Marine large valve fixing device and method

Abstract

The invention discloses a marine large valve fixing device and method.The marine large valve fixing device comprises an upstream connecting plate, an upstream fixing support, a downstream connecting plate and a downstream fixing support, the upper side of the upstream connecting plate is fixedly connected with an upstream pipe section flange, and the lower end of the upstream connecting plate is fixedly connected with the upstream fixing support; the bottom of the upstream fixing support is fixedly connected with a hull structure, the upper side of the downstream connecting plate is fixedly connected with a downstream pipe section flange, the lower end of the downstream connecting plate is fixedly connected with the downstream fixing support, and the bottom of the downstream fixing support is fixedly connected with the hull structure. The marine large valve fixing device is adopted in the marine large valve fixing method. According to the marine large valve fixing device and method, the large valve can be directly fixed to a ship body structure, the vibration frequency and amplitude of the large valve are reduced, local stress concentration at the position of the large valve of a pipeline is reduced, the pipeline leakage risk is reduced, and the safety coefficient of system operation is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of shipbuilding, and in particular to a device and method for fixing a large ship valve. Background Art

[0002] With the development trend of larger ships, the sizes of main pipes of various ship piping systems are gradually increasing, and the sizes of pipeline valve accessories are gradually increasing. At the same time, the control methods of valves are also diversified. Pneumatic valves, hydraulic valves and solenoid valves are gradually routinely used in newly built ships. These valves often have large valve bodies and are equipped with large and heavy drive heads. In existing ship piping systems, large valves are often fixed by increasing the number of pipe supports and shortening the spacing between pipe supports. However, pipe supports can only enhance the installation strength of the pipeline. The piping system equipped with large valves still has large local shear force and stress concentration, high risk of pipeline leakage, and low safety factor of system operation. Summary of the invention

[0003] In view of the defects existing in the prior art, the present application provides a large-scale marine valve fixing device and method to solve the technical problems in the prior art such as large local shear force, stress concentration, high risk of pipeline leakage, and low safety factor of system operation in the pipeline system equipped with large valves.

[0004] In order to achieve the purpose of the above invention, the technical solution provided by the present invention is as follows:

[0005] A large-scale ship valve fixing device, wherein the large valve is connected to an upstream pipe section flange and a downstream pipe section flange respectively through connecting flanges, the upstream pipe section flange is fixed to the end of the upstream pipe section, and the downstream pipe section flange is fixed to the end of the downstream pipe section. The large-scale ship valve fixing device comprises an upstream connecting plate, an upstream fixing bracket, a downstream connecting plate and a downstream fixing bracket, the upper side of the upstream connecting plate is fixedly connected to the upstream pipe section flange, the lower end of the upstream connecting plate is fixedly connected to the upstream fixing bracket, the bottom of the upstream fixing bracket is fixedly connected to the hull structure, the upper side of the downstream connecting plate is fixedly connected to the downstream pipe section flange, the lower end of the downstream connecting plate is fixedly connected to the downstream fixing bracket, and the bottom of the downstream fixing bracket is fixedly connected to the hull structure.

[0006] In one embodiment, the large ship valve fixing device further comprises a guide rod, one end of which is fixedly connected to the hull structure, and the other end of which is rotatably connected to the valve stem or the driving head of the large valve.

[0007] In one embodiment, a guide rod web is welded to one end of the guide rod, and the guide rod web is in the shape of a runway waist circle. The guide rod web is corner welded to the hull structure, and the other end of the guide rod is rotatably connected to the valve stem or driving head of a large valve through a guide rod bolt.

[0008] In one embodiment, the upstream connecting plate and the downstream connecting plate are both L-shaped plates, and the vertical plate of the upstream connecting plate is detachably connected to the upstream pipe section flange by long connecting bolts. When the upstream pipe section flange is bolted to the connecting flange, the long connecting bolts pass through the vertical plate, the upstream pipe section flange and the connecting flange of the upstream connecting plate to fix the vertical plate, the upstream pipe section flange and the connecting flange of the upstream connecting plate, and the horizontal plate of the upstream connecting plate is detachably connected to the upstream fixed bracket by fixing bolts; the vertical plate of the downstream connecting plate is detachably connected to the downstream pipe section flange by long connecting bolts. When the downstream pipe section flange is bolted to the connecting flange, the long connecting bolts pass through the vertical plate, the downstream pipe section flange and the connecting flange of the downstream connecting plate to fix the vertical plate, the downstream pipe section flange and the connecting flange of the downstream connecting plate, and the horizontal plate of the downstream connecting plate is detachably connected to the downstream fixed bracket by fixing bolts.

[0009] In one embodiment, the upstream fixed bracket and the downstream fixed bracket are both gate-shaped brackets, the lower end of the upstream connecting plate is fixed to the upper surface of the upstream fixed bracket, and the lower end of the downstream connecting plate is fixed to the upper surface of the downstream fixed bracket.

[0010] In one embodiment, the width of the upstream fixing bracket is greater than the width of the upstream connecting plate, and the width of the downstream fixing bracket is greater than the width of the downstream connecting plate.

[0011] In one embodiment, upstream fixing webs are welded on both sides of the bottom of the upstream fixing bracket, and downstream fixing webs are welded on both sides of the bottom of the downstream fixing bracket. Both the upstream fixing web and the downstream fixing web are fillet welded to the hull structure.

[0012] In one embodiment, the upstream fixing bracket and the downstream fixing bracket are both made of angle steel, and the upstream fixing web and the downstream fixing web are both triangles matching the angle steel.

[0013] In one embodiment, reinforcing ribs are provided on the upstream connecting plate and the downstream connecting plate to fix the vertical plate and the horizontal plate, a gasket is provided between the nut of the fixing bolt and the horizontal plate, and a gasket is provided between the nut of the guide rod bolt and the guide rod.

[0014] The present application also provides a method for fixing a large marine valve, using the above-mentioned large marine valve fixing device, comprising the following steps:

[0015] S1. Connect the connection flange of the large valve to the upstream pipe section flange and the downstream pipe section flange respectively through flange bolts;

[0016] S2. The upper side of the upstream connecting plate is fixedly connected to the upstream pipe section flange by long connecting bolts, which pass through the upstream connecting plate, the upstream pipe section flange and the connecting flange in sequence; the upper side of the downstream connecting plate is fixedly connected to the downstream pipe section flange by long connecting bolts, which pass through the downstream connecting plate, the downstream pipe section flange and the connecting flange in sequence; the upstream connecting plate is placed on the upstream fixing bracket; and the downstream connecting plate is placed on the downstream fixing bracket;

[0017] S3, tighten the flange bolts in S1 and the long connecting bolts in S2, so that the upstream connecting plate, the upstream pipe section flange and the connecting flange are fixedly connected, and the downstream connecting plate, the downstream pipe section flange and the connecting flange are fixedly connected;

[0018] S4. The lower end of the upstream connecting plate is fixedly connected to the upstream fixing bracket, the bottom of the upstream fixing bracket is fixedly connected to the hull structure, the lower end of the downstream connecting plate is fixedly connected to the downstream fixing bracket, and the bottom of the downstream fixing bracket is fixedly connected to the hull structure;

[0019] S5. One end of the guide rod is fixedly connected to the hull structure, and the other end of the guide rod is rotatably connected to the valve stem or the driving head of the large valve.

[0020] Compared with the prior art, this application has at least the following beneficial effects:

[0021] The present application provides an upstream connecting plate, an upstream fixing bracket, a downstream connecting plate and a downstream fixing bracket in a large ship valve fixing device. The upstream connecting plate and the upstream fixing bracket cooperate to fix the upstream pipe section flange and the connecting flange of the large valve together to the hull structure. The downstream connecting plate and the downstream fixing bracket cooperate to fix the downstream pipe section flange and the connecting flange of the large valve together to the hull structure. The valve stem or the driving head of the large valve is rotatably connected to the hull structure through a guide rod. Not only is the large valve directly fixed to the hull structure, but the vibration frequency and amplitude of the large valve are also reduced, thereby reducing the local stress concentration at the large valve of the pipeline, reducing the risk of pipeline leakage, and improving the safety factor of system operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is an isometric view of a fixture having a large valve fixed thereto in an embodiment of the present application;

[0023] Figure 2 is a front view of a fixing device with a large valve fixed thereon in an embodiment of the present application;

[0024] Figure 3 It is a left side view of a fixing device with a large valve fixed in an embodiment of the present application;

[0025] Figure 4It is a top view of a fixing device for fixing a large valve in an embodiment of the present application.

[0026] Figure numerals: 1. upstream pipe section; 2. fixing bolt; 3. long connecting bolt; 4. short connecting bolt; 5. upstream pipe section flange; 6. guide rod bolt; 7. guide rod; 8. guide rod web; 9. large valve; 10. downstream pipe section flange; 11. downstream pipe section; 12. downstream connecting plate; 13. downstream fixing bracket; 14. downstream fixing web; 15. upstream connecting plate; 16. upstream fixing web; 17. upstream fixing bracket; 18. connecting plate reinforcement rib. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0028] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0029] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms and should not be understood as indicating or implying relative importance. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0030] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0031] In order to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings.

[0032] This embodiment provides a large-scale marine valve fixing device, such as Figure 1-4 As shown, the large valve 9 is connected to the upstream pipe section flange 5 and the downstream pipe section flange 10 respectively through connecting flanges. The upstream pipe section flange 5 is fixed to the end of the upstream pipe section 1, and the downstream pipe section flange 10 is fixed to the end of the downstream pipe section 11. The large ship valve fixing device includes an upstream connecting plate 15, an upstream fixing bracket 17, a downstream connecting plate 12 and a downstream fixing bracket 13. The upper side of the upstream connecting plate 15 is fixedly connected to the upstream pipe section flange 5, the lower end of the upstream connecting plate 15 is fixedly connected to the upstream fixing bracket 17, the bottom of the upstream fixing bracket 17 is fixedly connected to the hull structure, the upper side of the downstream connecting plate 12 is fixedly connected to the downstream pipe section flange 10, the lower end of the downstream connecting plate 12 is fixedly connected to the downstream fixing bracket 13, and the bottom of the downstream fixing bracket 13 is fixedly connected to the hull structure.

[0033] The large-scale marine valve fixing device further comprises a guide rod 7, one end of which is fixedly connected to the hull structure, and the other end of which is rotatably connected to the valve stem or the driving head of the large-scale valve 9. Figure 1 , 3 As shown, the other end of the guide rod 7 is rotatably connected to the valve stem or the driving head of the large valve 9 through the guide rod bolt 6.

[0034] In this embodiment, the upstream connecting plate 15 and the downstream connecting plate 12 are both L-shaped plates. The vertical plate of the upstream connecting plate 15 is detachably connected to the upstream pipe section flange 5 by long connecting bolts 3. When the upstream pipe section flange 5 is bolted to the connecting flange, the long connecting bolts 3 pass through the vertical plate, upstream pipe section flange 5 and connecting flange of the upstream connecting plate 15 to fix the vertical plate, upstream pipe section flange 5 and connecting flange of the upstream connecting plate 15. The horizontal plate of the upstream connecting plate 15 is detachably connected to the upstream fixed bracket 17 by fixing bolts 2; the vertical plate of the downstream connecting plate 12 is detachably connected to the downstream pipe section flange 10 by long connecting bolts 3. When the downstream pipe section flange 10 is bolted to the connecting flange, the long connecting bolts 3 pass through the vertical plate, downstream pipe section flange 10 and connecting flange of the downstream connecting plate 12 to fix the vertical plate, downstream pipe section flange 10 and connecting flange of the downstream connecting plate 12. The horizontal plate of the downstream connecting plate 12 is detachably connected to the downstream fixed bracket 13 by fixing bolts 2.

[0035] The upstream fixing bracket 17 and the downstream fixing bracket 13 are both gate-shaped brackets, the lower end of the upstream connecting plate 15 is fixed to the upper surface of the upstream fixing bracket 17, and the lower end of the downstream connecting plate 12 is fixed to the upper surface of the downstream fixing bracket 13. The width of the upstream fixing bracket 17 is greater than the width of the upstream connecting plate 15, so that the upstream fixing bracket 17 supports the upstream connecting plate 15. Similarly, the width of the downstream fixing bracket 13 is greater than the width of the downstream connecting plate 12. As shown in the figure, in order to avoid damage to the hull structure when the bottom of the upstream fixing bracket 17 is fixedly connected to the hull structure, upstream fixing webs 16 are welded to both sides of the bottom of the upstream fixing bracket 17, and downstream fixing webs 14 are welded to both sides of the bottom of the downstream fixing bracket 13. In this embodiment, the upstream fixing bracket 17 and the downstream fixing bracket 13 are both made of angle steel, and the upstream fixing webs 16 and the downstream fixing webs 14 are both fillet-welded to the hull structure. Since the upstream fixing bracket 17 and the downstream fixing bracket 13 are both made of angle steel, the upstream fixing web 16 and the downstream fixing web 14 in this embodiment are both triangular shapes that match the angle steel. Similarly, a guide rod web 8 is welded to one end of the guide rod 7 that is fixedly connected to the hull structure. The guide rod web 8 is a runway waist round shape, and the guide rod web 8 is fillet welded to the hull structure.

[0036] In order to increase the strength of the upstream connecting plate 15 and the downstream connecting plate 12, reinforcing ribs for fixing and connecting the vertical plate and the horizontal plate are provided on the upstream connecting plate 15 and the downstream connecting plate 12. In order to prevent the bolts from loosening, washers are provided between the nuts of the fixing bolts 2 and the horizontal plate, and washers are provided between the nuts of the guide rod bolts 6 and the guide rod 7.

[0037] This embodiment also provides a method for fixing a large marine valve, using the above-mentioned large marine valve fixing device, comprising the following steps:

[0038] S1. Connect the connection flange of the large valve 9 to the upstream pipe section flange 5 and the downstream pipe section flange 6 respectively through flange bolts;

[0039] S2. The upper side of the upstream connecting plate 15 is fixedly connected to the upstream pipe section flange 5 by means of long connecting bolts 3, which pass through the upstream connecting plate 15, the upstream pipe section flange 5 and the connecting flange in sequence; the upper side of the downstream connecting plate 12 is fixedly connected to the downstream pipe section flange 10 by means of long connecting bolts 5, which pass through the downstream connecting plate 12, the downstream pipe section flange 10 and the connecting flange in sequence; the upstream connecting plate 15 is placed on the upstream fixing bracket 17, and the downstream connecting plate 12 is placed on the downstream fixing bracket 13;

[0040] S3, tighten the flange bolts in S1 and the long connecting bolts 3 in S2, so that the upstream connecting plate 15, the upstream pipe section flange 5 and the connecting flange are fixedly connected, and the downstream connecting plate 12, the downstream pipe section flange 10 and the connecting flange are fixedly connected;

[0041] S4. The lower end of the upstream connecting plate 15 is fixedly connected to the upstream fixing bracket 17, the bottom of the upstream fixing bracket 17 is fixedly connected to the hull structure, the lower end of the downstream connecting plate 12 is fixedly connected to the downstream fixing bracket 13, and the bottom of the downstream fixing bracket 13 is fixedly connected to the hull structure;

[0042] S5. One end of the guide rod 7 is fixedly connected to the hull structure, and the other end of the guide rod 7 is rotatably connected to the valve stem or the driving head of the large valve 9.

[0043] In step S3, the flange bolts and the long connecting bolts 3 on the upstream pipe section flange 5 and the downstream pipe section flange 6 are tightened in a diagonal sequence.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A large-scale marine valve fixing device, wherein the large-scale valve is connected to an upstream pipe section flange and a downstream pipe section flange respectively through connecting flanges, the upstream pipe section flange is fixed to the end of the upstream pipe section, and the downstream pipe section flange is fixed to the end of the downstream pipe section, characterized in that: The large ship valve fixing device includes an upstream connecting plate, an upstream fixing bracket, a downstream connecting plate and a downstream fixing bracket. The upper side of the upstream connecting plate is fixedly connected to the upstream pipe section flange, the lower end of the upstream connecting plate is fixedly connected to the upstream fixing bracket, the bottom of the upstream fixing bracket is fixedly connected to the hull structure, the upper side of the downstream connecting plate is fixedly connected to the downstream pipe section flange, the lower end of the downstream connecting plate is fixedly connected to the downstream fixing bracket, and the bottom of the downstream fixing bracket is fixedly connected to the hull structure.

2. The large-scale marine valve fixing device according to claim 1, characterized in that: The large-scale marine valve fixing device also includes a guide rod, one end of which is fixedly connected to the hull structure, and the other end of which is rotatably connected to the valve stem or the driving head of the large-scale valve.

3. The large-scale marine valve fixing device according to claim 2, characterized in that: One end of the guide rod is welded with a guide rod web, which is in a runway waist-shaped shape and is corner-welded to the hull structure. The other end of the guide rod is rotatably connected to the valve stem or driving head of a large valve through a guide rod bolt.

4. The large-scale marine valve fixing device according to claim 2, characterized in that: The upstream connecting plate and the downstream connecting plate are both L-shaped plates. The vertical plate of the upstream connecting plate is detachably connected to the upstream pipe section flange by long connecting bolts. When the upstream pipe section flange is bolted to the connecting flange, the long connecting bolts pass through the vertical plate, the upstream pipe section flange and the connecting flange of the upstream connecting plate to fix the vertical plate, the upstream pipe section flange and the connecting flange of the upstream connecting plate. The horizontal plate of the upstream connecting plate is detachably connected to the upstream fixed bracket by fixing bolts; the vertical plate of the downstream connecting plate is detachably connected to the downstream pipe section flange by long connecting bolts. When the downstream pipe section flange is bolted to the connecting flange, the long connecting bolts pass through the vertical plate, the downstream pipe section flange and the connecting flange of the downstream connecting plate to fix the vertical plate, the downstream pipe section flange and the connecting flange of the downstream connecting plate. The horizontal plate of the downstream connecting plate is detachably connected to the downstream fixed bracket by fixing bolts.

5. The large-scale marine valve fixing device according to claim 4, characterized in that: The upstream fixed bracket and the downstream fixed bracket are both gate-shaped brackets, the lower end of the upstream connecting plate is fixed to the upper surface of the upstream fixed bracket, and the lower end of the downstream connecting plate is fixed to the upper surface of the downstream fixed bracket.

6. The large-scale marine valve fixing device according to claim 5, characterized in that: The width of the upstream fixing bracket is greater than the width of the upstream connecting plate, and the width of the downstream fixing bracket is greater than the width of the downstream connecting plate.

7. The large-scale marine valve fixing device according to claim 5, characterized in that: Upstream fixed webs are welded on both sides of the bottom of the upstream fixed bracket, and downstream fixed webs are welded on both sides of the bottom of the downstream fixed bracket. Both the upstream fixed web and the downstream fixed web are fillet welded to the hull structure.

8. The large-scale marine valve fixing device according to claim 5, characterized in that: The upstream fixing bracket and the downstream fixing bracket are both made of angle steel, and the upstream fixing web plate and the downstream fixing web plate are both triangles matching the angle steel.

9. The large-scale marine valve fixing device according to claim 5, characterized in that: Reinforcing ribs for fixing and connecting the vertical plate and the horizontal plate are arranged on the upstream connecting plate and the downstream connecting plate, a gasket is arranged between the nut of the fixing bolt and the horizontal plate, and a gasket is arranged between the nut of the guide rod bolt and the guide rod.

10. A method for fixing a large marine valve, characterized in that: The large-scale marine valve fixing device according to any one of claims 4 to 9 comprises the following steps: S1. Connect the connection flange of the large valve to the upstream pipe section flange and the downstream pipe section flange respectively through flange bolts; S2. The upper side of the upstream connecting plate is fixedly connected to the upstream pipe section flange by long connecting bolts, which pass through the upstream connecting plate, the upstream pipe section flange and the connecting flange in sequence; the upper side of the downstream connecting plate is fixedly connected to the downstream pipe section flange by long connecting bolts, which pass through the downstream connecting plate, the downstream pipe section flange and the connecting flange in sequence; the upstream connecting plate is placed on the upstream fixing bracket; and the downstream connecting plate is placed on the downstream fixing bracket; S3, tighten the flange bolts in S1 and the long connecting bolts in S2, so that the upstream connecting plate, the upstream pipe section flange and the connecting flange are fixedly connected, and the downstream connecting plate, the downstream pipe section flange and the connecting flange are fixedly connected; S4. The lower end of the upstream connecting plate is fixedly connected to the upstream fixing bracket, the bottom of the upstream fixing bracket is fixedly connected to the hull structure, the lower end of the downstream connecting plate is fixedly connected to the downstream fixing bracket, and the bottom of the downstream fixing bracket is fixedly connected to the hull structure; S5. One end of the guide rod is fixedly connected to the hull structure, and the other end of the guide rod is rotatably connected to the valve stem or the driving head of the large valve.

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