CN102594025B - Method and system for controlling liquid level of cooling medium in evaporative cooling sealing cavity - Google Patents
Method and system for controlling liquid level of cooling medium in evaporative cooling sealing cavity Download PDFInfo
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- CN102594025B CN102594025B CN201210047792.9A CN201210047792A CN102594025B CN 102594025 B CN102594025 B CN 102594025B CN 201210047792 A CN201210047792 A CN 201210047792A CN 102594025 B CN102594025 B CN 102594025B
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- 238000001816 cooling Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 28
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- 238000007789 sealing Methods 0.000 title abstract description 5
- 239000012530 fluid Substances 0.000 claims abstract description 15
- 230000002706 hydrostatic effect Effects 0.000 claims description 12
- 230000010412 perfusion Effects 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 8
- 230000037452 priming Effects 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000003068 static effect Effects 0.000 abstract description 2
- 238000007654 immersion Methods 0.000 description 10
- 238000001704 evaporation Methods 0.000 description 7
- 230000008020 evaporation Effects 0.000 description 7
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- 238000010586 diagram Methods 0.000 description 3
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- 230000005684 electric field Effects 0.000 description 2
- 238000005429 filling process Methods 0.000 description 2
- 239000003574 free electron Substances 0.000 description 2
- 238000001727 in vivo Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
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- 230000008859 change Effects 0.000 description 1
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- 239000004020 conductor Substances 0.000 description 1
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- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a system for controlling a liquid level of a cooling medium in an evaporative cooling sealing cavity. The control system comprises a piezoelectric element and a controller, wherein the piezoelectric element is fixedly arranged in the evaporative cooling sealing cavity; pole plates at the both sides of the piezoelectric element are vertically arranged at a set filling level, and the piezoelectric element generates a corresponding electric signal according to a fluid static pressure of the cooling medium which is stressed by the two pole plates at the opposite faces; and the controller obtains a result of judging that whether the top level of the cooling medium reaches the set filling face or not according to the intensity of the electric signal, and outputs a control signal for driving a corresponding execution element according to the judging result. Compared with the prior art, the control system provided by the invention has the advantages that the structure is simple and the error generated by man-made factors can be greatly reduced; and furthermore, the difficult problem of application of a soaked type evaporative cooling technology to flameproof electric equipment is solved without arranging an observing window on the equipment shell. On the basis, the invention further provides a method for controlling the liquid level of the cooling medium in the evaporative cooling sealing cavity.
Description
Technical field
The present invention relates to flame-proof type horizontal type technical field of motors, be specifically related to heat eliminating medium level control (LC) method and system in evaporative cooling seal chamber.
Background technology
Immersion type evaporation cooling technique is the novel cooling technology of one comparatively advanced at present, is widely used in the power consumptions such as horizontal machine, large-scale power device, mainframe computer workstation, generates heat on relatively more outstanding electric equipment.
Implement immersion type evaporation cooling technique, need cooled device sealing in a seal chamber, and (evaporative cooling medium is for liquid under a kind of normal temperature to pour into enough evaporative cooling mediums, and the megohmite insulant that density is large, colourless, tasteless, in seal chamber, the liquid level of liquid evaporative cooling medium should not have cooled device).The amount of heat produced when electric equipment runs, evaporative cooling medium temperature is raised and vaporization of seething with excitement, after the heat eliminating medium of vaporization and external condensation equipment carry out heat interchange, liquified flow is got back in seal chamber again, the heat that device produces can be dispersed in time the outside of electric equipment by above-mentioned evaporative cooling process, thus ensure that electric equipment normally runs.
In order to ensure the work safety of electric equipment, in above-mentioned evaporative cooling process, the pressure in seal chamber should remain normal pressure, therefore, must reserve certain space in seal chamber, to cushion volumetric expansion during evaporative cooling medium evaporation; Moreover the price comparison of current evaporative cooling medium is expensive.Accordingly, the evaporative cooling medium be circulated in seal chamber is not The more the better, but should control in a rational liquid level.The practice main is at present on the outer wall of seal chamber, offer a transparent view window structure, utilizes this window structure to observe the liquid level situation of evaporative cooling medium when annular seal space perfusion in vivo.This practice is that error is larger due to artificial factor on the one hand; On the other hand, for flame-proof type electric equipment, owing to requiring that flame proof casing must be complete, any opening can not be had, therefore, view window structure can not be adopted to observe the liquid level of evaporative cooling medium at seal chamber, thus the perfusion situation of uncontrollable evaporative cooling medium in seal chamber.
In view of this, need badly and improve for prior art, the filling liquid level of heat eliminating medium in seal chamber during effectively to control the evaporative cooling of flame-proof type electric equipment.
Summary of the invention
For above-mentioned defect, the technical matters that the present invention solves is, provides heat eliminating medium fluid level control system in a kind of evaporative cooling seal chamber, the filling liquid level of heat eliminating medium in seal chamber during for controlling the evaporative cooling of flame-proof type electric equipment exactly.On this basis, the present invention additionally provides the control method of heat eliminating medium fluid level control system in above-mentioned evaporative cooling seal chamber simultaneously.
Heat eliminating medium fluid level control system in evaporative cooling seal chamber provided by the invention, comprise piezoelectric element and controller, described piezoelectric element is fixed in evaporative cooling seal chamber, the both sides pole plate of described piezoelectric element is vertically arranged on setting and fills with liquid level place, and the hydrostatic pressure size of described piezoelectric element heat eliminating medium suffered by the pole plate of two on its opposite flank, produce corresponding electric signal; Whether the end face that described controller obtains heat eliminating medium according to the size of described electric signal arrives the judged result that liquid level is filled with in setting, and exports the control signal driving corresponding executive component according to described judged result.
Preferably, described executive component is pilot lamp or loudspeaker, and described pilot lamp or loudspeaker are opened or closed to described control signal.
Preferably, described controller is insulated gate bipolar transistor, be serially connected in the feed circuit of described pilot lamp or loudspeaker, two pole plates of described piezoelectric element are connected respectively on the positive and negative electrode of an electric capacity, described electric signal is converted to voltage signal and forms described control signal by described electric capacity, drives described insulated gate bipolar transistor to be switched on or switched off described feed circuit.
Preferably, the positive pole of the direct supply in described feed circuit is connected to after pilot lamp described in the negative pole that the control pole of described insulated gate bipolar transistor is connected to the positive pole of described electric capacity, source electrode is connected to the direct supply in described feed circuit, drain series or loudspeaker.
Preferably, described controller is single-chip microcomputer.
Described controller, described executive component is be arranged on the operation valve in heat eliminating medium priming line, and described operation valve is opened or closed to described control signal.
Heat eliminating medium level control (LC) method in evaporative cooling seal chamber provided by the invention, comprises the following steps:
Step 10, piezoelectric element is set at evaporative cooling seal chamber internal fixtion, the hydrostatic pressure size of described piezoelectric element heat eliminating medium suffered by the pole plate of two on its opposite flank, produce corresponding electric signal, the both sides pole plate of wherein said piezoelectric element is vertically arranged on setting and fills with liquid level place;
Step 20, obtain the top side location of the heat eliminating medium of current perfusion according to the size of described electric signal, and export corresponding control signal, drive the end face of corresponding executive component controlled cooling model medium and setting to fill with liquid level concordant.
Preferably, in step 20, first make the top side location of heat eliminating medium exceed the bottom surface certain altitude of described piezoelectric element, and then be down to concordant with the bottom surface of described piezoelectric element.
Preferably, in step 20, when the top side location of heat eliminating medium exceedes the end face of described piezoelectric element, light pilot lamp or open loudspeaker alert and manually stop perfusion, and manual drain heat eliminating medium; In the process of discharge heat eliminating medium, when the end face of heat eliminating medium is concordant with the bottom surface of described piezoelectric element, close pilot lamp or loudspeaker and alert manually stops discharge heat eliminating medium.
Preferably, in step 20, when the top side location of heat eliminating medium exceedes the end face of described piezoelectric element, light pilot lamp or open loudspeaker and stop perfusion by operation valve, starting to discharge heat eliminating medium simultaneously; In the process of discharge heat eliminating medium, when the end face of heat eliminating medium is concordant with the bottom surface of described piezoelectric element, closes pilot lamp or loudspeaker and stop discharging heat eliminating medium by operation valve.
Heat eliminating medium fluid level control system in evaporative cooling seal chamber provided by the invention, at evaporative cooling seal chamber internal fixtion, a piezoelectric element is set, and make the both sides pole plate of piezoelectric element vertically be arranged on setting and fill with liquid level place, the hydrostatic pressure size of piezoelectric element heat eliminating medium suffered by two pole plate will produce corresponding electric signal, whether the end face then obtaining heat eliminating medium by controller according to the size of described electric signal arrives the judged result that liquid level is filled with in setting, and the control signal driving corresponding executive component is exported according to described judged result, thus realize the accurate control of heat eliminating medium perfusion liquid level.Compared with prior art, technical scheme provided by the invention, greatly reduce the error that human factor produces, and structure is simple; In addition, technical scheme provided by the invention, need not arrange view window on apparatus casing, solves the difficult problem that immersion type evaporation cooling technique is applied on flame-proof type electric equipment.
In the preferred version of above-mentioned control system, what controller adopted is insulated gate bipolar transistor, be serially connected in the feed circuit of pilot lamp or loudspeaker, two pole plates of piezoelectric element are connected respectively on the positive and negative electrode of an electric capacity, described electric signal is converted to voltage signal and forms described control signal by electric capacity, drives described insulated gate bipolar transistor to be switched on or switched off described feed circuit.This design proposal, on the basis of low cost, is swift in response.
In the another kind of preferred version of above-mentioned control system, described executive component is be arranged on the operation valve in heat eliminating medium priming line, described operation valve is opened or closed to described control signal, the program is by being arranged on the automatic control of filling process of operation valve in heat eliminating medium priming line and chip microcontroller, improve control accuracy, save cost of labor simultaneously.
Heat eliminating medium level control (LC) method in evaporative cooling seal chamber provided by the invention, by the corresponding electric signal that the hydrostatic pressure size of heat eliminating medium suffered by piezoelectric element two pole plates produces, whether the end face obtaining heat eliminating medium arrives the judged result that liquid level is filled with in setting, greatly reduce the error that human factor produces, and view window need not be set on apparatus casing, solve the difficult problem that immersion type evaporation cooling technique is applied on flame-proof type electric equipment.
In a kind of preferred version of above-mentioned control method, first make the top side location of heat eliminating medium exceed the end face of described piezoelectric element, and then be down to concordant with the bottom surface of described piezoelectric element.Like this, can avoid fluctuating the error produced due to heat eliminating medium.
Accompanying drawing explanation
Fig. 1 is immersion type evaporative cooling flame-proof type horizontal type Induction Motor Structure schematic diagram;
Fig. 2 is that in the evaporative cooling seal chamber described in embodiment, in heat eliminating medium fluid level control system, piezoelectric element output signal gathers schematic diagram;
Fig. 3 is control circuit schematic diagram in heat eliminating medium fluid level control system in the evaporative cooling seal chamber described in embodiment.
Casing 10, stator 11, rotor 12, seal stator cavity 20, setting fill with liquid level 13;
Piezoelectric element P, electric capacity C1, insulated gate bipolar transistor IGBT, control pole G, source S, drain D, pilot lamp L, direct supply V.
Embodiment
Core of the present invention is to provide heat eliminating medium level control (LC) method and system in a kind of evaporative cooling seal chamber, its fundamental purpose is the equipment for adopting immersion type evaporation cooling technique, in the process to annular seal space perfusion in vivo heat eliminating medium, reduce and determine to pour into the error whether liquid level arrives desired location generation owing to artificially observing, and due to technical scheme provided by the invention, view window need not be set on the housing of equipment, therefore also solve the difficult problem that immersion type evaporation cooling technique is applied on flame-proof type electric equipment simultaneously.Present embodiment is illustrated below in conjunction with Figure of description.
Without loss of generality, present embodiment is described in detail using immersion type evaporative cooling flame-proof type horizontal type asynchronous motor as main body.Should be appreciated that the cognitive ability according to those skilled in the art, technical scheme provided by the invention is equally applicable to other immersion type evaporative cooling electric equipment, such as: mainframe computer workstation etc.This specific embodiment not forms the restriction to technical scheme.
Refer to Fig. 1, this figure is the structural representation of immersion type evaporative cooling flame-proof type horizontal type asynchronous motor, comprise and be arranged on stator 11 in casing 10 and rotor 12, wherein stator 11 is sealed in a seal stator cavity 20, heat eliminating medium is perfused with in this seal stator cavity 20, and stator 11 is soaked to realize the cooling (in Fig. 1, mark 13 institute refers to the setting filling liquid level position of heat eliminating medium) to stator by heat eliminating medium completely.This asynchronous motor employs heat eliminating medium fluid level control system in evaporative cooling seal chamber provided by the invention, to reduce heat eliminating medium in filling process, determines whether pour into liquid level arrives desired location and the error that produces owing to artificially observing.
In evaporative cooling seal chamber, heat eliminating medium fluid level control system comprises piezoelectric element and controller, this piezoelectric element is fixed in evaporative cooling seal chamber, and the both sides pole plate of this piezoelectric element is vertically arranged on setting filling liquid level place, in the course of work, the hydrostatic pressure size of piezoelectric element heat eliminating medium suffered by the pole plate of two on its opposite flank, produces corresponding electric signal; Whether the end face that controller obtains heat eliminating medium according to the size of this electric signal arrives the judged result that liquid level is filled with in setting, and exports the control signal driving corresponding executive component according to this judged result.
Heat eliminating medium level control (LC) method in evaporative cooling seal chamber provided by the invention, comprises the following steps:
Step 10, piezoelectric element is set at evaporative cooling seal chamber internal fixtion, the hydrostatic pressure size of this piezoelectric element heat eliminating medium suffered by the pole plate of two on its opposite flank, produce corresponding electric signal, wherein, the both sides pole plate of piezoelectric element is vertically arranged on setting and fills with liquid level place;
Step 20, obtain the top side location of the heat eliminating medium of current perfusion according to the size of described electric signal, and export corresponding control signal, drive the end face of corresponding executive component controlled cooling model medium and setting to fill with liquid level concordant.
Wherein, piezoelectric element refers on its two relative side, arrange positive and negative pole plate by the dielectric substance possessing piezoelectric effect (piezoelectric dielectric) respectively and the detecting element formed.Dielectric substance is not charged at ordinary times and show electric neutrality, when it is subject to the effect of external force in a certain direction, inside can produce class polarization phenomena, produce a large amount of free electron (electronegativity) simultaneously, the atomic nucleus losing electronics is electropositivity, thus form inner weak electric field, under the promotion of this inner weak electric field, the force-bearing surfaces of dielectric substance can accumulate out the amount of charge being enough to be detected by positive and negative pole plate.When external force disappears, due to nuclear attraction, free electron will be retracted in nuclear structure again, and now piezoelectric dielectric reverts to again uncharged electric neutrality state.Piezoelectric dielectric can be divided three classes: (1) quartz crystal class, belongs to natural monocrystal; (2) piezoelectric ceramics, belongs to the polycrystal of Prof. Du Yucang; (3) high polymer piezoelectric material.Those skilled in the art can select dissimilar piezoelectric element according to embody rule occasion.
Again see Fig. 2 and Fig. 3, Fig. 2 and Fig. 3 shows a specific embodiment of heat eliminating medium fluid level control system in evaporative cooling seal chamber, in this specific embodiment, executive component is pilot lamp (also can adopt loudspeaker), the voltage signal produced due to the electric charge that piezoelectric element accumulates is generally very little, be not enough to drive pilot lamp shinny, therefore, controller have employed insulated gate bipolar transistor IGBT, is serially connected in the feed circuit of pilot lamp L (loudspeaker).Insulated gate bipolar transistor IGBT is a kind of full-control type field effect transistor, can use as full-controlled switch, and the voltage signal that the electric charge that piezoelectric element accumulates produces can drive the control pole of IGBT completely.Concrete connected mode is: two pole plates of piezoelectric element P (just, negative plates) be just connected respectively to an electric capacity C1, on negative pole, the control pole G of insulated gate bipolar transistor IGBT is connected to the positive pole of electric capacity C1, source S is connected to the negative pole of the direct supply V in feed circuit, the positive pole of the direct supply V in feed circuit is connected to after drain D indicating lights connected in series L (loudspeaker), the electric signal that piezoelectric element P produces by heat eliminating medium static pressure is converted to voltage signal and forms corresponding control signal by electric capacity C1, insulated gate bipolar transistor IGBT is driven to be switched on or switched off feed circuit, to remind associative operation personnel.If G extremely on have voltage signal, then IGBT conducting, so feed circuit are paths, have electric current flow through and make pilot lamp L shinny; If G extremely goes up no-voltage signal, then IGBT cut-off, so feed circuit disconnect, pilot lamp L extinguishes.
The implementation process of above-mentioned specific embodiment is as follows:
First, before the evaporative cooling medium of liquid state pours into seal stator cavity, set the predetermined filling liquid level position of heat eliminating medium, and other solid support thing fixes a piezoelectric element P on seal stator cavity inner wall above this filling liquid level position or in seal stator cavity, the both sides pole plate of piezoelectric element P is vertically arranged on setting and fills with liquid level place, and the pole plate on piezoelectric element P two relative side is vertical with predetermined liquid level of filling with.
Then, an electric capacity C1 matched is fixed again near this piezoelectric element P, two pole plates of piezoelectric element P (just, negative plates) be just connected respectively to electric capacity C1, on negative pole, when piezoelectric element P accumulates out electric charge because being subject to External Force Acting on two pole plate, this charge Q amount is transmitted on electric capacity C1 through wire, be equivalent to capacitor charging, if the electric capacity of charging capacitor is C, then this electric capacity C1 produces and output voltage U=Q/C, voltage U passes through the path of specific zero-decrement shielded conductor along horizontal machine other extension lines inner again, be drawn out to the outside of explosion-proof motor by the terminal box on explosion-proof housing together with other extension lines, as control signal.Certainly, the electric capacity C1 matched with piezoelectric element P also can be arranged on seal stator containment portion, as long as can meet the basic function of signal transmission.
Liquid evaporative cooling medium is slowly poured into by the valve of seal stator cavity bottom, along with constantly slowly entering of heat eliminating medium, fill with liquid level slowly to raise, in the meantime, piezoelectric element P is uncharged, charge Q amount equals 0, the output voltage U of the electric capacity C1 be attached thereto equals 0, and therefore, insulated gate bipolar transistor IGBT ends, feed circuit disconnect, and pilot lamp L does not work.
Whole stator was not had when entering the evaporative cooling medium liquid in seal stator cavity, when its filling liquid level just arrives at assigned address, now piezoelectric element P is still exposed at outside heat eliminating medium, just its lower end contacts with filling liquid level, two opposite flank is not also subject to the effect of heat eliminating medium hydrostatic pressure, along with heat eliminating medium liquid continues to pour into, fill with liquid level to start to contact piezoelectric element P, now the side of piezoelectric element P starts the hydrostatic pressure F bearing media fluid, so start to occur piezoelectric effect, produce a certain amount of charge Q, this charge Q is charged to electric capacity C1, thus output voltage signal.
During beginning, charge Q amount is very little, voltage signal U is also very little, be not enough to drive IGBT, along with the continuation of filling with liquid level raises, charge Q amount increases gradually, voltage signal U also increases gradually, after evaporative cooling medium liquid did not have piezoelectric element P completely, output voltage U enough drove insulated gate bipolar transistor IGBT, so feed circuit become path from open circuit, pilot lamp L is lit, and operating personnel see shinny then stopping of pilot lamp L and fill with liquid.
Subsequently, the valve that filling liquid personnel begin through seal stator cavity lower bottom part discharges heat eliminating medium liquid, heat eliminating medium liquid level in seal stator cavity starts to decline, when piezoelectric element P starts to expose heat eliminating medium liquid level, its hydrostatic pressure F be subject to starts to reduce, and the charge Q in piezoelectric element P electrode starts to reduce, then output voltage U reduces, if but also have voltage signal, then insulated gate bipolar transistor IGBT remains conducting, and pilot lamp L is still luminance.
When heat eliminating medium is discharged a certain amount of from seal stator cavity, when making its liquid level concordant with the bottom surface of piezoelectric element P (arrive to preset and fill with liquid level position), piezoelectric element P exposes heat eliminating medium completely, no longer be subject to hydrostatic pressure F, i.e. F=0, therefore, charge Q amount on two pole plates of piezoelectric element P also equals 0, output voltage signal U is 0, now insulated gate bipolar transistor IGBT ends because not having voltage drive signals, feed circuit disconnect, pilot lamp L extinguishes, fill with liquid personnel and see that pilot lamp L extinguishes then stopping discharge heat eliminating medium, thus make the liquid level of the heat eliminating medium in seal stator cavity rest on default filling liquid level position, to ensure that stator is immersed in heat eliminating medium completely.
In such scheme, single-chip microcomputer also can be used as controller, and be further advanced by the operation valve be arranged in heat eliminating medium priming line and realize evaporative cooling medium automatic filling.Concrete scheme is: microprocessor detect piezoelectric element output voltage size, and exports corresponding control signal according to output voltage size, opens or close described operation valve.
In addition, what such scheme all adopted is be discarded to the mode concordant with its bottom surface again after heat eliminating medium did not have piezoelectric element, this is because, on the one hand when heat eliminating medium just contacts with the bottom surface of piezoelectric element, although now voltage signal U can be produced, but U is very little, be not enough to drive insulated gate bipolar transistor IGBT; Although certain altitude (1/3rd or half of such as piezoelectric element height that heat eliminating medium liquid level arrives piezoelectric element also can be set, but, this scheme is easily subject to the impact of liquid fluctuating), in a word, after heat eliminating medium did not have piezoelectric element, even if continue perfusion, voltage signal U also no longer changes, the impact of heat eliminating medium liquid fluctuating can be avoided like this, and heat eliminating medium do not have piezoelectric element after voltage signal U also no longer change, be a stable signal, can error be reduced.
In such scheme, insulated gate bipolar transistor IGBT also can adopt the full-control type power devices such as the brilliant lock (GTO) of gate electrode capable of switching off, power transistor (GTR), MOSFET (EFT).
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. heat eliminating medium fluid level control system in evaporative cooling seal chamber, is characterized in that, comprising:
Piezoelectric element, be fixed in evaporative cooling seal chamber, the both sides pole plate of described piezoelectric element is vertically arranged on setting and fills with liquid level place, and the hydrostatic pressure size of described piezoelectric element heat eliminating medium suffered by the pole plate of two on its opposite flank, produce corresponding electric signal;
Controller, whether the end face obtaining heat eliminating medium according to the size of described electric signal arrives the judged result that liquid level is filled with in setting, and exports the control signal driving corresponding executive component according to described judged result;
Described executive component is be arranged on the operation valve in heat eliminating medium priming line, and described operation valve is opened or closed to described control signal.
2. heat eliminating medium fluid level control system in evaporative cooling seal chamber according to claim 1, it is characterized in that, described executive component also comprises pilot lamp or loudspeaker, and described pilot lamp or loudspeaker are opened or closed to described control signal.
3. heat eliminating medium fluid level control system in evaporative cooling seal chamber according to claim 2, it is characterized in that, described controller is insulated gate bipolar transistor, be serially connected in the feed circuit of described pilot lamp or loudspeaker, two pole plates of described piezoelectric element are connected respectively on the positive and negative electrode of an electric capacity, described electric signal is converted to voltage signal and forms described control signal by described electric capacity, drives described insulated gate bipolar transistor to be switched on or switched off described feed circuit.
4. heat eliminating medium fluid level control system in evaporative cooling seal chamber according to claim 3, it is characterized in that, after pilot lamp described in the negative pole that control pole is connected to the positive pole of described electric capacity, source electrode is connected to the direct supply in described feed circuit of described insulated gate bipolar transistor, drain series or loudspeaker, be connected to the positive pole of the direct supply in described feed circuit.
5. heat eliminating medium level control (LC) method in evaporative cooling seal chamber, is characterized in that, comprise the following steps:
Step 10, piezoelectric element is set at evaporative cooling seal chamber internal fixtion, the hydrostatic pressure size of described piezoelectric element heat eliminating medium suffered by the pole plate of two on its opposite flank, produce corresponding electric signal, the both sides pole plate of wherein said piezoelectric element is vertically arranged on setting and fills with liquid level place;
Step 20, obtain the top side location of the heat eliminating medium of current perfusion according to the size of described electric signal, and export corresponding control signal, drive the end face of corresponding executive component controlled cooling model medium and setting to fill with liquid level concordant.
6. heat eliminating medium level control (LC) method in evaporative cooling seal chamber according to claim 5, it is characterized in that, in step 20, first make the top side location of heat eliminating medium exceed the bottom surface certain altitude of described piezoelectric element, and then be down to concordant with the bottom surface of described piezoelectric element.
7. heat eliminating medium level control (LC) method in evaporative cooling seal chamber according to claim 6, is characterized in that, in step 20,
When the top side location of heat eliminating medium exceedes the end face of described piezoelectric element, light pilot lamp or open loudspeaker alert and manually stop perfusion, and manual drain heat eliminating medium;
In the process of discharge heat eliminating medium, when the end face of heat eliminating medium is concordant with the bottom surface of described piezoelectric element, close pilot lamp or loudspeaker and alert manually stops discharge heat eliminating medium.
8. heat eliminating medium level control (LC) method in evaporative cooling seal chamber according to claim 6, is characterized in that, in step 20,
When the top side location of heat eliminating medium exceedes the end face of described piezoelectric element, light pilot lamp or open loudspeaker and stop perfusion by operation valve, starting to discharge heat eliminating medium simultaneously;
In the process of discharge heat eliminating medium, when the end face of heat eliminating medium is concordant with the bottom surface of described piezoelectric element, closes pilot lamp or loudspeaker and stop discharging heat eliminating medium by operation valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210047792.9A CN102594025B (en) | 2012-02-28 | 2012-02-28 | Method and system for controlling liquid level of cooling medium in evaporative cooling sealing cavity |
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| CN201210047792.9A CN102594025B (en) | 2012-02-28 | 2012-02-28 | Method and system for controlling liquid level of cooling medium in evaporative cooling sealing cavity |
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| CN102594025B true CN102594025B (en) | 2015-01-14 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6300693B1 (en) * | 1999-03-05 | 2001-10-09 | Emerson Electric Co. | Electric motor cooling jacket assembly and method of manufacture |
| CN1801583A (en) * | 2004-12-31 | 2006-07-12 | 中国科学院电工研究所 | Evaporating and cooling system monitoring and protection controlling device for generator stator |
| CN201315026Y (en) * | 2008-12-15 | 2009-09-23 | 传力电子衡器(南京)有限公司 | Liquid level controller |
| CN202472442U (en) * | 2012-02-28 | 2012-10-03 | 肖富凯 | Cooling-medium liquid level control system in evaporation-cooling sealing cavity body |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5795151A (en) * | 1980-11-29 | 1982-06-12 | Toshiba Corp | Coolant supplying unit in liquid-cooled, closed type motor |
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2012
- 2012-02-28 CN CN201210047792.9A patent/CN102594025B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6300693B1 (en) * | 1999-03-05 | 2001-10-09 | Emerson Electric Co. | Electric motor cooling jacket assembly and method of manufacture |
| CN1801583A (en) * | 2004-12-31 | 2006-07-12 | 中国科学院电工研究所 | Evaporating and cooling system monitoring and protection controlling device for generator stator |
| CN201315026Y (en) * | 2008-12-15 | 2009-09-23 | 传力电子衡器(南京)有限公司 | Liquid level controller |
| CN202472442U (en) * | 2012-02-28 | 2012-10-03 | 肖富凯 | Cooling-medium liquid level control system in evaporation-cooling sealing cavity body |
Non-Patent Citations (1)
| Title |
|---|
| JP昭57-95151A 1982.06.12 * |
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Effective date of registration: 20231113 Address after: 061108 Zhongjie Industrial Park, Cangzhou City, Hebei Province, from East to Central Europe Road and North to Aviation Avenue Patentee after: MCC Jingcheng Lingang Heavy Equipment Co.,Ltd. Address before: 411200 No.8 Jiangnan Avenue, Jiuhua Industrial Park, Xiangtan City, Hunan Province Patentee before: MCC (XIANGTAN) HEAVY INDUSTRIAL EQUIPMENT Co.,Ltd. |