Tank car unloading device and tank car system

Abstract

The utility model discloses a tank truck unloading device and a tank truck system, the tank truck unloading device is used for discharging liquid stored in a tank truck to a receiving tank body, the tank truck is provided with a liquid outlet, and the tank truck unloading device comprises a first valve, a second valve, a third valve and a fourth valve, one end of the second valve is communicated with the other end of the first valve, and the other end of the second valve is used for allowing sampled liquid to flow out; one end of the first pipeline is communicated with the other end of the first valve, and the other end of the first pipeline is communicated with the receiving tank body. According to the embodiment of the utility model, the second valve is additionally arranged, so that an operator can conveniently sample liquid in the unloading process, the problem of difficulty in sampling is solved, and the quality of the liquid is further ensured to meet the requirement; in addition, an operator can directly sample through the second valve, so that the sampling process is simplified, and the operation difficulty is also reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to unloading device technical field, especially a kind of tank car unloading device and tank car system. BACKGROUND

[0002] As Figure 1 As shown in the prior art, generally using tank car 1 transports liquid goods (such as hydrochloric acid, sodium hydroxide, ferric chloride, sodium hypochlorite, various oil liquid reagents), before unloading, liquid sampling analysis is needed to ensure that the relevant parameters of goods (such as concentration, purity, etc.) meet the requirements. A kind of existing sampling mode is to open valve 4 first, sampling from the port of hose 2, then hose 2 is connected to the pipeline of receiving tank body 3 to carry out normal unloading. However, since the diameter of hose 2 is relatively thick, and sampling needs to be representative, part of the liquid of tank car 1 must flow out, which not only causes waste, but also produces a large amount of mist when the goods are volatile liquids such as hydrochloric acid, which has a high safety risk. Another existing sampling method is to sample from the manhole at the top of tank car 1, but the operator needs to wear protective equipment, carry a safety belt, and climb to the top of the tank to sample, which has the risk of carrying and climbing, and may directly contact the liquid, which is complex and dangerous. SUMMARY

[0003] The utility model aims to provide a kind of tank car unloading device and tank car system, to solve the problems of existing tank car sampling difficulty and complex operation when sampling liquid.

[0004] The utility model provides a kind of tank car unloading device, for the liquid stored in tank car is discharged to receiving tank body, the tank car is provided with liquid outlet, the tank car unloading device includes:

[0005] First valve, one end of the first valve is communicated with the liquid outlet;

[0006] Second valve, one end of the second valve is communicated with the other end of the first valve, and the other end of the second valve is used for the liquid sampled to flow out;

[0007] First pipeline, one end of the first pipeline is communicated with the other end of the first valve, and the other end of the first pipeline is communicated with the receiving tank body.

[0008] Optionally, it further includes third valve, one end of the third valve is communicated with the other end of the first valve, and the other end of the third valve is used for gas to be discharged or gas to enter.

[0009] Optionally, a fourth valve is further included, one end of the fourth valve is coupled in communication with one end of the second valve from the other end of the first valve, and the other end of the fourth valve is in communication with one end of the first pipeline.

[0010] Optionally, a second pipeline and a fifth valve are further included, the upper portion of the tank truck is provided with an air inlet, one end of the second pipeline is connected with the air inlet, the other end of the second pipeline extends to the lower portion of the tank truck, and the fifth valve is arranged at the other end of the second pipeline.

[0011] Optionally, the first pipeline and the second pipeline are hoses.

[0012] Optionally, the first pipeline and the second pipeline are made of corrosion-resistant materials.

[0013] Optionally, the first valve, the second valve, the third valve and the fourth valve are one of a manual valve or an electric valve.

[0014] The utility model also provides a tank truck system, including tank truck and the tank truck unloading device of any one of the above.

[0015] The utility model discloses a tank truck unloading device for discharging liquid stored in a tank truck to a receiving tank. In the embodiment of the utility model, the main function of the second valve is to facilitate the operator to sample the liquid during unloading. By adding the second valve, the problem of difficult sampling is solved, further ensuring that the quality of the liquid meets the requirements. At the same time, a large amount of liquid will not flow out during sampling, avoiding unnecessary waste. In addition, the setting of the second valve avoids direct contact of the operator with a large amount of liquid or acid mist, reducing the risk of chemical exposure. At the same time, the operator does not need to sample from the port of the first pipeline or climb to the manhole at the top of the tank truck to sample, but can directly sample through the second valve. This way simplifies the sampling process, reduces the operation difficulty and completely eliminates the risk of falling from a high altitude. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0017] Figure 1 It is a structural schematic view of the tank truck system in the prior art.

[0018] Figure 2 It is a structural schematic view of the tank truck system provided by the utility model.

[0019] Explanation of the figures:

[0020] Prior art: 1, tank truck; 2, hose; 3, receiving tank; 4, valve; 5, tank top air inlet valve;

[0021] In the utility model: 10, tank truck unloading device; 100, first valve; 101, second valve; 102, first pipeline; 103, third valve; 104, fourth valve; 105, second pipeline; 106, fifth valve; 20, tank truck; 200, liquid outlet; 30, receiving tank. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] It should be understood that when used in the specification and the appended claims, the terms "comprise" and "include" indicate the presence of described features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0024] It should also be understood that the terms used in the utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in the utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0025] It should be further understood that the term "and / or" used in the utility model specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0026] Please refer to Figure 2The utility model embodiment provides a tank car unloading device 10 for discharging liquid stored in a tank car 20 to a receiving tank 30, the tank car 20 is provided with a liquid outlet 200, the tank car unloading device 10 includes: a first valve 100, one end of the first valve 100 is communicated with the liquid outlet 200, a second valve 101, one end of the second valve 101 is communicated with the other end of the first valve 100, the other end of the second valve 101 is used for the liquid sample to flow out, a first pipeline 102, one end of the first pipeline 102 is communicated with the other end of the first valve 100, the other end of the first pipeline 102 is communicated with the receiving tank 30.

[0027] In the embodiment, the main role of the second valve 101 is to facilitate the operator to sample the liquid during unloading, and the problem of difficult sampling is solved by adding the second valve 101, which further ensures that the liquid quality meets the requirements, and at the same time, a large amount of liquid will not flow out during sampling, avoiding unnecessary waste; in addition, the setting of the second valve 101 avoids the operator directly contacting a large amount of liquid or acid mist, reducing the risk of chemical exposure. At the same time, the operator does not need to sample from the port of the first pipeline 102, nor does he need to climb to the manhole at the top of the tank car 20 to sample, but can directly sample through the second valve 101, which simplifies the sampling process and reduces the operation difficulty, and completely eliminates the risk of falling from a high altitude.

[0028] In a specific embodiment, the liquid in the tank car 20 enters the first valve 100 through the liquid outlet 200, and is then discharged to the receiving tank 30 through the first pipeline 102. When sampling, the liquid flows out through the second valve 101.

[0029] Further, the tank car unloading device 10 further includes a third valve 103, one end of the third valve 103 is communicated with the other end of the first valve 100, and the other end of the third valve 103 is used for discharging gas. As shown in the prior art, Figure 1 After the hose 2 is connected to the receiving tank 3, the liquid is generally pumped into the receiving tank 3 by the user's receiving pump, but when the hose 2 is connected to the pipeline of the receiving tank 3, there is air in the hose 2, which is difficult to discharge and accumulates at the inlet of the pump, causing the receiving pump to be unable to provide sufficient power to discharge the liquid to the receiving tank 3. At this time, the hose 2 needs to be manually lifted to gradually drive the gas into the tank car 1, which is a cumbersome and time-consuming operation.

[0030] Therefore, in the embodiment, the third valve 103 is provided to discharge the gas in the first pipeline 102, thereby balancing the pressure inside and outside the tank car 20 and ensuring that the liquid can flow smoothly to the receiving tank 30.

[0031] In a specific embodiment, when the user unloads, the first pipe 102 is connected to the pipe connected to the receiving tank 30 (that is, the user unloading pipe), the third valve 103 is closed, the first valve 100 is opened, the liquid in the tank truck 20 flows to the first pipe 102, the second valve 101 is opened after the reagent is taken out and then closed, the user unloading pipe is connected after the first valve 100 is closed, and the third valve 103 is opened. At this time, the gas in the first pipe 102 can be quickly discharged through the third valve 103. By adding the third valve 103, the problem that the inlet of the first pipe 102 cannot provide sufficient power to extract the liquid due to the presence of gas is effectively solved, and the pressure in the tank truck 20 is balanced, avoiding the situation that the liquid cannot be discharged smoothly, and improving the unloading efficiency. At the same time, it avoids the safety hazards caused by pressure imbalance and improves the safety of operation.

[0032] When the reagent of the tank truck needs to be unloaded in multiple places, the traditional method has the problems of reagent waste and high risk of injury. Specifically, when unloading in a certain place is finished, the hose 2 needs to be removed, but because there is still residual reagent in the hose 2 (because the hose 2 is thick and long, the residual amount is large), and there is still reagent in the tank truck 1, the usual operation is to first close the valve 4, and then disconnect the connection between the valve 4 and the hose 2. At this time, the hose 2 needs to be manually lifted to restart the receiving pump of the receiving tank 3 for extraction, but this process is risky, so in most cases, the hose 2 will be directly removed, and the reagent in the hose 2 will be completely discharged, which will cause waste. In addition, when the reagent in the hose 2 is emptied, the end of the hose 2 may splash reagent, further increasing the risk of injury.

[0033] To solve the above problems, based on the setting of the third valve 103, an improved operation step is proposed: when unloading in a certain place is finished, first open the isolation valve (connected to the receiving tank 30) to connect the user unloading pipe and the first pipe 102, then close the first valve 100 to disconnect the tank truck 20, then open the third valve 103 to intake air, start the receiving pump of the receiving tank 30, and basically extract the reagent in the first pipe 102. Then, the receiving pump stops working, the isolation valve is closed, and the connection between the isolation valve and the first pipe 102 is disconnected, at which time a small amount of residual reagent will be emptied. Finally, the third valve 103 is closed, and the connection between the first pipe 102 and the tank truck 20 is disconnected. This method not only avoids waste of reagent, but also avoids the risk of injury caused by the first pipe 102 splashing reagent, solves the problem of stopping unloading reagent, and solves the problem of waste and risk caused by pausing unloading when unloading in multiple places.

[0034] Further, the tank truck unloading device 10 further comprises a fourth valve 104, one end of the fourth valve 104 is coupled in communication with one end of the second valve 101 and the other end of the first valve 100, and the other end of the fourth valve 104 is in communication with one end of the first pipeline 102.

[0035] In the present embodiment, during unloading, the first pipeline 102 is connected to the pipeline connecting the tank truck 20 and the receiving tank 30 (i.e., the user unloading pipeline), the third valve 103 is closed, the first valve 100 and the fourth valve 104 are opened, and the reagent in the tank truck 20 flows to the first pipeline 102, so that the reagent for subsequent sampling is representative. Then, the second valve 101 is opened for sampling, and the pipeline connected between the second valve 101 and the first valve 100 is shorter than the first pipeline 102, so that the reagent is not wasted and the high-risk hazardous chemicals are not discharged in large quantities, thereby reducing the risk; and the reagent sampled from the second valve 101 is more representative, which can solve the sampling difficulty.

[0036] In order to further optimize the sampling operation, the fourth valve 104 is added between the second valve 101 and the first valve 100 and is in communication with the first pipeline 102, so that the sampling operation can be realized without affecting the normal unloading. Specifically, when sampling is needed, the fourth valve 104 is opened, and the liquid flows out through the second valve 101, thereby avoiding the problems of liquid waste and safety risk caused by sampling from the first pipeline 102. At the same time, a smaller risk sampling mode can also be realized. Specifically, the first valve 100 and the fourth valve 104 are closed, the third valve 103 is opened for air intake, and then the second valve 101 is opened, so that sampling can also be realized in the disconnected state of the tank truck 20 and the receiving tank 30.

[0037] In addition, the addition of the fourth valve 104 can also improve the safety of unloading, so that there are two safeguards at the outlet of the tank truck 20, one is the safety safeguard brought by the fourth valve 104, and the other is the safety safeguard brought by the isolation valve of the receiving tank 30, which solves the internal leakage problem caused by frequent liquid sampling operation of the first valve 100.

[0038] Further, the tank truck unloading device 10 further comprises a second pipeline 105 and a fifth valve 106, the upper part of the tank truck 20 is provided with an air inlet, one end of the second pipeline 105 is connected with the air inlet, the other end of the second pipeline 105 extends to the lower part of the tank truck 20, and the fifth valve 106 is arranged at the other end of the second pipeline 105. As Figure 1As shown, before the pipeline connection of the hose 2 with the receiving tank body 3 is completed and the tank is ready for unloading, the tank top air inlet valve 5 needs to be opened. However, opening this valve involves high-altitude work, which requires the operator to climb while wearing a safety belt. Because there is no place to hang the safety belt on the upper part of the tank truck 1, this high-altitude work is different from other climbing work, which actually increases the risk of falling from a high altitude. The current practice is to require the manufacturer to open the tank top air inlet valve 5 before entering the nuclear power plant, but this will lead to the risk of reagent overflow during transportation. Even if there is no overflow, volatile reagents such as hydrochloric acid will generate a large amount of mist, significantly increasing the risk of open transportation.

[0039] To solve the above problems, the second pipeline 105 is used to guide the original tank top air inlet valve 5 to a low position of the tank truck 20, that is, the function of the original tank top air inlet valve 5 is replaced by the fifth valve 106, which is convenient for personnel operation. The operator only needs to open the fifth valve 106 to realize air inlet, which not only eliminates the risk of carrying and climbing from a high altitude, but also avoids the risk of overflow caused by open transportation.

[0040] Specifically, the first pipeline 102 and the second pipeline 105 are hoses. In this embodiment, the hose has flexibility, which can be conveniently connected and operated to adapt to different unloading and sampling requirements. This design not only improves the flexibility and convenience of operation, but also further reduces the safety risk in the operation process. By using a hose, the position of the pipeline can be adjusted more easily, avoiding the difficulty of installation or inconvenience of operation caused by the rigidity of the pipeline, thereby improving the overall operation efficiency and safety. Preferably, quick connection joints can be provided at both ends of the hose to facilitate connection and disconnection with the tank truck 20 and the receiving tank body 30, and also facilitate connection and disconnection of one end of the second pipeline 105 with the air inlet.

[0041] Specifically, the materials of the first pipeline 102 and the second pipeline 105 are corrosion-resistant materials. In this embodiment, the materials of the first pipeline 102 and the second pipeline 105 are selected to be corrosion-resistant materials, which can effectively prevent the corrosion of the pipeline by liquid, prolong the service life of the pipeline, and ensure the safety and reliability of the tank truck 20 during transportation and unloading. Especially when transporting and unloading corrosive liquids (such as hydrochloric acid, sodium hydroxide, etc.), the use of corrosion-resistant materials is particularly important. The selection of corrosion-resistant materials can be various, for example, common corrosion-resistant materials include polytetrafluoroethylene (PTFE), fluororubber, etc. These materials have excellent corrosion resistance and can be used in strong acid, strong base and other corrosive environments for a long time without being damaged.

[0042] It should be noted that the liquid transported by the tank truck 20 is not limited to hydrochloric acid, sodium hydroxide, sodium hypochlorite and other dangerous chemicals, but also applies to all liquid goods such as oil, water, wine, etc. When unloading dangerous chemical reagents, about 0.3 tons of waste can be avoided per single time, and 1-2 man-hours can be saved per single time.

[0043] Specifically, the first valve 100, the second valve 101, the third valve 103, and the fourth valve 104 are one of a manual valve or an electric valve. In this embodiment, the manual valve is switched by manual operation, which is suitable for occasions that need direct control or low operation frequency. The electric valve is automatically controlled by an electric device, which is suitable for scenarios that need frequent operation or remote control. The first valve 100, the second valve 101, the third valve 103, and the fourth valve 104 can all choose to use electric valves, or one of them chooses to use a manual valve, and the other three choose to use electric valves, or two of them choose to use a manual valve, and the other two choose to use electric valves. There are many ways to choose, and the type of valve can be selected according to actual needs.

[0044] Further, the fourth valve 104 and the first pipeline 102 are provided with a filtering device. In this embodiment, the filtering device can effectively filter impurities in the liquid, ensuring that the purity and concentration of the sampling liquid meet the requirements of sampling analysis. This design is suitable for scenarios with high requirements for liquid purity, such as chemical industry, pharmaceutical industry, or nuclear energy industry. The setting of the filtering device not only improves the sampling quality, but also prolongs the service life of the valve and the pipeline, reduces the equipment wear or blockage problem caused by impurities, and further optimizes the overall performance and safety of the system.

[0045] The utility model embodiment further provides a tank truck system, including tank truck 20 and tank truck unloading device 10 as mentioned above.

[0046] In a more specific embodiment, during the unloading process, the user first connects the tank truck 20 and the pipeline connected with the receiving tank 30 through the first pipeline 102 (i.e. the user unloading pipeline), closes the third valve 103, opens the fifth valve 106 to introduce air, then opens the first valve 100 and the fourth valve 104, and then the reagent in the tank truck 20 flows to the first pipeline 102, and then the second valve 101 is opened for sampling; after the sampling is completed, the second valve 101 is closed, the isolation valve is opened, the user unloading pipeline is connected with the first pipeline 102, then the first valve 100 is closed to isolate the tank truck 20, then the third valve 103 is opened, at this time, the gas in the first pipeline 102 can be quickly discharged through the third valve 103, then the third valve 103 is closed, the first valve 100 is opened, then the receiving pump connected with the receiving tank 30 is started to unload, when the unloading needs to be stopped or the unloading is about to be completed, the first valve 100 is closed, the third valve 103 is opened, then the reagent in the first pipeline 102 can be basically exhausted, then the receiving pump stops running, the isolation valve is closed, and the connection between the isolation valve and the first pipeline 102 is disconnected, a small amount of residual reagent is exhausted, then the third valve 103 and the fourth valve 104 are closed, finally the connection between the first pipeline 102 and the tank truck 20 is disconnected, the fifth valve 106 is closed, and the unloading operation is completed. Through the above steps, the operation process reduces the industrial safety risk of high-risk work in nuclear power plants, simplifies the operation difficulty, effectively avoids reagent waste, reduces environmental pollution, and has a positive effect.

[0047] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts of each embodiment can be referred to each other. For the device disclosed in the embodiments, since it corresponds to the method disclosed in the embodiments, the description is relatively simple, and the related parts can be referred to the method part. It should be pointed out that for ordinary skilled in the art, without departing from the principle of the present application, the present application can be improved and modified, and these improvements and modifications also fall within the protection scope of the claims of the present application.

[0048] It should also be noted that in this specification, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive.

[0049] Comprise, when used that a process, method, article or apparatus comprises several elements or steps does not, unless specifically stated to the contrary, preclude the presence of additional elements or steps.

Claims

1. A tank truck unloading device for discharging liquid stored in a tank truck to a receiving tank, wherein the tank truck is provided with a liquid outlet, characterized in that, The tanker truck unloading device includes: A first valve, one end of which is connected to the liquid outlet; The second valve has one end connected to the other end of the first valve, and the other end of the second valve is used for the liquid to be sampled to flow out. A first pipeline, one end of which is connected to the other end of the first valve, and the other end of which is connected to the receiving tank.

2. The tank truck unloading device according to claim 1, characterized in that, It also includes a third valve, one end of which is connected to the other end of the first valve, and the other end of the third valve is used for gas discharge or gas inlet.

3. The tank truck unloading device according to claim 2, characterized in that, It also includes a fourth valve, one end of which is coupled to one end of the second valve and connected to the other end of the first valve, and the other end of the fourth valve is connected to one end of the first pipe.

4. The tank truck unloading device according to claim 1, characterized in that, It also includes a second pipe and a fifth valve. The upper part of the tank truck is provided with an air inlet. One end of the second pipe is connected to the air inlet, and the other end of the second pipe extends to the lower part of the tank truck. The fifth valve is located at the other end of the second pipe.

5. The tank truck unloading device according to claim 4, characterized in that, The first and second pipes are flexible hoses.

6. The tank truck unloading device according to claim 4, characterized in that, Both the first and second pipes are made of corrosion-resistant materials.

7. The tank truck unloading device according to claim 4, characterized in that, The first valve, the second valve, the third valve, and the fourth valve are either manual valves or electric valves.

8. A tank truck system, characterized in that, Includes tank trucks and tank truck unloading devices as described in any one of claims 1-7.

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