Condensate water tank and heat supply system

Abstract

The utility model discloses a condensation water tank and a heat supply system, and relates to the technical field of heat supply, the condensation water tank comprises a water tank body and a nitrogen filling pipeline, the water tank body is provided with a containing cavity, condensation water is contained in the containing cavity, and the containing cavity forms a cavity above the liquid level of the condensation water; the nitrogen charging pipeline is provided with a gas inlet and a gas outlet, the gas inlet of the nitrogen charging pipeline is used for injecting nitrogen, and the gas outlet of the nitrogen charging pipeline is communicated with the cavity. According to the technical scheme provided by the utility model, when the water tank body is subjected to nitrogen charging and oxygen isolation, nitrogen is directly sent to the cavity, so that bubbles are not generated in condensed water in the accommodating cavity, the steam-water dissolving process is reduced, and the oxygen content is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of heat supply, especially relates to a condensate tank and heat supply system. BACKGROUND

[0002] Heat supply system plays an important role in modern urban infrastructure, especially in cold season, providing necessary heat energy for residents and industry. Condensate tank as an important part of heat supply system, its operation efficiency directly affects the stability and economy of heat supply. In the circulation process of condensate, oxygen in the air will dissolve into water, which increases the oxygen content of heat supply return water. This not only affects the heat exchange efficiency of heat supply system, but also may cause pipeline corrosion, shorten the service life of equipment.

[0003] In order to solve this problem, in recent years, many heat supply systems begin to adopt the way of nitrogen filling and oxygen isolation, which reduces the oxygen content in water by filling nitrogen in condensate tank. Although the nitrogen filling and oxygen isolation technology has good effect in theory, but in actual application, the access position of nitrogen filling port is improper, which may cause nitrogen gas to form bubbles in condensate, accelerate the dissolution of oxygen, and increase the oxygen content in water. SUMMARY

[0004] The main purpose of the utility model is to provide a condensate tank and heat supply system, which aims to at least solve the technical problem that nitrogen filling and oxygen isolation increase the oxygen content in water in the related art.

[0005] To achieve the above purpose, the condensate tank provided by the utility model comprises:

[0006] The water tank body has a containing cavity, the containing cavity has condensate water, and the containing cavity constitutes a cavity above the condensate water liquid level; and

[0007] The nitrogen filling pipeline has an air inlet and an air outlet, the air inlet of the nitrogen filling pipeline is used for nitrogen injection, and the air outlet of the nitrogen filling pipeline is communicated with the cavity.

[0008] In an embodiment, the condensate tank further comprises a water level meter, the water level meter has a first pressure taking pipe communicated with the lower end of the containing cavity, and a second pressure taking pipe communicated with the cavity.

[0009] In an embodiment, the air outlet of the nitrogen filling pipeline is communicated with the second pressure taking pipe.

[0010] In an embodiment, an electromagnetic valve is further arranged on the nitrogen filling pipeline.

[0011] In an embodiment, the water tank body has a water outlet, and the water outlet is used for connecting the inlet of a condensate pump;

[0012] The water outlet of the water tank body is provided with a pressure transmitter;

[0013] The condensate tank further comprises a control device electrically connected with the pressure transmitter and the electromagnetic valve, so as to control the electromagnetic valve according to the pressure transmitter.

[0014] In an embodiment, the condensate tank further comprises a pressure gauge for detecting the pressure of the cavity.

[0015] In an embodiment, the nitrogen charging pipeline is further provided with an electromagnetic valve.

[0016] The pressure gauge is arranged between the gas outlet and the electromagnetic valve.

[0017] In an embodiment, the nitrogen charging pipeline is provided with a nitrogen detector at the gas inlet.

[0018] The utility model also provides a heat supply system, the heat supply system includes the condensate tank of above.

[0019] In an embodiment, the heat supply system further comprises:

[0020] A heating system is provided with a water outlet communicating with the containing cavity.

[0021] A condensate pump, the inlet of the condensate pump communicates with the water outlet of the condensate tank, and

[0022] A nitrogen supply device is used to provide nitrogen to the gas inlet of the nitrogen charging pipeline.

[0023] In the technical scheme of the utility model, the condensate tank comprises a water tank body and a nitrogen charging pipeline, the water tank body has a containing cavity, the containing cavity has condensate water, and the containing cavity constitutes a cavity above the condensate water level; the nitrogen charging pipeline has a gas inlet and a gas outlet, the gas inlet of the nitrogen charging pipeline is used for injecting nitrogen, and the gas outlet of the nitrogen charging pipeline communicates with the cavity; in this way, when the water tank body is filled with nitrogen and oxygen is isolated, nitrogen is directly sent to the cavity, no bubbles are generated in the condensate water in the containing cavity, the steam-water dissolving process is reduced, and the oxygen content is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the structures shown in the drawings without creative labor for those skilled in the art.

[0025] Figure 1 The structure diagram of one embodiment of the condensate tank is provided.

[0026] Explanation of reference numerals:

[0027] 100, condensate tank; 1, water tank body; 11, containing cavity; 111, cavity; 12, water outlet; 2, nitrogen charging pipeline; 21, air inlet; 22, air outlet; 3, water level meter; 31, first pressure taking pipe; 32, second pressure taking pipe; 4, electromagnetic valve; 5, pressure transmitter; 6, pressure gauge.

[0028] The implementation, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0031] In addition, if the embodiments of the utility model involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, taking "A and / or B" as an example, including A scheme, or B scheme, or A and B simultaneously satisfying the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skill in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0032] The heat supply system plays an important role in modern urban infrastructure, especially in the cold season, providing necessary heat energy for residents and industries. The condensate tank, as an important part of the heat supply system, its operating efficiency directly affects the stability and economy of heat supply. In the circulation process of condensate water, oxygen in the air will dissolve into the water, causing the oxygen content of the heat supply return water to increase. This not only affects the heat exchange efficiency of the heat supply system, but also may cause pipeline corrosion and shorten the service life of the equipment.

[0033] In order to solve this problem, in recent years, many heat supply systems have begun to use nitrogen charging to separate oxygen, that is, by filling nitrogen gas into the condensate tank to reduce the oxygen content in the water. Although the nitrogen charging and oxygen separation technology has good effect in theory, in actual application, the access position of the nitrogen charging port is improper, which may cause the nitrogen gas to form bubbles in the condensate water, accelerate the dissolution of oxygen, and increase the oxygen content in the water.

[0034] The main purpose of the present application is to provide a condensate tank and a heat supply system, which aims to at least solve the technical problem that the nitrogen charging and oxygen separation increase the oxygen content in the water in the related art.

[0035] Please refer to Figure 1 In an embodiment of the present application, the condensate tank 100 comprises a water tank body 1 and a nitrogen charging pipeline 2, the water tank body 1 has a containing cavity 11, the containing cavity 11 has condensate water, and the containing cavity 11 constitutes a cavity 111 above the condensate water liquid level; the nitrogen charging pipeline 2 has an air inlet 21 and an air outlet 22, the air inlet 21 of the nitrogen charging pipeline 2 is used for injecting nitrogen gas, and the air outlet 22 of the nitrogen charging pipeline 2 is communicated with the cavity 111.

[0036] In the technical scheme of the present application, the condensate tank 100 comprises a water tank body 1 and a nitrogen charging pipeline 2, the water tank body 1 has a containing cavity 11, the containing cavity 11 has condensate water, and the containing cavity 11 constitutes a cavity 111 above the condensate water liquid level; the nitrogen charging pipeline 2 has an air inlet 21 and an air outlet 22, the air inlet 21 of the nitrogen charging pipeline 2 is used for injecting nitrogen gas, and the air outlet 22 of the nitrogen charging pipeline 2 is communicated with the cavity 111; in this way, when the water tank body 1 is charged with nitrogen to separate oxygen, the nitrogen gas directly reaches the cavity 111, and no bubbles are generated in the condensate water in the containing cavity 11, the vapor-liquid dissolution process is reduced, and thus the oxygen content is reduced.

[0037] In the condensate water system, the water level of the water tank body 1 needs to be kept within a certain range to ensure the normal operation of the system. Too high or too low water level can cause system failure or equipment damage. For example, too high water level can cause condensate water overflow, and too low water level can cause condensate water pump cavitation or system pressure instability. By monitoring the water level of the condensate tank in real time through the water level gauge 3, accurate control and adjustment of the system can be achieved. This helps to improve the efficiency and performance of the system, reduce energy consumption and equipment wear and tear.

[0038] The water level gauge 3 has various forms, and in the embodiment, the condensate tank 100 also includes a water level gauge 3, which has a first pressure tapping pipe 31 communicating with the lower end of the containing cavity 11, and a second pressure tapping pipe 32 communicating with the cavity 111; the water level gauge 3 uses the pressure difference generated by the liquid itself gravity to measure the liquid level of the condensate water in the water tank body 1, the first pressure tapping pipe 31 is always in a full water state, keeping the pressure constant, and the second pressure tapping pipe 32 forms a communicator with the container, and the pressure changes with the liquid level in the container.

[0039] In order to make the gas outlet 22 of the nitrogen charging pipeline 2 communicate with the cavity 111, the gas outlet 22 of the nitrogen charging pipeline 2 can be directly connected with the water tank body 1 or indirectly connected. In the embodiment of the utility model, the gas outlet 22 of the nitrogen charging pipeline 2 communicates with the second pressure tapping pipe 32, so that the nitrogen charging pipeline 2 is indirectly connected with the water tank body 1, compared with setting a connecting port on the pressure tapping pipe, it is obviously easier and more convenient to process.

[0040] It can be understood that the nitrogen charging of the cavity 111 is not continuous, and the amount of nitrogen charging is as little as possible while ensuring the slight positive pressure of the water outlet 12 of the water tank body 1, otherwise it will increase the carrying oxygen, so the nitrogen charging pipeline 2 needs to be closed according to the actual situation. A manual valve can be provided on the nitrogen charging pipeline 2 to close it, but there are inconvenient situations in the actual application process, so in the embodiment, the nitrogen charging pipeline 2 is also provided with a solenoid valve 4, which automatically realizes the on-off of the nitrogen charging pipeline 2 through the solenoid valve 4.

[0041] In order to better control the nitrogen charging amount, in the embodiment, the water tank body 1 is provided with a water outlet 12 for communicating with the inlet of the condensate pump; the water outlet 12 of the water tank body 1 is provided with a pressure transmitter 5; the condensate tank 100 further comprises a control device electrically connected with the pressure transmitter 5 and the electromagnetic valve 4, so as to control the electromagnetic valve 4 according to the pressure transmitter 5. In this way, the pressure of the water outlet 12 of the water tank body 1, i.e. the pressure at the inlet of the condensate pump, is monitored by the pressure transmitter 5, so that the pressure is kept at a slight positive pressure, and the less the nitrogen charging amount is, the better.

[0042] Specifically, when the pressure at the inlet of the condensate pump monitored by the pressure transmitter 5 is lower than 5kpa, the electromagnetic valve 4 is opened to charge nitrogen, and when the pressure is higher than 20Kpa, the electromagnetic valve 4 is closed, so as to ensure that the pressure at the inlet of the condensate pump is kept at about 10Kpa, and the nitrogen charging amount is reduced to reduce the oxygen content of the return water.

[0043] If the pressure in the water tank body 1 is too high, the tank body may be broken or exploded, causing serious safety accidents; if the pressure in the condensate tank 100 is too low, a negative pressure is formed, which may cause the tank body to be deformed or damaged under the action of external pressure, and the external air may enter the circulating system through the shaft seal of the condensate pump, and the oxygen content in the air is 20%, causing the oxygen content of the return water to be high. By monitoring the pressure, the abnormal increase of the pressure can be found in time, so that in the embodiment, the condensate tank 100 further comprises a pressure gauge 6 for detecting the pressure of the cavity 111. At the same time, the pressure gauge 6 cooperates with the control device and the electromagnetic valve 4 to better monitor the pressure of the whole system, so as to better control the nitrogen charging amount.

[0044] In order to enable the pressure gauge 6 to detect the cavity 111, the pressure gauge 6 can be directly connected with the water tank body 1 or indirectly connected. In the embodiment of the utility model, the nitrogen charging pipeline 2 is further provided with an electromagnetic valve 4, and the pressure gauge 6 is arranged between the gas outlet 22 and the electromagnetic valve 4; in this way, the pressure gauge 6 is indirectly connected with the cavity 111, and compared with arranging a connecting port on the water tank body 1, it is obviously easier and more convenient to process.

[0045] It can be understood that the nitrogen gas content is preferably high, and when the nitrogen gas content is lower than 99%, the oxygen content of the filled nitrogen gas itself will cause the oxygen content of the backwater to be higher than 85.8ug / L. In addition, the oxygen contained in the steam itself will cause the value to be large. Therefore, in the embodiment, a nitrogen gas detector is arranged at the gas inlet 21 of the nitrogen filling pipeline 2, the nitrogen gas content entering the nitrogen filling pipeline 2 is monitored through the nitrogen gas detector, and when the nitrogen gas content is lower than a preset value, such as 99.5%, an alarm or nitrogen filling can be paused to ensure that the oxygen content in the backwater is low.

[0046] The utility model also proposes a kind of heating system, the heating system includes condensate tank 100, the specific structure of the condensate tank 100 refers to above-mentioned embodiment, since the heating system of the present application adopts all technical solutions of above-mentioned all embodiments, at least has all beneficial effects brought by the technical scheme of above-mentioned embodiment, here will not be repeated.

[0047] In the technical scheme of the utility model, condensate tank 100 includes water tank body 1 and nitrogen filling pipeline 2, the water tank body 1 has containing cavity 11, the containing cavity 11 has condensate water, the containing cavity 11 constitutes cavity 111 above condensate water level;Nitrogen filling pipeline 2 has gas inlet 21 and gas outlet 22, the gas inlet 21 of nitrogen filling pipeline 2 is used to inject nitrogen gas, the gas outlet 22 of nitrogen filling pipeline 2 is communicated with the cavity 111;Such arrangement, when the water tank body 1 is filled with nitrogen and oxygen is isolated, nitrogen gas is directly sent to the cavity 111, and no bubble is generated in the condensate water in the containing cavity 11, the steam-water dissolution process is reduced, thereby reducing oxygen content.

[0048] Specifically, the heating system further includes a heating system, a condensate pump and a nitrogen supply device, the heating system is provided with a drain port communicated with the containing cavity 11;The inlet of the condensate pump is communicated with the water outlet 12 of the water tank body 1, and the nitrogen supply device is used to provide nitrogen gas to the gas inlet 21 of the nitrogen filling pipeline 2.

[0049] The above-mentioned is only the exemplary embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by using the utility model specification and drawing contents or directly / indirectly applied in other related technical fields under the technical concept of the utility model is included in the patent protection range of the utility model.

Claims

1. A condensate tank characterized by, The condensate tank comprises: a tank body having a containing cavity, the containing cavity containing condensate water, and the containing cavity forming an empty cavity above the condensate water level; and a nitrogen charging pipeline having an inlet and an outlet, the inlet of the nitrogen charging pipeline being used for injecting nitrogen, and the outlet of the nitrogen charging pipeline being communicated with the empty cavity. The condensate tank further comprises a water level gauge having a first pressure taking pipe communicated with the lower end of the containing cavity and a second pressure taking pipe communicated with the empty cavity.

2. The condensate tank of claim 1, wherein The outlet of the nitrogen charging pipeline is communicated with the second pressure taking pipe.

3. The condensate tank of claim 2, wherein The nitrogen charging pipeline is further provided with an electromagnetic valve.

4. The condensate tank of claim 1 wherein, The tank body is provided with a water outlet communicated with the inlet of a condensate water pump.

5. The condensate tank of claim 4, wherein The tank body is provided with a pressure transmitter at the water outlet. The condensate tank further comprises a control device electrically connected with the pressure transmitter and the electromagnetic valve, so as to control the electromagnetic valve according to the pressure transmitter. The condensate tank further comprises a pressure gauge for detecting the pressure of the empty cavity.

6. The condensate tank of claim 1 wherein, The nitrogen charging pipeline is further provided with an electromagnetic valve.

7. The condensate tank of claim 6 wherein, The pressure gauge is arranged between the outlet and the electromagnetic valve. The inlet of the nitrogen charging pipeline is provided with a nitrogen detector.

8. The condensate tank of claim 1 wherein, The condensate tank according to any one of claims 1 to 8.

9. A heating system, characterized in that The heating system further comprises:

10. The heating system of claim 9, wherein, a heating system provided with a water outlet communicated with the containing cavity; a condensate water pump having an inlet communicated with the water outlet of the tank body; and a nitrogen supply device for providing nitrogen to the inlet of the nitrogen charging pipeline. ​

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