CN105823272A - Refrigerating device for downhole instruments - Google Patents

Refrigerating device for downhole instruments Download PDF

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Publication number
CN105823272A
CN105823272A CN201610149432.8A CN201610149432A CN105823272A CN 105823272 A CN105823272 A CN 105823272A CN 201610149432 A CN201610149432 A CN 201610149432A CN 105823272 A CN105823272 A CN 105823272A
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heat
vaporizer
fluid passage
metal
internal
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CN201610149432.8A
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CN105823272B (en
Inventor
王少斌
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Xi'an Zhenyu Electronic Engineering Co Ltd
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00Evaporators; Condensers
    • F25B39/02Evaporators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00Evaporators; Condensers
    • F25B39/04Condensers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00Fluid-circulation arrangements

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention provides a refrigerating system for downhole instruments for oil exploration. According to the refrigerating system, a closed system is composed of an upper connector, a metal heat conduction pressure bearing connector and a sealing shell; and a refrigerating system body composed of an electric motor, a pressure pump, a condenser, an intercepting pipe and an evaporator is placed in the closed system. The evaporator is arranged in a vacuum flask. A circuit board is placed on the evaporator. The internal temperature of the vacuum flask is reduced through the evaporator, so that the internal temperature of the vacuum flask is greatly lower than the temperature of external high-temperature high-pressure mud. A heat absorbent is placed in the vacuum flask. Once the refrigerating system breaks down, the internal heat absorbent absorbs heat in the vacuum flask, and the vacuum flask and heat insulation asbestos isolate the heat conducted by the exterior of the sealing shell. Accordingly, it is guaranteed that the internal temperature of the vacuum flask is maintained within a reasonable temperature range for a certain time period, and the internal temperature of the vacuum flask can be monitored through an internal temperature sensor in real time.

Description

A kind of refrigerating plant for downhole instrument
Technical field
The present invention relates to a kind of refrigerating plant for oil exploration downhole instrument, particularly relate to the refrigerating plant of a kind of internal measurement circuit operating temperature for reducing the downhole instrument explored for oil.
Background technology
During oil development, need to use various measuring instrument, measure the fluid within stratum and the various physical parameters of rock, accurately determine oil reservoir position, convenient exploitation oil.But in the measuring instrument of deep-well, down-hole to be stood hot environment, it is to be ensured that instrument internal measuring circuit normally works.
At present, various device for subsurface measuring occurs on market, working properly in order to ensure internal measuring circuit, generally use two ways: a kind of mode is to be placed on inside metal vacuum bottle by measuring circuit and heat absorbent, along with thermos flask internal temperature raises, heat absorbent gasifies, thus absorb heat, reduce the various temperature of inside, but this mode was limited by the working time, once exceeding certain time heat absorbent all to have gasified, thermos flask internal temperature the most no longer reduces, and the temperature within thermos flask that extends the most over time rises.Another way uses high-temperature electronic element manufacturing circuit exactly, is directly exposed in hot environment, inapplicable thermos flask and heat absorbent, but this mode cost is the highest, and some electronic device can not be high temperature resistant, limits the application of measuring instrument function.
Therefore, those skilled in the art urgently develop a kind of refrigerating plant that the various measuring instrument worked in hot environment in down-hole can be helped to drop to suitable temperature.
Summary of the invention
The present invention, in order to overcome the shortcoming of prior art, proposes one and a set of small refrigeration systems is placed on instrument internal, carry out the temperature of lowering apparatus internal measurement circuit, do not limited by the working time, and cost is relatively low.
To achieve these goals, present invention employs following structure: a kind of refrigerating plant for downhole instrument, it includes sealing shell, the inner chamber sealing shell is provided with metal vacuum bottle, and wherein, the head of described metal vacuum bottle is tightly connected with metal heat-conducting pressure bearing head, metal vacuum bottle be internally provided with vaporizer, vaporizer be internally provided with fluid passage, cold-producing medium gasifies and along fluid path owing to temperature raises inside fluid passage, and refrigerant vapor absorbs heat;Heat insulation asbestos are positioned at metal heat-conducting pressure bearing head end, thus are isolated with metal vacuum bottle extraneous air by metal vacuum bottle inner air.
Further, the chamber of described metal heat-conducting pressure bearing head is additionally provided with metal fixed disk, metal fixed disk is kept apart by described heat insulation asbestos with vaporizer, it is fixed with compression pump on metal fixed disk, compression pump is connected to dc motor, and condenser employing helical structure is to expand area of dissipation, and is sheathed on outside compression pump and dc motor, condenser directly contacts with metal heat-conducting pressure bearing head surface of internal cavity, it is simple to conduct heat to external high temperature high-pressure slurry.
Further, the entrance of the fluid passage within vaporizer through heat insulation asbestos and is connected to condensator outlet by described intercepting sewer;Connecting tube passes heat insulation asbestos and the outlet of the fluid passage within vaporizer is connected to the porch of compression pump, and pressure delivery side of pump is connected to the entrance of condenser.
Further, cold-producing medium enters fluid passage by intercepting sewer from condenser, and gasifies and along fluid path owing to temperature raises inside fluid passage;Elongated hole it is machined with, to realize choked flow effect, it is to avoid the cold-producing medium in condenser cools to ideal temperature the most completely and enters into fluid passage with regard to too fast inside intercepting sewer.
Further, described vaporizer have employed I-shaped structure, and its upper and lower surface is placed with circuit board.
Further, described sealing shell is tightly connected with described metal heat-conducting pressure bearing head;Described metal heat-conducting pressure bearing head is sealedly connected with top connection, and top connection is connected with electrical connector, and electrical connector is powered at dc motor respectively by wire and circuit board works.
Further, the head of described metal vacuum bottle is screwed with metal heat-conducting pressure bearing head and is connected.
Further, the bottom within described metal vacuum bottle is further provided with the heat absorbent for auxiliary temperature-reducing, and heat absorbent is connected by screw the bottom in vaporizer.
Further, present invention additionally comprises the refrigerating method that refrigerating plant a kind of and of the present invention is relevant, wherein, circuit board works long hours, and generate heat, connected vaporizer absorbs heat, so that the refrigerant vapor within vaporizer, cold-producing medium after gasification is under the effect of compression pump, along the fluid passage one way flow within vaporizer, and enter compression pump by connecting tube, then enter back in condenser, cold-producing medium after gasification liquefies under the effect of condenser, and it is re-introduced into the fluid passage within vaporizer by intercepting sewer, and then enter next process of refrigerastion.
Further, if after refrigeration system breaks down, vaporizer starts to warm up under the long-term work of circuit board, is arranged at the heat absorbent heat absorption below vaporizer, it is achieved thereby that keep the temperature within metal vacuum bottle within a period of time.
Have employed the refrigerating plant of said structure, its structure simplifies, stable, reliable, is possible not only to realize the effect of refrigeration, can also realize persistently freezing simultaneously, but also overcome the defect that refrigeration modes in prior art is restricted to time.
Accompanying drawing explanation
Fig. 1 is the longitudinal sectional view of refrigerating plant of the present invention;
Fig. 2 is that refrigerating plant of the present invention is along another longitudinal sectional view obtained by F-F direction cutting in Fig. 1;
Fig. 3 is that refrigerating plant of the present invention is along cross section view obtained by G-G direction cutting in Fig. 2.
Fig. 4 illustrates refrigerating plant of the present invention about intercepting sewer 8, connecting tube 9, condenser inlet, condensator outlet and high pressure pump inlet, the annexation of high pressure pump outlet.
Detailed description of the invention
In order to better illustrate structure and the operation principle of the present invention, below in conjunction with the accompanying drawings a kind of detailed description of the invention of the present invention is described in detail.
As depicted in figs. 1 and 2, refrigerating plant of the present invention includes top connection 2, metal heat-conducting pressure bearing head 3 and seals shell 12, described top connection 2, metal heat-conducting pressure bearing head 3 and sealing shell 12 are tightly connected one closed system with inner chamber of composition successively, preferably, described sealing shell 12 is provided with sealing ring with the junction of metal heat-conducting pressure bearing head, and described metal heat-conducting pressure bearing head 3 is provided with sealing ring with the junction of top connection 2.
In order to the structure of the more simple and clear explanation present invention, according to the above-below direction shown in Fig. 1 and Fig. 2, refrigerating plant of the present invention will be made description below, be not used as limiting the present invention it should be understood by those skilled in the art that directionality describes.
As depicted in figs. 1 and 2, the inner chamber of described sealing shell 12 is provided with metal vacuum bottle 11, and the head of described metal vacuum bottle 11 is screwed with metal heat-conducting pressure bearing head 3 and is connected.The end being connected with metal vacuum bottle 11 of metal heat-conducting pressure bearing head 3 is provided with heat insulation asbestos 17, and sealing system is divided into thermos flask internal and outside thermos flask by these heat insulation asbestos 17;The heat that metal vacuum bottle 11 and heat insulation asbestos 17 isolating seal housing exterior pass to, thus reduce the temperature within thermos flask, and then guarantee that thermos flask internal temperature maintains within the scope of reasonable temperature.
Described metal vacuum bottle 11 is internally provided with vaporizer 10, vaporizer 10 be internally provided with fluid passage 26, cold-producing medium 19 is internal in fluid passage 26 to gasify due to temperature rising and flows (in the present embodiment according to certain orientation, cold-producing medium 19 after gasification under the effect of compression pump 7 along fluid passage 26 clockwise flow), cold-producing medium 19 gasification absorbs heat, thus reduces the temperature within thermos flask.Described heat insulation asbestos 17 are between vaporizer 10 and metal fixed disk 25, thus vaporizer 10 and metal fixed disk 25 isolated, and then isolated with thermos flask inner air 18 by thermos flask extraneous air 24.In the present embodiment, the port of export of intercepting sewer 8 is connected to the entrance of the fluid passage 26 of vaporizer 10, and the arrival end of connecting tube 9 is connected to the outlet of the fluid passage 26 of vaporizer 10;The intracavity of described metal heat-conducting pressure bearing head 3 is additionally provided with compression pump 7, compression pump 7 is fixed on metal fixed disk 25, and compression pump 7 is provided above dc motor 6, condenser 5 uses helical structure to expand area of dissipation, it is sheathed on outside compression pump 7 and dc motor 6, and condenser 5 directly contacts with metal heat-conducting pressure bearing head 3 surface of internal cavity, thus conduct heat to external high temperature high-pressure slurry 20, be conducive to heat radiation;As shown in Figure 1 and Figure 4, the port of export of described connecting tube 9 is connected to the entrance 34 of compression pump 7 through heat insulation asbestos 17, and the outlet 31 of compression pump 7 is connected to condenser inlet 32 by internal pipeline, and condensator outlet 33 is connected to the arrival end of intercepting sewer 8.
As it is shown on figure 3, vaporizer 10 uses exceptionally heat-conductive material, in the present embodiment, vaporizer have employed I-shaped structure, and its upper and lower surface is placed with circuit board 14.
From Fig. 1 and Fig. 2, dc motor 6, compression pump 7, condenser 5, intercepting sewer 8, connecting tube 9 and metal fixed disk 25 are in the intracavity of metal heat-conducting pressure bearing head 3, and dc motor 6 is axially connected with compression pump 7, compression pump 7 is threadably mounted on fixed disk 25 by sealing.When top connection 2 is connected with electrical connector 1, the wire 4 coming from electrical connector 1 is connected to dc motor through top connection inner chamber, power is provided to dc motor 6, dc motor 6 drives compression pump 7 to work, and then achieve the cold-producing medium after gasification 19 and flow along a direction along the fluid passage 26 of vaporizer 10, flowing preferably clockwise, and then enter in compression pump 7 by connecting tube 9, subsequently in condenser 5, cold-producing medium 17 after gasification liquefies as liquid refrigerant under the effect of condenser 5, and entered in the vaporizer 10 in thermos flask 11 by intercepting sewer 8 and is again freezed in thermos flask inside.
During petroleum exploration survey, circuit board 14 is connected with electrical connector by wire, circuit board heats up owing to working long hours, so that the cold-producing medium 19 within vaporizer 10 gasifies, thus reduce the surface temperature of vaporizer 10, and then reduce the temperature within metal vacuum bottle 11, also and then reduce the temperature of circuit board 14, it is achieved thereby that the continuable work of circuit board 14.
Further, the bottom of the inside of described metal vacuum bottle 11 is also provided with heat absorbent 13, heat absorbent 13 is connected to the bottom of vaporizer 10 by screw 27, thus, once refrigeration system breaks down, internal heat absorbent absorbs by heat and the heat of vaporizer sealing housing exterior conduction, so that it is guaranteed that within the scope of thermos flask internal temperature maintains reasonable temperature within a certain period of time.
Further, the entrance of the fluid passage 26 within vaporizer 10 through heat insulation asbestos 17 and is connected to condensator outlet 33 by intercepting sewer 8, described intercepting sewer 8 is internal is machined with elongated hole 28, achieve choked flow effect, owing to the circulation area of fluid passage 26 is far longer than the circulation area of intercepting sewer 8, so the cold-producing medium avoided in condenser is not cooling to the most just enter into the phenomenon of the fluid passage 26 of vaporizer, thus improve the effect of refrigeration.
The above is only a kind of preferred implementation of the refrigerating plant for downhole instrument of the present invention; it should be pointed out that, for those skilled in the relevant art, under the premise without departing from the principles of the invention; the trickle modification made and improvement, also should be regarded as belonging to protection scope of the present invention.

Claims (10)

1. the refrigerating plant for downhole instrument, it includes sealing shell (12), the inner chamber sealing shell (12) is provided with metal vacuum bottle (11), it is characterized in that, the head of described metal vacuum bottle (11) is tightly connected with metal heat-conducting pressure bearing head (3), metal vacuum bottle (11) be internally provided with vaporizer (10), vaporizer (10) be internally provided with fluid passage (26), cold-producing medium (19) gasifies owing to temperature raises in fluid passage (26) inside and flows along fluid passage (26), cold-producing medium (19) gasification absorbs heat;Heat insulation asbestos (17) are positioned at metal heat-conducting pressure bearing head (3) end, thus are isolated with metal vacuum bottle extraneous air (24) by metal vacuum bottle inner air (18).
2. refrigerating plant as claimed in claim 1, wherein, the chamber of described metal heat-conducting pressure bearing head 3 is additionally provided with metal fixed disk (25), metal fixed disk (25) is kept apart by described heat insulation asbestos (17) with vaporizer (10), compression pump (7) it is fixed with on metal fixed disk (25), compression pump (7) is connected to dc motor (6), condenser (5) uses helical structure to expand area of dissipation, and it is sheathed on compression pump (7) and dc motor (6) outside, condenser (5) directly contacts with metal heat-conducting pressure bearing head (3) surface of internal cavity, it is easy to conduct heat to external high temperature high-pressure slurry (20).
3. refrigerating plant as claimed in claim 2, wherein, the intercepting sewer (8) entrance through heat insulation asbestos (17) and by fluid passage (26) internal for vaporizer (10) is connected to condensator outlet (33);The connecting tube (9) outlet through heat insulation asbestos (17) and by fluid passage (26) internal for vaporizer (10) is connected to the porch of compression pump (7), and the outlet of compression pump (7) is connected to the entrance (32) of condenser (5).
4. refrigerating plant as claimed in claim 2, wherein, cold-producing medium (19) enters fluid passage (26) by intercepting sewer (8) from condenser (5), and gasifies owing to temperature raises in fluid passage (26) inside and flow along fluid passage (26);Intercepting sewer (8) is internal is machined with elongated hole (28), to realize choked flow effect, it is to avoid the cold-producing medium in condenser (5) cools to ideal temperature the most completely and enters into fluid passage with regard to too fast.
5. the refrigerating plant as shown in claim 2, wherein, described vaporizer (10) have employed I-shaped structure, and its upper and lower surface is placed with circuit board (14).
6. refrigerating plant as claimed in claim 5, wherein, described sealing shell (12) is tightly connected with described metal heat-conducting pressure bearing head (3);Described metal heat-conducting pressure bearing head (3) is sealedly connected with top connection (2), top connection (2) is connected with electrical connector (1), and electrical connector (1) is powered at dc motor (6) respectively by wire and circuit board (14) works.
7. refrigerating plant as claimed in claim 6, wherein, the head of described metal vacuum bottle (11) is screwed with metal heat-conducting pressure bearing head (3) and is connected.
8. refrigerating plant as claimed in claim 1, wherein, the bottom of described metal vacuum bottle (11) inside is further provided with the heat absorbent (13) for auxiliary temperature-reducing, heat absorbent (13) is connected to the bottom of vaporizer (10) by screw (27), is integrally placed to metal vacuum bottle 11 internal.
9. the refrigerating method of the refrigerating plant of a downhole instrument, wherein, circuit board (14) works long hours, and generate heat, connected vaporizer (10) absorbs heat, so that cold-producing medium (19) gasification that vaporizer (10) is internal, cold-producing medium after gasification is under the effect of compression pump (7), along fluid passage (26) one way flow that vaporizer (10) is internal, and enter compression pump (7) by connecting tube (9), then enter back in condenser (5), cold-producing medium after gasification liquefies under the effect of condenser (5), and it is re-introduced into, by intercepting sewer (8), the fluid passage that vaporizer (10) is internal, and then enter next process of refrigerastion.
10. the refrigerating method of refrigerating plant as claimed in claim 9, wherein, if after refrigeration system breaks down, vaporizer (10) starts to warm up under the long-term work of circuit board (14), it is arranged at heat absorbent (13) heat absorption of vaporizer (10) lower section, it is achieved thereby that keep the temperature of metal vacuum bottle (11) inside within a period of time.
CN201610149432.8A 2016-03-16 2016-03-16 A kind of refrigerating plant for downhole instrument Active CN105823272B (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108317768A (en) * 2017-12-29 2018-07-24 中国海洋石油集团有限公司 The active cooling systems of downhole spectrometer
CN111982842A (en) * 2020-08-05 2020-11-24 北京宏源四方科技开发有限公司 Fluid analysis nipple for petroleum logging instrument
CN114542054A (en) * 2022-01-26 2022-05-27 西安振宇电子工程有限公司 Internal structure device of instrument while drilling using metal thermos bottle
CN114845514A (en) * 2021-01-30 2022-08-02 中国石油化工集团有限公司 Logging instrument circulation heat abstractor

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US4224805A (en) * 1978-10-10 1980-09-30 Rothwell H Richard Subterranean heat exchanger for refrigeration air conditioning equipment
US5619611A (en) * 1995-12-12 1997-04-08 Tub Tauch-Und Baggertechnik Gmbh Device for removing downhole deposits utilizing tubular housing and passing electric current through fluid heating medium contained therein
RU2194862C2 (en) * 2001-01-12 2002-12-20 Российский научно-исследовательский институт горноспасательного дела Method of extinguishing mine fires and device for method embodiment
CN201141298Y (en) * 2007-11-01 2008-10-29 大庆石油管理局 Heat preserving structure for logger
CN101906959A (en) * 2010-08-04 2010-12-08 北京天形精钻科技开发有限公司 One-way cooling device of down-hole drilling tester
CN202101690U (en) * 2011-05-30 2012-01-04 东北石油大学 Heat-preserving casing for logging instrument
CN102900397A (en) * 2012-10-24 2013-01-30 中国石油天然气股份有限公司 Underground semiconductor refrigerating device
US20150068230A1 (en) * 2011-10-18 2015-03-12 Los Alamos National Security, Llc Cooling devices and methods for use with electric submersible pumps

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4224805A (en) * 1978-10-10 1980-09-30 Rothwell H Richard Subterranean heat exchanger for refrigeration air conditioning equipment
US5619611A (en) * 1995-12-12 1997-04-08 Tub Tauch-Und Baggertechnik Gmbh Device for removing downhole deposits utilizing tubular housing and passing electric current through fluid heating medium contained therein
RU2194862C2 (en) * 2001-01-12 2002-12-20 Российский научно-исследовательский институт горноспасательного дела Method of extinguishing mine fires and device for method embodiment
CN201141298Y (en) * 2007-11-01 2008-10-29 大庆石油管理局 Heat preserving structure for logger
CN101906959A (en) * 2010-08-04 2010-12-08 北京天形精钻科技开发有限公司 One-way cooling device of down-hole drilling tester
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108317768A (en) * 2017-12-29 2018-07-24 中国海洋石油集团有限公司 The active cooling systems of downhole spectrometer
CN111982842A (en) * 2020-08-05 2020-11-24 北京宏源四方科技开发有限公司 Fluid analysis nipple for petroleum logging instrument
CN114845514A (en) * 2021-01-30 2022-08-02 中国石油化工集团有限公司 Logging instrument circulation heat abstractor
CN114542054A (en) * 2022-01-26 2022-05-27 西安振宇电子工程有限公司 Internal structure device of instrument while drilling using metal thermos bottle
CN114542054B (en) * 2022-01-26 2024-05-24 西安振宇电子工程有限公司 Internal structure device of instrument while drilling using metal thermos bottle

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Effective date of registration: 20180626

Address after: 710065 floor 1, A block 3, productivity building, No. 3 electronic West Street, hi tech Zone, Shaanxi.

Patentee after: Xi'an Zhenyu Electronic Engineering Co., Ltd.

Address before: 710065 floor 1, A block 3, productivity building, No. 3 electronic West Street, hi tech Zone, Shaanxi.

Patentee before: Wang Shaobin