CN215644360U - High-low temperature compensation mechanism of circuit breaker - Google Patents
High-low temperature compensation mechanism of circuit breaker Download PDFInfo
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- CN215644360U CN215644360U CN202121833671.8U CN202121833671U CN215644360U CN 215644360 U CN215644360 U CN 215644360U CN 202121833671 U CN202121833671 U CN 202121833671U CN 215644360 U CN215644360 U CN 215644360U
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Abstract
The utility model discloses a high and low temperature compensation mechanism of a circuit breaker, which is characterized in that: the device comprises a limiting lock (1), wherein the limiting lock (1) is connected with a limiting compensation sheet (2), and the limiting compensation distance a between the limiting compensation sheet (2) and the limiting lock (1) is 0.15-0.55 mm. The utility model designs the temperature compensation mechanism to compensate the maximum deformation displacement of the thermal release in high and low temperature environments so as to ensure that the relative displacement of the thermal release and the unlocking mechanism is not changed in the high and low temperature environments, and high and low temperature environment test verification is carried out according to a test method of GJB5885-2006 aviation breaker general Specification, the temperature range of the working environment of the product can reach-55 ℃ to +125 ℃, the index of the temperature range of the product is advanced at home and abroad.
Description
Technical Field
The utility model relates to the technical field of circuit breakers, in particular to a high-low temperature compensation mechanism of a circuit breaker.
Background
At present, most of circuit breakers used in the field of aviation are thermal circuit breakers, work on the thermal bimetal electric heating tripping principle, have the characteristics of small size, light weight and the like, but are easily influenced by ambient temperature in application due to the working principle attribute, and have the phenomenon of malfunction protection, so that the working reliability of the circuit breakers is influenced. Therefore, in order to ensure the working reliability of the product, a high-low temperature compensation mechanism is required to be added. The existing temperature compensation mechanism has the following defects: the structure is relatively complex, or the compensation precision is not high, and the reliability is low, for example, the temperature compensation mechanism of the circuit breaker and the circuit breaker disclosed in chinese patent CN203941869U, the temperature compensation mechanism is a U-shaped structure, and can deform along with the change of the environmental temperature, so that the distance between two U-shaped supporting legs changes, the stroke displacement of the main loop tripping mechanism is compensated, and the relative displacement between the two is ensured to be unchanged, thereby ensuring that the circuit breaker can reliably work under the condition of the specified environmental temperature range; the disadvantage is that the base is needed for installation, and the designed structure has large volume and weight, and is not suitable for aviation circuit breakers with high volume and weight requirements. .
For example, the circuit breaker with temperature compensation disclosed in chinese patent CN200993942Y, wherein the temperature compensation mechanism is a straight-piece structure, and can compensate the deformation displacement of the bimetal assembly with a sliding piece along with the temperature change of the environment, so as to ensure that the relative displacement between the two is not changed, thereby ensuring that the circuit breaker can reliably work within a specified environment temperature range; the disadvantage is that the compensation mechanism has a narrow compensation temperature range (the maximum temperature is only-55 ℃ to +85 ℃), and the application requirements of some characteristic environments cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a high-low temperature compensation mechanism of a circuit breaker. The utility model has the characteristics of simple structure, high compensation precision, wide compensation temperature range (the highest temperature can reach-55 ℃ to +125 ℃), strong environmental adaptability and suitability for the special application field of the aviation circuit breaker.
The technical scheme of the utility model is as follows: the high and low temperature compensation mechanism of the circuit breaker comprises a limiting lock, wherein the limiting lock is connected with a limiting compensation sheet, and the limiting compensation distance a between the limiting compensation sheet and the limiting lock is 0.15-0.55 mm.
According to the high-low temperature compensation mechanism of the circuit breaker, the limiting lock comprises the locking plate and the lock catch which is arranged in an inclined mode, and the limiting compensation distance a is the distance between the limiting compensation plate and the lock catch.
In the high-low temperature compensation mechanism of the circuit breaker, the inclination angles of the locking plate and the lock catch are 2-11 degrees.
In the high-low temperature compensation mechanism of the circuit breaker, the inclination angles of the locking plate and the lock catch are 5-8 degrees.
According to the high-low temperature compensation mechanism of the circuit breaker, the limiting compensation piece is divided into the connecting section, the limiting section and the extension section, the connecting section is connected with one end of the limiting lock, and the limiting compensation distance a is the distance between the limiting section and the lock catch.
According to the high-low temperature compensation mechanism of the circuit breaker, the limiting section and the connecting section are obliquely arranged, and the inclination angle is 1-20 degrees.
In the high-low temperature compensation mechanism of the circuit breaker, the other side of the limiting lock is provided with the limiting elastic sheet, the limiting elastic sheet is divided into the elastic sheet connecting section, the elastic sheet section and the hook section, the elastic sheet connecting section and the elastic sheet section are obliquely arranged, and the inclination angle is 30-60 degrees.
In the high-low temperature compensation mechanism of the circuit breaker, the elastic sheet connecting section of the limiting elastic sheet is connected with the other side of the lock catch of the limiting lock.
The elastic sheet connecting section of the limiting elastic sheet is connected with the other side of the lock catch of the limiting lock.
Has the advantages that: compared with the prior art, the utility model designs the temperature compensation mechanism to compensate the maximum deformation displacement of the thermal release in high and low temperature environments so as to ensure that the relative displacement of the thermal release and the unlocking mechanism is not changed in the high and low temperature environments, and high and low temperature environment test verification is carried out according to a test method of GJB5885-2006 aviation breaker general Specification, the temperature range of the working environment of the product can reach-55 ℃ to +125 ℃, the index of the temperature range of the product is advanced at home and abroad. The utility model utilizes the temperature sensitivity characteristic of a high-sensitivity thermal bimetal material, selects the high-sensitivity thermal bimetal material as a limiting compensation sheet material, and designs a temperature compensation structure of the high-sensitivity thermal bimetal material according to the working principle and the mechanism operation mechanism of the circuit breaker. The structure of the part of the limit compensating plate is designed into 3 sections, namely a connecting section, a limit section and an extension section. It was designed for 3-stage structural purposes: one section of the connecting section is connected with one end of the limiting lock; the limiting section is mainly used for carrying out displacement compensation on the circuit breaker tripping mechanism with smaller compensation displacement requirement, the maximum and minimum displacement travel intervals allowed between the circuit breaker tripping mechanism and the unlocking mechanism are determined through theoretical design calculation, three-dimensional motion simulation and test verification, and the limiting compensation distance a is set to be 0.15-0.55 mm; the extension section is mainly used for compensating the displacement of the tripping mechanism of the circuit breaker with larger requirement on compensation displacement, and the extension section is designed to have a certain inclination angle so as to increase the compensation displacement. When the displacement provided by the limiting section is not enough to compensate the displacement of the tripping mechanism in operation, the extension section is used for continuing to compensate, so that the tripping mechanism has the balance of relative displacement between the tripping mechanism and the unlocking mechanism under different environmental temperature conditions, and the working reliability of the circuit breaker is ensured.
Inclination angle design of locking plate and lock catch
The maximum and minimum displacement travel ranges allowed between the circuit breaker tripping mechanism and the unlocking mechanism are determined through theoretical design calculation, three-dimensional motion simulation and experimental verification, so that the inclination angles of the locking plate and the lock catch are designed to be 30-60 degrees.
The effect is achieved:
the structural design has the comprehensive technical performance index higher than the indexes of similar products in the same country, which reaches domestic leading and foreign advanced, and the ratio of the technical indexes of the circuit breakers of the similar domestic and foreign advanced manufacturers is shown in a table 1:
TABLE 1 comparison of technical indexes of circuit breakers from similar advanced manufacturers at home and abroad
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the limit lock of the present invention;
FIG. 3 is a schematic view of the direction A-A in FIG. 2;
FIG. 4 is a schematic view of FIG. 2 taken along line B-B;
fig. 5-7 are schematic views of the temperature compensating mechanism before, during and during closing and opening of the circuit breaker operating mechanism.
Detailed Description
The utility model is further illustrated by the following figures and examples, which are not to be construed as limiting the utility model.
Example 1. A high-low temperature compensation mechanism of a circuit breaker is shown in figures 1-7 and comprises a limiting lock 1, wherein the limiting lock 1 is connected with a limiting compensation piece 2, and the limiting compensation distance a between the limiting compensation piece 2 and the limiting lock 1 is 0.15-0.55 mm.
The inclination angles of the locking plate 4 and the lock catch 5 are 2-11 degrees. More preferably, the angle of inclination of the locking piece 4 and the locking catch 5 is 5-8 °. The effect of the inclination of the locking piece 4 and the locking catch 5 is: and compensating displacement limiting is carried out on the limiting section 7 within a certain compensation displacement range.
The limiting section 7 and the connecting section 6 are obliquely arranged, and the inclination angle is 1-20 degrees. The limiting section 7 is obliquely arranged, and when the compensation of the limiting section is limited, the displacement compensation can be continuously carried out.
The other side of the limiting lock 1 is provided with a limiting elastic sheet 3, the limiting elastic sheet 3 is divided into an elastic sheet connecting section 10, an elastic sheet section 11 and a hook section 9, the elastic sheet connecting section 10 and the elastic sheet section 11 are obliquely arranged, and the inclination angle is 30-60 degrees. The function is as follows: after the tripping mechanism and the unlocking mechanism are unlocked, the limiting lock mechanism can be rapidly and normally reset.
The elastic sheet connecting section 10 of the limiting elastic sheet 3 is connected with the other side of the lock catch 5 of the limiting lock 1.
The working principle is as follows: the limiting compensation sheet in the temperature compensation mechanism is made of a high-sensitivity thermal bimetal composite material and is formed by compounding 3 layers of different materials of an active layer, a middle layer and a passive layer, and the expansion coefficient of the active layer is higher than that of the passive layer. Temperature characteristics: the operation principle diagram is shown in the following figure, and black and white line drawings are provided or deleted, and the description should be given with reference to fig. 1 to 7.
Under the low temperature environment, because the thermal type circuit breaker works according to the electric heating tripping principle, the heat dissipation of the thermal tripping device is larger, the deformation displacement generated by the thermal tripping device is smaller than that generated at normal temperature, the limit compensating plate 2 in the temperature compensating mechanism is deformed and bent to one side of the passive layer under the influence of low temperature, and the displacement of the thermal tripping device which is less moved is compensated, so that the relative displacement of the thermal tripping mechanism and the unlocking mechanism is ensured to be unchanged, and the reliable unlocking tripping of the mechanism is realized.
Under the high temperature environment, because the thermal type circuit breaker works according to the electric heating tripping principle, the heat dissipation of the thermal tripping device is smaller, and the deformation displacement generated by the thermal tripping device is larger than that generated by the thermal tripping device at normal temperature, and the limit compensating plate in the temperature compensating mechanism is deformed and bent to one side of the active layer under the influence of high temperature to compensate the displacement of the thermal tripping device which is moved too much, so that the relative displacement of the thermal tripping mechanism and the unlocking mechanism is ensured to be unchanged, and the reliable unlocking tripping of the mechanism is realized.
Example 2. A high-low temperature compensation mechanism of a circuit breaker is shown in figures 1-7 and comprises a limiting lock 1, wherein the limiting lock 1 is connected with a limiting compensation piece 2, and the limiting compensation distance a between the limiting compensation piece 2 and the limiting lock 1 is 0.3 mm.
Spacing section 7 sets up with the linkage segment 6 slope, and inclination is 10.
The elastic sheet connecting section 10 of the limiting elastic sheet 3 is connected with the other side of the lock catch 5 of the limiting lock 1.
Example 3. A high-low temperature compensation mechanism of a circuit breaker is shown in figures 1-7 and comprises a limiting lock 1, wherein the limiting lock 1 is connected with a limiting compensation piece 2, and the limiting compensation distance a between the limiting compensation piece 2 and the limiting lock 1 is 0.4 mm.
Spacing compensating blade 2 divide into linkage segment 6, spacing section 7 and extension section 8, linkage segment 6 is connected with the one end of spacing lock 1, spacing compensation distance an is the distance between spacing section 7 and hasp 5.
Spacing section 7 sets up with the linkage segment 6 slope, and inclination is 15.
The elastic sheet connecting section 10 of the limiting elastic sheet 3 is connected with the other side of the lock catch 5 of the limiting lock 1.
Example 4. A high-low temperature compensation mechanism of a circuit breaker is shown in figures 1-7 and comprises a limiting lock 1, wherein the limiting lock 1 is connected with a limiting compensation piece 2, and the limiting compensation distance a between the limiting compensation piece 2 and the limiting lock 1 is 0.5 mm.
Spacing lock 1 includes locking plate 4 and the hasp 5 of slope setting, spacing compensation distance a is the distance between spacing compensation piece 2 and the hasp 5. The inclination angle of the locking plate 4 and the lock catch 5 is 4 degrees.
Spacing compensating blade 2 divide into linkage segment 6, spacing section 7 and extension section 8, linkage segment 6 is connected with the one end of spacing lock 1, spacing compensation distance an is the distance between spacing section 7 and hasp 5.
Spacing section 7 sets up with the 6 slopes of linkage segment, and inclination is 5.
The elastic sheet connecting section 10 of the limiting elastic sheet 3 is connected with the other side of the lock catch 5 of the limiting lock 1.
Claims (8)
1. The utility model provides a high low temperature compensation mechanism of circuit breaker which characterized in that: the device comprises a limiting lock (1), wherein the limiting lock (1) is connected with a limiting compensation sheet (2), and the limiting compensation distance a between the limiting compensation sheet (2) and the limiting lock (1) is 0.15-0.55 mm.
2. The high and low temperature compensation mechanism of circuit breaker according to claim 1, wherein: spacing lock (1) is including hasp (5) that locking plate (4) and slope set up, spacing compensation distance a is the distance between spacing compensation piece (2) and hasp (5).
3. The high and low temperature compensation mechanism of circuit breaker according to claim 2, wherein: the inclination angles of the locking plate (4) and the lock catch (5) are 2-11 degrees.
4. The high and low temperature compensation mechanism of circuit breaker according to claim 3, wherein: the inclination angles of the locking plate (4) and the lock catch (5) are 5-8 degrees.
5. The high and low temperature compensation mechanism of circuit breaker according to claim 1 or 2, characterized in that: spacing compensating blade (2) divide into linkage segment (6), spacing section (7) and extension section (8), linkage segment (6) are connected with the one end of spacing lock (1), spacing compensation distance an is the distance between spacing section (7) and hasp (5).
6. The high and low temperature compensation mechanism of circuit breaker according to claim 5, wherein: the limiting section (7) and the connecting section (6) are obliquely arranged, and the inclination angle is 1-20 degrees.
7. The high and low temperature compensation mechanism of circuit breaker according to claim 1, wherein: spacing shell fragment (3) are equipped with to spacing lock (1) opposite side, and spacing shell fragment (3) divide into shell fragment linkage segment (10), shell fragment section (11) and crotch section (9), and shell fragment linkage segment (10) and shell fragment section (11) slope set up, and inclination is 30-60.
8. The high and low temperature compensation mechanism of circuit breaker according to claim 7, wherein: the elastic sheet connecting section (10) of the limiting elastic sheet (3) is connected with the other side of the lock catch (5) of the limiting lock (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121833671.8U CN215644360U (en) | 2021-08-06 | 2021-08-06 | High-low temperature compensation mechanism of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121833671.8U CN215644360U (en) | 2021-08-06 | 2021-08-06 | High-low temperature compensation mechanism of circuit breaker |
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| Publication Number | Publication Date |
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| CN215644360U true CN215644360U (en) | 2022-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121833671.8U Active CN215644360U (en) | 2021-08-06 | 2021-08-06 | High-low temperature compensation mechanism of circuit breaker |
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| CN (1) | CN215644360U (en) |
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2021
- 2021-08-06 CN CN202121833671.8U patent/CN215644360U/en active Active
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