Leak-proof chemical pipeline safety cover

Abstract

The utility model belongs to the technical field of chemical pipeline safety protection, and particularly relates to a leakproof chemical pipeline safety cover which comprises a bottom cover and a top cover, a connecting flange on a chemical pipeline is located in the bottom cover and the top cover, and the bottom cover and the top cover are both in a hemispherical cavity shape and are tightly attached to the chemical pipeline through an external member. The bottom of the bottom cover is connected with a connecting pipe, a detector is inserted into the bottom of the bottom cover, and the detector comprises a liquid level detection sensor and a signal processing module and is used for detecting the accumulation condition of liquid in the bottom cover and the top cover and transmitting an alarm signal in time. The locking head, the nut and the sealing gasket arranged on the main body further enhance the sealing performance and the installation stability of the whole structure.

Description

Technical Field

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

[0002] Chemical pipelines are widely used in chemical production, and their main function is to transport various chemical media. However, due to the corrosive, high-pressure or volatile characteristics of most chemical media, the chemical pipelines may experience seal failure or flange connection loosening during use, resulting in chemical substance leakage. Such leakage not only pollutes the surrounding environment but also poses a serious safety threat to the operators inside the factory. Therefore, how to effectively prevent the leakage of chemical media in chemical pipelines is one of the technical problems that need to be solved urgently in the current field of chemical equipment safety.

[0003] At present, most of the anti-leakage measures on the market adopt adding sealing devices outside the pipeline or installing additional sealing rings at the flange joints. However, the sealing effects of these existing technologies are limited, and in the face of the vibration of chemical pipelines or the fluctuation of medium pressure, seal failure is likely to occur, and it is impossible to effectively prevent liquid leakage for a long time. In addition, some existing protection devices lack an effective liquid leakage monitoring mechanism, resulting in the leakage situation not being detected and processed in time, thus increasing the safety hazards. Therefore, a safety protection cover with a more reliable sealing structure and capable of monitoring leakage is needed to improve the safety and reliability of the use of chemical pipelines. Content of the Utility Model

[0004] Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a chemical pipeline safety cover for preventing leakage, which can effectively improve the sealing performance, prevent loosening and liquid leakage caused by pipeline vibration; at the same time, the combination of the detector and the liquid collecting pipe can detect and provide early warning in time when leakage occurs, so as to reduce the safety and environmental risks brought by leakage.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A chemical pipeline safety cover for preventing leakage, comprising a bottom cover and a top cover, and the connecting flange on the chemical pipeline is located inside the bottom cover and the top cover;

[0007] Both the bottom cover and the top cover are set as hemispherical cavities;

[0008] Both sides of the bottom cover and the top cover are provided with kits;

[0009] During installation, the kit fits on the pipeline, and a sealing clip is arranged between the kit and the chemical pipeline. The cross-section of the sealing clip is semi-circular, and a splicing column is fixedly connected to one end of the sealing clip, and a splicing groove corresponding to the splicing column is opened at the other end of the sealing clip;

[0010] A connecting pipe is fixedly connected to the bottom of the bottom cover, and a detector is inserted into the connecting pipe. The detector is used to detect whether there is accumulated liquid in the bottom cover and the top cover.

[0011] Furthermore, connecting plates are fixedly connected to the outer edges of the open ends of the bottom cover and the top cover;

[0012] Connecting holes are penetrated through the connecting plates.

[0013] Furthermore, a baffle is fixedly connected to the bottom of the connecting pipe, and a threaded hole is penetrated through the baffle;

[0014] The detector includes a main body installed on the threaded hole, and a first connecting thread matching the threaded hole is opened on the main body.

[0015] Furthermore, a retaining ring is fixedly connected to the outer side of the upper end of the main body;

[0016] A second sealing groove is opened at the bottom of the retaining ring;

[0017] A first sealing groove is opened at the top of the baffle;

[0018] A sealing ring is arranged between the retaining ring and the baffle;

[0019] The sealing ring is snapped into the first sealing groove and the second sealing groove.

[0020] Furthermore, the sealing ring includes an inner ring, and an outer ring is fixedly connected to the outer side of the inner ring.

[0021] Furthermore, a detection head is fixedly connected to the top of the retaining ring;

[0022] A locking head and a signal wire are arranged at the bottom of the main body.

[0023] Furthermore, a second connecting thread is opened on the outer side of the main body, and a nut is connected to the main body. A sealing gasket is arranged on the top of the nut.

[0024] Compared with the prior art, the beneficial effects of the present utility model are:

[0025] First, the present utility model provides a more reliable sealing structure. Both the bottom cover and the top cover adopt a hemispherical cavity shape, which can comprehensively cover the connecting flange of the chemical pipeline, ensuring that the flange connection will not cause harm to the environment or operators due to medium leakage during operation. By setting the combination of the kit and the sealing clip, the stability of the protective cover during installation is ensured. The sealing clip realizes annular sealing through the cooperation of the splicing column and the splicing groove, further improving the sealing performance of the entire structure and preventing sealing failure caused by pipeline vibration.

[0026] Secondly, a multi-stage sealing structure is designed in the present utility model. Sealing rings of the inner ring and the outer ring are arranged between the retaining ring and the baffle, and are clamped in the sealing grooves of the baffle and the retaining ring. This structure forms a double sealing protection. Through the cooperation of the first sealing groove and the second sealing groove, an efficient sealing effect is achieved, effectively preventing the leakage risk caused by the internal pressure fluctuation of the chemical pipeline, improving the overall sealing performance, and ensuring that the chemical medium will not leak to the external environment.

[0027] The detector in the present utility model can timely detect the liquid accumulation in the bottom cover and the top cover by adopting a liquid level detection sensor and a signal processing module. The ultrasonic liquid level sensor used by the detector cooperates with the microcontroller chip to perform real-time detection and signal processing of liquid leakage. When leakage occurs, the liquid level detection sensor transmits the signal to the signal processing module, and the control system makes a response of alarm or automatic processing. This detection and alarm mechanism ensures that a timely response can be made when leakage occurs, reduces potential safety hazards, and effectively reduces the risk of environmental pollution.

[0028] In addition, through the multiple designs of the locking head, nut, and sealing gasket arranged on the main body, it is ensured that the detector will not become loose due to pipeline vibration during use. The cooperation of the locking head and the nut further enhances the installation stability of the detector. The use of the sealing gasket provides additional sealing protection, preventing liquid leakage when the detector becomes loose at the connection part, thereby ensuring the operation safety and reliability of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of the present utility model;

[0030] Figure 2 is a schematic exploded structural diagram of the present utility model;

[0031] Figure 3 is a schematic structural diagram of the bottom cover of the present utility model;

[0032] Figure 4 is the Figure 3 enlarged schematic diagram at A in this

[0033] Figure 5Schematic diagram of the structure of the sealing clip of the present utility model;

[0034] Figure 6 Schematic diagram of the structure of the detector of the present utility model;

[0035] Figure 7 is Figure 6 Enlarged schematic diagram at position B in

[0036] Figure 8 Schematic diagram of the structure of the sealing ring of the present utility model;

[0037] Figure 9 Schematic diagram of the structure of the nut of the present utility model.

[0038] In the attached drawings, the list of components represented by each label is as follows:

[0039] 1. Bottom cover; 11. Kit; 12. Connecting plate; 121. Connecting hole; 13. Connecting pipe; 14. Baffle; 141. Threaded hole; 142. First sealing groove;

[0040] 2. Top cover;

[0041] 3. Detector;

[0042] 31. Main body; 311. First connecting thread; 312. Second connecting thread; 32. Retaining ring; 321. Second sealing groove; 33. Detection head; 34. Locking head; 35. Signal wire;

[0043] 4. Nut; 41. Sealing gasket;

[0044] 5. Sealing clip; 51. Splicing column; 52. Splicing groove;

[0045] 6. Sealing ring; 61. Inner ring; 62. Outer ring. Detailed implementation manners

[0046] In order to make the purpose and advantages of the present utility model clearer, the present utility model will be specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific implementation manners of the present utility model, and does not strictly limit the specific scope of protection claimed by the present utility model.

[0047] Refer to Figures 1-9, A chemical pipeline safety cover for preventing leakage, including a bottom cover 1 and a top cover 2, and the connecting flange on the chemical pipeline is located inside the bottom cover 1 and the top cover 2; both the bottom cover 1 and the top cover 2 are set as hemispherical cavity shapes, which can effectively cover the flange area, thus providing all-round protection for the flange connection, and avoiding polluting the environment or causing harm to personnel due to the leakage of chemical media; on both sides of the bottom cover 1 and the top cover 2, there are sets 11, which are used to further enhance the stability of the bottom cover 1 and the top cover 2 during the installation process, ensuring that the bottom cover 1 and the top cover 2 will not be displaced or loosened under the action of pipeline vibration or external force; during installation, the set 11 fits on the pipeline, and there is a sealing clip 5 between the set 11 and the chemical pipeline. The cross-section of the sealing clip 5 is set as a semi-circular ring, which can form a tight closed structure around the pipeline, effectively blocking the leakage of chemical media; one end of the sealing clip 5 is fixedly connected with a splicing column 51, which is used to realize the stable connection between the sealing clips and ensure the integrity of the annular seal. The other end is provided with a splicing groove 52 corresponding to the splicing column 51. Through the engagement of the splicing groove 52 and the splicing column 51, the sealing clip 5 can firmly surround the chemical pipeline to form an annular seal, further improving the sealing effect of the overall structure.

[0048] A connecting pipe 13 is fixedly connected to the bottom of the bottom cover 1. The connecting pipe 13 is designed to collect the flowing liquid in case of leakage, thus avoiding the liquid from overflowing to the surrounding environment; a detector 3 is inserted into the connecting pipe 13, and the detector 3 is used to detect whether there is accumulated liquid in the bottom cover 1 and the top cover 2; when the flange connection of the chemical pipeline leaks liquid due to pressure fluctuation or other factors, the liquid will be collected through the connecting pipe 13 and detected in real time by the detector 3. Through the signal output of the detector 3, maintenance personnel can be reminded in time to take measures to avoid the expansion of the accident.

[0049] Refer to Figure 3 , A connecting plate 12 is fixedly connected to the outer edge of the open end of the bottom cover 1 and the top cover 2. The connecting plate 12 is used to firmly connect the bottom cover 1 and the top cover 2, ensuring that they will not be displaced or separated due to external factors when covering the flange; a connecting hole 121 is penetrated through the connecting plate 12, and the connecting hole 121 is used for the bolt to pass through, so that the connecting plate 12 can be fastened by bolts, thereby realizing the reliable connection between the bottom cover 1 and the top cover 2 and ensuring the stability of the entire leakage prevention structure.

[0050] Refer to Figures 4-6, a baffle 14 is fixedly connected to the bottom of the connecting pipe 13. A threaded hole 141 is penetratingly formed in the baffle 14. The design of the threaded hole 141 enables the main body 31 to be stably installed on the baffle 14; the detector 3 includes the main body 31 installed on the threaded hole 141. A first connecting thread 311 matching the threaded hole 141 is formed in the main body 31. By the threaded connection between the first connecting thread 311 and the threaded hole 141, it can be ensured that the main body 31 will not loosen when the pipeline vibrates, so as to ensure that the detection position of the detector 3 remains accurate and the leaked chemical medium can be detected in time.

[0051] Refer to Figures 4-8 , a retaining ring 32 is fixedly connected to the outer side of the upper end of the main body 31. The function of the retaining ring 32 is to enhance the overall sealing effect through its special sealing design; a second sealing groove 321 is formed in the bottom of the retaining ring 32. The second sealing groove 321 is used to engage with the inner ring of the sealing ring 6, so as to further improve the sealing performance between the main body 31 and the baffle 14; a first sealing groove 142 is formed in the top of the baffle 14. The first sealing groove 142 cooperates with the second sealing groove 321 of the retaining ring 32. Double sealing is achieved through the sealing ring 6. The sealing ring 6 can be simultaneously engaged into the first sealing groove 142 and the second sealing groove 321, so as to form a stable and reliable sealing structure between the retaining ring 32 and the baffle 14 and prevent the sealing failure caused by pipeline vibration or pressure fluctuation.

[0052] Refer to Figure 8 , the sealing ring 6 includes an inner ring 61. An outer ring 62 is fixedly connected to the outer side of the inner ring 61. The combination of the inner ring 61 and the outer ring 62 makes the sealing structure more stable. Through the multi-stage sealing of the inner ring 61 and the outer ring 62, the sealing performance between the main body 31 and the baffle 14 can be effectively improved, ensuring that the chemical medium will not leak to the external environment.

[0053] Refer to Figure 6 , a detection head 33 is fixedly connected to the top of the retaining ring 32. The detection head 33 is used to monitor the leakage situation in the bottom cover 1 and the top cover 2 in real time; a locking head 34 is arranged at the bottom of the main body 31. Through the cooperation with the main body 31, the detector 3 can be firmly installed on the baffle 14 to avoid loosening due to external vibration; a signal line 35 is also connected to the bottom of the main body 31. The signal line 35 is used to transmit the detection signal of the detector 3, ensuring that the leakage information can be fed back to the control system in time, so as to take corresponding safety measures.

[0054] The detector 3 includes a liquid level detection sensor and a signal processing module. The liquid level detection sensor is an ultrasonic liquid level sensor with the model of Honeywell 39FRA-101. This sensor is installed at the upper part of the main body 31 and can sensitively monitor the liquid level change by directly contacting the accumulated liquid in the connecting pipe 13. When the connecting flange leaks, the leaked chemical medium will gather inside the bottom cover 1 and the top cover 2 and flow into the area where the detector 3 is located through the connecting pipe 13. The liquid level detection sensor will detect the presence of the liquid and the liquid level change in real time.

[0055] When the liquid is detected, the liquid level sensor will transmit the signal to the signal processing module of the detector 3. The signal processing module uses a microcontroller chip of Texas Instruments TMS320F28035. This chip is built-in with a high-performance analog-to-digital converter (ADC) and can collect and process the analog signal from the liquid level detection sensor in real time. The signal processing module judges whether there is a liquid leakage in the connecting flange according to the signal strength and duration provided by the sensor and transmits the result to the control system in the form of a digital signal through the signal line 35.

[0056] The control system can select a Siemens LOGO! 230RCE small PLC. When the control system receives the signal from the detector 3, it will trigger an alarm device according to the set parameters, such as an alarm sound or the lighting of an indicator light, to prompt the maintenance personnel to take necessary safety measures. In addition, the control system can further take emergency operations such as automatically closing the valve according to the leakage situation, so as to reduce the impact of the leakage on the production environment and personnel.

[0057] To ensure the reliability of the detector 3, the detection head 33 is specially designed to be able to effectively form a stable contact with the connecting pipe 13 and is firmly locked on the main body 31 by the locking head 34. After the detector 3 is installed, it can keep its detection position unchanged, and even if the pipeline vibrates slightly during operation, it will not affect its detection accuracy.

[0058] In this embodiment, the design focus of the detector 3 is on the rapid detection of the leaked liquid and the accurate transmission of the signal, ensuring that when there is a liquid leakage in the flange connection of the chemical pipeline, it can be detected in time and feedback can be provided, so that the maintenance personnel can quickly take preventive measures and minimize the safety risks and environmental pollution brought by the chemical medium leakage.

[0059] Refer to Figure 9, on the outer side of the main body 31, a second connecting thread 312 is provided. The second connecting thread 312 is used to cooperate with the nut 4. The nut 4 is screwed onto the main body 31. A sealing gasket 41 is provided on the top of the nut 4. The sealing gasket 41 is used to provide additional sealing between the nut 4 and the main body 31, avoiding leakage caused by the loosening of the nut 4, and further enhancing the sealing reliability of the entire device.

[0060] The working principle of the present utility model is as follows:

[0061] During installation, first, the sealing ring 6 is sleeved on the main body 31, and the sealing ring 6 is snapped into the second sealing groove 321 opened at the bottom of the retaining ring 32. Then, the main body 31 is inserted into the threaded hole 141, and a wrench is used to engage with the locking head 34. Then, the locking head 34 is rotated clockwise. As the locking head 34 rotates, the first connecting thread 311 will be tightened on the threaded hole 141, and thus the retaining ring 32 and the baffle 14 are hermetically connected;

[0062] The sealing ring 6 is composed of an inner ring 61 and an outer ring 62, and thus a stepped sealing structure can be formed between the retaining ring 32 and the baffle 14, thereby improving its sealing performance;

[0063] Then, the nut 4 is screwed onto the second connecting thread 312 provided on the outer side of the main body 31. By providing the nut 4, the position of the detector 3 can be further locked, avoiding the loosening of the detector 3 due to the vibration of the pipeline;

[0064] Next, the sealing clip 5 is attached to the chemical pipeline, and the two sealing clips 5 are inserted together to form a ring;

[0065] Then, the bottom cover 1 and the top cover 2 are buckled on the flange of the chemical pipeline, and the sealing clip 5 is located within the two kits 11, and bolts are used to connect the connecting plates 12 together;

[0066] During use, when liquid leaks at the flange connection of the chemical pipeline, the leaked liquid will gather in the connecting pipe 13 and be detected by the detection head 33.

[0067] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model. The structures, devices, and operation methods not specifically described and explained in the present utility model, unless otherwise specifically stated and limited, are implemented according to the conventional means in this field.

Claims

1. A leak-proof chemical pipeline safety cover, characterized in that: It comprises a bottom cover (1) and a top cover (2), and the connecting flange on the chemical pipeline is located inside the bottom cover (1) and the top cover (2); The bottom cover (1) and the top cover (2) are both configured to be hemispherical cavity shapes; Both sides of the bottom cover (1) and the top cover (2) are provided with a kit (11); During installation, the kit (11) is attached to the pipeline, and a sealing clamp (5) is provided between the kit (11) and the chemical pipeline, wherein the cross section of the sealing clamp (5) is arranged in a semi-circular shape, and one end of the sealing clamp (5) is fixedly connected to a splicing column (51), and the other end of the sealing clamp (5) is provided with a splicing groove (52) corresponding to the splicing column (51); A connecting pipe (13) is fixedly connected to the bottom of the bottom cover (1), a detector (3) is inserted into the connecting pipe (13), and the detector (3) is used to detect whether there is liquid accumulation in the bottom cover (1) and the top cover (2).

2. The anti-leakage chemical pipeline safety cover according to claim 1 is characterized by: A connecting plate (12) is fixedly connected to the outer edges of the opening ends of the bottom cover (1) and the top cover (2); The connecting plate (12) is provided with a connecting hole (121) extending therethrough.

3. The anti-leakage chemical pipeline safety cover according to claim 1 is characterized by: The bottom of the connecting pipe (13) is fixedly connected to a baffle (14), and a threaded hole (141) is formed through the baffle (14); The detector (3) comprises a main body (31) mounted on the threaded hole (141), and a first connecting thread (311) matching the threaded hole (141) is provided on the main body (31).

4. The anti-leakage chemical pipeline safety cover according to claim 3 is characterized by: A retaining ring (32) is fixedly connected to the outer side of the upper end of the main body (31); A second sealing groove (321) is formed at the bottom of the retaining ring (32); A first sealing groove (142) is formed on the top of the baffle (14); A sealing ring (6) is provided between the baffle ring (32) and the baffle plate (14); The sealing ring (6) is engaged in the first sealing groove (142) and the second sealing groove (321).

5. The anti-leakage chemical pipeline safety cover according to claim 4 is characterized by: The sealing ring (6) comprises an inner ring (61), and an outer ring (62) is fixedly connected to the outer side of the inner ring (61).

6. The anti-leakage chemical pipeline safety cover according to claim 4 is characterized by: A detection head (33) is fixedly connected to the top of the retaining ring (32); A locking head (34) and a signal line (35) are provided at the bottom of the main body (31).

7. The anti-leakage chemical pipeline safety cover according to claim 6 is characterized by: A second connecting thread (312) is provided on the outer side of the main body (31), and a nut (4) is connected to the main body (31), with a sealing gasket (41) being provided on the top of the nut (4).

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