High-sealing SF6 gas density relay based on Internet

Abstract

The invention relates to the technical field of relays, and relates to an Internet-based high-sealing SF6 gas density relay, which comprises a fourth shell playing a sealing role, a second disc hermetically mounted in the fourth shell, an arc-shaped push rod rotationally mounted on the upper surface of the second disc, and a pointer mechanism, the temperature compensating plate is mounted on the upper surface of the second disc; the C-shaped pipe is mounted on the lower surface of the second disc; the air storage tank and the air suction tank are fixedly mounted on the upper surface of the fourth shell; an air suction pipe of the air suction tank penetrates through the fourth shell and the second disc, the air suction pipe communicates with a space formed by the lower surface of the second disc and the fourth shell, and a port of the air suction pipe is close to the bottom of the second gear; helium is located on the upper layer and further presses SF6 into an air suction pipe of the air suction tank to enter the air suction tank, a one-way inlet valve is arranged at the inlet end of the air suction pipe, it is guaranteed that the gas can only enter the air suction tank but not exit the air suction tank, then SF6 is discharged into the air suction tank, and the collecting effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of relays, and in particular to an Internet-based high-sealing SF6 gas density relay. Background Art

[0002] Sulfur hexafluoride is an asphyxiant and is highly toxic, but it is often used as an ultra-high voltage insulating material for electrical appliances. Therefore, SF6 gas density relays are often installed on some large circuit breakers to detect the concentration of sulfur hexafluoride, thereby preventing personnel poisoning due to excessive sulfur hexafluoride leakage; however, existing SF6 gas density relays have the following disadvantages: 1. The existing sulfur hexafluoride gas density relay is only used to detect the concentration of sulfur hexafluoride in electrical components such as circuit breakers, but lacks the ability to detect its own leakage. In addition, once leakage occurs in the key parts (such as C-type tubes, joints, and the connection between C-type tubes and joints), the possibility of sulfur hexafluoride leakage will be very high. Therefore, there is a risk of leakage of the sulfur hexafluoride gas density relay itself; 2. When the existing sulfur hexafluoride gas density relay needs to be replaced after a leak occurs, since there is still a small amount of sulfur hexafluoride gas inside the relay, it is easy to dissipate into the air, causing poisoning to people, and it is also impossible to recycle.

[0003] In view of the above problems, the present invention proposes a relay which can absorb sulfur hexafluoride gas and has high sealing performance. Summary of the invention

[0004] An Internet-based high-sealing SF6 gas density relay, characterized in that it includes a fourth housing that plays a sealing role, a second disc sealed and installed in the fourth housing, an arc-shaped push rod and a pointer mechanism rotatably installed on the upper surface of the second disc, a temperature compensation sheet installed on the upper surface of the second disc, and a C-shaped tube installed on the lower surface of the second disc; a gas storage tank and an air suction tank fixedly installed on the upper surface of the fourth housing; The second disc divides the fourth shell into two layers; the pointer mechanism is transmission-connected with the arc-shaped push rod, and the arc-shaped push rod is connected to one end of the temperature compensation sheet through the second connecting rod; one end of the C-shaped tube is connected to the connector, and the other end is provided with a push rod, the push rod passes through the second disc and contacts with one end of the temperature compensation sheet away from the second connecting rod, and the push rod is sealingly and slidingly connected with the second disc, a gas sensor is provided on the lower surface of the second disc, and an electromagnetic valve is provided on the upper surface of the second disc, and the electromagnetic valve passes through the second disc and is installed in the connector; The exhaust pipe of the air intake tank passes through the fourth shell and the second disc, the exhaust pipe is connected to the space formed by the lower surface of the second disc and the fourth shell, and the port of the exhaust pipe is close to the bottom of the fourth shell; the exhaust pipe of the air storage tank passes through the fourth shell and is connected to the hole on the upper surface of the second disc.

[0005] Furthermore, it comprises an exhaust pipe arranged at one end of the air intake tank away from the air extraction pipe, a one-way valve is arranged inside the exhaust pipe; a first circular plate fixedly mounted on the upper surface of the air intake tank; The first circular plate is fixedly connected to the gas storage tank, and a pressure rod is sealingly and slidably installed at one end of the gas storage tank away from the gas outlet pipe, and the pressure rod is connected to the driving structure through a connecting plate.

[0006] Furthermore, the Internet-based high-sealing SF6 gas density relay further includes a third housing and a fifth housing installed at both ends of the fourth housing, and a chassis fixedly connected to the fifth housing away from one end of the fourth housing; A dial is arranged at one end of the third shell away from the fourth shell; the third shell is located on the upper surface of the fourth shell and the third shell wraps the gas storage tank, the air suction tank and the first circular plate.

[0007] Further, the driving structure includes a second lead screw rotatably mounted at the center of the chassis; The second lead screw is rotatably installed in the fifth housing; a first gear is arranged on the outer surface of the second lead screw, the drive motor is fixedly connected to the chassis, a third gear is arranged on the motor shaft of the drive motor, and the third gear is meshed with the first gear; a support frame is threadedly installed on the second lead screw, a support ring is arranged on the upper surface of the support frame, and the support ring is connected to the connecting plate through a transmission structure.

[0008] Furthermore, the transmission structure includes a first rack connected to the connecting plate, a second rack connected to the supporting ring, and a second gear rotatably mounted on the outside of the second shell, the second rack and the first rack are respectively meshed with the second gear and are located on opposite sides of the second gear.

[0009] Furthermore, a telescopic rod is provided on the upper surface of the support ring, the other end of the telescopic rod is fixedly connected to the top plate, and the top plate is slidably installed in the groove on the outer surface of the second shell and contacts the inner airbag; a first spring is provided on the outer side of the telescopic rod, one end of the first spring is fixedly connected to the top plate, and the other end is fixedly connected to the support ring.

[0010] Furthermore, a second shell is installed on the outer sides of the third shell, the fourth shell and the fifth shell, and an inner airbag is installed on the outer side of the second shell.

[0011] Furthermore, a first shell is disposed outside the second shell, an outer airbag and a circular outer shell are disposed outside the first shell, and the outer airbag is communicated with the inner airbag through a pipeline passing through the first shell.

[0012] Furthermore, a plurality of linear arrays of force-reducing rotating wheels are installed on the outside of the outer airbag; and a plurality of circular arrays of anti-vibration rods are arranged on the upper surface of the outer airbag.

[0013] Furthermore, a swivel is rotatably installed on the outer side of the annular shell, and the swivel is located at the end of the connecting head away from the dial, a circular bevel gear is arranged in the swivel, two semi-circular shells are symmetrically slidably installed in the groove of the annular shell about the connecting head, the first lead screw is rotatably installed in the circular hole on the outer side of the annular shell, and is located below the connecting head; a slider is threadedly installed on the first lead screw, and the slider is connected to the semi-circular shell through a connecting rod.

[0014] Since the present invention adopts the above technical solution, the present invention has the following advantages: 1. The present invention sets a solenoid valve. When the gas sensor detects SF6 leakage, the solenoid valve is controlled to disconnect the connector. At the same time, the inert gas such as helium stored in the gas storage tank is released. The density of helium is smaller than that of SF6. When the helium is sprayed out, the helium is in the upper layer and the SF6 is pressed into the suction pipe of the suction tank and enters the suction tank. A one-way inlet valve is set at the inlet end of the suction pipe to ensure that the gas can only enter but not exit, and then the SF6 is discharged into the suction tank to collect the gas.

[0015] 2. The third shell of the present invention is located on the upper surface of the fourth shell and the third shell 25 wraps the gas storage tank, the air intake tank and the first circular plate; the third shell, the fourth shell and the fifth shell all play a protective role, and the third shell and the fourth shell play a sealing role to prevent SF6 leakage.

[0016] 3. The present invention remotely controls the driving motor through the Internet, thereby driving the third gear, the first gear, and the second lead screw to rotate, thereby driving the support frame to move upward, thereby driving the transmission mechanism to work. Or when SF6 gas leaks, it is detected by the gas sensor, and the gas sensor transmits a signal to the main controller, which controls the driving motor to work and then drives the transmission mechanism to work. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall assembly structure and a partial enlargement of the present invention.

[0018] Figure 2 It is a front view schematic diagram of the overall structure of the present invention.

[0019] Figure 3 for Figure 2 Schematic cross-section diagram and enlarged diagram of local structure.

[0020] Figure 4 It is a front view schematic diagram of the force-reducing rotating wheel, the outer air bag and the rotating ring of the present invention.

[0021] Figure 5 For the present invention Figure 2 Schematic cross-section diagram and enlarged diagram of local structure.

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the force-reducing rotating wheel, the outer airbag and the rotating ring of the present invention and an enlarged diagram of the local structure.

[0023] Figure 7 It is a schematic diagram of the installation position of the transmission structure of the present invention.

[0024] Figure 8 It is a schematic diagram of the positions of the second shell, the inner airbag, the support frame and the top plate of the present invention and an enlarged diagram of the local structure.

[0025] Fig. 9 It is a schematic diagram of the positions of the third shell, the fourth shell and the fifth shell of the present invention.

[0026] Fig.10 It is a schematic diagram of the position of the fourth housing and the driving structure of the present invention and an enlarged diagram of the local structure.

[0027] Fig.11 It is a schematic diagram of the positions of the gas storage tank, the air suction tank, the first circular plate and the connecting head of the present invention.

[0028] Fig.12 It is a schematic diagram of the positions of the gas storage tank, the air suction tank, the first circular plate and the connecting head at another angle and an enlarged diagram of the local structure of the present invention.

[0029] Fig.13 It is a schematic diagram of the positions of the gas storage tank, the air suction tank, the first circular plate and the connecting head at the second angle and an enlarged diagram of the local structure of the present invention.

[0030] Fig.14 It is a schematic diagram of the positions of the gas storage tank, pointer mechanism, and connector of the present invention and an enlarged diagram of the local structure.

[0031] Fig.15 It is a control schematic diagram of the main controller of the present invention.

[0032] Figure Number: 10. Anti-vibration rod; 20. force reducing wheel; 21. outer air bag; 22. first shell; 23. second shell; 24. inner air bag; 25. third shell; 26. fourth shell; 27. fifth shell; 28. annular shell; 30. Connector; 31. Solenoid valve; 32. Gas sensor; 40. Sealing structure; 41. Semicircular ring housing; 42. Semicircular rubber ring; 43. First bevel gear; 44. Circular bevel gear; 45. First lead screw; 46. Connecting rod; 47. Sliding block; 48. Rotating ring; 51. second lead screw; 52. support frame; 53. support ring; 54. top plate; 55. telescopic rod; 56. first spring; 57. first gear; 58. third gear; 59. drive motor; 61. first rack; 62. second gear; 63. second rack; 64. connecting plate; 65. gas storage tank; 651. air outlet pipe; 652. pressure rod; 66. air suction tank; 661. exhaust pipe; 662. air extraction pipe; 67. first circular plate; 71. second disc; 72. arc-shaped push rod; 73. pointer mechanism; 731. fourth gear; 732. pointer; 74. second connecting rod; 75. temperature compensation sheet; 76. C-shaped tube; 77. push rod; 78. dial; 80. Circuit connector; 90. chassis; 91. lever; 92. second spring. DETAILED DESCRIPTION

[0033] The technical solution of the present invention is further specifically described below by way of embodiments and in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0034] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "up", "down", "in", "out", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. Example:

[0035] Figures 1 to 14 The drawing is carried out from the outside to the inside.

[0036] refer to Fig.10 and Fig.11, an Internet-based high-sealing SF6 gas density relay, comprising a fourth housing 26 for sealing, a second disc 71 sealed and installed in the fourth housing 26, an arc-shaped push rod 72 and a pointer mechanism 73 rotatably installed on the upper surface of the second disc 71, a temperature compensation sheet 75 installed on the upper surface of the second disc 71, and a C-shaped tube 76 installed on the lower surface of the second disc 71; a gas storage tank 65 and an air suction tank 66 fixedly installed on the upper surface of the fourth housing 26; The second disc 71 divides the fourth housing 26 into two layers; the pointer mechanism 73 is transmission-linked with the arc-shaped push rod 72, and the arc-shaped push rod 72 is connected to one end of the temperature compensation sheet 75 through the second connecting rod 74; one end of the C-shaped tube 76 is connected to the connector 30, and the other end is provided with a push rod 77, the push rod 77 passes through the second disc 71 and contacts with the end of the temperature compensation sheet 75 away from the scale plate 78, and the push rod 77 is sealingly and slidably connected with the second disc 71, a gas sensor 32 is provided on the lower surface of the second disc 71, and a solenoid valve 31 is provided on the upper surface of the second disc 71, and the solenoid valve 31 passes through the second disc 71 and is installed in the connector 30; the solenoid valve 31 is electrically connected to the gas sensor 32, and when the gas sensor 32 detects SF6 leakage, the solenoid valve 31 is controlled to disconnect the connector 30; In particular, SF6 gas is connected to the connector 30 through a pipeline, and the C-type tube 76 is an elastic tube. The temperature compensation sheet 75 is used to correct the changing pressure and temperature (the temperature compensation sheet 75 is supported by two metals, such as silver and copper, and the temperature correction is performed by using the different temperature expansion and contraction rates of different metals). Under the pressure of the measured medium SF6 gas, due to the effect of the temperature compensation sheet 75, the density value changes, and the pressure value also changes accordingly, forcing the end of the C-type tube 76 to produce a corresponding elastic deformation-displacement, which is transmitted to the fourth gear 731 by means of the temperature compensation sheet 75 and the second connecting rod 74. The fourth gear 731 is meshed with the teeth of the arc-shaped push rod 72, and the fourth gear 731 is transmitted to the pointer 732, so that the measured SF6 gas density value is indicated on the dial 78. In this way, the density relay can display the SF6 density value. The pointer 732 and the fourth gear 731 are connected by the pointer mechanism 73, and the pointer mechanism 73 passes through the fourth housing 26, the first circular plate 67, the third housing 25 and the dial 78.

[0037] Specifically, the exhaust pipe 662 of the air intake tank 66 passes through the fourth shell 26 and the second disc 71, and the exhaust pipe 662 is connected to the space formed by the lower surface of the second disc 71 and the fourth shell 26, and the port of the exhaust pipe 662 is close to the bottom of the fourth shell 26; the outlet pipe 651 of the gas storage tank 65 passes through the fourth shell 26 and is connected to the hole on the upper surface of the second disc 71. A one-way outlet valve is arranged at the outlet end of the outlet pipe 651. Inert gas such as helium is stored in the gas storage tank 65. The density of helium is smaller than that of SF6. When the helium is ejected, the helium is in the upper layer and then presses the SF6 into the exhaust pipe 662 of the air intake tank 66 and enters the air intake tank 66. A one-way inlet valve is arranged at the inlet end of the exhaust pipe 662 to ensure that the gas can only enter but not exit, and then discharge the SF6 into the air intake tank 66 to collect it.

[0038] refer to Fig.11 , including an exhaust pipe 661 arranged at one end of the air suction tank 66 away from the exhaust pipe 662, a one-way valve is arranged inside the exhaust pipe 661, the one-way valve can only make the gas in the air suction tank 66 go out, but not go in, the exhaust pipe 661 passes through the first circular plate 67, the third shell 25 and the dial 78, and is used for workers to open the exhaust pipe 661 in advance to discharge the gas during maintenance; the first circular plate 67 fixedly mounted on the upper surface of the air suction tank 66; Furthermore, the first circular plate 67 is fixedly connected to the gas storage tank 65, and a pressure rod 652 is sealed and slidably installed at one end of the gas storage tank 65 away from the gas outlet pipe 651, and the pressure rod 652 is connected to the driving structure through the connecting plate 64. The driving structure drives the pressure rod 652 to press the inert gas in the gas storage tank 65 out of the gas outlet pipe 651 and into the space between the second circular plate 71 and the bottom surface of the fourth shell 26.

[0039] refer to Fig. 9 , further comprising a third housing 25 and a fifth housing 27 mounted at both ends of the fourth housing 26, and a chassis 90 fixedly connected to one end of the fifth housing 27 away from the fourth housing 26; the support frame 52 passes through the fifth housing 27 and is slidably mounted in the groove of the fifth housing 27, and the fifth housing 27 plays a role of limiting. A clamping rod 91 is slidably mounted in the slide groove of the chassis 90, and a second spring 92 is arranged in the slide groove of the chassis 90, one end of the second spring 92 is connected to the chassis 90, and the other end is connected to the clamping rod 91, and the second spring 92 plays a role of resetting.

[0040] refer to Fig. 9 The third housing 25 is provided with a dial plate 78 at one end away from the fourth housing 26; the third housing 25 is located on the upper surface of the fourth housing 26 and the third housing 25 wraps the gas storage tank 65, the air intake tank 66 and the first circular plate 67. The third housing 25, the fourth housing 26 and the fifth housing 27 all play a protective role, and the third housing 25 and the fourth housing 26 play a sealing role to prevent SF6 gas leakage.

[0041] refer to Fig.10 The driving structure includes a second lead screw 51 rotatably mounted at the center of the chassis 90; the second lead screw 51 is rotatably mounted in the fifth housing 27; a first gear 57 is provided on the outer surface of the second lead screw 51, a drive motor 59 is fixedly connected to the chassis 90, a third gear 58 is provided on the motor shaft of the drive motor 59, and the third gear 58 and the first gear 57 are meshed with each other; a support frame 52 is threadedly mounted on the second lead screw 51, and a support ring 53 is provided on the upper surface of the support frame 52 (refer to Figure 8 ), the support ring 53 is connected to the connecting plate 64 through the transmission structure. The drive motor 59 is remotely controlled through the Internet to work, thereby driving the third gear 58, the first gear 57 and the second lead screw 51 to rotate, thereby driving the support frame 52 to move upward, thereby driving the transmission mechanism to work. Or when SF6 gas leaks, it is detected by the gas sensor 32, and the gas sensor 32 transmits a signal to the main controller, which controls the drive motor 59 to work and drives the transmission mechanism to work.

[0042] refer to Figure 7 The transmission structure includes a first rack 61 connected to the connecting plate 64, a second rack 63 connected to the supporting ring 53, and a second gear 62 rotatably mounted on the outer side of the second housing 23. The second rack 63 and the first rack 61 are respectively meshed with the second gear 62 and are located on opposite sides of the second gear 62. The supporting ring 53 moves upward to drive the second rack 63 upward and then drives the second gear 62 to rotate. The second gear 62 rotates to drive the first rack 61 downward to drive the connecting plate 64 downward to drive the pressure rod 652 downward to discharge the inert gas in the gas storage tank 65.

[0043] refer to Figure 8 , a telescopic rod 55 is arranged on the upper surface of the support ring 53, and the other end of the telescopic rod 55 is fixedly connected to the top plate 54, and the top plate 54 is slidably installed in the groove on the outer surface of the second shell 23 and contacts the inner airbag 24; a first spring 56 is arranged on the outer side of the telescopic rod 55, and one end of the first spring 56 is fixedly connected to the top plate 54, and the other end is fixedly connected to the support ring 53. The top plate 54 is driven to move upward by the support ring 53, and then the inner airbag 24 is pushed, so that the gas in the inner airbag 24 is discharged into the outer airbag 21, thereby improving the anti-collision and anti-collision level of the device. (Since the support ring 53 moves upward when SF6 leaks, the gas in the inner airbag 24 is squeezed into the outer airbag 21 by pushing the inner airbag 24 at this time, thereby effectively alleviating the external collision. Thus improving the anti-collision and anti-collision level of the device).

[0044] refer to Figure 7The second housing 23 is installed outside the third housing 25, the fourth housing 26 and the fifth housing 27, and the inner airbag 24 is installed outside the second housing 23. The lower end surface of the fifth housing 27 is fixedly connected to the chassis 90.

[0045] refer to Figure 8 The first shell 22 is arranged outside the second shell 23, and the outer airbag 21 and the annular shell 28 are arranged outside the first shell 22. The outer airbag 21 is connected to the inner airbag 24 through a pipeline passing through the first shell 22. The top plate 54 is driven upward by the support ring 53 to move upward, and then the inner airbag 24 is pushed, so that the gas in the inner airbag 24 is discharged into the outer airbag 21, thereby improving the anti-collision and anti-collision level of the device. (Since the support ring 53 moves upward when SF6 leaks, the gas in the inner airbag 24 is squeezed into the outer airbag 21 by pushing the inner airbag 24 at this time, thereby effectively alleviating external collisions. Thus, the anti-collision and anti-collision level of the device is improved).

[0046] refer to Figure 1 , Figure 2 and Figure 3 A plurality of linear arrays of force reduction wheels 20 are installed outside the outer airbag 21; a plurality of circular arrays of anti-vibration rods 10 are arranged on the upper surface of the outer airbag 21. The force reduction wheels 20 are used to prevent the side collision of the present invention, and the anti-vibration rods 10 are used to prevent the top collision of the present invention, thereby improving the safety performance of the present invention.

[0047] Further, refer to Figure 5 and Figure 6 The sealing structure 40 includes a semicircular ring shell 41, a semicircular rubber ring 42, a first bevel gear 43, a circular bevel gear 44, a first lead screw 45, a connecting rod 46, a slider 47 and a swivel 48; a swivel 48 is rotatably installed on the outer side of the circular ring shell 28, and the swivel 48 is located at the end of the connector 30 away from the dial 78, and a circular bevel gear 44 is arranged in the swivel 48, and the two semicircular ring shells 41 are symmetrically slidably installed in the groove of the circular ring shell 28 about the connector 30, and the first lead screw 45 is rotatably installed in the circular hole on the outer side of the circular ring shell 28 and is located below the connector 30; a slider 47 is threadedly installed on the first lead screw 45, and the slider 47 is connected to the semicircular ring shell 41 through a connecting rod 46, and a semicircular rubber ring 42 is arranged on the inner side of the semicircular ring shell 41, and the semicircular rubber ring 42 is used to fix the pipeline.

[0048] The connector 30 and the circuit connector 80 pass through the fourth shell 26 , the second shell 23 and the annular shell 28 from the inside to the outside in sequence. The circuit connector 80 is used to connect the circuit and the Internet control module. The SF6 gas pipeline is connected to the connector 30 .

[0049] This embodiment also includes a control system, such as Fig.15As shown, the control system includes a main controller, an information transmission module, a storage module and a power module, and the main controller is electrically connected to the information transmission module, the storage module, the power module, the gas sensor 32, the solenoid valve 31 and the drive motor 59; the main controller is used to control the operation of the entire relay; by setting the operating value of the gas sensor 32, and automatically controlling the operation after determining the set value; the information transmission module is used for information transmission between the main controller and the drive motor 59; the power module is used to provide a stable power supply to the control end; the storage module is used to store the operating information data of the entire silencer.

[0050] Working principle: Before use, first fill the gas storage tank 65 with inert gas (such as helium), and make the connecting plate 64 at the highest position, so that the inside of the gas suction tank 66 is in a hollow or negative pressure state; connect the SF6 gas pipeline with the connector 30, and press the two clamping rods 91 into the clamping grooves of the disengagement swivel 48 (see Figure 3 ), and then manually rotate the swivel 48, which drives the bevel gear 44 to rotate (see Figure 5 or Figure 6 ), the annular bevel gear 44 drives the first bevel gear 43 and then drives the first lead screw 45 to rotate, and the first lead screw 45 drives the slider 47 to move toward the first bevel gear 43, and the slider 47 drives the two connecting rods 46 and then drives the two semi-circular ring shells 41 to move toward the connecting head 30, clamping the pipe installed on the connecting head 30, and then loosening the clamping rod 91 so that the clamping rod 91 is clamped into the clamping groove of the swivel 48, and the swivel 48 is fixed.

[0051] When working, under the pressure of the measured medium SF6 gas, due to the effect of the temperature compensation sheet 75, the change of its density value and the corresponding change of pressure value force the end of the C-tube 76 to produce corresponding elastic deformation - displacement, which is transmitted to the fourth gear 731 by means of the temperature compensation sheet 75 and the second connecting rod 74, and the fourth gear 731 transmits to the pointer 732, so that the measured SF6 gas density value is indicated on the dial 78. In this way, the density relay can display the SF6 density value.

[0052] The force reducing wheel 20 of the present invention is used to prevent the present invention from side collision, and the anti-vibration rod 10 is used to prevent the present invention from top collision, thereby improving the safety performance of the present invention (see Figure 1 and Figure 2 ).

[0053] When SF6 gas leaks, that is, the C-tube 76 leaks, the SF6 gas enters the space between the second disk 71 and the bottom of the fourth shell 26 (this space is a closed space). When the concentration reaches a certain level, it is detected by the gas sensor 32 (see Fig.13 and Fig.14) detects, the gas sensor 32 transmits the signal to the main controller, and the main controller controls the drive motor 59 to work and controls the solenoid valve 31 to disconnect the connector 30, thereby driving the third gear 58, the first gear 57 and the second lead screw 51 to rotate, thereby driving the support frame 52 and the support ring 53 to move upward (see Figure 8 ), The support ring 53 moves upward to drive the second rack 63 upward, thereby driving the second gear 62 to rotate. The second gear 62 rotates to drive the first rack 61 downward to drive the connecting plate 64 downward to drive the pressure rod 652 downward to discharge the inert gas in the gas storage tank 65 (see Fig.11 ), a one-way outlet valve is provided at the outlet end of the outlet pipe 651. The gas storage tank 65 stores inert gas such as helium. The density of helium is much smaller than that of SF6. When the helium is sprayed out, the helium is in the upper layer and then presses the SF6 into the exhaust pipe 661 of the air intake tank 66 and enters the air intake tank 66. A one-way inlet valve is provided at the inlet end of the exhaust pipe 661 to ensure that the gas can only enter but not exit, and then the SF6 is discharged into the air intake tank 66 to play a collection role.

[0054] At the same time, the support ring 53 moves upward to drive the top plate 54 upward, thereby pushing the inner airbag 24, so that the gas in the inner airbag 24 is discharged into the outer airbag 21, thereby improving the anti-collision and anti-collision level of the device.

[0055] The device also sends the information through the circuit connector 80 to inform the maintenance worker, who then performs maintenance.

Claims

1. An Internet-based high-sealing SF6 gas density relay, characterized in that: It includes a fourth shell for sealing, a second disc sealed in the fourth shell, an arc-shaped push rod and a pointer mechanism rotatably mounted on the upper surface of the second disc, a temperature compensation sheet mounted on the upper surface of the second disc, and a C-shaped tube mounted on the lower surface of the second disc; an air storage tank and an air suction tank fixedly mounted on the upper surface of the fourth shell; The second disc divides the fourth shell into two layers; the pointer mechanism is transmission-connected with the arc-shaped push rod, and the arc-shaped push rod is connected to one end of the temperature compensation sheet through the second connecting rod; one end of the C-shaped tube is connected to the connector, and the other end is provided with a push rod, the push rod passes through the second disc and contacts with one end of the temperature compensation sheet away from the second connecting rod, and the push rod is sealingly and slidingly connected with the second disc, a gas sensor is provided on the lower surface of the second disc, and an electromagnetic valve is provided on the upper surface of the second disc, and the electromagnetic valve passes through the second disc and is installed in the connector; The exhaust pipe of the air intake tank passes through the fourth shell and the second disc, the exhaust pipe is connected to the space formed by the lower surface of the second disc and the fourth shell, and the port of the exhaust pipe is close to the bottom of the fourth shell; the exhaust pipe of the air storage tank passes through the fourth shell and is connected to the hole on the upper surface of the second disc.

2. The Internet-based high-sealing SF6 gas density relay according to claim 1, characterized in that: It includes an exhaust pipe arranged at one end of the air intake tank away from the air extraction pipe, a one-way valve is arranged inside the exhaust pipe; a first circular plate fixedly installed on the upper surface of the air intake tank; The first circular plate is fixedly connected to the gas storage tank, and a pressure rod is sealingly and slidably installed at one end of the gas storage tank away from the gas outlet pipe, and the pressure rod is connected to the driving structure through a connecting plate.

3. The Internet-based high-sealing SF6 gas density relay according to claim 2, characterized in that: The Internet-based high-sealing SF6 gas density relay also includes a third housing and a fifth housing installed at both ends of the fourth housing, and a chassis fixedly connected to the fifth housing away from one end of the fourth housing; A dial is arranged at one end of the third shell away from the fourth shell; the third shell is located on the upper surface of the fourth shell and the third shell wraps the gas storage tank, the air suction tank and the first circular plate.

4. The Internet-based high-sealing SF6 gas density relay according to claim 3, characterized in that: The driving structure includes a second lead screw rotatably mounted at the center of the chassis; The second lead screw is rotatably installed in the fifth housing; a first gear is arranged on the outer surface of the second lead screw, the drive motor is fixedly connected to the chassis, a third gear is arranged on the motor shaft of the drive motor, and the third gear is meshed with the first gear; a support frame is threadedly installed on the second lead screw, a support ring is arranged on the upper surface of the support frame, and the support ring is connected to the connecting plate through a transmission structure.

5. The Internet-based high-sealing SF6 gas density relay according to claim 4, characterized in that: The transmission structure includes a first rack connected to the connecting plate, a second rack connected to the supporting ring, and a second gear rotatably mounted on the outside of the second shell, the second rack and the first rack are respectively meshed with the second gear and are located on opposite sides of the second gear.

6. The Internet-based high-sealing SF6 gas density relay according to claim 4, characterized in that: A telescopic rod is provided on the upper surface of the support ring, and the other end of the telescopic rod is fixedly connected to the top plate. The top plate is slidably installed in the groove on the outer surface of the second shell and contacts the inner airbag; a first spring is provided on the outer side of the telescopic rod, and one end of the first spring is fixedly connected to the top plate, and the other end is fixedly connected to the support ring.

7. The Internet-based high-sealing SF6 gas density relay according to claim 3, characterized in that: A second shell is installed outside the third shell, the fourth shell and the fifth shell, and an inner airbag is installed outside the second shell.

8. The Internet-based high-sealing SF6 gas density relay according to claim 7, characterized in that: A first shell is arranged outside the second shell, an outer air bag and a circular outer shell are arranged outside the first shell, and the outer air bag is communicated with the inner air bag through a pipeline penetrating the first shell.

9. The Internet-based high-sealing SF6 gas density relay according to claim 8, characterized in that: A plurality of linear array force-reducing rotating wheels are installed on the outer side of the outer airbag; a plurality of circular array anti-vibration rods are arranged on the upper surface of the outer airbag.

10. The Internet-based high-sealing SF6 gas density relay according to claim 8, characterized in that: A swivel is rotatably mounted on the outer side of the annular shell, and the swivel is located at the end of the connector away from the dial. A bevel gear is arranged in the swivel. Two semi-annular shells are symmetrically slidably mounted in the groove of the annular shell about the connector. The first lead screw is rotatably mounted in the circular hole on the outer side of the annular shell and is located below the connector. A slider is threadedly mounted on the first lead screw, and the slider is connected to the semi-annular shell through a connecting rod.

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