CN209532068U - The running gate system of half bend pipe of fibre reinforced - Google Patents

Abstract

The utility model discloses a kind of running gate systems of half bend pipe of fibre reinforced, belong to transporting elbow field.The utility model includes sand mold, which includes the half bent tube type chamber that several are parallel to each other and are horizontally arranged；Half bent tube type chamber is obtained after one type chamber upper mold and type chamber lower die molding, the half bent tube type chamber is for being poured half bend pipe of fibre reinforced；Half bend pipe of fibre reinforced includes half elbow body, and half elbow body is a bend pipe along the half axially cut, and half elbow body is half of the bend pipe close to bending direction side, and bending direction is the direction of bend pipe from the inside to the outside；Half elbow body is designed as thickeing from ends A to intermediate B and thicken with two sides C to intermediate D；It is provided with enhancing lug boss in the middle part of half elbow body medial surface, accompanies carbon fibre web layer in the enhancing lug boss.The purpose of this utility model is that carbon fibre material to be effectively combined to the service life for improving bend pipe on existing metal winding pipe.

Description

The running gate system of half bend pipe of fibre reinforced

Technical field

The utility model relates to a kind of conveyings of the industries such as building, mine, metallurgy, electric power, petroleum, coal, grain processing Bend pipe structure, more specifically to a kind of running gate system of half bend pipe of fibre reinforced.

Background technique

The forming technique of bend pipe mainly has casting and forming, compression molding etc., they are all to pass through casting by molding die Or hot cold-press process profiling generation；Either any machinery equipment and pipeline, it is most of all to use bend pipe, mainly to Convey various materials；The material of bend pipe has the materials such as cast iron, stainless steel, steel alloy, malleable cast iron, carbon steel, non-ferrous metal and plastics Matter；In the industries such as building, mine, metallurgy, electric power, petroleum, coal, grain processing, the conveying of material is to pass through pipeline pressure Conveying, delivery pipe is by biggish pressure and serious abrasion.Therefore there is higher synthesis to delivery pipe, especially bridge piece Performance requirement improves the service life of bend pipe, has become the problem for being difficult to capture.

Have related art scheme about wear resistant and impact resistant bend pipe in the prior art to disclose, such as patent publication No.: CN 204717206U, publication date: on October 21st, 2015, invention and created name are as follows: it is a kind of it is outer it is whole, interior two points of two-layer equations are wear-resisting anti- Bend pipe is impacted, this application discloses a kind of outer whole, interior two points of two-layer equations wear resistant and impact resistant bend pipes, it is by two points in outer entirety The double-deck bend pipe, two wear-resisting connecting flanges, seam flange composition；This outer whole, interior two points of two-layer equations wear resistant and impact resistant bend pipe is used In the adverse circumstances of the industries such as building, mine, metallurgy, electric power, petroleum, coal, grain processing, it is designed as outer whole, two points interior Double-deck unique texture, is divided into protective layer and wearing layer, and wear-resisting property is good, long service life, and cost performance is high, easy to accomplish large quantities of Amount production, quality is reliable and stable, and security performance is high.But above-mentioned application case is: half bend pipe therein Although the protection with wearing layer, the wear-resisting property of wearing layer are limited to existing steel, so that half can not be further increased The service life of bend pipe.

Carbon fibre material itself has wearability, high intensity, rigidity good and outstanding advantages of flexibility is strong, is based on carbon fiber The above-mentioned outstanding advantages for tieing up material, propose for carbon fibre material to be combined in the manufacturing process of bend pipe in the prior art, such as specially Sharp publication number: CN 102514169A, publication date: on 06 27th, 2012, invention and created name are as follows: using carbon fiber as enhancement layer Silicon rubber extrusion rubber tube and its manufacturing process, this application the following steps are included: on the mold core of desired size squeeze out one layer Inner glue layer；Carbon cloth is surface-treated, the content of its surface polar groups is improved；By surface treated carbon fiber Cloth weaves as enhancement layer or is wrapped in the inner glue layer；One layer of outer glue-line is squeezed out on carbon cloth, is coated on carbon cloth Surface；Molding finishes, and gained sebific duct is vulcanized, and obtains finished product, wherein inner glue layer and outer glue-line include silicon rubber.This application with Carbon cloth manufactures silicon rubber wrapping rubber tube as enhancement layer, and it is low to not only solve existing silicon rubber pipe intensity, voltage endurance capability The problem of difference, and the heat resistance of silicon rubber pipe is improved, the resistance to mild resistance to pressure energy of silicon rubber is played to greatest extent. But this application is disadvantageous in that: the silicon rubber extrusion rubber tube of this application is only applicable on non-metallic material bend pipe Composite carbon fibre abrasion material, is not suitable for the manufacture of metal winding pipe.

For another example sharp publication number: CN 103256436A, publication date: on 08 21st, 2013, invention and created name are as follows: a kind of Carbon fiber conveyance conduit and preparation method thereof for delivering concrete, its composition of carbon fiber conveyance conduit in this application The content of middle carbon fibre material is 100%, and the pipe thickness of standard type straight tube is 4mm or more, the pipe thickness of thickening type straight tube For 7mm or more；The thinnest part of bend pipe tube wall is 7mm or more, and thickness is 14mm or more；Carbon fiber conveyance conduit in this application Production method mainly comprise the steps that S1. oxidation processes, obtain pre-oxidation carbon fiber silk；S2. charing process, including medium temperature Charing and latter two first stage of high temperature carbonization, obtain graphited carbon fiber silk；S3. netting obtains blocking carbon cloth；S4. Cementation molding, obtains carbon fiber piping articles.Using carbon fiber conveyance conduit made of this application production method, there is quality Gently, long service life, outstanding advantages of impact is small, the pressure loss is small, and the caliber of conveyance conduit can increase, and be conducive to mention High production rate.But this application is disadvantageous in that: carbon fiber conveyance conduit uses carbon fiber material completely in this application Material manufacture, production cost are excessively high, it is difficult to be widely used to promote.

Also such as sharp publication number: CN 202691407U, publication date: on 01 23rd, 2013, invention and created name are as follows: a kind of Macromolecule enhance composite abrasion-proof elbow, the abrasion-proof bent tube of this application include wear-resisting steel elbow body and fastening be coated on it is curved The layer of glass fiber or carbon fibre reinforced high-molecular layer of tube body outer peripheral surface, this application overcome single bend pipe due to toughness not Sufficient bring safety problem.But this application is disadvantageous in that: wrapping carbon fibre reinforced high-molecular layer in this application It is overlying on elbow body outer peripheral surface, although improving the toughness of bend pipe, the wearability inside bend pipe can not be improved.

In conclusion how carbon fibre material is effectively combined to the use for improving bend pipe on existing metal winding pipe Service life, be in the prior art urgent need to resolve the technical issues of.

Utility model content

1. utility model technical problems to be solved

The purpose of this utility model is that carbon fibre material is effectively combined on existing metal winding pipe to improve bend pipe Service life.

2. technical solution

In order to achieve the above objectives, technical solution provided by the utility model are as follows:

Half bend pipe of fibre reinforced of the utility model, including half elbow body, half elbow body are a bend pipe edge The half axially cut, and half elbow body is half of the bend pipe close to bending direction side, the bending direction is The direction of bend pipe from the inside to the outside；Half elbow body, which is designed as thickeing from ends A to intermediate B, to be become with two sides C to intermediate D It is thick；It is provided with enhancing lug boss in the middle part of the half elbow body medial surface, accompanies carbon fibre web layer in the enhancing lug boss.

It is further improved as the utility model, the enhancing lug boss outer surface is to half elbow body medial surface The arcwall face of direction protrusion.

It is further improved as the utility model, the carbon fiber stratum reticulare is convex to half elbow body lateral surface direction The arc risen.

The running gate system of half bend pipe of fibre reinforced of the utility model, including sand mold, the sand mold include that several are mutual Half parallel and horizontal positioned bent tube type chamber, and the opening of the half bent tube type chamber is downward；Under one type chamber upper mold and a type chamber A half bent tube type chamber is obtained after mould molding, the half bent tube type chamber is for being poured above half bend pipe of fibre reinforced.

It further improves, is connected in the respective side of two neighboring half bent tube type chamber same as the utility model Ingate, the ingate are connected to by the cross gate above it with sprue, and sprue is connected to the sprue cup above it.

Further improved as the utility model, the ingate be one along half bent tube type chamber side camber item Shape chamber.

It is further improved as the utility model, its upside of the cross gate is on half bent tube type cavity length direction Two inclined-planes extended from centre to both sides, its downside of the cross gate are the arcwall face with cooperation on the upside of the ingate.

It is further improved as the utility model, each ingate includes several segments, between adjacent two sections of ingates Filled with clay layer.

It is further improved as the utility model, the centre on the upside of the half bent tube type chamber is equipped with riser, the riser It is up big and down small trapezoidal chamber with half bent tube type chamber connectivity part.

3. beneficial effect

Using technical solution provided by the utility model, compared with prior art, there is following remarkable result:

(1) in the utility model, enhancing lug boss is provided in the middle part of half elbow body medial surface, and in enhancing protrusion Carbon fibre web layer is accompanied in portion, so that the wearability of half elbow body medial surface center effectively improves, wherein enhancing is convex The portion of rising protrudes from the medial surface of half elbow body, so that material carries out CONTACT WITH FRICTION, double of bend pipe sheet with enhancing lug boss first Play the role of effective protection in the middle part of internal side, meanwhile, the installation for being set as carbon fiber stratum reticulare for enhancing lug boss provides item Part enables carbon fiber stratum reticulare effective position to be mounted on half elbow body medial surface near middle, thus by carbon fibre material It is effectively combined in half elbow body, enhances lug boss and the mating reaction of carbon fiber stratum reticulare improves making for half elbow body jointly Use the service life.

(2) in the utility model, enhancing lug boss outer surface is the arcwall face to half elbow body medial surface direction protrusion, The design of the arcwall face can effectively reduce the frictional force between enhancing lug boss outer surface and material, be conducive to material along arc Shape face surface passes through, meanwhile, enhancing lug boss outer surface is the arcwall face of outwardly convex, is rubbed with what is be subject in the middle part of arcwall face The friction that wiping impact is larger, arcwall face two sides are subject to is impacted lesser operating condition and is matched, longer in half elbow body use After time, enhance the arcwall face being gradually worn down at lug boss to being adapted with half elbow body medial surface, and carbon fiber at this time Stratum reticulare is the arc to half elbow body lateral surface direction protrusion, so that the carbon fiber stratum reticulare of half elbow body medial surface center Uniform to leak out, entire half elbow body medial surface center has effectively played carbon under the protection of carbon fiber stratum reticulare The characteristics such as wear-resisting of fiber web layer, significantly improve the service life of half elbow body.

Detailed description of the invention

It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also To obtain other relevant attached drawings according to these attached drawings.

Fig. 1 is the structural schematic diagram of existing half bend pipe；

Fig. 2 is the cross section structure schematic diagram of half bend pipe in Fig. 1 (F show the bending direction of bend pipe in figure)；

Fig. 3 is the vertical section structure schematic diagram of half bend pipe in Fig. 1；

Fig. 4 is that the schematic diagram based on existing half bend pipe structure improved confinement in the utility model (is enhancing protrusion at S in figure The setting position in portion 101)；

Fig. 5 is the vertical section structure schematic diagram of half bend pipe of fibre reinforced in the utility model；

Fig. 6 is the vertical section structure schematic diagram of half bent tube type chamber in the utility model；

Fig. 7 is the schematic view of the front view of sand mold in the utility model；

Fig. 8 is the overlooking structure diagram (being not drawn into sprue cup and sprue) of sand mold in the utility model；

Fig. 9 is the structural schematic diagram (being not drawn into half bent tube type chamber) in Fig. 8 along Z-direction；

Figure 10 is the flow chart of the manufacturing method of half bend pipe of fibre reinforced in the utility model.

Label declaration in schematic diagram: 1, half elbow body；101, enhance lug boss；102, carbon fiber stratum reticulare；2, half is curved Tubular cavity；201, riser；202, sprue cup；203, cross gate；204, ingate；3, type chamber upper mold；4, type chamber lower die.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Therefore, below to providing in the accompanying drawings The detailed description of the embodiments of the present invention be not intended to limit the range of claimed invention, but only Indicate the selected embodiment of the utility model.Based on the embodiments of the present invention, those of ordinary skill in the art are not having Every other embodiment obtained under the premise of creative work is made, is fallen within the protection scope of the utility model.

For the content for further appreciating that the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.

Embodiment 1

Have related art scheme about wear resistant and impact resistant bend pipe in the prior art to disclose, the applicant is in 2016 12 The moon has declared the related art scheme (application number: 201611268911.8), wherein half is curved about half method for manufacturing bent pipe on the 31st Structural reference Fig. 1-3 of pipe.But existing half bend pipe of irony is limited to itself material, is difficult further to improve itself use Service life.Carbon fibre material itself has wearability, high intensity, rigidity good and outstanding advantages of flexibility is strong, is based on carbon fiber The above-mentioned outstanding advantages of material, propose for carbon fibre material to be combined in the manufacturing process of bend pipe in the prior art, but not Find a kind of scientific scheme that carbon fibre material is effectively combined to and improves bend pipe service life on existing metal winding pipe.

With reference to Fig. 4-10, the manufacturing method of half bend pipe of fibre reinforced of the present embodiment, comprising the following steps: step A, original Material configuration: casting raw material is got out；Step B, the running gate system production of half bend pipe of fibre reinforced；Step C, raw material melting: will Casting raw material melting is the molten iron of casting；Step D, carbon fiber stratum reticulare 102 is installed；Step E, moulding by casting；Step F, it is heat-treated: Certain heat treatment is carried out to half bend pipe of fibre reinforced of moulding by casting.

In step A, starting material element is by mass percentage include the following: and C:3.6-3.8%, Cr:26~28%, Mo:0.3~ 0.5%, Cu:0.4~0.5%, Ni:0.6~0.8%, V:0.3~0.5%, Si, Mn≤0.8%, P, S≤0.04%, Remaining is Fe.The raw material of above-mentioned mass percent cooperates, and verifies through actual production, the wear resistance of high-chromium iron cast out It greatly improves, service life is 3 times or more of common high-manganese steel, and product hardness can reach HRC:63~65.

In step B, the running gate system of half bend pipe of fibre reinforced includes the sand mold made by clay, if the sand mold includes The dry half bent tube type chamber 2 for being parallel to each other and being horizontally arranged, and the opening of half bent tube type chamber 2 is downward；One type chamber upper mold 3 and one Type chamber lower die 4 obtains half bent tube type chamber 2 after molding, the half bent tube type chamber 2 according to the structure fabrication of half bend pipe of fibre reinforced, Half bent tube type chamber 2 is for being poured half bend pipe of fibre reinforced；Half bend pipe of fibre reinforced includes half elbow body 1, half bend pipe sheet Body 1 is a bend pipe along the half axially cut, and half elbow body 1 is half of the bend pipe close to bending direction side, bending Direction is the direction of bend pipe from the inside to the outside (F has marked the bending direction of bend pipe in Fig. 2)；Half elbow body 1 be designed as from Ends A thickens to intermediate B and thickens with two sides C to intermediate D；Enhancing lug boss is provided in the middle part of half elbow body, 1 medial surface 101, carbon fibre web layer 102 is accompanied in the enhancing lug boss 101, wherein enhancing 101 outer surface of lug boss is to half elbow body The arcwall face of 1 medial surface direction protrusion, carbon fiber stratum reticulare 102 are the arc to half elbow body, 1 lateral surface direction protrusion.

In step D, (that is, by carbon fiber in the molten iron after carbon fibre web to be gradually immersed into step C melting from bottom to top first Net is vertical to be placed, and is then moved and is immersed in the molten iron of lower section gradually downward from top), then carbon fibre web is taken out, carbon Carbon fiber stratum reticulare 102 is formed after web cooled and solidified, carbon fiber stratum reticulare 102 is bent into arc first, then by carbon fiber For enhancing the region of 101 moulding by casting of lug boss in 102 snap-in type chamber lower die 4 of stratum reticulare, and controlling carbon fiber stratum reticulare 102 is to type The arc of 3 direction of chamber upper mold protrusion.

In actual use, the place mainly worn by material impact is half elbow body, 1 medial surface to bend pipe Middle part in the present embodiment, is provided with enhancing lug boss 101, and in enhancing lug boss in the middle part of half elbow body, 1 medial surface Carbon fibre web layer 102 is accompanied in 101, so that the wearability of half elbow body, 1 medial surface center effectively improves, wherein Enhancing lug boss 101 protrudes from the medial surface of half elbow body 1, connects so that material carries out friction with enhancing lug boss 101 first Effective protection is played the role of at touching, double of 1 medial surface of elbow body middle part, meanwhile, enhancing lug boss 101 is set as carbon fibre web The installation of layer 102 provides condition, and 102 effective position of carbon fiber stratum reticulare is mounted in half elbow body, 1 medial surface Near portion, to carbon fibre material is effectively combined in half elbow body 1, enhances lug boss 101 and carbon fiber stratum reticulare 102 is matched Cooperate the service life for improving half elbow body 1 jointly.

In the present embodiment, enhancing 101 outer surface of lug boss is the arcwall face to half elbow body, 1 medial surface direction protrusion, The design of the arcwall face can effectively reduce the frictional force between enhancing 101 outer surface of lug boss and material, and it is suitable to be conducive to material Arcwall face surface pass through, meanwhile, enhancing 101 outer surface of lug boss be outwardly convex arcwall face, with arcwall face in the middle part of The friction that the friction impact being subject to is larger, arcwall face two sides are subject to is impacted lesser operating condition and is matched, in half elbow body 1 After using for a longer period, enhance the arcwall face being gradually worn down at lug boss 101 to being adapted with half elbow body, 1 medial surface, And carbon fiber stratum reticulare 102 is (to enhance at lug boss 101 at this time to the arc of half elbow body, 1 lateral surface direction protrusion at this time It is the arcwall face being recessed inwardly with carbon fiber stratum reticulare 102, the two keeps relatively parallel state) so that in half elbow body 1 The carbon fiber stratum reticulare 102 of side center uniformly leaks out, and entire half elbow body, 1 medial surface center is in carbon fiber stratum reticulare Under 102 protection, the characteristics such as wear-resisting of carbon fiber stratum reticulare 102 are effectively played, making for half elbow body 1 is significantly improved Use the service life.

When being combined to carbon fibre material in half elbow body 1, a distinct issues are that carbon fibre material is placed in When in half bent tube type chamber 2, on the one hand carbon fibre material is easy to be washed away by molten iron in molten steel pouring course, is on the other hand difficult to protect The unfolded state in planar is handled, in the step D of the present embodiment, after carbon fibre web is gradually immersed into melting from bottom to top first In molten iron, then carbon fibre web is taken out, forms carbon fiber stratum reticulare 102 after carbon fibre web cooled and solidified, above method can incite somebody to action Carbon fibre web flexible is prefabricated into the carbon fiber stratum reticulare 102 with certain rigidity, and carbon fiber stratum reticulare 102 is then bent into arc Shape finally by the region in 102 snap-in type chamber lower die 4 of carbon fiber stratum reticulare for enhancing 101 moulding by casting of lug boss, and controls carbon fiber Tieing up stratum reticulare 102 is the arc to 3 direction protrusion of type chamber upper mold, wherein for enhancing 101 moulding by casting of lug boss in type chamber lower die 4 Region, on the one hand entirely enhance lug boss 101 for moulding by casting, on the other hand being caught in for carbon fiber stratum reticulare 102, It is middle because carbon fiber stratum reticulare 102 has certain elasticity, both ends can be easily stuck in type chamber lower die 4 for enhancing lug boss The region of 101 moulding by casting.

Embodiment 2

The manufacturing method of half bend pipe of fibre reinforced of the present embodiment, it is substantially the same manner as Example 1, it is further: phase It is connected with the same ingate 204 in the respective side of adjacent two and half bent tube type chambers 2, which is poured by horizontal above it Road 203 is connected to sprue, and sprue is connected to the sprue cup 202 above it；Ingate 204 is one along half bent tube type chamber 2 The bar shaped chamber of side camber；Its upside of cross gate 203 is two extended on half bent tube type chamber, 2 length direction from centre to both sides A inclined-plane, its downside of cross gate 203 for the arcwall face that cooperates on the upside of ingate 204.

In the present embodiment, ingate 204 be one along half bent tube type chamber, 2 side camber bar shaped rectangular cavity, cross gate 203 Its upside is two inclined-planes from centre to both sides that extends on half bent tube type chamber, 2 length direction from, its downside of cross gate 203 be with The arcwall face cooperated on the upside of ingate 204 is designed by the special construction of ingate 204 and cross gate 203, can make molten iron It uniformly gently flows into half bent tube type chamber 2, to significantly improve the final castability of half bend pipe of fibre reinforced, avoids Large-tonnage product defect.

Embodiment 3

The manufacturing method of half bend pipe of fibre reinforced of the present embodiment, it is substantially the same manner as Example 2, it is further: every A ingate 204 includes several segments, is filled with clay layer between adjacent two sections of ingates 204.

In the present embodiment, it includes several segments that each ingate 204, which is arranged, fills clay between adjacent two sections of ingates 204 Layer, due to ingate 204 using interval segmentation structure so that the respective side of two neighboring half bent tube type chamber 2 be not easy because The entirety of ingate 204 solidifies and micro-strain occurs, to greatly improve the dimensional accuracy of half bend pipe of fibre reinforced casting.

Embodiment 4

The manufacturing method of half bend pipe of fibre reinforced of the present embodiment, it is substantially the same manner as Example 3, it is further: half It is up big and down small trapezoidal that the centre of the upside of bent tube type chamber 2, which is equipped with riser 201, the riser 201 and half bent tube type chamber, 2 connectivity part, Chamber.

In the present embodiment, the centre of half bent tube type chamber, 2 upside is equipped with riser 201, and the riser 201 and half bent tube type chamber 2 connect Logical place is up big and down small trapezoidal chamber, and by the setting of trapezoidal chamber, molten iron can be efficiently entering in half bent tube type chamber, 2 upside Between, the effect of riser feeding is given full play to, the problem for avoiding product core loose.

Schematically the utility model and embodiments thereof are described above, description is not limiting, attached drawing Shown in be also one of the embodiments of the present invention, actual structure is not limited to this.So if this field Those of ordinary skill enlightened by it, without deviating from the purpose of the present invention, not inventively design Frame mode similar with the technical solution and embodiment, all should belong to the protection range of the utility model.

Claims (8)

1. the running gate system of half bend pipe of fibre reinforced, it is characterised in that including sand mold, which includes that several are parallel to each other And half horizontal positioned bent tube type chamber (2), and the opening of the half bent tube type chamber (2) is downward；One type chamber upper mold (3) and a type A half bent tube type chamber (2) is obtained after chamber lower die (4) molding, the half bent tube type chamber (2) is curved for being poured fibre reinforced half Pipe；

Half bend pipe of fibre reinforced includes half elbow body (1), and half elbow body (1) is that a bend pipe is cut along axial Half, and half elbow body (1) be the bend pipe close to bending direction side half, the bending direction be bend pipe by The direction of Inside To Outside；Half elbow body (1) is designed as thickeing from ends A to intermediate B and thicken with two sides C to intermediate D； It is provided with enhancing lug boss (101) in the middle part of half elbow body (1) medial surface, accompanies carbon in the enhancing lug boss (101) Fiber web layer (102).

2. the running gate system of half bend pipe of fibre reinforced according to claim 1, it is characterised in that: the enhancing lug boss (101) outer surface is the arcwall face to half elbow body (1) medial surface direction protrusion.

3. the running gate system of half bend pipe of fibre reinforced according to claim 2, it is characterised in that: the carbon fiber stratum reticulare (102) for half elbow body (1) lateral surface direction protrusion arc.

4. the running gate system of half bend pipe of fibre reinforced according to claim 3, it is characterised in that: two neighboring half bend pipe The same ingate (204) are connected in the respective side of type chamber (2), which passes through the cross gate (203) above it It is connected to sprue, sprue is connected to the sprue cup (202) above it.

5. the running gate system of half bend pipe of fibre reinforced according to claim 4, it is characterised in that: the ingate (204) for one along half bent tube type chamber (2) side camber bar shaped chamber.

6. the running gate system of half bend pipe of fibre reinforced according to claim 5, it is characterised in that: the cross gate (203) its upside is two inclined-planes extended on half bent tube type chamber (2) length direction from centre to both sides, the cross gate (203) its downside is the arcwall face with cooperation on the upside of the ingate (204).

7. the running gate system of half bend pipe of fibre reinforced according to claim 6, it is characterised in that: each ingate (204) include several segments, clay layer is filled between adjacent two sections of ingates (204).

8. the running gate system of half bend pipe of fibre reinforced according to claim 7, it is characterised in that: the half bent tube type chamber (2) centre on the upside of is equipped with riser (201), and the riser (201) and half bent tube type chamber (2) connectivity part are up big and down small trapezoidal Chamber.