CN201706025U - Spring failure prevention device of internal fall lift type spring safety valve - Google Patents
Spring failure prevention device of internal fall lift type spring safety valve Download PDFInfo
- Publication number
- CN201706025U CN201706025U CN2010202354953U CN201020235495U CN201706025U CN 201706025 U CN201706025 U CN 201706025U CN 2010202354953 U CN2010202354953 U CN 2010202354953U CN 201020235495 U CN201020235495 U CN 201020235495U CN 201706025 U CN201706025 U CN 201706025U
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- spring
- safety valve
- spring holder
- holder
- prevention device
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model relates to a spring failure prevention device of an internal fall lift type spring safety valve, which is mainly applied to mobile pressure containers such as liquefied gas tankers and the like. The spring failure prevention device is structurally characterized by comprising a valve body, a spring and a spring carrier, the spring carrier includes an upper spring carrier and a lower spring carrier which respectively support two end faces of the spring, and a sleeve completely sealing the spring is sleeved between the external diameters of the upper spring carrier and the lower spring carrier. The spring failure prevention device can effectively prevent spring corrosion failure, prolongs the service life of the safety valve, is low in cost and simple and convenient in installation, and is easy to realize.
Description
Technical field
The present invention relates to a kind of anti-disabling device of spring of safety valve, relate in particular to a kind of anti-disabling device of spring of built-in complete opening type spring safety valve, be mainly used on the transportable pressure vessel such as Railway Tank Cars for Liquefied Gas.
Background technique
Built-in complete opening type spring safety valve is an important safety installations on the transportable pressure vessels such as Railway Tank Cars for Liquefied Gas.For preventing its tank car in transportation process, occur clashing into when overturning waits fortuitous event or damaging safety valve, safety valve adopts " built-in " structure, and promptly the loading spring of safety valve is positioned at the below of product valve seat.Simultaneously, comprise that the most of structure of device of loading spring all is installed on pressurized tank interior such as tank car, exposing after it is installed is highly very little, as shown in Figure 1.
Liquid gas belongs to inflammable, explosive medium.When having special medias such as more objectionable impurities or liquid chlorine in these media, its medium just has very strong corrosivity.The safety valve loading spring is positioned at the tank interior of tank car, directly contacts with medium.For this reason, guarantee the safety valve reliable performance, prevent loading spring early failue or corrosion, particularly important.At present, to the loading spring of built-in complete opening type spring safety valve.Corrosion protections etc. prevent that the protection of early failue from having two aspects: one; be the spring outer surface to be carried out surface treatments such as chromium plating, painting, this is a traditional method for many years, and the not good limitation of this surface treatment effect is; through after a while, coming off of the coat of metal or painting layer must appear.Its anti-early failue and corrosion-resistant effect are had a greatly reduced quality.Its two, be to adopt rupture disk to be installed in safety valve import one end, form tandem compound formula safety relief device.This " tandem compound formula ", though on structure, can contact with the direct of medium by isolation safe valve loading spring, but the tandem compound formula structure more complicated of rupture disk is installed, not only need clamp holder evenly to compress, the pressurized cylinder body and the pressure parts such as pressure gauge and stop valve that also will have sealing, as shown in Figure 2.And, the early failue that inconvenience is a rupture disk itself often appears in the use, and promptly breaking or leaking may appear in rupture disk, the pressure tabular value on the running check pressurized cylinder body, when the pressure tabular value is zero, illustrates that rupture disk is working properly harmless; When pressure gauge shows force value, illustrate that rupture disk leaks or breaks.In case this situation occurs, need in time tandem compound discharge of safety valve device integral body to be dismantled from the tank body of tank car, change its rupture disk.Installation or replacing are not only time-consuming, and the price of rupture disk own is also high.
Summary of the invention
The present invention is directed to above-mentioned problems of the prior art, through developing meticulously and doing painstaking research, a kind of anti-disabling device of spring of built-in complete opening type spring safety valve is provided, solved the loading spring weak point in working life of safety valve, the problem of perishable inefficacy in the prior art, and cost of the present invention is low, simple installation, easily capable.
Technological scheme of the present invention is as follows:
Comprise valve body, spring and latch bracket, latch bracket comprises upper spring holder and lower spring holder, and upper spring holder and lower spring holder be the both ends of the surface of supported spring respectively, are set with the sleeve that spring all is closed between the external diameter of upper spring holder and lower spring holder.
Fixedlying connected with the lower spring holder by jackscrew in the lower end of described sleeve, leaves the displacement gap between the top of the upper-end surface of sleeve and upper spring holder.
Described upper spring holder and flange body are conjuncted.
Each joint of described sleeve and valve body is equipped with sealing configuration.
Described sealing configuration is made of O shape rubber seal and sealing notch.
Advantageous effect of the present invention is as follows:
1, owing to be provided with the sleeve that spring all is closed, stopped contacting of spring and medium, so can effectively prevent the spring corrosion failure, prolonged the working life of safety valve, and cost is low, simple installation, easily capable.
2, owing to leave the displacement gap between the top of the upper-end surface of sleeve and upper spring holder,, do not influence the emission performance of safety valve so guaranteed safety valve playing skip displacement and opening height entirely when superpressure.
3, because each joint of sleeve and valve body is equipped with sealing configuration, thus the loading spring of safety valve and its medium are really isolated, and, can reach the ideal design that its loading spring is prevented early failue, effect is remarkable, and is safe and reliable.
Description of drawings
Fig. 1 is a surface structure schematic representation after the installation of built-in complete opening type spring safety valve.
Fig. 2 is the structural representation that the built-in complete opening type spring safety valve of explosion skin is installed in the prior art.
Fig. 3 is a structural representation of the present invention.
Among the figure, 1, safety valve, 2, tank body, 3, pressure gauge, 4, stop valve, 5, the pressurized cylinder body, 6, the explosion skin, 7, clamp holder, 8, the upper spring holder, 9, sleeve, 10, O shape rubber seal, 11, jackscrew, 12, the lower spring holder, L, displacement gap.
Embodiment
Below, with reference to accompanying drawing, in conjunction with the embodiments the present invention is described in more detail.
As shown in Figure 3, comprise valve body, spring and latch bracket, latch bracket comprises upper spring holder 8 and lower spring holder 12, and upper spring holder 8 is conjuncted with flange body, and upper spring holder 8 and lower spring holder 12 be the both ends of the surface of supported spring respectively; Be set with the sleeve 9 of the stainless steel that spring all is closed between the external diameter of upper spring holder 8 and lower spring holder 12; Fixedlying connected with lower spring holder 12 by jackscrew 11 in the lower end of sleeve 9, leaves the displacement gap L between the top of the upper-end surface of sleeve 9 and upper spring holder 8; Each joint of sleeve 9 and valve body is equipped with the sealing configuration that is made of O shape rubber seal 10 and sealing notch.
The comparative illustration of the present invention and prior art, as following table:
As seen from the above table, the present invention can effectively prevent the spring corrosion failure, has prolonged the working life of safety valve, and cost is low, simple installation, easily capable.
Protection scope of the present invention is as the criterion with claims, is not subjected to the restriction of specific embodiment.
Claims (5)
1. the spring of a built-in complete opening type spring safety valve is prevented disabling device, comprise valve body, spring and latch bracket, latch bracket comprises upper spring holder (8) and lower spring holder (12), upper spring holder (8) and lower spring holder (12) be the both ends of the surface of supported spring respectively, it is characterized in that being set with the sleeve (9) that spring all is closed between the external diameter of upper spring holder (8) and lower spring holder (12).
2. the spring of built-in complete opening type spring safety valve according to claim 1 is prevented disabling device, fixedlying connected with lower spring holder (12) by jackscrew (11) in the lower end that it is characterized in that described sleeve (9), leaves displacement gap (L) between the top of the upper-end surface of sleeve (9) and upper spring holder (8).
3. the spring of built-in complete opening type spring safety valve according to claim 1 and 2 is prevented disabling device, it is characterized in that described upper spring holder (8) and flange body are conjuncted.
4. the spring of built-in complete opening type spring safety valve according to claim 1 is prevented disabling device, it is characterized in that each joint of described sleeve (9) and valve body is equipped with sealing configuration.
5. the spring of built-in complete opening type spring safety valve according to claim 4 is prevented disabling device, it is characterized in that described sealing configuration is made of O shape rubber seal (10) and sealing notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202354953U CN201706025U (en) | 2010-06-24 | 2010-06-24 | Spring failure prevention device of internal fall lift type spring safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202354953U CN201706025U (en) | 2010-06-24 | 2010-06-24 | Spring failure prevention device of internal fall lift type spring safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201706025U true CN201706025U (en) | 2011-01-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202354953U Expired - Fee Related CN201706025U (en) | 2010-06-24 | 2010-06-24 | Spring failure prevention device of internal fall lift type spring safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201706025U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114269A (en) * | 2018-10-23 | 2019-01-01 | 湖南机油泵股份有限公司 | A kind of compact-sized safety valve and lubricating oil pump |
-
2010
- 2010-06-24 CN CN2010202354953U patent/CN201706025U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114269A (en) * | 2018-10-23 | 2019-01-01 | 湖南机油泵股份有限公司 | A kind of compact-sized safety valve and lubricating oil pump |
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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: 20110112 Termination date: 20140624 |
|
| EXPY | Termination of patent right or utility model |