CN107655581A - A kind of profound hypothermia gold iron thermocouple with thermometric ball - Google Patents
A kind of profound hypothermia gold iron thermocouple with thermometric ball Download PDFInfo
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- CN107655581A CN107655581A CN201710887438.XA CN201710887438A CN107655581A CN 107655581 A CN107655581 A CN 107655581A CN 201710887438 A CN201710887438 A CN 201710887438A CN 107655581 A CN107655581 A CN 107655581A
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- thermometric
- ball
- thermocouple
- thermometric ball
- axial cavity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
- G01K7/023—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples provided with specially adapted connectors
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- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
A kind of profound hypothermia gold iron thermocouple with thermometric ball, the left end opening of axial cavity is arranged with the thermometric ball of a heat conduction, the left end opening of axial cavity is the horn mouth gradually collapsed from left end to right-hand member vertically, the end face diameter of bell-mouthed big opening end is equal with the diameter of the thermometric ball, the end face diameter at bell-mouthed osculum end is less than the diameter of the thermometric ball, and bell-mouthed internal face is the conical surface；The left end of galvanic couple bar is arranged with the gland for being pressed on thermometric ball on the conical surface；Through hole is offered on the gland, one end of through hole is connected with the external world, the other end alignment thermometric ball of through hole, and the aperture of through hole is less than the diameter of thermometric ball；Thermocouple wire is coaxially equipped with axial cavity, the left end of low temperature glue stick is contradicted on thermometric ball, and the right-hand member of low temperature glue stick is contradicted on the sealing-plug；The left end of thermocouple wire is connected with thermometric ball；The right-hand member of thermocouple wire is through sealing-plug and compacting cap and stretches out.
Description
Technical field
The present invention relates to a kind of profound hypothermia gold iron thermocouple with thermometric ball.
Background technology
With the successful development and application of the development of domestic space technology, particularly Long March series thrust-augmented rocket, promote
The development of profound hypothermia (- 270 DEG C~0 DEG C) survey engineering.
To that using liquid hydrogen as the space power system of fuel and the thermometric of fueling system, should use with respective capabilities
Profound hypothermia thermocouple product, it is desirable to possess the features such as high measurement accuracy, high resistance to operating pressure, fast response time.
The profound hypothermia gold iron thermocouple product that the country uses at present, disclosure satisfy that the technological parameter of aerospace industry substantially
It is required that but actually use process, some defects also be present in thermocouple product.
When particularly measuring liquid hydrogen temperature, the material of low temperature glue DW-3 and even bar in thermocouple are due in profound hypothermia environment
Retractable property it is different, both amounts of contraction are different, it is easy in even bar inwall and the bonding of low temperature glue, low temperature glue and thermo wires glue
Place produces micro gap.It is easily permeable by these microcracks and hydrogen atom is the minimum material of nature, to thermometric thermo wires
Harmful effect is produced, causes that its caused thermoelectric voltage is smaller, and system response time is slow, response time length, reduces control
Precision；Meanwhile the leakage of liquid hydrogen adversely affects, phase there is also very big potential safety hazard to Aero-Space control engineering
Pass problem, it would be highly desirable to solve.
The content of the invention
To overcome defect present in background technology, the present invention provides a kind of profound hypothermia gold iron thermoelectricity with thermometric ball
It is even.
Technical proposal that the invention solves the above-mentioned problems is：
A kind of profound hypothermia gold iron thermocouple with thermometric ball, the thermocouple include galvanic couple bar, set in the galvanic couple bar
There is the axial cavity that two penetrates, and axial cavity wall is smooth；The galvanic couple bar is divided into thermometric section, spheroid section vertically
And expansion arc, and the diameter of the expansion arc is more than the diameter of the thermometric section, defines along where the thermometric section of galvanic couple bar axial direction
One end is left end, and one end where expansion arc is right-hand member；
The left end opening of the axial cavity is arranged with the thermometric ball of a heat conduction, and the surface light of the thermometric ball
It is sliding；The left end opening of the axial cavity is the horn mouth gradually collapsed from left end to right-hand member vertically, described bell-mouthed big
The end face diameter at mouth end is equal with the diameter of the thermometric ball, and the end face diameter at the bell-mouthed osculum end is less than the thermometric
The diameter of ball, and the bell-mouthed internal face is the conical surface；The left end of the galvanic couple bar, which is arranged with, to be used for the thermometric ball pressure
The tightly gland on the conical surface；Through hole is offered on the gland, one end of the through hole is connected with the external world, the through hole
The other end is directed at the thermometric ball, and the aperture of through hole is less than the diameter of the thermometric ball；
The right-end openings of the axial cavity are provided with sealing-plug, and are arranged with and are used for the sealing-plug outside the expansion arc
The compacting cap being pressed in the cavity；
Thermocouple wire is coaxially equipped with the axial cavity, and is filled out between the inwall of the thermocouple wire and the axial cavity
Filled with low temperature glue, the inwall of the thermocouple wire and the axial cavity is closely coupled by low temperature glue；The low temperature adhesive curing of filling
Into low temperature glue stick, the left end of the low temperature glue stick is contradicted on the thermometric ball, and the right-hand member of the low temperature glue stick is contradicted described
On sealing-plug；
The left end of thermocouple wire is connected with thermometric ball, forms measurement end；The right-hand member of thermocouple wire is through sealing-plug and is compacted cap simultaneously
Stretch out, and the thermocouple wire in the expansion arc is provided with housing, and the right-hand member of the housing run through sealing-plug,
Compacting cap simultaneously stretches out；The compacting cap is provided with the opening run through for the thermocouple wire, and bullet is coaxially provided with the opening
Spring, and the left end of the spring is fastened in the opening, the thermocouple wire coaxially runs through the spring.
Further, the expansion arc is externally provided with the first external screw thread, and the inwall of the compacting cap is provided with the first internal thread, institute
Compacting cap is stated to be spirally connected by the externally threaded cooperation of the first internal thread and first with the expansion arc.
Further, the clamp nut for external world's connection, the clamp nut and the ball are fixed with outside the spheroid section
Body section is fixedly connected.
Further, the spheroid section is provided with a circle snap ring, is provided with neck in the clamp nut, the spheroid section is with compressing
Nut is connected and fixed by the snap ring and the neck.
Further, the sealing-plug includes the axial direction part that extends in axial cavity and outside axial cavity and is sticked
Radial section in the right-end openings of axial cavity, the axial direction part are fixed at the center of the radial section；The external diameter of axial direction part
It is equal with the diameter of axial cavity, to seal the right-end openings of the axial cavity；The outer peripheral face of the radial section is contradicted in institute
On the inwall for stating compacting cap, to be compressed by the compacting cap.
Further, the left end of the measuring section is externally provided with the second external screw thread, and the inwall of the gland is provided with the second screw thread,
The gland is spirally connected with the measuring section by the externally threaded cooperation of the second internal thread and second.
Further, the thermometric ball is golden iron-nickel-chromium ball.
Further, the centre of sphere of ball, and the through hole and the axial cavity are measured described in the central axial alignment of the through hole
It is coaxially disposed.
Further, the measurement ball is provided with the jack for being used for inserting the thermocouple wire.
Beneficial effects of the present invention are mainly manifested in：
By the present invention in that the welding thermometric described in the measurement ball substitution background technology made of golden iron-nickel-chromium connects
Head, sealing property is both improved, and do not influence bearing capacity, improve the security of product, production process is simple, favorably
Promoted the use of in it.
Brief description of the drawings
Fig. 1 is the sectional view of the present invention.
Fig. 2 is the cooperation schematic diagram of the left end opening of axial cavity, thermometric ball and gland.
Embodiment
Referring to the drawings, a kind of profound hypothermia gold iron thermocouple with thermometric ball, the thermocouple includes galvanic couple bar 1, described
Axial cavity provided with two insertion in galvanic couple bar 1, and the wall of axial cavity is smooth；The galvanic couple bar 1 divides successively vertically
For thermometric section a, spheroid section 4 and expansion arc c, and the diameter of the expansion arc c is more than the diameter of the thermometric section a, defines along electricity
One end where the axial thermometric section a of even bar is left end, and one end where expansion arc c is right-hand member；
The left end opening of the axial cavity is arranged with the thermometric ball 10 of a heat conduction, and the surface of the thermometric ball 10
It is smooth；The left end opening of the axial cavity is the horn mouth 12 that is gradually collapsed from left end to right-hand member vertically, the horn mouth
The end face diameter of 12 big opening end is equal with the diameter of the thermometric ball 10, and the end face diameter at the osculum end of the horn mouth 12 is small
In the diameter of the thermometric ball 10, and the internal face of the horn mouth 12 is the conical surface；The left end of the galvanic couple bar 1, which is arranged with, to be used for
The gland 11 thermometric ball 10 being pressed on the conical surface；Through hole 13 is offered on the gland 11, the through hole 13
One end is connected with the external world, and the other end of the through hole 13 is directed at the thermometric ball 10, and the aperture of through hole 13 is less than the thermometric
The diameter of ball 10；Liquid nitrogen is contacted by through hole 13 with thermometric ball 10, adds measurement accuracy.
The right-end openings of the axial cavity are provided with sealing-plug 6, and are arranged with outside the expansion arc c for will be described close
Blocking 6 is pressed on the compacting cap 7 in the cavity；
Thermocouple wire 2 is coaxially equipped with the axial cavity, and between the inwall of the thermocouple wire 2 and the axial cavity
Filled with low temperature glue, the inwall of the thermocouple wire 2 and the axial cavity is closely coupled by low temperature glue；The low temperature glue of filling is consolidated
Low temperature glue stick 3 is melted into, the left end of the low temperature glue stick 3 is contradicted on the thermometric ball 10, and the right-hand member of the low temperature glue stick 10 supports
Touch on the sealing-plug 6；
The left end of thermocouple wire 2 is connected with thermometric ball 10, to form measurement end；The right-hand member of thermocouple wire 2 is through sealing-plug 6 and pressure
Real cap 7 simultaneously stretches out, and the thermocouple wire 2 in expansion arc c is provided with housing 5, and the right-hand member of the housing 5
Through sealing-plug 6 and compacting cap 7 and stretch out；
The compacting cap 7 is provided with the opening run through for the thermocouple wire 2, and spring 8, and institute are coaxially provided with the opening
The left end for stating spring 8 is fastened in the opening, and the thermocouple wire 2 coaxially runs through the spring 8；
The expansion arc c is externally provided with the first external screw thread, and the inwall of the compacting cap 7 is provided with the first internal thread, the pressure
Real cap 7 is spirally connected with the expansion arc c by the externally threaded cooperation of the first internal thread and first.
The clamp nut 4 for external world's connection is fixed with outside the spheroid section b, the compression spiral shell 4 and spheroid section b consolidates
Fixed connection.
The spheroid section b is provided with a circle snap ring, and neck, the spheroid section b and clamp nut are provided with the clamp nut 4
4 are connected and fixed by the snap ring and the neck.
The sealing-plug 6 includes the axial direction part that extends in axial cavity and outside axial cavity and is sticked axially logical
Radial section in the right-end openings of chamber, the axial direction part are fixed at the center of the radial section；The external diameter of axial direction part and axial direction
The diameter of cavity is equal, to seal the right-end openings of the axial cavity；The outer peripheral face of the radial section is contradicted in the compacting
On the inwall of cap 7, to be compressed by the compacting cap 7.
The left end of the measuring section a is externally provided with the second external screw thread, and the inwall of the gland 11 is provided with the second screw thread, described
The gland 11 and measuring section a is spirally connected by the externally threaded cooperation of the second internal thread and second.
The thermometric ball 10 is golden iron-nickel-chromium ball.
The centre of sphere of ball 10 is measured described in the central axial alignment of the through hole 13, and the through hole 13 and the axial cavity are same
Axle is set.
The measurement ball 10 is provided with the jack for being used for inserting the thermocouple wire 2.
Need to be polished its inwall before the installation of galvanic couple bar 1 and pickling is to keep smooth.Galvanic couple bar 1 is placed vertically, and
Thermocouple wire 2 is put into galvanic couple bar 1, thermocouple wire 2 should be fixed on the central axis of galvanic couple bar 1, and the connection of thermocouple wire 2 measures ball 10, and
Gland 11 is tightened to block measurement ball 10, then low temperature glue is injected into galvanic couple bar 1, after filling, whole device is put into and added
Hot stove carries out room temperature cooling, this process need to repeat 3-4 times in 60 DEG C or so ambient cures 8 hours afterwards.Low temperature glue is fully cured
Low temperature glue stick 3 is formed afterwards, and thermocouple wire 2, low temperature glue stick 3 and galvanic couple bar 1 are bonded into an entirety.Then, clamp nut 4 is consolidated
Surely it is set at spheroid section b, to be connected with external device；Fill in sealing-plug 6, put compacting cap 8, and by thermocouple wire 2 successively
Through sealing-plug 6, compacting cap 7 and spring 8.Tighten compacting cap 8, you can complete the assembling of thermocouple main part.
After the completion of assembling product, it is necessary to temperature measurement accuracy, overall sealing and response time etc. are detected in liquid hydrogen environment
Characteristic.If there is the problems such as thermometric termination is loosened, liquid hydrogen is revealed, tightening nuts 10 can be continued, and be put into again in liquid hydrogen environment
Detection, untill satisfactory technological parameter.
The present invention action principle be：
Two thermocouple wires 2 are typically equipped with existing galvanic couple bar, two thermocouple wires 2 are before galvanic couple bar 1 is penetrated, thermometric end
Two thermocouple wires 2 with the method for spot welding be welded together to form welding thermometric joint.
By the present invention in that the welding thermometric described in the measurement ball substitution background technology made of golden iron-nickel-chromium connects
Head, sealing property is both improved, and do not influence bearing capacity, improve the security of product, production process is simple, favorably
Promoted the use of in it.In the environment of cryogenic high pressure, avoid hydrogen atom and continue to permeate, harmful effect is produced to thermocouple wire, caused
Make its caused thermoelectric voltage smaller, reduce measurement accuracy, extend the service life of thermocouple wire.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection of the invention
Scope is not construed as being only limitted to the concrete form that embodiment is stated, protection scope of the present invention also includes art technology
Personnel according to present inventive concept it is conceivable that equivalent technologies mean.
Claims (9)
- A kind of 1. profound hypothermia gold iron thermocouple with thermometric ball, it is characterised in that：The thermocouple includes galvanic couple bar, the electricity Axial cavity provided with two insertion in even bar, and axial cavity wall is smooth；The galvanic couple bar is divided into thermometric vertically Section, spheroid section and expansion arc, and the diameter of the expansion arc is more than the diameter of the thermometric section, defines along galvanic couple bar axial direction thermometric One end where section is left end, and one end where expansion arc is right-hand member；The left end opening of the axial cavity is arranged with the thermometric ball of a heat conduction, and the surface of the thermometric ball is smooth；Institute The left end opening for stating axial cavity is the horn mouth gradually collapsed from left end to right-hand member vertically, the bell-mouthed big opening end End face diameter is equal with the diameter of the thermometric ball, and the end face diameter at the bell-mouthed osculum end is less than the straight of the thermometric ball Footpath, and the bell-mouthed internal face is the conical surface；The left end of the galvanic couple bar is arranged with for the thermometric ball to be pressed on into institute State the gland on the conical surface；Through hole is offered on the gland, one end of the through hole is connected with the external world, the other end of the through hole The thermometric ball is directed at, and the aperture of through hole is less than the diameter of the thermometric ball；The right-end openings of the axial cavity are provided with sealing-plug, and are arranged with outside the expansion arc for the sealing-plug to be compressed Compacting cap in the cavity；Thermocouple wire is coaxially equipped with the axial cavity, and is filled between the inwall of the thermocouple wire and the axial cavity The inwall of low temperature glue, the thermocouple wire and the axial cavity is closely coupled by low temperature glue；The low temperature glue of filling is solidified into low Warm glue stick, the left end of the low temperature glue stick are contradicted on the thermometric ball, and the right-hand member of the low temperature glue stick is contradicted in the sealing Beyond the Great Wall；The left end of thermocouple wire is connected with thermometric ball, forms measurement end；The right-hand member of thermocouple wire is through sealing-plug and compacting cap and outside Extension, and the thermocouple wire in expansion arc is provided with housing, and the right-hand member of the housing is through sealing-plug, compacting Cap simultaneously stretches out；The compacting cap is provided with the opening run through for the thermocouple wire, and spring is coaxially provided with the opening, and The left end of the spring is fastened in the opening, and the thermocouple wire coaxially runs through the spring.
- A kind of 2. profound hypothermia gold iron thermocouple with thermometric ball as claimed in claim 1, it is characterised in that：The expansion arc The first external screw thread is externally provided with, the inwall of the compacting cap is provided with the first internal thread, and the compacting cap passes through with the expansion arc First internal thread and the first externally threaded cooperation are spirally connected.
- A kind of 3. profound hypothermia gold iron thermocouple with thermometric ball as claimed in claim 2, it is characterised in that：The spheroid section The outer clamp nut being fixed with for external world's connection, the clamp nut are fixedly connected with the spheroid section.
- A kind of 4. profound hypothermia gold iron thermocouple with thermometric ball as claimed in claim 3, it is characterised in that：The spheroid section Provided with a circle snap ring, neck is provided with the clamp nut, the spheroid section passes through the snap ring and the card with clamp nut Groove connects and fixes.
- A kind of 5. profound hypothermia gold iron thermocouple with thermometric ball as claimed in claim 4, it is characterised in that：The sealing-plug Including extending to the axial direction part in axial cavity and outside axial cavity and the footpath that is sticked in the right-end openings of axial cavity To section, the axial direction part is fixed at the center of the radial section；The external diameter of axial direction part is equal with the diameter of axial cavity, with close Seal the right-end openings of the axial cavity；The outer peripheral face of the radial section is contradicted on the inwall of the compacting cap, with described Cap is compacted to compress.
- A kind of 6. profound hypothermia gold iron thermocouple with thermometric ball as claimed in claim 5, it is characterised in that：The measuring section Left end be externally provided with the second external screw thread, the inwall of the gland is provided with the second screw thread, and the gland passes through with the measuring section Second internal thread and the second externally threaded cooperation are spirally connected.
- A kind of 7. profound hypothermia gold iron thermocouple with thermometric ball as claimed in claim 6, it is characterised in that：The thermometric ball For golden iron-nickel-chromium ball.
- A kind of 8. profound hypothermia gold iron thermocouple with thermometric ball as claimed in claim 7, it is characterised in that：The through hole The centre of sphere of ball is measured described in central axial alignment, and the through hole is coaxially disposed with the axial cavity.
- A kind of 9. profound hypothermia gold iron thermocouple with thermometric ball as claimed in claim 8, it is characterised in that：The measurement ball It is provided with the jack for being used for inserting the thermocouple wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710887438.XA CN107655581B (en) | 2017-09-27 | 2017-09-27 | A kind of profound hypothermia gold iron thermocouple with thermometric ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710887438.XA CN107655581B (en) | 2017-09-27 | 2017-09-27 | A kind of profound hypothermia gold iron thermocouple with thermometric ball |
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| Publication Number | Publication Date |
|---|---|
| CN107655581A true CN107655581A (en) | 2018-02-02 |
| CN107655581B CN107655581B (en) | 2019-11-29 |
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| CN201710887438.XA Active CN107655581B (en) | 2017-09-27 | 2017-09-27 | A kind of profound hypothermia gold iron thermocouple with thermometric ball |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1278619A1 (en) * | 1985-01-16 | 1986-12-23 | Предприятие П/Я А-3759 | Method for manufacturing hot joint of thermocouple |
| CN2588345Y (en) * | 2002-09-12 | 2003-11-26 | 浙江春晖智能控制股份有限公司 | Temp. sensing agent filler for membrane box |
| CN101590455A (en) * | 2009-06-22 | 2009-12-02 | 施才军 | The gondola water faucet of self power generation light indicating water temperature |
| CN202614403U (en) * | 2012-03-29 | 2012-12-19 | 绍兴春晖自动化仪表有限公司 | Deep hypothermia thermocouple having high pressure-resisting performance and high precision |
| CN205426353U (en) * | 2016-03-08 | 2016-08-03 | 昆山优利德能源技术有限公司 | Gasifier high temperature thermocouple |
| CN207335898U (en) * | 2017-09-27 | 2018-05-08 | 浙江工业大学 | A kind of profound hypothermia gold iron thermocouple with thermometric ball |
-
2017
- 2017-09-27 CN CN201710887438.XA patent/CN107655581B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1278619A1 (en) * | 1985-01-16 | 1986-12-23 | Предприятие П/Я А-3759 | Method for manufacturing hot joint of thermocouple |
| CN2588345Y (en) * | 2002-09-12 | 2003-11-26 | 浙江春晖智能控制股份有限公司 | Temp. sensing agent filler for membrane box |
| CN101590455A (en) * | 2009-06-22 | 2009-12-02 | 施才军 | The gondola water faucet of self power generation light indicating water temperature |
| CN202614403U (en) * | 2012-03-29 | 2012-12-19 | 绍兴春晖自动化仪表有限公司 | Deep hypothermia thermocouple having high pressure-resisting performance and high precision |
| CN205426353U (en) * | 2016-03-08 | 2016-08-03 | 昆山优利德能源技术有限公司 | Gasifier high temperature thermocouple |
| CN207335898U (en) * | 2017-09-27 | 2018-05-08 | 浙江工业大学 | A kind of profound hypothermia gold iron thermocouple with thermometric ball |
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| CN107655581B (en) | 2019-11-29 |
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