Self-adjusting steam injection device

Abstract

The utility model discloses a self-adjusting steam injection device which comprises a steam port and an adjusting device. A connecting assembly is arranged between the adjusting device and the steam port; the adjusting device sequentially comprises an air inlet cylinder, an adjusting cylinder and an air outlet cylinder from left to right, and the interiors are all through; the right side of the pressure spring extends into the air outlet cylinder and is connected with a baffle plate; an annular buffer plate is arranged in the air outlet cylinder and located on the right side of the baffle, and a plurality of vent holes are evenly distributed in the buffer plate along the circumference. The baffle is pushed to move through the pressure spring by utilizing the pressure when steam enters, so that the steam is buffered and dispersed when the pressure is higher, and the influence on the inner wall of a pipeline is reduced; when the steam pressure is small, the channel is closed, and condensate water caused by waste heat is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of steam transportation, in particular to an autonomously regulating steam injection device. Background Art

[0002] Steam pipes are a common facility in modern life and industrial production. They are generally made of steel-jacketed steel insulated pipes, which are composed of steel pipes, anti-corrosion outer jacket steel pipes, and ultra-fine glass wool filled in the middle, or they are made of graphite, calcium silicon tile pipe shell and filled with polyurethane foam.

[0003] Due to the special operational requirements of steam pipes, they need to have the basic properties of being waterproof, leakproof, impermeable, and pressure-resistant. Therefore, the inner diameter and shape of steam pipes are non-adjustable. When the steam pipe is in use, the amount of steam decreases in the later stage of steam injection, and the temperature in the steam pipe decreases accordingly, which is prone to produce condensed water and affects the inner wall of the pipe. In addition, when the steam starts to be injected, the pressure in the pipe rises due to the instantaneous temperature increase, which may cause damage to the pipe due to excessive stress caused by thermal expansion and contraction. However, in the prior art, when steam is injected into the pipe, the flow rate is usually only adjusted at the air inlet port. There is no better way to circumvent the above-mentioned problems, and there is room for improvement. Utility Model Content

[0004] The utility model aims to solve the technical problem existing in the prior art that the change of steam amount at the beginning and end of steam injection affects the pipeline, and provides a steam injection device capable of avoiding the above influence.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is: an autonomously regulating steam injection device, comprising a steam port and a regulating device; a connecting assembly is provided between the regulating device and the steam port; the regulating device comprises an air inlet cylinder, an regulating cylinder and an air outlet cylinder from left to right, and the interiors are all connected; the inner diameter of the regulating cylinder is smaller than that of the air inlet cylinder and the air outlet cylinder; a pressure spring is provided inside the regulating cylinder, the left side of the pressure spring is fixedly connected to the regulating cylinder, and the right side extends into and out of the air cylinder and is connected with a baffle, the diameter of the baffle is smaller than the inner diameter of the air outlet cylinder, and larger than the inner diameter of the regulating cylinder; an annular buffer plate is provided inside the air outlet cylinder and on the right side of the baffle, a plurality of air vents are evenly distributed along the circumference of the buffer plate, and the inner diameter of the air vents gradually increases from one end close to the baffle to the other end; a plurality of arc-shaped grooves are provided on the inner walls of the air inlet cylinder and the air outlet cylinder.

[0006] Preferably, the connecting assembly includes a connecting flange provided at one end of the steam port close to the air inlet cylinder, and a connecting flange 2 corresponding to the connecting flange is provided at the end of the air inlet cylinder, and the connecting flange 2 is connected to the connecting flange by a plurality of bolts.

[0007] Preferably, a limiting ring is provided at the end of the air inlet cylinder and located on the inner side of the second connecting flange, and a limiting groove capable of accommodating the limiting ring is provided at the end of the steam port and located on the inner side of the connecting flange; the outer side of the limiting ring and the inner side of the limiting groove are both serrated.

[0008] Preferably, a plurality of reinforcing members are disposed on the outer side of the limiting ring, and a plurality of slots capable of accommodating the reinforcing members are disposed on the inner side of the limiting groove; the reinforcing members and the slots are both arc-shaped, and their shapes and positions correspond.

[0009] Preferably, the air inlet cylinder, the regulating cylinder and the air outlet cylinder are all composed of two layers of inner and outer steel structures, and the middle of the two layers of steel structures is filled with heat-resistant glass wool.

[0010] Preferably, the baffle is hollow inside.

[0011] Preferably, the distance between the opposing vent holes is greater than the diameter of the baffle.

[0012] The advantages of the utility model compared with the prior art are:

[0013] 1. The pressure of the steam entering the pipe is used to push the baffle to move through the pressure spring, so as to buffer and disperse the steam when the pressure is high, reducing the impact on the inner wall of the pipe; when the steam pressure is low, the channel is closed to reduce the condensation caused by waste heat;

[0014] 2. Simple structure, low cost, no need to plug in for electricity storage, and less restrictions on usage scenarios;

[0015] 3. Improve the connection between the steam port and the steam pipe to avoid instability or leakage at the interface due to instantaneous temperature and pressure increase, and avoid steam heat loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the internal structure of the utility model.

[0017] Figure 2 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 3 It is a partial structural schematic diagram of the utility model.

[0019] Figure 4 This utility model Figure 1 Enlarged view of point A in the middle.

[0020] As shown in the figure: 1. Steam port, 2. Adjusting device, 3. Air inlet tube, 4. Adjusting tube, 5. Air outlet tube, 6. Connecting flange, 7. Connecting flange 2, 8. Limiting ring, 9. Limiting groove, 10. Reinforcement, 11. Slot, 12. Pressure spring, 13. Baffle, 14. Buffer plate, 15. Vent, 16. Arc groove. DETAILED DESCRIPTION

[0021] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0022] Embodiment 1, in combination with the attached Figure 1-4 , an autonomously regulating steam injection device, comprising a steam port 1 and a regulating device 2; the regulating device 2 comprises an air inlet cylinder 3, a regulating cylinder 4, and an air outlet cylinder 5 from left to right, and the interiors are all connected to form a steam passage; the air inlet cylinder 3, the regulating cylinder 4, and the air outlet cylinder 5 are all composed of an inner and outer two-layer steel structure, and the middle of the two-layer steel structure is filled with heat-resistant glass wool, so that the pipeline as a whole is waterproof, leak-proof, impermeable, and pressure-resistant; the inner diameter of the regulating cylinder 4 is smaller than that of the air inlet cylinder 3 and the air outlet cylinder 5, thereby forming a limit for the baffle 13 mentioned below, so that it will not enter the regulating cylinder 4.

[0023] Combined with Figure 1 , a pressure spring 12 is provided inside the regulating cylinder 4, the left side of the pressure spring 12 is fixedly connected to the regulating cylinder 4, and the right side extends into and out of the air cylinder 5 and is connected with a baffle 13; the diameter of the baffle 13 is smaller than the inner diameter of the air cylinder 5, and larger than the inner diameter of the regulating cylinder 4, so that the range of movement of the baffle 13 is only between the left end of the air cylinder 5 and the buffer plate 14; when the pressure spring 12 is in a natural state, the baffle 13 is close to the left side of the air cylinder 5 to form a blockage, and the steam pressure cannot be moved unless it reaches a certain amount, so that when the pressure decreases in the later stage of steam transportation, it cannot enter the air cylinder 5, which can better reduce the generation of condensation; the baffle 13 is hollow inside, which can reduce the dead weight of the baffle 13, and the baffle 13 does not contact the air cylinder 5, thereby reducing the resistance during movement, making it easier for the pressure spring 12 and the steam pressure to push it;

[0024] Combined with Figure 1 , 4 A ring-shaped buffer plate 14 is provided inside the air outlet 5 and on the right side of the baffle 13. A plurality of vents 15 are evenly distributed along the circumference of the buffer plate 14. The inner diameter of the vents 15 gradually increases from one end close to the baffle 13 to the other end, and the buffer diffusion is more uniform. The distance between the relative vents 15 is greater than the diameter of the baffle 13 to prevent the baffle 13 from blocking the vents 15. When the steam is just started to be introduced, the instantaneous pressure increases, and the baffle 13 is pushed to the buffer plate 14. At this time, only the vents 15 can allow the steam to pass through, disperse and guide the steam, reduce the steam pressure entering the air outlet 5, and protect the subsequent connecting pipelines; a plurality of arc-shaped grooves 16 are provided on the inner walls of the air inlet 3 and the air outlet 5. The arc-shaped grooves 16 can be filled or coated with waterproof materials or water-absorbing materials to collect condensed water.

[0025] Embodiment 2, combined with the attached Figure 2 , 3A connecting assembly is provided between the regulating device 2 and the steam port 1; the connecting assembly includes a connecting flange 6 provided at one end of the steam port 1 close to the air inlet cylinder 3, and a connecting flange 2 7 corresponding to the connecting flange 6 is provided at the end of the air inlet cylinder 3, and the connecting flange 2 7 is connected to the connecting flange 6 by a plurality of bolts.

[0026] Combined with Figure 2 , 3 A limiting ring 8 is provided at the end of the air inlet cylinder 3 and located on the inner side of the connecting flange 2 7, and a limiting groove 9 capable of accommodating the limiting ring 8 is provided at the end of the steam port 1 and located on the inner side of the connecting flange 6; the outer side of the limiting ring 8 and the inner side of the limiting groove 9 are both serrated, and the serrated limiting ring 8 and the limiting groove 9 can prevent the air inlet cylinder 4 from being disengaged, displaced or twisted under the steam pressure for a long time, thereby improving the stability of the connection.

[0027] Combined with Figure 2 , 3 A plurality of reinforcing members 10 are provided on the outer side of the limiting ring 8, and a plurality of slots 11 capable of accommodating the reinforcing members 10 are provided on the inner side of the limiting groove 9; the reinforcing members 10 and the slots 11 are both arc-shaped, and their shapes and positions correspond; the reinforcing members 10 and the slots 11 further improve the stability of the connection.

[0028] The working principle of the utility model is as follows: when the steam is just being introduced, the instantaneous pressure increases, and the baffle 13 is pushed to the buffer plate 14. At this time, only the vent hole 15 can allow the steam to pass through, thereby dispersing and guiding the steam, reducing the pressure of the steam entering the outlet pipe 5, and protecting the subsequent connecting pipeline; when the pressure decreases in the later stage of steam transportation, the baffle 13 is located at the left end of the outlet pipe 5, and a small amount of steam cannot enter the outlet pipe 5, which can effectively reduce the generation of condensation, protect the pipeline, and increase the service life of the pipeline.

[0029] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. An autonomously regulated steam injection device, comprising a steam port (1) and a regulating device (2); characterized in that: A connecting assembly is provided between the regulating device (2) and the steam port (1); the regulating device (2) comprises, from left to right, an air inlet cylinder (3), a regulating cylinder (4), and an air outlet cylinder (5), and the insides of the regulating cylinder (4) are all connected; the inner diameter of the regulating cylinder (4) is smaller than that of the air inlet cylinder (3) and the air outlet cylinder (5); a pressure spring (12) is provided inside the regulating cylinder (4), the left side of the pressure spring (12) is fixedly connected to the regulating cylinder (4), and the right side of the pressure spring (12) is extended to the air inlet cylinder (5) and connected to the air outlet cylinder (5) and provided with a baffle (13) ), the diameter of the baffle (13) is smaller than the inner diameter of the air outlet tube (5) and larger than the inner diameter of the regulating tube (4); an annular buffer plate (14) is provided inside the air outlet tube (5) and on the right side of the baffle (13); a plurality of vent holes (15) are evenly distributed along the circumference of the buffer plate (14); the inner diameter of the vent holes (15) gradually increases from one end close to the baffle (13) to the other end; a plurality of arc-shaped grooves (16) are provided on the inner walls of the air inlet tube (3) and the air outlet tube (5).

2. The self-regulating steam injection device according to claim 1, characterized in that: The connection assembly comprises a connection flange (6) provided at one end of the steam port (1) close to the air inlet cylinder (3), a second connection flange (7) corresponding to the connection flange (6) is provided at the end of the air inlet cylinder (3), and the second connection flange (7) is connected to the connection flange (6) by a plurality of bolts.

3. The self-regulating steam injection device according to claim 2, characterized in that: A limiting ring (8) is provided at the end of the air inlet cylinder (3) and located on the inner side of the second connecting flange (7); a limiting groove (9) capable of accommodating the limiting ring (8) is provided at the end of the steam port (1) and located on the inner side of the connecting flange (6); the outer side of the limiting ring (8) and the inner side of the limiting groove (9) are both serrated.

4. The self-regulating steam injection device according to claim 3, characterized in that: A plurality of reinforcing members (10) are arranged on the outside of the limiting ring (8), and a plurality of slots (11) capable of accommodating the reinforcing members (10) are arranged on the inside of the limiting groove (9); the reinforcing members (10) and the slots (11) are both arc-shaped, and their shapes and positions correspond.

5. The self-regulating steam injection device according to claim 1, characterized in that: The air inlet cylinder (3), the regulating cylinder (4) and the air outlet cylinder (5) are all composed of two layers of steel structures, inner and outer, and the space between the two layers of steel structures is filled with heat-resistant glass wool.

6. The self-regulating steam injection device according to claim 1, characterized in that: The baffle (13) is hollow inside.

7. The self-regulating steam injection device according to claim 1, characterized in that: The distance between the opposite vent holes (15) is greater than the diameter of the baffle (13).

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