CN202304963U - Online testing device for differential-pressure-type liquid level meter - Google Patents

Online testing device for differential-pressure-type liquid level meter Download PDF

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Publication number
CN202304963U
CN202304963U CN2011204124289U CN201120412428U CN202304963U CN 202304963 U CN202304963 U CN 202304963U CN 2011204124289 U CN2011204124289 U CN 2011204124289U CN 201120412428 U CN201120412428 U CN 201120412428U CN 202304963 U CN202304963 U CN 202304963U
Authority
CN
China
Prior art keywords
liquid
valve
gas
phase
level meter
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 - Fee Related
Application number
CN2011204124289U
Other languages
Chinese (zh)
Inventor
徐建忠
黄强周
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHANGZHOU BURAN CRYOGENIC EQUIPMENT Co Ltd
Original Assignee
CHANGZHOU BURAN CRYOGENIC EQUIPMENT Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CHANGZHOU BURAN CRYOGENIC EQUIPMENT Co Ltd filed Critical CHANGZHOU BURAN CRYOGENIC EQUIPMENT Co Ltd
Priority to CN2011204124289U priority Critical patent/CN202304963U/en
Application granted granted Critical
Publication of CN202304963U publication Critical patent/CN202304963U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses an online testing device for a differential-pressure-type liquid level meter. The online testing device comprises a liquid level meter with a liquid inlet and a gas inlet, a balance valve, a liquid-phase valve, a gas-phase valve and connecting pipes. The liquid inlet side of the liquid-phase valve is communicated with a liquid phase. The liquid outlet side of the liquid-phase valve is connected to the liquid inlet of the liquid level meter. The gas inlet side of the gas-phase valve is communicated with a gas phase. The gas outlet side of the gas-phase valve is connected to the gas inlet of the liquid level meter. The two sides of the balance valve are respectively connected to the liquid outlet side of the liquid-phase valve and the gas outlet side of the gas-phase valve. The online testing device additionally comprises a liquid-phase shutoff valve and a gas-phase shutoff valve. The liquid inlet side of the liquid-phase shutoff valve is communicated with a liquid-phase pressurizing port. The liquid outlet side of the liquid-phase shutoff valve is installed onto a first connecting pipe between the liquid inlet of the liquid level meter and the liquid outlet side of the liquid-phase valve. The gas inlet side of the gas-phase shutoff valve is communicated with a gas-phase pressurizing port. The gas outlet side of the gas-phase shutoff valve is installed on a second connecting pipe between the gas inlet of the liquid level meter and the gas outlet side of the gas-phase valve. The online testing device for the differential-pressure-type liquid level meter has the advantages that the online testing of the differential-pressure-type liquid level meter can be realized and the maintenance period after the liquid level meter is damaged is shortened.

Description

The on-line measuring device of differential pressure type liquid level meter
Technical field
The utility model relates to a kind of on-line measuring device of differential pressure type liquid level meter, is used for the online detection of the liquid level meter of cryogenic liquid warehousing and transportation facilities.
Background technology
At present, the cryogenic liquid warehousing and transportation facilities all should dispose a differential pressure type liquid level meter, because the operating personnel's of use cryogenic liquid warehousing and transportation facilities unit operant level and professional knowledge are very different; Filling in jar process of cryogenic liquid; Often the liquid level meter is filled bad because of misoperation, and the damage of liquid level meter has two kinds of situation: a kind of is that built-in corrugated tube damages, and makes the indication of liquid level meter no longer be linear; Liquid level meter reading is inaccurate, and this damage can't be corrected; And another kind of the damage is the pointer skew, and zero-bit is inaccurate, and it is linear that liquid level just still is, and this damage can make this liquid level meter continue to use through the zeroing of pointer.But two kinds of damaged conditions just can detect after all will the liquid level meter being disassembled in the liquid level meter circuit design of traditional cryogenic liquid warehousing and transportation facilities.
Summary of the invention
The purpose of the utility model provides a kind of on-line measuring device of differential pressure type liquid level meter, and it can realize online detection differential pressure type liquid level meter, shortens the maintenance cycle after the liquid level meter damages.
The technical scheme that realizes the utility model purpose is: a kind of on-line measuring device of differential pressure type liquid level meter; It comprises liquid level meter, equalizing valve, liquid phase valve, gas valve and the connecting pipe of band inlet and air intake opening; The liquid feeding side of liquid phase valve communicates with liquid phase; The tapping side of liquid phase valve is taken over the inlet of liquid level meter, and the air inlet side of gas valve communicates with gas phase, the air intake opening of side joint pipe to the liquid level meter of giving vent to anger of gas valve; The both sides of equalizing valve are taken over the side of giving vent to anger of the tapping side and the gas valve of liquid phase valve respectively; Also comprise liquid phase stop valve and gas phase stop valve, the liquid feeding side of liquid phase stop valve is suppressed mouth with liquid phase and is communicated, and the tapping side of liquid phase stop valve is installed on the inlet and first connecting pipe between the liquid phase valve tapping side of liquid level meter; The air inlet side and the gas phase of gas phase stop valve suppressed and mouthful communicated, and air intake opening and the gas valve that the side of giving vent to anger of gas phase stop valve is installed in the liquid level meter given vent to anger on second connecting pipe between the side.
After having adopted technique scheme, when the liquid level meter breaks down, at first close liquid phase valve and gas valve; Open equalizing valve, make liquid level meter gas phase and liquid phase pressure equilibrium, and then close equalizing valve; Pointer zeroing with the liquid level meter connects liquid phase to the pressue device that has precision pressure gauge and suppresses mouth, and feeding is forced into liquid level meter full scale mutually; Whether the reading error of pressure rising value and precision pressure gauge of seeing the liquid level meter is within error range; Slow then relief pressure, in pressure decline process, whether the fall of observing liquid level meter pointer fall and tensimeter correspondence is linear; Suppress mouth in gas phase and add negative pressure and liquid phase and suppress and mouthful observe equally, whether damage to differentiate liquid level.So just realized online detection, shortened the maintenance cycle after the liquid level meter damages greatly, made the applying unit of cryogenic liquid warehousing and transportation facilities be unlikely to delay the use of warehousing and transportation facilities because of the maintenance of liquid level meter.
Description of drawings
Fig. 1 is the synoptic diagram of the utility model.
Embodiment
For the content that makes the utility model is expressly understood more easily, below according to specific embodiment and combine accompanying drawing, the utility model is done further detailed explanation,
As shown in Figure 1; A kind of on-line measuring device of differential pressure type liquid level meter; It comprises liquid level meter 1, equalizing valve 4, liquid phase valve 2, gas valve 3 and the connecting pipe 9 of band inlet 1-1 and air intake opening 1-2, and the liquid feeding side of liquid phase valve 2 communicates with liquid phase, and the tapping side of liquid phase valve 2 is taken over the inlet 1-1 of liquid level meter 1; The air inlet side of gas valve 3 communicates with gas phase; The side joint pipe of giving vent to anger of gas valve 3 is to the air intake opening 1-2 of liquid level meter 1, and the both sides of equalizing valve 4 are taken over the side of giving vent to anger of the tapping side and the gas valve 3 of liquid phase valve 2 respectively, also comprise liquid phase stop valve 5 and gas phase stop valve 6; The liquid feeding side of liquid phase stop valve 5 is suppressed mouth 7 with liquid phase and is communicated; The tapping side of liquid phase stop valve 5 is installed on the inlet 1-1 and the first connecting pipe 9-1 between liquid phase valve 2 tapping sides of liquid level meter 1, and the air inlet side and the gas phase of gas phase stop valve 6 suppressed mouthfuls 8 and communicated, and air intake opening 1-2 and the gas valve 3 that the side of giving vent to anger of gas phase stop valve 6 is installed in liquid level meter 1 given vent to anger on the second connecting pipe 9-2 between the side.
The principle of work of the utility model is following:
When liquid level meter 1 breaks down, at first close liquid phase valve 2 and gas valve 3, open equalizing valve 4; Make liquid level meter 1 gas phase and liquid phase pressure equilibrium, and then close equalizing valve 4, with the pointer zeroing of liquid level meter 1; Connect liquid phase to the pressue device that has precision pressure gauge and suppress mouth 7; Feeding is forced into liquid level meter 1 full scale mutually, the reading error of pressure rising value and precision pressure gauge of seeing liquid level meter 1 whether within error range, slow relief pressure then; In pressure decline process, whether the fall of observing liquid level meter 1 pointer fall and tensimeter correspondence is linear; Suppress mouthfuls 8 in gas phase and add negative pressure and liquid phase and suppress mouthfuls 7 and observe equally, whether damage to differentiate liquid level 1.
Above-described specific embodiment; Purpose, technical scheme and beneficial effect to the utility model have carried out further explain, it should be understood that the above is merely the specific embodiment of the utility model; Be not limited to the utility model; All within the spirit and principle of the utility model, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.

Claims (1)

1. the on-line measuring device of a differential pressure type liquid level meter; It comprises liquid level meter (1), equalizing valve (4), liquid phase valve (2), gas valve (3) and the connecting pipe (9) of band inlet (1-1) and air intake opening (1-2); The liquid feeding side of liquid phase valve (2) communicates with liquid phase; The tapping side of liquid phase valve (2) is taken over the inlet (1-1) of liquid level meter (1); The air inlet side of gas valve (3) communicates with gas phase; The air intake opening (1-2) of side joint pipe of giving vent to anger of gas valve (3) to liquid level meter (1); The both sides of equalizing valve (4) are taken over the side of giving vent to anger of the tapping side and the gas valve (3) of liquid phase valve (2) respectively; It is characterized in that: also comprise liquid phase stop valve (5) and gas phase stop valve (6), the liquid feeding side of liquid phase stop valve (5) is suppressed mouthful (7) with liquid phase and is communicated, and the tapping side of liquid phase stop valve (5) is installed on the inlet (1-1) and first connecting pipe (9-1) between liquid phase valve (2) tapping side of liquid level meter (1); The air inlet side of gas phase stop valve (6) and gas phase are suppressed mouthful (8) and are communicated, and air intake opening (1-2) and the gas valve (3) that the side of giving vent to anger of gas phase stop valve (6) is installed in liquid level meter (1) given vent to anger on second connecting pipe (9-2) between the side.
CN2011204124289U 2011-10-26 2011-10-26 Online testing device for differential-pressure-type liquid level meter Expired - Fee Related CN202304963U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011204124289U CN202304963U (en) 2011-10-26 2011-10-26 Online testing device for differential-pressure-type liquid level meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011204124289U CN202304963U (en) 2011-10-26 2011-10-26 Online testing device for differential-pressure-type liquid level meter

Publications (1)

Publication Number Publication Date
CN202304963U true CN202304963U (en) 2012-07-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011204124289U Expired - Fee Related CN202304963U (en) 2011-10-26 2011-10-26 Online testing device for differential-pressure-type liquid level meter

Country Status (1)

Country Link
CN (1) CN202304963U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103292877A (en) * 2013-06-21 2013-09-11 山东康威通信技术股份有限公司 On-line testing method and device for throw-in type liquid level transmitter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103292877A (en) * 2013-06-21 2013-09-11 山东康威通信技术股份有限公司 On-line testing method and device for throw-in type liquid level transmitter

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Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120704

Termination date: 20161026

CF01 Termination of patent right due to non-payment of annual fee