CN215893735U

CN215893735U - Non-contact sewage liquid level measuring device under steam environment

Info

Publication number: CN215893735U
Application number: CN202121747133.7U
Authority: CN
Inventors: 杨江雄; 杨岐
Original assignee: Jiangsu Paiwo Energy Development Co ltd
Current assignee: Jiangsu Paiwo Energy Development Co ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2022-02-22
Anticipated expiration: 2031-07-29

Abstract

The utility model discloses a non-contact sewage liquid level measuring device in a steam environment, which comprises a fermentation tank, wherein a vertical liquid level measuring tube is also arranged in the tank body, the lower end of the liquid level measuring tube is fixedly connected with the bottom of the fermentation tank, the upper end of the liquid level measuring tube is fixedly connected with the top of the fermentation tank, and the top of the liquid level measuring tube is open and is fixedly connected with a radar liquid level meter; the bottom and the bottom of the liquid level measuring pipe are both provided with a plurality of openings, the openings are communicated with the interior of the fermentation tank, the openings at the bottom form a liquid inlet and a liquid outlet, and the openings at the top form an air inlet and an air outlet; the floating ball is also placed in the liquid level measuring pipe and is in an inverted cone shape, and the diameter of the floating ball is smaller than the inner diameter of the liquid level measuring pipe. The non-contact type magnetic floating ball avoids the defects that the traditional magnetic floating ball is demagnetized at high temperature and the circuit is difficult to be soaked in hot water for heat dissipation, prolongs the service life of the liquid level measuring device and reduces the failure rate of equipment.

Description

Non-contact sewage liquid level measuring device under steam environment

Technical Field

The utility model belongs to the technical field of liquid level measurement, and particularly relates to a non-contact sewage liquid level measuring device in a steam environment.

Background

After the kitchen waste is pulped, clean energy, namely methane, is obtained through anaerobic fermentation, and the heat energy cost in the kitchen disposal link is greatly reduced. In order to achieve the best anaerobic fermentation effect, the kitchen slurry must be heated to remove most of catering grease.

The original reaction tank is indirectly heated by using a coil pipe, so that the heat efficiency is low, and the scale is easy to adhere; the current reaction tank is generally heated directly by steam, and the thermal efficiency is higher. However, a large amount of steam in the tank and thermal noise vibration generated by direct release of the steam cause the conventional liquid level transmitter not to work stably.

In the prior art, the liquid level of the magnetic float is unstable due to thermal noise vibration, so that the signal output is severe in jumping, and the liquid level height cannot be accurately displayed; the radar liquid level belongs to a non-contact liquid level transmitter; however, in a high-steam environment, the echo curve is affected by steam, so that wrong values often appear, particularly the value close to the bottom (far end) of the tank is difficult to work stably, and finally, automatic production cannot be realized.

SUMMERY OF THE UTILITY MODEL

The utility model provides a non-contact sewage liquid level measuring device in a steam environment, and aims to solve the technical problem.

Therefore, the utility model adopts the following technical scheme:

a non-contact sewage liquid level measuring device in a steam environment comprises a fermentation tank, wherein a vertical steam inlet pipe is arranged in the fermentation tank, an outlet pipe is arranged at the top of the fermentation tank, a liquid outlet pipe is arranged at the bottom of the fermentation tank, a vertical liquid level measuring pipe is also arranged in the tank body, the lower end of the liquid level measuring pipe is fixedly connected with the bottom of the fermentation tank, the upper end of the liquid level measuring pipe is fixedly connected with the top of the fermentation tank, and the top of the liquid level measuring pipe is open and is fixedly connected with a radar liquid level meter; the bottom and the bottom of the liquid level measuring pipe are both provided with a plurality of openings, the openings are communicated with the interior of the fermentation tank, the openings at the bottom form a liquid inlet and a liquid outlet, and the openings at the top form an air inlet and an air outlet;

a floating ball is also placed in the liquid level measuring tube, the floating ball is in an inverted cone shape, and the diameter of the floating ball is smaller than the inner diameter of the liquid level measuring tube; the floater is from last to the bottom including the metal reflecting plate, floating platform, counterweight plate and the toper stabilizing block that connect gradually, the floating platform is made by light material with the toper stabilizing block, the counterweight plate includes a plurality ofly, and the counterweight plate passes through screw rod fixed connection.

Further, the floating ball further comprises an upper fixing plate and a lower fixing plate, the upper fixing plate is fixed at the bottom of the floating platform, the lower fixing plate is fixed at the top of the conical stabilizing block, and the counterweight plate is connected between the upper fixing plate and the lower fixing plate.

Further, the metal reflecting plate is made of an aluminum plate.

Furthermore, the weight plate is made of polytetrafluoroethylene.

The utility model has the beneficial effects that:

1. the non-contact type magnetic floating ball avoids the defects that the traditional magnetic floating ball is demagnetized at high temperature and the circuit is difficult to be soaked in hot water for heat dissipation, prolongs the service life of the liquid level measuring device and reduces the failure rate of equipment;

2. the liquid level measuring tube greatly reduces the thermal noise vibration, the floating ball does not fluctuate greatly any more, meanwhile, the influence of steam is avoided, the echo curve is unstable, the accuracy and the stability of the liquid level numerical value are improved, and the safety production is guaranteed;

3. the liquid level measuring tube adopts a bottom liquid feeding mode, so that scum is prevented from entering the liquid level measuring tube, and the influence of the original scum on the smoothness of the up-and-down movement of the floating ball is overcome;

4. the floating ball is provided with the weight plates, the number of the weight plates can be adjusted according to the density of the liquid, so that the part of the metal reflecting plate is exposed above the liquid level, and the rest part of the metal reflecting plate is immersed in the liquid, thereby improving the stability of the floating ball.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the floating ball of the present invention;

in the figure: 1-fermentation tank, 2-steam inlet pipe, 3-outlet pipe, 4-liquid outlet pipe, 5-liquid level measuring pipe, 6-liquid inlet and outlet, 7-gas outlet, 8-radar liquid level meter, 9-floating ball, 91-metal reflecting plate, 92-floating platform, 93-upper fixed plate, 94-lower fixed plate, 95-counterweight plate, 96-conical stabilizing block and 97-screw rod.

Detailed Description

The utility model will be further described with reference to the accompanying drawings in which:

as shown in figures 1 and 2, the non-contact sewage liquid level measuring device in the steam environment comprises a fermentation tank 1, wherein a vertical steam inlet pipe 2 is arranged in the fermentation tank 1, an outlet pipe 3 is arranged at the top of the fermentation tank 1, and a liquid outlet pipe 4 is arranged at the bottom of the fermentation tank 1.

Still be equipped with vertical liquid level survey buret 5 in 1 jar bodies of fermentation cylinder, the lower extreme and 1 tank bottoms fixed connection of fermentation cylinder, upper end and 1 tank deck fixed connection of fermentation cylinder of liquid level survey buret 5, the uncovered and fixedly connected with radar level gauge 8 in top of liquid level survey buret 5. The bottom and the bottom of liquid level survey buret 5 all are equipped with a plurality of openings, inside opening intercommunication fermentation cylinder 1, the opening of bottom forms business turn over liquid mouth 6, and the opening at top forms business turn over gas port 7. The liquid inlet and outlet 6 is used for the liquid in the fermentation tank 1 to flow into and flow out of the liquid level measuring tube 5, so that the liquid level in the liquid level measuring tube 5 and the liquid level in the fermentation tank 1 are always kept at the same height; the gas outlet 7 is used for the gas in the fermentation tank 1 to flow into and flow out of the liquid level measuring tube 5, so that the liquid level measuring tube 5 is ensured to be consistent with the gas pressure in the fermentation tank 1.

The floating ball 9 is also placed in the liquid level measuring tube 5, the floating ball 9 is in an inverted cone shape, and the diameter of the floating ball 9 is smaller than the inner diameter of the liquid level measuring tube 5. The floating ball 9 comprises a metal reflecting plate 91, a floating platform 92, an upper fixing plate 93, a counterweight plate 95, a lower fixing plate 94 and a conical stabilizing block 96 which are connected in sequence from top to bottom. The metal reflecting plate 91 is made of an aluminum plate, the floating platform 92 and the conical stabilizing block 96 are made of a light material, the weight plate 95 is made of a polytetrafluoroethylene material, the weight plates 95 comprise a plurality of materials, and the weight plates 95 are fixedly connected through screws 97.

The working principle of the utility model is as follows:

when the radar electromagnetic wave meets a detection object, the electromagnetic wave is reflected back, and the circuit can calculate the distance according to the light speed and the time difference of transmitting and receiving, so that the height of the liquid level is measured and calculated. The reflection capability of the substance to the electromagnetic wave is related to the dielectric constant of the substance; the dielectric constant is large, and the reflection capability is strong; in the device, the dielectric constants are arranged from small to large as follows: air, water, metal. Therefore, the metal reflection plate 91 is used to reflect the electromagnetic wave instead of the water surface, and the echo curve is very good.

It should be noted that the above are only some embodiments of the present invention, and it should be noted that, for those skilled in the art, many modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A non-contact sewage liquid level measuring device in a steam environment comprises a fermentation tank (1), wherein a vertical steam inlet pipe (2) is arranged in the fermentation tank (1), an outlet pipe (3) is arranged at the top of the fermentation tank (1), and a liquid outlet pipe (4) is arranged at the bottom of the fermentation tank (1), and is characterized in that a vertical liquid level measuring pipe (5) is also arranged in the tank body, the lower end of the liquid level measuring pipe (5) is fixedly connected with the bottom of the fermentation tank (1), the upper end of the liquid level measuring pipe is fixedly connected with the tank top of the fermentation tank (1), and the top of the liquid level measuring pipe (5) is open and is fixedly connected with a radar liquid level meter (8); the bottom and the bottom of the liquid level measuring pipe (5) are both provided with a plurality of openings, the openings are communicated with the inside of the fermentation tank (1), the opening at the bottom forms a liquid inlet and outlet (6), and the opening at the top forms an air inlet and outlet (7);

a floating ball (9) is also placed in the liquid level measuring tube (5), the floating ball (9) is in an inverted cone shape, and the diameter of the floating ball (9) is smaller than the inner diameter of the liquid level measuring tube (5); floater (9) are from last metal reflecting plate (91), floating platform (92), counterweight plate (95) and the stable piece of toper (96) that connect gradually down, floating platform (92) and the stable piece of toper (96) are made by light material, counterweight plate (95) are including a plurality of, and counterweight plate (95) pass through screw rod (97) fixed connection.

2. The non-contact sewage level measuring device in a steam environment according to claim 1, wherein the floating ball (9) further comprises an upper fixing plate (93) and a lower fixing plate (94), the upper fixing plate (93) is fixed at the bottom of the floating platform (92), the lower fixing plate (94) is fixed at the top of the conical stabilizing block (96), and the weight plate (95) is connected between the upper fixing plate (93) and the lower fixing plate (94).

3. The device for measuring the non-contact sewage level in a steam environment according to claim 1, wherein the metal reflecting plate (91) is made of an aluminum plate.

4. The device for measuring non-contact sewage level in a steam environment according to claim 1, wherein the weight plate (95) is made of polytetrafluoroethylene.