Testing device for testing adhesion amount of shield synchronous grouting slurry pipeline

Abstract

The utility model discloses a testing device for testing the adhesion amount of a shield synchronous grouting slurry pipeline. The testing device comprises a driving assembly, the slurry storage assembly comprises a slurry storage tank connected with the driving device through a pipeline, a piston arranged in the slurry storage tank and a piston rod arranged in the slurry storage tank in a penetrating mode, and one end of the piston rod is connected with the piston; under the action of the driving device, the piston does piston motion in the slurry storage tank body along the axial direction of the slurry storage tank body; the slurry storage cover is detachably connected with the slurry storage tank; a pressure relief hole is formed in the slurry storage cover; and the detection assembly is connected with the slurry storage cover. The device has the beneficial effects that the slurry adhesion amount can be evaluated, and the test device is simple in structure, simple in principle and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of synchronous grouting slurry performance test for tunnel construction, in particular to a test device for testing the adhesion amount of synchronous grouting slurry pipeline for shield construction. Background Art

[0002] In underground engineering construction, shield construction is widely used due to its high degree of mechanization, high safety and low environmental impact. However, due to the difference in diameter between the cutterhead and the segment, there will be a gap between the stratum and the tunnel. Grouting behind the wall is an important construction step to fill this gap in the stratum, control ground settlement and ensure tunnel stability. Synchronous grouting is an advanced method of grouting behind the wall during the shield tunneling process.

[0003] For synchronous grouting slurry, it is required to quickly solidify after entering the formation, combine with the formation as soon as possible, and fill the gap at the shield tail. The synchronous grouting slurry currently used is mostly inert mortar. Due to the presence of fine aggregate, it generally has a high viscosity and is easy to adhere to the grouting pipeline, causing pipeline blockage. In addition, the emergence of various high-viscosity grouting materials such as cement-water glass double liquid slurry and external accelerated setting agent slurry also puts forward higher requirements on the viscosity effect between the slurry and the pipeline. Therefore, a test device is urgently needed to test the viscosity effect between the slurry and the pipeline to avoid slurry blocking the pipeline. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the above problems or problems existing in the prior art, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a test device for testing the adhesion amount of shield synchronous grouting slurry pipeline, which can evaluate the viscosity effect between the slurry and the pipeline.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a test device for testing the adhesion amount of shield synchronous grouting slurry pipeline, which includes a driving component;

[0008] The slurry storage assembly comprises a slurry storage tank connected to the driving device through a pipeline, a piston arranged in the slurry storage tank, and a piston rod penetrating the slurry storage tank and connected to the piston at one end; the piston performs piston motion along its axial direction in the slurry storage tank body under the action of the driving device;

[0009] A slurry storage cover is detachably connected to the slurry storage tank; a pressure relief hole is provided on the slurry storage cover;

[0010] A detection component is connected to the slurry storage cover.

[0011] As a preferred solution of the test device for testing the adhesion amount of shield synchronous grouting slurry pipeline described in the utility model, the detection component includes a flow pipeline connected to the slurry storage cover, a pipeline valve arranged on the flow pipeline, a front flow meter arranged on one side of the pipeline valve, and a rear flow meter arranged on one side of the pipeline valve of the front flow meter, and a certain distance is preset between the front flow meter and the rear flow meter.

[0012] As a preferred solution of the test device for testing the adhesion amount of shield synchronous grouting slurry pipeline described in the utility model, a sealing ring is arranged between the piston and the piston rod and the slurry storage tank.

[0013] As a preferred solution of the test device for testing the adhesion amount of shield synchronous grouting slurry pipeline described in the utility model, wherein: the slurry storage cover is threadedly connected to the slurry storage tank.

[0014] As a preferred solution of the test device for testing the adhesion amount of shield synchronous grouting slurry pipeline described in the utility model, wherein: the driving component is a piston air compressor.

[0015] As a preferred solution of the test device for testing the adhesion amount of shield synchronous grouting slurry pipeline described in the utility model, the slurry storage tank is provided with two groups of air inlet holes connected to the driving component pipeline; the air inlet holes are located at the top of the slurry storage tank and are evenly distributed along the circumference of the slurry storage tank.

[0016] The beneficial effects of the utility model are as follows: the utility model uses the driving component as the power source of the piston, so that the piston can squeeze the slurry in the slurry storage tank, and the slurry can evaluate the slurry adhesion amount through the detection component. The test device has a simple structure, a simple principle, and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 A three-dimensional diagram of the test device for testing the adhesion amount of slurry pipeline during shield synchronous grouting.

[0019] Figure 2 Exploded view of the slurry storage assembly of the test device for testing the adhesion amount of slurry pipeline for shield synchronous grouting.

[0020] Figure 3 A three-dimensional diagram of the detection components of the test device for testing the adhesion amount of slurry pipeline for synchronous grouting of shield machines.

[0021] The various labels in the figure are: drive component 100, slurry storage component 200, slurry storage tank 201, piston 202, piston rod 203, slurry storage cover 300, pressure relief hole 301, detection component 400, circulation pipeline 401, pipeline valve 402, front flow meter 403, rear flow meter 404, air inlet 204. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0025] Example 1

[0026] Reference Figures 1 to 3 , which is the first embodiment of the utility model, provides a test device for testing the adhesion amount of shield synchronous grouting slurry pipeline. It uses the driving component 100 as the power source of the piston 202, which can make the piston 202 squeeze the slurry in the slurry storage tank 201. The slurry can be evaluated for the adhesion amount through the detection component 400. The test device has a simple structure, a simple principle, and is easy to operate.

[0027] Specifically, it includes a driving assembly 100;

[0028] The slurry storage assembly 200 includes a slurry storage tank 201 connected to the driving device 100 through a pipeline, a piston 202 disposed in the slurry storage tank 201, and a piston rod 203 penetrating the slurry storage tank 201 and connected to the piston 202 at one end; under the action of the driving device 100, the piston 202 performs piston motion along its axial direction in the slurry storage tank 201;

[0029] The slurry storage cover 300 is detachably connected to the slurry storage tank 201; a pressure relief hole 301 is provided on the slurry storage cover 300;

[0030] The detection component 400 is connected to the slurry storage cover 300 .

[0031] Furthermore, the driving assembly 100 is a piston air compressor.

[0032] Furthermore, the detection component 400 includes a flow pipe 401 connected to the slurry storage cover 300, a pipe valve 402 arranged on the flow pipe 401, a front flow meter 403 arranged on one side of the pipe valve 402, and a rear flow meter 404 arranged on one side of the pipe valve 402 of the front flow meter 403, and a certain distance is preset between the front flow meter 403 and the rear flow meter 404.

[0033] Furthermore, a sealing ring is provided between the piston 202 and the piston rod 203 and the slurry storage tank 201 .

[0034] It should be noted that if Figure 2 As shown, the slurry storage cover 300 is detachably connected to the slurry storage tank 201, and the slurry storage tank 201 can store the synchronous grouting slurry to be tested, which can be cleaned after being disassembled. An air inlet 204 is opened on the upper part of the slurry storage tank 201 to connect the piston air compressor, and there are pistons 202 and piston rods 203 inside, and the two and the slurry storage tank 3 are sealed and pressure-maintained by the piston seal ring and the piston rod seal ring. The piston rod 203 runs through the slurry storage tank 201 and can achieve a guiding effect to prevent the piston 202 from deflecting during movement.

[0035] Furthermore, the slurry storage tank 201 is provided with two groups of air inlet holes 204 connected to the pipeline of the driving component 100 ; the air inlet holes 204 are located at the top of the slurry storage tank 201 and are evenly distributed along the circumference of the slurry storage tank 201 .

[0036] It should be noted that the driving assembly 100 uses a piston air compressor as the grouting pressure source, and its exhaust volume is 0.14m 3 / min, exhaust pressure 1.0MPa. Connected to the upper part of the slurry storage tank 201 through a pipeline, the piston 202 can be pushed to inject slurry.

[0037] Preferably, the flow pipe 401 is connected to the slurry outlet hole on the side of the slurry storage cover 300, and the slurry flows into the flow pipe 401 under pressure, and the opening and closing of the pipeline can be controlled by the pipeline valve 402. The front flow meter 403 and the rear flow meter 404 are both electromagnetic flow meters, and there is no flow blocker in the flow pipe 401. The measurement accuracy is not affected by the density and viscosity of the slurry, and is suitable for measuring the flow of cement slurry.

[0038] After the grouting is completed, by reading the accumulated flow difference between the front flow meter 403 and the rear flow meter 404, the adhesion amount of the synchronous grouting slurry to the pipeline can be objectively described.

[0039] Furthermore, the slurry storage cover 300 is threadedly connected to the slurry storage tank 201 .

[0040] It should be noted that the threaded connection method is convenient for disassembly and cleaning of the slurry storage tank 201.

[0041] The specific working principle is: firstly, the front flow meter 403 and the rear flow meter 404 are respectively installed at the beginning and end of the flow pipe 401, and then connected to the pipe valve 402, and the valve is kept in a closed state.

[0042] Invert the slurry storage tank 201, fill it with the slurry to be tested, rotate and tighten the slurry storage cover 300 and the slurry storage tank 201 to ensure the sealing performance, and straighten the slurry storage tank 201.

[0043] Then connect the piston air compressor inflation pipe to the upper air inlet 204 of the slurry storage tank 201 and ensure sealing. After setting the appropriate working pressure and inflation time, turn on the piston air compressor and wait for inflation to be completed.

[0044] Finally, the pipeline valve 402 is opened, and the slurry enters the flow pipeline 401 under pressure, and the front flow meter 403 and the rear flow meter 404 are opened at the same time. After waiting for all the slurry to flow through the flow pipeline 401, the accumulated flow difference between the front flow meter 403 and the rear flow meter 404 is read, and the slurry adhesion amount can be evaluated.

[0045] After the test is finished, the piston 202 can be returned to its original position by opening the pressure relief hole 301, or the slurry storage cover 300 and the slurry storage tank 201 can be directly unscrewed for cleaning.

[0046] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A test device for testing the adhesion of shield synchronous grouting slurry pipeline, characterized in that: include, Drive components; The slurry storage assembly comprises a slurry storage tank connected to the driving assembly through a pipeline, a piston arranged in the slurry storage tank, and a piston rod passing through the slurry storage tank and connected to the piston at one end; under the action of the driving assembly, the piston performs piston motion along its axial direction in the slurry storage tank body; A slurry storage cover is detachably connected to the slurry storage tank; a pressure relief hole is provided on the slurry storage cover; A detection component is connected to the slurry storage cover.

2. The test device for testing the adhesion amount of shield synchronous grouting slurry pipeline according to claim 1, characterized in that: The detection component includes a flow pipe connected to the slurry storage cover, a pipeline valve arranged on the flow pipe, a front flow meter arranged on one side of the pipeline valve, and a rear flow meter arranged on one side of the pipeline valve of the front flow meter, and a certain distance is preset between the front flow meter and the rear flow meter.

3. The test device for testing the adhesion amount of shield synchronous grouting slurry pipeline according to claim 1, characterized in that: A sealing ring is arranged between the piston, the piston rod and the slurry storage tank.

4. The test device for testing the adhesion amount of shield synchronous grouting slurry pipeline according to claim 1, characterized in that: The slurry storage cover is threadedly connected to the slurry storage tank.

5. The test device for testing the adhesion amount of shield synchronous grouting slurry pipeline according to claim 1, characterized in that: The driving assembly is a piston air compressor.

6. The test device for testing the adhesion amount of shield synchronous grouting slurry pipeline according to claim 1, characterized in that: The slurry storage tank is provided with two groups of air inlet holes connected to the driving component pipeline; the air inlet holes are located at the top of the slurry storage tank and are evenly distributed along the circumference of the slurry storage tank.

Images