Large-drift-diameter small-flow temperature and pressure reducing device

Abstract

The utility model discloses a large-drift-diameter small-flow temperature and pressure reducing device which comprises a conveying pipeline, an adjusting valve installed on the conveying pipeline, a nozzle installed on the top of a cooling box body, a liquid discharging assembly installed in the cooling box body, a flow gathering cover installed at the bottom of an inner cavity of the cooling box body, and a liquid discharging pipe installed in the cooling box body. The sealing plug is sleeved with the flow gathering cover, the floating block is installed on the top of the sealing plug, a fixing plate is fixedly connected into the cooling box body, an installation plate is arranged on the top of the fixing plate, and the floating block is installed at the bottom of the installation plate. The conveying pipeline, the cooling box body, the nozzle and the liquid discharging assembly are used in a matched mode, the nozzle sprays cooling water into the cooling box body, steam conveyed in the conveying pipeline can be cooled, and when water flow in the cooling box body is accumulated by a certain depth, the floating block can drive the sealing plug to ascend, so that the cooling effect is improved. And therefore, water flow in the cooling box body is discharged through the liquid discharge pipe.

Description

Technical Field

[0001] This utility model relates to the field of de-cooling and pressure reducing devices, and in particular to a de-cooling and pressure reducing device with a large diameter and small flow rate. Background Technology

[0002] A large-diameter, small-flow desuperheating and pressure-reducing device is a device used to control and regulate the temperature and pressure of steam or other gases. It is mainly used in power, chemical, and petroleum industries to desuperheat and reduce the pressure of fluids in pipeline systems, ensuring the safe and stable operation of the system.

[0003] When reducing the temperature and pressure of steam or other gases flowing in a pipeline, nozzles and pressure regulating valves are usually installed directly on the pipeline. The pressure regulating valve can directly regulate the pressure inside the pipeline, that is, reduce the pressure of the fluid by adjusting the opening of the valve.

[0004] When cooling the temperature inside a pipeline, cooling water or other cooling media is sprayed into the pipeline through nozzles to reduce the temperature of steam or gas to the required level. However, if cooling water is sprayed directly into the pipeline through nozzles, the cooling water will be transported along with the pipeline and may even accumulate inside the pipeline, making it difficult to drain the cooling water sprayed into the pipeline. Utility Model Content

[0005] The purpose of this invention is to provide a large-diameter, low-flow-rate de-cooling and pressure-reducing device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a large-diameter, small-flow-rate de-cooling and pressure-reducing device, comprising a conveying pipeline, on which a regulating valve is installed;

[0007] A cooling box is installed on the conveying pipeline, a nozzle is installed on the top of the cooling box, and a drainage assembly is installed inside the cooling box. The drainage assembly includes:

[0008] A flow-concentrating shroud and a drain pipe, wherein the flow-concentrating shroud is installed at the bottom of the inner cavity of the cooling box, and the drain pipe is installed inside the cooling box;

[0009] A sealing plug and a float, wherein the sealing plug is fitted inside the flow-concentrating shroud and the float is mounted on top of the sealing plug.

[0010] Preferably, a fixing plate is fixedly connected inside the cooling box, and an mounting plate is provided on the top of the fixing plate, with the float installed at the bottom of the mounting plate.

[0011] Preferably, a fixing rod is fixedly connected to the bottom of the mounting plate, the outer wall of the fixing rod is slidably inserted into the fixing plate, and the bottom of the fixing rod is fixedly connected to the sealing plug.

[0012] Preferably, a connecting rod is fixedly connected to the top of the fixing plate, a through hole is opened on the top of the mounting plate, and a limiting spring acting on the mounting plate is slidably sleeved on the outer wall of the connecting rod.

[0013] Preferably, a fixing collar is fixedly sleeved in the inner cavity of the through hole, the outer wall of the connecting rod is slidably sleeved with the fixing collar, and a limit collar is fixedly sleeved on the top of the outer wall of the connecting rod.

[0014] Preferably, the limiting spring is located between the limiting collar and the fixing collar, and a protective sleeve is fixedly connected to the top of the mounting plate, with the limiting spring and the limiting collar sleeved inside the protective sleeve.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] This invention utilizes the combined use of a conveying pipe, a cooling box, a nozzle, and a drain assembly. The drain assembly includes a flow-concentrating hood, a drain pipe, a sealing plug, and a float. The nozzle sprays cooling water into the cooling box, which can cool the steam conveyed in the conveying pipe. When the water inside the cooling box accumulates to a certain depth, the float can drive the sealing plug to rise, thereby allowing the water inside the cooling box to be discharged through the drain pipe. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the internal structure of the cooling box of this utility model from the front.

[0019] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0020] In the diagram: 1. Delivery pipe; 2. Regulating valve; 3. Cooling box; 4. Nozzle; 5. Drainage assembly; 51. Concentrator; 52. Drain pipe; 53. Sealing plug; 54. Float; 55. Fixing plate; 56. Mounting plate; 57. Fixing rod; 58. Connecting rod; 59. Limiting spring; 510. Through hole; 511. Fixing collar; 512. Limiting collar; 513. Protective sleeve. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] This utility model provides, for example Figure 1-3 The device, a large-diameter, low-flow-rate de-cooling and pressure-reducing device, includes a delivery pipe 1. A regulating valve 2 is installed on the delivery pipe 1, and the regulating valve 2 employs a multi-stage throttling method to regulate the pressure reduction of the fluid inside the delivery pipe 1, avoiding the noise and vibration problems caused by single-stage throttling while ensuring fluid stability. A cooling box 3 is installed on the delivery pipe 1, and a nozzle 4 is installed on the top of the cooling box 3. The nozzle 4 is connected to an external cooling water delivery pump via a pipe, allowing the delivery pump to spray cooling water through the pipe and nozzle 4 into the interior of the cooling box 3, thereby allowing the fluid inside the delivery pipe 1 to enter... When cooling the interior of the cooling chamber 3, cooling water sprayed from multiple nozzles 4 can cool the fluid inside the cooling chamber 3. The delivery pipe 1 is installed on the top of the side of the cooling chamber 3, so that the gas flowing inside the delivery pipe 1, after contacting and cooling the cooling water inside the cooling chamber 3, sinks to the bottom of the inner cavity of the cooling chamber 3 under gravity. The steam inside the cooling chamber 3 is discharged from the delivery pipe 1 on the other side. A drainage assembly 5 is installed inside the cooling chamber 3, which includes a flow-concentrating hood 51, a drainage pipe 52, a sealing plug 53, and a float 54. The flow-concentrating hood 51 is installed... At the bottom of the inner cavity of the cooling box 3, the drain pipe 52 is installed inside the cooling box 3. Under the action of the flow-concentrating shroud 51, the water inside the cooling box 3 can be discharged from the drain pipe 52, allowing the cooling water that has absorbed heat to be recycled and reused. The sealing plug 53 is fitted inside the flow-concentrating shroud 51, and when the bottom of the outer wall of the sealing plug 53 is in contact with the inner wall of the flow-concentrating shroud 51, the drain pipe 52 can be sealed. The float 54 is installed on the top of the sealing plug 53. A fixing plate 55 is fixedly connected inside the cooling box 3, and an mounting plate 56 is provided on the top of the fixing plate 55. The float 54 is installed on the top of the mounting plate 56. Installed at the bottom of mounting plate 56, when the water flow inside the cooling box 3 gradually rises, the float 54 rises under the buoyancy of the water flow. The float 54 can then drive the sealing plug 53 to rise, thereby separating the outer wall of the float 54 from the inner wall of the flow-concentrating cover 51, so that the water inside the cooling box 3 can be discharged. When the water flow inside the cooling box 3 drops to a certain extent, that is, when the buoyancy of the float 54 can no longer drive the sealing plug 53 to rise, the sealing plug 53 will stick to the inner wall of the flow-concentrating cover 51, preventing the gas transported in the delivery pipe 1 from being discharged through the drain pipe 52 after the water inside the cooling box 3 has been discharged.

[0023] Furthermore, a fixing rod 57 is fixedly connected to the bottom of the mounting plate 56. The outer wall of the fixing rod 57 is slidably inserted into the fixing plate 55. The bottom of the fixing rod 57 is fixedly connected to the sealing plug 53. Under the action of the fixing rod 57, the sealing plug 53 and the mounting plate 56 move up and down synchronously, thereby making the sealing plug 53 and the float 54 move up and down synchronously. The sealing plug 53 is composed of a cone and a sealing sleeve. The sealing sleeve is fitted onto the outside of the cone, and the density of the cone is greater than the density of water, thereby preventing the sealing plug 53 from not fitting against the inner wall of the flow-gathering hood 51 under the buoyancy of water. A connecting rod 58 is fixedly connected to the top of the fixing plate 55. A through hole 510 is opened on the top of the mounting plate 56. A limiting spring 59 acting on the mounting plate 56 is slidably sleeved on the outer wall of the connecting rod 58.

[0024] Furthermore, a fixing collar 511 is fixedly sleeved within the inner cavity of the through hole 510. The outer wall of the connecting rod 58 is slidably sleeved with the fixing collar 511. A limiting collar 512 is fixedly sleeved at the top of the outer wall of the connecting rod 58. A limiting spring 59 is located between the limiting collar 512 and the fixing collar 511. The limiting spring 59 can exert a downward elastic force on the mounting plate 56 through the limiting collar 512 and the fixing collar 511. Thus, when the buoyancy of the float 54 cannot drive the sealing plug 53 to rise, the limiting spring 59 can exert a downward elastic force on the sealing plug 53 through the mounting plate 56 and the fixing rod 57, so that the sealing plug 53 can better fit against the inner wall of the flow-concentrating shroud 51. Moreover, the buoyancy of the float 54 under the water flow is sufficient. The buoyancy of the float 54 is greater than the sum of the elastic force of the limit spring 59, the weight of the mounting plate 56, and the weight of the sealing plug 53. A protective sleeve 513 is fixedly connected to the top of the mounting plate 56. The limit spring 59 and the limit collar 512 are fitted inside the protective sleeve 513. The diameter of the inner cavity of the protective sleeve 513 is the same as the diameter of the inner cavity of the through hole 510. The top of the inner cavity of the protective sleeve 513 is sealed. The height of the fixed collar 511 is higher than that of the float 54. Under the action of air pressure, water will not enter the interior of the protective sleeve 513, thereby preventing the limit spring 59 from being immersed in water and reducing the possibility of the limit spring 59 rusting in contact with water.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A large-diameter, small-flow-rate de-temperature and pressure-reducing device, comprising a conveying pipe (1), wherein a regulating valve (2) is installed on the conveying pipe (1); Its features are, A cooling box (3) is installed on the conveying pipe (1), a nozzle (4) is installed on the top of the cooling box (3), and a drain assembly (5) is installed inside the cooling box (3). The drain assembly (5) includes: A flow-concentrating shroud (51) and a drain pipe (52), wherein the flow-concentrating shroud (51) is installed at the bottom of the inner cavity of the cooling box (3) and the drain pipe (52) is installed inside the cooling box (3); A sealing plug (53) and a float (54) are provided, wherein the sealing plug (53) is fitted inside the flow-concentrating shroud (51) and the float (54) is mounted on top of the sealing plug (53).

2. The de-icing and pressure-reducing device with a large diameter and small flow rate according to claim 1, characterized in that, The cooling box (3) is fixedly connected to a fixing plate (55), and a mounting plate (56) is provided on the top of the fixing plate (55). The float (54) is installed on the bottom of the mounting plate (56).

3. The de-icing and pressure-reducing device with a large diameter and small flow rate according to claim 2, characterized in that, The bottom of the mounting plate (56) is fixedly connected to a fixing rod (57), the outer wall of the fixing rod (57) is slidably inserted into the fixing plate (55), and the bottom of the fixing rod (57) is fixedly connected to a sealing plug (53).

4. The desuperheating and pressure reducing device with a large diameter and small flow rate according to claim 3, characterized in that, A connecting rod (58) is fixedly connected to the top of the fixing plate (55), and a through hole (510) is opened on the top of the mounting plate (56). A limiting spring (59) acting on the mounting plate (56) is slidably sleeved on the outer wall of the connecting rod (58).

5. The desuperheating and pressure reducing device with a large diameter and small flow rate according to claim 4, characterized in that, A fixing collar (511) is fixedly sleeved in the inner cavity of the through hole (510), the outer wall of the connecting rod (58) is slidably sleeved with the fixing collar (511), and a limiting collar (512) is fixedly sleeved on the top of the outer wall of the connecting rod (58).

6. The desuperheating and pressure reducing device with a large diameter and small flow rate according to claim 5, characterized in that, The limiting spring (59) is located between the limiting collar (512) and the fixing collar (511). The top of the mounting plate (56) is fixedly connected to the protective sleeve (513). The limiting spring (59) and the limiting collar (512) are sleeved inside the protective sleeve (513).

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