Stereoscopic pump set of negative pressure water mixing heat supply secondary network
By designing a three-dimensional pump group for the negative pressure water mixing heating secondary network, the existing secondary circulation water pumps occupy a large area and are not suitable for factory production, and realize small-scale design and efficient heat exchange, reducing costs and improving quality, and it is expected to achieve significant power saving effects in a large number of heat exchange stations.
Patent Information
- Application Number
- CN202421948082.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-08-13
AI Technical Summary
The secondary circulation water pumps in existing secondary heat exchange stations are horizontal water pumps with flat inlet and upper outlet, which covers a large area and is not suitable for factory production, resulting in high cost, low quality and unsightly.
A three-dimensional pump group of negative pressure water mixing heating secondary network is designed, including a chassis platform, bracket, circulation pump and heating pipeline pump. It adopts a three-dimensional design to reduce the footprint, and achieves efficient heat exchange and water supply through the coordination of heating pipeline pump, water mixing pipe and circulation pump.
It has achieved a miniaturized design, reduced the area of the area, is suitable for factory manufacturing, reduced cost, improved product quality, and is expected to achieve more than 30% of the power saving effect among about 120,000 secondary heat exchange stations to be renovated nationwide.
Smart Images
Figure CN222895174U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heating facilities, in particular to a three-dimensional pump group of a negative pressure mixed water heating secondary network. Background Art
[0002] The secondary heat exchange stations used in the central heating system are mostly equipped with heat exchangers and secondary circulation water pumps. In order to meet the requirements of the secondary network water supply temperature, all the water output from the secondary circulation water pump must enter the heat exchanger to exchange heat with the primary heat source water or steam to increase the temperature of the secondary water. However, the secondary circulation water pumps in the existing secondary heat exchange stations are all horizontal water pumps with horizontal inlet and top outlet. They can only be arranged in a plane with valve connection, occupy a large area, and can only be installed on site, which is not suitable for factory-made integrated products. Utility Model Content
[0003] The purpose of the utility model is to provide a three-dimensional pump group for a negative pressure mixed water heating secondary network to solve the problems raised in the above-mentioned background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a three-dimensional pump group for a negative pressure mixed water heating secondary network, comprising a chassis platform and a bracket, the bracket being installed on the top of the chassis platform, a circulating pump being provided on the chassis platform, a heating pipe pump being provided on the top of the bracket, the circulating pump comprising an upper inlet and an upper outlet arranged in a U-shape, a mixing water pipe being vertically connected to the outer end of the upper inlet, a water outlet and a mixing inlet being provided on the side of the mixing water pipe, the mixing inlet being connected to a heat exchanger for receiving heating water output by the heat exchanger, and a valve being provided between the water outlet and the heating pipe pump.
[0005] The following improvements are made in the present application scheme: the circulating pump also includes a pump body and a first motor, and the pump body and the first motor are both fixedly mounted on the top of the chassis platform, and the motor shaft of the first motor extends into the pump body and is connected to the impeller inside the pump body.
[0006] The following improvements are made in the present application scheme: the heating pipe pump includes a second motor, a pump body, a water inlet and an outlet, the water inlet and the outlet are arranged on both sides of the pump body, and the motor shaft of the second motor extends into the pump body and is connected to the impeller inside the pump body.
[0007] The following improvements are made in the present application: the water inlet is connected to an end of the valve away from the water outlet, and the outlet is connected to a heat exchanger for conveying part of the secondary return water into the heat exchanger for heating.
[0008] The following improvement is made in the solution of the present application: the bracket is arranged in an inverted right-angled trapezoidal structure, and the second motor is fixedly installed on the top of the bracket.
[0009] Compared with the prior art, the utility model provides a three-dimensional pump group for a negative pressure mixed water heating secondary network, which has the following beneficial effects:
[0010] The utility model adopts the coordinated arrangement between the heating pipeline pump, the mixing water pipe and the circulation pump. The water inlet of the heating pipeline pump is connected to the water outlet on the upper side of the mixing water pipe at a right angle to absorb water, and is connected to the heat exchanger after pressurization. The heated water coming out of the heat exchanger is returned and connected to the mixing inlet on the lower side of the mixing water pipe. The three-dimensional design is intended to achieve miniaturization and greatly reduce the floor space so as to meet the prerequisite of factory manufacturing, thereby changing the previous status quo of high cost, low quality and unsightly construction of bulk splicing. Moreover, with the batch and mass production of the factory, the cost of the three-dimensional pump group will be further reduced. It will reduce the construction cost and improve the quality, and will also accelerate the realization of the goal of saving at least 30% of electricity in the more than 120,000 secondary heat exchange stations that are waiting to be transformed across the country; when in use, all the secondary return water sent from the upper end of the mixing pipe is first sucked away from the upper water outlet by the heating pipe pump and pressurized and transported to the heat exchanger, and then all of it is sent back from the mixing inlet on the lower side of the mixing pipe after heating. This part of the heated secondary return water is mixed with the unheated secondary return water sucked down from the top to obtain the secondary water supply that meets the heating demand temperature, and then is sucked into the U-shaped circulation pump for pressurization and sent out from the upper outlet. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a front view of the utility model;
[0012] Figure 2 It is a side view of the utility model;
[0013] Figure 3 It is a top view of the utility model.
[0014] In the figure: 1. chassis platform; 2. bracket; 3. circulation pump; 31. upper inlet; 32. upper outlet; 33. pump body 1; 34. first motor; 4. heating pipe pump; 41. second motor; 42. pump body 2; 43. water inlet; 44. output; 5. mixing water pipe; 51. water outlet; 52. mixing inlet; 6. valve. DETAILED DESCRIPTION
[0015] The technical solution in the embodiment of the present invention will be described below in conjunction with the accompanying drawings in the embodiment of the present invention:
[0016] like Figure 1-3 As shown, a three-dimensional pump group of a negative pressure mixed water heating secondary network is mainly composed of a chassis platform 1, a bracket 2, a circulation pump 3 and a heating pipe pump 4. The bracket 2 is fixedly installed on the top of the chassis platform 1, and the bracket 2 is arranged in an inverted right-angle trapezoidal structure;
[0017] The circulation pump 3 includes an upper inlet 31 and an upper outlet 32 arranged in a U shape, a pump body 33 and a first motor 34. The pump body 33 and the first motor 34 are fixedly installed on the top of the chassis platform 1. The motor shaft of the first motor 34 extends into the pump body 33 and is connected to the impeller inside the pump body 33. The outer end of the upper inlet 31 is vertically connected to a mixing water pipe 5, and the side of the mixing water pipe 5 is provided with a water outlet 51 and a mixing inlet 52. The water outlet 51 is located above the mixing inlet 52, and the water outlet 51 and the mixing inlet 52 are vertically arranged in different planes, wherein the mixing inlet 52 is connected to the heat exchanger for receiving the heating water output by the heat exchanger, and a horizontally connected valve 6 is provided between the water outlet 51 and the heating pipe pump 4.
[0018] The heating pipeline pump 4 includes a second motor 41, a second pump body 42, a water inlet 43 and an outlet 44. The water inlet 43 and the outlet 44 are arranged on both sides of the second pump body 42. The motor shaft of the second motor 41 extends into the second pump body 42 and is connected to the impeller inside the second pump body 42. The water inlet 43 is connected to the end of the valve 6 away from the water outlet 51. The outlet 44 is connected to the heat exchanger for conveying part of the secondary return water into the heat exchanger for heating. The second motor 41 is fixedly installed on the top of the bracket 2. The water inlet 43 of the heating pipeline pump 4 is connected at right angles to the water outlet 51 on the upper side of the mixing pipe 5 to absorb water. After pressurization, it is connected to the heat exchanger by the aerial rack pipe. The heated water coming out of the heat exchanger is also returned by the aerial rack pipe to connect to the mixing inlet 52 on the lower side of the mixing pipe 5.
[0019] Working principle: All the secondary return water sent from the upper end of the mixing pipe 5 is first sucked away by the heating pipe pump 4 from the upper water outlet 51 and pressurized to the heat exchanger, and then all of it is sent back from the mixing inlet 52 at the lower side of the mixing pipe 5 after heating. This part of the heated secondary return water is mixed with the unheated secondary return water sucked down from the top to obtain the secondary supply water that meets the heating demand temperature, and then is sucked into the U-shaped circulation pump 3 and pressurized to be sent out from the upper outlet 32.
[0020] The above embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
Claims
1. A three-dimensional pump set for a negative pressure mixed water heating secondary network, characterized in that: The invention comprises a chassis platform (1) and a bracket (2), wherein the bracket (2) is mounted on the top of the chassis platform (1), a circulation pump (3) is arranged on the chassis platform (1), and a heating pipeline pump (4) is arranged on the top of the bracket (2), wherein the circulation pump (3) comprises an upper inlet (31) and an upper outlet (32) arranged in a U shape, wherein the outer end of the upper inlet (31) is vertically connected to a mixing water pipe (5), wherein the side of the mixing water pipe (5) is provided with a water outlet (51) and a mixing inlet (52), wherein the mixing inlet (52) is connected to a heat exchanger for receiving heating water outputted by the heat exchanger, and a valve (6) is arranged between the water outlet (51) and the heating pipeline pump (4).
2. According to claim 1, a three-dimensional pump group for a negative pressure mixed water heating secondary network is characterized in that: The circulation pump (3) further comprises a pump body (33) and a first motor (34), wherein the pump body (33) and the first motor (34) are both fixedly mounted on the top of the chassis platform (1), and the motor shaft of the first motor (34) extends into the pump body (33) and is connected to an impeller inside the pump body (33).
3. The three-dimensional pump set of the negative pressure mixed water heating secondary network according to claim 1 is characterized by: The heating pipe pump (4) comprises a second motor (41), a second pump body (42), a water inlet (43) and an outlet (44), wherein the water inlet (43) and the outlet (44) are arranged on both sides of the second pump body (42), and the motor shaft of the second motor (41) extends into the second pump body (42) and is connected to an impeller inside the second pump body (42).
4. A three-dimensional pump set for a negative pressure mixed water heating secondary network according to claim 3, characterized in that: The water inlet (43) is connected to an end of the valve (6) away from the water outlet (51), and the water outlet (44) is connected to the heat exchanger for conveying part of the secondary return water into the heat exchanger for heating.
5. The three-dimensional pump set of the negative pressure mixed water heating secondary network according to claim 4 is characterized in that: The support (2) is arranged in an inverted right-angled trapezoidal structure, and the second motor (41) is fixedly mounted on the top of the support (2).