CN101858818B - Testing device for detecting sealing property of delivery valve matching parts - Google Patents

Testing device for detecting sealing property of delivery valve matching parts Download PDF

Info

Publication number
CN101858818B
CN101858818B CN2010102049692A CN201010204969A CN101858818B CN 101858818 B CN101858818 B CN 101858818B CN 2010102049692 A CN2010102049692 A CN 2010102049692A CN 201010204969 A CN201010204969 A CN 201010204969A CN 101858818 B CN101858818 B CN 101858818B
Authority
CN
China
Prior art keywords
hole
pressure head
matching parts
sliding panel
detect
Prior art date
Application number
CN2010102049692A
Other languages
Chinese (zh)
Other versions
CN101858818A (en
Inventor
罗舒伟
黄益人
陆晓东
张志平
Original Assignee
南通星维油泵油嘴有限公司
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 南通星维油泵油嘴有限公司 filed Critical 南通星维油泵油嘴有限公司
Priority to CN2010102049692A priority Critical patent/CN101858818B/en
Publication of CN101858818A publication Critical patent/CN101858818A/en
Application granted granted Critical
Publication of CN101858818B publication Critical patent/CN101858818B/en

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2876Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M65/00Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
    • F02M65/006Measuring or detecting fuel leakage of fuel injection apparatus

Abstract

The invention relates to a testing device for detecting the sealing property of delivery valve matching parts. The testing device comprises a bottom plate, two upright posts, an upper cover plate, a cylinder, a connecting plate, a sliding plate, a pressure head, a gas collection pipe, a gas leakage detection device, a pedestal, a ventilation pipe and a ventilation device, wherein the pressure head is provided with a second through hole of which the upper end is provided with an upper washer; a first sealing ring is arranged between the pressure head and the sliding plate; the lateral end of the pressure head is provided with a gas collection cavity which is communicated with the gas collection pipe and a second through hole; the gas collection pipe is connected with the gas leakage detection device; the lower surface of the pressure head is provided with a second sealing ring; the upper part of the pedestal is provided with a notch; the lower part of the notch is provided with a lower washer; and one end of the ventilation pipe is connected with a third through hole, while the other end is connected with the ventilation device. The device can detect the sealing property between a delivery valve body and a delivery valve seat. Particularly, the gas leakage detection device comprises a water container, a burette and a stop watch and can accurately judge whether the delivery valve matching parts meet the technical requirements or not.

Description

A kind of test unit that is used to detect the valve matching parts sealing

Technical field

The present invention relates to a kind of test unit that is used to detect the component of machine sealing property, specifically, relate to a kind of test unit that is used to detect the valve matching parts sealing.

Background technology

Delivery valve matching parts is the vitals in the diesel fuel injection system, its effect is that the high-pressure diesel that will be provided by plunger matching parts transfers to injector assembly, when plunger matching parts stops supplying, high-pressure oil pipe and plunger upper end cavity is isolated, prevent that the oil in the high-pressure oil pipe from blowing back in the plunger matching parts.Delivery valve matching parts need carry out the conical surface seal detection, and its meaning is the fuel oil that guarantees to leave in the high-pressure oil pipe certain pressure, prevents that fuel oil from passing through the conical surface inflow plunger matching parts of even part, thereby guarantees that the diesel oil function runs well.Therefore, it is very necessary the sealing property of delivery valve matching parts being detected.

Summary of the invention

Technical matters to be solved by this invention provides a kind of test unit that is used to detect the valve matching parts sealing, accurately to detect the sealing property of delivery valve matching parts, guarantees its normal use in mechanical part.

For solving the problems of the technologies described above, the technical solution used in the present invention is:

A kind of test unit that is used to detect the valve matching parts sealing is characterized in that, comprises base plate, two columns, upper cover plate, cylinder, web joint, sliding panel, pressure head, discharge, gas leakage detection device, base, snorkel and aeration equipments; Fixedlying connected with base plate in the bottom of described two columns, is provided with first through hole between the upper surface of this base plate and the lower surface; Fixedly connected with upper cover plate in the top of these two columns; This upper cover plate is fixedly connected with a cylinder, and the piston rod on this cylinder passes the through hole on the upper cover plate, extends downwards; Fixedly connected with the upper end of web joint in the lower end of this piston rod; Fixedly connected with the upper surface of sliding panel in the lower end of this web joint; The two ends of this sliding panel are provided with a pilot hole respectively, and this pilot hole matches with column respectively, and sliding panel is moved up and down along column; The lower surface of this sliding panel is fixedlyed connected with the upper surface of pressure head; Be provided with the upper surface of connection pressure head and second through hole of lower surface in this pressure head, upper end at second through hole is provided with upper gasket, between the lower surface of the upper surface of this pressure head and sliding panel, be provided with first O-ring seal, and this first O-ring seal is positioned at the periphery of second through hole; The side of this pressure head is provided with air collecting chamber, this air collecting chamber connected set tracheae and second through hole; This discharge is connected with gas leakage detection device; The lower surface of this pressure head is provided with second O-ring seal, and this second O-ring seal is positioned at the periphery of second through hole; The upper surface of this base plate is fixedlyed connected with the lower surface of base; The top of this base is provided with groove, this groove bottom is provided with lower gasket, the lower surface of this groove is provided with third through-hole between the lower surface of base, this third through-hole is communicated with first through hole on the base plate, one end of this snorkel passes first through hole, be connected with third through-hole, the other end of this snorkel is connected with aeration equipment.

Described gas leakage detection device comprises the container, buret and the stopwatch that are filled with water; This buret is arranged in container, and the one end stretches out the water surface, and is connected with discharge; Its other end is positioned at the underwater.

Adopt technical scheme of the present invention, by being connected of base plate, two columns, upper cover plate, cylinder, web joint, sliding panel, pressure head, discharge, gas leakage detection device, base, snorkel and aeration equipments, can detect the sealing between fuel-displaced valve body and the delivery valve seat.Especially gas leakage detection device comprises the container, buret and the stopwatch that are filled with water.This buret is arranged in container, and the one end stretches out the water surface, and is connected with discharge; Its other end is positioned at the underwater.Utilize manual time-keeping, check in the certain hour, the fall of liquid level in the buret can accurately calculate the gas leakage rate of delivery valve matching parts, and then can judge accurately whether this delivery valve matching parts meets technical requirement.

Description of drawings

Fig. 1 is a cut-open view of the present invention.

Fig. 2 is the cut-open view of the delivery valve matching parts that is applied among the present invention.

Fig. 3 is the assembling synoptic diagram of a kind of gas leakage detection device among the present invention.

Fig. 4 is the assembling synoptic diagram of another kind of gas leakage detection device among the present invention.

Among the figure, 1, base plate, 100, first through hole, 2, column, 3, upper cover plate, 4, cylinder, 401, piston rod, 5, web joint, 6, sliding panel, 7, pressure head, 701, second through hole, 702, upper gasket, 703, air collecting chamber, 704, second O-ring seal, 705, cushion block, 8, discharge, 9, gas leakage detection device, 10, base, 101, groove, 102, lower gasket, 103, third through-hole, 11, snorkel, 12, aeration equipment, 13, first lining, 14, second lining, 15, fuel-displaced valve body, 1501, first end face, 1,502 second end faces, 16, delivery valve seat, 17, container, 18, buret.

Embodiment

As shown in Figure 1, a kind of test unit that is used to detect the valve matching parts sealing of the present invention comprises base plate 1, two columns 2, upper cover plate 3, cylinder 4, web joint 5, sliding panel 6, pressure head 7, discharge 8, gas leakage detection device 9, base 10, snorkel 11 and aeration equipments 12.Fixedly connected with base plate 1 in the bottom of two columns 2.Connection between the two can be adopted mechanical connection manner commonly used, and for example bolt connects.Be provided with first through hole 100 between the upper surface of base plate 1 and the lower surface.Fixedly connected with upper cover plate 3 in the top of two columns 2.A through hole is arranged in the upper cover plate 3, and this through hole is vertically arranged, is communicated with the upper surface and the lower surface of upper cover plate 3.The end face of upper cover plate 3 is fixedly connected with a cylinder 4, and the piston rod 401 on this cylinder 4 passes the through hole on the upper cover plate 3, extends downwards.Fixedly connected with the upper end of web joint 5 in the lower end of piston rod 401.Fixedly connected with the upper surface of sliding panel 6 in the lower end of web joint 5.The two ends of sliding panel 6 are provided with a pilot hole respectively.This pilot hole matches with two columns 2 respectively, and sliding panel 6 is moved up and down along column 2.The lower surface of sliding panel 6 is fixedlyed connected with the upper surface of pressure head 7.Be provided with the upper surface of connection pressure head 7 and second through hole 701 of lower surface in the pressure head 7.The upper end of second through hole 701 is provided with upper gasket 702.Be provided with first O-ring seal 706 between the lower surface of the upper surface of pressure head 7 and sliding panel 6, and first O-ring seal 706 is positioned at the periphery of second through hole 701.The side of pressure head 7 is provided with air collecting chamber 703.The air collecting chamber 703 connected set tracheaes 8 and second through hole 701.Discharge 8 is connected with gas leakage detection device 9.The lower surface of pressure head 7 is provided with second O-ring seal 704.Second O-ring seal 704 is positioned at the periphery of second through hole 701.The upper surface of base plate 1 is fixedlyed connected with the lower surface of base 10.The top of base 10 is provided with groove 101, and these groove 101 bottoms are provided with lower gasket 102.The lower surface of groove 101 is provided with third through-hole 103 between the lower surface of base 10.Third through-hole 103 is communicated with first through hole 100 on the base plate 1.One end of this snorkel 11 passes first through hole 100, is connected with third through-hole 103, and the other end of this snorkel 11 is connected with aeration equipment 12.

Fig. 2 is the sectional view of workpiece detected in this patent.Delivery valve matching parts comprises fuel-displaced valve body 15 and delivery valve seat 16, and fuel-displaced valve body 15 comprises first end face 1501 and second end face 1502.Being the conical surface between fuel-displaced valve body 15 and the delivery valve seat 16 connects.The sealing detection of this patent is exactly to detect the sealing that this conical surface connects.Use the method for this patent to be: the first step: delivery valve matching parts to be installed, and to be allowed cylinder 4 clamp delivery valve matching parts.Between the groove 101 and second through hole 701 in the pressure head 1 of delivery valve matching parts in base 10.Piston rod 401 on the cylinder 4 moves down, and second end face 1502 of delivery valve body 15 is contacted with upper gasket 702, and the snap-in force with between the two prevents gas leak; The end face of delivery valve seat 16 is contacted with second O-ring seal 704, and the snap-in force with between the two prevents gas leak; The bottom surface of delivery valve seat 16 is contacted with lower gasket 102.Second step: open aeration equipment 12, to pick-up unit ventilation certain hour.The 3rd step: observe gas leakage detection device 9, whether gas leak is arranged.The 4th step: stop ventilation, cylinder 4 moves upward, and takes out delivery valve matching parts.

The principle of work of this patent is: because the pressuring action of first sealing, 704 and second O-ring seal 706, detected gas can not revealed from pressure head 7 peripheries.If the sealing between fuel-displaced valve body 15 and the delivery valve seat 16 is good, then do not have leakage gas between the two, gas just can not enter in the discharge 8 yet.If the sealing between fuel-displaced valve body 15 and the delivery valve seat 16 is poor, then leakage gas between the two can enter in second through hole 701 of pressure head 7, and then flows into successively in air collecting chamber 703, discharge 8 and the gas leakage detection device 9.

Gas leakage detection device 9 described in this patent as shown in Figure 3, comprises the container 17 that fills water, and an end of discharge 8 inserts the underwater of this container 17.As detected gas when air collecting chamber 703 flows to the discharge 8, the detected gas of discharge 8 bubble of in container 17, can emerging.When not having detected gas when air collecting chamber 703 flows to the discharge 8, the water surface in the container 17 is tranquil.

For accurately calculating the amount of leakage of gas, as shown in Figure 4, gas leakage detection device 9 comprises the container 17, buret 18 and the stopwatch that are filled with water.This buret 18 is arranged in container 17, and the one end stretches out the water surface, and should be connected with discharge 8 by end.The other end of buret 18 is positioned at the underwater.When opening aeration equipment 12, open stopwatch simultaneously, calculate certain hour, 10 seconds for example, the height that the water surface descends in the buret 18, and then whether the leakage rate that calculates gas meets the technical requirement of delivery valve matching parts.

As a kind of improvement, second through hole 701 in the pressure head 7 also comprises cushion block 705 except comprising upper gasket 702, and this cushion block 705 is between upper gasket 702 tops and second through hole, 701 tops.By cushion block 705 is set, can with the fuel-displaced valve body 15 of upper gasket 702 common workpiece pressings, the size of snap-in force is determined by the thickness of cushion block 705.

Improve as another kind, lower gasket 102 is the Cowhells packing ring, and this lower gasket 102 has cavity, the third through-hole 103 on this cavity communication groove 101 and the base 10.The setting of this cavity helps detected gas and enters the delivery valve seat 16 from aeration equipment 12 rapidly.

Firm at base 10 for ease of delivery valve seat 16, damage is arranged first lining 13 at groove 101 inwalls of base 10 when avoiding delivery valve seat 16 to contact with base 10 simultaneously, and this first lining 13 is an annular, and its lateral surface and groove 101 inwalls fit.The lower end and lower gasket 102 outer rims of first lining, 13 medial surfaces fit.

For the pilot hole wall of avoiding sliding panel 6 to match with column 2 damages, in the pilot hole inwall at sliding panel 6 two ends, arrange one second lining 14 respectively in moving process.This second lining 14 is fixedly connected on respectively in the pilot hole inwall at sliding panel 6 two ends, and, the removable contact between second lining, 14 inwalls and column 2 outer walls.Because be furnished with pressure head 7 and web joint 5 on the sliding panel 6, their weight is bigger.For guaranteeing between sliding panel 6 and the column 2 rational friction force is arranged, the height of second lining 14 is greater than the height of sliding panel 6.Can guarantee the stability that leads like this.

Claims (8)

1. test unit that is used to detect the valve matching parts sealing, it is characterized in that, comprise base plate (1), two columns (2), upper cover plate (3), cylinder (4), web joint (5), sliding panel (6), pressure head (7), discharge (8), gas leakage detection device (9), base (10), snorkel (11) and aeration equipment (12);
Fixedlying connected with base plate (1) in the bottom of described two columns (2), is provided with first through hole (100) between upper surface of this base plate (1) and the lower surface; Fixedly connected with upper cover plate (3) in the top of these two columns (2); This upper cover plate (3) is fixedly connected with a cylinder (4), and the piston rod (401) on this cylinder (4) passes the through hole on the upper cover plate (3), extends downwards; Fixedly connected with the upper end of web joint (5) in the lower end of this piston rod (401); Fixedly connected with the upper surface of sliding panel (6) in the lower end of this web joint (5); The two ends of this sliding panel (6) are provided with a pilot hole respectively, and this pilot hole matches with column (2) respectively, and sliding panel (6) is moved up and down along column (2); The lower surface of this sliding panel (6) is fixedlyed connected with the upper surface of pressure head (7); Be provided with the upper surface of connection pressure head (7) and second through hole (701) of lower surface in this pressure head (7), be provided with upper gasket (702) in the upper end of second through hole (701), between the lower surface of the upper surface of this pressure head (7) and sliding panel (6), be provided with first O-ring seal (706), and this first O-ring seal (706) is positioned at the periphery of second through hole (701); The side of this pressure head (7) is provided with air collecting chamber (703), this air collecting chamber (703) connected set tracheae (8) and second through hole (701); This discharge (8) is connected with gas leakage detection device (9); The lower surface of this pressure head (7) is provided with second O-ring seal (704), and this second O-ring seal (704) is positioned at the periphery of second through hole (701); The upper surface of this base plate (1) is fixedlyed connected with the lower surface of base (10); The top of this base (10) is provided with groove (101), this groove (101) bottom is provided with lower gasket (102), the lower surface of this groove (101) is to being provided with third through-hole (103) between the lower surface of base (10), this third through-hole (103) is communicated with first through hole (100) on the base plate (1), one end of this snorkel (11) passes first through hole (100), be connected with third through-hole (103), the other end of this snorkel (11) is connected with aeration equipment (12).
2. according to the described test unit that is used to detect the valve matching parts sealing of claim 1, it is characterized in that described gas leakage detection device (9) comprises the container (17) that fills water, an end of discharge (8) inserts the underwater in this container.
3. according to the described test unit that is used to detect the valve matching parts sealing of claim 1, it is characterized in that described gas leakage detection device (9) comprises the container (17), buret (18) and the stopwatch that are filled with water; This buret (18) is arranged in container (17), and the one end stretches out the water surface, and is connected with discharge (8); Its other end is positioned at the underwater.
4. according to any one described test unit that is used to detect the valve matching parts sealing in the claim 1 to 3, it is characterized in that, also comprise cushion block (705), this cushion block (705) is positioned between upper gasket (702) top and second through hole (701) top.
5. according to the described test unit that is used to detect the valve matching parts sealing of claim 4, it is characterized in that, described lower gasket (102) is the Cowhells packing ring, and this lower gasket (102) has cavity, the third through-hole (103) on this cavity communication groove (101) and the base (10).
6. according to the described test unit that is used to detect the valve matching parts sealing of claim 5, it is characterized in that, also comprise first lining (13), this first lining (13) is an annular, and its lateral surface and groove (101) inwall is fitted.
7. according to the described test unit that is used to detect the valve matching parts sealing of claim 6, it is characterized in that, also comprise second lining (14), this second lining (14) has two, be fixedly connected on respectively in the pilot hole inwall at sliding panel (6) two ends, and, the removable contact between second lining (14) inwall and column (2) outer wall.
8. according to the described test unit that is used to detect the valve matching parts sealing of claim 7, it is characterized in that the height of described second lining (14) is greater than the height of sliding panel (6).
CN2010102049692A 2010-06-21 2010-06-21 Testing device for detecting sealing property of delivery valve matching parts CN101858818B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010102049692A CN101858818B (en) 2010-06-21 2010-06-21 Testing device for detecting sealing property of delivery valve matching parts

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2010102049692A CN101858818B (en) 2010-06-21 2010-06-21 Testing device for detecting sealing property of delivery valve matching parts
PCT/CN2010/075173 WO2011160317A1 (en) 2010-06-21 2010-07-15 Testing device for detecting leakage of oil outlet valve coupled parts

Publications (2)

Publication Number Publication Date
CN101858818A CN101858818A (en) 2010-10-13
CN101858818B true CN101858818B (en) 2011-09-28

Family

ID=42944849

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010102049692A CN101858818B (en) 2010-06-21 2010-06-21 Testing device for detecting sealing property of delivery valve matching parts

Country Status (2)

Country Link
CN (1) CN101858818B (en)
WO (1) WO2011160317A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9599530B2 (en) 2012-02-22 2017-03-21 Iop Marine A/S Method of testing a gas shut-down valve and a system for exercising the method
CN108956108A (en) * 2018-05-21 2018-12-07 芜湖优能自动化设备有限公司 A kind of pressure valve pressure regulation detection machine

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102023072B (en) * 2010-10-15 2012-10-24 奇瑞汽车股份有限公司 Detection device and method for sealing performance between anti-explosion valve outer wire and cover plate of lithium ion battery
CN102303235B (en) * 2011-06-14 2013-03-20 南通星维油泵油嘴有限公司 Press fit testing device for buffer valve
CN102706522A (en) * 2012-06-27 2012-10-03 无锡隆盛科技股份有限公司 Detection device for detecting gas tightness of oxygen sensor
CN103994866B (en) * 2014-02-11 2016-07-06 杭州沃镭科技有限公司 Automatic drain valve device for detecting sealability and detection method
CN105403367A (en) * 2015-12-03 2016-03-16 天津一诺塑料制品有限公司 Testing apparatus for airtightness of bottle cap
CN105784282A (en) * 2015-12-07 2016-07-20 西安航空动力控制科技有限公司 Fuel accessory component oil leakage volume testing apparatus
CN106353049A (en) * 2016-07-21 2017-01-25 齐齐哈尔四达铁路设备有限责任公司 Railway truck braking sliding valve airtightness tester
CN106124128B (en) * 2016-08-20 2019-03-05 无锡鹰贝精密轴承有限公司 Valve core gas tightness detecting device
CN106248317B (en) * 2016-08-20 2019-03-05 无锡鹰贝精密轴承有限公司 Spool air-tightness detection method
CN109668690A (en) * 2019-01-23 2019-04-23 北京日端电子有限公司 A kind of harness connector plug device for detecting sealability

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2065246U (en) * 1988-02-03 1990-11-07 周德荪 Portable detector for injector of injection pump
DE4000044A1 (en) * 1990-01-03 1991-07-04 Bosch Gmbh Robert Electrically controlled fuel injection pump for internal combustion engines, in particular pumpeduese
DE4110226A1 (en) * 1991-03-28 1992-05-27 Bosch Gmbh Robert Test appts. for injection pressure measurement of pump nozzle - measures pressure via length variations caused by reaction forces during operation of IC engine
DE19653055C1 (en) * 1996-12-19 1998-05-07 Bosch Gmbh Robert Fuel injection pump seal checking process for vehicles
CN2713453Y (en) * 2004-07-29 2005-07-27 重庆宗申技术开发研究有限公司 Sealability detector for oil-sealed sealing member
WO2007000189A1 (en) * 2005-06-29 2007-01-04 Agilent Technologies, Inc. Leakage detection based on fluid property changes
CN100483095C (en) * 2007-04-27 2009-04-29 郭琅琅 Braking main cylinder vacuum sealing test bench
CN101441126B (en) * 2007-11-21 2011-09-07 上海恒谊制药设备有限公司 Bottles gas-leaking fast detecting machine
CN201749012U (en) * 2010-06-21 2011-02-16 南通星维油泵油嘴有限公司 Testing device for detecting sealing performance of oil outlet valve coupler

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9599530B2 (en) 2012-02-22 2017-03-21 Iop Marine A/S Method of testing a gas shut-down valve and a system for exercising the method
CN108956108A (en) * 2018-05-21 2018-12-07 芜湖优能自动化设备有限公司 A kind of pressure valve pressure regulation detection machine

Also Published As

Publication number Publication date
CN101858818A (en) 2010-10-13
WO2011160317A1 (en) 2011-12-29

Similar Documents

Publication Publication Date Title
CN204461965U (en) Adding pressure type rock permeability instrument
CN102979505A (en) Well cementation cement sheath performance simulation experiment device and experiment method
CN105486840A (en) Solidification and permeation combined experimental device
CN102865271A (en) Detection method and device of internal leakage of hydraulic valve
CN203858078U (en) Air tightness detection device for airbag base of passenger car
CN203785846U (en) Valve sealing performance detection apparatus
CN206410979U (en) A kind of core holding unit for being used to simulate hydraulic fracturing and permeability test
DK177454B1 (en) A method for testing a gas injection valve and a plant for carrying out the method
CN102562011B (en) Experiment system for high-pressure outcrop plane model
CN101458198A (en) High-pressure high flow fatigue test system for bearing equipment
CA2562025A1 (en) Valve with a pressurized hydraulic transmission device and a method of operating same
CN102175406A (en) Test system and test method for water tightness test of tunnel deformation joint waterstop
CN102841046B (en) Method for measuring rock porosity and measuring device
CN203249742U (en) Water leakage detection device for washing kettle
CN201740717U (en) Desorbing character test tank for water injection coal sample under pressure condition
CN202441672U (en) Inner leakage detection tool for hydraulic oil cylinder
CN102507307A (en) Sealing device for pressure chamber of true triaxial apparatus
CN202002785U (en) Leak detection device for pipe fitting
CN104126109B (en) The method for testing gas shutoff valve
CN100432646C (en) Process and device for inner pressure type conduits interface pressure testing
CN201955205U (en) Device for detecting sealing performance of automobile parts
CN105716796A (en) Packaging bag air leakage detection device
CN103196633A (en) Air impermeability detection device
KR101224959B1 (en) Pipe type leak tast machine
CN203811338U (en) Tubing gas permeability testing device

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model