CN205102988U - Valve valve stem packing department gas leak detection device - Google Patents
Valve valve stem packing department gas leak detection device Download PDFInfo
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- CN205102988U CN205102988U CN201520745690.3U CN201520745690U CN205102988U CN 205102988 U CN205102988 U CN 205102988U CN 201520745690 U CN201520745690 U CN 201520745690U CN 205102988 U CN205102988 U CN 205102988U
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- valve
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- leak detection
- gas leak
- tank
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Abstract
The utility model provides a valve valve stem packing department gas leak detection device adopts the device of the detection valve valve stem packing department gas leakage that hydrophobic diaphragm and air detector constitute, and the device includes: screw that the fixed check out test set of hydrophobic diaphragm, basin, sealing washer, several was used and utilize the air detector that the ultrasonic wave made. Through hydrophobic diaphragm with liquid encapsulation in the device's basin, from the valve stem packing leak gaseous under through in the hydrophobic diaphragm entering basin, air detector detection bubble is recycled to gassing in basin liquid to the realization is to valve stem packing department gas leak detection. This test device has simple structure, and convenient operation can realize characteristics such as real -time supervision.
Description
Technical field
The utility model belongs to valve technology field, is specifically related to a kind of test unit detecting valve rod filler place Leakage Gas.
Background technology
Valve is the important component part of gas pipe line, and the valve invalidation of key position can cause the difficulty of production operation, increase accident probability, run to safety in production and bring potential accident potential, and the topmost failure mode of valve is leakage failure.
The economic loss that different leakage form causes and different because of the difference of the characteristic of medium again to the pollution level of environment.If gas medium, be then easy to diffusive transport in atmosphere, its pollution radius will be larger.Common medium is that the valve leak form of gas mainly comprises: valve packing place leaks, and valve body and valve gap leakage, sealing face leakage, O-ring seal leak, closing member leaks and flange connections leaks, and main still filler place leaks.Valve rod filler place Leakage Gas is modal in various device, is also the most formidable fault.
The method detecting valve rod filler place Leakage Gas can be summed up as following several: heard and use the method for very thin little rod test by nose, by each seal members of leak detection fluid inspection such as gas detecting instrument detection, use suds, if there is continuous print soap bubble to produce, then illustrate that valve exists to leak, can being judged by the screak whether having escaping air to send, snarl junction viewing film situation with plastic sheeting or adhesive tape, by detecting valve rod and the change of filler surface in contact lubricant charge door place pressure, judging whether to occur leakage.This several method may be used for judging whether to occur leakage, but operability is not strong.
At present, also there is serious technological deficiency and blank for the test unit of valve stem packing place Leakage inspection and test method.For ensureing the security of valve in operational process, be necessary very much to design a kind of equipment or the instrument that detect valve stem packing place Leakage Gas, for the safety in production of valve provides safeguard.
Utility model content
For above-mentioned prior art Problems existing and actual demand, the purpose of this utility model is to provide a kind of valve rod filler place gas leak detection apparatus.Use the device of the utility model design can detect valve rod filler place Leakage Gas situation fast and effectively, also can carry out Real-Time Monitoring, ensure the safe reliability in valve operational process.
The technical solution of the utility model is as follows:
A kind of valve rod filler place gas leak detection apparatus, it is characterized in that, described pick-up unit is arranged on valve, described pick-up unit comprises boss 15, the tank 19 that surrounding encloses is set in described boss 15, described tank 19 is through to boss 15 upper surface by boss 15 lower surface, arranges the upper hydrophobic diaphragm 6 being used for enclosing liquid and lower hydrophobic diaphragm 8 at the two ends of described tank 19; In described boss 15 both sides, air detectors 20 is set.
Further, described hydrophobic diaphragm 6 and lower hydrophobic diaphragm 8 are bonding by glue at the two ends of tank 19.
According to a kind of valve rod filler place described in the utility model gas leak detection apparatus, preferably, described tank 19 is the right cylinder of cylinder, preferred angled, and the round hole axial of cylinder tank and boss lower surface are 30-50 ° of angle.
According to a kind of valve rod filler place described in the utility model gas leak detection apparatus, preferably, described pick-up unit is the semicircular structure being provided with axis hole 17, arranges boss 15 at the straight line of semicircle, and described axis hole 17 is coaxially installed with gland 3 cylindrical of valve.
Further, described pick-up unit and gland 3 contact position arrange O-ring seal 1, prevent gas from leaking along gland 3 surface of contact.
Further, arrange internal channel 1 at the inside surface of the axis hole 17 of described pick-up unit, described O-ring seal 1 is arranged in described internal channel 1; Described internal channel 1 2-200mm above the aperture of tank 19 lower end.
According to a kind of valve rod filler place described in the utility model gas leak detection apparatus, preferably, the lower surface of described pick-up unit and valve gap 10 surface contact of valve, arrange O-ring seal 27 in contact position, prevent gas from leaking along valve gap 10 surface of contact of valve.
Further, the lower surface contacted with valve cover surfaces at described pick-up unit arranges internal channel 2 22, and described O-ring seal 27 is arranged in internal channel 2 22; Described internal channel 2 22 is at the aperture circumferentially external diameter direction 2-200mm of tank 19 lower end.
According to a kind of valve rod filler place described in the utility model gas leak detection apparatus, preferably, described upper hydrophobic diaphragm 6 and lower hydrophobic diaphragm 8 are super-hydrophobic ceramic membrane, and described super-hydrophobic ceramic membrane is obtain after inorganic ceramic membrane hydrophobically modified; Described super-hydrophobic ceramic membrane, under the pressure test of 0-6.5bar, water flux is zero.
Further, described hydrophobic diaphragm 6 and lower hydrophobic diaphragm 8 are bonding by glue at the place of two apertures up and down of tank 19.
According to a kind of valve rod filler place described in the utility model gas leak detection apparatus, preferably, described pick-up unit arranges several screw, described pick-up unit is fixedly connected on valve by being spirally connected, and is preferably screwed.
The application also provides a kind of valve rod filler place gas leak detection method, described pick-up unit is arranged on the valve gap of valve, has the gas of leakage to enter tank 19 through lower hydrophobic diaphragm 8, then discharge through upper hydrophobic diaphragm 6 from valve stem packing; Entering the gas of tank 19, in the liquid of tank, produce bubble, there is energy attenuation in the receiving end ultrasonic transducer 28 observing air detectors 20, and air detectors 20 can export bubble and produce signal.
Further, the material of described pick-up unit is steel or organic material.
Further, described water bath is water or other nontoxic media.
Utility model describes in detail:
Detection valve rod filler place described in the utility model Leakage Gas device, described test unit comprises: a lab-size equipment tank 19, this tank 19 is the right cylinders tilted, there are upper hydrophobic diaphragm 6 for enclosing liquid 27 and lower hydrophobic diaphragm 8 in tank 19 two, device there are the O-ring seal 5 and O-ring seal 7 that prevent Leakage Gas, several bolt hole 11 for fixing this pick-up unit and gland, nut 1 and nut 2 13, the air detectors 20 that ultrasonic bubble detecting sensor is made, air detectors 20 is screwed at valve gap upper surface, be distributed in device boss 15 both sides.
Detection valve rod filler place described in the utility model Leakage Gas device, this device is arranged on valve gap 10 upper surface, this structure drawing of device is as the semi-circular structure in Fig. 2, the material of this device is steel or organic material, device boss 15 place opens a circular hole tank 19 tilted, flume channel is through to boss 15 upper surface by device boss 15 lower surface, cylinder tank round hole axial and lower surface are 30-50 ° of angle, ensure that the ultrasound wave that sends of air detectors 20 can through-fall tank liquid 27 thus carry out bubble detection at an angle, test unit lower surface contacts with valve gap 10 upper surface.At tilted cylindrical envelope tank 19 two apertures place, hydrophobic diaphragm 6 and lower hydrophobic diaphragm 8 are installed, upper hydrophobic diaphragm 6 and lower hydrophobic diaphragm 8 are bonding by glue at the place of two apertures up and down of tank 19, upper hydrophobic diaphragm 6 and lower hydrophobic diaphragm 8 by liquid-packing in tank 19.The gas leaked from valve stem packing 9 enters water bath 27 through lower hydrophobic diaphragm 8, then discharges through upper hydrophobic diaphragm 6.Gas enters tank 19, produces bubble 25 in water bath 27, and energy attenuation appears in the receiving end ultrasonic transducer 28 observing air detectors 20, and air detectors 20 exports has bubble to produce signal.
Upper hydrophobic diaphragm 6 and the lower hydrophobic diaphragm 8 of pick-up unit described in the utility model adopt super-hydrophobic ceramic membrane; Described hydrophobic diaphragm 6 and lower hydrophobic diaphragm 8 all adopt inorganic ceramic membrane, utilize organism Graft Method to carry out hydrophobically modified to ceramic membrane surface, change ceramic membrane surface into hydrophobicity by water wettability.Before inorganic ceramic membrane hydrophobically modified, hydrone can penetrate ceramic membrane, and along with pressure increases, water flux presents approximate direct proportion elevational relationship.After hydrophobically modified, under the pressure test of 0-6.5bar, water flux is zero.When pressure is greater than 6.5bar, start have hydrone to pass diaphragm.
Axis hole 17 and gland 3 cylindrical of pick-up unit described in the utility model are coaxially installed;
Pick-up unit described in the utility model is provided with multiple screw 18, the aperture of itself and bolt hole 11, quantity and position consistency, ensure that it can coordinate to install to fix, screw 18 on pick-up unit is through holes, stud there are nut 12 and nut 13, the nut 13 of middle part for compressing pick-up unit 16, above nut 12 for clamping platen 2.
O-ring seal 5 is equipped with in pick-up unit described in the utility model and gland 3 contact position, prevents gas from leaking along gland 3 surface of contact;
O-ring seal 7 is equipped with at pick-up unit lower surface described in the utility model and valve gap 10 surface contact place, prevents gas from leaking along valve gap 10 surface of contact;
Further described O-ring seal 5 is arranged in the internal channel 21 of this device, internal channel 21 at axis hole 17 inside surface, about 2-200mm above tank 19 times apertures;
Further described O-ring seal 7 is arranged in the lower surface internal channel 22 of valve cover surfaces contact, and internal channel 22 is about 2-200mm in tank 19 circular hole passage lower opening opening's edge circumference external diameter direction.
Described air detectors 20 utilizes ultrasonic bubble detecting sensor to make;
Ultrasonic bubble sensor Cleaning Principle (Fig. 4) described in the utility model: ultrasonic transducer chip package sky in of transmitting terminal and receiving end is in columniform housing, after ultrasound wave sends from transmitting terminal, its small portion is by sensor outer housing 23 diffuse reflection, major part is through housing, through air-gap, enter in water bath 27 through channel wall 26 again.In above-mentioned transmitting procedure, fraction energy loses in air-gap, and part is attenuated by the structure influence of channel wall 26 material in addition, and most of energy is transferred to the ultrasonic transducer 28 of receiving end in water bath 27.If do not have bubble in water bath 27, liquid 27 density is relatively stable, and the signal that receiving end receives almost does not have large distortion.If there is the bubble 25 differed in size in water bath 27, liquid 27 density can reduce, and the energy that the ultrasonic transducer 28 of receiving end receives can be decayed, and signal waveform produces distortion, amplitude diminishes, its attenuation degree and the time how much relevant with Air Bubble Size, shape and bubble.After the energy attenuation signal that receiving end receives, air detectors 20 exports bubble and produces signal.
Advantageous Effects of the present utility model:
The utility model provides a kind of valve rod filler place gas leak detection apparatus, use the apparatus and method of the utility model design can detect valve rod filler place Leakage Gas situation fast and effectively, also can carry out Real-Time Monitoring, ensure the safe reliability in valve operational process.Pick-up unit described in the utility model: structure is simple, easy to operate, can realize Real-Time Monitoring, ensures valve safe and stable operation.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation that described pick-up unit is installed on valve.
Accompanying drawing 2 is the vertical view of the structural representation of described pick-up unit.
Accompanying drawing 3 is the left view of the complete section of the structural representation of described pick-up unit.
Accompanying drawing 4 is ultrasonic bubble sensor Cleaning Principle structural drawing.
Accompanying drawing 5 is applied to the schematic diagram of stop valve for this pick-up unit.
Description of reference numerals:
1-valve rod; 2-pressing plate; 3-gland; 4-O-ring seal three; 5-O-ring seal one; 6-upper hydrophobic diaphragm; 7-O-ring seal two; 8-lower hydrophobic diaphragm; 9-valve stem packing; 10-valve gap; 11-bolt hole; 12-nut one; 13-nut two; 14-pick-up unit installation site; 15-pick-up unit boss; 16-pick-up unit; 17-axis hole; 18-screw; 19-tank; 20-air detectors; 21-groove one; 22-groove two; 23-sensor outer housing; 24-ultrasonic transmit circuit; 25-bubble; 26-channel wall; 27-water bath; 28-receiving end ultrasonic transducer; 29-ultrasound wave accepts circuit; 30-stop valve entrance point; 31-stop valve endpiece; 32-stop valve clack; 33-stop valve valve gap; 34-pick-up unit; 35-stop valve pressing plate.
Embodiment
In order to understand the utility model better, illustrate content of the present utility model further below in conjunction with drawings and Examples, but content of the present utility model is not only confined to the following examples.
The utility model provides a kind of valve rod filler place gas leak detection apparatus, be arranged on valve, pick-up unit comprises boss 15, the tank 19 that surrounding encloses is set in boss 15, tank 19 is the right cylinder tilted, be through to boss 15 upper surface by boss 15 lower surface, the round hole axial of cylinder tank and boss lower surface are 30-50 ° of angle.Arrange the upper hydrophobic diaphragm 6 being used for enclosing liquid and lower hydrophobic diaphragm 8 at the two ends of tank 19, upper hydrophobic diaphragm 6 and lower hydrophobic diaphragm 8 are bonding by glue at the place of two apertures up and down of tank 19; In boss 15 both sides, air detectors 20 is set.Upper hydrophobic diaphragm 6 and lower hydrophobic diaphragm 8 are bonding by glue at the two ends of tank 19.Described pick-up unit is the semicircular structure being provided with axis hole 17, arranges boss 15 at the straight line of semicircle, and described axis hole 17 is coaxially installed with gland 3 cylindrical of valve.Pick-up unit and gland 3 contact position arrange O-ring seal 1, prevent gas from leaking along gland 3 surface of contact.Arrange internal channel 1 at the inside surface of the axis hole 17 of pick-up unit, O-ring seal 1 is arranged in described internal channel 1; Internal channel 1 is about 2-200mm above the aperture of tank 19 lower end.The lower surface of described pick-up unit and valve gap 10 surface contact of valve, arrange O-ring seal 27 in contact position, prevent gas from leaking along valve gap 10 surface of contact of valve.The lower surface contacted with valve cover surfaces at pick-up unit arranges internal channel 2 22, and described O-ring seal 27 is arranged in internal channel 2 22; Described internal channel 2 22 is circumferentially about 2-200mm in external diameter direction in the aperture of tank 19 lower end.Upper hydrophobic diaphragm 6 and lower hydrophobic diaphragm 8 are super-hydrophobic ceramic membrane, and described super-hydrophobic ceramic membrane is obtain after inorganic ceramic membrane hydrophobically modified; Described super-hydrophobic ceramic membrane, under the pressure test of 0-6.5bar, water flux is zero.Described pick-up unit arranges several screw, and described pick-up unit is fixedly connected on valve by being spirally connected.
Embodiment
With reference to Fig. 5, the utility model is for detecting stop valve valve stem packing place Leakage Gas.Stop valve used is of a size of 4 cun, and described pick-up unit material therefor is organic glass, and the liquid medium be encapsulated in tank 19 is water.
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 5, described pick-up unit is arranged on stop valve.Because described pick-up unit adopts material to be organic glass structure, valve stem packing place has Leakage Gas, can see can produce bubble 25 in water bath 27, and can show energy attenuation situation of change in receiving end ultrasonic transducer 28.During use, stop valve clack 32 keeps closed condition, pressurizes at stop valve endpiece 31.Now, valve stem packing 9 pressurized.When stop valve endpiece 31 pressure is less, do not produce bubble in this pick-up unit water bath 27, air detectors 20 has not exported bubble yet and has produced signal; Stop valve endpiece 31 pressure increases, and valve stem packing 9 pressure is increasing, when pressure is increased to 1MPa, produces bubble 25 in water bath 27, and air detectors 20 exports has bubble to produce signal, proves that now valve stem packing 9 place there occurs leakage.
Record this test findings, off-test.
Find out from above-described embodiment, whole test process is more stable, and test result is effective.
Compared with existing pick-up unit, this device can detect the Leakage Gas situation at valve rod filler place in real time.
Claims (9)
1. a valve rod filler place gas leak detection apparatus, it is characterized in that, described pick-up unit is arranged on valve, described pick-up unit comprises boss (15), the tank (19) that surrounding encloses is set in described boss (15), described tank (19) is through to boss (15) upper surface by boss (15) lower surface, arranges the upper hydrophobic diaphragm (6) being used for enclosing liquid and lower hydrophobic diaphragm (8) at the two ends of described tank (19); In described boss (15) both sides, air detectors (20) is set.
2. a kind of valve rod filler place gas leak detection apparatus according to claim 1, it is characterized in that, described tank (19) is cylinder, and the round hole axial of cylinder tank and boss lower surface are 30-50 ° of angle.
3. a kind of valve rod filler place gas leak detection apparatus according to claim 1, it is characterized in that, described pick-up unit is for being provided with the semicircular structure of axis hole (17), arrange boss (15) at the straight line of semicircle, described axis hole (17) is coaxially installed with gland (3) cylindrical of valve.
4. a kind of valve rod filler place gas leak detection apparatus according to claim 1, it is characterized in that, described pick-up unit and gland (3) contact position arrange O-ring seal one (5), prevent gas from leaking along gland (3) surface of contact.
5. a kind of valve rod filler place gas leak detection apparatus according to claim 4, it is characterized in that, arrange internal channel one (21) at the inside surface of the axis hole (17) of described pick-up unit, described O-ring seal one (5) is arranged in described internal channel one (21); Described internal channel one (21) 2-200mm above the aperture of tank (19) lower end.
6. a kind of valve rod filler place gas leak detection apparatus according to claim 1, it is characterized in that, the lower surface of described pick-up unit and valve gap (10) surface contact of valve, O-ring seal two (7) is set in contact position, prevents gas from leaking along valve gap (10) surface of contact of valve.
7. a kind of valve rod filler place gas leak detection apparatus according to claim 6, it is characterized in that, the lower surface contacted with valve cover surfaces at described pick-up unit arranges internal channel two (22), and described O-ring seal two (7) is arranged in internal channel two (22); Described internal channel two (22) is at the aperture circumferentially external diameter direction 2-200mm of tank (19) lower end.
8. a kind of valve rod filler place gas leak detection apparatus according to claim 1, it is characterized in that, described pick-up unit arranges several screw, and described pick-up unit is fixedly connected on valve by being spirally connected.
9. a kind of valve rod filler place gas leak detection apparatus according to claim 1, it is characterized in that, described pick-up unit arranges several screw, and described pick-up unit is fixedly connected on valve by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520745690.3U CN205102988U (en) | 2015-09-23 | 2015-09-23 | Valve valve stem packing department gas leak detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520745690.3U CN205102988U (en) | 2015-09-23 | 2015-09-23 | Valve valve stem packing department gas leak detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205102988U true CN205102988U (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520745690.3U Expired - Fee Related CN205102988U (en) | 2015-09-23 | 2015-09-23 | Valve valve stem packing department gas leak detection device |
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| CN (1) | CN205102988U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106033022A (en) * | 2016-05-16 | 2016-10-19 | 华东理工大学 | Pipe valve and detection device for leakage of medium at filler position thereof |
| CN106052969A (en) * | 2015-09-23 | 2016-10-26 | 方正阀门集团有限公司 | Device and method for detecting gas leakage at packing of valve rod of valve |
| CN106959194A (en) * | 2017-05-26 | 2017-07-18 | 中国特种设备检测研究院 | Leakage monitoring method for bolted flange joints |
| CN107084271A (en) * | 2017-06-09 | 2017-08-22 | 浙江万龙机械有限公司 | A kind of ammonia leaks intelligence control valve |
| CN108267272A (en) * | 2016-12-30 | 2018-07-10 | 天津市赫恩思体育用品有限公司 | One bulb liner air-tightness detection device |
| CN111963741A (en) * | 2020-08-17 | 2020-11-20 | 杭州富阳精力阀门有限公司 | Full-lining fluorine self-operated micro-pressure regulating valve |
-
2015
- 2015-09-23 CN CN201520745690.3U patent/CN205102988U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106052969A (en) * | 2015-09-23 | 2016-10-26 | 方正阀门集团有限公司 | Device and method for detecting gas leakage at packing of valve rod of valve |
| CN106052969B (en) * | 2015-09-23 | 2018-04-27 | 方正阀门集团有限公司 | Gas leak detection apparatus and method at a kind of valve rod filler |
| CN106033022A (en) * | 2016-05-16 | 2016-10-19 | 华东理工大学 | Pipe valve and detection device for leakage of medium at filler position thereof |
| CN108267272A (en) * | 2016-12-30 | 2018-07-10 | 天津市赫恩思体育用品有限公司 | One bulb liner air-tightness detection device |
| CN106959194A (en) * | 2017-05-26 | 2017-07-18 | 中国特种设备检测研究院 | Leakage monitoring method for bolted flange joints |
| CN107084271A (en) * | 2017-06-09 | 2017-08-22 | 浙江万龙机械有限公司 | A kind of ammonia leaks intelligence control valve |
| CN111963741A (en) * | 2020-08-17 | 2020-11-20 | 杭州富阳精力阀门有限公司 | Full-lining fluorine self-operated micro-pressure regulating valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 325000 no.1921 Binhai 1st Road, Wenzhou Economic and Technological Development Zone, Wenzhou City, Zhejiang Province Co-patentee after: EAST CHINA University OF SCIENCE AND TECHNOLOGY Patentee after: Founder Valve Group Co.,Ltd. Address before: Yongjia oubeizhen Wenzhou County of Zhejiang province 325102 city and industrial district Co-patentee before: EAST CHINA University OF SCIENCE AND TECHNOLOGY Patentee before: FANGZHENG VALVE GROUP Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160323 |
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| CF01 | Termination of patent right due to non-payment of annual fee |