The invention discloses an automatic yield and pressure adjusting device for a natural gas producing well and a control method. The automatic yield and pressure adjusting device comprises a natural gas collecting and conveying pipeline and a collecting and conveying pipeline control system. A flow adjusting valve, a main pressure transmitter, a pressure adjusting valve and an orifice plate flow meter are sequentially arranged on the portion, from a well mouth of the natural gas producing well to the output end, of the natural gas collecting and conveying pipeline. The collecting and conveying pipeline control system comprises a controller and a monitor, wherein the controller comprises a data collecting module, an information conversing module, a data storing module and a microprocessor, the data collecting module is connected with the valve position feedback end of the flow adjusting valve, the valve position feedback end of the pressure adjusting valve, the collecting end of the main pressure transmitter and the collecting end of the orifice plate flow meter and transmits collected information to the microprocessor through the information conversing module, and the microprocessor is further connected with the data storing module; the monitor comprises a display module and an input driving module, and the display module and the input driving module are connected with the microprocessor.

Automatic yield and pressure adjusting device for natural gas producing well and control method

The invention provides a detection device for detecting the content of combustible gas in an environment. The detection device comprises a gas probe, a movable bearing device, a control device and an alarming device, wherein the gas probe is arranged on the movable bearing device; the control device can be used for remotely controlling the movement of the movable bearing device; the alarming device is connected with the gas probe or the control device. When the detection device is used, the movable bearing device is remotely controlled through the control device to move and the content of the combustible gas in the surrounding environment is detected through the gas probe; when a pre-set critical value is reached, the alarming device is announced to give an alarm or alarm information is sent to the control device.

Detection device for detecting content of combustible gas in environment

The invention discloses a freezing blockage preventing device, which comprises a throttling valve, a tee short joint and a water nozzle assembly, wherein one end of the throttling valve is connected with one end of a wellhead of a gas well to reduce the pressure of the wellhead, the other end of the throttling valve is connected with a first end of the tee short joint, a second end of the tee short joint is connected with one end of the water nozzle assembly, a third end of the tee short joint is connected with a collecting and conveying pipeline, one side of the water nozzle assembly is connected to a heat tracing and water mixing pipeline, and the water nozzle assembly is used for spraying hot water in the heat tracing and water mixing pipeline to an outlet of the throttling valve, so as to avoid the freezing blockage of the throttling valve when oil-gas-water flows through the throttling valve and generates a hydrate. The freezing blockage preventing device has the advantages that the freezing blockage of the throttling valve can be prevented without using external heating equipment; the operation is simple, the cost is low, and the efficiency is high.

Freezing blockage preventing device

The invention provides a well head gas recycling system. The well head gas recycling system comprises a gas getting pipeline and a first-time gas getting branch, the gas getting pipeline is connectedwith an outlet of a gas field, raw material gas in the gas field is conveyed outwards and is treated to obtain natural gas, a heating furnace, a throttling valve, a first valve, a purifying device anda gas generating set are sequentially arranged on the gas getting pipeline, the purifying device is connected with the heating furnace and provides natural gas for the heating furnace, the first-timegas getting branch communicates with the gas getting pipeline, the first-time gas getting branch and the first valve are arranged side by side, a second valve and a gas separator are sequentially arranged on the first-time gas getting branch, the second valve controls on and off between the gas separator and the throttling valve, the gas generating set and the heating furnace are connected with an outlet of the gas separator, when the first-time gas getting branch is in communication, the raw material gas is separated and filtered by the gas separator, natural gas is obtained, the natural gasis conveyed to the gas generating set and the heating furnace, and the gas generating set and the heating furnace can be started.

Well head gas recycling system

The invention provides a probe for detecting combustible gas. The probe comprises a shell body, wherein the shell body is internally provided with a containing cavity with upper and lower openings; a sensor bearing seat is mounted at the upper part of the containing cavity. The upper surface of the sensor bearing seat is inward concave to form a detection cavity and a containing through hole is formed in the middle of the sensor bearing seat; a combustible gas combustion sensor is arranged in the sensor bearing seat. The sensor is electrically connected with a functional circuit board; the functional circuit board is used for acquiring, processing and transmitting data, is connected with an external interface and is conveniently subjected to data exchange with the outer side; the external interface is arranged at the lower opening of the containing cavity of the shell body. The probe for detecting the combustible gas, provided by the invention, can be used for effectively and accurately detecting the content of the combustible gas in the environment.

Probe for detecting combustible gas

The invention provides a natural gas producing well production and pressure automatically adjusting intelligent control system, belonging to the field of natural gas development and production technology and automatic control technology. The system is an intelligent control system formed by a computer, a PLC, related process equipment and a measuring meter in the natural gas field development and production process. According to the system, through the method of the combination of the automation technology and the natural gas development and production technology, the intelligent control technology is applied in the production process of a natural gas well, the gas well production and wellhead pressure are automatically controlled, the natural gas production and wellhead pressure can be automatically adjusted and controlled according to a production need, and technical method and guarantee are provided for the optimization of the natural gas field development speed and the realization of a best working effect. The technology can be widely applied to the production control of different types of natural gas field producing wells at home and abroad, and the system has a targeted intelligent monitoring alarm function for a gas field production well containing high sulfate gas at the same time.

Natural gas producing well production and pressure automatically adjusting intelligent control system

The utility model discloses an intelligent gas collection probe which comprises a probe gas hood, an anti-explosion piece, a probe shell and an external interface unit, wherein a gas sensor, a signal preprocessing unit and a central processing unit are sequentially arranged in the probe shell from top to bottom; the signal output end of the gas sensor is connected with the signal input end of the signal preprocessing unit; the signal output end of the signal preprocessing unit is connected with the signal input end of the central processing unit; and the signal output end of the central processing unit is connected with the external interface unit According to the intelligent gas collection probe disclosed by the utility model, the gas sensor, the signal preprocessing unit and the central processing unit are arranged in the intelligent probe shell, so that the gas sensor is convenient to use Moreover, the collection probe disclosed by the utility model is provided with an extension rod, so that the application range of the probe disclosed by the utility model is wide

Intelligent gas collection probe

A gas detection digital bridge and intelligent processing technology is used in the technical field of gas detection and monitoring, is a technology combining an electronic technology and a gas detection and monitoring technology, and can be widely used in the field mainly including environmental field gas detection and monitoring, and security field combustible / toxic and harmful gas detection and monitoring. The gas detection digital bridge and intelligent processing technology is a digital intelligent technological innovation aiming at traditional gas detection circuit, overcomes the traditional circuit weaknesses, uses a DBC (digital bridge circuit) to replace an analog bridge, uses an intelligent software to replace an analog pre-amplification and rear processing circuit, full plays the advantages of the intelligent software, not only reduces the number of circuit components, saves the circuit space, is more conducive to improving the anti-jamming ability, stability, detection accuracy of related products, is beneficial to prolonging the service life, and greatly improves the quality of the products.

Gas detection digital bridge and intelligent processing technology

The invention discloses a gas detection digital bridge and a detection processing method thereof The gas detection digital bridge comprises a gas sensor power supply circuit, a gas sensor, a signal filter circuit, a two-way analog to digital conversion device and a singlechip, wherein the voltage output end of the gas sensor power supply circuit and the voltage output end of the gas sensor are connected with two signal input ends of the signal filter circuit, respectively, two signal output ends of the signal filter circuit are connected with two signal input ends of the two-way analog to digital conversion device, respectively, and the two-way analog to digital conversion device is connected with the singlechip The gas detection digital bridge disclosed by the invention is used for replacing an analog bridge to eliminate the influence of a supply voltage on the measurement precision of the gas sensor, and such processing circuits as an amplifying circuit do not need to be arranged, thereby not only reducing the number of circuit elements and saving the circuit space, but also improving the anti-jamming capability, the stability and the measurement precision of related products, prolonging the service life of the products and greatly improving the product quality

Gas detection digital bridge and detection processing method thereof

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Natural gas producing well production and pressure automatically adjusting intelligent control system

Intelligent gas collection probe

Gas detection digital bridge and intelligent processing technology

Gas detection digital bridge and detection processing method thereof