CN113340448A - Thermal resistor with telescopic detection rod and use method thereof - Google Patents
Thermal resistor with telescopic detection rod and use method thereof Download PDFInfo
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- CN113340448A CN113340448A CN202110686082.XA CN202110686082A CN113340448A CN 113340448 A CN113340448 A CN 113340448A CN 202110686082 A CN202110686082 A CN 202110686082A CN 113340448 A CN113340448 A CN 113340448A
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- protective sleeve
- detection rod
- elastic bulge
- sensing probe
- extension tube
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
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- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention relates to a thermal resistor with a telescopic detection rod and a using method thereof, belonging to the technical field of thermal resistors. The technical scheme of the invention is as follows: the first protective sleeve (5), the second protective sleeve (6) and the third protective sleeve (7) are sleeved with each other to form a detection rod; the first protective sleeve (5), the second protective sleeve (6) and the third protective sleeve (7) are sleeved and fixed through the groove (9) and the elastic bulge (10); one end of a spring extension tube (11) is connected into the junction box (3), the other end of the spring extension tube is finally fixed inside the temperature sensing probe (8) through a middle hole and a detection rod of the threaded joint (4), and three temperature sensing probe signal cables are arranged inside the spring extension tube (11). The invention has the beneficial effects that: the thermal resistance detection rod can realize multi-point extension of the detection rod under the action of external force, and finally the purpose of measuring the temperature of different temperature measuring points is realized.
Description
Technical Field
The invention relates to a thermal resistor with a telescopic detection rod and a using method thereof, belonging to the technical field of thermal resistors.
Background
The thermal resistor is widely used in the industrial field, and is one of the most common temperature sensors in the middle and low temperature range. Its main features are measurable temp. range below zero deg.C, high measuring accuracy and stable performance. The measurement accuracy of the platinum thermal resistor is the highest, and the platinum thermal resistor can be used for directly measuring the temperature of liquid level, gas, steam-water mixture and solid surface in the production process, and the temperature measurement range is generally-200 ℃ to 500 ℃.
In the actual production process, the measured object is often not fixed, and the thermal resistor with the appropriate length of the detection rod needs to be replaced according to the position of the temperature measurement point in each temperature measurement period, so that a plurality of thermal resistors with different lengths of the measurement rods are additionally needed as a standby, and the operation is very inconvenient.
Disclosure of Invention
The invention aims to provide a thermal resistor with a telescopic detection rod and a using method thereof, so that the thermal resistor detection rod can realize multi-point telescopic of the detection rod under the action of external force, finally realize the aim of measuring the temperature of different temperature measuring points, and effectively solve the problems in the prior art.
The technical scheme of the invention is as follows: a thermal resistor with a telescopic detection rod comprises an end cover, a wire inlet, a junction box, a threaded joint, a first protective sleeve, a second protective sleeve, a third protective sleeve, a temperature sensing probe, a groove, an elastic bulge and a spring telescopic pipe, wherein one end of the first protective sleeve is welded at the bottom of the threaded joint, the other end of the first protective sleeve is an opening, and the inner diameter of the first protective sleeve is equal to the outer diameter of the second protective sleeve; both ends of the second protective sleeve are provided with openings, and the inner diameter of the second protective sleeve is equal to the outer diameter of the third protective sleeve; one end of the third protective sleeve is provided with a temperature sensing probe, and the other end of the third protective sleeve is provided with an opening; the first protective sleeve, the second protective sleeve and the third protective sleeve are mutually sleeved to form a detection rod; two rows of circular grooves are radially and symmetrically distributed on the inner wall of the first protective sleeve, and the size of each groove is the same as that of the elastic bulge on the outer wall of the second protective sleeve; two rows of circular grooves are radially and symmetrically distributed on the inner wall of the second protective sleeve, and the size of the circular grooves is the same as that of the elastic bulges on the outer wall of the third protective sleeve; the top of the elastic bulge is arc-shaped, the bottom of the elastic bulge is provided with a return spring, and the first protective sleeve, the second protective sleeve and the third protective sleeve are sleeved and fixed through the groove and the elastic bulge;
the end cover is arranged at the top of the junction box, and the wire inlet is arranged on the side surface of the junction box; one end of the spring extension tube is connected to the junction box, the other end of the spring extension tube is finally fixed inside the temperature sensing probe through a middle hole of the threaded connector and the detection rod, and three temperature sensing probe signal cables are arranged inside the spring extension tube.
The device also comprises a thrust limit, a pull-proof limit and slideways, wherein the slideways are arranged at the radial symmetrical positions of the inner walls of the first protective sleeve and the second protective sleeve; the anti-pulling limiting device is arranged at the top ends of the outer walls of the second protective sleeve and the third protective sleeve, and the anti-pulling limiting device can only move along the slide way; the thrust limit is arranged at the top end of the second protective sleeve.
A method for using a thermal resistor with a telescopic detection rod comprises the following steps: external force intervenes to pull the temperature sensing probe, when the pulling force reaches the critical point of the spring thrust of the spring extension tube at the bottom of the elastic bulge, the adjacent protective sleeves slide relatively but cannot twist; when the elastic bulge slides to the groove with the required length of the detection rod, the elastic bulge enters the appointed groove, and the detection rod is in a stable state again, so that the length adjustment of the detection rod is completed.
The invention has the beneficial effects that: the thermal resistance detection rod can realize multi-point extension of the detection rod under the action of external force, and finally the purpose of measuring the temperature of different temperature measuring points is realized.
Drawings
FIG. 1 is a front view of the present invention when fully extended;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a right side view of the invention fully extended;
FIG. 4 is an enlarged view of a portion of FIG. 3;
FIG. 5 is a front view of the present invention fully collapsed;
in the figure: the temperature-sensing probe comprises an end cover 1, a wire inlet 2, a junction box 3, a threaded connector 4, a first protective sleeve 5, a second protective sleeve 6, a third protective sleeve 7, a temperature-sensing probe 8, a groove 9, an elastic bulge 10, a spring telescopic tube 11, a thrust limit 21, a pull-proof limit 22 and a slide 23.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions of the embodiments of the present invention with reference to the drawings of the embodiments, and it is obvious that the described embodiments are a small part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
A thermal resistor with a telescopic detection rod comprises an end cover 1, a wire inlet 2, a junction box 3, a threaded joint 4, a first protective sleeve 5, a second protective sleeve 6, a third protective sleeve 7, a temperature sensing probe 8, a groove 9, an elastic bulge 10 and a spring extension tube 11, wherein one end of the first protective sleeve 5 is welded at the bottom of the threaded joint 4, the other end of the first protective sleeve is an opening, and the inner diameter of the first protective sleeve 5 is equal to the outer diameter of the second protective sleeve 6; both ends of the second protective sleeve 6 are open, and the inner diameter of the second protective sleeve 6 is equal to the outer diameter of the third protective sleeve 7; one end of the third protective sleeve 7 is provided with a temperature sensing probe 8, and the other end is provided with an opening; the first protective sleeve 5, the second protective sleeve 6 and the third protective sleeve 7 are sleeved with each other to form a detection rod; two rows of circular grooves 9 are radially and symmetrically distributed on the inner wall of the first protective sleeve 5, and the size of each groove 9 is the same as that of the elastic bulge 10 on the outer wall of the second protective sleeve 6; two rows of circular grooves 9 are radially and symmetrically distributed on the inner wall of the second protective sleeve 6, and the size of the circular grooves is the same as that of the elastic bulges 10 on the outer wall of the third protective sleeve 7; the top of the elastic bulge 10 is arc-shaped, the bottom of the elastic bulge is provided with a return spring, and the first protective sleeve 5, the second protective sleeve 6 and the third protective sleeve 7 are sleeved and fixed through the groove 9 and the elastic bulge 10;
the end cover 1 is arranged at the top of the junction box 3, and the wire inlet 2 is arranged on the side surface of the junction box 3; one end of the spring extension tube 11 is connected to the junction box 3, the other end of the spring extension tube is finally fixed inside the temperature sensing probe 8 through a middle hole and a detection rod of the threaded joint 4, and three temperature sensing probe signal cables are arranged inside the spring extension tube 11.
The anti-pulling protective sleeve further comprises a thrust limit 21, an anti-pulling limit 22 and a slideway 23, wherein the slideway 23 is arranged at the radial symmetrical positions of the inner walls of the first protective sleeve 5 and the second protective sleeve 6; the anti-pulling limiting position 22 is arranged at the top ends of the outer walls of the second protective sleeve 6 and the third protective sleeve 7, and the anti-pulling limiting position 22 can only move along the slide rail 23; a thrust stop 21 is provided at the top end of the second protective sleeve 6.
A method for using a thermal resistor with a telescopic detection rod comprises the following steps: external force intervenes to pull the temperature sensing probe 8, when the pulling force reaches the critical point of the spring thrust of the spring extension tube 11 at the bottom of the elastic bulge 10, the adjacent protective sleeves slide relatively but cannot twist; when the elastic projection 10 slides to the groove 9 of the desired length of the probe rod, the elastic projection 10 enters the designated groove 9, and the probe rod is re-brought into a stable state, thereby completing the length adjustment of the probe rod.
In practical application, the probe rod comprises tertiary protective case, and tertiary protective case pipe diameter is inequality each other, and 5 pipe diameters of first protective case are the biggest, and one end welding is in screwed joint 4 bottoms, and the other end is the opening, and the internal diameter equals 6 external diameters of second protective case, and 5 inner wall radial symmetric distributions of first protective case are two circular recess 9, and recess 9 size is the same with 6 outer wall elastic bulge 10 of second protective case. Two ends of the second protective sleeve 6 are both provided with openings, the inner diameter of the sleeve is the same as the outer diameter of the third protective sleeve 7, two rows of circular grooves 9 are radially and symmetrically distributed on the inner wall, and the two rows of circular grooves are the same as the elastic bulges 10 in size. One end of the third protective sleeve 7 is provided with a temperature sensing probe 8, the other end of the third protective sleeve is provided with an opening, and the outer wall of the sleeve is provided with two symmetrical elastic bulges 10 which have the same size with the groove 9. The top of the elastic bulge 10 is arc-shaped, and the bottom is provided with a return spring. When the lower protective sleeve is inserted into the upper protective sleeve, the elastic bulge 10 can be completely matched with the groove 9 to play a role in fixing.
One end of the spring extension tube 11 is connected to the junction box 3, the other end of the spring extension tube is finally fixed inside the temperature sensing probe 8 through a middle hole and a detection rod of the threaded joint 4, and three temperature sensing probe signal cables are arranged inside the spring extension tube 11 and used for transmitting resistance signals. The spring telescopic tube 11 can protect the signal cable inside from being influenced by pulling force and pushing force so as to be damaged.
As shown in fig. 3 and 4, 3, in order to prevent the upper and lower protective sleeves from twisting, the elastic protrusions 10 and the grooves 9 are deviated in direction, slide ways 23 are arranged at radially symmetrical positions of the inner walls of the first protective sleeve 5 and the second protective sleeve 6, pull-preventing limits 22 are arranged at the top ends of the outer walls of the second protective sleeve 6 and the third protective sleeve 7, the pull-preventing limits 22 can only move along the slide ways 23, and meanwhile, the pull-preventing limits 22 can prevent the lower protective sleeve from being separated from the upper protective sleeve due to excessive stretching. The top end of the second protective sleeve 6 is provided with a thrust limiting 21, and the thrust limiting 21 can prevent the external thrust from being overlarge to directly push the third protective sleeve 7 into the first protective sleeve 5, so that the temperature sensing probe 8 is retracted into the protective sleeve and cannot be pulled out.
The use method of the invention comprises the following steps: assuming that an external force intervenes to pull the temperature sensing probe 8 of the thermal resistor, when the pulling force reaches the critical point of the spring pushing force at the bottom of the elastic bulge 10, the adjacent protective sleeves will slide relatively but will not twist. When the elastic projection 10 slides into the groove 9 of the desired length of the probe rod, the elastic projection enters the designated groove 9 and the probe rod re-enters the stable state. Therefore, the invention can realize the multi-point extension of the detection rod by the thermal resistance detection rod under the action of external force, and finally realize the purpose of measuring the temperature of different temperature measuring points.
Claims (3)
1. A thermal resistor with a telescopic detection rod is characterized in that: the temperature-sensing probe comprises an end cover (1), a wire inlet (2), a junction box (3), a threaded joint (4), a first protective sleeve (5), a second protective sleeve (6), a third protective sleeve (7), a temperature-sensing probe (8), a groove (9), an elastic bulge (10) and a spring extension tube (11), wherein one end of the first protective sleeve (5) is welded at the bottom of the threaded joint (4), the other end of the first protective sleeve is provided with an opening, and the inner diameter of the first protective sleeve (5) is equal to the outer diameter of the second protective sleeve (6); both ends of the second protective sleeve (6) are open, and the inner diameter of the second protective sleeve (6) is equal to the outer diameter of the third protective sleeve (7); one end of the third protective sleeve (7) is provided with a temperature sensing probe (8), and the other end is provided with an opening; the first protective sleeve (5), the second protective sleeve (6) and the third protective sleeve (7) are sleeved with each other to form a detection rod; two rows of circular grooves (9) are radially and symmetrically distributed on the inner wall of the first protective sleeve (5), and the size of each groove (9) is the same as that of the elastic bulge (10) on the outer wall of the second protective sleeve (6); two rows of circular grooves (9) are radially and symmetrically distributed on the inner wall of the second protective sleeve (6), and the size of the circular grooves is the same as that of the elastic bulge (10) on the outer wall of the third protective sleeve (7); the top of the elastic bulge (10) is arc-shaped, the bottom of the elastic bulge is provided with a return spring, and the first protective sleeve (5), the second protective sleeve (6) and the third protective sleeve (7) are sleeved and connected through a groove (9) and the elastic bulge (10);
the end cover (1) is arranged at the top of the junction box (3), and the wire inlet (2) is arranged on the side surface of the junction box (3); one end of a spring extension tube (11) is connected into the junction box (3), the other end of the spring extension tube is finally fixed inside the temperature sensing probe (8) through a middle hole and a detection rod of the threaded joint (4), and three temperature sensing probe signal cables are arranged inside the spring extension tube (11).
2. A telescopic thermal resistor for a probe rod according to claim 1, wherein: the anti-pulling device further comprises a thrust limit (21), an anti-pulling limit (22) and a slideway (23), wherein the slideway (23) is arranged at the radial symmetrical positions of the inner walls of the first protective sleeve (5) and the second protective sleeve (6); the anti-pulling limiting device (22) is arranged at the top ends of the outer walls of the second protective sleeve (6) and the third protective sleeve (7), and the anti-pulling limiting device (22) can only move along the slide way (23); the thrust limit (21) is arranged at the top end of the second protective sleeve (6).
3. A method of using a telescopic thermal resistor as defined in any one of claims 1-2, comprising the steps of: external force intervenes to pull the temperature sensing probe (8), when the pulling force reaches the critical point of the spring thrust of the spring extension tube (11) at the bottom of the elastic bulge (10), the adjacent protective sleeves slide relatively but cannot twist; when the elastic bulge (10) slides to the groove (9) with the required length of the detection rod, the elastic bulge (10) enters the designated groove (9), and the detection rod is re-stabilized, so that the length adjustment of the detection rod is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110686082.XA CN113340448A (en) | 2021-06-21 | 2021-06-21 | Thermal resistor with telescopic detection rod and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110686082.XA CN113340448A (en) | 2021-06-21 | 2021-06-21 | Thermal resistor with telescopic detection rod and use method thereof |
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| Publication Number | Publication Date |
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| CN113340448A true CN113340448A (en) | 2021-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110686082.XA Pending CN113340448A (en) | 2021-06-21 | 2021-06-21 | Thermal resistor with telescopic detection rod and use method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114739527A (en) * | 2022-04-01 | 2022-07-12 | 安徽埃克森仪表有限公司 | Thermal resistor with telescopic detection rod for combustor |
| CN117100949A (en) * | 2023-09-26 | 2023-11-24 | 安徽宏宇五洲医疗器械股份有限公司 | Take safety protection formula to independently inject general syringe needle |
| CN118067261A (en) * | 2024-04-24 | 2024-05-24 | 中瓷光电(山东)有限公司 | Anti-overheat sensor capable of being quickly installed |
-
2021
- 2021-06-21 CN CN202110686082.XA patent/CN113340448A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114739527A (en) * | 2022-04-01 | 2022-07-12 | 安徽埃克森仪表有限公司 | Thermal resistor with telescopic detection rod for combustor |
| CN117100949A (en) * | 2023-09-26 | 2023-11-24 | 安徽宏宇五洲医疗器械股份有限公司 | Take safety protection formula to independently inject general syringe needle |
| CN117100949B (en) * | 2023-09-26 | 2024-02-23 | 安徽宏宇五洲医疗器械股份有限公司 | Take safety protection formula to independently inject general syringe needle |
| CN118067261A (en) * | 2024-04-24 | 2024-05-24 | 中瓷光电(山东)有限公司 | Anti-overheat sensor capable of being quickly installed |
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