Hydrogen sulfide on-line monitoring device

Abstract

The utility model discloses a hydrogen sulfide on-line monitoring device which comprises a detector and further comprises a gas-liquid separation cavity, the gas-liquid separation cavity is arranged at the bottom of the detector and used for gas-liquid separation, and a blocking piece used for blocking oil and water splashing towards the detector is arranged in the gas-liquid separation cavity; and the oil inlet assembly is arranged at the feeding end of the gas-liquid separation cavity, and the oil inlet assembly is used for inputting oil and gas into the gas-liquid separation cavity. Through the design of the gas-liquid separation cavity, the oil inlet assembly, the exhaust assembly, the oil discharge assembly and the blocking piece, when hydrogen sulfide needs to be detected, oil, water and gas are input into the gas-liquid separation cavity through the oil inlet assembly, the gas ascends to the top of the gas-liquid separation cavity and is detected through the detector, and the situation that the gas is too high in detection accuracy during detection is avoided. Oil and water are in contact with the detector, so that the detector is prevented from being corroded and polluted by the oil and the water, and the detector is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen sulfide detection, in particular to an on-line hydrogen sulfide monitoring device. Background Technique

[0002] Hydrogen sulfide is a common toxic and harmful gas generated in the process of oilfield production. To ensure safe production, it is necessary to detect the hydrogen sulfide concentration at the wellhead to provide a basis for hydrogen sulfide treatment. The hydrogen sulfide treatment at the wellhead usually adopts the method of injecting desulfurizer. The injection concentration of the desulfurizer directly affects the treatment effect. However, the components produced at the wellhead are complex, and often oil, gas and water are produced simultaneously. When the traditional on-line detector probe detects the hydrogen sulfide concentration, it needs to be installed on the production pipeline. However, after long-term use, there is corrosion and pollution of oil and water, which makes the probe unable to operate normally. Content of the Utility Model

[0003] The purpose of the utility model is to provide an on-line hydrogen sulfide monitoring device to solve the problems put forward in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: An on-line hydrogen sulfide monitoring device includes a detector, and further includes:

[0005] A gas-liquid separation chamber, which is arranged at the bottom of the detector. The gas-liquid separation chamber is used for gas-liquid separation, and a blocking member for blocking the splashing of oil and water towards the detector is arranged inside the gas-liquid separation chamber;

[0006] An oil inlet assembly, which is arranged at the feeding end of the gas-liquid separation chamber. The oil inlet assembly is used for inputting oil and gas into the gas-liquid separation chamber;

[0007] An exhaust assembly, which is arranged at the gas outlet end of the gas-liquid separation chamber. The exhaust assembly is used for discharging the gas inside the gas-liquid separation chamber;

[0008] An oil discharge assembly, which is arranged at the oil discharge end of the gas-liquid separation chamber. The oil discharge assembly is used for discharging the residual oil inside the gas-liquid separation chamber.

[0009] Preferably, the oil inlet assembly includes an oil inlet pipe arranged at the feeding end of the gas-liquid separation chamber, and an oil inlet control valve is arranged in the middle of the oil inlet pipe.

[0010] Preferably, the exhaust assembly includes an exhaust pipe arranged at the gas outlet end of the gas-liquid separation chamber, and an exhaust control valve is arranged in the middle of the exhaust pipe.

[0011] Preferably, the oil discharge assembly includes an oil discharge pipe arranged at the oil discharge end of the gas-liquid separation chamber, and an oil discharge control valve is arranged in the middle of the oil discharge pipe.

[0012] Preferably, a pressure gauge for detecting the internal pressure of the gas-liquid separation chamber is provided at the top of the gas-liquid separation chamber.

[0013] Preferably, the blocking member includes a fixed frame fixedly connected to the inner wall of the top end of the gas-liquid separation chamber. A bottom plate is fixedly connected to the bottom end of the fixed frame, and ventilation holes are symmetrically formed on both sides of the fixed frame.

[0014] Preferably, the ventilation holes are inclined.

[0015] Technical effects and advantages of the present utility model:

[0016] Through the design of the gas-liquid separation chamber, the oil inlet assembly, the exhaust assembly, the oil drain assembly and the blocking member, when detecting hydrogen sulfide, oil, water and gas are input into the interior of the gas-liquid separation chamber through the oil inlet assembly. The gas rises to the top of the gas-liquid separation chamber and is detected by the detector, avoiding contact between oil and water and the detector during detection, and avoiding corrosion and pollution of the detector by oil and water, thereby protecting the detector. Description of the drawings

[0017] Figure 1 It is one of the three-dimensional structural schematic diagrams of the present utility model.

[0018] Figure 2 It is the second of the three-dimensional structural schematic diagrams of the present utility model.

[0019] Figure 3 It is the top view structural schematic diagram of the present utility model.

[0020] Figure 4 It is the partial front sectional structural schematic diagram of the present utility model.

[0021] In the figure: 1, detector; 2, gas-liquid separation chamber; 3, oil inlet assembly; 301, oil inlet pipe; 302, oil inlet control valve; 4, exhaust assembly; 401, exhaust pipe; 402, exhaust control valve; 5, oil drain assembly; 501, oil drain pipe; 502, oil drain control valve; 6, pressure gauge; 7, blocking member; 701, fixed frame; 702, bottom plate; 703, ventilation hole. Detailed implementation manners

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] The present utility model provides as Figures 1-4An on-line hydrogen sulfide monitoring device shown in the figure includes a detector 1, and further includes:

[0024] A gas-liquid separation chamber 2 is arranged at the bottom of the detector 1. The gas-liquid separation chamber 2 is used for gas-liquid separation. A blocking member 7 for blocking the splashing of oil and water towards the detector 1 is arranged inside the gas-liquid separation chamber 2;

[0025] An oil inlet assembly 3 is arranged at the feed end of the gas-liquid separation chamber 2. The oil inlet assembly 3 is used for inputting oil and gas into the gas-liquid separation chamber 2;

[0026] An exhaust assembly 4 is arranged at the gas outlet end of the gas-liquid separation chamber 2. The exhaust assembly 4 is used for discharging the gas inside the gas-liquid separation chamber 2;

[0027] An oil drainage assembly 5 is arranged at the oil drainage end of the gas-liquid separation chamber 2. The exhaust assembly 4 is arranged at the oil drainage end of the gas-liquid separation chamber 2. The oil drainage assembly 5 is used for discharging the residual oil inside the gas-liquid separation chamber 2.

[0028] It should be noted that the set detector 1 can be a hydrogen sulfide detector with the model number KL800-EX-L. A control line and an external output line are electrically connected to the interface of the detector 1. During use, the detector 1 is controlled to be turned on and off through the control line, and the detection result is transmitted through the external output line, so as to realize on-line monitoring. The set detector 1 is fixed at the top of the gas-liquid separation chamber 2 by means of threaded connection, so that the detection end of the detector 1 penetrates into the inside of the gas-liquid separation chamber 2. An oil sealing ring is arranged at the connection between the two, and the connection between the detector 1 and the gas-liquid separation chamber 2 is sealed through the sealing ring, so as to prevent gas from overflowing from the connection between the two; when the set gas-liquid separation chamber 2 is in use, first, oil, water and gas are input into the inside of the gas-liquid separation chamber 2 through the oil inlet assembly 3. The oil and water drop due to gravity, and the gas rises, so as to separate the gas and liquid, and the gas moves to one side of the detector 1 for detection.

[0029] Specifically, the oil inlet assembly 3 includes an oil inlet pipe 301 arranged at the feed end of the gas-liquid separation chamber 2. An oil inlet control valve 302 is arranged in the middle of the oil inlet pipe 301. The exhaust assembly 4 includes an exhaust pipe 401 arranged at the gas outlet end of the gas-liquid separation chamber 2. An exhaust control valve 402 is arranged in the middle of the exhaust pipe 401. The oil drainage assembly 5 includes an oil drainage pipe 501 arranged at the oil drainage end of the gas-liquid separation chamber 2. An oil drainage control valve 502 is arranged in the middle of the oil drainage pipe 501. A pressure gauge 6 for detecting the internal pressure of the gas-liquid separation chamber 2 is arranged at the top of the gas-liquid separation chamber 2.

[0030] It should be noted that the pressure gauge 6 is set to detect the pressure in the gas-liquid separation chamber 2, and the pressure value in the gas-liquid separation chamber 2 is displayed in real time through the pressure gauge 6 to help the operator understand the pressure state in the gas-liquid separation chamber 2 and ensure that the pressure in the gas-liquid separation chamber 2 is within a safe range; the set oil inlet control valve 302, exhaust control valve 402, and oil drain control valve 502 are all solenoid valves. When the solenoid valve is not energized, the valve is in an open state. When the electromagnetic coil is energized, the valve core acts to close the valve and prevent fluid flow, thereby controlling the amount of oil and gas input and output into the gas-liquid separation chamber 2 through the oil inlet control valve 302, exhaust control valve 402, and oil drain control valve 502.

[0031] Further, when hydrogen sulfide needs to be detected, first close the oil drain control valve 502, open the oil inlet control valve 302 and the exhaust control valve 402, so that oil, water, and gas can enter the inside of the gas-liquid separation chamber 2 through the oil inlet pipe 301, and discharge the gas in the original gas-liquid separation chamber 2 through the exhaust pipe 401. When the amount of oil, water, and gas entering the gas-liquid separation chamber 2 reaches the required amount, close the oil inlet control valve 302 and the exhaust control valve 402, and separate the oil, water, and gas inside the gas-liquid separation chamber 2, and detect the gas in the gas-liquid separation chamber 2 through the detector 1 to obtain the required detection result. Finally, open the exhaust control valve 402 and the oil drain control valve 502 to discharge the liquid in the gas-liquid separation chamber 2.

[0032] Specifically, the blocking member 7 includes a fixed frame 701 fixedly connected to the inner wall of the top end of the gas-liquid separation chamber 2. The bottom end of the fixed frame 701 is fixedly connected with a bottom plate 702. The two sides of the fixed frame 701 are symmetrically provided with ventilation holes 703, and the ventilation holes 703 are inclined.

[0033] It should be noted that when the liquid is input into the gas-liquid separation chamber 2 through the oil inlet pipe 301, the liquid splashes by colliding with the inner wall of the gas-liquid separation chamber 2. The set bottom plate 702 and fixed frame 701 are both used to block the liquid from splashing towards the detector 1. The inclined ventilation holes 703 are opened to block the liquid from entering the inside of the fixed frame 701. When the liquid contacts the inner wall of the ventilation hole 703, the inclined ventilation hole 703 guides the liquid to the side away from the detector 1.

[0034] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hydrogen sulfide online monitoring device, comprising a detector (1), characterized in that: Also includes: A gas-liquid separation chamber (2), the gas-liquid separation chamber (2) being arranged at the bottom of the detector (1), the gas-liquid separation chamber (2) being used for gas-liquid separation, and a blocking member (7) being arranged inside the gas-liquid separation chamber (2) for blocking oil and water splashing toward the detector (1); An oil inlet assembly (3), the oil inlet assembly (3) being arranged at the feed end of the gas-liquid separation chamber (2), the oil inlet assembly (3) being used to input oil and gas into the gas-liquid separation chamber (2); An exhaust component (4), the exhaust component (4) being arranged at the gas outlet end of the gas-liquid separation chamber (2), and the exhaust component (4) being used to exhaust the gas inside the gas-liquid separation chamber (2); An oil discharge component (5), wherein the gas discharge component (4) is arranged at the oil discharge end of the gas-liquid separation chamber (2), and the oil discharge component (5) is used to discharge residual oil inside the gas-liquid separation chamber (2).

2. The hydrogen sulfide online monitoring device according to claim 1, characterized in that: The oil inlet assembly (3) comprises an oil inlet pipe (301) arranged at the feed end of the gas-liquid separation chamber (2), and an oil inlet control valve (302) is arranged in the middle of the oil inlet pipe (301).

3. The hydrogen sulfide online monitoring device according to claim 1, characterized in that: The exhaust assembly (4) comprises an exhaust pipe (401) arranged at the gas outlet end of the gas-liquid separation chamber (2), and an exhaust control valve (402) is arranged in the middle of the exhaust pipe (401).

4. The hydrogen sulfide online monitoring device according to claim 1, characterized in that: The oil discharge assembly (5) comprises an oil discharge pipe (501) arranged at the oil discharge end of the gas-liquid separation chamber (2), and an oil discharge control valve (502) is arranged in the middle of the oil discharge pipe (501).

5. The hydrogen sulfide online monitoring device according to claim 1, characterized in that: A pressure gauge (6) for detecting the internal pressure of the gas-liquid separation chamber (2) is arranged on the top of the gas-liquid separation chamber (2).

6. The hydrogen sulfide online monitoring device according to claim 1, characterized in that: The blocking member (7) comprises a fixed frame (701) fixedly connected to the inner wall of the top end of the gas-liquid separation chamber (2), the bottom end of the fixed frame (701) is fixedly connected to a bottom plate (702), and air holes (703) are symmetrically provided on both sides of the fixed frame (701).

7. The hydrogen sulfide online monitoring device according to claim 6, characterized in that: The vent holes (703) are arranged obliquely.

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