Method for supplying water and quickly recovering steam metering

Abstract

The invention relates to a method for supplying water and quickly recovering steam metering, which is realized through a quick water supply mechanism, the quick water supply mechanism comprises a condensation tank, a conical straight pipe screwed joint, a quick exhaust valve, a cover-shaped plug, a portable water suction pump, a movable internal thread butt joint, a sealing gasket, a needle valve, a water pipe and a straight joint, all the screws are screwed in corresponding internal threaded holes in the upper plane of the condensation tank; a sealing gasket (7) is placed on the end face of a conical straight pipe threaded connector (2), one end of a movable internal thread butt joint (6) is fastened on the conical straight pipe threaded connector (2), the other end of the movable internal thread butt joint (6) is provided with the sealing gasket (7) and connected with an external thread at one end of a needle valve (9) in a fastening mode, and the other end of the needle valve (9) is fastened with a straight pipe connector (11) after the sealing gasket (7) is placed on the external thread at the other end of the needle valve (9). The technical scheme is simple in structure, flexible to disassemble, easy to use, low in manufacturing cost, capable of reducing labor intensity, suitable for high-altitude operation, capable of rapidly recovering metering, completely eradicating equipment damage and capable of guaranteeing installation precision.

Description

Technical Field

[0001] The invention relates to a transmitter, in particular to a method for water supply and rapid recovery steam metering, belonging to the technical field of high-temperature and high-heat steam metering. Background Art

[0002] Metallurgical enterprises and heavy industrial units are both energy-intensive industries. Steam is the energy medium that must be used in the production process and is the product of these units.

[0003] Our company mainly measures steam by opening holes in the pipeline to take pressure. The condensed water from the steam is collected in the condenser and flows into the pressure pipe and the positive and negative pressure chambers of the transmitter, thus forming a pressure difference for usage statistics.

[0004] At present, because the condensate formed by steam fills the condensate tank, the pressure pipe and the positive and negative pressure chambers of the transmitter for a long time, the condensate is almost in a static state for a long time. The condensate causes rust and scale on the metal container, affecting the sensor accuracy of the transmitter and causing inaccurate measurement. Therefore, we need to frequently open the drain valve or the transmitter plug, and empty the condensate and debris from the drain valve and the transmitter drain outlet under pressure to achieve the cleaning of the pipeline. The valve cannot be closed in time when draining at the outlet of the transmitter, resulting in a sudden spray of high-temperature and high-pressure steam, but at the same time, the dirt is discharged more effectively. The disadvantage is that such operation for a long time will burn the Teflon diaphragm (metal pressure-conducting sheet), causing the transmitter to be damaged and unable to measure or abnormal. Because it takes 4-5 hours for high-temperature and high-pressure steam to form condensate in the condensate tank and the pressure pipe, it is chosen to be directly put into use in daily operation to allow the condensate to form naturally. At this stage, the Teflon diaphragm (metal pressure-conducting sheet) of the transmitter is affected by high temperature and high pressure for a long time, which damages its natural recovery performance. This operation is also one of the factors causing metering failures.

[0005] The above operations are the main reasons for the abnormal measurement and damage of the transmitter. The use of empty pipes without water medium is the key problem that causes the transmitter to be inaccurate and an important factor in the measurement dispute. Therefore, a new solution is urgently needed to solve the above technical problems. Summary of the invention

[0006] The present invention aims at the problems existing in the prior art and provides a method for water supply and rapid recovery of steam metering. The technical solution has the advantages of simple structure, flexible disassembly, easy use, low manufacturing cost, reduced labor intensity, suitability for high-altitude operations, rapid metering recovery, prevention of equipment damage, and guaranteed installation accuracy.

[0007] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: a method for water supply and rapid recovery of steam metering, which is realized by a rapid water supply mechanism, and the rapid water supply mechanism comprises a condenser 1, a tapered straight pipe threaded joint 2, a rapid exhaust valve 3, a cap-shaped plug 4, a portable water pump 5, a movable internal thread joint 6, a sealing gasket 7, a nut 8, a needle valve 9, a water pipe 10 and a straight joint 11, wherein the rapid exhaust valve (3) and the tapered straight pipe threaded joint (2) are all tightened in the internal threaded holes corresponding to the upper plane of the condenser;

[0008] The sealing gasket (7) is placed on the end surface of the tapered straight pipe threaded joint (2), one end of the movable internal thread joint (6) is fastened to the tapered straight pipe threaded joint (2), and the other end is equipped with the sealing gasket (7) and fastened to the external thread of one end of the needle valve (9).

[0009] The other end of the needle valve (9) is threaded with a sealing gasket (7) and then fastened to the straight pipe joint (11).

[0010] One end of the water pipe (10) is connected to the light hole of the straight pipe joint (11), and the other end is connected to the water outlet of the portable water pump (5).

[0011] The water inlet of the portable water pump (5) is connected to one end of a water pipe (10), and the other end of the water pipe (10) is connected to a water source.

[0012] As an improvement of the present invention, the condensation tank 1 is divided into a positive pressure condensation tank 14 and a negative pressure condensation tank 15, which are respectively connected to a positive pressure pipe 16 and a negative pressure pipe 17, and the transmitter also includes a level 25 and a balance plate 12.

[0013] The quick water supply installation operation method is as follows:

[0014] 1) The quick exhaust valve and the tapered straight pipe threaded joint are conveniently fastened to the corresponding mounting holes of the positive pressure and negative pressure condensation tanks. Open the quick exhaust valve.

[0015] 2) Open the quick exhaust valve, and connect and tighten the two ends of the movable internal thread joint to the straight pipe thread end of the tapered straight pipe thread joint and one end of the needle valve.

[0016] 3) The straight connector and needle valve are connected and tightened.

[0017] 4) Connect both ends of the water pipe to the straight joint and the portable water pump.

[0018] 5) Put the portable water pump inlet into the bucket with a water pipe.

[0019] 6) When the condensate tank is filled with condensate, loosen the movable female thread joint and the straight pipe thread end of the tapered straight pipe thread joint, separate the quick water supply circuit assembly from the condensate tank, and close the quick exhaust valve.

[0020] 7) The movable female thread joint of the quick water supply loop assembly is tightly connected to the straight pipe thread end of another condenser cone straight pipe thread joint;

[0021] 8) Open the quick exhaust valve, operate the inlet water supply, and close the quick exhaust valve after the tank is full.

[0022] 9) The straight pipe threads of the movable internal thread joint and the cone straight pipe thread joint of the condenser are loosened and separated, and the waist-shaped groove of the balance plate is placed on the straight pipe thread rods of the cone straight pipe thread joints of the two condenser tanks, and fastened with nuts.

[0023] 10) Place the level meter on the balance board surface to measure the level.

[0024] 11) The cap-shaped plug and the sealing gasket are tightly connected to the straight pipe thread end of the tapered straight pipe thread joint.

[0025] As an improvement of the present invention, the method for rapid water supply is as follows:

[0026] 1) Open the needle valve, start the portable water pump, and formally clean the negative pressure condensate tank, pressure pipe, three-valve group and transmitter.

[0027] 2) Wait for the transmitter and drain valve to have clean water flowing out of the rust-free water, then turn off the portable water pump, tighten the negative pressure plug of the transmitter, and close the three-valve group balance valve and negative pressure drain valve.

[0028] 3) Open the quick exhaust valve, start the portable water pump, and inject water medium into the negative pressure condensation tank, pressure pipe, three-valve group and transmitter;

[0029] 4) Water overflows from the quick exhaust valve, indicating that the water is full and the air is discharged at the same time. Close the needle valve, and the water supply to the negative pressure condensation tank is completed. Turn off the portable water pump.

[0030] 5) Loosen the tapered straight pipe threaded joint on the negative pressure condensation tank and connect it with the movable inner thread, remove the sealing gasket,

[0031] 6) Move the quick water supply circuit assembly as a whole, connect the movable inner thread to the positive pressure condensation tank cone straight pipe threaded joint and tighten it. The sealing gasket must be installed)

[0032] 7) Then follow steps 1) to 5) to perform slag removal, cleaning and water supply operations on the positive pressure condenser, pressure pipe, three-valve group and transmitter. 8) Observe that water overflows from the quick exhaust valve, indicating that the pipeline container of the steam metering equipment is filled with water medium. Finally, turn off the portable water pump, loosen the tapered straight pipe threaded joint on the pressure condenser and connect it with the active inner thread, and remove the sealing gasket. At this point, the steam metering water supply and pipeline container cleaning operations are completely completed.

[0033] Compared with the prior art, the present invention has the following advantages: 1. This technical solution uses the waist-shaped holes of the balance plate to fix the two condensing tanks on the same straight line. The waist-shaped holes meet the installation distance of the condensing tanks, ensuring the straightness of the two condensing tanks in space, and serving as a reference plate for subsequent horizontal adjustment, getting rid of the sloppy installation situation.

[0034] 2. The surface of the balance board is the reference surface for placing the spirit level. The level of the liquid column is adjusted by measuring instruments to make precise measurements and accurately adjust the data.

[0035] 3. The biggest advantage of adding a balance plate is that it allows measurement and adjustment at any time, and the horizontal accuracy can be controlled at all times to ensure the horizontality of the liquid column and avoid measurement errors.

[0036] 4. After installation, the balance plate is retained on the two condensation tanks to prevent displacement after maintenance. It also improves rigidity, avoids deformation of the pressure pipe, and reduces the liquid column drop caused by displacement, which affects the metering effect.

[0037] 5. Through the rapid water supply circuit, the pressure water provided by the portable water pump is used to flush the condensate tank, pressure pipe, three-valve group and transmitter to avoid damage to the transmitter by high temperature and high pressure of steam, get rid of the previous situation that the three-valve group and transmitter cannot be flushed, and effectively flush the container and pipeline thoroughly without dead angles, ensuring the smooth flow of the pressure circuit and removing rusty water and impurities.

[0038] 6. The rapid water supply circuit makes up for the lack of condensed water in the past, and achieves flushing and water medium infusion, achieving the benefits of rapid commissioning and ensuring the accuracy of measurement. It gets rid of the long process of three to five hours of natural condensation into water, and guarantees the accuracy of measurement to the minimum.

[0039] 7. The quick exhaust valve quickly removes the air in the pressure pipe loop and the condensate tank to ensure the operation of pure water pressure. It eliminates the liquid column level difference caused by bubbles when natural condensate is formed, and prevents bubbles from adsorbing on the Teflon diaphragm of the transmitter, resulting in abnormal measurement; 8. This method is simple to install, requires little investment, and is suitable for the transformation of the original steam metering point to minimize metering disputes. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a schematic diagram of the steam metering rapid water supply circuit components;

[0041] Figure 2 This is a schematic diagram of the steam metering rapid water supply circuit components;

[0042] Figure 3 This is a schematic diagram of the installation of the rapid water supply circuit and water supply operation method at the steam metering site;

[0043] Figure 4 Schematic diagram of on-site assembly to ensure the straight line of two condenser tanks at steam metering point;

[0044] Figure 5 Schematic diagram of on-site adjustment of the levels of two condenser tanks at the steam metering point.

[0045] In the figure: 1-condensate tank, 2-cone straight pipe threaded joint, 3-quick exhaust valve, 4-cover-shaped plug, 5-portable water pump, 6-movable internal thread connection, 7-sealing gasket, 8-nut, 9-needle valve, 10-water pipe, 11-straight joint, 12-balance plate, 13-bucket, 14-positive pressure condensate tank, 15-negative pressure condensate tank, 16-positive pressure guiding pipe, 17-negative pressure guiding pipe, 18 primary valve, 19-straight pipe, 20-transmitter, 21-transmitter plug, 22-three-valve group, 23-secondary valve, 24-drain valve, 25-level meter. DETAILED DESCRIPTION

[0046] In order to deepen the understanding of the present invention, the present embodiment is described in detail below with reference to the accompanying drawings.

[0047] Example 1: See Figure 1-Figure 5 A method for water supply and rapid recovery of steam metering is achieved through a rapid water supply mechanism, which includes a condensate tank 1, a tapered straight pipe threaded joint 2, a rapid exhaust valve 3, a cap-shaped plug 4, a portable water pump 5, a movable internal thread joint 6, a sealing gasket 7, a nut 8, a needle valve 9, a water pipe 10 and a straight joint 11, wherein the rapid exhaust valve 3 and the tapered straight pipe threaded joint 2 are all tightened in the internal threaded holes corresponding to the plane on the condensate tank; the sealing gasket 7 is placed on the end surface of the tapered straight pipe threaded joint 2, one end of the movable internal thread joint 6 is fastened to the tapered straight pipe threaded joint 2, and the other end is equipped with the sealing gasket 7 and is fastened with the external thread of one end of the needle valve 9, the other end of the needle valve 9 is fastened with the straight pipe joint 11 after the sealing gasket 7 is placed on the external thread, one end of the water pipe 10 is connected to the light hole of the straight pipe joint 11, and the other end is connected to the water outlet of the portable water pump 5, the water inlet of the portable water pump 5 is connected to one end of the water pipe 10, and the other end of the water pipe 10 is connected to a water source. The portable water pump is convenient and compact, easy to carry, with its own battery, and can be used anytime and anywhere. A needle valve is set to prevent the pressure water from overflowing and affecting other equipment, thus cutting off the water supply. The tapered thread end of the tapered straight pipe threaded joint ensures long-term tightening without leakage, and the straight thread end is convenient for connection, which reduces the wear of the sealing gasket and facilitates the installation of other equipment (balance plate and cap-shaped plug) in the later stage. The movable internal thread docking serves as a transition connection, and other connections do not rotate when rotating. The quick exhaust valve operation is to exhaust the internal air when supplying water to the closed pressure pipe, and it can be observed whether the condensate tank is filled with medium. After the steam is put into use, the bubbles are discharged to ensure the accuracy of the metering data.

[0048] Example 2: See Figure 1-Figure 5As an improvement of the present invention, the condensation tank 1 is divided into a positive pressure condensation tank 14 and a negative pressure condensation tank 15, which are respectively connected to a positive pressure guiding pipe 16 and a negative pressure guiding pipe 17. The transmitter also includes a level meter 25 and a balance plate 12. The rapid water supply installation operation method is as follows:

[0049] 1) The quick exhaust valve and the tapered straight pipe threaded joint are conveniently fastened to the corresponding mounting holes of the positive pressure and negative pressure condensation tanks. Open the quick exhaust valve.

[0050] 2) Open the quick exhaust valve, and connect and tighten the two ends of the movable internal thread joint to the straight pipe thread end of the tapered straight pipe thread joint and one end of the needle valve.

[0051] 3) The straight connector and needle valve are connected and tightened.

[0052] 4) Connect both ends of the water pipe to the straight joint and the portable water pump.

[0053] 5) Put the portable water pump inlet into the bucket with a water pipe.

[0054] 6) When the condensate tank is filled with condensate, loosen the movable female thread joint and the straight pipe thread end of the tapered straight pipe thread joint, separate the quick water supply circuit assembly from the condensate tank, and close the quick exhaust valve.

[0055] 7) The movable female thread joint of the quick water supply loop assembly is tightly connected to the straight pipe thread end of another condenser cone straight pipe thread joint;

[0056] 8) Open the quick exhaust valve, operate the inlet water supply, and close the quick exhaust valve after the tank is full.

[0057] 9) The straight pipe threads of the movable internal thread joint and the cone straight pipe thread joint of the condenser are loosened and separated, and the waist-shaped groove of the balance plate is placed on the straight pipe thread rods of the cone straight pipe thread joints of the two condenser tanks, and fastened with nuts.

[0058] 10) Place the level meter on the balance board surface to measure the level.

[0059] 11) The cap-shaped plug and the sealing gasket are tightly connected to the straight pipe thread end of the tapered straight pipe thread joint.

[0060] The method of quick water supply is as follows:

[0061] 1) Open the needle valve, start the portable water pump, and formally clean the negative pressure condensate tank, pressure pipe, three-valve group and transmitter.

[0062] 2) Wait for the transmitter and drain valve to have clean water flowing out of the rust-free water, then turn off the portable water pump, tighten the negative pressure plug of the transmitter, and close the three-valve group balance valve and negative pressure drain valve.

[0063] 3) Open the quick exhaust valve, start the portable water pump, and inject water medium into the negative pressure condensation tank, pressure pipe, three-valve group and transmitter;

[0064] 4) Water overflows from the quick exhaust valve, indicating that the water is full and the air is discharged at the same time. Close the needle valve, and the water supply to the negative pressure condensation tank is completed. Turn off the portable water pump.

[0065] 5) Loosen the tapered straight pipe threaded joint on the negative pressure condensation tank and connect it with the movable inner thread, remove the sealing gasket,

[0066] 6) Move the quick water supply circuit assembly as a whole, connect the movable inner thread to the positive pressure condensation tank cone straight pipe threaded joint and tighten it. The sealing gasket must be installed)

[0067] 7) Then follow steps 1) to 5) to perform slag removal, cleaning and water supply operations on the positive pressure condenser, pressure pipe, three-valve group and transmitter. 8) Observe that water overflows from the quick exhaust valve, indicating that the pipeline container of the steam metering equipment is filled with water medium. Finally, turn off the portable water pump, loosen the tapered straight pipe threaded joint on the pressure condenser and connect it with the active inner thread, and remove the sealing gasket. At this point, the steam metering water supply and pipeline container cleaning operations are completely completed.

[0068] Water supply circuit installation method: (negative pressure circuit)

[0069] 1. Close the primary valve of the straight pipe steam metering point, open the secondary valve, the drain valve and the plug of the positive and negative pressure chamber of the transmitter, and drain the condensate from the pressure pipe and condensate tank. Remove the condensate tank of the positive and negative pressure chamber.

[0070] 2. According to the external thread specifications of the quick exhaust valve and the tapered straight pipe threaded joint, the corresponding internal threaded holes are machined on the plane of the condenser, and then the quick exhaust valve and the tapered straight pipe threaded joint are machined on the threaded holes. (The threaded holes of the condenser are machined later)

[0071] 3. Reconnect and tighten the positive and negative pressure chamber condenser with the quick exhaust valve and tapered straight pipe threaded joint installed in its original position.

[0072] 4. Select any one of the negative pressure condensation tanks, place the sealing gasket between the tapered straight pipe threaded joint and the needle valve, and tighten the two pieces.

[0073] 5. The other end of the needle valve is also tightly connected to the straight-through connector, and a sealing gasket must be added in the middle.

[0074] 3. Methods to ensure the horizontal installation accuracy of the two condensate tanks and to block the pipelines:

[0075] 1. Place the waist-shaped grooves at both ends of the balance plate on the hexagonal plane of the tapered straight pipe threaded joint, and then fix the balance plate with nuts so that the positive and negative pressure condensation tanks are firmly connected and in the same straight line.

[0076] 2. Place a level on the balance board and measure the horizontal accuracy.

[0077] 3. According to the bubble in the spirit level of the level instrument, loosen any fastener that fixes the pressure pipe to allow the pressure pipe and the condensate tank to move up and down freely.

[0078] 4. Observe the bubble in the level, raise or lower any pressure tube so that the bubble in the level is in the middle position, then tighten the fasteners of the pressure tube, and then observe the bubble in the level of the spirit level.

[0079] 5. Repeat the above steps until the two condensate tanks are in a horizontal position.

[0080] 6. Place the sealing gasket into the threaded hole of the cap-shaped plug, tighten it on the tapered straight pipe threaded joint, and then tighten the quick exhaust valve.

[0081] 7. At this moment, the steam metering and rapid water supply to restore steam metering in time to avoid damage to the transmitter are completely completed.

[0082] 8. Confirm that the secondary valve is open, the three-valve group is in the closed state, the transmitter is connected to the atmosphere, and the zero position is adjusted.

[0083] 9. Open the three-valve group and close the transmitter plug, open the primary valve, and the steam metering is officially put into use.

[0084] This technology quickly replenishes water medium to the condensate tank and pressure pipe, allowing the steam metering function to recover quickly in a short period of time, avoiding scalding and damage to the transmitter, while ensuring the horizontal balance of the condensate tank and ensuring metering accuracy.

[0085] It should be noted that the above embodiments are not intended to limit the protection scope of the present invention, and equivalent changes or substitutions made on the basis of the above technical solutions all fall within the protection scope of the claims of the present invention.

Claims

1. A method for water supply and rapid steam recovery metering, characterized in that: The quick water supply mechanism is realized by a quick water supply mechanism, which comprises a condensing tank, a tapered straight pipe threaded joint, a quick exhaust valve, a cap-shaped plug, a portable water pump, a movable internal thread joint, a sealing gasket, a needle valve, a water pipe and a straight joint, wherein the quick exhaust valve (3) and the tapered straight pipe threaded joint (2) are all screwed into the internal threaded holes corresponding to the plane on the condensing tank; the sealing gasket (7) is placed on the end surface of the tapered straight pipe threaded joint (2); one end of the movable internal thread joint (6) is fastened to the tapered straight pipe threaded joint (2); the other end is equipped with a sealing gasket (7) and is fastened to the external thread of one end of the needle valve (9); the other end of the needle valve (9) is fastened to the straight pipe joint (11) after the external thread is placed with the sealing gasket (7); one end of the water pipe (10) is connected to the light hole of the straight pipe joint (11); the other end is connected to the water outlet of the portable water pump (5). The water inlet of the portable water pump (5) is connected to one end of a water pipe (10), and the other end of the water pipe (10) is connected to a water source.

2. The method for water supply and rapid steam recovery metering according to claim 1, characterized in that: The condensation tank is divided into a positive pressure condensation tank and a negative pressure condensation tank, which are respectively connected to the positive pressure pipe and the negative pressure pipe. The transmitter also includes a level and a balance plate. The rapid water supply installation operation method is as follows: 1) The quick exhaust valve and the tapered straight pipe threaded joint are conveniently fastened to the corresponding mounting holes of the positive pressure and negative pressure condensation tanks. Open the quick exhaust valve. 2) Open the quick exhaust valve, and connect and tighten the two ends of the movable internal thread joint to the straight pipe thread end of the tapered straight pipe thread joint and one end of the needle valve. 3) The straight connector and needle valve are connected and tightened. 4) Connect both ends of the water pipe to the straight joint and the portable water pump. 5) Put the portable water pump inlet into the bucket with a water pipe. 6) When the condensate tank is filled with condensate, loosen the movable female thread joint and the straight pipe thread end of the tapered straight pipe thread joint, separate the quick water supply circuit assembly from the condensate tank, and close the quick exhaust valve. 7) The movable female thread joint of the quick water supply loop assembly is tightly connected to the straight pipe thread end of another condenser cone straight pipe thread joint; 8) Open the quick exhaust valve, operate the inlet water supply, and close the quick exhaust valve after the tank is full. 9) The straight pipe threads of the movable internal thread joint and the cone straight pipe thread joint of the condenser are loosened and separated, and the waist-shaped groove of the balance plate is placed on the straight pipe thread rods of the cone straight pipe thread joints of the two condenser tanks, and fastened with nuts. 10) Place the level meter on the balance board surface to measure the level. 11) The cap-shaped plug and the sealing gasket are tightly connected to the straight pipe thread end of the tapered straight pipe thread joint.

3. The method for water supply and rapid steam recovery metering according to claim 2, characterized in that: The method of quick water supply is as follows: 1) Open the needle valve, start the portable water pump, and formally clean the negative pressure condensate tank, pressure pipe, three-valve group and transmitter. 2) Wait for the transmitter and drain valve to have clean water flowing out of the rust-free water, then turn off the portable water pump, tighten the negative pressure plug of the transmitter, and close the three-valve group balance valve and negative pressure drain valve. 3) Open the quick exhaust valve, start the portable water pump, and inject water medium into the negative pressure condensation tank, pressure pipe, three-valve group and transmitter; 4) Water overflows from the quick exhaust valve, indicating that the water is full and the air is discharged at the same time. Close the needle valve, and the water supply to the negative pressure condensation tank is completed. Turn off the portable water pump. 5) Loosen the tapered straight pipe threaded joint on the negative pressure condensation tank and connect it with the movable inner thread, remove the sealing gasket, 6) Move the quick water supply circuit assembly as a whole, connect the movable inner thread to the positive pressure condensation tank cone straight pipe threaded joint and tighten it. The sealing gasket must be installed) 7) Then follow steps 1) to 5) to perform slag removal, cleaning and water supply operations on the positive pressure condenser, pressure pipe, three-valve group and transmitter. 8) Observe that water overflows from the quick exhaust valve, indicating that the pipeline container of the steam metering equipment is filled with water medium. Finally, turn off the portable water pump, loosen the tapered straight pipe threaded joint on the pressure condenser and connect it with the active inner thread, and remove the sealing gasket. At this point, the steam metering water supply and pipeline container cleaning operations are completely completed.

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