CN200993435Y

CN200993435Y - Town heating direct buried steam pipeline fitting comprehensive well

Info

Publication number: CN200993435Y
Application number: CN 200620170740
Authority: CN
Inventors: 包卫军; 邱尚廉; 秦茹; 徐宁锋
Original assignee: JIANGSU DILONG PIPE CO Ltd
Current assignee: JIANGSU DILONG PIPE CO Ltd
Priority date: 2006-12-21
Filing date: 2006-12-21
Publication date: 2007-12-19
Anticipated expiration: 2016-12-21

Abstract

An integrated pit for directly buried steam pipeline fittings for urban heating, relating to pipeline fittings in directly buried pipeline works for urban heating, comprising a hollow enclosed pit chamber, with an access hole on the top of the pit chamber, wherein, the directly buried steam pipe enters into the pit chamber from one end and is connected to the corrugated expansion joint fixed in the pit chamber, and exits from the pit chamber from the other end; the directly buried steam pipe in the pit chamber is provided on the bottom with a water collection tank with a drain device; in the drain device, a parallel pipeline comprising a drain valve pipe and a by-pass pipe is connected with a check valve at the terminal end, and then is connected to a drain pipe that extends out from the pit chamber vertically; in an appropriate layout, such an integrated pit chamber can implement compensation, drainage, damp removing, and blow-down functions, etc., and it eliminates ''vapor lock'' and employs a ''bottom-drainage and top-discharge'' safe operation technique, and is characterized in low cost, easy installation and service, low transportation cost, and safer operation of pipeline network.

Description

Urban heating direct-buried steam pipeline fitting integrated shaft

Technical field

The utility model relates to the pipeline fittings in the urban heating direct-buried pipeline engineering, refers in particular to a kind of urban heating direct-buried steam pipeline fitting integrated shaft that integrates compensator, steam trap connection, the I﹠M of humidity discharging pipe.

Background technology

At present, the applicant is at the installation of the corrugated expansion joint that uses in the heating direct-buried jet chimney engineering, propose: substitute no well system of laying there to be well to lay, as " 200510040814.9 " " direct-burried steam fixed compensating well " of applying in the early time, but each well chamber is a function, is the simple function equipment that space, well chamber is not fully utilized.Version by the right angle rectangle change into tapered after, though solved the rigidity problem, increased equipment volume, strengthened manufacturing cost.

At present, in the urban heating direct-buried jet chimney, hydrophobic to pipeline, no matter be that conventional no well mode is laid, what still the applicant proposed in " 200520073128.7 ", " 200620068415.3 " has the well system of laying hydrophobic, all adopt " on " the draining form, though this form can realize draining, but very easily generation " vapour lock " phenomenon and " water attack " problem of generation therefrom, make pipe vibration, during serious vibrations, can make the weld seam crack on the pipeline or come off and make strength weak spare---corrugated expansion joint breaks and has an accident.

In addition, in the present urban heating direct-buried jet chimney engineering, to being equipped with the humidity discharging pipe on " normal pressure " jet chimney, this pipe is by drawing on the buried outer pillar top in soil, avoid soil corrosion under the high temperature for the anticorrosive coat that makes the humidity discharging pipe, outside the humidity discharging pipe, be provided with heat-insulation layer and outer pillar, though a humidity discharging pipe consumption material seldom, but it sets up an office more, thereby has also increased making and maintenance cost.

Summary of the invention

The utility model is integrated with the advantage that well lays, a kind of collection compensator device is proposed, steam trap connection, the convenient of humidity discharging pipe one installed, the urban heating direct-buried steam pipeline fitting integrated shaft of maintenance, make full use of space, original well chamber, it is indoor that steam trap connection is incorporated in the offsetting well well, it does not only increase the volume of well chamber, and solved more up hill and dale adopt in the present directly buried pipeline " on " unavoidable " vapour lock " phenomenon of hydrophobic mode and the water attack problem that causes thus, improved the overall security of pipeline operation effectively, it specifically is to implement like this: urban heating direct-buried steam pipeline fitting integrated shaft, comprise hollow sealing well chamber, top, well chamber is provided with manhole, the direct-burried steam pipe enters the corrugated expansion joint that is connected and fixed on the well chamber from well chamber one end, the other end passes in the well chamber, it is characterized in that the direct-burried steam pipe bottom in the well chamber is equipped with the water collect tank of a steam trap connection, the parallel pipeline rear end that is made of drain valve pipeline and bypass line in the steam trap connection links to each other with the vertical drainpipe that passes the well chamber after being connected in series a check-valves.The utility model fills and part has utilized space, offsetting well chamber, and steam trap connection is installed in the same well chamber, has reduced manufacturing cost and maintenance cost and has realized the following discharging of ponding in the pipeline by check-valves, has avoided " vapour lock " phenomenon.

The utility model vertically passes the outdoor steam trap connection drainpipe of well and is equipped with heat-insulation layer and outer pillar outward, and heat-insulation layer is equipped with rainhat with outer pillar top, and draining so in real time prevents that again rainwater etc. from entering the insulation outer jacket.

The manhole port lid top at top, the utility model well chamber is equipped with a humidity discharging pipe, well chamber manhole port lid is equivalent to the direct-burried steam pipe, it is the peak of its outer pillar, the design of humidity discharging pipe is directly basseted on port lid, not soaked by underground water, both reached the humidity discharging purpose, need not again outside the humidity discharging pipe, to add heat-insulation layer and outside expander, reduced manufacturing cost.The humidity discharging pipe mouth of pipe is bent downwardly, beveled structure waterproof.

The external pressure bulge of design of pressure vessels is adopted in the comprehensive Jing Jing of the utility model chamber, under the condition that guarantees high safety, the thickness of the borehole wall is than adopting the pressure pipeline design standard to save 50%, the end socket at two ends, well chamber adopts normal ellipsoidal head, substitute conical head, satisfying under the demand of installing space, can shorten the length 40% of comprehensive Jing Jing chamber, saving manufacturing cost and freight.

The utility model is provided with soil cleaning port in the water collect tank bottom of steam trap connection, outside the exit well, with the convenient dirt that accumulates when pipe-line system is cleaned of removing, guarantees hydrophobic unimpeded.

The utility model is avoided unnecessary radial stress in order to guarantee steam concentricity and corrugated expansion joint unimpeded and the maintenance pipeline in the instrumentation tubes, it is indoor that one end at the nearly end socket of corrugated expansion joint place is fixed in well with three-dimensional guide type shoe, and it is indoor that the other end then is installed on well with hold-down support.

In order to adapt to different instructions for uses, the utility model well chamber length that can extend, set up a corrugated expansion joint again in well is indoor, two corrugated expansion joints place well chamber two seal head ends respectively, and steam trap connection can design at any one of the indoor jet chimney of well, is to reduce volume, the general parallel compensator below that is installed on, comprehensive well used in the middle of the comprehensive well of corrugated expansion joint can be done pipeline engineering on two, can further save material.

The utility model carries out the air-tight test that air pressure is 0.2Mpa in order to adapt to the pipeline engineering system, for making the constraint that is not put to the test of well chamber, in the two ends of well chamber end socket and steam pipe intersection interim partition panel is set, cut off the gas communication between pipeline and well chamber, assurance air-tight test safety is carried out, after finishing air-tight test, interim partition panel is removed, recovered steam pipe normal displacement user mode.

The utility model passes through rational deployment, with comprehensive well chamber realize compensation, hydrophobic, humidity discharging, multiple function such as remove contamination, it has eliminated " vapour lock ", and low level is hydrophobic, the safe operation technology of high-order draining, and manufacturing cost is few, installation and maintenance are convenient, freight is low, and pipe network operation is safer, and the applicability of this equipment is strong, can also realize that easily the normal pressure insulating tube changes the transition of vacuum heat-preserving tube into by transforming the SLD of the humidity discharging mouth and the hydrophobic draining mouth of pipe simply in addition.

Description of drawings

Accompanying drawing is a structural representation of the present utility model.

The specific embodiment

Embodiment 1, urban heating direct-buried steam pipeline fitting integrated shaft, the well chamber is the external pressure bulge, the end socket at two ends is an ellipsoidal head, the top of hollow sealing well chamber is provided with manhole 1, manhole 1 port lid top is equipped with a humidity discharging pipe 8, humidity discharging pipe 8 mouths of pipe are bent downwardly, direct-burried steam pipe 2 enters the corrugated expansion joint 3 that is connected and fixed on the well chamber from well chamber one end, steam pipe 2 passes in the well chamber other end, it is indoor that one end at corrugated expansion joint 3 nearly end socket places is fixed in well with three-dimensional guide type shoe 31, and it is indoor that the other end then is installed on well with hold-down support, and the two ends end socket of well chamber and steam pipe intersection are provided with interim partition panel 10.

Direct-burried steam pipe 2 bottoms in the well chamber are equipped with the water collect tank 11 of a steam trap connection 4, water collect tank 11 bottoms are provided with soil cleaning port 9 in addition, the parallel pipeline rear end that is made of drain valve pipeline and bypass line in the steam trap connection is connected in series a check-valves 5 backs and links to each other with the vertical drainpipe 6 that passes the well chamber, the outside of well outdoor drainage pipe 6 is equipped with heat-insulation layer and outer pillar, and its top is equipped with rainhat 7.

Embodiment 2, and two corrugated expansion joints of the indoor installation of well of the present utility model are installed on well chamber two seal head ends respectively.

Claims

1. urban heating direct-buried steam pipeline fitting integrated shaft, comprise hollow sealing well chamber, top, well chamber is provided with manhole, the direct-burried steam pipe enters the corrugated expansion joint that is connected and fixed on the well chamber from well chamber one end, the other end passes in the well chamber, it is characterized in that the direct-burried steam pipe bottom in the well chamber is equipped with the water collect tank of a steam trap connection, the parallel pipeline rear end that is made of drain valve pipeline and bypass line in the steam trap connection links to each other with the vertical drainpipe that passes the well chamber after being connected in series a check-valves.

2. comprehensive well according to claim 1 is characterized in that vertically passing the outdoor steam trap connection drainpipe of well and is equipped with heat-insulation layer and outer pillar outward.

3. comprehensive well according to claim 1 is characterized in that drainpipe heat-insulation layer and outer pillar top are equipped with rainhat.

4. comprehensive well according to claim 1 is characterized in that the manhole port lid top at top, well chamber is equipped with a humidity discharging pipe.

5. comprehensive well according to claim 4 is characterized in that the humidity discharging pipe mouth of pipe is bent downwardly.

6. comprehensive well according to claim 1 is characterized in that the well chamber is the external pressure bulge, and the end socket at two ends is an ellipsoidal head.

7. comprehensive well according to claim 1 is characterized in that the water collect tank bottom of steam trap connection is provided with soil cleaning port.

8. comprehensive well according to claim 1, it is indoor that an end that it is characterized in that the nearly end socket of corrugated expansion joint place is fixed in well with three-dimensional guide type shoe, and it is indoor that the other end then is installed on well with hold-down support.

9. comprehensive well according to claim 1 is characterized in that well is indoor one or two corrugated expansion joints are housed, and is installed on well chamber two seal head ends.

10. this comprehensive well according to claim 1 is characterized in that the two ends end socket of well chamber and steam pipe intersection are provided with interim partition panel.