CN204884876U

CN204884876U - Explosion -proof capacitor

Info

Publication number: CN204884876U
Application number: CN201520535189.4U
Authority: CN
Inventors: 熊文华; 李义; 郑颖; 万美云
Original assignee: Anhui Jiangwei Precision Manufacturing Co Ltd
Current assignee: Anhui Jiangwei Precision Manufacturing Co Ltd
Priority date: 2015-07-21
Filing date: 2015-07-21
Publication date: 2015-12-16
Anticipated expiration: 2025-07-21

Abstract

The utility model discloses an explosion -proof capacitor, explosion -proof capacitor includes the base, through inner shell and cover that the base lid closed are located the outside shell of inner shell, pass through between inner shell and the shell the base is airtight with vacuole formation (3), shell (2) are gone up and are equipped with becket (9) just along circumference be equipped with a plurality of pressure sensors (4) in cavity (3), be equipped with alarm devices and pressure indication device (6) that mutual electricity is connected on shell (2) outer wall, pressure sensors (4) are passed through becket (9) with pressure indication device (6) electricity is connected, and pressure indication device (6) can follow shell (2) circumference direction in slide on the outer wall of becket (9). This explosion -proof capacitor can be in the use in multi -angle control condenser pressure size, anti -detonation takes place to cause the damage for the electronic components around the condenser.

Description

Noinductive capacitor

Technical field

The utility model relates to capacitor technology field, particularly, relates to a kind of noinductive capacitor.

Background technology

Capacitor is commonly referred to electric capacity, and electric capacity is also called capacitance, refers to the electric charge reserves under given potential difference.Electric charge in the electric field can be stressed and move, and between conductor, had medium, then hindering electric charge moves and make charge accumulation on conductor, causes the accumulation of electric charge to store, and the quantity of electric charge stored then is called electric capacity.

Electric capacity is electronic component common in electronic equipment, is applied to every the aspect such as straight, coupling, bypass, filtering, resonant tank, power conversion, control circuit.

In prior art, capacitor can produce heat energy in long use procedure, and the operational environment being in high temperature as capacitor case is easy to blast.The electronic devices and components of explosion time to surrounding cause more serious damage so that whole circuit disconnect or burn.

Therefore be badly in need of providing a kind of and can prevent the noinductive capacitor occurred that explodes.

Utility model content

The purpose of this utility model is to provide a kind of noinductive capacitor, and this noinductive capacitor can in use pressure size in multi-angle monitoring capacitor, prevents blast from occurring to cause damage to the electronic devices and components around capacitor.

To achieve these goals, the utility model provides a kind of noinductive capacitor, and noinductive capacitor comprises base, the inner casing covered by base and the shell being sheathed on inner casing outside, airtight to form cavity by base between inner casing and shell; Shell is circumferentially provided with becket and is provided with multiple pressure inductor in cavity, outer shell outer wall is provided with the warning device and pressure display unit that are electrically connected to each other; Pressure inductor is electrically connected with pressure display unit by becket, and pressure display unit can slide on the outer wall of becket along shell circumferential direction.

Preferably, multiple pressure inductor is arranged on the inwall of shell.

Preferably, inner casing and shell are cylindric, and an end face is uncovered, and base is seal cover, and seal cover lid is located at the open-mouth of inner casing and shell and welded seal.

Preferably, ultrasonic bonding is welded as.

Preferably, multiple pressure inductor is connected in series with pressure display unit respectively.

Preferably, warning device is audible-visual annunciator.

Preferably, the outer wall on the top of shell and/or inwall are provided with multiple strip groove.

Preferably, the length of strip groove is 0.5-0.6 times of housing diameter.

Preferably, the inwall of shell and/or outer wall are provided with many strip reinforcements.

According to technique scheme, casing is located at inner casing outside by the utility model, and uses base by airtight for the uncovered position of the two; Pressure inductor is electrically connected with pressure display unit as conductor by the annular sheet metal on shell, pressure inductor senses the pressure size in the cavity between shell and inner casing, to be reflected in time on pressure display unit so that Timeliness coverage hidden peril of explosion getting rid of, to prevent internal pressure from increasing further.Due to pressure display unit can on becket outer wall circumferentially direction slide, such convenience is pressure size in multi-angle monitoring capacitor in use, Timeliness coverage solves in time, prevents blast from occurring to cause to the electronic devices and components around capacitor to damage to increase production cost.

Other feature and advantage of the present utility model are described in detail in embodiment part subsequently.

Accompanying drawing explanation

Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for specification, is used from explanation the utility model, but does not form restriction of the present utility model with embodiment one below.In the accompanying drawings:

Fig. 1 is the structural representation of the noinductive capacitor in a kind of execution mode provided according to the utility model;

Fig. 2 is the end view of the noinductive capacitor in a kind of execution mode provided according to the utility model; And

Fig. 3 is the upward view of the noinductive capacitor in a kind of execution mode provided according to the utility model.

Description of reference numerals

1-inner casing 2-shell

3-cavity 4-pressure inductor

5-audible-visual annunciator 6-pressure display unit

7-strip groove 8-strip reinforcement

9-becket 10-seal cover

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the utility model, is not limited to the utility model.

In the utility model, when not doing contrary explanation, the nouns of locality be included in term such as " inside and outside " only represents the orientation of this term under normal service condition, or being commonly called as those skilled in the art's understanding, and should not be considered as the restriction to this term.

See Fig. 1, the utility model provides a kind of noinductive capacitor, and noinductive capacitor comprises base, the inner casing 1 covered by base and the shell 2 being sheathed on inner casing 1 outside, airtight to form cavity 3 by base between inner casing 1 and shell 2; Shell 2 is circumferentially provided with becket 9 and is provided with multiple pressure inductor 4 in cavity 3, shell 2 outer wall is provided with the warning device and pressure display unit 6 that are electrically connected to each other; Pressure inductor 4 is electrically connected with pressure display unit 6 by becket 9, and pressure display unit 6 can slide on the outer wall of becket 9 along shell 2 circumferential direction.

By technique scheme, shell 2 is set in inner casing 1 outside, and uses base by airtight for the uncovered position of the two; Pressure inductor 4 is electrically connected with pressure display unit 6 as conductor by the annular sheet metal on shell 2, pressure inductor 4 senses the pressure size in the cavity 3 between shell 2 and inner casing 1, to be reflected in time on pressure display unit 6 so that Timeliness coverage hidden peril of explosion getting rid of, to prevent internal pressure from increasing further.Due to pressure display unit 6 can on becket 9 outer wall circumferentially direction slide, such convenience is pressure size in multi-angle monitoring capacitor in use, Timeliness coverage solves in time, prevents blast from occurring to cause to the electronic devices and components around capacitor to damage to increase production cost.

In present embodiment, for the ease of immediately detecting the pressure size in capacitor in multiple position simultaneously, prevent undetected test leakage, preferably, multiple pressure inductor 4 is arranged on the inwall of shell 2.

The sealing property of cavity 3 affects the normal detection of noinductive capacitor, sealing property as cavity 3 is not good, pressure in the cavity 3 that pressure inductor 4 induces is less than normal, even if the critical value arriving blast can not Timeliness coverage, finally cause the generation of exploding, in order to avoid the generation of this situation, preferred inner casing 1 and shell 2 are cylindric, and an end face is uncovered, base is seal cover 10, and seal cover 10 covers the open-mouth welded seal that are located at inner casing 1 and shell 2.

In order to save time, ensure the good sealing property after welding while accelerating speed of welding, preferably, being welded as ultrasonic bonding.Adopt this welding machine mode not only with low cost, reduce production cost, and cleanliness without any pollution, can not disfiguring workpiece.

In addition, the pressure size sensed is shown by pressure display unit 6 by pressure inductor 4 in time, in cavity 3, diverse location is due to various ectocine (as moist, high temperature) difference, cause the pressure size of diverse location also not identical, for ease of a point position probing analysis, preferably, multiple pressure inductor 4 is connected in series with pressure display unit 6 respectively.

To produce or noise in environment for use can produce interference to the sense of hearing of tester or user, the dust spread everywhere or steam can affect their vision, cause them can not the hidden peril of explosion of Timeliness coverage capacitor, in order to address this problem, preferably, warning device is audible-visual annunciator 5.

Blast when the pressure size in cavity 3 exceedes critical value, the fragment produced to make blast concentrates injection towards the top of capacitor, four loose can not clash into the impaired inefficacy of other electric elements caused around capacitor, preferably, as shown in Figure 3, the outer wall on the top of shell 2 and/or inwall are provided with multiple strip groove 7.Like this, during pressure increase in cavity 3, easier when extruding the top of shell 2 its bursting is formed breach, now the part of capacitor internal just outwards can be sprayed by this breach, can not affect the electronic component around capacitor.

Before above-mentioned breach is formed, in order to ensure the sealing of cavity 3, when avoiding capacitor to use, top collision produces deformation, and preferably, the length of strip groove 7 is 0.5-0.6 times of shell 2 diameter.

In addition, for increasing the mechanical strength of shell 2, the sidewall of shell 2 when occurring that makes to explode can not break and the top comparatively cracky of shell 2, and preferably, as shown in Figure 2, the inwall of shell 2 and/or outer wall are provided with many strip reinforcements 8.

Below preferred implementation of the present utility model is described by reference to the accompanying drawings in detail; but; the utility model is not limited to the detail in above-mentioned execution mode; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection range of the present utility model.

It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the utility model illustrates no longer separately to various possible compound mode.

In addition, also can carry out combination in any between various different execution mode of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.

Claims

1. a noinductive capacitor, it is characterized in that, described noinductive capacitor comprises base, the inner casing (1) covered by described base and be sheathed on the outside shell (2) of described inner casing (1), passes through described base airtight to form cavity (3) between described inner casing (1) and shell (2); Described shell (2) be circumferentially provided with becket (9) and be provided with multiple pressure inductor (4) in described cavity (3), described shell (2) outer wall is provided with the warning device and pressure display unit (6) that are electrically connected to each other; Described pressure inductor (4) is electrically connected with described pressure display unit (6) by described becket (9), and described pressure display unit (6) can slide on the outer wall of described becket (9) along described shell (2) circumferential direction.

2. noinductive capacitor according to claim 1, is characterized in that, multiple described pressure inductor (4) is arranged on the inwall of described shell (2).

3. noinductive capacitor according to claim 2, it is characterized in that, described inner casing (1) and shell (2) are cylindric, and an end face is uncovered, described base is seal cover (10), and described seal cover (10) covers the open-mouth welded seal that are located at described inner casing (1) and shell (2).

4. noinductive capacitor according to claim 3, is characterized in that, described in be welded as ultrasonic bonding.

5. noinductive capacitor according to claim 4, is characterized in that, described multiple pressure inductor (4) is connected in series with pressure display unit (6) respectively.

6. noinductive capacitor according to claim 5, is characterized in that, described warning device is audible-visual annunciator (5).

7. noinductive capacitor according to claim 6, is characterized in that, the outer wall on the top of described shell (2) and/or inwall are provided with multiple strip groove (7).

8. noinductive capacitor according to claim 7, is characterized in that, the length of described strip groove (7) is 0.5-0.6 times of described shell (2) diameter.

9. according to the noinductive capacitor in claim 1-8 described in any one, it is characterized in that, the inwall of described shell (2) and/or outer wall are provided with many strip reinforcements (8).