Water circulation device of oil-water heat exchanger

Abstract

The water circulation device of the oil-water heat exchanger comprises the electric regulating valve, the flow meter, the pressure gauge and the pipeline pump, effectively solves the contradiction between the flow and the pressure of circulating water of the oil-water heat exchanger, reduces the pressure of the circulating water, guarantees the required flow, prolongs the service life of the heat exchanger, reduces potential safety hazards, and improves the working efficiency. And particularly, the accident that circulating water permeates into grease due to inner leakage is completely eradicated, and the heat exchanger can be widely applied to heat exchange systems of lubricating oil, hydraulic oil and transformer oil.

Description

Technical Field

[0001] The utility model belongs to the field of industrial circulating water, relates to the circulating water technology category of heat exchangers, and specifically is a water circulation device for an oil-water heat exchanger. Background Technique

[0002] The oil-water heat exchanger is placed in the circulating water path, and uses the temperature of the circulating water to control the temperature of lubricating oil, hydraulic oil, and transformer oil. When the oil temperature is high, it is cooled by the circulating water. When the lubricating oil temperature is too low before the equipment starts, it absorbs heat from the circulating water to quickly increase the temperature of the lubricating oil. In the prior art, to improve the heat exchange performance, it is necessary to increase the flow rate of the circulating water. Increasing the flow rate of the circulating water requires increasing the circulating water pressure. Especially in some areas, the circulating water has certain corrosiveness, and in some environments where the circulating water of other equipment adopts the main pipe system, the pressure of the circulating water main pipe is generally relatively high. After the circulating water pressure increases, it is easy to cause damage to the heat exchanger and reduce the service life of the heat exchanger. Especially when the circulating water enters the medium oil, serious consequences will occur. In the lightest case, the grease in the fuel tank will be scrapped, and in the heaviest case, the equipment will be scrapped, etc. Therefore, it is particularly important to invent a device that can not only reduce the circulating water pressure but also ensure that the absolute pressure of the circulating water entering the oil-water heat exchanger is lower than the limit value. Summary of the Invention

[0003] The purpose of the utility model is to provide a water circulation device for an oil-water heat exchanger, aiming to solve the problem of the contradiction between the flow rate and pressure of the circulating water after it enters the heat exchanger in the existing technology.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: to provide a water circulation device for an oil-water heat exchanger, which includes: an electric control valve, a flow meter, a pressure gauge, and a pipeline pump. The characteristics are as follows: the inlet of the electric control valve is installed on the circulating water branch of the oil-water heat exchanger of the water supply main pipe, its outlet is connected to the flow meter through a water pipeline, the flow meter is connected to the circulating water inlet of the oil-water heat exchanger through a water pipeline, a pressure gauge is installed on the water pipeline of the circulating water outlet of the oil-water heat exchanger, and the water pipeline of the circulating water outlet of the oil-water heat exchanger is connected to the return water main pipe through a pipeline pump.

[0005] The electric control valve, the flow meter, the pressure gauge, and the pipeline pump are connected to the controller by wires. Brief Description of the Drawings

[0006] To more clearly illustrate the embodiments of the utility model, the following will briefly introduce the drawings required to be used in the embodiments.

[0007] Figure 1 It is a structural schematic diagram of the utility model;

[0008] Wherein: 1 - water supply main pipe, 2 - water return main pipe, 3 - electric control valve, 4 - flow meter, 5 - oil-water heat exchanger, 6 - pressure gauge, 7 - pipeline pump. Specific implementation mode

[0009] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0010] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "one side", "one end", "one side", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0011] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0012] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0013] It should also be understood that the terms used in the description of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. As used in the description of the present utility model and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0014] It should be further understood that the term "and / or" used in this specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0015] Various schematic structural diagrams according to the disclosed embodiments of the present utility model are shown in the drawings. These figures are not drawn to scale, where for the purpose of clear expression, some details are enlarged and some details may be omitted. The shapes of various regions and layers shown in the figures and their relative sizes and positional relationships are only exemplary, and may actually deviate due to manufacturing tolerances or technical limitations, and those skilled in the art can design regions / layers with different shapes, sizes and relative positions according to actual needs.

[0016] Referring to the drawings, a water circulation device of an oil-water heat exchanger of the present application includes: an electric control valve 3, a flowmeter 4, a pressure gauge 6 and a pipeline pump 7, and is characterized in that: the inlet of the electric control valve 3 is installed on the circulating water branch of the oil-water heat exchanger 5 of the water supply main pipe 1, its outlet is connected to the flowmeter 4 through a water pipeline, the flowmeter 4 is connected to the circulating water inlet of the oil-water heat exchanger 5 through a water pipeline, a pressure gauge 6 is installed on the water pipeline at the circulating water outlet of the oil-water heat exchanger 5, and the water pipeline at the circulating water outlet of the oil-water heat exchanger 5 is connected to the return water main pipe 2 through the pipeline pump 7.

[0017] The electric control valve 3, the flowmeter 4, the pressure gauge 6 and the pipeline pump 7 are electrically connected to the controller.

[0018] The required circulating water flow of the oil-water heat exchanger 5 is set in advance in the controller. After the controller receives the start instruction, it starts the pipeline pump 7 and opens the electric control valve 3; the controller adjusts the given frequency of the pipeline pump 7 according to the feedback signal of the flowmeter 4 to keep the set flow stable; the controller adjusts the opening of the electric control valve 3 according to the feedback signal of the pressure gauge so that the water pressure in the outlet water pipeline is always lower than the oil pressure and is in a slightly positive pressure.

[0019] The present utility model effectively solves the contradiction between the flow and pressure of the circulating water of the oil-water heat exchanger, can ensure the required flow while reducing the circulating water pressure, improves the service life of the heat exchanger, reduces the potential safety hazards, especially eliminates the occurrence of accidents caused by internal leakage of the circulating water seeping into the grease.

Claims

1. A water circulation device for an oil-water heat exchanger, comprising: The electric regulating valve (3), a flow meter (4), a pressure gauge (6) and a pipeline pump (7) are characterized in that: the inlet of the electric regulating valve (3) is installed on the circulating water branch of the oil-water heat exchanger (5) of the water supply mother pipe (1), and the outlet is connected to the flow meter (4) through a water pipeline, the flow meter (4) is connected to the circulating water inlet of the oil-water heat exchanger (5) through a water pipeline, a pressure gauge (6) is installed on the circulating water outlet water pipeline of the oil-water heat exchanger (5), and the circulating water outlet water pipeline of the oil-water heat exchanger (5) is connected to the water supply mother pipe (2) through a pipeline pump (7).

2. The water circulation device of the oil-water heat exchanger according to claim 1, characterized in that: The electric regulating valve (3), flow meter (4), pressure gauge (6) and pipeline pump (7) are electrically connected to a controller.

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