Temporary compensation device capable of judging backflow of vertical pipe section

Abstract

The utility model discloses a temporary compensation device capable of judging backflow of a vertical pipe section, which comprises a shell connected with the vertical pipe section and a circular groove extending along the radial direction of the vertical pipe section, the circular groove penetrates through the shell, two sealing components are oppositely arranged in the shell, the two sealing components are both hinged with the shell, and the sealing components are connected with the shell. The sealing assemblies are arranged in the shell and can be combined into a complete sealing structure when materials flow back, the hinge points of the sealing assemblies and the shell are located above the circular groove, the sealing assembly close to the circular groove is further connected with a plug matched with an end opening of the circular groove, and the other end of the circular groove is connected with a medium backflow warning assembly. The medium backflow warning device is simple in structure, durable and stable, when a medium flows back, the two sealing assemblies rotate around the shell to form a complete sealing structure, the medium is cut off, meanwhile, the medium flows into the medium backflow warning assembly through the circular groove, and an operator can conveniently observe the backflow condition.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline safety technology, and in particular relates to a temporary compensation device that can detect backflow in a vertical pipe section. Background Technology

[0002] Pipelines, as carriers of transport media, are ubiquitous in various industries. They are mainly used in water supply and drainage, heating, gas supply, and petrochemical and hazardous chemical transportation. Since pipeline systems also include fittings, valves, etc., in the top-down flow of material media in pipeline transportation, there may be problems such as large-scale backflow of media caused by check valve failure or pump reversal, which may lead to pollution or other safety hazards. Utility Model Content

[0003] The purpose of this invention is to overcome the defects of the prior art and provide a temporary compensation device that can detect backflow in a vertical pipe section. It has a simple structure, is durable and stable. The two closed components arranged opposite each other separate and close the circular groove when the medium is flowing in the forward direction, without affecting the normal flow of the medium. When the medium is flowing back, the two closed components rotate around the shell to form a complete closed structure, which cuts off the medium. At the same time, the medium flows into the medium backflow warning component through the circular groove, which makes it convenient for operators to observe the backflow situation.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A temporary compensation device capable of detecting backflow in a vertical pipe section is installed on the vertical pipe section. It includes a housing connected to the vertical pipe section and a circular groove extending radially along the vertical pipe section. The circular groove penetrates the housing. Two sealing components are arranged opposite each other inside the housing. Both sealing components are hinged to the housing and can be combined to form a complete closed structure when material backflow occurs. The hinge point between the sealing component and the housing is located above the circular groove. The sealing component near the circular groove is also connected to a plug that fits into the port of the circular groove. The other end of the circular groove is connected to a medium backflow warning component.

[0006] In one embodiment, the enclosure assembly includes a movable plate disposed within a housing and a closing plate mounted on the movable plate. A pin is also disposed within the housing, the pin being located at the top of the inner wall of the housing. The movable plate is hinged to the pin, and the closing plate is disposed on the side of the movable plate away from the inner wall of the housing.

[0007] In this embodiment, the movable plate is hinged to the pin, allowing the closing plates of the two closed components to rotate upwards under the action of the reflux medium to form a complete closed component, thus blocking the flow of the medium. When the medium is flowing normally, under the action of gravity and water pressure, the movable plate is close to the inner wall of the outer shell, without affecting the flow of the medium.

[0008] In one embodiment, the movable plate is further provided with a supporting rib plate that contacts the inner wall of the housing on the side near the inner wall of the housing;

[0009] In this embodiment, the movable plate is supported by the provided support ribs, increasing the angle between it and the inner wall of the shell, which facilitates pushing it to rotate upwards when the medium flows back.

[0010] In one embodiment, the plug includes an arc-shaped connecting plate and a head disposed on the connecting plate, the head being conical and fitting into the circular groove, and the connecting plate being connected to the supporting rib.

[0011] In this embodiment, the conical head can easily fit into the circular groove, and the connecting plate also seals the circular groove to prevent the medium from entering the circular groove when it flows from top to bottom in a forward direction.

[0012] In one embodiment, the closing plates of the two closing components have staggered mating portions at their adjacent ends, so that when the material flows back, the adjacent sides of the two closing plates overlap to form a complete closing plate structure.

[0013] In one embodiment, the weight of the closure assembly connected to the plug is greater than that of the other closure assembly, and the mating portion of the closing plate of the closure assembly connected to the plug is located above the other closing plate;

[0014] In this embodiment, the closure component that is not connected to the plug is lighter in weight. When the medium flows back, it first rotates to the top of the housing, and the mating part of the closing plate of the closure component is located above. When the mating part of the closing plate of another closure component mates with it, a complete closure structure is formed. This avoids the situation where the two closure components rotate synchronously under the action of medium flow and interfere with each other.

[0015] In one embodiment, a sealing ring is also provided at the port connection between the housing and the vertical pipe section;

[0016] In this embodiment, the sealing ring can form a sealing surface with the complete closed structure, preventing the medium from flowing out.

[0017] In one embodiment, the medium backflow warning component includes a transparent cover communicating with the circular groove, an elastic element extending in a vertical direction is disposed inside the transparent cover, and a suspended ball is disposed on the top of the elastic element;

[0018] In this embodiment, when the medium flows back into the circular groove, the pressure of the backflow drives the elastic element, which in turn causes the suspended ball to rise. The higher the suspended ball rises, the greater the backflow pressure. The transparent cover allows operators to easily observe the suspended ball.

[0019] In one embodiment, the medium backflow warning component is connected to the circular groove via a three-way valve, and the other end of the three-way valve is also connected to a drain valve;

[0020] In this embodiment, after the backflow fault is resolved, the plug will fit into the circular groove under the normal flow of the medium. The medium inside the transparent cover can then be drained by opening the drain valve to restore the initial state.

[0021] In one embodiment, the elastic element is a spring.

[0022] The beneficial effects of this utility model are as follows:

[0023] A compensation device is provided, which is installed on a vertical pipe section. Two closed components arranged opposite each other inside the device separate and close the circular groove when the medium flows in the forward direction, without affecting the normal flow of the medium. When the medium flows back, the two closed components rotate around the shell to form a complete closed structure, cutting off the medium. At the same time, the medium flows into the medium backflow warning component through the circular groove. The presence of backflow and the magnitude of backflow pressure can be determined visually by using the suspended ball and elastic element in the backflow warning component. This solves the problem of large-flow backflow of medium caused by check valve failure or pump reversal. The device has a simple structure and is durable and stable. Attached Figure Description

[0024] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0025] in:

[0026] Figure 1 A schematic diagram of the structure of this utility model is shown;

[0027] Figure 2 This diagram shows the structure of the present invention during medium reflux.

[0028] Figure 3 A schematic diagram of the plug of this utility model is shown;

[0029] In the accompanying drawings, the same parts use the same reference numerals. The drawings are not to scale.

[0030] Figure label:

[0031] 1-Sealing ring, 2-Pin, 3-Modible plate, 4-Closed plate, 5-First support rib, 6-Shell, 7-Transparent cover, 8-Suspension ball, 9-Spring, 10-Joint, 11-Drain valve, 12-Circular groove, 13-Second support rib, 14-Plug, 401-Matching part, 1401-Connecting plate, 1402-Head. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings.

[0033] This utility model provides a temporary compensation device capable of detecting backflow in a vertical pipe section, such as... Figure 1 As shown, the device is installed on a vertical pipe section and includes a housing 6 connected to the vertical pipe section and a circular groove 12 extending radially along the vertical pipe section. The circular groove 12 penetrates the housing 6. Two sealing components are arranged opposite each other inside the housing 6. Both sealing components are hinged to the housing 6 and can be combined into a complete closed structure when the material flows back. The hinge point between the sealing component and the housing 6 is located above the circular groove 12. The sealing component near the circular groove 12 is also connected to a plug 14 that fits into the port of the circular groove 12. The other end of the circular groove 12 is connected to a medium backflow warning component.

[0034] It should be noted that, as Figure 1 As shown, when the medium flows in the forward direction, the two relatively closed components are separated from each other. One of the closed components is connected to a plug 14 and closes the circular groove 12, which does not affect the normal flow of the medium. However, when the medium flows back, as... Figure 2 As shown, under backflow pressure, the two closed components rotate to the port of the outer shell and form a complete closed structure to cut off the medium. At the same time, the plug 14 opens the circular groove 12 under the drive of the closed components, and the medium flows into the medium backflow warning component through the circular groove 12. The presence of backflow and the magnitude of backflow pressure can be determined by visual inspection using the suspended ball 8 and elastic element in the backflow warning component. This solves the problem of large-flow backflow of medium caused by check valve failure or pump reversal. The device has a simple structure and is durable and stable.

[0035] Specifically, such as Figure 1 and Figure 2 As shown, the sealing assembly includes a movable plate 3 disposed inside the housing 6 and a closing plate 4 mounted on the movable plate 3. A pin 2 is also disposed inside the housing 6, located at the top of the inner wall of the housing 6. The movable plate 3 is hinged to the pin 2. The closing plate 4 is disposed on the side of the movable plate 3 away from the inner wall of the housing 6. That is, by using the hinge between the movable plate 3 and the pin 2, the closing plates 4 of the two sealing assemblies can rotate upward under the action of the backflow medium to form a complete sealing assembly, which intercepts the medium. When the medium is flowing normally, under the action of gravity and water pressure, the movable plate 3 is close to the inner wall of the housing and does not affect the flow of the medium.

[0036] Furthermore, such as Figure 1 As shown, the movable plate 3 is also provided with a support rib plate that contacts the inner wall of the shell 6 on the side close to the inner wall of the shell 6, so as to support the movable plate 3, increase the angle between it and the inner wall of the shell 6, and facilitate pushing it to rotate upward when the medium flows back.

[0037] In one embodiment, such as Figure 1and Figure 3 As shown, the plug 14 includes an arc-shaped connecting plate 1401 and a head 1402 disposed on the connecting plate 1401. The head 1402 has a conical structure and fits into the circular groove 12. The connecting plate 1401 is connected to the supporting rib plate. That is, the head 1402 in the plug 14 is designed as a conical structure to facilitate a tight fit with the circular groove 12. At the same time, the arc-shaped connecting plate 1401 also facilitates the sealing of the circular groove 12 to prevent the medium from entering the circular groove 12 when it flows from top to bottom in a positive direction.

[0038] In one embodiment, such as Figure 1 and Figure 2 As shown, the two closed components have interlocking mating parts 401 at their close ends, so that when the material flows back, the two closed components 4 overlap and combine to form a complete closed component 4 structure. The weight of the closed component connected to the plug 14 is greater than that of the other closed component, and the mating part 401 of the closed component 4 connected to the plug 14 is located above the other closed component 4.

[0039] It should be noted that, as Figure 1 and Figure 2 As shown, the sealing component on the right is connected to the plug 14, meaning that the weight of the sealing component on the right is greater than that of the sealing component on the left. During medium backflow, the sealing component on the left rotates to the top of the housing 6 first, while the sealing component on the right rotates to the top of the housing. The mating part 401 of the closing plate 4 of the right sealing component fits with the mating part 401 of the closing plate 4 of the left sealing component from bottom to top. The two are staggered to form a complete sealing structure. The closing plates 4 of the two sealing components have overlapping mating parts 401. The weight of the two is designed differently to avoid the two closing plates 4 interfering with each other under the action of medium backflow, which would affect the interception effect on the medium.

[0040] In one embodiment, such as Figure 1 and Figure 2 As shown, a sealing ring 1 is also provided at the port connection between the housing 6 and the vertical pipe section. That is, the sealing ring 1 can further form a sealing surface at the port of the housing 6 with the complete closed structure to prevent the medium from flowing out.

[0041] In one embodiment, the media backflow warning component includes a transparent cover 7 communicating with the circular groove 12. An elastic element extending vertically is disposed within the transparent cover 7, and a suspended ball 8 is disposed at the top of the elastic element. Figure 2As shown, when the medium flows back, the plug 14 separates from the circular groove 12. When the medium enters the circular groove 12, the backflow pressure drives the elastic element, causing the suspended ball 8 to rise. The higher the suspended ball 8 rises, the greater the backflow pressure. This allows operators to easily determine whether backflow has occurred in the vertical pipe section and the magnitude of the backflow pressure by observing the height of the suspended ball 8. Figure 1 As shown, when the medium is in the normal flow direction, the plug 14 fits into the circular groove 12, sealing the circular groove 12. At the same time, the supporting rib plate and the connecting plate 1401 of the plug 14 seal the circular groove 12, preventing the medium from entering the circular groove 12, that is, the suspended ball 8 is in the initial state.

[0042] Furthermore, the medium backflow warning component is connected to the circular groove 12 via a three-way valve. The other end of the three-way valve is also connected to the drain valve 11. That is, after the backflow fault is dealt with, under the normal flow of the medium, the plug 14 will fit with the circular groove 12, and the medium in the transparent cover 7 can be drained by opening the drain valve 11 to restore the initial state.

[0043] Specifically, such as Figure 1 and Figure 2 As shown, the elastic element is spring 9, but it can also be other elastic structures;

[0044] In one embodiment, the closed plate 4 is provided with multiple elastic elements. In a vertical pipe section, the normal flow direction of the medium may be from bottom to top, and in a horizontal pipe section, the flow direction of the medium is horizontal. The initial position of the closed plate 4 can be adjusted as needed by multiple elastic elements. When the medium flows back, the backflow pressure acts on the elastic elements, so that the closed plate 4 is assembled into a complete closed structure to intercept the medium.

[0045] In the description of this utility model, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc., 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 utility model 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 utility model.

[0046] While specific embodiments of the present invention have been described herein with reference to them, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that different dependent claims and features described herein can be combined in ways different from those described in the original claims. It is also understood that features described in conjunction with individual embodiments can be used in other described embodiments.

Claims

1. A temporary compensation device capable of detecting backflow in a vertical pipe section, installed on the vertical pipe section, characterized in that, The device includes a housing connected to a vertical pipe section and a circular groove extending radially along the vertical pipe section, the circular groove penetrating the housing. Two sealing components are disposed opposite each other inside the housing, both of which are hinged to the housing and can be combined to form a complete closed structure when material flows back. The hinge point between the sealing component and the housing is located above the circular groove. The sealing component near the circular groove is also connected to a plug that fits into the port of the circular groove. The other end of the circular groove is connected to a medium backflow warning component.

2. A temporary compensation device for determining backflow in a vertical pipe section according to claim 1, characterized in that, The enclosure assembly includes a movable plate disposed within a housing and a closing plate mounted on the movable plate. A pin is also disposed within the housing, the pin being located at the top of the inner wall of the housing. The movable plate is hinged to the pin, and the closing plate is disposed on the side of the movable plate away from the inner wall of the housing.

3. A temporary compensation device for determining backflow in a vertical pipe section according to claim 2, characterized in that, The movable plate is also provided with a supporting rib plate that contacts the inner wall of the shell on the side closest to the shell.

4. A temporary compensation device for determining backflow in a vertical pipe section according to claim 3, characterized in that, The plug includes an arc-shaped connecting plate and a head disposed on the connecting plate. The head has a conical structure and fits into the circular groove. The connecting plate is connected to the supporting rib plate.

5. A temporary compensation device for determining backflow in a vertical pipe section according to claim 2, characterized in that, The two closed components have staggered mating parts at their close ends so that when the material flows back, the close ends of the two closed components overlap to form a complete closed plate structure.

6. A temporary compensation device for determining backflow in a vertical pipe section according to claim 5, characterized in that, The weight of the closure assembly connected to the plug is greater than that of the other closure assembly, and the mating portion of the closing plate of the closure assembly connected to the plug is located above the other closing plate.

7. A temporary compensation device for determining backflow in a vertical pipe section according to claim 1, characterized in that, A sealing ring is also provided at the port connection between the housing and the vertical pipe section.

8. A temporary compensation device for determining backflow in a vertical pipe section according to claim 1, characterized in that, The medium backflow warning component includes a transparent cover communicating with the circular groove. An elastic element extending vertically is disposed inside the transparent cover, and a suspended ball is disposed on the top of the elastic element.

9. A temporary compensation device for determining backflow in a vertical pipe section according to claim 8, characterized in that, The medium backflow warning component is connected to the circular groove via a three-way valve, and the other end of the three-way valve is also connected to a drain valve.

10. A temporary compensation device for determining backflow in a vertical pipe section according to claim 8, characterized in that, The elastic element is a spring.

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