CN211265387U - Circuit breaker with line temperature sensing detects - Google Patents
Circuit breaker with line temperature sensing detects Download PDFInfo
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- CN211265387U CN211265387U CN202020133409.1U CN202020133409U CN211265387U CN 211265387 U CN211265387 U CN 211265387U CN 202020133409 U CN202020133409 U CN 202020133409U CN 211265387 U CN211265387 U CN 211265387U
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Abstract
The utility model relates to a circuit breaker with line temperature sensing detects, it includes a casing, and its both sides are established and are equipped with inlet wire end and leading-out terminal respectively, are equipped with in the casing: a switching-on and switching-off mechanism; the temperature sensor is arranged close to the wire inlet end or the wire outlet end or both of the wire inlet end and the wire outlet end and outputs a detection signal representing a temperature value; a position detection unit; and the switching-on and switching-off mechanism control unit controls the switching-on and switching-off mechanism to generate switching-off action when the temperature value is higher than a set value, controls the switching-on and switching-off mechanism to stop the switching-on and switching-off action when the position detection unit detects a detection signal representing the switching-off position, and can effectively detect the temperature rise condition of the circuit breaker during the operation period by carrying out online detection on the temperature of the wiring terminal through a temperature sensor additionally arranged in the circuit breaker, thereby preventing the circuit breaker from being damaged due to abnormal heating and avoiding the accident current caused by the misoperation of the circuit breaker. In addition, the position detection unit is used for detecting the current state of the circuit breaker, so that the phenomenon of excessive opening and closing is prevented.
Description
Technical Field
The utility model belongs to the low-voltage apparatus field, concretely relates to circuit breaker with line temperature sensing detects.
Background
When the circuit breaker is switched on, the temperature of the circuit breaker is increased due to the overcurrent state of the main circuit unit of the circuit breaker, the circuit breaker is damaged due to the increased temperature, and misoperation is possibly caused under the condition that the damage of the circuit breaker is unknown.
In many cases, the temperature of the circuit breaker is increased due to abnormal heat generation of the main circuit of the circuit breaker. When the circuit breaker generates heat in excess of normal requirements, the circuit breaker itself has been damaged and causes damage in the power transmission/distribution line by failing to interrupt the accident current. Meanwhile, the circuit breaker has no temperature detection control function at the input end and the output end, so that fire caused by overhigh temperature is frequent, and hidden danger is caused to normal power supply.
Therefore, it is very necessary to monitor the temperature of the main circuit in the circuit breaker in real time to prevent damage due to abnormal heat generation.
For temperature detection, an externally-hung structure is mostly adopted at present to detect the temperature of an input end or an output end, or the externally-hung structure is installed inside a circuit breaker and used for monitoring the temperature inside the circuit breaker.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a circuit breaker with line temperature sensing detects.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a circuit breaker with line temperature sensing detects, its includes a casing, and its both sides are established and are equipped with inlet wire end and outlet terminal respectively be equipped with in the casing:
the switching-on and switching-off mechanism is used for realizing the switching-on and switching-off of the load and the power circuit in a normal state;
the temperature sensor is arranged close to the wire inlet end or the wire outlet end or both of the wire inlet end and the wire outlet end and outputs a detection signal representing a temperature value;
the position detection unit is arranged on a path of the action of the switching-on and switching-off mechanism control unit and outputs a detection signal representing the switching-on and switching-off position of the circuit breaker;
and the switching-on and switching-off mechanism control unit controls the switching-on and switching-off mechanism to generate switching-off action when the temperature value is higher than a set value, and controls the switching-on and switching-off mechanism to stop the switching-off action when the position detection unit detects a detection signal representing the switching-off position.
The shell comprises a first shell, a middle shell and a second shell, a first accommodating space used for accommodating the switching-on/off mechanism, the temperature sensor, the wire inlet end and the wire outlet end is formed between the first shell and the middle shell, and a second accommodating space used for accommodating the position detection unit and the switching-on/off mechanism control unit is formed between the second shell and the middle shell.
The temperature sensor is an NTC temperature sensor.
One end of the temperature sensor is attached to a terminal of the wire inlet end or the wire outlet end, and the other end of the temperature sensor is electrically connected with a circuit board of the control unit of the combining and opening mechanism.
The position detection unit comprises a handle position detection unit and a breaker opening and closing detection unit.
The handle position detection unit comprises two photoelectric switches which are respectively arranged at a handle closing position and a handle separating position.
The handle linkage of divide-shut brake mechanism is equipped with the linkage, linkage one side is equipped with the first reflection of light piece that is used for triggering photoelectric switch, first reflection of light piece has the photoelectric switch's that can send the handle to close the signal first state and trigger the photoelectric switch's that can send the handle to divide the signal second state when the handle is opened brake.
The breaker opening and closing detection unit comprises two photoelectric switches which are respectively arranged at a breaker opening and closing position and a breaker opening and closing position.
The on-off mechanism control unit comprises a gear set, a gear driving the handle to rotate in the gear set is provided with a second light reflecting piece, and the second light reflecting piece has a first state which can trigger a photoelectric switch capable of sending a breaker opening signal when the breaker is opened and a second state which can trigger a photoelectric switch capable of sending a breaker closing signal when the breaker is closed.
The utility model has the advantages that: carry out on-line measuring through the temperature sensor who adds inside the circuit breaker to the temperature of binding post, can effectively detect the temperature rise condition of circuit breaker during operation to prevent the damage that the circuit breaker abnormal heating arouses, and avoid the accident current that arouses by the maloperation of circuit breaker. In addition, the position detection unit is used for detecting the current state of the circuit breaker, so that the phenomenon of excessive opening and closing is prevented.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an internal schematic view of the first accommodating space of the present invention.
Fig. 3 is an enlarged schematic view of a point a in fig. 2.
Fig. 4 is an internal schematic view of the second accommodating space of the present invention.
Fig. 5 is a schematic structural view of the link member.
Fig. 6 is a schematic circuit diagram of the temperature sensor.
Fig. 7 is a functional block diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
As shown in the figure, the utility model provides a circuit breaker with line temperature sensing detects, it includes a casing, and its both sides are established and are equipped with inlet wire end and leading-out terminal respectively, the casing includes first casing 1, middle casing 2 and second casing 3, and three casing laminates each other and constitutes a circuit breaker, in addition form the first accommodation space that is used for holding divide-shut brake mechanism, temperature sensor, inlet wire end and leading-out terminal between first casing and the middle casing, form the second accommodation space that is used for holding position detecting element and divide-shut brake mechanism the control unit between second casing and the middle casing. And the middle shell is utilized to realize the isolation between the switching-on and switching-off mechanism and the switching-on and switching-off mechanism control unit. Terminal grooves are formed at two ends of one surface of the middle shell, which is contacted with the first shell, and the wiring terminal is installed in the terminal grooves.
The shell is internally provided with:
the switching-on and switching-off mechanism is used for realizing the switching-on and switching-off of the load and the power circuit in a normal state;
the temperature sensor is arranged close to the wire inlet end or the wire outlet end or both of the wire inlet end and the wire outlet end and outputs a detection signal representing a temperature value; the temperature sensor is an NTC temperature sensor 5, a connecting pin of the NTC temperature sensor penetrates through the middle shell to be electrically connected with a circuit board of the switching-on/off mechanism control unit, and an induction end of the NTC temperature sensor is closely contacted with a terminal and used for sensing the temperature at the terminal in real time and sending the acquired temperature value to an MCU on the circuit board.
The position detection unit is arranged on a path of the action of the switching-on and switching-off mechanism control unit and outputs a detection signal representing the switching-on and switching-off position of the circuit breaker; the position detection unit comprises a handle position detection unit and a breaker opening and closing detection unit.
The handle position detection unit comprises two photoelectric switches which are respectively arranged at a handle closing position and a handle separating position.
The handle 4 linkage of divide-shut brake mechanism is equipped with linkage 9, linkage one side is equipped with the first reflector panel 10 that is used for triggering photoelectric switch, sets up a recess promptly on the linkage, arranges first reflector panel in this recess, first reflector panel has the first state that triggers the photoelectric switch that can send handle shut-in signal when the handle is closed and triggers the second state that can send the photoelectric switch of handle branch signal when the handle is opened. The handle rotates and can drive the linkage piece to move, when the handle is located at the branch position, the side face of the corresponding linkage piece is provided with a first light reflecting sheet, and under the condition that the linkage piece drives the movement at the handle, the first light reflecting sheet can be moved to the photoelectric switch 6 at the joint position by the photoelectric switch at the branch position, so that triggering of different signals is realized, and the change of the position of the handle is represented.
The breaker opening and closing detection unit comprises two photoelectric switches which are respectively arranged at a breaker opening and closing position and a breaker opening and closing position.
Divide closing mechanism the control unit include motor 7, with motor meshing's worm gear structure and gear train, the gear train then respectively with worm wheel and linkage meshing, with the action of motor to the handle on, realize divide closing operation, drive handle pivoted gear 8 in the gear train is equipped with second reflector panel 11, sets up a recess promptly on the gear, arranges this recess in with second reflector panel, second reflector panel has the photoelectric switch's that triggers can send circuit breaker branch signal first state and triggers the photoelectric switch's that can send circuit breaker combined signal second state when the circuit breaker closes the floodgate. And in the same way, when the breaker is in the opening position, the gear is correspondingly provided with a second light reflecting piece, and the second light reflecting piece moves to the photoelectric switch representing the closing position of the breaker from the photoelectric switch representing the opening position of the breaker along with the rotation of the gear, so that the detection of the opening and closing position of the breaker is realized.
And the switching-on and switching-off mechanism control unit controls the switching-on and switching-off mechanism to generate switching-off action when the temperature value is higher than a set value, and controls the switching-on and switching-off mechanism to stop the switching-off action when the position detection unit detects a detection signal representing the switching-off position.
And the MCU acquires analog quantity signals obtained by the voltage division of the NTC temperature sensor through the ADC port, and looks up the table to obtain the real-time temperature. When the temperature exceeds the set temperature value, the MCU drives the motor, and the motor drives the worm and gear to drive the gear and the actuating mechanism to act. When the position detection unit detects a tripping in-place signal, the motor is controlled to brake, and the brake-separating action is completed.
The examples should not be construed as limiting the present invention, but any modifications made based on the spirit of the present invention should be within the scope of the present invention.
Claims (9)
1. The utility model provides a circuit breaker with line temperature sensing detects, its includes a casing, and its both sides are established and are equipped with inlet wire end and outlet terminal respectively, its characterized in that: the shell is internally provided with:
the switching-on and switching-off mechanism is used for realizing the switching-on and switching-off of the load and the power circuit in a normal state;
the temperature sensor is arranged close to the wire inlet end or the wire outlet end or both of the wire inlet end and the wire outlet end and outputs a detection signal representing a temperature value;
the position detection unit is arranged on a path of the action of the switching-on and switching-off mechanism control unit and outputs a detection signal representing the switching-on and switching-off position of the circuit breaker;
and the switching-on and switching-off mechanism control unit controls the switching-on and switching-off mechanism to generate switching-off action when the temperature value is higher than a set value, and controls the switching-on and switching-off mechanism to stop the switching-off action when the position detection unit detects a detection signal representing the switching-off position.
2. The circuit breaker with line temperature sensing detection of claim 1, wherein: the shell comprises a first shell, a middle shell and a second shell, a first accommodating space used for accommodating the switching-on/off mechanism, the temperature sensor, the wire inlet end and the wire outlet end is formed between the first shell and the middle shell, and a second accommodating space used for accommodating the position detection unit and the switching-on/off mechanism control unit is formed between the second shell and the middle shell.
3. A circuit breaker with line temperature sensing detection according to claim 1 or 2, characterized in that: the temperature sensor is an NTC temperature sensor.
4. The circuit breaker with line temperature sensing detection of claim 3, wherein: one end of the temperature sensor is attached to a terminal of the wire inlet end or the wire outlet end, and the other end of the temperature sensor is electrically connected with a circuit board of the control unit of the combining and opening mechanism.
5. The circuit breaker with line temperature sensing detection of claim 1, wherein: the position detection unit comprises a handle position detection unit and a breaker opening and closing detection unit.
6. The circuit breaker with line temperature sensing detection of claim 5, wherein: the handle position detection unit comprises two photoelectric switches which are respectively arranged at a handle closing position and a handle separating position.
7. The circuit breaker with line temperature sensing detection of claim 6, wherein: the handle linkage of divide-shut brake mechanism is equipped with the linkage, linkage one side is equipped with the first reflection of light piece that is used for triggering photoelectric switch, first reflection of light piece has the photoelectric switch's that can send the handle to close the signal first state and trigger the photoelectric switch's that can send the handle to divide the signal second state when the handle is opened brake.
8. The circuit breaker with line temperature sensing detection of claim 5, wherein: the breaker opening and closing detection unit comprises two photoelectric switches which are respectively arranged at a breaker opening and closing position and a breaker opening and closing position.
9. The circuit breaker with line temperature sensing detection of claim 8, wherein: the on-off mechanism control unit comprises a gear set, a gear driving the handle to rotate in the gear set is provided with a second light reflecting piece, and the second light reflecting piece has a first state which can trigger a photoelectric switch capable of sending a breaker opening signal when the breaker is opened and a second state which can trigger a photoelectric switch capable of sending a breaker closing signal when the breaker is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020133409.1U CN211265387U (en) | 2020-01-21 | 2020-01-21 | Circuit breaker with line temperature sensing detects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020133409.1U CN211265387U (en) | 2020-01-21 | 2020-01-21 | Circuit breaker with line temperature sensing detects |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211265387U true CN211265387U (en) | 2020-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020133409.1U Active CN211265387U (en) | 2020-01-21 | 2020-01-21 | Circuit breaker with line temperature sensing detects |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211265387U (en) |
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2020
- 2020-01-21 CN CN202020133409.1U patent/CN211265387U/en active Active
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