CN212390475U - Bypass pipe constant pressure system of heating system - Google Patents
Bypass pipe constant pressure system of heating system Download PDFInfo
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- CN212390475U CN212390475U CN202021786427.6U CN202021786427U CN212390475U CN 212390475 U CN212390475 U CN 212390475U CN 202021786427 U CN202021786427 U CN 202021786427U CN 212390475 U CN212390475 U CN 212390475U
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Abstract
The utility model discloses a bypass pipe constant pressure system of a heating system, which comprises a water supply pipeline, a water return pipeline, a bypass pipeline, a circulating pump, a heater, a pressure transmitter, a first regulating valve, a second regulating valve, a water replenishing pump, a water replenishing tank and a water replenishing pipeline; the water return pipe is communicated with the water supply pipe through the circulating pump and the heater, the bypass pipe is communicated with the circulating pump in parallel, the first regulating valve and the second regulating valve are sequentially arranged on the bypass pipe along the flowing direction of working media, the pressure transmitter is arranged between the first regulating valve and the second regulating valve, one end of the water supplementing valve is communicated with the water return pipe, the other end of the water supplementing valve is communicated with the water supplementing tank through the water supplementing pump, and the system can effectively guarantee safe and stable operation of the heat supply system.
Description
Technical Field
The utility model belongs to municipal administration heat supply field relates to a heating system's bypass pipe constant pressure system.
Background
Along with the expansion of urban construction, the heat supply area is continuously enlarged, and the urban heat supply pipe network is also continuously extended, so that the coexistence situation of new and old pipe networks is caused. The old pipe network is designed according to the scale of the city at first, the radius of the heat supply pipe network is smaller, the height difference of the geography in the heat supply area is smaller, and the design pressure of the pipe network is low. Due to continuous expansion of cities, the elevation difference of the geographic positions of all heat supply areas is large. The original heating system generally adopts a water replenishing pump constant pressure mode, and a pressure taking point is arranged at the inlet of a circulating pump. The constant pressure value of the constant pressure mode is a static pressure value, the dynamic pressure line of the system is above the static pressure value, and the operation pressure of the pipe network is high. Due to the height difference, the pipeline pressure at the lowest point exceeds the designed value, so that the leakage of a pipe network is caused, and hidden dangers are caused for the safe and stable operation of a heating system.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a heating system's bypass pipe constant pressure system, this system can effectively guarantee heating system's safety and stability operation.
In order to achieve the purpose, the bypass pipe constant pressure system of the heat supply system comprises a water supply pipeline, a water return pipeline, a bypass pipeline, a circulating pump, a heater, a pressure transmitter, a first regulating valve, a second regulating valve, a water replenishing pump, a water replenishing tank and a water replenishing pipeline;
the water return pipe is communicated with the water supply pipe through the circulating pump and the heater, the bypass pipe is communicated with the circulating pump in parallel, a first regulating valve and a second regulating valve are sequentially arranged on the bypass pipe along the flowing direction of working media, the pressure transmitter is arranged between the first regulating valve and the second regulating valve, one end of the water supplementing valve is communicated with the water return pipe, and the other end of the water supplementing valve is communicated with the water supplementing tank through the water supplementing pump.
The water replenishing valve is communicated with the water replenishing tank through a water replenishing pipeline and a water replenishing pump.
The water return pipeline is communicated with a pressure release valve.
The utility model discloses following beneficial effect has:
heating system's bypass pipe constant pressure system when concrete operation, pressure transmitter establishes between first governing valve and second governing valve, through the aperture that changes first governing valve and second governing valve, change bypass constant pressure ratio dynamic adjustment constant pressure value promptly for constant pressure value is between water supply pressure and return water pressure, with dynamic adjustment constant pressure value, with the safe and stable operation of assurance heating system.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the bypass line constant pressure mode water pressure;
fig. 3 is a water pressure diagram when the first regulator valve 4 is closed.
Wherein, 1 is the circulating pump, 2 is the heater, 3 is pressure transmitter, 4 is first governing valve, 5 is the second governing valve, 6 is the relief valve, 7 is the moisturizing valve, 8 is the moisturizing pump, 9 is the moisturizing case.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1, the bypass pipe constant pressure system of the heating system of the present invention includes a water supply pipe, a water return pipe, a bypass pipe, a circulating pump 1, a heater 2, a pressure transmitter 3, a first regulating valve 4, a second regulating valve 5, a water replenishing valve 7, a water replenishing pump 8, a water replenishing tank 9 and a water replenishing pipe; the water return pipeline is linked together through circulating pump 1 and heater 2 and water supply pipe, bypass pipeline and the parallelly connected intercommunication of circulating pump 1, last first governing valve 4 and the second governing valve 5 of having set gradually along working medium flow direction of following of bypass pipeline, pressure transmitter 3 sets up between first governing valve and second governing valve, the one end of moisturizing valve 7 all is linked together with the water return pipeline, the moisturizing valve 7 other end is through moisturizing pump 8 and moisturizing tank 9 intercommunication, moisturizing valve 7 is through moisturizing pipeline and moisturizing pump 8 and moisturizing tank 9 intercommunication, the last intercommunication of water return pipeline has relief valve 6.
The utility model discloses a concrete working process does:
the pressure transmitter 3 is arranged between the first regulating valve 4 and the second regulating valve 5, the constant pressure value is dynamically regulated by changing the opening degrees of the first regulating valve 4 and the second regulating valve 5, namely, changing the bypass constant pressure ratio, so that the constant pressure value is between the water supply pressure and the water return pressure, when the opening degree of the first regulating valve 4 is larger than the opening degree of the second regulating valve 5, the bypass constant pressure ratio is smaller than 1, the pressure release valve 6 is opened, the dynamic pressure line moves downwards, the total pressure head of the heat supply system is reduced, and refer to fig. 2; when the opening degree of the first regulating valve 4 is smaller than that of the second regulating valve 5, the bypass constant pressure ratio is larger than 1, the water supplementing valve 7 is opened, the softened water in the water supplementing tank 9 is supplemented into the system by the water supplementing pump 8, the dynamic pressure line moves upwards, and the total pressure head of the heat supply system is raised; when the constant pressure ratio is infinite, that is, the first regulating valve 4 is closed, the system constant pressure mode is changed into the water replenishing pump 8 constant pressure mode, and the total pressure head of the system reaches the highest value, referring to fig. 3.
The above, it is only the preferred of the present invention. The present invention is not limited to the above embodiments, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. A bypass pipe constant pressure system of a heating system is characterized by comprising a water supply pipeline, a water return pipeline, a bypass pipeline, a circulating pump (1), a heater (2), a pressure transmitter (3), a first regulating valve (4), a second regulating valve (5), a water supplementing valve (7), a water supplementing pump (8), a water supplementing tank (9) and a water supplementing pipeline;
the water supply system comprises a water return pipeline, a bypass pipeline, a first regulating valve (4) and a second regulating valve (5), wherein the water return pipeline is communicated with a water supply pipeline through a circulating pump (1) and a heater (2), the bypass pipeline is communicated with the circulating pump (1) in parallel, the first regulating valve (4) and the second regulating valve (5) are sequentially arranged on the bypass pipeline along the flowing direction of working media, a pressure transmitter (3) is arranged between the first regulating valve and the second regulating valve, one end of a water supplementing valve (7) is communicated with the water return pipeline, and the other end of the water supplementing valve (7).
2. Bypass pipe constant pressure system of heating system according to claim 1, characterized in that the water replenishing valve (7) is communicated with the water replenishing tank (9) through the water replenishing pipe and the water replenishing pump (8).
3. A bypass pipe constant pressure system of a heating system according to claim 1, characterized in that a pressure relief valve (6) is connected to the return pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021786427.6U CN212390475U (en) | 2020-08-24 | 2020-08-24 | Bypass pipe constant pressure system of heating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021786427.6U CN212390475U (en) | 2020-08-24 | 2020-08-24 | Bypass pipe constant pressure system of heating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212390475U true CN212390475U (en) | 2021-01-22 |
Family
ID=74253758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021786427.6U Active CN212390475U (en) | 2020-08-24 | 2020-08-24 | Bypass pipe constant pressure system of heating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212390475U (en) |
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2020
- 2020-08-24 CN CN202021786427.6U patent/CN212390475U/en active Active
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