CN207976231U - A kind of profound hypothermia gold iron thermocouple with annular groove - Google Patents
A kind of profound hypothermia gold iron thermocouple with annular groove Download PDFInfo
- Publication number
- CN207976231U CN207976231U CN201721248163.7U CN201721248163U CN207976231U CN 207976231 U CN207976231 U CN 207976231U CN 201721248163 U CN201721248163 U CN 201721248163U CN 207976231 U CN207976231 U CN 207976231U
- Authority
- CN
- China
- Prior art keywords
- low temperature
- thermocouple
- cavity
- temperature glue
- sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000002631 hypothermal effect Effects 0.000 title claims abstract description 18
- NPEWZDADCAZMNF-UHFFFAOYSA-N gold iron Chemical compound [Fe].[Au] NPEWZDADCAZMNF-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 239000004836 Glue Stick Substances 0.000 claims abstract description 26
- 239000003292 glue Substances 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000000047 product Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
A kind of profound hypothermia gold iron thermocouple with annular groove, the right-end openings of axial cavity are interior to be equipped with sealing-plug, and the compacting cap for being pressed on sealing-plug in cavity is arranged with outside expansion arc；Filled with the low temperature glue stick being made of low temperature glue between thermocouple wire and the inner wall of axial cavity, and the inner wall of thermocouple wire and axial cavity is closely coupled by low temperature glue stick；The low temperature glue of filling is solidified into low temperature glue stick, and the left end of low temperature glue stick runs through the left end of axial cavity, and the right end of low temperature glue stick contradicts on sealing-plug；The left end of thermocouple wire forms thermometric end through the left end of low temperature glue stick, and the right end of thermocouple wire through sealing-plug and compacting cap and extends outwardly, and the right end of housing through sealing-plug, compacting cap and extends outwardly；It is compacted cap to be equipped with for the perforative opening of thermocouple wire, is coaxially provided with spring in opening, and the left end of spring is fastened in opening, thermocouple wire coaxially runs through spring；Inner wall positioned at the axial cavity of expansion arc is equipped with several annular grooves.
Description
Technical field
The utility model is related to a kind of profound hypothermia gold iron thermocouple with annular groove.
Background technology
With the successful development and application of the development of domestic space technology, especially Long March series thrust-augmented rocket, push
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 that have the features such as high measurement accuracy, high resistance to operating pressure, fast response time.
Domestic profound hypothermia gold iron thermocouple product used at present, disclosure satisfy that the technological parameter of aerospace industry substantially
It is required that but actual use process, there is also some defects for thermocouple product.
When especially 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, the shrinkage of the two is different, it is easy in the bonding of even bar inner wall and low temperature glue, low temperature glue and thermo wires glue
Place generates micro gap.And hydrogen atom is the substance of nature minimum, and it is easily permeable by these microcracks, to thermometric thermo wires
Harmful effect is generated, causes the thermoelectric voltage that it is generated smaller, system response time is slow, and the response time is long, reduces control
Precision；Meanwhile there is also very big security risks for the leakage of liquid hydrogen, are adversely affected to aerospace control engineering, phase
Pass problem, it would be highly desirable to solve.
Invention content
To overcome defect present in background technology, the utility model to provide a kind of profound hypothermia gold iron thermoelectricity with annular groove
It is even.
The technical solution that the utility model solves the above problems is：
A kind of profound hypothermia gold iron thermocouple with annular groove, the thermocouple includes galvanic couple bar, is equipped in the galvanic couple bar
The axial cavity of both ends perforation, and axial cavity wall surface is smooth；The galvanic couple bar be divided into an axial direction thermometric section, sphere section and
Expansion arc, and the diameter of the expansion arc is more than the diameter of the thermometric section, defines along one where galvanic couple bar axial direction thermometric section
End is left end, and one end where expansion arc is right end；
It is equipped with sealing-plug in the right-end openings of the axial direction cavity, and is arranged with for by the sealing outside the expansion arc
Plug is pressed on the compacting cap in the cavity；
It is coaxially equipped with thermocouple wire in the axial direction cavity, and is filled out between the thermocouple wire and the inner wall of the axial cavity
Filled with the low temperature glue stick being made of low temperature glue, and the inner wall of the thermocouple wire and the axial cavity passes through the close phase of low temperature glue stick
Even；The low temperature glue of filling is solidified into low temperature glue stick, and the left end of the low temperature glue stick runs through the left end of the axial cavity, described low
The right end of warm glue stick contradicts on sealing-plug；
The left end of thermocouple wire forms thermometric end through the left end of low temperature glue stick, and the right end of thermocouple wire runs through sealing-plug and compacting
Cap simultaneously extends outwardly, and the thermocouple wire in expansion arc is equipped with housing, and the right end of the housing is through close
Blocking, compacting cap simultaneously extend outwardly；
The compacting cap, which is equipped with, supplies the perforative opening of the thermocouple wire, is coaxially provided with spring in the opening, and described
The left end of spring is fastened in the opening, and the thermocouple wire coaxially runs through the spring；
Inner wall positioned at the axial cavity of expansion arc is equipped with several annular grooves.
Further, the expansion arc is externally provided with external screw thread, and the inner wall of the compacting cap is equipped with internal thread, the compacting cap
It is spirally connected by internal thread and externally threaded cooperation 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, for the sphere section equipped with a circle snap ring, the clamp nut is interior to be equipped with card slot, the sphere section and compression
Nut is connected and fixed by the snap ring and the card slot.
Further, the sealing-plug includes the axial direction part extended 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 outer 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 peripheral 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 annular groove is rectangular channel or dovetail groove.
Further, the inner wall for being located at the axial cavity of expansion arc is equipped with 4 annular grooves.
The beneficial effects of the utility model are mainly manifested in：
Annular groove increases the contact area of low temperature glue and axial cavity, and the annular groove of the utility model setting had both improved sealing
Performance, and bearing capacity is not influenced, the safety of product is improved, production process is simple, is conducive to it and promotes the use of.
Description of the drawings
Fig. 1 is the sectional view of the utility model.
Specific implementation mode
With reference to attached drawing, a kind of profound hypothermia gold iron thermocouple with annular groove, the thermocouple includes galvanic couple bar 1, the electricity
Axial cavity equipped with both ends perforation in even bar 1, and axial cavity wall surface is smooth；The galvanic couple bar 1 is divided into survey in an axial direction
Temperature 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 galvanic couple bar
One end where axial thermometric section a is left end, and one end where expansion arc c is right end；
It is equipped with sealing-plug 6 in the right-end openings of the axial direction cavity, and is arranged with 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 in the axial direction cavity, and between the thermocouple wire 2 and the inner wall of the axial cavity
Filled with the low temperature glue stick being made of low temperature glue, and the inner wall of the thermocouple wire 2 and the axial cavity is tight by low temperature glue stick
It is close to be connected；The left end of the low temperature glue stick 3 is through the left end of the axial cavity, and the right end conflict of the low temperature glue stick 3 is close
On blocking 6；
The left end of thermocouple wire 2 forms thermometric end through the left end of low temperature glue stick 3, and the right end of thermocouple wire 2 runs through 6 He of sealing-plug
Compacting cap 7 simultaneously extends outwardly, and the thermocouple wire 2 in expansion arc c is equipped with housing 5, and the right side of the housing 5
End is through sealing-plug 6 and compacting cap 7 and extends outwardly；
The compacting cap 7, which is equipped with, supplies the 2 perforative opening of thermocouple wire, and spring 8, and institute are coaxially provided in 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；
Inner wall positioned at the axial cavity of expansion arc c is equipped with several annular grooves 14.Such as 4 annular grooves can be set
14。
The expansion arc c is externally provided with external screw thread, and the inner wall of the compacting cap 7 is equipped with internal thread, the compacting cap 7 and institute
Expansion arc c is stated to be spirally connected by internal thread and externally threaded cooperation.
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 is solid
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 in 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 outer 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 peripheral 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 annular groove 14 is rectangular channel or dovetail groove.
It needs to be polished its inner wall before the installation of galvanic couple bar 1 and pickling is to keep smooth.Two are equipped in galvanic couple bar 1
Thermocouple wire 2, before penetrating galvanic couple bar 1, the method for two spot welding of thermocouple wire 2 of thermometric end welds together two thermocouple wires 2；
Galvanic couple bar 1 is placed vertically, and thermocouple wire 2 is put into galvanic couple bar 1, and thermocouple wire 2 should be fixed on 1 central axis of galvanic couple bar, will be electric
After the right-end openings of even bar 1 are sealed with plug, then low temperature glue is injected into galvanic couple bar 1.After filling, whole device is put into
Heating furnace carried out room temperature cooling, this process need to repeat 3-4 times later in 60 DEG C or so ambient cures 8 hours.Low temperature glue is completely solid
Low temperature glue stick 3 is formed after change, thermocouple wire 2, low temperature glue stick 3 and galvanic couple bar 1 are bonded into an entirety.Then, by clamp nut 4
Fixation is set at sphere section b, to be connect with external device；Plug is dismantled, sealing-plug 6 is filled in, puts on compacting cap 8, and will
Thermocouple wire 2 sequentially passes 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 detect temperature measurement accuracy, whole leakproofness, the spies such as response time in liquid hydrogen environment
Property.
The action principle of the utility model is：
Low temperature glue stick is formed by low temperature glue, and annular groove increases the contact area of low temperature glue and axial cavity, improves sealing
Performance, and bearing capacity is not influenced, the safety of product is improved, production process is simple, is conducive to it and promotes the use of.
It in the environment of cryogenic high pressure, avoids hydrogen atom and continues to permeate, harmful effect is generated to thermocouple wire, the thermoelectric for causing it to generate
Pressure is smaller, reduces measurement accuracy, extends the service life of thermocouple wire.
Content described in this specification embodiment is only enumerating for the way of realization conceived to utility model, 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 (7)
1. a kind of profound hypothermia gold iron thermocouple with annular groove, it is characterised in that：The thermocouple includes galvanic couple bar, the galvanic couple
Axial cavity equipped with both ends perforation in bar, and axial cavity wall surface is smooth；The galvanic couple bar be divided into an axial direction thermometric 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 section
The one end at place is left end, and one end where expansion arc is right end；
It is equipped with sealing-plug in the right-end openings of the axial direction cavity, and is arranged with for by the sealing-plug pressure outside the expansion arc
The tightly compacting cap in the cavity；
It is coaxially equipped with thermocouple wire in the axial direction cavity, and is filled between the thermocouple wire and the inner wall of the axial cavity
The low temperature glue stick being made of low temperature glue, and the inner wall of the thermocouple wire and the axial cavity is closely coupled by low temperature glue stick；
The low temperature glue of filling is solidified into low temperature glue stick, and the left end of the low temperature glue stick is through the left end of the axial cavity, the low temperature
The right end of glue stick contradicts on sealing-plug；
The left end of thermocouple wire forms thermometric end through the left end of low temperature glue stick, and the right end of thermocouple wire through sealing-plug and is compacted cap simultaneously
Extend outwardly, and the thermocouple wire in the expansion arc is equipped with housing, and the right end of the housing through sealing-plug,
Compacting cap simultaneously extends outwardly；
The compacting cap, which is equipped with, supplies the perforative opening of the thermocouple wire, and spring, and the spring are coaxially provided in the opening
Left end be fastened in the opening, the thermocouple wire coaxially run through the spring；
Inner wall positioned at the axial cavity of expansion arc is equipped with several annular grooves.
2. a kind of profound hypothermia gold iron thermocouple with annular groove as described in claim 1, it is characterised in that：Outside the expansion arc
Equipped with external screw thread, the inner wall of the compacting cap is equipped with internal thread, and the compacting cap and the expansion arc are by internal thread and outside
The cooperation of screw thread is spirally connected.
3. a kind of profound hypothermia gold iron thermocouple with annular groove as claimed in claim 2, it is characterised in that：Outside the sphere section
It is fixed with the clamp nut for external world's connection, the clamp nut is fixedly connected with the sphere section.
4. a kind of profound hypothermia gold iron thermocouple with annular groove as claimed in claim 3, it is characterised in that：The sphere section is set
There is a circle snap ring, card slot is equipped in the clamp nut, the sphere section passes through the snap ring and the card slot with clamp nut
It connects and fixes.
5. a kind of profound hypothermia gold iron thermocouple with annular groove as claimed in claim 4, it is characterised in that：The sealing-plug packet
Include the axial direction part extended in axial cavity and outside axial cavity and the radial direction that is sticked in the right-end openings of axial cavity
Section, the axial direction part are fixed at the center of the radial section；The outer diameter of axial direction part is equal with the axial diameter of cavity, with sealing
The right-end openings of the axial direction cavity；The peripheral surface of the radial section contradicts on the inner wall of the compacting cap, with by the pressure
Real cap compresses.
6. a kind of profound hypothermia gold iron thermocouple with annular groove as claimed in claim 5, it is characterised in that：The annular groove is square
Shape slot or dovetail groove.
7. a kind of profound hypothermia gold iron thermocouple with annular groove as claimed in claim 6, it is characterised in that：Positioned at expansion arc
The inner wall of the axial direction cavity is equipped with 4 annular grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721248163.7U CN207976231U (en) | 2017-09-27 | 2017-09-27 | A kind of profound hypothermia gold iron thermocouple with annular groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721248163.7U CN207976231U (en) | 2017-09-27 | 2017-09-27 | A kind of profound hypothermia gold iron thermocouple with annular groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207976231U true CN207976231U (en) | 2018-10-16 |
Family
ID=63770803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721248163.7U Expired - Fee Related CN207976231U (en) | 2017-09-27 | 2017-09-27 | A kind of profound hypothermia gold iron thermocouple with annular groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207976231U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202019106737U1 (en) * | 2019-12-03 | 2021-03-04 | Thermo Sensor Gmbh | Sealed temperature sensor |
-
2017
- 2017-09-27 CN CN201721248163.7U patent/CN207976231U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202019106737U1 (en) * | 2019-12-03 | 2021-03-04 | Thermo Sensor Gmbh | Sealed temperature sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181016 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |