CN211404401U - Multi-buoy type gas relay device - Google Patents
Multi-buoy type gas relay device Download PDFInfo
- Publication number
- CN211404401U CN211404401U CN202020146678.1U CN202020146678U CN211404401U CN 211404401 U CN211404401 U CN 211404401U CN 202020146678 U CN202020146678 U CN 202020146678U CN 211404401 U CN211404401 U CN 211404401U
- Authority
- CN
- China
- Prior art keywords
- gas
- light gas
- light
- relay
- contacts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Level Indicators Using A Float (AREA)
Abstract
The application discloses many pontoon type gas relay device includes: the gas-liquid separation device comprises a relay gas chamber, a plurality of light gas components, a plurality of light gas contacts and a plurality of light gas limiting brackets; the number of the light gas components and the number of the light gas limiting brackets are the same as the number of the light gas contacts; a plurality of light gas components are all arranged in the relay gas chamber; the light gas contacts are respectively arranged at different heights of the cavity of the relay gas chamber, and when the gas volume of the relay gas chamber is increased and the oil level is lowered, the light gas buoy of the light gas component is lowered along with the light gas contacts and is respectively connected with the light gas contacts at corresponding heights. This application is different through the action at the light gas contact of the different degree of gas release volume, and the operation maintainer who has solved among the prior art often can not find the inside developmental fault defect of main transformer, and the development condition of main transformer body internal fault does not have obvious extrinsic feature quantity reaction, consequently is difficult to in time discover the technical problem of problem.
Description
Technical Field
The application relates to the technical field of gas relays, in particular to a multi-buoy type gas relay device.
Background
The existing gas relay uses the internal fault of the transformer to make the oil or insulating material decompose to generate gas or cause the oil flow to surge, so as to make the contact of the gas relay act and send out the alarm signal (light gas) or automatically cut off the transformer (heavy gas). When light gas mainly reflects operation or slight faults (such as overload heating, iron core local heating, oil tank heating caused by magnetic leakage and the like), gas decomposed by oil or insulating materials rises to enter a gas collection chamber of the gas relay, the oil level slowly descends due to air pressure, a float bowl or an opening cup of the relay falls along with the oil level, a contact of a light gas dry spring is connected to send a signal, and the action of heavy gas is caused due to the further descending of the oil level or the increase of oil-gas flow. Heavy gas mainly reflects that when serious faults such as bushing grounding, turn-to-turn short circuit and the like occur in the transformer, a large amount of gas is quickly generated to push oil flow to impact a baffle plate, and a magnet on the baffle plate attracts a heavy gas dry spring contact to be conducted to trip.
Generally, after the light gas action sends an alarm signal, a worker is arranged to confirm the actual conditions (including appearance abnormality, gas leakage, sound abnormality, whether gas in the light gas chamber is combustible, and the like) of the main transformer body on site, and then reports the actual conditions to a professional technician according to the actual conditions on site to confirm whether power failure occurs to perform related inspection (including gas analysis, main transformer related tests, gas relay inspection, related loop inspection, and the like), so as to determine whether the main transformer internal fault occurs. The existing gas relay generally sends an alarm signal through a single light gas action to remind an operation maintainer to carry out on-site inspection on whether each part of a transformer is abnormal or not, and meanwhile, the gas components of the light gas action are inspected. In the process, the arrival time of personnel is uncertain, operation maintainers cannot find the defect of the internal fault of the main transformer due to the limitation of the prior art after the personnel arrive, and the development condition of the internal fault of the main transformer body has no obvious external characteristic quantity response, so that the problems are difficult to find in time.
SUMMERY OF THE UTILITY MODEL
The application provides a many pontoon gas relay device, and the development trouble defect that the operation maintainer among the prior art often has not found the main inside of becoming by the way, and the development condition of main body internal fault becomes obvious external characteristic quantity reaction not, consequently is difficult to in time discover the technical problem of problem.
The application provides a many pontoon gas relay device includes:
the gas-liquid separation device comprises a relay gas chamber, a plurality of light gas components, a plurality of light gas contacts and a plurality of light gas limiting brackets;
the number of the light gas components and the number of the light gas limiting brackets are the same as the number of the light gas contacts;
the light gas components are all arranged in the relay gas chamber;
the plurality of light gas contacts are respectively arranged at different heights of the cavity of the relay gas chamber, and when the gas volume of the relay gas chamber is increased and the oil level is lowered, the light gas buoy of the light gas component is lowered along with the light gas contacts, and the light gas contacts with corresponding heights are respectively connected;
the light gas limiting brackets are respectively used for limiting the corresponding light gas buoys to continuously descend after the corresponding light gas contacts are connected.
Optionally, the volume of the relay gas chamber is greater than or equal to 900 ml.
Optionally, the number of light gas contacts is 3.
Optionally, any two of the light gas contacts are arranged in the cavity of the relay gas chamber at the same interval according to volume scales.
Optionally, the light gas component is provided with a permanent magnet at the end for connecting the light gas contacts.
Optionally, the light gas buoy is of a vacuum structure.
Optionally, the material inside the light gas buoy is a light material.
Optionally, the lighting device further comprises a fixing shaft, wherein two ends of the fixing shaft are respectively fixed to two side surfaces of the relay electric room and movably connected with the plurality of light gas components.
The application provides a many pontoon gas relay device includes:
the gas-liquid separation device comprises a relay gas chamber, a plurality of light gas components, a plurality of light gas contacts and a plurality of light gas limiting brackets;
the number of the light gas components and the number of the light gas limiting brackets are the same as the number of the light gas contacts;
the light gas components are all arranged in the relay gas chamber;
the plurality of light gas contacts are respectively arranged at different heights of the cavity of the relay gas chamber, and when the gas volume of the relay gas chamber is increased and the oil level is lowered, the light gas buoy of the light gas component is lowered along with the light gas contacts, and the light gas contacts with corresponding heights are respectively connected;
the light gas limiting brackets are respectively used for limiting the corresponding light gas buoys to continuously descend after the corresponding light gas contacts are connected.
The application provides a many pontoon gas relay device, can be through a plurality of light gas contacts, make the oil level at relay air chamber inside begin to descend, when gaseous increases, light gas subassembly rotates to its light gas flotation pontoon and switches on the light gas contact of the difference that sets up in relay air chamber's inside respectively, every light gas contact of putting through, the light gas action of this light gas contact of putting through, make and put through the light gas contact action of driving different respectively under different gas capacity, realize according to the increase of the inside gas release amount of transformer, and lead to light gas action contact quantity different, so that make the staff judge relay device's operating condition according to the light gas action of difference, and relay electric chamber's gas volume is greater than or equal to 900ml, make relay device can hold more gas. The action difference at the light gas contact of the different degree of gas release volume has been solved to this application, and the operation maintainer who has solved among the prior art often can not find the inside developmental fault defect of transformer, and the development condition of the inside trouble of transformer body does not have obvious extrinsic feature quantity reaction, consequently is difficult to in time discover the technical problem of problem.
Drawings
Fig. 1 is a schematic structural diagram of a multi-float gas relay device provided in the present application;
fig. 2 is a top view of an internal structure of a multi-float gas relay device provided in the present application;
FIG. 3 is a first side view of a light gas assembly of a multi-float gas relay device according to the present application;
fig. 4 is a schematic diagram illustrating an operation state of a multi-float gas relay device according to the present application;
fig. 5 is a schematic diagram illustrating a state of the multi-float gas relay device during a first light gas operation;
fig. 6 is a schematic diagram illustrating a second light gas operation state of the multi-float gas relay device according to the present application;
fig. 7 is a schematic diagram illustrating states of a first light gas and a second light gas of a multi-float gas relay device according to the present application during operation;
fig. 8 is a schematic diagram illustrating a third light gas operation state of the multi-float gas relay device according to the present application;
reference numerals: a first light gas module 10; a second light gas module 20; a third light gas module 30; a fixed shaft 40; a first light gas limiting bracket 51; a second light gas limiting bracket 52; a third light gas limiting bracket 53; a first light gas contact 61; a second light gas contact 62; a third light gas contact 63; a relay air chamber 70; an end point 41; a bearing inner connecting member 42; a float position adjusting screw 11; a light gas buoy 12; a bearing outer connecting member 13; a pontoon connecting rod 14; and a permanent magnet 15.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Because the existing gas relay generally sends out an alarm signal through a single light gas action to remind an operation maintainer to check whether the transformer is abnormal or not and simultaneously check the gas components triggering the light gas action. However, in the whole process, the time for the operation maintainer to arrive at the alarm site is uncertain, the operation maintainer arrives at the alarm site due to the limitation of the prior art, and the operation maintainer cannot easily check the defects in the main transformer body due to the fact that the faults caused by the defects in the main transformer body are not obvious in the representation of the external characteristic quantity.
After the existing gas relay generates single light gas action, even if the gas in the relay increases, the light gas relay can not act again to prompt the change of the gas quantity. That is, when there is a developmental fault in the main transformer, if the conventional gas relay does not perform the air bleeding and returning operation in the light gas operation, the light gas will not operate again even if the gas is continuously released. Therefore, the present invention is provided to operate at the initial stage of the development of the fault and trip the respective side breakers of the transformer, so that the buchholz relay can respond differently in stages according to different amounts of gas discharged when the transformer continuously discharges the gas in a short time.
In the operation process of the existing main transformer, the main transformer light gas relay acts due to oil path pipeline problems, structural problems or other conditions causing slow gas release or gas release amount increase, and an alarm signal is sent by mistake. However, in this case, the time 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, so that the phenomenon of mistaken 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 in the present application.
In a certain time after main transformer debugging, overhauling or oil filtering and then inputting, stagnant gas can be gradually released from a transformer, when the released amount of the stagnant gas reaches the threshold value of light gas action and causes corresponding light gas action, the situation is different from the time length of the light gas action caused by decomposed gas generated by faults when the main transformer debugging, overhauling or oil filtering and then inputting into operation, but the logic of the light gas action set in the prior art does not consider the time length of the light gas action when the main transformer debugging, overhauling or oil filtering and then inputting into operation, so that the stagnant gas or the fault decomposed gas which causes the light gas action is difficult to distinguish, and therefore, both the stagnant gas and the fault decomposed gas can cause alarm. The present application also makes corresponding adjustments to this phenomenon.
The application provides a many pontoon gas relay, and the action through the light gas contact at the different degree of gas release volume is different, has solved the inside developmental fault defect of transformer that the operation maintainer often has not found the way among the prior art, and the development condition of transformer body internal fault does not have obvious extrinsic characteristic volume reaction, consequently is difficult to the technical problem of in time finding the problem.
For ease of understanding, please refer to fig. 1-8.
The application provides a many pontoon gas relay device includes:
a relay chamber 70, a plurality of light gas components, a plurality of light gas contacts, and a plurality of light gas limiting brackets;
the number of the light gas components and the number of the light gas limiting brackets are the same as the number of the light gas contacts;
a plurality of light gas components are all arranged in the relay gas chamber 70;
the plurality of light gas contacts are respectively arranged at different heights of the containing cavity of the relay air chamber 70, and when the gas volume of the relay air chamber is increased and the oil level is lowered, the light gas buoy of the light gas component is lowered along with the gas volume, and the light gas contacts with corresponding heights are respectively connected;
the light gas limiting brackets are respectively used for limiting the corresponding light gas buoys to continuously descend after the corresponding light gas contacts are connected.
In the multi-float type gas relay device according to the embodiment of the present invention, on the basis of the conventional light gas relay chamber 70, the volume of the light gas float of the plurality of light gas components provided inside the relay chamber 70 is reduced, and at the same time, the plurality of light gas components, the plurality of light gas contacts, and the plurality of light gas limiting brackets are provided inside the cavity of the relay chamber 70. And, the number of the light gas components, the light gas contacts and the light gas restricting bracket is the same. When the volume of the gas in the relay air chamber 70 is gradually increased, the oil level in the corresponding relay air chamber 70 is lowered, and the light gas buoys of the plurality of light gas assemblies arranged in the cavity of the relay air chamber 70 are all lowered along with the lowering of the oil level. For example, when the oil level drops to a preset action value of the first light gas, the light gas buoy of the first light gas component 10 is connected to the first light gas contact corresponding to the action value, and at this time, the first light gas limiting bracket 51 will limit the light gas buoy of the first light gas component 10 to continue to drop, so that the first light gas contact is kept at the connected position; similarly, when the volume of the gas in the relay chamber 70 continues to increase and the oil level continues to decrease to the action value of the second light gas, the action process of the light gas buoy of the second light gas component 20 is the same as that of the first light gas component 10; when the volume of the gas in the relay gas chamber 70 continues to increase and the oil level continues to decrease to the action value of the third light gas, the action process of the light gas buoy of the third light gas component 30 is the same as that of the first light gas component 10; the operation process of the subsequent light gas module is the same as that of the first light gas module 10, and is not repeated herein. And as shown in fig. 1, the action value of the first light gas may be 200 ml; the action value of the second light gas may be 400 ml; the action value of the third light gas may be 600 ml.
Further, the volume of the relay air chamber 70 is more than or equal to 900 ml;
it should be noted that the present application also increases the height of the relay gas chamber 70, so that the volume of the relay gas chamber 70 in the relay device is sufficient to meet the requirement of gas of more than 900 ml.
Further, the number of light gas contacts is 3.
It should be noted that the number of the light gas components, the light gas joints and the light gas limiting brackets can be all 3, wherein the action value of the first light gas component 10 can be set to 200 ml as shown in fig. 1; the action value of the second light gas module 20 may be set to 400 ml as shown in fig. 1; the action value of the third light gas module 30 may be 600 ml as shown in fig. 1. The light gas contact is arranged as shown in fig. 1, and can be a dry-yellow contact, and when the permanent magnet of the light gas buoy approaches, the light gas buoy is connected with the permanent magnet, and when the permanent magnet is far away, the light gas buoy is disconnected.
Further, any two of the light gas contacts are arranged in the cavity of the relay gas chamber 70 at the same interval.
It should be noted that, as shown in fig. 1, the relay air chamber 70 may be a conductive metal structure, and may be configured as a square structure, a connection pipe is disposed at the bottom of the relay air chamber 70, and through the connection pipe, connection with a pipe from the upper portion of the transformer to the conservator may be achieved, a port of the connection pipe may be circular, and the inner diameter of the connection pipe is adapted to the size of the pipe of the transformer to be connected. The light gas limiting brackets in the figure are respectively arranged at scales corresponding to different light gas action values, and a light gas contact is arranged below each light gas limiting bracket.
Further, the tail end of the light gas component is provided with a permanent magnet for connecting a plurality of light gas contacts.
It should be noted that, as shown in fig. 3, all the light gas components have the same structure, taking the first light gas component 10 as an example, the light gas component is provided with a light gas buoy 12, the light gas buoy 12 is fixed on a buoy connecting rod 14 of the light gas component through buoy position adjusting screws 11 at both ends of the light gas buoy, and the buoy position adjusting screws 11 are all in threaded fit with the buoy connecting rod 14, so that the light gas buoy 12 is fixed on the buoy connecting rod 14. The relative position of the light gas buoy 12 on the light gas component can be further adjusted by adjusting the relative positions of the two buoy position adjusting screws 11 on the buoy connecting rod 14. The light gas component is matched with the fixed shaft 40 through the bearing outer connecting piece 13, and the light gas component can be connected with the fixed shaft 40 through the bearing outer connecting piece 13 and rotate by taking the fixed shaft 40 as a rotating shaft. The pontoon connecting rod 14 is a rod-shaped structure which traverses the light gas pontoon 12 in the figure, and is embedded with a bearing outer connecting piece 13, and the other end of the pontoon connecting rod is fixedly connected with a permanent magnet 15.
Further, the light gas buoy is of a vacuum structure.
It should be noted that, in order to realize the floating of the light gas buoy in the transformer insulating oil, the light gas buoy may be set to be in a vacuum structure so that the specific gravity of the whole light gas buoy is smaller than that of the transformer insulating oil.
Furthermore, the material of the interior of the light gas buoy is light material.
In order to realize the floating of the light gas buoy in the transformer insulating oil, the light gas buoy can be made of a light material, and the specific gravity of the whole light gas buoy can be smaller than that of the transformer insulating oil.
Further, still include fixed axle 40, the both ends of fixed axle 40 are fixed in the both sides of relaying electric room respectively, all swing joint with a plurality of light gas subassemblies.
It should be noted that both end points 41 of the fixing shaft 40 are fixed to both side surfaces of the relay air chamber 70, respectively, and all the light gas components are disposed on the fixing shaft 40 and spaced apart by the same distance, as shown in fig. 2. All the light gas components can rotate around the fixed shaft 40 by a certain radian by taking the fixed shaft 40 as a rotating shaft so as to be communicated with the corresponding light gas contact points. In particular, the fixing shaft 40 can be engaged or disengaged inside the relay air chamber 70 by its two end points 41.
Three bearing inner connecting pieces 42 are arranged in the middle of the fixed shaft 40 at equal intervals, the bearing inner connecting pieces 42 are respectively matched with the bearing outer connecting pieces of the light gas components to realize connection with the light gas components, and the light gas components can rotate relative to the fixed shaft 40 through relative movement of the bearing inner connecting pieces 42 and the bearing outer connecting pieces.
The application provides a many pontoon type gas relay device, its work flow is as follows:
as shown in fig. 4, when the transformer normally operates, the relay air chamber 70 of the multi-float type gas relay device is filled with transformer insulating oil, so that the light gas float floats on the upper portion of the relay air chamber 70, and the permanent magnets at the end portions of the three light gas components are all far away from the light gas contact, so that the first light gas contact 61, the second light gas contact 62 and the third light gas contact 63 are all in an off state.
As shown in fig. 5, when the gas release amount inside the transformer reaches a first preset gas amount, the oil level inside the relay gas chamber 70 starts to drop, so that all three light gas components drop along with the drop of the oil level, and the permanent magnet 15 of the first light gas component 10 is close to and adsorbed on the first light gas contact 61, so that the first light gas contact 61 is switched on, and a first light gas action is initiated; at this time, the permanent magnets of the second light gas module 20 and the third light gas module 30 are not attracted to the first light gas contact 61, and thus the second light gas operation and the third light gas operation are not caused.
When the amount of gas released from the inside of the transformer is greater than or equal to the first predetermined gas amount and does not reach the second predetermined gas amount, the first light gas limiting bracket 51 disposed on the upper portion of the first light gas contact 61 limits the first light gas component 10 to prevent the light gas buoy from descending, so that the first light gas contact 61 is continuously kept in the connected state, and the action of the first light gas contact 61 is kept. In particular, the preset value of the gas release amount of the first light gas action can be set to 250 ml to 300 ml, and the relative position of the light gas buoy 12 on the buoy connecting rod 14 is adjusted by adjusting the buoy position adjusting screw of the first light gas assembly 10, so as to realize the presetting of the first preset gas amount.
As shown in fig. 6 and 7, when the amount of gas released from the inside of the transformer gradually increases from the first predetermined gas amount to the second predetermined gas amount, the oil level in the relay gas chamber 70 continues to decrease, so that the light gas buoys of the second light gas component 20 and the third light gas component 30, which are not connected to the light gas contacts, both decrease, so that the permanent magnet of the second light gas component 20 decreases to be close to and adsorbed on the second light gas contact 62, thereby triggering the second light gas action. At this time, the permanent magnet of the third light gas component 30 is not attracted to the second light gas contact 62 and thus the third light gas action is not triggered.
When the gas amount inside the transformer increases to exceed the second predetermined gas amount and does not reach the third predetermined gas amount, the second light gas limiting bracket 52 disposed on the upper portion of the second light gas contact 62 limits the second light gas component 20 to prevent the light gas buoy from further descending, so that the second light gas contact 62 is further kept in the connected state, and the action of the second light gas contact 62 is kept. In particular, the preset value of the gas release amount of the second light gas action can be set to 450 ml to 540 ml, and the relative position of the light gas buoy on the buoy connecting rod is adjusted by adjusting the buoy position adjusting screw of the second light gas assembly 20, so as to realize the preset of the second preset gas amount.
As shown in fig. 8, when the amount of gas released from the inside of the transformer gradually increases from the second predetermined gas amount to the third predetermined gas amount, the oil level in the relay gas chamber 70 continues to decrease, so that the light gas buoy of the third light gas module 30 which is not connected to the light gas contact point decreases, and the permanent magnet of the third light gas module 30 decreases to be close to and adsorbed on the third light gas contact point 63, thereby triggering the third light gas action.
When the gas amount in the transformer increases to exceed a third preset gas amount, the third light gas contact 63 is kept in the connection state due to the limitation of the third light gas component 30 by the third light gas limiting bracket 53 arranged at the upper part of the third light gas contact, so that the light gas buoy of the third light gas contact is prevented from further descending, and the action of the third light gas contact 63 is kept. In particular, the preset value of the gas release amount of the third light gas action can be set to 650 ml to 780 ml, and the relative position of the light gas buoy on the buoy connecting rod is adjusted by adjusting the buoy position adjusting screw of the third light gas component 30, so as to realize the presetting of the third preset gas amount.
According to the basic working process, the three light gas components can respectively drive different light gas contacts to be connected when the gas capacity in the transformer changes, so that the number of the contacts of the light gas action is changed according to the difference of the gas release amount in the transformer.
In particular, the first preset gas amount corresponding to the action value of the first light gas action in the application meets the standard requirement of the existing gas relay, and the action value meets the setting range of the existing light gas action value requirement; the action value of the second light gas can be set to be 0.8 times of the setting range of the first light gas plus the setting range of the first light gas; the action value of the second light gas can be set to be 0.8 times of the setting range of the first light gas plus the setting ranges of the two first light gases; therefore, the setting steps corresponding to the action values in the application can be obtained as follows: the first gas preset value corresponding to the action value of the first light gas can be 280 milliliters; the second gas preset value corresponding to the action value of the second light gas is 280 ml +220 ml; the action value of the third light gas corresponds to a third gas preset value of 280 ml +220 ml.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (8)
1. A multi-float gas relay device, comprising:
the gas-liquid separation device comprises a relay gas chamber, a plurality of light gas components, a plurality of light gas contacts and a plurality of light gas limiting brackets;
the number of the light gas components and the number of the light gas limiting brackets are the same as the number of the light gas contacts;
the light gas components are all arranged in the relay gas chamber;
the plurality of light gas contacts are respectively arranged at different heights of the cavity of the relay gas chamber, and when the gas volume of the relay gas chamber is increased and the oil level is lowered, the light gas buoy of the light gas component is lowered along with the light gas contacts, and the light gas contacts with corresponding heights are respectively connected;
the light gas limiting brackets are respectively used for limiting the corresponding light gas buoys to continuously descend after the corresponding light gas contacts are connected.
2. The multi-float gas relay device according to claim 1, wherein a volume of said relay gas chamber is 900ml or more.
3. The multi-float gas relay device according to claim 1, wherein the number of said light gas contacts is 3.
4. The multi-float gas relay device according to claim 2, wherein any two of said plurality of light gas contacts are spaced at the same height within said cavity of said relay chamber.
5. The multi-float gas relay device according to claim 1, wherein said light gas module is provided with a permanent magnet at its end for connecting said plurality of light gas contacts.
6. The multi-buoy gas relay device as claimed in claim 1, wherein the light gas buoy is a vacuum structure.
7. The multi-buoy gas relay device as claimed in claim 1, wherein the light gas buoy is made of a light material.
8. The multi-float gas relay device according to claim 1, further comprising a fixing shaft, wherein two ends of the fixing shaft are respectively fixed to two side surfaces of the relay gas chamber and movably connected to the plurality of light gas components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020146678.1U CN211404401U (en) | 2020-01-23 | 2020-01-23 | Multi-buoy type gas relay device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020146678.1U CN211404401U (en) | 2020-01-23 | 2020-01-23 | Multi-buoy type gas relay device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211404401U true CN211404401U (en) | 2020-09-01 |
Family
ID=72230113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020146678.1U Active CN211404401U (en) | 2020-01-23 | 2020-01-23 | Multi-buoy type gas relay device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211404401U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111161977A (en) * | 2020-01-23 | 2020-05-15 | 广东电网有限责任公司 | Multi-buoy type gas relay device |
-
2020
- 2020-01-23 CN CN202020146678.1U patent/CN211404401U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111161977A (en) * | 2020-01-23 | 2020-05-15 | 广东电网有限责任公司 | Multi-buoy type gas relay device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111261455A (en) | Single-buoy type multistage gas relay device | |
| CN211404401U (en) | Multi-buoy type gas relay device | |
| CN111128597A (en) | Light gas relay device | |
| CN211404400U (en) | Single-buoy type gas relay device | |
| CN211404392U (en) | Multistage light gas relay | |
| CN116206875A (en) | Device with gas protection and cutoff functions | |
| CN102157299B (en) | Online monitoring gas relay | |
| CN111162505A (en) | Multistage light gas protection device and method | |
| CN211404396U (en) | Light gas relay device | |
| CN211404393U (en) | Multi-cavity light gas relay | |
| CN103267043B (en) | Integrated automatic alarm device of hydraulic system | |
| CN111161977A (en) | Multi-buoy type gas relay device | |
| CN211628982U (en) | Single-buoy type multistage gas relay device | |
| CN111180259A (en) | Multistage light gas relay | |
| CN111477497A (en) | Intelligent double-floating-ball gas relay and monitoring system | |
| CN111146043A (en) | Single-buoy type gas relay device | |
| CN111146042A (en) | Multi-cavity light gas relay | |
| KR102025516B1 (en) | buchholz relay able to easily releasing gas for high voltage transformer of transforming substation | |
| CN213185480U (en) | Multistage light gas protection device | |
| CN211956232U (en) | Sump pit water level control device | |
| CN110911223B (en) | Gas relay for transformer | |
| CN111883385B (en) | Gas relay with independent heavy gas and oil loss functions | |
| CN214848366U (en) | Double-float gas relay | |
| CN203272342U (en) | Automatic integrated alarm device of hydraulic system | |
| CN2758963Y (en) | Gas relay |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |