CN218674553U - End sealing and pressing hydrostatic testing machine for small-caliber steel pipe - Google Patents
End sealing and pressing hydrostatic testing machine for small-caliber steel pipe Download PDFInfo
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- CN218674553U CN218674553U CN202222604728.8U CN202222604728U CN218674553U CN 218674553 U CN218674553 U CN 218674553U CN 202222604728 U CN202222604728 U CN 202222604728U CN 218674553 U CN218674553 U CN 218674553U
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Abstract
The utility model discloses a small-bore steel pipe end seals presses hydrostatic test machine relates to the technical field of mechanical design and manufacturing, the utility model discloses aim at solving the problem that current steel pipe takes place plastic deformation easily when the experiment, the utility model discloses a pressure testing machine base, pressure testing machine base one end is hydraulic press shutoff end, corresponding push pipe hydro-cylinder is installed respectively at pressure testing machine base upside both ends, and is a pair of the relative one end of push pipe hydro-cylinder is equipped with the end sealing head who corresponds respectively. When a standard small-caliber steel pipe (6 meters in length) is subjected to end seal pipe jacking test, the maximum length of the steel pipe with the outer diameter of 20 meters is tested when the steel pipe is not bent according to the specified pressure intensity (calculated by 5-6 MPa), and after repeated tests, data is summarized, so that in practical application, the working efficiency is improved, the use cost is reduced, the working efficiency of the end seal is improved by 35% in terms of production efficiency, and the use cost of the end seal is reduced by 30% in terms of use cost.
Description
Technical Field
The utility model relates to a technical field of mechanical design and the technique of making specifically is a small-bore steel pipe end seal suppresses hydrostatic testing machine.
Background
When the small-caliber steel pipe with the standard length of 6 meters is subjected to hydrostatic test, the diameter seal pressure test is generally adopted, but when the hydrostatic test is carried out on the steel pipe in a diameter seal mode, the test speed is low, the efficiency is low, the use cost is high, the existing end seal sealing hydrostatic test machine is used for testing the small-caliber steel pipe, such as the steel pipes with the outer diameters of 20, 26 and 32, when the jacking pipe is sealed, the steel pipe is easy to bend, plastic deformation is even generated, the loss is caused, and meanwhile, the working efficiency is seriously influenced, so that the defects in the prior art are overcome.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, i.e. solve the problems of the background art, the utility model provides a small-caliber steel pipe end sealing and pressing hydrostatic testing machine, which comprises a pressure testing machine base, wherein one end of the pressure testing machine base is a hydraulic press sealing end, two ends of the upper side of the pressure testing machine base are respectively provided with a corresponding pipe-jacking cylinder, one end of the pair of pipe-jacking cylinders opposite to each other is respectively provided with a corresponding end sealing head, the other end of one pipe-jacking cylinder is communicated with the hydraulic press sealing end, the other end of the other pipe-jacking cylinder is communicated with the hydraulic press pressurizing end, the pressure testing machine base is provided with a group of lower clamping mechanisms which are uniformly distributed, the other end of the pressure testing machine base is provided with a steel pipe conveying mechanism, and the group of the lower clamping mechanisms and the steel pipe conveying mechanism are positioned between the pair of pipe-jacking cylinders;
the hydraulic press plugging mechanism is characterized in that an upper clamping frame cross beam is arranged on the upper portion of one end, opposite to the hydraulic press pressurizing end, of the hydraulic press plugging end, a group of upper clamping mechanisms which are evenly distributed are arranged on the upper clamping frame cross beam, and 5 groups of upper clamping mechanisms which are respectively in one-to-one correspondence with the upper clamping mechanisms and the lower clamping mechanisms are fixed on the upper clamping frame cross beam.
The utility model discloses a further set up to: the upper clamping mechanism is composed of a clamping cylinder and an upper frame tile, the clamping cylinder is fixed on the upper clamping frame beam through a bolt, and a cylinder rod of the clamping cylinder is fixedly connected with the upper frame tile.
The utility model discloses a further set up to: the number of the upper clamping mechanisms in one group is 5.
The utility model discloses a further set up to: the tested small-caliber steel pipe is a standard steel pipe with the length of 6 m.
The utility model discloses a further set up to: the diameter seal is designed by adopting the principle of self-sealing of a small gap of a large sealing ring, the pressure testing head is complex in structure, the sealing ring is large, the pressure rise is fast due to hydraulic requirements, a capacity energy storage pipe needs to be increased, and the sealing ring is troublesome to replace.
The utility model discloses a further set up to: the end seal is sealed by pipe end jacking pipes, the pressure testing head is simple in structure, hydraulic pressure can be slowly boosted, an energy storage tank does not need to be added to the hydraulic pressure, and the sealing ring is convenient to replace.
The utility model has the advantages of: in an end seal pipe jacking test of a standard small-caliber steel pipe (6 meters long), the maximum length of the steel pipe with the outer diameter 20 when the steel pipe is not bent is tested according to the specified pressure (calculated by 5-6 MPa), and after repeated tests, data is summarized (when the steel pipe with the caliber 20 bears the test pressure of 5 MPa, the minimum pressure of the end seal is ensured to be 350 kg for pressurization, the pipe jacking force can be controlled to be 350-450 kg, under the condition, the maximum length of the steel pipe with the end seal pipe which is not bent is 1.4 meters), in practical application, the working efficiency is improved, the use cost is reduced, the working efficiency of the end seal is improved by 35% in terms of production efficiency, and the use cost of the end seal is reduced by 30% in terms of use cost.
Drawings
Fig. 1 shows a front view of the present invention.
Fig. 2 shows a schematic view of the upper clamping mechanism 4 of the present invention.
The device comprises a reference numeral 1, a hydraulic press plugging end, 2, a pipe jacking oil cylinder, 3, an end sealing head, 4, an upper clamping mechanism, 4a, a clamping cylinder, 4b, an upper clamping tile, 5, a lower clamping mechanism, 6, a pressure test steel pipe, 7, an upper clamping frame cross beam, 8, a steel pipe conveying mechanism, 9 and a hydraulic press pressurizing end.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to fig. 1 to 2. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
The utility model provides a small-bore steel pipe end seal machine of suppressing water pressure, during the experiment, place pressure testing steel pipe 6 earlier at 8 upsides of steel pipe conveying mechanism, carry pressure testing steel pipe 6 to steel pipe pressure testing station through steel pipe conveying mechanism 8, when pressure testing steel pipe 6 pressure testing, end seal sealing head 3 is by 2 drives of push pipe hydro-cylinder, and clamping mechanism 5 cliies pressure testing steel pipe 6 under the 4 cooperations of last clamping mechanism.
Firstly, testing the pressure of the steel pipe 6 to be tested on the top pipe to ensure sealing, wherein the pressure of the steel pipe to be tested is 350-450 kg from 200 kg to 500 kg;
when the pressure of the jacking pipe is within the pressure range of 350-450 kg, the length value of the steel pipe 6 under pressure test, which cannot be bent, is 3 meters, 2.0 meters, 1.7 meters, 1.5 meters, 1.4 meters and the like from the standard length of the steel pipe 6 meter, and through repeated tests, the steel pipe under pressure test can be slightly bent when the length of the steel pipe is 1.6 meters, the steel pipe cannot be bent basically when the length of the steel pipe is 1.5 meters, and the safety coefficient is considered, so that 1.4 meters is determined to be selected as data that the steel pipe cannot be bent;
according to the test, the steel pipe 6 under pressure is determined to be fixed at the position where the interval is less than 1.4 meters, an upper clamping mechanism and a lower clamping mechanism are added, meanwhile, the width of the upper clamping tile and the width of the lower clamping tile are not less than 40mm, and the straightness of the upper clamping tile and the lower clamping tile meet the requirement of the straightness of the steel pipe (the requirement of the straightness and the flexibility of the steel pipe is not more than 1 mm/meter);
the clamping force is determined according to the lateral component force generated by the steel pipe under test 6 during pipe jacking, the lateral force generated by bending the steel pipe under test 6 is measured and calculated to be within 100 kilograms, therefore, a cylinder with the diameter of 125 millimeters is selected, the pressure generated by a rodless cavity of the cylinder is 480 kilograms according to the pressure of 0.4 MPa, a mode of clamping 3 steel pipes under test 6 by an upper clamping mechanism and a lower clamping mechanism is adopted, the average component force of each steel pipe under test 6 is 160 kilograms and is far greater than the 100 kilograms of the lateral component force of the steel pipe under test 6, and the problem that the steel pipe under test 6 is subjected to plastic deformation during the test is avoided.
The process design can obtain: when the pressure intensity of a pressure test steel pipe 6 with the caliber of 20 is 5 MPa, the minimum pressure of the end seal is ensured to be 350 kg for pressurization, the pipe jacking force can be controlled to be 350-450 kg, under the condition, the longest length of the steel pipe which can not be bent is ensured to be 1.4 m by the end seal pipe jacking, and the hydraulic pressure pressurizing test of the small-caliber steel pipe in the end seal mode is realized.
The working efficiency of the device is as follows:
calculated according to 8 hours of each day of the pressing test and a 6-station hydrostatic testing machine, 4800 steel pipes are pressed by adopting a radial seal pressing steel pipe for 8 hours, and 6500 steel pipes are pressed by adopting an end pressing steel pipe for 8 hours.
Calculated according to actual work for 20 hours every day, 6500x2.5-4800x2.5=4250 production capacity is increased every day, calculated according to 320 days every year, 4250x320=136000 production capacity is increased every year, the economic benefit of each pressing steel pipe is 3 yuan, and the economic benefit increased every year is 136000x3=408000 yuan.
The use cost of this device:
the unit price of the radial seal ring is 20 yuan, 12 radial seal rings are needed at 6 stations, and the seal rings need to be replaced twice in 8 hours, so the cost of the radial seal ring in 8 hours is 20x12x2=480 yuan.
The unit price of the end seal sealing ring is 5 yuan, 12 diameter seal sealing rings are needed at 6 stations, and the sealing ring needs to be replaced once in 8 hours, so the cost of the diameter seal sealing ring in 8 hours is 5x12x1=60 yuan.
Calculated according to actual work for 20 hours every day, the cost saving is 480x2.5-60x2.5=1050 yuan every day, 29400 yuan is saved in one month (calculated according to 28 days), and 336000 yuan is saved in one year (calculated according to 320 days).
In conclusion, the device achieves the purposes of improving the working efficiency and reducing the use cost through the data of the working efficiency and the use cost.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention, and particularly, various features shown in the various embodiments may be combined in any combination as long as there is no structural conflict. The present invention is not intended to be limited to the particular embodiments disclosed herein, but rather to include all embodiments falling within the scope of the appended claims.
In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, which indicate directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The terms "comprises," "comprising," or any other similar term are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus.
So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.
Claims (3)
1. The utility model provides a small-bore steel pipe end seal suppresses hydrostatic testing machine, includes the pressure testing machine base, its characterized in that: one end of the pressure testing machine base is a hydraulic press plugging end (1), two corresponding pipe jacking oil cylinders (2) are respectively installed at two ends of the upper side of the pressure testing machine base, corresponding end sealing heads (3) are respectively arranged at opposite ends of a pair of pipe jacking oil cylinders (2), the other end of one pipe jacking oil cylinder (2) is communicated with the hydraulic press plugging end (1), the other end of the other pipe jacking oil cylinder (2) is communicated with a hydraulic press boosting end (9), a group of uniformly distributed lower clamping mechanisms (5) is arranged on the pressure testing machine base, a steel pipe conveying mechanism (8) is arranged at the other end of the pressure testing machine base, and the group of lower clamping mechanisms (5) and the steel pipe conveying mechanism (8) are positioned between the pair of pipe jacking oil cylinders (2);
an upper clamping frame cross beam (7) is installed on the upper portion of one end, opposite to the hydraulic press plugging end (1) and the hydraulic press pressurizing end (9), of the hydraulic press plugging end, a group of upper clamping mechanisms (4) which are evenly distributed are installed on the upper clamping frame cross beam (7), and the upper clamping mechanisms (4) are fixed on the upper clamping frame cross beam (7) through 5 groups of upper clamping mechanisms (4) which are in one-to-one correspondence with the lower clamping mechanisms (5) from top to bottom.
2. The small-caliber steel pipe end sealing and pressing hydrostatic testing machine of claim 1, which is characterized in that: the upper clamping mechanism (4) is composed of a clamping cylinder (4 a) and an upper frame tile (4 b), the clamping cylinder (4 a) is fixed on the upper clamping frame cross beam (7) through a bolt, and a cylinder rod of the clamping cylinder (4 a) is fixedly connected with the upper frame tile (4 b).
3. The small-caliber steel pipe end sealing and pressing hydrostatic testing machine of claim 1, which is characterized in that: the number of the upper clamping mechanisms (4) in one group is 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222604728.8U CN218674553U (en) | 2022-09-30 | 2022-09-30 | End sealing and pressing hydrostatic testing machine for small-caliber steel pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222604728.8U CN218674553U (en) | 2022-09-30 | 2022-09-30 | End sealing and pressing hydrostatic testing machine for small-caliber steel pipe |
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| CN218674553U true CN218674553U (en) | 2023-03-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117907114A (en) * | 2024-03-19 | 2024-04-19 | 沈阳亚特重型装备制造有限公司 | High-efficient full-automatic multistation intelligent hydrostatic test machine |
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2022
- 2022-09-30 CN CN202222604728.8U patent/CN218674553U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117907114A (en) * | 2024-03-19 | 2024-04-19 | 沈阳亚特重型装备制造有限公司 | High-efficient full-automatic multistation intelligent hydrostatic test machine |
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