Coarse-grained soil consolidation apparatus

Abstract

The utility model provides a coarse-grained soil consolidation apparatus, which relates to the technical field of soil test instruments, and comprises a plurality of consolidation apparatus bodies connected in series and an oil-way pipeline, a sealing tee joint is connected between the consolidation apparatus bodies and the oil-way pipeline, and the sealing tee joint comprises a lining framework, a sealing shell, a limiting ring, a sealing ring and a sliding sealing table, the oil way pipeline is arranged on the lining framework in a sleeving mode, the side, back on to the sealing ring, of the sliding sealing table is arranged to be an extrusion inclined face, a sealing cavity is formed in the sealing shell, and the side wall of one side of the sealing cavity abuts against the extrusion inclined face. According to the utility model, the sealing shell extrudes the extrusion inclined surface of the sliding sealing table, so that the sliding sealing table axially extrudes the sealing ring, and the sealing ring radially expands to hermetically extrude the oil-way pipeline on the lining framework, so that a good sealing effect is achieved, leakage of the oil-way pipeline is avoided, and stable pressure of a consolidation test is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of geotechnical testing instruments, in particular to a coarse-grained soil consolidation instrument. Background Art

[0002] The coarse-grained soil consolidation instrument is used to determine the compression properties of soil under different load conditions. It can perform normal slow consolidation tests and rapid consolidation tests, and determine the initial consolidation pressure and consolidation coefficient. Usually on the construction site, it is necessary to test coarse-grained soil samples at multiple sampling points. Dozens or hundreds of tests are required in the overall test, and the consolidation test usually reads the test data once every hour. The total test duration is more than 24 hours. It is very time-consuming to conduct dozens of tests in sequence. Therefore, a multi-joint consolidation instrument such as a 12-joint consolidation instrument or a 36-joint consolidation instrument is usually used for simultaneous testing. The multi-joint consolidation instrument usually uses the same loading cylinder to connect through a series of oil pipelines to ensure the consistency of multiple groups of tests. However, the series pipeline of the multi-joint consolidation instrument requires multiple three-way joints. The existing three-way joints are usually directly plugged into the end of the oil pipeline, with poor sealing effect. It is easy to leak in the high-pressure oil circuit with a long span. Leakage will cause the pressure in the oil pipeline to decrease, that is, the pressure on the coarse-grained soil sample will decrease, affecting the accuracy of the test results. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a coarse-grained soil consolidation instrument, which solves the problems raised in the above-mentioned background technology.

[0005] (II) Technical solution

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A coarse-grained soil consolidation instrument comprises a plurality of consolidation instrument bodies and oil pipelines connected in series, wherein a sealing tee is connected between the plurality of consolidation instrument bodies and the oil pipelines, wherein the sealing tee comprises an inner lining skeleton, a sealing shell, a limit ring, a sealing ring and a sliding sealing platform, wherein the oil pipeline is sleeved on the inner lining skeleton, and the sliding sealing platform, the sealing ring and the limit ring are sleeved on the oil pipeline in sequence, wherein the side of the sliding sealing platform facing away from the sealing ring is arranged as an extrusion inclined surface, and a sealing cavity is arranged inside the sealing shell, wherein a side wall of one side of the sealing cavity abuts against the extrusion inclined surface, and a side wall of the other side of the sealing cavity abuts against a side of the limit ring facing away from the sealing ring.

[0008] Preferably, the sealing housing comprises sealing half shells which are hinged and symmetrically arranged with each other, the sealing half shells are provided with connecting plates, the connecting plates are provided with threaded holes, and sealing bolts are connected between the connecting plates of the two sealing half shells.

[0009] Preferably, a circumferential ring is provided on the side of the sliding sealing platform facing the sealing ring, and the circumferential ring is sleeved on the outer side of the sealing ring.

[0010] Preferably, a sealing groove is provided on the inner liner frame, and the sealing ring sleeve is positioned opposite to the sealing groove.

[0011] Preferably, the oil pipeline is connected to a pressure compensation mechanism, which includes a compensation cylinder body, a sliding disc and an oil slide rod. The compensation cylinder body includes a cylinder wall and an oil cylinder wall integrally formed with the cylinder wall. Sealing oil rings are provided between the cylinder wall and the oil cylinder wall. The sliding disc is slidingly connected in the cylinder wall. One end of the oil slide rod is fixed on the sliding disc, and the other end is slidingly penetrated in the oil cylinder wall. The oil cylinder wall is connected to the oil pipeline, and the cylinder wall is connected to a pressure compensation air pump.

[0012] Preferably, a pressure sensor is provided on the inner wall of the cylinder wall, and the pressure sensor is electrically connected to the pressure-compensating air pump.

[0013] (III) Beneficial effects

[0014] The utility model provides a coarse-grained soil consolidation instrument. It has the following beneficial effects:

[0015] 1. In the utility model, a sealing tee is arranged in the oil pipeline, and the sealing half shells that are interlocked with each other are used to squeeze the extrusion slope of the sliding sealing platform arranged on the oil pipeline, so that the sliding sealing platform axially squeezes the sealing ring, and the sealing ring radially deforms to press the oil pipeline, thereby completing the sealing of the oil pipeline and the inner liner skeleton, reducing the possibility of leakage of the oil pipeline, ensuring the pressure stability of the consolidation instrument, and improving the accuracy of the test results.

[0016] 2. In the utility model, a pressure compensation mechanism is added to the oil pipeline. When the oil pipeline fluctuates, the air pressure in the cylinder wall can be increased or decreased by the pressure compensation air pump, so that the sliding disc slides left and right to adjust the oil pressure in the cylinder wall and keep the pressure in the oil pipeline stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a coarse-grained soil consolidation instrument of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the sealed tee in the utility model;

[0019] Figure 3 It is a cross-sectional view of the sealing tee in the utility model.

[0020] In the figure: 1. Consolidation instrument body; 2. Oil pipeline; 3. Sealing tee; 31. Lining frame; 32. Sealing shell; 33. Sealing ring; 34. Sliding sealing platform; 35. Limiting ring; 4. Connecting plate; 5. Compensating cylinder; 6. Circumferential ring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] The utility model provides a coarse-grained soil consolidation instrument.

[0023] like Figure 1-3 As shown, it includes several consolidation instrument bodies 1 and oil pipelines 2 connected in series, the oil pipelines 2 are connected to a hydraulic pump, and several of the consolidation instrument bodies 1 and the oil pipelines 2 are connected with sealing tees 3, the sealing tees 3 include an inner lining skeleton 31, a sealing shell 32, a limit ring 35, a sealing ring 33 and a sliding sealing platform 34, the oil pipeline 2 is sleeved on the inner lining skeleton 31, the sliding sealing platform 34, the sealing ring 33, and the limit ring 35 are sleeved on the oil pipeline 2 in sequence, the side of the sliding sealing platform 34 facing away from the sealing ring 33 is set as an extrusion slope, the sealing shell 32 includes sealing half shells that are hinged and symmetrically arranged with each other, the sealing half shells are provided with connecting plates 4, the connecting plates 4 are provided with threaded holes, the connecting plates 4 of the two sealing half shells are connected with sealing bolts, and the sealing half shells are provided with screw holes. A sealing groove is provided, and two of the sealing grooves are buckled to form a sealing cavity, the inner diameter of the sealing cavity is larger than the outer diameters of the sliding sealing platform 34, the sealing ring 33, and the limiting ring 35, so that the sliding sealing platform 34, the sealing ring 33, and the limiting ring 35 can slide freely in the sealing cavity, one side wall of the sealing cavity abuts on the extrusion inclined surface, and the other side wall of the sealing cavity abuts on the side of the limiting ring 35 facing away from the sealing ring 33, and the sliding sealing platform 34 is provided with a circumferential ring 6 on the side facing the sealing ring 33, and the circumferential ring 6 is sleeved on the outside of the sealing ring 33, and a sealing groove is provided on the inner lining skeleton 31, and the sealing ring 33 is sleeved at a position facing the sealing groove, the inner diameters of the sliding sealing platform 34 and the limiting ring 35 are equal to the inner diameter of the oil pipeline 2, and the inner diameter of the sealing ring 33 is smaller than the inner diameters of the sliding sealing platform 34 and the limiting ring 35.

[0024] It is further configured that the oil pipeline 2 is connected to a pressure compensation mechanism, and the pressure compensation mechanism includes a compensation cylinder body 5, a sliding disc and an oil circuit slide rod. The compensation cylinder body 5 includes a cylinder wall and an oil cylinder wall integrally formed with the cylinder wall, and a sealing oil ring is arranged between the cylinder wall and the oil cylinder wall. The sliding disc is slidingly connected in the cylinder wall, one end of the oil circuit slide rod is fixed on the sliding disc, and the other end is slidingly penetrated in the oil cylinder wall, the oil cylinder wall is connected to the oil pipeline 2, the cylinder wall is connected to a pressure compensation air pump, the inner wall of the cylinder wall is provided with a pressure sensor, and the pressure sensor is electrically connected to the pressure compensation air pump.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coarse-grained soil consolidation instrument, comprising a plurality of consolidation instrument bodies and oil pipelines connected in series, characterized in that: A sealing tee is connected between several of the consolidation instrument bodies and the oil pipeline. The sealing tee includes an inner lining frame, a sealing shell, a limit ring, a sealing ring and a sliding sealing platform. The oil pipeline is sleeved on the inner lining frame. The sliding sealing platform, the sealing ring and the limit ring are sequentially sleeved on the oil pipeline. The side of the sliding sealing platform facing away from the sealing ring is set as an extrusion slope. A sealing cavity is set inside the sealing shell. One side wall of the sealing cavity abuts against the extrusion slope, and the other side wall of the sealing cavity abuts against the side of the limit ring facing away from the sealing ring.

2. A coarse-grained soil consolidation instrument according to claim 1, characterized in that: The sealing shell comprises sealing half shells which are hinged and symmetrically arranged with each other, the sealing half shells are provided with connecting plates, the connecting plates are provided with threaded holes, and sealing bolts are connected between the connecting plates of the two sealing half shells.

3. A coarse-grained soil consolidation instrument according to claim 2, characterized in that: A circumferential ring is arranged on one side of the sliding sealing platform facing the sealing ring, and the circumferential ring is sleeved on the outer side of the sealing ring.

4. A coarse-grained soil consolidation instrument according to claim 3, characterized in that: The inner liner frame is provided with a sealing groove, and the sealing ring sleeve is arranged at a position facing the sealing groove.

5. A coarse-grained soil consolidation instrument according to claim 4, characterized in that: The oil pipeline is connected to a pressure compensation mechanism, which includes a compensation cylinder body, a sliding disc and an oil slide rod. The compensation cylinder body includes a cylinder wall and an oil cylinder wall integrally formed with the cylinder wall. A sealing oil ring is provided between the cylinder wall and the oil cylinder wall. The sliding disc is slidingly connected in the cylinder wall. One end of the oil slide rod is fixed on the sliding disc, and the other end is slidingly penetrated in the oil cylinder wall. The oil cylinder wall is connected to the oil pipeline, and the cylinder wall is connected to a pressure compensation air pump.

6. A coarse-grained soil consolidation instrument according to claim 5, characterized in that: The inner wall of the cylinder wall is provided with a pressure sensor, and the pressure sensor is electrically connected to the pressure compensation air pump.

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