WO2011160317A1 - 一种用于检测出油阀偶件密封性的试验装置 - Google Patents

一种用于检测出油阀偶件密封性的试验装置 Download PDF

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WO2011160317A1
WO2011160317A1 PCT/CN2010/075173 CN2010075173W WO2011160317A1 WO 2011160317 A1 WO2011160317 A1 WO 2011160317A1 CN 2010075173 W CN2010075173 W CN 2010075173W WO 2011160317 A1 WO2011160317 A1 WO 2011160317A1
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Prior art keywords
hole
gas
detecting
plate
sliding plate
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PCT/CN2010/075173
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English (en)
French (fr)
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罗舒伟
黄益人
陆晓东
张志平
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南通星维油泵油嘴有限公司
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Publication of WO2011160317A1 publication Critical patent/WO2011160317A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating 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
    • G01M3/28—Investigating 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
    • G01M3/2876—Investigating 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M65/00—Testing fuel-injection apparatus, e.g. testing injection timing ; Cleaning of fuel-injection apparatus
    • F02M65/006—Measuring or detecting fuel leakage of fuel injection apparatus

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  • the invention relates to a test device for detecting the sealing performance of a mechanical component, and in particular to a test device for detecting the sealing property of an oil valve coupler.
  • the oil delivery valve coupler is an important component in the diesel fuel injection system. Its function is to transfer the high pressure diesel oil supplied by the plunger coupler to the injector assembly. When the plunger coupler is shut down, the high pressure oil pipe and the column are connected. The upper end of the plug is insulated to prevent the oil in the high pressure oil pipe from flowing back into the plunger coupler.
  • the taper seal is required to detect the taper seal. The significance of this is to ensure that there is a certain pressure of fuel in the high-pressure tubing to prevent the fuel from flowing into the plunger couple through the tapered surface of the coupler, thus ensuring the normal operation of the diesel engine. Therefore, it is necessary to test the sealing performance of the oil delivery valve coupler.
  • the technical problem to be solved by the present invention is to provide a test device for detecting the sealing performance of an oil valve coupler, so as to accurately detect the sealing performance of the oil valve coupler and ensure its normal use in mechanical parts.
  • a test device for detecting the sealing property of an oil valve coupler comprising: a bottom plate, two columns, an upper cover plate, a cylinder, a connecting plate, a sliding plate, a pressure head, a gas collecting pipe, a gas leakage detecting device, a base, a vent pipe and a venting device; the bottom ends of the two columns are fixedly connected to the bottom plate, and a first through hole is disposed between the upper surface and the lower surface of the bottom plate; the top ends of the two columns are fixedly connected with the upper cover
  • the upper cover is fixedly connected with a cylinder, and the piston rod on the cylinder passes through the through hole in the upper cover and extends downward; the lower end of the piston rod is fixedly connected with the upper end of the connecting plate; the lower end of the connecting plate and the sliding
  • the upper surface of the plate is fixedly connected; a positioning hole is respectively disposed at two ends of the sliding plate, and the positioning hole is respectively matched with the column, and the sliding plate can be moved up and down along the
  • the gas leakage detecting device comprises a container for holding water, a burette and a stopwatch; the burette is located in the container, one end of which protrudes from the water surface and is connected to the gas collecting pipe; and the other end of which is located below the water surface.
  • gas leak detection devices include water-filled containers, burettes, and stopwatches.
  • the burette is located in the container, one end of which protrudes from the water surface and is connected to the gas collecting pipe; the other end of which is located below the water surface.
  • Figure 1 is a cross-sectional view of the present invention.
  • Figure 2 is a cross-sectional view of the oil delivery valve coupler to which the present invention is applied.
  • Figure 3 is a schematic view showing the assembly of a gas leak detecting device in the present invention.
  • Fig. 4 is a schematic view showing the assembly of another gas leakage detecting device in the present invention.
  • bottom plate 100, first through hole, 2, column, 3, upper cover, 4, cylinder, 401, piston rod, 5, connecting plate, 6, sliding plate, 7, indenter, 701, Second through hole, 702, upper washer, 703, air collection chamber, 704, second sealing ring, 705, spacer, 8, gas collecting tube, 9, gas leakage detecting device, 10, base, 101, groove, 102 Lower gasket, 103, third through hole, 11, vent pipe, 12, ventilation device, 13, first bushing, 14, second bushing, 15, oil outlet valve body, 1501, first top surface, 1502 Second top surface, 16, oil outlet seat, 17, container, 18, burette.
  • a test device for detecting the sealing property of an oil valve coupler includes a bottom plate 1, two columns 2, an upper cover 3, a cylinder 4, a connecting plate 5, and a sliding plate 6.
  • the bottom ends of the two columns 2 are fixedly connected to the bottom plate 1.
  • the connection between the two can be done by a common mechanical connection, such as a bolted connection.
  • a first through hole 100 is disposed between the upper surface and the lower surface of the bottom plate 1.
  • the top ends of the two columns 2 are fixedly connected to the upper cover 3.
  • the upper cover 3 has a through hole which is longitudinally arranged to communicate the upper surface and the lower surface of the upper cover 3.
  • a cylinder 4 is fixedly coupled to the top surface of the upper cover 3.
  • the piston rod 401 on the cylinder 4 extends through the through hole in the upper cover 3 and extends downward.
  • the lower end of the piston rod 401 is fixedly coupled to the upper end of the connecting plate 5.
  • the lower end of the connecting plate 5 is fixedly coupled to the upper surface of the sliding plate 6.
  • a positioning hole is respectively disposed at both ends of the sliding plate 6. The positioning holes are respectively engaged with the two columns 2, and the sliding plate 6 can be moved up and down along the column 2.
  • the lower surface of the slide plate 6 is fixedly coupled to the upper surface of the ram 7.
  • a second through hole 701 that communicates the upper surface and the lower surface of the ram 7 is provided in the ram 7.
  • the upper end of the second through hole 701 is provided with an upper gasket 702.
  • a first seal ring 706 is disposed between the upper surface of the ram 7 and the lower surface of the slide plate 6, and the first seal ring 706 is located at the periphery of the second through hole 701.
  • the side end of the indenter 7 is provided with a collecting chamber 703.
  • the gas collection chamber 703 is connected to the gas collection tube 8 and the second through hole 701.
  • the gas collecting pipe 8 is connected to the gas leak detecting device 9.
  • the lower surface of the indenter 7 is provided with a second seal ring 704.
  • the second seal ring 704 is located at the periphery of the second through hole 701.
  • the upper surface of the bottom plate 1 is fixedly coupled to the lower surface of the base 10.
  • the upper portion of the base 10 is provided with a recess 101, and the lower portion of the recess 101 is provided with a lower washer 102.
  • a third through hole 103 is disposed between the lower surface of the groove 101 and the lower surface of the base 10. The third through hole 103 communicates with the first through hole 100 on the bottom plate 1.
  • One end of the vent pipe 11 passes through the first through hole 100 and is connected to the third through hole 103, and the other end of the vent pipe 11 is connected to the ventilating device 12.
  • FIG. 2 is a cross-sectional view of the workpiece being tested in this patent.
  • the oil delivery valve coupler includes an oil discharge valve body 15 and an oil discharge valve seat 16, and the oil discharge valve body 15 includes a first top surface 1501 and a second top surface 1502.
  • the oil discharge valve body 15 and the oil discharge valve seat 16 are connected in a tapered manner.
  • the seal inspection of this patent detects the tightness of the tapered joint.
  • the method of using this patent is: Step 1: Install the oil valve coupler and allow the cylinder 4 to clamp out the oil valve coupler.
  • the oil delivery valve coupler is located between the groove 101 in the base 10 and the second through hole 701 in the ram 1.
  • the piston rod 401 on the cylinder 4 moves downward, so that the second top surface 1502 of the oil discharge valve body 15 is in contact with the upper washer 702, and the pressure between the two is prevented from leaking out; the oil outlet seat 16 is provided.
  • the top surface is in contact with the second sealing ring 704, and the pressing force between the two contacts prevents the gas from leaking out; the bottom surface of the oil discharge valve seat 16 is in contact with the lower gasket 102.
  • the second step the ventilation device 12 is turned on, and the detection device is ventilated for a certain period of time.
  • the third step observing the gas leak detecting device 9 whether or not there is gas leakage.
  • the fourth step stop the ventilation, the cylinder 4 moves upwards, and the oil valve coupler is taken out.
  • the working principle of this patent is that the detection gas does not leak from the periphery of the indenter 7 due to the pressing action of the first seal 704 and the second seal ring 706. If the seal between the oil discharge valve body 15 and the oil discharge valve seat 16 is good, there is no leakage gas between the two, and the gas does not enter the gas collection pipe 8. If the sealing property between the oil discharge valve body 15 and the oil discharge valve seat 16 is poor, the leakage gas between the two enters the second through hole 701 of the pressure head 7, and sequentially flows into the gas collection chamber 703 and the gas collection tube 8 in order. And the gas leak detecting device 9.
  • the gas leakage detecting device 9 described in the present patent includes a container 17 containing water, and one end of the gas collecting pipe 8 is inserted under the water surface of the container 17.
  • the detection gas flows from the gas collection chamber 703 into the gas collection tube 8
  • the detection gas of the gas collection tube 8 emits blisters in the container 17.
  • the water surface in the container 17 is calm.
  • the gas leak detecting device 9 includes a container 17 for holding water, a burette 18, and a stopwatch.
  • the burette 18 is located in the container 17, one end of which extends out of the water surface, and the end is connected to the gas collecting pipe 8. The other end of the burette 18 is located below the surface of the water.
  • the stopwatch is simultaneously turned on, and the height of the water surface in the burette 18 is calculated for a certain period of time, for example, 10 seconds, thereby calculating whether the gas leakage speed meets the technical requirements of the delivery valve coupler.
  • the second through hole 701 in the indenter 7 includes, in addition to the upper washer 702, a spacer 705 between the top end of the upper washer 702 and the top end of the second through hole 701.
  • the spacer 705 By providing the spacer 705, the workpiece delivery valve body 15 can be pressed together with the upper washer 702, and the magnitude of the pressing force is determined by the thickness of the spacer 705.
  • the lower gasket 102 is a tendon gasket, and the lower gasket 102 has a cavity that communicates with the groove 101 and the third through hole 103 on the base 10. The provision of the cavity facilitates rapid detection of gas from the venting device 12 into the delivery valve seat 16.
  • a first bushing 13 is disposed on the inner wall of the groove 101 of the base 10, and the first bushing 13 is annular.
  • the outer side surface is in contact with the inner wall of the groove 101.
  • the lower end of the inner side surface of the first bushing 13 is in contact with the outer edge of the lower washer 102.
  • a second bushing 14 is respectively disposed in the inner wall of the positioning hole at both ends of the sliding plate 6.
  • the second bushings 14 are respectively fixedly connected to the inner walls of the positioning holes at both ends of the sliding plate 6, and the inner wall of the second bushing 14 is in movable contact with the outer wall of the column 2. Since the ram 7 and the connecting plate 5 are arranged on the sliding plate 6, they are heavy. In order to ensure a reasonable friction between the sliding plate 6 and the column 2, the height of the second bushing 14 is greater than the height of the sliding plate 6. This ensures the stability of the guide.

Description

一种用于检测出油阀偶件密封性的试验装置 技术领域
本发明涉及一种用于检测机械零部件密封性能的试验装置，具体来说，涉及一种用于检测出油阀偶件密封性的试验装置。
背景技术
出油阀偶件是柴油机燃油喷射系统中的重要部件，它的作用是将由柱塞偶件提供的高压柴油输向喷油器总成，在柱塞偶件停供时，将高压油管与柱塞上端空腔隔绝，防止高压油管内的油倒流入柱塞偶件内。出油阀偶件需进行锥面密封性检测，其意义是保证高压油管中留有一定压力的燃油，防止燃油通过偶件的锥面流入柱塞偶件，从而保证柴油机能正常运转。因此，对出油阀偶件的密封性能进行检测是十分必要的。
技术问题
本发明所要解决的技术问题是提供一种用于检测出油阀偶件密封性的试验装置，以准确检测出出油阀偶件的密封性能，保证其在机械部件中的正常使用。
技术解决方案
一种用于检测出油阀偶件密封性的试验装置，其特征在于，包括底板、两个立柱、上盖板、气缸、连接板、滑动板、压头、集气管、气体泄露检测装置、底座、通气管和通气设备；所述两个立柱的底端与底板固定连接，该底板的上表面和下表面之间设置有第一通孔；该两个立柱的顶端与上盖板固定连接；该上盖板固定连接有一气缸，该气缸上的活塞杆穿过上盖板上的通孔，向下延伸；该活塞杆的下端与连接板的上端固定连接；该连接板的下端与滑动板的上表面固定连接；该滑动板的两端分别设置一个定位孔，该定位孔分别与立柱相配合，可以使滑动板沿着立柱上下移动；该滑动板的下表面与压头的上表面固定连接；该压头中设置有连通压头的上表面和下表面的第二通孔，在第二通孔的上端设置有上垫圈，在该压头的上表面和滑动板的下表面之间设置有第一密封圈，并且该第一密封圈位于第二通孔的周边；该压头的侧端设置有集气腔，该集气腔连通集气管和第二通孔；该集气管与气体泄露检测装置连接；该压头的下表面设置有第二密封圈，该第二密封圈位于第二通孔的周边；该底板的上表面与底座的下表面固定连接；该底座的上部设置有凹槽，该凹槽下部设置有下垫圈，该凹槽的下表面至底座的下表面之间设置有第三通孔，该第三通孔与底板上的第一通孔连通，该通气管的一端穿过第一通孔，与第三通孔连接，该通气管的另一端与通气设备连接。
所述的气体泄露检测装置，包括盛水的容器、滴定管和秒表；该滴定管位于容器中，其一端伸出水面，并且和集气管连接；其另一端位于水面下。
采用本发明的技术方案，通过底板、两个立柱、上盖板、气缸、连接板、滑动板、压头、集气管、气体泄露检测装置、底座、通气管和通气设备的连接，可以检测出出油阀体和出油阀座之间的密封性。尤其是气体泄露检测装置，包括盛水的容器、滴定管和秒表。该滴定管位于容器中，其一端伸出水面，并且和集气管连接；其另一端位于水面下。利用秒表计时，查看一定时间内，滴定管中液面的下降幅度，可以准确计算出出油阀偶件的气体泄漏速度，进而可以准确判断该出油阀偶件是否符合技术要求。
 附图说明
图1是本发明的剖视图。
图2是本发明中应用到的出油阀偶件的剖视图。
图3是本发明中一种气体泄露检测装置的装配示意图。
图4是本发明中另一种气体泄露检测装置的装配示意图。
图中，1、底板，100、第一通孔，2、立柱，3、上盖板，4、气缸，401、活塞杆，5、连接板，6、滑动板，7、压头，701、第二通孔，702、上垫圈，703、集气腔，704、第二密封圈，705、垫块，8、集气管，9、气体泄露检测装置，10、底座，101、凹槽，102、下垫圈，103、第三通孔，11、通气管，12、通气设备，13、第一衬套，14、第二衬套，15、出油阀体，1501、第一顶面，1502第二顶面，16、出油阀座，17、容器，18、滴定管。
 本发明的实施方式
如图1所示，本发明的一种用于检测出油阀偶件密封性的试验装置，包括底板1、两个立柱2、上盖板3、气缸4、连接板5、滑动板6、压头7、集气管8、气体泄露检测装置9、底座10、通气管11和通气设备12。两个立柱2的底端与底板1固定连接。两者之间的连接可以采用常用的机械连接方式，例如螺栓连接。底板1的上表面和下表面之间设置有第一通孔100。两个立柱2的顶端与上盖板3固定连接。上盖板3中有一个通孔，该通孔纵向布置，连通上盖板3的上表面和下表面。上盖板3的顶面固定连接有一气缸4，该气缸4上的活塞杆401穿过上盖板3上的通孔，向下延伸。活塞杆401的下端与连接板5的上端固定连接。连接板5的下端与滑动板6的上表面固定连接。滑动板6的两端分别设置一个定位孔。该定位孔分别与两个立柱2相配合，可以使滑动板6沿着立柱2上下移动。滑动板6的下表面与压头7的上表面固定连接。压头7中设置有连通压头7的上表面和下表面的第二通孔701。第二通孔701的上端设置有上垫圈702。压头7的上表面和滑动板6的下表面之间设置有第一密封圈706，并且第一密封圈706位于第二通孔701的周边。压头7的侧端设置有集气腔703。集气腔703连通集气管8和第二通孔701。集气管8与气体泄露检测装置9连接。压头7的下表面设置有第二密封圈704。第二密封圈704位于第二通孔701的周边。底板1的上表面与底座10的下表面固定连接。底座10的上部设置有凹槽101，该凹槽101下部设置有下垫圈102。凹槽101的下表面至底座10的下表面之间设置有第三通孔103。第三通孔103与底板1上的第一通孔100连通。该通气管11的一端穿过第一通孔100，与第三通孔103连接，该通气管11的另一端与通气设备12连接。
图2是本专利中被检测的工件的剖面图。出油阀偶件包括出油阀体15和出油阀座16，出油阀体15包括第一顶面1501和第二顶面1502。出油阀体15和出油阀座16之间呈锥面连接。本专利的密封检测就是检测该锥面连接的密封性。使用本专利的方法是：第一步：安装出油阀偶件，并让气缸4夹紧出油阀偶件。出油阀偶件位于底座10中的凹槽101和压头1中的第二通孔701之间。气缸4上的活塞杆401向下移动，使出油阀体15的第二顶面1502与上垫圈702接触，以两者之间的压紧力，防止气体外泄；使出油阀座16的顶面与第二密封圈704接触，以两者之间的压紧力，防止气体外泄；使出油阀座16的底面与下垫圈102接触。第二步：开通通气设备12，对检测装置通气一定时间。第三步：观察气体泄露检测装置9，是否有气体外泄。第四步：停止通气，气缸4向上运动，取出出油阀偶件。
本专利的工作原理是：由于第一密封704和第二密封圈706的压紧作用，检测气体不会从压头7周边泄露。如果出油阀体15和出油阀座16之间的密封性良好，则两者之间不会有泄露气体，气体也就不会进入集气管8中。如果出油阀体15和出油阀座16之间的密封性差，则两者之间的泄露气体会进入压头7的第二通孔701中，进而依次流入集气腔703、集气管8和气体泄露检测装置9中。
本专利中所述的气体泄露检测装置9，如图3所示，包括盛有水的容器17，集气管8的一端插入该容器17的水面下。当有检测气体从集气腔703流进集气管8中时，集气管8的检测气体在容器17中会冒出水泡。当没有检测气体从集气腔703流进集气管8中时，容器17中的水面是平静的。
为精确计算出气体的泄露量，如图4所示，气体泄露检测装置9，包括盛水的容器17、滴定管18和秒表。该滴定管18位于容器17中，其一端伸出水面，并且该端和集气管8连接。滴定管18的另一端位于水面下。当开启通气设备12时，同时开启秒表，计算一定时间，例如10秒钟，滴定管18中水面下降的高度，进而计算出气体的泄漏速度是否符合出油阀偶件的技术要求。
作为一种改进，压头7中的第二通孔701除了包括上垫圈702，还包括垫块705，该垫块705位于上垫圈702顶端和第二通孔701顶端之间。通过设置垫块705，可以与上垫圈702共同压紧工件出油阀体15，压紧力的大小由垫块705的厚度来确定。
作为另一种改进，下垫圈102为牛筋垫圈，并且该下垫圈102带有空腔，该空腔连通凹槽101和底座10上的第三通孔103。该空腔的设置，有利于检测气体迅速从通气设备12进入出油阀座16中。
为便于出油阀座16在底座10稳固，同时避免出油阀座16与底座10接触时损伤，在底座10的凹槽101内壁布置第一衬套13，该第一衬套13为环形，其外侧面与凹槽101内壁相贴合。第一衬套13内侧面的下端与下垫圈102外缘相贴合。
为避免滑动板6与立柱2相配合的定位孔壁面在移动过程中损伤，在滑动板6两端的定位孔内壁中分别布置一个第二衬套14。该第二衬套14分别固定连接在滑动板6两端的定位孔内壁中，并且，第二衬套14内壁与立柱2外壁之间可移动接触。由于滑动板6上布置有压头7和连接板5，它们的重量较大。为保证滑动板6与立柱2之间有合理的摩擦力，第二衬套14的高度大于滑动板6的高度。这样可以保证导向的稳定性。

Claims (8)

  1. 一种用于检测出油阀偶件密封性的试验装置，其特征在于，包括底板（1）、两个立柱（2）、上盖板（3）、气缸（4）、连接板（5）、滑动板（6）、压头（7）、集气管（8）、气体泄露检测装置（9）、底座（10）、通气管（11）和通气设备（12）；
    所述两个立柱（2）的底端与底板（1）固定连接，该底板（1）的上表面和下表面之间设置有第一通孔（100）；该两个立柱（2）的顶端与上盖板（3）固定连接；该上盖板（3）固定连接有一气缸（4），该气缸（4）上的活塞杆（401）穿过上盖板（3）上的通孔，向下延伸；该活塞杆（401）的下端与连接板（5）的上端固定连接；该连接板（5）的下端与滑动板（6）的上表面固定连接；该滑动板（6）的两端分别设置一个定位孔，该定位孔分别与立柱（2）相配合，可以使滑动板（6）沿着立柱（2）上下移动；该滑动板（6）的下表面与压头（7）的上表面固定连接；该压头（7）中设置有连通压头（7）的上表面和下表面的第二通孔（701），在第二通孔（701）的上端设置有上垫圈（702），在该压头（7）的上表面和滑动板（6）的下表面之间设置有第一密封圈（706），并且该第一密封圈（706）位于第二通孔（701）的周边；该压头（7）的侧端设置有集气腔（703），该集气腔（703）连通集气管（8）和第二通孔（701）；该集气管（8）与气体泄露检测装置（9）连接；该压头（7）的下表面设置有第二密封圈（704），该第二密封圈（704）位于第二通孔（701）的周边；该底板（1）的上表面与底座（10）的下表面固定连接；该底座（10）的上部设置有凹槽（101），该凹槽（101）下部设置有下垫圈（102），该凹槽（101）的下表面至底座（10）的下表面之间设置有第三通孔（103），该第三通孔（103）与底板（1）上的第一通孔（100）连通，该通气管（11）的一端穿过第一通孔（100），与第三通孔（103）连接，该通气管（11）的另一端与通气设备（12）连接。
  2. 按照权利要求1所述的用于检测出油阀偶件密封性的试验装置，其特征在于，所述的气体泄露检测装置（9），包括盛有水的容器（17），集气管（8）的一端插入该容器中的水面下。
  3. 按照权利要求1所述的用于检测出油阀偶件密封性的试验装置，其特征在于，所述的气体泄露检测装置（9），包括盛水的容器（17）、滴定管（18）和秒表；该滴定管（18）位于容器（17）中，其一端伸出水面，并且和集气管（8）连接；其另一端位于水面下。
  4. 按照权利要求1至3中任何一项所述的用于检测出油阀偶件密封性的试验装置，其特征在于，还包括垫块（705），该垫块（705）位于上垫圈（702）顶端和第二通孔（701）顶端之间。
  5. 按照权利要求4所述的用于检测出油阀偶件密封性的试验装置，其特征在于，所述的下垫圈（102）为牛筋垫圈，并且该下垫圈（102）带有空腔，该空腔连通凹槽（101）和底座（10）上的第三通孔（103）。
  6. 按照权利要求5所述的用于检测出油阀偶件密封性的试验装置，其特征在于，还包括第一衬套（13），该第一衬套（13）为环形，其外侧面与凹槽（101）内壁贴合。
  7. 按照权利要求6所述的用于检测出油阀偶件密封性的试验装置，其特征在于，还包括第二衬套（14），该第二衬套（14）有两个，分别固定连接在滑动板（6）两端的定位孔内壁中，并且，第二衬套（14）内壁与立柱（2）外壁之间可移动接触。
  8. 按照权利要求7所述的用于检测出油阀偶件密封性的试验装置，其特征在于，所述的第二衬套（14）的高度大于滑动板（6）的高度。
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