Stainless steel pressure tube port protection cover

Abstract

The application discloses a stainless steel pressure measuring pipe mouth protection cover and belongs to the field of water conservancy projects. The inner wall of the pressure measuring pipe near the top end is provided with a clamping groove. The protection cover comprises a shell and an inclined surface at the lower surface of the shell. A guide groove is arranged on the lower end surface of the shell along the inclined direction. An elastic pressure head is arranged in the shell, and the bottom end of the elastic pressure head is provided with an outward convex body. A movable clamping piece is arranged in the shell below the elastic pressure head, and the movable clamping piece is slidably arranged in the guide groove. The top end of the movable clamping piece is provided with an upper hook plate, the outward convex body is below the upper hook plate, and the outward convex body always has an overlapping area with the upper hook plate when the movable clamping piece moves to the lowermost position. The elastic pressure head and the movable clamping piece can improve the complexity of the whole protection cover when being opened. Specifically, the complexity of the protection cover is improved by the different sequences of the movable clamping piece and the whole protection cover, so that the protection cover is not easily opened by irrelevant personnel, and the possibility that the osmometer in the osmotic pressure pipe is easily damaged is reduced.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy engineering technology, and in particular to a stainless steel pressure testing pipe port protective cover. Background Technology

[0002] In hydraulic engineering, it is frequently necessary to measure the pore water pressure or seepage pressure inside structures. The primary tool required is a piezometer. Piezometers are mainly used for measuring water pressure and level in piezometric tubes, measuring pore water pressure in backfill or in-situ, and measuring uplift pressure. Piezometric tubes are mainly installed outdoors, thus posing a risk of damage to personnel and during construction work. Therefore, installing a protective cover at the top of the piezometric tube is crucial. Most existing protective covers are simply simple caps that fit directly onto the top of the piezometric tube. Since the piezometric tube is generally outdoors, unauthorized personnel other than construction workers can easily operate the protective cover. Once easily opened, the piezometer inside the piezometric tube is easily damaged by external forces. Utility Model Content

[0003] Existing stainless steel pressure gauges primarily protect the inlet by simply attaching a cap. However, since pressure gauges are typically located outdoors, the cap can be easily opened by unauthorized personnel other than construction workers. Once opened, the piezometer inside the gauge is easily damaged. Therefore, this application designs a protective cap for stainless steel pressure gauge inlets, the specific technical solution of which is as follows:

[0004] A protective cap for a stainless steel pressure testing tube has a groove on the inner wall near the top of the pressure testing tube. The protective cap includes:

[0005] The outer shell has an inclined lower surface and a guide groove on the lower end surface of the outer shell along its inclined direction. At least two guide grooves are provided, and the at least two guide grooves are spaced apart along the circumference of the outer shell.

[0006] The elastic pressure head is located inside the housing, and the bottom end of the elastic pressure head has an outward protrusion.

[0007] The movable card connector is located inside the housing and below the elastic pressure head. The movable card connector is slidably mounted on the guide groove. The top of the movable card connector has an upper hook plate, and the outer protrusion is located below the upper hook plate. The outer protrusion always overlaps with the upper hook plate when the movable card connector moves to the lowest position.

[0008] Preferably, the housing has an internal flange, and the elastic pressure head is movably disposed inside the housing by a spring on the lower surface of the flange.

[0009] Preferably, the elastic pressure head includes an upper pressure head and a lower pressure head, which are detachably connected. The upper pressure head is located above the flange, and the lower pressure head is located below the flange.

[0010] Preferably, the outer protrusion is located at the bottom of the lower pressure head and is a cone shape that is smaller at the top and larger at the bottom, with the upper hook plate located above the outer protrusion.

[0011] Preferably, the movable latching member is a cone shape with a smaller top and a larger bottom. The outer circumferential surface of the movable latching member is provided with at least two sliders, which are slidably disposed in the guide groove. The circumferential surface of the movable latching member is provided with a latching protrusion near the bottom. The latching protrusion of the movable latching member at the lowest position can be engaged into the latching groove. The upper hook plate is disposed on the upper surface of the movable latching member and is disposed higher than the upper surface of the movable latching member.

[0012] Preferably, the card slot is annular and the card protrusion is annular;

[0013] Alternatively, multiple card slots may be provided, spaced apart around the perimeter of the outer casing, and multiple card protrusions may be provided, spaced apart around the perimeter of the movable card connector, with each card slot and protrusion being quadrilateral or circular.

[0014] Preferably, the outer circumferential surface of the outer shell has a necked section near the bottom.

[0015] Preferably, the upper surface of the elastic pressure head is provided with a movable pull ring.

[0016] This invention increases the complexity of opening the protective cover by setting an elastic pressure head and a movable locking connector. Specifically, the different sequences of the movable locking connector and the entire protective cover increase the complexity of the protective cover, thereby preventing the protective cover from being easily opened by unauthorized personnel and reducing the possibility of the piezometer inside the piezometer tube being easily damaged. Attached Figure Description

[0017] Figure 1 This is the front view of the present invention.

[0018] In the diagram, 1. Pressure measuring tube, 2. Outer shell, 3. Neck, 4. Elastic pressure head, 401. Upper pressure head, 402. Lower pressure head, 403. Outer protrusion, 5. Spring, 6. Upper hook plate, 7. Guide groove, 8. Slider, 9. Movable snap-fit ​​part, 10. Snap-fit ​​protrusion, 11. Snap-fit ​​groove, 12. Movable pull ring, 13. Flange. Detailed Implementation

[0019] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0020] Furthermore, in the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0021] like Figure 1 As shown, a stainless steel pressure testing tube port protective cover has a groove 11 on the inner wall near its top of the pressure testing tube 1. Specifically, the groove 11 is an annular groove 11. The protective cover includes a shell 2, an elastic pressure head 4, and a movable locking member 9. The shell 2 is cylindrical in shape, and its lower surface is inclined, with the inclination direction such that the position where the inclined surface extends to the inner wall is higher than the position where it extends to the outer wall. The lower end surface of the shell 2 has a guide groove 7 along its inclined direction. At least two guide grooves 7 are provided, and the at least two guide grooves 7 are spaced apart along the circumference of the shell 2. The movable locking member 9 is slidably disposed in the guide groove 7 and can slide along the guide groove 7, thereby realizing the raising and lowering of the movable locking member 9.

[0022] The aforementioned elastic pressure head 4 is disposed inside the outer casing 2. The bottom end of the elastic pressure head 4 has an outward protrusion 403. The movable locking member 9 is disposed inside the outer casing 2 and located below the elastic pressure head 4. The top end of the movable locking member 9 has an upper hook plate 6. The outward protrusion 403 is located below the upper hook plate 6, and the outward protrusion 403 always overlaps with the upper hook plate 6 when the movable locking member 9 moves to its lowest position. Therefore, when external pressure is applied to the elastic pressure head 4, when the elastic pressure head 4 presses down, the outward protrusion 403 of the elastic pressure head 4 presses down on the movable locking member 9. The movable locking member 9 descends along the guide groove 7, thereby engaging its lower part with the locking groove 11 on the inner wall of the pressure measuring tube 1, improving the tightness of the connection between the entire protective cover and the pressure measuring tube 1. When the protective cover needs to be opened, first pull the elastic pressure head 4 upward. The outer protrusion 403 of the elastic pressure head 4 drives the upper hook plate 6 upward, which in turn drives the entire movable locking part 9 to move upward along the guide groove 7, so that the lower part of the movable locking part 9 is disengaged from the slot 11. Then, manually pull the entire protective cover to open it easily.

[0023] It should be noted that the aforementioned protruding body 403 must be designed to ensure that it exists within the overlapping area of ​​the upper hook plate 6 when it descends to the lowest and highest positions, so that it will not detach from the upper hook plate 6.

[0024] Furthermore, the aforementioned outer casing 2 has a flange 13 inside, and the elastic pressure head 4 is disposed inside the outer casing 2 via a spring 5 on the lower surface of the flange 13. Specifically, the upper end of the elastic head is connected to the lower surface of the flange 13, and the lower end is connected to the elastic pressure head 4. This connection can be made by welding, or by welding a nut to one end of the spring 5 and embedding bolts on the lower surface of the flange 13 and the elastic pressure head 4, and connecting the spring 5 to the flange 13 and the elastic pressure head 4 by screwing the nut into the bolt. The nuts and bolts mentioned above are all small structural components.

[0025] Furthermore, the structure of the aforementioned elastic pressure head 4 specifically includes an upper pressure head 401 and a lower pressure head 402. The upper pressure head 401 and the lower pressure head 402 are detachably connected, specifically by means of snap-fit, threaded connection, etc., preferably by threaded connection. The upper pressure head 401 is located above the flange 13, and the lower pressure head 402 is located below the flange 13. When the protective cover is opened, the upper pressure head 401 and the lower pressure head 402 can also be disassembled to replace the parts.

[0026] Furthermore, the outer protrusion 403 is located at the bottom of the lower pressure head 402 and is a cone shape with a smaller top and a larger bottom. The upper hook plate 6 is located above the outer protrusion 403. When the outer protrusion 403 rises to the highest position and falls to the lowest position, there is an overlapping area between the outer protrusion 403 and the upper hook plate 6, which ensures that it will not come out of the upper hook plate 6.

[0027] Furthermore, the aforementioned movable latching member 9 is a cone shape with a smaller top and a larger bottom, so that its circumferential surface can be adapted to the inclined surface of the outer shell 2. The outer circumferential surface of the movable latching member 9 is provided with at least two sliders 8, and the specific number of sliders 8 is the same as the number of guide grooves 7. The sliders 8 are correspondingly slidably disposed in the guide grooves 7. The circumferential surface of the movable latching member 9 is provided with a latching protrusion 10 near the bottom end. At the lowest position, the latching protrusion 10 of the movable latching member 9 can be engaged in the latching groove 11. The upper hook plate 6 is disposed on the upper surface of the movable latching member 9 and is set higher than the upper surface of the movable latching member 9.

[0028] In one embodiment, the aforementioned slot 11 is annular, the slot protrusion 10 is annular, or multiple slots 11 are provided, with multiple slots 11 spaced apart around the perimeter of the outer shell 2, and multiple slot protrusions 10 are provided, with multiple slot protrusions 10 spaced apart around the perimeter of the movable snap-fit ​​member 9, and each slot 11 and slot protrusion 10 is quadrilateral or circular.

[0029] Furthermore, in order to ensure that the protrusion 10 has enough space to rise and fall, and to avoid interference between the protrusion 10 and the inner wall of the pressure measuring tube 1 at the highest position, the outer circumferential surface of the outer shell 2 is provided with a necked section 3 near the bottom.

[0030] Furthermore, in order to facilitate pulling the elastic pressure head 4, a movable pull ring 12 is provided on the upper surface of the elastic pressure head 4. The movable pull ring 12 is hinged to the upper surface of the elastic pressure head 4. When not pulled, the plane of the movable pull ring 12 is basically parallel to the upper surface of the elastic pressure head 4 to avoid damage from external objects.

[0031] The above specific embodiments should not be construed as limiting the scope of protection of this utility model. For those skilled in the art, any alternative improvements or modifications made to the embodiments of this utility model shall fall within the scope of protection of this utility model.

[0032] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. A stainless steel pressure testing pipe port protective cover, characterized in that, The pressure testing tube has a slot on its inner wall near its top, and the protective cover includes: The outer casing has an inclined lower surface and a guide groove provided on the lower end surface of the outer casing along its inclined direction. At least two guide grooves are provided, and the at least two guide grooves are spaced apart along the circumferential direction of the outer casing. An elastic pressure head is disposed inside the housing, and the bottom end of the elastic pressure head has an outward protrusion; A movable latching component is disposed inside the housing and located below the elastic pressure head. The movable latching component is slidably disposed in the guide groove. The top of the movable latching component has an upper hook plate. The outer protrusion is located below the upper hook plate, and the outer protrusion always has an overlapping area with the upper hook plate when the movable latching component moves to the lowest position.

2. The stainless steel pressure testing pipe port protective cover according to claim 1, characterized in that, The housing has an internal flange, and the elastic pressure head is movably disposed within the housing by a spring on the lower surface of the flange.

3. A stainless steel pressure testing pipe port protective cover according to claim 2, characterized in that, The elastic pressure head includes an upper pressure head and a lower pressure head, which are detachably connected. The upper pressure head is located above the flange, and the lower pressure head is located below the flange.

4. A stainless steel pressure testing pipe port protective cover according to claim 3, characterized in that, The outer protrusion is located at the bottom of the lower pressure head and is a cone shape that is smaller at the top and larger at the bottom. The upper hook plate is located above the outer protrusion.

5. A stainless steel pressure testing pipe port protective cover according to claim 1, characterized in that, The movable latching component is a cone shape with a smaller top and a larger bottom. The outer circumferential surface of the movable latching component is provided with at least two sliders, which are slidably disposed in the guide groove. The circumferential surface of the movable latching component is provided with a latching protrusion near the bottom end. At the lowest position, the latching protrusion of the movable latching component can be engaged in the latching groove. The upper hook plate is disposed on the upper surface of the movable latching component and is disposed above the upper surface of the movable latching component.

6. A stainless steel pressure testing pipe port protective cover according to claim 5, characterized in that, The slot is annular, and the protrusion is annular; Alternatively, multiple card slots may be provided, with the multiple card slots spaced apart around the perimeter of the outer shell, and multiple card protrusions may be provided, with the multiple card protrusions spaced apart around the perimeter of the movable card connector, and each card slot and card protrusion may be quadrilateral or circular.

7. A stainless steel pressure testing pipe port protective cover according to claim 1, characterized in that, The outer circumferential surface of the outer shell has a necked section near the bottom.

8. A stainless steel pressure testing pipe port protective cover according to claim 1, characterized in that, The upper surface of the elastic pressure head is provided with a movable pull ring.

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