CN219475219U

CN219475219U - Simple pipe fitting pressure testing tool

Info

Publication number: CN219475219U
Application number: CN202223235462.0U
Authority: CN
Inventors: 周一飞; 于庆海
Original assignee: Changzhou Ruikai Chemical Equipment Co ltd
Current assignee: Changzhou Ruikai Chemical Equipment Co ltd
Priority date: 2022-12-02
Filing date: 2022-12-02
Publication date: 2023-08-04
Anticipated expiration: 2032-12-02

Abstract

The utility model discloses a simple pipe fitting pressure testing tool, which comprises a pipe body and a pressure gauge, wherein pressure testing mechanisms are arranged at the left end and the right end of the pipe body, each pressure testing mechanism comprises a core rod, an expansion column, a compression ring, a compression nut and an air pipe joint, a core rod tail section is arranged in the middle of the inside of the core rod, the core rod sequentially comprises the core rod tail section, a core rod thread section, the middle part of the core rod and the front part of the core rod from left to right, a gas channel is arranged in the core rod, the compression ring is sleeved outside the core rod thread section, and the compression nut is in threaded connection with the surface of the core rod thread section. The simple pipe fitting pressure testing tool pressure testing mechanism is composed of only four parts, is very simple in structure and low in manufacturing cost, is very suitable for overhauling equipment pipelines and the like under the condition of lacking large-scale instruments on site, and is suitable for pressure testing of pipes of various sizes through the design of the expansion column.

Description

Simple pipe fitting pressure testing tool

Technical Field

The utility model relates to the technical field of simple pipe fitting pressure test tools, in particular to a simple pipe fitting pressure test tool.

Background

In our daily construction engineering, the pipe is an indispensable material, and we commonly have upper (lower) water supply pipes, rainwater pipes, gas pipes, cable ducts, heating pipes and the like, and common materials include plastic pipes (PVC pipes, PV pipes, PPR pipes and the like), galvanized pipes, copper pipes and the like, and in industrial and agricultural production, the pipe is also an important material, such as an agricultural irrigation pipe, hydraulic pipes in various mechanical equipment and the like; and various piping systems in industrial facilities, pipes for thermal engineering (boiler tubes, heat exchange tubes, etc.), pipes for oil drilling, etc.

After the pipe is generated, the pressure test is needed, whether the pressure born by the pipe meets the requirement or not is detected, the existing tool for testing the pressure of the pipe has the problems of low applicability and inconvenient operation when in use, and then the simple pipe pressure test tool is provided.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a simple pipe fitting pressure test tool, which solves the problems of low applicability and troublesome operation of the existing pressure test tool.

In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a simple and easy pipe fitting pressure testing instrument includes tubular product body and manometer, both ends all are provided with pressure testing mechanism about the tubular product body, pressure testing mechanism includes plug, inflation post, clamp ring, gland nut and tracheal joint, the plug tail section has been seted up to the inside centre department of plug, the plug includes plug tail section, plug screw thread section, plug middle part and plug front portion from left to right in proper order, gas passage has been seted up to the inside of plug, tracheal joint sets up in plug tail section department, the outside at plug screw thread section is established to the clamp ring cover, the surface threaded connection of gland nut and plug screw thread section, gland nut is located the left side of clamp ring, the outside at the plug middle part is established to the inflation post cover.

Preferably, the diameter of the front part of the core rod is slightly smaller than the diameter of the pipe body, and the diameter of the middle part of the core rod is smaller than the diameter of the expansion column.

Preferably, the inner hole and the outer circle of the expansion column are formed in a mechanical finish machining mode, rubber or polytetrafluoroethylene elastic materials can be selected, the inner diameter of the compression ring is larger than the inner hole diameter of the expansion column, and the outer diameter of the compression ring is smaller than the outer diameter of the expansion column.

Preferably, the tracheal joint comprises a fixed sleeve, the fixed sleeve is fixedly connected with the surface of the tail section of the mandrel, a circular groove is formed in the middle position of the inner part of the fixed sleeve, a circular groove is formed in the inner wall of the fixed sleeve, and the diameter of the circular groove is larger than that of the circular groove.

Preferably, a plurality of return springs are fixedly connected to the right side of the inner wall of the circular groove at equal intervals, a pressing sleeve is fixedly connected to the other end of the return spring, and the outer surface of the pressing sleeve is in sliding connection with the inner surface of the fixing sleeve.

Preferably, the inner wall equidistance sliding connection of fixed cover inner ring has a plurality of sector plates, the sector plate runs through the inner ring of fixed cover and extends to the inside of circular slot, the internal surface equidistance of pressing the cover leaves and is equipped with a plurality of recesses, the recess cooperatees with the sector plate.

Advantageous effects

The utility model provides a simple pipe fitting pressure testing tool. Compared with the prior art, the method has the following beneficial effects:

1. this simple and easy pipe fitting pressure testing instrument includes plug, expansion column, clamp ring, gland nut and tracheal joint through pressure testing mechanism, and pressure testing mechanism only has five parts to constitute, and the structure is very simple, and cost of manufacture is cheap, lacks under the circumstances of large-scale apparatus on the scene, is especially suitable for maintenance equipment pipeline etc. in addition through the design of expansion column for this instrument is applicable to the tubular product of multiple size and carries out the pressure testing.

2. This simple and easy pipe fitting pressure testing instrument includes fixed cover through the air pipe joint, and the circular slot has been seted up to fixed cover and the fixed surface connection of core rod tail section, the inside intermediate position of fixed cover, and circular slot has been seted up to the inside of fixed cover inner wall, connects trachea or valve through the air pipe joint when pressure testing instrument uses, can accomplish the connection and the dismantlement to trachea and valve fast through pressing the pressure cover, has improved the convenience when pressure testing instrument uses.

Drawings

FIG. 1 is a schematic view of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is a cross-sectional view of a mandrel of the present utility model;

FIG. 4 is a cross-sectional view of the tracheal fitting of the present utility model;

figure 5 is a side view of the tracheal tube of the present utility model.

In the figure: 1. a pipe body; 2. a pressure gauge; 3. a pressure test mechanism; 31. a core rod; 311. a mandrel tail section; 312. a mandrel thread section; 313. the middle part of the core rod; 314. a gas channel; 315. the front part of the core rod; 32. an expansion column; 33. a clamp ring; 34. a compression nut; 35. an air pipe joint; 351. a fixed sleeve; 352. a circular groove; 353. circular ring grooves; 354. a return spring; 355. pressing the sleeve; 356. a sector plate; 357. a groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

This simple and easy pipe fitting pressure testing instrument provides two kinds of technical scheme:

a first embodiment is shown in fig. 1-3: including tubular product body 1 and manometer 2, tubular product body 1 both ends all are provided with pressure testing mechanism 3 about, pressure testing mechanism 3 includes plug 31, expansion column 32, compression ring 33, gland nut 34 and tracheal joint 35, plug tail section 311 has been seted up to the inside middle department of plug 31, plug 31 includes plug tail section 311 from left to right in proper order, plug screw thread section 312, plug middle part 313 and plug front portion 315, gas passage 314 has been seted up to the inside of plug 31, tracheal joint 35 sets up in plug tail section 311 department, compression ring 33 cover is established in the outside of plug screw thread section 312, gland nut 34 and the surface threaded connection of plug screw thread section 312, gland nut 34 is located the left side of compression ring 33, the outside at plug middle part 313 is established to the expansion column 32 cover, plug front portion 315 diameter is less than the diameter of tubular product body 1, the diameter at plug middle part 313 is slightly less than the diameter of expansion column 32, expansion column 32 hole and excircle adopt the shaping of mechanical finish machining mode, and the material can select rubber or polytetrafluoroethylene to take elastic material, the internal diameter of compression ring 33 is greater than the hole diameter of expansion column 32, and the external diameter of expansion column 32 is less than the external diameter of expansion column 32.

The pressure testing mechanism is composed of five parts, is very simple in structure and low in manufacturing cost, is very suitable for overhauling equipment pipelines and the like under the condition of lacking large-scale instruments on site, and is suitable for pressure testing of pipes with various sizes through the design of the expansion column.

The second embodiment is shown in fig. 1, 4 and 5, and differs from the first embodiment mainly in that: the tracheal joint 35 comprises a fixed sleeve 351, the fixed sleeve 351 is fixedly connected with the surface of the mandrel tail section 311, a circular groove 352 is formed in the middle position inside the fixed sleeve 351, a circular groove 353 is formed in the inner wall of the fixed sleeve 351, the diameter of the circular groove 353 is larger than that of the circular groove 352, a plurality of return springs 354 are fixedly connected to the right side of the inner wall of the circular groove 353 at equal intervals, a pressing sleeve 355 is fixedly connected to the other end of the return springs 354, the outer surface of the pressing sleeve 355 is slidably connected with the inner surface of the fixed sleeve 351, a plurality of sector plates 356 are slidably connected to the inner wall of the inner ring of the fixed sleeve 351 at equal intervals, the sector plates 356 penetrate through the inner ring of the fixed sleeve 351 and extend to the inner portion of the circular groove 352, a plurality of grooves 357 are formed in the inner surface of the pressing sleeve 355 at equal intervals, and the grooves 357 are matched with the sector plates 356.

When the pressure testing tool is used, the air pipe or the valve is connected through the air pipe connector 35, and the air pipe and the valve can be connected and detached quickly by pressing the pressure sleeve 355, so that the convenience of the pressure testing tool in use is improved.

When the pressure testing device is used, two ends of the pipe body 1 are plugged into the pressure testing mechanism 3 to expose a section of expansion column 32, the tail part of the left pressure testing mechanism 3 is connected with a three-way valve through an air pipe joint 35, when the three-way valve is connected, a pressure sleeve 355 is pressed in to enable a sector plate 356 to enter a groove 357, at the moment, the air outlet end of the three-way valve is plugged into a circular groove 352, the pressure sleeve 355 is loosened, the pressure sleeve 355 is reset under the action of a reset spring 354, so that a plurality of sector plates 356 are tightly pressed to the outside of the air outlet end of the three-way valve, the installation is completed, one side of the three-way valve is connected with a compressed air source, and the other side is externally connected with atmosphere; when the pressure gauge 2 is connected to the tail of the right pressure testing mechanism 3 for working, the compression ring 33 is firstly tightly attached to the expansion column 32, then the compression nut 34 is slowly tightly screwed, so that the expansion column 32 expands and is tightly attached to the inner wall of the pipe body 1; closing an atmospheric port of the three-way valve, opening an air source valve, slowly introducing compressed air, after the pressure gauge 2 indicates a specified test pressure and is stable, closing an air source, maintaining pressure for 30-60 seconds according to a test pressure process file, opening a valve port of the three-way valve which is externally opened to the atmosphere after the pressure maintaining is finished, releasing a compression ring 33, taking down a pressure test mechanism 3 at two ends of a pipe body 1, completing a pressure test process, if the pressure cannot be maintained in the pressure test process, firstly performing an air tightness test on two ends of the pipe body 1, spraying soapy water at pipe ends, and generating no bubbles, wherein the end of the pipe body 1 is free from leakage, and if bubbles are generated at the end of the pipe body 1, the expansion column 32 is not sealed, the compression ring 33 is required to be screwed again, and then performing the pressure test process.

According to experimental data, the utility model is suitable for pressure test and leakage test of pipe fittings with nominal specification not more than DN100 and pressure test below 2.5 MPa.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a simple and easy pipe fitting pressure testing instrument, includes tubular product body (1) and manometer (2), its characterized in that: both ends all are provided with pressure testing mechanism (3) about tubular product body (1), pressure testing mechanism (3) are including plug (31), expansion column (32), clamp ring (33), gland nut (34) and tracheal tube connect (35), plug tail section (311) have been seted up to department in the middle of the inside of plug (31), plug (31) are from left to right including plug tail section (311), core thread section (312), core middle part (313) and plug front portion (315) in proper order, gas passage (314) have been seted up to the inside of plug (31), tracheal tube connect (35) set up in plug tail section (311) department, the outside at plug thread section (312) is established to clamp ring (33) cover, gland nut (34) and the surface threaded connection of plug thread section (312), gland nut (34) are located the left side of clamp ring (33), expansion column (32) cover is established in the outside of core thread section (313).

2. The simple pipe fitting pressure testing tool according to claim 1, wherein: the diameter of the front part (315) of the core rod is slightly smaller than that of the pipe body (1), and the diameter of the middle part (313) of the core rod is slightly smaller than that of the expansion column (32).

3. The simple pipe fitting pressure testing tool according to claim 1, wherein: the inner hole and the outer circle of the expansion column (32) are formed in a mechanical finish machining mode, rubber or polytetrafluoroethylene elastic materials can be selected as materials, the inner diameter of the compression ring (33) is larger than the inner hole diameter of the expansion column (32), and the outer diameter of the compression ring is smaller than the outer diameter of the expansion column (32).

4. A simple pipe fitting pressure test tool as claimed in claim 3 wherein: the tracheal joint (35) comprises a fixing sleeve (351), the fixing sleeve (351) is fixedly connected with the surface of the tail section (311) of the mandrel, a circular groove (352) is formed in the middle of the inside of the fixing sleeve (351), a circular groove (353) is formed in the inner wall of the fixing sleeve (351), and the diameter of the circular groove (353) is larger than that of the circular groove (352).

5. The simple and easy pipe fitting pressure testing tool of claim 4, wherein: the right side equidistance fixedly connected with a plurality of reset springs (354) of ring groove (353) inner wall, the other end fixedly connected with of reset spring (354) presses cover (355), the surface of pressing cover (355) and the internal surface sliding connection of fixed cover (351).

6. The simple and easy pipe fitting pressure testing tool of claim 5, wherein: the inner wall equidistance sliding connection of fixed cover (351) inner ring has a plurality of sector plates (356), sector plate (356) run through the inner ring of fixed cover (351) and extend to the inside of circular slot (352), the internal surface equidistance of pressing cover (355) leaves and is equipped with a plurality of recesses (357), recess (357) cooperate with sector plate (356).