A multi-stage light gas relay

Abstract

The present application discloses a multi-stage light gas relay, including: a relay air chamber and a plurality of light gas components; each light gas component is correspondingly provided with a plurality of light gas contacts and a plurality of light gas limiting brackets; a plurality of light gas components are built into the relay air chamber and arranged in a longitudinal manner; a plurality of light gas contacts are respectively arranged at different heights of the cavity of the relay air chamber, and when the gas volume of the relay air chamber increases and the oil level drops, the light gas float of the light gas component drops accordingly and connects the light gas contacts at the corresponding heights respectively. The present application solves the technical problem in the prior art that the operation and maintenance personnel often cannot detect the internal development fault defects of the main transformer, and the development of the internal fault of the main transformer body has no obvious external characteristic quantity response, so it is difficult to find the problem in time by making the light gas contacts act differently at different degrees of gas release.

Description

Technical Field

[0001] The present application relates to the technical field of gas relays, and in particular to a multi-stage light gas relay. Background Art

[0002] The existing gas relay uses the internal fault of the transformer to decompose the oil or insulating materials to produce gas or cause the oil flow to surge, so that the gas relay contacts are activated, an alarm signal (light gas) or the transformer is automatically cut off (heavy gas). Light gas mainly reflects that during operation or minor faults (such as overload heating, local heating of the iron core, heating of the oil tank caused by magnetic leakage, etc.), the gas decomposed from the oil or insulating materials rises into the gas collecting chamber of the gas relay, and the air pressure causes the oil level to slowly drop. The relay float or open cup falls with the oil level, causing the light gas reed contact to connect and send a signal. Further drop in the oil level or increase in oil and gas flow will cause heavy gas to operate. Heavy gas mainly reflects that when serious faults such as bushing grounding and inter-turn short circuit occur inside the transformer, a large amount of gas is quickly generated, pushing the oil flow to impact the baffle, and the magnet on the baffle attracts the heavy gas reed contact to turn on and trip.

[0003] The experience of on-site operation is that when the light gas action sends an alarm signal, staff will be arranged to go to the site to confirm the actual situation of the main transformer (including abnormal appearance, gas leakage, abnormal sound, whether the gas in the light gas chamber is flammable, etc.), and then report to professional technicians based on the actual situation on site to confirm whether the power should be cut off for relevant inspections (including gas analysis, main transformer related tests, gas relay inspection, related circuit inspection, etc.), and then determine whether it is an internal fault of the main transformer. The existing gas relay generally sends an alarm signal through a single light gas action to remind the operation and maintenance personnel to conduct on-site inspections to see if there are any abnormalities in the various parts of the transformer, and at the same time check the gas composition that causes the light gas action. In this process, the arrival time of personnel is uncertain. After arriving, due to the limitations of the existing technical level, the operation and maintenance personnel often cannot find the internal development fault defects of the main transformer. The development of the internal fault of the main transformer body has no obvious external characteristic quantity response, so it is difficult to find the problem in time. Summary of the invention

[0004] The present application provides a multi-stage light gas relay, which solves the technical problem in the prior art that operation and maintenance personnel are often unable to detect the internal development fault defects of the main transformer, and the development of the internal fault of the main transformer body has no obvious external characteristic quantity response, so it is difficult to detect the problem in time.

[0005] The present application provides a multi-stage light gas relay, comprising:

[0006] relay gas chamber and multiple light gas assemblies;

[0007] Each of the light gas components is correspondingly provided with a plurality of light gas contacts and a plurality of light gas limiting brackets;

[0008] The plurality of light gas components are all built into the relay air chamber and arranged longitudinally;

[0009] The plurality of light gas contacts are respectively arranged at different heights of the chamber of the relay gas chamber. When the gas volume of the relay gas chamber increases and the oil level drops, the light gas float of the light gas assembly drops accordingly and connects the light gas contacts at corresponding heights respectively.

[0010] The multiple light gas limiting brackets are respectively used to limit the corresponding light gas buoys from continuing to descend after passing through the corresponding light gas connection points.

[0011] Optionally, the number of the light gas contacts is 9, and three light gas contacts are correspondingly arranged for each light gas component.

[0012] Optionally, the number of the light gas limiting brackets is 6, and two light gas limiting brackets are correspondingly arranged for each light gas assembly.

[0013] Optionally, a permanent magnet is provided at the end of the light gas component for connecting the light gas contact.

[0014] Optionally, it also includes a light gas contact fixing component, which is fixed to the side wall of the relay air chamber and is used to fix the light gas contact.

[0015] Optionally, a fixed shaft is also included, and the multiple light gas assemblies are arranged in sequence at different positions of the fixed shaft.

[0016] Optionally, the light gas assembly includes a light gas buoy, and the light gas buoy is movably connected to a fixed shaft.

[0017] Optionally, the light gas buoy is a vacuum structure or a lightweight material.

[0018] Optionally, the light gas assembly includes a buoy connecting rod, and the midpoint of the buoy connecting rod is vertically connected to the fixed shaft.

[0019] Optionally, the buoy connecting rod is fixed with an auxiliary buoy, and each light gas assembly is equipped with 2 or 4 auxiliary buoys with adjustable heights, and the light gas action value can be adjusted by adjusting the height of the auxiliary buoys.

[0020] In order to solve the defects in the prior art, the present application provides a multi-stage light gas relay, comprising:

[0021] relay gas chamber and multiple light gas assemblies;

[0022] Each of the light gas components is correspondingly provided with a plurality of light gas contacts and a plurality of light gas limiting brackets;

[0023] The plurality of light gas components are all built into the relay air chamber and arranged longitudinally;

[0024] The plurality of light gas contacts are respectively arranged at different heights of the chamber of the relay gas chamber. When the gas volume of the relay gas chamber increases and the oil level drops, the light gas float of the light gas assembly drops accordingly and connects the light gas contacts at corresponding heights respectively.

[0025] The multiple light gas limiting brackets are respectively used to limit the corresponding light gas buoys from continuing to descend after passing through the corresponding light gas connection points.

[0026] The present application provides a multi-stage light gas relay, which is provided with a plurality of light gas components arranged in sequence in a longitudinal direction in the relay gas chamber. The structures of the plurality of light gas components are the same, and each light gas component is provided with a plurality of light gas contacts and a plurality of light gas limiting brackets. The light gas contacts are distributed at different heights in the relay gas chamber. When the oil level inside the relay gas chamber decreases due to the increase in the amount of gas, the first light gas component sequentially connects all the light gas contacts corresponding to it as the oil level decreases. If the oil level continues to decrease, the second light gas component also decreases, and sequentially connects all the light gas contacts. And so on, until all the light gas contacts are connected. The degree of fault of the main transformer can be judged by the connection time and the number of connections of the light gas contacts. The present application solves the technical problem in the prior art that the operation and maintenance personnel often cannot find the internal development fault defects of the main transformer, and the development of the internal fault of the main transformer body has no obvious external characteristic quantity reaction, so it is difficult to find the problem in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of a multi-stage light gas relay provided in this application;

[0028] Figure 2 A top view of a multi-stage light gas relay provided in the present application;

[0029] Figure 3 A top view of a light gas component of a multi-stage light gas relay provided in the present application;

[0030] Figure 4 A front view of a light gas component of a multi-stage light gas relay provided in the present application;

[0031] Figure 5 A schematic structural diagram of a left light gas contact fixing assembly of a multi-stage light gas relay provided in the present application;

[0032] Figure 6A schematic structural diagram of a right light gas contact fixing assembly of a multi-stage light gas relay provided in the present application;

[0033] Figure 7 A schematic diagram of a multi-stage light gas relay provided in the present application in a normal state;

[0034] Figure 8 A schematic diagram of a multi-stage light gas relay provided in the present application when the first light gas is actuated;

[0035] Fig. 9 A schematic diagram of a multi-stage light gas relay provided in the present application when the second light gas is actuated;

[0036] Fig.10 A schematic diagram of a multi-stage light gas relay provided in the present application when the third light gas is actuated;

[0037] Fig.11 A schematic diagram of a multi-stage light gas relay provided in the present application when the fourth light gas is actuated;

[0038] Fig.12 A schematic diagram of a multi-stage light gas relay provided in the present application when the fifth light gas is actuated;

[0039] Fig.13 A schematic diagram of a multi-stage light gas relay provided in the present application when the sixth light gas is actuated;

[0040] Fig.14 A schematic diagram of a multi-stage light gas relay provided in the present application when the seventh light gas is actuated;

[0041] Fig.15 A schematic diagram of a multi-stage light gas relay provided in the present application when the eighth light gas is actuated;

[0042] Fig.16 A schematic diagram of a multi-stage light gas relay provided in the present application when the ninth light gas is actuated;

[0043] Figure numerals: relay body 1; relay air chamber 2; pipeline 3; fixed shaft 4; left light gas contact fixing assembly 5; first light gas contact 51; second light gas contact 52; first light gas contact fixing groove 53; second light gas contact fixing groove 54; right light gas contact fixing assembly 6; third light gas contact 61; third light gas contact fixing groove 62; first light gas assembly 7; position adjustment screw 71; light gas buoy 72; bearing connector 73; buoy connecting rod 74; bar permanent magnet 75; auxiliary buoy 76; auxiliary buoy connecting rod 77; left light gas limiting bracket 8 right light gas limiting bracket 9; transverse fixed shaft 10. DETAILED DESCRIPTION

[0044] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] The existing gas relay generally sends out an alarm signal through a single light gas action to remind the operation and maintenance personnel to check whether the transformer is abnormal and check the gas composition that triggers the light gas action. However, since the time for the operation and maintenance personnel to arrive at the alarm site is uncertain during the whole process, and after arriving, due to the limitations of the existing technology, and the fact that the fault caused by the defects inside the main transformer body has no obvious external characteristic quantity, it is difficult for the operation and maintenance personnel to detect the defects inside the main transformer body.

[0046] After a single light gas action occurs in the existing gas relay, even if the gas inside the subsequent relay increases, the light gas relay cannot act again to indicate the change in gas volume. That is to say, when there is a developing fault inside the main transformer, if the existing gas relay does not perform the deflation and reset operation when the light gas action occurs, it will not act again even if there is continuous gas release. Therefore, the present application is set to act at the early stage of the development of the fault and trip the circuit breakers on both sides of the transformer, so that when the transformer continuously releases gas in a short period of time, the gas relay can make different responses in stages according to the different amounts of gas released.

[0047] During the operation of the existing main transformer, due to oil pipeline problems, structural problems or other conditions that cause slow gas release or increased gas release, the main transformer light gas relay is activated, and an alarm signal is mistakenly sent. However, in this case, the interval between the first light gas action and the second light gas action of the light gas relay caused by the slowly increasing gas is long. Therefore, in the present application, the phenomenon of false alarm signal can be prevented by adjusting the time interval between the first light gas action and the second light gas action of the light gas relay.

[0048] During a certain period of time after the main transformer is debugged, overhauled, or put into operation after oil filtration, there may be trapped gas gradually released from the transformer. When the amount of these trapped gases released reaches the threshold of light gas action and triggers the corresponding light gas action, this situation is different from the time length of the light gas action caused by the decomposition gas generated by the fault during the debugging, overhaul, or oil filtration of the main transformer. However, the logic of the light gas action set in the prior art does not take into account the time length of the light gas action during the debugging, overhaul, or oil filtration of the main transformer, which makes it difficult to distinguish whether the light gas action is triggered by the trapped gas or the fault decomposition gas. Therefore, both the trapped gas and the fault decomposition gas will trigger an alarm. The present application has also made corresponding adjustments to this phenomenon.

[0049] The present application provides a multi-stage light gas relay, which solves the technical problem in the prior art that operation and maintenance personnel are often unable to detect the internal development fault defects of the main transformer, and the development of the internal fault of the main transformer body has no obvious external characteristic quantity response, so it is difficult to detect the problem in time.

[0050] For easier understanding, see Figure 1-16 .

[0051] The present application provides a multi-stage light gas relay, comprising:

[0052] Relay gas chamber 2 and multiple light gas components;

[0053] Each light gas component is correspondingly provided with a plurality of light gas contact points and a plurality of light gas limiting brackets;

[0054] A plurality of light gas components are built into the relay gas chamber 2 and are arranged longitudinally;

[0055] A plurality of light gas contacts are respectively arranged at different heights of the chamber of the relay gas chamber 2. When the gas volume of the relay gas chamber 2 increases and the oil level drops, the light gas float 72 of the light gas assembly drops accordingly and connects the light gas contacts at corresponding heights respectively.

[0056] A plurality of light gas limiting brackets are respectively used to limit the corresponding light gas float 72 from continuing to descend after passing through the corresponding light gas connection point.

[0057] It should be noted that if Figure 1As shown, the relay body 1 of the present application has multiple light gas components built in, illustratively, three. The three light gas components are sequentially arranged longitudinally in the relay air chamber 2 and fixed. The structure of each light gas component is the same, and the corresponding light gas contacts, the number of light gas contacts, the corresponding light gas limiting brackets, and the number of light gas limiting brackets are all the same. When the oil level of the transformer gradually decreases with the increase of the amount of gas released, the first light gas component 7 floating on the relay gas chamber 2 decreases accordingly, and when the descending height meets the first light gas action value, the first light gas contact 51 is connected, and the first light gas action is triggered; when the oil level continues to descend, when the descending height meets the second light gas action value, the second light gas contact 52 is connected, and the second light gas action is triggered, and the first light gas action continues at this time; when the oil level continues to descend, when the descending height meets the third light gas action value, the third light gas contact 61 is connected, and the third light gas action is triggered, and the second light gas action continues at this time, and the first light gas action is disconnected; and, at this time, the light gas limiting brackets on both sides of the first light gas component 7 respectively limit the continued descent of the first light gas component 7, so that its first light gas action and the second light gas action continue. If the gas volume continues to increase, the descending process of the second light gas component is the same as the action flow of the first light gas component 7, until it descends to its fifth light gas action and the sixth light gas action continues. If the gas volume still increases, the descending process of the third light gas component is the same as the action flow of the first light gas component 7, until it descends to its eighth light gas action and the ninth light gas action continues. A pipe 3 is provided at the bottom of the relay gas chamber 2, and the pipe 3 is provided with two pipe connection ends for connecting the upper part of the transformer with the pipe 3 of the oil pillow. And the two ports of the pipe 3 are both circular, and the inner and outer diameters are matched with the transformer.

[0058] Furthermore, the number of light gas contacts is 9, and each light gas component is provided with three light gas contacts.

[0059] It should be noted that each light gas component is provided with three light gas contacts, and two light gas contacts are arranged on one side of the relay gas chamber 2, and the other light gas contact is arranged on the other side of the relay gas chamber 2. The three light gas contacts are respectively arranged on both sides of the corresponding light gas components.

[0060] Furthermore, the number of light gas limiting brackets is 6, and two light gas limiting brackets are correspondingly arranged for each light gas assembly.

[0061] It should be noted that, on both sides of each light gas assembly, a left light gas limiting bracket 8 and a right light gas limiting bracket 9 are respectively provided. Moreover, the height of the light gas limiting bracket of the first light gas assembly 7 is lower than the light gas connection point with the lowest height of the first light gas assembly 7, and higher than the light gas connection point with the highest height of the second light gas assembly. Similarly, the height of the light gas limiting bracket of the second light gas assembly is lower than the light gas connection point with the lowest height of the first light gas assembly 7, and higher than the light gas connection point with the highest height of the third light gas assembly.

[0062] Furthermore, a permanent magnet is provided at the end of the light gas component for connecting the light gas contact.

[0063] It should be noted that, for example, Figure 3 As shown, bar permanent magnets 75 are fixed at both ends of the light gas group, and when the two bar permanent magnets 75 are close to the light gas contact, they will be adsorbed on the light gas contact under the action of magnetic force and connect the light gas contact. Similarly, bar permanent magnets 75 are set at both ends of the second light gas component and the third light gas component, which will not be described in detail here.

[0064] Furthermore, it also includes a light gas contact fixing component, which is fixed to the side wall of the relay air chamber 2 and is used to fix the light gas contact.

[0065] It should be noted that if Figure 5 and Figure 6 As shown, each light gas component is provided with a corresponding contact fixing component, which can be made of insulating material. Taking the first light gas component 7 as an example, the corresponding light gas contact fixing components are respectively provided on both sides of the first light gas component 7 and are respectively fixed on the side walls of the relay chamber 2. Figure 5 As shown, two light gas contacts may be fixed on the left light gas contact fixing assembly 5 fixed on the left side of the light gas assembly, and one light gas contact may be fixed on the right light gas contact fixing assembly 6 on the right side, which are respectively the first light gas contact 51, the second light gas contact 52 and the third light gas contact 61 in order from top to bottom, and the height difference between the three light gas contacts may be the same. In particular, if two light gas contacts are fixed on the right light gas contact fixing assembly 6 of the first light gas assembly 7, it is also possible, as long as the three light gas contacts corresponding to the first light gas assembly 7 are respectively located at different heights. The light gas contacts corresponding to the second light gas assembly and the third light gas assembly and the left light gas contact fixing assembly 5 and the right light gas contact fixing assembly 6 have the same design concept as that of the first light gas assembly 7, which will not be repeated here.

[0066] And, if Figure 5The left light gas contact fixing component 5 shown is provided with two light gas contacts, namely a first light gas contact 51 and a second light gas contact 52, both of which are arranged with dry yellow contacts inside, and are fixed to the light gas fixing component respectively through light gas contact fixing grooves correspondingly arranged on the light gas contact fixing component, the first light gas contact 51 is correspondingly provided with a first light gas contact fixing groove 53, the second light gas contact 52 is correspondingly provided with a second light gas contact fixing groove 54, wherein the light gas contacts can be inserted into the corresponding light gas contact fixing grooves by snapping.

[0067] like Figure 6 The light gas contact fixing assembly shown is provided with a light gas contact, which is the third light gas contact 61, the interior of which is provided as a dry yellow contact and is fixed to the light gas fixing assembly through a corresponding third light gas contact 62 fixing groove provided on the light gas fixing assembly.

[0068] As attached Figure 1-6 As shown, the multi-stage light gas relay of the present application is provided with light gas protection levels:

[0069] By cooperating with the first light gas component 7 and the light gas contact fixing component on the left side, two levels of light gas protection can be achieved, including: light gas 1 protection and light gas 2 protection;

[0070] By cooperating with the first light gas component 7 and the light gas contact fixing component on the right side, level 1 light gas protection can be achieved, including: light gas 3 protection;

[0071] By cooperating with the second light gas component and the light gas contact fixing component on the left, two levels of light gas protection can be achieved, including: light gas 4 protection and light gas 5 protection;

[0072] By cooperating with the second light gas component and the light gas contact fixing component on the right, level 1 light gas protection can be achieved, including: light gas 6 protection;

[0073] By cooperating with the third light gas component and the light gas contact fixing component on the left, two levels of light gas protection can be achieved, including: light gas 7 protection and light gas 8 protection;

[0074] By cooperating the first light gas component 7 and the light gas contact fixing component on the right side, level 1 light gas protection can be achieved, including: light gas 9 protection.

[0075] Corresponding to the 9-level light gas protection, there is a light gas action extreme value, from bottom to top: Level 1: The action value of light gas 1 protection corresponds to 100 ml;

[0076] Level 2: The action value of light gas 2 protection corresponds to 150 ml; the difference with light gas 1 protection is 50 ml;

[0077] Level 3: The action value of light gas 3 protection corresponds to 200 ml; the difference with light gas 2 protection is 50 ml;

[0078] By adjusting the heights of the two auxiliary buoys on the first light gas assembly 7, the above three levels of light gas protection action values ​​can be adjusted synchronously, but the level differences between them remain unchanged.

[0079] Level 4: The action value of light gas 4 protection corresponds to 300 ml; the difference with light gas 3 protection is 100 ml;

[0080] Level 5: The action value of light gas 5 protection corresponds to 350 ml; the level difference with light gas 4 protection is 50 ml;

[0081] Level 6: The action value of light gas 6 protection corresponds to 400 ml; the difference with light gas 5 protection is 50 ml;

[0082] By adjusting the heights of the two auxiliary buoys on the second light gas assembly, the above three levels of light gas protection action values ​​can be adjusted synchronously, but the level differences between them remain unchanged.

[0083] Level 7: The action value of light gas 7 protection corresponds to 500 ml; the difference with light gas 6 protection is 100 ml;

[0084] Level 8: The action value of light gas 8 protection corresponds to 550 ml; the level difference with light gas 7 protection is 50 ml;

[0085] Level 9: The action value of light gas 9 protection corresponds to 600 ml; the difference with light gas 8 protection is 50 ml;

[0086] By adjusting the heights of the two auxiliary buoys on the third light gas assembly, the above three levels of light gas protection action values ​​can be adjusted synchronously, but the level differences between them remain unchanged.

[0087] Furthermore, it also includes a fixed shaft, and a plurality of light gas components are arranged in sequence at different positions of the fixed shaft.

[0088] It should be noted that a transverse fixed shaft 10 is provided inside the relay air chamber 2, and the two end points of the transverse fixed shaft 10 are respectively fixed on the two side surfaces of the relay air chamber 2, and the transverse fixed shaft 10 can be inserted into or removed from the relay air chamber 2 through its two end points.

[0089] A fixed shaft is also provided in the relay air chamber 2, one end of which is fixedly connected to the transverse fixed shaft 10 and is perpendicular to the transverse fixed shaft 10, and the other end is sequentially connected to the first light gas assembly 7, the second light gas assembly and the third light gas assembly.

[0090] Three bearing connectors 73 are arranged at the same distance on the fixed shaft, and are movably connected to the first light gas component 7, the second light gas component and the third light gas component through the bearing connectors 73. These light gas components can move up and down a certain distance along the corresponding bearings.

[0091] Furthermore, the light gas assembly includes a light gas float 72, and the light gas float 72 is movably connected to the fixed shaft.

[0092] It should be noted that each light gas assembly is provided with a light gas float 72 , and these light gas floats 72 float on the relay gas chamber 2 .

[0093] Furthermore, the light gas buoy 72 is a vacuum structure or a light material.

[0094] It should be noted that each light gas assembly is provided with a light gas float 72. In order to achieve the floating of the light gas float 72 in the transformer insulating oil, it can be set as a vacuum structure so that its overall specific gravity is less than the specific gravity of the transformer insulating oil. It can also be made of a lightweight material, and the material set can make the overall specific gravity of the light gas float 72 less than the specific gravity of the transformer insulating oil.

[0095] Further, the light gas assembly includes a buoy connecting rod 74, the midpoint of which is vertically connected to the fixed shaft.

[0096] It should be noted that each light gas assembly is provided with a buoy connecting rod 74, which is symmetrically arranged at both ends of the corresponding light gas buoy 72, and an auxiliary buoy 76 is arranged in the middle. The inner diameters of the two auxiliary buoys 76 are matched with the outer diameters of the buoy connecting rod 74, and the material thereof is the same as that of the light gas buoy 72, and is a cylindrical structure. By adjusting the height difference between the auxiliary buoy 76 and the light gas buoy 72 and the ground, the light gas action value can be adjusted. Among them, the buoy connecting rod 74 is used in conjunction with the position adjustment screw 71 to adjust the relative position of the auxiliary buoy 76 to the buoy connecting rod 74.

[0097] Furthermore, the buoy connecting rod 74 is fixed with an auxiliary buoy 76, and each light gas assembly is equipped with 2 or 4 auxiliary buoys 76 with adjustable heights. The light gas action value can be adjusted by adjusting the height of the auxiliary buoy 76.

[0098] It should be noted that the auxiliary float connecting rod 77 is a cylindrical structure with a thread on the outer ring, which can be used in conjunction with the position adjustment screw 71.

[0099] For ease of understanding, one of the workflows of this application is described below:

[0100] like Figure 7As shown, when the transformer is operating normally, the relay air chamber 2 is filled with transformer insulating oil, so that the light gas float 72 of the first light gas assembly 7 floats on the surface of the relay air chamber 2. At this time, the bar permanent magnet 75 of the light gas assembly is away from all light gas contacts, so the first light gas contact 51, the second light gas contact 52 and the third light gas contact 61 are all in a disconnected state.

[0101] like Figure 8 As shown, when the amount of gas released inside the transformer reaches the first preset amount of gas, the insulating oil level in the relay gas chamber 2 begins to drop, and the light gas float 72 of the first light gas component 7 floating on the surface also drops accordingly, and the bar permanent magnet 75 of the first light gas component 7 drops to the first light gas contact 51, and is adsorbed on the first light gas contact 51 to connect the first light gas contact 51, and the first light gas action occurs at this time. At this time, the bar permanent magnet 75 has not yet approached the second light gas contact 52 and the third light gas contact 61, so the two light gas contacts will not be connected, so the second light gas action and the third light gas action will not be triggered.

[0102] When the amount of gas released from the transformer exceeds the first preset amount of gas but does not reach the second preset amount of gas, the oil level in the relay gas chamber 2 continues to drop, causing the first light gas assembly 7 to continue to drop, and the light gas float 72 also continues to drop. During the drop, the bar permanent magnet 75 and the first light gas contact 51 remain connected, so the first light gas action is in a continuous state.

[0103] The first preset gas volume can be a set value corresponding to the first light gas action value, and the setting range can be designed to be 100 ml. The first light gas action value can be adjusted by adjusting the position adjustment screw 71 of the first light gas assembly 7 to adjust the relative position of the light gas float 72 on the float connecting rod 74, thereby achieving the adjustment of the first light gas action value. After adjusting the first light gas action value, the second light gas action value and the third light gas action value can be adaptively adjusted, but the ranges between the three remain unchanged.

[0104] like Fig. 9 As shown, when the amount of gas released inside the transformer reaches the second preset gas amount, the insulating oil level in the relay gas chamber 2 begins to drop, and the light gas float 72 of the first light gas component 7 floating on the surface also drops accordingly, and the bar permanent magnet 75 of the first light gas component 7 drops to the second light gas contact 52, and is adsorbed on the second light gas contact 52 to connect the second light gas contact 52, and the second light gas is actuated at this time. At this time, the first light gas action is in the maintenance state.

[0105] When the amount of gas released from the transformer exceeds the second preset amount of gas but does not reach the third preset amount of gas, the oil level in the relay gas chamber 2 continues to drop, causing the first light gas assembly 7 to continue to drop, and the light gas float 72 also continues to drop. During the dropping process, due to the restriction of the light gas limiting bracket, the bar permanent magnet 75 cannot move away from the second light gas contact 52, and the bar permanent magnet 75 and the second light gas contact 52 remain connected, so the second light gas action is in a continuous state;

[0106] The second preset gas volume can be a set value, corresponding to the second light gas action value, and the setting range can be designed to be 150 ml. The second light gas action value can be adjusted by adjusting the position adjustment screw 71 of the first light gas assembly 7 to adjust the relative position of the light gas float 72 on the float connecting rod 74, thereby achieving the adjustment of the second light gas action value. After adjusting the second light gas action value, the first light gas action value and the third light gas action value can be adaptively adjusted, but the range between the three remains unchanged.

[0107] like Fig.10 As shown, when the amount of gas released inside the transformer reaches the third preset gas amount, the insulating oil level in the relay gas chamber 2 begins to drop, and the light gas float 72 of the first light gas component 7 floating on the surface also drops accordingly, and the bar permanent magnet 75 of the first light gas component 7 drops to the third light gas contact 61, and is adsorbed on the third light gas contact 61 to connect the third light gas contact 61, and the third light gas is in action. At this time, the second light gas action is in the maintenance state. And the first light gas action is in the disconnection state.

[0108] When the amount of gas released from the transformer exceeds the third preset gas amount but does not reach the fourth preset gas amount, the oil level in the relay gas chamber 2 continues to drop, causing the first light gas assembly 7 to continue to drop, and the light gas float 72 also continues to drop. During the dropping process, due to the restriction of the light gas limiting bracket, the bar permanent magnet 75 cannot be far away from the second light gas contact 52 and the third light gas contact 61, and the bar permanent magnet 75 maintains a connection state with the second light gas contact 52 and the third light gas contact 61, so the second light gas action and the third light gas action are in a continuous state;

[0109] The third preset gas volume can be a set value, corresponding to the third light gas action value, and the setting range can be designed to be 200 ml. The third light gas action value can be adjusted by adjusting the position adjustment screw 71 of the first light gas assembly 7 to adjust the relative position of the light gas float 72 on the float connecting rod 74, thereby achieving the adjustment of the third light gas action value. After adjusting the third light gas action value, the first light gas action value and the second light gas action value can be adaptively adjusted, but the range between the three remains unchanged.

[0110] like Fig.11 As shown, when the amount of gas released inside the transformer reaches the fourth preset gas amount, the insulating oil level in the relay gas chamber 2 begins to drop, and the light gas float 72 of the second light gas component floating on the surface also drops accordingly, and the bar permanent magnet 75 of the second light gas component drops to the vicinity of the fourth light gas contact, and is adsorbed on the second light gas contact 52 to connect the fourth light gas contact, and the fourth light gas action is performed. At this time, the bar permanent magnet 75 has not yet approached the fifth light gas contact and the sixth light gas contact, so the two light gas contacts will not be connected, so the fifth light gas action and the sixth light gas action will not be triggered.

[0111] When the amount of gas released from the transformer exceeds the fourth preset amount of gas but does not reach the fifth preset amount of gas, the oil level in the relay gas chamber 2 continues to drop, causing the second light gas assembly to continue to drop, and the light gas float 72 also continues to drop. During the drop, the bar permanent magnet 75 and the fourth light gas contact point remain connected, so the fourth light gas action is in a continuous state.

[0112] The fourth preset gas volume can be a set value corresponding to the first light gas action value, and the setting range can be designed to be 300 ml. The fourth light gas action value can be adjusted by adjusting the position adjustment screw 71 of the second light gas assembly to adjust the relative position of the light gas float 72 on the float connecting rod 74, thereby achieving the adjustment of the fourth light gas action value. After adjusting the fourth light gas action value, the fifth light gas action value and the sixth light gas action value can be adaptively adjusted, but the ranges between the three remain unchanged.

[0113] like Fig.12 As shown, when the amount of gas released inside the transformer reaches the fifth preset gas amount, the insulating oil level in the relay gas chamber 2 begins to drop, and the light gas float 72 of the second light gas component floating on the surface also drops accordingly, and the bar permanent magnet 75 of the second light gas component drops to the vicinity of the fifth light gas contact, and is adsorbed on the fifth light gas contact to connect the fifth light gas contact, and the fifth light gas action is now in progress. At this time, the fourth light gas action is in the maintenance state.

[0114] When the amount of gas released from the transformer exceeds the fifth preset gas amount but does not reach the sixth preset gas amount, the oil level in the relay gas chamber 2 continues to drop, causing the second light gas assembly to continue to drop, and the light gas float 72 also continues to drop. During the drop, due to the restriction of the light gas limiting bracket, the bar permanent magnet 75 cannot move away from the fifth light gas contact point, and the bar permanent magnet 75 and the fifth light gas contact point remain connected, so the fifth light gas action is in a continuous state;

[0115] The fifth preset gas volume can be a set value, corresponding to the fifth light gas action value, and the setting range can be designed to be 350 ml. The fifth light gas action value can be adjusted by adjusting the position adjustment screw 71 of the second light gas assembly to adjust the relative position of the light gas float 72 on the float connecting rod 74, thereby achieving the adjustment of the fifth light gas action value. After adjusting the fifth light gas action value, the fourth light gas action value and the sixth light gas action value can be adaptively adjusted, but the range between the three remains unchanged.

[0116] like Fig.13 As shown, when the amount of gas released inside the transformer reaches the sixth preset gas amount, the insulating oil level in the relay gas chamber 2 begins to drop, and the light gas float 72 of the second light gas component floating on the surface also drops accordingly, and the bar permanent magnet 75 of the second light gas component drops to the vicinity of the sixth light gas contact, and is adsorbed on the sixth light gas contact to connect the sixth light gas contact, and the sixth light gas action is now in progress. At this time, the fifth light gas action is in the maintenance state. And the fourth light gas action is in the disconnection state.

[0117] When the amount of gas released from the transformer exceeds the sixth preset gas amount but does not reach the seventh preset gas amount, the oil level in the relay gas chamber 2 continues to drop, causing the second light gas assembly to continue to drop, and the light gas float 72 also continues to drop. During the drop, due to the restriction of the light gas limiting bracket, the bar permanent magnet 75 cannot be away from the fifth light gas contact and the sixth light gas contact. The bar permanent magnet 75 maintains a connection state with the fifth light gas contact and the sixth light gas contact, so the fifth light gas action and the sixth light gas action are in a continuous state.

[0118] The sixth preset gas volume can be a set value, corresponding to the sixth light gas action value, and the setting range can be designed to be 400 ml. The sixth light gas action value can be adjusted by adjusting the position adjustment screw 71 of the second light gas assembly to adjust the relative position of the light gas float 72 on the float connecting rod 74, thereby achieving the adjustment of the sixth light gas action value. After adjusting the sixth light gas action value, the fourth light gas action value and the fifth light gas action value can be adaptively adjusted, but the range between the three remains unchanged.

[0119] like Fig.14As shown, when the amount of gas released inside the transformer reaches the seventh preset gas amount, the insulating oil level in the relay gas chamber 2 begins to drop, and the light gas float 72 of the third light gas component floating on the surface also drops accordingly, and the bar permanent magnet 75 of the third light gas component drops to the vicinity of the seventh light gas contact, and is adsorbed on the seventh light gas contact to connect the seventh light gas contact, and the seventh light gas action is performed. At this time, the bar permanent magnet 75 has not yet approached the eighth light gas contact and the ninth light gas contact, so the two light gas contacts will not be connected, so the eighth light gas action and the ninth light gas action will not be triggered.

[0120] When the amount of gas released from the transformer exceeds the seventh preset gas amount but does not reach the eighth preset gas amount, the oil level in the relay gas chamber 2 continues to drop, causing the third light gas assembly to continue to drop, and the light gas float 72 also continues to drop. During the drop, the bar permanent magnet 75 and the seventh light gas contact point remain connected, so the seventh light gas action is in a continuous state.

[0121] The seventh preset gas volume can be a set value, corresponding to the seventh light gas action value, and the setting range can be designed to be 500 ml. The seventh light gas action value can be adjusted by adjusting the position adjustment screw 71 of the third light gas assembly to adjust the relative position of the light gas float 72 on the float connecting rod 74, thereby achieving the adjustment of the seventh light gas action value. After adjusting the seventh light gas action value, the eighth light gas action value and the ninth light gas action value can be adaptively adjusted, but the ranges between the three remain unchanged.

[0122] like Fig.15 As shown, when the amount of gas released inside the transformer reaches the eighth preset gas amount, the insulating oil level in the relay gas chamber 2 begins to drop, and the light gas float 72 of the third light gas component floating on the surface also drops accordingly, and the bar permanent magnet 75 of the third light gas component drops to the eighth light gas contact point, and is adsorbed on the eighth light gas contact point to connect the eighth light gas contact point, and the eighth light gas action is performed. At this time, the seventh light gas action is in the maintenance state.

[0123] When the amount of gas released from the transformer exceeds the eighth preset gas amount but does not reach the ninth preset gas amount, the oil level in the relay gas chamber 2 continues to drop, causing the third light gas assembly to continue to drop, and the light gas float 72 also continues to drop. During the drop, due to the restriction of the light gas limiting bracket, the bar permanent magnet 75 cannot move away from the eighth light gas contact, and the bar permanent magnet 75 and the third light gas contact 61 remain connected, so the eighth light gas action is in a continuous state;

[0124] The eighth preset gas volume can be a set value, corresponding to the eighth light gas action value, and the set range can be designed to be 550 ml. The eighth light gas action value can be adjusted by adjusting the position adjustment screw 71 of the third light gas assembly to adjust the relative position of the light gas float 72 on the float connecting rod 74, thereby achieving the adjustment of the eighth light gas action value. After adjusting the eighth light gas action value, the seventh light gas action value and the ninth light gas action value can be adaptively adjusted, but the range between the three remains unchanged.

[0125] like Fig.16 As shown, when the amount of gas released inside the transformer reaches the ninth preset gas amount, the insulating oil level in the relay gas chamber 2 begins to drop, and the light gas float 72 of the third light gas component floating on the surface also drops accordingly, and the bar permanent magnet 75 of the third light gas component drops to the vicinity of the ninth light gas contact, and is adsorbed on the ninth light gas contact to connect the ninth light gas contact, and the ninth light gas is in action. At this time, the eighth light gas action is in the maintenance state. And the seventh light gas action is in the disconnection state.

[0126] When the amount of gas released from the transformer exceeds the ninth preset amount of gas, the oil level in the relay gas chamber 2 continues to drop, causing the third light gas assembly to continue to drop, and the light gas float 72 also continues to drop. During the drop, due to the restriction of the light gas limiting bracket, the bar permanent magnet 75 cannot be far away from the eighth light gas contact point and the ninth light gas contact point, and the bar permanent magnet 75 and the eighth light gas contact point and the ninth light gas contact point are all maintained in the connected state, so the eighth light gas action and the ninth light gas action are in a continuous state;

[0127] The ninth preset gas volume can be a set value, corresponding to the ninth light gas action value, and the set range can be designed to be 600 ml. The ninth light gas action value can be adjusted by adjusting the position adjustment screw 71 of the third light gas assembly to adjust the relative position of the light gas float 72 on the float connecting rod 74, thereby achieving the adjustment of the ninth light gas action value. After adjusting the ninth light gas action value, the seventh light gas action value and the eighth light gas action value can be adaptively adjusted, but the range between the three remains unchanged.

[0128] By setting three light gas components corresponding to three light gas contacts respectively, when the gas amount inside the transformer changes, different light gas actions are driven respectively, so that the present application can respond accordingly according to the gas changes in the transformer, and the staff can quickly know the fault condition of the transformer based on the present application, speed up the diagnosis of the fault, and troubleshoot and repair the fault.

[0129] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A multi-stage light gas relay, It is characterized in that include: relay gas chamber and multiple light gas assemblies; Each of the light gas components is correspondingly provided with a plurality of light gas contacts and a plurality of light gas limiting brackets; The plurality of light gas components are all built into the relay air chamber and arranged longitudinally; The plurality of light gas contacts are respectively arranged at different heights of the chamber of the relay gas chamber. When the gas volume of the relay gas chamber increases and the oil level drops, the light gas float of the light gas assembly drops accordingly and connects the light gas contacts at corresponding heights respectively. The plurality of light gas limiting brackets are respectively used to limit the corresponding light gas buoys from continuing to descend after the corresponding light gas contacts are connected; It also includes a fixed shaft, and the plurality of light gas assemblies are sequentially arranged at different positions of the fixed shaft; The light gas assembly includes a buoy connecting rod, the midpoint of which is vertically connected to the fixed shaft; The buoy connecting rod is fixed with an auxiliary buoy, and each light gas assembly is equipped with 2 or 4 auxiliary buoys with adjustable heights. The light gas action value can be adjusted by adjusting the height of the auxiliary buoys.

2. A multi-stage light gas relay according to claim 1, It is characterized in that The number of the light gas contacts is 9, and each light gas component is provided with three light gas contacts.

3. A multi-stage light gas relay according to claim 1, It is characterized in that The number of the light gas limiting brackets is 6, and two light gas limiting brackets are correspondingly arranged for each light gas assembly.

4. A multi-stage light gas relay according to claim 1, It is characterized in that A permanent magnet is provided at the end of the light gas component for connecting the light gas contact.

5. A multi-stage light gas relay according to claim 1, It is characterized in that It also includes a light gas contact fixing component, which is fixed to the side wall of the relay air chamber and is used to fix the light gas contact.

6. A multi-stage light gas relay according to claim 1, It is characterized in that The light gas assembly comprises a light gas float, and the light gas float is movably connected to a fixed shaft.

7. A multi-stage light gas relay according to claim 6, It is characterized in that The light gas buoy is a vacuum structure or a light material.

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