Water pressure balance self-adjusting diaphragm type pressure tank

Abstract

The invention relates to the field of pressure containers, and particularly discloses a water pressure balance self-adjusting diaphragm type pressure tank. The rubber diaphragm is arranged in the outer tank body, the interior of the outer tank body is divided into the water chamber and the air chamber, the water chamber is connected with the water supply pipeline, when pressure in the water supply pipeline is increased, the rubber diaphragm deforms, the size of the water chamber is increased, the size of the air chamber is reduced, and then the pressure in the water supply pipeline is reduced; the impact of the water hammer effect on the water supply pipeline, the pressure switch and the pressure sensor is effectively relieved, the service life of the pressure switch and the service life of the pressure sensor are prolonged, the expanded water chamber can store more water, the starting frequency of the electric pump is reduced, the service life of the electric pump is greatly prolonged, and electric energy is saved; the intelligent adjusting barometer can obtain water pressure changes in time through the water pressure gauge, then controls the air pump to adjust air pressure in the air chamber, and prevents the rubber diaphragm from being excessively deformed and damaged due to pressure difference.

Description

Technical Field

[0001] The invention belongs to the technical field of pressure vessels, and in particular relates to a water pressure balanced self-regulating diaphragm pressure tank. Background Art

[0002] In domestic or industrial water supply systems, the water pressure in the water supply system may be unstable, which may cause water hammer effect inside the water supply system, causing pipes and containers that carry water flow to make noise and vibrate, affecting the user experience. In addition, the water hammer effect may also cause damage to pressure switches and pressure sensors, greatly increasing the risk of failure of pressure switches and pressure sensors. At the same time, due to the uncertain frequency of user use, there may be scenarios where the electric pump is frequently activated, which will shorten the life of the electric pump and increase energy consumption, both of which are not conducive to the long-term and stable use of the water supply system. Summary of the invention

[0003] The object of the present invention is to provide a water pressure balanced self-regulating diaphragm pressure tank to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A water pressure balanced self-adjusting diaphragm pressure tank, comprising:

[0006] An outer tank body, one end of which is fixedly connected to a water inlet and an outlet, and the other end of which is fixedly connected to an air inlet and an outlet;

[0007] An intelligent regulating barometer, wherein the intelligent regulating barometer is fixedly mounted on the outer tank body;

[0008] A rubber diaphragm, the rubber diaphragm is fixedly mounted in the middle of the inner wall of the outer tank body, dividing the inner chamber of the outer tank body into a water chamber and an air chamber, the water chamber is connected to the water inlet and outlet, and the air chamber is connected to the air inlet and outlet;

[0009] A water pressure gauge, which is fixedly mounted on the outer tank body and communicated with the water chamber;

[0010] The pressure switch is fixedly mounted on the outer wall of the outer tank and is connected to the air chamber.

[0011] Preferably, the water inlet and outlet are made of a four-point external screw pipe or a three-point internal screw pipe.

[0012] Preferably, the outer tank body is made of stainless steel, iron or polymer plastic.

[0013] Preferably, the intelligent regulating barometer has a built-in air pressure balance algorithm, and the intelligent regulating barometer is communicatively connected to an air pump, and the air pump is fixedly connected to the air inlet and outlet.

[0014] Preferably, the air pressure balance adjustment algorithm is expressed as:

[0015]

[0016] Where n(t) is the volume of the air pump filling and exhausting the air chamber, P 水t2 is the water pressure gauge reading at time t2, P 水t1 is the water pressure gauge reading at time t1, V 气室 is the volume of the air chamber, V 气体 is the molar volume of the gas being charged and discharged, C is the starting coefficient, R is the gas constant of the gas being charged and discharged, and T is the ambient temperature.

[0017] Preferably, the start-up coefficient C is expressed as:

[0018] C=|P 水 -P 气 |

[0019] Among them, P 水 Indicates the water pressure inside the water chamber, P 气 The constant C represents the internal air pressure of the air chamber. The starting coefficient C indicates the pressure difference between the water chamber and the air chamber on both sides of the rubber diaphragm. As the starting coefficient C increases, the expansion and deformation degree of the rubber diaphragm increases. The C value corresponding to the expansion and deformation limit of the rubber diaphragm is set to a constant C. 极值 , leaving a 10% safety factor range, the starting factor C is defined as a constant 0.9C 极值 , C value reaches 0.9C 极值 Afterwards, the air pump inflates and exhausts the air chamber.

[0020] Preferably, the air pressure balance algorithm operation steps include:

[0021] S1, water pressure gauge and intelligent regulating air pressure gauge collect the water pressure P inside the water chamber respectively 水 and the air pressure P inside the air chamber 气 ;

[0022] S2, the intelligent pressure gauge is used to calculate the C value. When the C value is less than 0.9C 极值 The air pump does not start;

[0023] S3, when C value is greater than 0.9C 极值 When the air pump is started, the pressure difference on both sides of the diaphragm is calculated through the air pressure balance adjustment algorithm, and the volume of gas that the air pump needs to inflate and exhaust is calculated. The air pump adjusts the gas pressure inside the air chamber to avoid excessive deformation and rupture of the rubber diaphragm.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The present invention arranges a rubber diaphragm inside the outer tank body to divide the inner part of the outer tank body into a water chamber and an air chamber, and connects the water chamber to the water supply pipe. When the pressure inside the water supply pipe increases, the rubber diaphragm deforms, increases the volume of the water chamber, and reduces the volume of the air chamber, thereby reducing the internal pressure of the water supply pipe, effectively alleviating the impact of the water hammer effect on the water supply pipe, the pressure switch and the pressure sensor, and increasing the life of the pressure switch and the pressure sensor. Moreover, the expanded water chamber can store more water, reducing the starting frequency of the electric pump, thereby greatly increasing the service life of the electric pump and saving electric energy. Moreover, when the pressure value inside the water supply pipe is too large, the intelligent regulating barometer can obtain the water pressure change in time through the water pressure gauge, and then control the air pump to adjust the air pressure inside the air chamber, thereby avoiding excessive deformation and damage of the rubber diaphragm due to the pressure difference, and can further extend the service life of the pressure tank, and maintain the stable operation of the entire water supply system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0027] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0028] Figure 3 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0029] Figure 4 It is a schematic diagram of the installation structure of the pressure tank, water pipe and air pump of the present invention;

[0030] In the figure: 1. Outer tank body; 2. Water inlet and outlet; 3. Air inlet and outlet; 4. Intelligent adjustable pressure gauge; 5. Rubber diaphragm; 6. Water chamber; 7. Air chamber; 8. Air pump; 9. Water pressure gauge; 10. Pressure switch. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Embodiment 1:

[0033] See also Figure 1 - Figure 4 As shown, a water pressure balanced self-regulating diaphragm pressure tank comprises:

[0034] An outer tank body 1, one end of the outer tank body 1 is fixedly connected with a water inlet and outlet 2, and the other end is fixedly connected with an air inlet and outlet 3, the water inlet and outlet 2 is made of a four-point external screw pipe or a three-point internal screw pipe, and the outer tank body 1 is made of stainless steel, iron or polymer material;

[0035] An intelligent regulating barometer 4, wherein the intelligent regulating barometer 4 is fixedly mounted on the outer tank body 1;

[0036] A rubber diaphragm 5, which is fixedly mounted on the middle of the inner wall of the outer tank body 1, and divides the inner chamber of the outer tank body 1 into a water chamber 6 and an air chamber 7, wherein the water chamber 6 is connected to the water inlet and outlet 2, and the air chamber 7 is connected to the air inlet and outlet 3;

[0037] A water pressure gauge 9, which is fixedly mounted on the outer tank body 1 and communicated with the water chamber 6;

[0038] The pressure switch 10 is fixedly mounted on the outer wall of the outer tank body 1 and is connected to the air chamber 7 .

[0039] As can be seen from the above, the outer tank body 1 is installed on the water supply pipe through the water inlet and outlet 2, and the water supply pipe is connected to the water chamber 6 through the water inlet and outlet 2. The water pressure gauge 9 displays the water pressure inside the water chamber 6, and the air chamber 7 is filled with gas. Since there are water pressure and air pressure in the water chamber 6 and the air chamber 7 respectively, the rubber diaphragm 5 will deform to the side with smaller pressure due to the change of pressure difference. When the pressure changes inside the water supply pipe, the rubber diaphragm 5 can deform to alleviate the trend of water pressure change, and effectively avoid the impact damage to the water supply pipe caused by the water hammer effect. The pressure switch 10 is connected with the air chamber 7, and the water pressure change inside the water chamber 6 is judged by the change of air pressure inside the air chamber 7. Moreover, there is only air inside the air chamber 7, which will not affect the structure of the pressure switch 10. There is water and some rust inside the water chamber 6, which may cause the pressure switch 10 to fail, and it can avoid the water body from rusting the pressure switch 10 after long-term use, so as to ensure the long-term high-precision use of the pressure switch 10.

[0040] Embodiment 2:

[0041] See also Figure 1 - Figure 4 As shown, a water pressure balanced self-regulating diaphragm pressure tank comprises:

[0042] An outer tank body 1, one end of the outer tank body 1 is fixedly connected with a water inlet and outlet 2, and the other end is fixedly connected with an air inlet and outlet 3, the water inlet and outlet 2 is made of a four-point external screw pipe or a three-point internal screw pipe, and the outer tank body 1 is made of stainless steel, iron or polymer material;

[0043] An intelligent regulating barometer 4, wherein the intelligent regulating barometer 4 is fixedly mounted on the outer tank body 1;

[0044] A rubber diaphragm 5, which is fixedly mounted on the middle of the inner wall of the outer tank body 1, and divides the inner chamber of the outer tank body 1 into a water chamber 6 and an air chamber 7, wherein the water chamber 6 is connected to the water inlet and outlet 2, and the air chamber 7 is connected to the air inlet and outlet 3;

[0045] A water pressure gauge 9, which is fixedly mounted on the outer tank body 1 and communicated with the water chamber 6;

[0046] The pressure switch 10 is fixedly mounted on the outer wall of the outer tank body 1 and is connected to the air chamber 7 .

[0047] As can be seen from the above, the outer tank body 1 is installed on the water supply pipe through the water inlet and outlet 2, and the water supply pipe is connected to the water chamber 6 through the water inlet and outlet 2. The water pressure gauge 9 displays the water pressure inside the water chamber 6, and the air chamber 7 is filled with gas. Since there are water pressure and air pressure in the water chamber 6 and the air chamber 7 respectively, the rubber diaphragm 5 will deform to the side with smaller pressure due to the change of pressure difference. When the pressure changes inside the water supply pipe, the rubber diaphragm 5 can deform to alleviate the trend of water pressure change, and effectively avoid the impact damage to the water supply pipe caused by the water hammer effect. The pressure switch 10 is connected with the air chamber 7, and the water pressure change inside the water chamber 6 is judged by the change of air pressure inside the air chamber 7. Moreover, there is only air inside the air chamber 7, which will not affect the structure of the pressure switch 10. There is water and some rust inside the water chamber 6, which may cause the pressure switch 10 to fail, and it can avoid the water body from rusting the pressure switch 10 after long-term use, so as to ensure the long-term high-precision use of the pressure switch 10.

[0048] Since the changing trend of the water pressure value inside the water supply pipeline is uncertain, if the air filling volume inside the air chamber 7 remains unchanged, when the water pressure inside the water chamber 6 is too high, the rubber diaphragm 5 may expand excessively to one side of the air chamber 7 and cause damage. To avoid damage to the rubber diaphragm 5, it is necessary to adjust the air pressure of the air chamber 7 in real time according to the water pressure conditions. The intelligent regulating barometer 4 has a built-in air pressure balance algorithm, and the intelligent regulating barometer 4 is communicatively connected to an air pump 8, and the air pump 8 is fixedly connected to the air inlet and outlet 3.

[0049] The air pressure balance adjustment algorithm formula is expressed as:

[0050]

[0051] Wherein, nt is the volume of the air pump 8 filling the air chamber 7, P 水t2 is the reading of water pressure gauge 9 at time t2, P 水t1 is the reading of water pressure gauge 9 at time t1, V 气室 is the volume of air chamber 7, V 气体 is the molar volume of the gas being charged and discharged, C is the starting coefficient, R is the gas constant of the gas being charged and discharged, and T is the ambient temperature.

[0052] After the pressure tank operating environment reaches the starting coefficient C value, the air pump 8 is started, and V is determined according to the properties of the gas filled into the air pump 8 and the ambient temperature. 气体 , R value and T value, and then obtain the internal pressure value P of the water chamber 6 before and after the interval time according to the water pressure gauge 9 水t1 and P 水t1 , V 气室 It is a fixed value determined by the structure of the pressure tank. The n value is calculated based on these parameters. The air pump 8 is controlled by the intelligent regulating barometer 4 to inflate and exhaust the air into the air chamber 7. When the water pressure decreases, the air pump 8 exhausts the air outwards. When the water pressure rises, the air pump 8 inflates the air into the air chamber 7.

[0053] The starting coefficient C formula is expressed as:

[0054] C=|P 水 -P 气 |

[0055] Among them, P 水 Indicates the water pressure inside the water chamber 6, P 气 C represents the internal air pressure of the air chamber 7. The start-up coefficient C represents the pressure difference between the water chamber 6 and the air chamber 7 on both sides of the rubber diaphragm 5. As the start-up coefficient C increases, the expansion and deformation degree of the rubber diaphragm 5 increases. The C value corresponding to the expansion and deformation limit of the rubber diaphragm 5 is set to be a constant C. 极值 , when C breaks through C 极值 After that, the rubber diaphragm 5 will rupture. To avoid such a situation, a 10% safety factor range is reserved and the startup factor C is defined as a constant of 0.9C. 极值 , C value reaches 0.9C 极值 Afterwards, the air pump 8 inflates the air into the air chamber 7, thereby controlling the deformation degree of the rubber diaphragm 5 within a controllable range.

[0056] The air pressure balance algorithm operation steps include:

[0057] S1, water pressure gauge 9 and intelligent regulating air pressure gauge 4 respectively collect the water pressure P inside the water chamber 6 水 and the air pressure P inside the air chamber 7 气 ;

[0058] S2, the intelligent pressure gauge 4 calculates the C value, when the C value is less than 0.9C 极值 When , the air pump 8 does not start;

[0059] S3, when C value is greater than 0.9C 极值 When the air pump 8 is started, the pressure difference on both sides of the diaphragm is calculated through the air pressure balance adjustment algorithm, and the gas volume that the air pump 8 needs to inflate and exhaust is calculated. The air pump 8 adjusts the internal gas pressure of the air chamber 7 to avoid excessive deformation and rupture of the rubber diaphragm 5.

[0060] During application, the user installs the outer tank body 1 on the water supply system pipeline and connects the water supply pipeline with the water inlet and outlet 2. When the water pressure inside the water supply pipeline surges, the water inside the water supply pipeline enters the water chamber 6 through the water inlet and outlet 2. As the water flow inside the water chamber 6 increases, the rubber diaphragm 5 expands and deforms toward the air chamber 7, increasing the volume of the water chamber 6 and compressing the volume of the air chamber 7, thereby alleviating the water pressure inside the water supply pipeline and preventing the water hammer effect caused by the surge in water pressure from seriously damaging the pipeline, pressure switch and pressure sensor. At the same time, in order to avoid the water pressure being much higher than the air pressure guide In order to prevent the rubber diaphragm 5 from being excessively deformed and damaged, the intelligent regulating pressure gauge 4 will collect the readings of the water pressure gauge 9 to determine the pressure difference on both sides of the rubber diaphragm 5. If the pressure difference is higher than the C value, the intelligent regulating pressure gauge 4 will control the air pump 8 to start and inflate the air chamber 7 to reduce the pressure difference on both sides of the rubber diaphragm 5 and avoid the rubber diaphragm 5 from being excessively deformed and damaged. Similarly, when the water pressure decreases, the intelligent regulating pressure gauge 4 controls the air pump 8 to pump air outwards to reduce the air pressure inside the air chamber 7, which can also reduce the pressure difference on both sides of the rubber diaphragm 5 and avoid the rubber diaphragm 5 from being excessively deformed and damaged.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0062] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

Claims

1. A water pressure balanced self-adjusting diaphragm pressure tank, It is characterized in that include: An outer tank body (1), wherein one end of the outer tank body (1) is fixedly connected to a water inlet and outlet (2), and the other end is fixedly connected to an air inlet and outlet (3); An intelligent regulating pressure gauge (4), wherein the intelligent regulating pressure gauge (4) is fixedly mounted on the outer tank body (1); A rubber diaphragm (5), the rubber diaphragm (5) being fixedly mounted on the middle of the inner wall of the outer tank body (1), dividing the inner chamber of the outer tank body (1) into a water chamber (6) and an air chamber (7), the water chamber (6) being in communication with the water inlet and outlet (2), and the air chamber (7) being in communication with the air inlet and outlet (3); A water pressure gauge (9), the water pressure gauge (9) is fixedly mounted on the outer tank body (1) and is in communication with the water chamber (6); A pressure switch (10) is fixedly mounted on the outer wall of the outer tank body (1) and is connected to the air chamber (7).

2. A water pressure balanced self-regulating diaphragm pressure tank according to claim 1, Features: The water inlet and outlet (2) are selected from a four-point external screw pipe or a three-point internal screw pipe.

3. A water pressure balanced self-regulating diaphragm pressure tank according to claim 1, Features: The outer tank body (1) is made of stainless steel, iron or polymer material.

4. A water pressure balanced self-regulating diaphragm pressure tank according to claim 3, Features: The intelligent regulating barometer (4) has a built-in barometric pressure balance algorithm, and the intelligent regulating barometer (4) is communicatively connected to an air pump (8), and the air pump (8) is fixedly connected to the air inlet and outlet (3).

5. A water pressure balanced self-regulating diaphragm pressure tank according to claim 4, Features: The air pressure balance adjustment algorithm formula is expressed as: Where n(t) is the volume of the air pump (8) filling the air chamber (7), P 水t2 is the reading of the water pressure gauge (9) at time t2, P 水t1 is the reading of the water pressure gauge (9) at time t1, V 气室 is the volume of the air chamber (7), V 气体 is the molar volume of the gas being charged and discharged, C is the starting coefficient, R is the gas constant of the gas being charged and discharged, and T is the ambient temperature.

6. A water pressure balanced self-regulating diaphragm pressure tank according to claim 5, Features: The starting coefficient C formula is expressed as: C=|P 水 -P 气 Among them, P 水 represents the water pressure inside the water chamber (6), P 气 C represents the internal air pressure of the air chamber (7). The starting coefficient C represents the pressure difference between the water chamber (6) and the air chamber (7) on both sides of the rubber diaphragm (5). As the starting coefficient C increases, the expansion deformation degree of the rubber diaphragm (5) increases. The C value corresponding to the expansion deformation limit of the rubber diaphragm (5) is set to be a constant C. 极值 , leaving a 10% safety factor range, the starting factor C is defined as a constant 0.9C 极值 , C value reaches 0.9C 极值 Afterwards, the air pump (8) inflates and deflates the air chamber (7).

7. A water pressure balanced self-regulating diaphragm pressure tank according to claim 6, Features: The air pressure balance algorithm operation steps include: S1, the water pressure gauge (9) and the intelligent regulating air pressure gauge (4) respectively collect the water pressure P inside the water chamber (6) 水 and the air pressure P inside the air chamber (7) 气 ; S2. The intelligent pressure gauge (4) calculates the C value. When the C value is less than 0.9C 极值 When the air pump (8) is not started; S3, when C value is greater than 0.9C 极值 When the air pump (8) is started, the pressure difference on both sides of the diaphragm is calculated by the air pressure balance adjustment algorithm, and the volume of gas that the air pump (8) needs to inflate or exhaust is calculated. The air pump (8) adjusts the internal gas pressure of the air chamber (7) to avoid excessive deformation and rupture of the rubber diaphragm (5).

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