CN215677219U - Cold-resistant, high-temperature-resistant and corrosion-resistant liquid level meter - Google Patents

Abstract

The utility model relates to the field of liquid height measurement, in particular to a cold-resistant, high-temperature-resistant and corrosion-resistant liquid level meter. The movable pulley counterweight device comprises a support and a cross beam fixed on the support, wherein a distribution box, a fixed rope ring and a plurality of fixed pulleys are sequentially fixed on the cross beam, a liquid level display and a displacement sensor are arranged in the distribution box, the fixed pulleys are respectively fixed on the cross beams on the left side and the right side of the support, one end of a rope is connected with the fixed rope ring and sequentially passes through the plurality of fixed pulleys, a movable pulley is suspended on the rope between the fixed pulley close to the fixed rope ring and the fixed rope ring, a movable pulley counterweight is suspended at the bottom of the movable pulley, and the movable pulley counterweight is connected with the displacement sensor through a displacement sensor pull rope; the other end of the rope is connected with the U-shaped clamp through a fixed pulley above the liquid to be detected, and the lower part of the U-shaped clamp is sequentially connected with the top counter weight of the floating ball, the floating ball and the bottom counter weight of the floating ball through a core penetrating rod. The float is used to follow the rise and fall of the liquid level, so as to measure the height of the liquid level and be suitable for all-weather environment and various corrosive fluids in various occasions.

Description

Cold-resistant, high-temperature-resistant and corrosion-resistant liquid level meter

Technical Field

The utility model relates to the field of liquid height measurement, in particular to a cold-resistant, high-temperature-resistant and corrosion-resistant liquid level meter.

Background

In the prior art, the liquid level height is measured by using a drop-in type liquid level meter, which consists of a pressure transmitter, a special gas guide cable with a built-in capillary hose and a probe. The disadvantages are that: 1. when the environmental temperature in the northeast region reaches about-30 ℃, the internal electrical elements of the pressure transmitter of the input type liquid level meter are influenced by the temperature, and the liquid level is inaccurate to measure. 2. A flange of a liquid level meter can not be mounted in a part of open-air pools, and steam can easily enter the pressure transmitter to burn electric elements when the liquid level meter is used. 3. The probe of the input type liquid level meter is hardened with impurities (silt, slag and the like) at the bottom of liquid with the impurities for a long time, and the probe fails. 4. When the temperature of the measuring medium is higher than 80 ℃, the input type liquid level meter cannot measure the liquid level accurately or fails.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a cold-resistant, high-temperature-resistant and corrosion-resistant liquid level meter aiming at the defects.

The technical solution of the utility model is as follows: aA cold-resistant, high-temperature-resistant and corrosion-resistant liquid level meter comprises a support and a cross beam fixed on the support, wherein a distribution box, a fixed rope ring and a plurality of fixed pulleys are sequentially fixed on the cross beam, a liquid level display and a displacement sensor are arranged in the distribution box, the fixed pulleys are respectively fixed on the cross beams on the left side and the right side of the support, one end of a rope is connected with the fixed rope ring and sequentially passes through the fixed pulleys, a movable pulley is hung on the rope between the fixed pulley close to the fixed rope ring and the fixed rope ring, a movable pulley counter weight is hung at the bottom of the movable pulley, and the movable pulley counter weight is connected with the displacement sensor through a displacement sensor pull rope; the other end of the rope is connected with the U-shaped clamp through a fixed pulley above the liquid to be measured, the bottom of the U-shaped clamp is connected with a floating ball top counterweight, and the floating ball top counterweight passes throughCore penetrating rodThe floating ball and the bottom counterweight of the floating ball are connected in sequence.

In the scheme, the method comprises the following steps:

the rope is a high molecular polyethylene rope.

The number of the supports is three, and the number of the fixed pulleys is two.

The utility model has the advantages that: 1. according to the principle of buoyancy and pulley, the potentiometer principle of the sensor is adopted, the float is used for following the rise and fall of the liquid level, the liquid level height is measured, and the device is suitable for all-weather environments and various corrosive fluids in various occasions. 2. This product is not influenced by topography and container, and support and crossbeam can select the installation according to actual conditions. 3. The electrical equipment such as the sensor does not enter a measuring medium, the measurement is not influenced by the temperature of the medium, selected parts and electrical equipment can stably run at the ambient temperature of-40-80 ℃, and the device is suitable for being used in northeast cold regions and has the characteristics of cold resistance and high temperature resistance. 4. The electrical equipment such as the display, the sensor and the like of the product is far away from the measuring liquid, avoids the entry of vapor and prevents the burning and corrosion of electrical elements; the mode of floating on the liquid level is adopted, the problem that the liquid level meter fails due to the fact that the probe is hardened and hardened with impurities at the bottom of the medium for a long time is avoided, and parts which are in contact with the measuring medium are selected for use by the liquid level meter, so that the liquid level meter is suitable for various corrosive fluids and avoids corrosion.

Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of the present invention.

Detailed Description

Referring to fig. 1, the part names are as follows: the floating ball type automatic control device comprises a floating ball 1, a floating ball bottom counterweight 2, a floating ball top counterweight 3, a U-shaped clamp 4, a piercing rod 5, a rope 6, a fixed pulley 7, a movable pulley 8, a movable pulley counterweight 9, a distribution box 10, a liquid level display 11, a displacement sensor 12, a displacement sensor pull rope 13, a fixed rope ring 14, a support 15 and a cross beam 16.

Referring to fig. 1, the cold-resistant, high-temperature-resistant and corrosion-resistant liquid level meter comprises three supports 15 and cross beams 16 fixed on the supports 15, a distribution box 10, a fixed rope ring 14 and two fixed pulleys 7 are sequentially fixed on the cross beams 16, a liquid level display 11 and a displacement sensor 12 are installed in the distribution box 10, the two fixed pulleys 7 are respectively fixed on the cross beams 16 on the left side and the right side of the middle support 15, one end of a high-molecular polyethylene rope 6 is connected with the fixed rope ring 14 and sequentially passes through the fixed pulleys 7, a movable pulley 8 is hung on the rope 6 between the fixed pulley 7 close to the fixed rope ring 14 and the fixed rope ring 14, a movable pulley counterweight 9 is hung at the bottom of the movable pulley 8, the movable pulley counterweight 9 is connected with the displacement sensor 12 through a displacement sensor rope 13, the movable pulley 8 moves up and down to pull the displacement sensor rope 13, and the displacement sensor 12 outputs 0-5V according to the displacement of the displacement sensor rope 13, Standard signals such as 0-10V, 4-20mA, RS485 digital signals and the like, the output mode is selected by a user according to the needs, the output signals are displayed on a liquid level display 11, and can also be connected to a PLC through a circuit to be displayed on a PC and a human-computer interface of the PLC, so that the ascending and descending distance of the liquid level can be known; the other end of the rope 6 is connected with the U-shaped card 4 through a fixed pulley 7 above liquid to be detected, the floating ball top counterweight 3 is connected below the U-shaped card 4, the floating ball top counterweight 3 is sequentially connected with the floating ball 1 and the floating ball bottom counterweight 2 through the penetrating rod 5, the floating ball 1 floats on the liquid level of a medium, the ascending and descending distances of the liquid level are converted into the displacement of the movable pulley 8 through the floating ball 1 and the pulley block, and the displacement of the movable pulley 8 = the displacement of the displacement sensor pull rope 13 =1/2 floating ball 1 (namely the displacement of the ascending or descending of the liquid level). The materials of the five components of the floating ball 1, the floating ball bottom counterweight 2, the floating ball top counterweight 3, the U-shaped clamp 4 and the core-through rod 5 are preferably 316 stainless steel. The material of the fixed pulley 7 and the movable pulley 8 is preferably 304 stainless steel. The preferred diameter of the high molecular weight polyethylene rope is 6 mm.

The above description is only exemplary of the present invention, and various illustrations are not intended to limit the essence of the present invention.

Claims (3)

1. The cold-resistant, high-temperature-resistant and corrosion-resistant liquid level meter is characterized by comprising a plurality of supports (15) and a cross beam (16) fixed on the supports (15), wherein a distribution box (10) and a fixed rope ring (14) are sequentially fixed on the cross beam (16), the liquid level display device comprises a plurality of fixed pulleys (7), a liquid level display (11) and a displacement sensor (12) are arranged in a distribution box (10), the fixed pulleys (7) are respectively fixed on cross beams (16) on the left side and the right side of a support (15), one end of a rope (6) is connected with a fixed rope ring (14) and sequentially passes through the fixed pulleys (7), a movable pulley (8) is hung on the rope (6) between the fixed pulley (7) close to the fixed rope ring (14) and the fixed rope ring (14), a movable pulley counterweight (9) is hung at the bottom of the movable pulley (8), and the movable pulley counterweight (9) is connected with the displacement sensor (12) through a displacement sensor pull rope (13); the other end of the rope (6) is connected with the U-shaped clamp (4) through a fixed pulley (7) above the liquid to be measured, the floating ball top counterweight (3) is connected below the U-shaped clamp (4), and the floating ball top counterweight (3) is sequentially connected with the floating ball (1) and the floating ball bottom counterweight (2) through the core penetrating rod (5).

2. The cold, high temperature and corrosion resistant liquid level gauge according to claim 1, wherein the rope (6) is a high molecular weight polyethylene rope.

3. The cold, high temperature and corrosion resistant liquid level gauge according to claim 1 or 2, wherein the number of the brackets (15) is three, and the number of the fixed pulleys (7) is two.

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