CN111397844A - Slip casting pipeline on-way pressure loss test system - Google Patents
Slip casting pipeline on-way pressure loss test system Download PDFInfo
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- CN111397844A CN111397844A CN202010333127.0A CN202010333127A CN111397844A CN 111397844 A CN111397844 A CN 111397844A CN 202010333127 A CN202010333127 A CN 202010333127A CN 111397844 A CN111397844 A CN 111397844A
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- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
Abstract
The invention discloses an on-way pressure loss testing system for a grouting pipeline, which comprises: a first test loop for detecting an on-way pressure loss of the cement slurry; a second test circuit for detecting an on-way pressure loss of the water glass; the first slurry branch is connected with a test outlet of the first test loop and provided with a first switch valve; the first water glass branch is connected with a test outlet of the second test loop and is provided with a second switch valve; a third test circuit for detecting the on-way pressure loss of the mixed liquid of grout and sodium silicate, the test import of third test circuit is equipped with the blender, and first mud branch road and first sodium silicate branch road correspond with two entrances of blender respectively and link to each other, and the test export of third test circuit links to each other with the containing box. The on-way pressure loss testing system for the grouting pipeline can comprehensively test on-way pressure loss of cement paste, water glass and mixed liquid of the cement paste and the water glass, and is high in testing efficiency.
Description
Technical Field
The invention relates to the technical field of detection equipment for a grouting pipeline of a shield tunneling machine, in particular to a system for testing the on-way pressure loss of the grouting pipeline.
Background
The shield machine is the main tunneling equipment for tunnel construction, and in the construction process of the shield machine, after a duct piece is separated from the shield tail of the shield machine, a certain gap exists between the duct piece and the surrounding soil layer, so that the structure of the duct piece ring is stabilized for controlling ground settlement and deformation of the surrounding soil body, and cement slurry with a specific proportion needs to be injected into the gap of the shield tail of the shield machine.
Because cement thick liquid proportion is great, along journey loss of pressure is comparatively obvious in the pipeline, in addition there is cement hydration effect in grout, when the pressure of cement thick liquid in the pipeline is low excessively, the velocity of flow is too slow, very easily take place to solidify, and then block up the pipeline, cause the influence to the construction progress, consequently, in order to ensure the shield constructs the machine in the work progress, the smooth and easy nature of its slip casting pipeline, need make grout have reasonable pressure in the pipeline, this along journey loss of pressure that just needs accurate control cement thick liquid in the pipeline, in order to avoid the frequent condition of blockking up of pipeline to take place.
In the prior art, a conventional hydrodynamics experiment table is usually adopted to test the on-way pressure loss of cement slurry, however, sometimes in order to accelerate the solidification speed of injected cement slurry, a water glass solution with a specific proportion is required to be mixed in the cement slurry for double-liquid grouting, after the double liquids are mixed, the solidification speed of the cement slurry is faster, the on-way pressure loss of the cement slurry will change, in the prior art, the conventional hydrodynamics experiment table can only be adopted to respectively test the on-way pressure loss of the cement slurry, the water glass and the double liquids mixed according to a certain proportion, and the experiment table specially aiming at the on-way pressure loss test of a grouting pipeline of a shield machine is not provided, the test is incomplete, and the test efficiency is low.
Therefore, a problem to be solved by those skilled in the art is how to provide a system for testing the on-way pressure loss of a grouting pipeline, which can comprehensively test the on-way pressure loss of cement slurry, water glass and a mixed liquid of the cement slurry and the water glass.
Disclosure of Invention
In view of this, the present invention provides a system for testing an on-way pressure loss of a grouting pipeline, which can comprehensively test the on-way pressure loss of cement paste, water glass and a mixed liquid of cement paste and water glass, and has high testing efficiency.
In order to achieve the above purpose, the invention provides the following technical scheme:
an in-situ pressure loss testing system for a grouting pipeline, comprising:
a first test loop for detecting an on-way pressure loss of the cement slurry;
a second test circuit for detecting an on-way pressure loss of the water glass;
the first slurry branch is connected with a test outlet of the first test loop and provided with a first switch valve for controlling the on-off of the first slurry branch;
the first water glass branch is connected with a test outlet of the second test loop and provided with a second switch valve for controlling the on-off of the first water glass branch;
the third testing loop is used for detecting the on-way pressure loss of the mixed liquid of the cement slurry and the water glass, a mixer is arranged at a testing inlet of the third testing loop, the first slurry branch and the first water glass branch are correspondingly connected with two inlets of the mixer respectively, and a testing outlet of the third testing loop is connected with the containing box.
Preferably, first test loop with second test loop all includes two at least first test unit, every first test unit all includes first inlet control valve, first outlet control valve and locates first inlet control valve with between the first outlet control valve and the elbow, first hard tube and the first hose that establish ties and set up, the both ends of elbow the both ends of the length section of predetermineeing of first hard tube and the both ends of the length section of predetermineeing of first hose all are equipped with the first pressure measuring point that is used for detecting pressure.
Preferably, the third test loop includes two at least second test unit, every the second test unit all includes second import control valve, second export control valve and locates the second import control valve with between the second export control valve and the second hard tube and the second hose that establish ties and set up, the both ends of the length section of predetermineeing of second hard tube with the both ends of the length section of predetermineeing of second hose all are equipped with the second pressure measuring point that is used for detecting pressure.
Preferably, the first pressure measurement point and the second pressure measurement point each include:
the pressure sensor is used for feeding back a pressure value in real time;
and the pressure gauge is used for displaying the pressure value.
Preferably, the test device further comprises a high-pressure flushing circuit for cleaning the inner wall of the pipeline of the first test circuit and the third test circuit, wherein the high-pressure flushing circuit comprises:
the first cleaning branch is connected between the outlet of a washing water pump of the high-pressure washing loop and the inlet of a grouting pump of the first testing loop, and is provided with a third switch valve;
and a second cleaning branch connected between the outlet of the washing water pump and the first slurry branch, wherein the second cleaning branch is provided with a fourth switch valve.
Preferably, the first test circuit comprises a second mud branch, one end of the second mud branch is connected with the test outlet of the first test circuit, the other end of the second mud branch is connected with the cement slurry tank of the first test circuit, and the second mud branch is provided with a fifth switch valve.
Preferably, the high-pressure flushing loop comprises a third cleaning branch, one end of the third cleaning branch is connected with the second slurry branch, the other end of the third cleaning branch is connected with the containing box, and the third cleaning branch is provided with a sixth switch valve; and a seventh switch valve is arranged between the second slurry branch and the cement slurry tank from the connection point of the second slurry branch and the third cleaning branch.
Preferably, the second test circuit comprises a second water glass branch, one end of the second water glass branch is connected with a test outlet of the second test circuit, the other end of the second water glass branch is connected with a water glass tank of the second test circuit, and the second water glass branch is provided with an eighth switch valve.
Preferably, the first switch valve, the second switch valve, the third switch valve, the fourth switch valve, the fifth switch valve, the sixth switch valve, the seventh switch valve and the eighth switch valve are all automatic control valves, so that the opening and closing of the automatic control valves are automatically controlled by a control device of the slip casting pipeline on-way pressure loss testing system.
Preferably, the first test circuit, the second test circuit, the first slurry branch and the first water glass branch are all provided with flow meters.
According to the grouting pipeline on-way pressure loss testing system provided by the invention, during testing, the on-way pressure loss of cement paste can be tested by adopting the first testing loop, the on-way pressure loss of water glass can be tested by adopting the second testing loop, and the on-way pressure loss of a mixed solution of cement paste and water glass can be tested by adopting the third testing loop, namely, the grouting pipeline on-way pressure loss testing system can comprehensively test the on-way pressure loss of the cement paste, the water glass and the mixed solution of the cement paste and the water glass, and the testing efficiency is high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of an in-situ pressure loss testing system for a grouting pipeline provided by the present invention;
FIG. 2 is a schematic structural diagram of a first testing unit in the on-way pressure loss testing system for the grouting pipeline shown in FIG. 1;
fig. 3 is a schematic structural diagram of a second testing unit in the on-way pressure loss testing system of the grouting pipeline shown in fig. 1.
The reference numerals in fig. 1 to 3 are as follows:
11 is a cement slurry tank, 12 is a ninth switch valve, 13 is a grouting pump, 14 is a second slurry branch, 141 is a fifth switch valve, 142 is a seventh switch valve, 15 is a first safety valve, 21 is a water glass tank, 22 is a tenth switch valve, 23 is a water glass liquid pump, 24 is a second water glass branch, 241 is an eighth switch valve, 25 is a second safety valve, 31 is a first slurry branch, 311 is a first switch valve, 32 is a first water glass branch, 321 is a second switch valve, 33 is a mixer, 4 is a storage box, 5 is a first test unit, 51 is a first inlet control valve, 52 is a first outlet control valve, 53 is an elbow, 54 is a first hard pipe, 55 is a first hose, 56 is a first pressure measuring point, 6 is a second test unit, 61 is a second inlet control valve, 62 is a second outlet control valve, 63 is a second hard pipe, 64 is a second hose, 65 is a second pressure measuring point, 71 is a flushing water pump, 72 is a first cleaning branch, 721 is a third switch valve, 73 is a second cleaning branch, 731 is a fourth switch valve, 74 is a third cleaning branch, 741 is a sixth switch valve, 75 is a flushing water tank, 76 is an eleventh switch valve, 77 is a third safety valve, 81 is a pressure gauge, 82 is a pressure sensor, and 9 is a flow meter.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The core of the invention is to provide a slip casting pipeline on-way pressure loss testing system, which can comprehensively test on-way pressure loss of cement paste, water glass and mixed liquid of the cement paste and the water glass, and has high testing efficiency.
Referring to fig. 1-3, fig. 1 is a schematic structural diagram of an embodiment of an in-situ pressure loss testing system for a grouting pipeline according to the present invention; FIG. 2 is a schematic structural diagram of a first testing unit in the on-way pressure loss testing system for the grouting pipeline shown in FIG. 1; fig. 3 is a schematic structural diagram of a second testing unit in the on-way pressure loss testing system of the grouting pipeline shown in fig. 1. Wherein the direction of the arrows in fig. 2 and 3 refers to the direction of flow of the fluid.
The invention provides a slip casting pipeline on-way pressure loss testing system which comprises a first testing loop, a second testing loop, a first slurry branch 31, a first water glass branch 32 and a third testing loop.
Specifically, the first test circuit is used for detecting the on-way pressure loss of cement slurry, the second test circuit is used for detecting the on-way pressure loss of water glass, and the main structure and the test principle of the first test circuit and the second test circuit can be respectively referred to the specific structure and the detection principle of a conventional hydrodynamics laboratory bench in the prior art, which is not specifically limited herein.
For example, as shown in fig. 1, the first test loop includes a cement slurry tank 11, a grouting pump 13, a test unit and the like, an outlet of the cement slurry tank 11 is connected with a suction port of the grouting pump 13 through a pipeline, an outlet of the grouting pump 13 is connected with a test inlet of the test unit through a pipeline, so as to supply cement slurry through the cement slurry tank 11 and provide cement slurry with a preset pressure for the test unit through the grouting pump 13, and the test unit includes a preset pipeline and various pressure measurement points and the like for testing the on-way pressure loss of the cement slurry.
Further, a ninth switch valve 12 for controlling the on-off of the pipeline is arranged between the cement slurry tank 11 and the grouting pump 13; a pressure gauge 81 is arranged at the outlet of the grouting pump 13; the first test loop further comprises a first overflow loop connected between the outlet of the grouting pump 13 and the cement slurry tank 11, the first overflow loop being provided with a first safety valve 15.
Similarly, the second test loop comprises a water glass tank 21, a water glass liquid pump 23, a test unit and the like, wherein the outlet of the water glass tank 21 is connected with the suction port of the water glass liquid pump 23 through a pipeline, the outlet of the water glass liquid pump 23 is connected with the test inlet of the test unit through a pipeline, so that water glass liquid is supplied through the water glass tank 21, water glass with preset pressure is provided for the test unit through the water glass liquid pump 23, and similarly, the test unit comprises a preset pipeline, each pressure measuring point and the like, and is used for testing the on-way pressure loss of the water glass.
Furthermore, a tenth switch valve 22 for controlling the on-off of the pipeline is arranged between the water glass tank 21 and the water glass liquid pump 23; the outlet of the water glass liquid pump 23 is provided with a pressure gauge 81; the second test loop further comprises a second overflow loop connected between the outlet of the water glass liquid pump 23 and the water glass tank 21, the second overflow loop being provided with a second safety valve 25.
In addition, the first slurry branch 31 is connected to a test outlet of the first test circuit, and the first slurry branch 31 is provided with a first switch valve 311 for controlling the on/off of the first slurry branch 31.
The first water glass branch 32 is connected with a test outlet of the second test loop, and the first water glass branch 32 is provided with a second switch valve 321 for controlling the on-off of the first water glass branch 32.
The third test loop is used for detecting the on-way pressure loss of the mixed liquid of the cement paste and the water glass, a mixer 33 is arranged at a test inlet of the third test loop, a first slurry branch 31 and a first water glass branch 32 are correspondingly connected with two inlets of the mixer 33 respectively, and a test outlet of the third test loop is connected with the containing box 4.
It can be understood that when the first switch valve 311 and the second switch valve 321 are opened, the cement slurry flowing out of the test outlet of the first test loop flows into the mixer 33 through the first slurry branch 31, the water glass flowing out of the test outlet of the second test loop flows into the mixer 33 through the first water glass branch 32, after the cement slurry and the water glass are mixed in the mixer 33, the mixed liquid of the cement slurry and the water glass flows into the test unit of the third test loop, and similarly, the test unit of the third test loop comprises preset pipelines and various pressure measuring points and the like for testing the on-way pressure loss of the mixed liquid, and the mixed liquid finally flows into the storage box 4 after passing through the test unit, and the storage box 4 is used for collecting the mixed liquid to avoid polluting the test environment.
It should be noted that when the first switch valve 311 is closed, the first test circuit can separately test the on-way pressure loss of the cement slurry; the second test circuit is capable of separately testing the on-way pressure loss of the water glass when the second switching valve 321 is closed.
Furthermore, the pipeline structures and pipe diameters of the test units of the first test circuit, the second test circuit and the third test circuit can be the same or different, and the pipeline structures and pipe diameters can be selected by a person skilled in the art according to actual needs.
Therefore, the slip casting pipeline on-way pressure loss testing system provided by the invention can test the on-way pressure loss of cement paste by adopting the first testing loop, can test the on-way pressure loss of water glass by adopting the second testing loop, and can test the on-way pressure loss of the mixed liquid of the cement paste and the water glass by adopting the third testing loop, namely, the slip casting pipeline on-way pressure loss testing system can comprehensively test the on-way pressure loss of the cement paste, the water glass and the mixed liquid of the cement paste and the water glass, and the testing efficiency is high.
As shown in fig. 2, in view of the specific implementation of the test units of the first test circuit and the second test circuit, as a preferred solution, on the basis of the above embodiment, each of the first test circuit and the second test circuit includes at least two first test units 5, each of the first test units 5 includes a first inlet control valve 51, a first outlet control valve 52, and an elbow 53, a first hard pipe 54, and a first flexible pipe 55, which are disposed between the first inlet control valve 51 and the first outlet control valve 52 and are connected in series, and both ends of the elbow 53, both ends of the preset length of the first hard pipe 54, and both ends of the preset length of the first flexible pipe 55 are provided with first pressure measurement points 56 for detecting pressure.
It should be noted that the first testing loop includes more than two first testing units 5, and the parameters of the elbows 53 and/or the pipe diameters of the first hard pipes 54 and/or the pipe diameters of the first flexible pipes 55 in different first testing units 5 are different, so as to be able to perform the cement slurry on-way pressure loss test on pipelines with various pipe diameters in one test.
Similarly, the second testing loop comprises more than two first testing units 5, and the parameters of the elbows 53 and/or the pipe diameters of the first hard pipes 54 and/or the pipe diameters of the first soft pipes 55 in different first testing units 5 are different, so that the water glass on-way pressure loss test can be carried out on pipelines with various pipe diameters in one test.
In addition, it should be noted that the parameters of the elbow 53 and/or the pipe diameter of the first hard pipe 54 and/or the pipe diameter of the first flexible pipe 55 in the first test unit 5 of the first test circuit and the second test circuit may be the same or different, and those skilled in the art may select the parameters according to actual needs.
It can be understood that the pressure difference between the two ends of the elbow 53 is the pressure loss generated when the cement slurry or the water glass passes through the elbow 53; the pressure difference between the two ends of the preset length section of the first hard pipe 54 is divided by the length value of the preset length section, that is, the pressure loss of the cement slurry or the water glass in unit length passing through the first hard pipe 54; the pressure difference between the two ends of the preset length section of the first hose 55 is divided by the length of the preset length section, which is the pressure loss per unit length of the cement slurry or water glass passing through the first hose 55.
It should be noted that the pressure value tested by each first pressure measuring point 56 can be directly fed back to the control device of the grouting pipeline on-way pressure loss testing system, so that the control device can automatically generate a test report in each experiment according to the pressure value tested by each first pressure measuring point 56 and the length values of the respective preset length sections of the preset first hard pipe 54 and the first hose 55, and according to a preset calculation formula, thereby improving the test efficiency and reducing the working strength of the tester.
In consideration of the convenience of the arrangement of the first pressure measuring points 56 and the convenience of the calculation of the pressure loss, it is preferable that the first pressure measuring points 56 are provided at both ends of the entire length of the first hard pipe 54 and both ends of the entire length of the first soft pipe 55, only one first pressure measuring point 56 is provided at the connection of the first hard pipe 54 and the first soft pipe 55, and only one first pressure measuring point 56 is provided at the connection of the outlet of the elbow 53 and the first hard pipe 54.
As shown in fig. 3, considering that the solidification speed of the mixed liquid of cement slurry and water glass is relatively fast, a straight pipe is usually used for transportation, and the existence of the elbow 53 should be avoided as much as possible, therefore, based on the above embodiment, the third testing loop includes at least two second testing units 6, each second testing unit 6 includes a second inlet control valve 61, a second outlet control valve 62, and a second hard pipe 63 and a second soft pipe 64 which are arranged between the second inlet control valve 61 and the second outlet control valve 62 and are connected in series, and both ends of the preset length section of the second hard pipe 63 and both ends of the preset length section of the second soft pipe 64 are provided with second pressure measuring points 65 for detecting pressure.
It should be noted that the third testing loop includes more than two second testing units 6, and the pipe diameters of the second hard pipes 63 and/or the pipe diameters of the second flexible pipes 64 in different second testing units 6 are different, so as to be able to perform the mixed liquid on-way pressure loss test on the pipelines with various pipe diameters in one test.
It can be understood that the pressure difference between the two ends of the preset length of the second hard pipe 63 is divided by the length of the preset length, which is the pressure loss per unit length of the mixed liquid passing through the second hard pipe 63; the pressure difference between the two ends of the preset length of the second hose 64 is divided by the length of the preset length, which is the pressure loss per unit length of the mixed liquid passing through the second hose 64.
It should be noted that the pressure value tested by each second pressure measuring point 65 can be directly fed back to the control device of the grouting pipeline on-way pressure loss testing system, so that the control device can automatically generate a test report in each experiment according to the pressure value tested by each second pressure measuring point 65 and the preset length value of each preset length segment of the second hard pipe 63 and the second soft pipe 64, and according to a preset calculation formula.
Therefore, the elbow 53 of the mixed liquid testing unit is omitted, the cost is reduced, and meanwhile, the fitting degree of the grouting pipeline on-way pressure loss testing system and the actual engineering situation is increased.
In consideration of the convenience of the arrangement of the second pressure measuring points 65 and the convenience of the calculation of the pressure loss, it is preferable that the second pressure measuring points 65 be provided at both ends of the entire length of the second hard tube 63 and both ends of the entire length of the second flexible tube 64, and only one second pressure measuring point 65 be provided at the connection of the second hard tube 63 and the second flexible tube 64.
In view of the reliability of the pressure measurement points, on the basis of the above-described embodiment, the first pressure measurement point 56 and the second pressure measurement point 65 each include the pressure sensor 82 and the pressure gauge 81.
The pressure gauge 81 is used for displaying a pressure value, so that whether the pressure sensor 82 breaks down or not is judged by comparing the pressure value displayed by the pressure gauge 81 with the pressure value fed back by the pressure sensor 82, and the grouting pipeline on-way pressure loss testing system is more reliable.
In order to avoid the blockage of the corresponding pipelines by cement slurry and mixed liquid, on the basis of the above embodiment, the grouting pipeline on-way pressure loss testing system further comprises a high-pressure flushing loop for cleaning the inner walls of the pipelines of the first testing loop and the third testing loop, so that after each testing unit is tested or after the test is finished, the pipelines of the first testing loop and the third testing loop are cleaned by the high-pressure flushing loop, the pipelines are prevented from being cleaned manually, and the testing efficiency is further improved.
As shown in fig. 1, specifically, the high pressure flushing circuit includes a first cleaning branch 72 and a second cleaning branch 73, the first cleaning branch 72 is connected between an outlet of the flushing water pump 71 of the high pressure flushing circuit and a suction port of the grouting pump 13 of the first testing circuit, the second cleaning branch 73 is connected between an outlet of the flushing water pump 71 and the first mud branch 31, the first cleaning branch 72 is provided with a third on/off valve 721, and the second cleaning branch 73 is provided with a fourth on/off valve 731.
In view of the supply of the high pressure water source of the high pressure flushing circuit, the high pressure flushing circuit further comprises a flushing tank and a flushing water pump 71, an outlet of the flushing tank is connected with a suction port of the flushing water pump 71 through a pipeline, the flushing tank is used for supplying flushing water, the flushing water pump 71 is used for supplying high pressure water to the first cleaning branch 72 and the second cleaning branch 73, and an eleventh switch valve 76 for controlling the on-off of the pipeline is preferably arranged between the flushing tank and the flushing water pump 71.
It is further preferred that the high pressure flush circuit further comprises a third overflow circuit connected between the outlet of the flush water pump 71 and the flush tank, the third overflow circuit being provided with a third relief valve 77.
When the eleventh switch valve 76 is opened and the wash water pump 71 works, the third switch valve 721 is opened, and wash water flows out from the wash water pump 71, then sequentially flows into the grouting pump 13 and the test unit of the first test loop through the first washing branch 72, and finally flows out from the test outlet of the test unit, so as to achieve the purpose of washing the first test loop, thereby preventing cement slurry from blocking the pipeline of the first test loop.
When the eleventh switch valve 76 is opened and the wash water pump 71 is operated, the fourth switch valve 731 is opened, and wash water flows out of the wash water pump 71, then flows into the first slurry branch 31, the mixer 33 and the test unit of the third test circuit in sequence through the second wash branch 73, finally flows out of the test outlet of the test unit of the third test circuit, and flows into the storage box 4, so as to achieve the purpose of washing the third test circuit, thereby preventing the mixed liquid containing cement slurry from blocking the pipeline of the third test circuit.
In order to recycle the cement slurry when the on-way pressure loss of the cement slurry is separately tested, on the basis of the above embodiment, the first test circuit includes the second slurry branch 14, one end of the second slurry branch 14 is connected to the test outlet of the first test circuit, the other end of the second slurry branch 14 is connected to the cement slurry tank 11 of the first test circuit, and the second slurry branch 14 is provided with the fifth on-off valve 141 for controlling the on-off of the second slurry branch 14.
That is to say, after the cement slurry flows out from the test outlet of the first test loop, two parallel branches, namely the first slurry branch 31 and the second slurry branch 14, are led out, when the first switch valve 311 on the first slurry branch 31 is closed and the fifth switch valve 141 on the second slurry branch 14 is opened, the on-way pressure loss of the cement slurry can be tested independently, so that the cement slurry flowing out from the test outlet of the first test loop flows back to the cement slurry tank 11 through the second slurry branch 14, the cyclic utilization of the cement slurry is realized, and the waste of test materials is avoided.
In view of the problem of recycling the cleaning water when the high-pressure flushing circuit cleans the first test circuit, on the basis of the above-mentioned embodiment, the high-pressure flushing circuit includes the third cleaning branch 74, one end of the third cleaning branch 74 is connected to the second slurry branch 14, the other end of the third cleaning branch 74 is connected to the storage box 4, and the third cleaning branch 74 is provided with the sixth switch valve 741; the second mud branch 14 is provided with a seventh on-off valve 142 from its connection point with the third wash branch 74 to the cement slurry tank 11.
That is, in this embodiment, one branch, the third cleaning branch 74, is led out from the middle of the second slurry branch 14. When the first test circuit is cleaned, the seventh switch valve 142 is closed, the sixth switch valve 741 is opened, and the cleaning water flowing out from the test outlet of the first test circuit flows into the third cleaning branch 74 via the second slurry branch 14, and finally flows into the storage box 4 via the third cleaning branch 74, that is, the storage box 4 may also be used to collect the waste water after cleaning the pipeline.
It is clear that when the first test circuit is tested, the sixth on-off valve 741 is closed and the seventh on-off valve 142 is opened, allowing the cement slurry flowing from the test outlet of the first test circuit to flow into the cement tank 11 via the second slurry branch 14.
When the on-way pressure loss of the water glass is separately tested, in order to recycle the water glass, on the basis of the above embodiment, the second test circuit includes a second water glass branch 24, one end of the second water glass branch 24 is connected to the test outlet of the second test circuit, the other end of the second water glass branch 24 is connected to the water glass tank 21 of the second test circuit, and the second water glass branch 24 is provided with an eighth switch valve 241 for controlling the on-off of the second water glass branch 24.
That is to say, after the test outlet of the second test loop comes out, two parallel branches, namely the first water glass branch 32 and the second water glass branch 24, are led out, when the second switch valve 321 on the first water glass branch 32 is closed and the eighth switch valve 241 on the second water glass branch 24 is opened, the on-way pressure loss of the water glass can be tested independently, so that the water glass coming out of the test outlet of the second test loop flows back to the water glass tank 21 through the second water glass branch 24, the water glass is recycled, and the waste of test materials is avoided.
In the above embodiments, the present invention does not limit the specific configurations of the first switching valve 311, the second switching valve 321, the third switching valve 721, the fourth switching valve 731, the fifth switching valve 141, the sixth switching valve 741, the seventh switching valve 142, the eighth switching valve 241, the ninth switching valve 12, the tenth switching valve 22, the eleventh switching valve 76, and the like, as long as the on/off of the pipeline can be controlled. For example, each of the switch valves may be a pneumatic ball valve, a hydraulic ball valve, an electric ball valve, a manual ball valve, a knife gate valve, a butterfly valve, or the like.
Preferably, in addition to the above embodiments, the first switch valve 311, the second switch valve 321, the third switch valve 721, the fourth switch valve 731, the fifth switch valve 141, the sixth switch valve 741, the seventh switch valve 142, the eighth switch valve 241, the ninth switch valve 12, the tenth switch valve 22, and the eleventh switch valve 76 are all automatic control valves, so that the opening and closing of each automatic control valve is automatically controlled by the control device of the grouting pipeline on-way pressure loss testing system, so that the overall automation degree of the grouting pipeline on-way pressure loss testing system is high, and further, after a tester prepares a required slurry, the testing can be completed in a control room.
On the basis of the above embodiment, the first test loop, the second test loop, the first slurry branch 31 and the first water glass branch 32 are all provided with the flow meters 9 to test the on-way pressure loss of the slurry and the water glass at different flow rates, and simultaneously, the on-way pressure loss of the mixed liquid with different proportions can be tested.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The on-way pressure loss testing system for the grouting pipeline provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. An on-way pressure loss test system of a grouting pipeline is characterized by comprising:
a first test loop for detecting an on-way pressure loss of the cement slurry;
a second test circuit for detecting an on-way pressure loss of the water glass;
the first slurry branch (31) is connected with a test outlet of the first test circuit, and the first slurry branch (31) is provided with a first switch valve (311) for controlling the on-off of the first slurry branch (31);
the first water glass branch (32) is connected with a test outlet of the second test loop, and the first water glass branch (32) is provided with a second switch valve (321) for controlling the on-off of the first water glass branch (32);
the third testing loop is used for detecting the on-way pressure loss of the mixed liquid of the cement slurry and the water glass, a mixer (33) is arranged at a testing inlet of the third testing loop, the first slurry branch (31) and the first water glass branch (32) are correspondingly connected with two inlets of the mixer (33) respectively, and a testing outlet of the third testing loop is connected with the containing box (4).
2. The grouting pipe on-way pressure loss test system according to claim 1, wherein the first test loop and the second test loop each comprise at least two first test units (5), each first test unit (5) comprises a first inlet control valve (51), a first outlet control valve (52), and an elbow (53), a first hard pipe (54) and a first hose (55) which are arranged between the first inlet control valve (51) and the first outlet control valve (52) and in series, and both ends of the elbow (53), both ends of the preset length of the first hard pipe (54) and both ends of the preset length of the first hose (55) are provided with first pressure measuring points (56) for detecting pressure.
3. The grouting line on-way pressure loss test system according to claim 2, wherein the third test loop comprises at least two second test units (6), each second test unit (6) comprises a second inlet control valve (61), a second outlet control valve (62), and a second hard pipe (63) and a second flexible pipe (64) which are arranged between the second inlet control valve (61) and the second outlet control valve (62) and are arranged in series, and both ends of the preset length of the second hard pipe (63) and both ends of the preset length of the second flexible pipe (64) are provided with second pressure measuring points (65) for detecting pressure.
4. Grouting line on-way pressure loss test system according to claim 3, characterised in that the first pressure measurement point (56) and the second pressure measurement point (65) each comprise:
a pressure sensor (82) for real-time feedback of pressure values;
and a pressure gauge (81) for displaying the pressure value.
5. The grouting line in-path pressure loss test system according to any of claims 1 to 4, further comprising a high pressure flushing circuit for cleaning the inner wall of the pipes of the first test circuit and the third test circuit, the high pressure flushing circuit comprising:
the first cleaning branch (72) is connected between the outlet of a flushing water pump (71) of the high-pressure flushing loop and the inlet of a grouting pump (13) of the first testing loop, and the first cleaning branch (72) is provided with a third switch valve (721);
and the second cleaning branch (73) is connected between the outlet of the flushing water pump (71) and the first slurry branch (31), and the second cleaning branch (73) is provided with a fourth switch valve (731).
6. The grouting line on-way pressure loss test system according to claim 5, characterized in that the first test circuit comprises a second slurry branch (14), one end of the second slurry branch (14) is connected with a test outlet of the first test circuit, the other end of the second slurry branch (14) is connected with a slurry tank (11) of the first test circuit, and the second slurry branch (14) is provided with a fifth switch valve (141).
7. The slip casting line on-way pressure loss test system according to claim 6, characterized in that the high-pressure flushing circuit comprises a third cleaning branch (74), one end of the third cleaning branch (74) is connected with the second slurry branch (14), the other end of the third cleaning branch (74) is connected with the receiving box (4), and the third cleaning branch (74) is provided with a sixth switch valve (741); a seventh switch valve (142) is arranged between the second slurry branch (14) and the cement slurry tank (11) from the connection point of the second slurry branch and the third cleaning branch (74).
8. The grouting line on-way pressure loss testing system according to claim 7, characterized in that the second testing loop comprises a second water glass branch (24), one end of the second water glass branch (24) is connected with a testing outlet of the second testing loop, the other end of the second water glass branch (24) is connected with a water glass tank (21) of the second testing loop, and the second water glass branch (24) is provided with an eighth switch valve (241).
9. The slip casting pipeline on-way pressure loss test system according to claim 8, wherein the first switch valve (311), the second switch valve (321), the third switch valve (721), the fourth switch valve (731), the fifth switch valve (141), the sixth switch valve (741), the seventh switch valve (142) and the eighth switch valve (241) are all automatic control valves, so that opening and closing of the automatic control valves are automatically controlled by a control device of the slip casting pipeline on-way pressure loss test system.
10. The grouting line on-way pressure loss test system according to claim 5, characterized in that the first test circuit, the second test circuit, the first slurry branch (31) and the first water glass branch (32) are provided with flow meters (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010333127.0A CN111397844A (en) | 2020-04-24 | 2020-04-24 | Slip casting pipeline on-way pressure loss test system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010333127.0A CN111397844A (en) | 2020-04-24 | 2020-04-24 | Slip casting pipeline on-way pressure loss test system |
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| CN111397844A true CN111397844A (en) | 2020-07-10 |
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| CN202010333127.0A Pending CN111397844A (en) | 2020-04-24 | 2020-04-24 | Slip casting pipeline on-way pressure loss test system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112451756A (en) * | 2020-11-18 | 2021-03-09 | 济南大学 | Pressure loss compensation method for pressure quality detection of hydrocephalus shunt |
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2020
- 2020-04-24 CN CN202010333127.0A patent/CN111397844A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112451756A (en) * | 2020-11-18 | 2021-03-09 | 济南大学 | Pressure loss compensation method for pressure quality detection of hydrocephalus shunt |
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