Movable pipeline sealing condensate removal system and method

Abstract

The present application belongs to the field of environmental protection technology, and provides a movable pipeline closed condensate discharge system, which sequentially communicates a conveying pipeline, a condensate discharge valve, a quick connector, a dredger, a flexible connecting pipe, a liquid collecting valve and a movable liquid storage tank, the liquid collecting valve and the flexible connecting pipe are connected with a nitrogen tank through a pressure charging valve in a pipeline, and the movable liquid storage tank is installed on a four-wheel cart; a movable pipeline closed condensate discharge method, comprising the following steps: step S1, sealing connection; step S2, nitrogen pressure charging; step S3, discharging condensate; step S4, screw dredging; step S5, retracting the screw tap; and step S6, nitrogen purging; the present application can realize closed condensate discharge by inserting a screw tap into a pipeline when only a condensate discharge valve is provided without a gas return line, and can effectively dredge when the pipeline is blocked during condensate discharge, thereby avoiding environmental pollution.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of environmental protection production, and particularly relates to a movable pipeline closed condensate discharge system and a method thereof. BACKGROUND

[0002] With the enhancement of people's environmental protection consciousness and the emphasis on personal safety, unorganized discharge of chemical production devices becomes a concern of environmental protection, and random discharge is strictly prohibited. Organic waste gas or toxic gas exists at high and low points in the pipeline conveying process, and condensate is accumulated at the low point to form a liquid seal, which affects the normal conveying of the gas. In order to avoid the liquid seal caused by liquid accumulation at the low point, condensate needs to be discharged at the low point of the pipeline regularly, but the condensate discharge point is only open to discharge, and the pipeline condensate cannot be discharged in a closed manner. In the actual industrial device area pipeline, a part of the pipelines is provided with a liquid separation tank, and the liquid separation tank can be used for regular liquid separation, but many low points are not provided with a liquid separation tank. When sealed condensate is used, the pressure in the liquid separation tank rises, so that the liquid accumulated in the pipeline cannot flow out smoothly, and only the waste liquid tank can be used to receive the condensate on site, and the condensate is discharged in an open manner. The condensate is discharged into the waste liquid tank, and the gas brought out is dispersed into the air. In addition, the condensate valve is at the low point of the gas conveying pipeline, and the condensate valve is not active. Not only liquid is accumulated, but also rust, viscous substances and solid particles are accumulated and stored for a long time to form scale and block the upper end short pipe of the condensate valve. At this time, even if the condensate valve is opened, the condensate cannot flow out smoothly, and it is difficult to dredge. If not handled properly, the residual liquid may be sprayed out and fall to the ground, and even the operator's body, causing environmental pollution and safety hazards. SUMMARY

[0003] In view of the above problems, the present application provides a movable pipeline closed condensate discharge system and a method thereof. For the pipeline that needs to be temporarily discharged, not only can the closed condensate discharge be realized, but also the pipeline condensate can be effectively dredged when the pipeline condensate is blocked.

[0004] The present application provides a movable pipeline closed condensate discharge system, which comprises a conveying pipeline, a condensate valve, a quick connector, a dredging device, a connecting hose, a liquid collecting valve and a movable liquid storage tank which are sequentially connected. The pipeline between the liquid collecting valve and the connecting hose is connected with a nitrogen tank through a pipeline with a pressure charging valve. The movable liquid storage tank is installed on a four-wheel cart and can be moved. The dredging device is composed of a sleeve, a threaded elevator, a mechanical seal, a rotating hand wheel and a threaded drill. The threaded elevator is fixed in the sleeve, the rotating hand wheel is fixed outside the sleeve, the mechanical seal connects the threaded elevator and the rotating hand wheel in a sealed manner, the threaded drill is engaged with the threaded elevator through threads, the rotating hand wheel drives the threaded drill to move along the internal threads of the threaded elevator to move up and down, and at the same time, the threaded drill also rotates, so that the threaded drill with external threads has the function of drilling.

[0005] The pressure gauge is installed on the outlet pipeline of the pressure filling valve and is close to the pipeline where the liquid collecting valve is located;

[0006] The mobile liquid storage tank is provided with a liquid level gauge on the side for observing the liquid level of the mobile liquid storage tank, and a liquid discharge valve is arranged at the bottom for discharging the liquid in the mobile liquid storage tank.

[0007] Further, the upper end of the threaded needle is a needle head with external threads, and the lower end is a lifting rod with external threads, and the length of the lifting rod is 0.5 meters.

[0008] Further, the nitrogen tank is filled with nitrogen gas with a pressure not greater than 10 MPa and a purity not less than 99.5%.

[0009] The application also provides a mobile pipeline sealed condensate discharge method applied to the mobile pipeline sealed condensate discharge system.

[0010] Step S1, move the mobile liquid storage tank to below the condensate valve, and seal the quick connector to the lower end short pipe of the condensate valve below the conveying pipeline;

[0011] Step S2, slightly open the pressure filling valve, slowly fill the compressed nitrogen gas in the nitrogen tank into the pipeline between the condensate valve and the liquid collecting valve, and when the pressure gauge reading rises to a specified pressure, close the pressure filling valve;

[0012] Step S3, open the condensate valve, if the pressure displayed by the pressure gauge rapidly decreases, it indicates that the upper end short pipe of the condensate valve is unobstructed, at this time, open the liquid collecting valve, and guide the condensate into the mobile liquid storage tank through the channel formed by the condensate valve, the quick connector, the dredger, the connecting hose and the liquid collecting valve in sequence;

[0013] Step S4, if the pressure does not decrease or decreases slowly, it indicates that there is a blockage in the upper end short pipe of the condensate valve, at this time, open the condensate valve to 100%, and drive the threaded needle to rotate by rotating the hand wheel by hand, so that the threaded needle moves upward along the threaded lifter in a spiral manner, and the condensate scale is drilled through the tapered thread of the needle head of the threaded needle;

[0014] Step S5, observe the condensate flowing condition through the liquid level gauge, if there is no condensate flowing in the mobile liquid storage tank, reverse the hand wheel to drive the threaded needle to retract into the sleeve;

[0015] Step S6, slightly open the pressure filling valve, use nitrogen gas to blow and replace the gas in the liquid discharge channel, then close the condensate valve and the liquid collecting valve, close the pressure filling valve, and remove the quick connector, and end the condensate discharge.

[0016] In step S2, when the pressure of the pressure gauge rises to 0.4-0.5 MPa, the pressure filling valve is closed.

[0017] The beneficial effect of the present application is that the sealed condensate can be realized on the pipeline with only the condensate valve and without the exhaust gas return line, and the safety and environmental protection can be realized; when the condensate is blocked, the effective dredging can be realized through the dredging device.

[0018] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, and can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, it should be understood that the following drawings only show some embodiments of the present application, therefore should not be regarded as a limitation on the scope, for those skilled in the art, without creative labor, other related drawings can also be obtained from these drawings.

[0020] Figure 1 The overall structure schematic diagram of the present application is disclosed.

[0021] Figure 2 The dredging device structure diagram of the present application is disclosed.

[0022] Explanation of reference numerals: 1, conveying pipeline; 2, condensate valve; 3, quick connector; 4, dredging device; 5, connecting hose; 6, liquid collecting valve; 7, pressure gauge; 8, nitrogen tank; 9, pressure charging valve; 10, mobile liquid storage tank; 11, liquid level meter; 12, liquid discharge valve; 41, sleeve; 42, threaded needle; 43, rotating hand wheel; 44, threaded lifter; 45, mechanical seal. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below by combining the drawings in the embodiments of the present application, obviously, the described embodiments are part of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0024] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0025] It should be noted that like reference numerals and letters refer to like items in the several views, and once an item is defined in one view, it need not be further defined and explained in subsequent views.

[0026] A mobile pipeline closed condensate drainage system, sequentially connected conveying pipeline 1, condensate valve 2, quick connector 3, dredger 4, connecting hose 5, liquid collecting valve 6 and mobile liquid storage tank 10, the pipeline between the liquid collecting valve 6 and the connecting hose 5 is connected with the nitrogen tank 8 through the pipeline with the charging valve 9, the mobile liquid storage tank 10 is installed on the four-wheel cart and is mobile, the dredger 4 is composed of sleeve 41, threaded lifter 44, mechanical seal 45, rotating hand wheel 43 and threaded needle 42; the threaded lifter 44 is fixed in the sleeve 41, the rotating hand wheel 43 is fixed outside the sleeve 41, the mechanical seal 45 seals and connects the threaded lifter 44 and the rotating hand wheel 43, the threaded needle 42 is engaged on the threaded lifter 42 through threads, the rotating hand wheel 43 drives the threaded needle 42 to move along the internal threads of the threaded lifter 44 to move up and down and also to rotate spirally, so that the threaded needle with external threads has the function of drilling;

[0027] The charging valve 9 outlet pipeline is installed with the pressure gauge 7, and the pressure gauge 7 is close to the pipeline where the liquid collecting valve 6 is located; the side of the mobile liquid storage tank 10 is provided with the liquid level gauge 11 for observing the liquid level of the mobile liquid storage tank 10, and the bottom is provided with the liquid discharge valve 12 for discharging the liquid in the mobile liquid storage tank 10.

[0028] In the embodiment of the application, the upper end of the threaded needle 42 is a needle head with external threads, and the lower end is a lifting rod with external threads, and the lifting rod is 0.5 meters long.

[0029] In the embodiment of the application, the nitrogen tank is filled with nitrogen gas with a pressure not greater than 10 MPa and a purity not less than 99.5%.

[0030] The mobile pipeline closed condensate drainage system is used for the method for pipeline closed condensate drainage, which includes the following steps:

[0031] Step S1, moving the mobile liquid storage tank 10 to below the condensate valve 2, and sealingly connecting the quick connector 3 with the lower end short pipe of the condensate valve 2 below the conveying pipeline 1;

[0032] Step S2, slightly opening the charging valve 9, slowly filling the compressed nitrogen gas in the nitrogen tank 8 into the pipeline between the condensate valve 2 and the liquid collecting valve 6, and then closing the charging valve 9 when the reading of the pressure gauge 7 rises to the specified pressure;

[0033] Step S3, open the drain valve 2, if the pressure gauge 7 shows the pressure drops rapidly, indicating that the drain valve 2 upper end short tube is unobstructed, at this time open the liquid collection valve 6, the condensate is introduced into the mobile liquid storage tank 10 through the channel formed by the drain valve 2, quick connector 3, dredger 4, connecting hose 5 and liquid collection valve 6 in turn;

[0034] Step S4, if the pressure does not drop or slowly, indicating that the drain valve 2 upper end short tube exists the phenomenon of blockage, at this time the drain valve 2 opening is opened to 100%, the hand wheel 43 is hand turned to drive the threaded needle 42 to rotate, the helical upward movement along the threaded lifter 44 is generated, the scale layer is drilled by the tapered thread of the needle head on the threaded needle 42;

[0035] Step S5, the condensate downflow is observed by the liquid level gauge 11, if the mobile liquid storage tank 10 is not condensed liquid, the hand wheel 43 is reversely hand turned, and the threaded needle 42 is withdrawn into the sleeve 41;

[0036] Step S6, slightly open the pressure charging valve 9, use nitrogen to blow and replace the gas in the liquid discharge channel, then close the drain valve 2 and the liquid collection valve 6, close the pressure charging valve 9, and remove the quick connector 3, end the condensate drainage.

[0037] In step S2, when the pressure of the pressure gauge 7 rises to 0.4-0.5 MPa, the pressure charging valve 9 is closed.

[0038] It should be understood that the specific order or hierarchy of steps in the processes disclosed is an example of exemplary approaches. Based upon design preferences, it is understood that the specific order or hierarchy of steps in the processes can be rearranged while remaining within the scope of the present disclosure. The accompanying method claims present elements of the various steps in exemplary order and are not intended to be limited to the specific order or hierarchy presented.

[0039] In the above detailed description, various features are grouped together in single embodiments for the purpose of streamlining the disclosure. Such disclosed approaches should not be interpreted as reflecting an intention that the claimed embodiments require more features than are explicitly recited in each claim. On the contrary, as indicated above it is recognized that the claimed invention is intended to cover all combinations of features disclosed throughout the specification, regardless of which specific combination is claimed in each claim. Thus the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate preferred embodiment.

[0040] The above description includes examples of one or more embodiments. Of course, not all possible combinations of components or methods described above can be claimed as an embodiment, but one of ordinary skill in the art will recognize that many such further combinations and permutations of the embodiments described are possible. Accordingly, the described embodiments are intended to embrace all such alterations, modifications and variations which fall within the scope of the appended claims. Additionally, where the description or the claims recite "a", "an" or a "the" one or more of elements, this does not exclude multiple numbers for this element. Further, where the description or the claims recite that elements are each independently recited, this does not exclude multiple elements from being the same. Further, where the description or the claims recite "comprising", "containing", "including" or "having" this does not exclude other elements. Further, where the description or the claims recite "or" this does not exclude "and". Further, where the description or the claims recite "about" or "substantially" this does not exclude other elements.

Claims

1. A mobile pipeline containment dewatering system, comprising: The device comprises sequentially connected conveying pipeline, condensate valve, quick connector, dredger, connecting hose, liquid collecting valve and mobile liquid storage tank, the pipeline between the liquid collecting valve and the connecting hose is connected with nitrogen tank through pipeline with pressure charging valve, the mobile liquid storage tank is installed on four-wheel cart and is movable, the dredger is composed of sleeve, threaded lifter, mechanical seal, rotating hand wheel and threaded needle, the threaded lifter is fixed in the sleeve, the rotating hand wheel is fixed outside the sleeve, the mechanical seal seals and connects the threaded lifter and the rotating hand wheel, the threaded needle is engaged on the threaded lifter through thread, the rotating hand wheel drives the threaded needle to move along the internal thread of the threaded lifter to move up and down and also to rotate spirally, so that the threaded needle with external thread has the function of drilling, a pressure gauge is installed on the outlet pipeline of the pressure charging valve, the pressure gauge is close to the pipeline where the liquid collecting valve is located, a liquid level meter is installed on the side of the mobile liquid storage tank, and a liquid discharge valve is arranged at the bottom of the mobile liquid storage tank.

2. The mobile pipeline containment and offloading system of claim 1, wherein, The upper end of the threaded needle is a needle head with external thread, and the lower end is a lifting rod with external thread, and the lifting rod is 0.5 meters long.

3. The mobile pipeline containment and offloading system of claim 1, wherein, The nitrogen tank is filled with nitrogen gas with a pressure not greater than 10 MPa and a purity not less than 99.5%.

4. A method for mobile pipeline closed condensate discharge, applied to the mobile pipeline closed condensate discharge system of any one of claims 1-3, characterized in that, The device comprises the following steps: Step S1, moving the mobile liquid storage tank to below the condensate valve, and sealingly connecting the quick connector with the lower end short pipe of the condensate valve below the conveying pipeline; Step S2, slightly opening the pressure charging valve, slowly filling the compressed nitrogen in the nitrogen tank into the pipeline between the condensate valve and the liquid collecting valve, and closing the pressure charging valve when the pressure gauge reading rises to a specified pressure; Step S3, opening the condensate valve, if the pressure displayed by the pressure gauge rapidly decreases, it indicates that the upper end short pipe of the condensate valve is unblocked, at this time, the liquid collecting valve is opened, and the condensate is guided into the mobile liquid storage tank through the channel formed by the condensate valve, the quick connector, the dredger, the connecting hose and the liquid collecting valve in sequence; Step S4, if the pressure does not decrease or slowly decreases, it indicates that there is a blockage in the upper end short pipe of the condensate valve, at this time, the opening of the condensate valve is opened to 100%, the threaded needle is driven to rotate by hand rotating the hand wheel, and the threaded needle moves upward along the threaded lifter spirally, and the threaded needle with external thread has the function of drilling through the tapered thread of the needle head; Step S5, observing the condensate flowing condition through the liquid level meter, if there is no condensate flowing in the mobile liquid storage tank, the threaded needle is retracted into the sleeve by reversely hand rotating the hand wheel; Step S6, slightly opening the pressure charging valve, using nitrogen to blow and replace the gas in the liquid discharge channel, then closing the condensate valve and the liquid collecting valve, closing the pressure charging valve, and dismounting the quick connector, and ending the condensation.

5. A method of mobile pipeline sealed drainage as claimed in claim 4 wherein, In step S2, when the pressure of the pressure gauge rises to 0.4-0.5 MPa, the pressure charging valve is closed.

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