CN216695338U - Cubical switchboard plum blossom contact temperature measuring device - Google Patents
Cubical switchboard plum blossom contact temperature measuring device Download PDFInfo
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- CN216695338U CN216695338U CN202220345859.6U CN202220345859U CN216695338U CN 216695338 U CN216695338 U CN 216695338U CN 202220345859 U CN202220345859 U CN 202220345859U CN 216695338 U CN216695338 U CN 216695338U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
A switch cabinet tulip contact temperature measuring device belongs to the technical field of switch cabinet temperature measuring devices. The method is characterized in that: the temperature-sensing device comprises a contact finger (2) and a temperature-sensing sensor (5), wherein the contact finger (2) and the temperature-sensing sensor (5) are both in a ring shape, and one end of the contact finger (2) is detachably connected with one end of the temperature-sensing sensor (5); the temperature measuring device of the temperature sensing sensor (5) is annular, the temperature measuring elements are coaxially arranged on the inner wall of the contact finger (2) and detachably connected with the inner wall of the contact finger (2), and the control device of the temperature sensing sensor (5) is symmetrically provided with two temperature sensors (5). The temperature measuring device and the contact finger are made into an integrated structure, so that the problem that the temperature measuring mode of the conventional temperature measuring device is mainly a sensor binding type structure, the distribution characteristic of an electric field is changed, and the hidden trouble of insulation failure is avoided; the control device is arranged on two sides of the temperature sensing sensor, is suitable for circuit breakers of different specifications, and is convenient to construct and install on site.
Description
Technical Field
A switch cabinet tulip contact temperature measuring device belongs to the technical field of switch cabinet temperature measuring devices.
Background
The switch cabinet is an important electrical device for power generation, transmission, distribution and electric energy control in an electric power system, and the working reliability of the switch cabinet is related to the safe operation of the whole power grid system. Current-carrying elements in a high-voltage switch cabinet often have the condition of larger current in the operation process, so that the switch cabinet generates heat seriously in the operation process, the temperature rise is fast, and along with the rise of the temperature, the safe operation of equipment in the cabinet is greatly threatened, therefore, the temperature in the switch cabinet must be controlled, and the normal operation of the switch cabinet can be ensured. The heating part in the high-voltage switch cabinet mainly comprises a movable contact, a fixed contact, a connecting area, a lower outlet wire and soft connecting area of a solid-sealed polar pole and a conductor joint area. The circuit breaker handcart sound contact passes through pressure connection and encapsulates in the contact box inner chamber, is whole cubical switchboard most important, weakest link, also is the link that the most easily goes wrong. In order to avoid the accidents, the temperature rise states of the movable and static contacts of the handcart of the breaker of the switch cabinet are monitored on line, and advance prediction is realized. The high-voltage switch cabinet is of a metal sealing structure, and a conventional infrared temperature measurement means cannot measure the plum blossom contact and cannot acquire heating information in real time.
The plum blossom contact temperature measurement mode of the switch cabinet mainly takes sensor binding or mounting. The binding mode is used for directly binding the sensor on the plum blossom contact and acquiring electric energy by utilizing the electromagnetic induction principle, so that the construction is convenient and fast, and no extra equipment is required to be added; however, the sensor needs to be firmly bound on the tulip contact, so that the plugging and unplugging of the tulip contact are adversely affected, the electric field distribution characteristic of the circuit breaker is changed, and the insulation fault is easily caused. The surface acoustic wave and RFID modes are mainly used in the sensor mounting mode, the sensor only needs to be pasted or clamped on the plum blossom contact during construction, a radio frequency antenna needs to be arranged in a switch cabinet breaker chamber and is influenced by the internal structure of a switch cabinet, the area of the antenna for receiving signals is large, and the installation is inconvenient.
Disclosure of Invention
The technical problem to be solved by the utility model is as follows: the utility model overcomes prior art's not enough provides a cubical switchboard plum blossom contact temperature measuring device who realizes cubical switchboard temperature on-line measuring function, security and stability are high.
The technical scheme adopted by the utility model for solving the technical problems is as follows: this cubical switchboard plum blossom contact temperature measuring device, its characterized in that: the temperature-sensing device comprises a contact finger and a temperature-sensing sensor, wherein the contact finger and the temperature-sensing sensor are both annular, and one end of the contact finger is detachably connected with one end of the temperature-sensing sensor;
the temperature measuring element of the temperature sensing sensor is annular, the temperature measuring element is coaxially arranged on the inner wall of the contact finger and is detachably connected with the inner wall of the contact finger, and the control device of the temperature sensing sensor is provided with two temperature sensors symmetrically arranged on two sides of the temperature sensing sensor.
Preferably, a rubber plate is arranged between the contact finger and the temperature measuring element, so that the temperature measuring element and the contact finger are in interference fit.
Preferably, the touch device further comprises a spring ring, an inner concave portion is arranged around the outer wall of the touch finger, and the spring ring is arranged in the inner concave portion.
Preferably, the temperature sensor comprises a shell and a control device, the shell is annular, two installation cavities for installing the control device are arranged in the shell, the two installation cavities are symmetrically arranged on two sides of the shell, the control device is installed in each installation cavity, the shell is detachably connected with the contact finger, and the control device is connected with the temperature measuring element.
Preferably, the casing include shell and apron, shell and apron are ring shape, the shell is kept away from to touch the one end that indicates and is provided with annular spread groove, apron detachable links to each other with the shell to seal the spread groove, the width increase of the relative both sides of spread groove forms the installation cavity touches and is provided with connecting device between indicating and the spread groove.
Preferably, the connecting device comprises a stud arranged on the contact finger and a nut arranged in the connecting groove, and the stud extends into the connecting groove and is in threaded connection with the nut.
Preferably, the control device comprises a control module, a power module and a power-taking loop, one end of the power-taking loop is used for being connected with the switch cabinet loop, the other end of the power-taking loop is connected with the power module, and the power module is connected with the control module.
Compared with the prior art, the utility model has the beneficial effects that:
according to the switch cabinet tulip contact temperature measuring device, the temperature measuring element and the contact finger are made into an integrated structure, so that the problem that the potential hazard of insulation fault is avoided due to the fact that the distribution characteristic of an electric field is changed by mainly using a sensor binding type structure in the temperature measuring mode of the conventional temperature measuring device is solved; the control device is arranged on two sides of the temperature sensing sensor, is suitable for circuit breakers of different specifications, and is convenient to construct and install on site.
Drawings
Fig. 1 is a schematic front sectional view of a tulip contact temperature measuring device of a switch cabinet.
Fig. 2 is a schematic cross-sectional view of a finger.
Fig. 3 is a right-view schematic diagram of the contact finger.
Fig. 4 is a perspective view of the housing.
Fig. 5 is a top view of the housing.
Fig. 6 is a perspective view of the cover plate.
Fig. 7 is a schematic top view of the cover plate.
In the figure: 1. spring ring 2, contact finger 201, concave part 3, stud 4, nut 5, temperature-sensing sensor 6, shell 601, connecting groove 602, installation cavity 7, control module 8, power module 9, get electric loop 10, apron 1001, connecting portion.
Detailed Description
The present invention is further described with reference to the following detailed description, however, it should be understood by those skilled in the art that the detailed description given herein with respect to the accompanying drawings is for better explanation and that the present invention is not necessarily limited to the specific embodiments, but rather, for equivalent alternatives or common approaches, may be omitted from the detailed description, while still remaining within the scope of the present application.
Fig. 1 to 7 are preferred embodiments of the present invention, and the present invention will be further described with reference to fig. 1 to 7.
A temperature measuring device for a plum blossom contact of a switch cabinet comprises a contact finger 2 and a temperature sensor 5, wherein the contact finger 2 and the temperature sensor 5 are both in a ring shape, and one end of the contact finger 2 is detachably connected with one end of the temperature sensor 5; the temperature measuring element of the temperature sensing sensor 5 is in a ring shape, is coaxially arranged on the inner wall of the contact finger 2 and is detachably connected with the inner wall of the contact finger 2, and the control device of the temperature sensing sensor 5 is provided with two temperature sensors symmetrically arranged on two sides of the temperature sensing sensor 5. According to the switch cabinet tulip contact temperature measuring device, the temperature measuring element and the contact finger 2 are made into an integrated structure, so that the problem that the potential hazard of insulation fault is avoided due to the fact that the distribution characteristic of an electric field is changed by mainly using a sensor binding type structure in the temperature measuring mode of the conventional temperature measuring device is solved; the control device is arranged on two sides of the temperature sensing sensor, is suitable for circuit breakers of different specifications, and is convenient to construct and install on site.
Specifically, the method comprises the following steps: as shown in FIGS. 1 to 3: the contact finger 2 is in a ring shape, an inward convex boss is arranged on the inner wall of the left end of the surrounding contact finger 2, and an inward bent part is arranged on the inner wall of the right end of the surrounding contact finger 2 to form a barb shape. A connecting device is arranged between the right end of the contact finger 2 and the left end of the temperature sensor 5.
This cubical switchboard plum blossom contact temperature measuring device still includes spring coil 1, encircles and touches 2 outer walls of finger and be provided with interior concave part 201, and spring coil 1 sets up in interior concave part 201. Concave portion 201 is provided with a plurality of along touching the axial interval that indicates 2, all is provided with spring coil 1 in each concave portion 201, and in this embodiment, concave portion 201 has the symmetry to set up and is touching two sets of that indicate 2 both ends, and every group concave portion 201 all includes two that just the interval set up side by side.
The temperature measuring elements are annular, the two temperature measuring elements are arranged along the axial direction of the contact finger 2, each temperature measuring element is coaxially arranged in the contact finger 2, a rubber plate is arranged between each temperature measuring element and the contact finger 2, the temperature measuring elements are in interference fit with the contact fingers 2, and the elasticity of the rubber plates is utilized to fix the temperature measuring elements reliably.
As shown in FIGS. 4-7: the temperature sensor 5 comprises a shell and a control device, the shell is annular, the shell is internally provided with two installation cavities 602 for installing the control device, the two installation cavities 602 are symmetrically arranged on two sides of the shell, the control device is arranged in each installation cavity 602, the shell is detachably connected with the contact finger 2, and the control device is connected with the temperature measuring element.
The casing includes shell 6 and apron 10, and shell 6 and apron 10 are the ring shape, and shell 6 is kept away from to be provided with annular spread groove 601 on the terminal surface that touches and indicates 2, and in connecting device one end stretched into spread groove 601 to be connected with shell 6 detachable, the other end with touch the terminal surface fixed connection who indicates 2. The opposite both sides of spread groove 601 are provided with the installation cavity 602 that the width increases, and apron 10 is the ring shape, and the opposite both sides of apron 10 are provided with the connecting portion 1001 with installation cavity 602 matched with, and connecting portion 1001 passes through bolt and shell 6 detachable connection. Each of the mounting cavities 602 has a control device mounted therein, and the connecting portion 1001 protrudes toward one side of the housing 6 to form a pressing portion for pressing the control device.
The width that spread groove 601 is close to one side of touching and indicates 2 is less than the width of opposite side, connecting device includes double-screw bolt 3 and nut 4, double-screw bolt 3 sets up along the axial that touches and indicates 2, the one end of double-screw bolt 3 links to each other with touching and indicating 2, the other end stretches into to spread groove 601 in, double-screw bolt 3 encircles and touches and indicates 2 interval equipartitions and have a plurality of, nut 4 sets up in spread groove 601, nut 4 and double-screw bolt 3 one-to-one, double-screw bolt 3 stretches into one end and nut 4 threaded connection in spread groove 601, thereby realized touching and indicated 2 and shell 6 be connected. The stud 3 is an insulating stud.
Control device includes control module 7, power module 8 and gets electric return circuit 9, gets the one end in electric return circuit 9 and links to each other with the cubical switchboard major loop, and the other end links to each other with power module 8 to get the electricity for power module 8, power module 8 links to each other with control module 7, thereby for control module 7 power supply, the temperature measurement component is the temperature measurement chip, the model of temperature measurement chip is 18B 20. The temperature measuring element is connected with the control module 7 and uploads the detected temperature signal to the control module 7.
The control module 7 comprises a temperature sampling circuit and a wireless communication module, and the power module 8 is a storage battery. The control module 7 comprises a Microcontroller (MCU), a 32-bit microprocessor integrated circuit STM32 chip developed by STMicroelectronic company is selected, the core of the control module is an Arm Cortex framework, and the control module has a plurality of I/O ports and strong functions. The power supply has ultra-low running power consumption and ultra-low standby power consumption. The low power MCU design of STM32 may reduce power consumption by reducing runtime and fast wake-up functions. The wireless communication loop circuit is a wireless radio frequency circuit, and the SI4432 wireless module is a Si4432 device adopting Silicon Laboratories. The electricity taking loop 9 adopts a small CT magnetic saturation electricity taking technology, and the control module 7 can normally work when primary current exceeds 5A.
The switch cabinet tulip contact temperature measuring device has the advantages that the temperature measuring element and the contact finger 2 are made into an integrated structure, so that the problem that the potential hazard of insulation fault is easily caused due to the fact that the distribution characteristic of an electric field is changed by a sensor binding type structure in a contact 2 temperature measuring mode is solved; the eccentric disc shell is suitable for circuit breakers of different specifications, and is convenient to construct and install on site; the temperature measuring element and the contact finger of the tulip contact are fixed, and the electric field distortion caused by adopting conductive elements such as a spring and the like is prevented through the elasticity of the rubber plate; the wireless power supply technology is adopted, so that the unchangeability of battery replacement is avoided; the wireless power supply technology is adopted, so that the isolated power supply of the high-voltage potential sensor of the temperature measuring circuit is realized; the data transmission of the temperature measuring device is realized by adopting a wireless radio frequency communication technology.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (7)
1. The utility model provides a cubical switchboard plum blossom contact temperature measuring device which characterized in that: the temperature-sensing device comprises a contact finger (2) and a temperature-sensing sensor (5), wherein the contact finger (2) and the temperature-sensing sensor (5) are both in a ring shape, and one end of the contact finger (2) is detachably connected with one end of the temperature-sensing sensor (5);
the temperature measuring device of the temperature sensing sensor (5) is annular, the temperature measuring elements are coaxially arranged on the inner wall of the contact finger (2) and detachably connected with the inner wall of the contact finger (2), and the control device of the temperature sensing sensor (5) is symmetrically provided with two temperature sensors (5).
2. The switchgear tulip contact temperature measuring device of claim 1, wherein: and a rubber plate is arranged between the contact finger (2) and the temperature measuring element, so that the temperature measuring element and the contact finger (2) are in interference fit.
3. The switchgear tulip contact temperature measuring device of claim 1, wherein: still include spring ring (1), encircle and touch and indicate (2) outer wall and be provided with interior concave part (201), spring ring (1) sets up in interior concave part (201).
4. The switchgear tulip contact temperature measuring device of claim 1, wherein: the temperature-sensing sensor (5) comprises a shell and a control device, wherein the shell is in a circular ring shape, two installation cavities (602) for installing the control device are formed in the shell, the two installation cavities (602) are symmetrically arranged on two sides of the shell, the control device is installed in each installation cavity (602), the shell is detachably connected with the contact finger (2), and the control device is connected with the temperature measuring element.
5. The switchgear tulip contact temperature measuring device of claim 4, wherein: the casing include shell (6) and apron (10), shell (6) and apron (10) are the ring shape, the one end that touches finger (2) is kept away from in shell (6) is provided with annular spread groove (601), apron (10) detachable links to each other with shell (6) to seal spread groove (601), the width increase of the relative both sides of spread groove (601), form installation cavity (602) is provided with connecting device between touching finger (2) and spread groove (601).
6. The switchgear tulip contact temperature measuring device of claim 5, wherein: the connecting device comprises a stud (3) arranged on the contact finger (2) and a nut (4) arranged in the connecting groove (601), wherein the stud (3) extends into the connecting groove (601) and is in threaded connection with the nut (4).
7. The switchgear tulip contact temperature measuring device of claim 1, wherein: the control device comprises a control module (7), a power module (8) and a power taking loop (9), one end of the power taking loop (9) is used for being connected with the switch cabinet loop, the other end of the power taking loop is connected with the power module (8), and the power module (8) is connected with the control module (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220345859.6U CN216695338U (en) | 2022-02-21 | 2022-02-21 | Cubical switchboard plum blossom contact temperature measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220345859.6U CN216695338U (en) | 2022-02-21 | 2022-02-21 | Cubical switchboard plum blossom contact temperature measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN216695338U true CN216695338U (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220345859.6U Active CN216695338U (en) | 2022-02-21 | 2022-02-21 | Cubical switchboard plum blossom contact temperature measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115752583A (en) * | 2022-11-21 | 2023-03-07 | 珠海一多监测科技有限公司 | Thin sensor, movable contact assembly and switch cabinet |
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2022
- 2022-02-21 CN CN202220345859.6U patent/CN216695338U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115752583A (en) * | 2022-11-21 | 2023-03-07 | 珠海一多监测科技有限公司 | Thin sensor, movable contact assembly and switch cabinet |
| CN115752583B (en) * | 2022-11-21 | 2023-08-29 | 珠海一多监测科技有限公司 | Thin sensor, moving contact assembly and switch cabinet |
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