Gas density monitoring device and shell sealing assembly thereof

Abstract

The utility model relates to a gas density monitoring device and a shell sealing assembly thereof, and in the gas density monitoring device and the shell sealing assembly thereof, a transparent sheet at the front end of an observation cover and a side wall surrounding the periphery of the transparent sheet are in an integrated structure form; the rear end of the observation cover is directly connected with the base in a sealed mode to form the sealed containing cavity used for containing the gas density monitoring device, the side wall of the observation cover replaces a thin-wall metal side wall in an existing design, sealing between the front end of the observation cover and the thin-wall metal side wall in the existing design is omitted, and the point leakage risk is reduced; the protective cover is arranged on the outer side of the observation cover in a sleeving mode, so that the protective effect and the strength reinforcing effect on the observation cover can be achieved, and the strength requirement of the shell can be met; therefore, according to the gas density monitoring device and the shell sealing assembly thereof, the sealing performance of the shell of the gas density monitoring device can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of gas density monitoring device and shell sealing assembly thereof, mainly related to the gas density monitoring device field for monitoring the density of insulating gas in electrical equipment. BACKGROUND

[0002] Gas density relay and gas density meter are widely used in power system, and they are commonly used gas density monitoring devices. The performance of gas density monitoring device directly affects the reliable and safe operation of its related system. Therefore, ensuring the reliable and safe operation of these gas density monitoring devices has become one of the important tasks and work of people. Especially in high-altitude areas, the increase of altitude will lead to the change of atmospheric pressure, which will affect the precision. Therefore, we need the gas density monitoring device to realize the sealing state of the whole shell, achieve the complete isolation of the atmospheric pressure inside and outside the shell, and avoid the occurrence of poor precision or oil and gas leakage.

[0003] At present, due to the poor sealing performance of the shell of these density relay monitoring devices, especially in high-altitude areas, it brings errors in precision, which brings losses to users, and seriously affects normal use. In addition, the monitoring device needs to be filled with oil (usually silicon oil) to improve the anti-vibration performance, and also needs good shell sealing performance. Therefore, how to improve the sealing performance of the shell of the gas density monitoring device is a technical problem to be solved in the field. SUMMARY

[0004] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the utility model is to provide a gas density monitoring device and a shell sealing assembly thereof, which can improve the sealing performance of the shell of the gas density monitoring device.

[0005] To achieve the above-mentioned purpose, the utility model provides a shell sealing assembly of a gas density monitoring device, which comprises a viewing cover and a base. The viewing cover is a one-piece structure, which comprises a transparent sheet arranged at the front end of the viewing cover and a side wall arranged around the transparent sheet. The side wall extends towards the rear end of the viewing cover. The base is sealingly capped at the rear end of the viewing cover, and a sealed cavity for accommodating the display components of the gas density monitoring device is formed between the viewing cover and the base. A protective cover is provided outside the viewing cover, and an observation port is provided at the front end of the protective cover. The transparent sheet of the viewing cover faces the observation port.

[0006] Preferably, the base comprises a circular boss portion, a first sealing groove is arranged on the outer sidewall of the boss portion, a plurality of arc-shaped enclosing walls are arranged around the central axis of the boss portion, and the arc-shaped enclosing walls and the outer sidewall of the boss portion form an annular insertion groove; the rear end of the sidewall of the observation cover is inserted into the annular insertion groove; a first sealing ring is arranged in the first sealing groove, the inner wall surface of the sidewall of the observation cover is in sealing cooperation with the first sealing ring, and the outer wall surface of the sidewall of the observation cover is in abutment with the inner wall surface of the arc-shaped enclosing wall.

[0007] More preferably, the arc-shaped enclosing wall and the rear end of the sidewall of the observation cover are provided with mutually cooperating clamping structures.

[0008] Further, the arc-shaped enclosing wall is provided with a clamping groove extending in the circumferential direction thereof, and the outer surface of the rear end of the sidewall of the observation cover is provided with a clamping tooth clamped in the clamping groove.

[0009] Further, at least one clamping groove is arranged on one arc-shaped enclosing wall, and the outer surface of the rear end of the sidewall of the observation cover is provided with at least one clamping tooth.

[0010] Preferably, a reinforcing hoop is further sleeved outside the outer sidewall of the rear end of the observation cover.

[0011] Preferably, the observation cover is integrally formed by injection molding of organic glass or transparent plastic.

[0012] Preferably, the base is further provided with a filling inlet for inflating the sealed cavity, and a sealing plug is arranged on the filling inlet.

[0013] Corresponding to the shell sealing assembly of the gas density monitoring device, the utility model also provides a gas density monitoring device, including any technical scheme of the shell assembly, the sealed cavity is installed with display component, or / and monitoring component.

[0014] Preferably, the front end of the observation cover is provided with a second sealing groove, a second sealing ring is arranged in the second sealing groove, the protective glass window is in sealing cooperation with the second sealing ring, and the observation port is provided with an annular lip extending towards the inner side of the protective cover, and the protective glass window is clamped between the annular lip and the transparent sheet of the observation cover.

[0015] The utility model relates to a kind of gas density monitoring device and its shell sealing assembly, with the following beneficial effects: in the utility model of a kind of gas density monitoring device and its shell sealing assembly, since the transparent sheet of the front end of observation cover and the side wall around the transparent sheet are used with integrated structure form, the rear end of observation cover is directly sealed and connected between base and forms the sealed cavity for accommodating gas density monitoring device display component, the side wall of observation cover replaces the thin-wall metal side wall in the existing design, so that the sealing of the front end of observation cover and thin-wall metal side wall in the existing design is saved, and the risk of leakage point is reduced;And protective cover is sleeved on the outside of observation cover, can play the protection effect and strength reinforcing effect to observation cover, can satisfy the strength demand of shell;Therefore, the utility model of a kind of gas density monitoring device and its shell sealing assembly can improve the sealing performance of gas density monitoring device shell. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It shows the front view of the utility model of a kind of gas density monitoring device.

[0017] Figure 2 It shows the sectional view of the utility model of a kind of gas density monitoring device.

[0018] Figure 3 It shows the Figure 2 Enlarged view of C in the middle.

[0019] Figure 4 It shows the perspective structure view of observation cover.

[0020] Figure 5 It shows the perspective structure view of base.

[0021] Figure 6 It shows the schematic diagram of the embodiment of the observation cover outside being provided with reinforcing hoop.

[0022] REFERENCE NUMERALS:

[0023] 1 observation cover

[0024] 2 base

[0025] 3 transparent sheet

[0026] 4 side wall

[0027] 5 sealed cavity

[0028] 6 boss portion

[0029] 7 first sealing groove

[0030] 8 arc-shaped surrounding wall

[0031] 9 annular insertion slot

[0032] 10 first sealing ring

[0033] 11 card slot

[0034] 12 card tooth

[0035] 13 reinforcing hoop

[0036] 14 filling inlet

[0037] 15 sealing plug

[0038] 16 display component

[0039] 17 protective cover

[0040] 18 observation port

[0041] 19 second sealing groove

[0042] 20 second sealing ring

[0043] 21 annular lip

[0044] 22 pointer

[0045] 23 baratron tube

[0046] 24 temperature compensation sheet

[0047] 25 movement

[0048] 26 protective glass window DETAILED DESCRIPTION

[0049] The implementation of the present application will be described by specific embodiments, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification.

[0050] It should be understood that the structures, proportions, sizes, etc. shown in the drawings attached to the specification are only used to understand and read the content disclosed in the specification for those skilled in the art, and are not used to limit the implementation conditions of the present application, so they do not have technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and the like in the specification are only for the convenience of clear description, and are not used to limit the scope of the present application. The change or adjustment of the relative relationship without substantial change of the technical content is also considered as the scope of the present application.

[0051] Please refer to Figures 1 to 3The utility model provides a kind of shell sealing assembly of gas density monitoring device, including observation cover 1 and base 2;The observation cover 1 is integrated structure, and observation cover 1 includes the transparent sheet 3 being arranged at the front end of observation cover 1 and the side wall 4 being surrounded in the periphery of transparent sheet 3, the side wall 4 extends towards the rear end of observation cover 1;The base 2 is sealedly capped in the rear end of observation cover 1, and the sealed cavity 5 for accommodating gas density monitoring device display component 16 is formed between observation cover 1 and base 2;The observation cover 1 outside is equipped with protective cover 17, and protective cover 17 front end is equipped with observation port 18, and the transparent sheet 3 of observation cover 1 is towards observation port 18.

[0052] The utility model of a kind of shell sealing assembly of gas density monitoring device, can improve the sealing performance of gas density monitoring device. The structure of integrated structure's observation cover 1 is simplified, and the number of components is reduced, and sealing point is reduced, to reduce the risk of leakage point. Protective cover 17 is equipped with the outside of observation cover, and protective cover 17 not only plays the protection function, but also enhances the strength of shell, satisfies shell strength demand. Therefore, the utility model of a kind of gas density monitoring device and its shell sealing assembly, can improve the sealing performance of gas density monitoring device shell.

[0053] To reliably seal observation cover 1 with base 2, please refer to Figure 3 And Figure 5 The base 2 includes circular boss part 6, and the first sealing groove 7 is arranged on the outer side wall 4 of boss part 6, and the arc-shaped surrounding wall 8 is arranged around the central axis of boss part 6, and the annular insertion groove 9 is formed between the arc-shaped surrounding wall 8 and the outer side wall 4 of boss part 6. The rear end of the side wall 4 of the observation cover 1 is inserted into the annular insertion groove 9. The first sealing ring 10 is arranged in the first sealing groove 7, and the inner wall surface of the side wall 4 of the observation cover 1 is in sealing cooperation with the first sealing ring 10. The outer wall surface of the side wall 4 of the observation cover 1 is in abutment with the inner wall surface of the arc-shaped surrounding wall 8. In this way, the boss part 6 of the base 2 is inserted into the opening at the rear end of the observation cover 1, and the first sealing ring 10 is squeezed by the inner wall surface of the side wall 4 of the observation cover 1 and the boss part 6, so that the base 2 and the observation cover 1 are reliably sealed. The rear end of the side wall 4 of the observation cover 1 is inserted into the annular insertion groove 9, so that the side wall 4 at the rear end of the observation cover 1 is limited in the annular insertion groove 9 and is not easy to deform to cause poor sealing. As shown in Figure 6 To strengthen the strength and rigidity of the rear end of the observation cover 1 and prevent the rear end of the observation cover 1 from deforming to cause poor sealing, a reinforcing hoop 13 can be arranged outside the outer side wall 4 at the rear end of the observation cover 1. To arrange the reinforcing hoop 13, the observation cover 1 and the protective cover 17 can be designed in detail to provide installation space for the reinforcing hoop 13. The shape of the reinforcing hoop 13 can be adapted to the protective cover 17. The outer side of the reinforcing hoop 13 can be provided with a plurality of protruding parts arranged around the central axis of the reinforcing hoop 13. The shape of the reinforcing hoop 13 is adapted to the protective cover 17. Figure 4The observation cover structure is adapted.

[0054] In order to reliably connect the observation cover 1 and the base 2, and avoid the observation cover 1 wall surface stress concentration deformation caused by screw connection, as a preferred embodiment, the arc-shaped surrounding wall 8 and the rear end of the side wall 4 of the observation cover 1 are provided with a clamping structure matched with each other. Figure 4 and Figure 5 As shown in the drawings, the arc-shaped surrounding wall 8 is provided with a clamping groove 11 extending along the circumferential direction, and the outer surface of the rear end of the side wall 4 of the observation cover 1 is provided with a clamping tooth 12 clamped in the clamping groove 11. Figure 4 and Figure 5 The base 2 is inserted into the opening at the rear end of the observation cover 1, and the clamping tooth 12 on the observation cover 1 is aligned with the clamping groove 11 on the arc-shaped surrounding wall 8, and then the observation cover 1 is rotated relative to the base 2, so that the clamping tooth 12 is clamped into the clamping groove 11.

[0055] In order to reliably connect the observation cover 1 and the base 2, at least one clamping groove 11 (two clamping grooves 11 in the embodiment) is arranged on the arc-shaped surrounding wall 8, and at least one clamping tooth 12 (two clamping teeth 12 in the embodiment) is arranged on the outer surface of the rear end of the side wall 4 of the observation cover 1. Of course, the clamping structure between the base 2 and the observation cover 1 can also be realized by other specific structural forms, and is not limited to the clamping tooth 12 and the clamping groove 11 structure in the drawings. Figure 4 and Figure 5 The clamping tooth 12 and the clamping groove 11 structure in the drawings are not listed here.

[0056] In order to facilitate manufacturing and processing, the observation cover 1 is integrally formed by injection molding of organic glass or transparent plastic, and the observation cover 1 can be injection molded by polyurethane material, which has good transparency and is convenient for injection molding.

[0057] In order to make the gas density monitoring device not affected by the external air pressure, the sealed cavity 5 is usually filled with gas or oil, and in order to facilitate the filling of gas or oil into the sealed cavity 5, the base 2 is further provided with a filling inlet 14 for filling the sealed cavity 5 with gas, and the filling inlet 14 is provided with a sealing plug 15.

[0058] Corresponding to the shell sealing assembly of the gas density monitoring device, the utility model also provides a gas density monitoring device, which comprises the shell assembly of any of the above technical solutions, and the sealed cavity 5 is provided with display components 16 and monitoring components.

[0059] In order to prevent the observation cover 1 from being eroded and aged, the second sealing groove 19 is arranged at the front end of the observation cover 1, the second sealing ring 20 is arranged in the second sealing groove 19, and the protective glass window 26 is in sealing cooperation with the second sealing ring 20; the observation port 18 is provided with the annular lip 21 extending towards the inner side of the protective cover 17, and the protective glass window 26 is clamped between the annular lip 21 and the transparent sheet 3 of the observation cover 1; the material of the protective glass window 26 is transparent glass, which does not discolor and does not age.

[0060] The utility model provides a kind of gas density monitoring device, display component 16 includes baratron 23 and movement 25, one end of baratron 23 is fixedly sealed on base, base is communicated with joint on gas path, the other end of baratron 23 is sealed, baratron 23 is connected with temperature compensation sheet 24, temperature compensation sheet 24 is connected with the movement 25 of installation pointer 22 The movement 25 is connected and can drive the mechanism movement in movement 25 to drive pointer 22 to indicate gas density;Baratron 23 is a elastic element, i.e.

[0061] Please refer to Figure 1 And Figure 2 The utility model provides a kind of gas density monitoring device, the sealed cavity 5 in the shell interior is fully sealed, keeps stable standard gas pressure, so that the deformation of pressure baratron 23 due to gas pressure is not influenced by the gas pressure of shell exterior, realizes high-precision pressure measurement, and the performance advantage is more prominent in high-altitude area. At the same time, the protective glass window 26 equipped can prevent the situation that the observation is inconvenient due to the weakening of perspective caused by the aging of sealed glass in long-term use, prolongs service life.

[0062] The utility model discloses a kind of gas density monitoring device and shell sealing assembly thereof, by reducing the number of components, enhancing sealing performance and improving structural strength, effectively improve the sealing performance of gas density monitoring device shell, reduce the risk of leakage point, also meet the strength demand of shell. Such design not only improves the reliability of monitoring device, also helps to prolong its service life.

[0063] As described above, the utility model effectively overcomes the various shortcomings in the prior art and has high industrial utilization value.

[0064] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A housing seal assembly for a gas density monitoring device, characterized by, The observation cover and the base; The observation cover is an integral structure, and the observation cover comprises a transparent sheet arranged at the front end of the observation cover and a side wall arranged around the transparent sheet, and the side wall extends towards the rear end of the observation cover; The base is sealingly capped at the rear end of the observation cover, and a sealed cavity for accommodating display components of the gas density monitoring device is formed between the observation cover and the base; The observation cover is sleeved with a protective cover outside, the protective cover is provided with an observation port at the front end, and the transparent sheet of the observation cover faces the observation port.

2. The housing seal assembly for a gas density monitor of claim 1, wherein: The base comprises a circular boss portion, a first sealing groove is arranged on the outer side wall of the boss portion, a plurality of arc-shaped enclosing walls are arranged around the central axis of the boss portion, and an annular insertion groove is formed between the arc-shaped enclosing walls and the outer side wall of the boss portion; the rear end of the side wall of the observation cover is inserted into the annular insertion groove; a first sealing ring is arranged in the first sealing groove, the inner wall surface of the side wall of the observation cover is sealingly matched with the first sealing ring, and the outer wall surface of the side wall of the observation cover is abutted against the inner wall surface of the arc-shaped enclosing wall.

3. The housing seal assembly for a gas density monitor of claim 2, wherein: The arc-shaped enclosing wall and the rear end of the side wall of the observation cover are provided with a clamping structure matched with each other.

4. The housing seal assembly for a gas density monitor of claim 3, wherein: The arc-shaped enclosing wall is provided with a clamping groove extending in the circumferential direction, and the outer surface of the rear end of the side wall of the observation cover is provided with a clamping tooth clamped in the clamping groove.

5. The housing seal assembly for a gas density monitor of claim 3, wherein: At least one clamping groove is arranged on at least one arc-shaped enclosing wall, and at least one clamping tooth is arranged on the outer surface of the rear end of the side wall of the observation cover.

6. The housing seal assembly for a gas density monitor of claim 1, wherein: A reinforcing hoop is further sleeved outside the outer side wall of the rear end of the observation cover.

7. The housing seal assembly for a gas density monitor of claim 1, wherein: The observation cover is integrally formed by injection molding of organic glass or transparent plastic.

8. The housing seal assembly for a gas density monitor of claim 1, wherein: A filling inlet for filling the sealed cavity with gas is further arranged on the base, and a sealing plug is arranged on the filling inlet.

9. A gas density monitoring device, characterized by, The sealed cavity is provided with display components and / or monitoring components.

10. A gas density monitoring apparatus according to claim 9, characterised in that: The observation port is blocked by a protective glass window, a second sealing groove is arranged at the front end of the observation cover, a second sealing ring is arranged in the second sealing groove, the protective glass window is sealingly matched with the second sealing ring, the observation port is provided with an annular lip extending towards the inner side of the protective cover, and the protective glass window is clamped between the annular lip and the transparent sheet of the observation cover.

Images