CN211117815U

CN211117815U - Safe pressure relief protection device of urea dissolving tank

Info

Publication number: CN211117815U
Application number: CN201921668362.2U
Authority: CN
Inventors: 刘光玉
Original assignee: Chengdu Xinli Pharmaceutical Chemical Equipment Co ltd
Current assignee: Chengdu Xinli Pharmaceutical Chemical Equipment Co ltd
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-07-28
Anticipated expiration: 2029-10-08

Abstract

The utility model discloses a urea dissolving tank's safe pressure release protection device, including relief valve and clean portion, clean portion comprises two-way exhaust tank, neutralization tank and two-position three-way valve, two-way exhaust tank's top and relief valve intercommunication, and its bottom is through two-position three-way valve and neutralization tank intercommunication. The utility model discloses in, two-way exhaust can is by the vertical jar of body, piston disc and spring constitute, at the top switch-on relief valve of the vertical jar of body, bottom switch-on two-position three-way valve, pipeline and outside urea dissolving tank intercommunication are passed through to a gas port of two-position three-way valve, the piston disc is located the internal sealed cooperation of vertical jar, and be sliding fit down from top to bottom, therefore, during the pressure release, corrosive gas in the urea dissolving tank promotes the piston disc and shifts up after getting into the vertical jar is internal, the gas compression on piston disc upper portion, it opens to promote the relief valve, the clean air of discharging, avoid the relief valve contact corrosive.

Description

Safe pressure relief protection device of urea dissolving tank

Technical Field

The utility model relates to a reation kettle pressure release protection technical field especially relates to a safe pressure release protection device of urea dissolving tank.

Background

The reaction kettle is widely applied to pressure vessels for petroleum, chemical engineering, rubber, pesticides, dyes, medicines and foods, and is used for completing technological processes such as vulcanization, nitration, hydrogenation, alkylation, polymerization, condensation and the like, such as a reactor, a reaction kettle, a decomposition kettle, a polymerization kettle and the like; the material is generally carbon manganese steel, stainless steel, zirconium, nickel-based (Hastelloy, Monel, Inconel) alloy and other composite materials.

At present, to the reation kettle of urea dissolving tank class, the high-pressure environment of high temperature has in the jar in the course of working, prevents pressure too high outward, sets up the relief valve and carries out the pressure release protection through pipeline and dissolving tank usually, but the pressure release protection of this kind of structure has following not enoughly: 1. when the pressure relief valve is used for relieving pressure, the discharged air contains ammonia components decomposed by urea, and the ammonia is corrosive, so that the corrosion damage to the pressure relief valve can be accelerated; 2. the gas discharged by the pressure release valve is irritant and is generally conveyed to the external neutralizing liquid through a pipeline, but the gas flow discharged by the hydraulic valve has high pressure and can impact a pressure release pipeline connected with the dissolving tank, so that the abrasion and impact damage of the pipeline are accelerated.

Therefore, the utility model provides a safe pressure release protection device of urea dissolving tank.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the traditional adoption relief valve and directly connect with urea dissolving tank class reation kettle and carry out the pressure release protection when, the corrosive gas through the relief valve damages with higher speed the relief valve and passes through the in-process that relief valve exhaust high-pressure gas passes through pipeline transmission to outside neutralization solution, and high-pressure gas leads to the fact the impact to the pressure release pipeline that can be connected with the dissolving tank, and then the wearing and tearing of pipeline and the problem of assaulting the destruction with higher speed, and the safe pressure release protection device of a urea dissolving tank who provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a urea dissolving tank's safe pressure release protection device, includes relief valve and clean portion, clean portion comprises two-way exhaust tank, neutralization tank and two-position three-way valve, the top and the relief valve intercommunication of two-way exhaust tank, and its bottom is through two-position three-way valve and neutralization tank intercommunication, two-way exhaust tank comprises vertical jar of body, piston disc and spring setting are internal at vertical jar.

As a further description of the above technical solution:

the top welding of vertical jar of body has the blast pipe with the relief valve intercommunication, and its bottom welding has the breather pipe with two-position three-way valve intercommunication.

As a further description of the above technical solution:

the piston disc and the inner surface wall of the vertical tank body are sealed and are in up-down sliding fit.

As a further description of the above technical solution:

the bottom of the spring is fixedly arranged on the upper end face of the piston disc, the top of the spring is connected with the top of the vertical tank body, and the top of the vertical tank body is screwed with the one-way valve.

As a further description of the above technical solution:

and the top of the neutralization tank is provided with an air inlet pipe which is connected with one of the air passages of the two-position three-way valve through a pipeline.

As a further description of the above technical solution:

the top of the vertical tank body is also screwed with a pressure gauge.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, two-way exhaust can is by the vertical jar of body, piston disc and spring constitute, at the top switch-on relief valve of the vertical jar of body, bottom switch-on two-position three-way valve, pipeline and outside urea dissolving tank intercommunication are passed through to a gas port of two-position three-way valve, the piston disc is located the internal sealed cooperation of vertical jar, and be sliding fit down from top to bottom, therefore, during the pressure release, corrosive gas in the urea dissolving tank promotes the piston disc and shifts up after getting into the vertical jar is internal, the gas compression on piston disc upper portion, it opens to promote the relief valve, the clean air of discharging, avoid the relief valve contact corrosive.

2. The utility model discloses in, the top of the vertical jar of body has closed the check valve soon, another gas port passes through pipeline and neutralization tank intercommunication on the two-position three-way valve, the back is accomplished in the pressure release, the passageway of the vertical jar of body and urea dissolving tank intercommunication is closed in the two-position three-way valve action, open simultaneously and the passageway of neutralization tank intercommunication, and the spring that lies in piston dish upper portion compression utilizes tension to promote the piston dish and moves down, outside clean air passes through the check valve and gets into the vertical jar of body, by this the corrosive gas inflation of piston dish bottom is directly carried to the neutralization tank in by the extrusion simultaneously, avoid causing the impact to urea dissolving tank connecting line.

Drawings

Fig. 1 shows a schematic structural diagram provided according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram illustrating a two-way exhaust tank and a pressure gauge provided according to an embodiment of the present invention;

fig. 3 shows a schematic structural diagram of a vertical tank body provided according to an embodiment of the present invention.

Illustration of the drawings:

1. a pressure relief valve; 2. a cleaning part; 21. a bi-directional exhaust tank; 211. a vertical tank body; 2111. an exhaust pipe; 2112. a breather pipe; 212. a piston disc; 213. a spring; 214. a one-way valve; 22. a neutralization tank; 221. an air inlet pipe; 23. a two-position three-way valve; 3. and a pressure gauge.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a urea dissolving tank's safe pressure release protection device, including relief valve 1 and clean portion 2, clean portion 2 is by two-way exhaust can 21, neutralization tank 22 and two-position three-way valve 23 constitute, two-way exhaust can 21's top and relief valve 1 intercommunication, and its bottom is through two-position three-way valve 23 and neutralization tank 22 intercommunication, two-way exhaust can 21 comprises vertical jar body 211, piston disc 212 and spring 213 set up in vertical jar body 211, two-way exhaust can 21 top exhaust clean gas, bottom exhaust corrosive gas, exhaust corrosive gas gets into neutralization tank 22 through the pipeline and neutralizes.

Specifically, as shown in fig. 3, the top of the vertical tank 211 is welded with an exhaust pipe 2111 communicated with the pressure release valve 1, and the bottom of the vertical tank is welded with a vent pipe 2112 communicated with the two-position three-way valve 23, and both the pressure release valve 1 and the two-position three-way valve 23 can be correspondingly connected with the exhaust pipe 2111 and the vent pipe 2112 through flange structures, so that the structure is simple and the production is convenient.

Specifically, as shown in fig. 2, the piston disc 212 is in a sealing and up-and-down sliding fit with the inner surface wall of the vertical tank 211, and a common sealing sleeve is arranged around the piston disc 212, so that the vertical tank 211 is divided into a clean space and a corrosion space by the piston disc 212.

Specifically, as shown in fig. 2, the bottom of the spring 213 is fixedly disposed on the upper end surface of the piston disc 212, the top of the spring is connected to the top of the vertical tank 211, the top of the vertical tank 211 is screwed with a check valve 214, and the check valve 214 only allows external air to enter the vertical tank 211.

Specifically, as shown in fig. 1, the top of the neutralization tank 22 is welded with an air inlet pipe 221, the air inlet pipe 221 is connected with one of the air passages of the two-position three-way valve 23 through a pipeline, and one of the three air ports of the two-position three-way valve 23 is alternatively communicated with the other two air ports through a valve.

Specifically, as shown in fig. 2, a pressure gauge 3 is screwed on the top of the vertical tank 211, so as to facilitate detection of the pressure inside the vertical tank 211.

The working principle is as follows: when the device is used, firstly, one air port of the two-position three-way valve is communicated with the top of an external urea dissolving tank through a pipeline, the two-position three-way valve 23 is in an initial state to keep the urea dissolving tank and the bottom of the vertical tank body 211 communicated, when the pressure in the urea dissolving tank is increased and needs to be relieved, the air at the bottom of the piston disc 212 is compressed to push the piston disc 212 to move upwards, the clean air at the upper part of the piston disc 212 is increased and the relief valve 1 is opened to relieve the pressure, after the pressure relief is finished, the space at the bottom of the piston disc in the vertical tank body 211 is increased, the spring 213 is compressed, at the moment, the two-position three-way valve is controlled to disconnect the vertical tank body 211 from the urea dissolving tank and communicate with the neutralization tank 22, therefore, the air at the lower part of the piston disc 212 is expanded and is conveyed into the neutralization tank 22 through the, the two-position, three-way valve 23 is then reset for the next pressure relief cycle.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a urea dissolving tank's safe pressure release protection device, includes relief valve (1) and clean portion (2), its characterized in that, clean portion (2) comprise two-way exhaust can (21), neutralization jar (22) and two-position three-way valve (23), the top and relief valve (1) intercommunication of two-way exhaust can (21), and its bottom is through two-position three-way valve (23) and neutralization jar (22) intercommunication, two-way exhaust can (21) comprise vertical jar body (211), piston disc (212) and spring (213) set up in vertical jar body (211).

2. The safety pressure relief protection device for the urea dissolving tank as claimed in claim 1, wherein the top of the vertical tank body (211) is welded with an exhaust pipe (2111) communicated with the pressure relief valve (1), and the bottom is welded with a vent pipe (2112) communicated with a two-position three-way valve (23).

3. A safety pressure relief protection device for a urea dissolving tank according to claim 2, wherein said piston disc (212) and the inner surface wall of the vertical tank body (211) are sealed and in up-and-down sliding fit.

4. The safety pressure relief protection device for the urea dissolving tank as claimed in claim 3, wherein the bottom of the spring (213) is fixedly arranged on the upper end surface of the piston disc (212), the top of the spring is connected with the inner top of the vertical tank body (211), and the top of the vertical tank body (211) is screwed with the one-way valve (214).

5. A safety pressure relief protection device for a urea dissolving tank according to claim 4, characterized in that the top of said neutralization tank (22) is welded with an air inlet pipe (221), said air inlet pipe (221) is connected with one of the air passages of the two-position three-way valve (23) through a pipeline.

6. A safety pressure relief protection device for a urea dissolving tank according to claim 4, characterized in that the top of the vertical tank body (211) is screwed with a pressure gauge (3).