Valve structure and ultrasonic gas meter

Abstract

The utility model relates to the technical field of ultrasonic gas meters, and particularly discloses a valve structure and an ultrasonic gas meter. The valve structure comprises a valve shell, a valve element assembly and a warm pressing assembly. The temperature and pressure assembly is arranged on the valve shell, the temperature and pressure of fuel gas in a pipeline between an ultrasonic gas meter valve and a fuel gas using equipment valve can be detected in real time through the temperature and pressure assembly, and whether the fuel gas using equipment has the risk of fuel gas leakage or not can be detected in real time; and meanwhile, the valve shell is arranged at the gas outlet of the ultrasonic gas meter, so that a user can be prevented from directly damaging the installation of the ultrasonic metering module from the gas outlet of the ultrasonic gas meter, and the anti-gas-theft effect is achieved. By means of the valve structure, the pressure maintaining and side leakage preventing functions are achieved, and the problem that in the prior art, an ultrasonic gas meter cannot detect the pressure in a pipeline communicating an ultrasonic gas meter valve with a gas using device valve in real time, and consequently potential safety hazards exist in the gas using device is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic gas meter technology, and in particular to a valve structure and an ultrasonic gas meter. Background Technology

[0002] Currently, ultrasonic gas meters measure gas flow using ultrasonic sensors. Compared to traditional diaphragm gas meters, they offer advantages such as high accuracy, high intelligence, strong environmental adaptability, and high stability. Typically, after the gas-using equipment is turned off, both the equipment's valve and the ultrasonic gas meter's valve are closed. At this time, the pipe connecting the ultrasonic gas meter valve and the gas-using equipment valve is sealed and under pressure. If the pressure in this pipe decreases or becomes zero, it indicates a potential leakage risk in the gas-using equipment. Existing ultrasonic gas meters lack the ability to detect this pipe pressure in real time, leading to certain safety hazards associated with gas-using equipment. Utility Model Content

[0003] The purpose of this utility model is to provide a valve structure and an ultrasonic gas meter to solve the problem that existing ultrasonic gas meters cannot detect the pressure in the pipeline connecting the ultrasonic gas meter valve and the gas-using equipment valve in real time, which leads to safety hazards in the gas-using equipment.

[0004] On one hand, this utility model provides a valve structure, which includes: a valve shell, which can be installed in the cavity of an ultrasonic gas meter and is located at the gas outlet of the ultrasonic gas meter; the valve shell has a main gas inlet, a receiving cavity, and a main gas outlet connected in sequence; a sealing port is provided in the receiving cavity; and the main gas outlet is connected to the gas outlet of the ultrasonic gas meter; a valve core assembly, which is movably disposed in the receiving cavity to block or avoid the sealing port; and a temperature and pressure assembly disposed in the valve shell, which is used to detect the temperature and pressure of the gas between the sealing port and the main gas outlet.

[0005] As an optional technical solution for the valve structure, the temperature and pressure assembly includes a housing and a temperature and pressure sensor installed in the cavity of the housing. One end of the housing is inserted into the valve shell and snapped against the outer wall of the valve shell. One end of the housing has a temperature and pressure detection port that communicates with the temperature and pressure sensor. The sealing port and the main gas outlet are both connected to the temperature and pressure detection port. The temperature and pressure sensor is used to detect the temperature and pressure of the gas entering from the temperature and pressure detection port.

[0006] As an optional technical solution for the valve structure, the valve body has an air inlet channel and an air outlet channel. The air inlet channel connects the sealing port and the temperature and pressure detection port, and the air outlet channel connects the main air outlet and the temperature and pressure detection port.

[0007] As an optional technical solution for the valve structure, the valve structure further includes a first sealing element, wherein one end of the outer shell or the inner wall of the valve shell has a first sealing groove, the first sealing element is located in the first sealing groove, and seals the gap between the outer shell and the inner wall of the valve shell.

[0008] As an optional technical solution for the valve structure, the outer shell includes a first housing, a second housing, and an installation tube mounted on the first housing. The first housing and the second housing are snapped together to form an installation cavity. The installation tube communicates with the installation cavity. The temperature and pressure sensor is installed in the installation cavity. The first housing is snapped together with the outer wall of the valve shell. The installation tube passes through the valve shell and has the temperature and pressure detection port.

[0009] As an optional technical solution for the valve structure, the thermo-pressure assembly includes a second seal, which is disposed between the first housing and the second housing to seal the gap between the first housing and the second housing.

[0010] As an optional technical solution for the valve structure, one of the outer walls of the first housing and the valve shell has a buckle and the other has a slot, and the buckle and the slot are engaged.

[0011] As an optional technical solution for the valve structure, the first housing has a wire hole on the side opposite to the second housing. The temperature and pressure assembly includes a wire harness sealing plug and a snap-fit ​​component. The wire hole is connected to the mounting cavity. The wire hole allows the wire harness of the temperature and pressure sensor to pass through. The wire harness sealing plug is inserted into the wire hole and can seal the gap between the wire harness of the temperature and pressure sensor and the wire hole. The snap-fit ​​component snaps into the first housing to fix the wire harness sealing plug.

[0012] As an optional technical solution for the valve structure, the second housing has a side leakage hole on the side opposite to the first housing. The temperature and pressure assembly includes a sealing plug and a fastener. The side leakage hole is connected to the mounting cavity. The sealing plug is inserted into the side leakage hole and can seal the gap between the side leakage hole and the second housing. The fastener can press the sealing plug to the side leakage hole.

[0013] On the other hand, this utility model provides an ultrasonic gas meter, including a gas meter housing, an ultrasonic metering module, and a valve structure as described in any of the above solutions. The ultrasonic metering module and the valve structure are spaced apart within the cavity of the gas meter housing, and the valve structure is located at the gas outlet of the gas meter housing.

[0014] The beneficial effects of this utility model are as follows:

[0015] This invention provides a valve structure comprising a valve housing, a valve core assembly, and a temperature and pressure assembly. The valve housing has a main air inlet, a receiving cavity, and a main air outlet connected in sequence, with a sealing port within the receiving cavity. By employing this valve structure, the temperature and pressure assembly is mounted on the valve housing. This assembly can detect the temperature and pressure of the gas between the sealing port and the main air outlet. When the valve core assembly closes the sealing port (i.e., when the ultrasonic gas meter valve is closed), the temperature and pressure assembly can monitor the temperature and pressure of the gas in the pipeline between the ultrasonic gas meter valve and the gas-using equipment valve in real time. This allows for real-time detection of any gas leakage risk in the gas-using equipment, effectively ensuring its safety. Furthermore, positioning the valve housing at the outlet of the ultrasonic gas meter prevents users from directly damaging the ultrasonic metering module through the outlet, thus preventing gas theft. The valve structure of this invention has the function of pressure holding and preventing side leakage, which effectively solves the problem that the ultrasonic gas meter in the prior art cannot detect the pressure in the pipeline connecting the ultrasonic gas meter valve and the gas-using equipment valve in real time, resulting in safety hazards in the gas-using equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the valve structure in an embodiment of the present utility model;

[0017] Figure 2 This is an exploded view of the valve structure in an embodiment of this utility model;

[0018] Figure 3 This is a cross-sectional view of the valve structure in an embodiment of this utility model;

[0019] Figure 4 This is a cross-sectional view of the valve structure in an embodiment of this utility model;

[0020] Figure 5 This is a cross-sectional view of the ultrasonic gas meter in an embodiment of this utility model.

[0021] In the picture:

[0022] 1. Valve housing; 11. Main air inlet; 12. Receiving cavity; 121. Sealing port; 13. Main air outlet; 14. Air inlet passage; 15. Air outlet passage;

[0023] 2. Valve core assembly;

[0024] 3. Temperature and pressure assembly; 31. Housing; 311. Temperature and pressure detection port; 313. First housing; 3131. Buckle; 314. Second housing; 3141. Side leakage hole; 315. Mounting tube; 32. Temperature and pressure sensor; 33. Second seal; 34. Wiring harness sealing plug; 35. Snap-fit ​​component; 36. Sealing plug; 37. Fastener; 38. Sensor sealing plug;

[0025] 4. First sealing element;

[0026] 5. Gas meter housing; 51. Gas inlet; 52. Gas outlet;

[0027] 6. Ultrasonic metering module. Detailed Implementation

[0028] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] like Figures 1 to 4 As shown, this embodiment provides a valve structure, which includes a valve housing 1, a valve core assembly 2, and a temperature and pressure assembly 3. The valve housing 1 can be installed inside the cavity of an ultrasonic gas meter and is located at the gas outlet 52 of the ultrasonic gas meter. The valve housing 1 has a main gas inlet 11, a receiving cavity 12, and a main gas outlet 13 connected in sequence. The receiving cavity 12 is provided with a sealing port 121, and the main gas outlet 13 is connected to the gas outlet 52 of the ultrasonic gas meter. The valve core assembly 2 is movably disposed within the receiving cavity 12 to seal or avoid the sealing port 121. The temperature and pressure assembly 3 is disposed on the valve housing 1 and is used to detect the temperature and pressure of the gas between the sealing port 121 and the main gas outlet 13.

[0033] The valve structure of this invention incorporates a temperature and pressure component 3 mounted on the valve housing 1. This component detects the temperature and pressure of the gas between the sealing port 121 and the main gas outlet 13. When the valve core assembly 2 closes the sealing port 121 (i.e., the ultrasonic gas meter valve is closed), the temperature and pressure component 3 can monitor the temperature and pressure of the gas in the pipeline between the ultrasonic gas meter valve and the gas-using equipment valve in real time. This allows for real-time detection of any gas leakage risk in the gas-using equipment, effectively ensuring its safety. Simultaneously, positioning the valve housing 1 at the outlet 52 of the ultrasonic gas meter prevents users from directly damaging the ultrasonic metering module through the outlet 52, thus preventing gas theft. This valve structure provides pressure protection and prevents side leakage, effectively solving the problem in existing ultrasonic gas meters where real-time pressure monitoring between the ultrasonic gas meter valve and the gas-using equipment valve is impossible, leading to potential safety hazards in the gas-using equipment.

[0034] The valve core assembly includes a drive unit, a valve stem, and a sealing component. The drive unit is driven to one end of the valve stem, and the other end of the valve stem is connected to the sealing component. The drive unit drives the valve stem to move the sealing component to block or avoid the sealing port 121.

[0035] In some embodiments, the temperature and pressure assembly 3 includes a housing 31 and a temperature and pressure sensor 32 installed inside the cavity of the housing 31. One end of the housing 31 is inserted into the valve housing 1 and snapped against the outer wall of the valve housing 1, which facilitates the installation and removal of the temperature and pressure assembly 3 and the valve housing 1. At the same time, one end of the housing 31 has a temperature and pressure detection port 311 that communicates with the temperature and pressure sensor 32. The sealing port 121 and the main gas outlet 13 are both connected to the temperature and pressure detection port 311. This arrangement ensures that the gas flowing out of the sealing port 121 can smoothly enter the temperature and pressure detection port 311, which facilitates the temperature and pressure sensor 32 to detect the temperature and pressure of the gas entering from the temperature and pressure detection port 311, thus ensuring the accuracy of the temperature and pressure sensor 32.

[0036] Specifically, in order to facilitate the smooth entry of the gas flowing out of the sealing port 121 into the temperature and pressure detection port 311, the valve body 1 has an inlet channel 14 and an outlet channel 15. The inlet channel 14 connects the sealing port 121 and the temperature and pressure detection port 311, and the outlet channel 15 connects the main outlet 13 and the temperature and pressure detection port 311. This arrangement can further ensure that the gas flowing out of the sealing port 121 can smoothly enter the temperature and pressure detection port 311, thereby improving the accuracy of the temperature and pressure sensor 32.

[0037] In this embodiment, the valve structure further includes a first sealing element 4. One end of the outer shell 31 or the inner wall of the valve shell 1 has a first sealing groove. The first sealing element 4 is located in the first sealing groove. The first sealing element 4 can seal the gap between the outer shell 31 and the inner wall of the valve shell 1, thereby ensuring that there is no air leakage between the outer shell 31 and the inner wall of the valve shell 1. The first sealing element 4 includes, but is not limited to, a sealing ring.

[0038] Specifically, such as Figure 2 and Figure 3 As shown, the outer casing 31 includes a first casing 313, a second casing 314, and a mounting tube 315 mounted on the first casing 313. The first casing 313 and the second casing 314 are snapped together to form a mounting cavity, connecting the mounting tube 315 to the mounting cavity. A temperature and pressure sensor 32 is installed inside the mounting cavity. The mounting tube 315 extends into the valve housing 1 and has a temperature and pressure detection port 311. This allows gas entering through the temperature and pressure detection port 311 to enter the mounting cavity, where the temperature and pressure of the gas are then detected by the temperature and pressure sensor 32. Simultaneously, the first casing 313 is snapped into the outer wall of the valve housing 1, facilitating installation and disassembly.

[0039] Furthermore, one of the outer walls of the first housing 313 and the valve housing 1 has a snap fastener 3131 and the other has a slot. The thermo-pressure assembly 3 and the valve housing 1 are connected by snap fastener 3131 and slot.

[0040] In some embodiments, the thermo-pressure assembly 3 includes a second seal 33. The second seal 33 is disposed between the first housing 313 and the second housing 314, and the second seal 33 can seal the gap between the first housing 313 and the second housing 314, ensuring a sealing effect between the first housing 313 and the second housing 314.

[0041] Optionally, the second housing 314 has a second sealing groove, and a second sealing member 33 is disposed within the second sealing groove. The second sealing member 33 includes, but is not limited to, a sealing ring.

[0042] Specifically, the first housing 313 has a wire hole on the side opposite to the second housing 314. The temperature and pressure assembly 3 includes a wire harness sealing plug 34 and a snap-fit ​​member 35. The wire hole communicates with the mounting cavity, allowing the wire harness of the temperature and pressure sensor 32 to pass through. The wire harness sealing plug 34 is inserted into the wire hole to seal the gap between the wire harness of the temperature and pressure sensor 32 and the wire hole. Simultaneously, the snap-fit ​​member 35 is snapped into the first housing 313 to fix the wire harness sealing plug 34, thereby achieving the purpose of sealing the wire harness of the temperature and pressure sensor 32 and the wire hole. The snap-fit ​​member 35 can be a hook that engages with a hook groove provided on the first housing 313.

[0043] Specifically, to enable the sealing performance testing of the thermo-pressure assembly 3, the second housing 314 has a side leakage hole 3141 on the side opposite to the first housing 313. The thermo-pressure assembly 3 includes a sealing plug 36 and a fastener 37. The side leakage hole 3141 communicates with the mounting cavity. The sealing plug 36 is inserted into the side leakage hole 3141 and can seal the gap between the side leakage hole 3141 and the second housing 314. The fastener 37 can press the sealing plug 36 into the side leakage hole 3141. With this configuration, the sealing performance of the thermo-pressure assembly 3 can be tested through the side leakage hole 3141. If it passes the test, the fastener 37 can be used to press the sealing plug 36 into the side leakage hole 3141 to prevent the sealing plug 36 from coming off.

[0044] Optionally, the temperature and pressure assembly 3 also includes a sensor sealing plug 38, which is mounted on the temperature and pressure sensor 32.

[0045] like Figure 5 As shown, this embodiment also provides an ultrasonic gas meter, including a gas meter housing 5, an ultrasonic metering module 6, and the valve structure described above. The ultrasonic metering module 6 and the valve structure are spaced apart within the cavity of the gas meter housing 5, with the valve structure located at the gas outlet 52 of the gas meter housing 5. The gas meter housing 5 has an inlet 51 and an outlet 52. Figure 5The arrows indicate the direction of gas flow. The ultrasonic gas meter of this invention has a temperature and pressure component 3 mounted on the valve housing 1. This component 3 can detect the temperature and pressure of the gas between the sealing port 121 and the main gas outlet 13. When the valve core assembly 2 closes the sealing port 121, i.e., when the ultrasonic gas meter valve is closed, the temperature and pressure component 3 can detect the temperature and pressure of the gas in the pipeline between the ultrasonic gas meter valve and the gas-using equipment valve in real time. This allows for real-time detection of any gas leakage risk in the gas-using equipment, effectively ensuring its safety. Simultaneously, the valve housing 1 is positioned at the gas outlet 52 of the gas meter housing 5, preventing users from directly damaging the installation of the ultrasonic metering module through the gas outlet 52, thus preventing gas theft.

[0046] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A valve structure, characterized in that, include: The valve housing (1) can be installed in the cavity of the ultrasonic gas meter and is located at the gas outlet (52) of the ultrasonic gas meter. The valve housing (1) has a main gas inlet (11), a receiving cavity (12) and a main gas outlet (13) connected in sequence. The receiving cavity (12) is provided with a sealing port (121). The main gas outlet (13) is connected to the gas outlet (52) of the ultrasonic gas meter. The valve core assembly (2) is movably disposed within the receiving cavity (12) to block or avoid the sealing port (121); A temperature and pressure component (3) is disposed on the valve body (1). The temperature and pressure component (3) is used to detect the temperature and pressure of the gas between the sealing port (121) and the main gas outlet (13).

2. The valve structure according to claim 1, characterized in that, The temperature and pressure assembly (3) includes a housing (31) and a temperature and pressure sensor (32) installed in the cavity of the housing (31). One end of the housing (31) is inserted into the valve housing (1) and is snapped against the outer wall of the valve housing (1). One end of the housing (31) has a temperature and pressure detection port (311) that communicates with the temperature and pressure sensor (32). The sealing port (121) and the main gas outlet (13) are both connected to the temperature and pressure detection port (311). The temperature and pressure sensor (32) is used to detect the temperature and pressure of the gas entering from the temperature and pressure detection port (311).

3. The valve structure according to claim 2, characterized in that, The valve body (1) has an air inlet channel (14) and an air outlet channel (15). The air inlet channel (14) connects the sealing port (121) and the temperature and pressure detection port (311), and the air outlet channel (15) connects the main air outlet (13) and the temperature and pressure detection port (311).

4. The valve structure according to claim 2, characterized in that, The valve structure further includes a first sealing element (4), one end of the outer shell (31) or the inner wall of the valve shell (1) has a first sealing groove, the first sealing element (4) is located in the first sealing groove and seals the gap between the outer shell (31) and the inner wall of the valve shell (1).

5. The valve structure according to claim 2, characterized in that, The outer casing (31) includes a first casing (313), a second casing (314), and a mounting tube (315) mounted on the first casing (313). The first casing (313) and the second casing (314) are snapped together to form a mounting cavity. The mounting tube (315) communicates with the mounting cavity. The temperature and pressure sensor (32) is mounted in the mounting cavity. The first casing (313) is snapped together with the outer wall of the valve housing (1). The mounting tube (315) passes through the valve housing (1) and has the temperature and pressure detection port (311).

6. The valve structure according to claim 5, characterized in that, The thermo-pressure assembly (3) includes a second seal (33) disposed between the first housing (313) and the second housing (314) to seal the gap between the first housing (313) and the second housing (314).

7. The valve structure according to claim 5, characterized in that, One of the outer walls of the first housing (313) and the valve housing (1) has a buckle (3131) and the other has a slot, and the buckle (3131) and the slot engage.

8. The valve structure according to claim 5, characterized in that, The first housing (313) has a wire hole on the side opposite to the second housing (314). The temperature and pressure assembly (3) includes a wire harness sealing plug (34) and a snap-fit ​​member (35). The wire hole is connected to the mounting cavity. The wire hole allows the wire harness of the temperature and pressure sensor (32) to pass through. The wire harness sealing plug (34) is inserted into the wire hole and can seal the gap between the wire harness of the temperature and pressure sensor (32) and the wire hole. The snap-fit ​​member (35) is snapped into the first housing (313) to fix the wire harness sealing plug (34).

9. The valve structure according to claim 5, characterized in that, The second housing (314) has a side leakage hole (3141) on the side opposite to the first housing (313). The temperature and pressure assembly (3) includes a sealing plug (36) and a fastener (37). The side leakage hole (3141) communicates with the mounting cavity. The sealing plug (36) is inserted into the side leakage hole (3141) and can seal the gap between the side leakage hole (3141) and the second housing (314). The fastener (37) can press the sealing plug (36) into the side leakage hole (3141).

10. An ultrasonic gas meter, characterized in that, The device includes a gas meter housing (5), an ultrasonic metering module (6), and a valve structure as described in any one of claims 1-9. The ultrasonic metering module (6) and the valve structure are spaced apart within the cavity of the gas meter housing (5), and the valve structure is located at the gas outlet (52) of the gas meter housing (5).

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