Water pressure regulating device and heating capacity detection device having the same

Abstract

This invention discloses a water pressure regulating device and a heating capacity detection device having the same. The water pressure regulating device includes a water tank, an inlet pipe, an outlet pipe, a hydraulic component, and a regulating component. The hydraulic component is located within a housing space and between the inlet and outlet pipes. An accumulator is connected to a first hydraulic pipe and a second hydraulic pipe. The first hydraulic pipe communicates with the inlet pipe but is spaced apart from both ends of the inlet pipe. A floating piston is configured such that when the first piston moves in a direction away from the inlet pipe, a force-driven piston drives the floating piston to move in the same direction away from the inlet pipe. The regulating component includes a transmission component and a ball valve. The ball valve is located inside the outlet pipe and is used to regulate the flow rate of the outlet pipe. The input end of the transmission component is connected to the second piston, and the output end of the transmission component is connected to the ball valve. According to the water pressure regulating device of this invention, it can compensate for the typical nonlinear pulsation characteristics of the outlet water pressure of thermal power units, and the regulating process is relatively simple and reliable.

Description

Technical Field

[0001] This invention relates to the field of pressure regulation technology, and in particular to a water pressure regulating device and a heating capacity detection device having the same. Background Technology

[0002] Thermal power units use coal, oil, or combustible gases as fuel to heat water in a boiler, which then generates electricity by using pressurized steam to drive a turbine. Because the water pressure has nonlinear pulsations, the flow rate of the outlet pipe needs to be adjusted in real time, and the pulsations are delayed, which can easily lead to continuous pressure oscillations and unstable water output. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a water pressure regulating device that can compensate for the typical nonlinear pulsation characteristics of the outlet water pressure of thermal power units, and the regulating process is relatively simple and reliable.

[0004] The present invention also proposes a heating capacity detection device, wherein the vehicle includes the aforementioned water pressure regulating device.

[0005] According to an embodiment of the present invention, a water pressure regulating device is used in a thermal power unit and includes: a water tank defining a receiving space; an inlet pipe, one end of which is disposed within the receiving space, and the other end extending out of the receiving space and connected to the water outlet system of the thermal power unit; an outlet pipe, one end of which is disposed within the receiving space, and the other end extending out of the receiving space; and a hydraulic assembly disposed within the receiving space and between the inlet pipe and the outlet pipe, the hydraulic assembly including an accumulator, the accumulator including a sealing pipe, a force-receiving piston and a floating piston being slidably connected within the sealing pipe, the accumulator being connected to a first hydraulic pipe and a second hydraulic pipe, the first hydraulic pipe communicating with the inlet pipe and spaced apart from both ends of the inlet pipe, the first hydraulic pipe... A first piston is provided inside the pressure pipe, and the first piston is slidably connected to the first hydraulic pipe in a sealed manner. A first chamber between the first piston and the force-receiving piston is filled with hydraulic oil. A second piston is provided inside the second hydraulic pipe, and the second piston is slidably connected to the second hydraulic pipe in a sealed manner. A second chamber between the second piston and the floating piston is filled with hydraulic oil. The floating piston is configured such that when the first piston moves in a direction away from the water inlet pipe, the force-receiving piston drives the floating piston to move in a direction away from the water inlet pipe. An adjustment assembly is provided, which includes a transmission component and a ball valve. The ball valve is located inside the water outlet pipe and is used to adjust the flow rate of the water outlet pipe. The input end of the transmission component is connected to the second piston, and the output end of the transmission component is connected to the ball valve.

[0006] According to the water pressure regulating device of the present invention, by setting up a hydraulic component and a regulating component, the hydraulic component can adjust the flow rate in the outlet pipe according to the change of water pressure, and the change of the opening degree of the ball valve corresponds to the change of water pressure, which can compensate for the typical nonlinear pulsation characteristics of the outlet water pressure of the thermal power unit, thereby achieving an approximately linear flow output, thereby realizing the conversion of water pressure signal into mechanical displacement signal, and the regulation process is relatively simple and reliable.

[0007] In some embodiments of the present invention, the transmission component includes: a rack connected to and moving synchronously with the second piston; a gear meshing with the rack; the ball valve includes a valve body and a valve core, the valve body being disposed within the outlet pipe; the valve core being a V-shaped port ball core, the valve core being rotatably disposed within the valve body and connected to the gear.

[0008] In some embodiments of the present invention, a nitrogen layer is filled between the floating piston and the force-receiving piston.

[0009] In some embodiments of the present invention, the hydraulic assembly further includes a top box, wherein the transmission member is disposed within the top box and movably connected to the top box.

[0010] In some embodiments of the present invention, the water pressure regulating device further includes: an exhaust assembly, the exhaust assembly being disposed at the top of the water tank, the exhaust assembly having a connecting hole for connecting the accommodating space and the exhaust assembly.

[0011] In some embodiments of the present invention, the exhaust assembly includes: an exhaust pipe disposed on the top side of the water tank and communicating with the communicating hole, the top end of the exhaust pipe having an exhaust hole; an inner cylinder disposed inside the exhaust pipe and coaxially arranged with the exhaust pipe, the inner cylinder being connected to the inner top wall of the exhaust pipe, the exhaust hole communicating with the inner cylinder; and a sealing plug, the lower end of the inner cylinder being open, the sealing plug being disposed on the lower side of the inner cylinder, the sealing plug being slidably connected to the inner wall of the exhaust pipe in the vertical direction, used to block or open the open end of the lower end of the inner cylinder, the lower end of the inner wall of the exhaust pipe having an exhaust groove, the upper end of the exhaust groove being spaced apart from the lower end of the inner cylinder in the vertical direction, the outer peripheral wall of the sealing plug having a guide groove, and when the sealing plug blocks the inner cylinder, the guide groove communicating with both the exhaust groove and the inner cylinder.

[0012] In some embodiments of the present invention, the exhaust assembly further includes: a sealing disc, which is slidably disposed within the inner cylinder in a vertical direction, the sealing disc having a first limit position and a second limit position; a first one-way valve, which is disposed below the first limit position and the second limit position, the first one-way valve allowing airflow only from the inside of the inner cylinder to the exhaust area between the inner cylinder and the exhaust pipe; a second one-way valve, which is disposed above the first limit position and the second limit position, the second one-way valve allowing airflow only from the exhaust area between the inner cylinder and the exhaust pipe to the inside of the inner cylinder; a first elastic member, which is connected to the sealing disc and the sealing plug, for driving the sealing plug to move downward; and a limiting member, which is disposed above the sealing disc and adapted to abut against the sealing disc.

[0013] In some embodiments of the present invention, the exhaust assembly further includes: a guide post, which is non-cylindrical and extends in a vertical direction. The top end of the guide post is connected to the top wall of the inner cylinder. The guide post is slidably connected to both the sealing plug and the sealing disc. The first elastic element is sleeved outside the guide post.

[0014] In some embodiments of the present invention, the exhaust assembly further includes: a second elastic member, the limiting member including a limiting cylinder and a limiting disc, the upper end of the limiting cylinder being connected to the top wall of the inner cylinder, the limiting disc being connected to the lower end of the limiting cylinder and to the inner peripheral wall of the inner cylinder, the limiting disc being adapted to abut against the sealing disc, at least a portion of the second elastic member being disposed inside the limiting cylinder, the second elastic member being sleeved outside the guide post and connected to both the top wall of the inner cylinder and the sealing disc, for driving the sealing disc to move downward.

[0015] The heating capacity detection device according to an embodiment of the present invention includes the above-mentioned water pressure regulating device and detection component. The detection component includes a pressure sensor and a constant pressure water valve. The constant pressure water valve is fixedly connected to the water inlet pipe. There are two pressure sensors, which are respectively located at both ends of the ball valve.

[0016] According to the heating capacity detection device of the present invention, by setting up a hydraulic component and an adjustment component, the hydraulic component can adjust the flow rate in the outlet pipe according to the change of water pressure, and the change of the opening degree of the ball valve corresponds to the change of water pressure, which can compensate for the typical nonlinear pulsation characteristics of the outlet water pressure of the thermal power unit, thereby achieving an approximately linear flow output, thereby realizing the conversion of water pressure signal into mechanical displacement signal, and the adjustment process is relatively simple and reliable.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a cross-sectional view of a heating capacity testing device according to an embodiment of the present invention; Figure 2 This is a cross-sectional view of a portion of the structure of the water pressure regulating device according to an embodiment of the present invention, including the water inlet pipe, hydraulic component, regulating component, and water outlet pipe. Figure 3 This is a perspective view of a portion of the structure of the water inlet pipe, hydraulic components, and regulating components of the water pressure regulating device according to an embodiment of the present invention. Figure 4 This is a perspective view of a heating capacity testing device according to an embodiment of the present invention; Figure 5 This is an internal view of a portion of the structure of the regulating component and the outlet pipe of the water pressure regulating device according to an embodiment of the present invention. Figure 6 This is a cross-sectional view of the exhaust assembly of the water pressure regulating device according to an embodiment of the present invention; Figure 7 This is another cross-sectional view of the exhaust assembly of the water pressure regulating device according to an embodiment of the present invention.

[0019] Figure label: 100. Heating capacity testing device; 10. Water pressure regulating device; 1. Water tank; 11. Containment space; 12. Connecting hole; 2. Inlet pipe; 21. Outlet pipe; 3. Water outlet pipe; 4. Hydraulic components; 41. Accumulator; 411. Sealing pipe; 412. Forced piston; 413. Floating piston; 414. Nitrogen layer; 42. First hydraulic pipe; 421. First piston; 43. Second hydraulic pipe; 431. Second piston; 44. Top box; 5. Adjustment assembly; 51. Transmission component; 511. Rack; 512. Gear; 52. Ball valve; 521. Valve body; 522. Valve core; 523. Valve stem; 6. Exhaust assembly; 61. Exhaust pipe; 611. Exhaust port; 612. Exhaust groove; 613. Limiting ring; 62. Inner cylinder; 63. Sealing plug; 631. Air guide groove; 64. Sealing disc; 65. First check valve; 66. Second check valve; 67. Limiting element; 671. Limiting cylinder; 672. Limiting disc; 68. Guide post; 681. First elastic element; 682. Second elastic element; 683. Limiting plate; 20. Detection components; 201. Pressure sensor; 202. Constant pressure water valve. Detailed Implementation

[0020] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0021] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] The water pressure regulating device 10 according to an embodiment of the present invention will now be described with reference to the accompanying drawings.

[0023] like Figure 1 and Figure 2 As shown, the water pressure regulating device 10 according to an embodiment of the present invention includes a water tank 1, an inlet pipe 2, an outlet pipe 3, a hydraulic component 4, and an regulating component 5.

[0024] Specifically, the water pressure regulating device 10 is used in thermal power units, which have a heating function. Hot water in the thermal power unit can flow to the place where heat demand is required to meet the heat demand.

[0025] Water tank 1 defines a receiving space 11. One end of inlet pipe 2 is located inside the receiving space 11, and the other end extends out of the receiving space 11 and is connected to the water outlet system of the thermal power unit. One end of outlet pipe 3 is located inside the receiving space 11, and the other end extends out of the receiving space 11. Hot water in the water outlet system of the thermal power unit flows to water tank 1. Water tank 1 can be used to contain hot water. Inlet pipe 2 is used to allow hot water to flow into the receiving space 11, and outlet pipe 3 is used to allow hot water to flow out to the part with heat demand.

[0026] like Figure 1 and Figure 2 As shown, the hydraulic assembly 4 is located within the accommodating space 11 and between the inlet pipe 2 and the outlet pipe 3. The hydraulic assembly 4 includes an accumulator 41, which includes a sealing pipe 411. A force-receiving piston 412 and a floating piston 413 are slidably connected within the sealing pipe 411. The accumulator 41 is connected to a first hydraulic pipe 42 and a second hydraulic pipe 43. The first hydraulic pipe 42 is connected to the inlet pipe 2 and spaced apart from both ends of the inlet pipe 2. A first piston 421 is provided inside the first hydraulic pipe 42. The first piston 421 and the first hydraulic pipe 43 are connected to the first hydraulic pipe 43. The pressure pipe 42 is sealed and slidably connected. The first chamber between the first piston 421 and the force-receiving piston 412 is filled with hydraulic oil. The second hydraulic pipe 43 is provided with a second piston 431. The second piston 431 is sealed and slidably connected with the second hydraulic pipe 43. The second chamber between the second piston 431 and the floating piston 413 is filled with hydraulic oil. The floating piston 413 is configured such that when the first piston 421 moves in a direction away from the water inlet pipe 2, the force-receiving piston 412 drives the floating piston 413 to move in a direction away from the water inlet pipe 2.

[0027] The regulating component 5 includes a transmission component 51 and a ball valve 52. The ball valve 52 is located inside the water outlet pipe 3 and is used to regulate the flow rate of the water outlet pipe 3. The input end of the transmission component 51 is connected to the second piston 431, and the output end of the transmission component 51 is connected to the ball valve 52.

[0028] Hydraulic oil serves as the power transmission medium, thereby ensuring the interoperability between the pistons.

[0029] Understandably, the hot water in the outlet water system of the thermal power unit flows to the inlet pipe 2 and then into the water tank 1 from the other end of the inlet pipe 2. During the hot water flow, the water pressure applies pressure to the first piston 421. The first piston 421 moves along the axial direction of the first hydraulic pipe 42, which drives the force-bearing piston 412 to move along the axial direction of the sealing pipe 411. The change in air pressure in the air layer between the force-bearing piston 412 and the floating piston 413 causes the floating piston 413 to move along the axial direction of the sealing pipe 411, which in turn causes the second piston 431 to move along the axial direction of the second hydraulic pipe 43. The second piston 431 drives the transmission component 51 to move, thereby realizing the rotation of the ball valve 52 and adjusting the hot water flow rate in the outlet pipe 3. The adjustment process is relatively simple and reliable.

[0030] For example, the transmission component 51 can be specially matched so that the opening degree of the ball valve 52 corresponds to the water pressure change, which can compensate for the typical nonlinear pulsation characteristics of the water pressure output of the thermal power unit, thereby achieving an approximately linear flow output and thus realizing the conversion of water pressure signal into mechanical displacement signal.

[0031] According to the embodiment of the present invention, the water pressure regulating device 10, by setting up a hydraulic component 4 and an regulating component 5, allows the hydraulic component 4 to adjust the flow rate in the outlet pipe 3 according to the change in water pressure. The change in the opening degree of the ball valve 52 corresponds to the change in water pressure, which can compensate for the typical nonlinear pulsation characteristics of the outlet water pressure of the thermal power unit, thereby achieving an approximately linear flow output. This realizes the conversion of water pressure signal into mechanical displacement signal, and the regulation process is relatively simple and reliable.

[0032] In some embodiments, the water inlet pipe 2 passes through the water tank 1 and is welded to it. The water inlet pipe 2 is U-shaped, and the end of the water inlet pipe 2 is fixedly connected to the water delivery pipe 21 and the first hydraulic cylinder. The water delivery pipe 21 is perpendicular to the water inlet pipe 2. At this time, the water entering through the water inlet pipe 2 can flow into the water tank 1 through the water delivery pipe 21.

[0033] In some embodiments of the present invention, such as Figure 2 , Figure 3 and Figure 5 As shown, the transmission component 51 includes a rack 511 and a gear 512. The rack 511 is connected to the second piston 431 and moves synchronously. The gear 512 meshes with the rack 511. The ball valve 52 includes a valve body 521 and a valve core 522. The valve body 521 is located inside the water outlet pipe 3. The valve core 522 is a V-shaped port ball core. The valve core 522 is rotatably located inside the valve body 521 and connected to the gear 512.

[0034] Understandably, hot water in the thermal power unit's outlet water system flows to the inlet pipe 2 and then into the water tank 1 from the other end of the inlet pipe 2. During the hot water flow, the water pressure applies pressure to the first piston 421, causing the first piston 421 to move away from the inlet pipe 2. This causes the force-bearing piston 412 to move along the axial direction of the sealing pipe 411 away from the first piston 421. The change in air pressure within the air layer between the force-bearing piston 412 and the floating piston 413 causes the floating piston 413 to move along the axial direction of the sealing pipe 411 away from the force-bearing piston 412, thereby causing the second piston 412 to move away from the force-bearing piston 412. The piston 431 moves away from the floating piston 413 along the axial direction of the second hydraulic pipe 43. The second piston 431 drives the rack 511 to move away from the second piston 431. The rack 511 drives the gear 512 to rotate, thereby realizing the rotation of the valve core 522. The shape of the V-shaped valve core 522 makes the valve opening and flow rate approximately equal percentage. The flow gain is small at a small opening and large at a large opening, realizing automatic adaptation of flow rate with water pressure changes. It is suitable for process control with high adjustment accuracy and can compensate for nonlinear water pressure changes in the system, maintaining the stability inside the water tank 1.

[0035] In some embodiments, gear 512 and valve core 522 are connected by valve stem 523. Gear 512 and rack 511 are engaged with zero clearance. The linear movement of rack 511 can be converted into the rotational movement of valve stem 523 through gear 512, thereby driving valve core 522 to rotate around the inner cavity of valve body 521. This changes the communication area between the V-shaped port of valve core 522 and water outlet pipe 3, realizing automatic adjustment of flow rate in water outlet pipe 3, while adapting to water pressure changes in water inlet pipe 2, ensuring the stability of water pressure and flow rate.

[0036] The transmission ratio of gear 512 and rack 511 can be specially matched so that the opening degree of ball valve 52 corresponds to the water pressure change, which can compensate for the typical nonlinear pulsation characteristics of the water pressure output of thermal power unit, thereby achieving an approximately linear flow output, and thus realizing the conversion of water pressure signal into mechanical displacement signal.

[0037] In some embodiments of the present invention, such as Figure 1 and Figure 4 As shown, the hydraulic assembly 4 also includes a top box 44, and a transmission component 51 is disposed inside the top box 44 and movably connected to the top box 44. A rack 511 is located inside the top box 44, and a wear-resistant elastic pad is provided on the back of the rack 511 and it is slidably connected to the top box 44. The top box 44 can provide a certain guide for the rack 511. The valve stem 523 passes through the ball valve 52 and the top box 44 in sequence and is fixedly connected to the gear 512 inside the top box 44. The valve stem 523 is sealed and rotatedly connected to the ball valve 52 and the top box 44 through sealing packing, etc., which can effectively prevent water leakage from the pipeline and the entry of external impurities.

[0038] In some embodiments of the present invention, such as Figure 2 As shown, a nitrogen layer 414 is filled between the floating piston 413 and the force-bearing piston 412. It can be understood that, initially, both the force-bearing piston 412 and the floating piston 413 are located in the middle of the sealing tube 411. The nitrogen layer 414 has good elastic energy storage and buffering effects, effectively offsetting instantaneous fluctuations in water pressure and stably transmitting hydraulic power, thereby avoiding the influence of water hammer and other phenomena on pressure transmission and regulation. If water hammer occurs, the water pressure will increase instantaneously. At this time, the nitrogen layer 414 will be rapidly compressed, thus storing energy through the nitrogen layer 414 to effectively offset the pressure, avoiding excessive instantaneous driving force on the regulating component 5, avoiding excessive opening deviation of the ball valve 52, and effectively buffering instantaneous fluctuations in water pressure.

[0039] In some embodiments of the present invention, such as Figure 1 , Figure 6 and Figure 7 As shown, the water pressure regulating device 10 also includes an exhaust assembly 6, which is located at the top of the water tank 1. The exhaust assembly 6 has a connecting hole 12, which connects the accommodating space 11 and the exhaust assembly 6. It is understood that when gas is generated in the water tank 1, the gas will rise to the exhaust assembly 6, and the connecting hole 12 can discharge the gas outwards, ensuring the water level in the water tank 1 and preventing gas from entering the pipeline and affecting the stability of the flow regulation.

[0040] In some embodiments of the present invention, such as Figure 1 , Figure 6 and Figure 7 As shown, the exhaust assembly 6 includes an exhaust pipe 61, an inner cylinder 62, and a sealing plug 63. The exhaust pipe 61 is located on the top side of the water tank 1 and communicates with the connecting hole 12. The top of the exhaust pipe 61 has an exhaust hole 611. The inner cylinder 62 is located inside the exhaust pipe 61 and is coaxially arranged with the exhaust pipe 61. The inner cylinder 62 is connected to the inner top wall of the exhaust pipe 61. The exhaust hole 611 communicates with the inner cylinder 62. The lower end of the inner cylinder 62 is open. The sealing plug 63 is located on the lower side of the inner cylinder 62. The sealing plug 63 is slidably connected to the inner wall of the exhaust pipe 61 in the vertical direction, used to seal or open the opening at the lower end of the inner cylinder 62. An exhaust groove 612 is provided at the lower end of the inner wall of the exhaust pipe 61. In the vertical direction, the upper end of the exhaust groove 612 is spaced apart from the lower end of the inner cylinder 62. An air guide groove 631 is provided on the outer peripheral wall of the sealing plug 63. When the sealing plug 63 seals the inner cylinder 62, the air guide groove 631 communicates with both the exhaust groove 612 and the inner cylinder 62. It is understandable that... When gas is generated in water tank 1, the gas will gather upward to the exhaust pipe 61, and at the same time push the sealing plug 63 to move upward along the inner wall of the exhaust pipe 61 until the sealing plug 63 blocks the inner cylinder 62. The air guide groove 631 is aligned and connected with the exhaust groove 612. The gas enters the inner cylinder 62 through the exhaust groove 612 and the air guide groove 631 in sequence, and then exits from the exhaust hole 611, thereby realizing automatic exhaust, ensuring the water content in water tank 1, and preventing gas from entering the pipeline and affecting the stability of flow regulation.

[0041] The exhaust groove 612 has a U-shaped cross-section to increase the exhaust channel area and improve exhaust efficiency. The air guide groove 631 has an L-shaped cross-section to allow the air guide groove 631 and the exhaust groove 612 to quickly achieve air passage connection.

[0042] In addition, the sealing plug 63 is sealed to the inner wall of the exhaust pipe 61 to prevent air from flowing into the water tank 1 from the edge of the sealing plug 63.

[0043] In some embodiments, the lower end of the exhaust pipe 61 is provided with two spaced-apart limiting rings 613, and the sealing plug 63 is located between the two limiting rings 613. The limiting rings 613 can precisely limit the sliding stroke of the sealing plug 63, thereby reliably controlling the opening and closing of the exhaust groove 612.

[0044] In some embodiments of the present invention, such as Figure 1 , Figure 6 and Figure 7 As shown, the exhaust assembly 6 also includes a sealing disc 64, a first one-way valve 65, a second one-way valve 66, a first elastic element 681, and a limiting element 67. The sealing disc 64 is slidably disposed in the inner cylinder 62 in the vertical direction. The sealing disc 64 has a first limit position and a second limit position. The first one-way valve 65 is disposed below the first limit position and the second limit position. The first one-way valve 65 only allows airflow to flow from the inside of the inner cylinder 62 to the exhaust area between the inner cylinder 62 and the exhaust pipe 61. The second one-way valve 66 is disposed above the first limit position and the second limit position. The second one-way valve 66 only allows airflow to flow from the exhaust area between the inner cylinder 62 and the exhaust pipe 61 to the inside of the inner cylinder 62. When gas is generated in water tank 1, it rises to the exhaust pipe 61, simultaneously pushing the sealing plug 63 upwards along the inner wall of the exhaust pipe 61 until the sealing plug 63 seals the inner cylinder 62. The air guide groove 631 aligns and connects with the exhaust groove 612. The gas is then discharged sequentially through the exhaust groove 612, the air guide groove 631, the first one-way valve 65, the second one-way valve 66, and the exhaust port 611, thus achieving automatic venting, ensuring the water level in water tank 1, and preventing gas from entering the pipeline and affecting the stability of flow regulation. The first one-way valve 65 and the second one-way valve 66 enable one-way gas guidance, preventing gas from flowing into the containing space 11.

[0045] The limiting member 67 is located on the upper side of the sealing disc 64 and is adapted to abut against the sealing disc 64 to limit the sealing disc 64 and prevent it from moving to the upper side of the second one-way valve 66, thus avoiding affecting the gas exhaust process. The first elastic member 681 is connected to the sealing disc 64 and the sealing plug 63 and is used to drive the sealing plug 63 to move downward. The first elastic member 681 provides a stable elastic restoring force for the sealing plug 63.

[0046] In some embodiments of the present invention, such as Figure 1 , Figure 6 and Figure 7 As shown, the exhaust assembly 6 also includes a guide post 68. The guide post 68 is non-cylindrical and extends vertically. The top end of the guide post 68 is connected to the top wall of the inner cylinder 62. The guide post 68 is slidably connected to both the sealing plug 63 and the sealing disc 64. A first elastic member 681 is sleeved on the outside of the guide post 68. The guide post 68 provides guidance for the movement of the sealing plug 63, the sealing disc 64, and the first elastic member 681, making their movement more reliable. Since the guide post 68 is non-cylindrical, corresponding non-circular holes can be provided on the sealing plug 63 and the sealing disc 64 to prevent them from rotating during movement. In this embodiment, T-shaped holes can be provided on the sealing plug 63 and the sealing disc 64.

[0047] In some embodiments, such as Figure 1 , Figure 6 and Figure 7 As shown, a limiting plate 683 is fixedly connected to the surface of the guide post 68. The limiting plate 683 is located on the lower side of the sealing disc 64. The guide post 68 and the sealing disc 64 are slidably connected. The limiting plate 683 can limit the downward movement distance of the sealing disc 64 and prevent excessive displacement.

[0048] In some embodiments of the present invention, such as Figure 1 , Figure 6 and Figure 7 As shown, the exhaust assembly 6 also includes a second elastic member 682, and the limiting member 67 includes a limiting cylinder 671 and a limiting disc 672. The upper end of the limiting cylinder 671 is connected to the top wall of the inner cylinder 62, and the limiting disc 672 is connected to the lower end of the limiting cylinder 671 and to the inner peripheral wall of the inner cylinder 62. The limiting disc 672 is adapted to abut against the sealing disc 64. At least a portion of the second elastic member 682 is disposed inside the limiting cylinder 671. The second elastic member 682 is sleeved outside the guide post 68 and is connected to both the top wall of the inner cylinder 62 and the sealing disc 64, for driving the sealing disc 64 to move downward.

[0049] The limiting sleeve 671 isolates and protects the second elastic element 682, preventing it from becoming stuck or failing prematurely due to water impurities and high-temperature gases, thus ensuring long-term stability of its elastic performance. The second elastic element 682 provides elastic support and restoring force for the sealing disc 64.

[0050] The exhaust assembly 6 can automatically collect and discharge the gas in the water tank 1, while preventing external air backflow and ensuring the water content in the water tank 1 and pipeline, thus achieving coordinated operation of pressure regulation and gas discharge.

[0051] The heating capacity detection device 100 according to an embodiment of the present invention, such as Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the device includes a water pressure regulating device 10 and a detection component 20. The detection component 20 includes a pressure sensor 201 and a constant pressure water valve 202. The constant pressure water valve 202 is fixedly connected to the inlet pipe 2. There are two pressure sensors 201, located at opposite ends of the ball valve 52. The pressure sensors 201 are located at the input and output ends of the ball valve 52, respectively, allowing the measurement of pressure values ​​P1 and P2. The constant pressure water valve 202 provides a stable inlet pressure to the inlet pipe 2, providing basic data support for the detection of the heating capacity of the thermal power unit. Both the constant pressure water valve 202 and the ball valve 52 are equipped with temperature sensors, which can collect water temperatures T1 and T2 respectively. During the detection process, the heating calculation formula is used.

[0052] The actual heating capacity of the thermal power unit can be obtained. The water pressure regulating device 10 can ensure the stability of water pressure and flow during the test, avoid water pressure fluctuations that cause deviation in test data, and effectively improve the accuracy and reliability of the thermal power unit heating capacity test. During the test and regulation process, the hydraulic component 4 not only converts the inlet water pressure into the regulating action of the valve core 522 in real time, but its core accumulator 41 also acts as a mechanical low-pass filter to filter out high-frequency water hammer impact and only transmit effective pressure trend signals, thereby achieving smooth regulation.

[0053] The pressure sensor 201 collects water pressure data at both ends of the ball valve 52 in real time. Combined with the flow and pressure stabilization function of the regulating component 5, it reduces the deviation of detection data caused by fluctuations in water pressure and flow, and improves the accuracy and reliability of the detection results of the heating capacity of the thermal power unit.

[0054] According to the embodiment of the present invention, the heating capacity detection device 100, by setting up a hydraulic component 4 and an adjustment component 5, can adjust the flow rate in the outlet pipe 3 according to the change of water pressure. The opening degree of the ball valve 52 corresponds to the change of water pressure, which can compensate for the typical nonlinear pulsation characteristics of the outlet water pressure of the thermal power unit, thereby achieving an approximately linear flow output. This realizes the conversion of water pressure signal into mechanical displacement signal, and the adjustment process is relatively simple and reliable.

[0055] In actual use, the inlet pipe 2 is first connected to the water outlet system of the thermal power unit. At this time, hot water enters the water tank 1 through the inlet pipe 2. The inlet pressure can be electronically adjusted by the constant pressure water valve 202. The water pressure in the inlet pipe 2 pushes the first piston 421 to slide along the seal of the first hydraulic cylinder. The nitrogen layer 414 is compressed by the force-bearing piston 412, which in turn drives the floating piston 413, the second piston 431 and the rack 511 to move linearly along the top box 44. The rack 511 moves linearly along the top box 44 through the meshing gear 512. The valve stem 523 and valve core 522 rotate synchronously, thereby adjusting the connection area between the V-shaped port of valve core 522 and the outlet pipe 3, achieving automatic adaptation of the flow rate of the outlet pipe 3. When the water pressure in the inlet pipe 2 increases, the rack 511 moves away from the second piston 431, and the gear 512 drives the valve core 522 to rotate, increasing the connection area and increasing the water output. When the water pressure decreases, the elastic restoring force of the nitrogen layer 414 drives the rack 511 to move in the opposite direction, and the valve core 522 rotates to reduce the connection area. During the process of reducing water output, gas is generated in the water tank 1 due to water flow and gathers upward to the exhaust pipe 61. At this time, the air pressure pushes the sealing plug 63 to move upward along the inner wall of the exhaust pipe 61, so that the air guide groove 631 and the exhaust groove 612 are connected. The gas passes through the air guide groove 631, the first one-way valve 65, and the second one-way valve 66 and is discharged through the exhaust hole 611. After the exhaust is completed, the elastic restoring force of the first elastic element 681 and the second elastic element 682 drives the sealing plug 63 and the sealing plate 64 to move downward and reset, closing the exhaust channel and preventing external air from flowing back in. Since the second elastic element 682 will be in continuous contact with high temperature gas during long-term use, it may fail. When the second elastic element 682 fails, the first elastic element 681 pushes the sealing plate 64 downward to cover the first one-way valve 65. At this time, the gas needs to push the sealing plate 64 upward to slide away from the first one-way valve 65 in order to exhaust. In this way, the sealing plate 64 can continue to maintain the stability of the internal pressure of the water tank 1.

[0056] During the testing process, two pressure sensors 201 collect water pressure data at both ends of the ball valve 52 in real time and transmit it to an external testing terminal. At the same time, the terminal analyzes and calculates the data by combining the water temperature difference and the flow rate data of the outlet pipe 3, thereby determining the heating capacity of the thermal power unit. If the heating capacity is too low, the pressure setting value of the constant pressure water valve 202 is increased, thereby increasing the water flow rate. At this time, the valve core 522 rotates to increase the flow area of ​​the ball valve 52, and vice versa, thus forming an integrated adaptive suppression system for pulsating pressure and mixed gas coupling interference.

[0057] Other configurations and operations of the water pressure regulating device 10 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0059] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A water pressure regulating device, characterized in that, For use in thermal power units and including: Water tank, which defines a containment space; A water inlet pipe, one end of which is located within the accommodating space, and the other end extends out of the accommodating space and is connected to the water outlet system of the thermal power unit; A water outlet pipe, one end of which is located within the receiving space, and the other end of which extends out of the receiving space; A hydraulic assembly is disposed within the accommodating space and between the inlet pipe and the outlet pipe. The hydraulic assembly includes an accumulator, which includes a sealed tube. A force-bearing piston and a floating piston are slidably connected within the sealed tube. The accumulator is connected to a first hydraulic pipe and a second hydraulic pipe. The first hydraulic pipe communicates with the inlet pipe and is spaced apart from both ends of the inlet pipe. A first piston is disposed within the first hydraulic pipe and is slidably connected to the first hydraulic pipe. A first chamber between the first piston and the force-bearing piston is filled with hydraulic oil. A second piston is disposed within the second hydraulic pipe and is slidably connected to the second hydraulic pipe. A second chamber between the second piston and the floating piston is filled with hydraulic oil. The floating piston is configured such that when the first piston moves in a direction away from the inlet pipe, the force-bearing piston drives the floating piston to move in a direction away from the inlet pipe. The regulating component includes a transmission component and a ball valve. The ball valve is located inside the outlet pipe and is used to regulate the flow rate of the outlet pipe. The input end of the transmission component is connected to the second piston, and the output end of the transmission component is connected to the ball valve.

2. The water pressure regulating device according to claim 1, characterized in that, The transmission component includes: A rack, which is connected to and moves synchronously with the second piston; The gear meshes with the rack. The ball valve includes a valve body and a valve core. The valve body is located inside the water outlet pipe. The valve core is a V-shaped port ball core. The valve core is rotatably located inside the valve body and connected to the gear.

3. The water pressure regulating device according to claim 1, characterized in that, A nitrogen layer is filled between the floating piston and the force-bearing piston.

4. The water pressure regulating device according to claim 1, characterized in that, The hydraulic assembly also includes: The top box, wherein the transmission component is disposed inside the top box and is movably connected to the top box.

5. The water pressure regulating device according to claim 1, characterized in that, Also includes: An exhaust assembly is provided at the top of the water tank, and the exhaust assembly has a connecting hole for connecting the receiving space and the exhaust assembly.

6. The water pressure regulating device according to claim 5, characterized in that, The exhaust assembly includes: An exhaust pipe is provided on the top side of the water tank and communicates with the connecting hole, and an exhaust hole is provided at the top of the exhaust pipe; An inner cylinder is disposed inside the exhaust pipe and coaxially arranged with the exhaust pipe. The inner cylinder is connected to the inner top wall of the exhaust pipe, and the exhaust hole communicates with the inner cylinder. A sealing plug is provided at the lower end of the inner cylinder, which is open. The sealing plug is located on the lower side of the inner cylinder and is slidably connected to the inner wall of the exhaust pipe in the vertical direction. It is used to block or open the opening at the lower end of the inner cylinder. An exhaust groove is provided at the lower end of the inner wall of the exhaust pipe. In the vertical direction, the upper end of the exhaust groove is spaced apart from the lower end of the inner cylinder. An air guide groove is provided on the outer peripheral wall of the sealing plug. When the sealing plug blocks the inner cylinder, the air guide groove is connected to both the exhaust groove and the inner cylinder.

7. The water pressure regulating device according to claim 6, characterized in that, The exhaust assembly also includes: A sealing disc is slidably disposed in the inner cylinder along the vertical direction, and the sealing disc has a first limit position and a second limit position. A first one-way valve is located below the first and second extreme positions. The first one-way valve only allows airflow to flow from the inside of the inner cylinder to the exhaust area between the inner cylinder and the exhaust pipe. The second one-way valve is located above the first limit position and the second limit position. The second one-way valve only allows airflow to flow from the exhaust area between the inner cylinder and the exhaust pipe to the inner side of the inner cylinder. A first elastic element is connected to the sealing disc and the sealing plug, and is used to drive the sealing plug to move downward; A limiting member is provided on the upper side of the sealing disc and is adapted to abut against the sealing disc.

8. The water pressure regulating device according to claim 7, characterized in that, The exhaust assembly also includes: The guide post is non-cylindrical and extends in the vertical direction. The top end of the guide post is connected to the top wall of the inner cylinder. The guide post is slidably connected to the sealing plug and the sealing disc. The first elastic element is sleeved on the outside of the guide post.

9. The water pressure regulating device according to claim 8, characterized in that, The exhaust assembly also includes: The second elastic element, the limiting element includes a limiting cylinder and a limiting disc, the upper end of the limiting cylinder is connected to the top wall of the inner cylinder, the limiting disc is connected to the lower end of the limiting cylinder and to the inner peripheral wall of the inner cylinder, the limiting disc is adapted to abut against the sealing disc, at least a portion of the second elastic element is disposed inside the limiting cylinder, the second elastic element is sleeved outside the guide post and is connected to both the top wall of the inner cylinder and the sealing disc, for driving the sealing disc to move downward.

10. A heating capacity detection device, characterized in that, include: The water pressure regulating device according to any one of claims 1-9; The detection component includes a pressure sensor and a constant pressure water valve. The constant pressure water valve is fixedly connected to the water inlet pipe. There are two pressure sensors, which are located at both ends of the ball valve.

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