CN217276756U

CN217276756U - Pressure test leakage detector for tube bundle of tube type air cooler

Info

Publication number: CN217276756U
Application number: CN202221063773.0U
Authority: CN
Inventors: 孟祥亮; 胡国敬; 徐海民; 魏中杰; 尤晓阳; 吴建侠
Original assignee: SHANDONG DONGMING PETROLEUM & CHEMICAL GROUP CO LTD
Current assignee: SHANDONG DONGMING PETROLEUM & CHEMICAL GROUP CO LTD
Priority date: 2022-05-06
Filing date: 2022-05-06
Publication date: 2022-08-23
Anticipated expiration: 2032-05-06

Abstract

The utility model relates to the technical field of chemical equipment, in particular to a tube nest type air cooler tube bundle pressure test leak detector, which comprises a plugging device and a gas-entraining device which are respectively arranged at the two ends of a tube bundle; the plugging device comprises a solid plugging rod and a first plug, wherein the first plug is slidably sleeved at the rear end of the solid plugging rod, the front end of the solid plugging rod is conical, the rear end of the solid plugging rod is connected with a solid thread, and a first nut is arranged on the solid thread; the air entraining equipment comprises a hollow plugging pipe, a second plug, a pressure gauge and a valve, wherein the second plug is slidably sleeved at the rear end of the hollow plugging pipe, the front end of the hollow plugging pipe is conical, the rear end of the hollow plugging pipe is connected with a hollow screw thread, the hollow screw thread is provided with a second nut, the rear end of the hollow screw thread is provided with an air inlet pipe, and the air inlet pipe is provided with the pressure gauge and the manual valve respectively. This pressure testing leak hunting ware is showing and is improving shutoff efficiency, has reduced shut down or hoist and mount, dismantlement risk, makes the equipment maintenance more convenient, safer.

Description

Pressure test leakage detector for tube bundle of tube type air cooler

Technical Field

The utility model relates to a chemical industry equipment technical field, in particular to shell and tube air cooler tube bank pressure testing leak hunting ware.

Background

In the chemical production industry, the shell and tube air cooler is a common cooling device, has obvious advantages in the aspects of energy conservation and consumption reduction of the device, but has the problems of easy scaling and easy corrosion in the actual operation process, thereby causing leakage.

Aiming at the tube bundle leakage of the tube still type air cooler, the tube bundle leakage is generally treated in a mode of plugging or replacing after a single device is cut off, and the tube bundle leakage is put into use again after the single device is cut off. In the process, because the heat exchange tube bundles are densely arranged, how to check the leakage is always a difficult problem troubling equipment maintenance personnel, the leakage points cannot be timely and accurately found out, so that the maintenance effect of the leaked equipment is influenced, the whole equipment is replaced or stopped seriously when the leakage points are serious, and the maintenance cost and the production balance are seriously influenced.

Based on this, through the problem that appears in air cooler leak hunting, leaking stoppage process, design the pressure testing leak hunting instrument that is applied to tubular air cooler tube bank pressure testing leak hunting process specially.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes prior art is not enough, provides a shell and tube air cooler tube bank pressure testing leak hunting ware.

The utility model discloses a realize through following technical scheme: a pressure test leakage detector for a tube bundle of a tube still air cooler is characterized by comprising plugging equipment and air entraining equipment which are respectively arranged at two ends of the tube bundle;

the plugging device comprises a solid plugging rod and a first plug, wherein the first plug is slidably sleeved at the rear end of the solid plugging rod, the front end of the solid plugging rod is conical, the rear end of the solid plugging rod is connected with a solid thread, and a first nut is arranged on the solid thread;

the air entraining equipment comprises a hollow plugging pipe, a second plug, a pressure gauge and a valve, wherein the second plug is slidably sleeved at the rear end of the hollow plugging pipe, the front end of the hollow plugging pipe is conical, the rear end of the hollow plugging pipe is connected with a hollow screw thread, the hollow screw thread is provided with a second nut, the rear end of the hollow screw thread is provided with an air inlet pipe, and the air inlet pipe is provided with the pressure gauge and the manual valve respectively.

Preferably, the solid plugging rod and the conical part of the hollow plugging pipe are both subjected to quenching treatment.

The beneficial effects of the utility model are that: this pressure testing leak hunting ware is showing and is improving shutoff efficiency, has reduced shut down or hoist and mount, dismantlement risk, makes the equipment maintenance more convenient, safer.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic top view of the present invention;

fig. 3 is a schematic cross-sectional view of the present invention;

FIG. 4 is a schematic view of the plugging device;

figure 5 is a schematic structural view of the bleed air installation;

in the figure, 1 tube bundle, 2 plugging devices, 21 solid plugging rods, 22 first plug threads, 23 solid screw threads, 24 first nut threads, 3 air-entraining devices, 31 hollow plugging tubes, 32 second plug threads, 33 hollow screw threads, 34 second nut threads, 35 air inlet tubes, 36 manual valves and 37 pressure gauges.

Detailed Description

In order to make the objects, technical solutions and advantageous effects of the present invention more clear, the following embodiments are combined to further explain the technical solutions of the present invention.

As shown in fig. 1 to 5, the pressure test leak detector for the tube bundle 1 of the shell and tube air cooler comprises plugging equipment 2 and air entraining equipment 3 which are respectively arranged at two ends of the tube bundle 1; the plugging device 2 comprises a solid plugging rod 21 and a first plug 22, the first plug 22 can be slidably sleeved at the rear end of the solid plugging rod 21, the front end of the solid plugging rod 21 is conical, the rear end of the solid plugging rod 21 is connected with a solid screw tooth 23, and a first nut 24 is arranged on the solid screw tooth 23; the air-entraining equipment 3 comprises a hollow plugging pipe 31, a second plug 32, a pressure gauge 37 and a valve, wherein the second plug 32 is slidably sleeved at the rear end of the hollow plugging pipe 31, the front end of the hollow plugging pipe 31 is conical, the rear end of the hollow plugging pipe 31 is connected with a hollow screw thread 33, the hollow screw thread 33 is provided with a second nut 34, the rear end of the hollow screw thread 33 is provided with an air inlet pipe 35, and the air inlet pipe 35 is respectively provided with the pressure gauge 37 and a manual valve 36.

The solid plugging rod 21 and the tapered portion of the hollow plugging tube 31 are both quenched to increase hardness and to slow down wear.

In order to compensate for the concentricity error of the outer plate wire hole and the inner plate tube hole of the tube box and the inclination of the tube hole of the tube, certain gaps are respectively arranged between the wire holes at the two ends and the solid plugging rod 21 and between the wire holes at the two ends and the hollow plugging tube 31, small-angle inclination is realized by utilizing the gaps, the plugging device 2 and the air entraining device 3 are both ensured to be tightly combined with the inner wall of the tube, and air leakage is avoided.

After the tube bundle 1 is screwed into the solid plugging rod 21 and the hollow plugging tube 31, due to the large screwing force, after the first plug 22 and the second plug 32 are unscrewed during screwing out, the solid plugging rod 21 and the hollow plugging tube 31 cannot be pulled out, so that the first nut 24 and the second nut 34 are designed, and the solid plugging rod 21 and the hollow plugging tube 31 are respectively taken out after the pressure test is completed.

When the air cooler tube bundle 1 leaks, the pipe plugs at the two ends of the suspected leakage tube bundle 1 outside the pipe box are disassembled, one end of the pipe plug is screwed into the plugging equipment 2, and the other end of the pipe plug is screwed into the air entraining equipment 3 to check the leakage. The specific operation is as follows: screwing the solid plugging rod 21 into one end of the tube bundle 1, and screwing the first plug 22; screwing the hollow plugging pipe 31 into the other end of the tube bundle 1, screwing the screw plug 32, connecting purified air, non-purified air, nitrogen and other air sources to the manual valve 36 by using a hose, opening the manual valve 36 to introduce a leakage test air source, observing the pressure by using the pressure gauge 37, pressurizing the tube bundle 1 to be the same as the air source pressure when the pressure does not rise any more, and closing the manual valve 36. Then, observing the pressure maintaining condition of the tube bundle 1 through a pressure gauge 37, and if the pressure drops rapidly, judging that a leakage point exists in the tube bundle 1; if the pressure is not significantly reduced, it can be determined that the tube bundle 1 has no leak. And after judgment is finished, opening the manual valve 36 to exhaust the pressure, and screwing the first nut 24 and the second nut 34 to respectively unscrew the solid plugging rod 21 and the hollow plugging pipe 31 from the pipe bundle 1.

After the leakage tube bundle 1 is accurately found out, the tube bundle 1 can be plugged by using modes such as a taper plug and the like, and the air cooler is guaranteed to be still normally put into service, so that the equipment maintenance cost is reduced, and the influence on production balance caused by shutdown replacement or efficiency reduction is avoided.

Other technical features than those described in the specification are known to those skilled in the art.

Claims

1. A pressure test leakage detector for a tube bundle of a tube still air cooler is characterized by comprising plugging equipment (2) and air entraining equipment (3) which are respectively arranged at two ends of the tube bundle (1);

the plugging device (2) comprises a solid plugging rod (21) and a first plug (22), the first plug (22) can be slidably sleeved at the rear end of the solid plugging rod (21), the front end of the solid plugging rod (21) is conical, the rear end of the solid plugging rod is connected with a solid thread (23), and a first nut (24) is arranged on the solid thread (23);

bleed equipment (3) are including hollow shutoff pipe (31), plug two (32), manometer (37) and valve, two (32) slidable suits of plug are in hollow shutoff pipe (31) rear end, and the front end of hollow shutoff pipe (31) is the toper, and a hollow thread (33) is connected to the rear end, is equipped with nut two (34) on hollow thread (33), and the rear end of hollow thread (33) is equipped with intake pipe (35), is equipped with manometer (37) and manual valve (36) on intake pipe (35) respectively.

2. The pressure test leak detector of the tube bundle of the tube type air cooler as claimed in claim 1, wherein the conical parts of the solid plugging rod (21) and the hollow plugging tube (31) are quenched.