Steam blowing device of steam turbine of cargo oil pump of oil tanker

Abstract

The utility model relates to a steam blowing device of a steam turbine of a cargo oil pump of an oil tanker, which comprises a steam source, a main steam pipeline, a turbine set and a blowing pipeline assembly, the turbine set comprises a plurality of cargo oil turbines, and each cargo oil turbine is provided with a turbine steam pipeline; a steam source is connected into a main steam pipeline, and the main steam pipeline passes through a steam-water separator and then is divided into multiple paths to be connected with turbine steam pipelines on the cargo oil turbines respectively. The purging pipeline assembly comprises a purging header pipe and a plurality of purging branch pipes, the purging branch pipes correspond to turbine steam pipelines one to one, one end of each purging branch pipe is connected to the corresponding turbine steam pipeline through a quick release flange, and the other end of each purging branch pipe is communicated with the purging header pipe; the tail end of the purging header pipe is connected with one end of a metal hose, and the other end of the metal hose extends to an outboard discharge outlet. By means of the quick-release flange, the double-layer corrugated pipe and the intelligent detection system, efficient cleaning and accurate control of the steam pipeline are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to ship power system technical field especially, it relates to a steam purging device of oil tanker cargo oil pump steam turbine, be used for the steam pipeline impurity removal device of the steam turbine of the cargo oil pump of the AFRAMAX oil tanker. BACKGROUND

[0002] In the AFRAMAX oil tanker, cargo oil pump steam turbine is 16 kg steam drive, needs to carry out purging to the import steam pipe of cargo oil pump steam turbine before debugging to remove welding residual, rust particle and other impurities. The prior art mainly has the following problems:

[0003] (1) temporary connection structure defect: adopt the direct purging of boiler steam (16 kg pressure), need to disconnect steam pipe and connect temporary hose to the outside of the side, and the operation is complicated and there is steam leakage risk, and it is easy to cause the moisture damage of engine room equipment;

[0004] (2) detection means is backward: after purging, the impurity residual is checked through aluminum plate vision, and the sensitivity is low (only detects >=0.5 mm particle), and the cleanliness cannot be quantified;

[0005] (3) lack of automation: purging process relies on manual operation, and the efficiency is low and there is security risk.

[0006] Therefore, the applicant proposes a steam purging device of oil tanker cargo oil pump steam turbine to realize efficient cleaning, accurate detection and automatic operation of steam pipeline. SUMMARY

[0007] The utility model discloses a steam purging device of oil tanker cargo oil pump steam turbine, which overcomes the above-mentioned deficiencies, realizes efficient and safe steam pipeline cleaning through modular purging structure and intelligent detection technology.

[0008] The utility model discloses a steam purging device of oil tanker cargo oil pump steam turbine, which overcomes the above-mentioned deficiencies, realizes efficient and safe steam pipeline cleaning through modular purging structure and intelligent detection technology.

[0009] A steam purging device of oil tanker cargo oil pump steam turbine, comprising a steam source, a main steam pipeline, a turbine unit and a purging pipeline assembly, the turbine unit comprises a plurality of cargo oil turbines, and a turbine steam pipeline is arranged on each cargo oil turbine.

[0010] The purging pipeline assembly comprises a purging main pipe and a plurality of purging branch pipes, the purging branch pipes correspond to the turbine steam pipelines one by one, one end of each purging branch pipe is connected to the corresponding turbine steam pipeline through a quick-release flange, the other end is connected to the purging main pipe through a quick-release flange, and the purging main pipe is connected to the turbine steam pipelines through the quick-release flanges;

[0011] The turbine steam pipelines are respectively provided with the in-line particle detectors with built-in laser scattering sensors, and the particle concentration is monitored in real time.

[0012] Further, the steam source adopts high-pressure steam of 1.6 Mpa.

[0013] Further, the quick-release flange is provided with a self-locking buckle and a high-temperature-resistant sealing ring, and the quick-release flange is quickly separated by rotating 90 degrees when being disconnected.

[0014] Further, the surface of the quick-release flange is coated with a titanium nitride coating, and the temperature resistance is greater than or equal to 400 DEG C, so that the service life is prolonged.

[0015] Further, the purging main pipe and the purging branch pipes are double-layer corrugated stainless steel hoses, the outer layer is covered with a high-temperature-resistant silica gel sheath, and the inner layer has a same diameter as the turbine steam pipelines.

[0016] Further, the inner wall of the purging main pipe and the purging branch pipes is coated with a polytetrafluoroethylene layer, so that the frictional resistance is reduced.

[0017] Further, the outlet of the steam source is provided with an electric regulating valve, and the steam pressure and the purging time are controlled by PLC.

[0018] Further, the outlet of the metal hose is provided with a condensation recovery device.

[0019] Compared with the prior art, the steam purging device for the steam turbine of the oil cargo pump of the oil tanker has the following advantages:

[0020] The steam purging device for the steam turbine of the oil cargo pump of the oil tanker has the following advantages:

[0021] (1) high efficiency and safety:

[0022] The quick-release flange realizes disconnection / connection of the pipeline within 5 seconds, and the operation efficiency is improved by 80%;

[0023] Double-layer bellows pressure resistance ≥ 20kg, silica gel sheath insulation high temperature steam leakage, to avoid damage to the cabin equipment.

[0024] (2) Precise detection:

[0025] Laser particle detector sensitivity is greatly improved than traditional aluminum plate method, can detect 0.1 μm particles;

[0026] PLC automatically determines cleanliness, reduces the risk of manual misjudgment.

[0027] (3) Environmental protection and energy saving:

[0028] Condensate recovery device recovers 90% of steam condensate, recycling reduces energy consumption;

[0029] Silencer makes noise below 75dB, in line with IMO ship noise standards. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is the steam pipeline purging schematic diagram of the steam turbine of the utility model.

[0031] Figure 2 It is the connection schematic diagram of the No.

[0032] Among them:

[0033] Steam source 1, main steam pipeline 2, steam-water separator 3, No. 1 cargo oil turbine 4, No. 1 turbine steam pipeline 4.1, No. 2 cargo oil turbine 5, No. 2 turbine steam pipeline 5.1, No. 3 cargo oil turbine 6, No. 3 turbine steam pipeline 6.1, purging pipeline assembly 7, purging main pipe 7.1, No. 1 purging branch pipe 7.2, No. 2 purging branch pipe 7.3, No. 3 purging branch pipe 7.4, metal hose 8, quick release flange 9. DETAILED DESCRIPTION

[0034] In order to better understand the technical scheme of the utility model, the following will be combined with relevant drawings to make detailed description. It should be understood that the following specific examples are not used to limit the specific implementation of the technical scheme of the utility model, and they are only implementation of the technical scheme of the utility model. It should be pointed out that the expression of the position relationship of each component in this paper, such as A component is located above B component, is based on the expression of the relative position of each component in the drawing, and is not used to limit the actual position relationship of each component. Example 1

[0035] Referring to Figures 1-2 , Figure 1The structure diagram of the steam purging device of the steam turbine of the cargo oil pump of the tanker of the embodiment 1 is drawn. As shown in the figure, the steam purging device of the steam turbine of the cargo oil pump of the tanker of the embodiment 1 comprises a steam source 1, a main steam pipeline 2, a turbine set and a purging pipeline assembly 7, the turbine set comprises a No. 1 cargo oil turbine 4, a No. 2 cargo oil turbine 5 and a No. 3 cargo oil turbine 6, the No. 1 cargo oil turbine 4 is provided with a No. 1 turbine steam pipeline 4.1, the No. 2 cargo oil turbine 5 is provided with a No. 2 turbine steam pipeline 5.1, and the No. 3 cargo oil turbine 6 is provided with a No. 3 turbine steam pipeline 6.1;

[0036] The steam source 1 adopts high-pressure steam of 1.6 Mpa, the steam source 1 is connected to the main steam pipeline 2, and the main steam pipeline 2 is connected to the No. 1 turbine steam pipeline 4.1, the No. 2 turbine steam pipeline 5.1 and the No. 3 turbine steam pipeline 6.1 through a steam-water separator 3.

[0037] The purging pipeline assembly 7 comprises a purging main pipeline 7.1, a No. 1 purging branch pipeline 7.2, a No. 2 purging branch pipeline 7.3 and a No. 3 purging branch pipeline 7.4, one end of the No. 1 purging branch pipeline 7.2 is connected to the No. 1 turbine steam pipeline 4.1 through a quick-release flange 9, the other end is connected to the purging main pipeline 7.1 through the quick-release flange 9, one end of the No. 2 purging branch pipeline 7.3 is connected to the No. 2 turbine steam pipeline 5.1 through the quick-release flange 9, the other end is connected to the side wall of the purging main pipeline 7.1 through the quick-release flange 9 and communicates with the purging main pipeline 7.1, one end of the No. 3 purging branch pipeline 7.4 is connected to the No. 3 turbine steam pipeline 6.1 through the quick-release flange 9, the other end is connected to the side wall of the purging main pipeline 7.1 through the quick-release flange 9 and communicates with the purging main pipeline 7.1;

[0038] The purging main pipeline 7.1 is connected to the No. 1 purging branch pipeline 7.2, the No. 2 purging branch pipeline 7.3 and the No. 3 purging branch pipeline 7.4 through the butt joint matched with the quick-release flange 9, one end of the purging main pipeline 7.1 is connected to one end of a metal hose 8, the other end of the metal hose 8 extends to an overboard discharge port.

[0039] The discharge port of the metal hose 8 is provided with a condensate recovery device.

[0040] The quick-release flange 9 is embedded with a self-locking buckle and a high-temperature-resistant sealing ring, and is quickly separated by rotating 90° when disconnected; the surface of the quick-release flange 9 is coated with a titanium nitride coating, the temperature resistance is ≥400℃, and the service life is prolonged.

[0041] The purge main pipe 7.1, the No. 1 purge branch pipe 7.2, the No. 2 purge branch pipe 7.3 and the No. 3 purge branch pipe 7.4 are double-layer corrugated stainless steel hoses, the outer layer is coated with a high-temperature-resistant silica gel sheath, and the inner layer has a passage diameter consistent with each turbine steam pipeline (DN80); the inner walls of the purge main pipe 7.1, the No. 1 purge branch pipe 7.2, the No. 2 purge branch pipe 7.3 and the No. 3 purge branch pipe 7.4 are coated with a polytetrafluoroethylene layer to reduce frictional resistance.

[0042] An online particle detector is mounted at the outlet of each of the No. 1 turbine steam pipeline 4.1, the No. 2 turbine steam pipeline 5.1 and the No. 3 turbine steam pipeline 6.1, and is provided with a built-in laser scattering sensor to monitor the concentration of particulate matter in real time (detection resolution 0.1 μm); the detector data of the online particle detector is connected to a PLC control unit, and a cleaning threshold (such as a particle concentration ≤ 5 ppm) is set, and the purge is automatically terminated when the threshold is reached.

[0043] The online particle detector is integrated with a wireless transmission module to support remote monitoring.

[0044] An electric regulating valve is arranged at the outlet of the steam source 1, and the steam pressure (14-16 kg adjustable) and the purge duration are controlled by the PLC.

[0045] The outboard discharge port to which the metal hose 8 leads is provided with a silencer, and the noise is ≤ 75 dB.

[0046] The silencer and the condensation recovery device reduce noise and the pollution of steam condensate water to the environment.

[0047] Working principle:

[0048] The utility model provides a kind of steam blowing device of oil tanker cargo oil pump steam turbine, and the blowing process is as follows:

[0049] Preparation phase: rotate quick-release flange 90 ° to disconnect the steam pipeline of each turbine, respectively connect each purge branch pipe, each purge branch pipe is connected to purge main pipe, and purge main pipe is connected to outboard discharge port by metal hose;

[0050] Parameter setting: set steam pressure (16 kg), purge duration (10 min) and particle concentration threshold (5 ppm) by PLC;

[0051] Purge execution: open electric regulating valve, steam flows through turbine set steam pipeline, purge branch pipe and purge main pipe in turn, and particle detector feeds back data in real time;

[0052] Automatic termination: when particle concentration ≤ 5 ppm, PLC closes regulating valve and prompts completion;

[0053] Recovery reset: disassemble purge branch pipe and purge main pipe, reset quick-release flange, and recover condensate water to boiler system.

[0054] The above is only a specific application example of the present application, and does not constitute any limitation on the protection scope of the present application. Any technical solution formed by equivalent transformation or equivalent replacement falls within the protection scope of the present application.

Claims

1. A steam purging apparatus for a steam turbine of a tanker cargo oil pump, characterized by: It comprises a steam source (1), a main steam pipeline (2), a turbine unit and a purge pipeline assembly (7), the turbine unit comprises a plurality of cargo oil turbines, each of which is provided with a turbine steam pipeline; the steam source (1) is connected to the main steam pipeline (2), and the main steam pipeline (2) is connected to the turbine steam pipelines of each cargo oil turbine through a steam-water separator (3); The purge pipeline assembly (7) comprises a purge main pipe (7.1) and a plurality of purge branch pipes, the purge branch pipes correspond to the turbine steam pipelines one by one, one end of each purge branch pipe is connected to the corresponding turbine steam pipeline through a quick-release flange (9), and the other end is connected to the purge main pipe (7.1) through a quick-release flange (9) and communicates with the purge main pipe (7.1); the purge main pipe (7.1) is connected to each purge branch pipe through a butt joint matched with the quick-release flange (9), one end of a metal hose (8) is connected to the end of the purge main pipe (7.1), and the other end of the metal hose (8) extends to an overboard discharge port; An inner particle detector is arranged at the outlet of the turbine steam pipeline, and a built-in laser scattering sensor is arranged therein to monitor the concentration of particulate matter in real time.

2. A steam purging device for a steam turbine of a tanker cargo pump steam turbine according to claim 1, characterized in that: The steam source (1) adopts high-pressure steam of 1.6 MPa.

3. A steam purging device for a steam turbine of a tanker cargo pump steam turbine according to claim 1, characterized in that: The quick-release flange (9) is embedded with a self-locking buckle and a high-temperature-resistant sealing ring, and is quickly separated by rotating 90° when disconnected.

4. A steam purging device for a steam turbine of a tanker cargo pump steam turbine according to claim 1, characterized in that: The surface of the quick-release flange (9) is coated with a titanium nitride coating, which can resist temperatures of ≥400℃ and prolong the service life.

5. A steam purging device for a steam turbine of a tanker cargo pump steam turbine according to claim 1, characterized in that: The purge main pipe (7.1) and each purge branch pipe are double-layer corrugated stainless steel hoses, the outer layer of which is coated with a high-temperature-resistant silica gel sheath, and the inner layer has a passage diameter consistent with that of each turbine steam pipeline.

6. A steam purging device for a steam turbine of a tanker cargo pump steam turbine according to claim 1, characterized in that: The inner walls of the purge main pipe (7.1) and each purge branch pipe are coated with a polytetrafluoroethylene layer to reduce frictional resistance.

7. A steam purging device for a steam turbine of a tanker cargo pump steam turbine according to claim 1, characterized in that: An electric regulating valve is arranged at the outlet of the steam source (1) to control the steam pressure and the purge time through PLC.

8. A steam purging device for a steam turbine of a tanker cargo pump steam turbine according to claim 1, characterized in that: The discharge port of the metal hose (8) is provided with a condensate recovery device.

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