阅读说明：本技术 蒸汽管网专用全密封套筒补偿器 (Full-sealed sleeve compensator special for steam pipe network ) 是由 朱根龙 朱印 于 2021-09-23 设计创作，主要内容包括：本发明涉及一种补偿器,具体地说,涉及蒸汽管网专用全密封套筒补偿器。其包括芯管,芯管与供热管道连接,所述芯管位于供热管道热介质流向的一侧设有外壳管,连接后外壳管套设在预留部外,并与其形成容置空腔,容置空腔内设置柔性密封层,用来补偿供热管道由于热膨胀引起的轴向的位移。本发明中通过设置的二道封层和四道封层配合形成了纵横两向的补偿力,实现了多轴向的补偿,大大提高了柔性密封层的补偿能力,也适应了更恶劣的环形使用,并且柔性石墨与橡胶圈的结合提高了柔性密封层的密封性,避免连接处发生泄漏。(The invention relates to a compensator, in particular to a full-sealed sleeve compensator special for a steam pipe network. The heat supply pipe comprises a core pipe, wherein the core pipe is connected with a heat supply pipeline, an outer shell pipe is arranged on one side of the core pipe, which is positioned in the flow direction of a heat medium of the heat supply pipeline, the outer shell pipe is sleeved outside a reserved part after being connected, an accommodating cavity is formed by the outer shell pipe and the outer shell pipe, and a flexible sealing layer is arranged in the accommodating cavity and used for compensating axial displacement of the heat supply pipeline caused by thermal expansion. According to the flexible graphite sealing layer, the two sealing layers and the four sealing layers are matched to form longitudinal and transverse compensation force, multi-axial compensation is achieved, the compensation capacity of the flexible sealing layer is greatly improved, the flexible graphite sealing layer is suitable for worse annular use, the sealing performance of the flexible sealing layer is improved due to the combination of the flexible graphite and the rubber ring, and leakage at the connecting position is avoided.)

1. Special totally enclosed sleeve compensator of steam pipe network, including core pipe (100), core pipe (100) are connected with heat supply pipeline, its characterized in that: the heat supply pipeline heat medium flow direction side that core pipe (100) are located is equipped with shell pipe (200), shell pipe (200) radius is greater than core pipe (100) radius, core pipe (100) are equipped with compressing flange (130) outward in addition, compressing flange (130) are close to core pipe (100) tip and form the reservation portion, shell pipe (200) are close to core pipe (100) one end also and are equipped with compressing flange (130), two compressing flange (130) are connected, and connect back shell pipe (200) cover and establish outside the reservation portion, and form the holding cavity rather than, set up flexible sealing layer (300) in the holding cavity, be used for compensating the axial displacement that the heat supply pipeline arouses because of the thermal energy.

2. The fully-sealed sleeve compensator special for steam pipe networks according to claim 1, wherein: the outer position that corresponds the holding cavity of shell pipe (200) is equipped with notes and fills mouthful (220), and flexible sealing layer (300) are filled into the holding cavity through notes fill mouthful (220) to the injection end threaded connection who fills mouthful (220) has sealed cap (221).

3. The fully-sealed sleeve compensator special for steam pipe networks according to claim 2, wherein: the flexible sealing layer (300) comprises foam, sponge and flexible graphite.

4. The fully-sealed sleeve compensator special for steam pipe networks according to claim 2, wherein: one side of the filling port (220) is provided with an adjusting cap (222), and the aperture in the filling port (220) is adjusted by rotating the adjusting cap (222).

5. The fully-sealed sleeve compensator special for steam pipe networks according to claim 1, wherein: the core tube (100) comprises a connecting portion (110) and a telescopic portion (120), the telescopic portion (120) is located on one side close to the outer shell tube (200), and the inner diameter of the telescopic portion (120) is smaller than that of the connecting portion (110).

6. The fully sealed sleeve compensator of claim 5, wherein: the connecting part (110) and the telescopic part (120) are connected to form a V-shaped groove, and a rubber ring (400) is arranged in the V-shaped groove.

7. The fully sealed sleeve compensator of claim 5, wherein: the end part of the outer shell pipe (200) is bent inwards to form a pressing part (210), and the inner diameter of the outer edge of the pressing part (210) is the same as that of the telescopic part (120).

8. The fully-sealed sleeve compensator special for steam pipe networks according to claim 1, wherein: the flexible sealing layer (300) comprises a first sealing layer (310), a second sealing layer (320), a third sealing layer (330), a fourth sealing layer (340) and a fifth sealing layer (350), and the flexible sealing layer is sequentially arranged from one side to the other side in the accommodating cavity in the flowing direction of the heat medium.

9. The steam pipe network dedicated fully-sealed sleeve compensator of claim 8, wherein: the first sealing layer (310), the third sealing layer (330) and the fifth sealing layer (350) are sealed by flexible graphite, the second sealing layer (320) is an O-shaped sealing ring, and the fourth sealing layer (340) is a Y-shaped sealing ring.

10. The fully sealed sleeve compensator of claim 5, wherein: the end part of the telescopic part (120) is provided with a drop-proof ring (121), and the drop-proof ring (121) and the telescopic part (120) are of an integral structure.

Technical Field

The invention relates to a compensator, in particular to a full-sealed sleeve compensator special for a steam pipe network.

Background

The full-sealed sleeve compensator special for the steam pipe network is connected with the heat supply pipeline.

Chinese patent publication No.: CN209892940U discloses a steam pipe network thermal compensation structure, including expansion end steam pipe and stiff end steam pipe, the grafting is provided with the water conservancy diversion cover in the stiff end steam pipe, through set up the water conservancy diversion cover between expansion end steam pipe and stiff end steam pipe, highly compressed soda strikes on the water conservancy diversion cover, and the water conservancy diversion cover is enough to resist the instantaneous high pressure that soda strikes and form, and self can not burst to effectively prevent that the compensator from receiving soda to strike and damaging.

However, the existing compensator cannot compensate the heat supply pipeline, the sealing performance is poor, and gas in the heat supply pipeline is easy to leak.

Disclosure of Invention

The invention aims to provide a fully-sealed sleeve compensator special for a steam pipe network, which aims to solve the problems that the compensator in the background art cannot compensate a heat supply pipeline, has poor sealing performance and is easy to leak gas in the heat supply pipeline.

In order to achieve the purpose, the special full-sealed sleeve compensator for the steam pipe network comprises a core pipe, wherein the core pipe is connected with a heat supply pipeline, an outer shell pipe is arranged on one side, located in the flow direction of a heat medium of the heat supply pipeline, of the core pipe, the radius of the outer shell pipe is larger than that of the core pipe, a compression flange is arranged outside the core pipe, the compression flange is close to the end portion of the core pipe to form a reserved portion, a compression flange is also arranged at one end, close to the core pipe, of the outer shell pipe, the two compression flanges are connected, the outer shell pipe is sleeved outside the reserved portion after connection, a containing cavity is formed between the outer shell pipe and the reserved portion, and a flexible sealing layer is arranged in the containing cavity and used for compensating axial displacement of the heat supply pipeline caused by thermal expansion.

As a further improvement of the technical scheme, an injection port is arranged at a position, corresponding to the accommodating cavity, outside the shell pipe, the flexible sealing layer is injected into the accommodating cavity through the injection port, and the injection end of the injection port is in threaded connection with a sealing cap.

As a further improvement of the technical scheme, the flexible sealing layer comprises foam, sponge and flexible graphite.

As a further improvement of the technical scheme, an adjusting cap is arranged on one side of the filling port, and the aperture in the filling port is adjusted by rotating the adjusting cap.

As a further improvement of the technical scheme, the core pipe comprises a connecting part and a telescopic part, the telescopic part is positioned on one side close to the shell pipe, and the inner diameter of the telescopic part is smaller than that of the connecting part.

As a further improvement of the technical scheme, the connecting part and the telescopic part are connected to form a V-shaped groove, and a rubber ring is arranged in the V-shaped groove.

As a further improvement of the technical scheme, the end part of the shell pipe is inwards bent to form a pressing and holding part, and the inner diameter of the outer edge of the pressing and holding part is the same as the inner diameter of the telescopic part.

As a further improvement of the technical scheme, the flexible sealing layer comprises a first sealing layer, a second sealing layer, a third sealing layer, a fourth sealing layer and a fifth sealing layer, and the flexible sealing layer is sequentially arranged from one side to the other side of the heat medium flowing direction in the accommodating cavity.

As a further improvement of the technical scheme, the first sealing layer, the third sealing layer and the fifth sealing layer are sealed by flexible graphite, the second sealing layer is an O-shaped sealing ring, and the fourth sealing layer is a Y-shaped sealing ring.

As a further improvement of the technical scheme, the end part of the telescopic part is provided with a separation-preventing ring, and the separation-preventing ring and the telescopic part are of an integral structure.

Compared with the prior art, the invention has the beneficial effects that:

in this special totally enclosed sleeve compensator of steam pipe network, form the compensation power of moving about freely and quickly two directions through two seals and four seals cooperations that set up, realized multiaxis to compensation, improved the compensation ability of flexible sealing layer greatly, also adapted to harsher annular and used to the leakproofness of flexible sealing layer has been improved in the combination of flexible graphite and rubber circle, avoids the junction to take place to leak.

Drawings

FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present invention;

FIG. 2 is a schematic view of the core tube structure of example 1 of the present invention;

FIG. 3 is a schematic view of the structure of a casing tube according to embodiment 1 of the present invention;

FIG. 4 is an exploded view of the entire structure of embodiment 1 of the present invention;

FIG. 5 is a sectional view showing an overall side structure of embodiment 1 of the present invention;

FIG. 6 is a schematic side view of the whole structure of embodiment 1 of the present invention;

FIG. 7 is a schematic structural view of a flexible sealing layer according to example 2 of the present invention;

fig. 8 is a schematic view of the structure of a pressing flange and a housing pipe in embodiment 3 of the present invention.

The various reference numbers in the figures mean:

100. a core tube; 110. a connecting portion; 120. a telescopic part; 121. the anti-drop ring; 130. compressing the flange; 131. a hold-down bolt; 140. a guide ring;

200. a housing tube; 210. a pressing part; 220. filling the opening; 221. a sealing cap; 222. an adjusting cap;

300. a flexible sealing layer; 310. a sealing layer is formed; 320. two sealing layers; 330. three sealing layers; 340. four sealing layers; 350. five sealing layers;

400. a rubber ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "one pass" and "two passes" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "one," "two," or "one" may explicitly or implicitly include one or more of that feature. In the description of the invention.

Referring to fig. 1-8, the present embodiment aims to provide a fully sealed sleeve compensator for a steam pipe network, which includes a core pipe 100 (the core pipe 100 is made of 316L forged stainless steel), the core pipe 100 is connected to a heat supply pipeline, the direction indicated by the arrow in fig. 5 is the flow direction of the heat medium in the heat supply pipeline after entering the core pipe 100, a casing pipe 200 is disposed on the core pipe 100 at the side where the heat medium in the heat supply pipeline flows, the radius of the casing pipe 200 is larger than that of the core pipe 100, a pressing flange 130 is disposed outside the core pipe 100, a reserved portion is formed at the end of the pressing flange 130 close to the core pipe 100, a pressing flange 130 is also disposed at one end of the casing pipe 200 close to the core pipe 100, two pressing flanges 130 are connected by a pressing bolt 131 (the pressing flange 130 has a structure for preventing the tension from falling off, so as to improve the stability of the connection of the two pressing flanges 130), and the casing pipe 200 is sleeved outside the reserved portion after the connection, and forms a receiving cavity with it, and a flexible sealing layer 300 is arranged in the receiving cavity to compensate the axial displacement of the heat supply pipeline caused by thermal expansion.

Example 1

Referring to fig. 1-6, a filling port 220 is disposed outside the outer shell tube 200 corresponding to the receiving cavity, the filling port 220 is communicated with the receiving cavity, and a sealing cap 221 is screwed to an injection end of the filling port 220 to seal the filling port 220, when in use, the sealing cap 221 is unscrewed, and then a flexible sealing layer 300 is filled in the flexible sealing layer 300, the flexible sealing layer 300 is made of foam, or flexible particles such as sponge or flexible graphite, and can be poured out after injection, so as to facilitate replacement of the flexible sealing layer 300, in addition, an adjusting cap 222 is disposed on one side of the filling port 220, and the aperture in the filling port 220 is adjusted by rotating the adjusting cap 222 to control the injection speed.

In addition, the core tube 100 includes the connection portion 110 and the expansion portion 120, the expansion portion 120 is located at a side close to the outer shell tube 200, and the inner diameter of the expansion portion 120 is smaller than that of the connection portion 110, thereby compressing the heat supply pipeline, and improving the stability of the connection, in addition, the connection portion 110 and the expansion portion 120 are connected to form a "V" shaped groove, a rubber ring 400 is arranged inside the groove to seal the connection portion, in order to ensure the synchronism of the compression of the end portion of the outer shell tube 200 and the expansion portion 120, the end portion of the outer shell tube 200 is bent inwards to form the pressure holding portion 210, and the outer edge inner diameter of the pressure holding portion 210 is the same as the inner diameter of the expansion portion 120.

Example 2

In order to improve the compensation capability of the flexible sealing layer 300, please refer to fig. 7, which is different from embodiment 1, in that the flexible sealing layer 300 includes a first sealing layer 310, a second sealing layer 320, a third sealing layer 330, a fourth sealing layer 340 and a fifth sealing layer 350, and the sealing layers are sequentially disposed from one side to the other side of the flow direction of the thermal medium in the accommodating cavity, wherein:

the first sealing layer 310, the third sealing layer 330 and the fifth sealing layer 350 are sealed by flexible graphite, the high temperature resistance of the flexible graphite is more than or equal to 200 ℃, the first sealing layer 310 is in an isosceles triangle structure, and two waist sides of the first sealing layer 310 are provided with rubber rings 400;

the second seal layer 320 is made of fluororubber or composite material O-shaped seal ring to compensate longitudinal axial displacement;

the four seal layers 340 adopt fluororubber or composite material Y-shaped sealing rings to compensate transverse axial displacement;

therefore, the two sealing layers 320 and the four sealing layers 340 are matched to form longitudinal and transverse compensation force, multi-axial compensation is achieved, the compensation capacity of the flexible sealing layer 300 is greatly improved, the flexible sealing layer is suitable for more severe annular use, the sealing performance of the flexible sealing layer 300 is improved due to the combination of the flexible graphite and the rubber ring 400, and leakage at the joint is avoided.

In addition, the end of the telescopic part 120 is provided with a slip-off preventing ring 121, and the slip-off preventing ring 121 and the telescopic part 120 are of an integral structure, the slip-off preventing ring 121 ensures that the core tube 100 is not pulled out when the connection use accident happens, and the side of the telescopic part 120 entering the casing tube 200 is provided with a guide ring 140 to increase the stability and reliability of the operation of the compensator.

Example 3

In order to improve the sealing performance of the connection between the housing tube 200 and the external pressing flange 130, please refer to fig. 8, wedge-shaped grooves are respectively formed at the end of the housing tube 200 and the position where the pressing flange 130 is attached to the top wall of the housing tube 200, and a rubber ring 400 is arranged in the wedge-shaped grooves, so as to ensure the sealing performance of the connection between the pressing flange 130 and the housing tube 200.

It should be noted that the rubber ring 400 is made of a fluororubber material.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.