CN210196717U

CN210196717U - Boiler tube is with preventing leaking connecting device

Info

Publication number: CN210196717U
Application number: CN201920855492.0U
Authority: CN
Inventors: Yuhua Lu; 陆玉华
Original assignee: Jiangsu Dongfang Electric Power Boiler Fittings Co Ltd
Current assignee: Jiangsu Dongfang Electric Power Boiler Fittings Co Ltd
Priority date: 2019-06-10
Filing date: 2019-06-10
Publication date: 2020-03-27
Anticipated expiration: 2029-06-10

Abstract

The utility model discloses a boiler furnace tube is with preventing leaking connecting device, including two boiler tubes, and the inboard end of the inner wall of boiler tube is seted up the internal thread, the inboard end of two boiler tubes all is fixed to be equipped with coupling assembling, and two coupling assembling are closely laminated, the upper and lower both ends of coupling assembling all are fixed to be equipped with the otic placode, the one end that has the bolt runs through between the otic placode of left and right sides, the other end spiro union of bolt has the nut, this device slows down the flow through the cooperation of slow flow device and filter screen to the hot water and the steam of different flow and pressure, make the speed of hot water and steam passing through between two coupling assembling tend to a more stable interval, reduce the loss of the hot water and the steam of great difference to the coupling assembling, prolong the life of coupling assembling, simultaneously the device installs two coupling assembling through the spiro union placing, fix, so that the two furnace tubes are convenient to install and disassemble.

Description

Boiler tube is with preventing leaking connecting device

Technical Field

The utility model relates to a connecting device technical field specifically is a boiler stove pipe is with preventing leaking connecting device.

Background

The boiler is connected through the furnace tubes in the using process, the tightness between the two connected furnace tubes becomes a main problem, hot water or steam usually flows inside the furnace tubes of the boiler in the using process, the tightness between the furnace tubes is solved through the anti-leakage connecting device in the prior art, but the quantity and the speed of the hot water or the steam flowing through the furnace tubes at each time are different, the pressure caused to the connecting devices on the two connected furnace tubes is different, the pressure with different sizes is applied to the connecting device, the loss of the connecting device is increased, and the service life of the connecting device is shortened; meanwhile, the existing connecting device for the furnace tube is relatively troublesome in the processes of disassembly and assembly.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a boiler stove pipe is with preventing leaking connecting device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a leak-proof connecting device for boiler tubes comprises two boiler tubes, wherein inner threads are formed in the inner side ends of the inner walls of the boiler tubes, connecting assemblies are fixedly assembled at the inner side ends of the two boiler tubes and are tightly attached to each other, lug plates are fixedly assembled at the upper end and the lower end of each connecting assembly, one end of a bolt penetrates through the lug plates at the left side and the right side, and a nut is screwed at the other end of the bolt;

coupling assembling includes the annular slab, and the equal fixed assembly in upper and lower both ends of annular slab has the otic placode, the fixed cover in the outside of annular slab has connect airtight cover of rubber, and airtight cover of rubber closely laminates with the otic placode, airtight cover cup joints in the boiler tube outer wall of rubber, the lateral surface fixed assembly of annular slab has external screw thread pipe and external screw thread pipe spiro union in the medial extremity of boiler tube, the ring channel has been seted up to the medial surface of annular slab, and is equipped with the rubber ring in the ring channel, the intraductal slow flow device that is equipped with of external screw thread, the inner wall fixed assembly of annular slab has the filter screen.

Preferably, the slow flow device includes the plectane of fixed assembly in the internal wall of external screw thread pipe, and the plectane outer wall closely laminates with the internal wall of external screw thread pipe, the circular slot has been seted up to the left surface of plectane, the through-hole that runs through the plectane has evenly transversely been seted up to the right side of circular slot, the slow flow annular has evenly been seted up to the inner wall of through-hole.

Preferably, the inner end of the rubber ring extends out of the annular groove, and the length of the part of the rubber ring extending out of the annular groove is 1 mm.

Preferably, the outer side of the inner wall of the outer threaded pipe is funnel-shaped, and the inner diameter of the outer side end of the outer threaded pipe is larger than that of the inner side end of the outer threaded pipe.

Compared with the prior art, the beneficial effects of the utility model are that: this scheme has designed a boiler stove pipe is with preventing leaking connecting device, this device delays the flow through the hot water and the steam of slow flow device and filter screen cooperation to different flow and pressure, make the speed of hot water and steam between two coupling assembling tend to a more stable interval, reduce the great hot water of difference and steam to coupling assembling's loss, the life of extension coupling assembling, the device is through placing two coupling assembling of installation of spiro union simultaneously, fix through bolt and nut between two coupling assembling, make two boiler tubes easy to assemble and dismantle, be equipped with airtight structure between two coupling assembling of laminating mutually, the reinforcing seal.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic sectional view of the assembling structure of the middle furnace tube and the connecting assembly of the present invention;

FIG. 3 is a schematic sectional view of the structure of the moderate-current device of the present invention;

FIG. 4 is a schematic sectional view of a part of the connecting assembly of the present invention;

fig. 5 is a right side view of the structure of fig. 4 according to the present invention.

In the figure: 1 furnace tube, 2 connecting components, 21 annular plates, 22 rubber sealing sleeves, 23 external threaded pipes, 24 annular grooves, 25 rubber rings, 26 slow flow devices, 261 circular plates, 262 circular grooves, 263 through holes, 264 slow flow annular grooves, 27 filter screens, 3 lug plates, 4 bolts and 5 nuts.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, the present invention provides a technical solution: the utility model provides a boiler furnace tube is with preventing leaking connecting device, includes two boiler tubes 1, and the internal thread has been seted up to the inner wall medial extremity of boiler tube 1, and the equal fixed mounting of medial extremity of two boiler tubes 1 has coupling assembling 2, and two coupling assembling 2 closely laminate, and the equal fixed mounting in upper and lower both ends of coupling assembling 2 has otic placode 3, runs through the one end that has bolt 4 between the left and right sides otic placode 3, and the other end spiro union of bolt 4 has nut 5.

The inboard end of two boiler tubes all is equipped with coupling assembling 2, and two coupling assembling 2 are laminated each other, and the otic placode of its top passes through bolt 4 and nut 5 fixed connection, realizes two coupling assembling 2's convenient dismantlement and the fixed of installation.

Coupling assembling 2 includes annular plate 21, and the equal fixed otic placode 3 that is equipped with in the upper and lower both ends of annular plate 21, the fixed airtight cover 22 of rubber that has cup jointed in the outside of annular plate 21, and airtight cover 22 of rubber closely laminates with otic placode 3, airtight cover 22 of rubber cup joints in boiler tube 1 outer wall, the fixed inboard end that is equipped with external screw thread pipe 23 and external screw thread pipe 23 spiro union in boiler tube 1 of lateral surface of annular plate 21, ring channel 24 has been seted up to the medial surface of annular plate 21, and be equipped with rubber ring 25 in the ring channel 24, be equipped with in the external screw thread pipe 23 and delay flow device 26, the fixed filter screen 27 that is equipped with in inner wall of.

The rubber sealing sleeve 22 is sleeved on the outer wall of the furnace tube 1, the rubber sealing sleeve 22 is tightly attached to the outer wall of the furnace tube 1, gaps between the furnace tube 1 and the annular plate 21 are sealed and shielded by the rubber sealing sleeve 22, leakage is avoided, the annular plate 21 is in threaded connection with the inner side end of the furnace tube 1 through the outer threaded tube 23, the rubber rings 25 on the inner sides of the two attached connecting assemblies 2 are tightly attached to each other, deformation is generated by extrusion of the rubber rings 25, the butt joint of the two furnace tubes 1 is effectively achieved, leakage is avoided, impurities in hot water or steam can be filtered by the filter screen 27, the flow rate of the hot water or the steam is reduced by matching with the flow slowing device 26, the flow rate of the hot water or the steam flowing through the positions of the two connected connecting assemblies 2 tends to a more stable interval.

The slow flow device 26 includes a circular plate 261 fixedly mounted on the inner wall of the outer threaded pipe 23, the outer wall of the circular plate 261 is tightly attached to the inner wall of the outer threaded pipe 23, a circular groove 262 is formed on the left side surface of the circular plate 261, a through hole 263 penetrating through the circular plate 261 is uniformly and transversely formed on the right side surface of the circular groove 262, and a slow flow ring groove 264 is uniformly formed on the inner wall of the through hole 263.

As shown in fig. 5, the inner diameter of the left end of the circular groove 262 is larger than that of the right end thereof, the left end edge thereof is a tip attached to the external threaded pipe 23, which facilitates the entering of water flow or gas and prevents the blocking of water flow or gas, the water flow or gas passes through the circular plate 261 through the through hole 263, the slow flow ring groove 264 is an annular groove opened on the inner wall of the through hole 263, the slow flow ring groove 264 is entered when the water flow or gas passes through the through hole 263, the slow flow ring groove 264 functions to temporarily store water or gas, and the through holes 263 and the slow flow ring grooves 264 therein cooperate to effectively slow down the flow rate of water flow or gas.

The annular groove 24 is extended from the inner side end of the rubber ring 25, the length value of the part of the rubber ring 25 extending out of the annular groove 24 is 1 mm, the two rubber rings 25 are mutually extruded when the two connecting assemblies 2 are attached through the design, and after the bolt 4 and the nut 5 on the lug plate 3 are completely screwed tightly, the two rubber rings 25 are extruded and deformed, are attached more tightly, and water flow or gas leakage is avoided.

The outer side of the inner wall of the outer threaded pipe 23 is funnel-shaped, the inner diameter of the outer side end of the outer threaded pipe 23 is larger than the inner diameter of the inner side end of the outer threaded pipe 23, as shown in fig. 2, the inner diameter of the left end of the outer threaded pipe 23 is larger than the inner diameter of the right end of the outer threaded pipe, the edge of the left end of the outer threaded pipe is a tip attached to the furnace tube 1, water flow or gas can enter conveniently, and obstruction to water flow.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a boiler furnace tube is with preventing leaking connecting device which characterized in that: the furnace tube comprises two furnace tubes (1), wherein inner threads are formed in the inner side ends of the inner walls of the furnace tubes (1), connecting assemblies (2) are fixedly assembled at the inner side ends of the two furnace tubes (1), the two connecting assemblies (2) are tightly attached to each other, lug plates (3) are fixedly assembled at the upper end and the lower end of each connecting assembly (2), one end of a bolt (4) penetrates through the lug plates (3) at the left side and the right side, and a nut (5) is screwed at the other end of the bolt (4);

coupling assembling (2) include annular slab (21), and the equal fixed otic placode (3) that is equipped with in the upper and lower both ends of annular slab (21), the outside of annular slab (21) is fixed to be cup jointed rubber closure sleeve (22), and rubber closure sleeve (22) closely laminates with otic placode (3), rubber closure sleeve (22) cup joint in boiler tube (1) outer wall, the lateral surface of annular slab (21) is fixed to be equipped with external screw thread pipe (23) and external screw thread pipe (23) spiro union in the medial extremity of boiler tube (1), ring channel (24) have been seted up to the medial surface of annular slab (21), and are equipped with rubber ring (25) in ring channel (24), be equipped with in external screw thread pipe (23) and slow flow device (26), the inner wall fixed of annular slab (21) is equipped with filter screen (27).

2. A leak-proof connection device for a boiler tube according to claim 1, characterized in that: slowly flow device (26) including fixed mounting in plectane (261) of external screw thread pipe (23) inner wall, and plectane (261) outer wall and external screw thread pipe (23) inner wall closely laminate, circular slot (262) have been seted up to the left surface of plectane (261), through-hole (263) that run through plectane (261) have evenly transversely been seted up to the right flank of circular slot (262), slowly flow annular groove (264) have evenly been seted up to the inner wall of through-hole (263).

3. A leak-proof connection device for a boiler tube according to claim 1, characterized in that: the inner side end of the rubber ring (25) extends out of the annular groove (24), and the length of the part of the rubber ring (25) extending out of the annular groove (24) is 1 mm.

4. A leak-proof connection device for a boiler tube according to claim 1, characterized in that: the outer side of the inner wall of the outer threaded pipe (23) is funnel-shaped, and the inner diameter of the outer side end of the outer threaded pipe (23) is larger than that of the inner side end of the outer threaded pipe (23).