CN219161876U - Heat exchange tube hydrostatic test device - Google Patents
Heat exchange tube hydrostatic test device Download PDFInfo
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- CN219161876U CN219161876U CN202320196284.0U CN202320196284U CN219161876U CN 219161876 U CN219161876 U CN 219161876U CN 202320196284 U CN202320196284 U CN 202320196284U CN 219161876 U CN219161876 U CN 219161876U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model discloses a heat exchange tube hydrostatic test device which comprises a pressure testing pump, a joint and a movable ring, wherein the pressure testing pump is provided with a pressure gauge; the joint is provided with a blind hole, the blind hole is used for inserting a heat exchange tube to be tested, the bottom of the blind hole is provided with a pressure measuring channel, the pressure measuring channel penetrates through the joint to form a pressure measuring end, the pressure measuring end is used for being detachably connected with a pressure testing pump, the bottom of the blind hole is provided with a soft metal ring pad, the soft metal ring pad can elastically or plastically deform, the outer diameter of the soft metal ring pad is larger than the outer diameter of the heat exchange tube to be tested, and the inner diameter of the soft metal ring pad is smaller than the inner diameter of the heat exchange tube to be tested; the movable ring is provided with a pipe hole, the pipe hole and the blind hole are coaxially arranged, the movable ring is provided with a first fastening component for fixedly connecting the heat exchange pipe to be tested with the movable ring, and the movable ring is connected with the joint through the distance adjusting component. The heat exchange tube hydraulic pressure test device can solve the technical problems that the tightness between a joint of an existing heat exchange tube hydraulic pressure test device and a heat exchange tube to be tested is insufficient, and the heat exchange tube hydraulic pressure test device is easy to pull off when a large pressure is adopted for testing.
Description
Technical Field
The utility model relates to the technical field of heat exchange tube detection, in particular to a heat exchange tube hydrostatic test device.
Background
Heat exchangers are widely used in various industries, wherein heat exchange tubes are core components of the whole heat exchanger, and the quality of the heat exchange tubes is directly related to the normal operation of the whole heat exchanger and even system devices. Therefore, before assembling and welding, the heat exchange tube must be checked by pressure test whether the heat exchange tube has quality defects such as cracks and holes, or the heat exchange tube is very troublesome to dismantle and replace once the defective heat exchange tube is assembled and welded.
The existing heat exchange tube hydrostatic test device generally comprises a pressure test pump and a connector, the pressure test pump is communicated with the end part of the heat exchange tube to be tested by the connector, and then the pressure test pump is utilized for testing, so that the sealing condition between the connector and the heat exchange tube to be tested can seriously affect the test result, and particularly when the larger pressure is adopted for testing, pull-off is easy to occur between the connector and the heat exchange tube to be tested, so that the test fails.
Disclosure of Invention
The utility model aims to provide a heat exchange tube hydrostatic test device which can solve the technical problems that the tightness between a joint of the conventional heat exchange tube hydrostatic test device and a heat exchange tube to be tested is insufficient, and the heat exchange tube hydrostatic test device is easy to pull off when a large pressure is adopted for test.
The utility model is realized by the following technical scheme:
a heat exchange tube hydrostatic test device comprising: the pressure gauge is arranged on the pressure testing pump and used for displaying the internal pressure of the heat exchange tube to be tested; the connector is provided with a blind hole, the blind hole is used for inserting a heat exchange tube to be tested, the bottom of the blind hole is provided with a pressure measuring channel, the pressure measuring channel penetrates through the connector to form a pressure measuring end, the pressure measuring end is used for being detachably connected with the pressure testing pump, the bottom of the blind hole is provided with a soft metal ring pad, the soft metal ring pad can elastically or plastically deform, the outer diameter of the soft metal ring pad is larger than the outer diameter of the heat exchange tube to be tested, and the inner diameter of the soft metal ring pad is smaller than the inner diameter of the heat exchange tube to be tested; the movable ring is provided with a pipe hole for penetrating the heat exchange tube to be tested, the pipe hole and the blind hole are coaxially arranged, the movable ring is provided with a first fastening assembly for fixedly connecting the heat exchange tube to be tested with the movable ring, the movable ring is connected with the joint through a distance adjusting assembly, and the distance adjusting assembly can adjust the distance between the movable ring and the joint.
Optionally, the distance adjusting component comprises a plurality of studs, the plurality of studs are annularly enclosed to form the pipe hole and are in sliding connection with the movable ring, the studs are connected with one side of the joint, which is provided with a blind hole, the studs are screwed with adjusting nuts, and the adjusting nuts are used for extruding the movable ring to be close to the joint.
Optionally, the first fastening assembly includes a pair of first holding ring and a pair of first holding screw, first holding ring is located in the tube hole, and be located between tube hole pore wall and the heat exchange tube lateral wall that awaits measuring, first holding screw follows the radial screw in of tube hole remove the ring, and support tightly first holding ring, so that first holding ring holds tightly the heat exchange tube that awaits measuring.
Optionally, the side wall of the first holding ring is provided with a clamping edge along the radial outward convex, the hole wall of the pipe hole is provided with a clamping ring groove, and the clamping edge is positioned in the clamping ring groove.
Optionally, the cross-sectional dimension of the pressure measurement channel is smaller than the cross-sectional dimension of the blind hole.
Optionally, a first annular groove is formed in the side wall of the blind hole bottom, the soft metal ring pad is clamped in the first annular groove, and the outer diameter of the soft metal ring pad is slightly smaller than the diameter of the first annular groove.
Optionally, the joint is equipped with the second fastening assembly, the second fastening assembly includes a pair of second holding ring and a pair of second holding screw, the second holding ring is located in the blind hole, and be located between blind hole pore wall and the heat exchange tube lateral wall that awaits measuring, the second holding screw follows the radial screw in of blind hole connect, and support tightly the second holding ring, so that the second holds and holds tightly the heat exchange tube that awaits measuring.
Optionally, the drill way of blind hole is opened there is a plurality of keyways, second hug closely the ring terminal surface and is opened there is a plurality of auxiliary keyway, a plurality of auxiliary keyway with a plurality of keyway one-to-one, the keyway with corresponding auxiliary keyway passes through the pivot pin joint.
Optionally, an end cap is detachably connected to the joint, and the end cap is used for blocking the rotating pin.
Optionally, the joint comprises an inner joint and an outer joint, the inner joint is detachably connected with the pressure testing pump, the second holding ring is arranged in the outer joint, the outer joint is provided with a connecting hole and an internal thread, and the outer wall of the inner joint is provided with an external thread so that the inner joint can be screwed into the outer joint; the inner joint is provided with a second annular groove around the blind hole at one end which is abutted against the bottom of the connecting hole, an O-shaped sealing ring and a sealing gasket are embedded in the second annular groove, the outer diameter of the O-shaped sealing ring is slightly smaller than the diameter of the second annular groove, the inner diameter of the O-shaped sealing ring is slightly larger than the outer diameter of the heat exchange tube to be tested, and the total thickness of the O-shaped sealing ring and the sealing gasket is larger than the groove depth of the second annular groove.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
according to the heat exchange tube hydrostatic test device provided by the utility model, the blind hole is formed in the joint, and the joint is connected with the heat exchange tube to be tested in an inserting manner, so that the connection performance is primarily improved; on the basis, the soft metal ring pad is arranged at the bottom of the blind hole, and the end part of the heat exchange tube to be tested is extruded to the soft metal ring pad by inwards extruding the heat exchange tube to be tested, so that the soft metal ring pad is elastically or plastically deformed, and the sealing performance between the end part of the heat exchange tube to be tested and the bottom of the blind hole is effectively improved; on the basis, the distance between the movable ring and the joint can be shortened by connecting the movable ring with the distance adjusting assembly, so that the movable ring is driven to squeeze the soft metal ring pad, the soft metal ring pad and the soft metal ring pad are kept in a squeezed state, the sealing performance is stably improved, and the movable ring can also avoid the disconnection of the heat exchange tube to be tested and the joint.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the utility model and are incorporated in and constitute a part of this application, illustrate embodiments of the utility model. In the drawings:
fig. 1 is a schematic diagram of a heat exchange tube hydrostatic test device according to an embodiment of the present utility model.
In the drawings, the reference numerals and corresponding part names:
1-a heat exchange tube to be tested; 10-linker; 101-an inner joint; 1011-a second ring groove; 1012-O type sealing ring; 1013-gaskets; 102-an outer joint; 1021-a connecting slot; 103-end caps; 11-blind holes; 111-pressure measuring channel; 112-a first ring groove; 113-keyway; 114-rotating pins; 20-a soft metal ring pad; 30-moving the ring; 31-pipe holes; 311-clamping ring grooves; 40-stud; 41-adjusting the nut; 50-a first holding ring; 501-clamping edges; 51-a first set screw; 52-a second holding ring; 521-auxiliary keyway; 53-second set screw.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present utility model, the present utility model will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present utility model and the descriptions thereof are for illustrating the present utility model only and are not to be construed as limiting the present utility model.
Examples
Referring to fig. 1, this embodiment provides a heat exchange tube hydrostatic test device, including: the pressure gauge is arranged on the pressure testing pump and used for displaying the internal pressure of the heat exchange tube to be tested; the second comprises a joint 10, wherein the joint 10 is provided with a blind hole 11, the blind hole 11 is used for inserting a heat exchange tube to be tested, the bottom of the blind hole 11 is provided with a pressure measuring channel 111, the pressure measuring channel 111 penetrates through the joint 10 to form a pressure measuring end, the pressure measuring end is used for being detachably connected with a pressure testing pump, the bottom of the blind hole 11 is provided with a soft metal ring pad 20, the soft metal ring pad 20 can be elastically or plastically deformed, the outer diameter of the soft metal ring pad 20 is larger than the outer diameter of the heat exchange tube to be tested, and the inner diameter of the soft metal ring pad 20 is smaller than the inner diameter of the heat exchange tube to be tested; the third comprises a movable ring 30, the movable ring 30 is provided with a tube hole 31 for penetrating the heat exchange tube to be measured, the tube hole 31 and the blind hole 11 are coaxially arranged, the movable ring 30 is provided with a first fastening component for fixedly connecting the heat exchange tube to be measured with the movable ring 30, the movable ring 30 is connected with the joint 10 through a distance adjusting component, and the distance adjusting component can adjust the distance between the movable ring 30 and the joint 10.
The inner joint 101 is connected with the heat exchange tube 1 to be tested in a plugging manner by forming a blind hole 11 in the joint, so that the connection performance is primarily improved; on the basis, the soft metal ring cushion 20 is arranged at the bottom of the blind hole 11, and the end part of the heat exchange tube 1 to be tested is extruded inwards to extrude the soft metal ring cushion 20, so that the soft metal ring cushion 20 is elastically or plastically deformed, and the sealing performance between the end part of the heat exchange tube 1 to be tested and the bottom of the blind hole 11 is effectively improved; on the basis, by arranging the movable ring 30, arranging the pipe hole 31 on the movable ring 30 and arranging the first fastening component, the heat exchange pipe 1 to be tested is positioned in the pipe hole 31, the first fastening component is used for fixing the heat exchange pipe 1 to be tested and the movable ring 30 into a whole, on the basis, the movable ring 30 is connected with the inner joint 101 by utilizing the distance adjusting component, the distance between the movable ring 30 and the inner joint 101 can be shortened by utilizing the distance adjusting component, thereby driving the heat exchange pipe 1 to be tested to squeeze the soft metal ring pad 20, keeping the soft metal ring pad 20 and the soft metal ring pad to be in a squeezing state, stably improving the sealing performance, and the movable ring 30 can also prevent the heat exchange pipe 1 to be tested from being separated from the inner joint 101.
It should be noted that the soft metal ring pad 20 may be made of red copper or aluminum.
In order to further explain the specific structure of the distance adjusting assembly, the distance adjusting assembly includes a plurality of studs 40, the plurality of studs 40 are annularly surrounding the pipe hole 31 and slidably connected with the movable ring 30, the studs 40 are connected with one side of the joint 10 where the blind hole 11 is formed, the studs 40 are screwed with adjusting nuts 41, and the adjusting nuts 41 are used for extruding the movable ring 30 to be close to the joint 10.
By arranging a plurality of studs 40, the studs 40 surround the pipe holes 31, and the stress conditions of the heat exchange pipe 1 to be tested in all directions are basically balanced, so that the inclination of the extrusion surfaces of the heat exchange pipe 1 to be tested and the soft metal ring cushion 20 is prevented, and gaps are formed.
In order to further explain the specific structure of the first fastening assembly, the first fastening assembly includes a pair of first holding rings 50 and a pair of first fastening screws 51, where the first holding rings 50 are disposed in the tube holes 31 and located between the walls of the tube holes 31 and the side walls of the heat exchange tube 1 to be tested, and the first fastening screws 51 are screwed into the moving ring 30 along the radial direction of the tube holes 31 and abut against the first holding rings 50, so that the first holding rings 50 hold the heat exchange tube 1 to be tested.
When the heat exchange tube is used, the first holding ring 50 is loosened by outwards screwing the first set screw 51, then the heat exchange tube 1 to be measured is inserted into the tube hole 31, then the first set screw 51 is inwards screwed, the first holding ring 50 is extruded, and the first holding ring 50 holds the heat exchange tube 1 to be measured.
In order to prevent the first holding ring 50 from falling from the pipe hole 31, a clamping edge 501 is radially and outwardly protruded from the side wall of the first holding ring 50, a clamping ring groove 311 is opened on the wall of the pipe hole 31, and the clamping edge 501 is located in the clamping ring groove 311.
By opening the clamping ring groove 311 and providing the clamping edge 501, the clamping edge 501 is inserted into the clamping ring groove 311, so that the first holding ring 50 is axially limited and is prevented from falling from the pipe hole 31.
Preferably, the cross-sectional dimension of the pressure measuring channel 111 is smaller than the cross-sectional dimension of the blind hole 11. By this arrangement, the bottom of the blind hole 11 can support the soft metal ring pad 20, and the soft metal ring pad 20 is not pressed into the pressure measuring through groove 111.
In order to further improve the sealing performance of the soft metal ring pad 20, a first annular groove 112 is formed in the sidewall of the bottom of the blind hole 11, the soft metal ring pad 20 is clamped in the first annular groove 112, and the outer diameter of the soft metal ring pad 20 is slightly smaller than the diameter of the first annular groove 112.
Through setting up first annular groove 112, with soft metal ring pad 20 embedding in it, utilize two step faces effective increase area of contact, thereby initially promote sealing performance, on this basis, through setting up the external diameter of soft metal ring pad 20 slightly more than the internal diameter of first annular groove 112, when soft metal ring pad 20 embeds, the cell wall of first annular groove 112 inwards extrudees soft metal ring pad 20, thereby adopt the extruded mode to further promote sealing performance between the two, on this basis, when the soft metal ring pad 20 of extrusion is followed thickness direction to the heat exchange tube 1 tip that awaits measuring, soft metal ring pad 20 radially outwards expands, further pack first annular groove 112, thereby further promote sealing performance.
In order to strengthen the fixing condition of the extruded heat exchange tube 1 to be tested, the joint 10 is provided with a second fastening assembly, the second fastening assembly comprises a pair of second holding rings 52 and a pair of second holding screws 53, the second holding rings 52 are arranged in the blind holes 11 and are positioned between the walls of the blind holes 11 and the side walls of the heat exchange tube 1 to be tested, and the second holding screws 53 are screwed into the joint 10 along the radial direction of the blind holes 11 and abut against the second holding rings 52 so that the second holding rings 52 hold the heat exchange tube 1 to be tested.
In order to prevent unnecessary relative rotation between the second holding ring 52 and the blind hole 11, the orifice of the blind hole 11 is provided with a plurality of keyways 113, the end surface of the second holding ring 52 is provided with a plurality of auxiliary keyways 521, a plurality of auxiliary keyways 521 are in one-to-one correspondence with a plurality of keyways 113, and the keyways 113 are in pin connection with the corresponding auxiliary keyways 521 through the rotary pins 114.
In order to prevent the positioning member 114 and the second holding ring 52 from falling out of the blind hole 11, the joint 10 is detachably connected with an end cover 103, and the end cover 103 is used for blocking the rotating pin 114.
In order to further improve the sealing performance of the joint 10, the joint 10 includes an inner joint 101 and an outer joint 102, the inner joint 101 is detachably connected with the pressure test pump, the second holding ring 52 is arranged in the outer joint 102, the outer joint 102 is provided with a connecting hole 1021 and an internal thread, and the outer wall of the inner joint 101 is provided with an external thread, so that the inner joint 101 can be screwed into the outer joint 102; the end of the nipple 101, which is abutted against the bottom of the connecting hole 1021, is provided with a second annular groove 1011 around the blind hole 11, the second annular groove 1011 is embedded with an O-ring 1012 and a sealing gasket 1013, the outer diameter of the O-ring 1012 is slightly smaller than the diameter of the second annular groove 1011, the inner diameter of the O-ring 1012 is slightly larger than the outer diameter of the heat exchange tube to be tested, and the total thickness of the O-ring 1012 and the sealing gasket 1013 is larger than the groove depth of the second annular groove 1011.
Through setting up O type sealing washer 1012, carry out secondary seal between heat exchange tube 1 to be tested and the blind hole 11, through setting up nipple 101 and including nipple 101 and outer joint 102, the loading and unloading of O type sealing washer 1012 of being convenient for.
The O-ring 1012 is also provided with a gasket 1013 for blocking the O-ring 1012.
The specific use mode is as follows:
s1, packing a soft metal ring gasket 20, an O-shaped sealing ring 1012 and a sealing gasket 1013 in an inner joint 101;
s2, mounting the second holding ring 52, the rotary pin 114, the end cover 103 and the second set screw 53 on the outer joint 102;
s3, mounting the stud 40 on the end cover 103;
s4, mounting the first holding ring 50 and the first set screw 51 on the movable ring 30, threading the movable ring 30 on the stud 40, and mounting the adjusting nut 41;
s5, screwing the outer joint 102 into the inner joint 101 (manual screwing is needed);
s6, penetrating the heat exchange tube 1 to be tested into the device, wherein the end part of the heat exchange tube 1 to be tested is contacted with the soft metal ring pad 20 of the inner hole of the inner joint 101;
s7, screwing the outer joint 102 on the inner joint 101 by using a wrench;
s8, adjusting the distance between the movable ring 30 and the end cover 103 to about 10mm, tightly pushing the first holding ring 50 by the first set screw 51, and then screwing the adjusting nut 41 to enable the first holding ring 50 to drive the heat exchange tube 1 to be tested to move leftwards until the end part of the heat exchange tube 1 to be tested is pressed into the soft metal ring pad 20;
s9, tightening the second fastening screw 53 on the outer joint 102 to enable the second holding ring 52 to hold the heat exchange tube 1 to be tested;
s10, connecting the inner joint 101 with a pressure testing pump joint and a pressure gauge joint, and performing a hydraulic test;
s11, after the hydrostatic test is finished, the first set screw 51 and the second set screw 53 are unscrewed, the outer joint 102 is unscrewed (only by withdrawing 1-2 circles), and the adjusting nut 41 is unscrewed;
s12, taking out the heat exchange tube 1 to be tested, and continuing to carry out the next heat exchange tube hydrostatic test according to the steps.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the utility model, and is not meant to limit the scope of the utility model, but to limit the utility model to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (10)
1. A heat exchange tube hydrostatic test device, comprising:
the pressure gauge is arranged on the pressure testing pump and used for displaying the internal pressure of the heat exchange tube to be tested;
the connector (10), the connector (10) is provided with a blind hole (11), the blind hole (11) is used for inserting a heat exchange tube to be tested, the bottom of the blind hole (11) is provided with a pressure measuring channel (111), the pressure measuring channel (111) penetrates through the connector (10) to form a pressure measuring end, the pressure measuring end is used for being detachably connected with the pressure testing pump, the bottom of the blind hole (11) is provided with a soft metal ring pad (20), the soft metal ring pad (20) can elastically or plastically deform, the outer diameter of the soft metal ring pad (20) is larger than the outer diameter of the heat exchange tube to be tested, and the inner diameter of the soft metal ring pad is smaller than the inner diameter of the heat exchange tube to be tested;
the movable ring (30), the movable ring (30) is opened and is provided with a tube hole (31) for wearing to be measured heat exchange tube, tube hole (31) with blind hole (11) coaxial setting, the movable ring (30) is equipped with first fastening assembly for with be measured heat exchange tube with movable ring (30) fixed connection, movable ring (30) pass through the roll adjustment subassembly with joint (10) are connected, the roll adjustment subassembly can be adjusted the distance between movable ring (30) with joint (10).
2. The heat exchange tube hydrostatic test device according to claim 1, wherein the distance adjusting assembly comprises a plurality of studs (40), the plurality of studs (40) are annularly surrounded by the tube hole (31) and are in sliding connection with the movable ring (30), the studs (40) are connected with one side of the joint (10) provided with a blind hole (11), the studs (40) are screwed with adjusting nuts (41), and the adjusting nuts (41) are used for extruding the movable ring (30) to be close to the joint (10).
3. The heat exchange tube hydrostatic test device according to claim 1, wherein the first fastening assembly comprises a pair of first holding rings (50) and a pair of first holding screws (51), the first holding rings (50) are arranged in the tube holes (31) and located between the wall of the tube holes (31) and the side wall of the heat exchange tube to be tested, and the first holding screws (51) are screwed into the moving ring (30) along the radial direction of the tube holes (31) and abut against the first holding rings (50) so that the first holding rings (50) hold the heat exchange tube to be tested.
4. A heat exchange tube hydrostatic test device according to claim 3, wherein the side wall of the first holding ring (50) is provided with a clamping edge (501) radially outwards in a protruding manner, the wall of the tube hole (31) is provided with a clamping ring groove (311), and the clamping edge (501) is located in the clamping ring groove (311).
5. The heat exchange tube hydrostatic test device according to claim 1, wherein the cross-sectional dimension of the pressure measuring channel (111) is smaller than the cross-sectional dimension of the blind hole (11).
6. The heat exchange tube hydrostatic test device according to claim 5, wherein a first annular groove (112) is formed in the side wall of the bottom of the blind hole (11), the soft metal ring pad (20) is clamped in the first annular groove (112), and the outer diameter of the soft metal ring pad (20) is slightly smaller than the diameter of the first annular groove (112).
7. The heat exchange tube hydrostatic test device according to claim 1, wherein the joint (10) is provided with a second fastening assembly, the second fastening assembly comprises a pair of second holding rings (52) and a pair of second holding screws (53), the second holding rings (52) are arranged in the blind holes (11) and located between the walls of the blind holes (11) and the side walls of the heat exchange tube to be tested, and the second holding screws (53) are screwed into the joint (10) along the radial direction of the blind holes (11) and abut against the second holding rings (52) so that the second holding rings (52) hold the heat exchange tube to be tested.
8. The heat exchange tube hydrostatic test device according to claim 7, wherein the orifice of the blind hole (11) is provided with a plurality of key grooves (113), the end face of the second holding ring (52) is provided with a plurality of auxiliary key grooves (521), the auxiliary key grooves (521) are in one-to-one correspondence with the key grooves (113), and the key grooves (113) are in pin joint with the corresponding auxiliary key grooves (521) through rotary pins (114).
9. The heat exchange tube hydrostatic test unit according to claim 8, wherein the joint (10) is detachably connected with an end cap (103), the end cap (103) being adapted to block the rotation pin (114).
10. The heat exchange tube hydrostatic test device according to claim 7, wherein the joint (10) comprises an inner joint (101) and an outer joint (102), the inner joint (101) is detachably connected with the pressure test pump, the second holding ring (52) is arranged in the outer joint (102), the outer joint (102) is provided with a connecting hole (1021) and an internal thread, and the outer wall of the inner joint (101) is provided with an external thread, so that the inner joint (101) can be screwed into the outer joint (102);
the inner joint (101) and one end of the butt of the bottom of the connecting hole (1021) are provided with a second annular groove (1011) around the blind hole (11), an O-shaped sealing ring (1012) and a sealing gasket (1013) are embedded in the second annular groove (1011), the outer diameter of the O-shaped sealing ring (1012) is slightly smaller than the diameter of the second annular groove (1011), the inner diameter of the O-shaped sealing ring (1012) is slightly larger than the outer diameter of the heat exchange tube to be tested, and the total thickness of the O-shaped sealing ring (1012) and the sealing gasket (1013) is larger than the groove depth of the second annular groove (1011).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320196284.0U CN219161876U (en) | 2023-02-07 | 2023-02-07 | Heat exchange tube hydrostatic test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320196284.0U CN219161876U (en) | 2023-02-07 | 2023-02-07 | Heat exchange tube hydrostatic test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219161876U true CN219161876U (en) | 2023-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320196284.0U Active CN219161876U (en) | 2023-02-07 | 2023-02-07 | Heat exchange tube hydrostatic test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219161876U (en) |
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2023
- 2023-02-07 CN CN202320196284.0U patent/CN219161876U/en active Active
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