Method and device for processing water meter antifreeze problem

Abstract

The present invention discloses a method and device for dealing with the antifreeze problem of water meters, comprising the following steps: S1, installing a temperature sensor and a pressure sensor in the water meter respectively; S2, installing a switch pressure relief valve on the outside of the water meter; S3, accurately determining whether the water meter is in a frozen state by collecting water temperature and water pressure; S4, simultaneously setting a temperature threshold, and when the water temperature in the meter is lower than the temperature threshold, starting the timer and opening the switch pressure relief valve; S5, resetting the temperature range threshold and the pressure threshold, and when the water temperature reaches the temperature range threshold and the pressure threshold, opening the switch pressure relief valve, otherwise it does not reach the set temperature range threshold and the pressure threshold. This device can accurately determine whether the water meter is in a frozen state by collecting water temperature and water pressure, and the water meter quickly releases pressure to the water meter through the active switch pressure relief valve, thereby achieving the effect of active antifreeze of the water meter. Compared with the existing technology, it has better antifreeze effect, faster response, and better water saving.

Description

Technical Field

[0001] The present invention relates to the technical field of water meter antifreeze, and in particular to a method and device for processing the problem of water meter antifreeze. Background Art

[0002] In winter, water meters are prone to freezing. In severe cases, the water meter may crack. The current antifreeze methods for water meters are: 1. Wrap the water meter with plastic foam or cotton and linen fabric to prevent it from freezing due to a drop in temperature. 2. Open the faucet slightly to keep it dripping. If there is water flowing in the water pipe, the water meter will also keep running, and flowing water is generally not easy to freeze. 3. Place an electric heating bag on the water meter to prevent it from freezing due to a drop in temperature. However, the above methods have poor antifreeze effects. For method 2, waterproofing is required in advance, which will cause water waste.

[0003] Therefore, in order to correct the above-mentioned defects, we propose a method and device for dealing with the antifreeze problem of water meters. Summary of the Invention

[0004] The technical problem solved by the present invention is to provide a method and a device for processing the antifreeze problem of a water meter.

[0005] To achieve the above object, the present invention provides the following technical solution: a method for treating the antifreeze problem of a water meter, comprising the following steps:

[0006] S1. Install temperature sensor and pressure sensor in the water meter respectively;

[0007] S2. Install a switch pressure relief valve on the outside of the water meter;

[0008] S3. The collected water temperature and water pressure can accurately determine whether the water meter is in a frozen state;

[0009] S4. Set a temperature threshold at the same time. When the water temperature in the meter is lower than the temperature threshold, start the timing and open the pressure relief valve.

[0010] S5. Set the temperature range threshold and pressure threshold again. When the water temperature reaches the temperature range threshold and pressure threshold, open the switch pressure relief valve. If the water temperature does not reach the set temperature range threshold and pressure threshold, delay opening the switch pressure relief valve.

[0011] S6. After opening the pressure relief valve, monitor whether the water temperature is greater than 0 degrees or the water pressure is 1Mpa lower than the highest water pressure. If so, close the pressure relief valve directly. Otherwise, wait for the timer to expire after 5 hours to close the pressure relief valve. After opening the pressure relief valve, when the water temperature in the gauge is ≤0℃ and the pressure in the gauge is ≥3MPa, and the pressure in the gauge cannot be reduced within 5 minutes, an alarm will be issued to indicate the risk.

[0012] Furthermore, the temperature sensor is installed at the water inlet position in the water meter.

[0013] Furthermore, the pressure sensor is installed inside the water meter near the movement.

[0014] Furthermore, the switch pressure relief valve is installed at the center of the water meter.

[0015] Another object of the present invention is to provide a device for dealing with the antifreeze problem of water meters, which includes a meter body, a temperature sensor, a pressure sensor, and a switch pressure relief valve. A control box is installed on the outside of the meter body.

[0016] Furthermore, two lifting structures are installed on the meter body, and the two lifting structures respectively control the temperature sensor and the pressure sensor to lift and lower. The lifting structure includes a box body installed on the outside of the meter body, and a linear lifter is installed in the box body. The telescopic ends of the two linear lifters are respectively connected to the temperature sensor and the pressure sensor.

[0017] Furthermore, the lifting structure also includes a sealing structure, which includes a thickened wall on the surface body, a circular hole is opened in the thickened wall, a sealing plate is installed in the middle of the circular hole, the sealing plate has two through-holes, an upper sealing cover plate is movably provided on the sealing plate, the upper sealing cover plate is connected to the telescopic end of the linear lifter, the temperature sensor and the pressure sensor are respectively connected to the two upper sealing cover plates, a connecting rod is installed at the bottom of the upper sealing cover plate, the bottom of the connecting rod is connected to the lower sealing cover plate, the temperature sensor, the pressure sensor and the connecting rod pass through the sealing plate through the through-holes.

[0018] Furthermore, the bottoms of the temperature sensor and the pressure sensor are respectively kept at a distance from their corresponding lower sealing cover plates, and the distance is greater than the distance from the bottom of the sealing plate to the upper opening of the circular hole.

[0019] Furthermore, a two-way manual valve is installed on one side of the meter body.

[0020] Furthermore, the outside of the watch body is surrounded by a guardrail, which is connected to the watch body after being bent and extended, and an upper half of the guardrail is spaced apart from the outside of the watch body.

[0021] Compared with the existing technology, the beneficial effect of the present invention is that the device can accurately determine whether the water meter is in a frozen state by collecting water temperature and water pressure. The water meter quickly releases pressure by actively switching the pressure relief valve to drip into the water meter, thereby achieving the effect of active anti-freezing of the water meter. Compared with the existing technology, the anti-freezing effect is better, the response is faster, and water saving is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the control flow of the present invention;

[0023] Figure 2 This is a schematic diagram of the main structure of the device in the present invention;

[0024] Figure 3This is a schematic diagram of a partially cutaway structure of the device of the present invention;

[0025] Figure 4 This is a schematic diagram of the rear view structure of the device part of the present invention;

[0026] Figure 5 It is a schematic diagram of the top view of the structure of the device part in the present invention.

[0027] Numbers in the figure:

[0028] 1. Meter body; 2. Control box; 3. Switch pressure relief valve; 4. Temperature sensor; 5. Pressure sensor; 6. Lifting structure; 7. Two-way manual valve; 8. Guard; 61. Thickened wall; 62. Box body; 63. Linear lifter; 64. Upper sealing cover; 65. Sealing plate; 66. Connecting rod; 67. Lower sealing cover. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] The present invention provides a technical solution:

[0031] See also Figure 1 A method for preventing water meters from freezing: When the water temperature inside the meter is less than -2°C, a timer is started and the pressure relief valve is immediately opened. When the water temperature inside the meter is less than or equal to 0°C and greater than -2°C, a timer is started and a determination is made as to whether the water pressure has risen by more than 0.5 MPa. If so, the pressure relief valve is immediately opened. Otherwise, the water temperature is continuously monitored. After a two-hour timeout, the pressure relief valve is opened and the water temperature is monitored to see if it is greater than 0°C or if the water pressure is 1 MPa less than the maximum pressure. If so, the pressure relief valve is immediately closed. Otherwise, the pressure relief valve is closed after the timer expires after 5 hours. After the pressure relief valve is opened, if the water temperature inside the meter is ≤0°C and the pressure inside the meter is ≥3 MPa, and the pressure inside the meter fails to decrease within 5 minutes, an alarm is triggered to indicate a risk (pressure relief valve failure).

[0032] See also Figure 2-5 A device for dealing with the antifreeze problem of a water meter includes a meter body 1, a temperature sensor 4, a pressure sensor 5, and a switch pressure relief valve 3. A control box 2 is installed on the outside of the meter body 1. The data collected by the temperature sensor 4 and the pressure sensor 5 are fed back to the control system in the control box 2, and the operating system controls the switch pressure relief valve 3 and the lifting structure 6.

[0033] The details are as follows:

[0034] Two lifting structures 6 are installed on the meter body 1, and the two lifting structures 6 respectively control the temperature sensor 4 and the pressure sensor 5 to rise and fall. The lifting structure 6 includes a box body 62 installed on the outside of the meter body 1, and a linear lifter 63 is installed in the box body 62. The telescopic ends of the two linear lifters 63 are respectively connected to the temperature sensor 4 and the pressure sensor 5. That is, in non-low temperature weather, the linear lifter 63 drives the temperature sensor 4 and the pressure sensor 5 to separate from the meter body 1 and into the box body 62, preventing the presence of the two from affecting the water pressure in the meter, and preventing the two from generating scale in the meter for a long time. In addition, it is also convenient for maintaining the temperature sensor 4 and the pressure sensor 5.

[0035] Among them, the switch pressure relief valve is installed at the center position of the water meter. The installation structure of the switch pressure relief valve and the water meter adopts the discharge structure and water meter installation method in an antifreeze water meter with patent number: 201811022628.6. Therefore, the method of installing the switch pressure relief valve on the water meter will not be described in detail in this case.

[0036] Among them, the lifting structure 6 also includes a sealing structure, which includes a thickened wall 61 on the meter body 1, a circular hole is opened in the thickened wall 61, a sealing plate 65 is installed in the middle of the circular hole, and the sealing plate 65 has two perforations. An upper sealing cover plate 64 is movably provided on the sealing plate 65, and the upper sealing cover plate 64 is connected to the telescopic end of the linear lifter 63. The temperature sensor 4 and the pressure sensor 5 are respectively connected to the two upper sealing cover plates 64, and the bottom of the upper sealing cover plate 64 is installed A connecting rod 66 is installed, and the bottom of the connecting rod 66 is connected to a lower sealing cover plate 67. The temperature sensor 4, the pressure sensor 5 and the connecting rod 66 pass through the sealing plate 65 through the perforation. That is, when the linear lifter 63 drives the temperature sensor 4 and the pressure sensor 5 to rise, the lower sealing cover plate 67 enters the circular hole and conflicts with the sealing plate 65 to seal the lower opening of the circular hole. When the temperature sensor 4 and the pressure sensor 5 are in the table, the upper sealing cover plate 64 conflicts with the sealing plate 65 to seal the upper opening of the circular hole.

[0037] Among them, the bottoms of the temperature sensor 4 and the pressure sensor 5 are respectively kept at a distance from their corresponding lower sealing cover plates 67, and the distance is greater than the distance from the bottom of the sealing plate 65 to the upper opening of the circular hole. The purpose is to ensure that the temperature sensor 4 and the pressure sensor 5 are not hindered by the sealing plate 65 and can completely enter the box body 62.

[0038] In addition, a two-way manual valve 7 is installed on one side of the meter body 1. The outside of the meter body 1 is surrounded by a guard 8. The guard 8 is bent and extended to connect to the meter body 1. The upper half of the guard 8 is spaced apart from the outside of the meter body 1.

[0039] In the case of severe freezing, the two-way manual valve 7 can be opened to pour hot water from the exposed water inlet so that the hot water enters the meter. The hot water can also be poured between the guardrail 8 and the meter body 1 to increase the temperature.

[0040] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A device for treating the antifreeze problem of a water meter, comprising a meter body (1), characterized in that: The meter body (1) further comprises a temperature sensor (4), a pressure sensor (5), and a switch pressure relief valve (3). A control box (2) is installed on the outside of the meter body (1). Two lifting structures (6) are installed on the meter body (1). The two lifting structures (6) respectively control the temperature sensor (4) and the pressure sensor (5) to move up and down. The lifting structure (6) comprises a box body (62) installed on the outside of the meter body (1). A linear lifter (63) is installed in the box body (62). The telescopic ends of the two linear lifters (63) are respectively connected to the temperature sensor (4) and the pressure sensor (5). The lifting structure (6) further comprises a sealing structure. The sealing structure comprises a sealing structure in the meter body (1). ) on the thickened wall (61), a circular hole is opened in the thickened wall (61), a sealing plate (65) is installed in the middle of the circular hole, the sealing plate (65) has two through-holes, an upper sealing cover plate (64) is movably provided on the sealing plate (65), the upper sealing cover plate (64) is connected to the telescopic end of the linear lifter (63), the temperature sensor (4) and the pressure sensor (5) are connected to the two upper sealing cover plates (64), a connecting rod (66) is installed at the bottom of the upper sealing cover plate (64), the bottom of the connecting rod (66) is connected to the lower sealing cover plate (67), the temperature sensor (4), the pressure sensor (5) and the connecting rod (66) pass through the sealing plate (65) through the through-holes.

2. The device for treating the antifreeze problem of water meters according to claim 1, characterized in that: The bottoms of the temperature sensor (4) and the pressure sensor (5) are respectively kept at a distance from their corresponding lower sealing cover plates (67), and the distance is greater than the distance from the bottom of the sealing plate (65) to the upper opening of the circular hole.

3. The device for treating the antifreeze problem of water meters according to claim 1, characterized in that: A two-way manual valve (7) is installed on one side of the meter body (1).

4. The device for treating the antifreeze problem of water meters according to claim 1, characterized in that: The outer portion of the meter body (1) is surrounded by a guard (8), and the guard (8) is connected to the meter body (1) after being bent and extended, and an upper half of the guard (8) is spaced from the outer portion of the meter body (1).

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