CN202991711U - Mechanical stop type pressure overload protection structure for piston type energy accumulator - Google Patents
Mechanical stop type pressure overload protection structure for piston type energy accumulator Download PDFInfo
- Publication number
- CN202991711U CN202991711U CN 201220682515 CN201220682515U CN202991711U CN 202991711 U CN202991711 U CN 202991711U CN 201220682515 CN201220682515 CN 201220682515 CN 201220682515 U CN201220682515 U CN 201220682515U CN 202991711 U CN202991711 U CN 202991711U
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- piston
- overload protection
- accumulator
- protection structure
- pressure overload
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Abstract
The utility model discloses a mechanical stop type pressure overload protection structure for a piston type energy accumulator, which comprises an energy accumulator tank body, and a piston is arranged in the energy accumulator tank body, wherein the piston divides the interior of the tank body into an upper part space and a lower part space; high-pressure gas is filled in the upper part space, and the lower part space is connected with an external high-pressure liquid device; and the structure further comprises a spacing component arranged on the inner wall of the upper part space. The pressure overload protection structure can solve the technical problem that the high-pressure gas inside the energy accumulator is further compressed and results in pressure overload under extreme conditions.
Description
Technical field
The utility model relates to a kind of piston accumulator field, especially a kind of piston accumulator machinery stop bit formula pressure overload protection structure.
Background technique
At present, hydraulic system is controlled the main electronic control that adopts with the pressure overload of piston accumulator, the modes such as relief valve control, electronic control mode mainly adopts: when the over proof limiting value of accumulator pressurization, system judges according to the pressure transducer value of feedback, as overload situations occurs, stop the motor running, stop the accumulator pressurization; The relief valve control mode mainly adopts: when the over proof limiting value of accumulator pressurization, relief valve is opened under this pressure, automatically overload pressure is discharged, thereby realizes overvoltage protection.But this dual mode all exists easy inefficacy, poor anti-interference, the high deficiency of expense, in case lost efficacy, very easily causes the security risks such as accumulator overload explosion.
The model utility content
For existing the problems referred to above that exist, a kind of piston accumulator machinery stop bit formula pressure overload protection structure now is provided, prevent accumulator under extreme case, internal high pressure gas is further compressed, causes the technical problem of pressure overload.
Concrete technological scheme is as follows:
A kind of piston accumulator machinery stop bit formula pressure overload protection structure, comprise the accumulator tank body, be provided with piston in described accumulator tank body, wherein, described piston is separated into upper space and lower space with described accumulator tank interior, be provided with pressurized gas in described upper space, described lower space is connected with the external high pressure liquid device; Also comprise limit position part, described limit position part is arranged on the inwall of described upper space.
Above-mentioned piston accumulator machinery stop bit formula pressure overload protection structure, wherein, described limit position part is arranged on the maximum height position that described piston rises.
Above-mentioned piston accumulator machinery stop bit formula pressure overload protection structure, wherein, the inwall of described limit position part and described upper space forms ladder-type structure.
Above-mentioned piston accumulator machinery stop bit formula pressure overload protection structure, wherein, the inwall of described limit position part and described upper space is formed as one.
Above-mentioned piston accumulator machinery stop bit formula pressure overload protection structure, wherein, the surface of contact of described piston and described accumulator tank inner surface is provided with sealed member.
The beneficial effect of technique scheme is:
A kind of piston accumulator machinery stop bit formula pressure overload protection structure in the utility model; only relate to the machining of enclosure interior when arranging; do not affect other any assembly of accumulator; do not need to increase extra electronic control system; do not need to set up independent relief valve, saved the hydraulic system input cost.Simultaneously, owing to not existing electronic control to lose efficacy, or other peripheral components indirect risk of losing efficacy and causing, therefore simple and easy to do, safe and reliable.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is a kind of piston accumulator machinery stop bit formula pressure overload protection structure structural representation of the present utility model.
Fig. 2 is the structural representation that of the present utility model kind of piston accumulator machinery stop bit formula pressure overload protection structure realizes overload protection.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, but not as restriction of the present utility model.
A kind of piston accumulator machinery stop bit formula pressure overload protection structure, comprise accumulator tank body 1, be provided with piston 2 in accumulator tank body 1, wherein, piston 2 becomes upper space 3 and lower space 4 with accumulator tank body 1 interior separation, be filled with pressurized gas in upper space 3, lower space 4 is connected with external high pressure liquid device (not indicating in figure), and lower space 4 is filled with highly pressurised liquid;
On the such scheme basis, the utility model also comprises limit position part 5, and limit position part 5 is arranged on the inwall of upper space 3.
In an embodiment of the present utility model, piston 2 is provided with a plurality of sealed members 21 with accumulator tank body 1 internal surface surface of contact, sealing parts 21 comprise seal groove 210, sealing groove 210 is placed on the surface of contact of piston 2 and accumulator tank body 1 inwall, is provided with sealed member 211 in sealing groove 210.In enforcement, sealing groove 210 is a circular groove.
In an embodiment of the present utility model, limit position part 5 is arranged on that piston 2 rises maximum height position 22.
Particularly, in an embodiment of the present utility model, limit position part 5 forms ladder-type structure with the inwall of upper space 3.
In one embodiment of the invention, limit position part 5 is formed as one with the inwall of upper space 3, in enforcement, when structure accumulator tank body 1, reserve enough machining allowance in the blank of accumulation of energy tank body 1, use numerical control machine tool corresponding regional turning in the inwall of this accumulator tank body 1 to go out suitable step, thereby form the ladder-type structure that needs.
In enforcement, limit position part by the ladder-type structure of setting in accumulator tank body 1, when system under abnormal conditions, when constantly accumulator being carried out persistent pressure, travel displacement by these limit position part 5 limited piston 2, thereby prevent accumulator under extreme case, upper space 3 internal high pressure gases are further compressed, cause the problem of pressure overload.
When this limit position part 5 is set, need to consider according to the combined factors such as pressure that accumulator rating plate limits pressure, limit leakage rate, piston stroke and accumulator shell material can bear.
The above is only the utility model preferred embodiment; not thereby limit claim of the present utility model; so the equivalent structure that all utilization the utility model specifications and diagramatic content have been done changes, and all is included in protection domain of the present utility model.
Claims (5)
1. piston accumulator machinery stop bit formula pressure overload protection structure, comprise the accumulator tank body, be provided with piston in described accumulator tank body, it is characterized in that, described piston is separated into upper space and lower space with described accumulator tank interior, be provided with pressurized gas in described upper space, described lower space is connected with the external high pressure liquid device; Also comprise limit position part, described limit position part is arranged on the inwall of described upper space.
2. piston accumulator machinery stop bit formula pressure overload protection structure according to claim 1, is characterized in that, described limit position part is arranged on the maximum height position that described piston rises.
3. piston accumulator machinery stop bit formula pressure overload protection structure according to claim 1 and 2, is characterized in that, the inwall of described limit position part and described upper space forms ladder-type structure.
4. piston accumulator machinery stop bit formula pressure overload protection structure according to claim 3, is characterized in that, the inwall of described limit position part and described upper space is formed as one.
5. piston accumulator machinery stop bit formula pressure overload protection structure according to claim 1, is characterized in that, the surface of contact of described piston and described accumulator tank inner surface is provided with sealed member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220682515 CN202991711U (en) | 2012-12-11 | 2012-12-11 | Mechanical stop type pressure overload protection structure for piston type energy accumulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220682515 CN202991711U (en) | 2012-12-11 | 2012-12-11 | Mechanical stop type pressure overload protection structure for piston type energy accumulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202991711U true CN202991711U (en) | 2013-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220682515 Expired - Fee Related CN202991711U (en) | 2012-12-11 | 2012-12-11 | Mechanical stop type pressure overload protection structure for piston type energy accumulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202991711U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867536A (en) * | 2012-12-11 | 2014-06-18 | 上海上汽马瑞利动力总成有限公司 | Mechanical stop type pressure overload protection structure of piston accumulator |
-
2012
- 2012-12-11 CN CN 201220682515 patent/CN202991711U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867536A (en) * | 2012-12-11 | 2014-06-18 | 上海上汽马瑞利动力总成有限公司 | Mechanical stop type pressure overload protection structure of piston accumulator |
| CN103867536B (en) * | 2012-12-11 | 2017-03-01 | 上海上汽马瑞利动力总成有限公司 | A kind of piston accumulator machinery stop bit formula pressure overload protection structure |
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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: 20130612 Termination date: 20211211 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |