CN110702323A - Liquid pipeline normally closed valve leakproofness monitoring devices - Google Patents
Liquid pipeline normally closed valve leakproofness monitoring devices Download PDFInfo
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- CN110702323A CN110702323A CN201911094803.7A CN201911094803A CN110702323A CN 110702323 A CN110702323 A CN 110702323A CN 201911094803 A CN201911094803 A CN 201911094803A CN 110702323 A CN110702323 A CN 110702323A
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- liquid
- guide groove
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
- G01F23/64—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements
- G01F23/66—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements using mechanically actuated indicating means
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- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Pipeline Systems (AREA)
Abstract
The utility model provides a liquid pipeline normally closed valve leakproofness monitoring devices, belongs to liquid pipeline valve leakage monitoring technical field, include the collector tube that matches with the liquid pipeline, the closed liquid guide groove that has the slope is opened to the collector tube inner wall, the collector tube has the reservoir through feed liquor pipe intercommunication, the bottom in feed liquor pipe intercommunication liquid guide groove, reservoir internally mounted has level sensor. The leakage liquid is completely collected through the closed liquid guide groove, the leakage liquid is conveyed to the liquid storage device through the liquid inlet pipe, the leakage amount is monitored by the liquid level sensor, the leakage liquid is accurately monitored, the structure is simple, the cost is low, the processing is easy, the whole valve caliber can be covered, the leakage liquid is completely collected, the monitoring is accurate, the reliability is high, and the groove type liquid guide groove can not generate any resistance influence on the original liquid discharge pipeline.
Description
Technical Field
The invention belongs to the technical field of leakage monitoring of liquid pipeline valves, and particularly relates to a normally closed valve tightness monitoring device for a liquid pipeline.
Background
The liquid pipeline is a tool necessary for human life and technological development, such as a tap water pipe, an oil pipeline and the like. The valve is an important structure for controlling whether liquid in a pipeline flows or not, and under certain specific conditions, strict requirements are required on the sealing performance of the valve in the liquid pipeline, for example, in a nitrogen-filled fire extinguishing system of a transformer, an oil discharge valve is used for opening to discharge internal high-temperature and high-pressure oil gas when the transformer fails, and the leakage of the liquid discharge valve can cause the liquid level of an insulating medium in the transformer to drop, so that the internal insulating capability is damaged, and even the internal discharge safety failure is caused.
And there are many deficiencies to the monitoring mode of valve leakproofness in the liquid pipeline among the prior art:
1. direct observation method: the valve tightness can be directly observed by naked eyes aiming at certain pipelines which are transparent per se. The disadvantages are as follows: the manual observation is adopted, the reliability is poor, the manual real-time monitoring difficulty is high, the signal remote transmission cannot be realized, and the transparent pipeline is usually low in strength and can only be realized under the condition of low pressure resistance of the pipeline.
2. Observation window method: aiming at the pipeline which is made of non-transparent materials and can not directly observe the valve, an observation window for observation is additionally arranged under the permission of the conditions of volume, environmental space, pipeline pressure resistance and the like, and the tightness of the valve is observed by naked eyes with manpower. The disadvantages are as follows: the position of the observation window needs to be staggered with the position of the valve, and the observation effect is poor only by observing whether liquid seeps on the inner wall of a part of the pipe.
3. Other observations using electronic components or chemical reaction: electronic elements or chemical indicators need to be additionally arranged in the pipeline, so that the reliability is difficult to guarantee; secondly, the overhaul and the maintenance are inconvenient; and thirdly, in some cases, the liquid in the pipeline is not suitable for being added with electronic elements or chemical indicators.
Disclosure of Invention
The invention provides a normally closed valve tightness monitoring device for a liquid pipeline, aiming at solving the problem that the monitoring mode of the valve tightness in the liquid pipeline in the prior art is not enough.
The invention is realized by the following technical scheme.
The utility model provides a liquid pipeline normally closed valve leakproofness monitoring devices, includes the collector tube that matches with the liquid pipeline, the closed liquid guide groove that has the slope is opened to the collector tube inner wall, the collector tube has the reservoir through feed liquor pipe intercommunication, the bottom in feed liquor pipe intercommunication liquid guide groove, reservoir internally mounted has level sensor. The leakage liquid is completely collected through the closed liquid guide groove, the leakage liquid is conveyed to the liquid storage device through the liquid inlet pipe, the leakage amount is monitored by the liquid level sensor, the leakage liquid is accurately monitored, the structure is simple, the cost is low, the processing is easy, the whole valve caliber can be covered, the leakage liquid is completely collected, the monitoring is accurate, the reliability is high, and the groove type liquid guide groove can not generate any resistance influence on the original liquid discharge pipeline.
The invention is further improved, and the upper part of the liquid reservoir is communicated with the interior of the liquid collecting pipe through an overflow pipe. When liquid is higher in the reservoir, excessive leakage liquid can overflow to the collecting pipe from the overflow pipe, and can not overflow because of excessive injection liquid, avoid resetting repeated flowing back in the reservoir, save the labour.
The invention further improves the structure that the liquid guide groove comprises a liquid guide groove I and a liquid guide groove II which are symmetrically distributed, and the liquid guide groove I and the liquid guide groove II are in a half-circle spiral line shape. The liquid guide groove is arranged in a symmetrical half-turn spiral line shape, so that liquid is completely collected, and the monitoring is accurate.
The invention further improves that the liquid guide groove comprises a liquid guide groove III in a whole-circle spiral line shape, and the upper end and the lower end of the liquid guide groove III are communicated through a liquid guide groove IV. The liquid guide groove is arranged in a full-circle spiral line shape, so that liquid is completely collected, and the monitoring is accurate.
The invention is further improved in that the cross section of the liquid guide groove is rectangular. The upper portion seepage liquid of being convenient for flows into the cistern smoothly in, guarantees the sufficient tension of the inside liquid of cistern, increases the unobstructed nature of flow of seepage liquid, avoids the cistern hydrops and spills over to avoid monitoring the problem of inaccuracy, liquid waste.
In a further improvement of the present invention, the liquid level sensor is a floating ball sensor. The liquid level detection principle is adopted, the sensitivity and the reliability are high, the structure is relatively simple, the maintenance is easy, the passive working mode is adopted, and the safety is high.
The liquid inlet pipe is inclined downwards towards the direction of the liquid storage device, and the overflow pipe is inclined downwards towards the direction of the liquid collection pipe. The leakage liquid can flow into the liquid storage device, the excessive leakage liquid can overflow to the liquid collecting pipe, and the leakage liquid is better in smoothness.
The invention is further improved in that the upper end and the lower end of the liquid collecting pipe are welded with flange plates. Simple structure easily realizes, and the dismouting of being convenient for avoids oil circuit pipeline welded safety risk.
The invention is further improved in that a transparent observation window is arranged on the side surface of the liquid storage device, and a liquid discharge port is arranged on the bottom surface of the liquid storage device. The leakage condition can be observed by human eyes in real time through the observation window, and the liquid in the liquid storage device is emptied and reset through the liquid outlet.
The invention has the beneficial effects that: 1. the structure is simple, the cost is low, the disassembly and the assembly are convenient, and the practicability is good; 2. the liquid collecting pipe can cover the whole valve caliber, the leaked liquid is completely collected through the closed spiral liquid guide groove, and the concave liquid guide groove structure does not generate any resistance influence on the original liquid discharge pipeline; 3. the monitoring on the amount of the leaked liquid is accurate, and the reliability is high; 4. when excessive seepage, excessive seepage liquid can spill over to the collection liquid intraductal from the overflow pipe, can not spill over because of excessive seepage, and the security is good, avoids resetting the repeated flowing back of reservoir, saves the labour.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic side view of example 1 according to the embodiment of the present invention.
FIG. 3 is a schematic cross-sectional view of a fluid reservoir according to an embodiment of the present invention.
Fig. 4 is a schematic view of an installation structure of an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of example 2 according to an embodiment of the present invention.
FIG. 6 is a schematic side view of example 2 according to an embodiment of the present invention.
In the drawings: 1. the liquid collecting device comprises a liquid collecting pipe 2, liquid guide grooves I and 3, liquid guide grooves II and 4, liquid inlet pipes 5, overflow pipes 6, a liquid storage device 7, a flange plate 8, a liquid level sensor 9, a liquid discharge port 10, a sealing valve 11, a main pipeline 12, liquid guide grooves III and 13 and a liquid guide groove IV.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
Example 1
As shown in fig. 1 and fig. 2, a liquid pipeline normally closed valve tightness monitoring device includes the collector tube 1 matched with the liquid pipeline (main pipeline 11), the flange 7 has all been welded to the upper and lower end of collector tube 1, and open at 1 inner wall of collector tube has closed liquid guide groove, liquid guide groove is including the liquid guide groove I2 and the liquid guide groove II 3 that are symmetric distribution, liquid guide groove I2 and liquid guide groove II 3 are the spiral threadiness of half a circle, collector tube 1 has reservoir 6 through feed liquor pipe 4 intercommunication, the bottommost end of feed liquor pipe 4 intercommunication liquid guide groove I2 and liquid guide groove II 3, the liquid reservoir 6 internally mounted has the level sensor 8 of floating ball formula, 6 upper portions of reservoir communicate inside collector tube 1 through overflow pipe 5. The cross sections of the liquid guide groove I2 and the liquid guide groove II 3 are rectangular. The liquid inlet pipe 4 is obliquely downward towards the liquid reservoir 6, and the overflow pipe 5 is obliquely downward towards the liquid collecting pipe 1.
When the device is installed and used, as shown in fig. 4, the device is installed and fixed on a main pipe 11 through a flange 7, and a to-be-tested normally-closed sealing valve 10 is installed on the main pipe 11 on the upper side of the collecting pipe 1. When leakage occurs in the normally closed sealing valve 10, leakage liquid flows downwards along the inner wall of the liquid collecting pipe 1, when the leakage liquid passes through the upper sides of the liquid guide groove I2 and the liquid guide groove II 3, the leakage liquid flows into the liquid guide groove I2 and the liquid guide groove II 3, the leakage liquid spirally flows downwards towards the liquid inlet pipe 4 at the lowest end along two directions of the liquid guide groove I2 and the liquid guide groove II 3, the leakage liquid flows into the liquid storage device 6 through the liquid inlet pipe 4 inclined downwards, the liquid level height of the inflow leakage liquid is monitored through the floating ball type liquid level sensor 8 in the liquid storage device 6, when the preset liquid level is reached, the liquid level sensor 8 transmits signals outwards, and operators are informed through warning devices (a horn, a warning lamp and the like) that the liquid leakage amount is too much, the sealing valve 10 needs to be overhauled so as to avoid faults or accidents. When excessive seepage, liquid spills over from overflow pipe 5 downward collector tube 1 to one side in the reservoir 6, can not spill over because of excessive seepage, and the security is good, avoids the repetition to the reservior 6 flowing back to reset, saves the labour.
Example 2
As shown in fig. 5 and fig. 6, a liquid pipeline normally closed valve leakproofness monitoring devices, include with liquid pipeline (trunk line 11) assorted collector tube 1, the flange dish 7 has all been welded to collector tube 1 upper and lower extreme, and open at collector tube 1 inner wall has closed liquid guide groove, liquid guide groove is including being the liquid guide groove iii 12 of a whole circle spiral threadiness, liquid guide groove iv 13 intercommunication is passed through to liquid guide groove iii 12's upper and lower end, collector tube 1 has reservoir 6 through feed liquor pipe 4 intercommunication, the bottommost end of feed liquor pipe 4 intercommunication liquid guide groove iii 12 and liquid guide groove iv 13, the liquid level sensor 8 of floater formula is installed to 6 internally mounted of reservoir, 6 upper portions of reservoir communicate collector tube 1 inside through overflow pipe 5. The cross section of the liquid guide groove III 12 is rectangular. The liquid inlet pipe 4 is obliquely downward towards the liquid reservoir 6, and the overflow pipe 5 is obliquely downward towards the liquid collecting pipe 1.
When the device is installed and used, as shown in fig. 4, the device is installed and fixed on a main pipe 11 through a flange 7, and a to-be-tested normally-closed sealing valve 10 is installed on the main pipe 11 on the upper side of the collecting pipe 1. When leakage occurs in the normally closed sealing valve 10, leakage liquid flows downwards along the inner wall of the liquid collecting pipe 1, when the leakage liquid passes through the upper side of the liquid guide groove III 12, the leakage liquid flows into the liquid guide groove III 12, the leakage liquid flows downwards along the spiral of the liquid guide groove III 12 to the liquid inlet pipe 4 at the lowest end, the leakage liquid flows into the liquid storage device 6 through the liquid inlet pipe 4 inclined downwards, the liquid level height of the inflow leakage liquid is monitored through the floating ball type liquid level sensor 8 in the liquid storage device 6, when the preset liquid level is reached, the liquid level sensor 8 transmits signals outwards, and an operator is informed through a warning device (a horn, a warning lamp and the like) that the liquid leakage amount is too much, so that the sealing valve 10 needs to be overhauled to avoid faults or accidents. When excessive seepage, liquid spills over from overflow pipe 5 downward collector tube 1 to one side in the reservoir 6, can not spill over because of excessive seepage, and the security is good, avoids the repetition to the reservior 6 flowing back to reset, saves the labour.
The side surface of the liquid storage device 6 is provided with a transparent observation window, and the bottom surface of the liquid storage device 6 is provided with a liquid outlet 9. The leakage condition can be observed by human eyes in real time through the observation window, and the liquid inside the liquid storage device 6 is emptied and reset through the liquid outlet 9.
This liquid pipeline normally closed valve leakproofness monitoring devices, the cross section size of cistern, the pitch and the diameter proportion of cistern can be according to the liquid of difference and leakage quantity detection size isoparametric and do corresponding change to satisfy the leakage liquid and can not overflow in the cistern and flow down, and can guarantee to measure accurate purpose.
This liquid pipeline normally closed valve leakproofness monitoring devices, simple structure, low cost, the dismouting is convenient, and the practicality is good, and it is complete to collect the leakage liquid, adopts the liquid guide groove structure of indent formula, can not produce any resistance influence to former fluid-discharge line, and the reliability is high, and is accurate to leakage liquid volume monitoring, and the security is good, and can avoid resetting the repeated flowing back of reservoir, saves the labour.
This liquid pipeline normal close formula valve leakproofness monitoring devices, can be applied to the monitoring of filling nitrogen fire extinguishing systems oil drain valve leakproofness well, through the seepage condition monitoring to the oil drain valve, can avoid because of filling the bad hidden danger that leads to transformer insulating liquid to run off of nitrogen fire extinguishing systems oil drain valve leakproofness, compare the artifical mode of patrolling of present observation window, can practice thrift very big fortune dimension cost, and can avoid because of filling the bad risk that leads to transformer trouble tripping operation of nitrogen fire extinguishing systems oil drain valve leakproofness, guarantee regional electric wire netting key node reliably supplies power.
The normally closed valve tightness monitoring device for the liquid pipeline can be generally applied to tightness monitoring of sealing valves in all liquid pipelines, and is good in universality.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The terms "upper", "lower", "outside", "inside" and the like in the description and claims of the present invention and the above drawings are used for distinguishing relative positions if any, and are not necessarily given qualitatively. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The utility model provides a liquid pipeline normally closed valve leakproofness monitoring devices, its characterized in that includes collector tube (1) with liquid pipeline matching, the closed liquid guide groove that has the slope is opened to collector tube (1) inner wall, collector tube (1) has reservoir (6) through feed liquor pipe (4) intercommunication, the bottom in feed liquor pipe (4) intercommunication liquid guide groove, reservoir (6) internally mounted has level sensor (8).
2. The device for monitoring the tightness of a normally closed valve of a liquid pipeline according to claim 1, wherein the upper part of the liquid reservoir (6) is communicated with the inside of the liquid collecting pipe (1) through an overflow pipe (5).
3. The device for monitoring the sealing performance of the normally closed valve of the liquid pipeline according to claim 1, wherein the liquid guide groove comprises a liquid guide groove I (2) and a liquid guide groove II (3) which are symmetrically distributed, and the liquid guide groove I (2) and the liquid guide groove II (3) are in a half-turn spiral shape.
4. The device for monitoring the sealing performance of the normally closed valve of the liquid pipeline according to claim 1, wherein the liquid guide groove comprises a liquid guide groove III (12) in a full-circle spiral shape, and the upper end and the lower end of the liquid guide groove III (12) are communicated through a liquid guide groove IV (13).
5. The device for monitoring the sealability of a normally closed valve of a liquid pipeline according to claim 1, wherein the liquid guide groove has a rectangular cross section.
6. The fluid line normally closed valve tightness monitoring device according to claim 1, characterized in that the level sensor (8) is a float ball sensor.
7. The device for monitoring the tightness of a normally closed valve in a liquid line according to claim 2, wherein the liquid inlet pipe (4) is inclined downward toward the liquid reservoir (6), and the overflow pipe (5) is inclined downward toward the liquid collection pipe (1).
8. The device for monitoring the sealing performance of the normally closed valve of the liquid pipeline according to claim 1, wherein the flange plates (7) are welded at the upper end and the lower end of the liquid collecting pipe (1).
9. The device for monitoring the sealing performance of the normally closed valve of the liquid pipeline according to claim 1, wherein a transparent observation window is arranged on the side surface of the liquid reservoir (6), and a liquid outlet (9) is arranged on the bottom surface of the liquid reservoir (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911094803.7A CN110702323A (en) | 2019-11-11 | 2019-11-11 | Liquid pipeline normally closed valve leakproofness monitoring devices |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911094803.7A CN110702323A (en) | 2019-11-11 | 2019-11-11 | Liquid pipeline normally closed valve leakproofness monitoring devices |
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| CN110702323A true CN110702323A (en) | 2020-01-17 |
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| CN201911094803.7A Pending CN110702323A (en) | 2019-11-11 | 2019-11-11 | Liquid pipeline normally closed valve leakproofness monitoring devices |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210155061A (en) * | 2020-06-15 | 2021-12-22 | 주식회사 한성시스코 | Power transmission type leak detection device |
| CN114034449A (en) * | 2021-11-02 | 2022-02-11 | 上海中船三井造船柴油机有限公司 | Device and method for checking tightness of gas inlet valve |
-
2019
- 2019-11-11 CN CN201911094803.7A patent/CN110702323A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210155061A (en) * | 2020-06-15 | 2021-12-22 | 주식회사 한성시스코 | Power transmission type leak detection device |
| KR102382027B1 (en) | 2020-06-15 | 2022-04-01 | 주식회사 한성시스코 | Power transmission type leak detection device |
| CN114034449A (en) * | 2021-11-02 | 2022-02-11 | 上海中船三井造船柴油机有限公司 | Device and method for checking tightness of gas inlet valve |
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