Opposite spraying type double-nozzle steam desuperheater

Abstract

The utility model relates to a desuperheater, and aims to provide an opposite spraying type double-nozzle steam desuperheater which has the characteristics of good steam desuperheating performance and simple structure. According to the technical scheme, the opposite spraying type double-nozzle steam desuperheater comprises a horizontally-arranged steam pipeline and nozzles which are installed on the wall of the steam pipeline and extend into the steam pipeline in the radial direction to spray desuperheating water. The device is characterized in that the number of the nozzles is at least two; the two nozzles are arranged at a certain interval and are opposite to each other; the spraying centers of the two nozzles coincide with the axis of an inner cavity of the steam pipeline.

Description

Technical Field

[0001] The utility model relates to a desuperheater, in particular to a double-nozzle steam desuperheater with opposite spraying nozzles. Background Art

[0002] CN205208546 discloses a steam desuperheater, comprising an outer cylinder, one end of which is a steam inlet and the other end is a steam outlet; a water spray device is arranged at one end of the outer cylinder near the steam inlet, and a steam spray device is also arranged at an adjacent position of the water spray device along the steam flow direction; an inner cylinder is arranged inside the outer cylinder, the inner cylinder and the outer cylinder are arranged on the same center line, and the nozzles of the water spray device and the steam spray device are arranged on the same center line. This solves the problem that the steam temperature adjustment range is difficult to control.

[0003] The disadvantage of the above steam desuperheater is that conventional nozzles cannot ensure complete atomization of the desuperheating water (part of the desuperheating water is still in the form of water droplets); and the most important factor determining the desuperheating performance of the steam desuperheater is the atomization effect of the desuperheating water. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the above-mentioned background technology and provide a double-nozzle steam desuperheater with opposite spraying nozzles, which should have the characteristics of good steam desuperheating performance and simple structure.

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

[0006] A double-nozzle steam desuperheater with opposite spraying type comprises a horizontally arranged steam pipe and a nozzle installed on the wall of the steam pipe and radially extending into the steam pipe to spray desuperheating water;

[0007] The invention is characterized in that: the nozzle comprises at least two nozzles; the two nozzles are arranged at a certain distance and face each other; and the injection centers of the two nozzles coincide with the inner cavity axis of the steam pipe.

[0008] The certain distance is 100-500 mm.

[0009] The nozzle is installed on the nozzle seat; the nozzle seat is a hollow rod with one end closed and radially extending into the inner cavity of the steam pipe, and the other end is provided with a cooling water inlet and the end penetrates the steam pipe wall and is fixed to the steam pipe wall through a threaded component.

[0010] The cooling water inlets of the two nozzles are located outside the steam pipe; the cooling water inlets are connected to a water pipe for providing cooling water.

[0011] The beneficial effects of the utility model are: due to the design of the double-nozzle spray structure, the atomization degree of the cooling water is significantly improved, thereby improving the cooling performance of the steam desuperheater; and the structure of the utility model is simple, and there is no technical difficulty in manufacturing and installing, and it is welcomed by customers. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a main structural schematic diagram of an embodiment of the utility model.

[0013] Reference numerals in the figure: steam pipe 1, first nozzle seat 2, first nozzle cooling water inlet 3, second nozzle cooling water inlet 4, second nozzle seat 5, first nozzle 6, second nozzle 7. DETAILED DESCRIPTION

[0014] The following is a further description with reference to the embodiments shown in the accompanying drawings.

[0015] The double-nozzle steam desuperheater shown in the attached drawings comprises a horizontally arranged steam pipe 1 and a nozzle installed on the wall of the steam pipe and radially extending into the steam pipe to spray desuperheating water; the above structure is similar to that of the existing desuperheater.

[0016] The improvements of the utility model are:

[0017] There are two nozzles; the two nozzles are arranged at a certain distance and face each other; the injection centers of the two nozzles coincide with the inner cavity axis of the steam pipe.

[0018] The certain distance is 100-500 mm (preferably 300 mm).

[0019] The nozzle is mounted on the nozzle seat; the nozzle seat is a hollow rod with one end closed and radially extending into the inner cavity of the steam pipe, and the other end of the nozzle seat (the end equipped with the cooling water inlet) penetrates the wall of the steam pipe and is fixed to the wall of the steam pipe through a threaded assembly (the threaded assembly is welded to the outer wall of the steam pipe); at the same time, the water pipe providing cooling water is also connected to the cooling water inlet through the threaded assembly. Obviously, this mounting structure is also a conventional structure.

[0020] The working principle of the utility model is that when working, most of the cooling water sprayed from the two nozzles is in mist form, and a small part of the water droplets will collide with each other due to the faster flow rate (the larger the water droplets, the heavier the corresponding weight, and the faster the spraying speed), thereby further colliding into mist, which can be better absorbed by the steam, thereby enhancing the cooling effect of the steam.

Claims

1. A double-nozzle steam desuperheater with opposite spraying, comprising a horizontally arranged steam pipe (1), and a nozzle installed on the wall of the steam pipe and radially extending into the steam pipe to spray desuperheating water; Features: The nozzle has at least two nozzles; the two nozzles are arranged at a certain distance and face each other; the injection centers of the two nozzles coincide with the inner cavity axis of the steam pipe.

2. The double-nozzle steam desuperheater according to claim 1 is characterized in that: The certain distance is 100-500 mm.

3. The double-nozzle steam desuperheater according to claim 2 is characterized in that: The nozzle is installed on the nozzle seat; the nozzle seat is a hollow rod with one end closed and radially extending into the inner cavity of the steam pipe, and the other end is provided with a cooling water inlet and the end penetrates the steam pipe wall and is fixed to the steam pipe wall through a threaded assembly.

4. The double-nozzle steam desuperheater according to claim 3 is characterized in that: The cooling water inlets of the two nozzles are located outside the steam pipe; the cooling water inlets are connected to a water pipe for providing cooling water.

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