CN208921380U - DBB valve leak detecting device - Google Patents
DBB valve leak detecting device Download PDFInfo
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- CN208921380U CN208921380U CN201821541085.4U CN201821541085U CN208921380U CN 208921380 U CN208921380 U CN 208921380U CN 201821541085 U CN201821541085 U CN 201821541085U CN 208921380 U CN208921380 U CN 208921380U
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- dbb
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- pressure
- leak detecting
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Abstract
The utility model discloses a kind of DBB valve leak detecting devices.The device includes DBB valve, pressure guiding pipe and intelligent pressure/differential transmitter, and DBB valve is connected with pipeline before a valve, and DBB valve has a valve chamber;One end of pressure guiding pipe is connected with pipeline before valve, and the other end is connected with valve chamber, and first shut-off valve and second shut-off valve are provided on pressure guiding pipe;Intelligent pressure/differential transmitter is connected with the first shut-off valve and the second shut-off valve;Wherein, on pressure guiding pipe, the first shut-off valve pipeline before valve, and the second shut-off valve is close to valve chamber.The setting and connection that DBB valve leak detecting device in the utility model passes through the equipment such as shut-off valve and intelligent differential pressure transmitter, it can monitor that there is a phenomenon where leak for DBB valve in time, realize the on-line checking of the airtightness to DBB valve, provide its technical conditions for being used for the work such as flow meter calibrating, it is ensured that DBB valve can be used smoothly.
Description
Technical field
The utility model relates to detection device field, in particular to a kind of DBB valve leak detecting device.
Background technique
DBB (double block and bleed) valve, i.e., having a double meaning disconnected double bleeder valves are that one kind has having a double meaning disconnected and releases
The plug valve of function.The centre of DBB valve has a valve chamber, is equipped at the both ends of valve chamber and is equipped with a Shuttoff Valve, and
A cock is then equipped on the intermediate position of valve chamber, wherein Shuttoff Valve is able to bear the pressure at the both ends from DBB valve, and
Cock can then release to the pressure of valve chamber.
DBB valve all has relatively broad application in multiple industrial fields, such as based on carrying out to crude oil etc.
Calibration of flowmeter of amount etc..And DBB valve in use, in order to guarantee metering etc. work accuracy and safety,
Need to guarantee that DBB valve remains good airtight performance, so need to detect it, in case its airtightness deficiency causes
Leakage phenomenon.And if DBB valve is detected using preceding, then be often difficult to ensure that it in use also can be with
When keep airtightness, and leakage phenomenon will not occur in the case where being under pressure, so, only design is to currently in use
DBB valve carries out online leak detection, it is ensured that can detect the generation of leakage phenomenon in time.It just can guarantee the smooth of the work such as metering
It carries out.
Utility model content
To solve the above problems, the utility model provides a kind of DBB valve leak detecting device.
One aspect according to the present utility model provides a kind of DBB valve leak detecting device, including
DBB valve, DBB valve are connected with pipeline before a valve, and DBB valve has a valve chamber;
One end of pressure guiding pipe, pressure guiding pipe is connected with pipeline before valve, and the other end is connected with valve chamber, and on pressure guiding pipe
It is provided with first shut-off valve and second shut-off valve;
Intelligent pressure/differential transmitter, intelligent pressure/differential transmitter are connected with the first shut-off valve and the second shut-off valve;
Wherein, on pressure guiding pipe, the first shut-off valve pipeline before valve, and the second shut-off valve is close to valve chamber.
The setting that DBB valve leak detecting device in the utility model passes through the equipment such as shut-off valve and intelligent differential pressure transmitter
And connection, it can monitor that DBB valve there is a phenomenon where leaking, realizes the on-line checking of the airtightness to DBB valve, provides in time
Its technical conditions for being used for the work such as flow meter calibrating, it is ensured that DBB valve can use smoothly.
In some embodiments, valve chamber is equipped with a cock, and is equipped with a pass at the opposite both ends of valve chamber
Disconnected valve.The specific structure for specifying DBB valve as a result, can be realized having a double meaning disconnected and drainage function.
In some embodiments, the first shut-off valve is V-127 type, and the second shut-off valve is V-128 type.It is arranged as a result,
The model of first shut-off valve and the second shut-off valve can according to need the suitable each shut-off valve of selection, to play corresponding effect
Fruit.
In some embodiments, three valve groups, the first shut-off valve and three valve groups are installed on intelligent pressure/differential transmitter
Negative terminal be connected, and the second shut-off valve is connected with the anode of three valve groups.It can be realized as a result, by using three valve groups by
One shut-off valve and the second shut-off valve are connected with intelligent pressure/differential transmitter, and are provided with its connection type, make intelligent pressure/differential
Transmitter is able to detect the pressure difference between the first shut-off valve and the second shut-off valve.
In some embodiments, intelligent pressure/differential transmitter is also connected with a pressure difference indicator.Pass through pressure difference as a result,
Indicator can show the pressure difference between the first shut-off valve and the second shut-off valve detected by intelligent pressure/differential transmitter.
In some embodiments, further include a manual operation pressure relief device, wherein manual operation pressure relief device can to valve chamber into
Row pressure release.Pressure release is carried out to valve chamber and pressure difference is detected thus, it is possible to be manually operated, to detect whether DBB valve is sent out
Raw leakage, and judge the accuracy of intelligent pressure/differential transmitter structure detected.
Detailed description of the invention
Fig. 1 is the circuit diagram of the DBB valve leak detecting device of one embodiment of the utility model.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
Fig. 1 schematically shows a kind of electricity of the DBB valve leak detecting device of embodiment according to the present utility model
Road.As shown in Figure 1, the device acts on a DBB valve 1, which has a valve chamber 11, and one is equipped on valve chamber 11
A cock 12, wherein cock 12 is preferably the cock 12 of wedge shape;And a shut-off valve is equipped at the opposite both ends of valve chamber 11
Door 13, the DBB valve 1 can be realized having a double meaning disconnected and drainage function as a result,.In addition, DBB valve 1 is connected with pipeline 10 before a valve,
And pipeline 10 is located at the front of DBB valve 1 before valve, that is, when the medium to be measured is flowed in pipeline, before valve being first passed through
Pipeline 10, then using DBB valve 1.
A pressure guiding pipe 2, pipeline before wherein one end of pressure guiding pipe 2 and valve are being additionally provided with before valve between pipeline 10 and DBB valve 1
10 are connected, and the other end is connected with the valve chamber 11 of DBB valve 1.And there are two shut-off valves for setting on pressure guiding pipe 2, are set to
First shut-off valve 3 and the second shut-off valve 4, wherein the model of the first shut-off valve 3 is preferably V-127 type, on pressure guiding pipe 2
Position is closer to pipeline 10 before valve;And the model of the second shut-off valve 4 is preferably V-123 type, the position on pressure guiding pipe 2 is more
Add close to valve chamber 11.
First shut-off valve 3 and the second shut-off valve 4 are also connected with an intelligent pressure/differential transmitter 5, and in intelligent pressure/differential
One three valve group is installed, wherein the first shut-off valve 3 is connected with the negative terminal of three valve groups, and the second shut-off valve 4 on transmitter 5
It is connected with the anode of three valve groups.In addition, intelligent pressure/differential transmitter 5 is also connected with a pressure difference indicator 51.Intelligent pressure/differential
Transmitter 5 can be received via three valve groups transmits the pressure of coming from the first shut-off valve 3 and the second shut-off valve 4 respectively, thus
It detects pressure difference, and is shown by pressure difference indicator 51.
Further, it is also possible to a manual operation pressure relief device is set in position, and operating manual operation pressure relief device can be to DBB
The valve chamber 11 of valve 1 carries out pressure release, to further judge whether DBB valve 1 leaks according to pressure difference at this time.
When using the detection device, the first shut-off valve 3 and the second shut-off valve 4 are set as standard-sized sheet, and the pressure of three valve groups
Valve is set as standard-sized sheet, and balanced valve is then set as closing, at this time if DBB valve 1 opened, the pressure of pipeline 10 before valve chamber 11 and valve
Unanimously, pressure difference detected by intelligent pressure/differential transmitter 5 is approximately 0kPa.
And when DBB valve 1 is closed, valve chamber 11 is then seal chamber, and cock 12 seals downwards with the closing of valve, valve chamber
Medium in 11 is squeezed but can not release, and the pressure difference before valve chamber 11 and valve between pipeline 10 will be gradually increased as a result,
And pressure difference detected by intelligent pressure/differential transmitter 5 is also gradually got higher, then can determine whether as the favorable sealing property of DBB valve 1;And
If DBB valve 1 leaks, the medium in valve chamber 11 is no longer influenced by pressure, thus can be gradually restored to before being squeezed, and
It releases under the action of pressure difference, and pressure difference detected by intelligent pressure/differential transmitter 5 can then gradually become smaller, or even drop to
Zero, then it can determine whether to leak for DBB valve 1.
If during using the detection device, it is believed that its judging result may be incorrect, then can operate opening
Manual operation pressure relief device carries out pressure release to the valve chamber 11 of DBB valve 1, and manual operation pressure relief device is closed after pressure release is complete, then observation pressure
Pressure difference shown by poor indicator 51, if the favorable sealing property of DBB valve 1, shown pressure difference should be to remain at this time
Negative value, and if pressure difference is gradually increasing and even up to levels off to zero, it can determine whether to leak for DBB valve 1.
Above-described is only some embodiments of the utility model.For those of ordinary skill in the art,
Without departing from the concept of the present invention, various modifications and improvements can be made, these belong to practical
Novel protection scope.
Claims (6)
1.DBB valve leak detecting device, it is characterised in that: including
DBB valve (1), the DBB valve (1) are connected with pipeline (10) before a valve, and the DBB valve (1) has one
A valve chamber (11);
Pressure guiding pipe (2), wherein one end of the pressure guiding pipe (2) are connected with pipeline (10) before the valve, the other end and the valve
Chamber (11) is connected, and first shut-off valve (3) and second shut-off valve (4) are provided on the pressure guiding pipe (2);
Intelligent pressure/differential transmitter (5), the intelligent pressure/differential transmitter (5) and first shut-off valve (3) and second cut-off
Valve (4) is connected;
Wherein, on the pressure guiding pipe (2), pipeline (10) before the close valve of first shut-off valve (3), and described second section
Only valve (4) is close to the valve chamber (11).
2. DBB valve leak detecting device according to claim 1, it is characterised in that: the valve chamber (11) is equipped with one
Cock (12), and a Shuttoff Valve (13) is equipped at the opposite both ends of the valve chamber (11).
3. DBB valve leak detecting device according to claim 1, it is characterised in that: first shut-off valve (3) is V-
127 types, and second shut-off valve (4) is V-128 type.
4. DBB valve leak detecting device according to claim 1, it is characterised in that: on the intelligent pressure/differential transmitter (5)
Three valve groups are provided with, first shut-off valve (3) is connected with the negative terminal of three valve group, and second shut-off valve
(4) it is connected with the anode of three valve group.
5. DBB valve leak detecting device according to claim 1, it is characterised in that: the intelligent pressure/differential transmitter (5) is also
It is connected with a pressure difference indicator (51).
6. DBB valve leak detecting device according to claim 1, it is characterised in that: it further include a manual operation pressure relief device,
Wherein, the manual operation pressure relief device can carry out pressure release to the valve chamber (11).
Priority Applications (1)
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CN201821541085.4U CN208921380U (en) | 2018-09-20 | 2018-09-20 | DBB valve leak detecting device |
Applications Claiming Priority (1)
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CN201821541085.4U CN208921380U (en) | 2018-09-20 | 2018-09-20 | DBB valve leak detecting device |
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CN208921380U true CN208921380U (en) | 2019-05-31 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108956057A (en) * | 2018-09-20 | 2018-12-07 | 中国石油化工股份有限公司 | DBB valve leak detecting device |
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2018
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108956057A (en) * | 2018-09-20 | 2018-12-07 | 中国石油化工股份有限公司 | DBB valve leak detecting device |
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