Well head gas recovery gas detection tool

Abstract

The utility model relates to a wellhead gas recovery gas detection tool which comprises a gas detector, a wellhead gas outlet pipe and a controller, a sensing probe is arranged in the center of the bottom of the gas detector, an alarm lamp is arranged on one side of the gas detector, a cable interface is arranged on the other side of the gas detector, and a connecting pipeline extends out of the top of the wellhead gas outlet pipe. The top of the connecting pipeline is connected to the sensing probe through threads, a connecting cable is arranged at the cable connector, the other end of the connecting cable is connected with the controller, a display screen is arranged at the top of the front face of the controller, control keys are arranged at the bottom of the front face of the controller, and one side of the surface of the well head gas outlet pipe extends out of a backflow pipe. The other end of the return pipe is connected with a well head gas inlet pipe; according to the utility model, gas detection at the wellhead gas recovery gas outlet pipe is realized, so that the gas can be discharged only after being qualified, and the concept of environmental protection is embodied.

Description

TECHNICAL FIELD

[0001] The utility model relates to wellhead gas recovery technical field, concretely is wellhead gas recovery gas detection instrument. BACKGROUND

[0002] Wellhead gas is mainly composed of methane, but also contains a certain proportion of water, light oil and other impurities. Water and light oil have strong corrosive, seriously affect the equipment efficiency and service life, also can cause equipment pipeline ice block, influence normal production. How to effectively remove harmful ingredients in wellhead gas, reduce the damage to the equipment, is a work that can not be ignored in wellhead gas recovery project.

[0003] For example, China has authorized utility model publication (announcement) number: CN206016793U an energy-saving wellhead gas recovery device, including the separator and the wellhead gas inlet pipe of setting in the separator left side, the separator right side is connected with hydraulic compressor through the gas pipe, the right side of hydraulic compressor is connected with buffer tank through the gas pipe, the buffer tank is connected with dryer through the gas pipe, the right side of dryer is equipped with flowmeter, wellhead gas is separated from the water, light oil and other impurities contained in the gas through the separator first, then pressurized through hydraulic compressor, after pressurization, discharge into buffer tank, after buffering, enter the dryer and carry out dehydration.

[0004] However, the wellhead gas outlet pipe of the above prior art wellhead gas recovery device, without detecting the discharged gas, is not conducive to the concept of environmental protection, and therefore needs to be improved. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of wellhead gas recovery gas detection instrument to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] Wellhead gas recovery gas detection instrument, including gas detection instrument, wellhead gas outlet pipe, controller, the bottom center of gas detection instrument is provided with sensing probe, one side of gas detection instrument is provided with alarm lamp, the other side of gas detection instrument is provided with cable interface, the top of wellhead gas outlet pipe extends out connecting pipeline, the top of connecting pipeline is connected to sensing probe by screw thread, cable interface is provided with connecting cable, the other end of connecting cable is connected with controller, the front top of controller is provided with display screen, the front bottom of controller is provided with control button, the surface one side of wellhead gas outlet pipe extends out backflow pipe, the other end of backflow pipe is connected with wellhead gas inlet pipe.

[0008] Preferably, the front end of the wellhead gas outlet pipe is provided with a first electromagnetic valve at the position of the surface and the connection with the return pipe, and the first electromagnetic valve is electrically connected with the controller.

[0009] Preferably, the surface of the return pipe is provided with a second electromagnetic valve, and the second electromagnetic valve is electrically connected with the controller.

[0010] The controller comprises a data acquisition module, a data analysis module, a device control module and a manual control module.

[0011] The data acquisition module is connected with the gas detector, and the data acquisition module is connected with the data analysis module and the display screen.

[0012] The data analysis module comprises a threshold setting unit and a data evaluation unit.

[0013] The threshold setting unit is connected with the control button.

[0014] The input end of the data evaluation unit is connected with the data acquisition module, and the output end of the data evaluation unit is connected with the device control module.

[0015] The device control module comprises a state setting unit and a control execution unit, the input end of the device control module is connected with the data evaluation unit, and the control execution unit is connected with the first electromagnetic valve and the second electromagnetic valve.

[0016] The manual control module is connected with the control button.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The wellhead gas recovery gas detection tool is provided with a gas detector at the wellhead gas outlet pipe, the gas detector is connected with the controller through a connecting cable, the gas detector detects the methane gas in the wellhead gas in real time, when the set threshold value is exceeded, the second electromagnetic valve is opened and the first electromagnetic valve is closed at the same time, the wellhead gas is returned to the wellhead gas inlet pipe, and the worker opens the first electromagnetic valve and closes the second electromagnetic valve at the same time through the button after finding that the real-time measured data is below the threshold value in the display screen, the gas detection at the wellhead gas recovery gas outlet pipe is realized, and the gas can be discharged only after being qualified, which embodies the concept of environmental protection. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole structure schematic view of the utility model;

[0020] Figure 2 It is a control flow chart of the utility model;

[0021] Figure 3The data analysis module control flow chart of the utility model;

[0022] Figure 4 The equipment control module control flow chart of the utility model.

[0023] In the figure: 1, gas detector;2, sensing probe;3, alarm lamp;4, cable interface;5, wellhead gas outlet pipe;6, connecting pipeline;7, first electromagnetic valve;8, return pipe;9, second electromagnetic valve;10, connecting cable;11, controller;12, display screen;13, control button;14, data acquisition module;15, data analysis module;16, equipment control module;17, threshold setting unit;18, data evaluation unit;19, state setting unit;20, control execution unit;21, manual control module. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the utility model.

[0025] In the description of the utility model, it should be explained that the orientation or position relationship indicated by the terms "vertical", "upper", "lower", "horizontal" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0026] In the description of the utility model, it should also be explained that, unless otherwise explicitly specified and limited, the terms "set", "mount", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected;It can be mechanically connected, or it can be electrically connected;It can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0027] Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be realized in electronic hardware, computer software or a combination of both. In order to clearly illustrate the interchangeability of hardware and software, the components and steps of the examples have been described in the foregoing description in a general manner. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. A person skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0028] Please refer to Figures 1-4 The present application provides a technical solution:

[0029] The wellhead gas recovery gas detection tool comprises a gas detector 1, a wellhead gas outlet pipe 5, a controller 11, a sensing probe 2 arranged at the bottom center of the gas detector 1, an alarm lamp 3 arranged on one side of the gas detector 1, and a cable interface 4 arranged on the other side of the gas detector 1. The gas detector 1 is a mature existing technology, and its internal specific structure and working principle will not be described in detail here. The top of the wellhead gas outlet pipe 5 extends a connecting pipe 6, the top of the connecting pipe 6 is connected to the sensing probe 2 through threads, a connecting cable 10 is arranged at the cable interface 4, the other end of the connecting cable 10 is connected to the controller 11, a display screen 12 is arranged at the top of the front of the controller 11, control buttons 13 are arranged at the bottom of the front of the controller 11, a reflux pipe 8 extends from one side of the surface of the wellhead gas outlet pipe 5, and the other end of the reflux pipe 8 is connected to a wellhead gas inlet pipe.

[0030] Further, a first electromagnetic valve 7 is arranged at the front end of the surface of the wellhead gas outlet pipe 5 and connected to the reflux pipe 8, and the first electromagnetic valve 7 is electrically connected to the controller 11.

[0031] Further, a second electromagnetic valve 9 is arranged on the surface of the reflux pipe 8, and the second electromagnetic valve 9 is electrically connected to the controller 11.

[0032] The controller 11 comprises a data acquisition module 14, a data analysis module 15, a device control module 16 and a manual control module 21.

[0033] The data acquisition module 14 is connected to the gas detector 1, and the data acquisition module 14 is connected to the data analysis module 15 and the display screen 12.

[0034] The data analysis module 15 comprises a threshold setting unit 17 and a data evaluation unit 18.

[0035] The threshold setting unit 17 is connected to the control buttons 13.

[0036] The input end of the data evaluation unit 18 is connected with the data acquisition module 14, and the output end of the data evaluation unit 18 is connected with the device control module 16.

[0037] The device control module 16 comprises a state setting unit 19 and a control execution unit 20, the input end of the device control module 16 is connected with the data evaluation unit 18, and the control execution unit 20 is connected with the first electromagnetic valve 7 and the second electromagnetic valve 9.

[0038] The manual control module 21 is connected with the control button 13.

[0039] The data acquisition module 14 collects the data detected by the gas detector 1 in real time, and transmits the data to the data analysis module 15, and displays the collected data on the display screen 12.

[0040] The data analysis module 15 analyzes the data sent by the data acquisition module 14, if the data meets the requirements, no operation is performed, if the data does not meet the requirements, an electric signal is sent to the device control module 16.

[0041] The device control module 16 controls the first electromagnetic valve 7 and the second electromagnetic valve 9 after receiving the electric signal.

[0042] Further, the data analysis module 15 comprises a threshold setting unit 17 and a data evaluation unit 18.

[0043] The threshold setting unit 17 changes the threshold value through the control button 13 on the surface of the controller 11 according to the actual situation of the wellhead gas collection, and it should be noted that the threshold value does not need to be changed in general.

[0044] The data evaluation unit 18 compares the data sent by the data acquisition module 14 with the threshold value, and sends an electric signal to the device control module 16 when the threshold value is exceeded.

[0045] Further, the device control module 16 comprises a state setting unit 19 and a control execution unit 20, and the state setting unit 19 evaluates the state of the first electromagnetic valve 7 and the second electromagnetic valve 9 after the device control module 16 receives the electric signal, when the state of the first electromagnetic valve 7 and the second electromagnetic valve 9 is the required state, no operation is performed, when the state setting unit 19 is not the required state, an electric signal is sent to the control execution unit 20, and the control execution unit 20 closes the first electromagnetic valve 7 and opens the second electromagnetic valve 9 after receiving the electric signal, and the wellhead gas is returned to the wellhead gas inlet pipe 5.

[0046] Further, the artificial control module 21 directly controls the control execution unit 20 in the equipment control module 16 to open or close the first electromagnetic valve 7 and the second electromagnetic valve 9, and simultaneously changes the state information of the state setting unit 19.

[0047] Specifically, after exceeding the threshold value, the alarm lamp 3 will alarm to remind the staff to come to the controller 11, at this time the controller 11 has opened the second electromagnetic valve 9 and closed the first electromagnetic valve 7, the staff mainly needs to stare at the display screen 12 in real time, when the data information collected in the display screen 12 through the data acquisition module 14 is lower than the threshold value, and the alarm lamp 3 does not alarm, the staff will open the first electromagnetic valve 7 and close the second electromagnetic valve 9 through the control button 13, i.e. the artificial control module 21.

[0048] Working principle: the wellhead gas recovery gas detection tool of the utility model is provided with a gas detector 1 at the wellhead gas outlet pipe 5, the gas detector 1 is connected with the controller 11 through the connecting cable 10, the gas detector 1 detects the methane gas in the wellhead gas in real time, when exceeding the set threshold value, opens the second electromagnetic valve 9 and simultaneously closes the first electromagnetic valve 7, and makes the wellhead gas return to the wellhead gas inlet pipe, after a period of time, the worker discovers that the real-time measured data is below the threshold value from the display screen, opens the first electromagnetic valve 7 and simultaneously closes the second electromagnetic valve 9 through the control button 13, the utility model realizes the gas detection at the wellhead gas recovery gas outlet pipe, and the gas can be discharged only after being qualified, which embodies the concept of environmental protection.

[0049] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the attached claims and equivalents thereof.

Claims

1. A wellhead gas recovery gas detection tool, comprising a gas detector (1), a wellhead gas outlet pipe (5), a controller (11), characterized in that: The bottom center of the gas detector (1) is provided with a sensing probe (2), one side of the gas detector (1) is provided with an alarm lamp (3), the other side of the gas detector (1) is provided with a cable interface (4), the top of the wellhead gas outlet pipe (5) extends a connecting pipeline (6), the top of the connecting pipeline (6) is connected to the sensing probe (2) through threads, the cable interface (4) is provided with a connecting cable (10), the other end of the connecting cable (10) is connected with a controller (11), the front top of the controller (11) is provided with a display screen (12), the front bottom of the controller (11) is provided with a control button (13), the surface of the wellhead gas outlet pipe (5) extends a return pipe (8) on one side, the other end of the return pipe (8) is connected with a wellhead gas inlet pipe.

2. The wellhead gas recovery gas detection tool of claim 1, wherein: The front end of the surface of the wellhead gas outlet pipe (5) and located at the connecting position of the return pipe (8) is provided with a first electromagnetic valve (7), and the first electromagnetic valve (7) is electrically connected with the controller (11).

3. The wellhead gas recovery gas detection tool of claim 1, wherein: The surface of the return pipe (8) is provided with a second electromagnetic valve (9), and the second electromagnetic valve (9) is electrically connected with the controller (11).

4. The wellhead gas recovery gas detection tool of claim 1, wherein: The controller (11) comprises a data acquisition module (14), a data analysis module (15), a device control module (16) and an artificial control module (21). The data acquisition module (14) is connected with the gas detector (1), and the data acquisition module (14) is connected with the data analysis module (15) and the display screen (12). The data analysis module (15) comprises a threshold setting unit (17) and a data evaluation unit (18). The threshold setting unit (17) is connected with the control button (13). The input end of the data evaluation unit (18) is connected with the data acquisition module (14), and the output end of the data evaluation unit (18) is connected with the device control module (16). The device control module (16) comprises a state setting unit (19) and a control execution unit (20), the input end of the device control module (16) is connected with the data evaluation unit (18), and the control execution unit (20) is connected with the first electromagnetic valve (7) and the second electromagnetic valve (9). The artificial control module (21) is connected with the control button (13).

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