CN104455871B - A kind of three-limb tube part - Google Patents

Abstract

The invention discloses a kind of three-limb tube part, including three way cock, external member, supporting straight pipe and О RunddichtringO, described three way cock includes that card casing section, bellmouth pipeline section, straight length, bellmouth pipeline section and straight length are installed along central axis, and card casing section is perpendicular to central axis and installs；Described card casing section is in mating connection with external member, and bellmouth pipeline section is in mating connection with supporting straight pipe；Described external member includes overcoat, cutting ferrule, tabletting, V-shaped seal ring, interior lining core；In described three way cock, pipeline section intersection is provided with inner chamber, and the inwall of inner chamber is provided with cushion；The first shoulder hole, the second shoulder hole is had in the card casing section of three way cock.The present invention has firm, the feature of good seal performance of connection, the cushion that the inwall of inner chamber is provided with, it is ensured that three way cock is the most wear-resistant, is difficult to fracture damage, is unlikely to deform, can guarantee that the reliability of connection, and service life is long.

Description

A three-way connecting pipe fitting

【Technical field】

The invention relates to the technical field of connecting pipe fittings, especially the technical field of three-way connecting pipe fittings.

【Background technique】

Pipe fittings are a general term for components that play the roles of connection, control, direction change, diversion, sealing, support, etc. in the pipeline system. They are an important part of connecting pipes to pipelines. , flange fittings and welded fittings four categories. Pipe fittings are mostly made of the same material as pipes, including elbows, flanges, tees, crosses, and reducers.

Pipe fittings are generally used to transmit fluid. In order to prevent fluid leakage, it is generally required to be seamlessly connected between pipe fittings. Install or wrap sealing material at the joint, when the pipe end is threaded, there must be a matching device, and when the flange is connected, many accessories are required.

A pipe joint with three openings is called a tee. Tee pipes are widely used in the pipe network for transporting liquids and gases, mainly for diversion and diversion of liquid flow. The joints of three-way pipe fittings are subject to a large impact force, and long-term impact may cause deformation and affect the transportation of liquid flow. ;When the tee joint is connected to the pipeline, a ferrule-type joint is usually used. The connection principle of the ferrule-type pipe joint is that the ferrule is gradually cut into the outer wall of the steel pipe by sharp and multi-blade under the action of progressively increasing tightening torque, and a reliable and sealed pipe fitting is achieved. connection purpose. The existing defect is that the joint part is prone to cracks and leakage after a period of use. In addition, the pipe joints installed outside have poor pressure bearing capacity, are easily deformed and damaged after being subjected to external forces, and the sealing performance is reduced.

【Content of invention】

The purpose of the present invention is to solve the problems in the prior art, and propose a tee connection pipe fitting, which is reliable in connection, has good sealing performance, is resistant to wear under impact, is not easy to break and damage, is not easy to deform, and has a long service life.

In order to achieve the above object, the present invention proposes a three-way connecting pipe fitting, including a three-way joint, a sleeve, a supporting straight pipe and an О-shaped sealing ring, and the three-way joint includes a tube section of a ferrule, a pipe section with a tapered hole, and a straight pipe section. The tapered hole pipe section and the straight pipe section are installed along the central axis, and the ferrule pipe section is installed perpendicular to the central axis; the ferrule pipe section is matched with the kit, and the tapered hole pipe section is matched with the matching straight pipe; the kit includes a jacket , ferrule, pressing sheet, V-shaped sealing ring, inner lining core; the junction of the inner pipe sections of the three-way joint is provided with an inner chamber, and the inner wall of the inner chamber is provided with a buffer layer; the pipe section of the three-way joint has a The first stepped hole and the second stepped hole, the straight pipe section is provided with internal threads, which can be connected with other pipe fittings; the outer wall of the tee joint is provided with reinforcing ribs, and the reinforcing ribs are located between the ferrule pipe section and the tapered hole pipe section, straight At the junction of the pipe sections, there are several reinforcement ribs. The end surface of one end of the inner lining core is installed in conjunction with the first stepped hole. The inner lining core is sequentially equipped with a V-shaped sealing ring, a pressing piece, a ferrule, and a V-shaped sealing ring. The ring is installed in cooperation with the second stepped hole of the tube section of the ferrule; the V-shaped sealing ring is connected with the pressure piece, the pressure piece is connected with the ferrule, the ferrule is equipped with a jacket, and the ferrule and the jacket are pressed and installed. The pressing piece and the jacket are also installed in cooperation with the second stepped hole of the tube section. The matching straight-through tube includes a tapered section and a connecting pipe section. The outer wall of the connecting pipe section is provided with a connecting thread, and the О-type seal is installed on the tapered section. The О-shaped sealing ring squeezes into the tapered opening to realize the sealing between the tapered opening and the tapered section; the number of О-shaped sealing rings is multiple.

As a preference, the inner liner core is press-fitted with the first stepped hole, and the V-shaped sealing ring of the inner liner core is pressed into the second stepped hole to realize the seal between the sleeve and the tube section; the first stepped hole is located at Inside of the tube section, the second stepped hole is on the outside of the tube section.

As a preference, there is a tapered opening in the pipe section of the tapered hole, the large end of the tapered opening opens to the outer end of the tee joint, and the tapered section of the straight-through pipe is matched with the tapered opening to realize the tapered opening Conical extrusion connection with conical segments.

Beneficial effects of the present invention: the present invention achieves the purpose of sealingly connecting the elbow pipe fittings through ferrule-type connection and cone-sealed connection. After connecting with the pipeline, it has the characteristics of reliable connection and good sealing performance. The buffer layer, in the working process of the tee fittings, can ensure that the tee joints are resistant to wear under impact and are not easy to break and damage. The external pressure bearing capacity of the tee joint is not easy to deform. Simple structure, easy to use, excellent manufacture, light and beautiful appearance, good performance of repeated assembly and disassembly; the added structure of pressing sheet, ferrule, V-shaped sealing ring and multiple О-shaped sealing rings can ensure the reliability of sealing, and the joint part is not easy Leakage occurs and the service life is long.

The features and advantages of the present invention will be described in detail with reference to the accompanying drawings.

【Description of drawings】

Fig. 1 is the connection schematic diagram of a kind of tee connecting pipe fitting of the present invention;

Fig. 2 is a schematic diagram of a tee joint of a tee connection pipe fitting of the present invention;

Fig. 3 is a schematic diagram of the kit connection of a tee connection pipe fitting of the present invention;

Fig. 4 is a schematic diagram of a straight-through pipe connection of a three-way connection pipe fitting according to the present invention.

In the figure: 1-tee joint, 11-tube section, 111-first stepped hole, 112-second stepped hole, 12-tapered hole pipe section, 121-tapered opening, 13-straight pipe section, 131-inner Thread, 14-inner cavity, 141-buffer layer, 15-reinforcing rib, 2-kit, 21-coat, 22-ferrule, 23-press piece, 24-V-shaped sealing ring, 25-lining core, 3- Matching straight pipe, 31-conical section, 32-connecting pipe section, 321-connecting thread, 4-О type sealing ring.

【detailed description】

Referring to Figures 1 to 4, the present invention includes a tee joint 1, a kit 2, a matching straight pipe 3 and an О-shaped sealing ring 4, and the tee joint 1 includes a tube section 11, a tapered hole section 12, a straight pipe section 13. The tapered hole pipe section 12 and the straight pipe section 13 are installed along the central axis, and the ferrule pipe section 11 is installed perpendicular to the central axis; Matching connection; the set 2 includes an outer jacket 21, a ferrule 22, a pressing piece 23, a V-shaped sealing ring 24, and a lining core 25; A buffer layer 141 is provided on the inner wall of the tee joint 1; a first stepped hole 111 and a second stepped hole 112 are opened in the tube section 11 of the tee joint 1 .

The straight pipe section 13 is provided with an internal thread 131, which can be connected with other pipe fittings; the outer wall of the tee joint 1 is provided with a reinforcing rib 15, and the reinforcing rib 15 is located between the ferrule pipe section 11, the tapered hole pipe section 12, and the straight pipe section 13. There are several reinforcing ribs 15 at the junction. The end surface of one end of the inner lining core 25 is fitted with the first stepped hole 111, and the inner lining core 25 is sequentially fitted with a V-shaped sealing ring 24, a pressing piece 23, a ferrule 22, and the V-shaped sealing ring 24 and the ferrule pipe section 11 The second stepped hole 112 is matched with the installation; the V-shaped sealing ring 24 is connected with the pressure piece 23, the pressure piece 23 is connected with the ferrule 22, and the ferrule 22 is equipped with a jacket 21, between the ferrule 22 and the jacket 21 Compression installation, the pressing piece 23 and the jacket 21 are also installed in cooperation with the second stepped hole 112 of the tube section 11 . The inner lining core 25 is press-fitted with the first stepped hole 111, and the V-shaped sealing ring 24 of the inner lining core 25 is pressed into the second stepped hole 112 to realize the sealing between the sleeve 2 and the tube section 11; the second A stepped hole 111 is located inside the tube section 11 , and a second stepped hole 112 is located outside the tube section 11 . The matching straight pipe 3 includes a tapered section 31 and a connecting pipe section 32 , and the outer wall of the connecting pipe section 32 is provided with a connecting thread 321 . There is a tapered opening 121 inside the tapered hole pipe section 12, the large end of the tapered opening 121 opens to the outer end of the tee joint 1, and the tapered section 31 of the straight-through pipe 3 is matched with the tapered opening 121 for installation. The conical extrusion connection of the conical opening 121 and the conical section 31 is realized. The О-type sealing ring 4 is installed on the tapered section 31, and the О-type sealing ring 4 squeezes into the tapered opening 121 to realize the sealing between the tapered opening 121 and the tapered section 31; the quantity of the О-shaped sealing ring 4 is Multiple.

Working process of the present invention:

During the working process of a tee connection pipe fitting of the present invention, the ferrule pipe section 11 of the tee joint 1 is tightly connected with the kit 2, and the tapered hole pipe section 12 and the matching straight-through pipe 3 are cooperatively sealed and connected, and the kit 2 is pressed into the tee In the joint 1, the inner lining core 25 will press the first stepped hole 111, the pressing piece 23 and the outer jacket 21 will press the inner wall of the tube section 11, and the V-shaped sealing ring 24 outside the inner lining core 25 realizes the inner lining core 25 and the card. The sealing between the casing sections 11; the tapered section 31 of the matching straight-through pipe 3 is installed in cooperation with the tapered opening 122 to realize the tapered extrusion connection between the tapered opening 122 and the tapered section 31. The О-shaped sealing ring 4 installed on the tapered section 31 squeezes into the tapered opening 122 to realize the sealing between the tapered opening 122 and the tapered section 31 .

The buffer layer 141 provided on the inner wall of the inner cavity 14 can ensure that the tee joint 1 is wear-resistant under impact and is not easy to break and damage during the working process of the tee fitting. The liquid flow flows smoothly, and the setting of the reinforcing rib 15 ensures the external pressure bearing capacity of the tee joint 1 and is not easily deformed.

The present invention achieves the purpose of sealingly connecting the bent-through pipe fittings through ferrule-type connection and cone-sealed connection. After connecting with the pipeline, it has the characteristics of reliable connection and good sealing performance. The buffer layer 141 provided on the inner wall of the inner cavity 14 is During the working process of the three-way pipe fittings, it can ensure that the three-way joint 1 is wear-resistant under impact and is not easy to break and damage. The external pressure bearing capacity of the tee joint 1 is not easily deformed. Simple structure, easy to use, excellent manufacture, light and beautiful appearance, good performance of repeated assembly and disassembly; the added structure of pressing piece 23, ferrule 22, V-shaped sealing ring 24 and multiple О-shaped sealing rings 4 can ensure the reliability of sealing , the combined part is not easy to leak and has a long service life.

The above-mentioned embodiment is an illustration of the present invention, not a limitation of the present invention, and any scheme after simple transformation of the present invention belongs to the protection scope of the present invention.

Claims (3)

1. A tee connection pipe fitting, characterized in that: it comprises a tee joint (1), a set (2), a supporting straight pipe (3) and an О-type sealing ring (4), and the tee joint (1) includes Tube section (11), tapered hole tube section (12), straight tube section (13), tapered hole tube section (12) and straight tube section (13) are installed along the central axis, and the tube section (11) is perpendicular to the central axis Installation; the pipe section of the ferrule (11) is matched with the sleeve (2), and the tapered hole pipe section (12) is connected with the matching straight pipe (3); the sleeve (2) includes the outer jacket (21), the clamp Sleeve (22), pressing sheet (23), V-shaped sealing ring (24), inner lining core (25); said tee joint (1) is provided with an inner chamber (14) at the junction of the inner pipe sections, and the inner chamber (14 ) is provided with a buffer layer (141) on the inner wall; a first stepped hole (111) and a second stepped hole (112) are opened in the tube section (11) of the tee joint (1), and the straight pipe section (13 ) is provided with an internal thread (131), which can be connected with other pipe fittings; the outer wall of the three-way joint (1) is provided with a reinforcing rib (15), and the reinforcing rib (15) is located between the tube section of the tube (11) and the pipe section of the tapered hole (12), the junction of the straight pipe section (13), the number of reinforcing ribs (15) is several, the end face of one end of the inner lining core (25) is installed with the first stepped hole (111), and the inner lining core ( 25) The V-shaped sealing ring (24), pressure piece (23), and ferrule (22) are sequentially set on the top, and the V-shaped sealing ring (24) is installed in cooperation with the second stepped hole (112) of the ferrule pipe section (11) ; The V-shaped sealing ring (24) is connected with the pressing piece (23), and the pressing piece (23) is connected with the ferrule (22), and the ferrule (22) is equipped with an overcoat (21), and the ferrule (22) ) and the overcoat (21), the pressing piece (23) and the overcoat (21) are also installed in cooperation with the second stepped hole (112) of the tube section (11), and the matching straight pipe (3) includes The conical section (31) and the connecting pipe section (32), the connecting thread (321) is provided on the outer wall of the connecting pipe section (32), the О-type sealing ring (4) is installed on the said conical section (31), and the О-type sealing The ring (4) squeezes into the tapered opening (121) to realize the sealing between the tapered opening (121) and the tapered section (31); the number of О-shaped sealing rings (4) is multiple. 2. A tee connection pipe fitting according to claim 1, characterized in that: the inner lining core (25) is squeezed and fitted with the first stepped hole (111), and the V-shaped seal of the inner lining core (25) The ring (24) is pressed into the second stepped hole (112) to realize the seal between the sleeve (2) and the tube section (11); the first stepped hole (111) is located inside the tube section (11), The second stepped hole (112) is located on the outside of the tube section (11). 3. A three-way connection pipe fitting according to claim 1, characterized in that: a tapered opening (121) is opened in the tapered hole pipe section (12), and the large end of the tapered opening (121) opens to The outer end of the three-way joint (1) is matched with the tapered section (31) of the straight-through pipe (3) and the tapered opening (121) for installation, so that the tapered opening (121) and the tapered section (31) are matched. shaped extrusion connection.