CN109099297B - Hydrophone mounting base for pipeline noise measurement - Google Patents
Hydrophone mounting base for pipeline noise measurement Download PDFInfo
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- CN109099297B CN109099297B CN201811068736.7A CN201811068736A CN109099297B CN 109099297 B CN109099297 B CN 109099297B CN 201811068736 A CN201811068736 A CN 201811068736A CN 109099297 B CN109099297 B CN 109099297B
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- hydrophone
- sealing
- sealing sleeve
- positioning base
- pipeline
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
- F16M13/02—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
Abstract
The invention provides a hydrophone mounting base for pipeline noise measurement, which comprises a positioning base, a sealing sleeve or a sealing plug, wherein the positioning base is fixedly arranged on a pipeline to be measured, the sealing sleeve or the sealing plug is arranged in the positioning base, a first 0-type sealing ring is arranged between the sealing sleeve or the sealing plug and the positioning base, a smooth through hole for a hydrophone to pass through is radially formed in the center of the sealing sleeve, the hydrophone is arranged in the smooth through hole, and a second O-type sealing ring is arranged above the hydrophone. The hydrophone has the advantages that the size is reasonably changed according to actual requirements to adapt to liquid pipeline systems with different pipe diameters and wall thicknesses, and the hydrophone can be quickly installed and detached. The O-shaped sealing ring without the retaining ring or the O-shaped sealing ring with the retaining ring is adopted instead according to the engineering requirement, so that the hydrophone mounting base has a complete sealing effect when the maximum back pressure is 20MPa or 40MPa, and the structure is simplified through reasonable design of the structure.
Description
Technical Field
The invention relates to a hydrophone mounting base, in particular to a hydrophone mounting base for pipeline noise measurement, and belongs to the technical field of ship vibration reduction and noise reduction.
Background
The sea pipeline system mainly comprises a water pump, a valve, a metal hose, a straight pipe, an elbow and the like. During its operation, the generated water noise radiates outwards with the pipeline, thereby revealing its own position. Therefore, as a prerequisite for noise reduction of the sea pipe system, noise measurement of the water pipe is very important.
A common method for measuring water pipe noise at this stage is in-pipe measurement. The in-pipe measurement mainly uses a hydrophone for measurement, is connected with a pipeline through a hydrophone mounting base, and simultaneously reduces the influence on a measurement result to the greatest extent through a flush mounting mode. Chinese patent document CN205226721U discloses a pipeline hydrophone mounting base, which adopts 'flush mounting' in the pipe and solves the problems of accurate measurement result and sealing property to a certain extent. However, the structure is complex, and the sealing principle adopts compression sealing, so that the water seepage phenomenon exists in the practical application process, and the maximum pressure resistance is not more than 4 MPa. Therefore, the method has a great limitation in practical application.
Disclosure of Invention
The invention aims to provide a hydrophone mounting base for pipeline noise measurement, which is convenient to mount and dismount, ensures that a hydrophone probe is intact, does not influence the measurement result of a hydrophone, has a simple structure and can ensure the complete sealing effect within the backpressure range of 20 MPa.
The purpose of the invention is realized as follows:
the utility model provides a hydrophone mounting base for pipeline noise measurement, includes location base, sealed sleeve or sealed end cap, location base fixed mounting is on waiting to survey the pipeline, and sealed sleeve or sealed end cap are installed in location base, set up first 0 type sealing washer between sealed sleeve or sealed end cap and the location base, radially opening in sealed sleeve center has the smooth through-hole that supplies the hydrophone to pass, the hydrophone install in the smooth through-hole and set up second O type sealing washer last.
The invention also includes such features:
1. the hydrophone also comprises a convex gasket, wherein the convex gasket is arranged between the hydrophone and the sealing sleeve, and the convex part faces the sealing sleeve. (ii) a
2. The sealing sleeve and the sealing plug are connected with the positioning base through threads or screws;
3. rectangular grooves are formed in the outer surfaces of the sealing sleeve and the sealing plug and/or the inner surface of the positioning base, and the first 0-type sealing ring is arranged in the rectangular grooves.
Compared with the prior art, the invention has the beneficial effects that:
the invention can reasonably change the size through actual requirements to adapt to liquid pipeline systems with different pipe diameters and wall thicknesses, thereby realizing the quick installation and disassembly of the hydrophone. The O-shaped sealing ring without the retaining ring or the O-shaped sealing ring with the retaining ring is adopted according to engineering requirements, so that the hydrophone mounting base has a complete sealing effect when the maximum back pressure is 20MPa or 40 MPa. Through the reasonable design to the structure, realize the simplification of structure.
The positioning base is fixed on a pipeline to be tested through welding, is provided with internal threads and is connected with the sealing sleeve, and plays a role in positioning the center of the sealing sleeve; the sealing sleeve is connected with the positioning base, a first O-shaped sealing ring is arranged through the rectangular groove to achieve the sealing effect with the positioning base, and the sealing sleeve and the hydrophone are provided with a second O-shaped sealing ring through the smooth through hole to achieve the sealing effect with the hydrophone; the convex gasket is arranged between the hydrophone probe and the sealing sleeve, and plays a role in taking out the hydrophone after the measurement is finished and not damaging the hydrophone probe; the sealing plug is connected with the positioning base through external threads, and the effect of guaranteeing the sealing performance of the whole pipeline system after the measurement is completed is achieved. The invention can be directly used for the installation and measurement of the liquid pipeline and solves the problems of complex structure, insufficient sealing property, small pressure-resistant range and the like of the traditional hydrophone installation base.
Drawings
FIG. 1 is a cross-sectional view of a pipeline, hydrophone and hydrophone mounting base under test according to the invention;
FIG. 2 is a cross-sectional view of the piping and hydrophone mounting base of the present invention in an untested condition;
FIG. 3 is a top plan view of a hydrophone mounting base under test in accordance with the invention;
FIG. 4 is a schematic diagram of a hydrophone;
fig. 5 is a modification of another aspect of the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The invention is applied to acoustic measurement of a liquid pipeline, and particularly relates to a hydrophone mounting base for pipeline noise measurement. The problems that the structure is complex, the sealing performance is insufficient, the pressure-resistant range is small and the like are solved. The invention has the advantages of convenient assembly and disassembly, simple structure and capability of ensuring the complete sealing effect within the range of 20MPa backpressure, ensures that the hydrophone probe is intact, does not influence the measurement result of the hydrophone.
Example 1
With reference to fig. 1 to 4, the present embodiment discloses a hydrophone mounting base for pipeline noise measurement, which is used for fixing and sealing a hydrophone in a pipeline to be measured, and includes a sealing sleeve 1, a first O-ring 2, a positioning base 3, a convex gasket 4, and a sealing plug 5. The positioning base 3 is fixed on a pipeline to be tested through welding, and the sealing sleeve 1 is connected with the positioning base 3 through threads to play a role in positioning the center of the sealing sleeve 1; the positioning base is provided with an internal thread, the sealing sleeve is provided with an external thread, the internal thread is matched with the external thread, a rectangular groove is formed in the outer surface 1 of the sealing sleeve, the first O-shaped sealing ring 2 is arranged in the rectangular groove, a smooth through hole is formed in the sealing sleeve 1 in the radial direction, the hydrophone can pass through the smooth through hole, the hydrophone is provided with a second 0-shaped sealing ring, the first O-shaped sealing ring 2 is installed in the rectangular groove to be matched with the positioning base 3 to achieve a sealing effect, and the hydrophone achieves a sealing effect from the second O-shaped sealing ring and the smooth through hole; the convex gasket 4 is arranged between the hydrophone probe and the sealing sleeve 1, and plays a role in taking out the hydrophone after the measurement is finished and not damaging the hydrophone probe; the sealing plug 5 is connected with the positioning base 3 through threaded connection, and the effect of guaranteeing the sealing performance of the whole pipeline system after measurement is completed is achieved.
In the present example, the sealing sleeve 1 and the sealing plug 5 are respectively used for testing and non-testing working conditions. The positioning base 3 is welded on a pipeline to be tested in advance. Under the test condition: the hydrophone connector sequentially penetrates through the convex gasket 4 and the sealing sleeve 1 in a mode shown in figure 1 until the hydrophone has a sealing effect with a smooth through hole of the sealing sleeve 1 by virtue of the second O-shaped sealing ring, and continues to penetrate further until the hydrophone, the convex gasket 4 and the sealing sleeve 1 are completely clamped, attention is paid to protecting a hydrophone lead from abrasion in the process, the first O-shaped sealing ring 2 is installed in a rectangular groove of the sealing sleeve 1, at the moment, the sealing sleeve 1, the first O-shaped sealing ring 2, the convex gasket 4 and the hydrophone form a whole, the whole is connected with an internal thread of the positioning base 3 through an external thread of the sealing sleeve 1, in the process, lubrication treatment is carried out at a threaded connection part to avoid violent disassembly and assembly, after the measurement is finished, the pipeline is finished, the sealing sleeve 1 is taken down, and the pressure of the hydrophone is firmly pressed in the sealing sleeve 1 due to the high-pressure action, the hydrophone is unloaded by slightly applying force to the convex gasket 4 through an external tool, and in the process, the force is not applied to the probe of the hydrophone, so that the sensitive acoustic element is prevented from being damaged; under non-test conditions: as shown in fig. 2, the external thread of the sealing plug 5 is connected with the internal thread of the positioning base 3, and in the process, the threaded connection is lubricated to avoid violent disassembly and assembly.
The liquid in the pipeline to be measured leaks to the outside in two ways: firstly, the leakage is outward through an inner through hole of the sealing sleeve 1; secondly, the leakage is outwards caused by the contact surface of the sealing sleeve 1 and the positioning base 3. The invention adopts the sealing mode of the O-shaped sealing ring in two leakage ways, and the sealing mode is verified by experiments to be reliable and effective. An O-shaped sealing ring without a retaining ring or an O-shaped sealing ring with a retaining ring can be adopted according to engineering requirements, so that the hydrophone mounting base has a complete sealing effect when the maximum back pressure is 20MPa or 40 MPa.
Further details of the components of this example are provided:
the sealing sleeve 1 is connected with the inner thread of the positioning base 3 through the outer thread, and plays a role in coaxially positioning the hydrophone and in positioning the hydrophone in height. There is the rectangle recess sealing sleeve 1 upper portion for install first O type sealing washer, with the cooperation of location base 3, play sealed effect, prevent that liquid from revealing through sealing sleeve 1 and location base 3 clearance. The sealing sleeve 1 is internally provided with a smooth through hole for penetrating through a hydrophone lead and matching with the hydrophone with an O-shaped sealing ring, so that the sealing effect is achieved, and liquid is prevented from leaking through the gap between the sealing sleeve 1 and the hydrophone.
O type sealing washer 2 is installed in sealing sleeve 1's rectangle recess, with the cooperation of 3 inner walls of location base, plays sealed effect, prevents that liquid from revealing through sealing sleeve 1 and 3 clearances of location base.
The positioning base 3 is welded on the pipeline to be measured in advance to determine the position through welding, and the coaxiality of the positioning base 3 and the measuring hole of the pipeline to be measured is guaranteed in the welding process. The positioning base 3 is connected with the external thread of the sealing sleeve 1 through the internal thread, and plays a role in positioning the sealing sleeve 1 coaxially and highly. The smooth inner wall of location base 3 through upper portion cooperates with the O type sealing washer in the 1 rectangle recess of sealing sleeve, plays sealed effect, prevents that liquid from revealing through sealing sleeve 1 and location base 3 clearance.
The convex gasket 4 is arranged between the hydrophone and the sealing sleeve 1, wherein the convex part faces the sealing sleeve 1, and the hydrophone is detached after the test is finished, and the hydrophone can be detached by only slightly exerting force between the convex gasket 4 and the sealing sleeve 1 by an external tool at the moment, so that the high-pressure hydrophone is prevented from being fastened in the smooth through hole of the sealing sleeve 1.
The sealing plug 5 is connected with the inner thread of the positioning base 3 through the outer thread and used for non-testing working conditions, and the effect of guaranteeing the sealing performance of the whole pipeline system in a non-testing state is achieved.
Example 2
In the specific embodiment 1, the sealing sleeve 1 is in threaded connection with the positioning base 3, and the purpose is to ensure that the hydrophone probe is flush with the inner wall of the pipeline to be detected by adjusting the screwing-in depth of threads under the condition that processing has errors or the pipeline to be detected is irregular, so that flush installation is realized. If the pipeline is regular and the machining is accurate, as shown in fig. 5, the threaded connection of the sealing sleeve 1 and the positioning base 3 can be omitted, and the sealing sleeve is fixed on the end face by using screws, in which case the O-ring is changed from radial sealing to axial sealing. The structure will be further simplified in this case.
The hydrophone mounting base for pipeline noise measurement comprises a positioning base 3, a sealing sleeve 1 or a sealing plug 5, wherein the positioning base 2 is fixedly mounted on a pipeline to be measured, the sealing sleeve 1 or the sealing plug 5 is mounted in the positioning base 3, a first 0-type sealing ring 2 is arranged between the sealing sleeve 1 or the sealing plug 5 and the positioning base 3, a smooth through hole for a hydrophone to penetrate through is radially formed in the center of the sealing sleeve 1, the hydrophone is mounted in the smooth through hole, and a second O-type sealing ring is arranged above the hydrophone; the hydrophone also comprises a convex gasket 4, wherein the convex gasket 4 is arranged between the hydrophone and the sealing sleeve, and the convex part faces the sealing sleeve; the sealing sleeve 1 and the sealing plug 5 are connected with the positioning base 3 through screws. A rectangular groove is formed in the inner surface of the positioning base 3, and the first 0-type sealing ring 2 is arranged in the rectangular groove.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
In summary, the following steps: the invention discloses a hydrophone mounting base for pipeline noise measurement. The sealing device mainly comprises a sealing sleeve, a first O-shaped sealing ring, a positioning base, a convex gasket and a sealing plug. The positioning base is fixed on the pipeline to be tested through welding and connected with the sealing sleeve; the first O-shaped sealing ring is arranged through the rectangular groove to achieve the sealing effect with the positioning base, and the second O-shaped sealing ring is arranged through the smooth through hole and the hydrophone to achieve the sealing effect with the hydrophone; the convex gasket is arranged between the hydrophone probe and the sealing sleeve, and plays a role in taking out the hydrophone after the measurement is finished and not damaging the hydrophone probe; the sealing plug is connected with the positioning base, and the effect of ensuring the sealing performance of the whole pipeline system after the measurement is finished is achieved. The invention can be directly used for the installation and measurement of the liquid pipeline and solves the problems of complex structure, insufficient sealing property, small pressure-resistant range and the like of the traditional hydrophone installation base. The invention has the advantages of convenient assembly and disassembly, simple structure and capability of ensuring the complete sealing effect within the range of 20MPa backpressure, ensures that the hydrophone probe is intact, does not influence the measurement result of the hydrophone. And further, the requirement of 'flush installation' of the hydrophone is met under the conditions of processing, installation and defects of the pipeline to be detected.
Claims (3)
1. A hydrophone mounting base for pipeline noise measurement is characterized by comprising a positioning base, a sealing sleeve or a sealing plug, wherein the positioning base is fixedly mounted on a pipeline to be measured, the sealing sleeve or the sealing plug is mounted in the positioning base, a first 0-type sealing ring is arranged between the sealing sleeve or the sealing plug and the positioning base, a smooth through hole for a hydrophone to pass through is radially formed in the center of the sealing sleeve, the hydrophone is mounted in the smooth through hole, and a second O-type sealing ring is arranged above the hydrophone;
the sealing sleeve is characterized by further comprising a convex gasket, wherein the convex gasket is arranged between the hydrophone and the end face of the sealing sleeve, and the convex part faces the sealing sleeve, so that a gap is reserved between the convex gasket and the end face of the sealing sleeve.
2. The hydrophone mounting base for pipeline noise measurement as recited in claim 1, wherein the sealing sleeve and the sealing plug are threadably or threadably engaged with the positioning base.
3. The hydrophone mounting base of claim 1 or 2, wherein the outer surfaces of the sealing sleeve and the sealing plug and/or the inner surface of the positioning base are provided with rectangular grooves, and the first type 0 sealing ring is disposed in the rectangular grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811068736.7A CN109099297B (en) | 2018-09-13 | 2018-09-13 | Hydrophone mounting base for pipeline noise measurement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811068736.7A CN109099297B (en) | 2018-09-13 | 2018-09-13 | Hydrophone mounting base for pipeline noise measurement |
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| CN109099297A CN109099297A (en) | 2018-12-28 |
| CN109099297B true CN109099297B (en) | 2021-02-19 |
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| CN201811068736.7A Active CN109099297B (en) | 2018-09-13 | 2018-09-13 | Hydrophone mounting base for pipeline noise measurement |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112373658B (en) * | 2020-10-13 | 2022-01-04 | 汕头大学 | Vibration damper, hydrophone and underwater vehicle |
| CN114576858A (en) * | 2022-01-25 | 2022-06-03 | 青岛理工大学 | Flexible connection composite conical surface structure of through type electric water heater double-container |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2330239A1 (en) * | 1975-10-27 | 1977-05-27 | Inst Francais Du Petrole | ACOUSTIC WAVES TRANSDUCER DEVICE WITH AUTOMATIC COMPENSATION OF STATIC PRESSURE VARIATIONS |
| US5437194A (en) * | 1991-03-18 | 1995-08-01 | Panametrics, Inc. | Ultrasonic transducer system with temporal crosstalk isolation |
| CN200968873Y (en) * | 2006-11-10 | 2007-10-31 | 丹东市通博电器有限公司 | Probe component of guide wave radar level transducer |
| CN102288213A (en) * | 2011-05-17 | 2011-12-21 | 国电南京自动化股份有限公司 | Sensor probe installation device capable of freely adjusting installation position |
| CN102322935B (en) * | 2011-08-22 | 2013-05-08 | 江苏大学 | Flowing noise measuring device |
| CN103470901B (en) * | 2013-09-24 | 2015-07-08 | 中国船舶重工集团公司第七○二研究所 | Hydrophone installation seat |
| CN106370542B (en) * | 2016-10-31 | 2019-03-05 | 华中科技大学 | Sealing and the cooling system of fretting corrosion testing stand are simulated deeply in a kind of full sea |
| CN107449504A (en) * | 2017-09-08 | 2017-12-08 | 中国船舶重工集团公司第七〇九研究所 | A kind of pipeline hydrophone stuffing-box and its application method |
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