CN210197457U - High-low pressure matching efficient heating system - Google Patents

Abstract

High-low pressure matches high-efficient heating system. The high pressure load is few in the region, and high pressure pipeline heat supply allowance is great, and when the low pressure load is many, the pressure grade does not match, can't realize direct heat supply. The utility model discloses the constitution includes: this heating system is by the parallelly connected double-circuit structure of constituteing of major loop and spare circuit, the major loop with spare circuit all including two isolation valve (6) and filter (8) of establishing ties in the pipeline, two isolation valve of major loop between set up doublestage relief pressure valve (9), two isolation valve of spare circuit between set up one-level relief pressure valve, the both ends of the doublestage relief pressure valve of major loop with the both ends of the one-level relief pressure valve of spare circuit all be provided with trap (3). The utility model is used for high-efficient heat supply of high-low pressure matching.

Description

High-low pressure matching efficient heating system

The technical field is as follows:

the utility model relates to a heat supply production field, concretely relates to novel high-efficient heating system of high-low pressure matching.

Background art:

at present heating system, mostly for the heat supply end of following the power plant goes out to connect out, adopts the heat supply pipeline that corresponds pressure rating to lay to with hot garden and enterprise, often has pipeline construction cycle length, the degree of difficulty is big, operation utilization rate low grade problem. Current high-pressure pipeline and low-pressure pipeline carry out the heat supply to the garden respectively, and the enterprise of heat is used with low pressure in the present region increases far away in the enterprise of heat is used with high pressure, and the regional hot demand of heat is used with low pressure of high-pressure pipeline cover is flourishing, and when high pressure with the enterprise of heat the reduction in production removal, there is serious idle risk of pipeline even. That is, the high pressure load in the area is less, the heat supply allowance of the high pressure pipeline is larger, and when the low pressure load is more, the pressure grade is not matched, and the direct heat supply can not be realized. If the pipelines are rearranged, the investment is increased, the difficulty of pipeline arrangement is high, the period is long, the rapid increase of the heat load cannot be realized in a short period, and great risks and adverse effects are brought to both the heat supply enterprises and the heat utilization enterprises.

The utility model has the following contents:

the utility model aims at providing a difficult problem such as mismatching can't realize direct heat supply to heat supply pressure grade, newly arrange that the pipeline investment is high, the cycle length, the degree of difficulty is big, provide a high-efficient heating system is matchd to high-low pressure, and fully consider safety, economy, reliable and the stability can of system, realized functions such as the complementary, short-term heat load of high-low pressure capacity inserts fast.

The above purpose is realized by the following technical scheme:

the utility model provides a high-efficient heating system is matchd to high-low pressure, this heating system is the double-circuit structure of being parallelly connected to form by major loop and reserve circuit, the major loop with reserve circuit all including two isolation valves and the filter of establishing ties in the pipeline, two isolation valves of major loop between set up the doublestage relief pressure valve, two isolation valves of reserve circuit between set up the one-level relief pressure valve, the both ends of the doublestage relief pressure valve of major loop with the both ends of the one-level relief pressure valve of reserve circuit all be provided with the trap.

The high-low pressure matching high-efficiency heating system is characterized in that pressure gauges are arranged on two sides of each stage of pressure reducing valve of the main loop and two sides of one stage of pressure reducing valve of the standby loop.

The high-low pressure matches high-efficient heating system, the pipeline of double-circuit structure and district low pressure heat supply intercommunication on set up the relief valve.

The high-low pressure matches high-efficient heating system, the major loop on be provided with electronic isolating valve.

Has the advantages that:

1. the utility model discloses can popularize and apply in multiple field, different fluid water, oil, vapour etc. can all realize hierarchical decompression in the system. For example, a high-pressure and low-pressure water supply system adopts a set of water supply system pressure increasing and reducing system to realize high-pressure and low-pressure two-stage water supply.

2. The utility model discloses can make full use of current high-pressure pipeline surplus, insert the low pressure load fast after the decompression, increase low pressure heat load 15t/h in short-term, according to taking out a back of the body unit operation characteristics, when the heat supply rises, the electric quantity also can promote in step, and the heat supply promotes 15t/h, and synchronous new increase of electric quantity is about 1.6 MWh.

3. The utility model discloses the time limit for a project is short, the cost is low, the quality is excellent, profitable.

Description of the drawings:

FIG. 1 is a schematic structural diagram of the present invention;

in the figure: 1. high-pressure heat supply in the garden; 2. a district high pressure heat supply pipeline; 3. a drain valve; 4. a pressure gauge; 5. a power plant heat supply end; 6. an isolation valve; 7. an electrically operated isolation valve; 8. a filter; 9. a pressure reducing valve; 10. supplying heat at low pressure in the park; 11. a safety valve.

The specific implementation mode is as follows:

example 1:

the utility model provides a high-efficient heating system is matchd to high low pressure, this heating system is the double-circuit structure of being connected in parallel by major loop and reserve circuit and forming, the major loop with reserve circuit all including two isolation valve 6 and the filter 8 of establishing ties in the pipeline, two isolation valve of major loop between set up doublestage relief pressure valve 9, two isolation valve of reserve circuit between set up one-level relief pressure valve, the both ends of the doublestage relief pressure valve of major loop with the both ends of the one-level relief pressure valve of reserve circuit all be provided with trap 3.

Example 2:

according to the high-low pressure matching efficient heating system in the embodiment 1, pressure gauges 4 are arranged on two sides of each stage of pressure reducing valve of the main loop and two sides of one stage of pressure reducing valve of the standby loop.

Example 3:

according to the high-low pressure matching efficient heating system in the embodiment 1 or 2, a safety valve 11 is arranged on a pipeline of the two-way structure communicated with the low-pressure heating of the park.

Example 4:

according to the high-low pressure matching high-efficiency heating system in the embodiment 1, 2 or 3, the main loop is provided with an electric isolating valve 7.

The ZZYP-64C self-operated pressure reducing valve is adopted to realize the pressure reducing function, and a two-way design is adopted, so that the reliability of the whole system is improved. The main road is normally put into operation, the use frequency is high, two-stage series pressure reduction is adopted, wherein the pressure of the first stage is reduced from high pressure to high pressure, and the pressure of the second stage is reduced from high pressure to low pressure, so that the stability of heat supply pressure can be ensured, meanwhile, the high abrasion of the differential pressure of the valve is reduced, and the service life is prolonged; the bypass is used as a backup of the main road, is put into operation under abnormal conditions, has low use frequency, adopts primary decompression for the purpose, directly reduces the high pressure to the high pressure, and fully considers the economical efficiency and saves the manufacturing cost.

The power plant heat supply end 5 is communicated with the park high-pressure heat supply end 1 and the double-way structure through a 2.6Mpa high-pressure heat supply pipeline, and is communicated with the 1.0Mpa park low-pressure heat supply end 10 after being decompressed through the double-way structure.

Isolation valves and drain valves are arranged at the front and the rear of the two paths of pressure reducing valves, one path of pressure reducing valve is put into operation rapidly under the condition of failure of the other path of pressure reducing valve, the continuity of heat supply is guaranteed, meanwhile, the failure valve is isolated and decompressed rapidly, maintenance conditions are created, and the other path of pressure reducing valve is not affected.

The safety valve is arranged at the outlet of the pressure reducing system, the pressure of the pressure reducing valve is suddenly increased to prevent the low-pressure pipeline from being damaged in case of abnormal adjustment, and the safety of the whole system is ensured by releasing the pressure through the safety valve.

The main circuit of the pressure reducing valve is also provided with a remote control electric valve, so that remote control is realized, under the condition of considering load shedding of a unit, the principle of important users of a heat protection network is followed, the isolation and load shedding of the whole pipeline can be quickly realized, the heat supply quality of the important users is ensured, the isolation valve adopts a Z41H-40C cast steel gate valve, the filter adopts a GL41H-40C cast steel filter, the pressure reducing valve adopts a ZZYP-64C self-operated pressure reducing valve, and the drain valve adopts a J41H-40C cast steel stop valve;

the system is used for standby, the pressure relief maintenance is quickly isolated when one fault occurs, the continuity of heat supply can be guaranteed, meanwhile, the safety valve can release overpressure of the system, and the safety of the system is guaranteed. In addition, under the special condition, can long-rangely close the electrically operated gate and realize getting rid of the load of low-voltage line, ensure high pressure important user's heat supply quality.

Claims (4)

1. The utility model provides a high-efficient heating system is matchd to high-low pressure which characterized by: this heating system is the double-circuit structure of being parallelly connected to form by major loop and reserve circuit, the major loop with reserve circuit all including two isolation valves and the filter of establishing ties in the pipeline, two isolation valves of major loop between set up the doublestage relief pressure valve, two isolation valves of reserve circuit between set up the one-level relief pressure valve, the two ends of the doublestage relief pressure valve of major loop with the two ends of the one-level relief pressure valve of reserve circuit all be provided with the trap.

2. The high-low pressure matching high-efficiency heating system according to claim 1, which is characterized in that: pressure gauges are arranged on two sides of each stage of pressure reducing valve of the main loop and two sides of the first stage of pressure reducing valve of the standby loop.

3. The high-low pressure matching high-efficiency heating system according to claim 2, which is characterized in that: and a safety valve is arranged on a pipeline for communicating the two-way structure with the low-pressure heat supply of the park.

4. The high-low pressure matching high-efficiency heating system according to claim 3, which is characterized in that: and an electric isolating valve is arranged on the main loop.

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