Side pressure device

Abstract

The utility model relates to the field of lateral pressure devices, in particular to a lateral pressure device, an elastic film is arranged on the outer side of a lateral pressure device body, a sheath outer film is sleeved on the lateral pressure device body and located on the outer side of the elastic film, the sheath outer film is arranged in a spiral surrounding mode, and a pipe splicing boot is fixedly arranged at the other end of the lateral pressure device body. A detachable splicing cap is arranged at the position, located on one side of the elastic film, of the outer side of the side pressure device body, and an inner pressing ring and an outer pressing ring are arranged on the outer side of the splicing cap. According to the utility model, through the arrangement of the sheath outer film which is spirally wound on the outer side of the side pressure device body, the consumption of the elastic film can be reduced, the replacement frequency of the elastic film on site can be reduced, the pressure in the side pressure device body can be kept stable, and the accuracy of a test result can be improved.

Description

Technical Field

[0001] This utility model relates to the field of pressure bypass technology, and in particular to pressure bypass devices. Background Technology

[0002] A pressure gauge is a physical performance testing instrument widely used in the fields of mechanics and civil engineering. A pressure gauge works by vertically placing a cylindrical pressure gauge in the soil, then applying pressure to its interior, causing the pressure gauge membrane to expand. This expansion transmits pressure to the surrounding soil or rock mass, causing deformation and eventually failure. By measuring the relationship between the applied pressure and the soil deformation, the stress-strain relationship of the foundation soil in the horizontal direction can be obtained.

[0003] Currently available pressure gauges have certain drawbacks, such as poor sealing performance and the need for frequent replacement of the elastic diaphragm. This can lead to unstable internal pressure, resulting in pressure loss during testing and inaccurate test results that fail to accurately reflect the mechanical properties of the soil or rock. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a pressure bypass device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pressure bypass device includes a pressure bypass device body, an elastic diaphragm is provided on the outer side of the pressure bypass device body, and a protective outer diaphragm is sleeved on the outer side of the pressure bypass device body outside the elastic diaphragm, the protective outer diaphragm being arranged in a "spiral wrapping" manner; a detachable cap is provided on the outer side of the pressure bypass device body on one side of the elastic diaphragm, and an inner pressure ring and an outer pressure ring are respectively provided on the outer side of the cap.

[0007] In addition, a preferred structure is that the outer membrane of the sheath has a screw hole adapted to the fixing nut, the cover is fixedly sleeved on the outside of the outer membrane of the sheath by the fixing nut, and an O-ring is provided inside the cover.

[0008] Furthermore, in a preferred configuration, a perforated tile is provided on the inner wall of the pressure bypass body, and the perforated tile is located in the middle of the pressure bypass body.

[0009] Furthermore, in a preferred configuration, the elastic membrane is fixed by a splicing cap, with an inner pressure ring on the outer side of the splicing cap and an outer pressure ring on the outer side of the inner pressure ring.

[0010] The beneficial effects of this utility model are as follows: by setting the outer sheath membrane spirally wrapped around the outside of the pressure bypass body, not only can the consumption of the elastic membrane be reduced and the number of times the elastic membrane is replaced on site be reduced, but the pressure inside the pressure bypass body can also be kept stable, thereby improving the accuracy of the test results. Attached Figure Description

[0011] Figure 1 This is a cross-sectional view of the bypass pressure device proposed in this utility model.

[0012] In the diagram: 1. Pressure bypass body, 2. O-ring, 3. Elastic diaphragm, 31. Outer sheath diaphragm, 4. Screw cap, 5. Cap, 6. Inner pressure ring, 7. Outer pressure ring, 8. Protective cover, 9. Fixing nut. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0014] Reference Figure 1 The pressure bypass device includes a pressure bypass device body 1, an elastic diaphragm 3 on the outer side of the pressure bypass device body 1, and a protective outer diaphragm 31 on the outer side of the elastic diaphragm 3, the protective outer diaphragm 31 being arranged in a "spiral wrapping" configuration. A detachable cap 5 is provided on one side of the elastic diaphragm 3 on the outer side of the pressure bypass device body 1, and an inner pressure ring 6 and an outer pressure ring 7 are respectively provided on the outer side of the cap 5.

[0015] The pressure gauge body 1 adopts a three-chamber structure with good rationality in applying radial pressure to the borehole wall. It consists of a measuring chamber and two protective chambers. The function of the protective chambers is to extend the length of the test soil layer on the borehole wall; to support the expansion of the measuring chamber; to reduce the influence of the end of the measuring chamber; and to make the measuring chamber generate uniform pressure on the borehole wall, thereby simplifying the complex spatial strain into an approximate plane strain state.

[0016] The outer sheath 31 has screw holes that fit the fixing nut 9. The cover 8 is fixedly fitted onto the outside of the outer sheath 31 by the fixing nut 9, and an O-ring 2 is provided inside the cover 8. The O-ring 2 improves the sealing performance of the cover 8 after installation, thereby improving the stability of the device during use.

[0017] The pressure bypass body 1 has a perforated sleeve 4 installed on its inner wall, and the perforated sleeve 4 is located in the middle of the pressure bypass body 1. The perforated sleeve 4 has perforations and can be used to filter or permeate liquids, gases, or other media. It is worth noting that the specific structure and working method of the perforated sleeve 4 are existing technologies already disclosed in the market, and they are not the main technical problems to be solved in this technical solution. Therefore, they will not be described in detail in this utility model.

[0018] The elastic membrane 3 is fixed by the splicing cap 5. An inner clamping ring 6 is provided on the outer side of the splicing cap 5, and an outer clamping ring 7 is provided on the outer side of the inner clamping ring 6. The inner clamping ring 6 and the outer clamping ring 7 can prevent the splicing cap 5 from loosening, thereby improving the installation stability of the elastic membrane 3.

[0019] In this embodiment, the outer sheath 31 of the pressure bypass body 1 is further made of spiral cloth wound reinforcement protective membrane, which is applicable to a wide range of soil layers, can reduce the consumption of elastic membrane 3, and reduce the number of times the elastic membrane 3 needs to be replaced on site.

[0020] Furthermore, the pressure bypass body 1 has a size of Φ74mm, which can be drilled using a standard Φ75mm drill bit for general engineering drilling rigs, making it easy to fit the site.

[0021] In this invention, the outer sheath 31 spirally surrounding the outside of the pressure bypass body 1 not only reduces the consumption of the elastic membrane 3 and the number of times the elastic membrane 3 needs to be replaced on site, but also maintains the internal pressure of the pressure bypass body 1 and improves the accuracy of the test results.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pressure bypass device, comprising a pressure bypass device body (1), characterized in that, An elastic membrane (3) is provided on the outside of the bypass pressure body (1), and a protective outer membrane (31) is provided on the bypass pressure body (1) on the outside of the elastic membrane (3), and the protective outer membrane (31) is arranged in a "spiral wrapping" manner. The outside of the pressure bypass body (1) is provided with a detachable cap (5) on one side of the elastic membrane (3), and an inner pressure ring (6) and an outer pressure ring (7) are respectively provided on the outside of the cap (5).

2. The pressure bypass device according to claim 1, characterized in that, The outer membrane (31) of the sheath has a screw hole that matches the fixing nut (9). The cover (8) is fixedly sleeved on the outside of the outer membrane (31) by the fixing nut (9), and an O-ring (2) is provided inside the cover (8).

3. The pressure bypass device according to claim 2, characterized in that, The inner wall of the pressure bypass body (1) is provided with a drain tube tile (4), and the drain tube tile (4) is located in the middle of the pressure bypass body (1).

4. The pressure bypass device according to claim 3, characterized in that, The elastic membrane (3) is fixed by a splicing cap (5), and an inner pressure ring (6) is provided on the outside of the splicing cap (5), and an outer pressure ring (7) is provided on the outside of the inner pressure ring (6).

Images