CN220792779U - A deaerator overflow port anti-jet device - Google Patents

Abstract

The utility model discloses a deaerator overflow port anti-air jet device, which belongs to the field of coke oven heat recovery technology. The device comprises a device body, a cavity is provided inside the device body, a float is provided inside the cavity, and a float lifting device is provided on the float. The device solves the problem that the water column pressure of the U-shaped water seal of the deaerator is insufficient due to insufficient space. When the pressure inside the deaerator fluctuates or is too high, there is a danger of breaking the water seal, causing a large amount of steam to leak out and cause steam leakage, the dissolved oxygen in the water outlet of the deaerator increases within a period of time, and safety hazards.

Description

A deaerator overflow port anti-jet device

Technical Field

The utility model belongs to the technical field of coke oven heat recovery and relates to an anti-air jet device at the overflow port of a deaerator.

Background technique

The atmospheric deaerator water seal is also called a U-shaped overflow pipe. The water seal plays the role of a safety valve and a high water level alarm. The specific functions are as follows: when the water level in the deaerator tank is too high, it can overflow through the water seal cylinder; when the deaerator exceeds the normal working pressure, the water seal is destroyed and the stored water can be pressed away first and then the steam can be discharged. The above operation can prevent the deaerator from overpressure.

The water tank of the atmospheric thermal deaerator is connected to the deaerator head. When the deaerator head is over-pressurized, although the working pressure of the deaerator is very low, the water tank is still dangerous due to the large volume of the deaerator water tank. Furthermore, due to the low working pressure of the atmospheric deaerator, the operation of its safety valve is not very reliable. Therefore, using a water seal instead of a safety valve is not only simple in structure and reliable in operation, but also does not require too high maintenance costs. Atmospheric thermal deaerators widely use water seals to prevent the deaerator from over-pressurization. Some more advanced deaerators are equipped with both safety valves and water seals.

The overflow of the atmospheric deaerator in the prior art mostly adopts a U-shaped water seal design. The U-shaped water seal relies on the height of the water column to generate the corresponding pressure, and has certain requirements for the installation location space and height. However, the U-shaped water seal (U-shaped overflow pipe) of the existing atmospheric deaerator is generally low in height due to the height of the overflow of the deaerator equipment, or the water seal section is not fully filled with water during operation. A 2m high water seal pipe water column is usually used, and its static pressure is only equivalent to a gauge pressure of 0.02MPa. When the internal pressure of the deaerator fluctuates or is too high, the water seal may be broken, causing a large amount of steam to leak out, causing water and steam leakage. It is generally difficult to set a higher water column at the installation site of the deaerator. Improper water seal treatment is very easy to break through, causing steam leakage. The above situation not only affects the normal operation of the deaerator, but also the water injection process is cumbersome, which often causes the problem of increased dissolved oxygen in the deaerator outlet water for a period of time and safety hazards. Some installation sites choose to seal the overflow of the deaerator to prevent possible steam leakage, but the above operation will cause the overflow to fail to achieve normal overflow and prevent overpressure.

Utility Model Content

In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the utility model is to provide a deaerator overflow anti-air jet device, which solves the problem of insufficient water column pressure caused by insufficient space for the U-shaped water seal of the deaerator. When the internal pressure of the deaerator fluctuates or is too high, there is a danger of breaking the water seal, causing a large amount of steam to leak out and cause steam leakage, increase of dissolved oxygen in the deaerator outlet water for a period of time, and safety hazards.

In order to achieve the above purpose, the utility model adopts the following technical solutions:

The utility model provides a deaerator overflow port anti-air jet device, comprising a device body, wherein a cavity is arranged inside the device body, a floating ball is arranged inside the cavity, and a floating ball lifting device is penetrated through the floating ball.

In the specific implementation process, an inlet and an outlet are provided on the device body.

In a specific implementation process, a filter is provided at the inlet of the device body.

In a specific implementation process, the outlet is arranged at the bottom of the device body.

In a specific implementation process, the caliber of the outlet is smaller than the diameter of the float.

In the specific implementation process, the float lifting device includes a connecting rod, a diaphragm plate and a spring;

The upper end of the connecting rod is connected to the lower surface of the diaphragm, and the spring is arranged in the space between the upper surface of the diaphragm and the top plate of the device body.

In a specific implementation process, a through hole is opened in the middle of the float, and the connecting rod passes through the through hole.

In a specific implementation process, a limiting structure is provided on the lower end of the connecting rod, and the limiting structure prevents the floating ball from falling.

In a specific implementation process, a first sealing gasket is provided between the float and the connecting rod.

In a specific implementation process, a second sealing gasket is provided on the outer ring of the diaphragm.

Compared with the prior art, the utility model has the following beneficial effects:

The utility model provides a deaerator overflow port anti-air jet device. The device utilizes the buoyancy principle so that the float in the device can rise and fall with the change of water level according to the amount of condensed water, and continuously discharge the condensed water; when the condensed water stops entering, the float drops to the bottom, returns to the closed position, and the drainage stops. Since the outlet of the funnel-shaped water seal is always below the condensed water level, water and gas can be naturally separated, so as to achieve the purpose of no steam leakage during normal operation. At the same time, the float lifting device is utilized to release steam when the deaerator is over-pressured, so as to achieve the effect of preventing the deaerator from being over-pressured, and solves the problem of insufficient water column pressure caused by insufficient space of the U-shaped water seal of the deaerator. When the internal pressure of the deaerator fluctuates or is too high, there is a danger of breaking the water seal.

The above device is designed to address the disadvantage that the U-shaped water seal of the deaerator requires an excessively high water column to provide pressure. The device has no requirements for the installation position and height, but can also achieve the purpose of releasing water without releasing steam during normal operation. In case of overpressure, steam can be released in time to ensure operational safety.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a deaerator overflow port anti-air jet device of the utility model;

Among them: 1-filter; 2-floating ball; 3-connecting rod; 4-diaphragm; 5-spring; 6-device body; 7-first sealing gasket; 8-second sealing gasket.

Detailed ways

In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

The utility model provides a deaerator overflow port anti-air jet device, comprising a filter 1, a float 2, a connecting rod 3, a diaphragm 4, a spring 5, a device body 6, a first sealing pad 7, and a second sealing pad 8.

Among them, the connecting rod 3, the diaphragm 4 and the spring 5 constitute the floating ball lifting device.

An inlet and an outlet are provided on the device body 6, and a cavity is provided inside; the float 2 is arranged inside the cavity, the filter 1 is arranged at the inlet of the device body 6, and the outlet is arranged at the bottom of the device body 6; the diameter of the float 2 is larger than the caliber of the outlet; a float lifting device is arranged through the float 2, the upper end of the connecting rod 3 in the float lifting device is connected to the lower surface of the diaphragm 4, and the spring 5 is arranged in the space between the upper surface of the diaphragm 4 and the top plate of the device body 6; further, a through hole is provided in the middle of the float 2, and the connecting rod 3 passes through the through hole; a limiting structure is provided on the lower end of the connecting rod 3, and the limiting structure prevents the float 2 from falling; specifically, the limiting structure provided on the lower end of the connecting rod 3 is a fixedly connected (welded) limiting block, the bottom of the connecting rod 3 protrudes larger than the diameter of the hole of the float 2, the structure of the connecting rod 3 is similar to an inverted long nail, and the device described in the utility model is functionally similar to a valve.

In the specific implementation process, in order to obtain a better sealing effect, a first sealing gasket 7 is provided between the float 2 and the connecting rod 3 , and a second sealing gasket 8 is provided on the outer ring of the diaphragm 4 .

Specifically, the first sealing gasket 7 is an annular sealing gasket with a hole in the middle, and is connected to the float 2 .

The types of the first sealing gasket 7 and the second sealing gasket 8 vary with the size of the valve, and rubber material is preferred.

The utility model is further described in detail below with reference to the accompanying drawings:

As shown in FIG1 , the utility model provides a deaerator overflow port anti-jet device, and the use process is as follows: the fluid first passes through the filter 1 from the device inlet. When the incoming fluid is liquid (overflow water or condensed water), the float 2 will float up due to the buoyancy, and the overflow water or condensed water can leave through the bottom opening. When steam enters, the float 2 cannot move to form a water seal, so that the water vapor is naturally separated to prevent air leakage. When the steam pressure entering the device is too high and reaches the preset starting pressure, the diaphragm 4 is compressed, and the spring 5 is compressed, driving the float 2 to leave through the connecting rod 3, and the device outlet leaks out, and the steam is released, which solves the problem of insufficient water column pressure due to insufficient space in the deaerator U-shaped water seal, which may cause steam leakage and safety hazards.

Example

This embodiment provides a deaerator overflow port anti-air jet device, comprising a replaceable filter 1 arranged at the inlet of the device body 6, a float 2 and a connecting rod 3 at the center of the device body 6, and a diaphragm 4 and a spring 5 at the other side of the connecting rod 3, wherein the center of the float 2 has a through hole, the connecting rod 3 passes through the through hole, the bottom of the connecting rod 3 protrudes larger than the hole diameter of the float 2, and the top of the connecting rod 3 is connected to the diaphragm 4. A spring 5 is provided on the other side of the diaphragm 4.

The above-mentioned filter 1 is located at the entrance of the device body 6, and the external structure of the device body 6 is designed to be detachable, which is convenient for maintenance and replacement of the filter 1 at any time; there is a sealing gasket between the float 2 and the connecting rod 3; an outlet is provided at the bottom of the internal cavity of the device body 6, and the size of the outlet pipe is smaller than the size of the float 2; the outer ring of the diaphragm 4 is provided with a second sealing gasket 8; the spring 5 is arranged between the diaphragm 4 and the inner wall of the device body 6.

The utility model provides a deaerator overflow anti-air jet device using the buoyancy principle. The float 2 is raised and lowered according to the amount of condensed water and the change of water level, and the opening of the valve seat hole is automatically adjusted to continuously discharge condensed water. When the condensed water stops entering, the float 2 drops to the bottom and returns to the closed position, and the drainage stops. Since the funnel-shaped water seal outlet is always below the condensed water level, water and gas are naturally separated, so that no steam leakage is achieved during normal operation. At the same time, the diaphragm 4 and the spring 5 in the float lifting device are used to release steam when the deaerator is over-pressurized, so as to prevent the deaerator from over-pressurizing.

The above content is only for explaining the technical idea of the utility model and cannot be used to limit the protection scope of the utility model. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the utility model shall fall within the protection scope of the claims of the utility model.

Claims (9)

1. The anti-jet device for the overflow port of the deaerator is characterized by comprising a device body (6), wherein a cavity is formed in the device body (6), a floating ball (2) is arranged in the cavity, and a floating ball lifting device is arranged on the floating ball (2) in a penetrating manner;

the floating ball lifting device comprises a connecting rod (3), a diaphragm plate (4) and a spring (5);

the upper end of the connecting rod (3) is connected with the lower surface of the diaphragm plate (4), and the spring (5) is arranged in a space between the upper surface of the diaphragm plate (4) and the top plate of the device body (6).

2. The deaerator overflow port air injection preventing device according to claim 1, wherein the device body (6) is provided with an inlet and an outlet.

3. The deaerator overflow port jet protection device according to claim 2, characterized in that the inlet of the device body (6) is provided with a filter (1).

4. The deaerator overflow port jet protection device according to claim 2, characterized in that the outlet is arranged at the bottom of the device body (6).

5. The deaerator overflow port air injection preventing device according to claim 4, wherein the diameter of the outlet is smaller than the diameter of the floating ball (2).

6. The deaerator overflow port air injection preventing device according to claim 1, wherein a through hole is formed in the middle of the floating ball (2), and the connecting rod (3) penetrates through the through hole.

7. The deaerator overflow port air injection preventing device according to claim 1, wherein a limiting structure is arranged at the lower end of the connecting rod (3), and the floating ball (2) cannot fall off due to the limiting structure.

8. The deaerator overflow port air injection preventing device according to claim 1 or 6, wherein a first sealing gasket (7) is arranged between the floating ball (2) and the connecting rod (3).

9. The deaerator overflow port air injection prevention device according to claim 1, characterized in that the outer ring of the diaphragm plate (4) is provided with a second sealing gasket (8).