CN2188757Y - Pressure testing apparatus - Google Patents
Pressure testing apparatus Download PDFInfo
- Publication number
- CN2188757Y CN2188757Y CN 94207108 CN94207108U CN2188757Y CN 2188757 Y CN2188757 Y CN 2188757Y CN 94207108 CN94207108 CN 94207108 CN 94207108 U CN94207108 U CN 94207108U CN 2188757 Y CN2188757 Y CN 2188757Y
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- China
- Prior art keywords
- pressure
- gas
- valve
- holder
- testing apparatus
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- Expired - Fee Related
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Abstract
The utility model provides a pressure testing apparatus which can fast test whether tank valves are normal or not. The pressure generator of the pressure testing apparatus adopts a civil freezer compressor and is installed in a casing. A pipeline adopts a minor diameter copper tube. A valve adopts a three-way valve. A pressure indicator adopts a digital pressure indicator. The pressure testing apparatus is also provided with an overpressure alarm. The lower side of the casing is provided with a rolling wheel. The utility model has the advantages of simple structure, small size, low cost, visual reading, and convenient transportation. The pressure testing apparatus is suitable for doing automatic test work for respiratory valves in oil depots and petrol stations.
Description
The utility model proposes a kind of device of positive and negative opening pressure that can the fast detecting tank valves, belong to the improvement of pressure-detecting device.
Vacuum pressure valve is the auxiliary device of oil tank, is installed in the oil tank top, when oil tank is received and dispatched oily operation, is used for exchange of air.It is opened during higher or vacuum at the oil tank inner air pressure, is a kind of safety-valve that prevents accident, and manufacturing test stone is SY7511-87.
The device of the existing detection vacuum pressure valve that generally uses as shown in Figure 4, it is made up of pressure generator (33), pipe system (3 and 8), valve (2 and 12), gas-holder (11) and pressure indicator (10) etc.Pressure generator (33) is made up of motor, forcing pump, vacuum pump etc.; Pipe system (3 and 8) is made up of gas piping and stop valve; Gas-holder (11) is welded by steel plate; Pressure indicator (10) generally adopts U type microbarograph or tilting micromanometer, its course of work is: the pressure gas (32) that is produced by pressure generator (33) is through pipeline (20), valve (21), pipeline (22), enter gas-holder (30), the interior gas of gas-holder (30) communicates with tested vacuum pressure valve (24) by taking over (28), and the gas in the gas-holder (30) shows on microbarograph (29) by pipeline (27), valve (31).Valve (26) is an atmospheric valve.Its major defect is:
1, the parts of decomposition pressure generator are many, installation is complicated, cost is high, maintenanceability is poor.
2, the pipe system valve adopts stop valve, valve quantity many.
3, the pressure indicator volume is big, fragile, precision is low, reading is inconvenient.
4, huge, the inconvenience transportation of whole device volume only is fit to factory and uses.
The purpose of this utility model provide a kind of light, be fit to that oil depot uses, volume is little, cost is low, the vacuum pressure valve pick-up unit of convenient transportation.
The purpose of this utility model is achieved in that
1, pressure generator is selected civilian freezer compressor for use.This compressor is former to be used to compress freon and to carry out liquid phase-gas phase conversion, the existing pressurized air that is used for merely.
2, pipeline adopts the minor diameter copper tube, and valve adopts T-valve.
3, pressure indicator has adopted miniature silicon pressure sensor, digital pressure indicator, can read the positive/negative pressure value.
4, warning device is housed, when air pressure exceeds the pressure indicator predetermined pressure, can sounds, report to the police.
5, pressure generator is positioned at enclosure interior, and pressure indicator is positioned at the top of gas-holder.
The utility model has the advantages that:
1, pressure generator not only can be suppressed but also can produce vacuum, compares with original structure, can reduce by a pump, and pressure generator simple in structure, volume is little, cost is low.
2, reduced the quantity of valve.
3, pressure indicator precision height, reading is directly perceived, volume is little.
4, whole apparatus structure is simple, easy to operate, transportation is easy, is particularly suitable for using when vacuum pressure valve detects voluntarily in oil depot, refuelling station.
The utility model will be further described below in conjunction with accompanying drawing:
Fig. 1 is the general structure synoptic diagram of pressure-detecting device.
Fig. 2 is the gas circuit synoptic diagram of pressure-detecting device when vacuumizing.
Fig. 3 is the gas circuit synoptic diagram of pressure-detecting device when suppressing.
Fig. 4 is the structural representation of current stress pick-up unit.
Referring to Fig. 1, as seen from the figure, this device is made up of pressure generator (1), T-valve (2 and 3), gas pipeline (4 and 5), gas-holder (6), power lead sheath (7), electric wire (8), three half word pressure indicators (9), pressure transducer (10), power switch (11 and 12), attaching plug (13), roller (14), housing (15), pressure detection interface (16) and handrail (17) etc.Wherein, pressure generator (1) is fixed on housing (15) inside with screw (19), and it communicates with cylinder (6) by T-valve (2 and 3), pipeline (4); Valve (2 and 3) is fixed on the housing (15) with nut; Gas-holder (6) is welded on the top of housing (15); Pressure detection interface (16) is a standard flange, is welded on the housing (15); Pressure transducer (10) is miniature silicon pressure sensor, is welded on the circuit board of pressure indicator (9), and pressure indicator (9) and pressure transducer (10) are fixed by bolts to the top of gas-holder (6) together; Measure the top that interface (16) is positioned at housing (15), a side of gas-holder (6); Pipeline (5) is equipped with in the bottom of gas-holder (6), and it communicates with measurement interface (16).Between pressure generator (1) and the gas-holder (6), have pipeline to link to each other between gas-holder (6) and the pressure transducer (10); There are three or four rollers that are attached thereto with bolt (14) in below in housing (15); Device uses 220 volts of AC power; Gas-holder (6) is gone up a welding handrail (17), whole device can by handrail (17) easily push-and-pull advance.
Referring to Fig. 2, as seen from the figure, the principle of work that this device vacuumizes is: tested vacuum pressure valve (18) is fixed by bolts to be measured on the interface (16).Fig. 2 setting is pressed in the position of T-valve (2 and 3), connect with the mains (13), press switch (11,12) after, pressure generator (1) is started working.Air enters pipe logical (4) by gas-holder (6), enters pressure generator (1) by T-valve (3), discharges from pressure generator (1) again, discharges outside pipeline through valve (2).Like this, very fast formation vacuum in the gas-holder (6).The pressure size of the interior air of gas-holder (6) converts electric signal to by sensor (10), and input digit pressure indicator (9) shows then.Air pressure in the gas-holder (6) communicates with measured vacuum pressure valve (18) by managing (5), when the air pressure in the gas-holder (6) drops to the design load of tested vacuum pressure valve (18), tested vacuum pressure valve (18) is opened, at this moment the pressure in the gas-holder (6) will be kept balance, the reading of pressure indicator (9) will remain unchanged, and the reading of this moment is the negative pressure unlatching value of tested vacuum pressure valve (18).When the negative pressure of vacuum pressure valve (18) is not opened above the design pressure value, pressure in the gas-holder (6) continues to descend, force value shows by pressure indicator (9), this indicator is equipped with warning device on (9), when the numerical value that shows surpass a certain predetermined value (as-500Pa) time, pressure indicator (9) warning of will sounding reminds the operator to cut off the electricity supply, the maintenance vacuum pressure valve.
Referring to Fig. 3, the principle of work suppressed of this device as seen from the figure: Fig. 3 setting is pressed in the position of T-valve (2 and 3), connect with the mains (13), press switch (11,12) after, pressure generator (1) is started working.Air enters pipeline (4) by T-valve (2), enters pressure generator (1), discharges from pressure generator (1) again, enters gas-holder (6) through T-valve (3).Like this, the very fast rising of pressure in the gas-holder (6).The air pressure size of gas-holder (6) converts electric signal to by sensor (10), and input digit pressure indicator (9) shows.Air pressure in the gas-holder (6) communicates with measured vacuum pressure valve (18) by managing (5).When the air pressure in the gas-holder (6) rises to the design load of tested vacuum pressure valve (18), tested vacuum pressure valve (18) is opened, at this moment the pressure in the gas-holder (6) will be kept balance, the reading of pressure indicator (9) will remain unchanged, and the reading of this moment is the malleation unlatching value of tested vacuum pressure valve (18).When the malleation of vacuum pressure valve (18) is not opened above the design pressure value, pressure in the gas-holder (6) continues to rise, force value shows by display (9), when the numerical value that shows surpass certain certain value (as+1999Pa) time, pressure display unit (9) warning of will sounding, remind the operator to cut off the electricity supply, maintenance vacuum pressure valve (18).
Above-mentioned accompanying drawing and explanation thereof have provided embodiment of the present utility model.
Claims (4)
1, a kind of pressure-detecting device of being made up of gas-holder (6), measurement interface (16) is characterized in that it also has with lower member:
A: the pressure generator of forming by freezer compressor (1);
B: the valve of forming by T-valve (2 and 3);
C: the pressure indicator of forming by digital pressure indicator (9);
D: the pipeline of forming by the minor diameter copper tube (4 and 5);
Their annexation is: pressure generator (1) is positioned at housing (15), be fixed on the housing (15) with bolt (19), pressure generator (1) communicates with gas-holder (6) by T-valve (2 and 3), pipeline (4), gas-holder (6) is welded on housing (15) top, pressure indicator (9) is fixed by bolts to the top of gas-holder (6) with sensor (10), measure the top that interface (16) is positioned at housing (15), one side of gas-holder (6), pipeline (5) is equipped with in gas-holder (6) bottom, and it communicates with measurement interface (16).
2, pick-up unit according to claim 1 is characterized in that sensor (10) is miniature silicon pressure sensor.
3, pick-up unit according to claim 1 is characterized in that pressure indicator (9) is equipped with the warning device that exceeds predetermined pressure.
4, pick-up unit according to claim 1 is characterized in that below the housing (15) 3 or 4 rollers (14) being installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94207108 CN2188757Y (en) | 1994-03-24 | 1994-03-24 | Pressure testing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94207108 CN2188757Y (en) | 1994-03-24 | 1994-03-24 | Pressure testing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2188757Y true CN2188757Y (en) | 1995-02-01 |
Family
ID=33825536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94207108 Expired - Fee Related CN2188757Y (en) | 1994-03-24 | 1994-03-24 | Pressure testing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2188757Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062100A (en) * | 2013-03-19 | 2014-09-24 | 中国石油天然气股份有限公司 | Oil storage tank breathing valve positive and negative pressure generator |
| CN106224631A (en) * | 2016-07-19 | 2016-12-14 | 中国人民解放军总后勤部油料研究所 | A kind of breather valve on-line measuring device and method |
-
1994
- 1994-03-24 CN CN 94207108 patent/CN2188757Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062100A (en) * | 2013-03-19 | 2014-09-24 | 中国石油天然气股份有限公司 | Oil storage tank breathing valve positive and negative pressure generator |
| CN106224631A (en) * | 2016-07-19 | 2016-12-14 | 中国人民解放军总后勤部油料研究所 | A kind of breather valve on-line measuring device 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 |