Elbow pipe fitting resistant to erosion corrosion

Abstract

The utility model relates to the technical field of pipe fittings, in particular to an anti-erosion corrosion elbow pipe fitting which comprises an elbow pipe, connectors are fixed to the two ends of the elbow pipe, plug pipes are inserted into the connectors, a necking pipe is integrally formed at one end of each plug pipe, a guide-in pipe is integrally formed at one end of each necking pipe, and a blocking piece is fixed to one end of each guide-in pipe. The elbow pipe fitting has the advantages that one end of the plug pipe is designed to be the integrally-formed necking pipe, so that fluid can bear resistance of the slope when entering the elbow pipe fitting, and speed reduction is achieved. By means of the design, the scouring force of fluid on the inner wall of the pipe fitting is reduced, abrasion is reduced, and the service life of the pipe fitting is prolonged; the water flow flowing out of the necking pipe can collide with the blocking piece fixed to one end of the guide-in pipe, due to the design of the blocking piece, the water flow can be smoothly dispersed and flow to the other end of the bent pipe, the impact force of the water flow to the inner wall of the pipe fitting is further relieved, and therefore the erosion corrosion resistance of the pipe fitting is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of pipe fittings, in particular to a bend pipe fitting resistant to scouring and corrosion. BACKGROUND

[0002] In fluid conveying systems, bend pipe fittings, as important components connecting pipelines, often face severe challenges of scouring and corrosion. Especially in the chemical, petroleum, water treatment and other industries, fluids often have characteristics of high pressure, high speed and high corrosiveness, which puts extremely high requirements on the durability and sealing performance of bend pipe fittings.

[0003] Traditional bend pipe fittings are often designed only to focus on their structural strength and the smoothness of fluid passage, while ignoring the protection against fluid scouring and corrosion. In the long-term use process, the high-speed scouring and corrosive action of fluids will cause the gradual wear of the inner wall of the pipe fitting, and even leakage, which not only affects the normal operation of the system, but also may cause serious safety accidents.

[0004] In order to solve this problem, some bend pipe fittings resistant to scouring and corrosion have appeared in the market, but these pipe fittings often use complex manufacturing processes and expensive materials, resulting in high cost, and still difficult to meet the use requirements in some specific working conditions. SUMMARY

[0005] The utility model aims at providing a bend pipe fitting resistant to scouring and corrosion to solve the problems raised in the background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a bend pipe fitting resistant to scouring and corrosion, comprising an elbow pipe, a connecting head fixed at both ends of the elbow pipe, a plug pipe inserted into the connecting head, a necking pipe integrally formed at one end of the plug pipe, a lead-in pipe integrally formed at one end of the necking pipe, and a baffle fixed at one end of the lead-in pipe.

[0007] Preferably, the connecting head is a round pipe structure with a cross section in the shape of "L", and the inner wall of the connecting head is provided with internal threads.

[0008] Preferably, the plug pipe is a "T"-shaped round pipe, the necking pipe is a sandglass-shaped round pipe, and the baffle is a square plate, the height of the baffle being less than the diameter of the pipe opening of the lead-in pipe.

[0009] Preferably, a reserved groove is formed at the end of the plug pipe away from the necking pipe, the reserved groove is an annular groove, a plurality of through holes are formed on the surface of the reserved groove, a screw rod is inserted into each through hole, one end of the screw rod is fixed to the inner wall of the connecting head, and a nut is screwed onto the other end of the screw rod.

[0010] Preferably, a sealing ring one and a sealing ring two are fixed at the end of the plug pipe away from the necking pipe, and the sealing ring one and the sealing ring two are respectively distributed on both sides of the reserved groove.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] The elbow pipe fitting of the utility model has the advantages that the plug pipe is inserted in the connecting head, and the sealing ring is arranged at both ends of the plug pipe, so that the tight sealing between the conveying pipe and the connecting head is realized. The resilience of the sealing ring not only enhances the sealing effect, but also makes the screw connection between the connecting head and the conveying pipe more firm, effectively preventing the leakage problem caused by fluid scouring. The necking pipe integrally formed at one end of the plug pipe enables the fluid to be resisted by the slope surface when entering the elbow pipe fitting, so that the speed is reduced. This design reduces the scouring intensity of the fluid on the inner wall of the pipe fitting, reduces the abrasion, and prolongs the service life of the pipe fitting. The water flow out of the necking pipe will impact the baffle fixed to one end of the inlet pipe. The design of the baffle not only enables the water flow to be smoothly dispersed and flow to the other end of the elbow pipe, but also further reduces the impact intensity of the water flow on the inner wall of the pipe fitting, thereby improving the anti-scouring corrosion capability of the pipe fitting. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The utility model discloses a structure schematic diagram.

[0014] Figure 2 The utility model discloses a structure top view.

[0015] Figure 3 The utility model discloses a structure schematic diagram. Figure 2 The utility model discloses a structure schematic diagram.

[0016] Figure 4 The utility model discloses a structure schematic diagram. Figure 3 The utility model discloses a structure schematic diagram.

[0017] Figure 5 The utility model discloses a structure schematic diagram.

[0018] Figure 6 The utility model discloses a structure schematic diagram.

[0019] In the drawing: elbow pipe 1, connecting head 2, plug pipe 3, necking pipe 4, inlet pipe 5, baffle 6, reserved groove 7, perforation 8, screw rod 9, nut 10, sealing ring one 11, sealing ring two 12. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme of the utility model carry out clearly, complete description, and the advantage is more clear and distinct, the following combining with the drawing carries out further detailed explanation to the utility model embodiment. It should be understood that the specific embodiments described herein are part of the embodiments of the utility model, rather than all embodiments, only to explain the embodiments of the utility model, and do not serve to limit the embodiments of the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor belong to the scope of the utility model protection.

[0021] Please refer to Figures 1-6 The utility model provides a kind of technical scheme: a kind of elbow pipe fittings of scouring corrosion resistance, including elbow 1, the both ends of elbow 1 are fixed with connector 2, connector 2 is the circular tube structure with the section of "L" shape, the inner wall of connector 2 is equipped with internal thread, the inside of connector 2 is inserted with plug pipe 3, plug pipe 3 is fixed with sealing ring one 11 and sealing ring two 12 in the end away from necking pipe 4, sealing ring one 11 and sealing ring two 12 are distributed respectively in the two sides of reserved groove 7.

[0022] The conveying pipe is screwed in connector 2, the end of plug pipe 3 is clamped between conveying pipe and connector 2 at this time, and sealing ring one 11 and sealing ring two 12 are clamped between plug pipe 3 and conveying pipe, play a sealing role, and the resilience of sealing ring one 11 and sealing ring two 12 makes the screwing of connector 2 and conveying pipe more firm.

[0023] One end of plug pipe 3 is integrally formed with necking pipe 4, one end of necking pipe 4 is integrally formed with lead-in pipe 5, one end of lead-in pipe 5 is fixed with baffle 6, plug pipe 3 is "T" shaped circular tube, necking pipe 4 is hourglass type circular tube, baffle 6 is square plate, the height of baffle 6 is less than the pipe mouth diameter of lead-in pipe 5, plug pipe 3 is away from the end of necking pipe 4 and is provided with reserved groove 7, reserved groove 7 is annular groove, a plurality of perforations 8 are formed on the surface of reserved groove 7, screw rod 9 is inserted in the inside of perforation 8, one end of screw rod 9 is fixed on the inner wall of connector 2, the other end of screw rod 9 is sleeved with nut 10.

[0024] Plug pipe 3 is optional structure, plug pipe 3 is inserted into connector 2 according to need, and plug pipe 3 cooperates with necking pipe 4 and lead-in pipe 5 and is inserted into elbow 1, and screw rod 9 passes through perforation 8, and nut 10 is sleeved and screwed on the rod body of screw rod 9, realize that plug pipe 3 is fixed in connector 2, when the liquid inside conveying pipe enters necking pipe 4 through plug pipe 3, water flow impacts the slope of plug pipe 3, realizes the water flow deceleration, after the water flow that flows out through necking pipe 4 hits baffle 6, water flow flows to the other end of elbow 1 through the gap on the upper and lower sides of baffle 6 and then flows out, connector 2 is only installed plug pipe 3 in water flow inflow end.

[0025] The process of using the anti-erosion elbow pipe fitting is as follows: ensure that the cross-sectional size of the conveying pipe matches the internal thread of the connector 2. Clean the end face of the conveying pipe to ensure that there are no impurities or foreign matter so as to be tightly screwed with the connector 2. Insert the plug pipe 3 (including the necked pipe 4, the lead-in pipe 5 and the baffle 6) from one end of the connector 2 until the plug pipe 3 is completely inside the connector 2. Ensure that the reserved slot 7 of the plug pipe 3 corresponds to the position of the screw rod 9 on the inner wall of the connector 2. Pass the screw rod 9 through the perforation 8 of the reserved slot 7. Put the nut 10 on the protruding end of the screw rod 9 and rotate the nut 10 until it is tightly screwed on the screw rod 9, thereby fixing the position of the plug pipe 3 in the connector 2. Screw one end of the conveying pipe in the open end of the connector 2, ensuring that the end face of the conveying pipe is in close contact with the end of the plug pipe 3. During the screwing process, ensure that the sealing ring one 11 and the sealing ring two 12 are clamped between the conveying pipe and the connector 2 to achieve a sealing effect. After the screwing is completed, gently shake the conveying pipe to check whether it is firmly connected to the connector 2. Observe whether the sealing ring one 11 and the sealing ring two 12 are tightly fitted due to the resilience force to ensure that there is no leakage. Before formal operation, debug the entire pipeline system to ensure that all connections are tightly leak-proof. Check whether the elbow pipe fitting and its connected parts can withstand the expected fluid pressure and erosion corrosion. Start the fluid conveying system and observe the performance of the elbow pipe fitting and its connected parts during operation. Pay attention to check whether there is leakage or abnormal sound and other signs, if necessary, stop immediately for inspection and repair.

[0026] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bend pipe fitting resistant to erosion corrosion, comprising a bend pipe (1), a connecting head (2) is fixed at each end of the bend pipe (1), characterized in that: The inside of the connecting head (2) is inserted with a plug pipe (3), one end of the plug pipe (3) is integrally formed with a necking pipe (4), one end of the necking pipe (4) is integrally formed with a lead-in pipe (5), one end of the lead-in pipe (5) is fixed with a baffle (6).

2. A scouring resistant elbow fitting according to claim 1, wherein: The connecting head (2) is a round pipe structure with a section of "L" shape, and the inner wall of the connecting head (2) is provided with an internal thread.

3. A scouring resistant elbow fitting according to claim 1, wherein: The plug pipe (3) is a "T" shaped round pipe, the necking pipe (4) is a sandglass type round pipe, the baffle (6) is a square plate, and the height of the baffle (6) is less than the diameter of the pipe opening of the lead-in pipe (5).

4. A scouring resistant elbow fitting according to claim 1, wherein: The end of the plug pipe (3) away from the necking pipe (4) is provided with a reserved slot (7), the reserved slot (7) is an annular slot, a plurality of through holes (8) are formed on the surface of the reserved slot (7), a screw rod (9) is inserted into the through hole (8), one end of the screw rod (9) is fixed on the inner wall of the connecting head (2), and the other end of the screw rod (9) is sleeved with a nut (10) through screwing.

5. A scouring resistant elbow fitting according to claim 1, wherein: The end of the plug pipe (3) away from the necking pipe (4) is fixed with a sealing ring one (11) and a sealing ring two (12), and the sealing ring one (11) and the sealing ring two (12) are respectively distributed on both sides of the reserved slot (7).

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