Built-in temperature and pressure compensation module of gas meter

Abstract

The utility model discloses a built-in temperature and pressure compensation module of a gas meter, which is characterized by further comprising a temperature and pressure compensation module mounted on a screw valve. The temperature and pressure compensation module comprises a shell installed on the screw valve, a circuit board installed in the shell, a temperature sensor installed on the circuit board, a pressure sensor and a glue pouring layer which is used for packaging the circuit board in the shell and is made of high-temperature-resistant glue. According to the utility model, the temperature and pressure compensation module is arranged in the meter shell, the temperature and pressure in the meter shell are monitored in real time through the temperature and pressure compensation module, and conversion is carried out through the processor according to a relational equation of pressure, volume and temperature; after the converted data is obtained, a signal is transmitted to a meter for metering the gas consumption through a circuit and an aviation plug for compensation, so that the used gas consumption is ensured to be consistent with the displayed consumption number, and the situation that the actual gas consumption is different from the number displayed in the meter due to the factors of temperature and pressure is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gas meter, concretely refers to a built-in temperature and pressure compensation module of gas meter. BACKGROUND

[0002] At present, the volume of gas in the gas meter is very sensitive to the change of temperature and pressure, wherein, according to the pressure, volume and temperature relationship equation, it can be known that under the condition of standard condition (20 DEG C, 101.325kPa), the volume of gas changes 0.34% when temperature changes 1 DEG C, and the volume of gas changes 0.99% when pressure changes 1kPa.Especially in winter in the north, the gas consumption is larger, and the temperature and pressure change are also larger, resulting in more gas deviation from the standard condition, especially due to the low average temperature of the environment, resulting in a larger deviation between the actual consumption of gas and the count in the counting table, which will inevitably affect the fairness of the transaction between gas supply and demand. For this reason, a built-in temperature and pressure compensation module of gas meter is proposed. CONTENT OF UTILITY MODEL

[0003] The utility model discloses a built-in temperature and pressure compensation module of gas meter to solve the above problems.

[0004] In order to achieve the above purpose, the utility model provides a built-in temperature and pressure compensation module of gas meter, including the shell, install the air inlet bushing and the air outlet bushing in the shell, install the joint corresponding with the air inlet bushing and the air outlet bushing on the shell and install the screw stem valve on the air inlet bushing, its characterized in that still include the temperature and pressure compensation module of installing on the screw stem valve, the temperature and pressure compensation module contains the shell of installing on the screw stem valve, installs the circuit board in the shell, installs the temperature sensor on the circuit board, pressure sensor and be used for with the circuit board encapsulation in the shell with high temperature resistant glue made into the glue filling layer, the end of pressure sensor protrude in the glue filling layer, the circuit board is equipped with the treater.

[0005] Further preferably, it further includes the aviation plug of being installed on the shell through riveting pressure and being connected with the circuit board through the line.

[0006] Further preferably, the aviation plug is a ceramic plug or a titanium alloy plug.

[0007] Further preferably, it further includes the mounting seat for installing the shell on the screw stem valve and the positioning seat for adapting with the mounting seat on the shell.

[0008] Further preferably, the mounting seat is provided with the positioning piece for positioning and installing the shell on the mounting seat and the positioning groove for adapting with the positioning piece on the positioning seat, and the mounting hole corresponding in position is arranged on the mounting seat and the positioning seat.

[0009] Further preferably, the positioning seat is a transverse positioning seat arranged transversely on the shell or a longitudinal positioning seat arranged longitudinally on the shell.

[0010] The watch case is compensated by the signal transmitted through the line and the aviation plug to the watch for measuring the gas consumption after the converted data is obtained through the processor according to the pressure, volume and temperature relationship equation, the use of the gas consumption is consistent with the displayed consumption number, and the actual gas consumption is different from the number displayed in the instrument due to the factors of temperature and pressure is avoided.

[0011] The shell is positioned and installed on the mounting seat through the positioning member and the positioning groove arranged on the mounting seat and the positioning seat, the position of the shell installed on the screw valve is limited through the positioning member and the positioning groove, and installation is facilitated.

[0012] The positioning seat is a transverse positioning seat arranged transversely on the shell or a longitudinal positioning seat arranged longitudinally on the shell, which is suitable for different watch cases and different types of screw valves in the watch cases, and can be selected according to space limitations and other conditions. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic view of the utility model;

[0014] Figure 2 is another view of the utility model, and is a partial structural schematic view;

[0015] Figure 3 is a sectional structural schematic view of the utility model;

[0016] Figure 4 is a structural schematic view of the temperature and pressure compensation module and the screw valve in the utility model;

[0017] Figure 5 is a structural schematic view of the screw valve in the utility model;

[0018] Figure 6 is a structural schematic view of the shell in the utility model;

[0019] Figure 7 is a structural schematic view of the shell and the mounting seat in another embodiment of the utility model.

[0020] Legend: 1, watch case; 2, air inlet sleeve; 3, air outlet sleeve; 4, joint; 5, screw valve; 6, shell; 7, mounting seat; 71, positioning piece; 8, positioning seat; 81, positioning groove; 9, mounting hole; 10, temperature and pressure compensation module. DETAILED DESCRIPTION

[0021] Now we will make further description of the built-in temperature and pressure compensation module of the gas meter in the utility model in combination with the drawings.

[0022] It should be noted that all directional indications such as up, down, left, right, front, back, etc. in the embodiments of the utility model are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture such as shown in the drawings, and if the specific posture changes, the directional indications will also change accordingly.

[0023] In the utility model, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood broadly; for example, "fixation" can be fixed connection, or can be detachable connection, or can be integrated; can be mechanical connection, or can be electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication inside two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0024] Referring to Figures 1-7 A built-in temperature and pressure compensation module of a gas meter shown in the drawings, comprising a watch case 1, an air inlet sleeve 2 and an air outlet sleeve 3 mounted in the watch case 1, a joint 4 mounted on the watch case 1 corresponding to the air inlet sleeve 2 and the air outlet sleeve 3, and a screw valve 5 mounted on the air inlet sleeve 2; characterized in that it further comprises a temperature and pressure compensation module mounted on the screw valve 5, wherein the temperature and pressure compensation module 10 comprises a shell 6 mounted on the screw valve 5, a circuit board mounted in the shell 6, a temperature sensor mounted on the circuit board, a pressure sensor, and a glue filling layer made of high-temperature resistant glue for packaging the circuit board in the shell 6, wherein the end of the pressure sensor protrudes from the glue filling layer, and the circuit board is provided with a processor;

[0025] By arranging the temperature and pressure compensation module 10 in the watch case 1, the temperature and pressure in the watch case 1 are monitored in real time by the temperature and pressure compensation module 10, and the converted data are obtained by the processor according to the pressure, volume and temperature relationship equation, and then the signals are transmitted to the watch for compensating the gas consumption through the line and the aviation plug, so as to ensure that the actual gas consumption is consistent with the displayed consumption number, and avoid the difference between the actual gas consumption and the number displayed in the meter due to the factors of temperature and pressure;

[0026] Through the setting of the glue filling layer, the circuit board is protected from the interference of external environment, and is effectively isolated from moisture, dust, grease, corrosion and mechanical impact and the like, so that stable operation and improved service life are ensured.

[0027] In one embodiment, an aviation plug is further installed on the watch case 1 through riveting and connected with the circuit board through a wire; the aviation plug is a ceramic plug or a titanium alloy plug; the ceramic plug or the titanium alloy plug is used to avoid leakage and explosion caused by heat melting of the aviation plug 4 due to high temperature in case of fire, and to improve use safety protection.

[0028] In one embodiment, a mounting seat 7 for mounting the housing 6 is further arranged on the screw valve 5, and a positioning seat 8 for adapting to the mounting seat 7 is further arranged on the housing 6.

[0029] The mounting seat 7 is provided with a positioning piece 71 for positioning and mounting the housing 6 on the mounting seat 7, and the positioning seat 8 is provided with a positioning groove 81 adapted to the positioning piece 71; the mounting seat 7 and the positioning seat 8 are provided with mounting holes 9 corresponding in position.

[0030] The positioning piece 71 and the positioning groove 81 cooperate to limit the position of the housing 6 mounted on the mounting seat 7, and the housing 6 is fixedly mounted on the mounting seat 7 through the bolts passing through the mounting holes 9 after the position is positioned.

[0031] In one embodiment, the positioning seat 8 is a transverse positioning seat arranged transversely on the housing 6 or a longitudinal positioning seat arranged longitudinally on the housing 6.

[0032] The purpose is to make it applicable to different watch cases 1 and different types of valves in the watch cases 1, so that the transverse or longitudinal positioning seat 8 is selected to cooperate with the mounting seat 7 to mount the housing 6 on the mounting seat 7 according to space limitations and the like.

[0033] In use, the utility model discloses the following advantages:

[0034] In the installation of the housing 6, first, the positioning groove 81 on the housing 6 is clamped on the positioning piece 71 of the mounting seat 7, and the housing 6 is pushed forward until the end face of the positioning groove 81 is attached to the end face of the positioning piece 71 to complete the positioning of the housing 6 on the mounting seat 7, and then the bolt for fixing is locked after passing through the two mounting holes 9 to complete the installation and fixation of the housing 6.

[0035] In use: the temperature and pressure of the gas in the watchcase 1 are detected in real time through the temperature sensor and the pressure sensor, and the monitored data are transmitted to the processor, the processor converts the monitored temperature, pressure and volume of the gas, the converted data are compared with the standard condition, and the data are transmitted to the counting watch for compensation, so that the amount displayed in the counting watch is consistent with the actual amount of the gas, and the accuracy of the counting is avoided from being affected by the temperature and pressure factors.

[0036] The protection scope of the utility model is not limited to the above embodiments and their transformations. The routine modifications and replacements made by the skilled in the art based on the content of the embodiments all belong to the protection scope of the utility model.

Claims

1. A built-in temperature and pressure compensation module of a gas meter, comprising a meter case (1), an air inlet bushing (2) and an air outlet bushing (3) installed in the meter case (1), a joint (4) installed on the meter case (1) corresponding to the air inlet bushing (2) and the air outlet bushing (3), and a screw valve (5) installed on the air inlet bushing (2); characterized in that It also comprises a temperature and pressure compensation module installed on the screw valve (5), wherein the temperature and pressure compensation module (10) comprises a shell (6) installed on the screw valve (5), a circuit board installed in the shell (6), a temperature sensor and a pressure sensor installed on the circuit board, and a glue filling layer made of high-temperature resistant glue for packaging the circuit board in the shell (6), wherein the end of the pressure sensor protrudes from the glue filling layer, and the circuit board is provided with a processor.

2. The temperature and pressure compensation module for gas meter according to claim 1, wherein: It also comprises an aviation plug installed on the watch case (1) by riveting and connected with the circuit board through a wire.

3. The temperature and pressure compensation module for gas meter according to claim 2, wherein: The aviation plug is a ceramic plug or a titanium alloy plug.

4. The temperature and pressure compensation module for gas meter according to claim 1, wherein: It also comprises a mounting seat (7) provided on the screw valve (5) for mounting the shell (6) and a positioning seat (8) provided on the shell (6) for adapting to the mounting seat (7).

5. The temperature and pressure compensation module for gas meter according to claim 4, wherein: The mounting seat (7) is provided with a positioning piece (71) for positioning and mounting the shell (6) on the mounting seat (7), and the positioning seat (8) is provided with a positioning groove (81) adapted to the positioning piece (71); the mounting seat (7) and the positioning seat (8) are provided with mounting holes (9) corresponding in position.

6. The temperature and pressure compensation module for gas meter according to claim 4, wherein: The positioning seat (8) is a transverse positioning seat transversely arranged on the shell (6) or a longitudinal positioning seat longitudinally arranged on the shell (6).

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