Relay fault rapid judgment device

Abstract

The invention relates to the technical field of electric power operation and maintenance, and particularly discloses a relay fault rapid judgment device, which comprises a control circuit module, a fault detection module, a fault detection module and a fault detection module, the output meter pen is electrically connected to the output end of the control circuit module and is used for applying the test voltage output by the control circuit module to a contact of the relay; and the liquid crystal touch screen is electrically connected to the control circuit module and is used for displaying the numerical value of the test voltage in real time and providing an operation interface for adjusting the test voltage for a user. The relay fault rapid judgment device provided by the invention can carry out power supply excitation on the relay so as to rapidly judge whether the relay has a fault or not, reduce the defect elimination time of relay protection field work, improve the working efficiency, reduce the short-circuit work on a secondary loop and reduce the working risk.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power operation and maintenance, and in particular to a device for quickly judging relay faults. Background Art

[0002] A large number of relays are needed in the secondary circuit to complete functions such as circuit breaker control, knife switch and ground knife control, alarm signal, wave recording, circuit interlocking, etc. Among them, the correct startup of the relay and the correct closing or opening of its contacts are the basic guarantees for the secondary circuit to correctly complete its functions. Often when the operation time reaches a certain number of years or the operating environment is poor, defects will appear in the secondary circuit, and the relay protection automation personnel are required to check in time, locate the defects, quickly eliminate the defects, and restore the normal operation of the secondary circuit. However, the secondary circuit is complicated, and each relay contact, wire, and relay in the circuit may be a fault point. Under normal circumstances, when the relay protection automation personnel check the defects, it is difficult to distinguish whether the fault point exists in the relay or the rest of the circuit. Such as:

[0003] 1. Defects were found in the control circuits of the knife switch and the ground switch during the power outage process. To ensure the construction period, the operation personnel manually completed the power outage operation. When the relay protection automation personnel arrived to check the defects, the circuit status was no longer in the defective state. In addition, due to the change in the operation mode of the primary equipment, the interlocking circuit was disconnected, and it was impossible to quickly check whether the relay could start normally;

[0004] 2. The alarm signal is frequently activated and reset, making it difficult for the relay protection personnel to capture the defect moment and determine the defect location during inspection.

[0005] In both cases, the relay needs to be powered and excited to check whether the relay and the contacts can operate correctly. Currently, there is no device specifically used for powering and exciting the relay, so the power worker can only short-circuit the secondary circuit manually to excite the relay.

[0006] The secondary circuit is complex and tightly arranged, and there is a great risk in short-circuiting the circuit. Short-circuiting errors can easily cause circuit short-circuits, resulting in power circuit breakers tripping, switches or knife switches and other primary equipment malfunctions, and other accidents, posing risks to the safety of operating equipment and the personal safety of personnel.

[0007] The above information disclosed in this Background section is included only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not form the prior art that is currently known to a person of ordinary skill in the art. Summary of the invention

[0008] One object of the present invention is to provide a relay fault rapid judgment device, which can supply power and excite the relay so as to quickly judge whether the relay is faulty, reduce the time of relay protection on-site fault elimination, improve work efficiency, and at the same time reduce the work of short-circuiting on the secondary circuit and reduce work risks.

[0009] To achieve the above objectives, the present invention provides a relay fault rapid judgment device, comprising:

[0010] A control circuit module for outputting an adjustable test voltage for relay testing;

[0011] An output test lead, electrically connected to the output end of the control circuit module, and used for applying the test voltage output by the control circuit module to the contacts of the relay;

[0012] The liquid crystal touch screen is electrically connected to the control circuit module, and is used to display the value of the test voltage in real time and provide the user with an operation interface for adjusting the test voltage.

[0013] Optionally, also include:

[0014] The control circuit module is installed inside the shell, the output probe is located outside the shell 1, and the liquid crystal touch screen is installed on the surface of the shell.

[0015] Optionally, the shell is an insulating structure.

[0016] Optionally, also include:

[0017] A magnet is fixed on the shell.

[0018] Optionally, the output probe includes an output cable having one end electrically connected to the control circuit module, and a metal needle fixed to the other end of the output cable.

[0019] Optionally, the output probe further includes a metal clip detachably connected to the metal needle.

[0020] Optionally, the metal clip includes two metal clips that are arranged to rotate relative to each other, and one of the metal clips is provided with a pin hole for inserting the metal needle.

[0021] Optionally, the control circuit module includes a built-in power supply and a transformer module electrically connecting the built-in power supply and the output probe.

[0022] Optionally, the supply voltage of the built-in power supply is 12V-48V.

[0023] Optionally, the output voltage of the transformer module is 80V~220V.

[0024] The beneficial effects of the present invention are: providing a relay fault rapid judgment device, when it is necessary to perform fault detection on the relay, the operation and maintenance personnel electrically connect the output test lead to the contact of the relay to be tested, and then adjust the output voltage of the control circuit module to the required test voltage through the liquid crystal touch screen, so that the relay can be powered and excited without continuously connecting the secondary circuit, thereby completing the inspection operation of the relay.

[0025] Therefore, the relay fault rapid judgment device provided by the present invention can supply power and excite the relay to quickly judge whether the relay is faulty, reduce the time for on-site fault elimination of relay protection, improve work efficiency, and at the same time reduce the work of short-circuiting on the secondary circuit and reduce work risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 A schematic diagram of the structure of a relay fault rapid judgment device provided in an embodiment.

[0028] In the figure:

[0029] 1. Shell; 101. Power charging port;

[0030] 2. Output test lead; 201. Output cable; 202. Metal needle; 203. Metal clip;

[0031] 3. LCD touch screen. DETAILED DESCRIPTION

[0032] The reference to "embodiment" in the present invention means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The word "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present invention, as long as there is no technical contradiction or conflict, the various technical features mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

[0033] Unless otherwise defined, the technical terms used herein have the same meanings as those generally understood by those skilled in the art to which the present invention belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit the present invention.

[0034] In the description of the present invention, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in a logical relationship of "or".

[0035] In the present invention, terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0036] Without further restrictions, in the present invention, the words "include", "comprises", "has" or other similar expressions used in sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0037] Similar to the understanding in the Examination Guidelines, in the present invention, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of the present invention, the meaning of "multiple" is more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0038] In the description of the embodiments of the present invention, the space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present invention or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0039] Unless otherwise expressly specified or limited, in the description of the embodiments of the present invention, the terms such as "install", "connect", "connect", "fix", "set" and the like used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art of the technical field to which the present invention belongs, the specific meanings of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0040] See also Figure 1 The present invention provides a relay fault rapid judgment device, including a control circuit module, an output test lead 2, and a liquid crystal touch screen 3.

[0041] The control circuit module is used to output an adjustable test voltage for relay testing; the output test lead 2 is electrically connected to the output end of the control circuit module, and is used to apply the test voltage output by the control circuit module to the contacts of the relay; the liquid crystal touch screen 3 is electrically connected to the control circuit module, and is used to display the value of the test voltage in real time, and provide the user with an operating interface for adjusting the test voltage.

[0042] The relay fault rapid judgment device provided in this embodiment is used for quickly judging the relay fault. When it is necessary to perform fault detection on the relay, the operation and maintenance personnel electrically connect the output test lead 2 to the contact of the relay to be tested, and then adjust the output voltage of the control circuit module to the required test voltage through the LCD touch screen 3. The relay can be powered and excited without continuously connecting the secondary circuit, thereby completing the inspection operation of the relay.

[0043] Therefore, the relay fault rapid judgment device provided by the present invention can supply power and excite the relay to quickly judge whether the relay is faulty, reduce the time for on-site fault elimination of relay protection, improve work efficiency, and at the same time reduce the work of short-circuiting on the secondary circuit and reduce work risks.

[0044] The relay fault quick judgment device also includes a housing 1 , the control circuit module is installed inside the housing 1 , the output probe 2 is located outside the housing 1 , and the liquid crystal touch screen 3 is installed on the surface of the housing 1 .

[0045] The setting of the outer shell 1 not only protects the internal electronic components, but also makes the entire device compact, easy to carry and use, and also improves the overall aesthetics and durability of the device.

[0046] Optionally, the housing 1 is an insulating structure. The design of the insulating housing 1 ensures the safety of operators during use, avoids the risk of direct contact with live parts, and thus significantly improves the safety performance of the device.

[0047] The relay fault quick judgment device also includes a magnet, which is fixed on the housing 1. The addition of the magnet enables the device to be fixed on the iron equipment by magnetic attraction. This design frees the operator's hands, reduces fatigue of holding the device for a long time, and improves work efficiency.

[0048] In this embodiment, the output probe 2 includes an output cable 201 electrically connected to the control circuit module at one end, and a metal needle 202 fixed to the other end of the output cable 201. The design of the output probe 2, including the output cable 201 electrically connected to the control circuit module and the metal needle 202 fixed to the end of the cable, provides a stable voltage transmission path, ensures the accuracy of the test, and simplifies the connection process with the relay contacts.

[0049] Optionally, the output probe 2 further includes a metal clip 203 detachably connected to the metal needle 202. Specifically, the metal clip 203 includes two metal clips 203 that are relatively rotatably arranged, and one of the metal clips 203 is provided with a pin hole for the metal needle 202 to be inserted.

[0050] The detachable connection of the metal clip 203 provides more connection options for the output probe 2, adapts to relay contacts of different shapes and sizes, and enhances the adaptability and convenience of the device.

[0051] In this embodiment, the control circuit module includes a built-in power supply, a power charging port 101 for charging the built-in power supply, and a transformer module electrically connecting the built-in power supply and the output probe 2. Optionally, the power supply voltage of the built-in power supply is 12V-48V, and the output voltage of the transformer module is 80V~220V.

[0052] The design of the built-in power supply and transformer module in the control circuit module enables the device to work independently without being restricted by the external power supply, which enhances the flexibility and field applicability of the device. The 12V-48V supply voltage range of the built-in power supply is compatible with a variety of standard batteries or power adapters, providing flexible power supply options and enhancing the environmental adaptability of the device. The 80V~220V output voltage range of the transformer module meets the testing requirements of various relays, allowing the device to be widely used in different types of relay fault judgment, improving the versatility and practicality of the device.

[0053] The relay fault rapid judgment device provided in this embodiment has the following advantages:

[0054] ① Convenience of operation: The device provides an intuitive operation interface through the LCD touch screen 3, allowing operation and maintenance personnel to easily adjust the test voltage and quickly complete the excitation and inspection of the relay without complicated operation procedures, greatly simplifying the fault detection process.

[0055] ② Improved safety: The design of the insulating housing 1 ensures the safety of the operator, avoids the risk of direct contact with live parts, and reduces the possibility of electric shock accidents.

[0056] ③ Compact structure and easy to carry: The setting of the outer shell 1 not only protects the internal components, but also makes the overall structure of the device compact, which is easy to carry to different work sites and improves the flexibility of on-site operations.

[0057] ④ Improve work efficiency: The addition of magnets allows the device to be magnetically fixed to iron equipment, freeing the operator's hands, reducing fatigue and improving work efficiency.

[0058] ⑤ Strong adaptability: The detachable metal clip 203 of the output probe 2 is designed to adapt to relay contacts of different shapes and sizes, so that the device can be applied to various types of relays.

[0059] ⑥ Independent working ability: The design of built-in power supply and transformer module enables the device to work independently of the external power supply and is not restricted by the on-site power supply conditions, which enhances the environmental adaptability and on-site applicability of the device.

[0060] ⑦ Wide range of applications: The output voltage range of the transformer module is wide, which can meet the testing requirements of different relays, making the device widely used in the rapid judgment of various relay faults.

[0061] To sum up, the relay fault rapid judgment device provided by the present invention not only improves the efficiency and safety of relay fault detection, but also provides an efficient, convenient and safe detection tool for operation and maintenance personnel through its compact design and strong adaptability, thereby significantly reducing the fault elimination time in relay protection on-site work and improving overall work efficiency.

[0062] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A relay fault rapid judgment device, characterized in that: include: A control circuit module for outputting an adjustable test voltage for relay testing; An output test lead (2), electrically connected to the output end of the control circuit module, and used for applying the test voltage output by the control circuit module to the contact of the relay; A liquid crystal touch screen (3) is electrically connected to the control circuit module and is used to display the value of the test voltage in real time and provide the user with an operation interface for adjusting the test voltage.

2. The relay fault rapid judgment device according to claim 1, characterized in that: Also includes: A housing (1), the control circuit module is installed inside the housing (1), the output probe (2) is located outside the housing (1), and the liquid crystal touch screen (3) is installed on the surface of the housing (1).

3. The relay fault rapid judgment device according to claim 2, characterized in that: The housing (1) is an insulating structure.

4. The relay fault rapid judgment device according to claim 2, characterized in that: Also includes: A magnet is fixed on the housing (1).

5. The relay fault rapid judgment device according to claim 1, characterized in that: The output probe (2) comprises an output cable (201) having one end electrically connected to the control circuit module, and a metal needle (202) fixedly connected to the other end of the output cable (201).

6. The relay fault rapid judgment device according to claim 5, characterized in that: The output test lead (2) also includes a metal clip (203) detachably connected to the metal needle (202).

7. The relay fault rapid judgment device according to claim 6, characterized in that: The metal clip (203) comprises two metal clips (203) arranged to rotate relative to each other, wherein one of the metal clips (203) is provided with a pin insertion hole for the metal needle (202) to be inserted.

8. The relay fault rapid judgment device according to claim 1, characterized in that: The control circuit module comprises a built-in power supply and a voltage transformation module electrically connecting the built-in power supply and the output probe (2).

9. The relay fault rapid judgment device according to claim 8, characterized in that: The supply voltage of the built-in power supply is 12V-48V.

10. The relay fault rapid judgment device according to claim 9, characterized in that: The output voltage of the transformer module is 80V~220V.

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