Skid-mounted deaerator applied to oil platform

Abstract

The invention relates to a skid-mounted deaerator applied to an oil platform, which is characterized in that safety valves are respectively arranged on a heating steam pipeline and a steam exhaust pipeline and are used for monitoring the pressure of the heating steam pipeline and the pressure in the deaerator and providing pressure protection for the pipelines and a shell; a temperature sensor, a liquid level meter and a pressure transmitter are arranged on the deaerator body, and pressure, temperature and liquid level signals are fed back in real time when the deaerator operates; a sampling water cooler and an on-line oxygen analyzer are integrated on the water outlet pipe, so that an on-line oxygen content monitoring function is realized; a pneumatic quick-closing valve, a steam pressure reduction regulating valve and a steam pressure transmitter are integrated on the steam inlet pipeline. By reasonably optimizing the arrangement of steam, steam exhaust, water supply and water outlet pipelines and corresponding valves of the deaerator and adopting an integrated supply design, the on-site workload and construction difficulty are greatly reduced, and the overall construction efficiency is improved. The online oxygen content detection function is integrated, the oxygen content of outlet water can be monitored in real time, and the oxygen corrosion phenomenon of the boiler is prevented.

Description

Technical Field

[0001] The invention relates to a boiler feed water treatment system, in particular to a skid-mounted deaerator applied to an oil platform. Background Art

[0002] At present, in the field of boiler feed water treatment technology, in order to ensure that the feed water entering the boiler meets the oxygen content requirements and prevent boiler oxygen corrosion, deaerators are usually used to treat boiler feed water to remove oxygen and other non-condensable gases in the water. At the same time, the system needs to equip the deaerator with corresponding steam heating pipelines, exhaust pipelines, feed water outlet pipelines and independent water quality laboratories and other supporting facilities, which generally span multiple decks and multiple cabins. However, for some limited operating platforms or small space applications such as oil platforms, on-site construction is difficult. At the same time, due to the decentralized structure of the supporting facilities, the monomers are dispersed, occupying a large area, and there are many connecting pipelines, and the construction efficiency of the entire system is low.

[0003] Therefore, it is necessary to design a skid-mounted deaerator for oil platforms. By rationally optimizing the deaerator and corresponding supporting facilities and adopting integrated skid-mounted structural design technology, the steam inlet, exhaust, water supply, outlet pipelines and corresponding valves and water quality testing equipment are integrated together. The skid-mounted structural design has the characteristics of fewer connecting pipelines, compact structure and small footprint. At the same time, it can effectively reduce the amount of on-site construction, optimize the system layout and improve the overall construction efficiency of the project. Summary of the invention

[0004] In order to improve the construction efficiency of the boiler feed water treatment system of the oil platform, optimize the system layout, and reduce the system footprint and on-site construction workload, the present invention provides a skid-mounted deaerator applied to the oil platform.

[0005] To achieve the above-mentioned purpose, the technical scheme of the present invention is: a skid-mounted deaerator applied to an oil platform, comprising a pneumatic quick-closing valve, a steam pressure reducing regulating valve, a steam pressure transmitter, a safety valve, a deaerator body, an in-device temperature sensor, a liquid level gauge, a sampling water cooler, an online oxygen analyzer, an in-device pressure transmitter, a pipeline valve and a control system, wherein safety valves are respectively arranged on the heating steam pipeline and the exhaust steam pipeline, for monitoring the pressure of the heating steam pipeline and the pressure in the deaerator, and providing pressure protection for the pipeline and the shell; a temperature sensor, a liquid level gauge and a pressure transmitter are arranged on the deaerator body, and the pressure, temperature and liquid level signals when the equipment is running are fed back in real time; a sampling water cooler and an online oxygen analyzer are integrated on the outlet pipe, so as to realize the function of online monitoring of oxygen content, and effectively prevent oxygen corrosion of the boiler; a pneumatic quick-closing valve, a steam pressure reducing regulating valve and a steam pressure transmitter are integrated on the steam inlet pipeline.

[0006] Furthermore, the pneumatic quick-closing valve can quickly cut off the steam source according to the feedback signal of the steam pressure transmitter when the steam pressure reducing regulating valve and the system liquid level control fail, ensuring the safe use of the equipment;

[0007] Furthermore, the steam pressure reducing regulating valve reduces the high-pressure steam to the working pressure required for the normal operation of the deaerator according to the feedback signal of the pressure transmitter inside the device, and automatically controls the operating pressure inside the device to maintain stable operation of the system.

[0008] Furthermore, a pneumatic quick-closing valve is arranged in front of the steam pressure reducing regulating valve on the steam pipeline, so as to quickly shut off the steam when the steam pressure reducing regulating valve fails, thereby ensuring the safety of downstream equipment.

[0009] Furthermore, in the skid-mounted deaerator used in the oil platform, the pneumatic quick-closing valve, steam pressure reducing regulating valve, steam pressure transmitter, safety valve, deaerator body, internal temperature sensor, liquid level gauge, sampling water cooler, online oxygen analyzer, internal pressure transmitter, pipeline valves, pipelines, valves, instruments and operating platform are all integrated in a common framework to form a skid-mounted structure, thereby realizing the functionalization of steam inlet, exhaust, water supply, water outlet pipelines and corresponding valves and online oxygen content monitoring modules through skid-mounting.

[0010] The beneficial effects of the present invention are:

[0011] (1) By rationally optimizing the steam, exhaust, feed water, outlet water pipelines and corresponding valve arrangements of the deaerator and adopting an integrated supply design, the on-site workload and construction difficulty were greatly reduced, and the overall construction efficiency was improved.

[0012] (2) The present invention integrates an online oxygen content detection function, which can monitor the oxygen content of the outlet water in real time and prevent oxygen corrosion from occurring in the boiler.

[0013] (2) The skid-mounted structure design is compact, occupies little space, has high space utilization, is easy to install, and facilitates subsequent operation and maintenance management. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a diagram of a skid-mounted deaerator system applied to an oil platform according to the present invention;

[0015] Figure 2 It is a layout diagram of a skid-mounted deaerator applied to an oil platform of the present invention;

[0016] In the figure: 1- pneumatic quick closing valve, 2- steam pressure reducing regulating valve, 3- steam pressure transmitter, 4- safety valve 1, 5- safety valve 2, 6- deaerator body, 7- internal temperature sensor, 8- liquid level meter, 9- sampling water cooler, 10- online oxygen analyzer, 11- internal pressure transmitter. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] like Figure 1 As shown, a skid-mounted deaerator applied to an oil platform of the present invention comprises a pneumatic quick-closing valve 1, a steam pressure reducing regulating valve 2, a steam pressure transmitter 3, a safety valve 1 4, a safety valve 2 5, a deaerator body 6, an in-device temperature sensor 7, a liquid level meter 8, a sampling water cooler 9, an online oxygen analyzer 10, an in-device pressure transmitter 11, pipeline valves and a control system. The skid-mounted structure integrates steam inlet, exhaust, water supply, water outlet pipelines and corresponding valves and online oxygen content monitoring functions, and optimizes the conventional dispersed layout across multiple decks and multiple cabins, and integrates them into a skid, thereby optimizing the system layout.

[0019] like Figure 1 As shown, the steam inlet pipeline is integrated with a pneumatic quick-closing valve 1, a steam pressure reducing regulating valve 2 and a steam pressure transmitter 3. The pneumatic quick-closing valve 1 can quickly cut off the steam source according to the feedback signal 3 of the steam pressure transmitter when the steam pressure reducing regulating valve 2 and the system liquid level control fail, ensuring the safe use of the equipment; the steam pressure reducing regulating valve 2 reduces the high-pressure steam to the working pressure required for the normal operation of the deaerator according to the feedback signal of the pressure transmitter 11 in the device, and automatically controls the operating pressure in the device to keep the system stable. Safety valve 1 4 and safety valve 2 5 are integrated on the exhaust pipeline to provide overpressure protection for the pipeline and the body. The deaerator body 6 is provided with an in-device temperature sensor 7, a liquid level gauge 8 and an in-device pressure transmitter 11, which can provide real-time feedback of the pressure, temperature and liquid level signals when the equipment is running. The sampling water cooler 9 and the online oxygen analyzer 10 are integrated on the water supply outlet pipe, which can monitor the oxygen content of the outlet water online in real time and give sound and light alarms, effectively preventing oxygen corrosion from occurring in the boiler.

[0020] A steam pressure reducing regulating valve 2 is installed on the steam pipeline to directly reduce the steam pressure from the maximum 21MPa to 0.085MPa. A pneumatic quick-closing valve 1 is installed in front of the pressure reducing valve to quickly close the steam when the pressure reducing valve fails, thereby ensuring the safety of downstream equipment.

[0021] like Figure 2 As shown in the figure, all the equipment, pipelines, valves, instruments and operating platforms of the skid are installed in a common frame, which has a compact structure, small footprint, easy installation, simple pipelines and convenient later operation and maintenance management. It should be added that the platform space is limited and the equipment is arranged in large quantities. The skid structure realizes modular functionality, equipment intensiveness and simple operation; the platform equipment is highly concentrated, and the on-site pipeline construction space is small. The skid structure greatly reduces the on-site construction volume of the entire system and optimizes the layout of pipelines, valves and instruments.

Claims

1. A skid-mounted deaerator used in an oil platform, characterized in that: It includes a pneumatic quick-closing valve, a steam pressure reducing regulating valve, a steam pressure transmitter, a safety valve, a deaerator body, an in-device temperature sensor, a liquid level gauge, a sampling water cooler, an online oxygen analyzer, an in-device pressure transmitter, a pipeline valve and a control system. Safety valves are respectively provided on the heating steam pipeline and the exhaust pipeline to monitor the pressure of the heating steam pipeline and the pressure in the deaerator, and provide pressure protection for the pipeline and the shell; the deaerator body is provided with a temperature sensor, a liquid level gauge and a pressure transmitter to provide real-time feedback of the pressure, temperature and liquid level signals during the operation of the equipment; the sampling water cooler and the online oxygen analyzer are integrated on the outlet pipe to realize the online monitoring of the oxygen content, which can effectively prevent oxygen corrosion in the boiler; the steam inlet pipeline is integrated with a pneumatic quick-closing valve, a steam pressure reducing regulating valve and a steam pressure transmitter.

2. The skid-mounted deaerator for use on a petroleum platform according to claim 1, characterized in that: The pneumatic quick-closing valve can quickly cut off the steam source according to the feedback signal of the steam pressure transmitter when the steam pressure reducing regulating valve and the system liquid level control fail, ensuring the safe use of the equipment.

3. The skid-mounted deaerator for use on a petroleum platform according to claim 1, characterized in that: The steam pressure reducing regulating valve reduces the high-pressure steam to the working pressure required for the normal operation of the deaerator according to the feedback signal of the pressure transmitter inside the device, and automatically controls the operating pressure inside the device to maintain stable system operation.

4. The skid-mounted deaerator for use on a petroleum platform according to claim 1, characterized in that: The pneumatic quick-closing valve configured in front of the steam pressure reducing regulating valve on the steam pipeline is used to quickly close the steam when the steam pressure reducing regulating valve fails, ensuring the safety of downstream equipment.

5. The skid-mounted deaerator for use on a petroleum platform according to any one of claims 1 to 4, characterized in that: In the skid-mounted deaerator used in oil platforms, pneumatic quick-closing valves, steam pressure reducing regulating valves, steam pressure transmitters, safety valves, deaerator bodies, in-device temperature sensors, liquid level gauges, sampling water coolers, online oxygen analyzers, in-device pressure transmitters, pipeline valves, pipelines, valves, instruments and operating platforms are integrated in a common framework to form a skid-mounted structure, thereby realizing the functionalization of steam inlet, exhaust, water supply, water outlet pipelines and corresponding valves and online oxygen content monitoring modules through skid-mounting.

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