CN102840706A - Refrigerating device for adjusting temperature of working environment of well measuring instrument - Google Patents
Refrigerating device for adjusting temperature of working environment of well measuring instrument Download PDFInfo
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- CN102840706A CN102840706A CN2012103400647A CN201210340064A CN102840706A CN 102840706 A CN102840706 A CN 102840706A CN 2012103400647 A CN2012103400647 A CN 2012103400647A CN 201210340064 A CN201210340064 A CN 201210340064A CN 102840706 A CN102840706 A CN 102840706A
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Abstract
The invention discloses a refrigerating device for adjusting the temperature of a working environment of a well measuring instrument. The refrigerating device comprises a temperature control circuit, an external housing and an internal housing, wherein the external housing and the internal housing are made from heat conductive materials; the internal housing is placed into a chamber enclosed by the external housing; the well measuring instrument can be placed into a chamber enclosed by the internal housing; a one-way heat conductive layer comprising a semiconductor refrigerating sheet, a heat conductive film and an insulation film is arranged between the internal housing and the external housing; the heat conduction direction is set from the internal housing to the external housing; the temperature in the chamber enclosed by the internal housing is detected through the temperature control circuit, and the supply current of the semiconductor refrigerating sheet can be adjusted based on the set temperature threshold, and the heat conduction capacity of the semiconductor refrigerating sheet is changed. The refrigerating device can be used for storing any non-contact type precise well measuring instrument, and enables the well measuring instrument to run in the range of the working temperature as required, so that the safety of the well measuring instrument in work can be guaranteed, and the detecting precision of the underground physical parameters can be improved.
Description
Technical field
The invention belongs to the deep-well technical field of detection, specifically, relate to a kind of refrigerating plant that is used to regulate the environment temperature of deep-well detection instrument work.
Background technology
Earthquake prospecting, oil and gas exploration, the therapeutic method to keep the adverse qi flowing downward survey and long-term geological mapping technical field, often need carry out heavy duty service, the physical parameter and the chemical parameters of down-hole detected immediately.And at present at special dimensions such as deep-well detections; Provide the instrument that is specifically designed to the deep-well detection actually rare; And these down-hole detection instruments all have strict requirement to operating temperature and operating pressure, and cost an arm and a leg, thus big limitations popularizing of logger.
The logger that why occurs on the market is very rare, traces it to its cause, mainly be summed up as following some: the one, because of the influence of earth geologic structure, in the earth's crust, whenever go deep into 100 meters, temperature just can rise 1-3 ℃.That is to say that well depth is in 7000m, bottom hole temperature (BHT) can rise 70 ℃-210 ℃.And conventional at present detecting element and semiconductor chip, its operating temperature often is lower than 70 ℃, therefore can not satisfy the requirement in shaft bottom work, needs to adopt the special high temperature resistant detecting element or the high temperature semiconductors chip of expensive to provide support.It two is, contains abundant underground water and other fluids in the earth's crust, when well depth reaches certain depth, can overflow a certain amount of moisture inevitably.When the ponding in shaft bottom deposited to a constant volume, the logger that extend in the ponding of down-hole then can bear a part of pressure more, and the working depth of logger is dark more, and is also just high more to the requirement of the anti-pressure ability of instrument and sealing property.
Because the restriction of above condition of work causes the present deep-well parameter that can detect more single, the volume of checkout equipment is too huge and price is also quite expensive.But, often need detect more physical parameter, for example acoustical parameter, magnetic force parameter etc. in the actual well logging environment.The structure of this type of detecting instrument is comparatively complicated; To the requirement of accuracy of detection also than higher; The optics that uses in the system and the service condition of semiconductor devices are relatively harsher, can't in the environment of down-hole below 3000 meters, use with present semiconductor technology and logging technique.
Therefore, how efficiently and fast regulating the residing environment temperature of down-hole detection instrument, is the key subject that present deep-well technical field of detection is being inquired into.
Summary of the invention
The object of the present invention is to provide a kind of refrigerating plant that is used to regulate the environment temperature of logger work, with guarantee logger can be in the shaft bottom operate as normal, realize accurate detection to some down-hole physical parameter.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme to be achieved:
A kind of refrigerating plant that is used to regulate the environment temperature of logger work comprises temperature control circuit and external shell and the inner shell processed by Heat Conduction Material; Said inner shell is positioned at the chamber that external shell surrounds; The chamber that said inner shell surrounded is used to place logger; Between said inner shell and external shell, be provided with the one-way heat conduction layer of being made up of semiconductor chilling plate, heat conducting film and thermal isolation film, the heat conduction direction conducts to external shell by inner shell; Said temperature control circuit detects temperature in the chamber that inner shell surrounded, and regulates the supply current of semiconductor chilling plate according to the temperature threshold of setting, and changes the heat conduction amount of semiconductor chilling plate.
Further, in said temperature control circuit, comprise temperature sensor, processor and on-off circuit; Said temperature sensor places in the chamber that inner shell surrounds or is arranged on the outer wall of inner shell, detects temperature in the chamber that inner shell surrounded, and converts the signal of telecommunication to and export processor to; Said processor exports on-off circuit to according to the temperature threshold generation control signal of the signal of telecommunication that receives and setting, through the current supply circuit break-make of gauge tap connecting and disconnecting of the circuit with the control semiconductor chilling plate.
Preferably; Said on-off circuit is a solid-state relay, its input control end connection processing device, the control signal of receiving processor output; The output-controlled end of solid-state relay is connected between ac-dc switching power and the semiconductor chilling plate, and the current supply circuit of semiconductor chilling plate is perhaps cut off in conducting.
Further, said ac-dc switching power stube cable, said cable passes the AC power on the external shell connection well.
Preferably, said external shell is preferably designed to the steel metal shell of cylindrical or rugby shape, touches the borehole wall when avoiding down well operations; The position that on said external shell, passes cable is provided with sealing ring, and the chamber that external shell is surrounded is closed state, the inside that enters into refrigerating plant with the ponding of avoiding the shaft bottom or heat.
As the laying mode of said one-way heat conduction layer, preferably adopt following two kinds of designs:
The first is put said one-way heat conduction layer around the side wall ring winding of inner shell.
It two is, with said one-way heat conduction layer around sidewall, roof and the diapire of inner shell around setting, inner shell is wrapped in wherein.
Preferably, said temperature control circuit is preferably placed at said one-way heat conduction layer and centers in the zone that forms, the heat that is sent when utilizing semiconductor chilling plate that temperature control circuit the is worked cooling processing of dispelling the heat in the lump.
In order to improve the heat-sinking capability of refrigerating plant; Satisfy the job requirement of logger under different well depths; Said one-way heat conduction layer preferably adopt the multi-lager semiconductor cooling piece, at least one deck heat conducting film and at least one deck thermal isolation film form; And have at least the inwall of one deck thermal isolation film and external shell to fit, with the inside of heat reverse conduction to the refrigerating plant that prevents the down-hole hot environment.
Further, the number of plies n of said semiconductor chilling plate >=(T2-T1)/and dT, n rounds numerical value; Wherein, T1 is the maximum operating temperature of logger, and T2 is the downhole environment temperature, and dT is the maximum temperature difference of semiconductor chilling plate.
Compared with prior art; Advantage of the present invention and good effect are: refrigerating plant of the present invention can any contactless accurate logger of splendid attire; And such logger can be operated in the desired operating temperature range of instrument, to guarantee the security of logger work.In addition, this refrigerating plant is simple in structure, and volume is little; With low cost; Device itself does not have the machinery vibration, need not mechanical noise is compensated for accurate loggers such as high-precision acoustic sounding appearance or magnetic survey appearance, has improved the accuracy of detection and the reliability of such logger virtually.
Description of drawings
Fig. 1 is the internal structure sketch map of a kind of embodiment of the refrigerating plant of proposed by the invention the being used to environment temperature of regulating logger work;
Fig. 2 is the horizontal section vertical view of Fig. 1;
Fig. 3 is the schematic block circuit diagram of a kind of embodiment of temperature control circuit;
Fig. 4 is the internal structure sketch map of other a kind of embodiment of the refrigerating plant of proposed by the invention the being used to environment temperature of regulating logger work;
Fig. 5 is the internal structure sketch map of the third embodiment of the refrigerating plant of proposed by the invention the being used to environment temperature of regulating logger work.
The specific embodiment
Below in conjunction with accompanying drawing the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making all other embodiment that obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
For the advantage that makes technical scheme of the present invention is clearer, the present invention is done explanation at length below in conjunction with accompanying drawing and embodiment.
Embodiment one, referring to shown in Figure 1, the refrigerating plant of present embodiment mainly by external shell 1, inner shell 2, temperature control circuit and be arranged on external shell 1 and inner shell 2 between the one-way heat conduction layer constitute.Wherein, inner shell 2 is arranged in the chamber that external shell 1 surrounded, and the chamber A that inner shell 2 is surrounded is used to hold logger.In order to make the heat in the chamber A promptly outwards to discharge, described external shell 1 all adopts Heat Conduction Material to process with inner shell 2, preferably adopts the material preparation of heat conductivility good metal.Wherein, inner shell 2 can be selected any metal material preparation for use, when guaranteeing the good heat conductive performance, plays the effect of protection logger.For external shell 1, preferably adopt the antirust steel material of resistance to compression to process, when playing mechanical support, can better adapt to the abominable working environment of shaft bottom high pressure, high humidity.
Said one-way heat conduction layer preferably adopts semiconductor chilling plate 3, heat conducting film 4 and thermal isolation film 5 to be put together, and the heat conduction direction conducts to external shell 1 by inner shell 2, referring to the partial enlarged drawing among Fig. 1 and shown in Figure 2.In said one-way heat conduction layer, semiconductor chilling plate 3 plays the effect of heat pump, and its cold junction is towards inner shell 2; The hot junction is towards external shell 1; After semiconductor chilling plate 3 energisings, absorb the heat that inner shell 2 distributes through cold junction, to reduce the temperature in the chamber A; The heat that absorbs through cold junction is conducted to the hot junction of semiconductor chilling plate 3, and then discharges to the external world through the external shell 1 of steel.
At present, conventional semiconductor chilling plate, the temperature difference at its two ends is generally at 30-65 ℃.Because the difference of well depth; Can there be very big difference in the temperature in shaft bottom; In order to satisfy the job requirement of logger in the different depth down-hole; Need according in each deep-well that will survey, the downhole environment temperature T 2 that temperature is the highest and the maximum operating temperature T1 of logger confirm the laying number of plies of semiconductor chilling plate 3.Specifically, can utilize formula n >=(T2-T1)/dT to calculate the number of plies of semiconductor chilling plate 3 required layings.Wherein, n is the number of plies of semiconductor chilling plate 3, rounds numerical value; DT is the maximum temperature difference of semiconductor chilling plate 3.
In said one-way heat conduction layer, heat conducting film 4 can be laid one deck or multilayer, plays the reverse heat insulation effect of heat forward conduction.When heat conducting film 4 is provided with multilayer, preferably between adjacent two-layer semiconductor chilling plate 3, lay one deck heat conducting film 4, the hot junction heat of internal layer semiconductor chilling plate is conducted in time the cold junction of outer semiconductor chilling plate, to accelerate radiating rate.Same, said thermal isolation film 5 also can be laid one deck or multilayer, plays radiation heat insulation, prevents that external heat is radiated the inner effect of refrigerating plant.In order to improve effect of heat insulation, fit on the inwall of external shell 1 to major general's one deck thermal isolation film 5, invade with the radiation of stopping external heat.
As the laying mode of said one-way heat conduction layer, can said one-way heat conduction layer be put around the side wall ring winding of inner shell 2, as shown in Figure 1; Also can be with said one-way heat conduction layer around sidewall, roof and the diapire of inner shell 2 around setting, inner shell 2 is wrapped in wherein fully, like Fig. 4, shown in Figure 5, through increasing endotherm area, to accelerate the conduction and the rate of release of heat.
For said temperature control circuit; Can form by critical pieces such as temperature sensor, processor and on-off circuits; Referring to shown in Figure 3; Be built in the chamber that external shell 1 surrounded, wherein temperature sensor 6 preferably is built among the chamber A that inner shell 2 surrounded, and is used for that the temperature in the chamber A (being the operating temperature of logger) is carried out timing and detects.Certainly, said temperature sensor 6 also can be arranged on the outer wall of inner shell 2, knows the internal temperature of chamber A through the outside wall temperature that detects inner shell 2.Because inner shell 2 processed by the good material of heat conductivility, so the outside wall temperature of inner shell 2 also can well reflect the internal temperature of chamber A, satisfies measurement requirement.Said temperature sensor 6 is according to detected temperature height; Generate the corresponding with it signal of telecommunication (current signal or voltage signal) and export processor to; Preferably transfer to the ADC interface of processor, convert analog electrical signal to data signal, the corresponding temperature value that generates in the chamber A.Processor compares said temperature value and the temperature threshold that writes in advance; And then the generation control signal exports on-off circuit to; Come conducting perhaps to turn-off the current supply circuit of semiconductor chilling plate through the gauge tap connecting and disconnecting of the circuit, the adjusting of the supply current size in the semiconductor chilling plate is crossed in the realization convection current.Said semiconductor chilling plate is regulated its heat conduction amount according to the size of the supply current that its inside is flow through; So that the temperature in the chamber A can remain in the desired normal working temperature scope of logger, the working environment of a safety is provided for logger.
As a kind of preferred design of present embodiment, said on-off circuit preferably adopts a solid-state relay to carry out system's design of temperature control circuit, and is as shown in Figure 3.With the input control end connection processing device of said solid-state relay, the control signal of receiving processor output is with two the output-controlled end conductings or the shutoff of control solid-state relay.Two output-controlled ends of said solid-state relay are connected between ac-dc switching power and the semiconductor chilling plate, with the current supply circuit break-make of control semiconductor chilling plate.
For the required power supply of temperature control circuit work, preferably adopt aboveground AC power to supply with.Specifically; Can aboveground AC power be transferred to described ac-dc switching power through cable 7; Convert AC power to processor, temperature sensor and semiconductor chilling plate required dc supply through DC/AC power supply source, be each direct current electricity consumption electric.In order to realize being connected of cable 7 and ac-dc switching power, said cable 7 is penetrated the AC side that external shell 1 (preferably penetrating the roof of external shell 1) is connected to ac-dc switching power, for ac-dc switching power provides Alternating Current Power Supply.
Because temperature control circuit also can discharge certain heat when work; For the heat that temperature control circuit is produced also can be dispersed into the external world in time; Preferably with said temperature control circuit be arranged on the one-way heat conduction layer around in the zone that forms; Utilize the heat pump effect of semiconductor chilling plate 3, in the temperature, the heat that temperature control circuit is produced distributes in the lump in the chamber A that release inner shell 2 is surrounded.
Certainly, said temperature control circuit also can be arranged on the one-way heat conduction layer around the region exterior that forms, and only temperature sensor 6 is extend in the chamber A that inner shell 2 surrounded, like Fig. 1, shown in Figure 4; Perhaps further with processor 9 be built in the one-way heat conduction layer around in the zone that forms; And ac-dc switching power 10 and solid-state relay are arranged on the region exterior of one-way heat conduction layer institute around formation; As shown in Figure 5, can satisfy the designing requirement of whole refrigerating plant equally.
At the inner concrete installation position of refrigerating plant, present embodiment is not limited in above giving an example to temperature control circuit.
Ponding for fear of the shaft bottom enters into refrigerating plant inside; And play the purpose of resisting external high pressure; The position that externally passes cable 7 on the housing 1 also is provided with sealing ring 8; Cable 7, sealing ring 8 and external shell 1 form enclosed construction, make the internal cavity of refrigerating plant be sealing state, for the internal components and the logger of refrigerating plant provides dry, safe working environment.
Logger picks and places for ease; The structure that preferably diapire of the diapire of external shell 1 and inner shell 2 is designed to be able to open; After opening the diapire of external shell 1 and inner shell 2; Logger is placed among the cavity A that inner shell 2 surrounded, closes the diapire of inner shell 2 and the diapire of external shell 1 then successively, make refrigerating plant be closed state.
When descending well operations, touch the borehole wall for fear of refrigerating plant; Cause the damage of refrigerating plant; Present embodiment preferably is designed to cylindrical (as shown in Figure 2) or rugby shape with the external shell 1 of said refrigerating plant; Through being designed to slick and sly profile, to reduce the probability that refrigerating plant touches the borehole wall.
The refrigerating plant of present embodiment is simple in structure; Be fit to place various contactless accurate loggers such as sonic detector, magnetic survey appearance; And installation process is simple and convenient, be particularly suitable for being applied in earthquake prospecting, oil and gas exploration, the therapeutic method to keep the adverse qi flowing downward survey and the down-hole detection process of long-term geological mapping in.
Certainly; Above-mentioned explanation is not to be limitation of the present invention; The present invention also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present invention also should belong to protection scope of the present invention.
Claims (10)
1. a refrigerating plant that is used to regulate the environment temperature of logger work is characterized in that: comprise temperature control circuit and external shell and the inner shell processed by Heat Conduction Material; Said inner shell is positioned at the chamber that external shell surrounds; The chamber that said inner shell surrounded is used to place logger; Between said inner shell and external shell, be provided with the one-way heat conduction layer of being made up of semiconductor chilling plate, heat conducting film and thermal isolation film, the heat conduction direction conducts to external shell by inner shell; Said temperature control circuit detects temperature in the chamber that inner shell surrounded, and regulates the supply current of semiconductor chilling plate according to the temperature threshold of setting, and changes the heat conduction amount of semiconductor chilling plate.
2. the refrigerating plant that is used to regulate the environment temperature of logger work according to claim 1 is characterized in that: in said temperature control circuit, comprise temperature sensor, processor and on-off circuit; Said temperature sensor places in the chamber that inner shell surrounds or is arranged on the outer wall of inner shell, detects temperature in the chamber that inner shell surrounded, and converts the signal of telecommunication to and export processor to; Said processor exports on-off circuit to according to the temperature threshold generation control signal of the signal of telecommunication that receives and setting, through the current supply circuit break-make of gauge tap connecting and disconnecting of the circuit with the control semiconductor chilling plate.
3. the refrigerating plant that is used to regulate the environment temperature of logger work according to claim 2; It is characterized in that: said on-off circuit is a solid-state relay; Its input control end connection processing device; The control signal of receiving processor output, the output-controlled end of solid-state relay is connected between ac-dc switching power and the semiconductor chilling plate, and the current supply circuit of semiconductor chilling plate is perhaps cut off in conducting.
4. the refrigerating plant that is used to regulate the environment temperature of logger work according to claim 3, it is characterized in that: said ac-dc switching power stube cable, said cable passes the AC power on the external shell connection well.
5. the refrigerating plant that is used to regulate the environment temperature of logger work according to claim 4, it is characterized in that: said external shell is the steel metal shell of cylindrical or rugby shape; The position that on said external shell, passes cable is provided with sealing ring, and the chamber that external shell is surrounded is closed state.
6. according to each described refrigerating plant that is used to regulate the environment temperature of logger work in the claim 1 to 5, it is characterized in that: said one-way heat conduction layer is put around the side wall ring winding of inner shell.
7. according to each described refrigerating plant that is used to regulate the environment temperature of logger work in the claim 1 to 5; It is characterized in that: said one-way heat conduction layer centers on sidewall, roof and the diapire of inner shell around setting, and inner shell is wrapped in wherein.
8. the refrigerating plant that is used to regulate the environment temperature of logger work according to claim 7 is characterized in that: said temperature control circuit is positioned at said one-way heat conduction layer and centers on the zone that forms.
9. according to each described refrigerating plant that is used to regulate the environment temperature of logger work in the claim 1 to 5; It is characterized in that: said one-way heat conduction layer by the multi-lager semiconductor cooling piece, at least one deck heat conducting film and at least one deck thermal isolation film form, and have at least the inwall of one deck thermal isolation film and external shell to fit.
10. the refrigerating plant that is used to regulate the environment temperature of logger work according to claim 9 is characterized in that: the number of plies n of said semiconductor chilling plate >=(T2-T1)/and dT, n rounds numerical value; Wherein, T1 is the maximum operating temperature of logger, and T2 is the downhole environment temperature, and dT is the maximum temperature difference of semiconductor chilling plate.
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| CN2012103400647A CN102840706A (en) | 2012-09-14 | 2012-09-14 | Refrigerating device for adjusting temperature of working environment of well measuring instrument |
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| CN2012103400647A CN102840706A (en) | 2012-09-14 | 2012-09-14 | Refrigerating device for adjusting temperature of working environment of well measuring instrument |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104571197A (en) * | 2013-10-29 | 2015-04-29 | 杨泰和 | Temperature control system having adjacently-installed temperature equalizer and heat transfer fluid and application device thereof |
| CN105979724A (en) * | 2016-06-18 | 2016-09-28 | 苏州英哲铁路机车配件有限公司 | Portable interference directional analyzer |
| CN107178930A (en) * | 2017-05-24 | 2017-09-19 | 彭波涛 | A kind of active downhole gauges heat management system and method |
| CN107178929A (en) * | 2017-05-18 | 2017-09-19 | 西安交通大学 | A kind of underground semiconductor refrigerating heat pump assembly |
| CN110087439A (en) * | 2019-04-28 | 2019-08-02 | 中国石油集团渤海钻探工程有限公司 | Downhole instrument electronic cooling cooling system |
| CN111305815A (en) * | 2020-02-24 | 2020-06-19 | 中国海洋石油集团有限公司 | Cable logging instrument and refrigeration method thereof |
| CN112271345A (en) * | 2020-09-21 | 2021-01-26 | 中国石油天然气集团有限公司 | Logging instrument charging power supply with heat dissipation system and working method thereof |
| CN113790036A (en) * | 2021-08-12 | 2021-12-14 | 深圳大学 | A heat preservation cabin structure and heat preservation coring device for saving combustible ice |
| CN113853100A (en) * | 2021-09-13 | 2021-12-28 | 吉林大学 | Heat management system of deep well long-term continuity detection electronic instrument |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111305815A (en) * | 2020-02-24 | 2020-06-19 | 中国海洋石油集团有限公司 | Cable logging instrument and refrigeration method thereof |
| CN111305815B (en) * | 2020-02-24 | 2022-12-06 | 中国海洋石油集团有限公司 | Cable logging instrument and refrigeration method thereof |
| CN112271345A (en) * | 2020-09-21 | 2021-01-26 | 中国石油天然气集团有限公司 | Logging instrument charging power supply with heat dissipation system and working method thereof |
| CN112271345B (en) * | 2020-09-21 | 2022-03-01 | 中国石油天然气集团有限公司 | Logging instrument charging power supply with heat dissipation system and working method thereof |
| CN113790036A (en) * | 2021-08-12 | 2021-12-14 | 深圳大学 | A heat preservation cabin structure and heat preservation coring device for saving combustible ice |
| CN113853100A (en) * | 2021-09-13 | 2021-12-28 | 吉林大学 | Heat management system of deep well long-term continuity detection electronic instrument |
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Application publication date: 20121226 |