CN210754179U

CN210754179U - Condenser pipeline dredging device

Info

Publication number: CN210754179U
Application number: CN201921579555.0U
Authority: CN
Inventors: 蒋鹏仪
Original assignee: Copper Branch Yunnan Tin Co ltd
Current assignee: Copper Branch Yunnan Tin Co ltd
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2020-06-16
Anticipated expiration: 2029-09-23

Abstract

The utility model provides a condenser pipe pull throughs, the pull throughs include long tube (1), weld in solid core pole (8) on long tube top, weld in hollow drill bit (2) of long tube front end, suit in sleeve pipe (3) of long tube outside rear end, install in gland (4) at sleeve pipe both ends, set up sealing washer (5) and sealing ring (6) between gland and sleeve pipe, peg graft in inlet tube (7) on the sleeve pipe, set up a set of inlet opening (1-1) that lead to the long tube centre bore around the pipe wall on one section long tube that lies in the sleeve pipe, the hole of long tube communicates with each other with the hole of hollow drill bit. The utility model discloses can effectively clear away the incrustation scale in the long and narrow pipeline of condenser, easy operation, the scale removal is efficient.

Description

Condenser pipeline dredging device

Technical Field

The utility model relates to a pipeline mediation technical field, concretely relates to pull throughs of condenser pipeline.

Background

The condenser is auxiliary equipment of the steam turbine unit, and the steam discharged by the steam turbine is rapidly cooled into condensed water through heat exchange between the condenser and the steam discharged by the steam turbine, so that lower unit exhaust back pressure is ensured, and the unit is ensured to operate in a higher efficiency interval. In the long-term operation process of the unit, circulating water in a condenser pipeline is continuously evaporated and concentrated, so that bicarbonate, silicate and the like dissolved in water are continuously decomposed and precipitated, and scaling and blockage in the condenser pipe are caused.

The inner diameter of a condenser pipe is generally below 20mm, the whole length of the condenser pipe is generally above 4000mm, and the condenser pipe is long, narrow and horizontally arranged. Once the scale is formed, the heat exchange of the condenser is seriously influenced, so that the output of the steam turbine unit is insufficient, and the efficiency of the steam turbine unit is reduced. The surface roughness of the scale is much larger than that of the metal pipe wall. The core of follow-up scale deposit can be formed in the region that forms the incrustation scale, accelerates the formation of incrustation scale, finally causes condenser pipeline to block up completely, and the condenser is scrapped.

The existing pipeline descaling method mainly comprises two types of mechanical cleaning and chemical cleaning. Mechanical cleaning cannot effectively remove scale from long and narrow pipes, limited by the size of the cleaning equipment. Chemical cleaning has no requirement on the pipe diameter, but the flow channel must be communicated, the cleaning agent forms circulation to effectively remove scale, and once the condenser pipe is seriously blocked, the chemical cleaning also has difficulty in achieving an ideal effect.

Disclosure of Invention

The utility model aims at solving the problem of prior art, to the characteristics of condenser pipeline, provide a convenient to use, the condenser pipeline pull throughs that the cleaning performance is good.

The utility model adopts the following technical scheme:

the utility model provides a condenser pipe dredging device, includes the long tube, weld in the solid pole on long tube top, weld in the hollow drill bit of long tube front end, the sleeve pipe of suit rear end outside the long tube, install in the gland at sleeve pipe both ends, set up sealing washer and sealing ring between gland and sleeve pipe, peg graft the inlet tube on the sleeve pipe, a set of inlet opening that leads to the long tube centre bore is seted up around the pipe wall on lieing in one section long tube in the sleeve pipe, the hole of long tube communicates with each other with the hole of hollow drill bit.

Solid pole is square pole. The total length of the dredging device is 2500mm, the water inlet holes formed in the long pipe are 20 uniformly distributed holes, and the diameter of each water inlet hole is phi 2.5 mm.

The utility model discloses pull throughs can be through hollow bit precession condenser pipeline, and the broken incrustation scale that attaches to the pipeline inner wall lets in the acidizing fluid through letting in the incrustation scale in the pipeline from the inlet tube, washes out through the incrustation scale that lets in after the clear water will soften. The introduced acid liquor and the clean water simultaneously play roles of cooling the hollow drill bit, lubricating and promoting slag discharge, and the drill bit can be prevented from being broken due to scalding in the screwing-in process. The utility model discloses the incrustation scale in the long and narrow pipeline of condenser can effectively be clear away to the device, easy operation, and the scale removal is efficient.

Drawings

FIG. 1 is an external view of the present invention;

fig. 2 is a schematic structural view of the present invention cut along the axial direction.

Detailed Description

The condenser pipeline dredging device shown in fig. 1 and 2 comprises a long pipe 1, a solid rod 8 welded at the top end of the long pipe, a hollow drill bit 2 welded at the front end of the long pipe, a sleeve 3 sleeved at the rear end outside the long pipe, glands 4 installed at two ends of the sleeve, a sealing ring 5 and a sealing ring 6 arranged between the glands and the sleeve, and a water inlet pipe 7 inserted on the sleeve, wherein a group of water inlet holes 1-1 leading to a central hole of the long pipe are formed in one section of the long pipe positioned in the sleeve, and the central hole of the long pipe is communicated with the central hole of the hollow drill bit. The long pipe is a stainless steel pipe made of 06Cr19Ni10 with specification phi of 12 multiplied by 2, and the total length of the dredging device after being integrally manufactured and molded is 2500 mm. 20 water inlets are uniformly distributed on one section of long pipe wrapped by the sleeve around the pipe wall, and the diameter of each water inlet is phi 2.5 mm. The core drill bit 2 is directly commercially available. The solid rod 8 is made into a square rod, so that a handle can be conveniently sleeved or clamped by a hand-held electric drill. The utility model discloses the clearance of carbonate, silicate incrustation scale in the long and narrow pipeline of pipeline length more than 4000mm below the device specially adapted pipeline internal diameter 20 mm.

The method for dredging the pipeline of the condenser by adopting the dredging device comprises the following steps:

a. aligning the hollow drill bit 2 to the inlet of the blocked condenser pipeline, firstly screwing the drill bit into the condenser pipeline, and damaging the surface layer of the scale in the condenser pipeline;

b. introducing acetic acid into a condenser pipeline through a water inlet pipe 7, applying certain pressure, enabling the acid liquid to enter a central hole of the long pipe through a water inlet hole 1-1, and then ejecting the acid liquid from the front end of the hollow drill bit to enable the acid liquid to fully penetrate into a gap of the scale;

c. the acid liquor reacts with the scale in the pipeline, whether bubbles are emitted in the pipeline is observed, and when no bubbles are emitted, the reaction is finished and the scale is softened and dissolved;

d. screwing the hollow drill bit into the pipeline of the condenser again to further crush the softened water scale;

e. then, clear water is introduced into the pipeline of the condenser through a water inlet pipe 7, and the scale crushed by the drill bit is flushed out;

f. and e, repeating the operations of the steps b to e until the scales of the pipeline of the condenser are cleaned.

Claims

1. The utility model provides a condenser pipe pull throughs, a serial communication port, including long tube (1), weld in solid core pole (8) on long tube top, weld in hollow drill bit (2) of long tube front end, suit in sleeve pipe (3) of long tube outside rear end, install gland (4) at the sleeve pipe both ends, set up sealing washer (5) and sealing ring (6) between gland and sleeve pipe, peg graft inlet tube (7) on the sleeve pipe, a set of inlet opening (1-1) that lead to the long tube centre bore is seted up around the pipe wall on one section long tube that lies in the sleeve pipe, the hole of long tube communicates with each other with hollow drill bit's hole.

2. The condenser pipe dredging device of claim 1, wherein the solid rod (8) is a square rod.

3. The dredging device for condenser pipelines as claimed in claim 1, wherein the total length of the dredging device is 2500mm, the water inlet holes (1-1) formed in the long pipe are 20 uniformly distributed holes, and the diameter of the water inlet holes is phi 2.5 mm.