CN210222166U - Portable fault diagnosis device for terminal box heater of transformer substation - Google Patents
Portable fault diagnosis device for terminal box heater of transformer substation Download PDFInfo
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- CN210222166U CN210222166U CN201921089776.XU CN201921089776U CN210222166U CN 210222166 U CN210222166 U CN 210222166U CN 201921089776 U CN201921089776 U CN 201921089776U CN 210222166 U CN210222166 U CN 210222166U
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- resistor
- resistance
- battery
- operational amplifier
- terminal
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Abstract
The utility model discloses a portable transformer substation terminal box heater fault diagnosis device, including battery (1), operational amplifier (2), active buzzer (3), first resistance R1 (4), second resistance R2 (5), third resistance R3 (6), test terminal a (7), test terminal b (8), and hot plate (9), battery (1) positive negative pole is inserted in proper order to both ends after second resistance R2 (5), third resistance R3 (6) are established ties, the negative input end of operational amplifier (2) is inserted to second resistance R2 (5) and third resistance R3 (6) junction; one end of the first resistor R1 (4) is connected with the anode of the battery (1), and the other end is connected with the test terminal a (7) and is connected with the positive input end of the operational amplifier (2); two ends of the active buzzer (3) are respectively connected with the output end of the operational amplifier (2) and the negative electrode of the battery (1), and the test terminal b (8) is connected with the negative electrode of the battery (1); the fault of the heater can be conveniently and quickly diagnosed.
Description
Technical Field
The utility model relates to a running state of transformer substation control field especially relates to portable transformer substation terminal box heater fault diagnosis ware.
Background
At present, a large number of terminal boxes with various functions exist in a high-voltage field of a transformer substation, the terminal boxes are the most common secondary electric junction boxes in the transformer substation, and heating plates are installed inside the terminal boxes for achieving moisture removal and heating of the terminal boxes. The heating plate is used as a fragile and consumable product, the heating plate needs to be periodically checked by operation and maintenance personnel to work normally, the checking method needs to manually start the heating plate to work, and after a few minutes, the surface temperature of the heating plate is manually checked to rise, so that whether the heating plate breaks down is diagnosed; the method has the defects of personnel scalding risk, long time consumption, low efficiency and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a portable transformer substation terminal box heater fault diagnostor solves and is unsafe among the current method, consuming time long, the problem of inefficiency.
The utility model discloses a realize like this, portable transformer substation terminal box heater fault diagnosis ware, including battery, operational amplifier, active buzzer, first resistance R1, second resistance R2, third resistance R3, test terminal a, test terminal b and hot plate, both ends insert in proper order the battery positive negative pole after second resistance R2, third resistance R3 are established ties, constitute resistance bleeder circuit, the negative input end of operational amplifier is inserted to second resistance R2 and third resistance R3 junction; one end of the first resistor R1 is connected with the positive electrode of the battery, and the other end is connected with the test terminal a and is connected with the positive input end of the operational amplifier; two ends of the active buzzer are respectively connected with the output end of the operational amplifier and the negative electrode of the battery; the test terminal b is directly connected with the negative electrode of the battery.
The testing device comprises a battery, an operational amplifier, an active buzzer, a first resistor R1, a second resistor R2 and a third resistor R3, wherein a testing terminal a and a testing terminal b are welded on a circuit board, circuit connection is carried out in the circuit board through the connection mode, meanwhile, a groove is formed in the circuit board, the testing terminal is connected into an electric loop through a telescopic connecting wire, and the distance between the testing terminal and a binding post of a heater to be tested in the groove is freely adjusted.
The utility model has the advantages that: the utility model has the advantages of light structure, convenient carrying, and capability of realizing rapid fault diagnosis of all different types of terminal box heating plates of the transformer substation; the diagnosis process is quick, and the diagnosis result can be immediately fed back to operation and maintenance personnel through the buzzer, so that the operation efficiency and accuracy are greatly improved; meanwhile, the direct contact between operation and maintenance personnel and the heating plate is avoided, the scalding risk is avoided, and the operation safety is improved.
Drawings
Fig. 1 is a schematic circuit diagram of the fault diagnosis device for the terminal box heater of the portable transformer substation.
In the figure, 1, a battery; 2. an operational amplifier; 3. an active buzzer; 4. a first resistor R1; 5. A second resistor R2; 6. a third resistor R3; 7. a test terminal a; 8. a test terminal b; 9. heating the plate.
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 work belong to the protection scope of the present invention.
Referring to fig. 1, the second resistor R2 and the third resistor R3 are connected in series and then connected to the positive and negative terminals of the power supply to form a resistor divider circuit, and the connection between the second resistor R2 and the third resistor R3 is connected to the negative input terminal of the operational amplifier 2; one end of the first resistor R1 is connected with the positive electrode of the battery 1, and the other end is connected with the test terminal a and is connected with the positive input end of the operational amplifier 2; two ends of the active buzzer 3 are respectively connected with the output end of the operational amplifier 2 and the negative electrode of the battery 1; the test terminal b is directly connected to the negative electrode of the battery 1.
The testing device comprises a battery, an operational amplifier, an active buzzer, a first resistor R1, a second resistor R2 and a third resistor R3, wherein a testing terminal a and a testing terminal b are welded on a circuit board, circuit connection is carried out in the circuit board through the connection mode, meanwhile, a groove is formed in the circuit board, the testing terminal is connected into an electric loop through a telescopic connecting wire, and the distance between the testing terminal and a binding post of a heater to be tested in the groove is freely adjusted.
The basic principle of the circuit is as follows: detecting the resistance between the test terminal a and the test terminal b, and when the resistance to be detected is greater than a preset resistance value, sounding by the buzzer 3; the predetermined resistance value can be calculated by selecting appropriate resistance values of the first resistor R1, the second resistor R2 and the third resistor R3, and the calculation formula is as follows: rx = (R1 × R3)/R2.
The test terminal a and the test terminal b are connected into the electric loop through the telescopic connecting wire and adjusted according to the wiring terminal distance of the heating plate to be tested. When the testing device is used, an operator reliably contacts the testing terminal a and the testing terminal b with two binding posts on the heating plate; if the heating plate to be detected works normally, the active buzzer 3 does not sound; if the heating plate 9 to be tested is damaged and cannot work normally, the active buzzer 3 sounds to remind a test operator; the test result can be known by intuitively listening whether the active buzzer 3 sounds or not.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. Portable transformer substation terminal box heater fault diagnosis ware, including battery (1), operational amplifier (2), active buzzer (3), first resistance R1 (4), second resistance R2 (5), third resistance R3 (6), test terminal a (7), test terminal b (8) and hot plate (9), its characterized in that: after the second resistor R2 (5) and the third resistor R3 (6) are connected in series, the two ends of the second resistor R2 and the third resistor R3 (6) are sequentially connected to the positive electrode and the negative electrode of the battery (1) to form a resistor voltage division circuit, and the negative input end of the operational amplifier (2) is connected to the joint of the second resistor R2 (5) and the third resistor R3 (6); one end of the first resistor R1 (4) is connected with the anode of the battery (1), and the other end is connected with the test terminal a (7) and is connected to the positive input end of the operational amplifier (2); two ends of the active buzzer (3) are respectively connected with the output end of the operational amplifier (2) and the negative electrode of the battery (1); the test terminal b (8) is directly connected with the negative electrode of the battery (1).
2. The portable substation terminal box heater fault diagnoser of claim 1, wherein: the test terminals a (7) and b (8) are connected into the electric loop through the telescopic connecting wire and adjusted according to the wiring terminal distance of the heating plate (9) to be tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921089776.XU CN210222166U (en) | 2019-07-12 | 2019-07-12 | Portable fault diagnosis device for terminal box heater of transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921089776.XU CN210222166U (en) | 2019-07-12 | 2019-07-12 | Portable fault diagnosis device for terminal box heater of transformer substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210222166U true CN210222166U (en) | 2020-03-31 |
Family
ID=69937490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921089776.XU Expired - Fee Related CN210222166U (en) | 2019-07-12 | 2019-07-12 | Portable fault diagnosis device for terminal box heater of transformer substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210222166U (en) |
-
2019
- 2019-07-12 CN CN201921089776.XU patent/CN210222166U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200331 Termination date: 20210712 |
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| CF01 | Termination of patent right due to non-payment of annual fee |