Split type temperature and pressure reducing device of heating station

Abstract

The utility model relates to the technical field of temperature and pressure reduction of heating stations, in particular to a split type temperature and pressure reduction device of a heating station, which comprises an air inlet pipe and an electric pressure reduction valve arranged on the outer side of the air inlet pipe. A spring safety valve, a pressure gauge for measuring the internal pressure of the pressure reducing pipeline and a thermometer for measuring the internal temperature of the pressure reducing pipeline are sequentially arranged on the outer side of the pressure reducing pipeline; the cooling assembly is mounted on the outer side of the pressure reducing pipeline to reduce the steam temperature; the utility model relates to a split type temperature and pressure reducing device, which consists of an electric pressure reducing valve, a pressure reducing pipeline, a spring safety valve, an electric water supply regulating valve and the like, and is mainly characterized in that a pressure reducing system and a temperature reducing system are separated and are mainly used for severe working conditions, such as working conditions of low steam flow, inapplicability to adopting the temperature and pressure reducing valve and saturated steam; the valve body is designed to be resistant to high temperature and high pressure, resistant to cavitation and capable of reducing noise and is made of alloy steel or surfacing stellite to improve hardness and abrasion resistance.

Description

Technical Field

[0001] The utility model relates to the technical field of desuperheating and pressure reducing in heat power stations, and particularly relates to a split desuperheating and pressure reducing device for a heat power station. Background Technique

[0002] The high-temperature reducing and pressure reducing device in a heat power station is a device used to reduce the temperature and pressure of high-temperature and high-pressure gases during transportation. Its purpose is to ensure the safe and stable operation of pipelines and improve energy utilization efficiency at the same time. This device can be widely used in industrial production, petrochemical industry, natural gas transmission and other fields.

[0003] Currently, the pipeline of the high-temperature reducing and pressure reducing device vibrates greatly, and the packing of the pressure reducing valve is easy to spray out. At present, the pressure reducing valve is fully opened, and the outlet pressure is controlled by the jogging of the inlet electric valve. If the inlet electric valve fails to fully open during jogging or there is a misoperation by personnel, it will cause the high-temperature reducing safety valve to trip, the main steam pressure and flow of the boiler to fluctuate, the outlet pipeline of the high-temperature reducing device to be over-pressurized, the desuperheating and pressure reducing valve body of the high-temperature reducing device to be eroded by high-temperature and high-pressure steam for a long time, cavitation to occur in the valve body, the flow characteristics of the valve to change, the regulating linearity of the valve to become poor, and it cannot meet the process adjustment. The original design of a single set of desuperheating and pressure reducing device has too much steam surplus, and the actual steam demand is small, resulting in the regulating valve being in a small opening state for a long time, so that the valve cores of the pressure regulating valve and the temperature regulating valve are severely eroded, the flow coefficient and the valve linearity change, and normal regulation cannot be carried out. The electric valve is normally used as an emergency isolation. Currently, on-site jogging operation is carried out. On the one hand, it is easy to erode the valve core and fail to play an isolation role; on the other hand, in case of abnormal situations, emergency remote control operation cannot be carried out, affecting the safety of personnel and equipment. Content of the Utility Model

[0004] The purpose of the utility model is to provide a split desuperheating and pressure reducing device for a heat power station to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A split desuperheating and pressure reducing device for a heat power station, including an inlet pipe, and further including:

[0006] An electric pressure reducing valve arranged outside the inlet pipe, a pressure reducing pipe is communicated with the outside of the electric pressure reducing valve, and a spring safety valve, a pressure gauge for measuring the internal pressure of the pressure reducing pipe, and a thermometer for measuring the internal temperature of the pressure reducing pipe are sequentially arranged outside the pressure reducing pipe;

[0007] A cooling component installed outside the pressure reducing pipe to reduce the steam temperature, an installation component for installing and fixing the pipe is arranged outside the pressure reducing pipe, and an adjusting component for facilitating the installation of a moving pipe is arranged outside the installation component.

[0008] Preferably, the temperature reduction component includes a desuperheating water pipe arranged outside the pressure reduction pipeline, and a stop valve, a throttle valve, an electric feed water regulating valve, a check valve and a nozzle are sequentially arranged outside the desuperheating water pipe.

[0009] Preferably, the valve bodies are all designed with high temperature and high pressure resistance, cavitation resistance and noise reduction, and the material is alloy steel or stellite alloy surfacing to improve hardness and wear resistance.

[0010] Preferably, the installation component includes a base arranged outside the pressure reduction pipeline, and a clamping seat is fixedly connected to the top of the base through bolts.

[0011] Preferably, the adjustment component includes a ratchet and a turntable arranged outside the clamping seat. The ratchet and the turntable are coaxially connected. A pawl is arranged outside the ratchet. A connecting plate is arranged outside the pawl, and a spring fixedly connected to the pawl is arranged outside the connecting plate.

[0012] Preferably, a grip rod is arranged outside the connecting plate, and an anti-slip strip is arranged outside the turntable.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] The present utility model is a split type desuperheating and pressure reducing device, which is composed of an electric pressure reducing valve, a pressure reduction pipeline, a spring safety valve, an electric feed water regulating valve, etc. Its main features are: the pressure reduction system and the desuperheating system are separated, and it is mainly used in harsh working conditions, such as when the steam flow is small and the desuperheating and pressure reducing valve is not applicable, and in the working conditions of saturated steam. The valve body is designed with high temperature and high pressure resistance, cavitation resistance and noise reduction, and the material is alloy steel or stellite alloy surfacing to improve hardness and wear resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a structural schematic diagram of the present utility model;

[0016] Figure 2 is a structural schematic diagram of the temperature reduction component of the present utility model;

[0017] Figure 3 is a structural schematic diagram of the installation component of the present utility model;

[0018] Figure 4 is a structural schematic diagram of the adjustment component of the present utility model.

[0019] In the figure: 1. Inlet pipe; 2. Electric pressure reducing valve; 3. Pressure reducing pipeline; 4. Spring safety valve; 5. Pressure gauge; 6. Thermometer; 7. Cooling component; 701. Desuperheating water pipeline; 702. Globe valve; 703. Throttle valve; 704. Electric feed water regulating valve; 705. Check valve; 706. Nozzle; 8. Installation component; 801. Base; 802. Clamp; 9. Adjusting component; 901. Ratchet; 902. Turntable; 903. Pawl; 904. Connecting plate; 905. Spring; 10. Grip rod. Specific embodiments

[0020] To further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following will, in conjunction with the accompanying drawings and preferred embodiments, detail the specific embodiments, structures, features and their effects of the present utility model as follows.

[0021] Please refer to Figures 1-4 As shown in the figure, a split type desuperheating and pressure reducing device for a heat power station includes an inlet pipe 1, and further includes: an electric pressure reducing valve 2 arranged outside the inlet pipe 1 to reduce the steam pressure by using the electric pressure reducing valve 2. A pressure reducing pipeline 3 is connected to the outside of the electric pressure reducing valve 2. A spring safety valve 4, a pressure gauge 5 for measuring the internal pressure of the pressure reducing pipeline 3, and a thermometer 6 for measuring the internal temperature of the pressure reducing pipeline 3 are sequentially arranged on the outside of the pressure reducing pipeline 3; a cooling component 7 installed outside the pressure reducing pipeline 3 to reduce the steam temperature, and the cooling component 7 is used to cool the steam inside the pressure reducing pipeline 3; an installation component 8 for installing and fixing the pipeline is arranged on the outside of the pressure reducing pipeline 3, and the installation component 8 is used to install and fix the pipeline. An adjusting component 9 for facilitating the installation of the moving pipeline is arranged on the outside of the installation component 8, and the adjusting component 9 is used to finely adjust and move the pipeline to facilitate the connection of the pipeline.

[0022] The cooling component 7 includes a desuperheating water pipeline 701 arranged outside the pressure reducing pipeline 3. The desuperheating water pipeline 701 is connected to the pressure reducing pipeline 3. A globe valve 702, a throttle valve 703, an electric feed water regulating valve 704 and a check valve 705 are sequentially arranged on the outside of the desuperheating water pipeline 701. The globe valve 702, the throttle valve 703, the electric feed water regulating valve 704, the check valve 705 and the nozzle 706 are all connected to the desuperheating water pipeline 701. Desuperheating water is input into the nozzle 706 by using the desuperheating water pipeline 701, and the nozzle 706 is used to cool the pressure reducing pipeline 3.

[0023] The valve bodies are all designed with high temperature and high pressure resistance, cavitation resistance and noise reduction. The material is made of alloy steel or Stellite alloy surfacing to improve hardness and wear resistance.

[0024] The installation component 8 includes a base 801 disposed outside the pressure reduction pipeline 3. The top of the base 801 is fixedly connected with a clamping seat 802 by bolts. First, place the pipeline into the base 801, and then fix the clamping seat 802 on the base 801 to install and fix the pipeline.

[0025] The adjustment component 9 includes a ratchet wheel 901 and a turntable 902 disposed outside the clamping seat 802. The ratchet wheel 901 and the turntable 902 are coaxially connected. The ratchet wheel 901 and the turntable 902 are fixed on the same axis, and the connecting shaft is rotatably connected to the clamping seat 802. A pawl 903 is disposed outside the ratchet wheel 901. A connecting plate 904 is disposed outside the pawl 903. The connecting plate 904 is rotatably connected to the connecting shaft. A spring 905 fixedly connected to the pawl 903 is disposed outside the connecting plate 904. The pawl 903 is rotatably connected to the connecting plate 904. The pawl 903 is connected to the connecting plate 904 through the spring 905. By rotating the connecting plate 904 to drive the pawl 903 to move, the pawl 903 engages with the ratchet wheel 901 to push the ratchet wheel 901 to rotate. The ratchet wheel 901 drives the turntable 902 to rotate. The turntable 902 pushes the pipeline to move, so as to dock and install the pipelines together.

[0026] A grip rod 10 is disposed outside the connecting plate 904. The grip rod 10 facilitates the user to rotate the connecting plate 904. Anti-slip stripes are disposed outside the turntable 902. The anti-slip stripes increase the friction outside the turntable 902 and facilitate driving the pipeline to move.

[0027] Working principle: The split type desuperheating and pressure reducing device is composed of an electric pressure reducing valve 2, a pressure reduction pipeline 3, a spring safety valve 4, an electric feed water regulating valve 704, etc. Its main features are: the pressure reduction system and the desuperheating system are separated, and it is mainly used in harsh working conditions, such as when the steam flow is small and it is not suitable to use a desuperheating and pressure reducing valve, and for the working condition of saturated steam. The valve body adopts high temperature and high pressure resistance, cavitation resistance, and noise reduction design. The material is made of alloy steel or surfacing stellite alloy to improve hardness and wear resistance. By rotating the connecting plate 904 to drive the pawl 903 to move, the pawl 903 engages with the ratchet wheel 901 to push the ratchet wheel 901 to rotate. The ratchet wheel 901 drives the turntable 902 to rotate. The turntable 902 pushes the pipeline to move, so as to dock and install the pipelines together.

[0028] The above is only a preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention. Although the present invention has been disclosed above with a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to obtain an equivalent embodiment with equivalent changes within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A split type desuperheating and pressure reducing device for a heat supply station, comprising an intake pipe (1), characterized in that, Further included are: An electric pressure reducing valve (2) disposed outside the intake pipe (1). A pressure reducing pipe (3) is communicated with the outside of the electric pressure reducing valve (2). A spring safety valve (4), a pressure gauge (5) for measuring the internal pressure of the pressure reducing pipe (3), and a thermometer (6) for measuring the internal temperature of the pressure reducing pipe (3) are sequentially arranged outside the pressure reducing pipe (3). A cooling component (7) installed outside the pressure reducing pipe (3) to reduce the steam temperature. An installation component (8) for installing and fixing the pipe is arranged outside the pressure reducing pipe (3). An adjustment component (9) for facilitating the installation of the moving pipe is arranged outside the installation component (8).

2. The split type desuperheating and pressure reducing device for heat power station according to claim 1, wherein: The cooling component (7) includes a desuperheating water pipe (701) disposed outside the pressure reducing pipe (3). A stop valve (702), a throttle valve (703), an electric feed water regulating valve (704), a check valve (705), and a nozzle (706) are sequentially arranged outside the desuperheating water pipe (701).

3. The split type desuperheating and pressure reducing device for heat supply station according to claim 1, characterized in that: The valve bodies are all designed with high temperature and high pressure resistance, cavitation resistance, and noise reduction. The material is made of alloy steel or stellite alloy surfacing to improve hardness and wear resistance.

4. A split type desuperheating and pressure reducing device for a heat supply station according to claim 1, characterized in that: The installation component (8) includes a base (801) disposed outside the pressure reducing pipe (3). A clamping seat (802) is fixedly connected to the top of the base (801) by bolts.

5. A split type desuperheating and pressure reducing device for a heat supply station according to claim 4, characterized in that: The adjustment component (9) includes a ratchet wheel (901) and a turntable (902) disposed outside the clamping seat (802). The ratchet wheel (901) and the turntable (902) are coaxially connected. A pawl (903) is arranged outside the ratchet wheel (901). A connecting plate (904) is arranged outside the pawl (903). A spring (905) fixedly connected to the pawl (903) is arranged outside the connecting plate (904).

6. The split type desuperheating and pressure reducing device for heat supply station according to claim 5, wherein: A grip rod (10) is arranged outside the connecting plate (904). Anti-slip strips are arranged outside the turntable (902).

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