CN209740207U - Discharging tee joint with inner bypass ash conveying pipe - Google Patents

Abstract

The utility model discloses an ejection of compact tee bend of in-band bypass ash conveying pipe, including the tee bend body, a feeding flange and two ash conveying pipe flange of setting on the tee bend body, be connected with interior bypass ash conveying pipe between two ash conveying pipe flange, interior bypass ash conveying pipe is including main ash conveying pipe and install the ash conveying pipe inner tube on main ash conveying pipe inside wall, feeding flange and main ash conveying pipe intercommunication, the interval is provided with a plurality of baffles on the ash conveying pipe inner tube, and the interval is provided with the opening of a plurality of installation baffles on the lateral wall of ash conveying pipe inner tube, the diameter of ash conveying pipe inner tube is less than the diameter of half main ash conveying pipe, tee bend body middle part is equipped with deposits the storehouse. The utility model discloses play the effect of a setting tank, super large, overweight debris deposit bottom of the case regularly clear away, prevent to flow in the conveyer pipe, played the stifled pipe effect of preventing the accident, and can realize that the material is carried and is stabilized not stifled pipe, carry the ash-gas ratio, be fit for long distance transport, and make the low energy consumption of material transport low-loss.

Description

Discharging tee joint with inner bypass ash conveying pipe

Technical Field

The utility model relates to a malleation pneumatic conveying system spare part especially relates to an ejection of compact tee bend of in-band bypass ash conveying pipe.

Background

China introduces and develops a pneumatic ash removal system from the middle of seventies and is widely applied to a power system, but a plurality of problems are exposed in the actual engineering operation: the ash-gas conveying ratio is low. The pipe is easy to block. The medium flow velocity in the pipeline is high, the pipeline and the valve are seriously abraded, and the operation and maintenance cost is high. The system has small output and poorer economy when the system is transported for a long distance. The pipeline is many, takes up an area of more, arranges the difficulty, and the system reliability is relatively poor.

an internal bypass (double-sleeve) pneumatic conveying system is an advanced pneumatic conveying technology developed abroad in the 80 th century. The developed internal bypass turbulent dense-phase pneumatic conveying system changes the working conditions of low concentration, high flow speed, high abrasion, easy pipe blockage and high energy consumption in conventional positive-pressure conveying, finds an ideal alternative scheme for solving the problems of high output and dense-phase conveying of high-abrasion materials, and completely realizes the localization. The inner bypass ash conveying pipeline and various valves and pipeline accessories arranged on the pipeline jointly form a set of complete inner bypass turbulent flow dense-phase pneumatic conveying system. The discharge tee is one of the key pipeline accessories. Due to various reasons, foreign matters in the electric dust collector often fall into a pneumatic conveying system to cause the fault of the conveying system to block the pipe.

SUMMERY OF THE UTILITY MODEL

the utility model discloses a solve the defect that exists among the above-mentioned prior art and not enough, provide one kind and install in sending tank bottoms portion, play the effect of a setting tank, the bottom of the super large, overweight debris deposit box, regularly clear away, in preventing to flow into the conveyer pipe, played the stifled pipe effect of preventing the accident, and can realize that the material is carried and is stabilized not stifled pipe, carry the ash-gas ratio, be fit for long distance transport, and make the material carry the ejection of compact tee bend of the in-band bypass ash conveying pipe of low-loss low energy consumption.

The technical scheme of the utility model: the utility model provides an ejection of compact tee bend of in-band bypass ash conveying pipe, includes the tee bend body, sets up a feeding flange and two ash conveying pipe flange on the tee bend body, be connected with interior bypass ash conveying pipe between two ash conveying pipe flange, interior bypass ash conveying pipe includes main ash conveying pipe and installs the ash conveying pipe inner tube on main ash conveying pipe inside wall, feeding flange and main ash conveying pipe intercommunication, the interval is provided with a plurality of baffles on the ash conveying pipe inner tube, and the interval is provided with the opening of a plurality of installation baffles on the lateral wall of ash conveying pipe inner tube, the diameter of ash conveying pipe inner tube is less than the diameter of half main ash conveying pipe, tee bend body middle part is equipped with deposits the storehouse.

Preferably, the feeding flange is located at the top of the tee body and used for connecting the tee body with a flange at the bottom of the sending tank, the precipitation bin is located below the feeding flange, a bottom cover is arranged at the bottom of the precipitation bin, and the ash conveying pipe connecting flanges are located at two ends of the tee body and used for connecting the tee body with a gas conveying pipeline.

Preferably, one side of the bottom of the settling bin is provided with an access hole, and the access hole is connected with the tee body through a double-flange structure.

Preferably, the opening is splayed, and the baffle is installed in the middle of the opening and plays the role of drainage and damping.

Preferably, the inner pipe of the ash conveying pipe is connected with the main ash conveying pipe in a plug welding mode through a small hole formed in the main ash conveying pipe in advance.

Cutting an opening with a specific shape at the bottom of the inner pipe of the ash conveying pipe at a certain interval, and arranging a drainage-damping clapboard in the middle of each opening.

The utility model provides an interior bypass ash conveying pipe is different from other ordinary ash conveying pipe, and the three channel biggest structures of the ejection of compact of in-band bypass ash conveying pipe characteristics lie in that it comprises main ash conveying pipe and ash conveying pipe inner tube, are equipped with drainage-damping baffle on the ash conveying pipe inner tube, and the self-interacting through main ash conveying pipe pipeline realizes the turbulent state transport of flying dust. The conveying air passes through the main ash conveying pipe and the inner pipe of the ash conveying pipe simultaneously, and materials are accumulated and divided into material sections in a turbulent flow state. Under the low-speed conveying state, the turbulent flow state of the materials is destroyed and is accumulated on the bottom surface of the main ash conveying pipe, the main ash conveying pipe tends to block the pipe due to the accumulation of the materials, the resistance is increased, and the air flow entering the inner pipe of the inner bypass pipe is increased. After entering the inner pipe of the inner by-pass pipe, the air flows into the main ash conveying pipe again at the next airflow jet point, and forms turbulence in the area. Thus, the material section is continuously divided, moved and blown away, and the material is continuously conveyed forwards.

The inner bypass ash conveying pipe is realized by a very simple physical principle: the air flows to the direction with the minimum resistance, and meanwhile, the materials are conveyed in the pipeline alternately through the circulation of stacking, blowing, re-stacking and re-blowing.

The utility model discloses well feeding flange and sending tank bottom flange joint, installation and maintenance convenient and fast. The bottom cover of the precipitation bin is welded, and oversized and overweight impurities in the electric dust remover are periodically removed through the bottom of the deposition tank of the sending tank, so that the impurities are prevented from flowing into the conveying pipe to block the pipe. The access hole is of a double-flange structure, so that sealing and convenient disassembly and assembly can be guaranteed. And opening the access hole flange regularly to clean the oversized and overweight impurities deposited at the bottom. The main ash conveying pipe and the inner pipe of the ash conveying pipe form an inner bypass ash conveying pipe, and ash in the discharge tee joint is continuously conveyed backwards by using the ash conveying principle of the inner bypass ash conveying pipe; the ash conveying pipe is connected with the two ends of the ash conveying outer pipe through the flanges in a welded mode, and is connected with the inner bypass ash conveying pipeline and the gas conveying pipeline, and the flanges are convenient and fast to connect and convenient to overhaul.

The utility model discloses install in sending tank bottoms portion through the feeding flange during the use, play the effect of a setting tank, the bottom of super large, overweight debris deposit box is regularly clear away, prevents to flow into in the conveyer pipe, has played the stifled pipe effect of preventing accident, and can realize that the material is carried and is stabilized not stifled pipe, carry the ash-gas ratio, be fit for long distance transport, and make the low energy consumption of material transport low loss.

Drawings

Fig. 1 is a schematic view of the cutting structure of the present invention;

Fig. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic side view of the present invention;

In the figure, 1, a feeding flange, 2, a settling bin, 3, an inner pipe of an ash conveying pipe, 4, a main ash conveying pipe, 5, an ash conveying pipe connecting flange, 6, a bottom cover, 7, an access hole, 8, a three-way body, 9, a partition plate, 10, an opening and 11 are small holes.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings, but the present invention is not limited thereto.

As shown in fig. 1-3, a three-way discharge pipe with an internal bypass ash conveying pipe comprises a three-way body 8, a feeding flange 1 and two ash conveying pipe connecting flanges 5 arranged on the three-way body 8, wherein the internal bypass ash conveying pipe is connected between the two ash conveying pipe connecting flanges 5, and comprises a main ash conveying pipe 4 and an ash conveying pipe inner pipe 3 arranged on the inner side wall of the main ash conveying pipe 4. Feeding flange 1 and main ash conveying pipe 4 intercommunication, the interval is provided with a plurality of baffles 9 on ash conveying pipe inner tube 3, and the interval is provided with the opening 10 of a plurality of installation baffles 9 on the lateral wall of ash conveying pipe inner tube 3, and the diameter of ash conveying pipe inner tube 3 is less than the diameter of half main ash conveying pipe 4, and tee bend body 8 middle part is equipped with deposits storehouse 2. Feeding flange 1 is located the top of tee bend body 8 for with tee bend body 8 and the bottom flange joint who sends the jar, deposit the below that storehouse 2 is located feeding flange 1, and deposit 2 bottoms in storehouse and be equipped with bottom 6, ash conveying pipe flange 5 is located the both ends of tee bend body 8, is used for being connected tee bend body 8 and gas transmission pipeline. Deposit 2 bottom one sides in storehouse and be equipped with access hole 7, access hole 7 is connected with tee bend body 8 through double flange structure. The opening 10 is splayed, and the partition plate 9 is arranged in the middle of the opening 10 and plays a role in drainage and damping. The inner pipe 3 of the ash conveying pipe is connected with the main ash conveying pipe 4 in a plug welding way through a small hole 11 which is arranged on the main ash conveying pipe 4 in advance.

The utility model discloses during the use, ejection of compact tee bend is installed in the bottom of sending the jar, together with sending the jar, and one set of complete sending jar discharge system is constituteed to interior bypass ash conveying pipeline and pipeline annex. Generally, 4-5 sending tanks form an ash conveying unit, the head end connected with a discharge tee at the bottom of the first sending tank of the ash conveying unit is an air inlet pipe, and an air inlet valve is arranged on the head end; the tail end connected with a discharge tee joint at the bottom of the last sending tank of the ash conveying unit is an inner bypass ash conveying pipe, and a discharge valve is arranged on the inner bypass ash conveying pipe. The sending tanks in the ash conveying unit are connected in series by an inner bypass ash conveying pipeline.

After the sending tank is installed, the discharging tee joint can be installed after the sending tank is adjusted and fixed. When the device is installed, the inlet flange of the discharge tee and the outlet flange of the sending tank are pre-screwed, and the positions of the inlet and the outlet are adjusted to enable the inlet and the outlet to be on the same straight line with the arrangement pipeline of the sending tank. And checking the coaxiality of the discharging tee joints after the pre-installation is finished. And after the confirmation of no error, an inner bypass ash conveying pipeline is installed, and all sending tanks in the ash conveying unit are connected by the inner bypass ash conveying pipeline.

When the material level meter is full of materials and sends a signal, the bottom discharge valve is opened first, and then the air inlet valve is opened, so that the normal ash conveying of the ash conveying unit sending tank can be carried out. The conveying time of the ash conveying unit is set according to the integral ash conveying system. When the ash conveying system is overhauled, the access hole of the discharge tee can be opened to check whether a bypass pipeline in the tee is fallen off or abraded, and meanwhile, oversized and overweight objects deposited at the bottom of the tee can be cleaned to prevent the bypass pipeline from being brought into the inner bypass pipeline to block the pipeline.

Claims (5)

1. The utility model provides a discharge tee bend of in-band bypass ash conveying pipe which characterized in that: the three-way ash conveying pipe comprises a three-way body, a feeding flange and two ash conveying pipe connecting flanges, wherein the feeding flange and the two ash conveying pipe connecting flanges are arranged on the three-way body, an inner bypass ash conveying pipe is connected between the two ash conveying pipe connecting flanges, the inner bypass ash conveying pipe comprises a main ash conveying pipe and an ash conveying pipe inner pipe arranged on the inner side wall of the main ash conveying pipe, the feeding flange is communicated with the main ash conveying pipe, a plurality of partition plates are arranged on the ash conveying pipe inner pipe at intervals, openings for installing the partition plates are arranged on the side wall of the ash conveying pipe inner pipe at intervals, the diameter of the ash conveying pipe inner pipe is smaller than that of the half main ash conveying pipe, and a precipitation bin is arranged in.

2. The discharge tee joint of an in-band bypass ash conveying pipe according to claim 1, characterized in that: the feeding flange is located at the top of the tee joint body and used for connecting the tee joint body with a bottom flange of the sending tank, the precipitation bin is located below the feeding flange, a bottom cover is arranged at the bottom of the precipitation bin, and the ash conveying pipe connecting flanges are located at two ends of the tee joint body and used for connecting the tee joint body with a gas conveying pipeline.

3. The discharge tee joint of an in-band bypass ash conveying pipe according to claim 2, characterized in that: deposit storehouse bottom one side and be equipped with the access hole, the access hole is through double flange structure and this body coupling of tee bend.

4. The discharge tee joint of an in-band bypass ash conveying pipe according to claim 1, characterized in that: the opening is splayed, the baffle is installed and is played drainage and damped effect in the middle of the opening.

5. The discharge tee joint of an in-band bypass ash conveying pipe according to claim 1, characterized in that: the inner pipe of the ash conveying pipe is connected with the main ash conveying pipe in a plug welding mode through a small hole formed in the main ash conveying pipe in advance.