CN105115615A - A shock-proof type high precision bimetal thermometer - Google Patents
A shock-proof type high precision bimetal thermometer Download PDFInfo
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- CN105115615A CN105115615A CN201510504960.6A CN201510504960A CN105115615A CN 105115615 A CN105115615 A CN 105115615A CN 201510504960 A CN201510504960 A CN 201510504960A CN 105115615 A CN105115615 A CN 105115615A
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- drainage tube
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Abstract
The invention discloses a shock-proof type high precision bimetal thermometer comprising a meter case, a protection tube, a dial, a pointer, a pointer shaft and a temperature-sensitive member. An accommodating chamber is arranged in the meter case. The dial and the pointer are both installed in the accommodating chamber. The pointer is installed at one end of the pointer shaft. The other end of the pointer shaft is connected to the temperature-sensitive member. The protection tube is in connection with the meter case. A drainage tube is arranged in the protection tube. A gap is reserved between the protection tube and the drainage tube to form a working chamber. One end of the drainage tube is closed, and the other end of the drainage tube is open. The periphery of the drainage tube is provided with an outer threaded slot winding around the drainage tube in the length direction in a spiral mode. The temperature-sensitive member is arranged in the working chamber, and is manufactured by means winding a bimetallic strip in a spiral mode along a slot cavity of the outer threaded slot. The temperature-sensitive member can perform radial and axial free stretching in the slot cavity of the outer threaded slot. The shock-proof type high precision bimetal thermometer provided by the invention has advantages of high test precision and good anti-shock effects.
Description
Technical field
The present invention relates to instrument appliance technical field, particularly relate to a kind of quake-proof type high precision bimetallic system cell.
Background technology
Bimetallic system cell is a kind of Site Detection instrument measuring medium and low temperature, directly can measure liquid vapour and gas medium temperature within the scope of-80 DEG C-+500 DEG C in various production run.The main element of industrial bimetallic system cell is the multilayered metal film of the composition that to force together with two or more metal film stacks, utilizes the principle work that two kinds of different metals degrees of expansion when temperature change is different.In the course of the work, drive pointer to rotate during the expanded by heating of one end, work instrument just demonstrates the temperature value that thermoelectrical potential is answered.At present, on market, existing bimetallic system cell measuring accuracy is lower, and earthquake-proof function is also poor, cannot meet high precision measurement requirement.
Summary of the invention
Based on the technical matters that above-mentioned background technology exists, the present invention proposes a kind of quake-proof type high precision bimetallic system cell, and this bimetallic system cell measuring accuracy is high, and has excellent shatter-proof function.
The present invention proposes a kind of quake-proof type high precision bimetallic system cell, comprising: watchcase, protection tube, scale, pointer, needle pivot and temperature-sensing element, wherein:
The inside of watchcase is provided with container cavity; Scale and pointer are installed in container cavity, and scale is positioned at the below of pointer, and pointer is arranged on one end of needle pivot, and the other end of needle pivot is connected with temperature-sensing element through container cavity;
Protection tube is connected with watchcase, is provided with drainage tube in protection tube, and is reserved with gap between the inner peripheral surface of protection tube and the outer peripheral face of drainage tube and forms working chamber; Working chamber is closed away from one end of watchcase, and working chamber is provided with the connecting hole passed for needle pivot near one end of watchcase, and the one end away from watchcase in working chamber is installed with retainer plate;
One end of drainage tube is closed, and the other end opens wide, and the end face of the end face of drainage tube open end and the blind end of protection tube;
The periphery of drainage tube is provided with the external thread groove carrying out coiled coil along drainage tube length direction;
Temperature-sensing element is arranged in working chamber, and temperature-sensing element is connected with retainer plate away from one end of needle pivot; Temperature-sensing element is formed by the vallecular cavity helically coiling of bimetallic strip along external thread groove, and can carry out radial and axial freely stretching in the vallecular cavity of temperature-sensing element thread groove outside.
Preferably, the length of drainage tube is less than or equal to the helical length of temperature-sensing element.
Preferably, drainage tube sidewall is provided with backflow arm near the side of blind end, and the outlet of backflow arm is positioned at the top of drainage tube openend.
Preferably, backflow arm is positioned at working chamber, and the outlet of backflow arm is positioned at the sidewall of protection tube.
Preferably, the inner peripheral surface of drainage tube is provided with the internal thread groove carrying out coiled coil along drainage tube length direction, and internal thread groove is recessed to form by the inner peripheral surface of external thread groove to drainage tube.
Preferably, protection tube is for carrying out to inner peripheral surface the threaded line pipe that spiral depression formed by the outer peripheral face of protection tube along outer tube length direction.
Preferably, the width of bimetallic strip that temperature-sensing element adopts is less than the width of external thread groove vallecular cavity.
Preferably, scale is fixed in container cavity by sealing clamping ring.
Preferably, watchcase comprises upper shell, liner shell and lower house, and liner shell is positioned at lower house inside and coordinates the container cavity being formed and seal with lower seal, and the opening edge of liner shell is pressed on sealing clamping ring for compressing sealing clamping ring; Upper shell is positioned at the outside of lower house and is connected with lower house.
Preferably, watchcase is provided with the connecting portion for connecting protection tube.
Preferably, retainer plate is made by Heat Conduction Material.
In the present invention, by arranging drainage tube in protection tube, the open end of drainage tube is utilized to be incorporated in drainage tube by measured medium, the inside and outside both sides of temperature-sensing element are made all to be in by the coated state of measured medium, thus increase the contact area of temperature-sensing element and measured medium, improve the accurate testing degree of temperature-sensing element and the object of sensitivity to reach; And be provided with the external thread groove carrying out coiled coil along drainage tube length direction due to the periphery of the drainage tube in the present invention, temperature-sensing element is formed by the vallecular cavity helically coiling of bimetallic strip along external thread groove, and can carry out radial and axial freely stretching in the vallecular cavity of temperature-sensing element thread groove outside; It can thus be appreciated that the spiral of drainage tube to temperature-sensing element has good supporting role, thus improve the shatter-proof ability of temperature-sensing element.
In sum, it is high that quake-proof type high precision bimetallic system cell provided by the present invention has measuring accuracy, the advantage that shock-proof effect is good, and also there is fast response time, volume is little, the linearity good, more stable advantage.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of quake-proof type high precision bimetallic system cell that the present invention proposes.
Embodiment
Below, by specific embodiment, technical scheme of the present invention is described in detail.
As shown in Figure 1, Fig. 1 is the structural representation of a kind of quake-proof type high precision bimetallic system cell that the present invention proposes.
With reference to Fig. 1, a kind of quake-proof type high precision bimetallic system cell that the embodiment of the present invention proposes, comprising: watchcase 1, protection tube 2, scale 3, pointer 4, needle pivot 5 and temperature-sensing element 6, wherein:
Watchcase 1 is provided with the connecting portion 12 for connecting protection tube 2, and the inside of watchcase 1 is provided with container cavity; Scale 3 and pointer 4 are installed in container cavity, and scale 3 is positioned at the below of pointer 4, and scale 3 is fixed in container cavity by sealing clamping ring 11, and pointer 4 is arranged on one end of needle pivot 5, and the other end of needle pivot 5 is connected with temperature-sensing element 6 through container cavity;
Protection tube 2 is connected with watchcase 1, is provided with drainage tube 7 in protection tube 2, and is reserved with gap between the outer peripheral face of the inner peripheral surface of protection tube 2 and drainage tube 7 and forms working chamber 8; Working chamber 8 is closed away from one end of watchcase 1, and working chamber 8 is provided with the connecting hole passed for needle pivot 5 near one end of watchcase 1, and the one end away from watchcase 1 in working chamber 8 is installed with retainer plate 9, and retainer plate 9 is made by Heat Conduction Material;
One end of drainage tube 7 is closed, and the other end opens wide, and the end face of the end face of drainage tube 7 open end and the blind end of protection tube 2; Drainage tube 7 sidewall is provided with backflow arm 10 near the side of blind end, and the outlet of backflow arm 10 is positioned at the top of drainage tube 7 openend, and backflow arm 10 is positioned at working chamber 8, and the outlet of backflow arm 10 is positioned at the sidewall of protection tube 2; Measured medium can be made to flow in drainage tube 7 by arranging of arm 10 of backflow, thus improve the precision of test.
The periphery of drainage tube 7 is provided with the external thread groove carrying out coiled coil along drainage tube 7 length direction; Temperature-sensing element 6 is arranged in working chamber 8, and temperature-sensing element 6 is connected with retainer plate 9 away from one end of needle pivot 5; Temperature-sensing element 6 is formed by the vallecular cavity helically coiling of bimetallic strip along external thread groove, and the helical length of temperature-sensing element 6 is more than or equal to the length of drainage tube 7, can carry out radial and axial freely stretching in the vallecular cavity of temperature-sensing element 6 thread groove outside; Because the spiral of drainage tube 7 pairs of temperature-sensing elements 6 has good supporting role, thus improve the shatter-proof ability of temperature-sensing element 6.
In the present embodiment, the inner peripheral surface of drainage tube 7 is provided with the internal thread groove carrying out coiled coil along drainage tube 7 length direction, and internal thread groove is recessed to form by the inner peripheral surface of external thread groove to drainage tube 7; Protection tube 2 is for carrying out to inner peripheral surface the threaded line pipe that spiral depression formed by the outer peripheral face of protection tube 2 along outer tube length direction; By the design of this structure, the contact area of measured medium and tube wall can be increased, and then improve measuring accuracy.
In addition, in order to improve the sealing property of watchcase 1, and anti-deformation, watchcase 1 in this enforcement comprises upper shell 101, liner shell 102 and lower house 103, liner shell 102 is positioned at lower house 103 inside and coordinates the container cavity being formed and seal with lower seal, further, the opening edge of liner shell 102 is pressed on sealing clamping ring 11 for compressing sealing clamping ring 11; Upper shell 101 is positioned at the outside of lower house 103 and is connected with lower house 103.
The present invention is such work, the open end of drainage tube 7 is utilized to be incorporated into by measured medium in drainage tube 7, the inside and outside both sides of temperature-sensing element 6 are made all to be in by the coated state of measured medium, thus increase temperature-sensing element 6 and the contact area of measured medium, improve the accurate testing degree of temperature-sensing element 6 and the object of sensitivity to reach.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (10)
1. a quake-proof type high precision bimetallic system cell; it is characterized in that; comprise: watchcase (1), protection tube (2), scale (3), pointer (4), needle pivot (5) and temperature-sensing element (6), wherein:
The inside of watchcase (1) is provided with container cavity; Scale (3) and pointer (4) are installed in container cavity, and scale (3) is positioned at the below of pointer (4), pointer (4) is arranged on one end of needle pivot (5), and the other end of needle pivot (5) is connected with temperature-sensing element (6) through container cavity;
Protection tube (2) is connected with watchcase (1), be provided with drainage tube (7) in protection tube (2), and be reserved with gap between the outer peripheral face of the inner peripheral surface of protection tube (2) and drainage tube (7) and form working chamber (8); Working chamber (8) is closed away from one end of watchcase (1), working chamber (8) is provided with the connecting hole passed for needle pivot (5) near one end of watchcase (1), the one end away from watchcase (1) in working chamber (8) is installed with retainer plate (9);
One end of drainage tube (7) is closed, and the other end opens wide, and the end face of the blind end of the end face of drainage tube (7) open end and protection tube (2);
The periphery of drainage tube (7) is provided with the external thread groove carrying out coiled coil along drainage tube (7) length direction;
Temperature-sensing element (6) is arranged in working chamber (8), and temperature-sensing element (6) is connected with retainer plate (9) away from one end of needle pivot (5); Temperature-sensing element (6) is formed by the vallecular cavity helically coiling of bimetallic strip along external thread groove, and can carry out radial and axial freely stretching in the vallecular cavity of temperature-sensing element (6) thread groove outside.
2. quake-proof type high precision bimetallic system cell according to claim 1, is characterized in that, the length of drainage tube (7) is less than or equal to the helical length of temperature-sensing element (6).
3. quake-proof type high precision bimetallic system cell according to claim 1, it is characterized in that, drainage tube (7) sidewall is provided with backflow arm (10) near the side of blind end, and the outlet of backflow arm (10) is positioned at the top of drainage tube (7) openend.
4. quake-proof type high precision bimetallic system cell according to claim 3; it is characterized in that; backflow arm (10) is positioned at working chamber (8), and the outlet of backflow arm (10) is positioned at the sidewall of protection tube (2).
5. quake-proof type high precision bimetallic system cell according to claim 1, it is characterized in that, the inner peripheral surface of drainage tube (7) is provided with the internal thread groove carrying out coiled coil along drainage tube (7) length direction, and internal thread groove is recessed to form by the inner peripheral surface of external thread groove to drainage tube (7).
6. quake-proof type high precision bimetallic system cell according to claim 1, is characterized in that, protection tube (2) is for carrying out to inner peripheral surface the threaded line pipe that spiral depression formed by the outer peripheral face of protection tube (2) along outer tube length direction.
7. quake-proof type high precision bimetallic system cell according to claim 1, is characterized in that, the width of the bimetallic strip that temperature-sensing element (6) adopts is less than the width of external thread groove vallecular cavity.
8. quake-proof type high precision bimetallic system cell according to claim 1, is characterized in that, scale (3) is fixed in container cavity by sealing clamping ring (11); Retainer plate (9) is made by Heat Conduction Material.
9. quake-proof type high precision bimetallic system cell according to claim 8, it is characterized in that, watchcase (1) comprises upper shell (101), liner shell (102) and lower house (103), liner shell (102) is positioned at lower house (103) inside and coordinates the container cavity being formed and seal with lower seal, further, the opening edge of liner shell (102) is pressed on sealing clamping ring (1) (1) for compressing sealing clamping ring (1) (1); Upper shell (101) is positioned at the outside of lower house (103) and is connected with lower house (103).
10. the quake-proof type high precision bimetallic system cell according to any one of claim 1-9, is characterized in that, watchcase (1) is provided with the connecting portion (12) for connecting protection tube (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 |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510504960.6A CN105115615B (en) | 2015-08-17 | 2015-08-17 | A kind of quake-proof type high-precision bimetallic thermometer |
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| CN105115615A true CN105115615A (en) | 2015-12-02 |
| CN105115615B CN105115615B (en) | 2019-06-25 |
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| 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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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 (6)
| 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 |
| US20030112846A1 (en) * | 2001-12-19 | 2003-06-19 | Murtagh Richard James | 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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2015
- 2015-08-17 CN CN201510504960.6A patent/CN105115615B/en active Active
Patent Citations (6)
| 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 |
| US20030112846A1 (en) * | 2001-12-19 | 2003-06-19 | Murtagh Richard James | 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 |
Cited By (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 |
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| Publication number | Publication date |
|---|---|
| CN105115615B (en) | 2019-06-25 |
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