Online blowback device of orifice plate flowmeter

Abstract

The utility model discloses an on-line blowback device for an orifice plate flowmeter. The on-line blowback device comprises a flowmeter main body, connecting pipes are installed at the two ends of the flow meter body, a back flushing mechanism is installed at the bottom of the connecting pipe at one end of the flow meter body, a treatment box is installed at the bottom of the connecting pipe at the other end of the flow meter body, a filter screen is installed in the treatment box, and a treatment mechanism is installed on the side, close to the filter screen, in the treatment box. The treatment mechanism comprises a connecting pipe, a control valve, an air inducing pipe and a blowing pipe, and the connecting pipe is mounted on one side of the reverse blowing mechanism; according to the utility model, the connecting pipe, the control valve, the air inducing pipe and the blowdown pipe are matched for use, and the control valve on the outer side of the connecting pipe is opened, so that the blowback mechanism conveys air into the air inducing pipe through the connecting pipe, and when air is blown out from the inside of the blowdown pipe, impurities separated and adhered on the filter screen can be directly blown down and then discharged; therefore, later treatment by personnel is not needed, and use by the personnel is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of orifice plate flowmeters, and particularly relates to an on-line backwashing device for an orifice plate flowmeter. Background Technique

[0002] An orifice plate flowmeter is a high-range ratio differential pressure flow device composed of a standard orifice plate and a multi-parameter differential pressure transmitter, which can measure the flow of gases, steam, liquids, etc. It is widely used in the process control and measurement in fields such as petroleum, chemical industry, metallurgy, electric power, heating, and water supply. The orifice plate flowmeter can measure the size of the fluid flow by measuring the differential pressure. In actual use, a backwashing device is required to clean the dust accumulated in the pressure-taking pipe of the flowmeter to prevent blockage and inaccurate flow detection.

[0003] By adopting the backwashing method to achieve the effect of treating the adhered impurities or foreign matters on the flowmeter, when the impurities on the flowmeter are blown off by this method, the impurities will be concentrated and collected inside the collection box, so that personnel still need to process them later, which is not conducive to the use of personnel. Content of the Utility Model

[0004] The purpose of the utility model is to provide an on-line backwashing device for an orifice plate flowmeter, so as to solve the problem that when the backwashing method is adopted to achieve the effect of treating the adhered impurities or foreign matters on the flowmeter, when the impurities on the flowmeter are blown off by this method, the impurities will be concentrated and collected inside the collection box, so that personnel still need to process them later, which is not conducive to the use of personnel as mentioned in the above background technique.

[0005] The utility model provides the following technical solution: an on-line backwashing device for an orifice plate flowmeter, including a flowmeter main body; connection pipes are installed at both ends of the flowmeter main body, a backwashing mechanism is installed at the bottom of the connection pipe at one end of the flowmeter main body, a treatment box is installed at the bottom of the connection pipe at the other end of the flowmeter main body, a filter screen is installed inside the treatment box, and a treatment mechanism is installed on one side of the treatment box close to the filter screen;

[0006] The treatment mechanism includes a connecting pipe, a control valve, an air guiding pipe, and a blowing pipe. A connecting pipe is installed on one side of the backwashing mechanism, two groups of control valves are installed on the outer side of the connecting pipe, an air guiding pipe is installed on one side of the treatment box close to the filter screen, and a blowing pipe is installed at the bottom of the air guiding pipe.

[0007] Preferably, a heating roller is installed inside the connecting pipe.

[0008] Preferably, a conveying pipe is installed at the top of the treatment mechanism, and a valve II is installed on the outer side of the conveying pipe.

[0009] Preferably, a flow meter is installed at the bottom of the outer side of the delivery pipe near the second valve.

[0010] Preferably, an exhaust hole is provided on the side surface of the treatment box, and a discharge pipe is installed at the bottom of the treatment box.

[0011] Preferably, the backflush mechanism includes a blowpipe, a first valve, and a nitrogen tank. A blowpipe is installed at the bottom of the connecting pipe at one end of the flowmeter main body, a first valve is installed on the outer side of the blowpipe, and a nitrogen tank is installed at the end of the blowpipe away from the connecting pipe.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. By using the connecting pipe, control valve, air guiding pipe, and purging pipe in cooperation, the present utility model opens the control valve on the outer side of the connecting pipe, enabling the backflush mechanism to transport gas through the connecting pipe into the air guiding pipe. When the air blows out from the purging pipe, it can directly blow and remove the impurities adhering to the filter screen and then discharge them, so that there is no need for personnel to process them later, which is beneficial for personnel to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the front three-dimensional structure schematic diagram of the present utility model;

[0015] Figure 2 is the side three-dimensional structure schematic diagram of the present utility model;

[0016] Figure 3 is the partial internal structure schematic diagram of the treatment box of the present utility model;

[0017] Figure 4 is the partial structure schematic diagram of the treatment mechanism of the present utility model.

[0018] In the figure: 1, flowmeter main body; 2, connecting pipe; 3, backflush mechanism; 301, blowpipe; 302, first valve; 303, nitrogen tank; 4, treatment mechanism; 401, connecting pipe; 402, control valve; 403, air guiding pipe; 404, purging pipe; 5, delivery pipe; 501, second valve; 6, flow meter; 7, treatment box; 701, filter screen; 702, exhaust hole; 703, discharge pipe; 8, heating roller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0022] The technical solution of the present utility model will be further elaborated in detail below in conjunction with the specification drawings and specific embodiments;

[0023] Embodiment 1:

[0024] An on-line backwashing device for an orifice plate flowmeter provided in the present application includes a flowmeter main body 1; connecting pipes 2 are installed at both ends of the flowmeter main body 1, a backwashing mechanism 3 is installed at the bottom of the connecting pipe 2 at one end of the flowmeter main body 1, a processing box 7 is installed at the bottom of the connecting pipe 2 at the other end of the flowmeter main body 1, a filter screen 701 is installed inside the processing box 7, and a processing mechanism 4 is installed on one side of the processing box 7 close to the filter screen 701;

[0025] The processing mechanism 4 includes a connecting pipe 401, a control valve 402, an air guiding pipe 403 and a blowing pipe 404. A connecting pipe 401 is installed on one side of the backwashing mechanism 3, two groups of control valves 402 are installed on the outer side of the connecting pipe 401, an air guiding pipe 403 is installed on one side of the processing box 7 close to the filter screen 701, and a blowing pipe 404 is installed at the bottom of the air guiding pipe 403;

[0026] Specifically, as Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, the backflush mechanism 3 is used to blow off the impurities adhering to the flowmeter main body 1. The impurities blown off can be collected through the treatment box 7. The impurities collected inside the treatment box 7 can be separated through the filter screen 701. The treatment mechanism 4 is used to treat the impurities adhering to the filter screen 701. One side of the backflush mechanism 3 is connected with an air guide pipe 403 through a connecting pipe 401. The inside of the air guide pipe 403 is in a cavity state. A plurality of blow-off pipes 404 are equidistantly arranged at the bottom of the air guide pipe 403, and there are a plurality of air outlets inside the blow-off pipes 404. The worker opens the control valve 402 outside the connecting pipe 401, so that the backflush mechanism 3 transports the gas to the inside of the air guide pipe 403 through the connecting pipe 401. When the wind blows out from the inside of the blow-off pipes 404, the impurities separated and adhered to the filter screen 701 can be directly blown off and then discharged, so that no further post-treatment by personnel is required.

[0027] Furthermore, a heating roller 8 is installed inside the connecting pipe 401;

[0028] Specifically, as Figure 1 shown, in order to improve the treatment effect of the device on the filter screen 701, the gas temperature can be increased through the heating roller 8, and the filtered impurities adhering to the filter screen 701 can be better blown off.

[0029] Furthermore, a delivery pipe 5 is installed at the top of the treatment mechanism 4, and a second valve 501 is installed on the outside of the delivery pipe 5;

[0030] Specifically, as Figure 1 shown, in order to transport the impurities after backflushing on the flowmeter main body 1, the worker opens the second valve 501, so that the impurities blown off inside the flowmeter main body 1 can be transported to the inside of the treatment box 7 through the delivery pipe 5 for collection.

[0031] Furthermore, a flow meter 6 is installed at the bottom of the outside of the delivery pipe 5 near the second valve 501;

[0032] Specifically, as Figure 1 shown, in order to monitor the blowing-off flow velocity, the flow velocity inside the delivery pipe 5 can be monitored through the flow meter 6, so as to avoid the backflush mechanism 3 malfunctioning or the inside of the connecting pipe 2 being blocked, and being unable to achieve the blowing-off treatment effect on the flowmeter main body 1.

[0033] Furthermore, an exhaust hole 702 is provided on the side of the treatment box 7, and a discharge pipe 703 is installed at the bottom of the treatment box 7;

[0034] Specifically, as Figure 2 and Figure 3As shown, in order to discharge the impurities cleaned inside the processing box 7, when the blown gas is transported into the processing box 7 for separation, the gas will be discharged through the exhaust holes 702, while the filtered impurities will be discharged through the discharge pipe 703.

[0035] Furthermore, the back-blowing mechanism 3 includes a blowing pipe 301, a first valve 302, and a nitrogen gas tank 303. One end of the flowmeter main body 1 is connected to the bottom of the connecting pipe 2, and the blowing pipe 301 is installed. The first valve 302 is installed on the outer side of the blowing pipe 301, and the nitrogen gas tank 303 is installed at the end of the blowing pipe 301 away from the connecting pipe 2.

[0036] Specifically, as Figure 1 shown, in order to blow and remove the impurities on the flowmeter main body 1, the nitrogen gas tank 303 is connected to the connecting pipe 2 through the blowing pipe 301. By opening the first valve 302 on the outer side of the blowing pipe 301, the nitrogen gas tank 303 transports the gas through the inside of the connecting pipe 2, and then blows and removes the impurities on the flowmeter main body 1.

[0037] Working principle: By opening the first valve 302 and the second valve 501, and then making the nitrogen gas tank 303 work to eject gas, the impurities on the flowmeter main body 1 are back-blown and removed. The blown impurities will be transported into the processing box 7 through the conveying pipe 5. At this time, the impurities collected inside the processing box 7 can be separated by the filter net 701, and the separated gas will be discharged through the exhaust holes 702.

[0038] Finally, it should be noted that the above specific implementation manners are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified and equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. An online backflush device for an orifice flowmeter, comprising a flowmeter body (1); characterized in that: Connecting pipes (2) are installed at both ends of the flow meter body (1); a back-blowing mechanism (3) is installed at the bottom of the connecting pipe (2) at one end of the flow meter body (1); a processing box (7) is installed at the bottom of the connecting pipe (2) at the other end of the flow meter body (1); a filter screen (701) is installed inside the processing box (7); and a processing mechanism (4) is installed on one side of the processing box (7) close to the filter screen (701); The processing mechanism (4) comprises a connecting pipe (401), a control valve (402), an air duct (403) and a blow-off pipe (404); a connecting pipe (401) is installed on one side of the back-blowing mechanism (3); two groups of control valves (402) are installed on the outside of the connecting pipe (401); an air duct (403) is installed on one side of the processing box (7) near the filter screen (701); and a blow-off pipe (404) is installed at the bottom of the air duct (403).

2. The orifice flowmeter online backflush device according to claim 1, characterized in that: A heating roller (8) is installed inside the connecting pipe (401).

3. The orifice flowmeter online backflush device according to claim 1, characterized in that: A delivery pipe (5) is installed on the top of the processing mechanism (4), and a second valve (501) is installed on the outer side of the delivery pipe (5).

4. The orifice flowmeter online backflush device according to claim 3, characterized in that: A flow meter (6) is installed on the outer side of the delivery pipe (5) near the bottom of the second valve (501).

5. The orifice flowmeter online backflush device according to claim 1, characterized in that: An exhaust hole (702) is provided on the side of the processing box (7), and a discharge pipe (703) is installed at the bottom of the processing box (7).

6. The orifice flowmeter online backflush device according to claim 1, characterized in that: The back-blowing mechanism (3) comprises an air blowing pipe (301), a valve one (302) and a nitrogen tank (303); the air blowing pipe (301) is installed at the bottom of the connecting pipe (2) at one end of the flow meter body (1); the valve one (302) is installed on the outside of the air blowing pipe (301); and the nitrogen tank (303) is installed at one end of the air blowing pipe (301) away from the connecting pipe (2).

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