CN102147623A - Debugging method for static balance valve of hydraulic system - Google Patents

Abstract

The invention relates to a debugging method for a hydraulic system of a building pipeline, in particular to a debugging method for a static balance valve of the hydraulic system. Aiming at the shortcomings that the static balance valve in the prior art can not bring the balance function into play as the static balance valve is difficult to debug and the like, the method can rapidly and effectively complete the debugging for the static balance valve of the hydraulic system. The technical scheme of the debugging method is as follows: opening the static balance valve and a service valve of each branch to lead the static balance valves and the service valves to be in the fully-open state; closing one branch, except for the closed branch, ensuring the static balance valves and the service valves of other branches not to act; and detecting the closed branch and then calculating the optimal opening.

Description

Hydraulic Power System static balancing valve adjustment method

Technical field

The present invention relates to the adjustment method of house pipeline water conservancy system, relate in particular to a kind of Hydraulic Power System static balancing valve adjustment method.

Background technology

Static balancing valve also claims equalizing valve, manual equalizing valve, number lock equalizing valve, dibit variable valve etc., it is by changing the gap static balancing valve (aperture) of spool and valve seat, the resistance to flow that changes the valve of flowing through is to reach the purpose of regulating flow, its effective object is the resistance of system, static balancing valve can distribute the new water yield according to design-calculated ratio balance, each branch road is increase and decrease in proportion simultaneously, can satisfy the traffic demand of the part load under the preclimax needs, play thermally equilibrated effect.

Since the good control characteristic of static balancing valve, cheap price, and it has been widely used in various water conservancy systems.But along with its shortcoming of extensive utilization of static balancing valve also exposes gradually, at first be the effect that static balancing valve can't be accomplished mobile equilibrium, can't adjust automatically under the situation that takes place to fluctuate when the pipeline Hydraulic Power System.At system stability, static balancing valve can farthest be brought into play its value under few situation that fluctuates, such as being used in northern central heating system; Next static balancing valve debugging problem in the utilization process, the debugging of static balancing valve is a very complicated job always in the complicated pipelines system, often needs repeatedly to regulate repeatedly, has caused the waste of great amount of manpower and physics; The present invention mainly set forth a kind of succinctly, the adjustment method of static balancing valve efficiently, make the value of maximum performance static balancing valve in whole Hydraulic Power System

General Hydraulic Power System has the formation in parallel of a plurality of branch roads, and each branch road is all introduced current from general branch's tube inlet, gets back to total arm exit through service valve, heating radiator/coil pipe, static balancing valve then; Service valve is mainly used in when heating radiator/coil pipe, static balancing valve damage, and turn-offs service valve on the branch road to cut off the branch road current, so just can keep in repair or more heat exchange radiator/coil pipe, static balancing valve.

Summary of the invention

The present invention is primarily aimed at static balancing valve debug difficulties in the prior art, makes it can't bring into play shortcomings such as equilibrium activity, has invented a kind of method that can finish the debugging of Hydraulic Power System static balancing valve fast and effectively.

Above-mentioned technical matters of the present invention is implemented by the following technical programs:

A kind of Hydraulic Power System static balancing valve adjustment method, its step comprises:

Steps A: the design discharge of determining each pipeline heat exchanger in the Hydraulic Power System is

Q _S1、Q _S2.....Q _S(i-1)、Q _Si；

Step B: open the static balancing valve and the service valve of each branch road, make static balancing valve and service valve be in full-gear;

Step C: use portable flow measuring equipment (as Siemens external clamping ultrasonic flow meter FUP1010) to measure the measured discharge Q ' of each branch road ₁, Q ' ₂... Q ' _I-1, Q ' _i, calculate following coefficient:

i＝1......N

The measured discharge of i branch road and design discharge ratio

Q ' _i: the measured discharge of i branch road

Q _Si: the design discharge of i branch road

i＝1......N

Step D: get

Minimum value be

Close the service valve of other all branch roads except that the m branch road, use the portable flow measuring equipment to measure the flow Q of m unit _m, measure the pressure P of main pipe rail porch simultaneously ₁Pressure P with the main pipe rail exit ₂, calculate according to following formula:

${\mathrm{Kv}}_m=Q_m\sqrt{\frac{\mathrm{\ρ}}{|P_1-P_2|}}$

Q _m: the measured discharge m of m branch road ³/ h

|P ₁-P ₂|：100kPa

ρ: fluid density in the branch road

Kv _m: the coefficient of flow of m branch road

Step e: select the i branch road, close the service valve of other all branch roads except that the i branch road, static balancing valve is failure to actuate, and measures the flow Q of i unit _i, measure the pressure P of main pipe rail porch simultaneously ₁Pressure P with the main pipe rail exit ₂, calculate according to following formula:

${\mathrm{Kv}}_i=Q_i\sqrt{\frac{\mathrm{\ρ}}{|P_1-P_2|}}$

Q _i: the measured discharge m of i branch road ³/ h

|P ₁-P ₂|：100kPa

ρ: fluid density in the branch road

Kv _i: the coefficient of flow of i branch road

Regulate the aperture of the static balancing valve of i branch road, make

I no longer comprises m in this step, because m step D end of operation;

Step F: repeating step E, the static balancing valve of regulating branch road makes

Step G: open the service valve of all branch roads, the aperture that the static balancing valve maintenance is adjusted, the static balancing valve of whole like this water conservancy system has promptly been debugged optimum condition;

Above-mentioned Hydraulic Power System static balancing valve adjustment method, preferred, the static balancing valve of m branch road is in full-gear;

Above-mentioned Hydraulic Power System static balancing valve adjustment method, preferred, all branch road parallel connections, set out in the place by same entry pipeline, gets back to same water return pipeline;

Above-mentioned Hydraulic Power System static balancing valve adjustment method, preferred, P1 that measures in step D and step e and P2 measure the inlet pressure P1 of entry pipeline and the top hole pressure P2 of water return pipeline, rather than branch road position entrance and exit;

Above-mentioned Hydraulic Power System static balancing valve adjustment method, preferred, when measuring a certain branch road flow in step D and step e, the service valve of other branch roads must be in closed condition, that is to say that other branch roads do not have flow to flow through;

Above-mentioned Hydraulic Power System static balancing valve adjustment method, preferred, service valve has only two states of switch, and the water that cuts off in the pipeline when being used for overhaul of the equipments and debugging flows.

In sum, the present invention compares with prior art and has following advantage:

At system stability, static balancing valve can farthest be brought into play its value under few situation that fluctuates; In the complicated pipelines system, static balancing valve is farthest brought into play the value of static balancing valve in whole Hydraulic Power System by debugging; Method of the present invention has succinctly, characteristics of high efficiency.

Description of drawings

Fig. 1 is a synoptic diagram of the present invention;

1 is static balancing valve among the figure, and 2 is service valve.

Embodiment

Below by specific embodiment technical scheme of the present invention is described further.

Embodiment 1:

Hydraulic Power System static balancing valve adjustment method step comprises:

Steps A: according to the specification of building Hydraulic Power System, the design discharge of determining each pipeline heat exchanger is Q _S1, Q _S2... ..Q _{S (i-1)}, Q _SiAll branch road parallel connections, set out in the place by same entry pipeline, gets back to same water return pipeline;

Step B: open the static balancing valve and the service valve of each branch road, make static balancing valve and service valve be in full-gear;

Step C: use portable flow measuring equipment (as Siemens external clamping ultrasonic flow meter FUP1010) to measure the measured discharge Q ' of each branch road ₁, Q ' ₂... Q ' _I-1, Q ' _i, calculate following coefficient:

i＝1......N

The measured discharge of i branch road and design discharge ratio

Q ' _i: the measured discharge of i branch road

Q _Si: the design discharge of i branch road

i＝1......N

Step D: get

Minimum value be

Close the service valve of other all branch roads except that the m branch road, use the portable flow measuring equipment to measure the flow Q of m unit _m, measure the pressure P of main pipe rail porch simultaneously ₁Pressure P with the main pipe rail exit ₂, calculate according to following formula:

${\mathrm{Kv}}_m=Q_m\sqrt{\frac{\mathrm{\ρ}}{|P_1-P_2|}}$

Q _m: the measured discharge m of m branch road ³/ h

|P ₁-P ₂|：100kPa

ρ: fluid density in the branch road

Kv _m: the coefficient of flow of m branch road

The static balancing valve of m branch road is in full-gear;

Step e: select the i branch road, close the service valve of other all branch roads except that the i branch road, static balancing valve is failure to actuate, and measures the flow Q of i unit _i, measure the pressure P of main pipe rail porch simultaneously ₁Pressure P with the main pipe rail exit ₂, calculate according to following formula:

${\mathrm{Kv}}_i=Q_i\sqrt{\frac{\mathrm{\ρ}}{|P_1-P_2|}}$

Q _i: the measured discharge m of i branch road ³/ h

|P ₁-P ₂|：100kPa

ρ: fluid density in the branch road

Kv _i: the coefficient of flow of i branch road

Regulate the aperture of the static balancing valve of i branch road, make

I no longer comprises m in this step, because m step D end of operation;

Step F: repeating step E, the static balancing valve of regulating branch road makes

Step G: open the service valve of all branch roads, the aperture that the static balancing valve maintenance is adjusted, the static balancing valve of whole like this water conservancy system has promptly been debugged optimum condition;

P1 that measures in step D and step e and P2 measure the inlet pressure P1 of entry pipeline and the top hole pressure P2 of water return pipeline, rather than branch road position entrance and exit; When measuring a certain branch road flow in step D and step e, the service valve of other branch roads must be in closed condition, that is to say that other branch roads do not have flow to flow through; Service valve has only two states of switch, and the water that cuts off in the pipeline when being used for overhaul of the equipments and debugging flows.

Claims (6)

1. Hydraulic Power System static balancing valve adjustment method, its step comprises:

Steps A: the design discharge of determining each pipeline heat exchanger in the Hydraulic Power System is

Q _S1、Q _S2.....Q _S(i-1)、Q _Si；

Step B: open the static balancing valve and the service valve of each branch road, make static balancing valve and service valve be in full-gear;

Step C: the use traffic measuring equipment is measured the measured discharge Q ' of each branch road ₁, Q ' ₂... Q ' _I-1, Q ' _i, calculate following coefficient:

i＝1......N

The measured discharge of i branch road and design discharge ratio

Q ' _i: the measured discharge of i branch road

Q _Si: the design discharge of i branch road

i＝1......N

Step D: get

Minimum value be the service valve of closing other all branch roads except that the m branch road, the use traffic measuring equipment is measured the flow Q of m unit _m, measure the pressure P of main pipe rail porch simultaneously ₁Pressure P with the main pipe rail exit ₂, calculate according to following formula:

${\mathrm{Kv}}_m=Q_m\sqrt{\frac{\mathrm{\ρ}}{|P_1-P_2|}}$

Q _m: the measured discharge m of m branch road ³/ h

|P ₁-P ₂|：100kPa

ρ: fluid density in the branch road

Kv _m: the coefficient of flow of m branch road

Step e: select the i branch road, close the service valve of other all branch roads except that the i branch road, static balancing valve is failure to actuate, and measures the flow Q of i unit _i, measure the pressure P of main pipe rail porch simultaneously ₁Pressure P with the main pipe rail exit ₂, calculate according to following formula:

${\mathrm{Kv}}_i=Q_i\sqrt{\frac{\mathrm{\ρ}}{|P_1-P_2|}}$

Q _i: the measured discharge m of i branch road ³/ h

|P ₁-P ₂|：100kPa

ρ: fluid density in the branch road

Kv _i: the coefficient of flow of i branch road

Regulate the aperture of the static balancing valve of i branch road, make

This step I does not comprise m;

Step F: repeating step E, the static balancing valve of regulating branch road makes

Step G: open the service valve of all branch roads, the aperture that the static balancing valve maintenance is adjusted.

2. Hydraulic Power System static balancing valve adjustment method according to claim 1 is characterized in that the static balancing valve of m branch road is in full-gear.

3. Hydraulic Power System static balancing valve adjustment method according to claim 1 is characterized in that, all branch road parallel connections, and set out in the place by same entry pipeline, gets back to same water return pipeline.

4. Hydraulic Power System static balancing valve adjustment method according to claim 1 is characterized in that, P1 that measures in step D and step e and P2 are the inlet pressure P1 of measurement entry pipeline and the top hole pressure P2 of water return pipeline.

5. Hydraulic Power System static balancing valve adjustment method according to claim 1 is characterized in that, when measuring a certain branch road flow in step D and step e, the service valve of other branch roads is in closed condition.

6. Hydraulic Power System static balancing valve adjustment method according to claim 1 is characterized in that, service valve has only two states of switch.

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