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 upper pressing flange; the device is characterized in that a lower pressing flange is fixed to the bottom of the upper pressing flange through a first bolt, the right end of the upper pressing flange and the right end of the lower pressing flange are each provided with a semicircular fixing column, and the outer walls of the two fixing columns are each sleeved with a semicircular connecting flange; a sealing flange connected with the connecting flange through a second bolt is arranged on the right side of the connecting flange, and a sealing gasket is arranged between the connecting flange and the sealing flange. The single-tube pressure test tool for the air cooler tube bundle is reasonable in structural design, the heat exchange tube is fixed through the pressing flange, the connecting flange and the sealing flange, practicability is high, and compared with an existing single-tube pressure test tool, the single-tube pressure test tool is low in manufacturing cost, wide in application range and high in practicability. And the limitation that the conventional single-tube pressure test tool can only be used under the working condition of being lower than 20MPa is optimized.

Description

Technical Field

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

[0002] Air coolers are widely used in the fields of petrochemical, food and medicine, energy electronics, machinery and light industry in China, and the air cooler tube bundle is the core part of the heat exchange process and the main pressure-bearing part of the air cooler. However, the current industry regulations on single-tube pressure testing of tube bundles are very limited. In GB 9948-2013 "Seamless Steel Pipes for Petroleum Cracking", the maximum pressure required for single-tube pressure testing can only reach 20MPa. In response to this situation, we proposed a single-tube pressure testing tool for high-pressure (20Mpa-35MP) air cooler tube bundles to improve the existing single-tube pressure testing problems of 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] Upper clamping flange;

[0006] It is characterized in that: a lower clamping flange is fixed to the bottom of the upper clamping flange by a first bolt, a semicircular fixing column is provided at the right end of the upper clamping flange and the right end of the lower clamping flange, a semicircular connecting flange is sleeved on the outer wall of the two fixing columns, a sealing flange connected to the connecting flange by a second bolt is provided on the right side of the connecting flange, and a sealing gasket is provided between the connecting flange and the sealing flange.

[0007] In the above structure, heat exchange tube slots are provided on the bottom end surface of the upper clamping flange and on the top end surface of the lower clamping flange.

[0008] In the above structure, a heat exchange tube insertion hole is provided in the middle of the left side wall of the sealing flange, and a pressure test hole connected to the heat exchange tube insertion hole is provided in the middle of the right side wall of the sealing flange.

[0009] Compared with the prior art, the utility model has the following beneficial effects: the utility model has a reasonable structural design for the single-tube pressure test fixture for the air cooler tube bundle, and fixes the heat exchange tube by means of a clamping flange, a connecting flange and a sealing flange, and has strong practicality. Compared with previous single-tube pressure test fixtures, the utility model has a low manufacturing cost and a wide range of uses, and optimizes the limitation that the previous single-tube pressure test fixture can only be used under working conditions below 20MPa. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] 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;

[0011] Figure 2 It is a schematic diagram of the exploded structure of the single-tube pressure test tool for the air cooler tube bundle according to an embodiment of the utility model, with the first bolt and the second bolt removed;

[0012] Figure 3 The utility model is a schematic structural diagram of a sealing flange in a single-tube pressure test tool for an air cooler tube bundle according to an embodiment of the utility model.

[0013] In the figure:

[0014] 1. Upper clamping flange; 2. First bolt; 3. Lower clamping flange; 4. Fixing column; 5. Connecting flange; 6. Second bolt; 7. Sealing flange; 8. Sealing gasket; 9. Heat exchange tube slot; 10. Heat exchange tube jack; 11. Pressure test hole. DETAILED DESCRIPTION

[0015] 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.

[0016] like Figure 1 As shown, a single tube pressure test tool for an air cooler tube bundle comprises:

[0017] Upper clamping flange 1;

[0018] It is characterized in that: a lower clamping flange 3 is fixed to the bottom of the upper clamping flange 1 by a first bolt 2, a semicircular fixing column 4 is provided at the right end of the upper clamping flange 1 and the right end of the lower clamping flange 3, a semicircular connecting flange 5 is sleeved on the outer wall of the two fixing columns 4, a sealing flange 7 connected to the connecting flange 5 by a second bolt 6 is provided on the right side of the connecting flange 5, and a sealing gasket 8 is provided between the connecting flange 5 and the sealing flange 7.

[0019] In the above structure, a heat exchange tube slot 9 is provided on the bottom end surface of the upper clamping flange 1 and on the top end surface of the lower clamping flange 3. The heat exchange tube slot 9 generates friction with the pressure test heat exchange tube, thereby effectively counteracting the pulling force generated during the pressure test.

[0020] In the above structure, a heat exchange tube insertion hole 10 is provided in the middle of the left side wall of the sealing flange 7 , and a pressure test hole 11 connected to the heat exchange tube insertion hole 10 is provided in the middle of the right side wall of the sealing flange 7 .

[0021] When the utility model is used for the single-tube pressure test tool for the air cooler tube bundle, first fix the lower clamping flange and the connecting flange on the bracket, then place the heat exchange tube inside the clamping flange and the connecting flange, install the clamping flange and another connecting flange, and connect them with bolts. Then put the sealing gasket into the sealing flange, and connect and fix the sealing flange and the connecting flange with bolts. There are pipe openings at both ends of the heat exchange tube, and one end is pressurized and the other end is depressurized, so that a single heat exchange tube can be pressure tested.

[0022] 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: Upper clamping flange (1); The invention is characterized in that: a lower clamping flange (3) is fixed to the bottom of the upper clamping flange (1) by a first bolt (2); a semicircular fixing column (4) is provided at the right end of the upper clamping flange (1) and the right end of the lower clamping flange (3); a semicircular connecting flange (5) is sleeved on the outer wall of the two fixing columns (4); a sealing flange (7) connected to the connecting flange (5) by a second bolt (6) is provided on the right side of the connecting flange (5); and a sealing gasket (8) is provided between the connecting flange (5) and the sealing flange (7).

2. The single tube pressure test tool for air cooler tube bundle according to claim 1, characterized in that: Heat exchange tube slots (9) are provided on the bottom end surface of the upper clamping flange (1) and on the top end surface of the lower clamping flange (3).

3. The single tube pressure test tool for air cooler tube bundle according to claim 1, characterized in that: A heat exchange tube insertion hole (10) is provided in the middle of the left side wall of the sealing flange (7), and a pressure test hole (11) connected to the heat exchange tube insertion hole (10) is provided in the middle of the right side wall of the sealing flange (7).

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