CN109211434B - Quick assembly disassembly type passive wireless induction electric temperature measurement sensor - Google Patents
Quick assembly disassembly type passive wireless induction electric temperature measurement sensor Download PDFInfo
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- CN109211434B CN109211434B CN201810724697.5A CN201810724697A CN109211434B CN 109211434 B CN109211434 B CN 109211434B CN 201810724697 A CN201810724697 A CN 201810724697A CN 109211434 B CN109211434 B CN 109211434B
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- 244000273256 Phragmites communis Species 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000002390 adhesive tape Substances 0.000 claims description 4
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- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- 229910000639 Spring steel Inorganic materials 0.000 claims description 3
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- 230000000149 penetrating effect Effects 0.000 claims description 3
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses a quick-dismounting passive wireless induction temperature measurement sensor. The invention can realize the rapid disassembly and assembly of the passive wireless induction electric temperature acquisition sensor, lighten the weight of the temperature sensor and greatly improve the reliability, the firmness and the maintainability of the installation of the temperature sensor. The invention locks the silicon steel sheet by utilizing the ratchet shaft, the cam shaft and the clamping piece, and has simple structure and good locking effect. The silicon steel sheet in the sensor has no structural damage, can be reused, and reduces maintenance cost. The operation of the sensor during installation and replacement is simple, and the sensor can be directly dismantled without tools. The invention provides a high-efficiency contact mode for the temperature measuring chip, reduces the influence of heat dissipation on the temperature measuring precision, and truly realizes the characteristics of simple installation, safe and reliable temperature measurement, accurate temperature measurement and convenient maintenance.
Description
Technical Field
The invention relates to the technical field of sensor structures, in particular to a quick-assembly and quick-disassembly sensor applied to the field of passive wireless temperature measurement in the power industry.
Background
The power equipment is in a high-voltage, high-current and high-load running state for a long time, and the electrical connection points of the power equipment are extremely easy to generate abnormal temperature rise and even burn out, so that accidents are caused. In recent years, a plurality of switch overheat accidents occur in power plants and substations, so that fire disasters and large-area power failure accidents are caused, the problem of switch overheat is a key for avoiding the occurrence of the accidents, and the realization of temperature on-line monitoring is an important means for ensuring the safe operation of high-voltage equipment. The conventional switch cabinet temperature monitoring means have certain defects: active (battery) wireless temperature measurement needs to be replaced by power failure at an unscheduled period, and the battery has the problems of hidden danger of explosion and the like; infrared temperature measurement is a non-contact temperature measurement means, but the precision and the degree of automation cannot meet the actual requirements; the optical fiber temperature measurement needs to be connected with external equipment by using an optical fiber, belongs to wired measurement, and has potential safety hazard.
Therefore, domestic power industry temperature measurement means are shifting from active, wired high-risk means to passive, wireless directions. Inductive power harvesting is an effective passive wireless monitoring solution. However, in the installation process of the existing induction electricity taking sensor, a silicon steel sheet needs to be wound on primary equipment which is electrified with alternating current, and is generally fastened by bolts or fastened by friction, so that the two modes have obvious defects. The surface of the silicon steel sheet fastened by the bolts can be left with the indentations after being pressed by the bolts, so that secondary use of the silicon steel sheet is affected, meanwhile, metal at the indentations is easy to rust, structural strength of the silicon steel sheet is affected, a temperature sensor can be loosened and slipped, and potential safety hazards are caused inside power distribution equipment. Meanwhile, the installation tools such as a screwdriver and the like are inconvenient to use in a narrow assembly space inside the power distribution equipment; the silicon steel sheet fastened by friction force needs to encircle for a plurality of circles, and is fixed by the friction force of the silicon steel sheet and the induction coil framework.
Disclosure of Invention
In view of the above, the invention provides a fast dismounting type passive wireless induction temperature measurement sensor, which can realize fast dismounting of the passive wireless induction temperature measurement sensor, lighten the weight of the temperature sensor and greatly improve the reliability, firmness and maintainability of the temperature sensor.
The invention discloses a quick-disassembly passive wireless induction electricity-taking temperature sensor, which comprises an induction electricity-taking tool and a temperature measurement sensing assembly, wherein the induction electricity-taking tool comprises a shell, a silicon steel sheet, an induction coil and a silicon steel sheet locking device, wherein the induction coil and the silicon steel sheet locking device are arranged in the shell, and the silicon steel sheet locking device comprises a ratchet shaft, a cam shaft and a clamping piece; the clamping piece is positioned between the induction coil and the ratchet shaft, two V-shaped reeds are arranged on one side, close to the ratchet shaft, of the clamping piece, and the sharp openings of the V-shaped reeds are abutted against the ratchet shaft; the ratchet wheel on the ratchet wheel shaft is engaged and locked by a cam on a cam shaft arranged on the other side of the ratchet wheel shaft; one end of the silicon steel sheet is fixed between the clamping piece and the bottom surface of the shell, the other end of the silicon steel sheet penetrates into the clamping piece from the sharp opening of the V-shaped reed and enters the induction coil, penetrates out from the rear side of the shell, winds back into the guide groove at the top of the shell from the outside, penetrates out from between the reed of the clamping piece and the ratchet shaft, and the silicon steel sheet is propped against the ratchet shaft by the reed of the clamping piece.
Further, 3 grooves are formed in the clamping piece, one end of the silicon steel sheet is pressed on the bottom of the shell through a first groove at the bottom of the clamping piece, the other end of the silicon steel sheet passes through a second groove below the second groove and winds to the sharp opening of the reed, and the silicon steel sheet enters the induction coil after penetrating into a third groove in the middle of the clamping piece from the sharp opening of the reed.
Further, the middle section of the ratchet shaft is sleeved with anti-slip rubber.
Further, the cam shaft is arranged in the shell through a bracket, and two ends of the cam shaft are provided with cams meshed with a ratchet wheel on the ratchet wheel shaft; three springs are sleeved on the camshaft body, two springs are reset torsion springs and are respectively positioned between the two cams and the bracket and used for providing torque required by reset; the other is a compression spring, which is positioned between the cam on one side and the side wall of the shell and is used for resetting the cam shaft after the disengagement, so that the cam shaft and the ratchet shaft are restored to be engaged.
Further, the temperature measuring sensing assembly is arranged at the top of the shell and comprises a PCB, a control and radio frequency module, a temperature measuring chip and a heat conducting plate, wherein the control and radio frequency module and the temperature measuring chip are arranged on the front surface of the PCB, and a silica gel insulating pad is stuck to the back surface of the PCB; the heat conducting plate is fixed above the temperature measuring chip through heat conducting glue and directly contacts the surface of the measured object through a groove reserved at the top of the shell.
Further, the heat conducting plate is a copper alloy sheet.
Further, the clamping piece is formed by casting spring steel materials at one time.
Further, the shell comprises a bottom shell and a top shell, and an anti-slip adhesive tape is stuck to the outer side of the top shell.
The beneficial effects are that:
The quick detachable induction temperature measurement sensor is suitable for primary equipment such as a busbar, a cable and the like in power equipment, which is electrified with alternating current, and through the locking mechanism of the quick detachable induction temperature measurement sensor, the operation difficulty during installation and replacement is greatly simplified, an efficient contact mode is provided for a temperature measurement chip, and the influence of heat dissipation on the temperature measurement precision is reduced. For the condition of needing replacement and maintenance, the sensor can be directly dismantled without tools. The silicon steel sheet in the sensor has no structural damage, can be reused, and reduces maintenance cost. The device has the characteristics of simple installation, safe and reliable temperature measurement, accurate temperature measurement and convenient maintenance.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a sensor according to the present invention;
FIG. 2 is a schematic diagram of the inductive power take-off assembly of the present invention;
FIG. 3 is a side partial cross-sectional view of an inductive power take-off;
FIG. 4 is a schematic diagram of a temperature sensing assembly.
Wherein, 1-induction power taking equipment; 2-a temperature measurement sensing assembly; 3-silicon steel sheet; 4-ratchet shafts; 5-a camshaft; 6-clamping pieces; 7-an induction coil; 8-bottom shell; 9-top shell; 10-a control and radio frequency module; 11-a heat-conducting plate; 12-PCB; 13-a silica gel insulating pad; 14-a temperature measuring chip.
Detailed Description
The invention will now be described in detail by way of example with reference to the accompanying drawings.
The invention provides a quick-disassembly passive wireless induction temperature measurement sensor, which comprises an induction temperature measurement electrical device 1 and a temperature measurement sensing assembly 2, as shown in figure 1.
As shown in fig. 2 and 3, the induction power-taking tool 1 is rectangular in shape, and includes: the shell, the silicon steel sheet 3, the induction coil 7 and the silicon steel sheet locking device which are arranged in the bottom shell 8; the shell comprises a bottom shell 8 and a top shell 9, the bottom shell 8 and the top shell 9 are rectangular structures, step grooves with mutually matched shapes are formed between the top shell 9 and the bottom shell 8, the step grooves fix the relative positions of the top shell 9 and the bottom shell 8, and three buckles on the side surfaces of the bottom shell 8 and the top shell 9 are responsible for clamping the top shell 9 and the bottom shell 8; the top shell 9 is provided with a square slot which is matched with the heat conducting plate 11 of the temperature measuring sensing component. The side face, the top face and the bottom face of the shell are provided with elongated guide grooves, so that the silicon steel sheet can be conveniently installed. The inside of the shell is provided with a stop block and a bracket, so that the induction coil, the silicon steel sheet locking device and the temperature measuring sensing assembly are conveniently installed. An anti-slip adhesive tape is stuck on the outer side of the top shell. The induction coil 7 is fixed in the cavity of the bottom shell 8 through a stop block and is connected with the PCB 12 in the temperature measuring sensing assembly 2 through a wire; the silicon steel sheet locking device comprises a ratchet shaft 4, a cam shaft 5 and a clamping piece 6; the clamping piece 6 is positioned between the induction coil 7 and the ratchet shaft 4, two V-shaped reeds are arranged on one side of the clamping piece 6, which is close to the ratchet shaft 4, and the sharp openings of the V-shaped reeds are abutted against the ratchet shaft; the ratchet wheel on the ratchet shaft 4 is locked by cam engagement on a cam shaft 5 provided on the other side of the ratchet shaft.
The silicon steel sheet is fixed in the shell and passes through the induction coil and then passes out of the shell, and the silicon steel sheet bypasses the primary equipment with alternating current and returns to the shell to be connected with the starting point, so that a closed loop is formed. Specific: the clamping piece 6 is clamped and fixed by the top shell 9 and the bottom shell 8, 3 grooves are formed in the clamping piece 6, and the first groove at the bottom is matched with the bottom shell and used for fixing the starting point of one end of the silicon steel sheet; the second groove at the lower part is used for winding the silicon steel sheet with one end pressed to the sharp opening of the reed, and meanwhile, the friction force between the silicon steel sheet and the clamping piece 6 can be increased, so that the fixing effect of the silicon steel sheet is enhanced; the third groove in the middle of the clamping piece 6 can enable the silicon steel sheet penetrating from the sharp opening of the reed to directly penetrate through the clamping piece 6, enter the induction coil, penetrate out of the bottom shell 8, wind back into the guide groove of the top shell 9 at the outer part and penetrate out from between the reed of the clamping piece 6 and the ratchet shaft 4, and the silicon steel sheet is tightly abutted against the ratchet shaft 4 by the reed of the clamping piece 6; the redundant part of the silicon steel sheet 3 passes through the shell through the guide groove of the bottom shell 8.
The middle section of the ratchet shaft 4 is sleeved with anti-slip rubber so as to increase the friction force between the silicon steel sheet and the ratchet shaft; two sides of the anti-skid rubber are respectively provided with a ratchet wheel, and a shaft sleeve is arranged between the ratchet wheel and the inner wall of the bottom shell; the ratchet shaft 4 is fixed in a mounting hole formed by a top shell 9 and a bottom shell 8, and is axially limited through shaft sleeves at two sides. The cams at the two ends of the cam shaft 5 are meshed with the ratchet wheels on the ratchet wheel shaft 4 to prevent the ratchet wheel shaft from reversing. Three springs are sleeved on the camshaft body, two of the three springs are reset torsion springs and are positioned between the two cams and the bracket. One is a compression spring and is positioned between the cam on one side and the inner wall of the bottom shell 8; at one end of the camshaft there is a cylindrical button. The camshaft 5 is fixed in a mounting hole formed by the top shell 9 and the bottom shell 8 and is supported and limited by a bracket in the bottom shell 8.
The temperature measuring sensing component 2 is arranged in the top shell 9, the structure of the temperature measuring sensing component 2 is shown in fig. 4, the main body is a PCB (printed circuit board) 12, a silica gel insulating pad 13 is stuck on the back surface of the PCB 12, and the PCB 12 is prevented from being contacted with the induction coil 7. The control and radio frequency module 10 and the temperature measuring chip 14 are all arranged on the front surface of the PCB. The heat conducting plate 11 is fixed above the temperature measuring chip 14 through heat conducting glue. The heat conducting plate 11 is made of a good conductor of heat energy, and a copper alloy sheet is selected in the invention. The PCB 12 is fixed on the top shell 9, the heat conducting plate 11 passes through a square slot on the top shell 9 and directly contacts the surface of the measured object, the temperature of the measured object is transmitted to the temperature measuring chip 14, and the temperature measuring chip 14 transmits the digitized temperature information to the control end through the control and radio frequency module 10 after temperature conversion.
Specifically, the top shell 9 and the bottom shell 8 are both shells of a temperature measurement sensing assembly, the internal assembly is protected, and the induction coil 7 is in a cavity of the bottom shell 8 and is fastened through pressing of the top shell 9 and the temperature measurement sensing assembly 2. One end of the silicon steel sheet 3 is clamped by the clamping piece 6 and the bottom shell 8, passes through the middle of a reed of the clamping piece 6, passes through the induction coil 7, passes out of the bottom shell 8, and enters a guide groove of the top shell 9 after surrounding primary equipment with alternating current; when the silicon steel sheet 3 passes through the middle of the clamping piece 6 and the ratchet shaft 4, the rubber on the ratchet shaft is rotated by friction, and the silicon steel sheet 3 can smoothly pass through and pass through the guide groove of the bottom shell 8. With the gradual tightening of the silicon steel sheet, interaction force is generated between the anti-slip adhesive tapes arranged on the outer side of the top shell 9 and at the two sides of the square opening and primary equipment surrounded by the silicon steel sheet, so that enough friction force is generated to fix the temperature sensor. After the silicon steel sheet 3 is in place, the silicon steel sheet is fixed by the interaction force generated by mutual extrusion of the clamping piece 6 and the ratchet shaft 4; the reed of the clamping piece is propped against the initial part of the silicon steel sheet 3 to make contact with the silicon steel sheet 3 which enters the shell again, so that the silicon steel sheet 3 forms a closed loop.
When the ratchet shaft 4 rotates, the ratchet wheel can drive the cam on the cam shaft 5 to do circumferential motion, and the torsion spring on the cam shaft 5 provides torque required by resetting for each circumferential motion, so that when the ratchet shaft 4 stops rotating, the cam can be positioned at a correct position, and the silicon steel sheet 3 is prevented from loosening due to the reverse rotation of the ratchet shaft 4. When the silicon steel sheet is locked, the ratchet shaft 4 is in a static state and has a tendency to rotate reversely. The cam on the cam shaft 5 is engaged with the ratchet teeth, and the cam is in contact with the side wall of the bottom shell 8. The side wall of the bottom shell 8 plays a limiting role, so that the reverse rotation of the cam is limited, the reverse rotation of the ratchet shaft 4 is further limited, and the reliability of fixing the silicon steel sheet between the clamping piece 6 and the ratchet shaft 4 is ensured. Pressing the cylindrical button at one end of the cam shaft 5 can cause the whole cam shaft to move axially, the cam is staggered with the ratchet wheel, the engagement between the cam and the ratchet wheel teeth fails, the cam shaft 5 loses the limiting function on the ratchet shaft 4, the ratchet shaft 4 can rotate reversely, and the silicon steel sheet can be pulled out. After the cylindrical button at one end of the cam shaft 5 is released, the cam shaft 5 is reset by the acting force provided by the pressure spring.
The clamping piece 6 is formed by casting a spring steel material at one time so as to ensure the structural strength of the part and the toughness of the reed.
The shaft body of the ratchet shaft 4 and the ratchet are formed by casting high-strength corrosion-resistant metal materials at one time, so that the structural strength of the part is ensured.
The shaft body and the cams of the cam shaft 5 are made of high-strength corrosion-resistant metal materials, the shaft body is sleeved with two reset torsion springs firstly when being assembled, and then the cams on two sides are fixed with the shaft body through hot press mounting.
The silicon steel sheet is used as a magnetic conduction medium with higher magnetic conductivity, and a magnetic field with the opposite direction to the magnetic field in the air is induced to provide a changing magnetic flux for the induction coil; the induction coil converts an alternating magnetic field in the silicon steel sheet into alternating current through electromagnetic induction and outputs the alternating current, and energy is provided for the temperature measuring sensing assembly.
According to the temperature measuring device, through the locking mechanism, the operation difficulty in installation and replacement is greatly simplified, an efficient contact mode is provided for a temperature measuring chip, and the influence of heat dissipation on temperature measuring precision is reduced. For the condition of needing replacement and maintenance, the sensor can be directly dismantled without tools. The silicon steel sheet in the sensor has no structural damage, can be reused, and reduces maintenance cost.
In summary, the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a quick assembly disassembly formula passive wireless induction electricity-taking temperature sensor, includes that the electricity-taking of response adorns (1) and temperature measurement sensing component (2), electricity-taking of response adorns (1) including casing, silicon steel sheet (3) and installs induction coil (7) and silicon steel sheet locking device in the casing, its characterized in that, silicon steel sheet locking device includes ratchet shaft (4), camshaft (5) and chucking spare (6); the clamping piece (6) is positioned between the induction coil (7) and the ratchet shaft (4), two V-shaped reeds are arranged on one side, close to the ratchet shaft (4), of the clamping piece (6), and the sharp openings of the V-shaped reeds are abutted against the ratchet shaft (4); the ratchet wheel on the ratchet wheel shaft (4) is engaged and locked by a cam on a cam shaft (5) arranged on the other side of the ratchet wheel shaft; one end of the silicon steel sheet (3) is fixed between the clamping piece (6) and the bottom surface of the shell, the other end of the silicon steel sheet penetrates into the clamping piece (6) from the sharp opening of the V-shaped reed and enters the induction coil (7), penetrates out from the rear side of the shell, winds back into a guide groove at the top of the shell from the outside, penetrates out from between the reed of the clamping piece (6) and the ratchet shaft (4), and is propped against the ratchet shaft (4) by the reed of the clamping piece (6);
The cam shaft is arranged in the shell through a bracket, and two ends of the cam shaft are provided with cams meshed with a ratchet wheel on the ratchet wheel shaft; three springs are sleeved on the camshaft body, two springs are reset torsion springs and are respectively positioned between the two cams and the bracket and used for providing torque required by reset; the other is a pressure spring, which is positioned between the cam at one side and the side wall of the shell and is used for resetting the cam shaft after the disengagement, so that the cam shaft and the ratchet shaft are restored to be engaged;
The clamping piece (6) is provided with 3 grooves, one end of the silicon steel sheet is pressed at the bottom of the shell through a first groove at the bottom of the clamping piece (6), the other end passes through a second groove below the second groove and winds to the sharp opening of the reed, and the silicon steel sheet enters the induction coil (7) after penetrating into a third groove in the middle of the clamping piece (6) from the sharp opening of the reed.
2. The quick detachable passive wireless induction temperature measurement sensor according to claim 1, wherein the middle section of the ratchet shaft (4) is sleeved with anti-slip rubber.
3. The rapid disassembly passive wireless induction electric temperature measurement sensor according to claim 1, wherein the temperature measurement sensing assembly (2) is arranged at the top of the shell and comprises a PCB (12), a control and radio frequency module (10), a temperature measurement chip (14) and a heat conducting plate (11), wherein the control and radio frequency module (10) and the temperature measurement chip (14) are arranged on the front surface of the PCB (12), and a silica gel insulating pad (13) is stuck on the back surface of the PCB (12); the heat conducting plate (11) is fixed above the temperature measuring chip (14) through heat conducting glue and passes through a groove reserved at the top of the shell to directly contact the surface of the measured object.
4. A quick detachable passive wireless induction temperature measurement sensor according to claim 3, characterized in that the heat conducting plate (11) is a copper alloy sheet.
5. The quick detachable passive wireless induction temperature measurement sensor according to claim 1, wherein the clamping piece (6) is formed by casting spring steel material at one time.
6. The quick detachable passive wireless induction temperature measurement sensor according to claim 1, wherein the shell comprises a bottom shell (8) and a top shell (9), and an anti-slip adhesive tape is stuck to the outer side of the top shell (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810724697.5A CN109211434B (en) | 2018-07-04 | 2018-07-04 | Quick assembly disassembly type passive wireless induction electric temperature measurement sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810724697.5A CN109211434B (en) | 2018-07-04 | 2018-07-04 | Quick assembly disassembly type passive wireless induction electric temperature measurement sensor |
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| CN109211434A CN109211434A (en) | 2019-01-15 |
| CN109211434B true CN109211434B (en) | 2024-04-30 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110132435B (en) * | 2019-05-20 | 2021-05-11 | 山东威纳电气有限公司 | Wireless temperature measurement sensor of inductive power-taking switch cabinet |
| CN112665758B (en) * | 2020-12-31 | 2022-05-06 | 国网河南省电力公司南阳供电公司 | Temperature sensor installation device for switch cabinet |
| CN113507082B (en) * | 2021-07-14 | 2022-05-13 | 四川大学 | Single-phase passive anti-icing and de-icing resistance type control equipment for strain tower |
| CN114889489B (en) * | 2022-07-13 | 2022-10-18 | 深圳市小樱桃实业有限公司 | Online temperature measuring equipment for emergency power supply of new energy automobile |
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| CN207335910U (en) * | 2017-08-03 | 2018-05-08 | 中国船舶重工集团公司第七一九研究所 | A kind of rapid alternative passive wireless temperature sensor |
| CN207423400U (en) * | 2017-10-16 | 2018-05-29 | 珠海新沃科技有限公司 | A kind of passive thermometric cam |
| CN208751734U (en) * | 2018-07-04 | 2019-04-16 | 中国船舶重工集团公司第七一九研究所 | A kind of quickly dismantled passive and wireless induction takes temperature measurement sensor |
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| CN109211434A (en) | 2019-01-15 |
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