CN105562967A - Method for manufacturing leakage stopping clamp for punched bent pipe and use method for leakage stopping clamp - Google Patents

Abstract

The invention provides a method for manufacturing a leakage stopping clamp for a punched bent pipe and a use method for the leakage stopping clamp. The manufacturing method includes the steps that firstly, the punched bent pipe with the size and material conforming to those of a leakage bend is selected; secondly, blocking plates are welded to the two ends of the punched bent pipe; thirdly, the bent pipe is broken open in the radial direction along the connecting line of two points on the vertical plane of the bent pipe, and spot welding and fixing are conducted according to the original shape; fourthly, holes with the diameter of the leakage bend as a diameter are formed in the blocking plates at the two ends of the clamp with a saw opening as a center and the radius of the leakage bend as a radius; fifthly, lug plates are welded to the positions of four points on the two vertical planes of the two sides of the saw opening; and sixthly, nuts are welded to the two sides of the bent pipe, glue injecting holes are punched in the middle positions of the two sides, and the nuts are welded and fixed to the glue injecting holes.

Description

A kind of method and using method thereof manufacturing punching press bend pipe blocking clamper

Technical field

The present invention relates to a kind of method and the using method thereof that manufacture punching press bend pipe blocking clamper.

Background technology

In suitability for industrialized production, pipeline carries all kinds of raw materials for production to different production equipments, for device provides power, and output products.Although material and construction are selected in the requirement in strict accordance with pipe design, but the elbow of pipeline particularly some pipeline is in long-term production running, stand constantly washing away of medium, simultaneously by the acting in conjunction of temperature, pressure, elbow back is easily thinning gradually, final under the effect of internal pressure, leak.

The mode eliminating elbow leakage divides two classes: 1, pipeline is stopped using, and changes elbow.2, do not stop non-stop plugging.The minimizing of the productivity effect that parking maintenance will certainly bring, therefore in most cases, this type of leaks the mode adopting the non-stop plugging that do not stop.

Because leakage is that elbow is washed thinning causing, so in the construction of stopping a leak, the shutoff carrying out separately leakage point is inadequate.Because after only leakage point being eliminated, other thinning areas are under the souring of Cemented filling medium, can leak very soon again, so whole elbow must be strengthened, this just needs to carry out appropriate design and making to blocking clamper, to ensure that leakage position is in long-term production, can not leak again.

Fixture is important parts in non-stop plugging construction.During pressure sealing is in the past constructed, the processing method of fixture many employings sheet material welding of elbow, but there is appearance and size greatly in weld jig, and welding job amount is large, and intensity is low waits deficiency.Our method of steel plate overall processing that adopts makes fixture more at present: get two pieces of thickness and be added the steel plate being greater than and leaking elbow diameter, by the method for machining, steel plate processes the space be large enough to hold and leaked elbow, the elbow of leakage is wrapped in fixture, with bolt tight.

Adopt the method for steel plate overall processing to make fixture, although decrease the workload of welding, improve the intensity of fixture.But there is many shortcoming and defect: 1, fixture long processing time.Fixture processing will through operations such as line, cutting, planing, grooving, boring, tapping.2, fixture lifting surface area is large, yielding.3, fixture volume is large, and difficulty of construction is also large.4, fixture inner cavity space is comparatively large, and sealant consumption is many.5, rear jig overall weight of having constructed is large, causes leakage line extra load large, is unfavorable for pipeline long-play.

The present invention is exactly upper not enough for above jig Design and making, the design improvement project of research elbow shutoff fixture.

Summary of the invention

The object of this invention is to provide a kind of manufacture inner space rationally evenly, oeverall quality is light, sealant consumption is few fixture, it not only meets design of pressure vessels requirement, uniform force, intensity is high, tightness good; And processing capacity is few, structure is simple, low cost of manufacture.

For achieving the above object, adopt punched bend to make the technological means of fixture in the present invention, structure is simple.Make fixture will play following effect in pressure sealing construction: 1, to light containment role to leakage.2, sealant is held.3, system pressure and sealant extruding force is born.The design of fixture to meet the requirement in six: 1 contains leakage position.2, the volume of cavity and necessity will be had.3, sealant injection channel must be had.4, the intensity of carrying and enough rigidity will be had.5, the intensity of bolt.6, fixture and former hermetically-sealed construction will have minimum gap.

The present invention is a kind of method manufacturing punching press bend pipe blocking clamper, and it comprises:

Step (1) is chosen and the punching press bend pipe leaking corner dimension, material conforms to;

Plugging plate is welded on the two ends of punching press bend pipe by step (2);

Step (3) is with the some line of two on bend pipe perpendicular, and radial direction breaks bend pipe, and in statu quo spot welding is fixed;

Step (4), centered by saw kerf, to leak the radius of elbow for radius, on the closure plate of fixture two ends, is offered to leak the hole that elbow diameter is diameter;

4 the some positions of step (5) on two perpendiculars of saw kerf both sides, weld otic placode respectively;

Nut weld in bend pipe both sides, is beaten hole for injecting glue in the centre position of two halves, hole for injecting glue is welded and fixed nut by step (6).

Further, fixing solder joint is removed in step (5).

Present invention also offers a kind of using method of punching press bend pipe blocking clamper, it is characterized in that:

Fixture is fastened on leakage bend part by step (1);

Pipeline welding bead is just in time wrapped in fixture by step (2), prevents fixture to be subjected to displacement in injecting glue process;

Step (3) tightens set bolt;

Step (4) tightens rubber injecting valve, connection glue injection rifle on rubber injecting valve, injection sealant;

After step (5) fills sealant, close rubber injecting valve, remove colloid-injecting gun.

The leakage of channel bend, mostly occurs on the pipeline of below DN200.Therefore utilize the punched bend of R=D processing elbow clamp to have adequate condition.Median is got for convenience of calculation specifications.Construct for the channel bend pressure sealing of DN100, compare with steel plate and punched bend two kinds of method clamp for machining, the pressure sealing construction cost expense that can save.

1, material cost is saved: clamp for machining needs the steel plate of two pieces of 28 × 28 × 7cm, by calculating the weight that we can draw steel plate: 28 × 28 × 7 × 2 × 7.8=85612.8 gram.To be converted into kilogram, so to make jig and use the weight of steel plate to be 85.6 kilograms.4731 yuan per ton of the Q235A steel plate of 7 cm thick, makes expense 405 yuan needed for fixture steel plate.DN150 punched bend price 139 yuan.Cost saving 405 – 139=266 unit.

2, sealant cost is saved: steel plate fixture needs the internal capacity processed: 26 × 26 × 12=8112cm3.Leak elbow volume 5.42 × 3.14 × 23.55=2156.2cm3, fixture remaining space inside=fixture volume-leakage elbow volume=8112-2156.2=5955.8cm3.Sealant every kilogram fillable volume is 471cm3.Volume with the volume of remaining space in fixture can be filled divided by every kilogram of sealant: 5955.8 ÷ 471=12.64. draw sealant consumption 12.64 kilograms.

Adopt elbow clamp for machining, get DN150, the punched bend of R=D, the elbow radius of elbow radius and DN100, R=1.5D conforms to.Punched bend internal volume=7.52 × 3.14 × the 23.55=4159.5cm3 of DN150, R=D.Can filling sealing agent space in elbow clamp, equal elbow clamp internal volume and deduct the volume leaking elbow: 4159.5-2156.2=2003cm3.With deducting the volume that every kilogram of sealant can fill in filling sealing agent space: 2003 ÷ 471=4.25.Draw sealant consumption 4.25 kilograms.Finally, deduct with the sealant consumption of steel plate clamp for machining and draw with punched bend clamp for machining sealant consumption: adopt punched bend to make fixture ratio steel plate clamp for machining, complete a pressure sealing construction, sealant consumption 8.39 kilograms can be saved.Sealant every kilogram 484 yuan, therefore reduce expenses 4060.8 yuan.

3, cost of labor is saved: with steel plate clamp for machining soon 64 man-hours.Adopt punched bend to make fixture and only use 10 man-hours.Press monthly salary 4500 yuan per capita, monthly work and equal 172 hours in 21.5 days, 4500 ÷ 172=26.16 units.So use 64 × 26.16=1674.24 unit, show that making one helper spring fixture needs cost of labor 1674.24 yuan.With 10 × 26.16=261.6 unit, show that adopting punched bend to make fixture needs cost of labor 261.6 yuan.Two costs of labor are subtracted each other and are drawn: the processing completing a secondary elbow clamp can save cost of labor 1412.6 yuan.

Above three cost-saving additions are drawn: use punched bend to substitute steel plate, make a secondary elbow Pressurized plugging clamp, material can be saved, sealant, every cost such as artificial amount to 5739.4 yuan.The pressure sealing implementing elbow with annual constructs 15, adopts punched bend clamp for machining, estimates that year saves construction cost 86091 yuan.

In addition, the sealant spatial accommodation inside that tube bending jig provides is comparatively even, is conducive to sealant and flows rapidly between fixture and leakage elbow, improve sealant injection speed.And fixture interior accommodating space is comparatively even, makes sealant form the uniform hermetically-sealed construction of thickness in fixture.Sealant cures is consistent, and improves the intensity of sealant.Reach the effect of better sealing, more meet dynamic sealing technology requirement.See Fig. 4 A, Fig. 4 B and Fig. 4 C.

Accompanying drawing explanation

Fig. 1 is steel plate processing elbow clamp schematic diagram;

Fig. 2 A is the making step schematic diagram of the blocking clamper that punching press bend pipe makes;

Fig. 2 B is the making step schematic diagram of the blocking clamper that punching press bend pipe makes;

Fig. 3 is the fixture schematic diagram with punched bend processing;

Fig. 4 A is Plate Welding fixture schematic diagram, and wherein dash area shown in grid is sealant;

Fig. 4 B is steel plate overall processing fixture schematic diagram, and wherein dash area shown in grid is sealant;

Fig. 4 C is the schematic diagram of punching press tube bending jig, and wherein dash area shown in grid is sealant;

Fig. 5 is the practical application schematic diagram that punched bend makes fixture.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the invention will be further described.

Embodiment:

The blocking clamper that punching press bend pipe makes is made up of five parts: punching press bend pipe, otic placode, closure plate, nut, fastening bolt.Making step:

1, choose and the punching press bend pipe leaking corner dimension, material is consistent, as shown in Figure 1;

2, plugging plate is welded on the two ends of punching press bend pipe;

3, with the bend pipe 1 shown in Fig. 2 A, 2B, 2 lines, radial direction breaks bend pipe, and in statu quo spot welding is fixed.Centered by saw kerf, to leak the radius of elbow for radius, on the plugging plate of fixture two ends, offer to leak the hole that elbow diameter is diameter.In saw kerf both sides 1,2 and 3,4 points, weld otic placode respectively.Preferably remove fixing solder joint.(see Fig. 2 A and Fig. 2 B);

4, by nut weld in bend pipe both sides, beat hole for injecting glue in the centre position of two halves, hole for injecting glue be welded and fixed nut.See Fig. 3.

Bend pipe is the critical piece of fixture, provides sealant spatial accommodation, plays environmental sealing agent.Closure plate plays fixture and leaks the fixing of elbow two ends and sealing function.Otic placode plays a part to confine fixture.Nut plays fixing filling gun, provides the effect of injecting passage.

As shown in Fig. 4 A, Fig. 4 B and Fig. 4 C, be the schematic diagram of Plate Welding fixture, steel plate overall processing fixture, punching press tube bending jig respectively.

Punched bend makes the application that fixture leaks at conveying Propylene pipes elbow: Cemented filling pressure 0.25MPa, and the external diameter that actual measurement obtains leakage pipe and elbow is 57mm, R is 75mm.

1, choose the bend pipe of φ 89 × 4.5, make fixture;

2, every preparation and the site safety protected working of site operation is carried out;

3, fixture is fastened on leakage bend part, pipeline welding bead is just in time wrapped in fixture, prevent fixture to be subjected to displacement in injecting glue process.Then tighten set bolt, whether gauging fixture everywhere gap is evenly tight;

4, first rubber injecting valve is tightened, connection glue injection rifle on rubber injecting valve, injection sealant.After filling sealant, close rubber injecting valve, remove colloid-injecting gun.Complete Process of Leaking Stoppage.

As shown in Figure 5, be that punched bend makes fixture practical application at the schematic diagram leaking bend part.

The above, it is only exemplary embodiments of the present invention, not technical scope of the present invention is imposed any restrictions, every according to technical spirit of the present invention to any trickle amendment implementing above to make, equivalent variations and modification, all still belong within the scope of technical scheme of the present invention.

Claims (3)

1. manufacture a method for punching press bend pipe blocking clamper, it is characterized in that:

Step (1) is chosen and the punching press bend pipe leaking corner dimension, material conforms to;

Plugging plate is welded on the two ends of punching press bend pipe by step (2);

Step (3) is with the some line of two on bend pipe perpendicular, and radial direction breaks bend pipe, and in statu quo spot welding is fixed;

Step (4), centered by saw kerf, to leak the radius of elbow for radius, on the closure plate of fixture two ends, is offered to leak the hole that elbow diameter is diameter;

4 the some positions of step (5) on two perpendiculars of saw kerf both sides, weld otic placode respectively;

Nut weld in bend pipe both sides, is beaten hole for injecting glue in the centre position of two halves, hole for injecting glue is welded and fixed nut by step (6).

2. method according to claim 1, is characterized in that: remove fixing solder joint in step (5).

3. a using method for punching press bend pipe blocking clamper, is characterized in that:

Fixture is fastened on leakage bend part by step (1);

Pipeline welding bead is just in time wrapped in fixture by step (2), prevents fixture to be subjected to displacement in injecting glue process;

Step (3) tightens set bolt;

Step (4) tightens rubber injecting valve, connection glue injection rifle on rubber injecting valve, injection sealant;

After step (5) fills sealant, close rubber injecting valve, remove colloid-injecting gun.