CN218068231U

CN218068231U - Drop-out quick-break switch detection equipment

Info

Publication number: CN218068231U
Application number: CN202221978405.9U
Authority: CN
Inventors: 王国博; 王军勇; 杜佳奇
Original assignee: China Shipbuilding Anzhi Hubei Technology Co ltd
Current assignee: China Shipbuilding Anzhi Hubei Technology Co ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-12-16
Anticipated expiration: 2032-07-26

Abstract

The utility model provides a drop-out quick-break switch detection device, which comprises a base, wherein a display base is arranged on the base, and three display screens are arranged on the display base in parallel; a contact head is arranged in front of each display screen on the base, and a circuit breaking switch is arranged at the position, close to the display base, of each contact head on the base; the device is internally provided with a circuit which comprises a direct-current power supply, the high-voltage side of the direct-current power supply is connected with a resistor to be measured, a measuring point is arranged on the resistor to be measured, which is close to the low-voltage side of the direct-current power supply, and a circuit breaker and a protective resistor are arranged between the measuring point and the low-voltage side. The device can independently measure the voltage of each measuring point at the same time, reduces the personal error of each measurement, and enables the measurement to be more objective and have better consistency; and compared with the original method, the detection efficiency is greatly improved, and the production progress is accelerated.

Description

Drop-out quick-break switch detection equipment

Technical Field

The utility model relates to a switch check out test set technical field especially relates to a drop out quick-break switch check out test set.

Background

The drop-out switch is the most commonly used short-circuit protection switch for 10kV/12KV distribution line branch lines and distribution transformers, has the characteristics of economy, convenient operation, strong adaptability to outdoor environment and the like, and is widely applied to the primary side of the 10kV/12KV distribution line and the distribution transformers for protection and equipment switching and switching operation.

When the drop-out quick-break switch is detected, internal resistance values of each contact point and each part need to be measured, if an ohmmeter is adopted to directly measure the resistance, the error is very large, the production requirement cannot be met, if the measurement accuracy needs to be ensured, the universal meter is used for testing the voltage of each contact point respectively under the power-on working condition, the operation is very inconvenient, the production efficiency is low, the artificial error of each measurement is large, and the consistency is poor.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a drop-out quick-break switch detection device, which can reduce the human error of each measurement, and make the measurement more objective and more consistent; and compared with the original method, the detection efficiency is greatly improved, and the production progress is accelerated.

The utility model discloses a first aspect provides a drop-out quick-break switch detection equipment internal circuit, including DC power supply, the DC power supply high pressure side is connected with three resistance respectively, is first resistance, second resistance and fourth resistance respectively; the end point of the first resistor, which is far away from the high-voltage side of the direct-current power supply, is connected with a first breaker, and the end point of the first breaker, which is far away from the first resistor, is connected with the low-voltage side of the direct-current power supply; the end point of the second resistor, which is far away from the high-voltage side of the direct-current power supply, is connected with a second circuit breaker, and the end point of the second circuit breaker, which is far away from the second resistor, is connected with the low-voltage side of the direct-current power supply; the end point of the fourth resistor, which is far away from the high-voltage side of the direct-current power supply, is connected with a third resistor, and the end point of the third resistor, which is far away from the fourth resistor, is connected with the low-voltage side of the direct-current power supply; a third circuit breaker is arranged between the end point of the third resistor close to the high-voltage side of the direct-current power supply and the end point of the second resistor far away from the high-voltage side of the direct-current power supply; the end point of the fourth resistor far away from the high-voltage side of the direct-current power supply is provided with a first measuring point, the end point of the second resistor far away from the high-voltage side of the direct-current power supply is provided with a second measuring point, and the end point of the first resistor far away from the high-voltage side of the direct-current power supply is provided with a third measuring point.

The second aspect of the utility model provides a drop-out quick-break switch detection device, which comprises a base, wherein a display base is arranged on the base, and three display screens, namely a first display screen, a second display screen and a third display screen, are arranged on the display base in parallel; the front of each display screen on the base is provided with a contact head which is a first contact head, a second contact head and a third contact head respectively; and a circuit breaker, namely a first circuit breaker, a second circuit breaker and a third circuit breaker, is arranged at the position, close to the display base, of each contact head on the base.

Furthermore, the first circuit breaking switch is connected with the first contact, the second circuit breaking switch is connected with the second contact, and the third circuit breaking switch is connected with the third contact.

Further, the voltage of the dc power supply is 12V.

Furthermore, the first resistor, the second resistor and the fourth resistor are internal resistors of the detected device, and the third resistor is an internal resistor of the drop-out quick-break switch detection device.

Furthermore, the first circuit breaker is a third circuit breaker, the second circuit breaker is a second circuit breaker, and the third circuit breaker is a first circuit breaker.

Furthermore, the indication number of the first display screen is the voltage of the first measuring point, the indication number of the second display screen is the voltage of the second measuring point, and the indication number of the third display screen is the voltage of the third measuring point.

Furthermore, the power supply mode of the direct current power supply is a battery pack or a transformer rectifier.

Further, the base is wrapped by flexible insulating materials.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the contact heads, the circuit breakers and the display screens of the device are in one-to-one correspondence, and corresponding data are visually displayed during measurement;

2. after the device is connected, the voltage of the corresponding measuring point can be measured only by opening and closing the breaker, and the operation is simple and quick;

3. the voltage of every measuring point can independently be measured to the gauge of this device simultaneously, can effectively reduce because of the access measurement error that causes the influence to lead to the fact circuit structure in the gradation.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic circuit diagram of an embodiment of the present invention.

In the above drawings: 1. a base; 2. a display base; 3. a display screen; 4. a contact head; 5. a cut-off switch; 30. a first display screen; 31. a second display screen; 32. a third display screen; 40. a first contact; 41. a second contact; 42. a third contact; 50. a first cut-off switch; 51. a second cut-off switch; 52. a third disconnection switch; a. a first measurement point; b. A second measurement point; c. a third measurement point; r1, a first resistor; r2 and a second resistor; r3 and a third resistor; r4 and a fourth resistor; s0, a first breaker; s1, a second circuit breaker; s2, a third breaker.

Detailed Description

The technical solution of the present invention is further explained with reference to the drawings and the embodiments.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1, an internal circuit of a drop-out quick-break switch detection device includes a dc power supply, where the high-voltage side of the dc power supply is connected with three resistors, namely a first resistor R1, a second resistor R2, and a fourth resistor R4; the end point of the first resistor R1 far away from the high-voltage side of the direct-current power supply is connected with a first breaker S0, and the end point of the first breaker S0 far away from the first resistor R1 is connected with the low-voltage side of the direct-current power supply; the end point of the second resistor R2 far away from the high-voltage side of the direct-current power supply is connected with a second circuit breaker S1, and the end point of the second circuit breaker S1 far away from the second resistor R2 is connected with the low-voltage side of the direct-current power supply; the end point of the fourth resistor R4 far away from the high-voltage side of the direct-current power supply is connected with a third resistor R3, and the end point of the third resistor R3 far away from the fourth resistor R4 is connected with the low-voltage side of the direct-current power supply; a third circuit breaker S2 is arranged between the end point of the third resistor R3 close to the high-voltage side of the direct-current power supply and the end point of the second resistor R2 far away from the high-voltage side of the direct-current power supply; the end point of the fourth resistor R4 far away from the high-voltage side of the direct-current power supply is provided with a first measuring point a, the end point of the second resistor R2 far away from the high-voltage side of the direct-current power supply is provided with a second measuring point b, and the end point of the first resistor far away from the high-voltage side of the direct-current power supply is provided with a third measuring point c. The circuit measures the potential difference between two sides of the resistor by the principle that the series current is consistent and the parallel voltage is consistent, and it needs to be noted that the value of the first resistor R1 in the circuit is large, so that the circuit is detected by adopting a voltage drop method. Voltages of three points a, b and c are measured by operating the on-off states of the first breaker S0, the second breaker S1 and the third breaker S2, a corresponding measurement point truth table is obtained, and the state of the drop-out quick-break switch can be judged quickly and visually through the truth table. When the first circuit breaker S0, the second circuit breaker S1 and the third circuit breaker S2 are in an open state, the measurement power supplies of the three measurement points b and c are all power supply voltages, the voltage of the measurement point a is not the power supply voltage nor 0, and at this time, the situation that each resistor is not open is explained; if the index of the measuring point b or c is 0, the resistance at the corresponding measuring point is open, and if the index of the measuring point a is 0, the fourth resistance R4 is open or the third resistance is short. The first breaker S0 is closed, the reading of the measuring point c is 0, and if the reading is not 0, the first resistor R1 is short-circuited; the second breaker S1 is closed, the reading of the measuring point b is 0, and if the reading is not 0, the second resistor R2 is short-circuited; only the third circuit breaker S2 is closed, the voltage readings of the measuring points a and b are consistent, the readings of the point a before and after the circuit is opened are changed and are not the power supply voltage, if the readings after the circuit is closed are the power supply voltage, the second resistor R2 is opened, and if the readings after the circuit is closed are not changed, the second resistor R2 is opened; the second breaker S1 and the third breaker S2 are closed at the same time, and the indication of the measurement point a should be 0, if not 0, it indicates that the fourth resistor R4 is short-circuited. The switching situation not mentioned above means that the switching of other circuit breakers has no influence on the situation.

As shown in fig. 2, an embodiment of the present invention provides a drop-out quick-break switch detection device, which includes a base 1, a display base 2 is disposed on the base 1, and three display screens 3, namely a first display screen 30, a second display screen 31, and a third display screen 32, are disposed on the display base 2 in parallel; a contact head 4, namely a first contact head 40, a second contact head 41 and a third contact head 42, is arranged in front of each display screen 3 on the base 1; each contact 4 on the base 1 is provided with a cut-off switch 5, which is a first cut-off switch 50, a second cut-off switch 51 and a third cut-off switch 52, at a position close to the display base 2.

As shown in fig. 1, the first disconnecting switch 50 is preferably connected to the first contact 40, the second disconnecting switch 51 is preferably connected to the second contact 41, and the third disconnecting switch 52 is preferably connected to the third contact 42. I.e. each disconnector 5 in front of the contact 4 controls whether the contact is connected to the circuit.

Preferably, the voltage of the dc power supply is 12V.12V is lower than the safe voltage 36V, so that the personal safety is ensured, the measurement accuracy is guaranteed, and the voltage is also a general voltage under many conditions, such as a vehicle-mounted power supply.

As shown in fig. 2, the first resistor R1, the second resistor R2, and the fourth resistor R4 are preferably internal resistors of the device to be detected, and the third resistor R3 is preferably an internal resistor of the drop-out type quick-break switch detection apparatus. In addition to serving as a resistance measurement reference, the third resistor R3 also protects the device in the event of a short circuit due to improper operation or circuit failure.

As shown in fig. 1-2, preferably, the first disconnecting switch 50 is a third breaker S2, the second disconnecting switch 51 is a second breaker S1, and the third disconnecting switch 52 is a first breaker S0. It should be noted that the naming order of the components in the circuit is opposite to the naming order of the components on the device.

As shown in fig. 1-2, it is preferable that the first display 30 indicates the voltage of the first measurement point a, the second display 31 indicates the voltage of the second measurement point b, and the third display 32 indicates the voltage of the third measurement point c. Precisely, a single point on the circuit is free from potential difference, and the display screen 3 displays the potential difference from the corresponding measurement point to the low-voltage side of the direct-current power supply.

Preferably, the power supply mode of the direct current power supply is a 12V battery pack or a 220V/12V buck rectifier.

Preferably, the base 1 is externally wrapped with a flexible insulating material. Base 1 itself adopts plastic casing, and the parcel silica gel cover further strengthens insulating properties in order to protect operating personnel's safety.

Finally, it is noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides a drop out quick-break switch check out test set which characterized in that: the high-voltage side of the direct-current power supply is respectively connected with three resistors, namely a first resistor (R1), a second resistor (R2) and a fourth resistor (R4); the end point of the first resistor (R1), which is far away from the high-voltage side of the direct-current power supply, is connected with a first circuit breaker (S0), and the end point of the first circuit breaker (S0), which is far away from the first resistor (R1), is connected with the low-voltage side of the direct-current power supply; the end point of the second resistor (R2) far away from the high-voltage side of the direct-current power supply is connected with a second circuit breaker (S1), and the end point of the second circuit breaker (S1) far away from the second resistor (R2) is connected with the low-voltage side of the direct-current power supply; the end point of the fourth resistor (R4) far away from the high-voltage side of the direct-current power supply is connected with a third resistor (R3), and the end point of the third resistor (R3) far away from the fourth resistor (R4) is connected with the low-voltage side of the direct-current power supply; a third breaker (S2) is arranged between the end point of the third resistor (R3) close to the high-voltage side of the direct-current power supply and the end point of the second resistor (R2) far away from the high-voltage side of the direct-current power supply; the end point of the fourth resistor (R4) far away from the high-voltage side of the direct-current power supply is provided with a first measuring point (a), the end point of the second resistor (R2) far away from the high-voltage side of the direct-current power supply is provided with a second measuring point (b), and the end point of the first resistor far away from the high-voltage side of the direct-current power supply is provided with a third measuring point (c).

2. The drop-out quick-break switch detection apparatus according to claim 1, characterized in that: the display screen comprises a base (1), wherein a display base (2) is arranged on the base (1), and three display screens (3) are arranged on the display base (2) in parallel and are respectively a first display screen (30), a second display screen (31) and a third display screen (32); the front of each display screen (3) on the base (1) is provided with a contact head (4), namely a first contact head (40), a second contact head (41) and a third contact head (42); and a circuit breaker (5) is arranged at the position, close to the display base (2), of each contact head (4) on the base (1), and is respectively a first circuit breaker (50), a second circuit breaker (51) and a third circuit breaker (52).

3. The drop-out quick-break switch detection apparatus according to claim 2, characterized in that: the first disconnection switch (50) is connected to the first contact (40), the second disconnection switch (51) is connected to the second contact (41), and the third disconnection switch (52) is connected to the third contact (42).

4. The drop-out quick-break switch detection apparatus according to claim 2, characterized in that: the voltage of the direct current power supply is 12V.

5. The drop-out quick-break switch detection apparatus according to claim 2, characterized in that: the first resistor (R1), the second resistor (R2) and the fourth resistor (R4) are internal resistors of a detected device, and the third resistor (R3) is an internal resistor of the drop-out quick-break switch detection equipment.

6. The drop-out quick-break switch detection apparatus according to claim 2, characterized in that: the first circuit breaker (50) is the third circuit breaker (S2), the second circuit breaker (51) is the second circuit breaker (S1), and the third circuit breaker (52) is the first circuit breaker (S0).

7. The drop-out quick-break switch detection apparatus according to claim 2, characterized in that: the display number of the first display screen (30) is the voltage of a first measuring point (a), the display number of the second display screen (31) is the voltage of a second measuring point (b), and the display number of the third display screen (32) is the voltage of a third measuring point (c).

8. The drop-out quick-break switch detection apparatus according to claim 2, characterized in that: the power supply mode of the direct current power supply is a battery pack or a step-down rectifier.

9. The drop-out quick-break switch detection apparatus according to claim 2, characterized in that: the base (1) is wrapped by a flexible insulating material.