Single-tube pressure test tool for air cooler tube bundle
By designing a single-tube pressure testing fixture that includes a nut, air guide pipe, straight pipe, tee, bend section and pressure gauge, and using a conical rubber stopper and rubber gasket for sealing, combined with a square iron plate for tightening, the problem of inconvenience and high cost of single-tube pressure testing fixtures for air cooler tube bundles is solved, and a fast and convenient pressure testing effect is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINJIANG HONGTAI HENGYE PETROCHEMICAL CO LTD
- Filing Date
- 2025-05-30
- Publication Date
- 2026-04-24
AI Technical Summary
The existing single-tube pressure testing fixtures for air cooler tube bundles have limited applications and are difficult to use for small-scale sampling inspections, resulting in inconvenience and high costs.
A single-pipe pressure testing fixture was designed, which includes a nut, air guide tube, straight pipe, tee, bend section and pressure gauge. It uses a conical rubber stopper and rubber gasket to achieve sealing, and combines it with a square iron plate to tighten, so as to achieve a rapid pressure holding effect during the pressure test.
Axial and radial sealing of a single tube bundle in the air cooler was achieved, reducing pressure testing costs and improving the convenience and efficiency of operation.
Smart Images
Figure CN224163321U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pressure testing fixtures, and more specifically, to a single-tube pressure testing fixture for air cooler tube bundles. Background Technology
[0002] Currently, air coolers are widely used in petrochemical, food and pharmaceutical, energy and electronics, and light industry sectors. Among the components of an air cooler, the tube bundle is the main pressure-bearing part and the core component for achieving the heat exchange process. Therefore, single-tube pressure testing of the air cooler tube bundle is an important step in the maintenance process. However, the use of single-tube pressure testing fixtures is currently limited, and they are generally more suitable for testing multiple batches of single tubes. For sampling and inspecting a small number of heat exchange tubes, they are inconvenient to use and costly. Utility Model Content
[0003] The main purpose of this utility model is to provide a single-tube pressure testing fixture for air cooler tube bundles, which can effectively solve the problem that the use of single-tube pressure testing fixtures for tube bundles in the background art is relatively limited. They are usually more suitable for testing single tubes in multiple batches, and for sampling and inspecting a small number of heat exchange tubes, they are inconvenient to use and costly.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A single-tube pressure testing fixture for an air cooler tube bundle includes a nut, a gas guide pipe fixedly installed at one end of the nut, a first straight pipe threaded onto the other end of the nut, a tee at one end of the first straight pipe, a second straight pipe fixedly installed at one end of the tee, a third straight pipe fixedly installed at the other end of the tee, a bend section fixedly installed at the upper end of the third straight pipe, a fourth straight pipe fixedly installed at one end of the bend section, a pressure gauge installed on the body of the fourth straight pipe, and a ball valve installed at one end of the fourth straight pipe.
[0006] The air duct body is equipped with a sealing structure for sealing.
[0007] Preferably, the sealing structure includes a conical rubber stopper, which is fitted and fixed to the air duct body.
[0008] Preferably, a rubber pad is fixedly installed on one side of the conical rubber stopper.
[0009] Preferably, a square iron plate is fixedly installed at one end of the second straight pipe.
[0010] Compared with the prior art, the present invention has the following beneficial effects:
[0011] (1) The staff inserts the conical rubber plug at the front end into the air cooler tube bundle to be tested, and then continuously applies pressure to the square iron plate to achieve the effect of complete sealing of the air cooler tube bundle. Then, the ball valve is opened to inject test gas. After reaching the appropriate pressure, the ball valve is closed. After a period of time, the pressure gauge on the test fixture is observed to see if there is a pressure drop. When disassembling, the pressure of the square iron plate is stopped, and then the next tube bundle is tested. By using a conical rubber plug and a rubber gasket at the rear end, the axial and radial sealing of the single tube bundle of the air cooler can be well achieved. The rear end is pressed against the square iron plate to achieve the effect of rapid pressure holding and testing. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of a single-tube pressure testing fixture for an air cooler tube bundle according to the present invention.
[0013] Figure 2 This is a schematic diagram of the other side of a single-tube pressure testing fixture for an air cooler tube bundle according to the present invention.
[0014] In the diagram: 1. Nut; 2. Air pipe; 3. First straight pipe; 4. Tee; 5. Second straight pipe; 6. Third straight pipe; 7. Bend section; 8. Fourth straight pipe; 9. Pressure gauge; 10. Ball valve; 11. Sealing structure; 1101. Conical rubber stopper; 12. Rubber gasket; 13. Square iron plate. Detailed Implementation
[0015] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.
[0016] like Figures 1-2 As shown, a single-tube pressure testing fixture for an air cooler tube bundle includes a nut 1, a gas guide pipe 2 fixedly installed at one end of the nut 1, a first straight pipe 3 threadedly installed at the other end of the nut 1, a tee 4 installed at one end of the first straight pipe 3, a second straight pipe 5 fixedly installed at one end of the tee 4, a third straight pipe 6 fixedly installed at the other end of the tee 4, a bend section 7 fixedly installed at the upper end of the third straight pipe 6, a fourth straight pipe 8 fixedly installed at one end of the bend section 7, a pressure gauge 9 installed on the body of the fourth straight pipe 8, and a ball valve 10 installed at one end of the fourth straight pipe 8.
[0017] The air duct 2 is equipped with a sealing structure 11 for sealing.
[0018] The sealing structure 11 includes a conical rubber stopper 1101, which is fitted and fixed to the body of the air guide tube 2.
[0019] A rubber pad 12 is fixedly installed on one side of the conical rubber stopper 1101.
[0020] A square iron plate 13 is fixedly installed at one end of the second straight pipe 5.
[0021] The operator inserts the conical rubber plug 1101 at the front end into the air cooler tube bundle to be pressure tested, and then continuously applies pressure to the square iron plate 13 to achieve a complete seal of the air cooler tube bundle. Then, the ball valve 10 is opened to inject test gas. After reaching the appropriate pressure, the ball valve 10 is closed. After a period of time, the pressure gauge 9 on the pressure testing fixture is observed to see if there is a pressure drop. When disassembling, the pressure application of the square iron plate 13 is stopped, and then the next tube bundle is pressure tested. By using a conical rubber plug 1101 and a rubber gasket 12 at the rear end, the axial and radial seal of the single tube bundle of the air cooler can be well achieved. The rear end uses the square iron plate 13 to press against the pressure testing fixture to achieve rapid pressure holding and pressure testing.
[0022] The working principle of a single-tube pressure testing fixture for air cooler tube bundles:
[0023] During use, the operator inserts the conical rubber plug 1101 at the front end into the air cooler tube bundle to be pressure tested, and then continuously applies pressure to the square iron plate 13 to achieve a complete seal of the air cooler tube bundle. Then, the ball valve 10 is opened to inject test gas. After reaching the appropriate pressure, the ball valve 10 is closed. After a period of time, the pressure gauge 9 on the pressure testing fixture is observed to see if there is a pressure drop. When disassembling, the pressure application of the square iron plate 13 is stopped, and then the next tube bundle is pressure tested. By using a conical rubber plug 1101 and a rubber gasket 12 at the rear end, the axial and radial seal of the single tube bundle of the air cooler can be well achieved. The rear end uses the square iron plate 13 to press against the pressure testing fixture to achieve rapid pressure holding and pressure testing.
[0024] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.
Claims
1. A single-tube pressure testing fixture for air cooler tube bundles, comprising a nut (1), characterized in that: A vent pipe (2) is fixedly installed at one end of the nut (1), and a first straight pipe (3) is threaded onto the other end of the nut (1). A tee (4) is provided at one end of the first straight pipe (3). A second straight pipe (5) is fixedly installed at one end of the tee (4), and a third straight pipe (6) is fixedly installed at the other end of the tee (4). A bend section (7) is fixedly installed at the upper end of the third straight pipe (6), and a fourth straight pipe (8) is fixedly installed at one end of the bend section (7). A pressure gauge (9) is provided on the body of the fourth straight pipe (8), and a ball valve (10) is provided at one end of the fourth straight pipe (8). The air duct (2) is provided with a sealing structure (11) for sealing.
2. The single-tube pressure testing fixture for air cooler tube bundles according to claim 1, characterized in that: The sealing structure (11) includes a conical rubber stopper (1101), which is fitted and fixed to the body of the air duct (2).
3. The single-tube pressure testing fixture for air cooler tube bundles according to claim 2, characterized in that: A rubber pad (12) is fixedly installed on one side of the conical rubber stopper (1101).
4. A single-tube pressure testing fixture for air cooler tube bundles according to claim 3, characterized in that: A square iron plate (13) is fixedly installed at one end of the second straight pipe (5).