Blowing device capable of preventing crystallization

Abstract

The utility model discloses an anti-crystallization blowing device, which relates to the field of phosphorus chemical industry production, and comprises a device main body and an air supply mechanism, the device main body comprises an upper annular connecting piece, a middle pipe and a lower annular connecting piece which are sequentially connected from top to bottom, and the lower annular connecting piece is used for being connected with a measuring port flange plate; the upper annular connecting piece is used for being connected with a liquid level meter flange plate, a through hole is formed in the middle pipe and connected with one end of an air supply mechanism, and the other end of the air supply mechanism is used for being connected with an air source. The anti-crystallization blowing device solves the problem that when the liquid level meter measures the liquid level of a medium prone to crystallization, crystals are prone to being formed at the position of a transmitting antenna of the liquid level meter, and consequently measurement is inaccurate.

Description

Technical Field

[0001] The utility model relates to the field of phosphorus chemical production, in particular to an anti-crystallization blowing device. Background Art

[0002] In the phosphorus chemical production process, liquid level gauges are installed on many storage tanks and reactors to measure the liquid level in the storage tanks and reactors. The liquid level detection signals are generally connected to control systems such as DCS and PLC, playing roles such as liquid level detection, forming PID regulation with other regulating elements, and safety and environmental protection. In the actual production process, some process media are prone to crystallization due to chemical and physical properties, and the crystallized substances will accumulate at the measurement interface of the liquid level gauge, resulting in inaccurate liquid level measurement or system freeze, affecting the stability and continuity of process production. When a liquid level gauge fails, it will cause overflow or dry running of the pump, directly affecting the product output, increasing the safety and environmental protection risks and the economic losses caused by pump body damage. At the same time, it will also increase the time cost of process and instrument maintenance personnel. Content of the Utility Model

[0003] To solve the above technical problems, the utility model provides an anti-crystallization blowing device, which solves the problem that crystals are likely to form at the transmitting antenna of the liquid level gauge, resulting in inaccurate measurement when measuring the liquid level of easily crystallized media.

[0004] To achieve the above object, the utility model provides the following solutions:

[0005] The utility model provides an anti-crystallization blowing device, including a device main body and a gas supply mechanism. The device main body includes an upper annular connecting piece, an intermediate pipe, and a lower annular connecting piece connected in sequence from top to bottom. The lower annular connecting piece is used to connect with the measurement port flange, the upper annular connecting piece is used to connect with the liquid level gauge flange, a through hole is provided on the intermediate pipe, one end of the through hole is connected to one end of the gas supply mechanism, and the other end of the gas supply mechanism is used to connect with a gas source.

[0006] Preferably, it further includes an upper annular seal, which is used to be arranged between the upper annular connecting piece and the liquid level gauge flange.

[0007] Preferably, it further includes a lower annular seal, which is used to be arranged between the lower annular connecting piece and the measurement port flange.

[0008] Preferably, the upper annular connecting piece is an upper flange, and the upper flange is used to connect with the liquid level gauge flange through a plurality of upper connecting components.

[0009] Preferably, the upper connecting component includes an upper bolt and an upper nut. The upper bolt is used to sequentially pass through the liquid level gauge flange and the upper flange and install the upper nut.

[0010] Preferably, the lower annular connecting member is an open flange cover, and the open flange cover is used to be connected to the measuring port flange through a plurality of lower connecting components.

[0011] Preferably, the lower connecting component includes a lower bolt and a lower nut. The lower bolt is used to sequentially pass through the measuring port flange and the open flange cover and install the lower nut.

[0012] Preferably, a plurality of through holes are provided, and a quick-connect terminal joint is provided on each of the through holes. The air supply mechanism includes an air supply main pipe and a plurality of air supply branch pipes. One end of each air supply branch pipe is connected to a quick-connect terminal joint, and the other end is connected to the air supply main pipe. A regulating valve is provided on the air supply main pipe, and the air supply main pipe is used to be connected to the air source.

[0013] Preferably, the intermediate pipe is a circular pipe, and a plurality of the through holes are evenly distributed along the circumferential direction of the intermediate pipe.

[0014] Preferably, the air supply mechanism further includes a first quick-connect tee joint, two intermediate connecting pipes, and two second quick-connect tee joints. The through holes and the air supply branch pipes are both provided with four. One end of the air supply main pipe away from the air source is connected to the air inlet of the first quick-connect tee joint. One end of each of the two intermediate connecting pipes is connected to one of the two air outlets of the first quick-connect tee joint. The other end of each intermediate connecting pipe is connected to the air inlet of a second quick-connect tee joint. One end of one of the two air supply branch pipes is connected to one of the two air outlets of a second quick-connect tee joint, and one end of the other two air supply branch pipes is connected to one of the two air outlets of the other second quick-connect tee joint.

[0015] The utility model has achieved the following technical effects compared with the prior art:

[0016] The lower annular connecting member of the anti-crystallization blowing device of the utility model is used to be connected to the measuring port flange, and the upper annular connecting member is used to be connected to the liquid level gauge flange. Through holes are provided on the intermediate pipe, one end of the through holes is connected to the air supply mechanism, and the other end of the air supply mechanism is connected to the air source, so that compressed air enters the intermediate pipe. Since the upper liquid level gauge side is sealed, a slightly positive pressure will be formed in the intermediate pipe space, blocking the medium steam from entering the liquid level gauge transmitting antenna, achieving the effect of isolating the liquid level gauge transmitting antenna from the medium steam, solving the problem that crystals are likely to form at the liquid level gauge transmitting antenna when measuring the liquid level of a crystallizable medium, resulting in inaccurate measurement, reducing the failure rate of the liquid level gauge, reducing the workload of instrument maintenance personnel, and avoiding affecting the stability and continuity of process production. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 Schematic diagram of the use of the anti-crystallization blowing device provided by the present invention;

[0019] Figure 2 Schematic diagram of the structure of the device main body in the anti-crystallization blowing device provided by the present invention.

[0020] Explanation of reference numerals: 1, upper annular connecting piece; 2, intermediate pipe; 3, lower annular connecting piece; 4, liquid level gauge flange; 5, measuring port flange; 6, upper annular seal; 7, upper bolt; 8, upper nut; 9, lower annular seal; 10, lower bolt; 11, lower nut; 12, quick-connect terminal joint; 13, air supply branch pipe; 14, air supply main pipe; 15, regulating valve; 16, air source; 17, first quick-connect three-way joint; 18, intermediate connecting pipe; 19, second quick-connect three-way joint; 20, medium steam. Detailed implementation manners

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0022] The purpose of the present invention is to provide an anti-crystallization blowing device, which solves the problem that when measuring the liquid level of a crystallizable medium with a liquid level gauge, crystals are likely to form at the transmitting antenna of the liquid level gauge, resulting in inaccurate measurement.

[0023] To make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the drawings and specific implementation manners.

[0024] Such as Figure 1 - Figure 2As shown in the figure, this embodiment provides an anti-crystallization blowing device, which includes a device main body and a gas supply mechanism. The device main body includes an upper annular connector 1, an intermediate pipe 2, and a lower annular connector 3 that are connected in sequence from top to bottom. The lower annular connector 3 is used to connect with the measuring port flange 5, and the upper annular connector 1 is used to connect with the liquid level gauge flange 4. A through hole is provided on the intermediate pipe 2, and one end of the through hole is connected to the gas supply mechanism. The other end of the gas supply mechanism is used to connect with the gas source 16.

[0025] During use, compressed air enters the intermediate pipe 2 through the gas supply mechanism. Since the upper liquid level gauge side is sealed, a slightly positive pressure will be formed in the space of the intermediate pipe 2, blocking the medium steam 20 from entering the liquid level gauge transmitting antenna, achieving the effect of isolating the liquid level gauge transmitting antenna from the medium steam 20. It solves the problem that when measuring the liquid level of a crystallizable medium with a liquid level gauge, crystals are likely to form at the liquid level gauge transmitting antenna, resulting in inaccurate measurement. It reduces the failure rate of the liquid level gauge, improves the reliability of the liquid level gauge, reduces the workload of instrument maintenance personnel, avoids affecting the stability and continuity of process production, and avoids problems such as overflow or empty pump caused by liquid level gauge failure, directly affecting product output, increasing safety and environmental protection risks, and economic losses due to pump body damage. In addition, this blowing device has a simple structure, is convenient for processing and manufacturing, is basically maintenance-free, can be used for a long time, and can be used for liquid level gauges of the same specification to avoid all gas crystallization interference with measurement.

[0026] This embodiment also includes an upper annular seal 6, which is used to be arranged between the upper annular connector 1 and the liquid level gauge flange 4. By setting the upper annular seal 6, the sealing performance between the upper annular connector 1 and the liquid level gauge flange 4 is enhanced.

[0027] This embodiment also includes a lower annular seal 9, which is used to be arranged between the lower annular connector 3 and the measuring port flange 5. By setting the lower annular seal 9, the sealing performance between the lower annular connector 3 and the measuring port flange 5 is enhanced.

[0028] In this specific embodiment, both the upper annular seal 6 and the lower annular seal 9 adopt tetrafluoro sealing gaskets.

[0029] Specifically, the upper annular connector 1 is an upper flange. The upper flange in this embodiment is welded to the upper part of the intermediate pipe 2, and the upper flange is used to connect with the liquid level gauge flange 4 through a plurality of upper connection components.

[0030] In this specific embodiment, the upper connection component includes an upper bolt 7 and an upper nut 8. The upper bolt 7 is used to sequentially pass through the liquid level gauge flange 4 and the upper flange and install the upper nut 8. During this installation process, the upper annular seal 6 is located between the liquid level gauge flange 4 and the upper flange.

[0031] Specifically, the lower annular connecting member 3 is an open-hole flange cover. In this embodiment, the open-hole flange cover is welded to the lower part of the intermediate pipe 2, and the open-hole flange cover is used to connect to the measuring port flange 5 through a plurality of lower connecting components.

[0032] In this specific embodiment, the lower connecting component includes a lower bolt 10 and a lower nut 11. The lower bolt 10 is used to sequentially pass through the measuring port flange 5 and the open-hole flange cover and install the lower nut 11. During this installation process, the lower annular seal 9 is located between the measuring port flange 5 and the open-hole flange cover.

[0033] To improve the air intake efficiency, a plurality of through holes are provided, and a quick-connect terminal joint 12 is provided on each through hole. The air supply mechanism includes an air supply main pipe 14 and a plurality of air supply branch pipes 13. One end of each air supply branch pipe 13 is connected to a quick-connect terminal joint 12, and the other end is connected to the air supply main pipe 14. A regulating valve 15 is provided on the air supply main pipe 14, and the air supply main pipe 14 is used to connect to the air source 16. The regulation of the air flow rate on the air supply main pipe 14 is achieved by setting the regulating valve 15.

[0034] The air source 16 in this embodiment is compressed air, and the blowing device requires that the pressure of the compressed air is not high. As long as 0.2 MPa can meet the use conditions, it will not affect the use of compressed air by other surrounding structures.

[0035] In this specific embodiment, the intermediate pipe 2 is a circular pipe, and a plurality of through holes are evenly distributed along the circumferential direction of the intermediate pipe 2, thereby improving the uniformity of the gas entering the intermediate pipe 2. Specifically, the intermediate pipe 2 is a seamless pipe made of 316L material with a diameter of φ108×4 mm.

[0036] In this embodiment, the size of the upper flange is determined according to the size of the liquid level gauge flange 4, and the size of the open-hole flange cover is determined according to the size of the measuring port flange 5. Specifically, the upper flange is a DN100 flange made of 316L material, and the open-hole flange cover is a DN150 flange made of 316L material, and a hole with a diameter of φ110 mm is opened on the flange.

[0037] The upper flange, the intermediate pipe 2, and the open-hole flange cover in this embodiment are all made of 316L material and can be used in various acid and alkali corrosive places.

[0038] The liquid level gauge in this embodiment is a radar liquid level gauge, and its model is VEGAPS6X 80Hz, which improves the measurement accuracy of the liquid level gauge.

[0039] Such as Figure 1As shown, the air supply mechanism further includes a first quick-connect three-way joint 17, two intermediate connecting pipes 18, and two second quick-connect three-way joints 19. Both the through hole and the air supply branch pipe 13 are provided in four. One end of the air supply main pipe 14 away from the air source 16 is connected to the air inlet of the first quick-connect three-way joint 17. One ends of the two intermediate connecting pipes 18 are respectively connected to the two air outlets of the first quick-connect three-way joint 17. The other end of each intermediate connecting pipe 18 is connected to the air inlet of a second quick-connect three-way joint 19. One ends of the two air supply branch pipes 13 are respectively connected to the two air outlets of a second quick-connect three-way joint 19, and one ends of the other two air supply branch pipes 13 are respectively connected to the two air outlets of another second quick-connect three-way joint 19.

[0040] In this embodiment, the air supply main pipe 14, the air supply branch pipe 13, and the intermediate connecting pipe 18 are all made of PE hoses, which facilitates the gas distribution layout of the gas path and is also convenient for later maintenance and moving the liquid level gauge.

[0041] In this specification, specific examples are used to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A blowing device to prevent crystallization, characterized in that: The device comprises a device body and an air supply mechanism, wherein the device body comprises an upper annular connector, an intermediate tube and a lower annular connector which are sequentially connected from top to bottom, wherein the lower annular connector is used to connect to a measuring port flange, and the upper annular connector is used to connect to a level gauge flange. A through hole is provided on the intermediate tube, and the through hole is connected to one end of the air supply mechanism, and the other end of the air supply mechanism is used to connect to an air source.

2. The anti-crystallization blowing device according to claim 1, characterized in that: It also includes an upper annular seal, which is used to be arranged between the upper annular connecting piece and the liquid level gauge flange.

3. The crystallization prevention blowing device according to claim 1, characterized in that: It also includes a lower annular seal, which is used to be arranged between the lower annular connector and the measuring port flange.

4. The crystallization prevention blowing device according to claim 1, characterized in that: The upper annular connecting member is an upper flange, and the upper flange is used to be connected to the level gauge flange through a plurality of upper connecting components.

5. The crystallization prevention blowing device according to claim 4, characterized in that: The upper connection assembly includes an upper bolt and an upper nut, wherein the upper bolt is used to sequentially pass through the level gauge flange and the upper flange and install the upper nut.

6. The crystallization prevention blowing device according to claim 1, characterized in that: The lower annular connecting member is a perforated flange cover, and the perforated flange cover is used to be connected to the measuring port flange through a plurality of lower connecting components.

7. The crystallization prevention blowing device according to claim 6, characterized in that: The lower connection assembly includes a lower bolt and a lower nut, and the lower bolt is used to pass through the measuring port flange and the opening flange cover in sequence and install the lower nut.

8. The crystallization prevention blowing device according to claim 1, characterized in that: The through holes are arranged in plurality, each of which is provided with a quick-plug terminal connector, the gas supply mechanism comprises a gas supply main pipe and a plurality of gas supply branch pipes, one end of each of the gas supply branch pipes is connected to a quick-plug terminal connector, and the other end is connected to the gas supply main pipe, a regulating valve is provided on the gas supply main pipe, and the gas supply main pipe is used to be connected to the gas source.

9. The crystallization prevention blowing device according to claim 8, characterized in that: The middle tube is a round tube, and the plurality of through holes are evenly distributed along the circumference of the middle tube.

10. The crystallization prevention blowing device according to claim 8, characterized in that: The air supply mechanism also includes a first quick-plug three-way joint, two intermediate connecting pipes and two second quick-plug three-way joints. The through holes and the air supply branches are both set to four. The end of the air supply main pipe away from the air source is connected to the air inlet of the first quick-plug three-way joint, one end of the two intermediate connecting pipes is respectively connected to the two air outlets of the first quick-plug three-way joint, the other end of each of the intermediate connecting pipes is connected to the air inlet of one of the second quick-plug three-way joints, one end of the two air supply branches is respectively connected to the two air outlets of one of the second quick-plug three-way joints, and one end of the other two air supply branches is respectively connected to the two air outlets of another second quick-plug three-way joint.

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