CN2042548U - On-line adjuster for safety valve - Google Patents
On-line adjuster for safety valve Download PDFInfo
- Publication number
- CN2042548U CN2042548U CN 88219324 CN88219324U CN2042548U CN 2042548 U CN2042548 U CN 2042548U CN 88219324 CN88219324 CN 88219324 CN 88219324 U CN88219324 U CN 88219324U CN 2042548 U CN2042548 U CN 2042548U
- Authority
- CN
- China
- Prior art keywords
- pressure
- safety valve
- seal ring
- line adjuster
- boiler safety
- 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 - Lifetime
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Abstract
The utility model discloses a pressure on-line adjuster for boiler safety valves. The pressure on-line adjuster for boiler safety valves causes the valve rod of a boiler safety valve to generate axial force to evoke a spring to deform by pressure oil. Therefore, the jumping pressure and the reseating pressure are measured. The pressure on-line adjuster for boiler safety valves is composed of a cylinder cap, a piston rod, a pressure cylinder, a sealing ring, a piston rod and a safety valve connecting member. The pressure on-line adjuster for boiler safety valves is used for the on-line adjustment of a spring safety valve. The pressure on-line adjuster for boiler safety valves can replace the traditional heat adjusting method. Therefore, the pressure on-line adjuster for boiler safety valves saves time, improves steam yield, reduces energy consumption, and increases the operation reliability of equipment. The pressure on-line adjuster for boiler safety valves is used on industrial devices, and the effect is good.
Description
The utility model relates to boiler safety valve pressure debugging category, and boiler safety valve is that the pressure in the boiler is risen to safety valve jumping up by certain rate of pressure rise by the traditional adjustment method of China, reduces the boiler internal pressure then and makes safety valve blowback.The pressure of safety valve jumping up and time seat is the release pressure and the Reseating pressure of a safety valve of safety valve this moment.As above-mentioned pressure value is above legal numerical value at this moment, then the boiler internal pressure also need drop to safety pressure, adjusts the spring force of safety valve then, after the adjustment, the boiler internal pressure is boosted once more, and so reciprocal several is until the coincidence method definite value, this method claims hot debugging method, also claims self pressurization.That this method exists is time-consuming, product-free output in the limber up period that boosts, and consumes energy and impairs the shortcoming of device security.
The utility model also can be applicable to the safety valve pressure debugging of other pressurized container.
The utility model working principle, makes described safety valve spring be subjected to a spot of compression and makes its take-off with a kind of external force under working pressure based on boiler safety valve, replaces above-mentioned traditional debugging method, has therefore thoroughly broken away from the shortcoming of traditional debugging method.This technology is not seen at home and is used and report.Though in Britain the device of similar use external force is also arranged, it has utilized secondary meter record debug results, and it is more complicated than this device, and validity is poorer than this device.
The utility model is to the technique device of Direct spring loaded safety valve with the pressure debugging under the boiler nominal situation.It mainly is made up of Fig. 1 cylinder cap (1), piston rod (2), pressure cylinder (3), seal ring (4) and piston rod and safety valve coupling (5).
The utility model pressure fluid can be a pressure oil
As shown in Figure 2 this device is loaded on safety valve (9) top, connects pressure cylinder (3) inlet union.When with hand pressing oil pressure pump (11), pressure oil enters in the pressure cylinder (3) by filler opening, act on piston rod (2) and on valve rod (7), produced axial force, make spring (8) distortion, when axial force is equal to or greater than safety valve under nominal situation during with the axial force of safety valve setting pressure difference value, safety valve is with regard to take-off.The pressure of oil pressure gauge (10) indication is called corresponding release pressure, opens the scavenger valve of oil pressure pump (11) subsequently at leisure, the oil pressure pump outlet pressure is returned reduce to safety valve to close, and oil pressure gauge (10) is depicted as corresponding Reseating pressure of a safety valve.
As Fig. 3 is assembly cylinder cap (1), piston rod (2).Fig. 4 is the detail drawing of the coupling (5) of pressure cylinder (3), piston rod and safety valve.For prevent pressure cylinder (3) internal pressure oil not outward seepage with the cylinder that keep-ups pressure (3) internal pressure, have the groove of seal ring and seal ring (4) is housed in the bottom of pressure cylinder (3), the bottom also has the pressure oil filler opening, same piston rod (2) top has the groove of seal ring and seal ring is housed, its underpart is passed pressure cylinder and is had pin-and-hole, utilize the coupling (5) that pin is connected with safety valve (9) to link to each other, and cylinder cap (1) bottom is processed into screw thread and is linked to each other with pressure cylinder (3).
Use-case
With this device our factory donkey boiler H9101 saturated vapour safety valve 091PSV068 is carried out the heat debugging, release pressure is 46.5 kilograms every square centimeter as a result, Reseating pressure of a safety valve is 44.0 kilograms every square centimeter, the release pressure calculated value that utilizes this device to record is 45.9 kilograms every square centimeter, and the Reseating pressure of a safety valve calculated value is 44.9 kilograms every square centimeter.Be that the release pressure error amount is 1.2%, the Reseating pressure of a safety valve error is 2%.
In January, 1988, utilize this device to carry out a technical service for raising sub-petro-chemical corporation olefin plant, band is pressed in line and has debugged five safety valves, found to have a safety valve (E-PSV-420A), the subnormal working pressure of Reseating pressure of a safety valve, thereby safety valve can't return seat after the take-off under nominal situation, forces back seat by external force afterwards, kept ordinary production.
Claims (4)
1, being used for the boiler safety valve on-line debugging at present is that employing self pressurization realizes, also there is the impressed pressure of use to make safety valve spring compression carrying out on-line debugging such as the not graceful Nat of Britain (FURMANITE) adopt secondary meter to write down tune-up data, the utility model feature be one under nominal situation, Direct spring loaded safety valve carried out outside the technique device of pressurization debugging, it is to pressurize outward with pressure oil to make the safety valve spring compression, directly uses pressure gauge record security valve release pressure and Reseating pressure of a safety valve.It is by cylinder cap, piston rod, and pressure cylinder, seal ring and coupling are formed.
2, technique device as claimed in claim 1 is characterized in that the bottom of pressure cylinder has the groove of seal ring, and seal ring is housed that the bottom also has the pressure fluid import.
3, technique device as claimed in claim 1 is characterized in that piston rod top has the groove of seal ring and seal ring is housed, and the bottom has pin-and-hole, utilizes pin to link coupling.
4, technique device as claimed in claim 1 is characterized in that the cylinder cap bottom is processed as screw thread and links to each other with pressure cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88219324 CN2042548U (en) | 1988-10-07 | 1988-10-07 | On-line adjuster for safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88219324 CN2042548U (en) | 1988-10-07 | 1988-10-07 | On-line adjuster for safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2042548U true CN2042548U (en) | 1989-08-09 |
Family
ID=4851680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88219324 Expired - Lifetime CN2042548U (en) | 1988-10-07 | 1988-10-07 | On-line adjuster for safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2042548U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102147623A (en) * | 2011-05-29 | 2011-08-10 | 杭州哲达科技股份有限公司 | Debugging method for static balance valve of hydraulic system |
-
1988
- 1988-10-07 CN CN 88219324 patent/CN2042548U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102147623A (en) * | 2011-05-29 | 2011-08-10 | 杭州哲达科技股份有限公司 | Debugging method for static balance valve of hydraulic system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |