CN105784285A - Automatic valve leak-checking device - Google Patents

Automatic valve leak-checking device Download PDF

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Publication number
CN105784285A
CN105784285A CN201610334110.0A CN201610334110A CN105784285A CN 105784285 A CN105784285 A CN 105784285A CN 201610334110 A CN201610334110 A CN 201610334110A CN 105784285 A CN105784285 A CN 105784285A
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CN
China
Prior art keywords
plate
location
valve
seal
open slot
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CN201610334110.0A
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Chinese (zh)
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CN105784285B (en
Inventor
宣月罗
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宣月罗
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Priority to CN201610334110.0A priority Critical patent/CN105784285B/en
Publication of CN105784285A publication Critical patent/CN105784285A/en
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Publication of CN105784285B publication Critical patent/CN105784285B/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 automatic valve leak-checking device and relates to the field of valve sealing performance test. The device comprises a pedestal and a water tanker which is arranged on the pedestal; the water tank is therein provided with two polished rods; the two polished rods are vertically arranged and the upper ends of the polished rods extend out from the water tank; a fixed plate which is connected with the two polished rods is arranged over the water tank; an upper sealing mechanism which is used for sealing the upper end of the valve, a lower sealing mechanism which is used for sealing the lower end of the valve, and a positioning support which is used for positioning the valve are arranged between the fixed plate and the water tank bottom; the fixed plate is provided with an air cylinder which is used for driving the upper sealing mechanism. The invention is aimed at solving the problems of inconvenient clamping, low efficiency, high labor consumption and low automation degree in present valve sealing performance test methods, and provides a valve leak-checking device which has high test efficiency, convenient clamping, and high automation degree.

Description

A kind of automatization valve leak-checking equipment

Technical field

The present invention relates to sealing performance testing machine field, particularly relate to automatization's 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 not high to the test method automaticity of valve, when carrying out sealing property test, sealing gasket is generally adopted 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 passes into compression 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 the problem that current valve seal performance test methods clamping is inconvenient, efficiency is low, expense manpower, automaticity is not high, it is proposed to a kind of testing efficiency height, convenient mounting and clamping, valve leak-checking equipment that automaticity is high.

To achieve these goals, the present invention is by the following technical solutions: a kind of automatization valve leak-checking equipment, including base and be arranged on the water tank 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 fixing plate being all connected with two polished rods, the upper sealing mechanism for sealed valve upper end it is provided with between described fixing plate and water tank bottom, lower seal mechanism for sealed valve lower end and the locating support for valve location, fixing plate is provided with a cylinder for 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;

Described polished rod is arranged with the lower location-plate returning spring being between lower location-plate and water tank bottom;

Described water tank bottom is additionally provided with the limited block for retaining lower seal mechanism.

As preferably, described upper sealing mechanism also includes upper end cover briquetting, connecting plate, some top plugs play bolt, connecting plate is in above upper end cover briquetting and connecting plate is connected with the piston rod of cylinder, top plug is beaten location-plate and top plug on bolt-through and is beaten and be bolted on connecting plate, top plug is beaten and is slidably connected between bolt and upper location-plate, top 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 mean for upper piece open slot that valve end inserts, 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 medial wall is provided with the upper groove of ring-type, upper groove is coaxial with upper piece open slot, the upper sealing ring coaxial with upper groove it is provided with in upper groove;Upper end cover is additionally provided with annular groove and some upperpush rod passages, 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 and bolt played by some lower plugs,Bottom end cover briquetting is in below lower location-plate,Lower plug is played location-plate and lower plug under bolt-through and is beaten and be bolted on bottom end cover briquetting,Lower plug is beaten and is slidably connected between bolt and lower location-plate,Lower plug is beaten and is arranged with the end cap returning spring being between lower location-plate and bottom end cover briquetting on bolt,Lower seal end cap upper end is provided with mean for the lower piece of open slot that valve end inserts,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 medial wall is provided with the low groove of ring-type,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 seal end cap is additionally provided with lower annular groove and some down-pressed pole passages,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 upper end is stretched in corresponding down-pressed pole passage;Described limited block is positioned at the water tank bottom immediately below bottom end cover briquetting.

As preferably, it is two that described top plug beats bolt quantity, and two top plugs are played bolt and are arranged symmetrically with centered by cylinder piston rod axis;Bolt quantity beaten by described lower plug is two, and under two, plug is played bolt and is 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 for 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 all 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;313: bolt played by lower plug;4: upper sealing mechanism;401: upper end cover;402: upper location-plate;403: upper end cover briquetting;404: upperpush rod;405: top plug plays bolt;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: fixing plate;8: connecting plate;9: lower location-plate returning spring;10: locating support;101: valve rod positioning port;11: valve;12: limited block;13: water level.

Detailed description of the invention

Below in conjunction with accompanying drawing and specific embodiments, the present invention will be further described.

nullA kind of automatization valve leak-checking equipment,Referring to Fig. 1、Fig. 2、Fig. 3,Including a base 1 and be arranged on a water tank 2 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 fixing 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 fixing 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,Fixing plate 7 is provided with a cylinder 6 for driving upper sealing mechanism 4,The cylinder body of cylinder 6 is inverted and is fixed on fixing plate 7,The piston rod of cylinder 6 is connected through fixing plate 7 with upper sealing mechanism 4,Upper sealing mechanism 4 is driven by cylinder 6 and moves up and down.The limited block 12 for retaining lower seal mechanism 3 it is additionally provided with bottom described water tank 2.

As shown in Figure 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 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, namely going up location-plate 402 and two polished rods 5 are all slidably matched, the slidably direction of upper location-plate 402 is vertical.Described upper sealing mechanism 4 also includes upper end cover briquetting 403, connecting plate 8 and two top plugs play bolt 405, 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 top plugs are played bolt 405 and are run through location-plate 402 and top plug is played bolt 405 and is fixed on connecting plate 8, and two top plugs play bolt 405 and are arranged symmetrically with centered by cylinder 6 piston rod axis, top plug is beaten and is slidably connected between bolt 405 and upper location-plate 402, top 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 mean for upper piece open slot 407 that valve 11 upper end is inserted; 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 the upper sealing gasket 414 fixing with 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 medial wall is provided with the upper groove 408 of ring-type, 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;Upper end cover 401 is additionally provided with a upper annular groove 411 and eight upperpush rod passages 410, 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 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, upperpush rod 404 may pass through upperpush rod passage 410 and pushes upper press ring 412, thus the upper sealing ring 409 of extruding.

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 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, namely descending location-plate 302 and two polished rods 5 to be all slidably matched, the slidably direction of lower location-plate 302 is vertical.Described lower seal mechanism 3 also includes plug under bottom end cover briquetting 303 and two and plays bolt 313, bottom end cover briquetting 303 is in below lower location-plate 302, lower plug is played bolt 313 and is run through lower location-plate 302 and lower plug is played bolt 313 and is fixed on bottom end cover briquetting 303, and plug is played bolt 313 and is arranged symmetrically with centered by cylinder 6 piston rod axis under two, lower plug is beaten and is slidably connected between bolt 313 and lower location-plate 302, and lower plug is beaten and is arranged with the end cap returning spring 406 being between lower location-plate 302 and bottom end cover briquetting 303 on bolt 313.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 mean for the lower piece of open slot 305 that valve 11 bottom is inserted, as shown in Figure 6, lower piece of open slot 305 also cylindrical and lower piece open slot 305 opening part 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 the lower seal pad 312 fixing with 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 medial wall is provided with the low groove 306 of ring-type,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,Lower seal end cap 301 is additionally provided with a lower annular groove 309 and eight down-pressed pole passages 308,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 down-pressed poles 304 for pushing lower pressure ring 310, down-pressed pole passage 308 and down-pressed pole 304 one_to_one corresponding, and down-pressed pole 304 is vertically arranged and down-pressed pole 304 upper end is stretched in corresponding down-pressed pole passage 308;Described limited block 12 is positioned at bottom the water tank 2 immediately below bottom end cover briquetting 303.Instantly when sealing mechanism 3 is pushed and moves down, bottom end cover briquetting 303 contacts retaining with limited block 12, and down-pressed pole 304 can pass corresponding down-pressed pole passage 308 and push lower pressure ring 310, thus extruding 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 the middle valve rod location of positioning valve 11.

Two described polished rods 5 are all arranged with the lower location-plate returning spring 9 being between bottom lower location-plate 302 and water tank 2.Owing to location-plate 302 lower in test process can be pressed down, the lower location-plate 302 tested can be returned to original height by lower location-plate returning spring 9, 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 13 requirement can be higher than the middle valve rod height of valve 11 in valve 11 test process, as shown in Figure 7.During test, valve 11 is vertically put in locating support 10, valve 11 sidewall and locating support 10 endoporus clamping location, 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 slowly 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 bottom end cover briquetting 303 contacts retaining with the limited block 12 bottom water tank 2, 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, lower seal 307 inward expansion, embraces 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 13 in water tank 2, higher than the middle stem position of valve 11, can be tested.

Test mode can be divided into following two: 1, valve rod is opened, and adds air pressure in the test pore of upper and lower two end covers simultaneously, and in the middle of observing, whether valve rod place has bubble to spill, and just can determine whether in the middle of when valve is opened, whether valve rod place leaks;2, valve rod is closed, the lower test pore of lower seal end cap is connected with the water in water tank, up add air pressure in the upper test pore of end cover, whether lower test pore place and the middle valve rod place of observing lower seal end cap have bubble to spill, when just can determine whether valve closing, whether between upper and lower two cavitys and middle valve rod place leaks.

Claims (9)

1. automatization's valve leak-checking equipment, including base (1) and be arranged on the water tank (2) 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 fixing 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 fixing plate (7) and water tank (2) bottom, for the lower seal mechanism (3) of sealed valve (11) lower end and the locating support (10) that positions for valve (11), fixing plate (7) is provided with a cylinder (6) for 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) and two polished rods (5) are all slidably matched, 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) and two polished rods (5) are all slidably matched, 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);
Described polished rod (5) is arranged with the lower location-plate returning spring (9) being between lower location-plate (302) and water tank (2) bottom;
Described water tank (2) bottom is additionally provided with the limited block (12) for retaining lower seal mechanism (3).
null2. a kind of automatization according to claim 1 valve leak-checking equipment,It is characterized in that: described upper sealing mechanism (4) also includes upper end cover briquetting (403)、Connecting plate (8)、Some top plugs play bolt (405),Connecting plate (8) is in upper end cover briquetting (403) top and connecting plate (8) is connected with the piston rod of cylinder (6),Top plug is played bolt (405) and is run through location-plate (402) and top plug is played bolt (405) and is fixed on connecting plate (8),Top plug is beaten and is slidably connected between bolt (405) and upper location-plate (402),Top 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 mean for upper piece open slot (407) that valve (11) end is inserted,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) medial wall is provided with the upper groove (408) of ring-type,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);Upper end cover (401) is additionally provided with annular groove (411) and some upperpush rod passages (410), 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) and bolt (313) played by some lower plugs,Bottom end cover briquetting (303) is in lower location-plate (302) lower section,Lower plug is played bolt (313) and is run through lower location-plate (302) and lower plug is played bolt (313) and is fixed on bottom end cover briquetting (303),Lower plug is beaten and is slidably connected between bolt (313) and lower location-plate (302),Lower plug is beaten and is arranged with the end cap returning spring (406) being between lower location-plate (302) and bottom end cover briquetting (303) on bolt (313),Lower seal end cap (301) upper end is provided with mean for the lower piece of open slot (305) that valve (11) end is inserted,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) medial wall is provided with the low groove (306) of ring-type,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 seal end cap (301) is additionally provided with lower annular groove (309) and some down-pressed pole passages (308),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) is vertically arranged and down-pressed pole (304) upper end is stretched in corresponding down-pressed pole passage (308);Described limited block (12) is positioned at water tank (2) bottom immediately below bottom end cover briquetting (303).
3. a kind of automatization according to claim 2 valve leak-checking equipment, it is characterised in that: it is two that described top plug beats bolt (405) quantity, and two top plugs are played bolt (405) and are arranged symmetrically with centered by cylinder (6) piston rod axis;Bolt (313) quantity beaten by described lower plug is two, and under two, plug is played bolt (313) and is arranged symmetrically with centered by cylinder (6) piston rod axis.
4. a kind of automatization according to claim 1 valve leak-checking equipment, 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 for the valve rod positioning port (101) of valve rod location in the middle of positioning valve (11).
5. a kind of automatization according to claim 1 valve leak-checking equipment, 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. a kind of automatization valve leak-checking equipment according to 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.
7. a kind of automatization according to claim 6 valve leak-checking equipment, it is characterised in that: the truncation surface of described upper sealing ring (409) and the truncation surface of lower seal (307) are all rectangular.
8. a kind of automatization valve leak-checking equipment according to 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).
9. a kind of automatization according to claim 8 valve leak-checking equipment, it is characterised in that: described upper sealing gasket (414) and lower seal pad (312) they are silicagel pad.
CN201610334110.0A 2016-05-18 2016-05-18 A kind of automation valve leak-checking equipment CN105784285B (en)

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CN105784285A true CN105784285A (en) 2016-07-20
CN105784285B CN105784285B (en) 2018-06-08

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107091343A (en) * 2017-06-26 2017-08-25 永高股份有限公司 A kind of fuel gas ball valve air leak tester

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