CN211693642U - Pipeline safety device - Google Patents
Pipeline safety device Download PDFInfo
- Publication number
- CN211693642U CN211693642U CN202020313313.3U CN202020313313U CN211693642U CN 211693642 U CN211693642 U CN 211693642U CN 202020313313 U CN202020313313 U CN 202020313313U CN 211693642 U CN211693642 U CN 211693642U
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- China
- Prior art keywords
- inner chamber
- casing
- diameter
- slip stopper
- pipeline
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Abstract
The utility model discloses a pipeline safety device belongs to fluid conveying equipment technical field, including casing and slip stopper, be provided with the passageway that runs through the casing body in the casing, supply the fluid circulation, the upper and lower end of casing is provided with connection structure respectively for with the pipe connection, its characterized in that, be provided with the inner chamber of loudspeaker type in the casing, inner chamber cross-sectional area is big-end-up, the slip stopper be the back taper structure, be located the inner chamber, inner chamber upper portion is provided with hollow ring, the diameter of slip stopper up end is greater than hollow ring internal diameter, the diameter of lower terminal surface is greater than the diameter of inner chamber lower extreme. The utility model discloses a slip stopper can be along with flow variation freely removes in the inner chamber always, is difficult for the card stopper, simple structure, manufacturing simple to operate simultaneously. Simultaneously the utility model discloses have two-way cutting function, no matter be located the preceding or the pipeline at the back of this device bursts, the homoenergetic plays and cuts off the fluid effect.
Description
Technical Field
The utility model relates to a fluid conveying equipment technical field, especially a pipeline safety device.
Background
Pressure pipelines are common equipment for fluid transportation at present, such as natural gas pipelines and petroleum pipelines, are responsible for transferring materials between equipment in a device and between devices, are very commonly used, and are frequently used in severe explosion accidents caused by pipeline leakage in an industrial production process. In order to reduce the damage of leakage accidents and to cut off the material timely after the leakage happens, the chinese patent application CN201820879360.7 discloses a pipeline protection device, which is vertically installed, the housing is a tubular structure, and a sliding plug is arranged in the housing, when the leakage happens, the fluid circulates by using the gap between the sliding plug and the housing, when the pipeline bursts, the fluid flow is rapidly increased, the sliding plug moves upwards to close the flow channel by the pressure difference at the two ends of the sliding plug, but the device keeps the annular gap between the sliding plug and the housing for normal operation, and avoids influencing the fluid flow, so an upper support and a lower support are arranged, which on one hand makes the structure complex, the manufacture and the installation difficult, on the other hand, the sliding plug is movably connected with the support frame by a guide post, and the pipeline can not be normally used when the pipeline bursts due to corrosion, impurity deposition and the like, in addition, the shut-off knowledge is directed to the constituent fluid flowing in the forward direction after the subsequent line is broken, and the fluid cannot be prevented from flowing in the reverse direction when the device inlet line is burst, so that the shut-off function is limited.
SUMMERY OF THE UTILITY MODEL
For solving the not enough of prior art condition, the utility model discloses an example provides a pipeline safety device, this device simple structure, and practical convenient and fault rate are low, have the pipeline and burst the effect of in time cutting off the material after, and can accomplish two-way cutting off:
the utility model provides a pipeline safety device, includes casing and slip stopper, is provided with the passageway that runs through the casing body in the casing, supplies the fluid circulation, and the upper and lower end of casing is provided with connection structure respectively for with the pipeline connection, be provided with the inner chamber of loudspeaker type in the casing, the big-end-up of inner chamber cross-sectional area, the slip stopper be the back taper structure, be located the inner chamber, inner chamber upper portion is provided with hollow ring, the diameter of slip stopper up end is greater than hollow ring internal diameter, the diameter of terminal surface is greater than the diameter of inner chamber lower extreme down. The sliding plug of the device is similar to a rotor of a rotor flowmeter, the position of the sliding plug in the inner cavity is related to the flow, the position of the sliding plug is higher when the flow is larger, and in normal operation, fluid enters from the lower part of the inner cavityThe water flows out through an annular gap between the inner cavity and the sliding plug and the hollow ring; when the flow is suddenly increased after the subsequent pipeline bursts, the sliding plug moves upwards to block the middle through hole of the hollow ring, and the fluid is cut off from flowing upwards; when at the position ofBook (I)Device for measuring the position of a moving objectUpstream ofWhen the pipeline bursts, the sliding plug moves downwards to block the opening at the lower end of the inner cavity, and the reverse backflow of the fluid is cut off.
Preferably, the upper end face of the sliding plug is provided with a rubber pad, so that the sliding plug is better in sealing effect when moving upwards to contact with the hollow ring.
Preferably, the side face of the periphery of the sliding plug is provided with an annular sealing groove, and a sealing ring is arranged in the sealing groove, so that the sealing effect is better when the sliding plug moves down to contact with the inner cavity wall.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the sliding plug can move freely in the inner cavity along with the change of flow, is not easy to block, and has simple structure and convenient manufacture and installation.
(2) The bidirectional cutting device has a bidirectional cutting function, and can cut off fluid when a pipeline is burst in front of or behind the device.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
in the figure, 1, a housing; 2. a sliding plug; 3. an inner cavity; 4. a hollow ring; 5. a rubber pad; 6. sealing the groove.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the present invention.
Example (b):
a pipeline safety protection device comprises a shell 1 and a sliding plug 2, wherein a channel penetrating through a shell body is arranged in the shell 1 and is used for fluid circulation, and the upper end and the lower end of the shell 1 are internally provided with a channel penetrating through the shell bodyWall(s)Be provided with the screw thread respectively, be used for with the pipeline connection, be provided with the inner chamber 3 of horn type in the casing 1, big-end-up in 3 cross-sectional areas of inner chamber, sliding plug 2 is the back taper structure, be located inner chamber 3, inner chamber upper portion is provided with hollow ring 4, the diameter of 2 up end of sliding plug is greater than hollow ring 4 internal diameters, the diameter of terminal surface is greater than the diameter of 3 lower extremes of inner chamber down, can plug up hollow ring 4's well through-hole when making 2 rebound of sliding plug, cut off the fluid upflow, can plug up the lower part opening of inner chamber 3 when 2 rebound of sliding plug, cut off the fluid countercurrent flow, prevent the backward.
In order to further enhance the sealing effect when cutting off the fluid, the upper end surface of the sliding plug 2 is provided with a rubber pad 5, the peripheral side surface of the sliding plug 2 is provided with an annular sealing groove 6, and a sealing ring is arranged in the sealing groove 6.
In order to facilitate installation, threads are arranged on the circumferential side face of the outer side of the hollow ring 4, the hollow ring 4 is in threaded connection with the inner wall of the shell, and during assembly, the sliding plug 2 is placed into the inner cavity and then screwed into the hollow ring.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the embodiments of the present invention are all covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. The utility model provides a pipeline safety device, includes casing and slip stopper, is provided with the passageway that runs through the casing body in the casing, supplies the fluid circulation, and the upper and lower end of casing is provided with connection structure respectively for with the pipeline connection, a serial communication port, be provided with the inner chamber of loudspeaker type in the casing, the inner chamber cross-sectional area is big-end-up, and the slip stopper is the back taper structure, is arranged in the inner chamber, and inner chamber upper portion is provided with hollow ring, and the diameter of slip stopper up end is greater than the diameter of hollow ring internal diameter, lower terminal surface and is greater than the diameter of inner chamber lower extreme.
2. The pipeline safety device of claim 1, wherein the sliding plug is provided with a rubber pad on an upper end surface.
3. The pipe safety protection device according to claim 1, wherein an annular sealing groove is formed on the peripheral side surface of the sliding plug, and a sealing ring is arranged in the sealing groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020313313.3U CN211693642U (en) | 2020-03-13 | 2020-03-13 | Pipeline safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020313313.3U CN211693642U (en) | 2020-03-13 | 2020-03-13 | Pipeline safety device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211693642U true CN211693642U (en) | 2020-10-16 |
Family
ID=72780751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020313313.3U Expired - Fee Related CN211693642U (en) | 2020-03-13 | 2020-03-13 | Pipeline safety device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211693642U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112908499A (en) * | 2021-01-21 | 2021-06-04 | 中广核工程有限公司 | Reactor core emergency water injection system and anti-backflow device thereof |
-
2020
- 2020-03-13 CN CN202020313313.3U patent/CN211693642U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112908499A (en) * | 2021-01-21 | 2021-06-04 | 中广核工程有限公司 | Reactor core emergency water injection system and anti-backflow device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201016 Termination date: 20210313 |