A grouting pipeline along the pressure loss test system

Abstract

The invention discloses a grouting pipeline along-line pressure loss test system, comprising: a first test loop for detecting the along-line pressure loss of cement slurry; a second test loop for detecting the along-line pressure loss of water glass; a first mud branch connected to the test outlet of the first test loop, the first mud branch is provided with a first switch valve; a first water glass branch connected to the test outlet of the second test loop, the first water glass branch is provided with a second switch valve; a third test loop for detecting the along-line pressure loss of a mixture of cement slurry and water glass, the test inlet of the third test loop is provided with a mixer, the first mud branch and the first water glass branch are respectively connected to two corresponding inlets of the mixer, and the test outlet of the third test loop is connected to a storage box. The grouting pipeline along-line pressure loss test system can comprehensively test the along-line pressure loss of cement slurry, water glass and the mixture of cement slurry and water glass, and has high test efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of shield machine grouting pipeline detection equipment, and more specifically to a grouting pipeline along-the-way pressure loss testing system. Background Art

[0002] The shield machine is the main excavation equipment for tunnel construction. During the construction process using the shield machine, when the segment comes out from the shield tail of the shield machine, there will be a certain gap between it and the surrounding soil layer. In order to control ground subsidence and deformation of the surrounding soil and stabilize the segment ring structure, it is necessary to inject cement slurry with a specific ratio into the gap at the shield tail of the shield machine.

[0003] Due to the large specific gravity of cement slurry, the pressure loss along the pipeline is more obvious. In addition, cement slurry has cement hydration effect. When the pressure of cement slurry in the pipeline is too low and the flow rate is too slow, it is very easy to solidify, and then block the pipeline, affecting the construction progress. Therefore, in order to ensure the smoothness of the grouting pipeline of the shield machine during construction, it is necessary to make the cement slurry have a reasonable pressure in the pipeline. This requires precise control of the pressure loss of cement slurry in the pipeline to avoid frequent blockage of the pipeline.

[0004] In the prior art, a conventional fluid mechanics test bench is usually used to test the pressure loss along the cement slurry. However, sometimes, in order to speed up the solidification rate of the injected cement slurry, it is also necessary to mix a water glass solution of a specific ratio into the cement slurry to perform double-liquid grouting. After the double liquids are mixed, the cement slurry solidifies faster and its pressure loss along the cement slurry will also change. In the prior art, only the existing conventional fluid mechanics test bench can be used to test the pressure loss along the cement slurry, water glass and the double liquid mixed in a certain ratio. There is no test bench specifically for the pressure loss test along the shield machine grouting pipeline, so the test is not comprehensive and the test efficiency is low.

[0005] Therefore, how to provide a grouting pipeline along-the-line pressure loss testing system that can comprehensively test the along-the-line pressure loss of cement slurry, water glass, and a mixture of cement slurry and water glass is a problem that urgently needs to be solved by technical personnel in this field. Summary of the invention

[0006] In view of this, the purpose of the present invention is to provide a grouting pipeline along-the-line pressure loss testing system, which can comprehensively test the along-the-line pressure loss of cement slurry, water glass and a mixture of cement slurry and water glass, and has high testing efficiency.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A grouting pipeline along-the-way pressure loss testing system, comprising:

[0009] A first test loop for detecting the pressure loss along the cement slurry;

[0010] A second test circuit for detecting the pressure loss along the water glass;

[0011] A first mud branch connected to the test outlet of the first test circuit, wherein the first mud branch is provided with a first switch valve for controlling the on-off of the first mud branch;

[0012] A first water glass branch connected to the test outlet of the second test circuit, wherein the first water glass branch is provided with a second switch valve for controlling the on-off of the first water glass branch;

[0013] A third test circuit is used to detect the pressure loss along the mixed liquid of the cement slurry and the water glass, the test inlet of the third test circuit is provided with a mixer, the first mud branch and the first water glass branch are respectively connected to the two inlets of the mixer, and the test outlet of the third test circuit is connected to a storage box.

[0014] Preferably, the first test loop and the second test loop each include at least two first test units, each of the first test units includes a first inlet control valve, a first outlet control valve, and an elbow, a first hard pipe and a first soft pipe which are arranged in series between the first inlet control valve and the first outlet control valve, and both ends of the elbow, both ends of the preset length section of the first hard pipe and both ends of the preset length section of the first soft pipe are provided with first pressure measuring points for detecting pressure.

[0015] Preferably, the third test circuit includes at least two second test units, each of the second test units includes a second inlet control valve, a second outlet control valve, and a second hard pipe and a second soft pipe which are arranged in series between the second inlet control valve and the second outlet control valve, and second pressure measuring points for detecting pressure are provided at both ends of the preset length section of the second hard pipe and both ends of the preset length section of the second soft pipe.

[0016] Preferably, the first pressure measuring point and the second pressure measuring point both include:

[0017] A pressure sensor for real-time feedback of pressure values;

[0018] A pressure gauge used to display pressure values.

[0019] Preferably, it also includes a high-pressure flushing circuit for cleaning the inner wall of the pipeline of the first test circuit and the third test circuit, and the high-pressure flushing circuit includes:

[0020] A first cleaning branch connected between the flushing water pump outlet of the high-pressure flushing circuit and the grouting pump inlet of the first test circuit, wherein the first cleaning branch is provided with a third switch valve;

[0021] A second cleaning branch is connected between the flushing water pump outlet and the first mud branch, and the second cleaning branch is provided with a fourth switch valve.

[0022] Preferably, the first test loop includes a second mud branch, one end of the second mud branch is connected to the test outlet of the first test loop, the other end of the second mud branch is connected to the cement slurry tank of the first test loop, and the second mud branch is provided with a fifth switch valve.

[0023] Preferably, the high-pressure flushing circuit includes a third cleaning branch, one end of the third cleaning branch is connected to the second mud branch, the other end of the third cleaning branch is connected to the storage box, and the third cleaning branch is provided with a sixth switch valve; the second mud branch is provided with a seventh switch valve from its connection point with the third cleaning branch to the cement slurry tank.

[0024] Preferably, the second test loop includes a second water glass branch, one end of the second water glass branch is connected to the test outlet of the second test loop, the other end of the second water glass branch is connected to the water glass tank of the second test loop, and the second water glass branch is provided with an eighth switch valve.

[0025] 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 can be automatically controlled by the control device of the grouting pipeline pressure loss test system.

[0026] Preferably, the first test loop, the second test loop, the first mud branch and the first water glass branch are all provided with flow meters.

[0027] The grouting pipeline along-the-line pressure loss testing system provided by the present invention can, during testing, use the first test loop to test the along-the-line pressure loss of cement slurry, use the second test loop to test the along-the-line pressure loss of water glass, and use the third test loop to test the along-the-line pressure loss of a mixture of cement slurry and water glass. That is, the grouting pipeline along-the-line pressure loss testing system can comprehensively test the along-the-line pressure loss of cement slurry, water glass, and the mixture of cement slurry and water glass, and the testing efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0029] Figure 1 It is a structural schematic diagram of a specific embodiment of the grouting pipeline along-the-line pressure loss testing system provided by the present invention;

[0030] Figure 2 for Figure 1 A schematic diagram of the structure of the first test unit in the grouting pipeline along-line pressure loss test system shown;

[0031] Figure 3 for Figure 1 The diagram shows the structure of the second test unit in the grouting pipeline along-line pressure loss test system.

[0032] Figures 1 to 3 The reference numerals in the figures are as follows:

[0033] 11 is a cement slurry tank, 12 is the ninth switch valve, 13 is a grouting pump, 14 is a second mud 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 mud 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 soft pipe, 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 soft pipe, 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

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The core of the present invention is to provide a grouting pipeline along-line pressure loss testing system, which can comprehensively test the along-line pressure loss of cement slurry, water glass and a mixture of cement slurry and water glass, and has high testing efficiency.

[0036] Please refer to Figure 1-Figure 3 , Figure 1 It is a structural schematic diagram of a specific embodiment of the grouting pipeline along-the-line pressure loss testing system provided by the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of the first test unit in the grouting pipeline along-line pressure loss test system shown; Figure 3 for Figure 1 The structural diagram of the second test unit in the grouting pipeline pressure loss test system is shown in FIG. Figure 2 and Figure 3 The direction of the arrow indicates the flow direction of the fluid.

[0037] The present invention provides a grouting pipeline along-the-way pressure loss testing system, comprising a first testing loop, a second testing loop, a first mud branch 31, a first water glass branch 32 and a third testing loop.

[0038] Specifically, the first test loop is used to detect the pressure loss along the cement slurry, and the second test loop is used to detect the pressure loss along the water glass. The main structure and testing principle of the first test loop and the second test loop can be respectively referred to the specific structure and testing principle of the conventional fluid mechanics test bench in the prior art, and no specific limitation is made in this article.

[0039] For example, Figure 1 As shown, the first test loop includes a cement slurry tank 11, a grouting pump 13 and a test unit, etc. The outlet of the cement slurry tank 11 is connected to the suction port of the grouting pump 13 through a pipeline, and the outlet of the grouting pump 13 is connected to the 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 of a preset pressure to the test unit through the grouting pump 13. The test unit includes a preset pipeline and various pressure measuring points, etc., for testing the pressure loss of cement slurry along the process.

[0040] Furthermore, a ninth switch valve 12 for controlling the on-off of the pipeline is provided between the cement slurry tank 11 and the grouting pump 13; a pressure gauge 81 is provided at the outlet of the grouting pump 13; the first test circuit also includes a first overflow circuit connected between the outlet of the grouting pump 13 and the cement slurry tank 11, and the first overflow circuit is provided with a first safety valve 15.

[0041] Similarly, the second test circuit includes a water glass tank 21, a water glass liquid pump 23 and a test unit, etc. The outlet of the water glass tank 21 is connected to the suction port of the water glass liquid pump 23 through a pipeline, and the outlet of the water glass liquid pump 23 is connected to the test inlet of the test unit through a pipeline, so as to supply water glass liquid through the water glass tank 21, and provide water glass with a preset pressure to the test unit through the water glass liquid pump 23. Similarly, the test unit includes a preset pipeline and various pressure measuring points, etc., for testing the pressure loss of the water glass along the process.

[0042] Furthermore, a tenth switch valve 22 for controlling the on-off of the pipeline is provided between the water glass tank 21 and the water glass liquid pump 23; a pressure gauge 81 is provided at the outlet of the water glass liquid pump 23; the second test circuit also includes a second overflow circuit connected between the outlet of the water glass liquid pump 23 and the water glass tank 21, and the second overflow circuit is provided with a second safety valve 25.

[0043] In addition, the first mud branch 31 is connected to the test outlet of the first test loop, and the first mud branch 31 is provided with a first switch valve 311 for controlling the on-off of the first mud branch 31 .

[0044] The first water glass branch 32 is connected to the test outlet of the second test loop. 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 .

[0045] The third test loop is used to detect the pressure loss along the mixture of cement slurry and water glass. The test inlet of the third test loop is provided with a mixer 33. The first mud branch 31 and the first water glass branch 32 are respectively connected to the two inlets of the mixer 33. The test outlet of the third test loop is connected to the storage box 4.

[0046] It can be understood that when the first switch valve 311 and the second switch valve 321 are opened, the cement slurry flowing out from the test outlet of the first test loop flows into the mixer 33 via the first mud branch 31, and the water glass flowing out from the test outlet of the second test loop flows into the mixer 33 via 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. Similarly, the test unit of the third test loop includes a preset pipeline and various pressure measuring points, etc., which are used to test the pressure loss of the mixed liquid along the way. After passing through the test unit, the mixed liquid finally flows into the storage box 4. The storage box 4 is used to collect the mixed liquid to avoid polluting the test environment.

[0047] It should be noted that when the first switch valve 311 is closed, the first test circuit can test the pressure loss along the cement slurry alone; when the second switch valve 321 is closed, the second test circuit can test the pressure loss along the water glass alone.

[0048] Furthermore, the pipeline structures and pipe diameters of the test units of the first test loop, the second test loop and the third test loop may be the same or different, and those skilled in the art may select according to actual needs.

[0049] It can be seen from this that the grouting pipeline along-the-line pressure loss testing system provided by the present invention can, during testing, use the first test circuit to test the along-the-line pressure loss of cement slurry, use the second test circuit to test the along-the-line pressure loss of water glass, and use the third test circuit to test the along-the-line pressure loss of the mixture of cement slurry and water glass. That is, the grouting pipeline along-the-line pressure loss testing system can comprehensively test the along-the-line pressure loss of cement slurry, water glass, and the mixture of cement slurry and water glass, and the testing efficiency is high.

[0050] like Figure 2 As shown, taking into account the specific implementation of the test units of the first test loop and the second test loop, as a preferred scheme, on the basis of the above embodiment, the first test loop and the second test loop each include at least two first test units 5, each first test unit 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 soft pipe 55 which are arranged in series between the first inlet control valve 51 and the first outlet control valve 52, and both ends of the elbow 53, both ends of the preset length section of the first hard pipe 54 and both ends of the preset length section of the first soft pipe 55 are provided with first pressure measuring points 56 for detecting pressure.

[0051] It should be noted that the first test loop includes more than two first test units 5, and the parameters of the elbows 53 and / or the diameters of the first hard pipes 54 and / or the diameters of the first soft pipes 55 in different first test units 5 are different, so that the cement slurry pressure loss along the pipelines of various diameters can be tested in one test.

[0052] Similarly, the second test circuit includes more than two first test units 5, and the parameters of the elbows 53 and / or the diameters of the first hard pipes 54 and / or the diameters of the first soft pipes 55 in different first test units 5 are different, so that the water glass pressure loss along the pipelines of various diameters can be tested in one test.

[0053] In addition, it should be noted that the parameters of the elbow 53 in the first test unit 5 of the first test loop and the second test loop and / or the diameter of the first hard pipe 54 and / or the diameter of the first soft pipe 55 may be the same or different, and technical personnel in this field may choose according to actual needs.

[0054] It can be understood that the pressure difference at both ends of the elbow 53 is the pressure loss generated when the cement slurry or water glass passes through the elbow 53; the pressure difference at both ends of the preset length segment of the first hard tube 54 divided by the length value of the preset length segment is the unit length pressure loss of the cement slurry or water glass passing through the first hard tube 54; the pressure difference at both ends of the preset length segment of the first hose 55 divided by the length value of the preset length segment is the unit length pressure loss of the cement slurry or water glass passing through the first hose 55.

[0055] It should be noted that the pressure values ​​tested at each first pressure measuring point 56 can be directly fed back to the control device of the grouting pipeline along-the-line pressure loss test system, so that the control device automatically generates a test report in each experiment based on the pressure values ​​tested at each first pressure measuring point 56 and the length values ​​of the preset length segments of the preset first hard pipe 54 and the first soft pipe 55, and according to the preset calculation formula, thereby facilitating improving the test efficiency and reducing the workload of the test personnel.

[0056] Taking into account the convenience of arranging the first pressure measuring point 56 and the convenience of calculating the pressure loss, as a preferred solution, the first pressure measuring points 56 are set at both ends of the entire length of the first rigid tube 54 and at both ends of the entire length of the first flexible tube 55, only one first pressure measuring point 56 is set at the connection between the first rigid tube 54 and the first flexible tube 55, and only one first pressure measuring point 56 is set at the connection between the outlet of the elbow 53 and the first rigid tube 54.

[0057] like Figure 3 As shown, considering that the solidification speed of the mixture of cement slurry and water glass is relatively fast, straight pipes are usually used for transportation, and the presence of elbows 53 should be avoided as much as possible. Therefore, based on the above embodiment, the third test circuit includes at least two second test units 6, each of which 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 arranged in series between the second inlet control valve 61 and the second outlet control valve 62, and second pressure measuring points 65 for detecting pressure are provided at both ends of the preset length section of the second hard pipe 63 and the preset length section of the second soft pipe 64.

[0058] It should be noted that the third test loop includes more than two second test units 6, and the diameters of the second hard tubes 63 and / or the second soft tubes 64 in different second test units 6 are different, so that the mixed liquid pressure loss along the pipelines of various diameters can be tested in one test.

[0059] It can be understood that the pressure difference at both ends of the preset length segment of the second hard tube 63 divided by the length value of the preset length segment is the unit length pressure loss of the mixed liquid passing through the second hard tube 63; the pressure difference at both ends of the preset length segment of the second hose 64 divided by the length value of the preset length segment is the unit length pressure loss of the mixed liquid passing through the second hose 64.

[0060] It should be noted that the pressure values ​​tested at each second pressure measuring point 65 can be directly fed back to the control device of the grouting pipeline along-the-line pressure loss test system, so that the control device automatically generates a test report in each experiment based on the pressure values ​​tested at each second pressure measuring point 65 and the length values ​​of the preset length segments of the preset second hard pipe 63 and the second soft pipe 64, and according to the preset calculation formula.

[0061] It can be seen from this that the elbow 53 of the mixed liquid test unit is eliminated in this embodiment, which reduces the cost while increasing the compatibility of the pressure loss test system along the grouting pipeline with the actual engineering situation.

[0062] Taking into account the convenience of arranging the second pressure measuring point 65 and the convenience of calculating the pressure loss, as a preferred solution, second pressure measuring points 65 are set at both ends of the entire length of the second hard tube 63 and at both ends of the entire length of the second hose 64, and only one second pressure measuring point 65 is set at the connection between the second hard tube 63 and the second hose 64.

[0063] Taking the reliability of the pressure measuring points into consideration, on the basis of the above embodiment, the first pressure measuring point 56 and the second pressure measuring point 65 both include a pressure sensor 82 and a pressure gauge 81 .

[0064] The pressure sensor 82 and the pressure gauge 81 are both used to detect pressure values. At the same time, the pressure sensor 82 can be connected to the control device of the grouting pipeline along-line pressure loss test system to provide real-time feedback of the pressure value, so that the control device can automatically calculate the along-line pressure loss of cement slurry, water glass or mixed liquid.

[0065] The pressure gauge 81 is used to display the pressure value, so as to judge whether the pressure sensor 82 is faulty by comparing the pressure value displayed by the pressure gauge 81 with the pressure value fed back by the pressure sensor 82, thereby making the pressure loss test system along the grouting pipeline more reliable.

[0066] In order to prevent cement slurry and mixed liquid from clogging the corresponding pipelines, on the basis of the above-mentioned embodiment, the grouting pipeline along-the-line pressure loss test system also includes a high-pressure flushing circuit for cleaning the inner walls of the pipes of the first test loop and the third test loop, so that after each test unit test or after the end of the experiment, the pipelines of the first test loop and the third test loop are cleaned by the high-pressure flushing circuit, thereby avoiding manual cleaning of the pipelines and further improving the test efficiency.

[0067] like Figure 1 As shown, 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 the outlet of the flushing water pump 71 of the high-pressure flushing circuit and the suction port of the grouting pump 13 of the first test circuit, and the second cleaning branch 73 is connected between the outlet of the flushing water pump 71 and the first mud branch 31. The first cleaning branch 72 is provided with a third switch valve 721, and the second cleaning branch 73 is provided with a fourth switch valve 731.

[0068] Taking into account the supply of high-pressure water source for the high-pressure flushing circuit, the high-pressure flushing circuit also includes a flushing water tank and a flushing water pump 71. The outlet of the flushing water tank is connected to the suction port of the flushing water pump 71 through a pipeline. The flushing water tank is used to supply flushing water, and the flushing water pump 71 is used to provide high-pressure water to the first cleaning branch 72 and the second cleaning branch 73. An eleventh switch valve 76 for controlling the opening and closing of the pipeline is preferably provided between the flushing water tank and the flushing water pump 71.

[0069] Further preferably, the high-pressure flushing circuit also includes a third overflow circuit connected between the outlet of the flushing water pump 71 and the flushing water tank, and the third overflow circuit is provided with a third safety valve 77 .

[0070] When the eleventh switch valve 76 is opened and the flushing water pump 71 is working, the third switch valve 721 is opened. After the flushing water flows out from the flushing water pump 71, it flows into the grouting pump 13 and the test unit of the first test loop in sequence through the first cleaning branch 72, and finally flows out from the test outlet of the test unit to achieve the purpose of cleaning the first test loop, thereby avoiding cement slurry from clogging the pipeline of the first test loop.

[0071] When the eleventh switch valve 76 is opened and the flushing water pump 71 is working, the fourth switch valve 731 is opened. After the flushing water flows out from the flushing water pump 71, it flows into the first mud branch 31, the mixer 33 and the test unit of the third test loop in sequence through the second cleaning branch 73, and finally flows out from the test outlet of the test unit of the third test loop and flows into the storage box 4, so as to achieve the purpose of cleaning the third test loop, thereby avoiding the mixed liquid containing cement slurry from clogging the pipeline of the third test loop.

[0072] When the pressure loss along the cement slurry is tested separately, in order to be able to recycle the cement slurry, on the basis of the above embodiment, the first test loop includes a second mud branch 14, one end of the second mud branch 14 is connected to the test outlet of the first test loop, and the other end of the second mud branch 14 is connected to the cement slurry tank 11 of the first test loop, and the second mud branch 14 is provided with a fifth switch valve 141 for controlling the on and off of the second mud branch 14.

[0073] That is to say, after coming out of the test outlet of the first test loop, two parallel branches are led out, namely the first mud branch 31 and the second mud branch 14. When the first switch valve 311 on the first mud branch 31 is closed and the fifth switch valve 141 on the second mud branch 14 is opened, the pressure loss along the cement slurry can be tested separately, so that the cement slurry coming out of the test outlet of the first test loop can flow back to the cement slurry tank 11 through the second mud branch 14, thereby realizing the recycling of cement slurry and avoiding waste of test materials.

[0074] Taking into account the problem of recovering cleaning water when the high-pressure flushing circuit cleans the first test circuit, on the basis of the above embodiment, the high-pressure flushing circuit includes a third cleaning branch 74, one end of the third cleaning branch 74 is connected to the second mud branch 14, and 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 a sixth switch valve 741; the second mud branch 14 is provided with a seventh switch valve 142 from the connection point between it and the third cleaning branch 74 to the cement slurry tank 11.

[0075] That is to say, in this embodiment, a branch is led out from the middle part of the second mud branch 14, namely, the third cleaning branch 74. When the first test loop is cleaned, the seventh switch valve 142 is closed and the sixth switch valve 741 is opened, so that the cleaning water flowing out of the test outlet of the first test loop flows into the third cleaning branch 74 through the second mud branch 14, and finally flows into the storage box 4 through the third cleaning branch 74, that is, the storage box 4 can also be used to collect waste water after cleaning the pipeline.

[0076] Obviously, when the first test loop is tested, the sixth switch valve 741 is closed and the seventh switch valve 142 is opened, so that the cement slurry flowing out of the test outlet of the first test loop flows into the cement slurry tank 11 through the second slurry branch 14 .

[0077] When the pressure loss along the water glass is tested separately, in order to be able 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, and 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 and off of the second water glass branch 24.

[0078] That is to say, after coming out of the test outlet of the second test loop, two parallel branches are led out, namely the first water glass branch 32 and the second water glass branch 24. 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 pressure loss along the water glass can be tested separately, so that the water glass coming out of the test outlet of the second test loop can flow back to the water glass tank 21 through the second water glass branch 24, thereby realizing the recycling of water glass and avoiding the waste of test materials.

[0079] It should be noted that, in the above-mentioned embodiments, the present invention does not limit the specific structures of 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, the eleventh switch valve 76, etc., as long as they can control the on-off of the pipeline. For example, each of the above-mentioned switch valves can be a pneumatic ball valve, a hydraulic ball valve, an electric ball valve, a manual ball valve, a knife gate valve or a butterfly valve.

[0080] As a preferred scheme, on the basis of the above-mentioned embodiment, 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 can be automatically controlled by the control device of the grouting pipeline pressure loss test system, thereby making the overall automation degree of the grouting pipeline pressure loss test system high, and then the test personnel can complete the experiment in the control room after preparing the required slurry.

[0081] Based on the above embodiment, the first test loop, the second test loop, the first mud branch 31 and the first water glass branch 32 are all provided with a flow meter 9 to test the pressure loss along the cement slurry and water glass at different flow rates. At the same time, the pressure loss along the mixed liquid with different proportions can be tested.

[0082] It should also be noted that, in this specification, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0083] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0084] The above is a detailed introduction to the grouting pipeline along-the-line pressure loss test system provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A grouting pipeline along-the-way pressure loss testing system, characterized in that: include: A first test loop for detecting the pressure loss along the cement slurry; A second test circuit for detecting the pressure loss along the water glass; a first mud branch (31) connected to the test outlet of the first test circuit, the first mud branch (31) being provided with a first switch valve (311) for controlling the on-off of the first mud branch (31); a first water glass branch (32) connected to the test outlet of the second test circuit, the first water glass branch (32) being provided with a second switch valve (321) for controlling the on-off of the first water glass branch (32); A third test circuit for detecting the pressure loss along the mixed liquid of the cement slurry and the water glass, wherein the test inlet of the third test circuit is provided with a mixer (33), the first slurry branch (31) and the first water glass branch (32) are respectively connected to the two inlets of the mixer (33), and the test outlet of the third test circuit is connected to a storage box (4); The first test loop comprises a cement slurry tank (11), a grouting pump (13) and a test unit, wherein the outlet of the cement slurry tank (11) is connected to the suction port of the grouting pump (13) via a pipeline, and the outlet of the grouting pump (13) is connected to the test inlet of the test unit via a pipeline, so that cement slurry is supplied through the cement slurry tank (11), and cement slurry of a preset pressure is provided to the test unit through the grouting pump (13), and the test unit is used to test the pressure loss of cement slurry along the way.

2. The grouting pipeline along-the-line pressure loss testing system according to claim 1 is characterized in that: The first test loop and the second test loop each comprise at least two first test units (5), each of the first test units (5) comprising a first inlet control valve (51), a first outlet control valve (52), and an elbow (53), a first hard pipe (54) and a first soft pipe (55) which are arranged in series between the first inlet control valve (51) and the first outlet control valve (52), and both ends of the elbow (53), both ends of a preset length section of the first hard pipe (54) and both ends of a preset length section of the first soft pipe (55) are provided with first pressure measuring points (56) for detecting pressure.

3. The grouting pipeline along-the-line pressure loss testing system according to claim 2 is characterized in that: The third test circuit comprises at least two second test units (6), each of the second test units (6) comprises 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 arranged in series, and both ends of a preset length section of the second hard pipe (63) and both ends of a preset length section of the second soft pipe (64) are provided with second pressure measuring points (65) for detecting pressure.

4. The grouting pipeline along-the-line pressure loss testing system according to claim 3 is characterized in that: The first pressure measuring point (56) and the second pressure measuring point (65) both include: A pressure sensor (82) for real-time feedback of pressure values; A pressure gauge (81) is used to display the pressure value.

5. The grouting pipeline along-the-line pressure loss testing system according to any one of claims 1 to 4, characterized in that: It also includes a high-pressure flushing circuit for cleaning the inner wall of the pipeline of the first test circuit and the third test circuit, and the high-pressure flushing circuit includes: A first cleaning branch (72) connected between the outlet of the flushing water pump (71) of the high-pressure flushing circuit and the inlet of the grouting pump (13) of the first test circuit, wherein the first cleaning branch (72) is provided with a third switch valve (721); A second cleaning branch (73) is connected between the outlet of the flushing water pump (71) and the first mud branch (31), and the second cleaning branch (73) is provided with a fourth switch valve (731).

6. The grouting pipeline along-the-line pressure loss testing system according to claim 5 is characterized in that: The first test loop comprises a second mud branch (14), one end of the second mud branch (14) is connected to the test outlet of the first test loop, the other end of the second mud branch (14) is connected to the cement slurry tank (11) of the first test loop, and the second mud branch (14) is provided with a fifth switch valve (141).

7. The grouting pipeline along-the-line pressure loss testing system according to claim 6 is characterized in that: The high-pressure flushing circuit includes a third cleaning branch (74), one end of the third cleaning branch (74) is connected to the second mud branch (14), and 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 a sixth switch valve (741); the second mud branch (14) is provided with a seventh switch valve (142) from the connection point between it and the third cleaning branch (74) to the cement slurry tank (11).

8. The grouting pipeline along-the-line pressure loss testing system according to claim 7, characterized in that: The second test circuit comprises a second water glass branch (24), one end of the second water glass branch (24) is connected to a test outlet of the second test circuit, the other end of the second water glass branch (24) is connected to a water glass tank (21) of the second test circuit, and the second water glass branch (24) is provided with an eighth switch valve (241).

9. The grouting pipeline along-the-line pressure loss testing system according to claim 8, characterized in that: 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 the opening and closing of the automatic control valves can be automatically controlled by the control device of the grouting pipeline pressure loss test system.

10. The grouting pipeline along-the-line pressure loss testing system according to claim 5, characterized in that: The first test loop, the second test loop, the first mud branch (31) and the first water glass branch (32) are all provided with flow meters (9).

Images