CN207335898U - 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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- CN207335898U CN207335898U CN201721253012.0U CN201721253012U CN207335898U CN 207335898 U CN207335898 U CN 207335898U CN 201721253012 U CN201721253012 U CN 201721253012U CN 207335898 U CN207335898 U CN 207335898U
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- thermometric
- ball
- thermocouple
- thermometric ball
- left end
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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 end 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 end of low temperature glue stick is contradicted on the sealing-plug；The left end of thermocouple wire is connected with thermometric ball；The right end of thermocouple wire is through sealing-plug and compacting cap and stretches out.
Description
Technical field
It the utility model is related to a kind of profound hypothermia gold iron thermocouple with thermometric ball.
Background technology
With the development of domestic space technology, the particularly successful development of Long March series thrust-augmented rocket and application, 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 actual use process, also there are some defects for 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 inner wall 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 material of nature minimum, to thermometric thermo wires
Harmful effect is produced, causes the thermoelectric voltage that it is produced smaller, system response time is slow, and response time length, reduces control
Precision；Meanwhile the leakage of liquid hydrogen adversely affects aerospace control engineering, phase there is also very big security risk
Pass problem, it would be highly desirable to solve.
The content of the invention
To overcome defect present in background technology, the utility model provides a kind of profound hypothermia gold iron heat with thermometric ball
Galvanic couple.
The technical solution that the utility model solves the above problems is：
A kind of profound hypothermia gold iron thermocouple with thermometric ball, the thermocouple include galvanic couple bar, are set in the galvanic couple bar
There is the axial cavity that two penetrates through, and axial cavity wall is smooth；The galvanic couple bar is divided into thermometric section, sphere section vertically
And expansion arc, and the diameter of the expansion arc is more than the diameter of the thermometric section, defines along where galvanic couple bar axial direction thermometric section
One end is left end, and one end where expansion arc is right end；
The left end opening of the axial direction 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 direction cavity is the horn mouth gradually collapsed from left end to right end 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 direction cavity are equipped 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 direction cavity, and is filled out between the inner wall of the thermocouple wire and the axial cavity
Filled with low temperature glue, the inner wall 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 end 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 end of thermocouple wire is through sealing-plug and is compacted cap simultaneously
Stretch out, and the thermocouple wire in the expansion arc is equipped with housing, and the right end of the housing run through sealing-plug,
Compacting cap simultaneously stretches out；The compacting cap, which is equipped with, supplies the perforative opening of 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 inner wall of the compacting cap is equipped 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 sphere section
Body section is fixedly connected.
Further, the sphere section is equipped with a circle snap ring, is equipped with card slot in the clamp nut, the sphere section is with compressing
Nut is connected and fixed by the snap ring and the card slot.
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 outside 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 circumferential surface of the radial section is contradicted in institute
On the inner wall 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 inner wall of the gland is equipped 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 equipped with the jack for being used for being inserted into the thermocouple wire.
The beneficial effects of the utility model are mainly manifested in：
The welding described in measurement ball substitution background technology that the utility model is made by using golden iron-nickel-chromium is surveyed
Warm connector, not only improves sealing performance, but also does not influence bearing capacity, improves the security of product, and production process is simple,
Be conducive to it to promote the use of.
Brief description of the drawings
Fig. 1 is the sectional view of the utility model.
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 equipped with two perforation 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, sphere 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 end；
The left end opening of the axial direction 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 direction cavity is the horn mouth 12 that is gradually collapsed from left end to right end 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 direction cavity are equipped with sealing-plug 6, and are arranged with that be used for will be described close outside the expansion arc c
Blocking 6 is pressed on the compacting cap 7 in the cavity；
Thermocouple wire 2 is coaxially equipped with the axial direction cavity, and between the inner wall of the thermocouple wire 2 and the axial cavity
Filled with low temperature glue, the inner wall 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 end 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 end 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 equipped with housing 5, and the right end of the housing 5
Through sealing-plug 6 and compacting cap 7 and stretch out；
The compacting cap 7, which is equipped with, supplies the 2 perforative opening of thermocouple wire, 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 inner wall of the compacting cap 7 is equipped 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 sphere section b, the compression spiral shell 4 and sphere section b consolidates
Fixed connection.
The sphere section b is equipped with a circle snap ring, and card slot, the sphere section b and clamp nut are equipped with the clamp nut 4
4 are connected and fixed by the snap ring and the card slot.
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 outside diameter and axial direction of axial direction part
The diameter of cavity is equal, to seal the right-end openings of the axial cavity；The outer circumferential surface of the radial section is contradicted in the compacting
On the inner wall 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 inner wall of the gland 11 is equipped 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
Axis is set.
The measurement ball 10 is equipped with the jack for being used for being inserted into the thermocouple wire 2.
Need to be polished its inner wall 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 1 central axis of galvanic couple bar, 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 is added
Hot stove carries out room temperature cooling afterwards when 60 DEG C or so ambient cures 8 are small, this process need to repeat 3-4 times.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 sphere section b, to be connected with external device；Fill in sealing-plug 6, put on 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 leakproofness and response time etc. are detected in liquid hydrogen environment
Characteristic.If there is the problems such as thermometric termination loosens, 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 action principle of the utility model is：
Two thermocouple wires 2 are generally 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 connector.
The welding described in measurement ball substitution background technology that the utility model is made by using golden iron-nickel-chromium is surveyed
Warm connector, not only improves sealing performance, but also does not influence bearing capacity, improves the security of product, and production process is simple,
Be conducive to it to promote the use of.In the environment of cryogenic high pressure, avoid hydrogen atom and continue to permeate, bad shadow is produced to thermocouple wire
Ring, cause the thermoelectric voltage that it is produced 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 utility model design, this practicality is new
The protection domain of type is not construed as being only limitted to the concrete form that embodiment is stated, the scope of protection of the utility model is also wrapped
Include those skilled in the art according to the utility model design 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 equipped with two perforation in even bar, and axial cavity wall is smooth；The galvanic couple bar is divided into thermometric vertically Section, sphere 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 end；The left end opening of the axial direction 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 end 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 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 direction cavity are equipped 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 direction cavity, and is filled between the inner wall of the thermocouple wire and the axial cavity The inner wall 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 end 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 end of thermocouple wire is through sealing-plug and compacting cap and outside Extension, and the thermocouple wire in expansion arc is equipped with housing, and the right end of the housing is through sealing-plug, compacting Cap simultaneously stretches out；The compacting cap, which is equipped with, supplies the perforative opening of 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 inner wall of the compacting cap is equipped 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 sphere section The outer clamp nut being fixed with for external world's connection, the clamp nut are fixedly connected with the sphere section.
- A kind of 4. profound hypothermia gold iron thermocouple with thermometric ball as claimed in claim 3, it is characterised in that：The sphere section Equipped with a circle snap ring, card slot is equipped with the clamp nut, the sphere 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 outside 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 circumferential surface of the radial section is contradicted on the inner wall 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 inner wall of the gland is equipped 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 equipped with the jack for being used for being inserted into the thermocouple wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721253012.0U CN207335898U (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 |
|---|---|---|---|
| CN201721253012.0U CN207335898U (en) | 2017-09-27 | 2017-09-27 | A kind of profound hypothermia gold iron thermocouple with thermometric ball |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207335898U true CN207335898U (en) | 2018-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721253012.0U Withdrawn - After Issue CN207335898U (en) | 2017-09-27 | 2017-09-27 | A kind of profound hypothermia gold iron thermocouple with thermometric ball |
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| CN (1) | CN207335898U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107655581A (en) * | 2017-09-27 | 2018-02-02 | 浙江工业大学 | A kind of profound hypothermia gold iron thermocouple with thermometric ball |
-
2017
- 2017-09-27 CN CN201721253012.0U patent/CN207335898U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107655581A (en) * | 2017-09-27 | 2018-02-02 | 浙江工业大学 | A kind of profound hypothermia gold iron thermocouple with thermometric ball |
| CN107655581B (en) * | 2017-09-27 | 2019-11-29 | 浙江工业大学 | A kind of profound hypothermia gold iron thermocouple with thermometric ball |
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Granted publication date: 20180508 Effective date of abandoning: 20191129 |