Explosion relief valve for chemical industry

Abstract

The utility model discloses a chemical explosion relief valve which comprises a valve seat, a liquid inlet is formed in one side of the valve seat, a pressure relief mechanism is installed on the surface of the liquid inlet, a filter pipe is installed on one side of the liquid inlet, a filter screen is installed in the filter pipe, and a collecting mechanism is installed at the bottom of the filter pipe. And the pressure relief mechanism comprises a pressure gauge mounted on the surface of the liquid inlet. According to the explosion relief valve for the chemical industry, through the arrangement of the collecting mechanism, the filter pipe and the filter screen, when impurities in a pipeline are cleaned, the impurities in a conveying medium can be blocked by the filter screen in the filter pipe, and the blocked impurities fall into the collecting pipe at the bottom under the influence of gravity; and finally, the impurities enter the collecting barrel to be uniformly stored, a worker only needs to open a sealing cover at the bottom of the collecting barrel from the outside, the impurities in the pipeline can be cleaned out, the pipeline does not need to be manually detached, and the cleaning efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of explosion -proof safety valve, concretely relates to a chemical explosion -proof safety valve. BACKGROUND

[0002] Chemical industry as the important pillar of modern industry, involves numerous complex chemical reactions and process flow, production process often involves high temperature, high pressure, strong corrosion and flammable and explosive dangerous chemicals. For example in the field of petroleum chemical industry, catalytic cracking device in the oil refining process needs to run under high temperature (about 500 DEG C) and certain pressure (several megapascal), and the crude oil and its distillate mostly belong to flammable and explosive substances, in the chlor alkali chemical industry, the production process will produce strong corrosive chlorine and sodium hydroxide and other chemicals. These special production conditions make the chemical production device face potential safety risk all the time, once the accident occurs, often accompanied by explosion, fire, toxic substance leakage and other serious consequences, not only will cause huge economic losses, also can bring catastrophic influence to personnel life safety and ecological environment, the most commonly used equipment is explosion -proof safety valve.

[0003] The existing explosion -proof safety valve for chemical industry when using, usually install filter screen inside, the filter screen needs to manually dismount the equipment to replace and clean the filter screen inside after long time use, the process is more cumbersome, time -consuming and labor -intensive, it is not easy to quickly remove the impurities inside the pipeline, therefore, put forward a kind of explosion -proof safety valve for chemical industry.

[0004] In the announcement number CN216520129U disclosed a kind of explosion -proof rupture safety valve for chemical industry, although, the explosion -proof rupture safety valve for chemical industry, including valve body and setting on the valve body reinforcing device, reinforcing device includes the reinforcing frame and first clamping portion setting on the one side of valve body, first clamping portion includes first arc clamp and second arc clamp;First arc clamp and second arc clamp are symmetrically arranged, first arc clamp is provided with installation groove, second arc clamp is provided with installation protrusion compatible with installation groove;First arc clamp and installation protrusion are provided with through long hole, long shaft is arranged in through long hole, screw rod is arranged on the upper end of reinforcing frame and extends downward to long shaft.The utility model rotates first arc clamp and second arc clamp to form clamping state to the pipe of discharge port or feed port of valve body, by arranging long shaft in through long hole, the two ends of long shaft are clamped to valve body by screw rod, the pipe of discharge port and feed port of valve body is clamped and reinforced simultaneously, reduce the difficulty when valve body is manufactured, reduce unnecessary waste.

[0005] The above patent can realize the clamping state of the first arc-shaped clamp and the second arc-shaped clamp to the pipeline of the discharge port or the feed port of the valve body, the long shaft is arranged in the through hole, and the two ends of the long shaft are pushed to the valve body through the screw rod, so that the pipeline of the discharge port and the feed port of the valve body is clamped and reinforced at the same time, the difficulty of valve manufacturing is reduced, and unnecessary waste is reduced. Utility model content

[0006] The technical problems to be solved by the utility model are as follows: provide a chemical anti-explosion safety valve which is high in practicability and can be operated simply and has a simple structure, and the problem that the filter screen needs to be manually disassembled and replaced and cleaned after long-time use, the process is relatively complicated, time-consuming and labor-consuming, and impurities in the pipeline are not easy to clean quickly is solved.

[0007] The purpose of the utility model can be realized through the following technical schemes.

[0008] A chemical anti-explosion safety valve, including the valve seat, the side of the valve seat is installed with the liquid inlet, the surface of the liquid inlet is installed with the pressure relief mechanism, one side of the liquid inlet is installed with the filter pipe, the inside of the filter pipe is installed with the filter screen, the bottom of the filter pipe is installed with the collection mechanism, the pressure relief mechanism includes the pressure gauge installed on the surface of the liquid inlet, one side of the pressure gauge is electrically connected with the PLC controller through the power line, one side of the PLC controller is electrically connected with the electric control valve through the power line, the collection mechanism includes the collection pipe installed at the bottom of the filter pipe, the end of the collection pipe is provided with the collection cylinder, the surface of the collection cylinder is provided with the threaded hole, the threaded hole is internally and threadedly connected with the sealing cover.

[0009] As a further scheme of the utility model: one side of the electric control valve is installed with the shunt pipe, the top of the shunt pipe is installed at the bottom of the liquid inlet, and the shunt pipe is convenient for pressure relief.

[0010] As a further scheme of the utility model: the back of the filter pipe is installed with the extension pipe, one side of the extension pipe is installed with the flange connecting piece A, and the flange connecting piece A is convenient for connecting external equipment.

[0011] As a further scheme of the utility model: the bottom of the valve seat is installed with the liquid outlet, one side of the liquid outlet is connected to the bottom of the shunt pipe in a penetrating manner, and the liquid outlet is convenient for liquid outlet.

[0012] As a further scheme of the utility model: the bottom of the liquid outlet is installed with the flange connecting piece B, the surface of the flange connecting piece B is installed with a plurality of positioning holes, and the positioning holes are convenient for fixing the flange connecting piece B.

[0013] As a further scheme of the utility model: four reinforcing blocks are fixedly connected to the bottom of the valve seat, the back of the reinforcing block is fixedly connected to the upper surface of the liquid outlet, and the reinforcing block facilitates improvement of the strength of the valve seat.

[0014] As a further scheme of the utility model: an observation window is arranged on the surface of the collecting cylinder, and the material of the observation window is acrylic, so that the inside of the collecting cylinder can be observed.

[0015] The utility model has the advantages of:

[0016] 1. When the impurities in the pipeline are cleaned, the impurities in the conveying medium are blocked by the filter screen in the filter pipe, the blocked impurities fall into the collecting pipe at the bottom under the action of gravity, and finally enter the collecting cylinder for unified storage, so that the impurities in the pipeline can be cleaned out by only opening the sealing cover at the bottom of the collecting cylinder from the outside, without manual disassembly of the pipeline, and the cleaning efficiency is improved.

[0017] 2. When the medium is conveyed, the pressure of the liquid inlet top-mounted pressure gauge is detected, when the pressure is too large, the signal is transmitted to the PLC controller on one side, and then the PLC controller controls the electric control valve on one side to open, so that the conveying medium in the liquid inlet enters the liquid outlet on one side from the inside of the bottom shunt pipe, thereby achieving the effect of automatic pressure relief, avoiding pipeline rupture and equipment damage caused by excessive pressure, and preventing safety accidents caused by leakage of the conveying medium. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be further described below in combination with the drawings.

[0019] Figure 1 It is the whole structure schematic view of the utility model;

[0020] Figure 2 It is the pressure relief mechanism structure schematic view of the utility model;

[0021] Figure 3 It is the collecting mechanism structure schematic view of the utility model;

[0022] Figure 4 It is the valve seat structure schematic view of the utility model.

[0023] In the diagram: 1. Valve seat; 2. Liquid inlet; 3. Pressure relief mechanism; 301. Pressure gauge; 302. PLC controller; 303. Solenoid valve; 4. Filter tube; 5. Filter screen; 6. Collection mechanism; 601. Collection tube; 602. Collection cylinder; 603. Sealing cover; 7. Diverter tube; 8. Extension tube; 9. Flange connector A; 10. Liquid outlet; 11. Flange connector B; 12. Reinforcing block; 13. Observation window. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1-4 As shown, a chemical explosion-proof safety valve includes a valve seat 1, with an inlet 2 installed on one side of the valve seat 1. A pressure relief mechanism 3 is installed on the surface of the inlet 2. Through the pressure relief mechanism 3, when the medium is being transported, a pressure gauge 301 installed on the top of the inlet 2 detects the pressure. When the pressure is too high, a signal is transmitted to a PLC controller 302 on one side. The PLC controller 302 then controls an electrically controlled valve 303 on one side to open, allowing the transported medium in the inlet 2 to enter the outlet 10 on one side from the bottom of the diversion pipe 7, thus achieving automatic pressure relief. This prevents pipeline rupture and equipment damage due to excessive pressure and avoids safety accidents caused by leakage of the transported medium. A filter pipe 4 is installed on one side of the inlet 2, with a filter screen 5 installed inside. A collection mechanism 6 is installed at the bottom of the filter pipe 4. Through the arrangement of the collection mechanism 6, the filter pipe 4, and the filter screen 5, the internal pressure of the pipeline is reduced. When cleaning impurities, the impurities in the conveying medium are blocked by the filter screen 5 inside the filter tube 4. The blocked impurities fall into the collection tube 601 at the bottom due to gravity, and finally enter the collection cylinder 602 for unified storage. The staff only needs to open the sealing cover 603 at the bottom of the collection cylinder 602 from the outside to clean out the impurities inside the pipe. There is no need to manually disassemble the pipe, which improves the cleaning efficiency. The pressure relief mechanism 3 includes a pressure gauge 301 installed on the surface of the liquid inlet 2. One side of the pressure gauge 301 is electrically connected to a PLC controller 302 through a power cord. One side of the PLC controller 302 is electrically connected to an electric control valve 303 through a power cord. The collection mechanism 6 includes a collection tube 601 installed at the bottom of the filter tube 4. The end of the collection tube 601 is provided with a collection cylinder 602. The surface of the collection cylinder 602 is provided with a threaded hole, and the inside of the threaded hole is threaded with a sealing cover 603.

[0026] likeFigure 1 As shown, a diversion pipe 7 is installed on one side of the solenoid valve 303. The top of the diversion pipe 7 is installed at the bottom of the liquid inlet 2. The diversion pipe 7 facilitates pressure relief.

[0027] like Figure 1 As shown, an extension tube 8 is installed on the back of the filter tube 4, and a flange connector A9 is installed on one side of the extension tube 8. The flange connector A9 facilitates the connection of external equipment.

[0028] like Figure 4 As shown, a liquid outlet 10 is installed at the bottom of the valve seat 1, and one side of the liquid outlet 10 is connected to the bottom of the diversion pipe 7, so that the liquid outlet 10 can facilitate liquid discharge.

[0029] like Figure 4 As shown, a flange connector B11 is installed at the bottom of the outlet 10. Several positioning holes are installed on the surface of the flange connector B11, which facilitates fixing the flange connector B11.

[0030] like Figure 4 As shown, four reinforcing blocks 12 are fixedly connected to the bottom of the valve seat 1. The back of the reinforcing blocks 12 is fixedly connected to the upper surface of the outlet 10. The reinforcing blocks 12 help to improve the strength of the valve seat 1.

[0031] like Figure 3 As shown, an observation window 13 is provided on the surface of the collection cylinder 602. The observation window 13 is made of acrylic and is convenient for observing the internal condition of the collection cylinder 602.

[0032] The above parameters and models can be selected according to actual needs.

[0033] The working principle of this utility model is as follows: When cleaning impurities inside the pipeline, the impurities in the conveying medium will be blocked by the filter screen 5 inside the filter pipe 4. The blocked impurities will fall into the collection pipe 601 at the bottom due to gravity, and finally enter the collection cylinder 602 for unified storage.

[0034] When the medium is being transported, the pressure is detected by the pressure gauge 301 installed on the top of the inlet 2. When the pressure is too high, the signal is transmitted to the PLC controller 302 on one side. The PLC controller 302 then controls the electric valve 303 on one side to open, so that the medium in the inlet 2 enters the outlet 10 on one side from the bottom diversion pipe 7.

[0035] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A chemical explosion-proof safety valve, comprising a valve seat (1), characterized in that: A liquid inlet (2) is installed on one side of the valve seat (1), a pressure relief mechanism (3) is installed on the surface of the liquid inlet (2), a filter tube (4) is installed on one side of the liquid inlet (2), a filter screen (5) is installed inside the filter tube (4), and a collection mechanism (6) is installed at the bottom of the filter tube (4). The pressure relief mechanism (3) includes a pressure gauge (301) installed on the surface of the liquid inlet (2). One side of the pressure gauge (301) is electrically connected to a PLC controller (302) via a power line. One side of the PLC controller (302) is electrically connected to an electric control valve (303) via a power line. The collection mechanism (6) includes a collection tube (601) installed at the bottom of the filter tube (4). A collection cylinder (602) is provided at the end of the collection tube (601). A threaded hole is provided on the surface of the collection cylinder (602). A sealing cap (603) is threaded inside the threaded hole.

2. The explosion-proof safety valve for chemical applications according to claim 1, characterized in that, A diversion pipe (7) is installed on one side of the electrically controlled valve (303), and the top of the diversion pipe (7) is installed at the bottom of the liquid inlet (2).

3. The explosion-proof safety valve for chemical applications according to claim 1, characterized in that, An extension tube (8) is installed on the back of the filter tube (4), and a flange connector A (9) is installed on one side of the extension tube (8).

4. The explosion-proof safety valve for chemical applications according to claim 1, characterized in that, The valve seat (1) has an outlet (10) installed at its bottom, and one side of the outlet (10) is connected to the bottom of the diversion pipe (7).

5. The explosion-proof safety valve for chemical applications according to claim 4, characterized in that, A flange connector B (11) is installed at the bottom of the outlet (10), and a number of positioning holes are installed on the surface of the flange connector B (11).

6. The explosion-proof safety valve for chemical applications according to claim 1, characterized in that, The bottom of the valve seat (1) is fixedly connected to four reinforcing blocks (12), and the back of the reinforcing blocks (12) is fixedly connected to the upper surface of the liquid outlet (10).

7. The explosion-proof safety valve for chemical applications according to claim 1, characterized in that, The surface of the collection tube (602) is provided with an observation window (13), and the observation window (13) is made of acrylic.

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