Leakage-proof safety cover for chemical pipeline

Abstract

The utility model relates to a chemical pipeline leakproof safety cover, which comprises a protective cover arranged at the flange joint of the chemical pipeline, the inner side walls of the two ends of the protective cover are tightly attached to the outer side wall of the chemical pipeline, and the inner cavity of the protective cover and the outer side wall of the chemical pipeline form a closed cavity. And a first through hole is formed in the side wall of the protective cover, a collecting assembly is installed at the first through hole, the collecting assembly communicates with the closed cavity through the first through hole, and a filter screen is arranged at the joint of the collecting assembly and the first through hole. The utility model relates to a safety hood, and aims to provide a leakage-proof safety hood for a chemical pipeline to solve the problem of environmental pollution to a certain degree due to the fact that the flange connecting part of the chemical pipeline is mostly exposed to the outside and leakage is directly discharged to the outside after the flange connecting part of the chemical pipeline leaks in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical pipeline anti - leakage, and particularly relates to a chemical pipeline anti - leakage safety cover. Background Art

[0002] Chemical pipelines are widely used in the chemical industry to transport various gaseous and liquid chemical products. Due to the wide variety of chemical products, and many chemical products having characteristics such as corrosiveness, toxicity, flammability or explosiveness, the leakage of chemical products will cause a certain degree of environmental pollution.

[0003] Common connection methods in chemical pipeline systems include flange connection. By docking the flange plates at both ends of the pipeline and fixing them with bolts, and cooperating with gaskets to achieve the connection between pipelines. However, due to factors such as the corrosiveness of chemical media, the working environment of high pressure and high temperature, and frequent start - stop operations, the flange connection is often one of the most prone to leakage places in the chemical pipeline system. Therefore, the anti - leakage technology for flange connections is particularly important.

[0004] Since the flange connections of chemical pipelines are mostly exposed to the outside world, after the leakage of the flange connections of chemical pipelines, it is directly discharged to the outside world, which will cause a certain degree of environmental pollution. Content of the Utility Model

[0005] In view of this, the purpose of the utility model is to provide a chemical pipeline anti - leakage safety cover to solve the problem in the prior art that the flange connections of chemical pipelines are mostly exposed to the outside world, resulting in direct discharge to the outside world after leakage of the flange connections of chemical pipelines, which will cause a certain degree of environmental pollution.

[0006] The utility model is realized through the following technical solutions:

[0007] A chemical pipeline anti - leakage safety cover includes a protective cover installed at the flange connection of a chemical pipeline. The inner side walls at both ends of the protective cover are closely attached to the outer side wall of the chemical pipeline. A sealed cavity is formed between the inner wall of the protective cover and the outer side wall of the chemical pipeline. A first through - hole is opened on the side wall of the protective cover, and a collection component is installed at the first through - hole. The collection component is communicated with the sealed cavity through the first through - hole, and a filter screen is arranged at the connection between the collection component and the first through - hole.

[0008] Further, the collection component includes a first delivery pipe and a balloon. The two ends of the first delivery pipe are respectively communicated with the mouth of the balloon and the first through - hole.

[0009] Further, a one - way valve is installed at the mouth of the balloon.

[0010] Furthermore, a sealing ring is fixedly connected to the side wall of one end of the first conveying pipe close to the balloon. An annular groove adapted to the sealing ring is formed at the mouth of the balloon, and the sealing ring is clamped in the annular groove.

[0011] Furthermore, the protective cover includes an upper protective cover and a lower protective cover. Both ends of the upper protective cover and the lower protective cover are attached to the outer side wall of the chemical pipeline. A first sealing strip is fixedly connected to the surface where the upper protective cover and the lower protective cover are attached. A first groove adapted to the first sealing strip is formed in the lower protective cover, and the first sealing strip is clamped in the first groove.

[0012] Furthermore, second sealing strips are fixedly connected to the inner side walls of both ends of the upper protective cover and the lower protective cover, and the second sealing strips are attached to the outer side wall of the chemical pipeline.

[0013] Furthermore, a first clamping cover and a second clamping cover are arranged inside the protective cover. Both the first clamping cover and the second clamping cover are buckled on the side wall of the flange connection and are annular when closed.

[0014] Furthermore, a clamping block is fixedly connected to the surface where the first clamping cover and the second clamping cover are attached. A second groove adapted to the clamping block is formed in the second clamping cover, and the clamping block is clamped in the second groove.

[0015] Furthermore, third grooves are formed in the inner side walls of both the first clamping cover and the second clamping cover. When the first clamping cover and the second clamping cover are closed, the two third grooves are annular. A second through hole is formed in the second clamping cover. One end of the second through hole extends into the third groove, and the other end is communicated with a second conveying pipe, and the second conveying pipe is communicated with the collecting assembly.

[0016] Furthermore, a two-in-one-out electromagnetic valve is installed at the first through hole. One inlet end of the two-in-one-out electromagnetic valve is communicated with the sealed cavity, the other inlet end is communicated with the second conveying pipe, and the outlet end is communicated with the first through hole.

[0017] The beneficial effects of the present utility model are as follows:

[0018] For this anti-leakage safety cover of the chemical pipeline, by installing the protective cover at the flange connection of the chemical pipeline, the inner side walls of both ends of the protective cover are closely attached to the outer side wall of the chemical pipeline, and the inner cavity of the protective cover and the outer side wall of the chemical pipeline form a sealed cavity. When there is a leakage at the flange connection of the chemical pipeline, the leaked chemicals are stored in the sealed cavity, reducing the amount of chemicals discharged to the outside. By opening a first through hole in the side wall of the protective cover, a collecting assembly is installed at the first through hole, and the collecting assembly is communicated with the sealed cavity through the first through hole. The storage space is expanded, and the amount of chemicals discharged to the outside is further reduced. By providing a filter screen at the connection between the collecting assembly and the first through hole. Some harmful substances in the chemicals can be filtered, reducing environmental pollution.

[0019] Other advantages, objects and features of the present utility model will be described to some extent in the subsequent specification, and to some extent, will be apparent to those skilled in the art based on the study of the following text, or can be taught from the practice of the present utility model. The objects and other advantages of the present utility model can be achieved and obtained through the following specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural view of the present utility model;

[0021] Figure 2 is a sectional view of the present utility model;

[0022] Figure 3 is a partial sectional view of the present utility model;

[0023] Figure 4 is the present utility model Figure 3 a partial enlarged view of part A in;

[0024] Figure 5 is a schematic structural view of the upper shield of the present utility model;

[0025] Figure 6 is a schematic structural view of the lower shield of the present utility model;

[0026] Figure 7 is a schematic structural view of the first cover of the present utility model.

[0027] Figure 8 is a schematic structural view of the second cover of the present utility model.

[0028] In the figure:

[0029] 1, protective cover; 2, first through hole; 3, filter screen; 4, first conveying pipe; 5, balloon; 6, one-way valve; 7, sealing ring; 8, annular groove; 9, upper shield; 10, lower shield; 11, first sealing strip; 12, first groove; 13, second sealing strip; 14, first cover; 15, second cover; 16, clamping block; 17, second groove; 18, third groove; 19, second through hole; 20, second conveying pipe; 21, two-in-one-out solenoid valve; 22, chemical pipeline. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. The components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in a variety of different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0032] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0033] In the above description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "one side" and "the other side" is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is customarily placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, terms such as "first" and "second" are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0034] In addition, terms such as "the same" do not mean that the components are required to be absolutely the same, but there may be slight differences. The term "perpendicular" only means that the positional relationship between components is relatively more perpendicular compared to "parallel", and does not mean that the structure must be completely perpendicular, but can be slightly inclined.

[0035] Please refer to Figures 1-8 , the present utility model provides a technical solution: a chemical pipeline anti-leakage safety cover, including a protective cover 1 installed at the flange connection of a chemical pipeline 22. The inner side walls at both ends of the protective cover 1 are closely attached to the outer side wall of the chemical pipeline 22. A sealed cavity is formed between the inner wall of the protective cover 1 and the outer side wall of the chemical pipeline 22. A first through hole 2 is provided on the side wall of the protective cover 1, and a collection component is installed at the first through hole 2. The collection component communicates with the sealed cavity through the first through hole 2, and a filter screen 3 is provided at the connection between the collection component and the first through hole 2.

[0036] In this solution: the protective cover 1 is fixedly installed at the flange connection of the chemical pipeline 22, and the inner side walls of both ends of the protective cover 1 are tightly fitted with the outer side walls of the chemical pipeline 22, and the inner wall of the protective cover 1 and the outer side wall of the chemical pipeline 22 form a closed cavity. When the flange connection of the chemical pipeline 22 leaks, the leaked chemicals are stored in the closed cavity, reducing the amount of chemicals discharged to the outside.

[0037] A first through hole 2 is provided on the side wall of the protective cover 1, a collecting assembly is fixedly installed at the first through hole 2, and the collecting assembly is connected with the closed cavity through the first through hole 2. The storage space is expanded, and the amount of chemical products discharged to the outside is further reduced.

[0038] The filter screen 3 is fixedly connected to the connection between the collecting component and the first through hole 2. It can filter some harmful substances in the chemical products and reduce environmental pollution after leakage to the outside.

[0039] Working principle and usage:

[0040] Step 1: When there is a leak at the flange connection of the chemical pipeline 22, the leaked chemicals are first diffused into the closed cavity for storage, thereby reducing the amount of chemicals discharged to the outside.

[0041] Step 2: Chemicals enter the collection component through the first through hole 2, and the collection component can collect more chemicals, further slowing down the speed of chemical discharge to the outside. In addition, when chemicals enter the collection component through the first through hole 2, they need to pass through the filter 3, which filters out some harmful substances in the chemicals, reducing environmental pollution.

[0042] In this embodiment: the collecting assembly includes a first delivery tube 4 and a balloon 5 , and two ends of the first delivery tube 4 are respectively connected to the balloon opening of the balloon 5 and the first through hole 2 .

[0043] In this solution: the collection assembly includes a first delivery tube 4 and a balloon 5, and the two ends of the first delivery tube 4 are respectively connected to the balloon opening of the balloon 5 and the first through hole 2. The balloon 5 is made of soft material and can shrink and expand. The balloon 5 is flat in the contracted state and barrel-shaped in the expanded state; the chemical products leaked from the flange connection of the chemical pipeline 22 flow through the first through hole 2 and the first delivery tube 4 into the balloon 5. The balloon 5 can store more chemicals, reduce the amount of chemicals discharged to the outside, and buy more time for the staff to repair the chemical pipeline 22. After the balloon 5 expands, it can remind the staff to find the chemical pipeline leakage.

[0044] In this embodiment: a one-way valve 6 is installed at the opening of the balloon 5 .

[0045] In this solution: By installing a one-way valve 6 at the mouth of the balloon 5, the model of the one-way valve 6 can be selected as 304DN502. When the one-way valve 6 is opened, the chemical can enter and exit through the mouth of the balloon 5. When the one-way valve 6 is closed, the chemical is stored in the balloon 5. When the staff replaces the balloon 5, they first close the one-way valve 6 and then pull out the first delivery pipe 4, which can prevent the chemical stored in the balloon 5 from leaking during replacement.

[0046] In this embodiment: A sealing ring 7 is fixedly connected to the side wall of the end of the first delivery pipe 4 close to the balloon 5. An annular groove 8 adapted to the sealing ring 7 is formed at the mouth of the balloon 5, and the sealing ring 7 is snap-fitted into the annular groove 8.

[0047] In this solution: By fixedly connecting a sealing ring 7 to the side wall of the end of the first delivery pipe 4 close to the balloon 5, an annular groove 8 adapted to the sealing ring 7 is formed at the mouth of the balloon 5, and the sealing ring 7 is snap-fitted into the annular groove 8, which can improve the sealing performance at the connection between the first delivery pipe 4 and the balloon 5.

[0048] In this embodiment: The protective cover 1 includes an upper cover 9 and a lower cover 10. Both ends of the upper cover 9 and the lower cover 10 are in contact with the outer side wall of the chemical pipeline 22. A first sealing strip 11 is fixedly connected to the side of the upper cover 9 in contact with the lower cover 10. A first groove 12 adapted to the first sealing strip 11 is formed in the lower cover 10, and the first sealing strip 11 is snap-fitted into the first groove 12.

[0049] In this solution: The protective cover 1 includes an upper cover 9 and a lower cover 10. The upper cover 9 and the lower cover 10 are bolted together. Both ends of the upper cover 9 and the lower cover 10 are in contact with the outer side wall of the chemical pipeline 22. A first sealing strip 11 is fixedly connected to the side of the upper cover 9 in contact with the lower cover 10. A first groove 12 adapted to the first sealing strip 11 is formed in the lower cover 10. By snap-fitting the first sealing strip 11 into the first groove 12, the sealing performance at the connection between the upper cover 9 and the lower cover 10 can be improved.

[0050] In this embodiment: Second sealing strips 13 are fixedly connected to the inner side walls of both ends of the upper cover 9 and the lower cover 10, and the second sealing strips 13 are in contact with the outer side wall of the chemical pipeline 22.

[0051] In this solution: By fixedly connecting second sealing strips 13 to the inner side walls of both ends of the upper cover 9 and the lower cover 10, and the second sealing strips 13 are in contact with the outer side wall of the chemical pipeline 22, the sealing performance at the connection between the upper cover 9 and the lower cover 10 and the chemical pipeline 22 is improved.

[0052] In this embodiment: A first cover 14 and a second cover 15 are arranged inside the protective cover 1. Both the first cover 14 and the second cover 15 are buckled on the side wall of the flange connection and are annular when closed.

[0053] In this solution: By arranging a first cover 14 and a second cover 15 inside the protective cover 1, both the first cover 14 and the second cover 15 are buckled on the side wall of the flange connection, and they are annular when closed. The first cover 14 and the second cover 15 improve the sealing performance at the gap of the flange connection of the chemical pipeline 22.

[0054] In this embodiment: A clamping block 16 is fixedly connected to the surface of the first cover 14 that fits the second cover 15. A second groove 17 adapted to the clamping block 16 is formed on the second cover 15, and the clamping block 16 is clamped in the second groove 17.

[0055] In this solution: By fixedly connecting a clamping block 16 to the surface of the first cover 14 that fits the second cover 15, and forming a second groove 17 adapted to the clamping block 16 on the second cover 15, and clamping the clamping block 16 in the second groove 17, it not only facilitates the installation of the first cover 14 and the second cover 15, but also improves the sealing performance at the connection of the first cover 14 and the second cover 15.

[0056] In this embodiment: Third grooves 18 are formed on the inner side walls of both the first cover 14 and the second cover 15. When the first cover 14 and the second cover 15 are closed, the two third grooves 18 are annular; A second through hole 19 is formed on the second cover 15. One end of the second through hole 19 extends into the third groove 18, and the other end is communicated with a second delivery pipe 20, and the second delivery pipe 20 is communicated with the collection component.

[0057] In this solution: By forming third grooves 18 on the inner side walls of both the first cover 14 and the second cover 15, when the first cover 14 and the second cover 15 are closed, the two third grooves 18 are annular; A second through hole 19 is formed on the second cover 15. One end of the second through hole 19 extends into the third groove 18, and the other end is communicated with a second delivery pipe 20, and the second delivery pipe 20 is communicated with the collection component. When the chemical product leaks from the gap of the flange connection of the chemical pipeline 22, it enters the third groove 18 and diffuses, and enters the collection component through the second through hole 19 and the second delivery pipe 20 for storage, reducing the amount of chemical product diffused to the outside.

[0058] In this embodiment: A two-in-one-out solenoid valve 21 is installed at the first through hole 2. One of the inlet ends of the two-in-one-out solenoid valve 21 is communicated with the sealed cavity, the other inlet end is communicated with the second delivery pipe 20, and the outlet end is communicated with the first through hole 2.

[0059] In this solution: A two-in-one-out solenoid valve 21 is fixedly connected at the first through hole 2. The model of the two-in-one-out solenoid valve 21 can be selected as 2V025-08 AC220V. One inlet end of the two-in-one-out solenoid valve 21 is communicated with the sealed cavity, the other inlet end is communicated with the second delivery pipe 20, and the outlet end is communicated with the first through hole 2. By observing whether there is chemical flowing in the second delivery pipe 20, the staff can find the leakage position faster and facilitate the maintenance.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A chemical pipeline anti-leakage safety cover, comprising a protective cover (1) installed at the flange connection of the chemical pipeline, characterized in that: Both inner side walls at the two ends of the protective cover (1) are in close contact with the outer side wall of the chemical pipeline. A closed cavity is formed between the inner wall of the protective cover (1) and the outer side wall of the chemical pipeline. A first through hole (2) is formed in the side wall of the protective cover (1), and a collection assembly is installed at the first through hole (2). The collection assembly is communicated with the closed cavity through the first through hole (2), and a filter screen (3) is arranged at the connection between the collection assembly and the first through hole (2). The collection assembly includes a first conveying pipe (4) and a balloon (5). The two ends of the first conveying pipe (4) are respectively communicated with the mouth of the balloon (5) and the first through hole (2).

2. The chemical pipeline anti-leakage safety cover according to claim 1, wherein: A one-way valve (6) is installed at the mouth of the balloon (5).

3. The chemical pipeline anti-leakage safety cover according to claim 1, characterized in that: A sealing ring (7) is fixedly connected to the side wall of the first conveying pipe (4) near the balloon (5). An annular groove (8) adapted to the sealing ring (7) is formed at the mouth of the balloon (5), and the sealing ring (7) is clamped in the annular groove (8).

4. The chemical pipeline anti-leakage safety cover according to claim 1, wherein: The protective cover (1) includes an upper protective cover (9) and a lower protective cover (10). Both ends of the upper protective cover (9) and the lower protective cover (10) are in contact with the outer side wall of the chemical pipeline. A first sealing strip (11) is fixedly connected to the surface where the upper protective cover (9) and the lower protective cover (10) are in contact. A first groove (12) adapted to the first sealing strip (11) is formed in the lower protective cover (10), and the first sealing strip (11) is clamped in the first groove (12).

5. The chemical pipeline anti-leakage safety cover according to claim 4, characterized in that: Second sealing strips (13) are fixedly connected to the inner side walls at both ends of the upper protective cover (9) and the lower protective cover (10), and the second sealing strips (13) are in contact with the outer side wall of the chemical pipeline.

6. The chemical pipeline anti-leakage safety cover according to claim 1, characterized in that: A first clamping cover (14) and a second clamping cover (15) are arranged inside the protective cover (1). Both the first clamping cover (14) and the second clamping cover (15) are buckled on the side wall at the flange connection and are annular when closed.

7. The chemical pipeline anti-leakage safety cover according to claim 6, characterized in that: A clamping block (16) is fixedly connected to the surface where the first clamping cover (14) and the second clamping cover (15) are in contact. A second groove (17) adapted to the clamping block (16) is formed in the second clamping cover (15), and the clamping block (16) is clamped in the second groove (17).

8. The chemical pipeline anti-leakage safety cover according to claim 6, characterized in that: Third grooves (18) are formed in the inner side walls of both the first clamping cover (14) and the second clamping cover (15). When the first clamping cover (14) and the second clamping cover (15) are closed, the two third grooves (18) are annular. A second through hole (19) is formed in the second clamping cover (15). One end of the second through hole (19) extends into the third groove (18), and the other end is communicated with a second conveying pipe (20). The second conveying pipe (20) is communicated with the collection assembly.

9. The chemical pipeline anti-leakage safety cover according to claim 8, characterized in that: A two-in-one-out electromagnetic valve (21) is installed at the first through hole (2). One inlet end of the two-in-one-out electromagnetic valve (21) is communicated with the closed cavity, the other inlet end is communicated with the second conveying pipe (20), and the outlet end is communicated with the first through hole (2).

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