Circulating water leak detection device in industrial calcium carbide furnace based on pressure signal

Abstract

The utility model discloses an industrial calcium carbide furnace internal circulating water leak detection device based on pressure signals, which comprises a variable frequency circulating water pump, an inlet of the variable frequency circulating water pump is connected with a cooling tower pool through a pipeline, the cooling tower pool is provided with a calcium carbide furnace water collector through a pipeline, and an outlet of the variable frequency circulating water pump is connected with a calcium carbide furnace water distributor. An outlet of the calcium carbide furnace water distributor is connected with a calcium carbide furnace cooling unit through a pipeline, the calcium carbide furnace cooling unit is connected with a calcium carbide furnace water collector, the calcium carbide furnace water distributor is provided with a water distributor pressure remote transmission instrument, and the calcium carbide furnace water collector is provided with a water collector pressure remote transmission instrument. And the water segregator pressure remote transmission instrument and the water collector pressure remote transmission instrument are electrically connected with a control room background feedback analyzer. According to the industrial calcium carbide furnace internal circulating water leakage detection device based on the pressure signal, accurate positioning of leakage points in the calcium carbide furnace is realized by eliminating false alarms caused by instrument faults.

Description

TECHNICAL FIELD

[0001] The utility model belongs to calcium carbide furnace safe production technical field, more particularly to based on pressure signal's industry calcium carbide furnace inner circulating water leak detector. BACKGROUND

[0002] The circulating cooling water system in the calcium carbide furnace is an important component of the calcium carbide production system, and the normal operation of the circulating cooling water system is not only the basis for ensuring the service life of the calcium carbide furnace, the yield and quality of calcium carbide products, but also the guarantee for the safe operation of the calcium carbide furnace. When a large amount of water leaks in the furnace, a large amount of cooling water directly enters the molten pool and reacts with the semi-finished products and finished products in the molten pool to produce a large amount of acetylene gas. At this time, if the observation door is opened for inspection, a large explosion is likely to occur, causing heavy losses of equipment and personnel. Therefore, the leak detection of the calcium carbide furnace is very important.

[0003] In the traditional calcium carbide furnace leak detection technology, the furnace cannot be directly observed due to the obstruction of the furnace cover in the sealed calcium carbide furnace, and the reflection of the instrument must be used for judgment. Usually, the hydrogen content in the furnace gas is analyzed by a furnace gas analyzer through a furnace gas pipe, and whether the calcium carbide furnace leaks water is judged according to the change of the index. The moisture in the calcium carbide furnace reacts with the carbon in the furnace at high temperature to decompose hydrogen, so the change of hydrogen content can be used to accurately judge whether the furnace leaks water. However, the dust content in the furnace gas is high, and the on-line analyzer often fails due to dust blockage in the air pipe. Moreover, since the cooling branch of the calcium carbide furnace is usually more than 100, it is difficult to accurately locate the leakage point, which causes great difficulty in the leak detection of the calcium carbide furnace. If a flow meter is installed on each calcium carbide furnace cooling branch to compare the supply and return water flow to judge the leakage, it will have a large investment and a large flow fluctuation range, which will affect the identification of each branch leakage. In the latest patent, a new technology is applied to the calcium carbide furnace circulating water system, which can only install a flow meter on each cooling branch return water, but this technology also needs a large number of flow meters, which has the problem of high cost, and is only suitable for closed circulating water systems. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a circulating water leak detection device for an industrial calcium carbide furnace based on pressure signals, which can exclude false alarms caused by instrument failure and accurately locate the leakage point in the calcium carbide furnace.

[0005] The utility model adopts the technical scheme of the industrial calcium carbide furnace inner circulating water leak detection device based on pressure signal, including frequency conversion circulating water pump, the frequency conversion circulating water pump import is connected with cooling tower pool through the pipeline, cooling tower pool has calcium carbide furnace water collector through the pipeline, the calcium carbide furnace water collector is connected with calcium carbide furnace water distributor, and the calcium carbide furnace water distributor export is connected with calcium carbide furnace cooling unit through the pipeline, and the calcium carbide furnace cooling unit is connected with calcium carbide furnace water collector, and the calcium carbide furnace water distributor is equipped with water distributor pressure remote instrument, and the calcium carbide furnace water collector is equipped with water collector pressure remote instrument, and the water distributor pressure remote instrument is electrically connected with the control room back end feedback analyzer of water collector pressure remote instrument.

[0006] The utility model technical scheme's feature still lies in,

[0007] The calcium carbide furnace cooling unit includes multiple heat exchangers, and the multiple heat exchanger inlets are respectively connected to the calcium carbide furnace water distributor outlet pipeline through the pipelines.

[0008] The pipeline connected to the multiple heat exchanger inlets is respectively equipped with calcium carbide furnace circulating water branch inlet pressure remote instrument and calcium carbide furnace circulating water branch inlet valve, which are electrically connected to each other, the multiple calcium carbide furnace circulating water branch inlet valves are arranged at one end close to the calcium carbide furnace water distributor, and the multiple calcium carbide furnace circulating water branch inlet pressure remote instruments are electrically connected to the control room back end feedback analyzer.

[0009] The pipeline connected to the multiple heat exchanger outlets is respectively equipped with calcium carbide furnace circulating water branch outlet pressure remote instrument and calcium carbide furnace circulating water branch outlet valve, which are connected to each other, the multiple calcium carbide furnace circulating water branch outlet valves are arranged at one end close to the calcium carbide furnace water collector, and the multiple calcium carbide furnace circulating water branch outlet pressure remote instruments are respectively electrically connected to the control room back end feedback analyzer.

[0010] The pipeline connected to the frequency conversion circulating water pump inlet and the cooling tower pool is equipped with a circulating water pump inlet valve.

[0011] The pipeline connected to the frequency conversion circulating water pump outlet and the calcium carbide furnace water distributor is equipped with a frequency conversion circulating water pump outlet valve, a circulating water pump outlet pressure remote instrument and a calcium carbide furnace water distributor inlet valve, the calcium carbide furnace water distributor inlet valve is arranged at one end close to the calcium carbide furnace water distributor, and the frequency conversion circulating water pump outlet valve is arranged between the circulating water pump outlet pressure remote instrument and the frequency conversion circulating water pump.

[0012] The circulating water pump outlet pressure remote instrument is electrically connected to the water distributor pressure remote instrument.

[0013] The pipeline connected to the cooling tower pool and the calcium carbide furnace water collector is equipped with a calcium carbide furnace water collector inlet valve.

[0014] The control room back end feedback analyzer is electrically connected to an alarm.

[0015] Compared with the prior art, the industrial calcium carbide furnace circulating water leak detection device based on a pressure signal has the advantages that:

[0016] (1) The industrial calcium carbide furnace circulating water leak detection device based on a pressure signal is not only suitable for a closed circulating water system of a calcium carbide furnace, but also suitable for an open circulating water system of a calcium carbide furnace, and has wide applicability.

[0017] (2) The industrial calcium carbide furnace circulating water leak detection device based on a pressure signal is different from a conventional calcium carbide furnace cooling water leak detection system, does not need to install multiple flow meters on each branch, and can realize a leak detection function only by using a high-precision remote pressure instrument, thereby saving a large amount of investment for safe production of an enterprise.

[0018] (3) The industrial calcium carbide furnace circulating water leak detection device based on a pressure signal adopts a pressure signal for water leakage determination, has higher precision than a flow signal, and has higher accuracy for leak detection, can not only realize a leak detection function of a calcium carbide furnace, but also realize accurate positioning of a specific water leakage cooling branch. In addition, when water leakage is determined, double verification is performed by using an auxiliary means, so that a leak detection result is not misjudged due to instrument failure, and normal production of the calcium carbide furnace is affected. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic view of the industrial calcium carbide furnace circulating water leak detection device based on a pressure signal of the utility model;

[0020] Figure 2 is a working schematic view of the industrial calcium carbide furnace circulating water leak detection device based on a pressure signal of the utility model.

[0021] In the figure, 1. frequency conversion circulating water pump; 2. cooling tower pool; 3. calcium carbide furnace water distributor; 4. calcium carbide furnace cooling unit; 5. calcium carbide furnace water collector; 6. control room background feedback analyzer; 7. alarm; 8. circulating water pump water inlet valve; 9. circulating water pump outlet pressure remote instrument; 10. distributor pressure remote instrument; 11. calcium carbide furnace circulating water branch water inlet pressure remote instrument; 12. calcium carbide furnace water distributor water inlet valve; 13. calcium carbide furnace circulating water branch water inlet valve; 14. calcium carbide furnace circulating water branch water outlet pressure remote instrument; 15. calcium carbide furnace circulating water branch water outlet valve; 16. collector pressure remote instrument; 17. calcium carbide furnace water collector water inlet valve; 18. frequency conversion circulating water pump water outlet valve. DETAILED DESCRIPTION

[0022] The utility model will be explained in detail below in combination with the drawings and specific embodiments.

[0023] The utility model provides industrial calcium carbide furnace circulating water leak detection device based on pressure signal, such as Figure 1As shown, including variable frequency circulating water pump 1, variable frequency circulating water pump 1 inlet is connected with cooling tower pool 2 through pipeline, variable frequency circulating water pump 1 inlet and cooling tower pool 2 connected with the pipeline is equipped with circulating water pump water valve 8;Cooling tower pool 2 through pipeline has calcium carbide furnace water collector 5, variable frequency circulating water pump 1 outlet is connected with calcium carbide furnace water distributor 3, calcium carbide furnace water distributor 3 outlet is connected with calcium carbide furnace cooling unit 4 through pipeline, calcium carbide furnace cooling unit 4 and calcium carbide furnace water collector 5 are connected, calcium carbide furnace water distributor 3 is equipped with distributor pressure remote instrument 10, calcium carbide furnace water collector 5 is equipped with collector pressure remote instrument 16, distributor pressure remote instrument 10 and collector pressure remote instrument 16 are electrically connected with control room background feedback analyzer 6.

[0024] Among them, the calcium carbide furnace cooling unit 4 includes a plurality of heat exchangers, the plurality of heat exchanger inlets are connected to the calcium carbide furnace water distributor 3 outlet pipe through the pipeline respectively, the plurality of heat exchanger outlets are connected to the calcium carbide furnace water collector 5 inlet pipe through the pipeline respectively, the plurality of heat exchanger inlets are equipped with calcium carbide furnace circulating water branch inlet pressure remote instrument 11 and calcium carbide furnace circulating water branch inlet valve 13 which are electrically connected with each other, the plurality of calcium carbide furnace circulating water branch inlet valve 13 are arranged at one end close to the calcium carbide furnace water distributor 3, the plurality of calcium carbide furnace circulating water branch inlet pressure remote instrument 11 are electrically connected to the control room background feedback analyzer 6, the plurality of heat exchanger outlets are equipped with calcium carbide furnace circulating water branch outlet pressure remote instrument 14 and calcium carbide furnace circulating water branch outlet valve 15 which are connected with each other, the plurality of calcium carbide furnace circulating water branch outlet valve 15 are arranged at one end close to the calcium carbide furnace water collector 5;The plurality of calcium carbide furnace circulating water branch outlet pressure remote instrument 14 are electrically connected to the control room background feedback analyzer 6 respectively;Variable frequency circulating water pump 1 outlet and calcium carbide furnace water distributor 3 connected pipe is equipped with variable frequency circulating water pump outlet valve 18, circulating water pump outlet pressure remote instrument 9 and calcium carbide furnace water distributor inlet valve 12, calcium carbide furnace water distributor inlet valve 12 is arranged at one end close to the calcium carbide furnace water distributor 3, variable frequency circulating water pump outlet valve 18 is arranged between circulating water pump outlet pressure remote instrument and variable frequency circulating water pump 1;Circulating water pump outlet pressure remote instrument 9 and distributor pressure remote instrument 10 are electrically connected;Cooling tower pool 2 and calcium carbide furnace water collector 5 connected pipe is equipped with calcium carbide furnace water collector inlet valve 17;The control room background feedback analyzer 6 is electrically connected with alarm 7.

[0025] The working principle of the industrial calcium carbide furnace circulating water leak detection device based on pressure signals is as follows: circulating cooling water is taken from the cooling tower pool 2 by the variable frequency circulating water pump 1 after being pressurized, and is sent to the calcium carbide furnace water distributor 3, the variable frequency circulating water pump 1 adopts frequency conversion control, and the water supply pressure of the circulating water system and the water supply pressure of the distributor can be ensured to be stable. The calcium carbide furnace water distributor 3 divides into multiple branches, and divides the circulating water into each branch heat exchanger in the calcium carbide furnace cooling unit 4, completes cooling of each element in the furnace, and the circulating water of each branch after heat exchange is uniformly collected to the calcium carbide furnace water collector 5. The inlet and outlet of each cooling branch heat exchanger are close to one side of the calcium carbide furnace water collector 5 and the calcium carbide furnace water distributor 3, and are provided with valves and high-precision pressure remote instruments, so as to facilitate adjustment of the pressure and water quantity of each branch. The calcium carbide furnace water collector 5 sends the heated circulating water back to the cooling tower, and after being cooled by the cooling tower, falls into the lower cooling tower pool 2, and is then pumped by the variable frequency circulating water pump 1 to the calcium carbide furnace water distributor 3, so as to complete the whole circulation process.

[0026] As shown in Figure 2 , the specific leak detection process of the industrial calcium carbide furnace circulating water leak detection device based on pressure signals is as follows:

[0027] Step 1, first collect the data of the remote pressure instruments in the leak detection device, and transmit the data to the control room background feedback analyzer 6;

[0028] Step 2, the control room background feedback analyzer 6 processes data, adjusts the inlet and outlet valves of each heat exchanger pipe, and controls the pressure difference between the inlet and outlet valves of each heat exchanger branch to be the same set value;

[0029] The set value is any value in the range of 20-50kPa.

[0030] Step 3, the control room background feedback analyzer 6 analyzes and compares the data collected by the inlet and outlet remote pressure instruments of each pipe, first uses the pressure difference of each heat exchanger inlet and outlet valve to judge whether there is a leak in the calcium carbide furnace, when the pressure difference of the inlet valve of a certain heat exchanger branch is higher than that of the outlet valve of the heat exchanger, then the branch may have a water leak, and step 4 is entered;

[0031] Step 4, the existence of leaks heat exchanger branch inlet pressure remote instrument values and other lateral heat exchanger pressure remote instrument values for horizontal comparison, to determine whether both points are lower than the parallel point pressure, if so, it is proved that the branch exists leak, then the control room background feedback analyzer 6 connected alarm 7 strong alarm and indicator light strong flicker, pop-up leak pop-up window, prompt the relevant technical personnel to cut off the calcium carbide furnace circulating water branch valve for subsequent maintenance. If one of the pressure is not lower than the parallel point pressure, it is proved that the pressure remote instrument or some heat exchanger pipe inlet and outlet pressure remote instrument set by the calcium carbide furnace water collector 5 or calcium carbide furnace water distributor 3 exists error, by the technical personnel through the comparison of data for investigation.

[0032] More specifically:

[0033] During the normal operation of the calcium carbide furnace circulating water system, since the pressure difference of the inlet and outlet valve of each heat exchanger pipe is adjusted to a fixed value, for each heat exchanger branch, according to the local resistance loss formula: h f =ξ(v 2 / 2g) can be known, wherein ξ represents the local resistance coefficient, v represents the flow rate, and g represents the acceleration of gravity. Since the pressure loss of the two valves is consistent, i.e. h f is the same, and in the case of no leakage of the branch pipe, the flow rate of the inlet and outlet is the same, i.e. v 进 and v 出Since the inlet and outlet valves are the same, the ξ value is constant when the valves are not manually adjusted. When a leak occurs in a heat exchanger branch, the outlet velocity will be lower than the inlet velocity. At this time, the pressure drop at the inlet valve of the heat exchanger branch will be higher than the pressure drop at the outlet valve. The system will then indicate a leak in the branch. However, due to the large number of pressure gauges in the system, further verification of the instrument accuracy is required. First, compare the values ​​of the remote pressure gauges at the inlet and outlet of the heat exchanger branch with those of other parallel heat exchanger units to determine if the pressures at both points are lower than the pressures at the parallel measuring points. When a leak actually exists, the back pressure after the branch inlet valve decreases, the valve pressure difference increases, and therefore the inlet pressure value of the heat exchanger branch decreases. Compare this value with the remote pressure gauge values ​​at the inlet of other heat exchanger branches. If the test shows that the values ​​are the same as those at the inlet of other parallel heat exchanger branches, it means there is no leak. The inconsistency in the inlet and outlet pressure difference of the heat exchanger branch is caused by an instrument malfunction, and the instrument should be repaired accordingly. Similarly, when a leak actually exists, the pressure before the outlet valve of the heat exchanger branch decreases, the valve pressure differential decreases, and therefore the outlet pressure of the heat exchanger branch decreases. A horizontal comparison with the remote instrument readings of the inlet pressure of other parallel heat exchanger branches shows that the outlet pressure should be lower than that of other branches. If the test finds that the remote instrument readings of the inlet pressure of other parallel heat exchanger branches are the same, it means there is no leak. The inconsistency in the inlet and outlet pressure differentials of the branch is caused by an instrument malfunction, and the instrument should be repaired accordingly. Through these two verifications, accurate leak detection of the calcium carbide furnace can be achieved without error.

[0034] Example 1

[0035] This embodiment provides a leak detection device for circulating water in an industrial calcium carbide furnace based on pressure signals, such as... Figure 1 As shown, the system includes a variable frequency circulating water pump 1, whose inlet is connected to a cooling tower pool 2 via a pipe, and a calcium carbide furnace water collector 5 via a pipe in the cooling tower pool 2. The outlet of the variable frequency circulating water pump 1 is connected to a calcium carbide furnace water distributor 3, and the outlet of the calcium carbide furnace water distributor 3 is connected to a calcium carbide furnace cooling unit 4 via a pipe. The calcium carbide furnace cooling unit 4 is connected to the calcium carbide furnace water collector 5. The calcium carbide furnace water distributor 3 is equipped with a distributor pressure remote transmission instrument 10, and the calcium carbide furnace water collector 5 is equipped with a collector pressure remote transmission instrument 16. The distributor pressure remote transmission instrument 10 and the collector pressure remote transmission instrument 16 are electrically connected to a control room background feedback analyzer 6.

[0036] The circulating cooling water is drawn from the cooling tower pool 2 by a variable frequency circulating water pump 1, pressurized, and then sent to the calcium carbide furnace water distributor 3. The variable frequency circulating water pump 1 uses variable frequency control to ensure stable water supply pressure in the circulating water system and the distributor. The calcium carbide furnace water distributor 3 branches into multiple lines, distributing the circulating water to various branches in the calcium carbide furnace cooling unit 4 to cool the components inside the furnace. After heat exchange, the circulating water from all branches is collected in the calcium carbide furnace water collector 5. Valves and high-precision pressure remote transmission instruments are installed at the inlet and outlet of each cooling branch near the calcium carbide furnace water collector 5 and the calcium carbide furnace water distributor 3 to facilitate the adjustment of pressure and water volume in each branch. The calcium carbide furnace water collector 5 then sends the heated circulating water back to the cooling tower, where it is cooled and falls into the cooling tower pool 2 below. The variable frequency circulating water pump 1 then pumps the water back to the calcium carbide furnace water distributor 3, thus completing the entire circulation process.

[0037] Example 2

[0038] This embodiment provides a leak detection device for circulating water in an industrial calcium carbide furnace based on pressure signals, such as... Figure 1 As shown, the system includes a variable frequency circulating water pump 1, whose inlet is connected to a cooling tower pool 2 via a pipe. The cooling tower pool 2 is connected to a calcium carbide furnace water collector 5 via a pipe. The outlet of the variable frequency circulating water pump 1 is connected to a calcium carbide furnace water distributor 3. The outlet of the calcium carbide furnace water distributor 3 is connected to a calcium carbide furnace cooling unit 4 via a pipe. The calcium carbide furnace cooling unit 4 is connected to the calcium carbide furnace water collector 5. The calcium carbide furnace water distributor 3 is equipped with a distributor pressure remote transmission instrument 10. The calcium carbide furnace water collector 5 is equipped with a collector pressure remote transmission instrument 16. The distributor pressure remote transmission instrument 10 and the collector pressure remote transmission instrument 16 are electrically connected to a control room background feedback analyzer 6. The calcium carbide furnace cooling unit 4 includes multiple heat exchangers. The inlets of the multiple heat exchangers are connected to the outlet pipes of the calcium carbide furnace water distributor 3 via pipes, and the outlets of the multiple heat exchangers are connected to the inlet pipes of the calcium carbide furnace water collector 5 via pipes.

[0039] Circulating cooling water is drawn from the cooling tower pool 2 by a variable frequency circulating water pump 1, pressurized, and then sent to the calcium carbide furnace water distributor 3. The variable frequency circulating water pump 1 uses variable frequency control to ensure stable water supply pressure in the circulating water system and the distributor. The calcium carbide furnace water distributor 3 branches into multiple lines, distributing circulating water to the heat exchangers in each branch of the calcium carbide furnace cooling unit 4 to cool the components inside the furnace. After heat exchange, the circulating water from all branches is collected in the calcium carbide furnace water collector 5. Valves and high-precision pressure remote transmission instruments are installed on the inlet and outlet sides of each cooling branch heat exchanger near the calcium carbide furnace water collector 5 and the calcium carbide furnace water distributor 3 to facilitate the adjustment of pressure and water volume in each branch. The calcium carbide furnace water collector 5 then sends the heated circulating water back to the cooling tower, where it is cooled and falls into the cooling tower pool 2 below. The variable frequency circulating water pump 1 then pumps the water back to the calcium carbide furnace water distributor 3, thus completing the entire circulation process.

[0040] Example 3

[0041] This embodiment provides a leak detection device for circulating water in an industrial calcium carbide furnace based on pressure signals, such as... Figure 1 As shown, the system includes a variable frequency circulating water pump 1. The inlet of the variable frequency circulating water pump 1 is connected to a cooling tower pool 2 via a pipe. The cooling tower pool 2 is connected to a calcium carbide furnace water collector 5 via a pipe. The outlet of the variable frequency circulating water pump 1 is connected to a calcium carbide furnace water distributor 3. The outlet of the calcium carbide furnace water distributor 3 is connected to a calcium carbide furnace cooling unit 4 via a pipe. The calcium carbide furnace cooling unit 4 is connected to the calcium carbide furnace water collector 5. The calcium carbide furnace water distributor 3 is equipped with a distributor pressure remote transmission instrument 10. The calcium carbide furnace water collector 5 is equipped with a collector pressure remote transmission instrument 16. The distributor pressure remote transmission instrument 10 and the collector pressure remote transmission instrument 16 are electrically connected to a control room backend feedback system. The analyzer 6 and the calcium carbide furnace cooling unit 4 include multiple heat exchangers. The inlets of the multiple heat exchangers are connected to the outlet pipes of the calcium carbide furnace water separator 3 through pipes. The outlets of the multiple heat exchangers are connected to the inlet pipes of the calcium carbide furnace water collector 5 through pipes. Each of the pipes connected to the inlets of the multiple heat exchangers is equipped with a remote water pressure transmitter 11 for the calcium carbide furnace circulating water branch and a water inlet valve 13 for the calcium carbide furnace circulating water branch. The water inlet valves 13 for the multiple calcium carbide furnace circulating water branch are located at one end near the calcium carbide furnace water separator 3. The remote water pressure transmitter 11 for the multiple calcium carbide furnace circulating water branch is electrically connected to the control room background feedback analyzer 6.

[0042] Example 4

[0043] This embodiment provides a leak detection device for circulating water in an industrial calcium carbide furnace based on pressure signals, such as... Figure 1As shown, including variable frequency circulating water pump 1, variable frequency circulating water pump 1 inlet is connected with cooling tower pool 2 through pipeline, cooling tower pool 2 has calcium carbide furnace water collector 5 through pipeline, variable frequency circulating water pump 1 outlet is connected with calcium carbide furnace water distributor 3, calcium carbide furnace water distributor 3 outlet is connected with calcium carbide furnace cooling unit 4 through pipeline, calcium carbide furnace cooling unit 4 is connected with calcium carbide furnace water collector 5, calcium carbide furnace water distributor 3 is provided with distributor pressure remote instrument 10, calcium carbide furnace water collector 5 is provided with collector pressure remote instrument 16, distributor pressure remote instrument 10 and collector pressure remote instrument 16 are electrically connected with control room background feedback analyzer 6, calcium carbide furnace cooling unit 4 includes multiple heat exchangers, multiple heat exchanger inlets are respectively connected to calcium carbide furnace water distributor 3 outlet pipeline through pipeline, multiple heat exchanger outlets are respectively connected to calcium carbide furnace water collector 5 inlet pipeline through pipeline, multiple heat exchanger inlet pipelines are all provided with calcium carbide furnace circulating water branch inlet pressure remote instrument 11 and calcium carbide furnace circulating water branch inlet valve 13 which are electrically connected with each other, multiple calcium carbide furnace circulating water branch inlet valves 13 are arranged at one end close to calcium carbide furnace water distributor 3, multiple calcium carbide furnace circulating water branch inlet pressure remote instruments 11 are electrically connected to control room background feedback analyzer 6, multiple heat exchanger outlet pipelines are all provided with calcium carbide furnace circulating water branch outlet pressure remote instrument 14 and calcium carbide furnace circulating water branch outlet valve 15 which are connected with each other, multiple calcium carbide furnace circulating water branch outlet valves 15 are arranged at one end close to calcium carbide furnace water collector 5; Multiple calcium carbide furnace circulating water branch outlet pressure remote instruments 14 are respectively electrically connected to control room background feedback analyzer 6.

[0044] Example 5

[0045] The embodiment provides a pressure signal-based industrial calcium carbide furnace circulating water leak detection device, which comprises a variable frequency circulating water pump 1, a cooling tower pool 2 connected to the variable frequency circulating water pump 1 through a pipeline, a calcium carbide furnace water collector 5 connected to the cooling tower pool 2 through a pipeline, a calcium carbide furnace water distributor 3 connected to the variable frequency circulating water pump 1, a calcium carbide furnace cooling unit 4 connected to the calcium carbide furnace water distributor 3 through a pipeline, a distributor pressure remote instrument 10 arranged on the calcium carbide furnace water distributor 3, a collector pressure remote instrument 16 arranged on the calcium carbide furnace water collector 5, and a control room background feedback analyzer 6 electrically connected to the distributor pressure remote instrument 10 and the collector pressure remote instrument 16. Figure 1As shown, including variable frequency circulating water pump 1, variable frequency circulating water pump 1 inlet is connected by pipeline with cooling tower pool 2, cooling tower pool 2 is connected by pipeline with calcium carbide furnace water collector 5, variable frequency circulating water pump 1 outlet is connected with calcium carbide furnace water distributor 3, calcium carbide furnace water distributor 3 outlet is connected by pipeline with calcium carbide furnace cooling unit 4, calcium carbide furnace cooling unit 4 is connected with calcium carbide furnace water collector 5, calcium carbide furnace water distributor 3 is provided with distributor pressure remote instrument 10, calcium carbide furnace water collector 5 is provided with collector pressure remote instrument 16, distributor pressure remote instrument 10 and collector pressure remote instrument 16 are electrically connected with control room background feedback analyzer 6, calcium carbide furnace cooling unit 4 includes a plurality of heat exchangers, a plurality of heat exchanger inlets are connected to the calcium carbide furnace water distributor 3 outlet pipeline by pipeline respectively, a plurality of heat exchanger outlets are connected to the calcium carbide furnace water collector 5 inlet pipeline by pipeline respectively, a plurality of heat exchanger inlet pipelines are provided with calcium carbide furnace circulating water branch inlet pressure remote instrument 11 and calcium carbide furnace circulating water branch inlet valve 13 which are electrically connected with each other, a plurality of calcium carbide furnace circulating water branch inlet valves 13 are arranged at one end close to calcium carbide furnace water distributor 3, a plurality of calcium carbide furnace circulating water branch inlet pressure remote instruments 11 are electrically connected to control room background feedback analyzer 6, a plurality of heat exchanger outlet pipelines are provided with calcium carbide furnace circulating water branch outlet pressure remote instrument 14 and calcium carbide furnace circulating water branch outlet valve 15 which are connected with each other, a plurality of calcium carbide furnace circulating water branch outlet valves 15 are arranged at one end close to calcium carbide furnace water collector 5; a plurality of calcium carbide furnace circulating water branch outlet pressure remote instruments 14 are electrically connected to control room background feedback analyzer 6 respectively, variable frequency circulating water pump 1 inlet and cooling tower pool 2 connected pipeline is provided with circulating water pump inlet valve 8.

[0046] Example 6

[0047] The embodiment provides a pressure signal based industrial calcium carbide furnace circulating water leak detection device, which comprises a variable frequency circulating water pump 1, a calcium carbide furnace water collector 5, a calcium carbide furnace water distributor 3, a calcium carbide furnace cooling unit 4, a control room background feedback analyzer 6, a calcium carbide furnace circulating water branch inlet pressure remote instrument 11, a calcium carbide furnace circulating water branch inlet valve 13, a calcium carbide furnace circulating water branch outlet pressure remote instrument 14 and a calcium carbide furnace circulating water branch outlet valve 15. Figure 1As shown, including variable frequency circulating water pump 1, variable frequency circulating water pump 1 inlet is connected with cooling tower pool 2 through pipeline, cooling tower pool 2 is connected with calcium carbide furnace water collector 5 through pipeline, variable frequency circulating water pump 1 outlet is connected with calcium carbide furnace water distributor 3, calcium carbide furnace water distributor 3 outlet is connected with calcium carbide furnace cooling unit 4 through pipeline, calcium carbide furnace cooling unit 4 is connected with calcium carbide furnace water collector 5, calcium carbide furnace water distributor 3 is provided with distributor pressure remote instrument 10, calcium carbide furnace water collector 5 is provided with collector pressure remote instrument 16, distributor pressure remote instrument 10 and collector pressure remote instrument 16 are electrically connected with control room background feedback analyzer 6, calcium carbide furnace cooling unit 4 includes multiple heat exchangers, multiple heat exchanger inlets are respectively connected to calcium carbide furnace water distributor 3 outlet pipeline through pipeline, multiple heat exchanger outlets are respectively connected to calcium carbide furnace water collector 5 inlet pipeline through pipeline, multiple heat exchanger inlets are respectively provided with calcium carbide circulating water branch inlet pressure remote instrument 11 and calcium carbide circulating water branch inlet valve 13 which are electrically connected, multiple calcium carbide circulating water branch inlet valves 13 are arranged at one end close to calcium carbide furnace water distributor 3, multiple calcium carbide circulating water branch inlet pressure remote instruments 11 are electrically connected to control room background feedback analyzer 6, multiple heat exchanger outlets are respectively provided with calcium carbide circulating water branch outlet pressure remote instrument 14 and calcium carbide circulating water branch outlet valve 15 which are electrically connected, multiple calcium carbide circulating water branch outlet valves 15 are arranged at one end close to calcium carbide furnace water collector 5, multiple calcium carbide circulating water branch outlet pressure remote instruments 14 are respectively electrically connected to control room background feedback analyzer 6, variable frequency circulating water pump 1 inlet and cooling tower pool 2 connected pipeline is provided with circulating water pump inlet valve 8, variable frequency circulating water pump 1 outlet and calcium carbide furnace water distributor 3 connected pipeline is provided with variable frequency circulating water pump outlet valve 18, circulating water pump outlet pressure remote instrument 9 and calcium carbide furnace water distributor inlet valve 12, calcium carbide furnace water distributor inlet valve 12 is arranged at one end close to calcium carbide furnace water distributor 3, variable frequency circulating water pump outlet valve 18 is arranged between circulating water pump outlet pressure remote instrument 9 and variable frequency circulating water pump 1, circulating water pump outlet pressure remote instrument 9 and distributor pressure remote instrument 10 are electrically connected.

[0048] Example 7

[0049] The embodiment provides a pressure signal based industrial calcium carbide furnace circulating water leak detection device, which comprises a variable frequency circulating water pump 1, a cooling tower pool 2 connected to the variable frequency circulating water pump 1 through a pipeline, a calcium carbide furnace water collector 5 connected to the cooling tower pool 2 through a pipeline, a calcium carbide furnace water distributor 3 connected to the variable frequency circulating water pump 1 through a pipeline, a calcium carbide furnace cooling unit 4 connected to the calcium carbide furnace water distributor 3 through a pipeline, a calcium carbide furnace water collector 5 connected to the calcium carbide furnace cooling unit 4, a distributor pressure remote instrument 10 arranged on the calcium carbide furnace water distributor 3, a collector pressure remote instrument 16 arranged on the calcium carbide furnace water collector 5, and a control room background feedback analyzer 6 electrically connected to the distributor pressure remote instrument 10 and the collector pressure remote instrument 16. Figure 1As shown, including variable frequency circulating water pump 1, variable frequency circulating water pump 1 inlet is connected by pipeline with cooling tower pool 2, cooling tower pool 2 is connected by pipeline with calcium carbide furnace water collector 5, variable frequency circulating water pump 1 outlet is connected with calcium carbide furnace water distributor 3, calcium carbide furnace water distributor 3 outlet is connected by pipeline with calcium carbide furnace cooling unit 4, calcium carbide furnace cooling unit 4 is connected with calcium carbide furnace water collector 5, calcium carbide furnace water distributor 3 is provided with distributor pressure remote instrument 10, calcium carbide furnace water collector 5 is provided with collector pressure remote instrument 16, distributor pressure remote instrument 10 and collector pressure remote instrument 16 are electrically connected with control room background feedback analyzer 6, calcium carbide furnace cooling unit 4 includes a plurality of heat exchangers, a plurality of heat exchanger inlets are connected to the outlet pipeline of calcium carbide furnace water distributor 3 through pipelines respectively, a plurality of heat exchanger outlets are connected to the inlet pipeline of calcium carbide furnace water collector 5 through pipelines respectively, the pipelines connected with a plurality of heat exchanger inlets are all provided with calcium carbide furnace circulating water branch inlet pressure remote instrument 11 and calcium carbide furnace circulating water branch inlet valve 13 which are electrically connected with each other, a plurality of calcium carbide furnace circulating water branch inlet valves 13 are arranged at one end close to calcium carbide furnace water distributor 3, a plurality of calcium carbide furnace circulating water branch inlet pressure remote instruments 11 are electrically connected to control room background feedback analyzer 6, the pipelines connected with a plurality of heat exchanger outlets are all provided with calcium carbide furnace circulating water branch outlet pressure remote instrument 14 and calcium carbide furnace circulating water branch outlet valve 15 which are connected with each other, a plurality of calcium carbide furnace circulating water branch outlet valves 15 are arranged at one end close to calcium carbide furnace water collector 5; a plurality of calcium carbide furnace circulating water branch outlet pressure remote instruments 14 are electrically connected to control room background feedback analyzer 6 respectively, the pipeline connecting variable frequency circulating water pump 1 inlet with cooling tower pool 2 is provided with circulating water pump inlet valve 8, the pipeline connecting variable frequency circulating water pump 1 outlet with calcium carbide furnace water distributor 3 is provided with variable frequency circulating water pump outlet valve 18, circulating water pump outlet pressure remote instrument 9 and calcium carbide furnace water distributor inlet valve 12, calcium carbide furnace water distributor inlet valve 12 is arranged at one end close to calcium carbide furnace water distributor 3, variable frequency circulating water pump outlet valve 18 is arranged between circulating water pump outlet pressure remote instrument 9 and variable frequency circulating water pump 1; circulating water pump outlet pressure remote instrument 9 is electrically connected with distributor pressure remote instrument 10, the pipeline connecting cooling tower pool 2 with calcium carbide furnace water collector 5 is provided with calcium carbide furnace water collector inlet valve 17.

[0050] Example 8

[0051] The embodiment provides a pressure signal-based industrial calcium carbide furnace circulating water leak detection device, which comprises a variable frequency circulating water pump 1, a calcium carbide furnace water distributor 3, a calcium carbide furnace water collector 5, a calcium carbide furnace cooling unit 4, a control room background feedback analyzer 6, a plurality of heat exchangers, a plurality of calcium carbide furnace circulating water branch inlet valves 13, a plurality of calcium carbide furnace circulating water branch outlet valves 15 and a calcium carbide furnace water collector inlet valve 17. Figure 1As shown, including variable frequency circulating water pump 1, variable frequency circulating water pump 1 inlet is connected with cooling tower pool 2 through pipeline, cooling tower pool 2 has calcium carbide furnace water collector 5 through pipeline, variable frequency circulating water pump 1 outlet is connected with calcium carbide furnace water distributor 3, calcium carbide furnace water distributor 3 outlet is connected with calcium carbide furnace cooling unit 4 through pipeline, calcium carbide furnace cooling unit 4 is connected with calcium carbide furnace water collector 5, calcium carbide furnace water distributor 3 is equipped with distributor pressure remote instrument 10, calcium carbide furnace water collector 5 is equipped with collector pressure remote instrument 16, distributor pressure remote instrument 10 and collector pressure remote instrument 16 are electrically connected with control room background feedback analyzer 6, calcium carbide furnace cooling unit 4 includes multiple heat exchangers, multiple heat exchanger inlets are connected to calcium carbide furnace water distributor 3 outlet pipeline respectively through pipeline, multiple heat exchanger outlets are connected to calcium carbide furnace water collector 5 inlet pipeline respectively through pipeline, multiple heat exchanger inlets are all equipped with calcium carbide furnace circulating water branch inlet pressure remote instrument 11 and calcium carbide furnace circulating water branch inlet valve 13 that are electrically connected with each other, multiple calcium carbide furnace circulating water branch inlet valves 13 are arranged at one end close to calcium carbide furnace water distributor 3, multiple calcium carbide furnace circulating water branch inlet pressure remote instruments 11 are electrically connected to control room background feedback analyzer 6, multiple heat exchanger outlets are all equipped with calcium carbide furnace circulating water branch outlet pressure remote instrument 14 and calcium carbide furnace circulating water branch outlet valve 15 that are connected with each other, multiple calcium carbide furnace circulating water branch outlet valves 15 are arranged at one end close to calcium carbide furnace water collector 5, multiple calcium carbide furnace circulating water branch outlet pressure remote instruments 14 are electrically connected to control room background feedback analyzer 6 respectively, variable frequency circulating water pump 1 inlet and cooling tower pool 2 connection pipeline are equipped with circulating water pump inlet valve 8, variable frequency circulating water pump 1 outlet and calcium carbide furnace water distributor 3 connection pipeline are equipped with variable frequency circulating water pump outlet valve 18, circulating water pump outlet pressure remote instrument 9 and calcium carbide furnace water distributor inlet valve 12, calcium carbide furnace water distributor inlet valve 12 is arranged at one end close to calcium carbide furnace water distributor 3, variable frequency circulating water pump outlet valve 18 is arranged between circulating water pump outlet pressure remote instrument 9 and variable frequency circulating water pump 1, circulating water pump outlet pressure remote instrument 9 and distributor pressure remote instrument 10 are electrically connected, calcium carbide furnace water collector 5 and calcium carbide furnace water collector 5 connection pipeline are equipped with calcium carbide furnace water collector inlet valve 17, control room background feedback analyzer 6 is electrically connected with alarm 7.

[0052] The industrial calcium carbide furnace inner circulating water leak detection device based on pressure signals provided by the utility model, adopts pressure signals in leak determination, which is more accurate than flow signal, so that the accuracy of leak detection is higher, not only the leak detection function of calcium carbide furnace can be realized, but also the precise positioning of specific water leakage cooling branch can be realized.

Claims

1. A pressure signal based leak detection device for circulating water in an industrial calcium carbide furnace, characterized in that, The system includes a variable frequency circulating water pump (1), the inlet of which is connected to a cooling tower pool (2) via a pipe, the cooling tower pool (2) via a calcium carbide furnace water collector (5) via a pipe, the outlet of which is connected to a calcium carbide furnace water distributor (3), the outlet of which is connected to a calcium carbide furnace cooling unit (4) via a pipe, the calcium carbide furnace cooling unit (4) and the calcium carbide furnace water collector (5) are connected, the calcium carbide furnace water distributor (3) is equipped with a distributor pressure remote transmission instrument (10), the calcium carbide furnace water collector (5) is equipped with a collector pressure remote transmission instrument (16), and the distributor pressure remote transmission instrument (10) and the collector pressure remote transmission instrument (16) are electrically connected to a control room background feedback analyzer (6).

2. The pressure signal based industrial calcium carbide furnace inner circulating water leak detection device according to claim 1, characterized in that, The calcium carbide furnace cooling unit (4) includes multiple heat exchangers. The inlets of the multiple heat exchangers are connected to the outlet pipe of the calcium carbide furnace water separator (3) through pipes, and the outlets of the multiple heat exchangers are connected to the inlet pipe of the calcium carbide furnace water collector (5) through pipes.

3. The pressure signal based industrial calcium carbide furnace inner circulating water leak detection device according to claim 2, characterized in that, Each of the pipes connected to the inlet of the heat exchanger is equipped with a remote pressure transmitter (11) for the inlet water of the circulating water branch of the calcium carbide furnace and an inlet valve (13) for the circulating water branch of the calcium carbide furnace. The inlet valve (13) for the circulating water branch of the calcium carbide furnace is located at one end near the water separator (3) of the calcium carbide furnace. The remote pressure transmitter (11) for the inlet water of the circulating water branch of the calcium carbide furnace is electrically connected to the background feedback analyzer (6) in the control room.

4. The pressure signal based industrial calcium carbide furnace inner circulating water leak detection device according to claim 2, characterized in that, Each of the multiple heat exchanger outlets is equipped with a remote water pressure transmitter (14) for the circulating water branch of the calcium carbide furnace and a water outlet valve (15) for the circulating water branch of the calcium carbide furnace. The multiple water outlet valves (15) for the circulating water branch of the calcium carbide furnace are located at one end near the water collector (5) of the calcium carbide furnace. The multiple water pressure transmitter (14) for the circulating water branch of the calcium carbide furnace are electrically connected to the background feedback analyzer (6) in the control room.

5. The pressure signal based industrial calcium carbide furnace inner circulating water leak detection device according to claim 1, characterized in that, The inlet valve (8) of the circulating water pump (1) is provided on the pipe connecting the inlet of the variable frequency circulating water pump (1) and the cooling tower pool (2).

6. The pressure signal based industrial calcium carbide furnace inner circulating water leak detection device according to claim 1, characterized in that, The pipeline connecting the outlet of the variable frequency circulating water pump (1) to the calcium carbide furnace water separator (3) is equipped with a variable frequency circulating water pump outlet valve (18), a circulating water pump outlet pressure remote transmission instrument (9), and a calcium carbide furnace water separator inlet valve (12). The calcium carbide furnace water separator inlet valve (12) is located at one end close to the calcium carbide furnace water separator (3), and the variable frequency circulating water pump outlet valve (18) is located between the circulating water pump outlet pressure remote transmission instrument (9) and the variable frequency circulating water pump (1). The circulating water pump outlet pressure remote transmission instrument (9) is electrically connected to the water distributor pressure remote transmission instrument (10).

7. The pressure signal based industrial calcium carbide furnace inner circulating water leak detection device according to claim 1, characterized in that, The cooling tower pool (2) is connected to the calcium carbide furnace water collector (5) by a water inlet valve (17) for the calcium carbide furnace water collector.

8. The pressure signal based industrial calcium carbide furnace inner circulating water leak detection device according to claim 1, characterized in that, The control room background feedback analyzer (6) is electrically connected to an alarm (7).

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