Test sleeve for water pumping test and test device

Abstract

The invention relates to a test casing pipe and a test device for a water pumping test, and relates to the technical field of hydrogeological measurement equipment, the test casing pipe comprises a test pipe arranged in a protective casing pipe, and the test pipe is used for placing a water pump; the floral tube is arranged at the lower end of the experiment tube, a plurality of through holes are uniformly formed in the wall of the floral tube, a filter cartridge is detachably arranged on the inner side of the floral tube, and the diameter of the filter cartridge is smaller than that of the experiment tube; the precipitation tube is arranged at the lower end of the floral tube and is used for collecting particle precipitates of the filter cartridge. Due to the fact that the filter cartridge is detachably arranged on the inner side of the floral tube, and the diameter of the filter cartridge is smaller than that of the experiment tube, the filter cartridge can be taken out from the floral tube through the experiment tube on the premise that the experiment tube, the floral tube and the precipitation tube are not detached, the filter cartridge can be placed back into the floral tube through the experiment tube after the porosity or the wire winding distance of the filter cartridge is changed, and replacement is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogeological measurement equipment, and in particular to a test casing and a test device for a water pumping test. Background Art

[0002] In engineering construction, underground projects such as tunnels, bridge anchors, foundation pits, etc. are often greatly affected by hydrogeological conditions. In order to scientifically and rationally design and construct the project and ensure the safety of underground projects, the key is to obtain accurate hydrogeological parameters. At present, pumping test is the most widely used means to obtain hydrogeological parameters. The selection of filters during the pumping test is often the key to the success of the test. Appropriate filters should be used according to different aquifers and their particle sizes.

[0003] In the prior art, large-diameter hydrological boreholes in large-scale engineering pumping tests mostly use gravel-filled filters, and the test results are relatively accurate, but the operation process is complicated, the cost is extremely high, and it is affected by the external environment such as the site, making it difficult to implement. In order to enhance operability and save costs, small projects generally use simple pumping tests. Whether the simple pumping test uses a skeleton filter or a wire-wrapped filter, the porosity of the filter, the wire-wrapped spacing, etc. can only be controlled according to the specifications to meet the requirements of the test stratum.

[0004] However, during the test, the filter may need to be replaced due to the discrepancy between the actual formation permeability and the empirical permeability in the specification. The existing filter replacement requires the removal of all the pipes in the hole, which is time-consuming and labor-intensive, affecting the test efficiency. Summary of the invention

[0005] The present application provides a test casing and a test device for a pumping test, which can solve the problem in the prior art that during the test process, the filter may need to be replaced due to the difference between the actual formation permeability and the standard experience. The existing filter replacement requires the removal of all the pipes in the hole, which is time-consuming and labor-intensive and affects the test efficiency.

[0006] In a first aspect, an embodiment of the present application provides a test casing for a pumping test, comprising:

[0007] An experimental tube, which is used to be arranged in the protective casing, and a water pump is placed in the experimental tube;

[0008] A flower tube, which is arranged at the lower end of the experimental tube, a plurality of through holes are evenly arranged on the wall of the flower tube, a filter cartridge is detachably provided on the inner side of the flower tube, and the diameter of the filter cartridge is smaller than the diameter of the experimental tube;

[0009] A sedimentation tube is arranged at the lower end of the flower tube and is used to collect the particle sediment of the filter cartridge.

[0010] In one embodiment, a sealing pressure ring is further provided in the floral tube, and the sealing pressure ring comprises:

[0011] A support cylinder, the outer side of which abuts against the inner wall of the flower tube and is located at the upper end of the filter cylinder;

[0012] A sealing rubber plug is wrapped on the support tube, the cross section of the sealing rubber plug is annular, and the sealing rubber plug is located between the inner wall of the lower part of the flower tube or the experimental tube and the filter tube.

[0013] In one embodiment, the flower tube is divided into a first tube section, a second tube section and a third tube section, the tube wall thickness of the second tube section is greater than the tube wall thickness of the first tube section and the third tube section, a plurality of the through holes are evenly arranged on the tube wall of the second tube section, the upper end of the second tube section is a bell mouth, the support tube includes an annular section, a bell mouth section and a cylindrical section connected in sequence, the outer side of the annular section abuts against the inner wall of the first tube section, the bell mouth section is used to be clamped at the bell mouth, the cylindrical section extends between the lower inner wall of the flower tube and the filter tube, and the sealing rubber plug is wrapped on the bell mouth section and the cylindrical section.

[0014] In one embodiment, a lifting ring is provided on the upper side of the annular segment.

[0015] In one embodiment, the support cylinder is a metal part.

[0016] In one embodiment, a bottom supporting joint is detachably provided at the lower end of the flower tube, and the bottom supporting joint is used to connect the flower tube with a sedimentation tube. A cross mounting steel bar and a rubber ring arranged along the circumference are provided in the bottom supporting joint. The cross mounting steel bar abuts against the lower end of the filter cylinder for supporting the filter cylinder, and the rubber ring is located between the inner wall of the flower tube and the filter cylinder.

[0017] In one embodiment, the filter cylinder includes a frame cylinder and a filter inner cylinder disposed in the frame cylinder, the frame cylinder is placed on the cross mounting steel bars, and the outer diameter of the filter inner cylinder matches the inner diameter of the frame cylinder.

[0018] In a second aspect, the present application also provides a test device for a pumping test, which includes:

[0019] Protective sleeve;

[0020] An experimental tube, which is arranged in the protective casing, and the experimental tube is used to place a water pump;

[0021] A flower tube, which is arranged at the lower end of the experimental tube, a plurality of through holes are evenly arranged on the wall of the flower tube, a filter cartridge is detachably provided on the inner side of the flower tube, and the diameter of the filter cartridge is smaller than the diameter of the experimental tube;

[0022] A sedimentation pipe, which is arranged at the lower end of the flower tube and is used to collect the particle sediment of the filter cartridge;

[0023] A triangular weir is connected to the water pump through a water pipe and is used to obtain flow from the water pumped by the water pump.

[0024] In one embodiment, the triangular weir comprises:

[0025] A triangular weir body connected to the water pipe, with a flow hole opened at the lower part of the side wall, and a scale on the side wall of the triangular weir body;

[0026] The display tube comprises a display segment and a communication segment, wherein the display segment is located on one side of the scale, and the communication segment is communicated with the flow hole.

[0027] In one embodiment, a double water level gauge is further included, one end of which is located between the protection sleeve and the experimental tube, and the other end of which is located inside the protection sleeve, for measuring the water level difference between the inside and outside of the protection sleeve.

[0028] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0029] When using the test casing for water pumping test, the test tube is set in the protective casing, the test tube is used to place a water pump, the water pump is used to pump water in the test tube into the triangular weir, the flower tube is set at the lower end of the test tube, a plurality of through holes are evenly arranged on the wall of the flower tube, a filter cartridge is detachably provided on the inner side of the flower tube, the diameter of the filter cartridge is smaller than the diameter of the test tube, and a sedimentation tube is set at the lower end of the flower tube, which is used to collect the particle precipitation of the filter cartridge. Since the filter cartridge is detachably provided on the inner side of the flower tube, and the diameter of the filter cartridge is smaller than the diameter of the test tube, the filter cartridge can be taken out from the flower tube through the test tube without disassembling the test tube, the flower tube and the sedimentation tube, and after changing the porosity of the filter cartridge or the wire winding spacing, the filter cartridge is put back into the flower tube through the test tube, which is convenient for replacement, and solves the problem that the filter needs to be replaced due to the gap between the actual formation and the standard experience permeability during the test in the prior art. The existing filter replacement requires all the pipes in the hole to be removed, which is time-consuming and labor-intensive, and affects the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 The present invention is a schematic structural diagram of a test device for a water pumping test embodiment of the present invention.

[0032] Figure 2 The present invention is a schematic structural diagram of a flower tube and a sedimentation tube in an embodiment of a test casing for a water pumping test.

[0033] Figure 3 The present invention is a schematic structural diagram of a sealing pressure ring in an embodiment of a test casing for a water pumping test.

[0034] Figure 4 The figure is a bottom view structural schematic diagram of a sealing pressure ring in an embodiment of a test casing for a water pumping test of the present invention.

[0035] Figure 5 The present invention is a schematic structural diagram of a bottom support joint in an embodiment of a test casing for a water pumping test.

[0036] Figure 6 The figure is a top view of the structure of a bottom support joint in an embodiment of a test casing for a water pumping test of the present invention.

[0037] Figure 7 The present invention is a schematic structural diagram of a flower tube in an embodiment of a test casing for a water pumping test.

[0038] Figure 8 It is a schematic structural diagram of a skeleton tube in an embodiment of a test casing for a pumping test of the present invention.

[0039] Fig. 9 It is a structural schematic diagram of a form of a filter inner cylinder in an embodiment of a test sleeve for a water pumping test of the present invention.

[0040] Fig.10 It is a schematic structural diagram of another form of a filter inner cylinder in an embodiment of a test sleeve for a water pumping test of the present invention.

[0041] Fig.11 It is a structural schematic diagram of a triangular weir in an embodiment of a test device for a pumping test of the present invention.

[0042] In the figure: 1. experimental tube; 2. protective sleeve; 3. water pump; 4. flower tube; 41. through hole; 42. first pipe section; 43. second pipe section; 44. third pipe section; 5. filter cylinder; 51. skeleton cylinder; 511. skeleton lifting ring; 52. filter inner cylinder; 6. sealing pressure ring; 61. support cylinder; 611. ring section; 612. bell section; 613. columnar section; 62. sealing rubber plug; 63. lifting ring; 7. bottom support joint; 71. cross mounting steel bar; 72. rubber ring; 8. triangular weir; 81. triangular weir body; 811. flow hole; 82. display tube; 821. display section; 822. connecting section; 9. water pipe; 10. sedimentation pipe; 20. double water level gauge. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0044] The embodiments of the present application provide a test casing and a test device for a pumping test, which can solve the problem in the prior art that during the test process, the filter may need to be replaced due to a discrepancy between the actual formation permeability and the empirical permeability in the specification. The existing filter replacement requires all the pipes in the hole to be removed, which is time-consuming and labor-intensive and affects the test efficiency.

[0045] like Figure 1 , Figure 2 , Figure 5 and Figure 7 As shown, on the one hand, the present application provides a test casing for a pumping test, which comprises:

[0046] An experimental tube 1, which is used to be arranged in a protective casing 2, and a water pump 3 is placed in the experimental tube 1;

[0047] A flower tube 4 is arranged at the lower end of the experimental tube 1. A plurality of through holes 41 are evenly arranged on the wall of the flower tube 4. A filter cartridge 5 is detachably provided inside the flower tube 4. The diameter of the filter cartridge 5 is smaller than the diameter of the experimental tube 1.

[0048] The sedimentation pipe 10 is arranged at the lower end of the flower tube 4 and is used to collect the particle sediment of the filter cartridge 5 .

[0049] When using the test sleeve for water pumping test, the test tube 1 is set in the protective sleeve 2, and the test tube 1 is used to place the water pump 3, which is used to pump the water in the test tube 1 into the triangular weir 8. The flower tube 4 is set at the lower end of the test tube 1, and a plurality of through holes 41 are evenly arranged on the wall of the flower tube 4. A filter cartridge 5 is detachably provided on the inner side of the flower tube 4, and the diameter of the filter cartridge 5 is smaller than the diameter of the test tube 1. The sedimentation tube 10 is set at the lower end of the flower tube 4, and is used to collect the particle sedimentation of the filter cartridge 5. Since a filter cartridge 5 is detachably provided on the inner side of the flower tube 4, and the diameter of the filter cartridge 5 is smaller than that of the experimental tube 1, the filter cartridge 5 can be taken out from the flower tube 4 through the experimental tube 1 without disassembling the experimental tube 1, the flower tube 4 and the sedimentation tube 10. After changing the porosity or the wire winding spacing of the filter cartridge 5, the filter cartridge 5 can be put back into the flower tube 4 through the experimental tube 1, which is convenient for replacement. This solves the problem in the prior art that the filter may need to be replaced during the test due to the gap between the actual formation and the permeability of the standard experience. The existing filter replacement requires the removal of all the pipes in the hole, which is time-consuming and labor-intensive and affects the test efficiency.

[0050] In this example, the protective sleeve 2 is caliber The steel casing, the flower tube 4 and the experimental tube 1 are made of the same material, both with a diameter of Steel casing, through hole 41 is diameter holes.

[0051] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some optional embodiments, a sealing pressure ring 6 is further provided in the floral tube 4, and the sealing pressure ring 6 includes:

[0052] The support cylinder 61, the outer side of which abuts against the inner wall of the flower tube 4, and is located at the upper end of the filter cylinder 5;

[0053] The sealing rubber plug 62 is wrapped around the support tube 61 . The cross section of the sealing rubber plug 62 is annular. The sealing rubber plug 62 is located between the inner wall of the lower part of the flower tube 4 or the experimental tube 1 and the filter tube 5 .

[0054] In this embodiment, a sealing pressure ring 6 is further provided in the flower tube 4, and the sealing pressure ring 6 includes a supporting tube 61 and a sealing rubber plug 62, wherein the outer side of the supporting tube 61 abuts against the inner wall of the flower tube 4 and is located at the upper end of the filter tube 5, and the sealing rubber plug 62 is wrapped on the supporting tube 61, and the cross-section of the sealing rubber plug 62 is annular. The sealing rubber plug 62 is located between the inner wall of the lower part of the flower tube 4 or the experimental tube 1 and the filter tube 5, and is used to block the water between the inner wall of the flower tube 4 and the filter tube 5 to prevent the water from being pumped out by the water pump 3 without being filtered by the filter tube 5, thereby affecting the accuracy of the test.

[0055] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, in some optional embodiments, the flower tube 4 is divided into a first tube segment 42, a second tube segment 43 and a third tube segment 44, the tube wall thickness of the second tube segment 43 is greater than the tube wall thickness of the first tube segment 42 and the third tube segment 44, a plurality of through holes 41 are evenly arranged on the tube wall of the second tube segment 43, the upper end of the second tube segment 43 is a bell mouth, the support cylinder 61 includes an annular segment 611, a bell mouth segment 612 and a cylindrical segment 613 connected in sequence, the outer side of the annular segment 611 abuts against the inner wall of the first tube segment 42, the bell mouth segment 612 is used to be clamped at the bell mouth, the cylindrical segment 613 extends between the lower inner wall of the flower tube 4 and the filter cylinder 5, and the sealing rubber plug 62 is wrapped on the bell mouth segment 612 and the cylindrical segment 613.

[0056] In this embodiment, the flower tube 4 is divided into a first tube section 42, a second tube section 43 and a third tube section 44. The tube wall thickness of the second tube section 43 is greater than the tube wall thickness of the first tube section 42 and the third tube section 44. A plurality of through holes 41 are evenly arranged on the tube wall of the second tube section 43. The upper end of the second tube section 43 is a bell mouth. The support tube 61 specifically includes an annular section 611, a bell mouth section 612 and a cylindrical section 613 which are connected in sequence. The outer side of the annular section 611 abuts against the inner wall of the first tube section 42. The bell mouth section 612 is used to be clamped at the bell mouth. The cylindrical section 613 extends between the lower inner wall of the flower tube 4 and the filter tube 5. The sealing rubber plug 62 is wrapped on the bell mouth section 612 and the cylindrical section 613, so as to facilitate the placement of the sealing pressure ring 6 at the set position and improve the sealing effect.

[0057] like Figure 3 As shown, in some optional embodiments, a lifting ring 63 is provided on the upper side of the annular segment 611 .

[0058] In this embodiment, a lifting ring 63 is provided on the upper side of the annular segment 611 to facilitate taking out the sealing pressure ring 6 from the experimental tube 1 and improve the efficiency of replacing the filter cartridge 5 .

[0059] In some optional embodiments, the support tube 61 is made of metal.

[0060] In this embodiment, the support tube 61 is a metal part, which improves the overall quality of the sealing pressure ring 6, facilitates the placement of the sealing pressure ring 6 at a set position, and prevents the buoyancy of water from affecting the sealing effect of the sealing pressure ring 6.

[0061] like Figure 1 , Figure 2 , Figure 5 and Figure 6As shown, in some optional embodiments, a bottom supporting joint 7 is detachably provided at the lower end of the flower tube 4, and the bottom supporting joint 7 is used to connect the flower tube 4 with the sedimentation tube 10. A cross mounting steel bar 71 and a rubber ring 72 arranged along the circumferential direction are provided in the bottom supporting joint 7. The cross mounting steel bar 71 abuts against the lower end of the filter cartridge 5 for supporting the filter cartridge 5, and the rubber ring 72 is located between the inner wall of the flower tube 4 and the filter cartridge 5.

[0062] In this embodiment, a bottom supporting joint 7 is detachably provided at the lower end of the flower tube 4, and the bottom supporting joint 7 is used to connect the flower tube 4 and the sedimentation tube 10. A cross mounting steel bar 71 and a rubber ring 72 arranged along the circumferential direction are provided in the bottom supporting joint 7. The cross mounting steel bar 71 abuts against the lower end of the filter cartridge 5 to support the filter cartridge 5. The rubber ring 72 is located between the inner wall of the flower tube 4 and the filter cartridge 5 to seal the water between the inner wall of the flower tube 4 and the filter cartridge 5 to prevent the water from being pumped out by the water pump 3 without being filtered by the filter cartridge 5, thereby affecting the accuracy of the test.

[0063] like Figure 1 , Figure 8 , Fig. 9 and Fig.10 As shown, in some optional embodiments, the filter cylinder 5 includes a skeleton cylinder 51 and a filter inner cylinder 52 disposed in the skeleton cylinder 51 , the skeleton cylinder 51 is placed on a cross mounting steel bar 71 , and the outer diameter of the filter inner cylinder 52 matches the inner diameter of the skeleton cylinder 51 .

[0064] In this embodiment, the structure of the filter cartridge 5 is specifically described. The filter cartridge 5 includes a skeleton cartridge 51 and a filter inner cartridge 52 disposed in the skeleton cartridge 51. The skeleton cartridge 51 is placed on a cross mounting steel bar 71. The outer diameter of the filter inner cartridge 52 matches the inner diameter of the skeleton cartridge 51, so that the filter inner cartridge 52 can be replaced easily.

[0065] In this example, the filter inner cylinder 52 can be adjusted by adjusting the porosity or the wire winding spacing, and the filter inner cylinder 52 can also be formed by combining two filter cylinders. The skeleton cylinder 51 is provided with a skeleton lifting ring 511, which is convenient for lifting the skeleton cylinder 51 from the experimental tube 1 to the flower tube 4. The filter inner cylinder 52 is placed into the skeleton cylinder 51 from above.

[0066] like Figure 1 , Figure 2 , Figure 5 and Figure 7 As shown, on the other hand, the present application also provides a test device for a pumping test, which comprises:

[0067] Protective sleeve 2;

[0068] An experimental tube 1 is arranged in a protective casing 2, and a water pump 3 is placed in the experimental tube 1;

[0069] A flower tube 4 is arranged at the lower end of the experimental tube 1. A plurality of through holes 41 are evenly arranged on the wall of the flower tube 4. A filter cartridge 5 is detachably provided inside the flower tube 4. The diameter of the filter cartridge 5 is smaller than the diameter of the experimental tube 1.

[0070] A sedimentation pipe 10 is arranged at the lower end of the flower tube 4 and is used to collect the particle sediment of the filter cartridge 5;

[0071] The triangular weir 8 is connected to the water pump 3 via a water pipe 9 and is used to obtain flow from the water pumped by the water pump 3 .

[0072] When using the test sleeve for water pumping test, the test tube 1 is set in the protective sleeve 2, and the test tube 1 is used to place the water pump 3, which is used to pump the water in the test tube 1 into the triangular weir 8. The flower tube 4 is set at the lower end of the test tube 1, and a plurality of through holes 41 are evenly arranged on the wall of the flower tube 4. A filter cartridge 5 is detachably provided on the inner side of the flower tube 4, and the diameter of the filter cartridge 5 is smaller than the diameter of the test tube 1. The sedimentation tube 10 is set at the lower end of the flower tube 4, and is used to collect the particle sedimentation of the filter cartridge 5. Since a filter cartridge 5 is detachably provided on the inner side of the flower tube 4, and the diameter of the filter cartridge 5 is smaller than that of the experimental tube 1, the filter cartridge 5 can be taken out from the flower tube 4 through the experimental tube 1 without disassembling the experimental tube 1, the flower tube 4 and the sedimentation tube 10. After changing the porosity or the wire winding spacing of the filter cartridge 5, the filter cartridge 5 can be put back into the flower tube 4 through the experimental tube 1, which is convenient for replacement. This solves the problem in the prior art that the filter may need to be replaced during the test due to the gap between the actual formation and the permeability of the standard experience. The existing filter replacement requires the removal of all the pipes in the hole, which is time-consuming and labor-intensive and affects the test efficiency.

[0073] like Figure 1 and Fig.11 As shown, in some optional embodiments, the triangular weir 8 includes:

[0074] The triangular weir body 81 is connected to the water pipe 9, a flow hole 811 is opened at the lower part of the side wall, and a scale is provided on the side wall of the triangular weir body 81;

[0075] The display tube 82 includes a display segment 821 and a communication segment 822 . The display segment 821 is located on one side of the scale, and the communication segment 822 is communicated with the flow hole 811 .

[0076] In this embodiment, the structure of the triangular weir 8 is specifically described. The triangular weir 8 includes a triangular weir body 81 and a display tube 82, wherein the triangular weir body 81 is connected to the water pipe 9, a flow hole 811 is opened at the lower part of the side wall, and a scale is provided on the side wall of the triangular weir body 81. The display tube 82 includes a display segment 821 and a connecting segment 822. The display segment 821 is located on one side of the scale, and the connecting segment 822 is connected to the flow hole 811, so as to facilitate reading the liquid level of the triangular weir body 81 and thus obtain the flow value.

[0077] like Figure 1 As shown, in some optional embodiments, a double water level gauge 20 is also included, one end of which is located between the protective sleeve 2 and the experimental tube 1, and the other end is located inside the protective sleeve 2, for measuring the water level difference between the inside and outside of the protective sleeve 2.

[0078] In this embodiment, the test device for the pumping test also includes a double water level gauge 20, one end of which is located between the protective sleeve 2 and the test tube 1, and the other end is located inside the protective sleeve 2. The double water level gauge 20 is used to measure the water level difference between the inside and outside of the protective sleeve 2, which is convenient for intuitively reading the water level difference between the inside and outside of the protective sleeve 2.

[0079] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0080] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0081] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A test casing for a pumping test, characterized in that: include: An experimental tube (1) is used to be arranged in the protective casing (2), and a water pump (3) is placed in the experimental tube (1); A flower tube (4) is arranged at the lower end of the experimental tube (1), a plurality of through holes (41) are evenly arranged on the wall of the flower tube (4), a filter cartridge (5) is detachably provided inside the flower tube (4), and the diameter of the filter cartridge (5) is smaller than the diameter of the experimental tube (1); A sedimentation pipe (10) is arranged at the lower end of the flower tube (4) and is used to collect the particle sediment of the filter cartridge (5).

2. A test casing for a pumping test as claimed in claim 1, characterized in that: A sealing pressure ring (6) is also provided inside the flower tube (4), and the sealing pressure ring (6) comprises: A support cylinder (61), the outer side of which abuts against the inner wall of the flower tube (4) and is located at the upper end of the filter cylinder (5); A sealing rubber plug (62) is wrapped around the support tube (61), the cross section of the sealing rubber plug (62) is annular, and the sealing rubber plug (62) is located between the lower inner wall of the flower tube (4) or the experimental tube (1) and the filter tube (5).

3. A test casing for a pumping test as claimed in claim 2, characterized in that: The flower tube (4) is divided into a first tube section (42), a second tube section (43) and a third tube section (44); the tube wall thickness of the second tube section (43) is greater than the tube wall thickness of the first tube section (42) and the third tube section (44); a plurality of through holes (41) are evenly arranged on the tube wall of the second tube section (43); the upper end of the second tube section (43) is a bell mouth; the support cylinder (61) comprises an annular section (611), a bell mouth section (612) and a columnar section (613) which are connected in sequence; the outer side of the annular section (611) abuts against the inner wall of the first tube section (42); the bell mouth section (612) is used to be clamped at the bell mouth; the columnar section (613) extends between the lower inner wall of the flower tube (4) and the filter cylinder (5); and the sealing rubber plug (62) is wrapped around the bell mouth section (612) and the columnar section (613).

4. A test casing for a pumping test as claimed in claim 3, characterized in that: A lifting ring (63) is provided on the upper side of the annular segment (611).

5. A test casing for a pumping test as claimed in claim 2, characterized in that: The support tube (61) is a metal part.

6. A test casing for a pumping test as claimed in claim 1, characterized in that: The lower end of the flower tube (4) is detachably provided with a bottom support joint (7), the bottom support joint (7) being used to connect the flower tube (4) and the sedimentation tube (10), the bottom support joint (7) being provided with a cross mounting steel bar (71) and a rubber ring (72) arranged along the circumferential direction, the cross mounting steel bar (71) being in contact with the lower end of the filter cartridge (5) for supporting the filter cartridge (5), the rubber ring (72) being located between the inner wall of the flower tube (4) and the filter cartridge (5).

7. A test casing for a pumping test as claimed in claim 6, characterized in that: The filter cylinder (5) comprises a skeleton cylinder (51) and a filter inner cylinder (52) arranged in the skeleton cylinder (51); the skeleton cylinder (51) is placed on the cross mounting steel bars (71); and the outer diameter of the filter inner cylinder (52) matches the inner diameter of the skeleton cylinder (51).

8. A test device for a pumping test, characterized in that: include: Protective sleeve (2); An experimental tube (1), which is arranged in the protective sleeve (2), and a water pump (3) is placed in the experimental tube (1); A flower tube (4) is arranged at the lower end of the experimental tube (1), a plurality of through holes (41) are evenly arranged on the wall of the flower tube (4), a filter cartridge (5) is detachably provided inside the flower tube (4), and the diameter of the filter cartridge (5) is smaller than the diameter of the experimental tube (1); A sedimentation pipe (10), which is arranged at the lower end of the flower tube (4) and is used to collect the particle sediment of the filter cartridge (5); A triangular weir (8) is connected to the water pump (3) via a water pipe (9) and is used to obtain flow from the water pumped by the water pump (3).

9. A test device for a water pumping test as claimed in claim 8, characterized in that: The triangular weir (8) comprises: A triangular weir body (81) connected to the water pipe (9), a flow hole (811) is provided at the lower part of the side wall, and a scale is provided on the side wall of the triangular weir body (81); The display tube (82) comprises a display segment (821) and a communication segment (822), wherein the display segment (821) is located on one side of the scale, and the communication segment (822) is communicated with the flow hole (811).

10. A test device for a water pumping test as claimed in claim 8, characterized in that: It also comprises a double water level gauge (20), one end of which is located between the protective sleeve (2) and the experimental tube (1), and the other end of which is located inside the protective sleeve (2), and is used to measure the water level difference between the inside and outside of the protective sleeve (2).

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