CN107044874B - Split non-pressure-bearing ultrasonic flowmeter probe mount pad - Google Patents
Split non-pressure-bearing ultrasonic flowmeter probe mount pad Download PDFInfo
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- CN107044874B CN107044874B CN201710183976.0A CN201710183976A CN107044874B CN 107044874 B CN107044874 B CN 107044874B CN 201710183976 A CN201710183976 A CN 201710183976A CN 107044874 B CN107044874 B CN 107044874B
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- 239000000523 sample Substances 0.000 title claims abstract description 99
- 238000007789 sealing Methods 0.000 claims abstract description 164
- 239000003822 epoxy resin Substances 0.000 claims description 13
- 230000000670 limiting effect Effects 0.000 claims description 13
- 229920000647 polyepoxide Polymers 0.000 claims description 13
- 238000004382 potting Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 9
- 230000002411 adverse Effects 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 229920002379 silicone rubber Polymers 0.000 description 21
- 239000007789 gas Substances 0.000 description 16
- 239000004945 silicone rubber Substances 0.000 description 16
- 230000006835 compression Effects 0.000 description 9
- 238000007906 compression Methods 0.000 description 9
- 230000002035 prolonged effect Effects 0.000 description 5
- 230000000149 penetrating effect Effects 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/662—Constructional details
Abstract
The invention belongs to the field of gas ultrasonic flow meters, and particularly relates to a split non-pressure-bearing ultrasonic flow meter probe mounting seat, wherein a sealing wire holding structure is connected with a fixed structure through a threaded structure section, an ultrasonic flow meter probe is arranged in the fixed structure, a cable penetrates through the sealing wire holding structure and the fixed structure, a first cavity structure is formed in a joint of the sealing wire holding structure and the fixed structure, the sealing wire holding structure is connected with a meter body (meter body) through the threaded structure section, a second cavity structure is formed between the outer surface of the sealing wire holding structure and the inner surface of the meter body (meter body), and the lower part of the sealing wire holding structure is communicated with the first cavity structure and the second cavity structure through air holes. The invention has the beneficial effects that: the sealing wire holding structure solves the problem of high-pressure sealing, does not need to bear pressure of the probe, avoids adverse effects of the high pressure on signal measurement, simultaneously avoids mechanical damage of the high pressure on the probe, widens the application field of the ultrasonic probe, and relieves the application limit of the ultrasonic probe.
Description
Technical Field
The invention belongs to the field of gas ultrasonic flow meters, and particularly relates to a split non-pressure-bearing ultrasonic flow meter probe mounting seat.
Background
When the ultrasonic flowmeter propagates in the fluid by utilizing the ultrasonic signal, the fluid modulates the ultrasonic signal, and the flow velocity information of the fluid is obtained by detecting the modulated ultrasonic signal, so that the flow is detected. The structure has the characteristics of non-contact type, no-flow component and the like, so the device has the advantages of high measurement precision, no pressure loss, no leakage, dirt resistance, pressure resistance, abrasion resistance and the like, and is very suitable for industrial sites such as natural gas high-pressure long-distance pipeline, urban gas metering management, large industrial gas metering management, other energy-saving and emission-reducing gas emission metering and the like. Up to now, 12 countries including the united kingdom, the netherlands, the united states, and the like, have approved multichannel gas ultrasonic flow meters as legal metering tools for trade settlement, and ultrasonic gas flow meters have become a third type of high-precision gas flow meters. Therefore, the method has great significance for the research of the ultrasonic flowmeter.
The ultrasonic gas flowmeter adopts a packaged piezoelectric ceramic ultrasonic sensor as an ultrasonic probe, and realizes conversion from a non-electric signal to an electric signal by applying ultrasonic vibration to a bimorph vibrator (consisting of two piezoelectric ceramics or one piezoelectric ceramic and one golden sheet) to generate an electric signal. However, since the ultrasonic flowmeter is automatically developed later in China, theoretical research is insufficient. Under the high-pressure measuring environment, adverse effects on aspects such as probe mechanical mechanism, signal conduction and processing influence the measuring precision and stability of the gas ultrasonic flowmeter.
Disclosure of Invention
In order to solve the problem that the ultrasonic probe cannot be used in a high-pressure working environment, the invention utilizes the working principle of the non-bearing structure of the probe, eliminates the use limit of the ultrasonic probe in the high-pressure environment, and provides the split non-bearing ultrasonic flowmeter probe mounting seat.
The technical scheme of the invention is as follows: the utility model provides a components of a whole that can function independently non-pressure-bearing ultrasonic flowmeter probe mount pad, includes cable, ultrasonic flowmeter probe, sealed line structure, fixed knot structure and the table body of embracing, its characterized in that the cable is connected ultrasonic flowmeter probe, sealed line structure of embracing pass through the screw thread structure section with fixed knot constructs the connection, ultrasonic flowmeter probe sets up in the fixed knot constructs, the cable runs through sealed line structure of embracing with fixed knot constructs, sealed line structure of embracing with form first cavity structure in the fixed knot constructs junction, sealed line structure of embracing pass through the screw thread structure section with the table body is connected, sealed line structure of embracing's surface with form the second cavity structure between the internal surface of table body, sealed line structure lower part of embracing with set up the air vent, the air vent intercommunication first cavity structure with the second cavity structure.
Preferably, the sealing wire holding structure adopts a combined structure, the sealing wire holding structure comprises a pressing piece, a sealing piece and a sealing shell, the sealing piece is arranged in the sealing shell, the pressing piece is pressed on the sealing piece and is connected with the sealing shell through a threaded structure section, the lower part of the sealing shell is provided with the vent hole, and the sealing shell and the inner wall of the fixing structure are both in a stepped structure;
the ultrasonic flowmeter probe is fixedly connected with the fixed structure through a potting epoxy resin potting layer
Preferably, the outer wall of the sealing shell is sequentially provided with a hexagonal structure, a limiting protrusion, a threaded structure section and a smooth section, the upper part of the inner wall of the meter body is provided with the threaded structure section, and the threaded structure section arranged on the outer wall of the sealing shell is matched with the threaded structure section arranged on the upper part of the inner wall of the meter body;
the outer wall of the pressing piece is provided with a thread structure section, and the thread structure section arranged in the middle of the inner wall of the sealing shell is matched with the thread structure section of the outer wall of the pressing piece;
the fixed knot structure is characterized in that the outer wall of the fixed knot structure is sequentially provided with a thread structure section and a smooth section, and the thread structure section at the lower part of the inner wall of the sealing shell is matched with the thread structure section arranged on the outer wall of the fixed knot structure.
Preferably, the thread structure section adopts a thread explosion-proof joint surface, the engagement number of the thread explosion-proof joint surface is more than or equal to 7 buckles, and the engagement length of the thread explosion-proof joint surface is more than or equal to 13mm.
Preferably, a sealing ring is further arranged between the sealing wire holding structure and the meter body
The invention has the beneficial effects that
1. The novel structural design is adopted, the structure is simple, safe and reliable, and the cost is effectively reduced;
2. the sealing wire holding structure is used for solving the problem of high-pressure sealing, the probe is not used for bearing pressure, the adverse effect of the high pressure bearing on the probe on signal measurement is avoided, and the mechanical damage of the high pressure on the probe is avoided;
3. the gas ultrasonic flowmeter has the advantages that the measuring precision and stability of the gas ultrasonic flowmeter are improved, the application field of the ultrasonic probe is widened, and the application limit of the ultrasonic probe is relieved.
Drawings
Fig. 1 is a schematic view of the mounting structure of the present invention.
Fig. 2 is a partial enlarged view of fig. 1.
Fig. 3 is a schematic structural view of the present invention.
Fig. 4 is a top view of fig. 3.
In the figure, a cable 1, an ultrasonic flowmeter probe 2, a sealing wire holding structure 3, a fixing structure 4, a surface body 5, a first cavity structure 6, a hexagonal structure 7, a second cavity structure 8, a vent hole 9, a compacting piece 10, a sealing ring 11, a sealing shell 12, a threaded structure section 13, an epoxy resin sealing layer 14 and a limiting bulge 15.
Detailed Description
A specific embodiment of the present invention will be described below with reference to the accompanying drawings.
The invention relates to a split non-pressure-bearing type ultrasonic flowmeter probe mounting seat, which comprises a cable, an ultrasonic flowmeter probe, a sealing holding wire structure, a fixing structure and a meter body, wherein the cable is connected with the ultrasonic flowmeter probe, the sealing holding wire structure is connected with the fixing structure through a threaded structure section, the ultrasonic flowmeter probe is arranged in the fixing structure, the cable penetrates through the sealing holding wire structure and the fixing structure, the sealing holding wire structure can bear high pressure and enables sealing limit to meet the requirements of explosion-proof type electrical equipment, a first cavity structure is formed in the connecting part of the sealing holding wire structure and the fixing structure, the sealing holding wire structure is connected with the meter body through the threaded structure section, a second cavity structure is formed between the outer surface of the sealing holding wire structure and the inner surface of the meter body, the lower part of the sealing holding wire structure is communicated with a vent hole, a measured medium is communicated with the second cavity structure and is further communicated with the first cavity structure, the pressure of the first and medium is equal, an internal and external equal stress structure is formed on the ultrasonic flowmeter probe, and an unpressurized structure which can be communicated with the medium is formed after the ultrasonic flowmeter probe, and mechanical damage and electrical damage caused by unilateral pressure-bearing are avoided.
The sealing wire holding structure adopts a combined structure, and comprises a pressing piece, a sealing piece and a sealing shell, wherein the sealing piece is arranged in the sealing shell, the pressing piece is pressed on the sealing piece and is connected with the sealing shell through a threaded structure section, the sealing piece adopts a silicone rubber sealing gasket, the silicone rubber sealing gasket is further extruded through the engagement of the pressing piece and the threaded structure section of the sealing shell, and the silicone rubber sealing gasket is deformed and expanded to hold a cable penetrating through the silicone rubber sealing gasket, so that the pressure-bearing sealing effect is achieved, and the limiting effect is achieved. The lower part of the sealing shell is provided with a vent hole, and the sealing shell and the inner wall of the fixed structure are both in a ladder structure;
the ultrasonic flowmeter probe is fixedly connected with the fixed structure through the encapsulating epoxy resin encapsulating layer, the probe is fixed by the epoxy resin encapsulating layer, and meanwhile the encapsulating length of the probe is prolonged.
The outer wall of the sealing shell is sequentially provided with a hexagonal structure, a limiting bulge, a thread structure section and a smooth section, the hexagonal structure arranged on the outer wall of the sealing shell is convenient for using a tool to assemble the sealing wire holding structure and the meter body, the limiting bulge limits the relative position of the sealing shell and the meter body, the thread structure section arranged on the outer wall of the sealing shell is matched with the thread structure section arranged on the upper part of the inner wall of the meter body, and the fixing and the installation are convenient, so that the technical scheme meets the explosion-proof requirement;
the outer wall of the compression piece is provided with a thread structure section, the thread structure section arranged in the middle of the inner wall of the sealing shell is matched with the thread structure section of the outer wall of the compression piece, and the compression piece is convenient to fix and install, so that the technical scheme meets the explosion-proof requirement;
the fixed knot constructs the outer wall and sets gradually screw thread structure section and smooth section, and the screw thread structure section of sealed shells inner wall lower part and the screw thread structure section phase-match that fixed knot constructs the outer wall setting, and fixed mounting is convenient, makes this technical scheme reach the flame proof requirement.
The thread structure section adopts a thread explosion-proof joint surface, the engagement number of the thread explosion-proof joint surface is more than or equal to 7 buckles, and the engagement length of the thread explosion-proof joint surface is more than or equal to 13mm, so that the technical scheme meets the explosion-proof requirement.
A sealing ring is further arranged between the sealing wire holding structure and the meter body, so that the sealing performance is further improved
Example 1
The utility model provides a components of a whole that can function independently non-pressure-bearing ultrasonic flowmeter probe mount pad, including cable, ultrasonic flowmeter probe, sealed wire holding structure, fixed knot construct and the table body, the ultrasonic flowmeter probe is connected to the cable, sealed wire holding structure passes through the screw thread structure section and is connected with fixed knot construct, the ultrasonic flowmeter probe sets up in fixed knot constructs, the cable runs through sealed wire holding structure and fixed knot construct, sealed wire holding structure can bear high pressure, and make sealed spacing reach the requirement of flameproof electrical equipment, form first cavity structure in sealed wire holding structure and the fixed knot construct junction, sealed wire holding structure passes through screw thread structure section and is connected with the table body, form the second cavity structure between the surface of sealed wire holding structure and the interior surface of table body, sealed wire holding structure lower part and setting up the air vent, air vent intercommunication first cavity structure and second cavity structure, the medium and the second cavity structure intercommunication of being surveyed and then with first cavity structure intercommunication, make first and medium pressure equal, form the equal stress structure inside and outside to the ultrasonic flowmeter probe, form the unpressurized structure that can communicate with the medium after the ultrasonic flowmeter probe, make the probe avoid unilateral to cause mechanical damage and pressure-bearing damage.
Example 2
The utility model provides a components of a whole that can function independently non-pressure-bearing ultrasonic flowmeter probe mount pad, including cable, ultrasonic flowmeter probe, sealed wire holding structure, fixed knot construct and the table body, the ultrasonic flowmeter probe is connected to the cable, sealed wire holding structure passes through the screw thread structure section and is connected with fixed knot construct, the ultrasonic flowmeter probe sets up in fixed knot constructs, the cable runs through sealed wire holding structure and fixed knot construct, sealed wire holding structure can bear high pressure, and make sealed spacing reach the requirement of flameproof electrical equipment, form first cavity structure in sealed wire holding structure and the fixed knot construct junction, sealed wire holding structure passes through screw thread structure section and is connected with the table body, form the second cavity structure between the surface of sealed wire holding structure and the interior surface of table body, sealed wire holding structure lower part and setting up the air vent, air vent intercommunication first cavity structure and second cavity structure, the medium and the second cavity structure intercommunication of being surveyed and then with first cavity structure intercommunication, make first and medium pressure equal, form the equal stress structure inside and outside to the ultrasonic flowmeter probe, form the unpressurized structure that can communicate with the medium after the ultrasonic flowmeter probe, make the probe avoid unilateral to cause mechanical damage and pressure-bearing damage.
A sealing ring is further arranged between the sealing wire holding structure and the meter body, so that the sealing performance is further improved
Example 3
The utility model provides a components of a whole that can function independently non-pressure-bearing ultrasonic flowmeter probe mount pad, including cable, ultrasonic flowmeter probe, sealed wire holding structure, fixed knot construct and the table body, the ultrasonic flowmeter probe is connected to the cable, sealed wire holding structure passes through the screw thread structure section and is connected with fixed knot construct, the ultrasonic flowmeter probe sets up in fixed knot constructs, the cable runs through sealed wire holding structure and fixed knot construct, sealed wire holding structure can bear high pressure, and make sealed spacing reach the requirement of flameproof electrical equipment, form first cavity structure in sealed wire holding structure and the fixed knot construct junction, sealed wire holding structure passes through screw thread structure section and is connected with the table body, form the second cavity structure between the surface of sealed wire holding structure and the interior surface of table body, sealed wire holding structure lower part and setting up the air vent, air vent intercommunication first cavity structure and second cavity structure, the medium and the second cavity structure intercommunication of being surveyed and then with first cavity structure intercommunication, make first and medium pressure equal, form the equal stress structure inside and outside to the ultrasonic flowmeter probe, form the unpressurized structure that can communicate with the medium after the ultrasonic flowmeter probe, make the probe avoid unilateral to cause mechanical damage and pressure-bearing damage.
The sealing wire holding structure adopts a combined structure, and comprises a pressing piece, a sealing piece and a sealing shell, wherein the sealing piece is arranged in the sealing shell, the pressing piece is pressed on the sealing piece and is connected with the sealing shell through a threaded structure section, the sealing piece adopts a silicone rubber sealing gasket, the silicone rubber sealing gasket is further extruded through the engagement of the pressing piece and the threaded structure section of the sealing shell, and the silicone rubber sealing gasket is deformed and expanded to hold a cable penetrating through the silicone rubber sealing gasket, so that the pressure-bearing sealing effect is achieved, and the limiting effect is achieved. The lower part of the sealing shell is provided with a vent hole, and the sealing shell and the inner wall of the fixed structure are both in a ladder structure;
the ultrasonic flowmeter probe is fixedly connected with the fixed structure through the encapsulating epoxy resin encapsulating layer, the probe is fixed by the epoxy resin encapsulating layer, and meanwhile the encapsulating length of the probe is prolonged.
Example 4
The utility model provides a components of a whole that can function independently non-pressure-bearing ultrasonic flowmeter probe mount pad, including the cable, ultrasonic flowmeter probe, sealed wire holding structure, fixed knot constructs and the table body, the ultrasonic flowmeter probe is connected to the cable, sealed wire holding structure passes through the screw thread structure section and is connected with fixed knot constructs, the ultrasonic flowmeter probe sets up in fixed knot constructs, the cable runs through sealed wire holding structure and fixed knot constructs, sealed wire holding structure can bear high pressure, and make sealed spacing reach flameproof electrical equipment requirement, form first cavity structure in sealed wire holding structure and the fixed knot construct junction, sealed wire holding structure passes through screw thread structure section and is connected with the table body, form the second cavity structure between the surface of sealed wire holding structure and the internal surface of table body, sealed wire holding structure lower part and setting up the air vent, air vent intercommunication first cavity structure and second cavity structure, the medium that is surveyed communicates with second cavity structure and then with first cavity structure intercommunication, make first and medium pressure equal, form the atress structure inside and outside to the ultrasonic flowmeter probe, form the unpressurized structure that can communicate with the medium after the ultrasonic flowmeter probe, make the probe avoid unilateral to cause mechanical damage and electrical damage.
The sealing wire holding structure adopts a combined structure, and comprises a pressing piece, a sealing piece and a sealing shell, wherein the sealing piece is arranged in the sealing shell, the pressing piece is pressed on the sealing piece and is connected with the sealing shell through a threaded structure section, the sealing piece adopts a silicone rubber sealing gasket, the silicone rubber sealing gasket is further extruded through the engagement of the pressing piece and the threaded structure section of the sealing shell, and the silicone rubber sealing gasket is deformed and expanded to hold a cable penetrating through the silicone rubber sealing gasket, so that the pressure-bearing sealing effect is achieved, and the limiting effect is achieved. The lower part of the sealing shell is provided with a vent hole, and the sealing shell and the inner wall of the fixed structure are both in a ladder structure;
the ultrasonic flowmeter probe is fixedly connected with the fixed structure through the encapsulating epoxy resin encapsulating layer, the probe is fixed by the epoxy resin encapsulating layer, and meanwhile the encapsulating length of the probe is prolonged.
The outer wall of the sealing shell is sequentially provided with a hexagonal structure, a limiting protrusion, a threaded structure section and a smooth section, the hexagonal structure arranged on the outer wall of the sealing shell is convenient for using a tool to assemble the sealing wire holding structure and the meter body, the threaded structure section is arranged on the upper part of the inner wall of the meter body, the threaded structure section arranged on the outer wall of the sealing shell is matched with the threaded structure section arranged on the upper part of the inner wall of the meter body, and the sealing shell is convenient to fix and install, so that the technical scheme meets the explosion-proof requirement;
the outer wall of the compression piece is provided with a thread structure section, the thread structure section arranged in the middle of the inner wall of the sealing shell is matched with the thread structure section of the outer wall of the compression piece, and the compression piece is convenient to fix and install, so that the technical scheme meets the explosion-proof requirement;
the fixed knot constructs the outer wall and sets gradually screw thread structure section and smooth section, and the screw thread structure section of sealed shells inner wall lower part and the screw thread structure section phase-match that fixed knot constructs the outer wall setting, and fixed mounting is convenient, makes this technical scheme reach the flame proof requirement.
Example 5
The utility model provides a components of a whole that can function independently non-pressure-bearing ultrasonic flowmeter probe mount pad, including cable, ultrasonic flowmeter probe, sealed wire holding structure, fixed knot construct and the table body, the ultrasonic flowmeter probe is connected to the cable, sealed wire holding structure passes through the screw thread structure section and is connected with fixed knot construct, the ultrasonic flowmeter probe sets up in fixed knot constructs, the cable runs through sealed wire holding structure and fixed knot construct, sealed wire holding structure can bear high pressure, and make sealed spacing reach the requirement of flameproof electrical equipment, form first cavity structure in sealed wire holding structure and the fixed knot construct junction, sealed wire holding structure passes through screw thread structure section and is connected with the table body, form the second cavity structure between the surface of sealed wire holding structure and the interior surface of table body, sealed wire holding structure lower part and setting up the air vent, air vent intercommunication first cavity structure and second cavity structure, the medium and the second cavity structure intercommunication of being surveyed and then with first cavity structure intercommunication, make first and medium pressure equal, form the equal stress structure inside and outside to the ultrasonic flowmeter probe, form the unpressurized structure that can communicate with the medium after the ultrasonic flowmeter probe, make the probe avoid unilateral to cause mechanical damage and pressure-bearing damage.
The sealing wire holding structure adopts a combined structure, and comprises a pressing piece, a sealing piece and a sealing shell, wherein the sealing piece is arranged in the sealing shell, the pressing piece is pressed on the sealing piece and is connected with the sealing shell through a threaded structure section, the sealing piece adopts a silicone rubber sealing gasket, the silicone rubber sealing gasket is further extruded through the engagement of the pressing piece and the threaded structure section of the sealing shell, and the silicone rubber sealing gasket is deformed and expanded to hold a cable penetrating through the silicone rubber sealing gasket, so that the pressure-bearing sealing effect is achieved, and the limiting effect is achieved. The lower part of the sealing shell is provided with a vent hole, and the sealing shell and the inner wall of the fixed structure are both in a ladder structure;
the ultrasonic flowmeter probe is fixedly connected with the fixed structure through the encapsulating epoxy resin encapsulating layer, the probe is fixed by the epoxy resin encapsulating layer, and meanwhile the encapsulating length of the probe is prolonged.
The outer wall of the sealing shell is sequentially provided with a hexagonal structure, a limiting protrusion, a threaded structure section and a smooth section, the hexagonal structure arranged on the outer wall of the sealing shell is convenient for using a tool to assemble the sealing wire holding structure and the meter body, the threaded structure section is arranged on the upper part of the inner wall of the meter body, the threaded structure section arranged on the outer wall of the sealing shell is matched with the threaded structure section arranged on the upper part of the inner wall of the meter body, and the sealing shell is convenient to fix and install, so that the technical scheme meets the explosion-proof requirement;
the outer wall of the compression piece is provided with a thread structure section, the thread structure section arranged in the middle of the inner wall of the sealing shell is matched with the thread structure section of the outer wall of the compression piece, and the compression piece is convenient to fix and install, so that the technical scheme meets the explosion-proof requirement;
the fixed knot constructs the outer wall and sets gradually screw thread structure section and smooth section, and the screw thread structure section of sealed shells inner wall lower part and the screw thread structure section phase-match that fixed knot constructs the outer wall setting, and fixed mounting is convenient, makes this technical scheme reach the flame proof requirement.
The thread structure section adopts a thread explosion-proof joint surface, the engagement number of the thread explosion-proof joint surface is more than or equal to 7 buckles, and the engagement length of the thread explosion-proof joint surface is more than or equal to 13mm, so that the technical scheme meets the explosion-proof requirement.
A sealing ring is further arranged between the sealing wire holding structure and the meter body, so that the sealing performance is further improved
The working process comprises the following steps: after the gas ultrasonic flowmeter probe is mounted on the fixed structure, the back of the gas ultrasonic flowmeter probe is fixed and the glue sealing length is prolonged by an epoxy resin pouring layer formed by epoxy resin pouring and sealing, the pressing piece is pressed on the sealing piece and is connected with the sealing shell through the threaded structure section, the sealing piece adopts a silicon rubber sealing gasket, the silicon rubber sealing gasket is further pressed by the meshing of the pressing piece and the threaded structure section of the sealing shell, the silicon rubber sealing gasket is deformed and expanded so as to tightly hold a cable passing through the silicon rubber sealing gasket, the pressure bearing sealing effect is achieved, the limiting effect is achieved, a first cavity structure is formed in the joint of the sealing wire holding structure and the fixed structure, a second cavity structure is formed between the outer surface of the sealing wire holding structure and the inner surface of the meter body, the lower part of the sealing wire holding structure is communicated with a vent hole, the vent hole is communicated with the first cavity structure and the second cavity structure, a measured medium is communicated with the second cavity structure and is further communicated with the first cavity structure, the pressure of the first medium is equal, the pressure and the pressure of the ultrasonic flowmeter probe is formed into an inner and outer equal stress structure, the ultrasonic flowmeter probe is formed into an unpressurized structure which can be communicated with the medium, the pressure bearing structure is also can be used under high pressure conditions, and the pressure bearing performance of the ultrasonic flowmeter probe is prevented from being damaged.
Through calculation, the thread structure sections of the sealing wire holding structure and the fixing structure adopt thread explosion-proof joint surfaces, the engagement number of the thread explosion-proof joint surfaces is more than or equal to 7 buckles, and the engagement length of the thread explosion-proof joint surfaces is more than or equal to 13mm, so that the silicon rubber wire holding structure can meet the explosion-proof requirement, and the problem of integral high-pressure sealing of the probe of the gas ultrasonic flowmeter is solved.
Compared with the prior art, the technical scheme adopts an innovative structural design, has simple structure, is safe and reliable, and effectively reduces the cost; the sealing wire holding structure is used for solving the problem of high-pressure sealing, the probe is not used for bearing pressure, the adverse effect of the high pressure bearing on the probe on signal measurement is avoided, and the mechanical damage of the high pressure on the probe is avoided; the gas ultrasonic flowmeter has the advantages that the measuring precision and stability of the gas ultrasonic flowmeter are improved, the application field of the ultrasonic probe is widened, and the application limit of the ultrasonic probe is relieved.
The foregoing describes an example of the present invention in detail, but the disclosure is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.
Claims (5)
1. The utility model provides a components of a whole that can function independently non-pressure-bearing ultrasonic flowmeter probe mount pad, includes cable, ultrasonic flowmeter probe, sealed line structure, fixed knot structure and the table body of embracing, its characterized in that the cable is connected ultrasonic flowmeter probe, sealed line structure of embracing pass through the screw thread structure section with fixed knot constructs the connection, ultrasonic flowmeter probe sets up in the fixed knot constructs, the cable runs through sealed line structure of embracing with fixed knot constructs, sealed line structure of embracing with form first cavity structure in the fixed knot constructs junction, sealed line structure of embracing pass through the screw thread structure section with the table body is connected, sealed line structure of embracing's surface with form the second cavity structure between the internal surface of table body, sealed line structure lower part of embracing with set up the air vent, the air vent intercommunication first cavity structure with the second cavity structure.
2. The split non-pressure-bearing ultrasonic flowmeter probe mounting seat according to claim 1, wherein the sealing wire holding structure adopts a combined structure, the sealing wire holding structure comprises a pressing piece, a sealing piece and a sealing shell, the sealing piece is arranged in the sealing shell, the pressing piece is pressed on the sealing piece and is connected with the sealing shell through a threaded structure section, the vent hole is formed in the lower part of the sealing shell, and the sealing shell and the inner wall of the fixed structure adopt a stepped structure;
the ultrasonic flowmeter probe is fixedly connected with the fixed structure through a potting epoxy resin potting layer.
3. The split non-pressure-bearing ultrasonic flowmeter probe mounting seat according to claim 2, wherein the outer wall of the sealing shell is sequentially provided with a hexagonal structure, a limiting protrusion, a thread structure section and a smooth section, the upper part of the inner wall of the meter body is provided with the thread structure section, and the thread structure section arranged on the outer wall of the sealing shell is matched with the thread structure section arranged on the upper part of the inner wall of the meter body;
the outer wall of the pressing piece is provided with a thread structure section, and the thread structure section arranged in the middle of the inner wall of the sealing shell is matched with the thread structure section of the outer wall of the pressing piece;
the fixed knot structure is characterized in that the outer wall of the fixed knot structure is sequentially provided with a thread structure section and a smooth section, and the thread structure section at the lower part of the inner wall of the sealing shell is matched with the thread structure section arranged on the outer wall of the fixed knot structure.
4. The split non-pressurized ultrasonic flow meter probe mount according to claim 1 or 2 or 3, wherein: the thread structure section adopts a thread explosion-proof joint surface, the engagement number of the thread explosion-proof joint surface is more than or equal to 7 buckles, and the engagement length of the thread explosion-proof joint surface is more than or equal to 13mm.
5. The split non-pressure-bearing ultrasonic flowmeter probe mounting seat according to claim 1 or 3, wherein a sealing ring is further arranged between the sealing wire holding structure and the meter body.
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| CN201710183976.0A CN107044874B (en) | 2017-03-24 | 2017-03-24 | Split non-pressure-bearing ultrasonic flowmeter probe mount pad |
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| CN201710183976.0A CN107044874B (en) | 2017-03-24 | 2017-03-24 | Split non-pressure-bearing ultrasonic flowmeter probe mount pad |
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| CN107044874A CN107044874A (en) | 2017-08-15 |
| CN107044874B true CN107044874B (en) | 2023-10-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107356299A (en) * | 2017-09-07 | 2017-11-17 | 上海诺仪表有限公司 | A kind of ultrasonic flowmeter |
| CN107356300A (en) * | 2017-09-07 | 2017-11-17 | 上海诺仪表有限公司 | A kind of ultrasonic flowmeter |
| CN109029599A (en) * | 2018-08-07 | 2018-12-18 | 北京慧怡科技有限责任公司 | A kind of ultrasonic water meter |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000180227A (en) * | 1998-12-18 | 2000-06-30 | Osaka Gas Co Ltd | Ultrasonic vortex flowmeter |
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| CN207472339U (en) * | 2017-03-24 | 2018-06-08 | 天津市迅尔仪表科技有限公司 | Split non-pressurized probe of ultrasonic flowmeter mounting base |
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2017
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| JP2000180227A (en) * | 1998-12-18 | 2000-06-30 | Osaka Gas Co Ltd | Ultrasonic vortex flowmeter |
| CN201522303U (en) * | 2009-10-30 | 2010-07-07 | 威海市天罡仪表有限公司 | Ultrasonic flow meter |
| WO2012118669A1 (en) * | 2011-03-02 | 2012-09-07 | Cameron International Corporation | Pressure balanced ultrasonic flowmeter |
| CN202994337U (en) * | 2012-12-25 | 2013-06-12 | 山东思达特测控设备有限公司 | Ferrule-type ultrasonic flowmeter |
| CN104181236A (en) * | 2014-08-22 | 2014-12-03 | 南通友联数码技术开发有限公司 | Underwater high-pressure ultrasonic probe |
| CN207472339U (en) * | 2017-03-24 | 2018-06-08 | 天津市迅尔仪表科技有限公司 | Split non-pressurized probe of ultrasonic flowmeter mounting base |
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|---|---|
| CN107044874A (en) | 2017-08-15 |
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