CN103775059B - Secondary heat exchange is noninductive heated-air circulation oven - Google Patents
Secondary heat exchange is noninductive heated-air circulation oven Download PDFInfo
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- CN103775059B CN103775059B CN201210394392.5A CN201210394392A CN103775059B CN 103775059 B CN103775059 B CN 103775059B CN 201210394392 A CN201210394392 A CN 201210394392A CN 103775059 B CN103775059 B CN 103775059B
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Abstract
The present invention relates to the noninductive heated-air circulation ovens of secondary heat exchange.Provide a kind of noninductive heated-air circulation oven of secondary heat exchange for logger temperature correction, including electric heating heat exchanger（301）, electrical heating heat exchange pipeline（302）, electric heating heat exchanger wind turbine（303）, circulating fan（308）, baking oven wind pipe（309）, oven body（310）, baking oven intake stack（312）.The baking oven provides the controllable temperature test environment in certain temperature range for tested induction instrument aratus, and baking oven does not influence above-mentioned temperature correction process.The temperature control of baking oven can reach certain precision and uniformity requirement, to meet the requirement of induction instrument aratus bulk temperature test.
Description
Technical field
The present invention relates to a kind of hot-air ovens, more particularly relate to the secondary heat exchange of induction logging instrument temperature correction
Noninductive heated-air circulation oven.
Background technology
Induction logging instrument is the mutual inductance principle using alternating current, is being received using the alternating current in transmitting coil antenna
Electromotive force is induced in coil, since transmitting coil antenna and receiving coil antenna are all in well, the exchange of transmitting coil antenna
Electric current necessarily induces vortex in pit shaft surrounding formation, and the vortex generates shadow to the induced electromotive force of receiving coil antenna
It rings, therefore the electromotive force is related with the intensity of vortex, i.e., it is related with the conductivity on stratum.
Array induction logging tool is grown up on the basis of common induction instrument aratus, which has certain diameter
To detectivity.The array induction logging tool forms coil array to same using a series of coil antenna array of different coil spacings
Stratum measures, and is then focused processing by hardware or software to obtain the stratum conductance of different radials depth of investigetion
Rate, to efficiently identify oil-gas Layer.Array induction logging tool sends electromagnetic field to stratum, is connect by each coil antenna array
Receive, the signal received after downhole instrument is handled the spread of the rumours to ground instrument.The key component of the coil array of entire instrument is by more
The three-winding aerial array of a single-sided arrangement, such as seven three-winding aerial arrays are constituted, and are operated in multiple frequency modes
Under.
The precision of coil antenna array plays a decisive role to measurement accuracy.It, need to be according to existing during design
Technological ability is horizontally formed rational coil array configuration.Common structure is to be wound on certain insulating body to be formed using conducting wire
Coil antenna.Coil antenna insulating body after winding is arranged in order composition coil antenna array along the axis of instrument, this
A little coil wire arrays just constitute coil array.
Environment temperature is up to 180 DEG C in well logging, and environmental pressure is up to 140Mpa.Induction instrument aratus probe component is general
Pressure balancing system is generally used, that is, passes through silicon to make probe bear the environmental condition of such high temperature and pressure for nonmetallic materials
It is internal that oil medium makes the environment temperature of mud and pressure introduce probe.Then probe inside and stratum temperature having the same.
In order to make, insulating body obtains higher machining precision and higher thermal stability, industry have been introduced into engineering knot
Insulating body of the structure ceramic as coil antenna.Common ceramic material is generally aluminium oxide ceramics and silicon nitride ceramics, high temperature
Sinter molding is hollow cylinder, utilizes small and without magnetic insulation the characteristic of its coefficient of thermal expansion.
But thermal expansion effects still remain, induction logging instrument is highly susceptible to the influence of thermal expansion effects.Work as instrument
The temperature of local environment can cause the size of instrument coil antenna dielectric matrix to change when changing, then the coil of coil array
The minor alteration of the geometries such as the distance between area and coil.Meanwhile the electromagnetic parameters such as impedance of coil method itself
There can be minor alteration with temperature.These changes can bring very important influence to the measurement of formation resistivity.We are this
The measured deviation caused by temperature change is known as temperature effect.To eliminate temperature effect, induction instrument aratus is generally tested by temperature
Method obtain the quantitative relationship between temperature and temperature effect, then again by data processing come compensation temperature effect, this
A process is known as temperature correction.
Then just needing a kind of baking oven, major function is provided in certain temperature range for tested induction instrument aratus
Controllable temperature test environment, to realize above-mentioned temperature correction process.And the presence of baking oven cannot interfere above-mentioned temperature
Correction course.The temperature control of baking oven need to reach certain precision and uniformity requirement, such as the temperature uniformity of baking oven must not be big
In ± 4 DEG C, to meet the requirement of induction instrument aratus bulk temperature test.
Currently without this baking oven to meet above-mentioned requirements.
Invention content
It is an object of the invention to provide a kind of baking oven for induction instrument aratus, major function is for tested induction instrument aratus
The controllable temperature test environment in certain temperature range is provided, and baking oven cannot influence above-mentioned temperature correction process.Baking oven
Temperature control need to reach certain precision and uniformity requirement, to meet induction instrument aratus bulk temperature test requirement.
In order to meet above-mentioned requirements, the present invention provides a kind of noninductive heated-air circulation ovens of secondary heat exchange.
According to an aspect of the invention, there is provided a kind of noninductive hot wind of secondary heat exchange for logger temperature correction
Recycle baking oven, including electric heating heat exchanger 301, electrical heating heat exchange pipeline 302, electric heating heat exchanger wind turbine 303, circulating fan
308, baking oven wind pipe 309, oven body 310, baking oven intake stack 312；It is characterized in that：
The secondary heat exchange includes interior cycle and outer circulation two-way, and interior cycle is primary heat exchange, and outer circulation is secondary heat exchange；
Internal circulation system includes electric heating heat exchanger 301, electrical heating heat exchange pipeline 302 and electric heating heat exchanger wind turbine 303；It follows outside
Loop system includes circulating fan 308, baking oven wind pipe 309, oven body 310 and baking oven intake stack 312；Interior cycle
Heat source is the heater 51 being located in electric heating heat exchanger 301, and the heat source of outer circulation is to be located at changing in electric heating heat exchanger 301
Hot device；Oven body 310 has the cavity for temperature correction；
The electric heating heat exchanger wind turbine 303 provides the power of interior cycle, and electrical heating heat exchange pipeline 302 is changed positioned at electrical heating
On hot device 301 and connect the electric heating heat exchanger wind turbine 303 and the electric heating heat exchanger 301；Circulating fan 308 provides outer
The power of cycle, baking oven intake stack 312 and baking oven wind pipe 309 connect oven body 310 and electric heating heat exchanger 301；
The electric heating heat exchanger 301, electrical heating heat exchange pipeline 302, electric heating heat exchanger wind turbine 303, circulating fan
308, baking oven wind pipe 309, baking oven intake stack 312 are put together at side；The oven body 310 is placed on other one
Side；The oven body 310 is made of nonmetallic materials.
According to another aspect of the present invention, the baking oven intake stack 312 and baking oven wind pipe 309 are by non-metallic material
Material is made.
According to another aspect of the invention, the baking oven intake stack 312 has air inlet valve 304 and air inlet 305, described
Air inlet valve 304 and air inlet 305 are between circulating fan 308 and electric heating heat exchanger 301；The baking oven intake stack 312
With exhaust duct 306 and exhaust valve 307, the exhaust duct 306 and exhaust valve 307 be located at circulating fan 308 and oven body 310 it
Between.
According to another aspect of the invention, the air inlet valve 304 and exhaust valve 307 are by solenoid valve and manually-operated gate group
At its switch of solenoid valve control, manually-operated gate controls its aperture.
According to another aspect of the invention, the oven body 310 is made of air intake passage, service aisle and air-out passage；
Air intake passage connects baking oven intake stack 312, and air-out passage connects baking oven wind pipe 309.
According to another aspect of the invention, the oven body 310 has front door 402 and back door 311, is separately mounted to front end
On lid 401 and rear end cap 407.
According to another aspect of the invention, the back door 311 is set as explosion relief port.
According to another aspect of the invention, the oven body 310 includes the insulating layer for the multi-ply construction being configured to.
According to another aspect of the invention, the oven body 310 is divided into two sections of dismountable structures in length direction；It is described
Oven body 310 connects bolt 406 by oven body and connects two sections of oven bodies to form an entirety.
According to another aspect of the invention, the top in the oven body 310 is equipped with by upper movable regulating plate 419 and upper solid
Determine the air distribution plate of the composition of adjustable plate 421；There are many holes on upper movable regulating plate 419 and upper secured adjusted plate 421, pass through up-regulation
Pole 420 adjusts upper movable regulating plate 419 to the relative position of upper secured adjusted plate 421 to realize the tune of exhaust vent size
Section, the horizontal direction are the width direction of oven body 310；Lower part in oven body 310 is equipped with 424 He of lower movable regulating plate
The air distribution plate that lower secured adjusted plate 426 forms has many holes on lower movable regulating plate 424 and lower secured adjusted plate 426, passes through
Lower dolly bar 425 adjusts lower movable regulating plate 424 to the relative position of lower secured adjusted plate 426 to realize the tune of air inlet aperture
Section.
According to another aspect of the invention, there are the oven body 310 multiple idler wheels of logger guiding to assemble
415, the multiple idler wheel assembly 415 is respectively mounted in multiple u-brackets 414, and the multiple u-bracket 414 is in baking oven
It is evenly distributed successively along the length direction of oven body in the service aisle 412 of body 310；The idler wheel assembly 415 includes idler wheel
422 and bushing 423；The both ends of the idler wheel 422 are mounted on by bushing 423 in the groove at 414 both ends of u-bracket；U-bracket
414 bottom surface has many holes, and the hole is for being connected to air intake passage 411 and service aisle 412.
According to another aspect of the invention, the whole of the oven body 310 to wooden frame 409 and is grown from wide to wooden frame 408, height
It is shaped to the wooden frame mortise-tenon joint in 410 3 directions of wooden frame, supporting member of these wooden frames as oven body 310.
According to another aspect of the invention, the inner wall of the oven body 310 PTFE made of polytetrafluoroethylene (PTFE) plate is served as a contrast
Plate 427 is constituted；The insulating layer of oven body 310 includes silicate aluminum board 428 and alumina silicate fibre 429；Shell 430 is glass fibre reinforced plastic insulating
Plate；Oven body 310 is followed successively by PTFE liner plates 427, silicate aluminum board 428 and alumina silicate fibre 429 and shell 430 from the inside to the outside；
PTFE liner plates 427, silicate aluminum board 428 and alumina silicate fibre 429 are fastened on shell 430 by the bolt 431 of polytetrafluoroethylene (PTFE)
On；The shell 430 is fastened on by nylon bolt on the wooden frame in three directions.
According to another aspect of the invention, the oven body 310 further includes upper cover plate 417 and side cover plate 418；The upper cover
Plate 417 and side cover plate 418 are electrician's plate, and are fastened on the wooden frame of many places by nylon bolt；Upper cover plate 417 and side cover plate 418
With having a certain distance between shell 430, so that it is guaranteed that oven body 310 not will produce excessively high temperature.
According to another aspect of the invention, the material of the adjustable plate is ceramics.
According to another aspect of the invention, the electric heating heat exchanger wind turbine 303 and circulating fan 308 exchange heat with electrical heating
Device 301 realizes chain control, to when starting to work, it is necessary to first start wind turbine, restart heater.
According to another aspect of the invention, the internal circulation system includes being executed by platinum resistance, temperature measurer and overtemperature alarm
The TT＆C system of circuit composition.
According to another aspect of the invention, the cavity of the oven body 310 includes Cryocooler Temperature Closed Loop Control System, the temperature
Closed-loop control system includes the temperature control platinum resistance for being installed on cavity stage casing, temperature controller and zero cross fired silicon controlled module；The temperature
Adjusting of the closed-loop control system adjustment temperature controller to the heating power of heater 51 is spent, realizes automatically controlling for cavity temperature.
According to another aspect of the invention, if the rate of temperature fall of cavity is more than Temperature fall rate, pass through air inlet valve 304
With exhaust valve 307 to cavity supplements cold, discharge hot-air.
By adopting the above-described technical solution, the present invention has the advantage that and good effect：
1. the specific implementation of secondary heat exchange includes interior cycle and outer circulation two-way, interior cycle is primary heat exchange, and outer circulation is
Secondary heat exchange.Electrothermal tube is arranged to provide heat source by one cycle hot wind for secondary cycle hot wind.Preferably, in an air duct
Hot blast temperature controls within 280 DEG C, less than the flash-point that induction logging instrument includes oil product.It can guarantee the equipment in oil leak
Safe operation.Essential safety is accomplished.
2. two hot air circulation blowers realize chain control with electric heater, that is, when starting to work, it is necessary to first start wind
Machine restarts electric heater.Pre- electricity-proof heater overheat.
3. oven body is all made of nonmetallic materials, including timber, engineering plastics, engineering ceramics and nonmetallic heat preservation
Material.Preferably, baking oven intake stack and baking oven wind pipe are made of nonmetallic materials.It ensure that noninductive test environment, really
Guarantor cannot interfere induction instrument aratus temperature correction process.Oven body is divided into two sections of dismountable structures in length direction, to convenient
The dismounting of equipment.
4. the insulating layer of oven body includes silicate aluminum board and alumina silicate fibre, shell is glass fibre reinforced plastic insulating plate, oven body by
It is interior to outer to be followed successively by polyfluortetraethylene plate, silicate aluminum board and alumina silicate fibre and shell.Insulation construction is simple and effective.Shell
There is cover board outside, and is fastened on the wooden wooden frame in many places by nylon bolt, solid beauty.Cover board is the outermost layer of oven body,
Temperature can be prevented excessively high.
5. passing through the heating power of the temperature-control heat couple closed-loop control heater in oven body cavity.If baking oven body cavity
Body require rate of temperature fall be more than Temperature fall rate, by two automatic valves to cavity supplements cold, discharge hot-air, wind
Amount is determined by the open degree of hand-operated valve.Ensure the requirement that instrument temperature can be answered to correct temperature rate with satisfaction.
6. top and the bottom in oven body have many places exhaust vent being made of movable regulating plate and secured adjusted plate and into
The size of air holes, hole can be sectional-regulated, and intermediate u-bracket has porous.It can ensure that in service aisle along baking oven body length
The temperature uniformity in direction is less than ± 4 DEG C.
7. the idler wheel assembly of instrument direction is mounted on u-bracket groove, along length in the service aisle of oven body
Degree direction uniformly arranges successively, ensures instrument uniform force.
In conclusion the noninductive heated-air circulation oven of secondary heat exchange provides certain temperature model for tested induction instrument aratus
Interior controllable temperature test environment is enclosed, induction instrument aratus temperature correction process is realized.Interference temperature did not corrected for the presence of baking oven
Journey.The temperature control of baking oven has reached precision and uniformity requirement, and the temperature uniformity of baking oven is less than ± 4 DEG C.To satisfaction
The requirement for answering instrument bulk temperature to test.
Description of the drawings
By detailed description below in conjunction with the accompanying drawings, these and other objects of the invention and advantage will be apparent,
In attached drawing：
Fig. 1 is the outer of the induction logging instrument of the carried out temperature correction of the noninductive heated-air circulation oven of secondary heat exchange of the present invention
Shape figure.
Fig. 2 is the carried out temperature correction induction logging instrument coil day of the noninductive heated-air circulation oven of secondary heat exchange of the present invention
The outline drawing of linear array.
Fig. 3 A are the stereograms of the noninductive heated-air circulation oven of secondary heat exchange of the present invention.
Fig. 3 B are the outline drawings of the noninductive heated-air circulation oven of secondary heat exchange of the present invention.
Fig. 3 C are the vertical views of the noninductive heated-air circulation oven of secondary heat exchange of the present invention.
Fig. 3 D are the nonmetallic side side views of the noninductive heated-air circulation oven of secondary heat exchange of the present invention.
Fig. 4 A are the length direction sectional views of the oven body 310 of the noninductive heated-air circulation oven of secondary heat exchange of the present invention.
Fig. 4 B are the width direction sectional views of the oven body 310 of the noninductive heated-air circulation oven of secondary heat exchange of the present invention.
Fig. 5 is the sectional view of the electric heating heat exchanger 301 in the noninductive heated-air circulation oven of secondary heat exchange of the present invention.
Fig. 6 A are 415 solids of u-bracket 414 and idler wheel assembly in the noninductive heated-air circulation oven of secondary heat exchange of the present invention
Figure.
Fig. 6 B are 415 solids of u-bracket 414 and idler wheel assembly in the noninductive heated-air circulation oven of secondary heat exchange of the present invention
Figure, it is illustrated that be connecting line.
Fig. 7 A are upper movable regulating plate 419 and upper secured adjusted in the noninductive heated-air circulation oven of secondary heat exchange of the present invention
421 stereogram of plate.
Fig. 7 B are upper movable regulating plate 419 and upper secured adjusted in the noninductive heated-air circulation oven of secondary heat exchange of the present invention
421 vertical view of plate.
Fig. 8 A are the temperature control curve figures of the noninductive heated-air circulation oven of secondary heat exchange of the present invention.
Fig. 8 B be the present invention the noninductive heated-air circulation oven of secondary heat exchange service aisle in it is more along oven body length direction
The actual temperature curve that point measures, does not open air inlet valve 304.
Fig. 8 C be the present invention the noninductive heated-air circulation oven of secondary heat exchange service aisle in it is more along oven body length direction
The actual temperature curve that point measures opens air inlet valve 304.
Specific implementation mode
By illustrative mode, the present invention is described in further detail in the following with reference to the drawings and specific embodiments.
As shown in Figure 1, induction logging instrument is generally by electronic cartridge 11, it is preceding to put 13 groups of pipe nipple 12 and probe nipple
At.Other pipe nipples of logger string are connected up after the connection of these pipe nipples, finally connect halter and logging cable to ground
Acquisition system.Electronic cartridge 11 and before put power supply, transmitting and Acquisition Circuit in pipe nipple 12 equipped with logger and logical
Interrogate circuit.The sensor of logger is housed in probe nipple 13.Electronic cartridge 11 is metal material with pipe nipple 12 is before put
It is made, carries the environmental pressure of external 140Mpa；And the shell of probe nipple 13 is made of nonmetallic materials, inside is filled out by silicone oil
It fills, the environmental pressure of external 140Mpa is guided to silicone oil by device, it is ensured that the environmental pressure phase of silicone oil and outside 140Mpa
Together.
As shown in Fig. 2, the coil antenna insulating body composition coil antenna array 22 of induction logging instrument is arranged in successively
Outside mandrel 21.Due to thermal expansion effects, instrument coil antenna dielectric matrix can be caused when the temperature of instrument local environment changes
Size change, the then minor alteration of the geometries such as the distance between area coil and coil of coil array.Meanwhile
The electromagnetic parameters such as the impedance of coil method itself also can have minor alteration with temperature.These changes can be to the measurement of formation resistivity
Bring very important influence.This measured deviation caused by temperature change is called temperature effect by we.To eliminate temperature
Effect, induction instrument aratus generally obtain the quantitative relationship between temperature and temperature effect by the method for temperature experiment, then again
By data processing come compensation temperature effect, this process is known as temperature correction.
Secondary heat exchange is noninductive heated-air circulation oven, hereinafter referred to as noninductive baking oven, major function are for tested induction
Instrument provides the controllable temperature test environment in certain temperature range, to realize above-mentioned temperature correction process, and baking oven
Presence cannot interfere above-mentioned temperature correction process.The temperature control of oven body need to reach certain precision and uniformity requirement,
As an example, such as the temperature uniformity of oven body is not greater than ± 4 DEG C, to meet the test of induction instrument aratus bulk temperature
Requirement.
As shown in Figure 3A, entire noninductive baking oven includes：Electric heating heat exchanger 301, electrical heating heat exchange pipeline 302, electrical heating
Heat exchanger blower 303, air inlet valve 304, air inlet 305, exhaust duct 306, exhaust valve 307, circulating fan 308, baking oven discharge pipe
Road 309, oven body 310, back door 311, baking oven intake stack 312, duct frame 313.
The specific implementation of the secondary heat exchange includes interior cycle and outer circulation two-way, and interior cycle is primary heat exchange, outer circulation
For secondary heat exchange.Internal circulation system includes mainly electric heating heat exchanger 301, electrical heating heat exchange pipeline 302 and electrical heating heat exchange
Device wind turbine 303.External circulating system mainly include circulating fan 308, baking oven wind pipe 309, oven body 310 and baking oven into
Wind pipeline 312.The heat source of interior cycle is the high-power electric heating tube being located in electric heating heat exchanger 301, and the heat source of outer circulation is
Heat exchanger in electric heating heat exchanger 301.Oven body 310, which is formed, is used for carrying out the cavity of temperature correction, sense when work
It answers logger to be pushed into oven body 310 and carries out temperature correction.
The heat source of interior cycle is the high-power electric heating tube being located in electric heating heat exchanger 301, electric heating heat exchanger wind turbine
303 provide the interior power recycled, and electrical heating heat exchange pipeline 302 is located on electric heating heat exchanger 301 and connects the two.Outer circulation
Heat source is the heat exchanger being located in electric heating heat exchanger 301, and circulating fan 308 provides the power of outer circulation, baking oven intake stack
312 and baking oven wind pipe 309 connect oven body 310 and electric heating heat exchanger 301.The medium of the inside and outside cycle is sky
Gas.Duct frame 313 is that baking oven intake stack 312 and baking oven wind pipe 309 provide good fixed support.
As shown in Figure 3B, the noninductive baking oven is integrally placed on ground.Preferably, electric heating heat exchanger 301, electricity add
Hot heat exchange pipeline 302, electric heating heat exchanger wind turbine 303, air inlet valve 304, air inlet 305, exhaust duct 306, exhaust valve 307 follow
Ring wind turbine 308, baking oven wind pipe 309, baking oven intake stack 312, these components are put together at side, that is, the left side illustrated
Side.And oven body 310 is in other side, that is, the right side illustrated.Induction logging instrument is pushed into baking oven from left to right when work
Temperature correction is carried out in body 310.
As shown in Figure 3 C, the left side of dotted line is the metal area of the noninductive baking oven, and the right side of dotted line is the noninductive baking oven
Non-metallic areas, i.e., without sensillary area.The oven body 310 is all made of nonmetallic materials, including timber, engineering plastics, engineering
Ceramics and non-metallic insulation material.The insulating layer of the oven body 310 is multi-ply construction.The oven body 310 by air intake passage,
Service aisle and air-out passage are constituted.Air intake passage connects baking oven intake stack 312, and air-out passage connects baking oven wind pipe
309.Induction logging instrument is pushed into the service aisle in oven body 310 from left to right when work and carries out temperature correction.It is preferred that
Ground, baking oven intake stack 312 and baking oven wind pipe 309 are made of nonmetallic materials.
As shown in Figure 3D, there is back door 311 on oven body 310, have there are one before on another end face of oven body 310
Door.The purpose at back door 311 is sent back to after a part for instrument is carried out certain operations after being sent out in oven body 310 herein.And
Front door at other one is the mouth for being pushed into logger.Air inlet valve 304 and air inlet 305 are on baking oven intake stack 312, position
Between circulating fan 308 and electric heating heat exchanger 301, realize that indoor cold wind enters oven body 310.Exhaust duct 306 and air draft
For valve 307 between circulating fan 308 and oven body 310, its object is to the hot wind in oven body 310 is discharged.Air inlet valve 304
It is made of solenoid valve and manually-operated gate with exhaust valve 307, solenoid valve control switch, manually-operated gate controls aperture.When cooling into
Air-valve 304 can be controlled by program and be automatically opened, and exhaust valve 307 is automatically opened by time relay control, to the speed to cooling
Rate is efficiently controlled.
In Figure 4 A, the oven body 310 is made of air intake passage 411, service aisle 412 and air-out passage 405.Air inlet
Channel 411 connects baking oven intake stack 312 by noting air port 416, and air-out passage 405 connects baking oven outlet air by air outlet 403
Pipeline 309.Hot wind injects intake stack 312 from note air port 416, by being flowed through after service aisle 412 after air-out passage 405 by going out
It flows out in air port 403.When work, 402 removal of front door, then induction logging instrument be pushed into from left to right in oven body 310 into
Trip temperature corrects.
As shown in Figure 4 A, there are front door 402 and back door 311 respectively at the both ends of oven body 310, be separately mounted to drive end bearing bracket
401 and rear end cap 407 on.The material at front door 402 and back door 311 can be ceramics or polytetrafluoroethylene (PTFE).Instrument enters oven body
Back door 311 is closed, and ensures the uniformity of warm cavity temperature.The thermal insulation material of drive end bearing bracket 401 and rear end cap 407 is made pottery for alumina silicate
Porcelain.Front door 402 is there are measuring instrument wiring punched out, and entire back door 311 is set as explosion relief port, it is ensured that the peace of equipment and personnel
Entirely, there are silicone oil pipelines at back door（Hose）Outlet, diameter 20mm.
As illustrated in figures 4 a and 4b, oven body 310 is whole from wide to wooden frame 408, high to wooden frame 409 and long to wooden frame 410
The wooden frame mortise-tenon joint in these three directions shapes, supporting member of these wooden frames as oven body 310.It is wide to wooden frame in Fig. 4 A
408 provide be its section position.Oven body 310 is divided into two sections of dismountable structures in length direction, to facilitate equipment
Dismounting.Bolt 406 is connected by oven body and connects two sections of oven bodies to form an entirety, and oven body connects bolt 406
Connection is the wide to wooden frame 408 and high to wooden frame 409 of two sections of oven bodies.
As shown in Figure 4 B, the inner wall PTFE liner plates 427 of oven body 310 use polytetrafluoroethylene (PTFE)（PTFE）Plate is made, resistance to
Temperature is functional, and use reliability is high.The insulating layer of oven body 310 includes silicate aluminum board 428 and alumina silicate fibre 429, shell
430 be glass fibre reinforced plastic insulating plate.Oven body 310 is followed successively by the polyfluortetraethylene plate of PTFE liner plates 427, silicate aluminum board from the inside to the outside
428 and alumina silicate fibre 429 and shell 430, by the bolt 431 of polytetrafluoroethylene (PTFE) PTFE liner plates 427, silicate aluminum board
428 and alumina silicate fibre 429, it is fastened on shell 430.The shell 430 is fastened on the wood in three directions by nylon bolt
On frame.
Top in oven body 310 is equipped with the air distribution plate being made of upper movable regulating plate 419 and upper secured adjusted plate 421,
There are many holes on upper movable regulating plate 419 and upper secured adjusted plate 421, pass through moving horizontally in adjusting for upper adjusting rod 420
Movable regulating plate 419 realizes the relative position of upper secured adjusted plate 421 adjusting of exhaust vent size, the horizontal direction are to dry
The width direction of babinet 310.Lower part equally in oven body 310 is equipped with lower movable regulating plate 424 and lower secured adjusted plate 426
The air distribution plate of composition, lower dolly bar 425 are the adjusting screw rod realized lower movable regulating plate 424 and moved.Pass through lower movable regulating plate
The adjusting of air inlet aperture is realized in the adjusting of the relative position of 424 pairs of lower secured adjusted plates 426.Then, along 310 length side of oven body
There is different size of hole to setting up, realize the adjusting in different length position enterprising air holes and air outlet size, it is ensured that dry
Temperature uniformity in babinet 310.The material of above-mentioned many places adjustable plate is ceramics.
As shown in Figure 4 A, the idler wheel assembly 415 of instrument direction is mounted on u-bracket 414, along in oven body 310
It is alongst uniformly arranged successively in service aisle 412, ensures instrument uniform force.As shown in Figure 4 B, idler wheel assembles
415 include idler wheel 422 and bushing 423.The both ends of idler wheel 422 are mounted on by bushing 423 in the groove at 414 both ends of u-bracket.
The material of bushing 423 is polytetrafluoroethylene (PTFE), the bearing shell rotated as idler wheel 422, it is ensured that smaller frictional force.414 He of u-bracket
The material of idler wheel 422 is ceramics.It is connection 411 He of air intake passage that the bottom surface of u-bracket 414, which has many holes, the hole,
412 air holes of service aisle.
As shown in Figure 4 B, oven body 310 is made of upper cover plate 417 and side cover plate 418.The upper cover plate 417 and side cover plate
418 be electrician's plate, and is fastened on the wooden wooden frame in many places by nylon bolt, solid beauty.Upper cover plate 417 and side cover plate
418 with having a certain distance between shell 430, so that it is guaranteed that oven body 310 not will produce excessively high temperature.
As shown in figure 5, electric heating heat exchanger 301 is made of heater 51 and 52 two parts of heat exchanger.The heating of heater
Element uses band Electrothermic tube with fins.Electrothermal tube is arranged to provide heat source by one cycle hot wind for secondary cycle hot wind.It is preferred that
Ground, hot blast temperature control is within 280 DEG C in an air duct, less than the flash-point that induction logging instrument includes oil product.It can guarantee
The safe operation of equipment when oil leak.Heat exchanger 52 uses shell-and-tube heat exchanger, ensures control sensitivity.Two hot air circulations
Wind turbine realizes chain control with electric heater, that is, when starting to work, it is necessary to first start wind turbine, restart electric heater.
The air to exchange heat through electric heating heat exchanger 301 is blown by circulating fan 308 in the cavity of oven body 310, by drying
Electric heating heat exchanger is returned to by wind pipe 309 again after 310 cavity of babinet cycle.Pass through the temperature control heat in 310 cavity of oven body
The heating power of galvanic couple closed-loop control heater 51.If the rate of temperature fall that 310 cavity of babinet requires is more than Temperature fall rate,
By air inlet valve 304 and exhaust valve 307 to cavity supplements cold, discharge hot-air, air quantity is determined by the open degree of hand-operated valve.
Hot wind TT＆C system is made of platinum resistance, temperature measurer, overtemperature alarm execution circuit.Its function is to ensure that electricity adds
Hot blast temperature of heat exchanger 301 controls within 280 DEG C, to ensure the safe operation of equipment.
The temperature control system of 310 cavity of oven body mainly by be installed on the temperature control platinum resistance in cavity stage casing, temperature controller and
Zero cross fired silicon controlled module forms a complete Cryocooler Temperature Closed Loop Control System.Temperature controller is adjusted to electric heater by PID
Heating power be adjusted, the temperature of control chamber body circulation hot wind realizes automatically controlling for cavity temperature.If the drop of cavity
Warm rate is more than Temperature fall rate, by air inlet valve 304 and exhaust valve 307 to cavity supplements cold, discharge hot-air,
Meet rate of temperature fall requirement.Cavity temperature measuring system has two-way, by the measurement platinum resistance, the thermometric that are installed on left and right section of cavity
Instrument forms, for monitoring cavity temperature.
As shown in Figure 6 A and 6B, idler wheel assembly 415 includes idler wheel 422 and bushing 423.The both ends of idler wheel 422 pass through bushing
423 are mounted in the groove 64 at 414 both ends of u-bracket.Bottom plate 62 of the u-bracket 414 including being provided with several ventilation holes 61, and
Holder 63 on bottom plate 62.Arrow direction shown in Fig. 6 A is the direction of hot wind flow.U-bracket 414 is cast as bulk ceramics
Type.The material of bushing 423 is polytetrafluoroethylene (PTFE), and bushing 423 rotates the both ends of idler wheel 422, and bushing 423 is also in groove 64
Rotation, the bearing shell rotated as idler wheel 422, it is ensured that smaller frictional force.Work of the same u-bracket 414 in oven body 310
It is arranged in order along its length in channel 412.Idler wheel 422 is the support of instrument, ensures instrument uniform force.
As shown in figs. 7 a-b, upper movable regulating plate 419 and upper secured adjusted plate 421 constitute air distribution plate.Upper activity is adjusted
The adjusting that plate 419 realizes the relative position of upper secured adjusted plate 421 exhaust vent size is saved, arrow direction is oven body in figure
310 width direction.Similarly, lower movable regulating plate 424 and lower 426 structure type having the same of secured adjusted plate.
Temperature control curve as shown in Figure 8 A gives the temperature control point of control program and executes the time.It is entire bent
Line decilitre temperature, heat preservation and cooling three phases.Maximum temperature point is 180 DEG C.
Actual measured results as shown in Figure 8 B, are heated to 180 DEG C for 4 hours, no overshoot, PID amplitude limits 80%, and constant temperature 2.5 is small
When；Then hot wind exhaust valve 307 is opened in elder generation's Temperature fall 3 hours when cooling, manual valve port opens half, drops within about 5.5 hours
Temperature is to 55 DEG C.- 0.7 DEG C/min of maximum rate of temperature fall.180 DEG C of holding stage temperature difference are less than 1 DEG C.Uniformity index is outstanding, reaches
±3℃。
Actual measured results as shown in Figure 8 C are heated to 180 DEG C for about 4 hours, constant temperature 2 hours；When cooling, first drop naturally
Then temperature 20 minutes opens air inlet valve 304, manual valve port opens 2cm, and hot wind exhaust valve 307 is opened after 17 minutes 4 hours；
It is cooled to 55 DEG C within about 5 hours.Due to the unlatching of air inlet valve 304, maximum rate of temperature fall reaches -1.97 DEG C/min.180 DEG C of heat preservations
The stage temperature difference is less than 1 DEG C.Uniformity index is outstanding, reaches ± 3 DEG C.
It should be understood that the above embodiments are only used to illustrate and not limit the technical solutions of the present invention.Although with reference to upper
Embodiment is stated to describe the invention in detail, but it will be understood by those of ordinary skill in the art that：It still can be to this
Invention is modified or replaced equivalently, and without departing from the spirit and scope of the present invention, and appended claims are intended to fall
Enter these modifications or the equivalent replacement in spirit and scope of the invention.
Reference numerals list
Drive end bearing bracket 401
Front door 402
Air outlet 403
Exhausting plate 404
Air-out passage 405
Oven body connects bolt 406
Rear end cap 407
Back door 408
It is wide to wooden frame 409
Height is to wooden frame 410
It grows to wooden frame 411
Air intake passage 412
Service aisle 413
Air intake plate 413
U-bracket 414
Idler wheel assembly 415
Note air port 416
Upper cover plate 417
Side cover plate 418
Upper movable regulating plate 419
Upper adjusting rod 420
Upper secured adjusted plate 421
Idler wheel 422
Bushing 423
Lower movable regulating plate 424
Lower dolly bar 425
Lower secured adjusted plate 426
PTFE liner plates 427
Silicate aluminum board 428
Alumina silicate fibre 429
Shell 430
Connect bolt 431
Instrument 432.
Claims (19)
1. a kind of noninductive heated-air circulation oven of secondary heat exchange for logger temperature correction, including electric heating heat exchanger
（301）, electrical heating heat exchange pipeline（302）, electric heating heat exchanger wind turbine（303）, circulating fan（308）, baking oven wind pipe
（309）, oven body（310）, baking oven intake stack（312）；It is characterized in that：
The secondary heat exchange includes interior cycle and outer circulation two-way, and interior cycle is primary heat exchange, and outer circulation is secondary heat exchange, described
The hot blast temperature once to exchange heat controls within 280 DEG C；Internal circulation system includes electric heating heat exchanger（301）, electrical heating heat exchange
Pipeline（302）And electric heating heat exchanger wind turbine（303）；External circulating system includes circulating fan（308）, baking oven wind pipe
（309）, oven body（310）And baking oven intake stack（312）；The heat source of interior cycle is to be located at electric heating heat exchanger（301）In
Heater（51）, the heat source of outer circulation is to be located at electric heating heat exchanger（301）In heat exchanger；Oven body（310）With use
In the cavity of temperature correction；
The electric heating heat exchanger wind turbine（303）The power recycled in providing, electrical heating heat exchange pipeline（302）It is changed positioned at electrical heating
Hot device（301）It goes up and connects the electric heating heat exchanger wind turbine（303）With the electric heating heat exchanger（301）；Circulating fan
（308）The power of outer circulation, baking oven intake stack are provided（312）With baking oven wind pipe（309）Connect oven body（310）And electricity
Heating heat exchanger（301）；
The electric heating heat exchanger（301）, electrical heating heat exchange pipeline（302）, electric heating heat exchanger wind turbine（303）, circulating fan
（308）, baking oven wind pipe（309）, baking oven intake stack（312）It is put together at side；The oven body（310）It is placed on
Other side；The oven body（310）It is made of nonmetallic materials.
2. the noninductive heated-air circulation oven of secondary heat exchange according to claim 1, it is characterised in that：The baking oven intake stack
（312）With baking oven wind pipe（309）It is made of nonmetallic materials.
3. the noninductive heated-air circulation oven of secondary heat exchange according to claim 1, which is characterized in that the baking oven intake stack
（312）With air inlet valve（304）And air inlet（305）, the air inlet valve（304）And air inlet（305）Positioned at circulating fan
（308）And electric heating heat exchanger（301）Between；The baking oven intake stack（312）With exhaust duct（306）And exhaust valve
（307）, the exhaust duct（306）And exhaust valve（307）Positioned at circulating fan（308）And oven body（310）Between.
4. the noninductive heated-air circulation oven of secondary heat exchange according to claim 3, it is characterised in that：The air inlet valve（304）
And exhaust valve（307）It is made of solenoid valve and manually-operated gate, its switch of solenoid valve control, manually-operated gate controls its aperture.
5. the noninductive heated-air circulation oven of secondary heat exchange according to claim 1, which is characterized in that the oven body（310）
It is made of air intake passage, service aisle and air-out passage；Air intake passage connects baking oven intake stack（312）, air-out passage connection
Baking oven wind pipe（309）.
6. the noninductive heated-air circulation oven of secondary heat exchange according to claim 1, it is characterised in that：The oven body（310）
With front door（402）The back door and（311）, it is separately mounted to drive end bearing bracket（401）And rear end cap（407）On.
7. the noninductive heated-air circulation oven of secondary heat exchange according to claim 6, which is characterized in that the back door（311）If
For relief port of exploding.
8. the noninductive heated-air circulation oven of secondary heat exchange according to claim 1, which is characterized in that the oven body（310）
Insulating layer including the multi-ply construction being configured to.
9. the noninductive heated-air circulation oven of secondary heat exchange according to claim 1, which is characterized in that the oven body（310）
It is divided into two sections of dismountable structures in length direction；The oven body（310）Bolt is connected by oven body（406）Two sections of connection
Oven body is to form an entirety.
10. the noninductive heated-air circulation oven of secondary heat exchange according to claim 1, it is characterised in that：The oven body（310）
Interior top is equipped with by upper movable regulating plate（419）With upper secured adjusted plate（421）The air distribution plate of composition；Upper movable regulating plate
（419）With upper secured adjusted plate（421）It is upper that there are many holes, pass through upper adjusting rod（420）Movable regulating plate in adjusting（419）It is right
Upper secured adjusted plate（421）Relative position to realize the adjusting of exhaust vent size, horizontal direction be oven body（310）Width
Spend direction；In oven body（310）Interior lower part is equipped with lower movable regulating plate（424）With lower secured adjusted plate（426）The cloth of composition
Gas plate, lower movable regulating plate（424）With lower secured adjusted plate（426）It is upper that there are many holes, pass through lower dolly bar（425）Under adjusting
Movable regulating plate（424）To lower secured adjusted plate（426）Relative position to realize air inlet aperture adjusting.
11. the noninductive heated-air circulation oven of secondary heat exchange according to claim 5, it is characterised in that：The oven body（310）
Multiple idler wheels assembly with logger guiding（415）, the multiple idler wheel assembly（415）It is respectively mounted at multiple U
Type holder（414）On, the multiple u-bracket（414）In oven body（310）Service aisle（412）In along oven body
Length direction is evenly distributed successively；The idler wheel assembly（415）Including idler wheel（422）And bushing（423）；The idler wheel（422）
Both ends pass through bushing（423）Mounted on u-bracket（414）In the groove at both ends；U-bracket（414）Bottom surface have very
Porous, the hole is for being connected to air intake passage（411）And service aisle（412）.
12. the noninductive heated-air circulation oven of secondary heat exchange according to claim 1, it is characterised in that：The oven body（310）
It is whole from width to wooden frame（408）, it is high to wooden frame（409）With long to wooden frame（410）The wooden frame mortise-tenon joint forming in three directions,
These wooden frames are as oven body（310）Supporting member.
13. the noninductive heated-air circulation oven of secondary heat exchange according to claim 12, it is characterised in that：The oven body
（310）Inner wall PTFE liner plates made of polytetrafluoroethylene (PTFE) plate（427）It constitutes；Oven body（310）Insulating layer include silicon
Sour aluminium sheet（428）And alumina silicate fibre（429）；Shell（430）For glass fibre reinforced plastic insulating plate；Oven body（310）From the inside to the outside successively
For PTFE liner plates（427）, silicate aluminum board（428）And alumina silicate fibre（429）And shell（430）；Pass through polytetrafluoroethylene (PTFE)
Bolt（431）PTFE liner plates（427）, silicate aluminum board（428）And alumina silicate fibre（429）It is fastened on shell（430）On；It is described
Shell（430）It is fastened on by nylon bolt on the wooden frame in three directions.
14. the noninductive heated-air circulation oven of secondary heat exchange according to claim 13, it is characterised in that：The oven body
（310）It further include upper cover plate（417）And side cover plate（418）；The upper cover plate（417）And side cover plate（418）For electrician's plate, and lead to
Nylon bolt is crossed to be fastened on the wooden frame of many places；Upper cover plate（417）And side cover plate（418）Same shell（430）Between have it is certain
Distance, so that it is guaranteed that oven body（310）Excessively high temperature is not will produce.
15. the noninductive heated-air circulation oven of secondary heat exchange according to claim 10, which is characterized in that the material of the adjustable plate
Material is ceramics.
16. the noninductive heated-air circulation oven of secondary heat exchange according to claim 1, which is characterized in that the electrical heating heat exchange
Device wind turbine（303）And circulating fan（308）With electric heating heat exchanger（301）Realize chain control, thus when starting to work, it must
Wind turbine must first be started, restart heater.
17. the noninductive heated-air circulation oven of secondary heat exchange according to claim 1, which is characterized in that the internal circulation system
It include the TT＆C system being made of platinum resistance, temperature measurer and overtemperature alarm execution circuit.
18. the noninductive heated-air circulation oven of secondary heat exchange according to claim 1, which is characterized in that the oven body（310）
Cavity include Cryocooler Temperature Closed Loop Control System, the Cryocooler Temperature Closed Loop Control System includes the temperature control platinum electricity for being installed on cavity stage casing
Resistance, temperature controller and zero cross fired silicon controlled module；The Cryocooler Temperature Closed Loop Control System adjusts temperature controller to heater（51）Plus
Automatically controlling for cavity temperature is realized in the adjusting of thermal power.
19. the noninductive heated-air circulation oven of secondary heat exchange according to claim 18, it is characterised in that：If the cooling of cavity
Rate is more than Temperature fall rate, passes through air inlet valve（304）And exhaust valve（307）To cavity supplements cold, discharge hot-air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210394392.5A CN103775059B (en) | 2012-10-17 | 2012-10-17 | Secondary heat exchange is noninductive heated-air circulation oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210394392.5A CN103775059B (en) | 2012-10-17 | 2012-10-17 | Secondary heat exchange is noninductive heated-air circulation oven |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103775059A CN103775059A (en) | 2014-05-07 |
| CN103775059B true CN103775059B (en) | 2018-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210394392.5A Expired - Fee Related CN103775059B (en) | 2012-10-17 | 2012-10-17 | Secondary heat exchange is noninductive heated-air circulation oven |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105346229A (en) * | 2015-11-19 | 2016-02-24 | 四川航达机电技术开发服务中心 | Circulating device for oven of printing machine |
| CN108106405A (en) * | 2018-01-15 | 2018-06-01 | 张家港炬弘板业有限公司 | A kind of cycling baking oven for being used to produce coil of strip |
| CN109901230B (en) * | 2019-04-02 | 2020-08-11 | 中国科学院地质与地球物理研究所 | Equipment for temperature correction and deep stratum environment simulation of induction logging instrument |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201122049Y (en) * | 2007-09-07 | 2008-09-24 | 上海中加电炉有限公司 | Heated air circulation baking oven |
| CN201141298Y (en) * | 2007-11-01 | 2008-10-29 | 大庆石油管理局 | Heat preserving structure for logger |
| CN202039835U (en) * | 2011-01-18 | 2011-11-16 | 中国海洋石油总公司 | Portable testing and scaling device applied in array induction well logger |
| CN203097876U (en) * | 2012-10-17 | 2013-07-31 | 中国石油集团长城钻探工程有限公司 | Double-heat exchange non-inductive hot air circulation oven |
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| CN103775059A (en) | 2014-05-07 |
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