Condensate delivery device for underground condensate tank

Abstract

The utility model discloses a condensed water delivery device for an underground condensed water tank, which relates to the technical field of condensed water delivery equipment and comprises a condensed water delivery buffer tank, a cooling coil is arranged at the bottom in the condensed water delivery buffer tank, and the bottom of the condensed water delivery buffer tank is communicated with a water inlet of a delivery pump through a connecting pipeline; the outer wall of the condensed water delivery buffer tank is communicated with a condensed water tank through a right-angle bent pipe; a water filling opening pipe is arranged at the top of the condensed water delivery buffer tank and is communicated with an outlet pipe, and the outlet pipe is arranged on a water outlet of the delivery pump. According to the utility model, the condensed water delivery buffer tank provided with the cooling coil pipe is additionally arranged at the inlet of the delivery pump and is used for cooling the delivered condensed water and providing sufficient condensed water for the inlet of the delivery pump, so that the pumping-out and cavitation phenomena of the delivery pump are avoided, and the service life of the delivery pump is effectively protected.

Description

Technical Field

[0001] The utility model relates to the technical field of condensate water delivery equipment, in particular to a condensate water delivery device for an underground condensate water tank. Background Art

[0002] Steam's thermal energy consists of sensible heat and latent heat. Typically, steam-using equipment utilizes only the latent heat and a small amount of sensible heat of steam. After releasing the latent heat and a small amount of sensible heat, the steam is converted into high-temperature condensate. Condensate is saturated, high-temperature softened water, and its thermal energy value accounts for approximately 25% of the steam's thermal energy value. Condensate is also clean distilled water, suitable for reuse as boiler feed water. Therefore, it is essential to implement an effective recovery system to maximize the recovery of the system's thermal energy and softened water. This not only saves energy and reduces consumption, but also eliminates the pollution to the plant environment caused by the emission of secondary flash steam, which is of great significance both economically and socially.

[0003] At present, many condensate collection tanks are underground collection tanks. When using a centrifugal pump to collect condensate, due to the high temperature of the condensate and the condensate tank being underground, problems such as centrifugal pump evacuation or cavitation often occur. Utility Model Content

[0004] The purpose of the utility model is to provide a condensate delivery device for an underground condensate tank, so as to solve the problem mentioned in the background technology that when using a centrifugal pump to collect condensate, the centrifugal pump is often emptied or cavitation occurs due to the high temperature of the condensate and the underground condensate tank.

[0005] The utility model adopts the following technical solutions:

[0006] The utility model discloses an underground condensate tank condensate delivery device, comprising: a condensate delivery buffer tank, a cooling coil is provided at the bottom of the condensate delivery buffer tank, and the bottom of the condensate delivery buffer tank is connected to the water inlet of the delivery pump through a connecting pipe;

[0007] The outer wall of the condensate delivery buffer tank is connected to the condensate tank through a right-angle elbow;

[0008] A water filling pipe is provided on the top of the condensate delivery buffer tank, the water filling pipe is connected to the outlet pipe, the outlet pipe is provided on the water outlet of the delivery pump, and the delivery pump is connected to the motor.

[0009] Furthermore, the cooling coil includes a circulating water inlet and a circulating water outlet, and the circulating water inlet and the circulating water outlet are connected to the factory circulating water main line.

[0010] Furthermore, a glass tube level gauge is provided on the outer wall of the condensate water delivery buffer tank, and a level gauge valve is provided on the pipeline connecting the condensate water delivery buffer tank and the glass tube level gauge.

[0011] Furthermore, a water inlet valve is provided on the connecting pipe.

[0012] Furthermore, the water inlet pipe is provided with a water inlet pipe valve and a water inlet pipe drain, and the water inlet pipe drain is located on the water inlet pipe between the water inlet pipe valve and the condensate delivery buffer tank.

[0013] Furthermore, the right-angle elbow extends to the bottom of the condensate tank.

[0014] Compared with the prior art, the beneficial technical effects of the present invention are:

[0015] The utility model adds a condensate delivery buffer tank with a cooling coil at the inlet of the delivery pump to cool the delivered condensate and provide a sufficient amount of condensate to the inlet of the delivery pump, thereby ensuring that the delivery pump will not be evacuated or cavitated, and effectively protecting the service life of the delivery pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is the main structural diagram of the underground condensate tank condensate delivery device of the utility model;

[0018] Figure 2 This is a structural diagram of the cooling coil of the present utility model.

[0019] Explanation of the accompanying symbols: 1. Condensate delivery buffer tank; 2. Cooling coil; 2-1. Circulating water inlet; 2-1. Circulating water outlet; 3. Connecting pipe; 4. Delivery pump; 4-1. Outlet pipe; 5. Right-angle elbow; 6. Condensate tank; 7. Water inlet pipe; 8. Glass tube level gauge; 9. Water inlet valve; 10. Water inlet pipe valve; 11. Liquid level gauge valve; 12. Motor; 13. Water inlet pipe guide. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0021] like Figure 1As shown, this embodiment discloses an underground condensate tank condensate delivery device, including: a condensate delivery buffer tank 1, a cooling coil 2 is provided at the bottom of the condensate delivery buffer tank 1, and the bottom of the condensate delivery buffer tank 1 is connected to the water inlet of the delivery pump 4 through a connecting pipe 3, and a water inlet valve 9 is provided on the connecting pipe 3.

[0022] The outer wall of the condensate delivery buffer tank 1 is connected to the condensate tank 6 through a right-angle elbow 5, which extends to the bottom of the condensate tank 6 to ensure that the delivery buffer tank 1 will not be evacuated due to fluctuations in the liquid level in the condensate tank 6.

[0023] A water inlet pipe 7 is provided at the top of the condensate delivery buffer tank 1. This pipe is equipped with a valve 10 and a drainpipe 13. Drainpipe 13 is located on the pipe 7 between the valve 10 and the condensate delivery buffer tank 1. The pipe 7 is connected to an outlet pipe 4-1, which is located at the outlet of a delivery pump 4. The delivery pump 4 is connected to a motor 12.

[0024] A glass tube level gauge 8 is provided on the outer wall of the condensate delivery buffer tank 1, which can monitor the liquid level of the condensate delivery buffer tank 1 at any time. A level gauge valve 11 is provided on the pipeline connecting the condensate delivery buffer tank 1 and the glass tube level gauge 8.

[0025] like Figure 2 As shown, cooling coil 2 includes a circulating water inlet 2-1 and a circulating water outlet 2-2. These are connected to the plant's circulating water supply and return pipes, respectively. Cooling coil 2 cools and condenses the condensate within condensate buffer tank 1.

[0026] In this embodiment, the cooling coil 2 is arranged above the connecting pipe 3 and is welded and fixed to the condensate delivery buffer tank 1 .

[0027] The action process of this utility model is as follows:

[0028] First, place the device on a flat surface and bolt it to the ground. Connect the condensate delivery buffer tank 1 to the condensate tank 6 through the right-angle elbow 5, and connect the water inlet of the delivery pump 4 to the condensate delivery buffer tank 1 through the connecting pipe 3. Then install the glass tube level gauge 8 on the condensate delivery buffer tank 1. For the first use, close the water inlet valve 10, open the water inlet pipe guide 13, connect the external water pipe to the water inlet pipe guide 13 and inject water to fill the condensate delivery buffer tank 1. After filling, close the water inlet pipe guide 13, open the water inlet valve 9 on the connecting pipe 3 to fill the pump, and then connect the cooling coil 2 to the plant circulating water pipeline to ensure that the circulating water is in normal use. Start the delivery pump 4 and observe whether it is normal. Observe whether the liquid level of the condensate delivery buffer tank 1 is normal. If there is no fluctuation in the liquid level, it means that the condensate delivery buffer tank 1 is well sealed. When the liquid level in the condensate tank 6 is low, the water filling valve 10 can be opened to put the device into self-circulation mode. When the liquid level in the condensate tank 6 is high, the water filling valve 10 only needs to be closed. This device mainly solves the problem of poor flow of the external pump 4 due to high condensate temperature and damage to the pump body due to high pump temperature. In addition, the condensate contains some steam at high temperature, which is very likely to cause cavitation in the centrifugal pump. This device effectively solves this problem.

[0029] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements to the technical solutions of the present invention made by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A device for delivering condensate from an underground condensate tank, characterized by: include: A condensate delivery buffer tank (1), wherein a cooling coil (2) is provided at the bottom of the condensate delivery buffer tank (1), and the bottom of the condensate delivery buffer tank (1) is connected to the water inlet of a delivery pump (4) via a connecting pipe (3); The outer wall of the condensate delivery buffer tank (1) is connected to the condensate tank (6) via a right-angle elbow (5); A water inlet pipe (7) is provided on the top of the condensate delivery buffer tank (1), the water inlet pipe (7) is connected to the outlet pipe (4-1), the outlet pipe (4-1) is provided on the water outlet of the delivery pump (4), and the delivery pump (4) is connected to the motor (12).

2. The underground condensate tank condensate delivery device according to claim 1, characterized in that: The cooling coil (2) comprises a circulating water inlet (2-1) and a circulating water outlet (2-2), and the circulating water inlet (2-1) and the circulating water outlet (2-2) are connected to the main circulating water line of the plant area.

3. The underground condensate tank condensate delivery device according to claim 1, characterized in that: A glass tube level gauge (8) is provided on the outer wall of the condensate water delivery buffer tank (1), and a level gauge valve (11) is provided on the pipeline connecting the condensate water delivery buffer tank (1) and the glass tube level gauge (8).

4. The underground condensate tank condensate delivery device according to claim 1, characterized in that: The connecting pipe (3) is provided with a water inlet valve (9).

5. The underground condensate tank condensate delivery device according to claim 1, characterized in that: The water inlet pipe (7) is provided with a water inlet pipe valve (10) and a water inlet pipe drain (13), and the water inlet pipe drain (13) is located on the water inlet pipe (7) between the water inlet pipe valve (10) and the condensate outgoing buffer tank (1).

6. The underground condensate tank condensate delivery device according to claim 1, characterized in that: The right-angle elbow (5) extends to the bottom of the condensation water tank (6).

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