Self-powered and self-anti-freezing drain valve anti-freezing system in steam pipe network

Abstract

The self-powered and self-anti-freezing drain valve anti-freezing system in the steam pipe network comprises a temperature difference power generation mechanism, the steam pipe network and an anti-freezing mechanism, the temperature difference power generation mechanism comprises a temperature difference power generation piece and a temperature control switch, the anti-freezing mechanism comprises a direct-current pump, the temperature difference power generation piece is arranged at the hot end of the steam pipe network, and the temperature control switch is arranged at the hot end of the steam pipe network. One end of the temperature control switch is electrically connected with the power output end of the thermoelectric power generation sheet through a wire, and the other end is electrically connected with the direct-current pump of the anti-freezing mechanism. And a heat exchange part of the anti-freezing mechanism is arranged at the cold end of the steam pipe network. The steam pipe network comprises a steam pipeline and a drain valve arranged at the cold end of the steam pipeline, a hot electrode of the thermoelectric power generation sheet is arranged at the hot end of the steam pipe network, a cooling fin is arranged on a cold electrode of the thermoelectric power generation sheet, and the temperature control switch is fixed on the drain valve.

Description

Technical Field

[0001] The invention belongs to the technical field of steam pipe network antifreeze, and relates to an antifreeze mechanism of a steam trap in a steam pipe network, in particular to a self-powered and self-antifreeze steam trap antifreeze system in a steam pipe network. Background Art

[0002] Steam traps in steam pipe networks play an important role in water treatment systems. They are mainly used to discharge condensed water and air in steam pipe networks to prevent pipes and equipment from being damaged by water or air accumulation. The working principle is to use the density between steam and condensed water to achieve automatic discharge of condensed water: when steam passes through the steam trap, condensed water will be collected at the bottom of the valve body and discharged through the automatic discharge mechanism. However, when the ambient temperature drops below freezing, condensed water may freeze and cause the steam trap to become blocked or damaged, resulting in system failure. In order to avoid this situation, effective antifreeze measures must be taken:

[0003] 1. Wrap with insulation materials: For steam traps and pipes exposed outdoors, wrap them with insulation materials. Common insulation materials include glass fiber, rock wool, etc. These materials have good insulation properties and can effectively reduce heat loss and prevent water in pipes and valves from freezing. However, insulation materials will break and age over time and require regular manual maintenance;

[0004] 2. Use heating tape: In a severely cold environment, heating tape can be installed on the outside of the steam trap and the pipe. The heating tape maintains the temperature in the pipe and prevents freezing by electrically heating. However, this method requires the use of an independent power supply and a circuit that complies with relevant electrical safety regulations. The laying of the circuit needs to be considered, which has certain limitations and consumes a lot of electricity, resulting in high antifreeze costs. Summary of the invention

[0005] The present invention aims to provide a steam trap antifreeze system with self-power supply and self-antifreeze in a steam pipe network, so as to solve the technical problems existing in the prior art of high antifreeze cost and the need for manual regular maintenance of thermal insulation materials.

[0006] To achieve the above purpose, the specific technical solutions of the present invention are as follows:

[0007] A self-powered and self-freezing steam trap antifreeze system in a steam network, comprising a temperature difference power generation mechanism, a steam network and an antifreeze mechanism, wherein the temperature difference power generation mechanism comprises a temperature difference power generation sheet and a temperature control switch, and the antifreeze mechanism comprises a DC pump. The temperature difference power generation sheet is arranged on the hot end of the steam network, one end of the temperature control switch is electrically connected to the power output end of the temperature difference power generation sheet through a wire, and the other end is electrically connected to the DC pump of the antifreeze mechanism; the heat exchange part of the antifreeze mechanism is arranged at the cold end of the steam network.

[0008] The steam network includes a steam pipeline and a steam trap arranged at the cold end of the steam pipeline. The hot pole of the thermoelectric power generation sheet is arranged at the hot end of the steam network. The cold pole of the thermoelectric power generation sheet is provided with a heat sink of sufficient size. The temperature control switch is fixed on the steam trap.

[0009] The antifreeze mechanism also includes an antifreeze tank, a main heat exchanger and an auxiliary heat exchanger. The main heat exchanger is fixed on the steam pipe, and the auxiliary heat exchanger is fixed on the steam trap. The antifreeze tank, the DC pump, the main heat exchanger and the auxiliary heat exchanger are connected in series through pipelines.

[0010] There are multiple thermoelectric power generation sheets, which are connected in series or in parallel to match the power and voltage of the DC pump.

[0011] The temperature control switch is a temperature control switch, or a temperature control switch composed of a temperature sensor and a temperature controller.

[0012] The beneficial effects of the present invention are as follows: the present invention provides a self-powered and self-freezing antifreeze system for steam traps in a steam network, a temperature difference power generation mechanism and an antifreeze mechanism are arranged in the system, and the temperature difference power generation mechanism uses the heat of the steam network to establish a temperature difference between its hot end and cold end, thereby generating an electric current, and the temperature difference power generation mechanism is connected to the circuit of the antifreeze mechanism to drive the DC pump of the antifreeze mechanism to work, and drive the antifreeze liquid to transfer heat from the steam pipe to the steam trap along the pipeline to achieve antifreeze of the steam trap, thereby achieving the technical effects of self-power supply and self-freeze. The antifreeze system no longer needs to set up an independent power supply externally, nor does it need to consider the laying of external circuits, thereby eliminating the limitations of the antifreeze system setting, and at the same time does not need to consume additional electricity, can effectively reduce the antifreeze cost, and does not need to worry about the problem of damage to the thermal insulation material, which is simple and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A simplified schematic diagram of the system of the present invention;

[0014] Explanation of the markings in the figure: 1. Temperature difference power generation sheet, 2. Temperature control switch, 3. Steam trap, 4. DC pump, 5. Auxiliary heat exchanger, 6. Antifreeze tank, 7. Main heat exchanger, 8. Steam pipe. DETAILED DESCRIPTION

[0015] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings.

[0016] like Figure 1As shown, the present invention provides a self-powered and self-freezing antifreeze trap antifreeze system in a steam network, which includes a temperature difference power generation mechanism, a steam network and an antifreeze mechanism. The steam network in this embodiment includes a steam pipe 8 and a steam trap 3 arranged at the cold end of the steam pipe 8. By arranging a temperature difference power generation mechanism on the steam pipe 8, the temperature difference power generation mechanism is used to extract heat energy on the steam network and convert it into electrical energy, thereby powering the antifreeze mechanism, so that the system can perform antifreeze work by self-powering.

[0017] Specifically, the temperature difference power generation mechanism in this embodiment includes a temperature difference power generation sheet 1 and a temperature control switch 2, the antifreeze mechanism includes a DC pump 4, an antifreeze tank 6 and a heat exchange part, the antifreeze tank 6 is filled with antifreeze, the hot pole of the temperature difference power generation sheet 1 is arranged on the hot end of the steam network, and the cold pole of the temperature difference power generation sheet is provided with a heat sink of sufficient size, so as to generate temperature difference power generation; the temperature control switch 2 is fixed on the steam trap 3, one end of the temperature control switch 2 is electrically connected to the power output end of the temperature difference power generation sheet 1 through a wire, and the other end is electrically connected to the DC pump 4 of the antifreeze mechanism for driving the DC pump 4 to work; the heat exchange part of the antifreeze mechanism is arranged on the cold end steam trap 3 of the steam network, and the DC pump 4 is used to drive the antifreeze liquid to circulate and exchange heat, so that the system performs self-antifreeze work.

[0018] In this embodiment, the heat exchange unit in this embodiment includes a main heat exchanger 7 and an auxiliary heat exchanger 5, the main heat exchanger 7 is fixed on the steam pipe 8, the auxiliary heat exchanger 5 is fixed on the steam trap 3, and the antifreeze tank 6, the DC pump 4, the main heat exchanger 7 and the auxiliary heat exchanger 5 are connected in series through pipelines in sequence. The main heat exchanger 7 is used to perform a primary heat exchange between the cold antifreeze and the steam pipe 8, and circulate the hot antifreeze to the auxiliary heat exchanger 5 so that the hot antifreeze and the cold steam trap 3 are subjected to a secondary heat exchange, thereby realizing the antifreeze of the steam trap 3.

[0019] In addition, the number of the thermoelectric power generation sheets 1 can be one or more. In the present embodiment, the number of the thermoelectric power generation sheets 1 is multiple, and the specific number depends on the power and voltage of the DC pump 4. There is no specific restriction in the present embodiment. The multiple thermoelectric power generation sheets 1 are connected in series or in parallel to match the power and voltage of the DC pump 4.

[0020] The temperature control switch 2 in this embodiment can be any one of a temperature control switch 2 or a temperature control switch 2 composed of a temperature sensor and a thermostat, or can be other existing conventional temperature control switches 2, which is not specifically limited in this embodiment.

[0021] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A steam trap antifreeze system with self-power supply and self-antifreeze in a steam pipe network, characterized by: It comprises a temperature difference power generation mechanism, a steam pipe network and an antifreeze mechanism, wherein the temperature difference power generation mechanism comprises a temperature difference power generation sheet (1) and a temperature control switch (2), and the antifreeze mechanism comprises a DC pump (4). The temperature difference power generation sheet (1) is arranged on the hot end of the steam pipe network, one end of the temperature control switch (2) is electrically connected to the power output end of the temperature difference power generation sheet (1) through a wire, and the other end is electrically connected to the DC pump (4) of the antifreeze mechanism; the heat exchange part of the antifreeze mechanism is arranged at the cold end of the steam pipe network.

2. A steam trap antifreeze system with self-power supply and self-antifreeze in a steam pipe network according to claim 1, characterized in that: The steam pipe network comprises a steam pipe (8) and a steam trap (3) arranged at the cold end of the steam pipe (8); the hot pole of the temperature difference power generation sheet (1) is arranged at the hot end of the steam pipe network; a heat sink is arranged on the cold pole of the temperature difference power generation sheet (1); and the temperature control switch (2) is fixed on the steam trap (3).

3. A steam trap antifreeze system with self-power supply and self-antifreeze in a steam pipe network according to claim 2, characterized in that: The antifreeze mechanism further comprises an antifreeze tank (6), a main heat exchanger (7) and an auxiliary heat exchanger (5); the main heat exchanger (7) is fixed on the steam pipe (8), the auxiliary heat exchanger (5) is fixed on the steam trap (3); the antifreeze tank (6), the DC pump (4), the main heat exchanger (7) and the auxiliary heat exchanger (5) are connected in series in sequence through pipelines.

4. The self-powered and self-freezing steam trap antifreeze system in a steam pipe network according to claim 1, characterized in that: The number of the thermoelectric power generation sheets (1) is plural, and the plural thermoelectric power generation sheets (1) are connected in series or in parallel to match the power and voltage of the DC pump (4).

5. The self-powered and self-freezing steam trap antifreeze system in a steam pipe network according to claim 1, characterized in that: The temperature-controlled switch (2) is a temperature-controlled switch (2), or a temperature-controlled switch (2) composed of a temperature sensor and a temperature controller.

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