Residual pressure recoverer for heat supply system

Abstract

The utility model relates to the field of excess pressure recoverers, in particular to an excess pressure recoverer for a heat supply system, and solves the technical problems that fluid pressure energy loss exists in a high-low area water supply recovery system of a building, and the heat supply and refrigeration operation cost of a high area is high. According to the technical scheme, the excess pressure recoverer for the heat supply system comprises a water feeding pump head, a water returning pump head, a coupler, an end disc, a rotary disc, a pump shaft, an impeller and a clamping and fixing assembly. The two pump heads are combined with the coupling and the pump shaft to be oppositely connected to form the residual pressure recoverer, the overhigh water return pressure in a high area can be converted into mechanical energy through the rotating impeller in a water supply and water return system, the pump heads of the water pump installed on a water supply pipeline are driven to do work, the electric energy consumption of an original water supply pressure pump is reduced, and the cost is reduced. And the problems of fluid pressure energy loss and high heat supply and refrigeration operation cost of a high area in a high-low area water supply recovery system of a building are solved.

Description

Technical Field

[0001] The utility model relates to the field of residual pressure recovery devices, in particular to a residual pressure recovery device for a heating system. Background Art

[0002] In the centralized heating system, there are more and more high-rise buildings. Since the circulating water pressure used for heating and cooling in high-rise buildings is relatively high, which exceeds the pressure-bearing capacity of the heating and cooling system of low-rise buildings, it is necessary to divide the high-rise buildings into two systems, the low zone and the high zone, for heating and cooling respectively. The high zone and the low zone use different heat exchangers for heating and operate with different pressure parameters. For places without high-temperature water heat sources, high and low zone direct-connected heating equipment is used to directly supply low-temperature water from low-rise buildings, which is pressurized to heat the high zone and then depressurized. The high zone return water after depressurization is merged into the low zone return water system.

[0003] Since the direct-connected heating equipment in the high and low zones uses a water pump to increase the pressure of the low zone water supply to meet the heating and cooling needs of the high zone, and then uses a pressure reducing valve to reduce the pressure on the high zone return water, which is then merged into the low zone return water, this process involves a large amount of fluid pressure energy loss, causing the operating costs of the high zone heating and cooling to remain high.

[0004] Therefore, in order to address the above-mentioned problems of fluid pressure energy loss in the water supply recovery system of the high and low areas of the building and the high operating cost of heating and cooling in the high area, a residual pressure recovery device can be designed. On the premise of meeting the normal heating and cooling requirements of the high area, the excess return water pressure of the heating and cooling return water in the high area can be recovered and converted into mechanical energy for utilization, thereby achieving the purpose of energy saving. Utility Model Content

[0005] In order to overcome the problem of fluid pressure energy loss in the water supply recovery system of high and low areas of a building, and high operating costs of heating and cooling in high areas.

[0006] The technical solution of the utility model is: a residual pressure recovery device for a heating system, comprising a water supply pump head, a return water pump head, a coupling, an end plate, a turntable, a pump shaft, an impeller, and a clamping assembly; the water supply pump head is connected to the water supply pipeline of the building, and the return water pump head is connected to the return water pipeline of the building, a coupling is arranged between the water supply pump head and the return water pump head, and end plates are arranged on both sides of the coupling facing the water supply pump head and the return water pump head, a turntable is rotatably connected to the inner side of the coupling, and pump shafts extending into the water supply pump head and the return water pump head are fixedly connected on both sides of the turntable, and an impeller is fixedly installed at one end of the pump shaft facing away, and the coupling is fixedly installed to the water supply pipeline and the return pipeline through a clamping assembly.

[0007] Preferably, after the high-level water flows back into the return pump head through the return pipe, the water flow impacts the impeller therein, causing the impeller to rotate, and the pump shaft and another impeller in the water supply pump head rotate synchronously, doing work for the water pumped upward in the water supply pump head, reducing the power consumption of the original water supply booster pump.

[0008] Preferably, the fixing assembly includes a connecting sleeve, a connecting rod, and a clamp; the connecting sleeve is a hollow rod and is symmetrically arranged in two groups. Connecting rods are plugged into and installed at both ends of the connecting sleeve. The ends of the connecting rods are fixedly connected to clamps. The clamps are sleeved on adjacent water supply pipes and return pipes and locked by tightening bolts. The connecting rod slides axially in the connecting sleeve, so that the clamps are sleeved on the corresponding water supply pipes and return pipes. After tightening the bolts on the clamps, the clamps are fixed to the pipes to keep the coupling stable in the horizontal direction.

[0009] Preferably, the clamping assembly also includes a spring; a baffle is arranged in the middle of the inner side of the connecting sleeve, and a spring is installed between the baffle and the adjacent connecting rod. According to the different positions of the water supply pipe and the return pipe relative to the water supply pump head and the return pump head, the connecting rod can be adjusted by the expansion and contraction of the spring to ensure full connection between the clamp and the pipe.

[0010] Preferably, threaded holes are provided at both ends of the coupling, and a screw head is fixedly connected to the outer wall of the connecting sleeve. The screw head is threadedly connected in an adjacent threaded hole. The connecting sleeve is fixed by the threaded connection between the screw head and the threaded hole. It can be easily removed from the coupling when not in use, and is flexible and convenient to use.

[0011] Preferably, a longitudinally penetrating pin hole is provided at the upper end of the coupling, and twelve adjustment holes are provided around the turntable. Locking pins matching the adjustment holes are inserted into the pin holes. After the locking pins are inserted into the pin holes and the corresponding adjustment holes, the coupling and the turntable are locked to prevent the turntable from rotating relative to the coupling.

[0012] Preferably, one side of the end plate is fixedly connected to a table plate above the pin hole, a cylinder is installed on the upper end of the table plate, and a locking pin is fixedly connected to the lower end of the piston rod of the cylinder. The locking pin is driven by the cylinder to extend and retract in and out of the pin hole. In actual applications, it can also be used by manual locking.

[0013] Preferably, the two impellers are respectively located in the feed water pump head and the return water pump head and are respectively facing the return water port of the return water pump head and the water outlet of the feed water pump head. The impeller in the return water pump head rotates due to the recovery pressure, driving the other impeller in the feed water pump head to rotate, thereby doing work on the water in the feed water pump head.

[0014] Beneficial effects of the utility model:

[0015] 1. The residual pressure recovery device is made of two pump heads combined with couplings and pump shafts connected in opposite directions. In the water supply and return water system, the excessive return water pressure in the high area can be converted into mechanical energy through the rotating impeller, driving the pump head installed in the water supply pipeline to work, reducing the power consumption of the original water supply booster pump and achieving the purpose of saving electricity;

[0016] 2. Use the connection between the clamping assembly and the water supply and return pipes to further fix the coupling to ensure that the coupling remains stable when the pump shaft rotates;

[0017] 3. The coupling and the turntable can be locked by the locking pin, and the relative rotation of the coupling and the pump shaft can be easily stopped when the residual pressure recovery is not needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 What is shown is a first three-dimensional structural schematic diagram of a residual pressure recovery device for a heating system of the utility model;

[0019] Figure 2 The diagram shows the internal three-dimensional structure of the residual pressure recovery device for the heating system of the utility model;

[0020] Figure 3 The present invention shows a schematic diagram of the three-dimensional structure of the coupling and the pump shaft of the residual pressure recovery device for the heating system of the present invention;

[0021] Figure 4 The diagram shows the internal three-dimensional structure of the coupling of the residual pressure recovery device for the heating system of the utility model;

[0022] Figure 5 The three-dimensional structure diagram of the coupling and the clamping assembly of the residual pressure recovery device for the heating system of the utility model is shown;

[0023] Figure 6 Shown is a three-dimensional structural schematic diagram of the residual pressure recovery device fixing assembly for a heating system of the utility model.

[0024] Explanation of the accompanying reference numerals: 1. water supply pump head; 2. return water pump head; 3. coupling; 4. end plate; 5. turntable; 6. pump shaft; 7. impeller; 9. screw mouth; 10. screw head; 11. pin hole; 12. adjustment hole; 13. locking pin; 14. table; 15. cylinder; 801. connecting sleeve; 802. connecting rod; 803. spring; 804. clamp. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0026] See also Figure 1-3The utility model provides an embodiment: a residual pressure recovery device for a heating system, comprising a water supply pump head 1, a return water pump head 2, a coupling 3, an end plate 4, a turntable 5, a pump shaft 6, an impeller 7, and a clamping assembly; the water supply pump head 1 is connected to the water supply pipeline of the building, the return water pump head 2 is connected to the return water pipeline of the building, a coupling 3 is arranged between the water supply pump head 1 and the return water pump head 2, the coupling 3 is provided with end plates 4 on both sides of the water supply pump head 1 and the return water pump head 2, the inner side of the coupling 3 is rotatably connected with a turntable 5, and the turntable 5 is arranged on the inner side of the coupling 3. Both sides of the disk 5 are fixedly connected with pump shafts 6 which extend into the water supply pump head 1 and the return water pump head 2 respectively. An impeller 7 is fixedly installed on the back end of the pump shaft 6. The coupling 3 is fixedly installed with the water supply pipeline and the return water pipeline through a clamping assembly. After the high-level water flows back into the return water pump head 2 through the return water pipeline, the water flow impacts the impeller 7 therein, causing the impeller 7 to rotate, and the pump shaft 6 and the other impeller 7 in the water supply pump head 1 rotate synchronously, doing work for the water pumped upward in the water supply pump head 1, reducing the power consumption of the original water supply booster pump.

[0027] See also Figure 5-6 In this embodiment, the clamping assembly includes a connecting sleeve 801, a connecting rod 802, and a clamp 804; the connecting sleeve 801 is a hollow rod and is symmetrically arranged in two groups. The upper and lower ends of the connecting sleeve 801 are plugged and installed with connecting rods 802, and the ends of the connecting rod 802 are fixedly connected with clamps 804. The clamps 804 are sleeved on the adjacent water supply pipes and return pipes and locked by tightening bolts. The connecting rod 802 slides axially in the connecting sleeve 801, so that the clamps 804 are sleeved on the corresponding water supply pipes and return pipes. After tightening the bolts on the clamps 804, the clamps 804 are fixed to the pipes to keep the coupling 3 stable in the horizontal direction. The clamping assembly It also includes a spring 803; a baffle is arranged in the middle of the inner side of the connecting sleeve 801, and a spring 803 is installed between the baffle and the adjacent connecting rod 802. According to the different positions of the water supply pipe and the return pipe relative to the water supply pump head 1 and the return pump head 2, the connecting rod 802 can be adjusted by the expansion and contraction of the spring 803 to ensure that the clamp 804 is fully connected to the pipe. Threaded holes 9 are arranged on both ends of the coupling 3. A screw head 10 is fixedly connected to the outer wall of the connecting sleeve 801. The screw head 10 is threadedly connected in the adjacent screw hole 9. The connecting sleeve 801 is fixed by the threaded connection between the screw head 10 and the screw hole 9, and can be easily removed from the coupling 3 when not in use, which is flexible and convenient to use.

[0028] See also Figure 2-4In this embodiment, a longitudinally penetrating pin hole 11 is provided at the upper end of the coupling 3, and twelve adjustment holes 12 are provided around the turntable 5. A locking pin 13 adapted to the adjustment hole 12 is inserted into the pin hole 11. After the locking pin 13 is inserted into the pin hole 11 and the corresponding adjustment hole 12, the coupling 3 and the turntable 5 are locked to prevent the turntable 5 from rotating relative to the coupling 3. A table 14 located above the pin hole 11 is fixedly connected to one side of the end plate 4, and a cylinder 15 is installed on the upper end of the table 14 to lock the The pin 13 is fixedly connected to the lower end of the piston rod of the cylinder 15, and the locking pin 13 is driven by the cylinder 15 to extend and retract in the pin hole 11. In practical applications, it can also be used in a manual locking manner. The two impellers 7 are respectively located in the water supply pump head 1 and the return water pump head 2 and are respectively facing the return water port of the return water pump head 2 and the water outlet of the water supply pump head 1. The impeller 7 in the return water pump head 2 rotates under the recovery pressure, driving the other impeller 7 in the water supply pump head 1 to rotate, thereby doing work on the water in the water supply pump head 1.

[0029] When working, connect the water inlet and outlet of the water supply pump head 1 to the water supply pipe, connect the water inlet and outlet of the return pump head 2 to the return pipe, and then install the connecting sleeve 801 on the coupling 3 through the threaded connection of the screw head 10 and the screw mouth 9;

[0030] Stretch the connecting rod 802, put the clamp 804 on the corresponding water supply pipe and return pipe, tighten the bolts on the clamp 804, and fix the clamp 804 to the pipe;

[0031] The water flow in the return water pipeline impacts the impeller 7 in the return water pump head 2, causing the impeller 7 to rotate, and the pump shaft 6 and the other impeller 7 in the feed water pump head 1 rotate synchronously, doing work for the water pumped upward in the feed water pump head 1, reducing the power consumption of the original water supply booster pump.

[0032] Through the above steps, two pump heads are combined with a coupling 3 and a pump shaft 6 to be connected in opposite directions to form a residual pressure recovery device. In the water supply and return water system, the excessive return water pressure in the high area can be converted into mechanical energy through the rotating impeller 7, driving the pump head installed in the water supply pipe to work, reducing the power consumption of the original water supply booster pump, achieving the purpose of saving electricity, and solving the problems of fluid pressure energy loss in the water supply recovery system of the high and low areas of the building and high heating and cooling operation costs in the high area.

[0033] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A residual pressure recovery device for a heating system, comprising a water supply pump head (1) and a water return pump head (2); characterized in that: It also includes a coupling (3), an end plate (4), a rotating disk (5), a pump shaft (6), an impeller (7), and a clamping assembly; the water supply pump head (1) is connected to the water supply pipeline of the building, the return water pump head (2) is connected to the return water pipeline of the building, a coupling (3) is arranged between the water supply pump head (1) and the return water pump head (2), end plates (4) are arranged on both sides of the coupling (3) facing the water supply pump head (1) and the return water pump head (2), a rotating disk (5) is rotatably connected inside the coupling (3), both sides of the rotating disk (5) are fixedly connected with pump shafts (6) extending into the water supply pump head (1) and the return water pump head (2), respectively, an impeller (7) is fixedly installed on one end of the pump shaft (6) facing away from the water supply pump head (1), and the coupling (3) is fixedly installed with the water supply pipeline and the return water pipeline via a clamping assembly.

2. The residual pressure recovery device for a heating system according to claim 1, characterized in that: The clamping assembly comprises a connecting sleeve (801), a connecting rod (802), and a clamp (804); the connecting sleeve (801) is a hollow rod and is symmetrically arranged in two groups, the upper and lower ends of the connecting sleeve (801) are plugged and installed with connecting rods (802), the ends of the connecting rod (802) are fixedly connected with clamps (804), and the clamps (804) are sleeved on adjacent water supply pipes and return pipes and are locked by tightening bolts.

3. The residual pressure recovery device for a heating system according to claim 2, characterized in that: The fastening assembly also includes a spring (803); a baffle is provided in the middle of the inner side of the connecting sleeve (801), and a spring (803) is installed between the baffle and the adjacent connecting rod (802).

4. The residual pressure recovery device for a heating system according to claim 3, characterized in that: The left and right ends of the coupling (3) are both provided with screw holes (9), the outer wall of the connecting sleeve (801) is fixedly connected with a screw head (10), and the screw head (10) is threadedly connected in the adjacent screw hole (9).

5. The residual pressure recovery device for a heating system according to claim 4, characterized in that: A longitudinally penetrating pin hole (11) is provided at the upper end of the coupling (3), twelve adjusting holes (12) are provided around the rotating disk (5), and locking pins (13) adapted to the adjusting holes (12) are inserted into the pin holes (11).

6. The residual pressure recovery device for a heating system according to claim 5, characterized in that: A platform (14) located above the pin hole (11) is fixedly connected to one side of the end plate (4), a cylinder (15) is installed on the upper end of the platform (14), and a locking pin (13) is fixedly connected to the lower end of the piston rod of the cylinder (15).

7. The residual pressure recovery device for a heating system according to claim 6, characterized in that: The two impellers (7) are respectively located in the water supply pump head (1) and the water return pump head (2) and are respectively facing the return water port of the water return pump head (2) and the water outlet of the water supply pump head (1).

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