Gas relay with light gas remote transmission function

Abstract

The utility model relates to a gas relay with a light gas remote transmission function, which comprises a light gas action assembly positioned in a gas relay body, and further comprises a laser displacement sensor assembly, the laser displacement sensor assembly comprises a shell, a laser sensor and a laser displacement floater, the laser sensor is installed in the shell, the shell is fixed to the outer side of the gas relay body, the laser sensor comprises a laser emitting part and a laser receiving part, and the laser emitting part is used for emitting laser to the laser displacement floater located in the gas relay body. According to the utility model, the gas relay is provided with the laser displacement sensor, the accurate light gas volume value is monitored in real time and uploaded, the light gas volume value can be obtained at the initial stage of a light gas fault, and the purpose of fault early warning can be achieved; after the light gas acts, whether the action is correct or not can be judged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gas relay technical field, concretely relates to a gas relay with light gas remote function. BACKGROUND

[0002] The gas relay is usually installed on the connecting pipeline of the transformer and the oil conservator. When a not serious turn-to-turn short circuit fault, discharge or single-phase grounding occurs in the transformer, the transformer oil and other materials will be decomposed to generate gas, which further causes the oil injection to impact the gas relay. The protection device reflecting the gas change formed by using this feature is called gas protection. The gas protection is mainly divided into three forms of light gas protection, heavy gas protection and oil loss (low oil level) protection. For example, the gas relay with independent heavy gas and oil loss functions disclosed in the authorized announcement No. CN111883385B.

[0003] When the transformer fails, the staff can determine the fault type of the transformer by the action of the gas relay and the alarm signal issued, and check whether the gas relay is correctly actuated. The light gas protection mode of the traditional gas relay is that when the transformer encounters insulation failure or other failure, the oil will rapidly expand and generate a large amount of gas when the oil temperature of the transformer rises sharply. The gas in the transformer moves upward and accumulates in the internal part of the gas relay. The gas volume value can only be roughly observed through the glass window on the shell, and the accurate light gas volume value cannot be monitored in real time, which brings trouble to the operation and maintenance personnel of the substation. UTILITARIAN CONTENT

[0004] The utility model aims at providing a gas relay with light gas remote function to solve the above technical problems.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] The gas relay with light gas remote function comprises a light gas action assembly located in the internal part of the gas relay body. The light gas action assembly comprises an upper float and a light gas reed tube. The gas relay further comprises a laser displacement sensor assembly. The laser displacement sensor assembly comprises a shell, a laser sensor and a laser displacement float. The laser sensor is installed in the shell. The shell is fixed to the outer side of the gas relay body. The laser sensor comprises a laser emitting part and a laser receiving part. The laser emitting part is used to emit laser to the laser displacement float located in the internal part of the gas relay body.

[0007] Further, the shell is fixed to the upper side of the gas relay body. The laser displacement float is located in a float cylinder. The float cylinder is vertically arranged. The internal part of the float cylinder is in communication with the oil liquid in the internal part of the gas relay body.

[0008] Further, the side wall of the float cylinder is provided with a vertically extending communication hole.

[0009] Further, the oil loss action assembly further comprises a lower float and an oil loss dry reed tube.

[0010] Further, the heavy gas action assembly further comprises a baffle and a heavy gas dry reed tube.

[0011] Further, the heavy gas action assembly further comprises a baffle and a heavy gas dry reed tube.

[0012] Further, the gas relay is provided with a glass window.

[0013] Further, the gas relay is provided with two glass windows which are arranged in an upper and lower interval.

[0014] The gas relay has the advantages that:

[0015] (1) The gas relay is provided with a laser displacement sensor, and the precision is high in an effective measurement range, so that the gas relay can monitor and upload the accurate light gas volume value in real time.

[0016] (2) The gas protection part adopts a double-float structure, and the structure is simple and reliable in action.

[0017] (3) The gas relay is provided with a glass window on the front surface and is provided with a scale, so that the glass window is convenient to observe. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a sectional view of the gas relay with a light gas remote transmission function (part of components are shown);

[0019] Figure 2 is Figure 1 a perspective view of the laser displacement sensor assembly in the gas relay;

[0020] Figure 3is the partial structure view of the gas relay of the utility model;

[0021] Figure 4 is Figure 3 the view of another angle of the structure shown in the figure;

[0022] Figure 5 is Figure 4 the partial structure view in the figure.

[0023] 1, gas relay body;2, laser displacement sensor assembly;21, laser sensor;22, float cylinder;23, laser displacement float;24, communication hole;3, gas release plug;5, glass window;61, upper float;62, first light gas reed tube;63, first light gas magnet;64, upper float rotating frame;65, second light gas magnet;66, second light gas reed tube;67, third light gas reed tube;68, third light gas magnet;71, baffle;711, driving part;72, heavy gas magnet;73, heavy gas reed tube;81, lower float;82, oil loss reed tube;83, oil loss magnet;84, lower float rotating frame;85, hinged shaft. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art belong to the scope of protection of the utility model.

[0025] Embodiments of the utility model:

[0026] As Figures 1-5 shown, the gas relay with light gas remote transmission function comprises a gas relay body 1, a gas release plug 3 and an electrical box provided at the top of the gas relay body 1, and the like, which are prior art and will not be described in detail. The gas relay body 1 is internally provided with a light gas action assembly, and the light gas action assembly comprises an upper float 61 and a light gas reed tube. The upper float 61 is a floating ball, i.e. an upper floating ball. The upper float 61 is arranged on an upper float rotating frame 64, the upper float rotating frame 64 is in a U shape, and the upper float rotating frame 64 is rotatable. When the internal fault of the transformer oil tank is relatively slight or in the initial stage, the oil in the oil tank is decomposed and gasified, a small amount of gas is accumulated at the top of the gas relay, the oil level is lowered, the upper float 61 is lowered to the position of the limiting sheet, the magnet is driven to attract the light gas reed tube to form a closed loop, and a light gas alarm signal is transmitted.

[0027] Figure 3Two light gas reed tubes are shown, denoted as a first light gas reed tube 62 and a second light gas reed tube 66, and a float rotating frame 64 is provided with a first light gas magnet 63 and a second light gas magnet 65 corresponding to the first light gas reed tube 62 and the second light gas reed tube 66 respectively. After triggering, the first light gas reed tube 62 and the second light gas reed tube 66 can transmit alarm signals to different positions. The light gas reed tubes can also be provided with three, such as a third light gas reed tube 67 and a third light gas magnet 68 as shown. Figure 5

[0028] As shown in Figure 1 and Figure 2 , the gas relay further comprises a laser displacement sensor assembly 2, which comprises a housing, a laser sensor 21 and a laser displacement float 23. The laser sensor 21 is installed in the housing, and the housing is fixed to the outside of the gas relay body 1. The laser sensor 21 comprises a laser emitting part and a laser receiving part, and the laser emitting part is used to emit laser to the laser displacement float 23 located in the gas relay body 1.

[0029] The housing is fixed to the upper side of the gas relay body 1, and the laser displacement float 23 is located in the float cylinder 22. The float cylinder 22 is vertically arranged, and the inside of the float cylinder 22 is in communication with the oil liquid in the gas relay body 1. The side wall of the float cylinder 22 is provided with a vertical communication hole 24 for communication between the inside and outside of the float cylinder 22.

[0030] The laser displacement float 23 can float up and down in the float cylinder 22, and the floating is performed along with the change of the oil liquid height in the gas relay body 1. As shown in Figure 1 , the laser displacement float 23 has three positions A, B and C. Different positions of the laser displacement float 23 result in different signals detected by the laser sensor 21. Through program calculation, the change of the oil liquid height can be obtained, and the oil liquid height can reflect the gas volume. Through conversion, the light gas volume value can be obtained in real time. Real-time monitoring of the gas volume in the gas relay is realized. In addition, according to the light gas volume value, the accuracy of the action of the light gas action assembly can be judged, and whether it is a light gas false alarm can be known in the first time.

[0031] As shown in Figures 3-5 ​As shown, the gas relay body 1 is further provided with an oil loss action assembly and a heavy gas action assembly, which share a set of reed tubes and magnets. For the convenience of description, the reed tubes at different positions are also distinguished. The oil loss action assembly comprises a lower float 81 and an oil loss reed tube 82. When the lower float 81 drops to a certain position, the oil loss reed tube 82 can be triggered. The lower float 81 is a floating ball, i.e. a lower floating ball. The lower float 81 is installed on a lower float rotating frame 84, which is in the shape of a whole U. The lower float rotating frame 84 is hinged to a support plate, and the upper float rotating frame 64 is also hinged to the support plate. The side of the support plate is also used for installing the reed tubes.

[0032] Based on the above light gas alarm, when the transformer oil continues to be lost, the oil in the oil tank, oil pipeline and device is emptied, the lower float 81 sinks, driving the oil loss magnet 83 on the lower float rotating frame 84 to move, and forming a closed loop with the oil loss reed tube 82, starting the oil loss protection, and cutting off the power supply connected to the transformer (tripping).

[0033] As shown in Figures 3-5 The heavy gas action assembly comprises a baffle 71 and a heavy gas reed tube 73. The baffle 71 is hingedly arranged, and shares a hinge shaft 85 with the lower float rotating frame 84. The heavy gas reed tube 73 is also provided with two, one of which is marked in the figure. When the lower float 81 sinks, it can drive the lower float rotating frame 84 to rotate. When the baffle 71 is impacted by the oil flow and deviates to a set position, the heavy gas reed tube 73 can be triggered, and when the baffle 71 rotates, it can drive the lower float rotating frame 84 to rotate, and the heavy gas magnet 72 triggers the oil loss reed tube 82. The bottom of the baffle 71 is provided with a driving part 711, which can be the head end of a round head screw. When the baffle 71 is rotated by the impact of the oil flow, the driving part 711 drives the lower float rotating frame 84 to rotate in the same direction, and when it is rotated to the position, the oil loss reed tube 82 and the heavy gas reed tube 73 can both be triggered.

[0034] When a serious fault occurs in the transformer oil tank, the oil in the oil tank is decomposed and vaporized, generating a large amount of gas, and the pressure in the oil tank rises sharply. The gas and oil flow rapidly to the oil tank, from the left side to the right side of the gas relay, and the gas and oil flow impact the baffle 71. When the flow rate reaches the setting value of the heavy gas, the heavy gas magnet 72 on the lower float rotating frame 84 triggers the heavy gas reed tube 73, and the oil loss magnet 83 on the lower float rotating frame 84 triggers the oil loss reed tube 82, sending a tripping action signal, and cutting off the power supply connected to the transformer.

[0035] In other embodiments, the heavy gas action assembly and the oil flow loss action assembly can act independently, as in the prior patents cited in the background. The heavy gas action assembly includes a baffle 71 and a heavy gas reed tube 73. The baffle 71 is hingedly arranged. When the baffle 71 is impacted by the oil flow and deviates to a set position, the heavy gas reed tube 73 can be triggered.

[0036] As shown in Figure 1 One side of the gas relay is provided with a glass window 5, which is one side in the front-back direction of the gas relay. The glass window 5 is marked with a scale. The design of the glass window 5 retains the function of observing the internal situation of the traditional gas relay. In this embodiment, two glass windows 5 are arranged on the opposite sides, and the upper and lower glass windows 5 on the same side are arranged at intervals. The upper glass window 5 on the same side corresponds to the position of the laser displacement float 23, and the action of the laser displacement float 23 can be observed. It is also convenient to view and compare the actual situation on the basis of the data monitored by the laser sensor 21.

Claims

1. A gas relay with light gas remote transmission function, comprising a light gas action assembly located in the interior of a gas relay body, the light gas action assembly comprising an upper float and a light gas reed tube, characterized in that: The gas relay further comprises a laser displacement sensor assembly, the laser displacement sensor assembly comprising a housing, a laser sensor and a laser displacement float, the laser sensor being installed in the housing, the housing being fixed to the outside of the gas relay body, the laser sensor comprising a laser emitting part and a laser receiving part, the laser emitting part being used for emitting laser to the laser displacement float located in the gas relay body.

2. The gas relay with light gas remote transmission function according to claim 1, characterized in that: The housing is fixed to the upper side of the gas relay body, the laser displacement float is located in a float cylinder, the float cylinder is vertically arranged, and the inside of the float cylinder is in communication with the oil liquid in the gas relay body.

3. The gas relay with light gas remote transmission function according to claim 2, characterized in that: The side wall of the float cylinder is provided with a vertically extending communication hole.

4. The gas relay with light gas remote transmission function according to claim 1, characterized in that: The gas relay body is further provided with an oil flow loss action assembly, the oil flow loss action assembly comprising a lower float and an oil flow loss dry reed tube, the lower float descending to a certain position can trigger the oil flow loss dry reed tube.

5. The gas relay with light gas remote transmission function according to claim 1, characterized in that: The gas relay body is further provided with a heavy gas action assembly, the heavy gas action assembly comprising a baffle and a heavy gas dry reed tube, the baffle being hingedly arranged, the baffle being deviated to a set position by the impact of the oil flow to trigger the heavy gas dry reed tube.

6. The gas relay with light gas remote transmission function according to claim 4, characterized in that: The gas relay body is further provided with a heavy gas action assembly, the heavy gas action assembly comprising a baffle and a heavy gas dry reed tube, the baffle being hingedly arranged, the baffle being deviated to a set position by the impact of the oil flow to trigger the heavy gas dry reed tube, and the baffle rotating can drive the lower float rotating frame, in which the lower float is located, to rotate.

7. The gas relay with light gas remote transmission function according to any one of claims 1 to 6, characterized in that: One side of the gas relay is provided with a glass window.

8. The gas relay with light gas remote transmission function according to claim 7, characterized in that: The glass window is provided with two, and is arranged in an upper and lower interval, wherein the upper glass window corresponds to the position of the laser displacement float.

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