Expansion tank with heat exchange mechanism and high and low temperature control system

Abstract

The utility model discloses an expansion tank with a heat exchange mechanism and a high and low temperature control system, the expansion tank comprises a shell with a built-in cavity, the heat exchange mechanism is arranged in the cavity of the shell, the structure of the expansion tank is improved, the heat exchange mechanism is arranged in the expansion tank, and the heat exchange mechanism can be selected from the market according to requirements. A proper temperature is maintained in the expansion tank through the heat exchange mechanism, the fluctuation range of the temperature is small, and the expansion tank is not easily influenced by the outside so as to conveniently adapt to high and low temperature working conditions, and the stability is improved; the control system comprising the expansion tank can realize the functions of automatic liquid supplement, automatic pressure relief, automatic exhaust and the like of the heat-conducting medium, realizes the stability of the internal temperature of the expansion tank, and improves the adaptability to high-temperature working conditions and low-temperature working conditions.

Description

TECHNICAL FIELD

[0001] The utility model relates to expansion tank device technical field, concretely relates to expansion tank with heat exchange mechanism and high low temperature control system. BACKGROUND

[0002] The ordinary expansion tank is a steel plate welded container, which is usually provided with an expansion pipe for absorbing backwater, an overflow pipe for discharging excess water, a liquid level pipe for supervising the liquid level in the tank, a circulating pipe for circulating water, and a water replenishing valve for replenishing water.

[0003] When the expansion tank is used in a closed water circulation system, it mainly balances the water quantity and pressure, avoiding frequent activation of the safety valve and frequent water replenishment of the automatic water replenishing valve. However, in different refrigeration and heating temperature control systems, the conventional expansion tank has a large temperature fluctuation range, which does not match the low temperature or high temperature working condition well, thereby affecting the flow of the heat conducting medium, the service life, and the operation of the equipment. For example, if the expansion tank is in a high temperature environment for a long time, the heat conducting medium in the expansion tank is prone to oxidation and deterioration due to long-term exposure to high temperature environment, which needs to be improved. SUMMARY

[0004] To solve at least one of the above technical defects, the utility model provides the following technical scheme:

[0005] The application discloses an expansion tank with a heat exchange mechanism, which comprises a shell with an internal cavity, an inlet is arranged on the top of the shell and communicates with the cavity, a discharge type check valve and a liquid return port are arranged on the bottom of the shell and communicate with the cavity, a heat exchange mechanism is arranged in the cavity of the shell, and the inlet pipeline and the outlet pipeline of the heat exchange mechanism are outside the shell.

[0006] In this scheme, the structure of the expansion tank is improved, the heat exchange mechanism is arranged in the expansion tank, the heat exchange mechanism can be selected from the market according to the requirements, the temperature in the expansion tank is maintained at a suitable temperature through the heat exchange mechanism, the temperature fluctuation range is small, and the expansion tank is not easily affected by the external environment, so that the high and low temperature working conditions can be adapted, and the stability is improved.

[0007] Further, the heat exchange mechanism is a coil heat exchanger, which is convenient to install.

[0008] Further, the heat exchange mechanism is arranged in the lower part of the cavity of the shell, according to the conventional design habit, the check valve and the like are arranged in the lower part, so that the discharged liquid or medium is at a suitable temperature.

[0009] Further, the inlet pipeline and the outlet pipeline of the heat exchange mechanism respectively extend from the holes formed in the lower part of the shell and the cavity wall, which is convenient for docking with external equipment.

[0010] Further, an exhaust valve is arranged at the top of the shell and communicates with the cavity, and the exhaust valve is arranged to facilitate the connection with a reaction kettle.

[0011] Further, a liquid level meter is arranged on the shell to measure the liquid level in the cavity.

[0012] Further, a liquid inlet is arranged at the top surface of the shell, and an exhaust valve is arranged at the side surface of the shell, so that the subsequent operation is facilitated.

[0013] Further, the shell is a rectangular box, and the shape of the shell is changed to better meet the specified processing size.

[0014] The second aspect of the application discloses a high and low temperature control system, which comprises the expansion tank, the heat exchange assembly, the circulating pump and the heating mechanism.

[0015] In use, the heat conducting medium is injected into the cavity of the expansion tank through the liquid inlet, flows through the circulating pump through the one-way valve, is pressurized by the circulating pump, and then sequentially passes through the heat exchange assembly and the heating mechanism, so that the temperature can be better controlled, and the functions of automatic liquid supplement, automatic pressure relief and exhaust can be realized.

[0016] Further, the heat exchange assembly comprises a plate heat exchanger and a fin heat exchanger connected in series, a compressor and an oil separator are arranged between the plate heat exchanger and the fin heat exchanger, one outlet of the plate heat exchanger is connected with the inlet of the compressor, and the other outlet of the plate heat exchanger is connected with the inlet of the heating mechanism, the outlet of the compressor is connected with the oil separator, the outlet of the oil separator is connected with the inlet of the fin heat exchanger, and the outlet of the fin heat exchanger is connected with one inlet of the plate heat exchanger, so that the plate heat exchanger and the fin heat exchanger are matched to better adjust the temperature.

[0017] Further, the heating mechanism is an electric heater, which is convenient to use and accurate in temperature rise.

[0018] Further, the reaction kettle is connected with the outlet of the heating mechanism, and the outlet of the reaction kettle is connected with the exhaust valve and the circulating pump in the expansion tank, so that the heat conducting medium flowing out of the heating mechanism flows into the reaction kettle, the liquid level in the reaction kettle rises with the continuous injection of the heat conducting medium, and the air in the reaction kettle enters the expansion tank through the exhaust valve to realize automatic exhaust.

[0019] Compared with the prior art, the application has the following beneficial effects:

[0020] 1. The utility model discloses an improved structure of expansion tank, and the built-in heat exchange mechanism makes the heat conduction medium in the cavity at a suitable temperature to better adapt to high and low temperature working conditions and improve the stability of operation.

[0021] 2. The high and low temperature control system realizes automatic liquid supplement, automatic pressure relief and automatic exhaust of the heat conduction medium under the cooperation of functional mechanisms, and realizes the stability of the internal temperature of the expansion tank and improves the adaptability to high and low temperature working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 is the structural diagram of the expansion tank;

[0024] Figure 2 is the installation structure diagram of the heat exchange mechanism;

[0025] Figure 3 is the flow process diagram of the high and low temperature control system;

[0026] Among them, the reference signs are:

[0027] 1, expansion tank; 2, circulating pump; 3, plate heat exchanger; 4, fin heat exchanger; 5, compressor; 6, oil separator; 7, drying filter; 8, electric heater; 9, liquid level meter; 10, reaction kettle; 11, pipeline two; 100, shell; 101, liquid inlet; 102, exhaust valve; 103, check valve; 104, liquid return port; 105, mounting hole; 106, pipeline one; 107, exhaust valve; 110, heat exchange mechanism; 111, inlet pipeline; 112, outlet pipeline. DETAILED DESCRIPTION

[0028] The utility model will be further described in combination with the drawings and specific embodiments.

[0029] Embodiment 1

[0030] As shown in the drawing, Figure 3 , a high and low temperature control system in this example includes an expansion tank 1 with a heat exchange mechanism, and the structure of the expansion tank 1 is as shown in Figure 1 , Figure 2 , specifically includes a shell 100 with a built-in cavity, and the top of the shell 100 is formed with a liquid inlet 101 communicating with the cavity, such as filling the heat conduction medium through the liquid inlet. As for the position of the liquid inlet, it is formed at the top surface of the shell 100.

[0031] A drain type one-way valve 103 is installed at the bottom of the shell 100 and communicates with the cavity, and a return port 104 is formed at the bottom of the shell 100, so that the expanded heat-conducting medium flows into the cavity through the return port 104. For the positions of the one-way valve and the return port, the one-way valve 103 is installed at the side of the bottom of the shell 100, and the return port 104 is formed.

[0032] In this example, a heat exchange mechanism 110 is installed in the cavity of the shell 100. The heat exchange mechanism is a common coil heat exchanger. The inlet pipe 111 and the outlet pipe 112 of the coil heat exchanger are outside the shell 100. The coil heat exchanger is arranged at the lower part of the cavity of the shell 100. Installation holes 105 are formed in the cavity walls on the left and right sides of the coil heat exchanger. The inlet pipe 111 and the outlet pipe 112 of the coil heat exchanger respectively extend from the installation holes 105 to facilitate external connection.

[0033] In this example, an exhaust valve 102 is installed at the top of the shell 100 and communicates with the cavity. The exhaust valve 102 is a common stop valve. For the position, the exhaust valve 102 is preferably installed at the side of the top of the shell 100. In addition, a liquid level meter 9 for measuring the liquid level in the cavity can also be installed on the shell 100 to facilitate detection of the liquid level in the cavity.

[0034] For the shape of the shell, the shell 100 is preferably in the shape of a rectangular box. Compared with a cylindrical shape, the rectangular box shape can better meet the specified processing size of the customer.

[0035] In use, the heat exchange mechanism maintains a suitable temperature in the expansion tank. The temperature fluctuation range is small, which facilitates adaptation to high and low temperature working conditions and improves stability.

[0036] As shown in Figure 3 In this example, the high and low temperature control system further includes a heat exchange assembly, a circulating pump 2, and a heating mechanism. The outlet of the one-way valve 103 in the expansion tank 1 is connected to the inlet of the circulating pump 2. A pipe 106 is installed at the return port 104 of the expansion tank 1. The pipe 106 communicates with a pipe 11 of the one-way valve 103 and the circulating pump 2, and the pipe 106 is at least partially higher than the pipe 11. For example, the pipe 106 is in the shape of U at the end and is higher than the pipe 11. The outlet of the circulating pump 2 is connected to the inlet of the heat exchange assembly. The outlet of the heat exchange assembly is connected to the inlet of the heating mechanism. In use, the heat-conducting medium in the cavity of the expansion tank flows through the circulating pump via the one-way valve, and is pressurized by the circulating pump to sequentially pass through the heat exchange assembly and the heating mechanism.

[0037] For the heat exchange assembly, a corresponding heat exchange mechanism can be selected from the market according to the needs, such as a plate type or a fin type. Preferably, as shown in Figure 3As shown, the plate heat exchanger 3 and the fin heat exchanger 4 are connected, the heating mechanism is the common electric heater 8, the compressor 5, the oil separator 6 are installed between the plate heat exchanger 3 and the fin heat exchanger 4, one outlet of the plate heat exchanger 3 is connected with the inlet of the compressor 5, the other outlet is connected with the inlet of the electric heater 8, the outlet of the compressor 5 is connected with the oil separator 6, the outlet of the oil separator 6 is connected with the inlet of the fin heat exchanger 4, the outlet of the fin heat exchanger 4 is connected with one inlet of the plate heat exchanger 3, the heat conducting medium pressurized by the circulating pump 2 first enters the plate heat exchanger, and then enters the fin heat exchanger. A drying filter can also be added at the pipeline through which the fin heat exchanger returns to the plate heat exchanger.

[0038] In use, the outlet of the electric heater is connected with the inlet of the bottom of the reaction kettle through the medium inlet pipeline, and the top outlet of the reaction kettle is connected with the exhaust valve and the circulating pump through the medium inlet pipeline.

[0039] In use, the circulating pump is connected with the inlet of the bottom of the reaction kettle through the medium inlet pipeline, and the top outlet of the reaction kettle is connected with the exhaust valve and the circulating pump through the medium inlet pipeline.

[0040] In use, the circulating pump is connected with the inlet of the bottom of the reaction kettle through the medium inlet pipeline, and the top outlet of the reaction kettle is connected with the exhaust valve and the circulating pump through the medium inlet pipeline.

[0041] In use, the circulating pump is connected with the inlet of the bottom of the reaction kettle through the medium inlet pipeline, and the top outlet of the reaction kettle is connected with the exhaust valve and the circulating pump through the medium inlet pipeline.

[0042] The above are only preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments, and any technical scheme falling within the concept of the present application belongs to the protection scope of the present application. It should be noted that, for ordinary skilled persons in the art, some improvements and refinements without departing from the principles of the present application are also considered to be within the protection scope of the present application.

Claims

1. An expansion tank with a heat exchange mechanism, comprising a shell (100) with a built-in cavity, a liquid inlet (101) communicating with the cavity being provided at the top of the shell (100), and a liquid discharge type one-way valve (103) and a liquid return port (104) communicating with the cavity being provided at the bottom of the shell (100), characterized in that: A heat exchange mechanism (110) is provided in the cavity of the shell (100), and an inlet pipe (111) and an outlet pipe (112) in the heat exchange mechanism (110) are both located outside the shell (100).

2. The expansion tank with a heat exchange mechanism according to claim 1, characterized in that: The heat exchange mechanism (110) is a coil heat exchanger.

3. The expansion tank with a heat exchange mechanism according to claim 1, characterized in that: The heat exchange mechanism (110) is located in the lower part of the housing (100).

4. The expansion tank with a heat exchange mechanism according to claim 1, characterized in that: The inlet pipe (111) and the outlet pipe (112) of the heat exchange mechanism (110) extend out from holes formed at the lower portion of the shell (100) relative to the cavity wall.

5. The expansion tank with a heat exchange mechanism according to claim 1, characterized in that: An exhaust valve (102) communicating with the cavity is provided at the top of the housing (100); Alternatively, a liquid level meter (9) for measuring the liquid level in the cavity is provided on the housing (100).

6. The expansion tank with a heat exchange mechanism according to claim 5, characterized in that: A liquid inlet (101) is provided on the top surface of the shell (100), and an exhaust valve (102) is provided on the side surface of the shell (100).

7. The expansion tank with a heat exchange mechanism according to any one of claims 1 to 6, characterized in that: The housing (100) is in the shape of a rectangular box.

8. A high and low temperature control system, characterized in that: The invention comprises an expansion tank (1), a heat exchange component, a circulation pump (2), and a heating mechanism according to any one of claims 1 to 7, wherein the outlet of the one-way valve (103) in the expansion tank (1) is connected to the inlet of the circulation pump (2), and the pipe 1 (106) connected at the liquid return port (104) is connected to the pipe 2 (11) connecting the one-way valve (103) and the circulation pump (2), wherein the pipe 1 (106) is at least partially higher than the pipe 2 (11), the outlet of the circulation pump (2) is connected to the inlet of the heat exchange component, and the outlet of the heat exchange component is connected to the inlet of the heating mechanism.

9. A high and low temperature control system according to claim 8, characterized in that: The heat exchange assembly comprises a plate heat exchanger (3) and a fin heat exchanger (4) connected to each other; a compressor (5) and an oil separator (6) are arranged between the plate heat exchanger (3) and the fin heat exchanger (4); one outlet of the plate heat exchanger (3) is connected to the inlet of the compressor (5) and the other outlet is connected to the inlet of the heating mechanism; the outlet of the compressor (5) is connected to the oil separator (6); the outlet of the oil separator (6) is connected to the inlet of the fin heat exchanger (4); and the outlet of the fin heat exchanger (4) is connected to one inlet of the plate heat exchanger (3); Alternatively, the heating mechanism is an electric heater (8).

10. The high and low temperature control system according to claim 8, characterized in that: It also includes a reactor (10), the inlet of the reactor (10) is connected to the outlet of the heating mechanism, and the outlet of the reactor (10) is connected to the exhaust valve (102) and the circulation pump (2) in the expansion tank (1).

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