CN211205561U - Thermocouple fixing device - Google Patents
Thermocouple fixing device Download PDFInfo
- Publication number
- CN211205561U CN211205561U CN201922377933.3U CN201922377933U CN211205561U CN 211205561 U CN211205561 U CN 211205561U CN 201922377933 U CN201922377933 U CN 201922377933U CN 211205561 U CN211205561 U CN 211205561U
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- CN
- China
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- thermocouple
- connecting ring
- engine
- cover plate
- hole
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Abstract
The utility model discloses a thermocouple fixing device, which comprises a connecting ring, wherein the side wall of the upper end of the connecting ring is provided with an installation through hole, a thermocouple pressing block and a gravity ball are sequentially arranged in the connecting ring installation through hole from bottom to top, and a cover plate is fixed at the outer end of the connecting ring installation through hole, and a movable gap is reserved between the cover plate and the gravity ball; the connecting ring is sleeved on the outer wall of the engine to be tested, and the gravity ball presses the thermocouple through the thermocouple pressing block under the action of gravity, so that the thermocouple is in contact with the side wall of the engine to be tested. The utility model discloses a thermocouple fixing device has solved the thermocouple and has come off in order to can not survey the technical problem of data in engine static test wall temperature measurement process, has solved the vibration that the engine takes place at the ignition in-process and has caused the problem of interference to data acquisition for measured data can reliably gather, and measuring result does not have obvious interference, and is true credible.
Description
Technical Field
The utility model relates to a thermocouple fixing device belongs to the temperature detection field.
Background
At present, an engine static test is an important test for examining the performance of an engine. The test generally requires measuring the wall temperature of the engine after the test. The thermocouple is long and thin and is similar to an iron wire, and the thermocouple is required to be attached to the outer wall of the engine for measuring the wall temperature.
The fixation of the thermocouple to the wall of the cylinder is a difficult problem. The test is carried out by using a glue fixing mode, because the wall surface temperature can reach more than 600 degrees sometimes after the engine test, the glue which is not measured is melted frequently, so that the thermocouple falls off and the measured data cannot be obtained. We also used an over-hooping method to tightly hoop the thermocouple, but there are many disturbances in the measurement signal to influence the interpretation of the result because of the vibration during the test.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the difficult problem that thermocouple and section of thick bamboo wall are reliably fixed and accurate measurement temperature data. And a thermocouple fixing device is provided.
The utility model aims at realizing through the following technical scheme:
the utility model discloses a thermocouple fixing device, which comprises a connecting ring, wherein the side wall of the upper end of the connecting ring is provided with an installation through hole, a thermocouple pressing block and a gravity ball are sequentially arranged in the connecting ring installation through hole from bottom to top, and a cover plate is fixed at the outer end of the connecting ring installation through hole, and a movable gap is reserved between the cover plate and the gravity ball; the connecting ring is sleeved on the outer wall of the engine to be tested, and the gravity ball presses the thermocouple through the thermocouple pressing block under the action of gravity, so that the thermocouple is in contact with the side wall of the engine to be tested.
In the static test process of the engine, the thermocouple can move along with the small ball and the thermocouple pressure plate due to vibration, so that the thermocouple is prevented from being damaged due to the fact that an outer ring formed by the upper half ring and the lower half ring tightly presses the thermocouple during vibration. After the ignition of the engine is finished and the engine is static and does not vibrate, the gravity ball can press the thermocouple pressing block by the gravity of the gravity ball, and the thermocouple pressing block can play a role in fixing the thermocouple.
The lower end face of the thermocouple pressing block is a circular arc-shaped pressing face matched with the appearance of the thermocouple.
The cover plate is fixed at the outer end of the connecting ring mounting through hole through a screw.
The cover plate is provided with a yielding hole with the diameter smaller than that of the gravity ball, and the gravity ball forms a movable gap with the cover plate through the yielding hole.
The connecting ring is composed of two half rings which are encircled, connecting ends with mutually matched screw holes are processed at two ends of the two half rings respectively, and the two ends of the two half rings are fixed by screws mutually and encircled on the outer wall of the engine to be tested.
Advantageous effects
The utility model discloses a thermocouple fixing device has solved the thermocouple and has come off in order to can not survey the technical problem of data in engine static test wall temperature measurement process, has solved the vibration that the engine takes place at the ignition in-process and has caused the problem of interference to data acquisition for measured data can reliably gather, and measuring result does not have obvious interference, and is true credible.
Drawings
Fig. 1 is a schematic structural view of a thermocouple fixing device according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
in the figure, 1-cover plate; 2-gravity pellets; 3-thermocouple briquetting; 4-a thermocouple; 5-connecting ring.
Detailed Description
The following detailed description of the present invention will be made with reference to the accompanying drawings and examples.
Examples
The utility model discloses a thermocouple fixing device, which comprises a connecting ring 5 with an installation through hole on the upper end side wall, a thermocouple 4, a thermocouple pressing block 3 and a gravity ball 2 which are sequentially arranged in the installation through hole of the connecting ring 5 from bottom to top, and a cover plate 1 fixed at the outer end of the installation through hole of the connecting ring 5, wherein a movable gap is reserved between the cover plate 1 and the gravity ball 2; the connecting ring 5 is sleeved on the outer wall of the engine to be tested, and the gravity ball 2 presses the thermocouple 4 downwards through the thermocouple pressing block 3 under the action of gravity, so that the thermocouple 4 is in contact with the side wall of the engine to be tested.
In the static test process of the engine, due to vibration, the thermocouple 4 can move along with the small ball and the thermocouple 4 pressing plate, so that the phenomenon that the thermocouple 4 is damaged due to the fact that the outer ring formed by the upper half ring and the lower half ring tightly presses the thermocouple 4 in vibration is avoided. After the ignition of the engine is finished and the engine is at rest and does not vibrate, the gravity ball 2 can press the thermocouple pressing block 3 by the self gravity, and the thermocouple pressing block 3 can play a role in fixing the thermocouple 4.
The lower end face of the thermocouple pressing block 3 is a circular arc-shaped lower pressing face matched with the thermocouple block 4 in shape.
The cover plate 1 is fixed at the outer end of the mounting through hole of the connecting ring 5 through a screw.
The cover plate 1 is provided with a yielding hole with the diameter smaller than that of the small gravity ball 2, and the small gravity ball 2 forms a movable gap with the cover plate 1 through the yielding hole.
The connecting ring 5 is composed of two half rings which are encircled, the connecting ends with mutually matched screw holes are processed at the two ends of the two half rings respectively, and the two ends of the two half rings are fixed by screws mutually and encircled on the outer wall of the engine to be tested.
Claims (5)
1. A thermocouple fixing device is characterized in that: the thermocouple and thermocouple pressing block are fixed at the outer end of the connecting ring mounting through hole, and a movable gap is reserved between the cover plate and the gravity ball; the connecting ring is sleeved on the outer wall of the engine to be tested, and the gravity ball presses the thermocouple through the thermocouple pressing block under the action of gravity, so that the thermocouple is in contact with the side wall of the engine to be tested.
2. A thermocouple anchoring device in accordance with claim 1, wherein: the lower end face of the thermocouple pressing block is a circular arc-shaped pressing face matched with the appearance of the thermocouple.
3. A thermocouple anchoring device in accordance with claim 1, wherein: the cover plate is fixed at the outer end of the connecting ring mounting through hole through a screw.
4. A thermocouple anchoring device in accordance with claim 1, wherein: the cover plate is provided with a yielding hole with the diameter smaller than that of the gravity ball, and the gravity ball forms a movable gap with the cover plate through the yielding hole.
5. A thermocouple anchoring device as claimed in any one of claims 1 to 4, wherein: the connecting ring is composed of two half rings which are encircled, connecting ends with mutually matched screw holes are processed at two ends of the two half rings respectively, and the two ends of the two half rings are fixed by screws mutually and encircled on the outer wall of the engine to be tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922377933.3U CN211205561U (en) | 2019-12-25 | 2019-12-25 | Thermocouple fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922377933.3U CN211205561U (en) | 2019-12-25 | 2019-12-25 | Thermocouple fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211205561U true CN211205561U (en) | 2020-08-07 |
Family
ID=71855825
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922377933.3U Active CN211205561U (en) | 2019-12-25 | 2019-12-25 | Thermocouple fixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211205561U (en) |
-
2019
- 2019-12-25 CN CN201922377933.3U patent/CN211205561U/en active Active
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