Buffer tank for heptafluoropropane

Abstract

The utility model relates to the technical field of buffer tanks, in particular to a buffer tank for heptafluoropropane, which comprises a tank body, a feed pipe used for adding liquid heptafluoropropane into the tank body is arranged at the upper end of the tank body, an electromagnetic valve is arranged on the feed pipe, a separator is arranged in the tank body, and the separator is connected with the tank body. A partition piece is arranged in the buffer tank, the partition piece divides the buffer tank into a standing area located on the upper portion and a storage area located on the lower portion, the standing area and the storage area are communicated through a flow guide channel, and a defoaming assembly used for removing foam is arranged in the standing area. And the foam entering the storage area is reduced, the defoaming is realized under the action of the defoaming assembly, and the defoaming effect is better by combining static and dynamic defoaming.

Description

Technical Field

[0001] The utility model relates to the technical field of buffer tanks, in particular to a buffer tank for heptafluoropropane. Background Art

[0002] A buffer tank is a device widely used in industrial production. The buffer tank can stabilize the system pressure and prevent damage to the equipment due to pressure fluctuations. For example, HFC-227ea is commonly used in clean gas fire extinguishing systems. The HFC-227ea system usually stores high-pressure gas or liquid HFC-227ea. The buffer tank can help stabilize the system pressure and prevent system failure or misspraying due to pressure fluctuations. In large-scale fire extinguishing systems, the buffer tank can store additional HFC-227ea gas for emergency use. When the gas in the main gas tank is exhausted or the pressure drops, the gas in the buffer tank can be used to continue to maintain the fire extinguishing effect. When liquid HFC-227ea is released from the storage container, the pressure may be very high. The buffer tank can help regulate and stabilize this high pressure to ensure that the system operates within a safe pressure range.

[0003] When liquid HFC-227ea enters the buffer tank, gases (such as air) are dissolved or mixed into the HFC-227ea. When these gases are released due to changes in temperature and pressure, foam will be formed. Or, when the liquid is disturbed due to excessive inflow speed or improper inflow method, foam will be generated in the solution. If there is foam in the HFC-227ea liquid, the foam will occupy a certain space, reducing the actual amount of available HFC-227ea, thereby reducing the fire extinguishing efficiency. In addition, the foam may block the nozzle, making it impossible to evenly distribute the fire extinguishing agent to the entire protected area.

[0004] Therefore, we propose a buffer tank for HFC-227ea to solve the above problems. Utility Model Content

[0005] The utility model provides a buffer tank for heptafluoropropane, which solves the problem in the prior art that foam in the buffer tank cannot be eliminated and affects the use effect.

[0006] The technical problem solved by the present invention is achieved by the following technical solutions:

[0007] A buffer tank for heptafluoropropane, comprising a tank body, a feed pipe for adding liquid heptafluoropropane to the tank body provided at the upper end of the tank body, the feed pipe being provided with a solenoid valve, a partition provided inside the tank body, the partition dividing the buffer tank into a static area located above and a storage area located below, the static area and the storage area being connected by a flow guide channel, and a defoaming component for removing foam provided in the static area;

[0008] The defoaming assembly includes a buoyancy plate, a puncture member provided on the buoyancy plate, and a driving member for driving the buoyancy plate to rotate. The output end of the driving member is connected to the buoyancy plate through a multi-stage telescopic member to achieve the synchronous rise and fall of the buoyancy plate following the liquid level in the static area.

[0009] Preferably, the puncturing member includes a receiving rod provided on the buoyancy plate and a connecting column provided on the receiving rod, and a plurality of puncturing needles with the conical tips facing outwards are provided on the outer wall of the connecting column.

[0010] Preferably, it also includes a liquid level control component, which includes a pressure sensor and a controller electrically connected to the pressure sensor, and the pressure sensor is located on the inner top wall of the tank body. The controller is used to control the opening and closing of the solenoid valve after receiving the signal from the pressure sensor.

[0011] Preferably, a mounting tube is connected to the inner top wall of the tank body, a resistance rod is sealingly and slidably connected to the mounting tube, and the pressure sensor is mounted on the inner top wall of the mounting tube.

[0012] Preferably, the guide channel is located at the center of the partition, and the output end of the guide channel extends to the bottom of the storage area, and the inner diameter of the partition gradually decreases from top to bottom.

[0013] Preferably, the multi-stage telescopic member is composed of a plurality of connecting rods that are slidably sleeved on each other, and the cross-section of the connecting rod is polygonal.

[0014] The beneficial effects of the utility model are as follows: liquid heptafluoropropane is allowed to stay briefly in the static area, and under the action of gravity, the liquid heptafluoropropane enters the storage area through the diversion channel, wherein the foam generated floats on the surface, and under the action of the defoaming component in the static area, the puncturing member punctures the bubbles to perform defoaming treatment, and the defoaming effect is better by combining static and dynamic defoaming. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the implementation scheme of the present invention or the technical scheme in the prior art, the drawings required for use in the implementation scheme or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation schemes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 The isometric structural diagram provided for this utility model is:

[0017] Figure 2 The cross-sectional structure diagram provided by the utility model is as follows:

[0018] Figure 3Schematic diagram of the defoaming component structure provided by the utility model:

[0019] Figure 4 A schematic diagram of the installation position of the pressure sensor provided by the present utility model;

[0020] Figure 5 The utility model provides a structural schematic diagram of a multi-stage telescopic member.

[0021] In the figure, 1. tank body; 11. feed pipe; 12. solenoid valve; 13. discharge pipe; 14. safety valve; 2. partition; 21. static area; 22. storage area; 3. diversion channel; 4. buoyancy plate; 5. puncture part; 51. receiving rod; 52. connecting column; 53. puncture needle; 6. driving part; 61. multi-stage telescopic part; 62. connecting rod; 7. pressure sensor; 71. controller; 8. mounting tube; 81. resistance rod. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0023] Reference Figures 1-4 As shown, a buffer tank for heptafluoropropane includes a tank body 1. A feed pipe 11 for adding liquid heptafluoropropane into the tank body 1 is provided at the upper end of the tank body 1. A solenoid valve 12 is provided on the feed pipe 11. A discharge pipe 13 is provided at the bottom of the tank body 1 for discharging heptafluoropropane. At the same time, a safety valve 14 is also provided on the tank body 1 to avoid the risk of overpressure of the tank body 1. These are all prior arts and will not be described in detail here. Those skilled in the art should know that when liquid heptafluoropropane is injected into the tank body 1, foam may be generated due to liquid disturbance or temperature and pressure. If the liquid heptafluoropropane contains too much foam, it may occupy a certain volume, resulting in insufficient heptafluoropropane dosage actually sprayed into the protected area, and the expected effect cannot be achieved. Fire extinguishing concentration, and can cause fluctuations in system pressure, increase pressure shock to pipelines and equipment, and cause equipment damage and other problems. For this reason, the present invention uses a new type of partition 2 inside the tank body 1, which divides the tank body 1 into a static area 21 located at the top and a storage area 22 located at the bottom. The static area 21 and the storage area 22 are connected by a diversion channel 3. A small part of the liquid heptafluoropropane entering the tank body 1 will enter the storage area 22 through the diversion channel 3, and most of it will be temporarily stored in the static area 21. The foam generated therein will float on the top, reducing the foam from entering the storage area 22. At the same time, in order to eliminate the foam in the static area 21, a defoaming component for removing the foam is provided in the static area 21;

[0024] Specifically, the defoaming assembly includes a buoyancy plate 4, a puncture member 5 provided on the buoyancy plate 4, and a driving member 6 for driving the buoyancy plate 4 to rotate. The output end of the driving member 6 is connected to the buoyancy plate 4 through a multi-stage telescopic member 61, which is used to realize the synchronous rise and fall of the buoyancy plate 4 following the liquid level in the static area 21. Under the action of buoyancy, the buoyancy plate 4 floats above the liquid surface of the liquid heptafluoropropane. As the amount of liquid heptafluoropropane transported from the feed pipe 11 to the tank body 1 gradually increases, the liquid in the storage area 22 is output through the guide channel 3. The slow increase of HFC-227ea will cause the liquid level in the static area 21 to gradually increase. At this time, the buoyancy plate 4 follows the increase of the liquid level and drives the puncture member 5 to rise synchronously under the action of the multi-stage telescopic member 61. At the same time, the driving member 6 drives the buoyancy plate 4 to rotate, so that the buoyancy plate 4 drives the puncture member 5 to rotate, and the foam floating on the top is defoamed. In this way, the defoaming component and the static area 21 cooperate to achieve a static and dynamic combination of defoaming treatment to reduce the occurrence of foam. The driving member 6 can be a device such as a reduction motor that can drive the buoyancy plate 4 to rotate.

[0025] Furthermore, the puncturing member 5 includes a receiving rod 51 provided on the buoyancy plate 4 and a connecting column 52 provided on the receiving rod 51. The outer wall of the connecting column 52 is provided with a plurality of puncturing needles 53 with the conical tip facing outward. When the buoyancy plate 4 drives the puncturing member 5 to rotate, the conical tip of the puncturing needle 53 contacts the foam, causing the bubbles to burst, thereby performing defoaming treatment.

[0026] Among them, the multi-stage telescopic member 61 is composed of a plurality of connecting rods 62 that are slidably mounted on each other, and the cross-section of the connecting rod 62 is a polygon. When the liquid level in the static area 21 gradually rises, the buoyancy plate 4 gradually rises with the liquid level, and will compress the multi-stage telescopic member 61, so that the distance between the two adjacent connecting rods 62 becomes shorter, thereby realizing the telescopic function of the multi-stage telescopic member 61. The cross-section of the multi-stage telescopic member 61 is a polygon, which can avoid rotation between the connecting rods 62. When the output end of the driving member 6 is connected to the multi-stage telescopic member 61, the buoyancy plate 4 can be driven to rotate by the multi-stage telescopic member 61.

[0027] Furthermore, it also includes a liquid level control component, which includes a pressure sensor 7 and a controller 71 electrically connected to the pressure sensor 7. The pressure sensor 7 is located on the inner top wall of the tank body 1. The controller 71 is used to control the opening and closing of the solenoid valve 12 after receiving the signal from the pressure sensor 7. When the buoyancy plate 4 moves upward synchronously with the rise of the liquid level and conflicts with the pressure sensor 7, it indicates that the buoyancy plate 4 moves to the upper end of the tank body 1. In order to avoid contact between the puncture member 5 and the tank body 1, the pressure sensor 7 transmits a signal to the controller 71. The controller 71 controls the solenoid valve 12 electrically connected thereto to close, stops the feed pipe 11 from feeding into the static area 21, waits for the liquid HFC-22ea in the static area 21 to gradually be fed into the storage area 22, and then opens the solenoid valve 12 for feeding after the liquid level drops.

[0028] Among them, a mounting tube 8 is connected to the inner top wall of the tank body 1, and a resistance rod 81 is sealed and slidably connected to the mounting tube 8. The pressure sensor 7 is installed on the inner top wall of the mounting tube 8 and will move downward under the action of the resistance rod 81's own gravity. When the resistance rod 81 collides with the rising buoyancy plate 4, the resistance rod 81 will slide upward and conflict with the pressure sensor 7, causing the pressure sensor 7 to generate a pressure signal. The pressure sensor 7 is installed in the mounting tube 8 to prevent the pressure sensor 7 from being corroded by liquid heptafluoropropane and damaged.

[0029] Furthermore, the diversion channel 3 is located at the center of the partition 2, and the inner diameter of the diversion channel 3 is smaller than the inner diameter of the feed pipe 11, so that the liquid in the static area 21 can flow slowly when flowing into the storage area 22, and the output end of the diversion channel 3 extends to the bottom of the storage area 22, and will not generate a large impact force with the storage area 22, thereby reducing the generation of foam in the storage area 22. The inner diameter of the partition 2 gradually decreases from top to bottom, so that the liquid HFC-22a in the static area 21 can accumulate at the input end of the diversion channel 3 for diversion.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A buffer tank for heptafluoropropane, comprising a tank body (1), wherein the upper end of the tank body (1) is provided with a feed pipe (11) for adding liquid heptafluoropropane into the tank body (1), and the feed pipe (11) is provided with a solenoid valve (12), characterized in that: A partition (2) is provided inside the tank body (1), and the partition (2) divides the buffer tank into a static area (21) located at the top and a storage area (22) located at the bottom. The static area (21) and the storage area (22) are connected via a flow guide channel (3). A defoaming component for removing foam is provided in the static area (21); The defoaming assembly comprises a buoyancy plate (4), a puncturing member (5) provided on the buoyancy plate (4), and a driving member (6) for driving the buoyancy plate (4) to rotate. The output end of the driving member (6) is connected to the buoyancy plate (4) via a multi-stage telescopic member (61), so as to enable the buoyancy plate (4) to rise and fall synchronously with the liquid level in the static area (21).

2. A buffer tank for heptafluoropropane according to claim 1, characterized in that: The puncturing member (5) comprises a receiving rod (51) provided on the buoyancy plate (4) and a connecting column (52) provided on the receiving rod (51); a plurality of puncturing needles (53) with their conical tips facing outwards are provided on the outer wall of the connecting column (52).

3. A buffer tank for heptafluoropropane according to claim 1, characterized in that: The tank body (1) further comprises a liquid level control component, wherein the liquid level control component comprises a pressure sensor (7) and a controller (71) electrically connected to the pressure sensor (7), wherein the pressure sensor (7) is located on the inner top wall of the tank body (1), and the controller (71) is used to control the opening and closing of the solenoid valve (12) after receiving a signal from the pressure sensor (7).

4. A buffer tank for heptafluoropropane according to claim 3, characterized in that: A mounting tube (8) is connected to the inner top wall of the tank body (1), a resisting rod (81) is sealingly and slidably connected to the mounting tube (8), and the pressure sensor (7) is mounted on the inner top wall of the mounting tube (8).

5. A buffer tank for heptafluoropropane according to claim 1, characterized in that: The guide channel (3) is located at the center of the partition (2), and the output end of the guide channel (3) extends to the bottom of the storage area (22), and the inner diameter of the partition (2) gradually decreases from top to bottom.

6. A buffer tank for heptafluoropropane according to claim 1, characterized in that: The multi-stage telescopic member (61) is composed of a plurality of connecting rods (62) that are slidably sleeved on each other, and the cross-section of the connecting rods (62) is polygonal.

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