CN2103123U - CWS Diaphragm Level Gauge - Google Patents

Abstract

The utility model relates to a liquid level gauge which is especially suitable for measuring the liquid level of coal water slurry pots. The opening of the lower side of a coal water slurry pot is fixedly connected with a pot flange plate, and the pot flange plate is provided with a liquid tank which is connected with the pot flange plate by outer flange plates arranged on the circumference of the liquid tank. The liquid tank is provided with a flexible diaphragm whose edges are connected to the periphery of an opening arranged on one side of the liquid tank, and the flexible diaphragm forms a convex spherical surface which bulges to extend to the opening arranged on the lower side of the coal water slurry pot. The coal water slurry does not contact the measuring elements of the liquid level gauge directly, and thus, exact and clear measuring values is ensured to be obtained. With structure is simple and convenient operation, the utility model is also suitable for measuring any two-phase solid-liquid fluid.

Description

The utility model relates to a liquid level measuring instrument, which is especially suitable for measuring the liquid level in a coal-water slurry tank.

As we all know, coal-water slurry can be used to replace petroleum as fuel on the one hand, and the price is greatly reduced; on the other hand, the combustion efficiency is as high as 99%, which is much higher than that of ordinary coal, and there are very few pollutants, so it is also used to replace ordinary coal. Therefore, in recent years, coal-water slurry has become a new type of fuel recognized by people, and it is being promoted and used in our country. The monitoring and measurement of the liquid level in the slurry tank is an important link in the preparation and production of coal-water slurry.

At present, the liquid level measurement of coal water slurry still adopts conventional liquid level gauges, such as: float type, ultrasonic type, pressure sensor and various slider type liquid level gauges, because coal water slurry is a solid-liquid two-phase high Concentration and high-viscosity opaque fluid, so there are many disadvantages when using a conventional liquid level gauge to directly measure the liquid level of coal water slurry. The slurry is solidified on the rod, and the liquid level cannot be recognized. In short, the conventional liquid level gauge cannot meet the measurement of the coal-water slurry liquid level directly.

The purpose of this utility model is to provide a kind of coal-water slurry diaphragm liquid level meter, it is between the coal-water slurry tank and the liquid tank, and is separated by the convex surface soft diaphragm that protrudes to one side of the coal-water slurry tank, because the water-coal slurry Changes in the liquid level of the coal-water slurry in the slurry, changes in the pressure on the lower side of the tank, and changes in the pressure on the soft diaphragm deform the soft diaphragm, thereby changing the liquid level in the glass tube on the side of the liquid tank, which is displayed through a conventional pressure sensor and a connected glass tube The change of the liquid level can achieve the purpose of indirectly measuring the liquid level of the coal-water slurry.

The purpose of this utility model is achieved in that at the lower side opening of the coal-water slurry tank, a tank flange is fixedly connected, and a liquid tank connected to the tank flange with an outer flange on its circumference is provided. There is a soft diaphragm connected to the periphery of the opening on one side of the liquid tank by its edge, and the soft diaphragm has a convex spherical surface and protrudes into the lower side opening of the coal-water slurry tank.

Due to the adoption of the above solution, the coal water slurry does not directly contact the measuring element of the liquid level gauge, so accurate and clear measurement values can be guaranteed. In addition, the structure is simple and easy to use.

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a schematic diagram of an embodiment of the utility model.

In the figure: 1. tank flange, 2. liquid tank, 3. soft diaphragm, 4. glass tube, 5. pressure sensor, 6. pressure ring, 2a. side hole step, 2b. upper hole step, 2c. Outer flange.

In the embodiment shown in Figure 1, an outwardly protruding tank flange 1 is welded at the lower side opening of the coal-water slurry tank, the liquid tank 2 has an opening with a perimeter on the right side, and a fairy hole step 2a on the left side , the upper end has an upper hole step 2b and a flange 2c welded on the circumference, and the soft diaphragm 3 is connected with a pressure ring 6 and a screw on the right side of the liquid tank 2, and the soft diaphragm 3 is a convex ball or nipple protruding outward surface, or bimodal surface, its thickness and elasticity are selected according to the diameter of the coal water slurry tank, the outer flange 2c of the liquid tank 2 is connected to the tank flange 1 with bolts, and the water inlet pipe is connected to the side hole step 2a On the top, the glass tube 4 is connected to the water inlet pipe near the end of the liquid tank 2 and is vertically upward, and the scale is marked on the glass tube. The pressure sensor 5 is connected to the upper hole step 2b, and the pressure sensor 5 has a liquid level display and an alarm system. wait.

The liquid level measurement principle and the determination of the scale value are as follows:

When the amount of coal-water slurry in the coal-water slurry tank increases, the pressure on the lower side of the tank increases, causing the protruding part of the soft diaphragm 3 to deform inward, and the liquid level in the liquid tank 2 rises, which is displayed on the scale of the glass tube 4, Simultaneously through the display in the pressure sensor 5 and the alarm etc. that exceed the specified amount. The scale height of the liquid level in the liquid tank cannot directly reflect the liquid level of the coal-water slurry, because the height of the liquid level in the liquid tank is also related to the ratio of the specific gravity of the coal-water slurry to the specific gravity of the liquid in the liquid tank, so it must be determined after conversion. Scale value for liquid level. For the sake of cost reduction, the liquid tank in this embodiment is filled with water as the medium, and the liquid level display system can also be connected with a microcomputer for dynamic measurement. In addition, the utility model can be suitable for measuring solid-liquid two-phase fluid.

Claims (6)

1, a kind of coal water mixture diaphragm liquid level gauge, it is characterized in that: at coal water mixture jar downside opening part, fixedly connected one jar of ring flange, be provided with the outside flange dish on its circumference and be connected fluid box on jar ring flange, be provided with the limit diaphragm that is connected fluid box one side opening periphery with its edge, and limit diaphragm is protruding sphere, the outstanding coal water mixture jar downside opening part that stretches into.

2, by the described coal water mixture diaphragm of claim 1 liquid level gauge, it is characterized in that: be communicated with vertically up and the glass tube of band scale at fluid box one downside.

3, by the described coal water mixture diaphragm of claim 1 liquid level gauge, it is characterized in that: on fluid box, be communicated with pressure transducer.

4, by the described coal water mixture diaphragm of claim 1 liquid level gauge, it is characterized in that: limit diaphragm is protruding sphere.

5, by the described coal water mixture diaphragm of claim 1 liquid level gauge, it is characterized in that: limit diaphragm is the nipple face.

6, by the described coal water mixture diaphragm of claim 1 liquid level gauge, it is characterized in that: limit diaphragm is bimodal.