A positive pressure explosion-proof device with online chlorine ion detection function

Abstract

This utility model discloses a positive pressure explosion-proof device with online chloride ion detection function, belonging to the technical field of positive pressure explosion-proof devices. It includes an analysis device system, a pretreatment chamber, an electrical control system, an explosion-proof positive pressure control system, an air conditioning cooling system, and an explosion-proof device mechanical frame. The analysis device system has an airtight outer shell at the top and a pretreatment chamber at the bottom; the electrical control system is located on the upper left side, and the explosion-proof positive pressure control system is located on the lower left side; the air conditioning cooling system is on the right side. This utility model can monitor the chloride ion concentration in production water on offshore platforms in real time under flammable and explosive environments, simultaneously completing data storage, transmission, and historical curve generation; it can adapt to harsh offshore environments, extending instrument life; and it reduces gas consumption and saves energy through a two-stage switching explosion-proof solenoid valve, solving the problem that existing devices cannot meet the chloride ion monitoring needs of offshore platforms.

Description

Technical Field

[0001] This utility model relates to a positive pressure explosion-proof device, specifically a positive pressure explosion-proof device with online chloride ion detection function. Background Technology

[0002] During offshore platform production, it is necessary to monitor the chloride ion concentration in the production water in real time online, and simultaneously store, transmit, and generate historical data curves. Positive pressure explosion-proof chloride ion analyzers prevent surrounding flammable gases from entering the housing by introducing fresh air at a certain pressure into the chamber, thus isolating ignition sources to meet explosion-proof requirements. The safe positive pressure enclosure can house non-explosion-proof system components such as the chloride ion analyzer and sample cups, helping to reduce the overall size of the instrument, improve its aesthetics, and optimize its performance.

[0003] In existing analytical systems, sample cups and reagent bottles are arranged on a platform connected to a purified water tank. The detection solution generated after displacement and colorimetric reactions enters the chloride ion analyzer to perform photoelectric detection, concentration calculation, result output, and over-limit alarms. However, existing devices are insufficient in adapting to the harsh environment of offshore platforms, characterized by abundant salt spray, easy salt crystal formation, large diurnal temperature variations, and high humidity. Furthermore, gas consumption control needs optimization, and the system cannot efficiently meet the comprehensive needs of online chloride ion monitoring on offshore platforms. Summary of the Invention

[0004] This invention proposes a positive pressure explosion-proof device with online chloride ion detection function to solve the problems of existing technologies that cannot efficiently monitor the chloride ion concentration in production water in the flammable and explosive environment of offshore platforms, and that are difficult to adapt to harsh environments and have high gas consumption. The device can realize the functions of synchronously storing and transmitting test data and generating historical record curves.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a positive pressure explosion-proof device with online chloride ion detection function, including an analysis device system, a pretreatment chamber, an electrical control system, an explosion-proof positive pressure control system, an air conditioning cooling system, and an explosion-proof device mechanical frame; the analysis device system has an airtight outer shell at the top and a pretreatment chamber at the bottom; the electrical control system is located at the upper left and the explosion-proof positive pressure control system is located at the lower left; the air conditioning cooling system is located at the right; the pretreatment chamber includes a basket filter, a water sample pressure reducing valve, and an explosion-proof electromagnetic valve for draining liquid to the platform floor drain. Valves; the air conditioning cooling system includes an explosion-proof air conditioner, an air conditioning protective frame, and an air conditioning cover; the analytical device system includes a chloride ion analyzer, an alkali tank, a level sensor, sample cups, reagent cups, a pure water tank, a waste liquid tank, and a reagent bottle arrangement table; the electrical control system includes an electrical control panel, a panel operation panel, and an explosion-proof touch screen; the explosion-proof positive pressure control system includes a positive pressure controller, a pneumatic triplet, an explosion-proof solenoid valve, a one-way throttle valve, a purge gas pipe, an explosion-proof pressure transmitter, and a flame arrester; the explosion-proof device mechanical frame includes a device base, a device frame, a positive pressure device housing, and a positive pressure chamber cabinet door.

[0006] The sample cups and reagent bottles in the analytical device system are connected to a pure water tank. After displacement reaction and color development reaction, the sample enters the reagent cup, and the generated detection solution enters the chloride ion analyzer. The chloride ion analyzer is connected to the waste liquid tank, which corresponds to the alkali tank. The waste liquid tank is connected to the platform drain.

[0007] The explosion-proof air conditioner in the air conditioning cooling system corresponds to the sample cup in the analysis device system, and the air conditioning protective frame and air conditioning cover are installed on the outside of the explosion-proof air conditioner.

[0008] The electrical control panel in the electrical control system is communicatively connected to the chloride ion analyzer, and is also connected to the explosion-proof touch screen. The electrical control panel is electrically connected to the solenoid valves in the analysis device system and the pretreatment chamber, respectively.

[0009] The pneumatic triplet and explosion-proof solenoid valve in the explosion-proof positive pressure control system are connected in sequence. The explosion-proof solenoid valve is connected to the positive pressure chamber of the analysis device system and the positive pressure chamber of the electrical control system through the purge air pipe. The flame arrester is connected to the positive pressure chamber of the analysis device system and the positive pressure chamber of the electrical control system. The explosion-proof pressure transmitter is electrically connected to the positive pressure controller, and the positive pressure controller is electrically connected to the positive pressure chamber equipment.

[0010] The explosion-proof solenoid valve is a two-position switching type, corresponding to the ventilation throttle valve position and the operation throttle valve position respectively.

[0011] The positive pressure explosion-proof device with online chloride ion detection function designed using the above-mentioned technical solution has the following advantages: 1. It can monitor the chloride ion concentration in the production water of offshore platforms in real time in flammable and explosive gas environments, and simultaneously store, retrieve, and transmit online test data to generate historical record curves; 2. With the help of the explosion-proof positive pressure control system and the airtight shell, it can adapt to the harsh air environment of offshore platforms, which is full of salt spray, salt crystals, large temperature difference between day and night, and high humidity. It avoids salt spray crystals from damaging the working chips of the analytical instruments, prevents the circuit board from short-circuiting due to salt spray crystals, and maximizes the service life of the instruments. 3. The positive pressure gas circuit area is equipped with a two-position switching explosion-proof solenoid valve. When the gas exchange throttle valve is in position, it controls the system cavity to perform purging work. After purging is completed, it switches to the operating throttle valve position to maintain positive pressure in the cabinet, reduce gas consumption, and save protective gas energy. Attached Figure Description

[0012] Figure 1 Axonometric view of the present invention; Figure 2 This is a schematic diagram showing the overall structure of the present invention; Figure 3 This diagram shows the structure of the analytical device of this utility model. Figure 4 This diagram shows the explosion-proof positive pressure control system of this utility model. Figure 5 This is an isometric view of the other side of the present invention; Figure 6 This is a front view of the present invention; Figure 7 This is a left view of the present invention; Figure 8 This is a right view of the present invention; Figure 9 This utility model Figure 6 The AA direction is a sectional view; Figure 10 This utility model Figure 7 The middle BB direction is a sectional view.

[0013] In the diagram: 1-Pretreatment chamber, 101-Basket filter, 102-Water sample pressure reducing valve, 103-Explosion-proof solenoid valve; 2-Air conditioning cooling system, 201-Explosion-proof air conditioner, 202-Air conditioning protective frame, 203-Air conditioning cover; 3-Analytical device system, 301-Chloride ion analyzer, 302-Alkali bath, 303-Level sensor, 304-Sample cup, 305-Reagent cup, 306-Pure water tank, 307-Waste liquid tank, 308-Reagent bottle arrangement table; 4-Electrical Control system, 401-Electrical control panel, 402-Panel operation panel, 403-Explosion-proof touch screen; 5-Explosion-proof positive pressure control system, 501-Positive pressure controller, 502-Pneumatic triplet, 503-Explosion-proof solenoid valve, 504-One-way throttle valve, 505-Purge air pipe, 506-Explosion-proof pressure transmitter, 507-Flame arrester; 6-Explosion-proof device mechanical frame, 601-Device base, 602-Device frame, 603-Positive pressure device housing, 604-Positive pressure chamber cabinet door. Detailed Implementation

[0014] The following description, in conjunction with the accompanying drawings, details a positive pressure explosion-proof device with online chloride ion detection function according to this utility model.

[0015] This utility model discloses a positive pressure explosion-proof device with online chloride ion detection function. See [link to relevant documentation]. Figures 1 to 10 The system includes an analysis device system 3, which has an airtight outer shell at the top. An electrical control system 4 is located on the upper left side of the analysis device system 3, an air conditioning cooling system 2 is located on the right side, a pretreatment chamber 1 is located at the bottom, and an explosion-proof positive pressure control system 5 is located on the lower left side. The explosion-proof device mechanical frame provides positive pressure shell and device support for each part.

[0016] The pretreatment chamber 1 of this utility model includes a basket filter 101, a water sample pressure reducing valve 102, and an explosion-proof solenoid valve 103 for draining liquid to the platform floor drain. The air conditioning cooling system 2 includes an explosion-proof air conditioner 201, an air conditioning protective frame 202, and an air conditioning cover 203. The analysis device system 3 includes a chloride ion analyzer 301, an alkali tank 302, a liquid level sensor 303, a sample cup 304, a reagent cup 305, a pure water tank 306, a waste liquid tank 307, and a reagent bottle arrangement table 308. The electrical control system 4 includes an electrical control panel 401, a panel operation panel 402, and an explosion-proof touch screen 403. The explosion-proof positive pressure control system 5 includes a positive pressure controller 501, a pneumatic triplet 502, an explosion-proof solenoid valve 503, a one-way throttle valve 504, a purge air pipe 505, an explosion-proof pressure transmitter 506, and a flame arrester 507. The explosion-proof device mechanical frame 6 includes a device base 601, a device frame 602, a positive pressure device housing 603, and a positive pressure chamber cabinet door 604.

[0017] The sample cup 304 and reagent bottle arrangement platform 308 in the analysis device system 3 are connected to the pure water tank 306. After displacement reaction and color development reaction, the sample enters the reagent cup 305, and the generated detection solution enters the chloride ion analyzer 301. The chloride ion analyzer 301 is connected to the waste liquid tank 307, which corresponds to the alkali solution tank 302. The waste liquid tank 307 is also connected to the platform floor drain.

[0018] The explosion-proof air conditioner 201 in the air conditioning cooling system 2 corresponds to the sample cup 304 in the analysis device system 3, and the air conditioning protective frame 202 and the air conditioning cover 203 are installed on the outside of the explosion-proof air conditioner 201.

[0019] The electrical control panel 401 in the electrical control system 4 is connected to the chloride ion analyzer 301. The electrical control panel 401 is connected to the explosion-proof touch screen 403. The electrical control panel 401 is electrically connected to the solenoid valves in the analysis device system 3 and the pretreatment chamber 1, respectively.

[0020] The pneumatic triplet 502 and explosion-proof solenoid valve 503 within the explosion-proof positive pressure control system 5 are connected in sequence. The explosion-proof solenoid valve 503 is connected to the positive pressure chamber of the analysis device system and the positive pressure chamber of the electrical control system via purge air pipes 505. The flame arrester 507 is connected to the positive pressure chamber of the analysis device system and the positive pressure chamber of the electrical control system. The explosion-proof pressure transmitter 506 is electrically connected to the positive pressure controller 501, and the positive pressure controller 501 is electrically connected to the positive pressure chamber equipment. The explosion-proof solenoid valve 503 is a two-position switching type, corresponding to the ventilation throttle valve position and the operation throttle valve position respectively.

[0021] The working principle of this utility model is as follows: Before chloride ion detection, protective gas is introduced into the positive pressure cabinet, the explosion-proof solenoid valve is switched to the ventilation throttle valve for purging, and after purging, it is switched to the running throttle valve to maintain the positive pressure in the cabinet with a small flow of gas.

[0022] After purging, the sampling port is connected, and sample pretreatment is completed. The sample cup 304, reagent bottle arrangement platform 308, and pure water tank 306 within the analysis device system 3 are connected. After displacement and colorimetric reactions, the sample enters the reagent cup 305. The generated detection solution enters the chloride ion analyzer 301, where photoelectric detection, concentration calculation, result output, and over-limit alarm are performed. Wastewater and waste liquid generated by the chloride ion analyzer 301 flow into the waste liquid tank 307, where they undergo a neutralization reaction with the alkali solution in the alkali solution tank 302 before being discharged through the platform drain. The explosion-proof air conditioner 201 in the air conditioning cooling system 2 cools the sample solution in the sample cup 304 within the analysis device system 3. The air conditioning protective frame 202 and air conditioning cover 203 provide mechanical protection and dust protection. The electrical control panel 401 of the electrical system 4 communicates with the chloride ion analyzer 301, uploading data to the explosion-proof touchscreen 403 for human-machine interaction, and simultaneously controlling the operation of the solenoid valves in the analysis device system 3 and pretreatment chamber 1. The pneumatic triplet 502 and explosion-proof solenoid valve 503 in the explosion-proof positive pressure control system 5 introduce protective gas into the positive pressure chamber of the analysis device system and the positive pressure chamber of the electrical control system, and then discharge it through the flame arrester 507 to maintain positive pressure. When a low-pressure signal is detected by the explosion-proof pressure transmitter 506, the positive pressure controller 501 stops supplying power to the positive pressure chamber equipment to achieve the protection function.

Claims

1. A positive pressure explosion-proof device with online chloride ion detection function, characterized in that: The system includes an analytical device system (3), a pretreatment chamber (1), an electrical control system (4), an explosion-proof positive pressure control system (5), an air conditioning cooling system (2), and an explosion-proof mechanical frame (6). The analytical device system (3) has an airtight outer shell at the top and a pretreatment chamber (1) at the bottom. The electrical control system (4) is located at the top left and the explosion-proof positive pressure control system (5) is located at the bottom left. The air conditioning cooling system (2) is located on the right. The pretreatment chamber (1) includes a basket filter (101), a water sample pressure reducing valve (102), and an explosion-proof solenoid valve (103) for draining liquid to the platform floor drain. The air conditioning cooling system (2) includes an explosion-proof air conditioner (201), an air conditioning protective frame (202), and an air conditioning cover (203). The analytical device system (3) includes a chloride ion analyzer (301). The system includes an alkali tank (302), a level sensor (303), a sample cup (304), a reagent cup (305), a pure water tank (306), a waste liquid tank (307), and a reagent bottle arrangement table (308); the electrical control system (4) includes an electrical control panel (401), a panel operation panel (402), and an explosion-proof touch screen (403); the explosion-proof positive pressure control system (5) includes a positive pressure controller (501), a pneumatic triplet (502), an explosion-proof solenoid valve (503), a one-way throttle valve (504), a purge air pipe (505), an explosion-proof pressure transmitter (506), and a flame arrester (507); the explosion-proof device mechanical frame (6) includes a device base (601), a device frame (602), a positive pressure device housing (603), and a positive pressure chamber cabinet door (604).

2. The positive pressure explosion-proof device with online chloride ion detection function according to claim 1, characterized in that: The sample cup (304) and reagent bottle arrangement platform (308) in the analytical device system (3) are connected to the pure water tank (306). After displacement reaction and color development reaction, the sample enters the reagent cup (305), and the generated detection solution enters the chloride ion analyzer (301). The chloride ion analyzer (301) is connected to the waste liquid tank (307), which corresponds to the alkali tank (302). The waste liquid tank (307) is connected to the platform drain.

3. The positive pressure explosion-proof device with online chloride ion detection function according to claim 1, characterized in that: The explosion-proof air conditioner (201) in the air conditioning cooling system (2) corresponds to the sample cup (304) in the analysis device system (3), and the air conditioning protective frame (202) and the air conditioning cover (203) are arranged on the outside of the explosion-proof air conditioner (201).

4. A positive pressure explosion-proof device with online chloride ion detection function according to claim 1, characterized in that: The electrical control panel (401) in the electrical control system (4) is connected to the chloride ion analyzer (301) and is connected to the explosion-proof touch screen (403). The electrical control panel (401) is also connected to the solenoid valves in the analysis device system (3) and the pretreatment chamber (1).

5. A positive pressure explosion-proof device with online chloride ion detection function according to claim 1, characterized in that: The pneumatic triplet (502) and explosion-proof solenoid valve (503) in the explosion-proof positive pressure control system (5) are connected in sequence. The explosion-proof solenoid valve (503) is connected to the positive pressure chamber of the analysis device system and the positive pressure chamber of the electrical control system through the purge air pipe (505). The flame arrester (507) is connected to the positive pressure chamber of the analysis device system and the positive pressure chamber of the electrical control system. The explosion-proof pressure transmitter (506) is electrically connected to the positive pressure controller (501), and the positive pressure controller (501) is electrically connected to the positive pressure chamber equipment.

6. A positive pressure explosion-proof device with online chloride ion detection function according to claim 1, characterized in that: The explosion-proof solenoid valve (503) is a two-position switching type, corresponding to the ventilation throttle valve position and the operation throttle valve position respectively.

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