Steam temperature and pressure reducing pore plate

Abstract

The utility model relates to a temperature and pressure reducing device, and aims to provide a steam temperature and pressure reducing pore plate which has the characteristics of good temperature and pressure reducing effect, simple structure and low cost. According to the technical scheme, the steam temperature and pressure reducing pore plate comprises a temperature reducing water input pipe; the desuperheater is characterized in that the desuperheating water input pipe is radially communicated with a cylindrical pore plate shell; the two end faces of the pore plate shell are each fixedly provided with a side plate in a sealed mode, the two side plates are parallel to each other and arranged at an interval, and the attemperation water input pipe communicates with a cavity between the two side plates so that attemperation water can be input; a plurality of cylindrical nozzle inner sleeves are sealed and fixed on the two side plates in parallel, and the two ends of the nozzle inner sleeves penetrate through the two side plates respectively to serve as steam circulation channels; and a plurality of spray holes penetrating through the inner wall and the outer wall of each nozzle inner sleeve are formed in the wall part of each nozzle inner sleeve, so that the desuperheating water can be sprayed into the steam circulating channel.

Description

Technical Field

[0001] The utility model relates to a temperature reduction and pressure reduction device, in particular to a steam temperature reduction and pressure reduction orifice plate. Background Art

[0002] CN112503395A discloses a steam cooling and pressure reduction device, comprising a first steam pipe and a second steam pipe, wherein a pressure reducing and temperature reducing valve is arranged at one end of the first steam pipe, a throttling orifice is arranged between the second steam pipe and the pressure reducing and temperature reducing valve, the second steam pipe is connected with a safety valve, one end of the safety valve is connected with a third steam pipe, and one end of the third steam pipe is provided with a residual steam treatment system, the device can collect the exhausted steam and then cool it, thereby reducing the steam diffused in the air to a certain extent, reducing the humidity of the working environment, slowing down the corrosion of the equipment, relatively increasing the service life of the equipment, improving the mixing effect of the primary steam and the atomized cooling water, increasing the cooling speed, and improving the working efficiency to a certain extent, thereby shortening the length of the second steam pipe and saving the equipment cost.

[0003] The disadvantages of this steam temperature reduction and pressure reduction device are that the structure is relatively complex, the manufacturing is difficult, and the cost is also high. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the shortcomings of the above-mentioned background technology and provide a steam cooling and pressure reducing orifice plate, which has the characteristics of good cooling and pressure reducing effect, simple structure and low cost.

[0005] The technical solution provided by the utility model is:

[0006] A steam cooling and pressure reducing orifice plate, comprising a cooling water inlet pipe; characterized in that: the cooling water inlet pipe is radially connected to a cylindrical orifice plate shell; the two end faces of the orifice plate shell are respectively sealed and fixed with a side plate, the two side plates are parallel to each other and arranged at a distance, and the cooling water inlet pipe is connected to the cavity between the two side plates so that cooling water can be input; a plurality of cylindrical nozzle inner sleeves are sealed and fixed to the two side plates in parallel with each other and the two ends respectively penetrate the two side plates to serve as steam circulation channels; the wall portion of each nozzle inner sleeve is provided with a plurality of spray holes penetrating the inner and outer walls of the nozzle inner sleeve, so that cooling water can be sprayed into the steam circulation channel.

[0007] The axis of the nozzle inner sleeve and the axis of the orifice plate outer shell are arranged parallel to each other.

[0008] The axis of the cooling water inlet pipe coincides with the symmetric base plane of the orifice plate shell, and the symmetric base plane is parallel to the side plates and is located at a central position between the two side plates.

[0009] The plurality of spray holes are evenly distributed on the circumferential surface of the cylindrical wall portion.

[0010] The beneficial effects of the utility model are as follows: the steam temperature-reducing and pressure-reducing orifice plate provided by the utility model can not only effectively reduce the temperature and pressure of the steam, but also has a simple structure, is easy to manufacture, has a low cost, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the main structure of an embodiment of the utility model.

[0012] Figure 2 It is a schematic diagram of the main structure of an embodiment of the utility model (the cooling water input pipe is omitted).

[0013] Figure 3 It is a schematic diagram of the working state of an embodiment of the utility model.

[0014] Reference numerals in the figure: steam pipe 1, nozzle inner sleeve 2, orifice plate outer shell 3, cooling water inlet pipe 4, side plate 5, spray hole 6, cooling water mist 7. DETAILED DESCRIPTION

[0015] The following is a further description with reference to the embodiments shown in the accompanying drawings.

[0016] The steam desuperheating and pressure reducing orifice plate shown in the attached drawings comprises a desuperheating water inlet pipe 4; this structure is similar to the existing desuperheating device.

[0017] The improvement of the utility model is as follows: the cooling water inlet pipe is connected to a cylindrical orifice plate shell 3 (as can be seen from the figure, it is connected to the outer circumferential surface of the orifice plate shell in the diameter direction of the orifice plate shell); the two end faces of the orifice plate shell respectively cover and seal and fix a side plate 5, so that the two side plates are parallel to each other and arranged at a distance, thereby forming a cavity between the two side plates; the cooling water inlet pipe passes through the wall of the orifice plate shell and is connected to the cavity between the two side plates so that cooling water can be input; a plurality of cylindrical nozzle inner sleeves 2 are arranged in parallel with each other and are respectively sealed and fixed to the two side plates, and the two ends of each nozzle inner sleeve respectively pass through the two side plates, so that the inner cavity of the nozzle inner sleeve becomes a steam flow channel; the wall of each nozzle inner sleeve is also provided with a plurality of spray holes 6, each spray hole passes through the inner and outer walls of the nozzle inner sleeve, so that cooling water can be sprayed into the steam flow channel to reduce the temperature and pressure of the steam.

[0018] Furthermore, the axis of the nozzle inner sleeve and the axis of the orifice plate outer shell are arranged parallel to each other.

[0019] Furthermore, the axis of the cooling water inlet pipe coincides with the symmetric base plane of the orifice plate shell, and the symmetric base plane is parallel to the side plates and is located at a central position between the two side plates.

[0020] Furthermore, the plurality of spray holes are evenly distributed on the circumferential surface of the cylindrical wall portion.

[0021] The working principle of the utility model is (see Figure 3 ): The utility model needs to be coaxially inserted in the middle of the steam pipe 1 (the diameter of the side plate is consistent with the outer diameter of the steam pipe), and the connection between the side plate and the steam pipe is kept in a sealed state; when working, the steam is input from the inlet on one side of the steam pipe, and then output from the other side of the steam pipe through the nozzle inner sleeve; the cooling water is input into the cavity between the two side plates through the cooling water input pipe, and then enters the nozzle inner sleeve through the spray hole to cool the steam; since the steam flow area after passing through the nozzle inner sleeve is reduced, the steam pressure is also reduced, so the steam temperature and pressure degree are reduced after passing through the utility model.

Claims

1. A steam desuperheating and pressure reducing orifice plate, comprising a desuperheating water inlet pipe (4); characterized in that: The cooling water input pipe is radially connected to a cylindrical orifice plate shell (3); the two end surfaces of the orifice plate shell are respectively sealed and fixed with a side plate (5), the two side plates are parallel to each other and arranged at a distance, and the cooling water input pipe is connected to the cavity between the two side plates so that cooling water can be input; a plurality of cylindrical nozzle inner sleeves (2) are sealed and fixed to the two side plates in parallel with each other and the two ends respectively pass through the two side plates to serve as steam circulation channels; the wall of each nozzle inner sleeve is provided with a plurality of spray holes (6) that pass through the inner and outer walls of the nozzle inner sleeve, so that cooling water can be sprayed into the steam circulation channel.

2. The steam temperature and pressure reducing orifice plate according to claim 1, characterized in that: The axis of the nozzle inner sleeve and the axis of the orifice plate outer shell are arranged parallel to each other.

3. The steam temperature and pressure reducing orifice plate according to claim 2, characterized in that: The axis of the cooling water inlet pipe coincides with the symmetric base plane of the orifice plate shell, and the symmetric base plane is parallel to the side plates and is located at a central position between the two side plates.

4. The steam temperature and pressure reducing orifice plate according to claim 3, characterized in that: The plurality of spray holes are evenly distributed on the circumferential surface of the cylindrical wall portion.

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