CN104154324B - Anchor block integrally mixes Method for Installation with valve well - Google Patents

Abstract

The present invention " anchor block integrally mixes Method for Installation with valve well " is that, for a new technology in direct buried hot water pipeline, it is combined together " anchor block " and " valve well " two separate components with function alone, and it is that anchor block is valve well again；This new method is by the way that a pair of poling boreholes wall of valve well are done and improved according to the requirement of anchor block, make it while having the function of anchor block and valve well, valve can dismount " internal force " produced during without destroying Pipe installing preheating at any time in well, so as to solve with the non-detachable problem of early gate, former valve well is also solved simultaneously crossing the travelling gap with wall pipe of wall due to pipeline can not obturage and the problem of intake.Design for the anchor block and valve well of direct buried hot water pipeline is started a Tiao Xin roads by this new process, is conducive to the maintenance and replacing of valve, and immersion, the waterproof effect for preventing underground water are more reliable, greatly improves the stability ability and service life of pipeline.

Description

Anchor block integrally mixes Method for Installation with valve well

Technical field：

The invention belongs to heating industry, Pipe installing field, direct buried hot water pipeline specific technique；Its invention will be A Tiao Xin roads are opened up in the design of direct buried hot water pipeline anchor block and valve well.

Background technology：

There is development zone just to have the popularization of central heating, just there is direct buried jet chimney and direct buried hot-water line Road technology, will also give the credit to the appearance of vinyl tube (black pod pipe) and polyurethane foam certainly, and we fall in this respect After developed country at least 20 years.

Area is built 29 years in Tianjin Development Zone, is one of the economic and technological development zone of first 14 openings in the whole nation, Deng Xiaoping：The epigraph of " development zone is very hopeful ", it is exactly after several development zones have been investigated, in August in 1986 21 days in Tianjin In development zone Dan Hua Bicycle Corp. Pty Ltd., the simple meeting room being arranged in dining room, have a well-though-out plan, show great foresight, strength of driving quill What pen write.

Nineteen thirty-seven Germany Otto professors Bayer have found that polyisocyanates carry out sudden reaction with polyol compound first Polyurethane can be made, the uniqueness such as the insulating of polyurethane, heat-insulated, anticorrosive, nonflammable, lightweight, foaming, mobility, curability It can be referred to by the enterprise technology personnel of all trades and professions among product, heat supply heating industry replaces rock wool to do heat-insulation layer with it, used again Black pod pipe does anti-corrosion waterproof layer, replaces mineral wools and glass cloth to be incubated to steel pipe with them, so that heating pipeline can be with Underground is embedded to, the heat supply pipeline in city is disappeared on the groundBeautify urban environment significantly, and can be in factory in batch Manufacture well after, move building site assembling to again, therefore it is that the urbanization transformation of German 1940s is rendered outstanding service.20 The fifties in century, the U.S. and Britain just industrialized it, and Japanese nineteen fifty-five introduces from German Bayer companies, and China is poly- ammonia at the end of the fifties Ester industry just starts, and is widely used in after central heating industry should be nineteen ninety.

Power ＆ light company of TEDA in Tianjin grows up together with development zone, and the direct buried hot-water line of the key facility of central heating Net should 92 years factories of thermal source two build up after just have, it uses the mature technology of external heat supply, using disposable ripple Line pipe compensator is compensated as heat stretch, and polyurethane foam is as heat-insulation layer, vinyon (being commonly called as black pod) as anti-corrosion Fish tail and waterproof layer.Take the lead in using direct buried pipe technology it may be said that Tianjin Development Zone is the whole nation.In all fairness, this technology We introduce the far from enough deeply and clear of absorption, and thing, which has been introduced, also can manufacture and use, and how it be made good use of Slowly groped and summarized from practice with to also needing to us, we do not fetch Taoist scripture from foreign countries for these！Steamed like state Car quality less than famous brand name car mass it is the same, perhaps in some link just it is poor so little by little

Managed every year after 92 years are come into operation using the disposable directly buried pipeline of pre-stretching in Tianjin Development Zone living area The problem of net cracking leak, from two or three of leak sources of a winter originally to more than ten of leak source after 10 years, tens leakages of the whole district Point, leak source 60% goes out in compensator, and 40% goes out in anchor block, elbow, threeway, straight tube weld bond.Hurry repairing is disconnected to manage, uses straight tube Section replaces compensator, and intrinsic welding valve is abolished because of imprecision is replaced by flanged valve, and the operation later stage installs centre additional Wicket causes the pipeline internal force of original installation to be a main cause by destruction.

Since 09 year, have to " disposable corrugated expansion joint " is replaced with into " permanent bellow-type expansion successively Compensator problem of Cracking has been reduced caused by device ", cold-drawn, but constantly " belly breaking ", a secondary network were already because of 20 years " riddled with gaping wounds " corrosion is unavoidable, and leak source is reached at 96 within 2013, causes pipe network water leakage not solve thoroughly still because of corrosion Certainly.Trace it to its cause, the movable end of this and " permanent corrugated expansion joint " can not overcome to wriggle repeatedly due to expanding with heat and contract with cold causes Anti-corrosion layer interface imprecision is relevant.Have again and seeped water and ponding, polyurethane heat-insulation because pipeline is frequently broken leak, valve well in the past Layer leakiness and absorb water, make moist corrosion and polyurethane foam of pipeline departs from, and finally exacerbates the corrosion of weld bond and pipeline.

By taking the southern line of the factory of strand Energy Co., Ltd. thermal source five, the north big networks of rivers of line DN600 as an example, input makes within 2002 It is designed without considering middle shutoff door with, original, operation has added shut-off wicket in 2005 after 3 years, after having added wicket, pipe network The problem of just occurring compensator tear every year, and be the rule spread successively to next compensator.Have in 2010 The one-off compensator of all fronts feed pipe is replaced by permanent compensator, current compensator tear problem does not occur temporarily.Due to Permanent compensator still uses corrugated stainless steel tubing material, and movable end sealing easily cracking and aging and immerse ground Lower water, and development zone is originally salt-soda soil, level of ground water is high and is mordant, the service life most six of bellows Year, therefore the pipe network leakage problem that the damage of several years post-compensators is brought is still a hidden danger.

How the valve and valve well of direct buried hot water pipe net are set the problem of be critically important in fact, and we are conventional Its importance was not emphasized, or even the design having does not consider to set middle shutoff door in the distance of 5 kms, for Backbone network comes out setting main door from boiler room and controlled, and terminally positioned UNICOM's door, branch net sets branch's door, do not examined for major network The problem of considering subsection setup, in practice it has proved that such design is incomplete, does not account for the leakage of pipe network and the maintenance of valve The problem of how shutoff door is changed are not accounted for yet although it is contemplated that there is provided middle shutoff door for replacing problem, some designs (the southern big networks of rivers of line DN1000 of the such as factory of thermal source four and eight street DN700 branched networks)Can be true there is presently no a valve products Protect forever not badIn particular by pipeline of the one-off compensator as pipe network thermal compensation, the shadow once valve dismounting replacing is bound to The intrinsic stability of speaking pipe net, the direct buried pipe network that whether external heat source heating or electric preheating are installed, is managed during cold conditions Road is with the presence of inner tensions, and valve pipeline of once dismantling will bounce back 2-5cm, and for from welding valve, this 2- 5cm short size, the valve newly loaded certainly will will lengthen 2-5cmBy replacing several times, intrinsic internal force will be thorough Eliminate, become " stiff net ", then thermal expansion will produce compression beyond the elastic range of pipe network, then contract on cooling will It is broken because of " cold-drawn "！

It is also a hard nut to crack to have valve well to enter water problems again, still by taking Tianjin Development Zone as an example, because its is special Geographical environment, up to the present goes back neither one valve well and ensures not enter underground water, either old engineering or newly built construction, respectively Plant leakage stopping technology and new technology was all tried, underground water is still invaded, not only bring operation inconvenience also corrosion valve and pipeline.

In order to solve the above problems, applicant proposes that this is invented.

The content of the invention：

As shown in Figure of description 1-5；Anchor block is with valve well integrative-structure by pipeline (1)；Polyurethane insulation coating (2), PVC plastic anticorrosive coat (3), poling borehole wall A (4), flange gasket (5), flange (6), fixed plate B (7), poling borehole wall B (8), well lid (9), side wall (10), valve (11), manhole cover (12), fixed plate A (13), the nest that catchments (14), shaft bottom (15), bolt (16), close Seal (17) is constituted；By two poling Shaft wall designs of valve well into two fixing points, its distance is m=3 meters, runs the highest temperature 120 DEG C of degree, 0 DEG C of cold-state temperature, its effective expansion is 4.032mm (if being 5.04mm by 150 DEG C of considerations), installs temperature and takes 60 DEG C, then the thermal expansion amount that installation temperature to running temperature occurs is 2.016mm, temperature returning to 0 DEG C of temperature of cold conditions is installed Contracting amount is also 2.016mm, if environment temperature is at 20 DEG C, amount of recovery only has 1.344mm；

When the mechanics of materials was said, rod member is tension or in compression, its longitudinal size and lateral dimension will change.We Original length Deng straight-bar represents that the length in the presence of axial tension (or pressure) F, after deformation is represented with L1, with Δ L tables with L Show elongation (shortening) amount of bar vertically；

Then there is relational expression：Δ L=L₁-L 1-1

Δ L is referred to as the absolute deformation of rod member, for pull bar Δ L be on the occasion of；It is negative value for depression bar Δ L.

With

ε is referred to as the relative deformation (or line strain) of rod member in formula.Hooke's law (Hooke's law) is taught that：When in bar Axle power N when being no more than a certain limit, the absolute deformation Δ L and axle power N and the long L of bar of bar are directly proportional, with the cross-sectional area A of bar into Inverse ratio, i.e.,

In addition it is, relevant also with the material property of bar, proportionality coefficient E is introduced, is then had

This relational expression is referred to as Hooke's law.E is referred to as to represent that material resists a coefficient of tension and compression deformation ability in formula The tension and compression modulus of elasticity of material, E values are got over large deformation and are just not easy.

Formula 1-3 can also be write as

If the cross-sectional area of bar is A, axle power is N, then internal force (i.e. stress) in unit area isBecause internal force N hangs down Directly in cross section, therefore stress is also perpendicularly to cross section, and such stress is referred to as direct stress, is represented with symbol σ.Then have

1-5 formulas substitution 1-4 formulas are drawn

3 meters of long steel pipes in Figure of description 1 are regarded as rod member by we, and by 1-6 formulas, we can calculate steel pipe Absolute deformation amount Δ L during deformation.It can be checked in from relevant table, No. 20 carbon steel tension and compression yield limit stress σ are 236MPa, i.e., 236×10⁶N/m²(newton, rice²), referred to as handkerchief, 10⁶Handkerchief is referred to as MPa.Elastic modulus E value is 200GPa (200 × 10⁹Handkerchief), 1 (GN)=10³(MN) it is 1 (lucky ox)=10³(million Ns), 1GPa=10³MPa=10⁹Pa；Substitute into 1-6 formulas and show that 3 meters of long steel pipes are exhausted It is to deflection Δ L

It can be drawn from result of calculation, 3 meters of long steel pipes are in the presence of " enough energetically ", it is necessary to occur stretching for 3.54mm Long or compression 3.54mm, the absolute deformation (starting flow shape) that steel pipe just can be stretched or compressed.

The heat supply pipeline steel material that generally we select is No. 20 carbon steels, by calculating above, 3 meters of long steel pipes its Minimum stretch elastic deformation amount is 3.54mm, and elasticity of compression deflection is also, as long as steel pipe amount of tension in other words, 3 meters long No more than 3.54mm, steel pipe would not occur to extend flow shape；Conversely, compression is no more than 3.54mm, and steel will not also be pressed Compression deformation.

By calculate it is understood that, the thermal expansion deformation amount of 3 meters long 0~120 DEG C of steel pipe be 4.032mm, it is and 3 meters long Steel pipe allows maximum flexibility deflection to be 3.54mm, if we directly install valve, allow it at 0~120 DEG C In the range of arbitrarily change that and to go wrong certainly, stretching and compression repeatedly do not cross how long pipeline will ftracture, Just as we stick up iron wire back and forth

And the deflection of 60~120 DEG C of steel pipe 3 meters long be 2.016mm, elastic deformation amount (3.54mm) scope it It is interior；If valve is installed on pipeline by we in the environment of 60 DEG C, then, when pipe temperature drops to 0 DEG C, will be to pipe Road produces a drawing force, and the displacement that this active force is produced is 2.016mm, is allowing tensile elasticity length 3.54mm models Within enclosing, after winter transportation starts injection hot water, temperature slowly rises to 60 DEG C from 0 DEG C, when thermal expansion force counteracts installation pair Power is stretched in the drawing of steel pipe, and pipeline reaches flexible equalization point, now pipeline neither tension nor is pressurized, when water temperature continues to heat up from 60 DEG C During to 120 DEG C, the thermal expansion force of pipeline produces compression to pipeline, and its compression displacement amount is 2.016mm, is also allowing elasticity Within deflection 3.54mm, so plastic deformation will not be produced to pipe material, destruction will not be more produced.

It is exactly the rationale of " anchor block integrally mixes Method for Installation with valve well " (referred to as " intelligence of giving birth Method for Installation ") above.He Utilize 60 DEG C -0 DEG C of steel；The characteristics of 60 DEG C -120 DEG C of deflection is both less than amount of plastic deformation, with pre-stretching certain size Installation method realizes the thing that the past is not bold enough to do.

Brief description of the drawings：

Fig. 1-3 is different views of the invention；

Fig. 4 is front view of the invention；

Fig. 5 is the structure chart of anchor block.

Embodiment：

As shown in Figure of description 1-5；Anchor block is with valve well integrative-structure by pipeline (1)；Polyurethane insulation coating (2), PVC plastic anticorrosive coat (3), poling borehole wall A (4), flange gasket (5), flange (6), fixed plate B (7), poling borehole wall B (8), well lid (9), side wall (10), valve (11), manhole cover (12), fixed plate A (13), the nest that catchments (14), shaft bottom (15), bolt (16), close Seal (17) is constituted；

Poling borehole wall A (4), poling borehole wall B (8) are designed to two anchor blocks, with side wall (10) and shaft bottom (15) by two Individual anchor block connects and composes valve well, or perhaps by two poling boreholes wall of valve well do it is sufficiently large, and fixed plate is put Enter to constitute the structure of anchor block.Well lid (9) is covered on well, and playing sealing function by sealing ring (17) prevents rainwater stream Enter, well lid (9) is designed with 2 discrepancy manhole covers (12) and pre-buried ring is used in lifting.Valve (11) is arranged on flange (6), with valve Door flange is tightened by bolt (16), and flange gasket (5) plays sealing function between being placed in two flanges.The nest (14) that catchments is used to put Enter pumping equipment and exclude well internal water accumulation.

As shown in Figure of description 5, fixed plate " first " plate (20) is fixedly welded on pipeline (1), fixed plate " second " plate (18) it is a pair, in the concrete body borehole wall, has heat insulation layer (19) to be separated by between first and second liang of plates, for reducing heat transfer.

1st, the position of anchor block is determined in the pipe trench dug, is more than one meter of fluting according to the side of key dimension four；

If the 2, soil earth bearing strength should not enough make a call to four 20 meters of long piles, sedimentation is prevented.

3rd, place mat size blotter 300mm after stake has been beaten thick flat with stake top face.

4th, reinforcing bar, branch box board are laid by well bottom diagram paper size, has installed water collecting pump nest.

5th, placing concrete (cement, sand, stone ratio is by 1: 3: 5 and mixes waterproofing agent), fully smashes oar floating.

6th, the side of valve flanges and pipe flange connection, centre are placed into heat-resisting asbestos rubber pad 4mm on the ground Thickness, is tightened to 3mm.The other end connection of the other end and pipeline of valve flanges, middle 5mm steel plate pads of placing are tightened.

7th, a pair of fixed plates are inserted in 3 meters of location dimension interval between pipeline, two plates, valve placed in the middle, fixed plate and steel pipe Weld, derust after brush antirust paint together, high-temperature heat-resistance underwater paint twice；Carry out heat-insulation layer by foam process, heat-insulation layer section with Fixed plate plane fills heat-resistant adhesive, and the black pod disk that diameter is less than fixed board diameter is close into fixed plate and sealed with black pod pipe Weldering.If especially set out is the thick walled steel tube that this 12 meters of steel pipes are more than pipeline wall thickness from wall thickness, grade of steel is 30 or No. 35 carbon Steel, then yield limit and elastic deformation amount can be big, and effectively modeling deflection can also increase, and be conducive to replacing valve and extension to use the longevity Life.Certain bolt grade of steel should also be improved.

The 8th, prefabricated pipeline valve is put into the design attitude of well with crane, support is carried out, fix and aligns level Measurement, by fixed plate and it is precast reinforced weld, propped up box board, according to the above ratio casting concrete, fully smash oar and drive bubble out of, Carry out maintenance.

9th, treat that maintenance expires, the steel plate between extraction flange changes heat-resisting waterproof asbestos rubber pad, and (4mm is thick, be screwed to 3mm), mounting flange bolt is helped with special top plate and hydraulic jack.

If the 10, level of ground water is high, valve well entire body will do waterproof layer, i.e., just waterproof layer is done when doing well bottom Come, after well is accomplished fluently, the waterproof layer done up is spread along well wall, especially pipeline position must bond and then secondary pour Note, it is ensured that underground water is not immersed in well.

11st, 3 meters of tabias are backfilled and are tamped in well two ends pipeline axial direction and be necessary.

The present invention has broken the way of conventional valves well, two poling boreholes wall has been made into two anchor blocks respectively, originally The borehole wall not stressed nowadays stress, then can it bear pipeline and expand with heat and contract with cold the thermal expansion power and cold drawn power of generationHeat expansion is cold The well safety effects that the power produced that contracts is done to the present invention mainly have the consideration of three aspects；One is solid to the poling borehole wall Shearing and extruding destruction at fixed board, another is the effect to the overall push-and-pull displacement of valve well, then it is exactly the broken of heat transfer to have It is bad.

" intelligence of giving birth Method for Installation " safety and stability is analyzed：

First say first；The cylindrical axial direction of fixed plate by pipeline it is cold drawn after can be to borehole wall generation one on the inside of fixed plate well Individual shearing force, this point is weakest link, and it is also carefree (see the represented h of b-b ' in Figure of description 4 that this puts carefree other positions Width).Front said the poling borehole wall be made " sufficiently large " imply that according to the size of former anchor block to do, especially pipeline axial direction side To thickness, thickness originally is out of question, and present is also just out of question！In order to save volume and obtain operable sky in maximum well Between, it there is no harm in us and calculate the size of thermal expansion of pipeline power " f " and the required shearing force " F " of well destruction and extruding force " F ' " Do one to compare, it is determined whether safety.

If a diameter of " D " radius of fixed plate is " R ", well inner wall thickness be " h ", shear stress " τ, be unit area " A " The size of upper suffered power " F ", there is relational expression

F=τ × D × π × h 1 --- 2

By taking DN600 pipelines as an example：

If taking fixed board diameter D=1150mm, well inwall h=300mm；No. 525 cement correspondence concrete grades are C35, Its shear strength is >=55MPa (55 × 10⁶Pa) (or 55 × 10⁶Newton/meter²),

Substituting into 1-2 formulas has

F=55 × 10⁶Newton/meter²× 1.15 × 3.14 × 0.3=59.5815 × 10⁶Newton

DN600 pipelines are because internal force f that temperature change is produced is relevant with the flow elastic modulus E of steel pipe, also cut with steel pipe Area s sizes are relevant；

F=E × S 1-3

The modulus of elasticity of No. 20 carbon steels is 236 × 10⁶Pa (Newton/meters²), DN600 pipe diameters are 600mm, and external diameter is 630mm；Substitute into 1-3 formulas

F=0.166743 × 10⁶Newton

Fixed plate to well inwall in addition to having shear action, and fixed plate also has a pressure destruction to well inwall Power " F ' ", C35 concrete crushing strengths are 31MPa, corresponding fixed plate suqare S ',Substitute into 1-3 Formula has

By data above is visible, steel pipe because internal force f that temperature change is produced be far smaller than can caused by borehole wall shearing fracture Or the power F and F ' needed for extruding destruction.So steel pipe cold conditions or it is hot when, concrete body wall will not be produced after fixed plate stress Destruction！

Above is the axial collapse that pipeline axial direction internal force is produced to well inwall, the expansive force of pipeline radial direction is to well inwall Also there is an expansion damage effect.First pipeline from 0 DEG C of -120 DEG C of diameter change be 0.84672mm, due to by fixed plate Constraint, this varying dimensions do not work (or can be ignored), and the change of fixed plate diameter dimension turns to 1.5456mm, is also Allow in carbon steel in elastic deformation size range, and because being constrained by concrete walling, there will not be substantive change in size, it is right Reinforced concrete body does not constitute destruction.

Another is exactly that heat transfer no can produce destruction to the borehole wall

If fixed plate is directly welded on pipeline, heat by fixed plate can be passed to reinforced concrete well by 120 DEG C of hot water Son, if not taking any heat-insulated means, well can accelerate the aging of the black pod pipes of PVC, reinforcing bar under continuous high temperature effect Because of high temperature change and concrete body generation " de- bone " phenomenon, long term well waterproof damage layer can be made even to intake.

As shown in Figure of description 5, fixed plate is made into deck and second plate, between with heat insulation layer it is heat-insulated, transmitted by high temperature The heat-transfer effect on the deck of influence can be reduced under the isolation of heat insulation layer, generally we control the temperature of second plate 70 DEG C with Under, this temperature is all safe to jacket tube and concrete well.

Besides pipeline expands with heat and contract with cold, the internal force f of generation is acted in fixed plate, and whether the displacement stability to valve well pacifies Entirely

Illustrate first, the inner tensions that the pipeline in well is produced are that displacement two-way, to well does not work, well is sub The thrust of outer axial both sides is also equity, and middle valve well is not worked yet, only first and end and pipeline rout Well of change just has the not reciprocity of thrust.The internal force f for above drawing pipeline is：

F=0.166743 × 10⁶Newton

=1.66743 × 10⁴Kilogram=16.6743 tons

It is computed, the volume of DN600 corresponding reinforced concrete well of pipeline is about 29 cubic metres, about 72 tons of weight (press 2.5 tons/m³)。

The coefficient of friction of concrete surface and rubble basal plane can get 0.8, then the resistance of about 72 tons of heavy wells is about 57.6 tons；It is far longer than 16.6743 tons of internal force, in addition the compacting of well surrounding tabia, therefore its stability is safe.

Where meaning of the present invention：

The way cost that the disposable input of way of the present invention is more conventional will be higher by, but this is meaningful necessary Input, its result plays a part of and the benefit of generation will be far longer than this part of input, is worth！Its meaning exists In：

1st, it changes the thinking that disposable directly buried hot-water piping anchor block and valve well are separately designed in the past, with steel Elastic deformation theory and deformation size of expanding with heat and contract with cold, 60 DEG C of medium temperatures are taken to offset pre-tension deformations, this cleverly designs handle Two separate components of anchor block and valve well are combined together, unprecedented creative and uniqueness.

2nd, due to the present invention reliability, pipe network is rationally set up, sectional door becomes simple and the advantages outweigh the disadvantages, be conducive to fortune Row and maintenance, are conducive to pipe network wet preservation and suppress detection, using water wisely.

3rd, solve the problem of conventional valve well underground water immerses long-term ponding, it is ensured that valve well is dried and is possibly realized, save The tedious works such as maintenance that draw water are removed.

4th, the problem of having prevented well internal water accumulation immersion heat-insulation layer corrosion pipeline corrosion valve.

5th, due to being dried in well, being easy to replacing valve maintenance and operation.

6th, the thorny problem of valve can not be changed by solving disposable directly buried hot-water piping in the past.

7th, design considerations and guarantee are provided for old pipe network improving increase valve, solve causes pipe network because setting up valve Preheating internal force eliminates the problem of caused pipe network is broken.

8th, the valve well life-span installed using the present invention, up to more than 60 years, greatly increases the use longevity of pipe network Life, and operation and maintenance cost can be reduced.

Summary, the present invention reduce the design, safe operation, maintenance maintenance to heating industry buried heat water pipe net Operating cost has extremely profound significance and great benefit.

Searches of Patent Literature situation：

Applicant through retrieval, up to the present, do not find the same type of the same name that is authorized through Patent Office of the People's Republic of China or approximate Patented invention is delivered, and does not also find there is same or similar paper publishing on books and periodicals magazines at different levels.Therefore the present invention is exclusive It is pioneering.

With greetings！

Claims (3)

1. direct buried hot water pipeline anchor block integrally mixes Method for Installation with valve well, anchor block is with valve well integrative-structure by pipe Road (1)；Polyurethane insulation coating (2), PVC plastic anticorrosive coat (3), poling borehole wall A (4), flange gasket (5), flange (6), fixed plate B (7), poling borehole wall B (8), well lid (9), side wall (10), valve (11), manhole cover (12), fixed plate A (13), the nest that catchments (14), Shaft bottom (15), bolt (16), sealing ring (17) composition；Characterized in that, anchor block A, anchor block B, well lid (9), side wall (10), Shaft bottom (15) is poured by armored concrete to be formed, and fixed plate A (13), fixed plate B (7) include fixed plate " first " plate (20), fixed Plate " second " plate (18) and heat insulation layer (19), fixed plate " first " plate (20) are welded on pipeline (1), fixed plate " second " plate (18) and pre- It is embedded in anchor block A and anchor block B, the effect of existing anchor block plays the role of valve well again；Poling borehole wall A (4) and fixed plate A (13) composition one anchor block A, poling borehole wall B (8) and fixed plate B (7) constitutes another anchor block B；Anchor block A and anchor block B is all one group and spacing has certain size requirement, and is connected to form one by side wall (10) and shaft bottom (15).

2. direct buried hot water pipeline anchor block as claimed in claim 1 integrally mixes Method for Installation with valve well, it is characterised in that： After flange (6) is welded with pipeline (1), flange (6) has pre-connection with valve flanges, and flange gasket (5) is clipped in flange (6) and valve Blending bolt (16) is fastened between flange, and one end of valve flanges is connected with a flange (6), the middle heat-resisting asbestos rubber of placement Pad；One end connection of the other end of valve flanges and another flange (6), middle placement metal mat, pier to be fixed pour curing period It is full, change metal mat into asbestos rubber pad, metal mat, asbestos rubber pad are one kind of flange gasket (5).

3. direct buried hot water pipeline anchor block as claimed in claim 1 integrally mixes Method for Installation with valve well, it is characterised in that： There is heat insulation layer (19) to be separated by between fixed plate " first " plate (20) and the fixed plate " second " plate (18), for reducing hot biography Lead.