CN213779316U - Temperature measuring device and contact arm with same - Google Patents
Temperature measuring device and contact arm with same Download PDFInfo
- Publication number
- CN213779316U CN213779316U CN202022190658.7U CN202022190658U CN213779316U CN 213779316 U CN213779316 U CN 213779316U CN 202022190658 U CN202022190658 U CN 202022190658U CN 213779316 U CN213779316 U CN 213779316U
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- temperature measuring
- measuring unit
- under test
- contact arm
- induction power
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Abstract
The utility model relates to a temperature measuring device and have its arm that touches. This temperature measuring device is installed to the device under test in order to detect this device under test's temperature when this device under test circular telegram, and this temperature measuring device includes: a temperature measuring unit with a mounting part, the temperature measuring unit being configured to be fastened to the device under test by means of the mounting part so that the temperature measuring unit is in close contact with the device under test; the pair of end parts of the induction electricity taking piece extend along the periphery of the device to be tested so as to close the induction electricity taking piece into a ring, so as to supply power to the temperature measuring unit when the device to be tested is electrified; and the insulating sleeve hoops the paired ends of the induction power taking sheet and covers the two tail ends of the induction power taking sheet.
Description
Technical Field
The utility model relates to an electrical equipment technical field especially relates to temperature measuring device and have its arm that touches.
Background
In the operation process of electrical equipment such as switchgear, in order to avoid safety accidents such as operation failure, even burning explosion and the like of the switchgear due to temperature rise, a temperature measuring device needs to be installed at an important hot spot area of the switchgear, such as a contact arm of a circuit breaker, to monitor the temperature of the contact arm in real time. However, the temperature measuring device in the prior art is usually mounted to the measured device, such as a contact arm, in a manner of watchband mounting, buckle-and-tie mounting, or annular sleeve static contact mounting, and the like, obviously, the above mounting manner cannot ensure reliable contact between the temperature measuring device and the measured device and a risk of virtual overlap exists, once the virtual overlap occurs between the temperature measuring device and the measured device, the measurement accuracy is directly affected and a correct temperature rise value cannot be fed back, so that safe operation of the measured device cannot be ensured.
There is therefore a need in the art for a thermometric device that ensures reliable contact with the device under test.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a temperature measuring device that can solve above-mentioned part problem at least.
The utility model discloses still aim at providing an use above-mentioned modified temperature measuring device's arm that touches.
According to an aspect of the utility model, a temperature measuring device is provided, and it is installed to the device under test in order to detect this device under test's temperature when this device under test circular telegram, temperature measuring device includes: a temperature measuring unit with a mounting portion, the temperature measuring unit being configured to be fastened to the device under test by means of the mounting portion so as to be in close contact with the device under test; the pair of end parts of the induction power taking sheet extend along the periphery of the device to be tested so as to close the induction power taking sheet into a ring, so as to supply power to the temperature measuring unit when the device to be tested is electrified; and the insulating sleeve hoops the paired end parts of the induction power taking sheets tightly and covers the two tail ends of the induction power taking sheets.
Compared with the prior art, the utility model provides a temperature measuring device realizes and is surveyed the fastening connection of device through the temperature measuring unit who sets up the area installation department, has guaranteed the in close contact with between temperature measuring unit and the device being surveyed and has avoided possible virtual overlap joint between the two to ensure the detection reliability to the temperature of being surveyed the device. In addition, utilize the response to get the electric tape and can improve for the power supply of temperature measuring unit the utility model discloses a temperature measuring device's convenience of use. Finally, the tail end of the induction electricity taking piece coated by the insulating sleeve can further eliminate the hidden danger of point discharge, and the insulating property of the temperature measuring device is enhanced.
Preferably, the number of the insulating sleeves is one.
Preferably, the number of the insulating sleeves is two, and the two insulating sleeves are designed to respectively clamp two ends of the induction power taking piece and cover two ends of the induction power taking piece.
Preferably, the induction power pick-up sheet is designed as a steel sheet.
Preferably, the induction power taking sheet and the temperature measuring unit are formed by injection molding.
Preferably, the mounting part of the temperature measuring unit is designed into a mounting lug which is transversely projected from two sides of the induction power taking piece and is used for a fastener to penetrate through.
Preferably, the fastening element is designed as a screw.
According to the utility model discloses an on the other hand provides a touch arm, touch and install aforementioned temperature measuring device in the periphery of arm.
Preferably, the periphery of the contact arm is provided with a mounting groove for mounting a temperature measuring unit of the temperature measuring device.
Preferably, a connecting hole for connecting a fastener is arranged in the mounting groove.
Additional features and advantages of the invention will be set forth in part in the description which follows, and in part will be apparent to those having ordinary skill in the art upon examination of the following, or may be learned from the practice of the invention.
Drawings
Embodiments of the present invention are described in detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a schematic perspective view of a temperature measuring device according to the present invention;
FIG. 2 is a schematic perspective view of the temperature measuring device mounted to the contact arm according to the present invention;
fig. 3 is a schematic top view of the temperature measuring device according to the present invention mounted to the contact arm.
Description of reference numerals:
10-a temperature measuring device; 11-a temperature measuring unit; 111-a mounting portion; 112-mounting holes; 113-a receiving groove; 12-induction power taking sheet; 121-a coinciding section; 122 — a first non-coinciding segment; 123-a second non-coinciding section; 13-an insulating sleeve; 14-a fastener; 20-a contact arm; 21-mounting groove.
Detailed Description
Referring now to the drawings, the disclosed temperature measuring device and the schematic scheme of the touch arm used therein will be described in detail. Although the drawings are provided to present some embodiments of the invention, the drawings are not necessarily to scale of particular embodiments, and certain features may be exaggerated, removed, or partially sectioned to better illustrate and explain the disclosure of the present invention. The position of some components in the drawings can be adjusted according to actual requirements on the premise of not influencing the technical effect. The appearances of the phrase "in the drawings" or similar language in the specification are not necessarily referring to all drawings or examples.
Certain directional terms used hereinafter to describe the drawings, such as "inner", "outer", "above", "below", and other directional terms, will be understood to have their normal meaning and refer to those directions as they normally relate to when viewing the drawings. Unless otherwise indicated, the directional terms described herein are generally in accordance with conventional directions as understood by those skilled in the art.
The terms "first," "second," and the like as used herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.
The terms "joined," "connected," and the like as used herein, include both two components that are indirectly connected together through an intermediate layer (e.g., an adhesive, a solder, etc.) or an intermediate member (e.g., a connector, a transition member, etc.), and two components that are directly connected together without any intermediate layer (e.g., an adhesive, a solder, etc.) or intermediate member (e.g., a connector, a transition member, etc.).
Fig. 1 to fig. 3 show the utility model discloses a temperature measuring device 10 by way of example, temperature measuring device 10 in this example can be used to detect the temperature of being surveyed the device such as the contact arm 20 of circuit breaker and send the temperature signal that detects to the display and the controlling means that are located the instrument room of circuit breaker via wireless transmission mode such as cellular network or bluetooth etc. to carry out real time monitoring to the temperature of being surveyed the device, thereby avoid being surveyed the trouble or the accident that the device arouses because of the temperature rise problem. Referring to fig. 1 to 3, the temperature measuring device 10 of the present invention may include a temperature measuring unit 11, an induction power-taking piece 12 and an insulating sleeve 13.
Specifically, the contact arm 20 has a cylindrical configuration as shown in fig. 2, a mounting groove 21 having a flat bottom may be provided on the outer circumference of the contact arm 20, and the temperature measuring unit 11, such as the bottom of the temperature rise sensor, is generally disposed in a flat plane, so that the temperature measuring unit 11 may be fittingly mounted into the mounting groove 21. The installation part 111 with the installation hole 112 is formed on the temperature measurement unit 11, a connection hole is formed in the groove bottom of the installation groove 21 relative to the area of the installation part 111, so that when the temperature measurement unit 11 is placed in the installation groove 21, a fastener 14 such as a screw or a bolt sequentially penetrates through the installation hole 112 in the installation part 111 to enter the connection hole such as a threaded hole of the installation groove 21, the temperature measurement unit 11 is attached and connected to a tested device through the connection of the fastener 14 and the connection hole, the bottom surface of the temperature measurement unit 11 can be guaranteed to be in close contact with the groove bottom of the installation groove 21, and possible virtual overlapping risks between the temperature measurement unit 11 and the tested device are avoided.
Alternatively, the end of the mounting hole 112 of the mounting portion 111 remote from the contact arm 20 may extend radially outward such that the end of the mounting portion 111 remote from the contact arm 20 forms a receiving slot 113 that is stepped such that when the fastener 14 is tightened through the mounting hole 111 and the connection hole in the mounting groove 21 to a maximum stroke, the head of the fastener 14 may be properly received in the receiving slot 113, such that the surface of the tightened fastener 14 remote from the contact arm 20 is substantially flush with the plane of the mounting portion 111 remote from the contact arm 20 to reduce the formation of a tip or protrusion. Preferably, the mounting portion 111 may be designed as a mounting ear with a through hole formed to extend away from each other from opposite end sides of the temperature measuring unit 11, and has a simple structure and is convenient to manufacture.
As shown in fig. 1 to 3, the induction power taking sheet 12, such as a steel sheet, can penetrate through the temperature measuring unit 11, and the end portions of the induction power taking sheet located at two sides of the temperature measuring unit 11 extend around the outer periphery of the contact arm 20 along the circumferential direction of the contact arm 20 until the two end portions are overlapped for a certain length, so that the induction power taking sheet 12 is closed into a ring to form a closed magnetic loop, and power is supplied to the temperature measuring unit 11 when the contact arm 20 is electrified. The overlapping length of the two end portions of the induction power taking piece 12 can be selected according to actual requirements, and is not limited herein. Furthermore, can see that the utility model discloses well temperature measuring device 10 arrange only need for temperature measuring unit 11 the position set up mounting groove 21 can, can avoid reducing the thickness that touches arm 20 greatly to the influence to the current-carrying capacity who touches arm 20 has been avoided.
Illustratively, the temperature measuring unit 11 may include a housing, a coil built in the housing, a circuit board electrically connected to the coil, a temperature measuring probe at the bottom of the housing to abut against the device under test, and the like. The induction electricity taking piece 12 can be integrally formed with the shell, such as injection molding, and penetrates through the coil while penetrating through the shell, so that when the contact arm 20 is electrified with alternating current, a magnetic field formed by the induction electricity taking piece 12 based on an electromagnetic induction principle changes, the magnetic field passing through the coil correspondingly changes, induced electromotive force is generated by the change of the coil induced magnetic field, and accordingly oscillating alternating current is obtained, direct current converted by a rectifying circuit, a filter circuit, a voltage stabilizing circuit and the like on the circuit board is transmitted to a switch circuit on the circuit board, and then the direct current is transmitted to a temperature measuring probe and a wireless transmitting circuit on the circuit board through the switch circuit, so that electricity is taken from the electrified contact arm 20 to detect the temperature of the contact arm 20, and the detected temperature rise value is transmitted to a corresponding control device.
As shown in fig. 1 to 3, the insulating sleeve 13, such as a rubber sleeve, may be sleeved on the paired ends of the sensing pick-up piece 12, so as to tighten the paired ends of the sensing pick-up piece 12 via the friction between the ends of the sensing pick-up piece 12 and the inner wall of the insulating sleeve 13, and the friction between the outer wall of the insulating sleeve 13 and the contact arm 20 may prevent the insulating sleeve 13 from moving relative to the contact arm 20, so as to form the sensing pick-up piece 12 into a reliable closed loop. Wherein, the outer surface of the insulating sleeve 13 adjacent to the contact arm 20 may be textured to further enhance the friction between the insulating sleeve 13 and the contact arm 20. In addition, insulating cover 13 wraps its end when cramping the mated tip of induction electricity-taking piece 12 to avoided the terminal point discharge problem of induction electricity-taking piece 12, further strengthened the utility model provides an insulating properties of temperature measuring device 10.
The closed loop formed by the induction power taking sheet 12 can be roughly divided into an overlapped section 121 and a first non-overlapped section 122 and a second non-overlapped section 123 which are positioned at two sides of the overlapped section and separated by the temperature measuring unit 11.
Illustratively (not shown), the number of the insulating sleeves 13 may be designed to be one, and then the insulating sleeves 13 may extend from a region of the first non-overlapping section 122 of the induction power taking piece 12 adjacent to the overlapping section 121 to a region of the second non-overlapping section 123 adjacent to the overlapping section 121, so as to simultaneously pinch both ends of the induction power taking piece 12 and cover both ends of the induction power taking piece 12. It is understood that the extension length of the insulating sheath 13 on the first uncouplable section 122 and the second uncouplable section 123 can be selected according to practical needs and is not limited herein.
Alternatively, as shown in fig. 1 to 3, the number of the insulating sleeves 13 may be designed to be two for fixing both end portions of the induction power taking piece 12, respectively. Since the connection manner between each insulating sleeve 13 and the end of the induction power receiving piece 12 is the same, the connection between one of the insulating sleeves 13 and the end of the corresponding induction power receiving piece 12 will be described as an example. The insulating sleeve 13 may extend from an area of the first non-overlapping section 122 of the induction power taking piece 12 adjacent to the overlapping section 121 to an area of the overlapping section 121 adjacent to the first non-overlapping section 122, so as to pinch an end of the induction power taking piece 12 located in the overlapping section 121 and wrap a terminal at a junction of the first non-overlapping section 122 and the overlapping section 121. Accordingly, the extension lengths of the insulating sleeve 13 on the first non-overlapped section 122 and the overlapped section 121 of the induction power taking sheet 12 can be selected according to actual requirements, and preferably, the extension lengths on the first non-overlapped section 122 and the overlapped section 121 are the same.
Optionally, although the above-mentioned device to be tested is described by taking the contact arm 20 of the circuit breaker as an example, the temperature measuring device 10 of the present invention can also be applied to other types of devices to be tested, such as a conducting bar with a planar outer surface, such as a busbar, and it can be seen that the mounting groove 21 is formed on the busbar without slotting.
It should be understood that although the description is in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes, modifications and combinations that may be made by those skilled in the art without departing from the spirit and principles of the invention should be considered within the scope of the invention.
Claims (10)
1. A temperature measuring device (10) mounted to a device under test to detect a temperature of the device under test when the device under test is powered on, the temperature measuring device (10) comprising:
a temperature measuring unit (11) with a mounting part (111), the temperature measuring unit (11) being configured to be securely connected to the device under test by means of the mounting part (111) so that the temperature measuring unit (11) is in close contact with the device under test;
the temperature measuring unit (11) is provided with a pair of end portions, the pair of end portions of the induction power taking piece (12) are located on two sides of the temperature measuring unit (11), and the pair of end portions of the induction power taking piece (12) extend along the periphery of the device to be measured so as to enable the induction power taking piece (12) to be closed into a ring, so that power is supplied to the temperature measuring unit (11) when the device to be measured is electrified;
the insulating sleeve (13) hoops the paired ends of the induction power taking sheet (12) tightly and covers the two tail ends of the induction power taking sheet (12).
2. Temperature measuring device (10) according to claim 1, characterized in that said insulating sheath (13) is one in number.
3. The thermometric apparatus (10) according to claim 1, wherein the number of said insulating sleeves (13) is designed to be two, and two of said insulating sleeves (13) are designed to respectively pinch both ends of said induction power-taking piece (12) and to cover both ends of said induction power-taking piece (12).
4. Thermometric apparatus (10) according to claim 1, wherein said inductive pick-up sheet (12) is designed as a steel sheet.
5. The thermometric apparatus (10) according to claim 1, wherein the inductive power strip (12) is injection molded with the thermometric unit (11).
6. The thermometric apparatus (10) according to claim 1, wherein the mounting portion (111) of the thermometric unit (11) is designed as a mounting ear for the fastener (14) to pass through protruding transversely to the two sides of the induction pick-up strip (12).
7. The thermometric apparatus (10) of claim 6, wherein said fasteners (14) are designed as screws.
8. A contact arm (20), characterized in that the contact arm (20) is fitted on its outer circumference with a temperature measuring device (10) according to any one of claims 1 to 7.
9. Contact arm (20) according to claim 8, characterized in that the contact arm (20) is provided with a mounting groove (21) on its outer circumference for mounting a temperature measuring unit (11) of the temperature measuring device (10).
10. Contact arm (20) according to claim 9, characterized in that a connection hole for connecting a fastening element (14) is provided in the mounting groove (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022190658.7U CN213779316U (en) | 2020-09-29 | 2020-09-29 | Temperature measuring device and contact arm with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022190658.7U CN213779316U (en) | 2020-09-29 | 2020-09-29 | Temperature measuring device and contact arm with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213779316U true CN213779316U (en) | 2021-07-23 |
Family
ID=76907115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022190658.7U Active CN213779316U (en) | 2020-09-29 | 2020-09-29 | Temperature measuring device and contact arm with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213779316U (en) |
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2020
- 2020-09-29 CN CN202022190658.7U patent/CN213779316U/en active Active
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