A temperature and pressure reducing device

Abstract

The utility model discloses a temperature and pressure reducing device, including steam inlet pipe, steam inlet pipe has the temperature and pressure reducing pipe through pressure reducing valve intercommunication, be provided with temperature reducing water supply pipe on the temperature and pressure reducing pipe, be provided with steam flow -through pipe in the temperature and pressure reducing pipe, steam flow -through pipe outside is provided with heat exchange pipe, temperature reducing water supply pipe one end is provided with in temperature and pressure reducing pipe with heat exchange pipe intercommunication, heat exchange pipe side communication has water outlet shower head to steam flow -through pipe, the bottom end intercommunication of temperature and pressure reducing pipe has the water outlet pipe, and the temperature reducing water with thermal energy in tradition needs to flow out from the inner chamber, and in the flowing process, the thermal energy that it exists is easy to re -radiate to the inner chamber, influences the temperature -reducing effect to the steam in pipeline, and the utility model discloses can improve the overall temperature -reducing effect to the steam.

Description

Technical Field

[0001] This utility model relates to the technical field of de-cooling and de-pressure equipment, and in particular to a de-cooling and de-pressure device. Background Technology

[0002] The desuperheating and pressure reducing device is a steam heat energy parameter conversion device and waste heat energy utilization energy device widely used in modern industry, such as combined heat and power, centralized heating, and thermal energy engineering in light industry, power, chemical industry, textile and other enterprises. Through this device, the steam parameters provided by the user are reduced to the appropriate temperature and pressure required by the user to meet the user's requirements, and heat energy can be fully saved and used rationally.

[0003] Chinese utility model patent CN220135221U discloses a desuperheating and pressure reducing device, including a main body. The main body includes a steam inlet pipe, a pressure reducing valve, a desuperheating and pressure reducing pipe, a small desuperheating water control and regulation system, and a large desuperheating water control and regulation system. The top of the steam inlet pipe is provided with a first temperature and pressure measuring structure. One end of the steam inlet pipe is connected to a pressure reducing valve, and the other end of the pressure reducing valve is connected to the desuperheating and pressure reducing pipe. This application's technical solution creates an inner cavity on the inner wall of the desuperheating and pressure reducing pipe. The desuperheating water from the small or large desuperheating water control and regulation system directly enters the inner cavity and is then discharged from the discharge pipe. This allows the desuperheating water to cool the steam without contacting it, thus not affecting the steam discharge.

[0004] However, the steam in the desuperheating and pressure reducing pipe and the desuperheating water in the inner cavity are desuperheated through isolated heat exchange. Although the heat energy of the steam is absorbed by the desuperheating water, the desuperheating water with heat energy needs to flow out from the inner cavity. During the flow, the heat energy it contains is easily dissipated back into the inner cavity, affecting the cooling effect on the steam in the pipe. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a de-cooling and de-pressure device.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a de-heating and de-pressure device, comprising a steam inlet pipe, wherein the steam inlet pipe is connected to a de-heating and de-pressure pipe via a pressure reducing valve, a de-heating water supply pipe is provided on the de-heating and de-pressure pipe, a steam flow pipe is provided inside the de-heating and de-pressure pipe, a heat exchange pipe is provided outside the steam flow pipe, one end of the de-heating water supply pipe passes through the de-heating and de-pressure pipe and is connected to the heat exchange pipe, a water outlet nozzle is connected to the side of the heat exchange pipe facing the steam flow pipe, and a water outlet pipe is connected to the bottom end of the de-heating and de-pressure pipe.

[0007] Preferably, the steam flow pipe is provided in two sets, which are located opposite each other inside the desuperheating and pressure reducing pipe, and a flow divider is provided between the two sets of steam flow pipes inside the desuperheating and pressure reducing pipe.

[0008] Preferably, the heat exchange tube is sleeved on the steam flow pipe, and there are several groups of heat exchange tubes arranged sequentially along the length of the steam flow pipe. The groups of heat exchange tubes sleeved on the same steam flow pipe are connected through the main water pipe, and the desuperheating water supply pipe is located inside the steam flow pipe and is connected to the main water pipe at one end.

[0009] Preferably, a heat dissipation pipe is provided in the steam flow pipe facing the steam inlet pipe. One end of the heat dissipation pipe is connected to the main water pipe, and the other end passes through the steam flow pipe and is connected to the interior of the desuperheating and pressure reducing pipe.

[0010] Preferably, the heat dissipation pipes are provided in several groups and distributed along the length of the flow divider plate.

[0011] Preferably, the desuperheating water supply pipe is equipped with a pressure boosting valve.

[0012] The beneficial effects of this utility model are as follows: By setting a steam flow pipe inside the desuperheating and pressure reducing pipe and a heat exchange pipe outside the steam flow pipe, and indirectly connecting the desuperheating water supply pipe outside the desuperheating and pressure reducing pipe to the heat exchange pipe, and setting a water outlet nozzle on the heat exchange pipe, the surface of the steam flow pipe is cooled and heat absorbed by spraying. Compared with the prior art, this utility model can avoid the water that has absorbed heat flowing on the surface of the steam flow pipe for too long by spraying water, thus reducing the heat dissipation on the surface and reducing the impact on the cooling effect of the steam inside the steam flow pipe. At the same time, a heat dissipation pipe is set at the end of the steam flow pipe facing the steam inlet pipe, and the desuperheating water flow is indirectly circulated inside it through the desuperheating water supply pipe, so that the steam entering the steam flow pipe can be further diverted, and the desuperheating water in the heat dissipation pipe can absorb some heat energy. Compared with the existing steam flow pipe, which has insufficient cooling in the middle, this utility model further improves the overall cooling effect of the steam. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of the upper part of the steam inlet pipe and the desuperheating and pressure reducing pipe in one embodiment of the present invention;

[0014] Figure 2 This is an exploded view of a portion of the internal mechanism of the de-icing and pressure-reducing tube in one embodiment of the present invention.

[0015] Figure 3 This is an exploded view of one embodiment of the present invention, used to separately show the internal and external parts of the de-icing and pressure-reducing tube.

[0016] Figure 4This is a structural schematic diagram illustrating a portion of the mechanism on the steam flow pipe in one embodiment of the present invention;

[0017] Figure 5 for Figure 4 Enlarged view of section A.

[0018] Attached reference numerals: 1. Steam inlet pipe; 2. Pressure reducing valve; 3. Desuperheating and pressure reducing pipe; 4. Steam flow pipe; 5. Heat exchange pipe; 6. Water outlet nozzle; 7. Water outlet pipe; 8. Diverter plate; 9. Main water pipe; 10. Heat dissipation pipe; 11. Pressure booster valve; 12. Desuperheating water supply pipe. Detailed Implementation

[0019] The following description is only a preferred embodiment of the present utility model. The scope of protection is not limited to this embodiment. All technical solutions that fall within the scope of the present utility model should be protected by the present utility model. It should also be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present utility model should also be considered within the scope of protection of the present utility model.

[0020] It should be noted that in this document, relational terms such as first and second, or "connecting plate one, connecting plate two," are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0021] The directional terms mentioned in this embodiment, such as "up," "down," "left," and "right," are merely used to help those skilled in the art understand the relationships between various features or parts in conjunction with the accompanying drawings.

[0022] In this embodiment, unless otherwise explicitly specified and limited, the terms "connection" and "fixed" should be interpreted broadly. For example, "fixed" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] like Figures 1 to 5As shown, a desuperheating and pressure reducing device includes a steam inlet pipe 1. The outlet of the steam inlet pipe 1 is connected to a desuperheating and pressure reducing pipe 3 via a pressure reducing valve 2. In this embodiment, the desuperheating and pressure reducing pipe 3 consists of a front pipe, a transfer pipe, and a rear pipe. Temperature and pressure measuring structures are installed on both the front and rear pipes. These structures utilize conventional equipment used by those skilled in the art to test the temperature and pressure of the passing steam. The front and rear ends of the transfer pipe are bolted to the front and rear pipes, respectively. A desuperheating water supply pipe 12 is installed on the transfer pipe to supply desuperheating water at a suitable temperature. A steam flow pipe 4 is installed inside the desuperheating and pressure reducing pipe 3. The steam flow pipe 4 is semi-circular and there are two sets of them, located opposite each other inside the desuperheating and pressure reducing pipe 3. The front end of the steam flow pipe 4 is connected to the connection point between the desuperheating and pressure reducing pipe 3 and the front section pipe. It should be noted that the desuperheating and pressure reducing pipe 3 is generally cylindrical. The semi-circular design of the steam flow pipe 4 is to maximize the use of the internal space of the desuperheating and pressure reducing pipe 3. Several sets of heat exchange pipes 5 are sleeved on the outside of the steam flow pipe 4 along its length. A water outlet nozzle 6 is installed on the side of the heat exchange pipe 5 facing the steam flow pipe 4. The water outlet nozzle 6 is connected to the inside of the heat exchange pipe 5 and is sleeved on the same set of steam flow pipes. Each set of heat exchange tubes 5 on the connecting pipe 4 is connected to the main water pipe 9. The output end of the desuperheating water supply pipe 12 passes through the desuperheating and pressure reducing pipe 3 and connects to the main water pipe 9. A diversion plate 8 is installed between the two sets of steam flow pipes 4 at the connection between the intermediate pipe and the front section pipe. Its purpose is to divert the steam flowing from the front section pipe into the two sets of steam flow pipes 4, thus interrupting the overall flow direction of the steam. A heat dissipation pipe 10 is installed on the steam flow pipe 4 facing the steam inlet pipe 1. Several sets of heat dissipation pipes 10 are arranged along the length of the diversion plate 8. One end of the heat dissipation pipe 10 passes through the steam flow pipe 4 and connects to the main water pipe 9. The other end is connected to the internal part of the transfer pipe through the steam flow pipe 4. The purpose is to further disperse the flowing steam and prevent only part of the steam from directly contacting the inner wall of the steam flow pipe 4 during the steam flow process. At the same time, the cooling water flows in the heat dissipation pipe 10 to cool the steam in an insulating manner, thereby improving the overall cooling effect of the steam. A pressure boosting valve 11 is installed on the cooling water supply pipe 12 to increase the water pressure of the cooling water and ensure that it has a certain pressure when output. The bottom end of the cooling and pressure reducing pipe 3 is connected to the outlet pipe 7, which is used to discharge the cooling water that has absorbed heat after being sprayed out by the heat dissipation pipe 10 and the water outlet nozzle 6.

[0024] When in operation, the desuperheating water supply pipe 12 continuously delivers desuperheating water at a suitable temperature. The desuperheating water flows into the heat exchange pipe 5 and the heat dissipation pipe 10 through the main water pipe 9. The desuperheating water in the heat exchange pipe 5 is sprayed onto the surface of the steam flow pipe 4 through the water outlet nozzle 6. New steam enters from the steam inlet pipe 1, is depressurized by the pressure reducing valve 2, and then enters from the front pipe. When entering the steam flow pipe 4, it undergoes isolated heat exchange with the desuperheating water in the heat dissipation pipe 10 at the front end of the steam flow pipe 4, allowing the steam to undergo its first cooling. At the same time, the flow direction of the steam is diverted. Then, it enters the steam flow pipe 4. At this time, the water outlet nozzle 6 sprays water onto the surface of the steam flow pipe 4, allowing the steam to further exchange heat with the sprayed desuperheating water through the steam flow pipe 4. The desuperheating water after heat exchange is flushed down by the subsequently sprayed desuperheating water, reducing the problem of the desuperheating water with temperature dissipating heat energy on the surface of the steam flow pipe 4. The desuperheating water after heat exchange flows out through the water outlet pipe 7.

[0025] It should be noted that the number and position of the heat dissipation pipes 10 can be adjusted by personnel according to the actual situation. Multiple sets can be set sequentially along the length of the steam flow pipe 4, so that the flow direction of the steam after entering the steam flow pipe 4 can be adjusted and changed, which can further improve the overall cooling effect of the steam.

[0026] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A desuperheating and pressure reducing device, comprising a steam inlet pipe (1), wherein the steam inlet pipe (1) is connected to a desuperheating and pressure reducing pipe (3) via a pressure reducing valve (2), and a desuperheating water supply pipe (12) is provided on the desuperheating and pressure reducing pipe (3). Its features are, A steam flow pipe (4) is provided inside the de-heating and pressure reducing pipe (3), and a heat exchange pipe (5) is provided outside the steam flow pipe (4); One end of the desuperheating water supply pipe (12) is inserted into the desuperheating and pressure reducing pipe (3) and connected to the heat exchange pipe (5); The heat exchange tube (5) is connected to a water outlet nozzle (6) on the side facing the steam flow tube (4), and the bottom end of the de-heating and pressure reducing tube (3) is connected to a water outlet pipe (7).

2. The pressure and temperature reducing device according to claim 1, wherein Two sets of steam flow pipes (4) are provided, which are located opposite each other inside the desuperheating and pressure reducing pipe (3). A flow divider (8) is provided between the two sets of steam flow pipes (4) inside the desuperheating and pressure reducing pipe (3).

3. A pressure and temperature reducing device according to claim 2, wherein The heat exchange tube (5) is sleeved on the steam flow pipe (4). Several groups of heat exchange tubes (5) are arranged sequentially along the length of the steam flow pipe (4). The heat exchange tubes (5) sleeved on the same steam flow pipe (4) are connected through the main water pipe (9). The desuperheating water supply pipe (12) is located inside the steam flow pipe (4) and one end is connected to the main water pipe (9).

4. The pressure and temperature reducing device according to claim 3, wherein The steam flow pipe (4) is provided with a heat dissipation pipe (10) facing the steam inlet pipe (1). One end of the heat dissipation pipe (10) is connected to the main water pipe (9), and the other end passes through the steam flow pipe (4) and is connected to the inside of the de-heating and pressure reducing pipe (3).

5. A pressure and temperature reducing device according to claim 4, wherein The heat dissipation pipes (10) are arranged in several groups and distributed along the length of the diverter plate (8).

6. The pressure and temperature reducing device according to claim 1, wherein A pressure boosting valve (11) is installed on the desuperheating water supply pipe (12).

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