Safety cover for chemical pipeline

Abstract

The utility model discloses a chemical pipeline safety cover, which belongs to the field of chemical pipeline safety equipment, and comprises a cover shell which comprises an upper shell and a lower shell, one end of the three-way valve is communicated with the housing, the other two ends of the three-way valve are respectively provided with a connecting port, and one connecting port is connected with a collecting bottle; the valve part is arranged on the upper shell, the valve part comprises a mounting pipe, a one-way valve is arranged in the mounting pipe, a closed space can be formed at the connecting port of the chemical pipeline through cooperation of the upper shell and the lower shell, then the chemical pipeline is protected, meanwhile, gas leakage is avoided, and through use of a pressure gauge and a gas detector, the safety of the chemical pipeline is improved. Whether gas leaks or not can be monitored in real time, then safety guarantee is improved, meanwhile, under the cooperation of the alarm and the positioner, positioning maintenance can be facilitated for maintenance personnel, the maintenance efficiency is improved, convenience is brought to use, the three-way valve is connected with the collection bottle and the gas extractor, leakage media are collected, and secondary leakage is not likely to happen.

Description

Technical Field

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

[0002] Chemical pipelines are used to transport toxic, harmful, and corrosive media, and are mainly used in industries such as chemical engineering, medicine, metallurgy, environmental protection, water supply and drainage, and petroleum, with very wide applications. Among them, after long-term use, the flange joints of chemical pipelines often have medium leakage phenomena, posing a great threat to the production environment and personal safety. Therefore, safety protection covers are often set at the joints of chemical pipelines.

[0003] However, the commonly used safety protection covers at the joints of chemical pipelines at present include an upper shell and a lower shell that are connected to each other. The middle parts of the upper and lower shells cover the flange connection head position, and both ends of the upper and lower shells are clamped on the pipelines on both sides of the flange joint. Such protection covers are not convenient for collecting and recycling the leaked medium, which is likely to cause an excessive amount of leaked medium accumulated in the protection cover and prone to problems such as secondary leakage, and there are still potential safety hazards. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problems mentioned in the above background art that it is not convenient to collect and recycle the leaked medium, which is likely to cause an excessive amount of leaked medium accumulated in the protection cover and prone to problems such as secondary leakage.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A safety cover for chemical pipelines, comprising: a cover shell, which includes an upper shell and a lower shell; a three-way valve, one end of which is communicated with the cover shell, and the other two ends are respectively provided with connection ports, and a collection bottle is connected to one of the connection ports; a valve member, which is arranged on the upper shell, and the valve member includes an installation pipe, and a one-way valve is arranged inside the installation pipe, and the leaked medium is collected through the collection bottle.

[0007] Preferably, the valve member further includes a screw rod threadedly connected to the inner wall of the installation pipe. The screw rod is hollow, and the one-way valve is installed inside the screw rod.

[0008] Preferably, the lower end of the installation pipe extends into the upper shell. A plurality of connecting plates are connected to the inner wall of the lower end of the screw rod. The plurality of connecting plates are evenly distributed in the circumferential direction, and there is a gap between two adjacent connecting plates. The lower end of the connecting plate is connected with a blocking plate for blocking the bottom of the installation pipe.

[0009] Preferably, a concave groove is formed on the bottom surface of the installation pipe, and an insertion ring adapted to the concave groove is connected to the blocking plate for sealing the installation pipe.

[0010] Preferably, a circular cover is provided at the upper end of the screw rod. The circular cover is connected to the outer surface of the screw rod through a connecting rod, and a channel communicating the inside and outside of the screw rod is formed between the circular cover and the screw rod through the connecting rod.

[0011] Preferably, the diameter of the circular cover is larger than that of the screw rod, and a turning handle is connected to the circular cover.

[0012] Preferably, a pressure gauge, a gas detector, an alarm and a locator are installed on the upper shell.

[0013] Preferably, the upper shell has a convex shell, and a through groove communicating with the inside of the upper shell is provided on the inner wall of the convex shell.

[0014] Preferably, a transparent cover is connected to the upper end of the convex shell for placing test paper.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model has a simple structure and is convenient to use. Through the cooperation of the upper shell and the lower shell, a closed space can be formed at the connection of the chemical pipeline, thereby protecting the chemical pipeline, avoiding gas leakage at the same time. Through the use of the pressure gauge and the gas detector, it can monitor whether the gas leaks in real time, thereby improving the safety guarantee. At the same time, with the cooperation of the alarm and the locator, it is convenient for maintenance personnel to locate and repair, improving the repair efficiency and bringing convenience to use. By connecting the three-way valve with the collection bottle and the air extraction device, the leaked medium can be collected and is not easily leaked again;

[0017] Through the test paper arranged in the transparent cover, after the medium leaks, it contacts the test paper through the through groove and makes the test paper react. It can be observed through the transparent cover. The test paper, combined with the pressure gauge, the gas detector, the alarm and the locator, increases the detection success rate, and the damage of one set does not affect the other set. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0020] Figure 2 It is a schematic diagram of the separation of the upper shell and the lower shell of the present utility model.

[0021] Figure 3Schematic cross-sectional view of the lower housing of the present utility model.

[0022] Figure 4 Schematic cross-sectional view of the upper housing and the mounting pipe of the present utility model.

[0023] Figure 5 Schematic separated cross-sectional view of the mounting pipe, screw, and circular cover of the present utility model.

[0024] Explanation of drawing numbers: 1. Cover shell; 11. Upper housing; 12. Lower housing; 13. Raised shell; 14. Through groove; 15. Transparent cover; 2. Three-way valve; 21. Connection port; 3. Collection bottle; 31. Rotating valve; 4. Valve member; 41. Mounting pipe; 411. Concave groove; 42. Check valve; 43. Screw; 44. Connecting plate; 45. Sealing plate; 46. Insert ring; 47. Circular cover; 48. Connecting rod; 49. Rotating handle; 5. Pressure gauge; 6. Gas detector; 7. Alarm; 8. Positioner; 9. Sealing rubber. Detailed implementation manners

[0025] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious deformations. The basic principles defined in the following description can be used in other implementation schemes, deformation schemes, improvement schemes, equivalent schemes, and other technical schemes that do not deviate from the spirit and scope of the present utility model.

[0027] Those skilled in the art should understand that in the disclosure of the present utility model, the terms "longitudinal", "transverse", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or position based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present utility model in a simplified manner, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations to the present utility model.

[0028] It can be understood that the term "one" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of one component can be one, and in other embodiments, the number of this component can be multiple. The term "one" should not be construed as a limitation on the number.

[0029] Please refer to Figures 1 - 5, a safety cover for chemical pipelines, comprising a housing 1, which includes an upper housing 11 and a lower housing 12. The upper housing 11 and the lower housing 12 are sleeved on the pipeline connection and fastened by bolts and nuts, and a sealing rubber 9 is provided between the upper housing 11 and the lower housing 12; a three-way valve 2, one end of which is communicated with the housing 1, and the other two ends are respectively provided with connection ports 21. A collection bottle 3 is connected to one of the connection ports 21. A rotary valve 31 is provided at the bottle mouth of the collection bottle 3, and the bottle mouth can be closed through the rotary valve 31. The inner wall of the lower housing 12 is inclined, and the inclined bottom end is located at the connection of the three-way valve 2. The collection bottle 3 is in a communicating state with the inside of the housing 1. When the medium drips into the lower housing 12, the medium flows into the collection bottle 3. The collection bottle 3 is transparent, facilitating the observation of whether the leaked medium is collected;

[0030] A valve member 4 is provided on the upper housing 11. The valve member 4 includes an installation pipe 41, and the installation pipe 41 is arranged out of alignment with the flange on the pipeline. A check valve 42 is arranged inside the installation pipe 41. The check valve 42 is a prior art. After the medium enters the collection bottle 3, connect the other connection port 21 to an air extraction device. The air extraction device is a prior art and will not be described in detail here. Then close the connection between the collection bottle 3 and the housing 1, so that the housing 1 is communicated with the air extraction device, and then the gas in the housing 1 is pumped away. Under negative pressure, external air enters the housing 1. After pumping, close the connection between the air extraction device and the connection port 21. It should be noted that if the pipeline connection is located indoors, in order to prevent the medium from leaking indoors, it is more necessary to pump away the gas in the housing 1.

[0031] In order to prevent the check valve 42 from being affected by the leaked medium and enable it to be used for a long time, the valve member 4 further includes a screw rod 43 threadedly connected to the inner wall of the installation pipe 41. The screw rod 43 is hollowly arranged, and the check valve 42 is installed inside the screw rod 43. The lower end of the installation pipe 41 extends into the upper housing 11. A plurality of connecting plates 44 are connected to the inner wall of the lower end of the screw rod 43. The plurality of connecting plates 44 are evenly distributed in the circumferential direction, and there is a gap between two adjacent connecting plates 44. The lower end of the connecting plate 44 is connected to a sealing plate 45 for blocking the bottom of the installation pipe 41. A concave groove 411 is formed on the bottom surface of the installation pipe 41, and an insertion ring 46 adapted to the concave groove 411 is connected to the sealing plate 45. When not pumping air, the sealing plate 45 closes the bottom of the installation, so that the inside of the housing 1 cannot be communicated with the outside through the check valve 42.

[0032] A circular cover 47 is provided at the upper end of the screw 43. The circular cover 47 is connected to the outer surface of the screw 43 through a connecting rod 48. A channel communicating the inside and outside of the screw 43 is formed between the circular cover 47 and the screw 43 through the connecting rod 48. The diameter of the circular cover 47 is larger than that of the screw 43. The circular cover 47 prevents sundries from entering the screw 43 and blocking the one-way valve 42. A turning handle 49 is connected to the circular cover 47. A pressure gauge 5, a gas detector 6, an alarm 7 and a locator 8 are installed on the upper housing 11. The pressure sensor and the gas detector 6 work to detect the gas condition at the connection in real time. When gas leakage occurs, the alarm 7 gives an alarm. At the same time, the locator 8 sends the position to the monitoring end, so that maintenance personnel can locate and then quickly carry out repairs.

[0033] Before air extraction, first turn the rotary valve 31 to close the opening of the collection bottle 3. Then connect the air extraction device to the housing 1 through the valve body of the three-way valve 2. Then turn the turning handle 49. The turning handle 49 makes the circular cover 47 rotate, thereby driving the bolt to descend, so that the inside of the housing 1 is communicated with the inside of the screw 43 through the gap. Under the negative pressure condition in the housing 1, gas enters the housing 1 through the channel, the one-way valve 42 and the gap.

[0034] In order to prevent damage to the detection components such as the pressure gauge 5, the gas detector 6, the alarm 7 and the locator 8, a test paper detection is provided as follows. There is a raised housing 13 on the upper housing 11. A through groove 14 connecting the inside of the upper housing 11 is opened on the inner wall of the raised housing 13. A transparent cover 15 is connected to the upper end of the raised housing 13. The test paper is placed in the raised housing 13 and the transparent cover 15. After the medium leaks, it contacts the test paper through the through groove 14 and makes the test paper react. It can be observed through the transparent cover. The test paper, combined with the pressure gauge 5, the gas detector 6, the alarm 7 and the locator 8, increases the detection success rate. The damage of one set does not affect the other set.

[0035] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the drawings are only examples and do not limit the present invention. The object of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and described in the embodiments. Without departing from the said principles, the embodiments of the present invention can have any deformation or modification.

Claims

1. A chemical pipeline safety cover, characterized in that: include: A housing (1) comprising an upper housing (11) and a lower housing (12); A three-way valve (2), one end of which is in communication with the housing (1), and the other two ends of which are respectively provided with connection ports (21), one of the connection ports (21) being connected to a collecting bottle (3); A valve component (4) is arranged on the upper housing (11), wherein the valve component (4) comprises a mounting tube (41), wherein a one-way valve (42) is arranged in the mounting tube (41).

2. A chemical pipeline safety cover according to claim 1, characterized in that: The valve member (4) further comprises a screw rod (43) threadedly connected to the inner wall of the mounting tube (41); the screw rod (43) is hollow, and the one-way valve (42) is mounted inside the screw rod (43).

3. A chemical pipeline safety cover according to claim 2, characterized in that: The lower end of the mounting tube (41) extends into the interior of the upper shell (11); a plurality of connecting plates (44) are connected to the inner wall of the lower end of the screw rod (43); the plurality of connecting plates (44) are evenly distributed in the circumferential direction; there is a gap between two connected connecting plates (44); and the lower end of the connecting plate (44) is connected to a blocking plate (45) for blocking the bottom of the mounting tube (41).

4. A chemical pipeline safety cover according to claim 3, characterized in that: A recessed groove (411) is provided on the bottom surface of the mounting tube (41), and an insert ring (46) matching the recessed groove (411) is connected to the blocking plate (45).

5. A chemical pipeline safety cover according to claim 4, characterized in that: A circular cover (47) is provided at the upper end of the screw rod (43). The circular cover (47) is connected to the outer surface of the screw rod (43) via a connecting rod (48). A channel is formed between the circular cover (47) and the screw rod (43) via the connecting rod (48) to connect the inside and outside of the screw rod (43).

6. A chemical pipeline safety cover according to claim 5, characterized in that: The diameter of the circular cover (47) is greater than the diameter of the screw rod (43), and a turning handle (49) is connected to the circular cover (47).

7. A chemical pipeline safety cover according to claim 1, characterized in that: The upper shell (11) is mounted with a pressure gauge (5), a gas detector (6), an alarm (7) and a positioner (8).

8. A chemical pipeline safety cover according to claim 1, characterized in that: The upper shell (11) is provided with a protruding shell (13), and a through groove (14) connected to the interior of the upper shell (11) is provided on the inner wall of the protruding shell (13).

9. A chemical pipeline safety cover according to claim 8, characterized in that: The upper end of the raised shell (13) is connected to a transparent cover (15).

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