CN204882059U - Pipeline under pressure relief valve on -line measuring device - Google Patents
Pipeline under pressure relief valve on -line measuring device Download PDFInfo
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- CN204882059U CN204882059U CN201520603812.5U CN201520603812U CN204882059U CN 204882059 U CN204882059 U CN 204882059U CN 201520603812 U CN201520603812 U CN 201520603812U CN 204882059 U CN204882059 U CN 204882059U
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- pipeline
- valve
- drain
- pressure
- safety valve
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Abstract
The utility model discloses a pipeline under pressure relief valve on -line measuring device, pipeline under pressure goes up the inconvenient problem of relief valve on -line measuring among the solution prior art. A pipeline under pressure relief valve on -line measuring device, includes pipeline under pressure, relief valve and computer, and the last intercommunication of pipeline under pressure has the second pipeline, and according to being equipped with second ball valve and relief valve, the intercommunication has the third pipeline on the second pipeline between relief valve and the second ball valve on the second pipeline, and the third pipeline still communicates has the gas bomb, still be equipped with first stop valve on the third pipeline, the third pipeline between first stop valve and the gas bomb is equipped with the drain, and the drain is also by the valve control switching, be equipped with the second signal inductor on the third pipeline between drain and the gas bomb, be equipped with the relief pressure valve on the third pipeline between second signal inductor and the drain the drain also passes through the valve control, still be equipped with the check valve on the third pipeline between drain and the relief pressure valve, still be equipped with the the first signal inductor on the second pipeline.
Description
Technical field
The utility model safety valve for pressure pipeline field, is specifically related to a kind of safety valve for pressure pipeline on-line measuring device.
Background technology
The principle of work of safety valve is when not by the unlatching, the closing motion that realize safety valve when external force, is rely on the change of the pressure medium of its entrance point and initial tension of spring automatically open to make spool and close.When pressure medium be elevated to lifting force larger than initial tension of spring time, spool overcomes initial tension of spring and automatically opens, and unnecessary medium of releasing, makes interior drops, and again due to the effect of spring force, when internal drop is to safety value, spool is closed automatically, stopping of releasing.
Around this principle, when now internal security valve on-line measurement at present or adjustment, outside provides an additional force upwards, then when the summation of pressure medium and this additional force has just overcome initial tension of spring, spool equally also can be opened, even under off-line (also known as the cold conditions) condition not having medium effect, when overcoming initial tension of spring by outside additional force separately, spool also can be opened.The condition that spool is opened is FT=FW+PL × S
, wherein: FT-initial tension of spring, FW-outside additional force, PL-medium applied pressure, S-sealing surface of safety valve area.Then set-pressure P is: P=PL+FW/S; When cold conditions, P=FW/S.
But in the actual on-line checkingi of safety valve, this principle is difficult to use, because:
(1) the very difficult guarantee of the safety valve spool lifting surface area of the same producer of same model is completely the same;
(2) model etc. of on-line checkingi safety valve is not exclusively the same again, and safety valve spool lifting surface area is also just different;
(3) opening pressure required by site safety valve is also incomplete same;
(4) make to add additional external force, must increase external force mechanisms, clamping bothers, and scene is not easy to operate;
(5) safety valve spool area is difficult to determine;
(6) the on-line checkingi time is long;
(7) checkout equipment cost is high.
Summary of the invention
The purpose of this utility model is to provide a kind of safety valve for pressure pipeline on-line measuring device, have facilitate on-line checkingi, detection time short, the advantage that detects can be carried out while not stopping gas in pipelines transporting, solve the problems of the prior art.
To achieve these goals, the technical scheme taked of the utility model is as follows:
A kind of safety valve for pressure pipeline on-line measuring device, comprise pressure pipeline, safety valve and computing machine, described pressure pipeline is communicated with second pipe, according to being provided with the second ball valve and safety valve on second pipe, second pipe between described safety valve and the second ball valve is communicated with the 3rd pipeline, described 3rd pipeline is also communicated with gas bomb; Described 3rd pipeline is also provided with the first stop valve, and the 3rd pipeline between described first stop valve and gas bomb is provided with drain, and described drain is also by Valve controlling opening and closing; The 3rd pipeline between described drain and gas bomb is provided with secondary signal inductor; The 3rd pipeline between described secondary signal inductor and drain is provided with drain described in reduction valve and also passes through Valve controlling; The 3rd pipeline between described drain and reduction valve is also provided with retaining valve; Second pipe between described safety valve and the second ball valve is also provided with the first signal inductor; First signal inductor and secondary signal inductor are used for induction pressure, temperature signal, and by Signal transmissions to computing machine.
Further, described pressure pipeline is also communicated with the first pipeline, described first pipeline is provided with successively choke stop evacuation valve and the first ball valve.
Further, also comprise the 4th pipeline, the first pipeline between described first ball valve and choke stop evacuation valve also passes through the 4th pipeline communication with drain, and described 4th pipeline is provided with the second stop valve.
The specification of described 3rd pipeline and the 4th pipeline is DN5 ~ DN10.
The utility model compared with prior art, has following beneficial effect:
(1) structure of the present utility model, makes it possible to the on-line checkingi realizing safety valve very easily.
(2) in the utility model, be provided with the first pipeline, when making operating pressure pipeline while detecting safety valve performance, the problem that the pressure of pressure pipeline there will not be pressure excessive at short notice can be guaranteed.
(3) the utility model is provided with the 4th pipeline, makes the first manifold pressure also can by drain emptying, and security performance increases further., security performance increases further.
(4) the utility model structure is simple, with low cost, is applicable to large-scale promotion and uses.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is safety valve on-line checkingi open and close Airtightness Curve figure.
Wherein, Reference numeral title is as follows: 1-pressure pipeline, 2-first pipeline, 3-second pipe, 4-the 3rd pipeline, 5-safety valve, 6-second ball valve, 7-first signal inductor, 8-secondary signal inductor, 9-gas bomb, 10-first stop valve, 11-reduction valve, 12-drain, 13-first ball valve, 14-choke stop evacuation valve, 15-retaining valve, 16-the 4th pipeline, 17-second stop valve, A-blow pressure, B-tightness pressure, C-opening pressure.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail, and embodiment of the present utility model includes but not limited to the following example.
Embodiment
As shown in Figure 1 and 2, a kind of safety valve for pressure pipeline on-line measuring device, comprises pressure pipeline 1, first pipeline 2, second pipe 3, the 3rd pipeline 4 and computing machine.Described pressure pipeline is communicated with the first pipeline and second pipe.Described first pipeline is provided with successively choke stop evacuation valve 14 and the first ball valve 13.Described second pipe is provided with successively the second ball valve 6 and safety valve 5.
Second pipe between described second ball valve and safety valve is communicated with the 3rd pipeline and second pipe above the 3rd pipeline tie point is provided with the first signal inductor.
Described 3rd pipeline one end is connected with second pipe, and the other end is connected with gas bomb 9, and described 3rd pipeline is also provided with the first stop valve, and the 3rd pipeline between described first stop valve 10 and gas bomb is provided with drain; The 3rd pipeline between described drain and gas bomb is provided with secondary signal inductor 8; The 3rd pipeline between described secondary signal inductor and drain is provided with reduction valve 11; The 3rd pipeline between described reduction valve and drain 12 is provided with retaining valve 15.Described drain also passes through Valve controlling.
Described first signal inductor 7 and secondary signal inductor 8 are all by the reception of computer control signal, transmission and record.
The first pipeline between described first ball valve and choke stop evacuation valve is also communicated with by the 4th pipeline 16 with drain, and described 4th pipeline is provided with the second stop valve 17.
The existence of the 4th pipeline makes the first manifold pressure also can by drain emptying, and security performance increases further.
Principle of work of the present utility model is, when needs on-line checkingi safety valve set pressure, opens reduction valve, retaining valve and the first stop valve, other valve closings; Open gas bomb, the valve controlling gas bomb adjusts atmospheric pressure; Make outlet pressure reach the set-pressure of safety valve, now check whether safety valve is opened, and observe the data that computing machine records, judge that whether the set-pressure of safety valve is qualified.
When needing the closing presure detecting safety valve, on the basis of the above, gas bomb is closed, open the valve that drain connects, pressure is dropped to blowdown pressure of safety valve, and whether the data that now can obtain on the second inductor are stablized, if numeral is stable, illustrate that the closing presure of safety valve is qualified.
When needing the impermeability detecting safety valve, on the basis of the above, close gas bomb, open the valve that drain connects, pressure is dropped to blowdown pressure of safety valve, and whether the data that now can obtain on the second inductor decline, if numeral declines, after safety valve blowback is described, impermeability is bad, has leakage, needs maintenance.
The testing process of the safety valve of above pressure pipeline need be carried out 2-3 time repeatedly.
Preferably, the specification of described 3rd pipeline and the 4th pipeline is DN5 ~ DN10.
What deserves to be explained is, the existence of the first pipeline, make security of the present utility model higher, when there is problem, can various valve row pressures artificially on manual unlocking first pipeline.And when on-line checkingi, owing to being provided with the valve on the first pipeline of manual control for subsequent use, while making it possible to stop the transport of gas or liquid in pressure pipeline, the security of safety valve is detected.
According to above-described embodiment, just the utility model can be realized well.What deserves to be explained is; under prerequisite based on said structure design; for solving same technical matters; even if some making on the utility model are without substantial change or polishing; the essence of the technical scheme adopted is still the same with the utility model, therefore it also should in protection domain of the present utility model.
Claims (3)
1. a safety valve for pressure pipeline on-line measuring device, comprise pressure pipeline (1) and safety valve (5), described pressure pipeline (1) is communicated with second pipe (3), according to being provided with the second ball valve (6) and safety valve (5) on second pipe (3), it is characterized in that, also comprise computing machine, the second pipe (3) between described safety valve (5) and the second ball valve (6) is communicated with the 3rd pipeline (4), described 3rd pipeline (4) is also communicated with gas bomb (9); Described 3rd pipeline (4) is also provided with the first stop valve (10), the 3rd pipeline (4) between described first stop valve (10) and gas bomb (9) is provided with drain (12), and described drain (12) is also by Valve controlling opening and closing; The 3rd pipeline (4) between described drain (12) and gas bomb (9) is provided with secondary signal inductor (8); The 3rd pipeline (4) between described secondary signal inductor (8) and drain (12) is provided with reduction valve (11), and described drain (12) also passes through Valve controlling; The 3rd pipeline between described drain and reduction valve (11) is also provided with retaining valve (15); Second pipe (3) between described safety valve (5) and the second ball valve (6) is also provided with the first signal inductor (7); First signal inductor (7) and secondary signal inductor (8) for induction pressure, temperature signal, and by Signal transmissions to computing machine.
2. a kind of safety valve for pressure pipeline on-line measuring device according to claim 1, it is characterized in that, described pressure pipeline (1) is also communicated with the first pipeline (2), described first pipeline (2) is provided with successively choke stop evacuation valve (14) and the first ball valve (13).
3. a kind of safety valve for pressure pipeline on-line measuring device according to claim 2, it is characterized in that, also comprise the 4th pipeline (16), the first pipeline (2) between described first ball valve (13) and choke stop evacuation valve (14) is also communicated with by the 4th pipeline (16) with drain (12), and described 4th pipeline (16) is provided with the second stop valve (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520603812.5U CN204882059U (en) | 2015-08-12 | 2015-08-12 | Pipeline under pressure relief valve on -line measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520603812.5U CN204882059U (en) | 2015-08-12 | 2015-08-12 | Pipeline under pressure relief valve on -line measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN204882059U true CN204882059U (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520603812.5U Active CN204882059U (en) | 2015-08-12 | 2015-08-12 | Pipeline under pressure relief valve on -line measuring device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806603A (en) * | 2016-03-16 | 2016-07-27 | 北京宇航系统工程研究所 | Pilot safety valve testing system and method |
| CN106092561A (en) * | 2016-08-29 | 2016-11-09 | 湖北三江航天红峰控制有限公司 | A kind of multifunctional safety valve calibration equipment |
| CN110307369A (en) * | 2019-07-09 | 2019-10-08 | 福建福清核电有限公司 | A kind of operated micropressure adjusting valve off-line setting calculation device and method |
-
2015
- 2015-08-12 CN CN201520603812.5U patent/CN204882059U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806603A (en) * | 2016-03-16 | 2016-07-27 | 北京宇航系统工程研究所 | Pilot safety valve testing system and method |
| CN106092561A (en) * | 2016-08-29 | 2016-11-09 | 湖北三江航天红峰控制有限公司 | A kind of multifunctional safety valve calibration equipment |
| CN110307369A (en) * | 2019-07-09 | 2019-10-08 | 福建福清核电有限公司 | A kind of operated micropressure adjusting valve off-line setting calculation device and method |
| CN110307369B (en) * | 2019-07-09 | 2024-02-09 | 福建福清核电有限公司 | Offline setting device and method for self-operated micro-pressure regulating valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200102 Address after: 610000 area C, Tianfu Jingrong center, Chengdu Science City, No. 6, west section of Hupan Road, Xinglong Street, Tianfu New District, Chengdu, Sichuan Province Patentee after: Sichuan Safety Measurement Technology Co., Ltd. Address before: 629019 No. 162, No. 4, No. 3, building 18, 11, ship mountain, Suining, Sichuan, China Patentee before: Liu Wenmin |