阅读说明：本技术 一种防止排空气管离子交换树脂跑漏的装置及方法 (Device and method for preventing leakage of ion exchange resin of air exhaust pipe ) 是由 田文华 张长亮 范娟 拓凯 周虎 曾磊 田桂萍 于 2020-11-05 设计创作，主要内容包括：本发明公开了一种防止排空气管离子交换树脂跑漏的装置及方法,包括壳体、第一法兰、第二法兰、绕丝筛管、第三法兰、变径管及第四法兰；壳体为中空结构,第一法兰固定于壳体的顶部,第二法兰固定于壳体的底部,绕丝筛管位于壳体内,绕丝筛管的上端固定于第一法兰的底部,第三法兰固定于第一法兰的顶部,变径管的一端经第三法兰及第一法兰与绕丝筛管的顶部开口相连通,变径管的另一端经第四法兰与外界的排空气管相连通,该装置方法能够有效解决离子交换树脂从排空气管跑漏的问题。(The invention discloses a device and a method for preventing leakage of ion exchange resin of an exhaust pipe, wherein the device comprises a shell, a first flange, a second flange, a wire-wound sieve pipe, a third flange, a reducer pipe and a fourth flange; the shell is of a hollow structure, the first flange is fixed to the top of the shell, the second flange is fixed to the bottom of the shell, the wire-wrapping sieve tube is located in the shell, the upper end of the wire-wrapping sieve tube is fixed to the bottom of the first flange, the third flange is fixed to the top of the first flange, one end of the reducer pipe is communicated with an opening in the top of the wire-wrapping sieve tube through the third flange and the first flange, and the other end of the reducer pipe is communicated with an external air exhaust pipe through the fourth flange.)

1. A device for preventing ion exchange resin of an air exhaust pipe from leaking is characterized by comprising a shell (4), a first flange (3), a second flange (5), a wire winding sieve tube (6), a third flange (2), a reducer pipe and a fourth flange (1);

casing (4) are hollow structure, first flange (3) are fixed in the top of casing (4), second flange (5) are fixed in the bottom of casing (4), wire-wrapped screen pipe (6) are located casing (4), the upper end of wire-wrapped screen pipe (6) is fixed in the bottom of first flange (3), third flange (2) are fixed in the top of first flange (3), the one end of reducing pipe is linked together through the top opening of third flange (2) and first flange (3) and wire-wrapped screen pipe (6), the other end of reducing pipe is linked together through fourth flange (1) and external row's air pipe.

2. The apparatus for preventing leakage of an ion exchange resin of an exhaust duct according to claim 1, wherein the upper side of the housing (4) has a cylindrical structure and the lower side of the housing (4) has a tapered structure.

3. The apparatus for preventing ion exchange resin of an exhaust duct from leaking according to claim 1, wherein the wire-wrapped screen (6) has a filtering accuracy of 0.2 to 0.5 mm.

4. The apparatus for preventing leakage of ion exchange resin of exhaust air duct according to claim 1, wherein the cross section of the wire in the wire-wrapped screen pipe (6) is isosceles triangle, wherein the top angle of the isosceles triangle is toward the inside of the wire-wrapped screen pipe (6).

5. The apparatus for preventing leakage of ion exchange resin of exhaust air pipe according to claim 1, wherein the wire-wrapped screen pipe (6) is of a truncated cone structure with a sealed bottom.

6. The apparatus for preventing ion exchange resin of an exhaust pipe from leaking according to claim 1, wherein a gasket is provided between the wire-wrapped screen (6) and the first flange (3).

7. A method for preventing leakage of ion exchange resin of an exhaust pipe, according to claim 1, comprising the steps of:

the mixture of water flow, air and resin enters the shell (4) through the second flange (5), is filtered through the wire-wrapping sieve tube (6), then enters the reducer pipe through the first flange (3) and the second flange (5), and finally enters the external air exhaust pipe through the fourth flange (1), and the whole resin filtered and intercepted by the wire-wrapping sieve tube (6) is exhausted through the second flange (5) under the action of gravity.

Technical Field

The invention relates to a device and a method for preventing resin from leaking, in particular to a device and a method for preventing ion exchange resin from leaking from an air exhaust pipe.

Background

The ion exchanger body and the attached extracorporeal regeneration system are first filled with water before the apparatus is put into operation and the air is exhausted through the exhaust pipe. Since the specific gravity of the ion exchange resin is relatively light (the wet true density is generally 1-1.2 x 10)³Kg/m³) If the operation is not proper, the resin overflows from the air exhaust pipe, and although the amount of leaked resin is small in a single air exhaust, the amount of leaked resin is increased with the accumulation of time, which causes the following problems: (1) the resin is lost, so that the periodic water production of the ion exchanger is reduced; (2) the proportion of the anion resin and the cation resin is disordered, thereby influencing the effluent quality. The specific gravity of the female resin is lighter than that of the male resin, so that the amount of the female resin leaked is more than that of the male resin.

In order to solve the problems, most power plants adopt a method of installing a liquid level switch, but in order to facilitate maintenance, the installation position is at the lower part of an air exhaust pipe, so that resin can be exhausted to a ditch along the air exhaust pipe along with water flow, resin loss is caused, and remarkable loss can be caused by long-term accumulation.

The main reasons for leakage of the ion exchange resin from the air exhaust pipe are as follows: (1) when the ion exchanger body and the attached in-vitro regeneration system equipment are full of water after being filled with water, the liquid level switch has hysteresis in reaction, the control system receiving the liquid level switch signal gives out a valve action signal and the field valve action is completed for at least 2 seconds, and after the control system is full of water, a siphon condition is formed, resin can be discharged out of the equipment body along with water flow, so that a plurality of liters of resin can be discharged at one time, and resin loss is caused. (2) The pressure relief operation of the resin separation tower is abnormal, and the pressure relief time is too long, so that the resin is discharged from the exhaust pipe through the pressure relief valve along with water flow and air. (3) When a plurality of ion exchangers are put into operation simultaneously, the pressure of part of the ion exchangers is abnormal, backwashing layering occurs, and resin is discharged from the exhaust pipe along with water flow through the pressure release valve.

In summary, the prior art cannot effectively prevent the ion exchange resin from leaking from the air exhaust pipe.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a device and a method for preventing ion exchange resin in an exhaust air pipe from leaking, and the device and the method can effectively solve the problem that the ion exchange resin leaks from the exhaust air pipe.

In order to achieve the purpose, the device for preventing the leakage of the ion exchange resin of the air exhaust pipe comprises a shell, a first flange, a second flange, a wire-wound sieve pipe, a third flange, a reducer pipe and a fourth flange;

the casing is hollow structure, and first flange is fixed in the top of casing, and the second flange is fixed in the bottom of casing, and the wire wrap screen pipe is located the casing, and the upper end of wire wrap screen pipe is fixed in the bottom of first flange, and the third flange is fixed in the top of first flange, and the one end of reducing pipe is linked together through the top opening of third flange and first flange and wire wrap screen pipe, and the other end of reducing pipe is linked together through fourth flange and external row of air pipe.

The upside of casing is the cylinder structure, and the downside of casing is the toper structure.

The filtration precision of the wire-wrapped screen pipe is 0.2-0.5 mm.

The cross section of the wire winding in the wire winding screen pipe is an isosceles triangle, wherein the vertex angle of the isosceles triangle faces the inside of the wire winding screen pipe.

The wire-wrapped screen pipe is of a round table-shaped structure with a sealed bottom.

And a gasket is arranged between the wire-wrapped screen pipe and the first flange.

A method for preventing leakage of an ion exchange resin of an air exhaust pipe, comprising the steps of:

the mixture of water flow, air and resin enters the shell through the second flange, is filtered by the wire-wrapping sieve tube, then enters the reducer pipe through the first flange and the third flange, and finally enters the external air exhaust pipe through the fourth flange, and the complete resin filtered and intercepted by the wire-wrapping sieve tube is exhausted through the second flange under the action of gravity.

The invention has the following beneficial effects:

when the device and the method for preventing the ion exchange resin of the air exhaust pipe from leaking are operated specifically, a mixture of water flow, air and resin enters the shell through the second flange, is filtered through the wire-wound sieve pipe, then enters the externally-connected air exhaust pipe through the first flange, the third flange, the reducer pipe and the fourth flange, and the whole resin filtered and intercepted by the wire-wound sieve pipe is discharged through the second flange under the action of gravity, so that the problem that the ion exchange resin leaks from the air exhaust pipe is effectively solved.

Drawings

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

figure 2 is a schematic view of the wire-wrapped screen 6.

Wherein, 1 is a fourth flange, 2 is a third flange, 3 is a first flange, 4 is a shell, 5 is a second flange, and 6 is a wire-wrapped screen pipe.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings:

referring to fig. 1 and 2, the apparatus for preventing ion exchange resin leakage of an air exhaust pipe according to the present invention includes a housing 4, a first flange 3, a second flange 5, a wire-wrapped screen 6, a third flange 2, a reducer pipe, and a fourth flange 1; casing 4 is hollow structure, and first flange 3 is fixed in the top of casing 4, and second flange 5 is fixed in the bottom of casing 4, and wire wrap screen pipe 6 is located casing 4, and the upper end of wire wrap screen pipe 6 is fixed in the bottom of first flange 3, and third flange 2 is fixed in the top of first flange 3, and the one end of reducing pipe is linked together through the top opening of third flange 2 and first flange 3 with wire wrap screen pipe 6, and the other end of reducing pipe is linked together through fourth flange 1 and external row of air pipe.

The upper side of the shell 4 is of a cylindrical structure, and the lower side of the shell 4 is of a conical structure.

The filtration precision of the wire-wound sieve tube 6 is 0.2-0.5 mm; the cross section of the wire winding in the wire winding screen pipe 6 is an isosceles triangle, wherein the vertex angle of the isosceles triangle faces the inside of the wire winding screen pipe 6; the wire-wound sieve tube 6 is of a round table structure with a sealed bottom; a gasket is arranged between the wire-wrapped screen 6 and the first flange 3.

The method for preventing the leakage of the ion exchange resin of the air exhaust pipe comprises the following steps:

the mixture of water flow, air and resin enters the shell 4 through the second flange 5, is filtered through the wire-wrapping sieve tube 6, then enters the reducer pipe through the first flange 3 and the third flange 2, finally enters the external air exhaust pipe through the fourth flange 1, and the complete resin filtered and intercepted by the wire-wrapping sieve tube 6 is exhausted through the second flange 5 under the action of gravity.

Finally, the diameters of two ends of the wire-wound sieve tube 6 are different, the vertical section is trapezoidal, the end with the larger diameter is connected with the first flange 3, the end with the smaller diameter is sealed by a plane formed by spirally welding the wire-wound, the plane is provided with the same annular gap, and according to the research of the particle size distribution rule of the broken resin and the resin, the filtering precision of the wire-wound sieve tube 6 is determined to be 0.2-0.5mm, so that the effect of passing through the broken resin and intercepting the complete resin is achieved. The cross section of the wire winding sieve tube 6 is isosceles triangle, the vertex angle of the wire winding is inward to the inside of the wire winding sieve tube 6 to form a gap with a triangular cross section, and resin is not easy to block in the gap, so that the wire winding sieve tube has stable operation effect and longer service life; the material is 316L stainless steel or hastelloy with high acid and alkali resistance and strong water pressure impact resistance according to the operation condition.

Because the diameter of the air exhaust pipe is very small, the resin is easy to block, and the resin trapping effect is influenced, the sectional area of the channel of the resin leakage prevention device is designed to be 3-5 times of that of the air exhaust pipe. The connecting part of the reducer pipe and the air exhaust pipe is provided with a reducer pipe.

When the invention is filled with water, no water flow or air passes through the device, and the whole resin trapped at the wire-wrapped screen pipe 6 is backwashed under the action of gravity, and the trapped whole resin can be recovered without other conditions such as power supply and the like.