CN214767538U - Portable anti-purging device - Google Patents

Abstract

The utility model discloses a device is swept to portable blowback, including the gas holder, the connector has been seted up to the outer wall of gas holder, and the inner wall of connector has the pump through pipe connection, the outlet has been seted up to gas holder bottom outer wall, and the inner wall fixedly connected with waterproof valve of outlet, the installing port has been seted up to the outer wall of gas holder, and the inner wall fixedly connected with relief pressure valve of installing port, the relief pressure valve has the outlet valve through pipe connection, the outlet valve has the hose through pipe connection, and the one end fixedly connected with of hose connects. The utility model discloses a cooperation between gas holder, pump, outlet valve and the hose is convenient for block up the sampling tube and carry out quick clearance, sets up the bleeder valve simultaneously in the gas holder bottom, avoids ponding in the gas holder to block up the pipeline and leads to the gas holder explosion.

Description

Portable anti-purging device

Technical Field

The utility model relates to a sweep technical field, especially relate to a device is swept to portable blowback.

Background

Along with the continuous development of wisdom power plant, the degree of automation of power plant is higher and higher, and is higher and higher to the requirement of thermal technology measuring device accuracy and reliability. The blockage of the sampling tube can seriously affect the measurement precision and accuracy, and further affect the safe and stable operation of the unit. Therefore, it is necessary to design a practical back-flushing device, and the thermal measuring device is an important monitoring device for power plant equipment, and the accuracy and reliability of the device are very critical. The pressure transmitter, pressure switch, differential pressure transmitter, flow transmitter and other measuring points in the thermal measuring device mostly adopt stainless steel sampling tubes. In the coal-fired generating set, the measuring working media of part of the sampling pipes are flue gas, air, a wind-powder mixture and the like. Because the working medium in the sampling tube flows rarely, dust in the working medium is easy to deposit at the bent tube section, the valve, the connector and the like of the sampling tube, and the sampling tube is blocked after a long time, so that the deviation of a measured value is large, and the normal operation of a unit is influenced.

The current scheme of solving the sampling tube jam has two kinds:

firstly, the sampling tube is detached from the interface, a slender iron stick is extended into the sampling tube, and the sampling tube is dredged by operating the iron stick.

Secondly, a path of air source is led from a nearby compressed air pipeline and connected to one end of the sampling pipe, and a back flushing pipeline and a valve are additionally arranged. When the sampling tube is blocked, the secondary door of the sampling tube is closed, the reverse purging door is opened, compressed air is introduced into the sampling tube, and the blocked sampling tube is purged by utilizing the pressure of the compressed air.

The first solution has the following disadvantages:

1. the sampling tube may be long, and the thin iron rod has limited length and cannot reach the blocking position of the sampling tube; the coupon may contain a curved section of tubing through which the thin iron rod cannot bend to reach the blockage site.

2. When the sampling pipe is dredged, the sampling valve needs to be opened, the working medium can be sprayed to the external environment from the opening of the sampling pipe, and personal injury risks are caused to workers. The working medium contains coal powder or smoke dust, and the human body can be influenced by inhaling the coal powder or the smoke dust.

The second solution has the following disadvantages:

1. there may be no compressed air conduit near the sampling tube and the cost of building a long distance compressed air conduit is high.

2. The air source is taken from the compressed air pipeline, and a back flushing pipeline, a back flushing valve, a water drain valve and the like need to be installed. The sampling pipes which need to be reversely blown are large in quantity and wide in distribution position, and if the sampling pipes are completely transformed, the engineering quantity is large.

3. The pressure of compressed air is generally a constant value, the pressure of gas cannot be adjusted by using the compressed air for back purging, and the back purging pressures required by different sampling pipes are different, so that different requirements cannot be met.

SUMMERY OF THE UTILITY MODEL

According to the technical problem, a portable anti-purging device is provided.

The utility model discloses a technical means as follows:

the utility model provides a device is swept in portable blowback, includes the gas holder, the connector has been seted up to the outer wall of gas holder, and the inner wall of connector has the pump through pipe connection, the outlet has been seted up to gas holder bottom outer wall, and the inner wall fixedly connected with waterproof valve in outlet, the installing port has been seted up to the outer wall of gas holder, and the inner wall fixedly connected with relief pressure valve of installing port, the relief pressure valve has the outlet valve through pipe connection, the outlet valve has the hose through pipe connection, and the one end fixedly connected with of hose connects.

Preferably, the outer wall of the top of the gas storage tank is provided with a pressure reducing port, and the inner wall of the pressure reducing port is fixedly connected with an installation valve.

Preferably, the outer wall of the air storage tank is fixedly connected with a pressure gauge.

Compared with the prior art, the utility model has the advantages of it is following:

1. this portable anti-device that sweeps, through the cooperation between gas holder, pump, outlet valve and the hose, be convenient for clear up fast the sampling tube jam, set up the valve that drains in the gas holder bottom simultaneously, avoid ponding in the gas holder to block up the pipeline and lead to the gas holder explosion, solved the inconvenient problem of clearing up of current sampling tube jam.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a portable anti-purging device provided by the utility model.

In the figure: 1. a gas storage tank; 2. a water drain valve; 3. an inflator pump; 4. a pressure reducing valve; 5. an outlet valve; 6. a hose; 7. a joint; 8. a pressure gauge; 9. and (5) installing a valve.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below 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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element in question must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

As shown in figure 1, a portable reverse blowing device comprises a gas storage tank 1, wherein the shell of the gas storage tank 1 is made of stainless steel, the internal volume is 2L, the highest gas storage pressure is 1.1MPa, a pressure gauge 8 is arranged on the gas storage tank 1, the range of the pressure gauge is 0-1.6 MPa, the precision is 1.6 grade, the pressure gauge is used for measuring and displaying the pressure of the gas storage tank 1, a safety valve 9 is arranged on the gas storage tank 1, the opening pressure is 1.05MPa for preventing overpressure explosion of the gas storage tank 1, a water discharge pipe and a water discharge valve 2 are arranged at the lower part of the gas storage tank 1 for discharging water stored in the gas storage tank 1 and preventing water from entering a sampling pipe in a reverse blowing stroke, the water discharge valve 2 adopts a stop valve, the sealing performance is good, the opening degree of the valve is convenient to adjust, a connecting port is arranged on the outer wall of the gas storage tank 1, the inner wall of the connecting port is connected with an inflating pump 3 through a pipeline, the inflating pump 3 can use the existing vehicle-mounted inflating pump, the technology is reliable, the cost is low, the internal 18650 power lithium battery is used as a power supply, the power supply is high in power, the cruising ability is excellent, an external power supply is not needed when the air storage tank is inflated, the air storage tank is not limited by a power line, the air storage tank supports digital tire pressure detection, the preset pressure is inflated and stopped immediately, the highest inflation pressure is 1MPa, the outer wall of the air storage tank 1 is provided with a mounting port, the inner wall of the mounting port is fixedly connected with a pressure reducing valve 4, compressed air in the air storage tank 1 is output after being reduced in pressure, the outlet pressure can be adjusted through a knob, the outlet pressure adjusting range is 0-1 MPa, the pressure reducing valve 4 is provided with a pressure gauge for displaying the outlet pressure, the pressure reducing valve 4 is connected with an outlet valve 5 through a pipeline, the outlet valve 5 is connected with a hose 6 through a pipeline, a ball valve is used as the outlet valve 5, the quick opening can be realized, the compressed air is quickly introduced into a sampling pipe, and sediments in the sampling pipe are reversely swept by the pressure and the flow rate of the compressed air, the purpose of dredging the sampling tube is achieved; and one end of the hose 6 is fixedly connected with a joint 7, the inner diameter of the hose is 10mm, the length of the hose is 1m, and the highest bearing pressure is 1.1MPa, and because the sampling tubes are widely distributed, the interface position of the sampling tubes is not convenient for placing a back flushing device, the hose 6 can be used for connection, so that the back flushing device can adapt to a complex working environment and is convenient for back flushing operation.

The working principle is as follows: the method comprises the steps of charging an inflator pump 3 by using a charger until the electric quantity is full, carrying the back flushing device to a position blocking a sampling tube, opening a water drain valve 2, draining accumulated water in a gas storage tank 1, closing the water drain valve 2, closing an outlet valve 5, setting inflation pressure, starting the inflator pump 3, automatically stopping the inflator pump 3 after inflation is completed, observing whether a pressure gauge 8 of the gas storage tank 1 reaches the set pressure, selecting a proper connector 7, connecting one end of the connector to an outlet of a hose 6 and the other end of the connector to an interface of the sampling tube to ensure firm connection, adjusting a pressure reducing valve 4, observing the pressure gauge of the pressure reducing valve 4, adjusting the outlet pressure to the pressure required by back flushing, opening the outlet valve 5, performing back flushing, closing the outlet valve 5 after the sampling tube is dredged, detaching the connector 7, and recovering the sampling tube.

And (3) simulating and calculating dredging effect:

assuming that the pressure of the gas storage tank 1 is 1MPa, the outlet pressure of the pressure reducing valve 4 is adjusted to 1 MPa; the length of the sampling tube is 20m, the inner diameter is 10mm, and the internal pressure is 0; and calculating the gas pressure borne by the blockage during back purging.

Setting the pressure of the gas storage tank 1 as P1, the volume as V1 and the amount of the substance as n 1; the pressure of the sampling tube is P2, the volume is V2, and the amount of the substance is n 2; the average pressure during back purging is P3; the field temperature is T and the atmospheric pressure is P0.

Wherein P1 ═ 1MPa, V1 ═ 2L, P2 ═ 0MPa, V2 ═ 3.14 ═ 0.0052 ═ 20 ═ 1000 ═ 1.57L.

According to the ideal gas state equation, the following can be obtained:

(P1+P0)*V1＝n1*R*T

(P2+P0)*V2＝n2*R*T

(P3+P0)*(V1+V2)＝(n1+n2)*R*T

the solution is P3 ═ (P1 ═ V1+ P2 ═ V2)/(V1+ V2) ═ 0.56MPa (1 × 2+0)/(2+1.57) ═ 0.56MPa

The gas pressure born by the blocked part is 0.56MPa, which is enough to reversely purge out the sediment, thereby realizing the purpose of dredging the sampling tube.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (3)

1. The utility model provides a device is swept in portable blowback, includes the gas holder, its characterized in that, the connector has been seted up to the outer wall of gas holder, and the inner wall of connector has the pump through pipe connection, the outlet has been seted up to gas holder bottom outer wall, and the waterproof valve of inner wall fixedly connected with of outlet, the installing port has been seted up to the outer wall of gas holder, and the inner wall fixedly connected with relief pressure valve of installing port, the relief pressure valve has the outlet valve through pipe connection, the outlet valve has the hose through pipe connection, and the one end fixedly connected with of hose connects.

2. A portable back flushing device according to claim 1, wherein the top outer wall of the tank is formed with a pressure relief port, and the inner wall of the pressure relief port is fixedly connected with a mounting valve.

3. A portable reverse blowing device according to claim 1 or 2, wherein a pressure gauge is fixedly connected to an outer wall of said air container.

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