Single-tube pressure test tool for air cooler tube bundle

Abstract

The utility model discloses a single-tube pressure test tool for an air cooler tube bundle. The single-tube pressure test tool comprises an end plate; the utility model is characterized in that a first threaded pipe is arranged on the left end face of the end plate, a second threaded pipe communicated with the first threaded pipe is arranged on the right end face of the end plate, a pressing sleeve is fixed on the outer wall of the second threaded pipe through threads, and a sealing ring is arranged between the pressing sleeve and the second threaded pipe. The single-tube pressure test tool for the air cooler tube bundle is simple in structure and convenient to mount and dismount, and the heat exchange tubes are easy to replace; carrying is convenient, a small amount of sampling inspection can be conveniently carried out on heat exchange tubes provided by manufacturers, and cost is saved.

Description

Technical Field

[0001] The utility model relates to a single-tube pressure testing tool for an air cooler tube bundle. Background Art

[0002] At present, air coolers are widely used in the fields of petrochemical, food and medicine, energy electronics, machinery and light industry. Among the various parts that make up the air cooler, the tube bundle is the main pressure-bearing part and is also the core part of the heat exchange process. Therefore, the single-tube pressure test of the air cooler tube bundle is one of the important steps in the manufacturing process. However, the use of single-tube pressure test tooling for tube bundles is relatively limited at present, and it is usually more suitable for single-tube pressure testing of multiple batches. For the random inspection of a small number of heat exchange tubes, there are problems such as inconvenience in use and high cost. In response to this situation, we proposed a portable single-tube pressure test tooling for air cooler tube bundles. Utility Model Content

[0003] The utility model overcomes the shortcomings of the prior art and provides a single-tube pressure testing tool for an air cooler tube bundle.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a single tube pressure test tool for air cooler tube bundle, comprising:

[0005] End plate;

[0006] It is characterized in that: a first threaded tube is provided on the left end face of the end plate, a second threaded tube connected to the first threaded tube is provided on the right end face of the end plate, a pressing sleeve is fixed on the outer wall of the second threaded tube by threads, and a sealing ring is provided between the pressing sleeve and the second threaded tube.

[0007] In the above structure, a heat exchange tube insertion hole is provided inside the second threaded tube near the left end, and a first tapered hole matching with the sealing ring is provided on the right side of the heat exchange tube insertion hole.

[0008] In the above structure, a second tapered hole matching with the sealing ring is provided inside the pressing sleeve near the right end.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1) Simple structure, easy installation and disassembly, easy to replace heat exchange tubes;

[0011] 2) Easy to carry, it can be used to conduct small-scale spot checks on the heat exchange tubes provided by the manufacturer, saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of a single-tube pressure test tool for an air cooler tube bundle according to an embodiment of the utility model;

[0013] Figure 2 It is a structural schematic diagram of a middle end plate of a single tube pressure test tooling for an air cooler tube bundle according to an embodiment of the utility model;

[0014] Figure 3 It is a structural schematic diagram of a medium pressure sleeve of a single-tube pressure test tool for an air cooler tube bundle according to an embodiment of the utility model;

[0015] Figure 4 It is a structural schematic diagram of a sealing ring in a single-tube pressure test tooling for an air cooler tube bundle according to an embodiment of the utility model;

[0016] Figure 5 It is a reference diagram of the use status of a single-tube pressure testing tool for an air cooler tube bundle described in an embodiment of the utility model.

[0017] In the figure:

[0018] 1. End plate; 2. First threaded tube; 3. Second threaded tube; 4. Press sleeve; 5. Sealing ring; 6. Heat exchange tube jack; 7. First tapered hole; 8. Second tapered hole; 9. Heat exchange tube. DETAILED DESCRIPTION

[0019] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0020] like Figure 1-5 As shown, a single tube pressure test tool for an air cooler tube bundle comprises:

[0021] End plate 1;

[0022] It is characterized in that: a first threaded tube 2 is provided on the left end face of the end plate 1, a second threaded tube 3 connected with the first threaded tube 2 is provided on the right end face of the end plate 1, a pressing sleeve 4 is fixed on the outer wall of the second threaded tube 3 by threads, and a sealing ring 5 is provided between the pressing sleeve 4 and the second threaded tube 3; the cross-section of the pressing sleeve 4 is a regular hexagon.

[0023] In the above structure, a heat exchange tube insertion hole 6 is provided inside the second threaded tube 3 near the left end, and a first tapered hole 7 matching with the sealing ring 5 is provided on the right side of the heat exchange tube insertion hole 6 .

[0024] In the above structure, a second tapered hole 8 matching with the sealing ring 5 is provided inside the pressing sleeve 4 near the right end.

[0025] In the above structure, the sealing ring is a polytetrafluoroethylene sealing ring, which can undergo plastic deformation under the action of force and is used to seal and fix the heat exchange tube.

[0026] When the utility model is used for the single-tube pressure test tool for the air cooler tube bundle, the end plate is first fixed on the bracket, and then the sealing ring and the compression sleeve are put on the heat exchange tube 9, and finally the end plate and the compression sleeve are threadedly connected, and the heat exchange tube 9 is fixed by squeezing the sealing ring by the compression sleeve and the end plate, so as to realize the single-tube pressure test. The sealing ring material is polytetrafluoroethylene, which undergoes plastic deformation under the squeezing action of the compression sleeve and the end plate, increases the friction between the heat exchange tube, fixes and connects the heat exchange tube and the workpiece, and prevents leakage during the pressure test.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A single tube pressure test tool for an air cooler tube bundle, comprising: End plate (1); The invention is characterized in that: a first threaded tube (2) is provided on the left end surface of the end plate (1), a second threaded tube (3) connected to the first threaded tube (2) is provided on the right end surface of the end plate (1), a pressing sleeve (4) is fixed on the outer wall of the second threaded tube (3) by means of threads, and a sealing ring (5) is provided between the pressing sleeve (4) and the second threaded tube (3).

2. The single tube pressure test tool for air cooler tube bundle according to claim 1, characterized in that: A heat exchange tube insertion hole (6) is provided inside the second threaded tube (3) near the left end, and a first tapered hole (7) matching with the sealing ring (5) is provided on the right side of the heat exchange tube insertion hole (6).

3. The single tube pressure test tool for air cooler tube bundle according to claim 1, characterized in that: A second tapered hole (8) matching with the sealing ring (5) is provided inside the pressing sleeve (4) near the right end.

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