Sulfur hexafluoride real-time detection equipment

Abstract

The utility model discloses sulfur hexafluoride real-time detection equipment which comprises a pair of mounting plates, an inner-layer sleeve and an outer-layer sleeve are arranged between the pair of mounting plates, the inner-layer sleeve and the pair of mounting plates are encircled to form a detection space, end covers are arranged on the outer sides of the mounting plates, detectors and electrodes are arranged in the end covers, and the electrodes are arranged on the outer sides of the end covers. The inner-layer sleeve is connected with a gas inlet and a gas outlet, and the gas inlet and the gas outlet are both communicated with the detection space; wherein a cooling medium inlet is formed in the middle of the sleeve on the outer layer, a first cooling medium outlet and a second cooling medium outlet are formed in the sleeve on the outer layer, and the cooling medium inlet is located between the first cooling medium outlet and the second cooling medium outlet. The cooling medium enters the space between the inner sleeve and the outer sleeve and is discharged from the first cooling medium outlet and the second cooling medium outlet to take away heat so as to maintain the constant temperature in the detection space, and the temperature is prevented from affecting the detection precision.

Description

Technical Field

[0001] The utility model relates to the technical field of sulfur hexafluoride detection, in particular to a real-time sulfur hexafluoride detection device. Background Art

[0002] Sulfur hexafluoride is an inorganic compound with the chemical formula SF6. It is a colorless, odorless, non-toxic, non-flammable, stable gas at room temperature and pressure. Sulfur hexafluoride is an asphyxiant. At high concentrations, it can cause breathing difficulties, wheezing, blue skin and mucous membranes, and whole body spasms. my country stipulates that the allowable concentration of sulfur hexafluoride gas in the air of the operating room should not exceed 6g / m3 or the oxygen content in the air should be greater than 18%.

[0003] Existing sulfur hexafluoride detection technology, including electrical breakdown technology, evolved from the typical application of SF6 in electricity - as an insulating gas in GIS switchgear. Its working principle is to judge whether the air contains SF6 gas based on the change in voltage between high-voltage electrodes placed in the detected air based on the insulation characteristics of SF6 gas. It has the characteristics of relatively simple structure, low cost and relatively high detection accuracy.

[0004] However, the detection accuracy of electrical breakdown technology is greatly affected by temperature. Utility Model Content

[0005] The technical problem to be solved by the utility model is: the utility model provides a real-time sulfur hexafluoride detection device to solve the problem that the accuracy of the detection device is affected by temperature.

[0006] The technical solution adopted by the utility model to solve the technical problem is: a real-time sulfur hexafluoride detection device, including a pair of mounting plates, an inner and outer sleeve is arranged between the pair of mounting plates, the inner sleeve and the pair of mounting plates are surrounded to form a detection space, an end cover is arranged on the outer side of the mounting plate, a detector and an electrode are arranged inside the end cover, the inner sleeve is connected to a gas inlet and a gas outlet, and the gas inlet and the gas outlet are both connected to the detection space;

[0007] A cooling medium inlet is arranged in the middle of the outer sleeve, and a first cooling medium outlet and a second cooling medium outlet are arranged on the outer sleeve respectively, and the cooling medium inlet is located between the first cooling medium outlet and the second cooling medium outlet.

[0008] The beneficial effect of the utility model is that the detection device determines whether the air contains SF6 gas from the change in the voltage between the electrodes placed in the detected space. The cooling medium enters between the inner and outer sleeves from the cooling medium inlet and is discharged from the first cooling medium outlet and the second cooling medium outlet, taking away the heat to maintain the temperature in the detection space constant, avoiding the temperature affecting the detection accuracy, and by setting the first cooling medium outlet and the second cooling medium outlet to reduce the working stroke of the cooling medium, avoiding the temperature of the cooling medium having a large amplitude, resulting in a temperature gradient in the detection space, affecting the detection result.

[0009] Preferably, the outer peripheral surface of the outer sleeve is provided with a heat insulating sleeve.

[0010] Preferably, the sleeve extends into the mounting plate, and the sleeve is fixed to the mounting plate by an adhesive.

[0011] Preferably, a first annular groove is provided in the mounting plate, an annular airbag is provided in the first annular groove, and a second annular groove adapted to the annular airbag is provided in the sleeve.

[0012] Preferably, a water dividing ring plate is arranged at a position of the first sleeve adjacent to the cooling medium inlet, and a water retaining ring plate is arranged at intervals on the outer sleeve, and the water dividing ring plate and the water retaining ring plate are arranged between the inner and outer sleeves.

[0013] Preferably, the outer sleeve is provided with a mounting seat;

[0014] And / or, the end cap is provided with a wiring connector;

[0015] And / or, a fastener is provided between the end cover and the mounting plate, and the end cover and the mounting plate are connected via the fastener. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of a sulfur hexafluoride real-time detection device;

[0017] Figure 2 is a cross-sectional view of a sulfur hexafluoride real-time detection device;

[0018] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0019] Figure 4 for Figure 2 A partial enlarged view of point B in the middle.

[0020] In the figure: 1. thermal insulation sleeve; 2. gas inlet; 3. cooling medium inlet; 4. gas outlet; 5. connector; 6. end cover; 7. first cooling medium outlet; 8. mounting seat; 9. second cooling medium outlet; 10. detector; 11. electrode; 12. detection space; 14. sleeve; 15. fastener; 16. mounting plate; 17. first annular groove; 18. annular airbag; 19. water dividing ring plate; 20. water retaining ring plate. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] In this article, the terms "upper, lower, inside, outside" and the like are established based on the positional relationships shown in the drawings. The corresponding positional relationships may also change depending on the drawings, and therefore cannot be understood as absolute limitations on the scope of protection; moreover, relational terms such as "first" and "second" and the like are merely used to distinguish one component from another with the same name, and do not necessarily require or imply any actual relationship or order between these components.

[0023] Example

[0024] like Figure 1-4 As shown, a sulfur hexafluoride real-time detection device includes a pair of mounting plates 16, an inner and outer sleeve 14 is arranged between the pair of mounting plates 16, the inner sleeve 14 and the pair of mounting plates 16 enclose a detection space 12, an end cover 6 is arranged on the outer side of the mounting plate 16, a detector 10 and an electrode 11 are arranged inside the end cover 6, the inner sleeve 14 is connected to a gas inlet 2 and a gas outlet 4, and the gas inlet 2 and the gas outlet 4 are both connected to the detection space 12;

[0025] A cooling medium inlet 3 is disposed in the middle of the outer sleeve 14 , and a first cooling medium outlet 7 and a second cooling medium outlet 9 are disposed on the outer sleeve 14 . The cooling medium inlet 3 is located between the first cooling medium outlet 7 and the second cooling medium outlet 9 .

[0026] Specifically, the detection device determines whether the air contains SF6 gas from the change in voltage between the electrodes 11 placed in the detected space 12. The cooling medium enters between the inner and outer sleeves 14 from the cooling medium inlet 3, and is discharged from the first cooling medium outlet 7 and the second cooling medium outlet 9, taking away heat to maintain a constant temperature in the detection space 12, avoiding the temperature from affecting the detection accuracy, and by providing the first cooling medium outlet 7 and the second cooling medium outlet 9, the working stroke of the cooling medium is reduced, avoiding the temperature of the cooling medium from having a large amplitude, resulting in a temperature gradient in the detection space 12, and affecting the detection result.

[0027] The applicant needs to emphasize that the detector 10 is considered as a mature prior art, and its specific structure is not elaborated too much here. The gas inlet 2 and the gas outlet 4 are connected to a power source through a pipeline, and the power source discharges new air into the detection space 12 to maintain real-time detection.

[0028] Furthermore, the outer peripheral surface of the outer sleeve 14 is provided with a heat insulating sleeve 1. The heat insulating sleeve 1 is used to isolate the external heat from being transferred into the detection space 12, and further maintain the temperature in the detection space 12 constant.

[0029] Furthermore, the sleeve 14 extends into the mounting plate 16, and the sleeve 14 is fixed to the mounting plate 16 by an adhesive. The adhesive not only has a fixing function but also has a certain sealing function.

[0030] Furthermore, a first annular groove 17 is provided in the mounting plate 16, an annular airbag 18 is provided in the first annular groove 17, and a second annular groove matching the annular airbag 18 is provided in the sleeve 14. The annular airbag 18 is used for sealing, and preferably, the inner and outer layers of the inner sleeve 14 are both provided with second annular grooves to prevent the cooling medium from entering the detection space 12 and affecting the detection results.

[0031] Furthermore, the inner sleeve 14 is provided with a water dividing ring plate 19 near the cooling medium inlet 3, and the outer sleeve 14 is provided with a water retaining ring plate 20 at intervals, and the water dividing ring plate 19 and the water retaining ring plate 20 are arranged between the inner and outer sleeves 14. The water dividing ring plate 19 is used to divert the cooling medium discharged from the cooling medium inlet 3, and the water retaining ring plate 20 is used to disturb the flow direction of the cooling medium to avoid the temperature gradient between the cooling media.

[0032] Further, the outer sleeve 14 is provided with a mounting seat 8; the mounting seat 8 is used to install the detection equipment. And / or, the end cover 6 is provided with a connector 5; and / or, a fastener 15 is provided between the end cover 6 and the mounting plate 16, and the end cover 6 and the mounting plate 16 are connected by the fastener 15. The fastener 15 is preferably a bolt.

[0033] The above-mentioned technical features can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A real-time sulfur hexafluoride detection device, characterized in that: The invention comprises a pair of mounting plates (16), an inner and outer sleeve (14) are arranged between the pair of mounting plates (16), the inner sleeve (14) and the pair of mounting plates (16) together form a detection space (12), an end cover (6) is arranged on the outside of the mounting plates (16), a detector (10) and an electrode (11) are arranged inside the end cover (6), the inner sleeve (14) is connected to a gas inlet (2) and a gas outlet (4), and the gas inlet (2) and the gas outlet (4) are both connected to the detection space (12); A cooling medium inlet (3) is provided in the middle of the outer sleeve (14), and a first cooling medium outlet (7) and a second cooling medium outlet (9) are provided on the outer sleeve (14), respectively; the cooling medium inlet (3) is located between the first cooling medium outlet (7) and the second cooling medium outlet (9).

2. A sulfur hexafluoride real-time detection device according to claim 1, characterized in that: The outer peripheral surface of the outer sleeve (14) is provided with a heat insulating sleeve (1).

3. A sulfur hexafluoride real-time detection device according to claim 1, characterized in that: The sleeve (14) extends into the mounting plate (16), and the sleeve (14) is fixed to the mounting plate (16) by means of an adhesive.

4. A sulfur hexafluoride real-time detection device according to claim 3, characterized in that: A first annular groove (17) is provided in the mounting plate (16), an annular airbag (18) is provided in the first annular groove (17), and a second annular groove adapted to the annular airbag (18) is provided in the sleeve (14).

5. A sulfur hexafluoride real-time detection device according to claim 1, characterized in that: The inner sleeve (14) is provided with a water dividing ring plate (19) at a position adjacent to the cooling medium inlet (3), and the outer sleeve (14) is provided with a water retaining ring plate (20) at intervals, and the water dividing ring plate (19) and the water retaining ring plate (20) are both arranged between the inner and outer sleeves (14).

6. A sulfur hexafluoride real-time detection device according to claim 1, characterized in that: The outer sleeve (14) is provided with a mounting seat (8); And / or, the end cover (6) is provided with a connector (5); And / or, a fastener (15) is provided between the end cover (6) and the mounting plate (16), and the end cover (6) and the mounting plate (16) are connected via the fastener (15).

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