CN105910769A - Automated leakage detection device - Google Patents

Automated leakage detection device Download PDF

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Publication number
CN105910769A
CN105910769A CN201610333703.5A CN201610333703A CN105910769A CN 105910769 A CN105910769 A CN 105910769A CN 201610333703 A CN201610333703 A CN 201610333703A CN 105910769 A CN105910769 A CN 105910769A
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CN
China
Prior art keywords
plate
location
seal
valve
open slot
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CN201610333703.5A
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Chinese (zh)
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CN105910769B (en
Inventor
宣月罗
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宣月罗
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Priority to CN201610333703.5A priority Critical patent/CN105910769B/en
Publication of CN105910769A publication Critical patent/CN105910769A/en
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Publication of CN105910769B publication Critical patent/CN105910769B/en

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    • 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
    • G01M3/04Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/06Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
    • G01M3/08Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds
    • G01M3/086Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds for valves

Abstract

The invention discloses an automated leakage detection device, which relates to the valve sealing performance testing field. The automated leakage detection device comprises a base and a water tank arranged on the base, wherein two polished rods are arranged in the water tank, the two polished rods are vertically arranged, upper ends of the polished rods extend out of the water tank, a fixed plate connected with the two polished rods is arranged above the water tank, an upper sealing mechanism, a lower sealing mechanism and a positioning bracket are arranged between the fixed plate and the bottom part of the water tank, the upper sealing mechanism is used for sealing an upper end of a valve, the lower sealing mechanism is used for sealing a lower end of the valve, the positioning bracket is used for positioning the valve, and a cylinder used for driving the upper sealing mechanism is arranged on the fixed plate. For solving the problems that an existing valve sealing performance testing method is inconvenient in installation and clamping, low in efficiency, labor-consuming and not high in automation degree, the automated leakage detection device having the advantages of high testing efficiency, convenient installation and clamping as well as high automation degree is disclosed by the invention.

Description

A kind of automation leakage detection apparatus

Technical field

The present invention relates to sealing performance testing machine field, particularly relate to the automation leakage detection apparatus of a kind of valve.

Background technology

Opening and closing element conventional when valve is gas or liquid communication, is generally used for gas ductwork and water conservancy two important industries of transport, therefore, is required for carrying out sealing propertytest and torsion-testing, not so has bigger potential safety hazard before dispatching from the factory.

Prior art is the highest to the test method automaticity of valve, when carrying out sealing property test, sealing gasket is generally used to be placed in the outside at valve two ends, the force application apparatus such as jack or hydraulic cylinder is used to be clamped in valve two ends, so that two ends of sealing gasket and valve are formed and seal, then the valve after whole sealing is manually placed in water, then is passed through compressed gas toward valve internal, whether have bubble produce, judge its sealing property if observing in water.Testing by means of which, cost of labor is higher, inefficient, and corporate image is bad.

Summary of the invention

The present invention is to solve that current valve seal performance test methods clamping is inconvenient, efficiency is low, expense manpower, problem that automaticity is the highest, a kind of testing efficiency height, convenient mounting and clamping, valve leakage detection apparatus that automaticity is high are proposed.

To achieve these goals, the present invention is by the following technical solutions: a kind of automation leakage detection apparatus, including base and the water tank that is arranged on base, two polished rods it are provided with in described water tank, two polished rods are vertically arranged and polished rod upper end is stretched out outside water tank, water tank is arranged over the fixed plate being all connected with two polished rods, the upper sealing mechanism for sealed valve upper end it is provided with between described fixed plate and water tank bottom, lower seal mechanism for sealed valve lower end and the locating support for valve location, fixed plate is provided with one for the cylinder driving upper sealing mechanism;

The upper end cover that described upper sealing mechanism includes location-plate, is arranged on location-plate, described upper location-plate and two polished rods are all slidably matched, and the slidably direction of upper location-plate is vertical, and described upper end cover is provided with test pore;

The lower seal end cap that described lower seal mechanism includes lower location-plate, is arranged on lower location-plate, described lower location-plate and two polished rods are all slidably matched, and the slidably direction of lower location-plate is vertical, and described lower seal end cap is provided with lower test pore;

Described locating support is fixed on lower location-plate;

The lower location-plate returning spring being between lower location-plate and water tank bottom it is arranged with on described polished rod.

As preferably, described upper sealing mechanism also includes upper end cover briquetting, connecting plate, bolt played by some plugs, connecting plate is in above upper end cover briquetting and connecting plate is connected with the piston rod of cylinder, plug is played location-plate and plug on bolt-through and is beaten and be bolted on connecting plate, plug is beaten and is slidably connected between bolt and upper location-plate, plug is beaten and is arranged with the end cap returning spring being between connecting plate and upper location-plate on bolt, upper end cover lower end is provided with the upper piece open slot inserted for valve end, upper piece open slot is cylindrical, upper end cover is provided with the upper test pore connected with upper piece open slot, upper piece open slot madial wall is provided with ring-type upper groove, upper groove is coaxial with upper piece open slot, the upper sealing ring coaxial with upper groove it is provided with in upper groove;Annular groove and some upperpush rod passages it is additionally provided with on upper end cover, upperpush rod passage lower end connects with upper annular groove, upper annular groove lower end connects with upper groove, upper annular groove is between upper groove and upperpush rod passage, the upper press ring for pushing upper sealing ring it is provided with in upper annular groove, upper end cover briquetting lower end is provided with some upperpush rods for pushing upper press ring, upperpush rod passage and upperpush rod one_to_one corresponding, and upperpush rod is vertically arranged and upperpush rod lower end is stretched in corresponding upperpush rod passage;

nullDescribed lower seal mechanism also includes bottom end cover briquetting,Bottom end cover briquetting is fixed with water tank bottom,Lower seal end cap upper end is provided with the lower piece of open slot inserted for valve end,Lower piece of open slot is cylindrical,Lower end end cover is provided with the lower test pore connected with lower piece of open slot,Lower piece of open slot madial wall is provided with ring-type low groove,Low groove is coaxial with lower piece of open slot,The lower seal coaxial with low groove it is provided with in low groove,Lower annular groove and some down-pressed pole passages it is additionally provided with on lower seal end cap,Down-pressed pole passage upper end connects with lower annular groove,Lower annular groove upper end connects with low groove,Lower annular groove is between low groove and down-pressed pole passage,The lower pressure ring for pushing lower seal it is provided with in lower annular groove,Bottom end cover briquetting upper end is provided with some down-pressed poles for pushing lower pressure ring,Down-pressed pole passage and down-pressed pole one_to_one corresponding,Down-pressed pole is vertically arranged and down-pressed pole is in the underface of corresponding down-pressed pole passage.

As preferably, bolt quantity beaten by described plug is two, and two plugs are played bolt and are arranged symmetrically with centered by cylinder piston rod axis.

As preferably, described locating support cylindrically and is coaxially disposed with lower seal end cap, and locating support internal via shape mates with valve body shape clamping, and locating support upper end-face edge offers the valve rod positioning port of valve rod location in the middle of positioning valve.

As preferably, described upper location-plate is provided with two upper polished rod slide blocks, upper polished rod slide block and polished rod one_to_one corresponding, and upper polished rod slide block set is located on corresponding polished rod and is slidably matched with corresponding polished rod;Also being provided with two lower polished rod slide blocks, lower polished rod slide block and polished rod one_to_one corresponding on described lower location-plate, lower polished rod slide block set is located on corresponding polished rod and is slidably matched with corresponding polished rod.

As preferably, described upper sealing ring and lower seal are hollow inflatable sealing ring.

As preferably, the truncation surface of described upper sealing ring and the truncation surface of lower seal are the most rectangular.

As preferably, the bottom land of described upper piece open slot is provided with the upper sealing gasket fixing with upper end cover, and the bottom land of lower piece of open slot is provided with the lower seal pad fixing with lower seal end cap.

As preferably, described upper sealing gasket and lower seal pad are silicagel pad.

Therefore, there is advantages that 1, automatically clamp, human-saving, efficiency is high;2, automatically entering water, action consistency is good, reveals and observes conveniently;3, simple in construction, processing cost is low, and corporate image is good.

Accompanying drawing explanation

Fig. 1 is the structural representation of the present invention.

Fig. 2 is the structural representation of another angle of the present invention.

Fig. 3 is the front view of the present invention.

Fig. 4 is the structural representation of sealing mechanism in the present invention.

Fig. 5 is the sectional view of end cover in the present invention.

Fig. 6 is the sectional view of lower seal end cap of the present invention.

Fig. 7 is the structural representation of test mode of the present invention.

1: base;2: water tank;3: lower seal mechanism;301: lower seal end cap;302: lower location-plate;303: bottom end cover briquetting;304: down-pressed pole;305: lower block open slot;306: low groove;307: lower seal;308: down-pressed pole passage;309: lower annular groove;310: lower pressure ring;311: under test pore;312: lower seal pad;4: upper sealing mechanism;401: upper end cover;402: upper location-plate;403: upper end cover briquetting;404: upperpush rod;405: bolt played by plug;406: end cap returning spring;407: upper block open slot;408: upper groove;409: upper sealing ring;410: upperpush rod passage;411: upper annular groove;412: upper press ring;413: above test pore;414: upper sealing gasket;5: polished rod;6: cylinder;7: fixed plate;8: connecting plate;9: lower location-plate returning spring;10: locating support;101: valve rod positioning port;11: valve;12: water level.

Detailed description of the invention

The present invention will be further described with specific embodiments below in conjunction with the accompanying drawings.

nullA kind of automation leakage detection apparatus,See Fig. 1、Fig. 2、Fig. 3,Including a base 1 and a water tank 2 being arranged on base 1,Two contour polished rods 5 it are provided with in described water tank 2,Two polished rods 5 are vertically arranged and polished rod 5 upper end is stretched out outside water tank 2,Water tank 2 is arranged over the fixed plate 7 being all connected with two polished rods 5,The upper sealing mechanism 4 for sealed valve 11 upper end it is provided with between bottom described fixed plate 7 and water tank 2、Lower seal mechanism 3 for sealed valve 11 lower end and the locating support 10 for valve 11 location,Fixed plate 7 is provided with one for the cylinder 6 driving upper sealing mechanism 4,The cylinder body of cylinder 6 is inverted and is fixed in fixed plate 7,The piston rod of cylinder 6 is connected through fixed plate 7 with upper sealing mechanism 4,Upper sealing mechanism 4 is driven by cylinder 6 and moves up and down.

As shown in Figure 4, described upper sealing mechanism 4 includes location-plate 402, the upper end cover 401 being arranged on location-plate 402, described upper location-plate 402 both sides are fixed with two upper polished rod slide blocks, two upper polished rod slide blocks and two polished rod 5 one_to_one corresponding, upper polished rod slide block set is located on corresponding polished rod 5 and is slidably matched with corresponding polished rod 5, i.e. going up location-plate 402 to be all slidably matched with two polished rods 5, the slidably direction of upper location-plate 402 is vertical.Described upper sealing mechanism 4 also includes upper end cover briquetting 403, bolt 405 played by connecting plate 8 and two plugs, connecting plate 8 is in above upper end cover briquetting 403 and connecting plate 8 center is connected with the piston rod of cylinder 6, upper end cover briquetting 403 is between connecting plate 8 and upper location-plate 402, two plugs are played bolt 405 and are run through location-plate 402 and fill in and play bolt 405 and be fixed on connecting plate 8, and two plugs play bolt 405 and are arranged symmetrically with centered by cylinder 6 piston rod axis, plug is beaten and is slidably connected between bolt 405 and upper location-plate 402, plug is beaten and is arranged with the end cap returning spring 406 being between connecting plate 8 and upper location-plate 402 on bolt 405.Described upper end cover 401 is fixed on center on the downside of location-plate 402; upper end cover 401 lower end is provided with the upper piece open slot 407 inserted for valve 11 upper end; as shown in Figure 5; upper piece open slot 407 is cylindrical and upper piece open slot 407 opening part is provided with chamfering; the bottom land of upper piece open slot 407 is provided with and the fixing upper sealing gasket 414 of upper end cover 401; described upper sealing gasket 414 is silicagel pad; upper sealing gasket 414 can protect the valve 11 not compact damage of end face, can be used for again sealed valve 11 end face;Upper end cover 401 is provided with test pore 413, and upper test pore 413 runs through piece open slot 407 bottom surface and upper end cover 401 upper surface of connection and upper piece open slot 407 is arranged;Upper piece open slot 407 madial wall is provided with ring-type upper groove 408, upper groove 408 is coaxial with upper piece open slot 407, being provided with the upper sealing ring 409 coaxial with upper groove 408 in upper groove 408, described upper sealing ring 409 is the hollow inflatable sealing ring that truncation surface is rectangular;A upper annular groove 411 and eight upperpush rod passages 410 it are additionally provided with on upper end cover 401, upperpush rod passage 410 lower end connects with upper annular groove 411, upper annular groove 411 lower end connects with upper groove 408, upper annular groove 411 is between upper groove 408 and upperpush rod passage 410, the upper press ring 412 for pushing upper sealing ring 409 it is provided with in upper annular groove 411, upper press ring 412 external diameter is less than upper sealing ring 409 external diameter, and upper press ring 412 internal diameter is more than upper sealing ring 409 internal diameter.Upper end cover briquetting 403 lower end is provided with eight for the upperpush rod 404 pushing upper press ring 412, upperpush rod passage 410 and upperpush rod 404 one_to_one corresponding, upperpush rod 404 is vertically arranged and upperpush rod 404 lower end is stretched in corresponding upperpush rod passage 410, upperpush rod 404 may pass through upperpush rod passage 410 and pushes upper press ring 412, thus extrudes upper sealing ring 409.

Described lower seal mechanism 3 includes lower location-plate 302, the lower seal end cap 301 being arranged on lower location-plate 302, described lower location-plate 302 both sides are fixed with two lower polished rod slide blocks, two lower polished rod slide blocks and two polished rod 5 one_to_one corresponding, lower polished rod slide block set is located on corresponding polished rod 5 and is slidably matched with corresponding polished rod 5, i.e. descending location-plate 302 to be all slidably matched with two polished rods 5, the slidably direction of lower location-plate 302 is vertical.Described lower seal mechanism 3 also includes bottom end cover briquetting 303, fixes bottom bottom end cover briquetting 303 and water tank 2.Described lower seal end cap 301 is fixed on lower location-plate 302 upper surface center, lower seal end cap 301 upper end is provided with the lower piece of open slot 305 inserted for valve 11 bottom, as shown in Figure 6, the most cylindrical and lower piece of open slot 305 opening part of lower piece of open slot 305 is provided with chamfering, the opening of upper and lower opening groove is oppositely arranged, the bottom land of lower piece of open slot 305 is provided with and the fixing lower seal pad 312 of lower seal end cap 301, and described lower seal pad 312 is silicagel pad;nullLower seal end cap 301 is provided with lower test pore 311,Lower test pore 311 runs through lower piece of open slot 305 bottom surface and connection end cover 301 lower surface, lower end and lower piece of open slot 305 is arranged,Lower piece of open slot 305 madial wall is provided with ring-type low groove 306,Low groove 306 is coaxial with lower piece of open slot 305,The lower seal 307 coaxial with low groove 306 it is provided with in low groove 306,Described lower seal 307 is the hollow inflatable sealing ring that truncation surface is rectangular,A lower annular groove 309 and eight down-pressed pole passages 308 it are additionally provided with on lower seal end cap 301,Down-pressed pole passage 308 upper end connects with lower annular groove 309,Lower annular groove 309 upper end connects with low groove 306,Lower annular groove 309 is between low groove 306 and down-pressed pole passage 308,The lower pressure ring 310 for pushing lower seal 307 it is provided with in lower annular groove 309,Lower pressure ring 310 external diameter is less than lower seal 307 external diameter,Lower pressure ring 310 internal diameter is more than lower seal 307 internal diameter.Bottom end cover briquetting 303 upper end is provided with eight for the down-pressed pole 304 pushing lower pressure ring 310, down-pressed pole passage 308 and down-pressed pole 304 one_to_one corresponding, down-pressed pole 304 is vertically arranged and down-pressed pole 304 is in the underface of corresponding down-pressed pole passage 308, instantly when end cover 301 is pushed and moves down, down-pressed pole 304 can push lower pressure ring 310 through corresponding down-pressed pole passage 308, thus extrudes lower seal 307.

Described locating support 10 is fixed on lower location-plate 302, locating support 10 cylindrically and is coaxially disposed with lower seal end cap 301, locating support 10 internal via shape mates with valve 11 body shape clamping, and locating support 10 upper end-face edge offers the valve rod positioning port 101 for positioning valve 11 middle valve rod location.

The lower location-plate returning spring 9 being all arranged with between being in bottom lower location-plate 302 and water tank 2 on two described polished rods 5.Owing to location-plate 302 lower in test process can be pressed down, the lower location-plate 302 that test can be completed by lower location-plate returning spring 9 returns to original height, thus circulation carries out the test of next valve 11.

Before test, first pouring a certain amount of water in water tank 2 into, water level 12 requirement can be higher than valve 11 middle valve rod height, as shown in Figure 7 in valve 11 test process.During test, valve 11 is vertically put in locating support 10, valve 11 sidewall positions with locating support 10 endoporus clamping, valve 11 lower end is inserted in lower seal mechanism 3 in lower piece of open slot 305 of lower seal end cap 301, the middle valve stem spacing of valve 11 is in valve rod positioning port 101, towards fixed-direction, it is simple to people observe leakage bubble in test process.Start cylinder 6, cylinder 6 piston rod drives whole upper sealing mechanism 4 to move down, in folding process, in upper piece open slot 407 of the upper end cover 401 that end, valve 11 upper end is introduced on location-plate 402, when about 11 two ends of valve respectively with the open slot of upper and lower two end covers bottom conflict time, owing to being designed with sealing gasket bottom the open slot of two end covers, valve 11 end realizes primary seal.Now, upper sealing mechanism 4 drives lower seal mechanism 3 to move down together, end cap returning spring 406 on upper sealing mechanism 4 starts to be compressed, connecting plate 8 is the most close with upper location-plate 402, and on the downside of connecting plate 8, the upperpush rod 404 on upper end cover briquetting 403 enters the upperpush rod passage 410 of upper end cover 401, the upper sealing ring 409 of the extruding of the upper press ring 412 in end cover 401 in propelling movement, upper sealing ring 409 is squeezed, inward expansion, embraces valve 11 upper end outer wall, it is achieved secondary seal;Simultaneously, lower location-plate returning spring 9 on the downside of lower seal mechanism 3 is also compressed, lower location-plate 302 moves down, until the down-pressed pole 304 on bottom end cover briquetting 303 extrudes lower seal 307 through the lower pressure ring 310 of down-pressed pole passage 308 propelling movement of the lower seal end cap 301 on lower location-plate 302 bottom water tank 2, lower seal 307 inward expansion, embrace valve 11 lower end outer wall, it is achieved secondary seal.Now, valve 11 stops moving down, and valve 11 two ends are all sealed by end cover, and the water level 12 in water tank 2, higher than the middle stem position of valve 11, can be tested.

Whether test mode can be divided into following two: 1, valve rod is opened, the most with air pressure capable of being increased in the test pore of upper and lower two end covers, observe and have bubble to spill at middle valve rod, just can determine whether whether leak at valve rod in the middle of when valve is opened;2, valve rod is closed, the lower test pore of lower seal end cap is connected with the water in water tank, up with air pressure capable of being increased in the upper test pore of end cover, observe at the lower test pore of lower seal end cap and whether have bubble to spill at middle valve rod, when just can determine whether valve closing, whether leak between upper and lower two cavitys and at middle valve rod.

Claims (9)

1. an automation leakage detection apparatus, including base (1) and the water tank (2) that is arranged on base (1), it is characterized in that, two polished rods (5) it are provided with in described water tank (2), two polished rods (5) are vertically arranged and water tank (2) is stretched out outward in polished rod (5) upper end, water tank (2) is arranged over the fixed plate (7) being all connected with two polished rods (5), it is provided with the upper sealing mechanism (4) for sealed valve (11) upper end between described fixed plate (7) and water tank (2) bottom, lower seal mechanism (3) for sealed valve (11) lower end and the locating support (10) positioned for valve (11), fixed plate (7) is provided with one for the cylinder (6) driving upper sealing mechanism (4);
The upper end cover (401) that described upper sealing mechanism (4) includes location-plate (402), is arranged on location-plate (402), described upper location-plate (402) is all slidably matched with two polished rods (5), the slidably direction of upper location-plate (402) is vertical, and described upper end cover (401) is provided with test pore (413);
The lower seal end cap (301) that described lower seal mechanism (3) includes lower location-plate (302), is arranged on lower location-plate (302), described lower location-plate (302) is all slidably matched with two polished rods (5), the slidably direction of lower location-plate (302) is vertical, and described lower seal end cap (301) is provided with lower test pore (311);
Described locating support (10) is fixed on lower location-plate (302);
The lower location-plate returning spring (9) being between lower location-plate (302) and water tank (2) bottom it is arranged with on described polished rod (5).
nullA kind of automation leakage detection apparatus the most according to claim 1,It is characterized in that: described upper sealing mechanism (4) also includes upper end cover briquetting (403)、Connecting plate (8)、Bolt (405) played by some plugs,Connecting plate (8) is in upper end cover briquetting (403) top and connecting plate (8) is connected with the piston rod of cylinder (6),Plug is played bolt (405) and is run through location-plate (402) and fill in and play bolt (405) and be fixed on connecting plate (8),Plug is beaten and is slidably connected between bolt (405) and upper location-plate (402),Plug is beaten and is arranged with the end cap returning spring (406) being between connecting plate (8) and upper location-plate (402) on bolt (405),Upper end cover (401) lower end is provided with the upper piece open slot (407) inserted for valve (11) end,Upper piece open slot (407) is cylindrical,Upper end cover (401) is provided with the upper test pore (413) connected with upper piece open slot (407),Upper piece open slot (407) madial wall is provided with ring-type upper groove (408),Upper groove (408) is coaxial with upper piece open slot (407),The upper sealing ring (409) coaxial with upper groove (408) it is provided with in upper groove (408);Annular groove (411) and some upperpush rod passages (410) it is additionally provided with on upper end cover (401), upperpush rod passage (410) lower end connects with upper annular groove (411), upper annular groove (411) lower end connects with upper groove (408), upper annular groove (411) is between upper groove (408) and upperpush rod passage (410), the upper press ring (412) for pushing upper sealing ring (409) it is provided with in upper annular groove (411), upper end cover briquetting (403) lower end is provided with some upperpush rods (404) for pushing upper press ring (412), upperpush rod passage (410) and upperpush rod (404) one_to_one corresponding, upperpush rod (404) is vertically arranged and upperpush rod (404) lower end is stretched in corresponding upperpush rod passage (410);
nullDescribed lower seal mechanism (3) also includes bottom end cover briquetting (303),Bottom end cover briquetting (303) is fixing with water tank (2) bottom,Lower seal end cap (301) upper end is provided with the lower piece of open slot (305) inserted for valve (11) end,Lower piece of open slot (305) is cylindrical,Lower end end cover is provided with the lower test pore (311) connected with lower piece of open slot (305),Lower piece of open slot (305) madial wall is provided with ring-type low groove (306),Low groove (306) is coaxial with lower piece of open slot (305),The lower seal (307) coaxial with low groove (306) it is provided with in low groove (306),Lower annular groove (309) and some down-pressed pole passages (308) it is additionally provided with on lower seal end cap (301),Down-pressed pole passage (308) upper end connects with lower annular groove (309),Lower annular groove (309) upper end connects with low groove (306),Lower annular groove (309) is between low groove (306) and down-pressed pole passage (308),The lower pressure ring (310) for pushing lower seal (307) it is provided with in lower annular groove (309),Bottom end cover briquetting (303) upper end is provided with some down-pressed poles (304) for pushing lower pressure ring (310),Down-pressed pole passage (308) and down-pressed pole (304) one_to_one corresponding,Down-pressed pole (304) vertically layout and down-pressed pole (304) are in the underface of corresponding down-pressed pole passage (308).
A kind of automation leakage detection apparatus the most according to claim 2, it is characterised in that: bolt (405) quantity beaten by described plug is two, and two plugs are played bolt (405) and are arranged symmetrically with centered by cylinder (6) piston rod axis.
A kind of automation leakage detection apparatus the most according to claim 1, it is characterized in that: described locating support (10) cylindrically and is coaxially disposed with lower seal end cap (301), locating support (10) internal via shape mates with valve (11) body shape clamping, and locating support (10) upper end-face edge offers the valve rod positioning port (101) of valve rod location in the middle of positioning valve (11).
A kind of automation leakage detection apparatus the most according to claim 1, it is characterized in that: described upper location-plate (402) is provided with two upper polished rod slide blocks, upper polished rod slide block and polished rod (5) one_to_one corresponding, upper polished rod slide block set is located at corresponding polished rod (5) and above and is slidably matched with corresponding polished rod (5);Also being provided with two lower polished rod slide blocks, lower polished rod slide block and polished rod (5) one_to_one corresponding on described lower location-plate (302), lower polished rod slide block set is located at corresponding polished rod (5) and above and is slidably matched with corresponding polished rod (5).
6. according to a kind of automation leakage detection apparatus described in Claims 2 or 3 or 4 or 5, it is characterised in that: described upper sealing ring (409) and lower seal (307) are hollow inflatable sealing ring.
A kind of automation leakage detection apparatus the most according to claim 6, it is characterised in that: the truncation surface of described upper sealing ring (409) and the truncation surface of lower seal (307) are the most rectangular.
8. according to a kind of automation leakage detection apparatus described in Claims 2 or 3 or 4 or 5, it is characterized in that: the bottom land of described upper piece open slot (407) is provided with the upper sealing gasket (414) fixing with upper end cover (401), and the bottom land of lower piece of open slot (305) is provided with the lower seal pad (312) fixing with lower seal end cap (301).
A kind of automation leakage detection apparatus the most according to claim 8, it is characterised in that: described upper sealing gasket (414) and lower seal pad (312) they are silicagel pad.
CN201610333703.5A 2016-05-18 2016-05-18 A kind of automation leakage detection apparatus CN105910769B (en)

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