold liquid arm 11.2 and the second hydrothermal solution arm 11.4 is in closed condition.Simultaneously, second temperature sensor 21 is measured the fluid temperature of the inflow point of hydrothermal solution feed tube 19, and the temperature signal that measures is passed to controller 22, and controller 22 compares this temperature signal value and hydrothermal solution temperature preset value.When this temperature signal value was lower than hydrothermal solution temperature preset value, 14 energisings of controller 22 instruction the 3rd motor started, and impeller 16 is rotated, and the blade of impeller 16 drives that chilled flow main body gets into the first cold liquid arm 11.1 in the first hydrothermal solution pipe arm 11.3.When the temperature signal value that measures when second temperature sensor 21 was equal to or higher than hydrothermal solution temperature preset value, controller 22 controls the 3rd motor 14 stopped operating, and impeller 16 quits work.
The temperature signal value that measures at second temperature sensor 21 is equal to or higher than under the state of hydrothermal solution temperature preset value, and the user assigns the feed flow instruction.If the temperature and the feed flow temperature preset value of the liquid in first temperature sensor, the 5 detected feed pipes 7 are inequality; Controller 22 instructions second stepper motor 8 is worked and is driven 18 rotations of second ball valve; The flow of the liquid that gets into the first hydrothermal solution arm 11.3 is done corresponding the adjusting; Adjusted the hydrothermal solution that gets into the second hydrothermal solution arm and the ratio of the cold liquid in the second cold liquid arm thus, thereby made the temperature that gets into the liquid in the feed pipe 7 identical with feed flow temperature preset value.On the other hand, controller 22 instructions first stepper motor 1 drives first ball valve 3 and rotates, and first ball valve, 3 apertures are adjusted; Flow sensor 4 is measured the fluid flow in the exit of feed pipe 7 simultaneously; And the flow signal that measures passed to controller 22; Controller 22 compares this flow signal value and feed flow flow preset value; When this flow signal value reached feed flow flow preset value, controller 22 controls first stepper motor 1 stopped operating, and this moment, feed flow temperature and feed flow flow satisfied the setting requirement.
In the feed flow process; First temperature sensor 5 and flow sensor 4 are measured the temperature and the flow of the liquid of the feed pipe 7 of flowing through respectively with certain frequency; And temperature that measures and flow signal passed to controller 22; By controller 22 these two signal values are compared with feed flow temperature preset value and feed flow flow preset value respectively: when first temperature sensor, 5 detected temperature signal value were higher than feed flow temperature preset value, controller 22 instructions second stepper motor 8 was worked and is driven 18 rotations of second ball valve, and the aperture of second ball valve 18 is diminished; Reduce the content of hydrothermal solution in the feed flow flow, thereby the fluid temperature that gets in the feed pipe 7 is reduced; When first temperature sensor, 5 detected temperature signal value are lower than feed flow temperature preset value; Controller 22 instructions second stepper motor 8 is worked and is driven 18 rotations of second ball valve; Make the aperture of second ball valve 18 become big; Increase the content of hydrothermal solution in the feed flow flow, thereby the temperature of liquid in the feed pipe 7 is raise; When first temperature sensor, 5 detected temperature signal value equaled feed flow temperature preset value, controller 22 instructions second stepper motor 8 stopped operating.When flow sensor 4 detected flow signal values were higher than feed flow flow preset value, controller 22 instructions first stepper motor 1 was worked and is driven 3 rotations of first ball valve, first ball valve, 3 apertures is diminished, thereby the flow of flow in the feed pipe 7 is reduced; When flow sensor 4 detected flow signal values were lower than feed flow flow preset value, controller 22 instructions first stepper motor 1 was worked and is driven 3 rotations of first ball valve, first ball valve, 3 apertures is increased, thereby the flow of flow in the feed pipe 7 is increased; When flow sensor 4 detected flow signal values equaled feed flow flow preset value, controller 22 instructions first stepper motor 1 stopped operating.
Meanwhile, second temperature sensor 21 is measured the fluid temperature of the inflow point of hydrothermal solution feed tube 19 with certain frequency, and the temperature signal that measures is passed to controller 22, by controller 22 this temperature signal value and hydrothermal solution temperature preset value is compared.When making that owing to hydrothermal solution temperature instability second temperature sensor, 21 detected temperature values are lower than hydrothermal solution temperature preset value; The actual temperature of considering the feed flow flow is lower than feed flow temperature preset value often; Controller 22 instructions this moment first stepper motor 1 is worked and is driven 3 rotations of first ball valve; The ball valve of winning is closed, stop feed flow; Simultaneously, 14 work of controller 22 instructions the 3rd motor, impeller 16 is rotated, and the flow that the blade of impeller 16 drives in the first hydrothermal solution pipe arm 11.3 gets into the first cold liquid arm 11.1.When second temperature sensor, 21 detected temperature values during more than or equal to hydrothermal solution temperature preset value, controller 22 instructions the 3rd motor 14 quits work, and can recover feed flow again.
To sum up, through with adjusted, when the utility model device can be implemented in liquid source pressure, temperature variation, the temperature of feed flow flow and stability of flow be at preset value, thereby reach the function of constant temperature, constant current amount feed flow.
As the another kind of embodiment of the utility model, the inlet of the first cold liquid arm 11.1 can be connected with extraneous cold liquid feed tube through the 3rd ball valve, and the 3rd ball valve then is connected (not shown) through the tetrad axial organ with the transmission shaft of the 3rd stepper motor.When the temperature of the liquid in second temperature sensor, the 21 detected first hydrothermal solution arms 11.3 during more than or equal to hydrothermal solution temperature preset value, the flow main bodys in the first hydrothermal solution arm 11.3 enter in the second hydrothermal solution arm 11.4; When the temperature of the liquid in second temperature sensor, the 21 detected first hydrothermal solution arms 11.3 during less than hydrothermal solution temperature preset value, controller 22 instruction first stepper motor, 1 work and drive first ball valve 3 and rotate are closed the ball valve of winning, and stop feed flow; The 3rd motor 14 of controller 22 instructions is simultaneously worked and impeller 16 rotations, makes the flow main body in the first hydrothermal solution arm enter into the first cold liquid arm.When the temperature of the liquid in first temperature sensor, the 5 detected feed pipes 7 and feed flow temperature preset value are inequality; Then can drive the 4th ball valve through controller 22 instructions the 3rd stepper motor work rotates; The flow of the liquid that gets into the first cold liquid arm 11.1 is done corresponding the adjusting; The ratio of cold liquid and hydrothermal solution in the change feed flow flow, thus make the temperature of the liquid in the feed pipe 7 identical with feed flow temperature preset value.When flow sensor 4 detects flow and the feed flow flow preset value of liquid of feed pipe 7 when inconsistent; Controller 22 instructions first stepper motor 1 is worked and is driven 3 rotations of first ball valve; The flow of the liquid of feed pipe 7 is done corresponding the adjusting, thereby make the flow of the liquid in the feed pipe 7 identical with feed flow flow preset value.
Claims (10)
1. constant-temperature constant-current amount liquid feed device; It is characterized in that: comprise controller (22), communicating pipe (11), first stepper motor (1), second stepper motor (8), the 3rd motor (14), flow sensor (4), first temperature sensor (5) and second temperature sensor (21), said controller (22) is connected with first stepper motor (1), second stepper motor (8), the 3rd motor (14), flow sensor (4), first temperature sensor (5) and second temperature sensor (21) respectively;
Be provided with the first cold liquid arm (11.1), the second cold liquid arm (11.2), the first hydrothermal solution arm (11.3) and the second hydrothermal solution arm (11.4) said communicating pipe;
The inlet of the first hydrothermal solution arm (11.3) is connected with extraneous hydrothermal solution feed tube (19) through second ball valve (18), and second ball valve (18) is connected with the transmission shaft of second stepper motor (8) through second shaft coupling (9);
The outlet of the outlet of the second cold liquid arm and the second hydrothermal solution arm is communicated with extraneous feed pipe through same first ball valve (3), and said first ball valve (3) is connected with the transmission shaft of first stepper motor (1) through first shaft coupling (2);
In communicating pipe (11), be provided with cold and hot liquid regulating device; Said cold and hot liquid regulating device comprises that the flow main body that can make in the first hydrothermal solution arm (11.3) enters into the impeller (16) in the first cold liquid arm (11.1), and the axle of impeller (16) passes communicating pipe the wall of (11) and is connected with the axle of the 3rd motor (14) through the 3rd shaft coupling (15); Said cold and hot liquid regulating device is divided into cold liquid zone and hot fluid area with the inner chamber of communicating pipe (11); The inlet of the second cold liquid arm (11.2) and the first cold liquid arm (11.1) are positioned at said cold liquid zone; The inlet of the second hydrothermal solution arm (11.4) and the first hydrothermal solution arm (11.3) are positioned at said hot fluid area; Flow main body in the first cold liquid arm (11.1) can enter in second cooling liquid tube (11.2), and the main body of liquid in the first hydrothermal solution arm (11.3) can flow in the second hydrothermal solution arm (11.4);
Said first temperature sensor (5), flow sensor (4) correspondingly are respectively applied for temperature and the flow of measuring the liquid that gets into extraneous said feed pipe, and second temperature sensor (21) is used for measuring the temperature of the liquid that gets into the first hydrothermal solution arm (11.3).
2. constant-temperature constant-current amount liquid feed device according to claim 1 is characterized in that:
When first temperature sensor (5) detects temperature and the feed flow temperature preset value of the liquid that gets into extraneous feed pipe when inequality; Controller (22) is used to instruct second stepper motor (8) work and drives second ball valve (18) and rotate, and the flow of the liquid that gets into the first hydrothermal solution arm (11.3) is done corresponding the adjusting;
The temperature of the liquid in second temperature sensor (21) detects the first hydrothermal solution arm (11.3) is during more than or equal to hydrothermal solution temperature preset value, and the flow main body in the first hydrothermal solution arm enters in the second hydrothermal solution arm; When the temperature of the liquid in the first hydrothermal solution arm during less than hydrothermal solution temperature preset value; Controller (22) is used to instruct the first step to advance motor (1) work so that first ball valve (3) is closed; And controller (22) instruction the 3rd motor (14) is worked and impeller (16) rotation, makes the flow main body in the first hydrothermal solution arm enter into the first cold liquid arm;
When flow sensor (4) detects flow and the feed flow flow preset value of the liquid that gets into extraneous feed pipe when inconsistent; Controller (22) is used to instruct the first step to advance motor (1) work and drives first ball valve (3) and rotates, and the flow of the liquid that gets into extraneous feed pipe is done corresponding the adjusting.
3. constant-temperature constant-current amount liquid feed device according to claim 1 and 2; It is characterized in that: the said first hydrothermal solution arm (11.3) props up tube body by first hydrothermal solution and cold and hot liquid connecting pipe (17) constitutes; First hydrothermal solution is propped up tube body and is connected with an end of cold and hot liquid connecting pipe (17), and the other end of cold and hot liquid connecting pipe (17) is connected with extraneous hydrothermal solution feed tube (19) through second ball valve (18).
4. constant-temperature constant-current amount liquid feed device according to claim 1 and 2 is characterized in that: at the boundary of said cold liquid zone and hot fluid area, the external diameter of the internal diameter of communicating pipe (11) and said impeller (16) is complementary.
5. constant-temperature constant-current amount liquid feed device according to claim 1 and 2; It is characterized in that: said cold and hot liquid regulating device comprises that also the center has the dividing plate of through hole; The internal diameter of the external diameter of impeller and the through hole of said dividing plate is complementary and impeller places in the through hole of dividing plate, and the outer rim of dividing plate is fixedly connected with the inwall of communicating pipe (11).
6. constant-temperature constant-current amount liquid feed device; It is characterized in that: comprise controller (22), communicating pipe (11), first stepper motor (1), the 4th stepper motor (8), the 3rd motor (14), flow sensor (4), first temperature sensor (5) and second temperature sensor (21), said controller (22) is connected with first stepper motor (1), the 4th stepper motor (8), the 3rd motor (14), flow sensor (4), first temperature sensor (5) and second temperature sensor (21) respectively;
Be provided with the first cold liquid arm (11.1), the second cold liquid arm (11.2), the first hydrothermal solution arm (11.3) and the second hydrothermal solution arm (11.4) said communicating pipe;
The inlet of the first cold liquid arm (11.1) is connected with extraneous cold liquid feed tube through the 3rd ball valve, and the 3rd ball valve is connected with the transmission shaft of the 4th stepper motor through the 3rd shaft coupling;
The outlet of the outlet of the second cold liquid arm and the second hydrothermal solution arm is communicated with extraneous feed pipe through same first ball valve, and said first ball valve (3) is connected with the transmission shaft of first stepper motor (1) through first shaft coupling (2);
In communicating pipe (11), be provided with cold and hot liquid regulating device; Said cold and hot liquid regulating device comprises that the flow main body that can make in the first hydrothermal solution arm (11.3) enters into the impeller (16) in the first cold liquid arm (11.1), and the axle of impeller (16) passes the wall of communicating pipe and is connected with the axle of the 3rd motor (14) through the 3rd shaft coupling (15); Said cold and hot liquid regulating device is divided into cold liquid zone and hot fluid area with the inner chamber of communicating pipe (11); The inlet of the second cold liquid arm (11.2) and the first cold liquid arm (11.1) are positioned at said cold liquid zone; The inlet of the second hydrothermal solution arm (11.4) and the first hydrothermal solution arm (11.3) are positioned at said hot fluid area; Flow main body in the first cold liquid arm (11.1) can enter in second cooling liquid tube (11.2), and the main body of liquid in the first hydrothermal solution arm (11.3) can flow in the second hydrothermal solution arm (11.4);
Said first temperature sensor (5), flow sensor (4) correspondingly are respectively applied for temperature and the flow of measuring the liquid that gets into extraneous said feed pipe, and second temperature sensor (21) is used for measuring the temperature of the liquid that gets into the first hydrothermal solution arm (11.3).
7. constant-temperature constant-current amount liquid feed device according to claim 6 is characterized in that:
When first temperature sensor (5) detects temperature and the feed flow temperature preset value of the liquid that gets into extraneous feed pipe when inequality; Controller (22) is used to instruct the 4th stepper motor work and drives the 3rd ball valve and rotate, and the flow of the liquid that gets into the first cold liquid arm (11.1) is done corresponding the adjusting;
The temperature of the liquid in second temperature sensor (21) detects the first hydrothermal solution arm (11.3) is during more than or equal to hydrothermal solution temperature preset value, and the flow main body in the first hydrothermal solution arm enters in the second hydrothermal solution arm; When the temperature of the liquid in the first hydrothermal solution arm during less than hydrothermal solution temperature preset value; Controller (22) is used to instruct the first step to advance motor (1) work so that first ball valve (3) is closed; And controller (22) instruction the 3rd motor (14) is worked and impeller (16) rotation, makes the flow main body in the first hydrothermal solution arm enter into the first cold liquid arm;
When flow sensor (4) detects flow and the feed flow flow preset value of the liquid that gets into extraneous feed pipe when inconsistent; Controller (22) is used to instruct the first step to advance motor (1) work and drives first ball valve (3) and rotates, and the flow of the liquid that gets into extraneous feed pipe is done corresponding the adjusting.
8. according to claim 6 or 7 described constant-temperature constant-current amount liquid feed devices; It is characterized in that: the said first hydrothermal solution arm (11.3) props up tube body by first hydrothermal solution and cold and hot liquid connecting pipe (17) constitutes; First hydrothermal solution is propped up tube body and is connected with an end of cold and hot liquid connecting pipe (17), and the other end of cold and hot liquid connecting pipe (17) is connected with extraneous hydrothermal solution feed tube (19) through second ball valve (18).
9. according to claim 6 or 7 described constant-temperature constant-current amount liquid feed devices, it is characterized in that: at the boundary of said cold liquid zone and hot fluid area, the external diameter of the internal diameter of communicating pipe (11) and said impeller (16) is complementary.
10. according to claim 6 or 7 described constant-temperature constant-current amount liquid feed devices; It is characterized in that: said cold and hot liquid regulating device comprises that also the center has the dividing plate of through hole; The internal diameter of the through hole of impeller and said dividing plate is complementary, and the outer rim of dividing plate is fixedly connected with the inwall of communicating pipe (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220137457 CN202600537U (en) | 2012-04-04 | 2012-04-04 | Constant-temperature constant-flow liquid supply apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220137457 CN202600537U (en) | 2012-04-04 | 2012-04-04 | Constant-temperature constant-flow liquid supply apparatus |
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| CN202600537U true CN202600537U (en) | 2012-12-12 |
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| CN 201220137457 Expired - Lifetime CN202600537U (en) | 2012-04-04 | 2012-04-04 | Constant-temperature constant-flow liquid supply apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645942A (en) * | 2012-04-04 | 2012-08-22 | 浙江大学 | Constant-temperature and constant-flow-rate liquid supply device |
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2012
- 2012-04-04 CN CN 201220137457 patent/CN202600537U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102645942A (en) * | 2012-04-04 | 2012-08-22 | 浙江大学 | Constant-temperature and constant-flow-rate liquid supply device |
| CN102645942B (en) * | 2012-04-04 | 2014-11-12 | 浙江大学 | Constant-temperature and constant-flow-rate liquid supply device |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20121212 Effective date of abandoning: 20141112 |
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| RGAV | Abandon patent right to avoid regrant |