Hydraulic test device for high-pressure heat exchanger tube head sample

Abstract

The utility model relates to a hydrostatic test device for tube head samples of a high-pressure heat exchanger. The test device comprises a plurality of heat exchange tube samples, the test device further comprises two tube plate samples, and the tube plate samples are provided with shoulder butt joint grooves which are located on the peripheries of the round holes in the tube plate samples. The two tube plate samples are connected together, the butt joint grooves of the shoulders on the two tube plate samples form a sealing cavity, each heat exchange tube sample is arranged in the sealing cavity, and the two ends of each heat exchange tube sample penetrate through the corresponding round holes in the two tube plate samples to extend out and are welded with the two tube plate samples, so that a tube head sample is formed; the two tube plate samples which are connected together are provided with a test water inlet / outlet and a pressure gauge interface, the test water inlet / outlet and the pressure gauge interface are communicated with the sealing cavity, during test, the test water inlet / outlet is connected with a sample water inlet / outlet pipeline, and a pressure gauge is mounted on the pressure gauge interface. A pressure test shell and a pipe plug are omitted, so that materials are saved; and the size of the tube plate sample can be reduced when the same number of tube heads is required.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure heat exchangers, in particular to a water pressure testing device for a pipe head sample of a high-pressure heat exchanger. Background Art

[0002] Traditional high-pressure heat exchanger tube head sample water pressure test device, such as Figure 1 As shown, it consists of a pressure test shell 1-1, a tube sheet sample 1-2, several heat exchange tube samples 1-3, and several pipe plugs 1-4. The pressure test shell 1-1 is provided with a pressure test water inlet / outlet 1-5 and a pressure gauge interface 1-6.

[0003] The traditional high-pressure heat exchanger tube head sample water pressure test device has a relatively complex structure and many components. The high-pressure heat exchanger tube head sample water pressure test device is used to make tube head samples for water pressure testing, corresponding to the (high-pressure heat exchanger tube head) welding process. When the main welding variables change, the tube head sample is remade for water pressure testing. The complex structure and many components mean that more materials are consumed; the test shell and tube sheet samples of the traditional high-pressure heat exchanger tube head sample water pressure test device generally use fillet welds. When the test pressure is high, there are safety hazards, and special equipment is required to perform the tube head pull-off force test. Utility Model Content

[0004] The utility model provides a water pressure test device for a high-pressure heat exchanger tube head sample.

[0005] The technical solution of this utility model:

[0006] A hydraulic test device for a high-pressure heat exchanger tube head specimen, the test device comprising a plurality of heat exchange tube specimens; the test device further comprising two tube sheet specimens, the tube sheet specimens being provided with a convex butt groove, the convex butt groove being located at the periphery of a plurality of circular holes on the tube sheet specimens;

[0007] The two tube sheet samples are connected together, and the convex shoulder butt grooves on them form a sealed cavity. Each heat exchange tube sample is set in the sealed cavity, and its two ends extend through the corresponding circular holes on the two tube sheet samples and are welded to the two tube sheet samples to form a tube head sample. The two connected tube sheet samples are provided with a test water inlet / outlet and a pressure gauge interface. The test water inlet / outlet and pressure gauge interface are connected to the sealed cavity. During the test, the test water inlet / outlet is connected to the inlet / outlet sample water pipeline, and a pressure gauge is installed on the pressure gauge interface.

[0008] The two tube sheet specimens are welded together in a circular seam, which avoids the potential safety hazards of fillet welds. Radiographic or ultrasonic testing can be performed to ensure weld quality and the welds can safely withstand higher test pressures.

[0009] The test water inlet / outlet and pressure gauge interface are located at the joint of the two tube sheet specimens.

[0010] The test water inlet / outlet and pressure gauge interface are relative to each other.

[0011] The advantages of the present invention are reasonable design, simple structure, elimination of pressure test shell and tube plug, saving of materials by changing direction; adoption of two tube sheet specimens, both ends of the heat exchange tube specimen can be used, the number of tube heads is doubled, and when the same number of tube heads is required, the size of the tube sheet specimen can be reduced; it is convenient to cut the pull-off force specimen of the head, and the pull-off force test of the tube head can be carried out without special equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the water pressure test device for the traditional high-pressure heat exchanger tube head sample.

[0013] Figure 2 The utility model is a schematic diagram of a water pressure test device for a high-pressure heat exchanger tube head sample.

[0014] In the picture

[0015] Traditional high-pressure heat exchanger tube head sample hydrostatic test: test shell 1-1, tube sheet sample 1-2, heat exchange tube sample 1-3, tube plug 1-4, test water inlet / outlet 1-5, pressure gauge interface 1-6;

[0016] The utility model provides a water pressure testing device for a high-pressure heat exchanger tube head sample, comprising: a heat exchange tube sample 2-1, a tube sheet sample 2-2, a tube sheet sample 2-2, a boss butt groove 2-2-1, a sealing cavity 2-3, a test water inlet / outlet 2-4, and a pressure gauge interface 2-5. DETAILED DESCRIPTION

[0017] like Figure 2 As shown, a high-pressure heat exchanger tube head sample hydraulic test device includes a plurality of heat exchange tube samples 2-1; the test device also includes two tube sheet samples 2-2, each of which is provided with a convex butt groove 2-2-1, and the convex butt groove 2-2-1 is located at the periphery of a plurality of circular holes on the tube sheet sample 2-2; the two tube sheet samples 2-2 are connected together and circumferentially welded, and the convex butt groove 2-2-1 on them forms a sealed cavity 2-3, and each heat exchange tube sample 2-1 is disposed in the sealed cavity 2-3. Its two ends extend through the corresponding circular holes on the two tube sheet specimens 2-2 and are welded to the two tube sheet specimens 2-2 to form a tube head specimen. The two connected tube sheet specimens 2-2 are provided with a test water inlet / outlet 2-4 and a pressure gauge interface 2-5. The test water inlet / outlet 2-4 and the pressure gauge interface 2-5 are communicated with the sealing cavity 2-3. The test water inlet / outlet 2-4 and the pressure gauge interface 2-5 are located at the joint of the two tube sheet specimens 2-2; the test water inlet / outlet 2-4 and the pressure gauge interface 2-5 are opposite to each other.

[0018] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hydraulic test device for high-pressure heat exchanger tube head samples, comprising a plurality of heat exchange tube samples; characterized in that: The test device also includes two tube sheet specimens, each of which is provided with a convex butt groove, and the convex butt groove is located at the periphery of a plurality of circular holes on the tube sheet specimen; The two tube sheet samples are connected together, and the convex shoulder butt grooves on them form a sealed cavity. Each heat exchange tube sample is set in the sealed cavity, and its two ends extend through the corresponding circular holes on the two tube sheet samples and are welded to the two tube sheet samples to form a tube head sample. The two connected tube sheet samples are provided with a test water inlet / outlet and a pressure gauge interface. The test water inlet / outlet and pressure gauge interface are connected to the sealed cavity. During the test, the test water inlet / outlet is connected to the inlet / outlet sample water pipeline, and a pressure gauge is installed on the pressure gauge interface.

2. A high-pressure heat exchanger tube head sample water pressure testing device according to claim 1, characterized in that: Circumferential welds of two tube sheet specimens.

3. The high-pressure heat exchanger tube head sample water pressure testing device according to claim 1, characterized in that: The test water inlet / outlet and pressure gauge interface are located at the joint of the two tube sheet specimens.

4. A high-pressure heat exchanger pipe head sample water pressure testing device according to claim 1, characterized in that: The test water inlet / outlet and pressure gauge interface are relative to each other.

Images