Six-node relay separating mechanism

Abstract

The utility model relates to the technical field of transformer protection assemblies, in particular to a six-node relay separation mechanism which comprises a shell, a junction box is installed at the top end of the shell, a signal rod is installed on the inner side of the shell, an oil flow baffle is installed at the bottom of the inner side of the shell and arranged below the signal rod, and a relay is installed on the signal rod. The bottom of one side of the shell is provided with a lower floating ball, one side of the shell is provided with an upper floating ball, the upper floating ball is arranged above the lower floating ball, the surface of the shell is provided with a first reed pipe and a second reed pipe, the first reed pipe is arranged on one side of the second reed pipe, the rear side of the shell is provided with a third reed pipe, and the third reed pipe is arranged on the other side of the shell. According to the technical scheme, through the design of the device, when the transformer breaks down, the functions of the heavy gas flow velocity baffle and the oil flow velocity baffle are separated, and the independent contact sends out a tripping signal so that the transformer fault can be better analyzed.

Description

Technical Field

[0001] This application relates to the field of transformer protection component technology, and in particular to a six-node relay separation mechanism. Background Technology

[0002] Gas relays are the main devices for gas protection in large power transformers. Their quality directly affects the reliable operation of the transformer. There are numerous cases of transformer outages caused by malfunctions of gas relays due to component failure. Analyzing the root causes of component failures and developing experience-based feedback measures will effectively control the frequency of gas relay malfunctions and ensure the safe operation of the transformer unit. Gas relays are crucial protective components for the safe operation of transformers. When faults occur inside the transformer, such as winding breaks, core grounding, bushing lead faults, inter-turn and inter-layer short circuits, insulation degradation, poor wire welding, poor tap changer contact, oil level drop, or oil leakage, faulty gases or oil surges are generated inside the transformer, triggering the relay to activate, alarm, or trip, thus protecting the transformer equipment.

[0003] When the transformer is running normally, the gas relay is filled with transformer oil. When the transformer body experiences a sudden fault, a rapid oil flow will be generated. The oil flow will flow from the transformer body towards the oil conservator. When the oil flow rate exceeds the set value of the gas relay baffle, the baffle will deflect, press down the float ball, and the linkage magnet will approach the reed switch. The contact will then connect the heavy gas trip circuit, shutting down the transformer.

[0004] Traditional structures share a trip contact between the baffle and the heavy gas baffle. When a transformer fault occurs, it cannot effectively distinguish whether the trip is caused by the heavy gas baffle or the oil flow baffle, failing to meet actual customer needs. A new structure is needed to separate the trip signals issued by the oil flow baffle and the heavy gas baffle. Therefore, to solve the above problems, this application provides a six-node relay separation mechanism. Utility Model Content

[0005] To address the problem of not being able to effectively distinguish between heavy gas activation and oil flow baffle activation when a transformer malfunctions, this application provides a six-node relay separation mechanism.

[0006] This application provides a six-node relay separation mechanism, including a housing, a junction box installed at the top of the housing, a signal rod installed inside the housing, an oil flow baffle installed at the bottom inside the housing, a lower float ball installed at the bottom of one side of the housing, an upper float ball installed on one side of the housing, a first reed switch and a second reed switch installed on the surface of the housing, a third reed switch installed at the rear of the housing, and a test push plate installed inside the housing.

[0007] Preferably, the oil flow baffle is located below the signal rod, and the upper float is located above the lower float.

[0008] Preferably, the first reed switch is disposed on one side of the second reed switch, and the test push plate is disposed on the bottom side inside the housing.

[0009] In summary, this application includes the following beneficial technical effects:

[0010] By designing this device, when a transformer fault occurs and the oil flow rate exceeds the set value for the gas relay baffle, the oil flow baffle deflects, approaching the first and second reed switches. The contact then activates the heavy gas trip circuit, sending a trip signal. When the oil flow baffle deflects, the lower float does not activate, preventing the third reed switch from activating and thus avoiding a heavy gas trip signal. When a large amount of transformer oil leaks, causing the oil level in the gas relay to drop, the upper float first descends, triggering a light gas alarm. As the transformer oil continues to leak until the gas relay is emptied, the lower float descends under gravity, approaching the third reed switch. The contact then activates the heavy gas trip circuit, shutting down the transformer. Compared to existing technologies, this design separates the functions of the heavy gas and oil flow rate baffles, with independent contacts sending trip signals, facilitating better analysis of transformer faults. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of the device in the embodiments of this application;

[0012] Figure 2 This is a front view of the device in the embodiments of this application;

[0013] Figure 3 This is a side view of the device in the embodiments of this application.

[0014] Explanation of reference numerals in the attached diagram: 1. Housing; 2. Junction box; 3. Signal rod; 4. Oil flow baffle; 5. Lower float; 6. Upper float; 7. First reed switch; 8. Second reed switch; 9. Third reed switch; 10. Test push plate. Detailed Implementation

[0015] The following is in conjunction with the appendix Figure 1 - Figure 3 This application will be described in further detail.

[0016] Example:

[0017] A six-node relay disconnection mechanism, as described above Figure 1 - Figure 3The system includes a housing 1, a junction box 2 installed at the top of the housing 1, a signal rod 3 installed inside the housing 1, an oil flow baffle 4 installed at the bottom inside the housing 1, the oil flow baffle 4 being located below the signal rod 3, a lower float ball 5 installed at the bottom of one side of the housing 1, an upper float ball 6 installed on one side of the housing 1, the upper float ball 6 being located above the lower float ball 5, a first reed switch 7 and a second reed switch 8 installed on the surface of the housing 1, the first reed switch 7 being located on one side of the second reed switch 8, a third reed switch 9 installed on the rear side of the housing 1, and a test push plate 10 installed inside the housing 1, the test push plate 10 being located at the bottom inside the housing 1.

[0018] When the oil flow rate exceeds the set value for the gas relay baffle, the oil flow baffle 4 deflects, approaching the first reed switch 7 and the second reed switch 8. The contact point then connects the heavy gas trip circuit, sending a trip signal. When the oil flow baffle 4 deflects, the lower float 5 does not move, preventing the third reed switch 9 from connecting, and the heavy gas trip signal is not sent. Manually pulling the signal rod 3 upwards moves the test push plate 10 upwards, causing the oil flow baffle 4 to deflect. This, in turn, moves the magnet close to the first reed switch 7 and the second reed switch 8, connecting the contact point to connect the heavy gas trip circuit, sending a trip signal. The manual reset signal rod 3 activates the flow rate baffle signal, which simulates the oil flow rate over-tolerance trip function. When a large amount of transformer oil leaks and causes the oil level in the gas relay to drop, the upper float 6 first descends to issue a light gas alarm. As the transformer oil continues to leak until the oil in the gas relay is emptied, the lower float 5 descends under gravity, approaches the third reed switch 9, and the contact is activated to connect the heavy gas trip circuit, shutting down the transformer.

[0019] This application provides a six-node relay disconnection mechanism. Its working principle is as follows: When the oil flow rate exceeds the set value for the gas relay baffle, the oil flow baffle 4 deflects, approaching the first reed switch 7 and the second reed switch 8. The contact point connects the heavy gas trip circuit, sending a trip signal. When the oil flow baffle 4 deflects, the lower float 5 does not move, preventing the third reed switch 9 from connecting, and the heavy gas trip signal is not sent. When a large amount of transformer oil leaks, causing the oil level in the gas relay to drop, the upper float 6 first descends, sending a light gas alarm. As the transformer oil continues to leak until the oil in the gas relay is emptied, the lower float 5 descends under gravity, approaching the third reed switch 9. The contact point connects the heavy gas trip circuit, stopping the transformer.

[0020] The foregoing description, with reference to preferred embodiments, illustrates an exemplary implementation of a six-node relay separation mechanism provided by this disclosure. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the spirit of this disclosure, and various combinations can be made to the various technical features and structures proposed in this disclosure without exceeding the protection scope of this disclosure, the protection scope of which is determined by the appended claims.

Claims

1. A six-node relay disconnection mechanism, comprising a housing (1), characterized in that: A junction box (2) is installed at the top of the housing (1), a signal rod (3) is installed inside the housing (1), an oil flow baffle (4) is installed at the bottom inside the housing (1), a lower float ball (5) is installed at the bottom of one side of the housing (1), an upper float ball (6) is installed on one side of the housing (1), a first reed switch (7) and a second reed switch (8) are installed on the surface of the housing (1), a third reed switch (9) is installed at the rear of the housing (1), and a test push plate (10) is installed inside the housing (1).

2. The six-node relay separation mechanism according to claim 1, characterized in that: The oil flow baffle (4) is located below the signal rod (3), and the upper float (6) is located above the lower float (5).

3. The six-node relay separation mechanism according to claim 1, characterized in that: The first reed switch (7) is located on one side of the second reed switch (8), and the test push plate (10) is located on the bottom side inside the housing (1).

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