Self-cleaning non-blind area color liquid level meter

Abstract

The utility model discloses a self-cleaning non-blind area color liquid level meter which comprises a liquid level meter body and a blow-off pipe, the upper end and the lower end of the liquid level meter body are both communicated with the blow-off pipe, an air valve is arranged at the position where the upper end of the liquid level meter body is communicated with the blow-off pipe, and a water valve is arranged at the position where the lower end of the liquid level meter body is communicated with the blow-off pipe. The two ends of the top of the liquid level meter body are communicated with condensers, the two condensers are connected through an air inlet pipe, the liquid level meter has the functions of strong flushing, whole-course color display, differential pressure protection and the like, scale can be flushed, whole-course color display can be achieved, observation is clearer, corrosion of scale to an observation container is avoided, and the service life of the liquid level meter is prolonged. The maintenance intensity and the maintenance cost are reduced, the risk is reduced, and the safety coefficient is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid level gauges, in particular to a self-cleaning color liquid level gauge without blind areas. Background Art

[0002] The liquid level gauge is also called "water level gauge" or "liquid level gauge". Because the water in the boiler vaporizes at high temperature for heating, the loss of water and steam is large. Water must be constantly added to keep the water level in the boiler at a certain height. If the water level is too low, the boiler will be in danger of exploding. In order to keep track of the water level in the boiler at any time, a water level gauge is installed on the boiler. The water level gauge and the boiler form a connecting vessel.

[0003] However, most of the existing liquid level gauges are glass observation containers, the upper and lower ends of which are connected to the boiler, with a simple structure. The observation container is washed by water and steam for a long time, which is easy to scale and cause unclear observation. It is also easy to corrode, resulting in a short service life of the liquid level gauge. The maintenance intensity and cost are high. There is no protective device, and the safety risk is high. Utility Model Content

[0004] The utility model aims to provide a self-cleaning color liquid level meter without blind spots to solve the problems raised in the above background technology.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A self-cleaning color liquid level gauge with no blind spot includes a liquid level gauge body and a drain pipe. The upper and lower ends of the liquid level gauge body are connected to the drain pipe, and an air valve is provided at the connection between the upper end of the liquid level gauge body and the drain pipe, and a water valve is provided at the connection between the lower end of the liquid level gauge body and the drain pipe. Condensers are connected to both ends of the top of the liquid level gauge body, and the two condensers are connected by an air inlet pipe.

[0007] Preferably, an air inlet is provided on the air inlet pipe, and an air inlet valve is provided between the air inlet and the condenser.

[0008] Preferably, an observation cavity is provided at the front end of the liquid level meter body, a light source is provided at the rear end of the liquid level meter body, and two rows of observation windows are provided at the front end of the liquid level meter body shell. The two rows of observation windows are staggered so that there is a corresponding observation window at any height in the vertical direction of the observation cavity.

[0009] Preferably, the observation cavity is made of quartz glass, and the light source is a red-green light source.

[0010] Preferably, a sewage valve is provided at the lower end of the sewage pipe.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0012] In the utility model, the liquid level meter has the functions of strong flushing function, full color display, pressure difference protection, etc. It can flush scale and display in full color, making observation clearer, avoiding corrosion of scale to the observation container, reducing maintenance intensity and maintenance cost, reducing risks, and improving safety factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the front view of the utility model;

[0014] Figure 2 It is a side view of the utility model;

[0015] In the figure: 1. Liquid level meter body; 11. Observation window; 12. Observation chamber; 13. Light source; 2. Drain pipe; 21. Air valve; 22. Water valve; 23. Drain valve; 3. Condenser; 4. Air inlet pipe; 41. Air inlet valve; 42. Air inlet. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0017] Example:

[0018] A self-cleaning color level meter without blind spots, such as Figure 1 As shown, it includes a liquid level meter body 1 and a sewage pipe 2. The upper and lower ends of the liquid level meter body 1 are connected to the sewage pipe 2, and an air valve 21 is provided at the connection between the upper end of the liquid level meter body 1 and the sewage pipe 2, and a water valve 22 is provided at the connection between the lower end of the liquid level meter body 1 and the sewage pipe 2. Condensers 3 are connected to both ends of the top of the liquid level meter body 1, and the two condensers 3 are connected through an air inlet pipe 4.

[0019] In a possible implementation manner, an air inlet 41 is provided on the air inlet pipe 4 , and an air inlet valve 42 is provided between the air inlet 41 and the condenser 3 .

[0020] In a possible embodiment, an observation cavity 12 is provided at the front end of the liquid level meter body 1, a light source 13 is provided at the rear end of the liquid level meter body 1, and two rows of observation windows 11 are provided at the front end of the outer shell of the liquid level meter body 1. The two rows of observation windows 11 are staggered so that there is a corresponding observation window 11 at any height in the vertical direction of the observation cavity 12.

[0021] In a possible implementation, the observation chamber 12 is made of quartz glass, and the light source is a red-green light source.

[0022] In a possible implementation manner, a sewage valve 23 is provided at the lower end of the sewage pipe 2 .

[0023] By adopting the above technical solution:

[0024] 1. The existing level gauges on the market are prone to scaling, corrosion, unclear observation, and short service life during long-term high-temperature and high-pressure operation. They have no protective devices and high safety risks. This device uses the heat exchange principle, gravity effect, and process optimization, and is equipped with a heat exchange tank, air cooling system, and pressure difference protection. It achieves self-cleaning and cold protection of the observation surface. Compared with the previous use, it greatly improves the service life and observation clarity, greatly reduces the maintenance intensity, cycle, and safety risks, and saves 80% of maintenance costs.

[0025] 2. Color display principle: The observation holes of this water level meter are on two straight lines. The blind spot in the middle is eliminated by staggering the observation holes. The red and green lights directly emitted by the light source are respectively directed to the observation windows of the meter body. In the vapor phase part of the meter body, the red light is directed to the front, while the green light is obliquely incident on the wall and absorbed; at the same time, in the liquid phase part, due to the refraction of water, the green light is directed to the front, and the red light is obliquely incident on the wall and absorbed. Therefore, when observing from the front, the display effect of red vapor and green liquid; full red when the vapor is full, and full green when the liquid is full is clear at a glance.

[0026] 3. The pressure difference protection is set on the liquid (the channel corresponding to the water valve) and steam (the channel corresponding to the steam valve). When the liquid level meter is working, it is impacted by external force or burst due to other reasons. When the pressure difference is greater than the design pressure, the protection device will brake and start to avoid leakage of large amounts of liquid and steam, thus protecting personal and property safety.

[0027] Working principle, see Figure 1-2 The liquid level meter of the present application is a one-time on-site direct reading instrument for monitoring the water level of steam boilers or other pressure vessels in power plants, petrochemical and industrial and mining enterprises. It is a new type of color water level meter that has been successfully developed based on various transmission two-color water level meters at home and abroad. The water level meter has the characteristics of high measurement accuracy, good observation effect, and long service life of window components. It is mainly composed of a main body part, a control part, a display part, a pressure difference protection part, etc. The liquid level meter of the present application is a functional design of the main body based on the traditional two-color water level meter, and adds strong flushing function, full color display, pressure difference protection and other devices.

[0028] Two condensers 3 are arranged on the top of the water level gauge body. When the saturated steam in the drum flows through the condenser 3, a large amount of pure water without salt is formed by utilizing the heat dissipation function of the condenser 3. The pure water continuously washes the observation window along the inner surface of the two rows of windows, and forcibly washes away the dirt attached to the mica of the observation window (the window of the red and green display part, if scaled, will directly affect the observation effect and cause unclear observation). More importantly, a large amount of pure water formed flows back into the body cavity, and continuously replaces the saturated water in the body, and finally the saturated water in the body cavity becomes pure water without salt and impurities, so that the window is free of scale, and the color is high-definition and durable, which improves the observation effect and prolongs the service life of the window assembly.

[0029] The observation holes of this water level meter are on two straight lines. The blind spots in the middle are eliminated by staggering the observation holes. The red and green lights directly emitted by the light source are directed to the observation windows of the meter body respectively. In the vapor phase part of the meter body, the red light is directed to the front, while the green light is obliquely projected to the wall and absorbed; at the same time, in the liquid phase part, due to the refraction of water, the green light is directed to the front, while the red light is obliquely projected to the wall and absorbed. Therefore, when observing from the front, the display effect of red vapor and green liquid; full red vapor and full green liquid is clear at a glance.

[0030] The pressure difference protection is set on the liquid and steam channels. When the liquid level gauge is working, it may be impacted by external force or burst due to other reasons. When the pressure difference is greater than the design pressure, the protection device will brake and start to avoid leakage of large amounts of liquid and steam, thus protecting personal and property safety.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-cleaning color level meter without blind spots, characterized by: The invention comprises a liquid level meter body (1) and a sewage pipe (2), wherein the upper and lower ends of the liquid level meter body (1) are both connected to the sewage pipe (2), and an air valve (21) is provided at the connection point between the upper end of the liquid level meter body (1) and the sewage pipe (2), and a water valve (22) is provided at the connection point between the lower end of the liquid level meter body (1) and the sewage pipe (2), and both ends of the top of the liquid level meter body (1) are connected to condensers (3), and the two condensers (3) are connected via an air inlet pipe (4).

2. A self-cleaning color level meter without blind spots as claimed in claim 1, characterized in that: The air inlet pipe (4) is provided with an air inlet (41), and an air inlet valve (42) is provided between the air inlet (41) and the condenser (3).

3. A self-cleaning color level meter without blind spots as claimed in claim 1, characterized in that: An observation cavity (12) is provided at the front end of the liquid level meter body (1), a light source (13) is provided at the rear end of the liquid level meter body (1), and two rows of observation windows (11) are provided at the front end of the outer shell of the liquid level meter body (1). The two rows of observation windows (11) are arranged in a staggered manner so that any height in the vertical direction of the observation cavity (12) has a corresponding observation window (11).

4. A self-cleaning color level meter without blind spots as claimed in claim 3, characterized in that: The observation chamber (12) is made of quartz glass, and the light source (13) is a red-green light source.

5. A self-cleaning color level meter without blind spots as claimed in claim 1, characterized in that: A sewage valve (23) is provided at the lower end of the sewage pipe (2).

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