CN2867309Y - Inserting back flushing differential pressure liquid level transmitter - Google Patents
Inserting back flushing differential pressure liquid level transmitter Download PDFInfo
- Publication number
- CN2867309Y CN2867309Y CN 200520129791 CN200520129791U CN2867309Y CN 2867309 Y CN2867309 Y CN 2867309Y CN 200520129791 CN200520129791 CN 200520129791 CN 200520129791 U CN200520129791 U CN 200520129791U CN 2867309 Y CN2867309 Y CN 2867309Y
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- CN
- China
- Prior art keywords
- fluid level
- level transmitter
- pressure
- differential pressure
- back flush
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- Expired - Fee Related
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Abstract
The utility model discloses an insert back-washing differential pressure transmitter and belongs to the field of apparatus for metering water level inside a pressure container. It comprises two pressure ducts for inserting into upper and lower positions on the wall of the pressure container, a cut-off valve (I) connected to the pressure duct by short pipe having a cut-off valve (II), and a back-washing conduit valve fitted between the two cut-off valves and connected to a LT liquid level transmitter and DCS liquid level gauge. The utility model avoids the problems of accumulation of polymers and blockage caused by the slow in flow rate of liquid medium near the inner wall of the pressure container, and allows the back-washing of blocked port by introducing the same work medium as the one inside the pressure container by applying a back-washing device externally to the pressure duct, ensuring the accuracy of water level measurement.
Description
Technical field
The utility model belongs to liquid level emasuring device in the pressure vessel, particularly a kind of plug-in type back flush differential pressure fluid level transmitter.
Background technology
The pressure difference that different liquid levels produces in pressure vessel, the differential pressure fluid level transmitter is exactly a principle of utilizing this differential pressure, the height pressure of measured medium is entered the high and low voltage chamber of measuring sensor respectively, act on the electronic surveying element, be output as corresponding liquid level signal by a series of conversion, thus the liquid level in the gaging pressure container.Conventional old-fashioned fluid level transmitter tracting pressuring hole is direct perforate impulse on pressure vessel wall.As easy as rolling off a log generation polymerization of medium and precipitation in process of production, especially the fluid working medium in petrochemical industry generally contains unsaturated hydrocarbon, very easily polymerization more; Because actuating medium is unholiness, easily produces impurity and gather simultaneously.In process of production, because the pressure vessel internal face is because factors such as frictional resistance and dielectric viscosity height cause the slow even stagnation of this place's velocity of medium, so polymkeric substance and impurity are easy to be detained to gather be bonded in the pressure guiding pipe port, thereby result in blockage, make this measurement mechanism can't operate as normal.
Summary of the invention
The purpose of this utility model provides a kind of plug-in type back flush differential pressure fluid level transmitter.At existing pressure vessel internal face because factors such as frictional resistance and dielectric viscosity height, cause the slow even stagnation of this place's velocity of medium, be bonded in the pressure guiding pipe port so polymkeric substance and impurity are easy to be detained gather, thereby result in blockage, make the deficiency that this measurement mechanism can't operate as normal.Differential pressure fluid level transmitter of the present utility model is on pressure vessel wall, tracting pressuring hole is directly opened in following two positions, and by short tube connection stop valve, be connected with the input port of fluid level transmitter respectively then, the delivery outlet of fluid level transmitter is connected to the DCS fluid level measuring instrument, it is characterized in that: described plug-in type back flush differential pressure fluid level transmitter is on pressure vessel 1 wall, pressure guiding pipe 2 is inserted in following two positions, pressure guiding pipe 2 is connected stop valve II5 with stop valve I3 by short tube 4, between two stop valves, connect back flush showering guilding valve 9, go up then, following two-way is connected by the input port of conduit 8 and LT fluid level transmitter 6 respectively, and the delivery outlet of LT fluid level transmitter 6 is connected to DCS fluid level measuring instrument 7.
Described pressure guiding pipe inserts chamber wall inside and is divided into the slope mouth of being with radian.
Described back flush showering guilding valve is connected with 3/4 " band silk head lead and drench mouthful.
The beneficial effects of the utility model are 1, adopt the plug-in type pressure, have eliminated because of the container inner wall velocity of medium slowly to cause easy blocking problem; 2, the impulse port design is domatic type, avoids polymkeric substance to stop up in this alluvial to greatest extent; 3. the pressure guiding pipe outside adds back purge system, when needing, can take at any time and will cause under the showering guilding valve, close stop valve II with identical actuating medium in the container (its pressure requires than the container inner pressure height), open showering guilding valve, can carry out back flush the pressure port that stops up.
Description of drawings
Fig. 1 is a plug-in type back flush differential pressure fluid level transmitter structural representation.
Embodiment
The utility model provides a kind of plug-in type back flush differential pressure fluid level transmitter.In plug-in type back flush differential pressure fluid level transmitter structural representation shown in Figure 1, pressure guiding pipe 2 is inserted in upper and lower two positions at pressure vessel 1 wall, pressure guiding pipe 2 is connected stop valve II5 with stop valve I3 by short tube 4, between two stop valves, connect back flush showering guilding valve 9, upper and lower then two-way is connected by the input port of conduit 8 and LT fluid level transmitter 6 respectively, and the delivery outlet of LT fluid level transmitter 6 is connected to DCS fluid level measuring instrument 7.Described pressure guiding pipe inserts chamber wall inside and is divided into the slope mouth of being with radian.Described back flush showering guilding valve is connected with 3/4 " band silk head lead and drench mouthful.When needing, can take at any time and will cause under the showering guilding valve, close stop valve II, open showering guilding valve, can carry out back flush the pressure port that stops up with identical actuating medium in the container (its pressure requires than the container inner pressure height).
Claims (3)
1. plug-in type back flush differential pressure fluid level transmitter, described differential pressure fluid level transmitter is on pressure vessel wall, tracting pressuring hole is directly opened in following two positions, and by short tube connection stop valve, be connected with the input port of fluid level transmitter respectively then, the delivery outlet of fluid level transmitter is connected to the DCS fluid level measuring instrument, it is characterized in that: described plug-in type back flush differential pressure fluid level transmitter is on pressure vessel (1) wall, pressure guiding pipe (2) is inserted in following two positions, pressure guiding pipe (2) is connected stop valve II (5) with stop valve I (3) by short tube (4), between two stop valves, connect back flush showering guilding valve (9), go up then, following two-way is connected by the input port of conduit (8) and LT fluid level transmitter (6) respectively, and the delivery outlet of LT fluid level transmitter (6) is connected to DCS fluid level measuring instrument (7).
2. according to the described plug-in type back flush of claim 1 differential pressure fluid level transmitter, it is characterized in that: described pressure guiding pipe inserts chamber wall inside and is divided into the slope mouth of being with radian.
3. according to the described plug-in type back flush of claim 1 differential pressure fluid level transmitter, it is characterized in that: described back flush showering guilding valve is connected with 3/4 " band silk head lead and drench mouthful.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520129791 CN2867309Y (en) | 2005-10-19 | 2005-10-19 | Inserting back flushing differential pressure liquid level transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520129791 CN2867309Y (en) | 2005-10-19 | 2005-10-19 | Inserting back flushing differential pressure liquid level transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2867309Y true CN2867309Y (en) | 2007-02-07 |
Family
ID=37703015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520129791 Expired - Fee Related CN2867309Y (en) | 2005-10-19 | 2005-10-19 | Inserting back flushing differential pressure liquid level transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2867309Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100570287C (en) * | 2007-12-14 | 2009-12-16 | 西安长庆科技工程有限责任公司 | Built-in pressure sampling method for differential pressure levelmeter |
| CN103277670A (en) * | 2013-04-17 | 2013-09-04 | 新兴能源装备股份有限公司 | Low temperature liquefied gas pressure sampling apparatus |
| CN103805284A (en) * | 2012-09-07 | 2014-05-21 | 西门子公司 | Device for reliable filling level control in a quenching chamber |
| CN103895985A (en) * | 2014-03-25 | 2014-07-02 | 济钢集团有限公司 | Micropressure comparing and measuring type tank liquid level detecting device and method |
| CN108801392A (en) * | 2018-08-03 | 2018-11-13 | 四川金象赛瑞化工股份有限公司 | A kind of one ammonia liquid separation level measuring arrangement of novel synthesis ammonia and method |
-
2005
- 2005-10-19 CN CN 200520129791 patent/CN2867309Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100570287C (en) * | 2007-12-14 | 2009-12-16 | 西安长庆科技工程有限责任公司 | Built-in pressure sampling method for differential pressure levelmeter |
| CN103805284A (en) * | 2012-09-07 | 2014-05-21 | 西门子公司 | Device for reliable filling level control in a quenching chamber |
| US9377785B2 (en) | 2012-09-07 | 2016-06-28 | Siemens Aktiengesellschaft | Device for reliable filling level control in a quenching chamber that is arranged downstream of entrained-flow gasification and has inert-gas flushing of the pressure-recording measuring location |
| CN103277670A (en) * | 2013-04-17 | 2013-09-04 | 新兴能源装备股份有限公司 | Low temperature liquefied gas pressure sampling apparatus |
| CN103277670B (en) * | 2013-04-17 | 2016-04-20 | 新兴能源装备股份有限公司 | Liquefied gas at low temp pressure vessel |
| CN103895985A (en) * | 2014-03-25 | 2014-07-02 | 济钢集团有限公司 | Micropressure comparing and measuring type tank liquid level detecting device and method |
| CN108801392A (en) * | 2018-08-03 | 2018-11-13 | 四川金象赛瑞化工股份有限公司 | A kind of one ammonia liquid separation level measuring arrangement of novel synthesis ammonia and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |