A Venturi phase change floating ball integrated precision steam trap

Abstract

The present invention provides a Venturi phase change floating ball integrated precision steam trap, which includes a main valve body, a steam condensate inlet communicated with the cavity of the main valve body, and a condensate output unit composed of a condensate aggregation cavity and a steam condensate outlet at the bottom of the main valve body. An internal filter sleeve is arranged in the main valve body, and a filter screen is installed outside the internal filter sleeve; it also includes a phase change floating ball unit, and the phase change floating ball unit includes a floating ball, a condensate drainage connecting piece connected to the floating ball, and a condensate discharge floating sleeve threadedly connected to the condensate drainage connecting piece. A single-phase steam-liquid phase change nozzle module is installed in the condensate discharge floating sleeve. The present invention realizes the precise and continuous discharge of the condensate volume, effectively suppresses the condensate fluctuation volume, achieves the effect of precise condensate discharge, and at the same time effectively prevents steam loss, ensuring the stability of the process temperature and process pressure.

Description

Technical Field

[0001] The present invention relates to the technical field of steam trap devices, and particularly to a Venturi phase change floating ball integrated precision steam trap. Background Art

[0002] As an important component in the industrial steam pipe network system, the steam trap plays a crucial role in industrial steam heat exchange. Because only steam is required for the equipment using steam, and this kind of heat-using equipment will definitely generate condensate during heat exchange. The condensate will absorb the steam energy and reduce the steam quality, causing the steam enthalpy value to decrease and thus the heat exchange rate to decline. The condensate becomes a harmful fluid, and at the same time, air and other non-condensable gases are mixed in, which becomes the cause of equipment failure and performance degradation.

[0003] The floating ball steam trap is a relatively common type, suitable for steam heating equipment with large fluctuations in the drainage flow rate. Its advantages are large displacement, good air discharge performance, continuous condensate drainage, small volume, simple structure, and easy replacement of the floating ball and valve seat. Generally, the discharged condensate has a fluctuation range. Affected by changes in steam supply quality, pressure, heat exchange efficiency of heat-using equipment, process conditions, etc., the discharged condensate volume is unstable. Due to the design structure and working principle of the traditional floating ball, the floating ball of the traditional floating ball fluctuates frequently, which is also prone to the phenomenon of simultaneous steam and water discharge and damage to internal components, resulting in a short service life. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a floating ball steam trap that can accurately and continuously discharge the condensate volume, effectively suppress the condensate fluctuation volume, achieve the effect of accurate and rapid condensate discharge, and at the same time effectively prevent steam loss and ensure the stability of process temperature and process pressure.

[0005] Based on the above problems, the technical solution proposed by the present invention is to provide a Venturi phase change floating ball integrated precision steam trap, which includes a main valve body, a steam condensate inlet communicated with the inner cavity of the main valve body, and a condensate output unit composed of a condensate aggregation cavity and a steam condensate outlet at the bottom of the main valve body. An internal filter sleeve is provided in the main valve body, and a filter screen is installed outside the internal filter sleeve.

[0006] It further includes a phase change floating ball unit. The phase change floating ball unit includes a stainless steel floating ball, a condensate drainage connecting piece connected to the floating ball, and a condensate discharge floating sleeve threadedly connected to the condensate drainage connecting piece. A single-body steam-liquid phase change nozzle module is installed in the condensate discharge floating sleeve.

[0007] The single-body steam-liquid phase change nozzle module is provided with a nozzle through hole, and the nozzle through hole is a Venturi nozzle.

[0008] Among them, a lower valve body connecting flange is provided between the main valve body and the condensate coagulation cavity, the main valve body and the lower valve body connecting flange are fixed by a bolt and nut pair, and the lower valve body connecting flange and the condensate coagulation cavity are welded.

[0009] Furthermore, the condensate discharge floating sleeve is positioned in the inner hole of the lower valve body connecting flange.

[0010] Furthermore, a sealing ring is installed at the connection between the condensate discharge floating sleeve and the lower valve body connecting flange.

[0011] Furthermore, the float and the condensate drainage connector are fixed via a connecting nut.

[0012] Furthermore, a nozzle through hole is provided on the monomer vapor-liquid phase change nozzle module, and the nozzle through hole is a Venturi nozzle connected to a Laval nozzle.

[0013] Advantages and beneficial effects of the present invention:

[0014] The present invention realizes accurate and continuous discharge of condensate and effectively smoothes the fluctuation of condensate. Generally, the discharged condensate has a fluctuation range. The flow value of the steam-liquid phase change nozzle single module is set according to the lower limit of the fluctuation. The upper limit fluctuation flow is smoothed by the working fluctuation of the float. The present design combines the phase change nozzle with the float, which is beneficial to their respective characteristic advantages. The main purpose is to reduce the number of ups and downs of the float and relatively extend the service life. The phase change nozzle meets the basic flow, and the float smoothes the fluctuation, reducing the steam loss caused by the fluctuation of the float that carries away the steam and water in the same row, thereby achieving the effect of rapid discharge of condensate and effectively preventing steam loss to ensure the stability of process temperature and process pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention.

[0016] Among them: 1. Inlet flange; 2. Valve body fixed top cover; 3. Built-in filter sleeve; 4. Filter screen; 5. Float; 6. Main valve body; 7. Bolt and nut pair; 8. Upper valve body connecting flange; 9. Lower valve body connecting flange; 10. Connecting nut; 11. Condensate drainage connector; 12. Monomer vapor-liquid phase change nozzle module; 13. Sealing ring; 14. Condensate discharge floating sleeve; 15. Condensate condensation chamber; 16. Condensate outlet short pipe; 17. Outlet flange; 18. Flange connecting short pipe; 19. Socket tee; 20. Connecting short pipe; 21. High-temperature ball valve. DETAILED DESCRIPTION

[0017] The specific implementation modes of the present invention are described in detail below with reference to the accompanying drawings.

[0018] like Figure 1As shown in the figure, a Venturi phase change floating ball integrated precision steam trap includes a main valve body 6, a steam condensate inlet communicating with the inner cavity of the main valve body 6, and a condensate output unit at the bottom of the main valve body 6 composed of a condensate condensation cavity 15 and a steam condensate outlet. The steam condensate inlet is composed of an inlet flange 1 and a flange connecting short pipe 18 connecting the inlet flange 1 and the main valve body 6. The steam condensate outlet is composed of an outlet flange 17 and a condensate guiding short pipe 16 connecting the condensate condensation cavity 15 and the outlet flange 17. In order to facilitate the release of high-temperature steam before disassembling the device to ensure the safety of the equipment and personnel, a socket tee 19 can be connected to the condensate guiding short pipe 16. One end of the socket tee 19 is connected to a high-temperature ball valve 21 through a connecting short pipe 20, and the other end is connected to the outlet flange 17 through a flange connecting short pipe 18. The top of the main valve body 6 is sealed by a valve body fixed top cover 2, and an internal filter sleeve 3 is arranged in the inner cavity of the main valve body 6, and a filter net 4 is installed outside the filter sleeve.

[0019] It also includes a phase change floating ball 5 unit. The phase change floating ball 5 unit includes a stainless steel floating ball 5, a condensate drainage connecting piece 11 connected to the floating ball 5, and a condensate discharge floating sleeve 14 threadedly connected to the condensate drainage connecting piece 11. The floating ball 5 and the condensate drainage connecting piece 11 are fixed by a connecting nut 10. A single-phase steam-liquid phase change nozzle module 12 is installed in the condensate discharge floating sleeve 14. The single-phase steam-liquid phase change nozzle module 12 is provided with a nozzle through hole, and the nozzle through hole is a Venturi nozzle. By utilizing the density difference between the condensate and the steam and the blocking effect of the two-phase flow on the steam when passing through the nozzle through hole, the condensate can be discharged accurately, continuously and in a timely manner, and at the same time, the internal steam loss can be effectively blocked.

[0020] A lower valve body connecting flange 9 is arranged between the main valve body 6 and the condensate condensation cavity 15 body. The bottom of the main valve body 6 is provided with an upper valve body connecting flange 8 extending outwards, which is fixed to the lower valve body connecting flange 9 through a bolt and nut pair 7, and the lower valve body connecting flange 9 and the condensate condensation cavity 15 body are welded and connected. The condensate discharge floating sleeve 14 is an unequal-diameter pipe body, and the single-phase steam-liquid phase change nozzle module 12 is arranged in a T shape. The inner hole of the condensate discharge floating sleeve 14 is matched and connected with the single-phase steam-liquid phase change nozzle module 12, and the diameter of the central hole of the lower valve body connecting flange 9 is matched and connected with a section of the smaller diameter of the condensate discharge floating sleeve 14. A sealing ring 13 is installed at the connection between the large-diameter end of the condensate discharge floating sleeve 14 and the lower valve body connecting flange 9.

[0021] The design of the single-component vapor-liquid phase change nozzle module 12 mainly solves the problem that in the vapor-liquid two-phase flow state, the vapor phase is transformed into the liquid phase to reduce the loss of steam in condensate discharge. Combined with the floating ball 5, the advantages of both are fully utilized. Generally, the discharged condensate has a fluctuating range. The basic flow rate of the lower limit of the condensate discharged by the single-component vapor-liquid phase change nozzle module 12. When the fluctuation of the condensate increases, the single-component vapor-liquid phase change nozzle module 12 cannot meet the timely discharge requirement, and the liquid level of the condensate in the shell rises, driving the floating ball 5 to float. After the condensate can be quickly and timely discharged, the floating ball 5 descends and repeats continuously, ensuring the timely and rapid discharge of the condensate in the shell. After the condensate discharge rate is stable, the phase change nozzle module continues to work to reduce the number of fluctuations of the floating ball 5, and at the same time reduce the steam loss caused by the fluctuations of the floating ball 5. It is necessary to prevent steam loss, suppress the fluctuation of the condensate, and at the same time reduce the number of fluctuations of the floating ball 5, and finally achieve the effect of pressure retention and efficiency increase.

[0022] One embodiment of the present invention has been described in detail above, but the content described is only a preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. Any equivalent changes and improvements made within the scope of the application of the present invention shall still fall within the scope covered by the patent of the present invention.

Claims

1. A venturi phase change float integrated precision steam trap, comprising a main valve body, a steam condensate inlet communicating with the inner cavity of the main valve body, and a condensate output unit at the bottom of the main valve body composed of a condensate coagulation cavity and a steam condensate outlet, characterized in that: An internal filter sleeve is provided inside the main valve body, and a filter screen is installed outside the internal filter sleeve; It further includes a phase change float unit, and the phase change float unit includes a float, a condensate drainage connecting part connected to the float, and a condensate discharge floating sleeve screwed to the condensate drainage connecting part, and a single-phase steam-liquid phase change nozzle module is installed inside the condensate discharge floating sleeve; The single-phase steam-liquid phase change nozzle module is provided with a nozzle through hole, and the nozzle through hole is a Venturi nozzle; A lower valve body connecting flange is provided between the main valve body and the condensate condensation cavity, the main valve body and the lower valve body connecting flange are fixed by a bolt-nut pair, and the lower valve body connecting flange and the condensate condensation cavity are welded and connected; The float and the condensate drainage connecting part are fixed by a connecting nut.

2. The Venturi phase change floating ball integrated precise steam trap according to claim 1, wherein: The condensate discharge floating sleeve is clamped in the central hole of the lower valve body connecting flange.

3. The Venturi phase change floating ball integrated precision steam trap according to claim 2, characterized in that: A sealing ring is installed at the connection between the condensate discharge floating sleeve and the lower valve body connecting flange.

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