CN206094004U

CN206094004U - Re -heater for boiler

Info

Publication number: CN206094004U
Application number: CN201620948966.2U
Authority: CN
Inventors: 陈伟; 陈云龙
Original assignee: JIANGSU HUINENG BOILER Co Ltd (DANYANG BOILER AUXILIARY MACHINERY PLANT Co LTD)
Current assignee: JIANGSU HUINENG BOILER Co Ltd (DANYANG BOILER AUXILIARY MACHINERY PLANT Co LTD)
Priority date: 2016-08-26
Filing date: 2016-08-26
Publication date: 2017-04-12
Anticipated expiration: 2026-08-26

Abstract

The utility model relates to a re -heater for boiler, heat exchange tube, import including many snakelike forms are collected the case, are located import on the import collection case is led steam pipe, export collection case and is located the steam pipe is led in export on the export collection case, and each heat exchange tube parallels the interval and sets up, the both ends of each heat exchange tube respectively with import collection case and export collection case is connected, each the import department of heat exchange tube is equipped with the choke valve, all be equipped with the pipe clamp part on each heat exchange tube, each connect through connecting device between the pipe clamp part. The beneficial effects of the utility model are that: what it can effectively reduce heat exchange tube and pipe clamp parts rocks the wearing and tearing that result in relatively, reduces the thermal deviation, makes the heat exchanger be heated evenly, avoids the heat exchange tube deformation, when the increase receives the hot side, reduces the re -heater volume.

Description

A kind of boiler reheater

Technical field

This utility model is related to boiler plant field, especially a kind of boiler reheater.

Background technology

Used as the vitals in boiler, which mainly does function with increase steam by increasing the enthalpy of steam to reheater Power, so as to improve power plant's efficiency of thermal cycle.In order to increase heating surface area, reheater is typically provided multiple tracks coil, by many Layer pipe clamp fix, for prevent reheater snake pipe outside smoke-shock and steam inside impact in the presence of and and pipe clamp Occur to rock relatively, so as to cause the contact between the pipe clamp in pipe wear, but existing design and reheater piping to connect for line Touch, cause pipeline still partial contact rubbing can occur between pipe clamp in the case of weak vibrations and make reheater piping that local to occur Abrasion, its concentrated wear depth can be normally reached 2mm, and reheater piping wall thickness itself is relatively thin, so after being worn again Hot device pipeline may result in boiler reheater leakage；Simultaneously as with increase and the steam parameter of station boiler capacity Improve, more and more adopt screen formula reheater in the boiler, as boiler relative width reduces, convection current reheater is snakelike per piece The pipeloop number that tube bank is adopted also accordingly increases, and whole pipe group has thermal deviation, causes pipe that the Internal and external cycle length of U-tube circle occurs , occur booster situations such as, there is potential safety hazard.

The content of the invention

To solve defect present in above-mentioned prior art, this utility model provides a kind of boiler reheater, and which can Effectively prevent heat exchanger tube from rocking caused abrasion, reduce thermal deviation, while heating surface is increased, reduce reheater volume.

A kind of boiler reheater described in the utility model, its technical scheme is：Heat exchanger tube including many snakelike shapes, Import header, the import steam guiding tube in the import header, outlet header and the outlet guide on the outlet header Steam pipe, the parallel interval setting of each heat exchanger tube, the two ends of each heat exchanger tube respectively with the import header and the outlet header Connection, the entrance of each heat exchanger tube is provided with choke valve, pipe clamp part, each pipe clamp portion is equipped with each heat exchanger tube Connected by attachment means between part.

As position of each heat exchanger tube in flue is different, each heat exchanger tube being heated thermal deviation of can also produce, and changes described in each Heat pipe is set up in parallel, and its two ends is connected on import header and outlet header, enters import header from oral airway is entered Steam diversion delivers to each heat exchanger tube, adjusts the steam stream that heat exchanger tube passes through by the choke valve of each heat exchanger tube entrance setting Amount, is heated evenly each pipe；Each heat exchanger tube is linked together by pipe clamp part and attachment means simultaneously, can be effectively reduced The amplitude rocked relative with pipe clamp generation in the presence of outside smoke-shock and steam inside impact, reduces the mill of heat exchanger tube Damage.

Further improve, the pipe clamp part includes two structure identical holders, if the holder includes involvement Socket part and the arc clamping part between two neighboring connecting portion, the arc clamping part and the heat exchange of two holders The outer peripheral face both sides of pipe coordinate contact, and two holders to be fitted to each other to connect and the heat exchanger tube is clamped in centre.

The quantity of the arc clamping part is equal with the U-shaped bending vertical tube number of the heat exchanger tube, the circular arc of two holders Shape clamping part is coordinated with U-shaped bending vertical tube outer peripheral face, and the connecting portion at holder two ends is by modes such as welding, screw thread connections Make two holders clamp heat exchanger tube, prevent each U-tube portion deforming displacement of heat exchanger tube, the arc clamping part and heat exchange Pipe face contacts, and also reduces the degree of wear of pipe fitting.

Further improve, the attachment means include some screw rods, the connecting portion is provided with through hole, each screw rod point Not Chuan Guo corresponding through hole on the connecting portion of each pipe clamp part, and by being respectively provided at the nut of each pipe clamp portion both sides cooperation Each pipe clamp part is fixed on the screw rod, the bullet coordinated with each screw rod between the two neighboring pipe clamp part, is provided with Spring, the spring are set on the screw rod.

Each pipe clamp part is linked together by the screw rod through through hole on its each connecting portion, and each pipe clamp part covers respectively The nut being located on screw rod is fixed on pipe clamp portion on screw rod；Spring is arranged with screw rod between adjacent tubes clamp assembly, it is described Both ends of the spring is contacted with nut respectively and respectively against two nuts, and heat exchanger tube is hit power when rocking, and spring can play slow The effect of punching, reduces the shaking amplitude between pipe clamp part and heat exchanger tube, while the deformation that can exchange heat pipe generation is adjusted Whole correction.

Further improve, the heat exchanger tube is provided with some fins being parallel to each other, the fin presses equal pitch arrangement.

Some fins are located on heat exchanger tube with certain pitch, and, perpendicular through fin, fin is used as reheater for boiler smoke The extended surface of heat exchanger tube, absorbs heat from boiler smoke, and transfers heat to heat exchanger tube in thermo-conducting manner, and Finally transfer heat to the reheated steam in heating surface, complete the heat transfer process of flue gas to steam, realize boiler smoke with again The heat exchange of hot device steam；The volume of reheater, reduction by fin, on set reheater received heat, can be reduced The length of reheater heat exchanger tube quantity in parallel and heat exchanger tube.

The beneficial effects of the utility model are：Which can effectively reduce, and heat exchanger tube is relative with pipe clamp part to rock caused mill Damage, reduce thermal deviation, be heated evenly heat exchanger, it is to avoid heat exchanger tube deforms, while heating surface is increased, reduce reheating body Product.

Description of the drawings

In order that content of the present utility model is easier to be clearly understood, below according to specific embodiment and with reference to attached Figure, is described in further detail to this utility model.

Fig. 1 is this utility model main structure diagram.

Fig. 2 is this utility model left view structural representation.

Fig. 3 is this utility model overlooking the structure diagram.

Fig. 4 is the pipe clamp modular construction schematic diagram.

Wherein, 1- heat exchanger tubes, 11- fins, 2- import headers, 3- import steam guiding tubes, 4- outlet headers, 5- outlet guide vapour Pipe, 6- choke valves, 7- pipe clamp parts, 71- holders, 711- connecting portions, 712- arc clamping parts, 8- attachment means, 81- spiral shells Bar, 82- nuts, 83- springs.

Specific embodiment

As illustrated, a kind of boiler reheater, including the heat exchanger tube 1 of many snakelike shapes, import header 2, located at described Import steam guiding tube 3, outlet header 4 in import header 2 and the outlet steam guiding tube 5 on the outlet header 4, each heat exchanger tube 1 parallel interval setting, the two ends of each heat exchanger tube 1 are connected with the import header 2 and the outlet header 4 respectively, each institute The entrance for stating heat exchanger tube 1 is provided with choke valve 6, is equipped with pipe clamp part 7 on each heat exchanger tube 1, each pipe clamp part 7 it Between connected by attachment means 8, the heat exchanger tube 1 is provided with some fins 11 being parallel to each other, and the fin 11 presses equal pitch Arrangement.

The pipe clamp part 7 includes two structure identical holders 71, and the holder 71 includes some connecting portions 711 And the arc clamping part 712 between the two neighboring connecting portion 711, the arc clamping part 712 of two holders 71 with The outer peripheral face both sides of the heat exchanger tube 1 coordinate contact, and two holders 71 to be fitted to each other to connect and be clamped in the heat exchanger tube 1 It is middle.

The attachment means 8 include some screw rods 81, and the connecting portion 711 is provided with through hole, and each screw rod 81 is distinguished The corresponding through hole through on the connecting portion of each pipe clamp part, and by being respectively provided at the nut that each pipe clamp part both sides coordinate 82 are fixed on each pipe clamp part on the screw rod 81, are provided with and each screw rod 81 between the two neighboring pipe clamp part 7 The spring 83 of cooperation, the spring 83 are set on the screw rod 81.

Preferred version of the present utility model is the foregoing is only, is not intended as further limiting to of the present utility model, it is all Be the various equivalence changes made using this utility model description and accompanying drawing content protection domain of the present utility model it It is interior.

Claims

1. a kind of boiler reheater, it is characterised in that heat exchanger tube, import header including many snakelike shapes, located at it is described enter Import steam guiding tube, outlet header and the outlet steam guiding tube on the outlet header in mouth header, each heat exchanger tube are parallel Interval setting, the two ends of each heat exchanger tube are connected with the import header and the outlet header respectively, each heat exchanger tube Entrance is provided with choke valve, and pipe clamp part is equipped with each heat exchanger tube, passes through attachment means between each pipe clamp part Connection.

2. a kind of boiler reheater according to claim 1, it is characterised in that the pipe clamp part includes two structures Identical holder, the holder include some connecting portions and the arc clamping part between two neighboring connecting portion, two The arc clamping part of individual holder is contacted with the outer peripheral face both sides cooperation of the heat exchanger tube, and two holders are fitted to each other The heat exchanger tube is clamped in centre by connection.

3. a kind of boiler reheater according to claim 2, it is characterised in that the attachment means include some spiral shells Bar, the connecting portion are provided with through hole, and each screw rod is each passed through corresponding through hole on the connecting portion of each pipe clamp part, And each pipe clamp part is fixed on the screw rod by being respectively provided at the nut of each pipe clamp portion both sides cooperation, it is two neighboring The spring coordinated with each screw rod is provided between the pipe clamp part, the spring is set on the screw rod.

4. a kind of boiler reheater according to claim 1-3, it is characterised in that the heat exchanger tube is provided with some phases Mutual parallel fin, the fin press equal pitch arrangement.