Desuperheating water heat tracing desuperheater

Abstract

The utility model relates to a temperature and pressure reducing device, and aims to provide a temperature reducing water heat tracing temperature reducer which has the characteristics of good temperature reducing effect, simple structure and low cost. According to the technical scheme, the desuperheating water heat tracing desuperheater comprises a steam pipeline, a Venturi tube installed in an inner cavity of the steam pipeline and a nozzle installed in the Venturi tube. The device is characterized in that a desuperheating water heat tracing device is further installed in an inner cavity of the steam pipeline, and an input water pipe at the lower end of the desuperheating water heat tracing device penetrates through the pipe wall of the steam pipeline from inside to outside and then serves as a desuperheating water inlet; an output water pipe at the upper end of the desuperheating water heat tracing device penetrates through the pipe wall of the steam pipeline from inside to outside, then extends out of the steam pipeline and then is communicated with the nozzle, and therefore desuperheating water needed by the nozzle is provided for the nozzle.

Description

Technical Field

[0001] The utility model relates to a desuperheating and pressure-reducing device, specifically a desuperheating water tracing desuperheater. Background Art

[0002] CN115899314A discloses a desuperheating and pressure-reducing valve, which includes a valve sleeve provided with a valve sleeve inner cavity (201); a valve body sleeved outside the valve sleeve and provided with a valve body inner cavity (101) communicated with the valve sleeve inner cavity (201); and a bypass pipeline located outside the valve body and including a bypass upper port and a bypass lower port that are communicated with the valve sleeve inner cavity (201) and axially spaced apart. The medium of the desuperheating and pressure-reducing valve can flow through the valve sleeve inner cavity (201) and the valve body inner cavity (101) along the bypass pipeline to preheat the valve body and the valve sleeve. A discharge pipeline (810) is arranged on the bypass pipeline between the bypass upper port and the bypass lower port, so that impurities in the valve sleeve inner cavity (201) can be discharged along the discharge pipeline (810). This desuperheating and pressure-reducing valve can be purged, drained, and preheated without disassembly, saving costs, being convenient to operate, greatly saving the construction period, and ensuring the stable operation of the desuperheating and pressure-reducing valve.

[0003] The disadvantage of this desuperheating and pressure-reducing valve is that its structure is relatively complex, the manufacturing is troublesome, and the cost is also relatively high. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is: overcoming the deficiencies of the above background art, providing a desuperheating water tracing desuperheater, which should have the characteristics of good desuperheating effect, simple structure, and low cost.

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

[0006] A desuperheating water tracing desuperheater includes a steam pipeline, a Venturi tube installed in the inner cavity of the steam pipeline, and a nozzle installed in the Venturi tube; characterized in that: a desuperheating water tracer is also installed in the inner cavity of the steam pipeline, and the input water pipe at the lower end of the desuperheating water tracer penetrates the pipe wall of the steam pipeline from inside to outside and serves as the desuperheating water inlet; the output water pipe at the upper end of the desuperheating water tracer penetrates the pipe wall of the steam pipeline from inside to outside and extends outside the steam pipeline, and then communicates with the nozzle, so as to provide the required desuperheating water for the nozzle.

[0007] The input pipe or the output pipe is hermetically connected to the pipe wall of the steam pipeline.

[0008] The desuperheating water tracer is a flat rectangular body, and a number of channels are arranged on the rectangular body in parallel and penetrate through the two flat sides on both sides, so that a number of parallel flow channels are formed in the inner cavity of the rectangular body; the two ends of these flow channels are connected in parallel to form the input pipe and the output pipe respectively, and then penetrate through the outer wall of the desuperheating water tracer.

[0009] The axes of the plurality of flow channels are perpendicular to the axis of the input pipe or the output pipe, and perpendicular to the axis of the steam pipe.

[0010] The spacing between every two flow channels and between the flow channels and the inner wall surface of the desuperheating water heater is equal.

[0011] The outer contour of the desuperheating water heater is smaller than the inner diameter of the steam pipe.

[0012] The input pipe and the output pipe are coaxially arranged.

[0013] The beneficial effects of the present utility model are as follows: The desuperheating water heater provided by the present utility model can effectively increase the temperature of the desuperheating water (especially the low-temperature desuperheating water), reduce the temperature difference between the desuperheating water and the steam, thereby improving the atomization effect of the desuperheating water and the desuperheating effect on the steam; moreover, the structure is simple, the manufacturing is convenient, the cost is not high, and the practicability is also strong. Description of the Drawings

[0014] Figure 1 It is a schematic front view structure diagram of an embodiment of the present utility model.

[0015] Figure 2 It is a schematic structure diagram of the desuperheating water heater in this embodiment ( Figure 1 view in the right view direction).

[0016] Reference numerals in the figure: steam pipe 1, desuperheating water heater 2, flow channel 2-1, water pipe 3, nozzle 4, venturi tube 5, desuperheating water mist 6. Detailed Embodiment

[0017] The following is further described in conjunction with the embodiments shown in the drawings.

[0018] The desuperheating water heater shown in the drawings; includes a steam pipe 1, a venturi tube 5 installed in the inner cavity of the steam pipe, and a nozzle 4 installed on the venturi tube; this structure is similar to the existing desuperheating device.

[0019] The improvement of the present utility model is: A desuperheating water heater 2 is also installed in the inner cavity of the steam pipe; the upper and lower ends of the desuperheating water heater are respectively provided with an input pipe and an output pipe; wherein, the input water pipe at the lower end of the desuperheating water heater penetrates through the pipe wall of the steam pipe and serves as the desuperheating water inlet; the output water pipe at the upper end of the desuperheating water heater penetrates through the pipe wall of the steam pipe from the inside to the outside and extends outside the steam pipe, and then is connected through a water pipe 3 (the output water pipe and the water pipe can also be integrated) to the nozzle (it can be seen from the figure that the nozzle head of the nozzle protrudes on the inner wall of the venturi tube, and the input end of the nozzle extends outside the steam pipe; the output water pipe is connected to the input end of the nozzle through a water pipe joint), so as to provide the required desuperheating water for the nozzle. The input pipe or the output pipe is hermetically connected to the pipe wall of the steam pipe.

[0020] As can be seen from the figure: The desuperheating water heater is a flat rectangular body. A number of channels 2-2 are arranged on the rectangular body in parallel and penetrate through the two flat sides, so that a number of parallel flow channels 2-1 are formed in the inner cavity of the rectangular body; the two ends of these flow channels are connected in parallel to form an input pipe and an output pipe respectively, and then penetrate through the outer wall of the desuperheating water heater; after being installed in the steam pipeline (obviously, the outer contour of the desuperheating water heater is smaller than the inner diameter of the steam pipeline), the said channels can be used for steam circulation, which is beneficial to improving the heat exchange efficiency.

[0021] The axes of the said number of flow channels are parallel to the axis of the input pipe or the output pipe, and perpendicular to the axis of the steam pipeline.

[0022] Furthermore, the spacing between every two flow channels is equal.

[0023] Furthermore, the input pipe and the output pipe are coaxially arranged.

[0024] The working principle of the present utility model is: For the present utility model, it only needs to connect the steam source at the inlet of the steam pipe, and use the input pipe of the desuperheating water heater as the desuperheating water inlet to input desuperheating water. Since the output pipe of the desuperheating water heater is connected to the nozzle installed on the steam pipeline, after the desuperheating water is heated by the steam, it forms a water mist through the nozzle and is sprayed into the steam pipeline to cool the steam in the steam pipeline; since the desuperheating water is heated by the steam (meanwhile, the steam also loses part of its heat), the temperature difference between the desuperheating water and the steam temperature decreases, and the desuperheating water becomes more active, which helps the atomization of the desuperheating water, and further improves the steam cooling effect.

Claims

1. A desuperheating water tracing desuperheater, comprising a steam pipe (1), a venturi tube (5) installed in the inner cavity of the steam pipe, and a nozzle (4) installed in the venturi tube; characterized in that: A cooling water heater (2) is also installed in the inner cavity of the steam pipe. The input water pipe at the lower end of the cooling water heater penetrates the wall of the steam pipe from the inside to the outside and serves as the cooling water inlet. The output water pipe at the upper end of the cooling water heater penetrates the wall of the steam pipe from the inside to the outside and extends outside the steam pipe, and then connects to the nozzle, thereby providing the nozzle with the required cooling water.

2. The desuperheating water tracing desuperheater according to claim 1, characterized in that: The desuperheating water heater is a flat rectangular body, on which are provided a plurality of channels (2-2) which are arranged in parallel with each other and penetrate the flat surfaces on both sides, so that the inner cavity of the rectangular body forms a plurality of parallel flow channels (2-1); the two ends of these flow channels are connected in parallel to form an input pipe and an output pipe respectively, and then penetrate the outer wall of the desuperheating water heater.

3. The desuperheating water tracing desuperheater according to claim 2, characterized in that: The axes of the plurality of flow channels are parallel to the axis of the input pipe or the output pipe, and perpendicular to the axis of the steam pipeline.

4. The desuperheating water tracing desuperheater according to claim 3, characterized in that: The spacing between two flow channels is equal.

5. The desuperheating water tracing desuperheater according to claim 4, characterized in that: The input pipe and the output pipe are coaxially arranged, and the input pipe or the output pipe is sealedly connected to the pipe wall of the steam pipeline.

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