A chemical pipeline safety cover

Abstract

The utility model relates to the technical field of chemical pipelines, specifically a chemical pipeline safety cover, including a lower cover body and an upper cover body hinged at the upper end of the lower cover body, the outer wall bottom of the lower cover body is connected to a discharge pipe, the inner wall of the discharge pipe is fitted with a fixing ring, and the lower edge of the inner wall of the discharge pipe is symmetrically provided with hemispherical holes, and a positioning mechanism and a guiding mechanism are respectively provided between the fixing ring and the discharge pipe. The activated carbon filter can be easily installed in the discharge pipe connected under the flange protection cover. For smaller leaks at the flange of the chemical pipeline, the leaked material will pass through the activated carbon filter to filter out harmful substances, avoiding the harm caused by smaller leaks as easily as larger leaks; for larger leaks at the flange of the chemical pipeline, the leaked material will break through the activated carbon filter to release the pressure inside the flange protection cover, and the leaked material will be discharged downward instead of splashing around, which greatly reduces the harm.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical pipelines, in particular to a chemical pipeline safety cover. Background Art

[0002] Chemical pipelines refer to pipelines used to transport chemical raw materials, products or other liquids and gases. The joints between chemical pipelines are usually flange connections. In order to ensure safety, flange protection covers are usually installed on the outside of the flanges. The main function of the flange protection cover is to prevent the flanges from being loosely connected or the pipeline pressure from being too high, causing liquid splashing and leakage, which may cause harm to on-site workers and surrounding equipment, and play a good protective role.

[0003] Flange connections on chemical pipelines may cause leakage to varying degrees. For larger leaks, as more and more leaks are leaked inside the flange protective cover, the flange protective cover may be expanded, thus failing to prevent splashing, which will have adverse effects on surrounding personnel or facilities; for smaller leaks, the leaks may slowly leak out from the gap between the flange protective cover and the chemical pipeline, and the leaks usually contain harmful substances, making smaller leaks easily cause hazards equivalent to larger leaks. To this end, we propose a chemical pipeline safety cover. Utility Model Content

[0004] The purpose of the utility model is to provide a chemical pipeline safety cover to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a chemical pipeline safety cover, comprising a lower cover body and an upper cover body hinged at the upper end of the lower cover body, the bottom of the outer wall of the lower cover body is connected to a discharge pipe, the inner wall of the discharge pipe is fitted with a fixing ring, and hemispherical holes are symmetrically opened at the lower edge of the inner wall of the discharge pipe, a positioning mechanism and a guiding mechanism are respectively provided between the fixing ring and the discharge pipe, and an activated carbon filter is fixedly connected to the inner wall of the fixing ring, the positioning mechanism comprises a connecting ring, the connecting ring is fixedly connected to the bottom end of the fixing ring, and the outer wall of the connecting ring is fitted with the inner wall of the discharge pipe, and spherical pins are symmetrically slidably inserted into the inner wall of the connecting ring, an elastic mechanism is provided between the two spherical pins and the connecting ring, and the hemispherical ends of the two spherical pins are respectively slidably matched with the two hemispherical holes.

[0006] Preferably, the guide mechanism includes two positioning blocks and two guide grooves, the two positioning blocks are symmetrically fixedly connected to the outer wall of the fixing ring, the two guide grooves are symmetrically opened on the inner wall of the discharge pipe, and the two guide grooves are respectively slidably matched with the two positioning blocks.

[0007] Preferably, the elastic mechanism includes a fixed plate and a connecting plate, the fixed plate is fixedly connected to the inner ring surface of the connecting ring, the spherical pin movably passes through the middle inner wall of the fixed plate, the connecting plate is fixedly connected to the spherical pin at one end of the center of the connecting ring corresponding to the center of the connecting ring, and a spring is fixedly connected between the connecting plate and the fixed plate, and the spring is slidably sleeved on the outer wall of the spherical pin.

[0008] Preferably, the outer wall of the connecting ring is symmetrically provided with holes and grooves, and the two holes and grooves are respectively slidably matched with the two spherical pins.

[0009] Preferably, an upper mounting plate is fixedly connected to the top of the outer wall of the upper cover body, and a plurality of mounting holes are opened on the side wall of the upper mounting plate.

[0010] Preferably, a lower mounting plate is fixedly connected to the upper edge of the outer wall of the lower cover body, and a plurality of mounting holes 2 are formed at the upper end of the lower mounting plate.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the activated carbon filter can be easily installed in the discharge pipe connected under the flange protective cover. For smaller leaks at the chemical pipeline flange, the leaked material will pass through the activated carbon filter to filter out harmful substances, thereby preventing smaller leaks from easily causing hazards equivalent to larger leaks; for larger leaks at the chemical pipeline flange, the leaked material will break through the activated carbon filter to release the pressure inside the flange protective cover, and the leaked material will be discharged downwards instead of splashing around, thereby greatly reducing the hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a partial cross-sectional view of the lower cover body and the discharge pipe of the utility model;

[0014] Figure 3 It is a partial cross-sectional view of the connection ring and the fixing plate of the utility model;

[0015] Figure 4 It is a partial cross-sectional view of the discharge pipe of the utility model.

[0016] In the accompanying drawings, the list of components represented by each reference numeral is as follows: 1. Mounting hole one; 2. Upper mounting plate; 3. Upper cover body; 4. Lower cover body; 5. Lower mounting plate; 6. Mounting hole two; 7. Discharge pipe; 8. Activated carbon filter; 9. Fixed ring; 10. Positioning block; 11. Connecting ring; 12. Hemispherical hole; 13. Fixed plate; 14. Connecting disk; 15. Spring; 16. Spherical pin; 17. Hole groove; 18. Guide groove. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Example 1: Please refer to Figure 1-Figure 4 , a chemical pipeline safety cover is shown in the figure, including a lower cover body 4 and an upper cover body 3 hinged at the upper end of the lower cover body 4, the bottom of the outer wall of the lower cover body 4 is connected with a discharge pipe 7, the inner wall of the discharge pipe 7 is fitted with a fixing ring 9, and the lower edge of the inner wall of the discharge pipe 7 is symmetrically opened with hemispherical holes 12, a positioning mechanism and a guiding mechanism are respectively provided between the fixing ring 9 and the discharge pipe 7, and an activated carbon filter 8 is fixedly connected to the inner wall of the fixing ring 9, the positioning mechanism includes a connecting ring 11, the connecting ring 11 is fixedly connected to the bottom end of the fixing ring 9, and the outer wall of the connecting ring 11 is fitted with the inner wall of the discharge pipe 7, and spherical pins 16 are symmetrically slidably inserted into the inner wall of the connecting ring 11, and elastic mechanisms are provided between the two spherical pins 16 and the connecting ring 11, and the hemispherical ends of the two spherical pins 16 are respectively slidably matched with the two hemispherical holes 12.

[0019] The elastic mechanism includes a fixed plate 13 and a connecting plate 14. The fixed plate 13 is fixedly connected to the inner ring surface of the connecting ring 11. The spherical pin 16 movably penetrates the middle inner wall of the fixed plate 13. The connecting plate 14 is fixedly connected to the spherical pin 16 corresponding to the center end of the connecting ring 11, and a spring 15 is fixedly connected between the connecting plate 14 and the fixed plate 13. The spring 15 is slidably sleeved on the outer wall of the spherical pin 16.

[0020] The outer wall of the connecting ring 11 is symmetrically provided with holes and grooves 17 , and the two holes and grooves 17 are slidably matched with the two spherical pins 16 respectively.

[0021] An upper mounting plate 2 is fixedly connected to the top of the outer wall of the upper cover body 3, and a plurality of mounting holes 1 are opened on the side wall of the upper mounting plate 2.

[0022] A lower mounting plate 5 is fixedly connected to the upper edge of the outer wall of the lower cover body 4 , and a plurality of mounting holes 6 are formed at the upper end of the lower mounting plate 5 .

[0023] In this embodiment, firstly, by setting an upper mounting plate 2, a lower mounting plate 5, and a plurality of mounting holes 1 on the upper mounting plate 2, and a plurality of mounting holes 2 6 on the lower mounting plate 5, when the upper cover body 3 and the lower cover body 4 are combined at the flange of the chemical pipeline, the upper cover body 3 and the lower cover body 4 can be fixed by passing bolts through the corresponding mounting holes 1 and mounting holes 2 6 and tightening nuts on the outer walls of the bolts.

[0024] For a smaller leak at the flange of the chemical pipeline, the leaked material will fall downward to the inner bottom of the lower cover body 4, and then flow into the discharge pipe 7. The leaked material will then pass through the activated carbon filter 8 in the fixed ring 9. Under the action of the activated carbon filter 8, harmful substances in the leaked material can be filtered to a certain extent. The filtered leaked material will finally flow out along the discharge pipe 7, thereby reducing the harm of the leaked material and preventing a smaller leak from easily causing harm equivalent to a larger leak.

[0025] In case of a large leakage at the flange of the chemical pipeline, the leaked material will quickly fill the space between the upper cover body 3 and the lower cover body 4, and then under the action of pressure, the fixing ring 9 and the activated carbon filter 8 will be pushed downward out of the discharge pipe 7. During the process, the fixing ring 9 will drive the hemispherical ends of the two spherical pins 16 to slide away from the corresponding hemispherical holes 12 on the inner wall of the discharge pipe 7, and each spherical pin 16 will slide in the inner wall of the corresponding fixing plate 13, and each spherical pin 16 will drive the connecting plate 14 connected to its end to move together, and each piece The connecting plate 14 will stretch the spring 15 connected to the corresponding fixed plate 13. It should be noted that the contact area between the hemispherical end of the spherical pin 16 and the hemispherical hole 12 is small, and the spring 15 has a weak elastic force. The pressure generated after the leakage fills the space between the upper cover body 3 and the lower cover body 4 is easy to drive the fixing ring 9 and the activated carbon filter 8 to be pushed downward out of the discharge pipe 7. At this time, the leakage will be discharged downward instead of splashing around, which greatly reduces the harm, and the upper cover body 3 and the lower cover body 4 are not easy to be expanded.

[0026] Example 2: Please refer to Figure 2 and Figure 4 This embodiment further explains Example 1. The guide mechanism in the figure includes two positioning blocks 10 and two guide grooves 18. The two positioning blocks 10 are symmetrically fixedly connected to the outer wall of the fixing ring 9. The two guide grooves 18 are symmetrically opened on the inner wall of the discharge pipe 7, and the two guide grooves 18 are slidably matched with the two positioning blocks 10 respectively.

[0027] In this embodiment, when the fixing ring 9 and the activated carbon filter 8 are installed in the discharge pipe 7, the fixing ring 9 is held and inserted upward along the lower port of the discharge pipe 7, and the two positioning blocks 10 outside the fixing ring 9 are respectively matched with the two guide grooves 18 in the discharge pipe 7. At this time, the two spherical pins 16 will be respectively located directly below the two hemispherical holes 12, and the fixing ring 9 will not deflect when continuing to move upward, which is convenient for the alignment of the spherical pins 16 and the hemispherical holes 12, thereby facilitating the installation of the fixing ring 9 and the activated carbon filter 8 and bringing convenience.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. 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.

[0029] 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 chemical pipeline safety cover, comprising a lower cover body (4) and an upper cover body (3) hinged to the upper end of the lower cover body (4), characterized in that: The bottom of the outer wall of the lower cover body (4) is connected to a discharge pipe (7), the inner wall of the discharge pipe (7) is fitted with a fixing ring (9), and a hemispherical hole (12) is symmetrically opened at the lower edge of the inner wall of the discharge pipe (7), a positioning mechanism and a guiding mechanism are respectively provided between the fixing ring (9) and the discharge pipe (7), and the inner wall of the fixing ring (9) is fixedly connected with an activated carbon filter (8), the positioning mechanism comprises a connecting ring (11), the connecting ring (11) is fixedly connected to the bottom end of the fixing ring (9), and the outer wall of the connecting ring (11) is fitted with the inner wall of the discharge pipe (7), and the inner wall of the connecting ring (11) is symmetrically slidably inserted with a spherical pin (16), and an elastic mechanism is provided between the two spherical pins (16) and the connecting ring (11), and the hemispherical ends of the two spherical pins (16) are respectively slidably matched with the two hemispherical holes (12).

2. A chemical pipeline safety cover according to claim 1, characterized in that: The guide mechanism comprises two positioning blocks (10) and two guide grooves (18). The two positioning blocks (10) are symmetrically fixedly connected to the outer wall of the fixing ring (9). The two guide grooves (18) are symmetrically arranged on the inner wall of the discharge pipe (7). The two guide grooves (18) are respectively slidably matched with the two positioning blocks (10).

3. A chemical pipeline safety cover according to claim 1, characterized in that: The elastic mechanism comprises a fixing plate (13) and a connecting plate (14); the fixing plate (13) is fixedly connected to the inner ring surface of the connecting ring (11); the spherical pin (16) movably penetrates the middle inner wall of the fixing plate (13); the connecting plate (14) is fixedly connected to the central end of the spherical pin (16) corresponding to the connecting ring (11); and a spring (15) is fixedly connected between the connecting plate (14) and the fixing plate (13); the spring (15) is slidably sleeved on the outer wall of the spherical pin (16).

4. A chemical pipeline safety cover according to claim 1, characterized in that: The outer wall of the connecting ring (11) is symmetrically provided with hole grooves (17), and the two hole grooves (17) are respectively slidably matched with the two spherical pins (16).

5. A chemical pipeline safety cover according to claim 1, characterized in that: An upper mounting plate (2) is fixedly connected to the top of the outer wall of the upper cover body (3), and a plurality of mounting holes (1) are provided on the side wall of the upper mounting plate (2).

6. A chemical pipeline safety cover according to claim 1, characterized in that: A lower mounting plate (5) is fixedly connected to the upper edge of the outer wall of the lower cover body (4), and a plurality of mounting holes (6) are provided at the upper end of the lower mounting plate (5).

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