Control pipeline and oxygen conveying pipeline with same

Abstract

The utility model provides a control pipeline and an oxygen delivery pipeline with the same, the control pipeline comprises a pipeline assembly, the pipeline assembly is provided with a first connecting end and a second connecting end which are oppositely arranged, and the pipeline assembly is used for communicating a first oxygen supply pipeline and a second oxygen supply pipeline; the control valve group is arranged on the pipeline assembly; the detection assembly is arranged on the pipeline assembly and used for detecting flow data on the pipeline assembly, and the control valve set controls fluid in the pipeline assembly to flow according to the flow data; the anti-explosion shell is provided with an anti-explosion cavity, the pipeline assembly and the detection assembly are located in the anti-explosion cavity, and the first connecting end and the second connecting end extend out of the anti-explosion shell from the interior of the anti-explosion cavity. By adopting the scheme, the problem that the first oxygen supply pipeline and the second oxygen supply pipeline cannot be in a safe and stable mutual supply state in the prior art can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air separation system technical field, specifically, relate to a control pipeline and have its oxygen delivery pipeline. BACKGROUND

[0002] The first oxygen supply pipeline and the second oxygen supply pipeline of the existing air separation device cannot realize mutual supply, restrict the operation mode of the subsequent system gasification furnace, greatly influence the production operation overall planning, and the valve pipeline has no explosion-proof wall, the operation risk of the operator is big, and the first and the second oxygen supply pipeline cannot reach the safe and smooth mutual supply state. UTILITY MODEL CONTENTS

[0003] The utility model provides a control pipeline and have its oxygen delivery pipeline to solve the problem that the first and the second oxygen supply pipeline in prior art cannot reach the safe and smooth mutual supply state.

[0004] According to one aspect of the utility model, a control pipeline is provided, the control pipeline includes: a pipeline assembly, the pipeline assembly has oppositely arranged first and second connection ends, and the pipeline assembly is used for connecting the first and second oxygen supply pipelines; a control valve group is arranged on the pipeline assembly; a detection assembly is arranged on the pipeline assembly, and the detection assembly is used for detecting flow data on the pipeline assembly; the control valve group controls the flow of fluid in the pipeline assembly according to the flow data; an explosion-proof shell has an explosion-proof cavity, and the pipeline assembly and the detection assembly are located in the explosion-proof cavity; and the first and second connection ends extend from the explosion-proof cavity to the outside of the explosion-proof shell.

[0005] Further, the control valve group includes a first main control valve, a second main control valve, a first pressure dividing valve and a second pressure dividing valve, and the pipeline assembly includes: a main pipeline, the main pipeline has the first and second connection ends, and the first and second main control valves are arranged on the main pipeline; a first pressure dividing pipeline is connected in parallel with the main pipeline, the first pressure dividing pipeline is arranged close to the first connection end, the first pressure dividing valve is arranged on the first pressure dividing pipeline, and the first pressure dividing valve and the first main control valve are arranged in parallel; a second pressure dividing pipeline is connected in parallel with the main pipeline, the second pressure dividing pipeline is arranged close to the second connection end, the second pressure dividing valve is arranged on the second pressure dividing pipeline, and the second pressure dividing valve and the second main control valve are arranged in parallel.

[0006] Further, the control valve group further includes a first regulating valve and a second regulating valve, the first and second regulating valves are arranged on the main pipeline, the first pressure dividing pipeline is arranged close to the first regulating valve and on the side of the first regulating valve away from the second regulating valve, and the second pressure dividing pipeline is arranged close to the second regulating valve and on the side of the second regulating valve away from the first regulating valve.

[0007] Further, the control valve assembly further comprises a third regulating valve, the pipeline assembly further comprises a branch pipeline, the third regulating valve is arranged on the branch pipeline, and two ends of the branch pipeline are in communication with two ends of the first regulating valve.

[0008] Further, the pipeline assembly further comprises a first pressure relief pipeline and a second pressure relief pipeline, one end of the first pressure relief pipeline is in communication with the first pressure distribution pipeline, the other end of the first pressure relief pipeline is located outside the explosion-proof cavity, one end of the second pressure relief pipeline is in communication with the second pressure distribution pipeline, the other end of the second pressure relief pipeline is located outside the explosion-proof cavity, and the control valve assembly further comprises a first pressure relief valve and a second pressure relief valve, the first pressure relief valve is arranged on the first pressure relief pipeline, and the second pressure relief valve is arranged on the second pressure relief pipeline.

[0009] Further, the first main control valve, the second main control valve, the first pressure distribution valve, the second pressure distribution valve, the first pressure relief valve and the second pressure relief valve are all manual valves, and operation parts of the first main control valve, the second main control valve, the first pressure distribution valve, the second pressure distribution valve, the first pressure relief valve and the second pressure relief valve are all located outside the explosion-proof shell.

[0010] Further, the control pipeline further comprises a control system, the control system is electrically connected with the detection assembly, the first regulating valve, the second regulating valve and the third regulating valve respectively, and the control system controls opening degrees of the first regulating valve, the second regulating valve and the third regulating valve according to flow data.

[0011] Further, the control valve assembly further comprises an emergency stop valve, the emergency stop valve is arranged on the main pipeline, and the emergency stop valve is used for cutting off the first connecting end and the second connecting end.

[0012] Further, the detection assembly comprises a flow meter, a pressure meter and a flow rate meter, the flow meter, the pressure meter and the flow rate meter are arranged at the first regulating valve, the second regulating valve and the third regulating valve respectively.

[0013] According to another aspect of the utility model, an oxygen delivery pipeline is provided, the oxygen delivery pipeline comprises a main delivery pipeline, a first oxygen supply pipeline, a second oxygen supply pipeline and the above-mentioned control pipeline, the first oxygen supply pipeline and the second oxygen supply pipeline are in communication with the end part of the main delivery pipeline, and the control pipeline is in communication with the middle part of the first oxygen supply pipeline and the middle part of the second oxygen supply pipeline respectively.

[0014] The technical scheme of the utility model discloses, pipeline assembly two ends are equipped with first connecting end and second connecting end, first connecting end is connected with first oxygen supply pipeline, second connecting end is connected with second oxygen supply pipeline.Control valve group is equipped on pipeline assembly, can adjust opening according to flow data, ensure that oxygen flow does not exceed the safety range of prearranging.Detection assembly is used to measure the flow of oxygen, and through setting reasonable alarm threshold and interlock logic, realize the accurate control to oxygen flow.The explosion-proof shell is made of high-strength, explosion-proof material, and forms an explosion-proof cavity inside, places pipeline assembly and detection assembly in the explosion-proof cavity, effectively insulates the influence of external environment on internal components.The first connecting end and the second connecting end extend from both ends of the explosion-proof shell, and are connected with the external oxygen supply pipeline through a special explosion-proof sealing structure, ensuring that the oxygen leakage inside the explosion-proof cavity can be effectively controlled under any circumstances. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the application, and together with the description of the exemplary embodiments of the application given below, serve to explain the application, and do not constitute an improper limitation on the application. In the drawings:

[0016] Figure 1 The structure schematic view of the control pipeline provided by the utility model is shown.

[0017] Among them, the above-mentioned drawing includes the following sign:

[0018] 10, first connecting end;

[0019] 20, second connecting end;

[0020] 30, explosion-proof shell;

[0021] 41, first main control valve;

[0022] 42, second main control valve;

[0023] 43, first pressure reducing valve;

[0024] 44, second pressure reducing valve;

[0025] 45, first regulating valve;

[0026] 46, second regulating valve;

[0027] 47, third regulating valve;

[0028] 48, first pressure relief valve; 481, first pressure relief pipeline;

[0029] 49, second pressure relief valve; 491, second pressure relief pipeline;

[0030] 50, main pipeline;

[0031] 51. First pressure dividing line;

[0032] 52. Second pressure dividing line;

[0033] 53. Branch piping;

[0034] 60. Emergency shut-off valve;

[0035] 70. Flow meter. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0037] like Figure 1 As shown, this embodiment of the present invention provides a control pipeline, which includes a pipeline assembly, a control valve assembly, a detection assembly, and an explosion-proof housing 30. The pipeline assembly has a first connecting end 10 and a second connecting end 20 disposed opposite to each other, and is used to connect a first oxygen supply pipeline and a second oxygen supply pipeline. The control valve assembly is disposed on the pipeline assembly. The detection assembly is disposed on the pipeline assembly and is used to detect flow data on the pipeline assembly. The control valve assembly controls the fluid flow within the pipeline assembly based on the flow data. The explosion-proof housing 30 has an explosion-proof cavity, within which the pipeline assembly and the detection assembly are located. The first connecting end 10 and the second connecting end 20 extend from the explosion-proof cavity to the outside of the explosion-proof housing 30.

[0038] Applying the technical solution of this utility model, the pipeline assembly has a first connecting end 10 and a second connecting end 20 at both ends. The first connecting end 10 is connected to the first oxygen supply pipeline, and the second connecting end 20 is connected to the second oxygen supply pipeline. A control valve assembly is installed on the pipeline assembly and can adjust its opening according to flow data to ensure that the oxygen flow does not exceed a preset safety range. The detection component measures the oxygen flow and achieves precise control of oxygen flow by setting reasonable alarm thresholds and interlocking logic. The explosion-proof housing 30 is made of high-strength, explosion-proof material, forming an explosion-proof cavity inside. The pipeline assembly and detection component are placed inside the explosion-proof cavity, effectively isolating the internal components from the influence of the external environment. The first connecting end 10 and the second connecting end 20 extend from both ends of the explosion-proof housing 30 and are connected to the external oxygen supply pipeline through a special explosion-proof sealing structure, ensuring that oxygen leakage inside the explosion-proof cavity can be effectively controlled under any circumstances.

[0039] Specifically, the pipeline assembly is made of high-pressure-resistant stainless steel material, and the inner part is designed as a smooth surface to reduce the friction resistance of oxygen flow and avoid safety accidents caused by friction heat.

[0040] In the normal operation state, the control valve group maintains a preset opening degree to ensure the stability and safety of oxygen flow. When the gasifier demand changes or the air separation device unexpectedly trips, the opening degree of the control valve group is automatically adjusted or the oxygen flow is cut off, and a signal is sent to prompt the operator to take corresponding measures.

[0041] Further, the control valve group includes a first main control valve 41, a second main control valve 42, a first pressure dividing valve 43, and a second pressure dividing valve 44, and the pipeline assembly includes a main pipeline 50, a first pressure dividing pipeline 51, and a second pressure dividing pipeline 52. The main pipeline 50 has a first connecting end 10 and a second connecting end 20, and the first main control valve 41 and the second main control valve 42 are arranged on the main pipeline 50. The first pressure dividing pipeline 51 is connected in parallel with the main pipeline 50, and the first pressure dividing pipeline 51 is arranged close to the first connecting end 10. The first pressure dividing valve 43 is arranged on the first pressure dividing pipeline 51, and the first pressure dividing valve 43 and the first main control valve 41 are arranged in parallel. The second pressure dividing pipeline 52 is connected in parallel with the main pipeline 50, and the second pressure dividing pipeline 52 is arranged close to the second connecting end 20. The second pressure dividing valve 44 is arranged on the second pressure dividing pipeline 52, and the second pressure dividing valve 44 and the second main control valve 42 are arranged in parallel.

[0042] In this embodiment, the main pipeline 50 serves as the main passage of the oxygen communication pipeline, and its first connecting end 10 is connected with the first oxygen supply pipeline, and its second connecting end 20 is connected with the two series of oxygen main pipelines, and it undertakes the main oxygen transmission task. The control valve group includes a first main control valve 41 and a second main control valve 42, and the two control valves are the main control elements on the main pipeline 50, which are used to adjust the oxygen flow and flow rate. The first main control valve 41 is located on the side of the main pipeline 50 close to the first connecting end 10, and the second main control valve 42 is located on the side close to the second connecting end 20, which ensures that the flow of oxygen can be accurately controlled during operation, preventing safety risks caused by excessive flow rate. The control valve group also includes a first pressure dividing valve 43 and a second pressure dividing valve 44, wherein the first pressure dividing pipeline 51 is connected in parallel with the main pipeline 50, the first pressure dividing pipeline 51 is arranged close to the first connecting end 10, the first pressure dividing valve 43 is arranged on the first pressure dividing pipeline 51, and the first pressure dividing valve 43 and the first main control valve 41 are arranged in parallel. The first pressure dividing valve 43 and the first main control valve 41 operate in parallel, which can provide an additional flow control path to prevent oxygen delivery interruption when the main control valve fails, while sharing the pressure of the main control valve during pressure regulation to ensure stable operation of the system. The second pressure dividing pipeline 52 is connected in parallel with the main pipeline 50, close to the second connecting end 20, and in parallel with the second main control valve 42, which ensures that the flow can be effectively controlled during the oxygen transmission process of the two series of oxygen main pipelines, stabilizes the pressure, and improves the safety and reliability of the overall system.

[0043] Further, the control valve group also includes a first regulating valve 45 and a second regulating valve 46, both of which are arranged on the main pipeline 50, the first pressure dividing pipeline 51 is arranged close to the first regulating valve 45 and on the side of the first regulating valve 45 away from the second regulating valve 46, and the second pressure dividing pipeline 52 is arranged close to the second regulating valve 46 and on the side of the second regulating valve 46 away from the first regulating valve 45. In this embodiment, the first regulating valve 45 and the second regulating valve 46 are installed on the main pipeline 50 and are both located between the first main control valve 41 and the second main control valve 42. The first regulating valve 45 is arranged close to the first connecting end 10, and the second regulating valve 46 is arranged close to the second connecting end 20.

[0044] Further, the control valve group also includes a third regulating valve 47, and the pipeline assembly also includes a branch pipeline 53, the third regulating valve 47 is arranged on the branch pipeline 53, and the two ends of the branch pipeline 53 are connected in correspondence with the two ends of the first regulating valve 45. In this embodiment, a branch pipeline 53 is added in the pipeline, and the two ends of the branch pipeline 53 are connected with the upstream and downstream of the first regulating valve 45 respectively. The third regulating valve 47 is arranged on the branch pipeline 53.

[0045] Specifically, under normal circumstances, the first regulating valve 45 and the second regulating valve 46 are adjusted according to the set flow rate and flow velocity control parameters, the third regulating valve 47 remains in the full-closed state, and oxygen mainly flows through the main pipeline 50. When pressure equalization operation is required, that is, the pressure difference between the oxygen main pipes of the first and second series exceeds the set value, the third regulating valve 47 can be slowly opened to adjust the pressure difference through the branch pipeline 53 until it is within the safe working pressure difference range, and then the first and second regulating valves 46 are used for flow control. In an emergency, such as air separation device trip, the first regulating valve 45 and the second regulating valve 46 are fully closed, and the third regulating valve 47 is opened, so that the oxygen is quickly vented to a safe position through the branch pipeline 53, reducing the accumulation of oxygen in the main pipeline 50 and reducing the risk of explosion.

[0046] Further, the pipeline assembly further comprises a first pressure relief pipeline 481 and a second pressure relief pipeline 491, one end of the first pressure relief pipeline 481 is in communication with the first pressure distribution pipeline 51, the other end of the first pressure relief pipeline 481 is located outside the explosion-proof cavity, one end of the second pressure relief pipeline 491 is in communication with the second pressure distribution pipeline 52, the other end of the second pressure relief pipeline 491 is located outside the explosion-proof cavity, and the control valve group further comprises a first pressure relief valve 48 and a second pressure relief valve 49, the first pressure relief valve 48 is arranged on the first pressure relief pipeline 481, and the second pressure relief valve 49 is arranged on the second pressure relief pipeline 491.

[0047] In the embodiment, the pipeline assembly is provided with the first pressure relief pipeline 481 and the second pressure relief pipeline 491, one end of the first pressure relief pipeline 481 is connected with the first pressure distribution pipeline 51, and one end of the second pressure relief pipeline 491 is connected with the second pressure distribution pipeline 52. The first pressure relief pipeline 481 is provided with the first pressure relief valve 48, and the second pressure relief pipeline 491 is provided with the second pressure relief valve 49. When the system pressure abnormally rises, the excessive oxygen can be timely and effectively released, so that the pressure in the explosion-proof cavity does not exceed the designed bearing range, thereby preventing potential explosion risk. Under normal operating conditions, the first pressure relief pipeline 481 and the second pressure relief pipeline 491 are in the closed state to ensure normal flow of oxygen. The other ends of the first pressure relief pipeline 481 and the second pressure relief pipeline 491 are respectively led out of the explosion-proof wall and connected to a safe relief area, such as the atmosphere or a specific relief system, to ensure that the released oxygen does not pose a threat to personnel or equipment.

[0048] Further, the first main control valve 41, the second main control valve 42, the first pressure distribution valve 43, the second pressure distribution valve 44, the first pressure relief valve 48 and the second pressure relief valve 49 are all manual valves, and the operation parts of the first main control valve 41, the second main control valve 42, the first pressure distribution valve 43, the second pressure distribution valve 44, the first pressure relief valve 48 and the second pressure relief valve 49 are all located outside the explosion-proof shell 30.

[0049] In the embodiment, the first main control valve 41, the second main control valve 42, the first pressure reducing valve 43, the second pressure reducing valve 44, the first pressure relief valve 48 and the second pressure relief valve 49 are all manual valves to ensure the accuracy and safety of operation. The first main control valve 41, the second main control valve 42, the first pressure reducing valve 43, the second pressure reducing valve 44, the first pressure relief valve 48 and the second pressure relief valve 49 are all located outside the explosion-proof shell 30, so that the operator can operate in a safe environment. When emergency shutdown or maintenance is required, the operator needs to close these valves smoothly and slowly to avoid the risk of explosion caused by too fast flow rate due to sudden pressure change. The setting of the explosion-proof shell 30 ensures the safety of the operator.

[0050] Further, the control pipeline further comprises a control system electrically connected with the detection assembly, the first regulating valve 45, the second regulating valve 46 and the third regulating valve 47 respectively, and the control system controls the opening degree of the first regulating valve 45, the second regulating valve 46 and the third regulating valve 47 according to the flow data.

[0051] In the embodiment, the control system is a DCS system and a SIS system. The DCS system is used to control the valve opening degree of the first regulating valve 45, the second regulating valve 46 and the third regulating valve 47. The SIS system has a higher priority than the DCS system and is used to control the fully open or fully closed state of the first regulating valve 45, the second regulating valve 46 and the third regulating valve 47.

[0052] Further, the control valve group further comprises an emergency stop valve 60 arranged on the main pipeline 50, and the emergency stop valve 60 is used to cut off the first connecting end 10 and the second connecting end 20. In the embodiment, the emergency stop valve 60 is arranged on the main pipeline 50 and can be an eight-character blind plate, which is used to directly cut off the main pipeline 50 in an emergency to enhance safety protection.

[0053] Further, the detection assembly comprises a flow meter 70, a pressure gauge and a flow rate meter. The flow meter 70 is arranged at the first regulating valve 45, the second regulating valve 46 and the third regulating valve 47. The pressure gauge is arranged at the first regulating valve 45, the second regulating valve 46 and the third regulating valve 47. The flow rate meter is arranged at the first regulating valve 45, the second regulating valve 46 and the third regulating valve 47.

[0054] In this embodiment, the flow meter 70 is arranged outside the explosion-proof shell 30, and is arranged at positions away from the explosion-proof shell 30 of the first connecting end 10 and the second connecting end 20 respectively. The flow meter 70 is selected as a bidirectional balanced flow meter 70, which can accurately measure the flow data of oxygen flowing in the positive direction and the reverse direction, and ensure the accuracy and reliability of the data. The pressure gauges are installed in a similar manner to the flow meter 70, and can be multiple pressure measuring points, which are used for real-time monitoring of the pressure at both ends of each regulating valve. The pressure gauges are provided with liquid crystal display heads, which are convenient for field operators to directly read the pressure values, and also have a differential pressure detection function, which is used for monitoring the differential pressure change on both sides of the regulating valve. The flow rate meter is installed in a similar manner to the flow meter 70 and the pressure gauge, and is used for accurately measuring the flow rate of oxygen in the pipeline. The data of the flow rate meter will be used to determine whether the opening state of the oxygen flow regulating valve is safe, and to timely close the valve in the case of excessive flow rate, so as to avoid safety hazards.

[0055] Specifically, the data of the flow meter 70, the pressure gauge and the flow rate meter are transmitted in real time to the DCS system and the SIS system through hard-wire connection. In the DCS, the data is used for operators to monitor the real-time flow, pressure and flow rate in the oxygen flow process, so as to adjust the control strategy. In the SIS, the data is used to trigger the preset safety interlocking logic, such as when the oxygen flow rate exceeds the safety threshold, the SIS will automatically close the corresponding emergency shut-off valve to prevent the risk of explosion of the oxygen pipeline. Of course, in the present application, the operator can also manually control the control valve group through test data.

[0056] According to another aspect of the present application, an oxygen delivery pipeline is provided, which comprises a main delivery pipeline, a first oxygen supply pipeline, a second oxygen supply pipeline and the above-mentioned control pipeline, the first oxygen supply pipeline and the second oxygen supply pipeline are both in communication with the end of the main delivery pipeline, and the control pipeline is in communication with the middle part of the first oxygen supply pipeline and the middle part of the second oxygen supply pipeline respectively.

[0057] In this embodiment, the oxygen delivery pipeline comprises a main delivery pipeline, a first oxygen supply pipeline, a second oxygen supply pipeline and the above-mentioned control pipeline. The main delivery pipeline is the core of the oxygen delivery system, which is used for delivering oxygen to terminal users such as gasifiers. The diameter of the pipeline is designed according to the highest oxygen flow demand, so as to ensure that the oxygen can pass through at a reasonable flow rate, and avoid the safety risks caused by excessive flow. The main delivery pipeline is arranged along the air separation device area, and the two ends are connected with the first oxygen supply pipeline and the second oxygen supply pipeline respectively, forming a closed-loop oxygen supply network.

[0058] In a specific embodiment, the main pipeline is controlled as follows:

[0059] 1. First active control valve operation:

[0060] Only when the differential pressure of PI9101 and PI9102 is less than 0.3 MPa, the first active control valve is allowed to be opened smoothly and slowly.

[0061] If the pressure difference is greater than 0.3MPa, the first pressure reducing valve needs to be slowly opened to balance the pressure at both ends of the first active control valve.

[0062] The first active control valve should not be opened or closed too quickly, and should be smoothly and slowly opened.

[0063] After the first active control valve is opened, the first pressure reducing valve is slowly closed.

[0064] 2. Second active control valve operation:

[0065] PI9104 and PI9105 pressure difference is less than 0.3MPa, only allow smooth and slow opening of the second active control valve;

[0066] If the pressure difference is greater than 0.3MPa, the second pressure reducing valve needs to be slowly opened to balance the pressure at both ends of the second active control valve.

[0067] The second active control valve should not be opened or closed too quickly, and should be smoothly and slowly opened.

[0068] After the second active control valve is opened, the second pressure reducing valve is slowly closed.

[0069] 3. First regulating valve operation:

[0070] The first active control valve, the second active control valve and the second regulating valve are all opened, and then the first regulating valve can be smoothly and slowly opened.

[0071] Before the first regulating valve is opened, the third regulating valve should be opened to balance the pressure, and when the pressure difference between PI9102 and PI9103 is less than 0.3MPa, the first regulating valve can be smoothly and slowly opened.

[0072] 4. Second regulating valve operation:

[0073] The first active control valve and the second active control valve are both opened, and then the second regulating valve can be smoothly and slowly opened.

[0074] Before the second regulating valve is opened, the third regulating valve should be opened to balance the pressure, and through production control adjustment, when the pressure difference between PI9103 and PI9104 is less than 0.3MPa, the second regulating valve can be smoothly and slowly opened.

[0075] 5. First regulating valve and second regulating valve disassembly for maintenance:

[0076] After the first regulating valve and the second regulating valve are closed, the first active control valve, the second active control valve are closed, and it is confirmed that the first pressure reducing valve and the second pressure reducing valve are in the closed state, and the first pressure relief valve, the second pressure relief valve and the third regulating valve are smoothly and slowly opened to empty the oxygen, and when PI9102, PI9103 and PI9104 are all 0MPa, the valve can be disassembled for maintenance.

[0077] PI9101, PI9102, PI9103, PI9104 and PI9105 are measuring points of the pressure gauges. PI9101 and PI9102 are arranged on both sides of the first active control valve for detecting the pressure on both sides of the first active control valve. PI9104 and PI9105 are arranged on both sides of the second active control valve for detecting the pressure on both sides of the second active control valve, and PI9104 is arranged close to one end of the second regulating valve, and PI9104 and PI9103 are arranged on both sides of the second regulating valve for detecting the pressure on both sides of the second regulating valve.

[0078] It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments consistent with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0079] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present application unless otherwise specifically stated. It is to be understood that the drawings are not necessarily to scale as the dimensions of the parts shown are for the purpose of illustration and description only. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail, but are to be considered as part of the description. In all examples shown and discussed herein, any specific value is to be interpreted as illustrative only and not as a limitation. Thus, other examples of example embodiments can have different values. It is noted that like numbers and letters on the figures identify like parts throughout the several views, and therefore, further discussion of these parts is not necessary unless otherwise noted.

[0080] In the description of the present application, it is to be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship are usually based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and in the absence of contrary description, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0081] For purposes of the description hereinafter, spatial relative terms, such as "above", "below", "upper", "lower", and the like, can be used to describe the relative position of one element or feature to another as illustrated in the figures. It will be understood that the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. Well, the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0082] In addition, it needs to be explained that the use of "first", "second" and the like words to limit the parts, only for the convenience of the corresponding parts for the distinction, such as no other declaration, the above words have no special meaning, therefore can not be understood as the restriction of the scope of protection of the utility model.

[0083] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. 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. A control line, characterized in that, The control pipeline comprises: A pipeline assembly having a first connecting end (10) and a second connecting end (20) arranged oppositely, and used for connecting a first oxygen supply pipeline and a second oxygen supply pipeline; A control valve group arranged on the pipeline assembly; A detection assembly arranged on the pipeline assembly, used for detecting flow data on the pipeline assembly, and the control valve group controls fluid flow in the pipeline assembly according to the flow data; An explosion-proof shell (30) having an explosion-proof cavity, wherein the pipeline assembly and the detection assembly are located in the explosion-proof cavity, and the first connecting end (10) and the second connecting end (20) extend out of the explosion-proof cavity to the outside of the explosion-proof shell (30).

2. The control line of claim 1, wherein, The control valve group comprises a first main control valve (41), a second main control valve (42), a first pressure dividing valve (43) and a second pressure dividing valve (44), and the pipeline assembly comprises: A main pipeline (50) having the first connecting end (10) and the second connecting end (20), wherein the first main control valve (41) and the second main control valve (42) are arranged on the main pipeline (50); A first pressure dividing pipeline (51) connected in parallel with the main pipeline (50), wherein the first pressure dividing pipeline (51) is arranged close to the first connecting end (10), the first pressure dividing valve (43) is arranged on the first pressure dividing pipeline (51), and the first pressure dividing valve (43) and the first main control valve (41) are arranged in parallel; A second pressure dividing pipeline (52) connected in parallel with the main pipeline (50), wherein the second pressure dividing pipeline (52) is arranged close to the second connecting end (20), the second pressure dividing valve (44) is arranged on the second pressure dividing pipeline (52), and the second pressure dividing valve (44) and the second main control valve (42) are arranged in parallel.

3. The control line of claim 2, wherein, The control valve group further comprises a first regulating valve (45) and a second regulating valve (46), wherein the first regulating valve (45) and the second regulating valve (46) are arranged on the main pipeline (50), the first pressure dividing pipeline (51) is arranged close to the first regulating valve (45) and on a side of the first regulating valve (45) away from the second regulating valve (46), and the second pressure dividing pipeline (52) is arranged close to the second regulating valve (46) and on a side of the second regulating valve (46) away from the first regulating valve (45).

4. The control line of claim 3, wherein, The control valve group further comprises a third regulating valve (47), and the pipeline assembly further comprises a branch pipeline (53), wherein the third regulating valve (47) is arranged on the branch pipeline (53), and two ends of the branch pipeline (53) are connected to two ends of the first regulating valve (45) correspondingly.

5. The control line of claim 4, wherein, The pipeline assembly further comprises a first pressure relief pipeline (481) and a second pressure relief pipeline (491), one end of the first pressure relief pipeline (481) is in communication with the first partial pressure pipeline (51), the other end of the first pressure relief pipeline (481) is located outside the explosion-proof cavity, one end of the second pressure relief pipeline (491) is in communication with the second partial pressure pipeline (52), the other end of the second pressure relief pipeline (491) is located outside the explosion-proof cavity, the control valve group further comprises a first pressure relief valve (48) and a second pressure relief valve (49), the first pressure relief valve (48) is arranged on the first pressure relief pipeline (481), and the second pressure relief valve (49) is arranged on the second pressure relief pipeline (491).

6. The control line of claim 5, wherein, The first main control valve (41), the second main control valve (42), the first partial pressure valve (43), the second partial pressure valve (44), the first pressure relief valve (48) and the second pressure relief valve (49) are all manual valves, and the operation parts of the first main control valve (41), the second main control valve (42), the first partial pressure valve (43), the second partial pressure valve (44), the first pressure relief valve (48) and the second pressure relief valve (49) are all located outside the explosion-proof shell (30).

7. The control line of claim 4, wherein, The control pipeline further comprises: A control system, which is electrically connected with the detection assembly, the first regulating valve (45), the second regulating valve (46) and the third regulating valve (47) respectively, and controls the opening degrees of the first regulating valve (45), the second regulating valve (46) and the third regulating valve (47) according to the flow data.

8. The control line of claim 2, wherein, The control valve group further comprises an emergency stop valve (60), which is arranged on the main pipeline (50) and used for cutting off the first connecting end (10) and the second connecting end (20).

9. The control line of claim 5, wherein, The detection assembly comprises: A flow meter (70) arranged at the first regulating valve (45), the second regulating valve (46) and the third regulating valve (47); A pressure gauge arranged at the first regulating valve (45), the second regulating valve (46) and the third regulating valve (47); A flow rate meter arranged at the first regulating valve (45), the second regulating valve (46) and the third regulating valve (47).

10. An oxygen gas delivery line characterized by, The oxygen delivery pipeline comprises a main delivery pipeline, a first oxygen supply pipeline, a second oxygen supply pipeline and the control pipeline according to any one of claims 1 to 9, the first oxygen supply pipeline and the second oxygen supply pipeline are in communication with the end of the main delivery pipeline, and the control pipeline is in communication with the middle part of the first oxygen supply pipeline and the middle part of the second oxygen supply pipeline respectively.

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