Novel transformer substation sulfur hexafluoride gas monitoring device

Abstract

The utility model discloses a novel transformer substation sulfur hexafluoride gas monitoring device which comprises a mounting frame, a fan is arranged on the mounting frame, the fan is provided with a gas inlet and a gas outlet, the gas outlet is connected with a detection channel, an SF6 detector is arranged in the detection channel, the detection channel is communicated with a pump body, and the pump body is communicated with a gas inlet and a gas outlet. The pump body is provided with a first channel communicated with the detection channel, and the pump body is provided with a second channel communicated with the first channel; wherein an included angle a is formed between the second channel and the air inlet, the included angle a is larger than 30 degrees and smaller than 150 degrees, and the SF6 detector is electrically connected with the fan. The included angle a is formed between the second channel and the gas inlet, so that gas circulates in the transformer substation, and once SF6 leaks, the SF6 detection speed can be increased. And the SF6 detector is electrically connected with the fan, and when no SF6 is detected, the fan is in a low-power working state.

Description

Technical Field

[0001] The utility model relates to the technical field of sulfur hexafluoride gas monitoring, in particular to a novel sulfur hexafluoride gas monitoring device for a substation. Background Art

[0002] SF6 gas has a history of a hundred years. It is an artificial inert gas synthesized by two French chemists, Moissan and Lebeau, in 1900. Currently, SF6 gas is mainly used in the power industry. SF6 gas is used in four types of electrical equipment for insulation and / or arc extinguishing; 80% of SF6 gas is used in high and medium voltage power equipment.

[0003] Existing SF6 gas detectors are generally fixed in substations, and their detection ranges are limited. As a result, SF6 gas leaks and spreads to the location of the SF6 gas detector before the detector can alarm, which is insensitive and prone to forming potential safety hazards. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is: The utility model provides a novel sulfur hexafluoride gas monitoring device for a substation to solve the problems that the detection range of the SF6 gas detector is limited and potential safety hazards are easily formed.

[0005] The technical solution adopted by the utility model to solve the technical problem is: A novel sulfur hexafluoride gas monitoring device for a substation includes a mounting frame, a fan is arranged on the mounting frame, the fan is provided with an air inlet and an air outlet, the air outlet is connected to a detection channel, an SF6 detector is arranged in the detection channel, the detection channel is communicated with a pump body, the pump body is provided with a first channel communicated with the detection channel, and the pump body is provided with a second channel communicated with the first channel;

[0006] Wherein, the second channel forms an angle a with the air inlet, the angle a is greater than 30° and less than 150°, and the SF6 detector is electrically connected to the fan.

[0007] The beneficial effect of the utility model is: During the daily monitoring process of the substation, the fan is in a startup state, sucking air into the air inlet and discharging it into the detection channel for the SF6 detector to detect. When the gas does not contain SF6, the gas is discharged from the detection channel into the first channel and then discharged from the second channel. The second channel forms an angle a with the air inlet, causing the gas to circulate in the substation. Once there is an SF6 leak, it can accelerate the detection speed of SF6. The SF6 detector is electrically connected to the fan. When SF6 is not detected, the fan is in a low-power working state.

[0008] Preferably, the pump body is provided with a third channel communicated with the first channel, the third channel is communicated with an exhaust gas tank, and the SF6 detector is electrically connected to the pump body.

[0009] Preferably, a mounting plate is provided on one side of the pump body facing the detection channel, the SF6 detector is mounted on the mounting plate, and a plurality of heat dissipation wings are circumferentially spaced on the outer peripheral surface of the SF6 detector.

[0010] Preferably, the pump body is provided with a protruding portion, at least a part of the protruding portion extends into the interior of the detection channel, and the outer diameter of the protruding portion is adapted to the inner diameter of the detection channel.

[0011] Preferably, a seal is provided between the protruding portion and the detection channel, and the seal includes an O-ring.

[0012] Preferably, a positioning protrusion is provided on one side of the detection channel facing the air outlet, and a positioning groove adapted to the positioning protrusion is provided on one side of the air outlet facing the detection channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic three-dimensional structure diagram of a novel sulfur hexafluoride gas monitoring device for a substation;

[0014] Figure 2 is a partial cross-sectional view of a novel sulfur hexafluoride gas monitoring device for a substation;

[0015] Figure 3 is Figure 2 a partial enlarged view of part A in

[0016] In the figure: 1, mounting frame; 2, pump body; 3, third channel; 4, first channel; 5, detection channel; 6, fan; 7, air outlet; 8, air inlet; 9, second channel; 10, protruding portion; 11, heat dissipation wing; 12, SF6 detector; 13, O-ring; 14, mounting plate; 15, positioning protrusion. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0018] In this article, terms such as "upper, lower, inner, outer" are established based on the positional relationship shown in the drawings. Depending on the different drawings, the corresponding positional relationship may also change accordingly. Therefore, it cannot be understood as an absolute limitation of the protection scope; moreover, relational terms such as "first" and "second" are only used to distinguish one component with the same name from another, and do not necessarily require or imply any such actual relationship or order between these components.

[0019] Embodiment

[0020] As Figures 1-3 shown, the novel sulfur hexafluoride gas monitoring device for a substation includes a mounting frame 1. A fan 6 is provided on the mounting frame 1. The fan 6 is provided with an air inlet 8 and an air outlet 7. The air outlet 7 is connected to a detection channel 5. An SF6 detector 12 is provided in the detection channel 5. The detection channel 5 communicates with a pump body 2. The pump body 2 is provided with a first channel 4 communicating with the detection channel 5, and the pump body 2 is provided with a second channel 9 communicating with the first channel 4. Among them, the second channel 9 forms an angle a with the air inlet 8, and the angle a is greater than 30° and less than 150°. The SF6 detector 12 is electrically connected to the fan 6.

[0021] Specifically, during the daily monitoring of the substation, the fan 6 is in a starting state, sucking air into the air inlet 8 and discharging it into the detection channel 5 for the SF6 detector 12 to detect. When the gas does not contain SF6, the gas is discharged from the detection channel 5 into the first channel 4 and discharged from the second channel 9. The second channel 9 forms an angle a with the air inlet 8, causing the gas to circulate in the substation. Once there is an SF6 leak, it can accelerate the speed of detecting SF6. The SF6 detector 12 is electrically connected to the fan 6. When SF6 is not detected, the fan 6 is in a low-power working state.

[0022] The applicant needs to emphasize that the SF6 detector 12 is a high-voltage breakdown type sensor, and the SF6 detector 12 is regarded as a mature existing technology, and its internal structure will not be elaborated too much here.

[0023] Furthermore, the pump body 2 is provided with a third channel 3 communicating with the first channel 4. The third channel 3 communicates with an exhaust gas tank. The SF6 detector 12 is electrically connected to the pump body 2. When SF6 is detected, the pump body 2 cuts off the connection loop between the first channel 4 and the second channel 9, and opens the connection loop between the first channel 4 and the third channel 3. And control the fan 6 to enter a high-power working state to quickly suck the gas containing SF6 into the exhaust gas tank.

[0024] Furthermore, a mounting plate 14 is provided on the side of the pump body 2 facing the detection channel 5. The SF6 detector 12 is mounted on the mounting plate 14. A plurality of heat dissipation wings 11 are circumferentially and spacedly arranged on the outer peripheral surface of the SF6 detector 12. The mounting plate 14 partially blocks the first channel 4, and it will not affect the gas flowing from the detection channel 5 to the first channel 4. The heat dissipation wings 11 are used to dissipate heat for the SF6 detector 12, and due to the continuous gas flow, the SF6 detector 12 will not overheat even when working continuously.

[0025] Furthermore, the pump body 2 is provided with a protrusion 10. At least a part of the protrusion 10 extends into the interior of the detection channel 5, and the outer diameter of the protrusion 10 is adapted to the inner diameter of the detection channel 5. The protrusion 10 is used to improve the sealing performance.

[0026] Furthermore, a seal is provided between the protrusion 10 and the detection channel 5, and the seal includes an O-ring 13. The seal is used to further improve the sealing performance and prevent SF6 from leaking.

[0027] Furthermore, a positioning protrusion 15 is provided on the side of the detection channel 5 facing the air outlet 7, and a positioning groove adapted to the positioning protrusion 15 is provided on the side of the air outlet 7 facing the detection channel 5. The cooperation of the positioning protrusion 15 and the positioning groove facilitates the installation of the detection channel 5, and the cooperation of the positioning protrusion 15 and the positioning groove can also improve the sealing performance.

[0028] The above technical features can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

Claims

1. A new type of substation sulfur hexafluoride gas monitoring device, characterized in that: The invention comprises a mounting frame (1), the mounting frame (1) being provided with a fan (6), the fan (6) being provided with an air inlet (8) and an air outlet (7), the air outlet (7) being connected to a detection channel (5), the detection channel (5) being provided with an SF6 detector (12), the detection channel (5) being connected to a pump body (2), the pump body (2) being provided with a first channel (4) connected to the detection channel (5), and the pump body (2) being provided with a second channel (9) connected to the first channel (4); The second channel (9) and the air inlet (8) form an angle a, the angle a being greater than 30° and less than 150°, and the SF6 detector (12) is electrically connected to the fan (6).

2. The novel substation sulfur hexafluoride gas monitoring device according to claim 1 is characterized in that: The pump body (2) is provided with a third channel (3) connected to the first channel (4), the third channel (3) is connected to an exhaust gas tank, and the SF6 detector (12) is electrically connected to the pump body (2).

3. The novel substation sulfur hexafluoride gas monitoring device according to claim 1 is characterized in that: A mounting plate (14) is provided on a side of the pump body (2) facing the detection channel (5), the SF6 detector (12) is mounted on the mounting plate (14), and a plurality of heat dissipation wings (11) are provided at intervals along the circumferential direction on the outer peripheral surface of the SF6 detector (12).

4. The novel substation sulfur hexafluoride gas monitoring device according to claim 1 is characterized in that: The pump body (2) is provided with a protrusion (10), wherein the protrusion (10) at least partially extends into the interior of the detection channel (5), and the outer diameter of the protrusion (10) is adapted to the inner diameter of the detection channel (5).

5. The novel substation sulfur hexafluoride gas monitoring device according to claim 4 is characterized in that: A sealing member is provided between the protruding portion (10) and the detection channel (5), the sealing member comprising an O-ring (13).

6. The novel substation sulfur hexafluoride gas monitoring device according to claim 5 is characterized in that: A positioning protrusion (15) is provided on one side of the detection channel (5) facing the air outlet (7), and a positioning groove adapted to the positioning protrusion (15) is provided on one side of the air outlet (7) facing the detection channel (5).

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