Diaphragm type gas meter
By using light sampling technology in membrane gas meter, gas consumption is measured by comparing the reflection amount of black and white disks and reference disks, the problems of complex mechanical structure and large power consumption in the prior art are solved, and a gas meter that saves power, has a long life and is easy to maintain.
Patent Information
- Application Number
- CN202323561040.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2033-12-26
AI Technical Summary
The metering method of existing membrane gas meters depends on complex mechanical structures and electromagnetic effects, with high failure risk and high power consumption. In particular, prepaid membrane gas meters need to display gas consumption, which increases equipment complexity and power consumption.
The gas consumption data is recorded by light sampling method, and the rotation angle of the black and white disk is known by comparing the reflection amount of the black and white disk and the reference disk. There is no need to add an optical emitter to realize the measurement of the gas volume.
This solution saves power, has a long service life, is easy to install and maintain, and does not require the addition of complex mechanical structures and light emitters, reducing the risk of failure.
Smart Images
Figure CN222912828U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gas metering, in particular to a diaphragm gas meter. Background Art
[0002] A diaphragm gas meter is a metering instrument applied in a gas pipeline for recording the actual consumption of gas. The metering principle of the diaphragm gas meter is that when gas passes through, the pressure of the gas causes the diaphragm to reciprocate; the mechanical structure inside the diaphragm gas meter converts the linear reciprocating motion of the diaphragm into a circular motion, and the circular motion drives the mechanical roller counter to rotate, so that each time the diaphragm makes a linear reciprocating motion, a certain amount of gas is discharged, and at the same time, the count of the mechanical roller counter changes, realizing the counting and display of gas consumption.
[0003] To avoid the cost and trouble of manual meter reading, more and more prepaid diaphragm gas meters are now adopted, such as IC card prepaid diaphragm gas meters. In a prepaid diaphragm gas meter, the gas consumption needs to be displayed on an electronic display screen. For example, a reed switch or a Hall switch is used to collect the number of rotations of the mechanical roller counter and then convert it into the gas volume of the gas meter. Whether it is a reed switch or a Hall switch, they both adopt a mechanical structure and utilize the electromagnetic effect, with a relatively complex structure and a relatively high risk of failure. Currently, there are also those that use an optical sampling method to collect gas consumption data, but an optical transmitter needs to be added, increasing the power consumption.
[0004] The utility model attempts to provide a diaphragm gas meter that uses an optical sampling method to record gas consumption data, has a long service life, and does not require an additional optical transmitter. Summary of the Utility Model
[0005] The utility model attempts to provide a diaphragm gas meter that uses an optical sampling method to record gas consumption data, has a long service life, and does not require an additional optical transmitter.
[0006] The utility model provides a diaphragm gas meter, comprising: a front end shell, which is the front part of the shell of the diaphragm gas meter; a hardware circuit board, which is arranged at the back of the front end shell; a black and white disk, which is connected to the main transmission shaft of the diaphragm gas meter, the black and white disk faces the hardware circuit board, the black and white disk includes a plurality of black areas and white areas of equal number and equal area, the black areas and the white areas are fan-shaped, and the black areas and the white areas are alternately arranged around the center of a circle; a reference disk, which is arranged in parallel and close to the black and white disk, and the reference disk faces the hardware circuit board. circuit board; a first light absorbing tube, which is arranged on the hardware circuit board, faces the black and white disk, and the signal received by the first light absorbing tube is transmitted to the control chip of the membrane gas meter; a second light absorbing tube, which is arranged on the hardware circuit board, faces the reference disk, and the signal received by the second light absorbing tube is transmitted to the control chip of the membrane gas meter; and a light-transmitting hole, which is arranged on the front end housing, faces the black and white disk and the reference disk, and can transmit light to the black and white disk and the reference disk.
[0007] Furthermore, the reference disk is a white disk or a black disk.
[0008] Further, the black and white disk includes a semicircular black area and a semicircular white area, or the black and white disk includes two 90° fan-shaped black areas and two 90° fan-shaped white areas, and the black area and the white area are arranged at intervals, or the black and white disk includes three 60° fan-shaped black areas and three 60° fan-shaped white areas, and the black area and the white area are arranged at intervals.
[0009] Furthermore, the reference disk is identical to the black and white disk, and the reference disk is also connected to the main drive shaft of the diaphragm gas meter. The reference disk and the black and white disk differ in phase by a black area or a white area.
[0010] Furthermore, glass beads or glass containing bubbles or gravel are arranged in the light-transmitting hole.
[0011] Furthermore, the diaphragm gas meter also includes a mechanical rotor counter, and the mechanical rotor counter is connected to the main transmission shaft of the diaphragm gas meter.
[0012] According to the diaphragm gas meter provided by the utility model, it adopts light sampling to record gas consumption data, and the rotation angle of the black and white disk is obtained by comparing the reflection amount of the black and white disk and the reference disk. There is no need to add a light transmitter, which saves electricity, has a long service life, and is very convenient to install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 The figure shows a front view schematic diagram of a diaphragm gas meter according to an embodiment of the present utility model.
[0014] Figure 2 The figure shows an exploded schematic diagram of the diaphragm gas meter from a top-down perspective according to an embodiment of the present utility model.
[0015] Figure 3 The figure shows a schematic diagram of a black-and-white disk according to an embodiment of the present utility model.
[0016] Reference numerals:
[0017] 100: Diaphragm gas meter;
[0018] 1: Front-end housing; 2: Hardware circuit board; 3: Black-and-white disk; 4: Reference disk; 5: First light receiving tube;
[0019] 6: Second light receiving tube; 7: Light transmission hole; 8: Gas meter main body. Detailed implementation manners
[0020] To further understand the purpose, structure, features, and functions of the present utility model, the following is a detailed description in conjunction with embodiments.
[0021] Figure 1 The figure shows a front view schematic diagram of a diaphragm gas meter according to an embodiment of the present utility model. Figure 2 The figure shows an exploded schematic diagram of the diaphragm gas meter from a top-down perspective according to an embodiment of the present utility model. Figure 3 The figure shows a schematic diagram of a black-and-white disk according to an embodiment of the present utility model.
[0022] As Figure 1 and Figure 2 shown, an embodiment of the present utility model provides a diaphragm gas meter 100, including a front-end housing 1, a hardware circuit board 2, a black-and-white disk 3, a reference disk 4, a first light receiving tube 5, a second light receiving tube 6, and a light transmission hole 7.
[0023] As Figure 1 and Figure 2 shown, the front-end housing 1 is the front part of the housing of the diaphragm gas meter, and the hardware circuit board 2 is arranged behind the front-end housing 1. On the side of the hardware circuit board 2 opposite to the front-end housing 1 is the gas meter main body 8.
[0024] The black-and-white disk 3 is connected to the main drive shaft of the diaphragm gas meter 100. The black-and-white disk 3 faces the hardware circuit board 2. As Figure 3As shown, the black and white disk 3 includes a plurality of black areas and white areas with equal numbers and equal areas. The black areas and white areas are fan-shaped, and the black areas and white areas are arranged alternately around the center of the circle. Since the black and white disk 3 is connected to the main drive shaft of the diaphragm gas meter 100, when gas flows through, the main drive shaft of the diaphragm gas meter 100 will rotate, and the black and white disk 3 will rotate accordingly.
[0025] For example, as Figure 3 (a) shows, the black and white disk 3 may include a semi-circular black area and a semi-circular white area. Or, as Figure 3 (b) shows, the black and white disk 3 may include two 90° fan-shaped black areas and two 90° fan-shaped white areas, and the black areas and white areas are arranged at intervals. Or the black and white disk 3 may include three 60° fan-shaped black areas and three 60° fan-shaped white areas, and the black areas and white areas are arranged at intervals.
[0026] The reference disk 4 is arranged side by side and close to the black and white disk 3, and the reference disk 4 faces the hardware circuit board 2. In the embodiment of the present invention, no light emitter is provided. The light passes through the light-transmitting holes and shines on the reference disk 4 and the black and white disk 3. The light reflected by the black and white disk 3 is absorbed by the first light absorption tube 5. Since the external environmental light is changing, it is difficult to judge the rotational angle state of the black and white disk if only the light reflected by the black and white disk 3 is collected. Therefore, in the embodiment of the present invention, the reference disk 4 is provided, and the second light absorption tube 6 is provided to absorb the light reflected by the reference disk 4. For example, the reference disk 4 is a black disk or a white disk, and the black and white disk 3 is a black and white alternating disk. Therefore, by comparing the light reflected by the black and white disk 3 with the light reflected by the reference disk 4, the rotational angle state of the black and white disk 3 can be known. As the main drive shaft of the diaphragm gas meter 100 rotates, the black and white disk 3 will continuously rotate, and the light reflected by the black and white disk 3 is absorbed by the first light absorption tube 5. By comparing with the light reflected by the reference disk 4 absorbed by the second light absorption tube 6, the rotational angle state of the black and white disk 3 can be known, so as to realize the measurement of the gas volume. Since the motion state of the black and white disk 3 is completed by comparing with the light reflected by the reference disk 4, an additional light emitter can be not provided, and it is not affected by the external environmental light, saving power, and being convenient for installation, maintenance and repair, and not involving a complex mechanical structure.
[0027] The reference disk 4 can be a white disk or a black disk for easy comparison. The reference disk 4 can also be exactly the same as the black-and-white disk 3. At the same time, the reference disk 4 is also connected to the main drive shaft of the diaphragm gas meter. However, the reference disk 4 is out of phase with the black-and-white disk 3 by a black area or a white area, so that the light reflected by the reference disk 4 is always different from the light reflected by the black-and-white disk 3. For example, when the first light absorption tube 5 faces the black area of the black-and-white disk 3, the second light absorption tube 6 faces the white area of the reference disk 4; when the first light absorption tube 5 faces the white area of the black-and-white disk 3, the second light absorption tube 6 faces the black area of the reference disk 4, so that the light reflected by the reference disk 4 is always different from the light reflected by the black-and-white disk 3, so that the rotation angle state of the black-and-white disk 3 can still be judged by comparing with the reference disk 4.
[0028] As Figure 2 shown, the first light absorption tube 5 is arranged on the hardware circuit board 2. The first light absorption tube 5 faces the black-and-white disk 3 and absorbs the light reflected by the black-and-white disk 3. The signal received by the first light absorption tube 5 is transmitted to the control chip of the diaphragm gas meter for further processing. Since the rotation angle state of the black-and-white disk 3 needs to be judged, the first light absorption tube 5 cannot face the center of the black-and-white disk 3, but faces a position on the black-and-white disk 3 other than the center.
[0029] As Figure 2 shown, the second light absorption tube 6 is arranged on the hardware circuit board 2. The second light absorption tube 6 faces the reference disk 4 and absorbs the light reflected by the reference disk 4. The signal received by the second light absorption tube 6 is transmitted to the control chip of the diaphragm gas meter for further processing. If the reference disk 4 is a simple black disk or white disk, the reference disk 4 can be rotating or stationary, and the second light absorption tube 6 can face any position of the reference disk 4. If the reference disk 4 is a black-and-white disk identical to the black-and-white disk 3, the second light absorption tube 6 cannot face the center of the reference disk 4, but faces a position on the reference disk 34 other than the center, and this position should be the same as the position where the first light absorption tube 5 faces the black-and-white disk 3 to achieve an effective comparison.
[0030] As Figure 1 shown, the light-transmitting hole 7 is arranged on the front end housing 1. The light-transmitting hole 7 faces the black-and-white disk 3 and the reference disk 4, and the light-transmitting hole 7 can transmit light to the black-and-white disk 3 and the reference disk 4. Due to the blockage of the hardware circuit board 2, the light-transmitting hole 7 does not necessarily face the black-and-white disk 3 and the reference disk 4 directly, as long as it can transmit light to the black-and-white disk 3 and the reference disk 4. The light-transmitting hole 7 can be multiple.
[0031] Glass beads or glass containing bubbles or grit and other objects that promote uniform light distribution can be arranged in the light-transmitting hole 7, so that the difference in light intensity transmitted to the black-and-white disk 3 and the reference disk 4 is as small as possible.
[0032] Furthermore, the diaphragm gas meter 100 may further include a mechanical rotary counter, which is connected to the main drive shaft of the diaphragm gas meter. Adding the mechanical rotary counter does not affect the normal use of the optical sampling counting. When some special situations occur, such as the battery power running out, etc., the optical sampling and electronic metering cannot be used normally. At this time, the mechanical rotary counter can still be used to achieve the backup counting function, and the counting of the electronic counting system can be corrected after replacing the new battery.
[0033] According to the diaphragm gas meter provided by the present utility model, it uses the optical sampling method to record the gas consumption data, and knows the rotation angle of the black and white disk by comparing the reflected light amounts of the black and white disk and the reference disk, without the need to add an optical transmitter, which is power-saving, has a long service life, and is very convenient for installation, maintenance and repair.
[0034] In the description of the present utility model, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" orientation or positional relationship are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.
[0035] The present utility model has been described by the above related embodiments. However, the above embodiments are only examples for implementing the present utility model. It must be pointed out that the disclosed embodiments do not limit the scope of the present utility model. On the contrary, any modifications and refinements made without departing from the spirit and scope of the present utility model fall within the scope of the patent protection of the present utility model.
Claims
1. A membrane gas meter, It is characterized in that include: A front end housing, wherein the front end housing is the front part of the housing of the diaphragm gas meter; A hardware circuit board, wherein the hardware circuit board is arranged behind the front-end housing; A black and white disk, the black and white disk is connected to the main transmission shaft of the diaphragm gas meter, the black and white disk faces the hardware circuit board, the black and white disk includes a plurality of black areas and white areas of equal number and area, the black areas and the white areas are fan-shaped, and the black areas and the white areas are alternately arranged around the center of the circle; A reference disk, the reference disk is arranged side by side with the black and white disks, and the reference disk faces the hardware circuit board; a first light absorbing tube, the first light absorbing tube being arranged on the hardware circuit board, the first light absorbing tube facing the black and white disk, and the signal received by the first light absorbing tube being transmitted to the control chip of the membrane gas meter; a second light absorbing tube, the second light absorbing tube being arranged on the hardware circuit board, the second light absorbing tube facing the reference disk, and the signal received by the second light absorbing tube being transmitted to the control chip of the membrane gas meter; as well as A light-transmitting hole is arranged on the front end housing, the light-transmitting hole faces the black and white disk and the reference disk, and the light-transmitting hole can transmit light to the black and white disk and the reference disk.
2. The diaphragm gas meter according to claim 1, It is characterized in that The reference disk is a white disk or a black disk.
3. The diaphragm gas meter according to claim 1, It is characterized in that The black and white disk includes a semicircular black area and a semicircular white area, or The black and white disk includes two 90° sector-shaped black areas and two 90° sector-shaped white areas, and the black areas and the white areas are arranged alternately, or The black-and-white disk includes three 60° sector-shaped black areas and three 60° sector-shaped white areas, and the black areas and the white areas are arranged at intervals.
4. The diaphragm gas meter according to claim 3, It is characterized in that The reference disk is identical to the black and white disk, and is also connected to the main transmission shaft of the diaphragm gas meter. The reference disk and the black and white disk differ in phase by a black area or a white area.
5. The diaphragm gas meter according to claim 1, It is characterized in that Glass beads or glass containing bubbles or gravel are arranged in the light transmission hole.
6. The diaphragm gas meter according to claim 1, It is characterized in that It also includes a mechanical rotor counter, which is connected to the main transmission shaft of the diaphragm gas meter.