CN206488917U - Safety valve testing platform - Google Patents

Abstract

Safety valve testing platform belongs to testing device of safety valve field, and the verification platform includes comprehensive platform, manual tugboat, tugboat cushion block rotating disk, pressure bearing, bearing bracket, Pneumatic jack, mechanism of taking blame for others and two wiper blocks.Reference plane support positioning and manual rotation platform during the coaxial cooperation formation safety valve grinding for the rotating disk circular hole that safety valve testing platform of the present utility model is provided with by the table top center of tugboat cushion block rotating disk, manual tugboat, pressure bearing, bearing bracket and comprehensive platform, so as to provide condition for the free corner posture for being accurately controlled safety valve, and then be conducive to the control of grinding precision and the raising of processing efficiency；When carrying out follow-up verification process, then directly can be coordinated using Pneumatic jack, mechanism of taking blame for others and two wiper blocks makes safety valve along axis direction lifting and clamping and positioning, so as to maintain original positioning datum, eliminates position error.

Description

Safety valve testing platform

Technical field

The utility model belongs to testing device of safety valve field, and in particular to a kind of safety valve testing platform.

Background technology

Existing safety valve testing and maintenance process include the action of the grinding step and safety valve of flap and valve seat Characteristic pressure verifies two key links of process, wherein when being ground using milling tool to flap and valve seat, need to be by valve seat It is fixed on flap in the horizontal-reel reference plane of grinding plate, in process of lapping, the manual horizontal-reel of grinding plate is needed Progressively to rotate manually, to coordinate direction and the angle needed for grinding.

On the other hand, after the completion of the grinding step to flap and valve seat, also need safety valve being integrally placed to other Verify on platform, and safety valve base retightened, then by the pressure gas source pipeline of offer compressed air from below to On be inserted perpendicularly into safety valve base, by being passed through given verification pressure to inside safety valve come the acting characteristic to safety valve Whether qualified pressure checking carried out.

However, the verification mode being directly passed through compressed air inside safety valve in a vertical manner is easy to valve body periphery Or the dust granules in valve pocket are brought into inside flap, the pollution and air-tightness for causing flap decline, and are even resulted in when serious Valve base of safety valve sealing surface produces pit and causes safety valve to scrap.In addition, safety valve is transferred into verification platform from grinding plate Process need tedious steps of dismantling and be loaded again etc., not only waste time and energy, inefficiency, while also can be because of the reference plane that is loaded Variation make grinding error increase and verification precise decreasing.

The content of the invention

In order to solve existing production technology need by safety valve grinding plate and verification platform between carry out transfer and Again it is loaded, its transfer process wastes time and energy, inefficiency, and is easily caused under mismachining tolerance increase and checking precision Drop, and, in a vertical manner directly the verification mode that is passed through compressed air inside safety valve be easy to valve body periphery or Dust granules in valve pocket are brought into inside flap, and the pollution and air-tightness for causing flap decline, and safety is even resulted in when serious The technical problem that valve is scrapped, the utility model provides a kind of safety valve testing platform.

The utility model technical solution adopted for solving the technical problem is as follows：

Safety valve testing platform, it includes comprehensive platform, manual tugboat, tugboat cushion block rotating disk, pressure bearing, bearing retainer Frame, Pneumatic jack, mechanism of taking blame for others and two wiper blocks, the table top center of the comprehensive platform are provided with rotating disk circular hole, are turning The both sides of disk circular hole are symmetrically provided with briquetting chute；Two wiper blocks toward each other, pressure corresponding with one respectively both it Block slide is connected；Bearing bracket includes two channel steel upright posts and a bearing supporting plate, bearing supporting plate and two channel steel upright posts Middle epimere be respectively fixedly connected, its three collectively forms a gate frame；The upper end of two channel steel upright posts with comprehensive platform Table top lower end is connected；The center of bearing supporting plate provided with taking blame for others through hole, it is described take blame for others through hole and rotating disk circular hole it is concentric；Pressure bearing Lower surface is coaxially fixed on the upper end for through hole of taking blame for others；Tugboat cushion block rotating disk, manual tugboat, the pressure bearing sequentially company of rotating coaxially Connect；The lower end of the mechanism of taking blame for others and the jack piston rod of Pneumatic jack are coaxially connected, the upper end for mechanism of taking blame for others with manually The lower end of tugboat is coaxial, flexible connection both it；The external diameter of manual tugboat and tugboat cushion block rotating disk is respectively less than the interior of rotating disk circular hole Footpath.

The center of above-mentioned tugboat cushion block rotating disk is provided with rotating disk air pipe through-hole；The center of manual tugboat lower surface is provided with and taken blame for others Blind hole is connected, upper surface is provided with two and the tugboat O-ring seals for taking blame for others concentric taking blame for others；The center of manual tugboat upper surface is set There is tugboat air pipe through-hole.

Above-mentioned mechanism of taking blame for others includes take blame for others cylinder, cleaned air conduit, air hose piston, two air hose piston limit spiral shells Bolt, end are blocked up and compressed air interface pipe, and the upper end cover center of the cylinder of taking blame for others is provided with upper end cover centre bore, cylinder upper end of taking blame for others Lid is additionally provided with the upper end cover O-ring seals concentric with upper end cover centre bore；The upper end of cleaned air conduit passes through the upper of cylinder of taking blame for others End cap central bore, is slidably connected both it, and the lower end of cleaned air conduit passes through the center of air hose piston, is connected both it and altogether With as a piston rod mechanism of taking blame for others；Two air hose piston limit bolts are respectively positioned on the middle and lower part for cylinder of taking blame for others, both it It is symmetrical to pass through the side wall for cylinder of taking blame for others and seal fastening；The lower end of air hose piston is by two air hose piston limit bolts Support and spacing；The stifled coaxial lower end for being fixed on cylinder of taking blame for others in end, it is stifled with end positioned at the lower section of air hose piston limit bolt Inner barrel of taking blame for others between upper surface is provided with an air-flow vortex chamber, and compressed air interface pipe is tangentially through cylinder of taking blame for others The side wall of body is simultaneously connected with air-flow vortex chamber；The cylinder of taking blame for others through hole and withstands on connection of taking blame for others through taking blame for others for supporting plate center On the bottom surface of blind hole；The top of cleaned air conduit is sequentially through take blame for others through hole, pressure bearing, take blame for others connection blind hole, tugboat air The rotating disk air pipe through-hole of pipe through-hole and tugboat cushion block center of turntable；The stifled lower surface in end and the jack piston of Pneumatic jack Bar upper end is coaxially connected.

The internal diameter of above-mentioned connection blind hole of taking blame for others is identical with the external diameter for cylinder of taking blame for others；The internal diameter of pressure bearing is equal to cylinder of taking blame for others 1.2 times of outside dimension.

Above-mentioned wiper block includes integrally formed pedestal, the pressing plate of L fonts and two rectangle chutes, the L fonts The long side horizontal positioned of L-type of pressing plate, its L-type short side is straight down；Two rectangle chutes are symmetrically opened in the pressure of L fonts The L-type short side root of plate；The lower end of L-type short side is connected with pedestal；The recess width of the rectangle chute is the platform of comprehensive platform 1.2 times of face thickness；The bottom surface spacing of the respective chute of two rectangle chutes is equal to 1.2 times of groove width of briquetting chute.

The beneficial effects of the utility model are：The safety valve testing platform passes through tugboat cushion block rotating disk, manual tugboat, pressure The coaxial cooperation for the rotating disk circular hole that bearing, bearing bracket and comprehensive platform table top center are provided with, during formation safety valve grinding Reference plane support positioning and manual rotation platform, so that condition is provided for the corner posture that freedom is accurately controlled safety valve, And then be conducive to the control of grinding precision and the raising of processing efficiency.And when carrying out follow-up verification process, then can be direct Being coordinated using Pneumatic jack, mechanism of taking blame for others and two wiper blocks makes safety valve along axis direction lifting and clamping and positioning, Process is shifted and reinstalled to safety valve so as to exempt, and maintains original tugboat cushion block rotating disk positioning reference plane not Become, so as to maintain original positioning datum, eliminate position error.

Support and spacing, compressed air interface pipe of the lower end of air hose piston by two air hose piston limit bolts For being connected with air-pressure controlling system, clean compressed air is filled with along the tangential direction of air-flow vortex chamber inner sidewall first Inside it, then cleaned air hose enters below the valve pocket of safety valve.In the process, clean compressed air is first along air-flow whirlpool The air-flow vortex of chamber inner sidewall formation individual event rotation is revolved, the turning effort that it is produced is by the machining chips and powder in eddy airstream Dirt particle produces centrifugal action, so that it can not upwards be transported further along the cleaned air conduit positioned at air-flow vortex chamber center It is dynamic, and then play a part of separated from contaminants, it is ensured that for the cleanliness factor of the compressed air of safety valve testing, reduction flap quilt The pollution of grain thing and cause to reveal the risk probability scrapped, and allow safety valve verification operation safer, reliable Efficient implementation under state.

In addition the safety valve testing platform is easy to operate also with simple and practical, with low cost, is easy to popularize The advantages of.

Brief description of the drawings

Fig. 1 is the stereogram of the utility model safety valve testing platform；

Fig. 2 is Fig. 1 configuration schematic diagram；

Fig. 3 is Fig. 1 axial cross-sectional views；

Fig. 4 is the dimensional structure diagram of the utility model comprehensive platform；

Fig. 5 is the dimensional structure diagram of the utility model bearing bracket；

Fig. 6 is the axial cross-sectional views of the manual tugboat of the utility model；

Fig. 7 is that the utility model is taken blame for others the dimensional structure diagram of mechanism；

Fig. 8 is Fig. 7 axial cross-sectional views；

Fig. 9 is the dimensional structure diagram of the utility model wiper block.

Embodiment

The utility model is described in further details below in conjunction with the accompanying drawings.

As shown in Figures 1 to 9, safety valve testing platform of the present utility model includes comprehensive platform 1, manual tugboat 2, tugboat Cushion block rotating disk 3, pressure bearing 4, bearing bracket 5, Pneumatic jack 6, mechanism of taking blame for others 7 and two wiper blocks 8, comprehensive platform 1 Table top center be provided with rotating disk circular hole 1-1, rotating disk circular hole 1-1 both sides symmetrically be provided with briquetting chute 1-2.Wiper block 8 Pressing plate 8-2 and two rectangle chute 8-3 including integrally formed pedestal 8-1, L font, the pressing plate 8-2 of L fonts L-type Long side horizontal positioned, its L-type short side is straight down.Two rectangle chute 8-3 symmetrically open up the pressing plate 8-2 with L fonts L-type short side root.The lower end of L-type short side is connected with pedestal 8-1.Rectangle chute 8-3 recess width is the platform of comprehensive platform 1 1.2 times of face thickness.Two rectangle chute 8-3 each chute bottom surface spacing be equal to briquetting chute 1-2 groove width 1.2 Times.Two wiper blocks 8 are disposed opposite to each other, rectangle chute 8-3 briquetting chute 1-2 slips corresponding with one respectively both it Connection.Bearing bracket 5 includes two channel steel upright post 5-1 and bearing a supporting plate 5-2, bearing supporting plate 5-2 and two channel steel upright posts 5-1 middle epimere is respectively fixedly connected, and its three collectively forms a gate frame.Two channel steel upright post 5-1 upper end with synthesis The table top lower end of platform 1 is connected.Bearing supporting plate 5-2 center is provided with the through hole 5-2-1 that takes blame for others, and the through hole 5-2-1 that takes blame for others justifies with rotating disk Hole 1-1 is concentric.The lower surface of pressure bearing 4 is coaxially fixed on the upper end for the through hole 5-2-1 that takes blame for others.Tugboat cushion block rotating disk 3, drag manually Wheel 2, pressure bearing 4 sequentially rotate coaxially connection.

The lower end of mechanism of taking blame for others 7 and the jack piston rod of Pneumatic jack 6 are coaxially connected, the upper end of mechanism of taking blame for others 7 with The lower end of manual tugboat 2 is coaxial, flexible connection both it.The external diameter of manual tugboat 2 and tugboat cushion block rotating disk 3 is respectively less than rotating disk circle Hole 1-1 internal diameter.

The center of tugboat cushion block rotating disk 3 is provided with rotating disk air pipe through-hole.The center of the manual lower surface of tugboat 2 is provided with the company of taking blame for others Blind hole 2-1 is met, upper surface is provided with two and the tugboat O-ring seals 2-3 for taking blame for others concentric taking blame for others；The manual upper surface of tugboat 2 Center is provided with tugboat air pipe through-hole 2-2.

Mechanism of taking blame for others 7 includes take blame for others cylinder 7-1, cleaned air conduit 7-2, air hose piston 7-3, two air hose piston limits Position bolt 7-4, the stifled 7-5 and compressed air interface pipe 7-6 in end, the upper end cover center for the cylinder 7-1 that takes blame for others are provided with upper end cover centre bore, Cylinder 7-1 upper end covers of taking blame for others are additionally provided with the upper end cover O-ring seals 7-1-2 concentric with upper end cover centre bore；Cleaned air conduit 7-2 Upper end pass through the cylinder 7-1 upper end cover centre bore of taking blame for others, be slidably connected both it, cleaned air conduit 7-2 lower end is through sky Tracheae piston 7-3 center, is connected both it and turns into a piston rod mechanism of taking blame for others jointly.Two air hose piston limit spiral shells Bolt 7-4 is respectively positioned on the middle and lower part for the cylinder 7-1 that takes blame for others, symmetrical both it to pass through the side wall for the cylinder 7-1 that takes blame for others and seal fastening.It is empty Tracheae piston 7-3 lower end is by two air hose piston limit bolt 7-4 support and spacing.The stifled 7-5 in end is coaxially fixed on Take blame for others cylinder 7-1 lower end, the cylinder of taking blame for others between the stifled 7-5 upper surfaces in air hose piston limit bolt 7-4 lower section and end Provided with an air-flow vortex chamber 7-1-1 inside body 7-1, compressed air interface pipe 7-6 is tangentially passed through and is taken blame for others cylinder 7-1's Side wall is simultaneously connected with air-flow vortex chamber 7-1-1, and the compressed air interface pipe 7-6 other end is used to be connected with control pressurer system. On the bottom surface that the cylinder 7-1 that takes blame for others takes blame for others connection blind hole 2-1 through the through hole 5-2-1 and withstanding on of taking blame for others at supporting plate 5-2 centers.Cleaning Air hose 7-2 top is sequentially through take blame for others through hole 5-2-1, pressure bearing 4, connection blind hole of taking blame for others 2-1, tugboat air pipe through-hole 2-2 and the rotating disk air pipe through-hole at the center of tugboat cushion block rotating disk 3.The stifled 7-5 in end lower surface and the jack of Pneumatic jack 6 are lived Stopper rod upper end is coaxially connected.

Connection blind hole of taking blame for others 2-1 internal diameter is equal to 1.2 times with the outside dimension for the cylinder 7-1 that takes blame for others.Pressure bearing 4 it is interior Footpath is more than the external diameter for the cylinder 7-1 that takes blame for others.

During concrete application safety valve testing platform of the present utility model, grinding step is carried out on the verification platform first. Pneumatic jack 6 is first set to minimize position, now, air hose piston 7-3 lower end is by two air hose piston limit spiral shells Bolt 7-4 support and spacing, cleaned air conduit 7-2 top is contracted to inside the rotating disk air pipe through-hole of tugboat cushion block rotating disk 3, So that cleaned air conduit 7-2 top can not be higher by the upper surface of tugboat cushion block rotating disk 3.In the case, tugboat cushion block turns The upper surface of disk 3 can directly as support safety valve rotatable platform, the valve seat of safety valve is coaxially seated at tugboat cushion block The upper surface of rotating disk 3, you can conventional grinding and processing are carried out to it using milling tool, meanwhile, with hand rotation manual tugboat 2, The coaxial rotating of tugboat cushion block rotating disk 3 can be driven by the stiction between manual tugboat 2 and tugboat cushion block rotating disk 3, so that The corner posture for being accurately controlled safety valve for freedom provides condition, and then is conducive to raising and the grinding precision of processing efficiency Control.Tugboat cushion block rotating disk 3 can be changed and adjusted according to different safety valve base thickness, to meet different classes The positioning of type safety valve clamps demand.

When grinding step is completed and needs to carry out qualified verification to the aerodynamic characteristic of safety valve, first by cleaned air conduit 7- 2 upper end and the valve pocket of safety valve are connected, and then, two wiper blocks 8 are symmetrically moved and drawn close, make two both it The pressing plate 8-2 long side of L-type is smaller than the valve seat external diameter of safety valve.

Hereafter, without changing the position of safety valve, and only need to directly initiate Pneumatic jack 6, pass through Pneumatic jack 6 7-5 is blocked up in piston rod promote-side, so that cylinder 7-1 liftings straight up of taking blame for others, when the upper end for the cylinder 7-1 that takes blame for others coaxially is withstood After cylinder connection blind hole 2-1 bottom surface, its further up lifting will make the upper of the manual lower surface of tugboat 2 and pressure bearing 4 End face is separated, and causes manual tugboat 2 and the synchronous lifting of tugboat cushion block rotating disk 3, until tugboat cushion block rotating disk 3 is overall by safety valve Raise, and the valve seat of safety valve is radially symmetrically compressed by two wiper blocks 8, so as to complete the fixation to safety valve.

Finally, compressed air interface pipe 7-6 and control pressurer system are connected, clean compressed air is first along air-flow whirlpool The tangential direction of rotation chamber 7-1-1 madial walls is filled with inside it, and hereafter air hose piston 7-3 is moved upwards, and drives clean air Pipe 7-2 top is upwardly into inside the valve pocket of safety valve, and tugboat O-ring seals 2-3 and upper end cover O-ring seals 7-1-2 are equal Play the sealing function to its respective residing docking end face.During verification, clean compressed air is first along air-flow whirlpool The air-flow vortex of chamber 7-1-1 madial walls formation individual event rotation is revolved, its turning effort produced will be broken to the processing in eddy airstream Bits and dust granules produce centrifugal action, so that it can not be further along the cleaning positioned at air-flow vortex chamber 7-1-1 centers Air hose 7-2 is moved upwards, and then plays a part of separated from contaminants, it is ensured that the cleaning for the compressed air of safety valve testing Degree, reduction flap is by particulate contamination and causes leakage or even the risk probability scrapped, and make it that the verification operation of safety valve can With the efficient implementation in the state of safer, reliable.

Claims (5)

1. safety valve testing platform, it is characterised in that：The platform includes comprehensive platform（1）, manual tugboat（2）, tugboat cushion block turns Disk（3）, pressure bearing（4）, bearing bracket（5）, Pneumatic jack（6）, mechanism of taking blame for others（7）With two wiper blocks（8）, it is described Comprehensive platform（1）Table top center be provided with rotating disk circular hole（1-1）, in rotating disk circular hole（1-1）Both sides symmetrically provided with briquetting slide Groove（1-2）；Two wiper blocks（8）Toward each other, briquetting chute corresponding with one respectively both it（1-2）It is slidably connected； Bearing bracket（5）Including two channel steel upright posts（5-1）With a bearing supporting plate（5-2）, bearing supporting plate（5-2）It is vertical with two channel-section steels Post（5-1）Middle epimere be respectively fixedly connected, its three collectively forms a gate frame；Two channel steel upright posts（5-1）Upper end it is equal With comprehensive platform（1）Table top lower end be connected；Bearing supporting plate（5-2）Center provided with taking blame for others through hole（5-2-1）, it is described take blame for others it is logical Hole（5-2-1）With rotating disk circular hole（1-1）With one heart；Pressure bearing（4）Lower surface be coaxially fixed on through hole of taking blame for others（5-2-1）It is upper End；Tugboat cushion block rotating disk（3）, manual tugboat（2）, pressure bearing（4）Sequentially rotate coaxially connection；The mechanism of taking blame for others（7）'s Lower end and Pneumatic jack（6）Jack piston rod be coaxially connected, mechanism of taking blame for others（7）Upper end and manual tugboat（2）Under End is coaxial, flexible connection both it；Manual tugboat（2）With tugboat cushion block rotating disk（3）External diameter be respectively less than rotating disk circular hole（1-1）'s Internal diameter.

2. safety valve testing platform as claimed in claim 1, it is characterised in that：The tugboat cushion block rotating disk（3）Center set There is rotating disk air pipe through-hole；Manual tugboat（2）The center of lower surface is provided with connection blind hole of taking blame for others（2-1）, taking blame for others, upper surface is set There are two and the tugboat O-ring seals for taking blame for others concentric（2-3）；Manual tugboat（2）The center of upper surface is logical provided with tugboat air hose Hole（2-2）.

3. safety valve testing platform as claimed in claim 1, it is characterised in that：The mechanism of taking blame for others（7）Including cylinder of taking blame for others （7-1）, cleaned air conduit（7-2）, air hose piston（7-3）, two air hose piston limit bolts（7-4）, end it is stifled（7-5）With Compressed air interface pipe（7-6）, the cylinder of taking blame for others（7-1）Upper end cover center be provided with upper end cover centre bore, cylinder of taking blame for others（7- 1）Upper end cover is additionally provided with the upper end cover O-ring seals concentric with upper end cover centre bore（7-1-2）；Cleaned air conduit（7-2）It is upper Hold through cylinder of taking blame for others（7-1）Upper end cover centre bore, be slidably connected both it, cleaned air conduit（7-2）Lower end through sky Tracheae piston（7-3）Center, be connected both it and turn into a piston rod mechanism of taking blame for others jointly；Two air hose piston limits Bolt（7-4）It is respectively positioned on cylinder of taking blame for others（7-1）Middle and lower part, it is symmetrical through cylinder of taking blame for others both it（7-1）Side wall and close It is tamping solid；Air hose piston（7-3）Lower end by two air hose piston limit bolts（7-4）Support and spacing；End is stifled （7-5）Coaxially it is fixed on cylinder of taking blame for others（7-1）Lower end, positioned at air hose piston limit bolt（7-4）Lower section and end it is stifled（7- 5）Cylinder of taking blame for others between upper surface（7-1）Inside is provided with an air-flow vortex chamber（7-1-1）, compressed air interface pipe（7-6） Tangentially through cylinder of taking blame for others（7-1）Side wall and with air-flow vortex chamber（7-1-1）Connection；The cylinder of taking blame for others（7-1） Through supporting plate（5-2）The through hole of taking blame for others at center（5-2-1）And withstand on connection blind hole of taking blame for others（2-1）Bottom surface on；Clean air Pipe（7-2）Top sequentially through taking blame for others through hole（5-2-1）, pressure bearing（4）, connection blind hole of taking blame for others（2-1）, tugboat air hose Through hole（2-2）With tugboat cushion block rotating disk（3）The rotating disk air pipe through-hole at center；End is stifled（7-5）Lower surface and Pneumatic jack （6）Jack piston rod upper end be coaxially connected.

4. safety valve testing platform as claimed in claim 3, it is characterised in that：The connection blind hole of taking blame for others（2-1）Internal diameter With cylinder of taking blame for others（7-1）External diameter it is identical；Pressure bearing（4）Internal diameter be equal to and take blame for others cylinder（7-1）Outside dimension 1.2 Times.

5. safety valve testing platform as claimed in claim 1, it is characterised in that：The wiper block（8）Including integrally formed Pedestal（8-1）, L fonts pressing plate（8-2）With two rectangle chutes（8-3）, the pressing plate of the L fonts（8-2）The long side of L-type Horizontal positioned, its L-type short side is straight down；Two rectangle chutes（8-3）Symmetrically it is opened in the pressing plate of L fonts（8-2） L-type short side root；The lower end of L-type short side and pedestal（8-1）Connection；The rectangle chute（8-3）Recess width be comprehensive Platform（1）1.2 times of mesa thickness；Two rectangle chutes（8-3）The bottom surface spacing of respective chute is equal to briquetting chute（1-2） 1.2 times of groove width.