Low-pressure steam drainage device

Abstract

The utility model discloses a low-pressure steam drainage device, which belongs to the technical field of steam pipelines and comprises a disc-type steam trap, the disc-type steam trap is communicated with a drainage cylinder through a pipeline, a floating ball is slidably connected in the drainage cylinder, the floating ball is slidably connected onto a guide component, and a drainage pipeline is arranged below the drainage cylinder to prevent steam from being directly discharged. The system efficiency is improved, water drainage is automatically controlled through the floating ball, manual adjustment is avoided, the system stability and the intelligent degree are improved, and steam leakage and the rime fog phenomenon are reduced through the water drainage structure.

Description

TECHNICAL FIELD

[0001] The utility model belongs to steam pipeline technical field, and specifically is a low pressure steam drainage device. BACKGROUND

[0002] In the steam delivery and drainage system, the disc type steam trap is widely used in the low pressure steam pipe network and the condensate water discharge of heat exchange equipment. Because the condensate water is inevitably produced in the process of steam flowing in the pipeline and equipment, if not timely removed, it will cause the steam flow in the pipeline to be blocked, reduce the heat transfer efficiency, and even cause water hammer phenomenon, affecting the system stability. The exhaust function of the disc type steam trap is crucial, mainly used for removing initial cold air and non-condensable gas, avoiding air resistance in the pipeline, ensuring smooth steam flow, and improving system thermal efficiency. In addition, during the condensate water discharge process, part of the entrained steam also needs to be controlled through a reasonable exhaust structure to prevent steam accumulation from affecting the operation of the trap.

[0003] However, in the long-term operation process, the disc type steam trap may be blocked due to internal impurity accumulation, scale deposition in the condensate water or high temperature and high pressure impact, once the trap is blocked, it cannot be normally closed or opened, the condensate water cannot be timely discharged, the heat exchange equipment is accumulated with water, the heat exchange efficiency is affected, and even the pipeline corrosion may be caused, in addition, when the valve core sealing surface of the trap is damaged or stuck, steam may directly leak to the outside through the exhaust port, causing energy loss, increasing operation cost, and forming a large amount of "white fog" phenomenon, affecting the on-site environment. INVENTION CONTENTS

[0004] The utility model aims at providing a low pressure steam drainage device to solve at least one aspect of the problems and defects in the above background technology.

[0005] A low pressure steam drainage device is provided, which comprises a disc type trap, a drainage cylinder is communicated with the disc type trap through a pipeline, a floating ball is slidably connected in the drainage cylinder, the floating ball is slidably connected to a guide assembly, and a drainage pipeline is arranged below the drainage cylinder.

[0006] Further, the guide assembly comprises two sliding sleeves, the two sliding sleeves are fixedly connected to the two sides of the floating ball, the two sliding sleeves are slidably connected to two fixed sleeve rods respectively, the two fixed sleeve rods are fixedly connected to the inside of the drainage cylinder, the floating ball is guided to linear motion in the vertical direction through the constraint of the two sliding sleeves and the two fixed sleeve rods, left and right shaking or tilting is avoided, the stability and precision of the drainage control are improved, the linear sliding structure of the sliding sleeve on the fixed sleeve rod can effectively inhibit the lateral shaking of the floating ball, inertia delay is reduced, the drainage system can quickly respond to water level change, the sensitivity of the trap is improved, steam loss is reduced, and the overall working efficiency of the equipment is improved.

[0007] Further, a liquid level sensor is arranged in the drainage cylinder, which can detect abnormal water level and send an alarm signal or trigger drainage measures to prevent system damage.

[0008] Further, a steam recovery pipeline is arranged above the drainage cylinder, which mainly reduces direct steam discharge, improves energy utilization efficiency and reduces "white mist" phenomenon.

[0009] Further, a thermal insulation layer is arranged outside the drainage cylinder, which mainly reduces heat loss, increases condensate temperature, reduces energy consumption and reduces condensate secondary evaporation, thereby improving the thermal efficiency and drainage performance of the system.

[0010] Further, a filter screen is arranged inside the drainage pipeline, which can effectively intercept impurities to prevent them from entering the drainage pipeline, thereby ensuring smooth condensate discharge and reducing maintenance frequency.

[0011] Compared with the prior art, the beneficial effects of the present application are as follows:

[0012] The floating ball senses water level changes and controls the opening and closing of the drainage pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to facilitate understanding of those skilled in the art, the present application will be further described below with reference to the accompanying drawings.

[0014] Figure 1 Fig. 1 is a schematic view of the overall structure of a low-pressure steam drainage device.

[0015] Figure 2 Fig. 4 is a top view of the rotating mechanism according to the present application.

[0016] In the figure: 1, disc type drain valve; 2, drainage cylinder; 21, thermal insulation layer; 3, floating ball; 4, guide assembly; 41, sliding sleeve; 42, fixed sleeve rod; 5, drainage pipeline; 51, filter screen; 6, liquid level sensor; 7, steam recovery pipeline. DETAILED DESCRIPTION

[0017] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as limiting the present application.

[0018] In the description of the present application, it is understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the indicated device or element to have a specific orientation, to be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0019] In the description of the present application, the meaning of several is one or more, and the meaning of multiple is two or more, greater than, less than, more than, etc. are understood as not including the number, and above, below, etc. are understood as including the number. If it is described as first, second, etc. is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0020] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0021] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application, that is, the described examples are only a part of the embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by the person skilled in the art without making creative efforts belong to the scope of protection of the present application.

[0023] Please refer to Figures 1-2As shown, in the utility model embodiment, a low-pressure steam drainage device, including disc type drain valve 1, disc type drain valve 1 is communicated with drain cylinder 2 by pipeline, and the inside of drain cylinder 2 is slidably connected with float ball 3, float ball 3 is slidably connected on guide assembly 4, and drain cylinder 2 is provided with drain pipeline 5 below;

[0024] Disc type drain valve 1 mainly relies on the pressure difference of steam and condensed water to drain, when steam pressure is high and condensed water is little, disc type drain valve 1 is closed, to prevent steam leakage, when condensed water accumulates to a certain degree, disc type drain valve 1 is opened, and condensed water is discharged to drain cylinder 2, with automatic opening and closing function, to reduce direct steam discharge, avoid " white fog " phenomenon, drain cylinder 2 stores water buffer, after condensed water enters drain cylinder 2 from disc type drain valve 1, will not be discharged immediately, but is temporarily stored, to avoid water flow pulse influence drainage stability, when the water level in drain cylinder 2 rises to a certain height, trigger float ball 3 action, open drain, reduce steam loss, control drainage through float ball 3, to ensure that only condensed water is discharged, without steam, even if disc type drain valve 1 is damaged, drain cylinder 2 can still be used as secondary protection, to prevent steam from leaking directly, reduce flow rate, prevent impact, float ball 3 and guide assembly 4, float ball 3 senses water level change, controls drain pipeline 5 opening and closing, water level rise makes float ball 3 float up, opens drain pipeline 5 to drain, until water level drops, float ball 3 sinks to start closing drain, drain pipeline 5 stops draining, drain pipeline 5 guides discharged condensed water out of system, to ensure that equipment continuously and efficiently operates, realizes accurate drainage, prevents steam from being discharged directly, improves system efficiency, automatically controls drainage through float ball 3, to avoid manual adjustment, improves system stability and intelligent degree, through drainage structure, reduces steam leakage, reduces " white fog " phenomenon.

[0025] In one embodiment, referring to Figure 1 And Figure 2 As shown, guide assembly 4 includes two sliding sleeves 41, two sliding sleeves 41 are fixedly connected on both sides of float ball 3, two sliding sleeves 41 are slidably connected on two fixed sleeve rods 42 respectively, two fixed sleeve rods 42 are fixedly connected inside drain cylinder 2, through the constraint of two sliding sleeves 41 and two fixed sleeve rods 42, float ball 3 is guided to linear motion in vertical direction, to avoid left and right swing or inclination, improve stability and accuracy of drainage control, the linear sliding structure of sliding sleeve 41 on fixed sleeve rod 42 can effectively inhibit the lateral swing of float ball 3, reduce inertia delay, make drainage system can quickly respond to water level change, improve sensitivity of drain, reduce steam loss, improve overall working efficiency of equipment.

[0026] In one embodiment, referring to Figure 1 And Figure 2As shown, the drainage cylinder 2 is also provided with a liquid level sensor 6, which can detect abnormal water level and send an alarm signal or trigger drainage measures to prevent system damage, and the liquid level sensor 6 can detect abnormal water level drop to remind maintenance personnel to check the disc type drain valve 1 state to prevent steam loss.

[0027] In one embodiment, please refer to Figure 1 and Figure 2 As shown, the drainage cylinder 2 is also provided with a steam recovery pipe 7 above the drainage cylinder 2, which mainly functions to reduce direct steam discharge, improve energy utilization efficiency, and reduce "white fog" phenomenon. The structure can recover uncondensed steam and guide it to be reused, thereby optimizing the overall performance of the drainage system.

[0028] In one embodiment, please refer to Figure 1 and Figure 2 As shown, the drainage cylinder 2 is also provided with a thermal insulation layer 21 outside the drainage cylinder 2, which mainly functions to reduce heat loss, increase condensate temperature, reduce energy consumption, reduce condensate secondary evaporation, and thereby improve the thermal efficiency and drainage performance of the system.

[0029] In one embodiment, please refer to Figure 1 and Figure 2 As shown, the drainage pipe 5 is also provided with a filter screen 51 inside the drainage pipe 5, which can effectively intercept these impurities to avoid entering the drainage pipe 5, thereby ensuring smooth discharge of condensate and reducing maintenance frequency.

[0030] The above content is only an example and description of the structure of the present utility model, and those skilled in the art can make various modifications or supplements or use similar ways to replace the described specific embodiments, as long as they do not deviate from the structure of the utility model or exceed the scope defined by the present claims, which shall belong to the protection scope of the present utility model.

Claims

1. A low-pressure steam trap comprising a disc-type trap valve (1), characterized in that, The disc type hydrophobic valve (1) is communicated with a drainage cylinder (2) through a pipeline, a floating ball (3) is slidably connected in the drainage cylinder (2), the floating ball (3) is slidably connected on a guide assembly (4), and a drainage pipeline (5) is arranged below the drainage cylinder (2).

2. A low pressure steam trap as defined in claim 1, wherein The guide assembly (4) comprises two sliding sleeves (41), the two sliding sleeves (41) are fixedly connected on both sides of the floating ball (3), the two sliding sleeves (41) are slidably connected on two fixed sleeve rods (42) respectively, and the two fixed sleeve rods (42) are fixedly connected in the drainage cylinder (2).

3. A low pressure steam trap as defined in claim 2 wherein, A liquid level sensor (6) is further arranged in the drainage cylinder (2).

4. A low pressure steam trap as defined in claim 3 wherein, A steam recovery pipeline (7) is further arranged above the drainage cylinder (2).

5. A low pressure steam trap as claimed in claim 4, wherein An insulating layer (21) is further arranged outside the drainage cylinder (2).

6. A low pressure steam trap as defined in claim 1 wherein, A filter screen (51) is further arranged in the drainage pipeline (5).

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