CN111473239B

CN111473239B - Self-suction inverted bucket type drain valve

Info

Publication number: CN111473239B
Application number: CN202010543870.9A
Authority: CN
Inventors: 韩帅飞
Original assignee: Shanghai Feifan Intelligent Technology Co ltd
Current assignee: Shanghai Feifan Intelligent Technology Co.,Ltd.
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-09-21
Anticipated expiration: 2040-06-15
Also published as: CN111473239A

Abstract

The invention discloses a self-suction inverted bucket type drain valve, which comprises a valve body, wherein a gas-liquid separation cavity, a steam inlet channel and a liquid outlet channel are arranged on the valve body, a rotating arm is arranged at the bottom of the liquid outlet channel, the rotating arm is rotatably connected with an inverted bucket, the inverted bucket covers the steam inlet channel, a valve core is arranged on the rotating arm, the inverted bucket is lifted to enable the valve core to block or open the liquid outlet channel, a conical guide section, an injection area and a vacuum chamber are sequentially arranged on the steam inlet channel along the steam flowing direction, the vacuum chamber is connected with a self-suction channel, a one-way valve is arranged on the self-suction channel, and the self-suction channel is connected with a water container. When the condensed water in the valve body of the self-suction inverted bucket type drain valve flashes into steam, the flow rate of the steam is remarkably accelerated, the steam generates larger suction force in a vacuum chamber when rapidly passing through the conical guide section, the injection area and the vacuum chamber, the water in the water container is sucked into the vacuum chamber and enters the valve body to rapidly form a water seal, so that the waste of a large amount of steam leakage is prevented, and the energy conservation and emission reduction are facilitated.

Description

Self-suction inverted bucket type drain valve

Technical Field

The invention belongs to the technical field of drain valves, and particularly relates to a self-suction inverted bucket type drain valve.

Background

Trap valves, also known as automatic drains or condensate drains, are used primarily in steam systems to drain condensate. The inverted bucket type drain valve is a common drain valve, an inverted bucket is arranged in the inverted bucket type drain valve and is used as a liquid level sensing element, the opening of the bucket is downward, and the inverted bucket is connected with a lever to drive a valve core to open and close the valve. When the device is just started, air and low-temperature condensed water in the pipeline enter the drain valve, the inverted bucket falls down by the weight of the inverted bucket, the inverted bucket is connected with the lever to drive the valve core to open the valve, and the air and the low-temperature condensed water are quickly discharged. When steam enters the inverted bucket, the steam of the inverted bucket generates upward buoyancy, and the inverted bucket rises to be connected with the lever to drive the valve core to close the valve. The inverted bucket is provided with a small hole, when one part of steam is discharged from the small hole and the other part of steam generates condensed water, the inverted bucket loses buoyancy and sinks downwards by the self weight, and the inverted bucket is connected with a lever to drive a valve core to open a valve, so that the inverted bucket works circularly and discharges water discontinuously. When the inverted bucket type drain valve is used, enough water must be contained in the valve body, a water seal is formed above the lower edge of the inverted bucket, and if the water seal is lost, steam can be directly discharged through the valve outlet. In the in-service use process, because the comdenstion water temperature in the valve body is high, under the too high condition of steam temperature, can make some comdenstion water flash evaporation of valve body inside become steam, the bucket of falling hangs and loses buoyancy and sinks, through the quick leakage steam of export, until having sufficient comdenstion water to get into the interior water seal that reforms formation of valve body again, can prevent steam leakage extravagant, be unfavorable for energy saving and emission reduction.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the self-suction inverted bucket type drain valve which can quickly supplement water to the valve body to form water seal by virtue of the self-suction effect of the quickly flowing steam when condensed water in the valve body flashes into steam, thereby preventing a large amount of steam from leaking and wasting, and being beneficial to energy conservation and emission reduction.

In order to solve the technical problem, the invention is solved by the following technical scheme: the utility model provides a from inhaling formula inverted bucket formula trap, includes the valve body, be equipped with gas-liquid separation chamber, admission passageway and liquid outlet channel on the valve body, the liquid outlet channel bottom is provided with the rotor arm, the rotor arm rotates and is connected with inverted bucket, inverted bucket cover in on the admission passageway, be provided with the case on the rotor arm, inverted bucket goes up and down so that case shutoff or opening liquid outlet channel, last toper direction section, injection zone and the vacuum chamber of having set gradually along the steam flow direction of steam of admission passageway, vacuum chamber is connected with from inhaling the passageway, be provided with the check valve on inhaling the passageway, from inhaling the passageway connection flourishing water receptacle. The self-suction inverted bucket type drain valve has slower flow speed and weak self-suction capability under the condition that the valve body is internally provided with the water seal, and because the gravity of water needs to be overcome during self-suction, water cannot be sucked into a vacuum chamber from a water container, and the drain valve works normally; when the condensed water in the valve body is flashed into steam, the flow rate of the steam is remarkably accelerated, and when the steam rapidly passes through the conical guide section, the injection zone and the vacuum chamber, the great suction force is generated in the vacuum chamber, so that the water in the water container is sucked into the vacuum chamber and enters the valve body to rapidly form a water seal, thereby preventing a large amount of steam from being leaked and wasted, and being beneficial to energy conservation and emission reduction.

In the above technical solution, preferably, the steam inlet channel is provided with a detachable pipe section, and the tapered guide section, the injection region and the vacuum chamber are provided on the pipe section. Adopt this structure to make the pipeline section can quick replacement, according to the toper direction section, the injection district and the vacuum chamber of the different design parameters of the demand change of flow and velocity of flow, adapt to the user demand under the different velocity of flow circumstances, guarantee can't inhale water from flourishing water container under normal velocity of flow, only under the condition that the water seal loses, just can follow flourishing water container and absorb water under the condition that steam flows fast.

In the above technical solution, specifically, the pipe section is detachably connected to the valve body through a flange or a thread.

In the above technical scheme, preferably, the check valve is detachably arranged on the pipe section, the check valve is connected with a water pipe, and the water pipe is connected with the water container. By adopting the structure, the check valve can be disassembled and assembled from the pipe section, and the original check valve can be still used after the pipe section is replaced, so that the cost is saved.

In the above technical solution, preferably, the water container is disposed below the self-priming channel. By adopting the structure, the gravity of water needs to be overcome when the water is self-sucked from the water container, and the water is prevented from being sucked from the water container under the condition that the water seal exists.

Compared with the prior art, the invention has the following beneficial effects: the self-suction inverted bucket type drain valve has slower flow speed and weak self-suction capability under the condition that the valve body is internally provided with the water seal, and because the gravity of water needs to be overcome during self-suction, water cannot be sucked into a vacuum chamber from a water container, and the drain valve works normally; when the condensed water in the valve body is flashed into steam, the flow rate of the steam is remarkably accelerated, and when the steam rapidly passes through the conical guide section, the injection zone and the vacuum chamber, the great suction force is generated in the vacuum chamber, so that the water in the water container is sucked into the vacuum chamber and enters the valve body to rapidly form a water seal, thereby preventing a large amount of steam from being leaked and wasted, and being beneficial to energy conservation and emission reduction.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the following detailed description and accompanying drawings: referring to fig. 1, a self-priming inverted bucket type drain valve comprises a valve body 1, wherein a gas-liquid separation cavity 2, a gas inlet channel 3 and a liquid outlet channel 4 are arranged on the valve body 1, the gas inlet channel 3 extends into the gas-liquid separation cavity 2 from the bottom, the liquid outlet channel 4 is positioned at the top of the gas-liquid separation cavity 2, a rotating arm 5 is arranged at the bottom of the liquid outlet channel 4, the rotating arm 5 is rotatably connected with an inverted bucket 6, the inverted bucket 6 covers the gas inlet channel 3, a valve core 7 is arranged on the rotating arm 5, the inverted bucket 6 ascends and descends to enable the valve core 7 to plug or open the liquid outlet channel 4, a conical guide section 8, an injection area 9 and a vacuum chamber 10 are sequentially arranged along the flow direction of steam, the vacuum chamber 10 is connected with a self-priming channel 11, a one-way valve 12 is arranged on the self-priming channel 11, and the self-priming channel 11 is connected with a water container 13. The self-suction inverted bucket type drain valve has slower flow speed and weak self-suction capability under the condition that the valve body 1 is internally provided with a water seal, and because the gravity of water needs to be overcome for self-suction, water cannot be sucked into the vacuum chamber 10 from the water container 13, and the drain valve works normally; when the condensed water in the valve body 1 is flashed into steam, the flow rate of the steam is remarkably accelerated, when the steam rapidly passes through the conical guide section 8, the injection area 9 and the vacuum chamber 10, a large suction force is generated in the vacuum chamber 10, the water in the water container 13 is sucked into the vacuum chamber 10 and enters the valve body 1 to rapidly form a water seal, so that the waste of a large amount of steam leakage is prevented, and the energy conservation and emission reduction are facilitated.

In this embodiment, in order to make the pipeline section 14 can quick replacement, the toper direction section 8 of different design parameters is changed according to the demand of flow and velocity of flow, injection zone 9 and vacuum chamber 10, adapt to the user demand under the different velocity of flow circumstances, guarantee can't inhale water from flourishing water container 13 under the normal velocity of flow, only under the condition that the water seal loses, steam just can inhale water from flourishing water container 13 under the fast flowing circumstances, can dismantle through the flange on the admission passageway 3 and be connected with pipeline section 14, toper direction section 8, injection zone 9 and vacuum chamber 10 set up on pipeline section 14, also can be connected through threaded connection or other modes that make things convenient for the dismouting between admission passageway 3 and the pipeline section 14 of course.

In this embodiment, the pipe section 14 is provided with an internal thread on the outer side of the self-suction passage 11, the check valve 12 is detachably screwed on the internal thread, the check valve 12 is connected with a water pipe 15, and the water pipe 15 is connected with the water container 13. Of course, the check valve 12 and the pipe section 14 may be connected by a flange connection or other means for facilitating the disassembly and assembly. The connecting mode enables the check valve to be disassembled and assembled from the pipe section, the original check valve can still be used after the pipe section is replaced, and cost is saved.

In this embodiment, the water container 13 is disposed below the self-priming channel 11, and the water container 13 is disposed below the self-priming channel 11 but not directly below the self-priming channel 11, so as to ensure that water in the water container 13 is sucked into the vacuum chamber 10, which needs to overcome the gravity of water, and the water in the water container 13 can be sucked into the vacuum chamber 10 only when a large suction force is generated, and the water in the water container 13 cannot be sucked into the vacuum chamber 10 when the drain valve is in normal operation and flows at a slow speed.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a from inhaling formula inverted bucket formula trap, includes valve body (1), be equipped with gas-liquid separation chamber (2), admission passageway (3) and drain passage (4) on valve body (1), drain passage (4) bottom is provided with rotor arm (5), rotor arm (5) rotate and are connected with inverted bucket (6), inverted bucket (6) cover in on admission passageway (3), be provided with case (7) on rotor arm (5), inverted bucket (6) go up and down so that case (7) shutoff or open drain passage (4), its characterized in that: the steam inlet channel (3) is sequentially provided with a conical guide section (8), a spraying area (9) and a vacuum chamber (10) along the steam flowing direction, the vacuum chamber (10) is connected with a self-suction channel (11), the self-suction channel (11) is provided with a one-way valve (12), and the self-suction channel (11) is connected with a water container (13).

2. The self-priming inverted bucket trap as defined in claim 1 wherein: the steam inlet channel (3) is provided with a detachable pipe section (14), and the conical guide section (8), the injection area (9) and the vacuum chamber (10) are arranged on the pipe section (14).

3. The self-priming inverted bucket trap as defined in claim 2 wherein: the pipe section (14) is detachably connected with the valve body (1) through a flange or threads.

4. A self priming inverted bucket trap as claimed in claim 2 or claim 3 wherein: the one-way valve (12) is detachably arranged on the pipe section (14), a water pipe (15) is connected to the one-way valve (12), and the water pipe (15) is connected with the water container (13).

5. The self-priming inverted bucket trap as defined in claim 1 wherein: the water container (13) is arranged below the self-suction channel (11).