Substation SF6 gas on-line monitoring device

Abstract

The utility model discloses an SF6 gas on-line monitoring device for a transformer station, which relates to the technical field of gas monitoring and comprises a monitoring host, a monitoring alarm assembly is fixedly mounted in the monitoring host, and a heat dissipation ventilation assembly is fixedly mounted at the top of the right side of the monitoring host. According to the on-line monitoring device for the SF6 gas in the transformer substation, the monitoring host can monitor the concentration of the SF6 gas in the transformer substation through the monitoring alarm assembly, and the alarm and the warning lamp can inform a control center in time when the concentration reaches a certain threshold value. Through the heat dissipation and ventilation assembly, rapid heat dissipation of electronic components in the monitoring host can be facilitated, impurities in external gas can be filtered through the arrangement of the filter screen, and dust is prevented from entering the monitoring host. And the sealing cover can be quickly detached by detaching the inspection assembly when the monitoring host fails, so that an operator can conveniently inspect and maintain the internal structure of the monitoring host, and the practicability is relatively high.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas monitoring technical field, especially a substation SF6 gas on -line monitoring device. BACKGROUND

[0002] SF6 is a non - combustible synthetic gas, chemical performance is extremely stable, its insulation capacity under normal pressure is 2.5 times more than air, arc extinguishing capacity is 100 times of air, has the insulating and arc extinguishing characteristics of general dielectric incomparable, therefore the monitoring of SF6 gas is its production and use indispensable part.

[0003] Chinese patent document CN214583856U discloses a kind of SF6 gas micro water density centralized on-line monitoring device, detection pipeline is connected with the detection host computer by plug connector, the plug connector includes fixed pipe, ball, mobile sleeve and connecting plug, the connecting plug is fixedly connected with the detection host computer, the connecting plug is inserted in the fixed pipe and is connected by ball, the fixed pipe is fixedly connected with the detection pipeline, the detection host computer side is fixed with fixed pin, the fixed pin is arranged in the sliding slot of wall body connecting piece.Using the above structure, a kind of SF6 gas on-line monitoring device is convenient and fast to install and disassemble, and is convenient for maintenance.

[0004] For the problems existing in the prior art: in the above device, if the detection host computer fails, it is more troublesome to maintain, and the operator cannot timely and quickly disassemble and check the detection host computer, and the practicability is low.Meanwhile, in the above device, the heat dissipation performance of the detection host computer is general, and during the long-term operation of the internal electronic structure, poor heat dissipation can accelerate the aging and damage of various components, and shorten the overall life of the device. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of substation SF6 gas on-line monitoring device to solve the problems raised in the above background.

[0006] To solve the above technical problems, the technical scheme adopted by the utility model is:

[0007] A kind of substation SF6 gas on-line monitoring device, including monitoring host computer, monitoring alarm component is fixedly installed in the inside of the monitoring host computer, heat dissipation ventilation component is fixedly installed at the right side top of the monitoring host computer, disassembly and check component is movably connected to the rear portion of the monitoring host computer.

[0008] Preferably, the monitoring alarm component includes SF6 sensor, the upper end of the SF6 sensor is fixedly installed with the middle part of the lower end of monitoring host computer, signal processing unit is fixedly installed on the inner wall bottom of the monitoring host computer, the output end of the SF6 sensor is connected with the input end of signal processing unit.

[0009] Preferably, a warning light is fixedly installed at the right part of the front bottom of the monitoring host, and an alarm is fixedly installed at the left part of the front bottom of the monitoring host, and the input ends of the warning light and the alarm are electrically connected with the output end of the signal processing unit.

[0010] Preferably, a fixed cylinder penetrating through the left part of the monitoring host is fixedly installed at the middle left part of the left side of the monitoring host, a fan is fixedly installed at the inner wall left part of the fixed cylinder, a conveying pipe penetrating through the bottom of the monitoring host is fixedly installed at the left end of the fixed cylinder, the fixed cylinder and the conveying pipe are communicated, and an electric valve is fixedly installed at the bottom of the inner cavity of the conveying pipe.

[0011] Preferably, the heat dissipation and ventilation assembly comprises a mounting frame, a ventilation groove is formed at the right top of the monitoring host, the left side of the mounting frame is fixedly installed at the right top of the monitoring host, a moving groove is formed at the upper end of the mounting frame, a filter screen is slidably connected with the inner wall of the moving groove, and a top plate is fixedly installed at the upper end of the filter screen.

[0012] Preferably, adjusting bolts are threadedly connected with the front and rear parts of the upper end of the top plate, threaded holes are formed at the front and rear positions of the right top of the monitoring host, and the outer wall left parts of the two adjusting bolts are threadedly connected with the inner walls of the two threaded holes.

[0013] Preferably, the dismounting and checking assembly comprises a cover, the inner wall of the cover is slidably connected with the rear outer wall of the monitoring host, plug rods penetrating through the upper and lower parts of the monitoring host are slidably connected with the front parts of the upper and lower ends of the cover, and elastic members are movably connected with the sides, away from each other, of the outer walls of the two plug rods.

[0014] Preferably, a mounting box is fixedly installed at the middle rear end of the cover, a push plate is slidably connected with the inner wall of the mounting box, sliding grooves are formed at the upper and lower parts of the inner wall of the mounting box, connecting plates are slidably connected with the inner walls of the two sliding grooves, the opposite sides of the two connecting plates are fixedly connected with the upper and lower ends of the push plate, rotating rods are rotatably connected with the sides, away from each other, of the two connecting plates, the ends, away from the two connecting plates, of the two rotating rods are rotatably connected with the ends, away from each other, of the two plug rods, a plurality of reset springs arranged in a linear mode are fixedly installed at the front side of the push plate, and the front ends of the plurality of reset springs are fixedly connected with the front part of the inner wall of the mounting box.

[0015] Thanks to the above technical scheme, the present application has the following technical progress compared with the prior art:

[0016] The utility model provides a transformer substation SF6 gas on -line monitoring device, and its through the cooperation between the cover, the plug rod, the elastic piece, the installation box, the push board, the connecting plate, the rotating rod and the reset spring can when the monitoring host computer fails, the cover is quickly disassembled, so that the monitoring host computer inside is exposed, and the operator checks and maintains its internal structure, among them, the cover's dismounting only needs to adjust the push board, and the operation is convenient, and the practicality is stronger.

[0017] The utility model provides a transformer substation SF6 gas on -line monitoring device, and its through the cooperation between the installation frame, the filter screen, the top plate and the adjusting peg can make the gas in the monitoring host computer and the outside gas exchange a lot, and the electronic element in the monitoring host computer is convenient to heat dissipation fast, simultaneously, the setting of filter screen can make the impurity in the outside gas is filtered, prevents the dust from entering the monitoring host computer, prolongs the service life of monitoring host computer. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is whole front view structure schematic diagram of the utility model;

[0019] Figure 2 It is whole bottom view structure schematic diagram of the utility model;

[0020] Figure 3 It is whole cross section explosion structure schematic diagram of the utility model;

[0021] Figure 4 It is heat dissipation ventilation subassembly structure schematic diagram of the utility model;

[0022] Figure 5 It is dismantling inspection subassembly structure schematic diagram of the utility model.

[0023] In the drawing: 1, monitoring host computer; 2, monitoring alarm subassembly; 3, heat dissipation ventilation subassembly; 4, dismantling inspection subassembly; 21, SF6 sensor; 22, signal processing unit; 23, warning light; 24, alarm; 25, fixed cylinder; 26, conveying pipe; 27, electric valve; 31, ventilation groove; 32, installation frame; 33, filter screen; 34, top plate; 35, adjusting peg; 36, screw hole; 41, cover; 42, plug rod; 43, elastic piece; 44, installation box; 45, push board; 46, sliding slot; 47, connecting plate; 48, rotating rod; 49, reset spring. DETAILED DESCRIPTION

[0024] In order to make the technical means, the creation features, the purposes and the effects of the utility model easy to understand, the following further describes the utility model in combination with specific embodiments.

[0025] For example, Figure 1 And Figure 2As shown, a substation SF6 gas on-line monitoring device, including monitoring host 1, monitoring host 1 inside fixed installation monitoring alarm components 2, monitoring host 1 right side top fixed installation heat dissipation ventilation components 3, monitoring host 1 rear movable connection with disassembly inspection components 4.

[0026] Through monitoring alarm components 2 can make monitoring host 1 can monitor the concentration of SF6 gas in the substation, concentration to a certain threshold when the alarm 24 and warning light 23 can timely inform the control center. Through the heat dissipation ventilation components 3 can make the gas in the monitoring host 1 and the outside gas exchange, facilitate the rapid heat dissipation of electronic components in the monitoring host, at the same time, the filter screen 33 can make the impurities in the outside gas is filtered, prevent dust into the monitoring host 1, prolong the service life of the monitoring host 1. Through the disassembly inspection components 4 can be in monitoring host 1 failure, the cover 41 is quickly disassembled, so that the monitoring host inside exposed, facilitate the operator to check and repair its internal structure, strong practicality.

[0027] As shown in Figure 3 , monitoring alarm components 2 includes SF6 sensor 21, the upper end of SF6 sensor 21 and the lower end of monitoring host 1 is fixedly installed in the middle, the inner wall of monitoring host 1 is fixedly installed with signal processing unit 22, the output end of SF6 sensor 21 is in communication connection with the input end of signal processing unit 22.

[0028] SF6 sensor 21 is an existing mechanism, which is a sulfur hexafluoride (SF6) gas leakage monitoring sensor developed based on non-dispersive infrared technology (NDIR), which can realize real-time online monitoring of SF6 gas concentration in the environment. When the SF6 gas concentration in the substation reaches a certain threshold, the SF6 sensor 21 can transmit the signal to the signal processing unit.

[0029] As shown in Figure 3 and Figure 4 , the warning light 23 is fixedly installed at the right position of the bottom of the front side of the monitoring host 1, and the alarm 24 is fixedly installed at the left position of the bottom of the front side of the monitoring host 1, and the input end of the warning light 23 and the alarm 24 is electrically connected with the output end of the signal processing unit 22.

[0030] The signal processing unit analyzes and processes the received signal, and then drives the warning light 23 and the alarm 24, so that the warning light 23 continuously emits light and the alarm 24 emits sound, thereby warning and informing the control center.

[0031] As shown in Figure 2 and Figure 3As shown, the left middle of the monitoring host 1 is fixedly installed with a fixed cylinder 25 penetrating through the left part of the monitoring host 1, the inner wall left part of the fixed cylinder 25 is fixedly installed with a fan, the left end of the fixed cylinder 25 is fixedly installed with a conveying pipe 26 penetrating through the bottom of the monitoring host 1, the fixed cylinder 25 is communicated with the conveying pipe 26, and the bottom of the inner cavity of the conveying pipe 26 is fixedly installed with an electric valve 27.

[0032] When the SF6 gas concentration of the transformer substation is too high, the fan is automatically started, which is a existing mechanism, and the SF6 gas can be sucked into the fixed cylinder 25 after the negative pressure is generated in the fixed cylinder 25, the fixed cylinder 25 is generally connected with a gas purification system, and the SF6 gas can be discharged only after being purified, so as to reduce the concentration of the SF6 gas in the transformer substation. The electric valve 27 can be automatically controlled by a switch, and the fan and the electric valve 27 are controlled by a signal processing unit.

[0033] As shown in Figure 4 , the heat dissipation and ventilation assembly 3 comprises a mounting frame 32, the right top of the monitoring host 1 is provided with a ventilation groove 31, the left side of the mounting frame 32 is fixedly installed with the right top of the monitoring host 1, the upper end of the mounting frame 32 is provided with a moving groove, the inner wall of the moving groove is slidably connected with a filter screen 33, and the upper end of the filter screen 33 is fixedly installed with a top plate 34.

[0034] The gases inside and outside the monitoring host 1 are exchanged by the ventilation groove 31, so as to realize the heat dissipation function of the internal electronic elements. The filter screen 33 can intercept impurities in the external gas, so as to ensure the stability of the motor elements in the monitoring host 1.

[0035] As shown in Figure 4 , the upper end of the top plate 34 is threadedly connected with adjusting bolts 35 at the front and rear parts, the front and rear positions of the right top of the monitoring host 1 are provided with threaded holes 36, and the outer walls of the two adjusting bolts 35 are threadedly connected with the inner walls of the two threaded holes 36.

[0036] The filter screen 33 can be fixed through the two adjusting bolts 35.

[0037] As shown in Figure 3 and Figure 5 , the disassembly and inspection assembly 4 comprises a cover 41, the inner wall of the cover 41 is slidably connected with the rear outer wall of the monitoring host 1, the front parts of the upper and lower ends of the cover 41 are slidably connected with insertion rods 42 penetrating through the upper and lower parts of the monitoring host 1, and the outer walls of the two insertion rods 42 are movably connected with elastic members 43 away from each other.

[0038] The cover 41 and the monitoring host 1 can be connected together through the two insertion rods 42, the elastic members 43 are springs, which can not only ensure the reset of the two insertion rods 42, but also prevent the two insertion rods 42 from being separated from the cover 41 when the operator adjusts the push plate 45.

[0039] As shown in Figure 5As shown, the rear end of the cover 41 is fixedly provided with a mounting box 44, the inner wall of the mounting box 44 is slidably connected with a push plate 45, the upper and lower portions of the inner wall of the mounting box 44 are provided with sliding grooves 46, the inner walls of the two sliding grooves 46 are slidably connected with connecting plates 47, the upper and lower ends of the push plate 45 are fixedly connected with the opposite sides of the two connecting plates 47, the sides away from each other of the two connecting plates 47 are rotatably connected with rotating rods 48, the ends away from the two connecting plates 47 of the two rotating rods 48 are rotatably connected with the ends away from each other of the two inserting rods 42, and the front side of the push plate 45 is fixedly provided with a plurality of linearly arranged reset springs 49, and the front ends of the plurality of reset springs 49 are fixedly connected with the front portion of the inner wall of the mounting box 44.

[0040] The push plate 45 is pushed, the two connecting plates 47 are slid in the corresponding sliding grooves 46, the two connecting plates 47 drive the corresponding two rotating rods 48 to rotate at one end, and the other end simultaneously pulls the two inserting rods 42 away from each other and away from the monitoring host 1, so that the cover 41 can be quickly disassembled, wherein the disassembly of the cover 41 only needs to adjust the push plate 45, and the operation is convenient. Meanwhile, the plurality of reset springs 49 reset the push plate 45, so that the movement of the two inserting rods 42 is more stable.

[0041] The working principle of the utility model: when the monitoring host 1 starts, SF6 sensor 21 can real-time on-line monitoring of SF6 gas concentration in the substation, when SF6 gas concentration in the substation reaches a certain threshold, SF6 sensor 21 can pass signal to signal processing unit, signal processing unit analyzes and processes the received signal, then drives warning light 23 and alarm 24, so that warning light 23 continuously emits light, alarm 24 rings, to warn and inform the control center. And when the SF6 gas concentration in the substation is too high, the fan is automatically started, the electric valve is automatically opened, and the fixed cylinder 25 generates negative pressure to suck SF6 gas into it. The fixed cylinder 25 is generally connected with the gas purification system, and the SF6 gas can be discharged only after being purified.

[0042] The inside and outside gases of the monitoring host 1 are exchanged by the ventilation slot 31 to realize the heat dissipation function of the internal electronic elements. The filter screen 33 can intercept impurities in the external gas to ensure the stability of the motor element operation in the monitoring host 1.

[0043] When the monitoring host 1 fails, the push plate 45 is pushed, the two connecting plates 47 are slid in the corresponding sliding grooves 46, the two connecting plates 47 drive the corresponding two rotating rods 48 to rotate at one end, and the other end simultaneously pulls the two inserting rods 42 away from each other and away from the monitoring host 1, so that the cover 41 can be quickly disassembled, and the disassembly of the cover 41 only needs to adjust the push plate 45, and the operation is convenient.

[0044] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A substation SF6 gas online monitoring device, comprising a monitoring host (1), characterized in that: A monitoring alarm component (2) is fixedly installed inside the monitoring host (1), a heat dissipation and ventilation component (3) is fixedly installed on the top right side of the monitoring host (1), and a disassembly inspection component (4) is movably connected to the rear of the monitoring host (1); The disassembly inspection assembly (4) includes a cover (41), the inner wall of the cover (41) is slidably connected to the rear outer wall of the monitoring host (1), the front parts of the upper and lower ends of the cover (41) are slidably connected to the insertion rods (42) that penetrate the upper and lower parts of the monitoring host (1), and the outer walls of the two insertion rods (42) are movably connected to the sides away from each other with elastic members (43); A mounting box (44) is fixedly installed at the middle of the rear end of the cover (41), and a push plate (45) is slidably connected to the inner wall of the mounting box (44). The upper and lower parts of the inner wall of the mounting box (44) are provided with sliding grooves (46), and the inner walls of the two sliding grooves (46) are slidably connected to connecting plates (47). The opposite sides of the two connecting plates (47) are fixedly connected to the upper and lower ends of the push plate (45), and the sides of the two connecting plates (47) away from each other are rotatably connected to rotating rods (48). One end of the two rotating rods (48) away from the two connecting plates (47) is rotatably connected to the other end of the two insertion rods (42) away from each other. A plurality of linearly arranged return springs (49) are fixedly installed on the front side of the push plate (45), and the front ends of the plurality of return springs (49) are fixedly connected to the front part of the inner wall of the mounting box (44).

2. The SF6 gas online monitoring device for a substation according to claim 1, characterized in that: The monitoring alarm component (2) includes an SF6 sensor (21), the upper end of the SF6 sensor (21) is fixedly mounted to the middle portion of the lower end of the monitoring host (1), a signal processing unit (22) is fixedly mounted to the bottom of the inner wall of the monitoring host (1), and the output end of the SF6 sensor (21) is communicatively connected to the input end of the signal processing unit (22).

3. The SF6 gas online monitoring device for a substation according to claim 2, characterized in that: A warning light (23) is fixedly installed at the right position of the bottom front side of the monitoring host (1), and an alarm (24) is fixedly installed at the left position of the bottom front side of the monitoring host (1). The input ends of the warning light (23) and the alarm (24) are electrically connected to the output end of the signal processing unit (22).

4. The SF6 gas online monitoring device for a substation according to claim 3, characterized in that: A fixed cylinder (25) penetrating the left side of the monitoring host (1) is fixedly installed in the middle of the left side of the monitoring host (1), a fan is fixedly installed on the left side of the inner wall of the fixed cylinder (25), a delivery pipe (26) penetrating the bottom of the monitoring host (1) is fixedly installed at the left end of the fixed cylinder (25), the fixed cylinder (25) is connected to the delivery pipe (26), and an electric valve (27) is fixedly installed at the bottom of the inner cavity of the delivery pipe (26).

5. The SF6 gas online monitoring device for a substation according to claim 1, characterized in that: The heat dissipation and ventilation assembly (3) comprises a mounting frame (32), a ventilation slot (31) is provided on the top right side of the monitoring host (1), the left side of the mounting frame (32) is fixedly mounted on the top right side of the monitoring host (1), a movable slot is provided on the upper end of the mounting frame (32), a filter screen (33) is slidably connected to the inner wall of the movable slot, and a top plate (34) is fixedly mounted on the upper end of the filter screen (33).

6. The SF6 gas online monitoring device for a substation according to claim 5, characterized in that: The front and rear portions of the upper end of the top plate (34) are both threadedly connected to adjustment bolts (35), and the front and rear positions of the top right side of the monitoring host (1) are both provided with threaded holes (36), and the left portions of the outer walls of the two adjustment bolts (35) are threadedly connected to the inner walls of the two threaded holes (36).

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