CN205301092U - Raise nose above water to breathe to hold tube sheet to be float head heat -exchanger shell side pressure testing frock of flange joint formula - Google Patents

Abstract

A shell-side pressure test tooling for a floating head heat exchanger with a flange-connected floating head end tube plate, which is characterized in that it is mainly composed of a pressure test flange (1), a compression ring (2), a sealing packing (3), The sealing nut (4), the sealing washer (5) and the fastening nut (6) are composed, the pressure test flange (1) is connected with the equipment flange (7) through bolts, and the sealing packing (3) is installed on the Between the inner ring of the pressure test flange (1) and the tube plate (8) at the floating head end, the boss end of the compression ring (2) is inserted into the inner ring of the pressure test flange (1) and the tube plate (8) at the end of the floating head and the sealing packing (3) Compensation, the compression ring (2) is connected with the pressure test flange (1) through the fastening bolt; the sealing nut (4) and the fastening nut (6) are respectively screwed on the two ends of the screw rod (9) , the sealing washer (5) is installed between the sealing nut (4) and the inner surface of the floating head tube sheet (8). The utility model has the advantages of simple structure, convenient and rapid manufacture, installation and disassembly.

Description

Shell-side pressure test tooling for floating head heat exchangers with flange-connected floating head end tube plates

technical field

The utility model relates to chemical equipment, in particular to a pressure test tool for a heat exchanger, in particular to a shell-side pressure test tool for a floating head heat exchanger with a flange-connected floating head end tube plate.

Background technique

Figure 1 shows a common floating head heat exchanger. The floating head end tube plate 8 of the heat exchanger is connected with the floating head cover 10 through bolts. After the welding is completed, a pressure test must be carried out to check the welding quality and leak-proof performance of the weld of the tube head, so as to avoid leakage of the tube head when the equipment is running, causing the heat exchange medium to enter the heat exchange tube from the weld on the floating head tube plate . If the pressure test is carried out after the equipment is installed, the leakage of the pipe head weld test cannot be observed due to the cover of the floating head cover 10, so the pressure test must be carried out when the floating head cover 10 and the equipment pipe box 12 are not installed. For this purpose, corresponding tooling must be designed to replace the equipment pipe box and floating head cover to complete the relevant tests.

Utility model content

The purpose of this utility model is to design a floating head that can directly observe the welded part of the heat exchange tube in view of the problem that the pressure test of the existing floating head heat exchanger whose end tube plate is flange-connected cannot be observed due to the floating head cover. The end tube plate is a flange-connected floating head heat exchanger shell-side pressure test tooling.

The technical scheme of the utility model is:

A shell-side pressure test tooling for a floating head heat exchanger with a flange-connected floating head end tube plate, which is characterized in that it is mainly composed of a pressure test flange 1, a compression ring 2, a sealing packing 3, a sealing nut 4, a sealing The gasket 5 and the fastening nut 6 are composed, the pressure test flange 1 is connected with the equipment flange 7 through bolts, the sealing packing 3 is installed between the inner ring of the pressure test flange 1 and the floating head tube plate 8, and the compression ring The boss end of 2 is inserted into the inner ring of the pressure test flange 1, and the floating head end tube plate 8 and the sealing packing 3 are offset, and the compression ring 2 is connected with the pressure test flange 1 through fastening bolts; the sealing nut 4 and the fastening nut 6 are respectively Screwed on both ends of the screw rod 9, the sealing washer 5 is installed between the sealing nut 4 and the inner surface of the floating head tube plate 8.

A pressure ring 21 is installed between the fastening nut 6 and the floating head tube plate 8 .

The beneficial effects of the utility model:

The utility model uses the pressure test flange instead of the equipment pipe box to realize the fixing of the floating head tube plate, and realizes the sealing of the bolt hole originally connecting the floating head cover and the floating head tube plate through the sealing nut and the sealing gasket, which can be directly observed during the experiment From the leakage situation of the pipe head pressure test, the test results are clear at a glance.

The utility model has the advantages of simple structure, convenient and rapid manufacture, installation and disassembly.

Description of drawings

Fig. 1 is a structural schematic diagram of a floating head heat exchanger of the present invention.

Fig. 2 is a structural schematic diagram of the pressure test tooling of the present invention.

In the figure: 13 is the equipment shell, 19 is the inlet end tube plate, and 20 is the inlet end pipe box.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

as shown in picture 2.

A shell-side pressure test tool for a floating head heat exchanger with a flange-connected floating head end tube plate, which mainly consists of a pressure test flange 1, a compression ring 2, a sealing packing 3, a sealing nut 4, a sealing washer 5 and The pressure test flange 1 is fastened to the equipment flange 7 through bolts 16, and a gasket 15 is installed between the end face of the pressure test flange 1 and the end face of the equipment flange 7 to ensure Tightness, the sealing packing 3 is installed between the inner ring of the pressure test flange 1 and the tube plate 8 of the floating head end, and the boss end of the compression ring 2 is inserted into the inner ring of the pressure testing flange 1 and the tube plate 8 of the floating head end and the sealing packing 3 In contrast, the compression ring 2 is connected to the pressure test flange 1 through the fastening bolt 17; the sealing nut 4 and the fastening nut 6 are respectively screwed on the two ends of the screw rod 9, and the fastening nut 6 can be directly connected to the floating head tube plate 8 contact, but preferably a pressure ring 21 is installed between the floating head tube plate 8 and the fastening nut 6 to prevent the fastening nut 6 from damaging the surface of the floating head tube plate 8 during the fastening process. The sealing washer 5 is additionally installed between the sealing nut 4 and the inner surface of the floating head tube plate 8 to prevent the screw hole of the screw 9 from leaking.

During the test, the screw 9 should be installed in the screw hole in the floating head tube plate 8 first, then the sealing washer 7 should be set on the end of the screw 9 facing the equipment shell 13, and then the sealing nut 4 should be screwed on the screw 9 Then use the fastening nut 6 to press the sealing nut 4 on the floating head tube plate 8 and at the same time press the sealing gasket to realize the sealing of the screw hole during the pressure test, then set the pressure test flange 1 on the floating head tube plate 8 and use The fastening bolts 16 are fastened and connected, and then the sealing packing 3 is put into the installation space between the pressure test flange 1 and the outer surface of the floating head tube plate, and finally the compression ring 2 is inserted into the sealing packing installation space , the compression ring is connected with the pressure test flange with fastening bolts 17 to realize the compression of the sealing packing to prevent leakage between the outer peripheral surface of the floating head tube plate and the inner peripheral surface of the pressure test flange. After the installation is completed, the medium can be injected into the equipment shell from the heat exchange medium inlet port 17 on the equipment shell 13, and a pressurized test is carried out to observe whether there is fluid leakage from the welded fixing part of the heat exchange tube on the floating head end tube plate , can make a qualified or not judgment, and lay the foundation for the next step of the process. After the test is completed, the pressure test tool of the present utility model can be taken off from the equipment flange by reverse operation.

The parts not involved in the utility model are all the same as the prior art or can be realized by adopting the prior art.

Claims (2)

1. A shell-side pressure test tooling for a floating head heat exchanger with a flange-connected floating head end tube plate, which is characterized in that it is mainly composed of a pressure test flange (1), a compression ring (2), a sealing packing (3 ), sealing nut (4), sealing washer (5) and fastening nut (6), the pressure test flange (1) is connected with the equipment flange (7) through bolts, and the sealing packing (3) is added Installed between the inner ring of the pressure test flange (1) and the floating head end tube plate (8), the boss end of the compression ring (2) is inserted into the inner ring of the pressure test flange (1) and the floating head end tube plate (8) and The sealing packing (3) offsets each other, and the compression ring (2) is connected with the pressure test flange (1) through fastening bolts; the sealing nut (4) and fastening nut (6) are screwed on the two ends of the screw rod (9) On the end, the sealing washer (5) is installed between the sealing nut (4) and the inner surface of the floating head end tube plate (8). 2. The pressure test tool according to claim 1, characterized in that a pressure ring (21) is installed between the fastening nut (6) and the floating head end tube plate (8).