CN220690189U - Basic meter structure of ultrasonic water meter - Google Patents

Abstract

The utility model relates to an ultrasonic water meter base meter structure which comprises a tube section, ultrasonic transducers and a temperature and pressure integrated sensor, wherein mounting flanges are respectively arranged at two ends of the tube section, the ultrasonic transducers are mounted on the side wall of the tube section between the two mounting flanges, and the temperature and pressure integrated sensor is mounted on one of the mounting flanges. The installation flange is provided with a first installation hole communicated with the inside of the pipe section on the circumferential outer wall, one end of the first installation hole far away from the pipe section is in threaded connection with a one-way valve, one end of the one-way valve far away from the first installation hole is in threaded connection with the connecting end of the temperature-pressure integrated sensor, and one end of the temperature-pressure integrated sensor, which is provided with a first connecting wire, is far away from the one-way valve. In the utility model, the installation and sealing structure between the one-way valve and the installation flange is relatively simpler, and meanwhile, the temperature and pressure integrated sensor is adopted, so that the connection installation and sealing structure of the independent sensor in the base meter structure are simplified, the sensor circuits are integrated together, and the external circuit structure of the ultrasonic water meter is also simplified.

Description

Basic meter structure of ultrasonic water meter

Technical Field

The utility model relates to the technical field of flow measuring instruments, in particular to an ultrasonic water meter base meter structure which is more convenient to install and higher in sealing performance.

Background

The ultrasonic water meter is a new type water meter for measuring flow by adopting time difference method, and is usually formed from basic meter structure and meter head, in the basic meter structure, upstream and downstream of measuring channel (pipe section) respectively an ultrasonic transducer is mounted for detecting time difference produced by speed change when the ultrasonic sound beam is co-current counter-current propagated in the water, and in the meter head a flow integrating instrument is mounted for analyzing and processing flow rate of water so as to further calculate flow of water. The temperature detection device and the pressure detection device are integrated on some high-precision ultrasonic water meters and are used for measuring the flow and simultaneously monitoring the temperature and the pressure of water supply in the pipeline.

The installation of temperature detection device and pressure detection device on the pipeline section needs to set up solitary installation interface and seal structure respectively because of the high accuracy ultrasonic water gauge in the present market, causes this ultrasonic water gauge base table's structure to all comparatively complicated, installation complex operation to the problem that the leakproofness is not enough also appears easily in temperature detection device and pressure detection device's mounted position, influences ultrasonic water gauge's measurement accuracy. For example, when the temperature sensor is externally installed on the base meter, not only is the insertion installation carried out by opening holes on the pipe section needed, but also a connection and fixing structure of a sensor circuit is needed to be additionally arranged; when installing pressure sensor, often need supporting installation ball valve on the pipeline section, pressure sensor passes through the ball valve to be fixed in on the pipeline section to with pipeline section inside intercommunication, add the ball valve and not only increased the cost, also greatly increased ultrasonic wave water gauge overall structure's installation degree of difficulty and seal structure's complexity. These locations are all where the ultrasonic meter is prone to sealing problems in practical installation and application. Although some can choose to install the temperature sensor internally, has saved the trouble of independent trompil, independent installation, but built-in temperature sensor installs in the pipeline section inside, and its connecting line shares a wiring passageway with the connecting line of ultrasonic transducer in the water gauge, when temperature sensor has bad the needs maintenance change, must open the gauge outfit upper cover, destroys the lead seal, and the operation is very troublesome.

In addition, the existing ultrasonic water meter has some defects in the installation structure of the ultrasonic transducer, for example, the fixed structure of the transducer in the base meter structure is usually directly pressed by a gland, or the transducer is pressed by a pressing nut, or the transducer is installed on a copper sleeve, and the copper sleeve is assembled on the base meter. In the installation mode of the gland, the pressure born by the gland is larger, and in order to prevent the gland from being damaged, the requirements on the material strength and the processing process are strict, so that the input material cost and the processing cost are larger; in the installation mode of the compression nut, the compression force of the compression nut to the energy transducer is difficult to control, if the compression is not tight, leakage is easy to occur, and if the compression is too tight, the sealing gasket in the installation hole is easy to crush, and the leakage problem is also caused; in the installation mode of adopting the copper bush, the installation hole needs to be enlarged, and the installation structure and the sealing structure of the installation hole can be more complicated. These fixing methods are not ideal in practical applications.

Disclosure of Invention

In order to solve the problems, the utility model provides an ultrasonic water meter base meter structure, which adopts a temperature and pressure integrated sensor and is assembled on a mounting flange at one end of a pipe section through a one-way valve, so that one of the problems in the background art, namely the problems of complex mounting structure and poor sealing performance of the ultrasonic water meter caused by independently arranging the temperature sensor and the pressure sensor on the pipe section, is solved.

The technical scheme adopted by the basic meter structure of the ultrasonic water meter is as follows: the utility model provides an ultrasonic wave water gauge base table structure, includes pipeline section, ultrasonic transducer and warm-pressing integrated sensor, pipeline section both ends are provided with mounting flange respectively, ultrasonic transducer installs in between two mounting flanges on the pipe wall of pipeline section, warm-pressing integrated sensor installs in one of them on the mounting flange.

The installation flange is characterized in that a first installation hole communicated with the inside of the pipe section is formed in the circumferential outer wall of the installation flange, the installation Kong Yiyuan is connected with a one-way valve through threads at one end of the pipe section, one end of the one-way valve away from the first installation hole is connected with the connecting end of the temperature and pressure integrated sensor through threads, and one end of the temperature and pressure integrated sensor, provided with a first connecting wire, is away from the one-way valve.

The check valve comprises a valve seat, a valve rod, a spring and a spring seat. One end of the valve seat is arranged in the first mounting hole in a threaded mode, the other end of the valve seat is located outside the first mounting hole and provided with a threaded hole, and the connecting end of the temperature and pressure integrated sensor is connected in the threaded hole in a threaded mode. The valve seat is connected to one end in the first mounting hole, a step hole is further formed in the end, the small end of the step hole is close to the temperature-pressure integrated sensor and is communicated with the threaded hole, and the aperture of the threaded hole is larger than that of the small end of the step hole. The valve rod is in a stepped cylindrical shape, the small end of the valve rod is slidably connected in the hole of the small end of the stepped hole, the small end of the valve rod is abutted against the connecting end of the temperature and pressure integrated sensor, the diameter of the large end of the valve rod is larger than the diameter of the small end of the stepped hole, and the large end of the valve rod is positioned in the hole of the large end of the stepped hole. The spring seat is in threaded connection with one end of the stepped hole, which is far away from the temperature and pressure integrated sensor, and a through hole is formed in the spring seat along the axial direction of the stepped hole. The spring is arranged in the step hole and is positioned between the large end of the valve rod and the spring seat.

As a further limitation to the technical scheme, an inclined shoulder surface is arranged between the large end and the small end of the valve rod, a chamfer is arranged on the step surface between the large end and the small end of the step hole, and the inclined shoulder surface is matched with the inclined surface of the chamfer.

As a further limitation to the above technical solution, the first mounting hole is also a step-shaped hole, a first sealing gasket is disposed on a step surface of the first mounting hole, and an end portion of the valve seat, on which the step hole is formed, is abutted to the first sealing gasket. And a second sealing gasket is arranged at the bottom of the threaded hole, and the connecting end of the temperature and pressure integrated sensor is abutted against the second sealing gasket.

As a further limitation to the above technical scheme, a limit groove is formed in the end face of the large end of the valve rod, one end of the spring is abutted to the limit groove, a limit boss is arranged on one side, close to the valve rod, of the spring seat, and the other end of the spring is sleeved on the periphery of the limit boss.

As a further limitation to the technical scheme, the outer wall of the pipe section is provided with a transducer mounting base, the transducer mounting base is provided with a second mounting hole communicated with the inside of the pipe section, the second mounting hole is obliquely arranged, one side, close to the center of the pipe section, of the second mounting hole is a stepped hole, and the small end of the stepped hole is located on one side, close to the center of the pipe section.

The ultrasonic transducer is provided with the one end of sound wedge face and is located the shoulder hole tip just towards inside the spool piece, ultrasonic transducer's middle part joint in on the shoulder face of shoulder hole, ultrasonic transducer with be provided with sealing washer three between the shoulder face of shoulder hole, the big end hole's of shoulder hole lateral wall with be provided with O type sealing washer between ultrasonic transducer's the circumference, ultrasonic transducer keeps away from one side butt of spool piece has the circlip for hole, the circlip for hole inlay in on the inner wall of mounting hole two, the circlip for hole keep away from be provided with the encapsulating layer one in the mounting hole two of ultrasonic transducer one side, ultrasonic transducer keeps away from one end of spool piece still is provided with the connecting wire two, the connecting wire two passes the encapsulating layer one.

As a further limitation to the above technical scheme, one end of the installation Kong Eryuan, which is away from the pipe section, is covered with a transducer end cover, one side of the transducer end cover is provided with an elastic clamping strip extending into the second installation hole, one side of the elastic clamping strip, which is close to the second inner wall of the second installation hole, is provided with a clamping block, and the inner wall of the second installation hole is provided with a clamping groove matched with the clamping block; and a connecting wire II of the ultrasonic transducer penetrates through the side wall of the second mounting hole between the transducer end cover and the first encapsulating layer and extends out of the mounting base.

As a further limitation to the technical scheme, two ends of the pipe section are of a reducing structure, the inner diameter of the pipeline at the two ends of the pipe section is larger than that of the pipeline at the middle of the pipe section, and the side wall of the pipeline at the reducing position is in arc transition. The transducer mounting base is arranged on the pipe wall with smaller inner diameter in the pipe section.

As a further limitation to the above technical scheme, 8 transducer mounting bases are provided on the outer wall of the pipe section, each transducer mounting base is provided therein with an ultrasonic transducer, a gauge outfit mounting seat is provided in the middle of the 8 transducer mounting bases, and wiring channels are provided between the 8 transducer mounting bases and the gauge outfit mounting seat and in the outer wall of the pipe section, and the second connecting lines of the ultrasonic transducers are respectively communicated to the gauge outfit mounting seat through corresponding wiring channels and pass out from the top of the gauge outfit mounting seat.

As a further limitation to the above technical scheme, a second filling layer is disposed in each wiring channel and each gauge outfit mounting seat, each second connecting wire penetrates through a second filling layer in the corresponding wiring channel and a second filling layer in the mounting seat, and the second filling layer and the first filling layer are both formed by filling sealant.

By adopting the technology, the utility model has the advantages that: the utility model adopts the temperature and pressure integrated sensor, simplifies the structure that the temperature detection device and the pressure detection device are respectively connected and installed and sealed in the basic meter structure, integrates the output lines of the temperature detection signal and the pressure detection signal, simplifies the external line structure of the ultrasonic water meter, and can directly feed the temperature and pressure detection signal from the outside of the pipe section of the water meter to the flow integrating instrument in the meter head of the water meter for displaying the liquid temperature and the pressure in the pipeline. Through adopting the check valve to realize warm-pressing the installation between integrative sensor and pipeline section, the mounting flange, mounting structure and seal structure between check valve and the mounting flange are also simpler equally, in the use after the installation, the check valve is in normally open state, when need change or dismantle warm-pressing integrative sensor, only need rotatory the screwing out warm-pressing integrative sensor, the check valve rod can realize hard seal with the check valve disk seat under the effect of spring, prevent that liquid from leaking outward. The purpose that the temperature and pressure integrated sensor is replaced and disassembled is achieved, so that the temperature and pressure integrated sensor is rapid and convenient, and liquid is not leaked is achieved.

Drawings

FIG. 1 is a top view of the overall structure of the basic meter structure of the ultrasonic water meter of the present utility model;

FIG. 2 is a cross-sectional view taken along the direction A-A in FIG. 1;

FIG. 3 is a cross-sectional view taken along the direction B-B in FIG. 1;

FIG. 4 is a cross-sectional view taken along the direction C-C in FIG. 2;

FIG. 5 is an enlarged view of a partial structure at D in FIG. 2;

FIG. 6 is an enlarged view of a partial structure at E in FIG. 4;

FIG. 7 is an enlarged view of a partial structure at F in FIG. 5;

FIG. 8 is a schematic view of a valve seat according to the present utility model.

In the figure: 1-pipe section; 101-mounting a flange; 102-a transducer mounting base; 103-mounting holes II; 104-mounting hole I; 105-gauge outfit mount; 2-a temperature and pressure integrated sensor; 201-connecting line one; 3-valve seat; 301-a threaded hole; 302-a step hole; 303-chamfering; 4-a second sealing gasket; 5-a valve rod; 501-inclined shoulder surface; 6-a spring; 7-spring seats; 8-a first sealing gasket; 9-transducer end caps; 10-circlips for holes; 11-O type sealing ring; 12-a third sealing gasket; 13-an ultrasonic transducer; 1301-connecting line two; 14-first encapsulation layer.

Detailed Description

The utility model will be described in further detail with reference to the accompanying drawings and specific examples.

As shown in fig. 1-8, the ultrasonic water meter base meter structure comprises a pipe section 1, an ultrasonic transducer 13 and a temperature and pressure integrated sensor 2, wherein the pipe section 1 is in a straight pipe shape as a whole, mounting flanges 101 are respectively arranged at two ends of the pipe section 1, the ultrasonic transducer 13 is mounted on the pipe wall of the pipe section 1 between the two mounting flanges 101, and the temperature and pressure integrated sensor 2 is mounted on one of the mounting flanges 101.

The circumference outer wall of the mounting flange 101 is provided with a first mounting hole 104 communicated with the inside of the pipe section 1, one end of the first mounting hole 104 far away from the pipe section 1 is in threaded connection with a one-way valve, one end of the one-way valve far away from the first mounting hole 104 is in threaded connection with the connecting end of the temperature and pressure integrated sensor 2, and one end of the temperature and pressure integrated sensor 2, which is provided with a first connecting wire 201, is far away from the one-way valve. The temperature and pressure integrated sensor in this embodiment is an MIK-PD500, and the outside of the connecting wire one 201 of the temperature and pressure integrated sensor 2 is protected by a gold sleeve, and the connecting wire one 201 is connected to a motherboard in the gauge outfit.

The scheme adopts the temperature and pressure integrated sensor, simplifies the structures of connection, installation, sealing and the like of the temperature detection device and the pressure detection device in the base meter structure, integrates the output lines of the temperature detection signal and the pressure detection signal, simplifies the external line structure of the ultrasonic water meter, and can directly feed the temperature and pressure detection signal into a flow integrating instrument in the meter head of the water meter from the outside of the pipe section of the water meter.

The check valve in this embodiment includes a valve seat 3, a valve stem 5, a spring 6, and a spring seat 7.

One end of the valve seat 3 is screwed in the first mounting hole 104, the other end of the valve seat 3 is positioned outside the first mounting hole 104 and provided with a threaded hole 301, and the connecting end of the temperature and pressure integrated sensor 2 is screwed in the threaded hole 301. The valve seat 3 is connected to one end in the first mounting hole 104 and is further provided with a step hole 302, the small end of the step hole 302 is close to the temperature and pressure integrated sensor 2 and is communicated with a threaded hole 301, and the aperture of the threaded hole 301 is larger than that of the small end of the step hole 302. The valve rod 5 is in a stepped cylindrical shape, the small end of the valve rod 5 is slidably connected in the hole of the small end of the stepped hole 302, the small end of the valve rod 5 is abutted against the connecting end of the temperature and pressure integrated sensor 2, the diameter of the large end of the valve rod 5 is larger than the diameter of the small end of the stepped hole 302, and the large end of the valve rod 5 is located in the hole of the large end of the stepped hole 302. The spring seat 7 is in threaded connection with one end, far away from the temperature and pressure integrated sensor 2, in the step hole 302, and a through hole is formed in the spring seat 7 along the axial direction of the step hole 302. The spring 6 is disposed within the stepped bore 302 between the large end of the valve stem 5 and the spring seat 7.

In this embodiment, a gap of 0.25mm or more is provided between the small end of the valve stem 5 and the small end of the stepped hole 302, and the gap between the large end of the valve stem 5 and the large end of the stepped hole 302 is larger than the gap between the small ends.

In the above scheme, in the process of installing the temperature and pressure integrated sensor 2 on the one-way valve, the valve rod 5 is pressed downwards, and the valve rod 5 moves downwards so that the one-way valve is opened. The measured liquid in the pipe section 1 flows through the through hole in the middle of the spring seat 7 from the first mounting hole 104 to reach the inside of the step hole 302, then flows into the bottom of the temperature and pressure integrated sensor 2 from the side wall gap between the valve rod 5 and the step hole 302, directly contacts with the lower end of the temperature and pressure integrated sensor 2, and the temperature and pressure integrated sensor 2 can detect the temperature and pressure data of the measured liquid. Therefore, in the use process of the ultrasonic water meter base structure after installation, the one-way valve is in a normally open state.

In this embodiment, an inclined shoulder surface 501 is disposed between the large end and the small end of the valve rod 5, a chamfer 303 is disposed on the step surface between the large end and the small end of the step hole 302, and the inclined shoulder surface 501 is matched with the inclined surface of the chamfer 303. When the temperature and pressure integrated sensor 2 needs to be replaced or disassembled, the temperature and pressure integrated sensor 2 is only required to be screwed out of the threaded hole 301, and the check valve rod 5 can be hard-sealed with the check valve seat 3 under the action of the spring 6, so that liquid leakage is prevented. The purposes of quick and convenient replacement and disassembly of the temperature and pressure changing integrated sensor 2 and no leakage of liquid are achieved.

The first mounting hole 104 in this embodiment is also a stepped hole, the first sealing gasket 8 is disposed on the stepped surface of the first mounting hole 104, and the end portion of the valve seat 3 with the stepped hole 302 abuts against the first sealing gasket 8. In this embodiment, the bottom of the threaded hole 301 is provided with a second sealing gasket 4, and the connection end of the temperature and pressure integrated sensor 2 abuts against the second sealing gasket 4. The first sealing gasket 8 and the second sealing gasket 4 are arranged to improve the tightness of the connecting structure between the temperature and pressure integrated sensor 2 and the pipe section 1 and prevent the liquid in the pipe section 1 from leaking out.

In this embodiment, the end face of the big end of the valve rod 5 is provided with a limit groove, one end of the spring 6 is abutted in the limit groove, one side of the spring seat 7, which is close to the valve rod 5, is provided with a limit boss, and the other end of the spring 6 is sleeved on the periphery of the limit boss. The limiting boss arranged on the spring seat 7 and the limiting groove arranged on the valve rod 5 all play a role in fixing the spring 6.

In this embodiment, the outer wall of the pipe section 1 is provided with a transducer mounting base 102, and a second mounting hole 103 communicated with the inside of the pipe section 1 is formed in the transducer mounting base 102, and the second mounting hole 103 is obliquely arranged, i.e. an included angle between the axial direction of the second mounting hole 103 and the axial direction of the pipe section 1 is smaller than 90 °. The side of the second mounting hole 103, which is close to the center of the pipe section 1, is a stepped hole, and the small end of the stepped hole is positioned on the side, which is close to the center of the pipe section 1.

The end of the ultrasonic transducer 13 provided with the acoustic wedge surface is positioned at the small end of the stepped hole and faces the inside of the pipe section 1, the middle part of the ultrasonic transducer 13 is clamped on the stepped surface of the stepped hole, and a sealing gasket III 12 is arranged between the ultrasonic transducer 13 and the stepped surface of the stepped hole. An O-shaped sealing ring 11 is arranged between the side wall of the big end hole of the stepped hole and the circumferential surface of the ultrasonic transducer 13, one side of the ultrasonic transducer 13 away from the pipe section 1 is abutted with a circlip 10 for holes, and the circlip 10 for holes is embedded on the inner wall of the second mounting hole 103. The mounting hole II 103 of the elastic retainer ring 10 for the hole, which is far away from one side of the ultrasonic transducer 13, is internally provided with a first filling layer 14, one end of the ultrasonic transducer 13, which is far away from the pipe section 1, is also provided with a second connecting wire 1301, and the second connecting wire 1301 penetrates through the first filling layer 14 to extend out of the mounting hole II 103.

According to the scheme, the elastic retainer ring 10 for the hole is adopted to replace structures such as a gland nut and a gland commonly used in the prior art to fix the transducer, the end faces such as the sealing gasket III 12 and the O-shaped sealing ring 11 and the axial sealing structure are adopted to seal a gap between the transducer and the mounting hole II 103, and the first filling layer 14 is further adopted to seal the gap between the mounting hole II 103 and the external environment, so that the problem that the ultrasonic transducer 13 is fixed in the mounting hole II 103 is solved, the problem that the sealing gasket is easy to crush is solved, and the effectiveness of the sealing structure of the mounting position of the ultrasonic transducer 13 is improved. And in the scheme, the second mounting hole 103 only needs to be matched with the ultrasonic transducer 13, and the parts such as the circlip 10 for holes and the O-shaped sealing ring 11 are standard parts, so that the two parts can be purchased directly without more material selection and processing cost, and the technical scheme has higher practical value.

In this embodiment, one end of the second mounting hole 103 far away from the pipe section 1 is covered with a transducer end cover 9, one side of the transducer end cover 9 is provided with an elastic clamping strip extending into the second mounting hole 103, and one side of the elastic clamping strip close to the inner wall of the second mounting hole 103 is provided with a clamping block. The inner wall of the second mounting hole 103 is provided with a clamping groove matched with the clamping block. The transducer end cover 9 is fixed on the port of the second mounting hole 103 through the mutual matching among the elastic clamping strips, the clamping blocks and the clamping grooves. The second connection wire 1301 of the ultrasonic transducer 13 penetrates the side wall of the second mounting hole 103 between the transducer end cover 9 and the first potting layer 14, and extends out of the mounting base 102.

In this embodiment, two ends of the pipe section 1 are of a reducing structure, the inner diameter of the pipe at two ends of the pipe section 1 is larger than that of the pipe at the middle, and the side wall of the pipe at the reducing position is in arc transition. The transducer mounting base 102 is disposed on the smaller inner diameter tube wall of the spool piece 1.

In practical situations, the pipelines used for conveying the tested liquid by enterprises are different in materials and comprise steel pipes, cast iron pipes, PE pipes and the like, the pipe wall thicknesses of the pipelines are different, the pipe inner diameters of the pipelines are not identical, and the pipe section inner diameters of the ultrasonic water meters commonly used in the prior art are generally fixed and cannot be fully matched with all the liquid conveying pipelines, so that after the ultrasonic water meters are installed on the different pipelines, the measuring precision of the ultrasonic water meters is affected due to the fact that the pipe diameters of the liquid flowing through are changed to be larger or smaller. In the scheme adopted by the embodiment, the two ends of the inlet and outlet of the pipe section 1 are designed to be of arc-shaped reducing structures, the middle part of the pipe section 1 is in an arc-shaped micro-diameter state relative to the liquid conveying pipelines in front of and behind the installation position of the pipe section, so that the rectification function can be effectively achieved.

In this embodiment, 8 transducer mounting bases 102 are disposed on the outer wall of the pipe section 1, each transducer mounting base 102 is provided with an ultrasonic transducer 13, a gauge outfit mounting base 105 is disposed in the middle of the 8 transducer mounting bases 102, wiring channels are disposed between the 8 transducer mounting bases 102 and the gauge outfit mounting base 105 and on the outer wall of the pipe section 1, the external shape of the wiring channels on the pipe section 1 is a convex ridge, and a second connection wire 1301 of each ultrasonic transducer 13 is respectively communicated to the gauge outfit mounting base 105 through corresponding wiring channels and penetrates out from the top of the gauge outfit mounting base 105.

In this embodiment, a second filling layer is disposed in each wiring channel and in the gauge outfit mounting seat 105, each second connecting wire 1301 respectively penetrates through the second filling layer in the corresponding wiring channel and the second filling layer in the mounting seat 105, and penetrates out from the top of the gauge outfit mounting seat 105 for connecting to a flow integrator in the gauge outfit, and the second filling layer and the first filling layer 14 are both formed by filling with sealant. The material of the sealant can be PU glue 708-5, etc.

The working principle of the basic meter structure of the ultrasonic water meter in the embodiment is as follows: the utility model adopts the temperature and pressure integrated sensor, simplifies the structure that the temperature detection device and the pressure detection device are respectively connected and installed and sealed in the basic meter structure, integrates the output lines of the temperature detection signal and the pressure detection signal, simplifies the external line structure of the ultrasonic water meter, and can directly feed the temperature and pressure detection signal from the outside of the pipe section of the water meter to the flow integrating instrument in the meter head of the water meter for displaying the liquid temperature and the pressure in the pipeline. The installation between the warm-pressing integrated sensor 2 and the pipe section 1 and the installation flange 101 are realized through the check valve, the installation structure and the sealing structure between the check valve and the installation flange 101 are also simpler, the check valve is in a normally open state in the use process after installation, when the warm-pressing integrated sensor 2 needs to be replaced or disassembled, only the warm-pressing integrated sensor 2 needs to be screwed out in a rotating way, and the check valve rod 5 can realize hard sealing with the check valve seat 3 under the action of the spring 6 so as to prevent liquid leakage. The purposes of quick and convenient replacement and disassembly of the temperature and pressure changing integrated sensor 2 and no leakage of liquid are achieved.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should substitute or change the technical solution according to the technical concept of the present utility model, to cover the scope of the present utility model.

Claims (9)

1. An ultrasonic water meter base table structure which is characterized in that: the ultrasonic temperature and pressure integrated sensor comprises a pipe section (1), ultrasonic transducers (13) and a temperature and pressure integrated sensor (2), wherein mounting flanges (101) are respectively arranged at two ends of the pipe section (1), the ultrasonic transducers (13) are mounted on the pipe wall of the pipe section (1) between the two mounting flanges (101), and the temperature and pressure integrated sensor (2) is mounted on one of the mounting flanges (101);

a first mounting hole (104) communicated with the inside of the pipe section (1) is formed in the circumferential outer wall of the mounting flange (101), a one-way valve is connected to one end of the first mounting hole (104) away from the pipe section (1) in a threaded manner, one end of the one-way valve away from the first mounting hole (104) is connected with the connecting end of the temperature and pressure integrated sensor (2) in a threaded manner, and one end of the temperature and pressure integrated sensor (2) provided with a first connecting wire (201) is away from the one-way valve;

the one-way valve comprises a valve seat (3), a valve rod (5), a spring (6) and a spring seat (7); one end of the valve seat (3) is arranged in the first mounting hole (104) in a threaded manner, the other end of the valve seat (3) is positioned outside the first mounting hole (104) and provided with a threaded hole (301), and the connecting end of the temperature and pressure integrated sensor (2) is connected in the threaded hole (301) in a threaded manner; one end of the valve seat (3) connected to the first mounting hole (104) is also provided with a step hole (302), the small end of the step hole (302) is close to the temperature and pressure integrated sensor (2) and is communicated with the threaded hole (301), and the aperture of the threaded hole (301) is larger than that of the small end of the step hole (302); the valve rod (5) is in a stepped cylindrical shape, the small end of the valve rod (5) is slidably connected in the hole of the small end of the stepped hole (302), the small end of the valve rod (5) is abutted against the connecting end of the temperature and pressure integrated sensor (2), the diameter of the large end of the valve rod (5) is larger than the diameter of the small end of the stepped hole (302), and the large end of the valve rod (5) is positioned in the hole of the large end of the stepped hole (302); the spring seat (7) is in threaded connection with one end, far away from the temperature and pressure integrated sensor (2), in the step hole (302), and a through hole is formed in the spring seat (7) along the axial direction of the step hole (302); the spring (6) is arranged in the step hole (302) and is positioned between the large end of the valve rod (5) and the spring seat (7).

2. An ultrasonic water meter base structure according to claim 1, wherein: an inclined shoulder surface (501) is arranged between the large end and the small end of the valve rod (5), a chamfer (303) is arranged on the step surface between the large end and the small end of the step hole (302), and the inclined shoulder surface (501) is matched with the inclined surface of the chamfer (303).

3. An ultrasonic water meter base structure according to claim 2, wherein: the first mounting hole (104) is also a step-shaped hole, the step surface of the first mounting hole (104) is provided with a first sealing gasket (8), and the end part of the valve seat (3) provided with the step hole (302) is abutted against the first sealing gasket (8);

the bottom of the threaded hole (301) is provided with a second sealing gasket (4), and the connecting end of the temperature and pressure integrated sensor (2) is abutted to the second sealing gasket (4).

4. An ultrasonic water meter base structure according to claim 2, wherein: the end face of the large end of the valve rod (5) is provided with a limit groove, one end of the spring (6) is abutted to the limit groove, one side, close to the valve rod (5), of the spring seat (7) is provided with a limit boss, and the other end of the spring (6) is sleeved on the periphery of the limit boss.

5. An ultrasonic water meter base structure according to claim 1, wherein: the device comprises a pipe section (1), and is characterized in that a transducer mounting base (102) is arranged on the outer wall of the pipe section (1), a second mounting hole (103) communicated with the inside of the pipe section (1) is formed in the transducer mounting base (102), the second mounting hole (103) is obliquely arranged, one side, close to the center of the pipe section (1), of the second mounting hole (103) is a stepped hole, and the small end of the stepped hole is located at one side, close to the center of the pipe section (1);

the ultrasonic transducer (13) is provided with the one end of sound wedge face and is located the shoulder hole tip just towards inside the spool piece (1), the middle part joint of ultrasonic transducer (13) in on the shoulder surface of shoulder hole, ultrasonic transducer (13) with be provided with sealing washer three (12) between the shoulder surface of shoulder hole, the big end hole's of shoulder hole lateral wall with be provided with O type sealing washer (11) between the circumference of ultrasonic transducer (13), one side butt that ultrasonic transducer (13) kept away from spool piece (1) has circlip (10) for hole, circlip (10) for hole inlay in on the inner wall of mounting hole two (103), circlip (10) for hole keep away from be provided with filling seal layer one (14) in mounting hole two (103) on one side of ultrasonic transducer (13), ultrasonic transducer (13) keep away from one end of spool piece (1) still is provided with connecting wire two (1301), connecting wire two (1301) pass filling seal layer one (14).

6. The ultrasonic water meter base structure of claim 5, wherein: one end of the second mounting hole (103) far away from the pipe section (1) is covered with a transducer end cover (9), one side of the transducer end cover (9) is provided with an elastic clamping strip extending into the second mounting hole (103), one side of the elastic clamping strip, which is close to the inner wall of the second mounting hole (103), is provided with a clamping block, and the inner wall of the second mounting hole (103) is provided with a clamping groove matched with the clamping block; the connecting wire II (1301) of the ultrasonic transducer (13) penetrates through the side wall of the mounting hole II (103) between the transducer end cover (9) and the first encapsulating layer (14) and extends out of the mounting base (102).

7. The ultrasonic water meter base structure of claim 5, wherein: the two ends of the pipe section (1) are of a variable diameter structure, the inner diameter of a pipeline at the two ends of the pipe section (1) is larger than that of the pipeline at the middle of the pipe section, and the side wall of the pipeline at the variable diameter position is in arc transition;

the transducer mounting base (102) is arranged on the pipe wall with the smaller inner diameter in the pipe section (1).

8. The ultrasonic water meter base structure of claim 6, wherein: be provided with 8 transducer mounting base (102) on the outer wall of spool piece (1) altogether, all install ultrasonic transducer (13) in each transducer mounting base (102), the centre of 8 transducer mounting base (102) is provided with gauge outfit mount pad (105), and 8 transducer mounting base (102) with between gauge outfit mount pad (105), in the outer wall of spool piece (1) all is provided with wiring passageway, each connecting wire two (1301) of ultrasonic transducer (13) are respectively through corresponding wiring passageway intercommunication to gauge outfit mount pad (105), and in the top of gauge outfit mount pad (105) is worn out.

9. The ultrasonic water meter base structure of claim 8, wherein: and a second filling layer is arranged in each wiring channel and each gauge outfit mounting seat (105), each second connecting wire (1301) respectively penetrates through the second filling layer in the corresponding wiring channel and the second filling layer in the mounting seat (105), and the second filling layer and the first filling layer (14) are formed by filling sealant.