CN105115615B - A kind of quake-proof type high-precision bimetallic thermometer - Google Patents
A kind of quake-proof type high-precision bimetallic thermometer Download PDFInfo
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- CN105115615B CN105115615B CN201510504960.6A CN201510504960A CN105115615B CN 105115615 B CN105115615 B CN 105115615B CN 201510504960 A CN201510504960 A CN 201510504960A CN 105115615 B CN105115615 B CN 105115615B
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- drainage tube
- temperature
- sensing element
- watchcase
- protection pipe
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Abstract
The invention discloses a kind of quake-proof type high-precision bimetallic thermometers, comprising: the inside of watchcase, protection pipe, scale, pointer, needle pivot and temperature-sensing element, watchcase is equipped with accommodating chamber；Scale and pointer are installed in accommodating chamber, and pointer is mounted on one end of needle pivot, and the other end of needle pivot is connect with temperature-sensing element；Protection pipe is connect with watchcase, and drainage tube is equipped in protection pipe, and is reserved with gap between protection pipe and drainage tube and is formed working chamber；Drainage tube it is closed at one end, the other end open wide；The periphery of drainage tube is equipped with the external thread groove that coiled coil is carried out along drainage tube length direction；Temperature-sensing element is arranged in working chamber, and temperature-sensing element is formed by bimetal leaf along the vallecular cavity helically coiling of external thread groove, and temperature-sensing element can carry out radial and axial free extension in the vallecular cavity of external thread groove.Quake-proof type high-precision bimetallic thermometer provided by the present invention has measuring accuracy height, the good advantage of shock-proof effect.
Description
Technical field
The present invention relates to instrument appliance technical field more particularly to a kind of quake-proof type high-precision bimetallic thermometers.
Background technique
Bimetallic thermometer is a kind of on-site test instrument for measuring medium and low temperature, can directly measure various production processes
In -80 DEG C -+500 DEG C within the scope of liquid vapour and gas medium temperature.The main element of industrial bimetallic thermometer is one
It is a to be forced together the multilayered metal film of composition with two or more metal film stacks, it is swollen when temperature changes using two kinds of different metals
The different principle work of swollen degree.During the work time, pointer rotation is driven when the expanded by heating of one end, work instrument is just shown
The temperature value that thermoelectrical potential is answered out.Currently, existing bimetallic thermometer measuring accuracy is lower in the market, earthquake-proof function also compared with
Difference is unable to satisfy high precision measurement requirement.
Summary of the invention
Technology based on the above background, the present invention propose a kind of quake-proof type high-precision bi-metal temperature
Meter, the bimetallic thermometer measuring accuracy is high, and has excellent shatter-proof function.
The invention proposes a kind of quake-proof type high-precision bimetallic thermometers, comprising: watchcase, protection pipe, scale, pointer,
Needle pivot and temperature-sensing element, in which:
The inside of watchcase is equipped with accommodating chamber；Scale and pointer are installed in accommodating chamber, and scale is located at the lower section of pointer,
Pointer is mounted on one end of needle pivot, and the other end of needle pivot passes through accommodating chamber and connect with temperature-sensing element；
Protection pipe is connect with watchcase, and drainage tube, and the outer peripheral surface of the inner peripheral surface of protection pipe and drainage tube are equipped in protection pipe
Between be reserved with gap formed working chamber；Working chamber is equipped with close to one end of watchcase and supplies far from the closed at one end of watchcase, working chamber
The connecting hole that needle pivot passes through, one end in working chamber far from watchcase are fixedly installed with retainer plate；
Drainage tube it is closed at one end, the other end opens wide, and the end of the closed end of the end face and protection pipe of drainage tube open end
Face flushes；
The periphery of drainage tube is equipped with the external thread groove that coiled coil is carried out along drainage tube length direction；
Temperature-sensing element is arranged in working chamber, and temperature-sensing element is connect far from one end of needle pivot with retainer plate；Temperature-sensing element
It is formed by bimetal leaf along the vallecular cavity helically coiling of external thread groove, and temperature-sensing element can carry out diameter in the vallecular cavity of external thread groove
To the free extension with axial direction.
Preferably, the length of drainage tube is less than or equal to the helical length of temperature-sensing element.
Preferably, drainage tube side wall close to closed end side be equipped with reflux branch pipe, and flow back branch pipe outlet be located at draw
The top of flow tube open end.
Preferably, reflux branch pipe is located in working chamber, and the outlet for the branch pipe that flows back is located at the side wall of protection pipe.
Preferably, the inner peripheral surface of drainage tube is equipped with the internal thread groove that coiled coil is carried out along drainage tube length direction, and
Internal thread groove is recessed from external thread groove to the inner peripheral surface of drainage tube and is formed.
Preferably, protection pipe is the inward-facing circumferential surface progress spiral depression institute shape in periphery along outer tube length direction by protection pipe
At screwed pipe.
Preferably, the width of bimetal leaf used by temperature-sensing element is less than the width of external thread groove vallecular cavity.
Preferably, scale is fixed in accommodating chamber by sealing clamping ring.
Preferably, watchcase includes upper housing, liner shell and lower case, and liner shell is located inside lower case and matches with lower sealing
The accommodating chamber for forming sealing is closed, also, the opening edge of liner shell is pressed on sealing clamping ring for compressing to sealing clamping ring；
Upper housing is located at the outside of lower case and connect with lower case.
Preferably, watchcase is equipped with the interconnecting piece for connecting protection pipe.
Preferably, retainer plate is made by Heat Conduction Material.
In the present invention, by the way that drainage tube is arranged in protection pipe, measured medium is introduced into using the open end of drainage tube
In drainage tube so that be in inside and outside temperature-sensing element by measured medium coat state, thus increase temperature-sensing element with
The contact area of measured medium, to achieve the purpose that the accurate testing degree and the sensitivity that improve temperature-sensing element；And due to this hair
The periphery of drainage tube in bright is equipped with the external thread groove that coiled coil is carried out along drainage tube length direction, and temperature-sensing element is by bimetallic
Piece is formed along the vallecular cavity helically coiling of external thread groove, and temperature-sensing element can be carried out in the vallecular cavity of external thread groove it is radial and axial
Free extension；It follows that drainage tube has good supporting role to the spiral of temperature-sensing element, to improve temperature-sensitive member
Ability that part is shatter-proof.
In conclusion quake-proof type high-precision bimetallic thermometer provided by the present invention has, measuring accuracy is high, shatter-proof effect
The good advantage of fruit, and also have the advantages that fast response time, small in size, the linearity is good, more stable.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of quake-proof type high-precision bimetallic thermometer proposed by the present invention.
Specific embodiment
In the following, technical solution of the present invention is described in detail by specific embodiment.
As shown in FIG. 1, FIG. 1 is a kind of structural schematic diagrams of quake-proof type high-precision bimetallic thermometer proposed by the present invention.
Referring to Fig.1, a kind of quake-proof type high-precision bimetallic thermometer that the embodiment of the present invention proposes, comprising: watchcase 1 is protected
Pillar 2, scale 3, pointer 4, needle pivot 5 and temperature-sensing element 6, in which:
Watchcase 1 is equipped with the interconnecting piece 12 for connecting protection pipe 2, and the inside of watchcase 1 is equipped with accommodating chamber；Scale 3 and refer to
Needle 4 is installed in accommodating chamber, and scale 3 is located at the lower section of pointer 4, and scale 3 is fixed on accommodating chamber by sealing clamping ring 11
Interior, pointer 4 is mounted on one end of needle pivot 5, and the other end of needle pivot 5 passes through accommodating chamber and connect with temperature-sensing element 6；
Protection pipe 2 is connect with watchcase 1, and drainage tube 7, and the inner peripheral surface of protection pipe 2 and drainage tube 7 are equipped in protection pipe 2
It is reserved with gap between outer peripheral surface and forms working chamber 8；Working chamber 8 is closed at one end far from watchcase 1, and working chamber 8 is close to watchcase 1
One end is equipped with the connecting hole passed through for needle pivot 5, and one end far from watchcase 1 is fixedly installed with retainer plate 9 in working chamber 8, fixed
Circle 9 is made by Heat Conduction Material；
Drainage tube 7 it is closed at one end, the other end opens wide, and the closed end of the end face of 7 open end of drainage tube and protection pipe 2
End face；7 side wall of drainage tube is equipped with reflux branch pipe 10 close to the side of closed end, and the outlet for the branch pipe 10 that flows back is located at drainage
The top of 7 open end of pipe, reflux branch pipe 10 are located in working chamber 8, and the outlet of reflux branch pipe 10 is located at the side wall of protection pipe 2；It is logical
The setting for crossing reflux branch pipe 10 can be such that measured medium is flowed in drainage tube 7, to improve the precision of test.
The periphery of drainage tube 7 is equipped with the external thread groove that coiled coil is carried out along 7 length direction of drainage tube；Temperature-sensing element 6 is set
It sets in working chamber 8, the one end of temperature-sensing element 6 far from needle pivot 5 is connect with retainer plate 9；Temperature-sensing element 6 by bimetal leaf along
The vallecular cavity helically coiling of external thread groove forms, and the helical length of temperature-sensing element 6 is more than or equal to the length of drainage tube 7, temperature-sensitive member
Part 6 can carry out radial and axial free extension in the vallecular cavity of external thread groove；Since drainage tube 7 is to the spiral of temperature-sensing element 6
With good supporting role, to improve the shatter-proof ability of temperature-sensing element 6.
In the present embodiment, the inner peripheral surface of drainage tube 7 is equipped with the internal screw thread that coiled coil is carried out along 7 length direction of drainage tube
Slot, and internal thread groove is recessed from external thread groove to the inner peripheral surface of drainage tube 7 and is formed；Protection pipe 2 is along outer tube length direction by protecting
The inward-facing circumferential surface in the periphery of pillar 2 carries out spiral depression and is formed by screwed pipe；By the design of this structure, quilt can be increased
The contact area of medium and tube wall is surveyed, and then improves measuring accuracy.
In addition, the watchcase 1 in this implementation includes upper housing in order to improve the sealing performance of watchcase 1 and anti-deformation
101, liner shell 102 and lower case 103, liner shell 102 are located at 103 inside of lower case and cooperatively form the appearance of sealing with lower sealing
Receive chamber, also, the opening edge of liner shell 102 is pressed on sealing clamping ring 11 for compressing to sealing clamping ring 11；Upper housing
101 are located at the outside of lower case 103 and connect with lower case 103.
The present invention is to work in this way, and measured medium is introduced into drainage tube 7 using the open end of drainage tube 7, so that sense
The state coated by measured medium is in inside and outside warm element 6, to increase contact of the temperature-sensing element 6 with measured medium
Area, to achieve the purpose that the accurate testing degree and the sensitivity that improve temperature-sensing element 6.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of quake-proof type high-precision bimetallic thermometer characterized by comprising watchcase (1), protection pipe (2), scale (3),
Pointer (4), needle pivot (5) and temperature-sensing element (6), in which:
The inside of watchcase (1) is equipped with accommodating chamber；Scale (3) and pointer (4) are installed in accommodating chamber, and scale (3) is located at finger
The lower section of needle (4), pointer (4) are mounted on one end of needle pivot (5), and the other end of needle pivot (5) passes through accommodating chamber and temperature-sensitive member
Part (6) connection；
Protection pipe (2) is connect with watchcase (1), is equipped with drainage tube (7) in protection pipe (2), and the inner peripheral surface of protection pipe (2) and drainage
It manages and is reserved with gap formation working chamber (8) between the outer peripheral surface of (7)；Working chamber (8) is closed at one end far from watchcase (1), work
Chamber (8) is equipped with the connecting hole passed through for needle pivot (5) close to the one end of watchcase (1), the one of separate watchcase (1) in working chamber (8)
End is fixedly installed with retainer plate (9)；
Drainage tube (7) it is closed at one end, the other end opens wide, and the closed end of the end face of drainage tube (7) open end and protection pipe (2)
End face；
The periphery of drainage tube (7) is equipped with the external thread groove that coiled coil is carried out along drainage tube (7) length direction；
Temperature-sensing element (6) setting is in working chamber (8), and temperature-sensing element (6) one end and retainer plate (9) far from needle pivot (5) are even
It connects；Temperature-sensing element (6) is formed by bimetal leaf along the vallecular cavity helically coiling of external thread groove, and temperature-sensing element (6) is in external screw thread
Radial and axial free extension can be carried out in the vallecular cavity of slot；
Drainage tube (7) side wall close to closed end side be equipped with reflux branch pipe (10), and flow back branch pipe (10) outlet be located at draw
The top of flow tube (7) open end；
Reflux branch pipe (10) is located in working chamber (8), and the outlet of reflux branch pipe (10) is located at the side wall of protection pipe (2)；
The inner peripheral surface of drainage tube (7) is equipped with the internal thread groove that coiled coil is carried out along drainage tube (7) length direction, and internal screw thread
Slot is recessed from external thread groove to the inner peripheral surface of drainage tube (7) and is formed.
2. quake-proof type high-precision bimetallic thermometer according to claim 1, which is characterized in that the length of drainage tube (7)
Less than or equal to the helical length of temperature-sensing element (6).
3. quake-proof type high-precision bimetallic thermometer according to claim 1, which is characterized in that protection pipe (2) is along outer
Length of tube direction carries out spiral depression by the inward-facing circumferential surface in periphery of protection pipe (2) and is formed by screwed pipe.
4. quake-proof type high-precision bimetallic thermometer according to claim 1, which is characterized in that temperature-sensing element (6) is adopted
The width of bimetal leaf is less than the width of external thread groove vallecular cavity.
5. quake-proof type high-precision bimetallic thermometer according to claim 1, which is characterized in that scale (3) passes through sealing
Pressing ring (11) is fixed in accommodating chamber；Retainer plate (9) is made by Heat Conduction Material.
6. quake-proof type high-precision bimetallic thermometer according to claim 5, which is characterized in that watchcase (1) includes upper casing
Body (101), liner shell (102) and lower case (103), liner shell (102) are located at lower case (103) inside and cooperate with lower sealing
The accommodating chamber of sealing is formed, also, the opening edge of liner shell (102) is pressed on sealing clamping ring (11) for sealing clamping ring
(11) it is compressed；Upper housing (101) is located at the outside of lower case (103) and connect with lower case (103).
7. quake-proof type high-precision bimetallic thermometer according to claim 1 to 6, which is characterized in that watchcase
(1) it is equipped with the interconnecting piece (12) for connecting protection pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510504960.6A CN105115615B (en) | 2015-08-17 | 2015-08-17 | A kind of quake-proof type high-precision bimetallic thermometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510504960.6A CN105115615B (en) | 2015-08-17 | 2015-08-17 | A kind of quake-proof type high-precision bimetallic thermometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105115615A CN105115615A (en) | 2015-12-02 |
| CN105115615B true CN105115615B (en) | 2019-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510504960.6A Active CN105115615B (en) | 2015-08-17 | 2015-08-17 | A kind of quake-proof type high-precision bimetallic thermometer |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668638A (en) * | 2019-01-28 | 2019-04-23 | 安徽天康(集团)股份有限公司 | A kind of high-precision ultralow temperature temperature monitor |
| CN109668644A (en) * | 2019-03-01 | 2019-04-23 | 安徽天康(集团)股份有限公司 | A kind of teletransmission antidetonation universal type bimetallic thermometer |
| CN110095196A (en) * | 2019-05-20 | 2019-08-06 | 安徽徽宁电器仪表集团有限公司 | A kind of high pressure resistant bimetallic thermometer of Anti-seismic |
| CN114046893A (en) * | 2021-11-15 | 2022-02-15 | 红旗仪表（长兴）有限公司 | Bimetal thermometer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3696677A (en) * | 1971-02-03 | 1972-10-10 | Weston Instruments Inc | Flow-line thermometer |
| US4595301A (en) * | 1984-12-10 | 1986-06-17 | Rochester Gauges, Inc. | Slip bezel for adjustable gauge |
| CN2148319Y (en) * | 1993-01-03 | 1993-12-01 | 郭惠利 | Double metal bar type thermometer |
| CN204405206U (en) * | 2015-02-11 | 2015-06-17 | 相鹏 | A kind of bimetallic system cell |
| CN204944688U (en) * | 2015-08-17 | 2016-01-06 | 安徽电气集团股份有限公司 | A kind of quake-proof type high precision bimetallic system cell |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030112846A1 (en) * | 2001-12-19 | 2003-06-19 | Murtagh Richard James | Thermometer |
-
2015
- 2015-08-17 CN CN201510504960.6A patent/CN105115615B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3696677A (en) * | 1971-02-03 | 1972-10-10 | Weston Instruments Inc | Flow-line thermometer |
| US4595301A (en) * | 1984-12-10 | 1986-06-17 | Rochester Gauges, Inc. | Slip bezel for adjustable gauge |
| CN2148319Y (en) * | 1993-01-03 | 1993-12-01 | 郭惠利 | Double metal bar type thermometer |
| CN204405206U (en) * | 2015-02-11 | 2015-06-17 | 相鹏 | A kind of bimetallic system cell |
| CN204944688U (en) * | 2015-08-17 | 2016-01-06 | 安徽电气集团股份有限公司 | A kind of quake-proof type high precision bimetallic system cell |
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| CN105115615A (en) | 2015-12-02 |
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