Disclosure of utility model
In order to solve the problems, the utility model provides a simple pressure test tool for welded pipelines, which reduces pressure test procedures, shortens pressure test period, reduces pressure test cost, improves pressure test efficiency, and is particularly suitable for conveniently testing pressure of large-batch welded pipelines.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
The utility model discloses a simple pressure test tool for a welded pipeline, which comprises a first blocking plate and a second blocking plate which are oppositely arranged on a pressure test platform, wherein the inner sides of the first blocking plate and the second blocking plate are respectively provided with a first sealing gasket and a second sealing gasket, the first blocking plate or the second blocking plate is provided with a pressure test hole matched with a pressure test nozzle, and the outer sides of the first blocking plate and the second blocking plate are respectively provided with a pressing mechanism.
Further, the pressure test Kong Kaishe is located at a position of the first plugging plate near the outer edge.
Further, the compressing mechanism comprises two jacks, and piston rods of the two jacks are respectively arranged on the outer sides of the first blocking plate and the second blocking plate.
Further, the compressing mechanism comprises a jack and a baffle, and a piston rod and the baffle of the jack are respectively arranged on the outer sides of the first blocking plate and the second blocking plate.
Further, the pressure test platform is provided with a support, and the jack is installed on the support.
Further, the pressure test platform is provided with a boss, and the welding pipeline is arranged on the boss.
Further, the boss is provided with an arc-shaped groove, and the welding pipeline is arranged in the groove.
Further, the piston rod, the first blocking plate, the first sealing gasket, the second sealing gasket and the second blocking plate of the jack are coaxial.
Further, the outer diameter sizes of the first sealing gasket and the second sealing gasket are larger than the outer diameter sizes of the corresponding pipe orifices of the welded pipes, and the inner diameter sizes of the first sealing gasket and the second sealing gasket are smaller than the inner diameter sizes of the corresponding pipe orifices of the welded pipes.
Furthermore, the first blocking plate and the second blocking plate are both steel flange blocking plates.
The beneficial effects of the utility model are as follows: according to the simple pressure test tool for the welded pipeline, the two compacting machines are fixed on the pressure test platform, the welded pipeline is placed between the two compacting mechanisms, the first sealing gasket, the first blocking plate, the second sealing gasket and the second blocking plate are placed at two ends of the welded pipeline in sequence, the two compacting mechanisms are respectively adjusted, the two compacting mechanisms compact pipeline openings corresponding to the two ends of the first blocking plate and the second blocking plate and the two ends of the welded pipeline, the first blocking plate and the second blocking plate are blocked at the two ends of the welded pipeline to form a closed pressure test cavity, the two compacting mechanisms are adjusted to enable the pressure test cavity to meet pressure test conditions, the pressure test nozzle is connected into the pressure test hole, the welded pipeline is subjected to pressure test by introducing gas, after the pressure test is completed, the compacting mechanisms are adjusted to be separated from the first blocking plate and the second blocking plate, the welded pipeline is taken down, and then the pressure test of the next welded pipeline is carried out. The first closure plate, the first sealing gasket, the second closure plate and the pressing mechanism can be reused, so that the cost of the pressure testing tool is reduced, and the cost of pressure testing is reduced. The welding pipeline is simple and convenient, and the welding pipeline both ends need not to leave the processing allowance in the pressure testing frock, and the material cost is practiced thrift to the welding pipeline materials that significantly reduces, simultaneously compresses tightly with equipment, hold-down mechanism's mode, and it is more convenient to use, reduces a great deal of processes such as welding, detection, cutting, polishing and processing, further shortens the pressure testing time limit for a project, promotes pressure testing efficiency.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, based on the examples herein, which are within the scope of the utility model as defined by the claims, will be within the scope of the utility model as defined by the claims.
The utility model will be further described with reference to the drawings and examples.
As shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, this embodiment provides a simple pressure test fixture for welded pipes, including a first blocking plate 4 and a second blocking plate 8 which are relatively arranged on a pressure test platform 1, the inner sides of the first blocking plate 4 and the second blocking plate 8 are respectively provided with a first sealing gasket 5 and a second sealing gasket 7, the first blocking plate 4 or the second blocking plate 8 is provided with a pressure test hole 401 matched with a pressure test nozzle, and the outer sides of the first blocking plate 4 and the second blocking plate 8 are respectively provided with a pressing mechanism, and the pressing mechanism enables the first blocking plate 4 and the second blocking plate 8 to move relatively close to each other. Wherein the outer side is the back side of the inner side. The hold-down mechanism may be a jack or an air or hydraulic cylinder.
The welding pipeline simple pressure test tool provided by the embodiment can be used for testing the pressure of the welding pipeline according to the following steps:
S1, placing a welded pipeline 6 to be tested on a pressure test platform 1, wherein a first sealing gasket 5, a first blocking plate 4, a second sealing gasket 7 and a second blocking plate 8 are respectively arranged at two ends of the welded pipeline 6 in sequence, and a pressure test hole 401 matched with a pressure test nozzle is formed in the first blocking plate 4 or the second blocking plate 8;
S2, the pressure test platform 1 is provided with a pressing mechanism, and the pressing mechanism is adjusted to press the first blocking plate 4 and the second blocking plate 8 with two ends of the welding pipeline 6 respectively;
S3, inserting a pressure test nozzle into the pressure test hole 401, welding the pipeline 6 to form a sealed pressure test cavity, and performing pressure test through ventilation and pressurization of the pressure test nozzle;
S4, after the pressure test is finished, the pressing mechanism is loosened, and the first blocking plate 4, the first sealing gasket 5, the second sealing gasket 7 and the second blocking plate 8 are taken down from two ends of the welded pipeline 6.
Based on the simple and convenient pressure testing tool for the welded pipeline, two pressing machines are used for welding or bolting on the pressure testing platform 1, the welded pipeline 6 to be tested is placed between the two pressing mechanisms during pressure testing, the first sealing gasket 5 and the first sealing plate 4 are sequentially arranged at one end pipeline mouth of the welded pipeline 6 from outside to inside, the second sealing gasket 7 and the second sealing plate 8 are sequentially arranged at the other end pipeline mouth of the welded pipeline 6 from outside to inside, the two pressing mechanisms are respectively adjusted, the two pressing mechanisms respectively apply pressure to the first sealing plate 4 and the second sealing plate 8 and move towards each other with the first sealing plate 4 and the second sealing plate 8, the first sealing plate 4 and the second sealing plate 8 respectively press the first sealing gasket 5 and the second sealing gasket 7 against pipeline mouths corresponding to two ends of the welded pipeline 6, the first sealing plate 4 and the second sealing gasket 7 are respectively arranged at two ends of the welded pipeline, the first sealing plate 4, the first sealing plate 5, the welded pipeline 6 and the second sealing gasket 7 and the second sealing plate 8 are respectively arranged at the two ends of the sealed pipeline, the two pressing mechanisms are adjusted to enable the two pressing mechanisms to be respectively, the first sealing gasket 4 and the second sealing plate 8 to be connected to the pressure testing plate 6, the pressure testing efficiency is convenient, the pressure testing device is used for high pressure testing operation is shortened, the pressure testing efficiency is convenient, the pressure testing operation is convenient, and the pressure testing efficiency is easy, and the pressure testing device is convenient, and the pressure testing efficiency is convenient, and the pressure testing device is convenient, and the pressure testing and can be used for testing test and pressure test and can be used. The compressing mechanism, the first plugging plate 4, the first sealing gasket 5, the second sealing gasket 7 and the second plugging plate 8 can be reused, and the cost of the pressure testing tool is greatly reduced. Compared with the prior art for pressure test of the welded pipeline 6, the machining allowance of 7mm-8mm is reserved at the two ends of the welded pipeline 6, the allowance is not needed at the two ends of the welded pipeline 6 in the simple pressure test tool for the welded pipeline, the material consumption of the welded pipeline 6 is greatly reduced, the material cost is saved, meanwhile, the mode of pressing by using the assembly and pressing mechanism is more convenient to use, the procedures of welding, detecting, cutting, polishing, machining and the like are reduced, the pressure test period is further shortened, and the pressure test efficiency is improved. The simple pressure test fixture for the welded pipeline is suitable for the welded pipeline 6 of a straight pipe or a cone pipe, the pressure test range is wide, the sizes of the first blocking plate 4, the first sealing gasket 5, the second sealing gasket 7 and the second blocking plate 8 are selected according to the pipeline opening size of the welded pipeline 6, the distance between the two pressing mechanisms can be adjusted according to the length of the welded pipeline 6, and the pressure test fixture is corresponding to different pressure requirements of the welded pipeline 6, and is particularly suitable for low-pressure test in the range of 0MPa-10 MPa. For convenient assembly, the first sealing gasket 5 and the second sealing gasket 7 are attached or stuck to two ends of the welded pipeline 6. This simple and convenient pressure testing frock of welded tube way still can be to many welded tube ways 6 pressure testing simultaneously, if when two welded tube ways 6 pressure testing simultaneously, set up third closure plate 11 between adjacent welded tube way 6, third closure plate 11 has the through-hole to be used for ventilating, sets up sealing washer between third closure plate 11 and two adjacent welded tube way 6 pipeline mouth, further promotes pressure testing efficiency, is particularly useful for the convenient pressure testing of a large amount of welded tube ways 6.
Specifically, the pressure test hole 401 is formed at a position of the first plugging plate 4 near the outer edge.
The pressure test hole 401 is formed at the position of the first plugging plate 4 or the second plugging plate 8 close to the outer edge, for example, the pressure test hole 401 is formed at the position of the first plugging plate 4 close to the outer edge, so that the connection part of the pressing mechanism and the first plugging plate 4 and the second plugging plate 8 is avoided.
As an embodiment, the pressing mechanism comprises two jacks 3, and piston rods of the two jacks 3 are respectively arranged on the outer side wall of the first plugging plate 4 and the outer side wall of the second plugging plate 8.
The compressing mechanism comprises two jacks 3, the two jacks 3 are fixedly arranged on the pressure testing platform 1 through a bracket, piston rods of the two jacks 3 are oppositely arranged left and right, the structure of the jacks 3 is light, firm, flexible and reliable, the operation is convenient, a first sealing gasket 5 and a first blocking plate 4 are sequentially arranged at the left end of a pipeline opening of a welded pipeline 6 during pressure testing, a second sealing gasket 7 and a second blocking plate 8 are sequentially arranged at the right end of the pipeline opening of the welded pipeline 6, the left jack 3 is adjusted, piston rods of the jacks 3 are abutted against the first blocking plate 4, the right jack 3 is adjusted, the piston rods of the jacks 3 are abutted against the second blocking plate 8, the two jacks 3 respectively compress the first blocking plate 4 and the second blocking plate 8, the welded pipeline 6 is compressed between the first blocking plate 4 and the second blocking plate 8, a sealed pressure testing cavity is formed, the two jacks 3 are adjusted, the pressure testing condition is met, the pressure testing is very convenient, the jacks 3 are adjusted, the jacks 3 are separated from the first blocking plate 4 and the second blocking plate 8, the piston rods are separated from the second blocking plate 8, and the pipeline 6 is welded in a large batch, and the pressure testing is carried out, and the pressure testing is suitable for the large-scale welding of the pipeline 6. The piston rods of the two jacks 3 can be fixedly connected with the corresponding first plugging plate 4 and second plugging plate 8, such as welding, and the piston rods of the jacks 3 are staggered with the pressure test holes 401.
As another embodiment, the pressing mechanism includes a jack 3 and a baffle 10, and a piston rod of the jack 3 and the baffle 10 are respectively disposed on an outer side wall of the first plugging plate 4 and an outer side wall of the second plugging plate 8.
The compressing mechanism comprises a jack 3 and a baffle 10, the jack 3 is fixedly arranged on the pressure testing platform 1 through a support, a piston rod of the jack 3 is arranged opposite to the baffle 10 in a left-right direction, the piston rod of the jack 3 is perpendicular to the baffle 10, when pressure testing is performed, a first sealing gasket 5 and a first blocking plate 4 are sequentially arranged at the left end of a pipeline opening of a welded pipeline 6, a second sealing gasket 7 and a second blocking plate 8 are sequentially arranged at the right end of the pipeline opening of the welded pipeline 6, the jack 3 is pressed, the piston rod of the jack 3 props against the first blocking plate 4, the second blocking plate 8 is compressed on the baffle 10, the jack 3 and the baffle 10 compress the welded pipeline 6 between the first blocking plate 4 and the second blocking plate 8 to form a sealed pressure testing cavity, pressure testing conditions are met, only one jack 3 needs to be adjusted, the pressure testing is more convenient, the piston rod of the jack 3 is separated from the first blocking plate 4, the welded pipeline 6 is taken down, and then the pressure testing of the welded pipeline 6 is performed, and the pressure testing of the welded pipeline 6 is more suitable for large-scale welding of pipelines 6. Wherein the size of baffle 10 is greater than the size of second closure plate 8, and the whole of second closure plate 8 compresses tightly on baffle 10, and baffle 10 is more even for the reaction force of second closure plate 8, and second sealing washer 7 and second closure plate 8 compress tightly evenly, promotes the leakproofness, promotes the pressure testing accuracy, and baffle 10 has better support to first closure plate 4, first sealing washer 5, welded pipe 6, second sealing washer 7, second closure plate 8. The outer side of the baffle 10 may abut against a wall or the baffle 10 may be a stopper to prevent the baffle 10 from tilting.
Further, the pressure test platform 1 is provided with a support 2, and the jack 3 is mounted on the support 2.
The support 2 is used for installing the jack 3, and the jack 3 is fixed on the support 2, and the piston rod orientation of two jacks 3 sets up relatively, and support 2 and pressure testing platform 1, jack 3 can adopt bolt fastening or welded fastening.
Further, the pressure test platform 1 is provided with a boss 9, and the welding pipeline 6 is arranged on the boss 9.
The boss 9 is used for welding when pipeline 6 and first sealing washer 5, the butt joint of second sealing washer 7, lay the welded pipeline 6 of lifting, wherein pressure testing platform 1 sets up for the level, boss 9 and pressure testing platform 1 are parallel, the upper surface of boss 9 keeps the level, if pressure testing platform 1 is the pressure testing board, boss 9 is square piece, according to boss 9 and pressure testing platform 1 material, boss 9 bolt or welded fastening are on pressure testing platform 1, the height of boss 9 sets up according to the piston rod height of jack 3, like boss 9 height 10mm.
Further, the boss 9 is provided with an arc-shaped groove 901, and the welding pipe 6 is provided in the groove 901.
The groove 901 is used for placing the welding pipeline 6, so that the welding pipeline 6 can be prevented from easily rolling out from the boss 9, and the lifted welding pipeline 6 is more convenient to place when the welding pipeline 6 is in butt joint with the first sealing gasket 5 and the second sealing gasket 7.
Further, the piston rod of the jack 3, the first closure plate 4, the first sealing gasket 5, the second sealing gasket 7 and the second closure plate 8 are coaxial.
The piston rod of jack 3, first closure plate 4, first sealing washer 5, second sealing washer 7, 8 coaxial lines of second closure plate, jack 3 is to first closure plate 4, first sealing washer 5, second sealing washer 7, 8 applied pressure more even, and first sealing washer 5, second sealing washer 7 are the same with welding pipeline 6 compressive force, promote first sealing washer 5, second sealing washer 7 and weld pipeline 6 sealed effect, and welding pipeline 6's pressure test chamber has better seal, promotes welding pipeline 6 pressure test accuracy.
Further, the outer diameter sizes of the first sealing gasket 5 and the second sealing gasket 7 are larger than the outer diameter sizes of the corresponding pipe orifices of the welding pipes 6, and the inner diameter sizes of the first sealing gasket 5 and the second sealing gasket 7 are smaller than the inner diameter sizes of the corresponding pipe orifices of the welding pipes 6.
If the external diameter size of the first sealing gasket 5 and the second sealing gasket 7 is larger than the external diameter size 5mm of the corresponding pipe orifice of the welding pipeline 6, the internal diameter size of the first sealing gasket 5 and the second sealing gasket 7 is smaller than the internal diameter size 5mm of the corresponding pipe orifice of the welding pipeline 6, and when pressure test is performed, pipeline ports at two ends of the welding pipeline 6 respectively compress the corresponding first sealing gasket 5 and the corresponding second sealing gasket 7, so that the sealing effect of the pressure test cavity is ensured, the pressure test condition is met, and the pressure test is performed more accurately and rapidly.
Further, the first plugging plate 4 and the second plugging plate 8 are both steel flange plugging plates.
The first plugging plate 4 and the second plugging plate 8 can be made of common steel plates or flange plugging plates made of steel, for example, the first plugging plate 4 and the second plugging plate 8 are made of flange plugging plates made of steel, so that the sealing effect is better and more reliable, the strength is high, the compression resistance is high, the processing is easy, the service life is long, the replacement cost is reduced, and the first plugging plate 4 and the second plugging plate 8 are flange plugging plates.
The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model.