An online closed sampling device for jet fuel pipeline system

Abstract

The embodiment of the present application provides an online closed sampling device for a jet fuel pipeline system, which belongs to the field of fuel sampling technology. The online closed sampling device for a jet fuel pipeline system includes a sampling bottle, a distribution valve block and a connecting pipeline. The sampling bottle has an inner cavity for storing oil samples; the distribution valve block is used for the installation of the sampling bottle, and the distribution valve block is connected to the inner cavity of the sampling bottle; one end of the connecting pipeline is connected to the filter separator, and the other end is connected to the distribution valve block, and the connecting pipeline is used to allow the fuel in the filter separator to enter the sampling bottle; wherein, an air vent is provided at the top of the sampling bottle, and a micron filter is provided at the air vent to prevent external dust from entering the sampling bottle. This online closed sampling device for a jet fuel pipeline system can prevent the contamination of the oil sample by the outside air and ensure the accuracy of the oil sample detection.

Description

Technical Field

[0001] The present application relates to the technical field of fuel sampling, and in particular to an online closed sampling device for a jet fuel pipeline system. Background Art

[0002] According to aircraft refueling guarantee regulations, jet fuel needs to be visually inspected before being added to the aircraft, and the solid particle contamination level and moisture content in the jet fuel must be tested using a detector.

[0003] Since the accuracy of online detection cannot meet the actual use requirements, the current method of jet fuel detection is offline detection. The oil sample taken from the sampling bottle is taken to the oil laboratory, and the oil is tested offline using a particle contamination meter and a moisture meter to determine whether the oil quality meets the refueling requirements.

[0004] Jet fuel is the power fuel of aircraft. Its cleanliness directly affects flight safety. The cleanliness of jet fuel has strict requirements. The existing sampling and testing methods have the following two main problems: First, the sampling bottle needs to be open during the sampling process. The oil sample is easily affected by the cleanliness of the external environment. The suspended particulate impurities in the external environment will enter the sampling bottle, affecting the judgment of the quality of jet fuel; second, the oil produced by cleaning and sampling the sampling bottle needs to be discharged into the oil tank using equipment such as hand pumps, which is a large workload; third, the sampling process is all done manually, and the labor intensity is high. Summary of the invention

[0005] The embodiment of the present application provides an online closed sampling device for a jet fuel pipeline system, which can prevent the contamination of the oil sample by the outside air and ensure the accuracy of the oil sample detection.

[0006] The embodiment of the present application provides an online closed sampling device for a jet fuel pipeline system, which includes a sampling bottle, a distribution valve block and a connecting pipeline. The sampling bottle has an inner cavity for storing an oil sample; the distribution valve block is used for installing the sampling bottle, and the distribution valve block is connected to the inner cavity of the sampling bottle; one end of the connecting pipeline is connected to a filter separator, and the other end is connected to the distribution valve block, and the connecting pipeline is used to allow the fuel in the filter separator to enter the sampling bottle; wherein an air vent is provided on the top of the sampling bottle, and a micron filter is provided at the air vent to prevent external dust from entering the sampling bottle.

[0007] In this solution, through the coordination of the distribution valve block and the connecting pipeline, the connecting pipeline can enable the fuel in the filter separator to enter the sampling bottle, thereby realizing the sampling of the oil sample. And compared with the prior art in which the top of the sampling bottle needs to be opened, this solution is provided with an air vent at the bottom of the sampling bottle, and the air vent can be used for exhausting when the oil enters the sampling bottle and for air intake when the oil is discharged. And a micron filter is provided at the air vent to prevent external dust from entering the sampling bottle. The micron filter can prevent dust in the environment from entering the sampling bottle and contaminating the oil sample, thereby ensuring that the oil sample in the sampling bottle will not be contaminated by the external air, thereby ensuring the accuracy of the oil sample detection.

[0008] In some embodiments, the sampling bottle includes a bottle body and a bottle cap, the inner cavity is located in the bottle body, the air vent is arranged in the bottle cap, the bottle cap and the bottle body are detachably connected, and the bottle cap is arranged on the top of the bottle body.

[0009] In the above technical solution, the sampling bottle includes a bottle body and a bottle cap, and the bottle cap is detachably connected to the bottle body. When the bottle cap needs to be opened, the bottle cap can be opened, and the bottle cap can be opened or closed according to actual usage requirements.

[0010] In some embodiments, there are multiple air holes.

[0011] In the above technical solution, the number of air holes is set to be multiple, and the multiple air holes can meet the flow rate requirements of the air circulation of the sampling bottle. Moreover, when the multiple air holes are set, compared with one air inlet hole, under the condition of the same air flow, the aperture of each air hole can be smaller, and the probability of external impurities entering the sampling bottle is smaller.

[0012] In some embodiments, the number of connecting pipelines is three, and the three connecting pipelines are respectively a first connecting pipeline, a second connecting pipeline and a third connecting pipeline. One end of the first connecting pipeline is connected to the oil inlet end of the filter separator, one end of the second connecting pipeline is connected to the oil outlet end of the filter separator, and one end of the third connecting pipeline is connected to the dirty oil pipeline at the bottom of the filter separator; the distribution valve block has three branch channels and one main channel, and the other ends of the first connecting pipeline, the second connecting pipeline and the third connecting pipeline are respectively connected to each branch channel of the distribution valve block, and the other ends of the three branch channels are all connected to the main channel, and the main channel is connected to the sampling bottle.

[0013] In the above technical solution, three branch channels and one main channel are arranged inside the distribution valve block. The three branch channels can be connected to the first connecting pipeline, the second connecting pipeline and the third connecting pipeline respectively, so that the oil at different positions of the filter separator is transported to the sampling bottle through the distribution valve block, thereby realizing online closed sampling of oil samples at multiple positions of the filter separator.

[0014] In some embodiments, a connecting hose is provided between the main channel and the sampling bottle, and the other end of the connecting hose away from the distribution valve block extends to the side wall at the top of the sampling bottle, so that the oil sample entering the sampling bottle flows from top to bottom along the inner wall of the sampling bottle.

[0015] In the above technical solution, the other end of the connecting hose is extended to the side wall of the top of the sampling bottle, so that the oil sample entering the sampling bottle flows along the bottle wall. On the one hand, the oil sample flows from top to bottom, which facilitates the cleaning of the sampling bottle. On the other hand, the oil sample flows along the bottle wall, which can form a vortex in the sampling bottle, making it easier for the staff to observe the impurities in the oil sample.

[0016] In some embodiments, a self-sealing quick connector is provided between the connecting hose and the sampling bottle, and the self-sealing quick connector is used to detachably connect or separate the connecting hose and the sampling bottle.

[0017] In the above technical solution, a self-sealing quick connector is provided between the connecting hose and the sampling bottle, that is, a self-sealing quick connector is provided at the oil inlet of the sampling bottle, and the self-sealing quick connector is used for quick connection or loosening with the connecting hose, so as to facilitate quick assembly and disassembly of the sampling bottle and the connecting hose on the distribution valve block.

[0018] In some embodiments, a first solenoid valve, a second solenoid valve and a third solenoid valve are respectively provided on the first connecting pipeline, the second connecting pipeline and the third connecting pipeline; the online closed sampling device of the jet fuel pipeline system also includes a control box, and the first solenoid valve, the second solenoid valve and the third solenoid valve are all electrically connected to the control box, and a plurality of control buttons are correspondingly provided on the control box.

[0019] In the above technical solution, the control box is set up, and the first solenoid valve, the second solenoid valve and the third solenoid valve are all electrically connected to the control box, and the first solenoid valve, the second solenoid valve and the third solenoid valve are controlled by the control box to switch. The control box can be used to control the cleaning, sampling and oil discharge operations of the sampling bottle, with a high degree of automation, realizing the automation of the sampling process and reducing the labor intensity of personnel.

[0020] In some embodiments, the distribution valve block also includes an oil outlet channel, one end of the oil outlet channel is connected to the oil discharge port of the sampling bottle, and the other end of the oil outlet channel is connected to an oil outlet pipeline, a fourth solenoid valve is arranged on the oil outlet pipeline, the fourth solenoid valve is electrically connected to the control box, and the oil outlet pipeline is connected to the dirty oil pipeline of the filter separator.

[0021] In the above technical solution, an oil drain port is provided at the bottom of the sampling bottle, and the oil drain port can release the oil sample in the bottle to the distribution valve block, and discharge the oil sample to the dirty oil pipeline of the filter separator through the distribution valve block and the oil outlet pipeline. There is no need to manually discharge the oil sample in the sampling bottle, thereby reducing the workload of the staff.

[0022] In some embodiments, the jet fuel pipeline system online closed sampling device further includes a bracket, the bracket is fixedly connected to the filter separator, and the distribution valve block is disposed on the bracket.

[0023] In the above technical solution, the bracket is provided to support and fix the sampling bottle and the control box, and the sampling bottle, the control box and the filter separator can be connected into a whole with better integrity.

[0024] In some embodiments, the bracket includes a bracket body and an upper bracket, the bracket body is used to connect to the filter separator, the distribution valve block is arranged on the bracket body, the upper bracket is connected to the bracket body, and the upper bracket is arranged on the top of the sampling bottle; the upper bracket has a limited state and an open state compared to the bracket body, when the upper bracket is in the limited state, the upper bracket contacts the sampling bottle to limit the sampling bottle; when the upper bracket is in the separated state, the sampling bottle can be separated from the bracket body.

[0025] In the above technical solution, by dividing the bracket into a bracket body and an upper bracket, the bracket body can be used for installing the distribution valve block and the sampling bottle, and the upper bracket has a limited state and an open state compared to the bracket body. The staff can open the upper bracket above the sampling bottle according to needs, so as to facilitate the removal of the sampling bottle for cleanliness inspection and testing, that is, to facilitate visual observation and testing of the oil sample, with a wider range of applications and convenient for quick disassembly and assembly between the sampling bottle and the bracket.

[0026] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 A schematic diagram of the structure of the cooperation between the online closed sampling device of the jet fuel pipeline system and the filter separator provided in some embodiments of the present application;

[0029] Figure 2 A top view of the sampling bottle and the bracket provided in some embodiments of the present application;

[0030] Figure 3 A top view of a sampling bottle provided for some embodiments of the present application;

[0031] Figure 4A schematic diagram of the structure of the sampling bottle and the self-sealing quick connector provided in some embodiments of the present application;

[0032] Figure 5 A schematic diagram of the structure of a control box in an online closed sampling device for a jet fuel pipeline system provided in some embodiments of the present application;

[0033] Figure 6 A schematic diagram of the structure inside a distribution valve block in an online closed sampling device for a jet fuel pipeline system provided in some embodiments of the present application.

[0034] Icons: sampling bottle 1, control box 2, control button 21, distribution valve block 3, connecting hose 4, second solenoid valve 5, third solenoid valve 6, fourth solenoid valve 7, filter separator 8, oil inlet end 81, oil outlet end 82, connecting pipeline 9, first solenoid valve 10, bracket 11, upper bracket 12, micron filter 13, self-sealing quick connector 14, branch channel 15, main channel 16, oil outlet channel 17, dirty oil pipeline 18, air vent 19. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0038] In the description of the embodiments of the present application, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0039] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be fixedly connected, detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] Example

[0041] The present application embodiment provides an online closed sampling device for a jet fuel pipeline system. Figures 1 to 6 The online closed sampling device of the jet fuel pipeline system includes a sampling bottle 1, a distribution valve block 3 and a connecting pipeline 9. The sampling bottle 1 has an inner cavity for storing oil samples; the distribution valve block 3 is used for the installation of the sampling bottle 1, and the distribution valve block 3 is connected with the inner cavity of the sampling bottle 1; one end of the connecting pipeline 9 is connected with the filter separator 8, and the other end is connected with the distribution valve block 3, and the connecting pipeline 9 is used for the fuel in the filter separator 8 to enter the sampling bottle 1; wherein, the top of the sampling bottle 1 is provided with an air hole 19, and the air hole 19 is provided with a micron filter 13 for preventing external dust from entering the sampling bottle 1.

[0042] In this solution, through the cooperation of the distribution valve block 3 and the connecting pipeline 9, the connecting pipeline 9 can enable the fuel in the filter separator 8 to enter the sampling bottle 1, so as to realize the sampling of the oil sample. And compared with the prior art that the top of the sampling bottle 1 needs to be opened, this solution is provided with an air vent 19 at the bottom of the sampling bottle 1, and the air vent 19 can be used for exhausting when the oil enters the sampling bottle 1 and for air intake when the oil is discharged. And a micron filter 13 is provided at the air vent 19 to prevent external dust from entering the sampling bottle 1. The micron filter 13 can prevent dust in the environment from entering the sampling bottle 1 and contaminating the oil sample, thereby ensuring that the oil sample in the sampling bottle 1 will not be contaminated by the external air, and ensuring the accuracy of the oil sample detection.

[0043] The micron filter 13 is capable of allowing air to circulate and preventing air particles from entering the sampling bottle 1, thereby isolating the air in the external air environment from outside the sampling bottle 1. In this embodiment, the micron filter 13 is a 1 micron filter 13.

[0044] In some embodiments, the sampling bottle 1 includes a bottle body and a bottle cap, the inner cavity is located in the bottle body, the air vent 19 is provided in the bottle cap, the bottle cap is detachably connected to the bottle body, and the bottle cap is provided on the top of the bottle body. By providing the sampling bottle 1 with a bottle body and a bottle cap, the bottle cap is detachably connected to the bottle body, and when the bottle cap needs to be opened, the bottle cap can be opened, and the bottle cap can be opened or closed according to actual use requirements.

[0045] The bottle body and the bottle cap may be connected by snap-fit ​​connection, threaded connection or hinge connection, and the connection method between the bottle body and the bottle cap may be determined according to actual conditions.

[0046] In some embodiments, there are multiple air holes 19. The number of air holes 19 is set to multiple, and multiple air holes 19 can meet the flow rate requirements of air circulation in the sampling bottle 1. Moreover, when multiple air holes 19 are set, compared with one air inlet hole, under the condition of the same air flow, the aperture of each air hole 19 can be smaller, and the probability of external impurities entering the sampling bottle 1 is smaller.

[0047] Among them, multiple air holes 19 can share the same micron filter 13, that is, the micron filter 13 covers multiple air holes 19. Of course, each air hole 19 can also be provided with a micron filter 13 separately, and the specific setting method can be determined according to actual conditions. The distribution of multiple air holes 19 in the bottle cap can be an array distribution, for example, the multiple air holes 19 in the bottle cap can be distributed in a circular array.

[0048] In some embodiments, the number of connecting pipelines 9 is three, and the three connecting pipelines 9 are respectively a first connecting pipeline, a second connecting pipeline and a third connecting pipeline. One end of the first connecting pipeline is connected to the oil inlet end 81 of the filter separator 8, one end of the second connecting pipeline is connected to the oil outlet end 82 of the filter separator 8, and one end of the third connecting pipeline is connected to the dirty oil pipeline 18 at the bottom of the filter separator 8; please refer to Figure 6 The distribution valve block 3 has three branch channels 15 and one main channel 16. The other ends of the first connecting pipeline, the second connecting pipeline and the third connecting pipeline are respectively connected to the branch channels 15 of the distribution valve block 3. The other ends of the three branch channels 15 are all connected to the main channel 16. The main channel 16 is connected to the sampling bottle 1. The three branch channels 15 and one main channel 16 are arranged inside the distribution valve block 3. The three branch channels 15 can be connected to the first connecting pipeline, the second connecting pipeline and the third connecting pipeline respectively, and the oil at different positions of the filter separator 8 is transported to the sampling bottle 1 through the distribution valve block 3, so that the oil samples at multiple positions of the filter separator 8 can be sampled online in a closed manner.

[0049] In some embodiments, a connecting hose 4 is provided between the main channel 16 and the sampling bottle 1, and the other end of the connecting hose 4 away from the distribution valve block 3 extends to the side wall at the top of the sampling bottle 1, so that the oil sample entering the sampling bottle 1 flows from top to bottom along the inner wall of the sampling bottle 1. By extending the other end of the connecting hose 4 to the side wall at the top of the sampling bottle 1, the oil sample entering the sampling bottle 1 flows along the bottle wall. On the one hand, the top-down flow of the oil sample facilitates the cleaning of the sampling bottle 1. On the other hand, the oil sample flows along the bottle wall, forming a vortex in the sampling bottle 1, which facilitates the staff to observe the impurities in the oil sample.

[0050] In some embodiments, please combine Figure 1 and Figure 4 A self-sealing quick connector 14 is provided between the connecting hose 4 and the sampling bottle 1, and the self-sealing quick connector 14 is used to detachably connect or separate the connecting hose 4 and the sampling bottle 1. By providing a self-sealing quick connector 14 between the connecting hose 4 and the sampling bottle 1, that is, the sampling bottle 1 is provided with a self-sealing quick connector 14 at the oil inlet, and the self-sealing quick connector 14 is used to quickly connect or loosen with the connecting hose 4, so as to facilitate the rapid assembly and disassembly of the sampling bottle 1 and the connecting hose 4 on the distribution valve block 3.

[0051] The self-sealing quick connector 14 can be directly purchased, and the connecting hose 4 can be made of PVC. A self-sealing quick connector is provided at the port of the connecting hose 4, and the self-sealing quick connector is connected to the self-sealing quick connector 14 of the sampling bottle 1. When the self-sealing quick connector and the self-sealing quick connector 14 are disconnected, the self-sealing quick connector and the self-sealing quick connector 14 will not leak the oil sample, and the inner diameter of the connecting hose 4 is Φ6. When the staff needs to visually inspect the oil sample in the sampling bottle 1, the connecting hose 4 of the sampling bottle 1 and the distribution valve block 3 can be separated.

[0052] In some embodiments, please refer to Figure 1 , the first solenoid valve 10, the second solenoid valve 5 and the third solenoid valve 6 are respectively arranged on the first connecting pipeline, the second connecting pipeline and the third connecting pipeline; the online closed sampling device of the jet fuel pipeline system also includes a control box 2, the first solenoid valve 10, the second solenoid valve 5 and the third solenoid valve 6 are all electrically connected to the control box 2, and a plurality of control buttons 21 are correspondingly arranged on the control box 2. The control box 2 is arranged such that the first solenoid valve 10, the second solenoid valve 5 and the third solenoid valve 6 are all electrically connected to the control box 2, and the first solenoid valve 10, the second solenoid valve 5 and the third solenoid valve 6 are controlled by the control box 2 to switch. The control box 2 can be used to control the cleaning, sampling and oil discharge operations of the sampling bottle 1, with a high degree of automation, realizing the automation of the sampling process and reducing the labor intensity of personnel.

[0053] The first solenoid valve 10, the second solenoid valve 5 and the third solenoid valve 6 are used to control the release of oil in the filter separator 8, and the nominal diameter of the solenoid valve is Φ6. The multiple control buttons 21 include a cleaning button, an oil release button and multiple sampling buttons.

[0054] Before sampling, first click the cleaning button on the control box 2 to clean the sampling bottle 1, the second solenoid valve 5 opens, and the oil sample enters the sampling bottle 1 for cleaning. After cleaning, press the 1# sampling, 2# sampling, and 3# sampling buttons respectively to control the corresponding first solenoid valve 10, the second solenoid valve 5, and the third solenoid switch, and the oil sample enters the sampling bottle 1 to achieve sampling of oil samples at different positions. After the sampling operation is completed, click the drain button to drain the oil sample in the sampling bottle 1 into the dirty oil pipeline 18.

[0055] Click the cleaning button on the control box 2, the second solenoid valve 5 opens, and the sampling bottle 1 is cleaned with oil.

[0056] Click the oil drain button on the control box 2 , the fourth solenoid valve 7 opens, and the oil in the sampling bottle 1 enters the dirty oil pipeline 18 .

[0057] Click the 1# / 2# / 3# sampling button on the control box 2, the first solenoid valve 10, the second solenoid valve 5 and the third solenoid valve 6 are opened, and the oil at the corresponding position enters the sampling bottle 1. When the oil sample reaches the set position, the first solenoid valve 10, the second solenoid valve 5 and the third solenoid valve 6 are automatically closed, and the sampling bottle 1 can be removed for visual observation or testing.

[0058] Click the oil drain button on the control box 2 , the fourth solenoid valve 7 opens, and the oil in the sampling bottle 1 enters the dirty oil pipeline 18 .

[0059] In some embodiments, please refer to Figure 6 The distribution valve block 3 also includes an oil outlet channel 17, one end of which is connected to the oil outlet of the sampling bottle 1, and the other end of the oil outlet channel 17 is connected to an oil outlet pipeline, a fourth solenoid valve 7 is arranged on the oil outlet pipeline, the fourth solenoid valve 7 is electrically connected to the control box 2, and the oil outlet pipeline is connected to the dirty oil pipeline 18 of the filter separator 8. The bottom of the sampling bottle 1 is provided with an oil outlet, and the oil outlet can discharge the oil sample in the sampling bottle 1 to the distribution valve block 3, and discharge the oil sample to the dirty oil pipeline 18 of the filter separator 8 through the distribution valve block 3 and the oil outlet pipeline, so that the oil sample in the sampling bottle 1 does not need to be discharged manually, which reduces the workload of the staff.

[0060] In some embodiments, the jet fuel pipeline system online closed sampling device further includes a bracket 11, the bracket 11 is fixedly connected to the filter separator 8, and the distribution valve block 3 is arranged on the bracket 11. Through the arrangement of the bracket 11, the bracket 11 plays a supporting and fixing role for the sampling bottle 1 and the control box 2, and the sampling bottle 1, the control box 2 and the filter separator 8 can be connected as a whole, and the integrity is better.

[0061] In some embodiments, the bracket 11 includes a bracket body and an upper bracket 12, the bracket body is used to connect to the filter separator 8, the distribution valve block 3 is arranged on the bracket body, the upper bracket 12 is connected to the bracket body, and the upper bracket 12 is arranged on the top of the sampling bottle 1; the upper bracket 12 has a limited state and an open state compared to the bracket body, when the upper bracket 12 is in the limited state, the upper bracket 12 contacts with the sampling bottle 1 to limit the sampling bottle 1; when the upper bracket 12 is in the separated state, the sampling bottle 1 can be separated from the bracket body. By dividing the bracket 11 into a bracket body and an upper bracket 12, the bracket body can be used for installing the distribution valve block 3 and the sampling bottle 1. The upper bracket 12 has a limited state and an open state compared to the bracket body. The staff can open the upper bracket 12 above the sampling bottle 1 according to needs, which is convenient for removing the sampling bottle 1 for cleanliness inspection and testing, that is, it is convenient for visual observation and testing of the oil sample, and the application range is wider, which is convenient for quick disassembly and assembly between the sampling bottle 1 and the bracket 11.

[0062] It should be noted that, in the absence of conflict, the features in the embodiments of this application may be combined with each other.

[0063] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An online closed sampling device for a jet fuel pipeline system, characterized in that: include: a sampling bottle having an inner cavity for storing the oil sample; A distribution valve block, used for installing the sampling bottle, and the distribution valve block is communicated with the inner cavity of the sampling bottle; A connecting pipeline, one end of which is in communication with the filter separator, and the other end of which is in communication with the distribution valve block, wherein the connecting pipeline is used to allow the fuel in the filter separator to enter the sampling bottle; Wherein, an air hole is arranged on the top of the sampling bottle, and a micron filter is arranged at the air hole to prevent external dust from entering the sampling bottle.

2. The jet fuel pipeline system online closed sampling device according to claim 1 is characterized in that: The sampling bottle comprises a bottle body and a bottle cap, the inner cavity is located in the bottle body, the air vent is arranged in the bottle cap, the bottle cap and the bottle body are detachably connected, and the bottle cap is arranged on the top of the bottle body.

3. The jet fuel pipeline system online closed sampling device according to claim 1, characterized in that: The number of the air holes is multiple.

4. The jet fuel pipeline system online closed sampling device according to claim 1, characterized in that: The number of the connecting pipelines is three, and the three connecting pipelines are respectively a first connecting pipeline, a second connecting pipeline and a third connecting pipeline, one end of the first connecting pipeline is connected to the oil inlet end of the filter separator, one end of the second connecting pipeline is connected to the oil outlet end of the filter separator, and one end of the third connecting pipeline is connected to the dirty oil pipeline at the bottom of the filter separator; The distribution valve block has three branch channels and one main channel. The other ends of the first connecting pipeline, the second connecting pipeline and the third connecting pipeline are respectively connected to the branch channels of the distribution valve block, and the other ends of the three branch channels are all connected to the main channel, and the main channel is connected to the sampling bottle.

5. The jet fuel pipeline system online closed sampling device according to claim 4 is characterized in that: A connecting hose is provided between the main channel and the sampling bottle, and the other end of the connecting hose away from the distribution valve block extends to the side wall at the top of the sampling bottle, so that the oil sample entering the sampling bottle flows from top to bottom along the inner wall of the sampling bottle.

6. The jet fuel pipeline system online closed sampling device according to claim 5, characterized in that: A self-sealing quick connector is provided between the connecting hose and the sampling bottle, and the self-sealing quick connector is used to detachably connect or separate the connecting hose and the sampling bottle.

7. The jet fuel pipeline system online closed sampling device according to claim 4, characterized in that: The first connecting pipeline, the second connecting pipeline and the third connecting pipeline are respectively provided with a first solenoid valve, a second solenoid valve and a third solenoid valve; The jet fuel pipeline system online closed sampling device also includes a control box, the first solenoid valve, the second solenoid valve and the third solenoid valve are all electrically connected to the control box, and a plurality of control buttons are correspondingly arranged on the control box.

8. The jet fuel pipeline system online closed sampling device according to claim 7, characterized in that: The distribution valve block also includes an oil outlet channel, one end of which is connected to the oil discharge port of the sampling bottle, and the other end of the oil outlet channel is connected to an oil outlet pipeline, a fourth solenoid valve is arranged on the oil outlet pipeline, and the fourth solenoid valve is electrically connected to the control box, and the oil outlet pipeline is connected to the dirty oil pipeline of the filter separator.

9. The jet fuel pipeline system online closed sampling device according to claim 1, characterized in that: The jet fuel pipeline system online closed sampling device also includes: A bracket is fixedly connected to the filter separator, and the distribution valve block is arranged on the bracket.

10. The jet fuel pipeline system online closed sampling device according to claim 9, characterized in that: The support comprises a support body and an upper support, the support body is used to be connected with the filter separator, the distribution valve block is arranged on the support body, the upper support is connected with the support body, and the upper support is arranged on the top of the sampling bottle; Compared with the bracket body, the upper bracket has a limiting state and an open state. When the upper bracket is in the limiting state, the upper bracket contacts the sampling bottle to limit the sampling bottle; when the upper bracket is in the separation state, the sampling bottle can be separated from the bracket body.

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