CN111122055A - Pressure test tool for heat exchange tube - Google Patents
Pressure test tool for heat exchange tube Download PDFInfo
- Publication number
- CN111122055A CN111122055A CN202010012616.6A CN202010012616A CN111122055A CN 111122055 A CN111122055 A CN 111122055A CN 202010012616 A CN202010012616 A CN 202010012616A CN 111122055 A CN111122055 A CN 111122055A
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- CN
- China
- Prior art keywords
- heat exchange
- exchange tube
- pressure testing
- end cover
- mandrel
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/022—Test plugs for closing off the end of a pipe
Abstract
The invention relates to a pressure test tool for a heat exchange tube, which comprises: dabber, nonstandard nut, steering handle, ha fu formula gland, end cover, sleeve and inner tube, nonstandard nut includes: nut body and annular convex part, the outer wall of annular convex part is equipped with the draw-in groove to the indent, the end cover sets up in telescopic one of them free end, telescopic another free end is equipped with card fender portion, the inner wall of nut body is equipped with the internal thread, the outer wall of dabber is equipped with the external screw thread section with internal thread matched with, huff formula gland install in annular convex part the draw-in groove and with the end cover between be connected through the mounting, the one end and the dabber fixed connection of inner tube, the section of thick bamboo that expands of split formula is installed to the other end of inner tube, the outer wall department of the section of thick bamboo that expands of split formula is equipped with cone section, be equipped with the pressure testing liquid passageway that the axial runs through in the dabber to greatly reduced manufacturing cost.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of heat exchange tube pressure testing devices, in particular to a pressure testing tool for a heat exchange tube.
[ background of the invention ]
When the heat exchange tube pressure testing, need use the end cap to plug up the mouth of pipe of heat exchange tube, end cap structure among the prior art is very simple, adopts the stopper that diameter and heat exchange tube suited promptly, during the pressure testing, with the mouth of pipe of stopper income heat exchange tube, then carry out hydrostatic test for fetching water in the heat exchange tube through the water pump, the defect of this kind of stopper lies in: when the pressure in the heat exchange tube exceeds 40Mpa, the plug is easy to fall off from the tube opening of the heat exchange tube, so in order to solve the technical problem, a pressure test tool for the heat exchange tube is developed by those skilled in the art later, please refer to chinese patent No. 201610912239.5, which includes: mandrel, sleeve, the section of thick bamboo that expands of split formula, end cover, with mandrel fixed connection's limit stop, set up handle and the cover between limit stop and end cover and locate the spring on the mandrel, be equipped with the cone section on the outer wall of the section of thick bamboo that expands of split formula, the handle includes handle body and handle card fender portion, the handle body is located telescopic outside, on the mandrel was located to handle card fender portion cover, its theory of operation was: the handle body is pressed towards the sleeve direction, so that the outer end of the handle blocking part is upwards tilted and blocked on the limit stop block, and one end of the handle blocking part close to the handle body presses the end cover downwards, at the moment, the spring is compressed, thereby driving the end cover and the sleeve to move downwards and axially relative to the core rod (i.e. to move towards the small-diameter end of the cone segment) until the blocking part on the sleeve is separated from the split-type expansion cylinder, at the moment, the heat exchange tube can be conveniently arranged in the split-type expansion cylinder, then the handle body is loosened, the compressed spring is reset, under the action of the elasticity of the spring, the end cover and the sleeve move upwards and axially relative to the core rod (i.e. move towards the large-diameter end of the cone section), at the moment, the blocking part on the sleeve is tightly clamped on the outer wall of the cone section of the split expansion cylinder, thereby make the section of thick bamboo that expands of lamella formula and heat exchange tube expand tightly to can carry out the water pressure test of heat exchange tube. The heat exchange tube pressure test tool with the structure has the following defects: 1. the structure is more complex, and the manufacturing cost is higher; 2. if the elastic potential energy of the spring is too large, the handle body can be pressed still; 3. the spring belongs to the wearing parts, and needs to be replaced after being used for a period of time, which is very troublesome.
Therefore, it is necessary to provide a pressure testing tool for heat exchange tubes, which solves the above technical problems.
[ summary of the invention ]
In order to solve the technical problems, the invention aims to provide a pressure test tool for a heat exchange tube, which is simple in structure and can avoid using a spring.
In order to achieve the purpose, the invention adopts the technical scheme that: a heat exchange tube pressure testing frock includes: dabber, nonstandard nut, steering handle, ha fu formula gland, end cover, sleeve and inner tube, steering handle and nonstandard nut fixed connection, the nonstandard nut includes: the nut comprises a nut body and an annular convex part protruding from the end face of the nut body, wherein the nut body and the annular convex part are sleeved on a mandrel, the outer wall of the annular convex part is inwards concavely provided with a clamping groove, the sleeve and an end cover are sleeved on the mandrel, the end cover is arranged at one free end of the sleeve, the other free end of the sleeve is provided with a blocking part, the end cover is connected with the sleeve through threads, one end of the end cover is provided with an accommodating cavity for accommodating the annular convex part, the inner wall of the nut body is provided with internal threads, the outer wall of the mandrel is provided with an external thread section matched with the internal threads of the nut body, a Haff type gland is arranged in the clamping groove of the annular convex part and connected with the end cover through a plurality of fixing parts, one end of an inner cylinder is fixedly connected with the mandrel, the other end of the inner cylinder is provided with a split type expansion cylinder, and the outer, the outer wall diameter of cone section is diminished gradually to the section of thick bamboo direction that expands of split formula by the inner tube, the central authorities that the section of thick bamboo expands of split formula form first heat exchange tube and accept the chamber, it accepts the chamber to be equipped with the second heat exchange tube in the inner tube, be equipped with the pressure testing liquid passageway that the axial runs through in the dabber, chamber, second heat exchange tube are acceptd to first heat exchange tube and are acceptd chamber and pressure testing liquid passageway three and run through each other, it accepts the chamber to form pressure testing liquid between end cover and the inner tube, the spindle is equipped with a plurality of through hole that is used for intercommunication pressure testing liquid and accepts chamber and pressure testing liquid passageway, be equipped with first sealing washer between end cover and the dabber, be equipped with the second sealing washer between end cover and the sleeve, be equipped with at least one fourth sealing washer between inner tube and the.
Preferably, the pressure test device for the heat exchange tube is further provided with: the one end that the inner tube is used for installing the section of thick bamboo that expands of split formula is equipped with the recess to the indent, the section of thick bamboo that expands of split formula is equipped with the lug with recess matched with on the inner tube.
Preferably, the pressure test device for the heat exchange tube is further provided with: the free end of dabber is equipped with the boss to the evagination, be equipped with the mounting groove that is used for installing this boss in the inner tube, the one end welding of inner tube has the retaining ring with the boss looks butt of dabber.
Preferably, the pressure test device for the heat exchange tube is further provided with: the inner wall of the split type expansion cylinder is provided with sawtooth lines.
Preferably, the pressure test device for the heat exchange tube is further provided with: half formula gland includes first semicircular gland and second semicircular gland.
Preferably, the pressure test device for the heat exchange tube is further provided with: the steering handle is welded with the nut body of the non-standard nut.
Preferably, the pressure test device for the heat exchange tube is further provided with: the blocking part extends inwards from the inner wall of the sleeve.
Preferably, the pressure test device for the heat exchange tube is further provided with: a plurality of through holes in the mandrel are uniformly distributed in the circumferential direction of the mandrel and are perpendicular to a pressure test liquid channel in the mandrel.
Preferably, the pressure test device for the heat exchange tube is further provided with: the water pump is characterized in that an adapter connected with the water pump is further sleeved on the mandrel, and the adapter is connected with the mandrel through threads.
Preferably, the pressure test device for the heat exchange tube is further provided with: the number of the fourth sealing rings is two.
Compared with the prior art, the invention has the following beneficial effects: the pressure test tool for the heat exchange tube has a simple structure, is convenient to install, and can drive the sleeve to axially move relative to the mandrel by rotating the steering handle, so that a spring can be avoided, the manufacturing cost is greatly reduced, and the structural stability is improved.
[ description of the drawings ]
Fig. 1 is a schematic structural diagram of a pressure test tool for a heat exchange tube in the invention.
Fig. 2 is a schematic structural view of the mandrel of the present invention.
Fig. 3 is a schematic structural view of three split-type expansion pipes in the present invention.
Fig. 4 is a schematic structural view of one of the split expanding tubes of the present invention.
FIG. 5 is a schematic view of the inner barrel of the present invention.
Fig. 6 is a schematic structural view of a non-standard nut according to the present invention.
Fig. 7 is a schematic structural diagram of the half gland of the present invention.
In fig. 1 to 7: 1. the pressure test device comprises a mandrel, 10, an external thread section, 11, a boss, 12, a pressure test liquid channel, 13, a through hole, 2, a non-standard nut, 20, a nut body, 200, an internal thread, 21, an annular convex part, 210, a clamping groove, 211, a step surface, 3, a steering handle, 4, a half-type gland, 40, a first semicircular gland, 41, a second semicircular gland, 42, a fixing part, 5, an end cover, 50, a containing cavity, 51, a pressure test liquid containing cavity, 52, a first sealing ring, 53, a second sealing ring, 6, a sleeve, 60, a clamping part, 7, an inner cylinder, 70, a mounting groove, 71, a retaining ring, 72, a groove, 73, a second heat exchange tube containing cavity, 730, a fourth sealing ring, 74, a third sealing ring, 8, a conversion joint, 9, a split type expansion cylinder, 90, a lug, 91, a cone section, 92, a first heat exchange tube containing cavity, 93 and sawtooth grains.
[ detailed description ] embodiments
The pressure test tool of the heat exchange tube according to the present invention is further described in detail by the following specific examples.
Referring to fig. 1 to 7, a heat exchange tube pressure test tool comprises: the device comprises a longitudinal mandrel 1, a non-standard nut 2, a steering handle 3, a half type gland 4, an end cover 5, a sleeve 6 and an inner cylinder 7, wherein the half type gland 4 comprises a first semicircular gland 40 and a second semicircular gland 41. The water pump is characterized in that an adapter 8 connected with the water pump is further sleeved above the mandrel 1, and the adapter 8 is connected with the mandrel 1 through threads.
The non-standard nut 2 includes: nut body 20 reaches the protruding annular convex part 21 that stretches from nut body 20's terminal surface, steering handle 3 welds with nut body 20 mutually, nut body 20 and annular convex part 21 all overlap and locate on dabber 1, the outer wall of annular convex part 21 is inwards sunken to be equipped with draw-in groove 210, dabber 1 is all located to sleeve 6 and end cover 5, end cover 5 sets up in one of them free end of sleeve 6, another free end of sleeve 6 is equipped with blocking portion 60, blocking portion 60 inwards extends from the inner wall of sleeve 6.
The end cover 5 is connected with the sleeve 6 through screw threads, one end of the end cover 5 is provided with an accommodating cavity 50 for accommodating the annular convex part 21, the inner wall of the nut body 20 is provided with an internal thread 200, the outer wall of the mandrel 1 is provided with an external thread section 10 matched with the internal thread 200 of the nut body 20, the half-type gland 4 is arranged in the clamping groove 210 of the annular convex part 21 and is connected with the end cover 5 through a plurality of fixing parts 42, in the present embodiment, the fixing member 42 is a slotted countersunk head screw, one end of the inner cylinder 7 is fixedly connected to the mandrel 1, in the present embodiment, a boss 11 is provided at the free end of the mandrel 1 in an outward protruding manner, an installation groove 70 for installing the boss 11 is provided in the inner cylinder 7, and a retainer ring 71 which is abutted to the boss 11 of the mandrel 1 is welded at one end of the inner cylinder 7, so that the inner cylinder 7 is fixedly connected with the mandrel 1. Three split type expansion barrels 9 are installed at the other end of the inner barrel 7, and in the embodiment, the split type expansion barrels 9 and the inner barrel 7 are specifically installed in the following way: the end of the inner cylinder 7 for installing the split-type expansion cylinder 9 is inwards provided with a groove 72, the split-type expansion cylinder 9 is provided with a lug 90 matched with the groove 72 on the inner cylinder 7, the split-type expansion cylinder 9 is not separated from the inner cylinder 7 due to the positioning of the outer sleeve 6 after the split-type expansion cylinder 9 is installed on the inner cylinder 7, the outer wall of the split-type expansion cylinder 9 is provided with a cone section 91, the diameter of the outer wall of the cone section 91 is gradually reduced from the inner cylinder 7 to the split-type expansion cylinder 9, the center of the split-type expansion cylinder 9 forms a first heat exchange tube accommodating cavity 92, the inner cylinder 7 is internally provided with a second heat exchange tube accommodating cavity 73, the mandrel 1 is internally provided with a pressure test liquid channel 12 which axially penetrates through, the first heat exchange tube accommodating cavity 92, the second heat exchange tube accommodating cavity 73 and the pressure test liquid channel 12 are mutually penetrated, and a liquid accommodating cavity 51 is formed between the end cover 5 and the inner cylinder 7, be equipped with a plurality of through hole 13 that is used for intercommunication pressure testing liquid to accept chamber 51 and pressure testing liquid passageway 12 on the dabber 1, through hole 13 evenly arranges along the circumferencial direction of dabber 1 and is perpendicular setting with pressure testing liquid passageway 12 in the dabber 1. The inner wall of the split expansion cylinder 9 is provided with sawtooth lines 93, so that the friction force between the split expansion cylinder 9 and the heat exchange tube can be increased.
A first sealing ring 52 is arranged between the end cover 5 and the mandrel 1, a second sealing ring 53 is arranged between the end cover 5 and the sleeve 6, a third sealing ring 74 is arranged between the inner tube 7 and the sleeve 6, at least one fourth sealing ring 730 is arranged in the second heat exchange tube accommodating cavity 73 of the inner tube 7, and in the embodiment, the number of the fourth sealing rings 730 is two.
The working principle of the pressure test tool for the heat exchange tube is as follows: when the rotary steering handle 3 moves downwards, the end part of the annular convex part 21 of the non-standard nut 2 props against the end cover 5, so as to drive the end cover 5, the half-type gland 4 and the sleeve 6 to move downwards and axially relative to the mandrel 1 as a whole until the blocking part 60 of the sleeve 6 is separated from the split type expansion cylinder 9, at the moment, the heat exchange tube can be conveniently arranged in the first heat exchange tube accommodating cavity 92 and the second heat exchange tube accommodating cavity 73 or taken out from the first heat exchange tube accommodating cavity 92 and the second heat exchange tube accommodating cavity 73, when the rotary steering handle 3 moves upwards, the step surface 211 on the annular convex part 21 props against the bottom surface of the half-type gland 4, so as to drive the half-type gland 4, the end cover 5 and the sleeve 6 to move upwards and axially relative to the mandrel 1 as a whole, at the blocking part 60 on the sleeve 6 is tightly clamped on the outer wall of the cone section 91 of the split type expansion cylinder 9, thereby make the section of thick bamboo 9 of expanding of split type and the heat exchange tube expand tightly to can carry out the water pressure test of heat exchange tube. Water pumped by the water pump enters the pressure test liquid channel 12 in the center of the mandrel 1 through the adapter 8, part of water in the pressure test liquid channel 12 enters the pressure test liquid accommodating cavity 51 through the through hole 13 on the mandrel 1, part of water enters the heat exchange tube, water pressure in the pressure test liquid accommodating cavity 51 is increased continuously along with continuous entering of water, the water pressure can act on the end cover 5 and the sleeve 6, the end cover 5 and the sleeve 6 move towards the large-diameter direction of the cone section 91, and the clamping between the clamping part 60 of the sleeve 6 and the split type expansion tube 9 is firmer, and the stability is higher.
In conclusion, the pressure test tool for the heat exchange tube has a simple structure and is convenient to install, and the sleeve can be driven to axially move relative to the mandrel by rotating the steering handle, so that a spring is avoided, the manufacturing cost is greatly reduced, and the structural stability is improved.
The above-mentioned embodiments are merely illustrative of the principles and effects of the present invention, and some embodiments may be used, not restrictive; it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications belong to the protection scope of the present invention.
Claims (10)
1. The utility model provides a heat exchange tube pressure testing frock which characterized in that includes: dabber, nonstandard nut, steering handle, ha fu formula gland, end cover, sleeve and inner tube, steering handle and nonstandard nut fixed connection, the nonstandard nut includes: the nut comprises a nut body and an annular convex part protruding from the end face of the nut body, wherein the nut body and the annular convex part are sleeved on a mandrel, the outer wall of the annular convex part is inwards concavely provided with a clamping groove, the sleeve and an end cover are sleeved on the mandrel, the end cover is arranged at one free end of the sleeve, the other free end of the sleeve is provided with a blocking part, the end cover is connected with the sleeve through threads, one end of the end cover is provided with an accommodating cavity for accommodating the annular convex part, the inner wall of the nut body is provided with internal threads, the outer wall of the mandrel is provided with an external thread section matched with the internal threads of the nut body, a Haff type gland is arranged in the clamping groove of the annular convex part and connected with the end cover through a plurality of fixing parts, one end of an inner cylinder is fixedly connected with the mandrel, the other end of the inner cylinder is provided with a split type expansion cylinder, and the outer, the outer wall diameter of cone section is diminished gradually to the section of thick bamboo direction that expands of split formula by the inner tube, the central authorities that the section of thick bamboo expands of split formula form first heat exchange tube and accept the chamber, it accepts the chamber to be equipped with the second heat exchange tube in the inner tube, be equipped with the pressure testing liquid passageway that the axial runs through in the dabber, chamber, second heat exchange tube are acceptd to first heat exchange tube and are acceptd chamber and pressure testing liquid passageway three and run through each other, it accepts the chamber to form pressure testing liquid between end cover and the inner tube, the spindle is equipped with a plurality of through hole that is used for intercommunication pressure testing liquid and accepts chamber and pressure testing liquid passageway, be equipped with first sealing washer between end cover and the dabber, be equipped with the second sealing washer between end cover and the sleeve, be equipped with at least one fourth sealing washer between inner tube and the.
2. The heat exchange tube pressure testing tool of claim 1, characterized in that: the one end that the inner tube is used for installing the section of thick bamboo that expands of split formula is equipped with the recess to the indent, the section of thick bamboo that expands of split formula is equipped with the lug with recess matched with on the inner tube.
3. The heat exchange tube pressure testing tool of claim 1, characterized in that: the free end of dabber is equipped with the boss to the evagination, be equipped with the mounting groove that is used for installing this boss in the inner tube, the one end welding of inner tube has the retaining ring with the boss looks butt of dabber.
4. The heat exchange tube pressure testing tool of claim 1, characterized in that: the inner wall of the split type expansion cylinder is provided with sawtooth lines.
5. The heat exchange tube pressure testing tool of claim 1, characterized in that: half formula gland includes first semicircular gland and second semicircular gland.
6. The heat exchange tube pressure testing tool of claim 1, characterized in that: the steering handle is welded with the nut body of the non-standard nut.
7. The heat exchange tube pressure testing tool of claim 1, characterized in that: the blocking part extends inwards from the inner wall of the sleeve.
8. The heat exchange tube pressure testing tool of claim 1, characterized in that: a plurality of through holes in the mandrel are uniformly distributed in the circumferential direction of the mandrel and are perpendicular to a pressure test liquid channel in the mandrel.
9. The heat exchange tube pressure testing tool of claim 1, characterized in that: the water pump is characterized in that an adapter connected with the water pump is further sleeved on the mandrel, and the adapter is connected with the mandrel through threads.
10. The heat exchange tube pressure testing tool of claim 1, characterized in that: the number of the fourth sealing rings is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010012616.6A CN111122055A (en) | 2020-01-07 | 2020-01-07 | Pressure test tool for heat exchange tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010012616.6A CN111122055A (en) | 2020-01-07 | 2020-01-07 | Pressure test tool for heat exchange tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111122055A true CN111122055A (en) | 2020-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010012616.6A Pending CN111122055A (en) | 2020-01-07 | 2020-01-07 | Pressure test tool for heat exchange tube |
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| Country | Link |
|---|---|
| CN (1) | CN111122055A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023102055A1 (en) * | 2021-11-30 | 2023-06-08 | Lausch John C | Plugs for anchoring within equipment and methods of use for pressure testing |
-
2020
- 2020-01-07 CN CN202010012616.6A patent/CN111122055A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023102055A1 (en) * | 2021-11-30 | 2023-06-08 | Lausch John C | Plugs for anchoring within equipment and methods of use for pressure testing |
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