Elbow for high-temperature prefabricated directly-buried thermal insulation pipe fitting

Abstract

The utility model discloses a high-temperature prefabricated directly-buried thermal insulation pipe fitting elbow which is characterized in that a through groove is formed in an elbow pipe, a partition plate is fixedly connected to one side of the through groove, buffer plates are connected to the side walls, close to the two ends, of the through groove, an external connection groove is formed in the side, away from the through groove, of the partition plate, and end adjusting pipes are fixedly connected to the positions, close to the two ends, of the elbow pipe; the utility model has the following advantages: gas or liquid entering the bent pipe can be shunted through the arranged external connection grooves, but the sealing plate can be opened when the pressure is greater than the pressing force of the torsion spring, so that the gas or liquid can be discharged from the bent pipe, and the gas or the liquid can be discharged from the bent pipe when the pressure is greater than the pressing force of the torsion spring. Gas or liquid enters the external groove to flow, the pressure of flowing in the through groove is shared, impact damage of flowing substances to the inner wall of the through groove is reduced, the flowing gas or liquid is blocked through the flow blocking block in the external groove to reduce the flow speed, then the flowing gas or liquid is injected into the through groove through the other opened sealing plate, and the flow speed buffering effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of a pipe fitting connection elbow structure, in particular to a high-temperature prefabricated direct-buried thermal insulation pipe fitting elbow. Background Art

[0002] Direct buried insulated pipe is an insulated transmission pipe buried directly underground. When laying the pipe, elbows are required for turning and laying. It is also one of the necessary components for laying and turning all pipes. There are many sizes and shapes of elbows according to actual needs.

[0003] The elbow of the insulated pipe needs to have thermal insulation performance, so high-temperature resistant materials are needed. However, the structure of the elbow itself is simple, and the elbow is at the conveying corner, so it will be subject to greater impact force. The single structure cannot cope with it well, which will cause greater wear to the elbow in the long run. For this reason, high-temperature prefabricated direct-buried insulated pipe elbows are proposed. Utility Model Content

[0004] The technical solution adopted by the utility model to solve the technical problem is: a high-temperature prefabricated direct-buried thermal insulation pipe elbow, including a bent pipe, a through groove is opened inside the bent pipe, a partition is fixedly connected to one side of the through groove, side walls of the through groove close to both ends are connected to buffer plates, an external groove is opened on the side of the partition away from the through groove, end adjustment pipes are fixedly connected to the bent pipe close to both ends, a middle section adjustment pipe is fixedly connected in the middle of the bent pipe, and external pipes are inserted into the ends of the bent pipe at both ends.

[0005] As a preferred technical solution of the utility model, a movable groove is opened on the side wall opposite to the partition plate, and elastic parts are fixedly connected to the side walls in the movable groove and close to the two ends. One end of the buffer plate extends into the movable groove and is fixedly connected to one end of the elastic part.

[0006] As a preferred technical solution of the utility model, the opposite side walls in the external groove are evenly fixedly connected with flow blocks, one end of the flow block is a concave arc structure, and the two ends of the partition close to the buffer plate are rotatably connected with sealing plates through torsion springs, and the torsion springs are unidirectional torsion springs, and the opening and closing directions of the two sealing plates are opposite.

[0007] As a preferred technical solution of the utility model, the bent pipe is a multi-section structure, and is spliced ​​and fixed to each other through an end adjusting tube and a middle adjusting tube. The end adjusting tube and the middle adjusting tube are bendable rigid corrugated tubes, and the bent pipe is bent and adjusted through the end adjusting tube and the middle adjusting tube.

[0008] As an optimal technical solution of the utility model, the external tube is a flexible arc-shaped tube, and the curvature of the external tube is the same as the curvature of the internal groove of the bent pipe. A connecting groove is opened through the middle of the external tube. The connecting groove is a conical structure and a conical step plate is fixedly connected to the inner wall. The bent pipe is connected to the pipeline through the external tube.

[0009] The utility model has the following advantages: the gas or liquid entering the bent pipe can be diverted by setting up an external groove, but when the pressure is greater than the pressing force of the torsion spring, the sealing plate will be opened, and the gas or liquid flows into the external groove, sharing the pressure of the flow in the through groove, reducing the impact damage caused by the flowing material to the inner wall of the through groove, and the flowing gas or liquid is blocked by the blocking block in the external groove to reduce the flow velocity, and then injected into the through groove through another opened sealing plate, thereby achieving the effect of flow velocity buffering without affecting the normal transportation of the material, and at the same time, buffer plates are installed at two impact points on the side wall of the partition, and the buffer plates can be buffered by elastic parts to reduce the impact force, thereby increasing the service life of the bent pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional structural schematic diagram of a preferred embodiment of the utility model;

[0011] Figure 2 It is a schematic diagram of the planar structure of a preferred embodiment of the utility model;

[0012] Figure 3 This is a schematic diagram of the planar structure of an external pipe of a preferred embodiment of the utility model;

[0013] Figure 4 It is a preferred embodiment of the utility model Figure 2 Enlarged structural diagram at A in the middle.

[0014] Explanation of the reference numerals: 1. bent pipe; 2. end adjustment pipe; 3. middle adjustment pipe; 4. through groove; 5. partition; 6. external groove; 7. flow blocking block; 8. sealing plate; 9. buffer plate; 10. external tube; 11. connecting groove; 12. conical step plate; 13. movable groove; 14. elastic member. DETAILED DESCRIPTION

[0015] The utility model will be further described below in conjunction with the accompanying drawings.

[0016] Please refer to Figure 1-4The utility model high-temperature prefabricated direct buried thermal insulation pipe elbow comprises an elbow 1, a through groove 4 is provided inside the elbow 1, a partition 5 is fixedly connected to one side of the through groove 4, a buffer plate 9 is connected to the side walls of the through groove 4 near both ends, an external groove 6 is provided on the side of the partition 5 away from the through groove 4, an end regulating pipe 2 is fixedly connected to both ends of the elbow 1, a middle regulating pipe 3 is fixedly connected to the middle of the elbow 1, and an external pipe 10 is inserted into the ends of the elbow 1 at both ends;

[0017] A movable groove 13 is provided on the side wall opposite to the buffer plate 9, and the side walls in the movable groove 13 and near the two ends are fixedly connected with elastic members 14, one end of the buffer plate 9 extends into the movable groove 13 and is fixedly connected to one end of the elastic member 14, and the opposite side walls in the external groove 6 are evenly fixedly connected with flow blocking blocks 7, one end of the flow blocking block 7 is a concave arc structure, and the two ends of the partition 5 near the buffer plate 9 are rotatably connected with sealing plates 8 through torsion springs, and the torsion springs are unidirectional torsion springs, and the opening and closing directions of the two sealing plates 8 are opposite.

[0018] The technical effect of this scheme is as follows: the elbow 1 is connected between two pipes. When gas or liquid enters the elbow 1 through the pipe, it will first impact on the first buffer plate 9. The buffer plate 9 will contract under force to relieve the impact force and reduce the damage to the elbow 1 caused by the impact. Then it will continue to flow along the through groove 4 and hit the second buffer plate 9. At this time, the buffer plate 9 will contract as mentioned above to relieve the impact force, thereby greatly reducing the probability of the elbow 1 being damaged by the impact and improving the service life of the elbow 1. When the pressure is too high, the corresponding sealing plate 8 will be broken and the liquid or gas will enter the external groove 6 and flow along the external groove 6 to share the pressure of the flow in the through groove 4. At the same time, the relief of the flow block 7 can reduce the flow rate of the gas or liquid in the external groove 6, and finally it will be injected into the through groove 4 to merge with the mainstream and continue to flow, which can further reduce the damage of the flowing material to the elbow 1.

[0019] The elbow 1 is a multi-section structure, and is spliced ​​and fixed to each other through the end adjustment tube 2 and the middle adjustment tube 3. The end adjustment tube 2 and the middle adjustment tube 3 are bendable rigid corrugated tubes. The elbow 1 is bent and adjusted through the end adjustment tube 2 and the middle adjustment tube 3. The external tube 10 is a flexible arc tube, and the curvature of the external tube 10 is the same as the curvature of the internal groove 4 of the elbow 1. A connecting groove 11 is opened in the middle of the external tube 10. The connecting groove 11 is a conical structure and a conical step plate 12 is fixedly connected to the inner wall. The elbow 1 is connected to the pipeline through the external tube 10.

[0020] The technical effect of this solution is: the external pipe 10 is connected to the end of the elbow 1, so that when pipes of different sizes need to be connected, it is inserted into the connecting groove 11, and rests on different steps of the conical step plate 12 according to the size. The pipes of different sizes are stably connected without the need for additional reducers, and the actual connection is also relatively convenient.

[0021] Specifically, when the utility model is used, one end of the elbow 1 is first connected to one of the pipes, and then the other is aligned and connected to it, so that the function of laying the pipe turns is realized. After the laying is completed, liquid or gas can be transported. When it enters the through groove 4, it will impact on the two buffer plates 9 in succession. The cooperation of the buffer plates 9 and the elastic member 14 can reduce the force caused by the impact, thereby reducing the damage to the elbow 1 caused by the impact force and improving the service life of the elbow 1. When the pressure is too high, the liquid and gas will break through the sealing plate 8 and enter the external groove 6, and flow in the external groove 6 to share the pressure in the through groove 4. After the flow is blocked by the flow block 7, the gas or liquid in the external groove 6 will be re-injected into the through groove 4 and merge with the mainstream to continue to be transported forward;

[0022] When it is necessary to connect with pipes of different sizes, the external pipe 10 is first inserted into the two ends of the elbow 1, and then plugged into the corresponding pipe end. The pipe end will rest on the steps at different positions of the conical step plate 12 to achieve the connection between pipes of different sizes and the elbow 1. There is no need to use additional reducers or use elbows 1 of corresponding sizes. The bending degree of the elbow 1 can be adjusted through the end adjustment pipe 2 and the middle adjustment pipe 3, so that one elbow 1 has multiple functions, reducing the use of other elbows 1 with different traditional structures and thus reducing costs.

[0023] The above are only preferred implementations of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

[0024] Other parts of the present invention not described in detail belong to the prior art and will not be described in detail here.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A high-temperature prefabricated direct-buried thermal insulation pipe elbow, comprising a pipe elbow (1), characterized in that: The bent pipe (1) is provided with a through groove (4) inside, a partition (5) is fixedly connected to one side of the through groove (4), the side walls of the through groove (4) close to both ends are connected to buffer plates (9), the partition (5) is provided with an external groove (6) on the side away from the through groove (4), the bent pipe (1) is fixedly connected to end adjustment pipes (2) close to both ends, the middle of the bent pipe (1) is fixedly connected to a middle section adjustment pipe (3), and external pipes (10) are inserted into the ends of both ends of the bent pipe (1).

2. The high-temperature prefabricated direct-buried thermal insulation pipe elbow according to claim 1, characterized in that: A movable groove (13) is provided on the side wall of the partition plate (5) opposite to the buffer plate (9), and elastic members (14) are fixedly connected to the side walls in the movable groove (13) and close to both ends, and one end of the buffer plate (9) extends into the movable groove (13) and is fixedly connected to one end of the elastic member (14).

3. The high-temperature prefabricated direct-buried thermal insulation pipe elbow according to claim 1, characterized in that: The opposite side walls in the external connection groove (6) are evenly fixedly connected with a flow block (7), one end of which is a concave arc structure, and both ends of the partition plate (5) close to the buffer plate (9) are rotatably connected with a sealing plate (8) via a torsion spring, and the torsion spring is a one-way torsion spring, and the opening and closing directions of the two sealing plates (8) are opposite.

4. The high-temperature prefabricated direct-buried thermal insulation pipe elbow according to claim 1, characterized in that: The bent pipe (1) is a multi-section structure and is spliced ​​and fixed to each other through an end adjustment pipe (2) and a middle adjustment pipe (3); the end adjustment pipe (2) and the middle adjustment pipe (3) are bendable rigid corrugated pipes; the bent pipe (1) is bendable and adjusted through the end adjustment pipe (2) and the middle adjustment pipe (3).

5. The high-temperature prefabricated direct-buried thermal insulation pipe elbow according to claim 1, characterized in that: The external pipe (10) is a flexible arc-shaped pipe, and the curvature of the external pipe (10) is the same as the curvature of the internal through groove (4) of the curved pipe (1). A connecting groove (11) is provided in the middle of the internal part of the external pipe (10). The connecting groove (11) is a conical structure and a conical step plate (12) is fixedly connected to the inner wall. The curved pipe (1) is connected to the pipeline through the external pipe (10).

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