CN208921380U - DBB valve leak detecting device - Google Patents

DBB valve leak detecting device Download PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
valve
dbb
shut
pressure
leak detecting
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.)
Active
Application number
CN201821541085.4U
Other languages
Chinese (zh)
Inventor
王梅松
冯志强
崔广伟
王建军
尉忠友
吴斌斌
邢勐
毕海鹏
张宝良
窦贺通
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.)
Nanjing Tianti Automation Equipment Co Ltd
China Petroleum and Chemical Corp
Original Assignee
Nanjing Tianti Automation Equipment Co Ltd
China Petroleum and Chemical Corp
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 Nanjing Tianti Automation Equipment Co Ltd, China Petroleum and Chemical Corp filed Critical Nanjing Tianti Automation Equipment Co Ltd
Priority to CN201821541085.4U priority Critical patent/CN208921380U/en
Application granted granted Critical
Publication of CN208921380U publication Critical patent/CN208921380U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Examining Or Testing Airtightness (AREA)

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

DBB valve leak detecting device
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).
CN201821541085.4U 2018-09-20 2018-09-20 DBB valve leak detecting device Active CN208921380U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821541085.4U CN208921380U (en) 2018-09-20 2018-09-20 DBB valve leak detecting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821541085.4U CN208921380U (en) 2018-09-20 2018-09-20 DBB valve leak detecting device

Publications (1)

Publication Number Publication Date
CN208921380U true CN208921380U (en) 2019-05-31

Family

ID=66706395

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821541085.4U Active CN208921380U (en) 2018-09-20 2018-09-20 DBB valve leak detecting device

Country Status (1)

Country Link
CN (1) CN208921380U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN204694421U (en) Valve leak detection proving installation
CN104359661B (en) universal valve performance test device
CN110987324A (en) Fuel cell air tightness testing device and testing method
CN202748203U (en) Automobile air inlet system component integrated testing apparatus
CN106872155A (en) A kind of performance of exhaust valve test system and method for testing
CN208921380U (en) DBB valve leak detecting device
CN202066654U (en) Air-tightness measurement device
RU2558008C2 (en) Double insulation for two-chamber differential pressure gauge
CN205049302U (en) High pressure valve sealing performance detection device
CN202092840U (en) Leak detection system of gas flow standard device
CN204043747U (en) Differential pressure type device for measuring volume
CN106370243B (en) Orifice device and method for removing orifice plate from or installing orifice plate in orifice device
CN207005310U (en) A kind of butterfly valve flange and butterfly valve that can be used for leakage early warning and monitoring
CN108956057A (en) DBB valve leak detecting device
CN108933269B (en) Device and method for detecting stack blow-by gas flow of proton exchange membrane fuel cell
CN204461693U (en) For the visual leakage detection apparatus leaked in the heat exchanger of food processing
CN202676412U (en) Shut-off valve leakage rate on-line detection device
CN202329953U (en) Device for on-line checking of trace leakage inside valve
CN203298924U (en) Mechanism for protecting micro differential pressure sampling measuring instrument in pressure generation system micro differential pressure measurement
CN109443732A (en) More gas circuit state monitoring apparatus and method
CN213120998U (en) Multifunctional fuel cell stack leak hunting platform
CN202708158U (en) Double ball valves containing plate valve, and detection air path using the same
CN102749180A (en) On-line leak rate detection device for stop valve
CN102563201A (en) Device for eliminating leakage risk of gas gate valve online
CN103808449A (en) Mechanism for measuring micro differential pressure of pressure generation system and protecting micro differential pressure sampling measuring instrument

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant