CN212228598U - Blasting test system applied to large-diameter steel pipe - Google Patents
Blasting test system applied to large-diameter steel pipe Download PDFInfo
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- CN212228598U CN212228598U CN202020897178.1U CN202020897178U CN212228598U CN 212228598 U CN212228598 U CN 212228598U CN 202020897178 U CN202020897178 U CN 202020897178U CN 212228598 U CN212228598 U CN 212228598U
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Abstract
A blasting test system applied to a large-diameter steel pipe comprises a pressurizing pipeline and a pressure relief pipeline which are connected with a tested steel pipe, wherein the input end of the pressurizing pipeline is connected with a medium supply source, a medium box, a servo motor three-plunger reciprocating pump and a pressurizing valve are sequentially arranged on the pressurizing pipeline along the direction that a medium flows into the tested steel pipe, and a pressure relief valve is arranged on the pressure relief pipeline; the device also comprises a pressure sensor, a strain gauge and a weighing sensor, wherein the pressure sensor and the strain gauge are respectively used for detecting the pressure in the steel pipe to be detected and the micro-area stress on the outer surface of the steel pipe to be detected after the steel pipe to be detected is subjected to internal pressure, and the weighing sensor is used for detecting the weight of media in the media box and the media box. The utility model discloses a servo motor three-plunger reciprocating pump pressurizes, has guaranteed the stability of pressurization in-process flow output, through the big or small adjustable flow who adjusts the servo motor rotational speed, provides accurate flow and pressure data, simple structure, convenient to use for the experiment.
Description
Technical Field
The utility model relates to a steel pipe test field, concretely relates to be applied to blasting test system of heavy-calibre steel pipe.
Background
When a large-diameter steel pipe is subjected to a burst test, the internal volume of the steel pipe is large (for example, the internal volume of the steel pipe with the internal diameter of 1 meter and the length of 10 meters is 7.85 m)3) In the process from pressurization to blasting, according to empirical values, the required input water amount is about 6% of the internal volume of the steel pipe (namely, the input water amount is about 471L for a steel pipe with an inner diameter of 1 meter and a length of 10 meters), and the input amount is large. The experimental analysis needs to measure the water inflow during the pressurization to blasting process, draw a curve, and then analyze according to the curve change condition to obtain the yield pressure.
The blasting test machine in the prior art adopts a pneumatic pump for pressurization, and has the following defects: a. the pneumatic pump is single plunger pump, and when the plunger gos forward, the pneumatic pump exports in pump chamber liquid to the sample, and when the plunger retreated, the pneumatic pump sucked the liquid entering pump chamber in the water tank, and at whole action in-process, the pneumatic pump only half the process can export liquid, and half needs suction liquid to the output flow is discontinuous. Even if a plurality of pneumatic pumps are adopted to act in a combined manner, the action cooperativity of the plurality of pumps is difficult to ensure, so that the output flow of the plurality of pneumatic pumps at different moments is inconsistent, and the flow fluctuates in the pressurizing process; b. the action speed of the plunger of the pneumatic pump is relatively slow, the pneumatic pump in the prior art acts for about 60-100 times per minute, and the diameter of the plunger of the pneumatic pump is small, so that the output flow is limited, when the pneumatic pump needs to output large flow, a plurality of pumps are needed to be combined for use, and the cost is high; c. pneumatic pumps have a limited life and high maintenance costs when they are operated continuously at a relatively high speed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the above-mentioned problem that prior art exists, provide a be applied to blasting test system of heavy-calibre steel pipe.
In order to achieve the purpose, the utility model provides a blasting test system applied to a large-diameter steel pipe, which comprises a pressurizing pipeline and a pressure relief pipeline, wherein the pressurizing pipeline and the pressure relief pipeline are connected with a tested steel pipe;
the device is characterized by further comprising a pressure sensor, a strain gauge and a weighing sensor, wherein the pressure sensor and the strain gauge are respectively used for detecting the pressure in the steel pipe to be detected and the micro-area stress on the outer surface of the steel pipe to be detected after the steel pipe to be detected is subjected to internal pressure, and the weighing sensor is used for detecting the weight of media in the media box and the media box.
As a further preferable technical scheme of the utility model, the strain gauge is pasted on the outer surface of the measured steel pipe; the pressure measuring interface is arranged on the steel pipe to be measured, the pressure measuring hose is connected to the pressure measuring interface, and the pressure sensor is arranged at the end part of the pressure measuring hose.
As a further preferred technical scheme of the utility model, still be equipped with the pressurization interface on the surveyed steel pipe, the output of pressurization pipeline is connected on the pressurization interface, and the pressure measurement interface is kept away from to the pressurization interface.
As a further preferred technical scheme of the utility model, the medium box passes through weighing sensor and hangs on the support frame.
As a further preferable aspect of the present invention, a filter is provided on the pressure line on the input side of the medium tank.
As a further preferred technical scheme of the utility model, be equipped with the input valve between filter and the medium case, be equipped with the output valve between medium case and the three plunger reciprocating pumps of servo motor.
As a further preferred technical scheme of the utility model, the input of pressure release pipeline passes through the tee junction and on the pressurization pipeline between pressurization valve and the steel pipe of being surveyed.
As a further preferred technical scheme of the utility model, blasting test system still includes the computer, and the computer is connected respectively with pressure sensor, foil gage, weighing sensor to and the power pack of the three plunger reciprocating pump of servo motor.
The utility model discloses a be applied to blasting test system of heavy-calibre steel pipe through adopting above-mentioned technical scheme, can reach following beneficial effect:
1) the servo motor three-plunger reciprocating pump is adopted for pressurization, so that the stability of flow output in the pressurization process is ensured, the flow can be adjusted by adjusting the rotating speed of the servo motor, and accurate flow and pressure data are provided for the test;
2) the servo electric three-plunger reciprocating pump is adopted for pressurization, the output flow is large, the test time can be greatly saved within the range of specified pressurization speed, and the labor intensity of workers is reduced;
3) the utility model discloses simple structure, convenient to use, and the blasting test reliability of being applied to heavy-calibre steel pipe is high.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the structure diagram of an example provided by the blasting test system applied to the large-diameter steel pipe of the utility model.
In the figure: 1. the device comprises a filter, 2, an input valve, 3, a medium box, 4, a weighing sensor, 5, an output valve, 6, a servo electric three-plunger reciprocating pump, 7, a pressure valve, 8, a pressure release valve, 9, a pressure pipeline, 10, a measured steel pipe, 11, a strain gauge, 12, a pressure measuring hose, 13 and a pressure sensor.
The purpose of the present invention is to provide a novel and improved method and apparatus for operating a computer.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description. In the preferred embodiments, the terms "upper", "lower", "left", "right", "middle" and "a" are used for the sake of clarity only, and are not intended to limit the scope of the invention, its relative relationship between the terms and their derivatives, and the scope of the invention should be understood as being limited by the claims.
As shown in figure 1, the utility model provides a be applied to blasting test system of heavy-calibre steel pipe, include the pressurization pipeline 9 and the pressure release pipeline of being connected with the steel pipe 10 of being surveyed.
The input end of the pressurizing pipeline 9 is connected with a medium supply source, a medium box 3, a servo motor three-plunger reciprocating pump 6 and a pressurizing valve 7 are sequentially arranged on the pressurizing pipeline 9 along the direction that the medium flows into the tested steel pipe 10, and a pressure release valve 8 is arranged on the pressure release pipeline.
The blasting test system further comprises a pressure sensor 13, a strain gauge 11, a weighing sensor 4 and a computer respectively connected with the pressure sensor 13, the strain gauge 11, the weighing sensor 4 and a power unit of a servo motor three-plunger reciprocating pump, wherein the pressure sensor 13 and the strain gauge 11 are respectively used for detecting the pressure in the steel pipe to be tested 10 and the micro-area stress on the outer surface of the steel pipe to be tested after the steel pipe is subjected to internal pressure, and the weighing sensor 4 is used for detecting the weight of media in the media box 3 and the media box 3.
In this embodiment, the medium is water, and the medium supply source may be a tap water pipe. Of course, other types of media can be used according to actual experimental requirements, and no examples are given here.
The utility model discloses a be applied to blasting test system of heavy-calibre steel pipe, the power pack of the three plunger reciprocating pump of servo motor is servo motor, and servo control has the advantage that the precision is high, has guaranteed the stability of pressurization in-process flow output promptly. In the test, the servo motor drives the three-plunger reciprocating pump to pressurize until the tested steel pipe 10 is exploded to lose efficacy, and the pressurizing water inflow can be controlled by adjusting the rotating speed of the servo motor so as to meet the different water inflow requirements of samples with different specifications.
The utility model discloses a be applied to blasting test system of heavy-calibre steel pipe, the inflow of medium case 3 can be recorded by weighing sensor 4, and in the pressurization process, the weight change through weighing sensor 4 turns into the pressurization inflow for the accessible computer draws the inflow-time curve in the pressurization process.
The utility model discloses a be applied to blasting test system of heavy-calibre steel pipe, the pressurization pressure in the steel pipe 10 of being surveyed is measured through pressure sensor 13 to accessible computer draws the pressure-time curve among the pressurization process.
The utility model discloses a be applied to blasting test system of heavy-calibre steel pipe, the micro-zone of surveyed steel pipe 10 surface is met an emergency and is measured through foil gage 11 to the accessible computer draws the strain-time curve in the pressurization process.
The utility model discloses a be applied to blasting test system of heavy-calibre steel pipe carries out experimentation process control and data acquisition, storage and processing by the computer, but integrated processing inflow, pressure, strain signal draw pressure-inflow curve, pressure-strain curve, strain-inflow curve to can be according to the test result, according to regulation format generation statement.
In specific implementation, the strain gauge 11 is adhered to the outer surface of the steel pipe 10 to be tested, a pressure measuring connector is arranged on the steel pipe 10 to be tested, a pressure measuring hose 12 is connected to the pressure measuring connector, and the pressure sensor 13 is arranged at the end of the pressure measuring hose 12. The steel pipe 10 to be tested is also provided with a pressurizing connector, the output end of the pressurizing pipeline 9 is connected to the pressurizing connector, and the pressurizing connector is far away from the pressure testing connector, so that the stability of pressure testing is ensured.
Preferably, the media box 3 is suspended from the support frame by a load cell 4.
In one specific implementation, a filter 1 is arranged on the pressurizing pipeline 9 at the input side of the medium tank 3, an input valve 2 is arranged between the filter 1 and the medium tank 3, and an output valve 5 is arranged between the medium tank 3 and the servo motor three-plunger reciprocating pump, so that the inlet and outlet of the medium in the medium tank 3 can be controlled conveniently, and the use is convenient.
In another embodiment, the input end of the pressure relief pipeline is connected to the pressurizing pipeline 9 between the pressurizing valve 7 and the steel pipe 10 to be tested through a tee joint, so that the assembly is convenient.
The utility model discloses a servo electronic three plunger reciprocating pump 6 pressurizes, has three plungers because of servo electronic three plunger reciprocating pump 6, and three plungers pass through crankshaft drive, and bent axle triaxial center is according to 120 distributions, inhales the chamber volume when the pump is rotatory to arbitrary position, arranges the chamber volume and keeps unanimous, under the invariable condition of servo motor rotational speed, the output flow of pump at arbitrary moment equals to the stability of flow output in the experimentation has been guaranteed. The maximum rotating speed of the servo electric three-plunger reciprocating pump 6 can reach 1000r/min, which is far greater than 100 times/min of a pneumatic pump, namely the output flow is larger.
According to the blasting test system applied to the large-diameter steel pipe, the servo motor three-plunger reciprocating pump is adopted for pressurization, so that the stability of flow output in the pressurization process is ensured, the flow can be adjusted by adjusting the rotating speed of the servo motor, and accurate flow and pressure data are provided for the test; the servo electric three-plunger reciprocating pump 6 is adopted for pressurization, the output flow is large, and the test time can be greatly saved and the labor intensity of workers can be reduced within the specified range of the boosting rate; in addition, this embodiment simple structure, convenient to use, and the blasting test reliability of being applied to heavy-calibre steel pipe is high.
Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are merely examples and that many changes and modifications may be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims.
Claims (8)
1. A blasting test system applied to a large-diameter steel pipe is characterized by comprising a pressurizing pipeline and a pressure relief pipeline which are connected with a tested steel pipe, wherein the input end of the pressurizing pipeline is connected with a medium supply source, a medium box, a servo motor three-plunger reciprocating pump and a pressurizing valve are sequentially arranged on the pressurizing pipeline along the direction that a medium flows into the tested steel pipe, and a pressure relief valve is arranged on the pressure relief pipeline; the blasting test system further comprises a pressure sensor, a strain gauge and a weighing sensor, wherein the pressure sensor and the strain gauge are respectively used for detecting the pressure in the steel pipe to be tested and the micro-area stress on the outer surface of the steel pipe to be tested after the steel pipe is subjected to internal pressure, and the weighing sensor is used for detecting the weight of media in the media box and the media box.
2. The system of claim 1, wherein the strain gauge is adhered to an outer surface of the steel pipe, the steel pipe is provided with a pressure measuring port, the pressure measuring port is connected with a pressure measuring hose, and the pressure sensor is disposed at an end of the pressure measuring hose.
3. The blasting test system applied to the large-diameter steel pipe according to claim 2, wherein a pressurizing connector is further arranged on the steel pipe to be tested, the output end of the pressurizing pipeline is connected to the pressurizing connector, and the pressurizing connector is far away from the pressure measuring connector.
4. The blasting test system applied to the large-diameter steel pipe according to claim 1, wherein the medium box is hung on the support frame through a weighing sensor.
5. The burst test system applied to the large-diameter steel pipe according to claim 1, wherein a filter is arranged on the pressurizing pipeline at the input side of the medium box.
6. The system for testing the blasting of large-diameter steel pipes according to claim 5, wherein an input valve is arranged between the filter and the medium tank, and an output valve is arranged between the medium tank and the servo motor three-plunger reciprocating pump.
7. The system for testing the blasting of the large-diameter steel pipe according to claim 1, wherein the input end of the pressure relief pipeline is connected to the pressurization pipeline between the pressurization valve and the steel pipe to be tested through a tee.
8. The system for testing the explosion of a large-diameter steel pipe according to any one of claims 1 to 7, wherein the system for testing the explosion further comprises a computer, and the computer is connected with the pressure sensor, the strain gauge, the weighing sensor and the power unit of the servo motor three-plunger reciprocating pump respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020897178.1U CN212228598U (en) | 2020-05-25 | 2020-05-25 | Blasting test system applied to large-diameter steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020897178.1U CN212228598U (en) | 2020-05-25 | 2020-05-25 | Blasting test system applied to large-diameter steel pipe |
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| Publication Number | Publication Date |
|---|---|
| CN212228598U true CN212228598U (en) | 2020-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020897178.1U Active CN212228598U (en) | 2020-05-25 | 2020-05-25 | Blasting test system applied to large-diameter steel pipe |
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| CN (1) | CN212228598U (en) |
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2020
- 2020-05-25 CN CN202020897178.1U patent/CN212228598U/en active Active
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