Steam metering prepayment device

The significance of installing steam metering prepayment device

With the rapid development of China's economy and the improvement of environmental protection standards, the thermal industry, as the basic supporting facilities, is also growing and large-scale. At present, the heating enterprises exist "heavy equipment, light metering" management thinking, the metering facilities obsolete, a large flow of small flowmeter, motionless, meter installation in the field and no reliable means of theft of steam...... The existence of such phenomena virtually increased the loss of heating enterprises, and easily lead to disputes and charges. With the heat produced once the enterprise arrears is likely to use all kinds of social relationships to the stall, but the heating enterprises it is very difficult to stop gas arrears and arrears, often owe more more, it is difficult to cure, if this disease will spread to other enterprises with heat. Plus individual companies are not honest and hot because enterprises have Guantingbingzhuan, make heating enterprises miserable. Therefore, in order to protect the legitimate rights and interests and the normal operation of heating enterprises, put an end to this kind of injustice, we use mature technology to develop a "steam metering prepaid device", the idea is "first payment, after steam".

The management flow after installing the steam metering prepayment device

Installed in the user field steam metering prepaid device ", the user first steam heating units to pre pay the fee, the cost of heating enterprises by steam pen are confirmed by the finance department, notify the relevant personnel of the user with the IC card recharge recharge software, network management personnel to the scene of the IC cassette" swipe "that device receives the IC card information, will be set according to the steam price, available amount of steam users calculate, and automatic starting valve for steam, dynamic display of remaining steam volume and residual amount and measurement of all parameters.

When the user of the remaining amount is insufficient, the instrument will beep alarm sound to remind customers of payment as soon as possible (and network remote monitoring system can be achieved with the mobile phone SMS notification), or when the balance sheet is equal to zero, will automatically close the valve system, stop heating.

At the same time, in order to avoid the meter installed at the site were artificially changed, our company will provide a special anti-theft box will be unified into the instrument cover, and the use of wireless remote control lock can only be opened in a normal, remote unlock after or as stolen steam behavior, system will automatically shut off the valve steam stop.

Flow chart：

The part of a pipe in a prepayment device

Introduction of main functions of steam metering prepayment device

I. anti-theft control:

In order to prevent illegal users stealing gas, design a meter box, two meter anti-theft control box on the security instrument design; after installation, use the remote control to the instrument box, anti-theft lock, alarm indicator light (red) light, the instrument in the security operation of the state; if he steal gas it is necessary to open a theftproof box or two instrument control box, and in any one meter, but as long as the open any anti-theft box, the system will automatically close the valve, the user can not be opened, only the supply side management personnel to use the remote control decoding can open the valve to normal supply.

Two. Pipe preheating:

Considering the holiday, arrears or stealing gas when the valve will automatically shut down, and then open, such as direct open will cause the pipeline equipment damage, beating, serious casualties of the accident, so we consider the design of the preheating pipe, valve opening (time can be set) to ensure the personnel, equipment and pipeline. Safety.

Three 、 high temperature and pressure special valve:

We use a special customized high temperature and high pressure valve, use temperature of 425 degrees, 1.6, 2.5, 4.0Mpa optional pressure seal, hard alloy grinding by party face sealing, the surface hardness of HRC-65 degrees, can switch ten thousand times the ordinary valve on the market with the seal is generally used PTFE, PTFE, PPL and so on, these the material is not high temperature, more than 150 of the thermoplastic is poor, if in the 280 degree steam switch on a few times even seals can not find, not to mention the seal; I have keenly aware of, can only be used in cold and hot water or chemical raw material, it has the advantage of being antiseptic good.

Four, UPS dual independent power supply:

In order to prevent the AC power outage caused by the instrument to measure, valve cannot be closed, the design of dual UPS independent power supply, one way for a road for settlement instrument, single way valve switch, battery capacity 32Ah, ensure that the AC power meter after the normal measurement, normal valve switch, the valve factory products in general AC power is unable to switch at the same time, also lost the anti-theft function.

Five, multiple lightning protection:

Metering box system motherboard, all designed lightning protection circuit, encountered lightning, lightning protection circuit protection, rapid response, then automatic recovery circuit, such as instrument installed in the open place to fight the lightning protection and grounding rod, to ensure the normal measurement; some users are also considering using chemical plant or corrosive gas environment. We also do on the circuit board three processing: anti-corrosion, moisture-proof, anti oxidation.

Financial analysis of steam metering prepayment device

~ ~ unit price

Pipe caliber (mm)              price (yuan)

I. prices above include:

1 sets of anti vibration vortex street (range ratio 60:1): Hubei South Control Instrument Technology Co., Ltd. production, the product won the national instrument and meter Institute Product Innovation Award

1 sets of pressure transmitters: Hubei South Control Instrument Technology Co., Ltd.

1 Pt100: Hubei South Control Instrument Technology Co., Ltd.

Floating seal electric ball valve 1, 1 stainless steel, stainless steel anti-theft box control box 1, XRC-2600 energy management apparatus 1 sets, 1 sets of control circuit board, UPS special power inverter system, 1 sets of 1 sets, 1 sets of lightning protection system, remote control 1, IC card 1 and recharge software and installation accessories the temperature of 400 DEG C.

Two. Free of charge within 300 kilometers of installation and commissioning, and warranty for two years

Three. Free installation flange, shielding cable

Four. Free IC card recharge device: a project of 1 sets

Five. Contains 17% VAT invoice

Six. Excluding the inspection fee of the local technical supervision department

Economic analysis of installation of steam metering prepayment device

At present, the heating metering facilities of enterprises in Zhejiang are a set of orifice flowmeter and vortex flowmeter, plus a metering box box, a flow meter up to a standby power supply and GPRS module, this configuration price according to different diameter in 40 thousand ~ 60 thousand, compared with this, "heat metering charge prepaid device" although the cost of a one-time increase of 1 to 20 thousand, but at least in six ways to enhance innovation:

The first is to measure a wide range of anti vibration effect and excellent anti vibration vortex flowmeter, the product range ratio measurement of steam over the 20:1, such as the measurement range of DN50 between 0. 3T ~ 3.5t, which for those flickering with steam or deliberately using steam users in both ends is very effective in particular, the traditional vortex flowmeter is difficult to resist the interference of vibration, but the user can do absolutely flowmeter go to open the valve pipe valve number, stop number, but when the hammer does not take the number of measurement to avoid disputes arising from such problems.

Second, the steam metering prepayment device is equipped with an automatic valve control system, which is customized to ensure no leakage at 400 degrees;

The steam metering prepayment device is equipped with a complete electronic anti-theft system;

The steam metering prepayment device is equipped with an anti lightning system to ensure that no lightning damage occurs;

The steam metering prepayment device is equipped with a large capacity UPS system. Within 2 years, the power failure can be guaranteed without interruption for 7 days;

The steam metering prepayment device is equipped with an IC card charging system;

In particular, "steam metering prepayment device" can completely solve the heat supply enterprise arrears trouble, can greatly enhance the work efficiency and management efficiency, the income is immeasurable!

FAQ on "steam metering prepayment device"

~ ~ asked: "steam prepaid device" into the existing monitoring network?

Answer: this device is provided with a GPRS communication module, supports standard MODBUS communication protocol, if the original monitoring system is the standard protocol, can be directly used, if the original system adopts a non standard protocol, our company specially developed to ensure network.

"Asked:" steam prepaid device "can not the meter?

Answer: Yes, users can retain the original flow meter, and the cost will be deducted accordingly.

F more asked: "steam prepaid IC card security device" in it, lost how to do?

Answer: IC card technology is already mature technology, has long been widely used in all walks of life. Each device implements a single card counterpart, which may be reissued if lost.

Q: "steam prepaid device" if the warranty expires, how should I do?

Answer: our company is responsible for the lifelong maintenance of the equipment, after the warranty expires, the principle of collecting fees for the use of material costs + Travel + management fees.

Who will solve the installation and commissioning of the steam prepayment device?

Answer: our company implements the turnkey project. Transportation, installation and commissioning are all handled by our company.

Automatic anti-theft part of the explanation:

After a lot of market research, such as the Development Zone, chemical industry park, thermal power plant, Thermotics Inc, tap water factory; most heating company reaction tube a great loss to the user at the same time, observe the meter the scene, found a variety of gas stealing phenomenon, such as power outages, malicious data modification, instrument selection, malicious tamper and so on; we believe that the above behavior is directly related to the loss; in order to control the system to solve the above problem after the upgrade, more stable, more intelligent control.

Main function:

I. anti-theft control:

In order to prevent illegal users stealing gas, design a meter box, two meter anti-theft control box on the security instrument design; after installation, use the remote control to the instrument box, anti-theft lock, alarm indicator light (red) light, the instrument in the security operation of the state; if he steal gas it is necessary to open a theftproof box or two instrument control box, and in any one meter, but as long as the open any anti-theft box, the system will automatically close the valve, the user can not be opened, only the supply side management personnel to use the remote control decoding can open the valve to normal supply.

Two. Pipe preheating:

Considering the holiday, arrears or stealing gas when the valve will automatically shut down, and then open, such as direct open will cause the pipeline equipment damage, beating, serious casualties of the accident, so we consider the design of the preheating pipe, valve opening (time can be set) to ensure the personnel, equipment and pipeline. Safety.

Three 、 high temperature and pressure special valve:

We use high temperature and high pressure special custom valve, the use of temperature 425 degrees, pressure 1.6, 2.5, 4.0Mpa optional, dense

Figure 7-1,                                  figure 7-2

1.3 protocol measurement

Lower limit of 1.3.1 protocol

Any flowmeter have to ensure the accuracy of the minimum flow, if the flow rate is further reduced, there will be a loss of sensitivity (such as vortex flowmeter) or as a small signal to be removed, which is detrimental to the supplier, is unfair. To this end, they agreed to a flow of traffic limit, in the actual flow rate is less than the prescribed value, measured in accordance with the agreed value (Note: the small signal or stop traffic flow signal is less than the set value when the instrument is removed, the measurement is zero).

The method for setting down the agreement lower limit is shown in Table 2

Upper limit of 1.3.2 protocol

Flow meters over the scope of operation, generally lead to low measurement value, in addition, if the network heating energy consumption will also affect the heating quality of the heat supply network. This not only harms the supplier's interests, but also damages other users' interests. In order to encourage users to plan, does not exceed the set range of operation, the supply and demand sides agreed a "traffic flow limit", and agreed to the "agreement coefficient", when the actual traffic exceeds the prescribed flow limit ", the excess part according to the value of the coefficient multiplied by the protocol for measurement. For example: the "upper limit of traffic" is 100 tons / hour, and the "agreement coefficient" is 2. When the actual flow rate is 150 tons / hour, the meter will show 200 tons / hour [100+ (150-100) * 2]

The method for setting down the agreement lower limit is shown in table 2.

Method for setting up 1.3.3 protocol metering

The instrument into the "trading set", "", "" select "measurement protocol", "print" key "or" select "open" or "off", "close" that enabled protocol measurement "if you choose" open ", then press the" "key to enter the specific settings, see table 2.

After the completion of the protocol metering, press the "key" to return to the "trade set" screen, and then you can set the "time-sharing metering" and "quantitative control" settings.

Press the button to return to the previous menu.

The display mode of 1.3.4 protocol metering

Super "protocol upper limit" shows: super "protocol lower limit" display:

Figure 7-3, figure 7-4

1.4 hour metering

The significance of 1.4.1 time-sharing measurement

In order to encourage users to use at night, day and night to make the load balance, this instrument has the function of measuring points, can be a time of day in a "peak", the period of the charging set according to the "peak price standard, at the same time, a time of day for" Valley ", the period of charging set according to the" valley price "standard, the rest of the time is" flat "," flat billing according to the set price standard.

Setting method of 1.4.2 time-sharing measurement

The instrument into the "trading set" (see Figure 7-2), "" and "" button to select "measure", "print" key or "-" select "open" or "off" into the "closed", said "do not enable the measurement protocol", "open", if you choose to then press the "" key to enter the specific content settings, see table 2.

"Peak" and "Valley" period of time can be arbitrarily set, according to the "user" and "" button to move the cursor, according to the "print" key or "/" selection of peak and valley time, time to 24 hours, the daily maximum 2 section and 2 section of the peak Valley, "00, 00" not set. "Peak" and "Valley" outside the time period is "flat."".

After setting the "time-sharing metering", press "" key to return to the "trade set" screen, and then "quantitative control" will be set.

Press the button to return to the previous menu.

1.4.3 display of time-sharing measurement

Figure 7-5

Peak accumulation: cumulative flow during peak periods

Accumulated flux during valley time

Level: cumulative flow during the normal period

1.5 quantitative control

1.5.1 quantitative control process

The heating industry: users in power plant or Thermotics Inc beforehand pay fee the fee into the steam, the user through the IC card IC card management system for IC card charge, record the user amount paid by users, then the energy management apparatus filled their card installed, receives the IC card information management system, according to the set with steam unit, automatically calculate the available amount of steam users, real-time display the available amount of steam and the remaining amount, and a relay signal to open the steam valve for steam metering, officially started. When the user's remaining amount is insufficient, issue a buzzer alarm until the charge is re charged, and if the remaining amount is zero, the energy meter will automatically shut off the steam valve.

The specific process is shown in Figure 7-6

Fig. 7-6 quantitative control flow chart of thermal power industry

How to use 1.5.2 IC card

Each IC card is only valid for the instrument of energy management unit, IC card keys when used directly with the amount of recharge to the management apparatus (maximum RF distance: 10 cm), beep, instrument graph shows 77 picture, said instrument has received the recharge amount information, and the new the charge amount added to the "balance", and at the same time, the IC card amount to zero, must be preserved until the next recharge use.

The amount is zero for IC card management instrument recharge, will display the picture in Figure 7-8, the "balance" for the original balance.

The IC card of this unit, the instrument will automatically determine and display the "illegal", see figure 7-9.

Figure 7-7,                            figure 7-8,                            figure 7-9

1.5.3 quantitative control setting

The instrument into the "trading set", "", "" select "quantitative control", "print" key or "/" select "automatic" and "open" and "closed" or "off", the function of the significance of table 7 - 1. If you choose "automatic", you need to press "" button to enter the specific settings, see table 2.

"Quantitative control" setting plays a very important role in the management of energy measurement instrument, which determines the accounting unit energy consumption, if you open the "time of measurement", which determines the "peak" and "Valley", "flat" accounting unit, also plays a buzz alarm limit effect. After the "quantitative control" setting is completed, press the "" button to return to the previous menu.

Table 7-1

Content implications of quantitative control

When the margin of the automatic user's purchase is used up, the relay output K1 state is disconnected, and when the margin is zero, the relay output state automatically turns to "closed""

Normally open, regardless of whether the margin is zero, the relay output K1 "state" is always "normally open""

Normally, regardless of whether the margin is zero, the relay output "K1" is always "normally closed""

Turn off the "quantitative control" function

Note: after each instrument is officially put into operation, the set of "flow unit" and "unit price" shall not be changed at will, otherwise, the original margin will change.

When a power failure occurs, the relay output state will be "normally closed""

When setting the "quantitative" value, if you set it again, you can re-enter the "quantitative settings" and use the method of setting negative numbers to reduce the amount.

According to the "cumulative amount cleared" will make "margin" is also cleared.

1.5.4 quantitative control display mode