CN212840760U - Resident gas pipeline sealing detection device - Google Patents
Resident gas pipeline sealing detection device Download PDFInfo
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- CN212840760U CN212840760U CN202021447406.1U CN202021447406U CN212840760U CN 212840760 U CN212840760 U CN 212840760U CN 202021447406 U CN202021447406 U CN 202021447406U CN 212840760 U CN212840760 U CN 212840760U
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Abstract
The utility model relates to a sealing detection device for resident gas pipelines, which comprises an upper enclosing part, a lower enclosing part, a vacuum pump and a pressure detection unit; the upper enclosing part and the lower enclosing part are buckled and connected at the connecting part of the pipeline, and the connecting parts of the upper enclosing part, the lower enclosing part and the pipeline are enclosed to form an annular sealing chamber; the pressure detection unit is connected with the annular sealing chamber; a connecting pipe is arranged on the outer side surface of the lower enclosing part, one end of the connecting pipe is communicated with the annular sealing cavity, and the other end of the connecting pipe is connected with a vacuum pump; a control valve is arranged on the connecting pipe; the upper enclosing part and the lower enclosing part are butted, buckled and fixed at the joint of the pipelines, the control valve is opened, the vacuum pump is started, and the annular sealing cavity is vacuumized; and when the vacuum degree reaches a required value, closing the control valve, maintaining the pressure for a period of time, observing the change of the vacuum degree value, and judging whether the pipeline tightness meets the requirement or not by observing the descending value, thereby detecting the tightness of the butt joint of the two pipelines on the premise of not pressurizing the pipeline.
Description
Technical Field
The utility model belongs to the airtight detection device field of pipeline, concretely relates to resident gas pipeline seals detection device.
Background
The fuel gas is an important mineral resource and is an important raw material and energy source of modern industry. As a clean energy source, gas has been introduced into thousands of households, and is closely related to the life and industrial production of people. The fuel gas is mainly conveyed by pipelines, and because the conveying distance is long, a plurality of pipelines are butted to form a conveying pipeline. The pipeline need carry out the leakproofness and detect, avoids using the pipeline transportation in-process to appear leaking gas, causes the waste of resource. The commonly used detection mode of the sealing performance at present is to plug the two ends of the pipeline, inject gas with certain pressure, maintain the pressure for a period of time, observe whether the reduction value of the pressure belongs to a reasonable range, and judge whether the air tightness of the pipeline meets the requirements. This detection method cannot accurately determine the missing point and further discharge is required. The leakage point of the pipeline mainly exists at the butt joint of the two pipelines, and the tightness of the butt joint can directly determine the tightness of the pipeline.
SUMMERY OF THE UTILITY MODEL
The utility model provides a sealing detection device for resident gas pipelines, which is used for detecting the sealing performance of the butt joint of two pipelines; in order to achieve the above object, the utility model discloses a technical scheme specifically as follows:
a resident gas pipeline sealing detection device comprises an upper enclosing part, a lower enclosing part, a vacuum pump and a pressure detection unit; the upper enclosing part and the lower enclosing part are buckled and connected at the connecting part of the pipeline, and the connecting parts of the upper enclosing part, the lower enclosing part and the pipeline are enclosed to form an annular sealing chamber; the pressure detection unit is connected with the annular sealing cavity and is used for detecting the vacuum degree in the annular sealing cavity; a connecting pipe is arranged on the outer side surface of the lower enclosing part, one end of the connecting pipe is communicated with the annular sealing cavity, and the other end of the connecting pipe is connected with a vacuum pump; and the connecting pipe is provided with a control valve for controlling the connection and disconnection of the connecting pipe.
The utility model discloses a resident gas pipeline seals detection device's beneficial effect: the upper enclosing part and the lower enclosing part are butted, buckled and fixed at the joint of the pipeline, the circumferential side walls of the joint of the upper enclosing part, the lower enclosing part and the pipeline are enclosed to form an annular sealing chamber, a control valve is opened, a vacuum pump is started, and the annular sealing chamber is vacuumized; when the vacuum degree reaches the required value, the control valve is closed, the reduction value of the vacuum degree value is observed after the pressure is maintained for a period of time, if the reduction value is within a reasonable range, the sealing performance of the joint is in accordance with the requirement, and when the reduction value exceeds the reasonable range, the sealing performance of the joint is not in accordance with the requirement, so that the sealing performance of the butt joint of the two pipelines is detected on the premise that the pipelines are not required to be pressurized.
Further, the cross sections of the upper enclosing part and the lower enclosing part are in a shape like a Chinese character 'ji'; the connecting ear plates are respectively arranged on two sides of the arc-shaped plate; the connecting lug plates are respectively provided with bolt holes, and the upper enclosing part and the lower enclosing part are locked by bolts inserted in the bolt holes.
Has the advantages that: the cross section that closes the portion and enclose down to close the portion will go up and present "nearly" font, go up to enclose to close and close the portion and enclose down and close the portion between through alternate in the bolt hole bolt locking, make on enclose to close the portion and enclose down and close the portion centre gripping in the connection of pipeline, be favorable to connecting stably.
Further, the number of the bolt holes arranged on the same connecting lug plate is 2 groups, and the bolt holes are arranged at intervals along the length direction of the connecting lug plate.
Has the advantages that: through setting up 2 bolt holes of group to interval arrangement is favorable to going up to enclose to close portion and enclose down and close portion lock and connect stably, firmly, is favorable to the improvement of annular seal chamber leakproofness.
Furthermore, sealing strips are respectively arranged on the circumferential direction of the opposite surfaces of the upper enclosing part and the lower enclosing part; on the horizontal plane, the sealing strips arranged on the upper enclosing part and the lower enclosing part are arranged in a staggered mode.
Has the advantages that: the sealing strip is used for filling and sealing a gap between the upper enclosing part and the lower enclosing part when buckling is carried out, so that the sealing property of the annular sealing cavity is improved; the sealing strips on the upper enclosing part and the lower enclosing part are arranged in a staggered mode, and the sealing strips form two barriers for the gap between the upper enclosing part and the lower enclosing part, so that the sealing performance of the annular sealing cavity is further improved.
Furthermore, the opposite surfaces of the upper enclosing part and the lower enclosing part are respectively provided with a circumferential clamping groove, one side of the sealing strip is clamped in the clamping groove, and the other side of the sealing strip protrudes out of the surface of the upper enclosing part or the lower enclosing part.
Has the advantages that: through enclosing the portion of closing and offering the circumference draw-in groove on the opposite face of closing the portion under and at last, with one side joint of sealing strip in the draw-in groove, when preventing to enclose the portion of closing and enclose the portion lock connection down, the sealing strip dislocation reduces the leakproofness of annular seal cavity.
Further, the pressure detection unit comprises a vacuum sensor, a timer, a processor and a display; the vacuum sensor is arranged on the inner surface of the upper enclosing part, and the vacuum sensor, the timer and the display are respectively in electric signal connection with the processor.
Has the advantages that: the pressure detection unit is arranged as a vacuum sensor, a timer, a processor and a display; when the vacuum degree in the annular sealing cavity reaches a certain preset value, the vacuum sensor generates a signal and transmits the signal to the processor, the processor analyzes and processes the signal and sends a timely instruction to the timer, and the timer starts timing and displays the data through the display.
Furthermore, the control valve arranged on the connecting pipe is an electromagnetic valve, and the electromagnetic valve is in electric signal connection with the processor.
Has the advantages that: the control valve is set to be an electromagnetic valve, when the vacuum degree in the annular sealing cavity reaches a preset value, the processor sends a closing instruction to the electromagnetic valve, the electromagnetic valve is closed in time, excessive vacuumizing is prevented, the measuring effect is reduced, and the measured value is distorted.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of the sealing detection device for residential gas pipelines of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;
FIG. 4 is a cross-sectional view taken at B-B of FIG. 2;
fig. 5 is a schematic diagram of an embodiment of the sealing detection device for residential gas pipelines of the present invention.
Reference numbers in the figures: 1-upper enclosing part, 2-lower enclosing part, 3-vacuum pump, 4-annular sealing chamber, 5-connecting pipe, 6-arc plate, 7-connecting lug plate, 8-bolt, 9-sealing strip, 10-electromagnetic valve, 11-vacuum sensor, 12-timer, 13-processor, 14-display and 15-pipeline.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments:
the utility model discloses a resident's gas pipeline seals detection device's embodiment concrete structure is as shown in figure 1, figure 2, figure 3 and figure 4, including enclosing on and closing portion 1, enclosing down and closing portion 2, vacuum pump 3 and pressure detecting element, on enclose and close portion 1 and enclose down and close 2 locks of portion and connect in the junction of pipeline 15, enclose on and close portion 1, enclose down and close portion 2 and pipeline 15's junction and enclose and close and form annular seal chamber 4. A connecting pipe 5 is arranged on the outer side surface of the lower enclosing part 2, one end of the connecting pipe 5 is communicated with the annular sealing chamber 4, and the other end of the connecting pipe 5 is connected with the vacuum pump 3; the connecting pipe 5 is provided with a control valve for controlling the connection and disconnection of the connecting pipe 5.
In the embodiment, the cross sections of the upper enclosing part 1 and the lower enclosing part 2 respectively present a shape like a Chinese character ji, and specifically include an arc-shaped plate 6 and connecting ear plates 7 respectively arranged at two sides of the arc-shaped plate 6, one end of the connecting ear plate 7 is fixedly connected with one end of the arc-shaped plate 6, and the other end extends horizontally outwards; the connecting ear plates 7 are respectively provided with bolt holes, and the upper enclosing part 1 and the lower enclosing part 2 are locked by bolts 8 inserted in the bolt holes; the bolt 8 is locked to enable the upper enclosing part 1 and the lower enclosing part 2 to be clamped on the pipeline 15, and connection stability is facilitated. The number of the bolt holes arranged on the same connecting lug plate 7 is 2 groups, and the bolt holes are arranged at intervals along the length direction of the connecting lug plate 7; through setting up 2 bolt holes of group to interval arrangement is favorable to going up to enclose and closes portion 1 and enclose 2 locks of portion down and connect stably, firmly, is favorable to the improvement of 4 leakproofness of annular seal chamber. In other embodiments, on the premise that the sealing performance of the annular sealing chamber meets the requirement, 1 or more groups of bolt holes can be adopted, and when multiple groups of bolt holes are adopted, the bolt holes are uniformly arranged at intervals along the length direction of the connecting lug plate.
In the embodiment, the circumferential directions of the opposite surfaces of the upper enclosing part 1 and the lower enclosing part 2 are respectively provided with a sealing strip 9; on the horizontal plane, the sealing strips 9 respectively arranged on the upper enclosing part 1 and the lower enclosing part 2 are arranged in a staggered way; the sealing strip 9 is used for filling and sealing a gap between the upper enclosing part 1 and the lower enclosing part 2 during buckling, and improves the sealing property of the annular sealing chamber 4; the sealing strips 9 on the upper enclosing part 1 and the lower enclosing part 2 are arranged in a staggered mode, and the sealing strips 9 form two barriers for a gap between the upper enclosing part 1 and the lower enclosing part 2, so that the sealing performance of the annular sealing chamber 4 is further improved. The sealing strip 9 is respectively connected with the upper enclosing part 1 and the lower enclosing part 2 by respectively arranging circumferential clamping grooves on opposite surfaces, one side of the sealing strip 9 is clamped in the clamping grooves, the other side of the sealing strip 9 protrudes out of the surface of the upper enclosing part 1 or the lower enclosing part 2, circumferential slots for inserting the protruding side of the sealing strip 9 are respectively arranged on the upper enclosing part 1 or the lower enclosing part 2, and the positions of the circumferential slots are matched with the positions of the circumferential clamping grooves; when the upper enclosing part 1 and the lower enclosing part 2 are buckled and connected, the sealing strips 9 are staggered, and the sealing performance of the annular sealing cavity 4 is reduced. In other embodiments, the connection between the sealing strip and the upper and lower enclosing portions may be by adhesive bonding, i.e. the sealing strip is directly adhered to the opposite faces of the upper and lower enclosing portions, respectively.
The pressure detection unit is connected with the annular sealing chamber 4 and is used for detecting the vacuum degree in the annular sealing chamber 4; as shown in fig. 5, in the present embodiment, the pressure detection unit specifically includes a vacuum sensor 11, a timer 12, a processor 13, and a display 14; the vacuum sensor 11 is arranged on the inner surface of the enclosing part 1, the timer 12, the processor 13 and the display are respectively arranged on the outer side surface of the enclosing part 1, and the vacuum sensor 11, the timer 12 and the display 14 are respectively connected with the processor 13 through wires to realize electric signal connection; the pressure detection unit is provided as a vacuum sensor 11, a timer 12, a processor 13 and a display 14; when the vacuum degree in the annular sealing chamber 4 reaches a certain preset value, the vacuum sensor 11 generates a signal and transmits the signal to the processor 13, the processor 13 sends a timely instruction to the timer 12 after analyzing and processing, the timer 12 starts timing, and data are displayed through the display 14. In the present embodiment, the vacuum sensor 11 is a vacuum pressure sensor that is commonly used to detect a degree of vacuum, such as an SMC vacuum pressure sensor; the timer 12 is a common LED timer 12, the processor 13 is a common 51-chip microcomputer, and the display 14 is a small display panel. The control valve arranged on the connecting pipe 5 is an electromagnetic valve 10, and the electromagnetic valve 10 is connected with the processor 13 through an electric wire to realize electric signal connection; when the vacuum degree in the annular sealing chamber 4 reaches a preset value, the processor 13 sends a closing instruction to the electromagnetic valve 10, and the electromagnetic valve 10 is closed in time, so that excessive vacuum pumping is prevented, the measurement effect is reduced, and the measured value is distorted. In other embodiments, the pressure detection unit may be a vacuum degree detection gauge; the vacuum degree detection meter is communicated with the annular sealing cavity and is used for detecting the vacuum degree in the annular sealing cavity.
The use process comprises the following steps: the upper enclosing part 1 and the lower enclosing part 2 are butted, buckled and fixed at the joint of the pipeline 15, the circumferential side walls of the joints of the upper enclosing part 1, the lower enclosing part 2 and the pipeline 15 enclose to form an annular sealing chamber 4, a control valve is opened, a vacuum pump 3 is started, and the annular sealing chamber 4 is vacuumized; when the vacuum degree in the annular sealing chamber 4 reaches a certain preset value, the vacuum sensor 11 generates a signal and transmits the signal to the processor 13, the processor 13 sends a closing instruction to the electromagnetic valve 10 after analyzing and processing, the electromagnetic valve 10 is closed, a timely instruction is sent to the timer 12, the timer 12 starts timing, and data are displayed through the display 14; the descending numerical value of vacuum degree value is observed after the pressure is maintained for a period of time, if the descending numerical value is in a reasonable range, the sealing performance of the joint meets the requirement, and when the descending numerical value exceeds the reasonable range, the sealing performance of the joint does not meet the requirement, so that the sealing performance of the 15 butt joint of the two pipelines is detected on the premise that the pipeline is not required to be pressurized.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (7)
1. The sealing detection device for the resident gas pipeline is characterized by comprising an upper enclosing part, a lower enclosing part, a vacuum pump and a pressure detection unit; the upper enclosing part and the lower enclosing part are buckled and connected at the connecting part of the pipeline, and the connecting parts of the upper enclosing part, the lower enclosing part and the pipeline are enclosed to form an annular sealing chamber; the pressure detection unit is connected with the annular sealing cavity and is used for detecting the vacuum degree in the annular sealing cavity; a connecting pipe is arranged on the outer side surface of the lower enclosing part, one end of the connecting pipe is communicated with the annular sealing cavity, and the other end of the connecting pipe is connected with a vacuum pump; and the connecting pipe is provided with a control valve for controlling the connection and disconnection of the connecting pipe.
2. The resident gas pipeline sealing detection device according to claim 1, wherein the cross-section of the upper and lower enclosing portions is in a shape of a Chinese character 'ji'; the connecting ear plates are respectively arranged on two sides of the arc-shaped plate; the connecting lug plates are respectively provided with bolt holes, and the upper enclosing part and the lower enclosing part are locked by bolts inserted in the bolt holes.
3. The resident gas pipeline seal detection device according to claim 2, wherein the number of bolt holes provided in the same connection lug plate is 2 groups, and the bolt holes are arranged at intervals in a length direction of the connection lug plate.
4. The resident gas pipeline sealing detection device according to claim 2, wherein sealing strips are respectively provided on the opposite surfaces of the upper and lower enclosing portions in the circumferential direction; on the horizontal plane, the sealing strips arranged on the upper enclosing part and the lower enclosing part are arranged in a staggered mode.
5. The resident gas pipeline sealing detection device according to claim 4, wherein a circumferential groove is formed on each of the opposing surfaces of the upper enclosing portion and the lower enclosing portion, one side of the sealing strip is engaged with the groove, and the other side of the sealing strip protrudes from the surface of the upper enclosing portion or the lower enclosing portion.
6. The residential gas pipeline sealing detection apparatus as claimed in claim 1, wherein said pressure detection unit comprises a vacuum sensor, a timer, a processor and a display; the vacuum sensor is arranged on the inner surface of the upper enclosing part, and the vacuum sensor, the timer and the display are respectively in electric signal connection with the processor.
7. The residential gas pipeline sealing detection device as claimed in claim 6, wherein the control valve provided on the connection pipe is an electromagnetic valve, and the electromagnetic valve is electrically connected with the processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021447406.1U CN212840760U (en) | 2020-07-21 | 2020-07-21 | Resident gas pipeline sealing detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021447406.1U CN212840760U (en) | 2020-07-21 | 2020-07-21 | Resident gas pipeline sealing detection device |
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| CN212840760U true CN212840760U (en) | 2021-03-30 |
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| CN202021447406.1U Active CN212840760U (en) | 2020-07-21 | 2020-07-21 | Resident gas pipeline sealing detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113069904A (en) * | 2021-04-13 | 2021-07-06 | 山东国泰科技有限公司 | Chemical reagent leaks thing capture adsorption equipment |
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2020
- 2020-07-21 CN CN202021447406.1U patent/CN212840760U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113069904A (en) * | 2021-04-13 | 2021-07-06 | 山东国泰科技有限公司 | Chemical reagent leaks thing capture adsorption equipment |
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