Discharging arm double-ball-valve sealing replacement device

Abstract

The utility model discloses a discharging arm double-ball valve sealing replacing device, which relates to the technical field of liquefied natural gas discharging arm maintenance and comprises an upper ball valve flange fixing block and a lower ball valve flange fixing block which are connected through at least two guide mechanisms and a synchronous adjusting bolt. Adjusting nuts are arranged at two ends of the synchronous adjusting bolt; fixing bolts are arranged on the side surfaces of the upper ball valve flange fixing block and the lower ball valve flange fixing block; the upper ball valve flange fixing block is fixed to the side face of an upper ball valve flange of the to-be-mounted loading and unloading arm double-ball valve through a fixing bolt, and the lower ball valve flange fixing block is fixed to the side face of a lower ball valve flange of the to-be-mounted loading and unloading arm double-ball valve through a fixing bolt. The technical problems that in the prior art, the replacement operation of the sealing piece of the discharging arm is long in time consumption and large in operation difficulty are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquefied natural gas unloading arm maintenance, in particular to a unloading arm double ball valve seal replacement device. Background Art

[0002] The liquefied natural gas (LNG) discharge arm is a shore-ship connection device. The double ball valve in the emergency release device of the discharge arm is divided into an upper ball valve and a lower ball valve. Under normal circumstances, the upper and lower ball valves are connected together by a clamp. If the discharge arm encounters an emergency during operation, the clamp quickly opens the upper and lower ball valves to close and disengage to achieve shore-ship separation. The upper and lower ball valves are sealed by a sealing ring.

[0003] In the process of replacing the sealing ring between the upper and lower ball valves, the lower ball valve is generally fixed, and the unloading arm is moved (the upper ball valve moves) by remote control to separate and aggregate the upper and lower ball valve flanges to complete the replacement of the seal. This method is time-consuming, difficult to operate and difficult to achieve precise positioning. Utility Model Content

[0004] The purpose of the utility model is to provide a discharge arm double ball valve seal replacement device in order to solve at least one of the above technical problems.

[0005] In the first aspect, an embodiment of the utility model provides a double ball valve seal replacement device for an unloading arm, comprising: an upper ball valve flange fixing block and a lower ball valve flange fixing block, wherein the upper ball valve flange fixing block and the lower ball valve flange fixing block are connected by at least two guide mechanisms and a synchronous adjustment bolt, and adjustment nuts are arranged at both ends of the synchronous adjustment bolt; fixing bolts are arranged on the sides of the upper ball valve flange fixing block and the lower ball valve flange fixing block; the upper ball valve flange fixing block is fixed to the side of the upper ball valve flange of the double ball valve to be installed in the unloading arm by the fixing bolts, and the lower ball valve flange fixing block is fixed to the side of the lower ball valve flange of the double ball valve to be installed in the unloading arm by the fixing bolts.

[0006] Further, the guide mechanism includes a first guide mechanism and a second guide mechanism; the first guide mechanism includes a first guide rod, a first positioning hole arranged on the upper ball valve flange fixing block, and a first bolt hole arranged on the lower ball valve flange fixing block; the top end of the first guide rod passes through the first bolt hole and is fixed to the lower ball valve flange fixing block by a fixing nut, and the end of the first guide rod is inserted into the first positioning hole; the second guide mechanism includes a second guide rod, a second positioning hole arranged on the lower ball valve flange fixing block, and a second bolt hole arranged on the upper ball valve flange fixing block; the top end of the second guide rod passes through the second bolt hole and is fixed to the upper ball valve flange fixing block by a fixing nut, and the end of the second guide rod is inserted into the second positioning hole.

[0007] Furthermore, the upper ball valve flange fixing block is fixed to the side surface of the upper ball valve flange of the discharge arm double ball valve to be installed by the two fixing bolts.

[0008] Furthermore, the lower ball valve flange fixing block is fixed to the side surface of the lower ball valve flange of the unloading arm double ball valve to be installed by the two fixing bolts.

[0009] Furthermore, the sides of the upper ball valve flange fixing block and the lower ball valve flange fixing block are both provided with clamping edges, and the clamping edges clamp the sides of the upper ball valve flange or the lower ball valve flange of the discharge arm double ball valve to be installed.

[0010] The utility model provides a discharge arm double ball valve seal replacement device. During the LNG discharge arm double ball valve seal replacement operation, the upper and lower ball valve flanges of the double ball valve are respectively fixed by an upper ball valve flange fixing block and a lower ball valve flange fixing block, and the relative position between the upper and lower ball valve flanges of the double ball valve is constrained by a guide mechanism, thereby achieving accurate positioning of the upper and lower ball valve flanges, improving the efficiency of seal replacement operation, and alleviating the technical problems of long time-consuming and difficult operation of discharge arm seal replacement operation existing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0012] Figure 1 A front view schematic diagram of a discharge arm double ball valve seal replacement device provided by an embodiment of the utility model;

[0013] Figure 2A side sectional view of a discharge arm double ball valve seal replacement device provided in an embodiment of the utility model.

[0014] In the figure: 1. upper ball valve flange fixing block, 2. lower ball valve flange fixing block, 3. synchronous adjustment bolt, 4. adjustment nut, 5. fixing bolt, 6. upper ball valve flange, 7. lower ball valve flange, 8. first guide rod, 9. first positioning hole, 10. first bolt hole, 11. fixing nut, 12. second guide rod, 13. second positioning hole, 14. second bolt hole, 15. clamping edge. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] Figure 1 It is a front view of a discharge arm double ball valve seal replacement device provided according to an embodiment of the utility model. Figure 2 1 is a side cross-sectional view of a discharge arm double ball valve seal replacement device provided according to an embodiment of the utility model. Figure 1 and Figure 2 As shown, the device includes: an upper ball valve flange fixing block 1 and a lower ball valve flange fixing block 2, the upper ball valve flange fixing block 1 and the lower ball valve flange fixing block 2 are connected by at least two guide mechanisms and a synchronous adjustment bolt 3, and adjustment nuts 4 are provided at both ends of the synchronous adjustment bolt 3.

[0017] Specifically, Figure 1 and Figure 2 As shown, fixing bolts 5 are provided on the sides of the upper ball valve flange fixing block 1 and the lower ball valve flange fixing block 2; the upper ball valve flange fixing block 1 is fixed to the side of the upper ball valve flange 6 of the unloading arm double ball valve to be installed by the fixing bolts 5, and the lower ball valve flange fixing block 2 is fixed to the side of the lower ball valve flange 7 of the unloading arm double ball valve to be installed by the fixing bolts 5.

[0018] Preferably, the guide mechanism includes a first guide mechanism and a second guide mechanism.

[0019] Specifically, Figure 1As shown, the first guide mechanism includes a first guide rod 8, a first positioning hole 9 provided on the upper ball valve flange fixing block 1, and a first bolt hole 10 provided on the lower ball valve flange fixing block 2; the top end of the first guide rod 8 passes through the first bolt hole 10 and is fixed to the lower ball valve flange fixing block 2 by a fixing nut 11, and the end of the first guide rod 8 is inserted into the first positioning hole 9; wherein, the end of the first guide rod 8 can slide up and down in the first positioning hole 9.

[0020] Specifically, Figure 1 As shown, the second guide mechanism includes a second guide rod 12, a second positioning hole 13 provided on the lower ball valve flange fixing block 2, and a second bolt hole 14 provided on the upper ball valve flange fixing block 1; the top end of the second guide rod 12 passes through the second bolt hole 14 and is fixed to the upper ball valve flange fixing block 1 through the fixing nut 11, and the end of the second guide rod 12 is inserted into the second positioning hole 13. The end of the second guide rod 12 can slide up and down in the second positioning hole 13.

[0021] Preferably, the upper ball valve flange fixing block 1 is fixed to the side surface of the upper ball valve flange 6 of the unloading arm double ball valve to be installed by two fixing bolts 5 .

[0022] Preferably, the lower ball valve flange fixing block 2 is fixed to the side of the lower ball valve flange 7 of the unloading arm double ball valve to be installed by two fixing bolts 5 .

[0023] In some optional implementations provided in the embodiments of the utility model, a clamping edge 15 is provided on the side of the upper ball valve flange fixing block 1 and the lower ball valve flange fixing block 2, and the clamping edge 15 is clamped on the side of the upper ball valve flange 6 or the lower ball valve flange 7 of the unloading arm double ball valve to be installed.

[0024] The method for using a discharge arm double ball valve seal replacement device provided by an embodiment of the utility model is as follows: after opening the clamp between the upper and lower ball valves of the discharge arm, fix the upper ball valve flange fixing block 1 and the lower ball valve flange fixing block 2 to the sides of the upper ball valve flange 6 and the lower ball valve flange 7 respectively by fixing bolts 5, and then clamp the flanges of the upper and lower ball valves between the upper ball valve flange fixing block 1 and the lower ball valve flange fixing block 2 by the clamping edge 15; then adjust the distance between the upper ball valve flange fixing block 1 and the lower ball valve flange fixing block 2 by rotating the adjusting nut 4, so that the flanges of the upper and lower ball valves of the discharge arm double ball valve are separated, and the seal replacement operation can be performed at this time; after the seal replacement is completed, adjust the flange aggregation of the upper and lower ball valves of the discharge arm double ball valve by tightening the adjusting nut 4, finally remove the upper ball valve flange fixing block 1 and the lower ball valve flange fixing block 2, and install the clamp.

[0025] From the above description, it can be known that the utility model provides a discharge arm double ball valve seal replacement device. During the LNG discharge arm double ball valve seal replacement operation, the upper and lower ball valve flanges of the double ball valve are respectively fixed by the upper ball valve flange fixing block and the lower ball valve flange fixing block, and the relative position between the upper and lower ball valve flanges of the double ball valve is constrained by the guide mechanism, thereby achieving precise positioning of the upper and lower ball valve flanges, improving the efficiency of the seal replacement operation, and alleviating the technical problems of the discharge arm seal replacement operation being time-consuming and difficult to operate in the prior art.

[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A discharge arm double ball valve seal replacement device, characterized in that: include: An upper ball valve flange fixing block and a lower ball valve flange fixing block, wherein the upper ball valve flange fixing block and the lower ball valve flange fixing block are connected via at least two guide mechanisms and a synchronous adjustment bolt, and both ends of the synchronous adjustment bolt are provided with adjustment nuts; Fixing bolts are arranged on the sides of the upper ball valve flange fixing block and the lower ball valve flange fixing block; the upper ball valve flange fixing block is fixed to the side of the upper ball valve flange of the unloading arm double ball valve to be installed by the fixing bolts, and the lower ball valve flange fixing block is fixed to the side of the lower ball valve flange of the unloading arm double ball valve to be installed by the fixing bolts.

2. The discharge arm double ball valve seal replacement device according to claim 1, characterized in that: The guiding mechanism comprises a first guiding mechanism and a second guiding mechanism; The first guide mechanism includes a first guide rod, a first positioning hole provided on the upper ball valve flange fixing block, and a first bolt hole provided on the lower ball valve flange fixing block; the top end of the first guide rod passes through the first bolt hole and is fixed to the lower ball valve flange fixing block by a fixing nut, and the end of the first guide rod is inserted into the first positioning hole; The second guide mechanism includes a second guide rod, a second positioning hole arranged on the lower ball valve flange fixing block and a second bolt hole arranged on the upper ball valve flange fixing block; the top end of the second guide rod passes through the second bolt hole and is fixed to the upper ball valve flange fixing block by a fixing nut, and the end of the second guide rod is inserted into the second positioning hole.

3. The discharge arm double ball valve seal replacement device according to claim 1, characterized in that: The upper ball valve flange fixing block is fixed to the side surface of the upper ball valve flange of the discharge arm double ball valve to be installed by two fixing bolts.

4. The discharge arm double ball valve seal replacement device according to claim 1, characterized in that: The lower ball valve flange fixing block is fixed to the side surface of the lower ball valve flange of the unloading arm double ball valve to be installed by the two fixing bolts.

5. The discharge arm double ball valve seal replacement device according to claim 1, characterized in that: The sides of the upper ball valve flange fixing block and the lower ball valve flange fixing block are both provided with clamping edges, and the clamping edges are clamped on the sides of the upper ball valve flange or the lower ball valve flange of the unloading arm double ball valve to be installed.

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