CN211742245U

CN211742245U - Sulfur hexafluoride gas leakage alarm system

Info

Publication number: CN211742245U
Application number: CN202020442074.1U
Authority: CN
Inventors: 张之伟; 葛贤钢; 张凯; 王庆庆
Original assignee: Nanjing Dingzhu Electric Power Equipment Engineering Co ltd
Current assignee: Nanjing Dingzhu Electric Power Equipment Engineering Co ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2020-10-23
Anticipated expiration: 2030-03-30

Abstract

The utility model relates to a sulfur hexafluoride gas leakage alarm system, relate to electric power safety's technical field, it includes the cabinet body, the cabinet body is from outer to interior outer cabinet that divide into, leak protection cabinet and inner frame body, outer cabinet bottom still is provided with down the cabinet, inner frame body is used for electrical components and parts installation fixed, leak protection cabinet is transparent visible, be provided with the pressure release pipeline between outer cabinet and the leak protection cabinet, the upper and lower both sides at the leak protection cabinet are established separately to the pressure release pipeline, the pressure release pipeline and the lower cabinet intercommunication that are located the bottom, the pressure release pipeline and the external intercommunication that are located the top, all be provided with the air throttle in the pressure release pipeline of leak protection cabinet both sides, still be provided with the subassembly of taking a breath in the lower cabinet, be provided with gaseous detector in the leak protection cabinet. The utility model discloses have and detect the warning when SF6 is gaseous when appearing leaking to make SF6 be difficult for causing the pollution to the environment and cause the effect of harm to the human body.

Description

Sulfur hexafluoride gas leakage alarm system

Technical Field

The utility model belongs to the technical field of electric power safety's technique and specifically relates to a sulfur hexafluoride gas leakage alarm system who uses in SF6 looped netowrk cabinet is related to.

Background

Sulfur hexafluoride electrical equipment is widely applied at home and abroad, particularly in an electric power system, the application amount reaches 95% of the total production amount, the sulfur hexafluoride electrical equipment is widely applied to ring main units, the ring main units are widely applied to distribution stations and box-type substations in urban residential districts, high-rise buildings and the like, and load switches and fuses are adopted as core parts of the sulfur hexafluoride electrical equipment.

Because SF6 is gaseous to rush in load switch and fuse through SF6 gas tube among the current SF6 looped netowrk cabinet with gaseous mode, there is the gaseous condition of leaking in SF6 gas tube and load switch and fuse junction, can cause the holistic performance reduction of looped netowrk cabinet when SF6 appears leaking, and can cause the box internal pressure to increase when SF6 is gaseous to leak, thereby cause the damage to the box, make the box appear breaking, cause the gaseous leakage of SF6, can cause the pollution to the environment after SF6 is gaseous to leak, and SF6 is gaseous can cause harm to the human body.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art existence, one of the purposes of the utility model is to provide a sulfur hexafluoride gas leakage alarm system has and detects the warning when SF6 gas appears leaking to make SF6 be difficult for causing the pollution and causing the effect of harm to the human body to the environment.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a sulfur hexafluoride gas leakage alarm system comprises a cabinet body which is divided into an outer cabinet, a leakage-proof cabinet and an inner frame body from outside to inside, the bottom of the outer cabinet is also provided with a lower cabinet, the inner frame body is used for installing and fixing electrical components, the leakage-proof cabinet is transparent and visible, a pressure relief pipeline is arranged between the outer cabinet and the leakage-proof cabinet, the pressure relief pipeline is respectively arranged at the upper side and the lower side of the leakage-proof cabinet, the pressure relief pipeline positioned at the bottom is communicated with the lower cabinet, the pressure relief pipeline positioned at the top is communicated with the outside, the pressure relief pipelines at two sides of the leakage-proof cabinet are both provided with air throttle valves, the lower cabinet is also provided with an air exchange assembly, a gas detector is arranged in the leakage-proof cabinet, a buzzer and a signal lamp are arranged on the outer surface of the outer cabinet, the outer wall of the front side of the leakage-proof cabinet is provided with a control switch electrically connected with a buzzer, and the signal lamp and the buzzer are both electrically connected with the gas detector.

Through adopting above-mentioned technical scheme, electrical components and parts are installed fixedly with interior framework, reduce under the effect of leak protection cabinet and spill over to external possibility when SF6 gas appears leaking, and under the effect of pressure release pipeline and subassembly of taking a breath, realize collecting the gas of SF6 to leaking and take a breath, add the inside pressure of cabinet down, reduce the possibility that the internal pressure increase caused cabinet body damage when leaking gas, whether the realization leaks gas to the internal portion of cabinet body gas and detects under the effect of gas detector, and carry out buzzing warning after detecting to leak, can control bee calling organ and stop buzzing warning when operating personnel handles leaking gas under control switch's effect, can still have SF6 gas to make the judgement under the effect of signal lamp to the cabinet body.

The present invention may be further configured in a preferred embodiment as: the air exchange assembly comprises a first air exhaust fan, an air exhaust pipe and a gas collection air bag, wherein the first air exhaust fan is located in a pressure relief pipeline communicated with the lower cabinet and located on one side, deviating from the inner frame body, of the throttle valve, one side, deviating from the pressure relief pipeline, of the first air exhaust fan is connected with one end of the air exhaust pipe, the other end of the air exhaust pipe is connected with the gas collection air bag, and the gas collection air bag is located in the lower cabinet.

Through adopting above-mentioned technical scheme, under the effect of first extraction fan, realize bleeding the gaseous SF6 that leaks in the box to take out the gaseous SF6 that spills out and collect in the gas collection gasbag, thereby reduce the possibility that the gaseous appearance of SF6 that leaks to external environment leaks.

The present invention may be further configured in a preferred embodiment as: and a buffer cushion is embedded in the inner wall of the lower cabinet.

Through adopting above-mentioned technical scheme, because can expand when the gas collection gasbag gathers gas, under the effect of blotter, reduce and cause the possibility of extrusion deformation to lower cabinet after the gas collection gasbag inflation.

The present invention may be further configured in a preferred embodiment as: the side of the gas collection air bag, which deviates from the side connected with the exhaust pipe, is provided with an exhaust nozzle, the exhaust nozzle penetrates out of the lower cabinet, one side of the exhaust nozzle, which penetrates out of the lower cabinet, is in threaded connection with a sealing cover, and a sealing ring is embedded in one side of the sealing cover, which faces the exhaust nozzle.

Through adopting above-mentioned technical scheme, under the effect of exhaust nozzle, realize that operating personnel can deflate the gas collection gasbag for after handling SF6 gas leakage, can take out the SF6 gas in the gas collection gasbag and separate, make the gas collection gasbag can used repeatedly, and under the effect of sealed lid, make exhaust nozzle department be difficult for appearing gaseous outer the hourglass.

The present invention may be further configured in a preferred embodiment as: and a second air exhaust fan is also arranged in the pressure relief pipeline and communicated with the outside, and the second air exhaust fan is positioned on one side of the throttle valve facing the inner frame body.

Through adopting above-mentioned technical scheme, under the effect of second extraction fan, the throttle valve of the pressure release pipeline department with external intercommunication that can be convenient fast to make the subassembly of taking a breath can be with the gaseous extraction of the SF6 of the internal leakage of cabinet.

The present invention may be further configured in a preferred embodiment as: the leak protection cabinet front side is opened and is equipped with the operation mouth, one side of operation mouth towards interior framework is connected with operating gloves, operating gloves is connected through being connected the platform with one side of operation mouth towards interior framework, be provided with the fixed subassembly that is used for fixed operating gloves in the connection platform, leak protection cabinet is provided with the couple on seting up the perpendicular one side inner wall of operation mouth, it has the sealing bag to hook on the couple.

Through adopting above-mentioned technical scheme, when appearing gaseous leakage, operating personnel need handle the cabinet body, if open the cabinet body and can cause gaseous leaking, can be convenient stretch into the internal portion of cabinet and dismantle SF6 gas tube under operating gloves's effect, and wrap the body with the sealed bag, under fixed subassembly's effect, make the junction of connection platform and operating gloves be difficult for appearing leaking gas, and whether extinguish through observing the signal lamp and judge whether the internal gaseous residue of SF6 of cabinet, open the leak protection cabinet when the signal lamp extinguishes and change the SF6 trachea inside, overhaul when the convenience is to leaking gas, and be difficult for causing gaseous outer the leaking.

The present invention may be further configured in a preferred embodiment as: the fixed subassembly includes sealing plate and locking screw, the indent has been seted up to the one side that the connection platform deviates from the leak protection cabinet, the operation gloves tip is located the indent, sealing plate slides with the indent and is connected, locking screw one end is worn to establish at the connection bench, locking screw wears to establish the one end of going into in the connection platform and is connected with sealing plate one side rotation.

Through adopting above-mentioned technical scheme, when screwing up locking screw for the end of operation gloves is compressed tightly to the seal pressing plate, thereby makes the difficult separation with the connection platform of operation gloves, and difficult air leakage phenomenon appears in the junction with the connection platform.

The present invention may be further configured in a preferred embodiment as: the inner wall of one side of the leak-proof cabinet provided with the connecting table is also provided with a storage box for storing operating gloves.

Through adopting above-mentioned technical scheme, under the effect of receiver, can conveniently accomodate operating gloves, make operating gloves be difficult for drooping because of receiving the dead weight and cause and connect the not hard up phenomenon of platform junction.

The present invention may be further configured in a preferred embodiment as: the leak protection cabinet is provided with still being provided with the toolbox on the one side inner wall of couple.

Through adopting above-mentioned technical scheme, set up the toolbox in the leak protection cabinet, can place the necessary instrument that is used for dismantling the SF6 gas tube in the toolbox for when needing to dismantle the SF6 gas tube of gas leakage, can conveniently use the instrument in the toolbox to dismantle SF6 gas tube.

The present invention may be further configured in a preferred embodiment as: the leak protection cabinet includes a plurality of transparent visual mounting panels, and is a plurality of the mounting panel passes through the screw connection, and is a plurality of the mounting panel junction presss from both sides and is equipped with joint strip.

Through adopting above-mentioned technical scheme, the leak protection cabinet is connected through transparent visual mounting panel, can see the position of the last fixed electrical components and parts of inner frame body, can conveniently carry out the dismouting to the leak protection cabinet moreover, under joint strip's effect, reduces the possibility that gas leakage appears in the leak protection cabinet.

To sum up, the utility model discloses a following at least one useful technological effect:

1. under the action of the leakage-proof cabinet, SF6 gas is not easy to leak to the outside when leaking, under the action of the ventilation assembly, SF6 gas leaked from the leakage-proof cabinet is collected, whether gas leakage occurs or not is detected under the action of the gas concentration detector, and leakage alarm is realized under the action of the buzzer and the signal lamp, so that an operator is reminded to overhaul;

2. the SF6 inflation tube can be conveniently detached by operating gloves, so that the gas overflow of SF6 is controlled.

Drawings

Fig. 1 is a schematic structural view showing the whole.

Fig. 2 is a schematic sectional view showing the entire interior.

Fig. 3 is a partially enlarged schematic view of a portion a in fig. 2.

Fig. 4 is a partially enlarged schematic view of a portion B in fig. 2.

Fig. 5 is an exploded view, partially in section, of a fixed handling glove embodying a securing assembly.

In the figure, 1, a cabinet body; 11. an outer cabinet; 111. a buzzer; 112. a signal lamp; 12. a leakage-proof cabinet; 121. mounting a plate; 122. sealing rubber strips; 123. a gas detector; 124. a control switch; 125. an operation port; 126. hooking; 127. a tool box; 128. a storage box; 13. an inner frame body; 14. a lower cabinet; 141. a cushion pad; 2. a ventilation assembly; 21. a first extraction fan; 22. an air exhaust pipe; 23. a gas collecting air bag; 24. an exhaust nozzle; 25. a sealing cover; 26. a seal ring; 3. a pressure relief duct; 31. a second extraction fan; 4. a throttle valve; 5. a connecting table; 51. pressing a groove; 6. a fixing assembly; 61. sealing the pressure plate; 62. locking the screw; 7. operating gloves; 8. sealing the bag; 9. SF6 gas filled tube.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses a sulfur hexafluoride gas leakage alarm system, including the cabinet body 1, the cabinet body 1 includes outer cabinet 11, leak protection cabinet 12, interior framework 13 and lower cabinet 14, and outer cabinet 11, leak protection cabinet 12 and interior framework 13 distribute from outer to interior in proper order, and lower cabinet 14 is located the bottom of the outer cabinet 11 body 1, is fixed with electrical components and parts and SF6 gas tube 9 on the interior framework 13, and leak protection cabinet 12 is transparent visual for can observe inside electrical components and parts through leak protection cabinet 12.

Referring to fig. 2 and 3, the leakage-proof cabinet 12 has a plurality of mounting plates 121 connected with each other, the mounting plates 121 are transparent and visible, the mounting plates 121 are connected with each other by screws to form a rectangular leakage-proof cabinet 12, and a joint strip 122 is clamped at the joint of adjacent mounting plates 121, so that when gas leaks from the SF6 gas-filled tube 9, the gas is not easy to overflow from the leakage-proof cabinet 12.

Referring to fig. 1 and 2, a gas detector 123 is arranged in the leakage prevention cabinet 12, a buzzer 111 and a signal lamp 112 are arranged on the outer surface of the outer cabinet 11, the buzzer 111 and the signal lamp 112 are both electrically connected with the gas detector 123, and a control switch 124 electrically connected with the buzzer 111 is arranged on the outer wall of the leakage prevention cabinet 12, so that when gas leakage occurs, SF6 gas can be detected in the leakage prevention cabinet 12, when the gas detector 123 detects SF6 gas, the signal lamp 112 is lighted, and the buzzer 111 alarms, so that an operator can know that gas leakage occurs in the cabinet 1, and when the cabinet 1 is overhauled, the buzzer 111 is stopped by toggling the control switch 124, but the signal lamp 112 is still in a lighted state.

Referring to fig. 2, pressure relief ducts 3 are respectively provided between upper and lower sides of the leak-proof cabinet 12 and the body 1 of the outer cabinet 11, the pressure relief duct 3 on the top side is communicated with the outside, the pressure relief duct 3 on the bottom side is communicated with the body 1 of the lower cabinet 14, a throttle valve 4 is provided in each pressure relief duct 3, a ventilation assembly 2 is provided in the lower cabinet 14, the ventilation assembly 2 is located in the lower cabinet 14, the ventilation assembly 2 includes a first exhaust fan 21, an exhaust pipe 22 and a gas collection air bag 23, the first exhaust pipe 22 is located in the pressure relief duct 3 on the bottom side and is located on a side of the throttle valve 4 away from the inner frame 13, the gas collection air bag 23 is located in the lower cabinet 14 and is connected with the pressure relief duct 3 on the bottom side through the exhaust pipe 22, a second exhaust fan 31 is provided in the pressure relief duct 3 on the top side, the second exhaust fan 31 is located on a side of the throttle valve 4 facing the inner frame 13, so that when gas leakage is detected, the throttle valve 4 is opened, so that SF6 gas in the cabinet body 1 can be pumped into the gas collection air bag 23, and the buffer pad 141 is embedded in the inner wall of the lower cabinet 14, so that the lower cabinet 14 is prevented from being extruded and damaged when the gas collection air bag 23 expands due to gas collection under the action of the buffer pad 141.

Referring to fig. 2 and 4, one side that deviates from and is connected with exhaust tube 22 of gas collection gasbag 23 is provided with exhaust nozzle 24, exhaust nozzle 24 wears out from lower cabinet 14, and one side threaded connection that exhaust nozzle 24 wore out has sealed lid 25, sealed lid 25 inlays towards one side of exhaust nozzle 24 and is equipped with sealing washer 26, make when operating personnel overhauls the cabinet body 1, external equipment is connected with exhaust nozzle 24, thereby derive the gas in the gas collection gasbag 23, reduce the gas collection gasbag 23 and appear the possibility that transition inflation damaged, thereby reduce the possibility that gas appearance leaks outward.

Referring to fig. 5, an operation opening 125 is provided on the front side of the leakage-proof cabinet 12, a connection platform 5 is provided on one side of the operation opening 125 facing the inner frame 13 (see fig. 2), an operation glove 7 is connected on one side of the connection platform 5 facing away from the leakage-proof cabinet 12, a fixing component 6 for fixing the operation glove 7 is provided in the connection platform 5, the fixing component 6 includes a sealing press plate 61 and a locking screw 62, a pressing groove 51 is provided on one side of the connection platform 5 facing away from the leakage-proof cabinet 12, the sealing press plate 61 is connected with the pressing groove 51 in a sliding manner, the end of the operation glove 7 is located in the pressing groove 51, one end of the locking screw 62 is inserted into the connection platform 5 and connected with one side of the sealing press plate 61, so that the sealing pressure plate 61 is driven to press the operating glove 7 when the locking screw 62 is turned, thereby fixing the operating glove 7 and reducing the possibility of air leakage at the joint.

Referring to fig. 2, a tool box 127 is arranged on the inner wall of one side of the leakage-proof cabinet 12, and necessary tools for disassembling the SF6 gas-filled tube 9 are placed in the tool box 127, so that the SF6 gas-filled tube 9 can be quickly disassembled when needed, and the root cause of gas continuous leakage is blocked; still be provided with couple 126 on leak protection cabinet 12 sets up the homonymy inner wall of toolbox 127, it has sealing bag 8 to hook on the couple 126, make operating personnel lift off the back with SF6 gas tube 9 through operating gloves 7, can be convenient live SF6 gas tube 9 with sealing bag 8 cladding, thereby make the difficult continuous increase of SF6 gas in the cabinet body 1, and can take out the gaseous whole of SF6 in the cabinet body 1 under the effect of subassembly 2 of taking a breath, SF6 gas is taken out the back signal lamp 112 and is extinguished when the cabinet body 1, operating personnel can open leak protection cabinet 12 at this moment and overhaul and change SF6 gas tube 9 inside, and take out the SF6 gas tube 9 after lifting off.

Referring to fig. 2, a storage box 128 for storing the operating gloves 7 is further arranged on the inner wall of one side of the connection table 5 of the leakage-proof cabinet 12, so that after the SF6 inflation tube 9 is disassembled, the operating gloves 7 are conveniently stored into the storage box 128, and the phenomenon that the connection part of the operating gloves 7 and the connection table 5 is not loosened due to the fact that the operating gloves 7 are not prone to dropping due to self weight is avoided.

The implementation principle of the embodiment is as follows: whether gas leakage occurs or not can be detected through the gas detector 123 positioned in the leakage-proof cabinet 12, and alarm and prompt are performed through the buzzer 111 and the signal lamp 112, so that under the action of the control switch 124, when an operator overhauls the cabinet body 1, the buzzer 111 stops alarming, and the signal lamp 112 is only turned off when no SF6 gas exists in the cabinet body; can be with the gaseous extraction of the SF6 of inside from through subassembly 2 of taking a breath, and reduce the possibility of SF6 outer hourglass to the air, can put that limit and dismantle SF6 gas tube 9 in the cabinet body 1 under operation gloves 7's effect, thereby cut off the root cause of SF6 gas outer hourglass, thereby can be quick take out from the gas in the cabinet body 1, and open leak protection cabinet 12 and overhaul the inside, realized detecting alarm when leaking SF6 gas, and overhaul cabinet body 1, reduce the gaseous appearance of SF6 and overflow to the cabinet body 1 outside and cause the possibility of harm to environment and personnel.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a sulfur hexafluoride gas leakage alarm system, includes cabinet body (1), its characterized in that: the cabinet body (1) is divided into an outer cabinet (11), a leakage-proof cabinet (12) and an inner frame body (13) from outside to inside, a lower cabinet (14) is further arranged at the bottom of the outer cabinet (11), the inner frame body (13) is used for installing and fixing electrical components, the leakage-proof cabinet (12) is transparent and visible, a pressure relief pipeline (3) is arranged between the outer cabinet (11) and the leakage-proof cabinet (12), the pressure relief pipeline (3) is respectively arranged at the upper side and the lower side of the leakage-proof cabinet (12), the pressure relief pipeline (3) at the bottom is communicated with the lower cabinet (14), the pressure relief pipeline (3) at the top is communicated with the outside, throttle valves (4) are respectively arranged in the pressure relief pipelines (3) at the two sides of the leakage-proof cabinet (12), a ventilation assembly (2) is further arranged in the lower cabinet (14), a gas detector (123) is arranged in the leakage-proof cabinet (12), a buzzer (111) and a signal lamp (112, the outer wall of the front side of the leakage-proof cabinet (12) is provided with a control switch (124) electrically connected with a buzzer (111), and the signal lamp (112) and the buzzer (111) are both electrically connected with a gas detector (123).

2. The sulfur hexafluoride gas leak alarm system of claim 1, wherein: subassembly (2) take a breath includes first bleeding fan (21), exhaust tube (22) and gas collection gasbag (23), first bleeding fan (21) are located and are deviated from one side of inner frame body (13) in pressure release pipeline (3) of lower cabinet (14) intercommunication and are located throttle (4), one side that first bleeding fan (21) deviate from pressure release pipeline (3) is connected with exhaust tube (22) one end, the exhaust tube (22) other end is connected with gas collection gasbag (23), gas collection gasbag (23) are located lower cabinet (14).

3. The sulfur hexafluoride gas leak alarm system of claim 2, wherein: the inner wall of the lower cabinet (14) is embedded with a buffer pad (141).

4. The sulfur hexafluoride gas leak alarm system of claim 2, wherein: one side that gas collection gasbag (23) deviates from to be connected with exhaust tube (22) is provided with exhaust nozzle (24), exhaust nozzle (24) are worn out from lower cabinet (14), one side threaded connection that exhaust nozzle (24) wore out lower cabinet (14) has sealed lid (25), sealed lid (25) are inlayed towards one side of exhaust nozzle (24) and are equipped with sealing washer (26).

5. The sulfur hexafluoride gas leak alarm system of claim 4, wherein: and a second air exhaust fan (31) is further arranged in the pressure relief pipeline (3) communicated with the outside, and the second air exhaust fan (31) is positioned on one side, facing the inner frame body (13), of the throttle valve (4).

6. The sulfur hexafluoride gas leak alarm system of claim 4, wherein: leak protection cabinet (12) front side is opened and is equipped with operation mouth (125), operation mouth (125) are connected with operation gloves (7) towards one side of interior framework (13), operation gloves (7) are connected through connecting platform (5) with operation mouth (125) towards one side of interior framework (13), be provided with fixed subassembly (6) that are used for fixed operation gloves (7) in connecting platform (5), leak protection cabinet (12) with set up and be provided with couple (126) on the perpendicular one side inner wall of operation mouth (125), couple (126) are gone up to hook and are had sealing bag (8).

7. The sulfur hexafluoride gas leak alarm system of claim 6, wherein: fixed subassembly (6) are including seal pressing plate (61) and locking screw (62), indent (51) have been seted up to one side that connection platform (5) deviate from leak protection cabinet (12), operation gloves (7) tip is located indent (51), seal pressing plate (61) slide with indent (51) and are connected, locking screw (62) one end is worn to establish on connecting platform (5), locking screw (62) are worn to establish the one end of connecting in platform (5) and are rotated with seal pressing plate (61) one side and be connected.

8. The sulfur hexafluoride gas leak alarm system of claim 6, wherein: the inner wall of one side of the leak-proof cabinet (12) provided with the connecting table (5) is also provided with a storage box (128) used for storing the operating gloves (7).

9. The sulfur hexafluoride gas leak alarm system of claim 6, wherein: the inner wall of one side of the leakage-proof cabinet (12) provided with the hook (126) is also provided with a tool box (127).

10. A sulphur hexafluoride gas leak alarm system according to any one of claims 1 to 9, wherein: the leakage-proof cabinet (12) comprises a plurality of transparent and visible mounting plates (121), the mounting plates (121) are connected through screws, and sealing rubber strips (122) are clamped at the joints of the mounting plates (121).