CN202757741U

CN202757741U - Tube underwater air pressure testing machine

Info

Publication number: CN202757741U
Application number: CN 201220219978
Authority: CN
Inventors: 董斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-16
Filing date: 2012-05-16
Publication date: 2013-02-27
Anticipated expiration: 2022-05-16

Abstract

The utility model relates to a tube underwater air pressure testing machine which is composed of a control box, a pressure dial gauge, elevating cylinders, a bracket, radial clamping driving mechanisms, axial plugging movable and static plug assemblies, a support, a water tank and the like. The control box is provided with a pressure testing starting button, a pressure testing stopping button and the pressure dial gauge. The inside of the control box is provided with an industrial control machine, a control execution mechanism and the like. Each radial clamping driving mechanism is composed of a driving cylinder, a rocking handle, a driving shaft and the like. Each radial clamping device is composed of a driving disk, guide pins, clamping plates, a clamping plate fixing rack and the like. The axial plugging static plug assembly is composed of plugs, a plug fixing plate and the like. The axial plugging movable plug assembly is composed of movable plugs, sealing pads, a front baffle plate, driving cylinders, a rear baffle plate and the like. Fixing frames of the radial clamping driving mechanisms, the radial clamping devices, the axial plugging static plug assembly and the axial plugging movable plug assembly can slide along the bracket to adjust the position and can be fixed on the bracket via fixing screws.

Description

The pipe underwater pressure tester

Technical field

The utility model relates to a kind of air underwater pressure test for pipe, particularly elongated small-bore pipe or tightness test device under water.

Background technology

Pipe is generally for delivery of fluid, therefore must guarantee its sealing, and plant-manufactured pipe carries out impermeability test before dispatching from the factory, in order to avoid substandard product is sneaked into certified products, and the effective method of impermeability test is exactly air underwater pressure test.The air underwater pressure test method of pipe is: the shutoff two ends mouth of pipe, pipe is immersed in the water, Xiang Guanzhong is filled with pressurized air to required pressure, time pressurize in accordance with regulations, whether observe during this period the water surface has bubble to emerge, judge with this whether the pipe impermeability is qualified, the method can find that the difficult of steel pipe existence is the defective of finding of naked eye, such as micro-crack, spilehole etc.Existing air pressure testing machine majority can only be tested on one one ground, and work efficiency is low; The key of testing machine is the axial plugging mechanism at pipe two ends and the radially clamping device of elongated tubular.The existing machine once number of tubes of simultaneously pressure testing is limited, inefficiency; The machine of the branched pipe of existing energy single test, its a plurality of shutoff plugs are fixed in same motion, can't guarantee the effective sealing of uneven in length pipe; Existing air pressure testing machine has and adopts from the top downward clamping pipe, and this mode is simple, but because it is arranged in the experiment table top, and the one, affect pipe to the loading and unloading of testing machine, the 2nd, affect the visual detection of air-tight test; Existing air pressure testing machine has the horizontal clamping pipe of employing, it drives the air cylinder driven that adopts tangential movement, therefore unavoidably want the determinants space, and be that a hold assembly is equipped with a driving mechanism, elongated pipe often has much radially clamping device, cause like this device complicated, be difficult to the synchronous of the horizontal clamping of maintenance; Utility model patent 200920104126.8 underwater steel tube pressure testers that adopt rotation location hook fixing tube are arranged, because rotary hook will take up room, therefore arrange that once branched pipe testing has difficulties; Existing testing machine pipe radially clamping device can not guarantee pipe after clamping with the automatic centring of two ends shutoff plug, when the pipe of various outer diameter is tested, need to carry out the center adjustment clamping device, ease of use is not good enough.

Summary of the invention

The utility model employing turning axle drives the heterodromous paired clamp of many groups level and comes radially clamping pipe, many groups with complexity clamp action by same drive shaft, make the clamping altitude measurement synchronous, not only simplify the structure, the number of tubes of once simultaneously pressure testing is increased, work efficiency promotes greatly, and the radially clamping that has solved different tube diameters and the axial centering problem of shutoff plug, to be driven by individual cylinder respectively for the moving plug of axial shutoff, improved the sealing effectiveness of shutoff when pipe is uneven in length; The pressure testing process realizes robotization control by Industrial Control Computer, pressure setting and dwell time standardization, working routine, the error of having avoided manual operation to produce.The utility model pipe underwater pressure tester, the pipe on its carriage 6 radially clamping device 12 drive up and down drive pin 26,25 fixing on the driving-discs 24 by the rotating driveshaft 22 that places the below and stir and produce counter motions with draw-in groove 34, two

clamping clamps

30 and 31 of 35 and form the action of unclamping and clamping.

The utility model pipe underwater pressure tester, the draw-in groove 34 on its

clamping device clamp

30,31,35 are for can be V-arrangement, U-shaped, semicircle, half elliptic, and the V-arrangement take angle α as 90 degree is as good especially.

The utility model pipe underwater pressure tester has gathering sill 28 on its

clamping device clamp

30,31, and the guide finger 29 corresponding with gathering sill 28 is housed on the clamp fixed mount 32.

The utility model pipe underwater pressure tester is equipped with lower drive pin 25 and upper drive pin 26 along the core symmetry on its clamping device clamp driving-disc 24, and has and mark closely the relative motion that screw 27 prevents driving-disc 24 and driving shaft 22.

The utility model pipe underwater pressure tester, pipe on its carriage 6 radially clamping device 12, radially the fixed

mount

32,15,40,45,47 of clamping driving mechanism 8 and the axial blocking component 9 of pipe and 13 is provided with the L shaped profile that the L shaped angle steel with carriage 6 matches, and can slide along the L shaped angle steel of carriage 6, can be fixed on the carriage 6 by marking closely screw 33,16,41,44.

The utility model pipe underwater pressure tester, its pipe radially clamping device 12, radially clamping driving mechanism 8 be except can along carriage 6 slide, sliding along driving shaft 22 simultaneously, and can be positioned driving shaft by marking closely screw 27 and 23.

Elaborate below in conjunction with accompanying drawing.

Description of drawings

Fig. 1 underwater pressure tester axonometric drawing

Fig. 2 pipe is clamping device and driving mechanism detail drawing thereof radially

Fig. 3 pipe is clamping clamp open configuration figure radially

Fig. 4 pipe radially retaining wedge plate holder is held constitutional diagram

The quiet plug component figure of the axial shutoff of Fig. 5 pipe

Plug component figure is moved in the axial shutoff of Fig. 6 pipe

Among the figure: the 1-control box; 2-pressure testing start button; 3-pressure testing pause button; The 4-pressure indicator; 5-carriage lift cylinder; The 6-carriage; The 7-pipe; 8-is the clamping driving mechanism radially; The quiet plug component of the axial shutoff of 9-; 10-tank support; The 11-tank; 12-is clamping device radially; Plug component is moved in the axial shutoff of 13-; 15-is the clamping bogie radially; 16-bogie gib screw; 17-drives the cylinder fixed pin; The 18-radial clamping drives cylinder; The 19-fork-shaped connects; 20-rocking handle bearing pin; The 21-rocking handle; The 22-driving shaft; The 23-rocking handle is marked closely screw; The 24-driving-disc; Drive pin under the 25-; The upper drive pin of 26-; The 27-driving-disc is marked closely screw; The 28-gathering sill; The 29-guide finger; The 30-A clamp; The 31-B clamp; 32-clamp fixed mount; 33-fixed mount screw; 34-B clamp draw-in groove; 35-A clamp draw-in groove; The quiet plug of 36-; The 37-packing washer; The 38-air-filled pore; The 39-inflating catheter; The quiet plug fixed head of 40-; 41-fixed head screw; 42-moves plug; The 43-sealing gasket; 44-moves plug frame gib screw; 45-moves the plug front apron; The moving plug of 46-drives cylinder; 47-moves the plug backboard.

Embodiment

Being constructed as follows of underwater pressure tester:

This underwater pressure tester (see figure 1) by control box 1, pressure indicator 4, lift cylinder 5, carriage 6, radially clamping driving mechanism 8, axially the quiet plug component 9 of shutoff, support 10, tank 11, axially the moving plug component 13 of shutoff forms; Control box 1 is provided with pressure testing start button 2, pressure testing pause button 3 and pressure indicator 4, is provided with Industrial Control Computer and control topworks etc. in the control box.

Radially clamping driving mechanism 8(sees Fig. 2) by radially clamping bogie 15, bogie gib screw 16, driving cylinder fixed pin 17, radial clamping driving cylinder 18, fork-shaped connection 19, rocking handle bearing pin 20, rocking handle 21, driving shaft 22, rocking handle are marked closely screw 23 and formed.

Radially clamping device 12(sees Fig. 2) A clamp 30 and B clamp 31, clamp fixed mount 32, the fixed mount screw 33 of marking closely screw 27, guide finger 29, tape guide groove 28 by driving-disc 24, lower drive pin 25, upper drive pin 26, driving-disc form; Have draw-in groove 35 and 34 on A clamp 30 and the B clamp 31, the draw-in groove shape can be V-arrangement, U-shaped, semicircle, half elliptic, but the V-shaped groove take subtended angle α=90 ° is as best.

Axially the quiet plug component 9(of shutoff sees Fig. 5) by the plug 36 that has center pit 38, be embedded in the packing washer 37 in plug 36 grooves, the compressed air interface 39 that communicates with center pit 38, plug fixed head 40, assembly gib screw 41 and form.

Axially the moving plug component 13(of shutoff sees Fig. 6) formed by moving plug 42, sealing gasket 43, trip bolt 44, front apron 45, driving cylinder 46, backboard 47.

The principle of work of underwater pressure tester is as follows:

When pipe (see figure 3) when radially retaining wedge integrated circuit board groove is in open configuration, pipe 7 that will pressure testing is loaded in the draw-in groove, and diagram is totally 6 arms, and the pipe number can increase and decrease as required, and 2 at least, 10 at most (by the draw-in groove restricted number); Press the pressure testing start button, Industrial Control Computer in the control box sends instruction, radial clamping cylinder 18 produces downward drive actions, drive 22 rotations of rocking handle 21 drive shafts, rotating shaft drives driving-disc 24, lower drive pin 25 on the driving-disc 24 and upper drive pin 26 produce rotation thereupon, and lower driving 25 pins stir that the A clamp moves right, upper drive pin is stirred the B clamp to left movement, and A clamp 30 and B clamp 31 draw-in grooves 35 and 34 close up from radial clamping pipe 7(sees Fig. 4); After the radial clamping action is finished, Industrial Control Computer sends the driving instruction to the driving cylinder 46 in the moving plug component (see figure 6) of the axial shutoff of pipe, axially moving plug 42 is finished with quiet plug 36 shutoff of the pipe 7 two ends mouths of pipe is moved, Industrial Control Computer sends inflation instruction in the pipe 7 to aeration control device subsequently, pressurized air is by interface 39, air-filled pore 38 is filled with pressurized air in pipe 7, Industrial Control Computer sends action command to the lift cylinder 5 of carriage 6 simultaneously, carriage lift cylinder 5 sinks down into carriage in the water of tank 11, until stop after flooding pipe about 7 to 50mm, be filled with pressurized air specific time of pressurize to the pressure of setting in the pipe 7, the pressure testing personnel can make an inspection tour the water surface this moment, whether there is bubble to emerge around checking pipe, if any then judging problematic pipe and rejected region according to bubble position, press pressure testing pause button 3 this moment, Industrial Control Computer sends the lifting instruction to carriage lift cylinder 5 emerges the pipe 7 on the carriage, and the action that produces the pressure release action and unclamp clamp device, can take out defective pipe this moment, and then enter the next round test.

Claims

1. pipe underwater pressure tester, it is characterized in that on the carriage (6) pipe radially clamping device (12) drive the upper fixing up and down drive pin (26,25) of driving-disc (24) by the rotating driveshaft (22) that places the below and stir two clamping clamps (30,31) of band draw-in groove (34,35) and produce counter motion and form the action of unclamping and clamping.

2. pipe underwater pressure tester according to claim 1 is characterized in that draw-in groove (34,35) on the clamping device clamp (30,31) for can be V-arrangement, U-shaped, semicircle, half elliptic, and the V-arrangements take angle α as 90 degree are as good especially.

3. pipe underwater pressure tester according to claim 1 is characterized in that having gathering sill (28) on the clamping device clamp (30,31), and the guide finger (29) corresponding with gathering sill (28) is housed on the clamp fixed mount (32).

4. pipe underwater pressure tester according to claim 1, it is characterized in that clamping device driving-disc (24) is upper is equipped with lower drive pin (25) and upper drive pin (26) along the core symmetry, and has and mark closely the relative motion that screw (27) prevents driving-disc (24) and driving shaft (22).

5. pipe underwater pressure tester, it is characterized in that on the carriage (6) pipe radially clamping device (12), radially the fixed mount (32,15,40,45,47) of clamping driving mechanism (8) and the axial blocking component of pipe (9,13) is provided with the L shaped profile that the L shaped angle steel with carriage (6) matches, and can slide along the L shaped angle steel of carriage (6), can be fixed on the carriage (6) by marking closely screw (33,16,41,44).

6. pipe underwater pressure tester according to claim 5, it is characterized in that pipe radially clamping device (12), radially clamping driving mechanism (8) is except can be along carriage (6) slides, can also slide along driving shaft (22) simultaneously, and can be positioned driving shaft by marking closely screw (27) and (23).