Medium filling safety interlocking device and working method

Abstract

The invention discloses a medium filling safety interlocking device and a working method, and relates to the technical field of special equipment safety protection.The medium filling safety interlocking device comprises a main valve, a filling valve, a controller and a component content detection device.One end of the main valve is used for being connected with a medium source; the other end of the main valve is used for being connected with one end of a filling branch, a filling valve is arranged on the filling branch, the other end of the filling branch is used for being connected with a storage structure, one end of a detection branch is connected with a pipeline between the main valve and the filling valve, and the other end of the detection branch is connected with a component content detection device. The controller is electrically connected with the component content detection device and the filling valve, the component content detection device is used for detecting the component content and transmitting a signal to the controller, and the controller judges whether the filling valve is opened or not according to the component content detected by the component content detection device. According to the medium filling safety interlocking device and the working method, it can be ensured that the filled medium meets the requirement.

Description

Technical Field

[0001] The invention relates to the technical field of special equipment safety protection, and in particular to a medium filling safety interlocking device and a working method. Background Art

[0002] Long-tube trailers and tube bundle containers are structures that connect several or dozens of large-volume gas cylinders through porous plates, pipes and valves to form an internally interconnected and independently refillable structure. The structure can be fixed in a frame placed on the chassis of a car or directly tied to the chassis of a car, and the compressed gas can be transported to any area accessible by road through a tractor head, thereby achieving efficient and convenient point-to-point supply of compressed gas and solving the problem of the "last mile" of the pipeline network.

[0003] There are many kinds of media filled in long tube trailers and tube bundle containers, most of which are compressed natural gas and compressed hydrogen, but also compressed helium, nitrogen, air, and some are used to transport high-purity gases such as NF3, SF6, SiH4, N2O, etc. used in the production of electronic components such as chips. Each type of filling medium often has quality requirements, such as the requirements for hydrogen sulfide and oxygen content in compressed natural gas, the requirements for water content in compressed hydrogen, etc. If the quality requirements are not met, it cannot meet the use requirements and may also be dangerous. Summary of the invention

[0004] The purpose of the present invention is to provide a medium filling safety interlocking device and a working method to ensure that the filled medium meets the requirements.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a medium filling safety interlocking device, comprising: a main valve, a filling valve, a controller and at least one component content detection device, one end of the main valve is used to connect to a medium source, the other end of the main valve is used to connect to one end of a filling branch, the filling branch is provided with the filling valve, the other end of the filling branch is used to connect to a storage structure, one end of the detection branch is connected to a pipeline between the main valve and the filling valve, the other end of the detection branch is connected to the component content detection device, the controller is electrically connected to the component content detection device and the filling valve, respectively, the component content detection device is used to detect the component content and transmit the signal to the controller, and the controller determines whether to open the filling valve according to the component content detected by the component content detection device.

[0007] Preferably, a plurality of the component content detection devices are arranged in parallel, and each of the component content detection devices is connected to the other end of the detection branch respectively.

[0008] Preferably, a detection branch valve is provided on the detection branch.

[0009] Preferably, a pressure reducing valve is further provided on the detection branch, and the pressure reducing valve is located between the detection branch valve and the component content detection device.

[0010] Preferably, it also includes an unloading branch, one end of which is used to be connected to the main valve, and the other end of which is used to be connected to the storage structure, and an unloading valve is provided on the unloading branch.

[0011] Preferably, the unloading valve is a one-way valve, and the unloading valve is opened manually and closed automatically.

[0012] Preferably, there are multiple storage structures, and an inlet valve is provided at the front end of each storage structure.

[0013] Preferably, the front ends of the inlet valves merge to form a main circuit, the other end of the filling branch circuit and the other end of the unloading branch circuit merge and are connected to the main circuit, and a main valve is provided on the main circuit.

[0014] Preferably, the filling valve is a one-way valve, which opens automatically and closes manually.

[0015] The present invention also provides a working method using the medium filling safety interlocking device, including: connecting the main valve to the medium source, opening the component content detection device, the main valve and the detection branch, the medium enters the component content detection device for detection, after the detection is completed, if the content does not exceed the standard, the detection branch is closed, the controller controls the filling valve to open, the medium enters the storage structure, and after the filling is completed, the main valve and the filling valve are closed; if the content exceeds the standard, the controller controls the filling valve to close.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] The present invention determines whether a certain component exceeds the standard through a component content detection device pre-placed in the storage structure, and gives an execution signal through a controller. If it does not exceed the standard, the filling valve is opened to realize filling. If it exceeds the standard, it does not act and cannot realize filling, thereby achieving the purpose of preventing filling. The present invention can prevent the filling of the medium in a long tube trailer or a tube bundle container when the content of one or several components in the medium exceeds the standard, filling the domestic gap in the corresponding field. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 Schematic diagram of the medium filling safety interlocking device of the present invention Figure 1 (Single component content detection device);

[0020] Figure 2 Schematic diagram of the medium filling safety interlocking device of the present invention Figure 2 (Multiple component content detection devices);

[0021] In the figure: 100 - medium filling safety interlock device, 1. main valve; 2. detection branch valve; 3. pressure reducing valve; 4. component content detection device; 5. controller; 6. main valve; 7. inlet valve; 8. storage structure; 9. filling valve; 10. unloading valve. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The purpose of the present invention is to provide a medium filling safety interlocking device and a working method to ensure that the filled medium meets the requirements.

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Embodiment 1

[0026] like Figure 1 to Figure 2As shown, this embodiment provides a medium filling safety interlock device 100, which does not limit the type of filling medium, the type and content of components in the medium, etc., and is not limited to the working condition of excessive oxygen content in CNG medium, excessive water content in H2 medium, etc., and can also realize the judgment of the individual content or combined content of multiple components in the medium, etc., including: a main valve 1, a filling valve 9, a controller 5 and at least one component content detection device 4, one end of the main valve 1 is used to connect with the medium source, the other end of the main valve 1 is used to connect with one end of the filling branch, a filling valve 9 is provided on the filling branch, the other end of the filling branch is used to connect with the storage structure 8, one end of the detection branch is connected to the pipeline between the main valve 1 and the filling valve 9, the other end of the detection branch is connected to the component content detection device 4, the controller 5 is electrically connected to the component content detection device 4 and the filling valve 9 respectively, the component content detection device 4 is used to detect the component content and transmit the signal to the controller 5, and the controller 5 determines whether to open the filling valve 9 according to the component content detected by the component content detection device 4.

[0027] Specifically, in this embodiment, a plurality of component content detection devices 4 are arranged in parallel, and each component content detection device 4 is connected to the other end of the detection branch respectively.

[0028] In this embodiment, a detection branch valve 2 and a pressure reducing valve 3 are provided on the detection branch. The pressure reducing valve 3 is located between the detection branch valve 2 and the component content detection device 4. A vent valve is also connected between the component content detection device 4 and the pressure reducing valve 3.

[0029] The medium enters the detection branch after passing through the main valve 1, and enters the component content detection device 4 after passing through the detection branch valve 2 and the pressure reducing valve 3. The component content detection device 4 is selected according to the anti-filling working conditions, such as an oxygen content measuring device for detecting the oxygen content in the CNG medium, and a water content measuring device for detecting the water content in the H2 medium. The selection and accuracy of the component content detection device 4 determine the ability of the medium filling safety interlock device 100 of this embodiment to identify the medium source. If multiple components need to be judged, a bypass and a corresponding component content detection device 4 can be added to achieve this.

[0030] The component content detection device 4 and the controller 5 of this embodiment can transmit signals by wire or wirelessly. When the wired method is used, a metal protection line should be used, and when the wireless method is used, electromagnetic interference should be avoided to prevent malfunction.

[0031] In this embodiment, the component content detection device 4 is connected to the controller 5, and by setting logical control, the filling valve 9 on the filling branch line is controlled to perform or prohibit filling when the content of one or several components is greater than, equal to or less than a certain value.

[0032] In this embodiment, the filling valve 9 is a one-way valve, which opens automatically and closes manually. The medium on the filling branch can only move from the main valve 1 to the storage structure 8, and cannot move from the air level to the main valve 1.

[0033] This embodiment also includes an unloading branch, one end of the unloading branch is used to connect with the main valve 1, and the other end of the unloading branch is used to connect with the storage structure 8. An unloading valve 10 is arranged on the unloading branch, and the unloading valve 10 is a one-way valve. The unloading valve 10 is manually opened and automatically closed. The medium on the unloading branch can only move from the air level toward the main valve 1, and cannot move from the main valve 1 toward the storage structure 8.

[0034] In this embodiment, there are multiple storage structures 8. When the medium is gas, the storage structure 8 is a gas cylinder. An inlet valve 7 is provided at the front end of each storage structure 8. The inlet valve 7 can control the inlet and outlet gas of the corresponding storage structure 8. The front ends of the inlet valves 7 converge to form a main circuit. The other end of the filling branch and the other end of the unloading branch converge and are connected to the main circuit. A main valve 6 is provided on the main circuit.

[0035] The user can set the filling conditions and adjust the logic control program according to the needs, and use the medium filling safety interlock device 100 of this embodiment to realize the corresponding functions. Taking the CNG medium that prevents the filling of oxygen content exceeding the standard (oxygen content ≤ 0.5%) as an example, the component content detection device 4 can choose a company's oxygen content analysis equipment with a range of 0-5% and a resolution of 0.1% vol, and the RS-485 digital signal is output to the controller 5. The logic control unit program of the controller 5 is set as follows: if the measured oxygen content is ≤ 0.5%, unlock and open the filling valve 9 for filling; if the measured oxygen content is > 0.5%, no action will be taken, and filling will not be achieved. After opening the filling valve 9, the filling valve 9 will always be kept open until the filling valve 9 is manually adjusted back to the closed state after the filling is completed, and the action signal will be given again through the controller 5 when the next filling is performed.

[0036] In this embodiment, the component content detection device 4 placed in front of the storage structure 8 determines whether a certain component exceeds the standard, and gives an execution signal through the controller 5. If it does not exceed the standard, the filling valve 9 is opened to realize filling. If it exceeds the standard, it does not act and cannot realize filling, thereby achieving the purpose of preventing filling. The use of the unloading valve 10 to realize gas unloading will not affect the aforementioned logical control. The use of a one-way valve in the unloading valve 10 also prevents the operation of filling through the unloading branch. This embodiment can prevent the filling of the medium in the case where the content of a certain component or several components in the medium exceeds the standard in the long tube trailer and the tube bundle container, filling the domestic gap in the corresponding field.

[0037] Embodiment 2

[0038] The present embodiment provides a working method of the medium filling safety interlock device 100 using the first embodiment, including: filling process: first, make corresponding filling preparations and safety measures, connect the main valve 1 to the medium source, open the component content detection device 4, the main valve 1 and the detection branch valve 2, and the medium enters the component content detection device 4 for detection. After the detection is completed, if the content does not exceed the standard, close the detection branch valve 2, and open the vent valve to discharge the medium in the detection branch. After the discharge, close the vent valve, the controller 5 controls the opening of the filling valve 9, manually open the main valve 6 and the inlet valve 7, and the medium enters the storage structure 8 for filling. After the filling is completed, close the inlet valve 7, the main valve and the main valve 1 in turn, and manually close the filling valve 9. During the entire filling process, the unloading valve 10 is always kept in a closed state; if the content exceeds the standard, the controller 5 controls the filling valve 9 to close.

[0039] Gas unloading process: first make corresponding filling preparations and safety measures, open the main valve 1, unloading valve 10, main valve 6 and inlet valve 7 in sequence, and start unloading. After the unloading is completed, close the inlet valve 7, main valve 6, unloading valve 10 and main valve 1 in sequence; it should be noted that during the entire unloading process, the filling valve 9 and the detection branch valve 2 are always kept in the closed state, and the component content detection device 4 is in the off state.

[0040] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A medium filling safety interlocking device, characterized in that: include: A main valve, a filling valve, a controller and at least one component content detection device, one end of the main valve is used to connect to a medium source, the other end of the main valve is used to connect to one end of a filling branch, the filling branch is provided with the filling valve, the other end of the filling branch is used to connect to a storage structure, one end of the detection branch is connected to the pipeline between the main valve and the filling valve, the other end of the detection branch is connected to the component content detection device, the controller is electrically connected to the component content detection device and the filling valve, respectively, the component content detection device is used to detect the component content and transmit the signal to the controller, and the controller determines whether to open the filling valve according to the component content detected by the component content detection device.

2. The medium filling safety interlocking device according to claim 1, characterized in that: A plurality of the component content detection devices are arranged in parallel, and each of the component content detection devices is connected to the other end of the detection branch respectively.

3. The medium filling safety interlocking device according to claim 1 is characterized in that: The detection branch is provided with a detection branch valve.

4. The medium filling safety interlocking device according to claim 3 is characterized in that: The detection branch is also provided with a pressure reducing valve, which is located between the detection branch valve and the component content detection device.

5. The medium filling safety interlocking device according to claim 1, characterized in that: It also includes an unloading branch, one end of which is used to be connected to the main valve, and the other end of which is used to be connected to the storage structure, and an unloading valve is arranged on the unloading branch.

6. The medium filling safety interlocking device according to claim 5, characterized in that: The unloading valve is a one-way valve, which is opened manually and closed automatically.

7. The medium filling safety interlocking device according to claim 5, characterized in that: There are multiple storage structures, and an inlet valve is arranged at the front end of each storage structure.

8. The medium filling safety interlocking device according to claim 7, characterized in that: The front ends of the inlet valves are joined to form a main circuit, the other end of the filling branch circuit and the other end of the unloading branch circuit are joined and connected to the main circuit, and a main valve is arranged on the main circuit.

9. The medium filling safety interlocking device according to claim 1, characterized in that: The filling valve is a one-way valve, which opens automatically and closes manually.

10. A working method using the medium filling safety interlocking device according to any one of claims 1 to 9, characterized in that: include: The main valve is connected to the medium source, the component content detection device, the main valve and the detection branch are opened, and the medium enters the component content detection device for detection. After the detection is completed, if the content does not exceed the standard, the detection branch is closed, and the controller controls the filling valve to open, and the medium enters the storage structure. After filling is completed, the main valve and the filling valve are closed; if the content exceeds the standard, the controller controls the filling valve to close.

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