Condensed water recovery device

Abstract

The utility model relates to the technical field of heat energy recovery devices, in particular to a condensed water recovery device. The condensed water recovery device comprises a collecting device and a pressure adjusting device installed on the collecting device, and the collecting device is used for storing condensed water and communicated with a water inlet pipeline and a water outlet pipeline. The pressure adjusting equipment can pressurize and depressurize the collecting equipment; when the collecting equipment collects condensed water through the water inlet pipeline, the pressure adjusting equipment can relieve pressure of the collecting equipment, so that the condensed water can smoothly flow into the collecting equipment; when the condensed water in the collecting equipment needs to be discharged through the drainage pipeline, the pressure adjusting equipment can inflate and pressurize the collecting equipment, so that the pressure difference is used as driving force to discharge the condensed water, compared with a water pump discharge mode, the collecting and discharging requirements of the small-flow condensed water can be met, the occupied space is small, and the cost is low. Explosion-proof requirements do not need to be considered, and a choice is provided for occasions with limited space and explosion-proof requirements.

Description

Technical Field

[0001] The present application relates to the technical field of heat recovery devices, and in particular to a condensate recovery device. Background Art

[0002] Condensate recovery devices are widely used in steam heating systems, and play a huge role in water conservation and thermal energy utilization. Existing condensate recovery devices are usually equipped with condensate tanks and water pumps to collect steam condensate using condensate tanks, and after collecting a certain amount of condensate, use water pumps to discharge condensate to boiler water tanks for use as boiler water. However, the water pump usually has a large discharge volume and occupies a large space. In addition, the water pump generally uses an electric motor as a power source. When installed in places with explosion-proof requirements, special insulation protection is required, but the explosion-proof effect is not ideal. Utility Model Content

[0003] The utility model aims to provide a condensate recovery device, which can be used in situations where there are explosion-proof requirements, the condensate flow is relatively small, and the location is relatively remote or the space is limited.

[0004] The utility model provides a condensate recovery device, including a collection device and a pressure regulating device;

[0005] The collecting device is used to store condensed water, and is connected to a water inlet pipeline and a drainage pipeline; the pressure regulating device is connected to the collecting device, and is used to pressurize and release the pressure of the collecting device;

[0006] The collecting device can collect the condensed water through the water inlet pipeline when in a depressurized state, and can discharge the condensed water through the drainage pipeline when in a pressurized state.

[0007] Further, the pressure regulating device includes a first gas circuit and a first stop valve;

[0008] One end of the first gas circuit is connected to the collecting device, and the other end of the first gas circuit is used to be connected to the compressed air device. The first stop valve is arranged on the first gas circuit to control the opening and closing of the first gas circuit.

[0009] Further, the pressure regulating device includes a second gas circuit and a second stop valve;

[0010] One end of the second gas path is connected to the collecting device, and the other end of the second gas path is connected to the external environment. The second stop valve is arranged on the second gas path to control the on and off of the second gas path.

[0011] Furthermore, a drain valve is provided on the water inlet pipeline, and the drain valve is used to control the on-off of the water inlet pipeline.

[0012] Furthermore, a first check valve is provided on the water inlet pipeline, and the steam trap and the first check valve are sequentially arranged at intervals along the water flow direction in the water inlet pipeline.

[0013] Furthermore, a second check valve is provided on the drainage pipeline.

[0014] Furthermore, a liquid level meter is installed on the collecting device to detect the liquid level height in the collecting device.

[0015] Furthermore, the liquid level gauge is a float flap liquid level gauge.

[0016] Further, the first stop valve and the second stop valve are both pneumatic valves;

[0017] The first stop valve and the second stop valve are both communicatively connected to the liquid level meter.

[0018] Further, the collecting device comprises a first pipeline, a second pipeline and a third pipeline arranged side by side and spaced apart;

[0019] One ends of the first pipeline, the second pipeline and the third pipeline are connected through a set of pipe fittings, and the other ends of the first pipeline, the second pipeline and the third pipeline are connected through another set of pipe fittings;

[0020] The first pipe is provided with a first interface for installing the liquid level meter, the second pipe is provided with a second interface for installing the water inlet pipeline, and the third pipe is provided with a third interface for installing the pressure regulating device.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] The condensate recovery device provided by the utility model comprises a collecting device and a pressure regulating device, wherein the collecting device is formed with an internal cavity for storing condensate, and the collecting device is connected with a water inlet pipeline and a drainage pipeline. When the condensate recovery device is used in a steam heating system, the collecting device is connected with a heat-using device of the steam heating system through the water inlet pipeline, so that condensate formed at the heat-using device can flow into the collecting device through the water inlet pipeline. At the same time, the collecting device is connected with a boiler water storage tank of the steam heating system through the drainage pipeline, so that the condensate stored in the collecting device can be discharged to the boiler water storage tank through the drainage pipeline to be used as boiler water.

[0023] The pressure regulating device is installed on the collecting device and is connected with the collecting device. The collecting device can be pressurized and relieved through the pressure regulating device. When the collecting device collects condensate, that is, when the condensate from the heat equipment flows into the collecting device through the water inlet pipe, the collecting device can be relieved of pressure through the pressure regulating device, such as unloading the collecting device to normal pressure, so that the condensate can flow smoothly into the collecting device. When the condensate in the collecting device needs to be discharged to the boiler water storage tank through the drainage pipe, the collecting device can be inflated and pressurized through the pressure regulating device, so that the pressure difference is used as the driving force to make the condensate flow out of the collecting device smoothly and be discharged to the boiler water storage tank. Compared with using a water pump to discharge the condensate in the collecting device, it can not only meet the collection and discharge requirements of small flow condensate, but also occupy a small space and there is no need to consider explosion-proof requirements. It provides an option for occasions with limited space and explosion-proof requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 A schematic diagram of the structure of a condensate recovery device provided in an embodiment of the utility model;

[0026] Figure 2 A schematic diagram of the structure of the water inlet pipeline of the condensate recovery device provided in the embodiment of the utility model;

[0027] Figure 3 A schematic diagram of the structure of a pressure regulating device for a condensate recovery device provided in an embodiment of the utility model;

[0028] Figure 4 A schematic diagram of the structure of a collection device for a condensate recovery device provided in an embodiment of the utility model.

[0029] Reference numerals:

[0030] 1-collecting equipment, 11-first pipeline, 12-second pipeline, 13-third pipeline, 14-first interface, 15-second interface, 16-third interface, 2-water inlet pipeline, 21-drain valve, 22-first check valve, 3-drain pipeline, 31-second check valve, 4-pressure regulating equipment, 41-first gas circuit, 42-second gas circuit, 43-first stop valve, 44-second stop valve, 45-installation main pipe, 5-liquid level meter. DETAILED DESCRIPTION

[0031] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0032] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0033] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Refer to the following Figures 1 to 4 The condensate recovery device according to some embodiments of the present application is described.

[0037] The present application provides a condensate recovery device, such as Figure 1As shown, the condensate recovery device includes a collecting device 1 and a pressure regulating device 4, wherein the collecting device 1 is formed with an internal cavity for storing condensate, and the collecting device 1 is connected with a water inlet pipe 2 and a drainage pipe 3. When the condensate recovery device is used in a steam heating system, the collecting device 1 is connected with a heat-using device of the steam heating system through the water inlet pipe 2, so that the condensate formed at the heat-using device can flow into the collecting device 1 through the water inlet pipe 2, so that the condensate is collected by the collecting device 1; at the same time, the collecting device 1 is connected with a boiler water storage tank of the steam heating system through the drainage pipe 3, so that the condensate stored in the collecting device 1 can be discharged to the boiler water storage tank through the drainage pipe 3 to be used as boiler water.

[0038] The pressure regulating device 4 is installed on the collecting device 1 and is connected with the collecting device 1. The collecting device 1 can be pressurized and depressurized through the pressure regulating device 4; when the collecting device 1 collects condensate, that is, when the condensate from the heat device flows into the collecting device 1 through the water inlet pipe 2, the collecting device 1 can be depressurized through the pressure regulating device 4, such as unloading the collecting device 1 to normal pressure, so that the condensate can smoothly flow into the collecting device 1; when the condensate in the collecting device 1 needs to be discharged to the boiler water storage tank through the drainage pipe 3, the collecting device 1 can be inflated and pressurized through the pressure regulating device 4, so that the pressure difference is used as a driving force to make the condensate flow out of the collecting device 1 smoothly and be discharged to the boiler water storage tank. Compared with using a water pump to discharge the condensate in the collecting device 1, it can not only meet the collection and discharge requirements of small flow condensate, but also occupy a small space and there is no need to consider explosion-proof requirements, which provides an option for occasions with limited space and explosion-proof requirements.

[0039] In one embodiment of the present application, preferably, Figure 1 and Figure 3 As shown, the pressure regulating device 4 includes a first gas circuit 41 and a first stop valve 43. One end of the first gas circuit 41 is connected to the collecting device 1, and the other end of the first gas circuit 41 is used to be connected to the compressed air device. The first stop valve 43 is installed on the first gas circuit 41 to control the on-off of the first gas circuit 41 through the first stop valve 43, thereby controlling the on-off between the compressed air device and the collecting device 1.

[0040] When the first stop valve 43 is closed, the first air circuit 41 is cut off, and the connection between the compressed air device and the collecting device 1 is also cut off, so that the compressed air device cannot deliver compressed air to the collecting device 1; when the first stop valve 43 is opened, the first air circuit 41 is in a conducting state, and the compressed air device and the collecting device 1 are connected through the first air circuit 41, and the compressed air device can deliver compressed air to the collecting device 1 through the first air circuit 41 to pressurize the collecting device 1.

[0041] In this embodiment, preferably, Figure 1 and Figure 3 As shown, the pressure regulating device 4 includes a second gas circuit 42 and a second stop valve 44. One end of the second gas circuit 42 is connected to the collecting device 1, and the other end of the second gas circuit 42 is open to be connected to the external environment. The second stop valve 44 is installed on the second gas circuit 42 to control the on-off of the second gas circuit 42 through the second stop valve 44. When the second stop valve 44 is opened, the second gas circuit 42 is in a conducting state, and the collecting device 1 is connected to the external environment through the second gas circuit 42, so that the pressure in the collecting device 1 is released to the same normal pressure as the external environment.

[0042] In actual operation, when the condensate needs to be collected by the collecting device 1, the first stop valve 43 is closed so that the compressed air device cannot deliver compressed air to the collecting device 1, and the second stop valve 44 is opened at the same time to connect the collecting device 1 with the external environment, so that the collecting device 1 is discharged to normal pressure, so that the condensate from the heat-using device of the steam heating system can smoothly flow into the collecting device 1. When the collecting device 1 needs to discharge the condensate, the second stop valve 44 is closed to cut off the connection between the collecting device 1 and the external environment, and the first stop valve 43 is opened at the same time to deliver compressed air to the collecting device 1 through the compressed air device to pressurize the collecting device 1, so that the condensate in the collecting device 1 is smoothly discharged using the compressed air as a power.

[0043] In this embodiment, preferably, Figure 1 and Figure 3 As shown, the pressure regulating device 4 is provided with an installation main pipe 45, one end of which is connected to the collecting device 1, and the other end of the installation main pipe 45 is connected to the first gas path 41 and the second gas path 42 through a three-way joint.

[0044] In one embodiment of the present application, preferably, Figure 1 and Figure 2 As shown, a drain valve 21 is provided on the water inlet pipeline 2, and the drain valve 21 is used to control the on-off of the water inlet pipeline 2. When the drain valve 21 is opened, condensate from the thermal equipment of the steam heating system can flow into the collecting device 1 through the inlet pipeline. When the drain valve 21 is closed, the water inlet pipeline 2 is cut off, and the condensate from the thermal equipment of the steam heating system cannot flow into the collecting device 1 through the inlet pipeline.

[0045] In this embodiment, preferably, Figure 1 and Figure 2As shown, the water inlet pipeline 2 is also provided with a first check valve 22, and the steam trap 21 and the first check valve 22 are sequentially arranged at intervals along the flow direction of the water flow in the water inlet pipeline 2, that is, the water flow in the water inlet pipeline 2 first passes through the steam trap 21, and then passes through the first check valve 22. By arranging the first check valve 22 on the water inlet pipeline 2, the flow of water between the collection device 1 and the heat-using device can be unidirectional, that is, when the pressure of the condensed water from the heat-using device reaches the starting pressure of the first check valve 22, the condensed water can pass through the first check valve 22 on the water inlet pipeline 2 and flow into the collection device 1, and when the steam trap 21 is opened, even if the pressure in the collection device 1 increases, the condensed water in the collection device 1 cannot pass through the first check valve 22 and flow to the heat-using device, so that the first check valve 22 can effectively prevent the condensed water from the collection device 1 from flowing back to the heat-using device.

[0046] In one embodiment of the present application, preferably, Figure 1 and Figure 4 As shown, a second check valve 31 is provided on the drainage pipe 3 to make the flow of water between the collecting device 1 and the boiler water tank unidirectional, that is, when the pressure of the condensate from the collecting device 1 reaches the starting pressure of the second check valve 31, the condensate can pass through the second check valve 31 on the drainage pipe 3 and flow to the boiler water tank, and even if the pressure of the collecting device 1 is released to normal pressure, the condensate from the boiler water tank cannot flow into the collecting device 1 through the second check valve 31, thereby effectively preventing the condensate discharged from the collecting device 1 from flowing back to the collecting device 1.

[0047] In one embodiment of the present application, preferably, Figure 1 As shown, the condensate recovery device also includes a liquid level meter 5, which is installed on the collecting device 1, and the detection probe of the liquid level meter 5 extends into the collecting device 1. The liquid level height of the condensate in the collecting device 1 can be detected by the liquid level meter 5 to control the water collection and drainage of the collecting device 1 according to the liquid level height.

[0048] In actual operation, the collecting device 1 is pre-set with a high water level and a low water level. When the liquid level meter 5 detects that the liquid level of the condensed water in the collecting device 1 rises to the high water level, the collecting device 1 starts to drain. The specific operation is to close the second stop valve 44 and open the first stop valve 43 at the same time, so as to use the compressed air equipment to introduce compressed air into the collecting device 1 to pressurize the collecting device 1, so that the condensed water in the collecting device 1 is discharged to the boiler water storage tank through the drainage pipe 3 under the action of pressure. Due to the existence of the first check valve 22, the condensed water in the collecting device 1 will not flow back to the heat equipment through the water inlet pipe 2.

[0049] When the liquid level meter 5 detects that the liquid level of the condensed water in the collection device 1 drops to a low water level, the water intake of the collection device 1 starts. Specifically, the first stop valve 43 is closed to cut off the compressed air device from delivering compressed air to the collection device 1, and the second stop valve 44 is opened to discharge the pressure in the collection device 1 to normal pressure. The condensed water from the heat-using device will smoothly open the first check valve 22 and flow into the collection device 1. At the same time, since the collection device 1 is discharged to normal pressure, the second check valve 31 cannot be opened, so that the condensed water in the collection device 1 cannot be discharged through the drainage pipeline 3. Similarly, due to the existence of the second check valve 31, the condensed water discharged from the collection device 1 through the drainage pipeline 3 will not flow back to the collection device 1.

[0050] In one embodiment of the present application, preferably, the liquid level meter 5 is a vertically mounted float flap liquid level meter, which facilitates operators and maintenance personnel to visually check the liquid level in the collection device 1.

[0051] In this embodiment, preferably, both the first stop valve 43 and the second stop valve 44 are pneumatic stop valves, that is, both rely on controlling the air circuit to achieve automatic opening and closing drive.

[0052] Preferably, the first stop valve 43 and the second stop valve 44 are both communicatively connected to the liquid level meter 5, so that the opening and closing states of the first stop valve 43 and the second stop valve 44 can be automatically controlled according to the liquid level detected by the liquid level meter 5 to realize automatic water inlet and outlet of the collection device 1.

[0053] In one embodiment of the present application, preferably, Figure 4 As shown, the collecting device 1 is assembled by welding pipes and pipe fittings; specifically, the collecting device 1 includes a first pipe 11, a second pipe 12 and a third pipe 13 arranged side by side and spaced apart, the first pipe 11, the second pipe 12 and the third pipe 13 are connected at one end of the same side by a group of pipe fittings, and the first pipe 11, the second pipe 12 and the third pipe 13 are connected at the other end of the same side by another group of pipe fittings.

[0054] The collecting device 1 is installed horizontally, that is, the length directions of the first pipe 11, the second pipe 12 and the third pipe 13 are all along the horizontal direction, and the first pipe 11, the second pipe 12 and the third pipe 13 are arranged side by side and spaced apart in a direction perpendicular to their own length directions.

[0055] A first interface 14 is provided on the first pipeline 11, and the first interface 14 is located on the upper side of the first pipeline 11, and the liquid level meter 5 is installed on the first pipeline 11 through the first interface 14; a second interface 15 is provided on the second pipeline 12, and the second interface 15 is located on the upper side of the second pipeline 12, and the water inlet pipeline 2 is connected to the collecting device 1 through the second interface 15, so that the condensate from the heat-using equipment enters the collecting device 1 from the top of the collecting device 1; a third interface 16 is provided on the third pipeline 13, and the pressure regulating device 4 is connected to the collecting device 1 through the third interface 16. The pressure regulating device 4 is specifically connected to the third interface 16 through the installation main pipe 45 mentioned above, and the third interface 16 is provided on the upper side of the third pipeline 13, so that when a certain amount of condensate is stored in the collecting device 1, the pressure regulating device 4 can be connected to the gas phase space above the collecting device 1.

[0056] The drainage pipeline 3 is connected to the collecting device 1 at the lower side of the collecting device 1 , and the connection point can be located on the first pipe 11 , the second pipe 12 , the third pipe 13 or any of the connecting pipes between the three.

[0057] The collecting device 1 formed by welding pipes and pipe fittings is not only simple in structure and low in cost, but also more suitable for condensate recovery devices with small volume and small flow.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A condensate recovery device, characterized in that: Includes collection equipment and pressure regulating equipment; The collecting device is used to store condensed water, and is connected to a water inlet pipeline and a drainage pipeline; the pressure regulating device is connected to the collecting device, and is used to pressurize and release the pressure of the collecting device; The collecting device can collect the condensed water through the water inlet pipeline when in a depressurized state, and can discharge the condensed water through the drainage pipeline when in a pressurized state.

2. The condensate recovery device according to claim 1, characterized in that: The pressure regulating device comprises a first gas circuit and a first stop valve; One end of the first gas circuit is connected to the collecting device, and the other end of the first gas circuit is used to be connected to the compressed air device. The first stop valve is arranged on the first gas circuit to control the opening and closing of the first gas circuit.

3. The condensate recovery device according to claim 2, characterized in that: The pressure regulating device includes a second gas circuit and a second stop valve; One end of the second gas path is connected to the collecting device, and the other end of the second gas path is connected to the external environment. The second stop valve is arranged on the second gas path to control the on and off of the second gas path.

4. The condensate recovery device according to claim 3, characterized in that: The water inlet pipeline is provided with a drain valve, and the drain valve is used to control the on-off of the water inlet pipeline.

5. The condensate recovery device according to claim 4, characterized in that: The water inlet pipeline is provided with a first check valve, and the steam trap and the first check valve are sequentially arranged at intervals along the water flow direction in the water inlet pipeline.

6. The condensate recovery device according to claim 1, characterized in that: A second check valve is arranged on the drainage pipeline.

7. The condensate recovery device according to claim 4, characterized in that: The collecting device is provided with a liquid level meter for detecting the liquid level in the collecting device.

8. The condensate recovery device according to claim 7, characterized in that: The liquid level gauge is a float flap liquid level gauge.

9. The condensate recovery device according to claim 7, characterized in that: The first stop valve and the second stop valve are both pneumatic valves; The first stop valve and the second stop valve are both communicatively connected to the liquid level meter.

10. The condensate recovery device according to claim 7, characterized in that: The collecting device comprises a first pipeline, a second pipeline and a third pipeline arranged side by side and spaced apart; One ends of the first pipeline, the second pipeline and the third pipeline are connected through a set of pipe fittings, and the other ends of the first pipeline, the second pipeline and the third pipeline are connected through another set of pipe fittings; The first pipe is provided with a first interface for installing the liquid level meter, the second pipe is provided with a second interface for installing the water inlet pipeline, and the third pipe is provided with a third interface for installing the pressure regulating device.

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