CN202009185U - Valve locking device for middle-positioned switch device - Google Patents
Valve locking device for middle-positioned switch device Download PDFInfo
- Publication number
- CN202009185U CN202009185U CN2011200581035U CN201120058103U CN202009185U CN 202009185 U CN202009185 U CN 202009185U CN 2011200581035 U CN2011200581035 U CN 2011200581035U CN 201120058103 U CN201120058103 U CN 201120058103U CN 202009185 U CN202009185 U CN 202009185U
- Authority
- CN
- China
- Prior art keywords
- lever
- connecting lever
- support
- crank arm
- main support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Preventing Unauthorised Actuation Of Valves (AREA)
Abstract
The utility model relates to a valve locking device for a middle-positioned switch device, which is mainly used for a middle-positioned switch cabinet and comprises a main support, a crank arm, a crank arm support, a lever and a spring, wherein the crank arm is arranged on the crank arm support, the crank arm support is arranged on the main support, the tail end of the crank arm is connected with the lever, a connecting position of the crank arm and the lever is connected with the spring, the other end of the spring is connected with the main support, and the lever is arranged on the main support. The valve locking device for the middle-positioned switch device has the advantages that the structure is reasonably designed, the valve can not be optionally opened after switching off, thus the phenomenon of entering into a charged compartment by mistake is effectively prevented, and the operation safety is improved.
Description
Technical field
The utility model relates to a kind of valve locking device that is used for the middle switchgear, and it is mainly used in intermediate switchgear cabinet.
Background technology
According to national standard and professional standard, high voltage switchgear must possess the perfect function that prevents misoperation reliably, i.e. " five anti-" specification requirement comprises preventing on-load push-and-pull circuit breaker cart, prevent mistake deciliter circuit breaker, preventing to close when earthed switch is in make position and close circuit breaker, prevent the mistakenly entering into charged compartment, prevent the chain function at charged mistiming splice grafting ground switch.Particularly, prevent that this point of mistakenly entering into charged compartment is particularly important, because there is the high pressure up to 12KV the inside to middle moving-out type high voltage switchgear, after handcart shifts out equipment, valve must guarantee to close and can not at will open, and just can separate locking and unlocking device when handcart advances once more, and valve could be opened.Do not have this design in the prior art at present, valve can be manually opened, increased danger.
The utility model content
Technical problem to be solved in the utility model is to overcome existing above-mentioned deficiency in the prior art, and a kind of reasonable in design is provided, must be by the valve locking device that is used for the middle switchgear of handcart unlatching.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of valve locking device that is used for the middle switchgear, comprise main support, it is characterized in that: it also comprises connecting lever, connecting lever support, lever and spring, connecting lever is installed on the connecting lever support, and the connecting lever support is installed on the main support; The end of connecting lever is connected with lever, and the junction of connecting lever and lever is connected with spring, and the other end of spring is connected with main support; Lever is installed on the main support.
The junction of connecting lever described in the utility model and connecting lever support is provided with pivot pin, and connecting lever can pivot pin be that axle rotates.
The utility model compared with prior art has following positive effect: reasonable in design, and after closing, just can not arbitrarily open at valve, effectively prevent the mistakenly entering into charged compartment, improved the fail safe of operation.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is Fig. 1 plan structure schematic diagram.
Among the figure: 1 main support, 2 connecting levers, 3 connecting lever supports, 4 levers, 5 springs, 6 pivot pins.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and by embodiment.
Embodiment:
Referring to Fig. 1～Fig. 2, present embodiment comprises main support 1, connecting lever 2, connecting lever support 3, lever 4 and spring 5, and wherein connecting lever 2 is installed on the connecting lever support 3, and connecting lever support 3 is installed on the main support 1; The end of connecting lever 2 is connected with lever 4, and the junction of connecting lever 2 and lever 4 is connected with spring 5, and the other end of spring 5 is connected with main support 1; Lever 4 is installed on the main support 1.
In the present embodiment, connecting lever 2 is provided with pivot pin 6 with the junction of connecting lever support 3, and connecting lever 2 can pivot pin 6 be that axle rotates.
During use, the utility model is installed on the outer valve of charged compartment, when the promotion handcart enters charged compartment, handcart promotes connecting lever 2, and connecting lever 2 rotates along pivot pin 6, removes the position, connecting lever 2 drives lever 4 compression springs 5 simultaneously, and this moment, handcart entered charged compartment work; When handcart left charged compartment, under the effect of spring 5, lever 4 drove connecting lever 2 and resets, and the outer valve of charged compartment can not arbitrarily be opened, and prevented that the staff from opening valve with hand and entering charged compartment, had improved fail safe.
In addition, need to prove, specific embodiment described in this specification, as long as the undeclared concrete shape and size of its part, then this part can be Any shape and the size that adapts with its structure; Simultaneously, the part title of getting also can be different.Allly conceive equivalence or the simple change that described structure, feature and principle are done, be included in the protection range of the utility model patent according to the utility model patent.
Claims (2)
1. a valve locking device that is used for the middle switchgear comprises main support, it is characterized in that: it also comprises connecting lever, connecting lever support, lever and spring, and connecting lever is installed on the connecting lever support, and the connecting lever support is installed on the main support; The end of connecting lever is connected with lever, and the junction of connecting lever and lever is connected with spring, and the other end of spring is connected with main support; Lever is installed on the main support.
2. the valve locking device that is used for the middle switchgear according to claim 1 is characterized in that: the junction of described connecting lever and connecting lever support is provided with pivot pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200581035U CN202009185U (en) | 2011-03-08 | 2011-03-08 | Valve locking device for middle-positioned switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200581035U CN202009185U (en) | 2011-03-08 | 2011-03-08 | Valve locking device for middle-positioned switch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202009185U true CN202009185U (en) | 2011-10-12 |
Family
ID=44750842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200581035U Expired - Fee Related CN202009185U (en) | 2011-03-08 | 2011-03-08 | Valve locking device for middle-positioned switch device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202009185U (en) |
-
2011
- 2011-03-08 CN CN2011200581035U patent/CN202009185U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111012 Termination date: 20170308 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |