Gas supply system with safety protection function

A gas supply and safety protection technology, which is applied in the pipeline system, gas/liquid distribution and storage, mechanical equipment, etc., can solve the problems of irregular installation of water heaters, loss of control ability, hypoxia poisoning of users, etc., and achieve rapid transformation and Convenience and effectiveness, avoiding dangerous situations, and simple solutions

Active Publication Date: 2019-06-11
FOSHAN GAS GROUP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] 2. Abnormal consumption of indoor gas
[0027] 3) Leakage of the gas appliance body
Another example is that the user of the water heater loses control ability due to poisoning, and the water heater burns for a long time.
[0030] (2) Abnormal consumption of gas appliance...

Method used

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  • Gas supply system with safety protection function
  • Gas supply system with safety protection function
  • Gas supply system with safety protection function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] A resident customer in the south only uses a double-burner gas cooker. The kitchen area is 6 square meters and the floor height is 2.8 meters. There is no water heater and wall-hung stove installed. The kitchen space volume is about 16 cubic meters.

[0097] According to the traditional scheme, the user installs a set of independent combustible gas alarm device 104 with solenoid valve 112, combustible gas detection probe 106, an over-current cut-off valve 111, an Internet of Things gas meter 105, a double-eye cooker 101 and corresponding gas supply system, see image 3 shown.

[0098] Experimental testing and analysis show that:

[0099] 1) Natural leakage at the leakage point behind the meter: Normally, the natural leakage of gas meters, valves, stoves, etc. is small, 0.02m 3 / h or so, the lower explosion limit of natural gas is calculated as 5%, and the minimum gas volume to reach the explosion limit is 0.8m 3 , it takes 40 hours; the leakage caused by loose thread...

Embodiment approach

[0104] 1. Setting parameters and technical conditions

[0105] 1) The user only needs to install an IoT gas meter 105, a binocular cooker 101, a corresponding gas supply system, and a combustible gas detection probe 106.

[0106] 2) Introduce the switch signal 110 of the two flameout protection cut-off valves of the binocular cooker and the combustible gas concentration signal 113 of the combustible gas detection probe into the control system 105.2 of the Internet of Things gas meter.

[0107] 3) Set 1.0m 3 / h is used as the abnormal consumption data early warning setting value of the system of the present invention; 1.1m 3 / h is used as cut-off setting value.

[0108] 4) Set the flow rate passing through the Internet of Things gas meter for 5 hours to be constant (within the range of ±5.0%) as the pre-warning setting condition for abnormal safety conditions; set the flow rate passing through the Internet of Things gas meter for 5.2 hours to be constant ( The variation rang...

Embodiment 2

[0120] A resident customer in the north uses a double-eye gas cooker 101 and a 10-liter gas instant water heater 102, which are measured by the Internet of Things gas meter 105 and installed in the kitchen. The kitchen area is 6 square meters, the floor height is 2.8 meters, and the kitchen space volume About 16 cubic meters.

[0121] In addition, a 35kw gas wall-hung boiler 103 is installed for heating in winter, and is measured by another G2.5 Internet of Things gas meter 105, all of which are installed on a balcony with a volume of 12 cubic meters.

[0122]According to the traditional scheme, the user needs to install two sets of independent leakage linkage cut-off solenoid valves 116, two combustible gas detection probes for combustible gas alarm devices 117, two over-current cut-off valves 111, two IoT gas meters 105, one One double-eye cooker 101, one gas water heater 102, gas wall-hung boiler 103 and corresponding gas supply system, see Figure 5 , Figure 6 shown.

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Abstract

The invention provides a gas supply system with a safety protection function. The gas supply system comprises an Internet-of-Things gas meter, a combustible gas detection probe, a gas appliance, a field alarm apparatus and an Internet-of-Things network, the Internet-of-Things gas meter internally comprises a metering device, a control system and an overcurrent cut-off valve, and when gas usage data collected by the metering device reaches an abnormal excessive flow consumption data pre-warning value or the combustible gas concentration detected by the combustible gas detection probe reaches acombustible gas concentration pre-warning value, a field pre-warning control module sends out an alarming instruction to the field alarm apparatus to give an alarm; and when a cut-off value is reached, the data are transmitted to a management background through an Internet-of-Things data transmission module, and the management background makes a cut-off instruction to a valve cut-off control module through the Internet-of-Things data transmission module to cut off the overcurrent cut-off valve. Normal gas usage consumption and normal consumption can be judged and discriminated, intelligent pre-warning and gas supply stopping treatment can be conducted on the abnormal situations, and the dangerous situation is effectively avoided.

Description

technical field [0001] The invention relates to a gas meter safety protection system. Background technique [0002] Safety management is a top priority for gas companies! A gas company often faces tens of thousands of end customers, especially residential customers with a large number, wide distribution, and great difficulty in management. Due to the many factors affecting the safe use of gas at the client end, the situation is relatively complicated. Some customers lack the necessary safety knowledge or even weak safety awareness. Therefore, there are many deflagration safety accidents caused by various reasons such as leakage at the gas user end, causing losses to users, society and gas companies. [0003] How to effectively supervise the safe use of gas by gas clients? What kind of technology or method is used to improve the safety performance of residential gas system? Preventing or reducing indoor gas accidents of residential users is a complex and arduous task, and ...

Claims

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Application Information

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IPC IPC(8): F17D1/04F17D3/01F17D5/00F17D5/02
Inventor 尹祥罗东晓孙建勋王华
Owner FOSHAN GAS GROUP CO LTD
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