Heat supply pipe network operation adjustment simulation system

Abstract

The utility model discloses a heat supply pipe network operation regulation simulation system which comprises a plate heat exchanger, a circulating water pump, a water supply mother pipe, a user resistance simulation valve, a user flow regulation valve, a user flow meter, a total flow meter, a water return mother pipe and a frequency conversion control cabinet. A secondary water outlet of the plate heat exchanger is connected with a water inlet of the circulating water pump, and a water outlet of the circulating water pump is connected with an inlet of the water supply main pipe. The water supply main pipe is connected with inlets of the user simulation pipelines, outlets of the user simulation pipelines are connected with the water return main pipe, and user resistance simulation valves, user flow adjusting valves and user flow meters are sequentially connected to the user simulation pipelines. An outlet of the main water return pipe is connected with a secondary water inlet of the plate heat exchanger. According to the utility model, operation training can be carried out on related personnel at any time without being restrained by a heat supply time period, different operation conditions can be simulated, and the operation level of the related personnel can be assessed.

Description

Technical Field

[0001] The utility model relates to the technical field of operation regulation of a heat supply pipeline network, in particular to a simulation system for operation regulation of a heat supply pipeline network. Background Technique

[0002] In the operation of a heat supply pipeline network, the regulation of the flow and heat of the heat supply pipeline network is crucial for the heating effect of heat supply users, directly determining the heating satisfaction of users and the comfort level of users. In the actual on-site operation process by heat operation workers (heat supply pipeline network operation workers), the phenomenon of imbalance in the secondary network often occurs, resulting in uneven heat consumption by heat users, causing heat users near the heat source to be overheated and gradually decreasing to heat users far from the heat source being underheated. Adjusting any valve will affect other branches. However, this requires training heat supply pipeline network operation workers, enhancing their technical level, and passing the assessment. Currently, in the work, experienced heat supply pipeline network operation workers lead new heat supply pipeline network operation workers to conduct operation training during the heating period. The training time is limited and can only be carried out during the heating period; the training working conditions are limited and can only be trained in the situations encountered during work; the training level assessment is limited and there is no patented assessment standard. For this reason, there is an urgent need for a simulation system that can simulate heat supply working conditions. Summary of the Invention

[0003] The purpose of the utility model is to provide a simulation system for operation regulation of a heat supply pipeline network to solve the problems raised in the above background technique.

[0004] A simulation system for operation regulation of a heat supply pipeline network includes: a plate heat exchanger, a circulating water pump, a water supply main pipe, a user resistance simulation valve, a user flow regulating valve, a user flowmeter, a total flowmeter, a return water main pipe, and a frequency conversion control cabinet; the secondary water outlet of the plate heat exchanger is connected to the water inlet of the circulating water pump, the water outlet of the circulating water pump is connected to the inlet of the water supply main pipe, and the other end of the water supply main pipe opposite to the inlet is closed; the water supply main pipe is respectively connected to the inlets of a plurality of user simulation pipelines, the outlets of the user simulation pipelines are connected to the return water main pipe, and a user resistance simulation valve, a user flow regulating valve, and a user flowmeter are sequentially connected on the user simulation pipelines; the outlet of the return water main pipe is connected to the secondary water inlet of the plate heat exchanger, and the total flowmeter is arranged on the pipeline between the outlet of the return water main pipe and the plate heat exchanger; the frequency conversion control cabinet is electrically connected to the user flowmeter, the total flowmeter, and the circulating water pump respectively.

[0005] Furthermore, the system further includes a water replenishing device. The water replenishing device includes a water replenishing tank, a water replenishing pump, and a water replenishing regulating valve. The inlet of the water replenishing pump is connected to the water replenishing tank, the outlet of the water replenishing pump is connected to the inlet of the water replenishing regulating valve, and the outlet of the water regulating valve is connected to the pipeline at the inlet of the circulating water pump. The water replenishing pump is electrically connected to the frequency conversion control cabinet.

[0006] Furthermore, pressure gauges are installed on both the water supply main pipe and the water return main pipe. A manual ball valve is also installed on the pipeline between each user flow regulating valve and the user flow meter.

[0007] Furthermore, an outlet butterfly valve, an outlet ball valve, and an electronic pressure gauge are successively connected on the pipeline between the secondary water outlet of the plate heat exchanger and the water inlet of the circulating pump. An inlet ball valve and an inlet butterfly valve are installed on the pipeline between the total flow meter and the secondary water inlet of the plate heat exchanger. The plate heat exchanger is also provided with a primary pipe network water inlet and a primary pipe network water outlet.

[0008] Furthermore, a circulating pump control module and a make-up water pump control module are installed on the variable frequency control cabinet. The number of user simulation pipelines is 15. Further, the models of the water supply main pipe and the water return main pipe are DN80, and the model of the user simulation pipeline is DN50.

[0009] The working principle of the present utility model is as follows: S1: At the start of the training, the system pipeline is filled with water, the relevant equipment is powered on, the system is in a hot standby state, all user flow regulating valves are fully open, and the user resistance simulation valves are adjusted to different states. The larger the simulated user area, the more the user resistance simulation valve is closed. S2: The area of the user on each user simulation pipeline and the total heating area are given to the trainee. The trainee calculates the total flow according to the total area and the flow area ratio, and calculates the flow of each user simulation pipeline according to the area of each user and the flow area ratio. The flow area ratio is generally selected as 2.0 kg / h·m 2 . S3: The trainee adjusts the frequency of the circulating pump on the variable frequency control cabinet to adjust the flow of the circulating pump to the total flow. S4: The trainee adjusts the opening degree of the flow regulating valve according to the calculated flow of each user simulation pipeline. After adjusting one flow regulating valve, adjust the next one. After all the adjustments are made once, the trainee makes a second fine adjustment according to the size of the user flow meter. After all the flow regulating valves are finely adjusted once, the adjustment level of the trainee is evaluated and a summary study is carried out.

[0010] By adopting the above technical solutions, the simulation of the real working conditions of the heating pipe network is realized. Compared with the prior art, the beneficial effects of the present utility model are: 1. It can conduct operation training for relevant personnel at any time without being restricted by the heating time period; 2. It can simulate different operating conditions; 3. It can simulate the operating conditions to assess the operation level of relevant personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a system diagram of the operation regulation simulation of the heating pipe network of the present utility model.

[0012] In the figure: 1. Plate heat exchanger; 2. Circulating water pump; 3. Water supply main pipe; 4. User simulation pipeline; 5. User resistance simulation valve; 6. User flow regulating valve; 7. User flowmeter; 8. Return water main pipe; 9. Total flowmeter; 10. Frequency conversion control cabinet; 11. Make-up water device; 12. Manual ball valve; 111. Make-up water tank; 112. Make-up water pump; 113. Make-up water regulating valve; 101. Outlet butterfly valve; 102. Outlet ball valve; 103. Electronic pressure gauge; 104. Inlet ball valve; 105. Inlet butterfly valve; 106. Circulating water pump control module; 107. Make-up water pump control module. Specific embodiments

[0013] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0014] Please refer to Figure 1 , a simulation system for the operation regulation of a heat pipe network, including: a plate heat exchanger 1, a circulating water pump 2, a water supply main pipe 3, a user simulation pipeline 4, a user resistance simulation valve 5, a user flow regulating valve 6, a user flowmeter 7, a return water main pipe 8, a total flowmeter 9, and a frequency conversion control cabinet 10; the secondary water outlet of the plate heat exchanger 1 is connected to the inlet of the circulating water pump 2, the outlet of the circulating water pump 2 is connected to the inlet of the water supply main pipe 3, and the other end of the water supply main pipe 3 opposite to the inlet is closed; the water supply main pipe 3 is respectively connected to the inlets of a plurality of user simulation pipelines 4, the outlets of the user simulation pipelines 4 are connected to the return water main pipe 8, and a user resistance simulation valve 5, a user flow regulating valve 6, and a user flowmeter 7 are sequentially connected to the user simulation pipeline 4; the outlet of the return water main pipe 8 is connected to the secondary water inlet of the plate heat exchanger 1, and the total flowmeter 9 is arranged on the pipeline between the outlet of the return water main pipe 8 and the plate heat exchanger 1; the frequency conversion control cabinet 10 is electrically connected to the user flowmeter 7, the total flowmeter 9, and the circulating water pump 2 respectively.

[0015] Furthermore, the system further includes a make-up water device 11. The make-up water device 11 includes a make-up water tank 111, a make-up water pump 112, and a make-up water regulating valve 113. The inlet of the make-up water pump 112 is connected to the make-up water tank 111, the outlet of the make-up water pump 112 is connected to the inlet of the make-up water regulating valve 113, and the outlet of the make-up water regulating valve 113 is connected to the pipeline at the inlet of the circulating water pump 2. The make-up water pump 112 is electrically connected to the frequency conversion control cabinet 10.

[0016] Furthermore, pressure gauges are arranged on both the water supply main pipe 3 and the return water main pipe 8. A manual ball valve 12 is also arranged on the pipeline between each user flow regulating valve and the user flowmeter.

[0017] Further, an outlet butterfly valve 101, an outlet ball valve 102, and an electronic pressure gauge 103 are successively connected to the pipeline between the secondary water outlet of the plate heat exchanger 1 and the water inlet of the circulating water pump 2. An inlet ball valve 104 and an inlet butterfly valve 105 are provided on the pipeline between the total flowmeter 9 and the secondary water inlet of the plate heat exchanger 1. The plate heat exchanger 1 is also provided with a primary pipe network water inlet and a primary pipe network water outlet (not shown in the figure).

[0018] Further, a circulating water pump control module 106 and a make-up water pump control module 107 are provided on the frequency conversion control cabinet 10. The number of user simulation pipelines 4 is 15, of which 3 are spares, and 12 of them are used during normal use. The models of the further water supply main pipe 3 and the water return main pipe 4 are DN80, and the model of the user simulation pipeline 4 is DN50. The circulating water pump control module 106 can adjust the flow rate of the circulating water pump 2 by adjusting the frequency to reach the required amount. The make-up water pump control module 107 can make up water for the system by adjusting the make-up water pump frequency to reach the set pressure.

[0019] When the simulation system trains employees, the following steps can be taken for trainees to practice:

[0020] S1: At the beginning of the training, the system pipeline is filled with water, the relevant equipment is powered on, the system is in a hot standby state, all user flow regulating valves are fully open, and the user resistance simulation valves are adjusted to different states respectively. The larger the simulated user area, the more the user resistance simulation valve is closed.

[0021] S2: Give the trainee the area of each user on the user simulation pipeline and the total heating area. The trainee calculates the total flow rate according to the total area and the flow area ratio, and calculates the flow rate of each user simulation pipeline according to the area of each user and the flow area ratio. The flow area ratio is generally selected as 2.0 kg / h·m 2 。

[0022] S3: The trainee adjusts the frequency of the circulating water pump on the frequency conversion control cabinet to adjust the flow rate of the circulating water pump to the total flow rate.

[0023] S4: The trainee adjusts the opening of the flow regulating valve according to the calculated flow rate of each user simulation pipeline. After adjusting one flow regulating valve, adjust the next one. After all the adjustments are made once, the trainee makes a second fine adjustment according to the size of the user flowmeter. After all the flow regulating valves are finely adjusted once, evaluate the trainee's adjustment level and conduct a summary study.

[0024] The above steps are for reference only. In actual use, they can be flexibly adjusted according to needs.

[0025] When assessing trainees, the following steps can be taken:

[0026] S11: Before the exam starts, the system pipeline is filled with water, relevant equipment is powered on, the system is in a hot standby state, all user flow regulating valves are fully open, and the user resistance simulation valves are adjusted to different states. The larger the simulated user area, the more the user resistance simulation valve is closed.

[0027] S21: Provide the area of each user on the user simulation pipeline and the total heating area to the trainee. Examine the trainee to calculate the total flow rate based on the total area and the flow area ratio by himself / herself, and calculate the flow rate of each user simulation pipeline based on the area of each user and the flow area ratio. The flow area ratio is generally selected as 2.0 kg / h·m 2 。

[0028] S31: Examine the trainee to adjust the frequency of the circulating water pump on the variable frequency control cabinet by himself / herself and adjust the flow rate of the circulating water pump to the total flow rate.

[0029] S41: Examine the trainee to adjust the opening degree of the flow regulating valve according to the calculated flow rate of each user simulation pipeline. After adjusting one flow regulating valve, adjust the next one. After all adjustments are made once, the trainee makes a second fine adjustment according to the size of the user flow meter.

[0030] Score the trainee's operation. The following detailed rules can be referred to:

[0031] The basic score is 100 points, and the total time is 20 minutes. Do not exceed the time limit. The time for the contestant to fill in and calculate is included in the total time. The contestant starts timing when receiving the form and the time ends when raising the hand to indicate the end of adjustment; the total flow rate is set with the flow area ratio of 2.0 kg / h·m 2Take the standard; accurately calculate the adjusted flow rate and total flow rate of each branch line (deduct 0.5 points for each calculation error in the total flow rate or each branch line); if the total flow rate or the flow rate of each branch line exceeds the theoretical value by within 3% (including 3%), no points will be deducted, with a full score of 6 points; for each additional 1% increase after the total flow rate or the flow rate of each branch line exceeds the theoretical value by 3%, deduct 1 point, and the total flow rate or each branch line can be deducted up to 6 points at most; each regulating valve is allowed to be adjusted at most twice (starting to operate the next valve is regarded as the end of the operation of the previous valve, and it is considered as one operation of the previous valve), and deduct 1 point for each excess, with no upper limit; the most unfavorable loop should be filled in correctly, and the regulating valve of the most unfavorable loop should be in the fully open state (taking no operation of this valve as the standard), otherwise deduct 6 points; the contestants are not allowed to exceed the time limit. If the adjustment is not completed, the adjustment result at the time when the time is up will be scored; when the contestant raises his hand to indicate the completion of the adjustment or the time ends, the contestant is not allowed to continue the operation or fill in on the test questions, otherwise deduct 3 points; for each reduction of 60 seconds in the total adjustment time, add 1 point, with a maximum of 5 points added; wear labor protection supplies (safety helmets, work clothes, insulating shoes, gloves) in a standard manner. It is strictly prohibited to wear high heels and clothes with ribbons. For non-standard wearing, deduct 1 point for each item, with a maximum of 2 points deducted; if a contestant's improper operation during the operation may cause damage to the equipment, the referee will give a warning for the first time and will deduct points for the second time, with a maximum of 2 points deducted; for contestants with the same practical assessment score, the one with the smaller average error of the total flow rate and the flow rate of each branch line will rank higher in the practical operation score.

[0032] Obviously, the above embodiments are only examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A simulation system for operation regulation of a heating pipeline network, characterized in that Including: Plate heat exchanger, circulating water pump, water supply main pipe, user resistance simulation valve, user flow regulating valve, user flowmeter, total flowmeter, return water main pipe, variable frequency control cabinet; the secondary water outlet of the plate heat exchanger is connected to the inlet of the circulating water pump, the outlet of the circulating water pump is connected to the inlet of the water supply main pipe, and the other end of the water supply main pipe opposite to the inlet is closed; the water supply main pipe is respectively connected to the inlets of multiple user simulation pipelines, the outlets of the user simulation pipelines are connected to the return water main pipe, and a user resistance simulation valve, a user flow regulating valve, and a user flowmeter are sequentially connected on the user simulation pipelines; the outlet of the return water main pipe is connected to the secondary water inlet of the plate heat exchanger, and the total flowmeter is arranged on the pipeline between the outlet of the return water main pipe and the plate heat exchanger; the variable frequency control cabinet is electrically connected to the user flowmeter, the total flowmeter, and the circulating water pump respectively.

2. The thermal pipeline network operation regulation simulation system according to claim 1, characterized in that The system further includes a water replenishing device.

3. The operation regulation simulation system of the heat pipeline network according to claim 2, characterized in that, The water replenishing device includes a water replenishing tank, a water replenishing pump, and a water replenishing regulating valve. The inlet of the water replenishing pump is connected to the water replenishing tank, the outlet of the water replenishing pump is connected to the inlet of the water replenishing regulating valve, and the outlet of the water regulating valve is connected to the pipeline at the inlet of the circulating water pump.

4. The operation regulation simulation system of the thermal pipeline network according to claim 1, characterized in that Pressure gauges are arranged on both the water supply main pipe and the return water main pipe.

5. The heat pipe network operation regulation simulation system according to claim 1, characterized in that A manual ball valve is further arranged on the pipeline between each user flow regulating valve and the user flowmeter.

6. The simulation system for operation regulation of a thermal pipeline network according to claim 1, characterized in that, An outlet butterfly valve, an outlet ball valve, and an electronic pressure gauge are sequentially connected on the pipeline between the secondary water outlet of the plate heat exchanger and the inlet of the circulating water pump.

7. The thermal pipeline network operation regulation simulation system according to claim 1, wherein An inlet ball valve and an inlet butterfly valve are arranged on the pipeline between the total flowmeter and the secondary water inlet of the plate heat exchanger.

8. The operation regulation simulation system of a heat pipe network according to claim 3, wherein A circulating water pump control module and a water replenishing pump control module are arranged on the variable frequency control cabinet.

9. The thermal pipeline network operation regulation simulation system according to claim 1, wherein, The number of user simulation pipelines is 15.

10. The thermal pipeline network operation regulation simulation system according to claim 1, characterized in that The models of the water supply main pipe and the return water main pipe are DN80, and the model of the user simulation pipeline is DN50.

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