Impact-resistant steam pipeline connecting elbow

Abstract

The utility model relates to the field of urban heat supply pipe network systems, in particular to an impact-resistant steam pipeline connecting elbow, which achieves the effect of the impact-resistant steam pipeline connecting elbow and comprises a steam pipeline and a drain pipeline, the steam pipeline comprises a straight pipe and a connecting elbow, the straight pipe is horizontally connected to one side of the lower end of the connecting elbow, and the drain pipeline is connected to one side of the lower end of the connecting elbow. The end, close to the bent pipe, of the straight pipe is fixedly connected with a condensation water tank, one end of the drainage pipeline is communicated with the condensation water tank, the other side of the drainage pipeline is wound around the outer portion of the straight pipe and extends to the outer portion of the steam pipeline along the connecting bent pipe, and a drainage structure is arranged on the drainage pipeline. And the impact-resistant assembly is arranged outside the joint of the straight pipe and the connecting elbow. The utility model provides an impact-resistant steam pipeline connecting elbow which is used for solving the problems that investment is high, the displacement of a pipeline at the elbow is large, and the impact-resistant effect is poor.

Description

Technical Field

[0001] The utility model relates to the technical field of urban heating pipe network systems, in particular to an impact-resistant steam pipeline connecting elbow. Background Art

[0002] When the steam pipeline is laid directly in the ground and then turned to the overhead laying, a drain well will be built before the return to achieve the installation of the drain device before the steam pipeline is vertically raised. According to the requirements of 8.5.5 in the "Urban Heating Pipeline Design Standard" CJJ / T 34-2022, the start-up drain and regular drain devices should be installed before the low point and vertically raised pipe section of the steam pipeline.

[0003] like Figure 4 and Figure 5 As shown, the steam pipeline in the prior art has the following problems:

[0004] 1. The construction investment of underground drainage well chamber is high.

[0005] 2. The displacement of the pipe at the elbow of the steam pipe is large, and the displacement of the drain pipe at the tee where it is connected to the main pipe is large, which makes it easy for the drain pipe branch to crack.

[0006] 3. The structure of the joints of the steam pipe is relatively simple. Due to the large impact force of steam, poor impact resistance will affect the service life of the steam pipe.

[0007] Although the steam trap is a very small component in the entire heating system, the steam pipe drainage is related to the safe operation of the steam pipe. If there is a problem with the steam trap, the entire steam pipeline will be shut down, affecting the safe and stable operation of the heating system. The above situations will increase project investment and affect the safety of pipeline operation. Utility Model Content

[0008] In order to solve the above technical problems, technicians in this field provide an impact-resistant steam pipe connecting elbow to solve the problems of high investment, large pipe displacement at the elbow, and poor impact resistance proposed in the above background technology.

[0009] The utility model provides an impact-resistant steam pipeline connecting elbow, which achieves the effect of an impact-resistant steam pipeline connecting elbow;

[0010] Including steam pipes and drain pipes;

[0011] The steam pipe comprises a straight pipe and a connecting elbow, wherein the straight pipe is horizontally connected to one side of the lower end of the connecting elbow, one end of the straight pipe close to the connecting elbow is fixedly connected to a condensate tank, one end of the drain pipe is connected to the condensate tank, the other side of the drain pipe is arranged around the outside of the straight pipe and extends to the outside of the steam pipe along the connecting elbow, and a drainage structure is provided on the drain pipe;

[0012] It also includes an impact-resistant component arranged outside the connection between the straight pipe and the connecting elbow;

[0013] The impact-resistant component comprises a sleeve, which is arranged outside the connection between the straight pipe and the connecting elbow.

[0014] Preferably: the impact-resistant component also includes a damper and a clamping seat, one end of the damper is connected to the inner wall of the sleeve, the clamping seat is connected to the other end of the damper, and the clamping seat is arranged to fit the outer wall of the steam pipe, and the damper is a self-resetting damper.

[0015] Preferably: the impact-resistant component also includes a limit seat and a support rod, a mounting plate with a protrusion is provided at the connection between the straight pipe and the connecting elbow, the support rod is L-shaped and one end is connected to the inner wall of the sleeve, the limit seat is connected to the other end of the support rod, and the limit seat is in contact with the mounting plate.

[0016] Preferably, the outer diameters of both ends of the sleeve are gradually reduced, the clamping seat is arranged in an arc shape and an anti-slip protrusion is provided on the side close to the steam pipe.

[0017] Preferably, the drain pipe is laid along the steam pipe, and the thermal expansion and contraction of the drain pipe moves along with the thermal expansion and contraction of the steam pipe, thereby reducing the stress concentration on the tee of the drain pipe and improving the safe operation of the pipeline.

[0018] Preferably, a rainproof cap is provided on the top of the steam pipe, and the rainproof cap is sealedly connected to the steam pipe.

[0019] Preferably: the outer wall of the steam pipe is provided with a heat-insulating layer, and the drain pipe is provided on the inner wall of the heat-insulating layer.

[0020] Preferably: the drainage structure includes a main stop valve, and a main stop valve is arranged on the top of the drain pipe through a seamless steel pipe. The main stop valve is connected to two-way stop valves, one group of stop valves is connected to the drain valve to a safe place, and the other group of stop valves is directly connected to a safe place.

[0021] Technical effects and advantages of the utility model:

[0022] 1. Change the normal setting idea of ​​the steam pipe drain device, set a condensate tank at the bottom of the steam pipe elbow, lay the steam pipe connected to the tank along the elbow to the ground in the insulation layer, and set a drain device on the ground.

[0023] 2. The drain pipe is laid along the elbow, and the thermal expansion and contraction of the drain pipe moves together with the thermal expansion and contraction of the main pipe, reducing the stress concentration on the tee of the drain pipe and improving the safe operation of the pipeline.

[0024] 3. By setting the impact-resistant components at the connection between the straight pipe and the connecting elbow, the shock-absorbing effect of the damper is utilized to reduce the vibration and impact on the steam pipeline, thus achieving a good shock-absorbing and pressure-resistant effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of an impact-resistant steam pipe connecting elbow provided in an embodiment of the present application;

[0026] Figure 2 yes Figure 1 A schematic cross-sectional view of the center;

[0027] Figure 3 yes Figure 2 Schematic diagram of the cross section along the B direction;

[0028] Figure 4 It is a schematic diagram of the internal structure of the impact-resistant component provided by the present application;

[0029] Figure 5 This is the prior art provided by this application. Figure 1 ;

[0030] Figure 6 This is the prior art provided by this application. Figure 2 ;

[0031] In the figure:

[0032] 1. Steam pipe, 2. Drain pipe, 3. Condensate tank, 4. Main stop valve, 5. Branch stop valve, 5', branch stop valve, 6. Drain valve, 7. Rain cap, 8. Insulation layer, 9. Impact-resistant components;

[0033] 11. straight pipe, 12. connecting elbow;

[0034] 91. sleeve, 92. damper, 93. clamping seat, 94. limit seat, 95. support rod, 96. anti-slip protrusion, 97. mounting plate. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0036] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside in the figures shown in the present utility model, and are explained here together.

[0037] The connection method can be bonding, welding, bolt connection, etc., depending on actual needs.

[0038] Example 1

[0039] See also Figures 1 to 3 In this embodiment, an impact-resistant steam pipe connecting elbow is provided, including a steam pipe 1 and a drain pipe 2.

[0040] The steam pipe 1 includes a straight pipe 11 and a connecting elbow 12. The straight pipe 11 is horizontally connected to the lower end of the connecting elbow 12. One end of the straight pipe 11 close to the connecting elbow 12 is fixedly connected to a condensate tank 3. One end of the drain pipe 2 is connected to the condensate tank 3. The other side of the drain pipe 2 is arranged around the outside of the straight pipe 11 and extends to the outside of the steam pipe 1 along the connecting elbow 12. The drain pipe 2 is provided with a drainage structure.

[0041] Preferably: the drainage structure includes a main stop valve 4, and the top of the drain pipe is connected with a main stop valve 4 through a seamless steel pipe. The main stop valve 4 is connected to two-way stop valves, one of which is a stop valve 5' connected to the drain valve 6 to a safe place, and the other group of stop valves 5 is directly connected to a safe place.

[0042] The top of the steam pipe is provided with a rainproof cap 7, and the rainproof cap 7 is sealed and connected to the steam pipe. The outer wall of the steam pipe is provided with a heat-insulating layer 8, and the drain pipe is provided on the inner wall of the heat-insulating layer 8.

[0043] As an example to further illustrate:

[0044] refer to Figure 1 and Figure 4 As shown, this embodiment also includes an impact-resistant component 9, which is arranged outside the connection between the straight pipe 11 and the connecting elbow 12.

[0045] The impact-resistant assembly 9 includes a sleeve 91, which is arranged outside the connection between the straight pipe 11 and the connecting elbow 12, and the outer diameters of both ends of the sleeve 91 are gradually reduced. The impact-resistant assembly 9 also includes a damper 92 and a clamping seat 93, one end of the damper 92 is connected to the inner wall of the sleeve 91, and the clamping seat 93 is connected to the other end of the damper 92, and the clamping seat 93 is arranged to fit the outer wall of the steam pipe 1, and the clamping seat 93 is arranged in an arc shape and a non-slip protrusion 96 is provided on the side close to the steam pipe 1.

[0046] Furthermore, the impact-resistant component 9 also includes a limit seat 94 and a support rod 95. A protruding mounting plate 97 is provided at the connection between the straight pipe 11 and the connecting elbow 12. The support rod 95 is L-shaped and one end is connected to the inner wall of the sleeve 91. The limit seat 94 is connected to the other end of the support rod 95, and the limit seat 94 is in contact with the mounting plate 97.

[0047] The shock absorbing effect of the damper 92 is utilized to reduce the vibration and impact on the steam pipe 1, thereby achieving a good shock absorbing and pressure resistant effect. The damper 92 adopts a self-resetting damper 92, which can play a buffering and shock absorbing effect when subjected to external impact. When the internal pipeline is impacted, the damper 92, the clamping seat 93, the support rod 95 and the limit seat 94 are utilized to play a limiting role, thereby playing an impact resistant role.

[0048] When using this structure, the normal setting idea of ​​the steam pipe drain device is changed, and a condensate tank 3 is set at the bottom of the steam pipe 1 elbow. The steam pipe of the condensate tank 3 is laid along the elbow to the ground in the insulation layer 8, and a drain device is set on the ground.

[0049] The drain pipe 2 is laid along the elbow, and the thermal expansion and contraction of the drain pipe 2 moves together with the thermal expansion and contraction of the main pipe, which reduces the stress concentration on the tee of the drain pipe and improves the safe operation of the pipeline.

[0050] The steam drain elbow provided in this solution replaces the traditional drain well plus compensation elbow, providing a compensating drain elbow with low investment and safer pipeline stress, thereby improving the safety of pipeline network operation and reducing project investment.

[0051] As an example to further illustrate:

[0052] refer to Figure 5 As shown, the methods of insulation and outer protection pipe at the elbow refer to the methods of compensation elbow. An insulation layer is arranged outside the working pipe (steam pipe), a special-shaped composite silicate felt is arranged outside the insulation layer, and a compensation outer sleeve is arranged outside the composite silicate felt.

[0053] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. An impact-resistant steam pipe connecting elbow, comprising a steam pipe and a drain pipe, characterized in that: The steam pipe comprises a straight pipe and a connecting elbow, wherein the straight pipe is horizontally connected to one side of the lower end of the connecting elbow, one end of the straight pipe close to the connecting elbow is fixedly connected to a condensate tank, one end of the drain pipe is connected to the condensate tank, the other side of the drain pipe is arranged around the outside of the straight pipe and extends to the outside of the steam pipe along the connecting elbow, and a drainage structure is provided on the drain pipe; It also includes an impact-resistant component arranged outside the connection between the straight pipe and the connecting elbow; the impact-resistant component includes a sleeve, and the sleeve is arranged outside the connection between the straight pipe and the connecting elbow.

2. The impact-resistant steam pipe connecting elbow according to claim 1, characterized in that: The impact-resistant component also includes a damper and a clamping seat, one end of the damper is connected to the inner wall of the sleeve, the clamping seat is connected to the other end of the damper, and the clamping seat is arranged in contact with the outer wall of the steam pipe.

3. The impact-resistant steam pipe connecting elbow according to claim 2, characterized in that: The impact-resistant component also includes a limit seat and a support rod. A mounting plate with a protrusion is provided at the connection between the straight pipe and the connecting elbow. The support rod is L-shaped and one end is connected to the inner wall of the sleeve. The limit seat is connected to the other end of the support rod, and the limit seat is in contact with the mounting plate.

4. The impact-resistant steam pipe connecting elbow according to claim 3, characterized in that: The outer diameters of the two ends of the sleeve are gradually reduced, the clamping seat is arranged in an arc shape and a side close to the steam pipe is provided with an anti-slip protrusion.

5. The impact-resistant steam pipe connecting elbow according to claim 1, characterized in that: The drainage structure includes a main stop valve, and a main stop valve is arranged on the top of the drain pipe through a seamless steel pipe. The main stop valve is connected to two-way stop valves, one group of stop valves is connected to the drain valve to a safe place, and the other group of stop valves is directly connected to a safe place.

6. The impact-resistant steam pipe connecting elbow according to claim 1, characterized in that: A rainproof cap is arranged on the top of the steam pipe, and the rainproof cap is sealedly connected to the steam pipe.

7. The impact-resistant steam pipe connecting elbow according to claim 1, characterized in that: The outer wall of the steam pipeline is provided with a heat-insulating layer, and the drain pipe is arranged on the inner wall of the heat-insulating layer.

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