CN109870363B - Pressure testing method and system - Google Patents
Pressure testing method and system Download PDFInfo
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- CN109870363B CN109870363B CN201910101651.2A CN201910101651A CN109870363B CN 109870363 B CN109870363 B CN 109870363B CN 201910101651 A CN201910101651 A CN 201910101651A CN 109870363 B CN109870363 B CN 109870363B
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Abstract
The invention discloses a pressure test method and a pressure test system, which are characterized in that: at least 2 groups of test boards are arranged in the pressure test system, the test boards are connected with at least 2 branch transmission pipelines, and the branch transmission pipelines are provided with valves for adjusting gas inlet pressure so as to realize simultaneous pressure test of at least 2 test parts under different pressure values. The invention improves the testing efficiency, changes the previous single testing mode into the composite mode, further prolongs the service life of the parts of the testing system, reduces the labor consumption and the cost and has better economic benefit.
Description
Technical Field
The invention relates to the field of machinery, in particular to a pressure testing method and a pressure testing system.
Background
Along with the improvement of living standard of people, pipeline gas is more and more popular in city life, because the pressure of gas in the pipeline is great, and only need the gas of lower pressure when using in daily life, production, need carry out the pressure regulating to gas between pipeline and user, simultaneously, in order to ensure user's gas safety, still need regularly to survey the cutting off atmospheric pressure of pressure regulating box. Because the pressure regulating box needs to close the inlet and outlet valves of the pressure regulating box in the pressure cut-off test, the normal gas consumption of downstream users can be influenced due to the overlong test time.
The conventional testing device can only measure the cutoff pressure or the outlet pressure of one device at a time, and obviously, in the present of mass production, the testing mode is more complicated, and frequent disassembly and replacement easily causes the failure of equipment parts, so that a method for improving the testing efficiency and a pressure testing system are needed.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a pressure testing method having an advantage of improving efficiency of testing outlet pressure or cutoff pressure, and another object of the present invention is to provide a pressure testing system operating by applying the pressure testing method of the present invention.
The purpose of the invention is realized by the following technical scheme:
the pressure testing method is characterized in that at least 2 groups of testing tables are arranged in a pressure testing system, the testing tables are connected with at least 2 branch transmission pipelines, and the branch transmission pipelines are provided with valves for adjusting gas inlet pressure, so that at least 2 pressure testing pieces can simultaneously test pressure under different pressure values.
A pressure test system comprises a main pipeline, an air inlet pipeline group connected with the main pipeline in series, and at least 2 groups of test boards connected with the air inlet pipeline group in series, wherein the test boards are connected with a pressure test device I and a pressure test device II, the pressure test device I is communicated with the air inlet pipeline through a distribution and transmission pipeline group, the distribution and transmission pipeline group comprises at least 2 parallel distribution and transmission pipelines, the distribution and transmission pipelines are provided with valve groups with the function of adjusting air inlet pressure, and the pressure test device II is communicated with the air inlet pipeline group;
further, the test board comprises clamping devices and a bearing board for placing the test piece, wherein the clamping devices and the bearing board are sequentially arranged in the vertical direction, and the bearing board is provided with a channel for communicating the test piece with the pressure test device I and the pressure test device II;
further, the pressure testing device I comprises a pressure measuring device I, a flowmeter and a filter which are sequentially communicated;
further, the pressure testing device II comprises a regulating valve, a pressure relief part and a pressure measuring device II which are sequentially communicated;
further, the clamping device comprises a hydraulic cylinder and a supporting part which are fixedly connected, the supporting part is of a structure with an opening at the top end, and the opening end is provided with a limiting part;
further, the pressure relief part comprises a pressure relief nozzle and an air relief valve which are connected in series;
further, a valve body I and a valve body I are arranged at two ends of the regulating valve, the pressure measuring device I is a spring tube pressure measuring device, the pressure measuring device II is a U-shaped pressure gauge, and the flowmeter is an ultrasonic flowmeter or a turbine flowmeter;
further, a valve body III is arranged at the end part of the air inlet pipeline, and the bearing platform is connected with the pressure testing device II through a connecting pipeline;
further, the valve body I, the valve body II and the valve body III are ball valves.
The invention has the beneficial effects that:
the test efficiency is improved, the previous single test mode is changed into the composite mode, the service lives of the parts of the test system are further prolonged, the labor consumption is reduced, the cost is reduced, and better economic benefits are achieved.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof.
Drawings
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of a pressure testing device I;
FIG. 3 is a schematic structural view of a pressure testing device II;
FIG. 4 is a schematic view of a distribution pipeline I and a distribution pipeline II according to the present embodiment;
FIG. 5 is a schematic structural view of a clamping device according to the present embodiment;
fig. 6 is a schematic view of the main duct and the intake duct group in the present embodiment.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are illustrative of the invention only and are not limiting upon the scope of the invention.
The invention provides a pressure testing method, which is characterized in that at least 2 groups of test boards are arranged in a pressure testing system, the test boards are connected with at least 2 branch transmission pipelines, and the branch transmission pipelines are provided with valves for adjusting gas inlet pressure, so that the pressure testing of at least 2 test pressing pieces can be realized at the same time under the condition of different pressure values. The method has the advantages of improving the testing efficiency, changing the previous single testing mode into the composite mode and further prolonging the service life of the parts of the testing system.
The invention provides a pressure test system as shown in fig. 1 and 6, which comprises a main pipeline 8, an air inlet pipeline group 1 connected with the main pipeline 8 in series, and 3 test tables 5 connected with the air inlet pipeline group 1 in series, wherein the air inlet pipeline group 1 comprises an air inlet pipeline I11 and an air inlet pipeline II 12 which are connected in parallel, the test tables 5 are connected with a pressure test device I3 and a pressure test device II4, the pressure test device I3 is communicated with the air inlet pipeline I11 through a branch transmission pipeline group I2, the branch transmission pipeline group I2 comprises 2 branch transmission pipelines connected in parallel, the branch transmission pipelines are provided with valve groups for adjusting air inlet pressure, and the pressure test device II4 is communicated with the air inlet pipeline I1. As shown in fig. 4, in the present embodiment, the inlet pressure of stopcock I23 connected to the distribution line I21 was set to 0.2MPa, the inlet pressure of stopcock II24 connected to the distribution line II22 was set to 0.45MPa, and the inlet pressure of stopcock III26 connected to the inlet line II 12 was set to 0.05 MPa.
As a further improvement, the test bench 5 comprises a clamping device 51 and a receiving bench for placing the test pieces, which are sequentially arranged in the vertical direction, and the receiving bench is provided with a channel for communicating the test pieces with the pressure test device I3 and the pressure test device II 4. As shown in fig. 5, the clamping device 51 includes a hydraulic cylinder 511 and a support member 512 fixedly connected, the support member 512 has an open top end, and the open end is provided with a stopper. The test pressing piece is placed on the bearing table, the clamping device 51 is started, the hydraulic cylinder 511 drives the bearing table to push upwards, the test pressing piece is abutted against the limiting part of the supporting piece 521 to play a fixing role, and the bearing table is connected with the pressure testing device II4 through the connecting pipeline 6.
As a further improvement, as shown in fig. 2, the pressure testing device I3 includes a pressure measuring device I31, a flow meter 32, a filter 33 and a pressure measuring device II41 which are connected in sequence.
As a further improvement, as shown in fig. 3, the pressure testing device II4 includes a regulating valve 43, a relief portion, and a pressure measuring device II41, which are connected in series.
As a further improvement, the pressure relief part comprises a pressure relief nozzle 46 and an air release valve 42 which are connected in series, the pressure relief nozzle 46 is used for slow pressure relief and can control the pressure relief speed, and the air release valve 42 is used for manually opening the air release valve 42 when the air pressure is too high, so that the safety protection effect is achieved.
As a further improvement, a valve body I44 and a valve body II45 are arranged at two ends of the regulating valve, a pressure measuring device I31 is a spring tube pressure gauge, a pressure measuring device II41 is a U-shaped pressure gauge, and the flow meter 32 is an ultrasonic flow meter or a turbine flow meter. The valve body I44, the valve body II45 and the valve body III7 are ball valves, and the ball valves are in a fully open or fully closed state, so that the sealing performance is good.
As a further improvement, a valve body III7 is provided at the end of the intake duct 1.
The procedure for testing the outlet pressure of the test pressing piece is as follows:
stopcock I23 was opened, stopcock II24 and stopcock III26 were closed, and the degree of pressure measuring device II41(U gauge) was read.
The flow of testing the cutting pressure of the test pressing piece is as follows:
and closing the plug valves I23, II24 and III26, opening the valve body I44 slowly when the valve body II45 is in a normally open state, opening the regulating valve 43 slowly after the valve body I44 is fully opened until the cut-off valve of the pressure test piece is opened, and reading the reading of the pressure measuring device II 41.
The flow closing pressure test process comprises the following steps:
plug valve I23 was opened, plug valves II24, III26 and vent valve 42 were closed, the reading from measuring device II41 was recorded, this time as the test piece closing pressure, vent valve 42 was opened step by step, the change in flow was observed and the outlet pressure at each set of flow was recorded until the maximum flow of the test piece at that set of inlet pressures. And switching the intake pressure values, namely closing plug valves I23 and III26, opening plug valves II24 or closing plug valves I23 and II24, and opening plug valves III26, wherein the process is the same as the above.
The test pressure element of this embodiment may be tested for cutoff pressure, outlet pressure, and flow shutoff pressure simultaneously.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (4)
1. The utility model provides a pressure testing system, include the trunk line and with the admission line group that the trunk line established ties, its characterized in that: the device comprises an air inlet pipeline group, and is characterized by further comprising at least 2 groups of test boards which are connected with the air inlet pipeline group in series, wherein each test board is connected with a pressure test device I and a pressure test device II, each pressure test device I is communicated with the air inlet pipeline group through a distribution and transmission pipeline group I, each distribution and transmission pipeline group I comprises at least 2 distribution and transmission pipelines which are connected in parallel, each distribution and transmission pipeline is provided with a valve group with an air inlet pressure adjusting function, and each pressure test device II is communicated with the air inlet pipeline group; the test bench comprises clamping devices and a bearing bench for placing test pieces, which are sequentially arranged in the vertical direction, and the bearing bench is provided with a channel for communicating the test pieces with the pressure test device I and the pressure test device II; the pressure testing device I comprises a pressure measuring device I, a flowmeter and a filter which are sequentially communicated; the pressure testing device II comprises a regulating valve, a pressure relief part and a pressure measuring device II which are sequentially communicated; the clamping device comprises a hydraulic cylinder and a supporting part which are fixedly connected, the supporting part is of a structure with an opening at the top end, and the opening end is provided with a limiting part; the pressure relief part comprises a pressure relief nozzle and an air release valve which are connected in series; and the two ends of the regulating valve are provided with a valve body I and a valve body II.
2. The pressure testing system of claim 1, wherein: the two ends of the regulating valve are provided with a valve body I and a valve body II, the pressure measuring device I is a spring tube pressure gauge, the pressure measuring device II is a U-shaped pressure gauge, and the flowmeter is an ultrasonic flowmeter or a turbine flowmeter.
3. The pressure testing system according to claim 1 or 2, characterized in that: the end part of the main pipeline is provided with a valve body III, and the bearing platform is connected with the pressure testing device II through a connecting pipeline.
4. The pressure testing system of claim 3, wherein: the valve body I, the valve body II and the valve body III are ball valves.
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| CN201910101651.2A CN109870363B (en) | 2019-01-30 | 2019-01-30 | Pressure testing method and system |
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| CN201910101651.2A CN109870363B (en) | 2019-01-30 | 2019-01-30 | Pressure testing method and system |
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| CN109870363A CN109870363A (en) | 2019-06-11 |
| CN109870363B true CN109870363B (en) | 2021-10-29 |
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| CN109870363A (en) | 2019-06-11 |
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Address after: 402460 No.1 Avenue, Guangfu Industrial Park, Rongchang District, Chongqing Applicant after: Chongqing ruilibi Gas Equipment Co.,Ltd. Address before: 402460 No.1 Avenue, Guangfu Industrial Park, Rongchang District, Chongqing Applicant before: CHONGQING RUILIBI GAS EQUIPMENT Co.,Ltd. |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |